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Commit | Line | Data |
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9298f9e1 | 1 | /* brk system call for Linux/m68k. |
04277e02 | 2 | Copyright (C) 1996-2019 Free Software Foundation, Inc. |
f2a7bb20 | 3 | This file is part of the GNU C Library. |
9298f9e1 | 4 | |
f2a7bb20 | 5 | The GNU C Library is free software; you can redistribute it and/or |
3214b89b AJ |
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. | |
9298f9e1 | 9 | |
f2a7bb20 UD |
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 | |
3214b89b | 13 | Lesser General Public License for more details. |
9298f9e1 | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
9298f9e1 RM |
18 | |
19 | #include <errno.h> | |
20 | #include <unistd.h> | |
21 | #include <sysdep.h> | |
22 | ||
f2a7bb20 UD |
23 | void *__curbrk = 0; |
24 | ||
25 | /* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt | |
26 | to work around different old braindamage in the old Linux/x86 ELF | |
27 | dynamic linker. Sigh. */ | |
28 | weak_alias (__curbrk, ___brk_addr) | |
9298f9e1 RM |
29 | |
30 | int | |
31 | __brk (void *addr) | |
32 | { | |
33 | void *newbrk; | |
34 | ||
51c050b0 UD |
35 | INTERNAL_SYSCALL_DECL (err); |
36 | newbrk = (void *) INTERNAL_SYSCALL (brk, err, 1, addr); | |
9298f9e1 RM |
37 | __curbrk = newbrk; |
38 | ||
39 | if (newbrk < addr) | |
40 | { | |
1120c0ed | 41 | __set_errno (ENOMEM); |
9298f9e1 RM |
42 | return -1; |
43 | } | |
44 | ||
45 | return 0; | |
46 | } | |
47 | weak_alias (__brk, brk) |