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Updated vendor
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107
vendor/github.com/go-delve/delve/pkg/dwarf/godwarf/sections.go
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vendored
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107
vendor/github.com/go-delve/delve/pkg/dwarf/godwarf/sections.go
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@ -0,0 +1,107 @@
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package godwarf
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import (
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"bytes"
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"compress/zlib"
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"debug/elf"
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"debug/macho"
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"debug/pe"
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"encoding/binary"
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"fmt"
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"io"
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)
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// GetDebugSectionElf returns the data contents of the specified debug
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// section, decompressing it if it is compressed.
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// For example GetDebugSectionElf("line") will return the contents of
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// .debug_line, if .debug_line doesn't exist it will try to return the
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// decompressed contents of .zdebug_line.
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func GetDebugSectionElf(f *elf.File, name string) ([]byte, error) {
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sec := f.Section(".debug_" + name)
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if sec != nil {
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return sec.Data()
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}
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sec = f.Section(".zdebug_" + name)
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if sec == nil {
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return nil, fmt.Errorf("could not find .debug_%s section", name)
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}
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b, err := sec.Data()
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if err != nil {
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return nil, err
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}
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return decompressMaybe(b)
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}
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// GetDebugSectionPE returns the data contents of the specified debug
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// section, decompressing it if it is compressed.
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// For example GetDebugSectionPE("line") will return the contents of
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// .debug_line, if .debug_line doesn't exist it will try to return the
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// decompressed contents of .zdebug_line.
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func GetDebugSectionPE(f *pe.File, name string) ([]byte, error) {
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sec := f.Section(".debug_" + name)
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if sec != nil {
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return peSectionData(sec)
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}
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sec = f.Section(".zdebug_" + name)
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if sec == nil {
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return nil, fmt.Errorf("could not find .debug_%s section", name)
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}
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b, err := peSectionData(sec)
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if err != nil {
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return nil, err
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}
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return decompressMaybe(b)
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}
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func peSectionData(sec *pe.Section) ([]byte, error) {
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b, err := sec.Data()
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if err != nil {
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return nil, err
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}
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if 0 < sec.VirtualSize && sec.VirtualSize < sec.Size {
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b = b[:sec.VirtualSize]
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}
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return b, nil
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}
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// GetDebugSectionMacho returns the data contents of the specified debug
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// section, decompressing it if it is compressed.
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// For example GetDebugSectionMacho("line") will return the contents of
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// __debug_line, if __debug_line doesn't exist it will try to return the
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// decompressed contents of __zdebug_line.
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func GetDebugSectionMacho(f *macho.File, name string) ([]byte, error) {
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sec := f.Section("__debug_" + name)
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if sec != nil {
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return sec.Data()
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}
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sec = f.Section("__zdebug_" + name)
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if sec == nil {
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return nil, fmt.Errorf("could not find .debug_%s section", name)
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}
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b, err := sec.Data()
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if err != nil {
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return nil, err
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}
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return decompressMaybe(b)
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}
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func decompressMaybe(b []byte) ([]byte, error) {
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if len(b) < 12 || string(b[:4]) != "ZLIB" {
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// not compressed
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return b, nil
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}
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dlen := binary.BigEndian.Uint64(b[4:12])
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dbuf := make([]byte, dlen)
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r, err := zlib.NewReader(bytes.NewBuffer(b[12:]))
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if err != nil {
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return nil, err
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}
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if _, err := io.ReadFull(r, dbuf); err != nil {
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return nil, err
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}
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if err := r.Close(); err != nil {
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return nil, err
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}
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return dbuf, nil
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}
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1011
vendor/github.com/go-delve/delve/pkg/dwarf/godwarf/type.go
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1011
vendor/github.com/go-delve/delve/pkg/dwarf/godwarf/type.go
generated
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