1 files changed, 103 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/unwind/RaiseException.c b/src/third_party/unwind/dist/src/unwind/RaiseException.c
new file mode 100644
index 00000000000..3c3ca19e989
--- /dev/null
+++ b/src/third_party/unwind/dist/src/unwind/RaiseException.c
@@ -0,0 +1,103 @@
+/* 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"
+
+_Unwind_Reason_Code
+_Unwind_RaiseException (struct _Unwind_Exception *exception_object)
+{
+  uint64_t exception_class = exception_object->exception_class;
+  _Unwind_Personality_Fn personality;
+  struct _Unwind_Context context;
+  _Unwind_Reason_Code reason;
+  unw_proc_info_t pi;
+  unw_context_t uc;
+  unw_word_t ip;
+  int ret;
+
+  Debug (1, "(exception_object=%p)\n", exception_object);
+
+  if (_Unwind_InitContext (&context, &uc) < 0)
+    return _URC_FATAL_PHASE1_ERROR;
+
+  /* Phase 1 (search phase) */
+
+  while (1)
+    {
+      if ((ret = unw_step (&context.cursor)) <= 0)
+        {
+          if (ret == 0)
+            {
+              Debug (1, "no handler found\n");
+              return _URC_END_OF_STACK;
+            }
+          else
+            return _URC_FATAL_PHASE1_ERROR;
+        }
+
+      if (unw_get_proc_info (&context.cursor, &pi) < 0)
+        return _URC_FATAL_PHASE1_ERROR;
+
+      personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler;
+      if (personality)
+        {
+          reason = (*personality) (_U_VERSION, _UA_SEARCH_PHASE,
+                                   exception_class, exception_object,
+                                   &context);
+          if (reason != _URC_CONTINUE_UNWIND)
+            {
+              if (reason == _URC_HANDLER_FOUND)
+                break;
+              else
+                {
+                  Debug (1, "personality returned %d\n", reason);
+                  return _URC_FATAL_PHASE1_ERROR;
+                }
+            }
+        }
+    }
+
+  /* Exceptions are associated with IP-ranges.  If a given exception
+     is handled at a particular IP, it will _always_ be handled at
+     that IP.  If this weren't true, we'd have to track the tuple
+     (IP,SP,BSP) to uniquely identify the stack frame that's handling
+     the exception.  */
+  if (unw_get_reg (&context.cursor, UNW_REG_IP, &ip) < 0)
+    return _URC_FATAL_PHASE1_ERROR;
+  exception_object->private_1 = 0;      /* clear "stop" pointer */
+  exception_object->private_2 = ip;     /* save frame marker */
+
+  Debug (1, "found handler for IP=%lx; entering cleanup phase\n", (long) ip);
+
+  /* Reset the cursor to the first frame: */
+  if (unw_init_local (&context.cursor, &uc) < 0)
+    return _URC_FATAL_PHASE1_ERROR;
+
+  return _Unwind_Phase2 (exception_object, &context);
+}
+
+_Unwind_Reason_Code
+__libunwind_Unwind_RaiseException (struct _Unwind_Exception *)
+     ALIAS (_Unwind_RaiseException);