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Merge pull request #384 from amrfaissal/dlv-support

Browse Source 
Add support for Delve debugger
This commit is contained in:
Faissal Elamraoui 2017-03-22 17:01:34 +01:00 committed by GitHub
commit 8c0742c140
155 changed files with 51345 additions and 8 deletions
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49
README.md
View File

@ -1,3 +1,4 @@
bee
===
@ -34,17 +35,20 @@ go get -u github.com/beego/bee
Bee provides a variety of commands which can be helpful at various stages of development. The top level commands include:
```
new Creates a Beego application
run Run the application by starting a local development server
pack Compresses a Beego application into a single file
api Creates a Beego API application
hprose Creates an RPC application based on Hprose and Beego frameworks
bale Transforms non-Go files to Go source files
version Prints the current Bee version
generate Source code generator
migrate Runs database migrations
api Creates a Beego API application
bale Transforms non-Go files to Go source files
fix Fixes your application by making it compatible with newer versions of Beego
dlv Start a debugging session using Delve
dockerize Generates a Dockerfile for your Beego application
generate Source code generator
hprose Creates an RPC application based on Hprose and Beego frameworks
new Creates a Beego application
pack Compresses a Beego application into a single file
rs Run customized scripts
run Run the application by starting a local development server
```
### bee version
@ -298,6 +302,37 @@ ______
For more information on the usage, run `bee help dockerize`.
### bee dlv
Bee can also help with debugging your application. To start a debugging session:
```bash
______
| ___ \
| |_/ / ___ ___
| ___ \ / _ \ / _ \
| |_/ /| __/| __/
\____/ \___| \___| v1.8.0
2017/03/22 11:17:05 INFO ▶ 0001 Starting Delve Debugger...
Type 'help' for list of commands.
(dlv) break main.main
Breakpoint 1 set at 0x40100f for main.main() ./main.go:8
(dlv) continue
> main.main() ./main.go:8 (hits goroutine(1):1 total:1) (PC: 0x40100f)
3: import (
4: _ "github.com/user/myapp/routers"
5: "github.com/astaxie/beego"
6: )
7:
=> 8: func main() {
9: beego.Run()
10: }
11:
```
For more information on the usage, run `bee help dlv`.
## Shortcuts
Because you'll likely type these generator commands over and over, it makes sense to create aliases:

3
cmd/bee.go
View File

@ -12,7 +12,7 @@
// License for the specific language governing permissions and limitations
// under the License.
// Bee is a tool for developing applications based on beego framework.
// Package cmd ...
package cmd
import (
@ -20,6 +20,7 @@ import (
_ "github.com/beego/bee/cmd/commands/api"
_ "github.com/beego/bee/cmd/commands/bale"
_ "github.com/beego/bee/cmd/commands/beefix"
_ "github.com/beego/bee/cmd/commands/dlv"
_ "github.com/beego/bee/cmd/commands/dockerize"
_ "github.com/beego/bee/cmd/commands/generate"
_ "github.com/beego/bee/cmd/commands/hprose"

135
cmd/commands/dlv/dlv.go Normal file
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@ -0,0 +1,135 @@
// Copyright 2017 bee authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package dlv ...
package dlv
import (
"flag"
"fmt"
"net"
"os"
"path/filepath"
"github.com/beego/bee/cmd/commands"
"github.com/beego/bee/cmd/commands/version"
beeLogger "github.com/beego/bee/logger"
"github.com/beego/bee/utils"
"github.com/derekparker/delve/pkg/terminal"
"github.com/derekparker/delve/service"
"github.com/derekparker/delve/service/rpc2"
"github.com/derekparker/delve/service/rpccommon"
)
var cmdDlv = &commands.Command{
CustomFlags: true,
UsageLine: "dlv [-package=\"\"] [-port=8181]",
Short: "Start a debugging session using Delve",
Long: `dlv command start a debugging session using debugging tool Delve.
To debug your application using Delve, use: {{"$ bee dlv" | bold}}
For more information on Delve: https://github.com/derekparker/delve
`,
PreRun: func(cmd *commands.Command, args []string) { version.ShowShortVersionBanner() },
Run: runDlv,
}
var (
packageName string
port int
)
func init() {
fs := flag.NewFlagSet("dlv", flag.ContinueOnError)
fs.IntVar(&port, "port", 8181, "Port to listen to for clients")
fs.StringVar(&packageName, "package", "", "The package to debug (Must have a main package)")
cmdDlv.Flag = *fs
commands.AvailableCommands = append(commands.AvailableCommands, cmdDlv)
}
func runDlv(cmd *commands.Command, args []string) int {
if err := cmd.Flag.Parse(args); err != nil {
beeLogger.Log.Fatalf("Error parsing flags: %v", err.Error())
}
debugname := "debug"
addr := fmt.Sprintf("127.0.0.1:%d", port)
return runDelve(addr, debugname)
}
// runDelve runs the Delve debugger server
func runDelve(addr, debugname string) int {
beeLogger.Log.Info("Starting Delve Debugger...")
err := gobuild(debugname, packageName)
if err != nil {
beeLogger.Log.Fatalf("%v", err)
}
fp, err := filepath.Abs("./" + debugname)
if err != nil {
beeLogger.Log.Fatalf("%v", err)
}
defer os.Remove(fp)
abs, err := filepath.Abs(debugname)
if err != nil {
beeLogger.Log.Fatalf("%v", err)
}
// Create and start the debugger server
listener, err := net.Listen("tcp", addr)
if err != nil {
beeLogger.Log.Fatalf("Could not start listener: %s", err)
}
defer listener.Close()
server := rpccommon.NewServer(&service.Config{
Listener: listener,
AcceptMulti: true,
AttachPid: 0,
APIVersion: 2,
WorkingDir: "./",
ProcessArgs: []string{abs},
}, false)
if err := server.Run(); err != nil {
beeLogger.Log.Fatalf("Could not start debugger server: %v", err)
}
// Start the Delve client REPL
client := rpc2.NewClient(addr)
term := terminal.New(client, nil)
status, err := term.Run()
if err != nil {
beeLogger.Log.Fatalf("Could not start Delve REPL: %v", err)
}
defer term.Close()
// Stop and kill the debugger server once
// user quits the REPL
if err := server.Stop(true); err != nil {
beeLogger.Log.Fatalf("Could not stop Delve server: %v", err)
}
return status
}
// gobuild runs the "go build" command on the specified package
func gobuild(debugname, pkg string) error {
args := []string{"-gcflags", "-N -l", "-o", debugname}
args = append(args, utils.SplitQuotedFields("-ldflags='-linkmode internal'")...)
args = append(args, pkg)
return utils.GoCommand("build", args...)
}

67
utils/utils.go
View File

@ -26,6 +26,7 @@ import (
"runtime"
"strings"
"text/template"
"unicode"
beeLogger "github.com/beego/bee/logger"
"github.com/beego/bee/logger/colors"
@ -332,3 +333,69 @@ func PrintErrorAndExit(message, errorTemplate string) {
Tmpl(fmt.Sprintf(errorTemplate, message), nil)
os.Exit(2)
}
// GoCommand executes the passed command using Go tool
func GoCommand(command string, args ...string) error {
allargs := []string{command}
allargs = append(allargs, args...)
goBuild := exec.Command("go", allargs...)
goBuild.Stderr = os.Stderr
return goBuild.Run()
}
// SplitQuotedFields is like strings.Fields but ignores spaces
// inside areas surrounded by single quotes.
// To specify a single quote use backslash to escape it: '\''
func SplitQuotedFields(in string) []string {
type stateEnum int
const (
inSpace stateEnum = iota
inField
inQuote
inQuoteEscaped
)
state := inSpace
r := []string{}
var buf bytes.Buffer
for _, ch := range in {
switch state {
case inSpace:
if ch == '\'' {
state = inQuote
} else if !unicode.IsSpace(ch) {
buf.WriteRune(ch)
state = inField
}
case inField:
if ch == '\'' {
state = inQuote
} else if unicode.IsSpace(ch) {
r = append(r, buf.String())
buf.Reset()
} else {
buf.WriteRune(ch)
}
case inQuote:
if ch == '\'' {
state = inField
} else if ch == '\\' {
state = inQuoteEscaped
} else {
buf.WriteRune(ch)
}
case inQuoteEscaped:
buf.WriteRune(ch)
state = inQuote
}
}
if buf.Len() != 0 {
r = append(r, buf.String())
}
return r
}

20
vendor/github.com/derekparker/delve/LICENSE generated vendored Normal file
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@ -0,0 +1,20 @@
The MIT License (MIT)
Copyright (c) 2014 Derek Parker
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

134
vendor/github.com/derekparker/delve/pkg/config/config.go generated vendored Normal file
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@ -0,0 +1,134 @@
package config
import (
"fmt"
"io/ioutil"
"os"
"os/user"
"path"
yaml "gopkg.in/yaml.v2"
)
const (
configDir string = ".dlv"
configFile string = "config.yml"
)
// Describes a rule for substitution of path to source code file.
type SubstitutePathRule struct {
// Directory path will be substituted if it matches `From`.
From string
// Path to which substitution is performed.
To string
}
// Slice of source code path substitution rules.
type SubstitutePathRules []SubstitutePathRule
// Config defines all configuration options available to be set through the config file.
type Config struct {
// Commands aliases.
Aliases map[string][]string
// Source code path substitution rules.
SubstitutePath SubstitutePathRules `yaml:"substitute-path"`
}
// LoadConfig attempts to populate a Config object from the config.yml file.
func LoadConfig() *Config {
err := createConfigPath()
if err != nil {
fmt.Printf("Could not create config directory: %v.", err)
return nil
}
fullConfigFile, err := GetConfigFilePath(configFile)
if err != nil {
fmt.Printf("Unable to get config file path: %v.", err)
return nil
}
f, err := os.Open(fullConfigFile)
if err != nil {
createDefaultConfig(fullConfigFile)
return nil
}
defer func() {
err := f.Close()
if err != nil {
fmt.Printf("Closing config file failed: %v.", err)
}
}()
data, err := ioutil.ReadAll(f)
if err != nil {
fmt.Printf("Unable to read config data: %v.", err)
return nil
}
var c Config
err = yaml.Unmarshal(data, &c)
if err != nil {
fmt.Printf("Unable to decode config file: %v.", err)
return nil
}
return &c
}
func createDefaultConfig(path string) {
f, err := os.Create(path)
if err != nil {
fmt.Printf("Unable to create config file: %v.", err)
return
}
defer func() {
err := f.Close()
if err != nil {
fmt.Printf("Closing config file failed: %v.", err)
}
}()
err = writeDefaultConfig(f)
if err != nil {
fmt.Printf("Unable to write default configuration: %v.", err)
}
}
func writeDefaultConfig(f *os.File) error {
_, err := f.WriteString(
`# Configuration file for the delve debugger.
# This is the default configuration file. Available options are provided, but disabled.
# Delete the leading hash mark to enable an item.
# Provided aliases will be added to the default aliases for a given command.
aliases:
# command: ["alias1", "alias2"]
# Define sources path substitution rules. Can be used to rewrite a source path stored
# in program's debug information, if the sources were moved to a different place
# between compilation and debugging.
# Note that substitution rules will not be used for paths passed to "break" and "trace"
# commands.
substitute-path:
# - {from: path, to: path}
`)
return err
}
// createConfigPath creates the directory structure at which all config files are saved.
func createConfigPath() error {
path, err := GetConfigFilePath("")
if err != nil {
return err
}
return os.MkdirAll(path, 0700)
}
// GetConfigFilePath gets the full path to the given config file name.
func GetConfigFilePath(file string) (string, error) {
usr, err := user.Current()
if err != nil {
return "", err
}
return path.Join(usr.HomeDir, configDir, file), nil
}

95
vendor/github.com/derekparker/delve/pkg/dwarf/frame/entries.go generated vendored Normal file
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@ -0,0 +1,95 @@
package frame
import (
"encoding/binary"
"fmt"
"sort"
)
// Represents a Common Information Entry in
// the Dwarf .debug_frame section.
type CommonInformationEntry struct {
Length uint32
CIE_id uint32
Version uint8
Augmentation string
CodeAlignmentFactor uint64
DataAlignmentFactor int64
ReturnAddressRegister uint64
InitialInstructions []byte
}
// Represents a Frame Descriptor Entry in the
// Dwarf .debug_frame section.
type FrameDescriptionEntry struct {
Length uint32
CIE *CommonInformationEntry
Instructions []byte
begin, end uint64
order binary.ByteOrder
}
// Returns whether or not the given address is within the
// bounds of this frame.
func (fde *FrameDescriptionEntry) Cover(addr uint64) bool {
if (addr - fde.begin) < fde.end {
return true
}
return false
}
// Address of first location for this frame.
func (fde *FrameDescriptionEntry) Begin() uint64 {
return fde.begin
}
// Address of last location for this frame.
func (fde *FrameDescriptionEntry) End() uint64 {
return fde.begin + fde.end
}
// Set up frame for the given PC.
func (fde *FrameDescriptionEntry) EstablishFrame(pc uint64) *FrameContext {
return executeDwarfProgramUntilPC(fde, pc)
}
// Return the offset from the current SP that the return address is stored at.
func (fde *FrameDescriptionEntry) ReturnAddressOffset(pc uint64) (frameOffset, returnAddressOffset int64) {
frame := fde.EstablishFrame(pc)
return frame.cfa.offset, frame.regs[fde.CIE.ReturnAddressRegister].offset
}
type FrameDescriptionEntries []*FrameDescriptionEntry
func NewFrameIndex() FrameDescriptionEntries {
return make(FrameDescriptionEntries, 0, 1000)
}
type NoFDEForPCError struct {
PC uint64
}
func (err *NoFDEForPCError) Error() string {
return fmt.Sprintf("could not find FDE for PC %#v", err.PC)
}
// Returns the Frame Description Entry for the given PC.
func (fdes FrameDescriptionEntries) FDEForPC(pc uint64) (*FrameDescriptionEntry, error) {
idx := sort.Search(len(fdes), func(i int) bool {
if fdes[i].Cover(pc) {
return true
}
if fdes[i].LessThan(pc) {
return false
}
return true
})
if idx == len(fdes) {
return nil, &NoFDEForPCError{pc}
}
return fdes[idx], nil
}
func (frame *FrameDescriptionEntry) LessThan(pc uint64) bool {
return frame.End() <= pc
}

164
vendor/github.com/derekparker/delve/pkg/dwarf/frame/expression_constants.go generated vendored Normal file
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@ -0,0 +1,164 @@
package frame
// Operation opcodes
const (
DW_OP_addr = 0x03
DW_OP_const1s = 0x09
)
const (
DW_OP_const2u = 0x0a
DW_OP_const2s = 0x0b
DW_OP_const4u = iota
DW_OP_const4s
DW_OP_const8u
DW_OP_const8s
DW_OP_constu
DW_OP_consts
DW_OP_dup
DW_OP_drop
DW_OP_over
DW_OP_pick
DW_OP_swap
DW_OP_rot
DW_OP_xderef
DW_OP_abs
DW_OP_and
DW_OP_div
DW_OP_minus
DW_OP_mod
DW_OP_mul
DW_OP_neg
DW_OP_not
DW_OP_or
DW_OP_plus
DW_OP_plus_uconst
DW_OP_shl
DW_OP_shr
DW_OP_shra
DW_OP_xor
DW_OP_skip
DW_OP_bra
DW_OP_eq
DW_OP_ge
DW_OP_gt
DW_OP_le
DW_OP_lt
DW_OP_ne
)
const (
DW_OP_lit0 = 0x30
DW_OP_lit1 = 0x31
DW_OP_lit2 = iota
DW_OP_lit3
DW_OP_lit4
DW_OP_lit5
DW_OP_lit6
DW_OP_lit7
DW_OP_lit8
DW_OP_lit9
DW_OP_lit10
DW_OP_lit11
DW_OP_lit12
DW_OP_lit13
DW_OP_lit14
DW_OP_lit15
DW_OP_lit16
DW_OP_lit17
DW_OP_lit18
DW_OP_lit19
DW_OP_lit20
DW_OP_lit21
DW_OP_lit22
DW_OP_lit23
DW_OP_lit24
DW_OP_lit25
DW_OP_lit26
DW_OP_lit27
DW_OP_lit28
DW_OP_lit29
DW_OP_lit30
DW_OP_lit31
DW_OP_reg0
DW_OP_reg1
DW_OP_reg2
DW_OP_reg3
DW_OP_reg4
DW_OP_reg5
DW_OP_reg6
DW_OP_reg7
DW_OP_reg8
DW_OP_reg9
DW_OP_reg10
DW_OP_reg11
DW_OP_reg12
DW_OP_reg13
DW_OP_reg14
DW_OP_reg15
DW_OP_reg16
DW_OP_reg17
DW_OP_reg18
DW_OP_reg19
DW_OP_reg20
DW_OP_reg21
DW_OP_reg22
DW_OP_reg23
DW_OP_reg24
DW_OP_reg25
DW_OP_reg26
DW_OP_reg27
DW_OP_reg28
DW_OP_reg29
DW_OP_reg30
DW_OP_reg31
DW_OP_breg0
DW_OP_breg1
DW_OP_breg2
DW_OP_breg3
DW_OP_breg4
DW_OP_breg5
DW_OP_breg6
DW_OP_breg7
DW_OP_breg8
DW_OP_breg9
DW_OP_breg10
DW_OP_breg11
DW_OP_breg12
DW_OP_breg13
DW_OP_breg14
DW_OP_breg15
DW_OP_breg16
DW_OP_breg17
DW_OP_breg18
DW_OP_breg19
DW_OP_breg20
DW_OP_breg21
DW_OP_breg22
DW_OP_breg23
DW_OP_breg24
DW_OP_breg25
DW_OP_breg26
DW_OP_breg27
DW_OP_breg28
DW_OP_breg29
DW_OP_breg30
DW_OP_breg31
DW_OP_regx
DW_OP_fbreg
DW_OP_bregx
DW_OP_piece
DW_OP_deref_size
DW_OP_xderef_size
DW_OP_nop
DW_OP_push_object_address
DW_OP_call2
DW_OP_call4
DW_OP_call_ref
DW_OP_form_tls_address
DW_OP_call_frame_cfa
DW_OP_bit_piece
DW_OP_lo_user = 0xe0
DW_OP_hi_user = 0xff
)

125
vendor/github.com/derekparker/delve/pkg/dwarf/frame/parser.go generated vendored Normal file
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@ -0,0 +1,125 @@
// Package frame contains data structures and
// related functions for parsing and searching
// through Dwarf .debug_frame data.
package frame
import (
"bytes"
"encoding/binary"
"github.com/derekparker/delve/pkg/dwarf/util"
)
type parsefunc func(*parseContext) parsefunc
type parseContext struct {
buf *bytes.Buffer
entries FrameDescriptionEntries
common *CommonInformationEntry
frame *FrameDescriptionEntry
length uint32
}
// Parse takes in data (a byte slice) and returns a slice of
// commonInformationEntry structures. Each commonInformationEntry
// has a slice of frameDescriptionEntry structures.
func Parse(data []byte, order binary.ByteOrder) FrameDescriptionEntries {
var (
buf = bytes.NewBuffer(data)
pctx = &parseContext{buf: buf, entries: NewFrameIndex()}
)
for fn := parselength; buf.Len() != 0; {
fn = fn(pctx)
}
for i := range pctx.entries {
pctx.entries[i].order = order
}
return pctx.entries
}
func cieEntry(data []byte) bool {
return bytes.Equal(data, []byte{0xff, 0xff, 0xff, 0xff})
}
func parselength(ctx *parseContext) parsefunc {
var data = ctx.buf.Next(8)
ctx.length = binary.LittleEndian.Uint32(data[:4]) - 4 // take off the length of the CIE id / CIE pointer.
if cieEntry(data[4:]) {
ctx.common = &CommonInformationEntry{Length: ctx.length}
return parseCIE
}
ctx.frame = &FrameDescriptionEntry{Length: ctx.length, CIE: ctx.common}
return parseFDE
}
func parseFDE(ctx *parseContext) parsefunc {
r := ctx.buf.Next(int(ctx.length))
ctx.frame.begin = binary.LittleEndian.Uint64(r[:8])
ctx.frame.end = binary.LittleEndian.Uint64(r[8:16])
// Insert into the tree after setting address range begin
// otherwise compares won't work.
ctx.entries = append(ctx.entries, ctx.frame)
// The rest of this entry consists of the instructions
// so we can just grab all of the data from the buffer
// cursor to length.
ctx.frame.Instructions = r[16:]
ctx.length = 0
return parselength
}
func parseCIE(ctx *parseContext) parsefunc {
data := ctx.buf.Next(int(ctx.length))
buf := bytes.NewBuffer(data)
// parse version
ctx.common.Version = data[0]
// parse augmentation
ctx.common.Augmentation, _ = util.ParseString(buf)
// parse code alignment factor
ctx.common.CodeAlignmentFactor, _ = util.DecodeULEB128(buf)
// parse data alignment factor
ctx.common.DataAlignmentFactor, _ = util.DecodeSLEB128(buf)
// parse return address register
ctx.common.ReturnAddressRegister, _ = util.DecodeULEB128(buf)
// parse initial instructions
// The rest of this entry consists of the instructions
// so we can just grab all of the data from the buffer
// cursor to length.
ctx.common.InitialInstructions = buf.Bytes() //ctx.buf.Next(int(ctx.length))
ctx.length = 0
return parselength
}
// DwarfEndian determines the endianness of the DWARF by using the version number field in the debug_info section
// Trick borrowed from "debug/dwarf".New()
func DwarfEndian(infoSec []byte) binary.ByteOrder {
if len(infoSec) < 6 {
return binary.BigEndian
}
x, y := infoSec[4], infoSec[5]
switch {
case x == 0 && y == 0:
return binary.BigEndian
case x == 0:
return binary.BigEndian
case y == 0:
return binary.LittleEndian
default:
return binary.BigEndian
}
}

429
vendor/github.com/derekparker/delve/pkg/dwarf/frame/table.go generated vendored Normal file
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@ -0,0 +1,429 @@
package frame
import (
"bytes"
"encoding/binary"
"fmt"
"github.com/derekparker/delve/pkg/dwarf/util"
)
type CurrentFrameAddress struct {
register uint64
offset int64
expression []byte
rule byte
}
type DWRule struct {
rule byte
offset int64
newreg uint64
expression []byte
}
type FrameContext struct {
loc uint64
order binary.ByteOrder
address uint64
cfa CurrentFrameAddress
regs map[uint64]DWRule
initialRegs map[uint64]DWRule
prevRegs map[uint64]DWRule
buf *bytes.Buffer
cie *CommonInformationEntry
codeAlignment uint64
dataAlignment int64
}
func (fctx *FrameContext) CFAOffset() int64 {
return fctx.cfa.offset
}
// Instructions used to recreate the table from the .debug_frame data.
const (
DW_CFA_nop = 0x0 // No ops
DW_CFA_set_loc = 0x01 // op1: address
DW_CFA_advance_loc1 = iota // op1: 1-bytes delta
DW_CFA_advance_loc2 // op1: 2-byte delta
DW_CFA_advance_loc4 // op1: 4-byte delta
DW_CFA_offset_extended // op1: ULEB128 register, op2: ULEB128 offset
DW_CFA_restore_extended // op1: ULEB128 register
DW_CFA_undefined // op1: ULEB128 register
DW_CFA_same_value // op1: ULEB128 register
DW_CFA_register // op1: ULEB128 register, op2: ULEB128 register
DW_CFA_remember_state // No ops
DW_CFA_restore_state // No ops
DW_CFA_def_cfa // op1: ULEB128 register, op2: ULEB128 offset
DW_CFA_def_cfa_register // op1: ULEB128 register
DW_CFA_def_cfa_offset // op1: ULEB128 offset
DW_CFA_def_cfa_expression // op1: BLOCK
DW_CFA_expression // op1: ULEB128 register, op2: BLOCK
DW_CFA_offset_extended_sf // op1: ULEB128 register, op2: SLEB128 BLOCK
DW_CFA_def_cfa_sf // op1: ULEB128 register, op2: SLEB128 offset
DW_CFA_def_cfa_offset_sf // op1: SLEB128 offset
DW_CFA_val_offset // op1: ULEB128, op2: ULEB128
DW_CFA_val_offset_sf // op1: ULEB128, op2: SLEB128
DW_CFA_val_expression // op1: ULEB128, op2: BLOCK
DW_CFA_lo_user = 0x1c // op1: BLOCK
DW_CFA_hi_user = 0x3f // op1: ULEB128 register, op2: BLOCK
DW_CFA_advance_loc = (0x1 << 6) // High 2 bits: 0x1, low 6: delta
DW_CFA_offset = (0x2 << 6) // High 2 bits: 0x2, low 6: register
DW_CFA_restore = (0x3 << 6) // High 2 bits: 0x3, low 6: register
)
// Rules defined for register values.
const (
rule_undefined = iota
rule_sameval
rule_offset
rule_valoffset
rule_register
rule_expression
rule_valexpression
rule_architectural
)
const low_6_offset = 0x3f
type instruction func(frame *FrameContext)
// // Mapping from DWARF opcode to function.
var fnlookup = map[byte]instruction{
DW_CFA_advance_loc: advanceloc,
DW_CFA_offset: offset,
DW_CFA_restore: restore,
DW_CFA_set_loc: setloc,
DW_CFA_advance_loc1: advanceloc1,
DW_CFA_advance_loc2: advanceloc2,
DW_CFA_advance_loc4: advanceloc4,
DW_CFA_offset_extended: offsetextended,
DW_CFA_restore_extended: restoreextended,
DW_CFA_undefined: undefined,
DW_CFA_same_value: samevalue,
DW_CFA_register: register,
DW_CFA_remember_state: rememberstate,
DW_CFA_restore_state: restorestate,
DW_CFA_def_cfa: defcfa,
DW_CFA_def_cfa_register: defcfaregister,
DW_CFA_def_cfa_offset: defcfaoffset,
DW_CFA_def_cfa_expression: defcfaexpression,
DW_CFA_expression: expression,
DW_CFA_offset_extended_sf: offsetextendedsf,
DW_CFA_def_cfa_sf: defcfasf,
DW_CFA_def_cfa_offset_sf: defcfaoffsetsf,
DW_CFA_val_offset: valoffset,
DW_CFA_val_offset_sf: valoffsetsf,
DW_CFA_val_expression: valexpression,
DW_CFA_lo_user: louser,
DW_CFA_hi_user: hiuser,
}
func executeCIEInstructions(cie *CommonInformationEntry) *FrameContext {
initialInstructions := make([]byte, len(cie.InitialInstructions))
copy(initialInstructions, cie.InitialInstructions)
frame := &FrameContext{
cie: cie,
regs: make(map[uint64]DWRule),
initialRegs: make(map[uint64]DWRule),
prevRegs: make(map[uint64]DWRule),
codeAlignment: cie.CodeAlignmentFactor,
dataAlignment: cie.DataAlignmentFactor,
buf: bytes.NewBuffer(initialInstructions),
}
frame.ExecuteDwarfProgram()
return frame
}
// Unwind the stack to find the return address register.
func executeDwarfProgramUntilPC(fde *FrameDescriptionEntry, pc uint64) *FrameContext {
frame := executeCIEInstructions(fde.CIE)
frame.order = fde.order
frame.loc = fde.Begin()
frame.address = pc
fdeInstructions := make([]byte, len(fde.Instructions))
copy(fdeInstructions, fde.Instructions)
frame.ExecuteUntilPC(fdeInstructions)
return frame
}
func (frame *FrameContext) ExecuteDwarfProgram() {
for frame.buf.Len() > 0 {
executeDwarfInstruction(frame)
}
}
// Execute dwarf instructions.
func (frame *FrameContext) ExecuteUntilPC(instructions []byte) {
frame.buf.Truncate(0)
frame.buf.Write(instructions)
// We only need to execute the instructions until
// ctx.loc > ctx.addess (which is the address we
// are currently at in the traced process).
for frame.address >= frame.loc && frame.buf.Len() > 0 {
executeDwarfInstruction(frame)
}
}
func executeDwarfInstruction(frame *FrameContext) {
instruction, err := frame.buf.ReadByte()
if err != nil {
panic("Could not read from instruction buffer")
}
if instruction == DW_CFA_nop {
return
}
fn := lookupFunc(instruction, frame.buf)
fn(frame)
}
func lookupFunc(instruction byte, buf *bytes.Buffer) instruction {
const high_2_bits = 0xc0
var restore bool
// Special case the 3 opcodes that have their argument encoded in the opcode itself.
switch instruction & high_2_bits {
case DW_CFA_advance_loc:
instruction = DW_CFA_advance_loc
restore = true
case DW_CFA_offset:
instruction = DW_CFA_offset
restore = true
case DW_CFA_restore:
instruction = DW_CFA_restore
restore = true
}
if restore {
// Restore the last byte as it actually contains the argument for the opcode.
err := buf.UnreadByte()
if err != nil {
panic("Could not unread byte")
}
}
fn, ok := fnlookup[instruction]
if !ok {
panic(fmt.Sprintf("Encountered an unexpected DWARF CFA opcode: %#v", instruction))
}
return fn
}
func advanceloc(frame *FrameContext) {
b, err := frame.buf.ReadByte()
if err != nil {
panic("Could not read byte")
}
delta := b & low_6_offset
frame.loc += uint64(delta) * frame.codeAlignment
}
func advanceloc1(frame *FrameContext) {
delta, err := frame.buf.ReadByte()
if err != nil {
panic("Could not read byte")
}
frame.loc += uint64(delta) * frame.codeAlignment
}
func advanceloc2(frame *FrameContext) {
var delta uint16
binary.Read(frame.buf, frame.order, &delta)
frame.loc += uint64(delta) * frame.codeAlignment
}
func advanceloc4(frame *FrameContext) {
var delta uint32
binary.Read(frame.buf, frame.order, &delta)
frame.loc += uint64(delta) * frame.codeAlignment
}
func offset(frame *FrameContext) {
b, err := frame.buf.ReadByte()
if err != nil {
panic(err)
}
var (
reg = b & low_6_offset
offset, _ = util.DecodeULEB128(frame.buf)
)
frame.regs[uint64(reg)] = DWRule{offset: int64(offset) * frame.dataAlignment, rule: rule_offset}
}
func restore(frame *FrameContext) {
b, err := frame.buf.ReadByte()
if err != nil {
panic(err)
}
reg := uint64(b & low_6_offset)
oldrule, ok := frame.initialRegs[reg]
if ok {
frame.regs[reg] = DWRule{offset: oldrule.offset, rule: rule_offset}
} else {
frame.regs[reg] = DWRule{rule: rule_undefined}
}
}
func setloc(frame *FrameContext) {
var loc uint64
binary.Read(frame.buf, frame.order, &loc)
frame.loc = loc
}
func offsetextended(frame *FrameContext) {
var (
reg, _ = util.DecodeULEB128(frame.buf)
offset, _ = util.DecodeULEB128(frame.buf)
)
frame.regs[reg] = DWRule{offset: int64(offset) * frame.dataAlignment, rule: rule_offset}
}
func undefined(frame *FrameContext) {
reg, _ := util.DecodeULEB128(frame.buf)
frame.regs[reg] = DWRule{rule: rule_undefined}
}
func samevalue(frame *FrameContext) {
reg, _ := util.DecodeULEB128(frame.buf)
frame.regs[reg] = DWRule{rule: rule_sameval}
}
func register(frame *FrameContext) {
reg1, _ := util.DecodeULEB128(frame.buf)
reg2, _ := util.DecodeULEB128(frame.buf)
frame.regs[reg1] = DWRule{newreg: reg2, rule: rule_register}
}
func rememberstate(frame *FrameContext) {
frame.prevRegs = frame.regs
}
func restorestate(frame *FrameContext) {
frame.regs = frame.prevRegs
}
func restoreextended(frame *FrameContext) {
reg, _ := util.DecodeULEB128(frame.buf)
oldrule, ok := frame.initialRegs[reg]
if ok {
frame.regs[reg] = DWRule{offset: oldrule.offset, rule: rule_offset}
} else {
frame.regs[reg] = DWRule{rule: rule_undefined}
}
}
func defcfa(frame *FrameContext) {
reg, _ := util.DecodeULEB128(frame.buf)
offset, _ := util.DecodeULEB128(frame.buf)
frame.cfa.register = reg
frame.cfa.offset = int64(offset)
}
func defcfaregister(frame *FrameContext) {
reg, _ := util.DecodeULEB128(frame.buf)
frame.cfa.register = reg
}
func defcfaoffset(frame *FrameContext) {
offset, _ := util.DecodeULEB128(frame.buf)
frame.cfa.offset = int64(offset)
}
func defcfasf(frame *FrameContext) {
reg, _ := util.DecodeULEB128(frame.buf)
offset, _ := util.DecodeSLEB128(frame.buf)
frame.cfa.register = reg
frame.cfa.offset = offset * frame.dataAlignment
}
func defcfaoffsetsf(frame *FrameContext) {
offset, _ := util.DecodeSLEB128(frame.buf)
offset *= frame.dataAlignment
frame.cfa.offset = offset
}
func defcfaexpression(frame *FrameContext) {
var (
l, _ = util.DecodeULEB128(frame.buf)
expr = frame.buf.Next(int(l))
)
frame.cfa.expression = expr
frame.cfa.rule = rule_expression
}
func expression(frame *FrameContext) {
var (
reg, _ = util.DecodeULEB128(frame.buf)
l, _ = util.DecodeULEB128(frame.buf)
expr = frame.buf.Next(int(l))
)
frame.regs[reg] = DWRule{rule: rule_expression, expression: expr}
}
func offsetextendedsf(frame *FrameContext) {
var (
reg, _ = util.DecodeULEB128(frame.buf)
offset, _ = util.DecodeSLEB128(frame.buf)
)
frame.regs[reg] = DWRule{offset: offset * frame.dataAlignment, rule: rule_offset}
}
func valoffset(frame *FrameContext) {
var (
reg, _ = util.DecodeULEB128(frame.buf)
offset, _ = util.DecodeULEB128(frame.buf)
)
frame.regs[reg] = DWRule{offset: int64(offset), rule: rule_valoffset}
}
func valoffsetsf(frame *FrameContext) {
var (
reg, _ = util.DecodeULEB128(frame.buf)
offset, _ = util.DecodeSLEB128(frame.buf)
)
frame.regs[reg] = DWRule{offset: offset * frame.dataAlignment, rule: rule_valoffset}
}
func valexpression(frame *FrameContext) {
var (
reg, _ = util.DecodeULEB128(frame.buf)
l, _ = util.DecodeULEB128(frame.buf)
expr = frame.buf.Next(int(l))
)
frame.regs[reg] = DWRule{rule: rule_valexpression, expression: expr}
}
func louser(frame *FrameContext) {
frame.buf.Next(1)
}
func hiuser(frame *FrameContext) {
frame.buf.Next(1)
}

122
vendor/github.com/derekparker/delve/pkg/dwarf/line/line_parser.go generated vendored Normal file
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package line
import (
"bytes"
"encoding/binary"
"github.com/derekparker/delve/pkg/dwarf/util"
)
type DebugLinePrologue struct {
UnitLength uint32
Version uint16
Length uint32
MinInstrLength uint8
InitialIsStmt uint8
LineBase int8
LineRange uint8
OpcodeBase uint8
StdOpLengths []uint8
}
type DebugLineInfo struct {
Prologue *DebugLinePrologue
IncludeDirs []string
FileNames []*FileEntry
Instructions []byte
Lookup map[string]*FileEntry
}
type FileEntry struct {
Name string
DirIdx uint64
LastModTime uint64
Length uint64
}
type DebugLines []*DebugLineInfo
func (d *DebugLines) GetLineInfo(name string) *DebugLineInfo {
// Find in which table file exists and return it.
for _, l := range *d {
if _, ok := l.Lookup[name]; ok {
return l
}
}
return nil
}
func Parse(data []byte) DebugLines {
var (
lines = make(DebugLines, 0)
buf = bytes.NewBuffer(data)
)
// We have to parse multiple file name tables here.
for buf.Len() > 0 {
dbl := new(DebugLineInfo)
dbl.Lookup = make(map[string]*FileEntry)
parseDebugLinePrologue(dbl, buf)
parseIncludeDirs(dbl, buf)
parseFileEntries(dbl, buf)
// Instructions size calculation breakdown:
// - dbl.Prologue.UnitLength is the length of the entire unit, not including the 4 bytes to represent that length.
// - dbl.Prologue.Length is the length of the prologue not including unit length, version or prologue length itself.
// - So you have UnitLength - PrologueLength - (version_length_bytes(2) + prologue_length_bytes(4)).
dbl.Instructions = buf.Next(int(dbl.Prologue.UnitLength - dbl.Prologue.Length - 6))
lines = append(lines, dbl)
}
return lines
}
func parseDebugLinePrologue(dbl *DebugLineInfo, buf *bytes.Buffer) {
p := new(DebugLinePrologue)
p.UnitLength = binary.LittleEndian.Uint32(buf.Next(4))
p.Version = binary.LittleEndian.Uint16(buf.Next(2))
p.Length = binary.LittleEndian.Uint32(buf.Next(4))
p.MinInstrLength = uint8(buf.Next(1)[0])
p.InitialIsStmt = uint8(buf.Next(1)[0])
p.LineBase = int8(buf.Next(1)[0])
p.LineRange = uint8(buf.Next(1)[0])
p.OpcodeBase = uint8(buf.Next(1)[0])
p.StdOpLengths = make([]uint8, p.OpcodeBase-1)
binary.Read(buf, binary.LittleEndian, &p.StdOpLengths)
dbl.Prologue = p
}
func parseIncludeDirs(info *DebugLineInfo, buf *bytes.Buffer) {
for {
str, _ := util.ParseString(buf)
if str == "" {
break
}
info.IncludeDirs = append(info.IncludeDirs, str)
}
}
func parseFileEntries(info *DebugLineInfo, buf *bytes.Buffer) {
for {
entry := new(FileEntry)
name, _ := util.ParseString(buf)
if name == "" {
break
}
entry.Name = name
entry.DirIdx, _ = util.DecodeULEB128(buf)
entry.LastModTime, _ = util.DecodeULEB128(buf)
entry.Length, _ = util.DecodeULEB128(buf)
info.FileNames = append(info.FileNames, entry)
info.Lookup[name] = entry
}
}

267
vendor/github.com/derekparker/delve/pkg/dwarf/line/state_machine.go generated vendored Normal file
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package line
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"github.com/derekparker/delve/pkg/dwarf/util"
)
type Location struct {
File string
Line int
Address uint64
Delta int
}
type StateMachine struct {
dbl *DebugLineInfo
file string
line int
address uint64
column uint
isStmt bool
basicBlock bool
endSeq bool
lastWasStandard bool
lastDelta int
// valid is true if the current value of the state machine is the address of
// an instruction (using the terminology used by DWARF spec the current
// value of the state machine should be appended to the matrix representing
// the compilation unit)
valid bool
}
type opcodefn func(*StateMachine, *bytes.Buffer)
// Special opcodes
const (
DW_LNS_copy = 1
DW_LNS_advance_pc = 2
DW_LNS_advance_line = 3
DW_LNS_set_file = 4
DW_LNS_set_column = 5
DW_LNS_negate_stmt = 6
DW_LNS_set_basic_block = 7
DW_LNS_const_add_pc = 8
DW_LNS_fixed_advance_pc = 9
)
// Extended opcodes
const (
DW_LINE_end_sequence = 1
DW_LINE_set_address = 2
DW_LINE_define_file = 3
)
var standardopcodes = map[byte]opcodefn{
DW_LNS_copy: copyfn,
DW_LNS_advance_pc: advancepc,
DW_LNS_advance_line: advanceline,
DW_LNS_set_file: setfile,
DW_LNS_set_column: setcolumn,
DW_LNS_negate_stmt: negatestmt,
DW_LNS_set_basic_block: setbasicblock,
DW_LNS_const_add_pc: constaddpc,
DW_LNS_fixed_advance_pc: fixedadvancepc,
}
var extendedopcodes = map[byte]opcodefn{
DW_LINE_end_sequence: endsequence,
DW_LINE_set_address: setaddress,
DW_LINE_define_file: definefile,
}
func newStateMachine(dbl *DebugLineInfo) *StateMachine {
return &StateMachine{dbl: dbl, file: dbl.FileNames[0].Name, line: 1}
}
// Returns all PCs for a given file/line. Useful for loops where the 'for' line
// could be split amongst 2 PCs.
func (dbl *DebugLines) AllPCsForFileLine(f string, l int) (pcs []uint64) {
var (
foundFile bool
lastAddr uint64
lineInfo = dbl.GetLineInfo(f)
sm = newStateMachine(lineInfo)
buf = bytes.NewBuffer(lineInfo.Instructions)
)
for b, err := buf.ReadByte(); err == nil; b, err = buf.ReadByte() {
findAndExecOpcode(sm, buf, b)
if foundFile && sm.file != f {
return
}
if sm.line == l && sm.file == f && sm.address != lastAddr {
foundFile = true
if sm.valid {
pcs = append(pcs, sm.address)
}
line := sm.line
// Keep going until we're on a different line. We only care about
// when a line comes back around (i.e. for loop) so get to next line,
// and try to find the line we care about again.
for b, err := buf.ReadByte(); err == nil; b, err = buf.ReadByte() {
findAndExecOpcode(sm, buf, b)
if line < sm.line {
break
}
}
}
}
return
}
var NoSourceError = errors.New("no source available")
func (dbl *DebugLines) AllPCsBetween(begin, end uint64, filename string) ([]uint64, error) {
lineInfo := dbl.GetLineInfo(filename)
if lineInfo == nil {
return nil, NoSourceError
}
var (
pcs []uint64
lastaddr uint64
sm = newStateMachine(lineInfo)
buf = bytes.NewBuffer(lineInfo.Instructions)
)
for b, err := buf.ReadByte(); err == nil; b, err = buf.ReadByte() {
findAndExecOpcode(sm, buf, b)
if !sm.valid {
continue
}
if sm.address > end {
break
}
if sm.address >= begin && sm.address > lastaddr {
lastaddr = sm.address
pcs = append(pcs, sm.address)
}
}
return pcs, nil
}
func findAndExecOpcode(sm *StateMachine, buf *bytes.Buffer, b byte) {
switch {
case b == 0:
execExtendedOpcode(sm, b, buf)
case b < sm.dbl.Prologue.OpcodeBase:
execStandardOpcode(sm, b, buf)
default:
execSpecialOpcode(sm, b)
}
}
func execSpecialOpcode(sm *StateMachine, instr byte) {
var (
opcode = uint8(instr)
decoded = opcode - sm.dbl.Prologue.OpcodeBase
)
if sm.dbl.Prologue.InitialIsStmt == uint8(1) {
sm.isStmt = true
}
sm.lastDelta = int(sm.dbl.Prologue.LineBase + int8(decoded%sm.dbl.Prologue.LineRange))
sm.line += sm.lastDelta
sm.address += uint64(decoded/sm.dbl.Prologue.LineRange) * uint64(sm.dbl.Prologue.MinInstrLength)
sm.basicBlock = false
sm.lastWasStandard = false
sm.valid = true
}
func execExtendedOpcode(sm *StateMachine, instr byte, buf *bytes.Buffer) {
_, _ = util.DecodeULEB128(buf)
b, _ := buf.ReadByte()
fn, ok := extendedopcodes[b]
if !ok {
panic(fmt.Sprintf("Encountered unknown extended opcode %#v\n", b))
}
sm.lastWasStandard = false
sm.valid = false
fn(sm, buf)
}
func execStandardOpcode(sm *StateMachine, instr byte, buf *bytes.Buffer) {
fn, ok := standardopcodes[instr]
if !ok {
panic(fmt.Sprintf("Encountered unknown standard opcode %#v\n", instr))
}
sm.lastWasStandard = true
sm.valid = false
fn(sm, buf)
}
func copyfn(sm *StateMachine, buf *bytes.Buffer) {
sm.basicBlock = false
sm.valid = true
}
func advancepc(sm *StateMachine, buf *bytes.Buffer) {
addr, _ := util.DecodeULEB128(buf)
sm.address += addr * uint64(sm.dbl.Prologue.MinInstrLength)
}
func advanceline(sm *StateMachine, buf *bytes.Buffer) {
line, _ := util.DecodeSLEB128(buf)
sm.line += int(line)
sm.lastDelta = int(line)
}
func setfile(sm *StateMachine, buf *bytes.Buffer) {
i, _ := util.DecodeULEB128(buf)
sm.file = sm.dbl.FileNames[i-1].Name
}
func setcolumn(sm *StateMachine, buf *bytes.Buffer) {
c, _ := util.DecodeULEB128(buf)
sm.column = uint(c)
}
func negatestmt(sm *StateMachine, buf *bytes.Buffer) {
sm.isStmt = !sm.isStmt
}
func setbasicblock(sm *StateMachine, buf *bytes.Buffer) {
sm.basicBlock = true
}
func constaddpc(sm *StateMachine, buf *bytes.Buffer) {
sm.address += uint64((255-sm.dbl.Prologue.OpcodeBase)/sm.dbl.Prologue.LineRange) * uint64(sm.dbl.Prologue.MinInstrLength)
}
func fixedadvancepc(sm *StateMachine, buf *bytes.Buffer) {
var operand uint16
binary.Read(buf, binary.LittleEndian, &operand)
sm.address += uint64(operand)
}
func endsequence(sm *StateMachine, buf *bytes.Buffer) {
sm.endSeq = true
sm.valid = true
}
func setaddress(sm *StateMachine, buf *bytes.Buffer) {
var addr uint64
binary.Read(buf, binary.LittleEndian, &addr)
sm.address = addr
}
func definefile(sm *StateMachine, buf *bytes.Buffer) {
var (
_, _ = util.ParseString(buf)
_, _ = util.DecodeULEB128(buf)
_, _ = util.DecodeULEB128(buf)
_, _ = util.DecodeULEB128(buf)
)
// Don't do anything here yet.
}

84
vendor/github.com/derekparker/delve/pkg/dwarf/op/op.go generated vendored Normal file
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package op
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"github.com/derekparker/delve/pkg/dwarf/util"
)
const (
DW_OP_addr = 0x3
DW_OP_call_frame_cfa = 0x9c
DW_OP_plus = 0x22
DW_OP_consts = 0x11
DW_OP_plus_uconsts = 0x23
)
type stackfn func(*bytes.Buffer, []int64, int64) ([]int64, error)
var oplut = map[byte]stackfn{
DW_OP_call_frame_cfa: callframecfa,
DW_OP_plus: plus,
DW_OP_consts: consts,
DW_OP_addr: addr,
DW_OP_plus_uconsts: plusuconsts,
}
func ExecuteStackProgram(cfa int64, instructions []byte) (int64, error) {
stack := make([]int64, 0, 3)
buf := bytes.NewBuffer(instructions)
for opcode, err := buf.ReadByte(); err == nil; opcode, err = buf.ReadByte() {
fn, ok := oplut[opcode]
if !ok {
return 0, fmt.Errorf("invalid instruction %#v", opcode)
}
stack, err = fn(buf, stack, cfa)
if err != nil {
return 0, err
}
}
if len(stack) == 0 {
return 0, errors.New("empty OP stack")
}
return stack[len(stack)-1], nil
}
func callframecfa(buf *bytes.Buffer, stack []int64, cfa int64) ([]int64, error) {
if cfa == 0 {
return stack, fmt.Errorf("Could not retrieve CFA for current PC")
}
return append(stack, int64(cfa)), nil
}
func addr(buf *bytes.Buffer, stack []int64, cfa int64) ([]int64, error) {
return append(stack, int64(binary.LittleEndian.Uint64(buf.Next(8)))), nil
}
func plus(buf *bytes.Buffer, stack []int64, cfa int64) ([]int64, error) {
var (
slen = len(stack)
digits = stack[slen-2 : slen]
st = stack[:slen-2]
)
return append(st, digits[0]+digits[1]), nil
}
func plusuconsts(buf *bytes.Buffer, stack []int64, cfa int64) ([]int64, error) {
slen := len(stack)
num, _ := util.DecodeULEB128(buf)
stack[slen-1] = stack[slen-1] + int64(num)
return stack, nil
}
func consts(buf *bytes.Buffer, stack []int64, cfa int64) ([]int64, error) {
num, _ := util.DecodeSLEB128(buf)
return append(stack, num), nil
}

345
vendor/github.com/derekparker/delve/pkg/dwarf/reader/reader.go generated vendored Executable file
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package reader
import (
"errors"
"fmt"
"github.com/derekparker/delve/pkg/dwarf/op"
"golang.org/x/debug/dwarf"
)
type Reader struct {
*dwarf.Reader
depth int
}
// New returns a reader for the specified dwarf data.
func New(data *dwarf.Data) *Reader {
return &Reader{data.Reader(), 0}
}
// Seek moves the reader to an arbitrary offset.
func (reader *Reader) Seek(off dwarf.Offset) {
reader.depth = 0
reader.Reader.Seek(off)
}
// SeekToEntry moves the reader to an arbitrary entry.
func (reader *Reader) SeekToEntry(entry *dwarf.Entry) error {
reader.Seek(entry.Offset)
// Consume the current entry so .Next works as intended
_, err := reader.Next()
return err
}
// SeekToFunctionEntry moves the reader to the function that includes the
// specified program counter.
func (reader *Reader) SeekToFunction(pc uint64) (*dwarf.Entry, error) {
reader.Seek(0)
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
if entry.Tag != dwarf.TagSubprogram {
continue
}
lowpc, ok := entry.Val(dwarf.AttrLowpc).(uint64)
if !ok {
continue
}
highpc, ok := entry.Val(dwarf.AttrHighpc).(uint64)
if !ok {
continue
}
if lowpc <= pc && highpc > pc {
return entry, nil
}
}
return nil, fmt.Errorf("unable to find function context")
}
// Returns the address for the named entry.
func (reader *Reader) AddrFor(name string) (uint64, error) {
entry, err := reader.FindEntryNamed(name, false)
if err != nil {
return 0, err
}
instructions, ok := entry.Val(dwarf.AttrLocation).([]byte)
if !ok {
return 0, fmt.Errorf("type assertion failed")
}
addr, err := op.ExecuteStackProgram(0, instructions)
if err != nil {
return 0, err
}
return uint64(addr), nil
}
// Returns the address for the named struct member. Expects the reader to be at the parent entry
// or one of the parents children, thus does not seek to parent by itself.
func (reader *Reader) AddrForMember(member string, initialInstructions []byte) (uint64, error) {
for {
entry, err := reader.NextMemberVariable()
if err != nil {
return 0, err
}
if entry == nil {
return 0, fmt.Errorf("nil entry for member named %s", member)
}
name, ok := entry.Val(dwarf.AttrName).(string)
if !ok || name != member {
continue
}
instructions, ok := entry.Val(dwarf.AttrDataMemberLoc).([]byte)
if !ok {
continue
}
addr, err := op.ExecuteStackProgram(0, append(initialInstructions, instructions...))
return uint64(addr), err
}
}
var TypeNotFoundErr = errors.New("no type entry found, use 'types' for a list of valid types")
// SeekToType moves the reader to the type specified by the entry,
// optionally resolving typedefs and pointer types. If the reader is set
// to a struct type the NextMemberVariable call can be used to walk all member data.
func (reader *Reader) SeekToType(entry *dwarf.Entry, resolveTypedefs bool, resolvePointerTypes bool) (*dwarf.Entry, error) {
offset, ok := entry.Val(dwarf.AttrType).(dwarf.Offset)
if !ok {
return nil, fmt.Errorf("entry does not have a type attribute")
}
// Seek to the first type offset
reader.Seek(offset)
// Walk the types to the base
for typeEntry, err := reader.Next(); typeEntry != nil; typeEntry, err = reader.Next() {
if err != nil {
return nil, err
}
if typeEntry.Tag == dwarf.TagTypedef && !resolveTypedefs {
return typeEntry, nil
}
if typeEntry.Tag == dwarf.TagPointerType && !resolvePointerTypes {
return typeEntry, nil
}
offset, ok = typeEntry.Val(dwarf.AttrType).(dwarf.Offset)
if !ok {
return typeEntry, nil
}
reader.Seek(offset)
}
return nil, TypeNotFoundErr
}
func (reader *Reader) NextType() (*dwarf.Entry, error) {
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
switch entry.Tag {
case dwarf.TagArrayType, dwarf.TagBaseType, dwarf.TagClassType, dwarf.TagStructType, dwarf.TagUnionType, dwarf.TagConstType, dwarf.TagVolatileType, dwarf.TagRestrictType, dwarf.TagEnumerationType, dwarf.TagPointerType, dwarf.TagSubroutineType, dwarf.TagTypedef, dwarf.TagUnspecifiedType:
return entry, nil
}
}
return nil, nil
}
// SeekToTypeNamed moves the reader to the type specified by the name.
// If the reader is set to a struct type the NextMemberVariable call
// can be used to walk all member data.
func (reader *Reader) SeekToTypeNamed(name string) (*dwarf.Entry, error) {
// Walk the types to the base
for entry, err := reader.NextType(); entry != nil; entry, err = reader.NextType() {
if err != nil {
return nil, err
}
n, ok := entry.Val(dwarf.AttrName).(string)
if !ok {
continue
}
if n == name {
return entry, nil
}
}
return nil, TypeNotFoundErr
}
// Finds the entry for 'name'.
func (reader *Reader) FindEntryNamed(name string, member bool) (*dwarf.Entry, error) {
depth := 1
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
if entry.Children {
depth++
}
if entry.Tag == 0 {
depth--
if depth <= 0 {
return nil, fmt.Errorf("could not find symbol value for %s", name)
}
}
if member {
if entry.Tag != dwarf.TagMember {
continue
}
} else {
if entry.Tag != dwarf.TagVariable && entry.Tag != dwarf.TagFormalParameter && entry.Tag != dwarf.TagStructType {
continue
}
}
n, ok := entry.Val(dwarf.AttrName).(string)
if !ok || n != name {
continue
}
return entry, nil
}
return nil, fmt.Errorf("could not find symbol value for %s", name)
}
func (reader *Reader) InstructionsForEntryNamed(name string, member bool) ([]byte, error) {
entry, err := reader.FindEntryNamed(name, member)
if err != nil {
return nil, err
}
var attr dwarf.Attr
if member {
attr = dwarf.AttrDataMemberLoc
} else {
attr = dwarf.AttrLocation
}
instr, ok := entry.Val(attr).([]byte)
if !ok {
return nil, errors.New("invalid typecast for Dwarf instructions")
}
return instr, nil
}
func (reader *Reader) InstructionsForEntry(entry *dwarf.Entry) ([]byte, error) {
if entry.Tag == dwarf.TagMember {
instructions, ok := entry.Val(dwarf.AttrDataMemberLoc).([]byte)
if !ok {
return nil, fmt.Errorf("member data has no data member location attribute")
}
// clone slice to prevent stomping on the dwarf data
return append([]byte{}, instructions...), nil
}
// non-member
instructions, ok := entry.Val(dwarf.AttrLocation).([]byte)
if !ok {
return nil, fmt.Errorf("entry has no location attribute")
}
// clone slice to prevent stomping on the dwarf data
return append([]byte{}, instructions...), nil
}
// NextScopeVariable moves the reader to the next debug entry that describes a local variable and returns the entry.
func (reader *Reader) NextScopeVariable() (*dwarf.Entry, error) {
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
// All scope variables will be at the same depth
reader.SkipChildren()
// End of the current depth
if entry.Tag == 0 {
break
}
if entry.Tag == dwarf.TagVariable || entry.Tag == dwarf.TagFormalParameter {
return entry, nil
}
}
// No more items
return nil, nil
}
// NextMememberVariable moves the reader to the next debug entry that describes a member variable and returns the entry.
func (reader *Reader) NextMemberVariable() (*dwarf.Entry, error) {
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
// All member variables will be at the same depth
reader.SkipChildren()
// End of the current depth
if entry.Tag == 0 {
break
}
if entry.Tag == dwarf.TagMember {
return entry, nil
}
}
// No more items
return nil, nil
}
// NextPackageVariable moves the reader to the next debug entry that describes a package variable.
// Any TagVariable entry that is not inside a sub prgram entry and is marked external is considered a package variable.
func (reader *Reader) NextPackageVariable() (*dwarf.Entry, error) {
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
if entry.Tag == dwarf.TagVariable {
ext, ok := entry.Val(dwarf.AttrExternal).(bool)
if ok && ext {
return entry, nil
}
}
// Ignore everything inside sub programs
if entry.Tag == dwarf.TagSubprogram {
reader.SkipChildren()
}
}
// No more items
return nil, nil
}
func (reader *Reader) NextCompileUnit() (*dwarf.Entry, error) {
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return nil, err
}
if entry.Tag == dwarf.TagCompileUnit {
return entry, nil
}
}
return nil, nil
}

81
vendor/github.com/derekparker/delve/pkg/dwarf/util/util.go generated vendored Normal file
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package util
import "bytes"
// DecodeULEB128 decodes an unsigned Little Endian Base 128
// represented number.
func DecodeULEB128(buf *bytes.Buffer) (uint64, uint32) {
var (
result uint64
shift uint64
length uint32
)
if buf.Len() == 0 {
return 0, 0
}
for {
b, err := buf.ReadByte()
if err != nil {
panic("Could not parse ULEB128 value")
}
length++
result |= uint64((uint(b) & 0x7f) << shift)
// If high order bit is 1.
if b&0x80 == 0 {
break
}
shift += 7
}
return result, length
}
// DecodeSLEB128 decodes a signed Little Endian Base 128
// represented number.
func DecodeSLEB128(buf *bytes.Buffer) (int64, uint32) {
var (
b byte
err error
result int64
shift uint64
length uint32
)
if buf.Len() == 0 {
return 0, 0
}
for {
b, err = buf.ReadByte()
if err != nil {
panic("Could not parse SLEB128 value")
}
length++
result |= int64((int64(b) & 0x7f) << shift)
shift += 7
if b&0x80 == 0 {
break
}
}
if (shift < 8*uint64(length)) && (b&0x40 > 0) {
result |= -(1 << shift)
}
return result, length
}
func ParseString(data *bytes.Buffer) (string, uint32) {
str, err := data.ReadString(0x0)
if err != nil {
panic("Could not parse string")
}
return str[:len(str)-1], uint32(len(str))
}

79
vendor/github.com/derekparker/delve/pkg/proc/arch.go generated vendored Normal file
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package proc
import "runtime"
// Arch defines an interface for representing a
// CPU architecture.
type Arch interface {
SetGStructOffset(ver GoVersion, iscgo bool)
PtrSize() int
BreakpointInstruction() []byte
BreakpointSize() int
GStructOffset() uint64
}
// AMD64 represents the AMD64 CPU architecture.
type AMD64 struct {
ptrSize int
breakInstruction []byte
breakInstructionLen int
gStructOffset uint64
hardwareBreakpointUsage []bool
}
// AMD64Arch returns an initialized AMD64
// struct.
func AMD64Arch() *AMD64 {
var breakInstr = []byte{0xCC}
return &AMD64{
ptrSize: 8,
breakInstruction: breakInstr,
breakInstructionLen: len(breakInstr),
hardwareBreakpointUsage: make([]bool, 4),
}
}
// SetGStructOffset sets the offset of the G struct on the AMD64
// arch struct. The offset is dependent on the Go compiler Version
// and whether or not the target program was externally linked.
func (a *AMD64) SetGStructOffset(ver GoVersion, isextld bool) {
switch runtime.GOOS {
case "darwin":
a.gStructOffset = 0x8a0
case "linux":
a.gStructOffset = 0xfffffffffffffff0
if isextld || ver.AfterOrEqual(GoVersion{1, 5, -1, 2, 0}) || ver.IsDevel() {
a.gStructOffset += 8
}
case "windows":
// Use ArbitraryUserPointer (0x28) as pointer to pointer
// to G struct per:
// https://golang.org/src/runtime/cgo/gcc_windows_amd64.c
a.gStructOffset = 0x28
}
}
// PtrSize returns the size of a pointer
// on this architecture.
func (a *AMD64) PtrSize() int {
return a.ptrSize
}
// BreakpointInstruction returns the Breakpoint
// instruction for this architecture.
func (a *AMD64) BreakpointInstruction() []byte {
return a.breakInstruction
}
// BreakpointSize returns the size of the
// breakpoint instruction on this architecture.
func (a *AMD64) BreakpointSize() int {
return a.breakInstructionLen
}
// GStructOffset returns the offset of the G
// struct in thread local storage.
func (a *AMD64) GStructOffset() uint64 {
return a.gStructOffset
}

163
vendor/github.com/derekparker/delve/pkg/proc/breakpoints.go generated vendored Normal file
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package proc
import (
"errors"
"fmt"
"go/ast"
"go/constant"
"reflect"
)
// Breakpoint represents a breakpoint. Stores information on the break
// point including the byte of data that originally was stored at that
// address.
type Breakpoint struct {
// File & line information for printing.
FunctionName string
File string
Line int
Addr uint64 // Address breakpoint is set for.
OriginalData []byte // If software breakpoint, the data we replace with breakpoint instruction.
Name string // User defined name of the breakpoint
ID int // Monotonically increasing ID.
Kind BreakpointKind // Whether this is an internal breakpoint (for next'ing or stepping).
// Breakpoint information
Tracepoint bool // Tracepoint flag
Goroutine bool // Retrieve goroutine information
Stacktrace int // Number of stack frames to retrieve
Variables []string // Variables to evaluate
LoadArgs *LoadConfig
LoadLocals *LoadConfig
HitCount map[int]uint64 // Number of times a breakpoint has been reached in a certain goroutine
TotalHitCount uint64 // Number of times a breakpoint has been reached
// DeferReturns: when kind == NextDeferBreakpoint this breakpoint
// will also check if the caller is runtime.gopanic or if the return
// address is in the DeferReturns array.
// Next uses NextDeferBreakpoints for the breakpoint it sets on the
// deferred function, DeferReturns is populated with the
// addresses of calls to runtime.deferreturn in the current
// function. This insures that the breakpoint on the deferred
// function only triggers on panic or on the defer call to
// the function, not when the function is called directly
DeferReturns []uint64
// Cond: if not nil the breakpoint will be triggered only if evaluating Cond returns true
Cond ast.Expr
}
// Breakpoint Kind determines the behavior of delve when the
// breakpoint is reached.
type BreakpointKind int
const (
// UserBreakpoint is a user set breakpoint
UserBreakpoint BreakpointKind = iota
// NextBreakpoint is a breakpoint set by Next, Continue
// will stop on it and delete it
NextBreakpoint
// NextDeferBreakpoint is a breakpoint set by Next on the
// first deferred function. In addition to checking their condition
// breakpoints of this kind will also check that the function has been
// called by runtime.gopanic or through runtime.deferreturn.
NextDeferBreakpoint
// StepBreakpoint is a breakpoint set by Step on a CALL instruction,
// Continue will set a new breakpoint (of NextBreakpoint kind) on the
// destination of CALL, delete this breakpoint and then continue again
StepBreakpoint
)
func (bp *Breakpoint) String() string {
return fmt.Sprintf("Breakpoint %d at %#v %s:%d (%d)", bp.ID, bp.Addr, bp.File, bp.Line, bp.TotalHitCount)
}
// Clear this breakpoint appropriately depending on whether it is a
// hardware or software breakpoint.
func (bp *Breakpoint) Clear(thread *Thread) (*Breakpoint, error) {
if _, err := thread.writeMemory(uintptr(bp.Addr), bp.OriginalData); err != nil {
return nil, fmt.Errorf("could not clear breakpoint %s", err)
}
return bp, nil
}
// BreakpointExistsError is returned when trying to set a breakpoint at
// an address that already has a breakpoint set for it.
type BreakpointExistsError struct {
file string
line int
addr uint64
}
func (bpe BreakpointExistsError) Error() string {
return fmt.Sprintf("Breakpoint exists at %s:%d at %x", bpe.file, bpe.line, bpe.addr)
}
// InvalidAddressError represents the result of
// attempting to set a breakpoint at an invalid address.
type InvalidAddressError struct {
address uint64
}
func (iae InvalidAddressError) Error() string {
return fmt.Sprintf("Invalid address %#v\n", iae.address)
}
func (dbp *Process) writeSoftwareBreakpoint(thread *Thread, addr uint64) error {
_, err := thread.writeMemory(uintptr(addr), dbp.arch.BreakpointInstruction())
return err
}
func (bp *Breakpoint) checkCondition(thread *Thread) (bool, error) {
if bp.Cond == nil {
return true, nil
}
if bp.Kind == NextDeferBreakpoint {
frames, err := thread.Stacktrace(2)
if err == nil {
ispanic := len(frames) >= 3 && frames[2].Current.Fn != nil && frames[2].Current.Fn.Name == "runtime.gopanic"
isdeferreturn := false
if len(frames) >= 1 {
for _, pc := range bp.DeferReturns {
if frames[0].Ret == pc {
isdeferreturn = true
break
}
}
}
if !ispanic && !isdeferreturn {
return false, nil
}
}
}
scope, err := thread.Scope()
if err != nil {
return true, err
}
v, err := scope.evalAST(bp.Cond)
if err != nil {
return true, fmt.Errorf("error evaluating expression: %v", err)
}
if v.Unreadable != nil {
return true, fmt.Errorf("condition expression unreadable: %v", v.Unreadable)
}
if v.Kind != reflect.Bool {
return true, errors.New("condition expression not boolean")
}
return constant.BoolVal(v.Value), nil
}
// Internal returns true for breakpoints not set directly by the user.
func (bp *Breakpoint) Internal() bool {
return bp.Kind != UserBreakpoint
}
// NoBreakpointError is returned when trying to
// clear a breakpoint that does not exist.
type NoBreakpointError struct {
addr uint64
}
func (nbp NoBreakpointError) Error() string {
return fmt.Sprintf("no breakpoint at %#v", nbp.addr)
}

