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authorEvgeniy Stepanov <eugeni.stepanov@gmail.com>2015-12-15 23:00:20 +0000
committerEvgeniy Stepanov <eugeni.stepanov@gmail.com>2015-12-15 23:00:20 +0000
commitfd6f92d5cb962a2b72c105dd8440ba831019964c (patch)
tree93571c9c74510077ebc664c91041741517ddcd21 /clang/lib/CodeGen/CodeGenModule.h
parent67849d56c3ce2459b8681da5e7935289018dcdbb (diff)
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Cross-DSO control flow integrity (Clang part).
Clang-side cross-DSO CFI. * Adds a command line flag -f[no-]sanitize-cfi-cross-dso. * Links a runtime library when enabled. * Emits __cfi_slowpath calls is bitset test fails. * Emits extra hash-based bitsets for external CFI checks. * Sets a module flag to enable __cfi_check generation during LTO. This mode does not yet support diagnostics. llvm-svn: 255694
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.h')
-rw-r--r--clang/lib/CodeGen/CodeGenModule.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index cede404..3311383 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -1106,15 +1106,21 @@ public:
void EmitVTableBitSetEntries(llvm::GlobalVariable *VTable,
const VTableLayout &VTLayout);
+ /// Generate a cross-DSO type identifier for type.
+ llvm::ConstantInt *CreateCfiIdForTypeMetadata(llvm::Metadata *MD);
+
/// Create a metadata identifier for the given type. This may either be an
/// MDString (for external identifiers) or a distinct unnamed MDNode (for
/// internal identifiers).
llvm::Metadata *CreateMetadataIdentifierForType(QualType T);
- /// Create a bitset entry for the given vtable.
- llvm::MDTuple *CreateVTableBitSetEntry(llvm::GlobalVariable *VTable,
- CharUnits Offset,
- const CXXRecordDecl *RD);
+ /// Create a bitset entry for the given function and add it to BitsetsMD.
+ void CreateFunctionBitSetEntry(const FunctionDecl *FD, llvm::Function *F);
+
+ /// Create a bitset entry for the given vtable and add it to BitsetsMD.
+ void CreateVTableBitSetEntry(llvm::NamedMDNode *BitsetsMD,
+ llvm::GlobalVariable *VTable, CharUnits Offset,
+ const CXXRecordDecl *RD);
/// \breif Get the declaration of std::terminate for the platform.
llvm::Constant *getTerminateFn();