1 //===-- Execution.cpp - Implement code to simulate the program ------------===//
3 // This file contains the actual instruction interpreter.
5 //===----------------------------------------------------------------------===//
7 #include "Interpreter.h"
8 #include "ExecutionAnnotations.h"
9 #include "llvm/Module.h"
10 #include "llvm/Instructions.h"
11 #include "llvm/DerivedTypes.h"
12 #include "llvm/Constants.h"
13 #include "llvm/Assembly/Writer.h"
14 #include "Support/CommandLine.h"
15 #include "Support/Statistic.h"
16 #include <math.h> // For fmod
20 Interpreter *TheEE = 0;
23 Statistic<> NumDynamicInsts("lli", "Number of dynamic instructions executed");
26 QuietMode("quiet", cl::desc("Do not emit any non-program output"),
30 QuietModeA("q", cl::desc("Alias for -quiet"), cl::aliasopt(QuietMode));
33 ArrayChecksEnabled("array-checks", cl::desc("Enable array bound checks"));
36 AbortOnExceptions("abort-on-exception",
37 cl::desc("Halt execution on a machine exception"));
40 // Create a TargetData structure to handle memory addressing and size/alignment
43 CachedWriter CW; // Object to accelerate printing of LLVM
45 #ifdef PROFILE_STRUCTURE_FIELDS
47 ProfileStructureFields("profilestructfields",
48 cl::desc("Profile Structure Field Accesses"));
50 static std::map<const StructType *, std::vector<unsigned> > FieldAccessCounts;
53 sigjmp_buf SignalRecoverBuffer;
54 static bool InInstruction = false;
57 static void SigHandler(int Signal) {
59 siglongjmp(SignalRecoverBuffer, Signal);
63 static void initializeSignalHandlers() {
64 struct sigaction Action;
65 Action.sa_handler = SigHandler;
66 Action.sa_flags = SA_SIGINFO;
67 sigemptyset(&Action.sa_mask);
68 sigaction(SIGSEGV, &Action, 0);
69 sigaction(SIGBUS, &Action, 0);
70 sigaction(SIGINT, &Action, 0);
71 sigaction(SIGFPE, &Action, 0);
75 //===----------------------------------------------------------------------===//
76 // Value Manipulation code
77 //===----------------------------------------------------------------------===//
79 static unsigned getOperandSlot(Value *V) {
80 SlotNumber *SN = (SlotNumber*)V->getAnnotation(SlotNumberAID);
81 assert(SN && "Operand does not have a slot number annotation!");
85 // Operations used by constant expr implementations...
86 static GenericValue executeCastOperation(Value *Src, const Type *DestTy,
87 ExecutionContext &SF);
88 static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
92 static GenericValue getOperandValue(Value *V, ExecutionContext &SF) {
93 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
94 switch (CE->getOpcode()) {
95 case Instruction::Cast:
96 return executeCastOperation(CE->getOperand(0), CE->getType(), SF);
97 case Instruction::GetElementPtr:
98 return TheEE->executeGEPOperation(CE->getOperand(0), CE->op_begin()+1,
100 case Instruction::Add:
101 return executeAddInst(getOperandValue(CE->getOperand(0), SF),
102 getOperandValue(CE->getOperand(1), SF),
105 std::cerr << "Unhandled ConstantExpr: " << CE << "\n";
107 return GenericValue();
109 } else if (Constant *CPV = dyn_cast<Constant>(V)) {
110 return TheEE->getConstantValue(CPV);
111 } else if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
112 return PTOGV(TheEE->getPointerToGlobal(GV));
114 unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
115 unsigned OpSlot = getOperandSlot(V);
116 assert(TyP < SF.Values.size() &&
117 OpSlot < SF.Values[TyP].size() && "Value out of range!");
118 return SF.Values[TyP][getOperandSlot(V)];
122 static void printOperandInfo(Value *V, ExecutionContext &SF) {
123 if (isa<Constant>(V)) {
124 std::cout << "Constant Pool Value\n";
125 } else if (isa<GlobalValue>(V)) {
126 std::cout << "Global Value\n";
128 unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
129 unsigned Slot = getOperandSlot(V);
130 std::cout << "Value=" << (void*)V << " TypeID=" << TyP << " Slot=" << Slot
131 << " Addr=" << &SF.Values[TyP][Slot] << " SF=" << &SF
134 const unsigned char *Buf = (const unsigned char*)&SF.Values[TyP][Slot];
135 for (unsigned i = 0; i < sizeof(GenericValue); ++i) {
136 unsigned char Cur = Buf[i];
137 std::cout << ( Cur >= 160?char((Cur>>4)+'A'-10):char((Cur>>4) + '0'))
138 << ((Cur&15) >= 10?char((Cur&15)+'A'-10):char((Cur&15) + '0'));
146 static void SetValue(Value *V, GenericValue Val, ExecutionContext &SF) {
147 unsigned TyP = V->getType()->getUniqueID(); // TypePlane for value
149 //std::cout << "Setting value: " << &SF.Values[TyP][getOperandSlot(V)]<< "\n";
150 SF.Values[TyP][getOperandSlot(V)] = Val;
154 //===----------------------------------------------------------------------===//
155 // Annotation Wrangling code
156 //===----------------------------------------------------------------------===//
158 void Interpreter::initializeExecutionEngine() {
160 AnnotationManager::registerAnnotationFactory(FunctionInfoAID,
161 &FunctionInfo::Create);
162 initializeSignalHandlers();
165 //===----------------------------------------------------------------------===//
166 // Binary Instruction Implementations
167 //===----------------------------------------------------------------------===//