67
vendor/github.com/derekparker/delve/pkg/proc/disasm.go generated vendored Normal file
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@ -0,0 +1,67 @@
package proc
type AsmInstruction struct {
Loc Location
DestLoc *Location
Bytes []byte
Breakpoint bool
AtPC bool
Inst *ArchInst
}
type AssemblyFlavour int
const (
GNUFlavour = AssemblyFlavour(iota)
IntelFlavour
)
// Disassemble disassembles target memory between startPC and endPC
// If currentGoroutine is set and thread is stopped at a CALL instruction Disassemble will evaluate the argument of the CALL instruction using the thread's registers
// Be aware that the Bytes field of each returned instruction is a slice of a larger array of size endPC - startPC
func (thread *Thread) Disassemble(startPC, endPC uint64, currentGoroutine bool) ([]AsmInstruction, error) {
if thread.dbp.exited {
return nil, &ProcessExitedError{}
}
mem, err := thread.readMemory(uintptr(startPC), int(endPC-startPC))
if err != nil {
return nil, err
}
r := make([]AsmInstruction, 0, len(mem)/15)
pc := startPC
var curpc uint64
var regs Registers
if currentGoroutine {
regs, _ = thread.Registers(false)
if regs != nil {
curpc = regs.PC()
}
}
for len(mem) > 0 {
bp, atbp := thread.dbp.breakpoints[pc]
if atbp {
for i := range bp.OriginalData {
mem[i] = bp.OriginalData[i]
}
}
file, line, fn := thread.dbp.PCToLine(pc)
loc := Location{PC: pc, File: file, Line: line, Fn: fn}
inst, err := asmDecode(mem, pc)
if err == nil {
atpc := currentGoroutine && (curpc == pc)
destloc := thread.resolveCallArg(inst, atpc, regs)
r = append(r, AsmInstruction{Loc: loc, DestLoc: destloc, Bytes: mem[:inst.Len], Breakpoint: atbp, AtPC: atpc, Inst: inst})
pc += uint64(inst.Size())
mem = mem[inst.Size():]
} else {
r = append(r, AsmInstruction{Loc: loc, Bytes: mem[:1], Breakpoint: atbp, Inst: nil})
pc++
mem = mem[1:]
}
}
return r, nil
}

184
vendor/github.com/derekparker/delve/pkg/proc/disasm_amd64.go generated vendored Normal file
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package proc
import (
"debug/gosym"
"encoding/binary"
"rsc.io/x86/x86asm"
)
var maxInstructionLength uint64 = 15
type ArchInst x86asm.Inst
func asmDecode(mem []byte, pc uint64) (*ArchInst, error) {
inst, err := x86asm.Decode(mem, 64)
if err != nil {
return nil, err
}
patchPCRel(pc, &inst)
r := ArchInst(inst)
return &r, nil
}
func (inst *ArchInst) Size() int {
return inst.Len
}
// converts PC relative arguments to absolute addresses
func patchPCRel(pc uint64, inst *x86asm.Inst) {
for i := range inst.Args {
rel, isrel := inst.Args[i].(x86asm.Rel)
if isrel {
inst.Args[i] = x86asm.Imm(int64(pc) + int64(rel) + int64(inst.Len))
}
}
return
}
func (inst *AsmInstruction) Text(flavour AssemblyFlavour) string {
if inst.Inst == nil {
return "?"
}
var text string
switch flavour {
case GNUFlavour:
text = x86asm.GNUSyntax(x86asm.Inst(*inst.Inst))
case IntelFlavour:
fallthrough
default:
text = x86asm.IntelSyntax(x86asm.Inst(*inst.Inst))
}
if inst.IsCall() && inst.DestLoc != nil && inst.DestLoc.Fn != nil {
text += " " + inst.DestLoc.Fn.Name
}
return text
}
func (inst *AsmInstruction) IsCall() bool {
return inst.Inst.Op == x86asm.CALL || inst.Inst.Op == x86asm.LCALL
}
func (thread *Thread) resolveCallArg(inst *ArchInst, currentGoroutine bool, regs Registers) *Location {
if inst.Op != x86asm.CALL && inst.Op != x86asm.LCALL {
return nil
}
var pc uint64
var err error
switch arg := inst.Args[0].(type) {
case x86asm.Imm:
pc = uint64(arg)
case x86asm.Reg:
if !currentGoroutine || regs == nil {
return nil
}
pc, err = regs.Get(int(arg))
if err != nil {
return nil
}
case x86asm.Mem:
if !currentGoroutine || regs == nil {
return nil
}
if arg.Segment != 0 {
return nil
}
regs, err := thread.Registers(false)
if err != nil {
return nil
}
base, err1 := regs.Get(int(arg.Base))
index, err2 := regs.Get(int(arg.Index))
if err1 != nil || err2 != nil {
return nil
}
addr := uintptr(int64(base) + int64(index*uint64(arg.Scale)) + arg.Disp)
//TODO: should this always be 64 bits instead of inst.MemBytes?
pcbytes, err := thread.readMemory(addr, inst.MemBytes)
if err != nil {
return nil
}
pc = binary.LittleEndian.Uint64(pcbytes)
default:
return nil
}
file, line, fn := thread.dbp.PCToLine(pc)
if fn == nil {
return nil
}
return &Location{PC: pc, File: file, Line: line, Fn: fn}
}
type instrseq []x86asm.Op
// Possible stacksplit prologues are inserted by stacksplit in
// $GOROOT/src/cmd/internal/obj/x86/obj6.go.
// The stacksplit prologue will always begin with loading curg in CX, this
// instruction is added by load_g_cx in the same file and is either 1 or 2
// MOVs.
var prologues []instrseq
func init() {
var tinyStacksplit = instrseq{x86asm.CMP, x86asm.JBE}
var smallStacksplit = instrseq{x86asm.LEA, x86asm.CMP, x86asm.JBE}
var bigStacksplit = instrseq{x86asm.MOV, x86asm.CMP, x86asm.JE, x86asm.LEA, x86asm.SUB, x86asm.CMP, x86asm.JBE}
var unixGetG = instrseq{x86asm.MOV}
var windowsGetG = instrseq{x86asm.MOV, x86asm.MOV}
prologues = make([]instrseq, 0, 2*3)
for _, getG := range []instrseq{unixGetG, windowsGetG} {
for _, stacksplit := range []instrseq{tinyStacksplit, smallStacksplit, bigStacksplit} {
prologue := make(instrseq, 0, len(getG)+len(stacksplit))
prologue = append(prologue, getG...)
prologue = append(prologue, stacksplit...)
prologues = append(prologues, prologue)
}
}
}
// FirstPCAfterPrologue returns the address of the first instruction after the prologue for function fn
// If sameline is set FirstPCAfterPrologue will always return an address associated with the same line as fn.Entry
func (dbp *Process) FirstPCAfterPrologue(fn *gosym.Func, sameline bool) (uint64, error) {
text, err := dbp.CurrentThread().Disassemble(fn.Entry, fn.End, false)
if err != nil {
return fn.Entry, err
}
if len(text) <= 0 {
return fn.Entry, nil
}
for _, prologue := range prologues {
if len(prologue) >= len(text) {
continue
}
if checkPrologue(text, prologue) {
r := &text[len(prologue)]
if sameline {
if r.Loc.Line != text[0].Loc.Line {
return fn.Entry, nil
}
}
return r.Loc.PC, nil
}
}
return fn.Entry, nil
}
func checkPrologue(s []AsmInstruction, prologuePattern instrseq) bool {
line := s[0].Loc.Line
for i, op := range prologuePattern {
if s[i].Inst.Op != op || s[i].Loc.Line != line {
return false
}
}
return true
}

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vendor/github.com/derekparker/delve/pkg/proc/doc.go generated vendored Normal file
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// Package proc is a low-level package that provides methods to manipulate
// the process we are debugging.
//
// proc implements all core functionality including:
// * creating / attaching to a process
// * process manipulation (step, next, continue, halt)
// * methods to explore the memory of the process
//
package proc

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vendor/github.com/derekparker/delve/pkg/proc/eval.go generated vendored Normal file
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vendor/github.com/derekparker/delve/pkg/proc/exc.h generated vendored Normal file
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#ifndef _exc_user_
#define _exc_user_
/* Module exc */
#include <string.h>
#include <mach/ndr.h>
#include <mach/boolean.h>
#include <mach/kern_return.h>
#include <mach/notify.h>
#include <mach/mach_types.h>
#include <mach/message.h>
#include <mach/mig_errors.h>
#include <mach/port.h>
/* BEGIN VOUCHER CODE */
#ifndef KERNEL
#if defined(__has_include)
#if __has_include(<mach/mig_voucher_support.h>)
#ifndef USING_VOUCHERS
#define USING_VOUCHERS
#endif
#ifndef __VOUCHER_FORWARD_TYPE_DECLS__
#define __VOUCHER_FORWARD_TYPE_DECLS__
#ifdef __cplusplus
extern "C" {
#endif
extern boolean_t voucher_mach_msg_set(mach_msg_header_t *msg) __attribute__((weak_import));
#ifdef __cplusplus
}
#endif
#endif // __VOUCHER_FORWARD_TYPE_DECLS__
#endif // __has_include(<mach/mach_voucher_types.h>)
#endif // __has_include
#endif // !KERNEL
/* END VOUCHER CODE */
#ifdef AUTOTEST
#ifndef FUNCTION_PTR_T
#define FUNCTION_PTR_T
typedef void (*function_ptr_t)(mach_port_t, char *, mach_msg_type_number_t);
typedef struct {
char *name;
function_ptr_t function;
} function_table_entry;
typedef function_table_entry *function_table_t;
#endif /* FUNCTION_PTR_T */
#endif /* AUTOTEST */
#ifndef exc_MSG_COUNT
#define exc_MSG_COUNT 3
#endif /* exc_MSG_COUNT */
#include <mach/std_types.h>
#include <mach/mig.h>
#include <mach/mig.h>
#include <mach/mach_types.h>
#ifdef __BeforeMigUserHeader
__BeforeMigUserHeader
#endif /* __BeforeMigUserHeader */
#include <sys/cdefs.h>
__BEGIN_DECLS
/* Routine exception_raise */
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
kern_return_t exception_raise
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
exception_data_t code,
mach_msg_type_number_t codeCnt
);
/* Routine exception_raise_state */
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
kern_return_t exception_raise_state
(
mach_port_t exception_port,
exception_type_t exception,
const exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
const thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
);
/* Routine exception_raise_state_identity */
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
kern_return_t exception_raise_state_identity
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
);
__END_DECLS
/********************** Caution **************************/
/* The following data types should be used to calculate */
/* maximum message sizes only. The actual message may be */
/* smaller, and the position of the arguments within the */
/* message layout may vary from what is presented here. */
/* For example, if any of the arguments are variable- */
/* sized, and less than the maximum is sent, the data */
/* will be packed tight in the actual message to reduce */
/* the presence of holes. */
/********************** Caution **************************/
/* typedefs for all requests */
#ifndef __Request__exc_subsystem__defined
#define __Request__exc_subsystem__defined
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
} __Request__exception_raise_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} __Request__exception_raise_state_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} __Request__exception_raise_state_identity_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#endif /* !__Request__exc_subsystem__defined */
/* union of all requests */
#ifndef __RequestUnion__exc_subsystem__defined
#define __RequestUnion__exc_subsystem__defined
union __RequestUnion__exc_subsystem {
__Request__exception_raise_t Request_exception_raise;
__Request__exception_raise_state_t Request_exception_raise_state;
__Request__exception_raise_state_identity_t Request_exception_raise_state_identity;
};
#endif /* !__RequestUnion__exc_subsystem__defined */
/* typedefs for all replies */
#ifndef __Reply__exc_subsystem__defined
#define __Reply__exc_subsystem__defined
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
} __Reply__exception_raise_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply__exception_raise_state_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply__exception_raise_state_identity_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#endif /* !__Reply__exc_subsystem__defined */
/* union of all replies */
#ifndef __ReplyUnion__exc_subsystem__defined
#define __ReplyUnion__exc_subsystem__defined
union __ReplyUnion__exc_subsystem {
__Reply__exception_raise_t Reply_exception_raise;
__Reply__exception_raise_state_t Reply_exception_raise_state;
__Reply__exception_raise_state_identity_t Reply_exception_raise_state_identity;
};
#endif /* !__RequestUnion__exc_subsystem__defined */
#ifndef subsystem_to_name_map_exc
#define subsystem_to_name_map_exc \
{ "exception_raise", 2401 },\
{ "exception_raise_state", 2402 },\
{ "exception_raise_state_identity", 2403 }
#endif
#ifdef __AfterMigUserHeader
__AfterMigUserHeader
#endif /* __AfterMigUserHeader */
#endif /* _exc_user_ */

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vendor/github.com/derekparker/delve/pkg/proc/exc_user_darwin.c generated vendored Normal file
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/*
* IDENTIFICATION:
* stub generated Sun Feb 22 20:54:31 2015
* with a MiG generated by bootstrap_cmds-91
* OPTIONS:
*/
#define __MIG_check__Reply__exc_subsystem__ 1
#include "exc.h"
#ifndef mig_internal
#define mig_internal static __inline__
#endif /* mig_internal */
#ifndef mig_external
#define mig_external
#endif /* mig_external */
#if !defined(__MigTypeCheck) && defined(TypeCheck)
#define __MigTypeCheck TypeCheck /* Legacy setting */
#endif /* !defined(__MigTypeCheck) */
#if !defined(__MigKernelSpecificCode) && defined(_MIG_KERNEL_SPECIFIC_CODE_)
#define __MigKernelSpecificCode _MIG_KERNEL_SPECIFIC_CODE_ /* Legacy setting */
#endif /* !defined(__MigKernelSpecificCode) */
#ifndef LimitCheck
#define LimitCheck 0
#endif /* LimitCheck */
#ifndef min
#define min(a,b) ( ((a) < (b))? (a): (b) )
#endif /* min */
#if !defined(_WALIGN_)
#define _WALIGN_(x) (((x) + 3) & ~3)
#endif /* !defined(_WALIGN_) */
#if !defined(_WALIGNSZ_)
#define _WALIGNSZ_(x) _WALIGN_(sizeof(x))
#endif /* !defined(_WALIGNSZ_) */
#ifndef UseStaticTemplates
#define UseStaticTemplates 0
#endif /* UseStaticTemplates */
#ifndef __MachMsgErrorWithTimeout
#define __MachMsgErrorWithTimeout(_R_) { \
switch (_R_) { \
case MACH_SEND_INVALID_DATA: \
case MACH_SEND_INVALID_DEST: \
case MACH_SEND_INVALID_HEADER: \
mig_put_reply_port(InP->Head.msgh_reply_port); \
break; \
case MACH_SEND_TIMED_OUT: \
case MACH_RCV_TIMED_OUT: \
default: \
mig_dealloc_reply_port(InP->Head.msgh_reply_port); \
} \
}
#endif /* __MachMsgErrorWithTimeout */
#ifndef __MachMsgErrorWithoutTimeout
#define __MachMsgErrorWithoutTimeout(_R_) { \
switch (_R_) { \
case MACH_SEND_INVALID_DATA: \
case MACH_SEND_INVALID_DEST: \
case MACH_SEND_INVALID_HEADER: \
mig_put_reply_port(InP->Head.msgh_reply_port); \
break; \
default: \
mig_dealloc_reply_port(InP->Head.msgh_reply_port); \
} \
}
#endif /* __MachMsgErrorWithoutTimeout */
#ifndef __DeclareSendRpc
#define __DeclareSendRpc(_NUM_, _NAME_)
#endif /* __DeclareSendRpc */
#ifndef __BeforeSendRpc
#define __BeforeSendRpc(_NUM_, _NAME_)
#endif /* __BeforeSendRpc */
#ifndef __AfterSendRpc
#define __AfterSendRpc(_NUM_, _NAME_)
#endif /* __AfterSendRpc */
#ifndef __DeclareSendSimple
#define __DeclareSendSimple(_NUM_, _NAME_)
#endif /* __DeclareSendSimple */
#ifndef __BeforeSendSimple
#define __BeforeSendSimple(_NUM_, _NAME_)
#endif /* __BeforeSendSimple */
#ifndef __AfterSendSimple
#define __AfterSendSimple(_NUM_, _NAME_)
#endif /* __AfterSendSimple */
#define msgh_request_port msgh_remote_port
#define msgh_reply_port msgh_local_port
#if ( __MigTypeCheck )
#if __MIG_check__Reply__exc_subsystem__
#if !defined(__MIG_check__Reply__exception_raise_t__defined)
#define __MIG_check__Reply__exception_raise_t__defined
mig_internal kern_return_t __MIG_check__Reply__exception_raise_t(__Reply__exception_raise_t *Out0P)
{
typedef __Reply__exception_raise_t __Reply;
if (Out0P->Head.msgh_id != 2501) {
if (Out0P->Head.msgh_id == MACH_NOTIFY_SEND_ONCE)
{ return MIG_SERVER_DIED; }
else
{ return MIG_REPLY_MISMATCH; }
}
#if __MigTypeCheck
if ((Out0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) ||
(Out0P->Head.msgh_size != (mach_msg_size_t)sizeof(__Reply)))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
{
return Out0P->RetCode;
}
}
#endif /* !defined(__MIG_check__Reply__exception_raise_t__defined) */
#endif /* __MIG_check__Reply__exc_subsystem__ */
#endif /* ( __MigTypeCheck ) */
/* Routine exception_raise */
mig_external kern_return_t exception_raise
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
exception_data_t code,
mach_msg_type_number_t codeCnt
)
{
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
} Request;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
mach_msg_trailer_t trailer;
} Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
} __Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
/*
* typedef struct {
* mach_msg_header_t Head;
* NDR_record_t NDR;
* kern_return_t RetCode;
* } mig_reply_error_t;
*/
union {
Request In;
Reply Out;
} Mess;
Request *InP = &Mess.In;
Reply *Out0P = &Mess.Out;
mach_msg_return_t msg_result;
unsigned int msgh_size;
#ifdef __MIG_check__Reply__exception_raise_t__defined
kern_return_t check_result;
#endif /* __MIG_check__Reply__exception_raise_t__defined */
__DeclareSendRpc(2401, "exception_raise")
#if UseStaticTemplates
const static mach_msg_port_descriptor_t threadTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
#if UseStaticTemplates
const static mach_msg_port_descriptor_t taskTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
InP->msgh_body.msgh_descriptor_count = 2;
#if UseStaticTemplates
InP->thread = threadTemplate;
InP->thread.name = thread;
#else /* UseStaticTemplates */
InP->thread.name = thread;
InP->thread.disposition = 19;
InP->thread.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
#if UseStaticTemplates
InP->task = taskTemplate;
InP->task.name = task;
#else /* UseStaticTemplates */
InP->task.name = task;
InP->task.disposition = 19;
InP->task.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
InP->NDR = NDR_record;
InP->exception = exception;
if (codeCnt > 2) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->code, (const char *) code, 4 * codeCnt);
InP->codeCnt = codeCnt;
msgh_size = (mach_msg_size_t)(sizeof(Request) - 8) + ((4 * codeCnt));
InP->Head.msgh_bits = MACH_MSGH_BITS_COMPLEX|
MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
/* msgh_size passed as argument */
InP->Head.msgh_request_port = exception_port;
InP->Head.msgh_reply_port = mig_get_reply_port();
InP->Head.msgh_id = 2401;
/* BEGIN VOUCHER CODE */
#ifdef USING_VOUCHERS
if (voucher_mach_msg_set != NULL) {
voucher_mach_msg_set(&InP->Head);
}
#endif // USING_VOUCHERS
/* END VOUCHER CODE */
__BeforeSendRpc(2401, "exception_raise")
msg_result = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_RCV_MSG|MACH_MSG_OPTION_NONE, msgh_size, (mach_msg_size_t)sizeof(Reply), InP->Head.msgh_reply_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
__AfterSendRpc(2401, "exception_raise")
if (msg_result != MACH_MSG_SUCCESS) {
__MachMsgErrorWithoutTimeout(msg_result);
{ return msg_result; }
}
#if defined(__MIG_check__Reply__exception_raise_t__defined)
check_result = __MIG_check__Reply__exception_raise_t((__Reply__exception_raise_t *)Out0P);
if (check_result != MACH_MSG_SUCCESS)
{ return check_result; }
#endif /* defined(__MIG_check__Reply__exception_raise_t__defined) */
return KERN_SUCCESS;
}
#if ( __MigTypeCheck )
#if __MIG_check__Reply__exc_subsystem__
#if !defined(__MIG_check__Reply__exception_raise_state_t__defined)
#define __MIG_check__Reply__exception_raise_state_t__defined
mig_internal kern_return_t __MIG_check__Reply__exception_raise_state_t(__Reply__exception_raise_state_t *Out0P)
{
typedef __Reply__exception_raise_state_t __Reply;
#if __MigTypeCheck
unsigned int msgh_size;
#endif /* __MigTypeCheck */
if (Out0P->Head.msgh_id != 2502) {
if (Out0P->Head.msgh_id == MACH_NOTIFY_SEND_ONCE)
{ return MIG_SERVER_DIED; }
else
{ return MIG_REPLY_MISMATCH; }
}
#if __MigTypeCheck
msgh_size = Out0P->Head.msgh_size;
if ((Out0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) ||
((msgh_size > (mach_msg_size_t)sizeof(__Reply) || msgh_size < (mach_msg_size_t)(sizeof(__Reply) - 896)) &&
(msgh_size != (mach_msg_size_t)sizeof(mig_reply_error_t) ||
Out0P->RetCode == KERN_SUCCESS)))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
if (Out0P->RetCode != KERN_SUCCESS) {
return ((mig_reply_error_t *)Out0P)->RetCode;
}
#if __MigTypeCheck
if ( Out0P->new_stateCnt > 224 )
return MIG_TYPE_ERROR;
if (((msgh_size - (mach_msg_size_t)(sizeof(__Reply) - 896)) / 4< Out0P->new_stateCnt) ||
(msgh_size != (mach_msg_size_t)(sizeof(__Reply) - 896) + Out0P->new_stateCnt * 4))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
return MACH_MSG_SUCCESS;
}
#endif /* !defined(__MIG_check__Reply__exception_raise_state_t__defined) */
#endif /* __MIG_check__Reply__exc_subsystem__ */
#endif /* ( __MigTypeCheck ) */
/* Routine exception_raise_state */
mig_external kern_return_t exception_raise_state
(
mach_port_t exception_port,
exception_type_t exception,
const exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
const thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
)
{
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} Request;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
mach_msg_trailer_t trailer;
} Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
/*
* typedef struct {
* mach_msg_header_t Head;
* NDR_record_t NDR;
* kern_return_t RetCode;
* } mig_reply_error_t;
*/
union {
Request In;
Reply Out;
} Mess;
Request *InP = &Mess.In;
Reply *Out0P = &Mess.Out;
mach_msg_return_t msg_result;
unsigned int msgh_size;
unsigned int msgh_size_delta;
#ifdef __MIG_check__Reply__exception_raise_state_t__defined
kern_return_t check_result;
#endif /* __MIG_check__Reply__exception_raise_state_t__defined */
__DeclareSendRpc(2402, "exception_raise_state")
InP->NDR = NDR_record;
InP->exception = exception;
if (codeCnt > 2) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->code, (const char *) code, 4 * codeCnt);
InP->codeCnt = codeCnt;
msgh_size_delta = (4 * codeCnt);
msgh_size = (mach_msg_size_t)(sizeof(Request) - 904) + msgh_size_delta;
InP = (Request *) ((pointer_t) InP + msgh_size_delta - 8);
InP->flavor = *flavor;
if (old_stateCnt > 224) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->old_state, (const char *) old_state, 4 * old_stateCnt);
InP->old_stateCnt = old_stateCnt;
msgh_size += (4 * old_stateCnt);
InP = &Mess.In;
InP->Head.msgh_bits =
MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
/* msgh_size passed as argument */
InP->Head.msgh_request_port = exception_port;
InP->Head.msgh_reply_port = mig_get_reply_port();
InP->Head.msgh_id = 2402;
/* BEGIN VOUCHER CODE */
#ifdef USING_VOUCHERS
if (voucher_mach_msg_set != NULL) {
voucher_mach_msg_set(&InP->Head);
}
#endif // USING_VOUCHERS
/* END VOUCHER CODE */
__BeforeSendRpc(2402, "exception_raise_state")
msg_result = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_RCV_MSG|MACH_MSG_OPTION_NONE, msgh_size, (mach_msg_size_t)sizeof(Reply), InP->Head.msgh_reply_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
__AfterSendRpc(2402, "exception_raise_state")
if (msg_result != MACH_MSG_SUCCESS) {
__MachMsgErrorWithoutTimeout(msg_result);
{ return msg_result; }
}
#if defined(__MIG_check__Reply__exception_raise_state_t__defined)
check_result = __MIG_check__Reply__exception_raise_state_t((__Reply__exception_raise_state_t *)Out0P);
if (check_result != MACH_MSG_SUCCESS)
{ return check_result; }
#endif /* defined(__MIG_check__Reply__exception_raise_state_t__defined) */
*flavor = Out0P->flavor;
if (Out0P->new_stateCnt > 224) {
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * 224);
*new_stateCnt = Out0P->new_stateCnt;
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * Out0P->new_stateCnt);
*new_stateCnt = Out0P->new_stateCnt;
return KERN_SUCCESS;
}
#if ( __MigTypeCheck )
#if __MIG_check__Reply__exc_subsystem__
#if !defined(__MIG_check__Reply__exception_raise_state_identity_t__defined)
#define __MIG_check__Reply__exception_raise_state_identity_t__defined
mig_internal kern_return_t __MIG_check__Reply__exception_raise_state_identity_t(__Reply__exception_raise_state_identity_t *Out0P)
{
typedef __Reply__exception_raise_state_identity_t __Reply;
#if __MigTypeCheck
unsigned int msgh_size;
#endif /* __MigTypeCheck */
if (Out0P->Head.msgh_id != 2503) {
if (Out0P->Head.msgh_id == MACH_NOTIFY_SEND_ONCE)
{ return MIG_SERVER_DIED; }
else
{ return MIG_REPLY_MISMATCH; }
}
#if __MigTypeCheck
msgh_size = Out0P->Head.msgh_size;
if ((Out0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) ||
((msgh_size > (mach_msg_size_t)sizeof(__Reply) || msgh_size < (mach_msg_size_t)(sizeof(__Reply) - 896)) &&
(msgh_size != (mach_msg_size_t)sizeof(mig_reply_error_t) ||
Out0P->RetCode == KERN_SUCCESS)))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
if (Out0P->RetCode != KERN_SUCCESS) {
return ((mig_reply_error_t *)Out0P)->RetCode;
}
#if __MigTypeCheck
if ( Out0P->new_stateCnt > 224 )
return MIG_TYPE_ERROR;
if (((msgh_size - (mach_msg_size_t)(sizeof(__Reply) - 896)) / 4< Out0P->new_stateCnt) ||
(msgh_size != (mach_msg_size_t)(sizeof(__Reply) - 896) + Out0P->new_stateCnt * 4))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
return MACH_MSG_SUCCESS;
}
#endif /* !defined(__MIG_check__Reply__exception_raise_state_identity_t__defined) */
#endif /* __MIG_check__Reply__exc_subsystem__ */
#endif /* ( __MigTypeCheck ) */
/* Routine exception_raise_state_identity */
mig_external kern_return_t exception_raise_state_identity
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
)
{
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} Request;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
mach_msg_trailer_t trailer;
} Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
/*
* typedef struct {
* mach_msg_header_t Head;
* NDR_record_t NDR;
* kern_return_t RetCode;
* } mig_reply_error_t;
*/
union {
Request In;
Reply Out;
} Mess;
Request *InP = &Mess.In;
Reply *Out0P = &Mess.Out;
mach_msg_return_t msg_result;
unsigned int msgh_size;
unsigned int msgh_size_delta;
#ifdef __MIG_check__Reply__exception_raise_state_identity_t__defined
kern_return_t check_result;
#endif /* __MIG_check__Reply__exception_raise_state_identity_t__defined */
__DeclareSendRpc(2403, "exception_raise_state_identity")
#if UseStaticTemplates
const static mach_msg_port_descriptor_t threadTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
#if UseStaticTemplates
const static mach_msg_port_descriptor_t taskTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
InP->msgh_body.msgh_descriptor_count = 2;
#if UseStaticTemplates
InP->thread = threadTemplate;
InP->thread.name = thread;
#else /* UseStaticTemplates */
InP->thread.name = thread;
InP->thread.disposition = 19;
InP->thread.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
#if UseStaticTemplates
InP->task = taskTemplate;
InP->task.name = task;
#else /* UseStaticTemplates */
InP->task.name = task;
InP->task.disposition = 19;
InP->task.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
InP->NDR = NDR_record;
InP->exception = exception;
if (codeCnt > 2) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->code, (const char *) code, 4 * codeCnt);
InP->codeCnt = codeCnt;
msgh_size_delta = (4 * codeCnt);
msgh_size = (mach_msg_size_t)(sizeof(Request) - 904) + msgh_size_delta;
InP = (Request *) ((pointer_t) InP + msgh_size_delta - 8);
InP->flavor = *flavor;
if (old_stateCnt > 224) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->old_state, (const char *) old_state, 4 * old_stateCnt);
InP->old_stateCnt = old_stateCnt;
msgh_size += (4 * old_stateCnt);
InP = &Mess.In;
InP->Head.msgh_bits = MACH_MSGH_BITS_COMPLEX|
MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
/* msgh_size passed as argument */
InP->Head.msgh_request_port = exception_port;
InP->Head.msgh_reply_port = mig_get_reply_port();
InP->Head.msgh_id = 2403;
/* BEGIN VOUCHER CODE */
#ifdef USING_VOUCHERS
if (voucher_mach_msg_set != NULL) {
voucher_mach_msg_set(&InP->Head);
}
#endif // USING_VOUCHERS
/* END VOUCHER CODE */
__BeforeSendRpc(2403, "exception_raise_state_identity")
msg_result = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_RCV_MSG|MACH_MSG_OPTION_NONE, msgh_size, (mach_msg_size_t)sizeof(Reply), InP->Head.msgh_reply_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
__AfterSendRpc(2403, "exception_raise_state_identity")
if (msg_result != MACH_MSG_SUCCESS) {
__MachMsgErrorWithoutTimeout(msg_result);
{ return msg_result; }
}
#if defined(__MIG_check__Reply__exception_raise_state_identity_t__defined)
check_result = __MIG_check__Reply__exception_raise_state_identity_t((__Reply__exception_raise_state_identity_t *)Out0P);
if (check_result != MACH_MSG_SUCCESS)
{ return check_result; }
#endif /* defined(__MIG_check__Reply__exception_raise_state_identity_t__defined) */
*flavor = Out0P->flavor;
if (Out0P->new_stateCnt > 224) {
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * 224);
*new_stateCnt = Out0P->new_stateCnt;
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * Out0P->new_stateCnt);
*new_stateCnt = Out0P->new_stateCnt;
return KERN_SUCCESS;
}

112
vendor/github.com/derekparker/delve/pkg/proc/exec_darwin.c generated vendored Normal file
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#include "exec_darwin.h"
#include "stdio.h"
extern char** environ;
int
close_exec_pipe(int fd[2]) {
if (pipe(fd) < 0) return -1;
if (fcntl(fd[0], F_SETFD, FD_CLOEXEC) < 0) return -1;
if (fcntl(fd[1], F_SETFD, FD_CLOEXEC) < 0) return -1;
return 0;
}
int
fork_exec(char *argv0, char **argv, int size,
char *wd,
task_t *task,
mach_port_t *port_set,
mach_port_t *exception_port,
mach_port_t *notification_port)
{
// Since we're using mach exceptions instead of signals,
// we need to coordinate between parent and child via pipes
// to ensure that the parent has set the exception ports on
// the child task before it execs.
int fd[2];
if (close_exec_pipe(fd) < 0) return -1;
// Create another pipe to signal the parent on exec.
int efd[2];
if (close_exec_pipe(efd) < 0) return -1;
kern_return_t kret;
pid_t pid = fork();
if (pid > 0) {
// In parent.
close(fd[0]);
close(efd[1]);
kret = acquire_mach_task(pid, task, port_set, exception_port, notification_port);
if (kret != KERN_SUCCESS) return -1;
char msg = 'c';
write(fd[1], &msg, 1);
close(fd[1]);
char w;
size_t n = read(efd[0], &w, 1);
close(efd[0]);
if (n != 0) {
// Child died, reap it.
waitpid(pid, NULL, 0);
return -1;
}
return pid;
}
// Fork succeeded, we are in the child.
int pret, cret;
char sig;
close(fd[1]);
read(fd[0], &sig, 1);
close(fd[0]);
// Create a new process group.
if (setpgid(0, 0) < 0) {
perror("setpgid");
exit(1);
}
// Set errno to zero before a call to ptrace.
// It is documented that ptrace can return -1 even
// for successful calls.
errno = 0;
pret = ptrace(PT_TRACE_ME, 0, 0, 0);
if (pret != 0 && errno != 0) {
perror("ptrace");
exit(1);
}
// Change working directory if wd is not empty.
if (wd && wd[0]) {
errno = 0;
cret = chdir(wd);
if (cret != 0 && errno != 0) {
char *error_msg;
asprintf(&error_msg, "%s '%s'", "chdir", wd);
perror(error_msg);
exit(1);
}
}
errno = 0;
pret = ptrace(PT_SIGEXC, 0, 0, 0);
if (pret != 0 && errno != 0) {
perror("ptrace");
exit(1);
}
sleep(1);
// Create the child process.
execve(argv0, argv, environ);
// We should never reach here, but if we did something went wrong.
// Write a message to parent to alert that exec failed.
char msg = 'd';
write(efd[1], &msg, 1);
close(efd[1]);
exit(1);
}

10
vendor/github.com/derekparker/delve/pkg/proc/exec_darwin.h generated vendored Normal file
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#include "proc_darwin.h"
#include <unistd.h>
#include <sys/ptrace.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>
int
fork_exec(char *, char **, int, char *, task_t*, mach_port_t*, mach_port_t*, mach_port_t*);

117
vendor/github.com/derekparker/delve/pkg/proc/go_version.go generated vendored Normal file
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package proc
import (
"strconv"
"strings"
)
// GoVersion represents the Go version of
// the Go compiler version used to compile
// the target binary.
type GoVersion struct {
Major int
Minor int
Rev int
Beta int
RC int
}
var (
GoVer18Beta = GoVersion{1, 8, -1, 0, 0}
)
func ParseVersionString(ver string) (GoVersion, bool) {
var r GoVersion
var err1, err2, err3 error
if strings.HasPrefix(ver, "devel") {
return GoVersion{-1, 0, 0, 0, 0}, true
}
if strings.HasPrefix(ver, "go") {
ver := strings.Split(ver, " ")[0]
v := strings.SplitN(ver[2:], ".", 3)
switch len(v) {
case 2:
r.Major, err1 = strconv.Atoi(v[0])
vr := strings.SplitN(v[1], "beta", 2)
if len(vr) == 2 {
r.Beta, err3 = strconv.Atoi(vr[1])
} else {
vr = strings.SplitN(v[1], "rc", 2)
if len(vr) == 2 {
r.RC, err3 = strconv.Atoi(vr[1])
} else {
r.Minor, err2 = strconv.Atoi(v[1])
if err2 != nil {
return GoVersion{}, false
}
return r, true
}
}
r.Minor, err2 = strconv.Atoi(vr[0])
r.Rev = -1
if err1 != nil || err2 != nil || err3 != nil {
return GoVersion{}, false
}
return r, true
case 3:
r.Major, err1 = strconv.Atoi(v[0])
r.Minor, err2 = strconv.Atoi(v[1])
r.Rev, err3 = strconv.Atoi(v[2])
if err1 != nil || err2 != nil || err3 != nil {
return GoVersion{}, false
}
return r, true
default:
return GoVersion{}, false
}
}
return GoVersion{}, false
}
// AfterOrEqual returns whether one GoVersion is after or
// equal to the other.
func (v *GoVersion) AfterOrEqual(b GoVersion) bool {
if v.Major < b.Major {
return false
} else if v.Major > b.Major {
return true
}
if v.Minor < b.Minor {
return false
} else if v.Minor > b.Minor {
return true
}
if v.Rev < b.Rev {
return false
} else if v.Rev > b.Rev {
return true
}
if v.Beta < b.Beta {
return false
}
if v.RC < b.RC {
return false
}
return true
}
// IsDevel returns whether the GoVersion
// is a development version.
func (v *GoVersion) IsDevel() bool {
return v.Major < 0
}

119
vendor/github.com/derekparker/delve/pkg/proc/mach_exc.defs generated vendored Normal file
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/*
* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
*/
/*
* Abstract:
* MiG definitions file for Mach exception interface.
*/
subsystem
#if KERNEL_USER
KernelUser
#endif
mach_exc 2405;
#include <mach/std_types.defs>
#include <mach/mach_types.defs>
ServerPrefix catch_;
type mach_exception_data_t = array[*:2] of int64_t;
type exception_type_t = int;
routine mach_exception_raise(
#if KERNEL_USER
exception_port : mach_port_move_send_t;
thread : mach_port_move_send_t;
task : mach_port_move_send_t;
#else /* KERNEL_USER */
exception_port : mach_port_t;
thread : mach_port_t;
task : mach_port_t;
#endif /* KERNEL_USER */
exception : exception_type_t;
code : mach_exception_data_t
);
routine mach_exception_raise_state(
#if KERNEL_USER
exception_port : mach_port_move_send_t;
#else /* KERNEL_USER */
exception_port : mach_port_t;
#endif /* KERNEL_USER */
exception : exception_type_t;
code : mach_exception_data_t, const;
inout flavor : int;
old_state : thread_state_t, const;
out new_state : thread_state_t);
routine mach_exception_raise_state_identity(
#if KERNEL_USER
exception_port : mach_port_move_send_t;
thread : mach_port_move_send_t;
task : mach_port_move_send_t;
#else /* KERNEL_USER */
exception_port : mach_port_t;
thread : mach_port_t;
task : mach_port_t;
#endif /* KERNEL_USER */
exception : exception_type_t;
code : mach_exception_data_t;
inout flavor : int;
old_state : thread_state_t;
out new_state : thread_state_t);
/* vim: set ft=c : */

283
vendor/github.com/derekparker/delve/pkg/proc/mach_exc.h generated vendored Normal file
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#ifndef _mach_exc_user_
#define _mach_exc_user_
/* Module mach_exc */
#include <string.h>
#include <mach/ndr.h>
#include <mach/boolean.h>
#include <mach/kern_return.h>
#include <mach/notify.h>
#include <mach/mach_types.h>
#include <mach/message.h>
#include <mach/mig_errors.h>
#include <mach/port.h>
/* BEGIN VOUCHER CODE */
#ifndef KERNEL
#if defined(__has_include)
#if __has_include(<mach/mig_voucher_support.h>)
#ifndef USING_VOUCHERS
#define USING_VOUCHERS
#endif
#ifndef __VOUCHER_FORWARD_TYPE_DECLS__
#define __VOUCHER_FORWARD_TYPE_DECLS__
#ifdef __cplusplus
extern "C" {
#endif
extern boolean_t voucher_mach_msg_set(mach_msg_header_t *msg) __attribute__((weak_import));
#ifdef __cplusplus
}
#endif
#endif // __VOUCHER_FORWARD_TYPE_DECLS__
#endif // __has_include(<mach/mach_voucher_types.h>)
#endif // __has_include
#endif // !KERNEL
/* END VOUCHER CODE */
#ifdef AUTOTEST
#ifndef FUNCTION_PTR_T
#define FUNCTION_PTR_T
typedef void (*function_ptr_t)(mach_port_t, char *, mach_msg_type_number_t);
typedef struct {
char *name;
function_ptr_t function;
} function_table_entry;
typedef function_table_entry *function_table_t;
#endif /* FUNCTION_PTR_T */
#endif /* AUTOTEST */
#ifndef mach_exc_MSG_COUNT
#define mach_exc_MSG_COUNT 3
#endif /* mach_exc_MSG_COUNT */
#include <mach/std_types.h>
#include <mach/mig.h>
#include <mach/mig.h>
#include <mach/mach_types.h>
#ifdef __BeforeMigUserHeader
__BeforeMigUserHeader
#endif /* __BeforeMigUserHeader */
#include <sys/cdefs.h>
__BEGIN_DECLS
/* Routine mach_exception_raise */
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
kern_return_t mach_exception_raise
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
mach_exception_data_t code,
mach_msg_type_number_t codeCnt
);
/* Routine mach_exception_raise_state */
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
kern_return_t mach_exception_raise_state
(
mach_port_t exception_port,
exception_type_t exception,
const mach_exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
const thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
);
/* Routine mach_exception_raise_state_identity */
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
kern_return_t mach_exception_raise_state_identity
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
mach_exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
);
__END_DECLS
/********************** Caution **************************/
/* The following data types should be used to calculate */
/* maximum message sizes only. The actual message may be */
/* smaller, and the position of the arguments within the */
/* message layout may vary from what is presented here. */
/* For example, if any of the arguments are variable- */
/* sized, and less than the maximum is sent, the data */
/* will be packed tight in the actual message to reduce */
/* the presence of holes. */
/********************** Caution **************************/
/* typedefs for all requests */
#ifndef __Request__mach_exc_subsystem__defined
#define __Request__mach_exc_subsystem__defined
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
} __Request__mach_exception_raise_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} __Request__mach_exception_raise_state_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} __Request__mach_exception_raise_state_identity_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#endif /* !__Request__mach_exc_subsystem__defined */
/* union of all requests */
#ifndef __RequestUnion__mach_exc_subsystem__defined
#define __RequestUnion__mach_exc_subsystem__defined
union __RequestUnion__mach_exc_subsystem {
__Request__mach_exception_raise_t Request_mach_exception_raise;
__Request__mach_exception_raise_state_t Request_mach_exception_raise_state;
__Request__mach_exception_raise_state_identity_t Request_mach_exception_raise_state_identity;
};
#endif /* !__RequestUnion__mach_exc_subsystem__defined */
/* typedefs for all replies */
#ifndef __Reply__mach_exc_subsystem__defined
#define __Reply__mach_exc_subsystem__defined
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
} __Reply__mach_exception_raise_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply__mach_exception_raise_state_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply__mach_exception_raise_state_identity_t;
#ifdef __MigPackStructs
#pragma pack()
#endif
#endif /* !__Reply__mach_exc_subsystem__defined */
/* union of all replies */
#ifndef __ReplyUnion__mach_exc_subsystem__defined
#define __ReplyUnion__mach_exc_subsystem__defined
union __ReplyUnion__mach_exc_subsystem {
__Reply__mach_exception_raise_t Reply_mach_exception_raise;
__Reply__mach_exception_raise_state_t Reply_mach_exception_raise_state;
__Reply__mach_exception_raise_state_identity_t Reply_mach_exception_raise_state_identity;
};
#endif /* !__RequestUnion__mach_exc_subsystem__defined */
#ifndef subsystem_to_name_map_mach_exc
#define subsystem_to_name_map_mach_exc \
{ "mach_exception_raise", 2401 },\
{ "mach_exception_raise_state", 2402 },\
{ "mach_exception_raise_state_identity", 2403 }
#endif
#ifdef __AfterMigUserHeader
__AfterMigUserHeader
#endif /* __AfterMigUserHeader */
#endif /* _mach_exc_user_ */

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@ -0,0 +1,768 @@
/*
* IDENTIFICATION:
* stub generated Sat Feb 21 18:10:52 2015
* with a MiG generated by bootstrap_cmds-91
* OPTIONS:
*/
#define __MIG_check__Reply__mach_exc_subsystem__ 1
#include "mach_exc.h"
#ifndef mig_internal
#define mig_internal static __inline__
#endif /* mig_internal */
#ifndef mig_external
#define mig_external
#endif /* mig_external */
#if !defined(__MigTypeCheck) && defined(TypeCheck)
#define __MigTypeCheck TypeCheck /* Legacy setting */
#endif /* !defined(__MigTypeCheck) */
#if !defined(__MigKernelSpecificCode) && defined(_MIG_KERNEL_SPECIFIC_CODE_)
#define __MigKernelSpecificCode _MIG_KERNEL_SPECIFIC_CODE_ /* Legacy setting */
#endif /* !defined(__MigKernelSpecificCode) */
#ifndef LimitCheck
#define LimitCheck 0
#endif /* LimitCheck */
#ifndef min
#define min(a,b) ( ((a) < (b))? (a): (b) )
#endif /* min */
#if !defined(_WALIGN_)
#define _WALIGN_(x) (((x) + 3) & ~3)
#endif /* !defined(_WALIGN_) */
#if !defined(_WALIGNSZ_)
#define _WALIGNSZ_(x) _WALIGN_(sizeof(x))
#endif /* !defined(_WALIGNSZ_) */
#ifndef UseStaticTemplates
#define UseStaticTemplates 0
#endif /* UseStaticTemplates */
#ifndef __MachMsgErrorWithTimeout
#define __MachMsgErrorWithTimeout(_R_) { \
switch (_R_) { \
case MACH_SEND_INVALID_DATA: \
case MACH_SEND_INVALID_DEST: \
case MACH_SEND_INVALID_HEADER: \
mig_put_reply_port(InP->Head.msgh_reply_port); \
break; \
case MACH_SEND_TIMED_OUT: \
case MACH_RCV_TIMED_OUT: \
default: \
mig_dealloc_reply_port(InP->Head.msgh_reply_port); \
} \
}
#endif /* __MachMsgErrorWithTimeout */
#ifndef __MachMsgErrorWithoutTimeout
#define __MachMsgErrorWithoutTimeout(_R_) { \
switch (_R_) { \
case MACH_SEND_INVALID_DATA: \
case MACH_SEND_INVALID_DEST: \
case MACH_SEND_INVALID_HEADER: \
mig_put_reply_port(InP->Head.msgh_reply_port); \
break; \
default: \
mig_dealloc_reply_port(InP->Head.msgh_reply_port); \
} \
}
#endif /* __MachMsgErrorWithoutTimeout */
#ifndef __DeclareSendRpc
#define __DeclareSendRpc(_NUM_, _NAME_)
#endif /* __DeclareSendRpc */
#ifndef __BeforeSendRpc
#define __BeforeSendRpc(_NUM_, _NAME_)
#endif /* __BeforeSendRpc */
#ifndef __AfterSendRpc
#define __AfterSendRpc(_NUM_, _NAME_)
#endif /* __AfterSendRpc */
#ifndef __DeclareSendSimple
#define __DeclareSendSimple(_NUM_, _NAME_)
#endif /* __DeclareSendSimple */
#ifndef __BeforeSendSimple
#define __BeforeSendSimple(_NUM_, _NAME_)
#endif /* __BeforeSendSimple */
#ifndef __AfterSendSimple
#define __AfterSendSimple(_NUM_, _NAME_)
#endif /* __AfterSendSimple */
#define msgh_request_port msgh_remote_port
#define msgh_reply_port msgh_local_port
#if ( __MigTypeCheck )
#if __MIG_check__Reply__mach_exc_subsystem__
#if !defined(__MIG_check__Reply__mach_exception_raise_t__defined)
#define __MIG_check__Reply__mach_exception_raise_t__defined
mig_internal kern_return_t __MIG_check__Reply__mach_exception_raise_t(__Reply__mach_exception_raise_t *Out0P)
{
typedef __Reply__mach_exception_raise_t __Reply;
if (Out0P->Head.msgh_id != 2505) {
if (Out0P->Head.msgh_id == MACH_NOTIFY_SEND_ONCE)
{ return MIG_SERVER_DIED; }
else
{ return MIG_REPLY_MISMATCH; }
}
#if __MigTypeCheck
if ((Out0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) ||
(Out0P->Head.msgh_size != (mach_msg_size_t)sizeof(__Reply)))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
{
return Out0P->RetCode;
}
}
#endif /* !defined(__MIG_check__Reply__mach_exception_raise_t__defined) */
#endif /* __MIG_check__Reply__mach_exc_subsystem__ */
#endif /* ( __MigTypeCheck ) */
/* Routine mach_exception_raise */
mig_external kern_return_t mach_exception_raise
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
mach_exception_data_t code,
mach_msg_type_number_t codeCnt
)
{
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
} Request;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
mach_msg_trailer_t trailer;
} Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
} __Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
/*
* typedef struct {
* mach_msg_header_t Head;
* NDR_record_t NDR;
* kern_return_t RetCode;
* } mig_reply_error_t;
*/
union {
Request In;
Reply Out;
} Mess;
Request *InP = &Mess.In;
Reply *Out0P = &Mess.Out;
mach_msg_return_t msg_result;
unsigned int msgh_size;
#ifdef __MIG_check__Reply__mach_exception_raise_t__defined
kern_return_t check_result;
#endif /* __MIG_check__Reply__mach_exception_raise_t__defined */
__DeclareSendRpc(2405, "mach_exception_raise")
#if UseStaticTemplates
const static mach_msg_port_descriptor_t threadTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
#if UseStaticTemplates
const static mach_msg_port_descriptor_t taskTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
InP->msgh_body.msgh_descriptor_count = 2;
#if UseStaticTemplates
InP->thread = threadTemplate;
InP->thread.name = thread;
#else /* UseStaticTemplates */
InP->thread.name = thread;
InP->thread.disposition = 19;
InP->thread.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
#if UseStaticTemplates
InP->task = taskTemplate;
InP->task.name = task;
#else /* UseStaticTemplates */
InP->task.name = task;
InP->task.disposition = 19;
InP->task.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
InP->NDR = NDR_record;
InP->exception = exception;
if (codeCnt > 2) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->code, (const char *) code, 8 * codeCnt);
InP->codeCnt = codeCnt;
msgh_size = (mach_msg_size_t)(sizeof(Request) - 16) + ((8 * codeCnt));
InP->Head.msgh_bits = MACH_MSGH_BITS_COMPLEX|
MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
/* msgh_size passed as argument */
InP->Head.msgh_request_port = exception_port;
InP->Head.msgh_reply_port = mig_get_reply_port();
InP->Head.msgh_id = 2405;
/* BEGIN VOUCHER CODE */
#ifdef USING_VOUCHERS
if (voucher_mach_msg_set != NULL) {
voucher_mach_msg_set(&InP->Head);
}
#endif // USING_VOUCHERS
/* END VOUCHER CODE */
__BeforeSendRpc(2405, "mach_exception_raise")
msg_result = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_RCV_MSG|MACH_MSG_OPTION_NONE, msgh_size, (mach_msg_size_t)sizeof(Reply), InP->Head.msgh_reply_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
__AfterSendRpc(2405, "mach_exception_raise")
if (msg_result != MACH_MSG_SUCCESS) {
__MachMsgErrorWithoutTimeout(msg_result);
{ return msg_result; }
}
#if defined(__MIG_check__Reply__mach_exception_raise_t__defined)
check_result = __MIG_check__Reply__mach_exception_raise_t((__Reply__mach_exception_raise_t *)Out0P);
if (check_result != MACH_MSG_SUCCESS)
{ return check_result; }
#endif /* defined(__MIG_check__Reply__mach_exception_raise_t__defined) */
return KERN_SUCCESS;
}
#if ( __MigTypeCheck )
#if __MIG_check__Reply__mach_exc_subsystem__
#if !defined(__MIG_check__Reply__mach_exception_raise_state_t__defined)
#define __MIG_check__Reply__mach_exception_raise_state_t__defined
mig_internal kern_return_t __MIG_check__Reply__mach_exception_raise_state_t(__Reply__mach_exception_raise_state_t *Out0P)
{
typedef __Reply__mach_exception_raise_state_t __Reply;
#if __MigTypeCheck
unsigned int msgh_size;
#endif /* __MigTypeCheck */
if (Out0P->Head.msgh_id != 2506) {
if (Out0P->Head.msgh_id == MACH_NOTIFY_SEND_ONCE)
{ return MIG_SERVER_DIED; }
else
{ return MIG_REPLY_MISMATCH; }
}
#if __MigTypeCheck
msgh_size = Out0P->Head.msgh_size;
if ((Out0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) ||
((msgh_size > (mach_msg_size_t)sizeof(__Reply) || msgh_size < (mach_msg_size_t)(sizeof(__Reply) - 896)) &&
(msgh_size != (mach_msg_size_t)sizeof(mig_reply_error_t) ||
Out0P->RetCode == KERN_SUCCESS)))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
if (Out0P->RetCode != KERN_SUCCESS) {
return ((mig_reply_error_t *)Out0P)->RetCode;
}
#if __MigTypeCheck
if ( Out0P->new_stateCnt > 224 )
return MIG_TYPE_ERROR;
if (((msgh_size - (mach_msg_size_t)(sizeof(__Reply) - 896)) / 4< Out0P->new_stateCnt) ||
(msgh_size != (mach_msg_size_t)(sizeof(__Reply) - 896) + Out0P->new_stateCnt * 4))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
return MACH_MSG_SUCCESS;
}
#endif /* !defined(__MIG_check__Reply__mach_exception_raise_state_t__defined) */
#endif /* __MIG_check__Reply__mach_exc_subsystem__ */
#endif /* ( __MigTypeCheck ) */
/* Routine mach_exception_raise_state */
mig_external kern_return_t mach_exception_raise_state
(
mach_port_t exception_port,
exception_type_t exception,
const mach_exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
const thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
)
{
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} Request;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
mach_msg_trailer_t trailer;
} Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
/*
* typedef struct {
* mach_msg_header_t Head;
* NDR_record_t NDR;
* kern_return_t RetCode;
* } mig_reply_error_t;
*/
union {
Request In;
Reply Out;
} Mess;
Request *InP = &Mess.In;
Reply *Out0P = &Mess.Out;
mach_msg_return_t msg_result;
unsigned int msgh_size;
unsigned int msgh_size_delta;
#ifdef __MIG_check__Reply__mach_exception_raise_state_t__defined
kern_return_t check_result;
#endif /* __MIG_check__Reply__mach_exception_raise_state_t__defined */
__DeclareSendRpc(2406, "mach_exception_raise_state")
InP->NDR = NDR_record;
InP->exception = exception;
if (codeCnt > 2) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->code, (const char *) code, 8 * codeCnt);
InP->codeCnt = codeCnt;
msgh_size_delta = (8 * codeCnt);
msgh_size = (mach_msg_size_t)(sizeof(Request) - 912) + msgh_size_delta;
InP = (Request *) ((pointer_t) InP + msgh_size_delta - 16);
InP->flavor = *flavor;
if (old_stateCnt > 224) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->old_state, (const char *) old_state, 4 * old_stateCnt);
InP->old_stateCnt = old_stateCnt;
msgh_size += (4 * old_stateCnt);
InP = &Mess.In;
InP->Head.msgh_bits =
MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
/* msgh_size passed as argument */
InP->Head.msgh_request_port = exception_port;
InP->Head.msgh_reply_port = mig_get_reply_port();
InP->Head.msgh_id = 2406;
/* BEGIN VOUCHER CODE */
#ifdef USING_VOUCHERS
if (voucher_mach_msg_set != NULL) {
voucher_mach_msg_set(&InP->Head);
}
#endif // USING_VOUCHERS
/* END VOUCHER CODE */
__BeforeSendRpc(2406, "mach_exception_raise_state")
msg_result = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_RCV_MSG|MACH_MSG_OPTION_NONE, msgh_size, (mach_msg_size_t)sizeof(Reply), InP->Head.msgh_reply_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
__AfterSendRpc(2406, "mach_exception_raise_state")
if (msg_result != MACH_MSG_SUCCESS) {
__MachMsgErrorWithoutTimeout(msg_result);
{ return msg_result; }
}
#if defined(__MIG_check__Reply__mach_exception_raise_state_t__defined)
check_result = __MIG_check__Reply__mach_exception_raise_state_t((__Reply__mach_exception_raise_state_t *)Out0P);
if (check_result != MACH_MSG_SUCCESS)
{ return check_result; }
#endif /* defined(__MIG_check__Reply__mach_exception_raise_state_t__defined) */
*flavor = Out0P->flavor;
if (Out0P->new_stateCnt > 224) {
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * 224);
*new_stateCnt = Out0P->new_stateCnt;
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * Out0P->new_stateCnt);
*new_stateCnt = Out0P->new_stateCnt;
return KERN_SUCCESS;
}
#if ( __MigTypeCheck )
#if __MIG_check__Reply__mach_exc_subsystem__
#if !defined(__MIG_check__Reply__mach_exception_raise_state_identity_t__defined)
#define __MIG_check__Reply__mach_exception_raise_state_identity_t__defined
mig_internal kern_return_t __MIG_check__Reply__mach_exception_raise_state_identity_t(__Reply__mach_exception_raise_state_identity_t *Out0P)
{
typedef __Reply__mach_exception_raise_state_identity_t __Reply;
#if __MigTypeCheck
unsigned int msgh_size;
#endif /* __MigTypeCheck */
if (Out0P->Head.msgh_id != 2507) {
if (Out0P->Head.msgh_id == MACH_NOTIFY_SEND_ONCE)
{ return MIG_SERVER_DIED; }
else
{ return MIG_REPLY_MISMATCH; }
}
#if __MigTypeCheck
msgh_size = Out0P->Head.msgh_size;
if ((Out0P->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) ||
((msgh_size > (mach_msg_size_t)sizeof(__Reply) || msgh_size < (mach_msg_size_t)(sizeof(__Reply) - 896)) &&
(msgh_size != (mach_msg_size_t)sizeof(mig_reply_error_t) ||
Out0P->RetCode == KERN_SUCCESS)))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
if (Out0P->RetCode != KERN_SUCCESS) {
return ((mig_reply_error_t *)Out0P)->RetCode;
}
#if __MigTypeCheck
if ( Out0P->new_stateCnt > 224 )
return MIG_TYPE_ERROR;
if (((msgh_size - (mach_msg_size_t)(sizeof(__Reply) - 896)) / 4< Out0P->new_stateCnt) ||
(msgh_size != (mach_msg_size_t)(sizeof(__Reply) - 896) + Out0P->new_stateCnt * 4))
{ return MIG_TYPE_ERROR ; }
#endif /* __MigTypeCheck */
return MACH_MSG_SUCCESS;
}
#endif /* !defined(__MIG_check__Reply__mach_exception_raise_state_identity_t__defined) */
#endif /* __MIG_check__Reply__mach_exc_subsystem__ */
#endif /* ( __MigTypeCheck ) */
/* Routine mach_exception_raise_state_identity */
mig_external kern_return_t mach_exception_raise_state_identity
(
mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
mach_exception_data_t code,
mach_msg_type_number_t codeCnt,
int *flavor,
thread_state_t old_state,
mach_msg_type_number_t old_stateCnt,
thread_state_t new_state,
mach_msg_type_number_t *new_stateCnt
)
{
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
/* start of the kernel processed data */
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
mach_msg_port_descriptor_t task;
/* end of the kernel processed data */
NDR_record_t NDR;
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[224];
} Request;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
mach_msg_trailer_t trailer;
} Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
#ifdef __MigPackStructs
#pragma pack(4)
#endif
typedef struct {
mach_msg_header_t Head;
NDR_record_t NDR;
kern_return_t RetCode;
int flavor;
mach_msg_type_number_t new_stateCnt;
natural_t new_state[224];
} __Reply;
#ifdef __MigPackStructs
#pragma pack()
#endif
/*
* typedef struct {
* mach_msg_header_t Head;
* NDR_record_t NDR;
* kern_return_t RetCode;
* } mig_reply_error_t;
*/
union {
Request In;
Reply Out;
} Mess;
Request *InP = &Mess.In;
Reply *Out0P = &Mess.Out;
mach_msg_return_t msg_result;
unsigned int msgh_size;
unsigned int msgh_size_delta;
#ifdef __MIG_check__Reply__mach_exception_raise_state_identity_t__defined
kern_return_t check_result;
#endif /* __MIG_check__Reply__mach_exception_raise_state_identity_t__defined */
__DeclareSendRpc(2407, "mach_exception_raise_state_identity")
#if UseStaticTemplates
const static mach_msg_port_descriptor_t threadTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
#if UseStaticTemplates
const static mach_msg_port_descriptor_t taskTemplate = {
/* name = */ MACH_PORT_NULL,
/* pad1 = */ 0,
/* pad2 = */ 0,
/* disp = */ 19,
/* type = */ MACH_MSG_PORT_DESCRIPTOR,
};
#endif /* UseStaticTemplates */
InP->msgh_body.msgh_descriptor_count = 2;
#if UseStaticTemplates
InP->thread = threadTemplate;
InP->thread.name = thread;
#else /* UseStaticTemplates */
InP->thread.name = thread;
InP->thread.disposition = 19;
InP->thread.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
#if UseStaticTemplates
InP->task = taskTemplate;
InP->task.name = task;
#else /* UseStaticTemplates */
InP->task.name = task;
InP->task.disposition = 19;
InP->task.type = MACH_MSG_PORT_DESCRIPTOR;
#endif /* UseStaticTemplates */
InP->NDR = NDR_record;
InP->exception = exception;
if (codeCnt > 2) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->code, (const char *) code, 8 * codeCnt);
InP->codeCnt = codeCnt;
msgh_size_delta = (8 * codeCnt);
msgh_size = (mach_msg_size_t)(sizeof(Request) - 912) + msgh_size_delta;
InP = (Request *) ((pointer_t) InP + msgh_size_delta - 16);
InP->flavor = *flavor;
if (old_stateCnt > 224) {
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) InP->old_state, (const char *) old_state, 4 * old_stateCnt);
InP->old_stateCnt = old_stateCnt;
msgh_size += (4 * old_stateCnt);
InP = &Mess.In;
InP->Head.msgh_bits = MACH_MSGH_BITS_COMPLEX|
MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
/* msgh_size passed as argument */
InP->Head.msgh_request_port = exception_port;
InP->Head.msgh_reply_port = mig_get_reply_port();
InP->Head.msgh_id = 2407;
/* BEGIN VOUCHER CODE */
#ifdef USING_VOUCHERS
if (voucher_mach_msg_set != NULL) {
voucher_mach_msg_set(&InP->Head);
}
#endif // USING_VOUCHERS
/* END VOUCHER CODE */
__BeforeSendRpc(2407, "mach_exception_raise_state_identity")
msg_result = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_RCV_MSG|MACH_MSG_OPTION_NONE, msgh_size, (mach_msg_size_t)sizeof(Reply), InP->Head.msgh_reply_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
__AfterSendRpc(2407, "mach_exception_raise_state_identity")
if (msg_result != MACH_MSG_SUCCESS) {
__MachMsgErrorWithoutTimeout(msg_result);
{ return msg_result; }
}
#if defined(__MIG_check__Reply__mach_exception_raise_state_identity_t__defined)
check_result = __MIG_check__Reply__mach_exception_raise_state_identity_t((__Reply__mach_exception_raise_state_identity_t *)Out0P);
if (check_result != MACH_MSG_SUCCESS)
{ return check_result; }
#endif /* defined(__MIG_check__Reply__mach_exception_raise_state_identity_t__defined) */
*flavor = Out0P->flavor;
if (Out0P->new_stateCnt > 224) {
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * 224);
*new_stateCnt = Out0P->new_stateCnt;
{ return MIG_ARRAY_TOO_LARGE; }
}
(void)memcpy((char *) new_state, (const char *) Out0P->new_state, 4 * Out0P->new_stateCnt);
*new_stateCnt = Out0P->new_stateCnt;
return KERN_SUCCESS;
}

