#include "Interpreter.h"
#include "ExecutionAnnotations.h"
+#include "llvm/iPHINode.h"
#include "llvm/iOther.h"
#include "llvm/iTerminators.h"
#include "llvm/iMemory.h"
-#include "llvm/Type.h"
-#include "llvm/ConstPoolVals.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 "Support/CommandLine.h"
+#include <math.h> // For fmod
+#include <signal.h>
+#include <setjmp.h>
+using std::vector;
+using std::cout;
+using std::cerr;
+
+static cl::opt<bool>
+QuietMode("quiet", cl::desc("Do not emit any non-program output"));
+
+static cl::alias
+QuietModeA("q", cl::desc("Alias for -quiet"), cl::aliasopt(QuietMode));
+
+static cl::opt<bool>
+ArrayChecksEnabled("array-checks", cl::desc("Enable array bound checks"));
+
+static 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
+//
+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 *, 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
+//===----------------------------------------------------------------------===//
static unsigned getOperandSlot(Value *V) {
SlotNumber *SN = (SlotNumber*)V->getAnnotation(SlotNumberAID);
}
#define GET_CONST_VAL(TY, CLASS) \
- case Type::TY##TyID: Result.TY##Val = ((CLASS*)CPV)->getValue(); break
+ case Type::TY##TyID: Result.TY##Val = cast<CLASS>(C)->getValue(); break
+
+// Operations used by constant expr implementations...
+static GenericValue executeCastOperation(Value *Src, const Type *DestTy,
+ ExecutionContext &SF);
+static GenericValue executeGEPOperation(Value *Src, User::op_iterator IdxBegin,
+ User::op_iterator IdxEnd,
+ ExecutionContext &SF);
+static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF);
+
+static GenericValue getConstantValue(const Constant *C) {
+ GenericValue Result;
+ switch (C->getType()->getPrimitiveID()) {
+ GET_CONST_VAL(Bool , ConstantBool);
+ GET_CONST_VAL(UByte , ConstantUInt);
+ GET_CONST_VAL(SByte , ConstantSInt);
+ GET_CONST_VAL(UShort , ConstantUInt);
+ GET_CONST_VAL(Short , ConstantSInt);
+ GET_CONST_VAL(UInt , ConstantUInt);
+ GET_CONST_VAL(Int , ConstantSInt);
+ GET_CONST_VAL(ULong , ConstantUInt);
+ GET_CONST_VAL(Long , ConstantSInt);
+ GET_CONST_VAL(Float , ConstantFP);
+ GET_CONST_VAL(Double , ConstantFP);
+ case Type::PointerTyID:
+ if (isa<ConstantPointerNull>(C)) {
+ Result.PointerVal = 0;
+ } else if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(C)){
+ GlobalAddress *Address =
+ (GlobalAddress*)CPR->getValue()->getOrCreateAnnotation(GlobalAddressAID);
+ Result.PointerVal = (PointerTy)Address->Ptr;
+ } else {
+ assert(0 && "Unknown constant pointer type!");
+ }
+ break;
+ default:
+ cout << "ERROR: Constant unimp for type: " << C->getType() << "\n";
+ }
+ return Result;
+}
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(Float , ConstPoolFP);
- GET_CONST_VAL(Double , ConstPoolFP);
+ 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 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(), SF);
default:
- cout << "ERROR: Constant unimp for type: " << CPV->getType() << endl;
+ cerr << "Unhandled ConstantExpr: " << CE << "\n";
+ abort();
+ { GenericValue V; return V; }
}
+ } else if (Constant *CPV = dyn_cast<Constant>(V)) {
+ return getConstantValue(CPV);
+ } else if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
+ GlobalAddress *Address =
+ (GlobalAddress*)GV->getOrCreateAnnotation(GlobalAddressAID);
+ GenericValue Result;
+ Result.PointerVal = (PointerTy)(GenericValue*)Address->Ptr;
return Result;
} 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)) {
+ if (isa<Constant>(V)) {
+ cout << "Constant Pool Value\n";
+ } else if (isa<GlobalValue>(V)) {
+ 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;
+ << " 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];
+ cout << ( Cur >= 160? char((Cur>>4)+'A'-10) : char((Cur>>4) + '0'))
+ << ((Cur&15) >= 10? char((Cur&15)+'A'-10) : char((Cur&15) + '0'));
+ }
+ 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;
+ //cout << "Setting value: " << &SF.Values[TyP][getOperandSlot(V)] << "\n";
SF.Values[TyP][getOperandSlot(V)] = Val;
}
+//===----------------------------------------------------------------------===//
+// Annotation Wrangling code
+//===----------------------------------------------------------------------===//
+
+void Interpreter::initializeExecutionEngine() {
+ AnnotationManager::registerAnnotationFactory(MethodInfoAID,
+ &MethodInfo::Create);
+ AnnotationManager::registerAnnotationFactory(GlobalAddressAID,
+ &GlobalAddress::Create);
+ initializeSignalHandlers();
+}
+
+static void StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
+ const Type *Ty);
+
+// InitializeMemory - Recursive function to apply a Constant value into the
+// specified memory location...