169 #define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
170 case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; break
172 static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
175 switch (Ty->getPrimitiveID()) {
176 IMPLEMENT_BINARY_OPERATOR(+, UByte);
177 IMPLEMENT_BINARY_OPERATOR(+, SByte);
178 IMPLEMENT_BINARY_OPERATOR(+, UShort);
179 IMPLEMENT_BINARY_OPERATOR(+, Short);
180 IMPLEMENT_BINARY_OPERATOR(+, UInt);
181 IMPLEMENT_BINARY_OPERATOR(+, Int);
182 IMPLEMENT_BINARY_OPERATOR(+, ULong);
183 IMPLEMENT_BINARY_OPERATOR(+, Long);
184 IMPLEMENT_BINARY_OPERATOR(+, Float);
185 IMPLEMENT_BINARY_OPERATOR(+, Double);
187 std::cout << "Unhandled type for Add instruction: " << *Ty << "\n";
193 static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
196 switch (Ty->getPrimitiveID()) {
197 IMPLEMENT_BINARY_OPERATOR(-, UByte);
198 IMPLEMENT_BINARY_OPERATOR(-, SByte);
199 IMPLEMENT_BINARY_OPERATOR(-, UShort);
200 IMPLEMENT_BINARY_OPERATOR(-, Short);
201 IMPLEMENT_BINARY_OPERATOR(-, UInt);
202 IMPLEMENT_BINARY_OPERATOR(-, Int);
203 IMPLEMENT_BINARY_OPERATOR(-, ULong);
204 IMPLEMENT_BINARY_OPERATOR(-, Long);
205 IMPLEMENT_BINARY_OPERATOR(-, Float);
206 IMPLEMENT_BINARY_OPERATOR(-, Double);
208 std::cout << "Unhandled type for Sub instruction: " << *Ty << "\n";
214 static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
217 switch (Ty->getPrimitiveID()) {
218 IMPLEMENT_BINARY_OPERATOR(*, UByte);
219 IMPLEMENT_BINARY_OPERATOR(*, SByte);
220 IMPLEMENT_BINARY_OPERATOR(*, UShort);
221 IMPLEMENT_BINARY_OPERATOR(*, Short);
222 IMPLEMENT_BINARY_OPERATOR(*, UInt);
223 IMPLEMENT_BINARY_OPERATOR(*, Int);
224 IMPLEMENT_BINARY_OPERATOR(*, ULong);
225 IMPLEMENT_BINARY_OPERATOR(*, Long);
226 IMPLEMENT_BINARY_OPERATOR(*, Float);
227 IMPLEMENT_BINARY_OPERATOR(*, Double);
229 std::cout << "Unhandled type for Mul instruction: " << Ty << "\n";
235 static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
238 switch (Ty->getPrimitiveID()) {
239 IMPLEMENT_BINARY_OPERATOR(/, UByte);
240 IMPLEMENT_BINARY_OPERATOR(/, SByte);
241 IMPLEMENT_BINARY_OPERATOR(/, UShort);
242 IMPLEMENT_BINARY_OPERATOR(/, Short);
243 IMPLEMENT_BINARY_OPERATOR(/, UInt);
244 IMPLEMENT_BINARY_OPERATOR(/, Int);
245 IMPLEMENT_BINARY_OPERATOR(/, ULong);
246 IMPLEMENT_BINARY_OPERATOR(/, Long);
247 IMPLEMENT_BINARY_OPERATOR(/, Float);
248 IMPLEMENT_BINARY_OPERATOR(/, Double);
250 std::cout << "Unhandled type for Div instruction: " << *Ty << "\n";
256 static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
259 switch (Ty->getPrimitiveID()) {
260 IMPLEMENT_BINARY_OPERATOR(%, UByte);
261 IMPLEMENT_BINARY_OPERATOR(%, SByte);
262 IMPLEMENT_BINARY_OPERATOR(%, UShort);
263 IMPLEMENT_BINARY_OPERATOR(%, Short);
264 IMPLEMENT_BINARY_OPERATOR(%, UInt);
265 IMPLEMENT_BINARY_OPERATOR(%, Int);
266 IMPLEMENT_BINARY_OPERATOR(%, ULong);
267 IMPLEMENT_BINARY_OPERATOR(%, Long);
268 case Type::FloatTyID:
269 Dest.FloatVal = fmod(Src1.FloatVal, Src2.FloatVal);
271 case Type::DoubleTyID:
272 Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal);
275 std::cout << "Unhandled type for Rem instruction: " << *Ty << "\n";
281 static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
284 switch (Ty->getPrimitiveID()) {
285 IMPLEMENT_BINARY_OPERATOR(&, Bool);
286 IMPLEMENT_BINARY_OPERATOR(&, UByte);
287 IMPLEMENT_BINARY_OPERATOR(&, SByte);
288 IMPLEMENT_BINARY_OPERATOR(&, UShort);
289 IMPLEMENT_BINARY_OPERATOR(&, Short);
290 IMPLEMENT_BINARY_OPERATOR(&, UInt);
291 IMPLEMENT_BINARY_OPERATOR(&, Int);
292 IMPLEMENT_BINARY_OPERATOR(&, ULong);
293 IMPLEMENT_BINARY_OPERATOR(&, Long);
295 std::cout << "Unhandled type for And instruction: " << *Ty << "\n";
302 static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
305 switch (Ty->getPrimitiveID()) {
306 IMPLEMENT_BINARY_OPERATOR(|, Bool);
307 IMPLEMENT_BINARY_OPERATOR(|, UByte);
308 IMPLEMENT_BINARY_OPERATOR(|, SByte);
309 IMPLEMENT_BINARY_OPERATOR(|, UShort);
310 IMPLEMENT_BINARY_OPERATOR(|, Short);
311 IMPLEMENT_BINARY_OPERATOR(|, UInt);
312 IMPLEMENT_BINARY_OPERATOR(|, Int);
313 IMPLEMENT_BINARY_OPERATOR(|, ULong);
314 IMPLEMENT_BINARY_OPERATOR(|, Long);
316 std::cout << "Unhandled type for Or instruction: " << *Ty << "\n";
323 static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
326 switch (Ty->getPrimitiveID()) {
327 IMPLEMENT_BINARY_OPERATOR(^, Bool);
328 IMPLEMENT_BINARY_OPERATOR(^, UByte);
329 IMPLEMENT_BINARY_OPERATOR(^, SByte);
330 IMPLEMENT_BINARY_OPERATOR(^, UShort);
331 IMPLEMENT_BINARY_OPERATOR(^, Short);
332 IMPLEMENT_BINARY_OPERATOR(^, UInt);
333 IMPLEMENT_BINARY_OPERATOR(^, Int);
334 IMPLEMENT_BINARY_OPERATOR(^, ULong);
335 IMPLEMENT_BINARY_OPERATOR(^, Long);
337 std::cout << "Unhandled type for Xor instruction: " << *Ty << "\n";
344 #define IMPLEMENT_SETCC(OP, TY) \
345 case Type::TY##TyID: Dest.BoolVal = Src1.TY##Val OP Src2.TY##Val; break
347 // Handle pointers specially because they must be compared with only as much
348 // width as the host has. We _do not_ want to be comparing 64 bit values when
349 // running on a 32-bit target, otherwise the upper 32 bits might mess up
350 // comparisons if they contain garbage.
