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path: root/vendor/github.com/twitchyliquid64/golang-asm/goobj/objfile.go
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Diffstat (limited to 'vendor/github.com/twitchyliquid64/golang-asm/goobj/objfile.go')
-rw-r--r--vendor/github.com/twitchyliquid64/golang-asm/goobj/objfile.go871
1 files changed, 0 insertions, 871 deletions
diff --git a/vendor/github.com/twitchyliquid64/golang-asm/goobj/objfile.go b/vendor/github.com/twitchyliquid64/golang-asm/goobj/objfile.go
deleted file mode 100644
index 3303549aa..000000000
--- a/vendor/github.com/twitchyliquid64/golang-asm/goobj/objfile.go
+++ /dev/null
@@ -1,871 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This package defines the Go object file format, and provide "low-level" functions
-// for reading and writing object files.
-
-// The object file is understood by the compiler, assembler, linker, and tools. They
-// have "high level" code that operates on object files, handling application-specific
-// logics, and use this package for the actual reading and writing. Specifically, the
-// code below:
-//
-// - cmd/internal/obj/objfile.go (used by cmd/asm and cmd/compile)
-// - cmd/internal/objfile/goobj.go (used cmd/nm, cmd/objdump)
-// - cmd/link/internal/loader package (used by cmd/link)
-//
-// If the object file format changes, they may (or may not) need to change.
-
-package goobj
-
-import (
- "bytes"
- "github.com/twitchyliquid64/golang-asm/bio"
- "crypto/sha1"
- "encoding/binary"
- "errors"
- "fmt"
- "github.com/twitchyliquid64/golang-asm/unsafeheader"
- "io"
- "unsafe"
-)
-
-// New object file format.
-//
-// Header struct {
-// Magic [...]byte // "\x00go116ld"
-// Fingerprint [8]byte
-// Flags uint32
-// Offsets [...]uint32 // byte offset of each block below
-// }
-//
-// Strings [...]struct {
-// Data [...]byte
-// }
-//
-// Autolib [...]struct { // imported packages (for file loading)
-// Pkg string
-// Fingerprint [8]byte
-// }
-//
-// PkgIndex [...]string // referenced packages by index
-//
-// Files [...]string
-//
-// SymbolDefs [...]struct {
-// Name string
-// ABI uint16
-// Type uint8
-// Flag uint8
-// Flag2 uint8
-// Size uint32
-// }
-// Hashed64Defs [...]struct { // short hashed (content-addressable) symbol definitions
-// ... // same as SymbolDefs
-// }
-// HashedDefs [...]struct { // hashed (content-addressable) symbol definitions
-// ... // same as SymbolDefs
-// }
-// NonPkgDefs [...]struct { // non-pkg symbol definitions
-// ... // same as SymbolDefs
-// }
-// NonPkgRefs [...]struct { // non-pkg symbol references
-// ... // same as SymbolDefs
-// }
-//
-// RefFlags [...]struct { // referenced symbol flags
-// Sym symRef
-// Flag uint8
-// Flag2 uint8
-// }
-//
-// Hash64 [...][8]byte
-// Hash [...][N]byte
-//
-// RelocIndex [...]uint32 // index to Relocs
-// AuxIndex [...]uint32 // index to Aux
-// DataIndex [...]uint32 // offset to Data
-//
-// Relocs [...]struct {
-// Off int32
-// Size uint8
-// Type uint8
-// Add int64
-// Sym symRef
-// }
-//
-// Aux [...]struct {
-// Type uint8
-// Sym symRef
-// }
-//
-// Data [...]byte
-// Pcdata [...]byte
-//
-// // blocks only used by tools (objdump, nm)
-//
-// RefNames [...]struct { // referenced symbol names
-// Sym symRef
-// Name string
-// // TODO: include ABI version as well?
-// }
-//
-// string is encoded as is a uint32 length followed by a uint32 offset
-// that points to the corresponding string bytes.
-//
-// symRef is struct { PkgIdx, SymIdx uint32 }.
-//
-// Slice type (e.g. []symRef) is encoded as a length prefix (uint32)
-// followed by that number of elements.