+//
+static void InitializeMemory(const Constant *Init, char *Addr) {
+
+ if (Init->getType()->isFirstClassType()) {
+ GenericValue Val = getConstantValue(Init);
+ StoreValueToMemory(Val, (GenericValue*)Addr, Init->getType());
+ return;
+ }
+
+ switch (Init->getType()->getPrimitiveID()) {
+ case Type::ArrayTyID: {
+ const ConstantArray *CPA = cast<ConstantArray>(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<Constant>(Val[i].get()), Addr+i*ElementSize);
+ return;
+ }
+
+ case Type::StructTyID: {
+ const ConstantStruct *CPS = cast<ConstantStruct>(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<Constant>(Val[i].get()),
+ Addr+SL->MemberOffsets[i]);
+ return;
+ }
+
+ default:
+ CW << "Bad Type: " << Init->getType() << "\n";
+ assert(0 && "Unknown constant type to initialize memory with!");
+ }
+}
+
+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<Function>(GVal)) {
+ // The GlobalAddress object for a function is just a pointer to function
+ // 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 function 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()->getElementType(); // Type to be allocated
+
+ // Allocate enough memory to hold the type...
+ void *Addr = calloc(1, 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
#define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; break
-#define IMPLEMENT_BINARY_PTR_OPERATOR(OP) \
- case Type::PointerTyID: Dest.PointerVal = \
- (GenericValue*)((unsigned long)Src1.PointerVal OP (unsigned long)Src2.PointerVal); break
static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
const Type *Ty, ExecutionContext &SF) {
IMPLEMENT_BINARY_OPERATOR(+, Short);
IMPLEMENT_BINARY_OPERATOR(+, UInt);
IMPLEMENT_BINARY_OPERATOR(+, Int);
+ IMPLEMENT_BINARY_OPERATOR(+, ULong);
+ IMPLEMENT_BINARY_OPERATOR(+, Long);
IMPLEMENT_BINARY_OPERATOR(+, Float);
IMPLEMENT_BINARY_OPERATOR(+, Double);
- IMPLEMENT_BINARY_PTR_OPERATOR(+);
- case Type::ULongTyID:
- case Type::LongTyID:
+ IMPLEMENT_BINARY_OPERATOR(+, Pointer);
default:
- cout << "Unhandled type for Add instruction: " << Ty << endl;
+ cout << "Unhandled type for Add instruction: " << Ty << "\n";
}
return Dest;
}
IMPLEMENT_BINARY_OPERATOR(-, Short);
IMPLEMENT_BINARY_OPERATOR(-, UInt);
IMPLEMENT_BINARY_OPERATOR(-, Int);
+ IMPLEMENT_BINARY_OPERATOR(-, ULong);
+ IMPLEMENT_BINARY_OPERATOR(-, Long);
IMPLEMENT_BINARY_OPERATOR(-, Float);
IMPLEMENT_BINARY_OPERATOR(-, Double);
- IMPLEMENT_BINARY_PTR_OPERATOR(-);
- case Type::ULongTyID:
- case Type::LongTyID:
+ IMPLEMENT_BINARY_OPERATOR(-, Pointer);
+ default:
+ cout << "Unhandled type for Sub instruction: " << Ty << "\n";
+ }
+ return Dest;
+}
+
+static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF) {
+ 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);
+ IMPLEMENT_BINARY_OPERATOR(*, Float);
+ IMPLEMENT_BINARY_OPERATOR(*, Double);
+ IMPLEMENT_BINARY_OPERATOR(*, Pointer);
+ default:
+ cout << "Unhandled type for Mul instruction: " << Ty << "\n";
+ }
+ return Dest;
+}
+
+static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF) {
+ 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);
+ IMPLEMENT_BINARY_OPERATOR(/, Float);
+ IMPLEMENT_BINARY_OPERATOR(/, Double);
+ IMPLEMENT_BINARY_OPERATOR(/, Pointer);
+ default:
+ cout << "Unhandled type for Div instruction: " << Ty << "\n";
+ }
+ return Dest;
+}
+
+static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF) {
+ 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);
+ IMPLEMENT_BINARY_OPERATOR(%, Pointer);
+ case Type::FloatTyID:
+ Dest.FloatVal = fmod(Src1.FloatVal, Src2.FloatVal);
+ break;
+ case Type::DoubleTyID:
+ Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal);
+ break;
+ default:
+ cout << "Unhandled type for Rem instruction: " << Ty << "\n";
+ }
+ return Dest;
+}
+
+static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF) {
+ 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);
+ IMPLEMENT_BINARY_OPERATOR(&, Pointer);
+ default:
+ cout << "Unhandled type for And instruction: " << Ty << "\n";
+ }
+ return Dest;
+}
+
+
+static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF) {
+ 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);
+ IMPLEMENT_BINARY_OPERATOR(|, Pointer);
+ default:
