// Cases -1 and 7 are caught by a C++ test harness where the validity of
// of a C++ catch(...) clause catching a generated exception with a
// type info type of 7 is explained by: example in rules 1.6.4 in
-// http://sourcery.mentor.com/public/cxx-abi/abi-eh.html (v1.22)
+// http://mentorembedded.github.com/cxx-abi/abi-eh.html (v1.22)
//
// This code uses code from the llvm compiler-rt project and the llvm
// Kaleidoscope project.
//
//===----------------------------------------------------------------------===//
-#include "llvm/LLVMContext.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/ExecutionEngine/ExecutionEngine.h"
-#include "llvm/ExecutionEngine/JIT.h"
-#include "llvm/IRBuilder.h"
-#include "llvm/Module.h"
-#include "llvm/PassManager.h"
-#include "llvm/Intrinsics.h"
-#include "llvm/Analysis/Verifier.h"
-#include "llvm/DataLayout.h"
-#include "llvm/Target/TargetOptions.h"
-#include "llvm/Transforms/Scalar.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/Intrinsics.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/Module.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/TargetSelect.h"
+#include "llvm/Target/TargetOptions.h"
+#include "llvm/Transforms/Scalar.h"
// FIXME: Although all systems tested with (Linux, OS X), do not need this
// header file included. A user on ubuntu reported, undefined symbols
#include <sstream>
#include <stdexcept>
+#include <inttypes.h>
#ifndef USE_GLOBAL_STR_CONSTS
#define USE_GLOBAL_STR_CONSTS true
#endif
// System C++ ABI unwind types from:
-// http://sourcery.mentor.com/public/cxx-abi/abi-eh.html (v1.22)
+// http://mentorembedded.github.com/cxx-abi/abi-eh.html (v1.22)
extern "C" {
///
/// Note: The above unwind.h defines struct _Unwind_Exception to be aligned
/// on a double word boundary. This is necessary to match the standard:
-/// http://refspecs.freestandards.org/abi-eh-1.21.html
+/// http://mentorembedded.github.com/cxx-abi/abi-eh.html
struct OurBaseException_t {
struct OurExceptionType_t type;
}
-/// Deletes the true previosly allocated exception whose address
+/// Deletes the true previously allocated exception whose address
/// is calculated from the supplied OurBaseException_t::unwindException
/// member address. Handles (ignores), NULL pointers.
/// @param expToDelete exception to delete
/// This function is the struct _Unwind_Exception API mandated delete function
/// used by foreign exception handlers when deleting our exception
/// (OurException), instances.
-/// @param reason @link http://refspecs.freestandards.org/abi-eh-1.21.html
+/// @param reason See @link http://mentorembedded.github.com/cxx-abi/abi-eh.html
/// @unlink
/// @param expToDelete exception instance to delete
void deleteFromUnwindOurException(_Unwind_Reason_Code reason,
return result;
}
+unsigned getEncodingSize(uint8_t Encoding) {
+ if (Encoding == llvm::dwarf::DW_EH_PE_omit)
+ return 0;
+
+ switch (Encoding & 0x0F) {
+ case llvm::dwarf::DW_EH_PE_absptr:
+ return sizeof(uintptr_t);
+ case llvm::dwarf::DW_EH_PE_udata2:
+ return sizeof(uint16_t);
+ case llvm::dwarf::DW_EH_PE_udata4:
+ return sizeof(uint32_t);
+ case llvm::dwarf::DW_EH_PE_udata8:
+ return sizeof(uint64_t);
+ case llvm::dwarf::DW_EH_PE_sdata2:
+ return sizeof(int16_t);
+ case llvm::dwarf::DW_EH_PE_sdata4:
+ return sizeof(int32_t);
+ case llvm::dwarf::DW_EH_PE_sdata8:
+ return sizeof(int64_t);
+ default:
+ // not supported
+ abort();
+ }
+}
/// Read a pointer encoded value and advance pointer
/// See Variable Length Data in:
/// are supported. Filters are not supported.
/// See Variable Length Data in:
/// @link http://dwarfstd.org/Dwarf3.pdf @unlink
-/// Also see @link http://refspecs.freestandards.org/abi-eh-1.21.html @unlink
+/// Also see @link http://mentorembedded.github.com/cxx-abi/abi-eh.html @unlink
/// @param resultAction reference variable which will be set with result
/// @param classInfo our array of type info pointers (to globals)
/// @param actionEntry index into above type info array or 0 (clean up).