-//
-// The types below correspond to the encoded data structure in the
-// object file.
-
-// Symbol indexing.
-//
-// Each symbol is referenced with a pair of indices, { PkgIdx, SymIdx },
-// as the symRef struct above.
-//
-// PkgIdx is either a predeclared index (see PkgIdxNone below) or
-// an index of an imported package. For the latter case, PkgIdx is the
-// index of the package in the PkgIndex array. 0 is an invalid index.
-//
-// SymIdx is the index of the symbol in the given package.
-// - If PkgIdx is PkgIdxSelf, SymIdx is the index of the symbol in the
-// SymbolDefs array.
-// - If PkgIdx is PkgIdxHashed64, SymIdx is the index of the symbol in the
-// Hashed64Defs array.
-// - If PkgIdx is PkgIdxHashed, SymIdx is the index of the symbol in the
-// HashedDefs array.
-// - If PkgIdx is PkgIdxNone, SymIdx is the index of the symbol in the
-// NonPkgDefs array (could natually overflow to NonPkgRefs array).
-// - Otherwise, SymIdx is the index of the symbol in some other package's
-// SymbolDefs array.
-//
-// {0, 0} represents a nil symbol. Otherwise PkgIdx should not be 0.
-//
-// Hash contains the content hashes of content-addressable symbols, of
-// which PkgIdx is PkgIdxHashed, in the same order of HashedDefs array.
-// Hash64 is similar, for PkgIdxHashed64 symbols.
-//
-// RelocIndex, AuxIndex, and DataIndex contains indices/offsets to
-// Relocs/Aux/Data blocks, one element per symbol, first for all the
-// defined symbols, then all the defined hashed and non-package symbols,
-// in the same order of SymbolDefs/Hashed64Defs/HashedDefs/NonPkgDefs
-// arrays. For N total defined symbols, the array is of length N+1. The
-// last element is the total number of relocations (aux symbols, data
-// blocks, etc.).
-//
-// They can be accessed by index. For the i-th symbol, its relocations
-// are the RelocIndex[i]-th (inclusive) to RelocIndex[i+1]-th (exclusive)
-// elements in the Relocs array. Aux/Data are likewise. (The index is
-// 0-based.)
-
-// Auxiliary symbols.
-//
-// Each symbol may (or may not) be associated with a number of auxiliary
-// symbols. They are described in the Aux block. See Aux struct below.
-// Currently a symbol's Gotype, FuncInfo, and associated DWARF symbols
-// are auxiliary symbols.
-
-const stringRefSize = 8 // two uint32s
-
-type FingerprintType [8]byte
-
-func (fp FingerprintType) IsZero() bool { return fp == FingerprintType{} }
-
-// Package Index.
-const (
- PkgIdxNone = (1<<31 - 1) - iota // Non-package symbols
- PkgIdxHashed64 // Short hashed (content-addressable) symbols
- PkgIdxHashed // Hashed (content-addressable) symbols
- PkgIdxBuiltin // Predefined runtime symbols (ex: runtime.newobject)
- PkgIdxSelf // Symbols defined in the current package
- PkgIdxInvalid = 0
- // The index of other referenced packages starts from 1.
-)
-
-// Blocks
-const (
- BlkAutolib = iota
- BlkPkgIdx
- BlkFile
- BlkSymdef
- BlkHashed64def
- BlkHasheddef
- BlkNonpkgdef
- BlkNonpkgref
- BlkRefFlags
- BlkHash64
- BlkHash
- BlkRelocIdx
- BlkAuxIdx
- BlkDataIdx
- BlkReloc
- BlkAux
- BlkData
- BlkPcdata
- BlkRefName
- BlkEnd
- NBlk
-)
-
-// File header.
-// TODO: probably no need to export this.