57
vendor/github.com/derekparker/delve/pkg/proc/mem.go generated vendored Normal file
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@ -0,0 +1,57 @@
package proc
const cacheEnabled = true
type memoryReadWriter interface {
readMemory(addr uintptr, size int) (data []byte, err error)
writeMemory(addr uintptr, data []byte) (written int, err error)
}
type memCache struct {
cacheAddr uintptr
cache []byte
mem memoryReadWriter
}
func (m *memCache) contains(addr uintptr, size int) bool {
return addr >= m.cacheAddr && addr <= (m.cacheAddr+uintptr(len(m.cache)-size))
}
func (m *memCache) readMemory(addr uintptr, size int) (data []byte, err error) {
if m.contains(addr, size) {
d := make([]byte, size)
copy(d, m.cache[addr-m.cacheAddr:])
return d, nil
}
return m.mem.readMemory(addr, size)
}
func (m *memCache) writeMemory(addr uintptr, data []byte) (written int, err error) {
return m.mem.writeMemory(addr, data)
}
func cacheMemory(mem memoryReadWriter, addr uintptr, size int) memoryReadWriter {
if !cacheEnabled {
return mem
}
if size <= 0 {
return mem
}
if cacheMem, isCache := mem.(*memCache); isCache {
if cacheMem.contains(addr, size) {
return mem
} else {
cache, err := cacheMem.mem.readMemory(addr, size)
if err != nil {
return mem
}
return &memCache{addr, cache, mem}
}
}
cache, err := mem.readMemory(addr, size)
if err != nil {
return mem
}
return &memCache{addr, cache, mem}
}

189
vendor/github.com/derekparker/delve/pkg/proc/moduledata.go generated vendored Normal file
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package proc
import (
"go/constant"
"unsafe"
)
// delve counterpart to runtime.moduledata
type moduleData struct {
types, etypes uintptr
typemapVar *Variable
}
func (dbp *Process) loadModuleData() (err error) {
dbp.loadModuleDataOnce.Do(func() {
scope := &EvalScope{Thread: dbp.currentThread, PC: 0, CFA: 0}
var md *Variable
md, err = scope.packageVarAddr("runtime.firstmoduledata")
if err != nil {
return
}
for md.Addr != 0 {
var typesVar, etypesVar, nextVar, typemapVar *Variable
var types, etypes uint64
if typesVar, err = md.structMember("types"); err != nil {
return
}
if etypesVar, err = md.structMember("etypes"); err != nil {
return
}
if nextVar, err = md.structMember("next"); err != nil {
return
}
if typemapVar, err = md.structMember("typemap"); err != nil {
return
}
if types, err = typesVar.asUint(); err != nil {
return
}
if etypes, err = etypesVar.asUint(); err != nil {
return
}
dbp.moduleData = append(dbp.moduleData, moduleData{uintptr(types), uintptr(etypes), typemapVar})
md = nextVar.maybeDereference()
if md.Unreadable != nil {
err = md.Unreadable
return
}
}
})
return
}
func (dbp *Process) resolveTypeOff(typeAddr uintptr, off uintptr) (*Variable, error) {
// See runtime.(*_type).typeOff in $GOROOT/src/runtime/type.go
if err := dbp.loadModuleData(); err != nil {
return nil, err
}
var md *moduleData
for i := range dbp.moduleData {
if typeAddr >= dbp.moduleData[i].types && typeAddr < dbp.moduleData[i].etypes {
md = &dbp.moduleData[i]
}
}
rtyp, err := dbp.findType("runtime._type")
if err != nil {
return nil, err
}
if md == nil {
v, err := dbp.reflectOffsMapAccess(off)
if err != nil {
return nil, err
}
v.loadValue(LoadConfig{false, 1, 0, 0, -1})
addr, _ := constant.Int64Val(v.Value)
return v.newVariable(v.Name, uintptr(addr), rtyp), nil
}
if t, _ := md.typemapVar.mapAccess(newConstant(constant.MakeUint64(uint64(off)), dbp.currentThread)); t != nil {
return t, nil
}
res := md.types + uintptr(off)
return dbp.currentThread.newVariable("", res, rtyp), nil
}
func (dbp *Process) resolveNameOff(typeAddr uintptr, off uintptr) (name, tag string, pkgpathoff int32, err error) {
// See runtime.resolveNameOff in $GOROOT/src/runtime/type.go
if err = dbp.loadModuleData(); err != nil {
return "", "", 0, err
}
for _, md := range dbp.moduleData {
if typeAddr >= md.types && typeAddr < md.etypes {
return dbp.loadName(md.types + off)
}
}
v, err := dbp.reflectOffsMapAccess(off)
if err != nil {
return "", "", 0, err
}
resv := v.maybeDereference()
if resv.Unreadable != nil {
return "", "", 0, resv.Unreadable
}
return dbp.loadName(resv.Addr)
}
func (dbp *Process) reflectOffsMapAccess(off uintptr) (*Variable, error) {
scope := &EvalScope{Thread: dbp.currentThread, PC: 0, CFA: 0}
reflectOffs, err := scope.packageVarAddr("runtime.reflectOffs")
if err != nil {
return nil, err
}
reflectOffsm, err := reflectOffs.structMember("m")
if err != nil {
return nil, err
}
return reflectOffsm.mapAccess(newConstant(constant.MakeUint64(uint64(off)), dbp.currentThread))
}
const (
// flags for the name struct (see 'type name struct' in $GOROOT/src/reflect/type.go)
nameflagExported = 1 << 0
nameflagHasTag = 1 << 1
nameflagHasPkg = 1 << 2
)
func (dbp *Process) loadName(addr uintptr) (name, tag string, pkgpathoff int32, err error) {
off := addr
namedata, err := dbp.currentThread.readMemory(off, 3)
off += 3
if err != nil {
return "", "", 0, err
}
namelen := uint16(namedata[1]<<8) | uint16(namedata[2])
rawstr, err := dbp.currentThread.readMemory(off, int(namelen))
off += uintptr(namelen)
if err != nil {
return "", "", 0, err
}
name = string(rawstr)
if namedata[0]&nameflagHasTag != 0 {
taglendata, err := dbp.currentThread.readMemory(off, 2)
off += 2
if err != nil {
return "", "", 0, err
}
taglen := uint16(taglendata[0]<<8) | uint16(taglendata[1])
rawstr, err := dbp.currentThread.readMemory(off, int(taglen))
off += uintptr(taglen)
if err != nil {
return "", "", 0, err
}
tag = string(rawstr)
}
if namedata[0]&nameflagHasPkg != 0 {
pkgdata, err := dbp.currentThread.readMemory(off, 4)
if err != nil {
return "", "", 0, err
}
// see func pkgPath in $GOROOT/src/reflect/type.go
copy((*[4]byte)(unsafe.Pointer(&pkgpathoff))[:], pkgdata)
}
return name, tag, pkgpathoff, nil
}

986
vendor/github.com/derekparker/delve/pkg/proc/proc.go generated vendored Normal file
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@ -0,0 +1,986 @@
package proc
import (
"debug/gosym"
"encoding/binary"
"errors"
"fmt"
"go/ast"
"go/constant"
"go/token"
"os"
"path/filepath"
"runtime"
"strconv"
"strings"
"sync"
"time"
"github.com/derekparker/delve/pkg/dwarf/frame"
"github.com/derekparker/delve/pkg/dwarf/line"
"github.com/derekparker/delve/pkg/dwarf/reader"
"golang.org/x/debug/dwarf"
)
// Process represents all of the information the debugger
// is holding onto regarding the process we are debugging.
type Process struct {
pid int // Process Pid
Process *os.Process // Pointer to process struct for the actual process we are debugging
lastModified time.Time // Time the executable of this process was last modified
// Breakpoint table, holds information on breakpoints.
// Maps instruction address to Breakpoint struct.
breakpoints map[uint64]*Breakpoint
// List of threads mapped as such: pid -> *Thread
threads map[int]*Thread
// Active thread
currentThread *Thread
// Goroutine that will be used by default to set breakpoint, eval variables, etc...
// Normally selectedGoroutine is currentThread.GetG, it will not be only if SwitchGoroutine is called with a goroutine that isn't attached to a thread
selectedGoroutine *G
// Maps package names to package paths, needed to lookup types inside DWARF info
packageMap map[string]string
allGCache []*G
dwarf *dwarf.Data
goSymTable *gosym.Table
frameEntries frame.FrameDescriptionEntries
lineInfo line.DebugLines
os *OSProcessDetails
arch Arch
breakpointIDCounter int
internalBreakpointIDCounter int
firstStart bool
halt bool
exited bool
ptraceChan chan func()
ptraceDoneChan chan interface{}
types map[string]dwarf.Offset
functions []functionDebugInfo
loadModuleDataOnce sync.Once
moduleData []moduleData
nameOfRuntimeType map[uintptr]nameOfRuntimeTypeEntry
}
type functionDebugInfo struct {
lowpc, highpc uint64
offset dwarf.Offset
}
var NotExecutableErr = errors.New("not an executable file")
// New returns an initialized Process struct. Before returning,
// it will also launch a goroutine in order to handle ptrace(2)
// functions. For more information, see the documentation on
// `handlePtraceFuncs`.
func New(pid int) *Process {
dbp := &Process{
pid: pid,
threads: make(map[int]*Thread),
breakpoints: make(map[uint64]*Breakpoint),
firstStart: true,
os: new(OSProcessDetails),
ptraceChan: make(chan func()),
ptraceDoneChan: make(chan interface{}),
nameOfRuntimeType: make(map[uintptr]nameOfRuntimeTypeEntry),
}
// TODO: find better way to determine proc arch (perhaps use executable file info)
switch runtime.GOARCH {
case "amd64":
dbp.arch = AMD64Arch()
}
go dbp.handlePtraceFuncs()
return dbp
}
// ProcessExitedError indicates that the process has exited and contains both
// process id and exit status.
type ProcessExitedError struct {
Pid int
Status int
}
func (pe ProcessExitedError) Error() string {
return fmt.Sprintf("Process %d has exited with status %d", pe.Pid, pe.Status)
}
// Detach from the process being debugged, optionally killing it.
func (dbp *Process) Detach(kill bool) (err error) {
if dbp.exited {
return nil
}
if dbp.Running() {
if err = dbp.Halt(); err != nil {
return
}
}
if !kill {
// Clean up any breakpoints we've set.
for _, bp := range dbp.breakpoints {
if bp != nil {
_, err := dbp.ClearBreakpoint(bp.Addr)
if err != nil {
return err
}
}
}
}
dbp.execPtraceFunc(func() {
err = PtraceDetach(dbp.pid, 0)
if err != nil {
return
}
if kill {
err = killProcess(dbp.pid)
}
})
return
}
// Exited returns whether the debugged
// process has exited.
func (dbp *Process) Exited() bool {
return dbp.exited
}
// Running returns whether the debugged
// process is currently executing.
func (dbp *Process) Running() bool {
for _, th := range dbp.threads {
if th.running {
return true
}
}
return false
}
func (dbp *Process) LastModified() time.Time {
return dbp.lastModified
}
func (dbp *Process) Pid() int {
return dbp.pid
}
func (dbp *Process) SelectedGoroutine() *G {
return dbp.selectedGoroutine
}
func (dbp *Process) Threads() map[int]*Thread {
return dbp.threads
}
func (dbp *Process) CurrentThread() *Thread {
return dbp.currentThread
}
func (dbp *Process) Breakpoints() map[uint64]*Breakpoint {
return dbp.breakpoints
}
// LoadInformation finds the executable and then uses it
// to parse the following information:
// * Dwarf .debug_frame section
// * Dwarf .debug_line section
// * Go symbol table.
func (dbp *Process) LoadInformation(path string) error {
var wg sync.WaitGroup
exe, path, err := dbp.findExecutable(path)
if err != nil {
return err
}
fi, err := os.Stat(path)
if err == nil {
dbp.lastModified = fi.ModTime()
}
wg.Add(5)
go dbp.loadProcessInformation(&wg)
go dbp.parseDebugFrame(exe, &wg)
go dbp.obtainGoSymbols(exe, &wg)
go dbp.parseDebugLineInfo(exe, &wg)
go dbp.loadDebugInfoMaps(&wg)
wg.Wait()
return nil
}
// FindFileLocation returns the PC for a given file:line.
// Assumes that `file` is normailzed to lower case and '/' on Windows.
func (dbp *Process) FindFileLocation(fileName string, lineno int) (uint64, error) {
pc, fn, err := dbp.goSymTable.LineToPC(fileName, lineno)
if err != nil {
return 0, err
}
if fn.Entry == pc {
pc, _ = dbp.FirstPCAfterPrologue(fn, true)
}
return pc, nil
}
// FindFunctionLocation finds address of a function's line
// If firstLine == true is passed FindFunctionLocation will attempt to find the first line of the function
// If lineOffset is passed FindFunctionLocation will return the address of that line
// Pass lineOffset == 0 and firstLine == false if you want the address for the function's entry point
// Note that setting breakpoints at that address will cause surprising behavior:
// https://github.com/derekparker/delve/issues/170
func (dbp *Process) FindFunctionLocation(funcName string, firstLine bool, lineOffset int) (uint64, error) {
origfn := dbp.goSymTable.LookupFunc(funcName)
if origfn == nil {
return 0, fmt.Errorf("Could not find function %s\n", funcName)
}
if firstLine {
return dbp.FirstPCAfterPrologue(origfn, false)
} else if lineOffset > 0 {
filename, lineno, _ := dbp.goSymTable.PCToLine(origfn.Entry)
breakAddr, _, err := dbp.goSymTable.LineToPC(filename, lineno+lineOffset)
return breakAddr, err
}
return origfn.Entry, nil
}
// CurrentLocation returns the location of the current thread.
func (dbp *Process) CurrentLocation() (*Location, error) {
return dbp.currentThread.Location()
}
// RequestManualStop sets the `halt` flag and
// sends SIGSTOP to all threads.
func (dbp *Process) RequestManualStop() error {
if dbp.exited {
return &ProcessExitedError{}
}
dbp.halt = true
return dbp.requestManualStop()
}
// SetBreakpoint sets a breakpoint at addr, and stores it in the process wide
// break point table. Setting a break point must be thread specific due to
// ptrace actions needing the thread to be in a signal-delivery-stop.
func (dbp *Process) SetBreakpoint(addr uint64, kind BreakpointKind, cond ast.Expr) (*Breakpoint, error) {
tid := dbp.currentThread.ID
if bp, ok := dbp.FindBreakpoint(addr); ok {
return nil, BreakpointExistsError{bp.File, bp.Line, bp.Addr}
}
f, l, fn := dbp.goSymTable.PCToLine(uint64(addr))
if fn == nil {
return nil, InvalidAddressError{address: addr}
}
newBreakpoint := &Breakpoint{
FunctionName: fn.Name,
File: f,
Line: l,
Addr: addr,
Kind: kind,
Cond: cond,
HitCount: map[int]uint64{},
}
if kind != UserBreakpoint {
dbp.internalBreakpointIDCounter++
newBreakpoint.ID = dbp.internalBreakpointIDCounter
} else {
dbp.breakpointIDCounter++
newBreakpoint.ID = dbp.breakpointIDCounter
}
thread := dbp.threads[tid]
originalData, err := thread.readMemory(uintptr(addr), dbp.arch.BreakpointSize())
if err != nil {
return nil, err
}
if err := dbp.writeSoftwareBreakpoint(thread, addr); err != nil {
return nil, err
}
newBreakpoint.OriginalData = originalData
dbp.breakpoints[addr] = newBreakpoint
return newBreakpoint, nil
}
// ClearBreakpoint clears the breakpoint at addr.
func (dbp *Process) ClearBreakpoint(addr uint64) (*Breakpoint, error) {
if dbp.exited {
return nil, &ProcessExitedError{}
}
bp, ok := dbp.FindBreakpoint(addr)
if !ok {
return nil, NoBreakpointError{addr: addr}
}
if _, err := bp.Clear(dbp.currentThread); err != nil {
return nil, err
}
delete(dbp.breakpoints, addr)
return bp, nil
}
// Status returns the status of the current main thread context.
func (dbp *Process) Status() *WaitStatus {
return dbp.currentThread.Status
}
// Next continues execution until the next source line.
func (dbp *Process) Next() (err error) {
if dbp.exited {
return &ProcessExitedError{}
}
for i := range dbp.breakpoints {
if dbp.breakpoints[i].Internal() {
return fmt.Errorf("next while nexting")
}
}
if err = dbp.next(false); err != nil {
switch err.(type) {
case ThreadBlockedError, NoReturnAddr: // Noop
default:
dbp.ClearInternalBreakpoints()
return
}
}
return dbp.Continue()
}
// Continue continues execution of the debugged
// process. It will continue until it hits a breakpoint
// or is otherwise stopped.
func (dbp *Process) Continue() error {
if dbp.exited {
return &ProcessExitedError{}
}
for {
if err := dbp.resume(); err != nil {
return err
}
dbp.allGCache = nil
for _, th := range dbp.threads {
th.clearBreakpointState()
}
trapthread, err := dbp.trapWait(-1)
if err != nil {
return err
}
if err := dbp.Halt(); err != nil {
return dbp.exitGuard(err)
}
if err := dbp.setCurrentBreakpoints(trapthread); err != nil {
return err
}
if err := dbp.pickCurrentThread(trapthread); err != nil {
return err
}
switch {
case dbp.currentThread.CurrentBreakpoint == nil:
// runtime.Breakpoint or manual stop
if dbp.currentThread.onRuntimeBreakpoint() {
// Single-step current thread until we exit runtime.breakpoint and
// runtime.Breakpoint.
// On go < 1.8 it was sufficient to single-step twice on go1.8 a change
// to the compiler requires 4 steps.
for {
if err = dbp.currentThread.StepInstruction(); err != nil {
return err
}
loc, err := dbp.currentThread.Location()
if err != nil || loc.Fn == nil || (loc.Fn.Name != "runtime.breakpoint" && loc.Fn.Name != "runtime.Breakpoint") {
break
}
}
}
return dbp.conditionErrors()
case dbp.currentThread.onTriggeredInternalBreakpoint():
if dbp.currentThread.CurrentBreakpoint.Kind == StepBreakpoint {
// See description of proc.(*Process).next for the meaning of StepBreakpoints
if err := dbp.conditionErrors(); err != nil {
return err
}
pc, err := dbp.currentThread.PC()
if err != nil {
return err
}
text, err := dbp.currentThread.Disassemble(pc, pc+maxInstructionLength, true)
if err != nil {
return err
}
// here we either set a breakpoint into the destination of the CALL
// instruction or we determined that the called function is hidden,
// either way we need to resume execution
if err = dbp.setStepIntoBreakpoint(text, sameGoroutineCondition(dbp.selectedGoroutine)); err != nil {
return err
}
} else {
if err := dbp.ClearInternalBreakpoints(); err != nil {
return err
}
return dbp.conditionErrors()
}
case dbp.currentThread.onTriggeredBreakpoint():
onNextGoroutine, err := dbp.currentThread.onNextGoroutine()
if err != nil {
return err
}
if onNextGoroutine {
err := dbp.ClearInternalBreakpoints()
if err != nil {
return err
}
}
return dbp.conditionErrors()
default:
// not a manual stop, not on runtime.Breakpoint, not on a breakpoint, just repeat
}
}
}
func (dbp *Process) conditionErrors() error {
var condErr error
for _, th := range dbp.threads {
if th.CurrentBreakpoint != nil && th.BreakpointConditionError != nil {
if condErr == nil {
condErr = th.BreakpointConditionError
} else {
return fmt.Errorf("multiple errors evaluating conditions")
}
}
}
return condErr
}
// pick a new dbp.currentThread, with the following priority:
// - a thread with onTriggeredInternalBreakpoint() == true
// - a thread with onTriggeredBreakpoint() == true (prioritizing trapthread)
// - trapthread
func (dbp *Process) pickCurrentThread(trapthread *Thread) error {
for _, th := range dbp.threads {
if th.onTriggeredInternalBreakpoint() {
return dbp.SwitchThread(th.ID)
}
}
if trapthread.onTriggeredBreakpoint() {
return dbp.SwitchThread(trapthread.ID)
}
for _, th := range dbp.threads {
if th.onTriggeredBreakpoint() {
return dbp.SwitchThread(th.ID)
}
}
return dbp.SwitchThread(trapthread.ID)
}
// Step will continue until another source line is reached.
// Will step into functions.
func (dbp *Process) Step() (err error) {
if dbp.exited {
return &ProcessExitedError{}
}
for i := range dbp.breakpoints {
if dbp.breakpoints[i].Internal() {
return fmt.Errorf("next while nexting")
}
}
if err = dbp.next(true); err != nil {
switch err.(type) {
case ThreadBlockedError, NoReturnAddr: // Noop
default:
dbp.ClearInternalBreakpoints()
return
}
}
return dbp.Continue()
}
// Returns an expression that evaluates to true when the current goroutine is g
func sameGoroutineCondition(g *G) ast.Expr {
if g == nil {
return nil
}
return &ast.BinaryExpr{
Op: token.EQL,
X: &ast.SelectorExpr{
X: &ast.SelectorExpr{
X: &ast.Ident{Name: "runtime"},
Sel: &ast.Ident{Name: "curg"},
},
Sel: &ast.Ident{Name: "goid"},
},
Y: &ast.BasicLit{Kind: token.INT, Value: strconv.Itoa(g.ID)},
}
}
// StepInstruction will continue the current thread for exactly
// one instruction. This method affects only the thread
// asssociated with the selected goroutine. All other
// threads will remain stopped.
func (dbp *Process) StepInstruction() (err error) {
if dbp.selectedGoroutine == nil {
return errors.New("cannot single step: no selected goroutine")
}
if dbp.selectedGoroutine.thread == nil {
// Step called on parked goroutine
if _, err := dbp.SetBreakpoint(dbp.selectedGoroutine.PC, NextBreakpoint, sameGoroutineCondition(dbp.selectedGoroutine)); err != nil {
return err
}
return dbp.Continue()
}
dbp.allGCache = nil
if dbp.exited {
return &ProcessExitedError{}
}
dbp.selectedGoroutine.thread.clearBreakpointState()
err = dbp.selectedGoroutine.thread.StepInstruction()
if err != nil {
return err
}
return dbp.selectedGoroutine.thread.SetCurrentBreakpoint()
}
// StepOut will continue until the current goroutine exits the
// function currently being executed or a deferred function is executed
func (dbp *Process) StepOut() error {
cond := sameGoroutineCondition(dbp.selectedGoroutine)
topframe, err := topframe(dbp.selectedGoroutine, dbp.currentThread)
if err != nil {
return err
}
pcs := []uint64{}
var deferpc uint64 = 0
if filepath.Ext(topframe.Current.File) == ".go" {
if dbp.selectedGoroutine != nil {
deferPCEntry := dbp.selectedGoroutine.DeferPC()
if deferPCEntry != 0 {
_, _, deferfn := dbp.goSymTable.PCToLine(deferPCEntry)
deferpc, err = dbp.FirstPCAfterPrologue(deferfn, false)
if err != nil {
return err
}
pcs = append(pcs, deferpc)
}
}
}
if topframe.Ret == 0 && deferpc == 0 {
return errors.New("nothing to stepout to")
}
if deferpc != 0 && deferpc != topframe.Current.PC {
bp, err := dbp.SetBreakpoint(deferpc, NextDeferBreakpoint, cond)
if err != nil {
if _, ok := err.(BreakpointExistsError); !ok {
dbp.ClearInternalBreakpoints()
return err
}
}
if bp != nil {
// For StepOut we do not want to step into the deferred function
// when it's called by runtime.deferreturn so we do not populate
// DeferReturns.
bp.DeferReturns = []uint64{}
}
}
if topframe.Ret != 0 {
if err := dbp.setInternalBreakpoints(topframe.Current.PC, []uint64{topframe.Ret}, NextBreakpoint, cond); err != nil {
return err
}
}
return dbp.Continue()
}
// SwitchThread changes from current thread to the thread specified by `tid`.
func (dbp *Process) SwitchThread(tid int) error {
if dbp.exited {
return &ProcessExitedError{}
}
if th, ok := dbp.threads[tid]; ok {
dbp.currentThread = th
dbp.selectedGoroutine, _ = dbp.currentThread.GetG()
return nil
}
return fmt.Errorf("thread %d does not exist", tid)
}
// SwitchGoroutine changes from current thread to the thread
// running the specified goroutine.
func (dbp *Process) SwitchGoroutine(gid int) error {
if dbp.exited {
return &ProcessExitedError{}
}
g, err := dbp.FindGoroutine(gid)
if err != nil {
return err
}
if g == nil {
// user specified -1 and selectedGoroutine is nil
return nil
}
if g.thread != nil {
return dbp.SwitchThread(g.thread.ID)
}
dbp.selectedGoroutine = g
return nil
}
// GoroutinesInfo returns an array of G structures representing the information
// Delve cares about from the internal runtime G structure.
func (dbp *Process) GoroutinesInfo() ([]*G, error) {
if dbp.exited {
return nil, &ProcessExitedError{}
}
if dbp.allGCache != nil {
return dbp.allGCache, nil
}
var (
threadg = map[int]*Thread{}
allg []*G
rdr = dbp.DwarfReader()
)
for i := range dbp.threads {
if dbp.threads[i].blocked() {
continue
}
g, _ := dbp.threads[i].GetG()
if g != nil {
threadg[g.ID] = dbp.threads[i]
}
}
addr, err := rdr.AddrFor("runtime.allglen")
if err != nil {
return nil, err
}
allglenBytes, err := dbp.currentThread.readMemory(uintptr(addr), 8)
if err != nil {
return nil, err
}
allglen := binary.LittleEndian.Uint64(allglenBytes)
rdr.Seek(0)
allgentryaddr, err := rdr.AddrFor("runtime.allgs")
if err != nil {
// try old name (pre Go 1.6)
allgentryaddr, err = rdr.AddrFor("runtime.allg")
if err != nil {
return nil, err
}
}
faddr, err := dbp.currentThread.readMemory(uintptr(allgentryaddr), dbp.arch.PtrSize())
allgptr := binary.LittleEndian.Uint64(faddr)
for i := uint64(0); i < allglen; i++ {
gvar, err := dbp.currentThread.newGVariable(uintptr(allgptr+(i*uint64(dbp.arch.PtrSize()))), true)
if err != nil {
return nil, err
}
g, err := gvar.parseG()
if err != nil {
return nil, err
}
if thread, allocated := threadg[g.ID]; allocated {
loc, err := thread.Location()
if err != nil {
return nil, err
}
g.thread = thread
// Prefer actual thread location information.
g.CurrentLoc = *loc
}
if g.Status != Gdead {
allg = append(allg, g)
}
}
dbp.allGCache = allg
return allg, nil
}
func (g *G) Thread() *Thread {
return g.thread
}
// Halt stops all threads.
func (dbp *Process) Halt() (err error) {
if dbp.exited {
return &ProcessExitedError{}
}
for _, th := range dbp.threads {
if err := th.Halt(); err != nil {
return err
}
}
return nil
}
// Registers obtains register values from the
// "current" thread of the traced process.
func (dbp *Process) Registers() (Registers, error) {
return dbp.currentThread.Registers(false)
}
// PC returns the PC of the current thread.
func (dbp *Process) PC() (uint64, error) {
return dbp.currentThread.PC()
}
// CurrentBreakpoint returns the breakpoint the current thread
// is stopped at.
func (dbp *Process) CurrentBreakpoint() *Breakpoint {
return dbp.currentThread.CurrentBreakpoint
}
// DwarfReader returns a reader for the dwarf data
func (dbp *Process) DwarfReader() *reader.Reader {
return reader.New(dbp.dwarf)
}
// Sources returns list of source files that comprise the debugged binary.
func (dbp *Process) Sources() map[string]*gosym.Obj {
return dbp.goSymTable.Files
}
// Funcs returns list of functions present in the debugged program.
func (dbp *Process) Funcs() []gosym.Func {
return dbp.goSymTable.Funcs
}
// Types returns list of types present in the debugged program.
func (dbp *Process) Types() ([]string, error) {
types := make([]string, 0, len(dbp.types))
for k := range dbp.types {
types = append(types, k)
}
return types, nil
}
// PCToLine converts an instruction address to a file/line/function.
func (dbp *Process) PCToLine(pc uint64) (string, int, *gosym.Func) {
return dbp.goSymTable.PCToLine(pc)
}
// FindBreakpointByID finds the breakpoint for the given ID.
func (dbp *Process) FindBreakpointByID(id int) (*Breakpoint, bool) {
for _, bp := range dbp.breakpoints {
if bp.ID == id {
return bp, true
}
}
return nil, false
}
// FindBreakpoint finds the breakpoint for the given pc.
func (dbp *Process) FindBreakpoint(pc uint64) (*Breakpoint, bool) {
// Check to see if address is past the breakpoint, (i.e. breakpoint was hit).
if bp, ok := dbp.breakpoints[pc-uint64(dbp.arch.BreakpointSize())]; ok {
return bp, true
}
// Directly use addr to lookup breakpoint.
if bp, ok := dbp.breakpoints[pc]; ok {
return bp, true
}
return nil, false
}
// Returns a new Process struct.
func initializeDebugProcess(dbp *Process, path string, attach bool) (*Process, error) {
if attach {
var err error
dbp.execPtraceFunc(func() { err = PtraceAttach(dbp.pid) })
if err != nil {
return nil, err
}
_, _, err = dbp.wait(dbp.pid, 0)
if err != nil {
return nil, err
}
}
proc, err := os.FindProcess(dbp.pid)
if err != nil {
return nil, err
}
dbp.Process = proc
err = dbp.LoadInformation(path)
if err != nil {
return nil, err
}
if err := dbp.updateThreadList(); err != nil {
return nil, err
}
ver, isextld, err := dbp.getGoInformation()
if err != nil {
return nil, err
}
dbp.arch.SetGStructOffset(ver, isextld)
// selectedGoroutine can not be set correctly by the call to updateThreadList
// because without calling SetGStructOffset we can not read the G struct of currentThread
// but without calling updateThreadList we can not examine memory to determine
// the offset of g struct inside TLS
dbp.selectedGoroutine, _ = dbp.currentThread.GetG()
panicpc, err := dbp.FindFunctionLocation("runtime.startpanic", true, 0)
if err == nil {
bp, err := dbp.SetBreakpoint(panicpc, UserBreakpoint, nil)
if err == nil {
bp.Name = "unrecovered-panic"
bp.ID = -1
dbp.breakpointIDCounter--
}
}
return dbp, nil
}
func (dbp *Process) ClearInternalBreakpoints() error {
for _, bp := range dbp.breakpoints {
if !bp.Internal() {
continue
}
if _, err := dbp.ClearBreakpoint(bp.Addr); err != nil {
return err
}
}
for i := range dbp.threads {
if dbp.threads[i].CurrentBreakpoint != nil && dbp.threads[i].CurrentBreakpoint.Internal() {
dbp.threads[i].CurrentBreakpoint = nil
}
}
return nil
}
func (dbp *Process) handlePtraceFuncs() {
// We must ensure here that we are running on the same thread during
// while invoking the ptrace(2) syscall. This is due to the fact that ptrace(2) expects
// all commands after PTRACE_ATTACH to come from the same thread.
runtime.LockOSThread()
for fn := range dbp.ptraceChan {
fn()
dbp.ptraceDoneChan <- nil
}
}
func (dbp *Process) execPtraceFunc(fn func()) {
dbp.ptraceChan <- fn
<-dbp.ptraceDoneChan
}
func (dbp *Process) getGoInformation() (ver GoVersion, isextld bool, err error) {
vv, err := dbp.EvalPackageVariable("runtime.buildVersion", LoadConfig{true, 0, 64, 0, 0})
if err != nil {
err = fmt.Errorf("Could not determine version number: %v\n", err)
return
}
if vv.Unreadable != nil {
err = fmt.Errorf("Unreadable version number: %v\n", vv.Unreadable)
return
}
ver, ok := ParseVersionString(constant.StringVal(vv.Value))
if !ok {
err = fmt.Errorf("Could not parse version number: %v\n", vv.Value)
return
}
rdr := dbp.DwarfReader()
rdr.Seek(0)
for entry, err := rdr.NextCompileUnit(); entry != nil; entry, err = rdr.NextCompileUnit() {
if err != nil {
return ver, isextld, err
}
if prod, ok := entry.Val(dwarf.AttrProducer).(string); ok && (strings.HasPrefix(prod, "GNU AS")) {
isextld = true
break
}
}
return
}
// FindGoroutine returns a G struct representing the goroutine
// specified by `gid`.
func (dbp *Process) FindGoroutine(gid int) (*G, error) {
if gid == -1 {
return dbp.selectedGoroutine, nil
}
gs, err := dbp.GoroutinesInfo()
if err != nil {
return nil, err
}
for i := range gs {
if gs[i].ID == gid {
return gs[i], nil
}
}
return nil, fmt.Errorf("Unknown goroutine %d", gid)
}
// ConvertEvalScope returns a new EvalScope in the context of the
// specified goroutine ID and stack frame.
func (dbp *Process) ConvertEvalScope(gid, frame int) (*EvalScope, error) {
if dbp.exited {
return nil, &ProcessExitedError{}
}
g, err := dbp.FindGoroutine(gid)
if err != nil {
return nil, err
}
if g == nil {
return dbp.currentThread.Scope()
}
var out EvalScope
if g.thread == nil {
out.Thread = dbp.currentThread
} else {
out.Thread = g.thread
}
locs, err := g.Stacktrace(frame)
if err != nil {
return nil, err
}
if frame >= len(locs) {
return nil, fmt.Errorf("Frame %d does not exist in goroutine %d", frame, gid)
}
out.PC, out.CFA = locs[frame].Current.PC, locs[frame].CFA
return &out, nil
}
func (dbp *Process) postExit() {
dbp.exited = true
close(dbp.ptraceChan)
close(dbp.ptraceDoneChan)
}

231
vendor/github.com/derekparker/delve/pkg/proc/proc_darwin.c generated vendored Normal file
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#include "proc_darwin.h"
static const unsigned char info_plist[]
__attribute__ ((section ("__TEXT,__info_plist"),used)) =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\""
" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
"<plist version=\"1.0\">\n"
"<dict>\n"
" <key>CFBundleIdentifier</key>\n"
" <string>org.dlv</string>\n"
" <key>CFBundleName</key>\n"
" <string>delve</string>\n"
" <key>CFBundleVersion</key>\n"
" <string>1.0</string>\n"
" <key>SecTaskAccess</key>\n"
" <array>\n"
" <string>allowed</string>\n"
" <string>debug</string>\n"
" </array>\n"
"</dict>\n"
"</plist>\n";
kern_return_t
acquire_mach_task(int tid,
task_t *task,
mach_port_t *port_set,
mach_port_t *exception_port,
mach_port_t *notification_port)
{
kern_return_t kret;
mach_port_t prev_not;
mach_port_t self = mach_task_self();
kret = task_for_pid(self, tid, task);
if (kret != KERN_SUCCESS) return kret;
// Allocate exception port.
kret = mach_port_allocate(self, MACH_PORT_RIGHT_RECEIVE, exception_port);
if (kret != KERN_SUCCESS) return kret;
kret = mach_port_insert_right(self, *exception_port, *exception_port, MACH_MSG_TYPE_MAKE_SEND);
if (kret != KERN_SUCCESS) return kret;
kret = task_set_exception_ports(*task, EXC_MASK_BREAKPOINT|EXC_MASK_SOFTWARE, *exception_port,
EXCEPTION_DEFAULT, THREAD_STATE_NONE);
if (kret != KERN_SUCCESS) return kret;
// Allocate notification port to alert of when the process dies.
kret = mach_port_allocate(self, MACH_PORT_RIGHT_RECEIVE, notification_port);
if (kret != KERN_SUCCESS) return kret;
kret = mach_port_insert_right(self, *notification_port, *notification_port, MACH_MSG_TYPE_MAKE_SEND);
if (kret != KERN_SUCCESS) return kret;
kret = mach_port_request_notification(self, *task, MACH_NOTIFY_DEAD_NAME, 0, *notification_port,
MACH_MSG_TYPE_MAKE_SEND_ONCE, &prev_not);
if (kret != KERN_SUCCESS) return kret;
// Create port set.
kret = mach_port_allocate(self, MACH_PORT_RIGHT_PORT_SET, port_set);
if (kret != KERN_SUCCESS) return kret;
// Move exception and notification ports to port set.
kret = mach_port_move_member(self, *exception_port, *port_set);
if (kret != KERN_SUCCESS) return kret;
return mach_port_move_member(self, *notification_port, *port_set);
}
kern_return_t
reset_exception_ports(task_t task, mach_port_t *exception_port, mach_port_t *notification_port) {
kern_return_t kret;
mach_port_t prev_not;
mach_port_t self = mach_task_self();
kret = task_set_exception_ports(task, EXC_MASK_BREAKPOINT|EXC_MASK_SOFTWARE, *exception_port,
EXCEPTION_DEFAULT, THREAD_STATE_NONE);
if (kret != KERN_SUCCESS) return kret;
kret = mach_port_request_notification(self, task, MACH_NOTIFY_DEAD_NAME, 0, *notification_port,
MACH_MSG_TYPE_MAKE_SEND_ONCE, &prev_not);
if (kret != KERN_SUCCESS) return kret;
return KERN_SUCCESS;
}
char *
find_executable(int pid) {
static char pathbuf[PATH_MAX];
proc_pidpath(pid, pathbuf, PATH_MAX);
return pathbuf;
}
kern_return_t
get_threads(task_t task, void *slice, int limit) {
kern_return_t kret;
thread_act_array_t list;
mach_msg_type_number_t count;
kret = task_threads(task, &list, &count);
if (kret != KERN_SUCCESS) {
return kret;
}
if (count > limit) {
vm_deallocate(mach_task_self(), (vm_address_t) list, count * sizeof(list[0]));
return -2;
}
memcpy(slice, (void*)list, count*sizeof(list[0]));
kret = vm_deallocate(mach_task_self(), (vm_address_t) list, count * sizeof(list[0]));
if (kret != KERN_SUCCESS) return kret;
return (kern_return_t)0;
}
int
thread_count(task_t task) {
kern_return_t kret;
thread_act_array_t list;
mach_msg_type_number_t count;
kret = task_threads(task, &list, &count);
if (kret != KERN_SUCCESS) return -1;
kret = vm_deallocate(mach_task_self(), (vm_address_t) list, count * sizeof(list[0]));
if (kret != KERN_SUCCESS) return -1;
return count;
}
mach_port_t
mach_port_wait(mach_port_t port_set, task_t *task, int nonblocking) {
kern_return_t kret;
thread_act_t thread;
NDR_record_t *ndr;
integer_t *data;
union
{
mach_msg_header_t hdr;
char data[256];
} msg;
mach_msg_option_t opts = MACH_RCV_MSG|MACH_RCV_INTERRUPT;
if (nonblocking) {
opts |= MACH_RCV_TIMEOUT;
}
// Wait for mach msg.
kret = mach_msg(&msg.hdr, opts,
0, sizeof(msg.data), port_set, 10, MACH_PORT_NULL);
if (kret == MACH_RCV_INTERRUPTED) return kret;
if (kret != MACH_MSG_SUCCESS) return 0;
switch (msg.hdr.msgh_id) {
case 2401: { // Exception
// 2401 is the exception_raise event, defined in:
// http://opensource.apple.com/source/xnu/xnu-2422.1.72/osfmk/mach/exc.defs?txt
// compile this file with mig to get the C version of the description
mach_msg_body_t *bod = (mach_msg_body_t*)(&msg.hdr + 1);
mach_msg_port_descriptor_t *desc = (mach_msg_port_descriptor_t *)(bod + 1);
thread = desc[0].name;
*task = desc[1].name;
ndr = (NDR_record_t *)(desc + 2);
data = (integer_t *)(ndr + 1);
if (thread_suspend(thread) != KERN_SUCCESS) return 0;
// Send our reply back so the kernel knows this exception has been handled.
kret = mach_send_reply(msg.hdr);
if (kret != MACH_MSG_SUCCESS) return 0;
if (data[2] == EXC_SOFT_SIGNAL) {
if (data[3] != SIGTRAP) {
if (thread_resume(thread) != KERN_SUCCESS) return 0;
return mach_port_wait(port_set, task, nonblocking);
}
}
return thread;
}
case 72: { // Death
// 72 is mach_notify_dead_name, defined in:
// https://opensource.apple.com/source/xnu/xnu-1228.7.58/osfmk/mach/notify.defs?txt
// compile this file with mig to get the C version of the description
ndr = (NDR_record_t *)(&msg.hdr + 1);
*task = *((mach_port_name_t *)(ndr + 1));
return msg.hdr.msgh_local_port;
}
}
return 0;
}
kern_return_t
mach_send_reply(mach_msg_header_t hdr) {
mig_reply_error_t reply;
mach_msg_header_t *rh = &reply.Head;
rh->msgh_bits = MACH_MSGH_BITS(MACH_MSGH_BITS_REMOTE(hdr.msgh_bits), 0);
rh->msgh_remote_port = hdr.msgh_remote_port;
rh->msgh_size = (mach_msg_size_t) sizeof(mig_reply_error_t);
rh->msgh_local_port = MACH_PORT_NULL;
rh->msgh_id = hdr.msgh_id + 100;
reply.NDR = NDR_record;
reply.RetCode = KERN_SUCCESS;
return mach_msg(&reply.Head, MACH_SEND_MSG|MACH_SEND_INTERRUPT, rh->msgh_size, 0,
MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
}
kern_return_t
raise_exception(mach_port_t task, mach_port_t thread, mach_port_t exception_port, exception_type_t exception) {
return exception_raise(exception_port, thread, task, exception, 0, 0);
}
task_t
get_task_for_pid(int pid) {
task_t task = 0;
mach_port_t self = mach_task_self();
task_for_pid(self, pid, &task);
return task;
}
int
task_is_valid(task_t task) {
struct task_basic_info info;
mach_msg_type_number_t count = TASK_BASIC_INFO_COUNT;
return task_info(task, TASK_BASIC_INFO, (task_info_t)&info, &count) == KERN_SUCCESS;
}

511
vendor/github.com/derekparker/delve/pkg/proc/proc_darwin.go generated vendored Normal file
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package proc
// #include "proc_darwin.h"
// #include "threads_darwin.h"
// #include "exec_darwin.h"
// #include <stdlib.h>
import "C"
import (
"debug/gosym"
"errors"
"fmt"
"os"
"os/exec"
"path/filepath"
"sync"
"unsafe"
"golang.org/x/debug/macho"
"github.com/derekparker/delve/pkg/dwarf/frame"
"github.com/derekparker/delve/pkg/dwarf/line"
sys "golang.org/x/sys/unix"
)
// OSProcessDetails holds Darwin specific information.
type OSProcessDetails struct {
task C.task_t // mach task for the debugged process.
exceptionPort C.mach_port_t // mach port for receiving mach exceptions.
notificationPort C.mach_port_t // mach port for dead name notification (process exit).
initialized bool
// the main port we use, will return messages from both the
// exception and notification ports.
portSet C.mach_port_t
}
// Launch creates and begins debugging a new process. Uses a
// custom fork/exec process in order to take advantage of
// PT_SIGEXC on Darwin which will turn Unix signals into
// Mach exceptions.
func Launch(cmd []string, wd string) (*Process, error) {
// check that the argument to Launch is an executable file
if fi, staterr := os.Stat(cmd[0]); staterr == nil && (fi.Mode()&0111) == 0 {
return nil, NotExecutableErr
}
argv0Go, err := filepath.Abs(cmd[0])
if err != nil {
return nil, err
}
// Make sure the binary exists.
if filepath.Base(cmd[0]) == cmd[0] {
if _, err := exec.LookPath(cmd[0]); err != nil {
return nil, err
}
}
if _, err := os.Stat(argv0Go); err != nil {
return nil, err
}
argv0 := C.CString(argv0Go)
argvSlice := make([]*C.char, 0, len(cmd)+1)
for _, arg := range cmd {
argvSlice = append(argvSlice, C.CString(arg))
}
// argv array must be null terminated.
argvSlice = append(argvSlice, nil)
dbp := New(0)
var pid int
dbp.execPtraceFunc(func() {
ret := C.fork_exec(argv0, &argvSlice[0], C.int(len(argvSlice)),
C.CString(wd),
&dbp.os.task, &dbp.os.portSet, &dbp.os.exceptionPort,
&dbp.os.notificationPort)
pid = int(ret)
})
if pid <= 0 {
return nil, fmt.Errorf("could not fork/exec")
}
dbp.pid = pid
for i := range argvSlice {
C.free(unsafe.Pointer(argvSlice[i]))
}
// Initialize enough of the Process state so that we can use resume and
// trapWait to wait until the child process calls execve.
for {
err = dbp.updateThreadListForTask(C.get_task_for_pid(C.int(dbp.pid)))
if err == nil {
break
}
if err != couldNotGetThreadCount && err != couldNotGetThreadList {
return nil, err
}
}
if err := dbp.resume(); err != nil {
return nil, err
}
dbp.allGCache = nil
for _, th := range dbp.threads {
th.clearBreakpointState()
}
trapthread, err := dbp.trapWait(-1)
if err != nil {
return nil, err
}
if err := dbp.Halt(); err != nil {
return nil, dbp.exitGuard(err)
}
_, err = dbp.waitForStop()
if err != nil {
return nil, err
}
dbp.os.initialized = true
dbp, err = initializeDebugProcess(dbp, argv0Go, false)
if err != nil {
return nil, err
}
if err := dbp.SwitchThread(trapthread.ID); err != nil {
return nil, err
}
return dbp, err
}
// Attach to an existing process with the given PID.
func Attach(pid int) (*Process, error) {
dbp := New(pid)
kret := C.acquire_mach_task(C.int(pid),
&dbp.os.task, &dbp.os.portSet, &dbp.os.exceptionPort,
&dbp.os.notificationPort)
if kret != C.KERN_SUCCESS {
return nil, fmt.Errorf("could not attach to %d", pid)
}
dbp.os.initialized = true
return initializeDebugProcess(dbp, "", true)
}
// Kill kills the process.
func (dbp *Process) Kill() (err error) {
if dbp.exited {
return nil
}
err = sys.Kill(-dbp.pid, sys.SIGKILL)
if err != nil {
return errors.New("could not deliver signal: " + err.Error())
}
for port := range dbp.threads {
if C.thread_resume(C.thread_act_t(port)) != C.KERN_SUCCESS {
return errors.New("could not resume task")
}
}
for {
var task C.task_t
port := C.mach_port_wait(dbp.os.portSet, &task, C.int(0))
if port == dbp.os.notificationPort {
break
}
}
dbp.postExit()
return
}
func (dbp *Process) requestManualStop() (err error) {
var (
task = C.mach_port_t(dbp.os.task)
thread = C.mach_port_t(dbp.currentThread.os.threadAct)
exceptionPort = C.mach_port_t(dbp.os.exceptionPort)
)
kret := C.raise_exception(task, thread, exceptionPort, C.EXC_BREAKPOINT)
if kret != C.KERN_SUCCESS {
return fmt.Errorf("could not raise mach exception")
}
return nil
}
var couldNotGetThreadCount = errors.New("could not get thread count")
var couldNotGetThreadList = errors.New("could not get thread list")
func (dbp *Process) updateThreadList() error {
return dbp.updateThreadListForTask(dbp.os.task)
}
func (dbp *Process) updateThreadListForTask(task C.task_t) error {
var (
err error
kret C.kern_return_t
count C.int
list []uint32
)
for {
count = C.thread_count(task)
if count == -1 {
return couldNotGetThreadCount
}
list = make([]uint32, count)
// TODO(dp) might be better to malloc mem in C and then free it here
// instead of getting count above and passing in a slice
kret = C.get_threads(task, unsafe.Pointer(&list[0]), count)
if kret != -2 {
break
}
}
if kret != C.KERN_SUCCESS {
return couldNotGetThreadList
}
for _, thread := range dbp.threads {
thread.os.exists = false
}
for _, port := range list {
thread, ok := dbp.threads[int(port)]
if !ok {
thread, err = dbp.addThread(int(port), false)
if err != nil {
return err
}
}
thread.os.exists = true
}
for threadID, thread := range dbp.threads {
if !thread.os.exists {
delete(dbp.threads, threadID)
}
}
return nil
}
func (dbp *Process) addThread(port int, attach bool) (*Thread, error) {
if thread, ok := dbp.threads[port]; ok {
return thread, nil
}
thread := &Thread{
ID: port,
dbp: dbp,
os: new(OSSpecificDetails),
}
dbp.threads[port] = thread
thread.os.threadAct = C.thread_act_t(port)
if dbp.currentThread == nil {
dbp.SwitchThread(thread.ID)
}
return thread, nil
}
func (dbp *Process) parseDebugFrame(exe *macho.File, wg *sync.WaitGroup) {
defer wg.Done()
debugFrameSec := exe.Section("__debug_frame")
debugInfoSec := exe.Section("__debug_info")
if debugFrameSec != nil && debugInfoSec != nil {
debugFrame, err := exe.Section("__debug_frame").Data()
if err != nil {
fmt.Println("could not get __debug_frame section", err)
os.Exit(1)
}
dat, err := debugInfoSec.Data()
if err != nil {
fmt.Println("could not get .debug_info section", err)
os.Exit(1)
}
dbp.frameEntries = frame.Parse(debugFrame, frame.DwarfEndian(dat))
} else {
fmt.Println("could not find __debug_frame section in binary")
os.Exit(1)
}
}
func (dbp *Process) obtainGoSymbols(exe *macho.File, wg *sync.WaitGroup) {
defer wg.Done()
var (
symdat []byte
pclndat []byte
err error
)
if sec := exe.Section("__gosymtab"); sec != nil {
symdat, err = sec.Data()
if err != nil {
fmt.Println("could not get .gosymtab section", err)
os.Exit(1)
}
}
if sec := exe.Section("__gopclntab"); sec != nil {
pclndat, err = sec.Data()
if err != nil {
fmt.Println("could not get .gopclntab section", err)
os.Exit(1)
}
}
pcln := gosym.NewLineTable(pclndat, exe.Section("__text").Addr)
tab, err := gosym.NewTable(symdat, pcln)
if err != nil {
fmt.Println("could not get initialize line table", err)
os.Exit(1)
}
dbp.goSymTable = tab
}
func (dbp *Process) parseDebugLineInfo(exe *macho.File, wg *sync.WaitGroup) {
defer wg.Done()
if sec := exe.Section("__debug_line"); sec != nil {
debugLine, err := exe.Section("__debug_line").Data()
if err != nil {
fmt.Println("could not get __debug_line section", err)
os.Exit(1)
}
dbp.lineInfo = line.Parse(debugLine)
} else {
fmt.Println("could not find __debug_line section in binary")
os.Exit(1)
}
}
var UnsupportedArchErr = errors.New("unsupported architecture - only darwin/amd64 is supported")
func (dbp *Process) findExecutable(path string) (*macho.File, string, error) {
if path == "" {
path = C.GoString(C.find_executable(C.int(dbp.pid)))
}
exe, err := macho.Open(path)
if err != nil {
return nil, path, err
}
if exe.Cpu != macho.CpuAmd64 {
return nil, path, UnsupportedArchErr
}
dbp.dwarf, err = exe.DWARF()
if err != nil {
return nil, path, err
}
return exe, path, nil
}
func (dbp *Process) trapWait(pid int) (*Thread, error) {
for {
task := dbp.os.task
port := C.mach_port_wait(dbp.os.portSet, &task, C.int(0))
switch port {
case dbp.os.notificationPort:
// on macOS >= 10.12.1 the task_t changes after an execve, we could
// receive the notification for the death of the pre-execve task_t,
// this could also happen *before* we are notified that our task_t has
// changed.
if dbp.os.task != task {
continue
}
if !dbp.os.initialized {
if pidtask := C.get_task_for_pid(C.int(dbp.pid)); pidtask != 0 && dbp.os.task != pidtask {
continue
}
}
_, status, err := dbp.wait(dbp.pid, 0)
if err != nil {
return nil, err
}
dbp.postExit()
return nil, ProcessExitedError{Pid: dbp.pid, Status: status.ExitStatus()}
case C.MACH_RCV_INTERRUPTED:
if !dbp.halt {
// Call trapWait again, it seems
// MACH_RCV_INTERRUPTED is emitted before
// process natural death _sometimes_.
continue
}
return nil, nil
case 0:
return nil, fmt.Errorf("error while waiting for task")
}
// In macOS 10.12.1 if we received a notification for a task other than
// the inferior's task and the inferior's task is no longer valid, this
// means inferior called execve and its task_t changed.
if dbp.os.task != task && C.task_is_valid(dbp.os.task) == 0 {
dbp.os.task = task
kret := C.reset_exception_ports(dbp.os.task, &dbp.os.exceptionPort, &dbp.os.notificationPort)
if kret != C.KERN_SUCCESS {
return nil, fmt.Errorf("could not follow task across exec: %d\n", kret)
}
}
// Since we cannot be notified of new threads on OS X
// this is as good a time as any to check for them.
dbp.updateThreadList()
th, ok := dbp.threads[int(port)]
if !ok {
if dbp.halt {
dbp.halt = false
return th, nil
}
if dbp.firstStart || th.singleStepping {
dbp.firstStart = false
return th, nil
}
if err := th.Continue(); err != nil {
return nil, err
}
continue
}
return th, nil
}
}
func (dbp *Process) waitForStop() ([]int, error) {
ports := make([]int, 0, len(dbp.threads))
count := 0
for {
var task C.task_t
port := C.mach_port_wait(dbp.os.portSet, &task, C.int(1))
if port != 0 && port != dbp.os.notificationPort && port != C.MACH_RCV_INTERRUPTED {
count = 0
ports = append(ports, int(port))
} else {
n := C.num_running_threads(dbp.os.task)
if n == 0 {
return ports, nil
} else if n < 0 {
return nil, fmt.Errorf("error waiting for thread stop %d", n)
} else if count > 16 {
return nil, fmt.Errorf("could not stop process %d", n)
}
}
}
}
func (dbp *Process) setCurrentBreakpoints(trapthread *Thread) error {
ports, err := dbp.waitForStop()
if err != nil {
return err
}
trapthread.SetCurrentBreakpoint()
for _, port := range ports {
if th, ok := dbp.threads[port]; ok {
err := th.SetCurrentBreakpoint()
if err != nil {
return err
}
}
}
return nil
}
func (dbp *Process) loadProcessInformation(wg *sync.WaitGroup) {
wg.Done()
}
func (dbp *Process) wait(pid, options int) (int, *sys.WaitStatus, error) {
var status sys.WaitStatus
wpid, err := sys.Wait4(pid, &status, options, nil)
return wpid, &status, err
}
func killProcess(pid int) error {
return sys.Kill(pid, sys.SIGINT)
}
func (dbp *Process) exitGuard(err error) error {
if err != ErrContinueThread {
return err
}
_, status, werr := dbp.wait(dbp.pid, sys.WNOHANG)
if werr == nil && status.Exited() {
dbp.postExit()
return ProcessExitedError{Pid: dbp.pid, Status: status.ExitStatus()}
}
return err
}
func (dbp *Process) resume() error {
// all threads stopped over a breakpoint are made to step over it
for _, thread := range dbp.threads {
if thread.CurrentBreakpoint != nil {
if err := thread.StepInstruction(); err != nil {
return err
}
thread.CurrentBreakpoint = nil
}
}
// everything is resumed
for _, thread := range dbp.threads {
if err := thread.resume(); err != nil {
return dbp.exitGuard(err)
}
}
return nil
}

54
vendor/github.com/derekparker/delve/pkg/proc/proc_darwin.h generated vendored Normal file
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@ -0,0 +1,54 @@
#include <sys/types.h>
#include <libproc.h>
#include <mach/mach.h>
#include <mach/mach_vm.h>
#include "mach_exc.h"
#include "exc.h"
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
boolean_t exc_server(
mach_msg_header_t *InHeadP,
mach_msg_header_t *OutHeadP);
#ifdef mig_external
mig_external
#else
extern
#endif /* mig_external */
boolean_t mach_exc_server(
mach_msg_header_t *InHeadP,
mach_msg_header_t *OutHeadP);
kern_return_t
acquire_mach_task(int, task_t*, mach_port_t*, mach_port_t*, mach_port_t*);
char *
find_executable(int pid);
kern_return_t
get_threads(task_t task, void *data,int limit);
int
thread_count(task_t task);
mach_port_t
mach_port_wait(mach_port_t, task_t*, int);
kern_return_t
mach_send_reply(mach_msg_header_t);
kern_return_t
raise_exception(mach_port_t, mach_port_t, mach_port_t, exception_type_t);
kern_return_t
reset_exception_ports(task_t task, mach_port_t *exception_port, mach_port_t *notification_port);
task_t
get_task_for_pid(int pid);
int
task_is_valid(task_t task);

489
vendor/github.com/derekparker/delve/pkg/proc/proc_linux.go generated vendored Normal file
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@ -0,0 +1,489 @@
package proc
import (
"bytes"
"debug/gosym"
"errors"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
"syscall"
"time"
sys "golang.org/x/sys/unix"
"github.com/derekparker/delve/pkg/dwarf/frame"
"github.com/derekparker/delve/pkg/dwarf/line"
"golang.org/x/debug/elf"
)
// Process statuses
const (
StatusSleeping = 'S'
StatusRunning = 'R'
StatusTraceStop = 't'
StatusZombie = 'Z'
// Kernel 2.6 has TraceStop as T
// TODO(derekparker) Since this means something different based on the
// version of the kernel ('T' is job control stop on modern 3.x+ kernels) we
// may want to differentiate at some point.
StatusTraceStopT = 'T'
)
// OSProcessDetails contains Linux specific
// process details.
type OSProcessDetails struct {
comm string
}
// Launch creates and begins debugging a new process. First entry in
// `cmd` is the program to run, and then rest are the arguments
// to be supplied to that process. `wd` is working directory of the program.
func Launch(cmd []string, wd string) (*Process, error) {
var (
proc *exec.Cmd
err error
)
// check that the argument to Launch is an executable file
if fi, staterr := os.Stat(cmd[0]); staterr == nil && (fi.Mode()&0111) == 0 {
return nil, NotExecutableErr
}
dbp := New(0)
dbp.execPtraceFunc(func() {
proc = exec.Command(cmd[0])
proc.Args = cmd
proc.Stdout = os.Stdout
proc.Stderr = os.Stderr
proc.SysProcAttr = &syscall.SysProcAttr{Ptrace: true, Setpgid: true}
if wd != "" {
proc.Dir = wd
}
err = proc.Start()
})
if err != nil {
return nil, err
}
dbp.pid = proc.Process.Pid
_, _, err = dbp.wait(proc.Process.Pid, 0)
if err != nil {
return nil, fmt.Errorf("waiting for target execve failed: %s", err)
}
return initializeDebugProcess(dbp, proc.Path, false)
}
// Attach to an existing process with the given PID.
func Attach(pid int) (*Process, error) {
return initializeDebugProcess(New(pid), "", true)
}
// Kill kills the target process.
func (dbp *Process) Kill() (err error) {
if dbp.exited {
return nil
}
if !dbp.threads[dbp.pid].Stopped() {
return errors.New("process must be stopped in order to kill it")
}
if err = sys.Kill(-dbp.pid, sys.SIGKILL); err != nil {
return errors.New("could not deliver signal " + err.Error())
}
if _, _, err = dbp.wait(dbp.pid, 0); err != nil {
return
}
dbp.postExit()
return
}
func (dbp *Process) requestManualStop() (err error) {
return sys.Kill(dbp.pid, sys.SIGTRAP)
}
// Attach to a newly created thread, and store that thread in our list of
// known threads.
func (dbp *Process) addThread(tid int, attach bool) (*Thread, error) {
if thread, ok := dbp.threads[tid]; ok {
return thread, nil
}
var err error
if attach {
dbp.execPtraceFunc(func() { err = sys.PtraceAttach(tid) })
if err != nil && err != sys.EPERM {
// Do not return err if err == EPERM,
// we may already be tracing this thread due to
// PTRACE_O_TRACECLONE. We will surely blow up later
// if we truly don't have permissions.
return nil, fmt.Errorf("could not attach to new thread %d %s", tid, err)
}
pid, status, err := dbp.wait(tid, 0)
if err != nil {
return nil, err
}
if status.Exited() {
return nil, fmt.Errorf("thread already exited %d", pid)
}
}
dbp.execPtraceFunc(func() { err = syscall.PtraceSetOptions(tid, syscall.PTRACE_O_TRACECLONE) })
if err == syscall.ESRCH {
if _, _, err = dbp.wait(tid, 0); err != nil {
return nil, fmt.Errorf("error while waiting after adding thread: %d %s", tid, err)
}
dbp.execPtraceFunc(func() { err = syscall.PtraceSetOptions(tid, syscall.PTRACE_O_TRACECLONE) })
if err == syscall.ESRCH {
return nil, err
}
if err != nil {
return nil, fmt.Errorf("could not set options for new traced thread %d %s", tid, err)
}
}
dbp.threads[tid] = &Thread{
ID: tid,
dbp: dbp,
os: new(OSSpecificDetails),
}
if dbp.currentThread == nil {
dbp.SwitchThread(tid)
}
return dbp.threads[tid], nil
}
func (dbp *Process) updateThreadList() error {
tids, _ := filepath.Glob(fmt.Sprintf("/proc/%d/task/*", dbp.pid))
for _, tidpath := range tids {
tidstr := filepath.Base(tidpath)
tid, err := strconv.Atoi(tidstr)
if err != nil {
return err
}
if _, err := dbp.addThread(tid, tid != dbp.pid); err != nil {
return err
}
}
return nil
}
var UnsupportedArchErr = errors.New("unsupported architecture - only linux/amd64 is supported")
func (dbp *Process) findExecutable(path string) (*elf.File, string, error) {
if path == "" {
path = fmt.Sprintf("/proc/%d/exe", dbp.pid)
}
f, err := os.OpenFile(path, 0, os.ModePerm)
if err != nil {
return nil, path, err
}
elfFile, err := elf.NewFile(f)
if err != nil {
return nil, path, err
}
if elfFile.Machine != elf.EM_X86_64 {
return nil, path, UnsupportedArchErr
}
dbp.dwarf, err = elfFile.DWARF()
if err != nil {
return nil, path, err
}
return elfFile, path, nil
}
func (dbp *Process) parseDebugFrame(exe *elf.File, wg *sync.WaitGroup) {
defer wg.Done()
debugFrameSec := exe.Section(".debug_frame")
debugInfoSec := exe.Section(".debug_info")
if debugFrameSec != nil && debugInfoSec != nil {
debugFrame, err := exe.Section(".debug_frame").Data()
if err != nil {
fmt.Println("could not get .debug_frame section", err)
os.Exit(1)
}
dat, err := debugInfoSec.Data()
if err != nil {
fmt.Println("could not get .debug_info section", err)
os.Exit(1)
}
dbp.frameEntries = frame.Parse(debugFrame, frame.DwarfEndian(dat))
} else {
fmt.Println("could not find .debug_frame section in binary")
os.Exit(1)
}
}
func (dbp *Process) obtainGoSymbols(exe *elf.File, wg *sync.WaitGroup) {
defer wg.Done()
var (
symdat []byte
pclndat []byte
err error
)
if sec := exe.Section(".gosymtab"); sec != nil {
symdat, err = sec.Data()
if err != nil {
fmt.Println("could not get .gosymtab section", err)
os.Exit(1)
}
}
if sec := exe.Section(".gopclntab"); sec != nil {
pclndat, err = sec.Data()
if err != nil {
fmt.Println("could not get .gopclntab section", err)
os.Exit(1)
}
}
pcln := gosym.NewLineTable(pclndat, exe.Section(".text").Addr)
tab, err := gosym.NewTable(symdat, pcln)
if err != nil {
fmt.Println("could not get initialize line table", err)
os.Exit(1)
}
dbp.goSymTable = tab
}
func (dbp *Process) parseDebugLineInfo(exe *elf.File, wg *sync.WaitGroup) {
defer wg.Done()
if sec := exe.Section(".debug_line"); sec != nil {
debugLine, err := exe.Section(".debug_line").Data()
if err != nil {
fmt.Println("could not get .debug_line section", err)
os.Exit(1)
}
dbp.lineInfo = line.Parse(debugLine)
} else {
fmt.Println("could not find .debug_line section in binary")
os.Exit(1)
}
}
func (dbp *Process) trapWait(pid int) (*Thread, error) {
for {
wpid, status, err := dbp.wait(pid, 0)
if err != nil {
return nil, fmt.Errorf("wait err %s %d", err, pid)
}
if wpid == 0 {
continue
}
th, ok := dbp.threads[wpid]
if ok {
th.Status = (*WaitStatus)(status)
}
if status.Exited() {
if wpid == dbp.pid {
dbp.postExit()
return nil, ProcessExitedError{Pid: wpid, Status: status.ExitStatus()}
}
delete(dbp.threads, wpid)
continue
}
if status.StopSignal() == sys.SIGTRAP && status.TrapCause() == sys.PTRACE_EVENT_CLONE {
// A traced thread has cloned a new thread, grab the pid and
// add it to our list of traced threads.
var cloned uint
dbp.execPtraceFunc(func() { cloned, err = sys.PtraceGetEventMsg(wpid) })
if err != nil {
if err == sys.ESRCH {
// thread died while we were adding it
continue
}
return nil, fmt.Errorf("could not get event message: %s", err)
}
th, err = dbp.addThread(int(cloned), false)
if err != nil {
if err == sys.ESRCH {
// thread died while we were adding it
continue
}
return nil, err
}
if err = th.Continue(); err != nil {
if err == sys.ESRCH {
// thread died while we were adding it
delete(dbp.threads, th.ID)
continue
}
return nil, fmt.Errorf("could not continue new thread %d %s", cloned, err)
}
if err = dbp.threads[int(wpid)].Continue(); err != nil {
if err != sys.ESRCH {
return nil, fmt.Errorf("could not continue existing thread %d %s", wpid, err)
}
}
continue
}
if th == nil {
// Sometimes we get an unknown thread, ignore it?
continue
}
if status.StopSignal() == sys.SIGTRAP && dbp.halt {
th.running = false
dbp.halt = false
return th, nil
}
if status.StopSignal() == sys.SIGTRAP {
th.running = false
return th, nil
}
if th != nil {
// TODO(dp) alert user about unexpected signals here.
if err := th.resumeWithSig(int(status.StopSignal())); err != nil {
if err == sys.ESRCH {
return nil, ProcessExitedError{Pid: dbp.pid}
}
return nil, err
}
}
}
}
func (dbp *Process) loadProcessInformation(wg *sync.WaitGroup) {
defer wg.Done()
comm, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/comm", dbp.pid))
if err == nil {
// removes newline character
comm = bytes.TrimSuffix(comm, []byte("\n"))
}
if comm == nil || len(comm) <= 0 {
stat, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/stat", dbp.pid))
if err != nil {
fmt.Printf("Could not read proc stat: %v\n", err)
os.Exit(1)
}
expr := fmt.Sprintf("%d\\s*\\((.*)\\)", dbp.pid)
rexp, err := regexp.Compile(expr)
if err != nil {
fmt.Printf("Regexp compile error: %v\n", err)
os.Exit(1)
}
match := rexp.FindSubmatch(stat)
if match == nil {
fmt.Printf("No match found using regexp '%s' in /proc/%d/stat\n", expr, dbp.pid)
os.Exit(1)
}
comm = match[1]
}
dbp.os.comm = strings.Replace(string(comm), "%", "%%", -1)
}
func status(pid int, comm string) rune {
f, err := os.Open(fmt.Sprintf("/proc/%d/stat", pid))
if err != nil {
return '\000'
}
defer f.Close()
var (
p int
state rune
)
// The second field of /proc/pid/stat is the name of the task in parenthesis.
// The name of the task is the base name of the executable for this process limited to TASK_COMM_LEN characters
// Since both parenthesis and spaces can appear inside the name of the task and no escaping happens we need to read the name of the executable first
// See: include/linux/sched.c:315 and include/linux/sched.c:1510
fmt.Fscanf(f, "%d ("+comm+") %c", &p, &state)
return state
}
// waitFast is like wait but does not handle process-exit correctly
func (dbp *Process) waitFast(pid int) (int, *sys.WaitStatus, error) {
var s sys.WaitStatus
wpid, err := sys.Wait4(pid, &s, sys.WALL, nil)
return wpid, &s, err
}
func (dbp *Process) wait(pid, options int) (int, *sys.WaitStatus, error) {
var s sys.WaitStatus
if (pid != dbp.pid) || (options != 0) {
wpid, err := sys.Wait4(pid, &s, sys.WALL|options, nil)
return wpid, &s, err
}
// If we call wait4/waitpid on a thread that is the leader of its group,
// with options == 0, while ptracing and the thread leader has exited leaving
// zombies of its own then waitpid hangs forever this is apparently intended
// behaviour in the linux kernel because it's just so convenient.
// Therefore we call wait4 in a loop with WNOHANG, sleeping a while between
// calls and exiting when either wait4 succeeds or we find out that the thread
// has become a zombie.
// References:
// https://sourceware.org/bugzilla/show_bug.cgi?id=12702
// https://sourceware.org/bugzilla/show_bug.cgi?id=10095
// https://sourceware.org/bugzilla/attachment.cgi?id=5685
for {
wpid, err := sys.Wait4(pid, &s, sys.WNOHANG|sys.WALL|options, nil)
if err != nil {
return 0, nil, err
}
if wpid != 0 {
return wpid, &s, err
}
if status(pid, dbp.os.comm) == StatusZombie {
return pid, nil, nil
}
time.Sleep(200 * time.Millisecond)
}
}
func (dbp *Process) setCurrentBreakpoints(trapthread *Thread) error {
for _, th := range dbp.threads {
if th.CurrentBreakpoint == nil {
err := th.SetCurrentBreakpoint()
if err != nil {
return err
}
}
}
return nil
}
func (dbp *Process) exitGuard(err error) error {
if err != sys.ESRCH {
return err
}
if status(dbp.pid, dbp.os.comm) == StatusZombie {
_, err := dbp.trapWait(-1)
return err
}
return err
}
func (dbp *Process) resume() error {
// all threads stopped over a breakpoint are made to step over it
for _, thread := range dbp.threads {
if thread.CurrentBreakpoint != nil {
if err := thread.StepInstruction(); err != nil {
return err
}
thread.CurrentBreakpoint = nil
}
}
// everything is resumed
for _, thread := range dbp.threads {
if err := thread.resume(); err != nil && err != sys.ESRCH {
return err
}
}
return nil
}
func killProcess(pid int) error {
return sys.Kill(pid, sys.SIGINT)
}

