mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 06:10:10 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
|
|
Copyright (C) 2000-2019 Free Software Foundation, Inc.
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
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 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>
|
|
|
|
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/x86 ELF
|
|
dynamic linker. Sigh. */
|
|
weak_alias (__curbrk, ___brk_addr)
|
|
|
|
int
|
|
__brk (void *addr)
|
|
{
|
|
void *newbrk;
|
|
|
|
{
|
|
register void *__addr __asm__("2") = addr;
|
|
|
|
__asm__ ("svc %b1\n\t" /* call sys_brk */
|
|
: "=d" (__addr)
|
|
: "I" (SYS_ify(brk)), "r" (__addr)
|
|
: "cc", "memory" );
|
|
newbrk = __addr;
|
|
}
|
|
__curbrk = newbrk;
|
|
|
|
if (newbrk < addr)
|
|
{
|
|
__set_errno (ENOMEM);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
weak_alias (__brk, brk)
|