/// @returns whether or not a type info was found. False is returned if only
/// a cleanup was found
static bool handleActionValue(int64_t *resultAction,
- struct OurExceptionType_t **classInfo,
+ uint8_t TTypeEncoding,
+ const uint8_t *ClassInfo,
uintptr_t actionEntry,
uint64_t exceptionClass,
struct _Unwind_Exception *exceptionObject) {
fprintf(stderr,
"handleActionValue(...): exceptionObject = <%p>, "
"excp = <%p>.\n",
- exceptionObject,
- excp);
+ (void*)exceptionObject,
+ (void*)excp);
#endif
const uint8_t *actionPos = (uint8_t*) actionEntry,
#ifdef DEBUG
fprintf(stderr,
- "handleActionValue(...):typeOffset: <%lld>, "
- "actionOffset: <%lld>.\n",
+ "handleActionValue(...):typeOffset: <%" PRIi64 ">, "
+ "actionOffset: <%" PRIi64 ">.\n",
typeOffset,
actionOffset);
#endif
// Note: A typeOffset == 0 implies that a cleanup llvm.eh.selector
// argument has been matched.
- if ((typeOffset > 0) &&
- (type == (classInfo[-typeOffset])->type)) {
+ if (typeOffset > 0) {
#ifdef DEBUG
fprintf(stderr,
"handleActionValue(...):actionValue <%d> found.\n",
i);
#endif
- *resultAction = i + 1;
- ret = true;
- break;
+ unsigned EncSize = getEncodingSize(TTypeEncoding);
+ const uint8_t *EntryP = ClassInfo - typeOffset * EncSize;
+ uintptr_t P = readEncodedPointer(&EntryP, TTypeEncoding);
+ struct OurExceptionType_t *ThisClassInfo =
+ reinterpret_cast<struct OurExceptionType_t *>(P);
+ if (ThisClassInfo->type == type) {
+ *resultAction = i + 1;
+ ret = true;
+ break;
+ }
}
#ifdef DEBUG
/// Deals with the Language specific data portion of the emitted dwarf code.
-/// See @link http://refspecs.freestandards.org/abi-eh-1.21.html @unlink
+/// See @link http://mentorembedded.github.com/cxx-abi/abi-eh.html @unlink
/// @param version unsupported (ignored), unwind version
/// @param lsda language specific data area
/// @param _Unwind_Action actions minimally supported unwind stage
// emitted dwarf code)
uintptr_t funcStart = _Unwind_GetRegionStart(context);
uintptr_t pcOffset = pc - funcStart;
- struct OurExceptionType_t **classInfo = NULL;
+ const uint8_t *ClassInfo = NULL;
// Note: See JITDwarfEmitter::EmitExceptionTable(...) for corresponding
// dwarf emission
// were flagged by type info arguments to llvm.eh.selector
// intrinsic
classInfoOffset = readULEB128(&lsda);
- classInfo = (struct OurExceptionType_t**) (lsda + classInfoOffset);
+ ClassInfo = lsda + classInfoOffset;
}
// Walk call-site table looking for range that
const uint8_t *actionTableStart = callSiteTableEnd;
const uint8_t *callSitePtr = callSiteTableStart;
- bool foreignException = false;
-
while (callSitePtr < callSiteTableEnd) {
uintptr_t start = readEncodedPointer(&callSitePtr,
callSiteEncoding);
// We have been notified of a foreign exception being thrown,
// and we therefore need to execute cleanup landing pads
actionEntry = 0;
- foreignException = true;
}
if (landingPad == 0) {
if (actionEntry) {
exceptionMatched = handleActionValue(&actionValue,
- classInfo,
+ ttypeEncoding,
+ ClassInfo,
actionEntry,
exceptionClass,
exceptionObject);
/// This is the personality function which is embedded (dwarf emitted), in the
/// dwarf unwind info block. Again see: JITDwarfEmitter.cpp.
-/// See @link http://refspecs.freestandards.org/abi-eh-1.21.html @unlink
+/// See @link http://mentorembedded.github.com/cxx-abi/abi-eh.html @unlink
/// @param version unsupported (ignored), unwind version
/// @param _Unwind_Action actions minimally supported unwind stage
/// (forced specifically not supported)
#ifdef DEBUG
fprintf(stderr,
"ourPersonality(...):lsda = <%p>.\n",
- lsda);
+ (void*)lsda);
#endif
// The real work of the personality function is captured here
/// Generates our _Unwind_Exception class from a given character array.
