55 lines
1.4 KiB
ArmAsm
55 lines
1.4 KiB
ArmAsm
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/* $NetBSD: brk.S,v 1.9 2001/05/07 17:19:17 kleink Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include "SYS.h"
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.globl _end
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IMPORT(__curbrk, 8)
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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)
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.quad _end
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.text
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LEAF(_brk, 1)
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br pv, L1 /* XXX profiling */
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L1: LDGP(pv)
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ldq v0, __minbrk
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cmpult a0, v0, t0
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cmovne t0, v0, a0
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CALLSYS_ERROR(break)
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stq a0, __curbrk
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mov zero, v0
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RET
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END(_brk)
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