672
vendor/github.com/derekparker/delve/pkg/proc/proc_windows.go generated vendored Normal file
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@ -0,0 +1,672 @@
package proc
import (
"debug/gosym"
"debug/pe"
"errors"
"fmt"
"os"
"os/exec"
"path/filepath"
"sync"
"syscall"
"unsafe"
sys "golang.org/x/sys/windows"
"github.com/derekparker/delve/pkg/dwarf/frame"
"github.com/derekparker/delve/pkg/dwarf/line"
"golang.org/x/debug/dwarf"
)
// OSProcessDetails holds Windows specific information.
type OSProcessDetails struct {
hProcess syscall.Handle
breakThread int
}
// Launch creates and begins debugging a new process.
func Launch(cmd []string, wd string) (*Process, error) {
argv0Go, err := filepath.Abs(cmd[0])
if err != nil {
return nil, err
}
// Make sure the binary exists and is an executable file
if filepath.Base(cmd[0]) == cmd[0] {
if _, err := exec.LookPath(cmd[0]); err != nil {
return nil, err
}
}
peFile, err := openExecutablePath(argv0Go)
if err != nil {
return nil, NotExecutableErr
}
peFile.Close()
// Duplicate the stdin/stdout/stderr handles
files := []uintptr{uintptr(syscall.Stdin), uintptr(syscall.Stdout), uintptr(syscall.Stderr)}
p, _ := syscall.GetCurrentProcess()
fd := make([]syscall.Handle, len(files))
for i := range files {
err := syscall.DuplicateHandle(p, syscall.Handle(files[i]), p, &fd[i], 0, true, syscall.DUPLICATE_SAME_ACCESS)
if err != nil {
return nil, err
}
defer syscall.CloseHandle(syscall.Handle(fd[i]))
}
argv0, err := syscall.UTF16PtrFromString(argv0Go)
if err != nil {
return nil, err
}
// create suitable command line for CreateProcess
// see https://github.com/golang/go/blob/master/src/syscall/exec_windows.go#L326
// adapted from standard library makeCmdLine
// see https://github.com/golang/go/blob/master/src/syscall/exec_windows.go#L86
var cmdLineGo string
if len(cmd) >= 1 {
for _, v := range cmd {
if cmdLineGo != "" {
cmdLineGo += " "
}
cmdLineGo += syscall.EscapeArg(v)
}
}
var cmdLine *uint16
if cmdLineGo != "" {
if cmdLine, err = syscall.UTF16PtrFromString(cmdLineGo); err != nil {
return nil, err
}
}
var workingDir *uint16
if wd != "" {
if workingDir, err = syscall.UTF16PtrFromString(wd); err != nil {
return nil, err
}
}
// Initialize the startup info and create process
si := new(sys.StartupInfo)
si.Cb = uint32(unsafe.Sizeof(*si))
si.Flags = syscall.STARTF_USESTDHANDLES
si.StdInput = sys.Handle(fd[0])
si.StdOutput = sys.Handle(fd[1])
si.StdErr = sys.Handle(fd[2])
pi := new(sys.ProcessInformation)
dbp := New(0)
dbp.execPtraceFunc(func() {
if wd == "" {
err = sys.CreateProcess(argv0, cmdLine, nil, nil, true, _DEBUG_ONLY_THIS_PROCESS, nil, nil, si, pi)
} else {
err = sys.CreateProcess(argv0, cmdLine, nil, nil, true, _DEBUG_ONLY_THIS_PROCESS, nil, workingDir, si, pi)
}
})
if err != nil {
return nil, err
}
sys.CloseHandle(sys.Handle(pi.Process))
sys.CloseHandle(sys.Handle(pi.Thread))
dbp.pid = int(pi.ProcessId)
return newDebugProcess(dbp, argv0Go)
}
// newDebugProcess prepares process pid for debugging.
func newDebugProcess(dbp *Process, exepath string) (*Process, error) {
// It should not actually be possible for the
// call to waitForDebugEvent to fail, since Windows
// will always fire a CREATE_PROCESS_DEBUG_EVENT event
// immediately after launching under DEBUG_ONLY_THIS_PROCESS.
// Attaching with DebugActiveProcess has similar effect.
var err error
var tid, exitCode int
dbp.execPtraceFunc(func() {
tid, exitCode, err = dbp.waitForDebugEvent(waitBlocking)
})
if err != nil {
return nil, err
}
if tid == 0 {
dbp.postExit()
return nil, ProcessExitedError{Pid: dbp.pid, Status: exitCode}
}
// Suspend all threads so that the call to _ContinueDebugEvent will
// not resume the target.
for _, thread := range dbp.threads {
_, err := _SuspendThread(thread.os.hThread)
if err != nil {
return nil, err
}
}
dbp.execPtraceFunc(func() {
err = _ContinueDebugEvent(uint32(dbp.pid), uint32(dbp.os.breakThread), _DBG_CONTINUE)
})
if err != nil {
return nil, err
}
return initializeDebugProcess(dbp, exepath, false)
}
// findExePath searches for process pid, and returns its executable path.
func findExePath(pid int) (string, error) {
// Original code suggested different approach (see below).
// Maybe it could be useful in the future.
//
// Find executable path from PID/handle on Windows:
// https://msdn.microsoft.com/en-us/library/aa366789(VS.85).aspx
p, err := syscall.OpenProcess(syscall.PROCESS_QUERY_INFORMATION, false, uint32(pid))
if err != nil {
return "", err
}
defer syscall.CloseHandle(p)
n := uint32(128)
for {
buf := make([]uint16, int(n))
err = _QueryFullProcessImageName(p, 0, &buf[0], &n)
switch err {
case syscall.ERROR_INSUFFICIENT_BUFFER:
// try bigger buffer
n *= 2
// but stop if it gets too big
if n > 10000 {
return "", err
}
case nil:
return syscall.UTF16ToString(buf[:n]), nil
default:
return "", err
}
}
}
// Attach to an existing process with the given PID.
func Attach(pid int) (*Process, error) {
// TODO: Probably should have SeDebugPrivilege before starting here.
err := _DebugActiveProcess(uint32(pid))
if err != nil {
return nil, err
}
exepath, err := findExePath(pid)
if err != nil {
return nil, err
}
return newDebugProcess(New(pid), exepath)
}
// Kill kills the process.
func (dbp *Process) Kill() error {
if dbp.exited {
return nil
}
if !dbp.threads[dbp.pid].Stopped() {
return errors.New("process must be stopped in order to kill it")
}
// TODO: Should not have to ignore failures here,
// but some tests appear to Kill twice causing
// this to fail on second attempt.
_ = syscall.TerminateProcess(dbp.os.hProcess, 1)
dbp.exited = true
return nil
}
func (dbp *Process) requestManualStop() error {
return _DebugBreakProcess(dbp.os.hProcess)
}
func (dbp *Process) updateThreadList() error {
// We ignore this request since threads are being
// tracked as they are created/killed in waitForDebugEvent.
return nil
}
func (dbp *Process) addThread(hThread syscall.Handle, threadID int, attach, suspendNewThreads bool) (*Thread, error) {
if thread, ok := dbp.threads[threadID]; ok {
return thread, nil
}
thread := &Thread{
ID: threadID,
dbp: dbp,
os: new(OSSpecificDetails),
}
thread.os.hThread = hThread
dbp.threads[threadID] = thread
if dbp.currentThread == nil {
dbp.SwitchThread(thread.ID)
}
if suspendNewThreads {
_, err := _SuspendThread(thread.os.hThread)
if err != nil {
return nil, err
}
}
return thread, nil
}
func (dbp *Process) parseDebugFrame(exe *pe.File, wg *sync.WaitGroup) {
defer wg.Done()
debugFrameSec := exe.Section(".debug_frame")
debugInfoSec := exe.Section(".debug_info")
if debugFrameSec != nil && debugInfoSec != nil {
debugFrame, err := debugFrameSec.Data()
if err != nil && uint32(len(debugFrame)) < debugFrameSec.Size {
fmt.Println("could not get .debug_frame section", err)
os.Exit(1)
}
if 0 < debugFrameSec.VirtualSize && debugFrameSec.VirtualSize < debugFrameSec.Size {
debugFrame = debugFrame[:debugFrameSec.VirtualSize]
}
dat, err := debugInfoSec.Data()
if err != nil {
fmt.Println("could not get .debug_info section", err)
os.Exit(1)
}
dbp.frameEntries = frame.Parse(debugFrame, frame.DwarfEndian(dat))
} else {
fmt.Println("could not find .debug_frame section in binary")
os.Exit(1)
}
}
// Borrowed from https://golang.org/src/cmd/internal/objfile/pe.go
func findPESymbol(f *pe.File, name string) (*pe.Symbol, error) {
for _, s := range f.Symbols {
if s.Name != name {
continue
}
if s.SectionNumber <= 0 {
return nil, fmt.Errorf("symbol %s: invalid section number %d", name, s.SectionNumber)
}
if len(f.Sections) < int(s.SectionNumber) {
return nil, fmt.Errorf("symbol %s: section number %d is larger than max %d", name, s.SectionNumber, len(f.Sections))
}
return s, nil
}
return nil, fmt.Errorf("no %s symbol found", name)
}
// Borrowed from https://golang.org/src/cmd/internal/objfile/pe.go
func loadPETable(f *pe.File, sname, ename string) ([]byte, error) {
ssym, err := findPESymbol(f, sname)
if err != nil {
return nil, err
}
esym, err := findPESymbol(f, ename)
if err != nil {
return nil, err
}
if ssym.SectionNumber != esym.SectionNumber {
return nil, fmt.Errorf("%s and %s symbols must be in the same section", sname, ename)
}
sect := f.Sections[ssym.SectionNumber-1]
data, err := sect.Data()
if err != nil {
return nil, err
}
return data[ssym.Value:esym.Value], nil
}
// Borrowed from https://golang.org/src/cmd/internal/objfile/pe.go
func pcln(exe *pe.File) (textStart uint64, symtab, pclntab []byte, err error) {
var imageBase uint64
switch oh := exe.OptionalHeader.(type) {
case *pe.OptionalHeader32:
imageBase = uint64(oh.ImageBase)
case *pe.OptionalHeader64:
imageBase = oh.ImageBase
default:
return 0, nil, nil, fmt.Errorf("pe file format not recognized")
}
if sect := exe.Section(".text"); sect != nil {
textStart = imageBase + uint64(sect.VirtualAddress)
}
if pclntab, err = loadPETable(exe, "runtime.pclntab", "runtime.epclntab"); err != nil {
// We didn't find the symbols, so look for the names used in 1.3 and earlier.
// TODO: Remove code looking for the old symbols when we no longer care about 1.3.
var err2 error
if pclntab, err2 = loadPETable(exe, "pclntab", "epclntab"); err2 != nil {
return 0, nil, nil, err
}
}
if symtab, err = loadPETable(exe, "runtime.symtab", "runtime.esymtab"); err != nil {
// Same as above.
var err2 error
if symtab, err2 = loadPETable(exe, "symtab", "esymtab"); err2 != nil {
return 0, nil, nil, err
}
}
return textStart, symtab, pclntab, nil
}
func (dbp *Process) obtainGoSymbols(exe *pe.File, wg *sync.WaitGroup) {
defer wg.Done()
_, symdat, pclndat, err := pcln(exe)
if err != nil {
fmt.Println("could not get Go symbols", err)
os.Exit(1)
}
pcln := gosym.NewLineTable(pclndat, uint64(exe.Section(".text").Offset))
tab, err := gosym.NewTable(symdat, pcln)
if err != nil {
fmt.Println("could not get initialize line table", err)
os.Exit(1)
}
dbp.goSymTable = tab
}
func (dbp *Process) parseDebugLineInfo(exe *pe.File, wg *sync.WaitGroup) {
defer wg.Done()
if sec := exe.Section(".debug_line"); sec != nil {
debugLine, err := sec.Data()
if err != nil && uint32(len(debugLine)) < sec.Size {
fmt.Println("could not get .debug_line section", err)
os.Exit(1)
}
if 0 < sec.VirtualSize && sec.VirtualSize < sec.Size {
debugLine = debugLine[:sec.VirtualSize]
}
dbp.lineInfo = line.Parse(debugLine)
} else {
fmt.Println("could not find .debug_line section in binary")
os.Exit(1)
}
}
var UnsupportedArchErr = errors.New("unsupported architecture of windows/386 - only windows/amd64 is supported")
func (dbp *Process) findExecutable(path string) (*pe.File, string, error) {
peFile, err := openExecutablePath(path)
if err != nil {
return nil, path, err
}
if peFile.Machine != pe.IMAGE_FILE_MACHINE_AMD64 {
return nil, path, UnsupportedArchErr
}
dbp.dwarf, err = dwarfFromPE(peFile)
if err != nil {
return nil, path, err
}
return peFile, path, nil
}
func openExecutablePath(path string) (*pe.File, error) {
f, err := os.OpenFile(path, 0, os.ModePerm)
if err != nil {
return nil, err
}
return pe.NewFile(f)
}
// Adapted from src/debug/pe/file.go: pe.(*File).DWARF()
func dwarfFromPE(f *pe.File) (*dwarf.Data, error) {
// There are many other DWARF sections, but these
// are the ones the debug/dwarf package uses.
// Don't bother loading others.
var names = [...]string{"abbrev", "info", "line", "str"}
var dat [len(names)][]byte
for i, name := range names {
name = ".debug_" + name
s := f.Section(name)
if s == nil {
continue
}
b, err := s.Data()
if err != nil && uint32(len(b)) < s.Size {
return nil, err
}
if 0 < s.VirtualSize && s.VirtualSize < s.Size {
b = b[:s.VirtualSize]
}
dat[i] = b
}
abbrev, info, line, str := dat[0], dat[1], dat[2], dat[3]
return dwarf.New(abbrev, nil, nil, info, line, nil, nil, str)
}
type waitForDebugEventFlags int
const (
waitBlocking waitForDebugEventFlags = 1 << iota
waitSuspendNewThreads
)
func (dbp *Process) waitForDebugEvent(flags waitForDebugEventFlags) (threadID, exitCode int, err error) {
var debugEvent _DEBUG_EVENT
shouldExit := false
for {
continueStatus := uint32(_DBG_CONTINUE)
var milliseconds uint32 = 0
if flags&waitBlocking != 0 {
milliseconds = syscall.INFINITE
}
// Wait for a debug event...
err := _WaitForDebugEvent(&debugEvent, milliseconds)
if err != nil {
return 0, 0, err
}
// ... handle each event kind ...
unionPtr := unsafe.Pointer(&debugEvent.U[0])
switch debugEvent.DebugEventCode {
case _CREATE_PROCESS_DEBUG_EVENT:
debugInfo := (*_CREATE_PROCESS_DEBUG_INFO)(unionPtr)
hFile := debugInfo.File
if hFile != 0 && hFile != syscall.InvalidHandle {
err = syscall.CloseHandle(hFile)
if err != nil {
return 0, 0, err
}
}
dbp.os.hProcess = debugInfo.Process
_, err = dbp.addThread(debugInfo.Thread, int(debugEvent.ThreadId), false, flags&waitSuspendNewThreads != 0)
if err != nil {
return 0, 0, err
}
break
case _CREATE_THREAD_DEBUG_EVENT:
debugInfo := (*_CREATE_THREAD_DEBUG_INFO)(unionPtr)
_, err = dbp.addThread(debugInfo.Thread, int(debugEvent.ThreadId), false, flags&waitSuspendNewThreads != 0)
if err != nil {
return 0, 0, err
}
break
case _EXIT_THREAD_DEBUG_EVENT:
delete(dbp.threads, int(debugEvent.ThreadId))
break
case _OUTPUT_DEBUG_STRING_EVENT:
//TODO: Handle debug output strings
break
case _LOAD_DLL_DEBUG_EVENT:
debugInfo := (*_LOAD_DLL_DEBUG_INFO)(unionPtr)
hFile := debugInfo.File
if hFile != 0 && hFile != syscall.InvalidHandle {
err = syscall.CloseHandle(hFile)
if err != nil {
return 0, 0, err
}
}
break
case _UNLOAD_DLL_DEBUG_EVENT:
break
case _RIP_EVENT:
break
case _EXCEPTION_DEBUG_EVENT:
exception := (*_EXCEPTION_DEBUG_INFO)(unionPtr)
tid := int(debugEvent.ThreadId)
switch code := exception.ExceptionRecord.ExceptionCode; code {
case _EXCEPTION_BREAKPOINT:
// check if the exception address really is a breakpoint instruction, if
// it isn't we already removed that breakpoint and we can't deal with
// this exception anymore.
atbp := true
if thread, found := dbp.threads[tid]; found {
if data, err := thread.readMemory(exception.ExceptionRecord.ExceptionAddress, dbp.arch.BreakpointSize()); err == nil {
instr := dbp.arch.BreakpointInstruction()
for i := range instr {
if data[i] != instr[i] {
atbp = false
break
}
}
}
if !atbp {
thread.SetPC(uint64(exception.ExceptionRecord.ExceptionAddress))
}
}
if atbp {
dbp.os.breakThread = tid
return tid, 0, nil
} else {
continueStatus = _DBG_CONTINUE
}
case _EXCEPTION_SINGLE_STEP:
dbp.os.breakThread = tid
return tid, 0, nil
default:
continueStatus = _DBG_EXCEPTION_NOT_HANDLED
}
case _EXIT_PROCESS_DEBUG_EVENT:
debugInfo := (*_EXIT_PROCESS_DEBUG_INFO)(unionPtr)
exitCode = int(debugInfo.ExitCode)
shouldExit = true
default:
return 0, 0, fmt.Errorf("unknown debug event code: %d", debugEvent.DebugEventCode)
}
// .. and then continue unless we received an event that indicated we should break into debugger.
err = _ContinueDebugEvent(debugEvent.ProcessId, debugEvent.ThreadId, continueStatus)
if err != nil {
return 0, 0, err
}
if shouldExit {
return 0, exitCode, nil
}
}
}
func (dbp *Process) trapWait(pid int) (*Thread, error) {
var err error
var tid, exitCode int
dbp.execPtraceFunc(func() {
tid, exitCode, err = dbp.waitForDebugEvent(waitBlocking)
})
if err != nil {
return nil, err
}
if tid == 0 {
dbp.postExit()
return nil, ProcessExitedError{Pid: dbp.pid, Status: exitCode}
}
th := dbp.threads[tid]
return th, nil
}
func (dbp *Process) loadProcessInformation(wg *sync.WaitGroup) {
wg.Done()
}
func (dbp *Process) wait(pid, options int) (int, *sys.WaitStatus, error) {
return 0, nil, fmt.Errorf("not implemented: wait")
}
func (dbp *Process) setCurrentBreakpoints(trapthread *Thread) error {
// While the debug event that stopped the target was being propagated
// other target threads could generate other debug events.
// After this function we need to know about all the threads
// stopped on a breakpoint. To do that we first suspend all target
// threads and then repeatedly call _ContinueDebugEvent followed by
// waitForDebugEvent in non-blocking mode.
// We need to explicitly call SuspendThread because otherwise the
// call to _ContinueDebugEvent will resume execution of some of the
// target threads.
err := trapthread.SetCurrentBreakpoint()
if err != nil {
return err
}
for _, thread := range dbp.threads {
thread.running = false
_, err := _SuspendThread(thread.os.hThread)
if err != nil {
return err
}
}
for {
var err error
var tid int
dbp.execPtraceFunc(func() {
err = _ContinueDebugEvent(uint32(dbp.pid), uint32(dbp.os.breakThread), _DBG_CONTINUE)
if err == nil {
tid, _, _ = dbp.waitForDebugEvent(waitSuspendNewThreads)
}
})
if err != nil {
return err
}
if tid == 0 {
break
}
err = dbp.threads[tid].SetCurrentBreakpoint()
if err != nil {
return err
}
}
return nil
}
func (dbp *Process) exitGuard(err error) error {
return err
}
func (dbp *Process) resume() error {
for _, thread := range dbp.threads {
if thread.CurrentBreakpoint != nil {
if err := thread.StepInstruction(); err != nil {
return err
}
thread.CurrentBreakpoint = nil
}
}
for _, thread := range dbp.threads {
thread.running = true
_, err := _ResumeThread(thread.os.hThread)
if err != nil {
return err
}
}
return nil
}
func killProcess(pid int) error {
p, err := os.FindProcess(pid)
if err != nil {
return err
}
return p.Kill()
}

28
vendor/github.com/derekparker/delve/pkg/proc/ptrace_darwin.go generated vendored Normal file
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package proc
import sys "golang.org/x/sys/unix"
// PtraceAttach executes the sys.PtraceAttach call.
func PtraceAttach(pid int) error {
return sys.PtraceAttach(pid)
}
// PtraceDetach executes the PT_DETACH ptrace call.
func PtraceDetach(tid, sig int) error {
return ptrace(sys.PT_DETACH, tid, 1, uintptr(sig))
}
// PtraceCont executes the PTRACE_CONT ptrace call.
func PtraceCont(tid, sig int) error {
return ptrace(sys.PTRACE_CONT, tid, 1, 0)
}
// PtraceSingleStep returns PT_STEP ptrace call.
func PtraceSingleStep(tid int) error {
return ptrace(sys.PT_STEP, tid, 1, 0)
}
func ptrace(request, pid int, addr uintptr, data uintptr) (err error) {
_, _, err = sys.Syscall6(sys.SYS_PTRACE, uintptr(request), uintptr(pid), uintptr(addr), uintptr(data), 0, 0)
return
}

96
vendor/github.com/derekparker/delve/pkg/proc/ptrace_linux.go generated vendored Normal file
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@ -0,0 +1,96 @@
package proc
import (
"encoding/binary"
"syscall"
"unsafe"
sys "golang.org/x/sys/unix"
)
// PtraceAttach executes the sys.PtraceAttach call.
func PtraceAttach(pid int) error {
return sys.PtraceAttach(pid)
}
// PtraceDetach calls ptrace(PTRACE_DETACH).
func PtraceDetach(tid, sig int) error {
_, _, err := sys.Syscall6(sys.SYS_PTRACE, sys.PTRACE_DETACH, uintptr(tid), 1, uintptr(sig), 0, 0)
if err != syscall.Errno(0) {
return err
}
return nil
}
// PtraceCont executes ptrace PTRACE_CONT
func PtraceCont(tid, sig int) error {
return sys.PtraceCont(tid, sig)
}
// PtraceSingleStep executes ptrace PTRACE_SINGLE_STEP.
func PtraceSingleStep(tid int) error {
return sys.PtraceSingleStep(tid)
}
// PtracePokeUser execute ptrace PTRACE_POKE_USER.
func PtracePokeUser(tid int, off, addr uintptr) error {
_, _, err := sys.Syscall6(sys.SYS_PTRACE, sys.PTRACE_POKEUSR, uintptr(tid), uintptr(off), uintptr(addr), 0, 0)
if err != syscall.Errno(0) {
return err
}
return nil
}
// PtracePeekUser execute ptrace PTRACE_PEEK_USER.
func PtracePeekUser(tid int, off uintptr) (uintptr, error) {
var val uintptr
_, _, err := syscall.Syscall6(syscall.SYS_PTRACE, syscall.PTRACE_PEEKUSR, uintptr(tid), uintptr(off), uintptr(unsafe.Pointer(&val)), 0, 0)
if err != syscall.Errno(0) {
return 0, err
}
return val, nil
}
// PtraceGetRegset returns floating point registers of the specified thread
// using PTRACE.
// See amd64_linux_fetch_inferior_registers in gdb/amd64-linux-nat.c.html
// and amd64_supply_xsave in gdb/amd64-tdep.c.html
// and Section 13.1 (and following) of Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1: Basic Architecture
func PtraceGetRegset(tid int) (regset PtraceXsave, err error) {
_, _, err = syscall.Syscall6(syscall.SYS_PTRACE, sys.PTRACE_GETFPREGS, uintptr(tid), uintptr(0), uintptr(unsafe.Pointer(&regset.PtraceFpRegs)), 0, 0)
if err == syscall.Errno(0) {
err = nil
}
var xstateargs [_X86_XSTATE_MAX_SIZE]byte
iov := sys.Iovec{Base: &xstateargs[0], Len: _X86_XSTATE_MAX_SIZE}
_, _, err = syscall.Syscall6(syscall.SYS_PTRACE, sys.PTRACE_GETREGSET, uintptr(tid), _NT_X86_XSTATE, uintptr(unsafe.Pointer(&iov)), 0, 0)
if err != syscall.Errno(0) {
return
} else {
err = nil
}
if _XSAVE_HEADER_START+_XSAVE_HEADER_LEN >= iov.Len {
return
}
xsaveheader := xstateargs[_XSAVE_HEADER_START : _XSAVE_HEADER_START+_XSAVE_HEADER_LEN]
xstate_bv := binary.LittleEndian.Uint64(xsaveheader[0:8])
xcomp_bv := binary.LittleEndian.Uint64(xsaveheader[8:16])
if xcomp_bv&(1<<63) != 0 {
// compact format not supported
return
}
if xstate_bv&(1<<2) == 0 {
// AVX state not present
return
}
avxstate := xstateargs[_XSAVE_EXTENDED_REGION_START:iov.Len]
regset.AvxState = true
copy(regset.YmmSpace[:], avxstate[:len(regset.YmmSpace)])
return
}

13
vendor/github.com/derekparker/delve/pkg/proc/ptrace_windows.go generated vendored Normal file
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package proc
import (
"fmt"
)
func PtraceAttach(pid int) error {
return fmt.Errorf("not implemented: PtraceAttach")
}
func PtraceDetach(tid, sig int) error {
return _DebugActiveProcessStop(uint32(tid))
}

231
vendor/github.com/derekparker/delve/pkg/proc/registers.go generated vendored Normal file
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package proc
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"math"
"os"
"strings"
)
// Registers is an interface for a generic register type. The
// interface encapsulates the generic values / actions
// we need independent of arch. The concrete register types
// will be different depending on OS/Arch.
type Registers interface {
PC() uint64
SP() uint64
BP() uint64
CX() uint64
TLS() uint64
Get(int) (uint64, error)
SetPC(*Thread, uint64) error
Slice() []Register
}
type Register struct {
Name string
Value string
}
func appendWordReg(regs []Register, name string, value uint16) []Register {
return append(regs, Register{name, fmt.Sprintf("%#04x", value)})
}
func appendDwordReg(regs []Register, name string, value uint32) []Register {
return append(regs, Register{name, fmt.Sprintf("%#08x", value)})
}
func appendQwordReg(regs []Register, name string, value uint64) []Register {
return append(regs, Register{name, fmt.Sprintf("%#016x", value)})
}
func appendFlagReg(regs []Register, name string, value uint64, descr flagRegisterDescr, size int) []Register {
return append(regs, Register{name, descr.Describe(value, size)})
}
func appendX87Reg(regs []Register, index int, exponent uint16, mantissa uint64) []Register {
var f float64
fset := false
const (
_SIGNBIT = 1 << 15
_EXP_BIAS = (1 << 14) - 1 // 2^(n-1) - 1 = 16383
_SPECIALEXP = (1 << 15) - 1 // all bits set
_HIGHBIT = 1 << 63
_QUIETBIT = 1 << 62
)
sign := 1.0
if exponent&_SIGNBIT != 0 {
sign = -1.0
}
exponent &= ^uint16(_SIGNBIT)
NaN := math.NaN()
Inf := math.Inf(+1)
switch exponent {
case 0:
switch {
case mantissa == 0:
f = sign * 0.0
fset = true
case mantissa&_HIGHBIT != 0:
f = NaN
fset = true
}
case _SPECIALEXP:
switch {
case mantissa&_HIGHBIT == 0:
f = sign * Inf
fset = true
default:
f = NaN // signaling NaN
fset = true
}
default:
if mantissa&_HIGHBIT == 0 {
f = NaN
fset = true
}
}
if !fset {
significand := float64(mantissa) / (1 << 63)
f = sign * math.Ldexp(significand, int(exponent-_EXP_BIAS))
}
return append(regs, Register{fmt.Sprintf("ST(%d)", index), fmt.Sprintf("%#04x%016x\t%g", exponent, mantissa, f)})
}
func appendSSEReg(regs []Register, name string, xmm []byte) []Register {
buf := bytes.NewReader(xmm)
var out bytes.Buffer
var vi [16]uint8
for i := range vi {
binary.Read(buf, binary.LittleEndian, &vi[i])
}
fmt.Fprintf(&out, "0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", vi[15], vi[14], vi[13], vi[12], vi[11], vi[10], vi[9], vi[8], vi[7], vi[6], vi[5], vi[4], vi[3], vi[2], vi[1], vi[0])
fmt.Fprintf(&out, "\tv2_int={ %02x%02x%02x%02x%02x%02x%02x%02x %02x%02x%02x%02x%02x%02x%02x%02x }", vi[7], vi[6], vi[5], vi[4], vi[3], vi[2], vi[1], vi[0], vi[15], vi[14], vi[13], vi[12], vi[11], vi[10], vi[9], vi[8])
fmt.Fprintf(&out, "\tv4_int={ %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x }", vi[3], vi[2], vi[1], vi[0], vi[7], vi[6], vi[5], vi[4], vi[11], vi[10], vi[9], vi[8], vi[15], vi[14], vi[13], vi[12])
fmt.Fprintf(&out, "\tv8_int={ %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x %02x%02x }", vi[1], vi[0], vi[3], vi[2], vi[5], vi[4], vi[7], vi[6], vi[9], vi[8], vi[11], vi[10], vi[13], vi[12], vi[15], vi[14])
fmt.Fprintf(&out, "\tv16_int={ %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x }", vi[0], vi[1], vi[2], vi[3], vi[4], vi[5], vi[6], vi[7], vi[8], vi[9], vi[10], vi[11], vi[12], vi[13], vi[14], vi[15])
buf.Seek(0, os.SEEK_SET)
var v2 [2]float64
for i := range v2 {
binary.Read(buf, binary.LittleEndian, &v2[i])
}
fmt.Fprintf(&out, "\tv2_float={ %g %g }", v2[0], v2[1])
buf.Seek(0, os.SEEK_SET)
var v4 [4]float32
for i := range v4 {
binary.Read(buf, binary.LittleEndian, &v4[i])
}
fmt.Fprintf(&out, "\tv4_float={ %g %g %g %g }", v4[0], v4[1], v4[2], v4[3])
return append(regs, Register{name, out.String()})
}
var UnknownRegisterError = errors.New("unknown register")
// Registers obtains register values from the debugged process.
func (t *Thread) Registers(floatingPoint bool) (Registers, error) {
return registers(t, floatingPoint)
}
// PC returns the current PC for this thread.
func (t *Thread) PC() (uint64, error) {
regs, err := t.Registers(false)
if err != nil {
return 0, err
}
return regs.PC(), nil
}
type flagRegisterDescr []flagDescr
type flagDescr struct {
name string
mask uint64
}
var mxcsrDescription flagRegisterDescr = []flagDescr{
{"FZ", 1 << 15},
{"RZ/RN", 1<<14 | 1<<13},
{"PM", 1 << 12},
{"UM", 1 << 11},
{"OM", 1 << 10},
{"ZM", 1 << 9},
{"DM", 1 << 8},
{"IM", 1 << 7},
{"DAZ", 1 << 6},
{"PE", 1 << 5},
{"UE", 1 << 4},
{"OE", 1 << 3},
{"ZE", 1 << 2},
{"DE", 1 << 1},
{"IE", 1 << 0},
}
var eflagsDescription flagRegisterDescr = []flagDescr{
{"CF", 1 << 0},
{"", 1 << 1},
{"PF", 1 << 2},
{"AF", 1 << 4},
{"ZF", 1 << 6},
{"SF", 1 << 7},
{"TF", 1 << 8},
{"IF", 1 << 9},
{"DF", 1 << 10},
{"OF", 1 << 11},
{"IOPL", 1<<12 | 1<<13},
{"NT", 1 << 14},
{"RF", 1 << 16},
{"VM", 1 << 17},
{"AC", 1 << 18},
{"VIF", 1 << 19},
{"VIP", 1 << 20},
{"ID", 1 << 21},
}
func (descr flagRegisterDescr) Mask() uint64 {
var r uint64
for _, f := range descr {
r = r | f.mask
}
return r
}
func (descr flagRegisterDescr) Describe(reg uint64, bitsize int) string {
var r []string
for _, f := range descr {
if f.name == "" {
continue
}
// rbm is f.mask with only the right-most bit set:
// 0001 1100 -> 0000 0100
rbm := f.mask & -f.mask
if rbm == f.mask {
if reg&f.mask != 0 {
r = append(r, f.name)
}
} else {
x := (reg & f.mask) >> uint64(math.Log2(float64(rbm)))
r = append(r, fmt.Sprintf("%s=%x", f.name, x))
}
}
if reg & ^descr.Mask() != 0 {
r = append(r, fmt.Sprintf("unknown_flags=%x", reg&^descr.Mask()))
}
return fmt.Sprintf("%#0*x\t[%s]", bitsize/4, reg, strings.Join(r, " "))
}

367
vendor/github.com/derekparker/delve/pkg/proc/registers_darwin_amd64.go generated vendored Normal file
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package proc
// #include "threads_darwin.h"
import "C"
import (
"encoding/binary"
"fmt"
"rsc.io/x86/x86asm"
"unsafe"
)
// Regs represents CPU registers on an AMD64 processor.
type Regs struct {
rax uint64
rbx uint64
rcx uint64
rdx uint64
rdi uint64
rsi uint64
rbp uint64
rsp uint64
r8 uint64
r9 uint64
r10 uint64
r11 uint64
r12 uint64
r13 uint64
r14 uint64
r15 uint64
rip uint64
rflags uint64
cs uint64
fs uint64
gs uint64
gsBase uint64
fpregs []Register
}
func (r *Regs) Slice() []Register {
var regs = []struct {
k string
v uint64
}{
{"Rip", r.rip},
{"Rsp", r.rsp},
{"Rax", r.rax},
{"Rbx", r.rbx},
{"Rcx", r.rcx},
{"Rdx", r.rdx},
{"Rdi", r.rdi},
{"Rsi", r.rsi},
{"Rbp", r.rbp},
{"R8", r.r8},
{"R9", r.r9},
{"R10", r.r10},
{"R11", r.r11},
{"R12", r.r12},
{"R13", r.r13},
{"R14", r.r14},
{"R15", r.r15},
{"Rflags", r.rflags},
{"Cs", r.cs},
{"Fs", r.fs},
{"Gs", r.gs},
{"Gs_base", r.gsBase},
}
out := make([]Register, 0, len(regs)+len(r.fpregs))
for _, reg := range regs {
if reg.k == "Rflags" {
out = appendFlagReg(out, reg.k, reg.v, eflagsDescription, 64)
} else {
out = appendQwordReg(out, reg.k, reg.v)
}
}
out = append(out, r.fpregs...)
return out
}
// PC returns the current program counter
// i.e. the RIP CPU register.
func (r *Regs) PC() uint64 {
return r.rip
}
// SP returns the stack pointer location,
// i.e. the RSP register.
func (r *Regs) SP() uint64 {
return r.rsp
}
func (r *Regs) BP() uint64 {
return r.rbp
}
// CX returns the value of the RCX register.
func (r *Regs) CX() uint64 {
return r.rcx
}
// TLS returns the value of the register
// that contains the location of the thread
// local storage segment.
func (r *Regs) TLS() uint64 {
return r.gsBase
}
// SetPC sets the RIP register to the value specified by `pc`.
func (r *Regs) SetPC(thread *Thread, pc uint64) error {
kret := C.set_pc(thread.os.threadAct, C.uint64_t(pc))
if kret != C.KERN_SUCCESS {
return fmt.Errorf("could not set pc")
}
return nil
}
func (r *Regs) Get(n int) (uint64, error) {
reg := x86asm.Reg(n)
const (
mask8 = 0x000f
mask16 = 0x00ff
mask32 = 0xffff
)
switch reg {
// 8-bit
case x86asm.AL:
return r.rax & mask8, nil
case x86asm.CL:
return r.rcx & mask8, nil
case x86asm.DL:
return r.rdx & mask8, nil
case x86asm.BL:
return r.rbx & mask8, nil
case x86asm.AH:
return (r.rax >> 8) & mask8, nil
case x86asm.CH:
return (r.rcx >> 8) & mask8, nil
case x86asm.DH:
return (r.rdx >> 8) & mask8, nil
case x86asm.BH:
return (r.rbx >> 8) & mask8, nil
case x86asm.SPB:
return r.rsp & mask8, nil
case x86asm.BPB:
return r.rbp & mask8, nil
case x86asm.SIB:
return r.rsi & mask8, nil
case x86asm.DIB:
return r.rdi & mask8, nil
case x86asm.R8B:
return r.r8 & mask8, nil
case x86asm.R9B:
return r.r9 & mask8, nil
case x86asm.R10B:
return r.r10 & mask8, nil
case x86asm.R11B:
return r.r11 & mask8, nil
case x86asm.R12B:
return r.r12 & mask8, nil
case x86asm.R13B:
return r.r13 & mask8, nil
case x86asm.R14B:
return r.r14 & mask8, nil
case x86asm.R15B:
return r.r15 & mask8, nil
// 16-bit
case x86asm.AX:
return r.rax & mask16, nil
case x86asm.CX:
return r.rcx & mask16, nil
case x86asm.DX:
return r.rdx & mask16, nil
case x86asm.BX:
return r.rbx & mask16, nil
case x86asm.SP:
return r.rsp & mask16, nil
case x86asm.BP:
return r.rbp & mask16, nil
case x86asm.SI:
return r.rsi & mask16, nil
case x86asm.DI:
return r.rdi & mask16, nil
case x86asm.R8W:
return r.r8 & mask16, nil
case x86asm.R9W:
return r.r9 & mask16, nil
case x86asm.R10W:
return r.r10 & mask16, nil
case x86asm.R11W:
return r.r11 & mask16, nil
case x86asm.R12W:
return r.r12 & mask16, nil
case x86asm.R13W:
return r.r13 & mask16, nil
case x86asm.R14W:
return r.r14 & mask16, nil
case x86asm.R15W:
return r.r15 & mask16, nil
// 32-bit
case x86asm.EAX:
return r.rax & mask32, nil
case x86asm.ECX:
return r.rcx & mask32, nil
case x86asm.EDX:
return r.rdx & mask32, nil
case x86asm.EBX:
return r.rbx & mask32, nil
case x86asm.ESP:
return r.rsp & mask32, nil
case x86asm.EBP:
return r.rbp & mask32, nil
case x86asm.ESI:
return r.rsi & mask32, nil
case x86asm.EDI:
return r.rdi & mask32, nil
case x86asm.R8L:
return r.r8 & mask32, nil
case x86asm.R9L:
return r.r9 & mask32, nil
case x86asm.R10L:
return r.r10 & mask32, nil
case x86asm.R11L:
return r.r11 & mask32, nil
case x86asm.R12L:
return r.r12 & mask32, nil
case x86asm.R13L:
return r.r13 & mask32, nil
case x86asm.R14L:
return r.r14 & mask32, nil
case x86asm.R15L:
return r.r15 & mask32, nil
// 64-bit
case x86asm.RAX:
return r.rax, nil
case x86asm.RCX:
return r.rcx, nil
case x86asm.RDX:
return r.rdx, nil
case x86asm.RBX:
return r.rbx, nil
case x86asm.RSP:
return r.rsp, nil
case x86asm.RBP:
return r.rbp, nil
case x86asm.RSI:
return r.rsi, nil
case x86asm.RDI:
return r.rdi, nil
case x86asm.R8:
return r.r8, nil
case x86asm.R9:
return r.r9, nil
case x86asm.R10:
return r.r10, nil
case x86asm.R11:
return r.r11, nil
case x86asm.R12:
return r.r12, nil
case x86asm.R13:
return r.r13, nil
case x86asm.R14:
return r.r14, nil
case x86asm.R15:
return r.r15, nil
}
return 0, UnknownRegisterError
}
func registers(thread *Thread, floatingPoint bool) (Registers, error) {
var state C.x86_thread_state64_t
var identity C.thread_identifier_info_data_t
kret := C.get_registers(C.mach_port_name_t(thread.os.threadAct), &state)
if kret != C.KERN_SUCCESS {
return nil, fmt.Errorf("could not get registers")
}
kret = C.get_identity(C.mach_port_name_t(thread.os.threadAct), &identity)
if kret != C.KERN_SUCCESS {
return nil, fmt.Errorf("could not get thread identity informations")
}
/*
thread_identifier_info::thread_handle contains the base of the
thread-specific data area, which on x86 and x86_64 is the thread’s base
address of the %gs segment. 10.9.2 xnu-2422.90.20/osfmk/kern/thread.c
thread_info_internal() gets the value from
machine_thread::cthread_self, which is the same value used to set the
%gs base in xnu-2422.90.20/osfmk/i386/pcb_native.c
act_machine_switch_pcb().
--
comment copied from chromium's crashpad
https://chromium.googlesource.com/crashpad/crashpad/+/master/snapshot/mac/process_reader.cc
*/
regs := &Regs{
rax: uint64(state.__rax),
rbx: uint64(state.__rbx),
rcx: uint64(state.__rcx),
rdx: uint64(state.__rdx),
rdi: uint64(state.__rdi),
rsi: uint64(state.__rsi),
rbp: uint64(state.__rbp),
rsp: uint64(state.__rsp),
r8: uint64(state.__r8),
r9: uint64(state.__r9),
r10: uint64(state.__r10),
r11: uint64(state.__r11),
r12: uint64(state.__r12),
r13: uint64(state.__r13),
r14: uint64(state.__r14),
r15: uint64(state.__r15),
rip: uint64(state.__rip),
rflags: uint64(state.__rflags),
cs: uint64(state.__cs),
fs: uint64(state.__fs),
gs: uint64(state.__gs),
gsBase: uint64(identity.thread_handle),
}
if floatingPoint {
// https://opensource.apple.com/source/xnu/xnu-792.13.8/osfmk/mach/i386/thread_status.h?txt
var fpstate C.x86_float_state64_t
kret = C.get_fpu_registers(C.mach_port_name_t(thread.os.threadAct), &fpstate)
if kret != C.KERN_SUCCESS {
return nil, fmt.Errorf("could not get floating point registers")
}
regs.fpregs = appendWordReg(regs.fpregs, "CW", *((*uint16)(unsafe.Pointer(&fpstate.__fpu_fcw))))
regs.fpregs = appendWordReg(regs.fpregs, "SW", *((*uint16)(unsafe.Pointer(&fpstate.__fpu_fsw))))
regs.fpregs = appendWordReg(regs.fpregs, "TW", uint16(fpstate.__fpu_ftw))
regs.fpregs = appendWordReg(regs.fpregs, "FOP", uint16(fpstate.__fpu_fop))
regs.fpregs = appendQwordReg(regs.fpregs, "FIP", uint64(fpstate.__fpu_cs)<<32|uint64(fpstate.__fpu_ip))
regs.fpregs = appendQwordReg(regs.fpregs, "FDP", uint64(fpstate.__fpu_ds)<<32|uint64(fpstate.__fpu_dp))
for i, st := range []*C.char{&fpstate.__fpu_stmm0.__mmst_reg[0], &fpstate.__fpu_stmm1.__mmst_reg[0], &fpstate.__fpu_stmm2.__mmst_reg[0], &fpstate.__fpu_stmm3.__mmst_reg[0], &fpstate.__fpu_stmm4.__mmst_reg[0], &fpstate.__fpu_stmm5.__mmst_reg[0], &fpstate.__fpu_stmm6.__mmst_reg[0], &fpstate.__fpu_stmm7.__mmst_reg[0]} {
stb := C.GoBytes(unsafe.Pointer(st), 10)
mantissa := binary.LittleEndian.Uint64(stb[:8])
exponent := binary.LittleEndian.Uint16(stb[8:])
regs.fpregs = appendX87Reg(regs.fpregs, i, exponent, mantissa)
}
regs.fpregs = appendFlagReg(regs.fpregs, "MXCSR", uint64(fpstate.__fpu_mxcsr), mxcsrDescription, 32)
regs.fpregs = appendDwordReg(regs.fpregs, "MXCSR_MASK", uint32(fpstate.__fpu_mxcsrmask))
for i, xmm := range []*C.char{&fpstate.__fpu_xmm0.__xmm_reg[0], &fpstate.__fpu_xmm1.__xmm_reg[0], &fpstate.__fpu_xmm2.__xmm_reg[0], &fpstate.__fpu_xmm3.__xmm_reg[0], &fpstate.__fpu_xmm4.__xmm_reg[0], &fpstate.__fpu_xmm5.__xmm_reg[0], &fpstate.__fpu_xmm6.__xmm_reg[0], &fpstate.__fpu_xmm7.__xmm_reg[0], &fpstate.__fpu_xmm8.__xmm_reg[0], &fpstate.__fpu_xmm9.__xmm_reg[0], &fpstate.__fpu_xmm10.__xmm_reg[0], &fpstate.__fpu_xmm11.__xmm_reg[0], &fpstate.__fpu_xmm12.__xmm_reg[0], &fpstate.__fpu_xmm13.__xmm_reg[0], &fpstate.__fpu_xmm14.__xmm_reg[0], &fpstate.__fpu_xmm15.__xmm_reg[0]} {
regs.fpregs = appendSSEReg(regs.fpregs, fmt.Sprintf("XMM%d", i), C.GoBytes(unsafe.Pointer(xmm), 16))
}
}
return regs, nil
}
func (thread *Thread) saveRegisters() (Registers, error) {
kret := C.get_registers(C.mach_port_name_t(thread.os.threadAct), &thread.os.registers)
if kret != C.KERN_SUCCESS {
return nil, fmt.Errorf("could not save register contents")
}
return &Regs{rip: uint64(thread.os.registers.__rip), rsp: uint64(thread.os.registers.__rsp)}, nil
}
func (thread *Thread) restoreRegisters() error {
kret := C.set_registers(C.mach_port_name_t(thread.os.threadAct), &thread.os.registers)
if kret != C.KERN_SUCCESS {
return fmt.Errorf("could not save register contents")
}
return nil
}

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vendor/github.com/derekparker/delve/pkg/proc/registers_linux_amd64.go generated vendored Normal file
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package proc
import (
"fmt"
"rsc.io/x86/x86asm"
sys "golang.org/x/sys/unix"
)
// Regs is a wrapper for sys.PtraceRegs.
type Regs struct {
regs *sys.PtraceRegs
fpregs []Register
}
func (r *Regs) Slice() []Register {
var regs = []struct {
k string
v uint64
}{
{"Rip", r.regs.Rip},
{"Rsp", r.regs.Rsp},
{"Rax", r.regs.Rax},
{"Rbx", r.regs.Rbx},
{"Rcx", r.regs.Rcx},
{"Rdx", r.regs.Rdx},
{"Rdi", r.regs.Rdi},
{"Rsi", r.regs.Rsi},
{"Rbp", r.regs.Rbp},
{"R8", r.regs.R8},
{"R9", r.regs.R9},
{"R10", r.regs.R10},
{"R11", r.regs.R11},
{"R12", r.regs.R12},
{"R13", r.regs.R13},
{"R14", r.regs.R14},
{"R15", r.regs.R15},
{"Orig_rax", r.regs.Orig_rax},
{"Cs", r.regs.Cs},
{"Eflags", r.regs.Eflags},
{"Ss", r.regs.Ss},
{"Fs_base", r.regs.Fs_base},
{"Gs_base", r.regs.Gs_base},
{"Ds", r.regs.Ds},
{"Es", r.regs.Es},
{"Fs", r.regs.Fs},
{"Gs", r.regs.Gs},
}
out := make([]Register, 0, len(regs)+len(r.fpregs))
for _, reg := range regs {
if reg.k == "Eflags" {
out = appendFlagReg(out, reg.k, reg.v, eflagsDescription, 64)
} else {
out = appendQwordReg(out, reg.k, reg.v)
}
}
out = append(out, r.fpregs...)
return out
}
// PC returns the value of RIP register.
func (r *Regs) PC() uint64 {
return r.regs.PC()
}
// SP returns the value of RSP register.
func (r *Regs) SP() uint64 {
return r.regs.Rsp
}
func (r *Regs) BP() uint64 {
return r.regs.Rbp
}
// CX returns the value of RCX register.
func (r *Regs) CX() uint64 {
return r.regs.Rcx
}
// TLS returns the address of the thread
// local storage memory segment.
func (r *Regs) TLS() uint64 {
return r.regs.Fs_base
}
// SetPC sets RIP to the value specified by 'pc'.
func (r *Regs) SetPC(thread *Thread, pc uint64) (err error) {
r.regs.SetPC(pc)
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, r.regs) })
return
}
func (r *Regs) Get(n int) (uint64, error) {
reg := x86asm.Reg(n)
const (
mask8 = 0x000f
mask16 = 0x00ff
mask32 = 0xffff
)
switch reg {
// 8-bit
case x86asm.AL:
return r.regs.Rax & mask8, nil
case x86asm.CL:
return r.regs.Rcx & mask8, nil
case x86asm.DL:
return r.regs.Rdx & mask8, nil
case x86asm.BL:
return r.regs.Rbx & mask8, nil
case x86asm.AH:
return (r.regs.Rax >> 8) & mask8, nil
case x86asm.CH:
return (r.regs.Rcx >> 8) & mask8, nil
case x86asm.DH:
return (r.regs.Rdx >> 8) & mask8, nil
case x86asm.BH:
return (r.regs.Rbx >> 8) & mask8, nil
case x86asm.SPB:
return r.regs.Rsp & mask8, nil
case x86asm.BPB:
return r.regs.Rbp & mask8, nil
case x86asm.SIB:
return r.regs.Rsi & mask8, nil
case x86asm.DIB:
return r.regs.Rdi & mask8, nil
case x86asm.R8B:
return r.regs.R8 & mask8, nil
case x86asm.R9B:
return r.regs.R9 & mask8, nil
case x86asm.R10B:
return r.regs.R10 & mask8, nil
case x86asm.R11B:
return r.regs.R11 & mask8, nil
case x86asm.R12B:
return r.regs.R12 & mask8, nil
case x86asm.R13B:
return r.regs.R13 & mask8, nil
case x86asm.R14B:
return r.regs.R14 & mask8, nil
case x86asm.R15B:
return r.regs.R15 & mask8, nil
// 16-bit
case x86asm.AX:
return r.regs.Rax & mask16, nil
case x86asm.CX:
return r.regs.Rcx & mask16, nil
case x86asm.DX:
return r.regs.Rdx & mask16, nil
case x86asm.BX:
return r.regs.Rbx & mask16, nil
case x86asm.SP:
return r.regs.Rsp & mask16, nil
case x86asm.BP:
return r.regs.Rbp & mask16, nil
case x86asm.SI:
return r.regs.Rsi & mask16, nil
case x86asm.DI:
return r.regs.Rdi & mask16, nil
case x86asm.R8W:
return r.regs.R8 & mask16, nil
case x86asm.R9W:
return r.regs.R9 & mask16, nil
case x86asm.R10W:
return r.regs.R10 & mask16, nil
case x86asm.R11W:
return r.regs.R11 & mask16, nil
case x86asm.R12W:
return r.regs.R12 & mask16, nil
case x86asm.R13W:
return r.regs.R13 & mask16, nil
case x86asm.R14W:
return r.regs.R14 & mask16, nil
case x86asm.R15W:
return r.regs.R15 & mask16, nil
// 32-bit
case x86asm.EAX:
return r.regs.Rax & mask32, nil
case x86asm.ECX:
return r.regs.Rcx & mask32, nil
case x86asm.EDX:
return r.regs.Rdx & mask32, nil
case x86asm.EBX:
return r.regs.Rbx & mask32, nil
case x86asm.ESP:
return r.regs.Rsp & mask32, nil
case x86asm.EBP:
return r.regs.Rbp & mask32, nil
case x86asm.ESI:
return r.regs.Rsi & mask32, nil
case x86asm.EDI:
return r.regs.Rdi & mask32, nil
case x86asm.R8L:
return r.regs.R8 & mask32, nil
case x86asm.R9L:
return r.regs.R9 & mask32, nil
case x86asm.R10L:
return r.regs.R10 & mask32, nil
case x86asm.R11L:
return r.regs.R11 & mask32, nil
case x86asm.R12L:
return r.regs.R12 & mask32, nil
case x86asm.R13L:
return r.regs.R13 & mask32, nil
case x86asm.R14L:
return r.regs.R14 & mask32, nil
case x86asm.R15L:
return r.regs.R15 & mask32, nil
// 64-bit
case x86asm.RAX:
return r.regs.Rax, nil
case x86asm.RCX:
return r.regs.Rcx, nil
case x86asm.RDX:
return r.regs.Rdx, nil
case x86asm.RBX:
return r.regs.Rbx, nil
case x86asm.RSP:
return r.regs.Rsp, nil
case x86asm.RBP:
return r.regs.Rbp, nil
case x86asm.RSI:
return r.regs.Rsi, nil
case x86asm.RDI:
return r.regs.Rdi, nil
case x86asm.R8:
return r.regs.R8, nil
case x86asm.R9:
return r.regs.R9, nil
case x86asm.R10:
return r.regs.R10, nil
case x86asm.R11:
return r.regs.R11, nil
case x86asm.R12:
return r.regs.R12, nil
case x86asm.R13:
return r.regs.R13, nil
case x86asm.R14:
return r.regs.R14, nil
case x86asm.R15:
return r.regs.R15, nil
}
return 0, UnknownRegisterError
}
func registers(thread *Thread, floatingPoint bool) (Registers, error) {
var (
regs sys.PtraceRegs
err error
)
thread.dbp.execPtraceFunc(func() { err = sys.PtraceGetRegs(thread.ID, &regs) })
if err != nil {
return nil, err
}
r := &Regs{&regs, nil}
if floatingPoint {
r.fpregs, err = thread.fpRegisters()
if err != nil {
return nil, err
}
}
return r, nil
}
// tracks user_fpregs_struct in /usr/include/x86_64-linux-gnu/sys/user.h
type PtraceFpRegs struct {
Cwd uint16
Swd uint16
Ftw uint16
Fop uint16
Rip uint64
Rdp uint64
Mxcsr uint32
MxcrMask uint32
StSpace [32]uint32
XmmSpace [256]byte
padding [24]uint32
}
type PtraceXsave struct {
PtraceFpRegs
AvxState bool // contains AVX state
YmmSpace [256]byte
}
const (
_X86_XSTATE_MAX_SIZE = 2688
_NT_X86_XSTATE = 0x202
_XSAVE_HEADER_START = 512
_XSAVE_HEADER_LEN = 64
_XSAVE_EXTENDED_REGION_START = 576
_XSAVE_SSE_REGION_LEN = 416
)
func (thread *Thread) fpRegisters() (regs []Register, err error) {
var fpregs PtraceXsave
thread.dbp.execPtraceFunc(func() { fpregs, err = PtraceGetRegset(thread.ID) })
// x87 registers
regs = appendWordReg(regs, "CW", fpregs.Cwd)
regs = appendWordReg(regs, "SW", fpregs.Swd)
regs = appendWordReg(regs, "TW", fpregs.Ftw)
regs = appendWordReg(regs, "FOP", fpregs.Fop)
regs = appendQwordReg(regs, "FIP", fpregs.Rip)
regs = appendQwordReg(regs, "FDP", fpregs.Rdp)
for i := 0; i < len(fpregs.StSpace); i += 4 {
regs = appendX87Reg(regs, i/4, uint16(fpregs.StSpace[i+2]), uint64(fpregs.StSpace[i+1])<<32|uint64(fpregs.StSpace[i]))
}
// SSE registers
regs = appendFlagReg(regs, "MXCSR", uint64(fpregs.Mxcsr), mxcsrDescription, 32)
regs = appendDwordReg(regs, "MXCSR_MASK", fpregs.MxcrMask)
for i := 0; i < len(fpregs.XmmSpace); i += 16 {
regs = appendSSEReg(regs, fmt.Sprintf("XMM%d", i/16), fpregs.XmmSpace[i:i+16])
if fpregs.AvxState {
regs = appendSSEReg(regs, fmt.Sprintf("YMM%d", i/16), fpregs.YmmSpace[i:i+16])
}
}
return
}

