1 files changed, 64 insertions, 0 deletions
diff --git a/libbacktrace/nounwind.c b/libbacktrace/nounwind.c
new file mode 100644
index 00000000000..fea3c53d271
--- /dev/null
+++ b/libbacktrace/nounwind.c
@@ -0,0 +1,64 @@
+/* backtrace.c -- Entry point for stack backtrace library.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of 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) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "config.h"
+
+#include <sys/types.h>
+
+#include "backtrace.h"
+
+#include "internal.h"
+
+/* This source file is compiled if the unwind library is not
+   available.  */
+
+int
+backtrace (int skip ATTRIBUTE_UNUSED,
+	   backtrace_full_callback callback ATTRIBUTE_UNUSED,
+	   backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data,
+		  "no stack trace because unwind library not available",
+		  0);
+  return 0;
+}
+
+int
+backtrace_simple (int skip ATTRIBUTE_UNUSED,
+		  backtrace_simple_callback callback ATTRIBUTE_UNUSED,
+		  backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data,
+		  "no stack trace because unwind library not available",
+		  0);
+  return 0;
+}