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- /* Copyright (C) 1993 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- 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 C_SYMBOL_NAME
- #define C_SYMBOL_NAME(name) _##name
- #endif
-
- .data
- .global C_SYMBOL_NAME(__curbrk)
- C_LABEL(__curbrk)
- #ifdef HAVE_GNU_LD
- .long C_SYMBOL_NAME(_end)
- #else
- .long C_SYMBOL_NAME(end)
- #endif
-
- .text
- ENTRY (__brk)
- add %o0, 7, %o0
- andn %o0, 7, %o0
- mov SYS_brk, %g1
- mov %o0, %o1 /* Save rounded value. */
- ta %g0
- bcs error
- sethi %hi(C_SYMBOL_NAME(__curbrk)), %g1
- st %o1, [%g1 + %lo(C_SYMBOL_NAME(__curbrk))]
- ret
- error: sethi %hi(C_SYMBOL_NAME(errno)), %g1
- st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
- sub %g0, 1, %o0
- retl
- nop /* Fill the delay slot. */
-