1/*
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * from: Header: brk.s,v 1.3 92/06/25 12:56:05 mccanne Exp
34 */
35
36#if defined(SYSLIBC_SCCS) && !defined(lint)
37	.asciz "@(#)sbrk.s	8.1 (Berkeley) 6/4/93"
38#if 0
39	RCSID("$NetBSD: sbrk.S,v 1.7 2000/07/25 15:14:46 mycroft Exp $")
40#endif
41#endif /* SYSLIBC_SCCS and not lint */
42#include <machine/asm.h>
43__FBSDID("$FreeBSD$");
44
45#include "SYS.h"
46
47	.data
48	.globl	HIDENAME(curbrk)
49	.globl	HIDENAME(minbrk)
50	.type	HIDENAME(curbrk),@object
51	.type	HIDENAME(minbrk),@object
52	.align	8
53HIDENAME(curbrk):
54	.xword	CNAME(_end)
55HIDENAME(minbrk):
56	.xword	CNAME(_end)
57
58_SYSENTRY(sbrk)
59	PIC_PROLOGUE(%o3, %o2)
60	SET(HIDENAME(curbrk), %o2, %o3)
61	ldx	[%o3], %o4
62	add	%o4, %o0, %o5
63	mov	%o5, %o0
64	mov	SYS_break, %g1
65	ta	%xcc, ST_SYSCALL
66	bcc,a,pt %xcc, 1f
67	 mov	%o4, %o0
68	ERROR()
691:	retl
70	 stx	%o5, [%o3]
71_SYSEND(sbrk)
72