66 lines
2.4 KiB
ArmAsm
66 lines
2.4 KiB
ArmAsm
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This software was developed by the Computer Systems Engineering group
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
* contributed to Berkeley.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: Header: brk.s,v 1.3 92/06/25 12:56:05 mccanne Exp
|
|
*/
|
|
|
|
#if defined(SYSLIBC_SCCS) && !defined(lint)
|
|
.asciz "@(#)brk.s 8.1 (Berkeley) 6/4/93"
|
|
#if 0
|
|
RCSID("$NetBSD: brk.S,v 1.9 2000/07/25 20:15:40 mycroft Exp $")
|
|
#endif
|
|
#endif /* SYSLIBC_SCCS and not lint */
|
|
#include <machine/asm.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "SYS.h"
|
|
|
|
.globl HIDENAME(curbrk)
|
|
.globl HIDENAME(minbrk)
|
|
|
|
_SYSENTRY(brk)
|
|
PIC_PROLOGUE(%o3, %o2)
|
|
SET(HIDENAME(minbrk), %o2, %o3)
|
|
ldx [%o3], %o4
|
|
cmp %o4, %o0
|
|
movg %xcc, %o4, %o0
|
|
mov %o0, %o4
|
|
mov SYS_break, %g1
|
|
ta %xcc, ST_SYSCALL
|
|
bcc,a,pt %xcc, 1f
|
|
nop
|
|
ERROR()
|
|
1: SET(HIDENAME(curbrk), %o2, %o3)
|
|
retl
|
|
stx %o4, [%o3]
|
|
_SYSEND(brk)
|