-type Header struct {
- Magic string
- Fingerprint FingerprintType
- Flags uint32
- Offsets [NBlk]uint32
-}
-
-const Magic = "\x00go116ld"
-
-func (h *Header) Write(w *Writer) {
- w.RawString(h.Magic)
- w.Bytes(h.Fingerprint[:])
- w.Uint32(h.Flags)
- for _, x := range h.Offsets {
- w.Uint32(x)
- }
-}
-
-func (h *Header) Read(r *Reader) error {
- b := r.BytesAt(0, len(Magic))
- h.Magic = string(b)
- if h.Magic != Magic {
- return errors.New("wrong magic, not a Go object file")
- }
- off := uint32(len(h.Magic))
- copy(h.Fingerprint[:], r.BytesAt(off, len(h.Fingerprint)))
- off += 8
- h.Flags = r.uint32At(off)
- off += 4
- for i := range h.Offsets {
- h.Offsets[i] = r.uint32At(off)
- off += 4
- }
- return nil
-}
-
-func (h *Header) Size() int {
- return len(h.Magic) + 4 + 4*len(h.Offsets)
-}
-
-// Autolib
-type ImportedPkg struct {
- Pkg string
- Fingerprint FingerprintType
-}
-
-const importedPkgSize = stringRefSize + 8
-
-func (p *ImportedPkg) Write(w *Writer) {
- w.StringRef(p.Pkg)
- w.Bytes(p.Fingerprint[:])
-}
-
-// Symbol definition.
-//
-// Serialized format:
-// Sym struct {
-// Name string
-// ABI uint16
-// Type uint8
-// Flag uint8
-// Flag2 uint8
-// Siz uint32
-// Align uint32
-// }
-type Sym [SymSize]byte
-
-const SymSize = stringRefSize + 2 + 1 + 1 + 1 + 4 + 4
-
-const SymABIstatic = ^uint16(0)
-
-const (
- ObjFlagShared = 1 << iota // this object is built with -shared
- ObjFlagNeedNameExpansion // the linker needs to expand `"".` to package path in symbol names
- ObjFlagFromAssembly // object is from asm src, not go
-)
-
-// Sym.Flag
-const (
- SymFlagDupok = 1 << iota
- SymFlagLocal
- SymFlagTypelink
- SymFlagLeaf
- SymFlagNoSplit
- SymFlagReflectMethod
- SymFlagGoType
- SymFlagTopFrame
-)
-
-// Sym.Flag2
-const (
- SymFlagUsedInIface = 1 << iota
- SymFlagItab
-)
-
-// Returns the length of the name of the symbol.
-func (s *Sym) NameLen(r *Reader) int {
- return int(binary.LittleEndian.Uint32(s[:]))
-}
-
-func (s *Sym) Name(r *Reader) string {
- len := binary.LittleEndian.Uint32(s[:])
- off := binary.LittleEndian.Uint32(s[4:])
- return r.StringAt(off, len)
-}
-
-func (s *Sym) ABI() uint16 { return binary.LittleEndian.Uint16(s[8:]) }
-func (s *Sym) Type() uint8 { return s[10] }
-func (s *Sym) Flag() uint8 { return s[11] }
-func (s *Sym) Flag2() uint8 { return s[12] }
-func (s *Sym) Siz() uint32 { return binary.LittleEndian.Uint32(s[13:]) }
-func (s *Sym) Align() uint32 { return binary.LittleEndian.Uint32(s[17:]) }
-
-func (s *Sym) Dupok() bool { return s.Flag()&SymFlagDupok != 0 }
-func (s *Sym) Local() bool { return s.Flag()&SymFlagLocal != 0 }
-func (s *Sym) Typelink() bool { return s.Flag()&SymFlagTypelink != 0 }
-func (s *Sym) Leaf() bool { return s.Flag()&SymFlagLeaf != 0 }
-func (s *Sym) NoSplit() bool { return s.Flag()&SymFlagNoSplit != 0 }
-func (s *Sym) ReflectMethod() bool { return s.Flag()&SymFlagReflectMethod != 0 }
-func (s *Sym) IsGoType() bool { return s.Flag()&SymFlagGoType != 0 }
-func (s *Sym) TopFrame() bool { return s.Flag()&SymFlagTopFrame != 0 }
-func (s *Sym) UsedInIface() bool { return s.Flag2()&SymFlagUsedInIface != 0 }
-func (s *Sym) IsItab() bool { return s.Flag2()&SymFlagItab != 0 }
-
-func (s *Sym) SetName(x string, w *Writer) {
- binary.LittleEndian.PutUint32(s[:], uint32(len(x)))
- binary.LittleEndian.PutUint32(s[4:], w.stringOff(x))
-}
-
-func (s *Sym) SetABI(x uint16) { binary.LittleEndian.PutUint16(s[8:], x) }
-func (s *Sym) SetType(x uint8) { s[10] = x }
-func (s *Sym) SetFlag(x uint8) { s[11] = x }
-func (s *Sym) SetFlag2(x uint8) { s[12] = x }
-func (s *Sym) SetSiz(x uint32) { binary.LittleEndian.PutUint32(s[13:], x) }
-func (s *Sym) SetAlign(x uint32) { binary.LittleEndian.PutUint32(s[17:], x) }
-
-func (s *Sym) Write(w *Writer) { w.Bytes(s[:]) }
-
-// for testing
-func (s *Sym) fromBytes(b []byte) { copy(s[:], b) }
-
-// Symbol reference.
