mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
|
/* Copyright (C) 2011 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 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
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; 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;
|
||
|
|
|
||
|
|
/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
|
||
|
|
to work around different old braindamage in the old Linux ELF dynamic
|
||
|
|
linker. */
|
||
|
|
weak_alias (__curbrk, ___brk_addr)
|
||
|
|
|
||
|
|
int
|
||
|
|
__brk (void *addr)
|
||
|
|
{
|
||
|
|
INTERNAL_SYSCALL_DECL (err);
|
||
|
|
|
||
|
|
__curbrk = (void *) INTERNAL_SYSCALL (brk, err, 1, addr);
|
||
|
|
if (__curbrk < addr)
|
||
|
|
{
|
||
|
|
__set_errno (ENOMEM);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
weak_alias (__brk, brk)
|