Package plan9obj

• import "debug/plan9obj"
• Overview
• Index

Overview

Package plan9obj implements access to Plan 9 a.out object files.

Index

• Constants
• type File
• func NewFile(r io.ReaderAt) (*File, error)
• func Open(name string) (*File, error)
• func (f *File) Close() error
• func (f *File) Section(name string) *Section
• func (f *File) Symbols() ([]Sym, error)
• type FileHeader
• type Section
• func (s *Section) Data() ([]byte, error)
• func (s *Section) Open() io.ReadSeeker
• type SectionHeader
• type Sym

Package files

file.go plan9obj.go

Constants

const (
    Magic64 = 0x8000 // 64-bit expanded header

    Magic386   = (4*11+0)*11 + 7
    MagicAMD64 = (4*26+0)*26 + 7 + Magic64
    MagicARM   = (4*20+0)*20 + 7
)

type File 1.3

A File represents an open Plan 9 a.out file.

type File struct {
    FileHeader
    Sections []*Section
    // contains filtered or unexported fields
}

func NewFile 1.3

func NewFile(r io.ReaderAt) (*File, error)

NewFile creates a new File for accessing a Plan 9 binary in an underlying reader. The Plan 9 binary is expected to start at position 0 in the ReaderAt.

func Open 1.3

func Open(name string) (*File, error)

Open opens the named file using os.Open and prepares it for use as a Plan 9 a.out binary.

func (*File) Close 1.3

func (f *File) Close() error

Close closes the File. If the File was created using NewFile directly instead of Open, Close has no effect.

func (*File) Section 1.3

func (f *File) Section(name string) *Section

Section returns a section with the given name, or nil if no such section exists.

func (*File) Symbols 1.3

func (f *File) Symbols() ([]Sym, error)

Symbols returns the symbol table for f.

type FileHeader 1.3

A FileHeader represents a Plan 9 a.out file header.

type FileHeader struct {
    Magic       uint32
    Bss         uint32
    Entry       uint64
    PtrSize     int
    LoadAddress uint64 // Go 1.4
    HdrSize     uint64 // Go 1.4
}

type Section 1.3

A Section represents a single section in a Plan 9 a.out file.

type Section struct {
    SectionHeader

    // Embed ReaderAt for ReadAt method.
    // Do not embed SectionReader directly
    // to avoid having Read and Seek.
    // If a client wants Read and Seek it must use
    // Open() to avoid fighting over the seek offset
    // with other clients.
    io.ReaderAt
    // contains filtered or unexported fields
}

func (*Section) Data 1.3

func (s *Section) Data() ([]byte, error)

Data reads and returns the contents of the Plan 9 a.out section.

func (*Section) Open 1.3

func (s *Section) Open() io.ReadSeeker

Open returns a new ReadSeeker reading the Plan 9 a.out section.

type SectionHeader 1.3

A SectionHeader represents a single Plan 9 a.out section header. This structure doesn't exist on-disk, but eases navigation through the object file.

type SectionHeader struct {
    Name   string
    Size   uint32
    Offset uint32
}

type Sym 1.3

A Symbol represents an entry in a Plan 9 a.out symbol table section.

type Sym struct {
    Value uint64
    Type  rune
    Name  string
}