blob: 6ba7c52a11f0ae6f89248c6052c9a73beb441c9e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
* Adapted for NetBSD/x86_64 by Frank van der Linden <fvdl@wasabisystems.com>
*/
#include <machine/asm.h>
#if defined(LIBC_SCCS)
RCSID("$NetBSD: rindex.S,v 1.1 2001/06/19 00:22:47 fvdl Exp $")
#endif
#ifdef STRRCHR
ENTRY(strrchr)
#else
ENTRY(rindex)
#endif
movb %sil,%cl
xorq %rax,%rax /* init pointer to null */
L1:
movb (%rdi),%dl
cmpb %dl,%cl
jne L2
movq %rdi,%rax
L2:
incq %rdi
testb %dl,%dl /* null terminator??? */
jnz L1
ret
|