...

Package objw

import "cmd/compile/internal/objw"
Overview
Index

Overview ▾

func BitVec

func BitVec(s *obj.LSym, off int, bv bitvec.BitVec) int

BitVec writes the contents of bv into s as sequence of bytes in little-endian order, and returns the next unused offset.

func Bool

func Bool(s *obj.LSym, off int, v bool) int

func Global

func Global(s *obj.LSym, width int32, flags int16)

func LosesStmtMark

func LosesStmtMark(as obj.As) bool

LosesStmtMark reports whether a prog with op as loses its statement mark on the way to DWARF. The attributes from some opcodes are lost in translation. TODO: this is an artifact of how funcpctab combines information for instructions at a single PC. Should try to fix it there.

func SymPtr

func SymPtr(s *obj.LSym, off int, x *obj.LSym, xoff int) int

func SymPtrOff

func SymPtrOff(s *obj.LSym, off int, x *obj.LSym) int

func SymPtrWeak

func SymPtrWeak(s *obj.LSym, off int, x *obj.LSym, xoff int) int

func SymPtrWeakOff

func SymPtrWeakOff(s *obj.LSym, off int, x *obj.LSym) int

func Uint16

func Uint16(s *obj.LSym, off int, v uint16) int

func Uint32

func Uint32(s *obj.LSym, off int, v uint32) int

func Uint8

func Uint8(s *obj.LSym, off int, v uint8) int

Uint8 writes an unsigned byte v into s at offset off, and returns the next unused offset (i.e., off+1).

func UintN

func UintN(s *obj.LSym, off int, v uint64, wid int) int

UintN writes an unsigned integer v of size wid bytes into s at offset off, and returns the next unused offset.

func Uintptr

func Uintptr(s *obj.LSym, off int, v uint64) int

func Uvarint

func Uvarint(s *obj.LSym, off int, v uint64) int

Uvarint writes a varint v into s at offset off, and returns the next unused offset.

type Progs

Progs accumulates Progs for a function and converts them into machine code.

type Progs struct {
    Text       *obj.Prog  // ATEXT Prog for this function
    Next       *obj.Prog  // next Prog
    PC         int64      // virtual PC; count of Progs
    Pos        src.XPos   // position to use for new Progs
    CurFunc    *ir.Func   // fn these Progs are for
    Cache      []obj.Prog // local progcache
    CacheIndex int        // first free element of progcache

    NextLive StackMapIndex // liveness index for the next Prog
    PrevLive StackMapIndex // last emitted liveness index

    NextUnsafe bool // unsafe mark for the next Prog
    PrevUnsafe bool // last emitted unsafe mark
}

func NewProgs

func NewProgs(fn *ir.Func, worker int) *Progs

NewProgs returns a new Progs for fn. worker indicates which of the backend workers will use the Progs.

func (*Progs) Append

func (pp *Progs) Append(p *obj.Prog, as obj.As, ftype obj.AddrType, freg int16, foffset int64, ttype obj.AddrType, treg int16, toffset int64) *obj.Prog

func (*Progs) Clear

func (pp *Progs) Clear(p *obj.Prog)

func (*Progs) Flush

func (pp *Progs) Flush()

Flush converts from pp to machine code.

func (*Progs) Free

func (pp *Progs) Free()

Free clears pp and any associated resources.

func (*Progs) NewProg

func (pp *Progs) NewProg() *obj.Prog

func (*Progs) Prog

func (pp *Progs) Prog(as obj.As) *obj.Prog

Prog adds a Prog with instruction As to pp.

func (*Progs) SetText

func (pp *Progs) SetText(fn *ir.Func)

type StackMapIndex

type StackMapIndex int

StackMapDontCare indicates that the stack map index at a Value doesn't matter.

This is a sentinel value that should never be emitted to the PCDATA stream. We use -1000 because that's obviously never a valid stack index (but -1 is).

const StackMapDontCare StackMapIndex = -1000

func (StackMapIndex) StackMapValid

func (s StackMapIndex) StackMapValid() bool