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- /* Copyright (C) 1992 Free Software Foundation, Inc.
- Contributed by Brendan Kehoe (brendan@zen.org).
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <sysdep.h>
-
- #ifndef SYS_brk
- #define SYS_brk 17
- #endif
-
- #ifndef HAVE_GNU_LD
- #define __end end
- #endif
-
- .data
- .sdata
- ENTRY(__curbrk)
- .word __end
-
- .text
- .set noreorder
- .set noat
-
- ENTRY(__brk)
- /* Minimum is one page. */
- lui v0, 4096
- lw v0, __end
- nop
-
- /* If they ask for less than a page, givvem the whole
- thing anyway. */
- sltu AT, a0, v0
- beq AT, zero, down1
- nop
- move a0, v0
- down1:
- li v0, SYS_brk
- syscall
- bne a3, zero, error
-
- /* Update __curbrk and exit cleanly. */
- lui AT, 4096
- sw a0, __curbrk
- j ra
- move v0, zero
-
- /* What a horrible way to die. */
- error: j syscall_error
- nop
- nop
- nop
-