NetBSD/sys/lib/libkern/arch/i386/rindex.S

33 lines
504 B
ArmAsm

/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
*/
#include <machine/asm.h>
#if defined(LIBC_SCCS)
RCSID("$NetBSD: rindex.S,v 1.2 1999/08/23 09:07:35 kleink Exp $")
#endif
#ifdef STRRCHR
ENTRY(strrchr)
#else
ENTRY(rindex)
#endif
pushl %ebx
movl 8(%esp),%edx
movb 12(%esp),%cl
xorl %eax,%eax /* init pointer to null */
_ALIGN_TEXT,0x90
L1:
movb (%edx),%bl
cmpb %bl,%cl
jne L2
movl %edx,%eax
L2:
incl %edx
testb %bl,%bl /* null terminator??? */
jnz L1
popl %ebx
ret