351 #define IMPLEMENT_POINTERSETCC(OP) \
352 case Type::PointerTyID: \
353 Dest.BoolVal = (void*)(intptr_t)Src1.PointerVal OP \
354 (void*)(intptr_t)Src2.PointerVal; break
356 static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
359 switch (Ty->getPrimitiveID()) {
360 IMPLEMENT_SETCC(==, UByte);
361 IMPLEMENT_SETCC(==, SByte);
362 IMPLEMENT_SETCC(==, UShort);
363 IMPLEMENT_SETCC(==, Short);
364 IMPLEMENT_SETCC(==, UInt);
365 IMPLEMENT_SETCC(==, Int);
366 IMPLEMENT_SETCC(==, ULong);
367 IMPLEMENT_SETCC(==, Long);
368 IMPLEMENT_SETCC(==, Float);
369 IMPLEMENT_SETCC(==, Double);
370 IMPLEMENT_POINTERSETCC(==);
372 std::cout << "Unhandled type for SetEQ instruction: " << *Ty << "\n";
378 static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
381 switch (Ty->getPrimitiveID()) {
382 IMPLEMENT_SETCC(!=, UByte);
383 IMPLEMENT_SETCC(!=, SByte);
384 IMPLEMENT_SETCC(!=, UShort);
385 IMPLEMENT_SETCC(!=, Short);
386 IMPLEMENT_SETCC(!=, UInt);
387 IMPLEMENT_SETCC(!=, Int);
388 IMPLEMENT_SETCC(!=, ULong);
389 IMPLEMENT_SETCC(!=, Long);
390 IMPLEMENT_SETCC(!=, Float);
391 IMPLEMENT_SETCC(!=, Double);
392 IMPLEMENT_POINTERSETCC(!=);
395 std::cout << "Unhandled type for SetNE instruction: " << *Ty << "\n";
401 static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
404 switch (Ty->getPrimitiveID()) {
405 IMPLEMENT_SETCC(<=, UByte);
406 IMPLEMENT_SETCC(<=, SByte);
407 IMPLEMENT_SETCC(<=, UShort);
408 IMPLEMENT_SETCC(<=, Short);
409 IMPLEMENT_SETCC(<=, UInt);
410 IMPLEMENT_SETCC(<=, Int);
411 IMPLEMENT_SETCC(<=, ULong);
412 IMPLEMENT_SETCC(<=, Long);
413 IMPLEMENT_SETCC(<=, Float);
414 IMPLEMENT_SETCC(<=, Double);
415 IMPLEMENT_POINTERSETCC(<=);
417 std::cout << "Unhandled type for SetLE instruction: " << Ty << "\n";
423 static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
426 switch (Ty->getPrimitiveID()) {
427 IMPLEMENT_SETCC(>=, UByte);
428 IMPLEMENT_SETCC(>=, SByte);
429 IMPLEMENT_SETCC(>=, UShort);
430 IMPLEMENT_SETCC(>=, Short);
431 IMPLEMENT_SETCC(>=, UInt);
432 IMPLEMENT_SETCC(>=, Int);
433 IMPLEMENT_SETCC(>=, ULong);
434 IMPLEMENT_SETCC(>=, Long);
435 IMPLEMENT_SETCC(>=, Float);
436 IMPLEMENT_SETCC(>=, Double);
437 IMPLEMENT_POINTERSETCC(>=);
439 std::cout << "Unhandled type for SetGE instruction: " << *Ty << "\n";
445 static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
448 switch (Ty->getPrimitiveID()) {
449 IMPLEMENT_SETCC(<, UByte);
450 IMPLEMENT_SETCC(<, SByte);
451 IMPLEMENT_SETCC(<, UShort);
452 IMPLEMENT_SETCC(<, Short);
453 IMPLEMENT_SETCC(<, UInt);
454 IMPLEMENT_SETCC(<, Int);
455 IMPLEMENT_SETCC(<, ULong);
456 IMPLEMENT_SETCC(<, Long);
457 IMPLEMENT_SETCC(<, Float);
458 IMPLEMENT_SETCC(<, Double);
459 IMPLEMENT_POINTERSETCC(<);
461 std::cout << "Unhandled type for SetLT instruction: " << *Ty << "\n";
467 static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
470 switch (Ty->getPrimitiveID()) {
471 IMPLEMENT_SETCC(>, UByte);
472 IMPLEMENT_SETCC(>, SByte);
473 IMPLEMENT_SETCC(>, UShort);
474 IMPLEMENT_SETCC(>, Short);
475 IMPLEMENT_SETCC(>, UInt);
476 IMPLEMENT_SETCC(>, Int);
477 IMPLEMENT_SETCC(>, ULong);
478 IMPLEMENT_SETCC(>, Long);
479 IMPLEMENT_SETCC(>, Float);
480 IMPLEMENT_SETCC(>, Double);
481 IMPLEMENT_POINTERSETCC(>);
483 std::cout << "Unhandled type for SetGT instruction: " << *Ty << "\n";
489 static void executeBinaryInst(BinaryOperator &I, ExecutionContext &SF) {
490 const Type *Ty = I.getOperand(0)->getType();
491 GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
492 GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
493 GenericValue R; // Result
495 switch (I.getOpcode()) {
496 case Instruction::Add: R = executeAddInst (Src1, Src2, Ty); break;
497 case Instruction::Sub: R = executeSubInst (Src1, Src2, Ty); break;
498 case Instruction::Mul: R = executeMulInst (Src1, Src2, Ty); break;
499 case Instruction::Div: R = executeDivInst (Src1, Src2, Ty); break;
500 case Instruction::Rem: R = executeRemInst (Src1, Src2, Ty); break;
501 case Instruction::And: R = executeAndInst (Src1, Src2, Ty); break;
502 case Instruction::Or: R = executeOrInst (Src1, Src2, Ty); break;
503 case Instruction::Xor: R = executeXorInst (Src1, Src2, Ty); break;
504 case Instruction::SetEQ: R = executeSetEQInst(Src1, Src2, Ty); break;
505 case Instruction::SetNE: R = executeSetNEInst(Src1, Src2, Ty); break;
506 case Instruction::SetLE: R = executeSetLEInst(Src1, Src2, Ty); break;
507 case Instruction::SetGE: R = executeSetGEInst(Src1, Src2, Ty); break;
508 case Instruction::SetLT: R = executeSetLTInst(Src1, Src2, Ty); break;
509 case Instruction::SetGT: R = executeSetGTInst(Src1, Src2, Ty); break;
511 std::cout << "Don't know how to handle this binary operator!\n-->" << I;
518 //===----------------------------------------------------------------------===//
519 // Terminator Instruction Implementations
520 //===----------------------------------------------------------------------===//
522 static void PerformExitStuff() {
523 #ifdef PROFILE_STRUCTURE_FIELDS
524 // Print out structure field accounting information...
