glibc/sysdeps/unix/sysv/linux/generic/brk.c
Chris Metcalf 4372980f58 Move tilegx, tilepro, and linux-generic from ports to libc.
I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure.  Beyond the README
update, the move was just

    git mv ports/sysdeps/tile sysdeps/tile
    git mv ports/sysdeps/unix/sysv/linux/tile \
      sysdeps/unix/sysv/linux/tile
    git mv ports/sysdeps/unix/sysv/linux/generic \
      sysdeps/unix/sysv/linux/generic

I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d7 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.
2014-02-10 11:04:39 -05:00

46 lines
1.4 KiB
C

/* Copyright (C) 2011-2014 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, see
<http://www.gnu.org/licenses/>. */
#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)