| /* brk system call for Linux/MIPS. |
| Copyright (C) 2000, 2005, 2006 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <sysdep.h> |
| |
| void *__curbrk = 0; |
| |
| /* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt |
| to work around different old braindamage in the old Linux/x86 ELF |
| dynamic linker. Sigh. */ |
| weak_alias (__curbrk, ___brk_addr) |
| |
| int |
| __brk (void *addr) |
| { |
| void *newbrk; |
| |
| { |
| register long int res __asm__ ("$2"); |
| |
| asm ("move\t$4,%2\n\t" |
| "li\t%0,%1\n\t" |
| "syscall" /* Perform the system call. */ |
| : "=r" (res) |
| : "I" (SYS_ify (brk)), "r" (addr) |
| : "$4", "$7", __SYSCALL_CLOBBERS); |
| newbrk = (void *) res; |
| } |
| __curbrk = newbrk; |
| |
| if (newbrk < addr) |
| { |
| __set_errno (ENOMEM); |
| return -1; |
| } |
| |
| return 0; |
| } |
| weak_alias (__brk, brk) |