525 if (!FieldAccessCounts.empty()) {
526 CW << "Profile Field Access Counts:\n";
527 std::map<const StructType *, std::vector<unsigned> >::iterator
528 I = FieldAccessCounts.begin(), E = FieldAccessCounts.end();
529 for (; I != E; ++I) {
530 std::vector<unsigned> &OfC = I->second;
531 CW << " '" << (Value*)I->first << "'\t- Sum=";
534 for (unsigned i = 0; i < OfC.size(); ++i)
538 for (unsigned i = 0; i < OfC.size(); ++i) {
546 CW << "Profile Field Access Percentages:\n";
547 std::cout.precision(3);
548 for (I = FieldAccessCounts.begin(); I != E; ++I) {
549 std::vector<unsigned> &OfC = I->second;
551 for (unsigned i = 0; i < OfC.size(); ++i)
554 CW << " '" << (Value*)I->first << "'\t- ";
555 for (unsigned i = 0; i < OfC.size(); ++i) {
557 CW << double(OfC[i])/Sum;
563 FieldAccessCounts.clear();
568 void Interpreter::exitCalled(GenericValue GV) {
570 std::cout << "Program returned ";
571 print(Type::IntTy, GV);
572 std::cout << " via 'void exit(int)'\n";
575 ExitCode = GV.SByteVal;
580 void Interpreter::executeRetInst(ReturnInst &I, ExecutionContext &SF) {
581 const Type *RetTy = 0;
584 // Save away the return value... (if we are not 'ret void')
585 if (I.getNumOperands()) {
586 RetTy = I.getReturnValue()->getType();
587 Result = getOperandValue(I.getReturnValue(), SF);
590 // Save previously executing meth
591 const Function *M = ECStack.back().CurFunction;
593 // Pop the current stack frame... this invalidates SF
596 if (ECStack.empty()) { // Finished main. Put result into exit code...
597 if (RetTy) { // Nonvoid return type?
599 CW << "Function " << M->getType() << " \"" << M->getName()
601 print(RetTy, Result);
605 if (RetTy->isIntegral())
606 ExitCode = Result.IntVal; // Capture the exit code of the program
615 // If we have a previous stack frame, and we have a previous call, fill in
616 // the return value...
618 ExecutionContext &NewSF = ECStack.back();
620 if (NewSF.Caller->getType() != Type::VoidTy) // Save result...
621 SetValue(NewSF.Caller, Result, NewSF);
623 NewSF.Caller = 0; // We returned from the call...
624 } else if (!QuietMode) {
625 // This must be a function that is executing because of a user 'call'
627 CW << "Function " << M->getType() << " \"" << M->getName()
629 print(RetTy, Result);
634 void Interpreter::executeBrInst(BranchInst &I, ExecutionContext &SF) {
637 Dest = I.getSuccessor(0); // Uncond branches have a fixed dest...
638 if (!I.isUnconditional()) {
639 Value *Cond = I.getCondition();
640 if (getOperandValue(Cond, SF).BoolVal == 0) // If false cond...
641 Dest = I.getSuccessor(1);
643 SwitchToNewBasicBlock(Dest, SF);
646 void Interpreter::executeSwitchInst(SwitchInst &I, ExecutionContext &SF) {
647 GenericValue CondVal = getOperandValue(I.getOperand(0), SF);
648 const Type *ElTy = I.getOperand(0)->getType();
650 // Check to see if any of the cases match...
651 BasicBlock *Dest = 0;
652 for (unsigned i = 2, e = I.getNumOperands(); i != e; i += 2)
653 if (executeSetEQInst(CondVal,
654 getOperandValue(I.getOperand(i), SF), ElTy).BoolVal) {
655 Dest = cast<BasicBlock>(I.getOperand(i+1));
659 if (!Dest) Dest = I.getDefaultDest(); // No cases matched: use default
660 SwitchToNewBasicBlock(Dest, SF);
663 // SwitchToNewBasicBlock - This method is used to jump to a new basic block.
664 // This function handles the actual updating of block and instruction iterators
665 // as well as execution of all of the PHI nodes in the destination block.
667 // This method does this because all of the PHI nodes must be executed
668 // atomically, reading their inputs before any of the results are updated. Not
669 // doing this can cause problems if the PHI nodes depend on other PHI nodes for
670 // their inputs. If the input PHI node is updated before it is read, incorrect
671 // results can happen. Thus we use a two phase approach.
673 void Interpreter::SwitchToNewBasicBlock(BasicBlock *Dest, ExecutionContext &SF){
674 BasicBlock *PrevBB = SF.CurBB; // Remember where we came from...
675 SF.CurBB = Dest; // Update CurBB to branch destination
676 SF.CurInst = SF.CurBB->begin(); // Update new instruction ptr...
678 if (!isa<PHINode>(SF.CurInst)) return; // Nothing fancy to do
680 // Loop over all of the PHI nodes in the current block, reading their inputs.
681 std::vector<GenericValue> ResultValues;
683 for (; PHINode *PN = dyn_cast<PHINode>(SF.CurInst); ++SF.CurInst) {
684 // Search for the value corresponding to this previous bb...
685 int i = PN->getBasicBlockIndex(PrevBB);
686 assert(i != -1 && "PHINode doesn't contain entry for predecessor??");
687 Value *IncomingValue = PN->getIncomingValue(i);
689 // Save the incoming value for this PHI node...
690 ResultValues.push_back(getOperandValue(IncomingValue, SF));
693 // Now loop over all of the PHI nodes setting their values...
