package plan9obj

import “debug/plan9obj”

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 ❖ type File struct { FileHeader Sections []*Section // contains filtered or unexported fields } A File represents an open Plan 9 a.out file.

func NewFile

❖ 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

❖ 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

❖ 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

❖ 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

❖ func (f *File) Symbols() ([]Sym, error) Symbols returns the symbol table for f.

type FileHeader ❖ type FileHeader struct { Magic uint32 Bss uint32 Entry uint64 PtrSize int LoadAddress uint64 HdrSize uint64 } A FileHeader represents a Plan 9 a.out file header.

type Section ❖ 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

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

func (*Section) Data

❖ func (s *Section) Data() ([]byte, error) Data reads and returns the contents of the Plan 9 a.out section.

func (*Section) Open

❖ func (s *Section) Open() io.ReadSeeker Open returns a new ReadSeeker reading the Plan 9 a.out section.

type SectionHeader ❖ type SectionHeader struct { Name string Size uint32 Offset uint32 } 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 Sym ❖ type Sym struct { Value uint64 Type rune Name string } A Symbol represents an entry in a Plan 9 a.out symbol table section.