+ cout << "Unhandled type for Or instruction: " << Ty << "\n";
+ }
+ return Dest;
+}
+
+
+static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty, ExecutionContext &SF) {
+ 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);
+ IMPLEMENT_BINARY_OPERATOR(^, Pointer);
default:
- cout << "Unhandled type for Sub instruction: " << Ty << endl;
+ cout << "Unhandled type for Xor instruction: " << Ty << "\n";
}
return Dest;
}
+
#define IMPLEMENT_SETCC(OP, TY) \
case Type::TY##TyID: Dest.BoolVal = Src1.TY##Val OP Src2.TY##Val; break
IMPLEMENT_SETCC(==, Short);
IMPLEMENT_SETCC(==, UInt);
IMPLEMENT_SETCC(==, Int);
+ IMPLEMENT_SETCC(==, ULong);
+ IMPLEMENT_SETCC(==, Long);
IMPLEMENT_SETCC(==, Float);
IMPLEMENT_SETCC(==, Double);
IMPLEMENT_SETCC(==, Pointer);
- case Type::ULongTyID:
- case Type::LongTyID:
default:
- cout << "Unhandled type for SetEQ instruction: " << Ty << endl;
+ cout << "Unhandled type for SetEQ instruction: " << Ty << "\n";
}
return Dest;
}
IMPLEMENT_SETCC(!=, Short);
IMPLEMENT_SETCC(!=, UInt);
IMPLEMENT_SETCC(!=, Int);
+ IMPLEMENT_SETCC(!=, ULong);
+ IMPLEMENT_SETCC(!=, Long);
IMPLEMENT_SETCC(!=, Float);
IMPLEMENT_SETCC(!=, Double);
IMPLEMENT_SETCC(!=, Pointer);
- case Type::ULongTyID:
- case Type::LongTyID:
+
default:
- cout << "Unhandled type for SetNE instruction: " << Ty << endl;
+ cout << "Unhandled type for SetNE instruction: " << Ty << "\n";
}
return Dest;
}
IMPLEMENT_SETCC(<=, Short);
IMPLEMENT_SETCC(<=, UInt);
IMPLEMENT_SETCC(<=, Int);
+ IMPLEMENT_SETCC(<=, ULong);
+ IMPLEMENT_SETCC(<=, Long);
IMPLEMENT_SETCC(<=, Float);
IMPLEMENT_SETCC(<=, Double);
IMPLEMENT_SETCC(<=, Pointer);
- case Type::ULongTyID:
- case Type::LongTyID:
default:
- cout << "Unhandled type for SetLE instruction: " << Ty << endl;
+ cout << "Unhandled type for SetLE instruction: " << Ty << "\n";
}
return Dest;
}
IMPLEMENT_SETCC(>=, Short);
IMPLEMENT_SETCC(>=, UInt);
IMPLEMENT_SETCC(>=, Int);
+ IMPLEMENT_SETCC(>=, ULong);
+ IMPLEMENT_SETCC(>=, Long);
IMPLEMENT_SETCC(>=, Float);
IMPLEMENT_SETCC(>=, Double);
IMPLEMENT_SETCC(>=, Pointer);
- case Type::ULongTyID:
- case Type::LongTyID:
default:
- cout << "Unhandled type for SetGE instruction: " << Ty << endl;
+ cout << "Unhandled type for SetGE instruction: " << Ty << "\n";
}
return Dest;
}
IMPLEMENT_SETCC(<, Short);
IMPLEMENT_SETCC(<, UInt);
IMPLEMENT_SETCC(<, Int);
+ IMPLEMENT_SETCC(<, ULong);
+ IMPLEMENT_SETCC(<, Long);
IMPLEMENT_SETCC(<, Float);
IMPLEMENT_SETCC(<, Double);
IMPLEMENT_SETCC(<, Pointer);
- case Type::ULongTyID:
- case Type::LongTyID:
default:
- cout << "Unhandled type for SetLT instruction: " << Ty << endl;
+ cout << "Unhandled type for SetLT instruction: " << Ty << "\n";
}
return Dest;
}
IMPLEMENT_SETCC(>, Short);
IMPLEMENT_SETCC(>, UInt);
IMPLEMENT_SETCC(>, Int);
+ IMPLEMENT_SETCC(>, ULong);
+ IMPLEMENT_SETCC(>, Long);
IMPLEMENT_SETCC(>, Float);
IMPLEMENT_SETCC(>, Double);
IMPLEMENT_SETCC(>, Pointer);
- case Type::ULongTyID:
- case Type::LongTyID:
default:
- cout << "Unhandled type for SetGT instruction: " << Ty << endl;
+ cout << "Unhandled type for SetGT instruction: " << Ty << "\n";
}
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);
+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);
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;
+ 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::Rem: R = executeRemInst (Src1, Src2, Ty, SF); break;
+ case Instruction::And: R = executeAndInst (Src1, Src2, Ty, SF); break;
+ case Instruction::Or: R = executeOrInst (Src1, Src2, Ty, SF); break;
+ case Instruction::Xor: R = executeXorInst (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::SetGT: R = executeSetGTInst(Src1, Src2, Ty, SF); break;
default:
cout << "Don't know how to handle this binary operator!\n-->" << I;
+ R = Src1;
}
- SetValue(I, R, SF);
+ SetValue(&I, R, SF);
}
//===----------------------------------------------------------------------===//
// Terminator Instruction Implementations
//===----------------------------------------------------------------------===//
-void Interpreter::executeRetInst(ReturnInst *I, ExecutionContext &SF) {
+static void PerformExitStuff() {
+#ifdef PROFILE_STRUCTURE_FIELDS
+ // Print out structure field accounting information...
