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/* $OpenBSD: brk.S,v 1.7 2015/08/26 01:54:09 guenther Exp $ */
/* $NetBSD: brk.S,v 1.4 1996/10/17 03:08:15 cgd 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 "SYS.h"
.globl _end
IMPORT(__curbrk, 8)
.data
__minbrk:
.quad _end
WEAK_ALIAS(brk, _brk)
.text
LEAF(_brk, 1)
br pv, L1 /* XXX profiling */
L1: LDGP(pv)
ldq v0, __minbrk
cmpult a0, v0, t0
cmovne t0, v0, a0
CALLSYS_ERROR(break)
stq a0, __curbrk
mov zero, v0
RET
END(_brk)
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