ActiveGo 1.8Package plan9obj
Overview ▹
Index ▹
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 ¶
A File represents an open Plan 9 a.out file.
type File struct {
FileHeader
Sections []*Section
// contains filtered or unexported fields
}
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 ¶
A FileHeader represents a Plan 9 a.out file header.
type FileHeader struct {
Magic uint32
Bss uint32
Entry uint64
PtrSize int
LoadAddress uint64
HdrSize uint64
}
type Section ¶
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 ¶
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 ¶
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 ¶
A Symbol represents an entry in a Plan 9 a.out symbol table section.
type Sym struct {
Value uint64
Type rune
Name string
}