351
vendor/github.com/derekparker/delve/pkg/proc/registers_windows_amd64.go generated vendored Normal file
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package proc
import (
"fmt"
"rsc.io/x86/x86asm"
"unsafe"
)
// Regs represents CPU registers on an AMD64 processor.
type Regs struct {
rax uint64
rbx uint64
rcx uint64
rdx uint64
rdi uint64
rsi uint64
rbp uint64
rsp uint64
r8 uint64
r9 uint64
r10 uint64
r11 uint64
r12 uint64
r13 uint64
r14 uint64
r15 uint64
rip uint64
eflags uint64
cs uint64
fs uint64
gs uint64
tls uint64
fltSave *_XMM_SAVE_AREA32
}
func (r *Regs) Slice() []Register {
var regs = []struct {
k string
v uint64
}{
{"Rip", r.rip},
{"Rsp", r.rsp},
{"Rax", r.rax},
{"Rbx", r.rbx},
{"Rcx", r.rcx},
{"Rdx", r.rdx},
{"Rdi", r.rdi},
{"Rsi", r.rsi},
{"Rbp", r.rbp},
{"R8", r.r8},
{"R9", r.r9},
{"R10", r.r10},
{"R11", r.r11},
{"R12", r.r12},
{"R13", r.r13},
{"R14", r.r14},
{"R15", r.r15},
{"Eflags", r.eflags},
{"Cs", r.cs},
{"Fs", r.fs},
{"Gs", r.gs},
{"TLS", r.tls},
}
outlen := len(regs)
if r.fltSave != nil {
outlen += 6 + 8 + 2 + 16
}
out := make([]Register, 0, outlen)
for _, reg := range regs {
if reg.k == "Eflags" {
out = append(out, Register{reg.k, eflagsDescription.Describe(reg.v, 64)})
} else {
out = appendQwordReg(out, reg.k, reg.v)
}
}
if r.fltSave != nil {
out = appendWordReg(out, "CW", r.fltSave.ControlWord)
out = appendWordReg(out, "SW", r.fltSave.StatusWord)
out = appendWordReg(out, "TW", uint16(r.fltSave.TagWord))
out = appendWordReg(out, "FOP", r.fltSave.ErrorOpcode)
out = appendQwordReg(out, "FIP", uint64(r.fltSave.ErrorSelector)<<32|uint64(r.fltSave.ErrorOffset))
out = appendQwordReg(out, "FDP", uint64(r.fltSave.DataSelector)<<32|uint64(r.fltSave.DataOffset))
for i := range r.fltSave.FloatRegisters {
out = appendX87Reg(out, i, uint16(r.fltSave.FloatRegisters[i].High), r.fltSave.FloatRegisters[i].Low)
}
out = appendFlagReg(out, "MXCSR", uint64(r.fltSave.MxCsr), mxcsrDescription, 32)
out = appendDwordReg(out, "MXCSR_MASK", r.fltSave.MxCsr_Mask)
for i := 0; i < len(r.fltSave.XmmRegisters); i += 16 {
out = appendSSEReg(out, fmt.Sprintf("XMM%d", i/16), r.fltSave.XmmRegisters[i:i+16])
}
}
return out
}
// PC returns the current program counter
// i.e. the RIP CPU register.
func (r *Regs) PC() uint64 {
return r.rip
}
// SP returns the stack pointer location,
// i.e. the RSP register.
func (r *Regs) SP() uint64 {
return r.rsp
}
func (r *Regs) BP() uint64 {
return r.rbp
}
// CX returns the value of the RCX register.
func (r *Regs) CX() uint64 {
return r.rcx
}
// TLS returns the value of the register
// that contains the location of the thread
// local storage segment.
func (r *Regs) TLS() uint64 {
return r.tls
}
// SetPC sets the RIP register to the value specified by `pc`.
func (r *Regs) SetPC(thread *Thread, pc uint64) error {
context := newCONTEXT()
context.ContextFlags = _CONTEXT_ALL
err := _GetThreadContext(thread.os.hThread, context)
if err != nil {
return err
}
context.Rip = pc
return _SetThreadContext(thread.os.hThread, context)
}
func (r *Regs) Get(n int) (uint64, error) {
reg := x86asm.Reg(n)
const (
mask8 = 0x000f
mask16 = 0x00ff
mask32 = 0xffff
)
switch reg {
// 8-bit
case x86asm.AL:
return r.rax & mask8, nil
case x86asm.CL:
return r.rcx & mask8, nil
case x86asm.DL:
return r.rdx & mask8, nil
case x86asm.BL:
return r.rbx & mask8, nil
case x86asm.AH:
return (r.rax >> 8) & mask8, nil
case x86asm.CH:
return (r.rcx >> 8) & mask8, nil
case x86asm.DH:
return (r.rdx >> 8) & mask8, nil
case x86asm.BH:
return (r.rbx >> 8) & mask8, nil
case x86asm.SPB:
return r.rsp & mask8, nil
case x86asm.BPB:
return r.rbp & mask8, nil
case x86asm.SIB:
return r.rsi & mask8, nil
case x86asm.DIB:
return r.rdi & mask8, nil
case x86asm.R8B:
return r.r8 & mask8, nil
case x86asm.R9B:
return r.r9 & mask8, nil
case x86asm.R10B:
return r.r10 & mask8, nil
case x86asm.R11B:
return r.r11 & mask8, nil
case x86asm.R12B:
return r.r12 & mask8, nil
case x86asm.R13B:
return r.r13 & mask8, nil
case x86asm.R14B:
return r.r14 & mask8, nil
case x86asm.R15B:
return r.r15 & mask8, nil
// 16-bit
case x86asm.AX:
return r.rax & mask16, nil
case x86asm.CX:
return r.rcx & mask16, nil
case x86asm.DX:
return r.rdx & mask16, nil
case x86asm.BX:
return r.rbx & mask16, nil
case x86asm.SP:
return r.rsp & mask16, nil
case x86asm.BP:
return r.rbp & mask16, nil
case x86asm.SI:
return r.rsi & mask16, nil
case x86asm.DI:
return r.rdi & mask16, nil
case x86asm.R8W:
return r.r8 & mask16, nil
case x86asm.R9W:
return r.r9 & mask16, nil
case x86asm.R10W:
return r.r10 & mask16, nil
case x86asm.R11W:
return r.r11 & mask16, nil
case x86asm.R12W:
return r.r12 & mask16, nil
case x86asm.R13W:
return r.r13 & mask16, nil
case x86asm.R14W:
return r.r14 & mask16, nil
case x86asm.R15W:
return r.r15 & mask16, nil
// 32-bit
case x86asm.EAX:
return r.rax & mask32, nil
case x86asm.ECX:
return r.rcx & mask32, nil
case x86asm.EDX:
return r.rdx & mask32, nil
case x86asm.EBX:
return r.rbx & mask32, nil
case x86asm.ESP:
return r.rsp & mask32, nil
case x86asm.EBP:
return r.rbp & mask32, nil
case x86asm.ESI:
return r.rsi & mask32, nil
case x86asm.EDI:
return r.rdi & mask32, nil
case x86asm.R8L:
return r.r8 & mask32, nil
case x86asm.R9L:
return r.r9 & mask32, nil
case x86asm.R10L:
return r.r10 & mask32, nil
case x86asm.R11L:
return r.r11 & mask32, nil
case x86asm.R12L:
return r.r12 & mask32, nil
case x86asm.R13L:
return r.r13 & mask32, nil
case x86asm.R14L:
return r.r14 & mask32, nil
case x86asm.R15L:
return r.r15 & mask32, nil
// 64-bit
case x86asm.RAX:
return r.rax, nil
case x86asm.RCX:
return r.rcx, nil
case x86asm.RDX:
return r.rdx, nil
case x86asm.RBX:
return r.rbx, nil
case x86asm.RSP:
return r.rsp, nil
case x86asm.RBP:
return r.rbp, nil
case x86asm.RSI:
return r.rsi, nil
case x86asm.RDI:
return r.rdi, nil
case x86asm.R8:
return r.r8, nil
case x86asm.R9:
return r.r9, nil
case x86asm.R10:
return r.r10, nil
case x86asm.R11:
return r.r11, nil
case x86asm.R12:
return r.r12, nil
case x86asm.R13:
return r.r13, nil
case x86asm.R14:
return r.r14, nil
case x86asm.R15:
return r.r15, nil
}
return 0, UnknownRegisterError
}
func registers(thread *Thread, floatingPoint bool) (Registers, error) {
context := newCONTEXT()
context.ContextFlags = _CONTEXT_ALL
err := _GetThreadContext(thread.os.hThread, context)
if err != nil {
return nil, err
}
var threadInfo _THREAD_BASIC_INFORMATION
status := _NtQueryInformationThread(thread.os.hThread, _ThreadBasicInformation, uintptr(unsafe.Pointer(&threadInfo)), uint32(unsafe.Sizeof(threadInfo)), nil)
if !_NT_SUCCESS(status) {
return nil, fmt.Errorf("NtQueryInformationThread failed: it returns 0x%x", status)
}
regs := &Regs{
rax: uint64(context.Rax),
rbx: uint64(context.Rbx),
rcx: uint64(context.Rcx),
rdx: uint64(context.Rdx),
rdi: uint64(context.Rdi),
rsi: uint64(context.Rsi),
rbp: uint64(context.Rbp),
rsp: uint64(context.Rsp),
r8: uint64(context.R8),
r9: uint64(context.R9),
r10: uint64(context.R10),
r11: uint64(context.R11),
r12: uint64(context.R12),
r13: uint64(context.R13),
r14: uint64(context.R14),
r15: uint64(context.R15),
rip: uint64(context.Rip),
eflags: uint64(context.EFlags),
cs: uint64(context.SegCs),
fs: uint64(context.SegFs),
gs: uint64(context.SegGs),
tls: uint64(threadInfo.TebBaseAddress),
}
if floatingPoint {
regs.fltSave = &context.FltSave
}
return regs, nil
}
func (thread *Thread) saveRegisters() (Registers, error) {
return nil, fmt.Errorf("not implemented: saveRegisters")
}
func (thread *Thread) restoreRegisters() error {
return fmt.Errorf("not implemented: restoreRegisters")
}

261
vendor/github.com/derekparker/delve/pkg/proc/stack.go generated vendored Normal file
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package proc
import (
"errors"
"fmt"
"github.com/derekparker/delve/pkg/dwarf/frame"
)
// This code is partly adaped from runtime.gentraceback in
// $GOROOT/src/runtime/traceback.go
const runtimeStackBarrier = "runtime.stackBarrier"
// NoReturnAddr is returned when return address
// could not be found during stack trace.
type NoReturnAddr struct {
fn string
}
func (nra NoReturnAddr) Error() string {
return fmt.Sprintf("could not find return address for %s", nra.fn)
}
// Stackframe represents a frame in a system stack.
type Stackframe struct {
// Address the function above this one on the call stack will return to.
Current Location
// Address of the call instruction for the function above on the call stack.
Call Location
// Start address of the stack frame.
CFA int64
// Description of the stack frame.
FDE *frame.FrameDescriptionEntry
// Return address for this stack frame (as read from the stack frame itself).
Ret uint64
// Address to the memory location containing the return address
addrret uint64
}
// Scope returns a new EvalScope using this frame.
func (frame *Stackframe) Scope(thread *Thread) *EvalScope {
return &EvalScope{Thread: thread, PC: frame.Current.PC, CFA: frame.CFA}
}
// ReturnAddress returns the return address of the function
// this thread is executing.
func (t *Thread) ReturnAddress() (uint64, error) {
locations, err := t.Stacktrace(2)
if err != nil {
return 0, err
}
if len(locations) < 2 {
return 0, NoReturnAddr{locations[0].Current.Fn.BaseName()}
}
return locations[1].Current.PC, nil
}
func (t *Thread) stackIterator(stkbar []savedLR, stkbarPos int) (*stackIterator, error) {
regs, err := t.Registers(false)
if err != nil {
return nil, err
}
return newStackIterator(t.dbp, regs.PC(), regs.SP(), regs.BP(), stkbar, stkbarPos), nil
}
// Stacktrace returns the stack trace for thread.
// Note the locations in the array are return addresses not call addresses.
func (t *Thread) Stacktrace(depth int) ([]Stackframe, error) {
it, err := t.stackIterator(nil, -1)
if err != nil {
return nil, err
}
return it.stacktrace(depth)
}
func (g *G) stackIterator() (*stackIterator, error) {
stkbar, err := g.stkbar()
if err != nil {
return nil, err
}
if g.thread != nil {
return g.thread.stackIterator(stkbar, g.stkbarPos)
}
return newStackIterator(g.dbp, g.PC, g.SP, 0, stkbar, g.stkbarPos), nil
}
// Stacktrace returns the stack trace for a goroutine.
// Note the locations in the array are return addresses not call addresses.
func (g *G) Stacktrace(depth int) ([]Stackframe, error) {
it, err := g.stackIterator()
if err != nil {
return nil, err
}
return it.stacktrace(depth)
}
// GoroutineLocation returns the location of the given
// goroutine.
func (dbp *Process) GoroutineLocation(g *G) *Location {
f, l, fn := dbp.PCToLine(g.PC)
return &Location{PC: g.PC, File: f, Line: l, Fn: fn}
}
// NullAddrError is an error for a null address.
type NullAddrError struct{}
func (n NullAddrError) Error() string {
return "NULL address"
}
// stackIterator holds information
// required to iterate and walk the program
// stack.
type stackIterator struct {
pc, sp, bp uint64
top bool
atend bool
frame Stackframe
dbp *Process
err error
stackBarrierPC uint64
stkbar []savedLR
}
type savedLR struct {
ptr uint64
val uint64
}
func newStackIterator(dbp *Process, pc, sp, bp uint64, stkbar []savedLR, stkbarPos int) *stackIterator {
stackBarrierFunc := dbp.goSymTable.LookupFunc(runtimeStackBarrier) // stack barriers were removed in Go 1.9
var stackBarrierPC uint64
if stackBarrierFunc != nil && stkbar != nil {
stackBarrierPC = stackBarrierFunc.Entry
fn := dbp.goSymTable.PCToFunc(pc)
if fn != nil && fn.Name == runtimeStackBarrier {
// We caught the goroutine as it's executing the stack barrier, we must
// determine whether or not g.stackPos has already been incremented or not.
if len(stkbar) > 0 && stkbar[stkbarPos].ptr < sp {
// runtime.stackBarrier has not incremented stkbarPos.
} else if stkbarPos > 0 && stkbar[stkbarPos-1].ptr < sp {
// runtime.stackBarrier has incremented stkbarPos.
stkbarPos--
} else {
return &stackIterator{err: fmt.Errorf("failed to unwind through stackBarrier at SP %x", sp)}
}
}
stkbar = stkbar[stkbarPos:]
}
return &stackIterator{pc: pc, sp: sp, bp: bp, top: true, dbp: dbp, err: nil, atend: false, stackBarrierPC: stackBarrierPC, stkbar: stkbar}
}
// Next points the iterator to the next stack frame.
func (it *stackIterator) Next() bool {
if it.err != nil || it.atend {
return false
}
it.frame, it.err = it.dbp.frameInfo(it.pc, it.sp, it.bp, it.top)
if it.err != nil {
if _, nofde := it.err.(*frame.NoFDEForPCError); nofde && !it.top {
it.frame = Stackframe{Current: Location{PC: it.pc, File: "?", Line: -1}, Call: Location{PC: it.pc, File: "?", Line: -1}, CFA: 0, Ret: 0}
it.atend = true
it.err = nil
return true
}
return false
}
if it.frame.Ret <= 0 {
it.atend = true
return true
}
if it.stkbar != nil && it.frame.Ret == it.stackBarrierPC && it.frame.addrret == it.stkbar[0].ptr {
// Skip stack barrier frames
it.frame.Ret = it.stkbar[0].val
it.stkbar = it.stkbar[1:]
}
// Look for "top of stack" functions.
if it.frame.Current.Fn != nil && (it.frame.Current.Fn.Name == "runtime.goexit" || it.frame.Current.Fn.Name == "runtime.rt0_go" || it.frame.Current.Fn.Name == "runtime.mcall") {
it.atend = true
return true
}
it.top = false
it.pc = it.frame.Ret
it.sp = uint64(it.frame.CFA)
it.bp, _ = readUintRaw(it.dbp.currentThread, uintptr(it.bp), int64(it.dbp.arch.PtrSize()))
return true
}
// Frame returns the frame the iterator is pointing at.
func (it *stackIterator) Frame() Stackframe {
if it.err != nil {
panic(it.err)
}
return it.frame
}
// Err returns the error encountered during stack iteration.
func (it *stackIterator) Err() error {
return it.err
}
func (dbp *Process) frameInfo(pc, sp, bp uint64, top bool) (Stackframe, error) {
fde, err := dbp.frameEntries.FDEForPC(pc)
if _, nofde := err.(*frame.NoFDEForPCError); nofde {
if bp == 0 {
return Stackframe{}, err
}
// When no FDE is available attempt to use BP instead
retaddr := uintptr(int(bp) + dbp.arch.PtrSize())
cfa := int64(retaddr) + int64(dbp.arch.PtrSize())
return dbp.newStackframe(pc, cfa, retaddr, nil, top)
}
spoffset, retoffset := fde.ReturnAddressOffset(pc)
cfa := int64(sp) + spoffset
retaddr := uintptr(cfa + retoffset)
return dbp.newStackframe(pc, cfa, retaddr, fde, top)
}
func (dbp *Process) newStackframe(pc uint64, cfa int64, retaddr uintptr, fde *frame.FrameDescriptionEntry, top bool) (Stackframe, error) {
if retaddr == 0 {
return Stackframe{}, NullAddrError{}
}
f, l, fn := dbp.PCToLine(pc)
ret, err := readUintRaw(dbp.currentThread, retaddr, int64(dbp.arch.PtrSize()))
if err != nil {
return Stackframe{}, err
}
r := Stackframe{Current: Location{PC: pc, File: f, Line: l, Fn: fn}, CFA: cfa, FDE: fde, Ret: ret, addrret: uint64(retaddr)}
if !top {
r.Call.File, r.Call.Line, r.Call.Fn = dbp.PCToLine(pc - 1)
r.Call.PC = r.Current.PC
} else {
r.Call = r.Current
}
return r, nil
}
func (it *stackIterator) stacktrace(depth int) ([]Stackframe, error) {
if depth < 0 {
return nil, errors.New("negative maximum stack depth")
}
frames := make([]Stackframe, 0, depth+1)
for it.Next() {
frames = append(frames, it.Frame())
if len(frames) >= depth+1 {
break
}
}
if err := it.Err(); err != nil {
return nil, err
}
return frames, nil
}

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vendor/github.com/derekparker/delve/pkg/proc/syscall_windows.go generated vendored Normal file
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//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go syscall_windows.go
package proc
import (
"syscall"
)
type _NTSTATUS int32
type _CLIENT_ID struct {
UniqueProcess syscall.Handle
UniqueThread syscall.Handle
}
type _THREAD_BASIC_INFORMATION struct {
ExitStatus _NTSTATUS
TebBaseAddress uintptr
ClientId _CLIENT_ID
AffinityMask uintptr
Priority int32
BasePriority int32
}
type _CREATE_PROCESS_DEBUG_INFO struct {
File syscall.Handle
Process syscall.Handle
Thread syscall.Handle
BaseOfImage uintptr
DebugInfoFileOffset uint32
DebugInfoSize uint32
ThreadLocalBase uintptr
StartAddress uintptr
ImageName uintptr
Unicode uint16
}
type _CREATE_THREAD_DEBUG_INFO struct {
Thread syscall.Handle
ThreadLocalBase uintptr
StartAddress uintptr
}
type _EXIT_PROCESS_DEBUG_INFO struct {
ExitCode uint32
}
type _LOAD_DLL_DEBUG_INFO struct {
File syscall.Handle
BaseOfDll uintptr
DebugInfoFileOffset uint32
DebugInfoSize uint32
ImageName uintptr
Unicode uint16
}
type _EXCEPTION_DEBUG_INFO struct {
ExceptionRecord _EXCEPTION_RECORD
FirstChance uint32
}
type _EXCEPTION_RECORD struct {
ExceptionCode uint32
ExceptionFlags uint32
ExceptionRecord *_EXCEPTION_RECORD
ExceptionAddress uintptr
NumberParameters uint32
ExceptionInformation [_EXCEPTION_MAXIMUM_PARAMETERS]uintptr
}
const (
_ThreadBasicInformation = 0
_DBG_CONTINUE = 0x00010002
_DBG_EXCEPTION_NOT_HANDLED = 0x80010001
_EXCEPTION_DEBUG_EVENT = 1
_CREATE_THREAD_DEBUG_EVENT = 2
_CREATE_PROCESS_DEBUG_EVENT = 3
_EXIT_THREAD_DEBUG_EVENT = 4
_EXIT_PROCESS_DEBUG_EVENT = 5
_LOAD_DLL_DEBUG_EVENT = 6
_UNLOAD_DLL_DEBUG_EVENT = 7
_OUTPUT_DEBUG_STRING_EVENT = 8
_RIP_EVENT = 9
// DEBUG_ONLY_THIS_PROCESS tracks https://msdn.microsoft.com/en-us/library/windows/desktop/ms684863(v=vs.85).aspx
_DEBUG_ONLY_THIS_PROCESS = 0x00000002
_EXCEPTION_BREAKPOINT = 0x80000003
_EXCEPTION_SINGLE_STEP = 0x80000004
_EXCEPTION_MAXIMUM_PARAMETERS = 15
)
func _NT_SUCCESS(x _NTSTATUS) bool {
return x >= 0
}
//sys _NtQueryInformationThread(threadHandle syscall.Handle, infoclass int32, info uintptr, infolen uint32, retlen *uint32) (status _NTSTATUS) = ntdll.NtQueryInformationThread
//sys _GetThreadContext(thread syscall.Handle, context *_CONTEXT) (err error) = kernel32.GetThreadContext
//sys _SetThreadContext(thread syscall.Handle, context *_CONTEXT) (err error) = kernel32.SetThreadContext
//sys _SuspendThread(threadid syscall.Handle) (prevsuspcount uint32, err error) [failretval==0xffffffff] = kernel32.SuspendThread
//sys _ResumeThread(threadid syscall.Handle) (prevsuspcount uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread
//sys _ContinueDebugEvent(processid uint32, threadid uint32, continuestatus uint32) (err error) = kernel32.ContinueDebugEvent
//sys _WriteProcessMemory(process syscall.Handle, baseaddr uintptr, buffer *byte, size uintptr, byteswritten *uintptr) (err error) = kernel32.WriteProcessMemory
//sys _ReadProcessMemory(process syscall.Handle, baseaddr uintptr, buffer *byte, size uintptr, bytesread *uintptr) (err error) = kernel32.ReadProcessMemory
//sys _DebugBreakProcess(process syscall.Handle) (err error) = kernel32.DebugBreakProcess
//sys _WaitForDebugEvent(debugevent *_DEBUG_EVENT, milliseconds uint32) (err error) = kernel32.WaitForDebugEvent
//sys _DebugActiveProcess(processid uint32) (err error) = kernel32.DebugActiveProcess
//sys _DebugActiveProcessStop(processid uint32) (err error) = kernel32.DebugActiveProcessStop
//sys _QueryFullProcessImageName(process syscall.Handle, flags uint32, exename *uint16, size *uint32) (err error) = kernel32.QueryFullProcessImageNameW

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vendor/github.com/derekparker/delve/pkg/proc/syscall_windows_amd64.go generated vendored Normal file
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package proc
import "unsafe"
const (
_CONTEXT_AMD64 = 0x100000
_CONTEXT_CONTROL = (_CONTEXT_AMD64 | 0x1)
_CONTEXT_INTEGER = (_CONTEXT_AMD64 | 0x2)
_CONTEXT_SEGMENTS = (_CONTEXT_AMD64 | 0x4)
_CONTEXT_FLOATING_POINT = (_CONTEXT_AMD64 | 0x8)
_CONTEXT_DEBUG_REGISTERS = (_CONTEXT_AMD64 | 0x10)
_CONTEXT_FULL = (_CONTEXT_CONTROL | _CONTEXT_INTEGER | _CONTEXT_FLOATING_POINT)
_CONTEXT_ALL = (_CONTEXT_CONTROL | _CONTEXT_INTEGER | _CONTEXT_SEGMENTS | _CONTEXT_FLOATING_POINT | _CONTEXT_DEBUG_REGISTERS)
_CONTEXT_EXCEPTION_ACTIVE = 0x8000000
_CONTEXT_SERVICE_ACTIVE = 0x10000000
_CONTEXT_EXCEPTION_REQUEST = 0x40000000
_CONTEXT_EXCEPTION_REPORTING = 0x80000000
)
type _M128A struct {
Low uint64
High int64
}
type _XMM_SAVE_AREA32 struct {
ControlWord uint16
StatusWord uint16
TagWord byte
Reserved1 byte
ErrorOpcode uint16
ErrorOffset uint32
ErrorSelector uint16
Reserved2 uint16
DataOffset uint32
DataSelector uint16
Reserved3 uint16
MxCsr uint32
MxCsr_Mask uint32
FloatRegisters [8]_M128A
XmmRegisters [256]byte
Reserved4 [96]byte
}
type _CONTEXT struct {
P1Home uint64
P2Home uint64
P3Home uint64
P4Home uint64
P5Home uint64
P6Home uint64
ContextFlags uint32
MxCsr uint32
SegCs uint16
SegDs uint16
SegEs uint16
SegFs uint16
SegGs uint16
SegSs uint16
EFlags uint32
Dr0 uint64
Dr1 uint64
Dr2 uint64
Dr3 uint64
Dr6 uint64
Dr7 uint64
Rax uint64
Rcx uint64
Rdx uint64
Rbx uint64
Rsp uint64
Rbp uint64
Rsi uint64
Rdi uint64
R8 uint64
R9 uint64
R10 uint64
R11 uint64
R12 uint64
R13 uint64
R14 uint64
R15 uint64
Rip uint64
FltSave _XMM_SAVE_AREA32
VectorRegister [26]_M128A
VectorControl uint64
DebugControl uint64
LastBranchToRip uint64
LastBranchFromRip uint64
LastExceptionToRip uint64
LastExceptionFromRip uint64
}
// newCONTEXT allocates Windows CONTEXT structure aligned to 16 bytes.
func newCONTEXT() *_CONTEXT {
var c *_CONTEXT
buf := make([]byte, unsafe.Sizeof(*c)+15)
return (*_CONTEXT)(unsafe.Pointer((uintptr(unsafe.Pointer(&buf[15]))) &^ 15))
}
type _DEBUG_EVENT struct {
DebugEventCode uint32
ProcessId uint32
ThreadId uint32
_ uint32 // to align Union properly
U [160]byte
}

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vendor/github.com/derekparker/delve/pkg/proc/threads.go generated vendored Normal file
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package proc
import (
"debug/gosym"
"encoding/binary"
"errors"
"fmt"
"go/ast"
"path/filepath"
"reflect"
"runtime"
"strings"
"golang.org/x/debug/dwarf"
)
// Thread represents a single thread in the traced process
// ID represents the thread id or port, Process holds a reference to the
// Process struct that contains info on the process as
// a whole, and Status represents the last result of a `wait` call
// on this thread.
type Thread struct {
ID int // Thread ID or mach port
Status *WaitStatus // Status returned from last wait call
CurrentBreakpoint *Breakpoint // Breakpoint thread is currently stopped at
BreakpointConditionMet bool // Output of evaluating the breakpoint's condition
BreakpointConditionError error // Error evaluating the breakpoint's condition
dbp *Process
singleStepping bool
running bool
os *OSSpecificDetails
}
// Location represents the location of a thread.
// Holds information on the current instruction
// address, the source file:line, and the function.
type Location struct {
PC uint64
File string
Line int
Fn *gosym.Func
}
// Continue the execution of this thread.
//
// If we are currently at a breakpoint, we'll clear it
// first and then resume execution. Thread will continue until
// it hits a breakpoint or is signaled.
func (thread *Thread) Continue() error {
pc, err := thread.PC()
if err != nil {
return err
}
// Check whether we are stopped at a breakpoint, and
// if so, single step over it before continuing.
if _, ok := thread.dbp.FindBreakpoint(pc); ok {
if err := thread.StepInstruction(); err != nil {
return err
}
}
return thread.resume()
}
// StepInstruction steps a single instruction.
//
// Executes exactly one instruction and then returns.
// If the thread is at a breakpoint, we first clear it,
// execute the instruction, and then replace the breakpoint.
// Otherwise we simply execute the next instruction.
func (thread *Thread) StepInstruction() (err error) {
thread.running = true
thread.singleStepping = true
defer func() {
thread.singleStepping = false
thread.running = false
}()
pc, err := thread.PC()
if err != nil {
return err
}
bp, ok := thread.dbp.FindBreakpoint(pc)
if ok {
// Clear the breakpoint so that we can continue execution.
_, err = bp.Clear(thread)
if err != nil {
return err
}
// Restore breakpoint now that we have passed it.
defer func() {
err = thread.dbp.writeSoftwareBreakpoint(thread, bp.Addr)
}()
}
err = thread.singleStep()
if err != nil {
if _, exited := err.(ProcessExitedError); exited {
return err
}
return fmt.Errorf("step failed: %s", err.Error())
}
return nil
}
// Location returns the threads location, including the file:line
// of the corresponding source code, the function we're in
// and the current instruction address.
func (thread *Thread) Location() (*Location, error) {
pc, err := thread.PC()
if err != nil {
return nil, err
}
f, l, fn := thread.dbp.PCToLine(pc)
return &Location{PC: pc, File: f, Line: l, Fn: fn}, nil
}
// ThreadBlockedError is returned when the thread
// is blocked in the scheduler.
type ThreadBlockedError struct{}
func (tbe ThreadBlockedError) Error() string {
return ""
}
// returns topmost frame of g or thread if g is nil
func topframe(g *G, thread *Thread) (Stackframe, error) {
var frames []Stackframe
var err error
if g == nil {
if thread.blocked() {
return Stackframe{}, ThreadBlockedError{}
}
frames, err = thread.Stacktrace(0)
} else {
frames, err = g.Stacktrace(0)
}
if err != nil {
return Stackframe{}, err
}
if len(frames) < 1 {
return Stackframe{}, errors.New("empty stack trace")
}
return frames[0], nil
}
// Set breakpoints at every line, and the return address. Also look for
// a deferred function and set a breakpoint there too.
// If stepInto is true it will also set breakpoints inside all
// functions called on the current source line, for non-absolute CALLs
// a breakpoint of kind StepBreakpoint is set on the CALL instruction,
// Continue will take care of setting a breakpoint to the destination
// once the CALL is reached.
func (dbp *Process) next(stepInto bool) error {
topframe, err := topframe(dbp.selectedGoroutine, dbp.currentThread)
if err != nil {
return err
}
success := false
defer func() {
if !success {
dbp.ClearInternalBreakpoints()
}
}()
csource := filepath.Ext(topframe.Current.File) != ".go"
thread := dbp.currentThread
currentGoroutine := false
if dbp.selectedGoroutine != nil && dbp.selectedGoroutine.thread != nil {
thread = dbp.selectedGoroutine.thread
currentGoroutine = true
}
text, err := thread.Disassemble(topframe.FDE.Begin(), topframe.FDE.End(), currentGoroutine)
if err != nil && stepInto {
return err
}
cond := sameGoroutineCondition(dbp.selectedGoroutine)
if stepInto {
for _, instr := range text {
if instr.Loc.File != topframe.Current.File || instr.Loc.Line != topframe.Current.Line || !instr.IsCall() {
continue
}
if instr.DestLoc != nil && instr.DestLoc.Fn != nil {
if err := dbp.setStepIntoBreakpoint([]AsmInstruction{instr}, cond); err != nil {
return err
}
} else {
// Non-absolute call instruction, set a StepBreakpoint here
if _, err := dbp.SetBreakpoint(instr.Loc.PC, StepBreakpoint, cond); err != nil {
if _, ok := err.(BreakpointExistsError); !ok {
return err
}
}
}
}
}
if !csource {
deferreturns := []uint64{}
// Find all runtime.deferreturn locations in the function
// See documentation of Breakpoint.DeferCond for why this is necessary
for _, instr := range text {
if instr.IsCall() && instr.DestLoc != nil && instr.DestLoc.Fn != nil && instr.DestLoc.Fn.Name == "runtime.deferreturn" {
deferreturns = append(deferreturns, instr.Loc.PC)
}
}
// Set breakpoint on the most recently deferred function (if any)
var deferpc uint64 = 0
if dbp.selectedGoroutine != nil {
deferPCEntry := dbp.selectedGoroutine.DeferPC()
if deferPCEntry != 0 {
_, _, deferfn := dbp.goSymTable.PCToLine(deferPCEntry)
var err error
deferpc, err = dbp.FirstPCAfterPrologue(deferfn, false)
if err != nil {
return err
}
}
}
if deferpc != 0 && deferpc != topframe.Current.PC {
bp, err := dbp.SetBreakpoint(deferpc, NextDeferBreakpoint, cond)
if err != nil {
if _, ok := err.(BreakpointExistsError); !ok {
return err
}
}
if bp != nil {
bp.DeferReturns = deferreturns
}
}
}
// Add breakpoints on all the lines in the current function
pcs, err := dbp.lineInfo.AllPCsBetween(topframe.FDE.Begin(), topframe.FDE.End()-1, topframe.Current.File)
if err != nil {
return err
}
if !csource {
var covered bool
for i := range pcs {
if topframe.FDE.Cover(pcs[i]) {
covered = true
break
}
}
if !covered {
fn := dbp.goSymTable.PCToFunc(topframe.Ret)
if dbp.selectedGoroutine != nil && fn != nil && fn.Name == "runtime.goexit" {
return nil
}
}
}
// Add a breakpoint on the return address for the current frame
pcs = append(pcs, topframe.Ret)
success = true
return dbp.setInternalBreakpoints(topframe.Current.PC, pcs, NextBreakpoint, cond)
}
func (dbp *Process) setStepIntoBreakpoint(text []AsmInstruction, cond ast.Expr) error {
if len(text) <= 0 {
return nil
}
instr := text[0]
if instr.DestLoc == nil || instr.DestLoc.Fn == nil {
return nil
}
fn := instr.DestLoc.Fn
// Ensure PC and Entry match, otherwise StepInto is likely to set
// its breakpoint before DestLoc.PC and hence run too far ahead.
// Calls to runtime.duffzero and duffcopy have this problem.
if fn.Entry != instr.DestLoc.PC {
return nil
}
// Skip unexported runtime functions
if strings.HasPrefix(fn.Name, "runtime.") && !isExportedRuntime(fn.Name) {
return nil
}
//TODO(aarzilli): if we want to let users hide functions
// or entire packages from being stepped into with 'step'
// those extra checks should be done here.
// Set a breakpoint after the function's prologue
pc, _ := dbp.FirstPCAfterPrologue(fn, false)
if _, err := dbp.SetBreakpoint(pc, NextBreakpoint, cond); err != nil {
if _, ok := err.(BreakpointExistsError); !ok {
return err
}
}
return nil
}
// setInternalBreakpoints sets a breakpoint to all addresses specified in pcs
// skipping over curpc and curpc-1
func (dbp *Process) setInternalBreakpoints(curpc uint64, pcs []uint64, kind BreakpointKind, cond ast.Expr) error {
for i := range pcs {
if pcs[i] == curpc || pcs[i] == curpc-1 {
continue
}
if _, err := dbp.SetBreakpoint(pcs[i], kind, cond); err != nil {
if _, ok := err.(BreakpointExistsError); !ok {
dbp.ClearInternalBreakpoints()
return err
}
}
}
return nil
}
// SetPC sets the PC for this thread.
func (thread *Thread) SetPC(pc uint64) error {
regs, err := thread.Registers(false)
if err != nil {
return err
}
return regs.SetPC(thread, pc)
}
func (thread *Thread) getGVariable() (*Variable, error) {
regs, err := thread.Registers(false)
if err != nil {
return nil, err
}
if thread.dbp.arch.GStructOffset() == 0 {
// GetG was called through SwitchThread / updateThreadList during initialization
// thread.dbp.arch isn't setup yet (it needs a current thread to read global variables from)
return nil, fmt.Errorf("g struct offset not initialized")
}
gaddrbs, err := thread.readMemory(uintptr(regs.TLS()+thread.dbp.arch.GStructOffset()), thread.dbp.arch.PtrSize())
if err != nil {
return nil, err
}
gaddr := uintptr(binary.LittleEndian.Uint64(gaddrbs))
// On Windows, the value at TLS()+GStructOffset() is a
// pointer to the G struct.
needsDeref := runtime.GOOS == "windows"
return thread.newGVariable(gaddr, needsDeref)
}
func (thread *Thread) newGVariable(gaddr uintptr, deref bool) (*Variable, error) {
typ, err := thread.dbp.findType("runtime.g")
if err != nil {
return nil, err
}
name := ""
if deref {
typ = &dwarf.PtrType{dwarf.CommonType{int64(thread.dbp.arch.PtrSize()), "", reflect.Ptr, 0}, typ}
} else {
name = "runtime.curg"
}
return thread.newVariable(name, gaddr, typ), nil
}
// GetG returns information on the G (goroutine) that is executing on this thread.
//
// The G structure for a thread is stored in thread local storage. Here we simply
// calculate the address and read and parse the G struct.
//
// We cannot simply use the allg linked list in order to find the M that represents
// the given OS thread and follow its G pointer because on Darwin mach ports are not
// universal, so our port for this thread would not map to the `id` attribute of the M
// structure. Also, when linked against libc, Go prefers the libc version of clone as
// opposed to the runtime version. This has the consequence of not setting M.id for
// any thread, regardless of OS.
//
// In order to get around all this craziness, we read the address of the G structure for
// the current thread from the thread local storage area.
func (thread *Thread) GetG() (g *G, err error) {
gaddr, err := thread.getGVariable()
if err != nil {
return nil, err
}
g, err = gaddr.parseG()
if err == nil {
g.thread = thread
if loc, err := thread.Location(); err == nil {
g.CurrentLoc = *loc
}
}
return
}
// Stopped returns whether the thread is stopped at
// the operating system level. Actual implementation
// is OS dependant, look in OS thread file.
func (thread *Thread) Stopped() bool {
return thread.stopped()
}
// Halt stops this thread from executing. Actual
// implementation is OS dependant. Look in OS
// thread file.
func (thread *Thread) Halt() (err error) {
defer func() {
if err == nil {
thread.running = false
}
}()
if thread.Stopped() {
return
}
err = thread.halt()
return
}
// Scope returns the current EvalScope for this thread.
func (thread *Thread) Scope() (*EvalScope, error) {
locations, err := thread.Stacktrace(0)
if err != nil {
return nil, err
}
if len(locations) < 1 {
return nil, errors.New("could not decode first frame")
}
return locations[0].Scope(thread), nil
}
// SetCurrentBreakpoint sets the current breakpoint that this
// thread is stopped at as CurrentBreakpoint on the thread struct.
func (thread *Thread) SetCurrentBreakpoint() error {
thread.CurrentBreakpoint = nil
pc, err := thread.PC()
if err != nil {
return err
}
if bp, ok := thread.dbp.FindBreakpoint(pc); ok {
thread.CurrentBreakpoint = bp
if err = thread.SetPC(bp.Addr); err != nil {
return err
}
thread.BreakpointConditionMet, thread.BreakpointConditionError = bp.checkCondition(thread)
if thread.onTriggeredBreakpoint() {
if g, err := thread.GetG(); err == nil {
thread.CurrentBreakpoint.HitCount[g.ID]++
}
thread.CurrentBreakpoint.TotalHitCount++
}
}
return nil
}
func (thread *Thread) clearBreakpointState() {
thread.CurrentBreakpoint = nil
thread.BreakpointConditionMet = false
thread.BreakpointConditionError = nil
}
func (thread *Thread) onTriggeredBreakpoint() bool {
return (thread.CurrentBreakpoint != nil) && thread.BreakpointConditionMet
}
func (thread *Thread) onTriggeredInternalBreakpoint() bool {
return thread.onTriggeredBreakpoint() && thread.CurrentBreakpoint.Internal()
}
func (thread *Thread) onRuntimeBreakpoint() bool {
loc, err := thread.Location()
if err != nil {
return false
}
return loc.Fn != nil && loc.Fn.Name == "runtime.breakpoint"
}
// onNextGorutine returns true if this thread is on the goroutine requested by the current 'next' command
func (thread *Thread) onNextGoroutine() (bool, error) {
var bp *Breakpoint
for i := range thread.dbp.breakpoints {
if thread.dbp.breakpoints[i].Internal() {
bp = thread.dbp.breakpoints[i]
break
}
}
if bp == nil {
return false, nil
}
if bp.Kind == NextDeferBreakpoint {
// we just want to check the condition on the goroutine id here
bp.Kind = NextBreakpoint
defer func() {
bp.Kind = NextDeferBreakpoint
}()
}
return bp.checkCondition(thread)
}

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#include "threads_darwin.h"
int
write_memory(task_t task, mach_vm_address_t addr, void *d, mach_msg_type_number_t len) {
kern_return_t kret;
vm_region_submap_short_info_data_64_t info;
mach_msg_type_number_t count = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64;
mach_vm_size_t l = len;
mach_port_t objname;
if (len == 1) l = 2;
kret = mach_vm_region((vm_map_t)task, &(mach_vm_address_t){addr}, (mach_vm_size_t*)&l, VM_REGION_BASIC_INFO_64, (vm_region_info_t)&info, &count, &objname);
if (kret != KERN_SUCCESS) return -1;
// Set permissions to enable writting to this memory location
kret = mach_vm_protect(task, addr, len, FALSE, VM_PROT_WRITE|VM_PROT_COPY|VM_PROT_READ);
if (kret != KERN_SUCCESS) return -1;
kret = mach_vm_write((vm_map_t)task, addr, (vm_offset_t)d, len);
if (kret != KERN_SUCCESS) return -1;
// Restore virtual memory permissions
kret = mach_vm_protect(task, addr, len, FALSE, info.protection);
if (kret != KERN_SUCCESS) return -1;
return 0;
}
int
read_memory(task_t task, mach_vm_address_t addr, void *d, mach_msg_type_number_t len) {
kern_return_t kret;
pointer_t data;
mach_msg_type_number_t count;
kret = mach_vm_read((vm_map_t)task, addr, len, &data, &count);
if (kret != KERN_SUCCESS) return -1;
memcpy(d, (void *)data, len);
kret = vm_deallocate(task, data, len);
if (kret != KERN_SUCCESS) return -1;
return count;
}
kern_return_t
get_registers(mach_port_name_t task, x86_thread_state64_t *state) {
kern_return_t kret;
mach_msg_type_number_t stateCount = x86_THREAD_STATE64_COUNT;
// TODO(dp) - possible memory leak - vm_deallocate state
return thread_get_state(task, x86_THREAD_STATE64, (thread_state_t)state, &stateCount);
}
kern_return_t
get_fpu_registers(mach_port_name_t task, x86_float_state64_t *state) {
kern_return_t kret;
mach_msg_type_number_t stateCount = x86_FLOAT_STATE64_COUNT;
return thread_get_state(task, x86_FLOAT_STATE64, (thread_state_t)state, &stateCount);
}
kern_return_t
get_identity(mach_port_name_t task, thread_identifier_info_data_t *idinfo) {
mach_msg_type_number_t idinfoCount = THREAD_IDENTIFIER_INFO_COUNT;
return thread_info(task, THREAD_IDENTIFIER_INFO, (thread_info_t)idinfo, &idinfoCount);
}
kern_return_t
set_registers(mach_port_name_t task, x86_thread_state64_t *state) {
mach_msg_type_number_t stateCount = x86_THREAD_STATE64_COUNT;
return thread_set_state(task, x86_THREAD_STATE64, (thread_state_t)state, stateCount);
}
kern_return_t
set_pc(thread_act_t task, uint64_t pc) {
kern_return_t kret;
x86_thread_state64_t state;
mach_msg_type_number_t stateCount = x86_THREAD_STATE64_COUNT;
kret = thread_get_state(task, x86_THREAD_STATE64, (thread_state_t)&state, &stateCount);
if (kret != KERN_SUCCESS) return kret;
state.__rip = pc;
return thread_set_state(task, x86_THREAD_STATE64, (thread_state_t)&state, stateCount);
}
kern_return_t
single_step(thread_act_t thread) {
kern_return_t kret;
x86_thread_state64_t regs;
mach_msg_type_number_t count = x86_THREAD_STATE64_COUNT;
kret = thread_get_state(thread, x86_THREAD_STATE64, (thread_state_t)&regs, &count);
if (kret != KERN_SUCCESS) return kret;
// Set trap bit in rflags
regs.__rflags |= 0x100UL;
kret = thread_set_state(thread, x86_THREAD_STATE64, (thread_state_t)&regs, count);
if (kret != KERN_SUCCESS) return kret;
return resume_thread(thread);
}
kern_return_t
resume_thread(thread_act_t thread) {
kern_return_t kret;
struct thread_basic_info info;
unsigned int info_count = THREAD_BASIC_INFO_COUNT;
kret = thread_info((thread_t)thread, THREAD_BASIC_INFO, (thread_info_t)&info, &info_count);
if (kret != KERN_SUCCESS) return kret;
for (int i = 0; i < info.suspend_count; i++) {
kret = thread_resume(thread);
if (kret != KERN_SUCCESS) return kret;
}
return KERN_SUCCESS;
}
kern_return_t
clear_trap_flag(thread_act_t thread) {
kern_return_t kret;
x86_thread_state64_t regs;
mach_msg_type_number_t count = x86_THREAD_STATE64_COUNT;
kret = thread_get_state(thread, x86_THREAD_STATE64, (thread_state_t)&regs, &count);
if (kret != KERN_SUCCESS) return kret;
// Clear trap bit in rflags
regs.__rflags ^= 0x100UL;
return thread_set_state(thread, x86_THREAD_STATE64, (thread_state_t)&regs, count);
}
int
thread_blocked(thread_act_t thread) {
kern_return_t kret;
struct thread_basic_info info;
unsigned int info_count = THREAD_BASIC_INFO_COUNT;
kret = thread_info((thread_t)thread, THREAD_BASIC_INFO, (thread_info_t)&info, &info_count);
if (kret != KERN_SUCCESS) return -1;
return info.suspend_count;
}
int
num_running_threads(task_t task) {
kern_return_t kret;
thread_act_array_t list;
mach_msg_type_number_t count;
int i, n = 0;
kret = task_threads(task, &list, &count);
if (kret != KERN_SUCCESS) {
return -kret;
}
for (i = 0; i < count; ++i) {
thread_act_t thread = list[i];
struct thread_basic_info info;
unsigned int info_count = THREAD_BASIC_INFO_COUNT;
kret = thread_info((thread_t)thread, THREAD_BASIC_INFO, (thread_info_t)&info, &info_count);
if (kret == KERN_SUCCESS) {
if (info.suspend_count == 0) {
++n;
} else {
}
}
}
kret = vm_deallocate(mach_task_self(), (vm_address_t) list, count * sizeof(list[0]));
if (kret != KERN_SUCCESS) return -kret;
return n;
}

137
vendor/github.com/derekparker/delve/pkg/proc/threads_darwin.go generated vendored Normal file
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package proc
// #include "threads_darwin.h"
// #include "proc_darwin.h"
import "C"
import (
"fmt"
"unsafe"
sys "golang.org/x/sys/unix"
)
// WaitStatus is a synonym for the platform-specific WaitStatus
type WaitStatus sys.WaitStatus
// OSSpecificDetails holds information specific to the OSX/Darwin
// operating system / kernel.
type OSSpecificDetails struct {
threadAct C.thread_act_t
registers C.x86_thread_state64_t
exists bool
}
// ErrContinueThread is the error returned when a thread could not
// be continued.
var ErrContinueThread = fmt.Errorf("could not continue thread")
func (t *Thread) halt() (err error) {
kret := C.thread_suspend(t.os.threadAct)
if kret != C.KERN_SUCCESS {
errStr := C.GoString(C.mach_error_string(C.mach_error_t(kret)))
// check that the thread still exists before complaining
err2 := t.dbp.updateThreadList()
if err2 != nil {
err = fmt.Errorf("could not suspend thread %d %s (additionally could not update thread list: %v)", t.ID, errStr, err2)
return
}
if _, ok := t.dbp.threads[t.ID]; ok {
err = fmt.Errorf("could not suspend thread %d %s", t.ID, errStr)
return
}
}
return
}
func (t *Thread) singleStep() error {
kret := C.single_step(t.os.threadAct)
if kret != C.KERN_SUCCESS {
return fmt.Errorf("could not single step")
}
for {
twthread, err := t.dbp.trapWait(t.dbp.pid)
if err != nil {
return err
}
if twthread.ID == t.ID {
break
}
}
kret = C.clear_trap_flag(t.os.threadAct)
if kret != C.KERN_SUCCESS {
return fmt.Errorf("could not clear CPU trap flag")
}
return nil
}
func (t *Thread) resume() error {
t.running = true
// TODO(dp) set flag for ptrace stops
var err error
t.dbp.execPtraceFunc(func() { err = PtraceCont(t.dbp.pid, 0) })
if err == nil {
return nil
}
kret := C.resume_thread(t.os.threadAct)
if kret != C.KERN_SUCCESS {
return ErrContinueThread
}
return nil
}
func (t *Thread) blocked() bool {
// TODO(dp) cache the func pc to remove this lookup
pc, err := t.PC()
if err != nil {
return false
}
fn := t.dbp.goSymTable.PCToFunc(pc)
if fn == nil {
return false
}
switch fn.Name {
case "runtime.kevent", "runtime.mach_semaphore_wait", "runtime.usleep":
return true
default:
return false
}
}
func (t *Thread) stopped() bool {
return C.thread_blocked(t.os.threadAct) > C.int(0)
}
func (t *Thread) writeMemory(addr uintptr, data []byte) (int, error) {
if len(data) == 0 {
return 0, nil
}
var (
vmData = unsafe.Pointer(&data[0])
vmAddr = C.mach_vm_address_t(addr)
length = C.mach_msg_type_number_t(len(data))
)
if ret := C.write_memory(t.dbp.os.task, vmAddr, vmData, length); ret < 0 {
return 0, fmt.Errorf("could not write memory")
}
return len(data), nil
}
func (t *Thread) readMemory(addr uintptr, size int) ([]byte, error) {
if size == 0 {
return nil, nil
}
var (
buf = make([]byte, size)
vmData = unsafe.Pointer(&buf[0])
vmAddr = C.mach_vm_address_t(addr)
length = C.mach_msg_type_number_t(size)
)
ret := C.read_memory(t.dbp.os.task, vmAddr, vmData, length)
if ret < 0 {
return nil, fmt.Errorf("could not read memory")
}
return buf, nil
}

41
vendor/github.com/derekparker/delve/pkg/proc/threads_darwin.h generated vendored Normal file
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#include <stdlib.h>
#include <sys/types.h>
#include <mach/mach.h>
#include <mach/mach_vm.h>
#include <mach/thread_info.h>
int
write_memory(task_t, mach_vm_address_t, void *, mach_msg_type_number_t);
int
read_memory(task_t, mach_vm_address_t, void *, mach_msg_type_number_t);
kern_return_t
get_registers(mach_port_name_t, x86_thread_state64_t*);
kern_return_t
get_fpu_registers(mach_port_name_t, x86_float_state64_t *);
kern_return_t
set_pc(thread_act_t, uint64_t);
kern_return_t
single_step(thread_act_t);
kern_return_t
clear_trap_flag(thread_act_t);
kern_return_t
resume_thread(thread_act_t);
kern_return_t
set_registers(mach_port_name_t, x86_thread_state64_t*);
kern_return_t
get_identity(mach_port_name_t, thread_identifier_info_data_t *);
int
thread_blocked(thread_act_t thread);
int
num_running_threads(task_t task);

108
vendor/github.com/derekparker/delve/pkg/proc/threads_linux.go generated vendored Normal file
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package proc
import (
"fmt"
sys "golang.org/x/sys/unix"
)
type WaitStatus sys.WaitStatus
// OSSpecificDetails hold Linux specific
// process details.
type OSSpecificDetails struct {
registers sys.PtraceRegs
}
func (t *Thread) halt() (err error) {
err = sys.Tgkill(t.dbp.pid, t.ID, sys.SIGSTOP)
if err != nil {
err = fmt.Errorf("halt err %s on thread %d", err, t.ID)
return
}
_, _, err = t.dbp.wait(t.ID, 0)
if err != nil {
err = fmt.Errorf("wait err %s on thread %d", err, t.ID)
return
}
return
}
func (t *Thread) stopped() bool {
state := status(t.ID, t.dbp.os.comm)
return state == StatusTraceStop || state == StatusTraceStopT
}
func (t *Thread) resume() error {
return t.resumeWithSig(0)
}
func (t *Thread) resumeWithSig(sig int) (err error) {
t.running = true
t.dbp.execPtraceFunc(func() { err = PtraceCont(t.ID, sig) })
return
}
func (t *Thread) singleStep() (err error) {
for {
t.dbp.execPtraceFunc(func() { err = sys.PtraceSingleStep(t.ID) })
if err != nil {
return err
}
wpid, status, err := t.dbp.waitFast(t.ID)
if err != nil {
return err
}
if (status == nil || status.Exited()) && wpid == t.dbp.pid {
t.dbp.postExit()
rs := 0
if status != nil {
rs = status.ExitStatus()
}
return ProcessExitedError{Pid: t.dbp.pid, Status: rs}
}
if wpid == t.ID && status.StopSignal() == sys.SIGTRAP {
return nil
}
}
}
func (t *Thread) blocked() bool {
pc, _ := t.PC()
fn := t.dbp.goSymTable.PCToFunc(pc)
if fn != nil && ((fn.Name == "runtime.futex") || (fn.Name == "runtime.usleep") || (fn.Name == "runtime.clone")) {
return true
}
return false
}
func (t *Thread) saveRegisters() (Registers, error) {
var err error
t.dbp.execPtraceFunc(func() { err = sys.PtraceGetRegs(t.ID, &t.os.registers) })
if err != nil {
return nil, fmt.Errorf("could not save register contents")
}
return &Regs{&t.os.registers, nil}, nil
}
func (t *Thread) restoreRegisters() (err error) {
t.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(t.ID, &t.os.registers) })
return
}
func (t *Thread) writeMemory(addr uintptr, data []byte) (written int, err error) {
if len(data) == 0 {
return
}
t.dbp.execPtraceFunc(func() { written, err = sys.PtracePokeData(t.ID, addr, data) })
return
}
func (t *Thread) readMemory(addr uintptr, size int) (data []byte, err error) {
if size == 0 {
return
}
data = make([]byte, size)
t.dbp.execPtraceFunc(func() { _, err = sys.PtracePeekData(t.ID, addr, data) })
return
}

151
vendor/github.com/derekparker/delve/pkg/proc/threads_windows.go generated vendored Normal file
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package proc
import (
"syscall"
sys "golang.org/x/sys/windows"
)
// WaitStatus is a synonym for the platform-specific WaitStatus
type WaitStatus sys.WaitStatus
// OSSpecificDetails holds information specific to the Windows
// operating system / kernel.
type OSSpecificDetails struct {
hThread syscall.Handle
}
func (t *Thread) halt() (err error) {
// Ignore the request to halt. On Windows, all threads are halted
// on return from WaitForDebugEvent.
return nil
// TODO - This may not be correct in all usages of dbp.Halt. There
// are some callers who use dbp.Halt() to stop the process when it is not
// already broken on a debug event.
}
func (t *Thread) singleStep() error {
context := newCONTEXT()
context.ContextFlags = _CONTEXT_ALL
// Set the processor TRAP flag
err := _GetThreadContext(t.os.hThread, context)
if err != nil {
return err
}
context.EFlags |= 0x100
err = _SetThreadContext(t.os.hThread, context)
if err != nil {
return err
}
_, err = _ResumeThread(t.os.hThread)
if err != nil {
return err
}
for {
var tid, exitCode int
t.dbp.execPtraceFunc(func() {
tid, exitCode, err = t.dbp.waitForDebugEvent(waitBlocking | waitSuspendNewThreads)
})
if err != nil {
return err
}
if tid == 0 {
t.dbp.postExit()
return ProcessExitedError{Pid: t.dbp.pid, Status: exitCode}
}
if t.dbp.os.breakThread == t.ID {
break
}
t.dbp.execPtraceFunc(func() {
err = _ContinueDebugEvent(uint32(t.dbp.pid), uint32(t.dbp.os.breakThread), _DBG_CONTINUE)
})
}
_, err = _SuspendThread(t.os.hThread)
if err != nil {
return err
}
t.dbp.execPtraceFunc(func() {
err = _ContinueDebugEvent(uint32(t.dbp.pid), uint32(t.ID), _DBG_CONTINUE)
})
if err != nil {
return err
}
// Unset the processor TRAP flag
err = _GetThreadContext(t.os.hThread, context)
if err != nil {
return err
}
context.EFlags &= ^uint32(0x100)
return _SetThreadContext(t.os.hThread, context)
}
func (t *Thread) resume() error {
t.running = true
var err error
t.dbp.execPtraceFunc(func() {
//TODO: Note that we are ignoring the thread we were asked to continue and are continuing the
//thread that we last broke on.
err = _ContinueDebugEvent(uint32(t.dbp.pid), uint32(t.ID), _DBG_CONTINUE)
})
return err
}
func (t *Thread) blocked() bool {
// TODO: Probably incorrect - what are the runtime functions that
// indicate blocking on Windows?
pc, err := t.PC()
if err != nil {
return false
}
fn := t.dbp.goSymTable.PCToFunc(pc)
if fn == nil {
return false
}
switch fn.Name {
case "runtime.kevent", "runtime.usleep":
return true
default:
return false
}
}
func (t *Thread) stopped() bool {
// TODO: We are assuming that threads are always stopped
// during command execution.
return true
}
func (t *Thread) writeMemory(addr uintptr, data []byte) (int, error) {
var count uintptr
err := _WriteProcessMemory(t.dbp.os.hProcess, addr, &data[0], uintptr(len(data)), &count)
if err != nil {
return 0, err
}
return int(count), nil
}
func (t *Thread) readMemory(addr uintptr, size int) ([]byte, error) {
if size == 0 {
return nil, nil
}
var count uintptr
buf := make([]byte, size)
err := _ReadProcessMemory(t.dbp.os.hProcess, addr, &buf[0], uintptr(size), &count)
if err != nil {
return nil, err
}
return buf[:count], nil
}

