#include "Interpreter.h"
#include "ExecutionAnnotations.h"
-#include "llvm/iOther.h"
-#include "llvm/iTerminators.h"
-#include "llvm/iMemory.h"
-#include "llvm/Type.h"
-#include "llvm/ConstPoolVals.h"
+#include "llvm/Module.h"
+#include "llvm/Instructions.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Constants.h"
#include "llvm/Assembly/Writer.h"
-#include "llvm/Support/DataTypes.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/GlobalVariable.h"
+#include "Support/CommandLine.h"
+#include "Support/Statistic.h"
+#include <math.h> // For fmod
+#include <signal.h>
+#include <setjmp.h>
+
+Interpreter *TheEE = 0;
+
+namespace {
+ Statistic<> NumDynamicInsts("lli", "Number of dynamic instructions executed");
+
+ cl::opt<bool>
+ QuietMode("quiet", cl::desc("Do not emit any non-program output"),
+ cl::init(true));
+
+ cl::alias
+ QuietModeA("q", cl::desc("Alias for -quiet"), cl::aliasopt(QuietMode));
+
+ cl::opt<bool>
+ ArrayChecksEnabled("array-checks", cl::desc("Enable array bound checks"));
+
+ cl::opt<bool>
+ AbortOnExceptions("abort-on-exception",
+ cl::desc("Halt execution on a machine exception"));
+}
// Create a TargetData structure to handle memory addressing and size/alignment
// computations
//
-static TargetData TD("lli Interpreter");
+CachedWriter CW; // Object to accelerate printing of LLVM
+
+#ifdef PROFILE_STRUCTURE_FIELDS
+static cl::opt<bool>
+ProfileStructureFields("profilestructfields",
+ cl::desc("Profile Structure Field Accesses"));
+#include <map>
+static std::map<const StructType *, std::vector<unsigned> > FieldAccessCounts;
+#endif
+
+sigjmp_buf SignalRecoverBuffer;
+static bool InInstruction = false;
+
+extern "C" {
+static void SigHandler(int Signal) {
+ if (InInstruction)
+ siglongjmp(SignalRecoverBuffer, Signal);
+}
+}
+
+static void initializeSignalHandlers() {
+ struct sigaction Action;
+ Action.sa_handler = SigHandler;
+ Action.sa_flags = SA_SIGINFO;
+ sigemptyset(&Action.sa_mask);
+ sigaction(SIGSEGV, &Action, 0);
+ sigaction(SIGBUS, &Action, 0);
+ sigaction(SIGINT, &Action, 0);
+ sigaction(SIGFPE, &Action, 0);
+}
+
//===----------------------------------------------------------------------===//
// Value Manipulation code
return SN->SlotNum;
}
-#define GET_CONST_VAL(TY, CLASS) \
- case Type::TY##TyID: Result.TY##Val = cast<CLASS>(CPV)->getValue(); break
+// Operations used by constant expr implementations...
+static GenericValue executeCastOperation(Value *Src, const Type *DestTy,
+ ExecutionContext &SF);
+static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+
static GenericValue getOperandValue(Value *V, ExecutionContext &SF) {
- if (ConstPoolVal *CPV = dyn_cast<ConstPoolVal>(V)) {
- GenericValue Result;
- switch (CPV->getType()->getPrimitiveID()) {
- GET_CONST_VAL(Bool , ConstPoolBool);
- GET_CONST_VAL(UByte , ConstPoolUInt);
- GET_CONST_VAL(SByte , ConstPoolSInt);
- GET_CONST_VAL(UShort , ConstPoolUInt);
- GET_CONST_VAL(Short , ConstPoolSInt);
- GET_CONST_VAL(UInt , ConstPoolUInt);
- GET_CONST_VAL(Int , ConstPoolSInt);
- GET_CONST_VAL(ULong , ConstPoolUInt);
- GET_CONST_VAL(Long , ConstPoolSInt);
- GET_CONST_VAL(Float , ConstPoolFP);
- GET_CONST_VAL(Double , ConstPoolFP);
- case Type::PointerTyID:
- if (isa<ConstPoolPointerNull>(CPV)) {
- Result.ULongVal = 0;
- } else if (ConstPoolPointerRef *CPR =dyn_cast<ConstPoolPointerRef>(CPV)) {
- assert(0 && "Not implemented!");
- } else {
- assert(0 && "Unknown constant pointer type!");
- }
- break;
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
+ switch (CE->getOpcode()) {
+ case Instruction::Cast:
+ return executeCastOperation(CE->getOperand(0), CE->getType(), SF);
+ case Instruction::GetElementPtr:
+ return TheEE->executeGEPOperation(CE->getOperand(0), CE->op_begin()+1,
+ CE->op_end(), SF);
+ case Instruction::Add:
+ return executeAddInst(getOperandValue(CE->getOperand(0), SF),
+ getOperandValue(CE->getOperand(1), SF),
+ CE->getType());
default:
- cout << "ERROR: Constant unimp for type: " << CPV->getType() << endl;
+ std::cerr << "Unhandled ConstantExpr: " << CE << "\n";
+ abort();
+ return GenericValue();
}
- return Result;
+ } else if (Constant *CPV = dyn_cast<Constant>(V)) {
+ return TheEE->getConstantValue(CPV);
} else if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
- GlobalAddress *Address =
- (GlobalAddress*)GV->getOrCreateAnnotation(GlobalAddressAID);
- GenericValue Result;
- Result.ULongVal = (uint64_t)(GenericValue*)Address->Ptr;
- return Result;
+ return PTOGV(TheEE->getPointerToGlobal(GV));
} else {
unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
+ unsigned OpSlot = getOperandSlot(V);
+ assert(TyP < SF.Values.size() &&
+ OpSlot < SF.Values[TyP].size() && "Value out of range!");
return SF.Values[TyP][getOperandSlot(V)];
}
}
static void printOperandInfo(Value *V, ExecutionContext &SF) {
- if (isa<ConstPoolVal>(V)) {
- cout << "Constant Pool Value\n";
+ if (isa<Constant>(V)) {
+ std::cout << "Constant Pool Value\n";
} else if (isa<GlobalValue>(V)) {
- cout << "Global Value\n";
+ std::cout << "Global Value\n";
} else {
unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
unsigned Slot = getOperandSlot(V);
- cout << "Value=" << (void*)V << " TypeID=" << TyP << " Slot=" << Slot
- << " Addr=" << &SF.Values[TyP][Slot] << " SF=" << &SF << endl;
+ std::cout << "Value=" << (void*)V << " TypeID=" << TyP << " Slot=" << Slot
+ << " Addr=" << &SF.Values[TyP][Slot] << " SF=" << &SF
+ << " Contents=0x";
+
+ const unsigned char *Buf = (const unsigned char*)&SF.Values[TyP][Slot];
+ for (unsigned i = 0; i < sizeof(GenericValue); ++i) {
+ unsigned char Cur = Buf[i];
+ std::cout << ( Cur >= 160?char((Cur>>4)+'A'-10):char((Cur>>4) + '0'))
+ << ((Cur&15) >= 10?char((Cur&15)+'A'-10):char((Cur&15) + '0'));
+ }
+ std::cout << "\n";
}
}
static void SetValue(Value *V, GenericValue Val, ExecutionContext &SF) {
unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
- //cout << "Setting value: " << &SF.Values[TyP][getOperandSlot(V)] << endl;
+ //std::cout << "Setting value: " << &SF.Values[TyP][getOperandSlot(V)]<< "\n";
SF.Values[TyP][getOperandSlot(V)] = Val;
}
//===----------------------------------------------------------------------===//
void Interpreter::initializeExecutionEngine() {
- AnnotationManager::registerAnnotationFactory(MethodInfoAID,
- &MethodInfo::Create);
- AnnotationManager::registerAnnotationFactory(GlobalAddressAID,
- &GlobalAddress::Create);
-}
-
-// InitializeMemory - Recursive function to apply a ConstPool value into the
-// specified memory location...
