Fixup mips so it now works and provides basic functionality

1 files changed, 49 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/mips/brk.c b/libc/sysdeps/linux/mips/brk.c
new file mode 100644
index 000000000..15026e102
--- /dev/null
+++ b/libc/sysdeps/linux/mips/brk.c
@@ -0,0 +1,49 @@
+/* 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 *__curbrk = 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;
+  }
+  __curbrk = newbrk;
+
+  if (newbrk < addr)
+    {
+      __set_errno (ENOMEM);
+      return -1;
+    }
+
+  return 0;
+}