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/* $OpenBSD: brk.S,v 1.2 2011/07/05 03:26:18 pirofti Exp $ */
/* $NetBSD: brk.S,v 1.2 2006/09/23 17:39:34 cherry Exp $ */
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <machine/asm.h>
/* $FreeBSD: brk.S,v 1.4 2003/05/16 21:26:39 marcel Exp $ */
#include "SYS.h"
.globl _end
IMPORT(__curbrk, 8)
.data
EXPORT(__minbrk)
.quad _end
.text
ENTRY(_brk, 1)
add r14=@ltoff(__minbrk),gp ;;
ld8 r14=[r14] ;;
ld8 r14=[r14] ;;
cmp.ltu p6,p0=r32,r14 ;;
(p6) mov r32=r14 ;;
st8 [sp]=r32
CALLSYS_ERROR(break)
ld8 r15=[sp]
add r14=@ltoff(__curbrk),gp ;;
ld8 r14=[r14] ;;
st8 [r14]=r15
mov ret0=0
br.ret.sptk.few rp
END(_brk)
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