xref: /openbsd-src/lib/libc/arch/i386/stdlib/abs.S (revision ea6088e7d368d53c49ebfdf4520275cec2f78f5b)
1df930be7Sderaadt/*-
2df930be7Sderaadt * Copyright (c) 1990 The Regents of the University of California.
3df930be7Sderaadt * All rights reserved.
4df930be7Sderaadt *
5df930be7Sderaadt * This code is derived from software contributed to Berkeley by
6df930be7Sderaadt * William Jolitz.
7df930be7Sderaadt *
8df930be7Sderaadt * Redistribution and use in source and binary forms, with or without
9df930be7Sderaadt * modification, are permitted provided that the following conditions
10df930be7Sderaadt * are met:
11df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright
12df930be7Sderaadt *    notice, this list of conditions and the following disclaimer.
13df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright
14df930be7Sderaadt *    notice, this list of conditions and the following disclaimer in the
15df930be7Sderaadt *    documentation and/or other materials provided with the distribution.
166580fee3Smillert * 3. Neither the name of the University nor the names of its contributors
17df930be7Sderaadt *    may be used to endorse or promote products derived from this software
18df930be7Sderaadt *    without specific prior written permission.
19df930be7Sderaadt *
20df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23df930be7Sderaadt * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30df930be7Sderaadt * SUCH DAMAGE.
31df930be7Sderaadt */
32df930be7Sderaadt
33*ea6088e7Sguenther#include "DEFS.h"
34df930be7Sderaadt
35df930be7SderaadtENTRY(abs)
36df930be7Sderaadt	movl	4(%esp),%eax
37df930be7Sderaadt	testl	%eax,%eax
38df930be7Sderaadt	jns	1f
39df930be7Sderaadt	negl	%eax
40df930be7Sderaadt1:	ret
4128f5aba7SguentherEND_STRONG(abs)
42