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/* $OpenBSD: sbrk.S,v 1.4 2011/04/21 14:12:20 jsing 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
ldd RT%__curbrk(%r1), %arg3
ldd 0(%arg3), %arg2
#else
ldil L%__curbrk, %arg3
ldd R%__curbrk(%arg3), %arg2
#endif
add %arg0, %arg2, %arg0
std %arg0, HPPA_FRAME_ARG(0)(%sp)
SYSCALL(break)
#ifdef PIC
addil LT%__curbrk, %r19
ldd RT%__curbrk(%r1), %arg3
#else
ldil L%__curbrk, %arg3
ldo R%__curbrk(%arg3), %arg3
#endif
ldd HPPA_FRAME_ARG(0)(%sp), %arg0
ldd 0(%arg3), %ret0
bv %r0(%rp)
std %arg0, 0(%arg3)
SYSEXIT(sbrk)
.end
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