-type SymRef struct {
- PkgIdx uint32
- SymIdx uint32
-}
-
-// Hash64
-type Hash64Type [Hash64Size]byte
-
-const Hash64Size = 8
-
-// Hash
-type HashType [HashSize]byte
-
-const HashSize = sha1.Size
-
-// Relocation.
-//
-// Serialized format:
-// Reloc struct {
-// Off int32
-// Siz uint8
-// Type uint8
-// Add int64
-// Sym SymRef
-// }
-type Reloc [RelocSize]byte
-
-const RelocSize = 4 + 1 + 1 + 8 + 8
-
-func (r *Reloc) Off() int32 { return int32(binary.LittleEndian.Uint32(r[:])) }
-func (r *Reloc) Siz() uint8 { return r[4] }
-func (r *Reloc) Type() uint8 { return r[5] }
-func (r *Reloc) Add() int64 { return int64(binary.LittleEndian.Uint64(r[6:])) }
-func (r *Reloc) Sym() SymRef {
- return SymRef{binary.LittleEndian.Uint32(r[14:]), binary.LittleEndian.Uint32(r[18:])}
-}
-
-func (r *Reloc) SetOff(x int32) { binary.LittleEndian.PutUint32(r[:], uint32(x)) }
-func (r *Reloc) SetSiz(x uint8) { r[4] = x }
-func (r *Reloc) SetType(x uint8) { r[5] = x }
-func (r *Reloc) SetAdd(x int64) { binary.LittleEndian.PutUint64(r[6:], uint64(x)) }
-func (r *Reloc) SetSym(x SymRef) {
- binary.LittleEndian.PutUint32(r[14:], x.PkgIdx)
- binary.LittleEndian.PutUint32(r[18:], x.SymIdx)
-}
-
-func (r *Reloc) Set(off int32, size uint8, typ uint8, add int64, sym SymRef) {
- r.SetOff(off)
- r.SetSiz(size)
- r.SetType(typ)
- r.SetAdd(add)
- r.SetSym(sym)
-}
-
-func (r *Reloc) Write(w *Writer) { w.Bytes(r[:]) }
-
-// for testing
-func (r *Reloc) fromBytes(b []byte) { copy(r[:], b) }
-
-// Aux symbol info.
-//
-// Serialized format:
-// Aux struct {
-// Type uint8
-// Sym SymRef
-// }
-type Aux [AuxSize]byte
-
-const AuxSize = 1 + 8
-
-// Aux Type
-const (
- AuxGotype = iota
- AuxFuncInfo
- AuxFuncdata
- AuxDwarfInfo
- AuxDwarfLoc
- AuxDwarfRanges
- AuxDwarfLines
-
- // TODO: more. Pcdata?
