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Introduce the support structures necessary to deal with the Windows ARM EH data. These definitions are extremely aggressive about assertions to aid future use for generation of the entries and subsequent decoding. The names for the various fields are meant to reflect the names used by the Visual Studio toolchain to aid communication. Due to the complexity in reading a few of the values, there are a couple of additional utility functions to decode the information. In general, there are two ways to encode the unwinding information: - packed, which places the data inline into the _IMAGE_ARM_RUNTIME_FUNCTION_ENTRY structure. - unpacked, which places the data into auxiliary structures placed into the .xdata section. The set of structures allow reading of data in either encoding, with the minor caveat that epilogue scopes need to be decoded manually by constructing the structure from the data returned by the RuntimeFunction structure. These definitions are meant for read-only access at the current point as the first use of them will be to decode the exception information. llvm-svn: 209998
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for the Low Level Virtual Machine, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you're writing a package for LLVM, see docs/Packaging.rst for our suggestions.