27 lines
416 B
ArmAsm
27 lines
416 B
ArmAsm
/* $OpenBSD: index.S,v 1.4 2005/08/07 11:30:38 espie Exp $ */
|
|
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
#ifdef STRCHR
|
|
ENTRY(strchr)
|
|
#else
|
|
ENTRY(index)
|
|
#endif
|
|
movl 4(%esp),%eax
|
|
movb 8(%esp),%cl
|
|
.align 2,0x90
|
|
L1:
|
|
movb (%eax),%dl
|
|
cmpb %dl,%cl /* found char??? */
|
|
je L2
|
|
incl %eax
|
|
testb %dl,%dl /* null terminator??? */
|
|
jnz L1
|
|
xorl %eax,%eax
|
|
L2:
|
|
ret
|