shithub: riscv

ref: 3b7e03a30ed29ee0666c00568bf67b8179c28d12
dir: /sys/src/ape/lib/ap/68020/memchr.s/

View raw version 
	TEXT	memchr(SB),$0
	MOVL	n+8(FP),R0
	BEQ	ret
	MOVL	s1+0(FP),A1
	MOVL	c+4(FP),R1

l1:	CMPB	R1,(A1)+
	BEQ	eq
	SUBL	$1,R0
	BNE	l1
	RTS

eq:	MOVL	A1,R0
	SUBL	$1,R0
ret:	RTS