mirror of
https://github.com/beego/bee.git
synced 2024-11-19 05:10:53 +00:00
348 lines
7.7 KiB
Go
348 lines
7.7 KiB
Go
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
|
|
}
|
|
|
|
// 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.rax >> 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")
|
|
}
|