AND	$0xff, X13, X12
	MOV	ZERO, X14	// count
	ADD	X10, X11	// end

	PCALIGN	$16
loop:
	BEQ	X10, X11, done
	MOVBU	(X10), X15
	ADD	$1, X10
	BNE	X12, X15, loop
	ADD	$1, X14
	JMP	loop

done:
	MOV	X14, X10
	RET

TEXT ·CountString<ABIInternal>(SB),NOSPLIT,$0-32
	// X10 = s_base
	// X11 = s_len
	// X12 = byte to count
	AND	$0xff, X12
	MOV	ZERO, X14	// count
	ADD	X10, X11	// end

				p.Spadj = int32(-p.From.Offset)
			}

		case obj.AGETCALLERPC:
			if cursym.Leaf() {
				// MOV LR, Rd
				p.As = mov
				p.From.Type = obj.TYPE_REG
				p.From.Reg = REGLINK
			} else {
				// MOV (RSP), Rd
				p.As = mov
				p.From.Type = obj.TYPE_MEM
				p.From.Reg = REGSP
			}
		}

		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {

{"Name":"FMOV (register)","Bits":"0|0|0|1|1|1|1|0|01:2|1|0|0|0|0|0|0|1|0|0|0|0|Rn:5|Rd:5","Arch":"Double-precision variant","Syntax":"FMOV <Dd>, <Dn>","Code":"","Alias":""},
{"Name":"FMOV (general)","Bits":"0|0|0|1|1|1|1|0|00:2|1|00:2|111:3|0|0|0|0|0|0|Rn:5|Rd:5","Arch":"32-bit to single-precision variant","Syntax":"FMOV <Sd>, <Wn>","Code":"","Alias":""},

	fmt.Fprintln(w, "TEXT runtime·duffcopy<ABIInternal>(SB), NOSPLIT|NOFRAME, $0-0")
	for i := 0; i < 128; i++ {
		fmt.Fprintln(w, "\tMOV\t(X24), X31")
		fmt.Fprintln(w, "\tADD\t$8, X24")
		fmt.Fprintln(w, "\tMOV\tX31, (X25)")
		fmt.Fprintln(w, "\tADD\t$8, X25")
		fmt.Fprintln(w)
	}
	fmt.Fprintln(w, "\tRET")

// func archMax(x, y float64) float64
TEXT ·archMax(SB),NOSPLIT,$0
	MOVD	x+0(FP), F0
	MOVD	y+8(FP), F1
	FCLASSD	F0, X5
	FCLASSD	F1, X6

	// +Inf special cases
	MOV	$PosInf, X7
	BEQ	X7, X5, isMaxX
	BEQ	X7, X6, isMaxY

	// NaN special cases
	MOV	$NaN, X7
	BEQ	X7, X5, isMaxX
	BEQ	X7, X6, isMaxY

	// normal case
	FMAXD	F0, F1, F0
	MOVD	F0, ret+16(FP)
	RET

isMaxX: // return x
	MOVD	F0, ret+16(FP)

	buf.WriteString(`// Code generated by wincallback.go using 'go generate'. DO NOT EDIT.

// External code calls into callbackasm at an offset corresponding
// to the callback index. Callbackasm is a table of MOV and B instructions.
// The MOV instruction loads R12 with the callback index, and the
// B instruction branches to callbackasm1.
// callbackasm1 takes the callback index from R12 and

// license that can be found in the LICENSE file.

#include "textflag.h"

TEXT _rt0_riscv64_openbsd(SB),NOSPLIT|NOFRAME,$0
	MOV	0(X2), A0	// argc
	ADD	$8, X2, A1	// argv
	JMP	main(SB)

TEXT main(SB),NOSPLIT|NOFRAME,$0
	MOV	$runtime·rt0_go(SB), T0

				p.Spadj = int32(-p.From.Offset)
			}

		case obj.AGETCALLERPC:
			if cursym.Leaf() {
				/* MOV LR, Rd */
				p.As = mov
				p.From.Type = obj.TYPE_REG
				p.From.Reg = REGLINK
			} else {
				/* MOV (RSP), Rd */
				p.As = mov
				p.From.Type = obj.TYPE_MEM
				p.From.Reg = REGSP
			}
		}

		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {

	CRnEQ represents CR bit 2 of CR field n. (0-7)
	CRnSO represents CR bit 3 of CR field n. (0-7)

# GOPPC64 >= power10 and its effects on Go asm

When GOPPC64=power10 is used to compile a Go program for ppc64le/linux, MOV*, FMOV*, and ADD
opcodes which would require 2 or more machine instructions to emulate a 32 bit constant, or
symbolic reference are implemented using prefixed instructions.

	// amd64:"(MOVB\t[$]0)|(XORL\t[A-Z][A-Z0-9]+, [A-Z][A-Z0-9]+)",-"FCMP",-"MOVB\t[$]1"
	// s390x:"MOV(B|BZ|D)\t[$]0,",-"FCMPU",-"MOV(B|BZ|D)\t[$]1,"
	return 0.5 == float64(uint32(1)) || 1.5 > float64(uint64(1<<63))
}

func constantCheck32() bool {
	// amd64:"MOV(B|L)\t[$]1",-"FCMP",-"MOV(B|L)\t[$]0"
	// s390x:"MOV(B|BZ|D)\t[$]1,",-"FCMPU",-"MOV(B|BZ|D)\t[$]0,"
	return float32(0.5) <= float32(int64(1)) && float32(1.5) >= float32(int32(-1<<31))