+ if (!FieldAccessCounts.empty()) {
+ CW << "Profile Field Access Counts:\n";
+ std::map<const StructType *, vector<unsigned> >::iterator
+ I = FieldAccessCounts.begin(), E = FieldAccessCounts.end();
+ for (; I != E; ++I) {
+ 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";
+ cout.precision(3);
+ for (I = FieldAccessCounts.begin(); I != E; ++I) {
+ 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) {
+ if (!QuietMode) {
+ cout << "Program returned ";
+ print(Type::IntTy, GV);
+ cout << " via 'void exit(int)'\n";
+ }
+
+ ExitCode = GV.SByteVal;
+ ECStack.clear();
+ PerformExitStuff();
+}
+
+void Interpreter::executeRetInst(ReturnInst &I, ExecutionContext &SF) {
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().CurMethod;
// 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 ";
- printValue(RetTy, Result);
- cout << endl;
+ if (!QuietMode) {
+ CW << "Function " << M->getType() << " \"" << M->getName()
+ << "\" returned ";
+ print(RetTy, Result);
+ 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;
}
+
+ PerformExitStuff();
return;
}
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 ";
- printValue(RetTy, Result);
- cout << endl;
+ CW << "Function " << M->getType() << " \"" << M->getName()
+ << "\" returned ";
+ print(RetTy, Result);
+ cout << "\n";
}
}
-void Interpreter::executeBrInst(BranchInst *I, ExecutionContext &SF) {
+void Interpreter::executeBrInst(BranchInst &I, ExecutionContext &SF) {
SF.PrevBB = SF.CurBB; // Update PrevBB so that PHI nodes work...
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();
+ GenericValue CondVal = getOperandValue(Cond, SF);
+ if (CondVal.BoolVal == 0) // If false cond...
+ Dest = I.getSuccessor(1);
}
SF.CurBB = Dest; // Update CurBB to branch destination
SF.CurInst = SF.CurBB->begin(); // Update new instruction ptr...
// Memory Instruction Implementations
//===----------------------------------------------------------------------===//
-// Create a TargetData structure to handle memory addressing and size/alignment
-// computations
-//
-static TargetData TD("lli Interpreter");
-
-void Interpreter::executeAllocInst(AllocationInst *I, ExecutionContext &SF) {
- const Type *Ty = I->getType()->getValueType(); // Type to be allocated
- unsigned NumElements = 1;
+void Interpreter::executeAllocInst(AllocationInst &I, ExecutionContext &SF) {
+ const Type *Ty = I.getType()->getElementType(); // Type to be allocated
- if (I->getNumOperands()) { // Allocating a unsized array type?
- assert(Ty->isArrayType() && Ty->castArrayType()->isUnsized() &&
- "Allocation inst with size operand for !unsized array type???");
- Ty = ((const ArrayType*)Ty)->getElementType(); // Get the actual type...
-
- // 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...
+ // FIXME: Don't use CALLOC, use a tainted malloc.
+ void *Memory = calloc(NumElements, TD.getTypeSize(Ty));
+
GenericValue Result;
- Result.PointerVal = (GenericValue*)malloc(NumElements * TD.getTypeSize(Ty));
+ Result.PointerVal = (PointerTy)Memory;
assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");
- SetValue(I, Result, SF);
+ SetValue(&I, Result, SF);
- if (I->getOpcode() == Instruction::Alloca) {
- // Keep track to free it later...
- }
+ 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);
+static void executeFreeInst(FreeInst &I, ExecutionContext &SF) {
+ 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(Value.PointerVal); // Free memory
+ free((void*)Value.PointerVal); // Free memory
}
-static void executeLoadInst(LoadInst *I, ExecutionContext &SF) {
- assert(I->getNumOperands() == 1 && "NI!");
- GenericValue *Ptr = getOperandValue(I->getPtrOperand(), SF).PointerVal;
- 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: Result.LongVal = Ptr->LongVal; break;
- case Type::FloatTyID: Result.FloatVal = Ptr->FloatVal; break;
- case Type::DoubleTyID: Result.DoubleVal = Ptr->DoubleVal; break;
- case Type::PointerTyID: Result.PointerVal = Ptr->PointerVal; break;
- default:
- cout << "Cannot load value of type " << I->getType() << "!\n";
+// getElementOffset - The workhorse for getelementptr.
+//
+static GenericValue 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...
