MOVW	$0, R11
	MOVW	R11, (g_sched+gobuf_lr)(g)

	// Switch to m->g0 & its stack, call fn.
	MOVW	g, R1
	MOVW	g_m(g), R8
	MOVW	m_g0(R8), R0
	BL	setg<>(SB)
	CMP	g, R1
	B.NE	2(PC)
	B	runtime·badmcall(SB)
	MOVW	fn+0(FP), R0
	MOVW	(g_sched+gobuf_sp)(g), R13
	SUB	$8, R13
	MOVW	R1, 4(R13)
	MOVW	R0, R7
	MOVW	0(R0), R0
	BL	(R0)
	B	runtime·badmcall2(SB)
	RET

	MOVW	R28, 96(R29)
	// R29 is SP.
	// R30 is g.
	// R31 is LR, which was saved by the prologue.

	CALL	runtime·wbBufFlush(SB)

	MOVW	4(R29), R20
	MOVW	8(R29), R21
	MOVW	12(R29), R3
	MOVW	16(R29), R4
	MOVW	20(R29), R5
	MOVW	24(R29), R6
	MOVW	28(R29), R7
	MOVW	32(R29), R8
	MOVW	36(R29), R9
	MOVW	40(R29), R10
	MOVW	44(R29), R11
	MOVW	48(R29), R12
	MOVW	52(R29), R13
	MOVW	56(R29), R14

	// amd64:"MOVQ",-"MOVL",-"SHRQ"
	// arm64:"MOVD",-"MOVW",-"LSR"
	// ppc64le:"MOVD",-"MOVW",-"SRD"
	p.a = uint32(x)
	// amd64:-"MOVL",-"SHRQ"
	// arm64:-"MOVW",-"LSR"
	// ppc64le:-"MOVW",-"SRD"
	p.b = uint32(x >> 32)
}
func store32be(p *struct{ a, b uint32 }, x uint64) {
	// ppc64:"MOVD",-"MOVW",-"SRD"
	// s390x:"MOVD",-"MOVW",-"SRD"
	p.a = uint32(x >> 32)
	// ppc64:-"MOVW",-"SRD"
	// s390x:-"MOVW",-"SRD"

	MOVD	$AT_FDCWD, R0
	MOVD	name+0(FP), R1
	MOVW	mode+8(FP), R2
	MOVW	perm+12(FP), R3
	MOVD	$SYS_openat, R8
	SVC
	CMN	$4095, R0
	BCC	done
	MOVW	$-1, R0
done:
	MOVW	R0, ret+16(FP)
	RET

TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0-12
	MOVW	fd+0(FP), R0
	MOVD	$SYS_close, R8
	SVC
	CMN	$4095, R0
	BCC	done
	MOVW	$-1, R0
done:
	MOVW	R0, ret+8(FP)
	RET

	MOVV	HI, R1		// 00000810
	MOVV	R1, LO		// 00200013
	MOVV	R1, HI		// 00200011


//	LMOVW rreg ',' rreg
//	{
//		outcode(int($1), &$2, 0, &$4);
//	}
	MOVW	R1, R2		// 00011004
	MOVW	LO, R1		// 00000812
	MOVW	HI, R1		// 00000810
	MOVW	R1, LO		// 00200013
	MOVW	R1, HI		// 00200011
	MOVWU	R14, R27	// 000ed83c001bd83e

//	LMOVH rreg ',' rreg
//	{
//		outcode(int($1), &$2, 0, &$4);
//	}

	MOV	$AT_FDCWD, A0
	MOV	name+0(FP), A1
	MOVW	mode+8(FP), A2
	MOVW	perm+12(FP), A3
	MOV	$SYS_openat, A7
	ECALL
	MOV	$-4096, T0
	BGEU	T0, A0, 2(PC)
	MOV	$-1, A0
	MOVW	A0, ret+16(FP)
	RET

// func closefd(fd int32) int32
TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0-12
	MOVW	fd+0(FP), A0
	MOV	$SYS_close, A7
	ECALL
	MOV	$-4096, T0
	BGEU	T0, A0, 2(PC)
	MOV	$-1, A0
	MOVW	A0, ret+8(FP)
	RET

	MOVD	0(R19), R0		// arg 1 - addr
	MOVD	8(R19), R1		// arg 2 - len
	MOVW	16(R19), R2		// arg 3 - prot
	MOVW	20(R19), R3		// arg 4 - flags
	MOVW	24(R19), R4		// arg 5 - fid
	MOVW	28(R19), R5		// arg 6 - offset
	CALL	libc_mmap(SB)
	MOVD	$0, R1
	CMP	$-1, R0
	BNE	noerr
	CALL	libc_errno(SB)
	MOVW	(R0), R1		// errno
	MOVD	$0, R0
noerr:
	MOVD	R0, 32(R19)
	MOVD	R1, 40(R19)
	RET

	SUB	$16, RSP
	MOVD	R0, R19
	MOVW	0(R19), R0	// arg 1 fd
	MOVW	4(R19), R1	// arg 2 cmd
	MOVW	8(R19), R2	// arg 3 arg
	MOVW	R2, (RSP)	// arg 3 is variadic, pass on stack
	BL	libc_fcntl(SB)
	MOVD	$0, R1
	MOVD	$-1, R2
	CMP	R0, R2
	BNE	noerr
	BL	libc_error(SB)
	MOVW	(R0), R1
	MOVW	$-1, R0
noerr:
	MOVW	R0, 12(R19)
	MOVW	R1, 16(R19)
	ADD	$16, RSP
	RET

	pcdata = c.ctxt.StartUnsafePoint(pcdata, c.newprog)

	// MOVW	LR, R3
	movw := obj.Appendp(pcdata, c.newprog)
	movw.As = AMOVW
	movw.From.Type = obj.TYPE_REG
	movw.From.Reg = REGLINK
	movw.To.Type = obj.TYPE_REG
	movw.To.Reg = REG_R3

	bls.To.SetTarget(movw)

	// BL runtime.morestack
	call := obj.Appendp(movw, c.newprog)
	call.As = obj.ACALL
	call.To.Type = obj.TYPE_BRANCH

	BL   runtime·save_g(SB)     // Save g and stack pointer
	MOVW PSALAA, R8
	MOVD LCA64(R8), R8
	MOVD SAVSTACK_ASYNC(R8), R9
	MOVD R15, 0(R9)

	MOVD argv+8(FP), R1   // Move function arguments into registers
	MOVD dsa+16(FP), g
	MOVD fnptr+0(FP), R15

	BYTE $0x0D // Branch to function
	BYTE $0xEF

	BL   runtime·load_g(SB)     // Restore g and stack pointer
	MOVW PSALAA, R8
	MOVD LCA64(R8), R8
	MOVD SAVSTACK_ASYNC(R8), R9