brk implementation for Linux/CRIS.

diff --git a/sysdeps/unix/sysv/linux/cris/brk.c b/sysdeps/unix/sysv/linux/cris/brk.c
new file mode 100644 (file)
index 0000000..32a5145
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/cris/brk.c
@@ -0,0 +1,44 @@
+/* brk system call for Linux/CRIS.
+   Copyright (C) 1995, 1996, 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  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>
+
+/* This must be initialized data because commons can't have aliases.  */
+void *__curbrk = 0;
+
+int
+__brk (void *addr)
+{
+  unsigned char *newbrk;
+
+  newbrk = (unsigned char *) INLINE_SYSCALL (brk, 1, addr);
+
+  __curbrk = newbrk;
+
+  if (newbrk < (unsigned char *) addr)
+    {
+      __set_errno (ENOMEM);
+      return -1;
+    }
+
+  return 0;
+}
+weak_alias (__brk, brk)