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/* $OpenBSD: sbrk.S,v 1.13 2006/01/05 22:13:55 kettenis Exp $ */
/*
* Copyright (c) 1999 Michael Shalayeff
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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.
*/
#include "SYS.h"
.import end, data
.data
.export __curbrk, data
__curbrk
.long end
SYSENTRY(sbrk)
#ifdef PIC
addil LT%__curbrk, r19
ldw RT%__curbrk(r1), t1
ldw 0(t1), t2
#else
ldil L%__curbrk, t1
ldw R%__curbrk(t1), t2
#endif
add arg0, t2, arg0
stw arg0, HPPA_FRAME_ARG(0)(sp)
SYSCALL(break)
#ifdef PIC
addil LT%__curbrk, r19
ldw RT%__curbrk(r1), t1
#else
ldil L%__curbrk, t1
ldo R%__curbrk(t1), t1
#endif
ldw HPPA_FRAME_ARG(0)(sp), arg0
ldw 0(t1), ret0
bv r0(rp)
stw arg0, 0(t1)
SYSEXIT(sbrk)
.end
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