/* 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, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include <unistd.h> #include <sys/syscall.h> void *__curbrk attribute_hidden = 0; 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" (__NR_brk), "r" (addr) : "$4", "$7", __SYSCALL_CLOBBERS); newbrk = (void *) res; } __curbrk = newbrk; if (newbrk < addr) { __set_errno (ENOMEM); return -1; } return 0; } libc_hidden_def(brk)