1 files changed, 45 insertions, 0 deletions
diff --git a/Source/WebCore/platform/win/makesafeseh.asm b/Source/WebCore/platform/win/makesafeseh.asm
new file mode 100644
index 000000000..32fcfaf24
--- /dev/null
+++ b/Source/WebCore/platform/win/makesafeseh.asm
@@ -0,0 +1,45 @@
+;/*
+; * Copyright (C) 2013 Apple, 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 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.
+; *
+; * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. 
+; */
+
+; Tell Windows to trust our error handler. This must be done within an assembly
+; module. We cannot do it on-the-fly in our C++ code.
+;
+; Note also (confirmed by Raymond Chen) that we must use this assembly thunk
+; to call our custom exception handler. (See http://jpassing.com/2008/05/20/fun-with-low-level-seh/)
+
+.386
+.model FLAT, STDCALL
+
+EXTERN exceptionHandler@16 : near   ; Defined in StructuredExceptionHandlerSuppressor.cpp
+
+exceptionHandlerThunk proto
+.safeseh exceptionHandlerThunk
+
+.code
+exceptionHandlerThunk proc
+    jmp exceptionHandler@16
+exceptionHandlerThunk endp
+
+END
+\ No newline at end of file