-//
-static void InitializeMemory(ConstPoolVal *Init, char *Addr) {
-#define INITIALIZE_MEMORY(TYID, CLASS, TY) \
- case Type::TYID##TyID: { \
- TY Tmp = cast<CLASS>(Init)->getValue(); \
- memcpy(Addr, &Tmp, sizeof(TY)); \
- } return
-
- switch (Init->getType()->getPrimitiveID()) {
- INITIALIZE_MEMORY(Bool , ConstPoolBool, bool);
- INITIALIZE_MEMORY(UByte , ConstPoolUInt, unsigned char);
- INITIALIZE_MEMORY(SByte , ConstPoolSInt, signed char);
- INITIALIZE_MEMORY(UShort , ConstPoolUInt, unsigned short);
- INITIALIZE_MEMORY(Short , ConstPoolSInt, signed short);
- INITIALIZE_MEMORY(UInt , ConstPoolUInt, unsigned int);
- INITIALIZE_MEMORY(Int , ConstPoolSInt, signed int);
- INITIALIZE_MEMORY(ULong , ConstPoolUInt, uint64_t);
- INITIALIZE_MEMORY(Long , ConstPoolSInt, int64_t);
- INITIALIZE_MEMORY(Float , ConstPoolFP , float);
- INITIALIZE_MEMORY(Double , ConstPoolFP , double);
-#undef INITIALIZE_MEMORY
-
- case Type::ArrayTyID: {
- ConstPoolArray *CPA = cast<ConstPoolArray>(Init);
- const vector<Use> &Val = CPA->getValues();
- unsigned ElementSize =
- TD.getTypeSize(cast<ArrayType>(CPA->getType())->getElementType());
- for (unsigned i = 0; i < Val.size(); ++i)
- InitializeMemory(cast<ConstPoolVal>(Val[i].get()), Addr+i*ElementSize);
- return;
- }
-
- case Type::StructTyID: {
- ConstPoolStruct *CPS = cast<ConstPoolStruct>(Init);
- const StructLayout *SL=TD.getStructLayout(cast<StructType>(CPS->getType()));
- const vector<Use> &Val = CPS->getValues();
- for (unsigned i = 0; i < Val.size(); ++i)
- InitializeMemory(cast<ConstPoolVal>(Val[i].get()),
- Addr+SL->MemberOffsets[i]);
- return;
- }
-
- case Type::PointerTyID:
- if (isa<ConstPoolPointerNull>(Init)) {
- *(void**)Addr = 0;
- } else if (ConstPoolPointerRef *CPR = dyn_cast<ConstPoolPointerRef>(Init)) {
- GlobalAddress *Address =
- (GlobalAddress*)CPR->getValue()->getOrCreateAnnotation(GlobalAddressAID);
- *(void**)Addr = (GenericValue*)Address->Ptr;
- } else {
- assert(0 && "Unknown Constant pointer type!");
- }
- return;
-
- default:
- cout << "Bad Type: " << Init->getType()->getDescription() << endl;
- assert(0 && "Unknown constant type to initialize memory with!");
- }
+ TheEE = this;
+ AnnotationManager::registerAnnotationFactory(FunctionInfoAID,
+ &FunctionInfo::Create);
+ initializeSignalHandlers();
}
-Annotation *GlobalAddress::Create(AnnotationID AID, const Annotable *O, void *){
- assert(AID == GlobalAddressAID);
-
- // This annotation will only be created on GlobalValue objects...
- GlobalValue *GVal = cast<GlobalValue>((Value*)O);
-
- if (isa<Method>(GVal)) {
- // The GlobalAddress object for a method is just a pointer to method itself.
- // Don't delete it when the annotation is gone though!
- return new GlobalAddress(GVal, false);
- }
-
- // Handle the case of a global variable...
- assert(isa<GlobalVariable>(GVal) &&
- "Global value found that isn't a method or global variable!");
- GlobalVariable *GV = cast<GlobalVariable>(GVal);
-
- // First off, we must allocate space for the global variable to point at...
- const Type *Ty = GV->getType()->getValueType(); // Type to be allocated
- unsigned NumElements = 1;
-
- if (isa<ArrayType>(Ty) && cast<ArrayType>(Ty)->isUnsized()) {
- assert(GV->hasInitializer() && "Const val must have an initializer!");
- // Allocating a unsized array type?
- Ty = cast<const ArrayType>(Ty)->getElementType(); // Get the actual type...
-
- // Get the number of elements being allocated by the array...
- NumElements =cast<ConstPoolArray>(GV->getInitializer())->getValues().size();
- }
-
- // Allocate enough memory to hold the type...
- void *Addr = malloc(NumElements * TD.getTypeSize(Ty));
- assert(Addr != 0 && "Null pointer returned by malloc!");
-
- // Initialize the memory if there is an initializer...
- if (GV->hasInitializer())
- InitializeMemory(GV->getInitializer(), (char*)Addr);
-
- return new GlobalAddress(Addr, true); // Simply invoke the ctor
-}
-
-
//===----------------------------------------------------------------------===//
// Binary Instruction Implementations
//===----------------------------------------------------------------------===//
case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; break
static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_BINARY_OPERATOR(+, UByte);
IMPLEMENT_BINARY_OPERATOR(+, Long);
IMPLEMENT_BINARY_OPERATOR(+, Float);
IMPLEMENT_BINARY_OPERATOR(+, Double);
- IMPLEMENT_BINARY_OPERATOR(+, Pointer);
default:
- cout << "Unhandled type for Add instruction: " << Ty << endl;
+ std::cout << "Unhandled type for Add instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_BINARY_OPERATOR(-, UByte);
IMPLEMENT_BINARY_OPERATOR(-, Long);
IMPLEMENT_BINARY_OPERATOR(-, Float);
IMPLEMENT_BINARY_OPERATOR(-, Double);
- IMPLEMENT_BINARY_OPERATOR(-, Pointer);
default:
- cout << "Unhandled type for Sub instruction: " << Ty << endl;
+ std::cout << "Unhandled type for Sub instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_BINARY_OPERATOR(*, UByte);
IMPLEMENT_BINARY_OPERATOR(*, Long);
IMPLEMENT_BINARY_OPERATOR(*, Float);
IMPLEMENT_BINARY_OPERATOR(*, Double);
- IMPLEMENT_BINARY_OPERATOR(*, Pointer);
default:
- cout << "Unhandled type for Mul instruction: " << Ty << endl;
+ std::cout << "Unhandled type for Mul instruction: " << Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_BINARY_OPERATOR(/, UByte);
IMPLEMENT_BINARY_OPERATOR(/, Long);
IMPLEMENT_BINARY_OPERATOR(/, Float);
IMPLEMENT_BINARY_OPERATOR(/, Double);
- IMPLEMENT_BINARY_OPERATOR(/, Pointer);
default:
- cout << "Unhandled type for Mul instruction: " << Ty << endl;
+ std::cout << "Unhandled type for Div instruction: " << *Ty << "\n";
+ abort();
+ }
+ return Dest;
+}
+
+static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getPrimitiveID()) {
+ IMPLEMENT_BINARY_OPERATOR(%, UByte);
+ IMPLEMENT_BINARY_OPERATOR(%, SByte);
+ IMPLEMENT_BINARY_OPERATOR(%, UShort);
+ IMPLEMENT_BINARY_OPERATOR(%, Short);
+ IMPLEMENT_BINARY_OPERATOR(%, UInt);
+ IMPLEMENT_BINARY_OPERATOR(%, Int);
+ IMPLEMENT_BINARY_OPERATOR(%, ULong);
+ IMPLEMENT_BINARY_OPERATOR(%, Long);
+ case Type::FloatTyID:
+ Dest.FloatVal = fmod(Src1.FloatVal, Src2.FloatVal);
+ break;
+ case Type::DoubleTyID:
+ Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal);
+ break;
+ default:
+ std::cout << "Unhandled type for Rem instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
+static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getPrimitiveID()) {
+ IMPLEMENT_BINARY_OPERATOR(&, Bool);
+ IMPLEMENT_BINARY_OPERATOR(&, UByte);
+ IMPLEMENT_BINARY_OPERATOR(&, SByte);
+ IMPLEMENT_BINARY_OPERATOR(&, UShort);
+ IMPLEMENT_BINARY_OPERATOR(&, Short);
+ IMPLEMENT_BINARY_OPERATOR(&, UInt);
+ IMPLEMENT_BINARY_OPERATOR(&, Int);
+ IMPLEMENT_BINARY_OPERATOR(&, ULong);
+ IMPLEMENT_BINARY_OPERATOR(&, Long);
+ default:
+ std::cout << "Unhandled type for And instruction: " << *Ty << "\n";
+ abort();
+ }
+ return Dest;
+}
+
+
+static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getPrimitiveID()) {
+ IMPLEMENT_BINARY_OPERATOR(|, Bool);
+ IMPLEMENT_BINARY_OPERATOR(|, UByte);
+ IMPLEMENT_BINARY_OPERATOR(|, SByte);
+ IMPLEMENT_BINARY_OPERATOR(|, UShort);
+ IMPLEMENT_BINARY_OPERATOR(|, Short);
+ IMPLEMENT_BINARY_OPERATOR(|, UInt);
+ IMPLEMENT_BINARY_OPERATOR(|, Int);
+ IMPLEMENT_BINARY_OPERATOR(|, ULong);
+ IMPLEMENT_BINARY_OPERATOR(|, Long);
+ default:
+ std::cout << "Unhandled type for Or instruction: " << *Ty << "\n";
+ abort();
+ }
+ return Dest;
+}
+
+
+static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
+ GenericValue Dest;
+ switch (Ty->getPrimitiveID()) {
+ IMPLEMENT_BINARY_OPERATOR(^, Bool);
+ IMPLEMENT_BINARY_OPERATOR(^, UByte);
+ IMPLEMENT_BINARY_OPERATOR(^, SByte);
+ IMPLEMENT_BINARY_OPERATOR(^, UShort);
+ IMPLEMENT_BINARY_OPERATOR(^, Short);
+ IMPLEMENT_BINARY_OPERATOR(^, UInt);
+ IMPLEMENT_BINARY_OPERATOR(^, Int);
+ IMPLEMENT_BINARY_OPERATOR(^, ULong);
+ IMPLEMENT_BINARY_OPERATOR(^, Long);
+ default:
+ std::cout << "Unhandled type for Xor instruction: " << *Ty << "\n";
+ abort();
+ }
+ return Dest;
+}
+
+
#define IMPLEMENT_SETCC(OP, TY) \
case Type::TY##TyID: Dest.BoolVal = Src1.TY##Val OP Src2.TY##Val; break
+// Handle pointers specially because they must be compared with only as much
+// width as the host has. We _do not_ want to be comparing 64 bit values when
+// running on a 32-bit target, otherwise the upper 32 bits might mess up
+// comparisons if they contain garbage.
