mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 19:30:10 +00:00
683158e0c4
(_hurd_set_brk): Try to allocate more space when we run out. * sysdeps/generic/sbrk.c: If __curbrk is zero, call __brk with zero and examine it again. * sysdeps/unix/sysv/linux/i386/brk.c: New file. * sysdeps/unix/sysv/linux/i386/brk.S: File removed. * sysdeps/unix/sysv/linux/i386/sbrk.S: File removed. * sysdeps/unix/sysv/linux/dl-sysdep.c: New file.
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* Dynamic linker system dependencies for Linux.
|
|
Copyright (C) 1995 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. */
|
|
|
|
/* Linux needs some special initialization, but otherwise uses
|
|
the generic dynamic linker system interface code. */
|
|
|
|
#include <unistd.h>
|
|
|
|
#define DL_SYSDEP_INIT frob_brk ()
|
|
|
|
static inline void
|
|
frob_brk (void)
|
|
{
|
|
extern void _end;
|
|
__brk (0); /* Initialize the break. */
|
|
if (__sbrk (0) == &_end)
|
|
{
|
|
/* The dynamic linker was run as a program, and so the initial break
|
|
starts just after our bss, at &_end. The malloc in dl-minimal.c
|
|
will consume the rest of this page, so tell the kernel to move the
|
|
break up that far. When the user program examines its break, it
|
|
will see this new value and not clobber our data. */
|
|
size_t pg = __getpagesize ();
|
|
__sbrk (pg - ((&_end - (void *) 0) & pg));
|
|
}
|
|
}
|
|
|
|
#include <sysdeps/generic/dl-sysdep.c>
|