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brk implementation for Linux/CRIS.

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This commit is contained in:
Ulrich Drepper 2001-04-09 04:32:28 +00:00
parent e1eebead7a
commit 223bf22682
1 changed files with 44 additions and 0 deletions
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44
sysdeps/unix/sysv/linux/cris/brk.c Normal file
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/* brk system call for Linux/CRIS.
Copyright (C) 1995, 1996, 2001 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <unistd.h>
#include <sysdep.h>
/* This must be initialized data because commons can't have aliases. */
void *__curbrk = 0;
int
__brk (void *addr)
{
unsigned char *newbrk;
newbrk = (unsigned char *) INLINE_SYSCALL (brk, 1, addr);
__curbrk = newbrk;
if (newbrk < (unsigned char *) addr)
{
__set_errno (ENOMEM);
return -1;
}
return 0;
}
weak_alias (__brk, brk)