+#define IMPLEMENT_POINTERSETCC(OP) \
+ case Type::PointerTyID: \
+ Dest.BoolVal = (void*)(intptr_t)Src1.PointerVal OP \
+ (void*)(intptr_t)Src2.PointerVal; break
+
static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SETCC(==, UByte);
IMPLEMENT_SETCC(==, Long);
IMPLEMENT_SETCC(==, Float);
IMPLEMENT_SETCC(==, Double);
- IMPLEMENT_SETCC(==, Pointer);
+ IMPLEMENT_POINTERSETCC(==);
default:
- cout << "Unhandled type for SetEQ instruction: " << Ty << endl;
+ std::cout << "Unhandled type for SetEQ instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SETCC(!=, UByte);
IMPLEMENT_SETCC(!=, Long);
IMPLEMENT_SETCC(!=, Float);
IMPLEMENT_SETCC(!=, Double);
- IMPLEMENT_SETCC(!=, Pointer);
+ IMPLEMENT_POINTERSETCC(!=);
+
default:
- cout << "Unhandled type for SetNE instruction: " << Ty << endl;
+ std::cout << "Unhandled type for SetNE instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SETCC(<=, UByte);
IMPLEMENT_SETCC(<=, Long);
IMPLEMENT_SETCC(<=, Float);
IMPLEMENT_SETCC(<=, Double);
- IMPLEMENT_SETCC(<=, Pointer);
+ IMPLEMENT_POINTERSETCC(<=);
default:
- cout << "Unhandled type for SetLE instruction: " << Ty << endl;
+ std::cout << "Unhandled type for SetLE instruction: " << Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SETCC(>=, UByte);
IMPLEMENT_SETCC(>=, Long);
IMPLEMENT_SETCC(>=, Float);
IMPLEMENT_SETCC(>=, Double);
- IMPLEMENT_SETCC(>=, Pointer);
+ IMPLEMENT_POINTERSETCC(>=);
default:
- cout << "Unhandled type for SetGE instruction: " << Ty << endl;
+ std::cout << "Unhandled type for SetGE instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SETCC(<, UByte);
IMPLEMENT_SETCC(<, Long);
IMPLEMENT_SETCC(<, Float);
IMPLEMENT_SETCC(<, Double);
- IMPLEMENT_SETCC(<, Pointer);
+ IMPLEMENT_POINTERSETCC(<);
default:
- cout << "Unhandled type for SetLT instruction: " << Ty << endl;
+ std::cout << "Unhandled type for SetLT instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty, ExecutionContext &SF) {
+ const Type *Ty) {
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SETCC(>, UByte);
IMPLEMENT_SETCC(>, Long);
IMPLEMENT_SETCC(>, Float);
IMPLEMENT_SETCC(>, Double);
- IMPLEMENT_SETCC(>, Pointer);
+ IMPLEMENT_POINTERSETCC(>);
default:
- cout << "Unhandled type for SetGT instruction: " << Ty << endl;
+ std::cout << "Unhandled type for SetGT instruction: " << *Ty << "\n";
+ abort();
}
return Dest;
}
-static void executeBinaryInst(BinaryOperator *I, ExecutionContext &SF) {
- const Type *Ty = I->getOperand(0)->getType();
- GenericValue Src1 = getOperandValue(I->getOperand(0), SF);
- GenericValue Src2 = getOperandValue(I->getOperand(1), SF);
+void Interpreter::visitBinaryOperator(BinaryOperator &I) {
+ ExecutionContext &SF = ECStack.back();
+ const Type *Ty = I.getOperand(0)->getType();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue R; // Result
- switch (I->getOpcode()) {
- case Instruction::Add: R = executeAddInst(Src1, Src2, Ty, SF); break;
- case Instruction::Sub: R = executeSubInst(Src1, Src2, Ty, SF); break;
- case Instruction::Mul: R = executeMulInst(Src1, Src2, Ty, SF); break;
- case Instruction::Div: R = executeDivInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetEQ: R = executeSetEQInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetNE: R = executeSetNEInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetLE: R = executeSetLEInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetGE: R = executeSetGEInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetLT: R = executeSetLTInst(Src1, Src2, Ty, SF); break;
- case Instruction::SetGT: R = executeSetGTInst(Src1, Src2, Ty, SF); break;
+ switch (I.getOpcode()) {
+ case Instruction::Add: R = executeAddInst (Src1, Src2, Ty); break;
+ case Instruction::Sub: R = executeSubInst (Src1, Src2, Ty); break;
+ case Instruction::Mul: R = executeMulInst (Src1, Src2, Ty); break;
+ case Instruction::Div: R = executeDivInst (Src1, Src2, Ty); break;
+ case Instruction::Rem: R = executeRemInst (Src1, Src2, Ty); break;
+ case Instruction::And: R = executeAndInst (Src1, Src2, Ty); break;
+ case Instruction::Or: R = executeOrInst (Src1, Src2, Ty); break;
+ case Instruction::Xor: R = executeXorInst (Src1, Src2, Ty); break;
+ case Instruction::SetEQ: R = executeSetEQInst(Src1, Src2, Ty); break;
+ case Instruction::SetNE: R = executeSetNEInst(Src1, Src2, Ty); break;
+ case Instruction::SetLE: R = executeSetLEInst(Src1, Src2, Ty); break;
+ case Instruction::SetGE: R = executeSetGEInst(Src1, Src2, Ty); break;
+ case Instruction::SetLT: R = executeSetLTInst(Src1, Src2, Ty); break;
+ case Instruction::SetGT: R = executeSetGTInst(Src1, Src2, Ty); break;
default:
- cout << "Don't know how to handle this binary operator!\n-->" << I;
+ std::cout << "Don't know how to handle this binary operator!\n-->" << I;
+ abort();
}
- SetValue(I, R, SF);
+ SetValue(&I, R, SF);
}
//===----------------------------------------------------------------------===//
// Terminator Instruction Implementations
//===----------------------------------------------------------------------===//
+// PerformExitStuff - Print out counters and profiling information if
+// applicable...
+void Interpreter::PerformExitStuff() {
+#ifdef PROFILE_STRUCTURE_FIELDS
+ // Print out structure field accounting information...