694 SF.CurInst = SF.CurBB->begin();
695 for (unsigned i = 0; PHINode *PN = dyn_cast<PHINode>(SF.CurInst);
697 SetValue(PN, ResultValues[i], SF);
701 //===----------------------------------------------------------------------===//
702 // Memory Instruction Implementations
703 //===----------------------------------------------------------------------===//
705 void Interpreter::executeAllocInst(AllocationInst &I, ExecutionContext &SF) {
706 const Type *Ty = I.getType()->getElementType(); // Type to be allocated
708 // Get the number of elements being allocated by the array...
709 unsigned NumElements = getOperandValue(I.getOperand(0), SF).UIntVal;
711 // Allocate enough memory to hold the type...
712 // FIXME: Don't use CALLOC, use a tainted malloc.
713 void *Memory = calloc(NumElements, TD.getTypeSize(Ty));
715 GenericValue Result = PTOGV(Memory);
716 assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");
717 SetValue(&I, Result, SF);
719 if (I.getOpcode() == Instruction::Alloca)
720 ECStack.back().Allocas.add(Memory);
723 static void executeFreeInst(FreeInst &I, ExecutionContext &SF) {
724 assert(isa<PointerType>(I.getOperand(0)->getType()) && "Freeing nonptr?");
725 GenericValue Value = getOperandValue(I.getOperand(0), SF);
726 // TODO: Check to make sure memory is allocated
727 free(GVTOP(Value)); // Free memory
731 // getElementOffset - The workhorse for getelementptr.
733 GenericValue Interpreter::executeGEPOperation(Value *Ptr, User::op_iterator I,
735 ExecutionContext &SF) {
736 assert(isa<PointerType>(Ptr->getType()) &&
737 "Cannot getElementOffset of a nonpointer type!");
740 const Type *Ty = Ptr->getType();
742 for (; I != E; ++I) {
743 if (const StructType *STy = dyn_cast<StructType>(Ty)) {
744 const StructLayout *SLO = TD.getStructLayout(STy);
746 // Indicies must be ubyte constants...
747 const ConstantUInt *CPU = cast<ConstantUInt>(*I);
748 assert(CPU->getType() == Type::UByteTy);
749 unsigned Index = CPU->getValue();
751 #ifdef PROFILE_STRUCTURE_FIELDS
752 if (ProfileStructureFields) {
753 // Do accounting for this field...
754 std::vector<unsigned> &OfC = FieldAccessCounts[STy];
755 if (OfC.size() == 0) OfC.resize(STy->getElementTypes().size());
760 Total += SLO->MemberOffsets[Index];
761 Ty = STy->getElementTypes()[Index];
762 } else if (const SequentialType *ST = cast<SequentialType>(Ty)) {
764 // Get the index number for the array... which must be long type...
765 assert((*I)->getType() == Type::LongTy);
766 unsigned Idx = getOperandValue(*I, SF).LongVal;
767 if (const ArrayType *AT = dyn_cast<ArrayType>(ST))
768 if (Idx >= AT->getNumElements() && ArrayChecksEnabled) {
769 std::cerr << "Out of range memory access to element #" << Idx
770 << " of a " << AT->getNumElements() << " element array."
771 << " Subscript #" << *I << "\n";
773 siglongjmp(SignalRecoverBuffer, SIGTRAP);
776 Ty = ST->getElementType();
777 unsigned Size = TD.getTypeSize(Ty);
783 Result.PointerVal = getOperandValue(Ptr, SF).PointerVal + Total;
787 static void executeGEPInst(GetElementPtrInst &I, ExecutionContext &SF) {
788 SetValue(&I, TheEE->executeGEPOperation(I.getPointerOperand(),
789 I.idx_begin(), I.idx_end(), SF), SF);
792 void Interpreter::executeLoadInst(LoadInst &I, ExecutionContext &SF) {
793 GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
794 GenericValue *Ptr = (GenericValue*)GVTOP(SRC);
795 GenericValue Result = LoadValueFromMemory(Ptr, I.getType());
796 SetValue(&I, Result, SF);
799 void Interpreter::executeStoreInst(StoreInst &I, ExecutionContext &SF) {
800 GenericValue Val = getOperandValue(I.getOperand(0), SF);
801 GenericValue SRC = getOperandValue(I.getPointerOperand(), SF);
802 StoreValueToMemory(Val, (GenericValue *)GVTOP(SRC),
803 I.getOperand(0)->getType());
808 //===----------------------------------------------------------------------===//
809 // Miscellaneous Instruction Implementations
810 //===----------------------------------------------------------------------===//
812 void Interpreter::executeCallInst(CallInst &I, ExecutionContext &SF) {
813 ECStack.back().Caller = &I;
814 std::vector<GenericValue> ArgVals;
815 ArgVals.reserve(I.getNumOperands()-1);
816 for (unsigned i = 1; i < I.getNumOperands(); ++i) {
817 ArgVals.push_back(getOperandValue(I.getOperand(i), SF));
818 // Promote all integral types whose size is < sizeof(int) into ints. We do
819 // this by zero or sign extending the value as appropriate according to the
821 if (I.getOperand(i)->getType()->isIntegral() &&
822 I.getOperand(i)->getType()->getPrimitiveSize() < 4) {
823 const Type *Ty = I.getOperand(i)->getType();
824 if (Ty == Type::ShortTy)
825 ArgVals.back().IntVal = ArgVals.back().ShortVal;
826 else if (Ty == Type::UShortTy)
827 ArgVals.back().UIntVal = ArgVals.back().UShortVal;
828 else if (Ty == Type::SByteTy)
829 ArgVals.back().IntVal = ArgVals.back().SByteVal;
830 else if (Ty == Type::UByteTy)
831 ArgVals.back().UIntVal = ArgVals.back().UByteVal;
832 else if (Ty == Type::BoolTy)
833 ArgVals.back().UIntVal = ArgVals.back().BoolVal;
835 assert(0 && "Unknown type!");
839 // To handle indirect calls, we must get the pointer value from the argument
840 // and treat it as a function pointer.
