2012-09-17 11:09:12 +02:00
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/* $NetBSD: brk.S,v 1.5 2012/03/14 14:18:10 skrll Exp $ */
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2011-02-14 20:36:03 +01:00
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/* $OpenBSD: brk.S,v 1.7 2001/06/04 23:14:04 mickey Exp $ */
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/*
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* Copyright (c) 1999 Michael Shalayeff
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "SYS.h"
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#if defined(LIBC_SCCS) && !defined(lint)
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2012-09-17 11:09:12 +02:00
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RCSID("$NetBSD: brk.S,v 1.5 2012/03/14 14:18:10 skrll Exp $")
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2011-02-14 20:36:03 +01:00
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#endif /* LIBC_SCCS and not lint */
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.import curbrk, data
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2012-09-17 11:09:12 +02:00
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.global _end
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2011-02-14 20:36:03 +01:00
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#ifdef WEAK_ALIAS
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WEAK_ALIAS(brk, _brk)
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#endif
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.data
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.export __minbrk, data
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__minbrk:
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2012-09-17 11:09:12 +02:00
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.long _end
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2011-02-14 20:36:03 +01:00
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ENTRY(_brk,0)
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#ifdef PIC
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addil LT%__minbrk, %r19
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ldw RT%__minbrk(%r1), %r1
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ldw 0(%r1), %t2
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#else /* !PIC */
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ldil L%__minbrk, %t1
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ldw R%__minbrk(%t1), %t2
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#endif /* !PIC */
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sub,<< %t2, %arg0, %r0
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copy %t2, %arg0
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stw %arg0, HPPA_FRAME_ARG(0)(%sp)
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SYSCALL(break)
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ldw HPPA_FRAME_ARG(0)(%sp), %arg0
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#ifdef PIC
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addil LT%curbrk, %r19
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ldw RT%curbrk(%r1), %r1
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bv %r0(%rp)
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stw %arg0, 0(%r1)
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#else /* !PIC */
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ldil L%curbrk, %t1
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bv %r0(%rp)
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stw %arg0, R%curbrk(%t1)
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#endif /* !PIC */
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EXIT(brk)
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.end
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