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48 lines
1.2 KiB
ArmAsm
48 lines
1.2 KiB
ArmAsm
/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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#ifndef SYS_brk
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#define SYS_brk 17
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#endif
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#ifndef HAVE_GNU_LD
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#define __end _end
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#endif
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.data
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.globl ___curbrk
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___curbrk:
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.long __end
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.text
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ENTRY (__brk)
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movel POUND(__end), d0
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cmpl sp@(4), d0
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ble 0f
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movel d0, sp@(4)
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0: movel POUND(SYS_brk), d0
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trap POUND(0)
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bcs 1f
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movel sp@(4), ___curbrk
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clrl d0
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rts
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1:
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jmp syscall_error
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