+ if (!FieldAccessCounts.empty()) {
+ CW << "Profile Field Access Counts:\n";
+ std::map<const StructType *, std::vector<unsigned> >::iterator
+ I = FieldAccessCounts.begin(), E = FieldAccessCounts.end();
+ for (; I != E; ++I) {
+ std::vector<unsigned> &OfC = I->second;
+ CW << " '" << (Value*)I->first << "'\t- Sum=";
+
+ unsigned Sum = 0;
+ for (unsigned i = 0; i < OfC.size(); ++i)
+ Sum += OfC[i];
+ CW << Sum << " - ";
+
+ for (unsigned i = 0; i < OfC.size(); ++i) {
+ if (i) CW << ", ";
+ CW << OfC[i];
+ }
+ CW << "\n";
+ }
+ CW << "\n";
+
+ CW << "Profile Field Access Percentages:\n";
+ std::cout.precision(3);
+ for (I = FieldAccessCounts.begin(); I != E; ++I) {
+ std::vector<unsigned> &OfC = I->second;
+ unsigned Sum = 0;
+ for (unsigned i = 0; i < OfC.size(); ++i)
+ Sum += OfC[i];
+
+ CW << " '" << (Value*)I->first << "'\t- ";
+ for (unsigned i = 0; i < OfC.size(); ++i) {
+ if (i) CW << ", ";
+ CW << double(OfC[i])/Sum;
+ }
+ CW << "\n";
+ }
+ CW << "\n";
+
+ FieldAccessCounts.clear();
+ }
+#endif
+}
+
void Interpreter::exitCalled(GenericValue GV) {
- cout << "Program returned ";
- print(Type::IntTy, GV);
- cout << " via 'void exit(int)'\n";
+ if (!QuietMode) {
+ std::cout << "Program returned ";
+ print(Type::IntTy, GV);
+ std::cout << " via 'void exit(int)'\n";
+ }
ExitCode = GV.SByteVal;
ECStack.clear();
}
-void Interpreter::executeRetInst(ReturnInst *I, ExecutionContext &SF) {
+void Interpreter::visitReturnInst(ReturnInst &I) {
+ ExecutionContext &SF = ECStack.back();
const Type *RetTy = 0;
GenericValue Result;
// Save away the return value... (if we are not 'ret void')
- if (I->getNumOperands()) {
- RetTy = I->getReturnValue()->getType();
- Result = getOperandValue(I->getReturnValue(), SF);
+ if (I.getNumOperands()) {
+ RetTy = I.getReturnValue()->getType();
+ Result = getOperandValue(I.getReturnValue(), SF);
}
// Save previously executing meth
- const Method *M = ECStack.back().CurMethod;
+ const Function *M = ECStack.back().CurFunction;
// Pop the current stack frame... this invalidates SF
ECStack.pop_back();
if (ECStack.empty()) { // Finished main. Put result into exit code...
if (RetTy) { // Nonvoid return type?
- cout << "Method " << M->getType() << " \"" << M->getName()
- << "\" returned ";
- print(RetTy, Result);
- cout << endl;
+ if (!QuietMode) {
+ CW << "Function " << M->getType() << " \"" << M->getName()
+ << "\" returned ";
+ print(RetTy, Result);
+ std::cout << "\n";
+ }
if (RetTy->isIntegral())
- ExitCode = Result.SByteVal; // Capture the exit code of the program
+ ExitCode = Result.IntVal; // Capture the exit code of the program
} else {
ExitCode = 0;
}
SetValue(NewSF.Caller, Result, NewSF);
NewSF.Caller = 0; // We returned from the call...
- } else {
+ } else if (!QuietMode) {
// This must be a function that is executing because of a user 'call'
// instruction.
- cout << "Method " << M->getType() << " \"" << M->getName()
- << "\" returned ";
+ CW << "Function " << M->getType() << " \"" << M->getName()
+ << "\" returned ";
print(RetTy, Result);
- cout << endl;
+ std::cout << "\n";
}
}
-void Interpreter::executeBrInst(BranchInst *I, ExecutionContext &SF) {
- SF.PrevBB = SF.CurBB; // Update PrevBB so that PHI nodes work...
+void Interpreter::visitBranchInst(BranchInst &I) {
+ ExecutionContext &SF = ECStack.back();
BasicBlock *Dest;
- Dest = I->getSuccessor(0); // Uncond branches have a fixed dest...
- if (!I->isUnconditional()) {
- if (getOperandValue(I->getCondition(), SF).BoolVal == 0) // If false cond...
- Dest = I->getSuccessor(1);
+ Dest = I.getSuccessor(0); // Uncond branches have a fixed dest...
+ if (!I.isUnconditional()) {
+ Value *Cond = I.getCondition();
+ if (getOperandValue(Cond, SF).BoolVal == 0) // If false cond...
+ Dest = I.getSuccessor(1);
}
+ SwitchToNewBasicBlock(Dest, SF);
+}
+
+void Interpreter::visitSwitchInst(SwitchInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue CondVal = getOperandValue(I.getOperand(0), SF);
+ const Type *ElTy = I.getOperand(0)->getType();
+
+ // Check to see if any of the cases match...
+ BasicBlock *Dest = 0;
+ for (unsigned i = 2, e = I.getNumOperands(); i != e; i += 2)
+ if (executeSetEQInst(CondVal,
+ getOperandValue(I.getOperand(i), SF), ElTy).BoolVal) {
+ Dest = cast<BasicBlock>(I.getOperand(i+1));
+ break;
+ }
+
+ if (!Dest) Dest = I.getDefaultDest(); // No cases matched: use default
+ SwitchToNewBasicBlock(Dest, SF);
+}
+
+// SwitchToNewBasicBlock - This method is used to jump to a new basic block.
+// This function handles the actual updating of block and instruction iterators
+// as well as execution of all of the PHI nodes in the destination block.
+//
+// This method does this because all of the PHI nodes must be executed
+// atomically, reading their inputs before any of the results are updated. Not
+// doing this can cause problems if the PHI nodes depend on other PHI nodes for
+// their inputs. If the input PHI node is updated before it is read, incorrect
+// results can happen. Thus we use a two phase approach.
+//
+void Interpreter::SwitchToNewBasicBlock(BasicBlock *Dest, ExecutionContext &SF){
+ BasicBlock *PrevBB = SF.CurBB; // Remember where we came from...
SF.CurBB = Dest; // Update CurBB to branch destination
SF.CurInst = SF.CurBB->begin(); // Update new instruction ptr...
+
+ if (!isa<PHINode>(SF.CurInst)) return; // Nothing fancy to do
+
+ // Loop over all of the PHI nodes in the current block, reading their inputs.
+ std::vector<GenericValue> ResultValues;
+
+ for (; PHINode *PN = dyn_cast<PHINode>(SF.CurInst); ++SF.CurInst) {
+ if (Trace) CW << "Run:" << PN;
+
+ // Search for the value corresponding to this previous bb...
+ int i = PN->getBasicBlockIndex(PrevBB);
+ assert(i != -1 && "PHINode doesn't contain entry for predecessor??");
+ Value *IncomingValue = PN->getIncomingValue(i);
+
+ // Save the incoming value for this PHI node...
+ ResultValues.push_back(getOperandValue(IncomingValue, SF));
+ }
+
+ // Now loop over all of the PHI nodes setting their values...
+ SF.CurInst = SF.CurBB->begin();
+ for (unsigned i = 0; PHINode *PN = dyn_cast<PHINode>(SF.CurInst);
+ ++SF.CurInst, ++i)
+ SetValue(PN, ResultValues[i], SF);
}
+
//===----------------------------------------------------------------------===//
// Memory Instruction Implementations
//===----------------------------------------------------------------------===//
-void Interpreter::executeAllocInst(AllocationInst *I, ExecutionContext &SF) {
- const Type *Ty = I->getType()->getValueType(); // Type to be allocated
- unsigned NumElements = 1;
+void Interpreter::visitAllocationInst(AllocationInst &I) {
+ ExecutionContext &SF = ECStack.back();
- if (I->getNumOperands()) { // Allocating a unsized array type?
- assert(isa<ArrayType>(Ty) && cast<const ArrayType>(Ty)->isUnsized() &&
- "Allocation inst with size operand for !unsized array type???");
- Ty = cast<const ArrayType>(Ty)->getElementType(); // Get the actual type...
+ const Type *Ty = I.getType()->getElementType(); // Type to be allocated
- // Get the number of elements being allocated by the array...