841 GenericValue SRC = getOperandValue(I.getCalledValue(), SF);
843 callFunction((Function*)GVTOP(SRC), ArgVals);
846 #define IMPLEMENT_SHIFT(OP, TY) \
847 case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.UByteVal; break
849 static void executeShlInst(ShiftInst &I, ExecutionContext &SF) {
850 const Type *Ty = I.getOperand(0)->getType();
851 GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
852 GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
855 switch (Ty->getPrimitiveID()) {
856 IMPLEMENT_SHIFT(<<, UByte);
857 IMPLEMENT_SHIFT(<<, SByte);
858 IMPLEMENT_SHIFT(<<, UShort);
859 IMPLEMENT_SHIFT(<<, Short);
860 IMPLEMENT_SHIFT(<<, UInt);
861 IMPLEMENT_SHIFT(<<, Int);
862 IMPLEMENT_SHIFT(<<, ULong);
863 IMPLEMENT_SHIFT(<<, Long);
865 std::cout << "Unhandled type for Shl instruction: " << *Ty << "\n";
867 SetValue(&I, Dest, SF);
870 static void executeShrInst(ShiftInst &I, ExecutionContext &SF) {
871 const Type *Ty = I.getOperand(0)->getType();
872 GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
873 GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
876 switch (Ty->getPrimitiveID()) {
877 IMPLEMENT_SHIFT(>>, UByte);
878 IMPLEMENT_SHIFT(>>, SByte);
879 IMPLEMENT_SHIFT(>>, UShort);
880 IMPLEMENT_SHIFT(>>, Short);
881 IMPLEMENT_SHIFT(>>, UInt);
882 IMPLEMENT_SHIFT(>>, Int);
883 IMPLEMENT_SHIFT(>>, ULong);
884 IMPLEMENT_SHIFT(>>, Long);
886 std::cout << "Unhandled type for Shr instruction: " << *Ty << "\n";
889 SetValue(&I, Dest, SF);
892 #define IMPLEMENT_CAST(DTY, DCTY, STY) \
893 case Type::STY##TyID: Dest.DTY##Val = DCTY Src.STY##Val; break;
895 #define IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY) \
896 case Type::DESTTY##TyID: \
897 switch (SrcTy->getPrimitiveID()) { \
898 IMPLEMENT_CAST(DESTTY, DESTCTY, Bool); \
899 IMPLEMENT_CAST(DESTTY, DESTCTY, UByte); \
900 IMPLEMENT_CAST(DESTTY, DESTCTY, SByte); \
901 IMPLEMENT_CAST(DESTTY, DESTCTY, UShort); \
902 IMPLEMENT_CAST(DESTTY, DESTCTY, Short); \
903 IMPLEMENT_CAST(DESTTY, DESTCTY, UInt); \
904 IMPLEMENT_CAST(DESTTY, DESTCTY, Int); \
905 IMPLEMENT_CAST(DESTTY, DESTCTY, ULong); \
906 IMPLEMENT_CAST(DESTTY, DESTCTY, Long); \
907 IMPLEMENT_CAST(DESTTY, DESTCTY, Pointer);
909 #define IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY) \
910 IMPLEMENT_CAST(DESTTY, DESTCTY, Float); \
911 IMPLEMENT_CAST(DESTTY, DESTCTY, Double)
913 #define IMPLEMENT_CAST_CASE_END() \
914 default: std::cout << "Unhandled cast: " << SrcTy << " to " << Ty << "\n"; \
919 #define IMPLEMENT_CAST_CASE(DESTTY, DESTCTY) \
920 IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY); \
921 IMPLEMENT_CAST_CASE_FP_IMP(DESTTY, DESTCTY); \
922 IMPLEMENT_CAST_CASE_END()
924 static GenericValue executeCastOperation(Value *SrcVal, const Type *Ty,
925 ExecutionContext &SF) {
926 const Type *SrcTy = SrcVal->getType();
927 GenericValue Dest, Src = getOperandValue(SrcVal, SF);
929 switch (Ty->getPrimitiveID()) {
930 IMPLEMENT_CAST_CASE(UByte , (unsigned char));
931 IMPLEMENT_CAST_CASE(SByte , ( signed char));
932 IMPLEMENT_CAST_CASE(UShort , (unsigned short));
933 IMPLEMENT_CAST_CASE(Short , ( signed short));
934 IMPLEMENT_CAST_CASE(UInt , (unsigned int ));
935 IMPLEMENT_CAST_CASE(Int , ( signed int ));
936 IMPLEMENT_CAST_CASE(ULong , (uint64_t));
937 IMPLEMENT_CAST_CASE(Long , ( int64_t));
938 IMPLEMENT_CAST_CASE(Pointer, (PointerTy));
939 IMPLEMENT_CAST_CASE(Float , (float));
940 IMPLEMENT_CAST_CASE(Double , (double));
941 IMPLEMENT_CAST_CASE(Bool , (bool));
943 std::cout << "Unhandled dest type for cast instruction: " << *Ty << "\n";
951 static void executeCastInst(CastInst &I, ExecutionContext &SF) {
952 SetValue(&I, executeCastOperation(I.getOperand(0), I.getType(), SF), SF);
955 static void executeVarArgInst(VarArgInst &I, ExecutionContext &SF) {
956 // Get the pointer to the valist element. LLI treats the valist in memory as
958 GenericValue VAListPtr = getOperandValue(I.getOperand(0), SF);
961 GenericValue VAList =
962 TheEE->LoadValueFromMemory((GenericValue *)GVTOP(VAListPtr), Type::UIntTy);
964 unsigned Argument = VAList.IntVal++;
966 // Update the valist to point to the next argument...
967 TheEE->StoreValueToMemory(VAList, (GenericValue *)GVTOP(VAListPtr),
971 assert(Argument < SF.VarArgs.size() &&
972 "Accessing past the last vararg argument!");
973 SetValue(&I, SF.VarArgs[Argument], SF);
976 //===----------------------------------------------------------------------===//
977 // Dispatch and Execution Code
978 //===----------------------------------------------------------------------===//
980 FunctionInfo::FunctionInfo(Function *F) : Annotation(FunctionInfoAID) {
981 // Assign slot numbers to the function arguments...
982 for (Function::const_aiterator AI = F->abegin(), E = F->aend(); AI != E; ++AI)
983 AI->addAnnotation(new SlotNumber(getValueSlot(AI)));
985 // Iterate over all of the instructions...
986 unsigned InstNum = 0;
987 for (Function::iterator BB = F->begin(), BBE = F->end(); BB != BBE; ++BB)
988 for (BasicBlock::iterator II = BB->begin(), IE = BB->end(); II != IE; ++II)
989 // For each instruction... Add Annote
990 II->addAnnotation(new InstNumber(++InstNum, getValueSlot(II)));
993 unsigned FunctionInfo::getValueSlot(const Value *V) {
994 unsigned Plane = V->getType()->getUniqueID();
995 if (Plane >= NumPlaneElements.size())
996 NumPlaneElements.resize(Plane+1, 0);
997 return NumPlaneElements[Plane]++;
1001 //===----------------------------------------------------------------------===//
1002 // callFunction - Execute the specified function...