+ 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 uint 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) {
+ 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 = getOperandValue(I->getPtrOperand(), SF).PointerVal;
- GenericValue Val = getOperandValue(I->getOperand(0), SF);
- assert(I->getNumOperands() == 2 && "NI!");
+static void executeGEPInst(GetElementPtrInst &I, ExecutionContext &SF) {
+ SetValue(&I, 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: Ptr->LongVal = Val.LongVal; break;
- case Type::FloatTyID: Ptr->FloatVal = Val.FloatVal; break;
- case Type::DoubleTyID: Ptr->DoubleVal = Val.DoubleVal; break;
- case Type::PointerTyID: Ptr->PointerVal = Val.PointerVal; break;
- default:
- cout << "Cannot store value of type " << I->getType() << "!\n";
+static void executeLoadInst(LoadInst &I, ExecutionContext &SF) {
+ GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
+ GenericValue *Ptr = (GenericValue*)SRC.PointerVal;
+ GenericValue Result;
+
+ if (TD.isLittleEndian()) {
+ switch (I.getType()->getPrimitiveID()) {
+ case Type::BoolTyID:
+ case Type::UByteTyID:
+ case Type::SByteTyID: Result.Untyped[0] = Ptr->UByteVal; break;
+ case Type::UShortTyID:
+ case Type::ShortTyID: Result.Untyped[0] = Ptr->UShortVal & 255;
+ Result.Untyped[1] = (Ptr->UShortVal >> 8) & 255;
+ break;
+ case Type::FloatTyID:
+ case Type::UIntTyID:
+ case Type::IntTyID: Result.Untyped[0] = Ptr->UIntVal & 255;
+ Result.Untyped[1] = (Ptr->UIntVal >> 8) & 255;
+ Result.Untyped[2] = (Ptr->UIntVal >> 16) & 255;
+ Result.Untyped[3] = (Ptr->UIntVal >> 24) & 255;
+ break;
+ case Type::DoubleTyID:
+ case Type::ULongTyID:
+ case Type::LongTyID:
+ case Type::PointerTyID: Result.Untyped[0] = Ptr->ULongVal & 255;
+ Result.Untyped[1] = (Ptr->ULongVal >> 8) & 255;
+ Result.Untyped[2] = (Ptr->ULongVal >> 16) & 255;
+ Result.Untyped[3] = (Ptr->ULongVal >> 24) & 255;
+ Result.Untyped[4] = (Ptr->ULongVal >> 32) & 255;
+ Result.Untyped[5] = (Ptr->ULongVal >> 40) & 255;
+ Result.Untyped[6] = (Ptr->ULongVal >> 48) & 255;
+ Result.Untyped[7] = (Ptr->ULongVal >> 56) & 255;
+ break;
+ default:
+ cout << "Cannot load value of type " << I.getType() << "!\n";
+ }
+ } else {
+ switch (I.getType()->getPrimitiveID()) {
+ case Type::BoolTyID:
+ case Type::UByteTyID:
+ case Type::SByteTyID: Result.Untyped[0] = Ptr->UByteVal; break;
+ case Type::UShortTyID:
+ case Type::ShortTyID: Result.Untyped[1] = Ptr->UShortVal & 255;
+ Result.Untyped[0] = (Ptr->UShortVal >> 8) & 255;
+ break;
+ case Type::FloatTyID:
+ case Type::UIntTyID:
+ case Type::IntTyID: Result.Untyped[3] = Ptr->UIntVal & 255;
+ Result.Untyped[2] = (Ptr->UIntVal >> 8) & 255;
+ Result.Untyped[1] = (Ptr->UIntVal >> 16) & 255;
+ Result.Untyped[0] = (Ptr->UIntVal >> 24) & 255;
+ break;
+ case Type::DoubleTyID:
+ case Type::ULongTyID:
+ case Type::LongTyID:
+ case Type::PointerTyID: Result.Untyped[7] = Ptr->ULongVal & 255;
+ Result.Untyped[6] = (Ptr->ULongVal >> 8) & 255;
+ Result.Untyped[5] = (Ptr->ULongVal >> 16) & 255;
+ Result.Untyped[4] = (Ptr->ULongVal >> 24) & 255;
+ Result.Untyped[3] = (Ptr->ULongVal >> 32) & 255;
+ Result.Untyped[2] = (Ptr->ULongVal >> 40) & 255;
+ Result.Untyped[1] = (Ptr->ULongVal >> 48) & 255;
+ Result.Untyped[0] = (Ptr->ULongVal >> 56) & 255;
+ break;
+ default:
+ cout << "Cannot load value of type " << I.getType() << "!\n";
+ }
+ }
+
+ SetValue(&I, Result, SF);
+}
+
+static void StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
