diff options
| author | Saleem Abdulrasool <compnerd@compnerd.org> | 2015-09-20 02:08:31 +0000 |
|---|---|---|
| committer | Saleem Abdulrasool <compnerd@compnerd.org> | 2015-09-20 02:08:31 +0000 |
| commit | 6bf23547295cfd6cd373e56adcb6f69e28b5aaaf (patch) | |
| tree | 2aef961db44500f8fe3e6081a5c54bc4c66c523a /src/cxa_personality.cpp | |
| parent | 7aff420fb2b10cbad3339f45fbdb924fa21d76d7 (diff) | |
EH: fix register usage for SjLj
When using SjLj EH, do not use __builtin_eh_return_regno, map directly to the
ID. This would work on some targets, particularly those where the non-SjLj EH
personality used the same register mapping (0 -> 0, 1 -> 1). However, this is
not guaranteed. Avoiding the use of the builtin enables the use of libc++ with
SjLj EH on all targets.
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@248108 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'src/cxa_personality.cpp')
| -rw-r--r-- | src/cxa_personality.cpp | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/cxa_personality.cpp b/src/cxa_personality.cpp index 6eb866e..63adf31 100644 --- a/src/cxa_personality.cpp +++ b/src/cxa_personality.cpp @@ -514,11 +514,14 @@ void set_registers(_Unwind_Exception* unwind_exception, _Unwind_Context* context, const scan_results& results) { - _Unwind_SetGR(context, __builtin_eh_return_data_regno(0), - reinterpret_cast<uintptr_t>(unwind_exception)); - _Unwind_SetGR(context, __builtin_eh_return_data_regno(1), - static_cast<uintptr_t>(results.ttypeIndex)); - _Unwind_SetIP(context, results.landingPad); +#if defined(__USING_SJLJ_EXCEPTIONS__) +#define __builtin_eh_return_data_regno(regno) regno +#endif + _Unwind_SetGR(context, __builtin_eh_return_data_regno(0), + reinterpret_cast<uintptr_t>(unwind_exception)); + _Unwind_SetGR(context, __builtin_eh_return_data_regno(1), + static_cast<uintptr_t>(results.ttypeIndex)); + _Unwind_SetIP(context, results.landingPad); } /* |