1 files changed, 58 insertions, 0 deletions
diff --git a/libgloss/microblaze/sbrk.c b/libgloss/microblaze/sbrk.c
new file mode 100644
index 0000000..1a506db
--- /dev/null
+++ b/libgloss/microblaze/sbrk.c
@@ -0,0 +1,58 @@
+/* Copyright (c) 2004, 2009 Xilinx, Inc.  All rights reserved. 
+   
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+   
+   1.  Redistributions source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer. 
+   
+   2.  Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution. 
+   
+   3.  Neither the name of Xilinx nor the names of its contributors may be
+   used to endorse or promote products derived from this software without
+   specific prior written permission. 
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
+   IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+   TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+   PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#include <errno.h>
+
+extern char _heap_start[];
+extern char _heap[];
+extern char _heap_end[];
+
+static char *heap_ptr;
+
+char *sbrk (int nbytes)
+{
+  char *base;
+
+  if (!heap_ptr)
+    heap_ptr = (char *)&_heap;
+
+  base = heap_ptr;
+  heap_ptr += nbytes;
+
+  if (heap_ptr <= ((char *)&_heap_end + 1))
+    return base;
+  else
+    {
+      errno = ENOMEM;
+      return ((char *)-1);
+    }
+}
+