/usr/web/sources/plan9/sys/src/ape/lib/ap/386/strlen.s

Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/ape/lib/ap/386/strlen.s


	TEXT	strlen(SB),$0

	MOVL	$0, AX
	MOVL	$-1, CX
	CLD
/*
 * look for end of string
 */

	MOVL	p+0(FP), DI
	REPN;	SCASB

	MOVL	DI, AX
	SUBL	p+0(FP), AX
	SUBL	$1, AX
	RET

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