- GenericValue NumEl = getOperandValue(I->getOperand(0), SF);
- NumElements = NumEl.UIntVal;
- }
+ // Get the number of elements being allocated by the array...
+ unsigned NumElements = getOperandValue(I.getOperand(0), SF).UIntVal;
// Allocate enough memory to hold the type...
- GenericValue Result;
- Result.ULongVal = (uint64_t)malloc(NumElements * TD.getTypeSize(Ty));
- assert(Result.ULongVal != 0 && "Null pointer returned by malloc!");
- SetValue(I, Result, SF);
+ // FIXME: Don't use CALLOC, use a tainted malloc.
+ void *Memory = calloc(NumElements, TD.getTypeSize(Ty));
- if (I->getOpcode() == Instruction::Alloca) {
- // TODO: FIXME: alloca should keep track of memory to free it later...
- }
+ GenericValue Result = PTOGV(Memory);
+ assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");
+ SetValue(&I, Result, SF);
+
+ if (I.getOpcode() == Instruction::Alloca)
+ ECStack.back().Allocas.add(Memory);
}
-static void executeFreeInst(FreeInst *I, ExecutionContext &SF) {
- assert(I->getOperand(0)->getType()->isPointerType() && "Freeing nonptr?");
- GenericValue Value = getOperandValue(I->getOperand(0), SF);
+void Interpreter::visitFreeInst(FreeInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ assert(isa<PointerType>(I.getOperand(0)->getType()) && "Freeing nonptr?");
+ GenericValue Value = getOperandValue(I.getOperand(0), SF);
// TODO: Check to make sure memory is allocated
- free((void*)Value.ULongVal); // Free memory
+ free(GVTOP(Value)); // Free memory
}
-static void executeLoadInst(LoadInst *I, ExecutionContext &SF) {
- assert(I->getNumOperands() == 1 && "NI!");
- GenericValue *Ptr =
- (GenericValue*)getOperandValue(I->getPtrOperand(), SF).ULongVal;
- GenericValue Result;
- switch (I->getType()->getPrimitiveID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Result.SByteVal = Ptr->SByteVal; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Result.ShortVal = Ptr->ShortVal; break;
- case Type::UIntTyID:
- case Type::IntTyID: Result.IntVal = Ptr->IntVal; break;
- case Type::ULongTyID:
- case Type::LongTyID:
- case Type::PointerTyID: Result.ULongVal = Ptr->ULongVal; break;
- case Type::FloatTyID: Result.FloatVal = Ptr->FloatVal; break;
- case Type::DoubleTyID: Result.DoubleVal = Ptr->DoubleVal; break;
- default:
- cout << "Cannot load value of type " << I->getType() << "!\n";
+// getElementOffset - The workhorse for getelementptr.
+//
+GenericValue Interpreter::executeGEPOperation(Value *Ptr, User::op_iterator I,
+ User::op_iterator E,
+ ExecutionContext &SF) {
+ assert(isa<PointerType>(Ptr->getType()) &&
+ "Cannot getElementOffset of a nonpointer type!");
+
+ PointerTy Total = 0;
+ const Type *Ty = Ptr->getType();
+
+ for (; I != E; ++I) {
+ if (const StructType *STy = dyn_cast<StructType>(Ty)) {
+ const StructLayout *SLO = TD.getStructLayout(STy);
+
+ // Indicies must be ubyte constants...
+ const ConstantUInt *CPU = cast<ConstantUInt>(*I);
+ assert(CPU->getType() == Type::UByteTy);
+ unsigned Index = CPU->getValue();
+
+#ifdef PROFILE_STRUCTURE_FIELDS
+ if (ProfileStructureFields) {
+ // Do accounting for this field...
+ std::vector<unsigned> &OfC = FieldAccessCounts[STy];
+ if (OfC.size() == 0) OfC.resize(STy->getElementTypes().size());
+ OfC[Index]++;
+ }
+#endif
+
+ Total += SLO->MemberOffsets[Index];
+ Ty = STy->getElementTypes()[Index];
+ } else if (const SequentialType *ST = cast<SequentialType>(Ty)) {
+
+ // Get the index number for the array... which must be long type...
+ assert((*I)->getType() == Type::LongTy);
+ unsigned Idx = getOperandValue(*I, SF).LongVal;
+ if (const ArrayType *AT = dyn_cast<ArrayType>(ST))
+ if (Idx >= AT->getNumElements() && ArrayChecksEnabled) {
+ std::cerr << "Out of range memory access to element #" << Idx
+ << " of a " << AT->getNumElements() << " element array."
+ << " Subscript #" << *I << "\n";
+ // Get outta here!!!
+ siglongjmp(SignalRecoverBuffer, SIGTRAP);
+ }
+
+ Ty = ST->getElementType();
+ unsigned Size = TD.getTypeSize(Ty);
+ Total += Size*Idx;
+ }
}
- SetValue(I, Result, SF);
+ GenericValue Result;
+ Result.PointerVal = getOperandValue(Ptr, SF).PointerVal + Total;
+ return Result;
}
-static void executeStoreInst(StoreInst *I, ExecutionContext &SF) {
- GenericValue *Ptr =
- (GenericValue *)getOperandValue(I->getPtrOperand(), SF).ULongVal;
- GenericValue Val = getOperandValue(I->getOperand(0), SF);
- assert(I->getNumOperands() == 2 && "NI!");
+void Interpreter::visitGetElementPtrInst(GetElementPtrInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, TheEE->executeGEPOperation(I.getPointerOperand(),
+ I.idx_begin(), I.idx_end(), SF), SF);
+}
- switch (I->getOperand(0)->getType()->getPrimitiveID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Ptr->SByteVal = Val.SByteVal; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Ptr->ShortVal = Val.ShortVal; break;
- case Type::UIntTyID:
- case Type::IntTyID: Ptr->IntVal = Val.IntVal; break;
- case Type::ULongTyID:
- case Type::LongTyID:
- case Type::PointerTyID: Ptr->LongVal = Val.LongVal; break;
- case Type::FloatTyID: Ptr->FloatVal = Val.FloatVal; break;
- case Type::DoubleTyID: Ptr->DoubleVal = Val.DoubleVal; break;
- default:
- cout << "Cannot store value of type " << I->getType() << "!\n";
- }
+void Interpreter::visitLoadInst(LoadInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
+ GenericValue *Ptr = (GenericValue*)GVTOP(SRC);
+ GenericValue Result = LoadValueFromMemory(Ptr, I.getType());
+ SetValue(&I, Result, SF);
+}
+
+void Interpreter::visitStoreInst(StoreInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue Val = getOperandValue(I.getOperand(0), SF);
+ GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
+ StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC),
+ I.getOperand(0)->getType());
}
+
//===----------------------------------------------------------------------===//
// Miscellaneous Instruction Implementations
//===----------------------------------------------------------------------===//
-void Interpreter::executeCallInst(CallInst *I, ExecutionContext &SF) {
- ECStack.back().Caller = I;
- vector<GenericValue> ArgVals;
- ArgVals.reserve(I->getNumOperands()-1);
- for (unsigned i = 1; i < I->getNumOperands(); ++i)
- ArgVals.push_back(getOperandValue(I->getOperand(i), SF));
-
- callMethod(I->getCalledMethod(), ArgVals);
-}
-
-static void executePHINode(PHINode *I, ExecutionContext &SF) {
- BasicBlock *PrevBB = SF.PrevBB;
- Value *IncomingValue = 0;
-
- // Search for the value corresponding to this previous bb...
- for (unsigned i = I->getNumIncomingValues(); i > 0;) {
- if (I->getIncomingBlock(--i) == PrevBB) {
- IncomingValue = I->getIncomingValue(i);
- break;
+void Interpreter::visitCallInst(CallInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SF.Caller = &I;
+ std::vector<GenericValue> ArgVals;
+ ArgVals.reserve(I.getNumOperands()-1);
+ for (unsigned i = 1; i < I.getNumOperands(); ++i) {
+ ArgVals.push_back(getOperandValue(I.getOperand(i), SF));
+ // Promote all integral types whose size is < sizeof(int) into ints. We do
+ // this by zero or sign extending the value as appropriate according to the
+ // source type.