-)
-
-func (a *Aux) Type() uint8 { return a[0] }
-func (a *Aux) Sym() SymRef {
- return SymRef{binary.LittleEndian.Uint32(a[1:]), binary.LittleEndian.Uint32(a[5:])}
-}
-
-func (a *Aux) SetType(x uint8) { a[0] = x }
-func (a *Aux) SetSym(x SymRef) {
- binary.LittleEndian.PutUint32(a[1:], x.PkgIdx)
- binary.LittleEndian.PutUint32(a[5:], x.SymIdx)
-}
-
-func (a *Aux) Write(w *Writer) { w.Bytes(a[:]) }
-
-// for testing
-func (a *Aux) fromBytes(b []byte) { copy(a[:], b) }
-
-// Referenced symbol flags.
-//
-// Serialized format:
-// RefFlags struct {
-// Sym symRef
-// Flag uint8
-// Flag2 uint8
-// }
-type RefFlags [RefFlagsSize]byte
-
-const RefFlagsSize = 8 + 1 + 1
-
-func (r *RefFlags) Sym() SymRef {
- return SymRef{binary.LittleEndian.Uint32(r[:]), binary.LittleEndian.Uint32(r[4:])}
-}
-func (r *RefFlags) Flag() uint8 { return r[8] }
-func (r *RefFlags) Flag2() uint8 { return r[9] }
-
-func (r *RefFlags) SetSym(x SymRef) {
- binary.LittleEndian.PutUint32(r[:], x.PkgIdx)
- binary.LittleEndian.PutUint32(r[4:], x.SymIdx)
-}
-func (r *RefFlags) SetFlag(x uint8) { r[8] = x }
-func (r *RefFlags) SetFlag2(x uint8) { r[9] = x }
-
-func (r *RefFlags) Write(w *Writer) { w.Bytes(r[:]) }
-
-// Referenced symbol name.
-//
-// Serialized format:
-// RefName struct {
-// Sym symRef
-// Name string
-// }
-type RefName [RefNameSize]byte
-
-const RefNameSize = 8 + stringRefSize
-
-func (n *RefName) Sym() SymRef {
- return SymRef{binary.LittleEndian.Uint32(n[:]), binary.LittleEndian.Uint32(n[4:])}
-}
-func (n *RefName) Name(r *Reader) string {
- len := binary.LittleEndian.Uint32(n[8:])
- off := binary.LittleEndian.Uint32(n[12:])
- return r.StringAt(off, len)
-}
-
-func (n *RefName) SetSym(x SymRef) {
- binary.LittleEndian.PutUint32(n[:], x.PkgIdx)
- binary.LittleEndian.PutUint32(n[4:], x.SymIdx)
-}
-func (n *RefName) SetName(x string, w *Writer) {
- binary.LittleEndian.PutUint32(n[8:], uint32(len(x)))
- binary.LittleEndian.PutUint32(n[12:], w.stringOff(x))
-}
-
-func (n *RefName) Write(w *Writer) { w.Bytes(n[:]) }
-
-type Writer struct {
- wr *bio.Writer
- stringMap map[string]uint32
- off uint32 // running offset
-}
-
-func NewWriter(wr *bio.Writer) *Writer {
- return &Writer{wr: wr, stringMap: make(map[string]uint32)}
-}
-
-func (w *Writer) AddString(s string) {
- if _, ok := w.stringMap[s]; ok {
- return
- }
- w.stringMap[s] = w.off
- w.RawString(s)
-}
-
-func (w *Writer) stringOff(s string) uint32 {
- off, ok := w.stringMap[s]
- if !ok {
- panic(fmt.Sprintf("writeStringRef: string not added: %q", s))
- }
- return off
-}
-
-func (w *Writer) StringRef(s string) {
- w.Uint32(uint32(len(s)))
- w.Uint32(w.stringOff(s))
-}
-
-func (w *Writer) RawString(s string) {
- w.wr.WriteString(s)
- w.off += uint32(len(s))
-}
-
-func (w *Writer) Bytes(s []byte) {
- w.wr.Write(s)
- w.off += uint32(len(s))
-}
-
-func (w *Writer) Uint64(x uint64) {
- var b [8]byte
- binary.LittleEndian.PutUint64(b[:], x)
- w.wr.Write(b[:])
- w.off += 8
-}
-
-func (w *Writer) Uint32(x uint32) {
