1/*-
2 * Copyright (c) 2003 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <machine/asm.h>
| 1/*-
2 * Copyright (c) 2003 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <machine/asm.h>
|
29
30/*
31 * size_t
32 * wcslen(const wchar_t *s) --
33 * Find the length of a wide character string.
34 */
35ENTRY(wcslen)
36 movl 4(%esp),%ecx /* String */
37 pushl %ebx
38 xorl %ebx,%ebx
39 xorl %eax,%eax
40.p2align 4,0x90
41L1: cmpl %ebx,(%ecx)
42 jz found0
43 cmpl %ebx,4(%ecx)
44 jz found1
45 cmpl %ebx,8(%ecx)
46 jz found2
47 cmpl %ebx,12(%ecx)
48 jz found3
49 cmpl %ebx,16(%ecx)
50 jz found4
51 cmpl %ebx,20(%ecx)
52 jz found5
53 cmpl %ebx,24(%ecx)
54 jz found6
55 cmpl %ebx,28(%ecx)
56 jz found7
57 leal 32(%ecx),%ecx
58 addl $8,%eax
59 jmp L1
60found7: incl %eax
61found6: incl %eax
62found5: incl %eax
63found4: incl %eax
64found3: incl %eax
65found2: incl %eax
66found1: incl %eax
67found0: popl %ebx
68 ret
69END(wcslen)
| 29
30/*
31 * size_t
32 * wcslen(const wchar_t *s) --
33 * Find the length of a wide character string.
34 */
35ENTRY(wcslen)
36 movl 4(%esp),%ecx /* String */
37 pushl %ebx
38 xorl %ebx,%ebx
39 xorl %eax,%eax
40.p2align 4,0x90
41L1: cmpl %ebx,(%ecx)
42 jz found0
43 cmpl %ebx,4(%ecx)
44 jz found1
45 cmpl %ebx,8(%ecx)
46 jz found2
47 cmpl %ebx,12(%ecx)
48 jz found3
49 cmpl %ebx,16(%ecx)
50 jz found4
51 cmpl %ebx,20(%ecx)
52 jz found5
53 cmpl %ebx,24(%ecx)
54 jz found6
55 cmpl %ebx,28(%ecx)
56 jz found7
57 leal 32(%ecx),%ecx
58 addl $8,%eax
59 jmp L1
60found7: incl %eax
61found6: incl %eax
62found5: incl %eax
63found4: incl %eax
64found3: incl %eax
65found2: incl %eax
66found1: incl %eax
67found0: popl %ebx
68 ret
69END(wcslen)
|