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| author | Peter Collingbourne <peter@pcc.me.uk> | 2015-02-20 20:30:56 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2015-02-20 20:30:56 +0000 |
| commit | a4ccff32818c05c9f2d7a2a6503866d13636b664 (patch) | |
| tree | d0853e78880e850956141ea043fecb36250e5842 /clang/lib/CodeGen/CodeGenModule.h | |
| parent | e6909c8e8ba07acb5e6366186fe186c91054e93c (diff) | |
| download | llvm-a4ccff32818c05c9f2d7a2a6503866d13636b664.zip llvm-a4ccff32818c05c9f2d7a2a6503866d13636b664.tar.gz llvm-a4ccff32818c05c9f2d7a2a6503866d13636b664.tar.bz2 | |
Implement Control Flow Integrity for virtual calls.
This patch introduces the -fsanitize=cfi-vptr flag, which enables a control
flow integrity scheme that checks that virtual calls take place using a vptr of
the correct dynamic type. More details in the new docs/ControlFlowIntegrity.rst
file.
It also introduces the -fsanitize=cfi flag, which is currently a synonym for
-fsanitize=cfi-vptr, but will eventually cover all CFI checks implemented
in Clang.
Differential Revision: http://reviews.llvm.org/D7424
llvm-svn: 230055
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.h')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenModule.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h index 7daa093..6902d19 100644 --- a/clang/lib/CodeGen/CodeGenModule.h +++ b/clang/lib/CodeGen/CodeGenModule.h @@ -1103,6 +1103,11 @@ public: /// \param D Threadprivate declaration. void EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D); + /// Emit bit set entries for the given vtable using the given layout if + /// vptr CFI is enabled. + void EmitVTableBitSetEntries(llvm::GlobalVariable *VTable, + const VTableLayout &VTLayout); + private: llvm::Constant * GetOrCreateLLVMFunction(StringRef MangledName, llvm::Type *Ty, GlobalDecl D, |