1004 void Interpreter::callFunction(Function *F,
1005 const std::vector<GenericValue> &ArgVals) {
1006 assert((ECStack.empty() || ECStack.back().Caller == 0 ||
1007 ECStack.back().Caller->getNumOperands()-1 == ArgVals.size()) &&
1008 "Incorrect number of arguments passed into function call!");
1009 if (F->isExternal()) {
1010 GenericValue Result = callExternalFunction(F, ArgVals);
1011 const Type *RetTy = F->getReturnType();
1013 // Copy the result back into the result variable if we are not returning
1015 if (RetTy != Type::VoidTy) {
1016 if (!ECStack.empty() && ECStack.back().Caller) {
1017 ExecutionContext &SF = ECStack.back();
1018 SetValue(SF.Caller, Result, SF);
1020 SF.Caller = 0; // We returned from the call...
1021 } else if (!QuietMode) {
1023 CW << "Function " << F->getType() << " \"" << F->getName()
1025 print(RetTy, Result);
1028 if (RetTy->isIntegral())
1029 ExitCode = Result.IntVal; // Capture the exit code of the program
1036 // Process the function, assigning instruction numbers to the instructions in
1037 // the function. Also calculate the number of values for each type slot
1040 FunctionInfo *FuncInfo =
1041 (FunctionInfo*)F->getOrCreateAnnotation(FunctionInfoAID);
1042 ECStack.push_back(ExecutionContext()); // Make a new stack frame...
1044 ExecutionContext &StackFrame = ECStack.back(); // Fill it in...
1045 StackFrame.CurFunction = F;
1046 StackFrame.CurBB = F->begin();
1047 StackFrame.CurInst = StackFrame.CurBB->begin();
1048 StackFrame.FuncInfo = FuncInfo;
1050 // Initialize the values to nothing...
1051 StackFrame.Values.resize(FuncInfo->NumPlaneElements.size());
1052 for (unsigned i = 0; i < FuncInfo->NumPlaneElements.size(); ++i) {
1053 StackFrame.Values[i].resize(FuncInfo->NumPlaneElements[i]);
1055 // Taint the initial values of stuff
1056 memset(&StackFrame.Values[i][0], 42,
1057 FuncInfo->NumPlaneElements[i]*sizeof(GenericValue));
1061 // Run through the function arguments and initialize their values...
1062 assert((ArgVals.size() == F->asize() ||
1063 (ArgVals.size() > F->asize() && F->getFunctionType()->isVarArg())) &&
1064 "Invalid number of values passed to function invocation!");
1066 // Handle non-varargs arguments...
1068 for (Function::aiterator AI = F->abegin(), E = F->aend(); AI != E; ++AI, ++i)
1069 SetValue(AI, ArgVals[i], StackFrame);
1071 // Handle varargs arguments...
1072 StackFrame.VarArgs.assign(ArgVals.begin()+i, ArgVals.end());
1075 // executeInstruction - Interpret a single instruction, increment the "PC", and
1076 // return true if the next instruction is a breakpoint...
1078 bool Interpreter::executeInstruction() {
1079 assert(!ECStack.empty() && "No program running, cannot execute inst!");
1081 ExecutionContext &SF = ECStack.back(); // Current stack frame
1082 Instruction &I = *SF.CurInst++; // Increment before execute
1087 // Track the number of dynamic instructions executed.
1090 // Set a sigsetjmp buffer so that we can recover if an error happens during
1091 // instruction execution...
1093 if (int SigNo = sigsetjmp(SignalRecoverBuffer, 1)) {
1094 --SF.CurInst; // Back up to erroring instruction
1095 if (SigNo != SIGINT) {
1096 std::cout << "EXCEPTION OCCURRED [" << strsignal(SigNo) << "]:\n";
1098 // If -abort-on-exception was specified, terminate LLI instead of trying
1101 if (AbortOnExceptions) exit(1);
1102 } else if (SigNo == SIGINT) {
1103 std::cout << "CTRL-C Detected, execution halted.\n";
1105 InInstruction = false;
1109 InInstruction = true;
1110 if (I.isBinaryOp()) {
1111 executeBinaryInst(cast<BinaryOperator>(I), SF);
1113 switch (I.getOpcode()) {
1115 case Instruction::Ret: executeRetInst (cast<ReturnInst>(I), SF); break;
1116 case Instruction::Br: executeBrInst (cast<BranchInst>(I), SF); break;
1117 case Instruction::Switch: executeSwitchInst(cast<SwitchInst>(I), SF);break;
1118 // Invoke not handled!
1120 // Memory Instructions
1121 case Instruction::Alloca:
1122 case Instruction::Malloc: executeAllocInst((AllocationInst&)I, SF); break;
1123 case Instruction::Free: executeFreeInst (cast<FreeInst> (I), SF); break;
1124 case Instruction::Load: executeLoadInst (cast<LoadInst> (I), SF); break;
1125 case Instruction::Store: executeStoreInst(cast<StoreInst>(I), SF); break;
1126 case Instruction::GetElementPtr:
1127 executeGEPInst(cast<GetElementPtrInst>(I), SF); break;
1129 // Miscellaneous Instructions
1130 case Instruction::Call: executeCallInst (cast<CallInst> (I), SF); break;
1131 case Instruction::PHINode: assert(0 && "PHI nodes already handled!");
1132 case Instruction::Cast: executeCastInst (cast<CastInst> (I), SF); break;
1133 case Instruction::Shl: executeShlInst (cast<ShiftInst>(I), SF); break;
1134 case Instruction::Shr: executeShrInst (cast<ShiftInst>(I), SF); break;
1135 case Instruction::VarArg: executeVarArgInst(cast<VarArgInst>(I),SF); break;
1137 std::cout << "Don't know how to execute this instruction!\n-->" << I;
1141 InInstruction = false;
1143 // Reset the current frame location to the top of stack
1144 CurFrame = ECStack.size()-1;
1146 if (CurFrame == -1) return false; // No breakpoint if no code
1148 // Return true if there is a breakpoint annotation on the instruction...