755
vendor/github.com/derekparker/delve/pkg/proc/types.go generated vendored Normal file
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package proc
import (
"bytes"
"errors"
"fmt"
"go/ast"
"go/constant"
"go/token"
"reflect"
"sort"
"strconv"
"strings"
"sync"
"unsafe"
"github.com/derekparker/delve/pkg/dwarf/reader"
"golang.org/x/debug/dwarf"
)
// The kind field in runtime._type is a reflect.Kind value plus
// some extra flags defined here.
// See equivalent declaration in $GOROOT/src/reflect/type.go
const (
kindDirectIface = 1 << 5
kindGCProg = 1 << 6 // Type.gc points to GC program
kindNoPointers = 1 << 7
kindMask = (1 << 5) - 1
)
// Value of tflag field in runtime._type.
// See $GOROOT/reflect/type.go for a description of these flags.
const (
tflagUncommon = 1 << 0
tflagExtraStar = 1 << 1
tflagNamed = 1 << 2
)
// Do not call this function directly it isn't able to deal correctly with package paths
func (dbp *Process) findType(name string) (dwarf.Type, error) {
off, found := dbp.types[name]
if !found {
return nil, reader.TypeNotFoundErr
}
return dbp.dwarf.Type(off)
}
func (dbp *Process) pointerTo(typ dwarf.Type) dwarf.Type {
return &dwarf.PtrType{dwarf.CommonType{int64(dbp.arch.PtrSize()), "*" + typ.Common().Name, reflect.Ptr, 0}, typ}
}
func (dbp *Process) findTypeExpr(expr ast.Expr) (dwarf.Type, error) {
dbp.loadPackageMap()
if lit, islit := expr.(*ast.BasicLit); islit && lit.Kind == token.STRING {
// Allow users to specify type names verbatim as quoted
// string. Useful as a catch-all workaround for cases where we don't
// parse/serialize types correctly or can not resolve package paths.
typn, _ := strconv.Unquote(lit.Value)
return dbp.findType(typn)
}
dbp.expandPackagesInType(expr)
if snode, ok := expr.(*ast.StarExpr); ok {
// Pointer types only appear in the dwarf informations when
// a pointer to the type is used in the target program, here
// we create a pointer type on the fly so that the user can
// specify a pointer to any variable used in the target program
ptyp, err := dbp.findTypeExpr(snode.X)
if err != nil {
return nil, err
}
return dbp.pointerTo(ptyp), nil
}
return dbp.findType(exprToString(expr))
}
func complexType(typename string) bool {
for _, ch := range typename {
switch ch {
case '*', '[', '<', '{', '(', ' ':
return true
}
}
return false
}
func (dbp *Process) loadPackageMap() error {
if dbp.packageMap != nil {
return nil
}
dbp.packageMap = map[string]string{}
reader := dbp.DwarfReader()
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
return err
}
if entry.Tag != dwarf.TagTypedef && entry.Tag != dwarf.TagBaseType && entry.Tag != dwarf.TagClassType && entry.Tag != dwarf.TagStructType {
continue
}
typename, ok := entry.Val(dwarf.AttrName).(string)
if !ok || complexType(typename) {
continue
}
dot := strings.LastIndex(typename, ".")
if dot < 0 {
continue
}
path := typename[:dot]
slash := strings.LastIndex(path, "/")
if slash < 0 || slash+1 >= len(path) {
continue
}
name := path[slash+1:]
dbp.packageMap[name] = path
}
return nil
}
type sortFunctionsDebugInfoByLowpc []functionDebugInfo
func (v sortFunctionsDebugInfoByLowpc) Len() int { return len(v) }
func (v sortFunctionsDebugInfoByLowpc) Less(i, j int) bool { return v[i].lowpc < v[j].lowpc }
func (v sortFunctionsDebugInfoByLowpc) Swap(i, j int) {
temp := v[i]
v[i] = v[j]
v[j] = temp
}
func (dbp *Process) loadDebugInfoMaps(wg *sync.WaitGroup) {
defer wg.Done()
dbp.types = make(map[string]dwarf.Offset)
dbp.functions = []functionDebugInfo{}
reader := dbp.DwarfReader()
for entry, err := reader.Next(); entry != nil; entry, err = reader.Next() {
if err != nil {
break
}
switch entry.Tag {
case dwarf.TagArrayType, dwarf.TagBaseType, dwarf.TagClassType, dwarf.TagStructType, dwarf.TagUnionType, dwarf.TagConstType, dwarf.TagVolatileType, dwarf.TagRestrictType, dwarf.TagEnumerationType, dwarf.TagPointerType, dwarf.TagSubroutineType, dwarf.TagTypedef, dwarf.TagUnspecifiedType:
name, ok := entry.Val(dwarf.AttrName).(string)
if !ok {
continue
}
if _, exists := dbp.types[name]; !exists {
dbp.types[name] = entry.Offset
}
case dwarf.TagSubprogram:
lowpc, ok := entry.Val(dwarf.AttrLowpc).(uint64)
if !ok {
continue
}
highpc, ok := entry.Val(dwarf.AttrHighpc).(uint64)
if !ok {
continue
}
dbp.functions = append(dbp.functions, functionDebugInfo{lowpc, highpc, entry.Offset})
}
}
sort.Sort(sortFunctionsDebugInfoByLowpc(dbp.functions))
}
func (dbp *Process) findFunctionDebugInfo(pc uint64) (dwarf.Offset, error) {
i := sort.Search(len(dbp.functions), func(i int) bool {
fn := dbp.functions[i]
return pc <= fn.lowpc || (fn.lowpc <= pc && pc < fn.highpc)
})
if i != len(dbp.functions) {
fn := dbp.functions[i]
if fn.lowpc <= pc && pc < fn.highpc {
return fn.offset, nil
}
}
return 0, errors.New("unable to find function context")
}
func (dbp *Process) expandPackagesInType(expr ast.Expr) {
switch e := expr.(type) {
case *ast.ArrayType:
dbp.expandPackagesInType(e.Elt)
case *ast.ChanType:
dbp.expandPackagesInType(e.Value)
case *ast.FuncType:
for i := range e.Params.List {
dbp.expandPackagesInType(e.Params.List[i].Type)
}
if e.Results != nil {
for i := range e.Results.List {
dbp.expandPackagesInType(e.Results.List[i].Type)
}
}
case *ast.MapType:
dbp.expandPackagesInType(e.Key)
dbp.expandPackagesInType(e.Value)
case *ast.ParenExpr:
dbp.expandPackagesInType(e.X)
case *ast.SelectorExpr:
switch x := e.X.(type) {
case *ast.Ident:
if path, ok := dbp.packageMap[x.Name]; ok {
x.Name = path
}
default:
dbp.expandPackagesInType(e.X)
}
case *ast.StarExpr:
dbp.expandPackagesInType(e.X)
default:
// nothing to do
}
}
type nameOfRuntimeTypeEntry struct {
typename string
kind int64
}
// Returns the type name of the type described in _type.
// _type is a non-loaded Variable pointing to runtime._type struct in the target.
// The returned string is in the format that's used in DWARF data
func nameOfRuntimeType(_type *Variable) (typename string, kind int64, err error) {
if e, ok := _type.dbp.nameOfRuntimeType[_type.Addr]; ok {
return e.typename, e.kind, nil
}
var tflag int64
if tflagField := _type.loadFieldNamed("tflag"); tflagField != nil && tflagField.Value != nil {
tflag, _ = constant.Int64Val(tflagField.Value)
}
if kindField := _type.loadFieldNamed("kind"); kindField != nil && kindField.Value != nil {
kind, _ = constant.Int64Val(kindField.Value)
}
// Named types are defined by a 'type' expression, everything else
// (for example pointers to named types) are not considered named.
if tflag&tflagNamed != 0 {
typename, err = nameOfNamedRuntimeType(_type, kind, tflag)
return typename, kind, err
} else {
typename, err = nameOfUnnamedRuntimeType(_type, kind, tflag)
return typename, kind, err
}
_type.dbp.nameOfRuntimeType[_type.Addr] = nameOfRuntimeTypeEntry{typename, kind}
return typename, kind, nil
}
// The layout of a runtime._type struct is as follows:
//
// <runtime._type><kind specific struct fields><runtime.uncommontype>
//
// with the 'uncommon type struct' being optional
//
// For named types first we extract the type name from the 'str'
// field in the runtime._type struct.
// Then we prepend the package path from the runtime.uncommontype
// struct, when it exists.
//
// To find out the memory address of the runtime.uncommontype struct
// we first cast the Variable pointing to the runtime._type struct
// to a struct specific to the type's kind (for example, if the type
// being described is a slice type the variable will be specialized
// to a runtime.slicetype).
func nameOfNamedRuntimeType(_type *Variable, kind, tflag int64) (typename string, err error) {
var strOff int64
if strField := _type.loadFieldNamed("str"); strField != nil && strField.Value != nil {
strOff, _ = constant.Int64Val(strField.Value)
} else {
return "", errors.New("could not find str field")
}
// The following code is adapted from reflect.(*rtype).Name.
// For a description of how memory is organized for type names read
// the comment to 'type name struct' in $GOROOT/src/reflect/type.go
typename, _, _, err = _type.dbp.resolveNameOff(_type.Addr, uintptr(strOff))
if err != nil {
return "", err
}
if tflag&tflagExtraStar != 0 {
typename = typename[1:]
}
if i := strings.Index(typename, "."); i >= 0 {
typename = typename[i+1:]
} else {
return typename, nil
}
// The following code is adapted from reflect.(*rtype).PkgPath in
// $GOROOT/src/reflect/type.go
_type, err = specificRuntimeType(_type, kind)
if err != nil {
return "", err
}
if ut := uncommon(_type, tflag); ut != nil {
if pkgPathField := ut.loadFieldNamed("pkgpath"); pkgPathField != nil && pkgPathField.Value != nil {
pkgPathOff, _ := constant.Int64Val(pkgPathField.Value)
pkgPath, _, _, err := _type.dbp.resolveNameOff(_type.Addr, uintptr(pkgPathOff))
if err != nil {
return "", err
}
typename = pkgPath + "." + typename
}
}
return typename, nil
}
func nameOfUnnamedRuntimeType(_type *Variable, kind, tflag int64) (string, error) {
_type, err := specificRuntimeType(_type, kind)
if err != nil {
return "", err
}
// The types referred to here are defined in $GOROOT/src/runtime/type.go
switch reflect.Kind(kind & kindMask) {
case reflect.Array:
var len int64
if lenField := _type.loadFieldNamed("len"); lenField != nil && lenField.Value != nil {
len, _ = constant.Int64Val(lenField.Value)
}
elemname, err := fieldToType(_type, "elem")
if err != nil {
return "", err
}
return fmt.Sprintf("[%d]%s", len, elemname), nil
case reflect.Chan:
elemname, err := fieldToType(_type, "elem")
if err != nil {
return "", err
}
return "chan " + elemname, nil
case reflect.Func:
return nameOfFuncRuntimeType(_type, tflag, true)
case reflect.Interface:
return nameOfInterfaceRuntimeType(_type, kind, tflag)
case reflect.Map:
keyname, err := fieldToType(_type, "key")
if err != nil {
return "", err
}
elemname, err := fieldToType(_type, "elem")
if err != nil {
return "", err
}
return "map[" + keyname + "]" + elemname, nil
case reflect.Ptr:
elemname, err := fieldToType(_type, "elem")
if err != nil {
return "", err
}
return "*" + elemname, nil
case reflect.Slice:
elemname, err := fieldToType(_type, "elem")
if err != nil {
return "", err
}
return "[]" + elemname, nil
case reflect.Struct:
return nameOfStructRuntimeType(_type, kind, tflag)
default:
return nameOfNamedRuntimeType(_type, kind, tflag)
}
}
// Returns the expression describing an anonymous function type.
// A runtime.functype is followed by a runtime.uncommontype
// (optional) and then by an array of pointers to runtime._type,
// one for each input and output argument.
func nameOfFuncRuntimeType(_type *Variable, tflag int64, anonymous bool) (string, error) {
rtyp, err := _type.dbp.findType("runtime._type")
if err != nil {
return "", err
}
prtyp := _type.dbp.pointerTo(rtyp)
uadd := _type.RealType.Common().ByteSize
if ut := uncommon(_type, tflag); ut != nil {
uadd += ut.RealType.Common().ByteSize
}
var inCount, outCount int64
if inCountField := _type.loadFieldNamed("inCount"); inCountField != nil && inCountField.Value != nil {
inCount, _ = constant.Int64Val(inCountField.Value)
}
if outCountField := _type.loadFieldNamed("outCount"); outCountField != nil && outCountField.Value != nil {
outCount, _ = constant.Int64Val(outCountField.Value)
// only the lowest 15 bits of outCount are used, rest are flags
outCount = outCount & (1<<15 - 1)
}
cursortyp := _type.newVariable("", _type.Addr+uintptr(uadd), prtyp)
var buf bytes.Buffer
if anonymous {
buf.WriteString("func(")
} else {
buf.WriteString("(")
}
for i := int64(0); i < inCount; i++ {
argtype := cursortyp.maybeDereference()
cursortyp.Addr += uintptr(_type.dbp.arch.PtrSize())
argtypename, _, err := nameOfRuntimeType(argtype)
if err != nil {
return "", err
}
buf.WriteString(argtypename)
if i != inCount-1 {
buf.WriteString(", ")
}
}
buf.WriteString(")")
switch outCount {
case 0:
// nothing to do
case 1:
buf.WriteString(" ")
argtype := cursortyp.maybeDereference()
argtypename, _, err := nameOfRuntimeType(argtype)
if err != nil {
return "", err
}
buf.WriteString(argtypename)
default:
buf.WriteString(" (")
for i := int64(0); i < outCount; i++ {
argtype := cursortyp.maybeDereference()
cursortyp.Addr += uintptr(_type.dbp.arch.PtrSize())
argtypename, _, err := nameOfRuntimeType(argtype)
if err != nil {
return "", err
}
buf.WriteString(argtypename)
if i != inCount-1 {
buf.WriteString(", ")
}
}
buf.WriteString(")")
}
return buf.String(), nil
}
func nameOfInterfaceRuntimeType(_type *Variable, kind, tflag int64) (string, error) {
var buf bytes.Buffer
buf.WriteString("interface {")
methods, _ := _type.structMember("methods")
methods.loadArrayValues(0, LoadConfig{false, 1, 0, 4096, -1})
if methods.Unreadable != nil {
return "", nil
}
if len(methods.Children) == 0 {
buf.WriteString("}")
return buf.String(), nil
} else {
buf.WriteString(" ")
}
for i, im := range methods.Children {
var methodname, methodtype string
for i := range im.Children {
switch im.Children[i].Name {
case "name":
nameoff, _ := constant.Int64Val(im.Children[i].Value)
var err error
methodname, _, _, err = _type.dbp.resolveNameOff(_type.Addr, uintptr(nameoff))
if err != nil {
return "", err
}
case "typ":
typeoff, _ := constant.Int64Val(im.Children[i].Value)
typ, err := _type.dbp.resolveTypeOff(_type.Addr, uintptr(typeoff))
if err != nil {
return "", err
}
typ, err = specificRuntimeType(typ, int64(reflect.Func))
if err != nil {
return "", err
}
var tflag int64
if tflagField := typ.loadFieldNamed("tflag"); tflagField != nil && tflagField.Value != nil {
tflag, _ = constant.Int64Val(tflagField.Value)
}
methodtype, err = nameOfFuncRuntimeType(typ, tflag, false)
if err != nil {
return "", err
}
}
}
buf.WriteString(methodname)
buf.WriteString(methodtype)
if i != len(methods.Children)-1 {
buf.WriteString("; ")
} else {
buf.WriteString(" }")
}
}
return buf.String(), nil
}
func nameOfStructRuntimeType(_type *Variable, kind, tflag int64) (string, error) {
var buf bytes.Buffer
buf.WriteString("struct {")
fields, _ := _type.structMember("fields")
fields.loadArrayValues(0, LoadConfig{false, 1, 0, 4096, -1})
if fields.Unreadable != nil {
return "", fields.Unreadable
}
if len(fields.Children) == 0 {
buf.WriteString("}")
return buf.String(), nil
} else {
buf.WriteString(" ")
}
for i, field := range fields.Children {
var fieldname, fieldtypename string
var typeField *Variable
for i := range field.Children {
switch field.Children[i].Name {
case "name":
nameoff, _ := constant.Int64Val(field.Children[i].Value)
var err error
fieldname, _, _, err = _type.dbp.loadName(uintptr(nameoff))
if err != nil {
return "", err
}
case "typ":
typeField = field.Children[i].maybeDereference()
var err error
fieldtypename, _, err = nameOfRuntimeType(typeField)
if err != nil {
return "", err
}
}
}
// fieldname will be the empty string for anonymous fields
if fieldname != "" {
buf.WriteString(fieldname)
buf.WriteString(" ")
}
buf.WriteString(fieldtypename)
if i != len(fields.Children)-1 {
buf.WriteString("; ")
} else {
buf.WriteString(" }")
}
}
return buf.String(), nil
}
func fieldToType(_type *Variable, fieldName string) (string, error) {
typeField, err := _type.structMember(fieldName)
if err != nil {
return "", err
}
typeField = typeField.maybeDereference()
typename, _, err := nameOfRuntimeType(typeField)
return typename, err
}
func specificRuntimeType(_type *Variable, kind int64) (*Variable, error) {
rtyp, err := _type.dbp.findType("runtime._type")
if err != nil {
return nil, err
}
prtyp := _type.dbp.pointerTo(rtyp)
uintptrtyp, err := _type.dbp.findType("uintptr")
if err != nil {
return nil, err
}
uint32typ := &dwarf.UintType{dwarf.BasicType{CommonType: dwarf.CommonType{ByteSize: 4, Name: "uint32"}}}
uint16typ := &dwarf.UintType{dwarf.BasicType{CommonType: dwarf.CommonType{ByteSize: 2, Name: "uint16"}}}
newStructType := func(name string, sz uintptr) *dwarf.StructType {
return &dwarf.StructType{dwarf.CommonType{Name: name, ByteSize: int64(sz)}, name, "struct", nil, false}
}
appendField := func(typ *dwarf.StructType, name string, fieldtype dwarf.Type, off uintptr) {
typ.Field = append(typ.Field, &dwarf.StructField{Name: name, ByteOffset: int64(off), Type: fieldtype})
}
newSliceType := func(elemtype dwarf.Type) *dwarf.SliceType {
r := newStructType("[]"+elemtype.Common().Name, uintptr(3*uintptrtyp.Size()))
appendField(r, "array", _type.dbp.pointerTo(elemtype), 0)
appendField(r, "len", uintptrtyp, uintptr(uintptrtyp.Size()))
appendField(r, "cap", uintptrtyp, uintptr(2*uintptrtyp.Size()))
return &dwarf.SliceType{StructType: *r, ElemType: elemtype}
}
var typ *dwarf.StructType
type rtype struct {
size uintptr
ptrdata uintptr
hash uint32 // hash of type; avoids computation in hash tables
tflag uint8 // extra type information flags
align uint8 // alignment of variable with this type
fieldAlign uint8 // alignment of struct field with this type
kind uint8 // enumeration for C
alg *byte // algorithm table
gcdata *byte // garbage collection data
str int32 // string form
ptrToThis int32 // type for pointer to this type, may be zero
}
switch reflect.Kind(kind & kindMask) {
case reflect.Array:
// runtime.arraytype
var a struct {
rtype
elem *rtype // array element type
slice *rtype // slice type
len uintptr
}
typ = newStructType("runtime.arraytype", unsafe.Sizeof(a))
appendField(typ, "elem", prtyp, unsafe.Offsetof(a.elem))
appendField(typ, "len", uintptrtyp, unsafe.Offsetof(a.len))
case reflect.Chan:
// runtime.chantype
var a struct {
rtype
elem *rtype // channel element type
dir uintptr // channel direction (ChanDir)
}
typ = newStructType("runtime.chantype", unsafe.Sizeof(a))
appendField(typ, "elem", prtyp, unsafe.Offsetof(a.elem))
case reflect.Func:
// runtime.functype
var a struct {
rtype `reflect:"func"`
inCount uint16
outCount uint16 // top bit is set if last input parameter is ...
}
typ = newStructType("runtime.functype", unsafe.Sizeof(a))
appendField(typ, "inCount", uint16typ, unsafe.Offsetof(a.inCount))
appendField(typ, "outCount", uint16typ, unsafe.Offsetof(a.outCount))
case reflect.Interface:
// runtime.imethod
type imethod struct {
name uint32 // name of method
typ uint32 // .(*FuncType) underneath
}
var im imethod
// runtime.interfacetype
var a struct {
rtype `reflect:"interface"`
pkgPath *byte // import path
methods []imethod // sorted by hash
}
imethodtype := newStructType("runtime.imethod", unsafe.Sizeof(im))
appendField(imethodtype, "name", uint32typ, unsafe.Offsetof(im.name))
appendField(imethodtype, "typ", uint32typ, unsafe.Offsetof(im.typ))
typ = newStructType("runtime.interfacetype", unsafe.Sizeof(a))
appendField(typ, "methods", newSliceType(imethodtype), unsafe.Offsetof(a.methods))
case reflect.Map:
// runtime.maptype
var a struct {
rtype `reflect:"map"`
key *rtype // map key type
elem *rtype // map element (value) type
bucket *rtype // internal bucket structure
hmap *rtype // internal map header
keysize uint8 // size of key slot
indirectkey uint8 // store ptr to key instead of key itself
valuesize uint8 // size of value slot
indirectvalue uint8 // store ptr to value instead of value itself
bucketsize uint16 // size of bucket
reflexivekey bool // true if k==k for all keys
needkeyupdate bool // true if we need to update key on an overwrite
}
typ = newStructType("runtime.maptype", unsafe.Sizeof(a))
appendField(typ, "key", prtyp, unsafe.Offsetof(a.key))
appendField(typ, "elem", prtyp, unsafe.Offsetof(a.elem))
case reflect.Ptr:
// runtime.ptrtype
var a struct {
rtype `reflect:"ptr"`
elem *rtype // pointer element (pointed at) type
}
typ = newStructType("runtime.ptrtype", unsafe.Sizeof(a))
appendField(typ, "elem", prtyp, unsafe.Offsetof(a.elem))
case reflect.Slice:
// runtime.slicetype
var a struct {
rtype `reflect:"slice"`
elem *rtype // slice element type
}
typ = newStructType("runtime.slicetype", unsafe.Sizeof(a))
appendField(typ, "elem", prtyp, unsafe.Offsetof(a.elem))
case reflect.Struct:
// runtime.structtype
type structField struct {
name *byte // name is empty for embedded fields
typ *rtype // type of field
offset uintptr // byte offset of field within struct
}
var sf structField
var a struct {
rtype `reflect:"struct"`
pkgPath *byte
fields []structField // sorted by offset
}
fieldtype := newStructType("runtime.structtype", unsafe.Sizeof(sf))
appendField(fieldtype, "name", uintptrtyp, unsafe.Offsetof(sf.name))
appendField(fieldtype, "typ", prtyp, unsafe.Offsetof(sf.typ))
typ = newStructType("runtime.structtype", unsafe.Sizeof(a))
appendField(typ, "fields", newSliceType(fieldtype), unsafe.Offsetof(a.fields))
default:
return _type, nil
}
return _type.newVariable(_type.Name, _type.Addr, typ), nil
}
// See reflect.(*rtype).uncommon in $GOROOT/src/reflect/type.go
func uncommon(_type *Variable, tflag int64) *Variable {
if tflag&tflagUncommon == 0 {
return nil
}
typ, err := _type.dbp.findType("runtime.uncommontype")
if err != nil {
return nil
}
return _type.newVariable(_type.Name, _type.Addr+uintptr(_type.RealType.Size()), typ)
}

1723
vendor/github.com/derekparker/delve/pkg/proc/variables.go generated vendored Normal file
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181
vendor/github.com/derekparker/delve/pkg/proc/zsyscall_windows.go generated vendored Normal file
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@ -0,0 +1,181 @@
// MACHINE GENERATED BY 'go generate' COMMAND; DO NOT EDIT
package proc
import (
"syscall"
"unsafe"
)
var _ unsafe.Pointer
var (
modntdll = syscall.NewLazyDLL("ntdll.dll")
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
procNtQueryInformationThread = modntdll.NewProc("NtQueryInformationThread")
procGetThreadContext = modkernel32.NewProc("GetThreadContext")
procSetThreadContext = modkernel32.NewProc("SetThreadContext")
procSuspendThread = modkernel32.NewProc("SuspendThread")
procResumeThread = modkernel32.NewProc("ResumeThread")
procContinueDebugEvent = modkernel32.NewProc("ContinueDebugEvent")
procWriteProcessMemory = modkernel32.NewProc("WriteProcessMemory")
procReadProcessMemory = modkernel32.NewProc("ReadProcessMemory")
procDebugBreakProcess = modkernel32.NewProc("DebugBreakProcess")
procWaitForDebugEvent = modkernel32.NewProc("WaitForDebugEvent")
procDebugActiveProcess = modkernel32.NewProc("DebugActiveProcess")
procDebugActiveProcessStop = modkernel32.NewProc("DebugActiveProcessStop")
procQueryFullProcessImageNameW = modkernel32.NewProc("QueryFullProcessImageNameW")
)
func _NtQueryInformationThread(threadHandle syscall.Handle, infoclass int32, info uintptr, infolen uint32, retlen *uint32) (status _NTSTATUS) {
r0, _, _ := syscall.Syscall6(procNtQueryInformationThread.Addr(), 5, uintptr(threadHandle), uintptr(infoclass), uintptr(info), uintptr(infolen), uintptr(unsafe.Pointer(retlen)), 0)
status = _NTSTATUS(r0)
return
}
func _GetThreadContext(thread syscall.Handle, context *_CONTEXT) (err error) {
r1, _, e1 := syscall.Syscall(procGetThreadContext.Addr(), 2, uintptr(thread), uintptr(unsafe.Pointer(context)), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _SetThreadContext(thread syscall.Handle, context *_CONTEXT) (err error) {
r1, _, e1 := syscall.Syscall(procSetThreadContext.Addr(), 2, uintptr(thread), uintptr(unsafe.Pointer(context)), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _SuspendThread(threadid syscall.Handle) (prevsuspcount uint32, err error) {
r0, _, e1 := syscall.Syscall(procSuspendThread.Addr(), 1, uintptr(threadid), 0, 0)
prevsuspcount = uint32(r0)
if prevsuspcount == 0xffffffff {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _ResumeThread(threadid syscall.Handle) (prevsuspcount uint32, err error) {
r0, _, e1 := syscall.Syscall(procResumeThread.Addr(), 1, uintptr(threadid), 0, 0)
prevsuspcount = uint32(r0)
if prevsuspcount == 0xffffffff {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _ContinueDebugEvent(processid uint32, threadid uint32, continuestatus uint32) (err error) {
r1, _, e1 := syscall.Syscall(procContinueDebugEvent.Addr(), 3, uintptr(processid), uintptr(threadid), uintptr(continuestatus))
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _WriteProcessMemory(process syscall.Handle, baseaddr uintptr, buffer *byte, size uintptr, byteswritten *uintptr) (err error) {
r1, _, e1 := syscall.Syscall6(procWriteProcessMemory.Addr(), 5, uintptr(process), uintptr(baseaddr), uintptr(unsafe.Pointer(buffer)), uintptr(size), uintptr(unsafe.Pointer(byteswritten)), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _ReadProcessMemory(process syscall.Handle, baseaddr uintptr, buffer *byte, size uintptr, bytesread *uintptr) (err error) {
r1, _, e1 := syscall.Syscall6(procReadProcessMemory.Addr(), 5, uintptr(process), uintptr(baseaddr), uintptr(unsafe.Pointer(buffer)), uintptr(size), uintptr(unsafe.Pointer(bytesread)), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _DebugBreakProcess(process syscall.Handle) (err error) {
r1, _, e1 := syscall.Syscall(procDebugBreakProcess.Addr(), 1, uintptr(process), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _WaitForDebugEvent(debugevent *_DEBUG_EVENT, milliseconds uint32) (err error) {
r1, _, e1 := syscall.Syscall(procWaitForDebugEvent.Addr(), 2, uintptr(unsafe.Pointer(debugevent)), uintptr(milliseconds), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _DebugActiveProcess(processid uint32) (err error) {
r1, _, e1 := syscall.Syscall(procDebugActiveProcess.Addr(), 1, uintptr(processid), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _DebugActiveProcessStop(processid uint32) (err error) {
r1, _, e1 := syscall.Syscall(procDebugActiveProcessStop.Addr(), 1, uintptr(processid), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func _QueryFullProcessImageName(process syscall.Handle, flags uint32, exename *uint16, size *uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procQueryFullProcessImageNameW.Addr(), 4, uintptr(process), uintptr(flags), uintptr(unsafe.Pointer(exename)), uintptr(unsafe.Pointer(size)), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}

84
vendor/github.com/derekparker/delve/pkg/target/target.go generated vendored Normal file
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@ -0,0 +1,84 @@
package target
import (
"debug/gosym"
"go/ast"
"time"
"github.com/derekparker/delve/pkg/proc"
)
// Target represents the target of the debugger. This
// target could be a system process, core file, etc.
type Interface interface {
Info
ProcessManipulation
BreakpointManipulation
VariableEval
}
// Info is an interface that provides general information on the target.
type Info interface {
Pid() int
Exited() bool
Running() bool
BinaryInfo
ThreadInfo
GoroutineInfo
}
// BinaryInfo is an interface for accessing information on the binary file
// and the contents of binary sections.
type BinaryInfo interface {
LastModified() time.Time
Sources() map[string]*gosym.Obj
FindFileLocation(fileName string, lineNumber int) (uint64, error)
FindFunctionLocation(funcName string, firstLine bool, lineOffset int) (uint64, error)
Funcs() []gosym.Func
Types() ([]string, error)
PCToLine(uint64) (string, int, *gosym.Func)
FirstPCAfterPrologue(fn *gosym.Func, sameline bool) (uint64, error)
}
// ThreadInfo is an interface for getting information on active threads
// in the process.
type ThreadInfo interface {
Threads() map[int]*proc.Thread
CurrentThread() *proc.Thread
}
// GoroutineInfo is an interface for getting information on running goroutines.
type GoroutineInfo interface {
GoroutinesInfo() ([]*proc.G, error)
SelectedGoroutine() *proc.G
FindGoroutine(int) (*proc.G, error)
}
// ProcessManipulation is an interface for changing the execution state of a process.
type ProcessManipulation interface {
Continue() error
Next() error
Step() error
StepOut() error
StepInstruction() error
SwitchThread(int) error
SwitchGoroutine(int) error
RequestManualStop() error
Halt() error
Kill() error
Detach(bool) error
}
// BreakpointManipulation is an interface for managing breakpoints.
type BreakpointManipulation interface {
Breakpoints() map[uint64]*proc.Breakpoint
SetBreakpoint(addr uint64, kind proc.BreakpointKind, cond ast.Expr) (*proc.Breakpoint, error)
ClearBreakpoint(addr uint64) (*proc.Breakpoint, error)
ClearInternalBreakpoints() error
}
// VariableEval is an interface for dealing with eval scopes.
type VariableEval interface {
ConvertEvalScope(gid, frame int) (*proc.EvalScope, error)
}

1426
vendor/github.com/derekparker/delve/pkg/terminal/command.go generated vendored Normal file
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31
vendor/github.com/derekparker/delve/pkg/terminal/disasmprint.go generated vendored Normal file
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package terminal
import (
"bufio"
"fmt"
"github.com/derekparker/delve/service/api"
"io"
"path/filepath"
"text/tabwriter"
)
func DisasmPrint(dv api.AsmInstructions, out io.Writer) {
bw := bufio.NewWriter(out)
defer bw.Flush()
if len(dv) > 0 && dv[0].Loc.Function != nil {
fmt.Fprintf(bw, "TEXT %s(SB) %s\n", dv[0].Loc.Function.Name, dv[0].Loc.File)
}
tw := tabwriter.NewWriter(bw, 1, 8, 1, '\t', 0)
defer tw.Flush()
for _, inst := range dv {
atbp := ""
if inst.Breakpoint {
atbp = "*"
}
atpc := ""
if inst.AtPC {
atpc = "=>"
}
fmt.Fprintf(tw, "%s\t%s:%d\t%#x%s\t%x\t%s\n", atpc, filepath.Base(inst.Loc.File), inst.Loc.Line, inst.Loc.PC, atbp, inst.Bytes, inst.Text)
}
}

54
vendor/github.com/derekparker/delve/pkg/terminal/docgen.go generated vendored Normal file
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package terminal
import (
"fmt"
"io"
"strings"
)
func replaceDocPath(s string) string {
const docpath = "$GOPATH/src/github.com/derekparker/delve/"
for {
start := strings.Index(s, docpath)
if start < 0 {
return s
}
var end int
for end = start + len(docpath); end < len(s); end++ {
if s[end] == ' ' {
break
}
}
text := s[start+len(docpath) : end]
s = s[:start] + fmt.Sprintf("[%s](//github.com/derekparker/delve/tree/master/%s)", text, text) + s[end:]
}
}
func (commands *Commands) WriteMarkdown(w io.Writer) {
fmt.Fprintf(w, "# Commands\n\n")
fmt.Fprintf(w, "Command | Description\n")
fmt.Fprintf(w, "--------|------------\n")
for _, cmd := range commands.cmds {
h := cmd.helpMsg
if idx := strings.Index(h, "\n"); idx >= 0 {
h = h[:idx]
}
fmt.Fprintf(w, "[%s](#%s) | %s\n", cmd.aliases[0], cmd.aliases[0], h)
}
fmt.Fprintf(w, "\n")
for _, cmd := range commands.cmds {
fmt.Fprintf(w, "## %s\n%s\n\n", cmd.aliases[0], replaceDocPath(cmd.helpMsg))
if len(cmd.aliases) > 1 {
fmt.Fprintf(w, "Aliases:")
for _, alias := range cmd.aliases[1:] {
fmt.Fprintf(w, " %s", alias)
}
fmt.Fprintf(w, "\n")
}
fmt.Fprintf(w, "\n")
}
}

251
vendor/github.com/derekparker/delve/pkg/terminal/terminal.go generated vendored Normal file
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package terminal
import (
"fmt"
"io"
"os"
"os/signal"
"runtime"
"strings"
"syscall"
"github.com/peterh/liner"
"github.com/derekparker/delve/pkg/config"
"github.com/derekparker/delve/service"
)
const (
historyFile string = ".dbg_history"
terminalBlueEscapeCode string = "\033[34m"
terminalResetEscapeCode string = "\033[0m"
)
// Term represents the terminal running dlv.
type Term struct {
client service.Client
conf *config.Config
prompt string
line *liner.State
cmds *Commands
dumb bool
stdout io.Writer
InitFile string
}
// New returns a new Term.
func New(client service.Client, conf *config.Config) *Term {
cmds := DebugCommands(client)
if conf != nil && conf.Aliases != nil {
cmds.Merge(conf.Aliases)
}
var w io.Writer
dumb := strings.ToLower(os.Getenv("TERM")) == "dumb"
if dumb {
w = os.Stdout
} else {
w = getColorableWriter()
}
return &Term{
client: client,
conf: conf,
prompt: "(dlv) ",
line: liner.NewLiner(),
cmds: cmds,
dumb: dumb,
stdout: w,
}
}
// Close returns the terminal to its previous mode.
func (t *Term) Close() {
t.line.Close()
}
// Run begins running dlv in the terminal.
func (t *Term) Run() (int, error) {
defer t.Close()
// Send the debugger a halt command on SIGINT
ch := make(chan os.Signal)
signal.Notify(ch, syscall.SIGINT)
go func() {
for range ch {
fmt.Printf("received SIGINT, stopping process (will not forward signal)")
_, err := t.client.Halt()
if err != nil {
fmt.Fprintf(os.Stderr, "%v", err)
}
}
}()
t.line.SetCompleter(func(line string) (c []string) {
for _, cmd := range t.cmds.cmds {
for _, alias := range cmd.aliases {
if strings.HasPrefix(alias, strings.ToLower(line)) {
c = append(c, alias)
}
}
}
return
})
fullHistoryFile, err := config.GetConfigFilePath(historyFile)
if err != nil {
fmt.Printf("Unable to load history file: %v.", err)
}
f, err := os.Open(fullHistoryFile)
if err != nil {
f, err = os.Create(fullHistoryFile)
if err != nil {
fmt.Printf("Unable to open history file: %v. History will not be saved for this session.", err)
}
}
t.line.ReadHistory(f)
f.Close()
fmt.Println("Type 'help' for list of commands.")
if t.InitFile != "" {
err := t.cmds.executeFile(t, t.InitFile)
if err != nil {
fmt.Fprintf(os.Stderr, "Error executing init file: %s\n", err)
}
}
for {
cmdstr, err := t.promptForInput()
if err != nil {
if err == io.EOF {
fmt.Println("exit")
return t.handleExit()
}
return 1, fmt.Errorf("Prompt for input failed.\n")
}
cmdstr, args := parseCommand(cmdstr)
if err := t.cmds.Call(cmdstr, args, t); err != nil {
if _, ok := err.(ExitRequestError); ok {
return t.handleExit()
}
// The type information gets lost in serialization / de-serialization,
// so we do a string compare on the error message to see if the process
// has exited, or if the command actually failed.
if strings.Contains(err.Error(), "exited") {
fmt.Fprintln(os.Stderr, err.Error())
} else {
fmt.Fprintf(os.Stderr, "Command failed: %s\n", err)
}
}
}
}
// Println prints a line to the terminal.
func (t *Term) Println(prefix, str string) {
if !t.dumb {
prefix = fmt.Sprintf("%s%s%s", terminalBlueEscapeCode, prefix, terminalResetEscapeCode)
}
fmt.Fprintf(t.stdout, "%s%s\n", prefix, str)
}
// Substitues directory to source file.
//
// Ensures that only directory is substitued, for example:
// substitute from `/dir/subdir`, substitute to `/new`
// for file path `/dir/subdir/file` will return file path `/new/file`.
// for file path `/dir/subdir-2/file` substitution will not be applied.
//
// If more than one substitution rule is defined, the rules are applied
// in the order they are defined, first rule that matches is used for
// substitution.
func (t *Term) substitutePath(path string) string {
path = crossPlatformPath(path)
if t.conf == nil {
return path
}
separator := string(os.PathSeparator)
for _, r := range t.conf.SubstitutePath {
from := crossPlatformPath(r.From)
to := r.To
if !strings.HasSuffix(from, separator) {
from = from + separator
}
if !strings.HasSuffix(to, separator) {
to = to + separator
}
if strings.HasPrefix(path, from) {
return strings.Replace(path, from, to, 1)
}
}
return path
}
func crossPlatformPath(path string) string {
if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
return strings.ToLower(path)
}
return path
}
func (t *Term) promptForInput() (string, error) {
l, err := t.line.Prompt(t.prompt)
if err != nil {
return "", err
}
l = strings.TrimSuffix(l, "\n")
if l != "" {
t.line.AppendHistory(l)
}
return l, nil
}
func (t *Term) handleExit() (int, error) {
fullHistoryFile, err := config.GetConfigFilePath(historyFile)
if err != nil {
fmt.Println("Error saving history file:", err)
} else {
if f, err := os.OpenFile(fullHistoryFile, os.O_RDWR, 0666); err == nil {
_, err = t.line.WriteHistory(f)
if err != nil {
fmt.Println("readline history error:", err)
}
f.Close()
}
}
s, err := t.client.GetState()
if err != nil {
return 1, err
}
if !s.Exited {
kill := true
if t.client.AttachedToExistingProcess() {
answer, err := t.line.Prompt("Would you like to kill the process? [Y/n] ")
if err != nil {
return 2, io.EOF
}
answer = strings.ToLower(strings.TrimSpace(answer))
kill = (answer != "n" && answer != "no")
}
if err := t.client.Detach(kill); err != nil {
return 1, err
}
}
return 0, nil
}
func parseCommand(cmdstr string) (string, string) {
vals := strings.SplitN(cmdstr, " ", 2)
if len(vals) == 1 {
return vals[0], ""
}
return vals[0], strings.TrimSpace(vals[1])
}

14
vendor/github.com/derekparker/delve/pkg/terminal/terminal_other.go generated vendored Normal file
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@ -0,0 +1,14 @@
// +build !windows
package terminal
import (
"io"
"os"
)
// getColorableWriter simply returns stdout on
// *nix machines.
func getColorableWriter() io.Writer {
return os.Stdout
}

35
vendor/github.com/derekparker/delve/pkg/terminal/terminal_windows.go generated vendored Normal file
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@ -0,0 +1,35 @@
package terminal
import (
"io"
"os"
"strings"
"syscall"
"github.com/mattn/go-colorable"
)
// getColorableWriter will return a writer that is capable
// of interpreting ANSI escape codes for terminal colors.
func getColorableWriter() io.Writer {
if strings.ToLower(os.Getenv("ConEmuANSI")) == "on" {
// The ConEmu terminal is installed. Use it.
return os.Stdout
}
const ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004
h, err := syscall.GetStdHandle(syscall.STD_OUTPUT_HANDLE)
if err != nil {
return os.Stdout
}
var m uint32
err = syscall.GetConsoleMode(h, &m)
if err != nil {
return os.Stdout
}
if m&ENABLE_VIRTUAL_TERMINAL_PROCESSING != 0 {
return os.Stdout
}
return colorable.NewColorableStdout()
}

25
vendor/github.com/derekparker/delve/pkg/version/version.go generated vendored Normal file
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@ -0,0 +1,25 @@
package version
import "fmt"
// Version represents the current version of Delve.
type Version struct {
Major string
Minor string
Patch string
Metadata string
Build string
}
var (
// DelveVersion is the current version of Delve.
DelveVersion = Version{Major: "0", Minor: "12", Patch: "1", Metadata: ""}
)
func (v Version) String() string {
ver := fmt.Sprintf("Version: %s.%s.%s", v.Major, v.Minor, v.Patch)
if v.Metadata != "" {
ver += "-" + v.Metadata
}
return fmt.Sprintf("%s\nBuild: %s", ver, v.Build)
}

276
vendor/github.com/derekparker/delve/service/api/conversions.go generated vendored Normal file
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package api
import (
"bytes"
"debug/gosym"
"go/constant"
"go/printer"
"go/token"
"reflect"
"strconv"
"github.com/derekparker/delve/pkg/proc"
"golang.org/x/debug/dwarf"
)
// ConvertBreakpoint converts from a proc.Breakpoint to
// an api.Breakpoint.
func ConvertBreakpoint(bp *proc.Breakpoint) *Breakpoint {
b := &Breakpoint{
Name: bp.Name,
ID: bp.ID,
FunctionName: bp.FunctionName,
File: bp.File,
Line: bp.Line,
Addr: bp.Addr,
Tracepoint: bp.Tracepoint,
Stacktrace: bp.Stacktrace,
Goroutine: bp.Goroutine,
Variables: bp.Variables,
LoadArgs: LoadConfigFromProc(bp.LoadArgs),
LoadLocals: LoadConfigFromProc(bp.LoadLocals),
TotalHitCount: bp.TotalHitCount,
}
b.HitCount = map[string]uint64{}
for idx := range bp.HitCount {
b.HitCount[strconv.Itoa(idx)] = bp.HitCount[idx]
}
var buf bytes.Buffer
printer.Fprint(&buf, token.NewFileSet(), bp.Cond)
b.Cond = buf.String()
return b
}
// ConvertThread converts a proc.Thread into an
// api thread.
func ConvertThread(th *proc.Thread) *Thread {
var (
function *Function
file string
line int
pc uint64
gid int
)
loc, err := th.Location()
if err == nil {
pc = loc.PC
file = loc.File
line = loc.Line
function = ConvertFunction(loc.Fn)
}
var bp *Breakpoint
if th.CurrentBreakpoint != nil && th.BreakpointConditionMet {
bp = ConvertBreakpoint(th.CurrentBreakpoint)
}
if g, _ := th.GetG(); g != nil {
gid = g.ID
}
return &Thread{
ID: th.ID,
PC: pc,
File: file,
Line: line,
Function: function,
GoroutineID: gid,
Breakpoint: bp,
}
}
func prettyTypeName(typ dwarf.Type) string {
if typ == nil {
return ""
}
if typ.Common().Name != "" {
return typ.Common().Name
}
r := typ.String()
if r == "*void" {
return "unsafe.Pointer"
}
return r
}
func convertFloatValue(v *proc.Variable, sz int) string {
switch v.FloatSpecial {
case proc.FloatIsPosInf:
return "+Inf"
case proc.FloatIsNegInf:
return "-Inf"
case proc.FloatIsNaN:
return "NaN"
}
f, _ := constant.Float64Val(v.Value)
return strconv.FormatFloat(f, 'f', -1, sz)
}
// ConvertVar converts from proc.Variable to api.Variable.
func ConvertVar(v *proc.Variable) *Variable {
r := Variable{
Addr: v.Addr,
OnlyAddr: v.OnlyAddr,
Name: v.Name,
Kind: v.Kind,
Len: v.Len,
Cap: v.Cap,
}
r.Type = prettyTypeName(v.DwarfType)
r.RealType = prettyTypeName(v.RealType)
if v.Unreadable != nil {
r.Unreadable = v.Unreadable.Error()
}
if v.Value != nil {
switch v.Kind {
case reflect.Float32:
r.Value = convertFloatValue(v, 32)
case reflect.Float64:
r.Value = convertFloatValue(v, 64)
case reflect.String, reflect.Func:
r.Value = constant.StringVal(v.Value)
default:
r.Value = v.Value.String()
}
}
switch v.Kind {
case reflect.Complex64:
r.Children = make([]Variable, 2)
r.Len = 2
real, _ := constant.Float64Val(constant.Real(v.Value))
imag, _ := constant.Float64Val(constant.Imag(v.Value))
r.Children[0].Name = "real"
r.Children[0].Kind = reflect.Float32
r.Children[0].Value = strconv.FormatFloat(real, 'f', -1, 32)
r.Children[1].Name = "imaginary"
r.Children[1].Kind = reflect.Float32
r.Children[1].Value = strconv.FormatFloat(imag, 'f', -1, 32)
case reflect.Complex128:
r.Children = make([]Variable, 2)
r.Len = 2
real, _ := constant.Float64Val(constant.Real(v.Value))
imag, _ := constant.Float64Val(constant.Imag(v.Value))
r.Children[0].Name = "real"
r.Children[0].Kind = reflect.Float64
r.Children[0].Value = strconv.FormatFloat(real, 'f', -1, 64)
r.Children[1].Name = "imaginary"
r.Children[1].Kind = reflect.Float64
r.Children[1].Value = strconv.FormatFloat(imag, 'f', -1, 64)
default:
r.Children = make([]Variable, len(v.Children))
for i := range v.Children {
r.Children[i] = *ConvertVar(&v.Children[i])
}
}
return &r
}
// ConvertFunction converts from gosym.Func to
// api.Function.
func ConvertFunction(fn *gosym.Func) *Function {
if fn == nil {
return nil
}
return &Function{
Name: fn.Name,
Type: fn.Type,
Value: fn.Value,
GoType: fn.GoType,
}
}
// ConvertGoroutine converts from proc.G to api.Goroutine.
func ConvertGoroutine(g *proc.G) *Goroutine {
th := g.Thread()
tid := 0
if th != nil {
tid = th.ID
}
return &Goroutine{
ID: g.ID,
CurrentLoc: ConvertLocation(g.CurrentLoc),
UserCurrentLoc: ConvertLocation(g.UserCurrent()),
GoStatementLoc: ConvertLocation(g.Go()),
ThreadID: tid,
}
}
// ConvertLocation converts from proc.Location to api.Location.
func ConvertLocation(loc proc.Location) Location {
return Location{
PC: loc.PC,
File: loc.File,
Line: loc.Line,
Function: ConvertFunction(loc.Fn),
}
}
func ConvertAsmInstruction(inst proc.AsmInstruction, text string) AsmInstruction {
var destloc *Location
if inst.DestLoc != nil {
r := ConvertLocation(*inst.DestLoc)
destloc = &r
}
return AsmInstruction{
Loc: ConvertLocation(inst.Loc),
DestLoc: destloc,
Text: text,
Bytes: inst.Bytes,
Breakpoint: inst.Breakpoint,
AtPC: inst.AtPC,
}
}
func LoadConfigToProc(cfg *LoadConfig) *proc.LoadConfig {
if cfg == nil {
return nil
}
return &proc.LoadConfig{
cfg.FollowPointers,
cfg.MaxVariableRecurse,
cfg.MaxStringLen,
cfg.MaxArrayValues,
cfg.MaxStructFields,
}
}
func LoadConfigFromProc(cfg *proc.LoadConfig) *LoadConfig {
if cfg == nil {
return nil
}
return &LoadConfig{
cfg.FollowPointers,
cfg.MaxVariableRecurse,
cfg.MaxStringLen,
cfg.MaxArrayValues,
cfg.MaxStructFields,
}
}
func ConvertRegisters(in []proc.Register) (out []Register) {
out = make([]Register, len(in))
for i := range in {
out[i] = Register{in[i].Name, in[i].Value}
}
return
}

323
vendor/github.com/derekparker/delve/service/api/prettyprint.go generated vendored Normal file
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@ -0,0 +1,323 @@
package api
import (
"bytes"
"fmt"
"io"
"reflect"
)
const (
// strings longer than this will cause slices, arrays and structs to be printed on multiple lines when newlines is enabled
maxShortStringLen = 7
// string used for one indentation level (when printing on multiple lines)
indentString = "\t"
)
// SinglelineString returns a representation of v on a single line.
func (v *Variable) SinglelineString() string {
var buf bytes.Buffer
v.writeTo(&buf, true, false, true, "")
return buf.String()
}
// MultilineString returns a representation of v on multiple lines.
func (v *Variable) MultilineString(indent string) string {
var buf bytes.Buffer
v.writeTo(&buf, true, true, true, indent)
return buf.String()
}
func (v *Variable) writeTo(buf io.Writer, top, newlines, includeType bool, indent string) {
if v.Unreadable != "" {
fmt.Fprintf(buf, "(unreadable %s)", v.Unreadable)
return
}
if !top && v.Addr == 0 {
if includeType && v.Type != "void" {
fmt.Fprintf(buf, "%s nil", v.Type)
} else {
fmt.Fprintf(buf, "nil")
}
return
}
switch v.Kind {
case reflect.Slice:
v.writeSliceTo(buf, newlines, includeType, indent)
case reflect.Array:
v.writeArrayTo(buf, newlines, includeType, indent)
case reflect.Ptr:
if v.Type == "" {
fmt.Fprintf(buf, "nil")
} else if v.Children[0].OnlyAddr && v.Children[0].Addr != 0 {
fmt.Fprintf(buf, "(%s)(0x%x)", v.Type, v.Children[0].Addr)
} else {
fmt.Fprintf(buf, "*")
v.Children[0].writeTo(buf, false, newlines, includeType, indent)
}
case reflect.UnsafePointer:
fmt.Fprintf(buf, "unsafe.Pointer(0x%x)", v.Children[0].Addr)
case reflect.String:
v.writeStringTo(buf)
case reflect.Chan:
if newlines {
v.writeStructTo(buf, newlines, includeType, indent)
} else {
if len(v.Children) == 0 {
fmt.Fprintf(buf, "%s nil", v.Type)
} else {
fmt.Fprintf(buf, "%s %s/%s", v.Type, v.Children[0].Value, v.Children[1].Value)
}
}
case reflect.Struct:
v.writeStructTo(buf, newlines, includeType, indent)
case reflect.Interface:
if includeType {
if v.Children[0].Kind == reflect.Invalid {
fmt.Fprintf(buf, "%s ", v.Type)
if v.Children[0].Addr == 0 {
fmt.Fprintf(buf, "nil")
return
}
} else {
fmt.Fprintf(buf, "%s(%s) ", v.Type, v.Children[0].Type)
}
}
data := v.Children[0]
if data.Kind == reflect.Ptr {
if len(data.Children) == 0 {
fmt.Fprintf(buf, "...")
} else if data.Children[0].Addr == 0 {
fmt.Fprintf(buf, "nil")
} else if data.Children[0].OnlyAddr {
fmt.Fprintf(buf, "0x%x", v.Children[0].Addr)
} else {
v.Children[0].writeTo(buf, false, newlines, !includeType, indent)
}
} else {
v.Children[0].writeTo(buf, false, newlines, !includeType, indent)
}
case reflect.Map:
v.writeMapTo(buf, newlines, includeType, indent)
case reflect.Func:
if v.Value == "" {
fmt.Fprintf(buf, "nil")
} else {
fmt.Fprintf(buf, "%s", v.Value)
}
case reflect.Complex64, reflect.Complex128:
fmt.Fprintf(buf, "(%s + %si)", v.Children[0].Value, v.Children[1].Value)
default:
if v.Value != "" {
buf.Write([]byte(v.Value))
} else {
fmt.Fprintf(buf, "(unknown %s)", v.Kind)
}
}
}
func (v *Variable) writeStringTo(buf io.Writer) {
s := v.Value
if len(s) != int(v.Len) {
s = fmt.Sprintf("%s...+%d more", s, int(v.Len)-len(s))
}
fmt.Fprintf(buf, "%q", s)
}
func (v *Variable) writeSliceTo(buf io.Writer, newlines, includeType bool, indent string) {
if includeType {
fmt.Fprintf(buf, "%s len: %d, cap: %d, ", v.Type, v.Len, v.Cap)
}
v.writeSliceOrArrayTo(buf, newlines, indent)
}
func (v *Variable) writeArrayTo(buf io.Writer, newlines, includeType bool, indent string) {
if includeType {
fmt.Fprintf(buf, "%s ", v.Type)
}
v.writeSliceOrArrayTo(buf, newlines, indent)
}
func (v *Variable) writeStructTo(buf io.Writer, newlines, includeType bool, indent string) {
if int(v.Len) != len(v.Children) && len(v.Children) == 0 {
fmt.Fprintf(buf, "(*%s)(0x%x)", v.Type, v.Addr)
return
}
if includeType {
fmt.Fprintf(buf, "%s ", v.Type)
}
nl := v.shouldNewlineStruct(newlines)
fmt.Fprintf(buf, "{")
for i := range v.Children {
if nl {
fmt.Fprintf(buf, "\n%s%s", indent, indentString)
}
fmt.Fprintf(buf, "%s: ", v.Children[i].Name)
v.Children[i].writeTo(buf, false, nl, true, indent+indentString)
if i != len(v.Children)-1 || nl {
fmt.Fprintf(buf, ",")
if !nl {
fmt.Fprintf(buf, " ")
}
}
}
if len(v.Children) != int(v.Len) {
if nl {
fmt.Fprintf(buf, "\n%s%s", indent, indentString)
} else {
fmt.Fprintf(buf, ",")
}
fmt.Fprintf(buf, "...+%d more", int(v.Len)-len(v.Children))
}
fmt.Fprintf(buf, "}")
}
func (v *Variable) writeMapTo(buf io.Writer, newlines, includeType bool, indent string) {
if includeType {
fmt.Fprintf(buf, "%s ", v.Type)
}
nl := newlines && (len(v.Children) > 0)
fmt.Fprintf(buf, "[")
for i := 0; i < len(v.Children); i += 2 {
key := &v.Children[i]
value := &v.Children[i+1]
if nl {
fmt.Fprintf(buf, "\n%s%s", indent, indentString)
}
key.writeTo(buf, false, false, false, indent+indentString)
fmt.Fprintf(buf, ": ")
value.writeTo(buf, false, nl, false, indent+indentString)
if i != len(v.Children)-1 || nl {
fmt.Fprintf(buf, ", ")
}
}
if len(v.Children)/2 != int(v.Len) {
if len(v.Children) != 0 {
if nl {
fmt.Fprintf(buf, "\n%s%s", indent, indentString)
} else {
fmt.Fprintf(buf, ",")
}
fmt.Fprintf(buf, "...+%d more", int(v.Len)-(len(v.Children)/2))
} else {
fmt.Fprintf(buf, "...")
}
}
if nl {
fmt.Fprintf(buf, "\n%s", indent)
}
fmt.Fprintf(buf, "]")
}
func (v *Variable) shouldNewlineArray(newlines bool) bool {
if !newlines || len(v.Children) == 0 {
return false
}
kind, hasptr := (&v.Children[0]).recursiveKind()
switch kind {
case reflect.Slice, reflect.Array, reflect.Struct, reflect.Map, reflect.Interface:
return true
case reflect.String:
if hasptr {
return true
}
for i := range v.Children {
if len(v.Children[i].Value) > maxShortStringLen {
return true
}
}
return false
default:
return false
}
}
func (v *Variable) recursiveKind() (reflect.Kind, bool) {
hasptr := false
var kind reflect.Kind
for {
kind = v.Kind
if kind == reflect.Ptr {
hasptr = true
v = &(v.Children[0])
} else {
break
}
}
return kind, hasptr
}
func (v *Variable) shouldNewlineStruct(newlines bool) bool {
if !newlines || len(v.Children) == 0 {
return false
}
for i := range v.Children {
kind, hasptr := (&v.Children[i]).recursiveKind()
switch kind {
case reflect.Slice, reflect.Array, reflect.Struct, reflect.Map, reflect.Interface:
return true
case reflect.String:
if hasptr {
return true
}
if len(v.Children[i].Value) > maxShortStringLen {
return true
}
}
}
return false
}
func (v *Variable) writeSliceOrArrayTo(buf io.Writer, newlines bool, indent string) {
nl := v.shouldNewlineArray(newlines)
fmt.Fprintf(buf, "[")
for i := range v.Children {
if nl {
fmt.Fprintf(buf, "\n%s%s", indent, indentString)
}
v.Children[i].writeTo(buf, false, nl, false, indent+indentString)
if i != len(v.Children)-1 || nl {
fmt.Fprintf(buf, ",")
}
}
if len(v.Children) != int(v.Len) {
if len(v.Children) != 0 {
if nl {
fmt.Fprintf(buf, "\n%s%s", indent, indentString)
} else {
fmt.Fprintf(buf, ",")
}
fmt.Fprintf(buf, "...+%d more", int(v.Len)-len(v.Children))
} else {
fmt.Fprintf(buf, "...")
}
}
if nl {
fmt.Fprintf(buf, "\n%s", indent)
}
fmt.Fprintf(buf, "]")
}

320
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package api
import (
"bytes"
"errors"
"fmt"
"reflect"
"strconv"
"unicode"
"github.com/derekparker/delve/pkg/proc"
)
var NotExecutableErr = proc.NotExecutableErr
// DebuggerState represents the current context of the debugger.
type DebuggerState struct {
// CurrentThread is the currently selected debugger thread.
CurrentThread *Thread `json:"currentThread,omitempty"`
// SelectedGoroutine is the currently selected goroutine
SelectedGoroutine *Goroutine `json:"currentGoroutine,omitempty"`
// List of all the process threads
Threads []*Thread
// NextInProgress indicates that a next or step operation was interrupted by another breakpoint
// or a manual stop and is waiting to complete.
// While NextInProgress is set further requests for next or step may be rejected.
// Either execute continue until NextInProgress is false or call CancelNext
NextInProgress bool
// Exited indicates whether the debugged process has exited.
Exited bool `json:"exited"`
ExitStatus int `json:"exitStatus"`
// Filled by RPCClient.Continue, indicates an error
Err error `json:"-"`
}
// Breakpoint addresses a location at which process execution may be
// suspended.
type Breakpoint struct {
// ID is a unique identifier for the breakpoint.
ID int `json:"id"`
// User defined name of the breakpoint
Name string `json:"name"`
// Addr is the address of the breakpoint.
Addr uint64 `json:"addr"`
// File is the source file for the breakpoint.
File string `json:"file"`
// Line is a line in File for the breakpoint.
Line int `json:"line"`
// FunctionName is the name of the function at the current breakpoint, and
// may not always be available.
FunctionName string `json:"functionName,omitempty"`
// Breakpoint condition
Cond string
// tracepoint flag
Tracepoint bool `json:"continue"`
// retrieve goroutine information
Goroutine bool `json:"goroutine"`
// number of stack frames to retrieve
Stacktrace int `json:"stacktrace"`
// expressions to evaluate
Variables []string `json:"variables,omitempty"`
// LoadArgs requests loading function arguments when the breakpoint is hit
LoadArgs *LoadConfig
// LoadLocals requests loading function locals when the breakpoint is hit
LoadLocals *LoadConfig
// number of times a breakpoint has been reached in a certain goroutine
HitCount map[string]uint64 `json:"hitCount"`
// number of times a breakpoint has been reached
TotalHitCount uint64 `json:"totalHitCount"`
}
func ValidBreakpointName(name string) error {
if _, err := strconv.Atoi(name); err == nil {
return errors.New("breakpoint name can not be a number")
}
for _, ch := range name {
if !(unicode.IsLetter(ch) || unicode.IsDigit(ch)) {
return fmt.Errorf("invalid character in breakpoint name '%c'", ch)
}
}
return nil
}
// Thread is a thread within the debugged process.
type Thread struct {
// ID is a unique identifier for the thread.
ID int `json:"id"`
// PC is the current program counter for the thread.
PC uint64 `json:"pc"`
// File is the file for the program counter.
File string `json:"file"`
// Line is the line number for the program counter.
Line int `json:"line"`
// Function is function information at the program counter. May be nil.
Function *Function `json:"function,omitempty"`
// ID of the goroutine running on this thread
GoroutineID int `json:"goroutineID"`
// Breakpoint this thread is stopped at
Breakpoint *Breakpoint `json:"breakPoint,omitempty"`
// Informations requested by the current breakpoint
BreakpointInfo *BreakpointInfo `json:"breakPointInfo,omitrempty"`
}
type Location struct {
PC uint64 `json:"pc"`
File string `json:"file"`
Line int `json:"line"`
Function *Function `json:"function,omitempty"`
}
type Stackframe struct {
Location
Locals []Variable
Arguments []Variable
}
func (frame *Stackframe) Var(name string) *Variable {
for i := range frame.Locals {
if frame.Locals[i].Name == name {
return &frame.Locals[i]
}
}
for i := range frame.Arguments {
if frame.Arguments[i].Name == name {
return &frame.Arguments[i]
}
}
return nil
}
// Function represents thread-scoped function information.
type Function struct {
// Name is the function name.
Name string `json:"name"`
Value uint64 `json:"value"`
Type byte `json:"type"`
GoType uint64 `json:"goType"`
}
// Variable describes a variable.
type Variable struct {
// Name of the variable or struct member
Name string `json:"name"`
// Address of the variable or struct member
Addr uintptr `json:"addr"`
// Only the address field is filled (result of evaluating expressions like &<expr>)
OnlyAddr bool `json:"onlyAddr"`
// Go type of the variable
Type string `json:"type"`
// Type of the variable after resolving any typedefs
RealType string `json:"realType"`
Kind reflect.Kind `json:"kind"`
//Strings have their length capped at proc.maxArrayValues, use Len for the real length of a string
//Function variables will store the name of the function in this field
Value string `json:"value"`
// Number of elements in an array or a slice, number of keys for a map, number of struct members for a struct, length of strings
Len int64 `json:"len"`
// Cap value for slices
Cap int64 `json:"cap"`
// Array and slice elements, member fields of structs, key/value pairs of maps, value of complex numbers
// The Name field in this slice will always be the empty string except for structs (when it will be the field name) and for complex numbers (when it will be "real" and "imaginary")
// For maps each map entry will have to items in this slice, even numbered items will represent map keys and odd numbered items will represent their values
// This field's length is capped at proc.maxArrayValues for slices and arrays and 2*proc.maxArrayValues for maps, in the circumnstances where the cap takes effect len(Children) != Len
// The other length cap applied to this field is related to maximum recursion depth, when the maximum recursion depth is reached this field is left empty, contrary to the previous one this cap also applies to structs (otherwise structs will always have all their member fields returned)
Children []Variable `json:"children"`
// Unreadable addresses will have this field set
Unreadable string `json:"unreadable"`
}
// LoadConfig describes how to load values from target's memory
type LoadConfig struct {
// FollowPointers requests pointers to be automatically dereferenced.
FollowPointers bool
// MaxVariableRecurse is how far to recurse when evaluating nested types.
MaxVariableRecurse int
// MaxStringLen is the maximum number of bytes read from a string
MaxStringLen int
// MaxArrayValues is the maximum number of elements read from an array, a slice or a map.
MaxArrayValues int
// MaxStructFields is the maximum number of fields read from a struct, -1 will read all fields.
MaxStructFields int
}
// Goroutine represents the information relevant to Delve from the runtime's
// internal G structure.
type Goroutine struct {
// ID is a unique identifier for the goroutine.
ID int `json:"id"`
// Current location of the goroutine
CurrentLoc Location `json:"currentLoc"`
// Current location of the goroutine, excluding calls inside runtime
UserCurrentLoc Location `json:"userCurrentLoc"`
// Location of the go instruction that started this goroutine
GoStatementLoc Location `json:"goStatementLoc"`
// ID of the associated thread for running goroutines
ThreadID int `json:"threadID"`
}
// DebuggerCommand is a command which changes the debugger's execution state.
type DebuggerCommand struct {
// Name is the command to run.
Name string `json:"name"`
// ThreadID is used to specify which thread to use with the SwitchThread
// command.
ThreadID int `json:"threadID,omitempty"`
// GoroutineID is used to specify which thread to use with the SwitchGoroutine
// command.
GoroutineID int `json:"goroutineID,omitempty"`
}
// Informations about the current breakpoint
type BreakpointInfo struct {
Stacktrace []Stackframe `json:"stacktrace,omitempty"`
Goroutine *Goroutine `json:"goroutine,omitempty"`
Variables []Variable `json:"variables,omitempty"`
Arguments []Variable `json:"arguments,omitempty"`
Locals []Variable `json:"locals,omitempty"`
}
type EvalScope struct {
GoroutineID int
Frame int
}
const (
// Continue resumes process execution.
Continue = "continue"
// Step continues to next source line, entering function calls.
Step = "step"
// StepOut continues to the return address of the current function
StepOut = "stepOut"
// SingleStep continues for exactly 1 cpu instruction.
StepInstruction = "stepInstruction"
// Next continues to the next source line, not entering function calls.
Next = "next"
// SwitchThread switches the debugger's current thread context.
SwitchThread = "switchThread"
// SwitchGoroutine switches the debugger's current thread context to the thread running the specified goroutine
SwitchGoroutine = "switchGoroutine"
// Halt suspends the process.
Halt = "halt"
)
type AssemblyFlavour int
const (
GNUFlavour = AssemblyFlavour(proc.GNUFlavour)
IntelFlavour = AssemblyFlavour(proc.IntelFlavour)
)
// AsmInstruction represents one assembly instruction at some address
type AsmInstruction struct {
// Loc is the location of this instruction
Loc Location
// Destination of CALL instructions
DestLoc *Location
// Text is the formatted representation of the instruction
Text string
// Bytes is the instruction as read from memory
Bytes []byte
// If Breakpoint is true a breakpoint is set at this instruction
Breakpoint bool
// In AtPC is true this is the instruction the current thread is stopped at
AtPC bool
}
type AsmInstructions []AsmInstruction
type GetVersionIn struct {
}
type GetVersionOut struct {
DelveVersion string
APIVersion int
}
type SetAPIVersionIn struct {
APIVersion int
}
type SetAPIVersionOut struct {
}
type Register struct {
Name string
Value string
}
type Registers []Register
func (regs Registers) String() string {
maxlen := 0
for _, reg := range regs {
if n := len(reg.Name); n > maxlen {
maxlen = n
}
}
var buf bytes.Buffer
for _, reg := range regs {
fmt.Fprintf(&buf, "%*s = %s\n", maxlen, reg.Name, reg.Value)
}
return buf.String()
}
type DiscardedBreakpoint struct {
Breakpoint *Breakpoint
Reason string
}

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vendor/github.com/derekparker/delve/service/client.go generated vendored Normal file
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package service
import (
"time"
"github.com/derekparker/delve/service/api"
)
// Client represents a debugger service client. All client methods are
// synchronous.
type Client interface {
// Returns the pid of the process we are debugging.
ProcessPid() int
// LastModified returns the time that the process' executable was modified.
LastModified() time.Time
// Detach detaches the debugger, optionally killing the process.
Detach(killProcess bool) error
// Restarts program.
Restart() ([]api.DiscardedBreakpoint, error)
// GetState returns the current debugger state.
GetState() (*api.DebuggerState, error)
// Continue resumes process execution.
Continue() <-chan *api.DebuggerState
// Next continues to the next source line, not entering function calls.
Next() (*api.DebuggerState, error)
// Step continues to the next source line, entering function calls.
Step() (*api.DebuggerState, error)
// StepOut continues to the return address of the current function
StepOut() (*api.DebuggerState, error)
// SingleStep will step a single cpu instruction.
StepInstruction() (*api.DebuggerState, error)
// SwitchThread switches the current thread context.
SwitchThread(threadID int) (*api.DebuggerState, error)
// SwitchGoroutine switches the current goroutine (and the current thread as well)
SwitchGoroutine(goroutineID int) (*api.DebuggerState, error)
// Halt suspends the process.
Halt() (*api.DebuggerState, error)
// GetBreakpoint gets a breakpoint by ID.
GetBreakpoint(id int) (*api.Breakpoint, error)
// GetBreakpointByName gets a breakpoint by name.
GetBreakpointByName(name string) (*api.Breakpoint, error)
// CreateBreakpoint creates a new breakpoint.
CreateBreakpoint(*api.Breakpoint) (*api.Breakpoint, error)
// ListBreakpoints gets all breakpoints.
ListBreakpoints() ([]*api.Breakpoint, error)
// ClearBreakpoint deletes a breakpoint by ID.
ClearBreakpoint(id int) (*api.Breakpoint, error)
// ClearBreakpointByName deletes a breakpoint by name
ClearBreakpointByName(name string) (*api.Breakpoint, error)
// Allows user to update an existing breakpoint for example to change the information
// retrieved when the breakpoint is hit or to change, add or remove the break condition
AmendBreakpoint(*api.Breakpoint) error
// Cancels a Next or Step call that was interrupted by a manual stop or by another breakpoint
CancelNext() error
// ListThreads lists all threads.
ListThreads() ([]*api.Thread, error)
// GetThread gets a thread by its ID.
GetThread(id int) (*api.Thread, error)
// ListPackageVariables lists all package variables in the context of the current thread.
ListPackageVariables(filter string, cfg api.LoadConfig) ([]api.Variable, error)
// EvalVariable returns a variable in the context of the current thread.
EvalVariable(scope api.EvalScope, symbol string, cfg api.LoadConfig) (*api.Variable, error)
// SetVariable sets the value of a variable
SetVariable(scope api.EvalScope, symbol, value string) error
// ListSources lists all source files in the process matching filter.
ListSources(filter string) ([]string, error)
// ListFunctions lists all functions in the process matching filter.
ListFunctions(filter string) ([]string, error)
// ListTypes lists all types in the process matching filter.
ListTypes(filter string) ([]string, error)
// ListLocals lists all local variables in scope.
ListLocalVariables(scope api.EvalScope, cfg api.LoadConfig) ([]api.Variable, error)
// ListFunctionArgs lists all arguments to the current function.
ListFunctionArgs(scope api.EvalScope, cfg api.LoadConfig) ([]api.Variable, error)
// ListRegisters lists registers and their values.
ListRegisters(threadID int, includeFp bool) (api.Registers, error)
// ListGoroutines lists all goroutines.
ListGoroutines() ([]*api.Goroutine, error)
// Returns stacktrace
Stacktrace(int, int, *api.LoadConfig) ([]api.Stackframe, error)
// Returns whether we attached to a running process or not
AttachedToExistingProcess() bool
// Returns concrete location information described by a location expression
// loc ::= <filename>:<line> | <function>[:<line>] | /<regex>/ | (+|-)<offset> | <line> | *<address>
// * <filename> can be the full path of a file or just a suffix
// * <function> ::= <package>.<receiver type>.<name> | <package>.(*<receiver type>).<name> | <receiver type>.<name> | <package>.<name> | (*<receiver type>).<name> | <name>
// * <function> must be unambiguous
// * /<regex>/ will return a location for each function matched by regex
// * +<offset> returns a location for the line that is <offset> lines after the current line
// * -<offset> returns a location for the line that is <offset> lines before the current line
// * <line> returns a location for a line in the current file
// * *<address> returns the location corresponding to the specified address
// NOTE: this function does not actually set breakpoints.
FindLocation(scope api.EvalScope, loc string) ([]api.Location, error)
// Disassemble code between startPC and endPC
DisassembleRange(scope api.EvalScope, startPC, endPC uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error)
// Disassemble code of the function containing PC
DisassemblePC(scope api.EvalScope, pc uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error)
}

28
vendor/github.com/derekparker/delve/service/config.go generated vendored Normal file
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package service
import "net"
// Config provides the configuration to start a Debugger and expose it with a
// service.
//
// Only one of ProcessArgs or AttachPid should be specified. If ProcessArgs is
// provided, a new process will be launched. Otherwise, the debugger will try
// to attach to an existing process with AttachPid.
type Config struct {
// Listener is used to serve requests.
Listener net.Listener
// ProcessArgs are the arguments to launch a new process.
ProcessArgs []string
// WorkingDir is working directory of the new process. This field is used
// only when launching a new process.
WorkingDir string
// AttachPid is the PID of an existing process to which the debugger should
// attach.
AttachPid int
// AcceptMulti configures the server to accept multiple connection.
// Note that the server API is not reentrant and clients will have to coordinate.
AcceptMulti bool
// APIVersion selects which version of the API to serve (default: 1).
APIVersion int
}

