xref: /titanic_51/usr/src/lib/libc/common/sys/brk.s (revision 5a7763bf3e9db4cfe6cb523b096cb74af71e3793)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29	.file	"%M%"
30
31#include "SYS.h"
32
33/*
34 * _brk_unlocked() simply traps into the kernel to set the brk.  It
35 * returns 0 if the break was successfully set, or -1 otherwise.
36 * It doesn't enforce any alignment and it doesn't perform any locking.
37 * _brk_unlocked() is only called from brk() and _sbrk_unlocked().
38 */
39
40	ENTRY_NP(_brk_unlocked)
41	SYSTRAP_RVAL1(brk)
42	SYSCERROR
43	RETC
44	SET_SIZE(_brk_unlocked)
45