32 lines
476 B
ArmAsm
32 lines
476 B
ArmAsm
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
#if defined(LIBC_SCCS)
|
|
RCSID("$NetBSD: index.S,v 1.1 1998/02/22 07:20:52 mycroft Exp $")
|
|
#endif
|
|
|
|
#ifdef STRCHR
|
|
ENTRY(strchr)
|
|
#else
|
|
ENTRY(index)
|
|
#endif
|
|
pushl %ebx
|
|
movl 8(%esp),%eax
|
|
movb 12(%esp),%cl
|
|
.align 2,0x90
|
|
L1:
|
|
movb (%eax),%bl
|
|
cmpb %bl,%cl /* found char??? */
|
|
je L2
|
|
incl %eax
|
|
testb %bl,%bl /* null terminator??? */
|
|
jnz L1
|
|
xorl %eax,%eax
|
|
L2:
|
|
popl %ebx
|
|
ret
|