| /* brk system call for Linux/Xtensa. |
| Copyright (C) 1996, 1997, 2005, 2007 Free Software Foundation, Inc. |
| 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, write to the Free |
| Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <sys/syscall.h> |
| |
| /* This must be initialized data because commons can't have aliases. */ |
| void *__curbrk attribute_hidden = 0; |
| |
| int |
| brk (void *addr) |
| { |
| void *newbrk; |
| |
| __curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr); |
| |
| if (newbrk < addr) |
| { |
| __set_errno (ENOMEM); |
| return -1; |
| } |
| |
| return 0; |
| } |
| libc_hidden_def(brk) |