1 /* Change data segment size. Linux/Alpha.
2 Copyright (C) 2020-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <errno.h>
20 #include <unistd.h>
21 #include <sysdep.h>
22
23 void *__curbrk = 0;
24
25 int
__brk(void * addr)26 __brk (void *addr)
27 {
28 /* Alpha brk returns -ENOMEM in case of failure. */
29 __curbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
30 if ((unsigned long) __curbrk == -ENOMEM)
31 {
32 __set_errno (ENOMEM);
33 return -1;
34 }
35
36 return 0;
37 }
38 weak_alias (__brk, brk)
39