BIC     $0x7, R13		// align for ELF ABI
	BL	libc_kqueue(SB)
	MOVW	R9, R13
	RET

TEXT runtime·kevent_trampoline(SB),NOSPLIT,$0
	MOVW	R13, R9
	SUB	$8, R13
	BIC     $0x7, R13		// align for ELF ABI
	MOVW	4(R0), R1		// arg 2 keventt
	MOVW	8(R0), R2		// arg 3 nch
	MOVW	12(R0), R3		// arg 4 ev
	MOVW	16(R0), R4		// arg 5 nev (on stack)
	MOVW	R4, 0(R13)
	MOVW	20(R0), R5		// arg 6 ts (on stack)
	MOVW	R5, 4(R13)

	SHA256ROUND0(5, 0x59f111f1, R11, R12, R13, R14, R15, R8, R9, R10)
	SHA256ROUND0(6, 0x923f82a4, R10, R11, R12, R13, R14, R15, R8, R9)
	SHA256ROUND0(7, 0xab1c5ed5, R9, R10, R11, R12, R13, R14, R15, R8)
	SHA256ROUND0(8, 0xd807aa98, R8, R9, R10, R11, R12, R13, R14, R15)
	SHA256ROUND0(9, 0x12835b01, R15, R8, R9, R10, R11, R12, R13, R14)
	SHA256ROUND0(10, 0x243185be, R14, R15, R8, R9, R10, R11, R12, R13)

	SHA512ROUND1(23, 0x76f988da831153b5, R9, R10, R11, R12, R13, R14, R15, R8)
	SHA512ROUND1(24, 0x983e5152ee66dfab, R8, R9, R10, R11, R12, R13, R14, R15)
	SHA512ROUND1(25, 0xa831c66d2db43210, R15, R8, R9, R10, R11, R12, R13, R14)
	SHA512ROUND1(26, 0xb00327c898fb213f, R14, R15, R8, R9, R10, R11, R12, R13)
	SHA512ROUND1(27, 0xbf597fc7beef0ee4, R13, R14, R15, R8, R9, R10, R11, R12)

	MOVW	ctx+12(FP), R2
	MOVW	fn+0(FP), R11
	MOVW	R13, R4
	SUB	$24, R13
	BIC	$0x7, R13 // alignment for ELF ABI
	BL	(R11)
	MOVW	R4, R13
	RET

TEXT runtime·usleep(SB),NOSPLIT,$16
	MOVW usec+0(FP), R0
	CALL runtime·usplitR0(SB)
	// 0(R13) is the saved LR, don't use it
	MOVW R0, 4(R13) // tv_sec.low
	MOVW $0, R0
	MOVW R0, 8(R13) // tv_sec.high
	MOVW $1000, R2
	MUL R1, R2

	MOVW	R4, 12(R13)
	MOVW	R5, 16(R13)
	MOVW	R6, 20(R13)
	MOVW	R7, 24(R13)
	MOVW	R8, 28(R13)
	MOVW	g, 32(R13)
	MOVW	R11, 36(R13)

	// Skip floating point registers on goarmsoftfp != 0.
	MOVB    runtime·goarmsoftfp(SB), R11
	CMP	$0, R11
	BNE     skipfpsave
	MOVD	F8, (40+8*0)(R13)
	MOVD	F9, (40+8*1)(R13)
	MOVD	F10, (40+8*2)(R13)
	MOVD	F11, (40+8*3)(R13)
	MOVD	F12, (40+8*4)(R13)

	MOVW $2, R4	// arg 5 - vers
	MOVW R4, 4(R13)
	ADD $4, R13	// pass arg 5 on stack
	SWI $SYS___sigaction_sigtramp
	SUB $4, R13
	MOVW.CS $3, R8	// crash on syscall failure
	MOVW.CS R8, (R8)
	RET

TEXT runtime·sigfwd(SB),NOSPLIT,$0-16
	MOVW	sig+4(FP), R0
	MOVW	info+8(FP), R1
	MOVW	ctx+12(FP), R2
	MOVW	fn+0(FP), R11
	MOVW	R13, R4
	SUB	$24, R13
	BIC	$0x7, R13 // alignment for ELF ABI
	BL	(R11)

//	{
//		outcode(int($1), &$2, 0, &$4);
//	}
	SUB	R14, R13	// 01ae6822
	SUBU	R14, R13	// 01ae6823
	SUBV	R4, R3		// 0064182e
	SUBVU	R4, R3		// 0064182f
//	LSUBW imm ',' rreg
//	{
//		outcode(int($1), &$2, 0, &$4);
//	}
	SUB	$6512, R13	// 21ade690
	SUB	$-6512, R13	// 21ad1970
	SUBU	$6512, R13	// 25ade690
	SUBV	$9531, R16	// 6210dac5
	SUBV	$-9531, R13	// 61ad253b
	SUBVU	$9531, R16	// 6610dac5

	CMP	$0, R0
	BEQ	3(PC)
	MOVW	R0, ret+20(FP)
	RET

	// Paranoia: check that SP is as we expect. Use R13 to avoid linker 'fixup'
	NOP	R13	// tell vet SP/R13 changed - stop checking offsets
	MOVW	12(R13), R0
	MOVW	$1234, R1
	CMP	R0, R1
	BEQ	2(PC)
	BL	runtime·abort(SB)

	MOVW	0(R13), R8    // m
	MOVW	4(R13), R0    // g

	CMP	$0, R8
	BEQ	nog
	CMP	$0, R0
	BEQ	nog

	MOVW	R0, g

	SHA256ROUND0(5, 0x59f111f1, R11, R12, R13, R14, R15, R8, R9, R10)
	SHA256ROUND0(6, 0x923f82a4, R10, R11, R12, R13, R14, R15, R8, R9)
	SHA256ROUND0(7, 0xab1c5ed5, R9, R10, R11, R12, R13, R14, R15, R8)
	SHA256ROUND0(8, 0xd807aa98, R8, R9, R10, R11, R12, R13, R14, R15)
	SHA256ROUND0(9, 0x12835b01, R15, R8, R9, R10, R11, R12, R13, R14)
	SHA256ROUND0(10, 0x243185be, R14, R15, R8, R9, R10, R11, R12, R13)

	ORR	R7, R9
	LSL	R3, R6, R8
	SUB	$2, R1
	STP.W	(R9, R10), -16(R0)
loop:
	CBZ	R1, done
	LDP.W	-32(R2), (R10, R11)
	LDP	16(R2), (R12, R13)
	LSR	R4, R13, R23
	ORR	R8, R23		// z[i] = (x[i] << s) | (x[i-1] >> (64 - s))
	LSL	R3, R13
	LSR	R4, R12, R22
	ORR	R13, R22
	LSL	R3, R12
	LSR	R4, R11, R21
	ORR	R12, R21
	LSL	R3, R11
	LSR	R4, R10, R20
	ORR	R11, R20
	LSL	R3, R10, R8