- var b [4]byte
- binary.LittleEndian.PutUint32(b[:], x)
- w.wr.Write(b[:])
- w.off += 4
-}
-
-func (w *Writer) Uint16(x uint16) {
- var b [2]byte
- binary.LittleEndian.PutUint16(b[:], x)
- w.wr.Write(b[:])
- w.off += 2
-}
-
-func (w *Writer) Uint8(x uint8) {
- w.wr.WriteByte(x)
- w.off++
-}
-
-func (w *Writer) Offset() uint32 {
- return w.off
-}
-
-type Reader struct {
- b []byte // mmapped bytes, if not nil
- readonly bool // whether b is backed with read-only memory
-
- rd io.ReaderAt
- start uint32
- h Header // keep block offsets
-}
-
-func NewReaderFromBytes(b []byte, readonly bool) *Reader {
- r := &Reader{b: b, readonly: readonly, rd: bytes.NewReader(b), start: 0}
- err := r.h.Read(r)
- if err != nil {
- return nil
- }
- return r
-}
-
-func (r *Reader) BytesAt(off uint32, len int) []byte {
- if len == 0 {
- return nil
- }
- end := int(off) + len
- return r.b[int(off):end:end]
-}
-
-func (r *Reader) uint64At(off uint32) uint64 {
- b := r.BytesAt(off, 8)
- return binary.LittleEndian.Uint64(b)
-}
-
-func (r *Reader) int64At(off uint32) int64 {
- return int64(r.uint64At(off))
-}
-
-func (r *Reader) uint32At(off uint32) uint32 {
- b := r.BytesAt(off, 4)
- return binary.LittleEndian.Uint32(b)
-}
-
-func (r *Reader) int32At(off uint32) int32 {
- return int32(r.uint32At(off))
-}
-
-func (r *Reader) uint16At(off uint32) uint16 {
- b := r.BytesAt(off, 2)
- return binary.LittleEndian.Uint16(b)
-}
-
-func (r *Reader) uint8At(off uint32) uint8 {
- b := r.BytesAt(off, 1)
- return b[0]
-}
-
-func (r *Reader) StringAt(off uint32, len uint32) string {
- b := r.b[off : off+len]
- if r.readonly {
- return toString(b) // backed by RO memory, ok to make unsafe string
- }
- return string(b)
-}
-
-func toString(b []byte) string {
- if len(b) == 0 {
- return ""
- }
-
- var s string
- hdr := (*unsafeheader.String)(unsafe.Pointer(&s))
- hdr.Data = unsafe.Pointer(&b[0])
- hdr.Len = len(b)
-
- return s
-}
-
-func (r *Reader) StringRef(off uint32) string {
- l := r.uint32At(off)
- return r.StringAt(r.uint32At(off+4), l)
-}
-
-func (r *Reader) Fingerprint() FingerprintType {
- return r.h.Fingerprint
-}
-
-func (r *Reader) Autolib() []ImportedPkg {
- n := (r.h.Offsets[BlkAutolib+1] - r.h.Offsets[BlkAutolib]) / importedPkgSize
- s := make([]ImportedPkg, n)
- off := r.h.Offsets[BlkAutolib]
- for i := range s {
- s[i].Pkg = r.StringRef(off)
- copy(s[i].Fingerprint[:], r.BytesAt(off+stringRefSize, len(s[i].Fingerprint)))
- off += importedPkgSize
- }
- return s
-}
-
-func (r *Reader) Pkglist() []string {
- n := (r.h.Offsets[BlkPkgIdx+1] - r.h.Offsets[BlkPkgIdx]) / stringRefSize
- s := make([]string, n)
- off := r.h.Offsets[BlkPkgIdx]
- for i := range s {
- s[i] = r.StringRef(off)
- off += stringRefSize
- }
- return s
-}
-
-func (r *Reader) NPkg() int {
- return int(r.h.Offsets[BlkPkgIdx+1]-r.h.Offsets[BlkPkgIdx]) / stringRefSize
-}
-
-func (r *Reader) Pkg(i int) string {
- off := r.h.Offsets[BlkPkgIdx] + uint32(i)*stringRefSize
- return r.StringRef(off)
-}
-
