1 files changed, 42 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/unwind/FindEnclosingFunction.c b/src/third_party/unwind/dist/src/unwind/FindEnclosingFunction.c
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index 00000000000..4f106661725
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+++ b/src/third_party/unwind/dist/src/unwind/FindEnclosingFunction.c
@@ -0,0 +1,42 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2003-2004 Hewlett-Packard Co
+        Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#include "unwind-internal.h"
+
+void *
+_Unwind_FindEnclosingFunction (void *ip)
+{
+  unw_proc_info_t pi;
+
+  if (unw_get_proc_info_by_ip (unw_local_addr_space,
+                               (unw_word_t) (uintptr_t) ip, &pi, 0)
+      < 0)
+    return NULL;
+
+  return (void *) (uintptr_t) pi.start_ip;
+}
+
+void *__libunwind_Unwind_FindEnclosingFunction (void *)
+     ALIAS (_Unwind_FindEnclosingFunction);