1149 return ECStack[CurFrame].CurInst->getAnnotation(BreakpointAID) != 0;
1152 void Interpreter::stepInstruction() { // Do the 'step' command
1153 if (ECStack.empty()) {
1154 std::cout << "Error: no program running, cannot step!\n";
1158 // Run an instruction...
1159 executeInstruction();
1161 // Print the next instruction to execute...
1162 printCurrentInstruction();
1166 void Interpreter::nextInstruction() { // Do the 'next' command
1167 if (ECStack.empty()) {
1168 std::cout << "Error: no program running, cannot 'next'!\n";
1172 // If this is a call instruction, step over the call instruction...
1173 // TODO: ICALL, CALL WITH, ...
1174 if (ECStack.back().CurInst->getOpcode() == Instruction::Call) {
1175 unsigned StackSize = ECStack.size();
1176 // Step into the function...
1177 if (executeInstruction()) {
1178 // Hit a breakpoint, print current instruction, then return to user...
1179 std::cout << "Breakpoint hit!\n";
1180 printCurrentInstruction();
1184 // If we we able to step into the function, finish it now. We might not be
1185 // able the step into a function, if it's external for example.
1186 if (ECStack.size() != StackSize)
1187 finish(); // Finish executing the function...
1189 printCurrentInstruction();
1192 // Normal instruction, just step...
1197 void Interpreter::run() {
1198 if (ECStack.empty()) {
1199 std::cout << "Error: no program running, cannot run!\n";
1203 bool HitBreakpoint = false;
1204 while (!ECStack.empty() && !HitBreakpoint) {
1205 // Run an instruction...
1206 HitBreakpoint = executeInstruction();
1210 std::cout << "Breakpoint hit!\n";
1212 // Print the next instruction to execute...
1213 printCurrentInstruction();
1216 void Interpreter::finish() {
1217 if (ECStack.empty()) {
1218 std::cout << "Error: no program running, cannot run!\n";
1222 unsigned StackSize = ECStack.size();
1223 bool HitBreakpoint = false;
1224 while (ECStack.size() >= StackSize && !HitBreakpoint) {
1225 // Run an instruction...
1226 HitBreakpoint = executeInstruction();
1230 std::cout << "Breakpoint hit!\n";
1232 // Print the next instruction to execute...
1233 printCurrentInstruction();
1238 // printCurrentInstruction - Print out the instruction that the virtual PC is
1239 // at, or fail silently if no program is running.
1241 void Interpreter::printCurrentInstruction() {
1242 if (!ECStack.empty()) {
1243 if (ECStack.back().CurBB->begin() == ECStack.back().CurInst) // print label
1244 WriteAsOperand(std::cout, ECStack.back().CurBB) << ":\n";
1246 Instruction &I = *ECStack.back().CurInst;
1247 InstNumber *IN = (InstNumber*)I.getAnnotation(SlotNumberAID);
1248 assert(IN && "Instruction has no numbering annotation!");
1249 std::cout << "#" << IN->InstNum << I;
1253 void Interpreter::printValue(const Type *Ty, GenericValue V) {
1254 switch (Ty->getPrimitiveID()) {
1255 case Type::BoolTyID: std::cout << (V.BoolVal?"true":"false"); break;
1256 case Type::SByteTyID:
1257 std::cout << (int)V.SByteVal << " '" << V.SByteVal << "'"; break;
1258 case Type::UByteTyID:
1259 std::cout << (unsigned)V.UByteVal << " '" << V.UByteVal << "'"; break;
1260 case Type::ShortTyID: std::cout << V.ShortVal; break;
1261 case Type::UShortTyID: std::cout << V.UShortVal; break;
1262 case Type::IntTyID: std::cout << V.IntVal; break;
1263 case Type::UIntTyID: std::cout << V.UIntVal; break;
1264 case Type::LongTyID: std::cout << (long)V.LongVal; break;
1265 case Type::ULongTyID: std::cout << (unsigned long)V.ULongVal; break;
1266 case Type::FloatTyID: std::cout << V.FloatVal; break;
1267 case Type::DoubleTyID: std::cout << V.DoubleVal; break;
1268 case Type::PointerTyID:std::cout << (void*)GVTOP(V); break;
1270 std::cout << "- Don't know how to print value of this type!";
1275 void Interpreter::print(const Type *Ty, GenericValue V) {
1280 void Interpreter::print(const std::string &Name) {
1281 Value *PickedVal = ChooseOneOption(Name, LookupMatchingNames(Name));
1282 if (!PickedVal) return;
1284 if (const Function *F = dyn_cast<const Function>(PickedVal)) {
1285 CW << F; // Print the function
1286 } else if (const Type *Ty = dyn_cast<const Type>(PickedVal)) {
1287 CW << "type %" << Name << " = " << Ty->getDescription() << "\n";
1288 } else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(PickedVal)) {
1289 CW << BB; // Print the basic block
1290 } else { // Otherwise there should be an annotation for the slot#
1291 print(PickedVal->getType(),
1292 getOperandValue(PickedVal, ECStack[CurFrame]));
1297 void Interpreter::infoValue(const std::string &Name) {
1298 Value *PickedVal = ChooseOneOption(Name, LookupMatchingNames(Name));
1299 if (!PickedVal) return;
1301 std::cout << "Value: ";
1302 print(PickedVal->getType(),
1303 getOperandValue(PickedVal, ECStack[CurFrame]));
1305 printOperandInfo(PickedVal, ECStack[CurFrame]);
1308 // printStackFrame - Print information about the specified stack frame, or -1
1309 // for the default one.
1311 void Interpreter::printStackFrame(int FrameNo) {
1312 if (FrameNo == -1) FrameNo = CurFrame;
1313 Function *F = ECStack[FrameNo].CurFunction;
1314 const Type *RetTy = F->getReturnType();
1316 CW << ((FrameNo == CurFrame) ? '>' : '-') << "#" << FrameNo << ". "
1317 << (Value*)RetTy << " \"" << F->getName() << "\"(";
1320 for (Function::aiterator I = F->abegin(), E = F->aend(); I != E; ++I, ++i) {
1321 if (i != 0) std::cout << ", ";
1324 printValue(I->getType(), getOperandValue(I, ECStack[FrameNo]));
1329 if (FrameNo != int(ECStack.size()-1)) {
1330 BasicBlock::iterator I = ECStack[FrameNo].CurInst;
1333 CW << *ECStack[FrameNo].CurInst;