/// thereby handling arbitrary lengths (not in standard), and handling
/// embedded \0s.
-/// See @link http://refspecs.freestandards.org/abi-eh-1.21.html @unlink
+/// See @link http://mentorembedded.github.com/cxx-abi/abi-eh.html @unlink
/// @param classChars char array to encode. NULL values not checkedf
/// @param classCharsSize number of chars in classChars. Value is not checked.
/// @returns class value
new llvm::GlobalVariable(module,
stringConstant->getType(),
true,
- llvm::GlobalValue::LinkerPrivateLinkage,
+ llvm::GlobalValue::PrivateLinkage,
stringConstant,
"");
}
new llvm::GlobalVariable(module,
stringConstant->getType(),
true,
- llvm::GlobalValue::LinkerPrivateLinkage,
+ llvm::GlobalValue::PrivateLinkage,
stringConstant,
"");
}
llvm::Value *cast = builder.CreateBitCast(stringVar,
builder.getInt8PtrTy());
- builder.CreateCall2(&printFunct, &toPrint, cast);
+ builder.CreateCall(&printFunct, {&toPrint, cast});
}
/// @param numExceptionsToCatch length of exceptionTypesToCatch array
/// @param exceptionTypesToCatch array of type info types to "catch"
/// @returns generated function
-static
-llvm::Function *createCatchWrappedInvokeFunction(llvm::Module &module,
- llvm::IRBuilder<> &builder,
- llvm::FunctionPassManager &fpm,
- llvm::Function &toInvoke,
- std::string ourId,
- unsigned numExceptionsToCatch,
- unsigned exceptionTypesToCatch[]) {
+static llvm::Function *createCatchWrappedInvokeFunction(
+ llvm::Module &module, llvm::IRBuilder<> &builder,
+ llvm::legacy::FunctionPassManager &fpm, llvm::Function &toInvoke,
+ std::string ourId, unsigned numExceptionsToCatch,
+ unsigned exceptionTypesToCatch[]) {
llvm::LLVMContext &context = module.getContext();
llvm::Function *toPrint32Int = module.getFunction("print32Int");
builder.SetInsertPoint(exceptionBlock);
llvm::Function *personality = module.getFunction("ourPersonality");
+ ret->setPersonalityFn(personality);
llvm::LandingPadInst *caughtResult =
builder.CreateLandingPad(ourCaughtResultType,
- personality,
numExceptionsToCatch,
"landingPad");
// (_Unwind_Exception instance). This member tells us whether or not
// the exception is foreign.
llvm::Value *unwindExceptionClass =
- builder.CreateLoad(builder.CreateStructGEP(
- builder.CreatePointerCast(unwindException,
- ourUnwindExceptionType->getPointerTo(0)),
- 0));
+ builder.CreateLoad(builder.CreateStructGEP(
+ ourUnwindExceptionType,
+ builder.CreatePointerCast(unwindException,
+ ourUnwindExceptionType->getPointerTo()),
+ 0));
// Branch to the externalExceptionBlock if the exception is foreign or
// to a catch router if not. Either way the finally block will be run.
//
// Note: Index is not relative to pointer but instead to structure
// unlike a true getelementptr (GEP) instruction
- typeInfoThrown = builder.CreateStructGEP(typeInfoThrown, 0);
+ typeInfoThrown = builder.CreateStructGEP(ourExceptionType, typeInfoThrown, 0);
llvm::Value *typeInfoThrownType =
- builder.CreateStructGEP(typeInfoThrown, 0);
+ builder.CreateStructGEP(builder.getInt8PtrTy(), typeInfoThrown, 0);
generateIntegerPrint(context,
module,
/// @param nativeThrowFunct function which will throw a foreign exception
/// if the above nativeThrowType matches generated function's arg.
