"LDADDALH",
	"LDADDALW",
	"LDADDAW",
	"LDADDB",
	"LDADDD",
	"LDADDH",
	"LDADDLB",
	"LDADDLD",
	"LDADDLH",
	"LDADDLW",
	"LDADDW",
	"LDAR",
	"LDARB",
	"LDARH",
	"LDARW",
	"LDAXP",
	"LDAXPW",
	"LDAXR",
	"LDAXRB",
	"LDAXRH",
	"LDAXRW",
	"LDCLRAB",
	"LDCLRAD",
	"LDCLRAH",
	"LDCLRALB",
	"LDCLRALD",
	"LDCLRALH",
	"LDCLRALW",
	"LDCLRAW",

	HVC $61428                                 // 82fe1dd4
	ISB $1                                     // df3103d5
	ISB $15                                    // df3f03d5
	LDARW (R12), R29                           // 9dfddf88
	LDARW (R30), R22                           // d6ffdf88
	LDARW (RSP), R22                           // f6ffdf88
	LDAR (R27), R22                            // 76ffdfc8
	LDARB (R25), R2                            // 22ffdf08

TEXT ·Xadduintptr(SB), NOSPLIT, $0-24
	B	·Xadd64(SB)

TEXT ·Casp1(SB), NOSPLIT, $0-25
	B ·Cas64(SB)

// uint32 ·Load(uint32 volatile* addr)
TEXT ·Load(SB),NOSPLIT,$0-12
	MOVD	ptr+0(FP), R0
	LDARW	(R0), R0
	MOVW	R0, ret+8(FP)
	RET

// uint8 ·Load8(uint8 volatile* addr)
TEXT ·Load8(SB),NOSPLIT,$0-9
	MOVD	ptr+0(FP), R0
	LDARB	(R0), R0
	MOVB	R0, ret+8(FP)
	RET

TEXT runtime·nanotime_trampoline(SB),NOSPLIT,$40
	MOVD	R0, R19
	BL	libc_mach_absolute_time(SB)
	MOVD	R0, 0(R19)
	MOVW	timebase<>+machTimebaseInfo_numer(SB), R20
	MOVD	$timebase<>+machTimebaseInfo_denom(SB), R21
	LDARW	(R21), R21	// atomic read
	CMP	$0, R21
	BNE	initialized

	SUB	$(machTimebaseInfo__size+15)/16*16, RSP
	MOVD	RSP, R0
	BL	libc_mach_timebase_info(SB)
	MOVW	machTimebaseInfo_numer(RSP), R20

		{name: "LDAR", argLength: 2, reg: gpload, asm: "LDAR", faultOnNilArg0: true},
		{name: "LDARB", argLength: 2, reg: gpload, asm: "LDARB", faultOnNilArg0: true},
		{name: "LDARW", argLength: 2, reg: gpload, asm: "LDARW", faultOnNilArg0: true},

		// atomic stores.
		// store arg1 to arg0. arg2=mem. returns memory. auxint must be zero.

(JumpTable idx) => (JUMPTABLE {makeJumpTableSym(b)} idx (MOVDaddr <typ.Uintptr> {makeJumpTableSym(b)} (SB)))

// atomic intrinsics
// Note: these ops do not accept offset.
(AtomicLoad8   ...) => (LDARB ...)
(AtomicLoad32  ...) => (LDARW ...)
(AtomicLoad64  ...) => (LDAR  ...)
(AtomicLoadPtr ...) => (LDAR  ...)

(AtomicStore8       ...) => (STLRB ...)
(AtomicStore32      ...) => (STLRW ...)
(AtomicStore64      ...) => (STLR  ...)

			},
			outputs: []outputInfo{
				{0, 670826495}, // R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R19 R20 R21 R22 R23 R24 R25 R26 R30
			},
		},
	},
	{
		name:           "LDARW",
		argLen:         2,
		faultOnNilArg0: true,
		asm:            arm64.ALDARW,
		reg: regInfo{
			inputs: []inputInfo{