e45805f0d3f8dafef1297cc7dc49e610713f023b |
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03-Jul-2014 |
Dan Albert <danalbert@google.com> |
Merge to upstream r212232. Includes ARM EHABI unwinder. Change-Id: I7e40c761abc0a4c67f11b8e9f85efefa6ba292ba
/external/libcxxabi/src/Unwind/UnwindCursor.hpp
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e085735cbedc82b1064f05ff796e32e906a95036 |
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08-Apr-2014 |
Dan Albert <danalbert@google.com> |
Gets libcxxabi building for Android Fixes a few configuration issues in libcxxabi and adds an Android makefile. Change-Id: I247372d87caabe0310bedc4540b68ab2ed1986c1
/external/libcxxabi/src/Unwind/UnwindCursor.hpp
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7dfc5215ff08e992ffe88c577ba15d641e610d75 |
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20-Mar-2014 |
Joerg Sonnenberger <joerg@bec.de> |
Fix DW_CFA_GNU_args_size handling. The primary architecture using this opcode is VAX. A function call pushes the number of arguments given onto the stack and "ret" will pop it automatically. The FDE of the caller contains the amount of stack space used for arguments (and possibly extra padding), so unwinding has to compensate for this when "returning" from a function. This is exactly the case when step() is done. The existing handling in unw_set_reg no longer makes sense. git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@204290 91177308-0d34-0410-b5e6-96231b3b80d8
/external/libcxxabi/src/Unwind/UnwindCursor.hpp
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6dc154019d5f0997d7df1d9e9f3ba1425396dcd8 |
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09-Oct-2013 |
Nick Kledzik <kledzik@apple.com> |
[unwind] Fix unw_init_remote_thread() use to void* instead of thread_t for parameter to match other implementations git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@192248 91177308-0d34-0410-b5e6-96231b3b80d8
/external/libcxxabi/src/Unwind/UnwindCursor.hpp
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b78da9875b6e35187b5d584746c78faaf3230a3d |
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07-Oct-2013 |
Nick Kledzik <kledzik@apple.com> |
libcxxabi contains the runtime support for C++. But, as some folks have realized, it is not complete. It relies on some _Unwind_* functions to be supplied by the OS. That means it cannot be ported to platforms that don’t already have an unwinder. Years ago Apple wrote its own unwinder for MacOSX and iOS. To make libcxxabi complete, Apple has decided the source code for its unwinder can be contributed to the open source LLVM libcxxabi project, with a dual licensed under LLVM and MIT license. So, I’ve spent some time cleaning up the sources to make them conform with LLVM style and to conditionalize the sources in a way that should make it easier to port to other platforms. The sources are in a separate "Unwind" directory under "src" in libcxxabi. Background: Most architectures now use "zero cost" exceptions for C++. The zero cost means there are no extra instructions executed if no exceptions are thrown. But if an exception is thrown, the runtime must consult side tables and figure out how to restore registers and "unwind" from the current stack frame to the catch clause. That ability to modify the stack frames and cause the thread to resume in a catch clause with all registers restored properly is the main purpose of the unwinder. This unwinder has two levels of API. The high level APIs are the _Unwind_* functions which the cxa_* exception functions in libcxxabi require. The low level APIs are the unw_* functions which are an interface defined by the the old HP libunwind project (which shares no code with this unwinder). git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@192136 91177308-0d34-0410-b5e6-96231b3b80d8
/external/libcxxabi/src/Unwind/UnwindCursor.hpp
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