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| author | Kuba Brecka <kuba.brecka@gmail.com> | 2016-11-14 21:41:13 +0000 |
|---|---|---|
| committer | Kuba Brecka <kuba.brecka@gmail.com> | 2016-11-14 21:41:13 +0000 |
| commit | ddfdba3b01fa2ca9066feaf472feb78da1ca2cfc (patch) | |
| tree | f7bd88d769015d7c3bc086588aae672210cb6e3c /llvm/lib/Analysis | |
| parent | 5375fe820cff7ae7f3c5c771f28c6f5518f2ee60 (diff) | |
| download | bcm5719-llvm-ddfdba3b01fa2ca9066feaf472feb78da1ca2cfc.tar.gz bcm5719-llvm-ddfdba3b01fa2ca9066feaf472feb78da1ca2cfc.zip | |
[tsan] Add support for C++ exceptions into TSan (call __tsan_func_exit during unwinding), LLVM part
This adds support for TSan C++ exception handling, where we need to add extra calls to __tsan_func_exit when a function is exitted via exception mechanisms. Otherwise the shadow stack gets corrupted (leaked). This patch moves and enhances the existing implementation of EscapeEnumerator that finds all possible function exit points, and adds extra EH cleanup blocks where needed.
Differential Revision: https://reviews.llvm.org/D26177
llvm-svn: 286893
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/EHPersonalities.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/EHPersonalities.cpp b/llvm/lib/Analysis/EHPersonalities.cpp index 8896ef06d0c..ebf0a370b0b 100644 --- a/llvm/lib/Analysis/EHPersonalities.cpp +++ b/llvm/lib/Analysis/EHPersonalities.cpp @@ -40,6 +40,29 @@ EHPersonality llvm::classifyEHPersonality(const Value *Pers) { .Default(EHPersonality::Unknown); } +StringRef llvm::getEHPersonalityName(EHPersonality Pers) { + switch (Pers) { + case EHPersonality::GNU_Ada: return "__gnat_eh_personality"; + case EHPersonality::GNU_CXX: return "__gxx_personality_v0"; + case EHPersonality::GNU_CXX_SjLj: return "__gxx_personality_sj0"; + case EHPersonality::GNU_C: return "__gcc_personality_v0"; + case EHPersonality::GNU_C_SjLj: return "__gcc_personality_sj0"; + case EHPersonality::GNU_ObjC: return "__objc_personality_v0"; + case EHPersonality::MSVC_X86SEH: return "_except_handler3"; + case EHPersonality::MSVC_Win64SEH: return "__C_specific_handler"; + case EHPersonality::MSVC_CXX: return "__CxxFrameHandler3"; + case EHPersonality::CoreCLR: return "ProcessCLRException"; + case EHPersonality::Rust: return "rust_eh_personality"; + case EHPersonality::Unknown: llvm_unreachable("Unknown EHPersonality!"); + } + + llvm_unreachable("Invalid EHPersonality!"); +} + +EHPersonality llvm::getDefaultEHPersonality(const Triple &T) { + return EHPersonality::GNU_C; +} + bool llvm::canSimplifyInvokeNoUnwind(const Function *F) { EHPersonality Personality = classifyEHPersonality(F->getPersonalityFn()); // We can't simplify any invokes to nounwind functions if the personality |
