p.To.Type = obj.TYPE_CONST
		p.To.Offset = -1

		pbahead := s.Prog(ppc64.ABEQ)
		pbahead.To.Type = obj.TYPE_BRANCH

		p = s.Prog(v.Op.Asm())
		p.From.Type = obj.TYPE_REG
		p.From.Reg = r1
		p.Reg = r0
		p.To.Type = obj.TYPE_REG
		p.To.Reg = r

		pbover := s.Prog(obj.AJMP)
		pbover.To.Type = obj.TYPE_BRANCH

		p = s.Prog(ppc64.ANEG)
		p.To.Type = obj.TYPE_REG
		p.To.Reg = r

				prog = appendVarint(prog, elemWords-elemPtrs-1)
			}
		}
		// Repeat length-1 times.
		if elemWords < 0x80 {
			prog = append(prog, byte(elemWords|0x80))
		} else {
			prog = append(prog, 0x80)
			prog = appendVarint(prog, elemWords)
		}
		prog = appendVarint(prog, uintptr(length)-1)
		prog = append(prog, 0)
		*(*uint32)(unsafe.Pointer(&prog[0])) = uint32(len(prog) - 4)

}

func isUnsafePoint(p *obj.Prog) bool {
	return p.Mark&USES_REG_TMP == USES_REG_TMP || p.From.Reg == REG_TMP || p.To.Reg == REG_TMP || p.Reg == REG_TMP
}

func ParseSuffix(prog *obj.Prog, cond string) (err error) {
	switch prog.As {
	case AFCVTWS, AFCVTLS, AFCVTWUS, AFCVTLUS, AFCVTWD, AFCVTLD, AFCVTWUD, AFCVTLUD:
		prog.Scond, err = rmSuffixEncode(strings.TrimPrefix(cond, "."))
	}

// This allows for multiple functions to be safely concurrently assembled.
type ctxt5 struct {
	ctxt       *obj.Link
	newprog    obj.ProgAlloc
	cursym     *obj.LSym
	printp     *obj.Prog
	blitrl     *obj.Prog
	elitrl     *obj.Prog
	autosize   int64
	instoffset int64
	pc         int64
	pool       struct {
		start uint32
		size  uint32
		extra uint32
	}
}

type Optab struct {
	as       obj.As

	lock mutex
	data *byte
}

// progToPointerMask returns the 1-bit pointer mask output by the GC program prog.
// size the size of the region described by prog, in bytes.
// The resulting bitvector will have no more than size/goarch.PtrSize bits.
func progToPointerMask(prog *byte, size uintptr) bitvector {
	n := (size/goarch.PtrSize + 7) / 8

func (c *ctxt0) isUnsafePoint(p *obj.Prog) bool {
	// If p explicitly uses REGTMP, it's unsafe to preempt, because the
	// preemption sequence clobbers REGTMP.
	return p.From.Reg == REGTMP || p.To.Reg == REGTMP || p.Reg == REGTMP
}

// isRestartable returns whether p is a multi-instruction sequence that,
// if preempted, can be restarted.
func (c *ctxt0) isRestartable(p *obj.Prog) bool {
	if c.isUnsafePoint(p) {

func (c *ctxt0) isUnsafePoint(p *obj.Prog) bool {
	// If p explicitly uses REGTMP, it's unsafe to preempt, because the
	// preemption sequence clobbers REGTMP.
	return p.From.Reg == REGTMP || p.To.Reg == REGTMP || p.Reg == REGTMP
}

// isRestartable returns whether p is a multi-instruction sequence that,
// if preempted, can be restarted.
func (c *ctxt0) isRestartable(p *obj.Prog) bool {
	if c.isUnsafePoint(p) {

	68:  "too many users",
	69:  "disc quota exceeded",
	70:  "stale NFS file handle",
	71:  "too many levels of remote in path",
	72:  "RPC struct is bad",
	73:  "RPC version wrong",
	74:  "RPC prog. not avail",
	75:  "program version wrong",
	76:  "bad procedure for program",
	77:  "no locks available",
	78:  "function not implemented",
	79:  "inappropriate file type or format",

	68:  "too many users",
	69:  "disc quota exceeded",
	70:  "stale NFS file handle",
	71:  "too many levels of remote in path",
	72:  "RPC struct is bad",
	73:  "RPC version wrong",
	74:  "RPC prog. not avail",
	75:  "program version wrong",
	76:  "bad procedure for program",
	77:  "no locks available",
	78:  "function not implemented",
	79:  "inappropriate file type or format",

	68: "too many users",
	69: "disc quota exceeded",
	70: "stale NFS file handle",
	71: "too many levels of remote in path",
	72: "RPC struct is bad",
	73: "RPC version wrong",
	74: "RPC prog. not avail",
	75: "program version wrong",
	76: "bad procedure for program",
	77: "no locks available",
	78: "function not implemented",
	79: "inappropriate file type or format",
	80: "authentication error",