MOVL $0, BX		// i = 0
	MOVL $0, DX		// c = 0
	JMP E1

L1:	MOVL (SI)(BX*4), AX
	ADDL DX, DX		// restore CF
	ADCL (CX)(BX*4), AX
	SBBL DX, DX		// save CF
	MOVL AX, (DI)(BX*4)
	ADDL $1, BX		// i++

E1:	CMPL BX, BP		// i < n
	JL L1

	NEGL DX
	MOVL DX, c+36(FP)
	RET


// func subVV(z, x, y []Word) (c Word)
// (same as addVV except for SBBL instead of ADCL and label names)
TEXT ·subVV(SB),NOSPLIT,$0

		inline = compare.EqStructCost(t) <= 4
	}

	cmpl := n.X
	for cmpl != nil && cmpl.Op() == ir.OCONVNOP {
		cmpl = cmpl.(*ir.ConvExpr).X
	}
	cmpr := n.Y
	for cmpr != nil && cmpr.Op() == ir.OCONVNOP {
		cmpr = cmpr.(*ir.ConvExpr).X
	}

	// Chose not to inline. Call equality function directly.
	if !inline {
		// eq algs take pointers; cmpl and cmpr must be addressable

TEXT ·rawVforkSyscall(SB),NOSPLIT|NOFRAME,$0-24
	MOVL	trap+0(FP), AX	// syscall entry
	MOVL	a1+4(FP), BX
	MOVL	a2+8(FP), CX
	MOVL	a3+12(FP), DX
	POPL	SI // preserve return address
	INVOKE_SYSCALL
	PUSHL	SI
	CMPL	AX, $0xfffff001
	JLS	ok
	MOVL	$-1, r1+16(FP)
	NEGL	AX
	MOVL	AX, err+20(FP)
	RET
ok:
	MOVL	AX, r1+16(FP)
	MOVL	$0, err+20(FP)
	RET

// See issue 53333.
func mimetype(ext string) string {
	// amd64: `CMPB\s1\(.*\), \$104$`,-`cmpstring`
	// arm64: `MOVB\s1\(R.*\), R.*$`, `CMPW\s\$104, R.*$`, -`cmpstring`
	switch ext {
	// amd64: `CMPL\s\(.*\), \$1836345390$`
	// arm64: `MOVD\s\$1836345390`, `CMPW\sR.*, R.*$`
	case ".htm":
		return "A"
	// amd64: `CMPL\s\(.*\), \$1953457454$`
	// arm64: `MOVD\s\$1953457454`, `CMPW\sR.*, R.*$`
	case ".eot":
		return "B"

	MOVL	DX, (2*4)(SP)		// a3

	MOVL	(0*4)(BX), AX		// fn
	CALL	AX

	MOVL	AX, (4*4)(BX)		// r1
	MOVL	DX, (5*4)(BX)		// r2

	// Standard libc functions return -1 on error and set errno.
	CMPL	AX, $-1
	JNE	ok
	CMPL	DX, $-1
	JNE	ok

	// Get error code from libc.
	CALL	libc_errno(SB)
	MOVL	(AX), AX
	MOVW	AX, (6*4)(BX)		// err

ok:
	MOVL	$0, AX			// no error (it's ignored anyway)
	MOVL	BP, SP

	MOVL	$SYS_open, AX
	MOVL	name+0(FP), BX
	MOVL	mode+4(FP), CX
	MOVL	perm+8(FP), DX
	INVOKE_SYSCALL
	CMPL	AX, $0xfffff001
	JLS	2(PC)
	MOVL	$-1, AX
	MOVL	AX, ret+12(FP)
	RET

TEXT runtime·closefd(SB),NOSPLIT,$0
	MOVL	$SYS_close, AX
	MOVL	fd+0(FP), BX
	INVOKE_SYSCALL
	CMPL	AX, $0xfffff001
	JLS	2(PC)
	MOVL	$-1, AX
	MOVL	AX, ret+4(FP)
	RET

TEXT runtime·write1(SB),NOSPLIT,$0

	// s390x:`MOVHBR\t\(.*\), [R]`,`CMPW\t.*, [$]`
	return s == "xx"
}

func CompareString2(s string) bool {
	// amd64:`CMPL\t\(.*\), [$]`
	// arm64:`MOVWU\t\(.*\), [R]`,`CMPW\t.*, [R]`
	// ppc64le:`MOVWZ\t\(.*\), [R]`,`CMPW\t.*, [R]`
	// s390x:`MOVWBR\t\(.*\), [R]`,`CMPW\t.*, [$]`
	return s == "xxxx"
}

func CompareString3(s string) bool {
	// amd64:`CMPQ\t\(.*\), [A-Z]`
	// arm64:-`CMPW\t`

	MOVL	$1, 0(SP)
	CALL	runtime·exit(SB)
	CALL	runtime·abort(SB)

has_cpuid:
	MOVL	$0, AX
	CPUID
	MOVL	AX, SI
	CMPL	AX, $0
	JE	nocpuinfo

	CMPL	BX, $0x756E6547  // "Genu"
	JNE	notintel
	CMPL	DX, $0x49656E69  // "ineI"
	JNE	notintel
	CMPL	CX, $0x6C65746E  // "ntel"
	JNE	notintel
	MOVB	$1, runtime·isIntel(SB)
notintel:

	// Load EAX=1 cpuid flags
	MOVL	$1, AX
	CPUID

	MOVL	trap+0(FP), AX	// syscall entry
	// copy args down
	LEAL	a1+4(FP), SI
	LEAL	sysargs-144(SP), DI
	CLD
	MOVSL
	MOVSL
	MOVSL
	INT	$64
	MOVL	AX, r1+16(FP)
	MOVL	$0, r2+20(FP)
	CMPL	AX, $-1
	JNE	ok3

	LEAL	errbuf-128(SP), AX
	MOVL	AX, sysargs-144(SP)
	MOVL	$128, sysargs1-140(SP)
	MOVL	$SYS_ERRSTR, AX
	INT	$64
	CALL	runtime·exitsyscall(SB)
	MOVL	sysargs-144(SP), AX

	MOVL	(_INTERRUPT_TIME+time_hi2), DI
	CMPL	AX, DI
	JNE	loop

	// w = DI:CX
	// multiply by 100
	MOVL	$100, AX
	MULL	CX
	IMULL	$100, DI
	ADDL	DI, DX
	// w*100 = DX:AX
	MOVL	AX, mono+12(FP)
	MOVL	DX, mono+16(FP)

wall:
	MOVL	(_SYSTEM_TIME+time_hi1), CX
	MOVL	(_SYSTEM_TIME+time_lo), AX
	MOVL	(_SYSTEM_TIME+time_hi2), DX
	CMPL	CX, DX
	JNE	wall

	// w = DX:AX