}

// asmPCData assembles a PCDATA pseudo-op.
// PCDATA $2, $705
func (p *Parser) asmPCData(operands [][]lex.Token) {
	if len(operands) != 2 {
		p.errorf("expect two operands for PCDATA")
		return
	}

	// Operand 0 must be an immediate constant.
	key := p.address(operands[0])
	if !p.validImmediate("PCDATA", &key) {
		return
	}

	// we are still in function prologue. We need to fix the
	// SP data and PCDATA.
	spfix := obj.Appendp(p, c.newprog)
	spfix.As = obj.ANOP
	spfix.Spadj = -framesize

	pcdata := c.ctxt.EmitEntryStackMap(c.cursym, spfix, c.newprog)
	pcdata = c.ctxt.StartUnsafePoint(pcdata, c.newprog)

	// MOVD	LR, R5
	p = obj.Appendp(pcdata, c.newprog)
	pPre.To.SetTarget(p)
	p.As = AMOVD
	p.From.Type = obj.TYPE_REG

// whose argument size is unknown (C vararg functions, and
// assembly code without an explicit specification).
// This value is generated by the compiler, assembler, or linker.
const ArgsSizeUnknown = -0x80000000

// IDs for PCDATA and FUNCDATA tables in Go binaries.
//
// These must agree with ../../../runtime/funcdata.h.
const (
	PCDATA_UnsafePoint   = 0
	PCDATA_StackMapIndex = 1
	PCDATA_InlTreeIndex  = 2
	PCDATA_ArgLiveIndex  = 3

		if sz != int64(int32(sz)) {
			base.Fatalf("stack object too big: %v of type %v, size %d", v, t, sz)
		}
		lsym, useGCProg, ptrdata := reflectdata.GCSym(t)
		if useGCProg {
			ptrdata = -ptrdata
		}
		off = objw.Uint32(x, off, uint32(sz))
		off = objw.Uint32(x, off, uint32(ptrdata))
		off = objw.SymPtrOff(x, off, lsym)
	}

	if base.Flag.Live != 0 {
		for _, v := range vars {

	// we are still in function prologue. We need to fix the
	// SP data and PCDATA.
	spfix := obj.Appendp(last, newprog)
	spfix.As = obj.ANOP
	spfix.Spadj = -framesize

	pcdata := ctxt.EmitEntryStackMap(cursym, spfix, newprog)
	spill := ctxt.StartUnsafePoint(pcdata, newprog)
	pcdata = cursym.Func().SpillRegisterArgs(spill, newprog)

	call := obj.Appendp(pcdata, newprog)
	call.Pos = cursym.Func().Text.Pos

	0x003e 00062 (x.go:5)	ADDQ	$16, SP
	0x0042 00066 (x.go:5)	RET
	0x0043 00067 (x.go:5)	NOP
	0x0043 00067 (x.go:3)	PCDATA	$1, $-1
	0x0043 00067 (x.go:3)	PCDATA	$0, $-1
	0x0043 00067 (x.go:3)	CALL	runtime.morestack_noctxt(SB)
	0x0048 00072 (x.go:3)	JMP	0
...
</pre>

<p>
The <code>FUNCDATA</code> and <code>PCDATA</code> directives contain information
for use by the garbage collector; they are introduced by the compiler.
</p>

<p>

	// arrays that reference the pcdata and funcdata locations for this
	// function.

	// pcdata contains the offset into moduledata.pctab for the start of
	// that index's table. e.g.,
	// &moduledata.pctab[_func.pcdata[_PCDATA_UnsafePoint]] is the start of
	// the unsafe point table.
	//
	// An offset of 0 indicates that there is no table.
	//
	// pcdata [npcdata]uint32

		if md.bad {
			continue
		}
		*modules = append(*modules, md)
		if md.gcdatamask == (bitvector{}) {
			scanDataSize := md.edata - md.data
			md.gcdatamask = progToPointerMask((*byte)(unsafe.Pointer(md.gcdata)), scanDataSize)
			scanBSSSize := md.ebss - md.bss
			md.gcbssmask = progToPointerMask((*byte)(unsafe.Pointer(md.gcbss)), scanBSSSize)

		}
	}
	w.Uint32(naux)

	// Data indexes
	h.Offsets[goobj.BlkDataIdx] = w.Offset()
	dataOff := int64(0)
	for _, list := range lists {
		for _, s := range list {
			w.Uint32(uint32(dataOff))
			dataOff += int64(len(s.P))
			if file := s.File(); file != nil {
				dataOff += int64(file.Size)
			}
		}
	}
	if int64(uint32(dataOff)) != dataOff {
		log.Fatalf("data too large")
	}

	if int64(int(siz)) != siz {
		log.Fatalf("symgrow size %d too long", siz)
	}
	if int64(len(ms.data)) >= siz {
		return
	}
	if cap(ms.data) < int(siz) {
		cl := len(ms.data)
		ms.data = append(ms.data, make([]byte, int(siz)+1-cl)...)
		ms.data = ms.data[0:cl]
	}
	ms.data = ms.data[:siz]
}

// Convert a local index to a global index.
func (l *Loader) toGlobal(r *oReader, i uint32) Sym {