projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 688903eb | 1 | /* Copyright (C) 2011-2018 Free Software Foundation, Inc. |
| a63c7fa1 CM |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. | |
| 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 | |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| a63c7fa1 CM |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <unistd.h> | |
| 21 | #include <sysdep.h> | |
| 22 | ||
| 23 | /* This must be initialized data because commons can't have aliases. */ | |
| 24 | void *__curbrk = 0; | |
| 25 | ||
| 26 | /* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt | |
| 27 | to work around different old braindamage in the old Linux ELF dynamic | |
| 28 | linker. */ | |
| 29 | weak_alias (__curbrk, ___brk_addr) | |
| 30 | ||
| 31 | int | |
| 32 | __brk (void *addr) | |
| 33 | { | |
| 34 | INTERNAL_SYSCALL_DECL (err); | |
| 35 | ||
| 36 | __curbrk = (void *) INTERNAL_SYSCALL (brk, err, 1, addr); | |
| 37 | if (__curbrk < addr) | |
| 38 | { | |
| 39 | __set_errno (ENOMEM); | |
| 40 | return -1; | |
| 41 | } | |
| 42 | ||
| 43 | return 0; | |
| 44 | } | |
| 45 | weak_alias (__brk, brk) |