835
vendor/github.com/derekparker/delve/service/debugger/debugger.go generated vendored Normal file
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package debugger
import (
"debug/gosym"
"errors"
"fmt"
"go/parser"
"log"
"path/filepath"
"regexp"
"runtime"
"strings"
"sync"
"time"
"github.com/derekparker/delve/pkg/proc"
"github.com/derekparker/delve/pkg/target"
"github.com/derekparker/delve/service/api"
)
// Debugger service.
//
// Debugger provides a higher level of
// abstraction over proc.Process.
// It handles converting from internal types to
// the types expected by clients. It also handles
// functionality needed by clients, but not needed in
// lower lever packages such as proc.
type Debugger struct {
config *Config
// TODO(DO NOT MERGE WITHOUT) rename to targetMutex
processMutex sync.Mutex
target target.Interface
}
// Config provides the configuration to start a Debugger.
//
// Only one of ProcessArgs or AttachPid should be specified. If ProcessArgs is
// provided, a new process will be launched. Otherwise, the debugger will try
// to attach to an existing process with AttachPid.
type Config struct {
// ProcessArgs are the arguments to launch a new process.
ProcessArgs []string
// WorkingDir is working directory of the new process. This field is used
// only when launching a new process.
WorkingDir string
// AttachPid is the PID of an existing process to which the debugger should
// attach.
AttachPid int
}
// New creates a new Debugger.
func New(config *Config) (*Debugger, error) {
d := &Debugger{
config: config,
}
// Create the process by either attaching or launching.
if d.config.AttachPid > 0 {
log.Printf("attaching to pid %d", d.config.AttachPid)
p, err := proc.Attach(d.config.AttachPid)
if err != nil {
return nil, attachErrorMessage(d.config.AttachPid, err)
}
d.target = p
} else {
log.Printf("launching process with args: %v", d.config.ProcessArgs)
p, err := proc.Launch(d.config.ProcessArgs, d.config.WorkingDir)
if err != nil {
if err != proc.NotExecutableErr && err != proc.UnsupportedArchErr {
err = fmt.Errorf("could not launch process: %s", err)
}
return nil, err
}
d.target = p
}
return d, nil
}
// ProcessPid returns the PID of the process
// the debugger is debugging.
func (d *Debugger) ProcessPid() int {
return d.target.Pid()
}
// LastModified returns the time that the process' executable was last
// modified.
func (d *Debugger) LastModified() time.Time {
return d.target.LastModified()
}
// Detach detaches from the target process.
// If `kill` is true we will kill the process after
// detaching.
func (d *Debugger) Detach(kill bool) error {
d.processMutex.Lock()
defer d.processMutex.Unlock()
return d.detach(kill)
}
func (d *Debugger) detach(kill bool) error {
if d.config.AttachPid != 0 {
return d.target.Detach(kill)
}
return d.target.Kill()
}
// Restart will restart the target process, first killing
// and then exec'ing it again.
func (d *Debugger) Restart() ([]api.DiscardedBreakpoint, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
if !d.target.Exited() {
if d.target.Running() {
d.target.Halt()
}
// Ensure the process is in a PTRACE_STOP.
if err := stopProcess(d.ProcessPid()); err != nil {
return nil, err
}
if err := d.detach(true); err != nil {
return nil, err
}
}
p, err := proc.Launch(d.config.ProcessArgs, d.config.WorkingDir)
if err != nil {
return nil, fmt.Errorf("could not launch process: %s", err)
}
discarded := []api.DiscardedBreakpoint{}
for _, oldBp := range d.breakpoints() {
if oldBp.ID < 0 {
continue
}
if len(oldBp.File) > 0 {
oldBp.Addr, err = p.FindFileLocation(oldBp.File, oldBp.Line)
if err != nil {
discarded = append(discarded, api.DiscardedBreakpoint{oldBp, err.Error()})
continue
}
}
newBp, err := p.SetBreakpoint(oldBp.Addr, proc.UserBreakpoint, nil)
if err != nil {
return nil, err
}
if err := copyBreakpointInfo(newBp, oldBp); err != nil {
return nil, err
}
}
d.target = p
return discarded, nil
}
// State returns the current state of the debugger.
func (d *Debugger) State() (*api.DebuggerState, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
return d.state()
}
func (d *Debugger) state() (*api.DebuggerState, error) {
if d.target.Exited() {
return nil, proc.ProcessExitedError{Pid: d.ProcessPid()}
}
var (
state *api.DebuggerState
goroutine *api.Goroutine
)
if d.target.SelectedGoroutine() != nil {
goroutine = api.ConvertGoroutine(d.target.SelectedGoroutine())
}
state = &api.DebuggerState{
SelectedGoroutine: goroutine,
Exited: d.target.Exited(),
}
for i := range d.target.Threads() {
th := api.ConvertThread(d.target.Threads()[i])
state.Threads = append(state.Threads, th)
if i == d.target.CurrentThread().ID {
state.CurrentThread = th
}
}
for _, bp := range d.target.Breakpoints() {
if bp.Internal() {
state.NextInProgress = true
break
}
}
return state, nil
}
// CreateBreakpoint creates a breakpoint.
func (d *Debugger) CreateBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
var (
createdBp *api.Breakpoint
addr uint64
err error
)
if requestedBp.Name != "" {
if err = api.ValidBreakpointName(requestedBp.Name); err != nil {
return nil, err
}
if d.findBreakpointByName(requestedBp.Name) != nil {
return nil, errors.New("breakpoint name already exists")
}
}
switch {
case len(requestedBp.File) > 0:
fileName := requestedBp.File
if runtime.GOOS == "windows" {
// Accept fileName which is case-insensitive and slash-insensitive match
fileNameNormalized := strings.ToLower(filepath.ToSlash(fileName))
for symFile := range d.target.Sources() {
if fileNameNormalized == strings.ToLower(filepath.ToSlash(symFile)) {
fileName = symFile
break
}
}
}
addr, err = d.target.FindFileLocation(fileName, requestedBp.Line)
case len(requestedBp.FunctionName) > 0:
if requestedBp.Line >= 0 {
addr, err = d.target.FindFunctionLocation(requestedBp.FunctionName, false, requestedBp.Line)
} else {
addr, err = d.target.FindFunctionLocation(requestedBp.FunctionName, true, 0)
}
default:
addr = requestedBp.Addr
}
if err != nil {
return nil, err
}
bp, err := d.target.SetBreakpoint(addr, proc.UserBreakpoint, nil)
if err != nil {
return nil, err
}
if err := copyBreakpointInfo(bp, requestedBp); err != nil {
if _, err1 := d.target.ClearBreakpoint(bp.Addr); err1 != nil {
err = fmt.Errorf("error while creating breakpoint: %v, additionally the breakpoint could not be properly rolled back: %v", err, err1)
}
return nil, err
}
createdBp = api.ConvertBreakpoint(bp)
log.Printf("created breakpoint: %#v", createdBp)
return createdBp, nil
}
func (d *Debugger) AmendBreakpoint(amend *api.Breakpoint) error {
d.processMutex.Lock()
defer d.processMutex.Unlock()
original := d.findBreakpoint(amend.ID)
if original == nil {
return fmt.Errorf("no breakpoint with ID %d", amend.ID)
}
if err := api.ValidBreakpointName(amend.Name); err != nil {
return err
}
return copyBreakpointInfo(original, amend)
}
func (d *Debugger) CancelNext() error {
return d.target.ClearInternalBreakpoints()
}
func copyBreakpointInfo(bp *proc.Breakpoint, requested *api.Breakpoint) (err error) {
bp.Name = requested.Name
bp.Tracepoint = requested.Tracepoint
bp.Goroutine = requested.Goroutine
bp.Stacktrace = requested.Stacktrace
bp.Variables = requested.Variables
bp.LoadArgs = api.LoadConfigToProc(requested.LoadArgs)
bp.LoadLocals = api.LoadConfigToProc(requested.LoadLocals)
bp.Cond = nil
if requested.Cond != "" {
bp.Cond, err = parser.ParseExpr(requested.Cond)
}
return err
}
// ClearBreakpoint clears a breakpoint.
func (d *Debugger) ClearBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
var clearedBp *api.Breakpoint
bp, err := d.target.ClearBreakpoint(requestedBp.Addr)
if err != nil {
return nil, fmt.Errorf("Can't clear breakpoint @%x: %s", requestedBp.Addr, err)
}
clearedBp = api.ConvertBreakpoint(bp)
log.Printf("cleared breakpoint: %#v", clearedBp)
return clearedBp, err
}
// Breakpoints returns the list of current breakpoints.
func (d *Debugger) Breakpoints() []*api.Breakpoint {
d.processMutex.Lock()
defer d.processMutex.Unlock()
return d.breakpoints()
}
func (d *Debugger) breakpoints() []*api.Breakpoint {
bps := []*api.Breakpoint{}
for _, bp := range d.target.Breakpoints() {
if bp.Internal() {
continue
}
bps = append(bps, api.ConvertBreakpoint(bp))
}
return bps
}
// FindBreakpoint returns the breakpoint specified by 'id'.
func (d *Debugger) FindBreakpoint(id int) *api.Breakpoint {
d.processMutex.Lock()
defer d.processMutex.Unlock()
bp := d.findBreakpoint(id)
if bp == nil {
return nil
}
return api.ConvertBreakpoint(bp)
}
func (d *Debugger) findBreakpoint(id int) *proc.Breakpoint {
for _, bp := range d.target.Breakpoints() {
if bp.ID == id {
return bp
}
}
return nil
}
// FindBreakpointByName returns the breakpoint specified by 'name'
func (d *Debugger) FindBreakpointByName(name string) *api.Breakpoint {
d.processMutex.Lock()
defer d.processMutex.Unlock()
return d.findBreakpointByName(name)
}
func (d *Debugger) findBreakpointByName(name string) *api.Breakpoint {
for _, bp := range d.breakpoints() {
if bp.Name == name {
return bp
}
}
return nil
}
// Threads returns the threads of the target process.
func (d *Debugger) Threads() ([]*api.Thread, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
if d.target.Exited() {
return nil, &proc.ProcessExitedError{}
}
threads := []*api.Thread{}
for _, th := range d.target.Threads() {
threads = append(threads, api.ConvertThread(th))
}
return threads, nil
}
// FindThread returns the thread for the given 'id'.
func (d *Debugger) FindThread(id int) (*api.Thread, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
if d.target.Exited() {
return nil, &proc.ProcessExitedError{}
}
for _, th := range d.target.Threads() {
if th.ID == id {
return api.ConvertThread(th), nil
}
}
return nil, nil
}
// Command handles commands which control the debugger lifecycle
func (d *Debugger) Command(command *api.DebuggerCommand) (*api.DebuggerState, error) {
var err error
if command.Name == api.Halt {
// RequestManualStop does not invoke any ptrace syscalls, so it's safe to
// access the process directly.
log.Print("halting")
err = d.target.RequestManualStop()
}
d.processMutex.Lock()
defer d.processMutex.Unlock()
switch command.Name {
case api.Continue:
log.Print("continuing")
err = d.target.Continue()
if err != nil {
if exitedErr, exited := err.(proc.ProcessExitedError); exited {
state := &api.DebuggerState{}
state.Exited = true
state.ExitStatus = exitedErr.Status
state.Err = errors.New(exitedErr.Error())
return state, nil
}
return nil, err
}
state, stateErr := d.state()
if stateErr != nil {
return state, stateErr
}
err = d.collectBreakpointInformation(state)
return state, err
case api.Next:
log.Print("nexting")
err = d.target.Next()
case api.Step:
log.Print("stepping")
err = d.target.Step()
case api.StepInstruction:
log.Print("single stepping")
err = d.target.StepInstruction()
case api.StepOut:
log.Print("step out")
err = d.target.StepOut()
case api.SwitchThread:
log.Printf("switching to thread %d", command.ThreadID)
err = d.target.SwitchThread(command.ThreadID)
case api.SwitchGoroutine:
log.Printf("switching to goroutine %d", command.GoroutineID)
err = d.target.SwitchGoroutine(command.GoroutineID)
case api.Halt:
// RequestManualStop already called
}
if err != nil {
return nil, err
}
return d.state()
}
func (d *Debugger) collectBreakpointInformation(state *api.DebuggerState) error {
if state == nil {
return nil
}
for i := range state.Threads {
if state.Threads[i].Breakpoint == nil {
continue
}
bp := state.Threads[i].Breakpoint
bpi := &api.BreakpointInfo{}
state.Threads[i].BreakpointInfo = bpi
if bp.Goroutine {
g, err := d.target.CurrentThread().GetG()
if err != nil {
return err
}
bpi.Goroutine = api.ConvertGoroutine(g)
}
if bp.Stacktrace > 0 {
rawlocs, err := d.target.CurrentThread().Stacktrace(bp.Stacktrace)
if err != nil {
return err
}
bpi.Stacktrace, err = d.convertStacktrace(rawlocs, nil)
if err != nil {
return err
}
}
s, err := d.target.Threads()[state.Threads[i].ID].Scope()
if err != nil {
return err
}
if len(bp.Variables) > 0 {
bpi.Variables = make([]api.Variable, len(bp.Variables))
}
for i := range bp.Variables {
v, err := s.EvalVariable(bp.Variables[i], proc.LoadConfig{true, 1, 64, 64, -1})
if err != nil {
return err
}
bpi.Variables[i] = *api.ConvertVar(v)
}
if bp.LoadArgs != nil {
if vars, err := s.FunctionArguments(*api.LoadConfigToProc(bp.LoadArgs)); err == nil {
bpi.Arguments = convertVars(vars)
}
}
if bp.LoadLocals != nil {
if locals, err := s.LocalVariables(*api.LoadConfigToProc(bp.LoadLocals)); err == nil {
bpi.Locals = convertVars(locals)
}
}
}
return nil
}
// Sources returns a list of the source files for target binary.
func (d *Debugger) Sources(filter string) ([]string, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
regex, err := regexp.Compile(filter)
if err != nil {
return nil, fmt.Errorf("invalid filter argument: %s", err.Error())
}
files := []string{}
for f := range d.target.Sources() {
if regex.Match([]byte(f)) {
files = append(files, f)
}
}
return files, nil
}
// Functions returns a list of functions in the target process.
func (d *Debugger) Functions(filter string) ([]string, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
return regexFilterFuncs(filter, d.target.Funcs())
}
func (d *Debugger) Types(filter string) ([]string, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
regex, err := regexp.Compile(filter)
if err != nil {
return nil, fmt.Errorf("invalid filter argument: %s", err.Error())
}
types, err := d.target.Types()
if err != nil {
return nil, err
}
r := make([]string, 0, len(types))
for _, typ := range types {
if regex.Match([]byte(typ)) {
r = append(r, typ)
}
}
return r, nil
}
func regexFilterFuncs(filter string, allFuncs []gosym.Func) ([]string, error) {
regex, err := regexp.Compile(filter)
if err != nil {
return nil, fmt.Errorf("invalid filter argument: %s", err.Error())
}
funcs := []string{}
for _, f := range allFuncs {
if f.Sym != nil && regex.Match([]byte(f.Name)) {
funcs = append(funcs, f.Name)
}
}
return funcs, nil
}
// PackageVariables returns a list of package variables for the thread,
// optionally regexp filtered using regexp described in 'filter'.
func (d *Debugger) PackageVariables(threadID int, filter string, cfg proc.LoadConfig) ([]api.Variable, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
regex, err := regexp.Compile(filter)
if err != nil {
return nil, fmt.Errorf("invalid filter argument: %s", err.Error())
}
vars := []api.Variable{}
thread, found := d.target.Threads()[threadID]
if !found {
return nil, fmt.Errorf("couldn't find thread %d", threadID)
}
scope, err := thread.Scope()
if err != nil {
return nil, err
}
pv, err := scope.PackageVariables(cfg)
if err != nil {
return nil, err
}
for _, v := range pv {
if regex.Match([]byte(v.Name)) {
vars = append(vars, *api.ConvertVar(v))
}
}
return vars, err
}
// Registers returns string representation of the CPU registers.
func (d *Debugger) Registers(threadID int, floatingPoint bool) (api.Registers, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
thread, found := d.target.Threads()[threadID]
if !found {
return nil, fmt.Errorf("couldn't find thread %d", threadID)
}
regs, err := thread.Registers(floatingPoint)
if err != nil {
return nil, err
}
return api.ConvertRegisters(regs.Slice()), err
}
func convertVars(pv []*proc.Variable) []api.Variable {
vars := make([]api.Variable, 0, len(pv))
for _, v := range pv {
vars = append(vars, *api.ConvertVar(v))
}
return vars
}
// LocalVariables returns a list of the local variables.
func (d *Debugger) LocalVariables(scope api.EvalScope, cfg proc.LoadConfig) ([]api.Variable, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
s, err := d.target.ConvertEvalScope(scope.GoroutineID, scope.Frame)
if err != nil {
return nil, err
}
pv, err := s.LocalVariables(cfg)
if err != nil {
return nil, err
}
return convertVars(pv), err
}
// FunctionArguments returns the arguments to the current function.
func (d *Debugger) FunctionArguments(scope api.EvalScope, cfg proc.LoadConfig) ([]api.Variable, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
s, err := d.target.ConvertEvalScope(scope.GoroutineID, scope.Frame)
if err != nil {
return nil, err
}
pv, err := s.FunctionArguments(cfg)
if err != nil {
return nil, err
}
return convertVars(pv), nil
}
// EvalVariableInScope will attempt to evaluate the variable represented by 'symbol'
// in the scope provided.
func (d *Debugger) EvalVariableInScope(scope api.EvalScope, symbol string, cfg proc.LoadConfig) (*api.Variable, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
s, err := d.target.ConvertEvalScope(scope.GoroutineID, scope.Frame)
if err != nil {
return nil, err
}
v, err := s.EvalVariable(symbol, cfg)
if err != nil {
return nil, err
}
return api.ConvertVar(v), err
}
// SetVariableInScope will set the value of the variable represented by
// 'symbol' to the value given, in the given scope.
func (d *Debugger) SetVariableInScope(scope api.EvalScope, symbol, value string) error {
d.processMutex.Lock()
defer d.processMutex.Unlock()
s, err := d.target.ConvertEvalScope(scope.GoroutineID, scope.Frame)
if err != nil {
return err
}
return s.SetVariable(symbol, value)
}
// Goroutines will return a list of goroutines in the target process.
func (d *Debugger) Goroutines() ([]*api.Goroutine, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
goroutines := []*api.Goroutine{}
gs, err := d.target.GoroutinesInfo()
if err != nil {
return nil, err
}
for _, g := range gs {
goroutines = append(goroutines, api.ConvertGoroutine(g))
}
return goroutines, err
}
// Stacktrace returns a list of Stackframes for the given goroutine. The
// length of the returned list will be min(stack_len, depth).
// If 'full' is true, then local vars, function args, etc will be returned as well.
func (d *Debugger) Stacktrace(goroutineID, depth int, cfg *proc.LoadConfig) ([]api.Stackframe, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
var rawlocs []proc.Stackframe
g, err := d.target.FindGoroutine(goroutineID)
if err != nil {
return nil, err
}
if g == nil {
rawlocs, err = d.target.CurrentThread().Stacktrace(depth)
} else {
rawlocs, err = g.Stacktrace(depth)
}
if err != nil {
return nil, err
}
return d.convertStacktrace(rawlocs, cfg)
}
func (d *Debugger) convertStacktrace(rawlocs []proc.Stackframe, cfg *proc.LoadConfig) ([]api.Stackframe, error) {
locations := make([]api.Stackframe, 0, len(rawlocs))
for i := range rawlocs {
frame := api.Stackframe{Location: api.ConvertLocation(rawlocs[i].Call)}
if cfg != nil && rawlocs[i].Current.Fn != nil {
var err error
scope := rawlocs[i].Scope(d.target.CurrentThread())
locals, err := scope.LocalVariables(*cfg)
if err != nil {
return nil, err
}
arguments, err := scope.FunctionArguments(*cfg)
if err != nil {
return nil, err
}
frame.Locals = convertVars(locals)
frame.Arguments = convertVars(arguments)
}
locations = append(locations, frame)
}
return locations, nil
}
// FindLocation will find the location specified by 'locStr'.
func (d *Debugger) FindLocation(scope api.EvalScope, locStr string) ([]api.Location, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
loc, err := parseLocationSpec(locStr)
if err != nil {
return nil, err
}
s, _ := d.target.ConvertEvalScope(scope.GoroutineID, scope.Frame)
locs, err := loc.Find(d, s, locStr)
for i := range locs {
file, line, fn := d.target.PCToLine(locs[i].PC)
locs[i].File = file
locs[i].Line = line
locs[i].Function = api.ConvertFunction(fn)
}
return locs, err
}
// Disassembles code between startPC and endPC
// if endPC == 0 it will find the function containing startPC and disassemble the whole function
func (d *Debugger) Disassemble(scope api.EvalScope, startPC, endPC uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
d.processMutex.Lock()
defer d.processMutex.Unlock()
if endPC == 0 {
_, _, fn := d.target.PCToLine(startPC)
if fn == nil {
return nil, fmt.Errorf("Address 0x%x does not belong to any function", startPC)
}
startPC = fn.Entry
endPC = fn.End
}
currentGoroutine := true
thread := d.target.CurrentThread()
if s, err := d.target.ConvertEvalScope(scope.GoroutineID, scope.Frame); err == nil {
thread = s.Thread
if scope.GoroutineID != -1 {
g, _ := s.Thread.GetG()
if g == nil || g.ID != scope.GoroutineID {
currentGoroutine = false
}
}
}
insts, err := thread.Disassemble(startPC, endPC, currentGoroutine)
if err != nil {
return nil, err
}
disass := make(api.AsmInstructions, len(insts))
for i := range insts {
disass[i] = api.ConvertAsmInstruction(insts[i], insts[i].Text(proc.AssemblyFlavour(flavour)))
}
return disass, nil
}

15
vendor/github.com/derekparker/delve/service/debugger/debugger_darwin.go generated vendored Normal file
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@ -0,0 +1,15 @@
package debugger
import (
"fmt"
sys "golang.org/x/sys/unix"
)
func attachErrorMessage(pid int, err error) error {
//TODO: mention certificates?
return fmt.Errorf("could not attach to pid %d: %s", pid, err)
}
func stopProcess(pid int) error {
return sys.Kill(pid, sys.SIGSTOP)
}

35
vendor/github.com/derekparker/delve/service/debugger/debugger_linux.go generated vendored Normal file
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@ -0,0 +1,35 @@
package debugger
import (
"fmt"
sys "golang.org/x/sys/unix"
"io/ioutil"
"os"
"syscall"
)
func attachErrorMessage(pid int, err error) error {
fallbackerr := fmt.Errorf("could not attach to pid %d: %s", pid, err)
if serr, ok := err.(syscall.Errno); ok {
switch serr {
case syscall.EPERM:
bs, err := ioutil.ReadFile("/proc/sys/kernel/yama/ptrace_scope")
if err == nil && len(bs) >= 1 && bs[0] != '0' {
// Yama documentation: https://www.kernel.org/doc/Documentation/security/Yama.txt
return fmt.Errorf("Could not attach to pid %d: set /proc/sys/kernel/yama/ptrace_scope to 0", pid)
}
fi, err := os.Stat(fmt.Sprintf("/proc/%d", pid))
if err != nil {
return fallbackerr
}
if fi.Sys().(*syscall.Stat_t).Uid != uint32(os.Getuid()) {
return fmt.Errorf("Could not attach to pid %d: current user does not own the process", pid)
}
}
}
return fallbackerr
}
func stopProcess(pid int) error {
return sys.Kill(pid, sys.SIGSTOP)
}

16
vendor/github.com/derekparker/delve/service/debugger/debugger_windows.go generated vendored Normal file
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@ -0,0 +1,16 @@
package debugger
import (
"fmt"
)
func attachErrorMessage(pid int, err error) error {
return fmt.Errorf("could not attach to pid %d: %s", pid, err)
}
func stopProcess(pid int) error {
// We cannot gracefully stop a process on Windows,
// so just ignore this request and let `Detach` kill
// the process.
return nil
}

411
vendor/github.com/derekparker/delve/service/debugger/locations.go generated vendored Normal file
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@ -0,0 +1,411 @@
package debugger
import (
"debug/gosym"
"fmt"
"go/constant"
"path/filepath"
"reflect"
"runtime"
"strconv"
"strings"
"github.com/derekparker/delve/pkg/proc"
"github.com/derekparker/delve/service/api"
)
const maxFindLocationCandidates = 5
type LocationSpec interface {
Find(d *Debugger, scope *proc.EvalScope, locStr string) ([]api.Location, error)
}
type NormalLocationSpec struct {
Base string
FuncBase *FuncLocationSpec
LineOffset int
}
type RegexLocationSpec struct {
FuncRegex string
}
type AddrLocationSpec struct {
AddrExpr string
}
type OffsetLocationSpec struct {
Offset int
}
type LineLocationSpec struct {
Line int
}
type FuncLocationSpec struct {
PackageName string
AbsolutePackage bool
ReceiverName string
PackageOrReceiverName string
BaseName string
}
func parseLocationSpec(locStr string) (LocationSpec, error) {
rest := locStr
malformed := func(reason string) error {
return fmt.Errorf("Malformed breakpoint location \"%s\" at %d: %s", locStr, len(locStr)-len(rest), reason)
}
if len(rest) <= 0 {
return nil, malformed("empty string")
}
switch rest[0] {
case '+', '-':
offset, err := strconv.Atoi(rest)
if err != nil {
return nil, malformed(err.Error())
}
return &OffsetLocationSpec{offset}, nil
case '/':
if rest[len(rest)-1] == '/' {
rx, rest := readRegex(rest[1:])
if len(rest) < 0 {
return nil, malformed("non-terminated regular expression")
}
if len(rest) > 1 {
return nil, malformed("no line offset can be specified for regular expression locations")
}
return &RegexLocationSpec{rx}, nil
} else {
return parseLocationSpecDefault(locStr, rest)
}
case '*':
return &AddrLocationSpec{rest[1:]}, nil
default:
return parseLocationSpecDefault(locStr, rest)
}
}
func parseLocationSpecDefault(locStr, rest string) (LocationSpec, error) {
malformed := func(reason string) error {
return fmt.Errorf("Malformed breakpoint location \"%s\" at %d: %s", locStr, len(locStr)-len(rest), reason)
}
v := strings.Split(rest, ":")
if len(v) > 2 {
// On Windows, path may contain ":", so split only on last ":"
v = []string{strings.Join(v[0:len(v)-1], ":"), v[len(v)-1]}
}
if len(v) == 1 {
n, err := strconv.ParseInt(v[0], 0, 64)
if err == nil {
return &LineLocationSpec{int(n)}, nil
}
}
spec := &NormalLocationSpec{}
spec.Base = v[0]
spec.FuncBase = parseFuncLocationSpec(spec.Base)
if len(v) < 2 {
spec.LineOffset = -1
return spec, nil
}
rest = v[1]
var err error
spec.LineOffset, err = strconv.Atoi(rest)
if err != nil || spec.LineOffset < 0 {
return nil, malformed("line offset negative or not a number")
}
return spec, nil
}
func readRegex(in string) (rx string, rest string) {
out := make([]rune, 0, len(in))
escaped := false
for i, ch := range in {
if escaped {
if ch == '/' {
out = append(out, '/')
} else {
out = append(out, '\\')
out = append(out, ch)
}
escaped = false
} else {
switch ch {
case '\\':
escaped = true
case '/':
return string(out), in[i:]
default:
out = append(out, ch)
}
}
}
return string(out), ""
}
func parseFuncLocationSpec(in string) *FuncLocationSpec {
var v []string
pathend := strings.LastIndex(in, "/")
if pathend < 0 {
v = strings.Split(in, ".")
} else {
v = strings.Split(in[pathend:], ".")
if len(v) > 0 {
v[0] = in[:pathend] + v[0]
}
}
var spec FuncLocationSpec
switch len(v) {
case 1:
spec.BaseName = v[0]
case 2:
spec.BaseName = v[1]
r := stripReceiverDecoration(v[0])
if r != v[0] {
spec.ReceiverName = r
} else if strings.Index(r, "/") >= 0 {
spec.PackageName = r
} else {
spec.PackageOrReceiverName = r
}
case 3:
spec.BaseName = v[2]
spec.ReceiverName = stripReceiverDecoration(v[1])
spec.PackageName = v[0]
default:
return nil
}
if strings.HasPrefix(spec.PackageName, "/") {
spec.PackageName = spec.PackageName[1:]
spec.AbsolutePackage = true
}
if strings.Index(spec.BaseName, "/") >= 0 || strings.Index(spec.ReceiverName, "/") >= 0 {
return nil
}
return &spec
}
func stripReceiverDecoration(in string) string {
if len(in) < 3 {
return in
}
if (in[0] != '(') || (in[1] != '*') || (in[len(in)-1] != ')') {
return in
}
return in[2 : len(in)-1]
}
func (spec *FuncLocationSpec) Match(sym *gosym.Sym) bool {
if spec.BaseName != sym.BaseName() {
return false
}
recv := stripReceiverDecoration(sym.ReceiverName())
if spec.ReceiverName != "" && spec.ReceiverName != recv {
return false
}
if spec.PackageName != "" {
if spec.AbsolutePackage {
if spec.PackageName != sym.PackageName() {
return false
}
} else {
if !partialPathMatch(spec.PackageName, sym.PackageName()) {
return false
}
}
}
if spec.PackageOrReceiverName != "" && !partialPathMatch(spec.PackageOrReceiverName, sym.PackageName()) && spec.PackageOrReceiverName != recv {
return false
}
return true
}
func (loc *RegexLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string) ([]api.Location, error) {
funcs := d.target.Funcs()
matches, err := regexFilterFuncs(loc.FuncRegex, funcs)
if err != nil {
return nil, err
}
r := make([]api.Location, 0, len(matches))
for i := range matches {
addr, err := d.target.FindFunctionLocation(matches[i], true, 0)
if err == nil {
r = append(r, api.Location{PC: addr})
}
}
return r, nil
}
func (loc *AddrLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string) ([]api.Location, error) {
if scope == nil {
addr, err := strconv.ParseInt(loc.AddrExpr, 0, 64)
if err != nil {
return nil, fmt.Errorf("could not determine current location (scope is nil)")
}
return []api.Location{{PC: uint64(addr)}}, nil
} else {
v, err := scope.EvalExpression(loc.AddrExpr, proc.LoadConfig{true, 0, 0, 0, 0})
if err != nil {
return nil, err
}
if v.Unreadable != nil {
return nil, v.Unreadable
}
switch v.Kind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
addr, _ := constant.Uint64Val(v.Value)
return []api.Location{{PC: addr}}, nil
case reflect.Func:
_, _, fn := d.target.PCToLine(uint64(v.Base))
pc, err := d.target.FirstPCAfterPrologue(fn, false)
if err != nil {
return nil, err
}
return []api.Location{{PC: uint64(pc)}}, nil
default:
return nil, fmt.Errorf("wrong expression kind: %v", v.Kind)
}
}
}
func (loc *NormalLocationSpec) FileMatch(path string) bool {
return partialPathMatch(loc.Base, path)
}
func partialPathMatch(expr, path string) bool {
if runtime.GOOS == "windows" {
// Accept `expr` which is case-insensitive and slash-insensitive match to `path`
expr = strings.ToLower(filepath.ToSlash(expr))
path = strings.ToLower(filepath.ToSlash(path))
}
if len(expr) < len(path)-1 {
return strings.HasSuffix(path, expr) && (path[len(path)-len(expr)-1] == '/')
} else {
return expr == path
}
}
type AmbiguousLocationError struct {
Location string
CandidatesString []string
CandidatesLocation []api.Location
}
func (ale AmbiguousLocationError) Error() string {
var candidates []string
if ale.CandidatesLocation != nil {
for i := range ale.CandidatesLocation {
candidates = append(candidates, ale.CandidatesLocation[i].Function.Name)
}
} else {
candidates = ale.CandidatesString
}
return fmt.Sprintf("Location \"%s\" ambiguous: %s…", ale.Location, strings.Join(candidates, ", "))
}
func (loc *NormalLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string) ([]api.Location, error) {
funcs := d.target.Funcs()
files := d.target.Sources()
candidates := []string{}
for file := range files {
if loc.FileMatch(file) {
candidates = append(candidates, file)
if len(candidates) >= maxFindLocationCandidates {
break
}
}
}
if loc.FuncBase != nil {
for _, f := range funcs {
if f.Sym == nil {
continue
}
if loc.FuncBase.Match(f.Sym) {
if loc.Base == f.Name {
// if an exact match for the function name is found use it
candidates = []string{f.Name}
break
}
if len(candidates) < maxFindLocationCandidates {
candidates = append(candidates, f.Name)
}
}
}
}
switch len(candidates) {
case 1:
var addr uint64
var err error
if filepath.IsAbs(candidates[0]) {
if loc.LineOffset < 0 {
return nil, fmt.Errorf("Malformed breakpoint location, no line offset specified")
}
addr, err = d.target.FindFileLocation(candidates[0], loc.LineOffset)
} else {
if loc.LineOffset < 0 {
addr, err = d.target.FindFunctionLocation(candidates[0], true, 0)
} else {
addr, err = d.target.FindFunctionLocation(candidates[0], false, loc.LineOffset)
}
}
if err != nil {
return nil, err
}
return []api.Location{{PC: addr}}, nil
case 0:
return nil, fmt.Errorf("Location \"%s\" not found", locStr)
default:
return nil, AmbiguousLocationError{Location: locStr, CandidatesString: candidates}
}
}
func (loc *OffsetLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string) ([]api.Location, error) {
if scope == nil {
return nil, fmt.Errorf("could not determine current location (scope is nil)")
}
file, line, fn := d.target.PCToLine(scope.PC)
if fn == nil {
return nil, fmt.Errorf("could not determine current location")
}
addr, err := d.target.FindFileLocation(file, line+loc.Offset)
return []api.Location{{PC: addr}}, err
}
func (loc *LineLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string) ([]api.Location, error) {
if scope == nil {
return nil, fmt.Errorf("could not determine current location (scope is nil)")
}
file, _, fn := d.target.PCToLine(scope.PC)
if fn == nil {
return nil, fmt.Errorf("could not determine current location")
}
addr, err := d.target.FindFileLocation(file, loc.Line)
return []api.Location{{PC: addr}}, err
}

312
vendor/github.com/derekparker/delve/service/rpc1/client.go generated vendored Normal file
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package rpc1
import (
"errors"
"fmt"
"log"
"net/rpc"
"net/rpc/jsonrpc"
"sync"
"github.com/derekparker/delve/service/api"
)
// Client is a RPC service.Client.
type RPCClient struct {
addr string
processPid int
client *rpc.Client
haltMu sync.Mutex
haltReq bool
}
var unsupportedApiError = errors.New("unsupported")
// NewClient creates a new RPCClient.
func NewClient(addr string) *RPCClient {
client, err := jsonrpc.Dial("tcp", addr)
if err != nil {
log.Fatal("dialing:", err)
}
return &RPCClient{
addr: addr,
client: client,
}
}
func (c *RPCClient) ProcessPid() int {
var pid int
c.call("ProcessPid", nil, &pid)
return pid
}
func (c *RPCClient) Detach(kill bool) error {
return c.call("Detach", kill, nil)
}
func (c *RPCClient) Restart() error {
return c.call("Restart", nil, nil)
}
func (c *RPCClient) GetState() (*api.DebuggerState, error) {
state := new(api.DebuggerState)
err := c.call("State", nil, state)
return state, err
}
func (c *RPCClient) Continue() <-chan *api.DebuggerState {
ch := make(chan *api.DebuggerState)
c.haltMu.Lock()
c.haltReq = false
c.haltMu.Unlock()
go func() {
for {
c.haltMu.Lock()
if c.haltReq {
c.haltMu.Unlock()
close(ch)
return
}
c.haltMu.Unlock()
state := new(api.DebuggerState)
err := c.call("Command", &api.DebuggerCommand{Name: api.Continue}, state)
if err != nil {
state.Err = err
}
if state.Exited {
// Error types apparently cannot be marshalled by Go correctly. Must reset error here.
state.Err = fmt.Errorf("Process %d has exited with status %d", c.ProcessPid(), state.ExitStatus)
}
ch <- state
if err != nil || state.Exited {
close(ch)
return
}
isbreakpoint := false
istracepoint := true
for i := range state.Threads {
if state.Threads[i].Breakpoint != nil {
isbreakpoint = true
istracepoint = istracepoint && state.Threads[i].Breakpoint.Tracepoint
}
}
if !isbreakpoint || !istracepoint {
close(ch)
return
}
}
}()
return ch
}
func (c *RPCClient) Next() (*api.DebuggerState, error) {
state := new(api.DebuggerState)
err := c.call("Command", &api.DebuggerCommand{Name: api.Next}, state)
return state, err
}
func (c *RPCClient) Step() (*api.DebuggerState, error) {
state := new(api.DebuggerState)
err := c.call("Command", &api.DebuggerCommand{Name: api.Step}, state)
return state, err
}
func (c *RPCClient) StepInstruction() (*api.DebuggerState, error) {
state := new(api.DebuggerState)
err := c.call("Command", &api.DebuggerCommand{Name: api.StepInstruction}, state)
return state, err
}
func (c *RPCClient) SwitchThread(threadID int) (*api.DebuggerState, error) {
state := new(api.DebuggerState)
cmd := &api.DebuggerCommand{
Name: api.SwitchThread,
ThreadID: threadID,
}
err := c.call("Command", cmd, state)
return state, err
}
func (c *RPCClient) SwitchGoroutine(goroutineID int) (*api.DebuggerState, error) {
state := new(api.DebuggerState)
cmd := &api.DebuggerCommand{
Name: api.SwitchGoroutine,
GoroutineID: goroutineID,
}
err := c.call("Command", cmd, state)
return state, err
}
func (c *RPCClient) Halt() (*api.DebuggerState, error) {
state := new(api.DebuggerState)
c.haltMu.Lock()
c.haltReq = true
c.haltMu.Unlock()
err := c.call("Command", &api.DebuggerCommand{Name: api.Halt}, state)
return state, err
}
func (c *RPCClient) GetBreakpoint(id int) (*api.Breakpoint, error) {
breakpoint := new(api.Breakpoint)
err := c.call("GetBreakpoint", id, breakpoint)
return breakpoint, err
}
func (c *RPCClient) GetBreakpointByName(name string) (*api.Breakpoint, error) {
breakpoint := new(api.Breakpoint)
err := c.call("GetBreakpointByName", name, breakpoint)
return breakpoint, err
}
func (c *RPCClient) CreateBreakpoint(breakPoint *api.Breakpoint) (*api.Breakpoint, error) {
newBreakpoint := new(api.Breakpoint)
err := c.call("CreateBreakpoint", breakPoint, &newBreakpoint)
return newBreakpoint, err
}
func (c *RPCClient) ListBreakpoints() ([]*api.Breakpoint, error) {
var breakpoints []*api.Breakpoint
err := c.call("ListBreakpoints", nil, &breakpoints)
return breakpoints, err
}
func (c *RPCClient) ClearBreakpoint(id int) (*api.Breakpoint, error) {
bp := new(api.Breakpoint)
err := c.call("ClearBreakpoint", id, bp)
return bp, err
}
func (c *RPCClient) ClearBreakpointByName(name string) (*api.Breakpoint, error) {
bp := new(api.Breakpoint)
err := c.call("ClearBreakpointByName", name, bp)
return bp, err
}
func (c *RPCClient) AmendBreakpoint(bp *api.Breakpoint) error {
err := c.call("AmendBreakpoint", bp, nil)
return err
}
func (c *RPCClient) CancelNext() error {
return unsupportedApiError
}
func (c *RPCClient) ListThreads() ([]*api.Thread, error) {
var threads []*api.Thread
err := c.call("ListThreads", nil, &threads)
return threads, err
}
func (c *RPCClient) GetThread(id int) (*api.Thread, error) {
thread := new(api.Thread)
err := c.call("GetThread", id, &thread)
return thread, err
}
func (c *RPCClient) EvalVariable(scope api.EvalScope, symbol string) (*api.Variable, error) {
v := new(api.Variable)
err := c.call("EvalSymbol", EvalSymbolArgs{scope, symbol}, v)
return v, err
}
func (c *RPCClient) SetVariable(scope api.EvalScope, symbol, value string) error {
var unused int
return c.call("SetSymbol", SetSymbolArgs{scope, symbol, value}, &unused)
}
func (c *RPCClient) ListSources(filter string) ([]string, error) {
var sources []string
err := c.call("ListSources", filter, &sources)
return sources, err
}
func (c *RPCClient) ListFunctions(filter string) ([]string, error) {
var funcs []string
err := c.call("ListFunctions", filter, &funcs)
return funcs, err
}
func (c *RPCClient) ListTypes(filter string) ([]string, error) {
var types []string
err := c.call("ListTypes", filter, &types)
return types, err
}
func (c *RPCClient) ListPackageVariables(filter string) ([]api.Variable, error) {
var vars []api.Variable
err := c.call("ListPackageVars", filter, &vars)
return vars, err
}
func (c *RPCClient) ListPackageVariablesFor(threadID int, filter string) ([]api.Variable, error) {
var vars []api.Variable
err := c.call("ListThreadPackageVars", &ThreadListArgs{Id: threadID, Filter: filter}, &vars)
return vars, err
}
func (c *RPCClient) ListLocalVariables(scope api.EvalScope) ([]api.Variable, error) {
var vars []api.Variable
err := c.call("ListLocalVars", scope, &vars)
return vars, err
}
func (c *RPCClient) ListRegisters() (string, error) {
var regs string
err := c.call("ListRegisters", nil, &regs)
return regs, err
}
func (c *RPCClient) ListFunctionArgs(scope api.EvalScope) ([]api.Variable, error) {
var vars []api.Variable
err := c.call("ListFunctionArgs", scope, &vars)
return vars, err
}
func (c *RPCClient) ListGoroutines() ([]*api.Goroutine, error) {
var goroutines []*api.Goroutine
err := c.call("ListGoroutines", nil, &goroutines)
return goroutines, err
}
func (c *RPCClient) Stacktrace(goroutineId, depth int, full bool) ([]api.Stackframe, error) {
var locations []api.Stackframe
err := c.call("StacktraceGoroutine", &StacktraceGoroutineArgs{Id: goroutineId, Depth: depth, Full: full}, &locations)
return locations, err
}
func (c *RPCClient) AttachedToExistingProcess() bool {
var answer bool
c.call("AttachedToExistingProcess", nil, &answer)
return answer
}
func (c *RPCClient) FindLocation(scope api.EvalScope, loc string) ([]api.Location, error) {
var answer []api.Location
err := c.call("FindLocation", FindLocationArgs{scope, loc}, &answer)
return answer, err
}
// Disassemble code between startPC and endPC
func (c *RPCClient) DisassembleRange(scope api.EvalScope, startPC, endPC uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
var r api.AsmInstructions
err := c.call("Disassemble", DisassembleRequest{scope, startPC, endPC, flavour}, &r)
return r, err
}
// Disassemble function containing pc
func (c *RPCClient) DisassemblePC(scope api.EvalScope, pc uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
var r api.AsmInstructions
err := c.call("Disassemble", DisassembleRequest{scope, pc, 0, flavour}, &r)
return r, err
}
func (c *RPCClient) url(path string) string {
return fmt.Sprintf("http://%s%s", c.addr, path)
}
func (c *RPCClient) call(method string, args, reply interface{}) error {
return c.client.Call("RPCServer."+method, args, reply)
}

5
vendor/github.com/derekparker/delve/service/rpc1/readme.txtr generated vendored Normal file
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@ -0,0 +1,5 @@
This package implements version 1 of Delve's API and is only
kept here for backwards compatibility. Client.go is the old
client code used by Delve's frontend (delve/cmd/dlv), it is
only preserved here for the backwards compatibility tests in
service/test/integration1_test.go.

318
vendor/github.com/derekparker/delve/service/rpc1/server.go generated vendored Normal file
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@ -0,0 +1,318 @@
package rpc1
import (
"errors"
"fmt"
"github.com/derekparker/delve/pkg/proc"
"github.com/derekparker/delve/service"
"github.com/derekparker/delve/service/api"
"github.com/derekparker/delve/service/debugger"
)
var defaultLoadConfig = proc.LoadConfig{true, 1, 64, 64, -1}
type RPCServer struct {
// config is all the information necessary to start the debugger and server.
config *service.Config
// debugger is a debugger service.
debugger *debugger.Debugger
}
func NewServer(config *service.Config, debugger *debugger.Debugger) *RPCServer {
return &RPCServer{config, debugger}
}
func (s *RPCServer) ProcessPid(arg1 interface{}, pid *int) error {
*pid = s.debugger.ProcessPid()
return nil
}
func (s *RPCServer) Detach(kill bool, ret *int) error {
return s.debugger.Detach(kill)
}
func (s *RPCServer) Restart(arg1 interface{}, arg2 *int) error {
if s.config.AttachPid != 0 {
return errors.New("cannot restart process Delve did not create")
}
_, err := s.debugger.Restart()
return err
}
func (s *RPCServer) State(arg interface{}, state *api.DebuggerState) error {
st, err := s.debugger.State()
if err != nil {
return err
}
*state = *st
return nil
}
func (s *RPCServer) Command(command *api.DebuggerCommand, cb service.RPCCallback) {
st, err := s.debugger.Command(command)
cb.Return(st, err)
}
func (s *RPCServer) GetBreakpoint(id int, breakpoint *api.Breakpoint) error {
bp := s.debugger.FindBreakpoint(id)
if bp == nil {
return fmt.Errorf("no breakpoint with id %d", id)
}
*breakpoint = *bp
return nil
}
func (s *RPCServer) GetBreakpointByName(name string, breakpoint *api.Breakpoint) error {
bp := s.debugger.FindBreakpointByName(name)
if bp == nil {
return fmt.Errorf("no breakpoint with name %s", name)
}
*breakpoint = *bp
return nil
}
type StacktraceGoroutineArgs struct {
Id int
Depth int
Full bool
}
func (s *RPCServer) StacktraceGoroutine(args *StacktraceGoroutineArgs, locations *[]api.Stackframe) error {
var loadcfg *proc.LoadConfig = nil
if args.Full {
loadcfg = &defaultLoadConfig
}
locs, err := s.debugger.Stacktrace(args.Id, args.Depth, loadcfg)
if err != nil {
return err
}
*locations = locs
return nil
}
func (s *RPCServer) ListBreakpoints(arg interface{}, breakpoints *[]*api.Breakpoint) error {
*breakpoints = s.debugger.Breakpoints()
return nil
}
func (s *RPCServer) CreateBreakpoint(bp, newBreakpoint *api.Breakpoint) error {
createdbp, err := s.debugger.CreateBreakpoint(bp)
if err != nil {
return err
}
*newBreakpoint = *createdbp
return nil
}
func (s *RPCServer) ClearBreakpoint(id int, breakpoint *api.Breakpoint) error {
bp := s.debugger.FindBreakpoint(id)
if bp == nil {
return fmt.Errorf("no breakpoint with id %d", id)
}
deleted, err := s.debugger.ClearBreakpoint(bp)
if err != nil {
return err
}
*breakpoint = *deleted
return nil
}
func (s *RPCServer) ClearBreakpointByName(name string, breakpoint *api.Breakpoint) error {
bp := s.debugger.FindBreakpointByName(name)
if bp == nil {
return fmt.Errorf("no breakpoint with name %s", name)
}
deleted, err := s.debugger.ClearBreakpoint(bp)
if err != nil {
return err
}
*breakpoint = *deleted
return nil
}
func (s *RPCServer) AmendBreakpoint(amend *api.Breakpoint, unused *int) error {
*unused = 0
return s.debugger.AmendBreakpoint(amend)
}
func (s *RPCServer) ListThreads(arg interface{}, threads *[]*api.Thread) (err error) {
*threads, err = s.debugger.Threads()
return err
}
func (s *RPCServer) GetThread(id int, thread *api.Thread) error {
t, err := s.debugger.FindThread(id)
if err != nil {
return err
}
if t == nil {
return fmt.Errorf("no thread with id %d", id)
}
*thread = *t
return nil
}
func (s *RPCServer) ListPackageVars(filter string, variables *[]api.Variable) error {
state, err := s.debugger.State()
if err != nil {
return err
}
current := state.CurrentThread
if current == nil {
return fmt.Errorf("no current thread")
}
vars, err := s.debugger.PackageVariables(current.ID, filter, defaultLoadConfig)
if err != nil {
return err
}
*variables = vars
return nil
}
type ThreadListArgs struct {
Id int
Filter string
}
func (s *RPCServer) ListThreadPackageVars(args *ThreadListArgs, variables *[]api.Variable) error {
thread, err := s.debugger.FindThread(args.Id)
if err != nil {
return err
}
if thread == nil {
return fmt.Errorf("no thread with id %d", args.Id)
}
vars, err := s.debugger.PackageVariables(args.Id, args.Filter, defaultLoadConfig)
if err != nil {
return err
}
*variables = vars
return nil
}
func (s *RPCServer) ListRegisters(arg interface{}, registers *string) error {
state, err := s.debugger.State()
if err != nil {
return err
}
regs, err := s.debugger.Registers(state.CurrentThread.ID, false)
if err != nil {
return err
}
*registers = regs.String()
return nil
}
func (s *RPCServer) ListLocalVars(scope api.EvalScope, variables *[]api.Variable) error {
vars, err := s.debugger.LocalVariables(scope, defaultLoadConfig)
if err != nil {
return err
}
*variables = vars
return nil
}
func (s *RPCServer) ListFunctionArgs(scope api.EvalScope, variables *[]api.Variable) error {
vars, err := s.debugger.FunctionArguments(scope, defaultLoadConfig)
if err != nil {
return err
}
*variables = vars
return nil
}
type EvalSymbolArgs struct {
Scope api.EvalScope
Symbol string
}
func (s *RPCServer) EvalSymbol(args EvalSymbolArgs, variable *api.Variable) error {
v, err := s.debugger.EvalVariableInScope(args.Scope, args.Symbol, defaultLoadConfig)
if err != nil {
return err
}
*variable = *v
return nil
}
type SetSymbolArgs struct {
Scope api.EvalScope
Symbol string
Value string
}
func (s *RPCServer) SetSymbol(args SetSymbolArgs, unused *int) error {
*unused = 0
return s.debugger.SetVariableInScope(args.Scope, args.Symbol, args.Value)
}
func (s *RPCServer) ListSources(filter string, sources *[]string) error {
ss, err := s.debugger.Sources(filter)
if err != nil {
return err
}
*sources = ss
return nil
}
func (s *RPCServer) ListFunctions(filter string, funcs *[]string) error {
fns, err := s.debugger.Functions(filter)
if err != nil {
return err
}
*funcs = fns
return nil
}
func (s *RPCServer) ListTypes(filter string, types *[]string) error {
tps, err := s.debugger.Types(filter)
if err != nil {
return err
}
*types = tps
return nil
}
func (s *RPCServer) ListGoroutines(arg interface{}, goroutines *[]*api.Goroutine) error {
gs, err := s.debugger.Goroutines()
if err != nil {
return err
}
*goroutines = gs
return nil
}
func (c *RPCServer) AttachedToExistingProcess(arg interface{}, answer *bool) error {
if c.config.AttachPid != 0 {
*answer = true
}
return nil
}
type FindLocationArgs struct {
Scope api.EvalScope
Loc string
}
func (c *RPCServer) FindLocation(args FindLocationArgs, answer *[]api.Location) error {
var err error
*answer, err = c.debugger.FindLocation(args.Scope, args.Loc)
return err
}
type DisassembleRequest struct {
Scope api.EvalScope
StartPC, EndPC uint64
Flavour api.AssemblyFlavour
}
func (c *RPCServer) Disassemble(args DisassembleRequest, answer *api.AsmInstructions) error {
var err error
*answer, err = c.debugger.Disassemble(args.Scope, args.StartPC, args.EndPC, args.Flavour)
return err
}

308
vendor/github.com/derekparker/delve/service/rpc2/client.go generated vendored Normal file
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@ -0,0 +1,308 @@
package rpc2
import (
"fmt"
"log"
"net/rpc"
"net/rpc/jsonrpc"
"time"
"github.com/derekparker/delve/service"
"github.com/derekparker/delve/service/api"
)
// Client is a RPC service.Client.
type RPCClient struct {
addr string
processPid int
client *rpc.Client
}
// Ensure the implementation satisfies the interface.
var _ service.Client = &RPCClient{}
// NewClient creates a new RPCClient.
func NewClient(addr string) *RPCClient {
client, err := jsonrpc.Dial("tcp", addr)
if err != nil {
log.Fatal("dialing:", err)
}
c := &RPCClient{addr: addr, client: client}
c.call("SetApiVersion", api.SetAPIVersionIn{2}, &api.SetAPIVersionOut{})
return c
}
func (c *RPCClient) ProcessPid() int {
out := new(ProcessPidOut)
c.call("ProcessPid", ProcessPidIn{}, out)
return out.Pid
}
func (c *RPCClient) LastModified() time.Time {
out := new(LastModifiedOut)
c.call("LastModified", LastModifiedIn{}, out)
return out.Time
}
func (c *RPCClient) Detach(kill bool) error {
out := new(DetachOut)
return c.call("Detach", DetachIn{kill}, out)
}
func (c *RPCClient) Restart() ([]api.DiscardedBreakpoint, error) {
out := new(RestartOut)
err := c.call("Restart", RestartIn{}, out)
return out.DiscardedBreakpoints, err
}
func (c *RPCClient) GetState() (*api.DebuggerState, error) {
var out StateOut
err := c.call("State", StateIn{}, &out)
return out.State, err
}
func (c *RPCClient) Continue() <-chan *api.DebuggerState {
ch := make(chan *api.DebuggerState)
go func() {
for {
out := new(CommandOut)
err := c.call("Command", &api.DebuggerCommand{Name: api.Continue}, &out)
state := out.State
if err != nil {
state.Err = err
}
if state.Exited {
// Error types apparantly cannot be marshalled by Go correctly. Must reset error here.
state.Err = fmt.Errorf("Process %d has exited with status %d", c.ProcessPid(), state.ExitStatus)
}
ch <- &state
if err != nil || state.Exited {
close(ch)
return
}
isbreakpoint := false
istracepoint := true
for i := range state.Threads {
if state.Threads[i].Breakpoint != nil {
isbreakpoint = true
istracepoint = istracepoint && state.Threads[i].Breakpoint.Tracepoint
}
}
if !isbreakpoint || !istracepoint {
close(ch)
return
}
}
}()
return ch
}
func (c *RPCClient) Next() (*api.DebuggerState, error) {
var out CommandOut
err := c.call("Command", api.DebuggerCommand{Name: api.Next}, &out)
return &out.State, err
}
func (c *RPCClient) Step() (*api.DebuggerState, error) {
var out CommandOut
err := c.call("Command", api.DebuggerCommand{Name: api.Step}, &out)
return &out.State, err
}
func (c *RPCClient) StepOut() (*api.DebuggerState, error) {
var out CommandOut
err := c.call("Command", &api.DebuggerCommand{Name: api.StepOut}, &out)
return &out.State, err
}
func (c *RPCClient) StepInstruction() (*api.DebuggerState, error) {
var out CommandOut
err := c.call("Command", api.DebuggerCommand{Name: api.StepInstruction}, &out)
return &out.State, err
}
func (c *RPCClient) SwitchThread(threadID int) (*api.DebuggerState, error) {
var out CommandOut
cmd := api.DebuggerCommand{
Name: api.SwitchThread,
ThreadID: threadID,
}
err := c.call("Command", cmd, &out)
return &out.State, err
}
func (c *RPCClient) SwitchGoroutine(goroutineID int) (*api.DebuggerState, error) {
var out CommandOut
cmd := api.DebuggerCommand{
Name: api.SwitchGoroutine,
GoroutineID: goroutineID,
}
err := c.call("Command", cmd, &out)
return &out.State, err
}
func (c *RPCClient) Halt() (*api.DebuggerState, error) {
var out CommandOut
err := c.call("Command", api.DebuggerCommand{Name: api.Halt}, &out)
return &out.State, err
}
func (c *RPCClient) GetBreakpoint(id int) (*api.Breakpoint, error) {
var out GetBreakpointOut
err := c.call("GetBreakpoint", GetBreakpointIn{id, ""}, &out)
return &out.Breakpoint, err
}
func (c *RPCClient) GetBreakpointByName(name string) (*api.Breakpoint, error) {
var out GetBreakpointOut
err := c.call("GetBreakpoint", GetBreakpointIn{0, name}, &out)
return &out.Breakpoint, err
}
func (c *RPCClient) CreateBreakpoint(breakPoint *api.Breakpoint) (*api.Breakpoint, error) {
var out CreateBreakpointOut
err := c.call("CreateBreakpoint", CreateBreakpointIn{*breakPoint}, &out)
return &out.Breakpoint, err
}
func (c *RPCClient) ListBreakpoints() ([]*api.Breakpoint, error) {
var out ListBreakpointsOut
err := c.call("ListBreakpoints", ListBreakpointsIn{}, &out)
return out.Breakpoints, err
}
func (c *RPCClient) ClearBreakpoint(id int) (*api.Breakpoint, error) {
var out ClearBreakpointOut
err := c.call("ClearBreakpoint", ClearBreakpointIn{id, ""}, &out)
return out.Breakpoint, err
}
func (c *RPCClient) ClearBreakpointByName(name string) (*api.Breakpoint, error) {
var out ClearBreakpointOut
err := c.call("ClearBreakpoint", ClearBreakpointIn{0, name}, &out)
return out.Breakpoint, err
}
func (c *RPCClient) AmendBreakpoint(bp *api.Breakpoint) error {
out := new(AmendBreakpointOut)
err := c.call("AmendBreakpoint", AmendBreakpointIn{*bp}, out)
return err
}
func (c *RPCClient) CancelNext() error {
var out CancelNextOut
return c.call("CancelNext", CancelNextIn{}, &out)
}
func (c *RPCClient) ListThreads() ([]*api.Thread, error) {
var out ListThreadsOut
err := c.call("ListThreads", ListThreadsIn{}, &out)
return out.Threads, err
}
func (c *RPCClient) GetThread(id int) (*api.Thread, error) {
var out GetThreadOut
err := c.call("GetThread", GetThreadIn{id}, &out)
return out.Thread, err
}
func (c *RPCClient) EvalVariable(scope api.EvalScope, expr string, cfg api.LoadConfig) (*api.Variable, error) {
var out EvalOut
err := c.call("Eval", EvalIn{scope, expr, &cfg}, &out)
return out.Variable, err
}
func (c *RPCClient) SetVariable(scope api.EvalScope, symbol, value string) error {
out := new(SetOut)
return c.call("Set", SetIn{scope, symbol, value}, out)
}
func (c *RPCClient) ListSources(filter string) ([]string, error) {
sources := new(ListSourcesOut)
err := c.call("ListSources", ListSourcesIn{filter}, sources)
return sources.Sources, err
}
func (c *RPCClient) ListFunctions(filter string) ([]string, error) {
funcs := new(ListFunctionsOut)
err := c.call("ListFunctions", ListFunctionsIn{filter}, funcs)
return funcs.Funcs, err
}
func (c *RPCClient) ListTypes(filter string) ([]string, error) {
types := new(ListTypesOut)
err := c.call("ListTypes", ListTypesIn{filter}, types)
return types.Types, err
}
func (c *RPCClient) ListPackageVariables(filter string, cfg api.LoadConfig) ([]api.Variable, error) {
var out ListPackageVarsOut
err := c.call("ListPackageVars", ListPackageVarsIn{filter, cfg}, &out)
return out.Variables, err
}
func (c *RPCClient) ListLocalVariables(scope api.EvalScope, cfg api.LoadConfig) ([]api.Variable, error) {
var out ListLocalVarsOut
err := c.call("ListLocalVars", ListLocalVarsIn{scope, cfg}, &out)
return out.Variables, err
}
func (c *RPCClient) ListRegisters(threadID int, includeFp bool) (api.Registers, error) {
out := new(ListRegistersOut)
err := c.call("ListRegisters", ListRegistersIn{ThreadID: threadID, IncludeFp: includeFp}, out)
return out.Regs, err
}
func (c *RPCClient) ListFunctionArgs(scope api.EvalScope, cfg api.LoadConfig) ([]api.Variable, error) {
var out ListFunctionArgsOut
err := c.call("ListFunctionArgs", ListFunctionArgsIn{scope, cfg}, &out)
return out.Args, err
}
func (c *RPCClient) ListGoroutines() ([]*api.Goroutine, error) {
var out ListGoroutinesOut
err := c.call("ListGoroutines", ListGoroutinesIn{}, &out)
return out.Goroutines, err
}
func (c *RPCClient) Stacktrace(goroutineId, depth int, cfg *api.LoadConfig) ([]api.Stackframe, error) {
var out StacktraceOut
err := c.call("Stacktrace", StacktraceIn{goroutineId, depth, false, cfg}, &out)
return out.Locations, err
}
func (c *RPCClient) AttachedToExistingProcess() bool {
out := new(AttachedToExistingProcessOut)
c.call("AttachedToExistingProcess", AttachedToExistingProcessIn{}, out)
return out.Answer
}
func (c *RPCClient) FindLocation(scope api.EvalScope, loc string) ([]api.Location, error) {
var out FindLocationOut
err := c.call("FindLocation", FindLocationIn{scope, loc}, &out)
return out.Locations, err
}
// Disassemble code between startPC and endPC
func (c *RPCClient) DisassembleRange(scope api.EvalScope, startPC, endPC uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
var out DisassembleOut
err := c.call("Disassemble", DisassembleIn{scope, startPC, endPC, flavour}, &out)
return out.Disassemble, err
}
// Disassemble function containing pc
func (c *RPCClient) DisassemblePC(scope api.EvalScope, pc uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error) {
var out DisassembleOut
err := c.call("Disassemble", DisassembleIn{scope, pc, 0, flavour}, &out)
return out.Disassemble, err
}
func (c *RPCClient) url(path string) string {
return fmt.Sprintf("http://%s%s", c.addr, path)
}
func (c *RPCClient) call(method string, args, reply interface{}) error {
return c.client.Call("RPCServer."+method, args, reply)
}