+ if (I.getOperand(i)->getType()->isIntegral() &&
+ I.getOperand(i)->getType()->getPrimitiveSize() < 4) {
+ const Type *Ty = I.getOperand(i)->getType();
+ if (Ty == Type::ShortTy)
+ ArgVals.back().IntVal = ArgVals.back().ShortVal;
+ else if (Ty == Type::UShortTy)
+ ArgVals.back().UIntVal = ArgVals.back().UShortVal;
+ else if (Ty == Type::SByteTy)
+ ArgVals.back().IntVal = ArgVals.back().SByteVal;
+ else if (Ty == Type::UByteTy)
+ ArgVals.back().UIntVal = ArgVals.back().UByteVal;
+ else if (Ty == Type::BoolTy)
+ ArgVals.back().UIntVal = ArgVals.back().BoolVal;
+ else
+ assert(0 && "Unknown type!");
}
}
- assert(IncomingValue && "No PHI node predecessor for current PrevBB!");
- // Found the value, set as the result...
- SetValue(I, getOperandValue(IncomingValue, SF), SF);
+ // To handle indirect calls, we must get the pointer value from the argument
+ // and treat it as a function pointer.
+ GenericValue SRC = getOperandValue(I.getCalledValue(), SF);
+ callFunction((Function*)GVTOP(SRC), ArgVals);
}
#define IMPLEMENT_SHIFT(OP, TY) \
case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.UByteVal; break
-static void executeShlInst(ShiftInst *I, ExecutionContext &SF) {
- const Type *Ty = I->getOperand(0)->getType();
- GenericValue Src1 = getOperandValue(I->getOperand(0), SF);
- GenericValue Src2 = getOperandValue(I->getOperand(1), SF);
+void Interpreter::visitShl(ShiftInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ const Type *Ty = I.getOperand(0)->getType();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SHIFT(<<, ULong);
IMPLEMENT_SHIFT(<<, Long);
default:
- cout << "Unhandled type for Shl instruction: " << Ty << endl;
+ std::cout << "Unhandled type for Shl instruction: " << *Ty << "\n";
}
- SetValue(I, Dest, SF);
+ SetValue(&I, Dest, SF);
}
-static void executeShrInst(ShiftInst *I, ExecutionContext &SF) {
- const Type *Ty = I->getOperand(0)->getType();
- GenericValue Src1 = getOperandValue(I->getOperand(0), SF);
- GenericValue Src2 = getOperandValue(I->getOperand(1), SF);
+void Interpreter::visitShr(ShiftInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ const Type *Ty = I.getOperand(0)->getType();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SHIFT(>>, ULong);
IMPLEMENT_SHIFT(>>, Long);
default:
- cout << "Unhandled type for Shr instruction: " << Ty << endl;
+ std::cout << "Unhandled type for Shr instruction: " << *Ty << "\n";
+ abort();
}
- SetValue(I, Dest, SF);
+ SetValue(&I, Dest, SF);
}
#define IMPLEMENT_CAST(DTY, DCTY, STY) \
- case Type::STY##TyID: Dest.DTY##Val = (DCTY)Src.STY##Val; break;
+ case Type::STY##TyID: Dest.DTY##Val = DCTY Src.STY##Val; break;
#define IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY) \
case Type::DESTTY##TyID: \
switch (SrcTy->getPrimitiveID()) { \
+ IMPLEMENT_CAST(DESTTY, DESTCTY, Bool); \
IMPLEMENT_CAST(DESTTY, DESTCTY, UByte); \
IMPLEMENT_CAST(DESTTY, DESTCTY, SByte); \
IMPLEMENT_CAST(DESTTY, DESTCTY, UShort); \
IMPLEMENT_CAST(DESTTY, DESTCTY, Double)
#define IMPLEMENT_CAST_CASE_END() \
- default: cout << "Unhandled cast: " << SrcTy << " to " << Ty << endl; \
- break; \
+ default: std::cout << "Unhandled cast: " << SrcTy << " to " << Ty << "\n"; \
+ abort(); \
} \
break
IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY); \
IMPLEMENT_CAST_CASE_END()
-static void executeCastInst(CastInst *I, ExecutionContext &SF) {
- const Type *Ty = I->getType();
- const Type *SrcTy = I->getOperand(0)->getType();
- GenericValue Src = getOperandValue(I->getOperand(0), SF);
- GenericValue Dest;
+static GenericValue executeCastOperation(Value *SrcVal, const Type *Ty,
+ ExecutionContext &SF) {
+ const Type *SrcTy = SrcVal->getType();
+ GenericValue Dest, Src = getOperandValue(SrcVal, SF);
switch (Ty->getPrimitiveID()) {
- IMPLEMENT_CAST_CASE(UByte , unsigned char);
- IMPLEMENT_CAST_CASE(SByte , signed char);
- IMPLEMENT_CAST_CASE(UShort, unsigned short);
- IMPLEMENT_CAST_CASE(Short , signed char);
- IMPLEMENT_CAST_CASE(UInt , unsigned int );
- IMPLEMENT_CAST_CASE(Int , signed int );
- IMPLEMENT_CAST_CASE(ULong , uint64_t );
- IMPLEMENT_CAST_CASE(Long , int64_t );
- IMPLEMENT_CAST_CASE(Pointer, uint64_t);
- IMPLEMENT_CAST_CASE(Float , float);
- IMPLEMENT_CAST_CASE(Double, double);
+ IMPLEMENT_CAST_CASE(UByte , (unsigned char));
+ IMPLEMENT_CAST_CASE(SByte , ( signed char));
+ IMPLEMENT_CAST_CASE(UShort , (unsigned short));
+ IMPLEMENT_CAST_CASE(Short , ( signed short));
+ IMPLEMENT_CAST_CASE(UInt , (unsigned int ));
+ IMPLEMENT_CAST_CASE(Int , ( signed int ));
+ IMPLEMENT_CAST_CASE(ULong , (uint64_t));
+ IMPLEMENT_CAST_CASE(Long , ( int64_t));
+ IMPLEMENT_CAST_CASE(Pointer, (PointerTy));
+ IMPLEMENT_CAST_CASE(Float , (float));
+ IMPLEMENT_CAST_CASE(Double , (double));
+ IMPLEMENT_CAST_CASE(Bool , (bool));
default:
- cout << "Unhandled dest type for cast instruction: " << Ty << endl;
+ std::cout << "Unhandled dest type for cast instruction: " << *Ty << "\n";
+ abort();
}
- SetValue(I, Dest, SF);
+
+ return Dest;
}
+void Interpreter::visitCastInst(CastInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(&I, executeCastOperation(I.getOperand(0), I.getType(), SF), SF);
+}
+
+void Interpreter::visitVarArgInst(VarArgInst &I) {
+ ExecutionContext &SF = ECStack.back();
+
+ // Get the pointer to the valist element. LLI treats the valist in memory as
+ // an integer.
+ GenericValue VAListPtr = getOperandValue(I.getOperand(0), SF);
+
+ // Load the pointer
+ GenericValue VAList =
+ TheEE->LoadValueFromMemory((GenericValue *)GVTOP(VAListPtr), Type::UIntTy);
+
+ unsigned Argument = VAList.IntVal++;
+
+ // Update the valist to point to the next argument...
+ TheEE->StoreValueToMemory(VAList, (GenericValue *)GVTOP(VAListPtr),
+ Type::UIntTy);
+ // Set the value...
+ assert(Argument < SF.VarArgs.size() &&
+ "Accessing past the last vararg argument!");
+ SetValue(&I, SF.VarArgs[Argument], SF);
+}
//===----------------------------------------------------------------------===//
// Dispatch and Execution Code
//===----------------------------------------------------------------------===//
-MethodInfo::MethodInfo(Method *M) : Annotation(MethodInfoAID) {
- // Assign slot numbers to the method arguments...
- const Method::ArgumentListType &ArgList = M->getArgumentList();
- for (Method::ArgumentListType::const_iterator AI = ArgList.begin(),
- AE = ArgList.end(); AI != AE; ++AI) {
- MethodArgument *MA = *AI;
- MA->addAnnotation(new SlotNumber(getValueSlot(MA)));
- }
+FunctionInfo::FunctionInfo(Function *F) : Annotation(FunctionInfoAID) {
+ // Assign slot numbers to the function arguments...
+ for (Function::const_aiterator AI = F->abegin(), E = F->aend(); AI != E; ++AI)
+ AI->addAnnotation(new SlotNumber(getValueSlot(AI)));
// Iterate over all of the instructions...
unsigned InstNum = 0;
- for (Method::inst_iterator MI = M->inst_begin(), ME = M->inst_end();
- MI != ME; ++MI) {
- Instruction *I = *MI; // For each instruction...