+ const Type *Ty) {
+ if (TD.isLittleEndian()) {
+ switch (Ty->getPrimitiveID()) {
+ case Type::BoolTyID:
+ case Type::UByteTyID:
+ case Type::SByteTyID: Ptr->Untyped[0] = Val.UByteVal; break;
+ case Type::UShortTyID:
+ case Type::ShortTyID: Ptr->Untyped[0] = Val.UShortVal & 255;
+ Ptr->Untyped[1] = (Val.UShortVal >> 8) & 255;
+ break;
+ case Type::FloatTyID:
+ case Type::UIntTyID:
+ case Type::IntTyID: Ptr->Untyped[0] = Val.UIntVal & 255;
+ Ptr->Untyped[1] = (Val.UIntVal >> 8) & 255;
+ Ptr->Untyped[2] = (Val.UIntVal >> 16) & 255;
+ Ptr->Untyped[3] = (Val.UIntVal >> 24) & 255;
+ break;
+ case Type::DoubleTyID:
+ case Type::ULongTyID:
+ case Type::LongTyID:
+ case Type::PointerTyID: Ptr->Untyped[0] = Val.ULongVal & 255;
+ Ptr->Untyped[1] = (Val.ULongVal >> 8) & 255;
+ Ptr->Untyped[2] = (Val.ULongVal >> 16) & 255;
+ Ptr->Untyped[3] = (Val.ULongVal >> 24) & 255;
+ Ptr->Untyped[4] = (Val.ULongVal >> 32) & 255;
+ Ptr->Untyped[5] = (Val.ULongVal >> 40) & 255;
+ Ptr->Untyped[6] = (Val.ULongVal >> 48) & 255;
+ Ptr->Untyped[7] = (Val.ULongVal >> 56) & 255;
+ break;
+ default:
+ cout << "Cannot load value of type " << Ty << "!\n";
+ }
+ } else {
+ switch (Ty->getPrimitiveID()) {
+ case Type::BoolTyID:
+ case Type::UByteTyID:
+ case Type::SByteTyID: Ptr->Untyped[0] = Val.UByteVal; break;
+ case Type::UShortTyID:
+ case Type::ShortTyID: Ptr->Untyped[1] = Val.UShortVal & 255;
+ Ptr->Untyped[0] = (Val.UShortVal >> 8) & 255;
+ break;
+ case Type::FloatTyID:
+ case Type::UIntTyID:
+ case Type::IntTyID: Ptr->Untyped[3] = Val.UIntVal & 255;
+ Ptr->Untyped[2] = (Val.UIntVal >> 8) & 255;
+ Ptr->Untyped[1] = (Val.UIntVal >> 16) & 255;
+ Ptr->Untyped[0] = (Val.UIntVal >> 24) & 255;
+ break;
+ case Type::DoubleTyID:
+ case Type::ULongTyID:
+ case Type::LongTyID:
+ case Type::PointerTyID: Ptr->Untyped[7] = Val.ULongVal & 255;
+ Ptr->Untyped[6] = (Val.ULongVal >> 8) & 255;
+ Ptr->Untyped[5] = (Val.ULongVal >> 16) & 255;
+ Ptr->Untyped[4] = (Val.ULongVal >> 24) & 255;
+ Ptr->Untyped[3] = (Val.ULongVal >> 32) & 255;
+ Ptr->Untyped[2] = (Val.ULongVal >> 40) & 255;
+ Ptr->Untyped[1] = (Val.ULongVal >> 48) & 255;
+ Ptr->Untyped[0] = (Val.ULongVal >> 56) & 255;
+ break;
+ default:
+ cout << "Cannot load value of type " << Ty << "!\n";
+ }
}
}
+static void executeStoreInst(StoreInst &I, ExecutionContext &SF) {
+ GenericValue Val = getOperandValue(I.getOperand(0), SF);
+ GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
+ StoreValueToMemory(Val, (GenericValue *)SRC.PointerVal, I.getType());
+}
+
//===----------------------------------------------------------------------===//
// Miscellaneous Instruction Implementations
//===----------------------------------------------------------------------===//
-void Interpreter::executeCallInst(CallInst *I, ExecutionContext &SF) {
- ECStack.back().Caller = I;
+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));
+ 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);
+ // 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);
+
+ callMethod((Function*)SRC.PointerVal, ArgVals);
}
-static void executePHINode(PHINode *I, ExecutionContext &SF) {
+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);
+ for (unsigned i = I.getNumIncomingValues(); i > 0;) {
+ if (I.getIncomingBlock(--i) == PrevBB) {
+ IncomingValue = I.getIncomingValue(i);
break;
}
}
assert(IncomingValue && "No PHI node predecessor for current PrevBB!");
// Found the value, set as the result...
