/* $NetBSD: brk.S,v 1.9 2001/05/07 17:19:17 kleink 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  [email protected]
*  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)

#ifdef WEAK_ALIAS
WEAK_ALIAS(brk, _brk)
#endif

       .data
EXPORT(__minbrk)
       .quad   _end

       .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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