projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 7289f2bb | 1 | /* brk system call for Linux/MIPS. |
| 688903eb | 2 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| 7289f2bb AJ |
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 | |
| 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. | |
| 7289f2bb AJ |
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 | |
| 3214b89b | 13 | Lesser General Public License for more details. |
| 7289f2bb | 14 | |
| 3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 7289f2bb AJ |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <unistd.h> | |
| 21 | #include <sysdep.h> | |
| 22 | ||
| 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) | |
| 29 | ||
| 30 | int | |
| 31 | __brk (void *addr) | |
| 32 | { | |
| 43301bd3 | 33 | INTERNAL_SYSCALL_DECL (err); |
| 7289f2bb AJ |
34 | void *newbrk; |
| 35 | ||
| 43301bd3 | 36 | newbrk = (void *) INTERNAL_SYSCALL (brk, err, 1, addr); |
| 7289f2bb AJ |
37 | __curbrk = newbrk; |
| 38 | ||
| 39 | if (newbrk < addr) | |
| 40 | { | |
| 41 | __set_errno (ENOMEM); | |
| 42 | return -1; | |
| 43 | } | |
| 44 | ||
| 45 | return 0; | |
| 46 | } | |
| 47 | weak_alias (__brk, brk) |