/*std.memblit	: (dst : byte#, src : byte#, len : std.size -> void)std.memfill	: (dst : byte#, val : byte, len : std.size -> void)*/TEXT std$memblit+0(SB),$0	CMPQ	SI,DI	JZ	.done	JG	.fwdcpy	MOVQ	SI,AX	SUBQ	DI,AX	CMPQ	CX,AX	JG	.revcpy.fwdcpy:	MOVQ	DX,CX	SHRQ	$3,CX	REP; MOVSQ	MOVQ	DX,CX	ANDQ	$7,CX	REP; MOVSB	JMP	.done.revcpy:	STD	MOVQ	DX,CX	LEAQ	-1(DX)(SI*1),SI	LEAQ	-1(DX)(DI*1),DI	REP; MOVSB	CLD.done:	RET TEXT std$memfill+0(SB),$0	/* generate 8 bytes of fill */	MOVBQZX	SI,BX	MOVQ	$0x101010101010101,AX	IMULQ	BX,AX 	/* and fill */	MOVQ	DX,CX	SHRQ	$3,CX	REP; STOSQ	MOVQ	DX,CX	ANDQ	$7,CX	REP; STOSB 	RET TEXT std$memeq+0(SB),$0	MOVQ	DX,R8	ANDQ	$~0x7,R8	JZ	.dotail.nextquad:	MOVQ	(DI),R9	MOVQ	(SI),R10	XORQ	R10,R9	JNZ .unequal	ADDQ	$8,SI	ADDQ	$8,DI	SUBQ	$8,R8	JNZ .nextquad.dotail:	ANDQ	$0x7,DX	TESTQ	DX,DX	JZ .equal.nextbyte:	MOVBLZX	(DI),R9	MOVBLZX	(SI),R10	XORL	R10,R9	JNZ .unequal	ADDQ	$1,SI	ADDQ	$1,DI	SUBQ	$1,DX	JNZ .nextbyte.equal:	MOVQ	$1,AX	RET.unequal:	MOVQ	$0,AX	RET