-func (r *Reader) NFile() int {
- return int(r.h.Offsets[BlkFile+1]-r.h.Offsets[BlkFile]) / stringRefSize
-}
-
-func (r *Reader) File(i int) string {
- off := r.h.Offsets[BlkFile] + uint32(i)*stringRefSize
- return r.StringRef(off)
-}
-
-func (r *Reader) NSym() int {
- return int(r.h.Offsets[BlkSymdef+1]-r.h.Offsets[BlkSymdef]) / SymSize
-}
-
-func (r *Reader) NHashed64def() int {
- return int(r.h.Offsets[BlkHashed64def+1]-r.h.Offsets[BlkHashed64def]) / SymSize
-}
-
-func (r *Reader) NHasheddef() int {
- return int(r.h.Offsets[BlkHasheddef+1]-r.h.Offsets[BlkHasheddef]) / SymSize
-}
-
-func (r *Reader) NNonpkgdef() int {
- return int(r.h.Offsets[BlkNonpkgdef+1]-r.h.Offsets[BlkNonpkgdef]) / SymSize
-}
-
-func (r *Reader) NNonpkgref() int {
- return int(r.h.Offsets[BlkNonpkgref+1]-r.h.Offsets[BlkNonpkgref]) / SymSize
-}
-
-// SymOff returns the offset of the i-th symbol.
-func (r *Reader) SymOff(i uint32) uint32 {
- return r.h.Offsets[BlkSymdef] + uint32(i*SymSize)
-}
-
-// Sym returns a pointer to the i-th symbol.
-func (r *Reader) Sym(i uint32) *Sym {
- off := r.SymOff(i)
- return (*Sym)(unsafe.Pointer(&r.b[off]))
-}
-
-// NRefFlags returns the number of referenced symbol flags.
-func (r *Reader) NRefFlags() int {
- return int(r.h.Offsets[BlkRefFlags+1]-r.h.Offsets[BlkRefFlags]) / RefFlagsSize
-}
-
-// RefFlags returns a pointer to the i-th referenced symbol flags.
-// Note: here i is not a local symbol index, just a counter.
-func (r *Reader) RefFlags(i int) *RefFlags {
- off := r.h.Offsets[BlkRefFlags] + uint32(i*RefFlagsSize)
- return (*RefFlags)(unsafe.Pointer(&r.b[off]))
-}
-
-// Hash64 returns the i-th short hashed symbol's hash.
-// Note: here i is the index of short hashed symbols, not all symbols
-// (unlike other accessors).
-func (r *Reader) Hash64(i uint32) uint64 {
- off := r.h.Offsets[BlkHash64] + uint32(i*Hash64Size)
- return r.uint64At(off)
-}
-
-// Hash returns a pointer to the i-th hashed symbol's hash.
-// Note: here i is the index of hashed symbols, not all symbols
-// (unlike other accessors).
-func (r *Reader) Hash(i uint32) *HashType {
- off := r.h.Offsets[BlkHash] + uint32(i*HashSize)
- return (*HashType)(unsafe.Pointer(&r.b[off]))
-}
-
-// NReloc returns the number of relocations of the i-th symbol.
-func (r *Reader) NReloc(i uint32) int {
- relocIdxOff := r.h.Offsets[BlkRelocIdx] + uint32(i*4)
- return int(r.uint32At(relocIdxOff+4) - r.uint32At(relocIdxOff))
-}
-
-// RelocOff returns the offset of the j-th relocation of the i-th symbol.
-func (r *Reader) RelocOff(i uint32, j int) uint32 {
- relocIdxOff := r.h.Offsets[BlkRelocIdx] + uint32(i*4)
- relocIdx := r.uint32At(relocIdxOff)
- return r.h.Offsets[BlkReloc] + (relocIdx+uint32(j))*uint32(RelocSize)
-}
-
-// Reloc returns a pointer to the j-th relocation of the i-th symbol.
-func (r *Reader) Reloc(i uint32, j int) *Reloc {
- off := r.RelocOff(i, j)
- return (*Reloc)(unsafe.Pointer(&r.b[off]))
-}
-
-// Relocs returns a pointer to the relocations of the i-th symbol.