575
vendor/github.com/derekparker/delve/service/rpc2/server.go generated vendored Normal file
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package rpc2
import (
"errors"
"fmt"
"time"
"github.com/derekparker/delve/service"
"github.com/derekparker/delve/service/api"
"github.com/derekparker/delve/service/debugger"
)
type RPCServer struct {
// config is all the information necessary to start the debugger and server.
config *service.Config
// debugger is a debugger service.
debugger *debugger.Debugger
}
func NewServer(config *service.Config, debugger *debugger.Debugger) *RPCServer {
return &RPCServer{config, debugger}
}
type ProcessPidIn struct {
}
type ProcessPidOut struct {
Pid int
}
// ProcessPid returns the pid of the process we are debugging.
func (s *RPCServer) ProcessPid(arg ProcessPidIn, out *ProcessPidOut) error {
out.Pid = s.debugger.ProcessPid()
return nil
}
type LastModifiedIn struct {
}
type LastModifiedOut struct {
Time time.Time
}
func (s *RPCServer) LastModified(arg LastModifiedIn, out *LastModifiedOut) error {
out.Time = s.debugger.LastModified()
return nil
}
type DetachIn struct {
Kill bool
}
type DetachOut struct {
}
// Detach detaches the debugger, optionally killing the process.
func (s *RPCServer) Detach(arg DetachIn, out *DetachOut) error {
return s.debugger.Detach(arg.Kill)
}
type RestartIn struct {
}
type RestartOut struct {
DiscardedBreakpoints []api.DiscardedBreakpoint
}
// Restart restarts program.
func (s *RPCServer) Restart(arg RestartIn, out *RestartOut) error {
if s.config.AttachPid != 0 {
return errors.New("cannot restart process Delve did not create")
}
var err error
out.DiscardedBreakpoints, err = s.debugger.Restart()
return err
}
type StateIn struct {
}
type StateOut struct {
State *api.DebuggerState
}
// State returns the current debugger state.
func (s *RPCServer) State(arg StateIn, out *StateOut) error {
st, err := s.debugger.State()
if err != nil {
return err
}
out.State = st
return nil
}
type CommandOut struct {
State api.DebuggerState
}
// Command interrupts, continues and steps through the program.
func (s *RPCServer) Command(command api.DebuggerCommand, cb service.RPCCallback) {
st, err := s.debugger.Command(&command)
if err != nil {
cb.Return(nil, err)
return
}
var out CommandOut
out.State = *st
cb.Return(out, nil)
return
}
type GetBreakpointIn struct {
Id int
Name string
}
type GetBreakpointOut struct {
Breakpoint api.Breakpoint
}
// GetBreakpoint gets a breakpoint by Name (if Name is not an empty string) or by ID.
func (s *RPCServer) GetBreakpoint(arg GetBreakpointIn, out *GetBreakpointOut) error {
var bp *api.Breakpoint
if arg.Name != "" {
bp = s.debugger.FindBreakpointByName(arg.Name)
if bp == nil {
return fmt.Errorf("no breakpoint with name %s", arg.Name)
}
} else {
bp = s.debugger.FindBreakpoint(arg.Id)
if bp == nil {
return fmt.Errorf("no breakpoint with id %d", arg.Id)
}
}
out.Breakpoint = *bp
return nil
}
type StacktraceIn struct {
Id int
Depth int
Full bool
Cfg *api.LoadConfig
}
type StacktraceOut struct {
Locations []api.Stackframe
}
// Stacktrace returns stacktrace of goroutine Id up to the specified Depth.
//
// If Full is set it will also the variable of all local variables
// and function arguments of all stack frames.
func (s *RPCServer) Stacktrace(arg StacktraceIn, out *StacktraceOut) error {
cfg := arg.Cfg
if cfg == nil && arg.Full {
cfg = &api.LoadConfig{true, 1, 64, 64, -1}
}
locs, err := s.debugger.Stacktrace(arg.Id, arg.Depth, api.LoadConfigToProc(cfg))
if err != nil {
return err
}
out.Locations = locs
return nil
}
type ListBreakpointsIn struct {
}
type ListBreakpointsOut struct {
Breakpoints []*api.Breakpoint
}
// ListBreakpoints gets all breakpoints.
func (s *RPCServer) ListBreakpoints(arg ListBreakpointsIn, out *ListBreakpointsOut) error {
out.Breakpoints = s.debugger.Breakpoints()
return nil
}
type CreateBreakpointIn struct {
Breakpoint api.Breakpoint
}
type CreateBreakpointOut struct {
Breakpoint api.Breakpoint
}
// CreateBreakpoint creates a new breakpoint.
//
// - If arg.Breakpoint.File is not an empty string the breakpoint
// will be created on the specified file:line location
//
// - If arg.Breakpoint.FunctionName is not an empty string
// the breakpoint will be created on the specified function:line
// location. Note that setting a breakpoint on a function's entry point
// (line == 0) can have surprising consequences, it is advisable to
// use line = -1 instead which will skip the prologue.
//
// - Otherwise the value specified by arg.Breakpoint.Addr will be used.
func (s *RPCServer) CreateBreakpoint(arg CreateBreakpointIn, out *CreateBreakpointOut) error {
createdbp, err := s.debugger.CreateBreakpoint(&arg.Breakpoint)
if err != nil {
return err
}
out.Breakpoint = *createdbp
return nil
}
type ClearBreakpointIn struct {
Id int
Name string
}
type ClearBreakpointOut struct {
Breakpoint *api.Breakpoint
}
// ClearBreakpoint deletes a breakpoint by Name (if Name is not an
// empty string) or by ID.
func (s *RPCServer) ClearBreakpoint(arg ClearBreakpointIn, out *ClearBreakpointOut) error {
var bp *api.Breakpoint
if arg.Name != "" {
bp = s.debugger.FindBreakpointByName(arg.Name)
if bp == nil {
return fmt.Errorf("no breakpoint with name %s", arg.Name)
}
} else {
bp = s.debugger.FindBreakpoint(arg.Id)
if bp == nil {
return fmt.Errorf("no breakpoint with id %d", arg.Id)
}
}
deleted, err := s.debugger.ClearBreakpoint(bp)
if err != nil {
return err
}
out.Breakpoint = deleted
return nil
}
type AmendBreakpointIn struct {
Breakpoint api.Breakpoint
}
type AmendBreakpointOut struct {
}
// AmendBreakpoint allows user to update an existing breakpoint
// for example to change the information retrieved when the
// breakpoint is hit or to change, add or remove the break condition.
//
// arg.Breakpoint.ID must be a valid breakpoint ID
func (s *RPCServer) AmendBreakpoint(arg AmendBreakpointIn, out *AmendBreakpointOut) error {
return s.debugger.AmendBreakpoint(&arg.Breakpoint)
}
type CancelNextIn struct {
}
type CancelNextOut struct {
}
func (s *RPCServer) CancelNext(arg CancelNextIn, out *CancelNextOut) error {
return s.debugger.CancelNext()
}
type ListThreadsIn struct {
}
type ListThreadsOut struct {
Threads []*api.Thread
}
// ListThreads lists all threads.
func (s *RPCServer) ListThreads(arg ListThreadsIn, out *ListThreadsOut) (err error) {
out.Threads, err = s.debugger.Threads()
return err
}
type GetThreadIn struct {
Id int
}
type GetThreadOut struct {
Thread *api.Thread
}
// GetThread gets a thread by its ID.
func (s *RPCServer) GetThread(arg GetThreadIn, out *GetThreadOut) error {
t, err := s.debugger.FindThread(arg.Id)
if err != nil {
return err
}
if t == nil {
return fmt.Errorf("no thread with id %d", arg.Id)
}
out.Thread = t
return nil
}
type ListPackageVarsIn struct {
Filter string
Cfg api.LoadConfig
}
type ListPackageVarsOut struct {
Variables []api.Variable
}
// ListPackageVars lists all package variables in the context of the current thread.
func (s *RPCServer) ListPackageVars(arg ListPackageVarsIn, out *ListPackageVarsOut) error {
state, err := s.debugger.State()
if err != nil {
return err
}
current := state.CurrentThread
if current == nil {
return fmt.Errorf("no current thread")
}
vars, err := s.debugger.PackageVariables(current.ID, arg.Filter, *api.LoadConfigToProc(&arg.Cfg))
if err != nil {
return err
}
out.Variables = vars
return nil
}
type ListRegistersIn struct {
ThreadID int
IncludeFp bool
}
type ListRegistersOut struct {
Registers string
Regs api.Registers
}
// ListRegisters lists registers and their values.
func (s *RPCServer) ListRegisters(arg ListRegistersIn, out *ListRegistersOut) error {
if arg.ThreadID == 0 {
state, err := s.debugger.State()
if err != nil {
return err
}
arg.ThreadID = state.CurrentThread.ID
}
regs, err := s.debugger.Registers(arg.ThreadID, arg.IncludeFp)
if err != nil {
return err
}
out.Regs = regs
out.Registers = out.Regs.String()
return nil
}
type ListLocalVarsIn struct {
Scope api.EvalScope
Cfg api.LoadConfig
}
type ListLocalVarsOut struct {
Variables []api.Variable
}
// ListLocalVars lists all local variables in scope.
func (s *RPCServer) ListLocalVars(arg ListLocalVarsIn, out *ListLocalVarsOut) error {
vars, err := s.debugger.LocalVariables(arg.Scope, *api.LoadConfigToProc(&arg.Cfg))
if err != nil {
return err
}
out.Variables = vars
return nil
}
type ListFunctionArgsIn struct {
Scope api.EvalScope
Cfg api.LoadConfig
}
type ListFunctionArgsOut struct {
Args []api.Variable
}
// ListFunctionArgs lists all arguments to the current function
func (s *RPCServer) ListFunctionArgs(arg ListFunctionArgsIn, out *ListFunctionArgsOut) error {
vars, err := s.debugger.FunctionArguments(arg.Scope, *api.LoadConfigToProc(&arg.Cfg))
if err != nil {
return err
}
out.Args = vars
return nil
}
type EvalIn struct {
Scope api.EvalScope
Expr string
Cfg *api.LoadConfig
}
type EvalOut struct {
Variable *api.Variable
}
// EvalVariable returns a variable in the specified context.
//
// See https://github.com/derekparker/delve/wiki/Expressions for
// a description of acceptable values of arg.Expr.
func (s *RPCServer) Eval(arg EvalIn, out *EvalOut) error {
cfg := arg.Cfg
if cfg == nil {
cfg = &api.LoadConfig{true, 1, 64, 64, -1}
}
v, err := s.debugger.EvalVariableInScope(arg.Scope, arg.Expr, *api.LoadConfigToProc(cfg))
if err != nil {
return err
}
out.Variable = v
return nil
}
type SetIn struct {
Scope api.EvalScope
Symbol string
Value string
}
type SetOut struct {
}
// Set sets the value of a variable. Only numerical types and
// pointers are currently supported.
func (s *RPCServer) Set(arg SetIn, out *SetOut) error {
return s.debugger.SetVariableInScope(arg.Scope, arg.Symbol, arg.Value)
}
type ListSourcesIn struct {
Filter string
}
type ListSourcesOut struct {
Sources []string
}
// ListSources lists all source files in the process matching filter.
func (s *RPCServer) ListSources(arg ListSourcesIn, out *ListSourcesOut) error {
ss, err := s.debugger.Sources(arg.Filter)
if err != nil {
return err
}
out.Sources = ss
return nil
}
type ListFunctionsIn struct {
Filter string
}
type ListFunctionsOut struct {
Funcs []string
}
// ListFunctions lists all functions in the process matching filter.
func (s *RPCServer) ListFunctions(arg ListFunctionsIn, out *ListFunctionsOut) error {
fns, err := s.debugger.Functions(arg.Filter)
if err != nil {
return err
}
out.Funcs = fns
return nil
}
type ListTypesIn struct {
Filter string
}
type ListTypesOut struct {
Types []string
}
// ListTypes lists all types in the process matching filter.
func (s *RPCServer) ListTypes(arg ListTypesIn, out *ListTypesOut) error {
tps, err := s.debugger.Types(arg.Filter)
if err != nil {
return err
}
out.Types = tps
return nil
}
type ListGoroutinesIn struct {
}
type ListGoroutinesOut struct {
Goroutines []*api.Goroutine
}
// ListGoroutines lists all goroutines.
func (s *RPCServer) ListGoroutines(arg ListGoroutinesIn, out *ListGoroutinesOut) error {
gs, err := s.debugger.Goroutines()
if err != nil {
return err
}
out.Goroutines = gs
return nil
}
type AttachedToExistingProcessIn struct {
}
type AttachedToExistingProcessOut struct {
Answer bool
}
// AttachedToExistingProcess returns whether we attached to a running process or not
func (c *RPCServer) AttachedToExistingProcess(arg AttachedToExistingProcessIn, out *AttachedToExistingProcessOut) error {
if c.config.AttachPid != 0 {
out.Answer = true
}
return nil
}
type FindLocationIn struct {
Scope api.EvalScope
Loc string
}
type FindLocationOut struct {
Locations []api.Location
}
// FindLocation returns concrete location information described by a location expression
//
// loc ::= <filename>:<line> | <function>[:<line>] | /<regex>/ | (+|-)<offset> | <line> | *<address>
// * <filename> can be the full path of a file or just a suffix
// * <function> ::= <package>.<receiver type>.<name> | <package>.(*<receiver type>).<name> | <receiver type>.<name> | <package>.<name> | (*<receiver type>).<name> | <name>
// * <function> must be unambiguous
// * /<regex>/ will return a location for each function matched by regex
// * +<offset> returns a location for the line that is <offset> lines after the current line
// * -<offset> returns a location for the line that is <offset> lines before the current line
// * <line> returns a location for a line in the current file
// * *<address> returns the location corresponding to the specified address
//
// NOTE: this function does not actually set breakpoints.
func (c *RPCServer) FindLocation(arg FindLocationIn, out *FindLocationOut) error {
var err error
out.Locations, err = c.debugger.FindLocation(arg.Scope, arg.Loc)
return err
}
type DisassembleIn struct {
Scope api.EvalScope
StartPC, EndPC uint64
Flavour api.AssemblyFlavour
}
type DisassembleOut struct {
Disassemble api.AsmInstructions
}
// Disassemble code.
//
// If both StartPC and EndPC are non-zero the specified range will be disassembled, otherwise the function containing StartPC will be disassembled.
//
// Scope is used to mark the instruction the specified gorutine is stopped at.
//
// Disassemble will also try to calculate the destination address of an absolute indirect CALL if it happens to be the instruction the selected goroutine is stopped at.
func (c *RPCServer) Disassemble(arg DisassembleIn, out *DisassembleOut) error {
var err error
out.Disassemble, err = c.debugger.Disassemble(arg.Scope, arg.StartPC, arg.EndPC, arg.Flavour)
return err
}

6
vendor/github.com/derekparker/delve/service/rpccallback.go generated vendored Normal file
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package service
// RPCCallback is used by RPC methods to return their result asynchronously.
type RPCCallback interface {
Return(out interface{}, err error)
}

409
vendor/github.com/derekparker/delve/service/rpccommon/server.go generated vendored Normal file
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package rpccommon
import (
"bytes"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/rpc"
"net/rpc/jsonrpc"
"reflect"
"runtime"
"sync"
"unicode"
"unicode/utf8"
"github.com/derekparker/delve/pkg/version"
"github.com/derekparker/delve/service"
"github.com/derekparker/delve/service/api"
"github.com/derekparker/delve/service/debugger"
"github.com/derekparker/delve/service/rpc1"
"github.com/derekparker/delve/service/rpc2"
)
// ServerImpl implements a JSON-RPC server that can switch between two
// versions of the API.
type ServerImpl struct {
// config is all the information necessary to start the debugger and server.
config *service.Config
// listener is used to serve HTTP.
listener net.Listener
// stopChan is used to stop the listener goroutine.
stopChan chan struct{}
// debugger is the debugger service.
debugger *debugger.Debugger
// s1 is APIv1 server.
s1 *rpc1.RPCServer
// s2 is APIv2 server.
s2 *rpc2.RPCServer
// maps of served methods, one for each supported API.
methodMaps []map[string]*methodType
}
type RPCCallback struct {
s *ServerImpl
sending *sync.Mutex
codec rpc.ServerCodec
req rpc.Request
}
// RPCServer implements the RPC method calls common to all versions of the API.
type RPCServer struct {
s *ServerImpl
}
type methodType struct {
method reflect.Method
Rcvr reflect.Value
ArgType reflect.Type
ReplyType reflect.Type
Synchronous bool
}
// NewServer creates a new RPCServer.
func NewServer(config *service.Config, logEnabled bool) *ServerImpl {
log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)
if !logEnabled {
log.SetOutput(ioutil.Discard)
}
if config.APIVersion < 2 {
log.Printf("Using API v1")
}
return &ServerImpl{
config: config,
listener: config.Listener,
stopChan: make(chan struct{}),
}
}
// Stop stops the JSON-RPC server.
func (s *ServerImpl) Stop(kill bool) error {
if s.config.AcceptMulti {
close(s.stopChan)
s.listener.Close()
}
return s.debugger.Detach(kill)
}
// Restart restarts the debugger.
func (s *ServerImpl) Restart() error {
if s.config.AttachPid != 0 {
return errors.New("cannot restart process Delve did not create")
}
return s.s2.Restart(rpc2.RestartIn{}, nil)
}
// Run starts a debugger and exposes it with an HTTP server. The debugger
// itself can be stopped with the `detach` API. Run blocks until the HTTP
// server stops.
func (s *ServerImpl) Run() error {
var err error
if s.config.APIVersion < 2 {
s.config.APIVersion = 1
}
if s.config.APIVersion > 2 {
return fmt.Errorf("unknown API version")
}
// Create and start the debugger
if s.debugger, err = debugger.New(&debugger.Config{
ProcessArgs: s.config.ProcessArgs,
AttachPid: s.config.AttachPid,
WorkingDir: s.config.WorkingDir,
}); err != nil {
return err
}
s.s1 = rpc1.NewServer(s.config, s.debugger)
s.s2 = rpc2.NewServer(s.config, s.debugger)
rpcServer := &RPCServer{s}
s.methodMaps = make([]map[string]*methodType, 2)
s.methodMaps[0] = map[string]*methodType{}
s.methodMaps[1] = map[string]*methodType{}
suitableMethods(s.s1, s.methodMaps[0])
suitableMethods(rpcServer, s.methodMaps[0])
suitableMethods(s.s2, s.methodMaps[1])
suitableMethods(rpcServer, s.methodMaps[1])
go func() {
defer s.listener.Close()
for {
c, err := s.listener.Accept()
if err != nil {
select {
case <-s.stopChan:
// We were supposed to exit, do nothing and return
return
default:
panic(err)
}
}
go s.serveJSONCodec(c)
if !s.config.AcceptMulti {
break
}
}
}()
return nil
}
// Precompute the reflect type for error. Can't use error directly
// because Typeof takes an empty interface value. This is annoying.
var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
// Is this an exported - upper case - name?
func isExported(name string) bool {
rune, _ := utf8.DecodeRuneInString(name)
return unicode.IsUpper(rune)
}
// Is this type exported or a builtin?
func isExportedOrBuiltinType(t reflect.Type) bool {
for t.Kind() == reflect.Ptr {
t = t.Elem()
}
// PkgPath will be non-empty even for an exported type,
// so we need to check the type name as well.
return isExported(t.Name()) || t.PkgPath() == ""
}
// Fills methods map with the methods of receiver that should be made
// available through the RPC interface.
// These are all the public methods of rcvr that have one of those
// two signatures:
// func (rcvr ReceiverType) Method(in InputType, out *ReplyType) error
// func (rcvr ReceiverType) Method(in InputType, cb service.RPCCallback)
func suitableMethods(rcvr interface{}, methods map[string]*methodType) {
typ := reflect.TypeOf(rcvr)
rcvrv := reflect.ValueOf(rcvr)
sname := reflect.Indirect(rcvrv).Type().Name()
if sname == "" {
log.Printf("rpc.Register: no service name for type %s", typ)
return
}
for m := 0; m < typ.NumMethod(); m++ {
method := typ.Method(m)
mname := method.Name
mtype := method.Type
// method must be exported
if method.PkgPath != "" {
continue
}
// Method needs three ins: (receive, *args, *reply) or (receiver, *args, *RPCCallback)
if mtype.NumIn() != 3 {
log.Println("method", mname, "has wrong number of ins:", mtype.NumIn())
continue
}
// First arg need not be a pointer.
argType := mtype.In(1)
if !isExportedOrBuiltinType(argType) {
log.Println(mname, "argument type not exported:", argType)
continue
}
replyType := mtype.In(2)
synchronous := replyType.String() != "service.RPCCallback"
if synchronous {
// Second arg must be a pointer.
if replyType.Kind() != reflect.Ptr {
log.Println("method", mname, "reply type not a pointer:", replyType)
continue
}
// Reply type must be exported.
if !isExportedOrBuiltinType(replyType) {
log.Println("method", mname, "reply type not exported:", replyType)
continue
}
// Method needs one out.
if mtype.NumOut() != 1 {
log.Println("method", mname, "has wrong number of outs:", mtype.NumOut())
continue
}
// The return type of the method must be error.
if returnType := mtype.Out(0); returnType != typeOfError {
log.Println("method", mname, "returns", returnType.String(), "not error")
continue
}
} else {
// Method needs zero outs.
if mtype.NumOut() != 0 {
log.Println("method", mname, "has wrong number of outs:", mtype.NumOut())
continue
}
}
methods[sname+"."+mname] = &methodType{method: method, ArgType: argType, ReplyType: replyType, Synchronous: synchronous, Rcvr: rcvrv}
}
return
}
func (s *ServerImpl) serveJSONCodec(conn io.ReadWriteCloser) {
sending := new(sync.Mutex)
codec := jsonrpc.NewServerCodec(conn)
var req rpc.Request
var resp rpc.Response
for {
req = rpc.Request{}
err := codec.ReadRequestHeader(&req)
if err != nil {
if err != io.EOF {
log.Println("rpc:", err)
}
break
}
mtype, ok := s.methodMaps[s.config.APIVersion-1][req.ServiceMethod]
if !ok {
log.Printf("rpc: can't find method %s", req.ServiceMethod)
continue
}
var argv, replyv reflect.Value
// Decode the argument value.
argIsValue := false // if true, need to indirect before calling.
if mtype.ArgType.Kind() == reflect.Ptr {
argv = reflect.New(mtype.ArgType.Elem())
} else {
argv = reflect.New(mtype.ArgType)
argIsValue = true
}
// argv guaranteed to be a pointer now.
if err = codec.ReadRequestBody(argv.Interface()); err != nil {
return
}
if argIsValue {
argv = argv.Elem()
}
if mtype.Synchronous {
replyv = reflect.New(mtype.ReplyType.Elem())
function := mtype.method.Func
var returnValues []reflect.Value
var errInter interface{}
func() {
defer func() {
if ierr := recover(); ierr != nil {
errInter = newInternalError(ierr, 2)
}
}()
returnValues = function.Call([]reflect.Value{mtype.Rcvr, argv, replyv})
errInter = returnValues[0].Interface()
}()
errmsg := ""
if errInter != nil {
errmsg = errInter.(error).Error()
}
resp = rpc.Response{}
s.sendResponse(sending, &req, &resp, replyv.Interface(), codec, errmsg)
} else {
function := mtype.method.Func
ctl := &RPCCallback{s, sending, codec, req}
go func() {
defer func() {
if ierr := recover(); ierr != nil {
ctl.Return(nil, newInternalError(ierr, 2))
}
}()
function.Call([]reflect.Value{mtype.Rcvr, argv, reflect.ValueOf(ctl)})
}()
}
}
codec.Close()
}
// A value sent as a placeholder for the server's response value when the server
// receives an invalid request. It is never decoded by the client since the Response
// contains an error when it is used.
var invalidRequest = struct{}{}
func (s *ServerImpl) sendResponse(sending *sync.Mutex, req *rpc.Request, resp *rpc.Response, reply interface{}, codec rpc.ServerCodec, errmsg string) {
resp.ServiceMethod = req.ServiceMethod
if errmsg != "" {
resp.Error = errmsg
reply = invalidRequest
}
resp.Seq = req.Seq
sending.Lock()
defer sending.Unlock()
err := codec.WriteResponse(resp, reply)
if err != nil {
log.Println("rpc: writing response:", err)
}
}
func (cb *RPCCallback) Return(out interface{}, err error) {
errmsg := ""
if err != nil {
errmsg = err.Error()
}
var resp rpc.Response
cb.s.sendResponse(cb.sending, &cb.req, &resp, out, cb.codec, errmsg)
}
// GetVersion returns the version of delve as well as the API version
// currently served.
func (s *RPCServer) GetVersion(args api.GetVersionIn, out *api.GetVersionOut) error {
out.DelveVersion = version.DelveVersion.String()
out.APIVersion = s.s.config.APIVersion
return nil
}
// Changes version of the API being served.
func (s *RPCServer) SetApiVersion(args api.SetAPIVersionIn, out *api.SetAPIVersionOut) error {
if args.APIVersion < 2 {
args.APIVersion = 1
}
if args.APIVersion > 2 {
return fmt.Errorf("unknown API version")
}
s.s.config.APIVersion = args.APIVersion
return nil
}
type internalError struct {
Err interface{}
Stack []internalErrorFrame
}
type internalErrorFrame struct {
Pc uintptr
Func string
File string
Line int
}
func newInternalError(ierr interface{}, skip int) *internalError {
r := &internalError{ierr, nil}
for i := skip; ; i++ {
pc, file, line, ok := runtime.Caller(i)
if !ok {
break
}
fname := "<unknown>"
fn := runtime.FuncForPC(pc)
if fn != nil {
fname = fn.Name()
}
r.Stack = append(r.Stack, internalErrorFrame{pc, fname, file, line})
}
return r
}
func (err *internalError) Error() string {
var out bytes.Buffer
fmt.Fprintf(&out, "Internal debugger error: %v\n", err.Err)
for _, frame := range err.Stack {
fmt.Fprintf(&out, "%s (%#x)\n\t%s:%d\n", frame.Func, frame.Pc, frame.File, frame.Line)
}
return out.String()
}

8
vendor/github.com/derekparker/delve/service/server.go generated vendored Normal file
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@ -0,0 +1,8 @@
package service
// Server represents a server for a remote client
// to connect to.
type Server interface {
Run() error
Stop(bool) error
}

21
vendor/github.com/mattn/go-colorable/LICENSE generated vendored Normal file
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2016 Yasuhiro Matsumoto
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

43
vendor/github.com/mattn/go-colorable/README.md generated vendored Normal file
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@ -0,0 +1,43 @@
# go-colorable
Colorable writer for windows.
For example, most of logger packages doesn't show colors on windows. (I know we can do it with ansicon. But I don't want.)
This package is possible to handle escape sequence for ansi color on windows.
## Too Bad!
![](https://raw.githubusercontent.com/mattn/go-colorable/gh-pages/bad.png)
## So Good!
![](https://raw.githubusercontent.com/mattn/go-colorable/gh-pages/good.png)
## Usage
```go
logrus.SetFormatter(&logrus.TextFormatter{ForceColors: true})
logrus.SetOutput(colorable.NewColorableStdout())
logrus.Info("succeeded")
logrus.Warn("not correct")
logrus.Error("something error")
logrus.Fatal("panic")
```
You can compile above code on non-windows OSs.
## Installation
```
$ go get github.com/mattn/go-colorable
```
# License
MIT
# Author
Yasuhiro Matsumoto (a.k.a mattn)

24
vendor/github.com/mattn/go-colorable/colorable_others.go generated vendored Normal file
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@ -0,0 +1,24 @@
// +build !windows
package colorable
import (
"io"
"os"
)
func NewColorable(file *os.File) io.Writer {
if file == nil {
panic("nil passed instead of *os.File to NewColorable()")
}
return file
}
func NewColorableStdout() io.Writer {
return os.Stdout
}
func NewColorableStderr() io.Writer {
return os.Stderr
}

783
vendor/github.com/mattn/go-colorable/colorable_windows.go generated vendored Normal file
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@ -0,0 +1,783 @@
package colorable
import (
"bytes"
"fmt"
"io"
"math"
"os"
"strconv"
"strings"
"syscall"
"unsafe"
"github.com/mattn/go-isatty"
)
const (
foregroundBlue = 0x1
foregroundGreen = 0x2
foregroundRed = 0x4
foregroundIntensity = 0x8
foregroundMask = (foregroundRed | foregroundBlue | foregroundGreen | foregroundIntensity)
backgroundBlue = 0x10
backgroundGreen = 0x20
backgroundRed = 0x40
backgroundIntensity = 0x80
backgroundMask = (backgroundRed | backgroundBlue | backgroundGreen | backgroundIntensity)
)
type wchar uint16
type short int16
type dword uint32
type word uint16
type coord struct {
x short
y short
}
type smallRect struct {
left short
top short
right short
bottom short
}
type consoleScreenBufferInfo struct {
size coord
cursorPosition coord
attributes word
window smallRect
maximumWindowSize coord
}
var (
kernel32 = syscall.NewLazyDLL("kernel32.dll")
procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
procSetConsoleTextAttribute = kernel32.NewProc("SetConsoleTextAttribute")
procSetConsoleCursorPosition = kernel32.NewProc("SetConsoleCursorPosition")
procFillConsoleOutputCharacter = kernel32.NewProc("FillConsoleOutputCharacterW")
procFillConsoleOutputAttribute = kernel32.NewProc("FillConsoleOutputAttribute")
)
type Writer struct {
out io.Writer
handle syscall.Handle
lastbuf bytes.Buffer
oldattr word
}
func NewColorable(file *os.File) io.Writer {
if file == nil {
panic("nil passed instead of *os.File to NewColorable()")
}
if isatty.IsTerminal(file.Fd()) {
var csbi consoleScreenBufferInfo
handle := syscall.Handle(file.Fd())
procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
return &Writer{out: file, handle: handle, oldattr: csbi.attributes}
} else {
return file
}
}
func NewColorableStdout() io.Writer {
return NewColorable(os.Stdout)
}
func NewColorableStderr() io.Writer {
return NewColorable(os.Stderr)
}
var color256 = map[int]int{
0: 0x000000,
1: 0x800000,
2: 0x008000,
3: 0x808000,
4: 0x000080,
5: 0x800080,
6: 0x008080,
7: 0xc0c0c0,
8: 0x808080,
9: 0xff0000,
10: 0x00ff00,
11: 0xffff00,
12: 0x0000ff,
13: 0xff00ff,
14: 0x00ffff,
15: 0xffffff,
16: 0x000000,
17: 0x00005f,
18: 0x000087,
19: 0x0000af,
20: 0x0000d7,
21: 0x0000ff,
22: 0x005f00,
23: 0x005f5f,
24: 0x005f87,
25: 0x005faf,
26: 0x005fd7,
27: 0x005fff,
28: 0x008700,
29: 0x00875f,
30: 0x008787,
31: 0x0087af,
32: 0x0087d7,
33: 0x0087ff,
34: 0x00af00,
35: 0x00af5f,
36: 0x00af87,
37: 0x00afaf,
38: 0x00afd7,
39: 0x00afff,
40: 0x00d700,
41: 0x00d75f,
42: 0x00d787,
43: 0x00d7af,
44: 0x00d7d7,
45: 0x00d7ff,
46: 0x00ff00,
47: 0x00ff5f,
48: 0x00ff87,
49: 0x00ffaf,
50: 0x00ffd7,
51: 0x00ffff,
52: 0x5f0000,
53: 0x5f005f,
54: 0x5f0087,
55: 0x5f00af,
56: 0x5f00d7,
57: 0x5f00ff,
58: 0x5f5f00,
59: 0x5f5f5f,
60: 0x5f5f87,
61: 0x5f5faf,
62: 0x5f5fd7,
63: 0x5f5fff,
64: 0x5f8700,
65: 0x5f875f,
66: 0x5f8787,
67: 0x5f87af,
68: 0x5f87d7,
69: 0x5f87ff,
70: 0x5faf00,
71: 0x5faf5f,
72: 0x5faf87,
73: 0x5fafaf,
74: 0x5fafd7,
75: 0x5fafff,
76: 0x5fd700,
77: 0x5fd75f,
78: 0x5fd787,
79: 0x5fd7af,
80: 0x5fd7d7,
81: 0x5fd7ff,
82: 0x5fff00,
83: 0x5fff5f,
84: 0x5fff87,
85: 0x5fffaf,
86: 0x5fffd7,
87: 0x5fffff,
88: 0x870000,
89: 0x87005f,
90: 0x870087,
91: 0x8700af,
92: 0x8700d7,
93: 0x8700ff,
94: 0x875f00,
95: 0x875f5f,
96: 0x875f87,
97: 0x875faf,
98: 0x875fd7,
99: 0x875fff,
100: 0x878700,
101: 0x87875f,
102: 0x878787,
103: 0x8787af,
104: 0x8787d7,
105: 0x8787ff,
106: 0x87af00,
107: 0x87af5f,
108: 0x87af87,
109: 0x87afaf,
110: 0x87afd7,
111: 0x87afff,
112: 0x87d700,
113: 0x87d75f,
114: 0x87d787,
115: 0x87d7af,
116: 0x87d7d7,
117: 0x87d7ff,
118: 0x87ff00,
119: 0x87ff5f,
120: 0x87ff87,
121: 0x87ffaf,
122: 0x87ffd7,
123: 0x87ffff,
124: 0xaf0000,
125: 0xaf005f,
126: 0xaf0087,
127: 0xaf00af,
128: 0xaf00d7,
129: 0xaf00ff,
130: 0xaf5f00,
131: 0xaf5f5f,
132: 0xaf5f87,
133: 0xaf5faf,
134: 0xaf5fd7,
135: 0xaf5fff,
136: 0xaf8700,
137: 0xaf875f,
138: 0xaf8787,
139: 0xaf87af,
140: 0xaf87d7,
141: 0xaf87ff,
142: 0xafaf00,
143: 0xafaf5f,
144: 0xafaf87,
145: 0xafafaf,
146: 0xafafd7,
147: 0xafafff,
148: 0xafd700,
149: 0xafd75f,
150: 0xafd787,
151: 0xafd7af,
152: 0xafd7d7,
153: 0xafd7ff,
154: 0xafff00,
155: 0xafff5f,
156: 0xafff87,
157: 0xafffaf,
158: 0xafffd7,
159: 0xafffff,
160: 0xd70000,
161: 0xd7005f,
162: 0xd70087,
163: 0xd700af,
164: 0xd700d7,
165: 0xd700ff,
166: 0xd75f00,
167: 0xd75f5f,
168: 0xd75f87,
169: 0xd75faf,
170: 0xd75fd7,
171: 0xd75fff,
172: 0xd78700,
173: 0xd7875f,
174: 0xd78787,
175: 0xd787af,
176: 0xd787d7,
177: 0xd787ff,
178: 0xd7af00,
179: 0xd7af5f,
180: 0xd7af87,
181: 0xd7afaf,
182: 0xd7afd7,
183: 0xd7afff,
184: 0xd7d700,
185: 0xd7d75f,
186: 0xd7d787,
187: 0xd7d7af,
188: 0xd7d7d7,
189: 0xd7d7ff,
190: 0xd7ff00,
191: 0xd7ff5f,
192: 0xd7ff87,
193: 0xd7ffaf,
194: 0xd7ffd7,
195: 0xd7ffff,
196: 0xff0000,
197: 0xff005f,
198: 0xff0087,
199: 0xff00af,
200: 0xff00d7,
201: 0xff00ff,
202: 0xff5f00,
203: 0xff5f5f,
204: 0xff5f87,
205: 0xff5faf,
206: 0xff5fd7,
207: 0xff5fff,
208: 0xff8700,
209: 0xff875f,
210: 0xff8787,
211: 0xff87af,
212: 0xff87d7,
213: 0xff87ff,
214: 0xffaf00,
215: 0xffaf5f,
216: 0xffaf87,
217: 0xffafaf,
218: 0xffafd7,
219: 0xffafff,
220: 0xffd700,
221: 0xffd75f,
222: 0xffd787,
223: 0xffd7af,
224: 0xffd7d7,
225: 0xffd7ff,
226: 0xffff00,
227: 0xffff5f,
228: 0xffff87,
229: 0xffffaf,
230: 0xffffd7,
231: 0xffffff,
232: 0x080808,
233: 0x121212,
234: 0x1c1c1c,
235: 0x262626,
236: 0x303030,
237: 0x3a3a3a,
238: 0x444444,
239: 0x4e4e4e,
240: 0x585858,
241: 0x626262,
242: 0x6c6c6c,
243: 0x767676,
244: 0x808080,
245: 0x8a8a8a,
246: 0x949494,
247: 0x9e9e9e,
248: 0xa8a8a8,
249: 0xb2b2b2,
250: 0xbcbcbc,
251: 0xc6c6c6,
252: 0xd0d0d0,
253: 0xdadada,
254: 0xe4e4e4,
255: 0xeeeeee,
}
func (w *Writer) Write(data []byte) (n int, err error) {
var csbi consoleScreenBufferInfo
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
er := bytes.NewBuffer(data)
loop:
for {
r1, _, err := procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
if r1 == 0 {
break loop
}
c1, _, err := er.ReadRune()
if err != nil {
break loop
}
if c1 != 0x1b {
fmt.Fprint(w.out, string(c1))
continue
}
c2, _, err := er.ReadRune()
if err != nil {
w.lastbuf.WriteRune(c1)
break loop
}
if c2 != 0x5b {
w.lastbuf.WriteRune(c1)
w.lastbuf.WriteRune(c2)
continue
}
var buf bytes.Buffer
var m rune
for {
c, _, err := er.ReadRune()
if err != nil {
w.lastbuf.WriteRune(c1)
w.lastbuf.WriteRune(c2)
w.lastbuf.Write(buf.Bytes())
break loop
}
if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
m = c
break
}
buf.Write([]byte(string(c)))
}
var csbi consoleScreenBufferInfo
switch m {
case 'A':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.y -= short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'B':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.y += short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'C':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.x -= short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'D':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
if n, err = strconv.Atoi(buf.String()); err == nil {
var csbi consoleScreenBufferInfo
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.x += short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
}
case 'E':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.x = 0
csbi.cursorPosition.y += short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'F':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.x = 0
csbi.cursorPosition.y -= short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'G':
n, err = strconv.Atoi(buf.String())
if err != nil {
continue
}
procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
csbi.cursorPosition.x = short(n)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'H':
token := strings.Split(buf.String(), ";")
if len(token) != 2 {
continue
}
n1, err := strconv.Atoi(token[0])
if err != nil {
continue
}
n2, err := strconv.Atoi(token[1])
if err != nil {
continue
}
csbi.cursorPosition.x = short(n2)
csbi.cursorPosition.x = short(n1)
procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
case 'J':
n, err := strconv.Atoi(buf.String())
if err != nil {
continue
}
var cursor coord
switch n {
case 0:
cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
case 1:
cursor = coord{x: csbi.window.left, y: csbi.window.top}
case 2:
cursor = coord{x: csbi.window.left, y: csbi.window.top}
}
var count, written dword
count = dword(csbi.size.x - csbi.cursorPosition.x + (csbi.size.y-csbi.cursorPosition.y)*csbi.size.x)
procFillConsoleOutputCharacter.Call(uintptr(w.handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
procFillConsoleOutputAttribute.Call(uintptr(w.handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
case 'K':
n, err := strconv.Atoi(buf.String())
if err != nil {
continue
}
var cursor coord
switch n {
case 0:
cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
case 1:
cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
case 2:
cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
}
var count, written dword
count = dword(csbi.size.x - csbi.cursorPosition.x)
procFillConsoleOutputCharacter.Call(uintptr(w.handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
procFillConsoleOutputAttribute.Call(uintptr(w.handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
case 'm':
attr := csbi.attributes
cs := buf.String()
if cs == "" {
procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(w.oldattr))
continue
}
token := strings.Split(cs, ";")
for i := 0; i < len(token); i += 1 {
ns := token[i]
if n, err = strconv.Atoi(ns); err == nil {
switch {
case n == 0 || n == 100:
attr = w.oldattr
case 1 <= n && n <= 5:
attr |= foregroundIntensity
case n == 7:
attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4)
case 22 == n || n == 25 || n == 25:
attr |= foregroundIntensity
case n == 27:
attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4)
case 30 <= n && n <= 37:
attr = (attr & backgroundMask)
if (n-30)&1 != 0 {
attr |= foregroundRed
}
if (n-30)&2 != 0 {
attr |= foregroundGreen
}
if (n-30)&4 != 0 {
attr |= foregroundBlue
}
case n == 38: // set foreground color.
if i < len(token)-2 && (token[i+1] == "5" || token[i+1] == "05") {
if n256, err := strconv.Atoi(token[i+2]); err == nil {
if n256foreAttr == nil {
n256setup()
}
attr &= backgroundMask
attr |= n256foreAttr[n256]
i += 2
}
} else {
attr = attr & (w.oldattr & backgroundMask)
}
case n == 39: // reset foreground color.
attr &= backgroundMask
attr |= w.oldattr & foregroundMask
case 40 <= n && n <= 47:
attr = (attr & foregroundMask)
if (n-40)&1 != 0 {
attr |= backgroundRed
}
if (n-40)&2 != 0 {
attr |= backgroundGreen
}
if (n-40)&4 != 0 {
attr |= backgroundBlue
}
case n == 48: // set background color.
if i < len(token)-2 && token[i+1] == "5" {
if n256, err := strconv.Atoi(token[i+2]); err == nil {
if n256backAttr == nil {
n256setup()
}
attr &= foregroundMask
attr |= n256backAttr[n256]
i += 2
}
} else {
attr = attr & (w.oldattr & foregroundMask)
}
case n == 49: // reset foreground color.
attr &= foregroundMask
attr |= w.oldattr & backgroundMask
case 90 <= n && n <= 97:
attr = (attr & backgroundMask)
attr |= foregroundIntensity
if (n-90)&1 != 0 {
attr |= foregroundRed
}
if (n-90)&2 != 0 {
attr |= foregroundGreen
}
if (n-90)&4 != 0 {
attr |= foregroundBlue
}
case 100 <= n && n <= 107:
attr = (attr & foregroundMask)
attr |= backgroundIntensity
if (n-100)&1 != 0 {
attr |= backgroundRed
}
if (n-100)&2 != 0 {
attr |= backgroundGreen
}
if (n-100)&4 != 0 {
attr |= backgroundBlue
}
}
procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(attr))
}
}
}
}
return len(data) - w.lastbuf.Len(), nil
}
type consoleColor struct {
rgb int
red bool
green bool
blue bool
intensity bool
}
func (c consoleColor) foregroundAttr() (attr word) {
if c.red {
attr |= foregroundRed
}
if c.green {
attr |= foregroundGreen
}
if c.blue {
attr |= foregroundBlue
}
if c.intensity {
attr |= foregroundIntensity
}
return
}
func (c consoleColor) backgroundAttr() (attr word) {
if c.red {
attr |= backgroundRed
}
if c.green {
attr |= backgroundGreen
}
if c.blue {
attr |= backgroundBlue
}
if c.intensity {
attr |= backgroundIntensity
}
return
}
var color16 = []consoleColor{
consoleColor{0x000000, false, false, false, false},
consoleColor{0x000080, false, false, true, false},
consoleColor{0x008000, false, true, false, false},
consoleColor{0x008080, false, true, true, false},
consoleColor{0x800000, true, false, false, false},
consoleColor{0x800080, true, false, true, false},
consoleColor{0x808000, true, true, false, false},
consoleColor{0xc0c0c0, true, true, true, false},
consoleColor{0x808080, false, false, false, true},
consoleColor{0x0000ff, false, false, true, true},
consoleColor{0x00ff00, false, true, false, true},
consoleColor{0x00ffff, false, true, true, true},
consoleColor{0xff0000, true, false, false, true},
consoleColor{0xff00ff, true, false, true, true},
consoleColor{0xffff00, true, true, false, true},
consoleColor{0xffffff, true, true, true, true},
}
type hsv struct {
h, s, v float32
}
func (a hsv) dist(b hsv) float32 {
dh := a.h - b.h
switch {
case dh > 0.5:
dh = 1 - dh
case dh < -0.5:
dh = -1 - dh
}
ds := a.s - b.s
dv := a.v - b.v
return float32(math.Sqrt(float64(dh*dh + ds*ds + dv*dv)))
}
func toHSV(rgb int) hsv {
r, g, b := float32((rgb&0xFF0000)>>16)/256.0,
float32((rgb&0x00FF00)>>8)/256.0,
float32(rgb&0x0000FF)/256.0
min, max := minmax3f(r, g, b)
h := max - min
if h > 0 {
if max == r {
h = (g - b) / h
if h < 0 {
h += 6
}
} else if max == g {
h = 2 + (b-r)/h
} else {
h = 4 + (r-g)/h
}
}
h /= 6.0
s := max - min
if max != 0 {
s /= max
}
v := max
return hsv{h: h, s: s, v: v}
}
type hsvTable []hsv
func toHSVTable(rgbTable []consoleColor) hsvTable {
t := make(hsvTable, len(rgbTable))
for i, c := range rgbTable {
t[i] = toHSV(c.rgb)
}
return t
}
func (t hsvTable) find(rgb int) consoleColor {
hsv := toHSV(rgb)
n := 7
l := float32(5.0)
for i, p := range t {
d := hsv.dist(p)
if d < l {
l, n = d, i
}
}
return color16[n]
}
func minmax3f(a, b, c float32) (min, max float32) {
if a < b {
if b < c {
return a, c
} else if a < c {
return a, b
} else {
return c, b
}
} else {
if a < c {
return b, c
} else if b < c {
return b, a
} else {
return c, a
}
}
}
var n256foreAttr []word
var n256backAttr []word
func n256setup() {
n256foreAttr = make([]word, 256)
n256backAttr = make([]word, 256)
t := toHSVTable(color16)
for i, rgb := range color256 {
c := t.find(rgb)
n256foreAttr[i] = c.foregroundAttr()
n256backAttr[i] = c.backgroundAttr()
}
}

9
vendor/github.com/mattn/go-isatty/LICENSE generated vendored Normal file
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Copyright (c) Yasuhiro MATSUMOTO <mattn.jp@gmail.com>
MIT License (Expat)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

37
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# go-isatty
isatty for golang
## Usage
```go
package main
import (
"fmt"
"github.com/mattn/go-isatty"
"os"
)
func main() {
if isatty.IsTerminal(os.Stdout.Fd()) {
fmt.Println("Is Terminal")
} else {
fmt.Println("Is Not Terminal")
}
}
```
## Installation
```
$ go get github.com/mattn/go-isatty
```
# License
MIT
# Author
Yasuhiro Matsumoto (a.k.a mattn)

2
vendor/github.com/mattn/go-isatty/doc.go generated vendored Normal file
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// Package isatty implements interface to isatty
package isatty

9
vendor/github.com/mattn/go-isatty/isatty_appengine.go generated vendored Normal file
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// +build appengine
package isatty
// IsTerminal returns true if the file descriptor is terminal which
// is always false on on appengine classic which is a sandboxed PaaS.
func IsTerminal(fd uintptr) bool {
return false
}

18
vendor/github.com/mattn/go-isatty/isatty_bsd.go generated vendored Normal file
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// +build darwin freebsd openbsd netbsd
// +build !appengine
package isatty
import (
"syscall"
"unsafe"
)
const ioctlReadTermios = syscall.TIOCGETA
// IsTerminal return true if the file descriptor is terminal.
func IsTerminal(fd uintptr) bool {
var termios syscall.Termios
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
return err == 0
}

18
vendor/github.com/mattn/go-isatty/isatty_linux.go generated vendored Normal file
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// +build linux
// +build !appengine
package isatty
import (
"syscall"
"unsafe"
)
const ioctlReadTermios = syscall.TCGETS
// IsTerminal return true if the file descriptor is terminal.
func IsTerminal(fd uintptr) bool {
var termios syscall.Termios
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
return err == 0
}

16
vendor/github.com/mattn/go-isatty/isatty_solaris.go generated vendored Normal file
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// +build solaris
// +build !appengine
package isatty
import (
"golang.org/x/sys/unix"
)
// IsTerminal returns true if the given file descriptor is a terminal.
// see: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libbc/libc/gen/common/isatty.c
func IsTerminal(fd uintptr) bool {
var termio unix.Termio
err := unix.IoctlSetTermio(int(fd), unix.TCGETA, &termio)
return err == nil
}

19
vendor/github.com/mattn/go-isatty/isatty_windows.go generated vendored Normal file
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// +build windows
// +build !appengine
package isatty
import (
"syscall"
"unsafe"
)
var kernel32 = syscall.NewLazyDLL("kernel32.dll")
var procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
// IsTerminal return true if the file descriptor is terminal.
func IsTerminal(fd uintptr) bool {
var st uint32
r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, fd, uintptr(unsafe.Pointer(&st)), 0)
return r != 0 && e == 0
}

21
vendor/github.com/peterh/liner/COPYING generated vendored Normal file
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Copyright © 2012 Peter Harris
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice (including the next
paragraph) shall be included in all copies or substantial portions of the
Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

100
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Liner
=====
Liner is a command line editor with history. It was inspired by linenoise;
everything Unix-like is a VT100 (or is trying very hard to be). If your
terminal is not pretending to be a VT100, change it. Liner also support
Windows.
Liner is released under the X11 license (which is similar to the new BSD
license).
Line Editing
------------
The following line editing commands are supported on platforms and terminals
that Liner supports:
Keystroke | Action
--------- | ------
Ctrl-A, Home | Move cursor to beginning of line
Ctrl-E, End | Move cursor to end of line
Ctrl-B, Left | Move cursor one character left
Ctrl-F, Right| Move cursor one character right
Ctrl-Left, Alt-B | Move cursor to previous word
Ctrl-Right, Alt-F | Move cursor to next word
Ctrl-D, Del | (if line is *not* empty) Delete character under cursor
Ctrl-D | (if line *is* empty) End of File - usually quits application
Ctrl-C | Reset input (create new empty prompt)
Ctrl-L | Clear screen (line is unmodified)
Ctrl-T | Transpose previous character with current character
Ctrl-H, BackSpace | Delete character before cursor
Ctrl-W | Delete word leading up to cursor
Ctrl-K | Delete from cursor to end of line
Ctrl-U | Delete from start of line to cursor
Ctrl-P, Up | Previous match from history
Ctrl-N, Down | Next match from history
Ctrl-R | Reverse Search history (Ctrl-S forward, Ctrl-G cancel)
Ctrl-Y | Paste from Yank buffer (Alt-Y to paste next yank instead)
Tab | Next completion
Shift-Tab | (after Tab) Previous completion
Getting started
-----------------
```go
package main
import (
"log"
"os"
"path/filepath"
"strings"
"github.com/peterh/liner"
)
var (
history_fn = filepath.Join(os.TempDir(), ".liner_example_history")
names = []string{"john", "james", "mary", "nancy"}
)
func main() {
line := liner.NewLiner()
defer line.Close()
line.SetCtrlCAborts(true)
line.SetCompleter(func(line string) (c []string) {
for _, n := range names {
if strings.HasPrefix(n, strings.ToLower(line)) {
c = append(c, n)
}
}
return
})
if f, err := os.Open(history_fn); err == nil {
line.ReadHistory(f)
f.Close()
}
if name, err := line.Prompt("What is your name? "); err == nil {
log.Print("Got: ", name)
line.AppendHistory(name)
} else if err == liner.ErrPromptAborted {
log.Print("Aborted")
} else {
log.Print("Error reading line: ", err)
}
if f, err := os.Create(history_fn); err != nil {
log.Print("Error writing history file: ", err)
} else {
line.WriteHistory(f)
f.Close()
}
}
```
For documentation, see http://godoc.org/github.com/peterh/liner

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vendor/github.com/peterh/liner/bsdinput.go generated vendored Normal file
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// +build openbsd freebsd netbsd
package liner
import "syscall"
const (
getTermios = syscall.TIOCGETA
setTermios = syscall.TIOCSETA
)
const (
// Input flags
inpck = 0x010
istrip = 0x020
icrnl = 0x100
ixon = 0x200
// Output flags
opost = 0x1
// Control flags
cs8 = 0x300
// Local flags
isig = 0x080
icanon = 0x100
iexten = 0x400
)
type termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]byte
Ispeed int32
Ospeed int32
}
const cursorColumn = false

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/*
Package liner implements a simple command line editor, inspired by linenoise
(https://github.com/antirez/linenoise/). This package supports WIN32 in
addition to the xterm codes supported by everything else.
*/
package liner
import (
"bufio"
"container/ring"
"errors"
"fmt"
"io"
"strings"
"sync"
"unicode/utf8"
)
type commonState struct {
terminalSupported bool
outputRedirected bool
inputRedirected bool
history []string
historyMutex sync.RWMutex
completer WordCompleter
columns int
killRing *ring.Ring
ctrlCAborts bool
r *bufio.Reader
tabStyle TabStyle
multiLineMode bool
cursorRows int
maxRows int
shouldRestart ShouldRestart
}
// TabStyle is used to select how tab completions are displayed.
type TabStyle int
// Two tab styles are currently available:
//
// TabCircular cycles through each completion item and displays it directly on
// the prompt
//
// TabPrints prints the list of completion items to the screen after a second
// tab key is pressed. This behaves similar to GNU readline and BASH (which
// uses readline)
const (
TabCircular TabStyle = iota
TabPrints
)
// ErrPromptAborted is returned from Prompt or PasswordPrompt when the user presses Ctrl-C
// if SetCtrlCAborts(true) has been called on the State
var ErrPromptAborted = errors.New("prompt aborted")
// ErrNotTerminalOutput is returned from Prompt or PasswordPrompt if the
// platform is normally supported, but stdout has been redirected
var ErrNotTerminalOutput = errors.New("standard output is not a terminal")
// Max elements to save on the killring
const KillRingMax = 60
// HistoryLimit is the maximum number of entries saved in the scrollback history.
const HistoryLimit = 1000
// ReadHistory reads scrollback history from r. Returns the number of lines
// read, and any read error (except io.EOF).
func (s *State) ReadHistory(r io.Reader) (num int, err error) {
s.historyMutex.Lock()
defer s.historyMutex.Unlock()
in := bufio.NewReader(r)
num = 0
for {
line, part, err := in.ReadLine()
if err == io.EOF {
break
}
if err != nil {
return num, err
}
if part {
return num, fmt.Errorf("line %d is too long", num+1)
}
if !utf8.Valid(line) {
return num, fmt.Errorf("invalid string at line %d", num+1)
}
num++
s.history = append(s.history, string(line))
if len(s.history) > HistoryLimit {
s.history = s.history[1:]
}
}
return num, nil
}
// WriteHistory writes scrollback history to w. Returns the number of lines
// successfully written, and any write error.
//
// Unlike the rest of liner's API, WriteHistory is safe to call
// from another goroutine while Prompt is in progress.
// This exception is to facilitate the saving of the history buffer
// during an unexpected exit (for example, due to Ctrl-C being invoked)
func (s *State) WriteHistory(w io.Writer) (num int, err error) {
s.historyMutex.RLock()
defer s.historyMutex.RUnlock()
for _, item := range s.history {
_, err := fmt.Fprintln(w, item)
if err != nil {
return num, err
}
num++
}
return num, nil
}
// AppendHistory appends an entry to the scrollback history. AppendHistory
// should be called iff Prompt returns a valid command.
func (s *State) AppendHistory(item string) {
s.historyMutex.Lock()
defer s.historyMutex.Unlock()
if len(s.history) > 0 {
if item == s.history[len(s.history)-1] {
return
}
}
s.history = append(s.history, item)
if len(s.history) > HistoryLimit {
s.history = s.history[1:]
}
}
// Returns the history lines starting with prefix
func (s *State) getHistoryByPrefix(prefix string) (ph []string) {
for _, h := range s.history {
if strings.HasPrefix(h, prefix) {
ph = append(ph, h)
}
}
return
}
// Returns the history lines matching the inteligent search
func (s *State) getHistoryByPattern(pattern string) (ph []string, pos []int) {
if pattern == "" {
return
}
for _, h := range s.history {
if i := strings.Index(h, pattern); i >= 0 {
ph = append(ph, h)
pos = append(pos, i)
}
}
return
}
// Completer takes the currently edited line content at the left of the cursor
// and returns a list of completion candidates.
// If the line is "Hello, wo!!!" and the cursor is before the first '!', "Hello, wo" is passed
// to the completer which may return {"Hello, world", "Hello, Word"} to have "Hello, world!!!".
type Completer func(line string) []string
// WordCompleter takes the currently edited line with the cursor position and
// returns the completion candidates for the partial word to be completed.
// If the line is "Hello, wo!!!" and the cursor is before the first '!', ("Hello, wo!!!", 9) is passed
// to the completer which may returns ("Hello, ", {"world", "Word"}, "!!!") to have "Hello, world!!!".
type WordCompleter func(line string, pos int) (head string, completions []string, tail string)
// SetCompleter sets the completion function that Liner will call to
// fetch completion candidates when the user presses tab.
func (s *State) SetCompleter(f Completer) {
if f == nil {
s.completer = nil
return
}
s.completer = func(line string, pos int) (string, []string, string) {
return "", f(string([]rune(line)[:pos])), string([]rune(line)[pos:])
}
}
// SetWordCompleter sets the completion function that Liner will call to
// fetch completion candidates when the user presses tab.
func (s *State) SetWordCompleter(f WordCompleter) {
s.completer = f
}
// SetTabCompletionStyle sets the behvavior when the Tab key is pressed
// for auto-completion. TabCircular is the default behavior and cycles
// through the list of candidates at the prompt. TabPrints will print
// the available completion candidates to the screen similar to BASH
// and GNU Readline
func (s *State) SetTabCompletionStyle(tabStyle TabStyle) {
s.tabStyle = tabStyle
}
// ModeApplier is the interface that wraps a representation of the terminal
// mode. ApplyMode sets the terminal to this mode.
type ModeApplier interface {
ApplyMode() error
}
// SetCtrlCAborts sets whether Prompt on a supported terminal will return an
// ErrPromptAborted when Ctrl-C is pressed. The default is false (will not
// return when Ctrl-C is pressed). Unsupported terminals typically raise SIGINT
// (and Prompt does not return) regardless of the value passed to SetCtrlCAborts.
func (s *State) SetCtrlCAborts(aborts bool) {
s.ctrlCAborts = aborts
}
// SetMultiLineMode sets whether line is auto-wrapped. The default is false (single line).
func (s *State) SetMultiLineMode(mlmode bool) {
s.multiLineMode = mlmode
}
// ShouldRestart is passed the error generated by readNext and returns true if
// the the read should be restarted or false if the error should be returned.
type ShouldRestart func(err error) bool
// SetShouldRestart sets the restart function that Liner will call to determine
// whether to retry the call to, or return the error returned by, readNext.
func (s *State) SetShouldRestart(f ShouldRestart) {
s.shouldRestart = f
}
func (s *State) promptUnsupported(p string) (string, error) {
if !s.inputRedirected || !s.terminalSupported {
fmt.Print(p)
}
linebuf, _, err := s.r.ReadLine()
if err != nil {
return "", err
}
return string(linebuf), nil
}

57
vendor/github.com/peterh/liner/fallbackinput.go generated vendored Normal file
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@ -0,0 +1,57 @@
// +build !windows,!linux,!darwin,!openbsd,!freebsd,!netbsd
package liner
import (
"bufio"
"errors"
"os"
)
// State represents an open terminal
type State struct {
commonState
}
// Prompt displays p, and then waits for user input. Prompt does not support
// line editing on this operating system.
func (s *State) Prompt(p string) (string, error) {
return s.promptUnsupported(p)
}
// PasswordPrompt is not supported in this OS.
func (s *State) PasswordPrompt(p string) (string, error) {
return "", errors.New("liner: function not supported in this terminal")
}
// NewLiner initializes a new *State
//
// Note that this operating system uses a fallback mode without line
// editing. Patches welcome.
func NewLiner() *State {
var s State
s.r = bufio.NewReader(os.Stdin)
return &s
}
// Close returns the terminal to its previous mode
func (s *State) Close() error {
return nil
}
// TerminalSupported returns false because line editing is not
// supported on this platform.
func TerminalSupported() bool {
return false
}
type noopMode struct{}
func (n noopMode) ApplyMode() error {
return nil
}
// TerminalMode returns a noop InputModeSetter on this platform.
func TerminalMode() (ModeApplier, error) {
return noopMode{}, nil
}

367
vendor/github.com/peterh/liner/input.go generated vendored Normal file
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@ -0,0 +1,367 @@
// +build linux darwin openbsd freebsd netbsd
package liner
import (
"bufio"
"errors"
"os"
"os/signal"
"strconv"
"strings"
"syscall"
"time"
)
type nexter struct {
r rune
err error
}
// State represents an open terminal
type State struct {
commonState
origMode termios
defaultMode termios
next <-chan nexter
winch chan os.Signal
pending []rune
useCHA bool
}
// NewLiner initializes a new *State, and sets the terminal into raw mode. To
// restore the terminal to its previous state, call State.Close().
//
// Note if you are still using Go 1.0: NewLiner handles SIGWINCH, so it will
// leak a channel every time you call it. Therefore, it is recommened that you
// upgrade to a newer release of Go, or ensure that NewLiner is only called
// once.
func NewLiner() *State {
var s State
s.r = bufio.NewReader(os.Stdin)
s.terminalSupported = TerminalSupported()
if m, err := TerminalMode(); err == nil {
s.origMode = *m.(*termios)
} else {
s.inputRedirected = true
}
if _, err := getMode(syscall.Stdout); err != 0 {
s.outputRedirected = true
}
if s.inputRedirected && s.outputRedirected {
s.terminalSupported = false
}
if s.terminalSupported && !s.inputRedirected && !s.outputRedirected {
mode := s.origMode
mode.Iflag &^= icrnl | inpck | istrip | ixon
mode.Cflag |= cs8
mode.Lflag &^= syscall.ECHO | icanon | iexten
mode.ApplyMode()
winch := make(chan os.Signal, 1)
signal.Notify(winch, syscall.SIGWINCH)
s.winch = winch
s.checkOutput()
}
if !s.outputRedirected {
s.outputRedirected = !s.getColumns()
}
return &s
}
var errTimedOut = errors.New("timeout")
func (s *State) startPrompt() {
if s.terminalSupported {
if m, err := TerminalMode(); err == nil {
s.defaultMode = *m.(*termios)
mode := s.defaultMode
mode.Lflag &^= isig
mode.ApplyMode()
}
}
s.restartPrompt()
}
func (s *State) restartPrompt() {
next := make(chan nexter)
go func() {
for {
var n nexter
n.r, _, n.err = s.r.ReadRune()
next <- n
// Shut down nexter loop when an end condition has been reached
if n.err != nil || n.r == '\n' || n.r == '\r' || n.r == ctrlC || n.r == ctrlD {
close(next)
return
}
}
}()
s.next = next
}
func (s *State) stopPrompt() {
if s.terminalSupported {
s.defaultMode.ApplyMode()
}
}
func (s *State) nextPending(timeout <-chan time.Time) (rune, error) {
select {
case thing, ok := <-s.next:
if !ok {
return 0, errors.New("liner: internal error")
}
if thing.err != nil {
return 0, thing.err
}
s.pending = append(s.pending, thing.r)
return thing.r, nil
case <-timeout:
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, errTimedOut
}
// not reached
return 0, nil
}
func (s *State) readNext() (interface{}, error) {
if len(s.pending) > 0 {
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
var r rune
select {
case thing, ok := <-s.next:
if !ok {
return 0, errors.New("liner: internal error")
}
if thing.err != nil {
return nil, thing.err
}
r = thing.r
case <-s.winch:
s.getColumns()
return winch, nil
}
if r != esc {
return r, nil
}
s.pending = append(s.pending, r)
// Wait at most 50 ms for the rest of the escape sequence
// If nothing else arrives, it was an actual press of the esc key
timeout := time.After(50 * time.Millisecond)
flag, err := s.nextPending(timeout)
if err != nil {
if err == errTimedOut {
return flag, nil
}
return unknown, err
}
switch flag {
case '[':
code, err := s.nextPending(timeout)
if err != nil {
if err == errTimedOut {
return code, nil
}
return unknown, err
}
switch code {
case 'A':
s.pending = s.pending[:0] // escape code complete
return up, nil
case 'B':
s.pending = s.pending[:0] // escape code complete
return down, nil
case 'C':
s.pending = s.pending[:0] // escape code complete
return right, nil
case 'D':
s.pending = s.pending[:0] // escape code complete
return left, nil
case 'F':
s.pending = s.pending[:0] // escape code complete
return end, nil
case 'H':
s.pending = s.pending[:0] // escape code complete
return home, nil
case 'Z':
s.pending = s.pending[:0] // escape code complete
return shiftTab, nil
case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
num := []rune{code}
for {
code, err := s.nextPending(timeout)
if err != nil {
if err == errTimedOut {
return code, nil
}
return nil, err
}
switch code {
case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
num = append(num, code)
case ';':
// Modifier code to follow
// This only supports Ctrl-left and Ctrl-right for now
x, _ := strconv.ParseInt(string(num), 10, 32)
if x != 1 {
// Can't be left or right
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
num = num[:0]
for {
code, err = s.nextPending(timeout)
if err != nil {
if err == errTimedOut {
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
return nil, err
}
switch code {
case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
num = append(num, code)
case 'C', 'D':
// right, left
mod, _ := strconv.ParseInt(string(num), 10, 32)
if mod != 5 {
// Not bare Ctrl
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
s.pending = s.pending[:0] // escape code complete
if code == 'C' {
return wordRight, nil
}
return wordLeft, nil
default:
// Not left or right
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
}
case '~':
s.pending = s.pending[:0] // escape code complete
x, _ := strconv.ParseInt(string(num), 10, 32)
switch x {
case 2:
return insert, nil
case 3:
return del, nil
case 5:
return pageUp, nil
case 6:
return pageDown, nil
case 7:
return home, nil
case 8:
return end, nil
case 15:
return f5, nil
case 17:
return f6, nil
case 18:
return f7, nil
case 19:
return f8, nil
case 20:
return f9, nil
case 21:
return f10, nil
case 23:
return f11, nil
case 24:
return f12, nil
default:
return unknown, nil
}
default:
// unrecognized escape code
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
}
}
case 'O':
code, err := s.nextPending(timeout)
if err != nil {
if err == errTimedOut {
return code, nil
}
return nil, err
}
s.pending = s.pending[:0] // escape code complete
switch code {
case 'c':
return wordRight, nil
case 'd':
return wordLeft, nil
case 'H':
return home, nil
case 'F':
return end, nil
case 'P':
return f1, nil
case 'Q':
return f2, nil
case 'R':
return f3, nil
case 'S':
return f4, nil
default:
return unknown, nil
}
case 'b':
s.pending = s.pending[:0] // escape code complete
return altB, nil
case 'f':
s.pending = s.pending[:0] // escape code complete
return altF, nil
case 'y':
s.pending = s.pending[:0] // escape code complete
return altY, nil
default:
rv := s.pending[0]
s.pending = s.pending[1:]
return rv, nil
}
// not reached
return r, nil
}
// Close returns the terminal to its previous mode
func (s *State) Close() error {
stopSignal(s.winch)
if !s.inputRedirected {
s.origMode.ApplyMode()
}
return nil
}
// TerminalSupported returns true if the current terminal supports
// line editing features, and false if liner will use the 'dumb'
// fallback for input.
// Note that TerminalSupported does not check all factors that may
// cause liner to not fully support the terminal (such as stdin redirection)
func TerminalSupported() bool {
bad := map[string]bool{"": true, "dumb": true, "cons25": true}
return !bad[strings.ToLower(os.Getenv("TERM"))]
}

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