/// @returns generated function
-static
-llvm::Function *createThrowExceptionFunction(llvm::Module &module,
- llvm::IRBuilder<> &builder,
- llvm::FunctionPassManager &fpm,
- std::string ourId,
- int32_t nativeThrowType,
- llvm::Function &nativeThrowFunct) {
+static llvm::Function *
+createThrowExceptionFunction(llvm::Module &module, llvm::IRBuilder<> &builder,
+ llvm::legacy::FunctionPassManager &fpm,
+ std::string ourId, int32_t nativeThrowType,
+ llvm::Function &nativeThrowFunct) {
llvm::LLVMContext &context = module.getContext();
namedValues.clear();
ArgTypes unwindArgTypes;
/// @param nativeThrowFunctName name of external function which will throw
/// a foreign exception
/// @returns outermost generated test function.
-llvm::Function *createUnwindExceptionTest(llvm::Module &module,
- llvm::IRBuilder<> &builder,
- llvm::FunctionPassManager &fpm,
- std::string nativeThrowFunctName) {
+llvm::Function *
+createUnwindExceptionTest(llvm::Module &module, llvm::IRBuilder<> &builder,
+ llvm::legacy::FunctionPassManager &fpm,
+ std::string nativeThrowFunctName) {
// Number of type infos to generate
unsigned numTypeInfos = 6;
return(outerCatchFunct);
}
-
+namespace {
/// Represents our foreign exceptions
class OurCppRunException : public std::runtime_error {
public:
std::runtime_error::operator=(toCopy)));
}
- ~OurCppRunException (void) throw () {}
+ ~OurCppRunException(void) throw() override {}
};
-
+} // end anonymous namespace
/// Throws foreign C++ exception.
/// @param ignoreIt unused parameter that allows function to match implied
catch (...) {
// Catch all exceptions including our generated ones. This latter
// functionality works according to the example in rules 1.6.4 of
- // http://sourcery.mentor.com/public/cxx-abi/abi-eh.html (v1.22),
+ // http://mentorembedded.github.com/cxx-abi/abi-eh.html (v1.22),
// given that these will be exceptions foreign to C++
// (the _Unwind_Exception::exception_class should be different from
// the one used by C++).
#ifdef DEBUG
fprintf(stderr,
"createStandardUtilityFunctions(...):ourBaseFromUnwindOffset "
- "= %lld, sizeof(struct OurBaseException_t) - "
+ "= %" PRIi64 ", sizeof(struct OurBaseException_t) - "
"sizeof(struct _Unwind_Exception) = %lu.\n",
ourBaseFromUnwindOffset,
sizeof(struct OurBaseException_t) -
std::vector<llvm::Constant*> structVals;
llvm::Constant *nextStruct;
- llvm::GlobalVariable *nextGlobal = NULL;
// Generate each type info
//
typeInfoName = typeInfoNameBuilder.str();
// Note: Does not seem to work without allocation
- nextGlobal =
new llvm::GlobalVariable(module,
ourTypeInfoType,
true,
// If not set, exception handling will not be turned on
llvm::TargetOptions Opts;
- Opts.JITExceptionHandling = true;
llvm::InitializeNativeTarget();
+ llvm::InitializeNativeTargetAsmPrinter();
llvm::LLVMContext &context = llvm::getGlobalContext();
llvm::IRBuilder<> theBuilder(context);
// Make the module, which holds all the code.
- llvm::Module *module = new llvm::Module("my cool jit", context);
+ std::unique_ptr<llvm::Module> Owner =
+ llvm::make_unique<llvm::Module>("my cool jit", context);
+ llvm::Module *module = Owner.get();
+
+ std::unique_ptr<llvm::RTDyldMemoryManager> MemMgr(new llvm::SectionMemoryManager());
// Build engine with JIT
- llvm::EngineBuilder factory(module);
+ llvm::EngineBuilder factory(std::move(Owner));
factory.setEngineKind(llvm::EngineKind::JIT);
- factory.setAllocateGVsWithCode(false);
factory.setTargetOptions(Opts);
+ factory.setMCJITMemoryManager(std::move(MemMgr));
llvm::ExecutionEngine *executionEngine = factory.create();
{
- llvm::FunctionPassManager fpm(module);
+ llvm::legacy::FunctionPassManager fpm(module);
// Set up the optimizer pipeline.
// Start with registering info about how the
// target lays out data structures.
- fpm.add(new llvm::DataLayout(*executionEngine->getDataLayout()));
+ module->setDataLayout(executionEngine->getDataLayout());
// Optimizations turned on
#ifdef ADD_OPT_PASSES
fpm,
"throwCppException");
+ executionEngine->finalizeObject();
+
fprintf(stderr, "\nBegin module dump:\n\n");
module->dump();
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