- I->addAnnotation(new InstNumber(++InstNum, getValueSlot(I))); // Add Annote
- }
+ for (Function::iterator BB = F->begin(), BBE = F->end(); BB != BBE; ++BB)
+ for (BasicBlock::iterator II = BB->begin(), IE = BB->end(); II != IE; ++II)
+ // For each instruction... Add Annote
+ II->addAnnotation(new InstNumber(++InstNum, getValueSlot(II)));
}
-unsigned MethodInfo::getValueSlot(const Value *V) {
+unsigned FunctionInfo::getValueSlot(const Value *V) {
unsigned Plane = V->getType()->getUniqueID();
if (Plane >= NumPlaneElements.size())
NumPlaneElements.resize(Plane+1, 0);
//===----------------------------------------------------------------------===//
-// callMethod - Execute the specified method...
+// callFunction - Execute the specified function...
//
-void Interpreter::callMethod(Method *M, const vector<GenericValue> &ArgVals) {
+void Interpreter::callFunction(Function *F,
+ const std::vector<GenericValue> &ArgVals) {
assert((ECStack.empty() || ECStack.back().Caller == 0 ||
ECStack.back().Caller->getNumOperands()-1 == ArgVals.size()) &&
"Incorrect number of arguments passed into function call!");
- if (M->isExternal()) {
- callExternalMethod(M, ArgVals);
+ if (F->isExternal()) {
+ GenericValue Result = callExternalFunction(F, ArgVals);
+ const Type *RetTy = F->getReturnType();
+
+ // Copy the result back into the result variable if we are not returning
+ // void.
+ if (RetTy != Type::VoidTy) {
+ if (!ECStack.empty() && ECStack.back().Caller) {
+ ExecutionContext &SF = ECStack.back();
+ SetValue(SF.Caller, Result, SF);
+
+ SF.Caller = 0; // We returned from the call...
+ } else if (!QuietMode) {
+ // print it.
+ CW << "Function " << F->getType() << " \"" << F->getName()
+ << "\" returned ";
+ print(RetTy, Result);
+ std::cout << "\n";
+
+ if (RetTy->isIntegral())
+ ExitCode = Result.IntVal; // Capture the exit code of the program
+ }
+ }
+
return;
}
- // Process the method, assigning instruction numbers to the instructions in
- // the method. Also calculate the number of values for each type slot active.
+ // Process the function, assigning instruction numbers to the instructions in
+ // the function. Also calculate the number of values for each type slot
+ // active.
//
- MethodInfo *MethInfo = (MethodInfo*)M->getOrCreateAnnotation(MethodInfoAID);
+ FunctionInfo *FuncInfo =
+ (FunctionInfo*)F->getOrCreateAnnotation(FunctionInfoAID);
ECStack.push_back(ExecutionContext()); // Make a new stack frame...
ExecutionContext &StackFrame = ECStack.back(); // Fill it in...
- StackFrame.CurMethod = M;
- StackFrame.CurBB = M->front();
+ StackFrame.CurFunction = F;
+ StackFrame.CurBB = F->begin();
StackFrame.CurInst = StackFrame.CurBB->begin();
- StackFrame.MethInfo = MethInfo;
+ StackFrame.FuncInfo = FuncInfo;
// Initialize the values to nothing...
- StackFrame.Values.resize(MethInfo->NumPlaneElements.size());
- for (unsigned i = 0; i < MethInfo->NumPlaneElements.size(); ++i)
- StackFrame.Values[i].resize(MethInfo->NumPlaneElements[i]);
+ StackFrame.Values.resize(FuncInfo->NumPlaneElements.size());
+ for (unsigned i = 0; i < FuncInfo->NumPlaneElements.size(); ++i) {
+ StackFrame.Values[i].resize(FuncInfo->NumPlaneElements[i]);
+
+ // Taint the initial values of stuff
+ memset(&StackFrame.Values[i][0], 42,
+ FuncInfo->NumPlaneElements[i]*sizeof(GenericValue));
+ }
- StackFrame.PrevBB = 0; // No previous BB for PHI nodes...
+ // Run through the function arguments and initialize their values...
+ assert((ArgVals.size() == F->asize() ||
+ (ArgVals.size() > F->asize() && F->getFunctionType()->isVarArg())) &&
+ "Invalid number of values passed to function invocation!");
- // Run through the method arguments and initialize their values...
- assert(ArgVals.size() == M->getArgumentList().size() &&
- "Invalid number of values passed to method invocation!");
+ // Handle non-varargs arguments...
unsigned i = 0;
- for (Method::ArgumentListType::iterator MI = M->getArgumentList().begin(),
- ME = M->getArgumentList().end(); MI != ME; ++MI, ++i) {
- SetValue(*MI, ArgVals[i], StackFrame);
- }
+ for (Function::aiterator AI = F->abegin(), E = F->aend(); AI != E; ++AI, ++i)
+ SetValue(AI, ArgVals[i], StackFrame);
+
+ // Handle varargs arguments...
+ StackFrame.VarArgs.assign(ArgVals.begin()+i, ArgVals.end());
}
// executeInstruction - Interpret a single instruction, increment the "PC", and
assert(!ECStack.empty() && "No program running, cannot execute inst!");
ExecutionContext &SF = ECStack.back(); // Current stack frame
- Instruction *I = *SF.CurInst++; // Increment before execute
+ Instruction &I = *SF.CurInst++; // Increment before execute
- if (Trace)
- cout << "Run:" << I;
+ if (Trace) CW << "Run:" << I;
- if (I->isBinaryOp()) {
- executeBinaryInst((BinaryOperator*)I, SF);
- } else {
- switch (I->getOpcode()) {
- // Terminators
- case Instruction::Ret: executeRetInst ((ReturnInst*)I, SF); break;
- case Instruction::Br: executeBrInst ((BranchInst*)I, SF); break;
- // Memory Instructions
- case Instruction::Alloca:
- case Instruction::Malloc: executeAllocInst ((AllocationInst*)I, SF); break;
- case Instruction::Free: executeFreeInst (cast<FreeInst> (I), SF); break;
- case Instruction::Load: executeLoadInst (cast<LoadInst> (I), SF); break;
- case Instruction::Store: executeStoreInst (cast<StoreInst>(I), SF); break;
-
- // Miscellaneous Instructions
- case Instruction::Call: executeCallInst (cast<CallInst> (I), SF); break;
- case Instruction::PHINode: executePHINode (cast<PHINode> (I), SF); break;
- case Instruction::Shl: executeShlInst (cast<ShiftInst>(I), SF); break;
- case Instruction::Shr: executeShrInst (cast<ShiftInst>(I), SF); break;
- case Instruction::Cast: executeCastInst (cast<CastInst> (I), SF); break;
- default:
- cout << "Don't know how to execute this instruction!\n-->" << I;
+ // Track the number of dynamic instructions executed.
+ ++NumDynamicInsts;
+
+ // Set a sigsetjmp buffer so that we can recover if an error happens during
+ // instruction execution...
+ //
+ if (int SigNo = sigsetjmp(SignalRecoverBuffer, 1)) {
+ --SF.CurInst; // Back up to erroring instruction
+ if (SigNo != SIGINT) {
+ std::cout << "EXCEPTION OCCURRED [" << strsignal(SigNo) << "]:\n";
+ printStackTrace();
+ // If -abort-on-exception was specified, terminate LLI instead of trying
+ // to debug it.
+ //
+ if (AbortOnExceptions) exit(1);
+ } else if (SigNo == SIGINT) {
+ std::cout << "CTRL-C Detected, execution halted.\n";
}
+ InInstruction = false;
+ return true;
}
+
+ InInstruction = true;
+ visit(I); // Dispatch to one of the visit* methods...
+ InInstruction = false;
// Reset the current frame location to the top of stack
CurFrame = ECStack.size()-1;
if (CurFrame == -1) return false; // No breakpoint if no code
// Return true if there is a breakpoint annotation on the instruction...
- return (*ECStack[CurFrame].CurInst)->getAnnotation(BreakpointAID) != 0;
+ return ECStack[CurFrame].CurInst->getAnnotation(BreakpointAID) != 0;
}
void Interpreter::stepInstruction() { // Do the 'step' command
if (ECStack.empty()) {
- cout << "Error: no program running, cannot step!\n";
+ std::cout << "Error: no program running, cannot step!\n";
return;
}
// --- UI Stuff...
void Interpreter::nextInstruction() { // Do the 'next' command
if (ECStack.empty()) {
- cout << "Error: no program running, cannot 'next'!\n";
+ std::cout << "Error: no program running, cannot 'next'!\n";
return;
}
// If this is a call instruction, step over the call instruction...