- SetValue(I, getOperandValue(IncomingValue, SF), SF);
+ SetValue(&I, getOperandValue(IncomingValue, SF), SF);
}
#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);
+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);
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SHIFT(<<, Short);
IMPLEMENT_SHIFT(<<, UInt);
IMPLEMENT_SHIFT(<<, Int);
- case Type::ULongTyID:
- case Type::LongTyID:
+ IMPLEMENT_SHIFT(<<, ULong);
+ IMPLEMENT_SHIFT(<<, Long);
+ IMPLEMENT_SHIFT(<<, Pointer);
default:
- cout << "Unhandled type for Shl instruction: " << Ty << endl;
+ 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);
+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);
GenericValue Dest;
switch (Ty->getPrimitiveID()) {
IMPLEMENT_SHIFT(>>, Short);
IMPLEMENT_SHIFT(>>, UInt);
IMPLEMENT_SHIFT(>>, Int);
- case Type::ULongTyID:
- case Type::LongTyID:
+ IMPLEMENT_SHIFT(>>, ULong);
+ IMPLEMENT_SHIFT(>>, Long);
+ IMPLEMENT_SHIFT(>>, Pointer);
default:
- cout << "Unhandled type for Shr instruction: " << Ty << endl;
+ cout << "Unhandled type for Shr instruction: " << Ty << "\n";
}
- 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, Short); \
IMPLEMENT_CAST(DESTTY, DESTCTY, UInt); \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Int);
-
-#define IMPLEMENT_CAST_CASE_PTR_IMP(DESTTY, DESTCTY) \
- IMPLEMENT_CAST(DESTTY, DESTCTY, Pointer)
+ IMPLEMENT_CAST(DESTTY, DESTCTY, Int); \
+ IMPLEMENT_CAST(DESTTY, DESTCTY, ULong); \
+ IMPLEMENT_CAST(DESTTY, DESTCTY, Long); \
+ IMPLEMENT_CAST(DESTTY, DESTCTY, Pointer);
#define IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY) \
IMPLEMENT_CAST(DESTTY, DESTCTY, Float); \
IMPLEMENT_CAST(DESTTY, DESTCTY, Double)
#define IMPLEMENT_CAST_CASE_END() \
- default: cout << "Unhandled cast: " << SrcTy << " to " << Ty << endl; \
+ default: cout << "Unhandled cast: " << SrcTy << " to " << Ty << "\n"; \
break; \
} \
break
#define IMPLEMENT_CAST_CASE(DESTTY, DESTCTY) \
- IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY); \
- IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY); \
- IMPLEMENT_CAST_CASE_PTR_IMP(DESTTY, DESTCTY); \
- IMPLEMENT_CAST_CASE_END()
-
-#define IMPLEMENT_CAST_CASE_FP(DESTTY, DESTCTY) \
IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY); \
IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY); \
IMPLEMENT_CAST_CASE_END()
-#define IMPLEMENT_CAST_CASE_PTR(DESTTY, DESTCTY) \
- IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY); \
- IMPLEMENT_CAST_CASE_PTR_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_FP(Float , float);
- IMPLEMENT_CAST_CASE_FP(Double, double);
- IMPLEMENT_CAST_CASE_PTR(Pointer, GenericValue *);
- case Type::ULongTyID:
- case Type::LongTyID:
+ 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)(uint32_t));
+ IMPLEMENT_CAST_CASE(Float , (float));
+ IMPLEMENT_CAST_CASE(Double , (double));
default:
- cout << "Unhandled dest type for cast instruction: " << Ty << endl;
+ cout << "Unhandled dest type for cast instruction: " << Ty << "\n";
}
- SetValue(I, Dest, SF);
+
+ return Dest;
}
+static void executeCastInst(CastInst &I, ExecutionContext &SF) {
+ SetValue(&I, executeCastOperation(I.getOperand(0), I.getType(), SF), 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)));
- }
+MethodInfo::MethodInfo(Function *F) : Annotation(MethodInfoAID) {
+ // 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) {
}
-void Interpreter::initializeExecutionEngine() {
- AnnotationManager::registerAnnotationFactory(MethodInfoAID, CreateMethodInfo);
-}
-
//===----------------------------------------------------------------------===//
-// callMethod - Execute the specified method...
+// callMethod - Execute the specified function...
//
-void Interpreter::callMethod(Method *M, const vector<GenericValue> &ArgVals) {
+void Interpreter::callMethod(Function *M, const 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);
+ GenericValue Result = callExternalMethod(M, ArgVals);
+ const Type *RetTy = M->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 " << M->getType() << " \"" << M->getName()
+ << "\" returned ";
+ print(RetTy, Result);
+ 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);
ECStack.push_back(ExecutionContext()); // Make a new stack frame...
ExecutionContext &StackFrame = ECStack.back(); // Fill it in...
StackFrame.CurMethod = M;
- StackFrame.CurBB = M->front();
+ StackFrame.CurBB = M->begin();
StackFrame.CurInst = StackFrame.CurBB->begin();
StackFrame.MethInfo = MethInfo;
// Initialize the values to nothing...
StackFrame.Values.resize(MethInfo->NumPlaneElements.size());
- for (unsigned i = 0; i < MethInfo->NumPlaneElements.size(); ++i)
+ for (unsigned i = 0; i < MethInfo->NumPlaneElements.size(); ++i) {
StackFrame.Values[i].resize(MethInfo->NumPlaneElements[i]);
+ // Taint the initial values of stuff
+ memset(&StackFrame.Values[i][0], 42,
+ MethInfo->NumPlaneElements[i]*sizeof(GenericValue));
+ }
+
StackFrame.PrevBB = 0; // No previous BB for PHI nodes...
- // Run through the method arguments and initialize their values...
+ // Run through the function arguments and initialize their values...