-func (r *Reader) Relocs(i uint32) []Reloc {
- off := r.RelocOff(i, 0)
- n := r.NReloc(i)
- return (*[1 << 20]Reloc)(unsafe.Pointer(&r.b[off]))[:n:n]
-}
-
-// NAux returns the number of aux symbols of the i-th symbol.
-func (r *Reader) NAux(i uint32) int {
- auxIdxOff := r.h.Offsets[BlkAuxIdx] + i*4
- return int(r.uint32At(auxIdxOff+4) - r.uint32At(auxIdxOff))
-}
-
-// AuxOff returns the offset of the j-th aux symbol of the i-th symbol.
-func (r *Reader) AuxOff(i uint32, j int) uint32 {
- auxIdxOff := r.h.Offsets[BlkAuxIdx] + i*4
- auxIdx := r.uint32At(auxIdxOff)
- return r.h.Offsets[BlkAux] + (auxIdx+uint32(j))*uint32(AuxSize)
-}
-
-// Aux returns a pointer to the j-th aux symbol of the i-th symbol.
-func (r *Reader) Aux(i uint32, j int) *Aux {
- off := r.AuxOff(i, j)
- return (*Aux)(unsafe.Pointer(&r.b[off]))
-}
-
-// Auxs returns the aux symbols of the i-th symbol.
-func (r *Reader) Auxs(i uint32) []Aux {
- off := r.AuxOff(i, 0)
- n := r.NAux(i)
- return (*[1 << 20]Aux)(unsafe.Pointer(&r.b[off]))[:n:n]
-}
-
-// DataOff returns the offset of the i-th symbol's data.
-func (r *Reader) DataOff(i uint32) uint32 {
- dataIdxOff := r.h.Offsets[BlkDataIdx] + i*4
- return r.h.Offsets[BlkData] + r.uint32At(dataIdxOff)
-}
-
-// DataSize returns the size of the i-th symbol's data.
-func (r *Reader) DataSize(i uint32) int {
- dataIdxOff := r.h.Offsets[BlkDataIdx] + i*4
- return int(r.uint32At(dataIdxOff+4) - r.uint32At(dataIdxOff))
-}
-
-// Data returns the i-th symbol's data.
-func (r *Reader) Data(i uint32) []byte {
- dataIdxOff := r.h.Offsets[BlkDataIdx] + i*4
- base := r.h.Offsets[BlkData]
- off := r.uint32At(dataIdxOff)
- end := r.uint32At(dataIdxOff + 4)
- return r.BytesAt(base+off, int(end-off))
-}
-
-// AuxDataBase returns the base offset of the aux data block.
-func (r *Reader) PcdataBase() uint32 {
- return r.h.Offsets[BlkPcdata]
-}
-
-// NRefName returns the number of referenced symbol names.
-func (r *Reader) NRefName() int {
- return int(r.h.Offsets[BlkRefName+1]-r.h.Offsets[BlkRefName]) / RefNameSize
-}
-
-// RefName returns a pointer to the i-th referenced symbol name.
-// Note: here i is not a local symbol index, just a counter.
-func (r *Reader) RefName(i int) *RefName {
- off := r.h.Offsets[BlkRefName] + uint32(i*RefNameSize)
- return (*RefName)(unsafe.Pointer(&r.b[off]))
-}
-
-// ReadOnly returns whether r.BytesAt returns read-only bytes.
-func (r *Reader) ReadOnly() bool {
- return r.readonly
-}
-
-// Flags returns the flag bits read from the object file header.
-func (r *Reader) Flags() uint32 {
- return r.h.Flags
-}
-
-func (r *Reader) Shared() bool { return r.Flags()&ObjFlagShared != 0 }
-func (r *Reader) NeedNameExpansion() bool { return r.Flags()&ObjFlagNeedNameExpansion != 0 }
-func (r *Reader) FromAssembly() bool { return r.Flags()&ObjFlagFromAssembly != 0 }
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-13 07:15:49 +0000