/* brk system call for Linux/MIPS.   Copyright (C) 2000 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 <sys/syscall.h>void *___brk_addr = 0;int brk (void *addr){  void *newbrk;  {    register long int res __asm__ ("$2");    asm ("move\t$4,%2\n\t"	 "syscall"		/* Perform the system call.  */	 : "=r" (res)	 : "0" (__NR_brk), "r" (addr)	 : "$4", "$7");    newbrk = (void *) res;  }  ___brk_addr = newbrk;  if (newbrk < addr)    {      __set_errno (ENOMEM);      return -1;    }  return 0;}