// TODO: ICALL, CALL WITH, ...
- if ((*ECStack.back().CurInst)->getOpcode() == Instruction::Call) {
+ if (ECStack.back().CurInst->getOpcode() == Instruction::Call) {
+ unsigned StackSize = ECStack.size();
// Step into the function...
if (executeInstruction()) {
// Hit a breakpoint, print current instruction, then return to user...
- cout << "Breakpoint hit!\n";
+ std::cout << "Breakpoint hit!\n";
printCurrentInstruction();
return;
}
- // Finish executing the function...
- finish();
+ // If we we able to step into the function, finish it now. We might not be
+ // able the step into a function, if it's external for example.
+ if (ECStack.size() != StackSize)
+ finish(); // Finish executing the function...
+ else
+ printCurrentInstruction();
+
} else {
// Normal instruction, just step...
stepInstruction();
void Interpreter::run() {
if (ECStack.empty()) {
- cout << "Error: no program running, cannot run!\n";
+ std::cout << "Error: no program running, cannot run!\n";
return;
}
HitBreakpoint = executeInstruction();
}
- if (HitBreakpoint) {
- cout << "Breakpoint hit!\n";
- }
+ if (HitBreakpoint)
+ std::cout << "Breakpoint hit!\n";
+
// Print the next instruction to execute...
printCurrentInstruction();
}
void Interpreter::finish() {
if (ECStack.empty()) {
- cout << "Error: no program running, cannot run!\n";
+ std::cout << "Error: no program running, cannot run!\n";
return;
}
HitBreakpoint = executeInstruction();
}
- if (HitBreakpoint) {
- cout << "Breakpoint hit!\n";
- }
+ if (HitBreakpoint)
+ std::cout << "Breakpoint hit!\n";
// Print the next instruction to execute...
printCurrentInstruction();
//
void Interpreter::printCurrentInstruction() {
if (!ECStack.empty()) {
- Instruction *I = *ECStack.back().CurInst;
- InstNumber *IN = (InstNumber*)I->getAnnotation(SlotNumberAID);
+ if (ECStack.back().CurBB->begin() == ECStack.back().CurInst) // print label
+ WriteAsOperand(std::cout, ECStack.back().CurBB) << ":\n";
+
+ Instruction &I = *ECStack.back().CurInst;
+ InstNumber *IN = (InstNumber*)I.getAnnotation(SlotNumberAID);
assert(IN && "Instruction has no numbering annotation!");
- cout << "#" << IN->InstNum << I;
+ std::cout << "#" << IN->InstNum << I;
}
}
void Interpreter::printValue(const Type *Ty, GenericValue V) {
switch (Ty->getPrimitiveID()) {
- case Type::BoolTyID: cout << (V.BoolVal?"true":"false"); break;
- case Type::SByteTyID: cout << V.SByteVal; break;
- case Type::UByteTyID: cout << V.UByteVal; break;
- case Type::ShortTyID: cout << V.ShortVal; break;
- case Type::UShortTyID: cout << V.UShortVal; break;
- case Type::IntTyID: cout << V.IntVal; break;
- case Type::UIntTyID: cout << V.UIntVal; break;
- case Type::LongTyID: cout << V.LongVal; break;
- case Type::ULongTyID: cout << V.ULongVal; break;
- case Type::FloatTyID: cout << V.FloatVal; break;
- case Type::DoubleTyID: cout << V.DoubleVal; break;
- case Type::PointerTyID:cout << (void*)V.ULongVal; break;
+ case Type::BoolTyID: std::cout << (V.BoolVal?"true":"false"); break;
+ case Type::SByteTyID:
+ std::cout << (int)V.SByteVal << " '" << V.SByteVal << "'"; break;
+ case Type::UByteTyID:
+ std::cout << (unsigned)V.UByteVal << " '" << V.UByteVal << "'"; break;
+ case Type::ShortTyID: std::cout << V.ShortVal; break;
+ case Type::UShortTyID: std::cout << V.UShortVal; break;
+ case Type::IntTyID: std::cout << V.IntVal; break;
+ case Type::UIntTyID: std::cout << V.UIntVal; break;
+ case Type::LongTyID: std::cout << (long)V.LongVal; break;
+ case Type::ULongTyID: std::cout << (unsigned long)V.ULongVal; break;
+ case Type::FloatTyID: std::cout << V.FloatVal; break;
+ case Type::DoubleTyID: std::cout << V.DoubleVal; break;
+ case Type::PointerTyID:std::cout << (void*)GVTOP(V); break;
default:
- cout << "- Don't know how to print value of this type!";
+ std::cout << "- Don't know how to print value of this type!";
break;
}
}
void Interpreter::print(const Type *Ty, GenericValue V) {
- cout << Ty << " ";
+ CW << Ty << " ";
printValue(Ty, V);
}
-void Interpreter::print(const string &Name) {
+void Interpreter::print(const std::string &Name) {
Value *PickedVal = ChooseOneOption(Name, LookupMatchingNames(Name));
if (!PickedVal) return;
- if (const Method *M = dyn_cast<const Method>(PickedVal)) {
- cout << M; // Print the method
+ if (const Function *F = dyn_cast<Function>(PickedVal)) {
+ CW << F; // Print the function
+ } else if (const Type *Ty = dyn_cast<Type>(PickedVal)) {
+ CW << "type %" << Name << " = " << Ty->getDescription() << "\n";
+ } else if (const BasicBlock *BB = dyn_cast<BasicBlock>(PickedVal)) {
+ CW << BB; // Print the basic block
} else { // Otherwise there should be an annotation for the slot#
print(PickedVal->getType(),
getOperandValue(PickedVal, ECStack[CurFrame]));
- cout << endl;
+ std::cout << "\n";
}
-
}
-void Interpreter::infoValue(const string &Name) {
+void Interpreter::infoValue(const std::string &Name) {
Value *PickedVal = ChooseOneOption(Name, LookupMatchingNames(Name));
if (!PickedVal) return;
- cout << "Value: ";
+ std::cout << "Value: ";
print(PickedVal->getType(),
getOperandValue(PickedVal, ECStack[CurFrame]));
- cout << endl;
+ std::cout << "\n";
printOperandInfo(PickedVal, ECStack[CurFrame]);
}
-void Interpreter::list() {
- if (ECStack.empty())
- cout << "Error: No program executing!\n";
- else
- cout << ECStack[CurFrame].CurMethod; // Just print the method out...
-}
+// printStackFrame - Print information about the specified stack frame, or -1
+// for the default one.
+//
+void Interpreter::printStackFrame(int FrameNo) {
+ if (FrameNo == -1) FrameNo = CurFrame;
+ Function *F = ECStack[FrameNo].CurFunction;
+ const Type *RetTy = F->getReturnType();
+
+ CW << ((FrameNo == CurFrame) ? '>' : '-') << "#" << FrameNo << ". "
+ << (Value*)RetTy << " \"" << F->getName() << "\"(";
+
+ unsigned i = 0;
+ for (Function::aiterator I = F->abegin(), E = F->aend(); I != E; ++I, ++i) {
+ if (i != 0) std::cout << ", ";
+ CW << *I << "=";
+
+ printValue(I->getType(), getOperandValue(I, ECStack[FrameNo]));
+ }
-void Interpreter::printStackTrace() {
- if (ECStack.empty()) cout << "No program executing!\n";
+ std::cout << ")\n";
- for (unsigned i = 0; i < ECStack.size(); ++i) {
- cout << (((int)i == CurFrame) ? '>' : '-');
- cout << "#" << i << ". " << ECStack[i].CurMethod->getType() << " \""
- << ECStack[i].CurMethod->getName() << "\"(";
- // TODO: Print Args
- cout << ")" << endl;
- cout << *ECStack[i].CurInst;
+ if (FrameNo != int(ECStack.size()-1)) {
+ BasicBlock::iterator I = ECStack[FrameNo].CurInst;
+ CW << --I;
+ } else {
+ CW << *ECStack[FrameNo].CurInst;
}
}
+
projects / oota-llvm.git / blobdiff