1995-01-21 22:40:39 +08:00
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/* Copyright (C) 1992, 1995 Free Software Foundation, Inc.
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1993-08-27 07:30:59 +08:00
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Contributed by Brendan Kehoe (brendan@zen.org).
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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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.sdata
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ENTRY(__curbrk)
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.word __end
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.text
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.set noreorder
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.set noat
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ENTRY(__brk)
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/* Minimum is one page. */
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lui v0, 4096
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lw v0, __end
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nop
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/* If they ask for less than a page, givvem the whole
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thing anyway. */
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sltu AT, a0, v0
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beq AT, zero, down1
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nop
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move a0, v0
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down1:
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li v0, SYS_brk
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syscall
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bne a3, zero, error
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/* Update __curbrk and exit cleanly. */
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lui AT, 4096
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sw a0, __curbrk
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j ra
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move v0, zero
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/* What a horrible way to die. */
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error: j syscall_error
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nop
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nop
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nop
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1995-01-21 22:40:39 +08:00
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weak_alias (__brk, brk)
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