+ assert(ArgVals.size() == M->asize() &&
+ "Invalid number of values passed to function invocation!");
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 = M->abegin(), E = M->aend(); AI != E; ++AI, ++i)
+ SetValue(AI, ArgVals[i], StackFrame);
}
// 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 (I->isBinaryOp()) {
- executeBinaryInst((BinaryOperator*)I, SF);
+ if (Trace)
+ CW << "Run:" << I;
+
+ // 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) {
+ 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) {
+ cout << "CTRL-C Detected, execution halted.\n";
+ }
+ InInstruction = false;
+ return true;
+ }
+
+ InInstruction = true;
+ if (I.isBinaryOp()) {
+ executeBinaryInst(cast<BinaryOperator>(I), SF);
} else {
- switch (I->getOpcode()) {
+ switch (I.getOpcode()) {
// Terminators
- case Instruction::Ret: executeRetInst ((ReturnInst*)I, SF); break;
- case Instruction::Br: executeBrInst ((BranchInst*)I, SF); break;
+ case Instruction::Ret: executeRetInst (cast<ReturnInst>(I), SF); break;
+ case Instruction::Br: executeBrInst (cast<BranchInst>(I), SF); break;
// Memory Instructions
case Instruction::Alloca:
- case Instruction::Malloc: executeAllocInst ((AllocationInst*)I, SF); break;
- case Instruction::Free: executeFreeInst ((FreeInst*) I, SF); break;
- case Instruction::Load: executeLoadInst ((LoadInst*) I, SF); break;
- case Instruction::Store: executeStoreInst ((StoreInst*) I, SF); break;
+ 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;
+ case Instruction::GetElementPtr:
+ executeGEPInst(cast<GetElementPtrInst>(I), SF); break;
// Miscellaneous Instructions
- case Instruction::Call: executeCallInst ((CallInst*) I, SF); break;
- case Instruction::PHINode: executePHINode ((PHINode*) I, SF); break;
- case Instruction::Shl: executeShlInst ((ShiftInst*) I, SF); break;
- case Instruction::Shr: executeShrInst ((ShiftInst*) I, SF); break;
- case Instruction::Cast: executeCastInst ((CastInst*) I, SF); break;
+ 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;
}
}
+ 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
}
// --- UI Stuff...
-
-
-
void Interpreter::nextInstruction() { // Do the 'next' command
if (ECStack.empty()) {
cout << "Error: no program running, cannot 'next'!\n";
// 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...
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();
if (HitBreakpoint) {
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(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;
}
}
void Interpreter::printValue(const Type *Ty, GenericValue V) {
- cout << Ty << " ";
-
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::SByteTyID:
+ cout << (int)V.SByteVal << " '" << V.SByteVal << "'"; break;
+ case Type::UByteTyID:
+ cout << (unsigned)V.UByteVal << " '" << 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 << (long)V.LongVal; break;
+ case Type::ULongTyID: cout << (unsigned long)V.ULongVal; break;
case Type::FloatTyID: cout << V.FloatVal; break;
case Type::DoubleTyID: cout << V.DoubleVal; break;
- case Type::PointerTyID:cout << V.PointerVal; break;
+ case Type::PointerTyID:cout << (void*)V.PointerVal; break;
default:
cout << "- Don't know how to print value of this type!";
break;
}
}
-void Interpreter::printValue(const string &Name) {
+void Interpreter::print(const Type *Ty, GenericValue V) {
+ CW << Ty << " ";
+ printValue(Ty, V);
+}
+
+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<const Function>(PickedVal)) {
+ CW << F; // Print the function
+ } else if (const Type *Ty = dyn_cast<const Type>(PickedVal)) {
+ CW << "type %" << Name << " = " << Ty->getDescription() << "\n";
+ } else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(PickedVal)) {
+ CW << BB; // Print the basic block
} else { // Otherwise there should be an annotation for the slot#
- printValue(PickedVal->getType(),
- getOperandValue(PickedVal, ECStack[CurFrame]));
- cout << endl;
+ print(PickedVal->getType(),
+ getOperandValue(PickedVal, ECStack[CurFrame]));
+ 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: ";
- printValue(PickedVal->getType(),
- getOperandValue(PickedVal, ECStack[CurFrame]));
- cout << endl;
+ print(PickedVal->getType(),
+ getOperandValue(PickedVal, ECStack[CurFrame]));
+ 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].CurMethod;
+ const Type *RetTy = F->getReturnType();
-void Interpreter::printStackTrace() {
- if (ECStack.empty()) cout << "No program executing!\n";
+ 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) cout << ", ";
+ CW << *I << "=";
+
+ printValue(I->getType(), getOperandValue(I, ECStack[FrameNo]));
+ }
- 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;
+ cout << ")\n";
+
+ if (FrameNo != int(ECStack.size()-1)) {
+ BasicBlock::iterator I = ECStack[FrameNo].CurInst;
+ CW << --I;
+ } else {
+ CW << *ECStack[FrameNo].CurInst;
}
}
+
projects / oota-llvm.git / blobdiff