TS = 0TE = 1FROM = 2N = 3TMP = 3					/* N and TMP don't overlap */TMP1 = 4 TEXT memcpy(SB), $0	B	_memmoveTEXT memmove(SB), $0_memmove:	MOVW	R(TS), to+0(FP)		/* need to save for return value */	MOVW	from+4(FP), R(FROM)	MOVW	n+8(FP), R(N) 	ADD	R(N), R(TS), R(TE)	/* to end pointer */ 	CMP	R(FROM), R(TS)	BLS	_forward _back:	ADD	R(N), R(FROM)		/* from end pointer */	CMP	$4, R(N)		/* need at least 4 bytes to copy */	BLT	_b1tail _b4align:				/* align destination on 4 */	AND.S	$3, R(TE), R(TMP)	BEQ	_b4aligned 	MOVBU.W	-1(R(FROM)), R(TMP)	/* pre-indexed */	MOVBU.W	R(TMP), -1(R(TE))	/* pre-indexed */	B	_b4align _b4aligned:				/* is source now aligned? */	AND.S	$3, R(FROM), R(TMP)	BNE	_bunaligned 	ADD	$31, R(TS), R(TMP)	/* do 32-byte chunks if possible */_b32loop:	CMP	R(TMP), R(TE)	BLS	_b4tail 	MOVM.DB.W (R(FROM)), [R4-R7]	MOVM.DB.W [R4-R7], (R(TE))	MOVM.DB.W (R(FROM)), [R4-R7]	MOVM.DB.W [R4-R7], (R(TE))	B	_b32loop _b4tail:				/* do remaining words if possible */	ADD	$3, R(TS), R(TMP)_b4loop:	CMP	R(TMP), R(TE)	BLS	_b1tail 	MOVW.W	-4(R(FROM)), R(TMP1)	/* pre-indexed */	MOVW.W	R(TMP1), -4(R(TE))	/* pre-indexed */	B	_b4loop _b1tail:				/* remaining bytes */	CMP	R(TE), R(TS)	BEQ	_return 	MOVBU.W	-1(R(FROM)), R(TMP)	/* pre-indexed */	MOVBU.W	R(TMP), -1(R(TE))	/* pre-indexed */	B	_b1tail _forward:	CMP	$4, R(N)		/* need at least 4 bytes to copy */	BLT	_f1tail _f4align:				/* align destination on 4 */	AND.S	$3, R(TS), R(TMP)	BEQ	_f4aligned 	MOVBU.P	1(R(FROM)), R(TMP)	/* implicit write back */	MOVBU.P	R(TMP), 1(R(TS))	/* implicit write back */	B	_f4align _f4aligned:				/* is source now aligned? */	AND.S	$3, R(FROM), R(TMP)	BNE	_funaligned 	SUB	$31, R(TE), R(TMP)	/* do 32-byte chunks if possible */_f32loop:	CMP	R(TMP), R(TS)	BHS	_f4tail 	MOVM.IA.W (R(FROM)), [R4-R7] 	MOVM.IA.W [R4-R7], (R(TS))	MOVM.IA.W (R(FROM)), [R4-R7] 	MOVM.IA.W [R4-R7], (R(TS))	B	_f32loop _f4tail:	SUB	$3, R(TE), R(TMP)	/* do remaining words if possible */_f4loop:	CMP	R(TMP), R(TS)	BHS	_f1tail 	MOVW.P	4(R(FROM)), R(TMP1)	/* implicit write back */	MOVW.P	R4, 4(R(TS))		/* implicit write back */	B	_f4loop _f1tail:	CMP	R(TS), R(TE)	BEQ	_return 	MOVBU.P	1(R(FROM)), R(TMP)	/* implicit write back */	MOVBU.P	R(TMP), 1(R(TS))	/* implicit write back */	B	_f1tail _return:	MOVW	to+0(FP), R0	RET RSHIFT = 4LSHIFT = 5OFFSET = 11 BR0 = 6BW0 = 7BR1 = 7BW1 = 8 _bunaligned:	CMP	$2, R(TMP)		/* is R(TMP) < 2 ? */ 	MOVW.LT	$8, R(RSHIFT)		/* (R(n)<<24)|(R(n-1)>>8) */	MOVW.LT	$24, R(LSHIFT)	MOVW.LT	$1, R(OFFSET) 	MOVW.EQ	$16, R(RSHIFT)		/* (R(n)<<16)|(R(n-1)>>16) */	MOVW.EQ	$16, R(LSHIFT)	MOVW.EQ	$2, R(OFFSET) 	MOVW.GT	$24, R(RSHIFT)		/* (R(n)<<8)|(R(n-1)>>24) */	MOVW.GT	$8, R(LSHIFT)	MOVW.GT	$3, R(OFFSET) 	ADD	$8, R(TS), R(TMP)	/* do 8-byte chunks if possible */	CMP	R(TMP), R(TE)	BLS	_b1tail 	BIC	$3, R(FROM)		/* align source */	MOVW	(R(FROM)), R(BR0)	/* prime first block register */ _bu8loop:	CMP	R(TMP), R(TE)	BLS	_bu1tail 	MOVW	R(BR0)<<R(LSHIFT), R(BW1)	MOVM.DB.W (R(FROM)), [R(BR0)-R(BR1)]	ORR	R(BR1)>>R(RSHIFT), R(BW1) 	MOVW	R(BR1)<<R(LSHIFT), R(BW0)	ORR	R(BR0)>>R(RSHIFT), R(BW0) 	MOVM.DB.W [R(BW0)-R(BW1)], (R(TE))	B	_bu8loop _bu1tail:	ADD	R(OFFSET), R(FROM)	B	_b1tail RSHIFT = 4LSHIFT = 5OFFSET = 11 FW0 = 6FR0 = 7FW1 = 7FR1 = 8 _funaligned:	CMP	$2, R(TMP) 	MOVW.LT	$8, R(RSHIFT)		/* (R(n+1)<<24)|(R(n)>>8) */	MOVW.LT	$24, R(LSHIFT)	MOVW.LT	$3, R(OFFSET) 	MOVW.EQ	$16, R(RSHIFT)		/* (R(n+1)<<16)|(R(n)>>16) */	MOVW.EQ	$16, R(LSHIFT)	MOVW.EQ	$2, R(OFFSET) 	MOVW.GT	$24, R(RSHIFT)		/* (R(n+1)<<8)|(R(n)>>24) */	MOVW.GT	$8, R(LSHIFT)	MOVW.GT	$1, R(OFFSET) 	SUB	$8, R(TE), R(TMP)	/* do 8-byte chunks if possible */	CMP	R(TMP), R(TS)	BHS	_f1tail 	BIC	$3, R(FROM)		/* align source */	MOVW.P	4(R(FROM)), R(FR1)	/* prime last block register, implicit write back */ _fu8loop:	CMP	R(TMP), R(TS)	BHS	_fu1tail 	MOVW	R(FR1)>>R(RSHIFT), R(FW0)	MOVM.IA.W (R(FROM)), [R(FR0)-R(FR1)]	ORR	R(FR0)<<R(LSHIFT), R(FW0) 	MOVW	R(FR0)>>R(RSHIFT), R(FW1)	ORR	R(FR1)<<R(LSHIFT), R(FW1) 	MOVM.IA.W [R(FW0)-R(FW1)], (R(TS))	B	_fu8loop _fu1tail:	SUB	R(OFFSET), R(FROM)	B	_f1tail