const llvm::Type *MethodListPtrTy;
llvm::Function *EnumerationMutationFn;
+
+ /// ExceptionDataTy - LLVM type for struct _objc_exception_data.
+ const llvm::Type *ExceptionDataTy;
+
+ /// ExceptionThrowFn - LLVM objc_exception_throw function.
+ llvm::Function *ExceptionThrowFn;
+
+ /// ExceptionTryEnterFn - LLVM objc_exception_try_enter function.
+ llvm::Function *ExceptionTryEnterFn;
+
+ /// ExceptionTryExitFn - LLVM objc_exception_try_exit function.
+ llvm::Function *ExceptionTryExitFn;
+
+ /// ExceptionExtractFn - LLVM objc_exception_extract function.
+ llvm::Function *ExceptionExtractFn;
+
+ /// ExceptionMatchFn - LLVM objc_exception_match function.
+ llvm::Function *ExceptionMatchFn;
+
+ /// SetJmpFn - LLVM _setjmp function.
+ llvm::Function *SetJmpFn;
+
public:
ObjCTypesHelper(CodeGen::CodeGenModule &cgm);
~ObjCTypesHelper();
llvm::Function::ExternalLinkage,
"objc_enumerationMutation",
&CGM.getModule());
+
+ // FIXME: This is the size of the setjmp buffer and should be
+ // target specific. 18 is what's used on 32-bit X86.
+ uint64_t SetJmpBufferSize = 18;
+
+ // Exceptions
+ const llvm::Type *StackPtrTy =
+ llvm::PointerType::getUnqual(llvm::ArrayType::get(llvm::Type::Int8Ty, 4));
+
+ ExceptionDataTy =
+ llvm::StructType::get(llvm::ArrayType::get(llvm::Type::Int32Ty,
+ SetJmpBufferSize),
+ StackPtrTy, NULL);
+ CGM.getModule().addTypeName("struct._objc_exception_data",
+ ExceptionDataTy);
+
+ Params.clear();
+ Params.push_back(ObjectPtrTy);
+ ExceptionThrowFn =
+ llvm::Function::Create(llvm::FunctionType::get(llvm::Type::VoidTy,
+ Params,
+ false),
+ llvm::Function::ExternalLinkage,
+ "objc_exception_throw",
+ &CGM.getModule());
+
+ Params.clear();
+ Params.push_back(llvm::PointerType::getUnqual(ExceptionDataTy));
+ ExceptionTryEnterFn =
+ llvm::Function::Create(llvm::FunctionType::get(llvm::Type::VoidTy,
+ Params,
+ false),
+ llvm::Function::ExternalLinkage,
+ "objc_exception_try_enter",
+ &CGM.getModule());
+ ExceptionTryExitFn =
+ llvm::Function::Create(llvm::FunctionType::get(llvm::Type::VoidTy,
+ Params,
+ false),
+ llvm::Function::ExternalLinkage,
+ "objc_exception_try_exit",
+ &CGM.getModule());
+ ExceptionExtractFn =
+ llvm::Function::Create(llvm::FunctionType::get(ObjectPtrTy,
+ Params,
+ false),
+ llvm::Function::ExternalLinkage,
+ "objc_exception_extract",
+ &CGM.getModule());
+
+ Params.clear();
+ Params.push_back(ClassPtrTy);
+ Params.push_back(ObjectPtrTy);
+ ExceptionMatchFn =
+ llvm::Function::Create(llvm::FunctionType::get(llvm::Type::Int32Ty,
+ Params,
+ false),
+ llvm::Function::ExternalLinkage,
+ "objc_exception_match",
+ &CGM.getModule());
+
+ Params.clear();
+ Params.push_back(llvm::PointerType::getUnqual(llvm::Type::Int32Ty));
+ SetJmpFn =
+ llvm::Function::Create(llvm::FunctionType::get(llvm::Type::Int32Ty,
+ Params,
+ false),
+ llvm::Function::ExternalLinkage,
+ "_setjmp",
+ &CGM.getModule());
+
}
ObjCTypesHelper::~ObjCTypesHelper() {