//===-- Execution.cpp - Implement code to simulate the program ------------===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
-//
+//
// This file contains the actual instruction interpreter.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "interpreter"
-
#include "Interpreter.h"
-#include "llvm/Instructions.h"
-#include "llvm/DerivedTypes.h"
#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Instructions.h"
+#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
-#include "Support/Statistic.h"
-#include "Support/Debug.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Support/Debug.h"
#include <cmath> // For fmod
using namespace llvm;
namespace {
Statistic<> NumDynamicInsts("lli", "Number of dynamic instructions executed");
-}
-namespace llvm {
Interpreter *TheEE = 0;
}
+
//===----------------------------------------------------------------------===//
// Value Manipulation code
//===----------------------------------------------------------------------===//
-static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeShlInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-static GenericValue executeShrInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty);
-
+
+static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeShlInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeShrInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty);
+static GenericValue executeSelectInst(GenericValue Src1, GenericValue Src2,
+ GenericValue Src3);
+
GenericValue Interpreter::getConstantExprValue (ConstantExpr *CE,
ExecutionContext &SF) {
switch (CE->getOpcode()) {
return executeShrInst(getOperandValue(CE->getOperand(0), SF),
getOperandValue(CE->getOperand(1), SF),
CE->getOperand(0)->getType());
-
+ case Instruction::Select:
+ return executeSelectInst(getOperandValue(CE->getOperand(0), SF),
+ getOperandValue(CE->getOperand(1), SF),
+ getOperandValue(CE->getOperand(2), SF));
default:
- std::cerr << "Unhandled ConstantExpr: " << CE << "\n";
+ std::cerr << "Unhandled ConstantExpr: " << *CE << "\n";
abort();
return GenericValue();
}
#define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
case Type::TY##TyID: Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; break
-static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeAddInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(+, UByte);
IMPLEMENT_BINARY_OPERATOR(+, SByte);
IMPLEMENT_BINARY_OPERATOR(+, UShort);
return Dest;
}
-static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSubInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(-, UByte);
IMPLEMENT_BINARY_OPERATOR(-, SByte);
IMPLEMENT_BINARY_OPERATOR(-, UShort);
return Dest;
}
-static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeMulInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(*, UByte);
IMPLEMENT_BINARY_OPERATOR(*, SByte);
IMPLEMENT_BINARY_OPERATOR(*, UShort);
IMPLEMENT_BINARY_OPERATOR(*, Float);
IMPLEMENT_BINARY_OPERATOR(*, Double);
default:
- std::cout << "Unhandled type for Mul instruction: " << Ty << "\n";
+ std::cout << "Unhandled type for Mul instruction: " << *Ty << "\n";
abort();
}
return Dest;
}
-static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeDivInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(/, UByte);
IMPLEMENT_BINARY_OPERATOR(/, SByte);
IMPLEMENT_BINARY_OPERATOR(/, UShort);
return Dest;
}
-static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeRemInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(%, UByte);
IMPLEMENT_BINARY_OPERATOR(%, SByte);
IMPLEMENT_BINARY_OPERATOR(%, UShort);
return Dest;
}
-static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeAndInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(&, Bool);
IMPLEMENT_BINARY_OPERATOR(&, UByte);
IMPLEMENT_BINARY_OPERATOR(&, SByte);
return Dest;
}
-static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
+static GenericValue executeOrInst(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(|, Bool);
IMPLEMENT_BINARY_OPERATOR(|, UByte);
IMPLEMENT_BINARY_OPERATOR(|, SByte);
return Dest;
}
-static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
+static GenericValue executeXorInst(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(^, Bool);
IMPLEMENT_BINARY_OPERATOR(^, UByte);
IMPLEMENT_BINARY_OPERATOR(^, SByte);
Dest.BoolVal = (void*)(intptr_t)Src1.PointerVal OP \
(void*)(intptr_t)Src2.PointerVal; break
-static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSetEQInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SETCC(==, UByte);
IMPLEMENT_SETCC(==, SByte);
IMPLEMENT_SETCC(==, UShort);
return Dest;
}
-static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSetNEInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SETCC(!=, UByte);
IMPLEMENT_SETCC(!=, SByte);
IMPLEMENT_SETCC(!=, UShort);
return Dest;
}
-static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSetLEInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SETCC(<=, UByte);
IMPLEMENT_SETCC(<=, SByte);
IMPLEMENT_SETCC(<=, UShort);
IMPLEMENT_SETCC(<=, Double);
IMPLEMENT_POINTERSETCC(<=);
default:
- std::cout << "Unhandled type for SetLE instruction: " << Ty << "\n";
+ std::cout << "Unhandled type for SetLE instruction: " << *Ty << "\n";
abort();
}
return Dest;
}
-static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSetGEInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SETCC(>=, UByte);
IMPLEMENT_SETCC(>=, SByte);
IMPLEMENT_SETCC(>=, UShort);
return Dest;
}
-static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSetLTInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SETCC(<, UByte);
IMPLEMENT_SETCC(<, SByte);
IMPLEMENT_SETCC(<, UShort);
return Dest;
}
-static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
- const Type *Ty) {
+static GenericValue executeSetGTInst(GenericValue Src1, GenericValue Src2,
+ const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SETCC(>, UByte);
IMPLEMENT_SETCC(>, SByte);
IMPLEMENT_SETCC(>, UShort);
SetValue(&I, R, SF);
}
+static GenericValue executeSelectInst(GenericValue Src1, GenericValue Src2,
+ GenericValue Src3) {
+ return Src1.BoolVal ? Src2 : Src3;
+}
+
+void Interpreter::visitSelectInst(SelectInst &I) {
+ ExecutionContext &SF = ECStack.back();
+ GenericValue Src1 = getOperandValue(I.getOperand(0), SF);
+ GenericValue Src2 = getOperandValue(I.getOperand(1), SF);
+ GenericValue Src3 = getOperandValue(I.getOperand(2), SF);
+ GenericValue R = executeSelectInst(Src1, Src2, Src3);
+ SetValue(&I, R, SF);
+}
+
+
//===----------------------------------------------------------------------===//
// Terminator Instruction Implementations
//===----------------------------------------------------------------------===//
void Interpreter::exitCalled(GenericValue GV) {
+ // runAtExitHandlers() assumes there are no stack frames, but
+ // if exit() was called, then it had a stack frame. Blow away
+ // the stack before interpreting atexit handlers.
+ ECStack.clear ();
runAtExitHandlers ();
exit (GV.IntVal);
}
/// Pop the last stack frame off of ECStack and then copy the result
/// back into the result variable if we are not returning void. The
-/// result variable may be the ExitCode, or the Value of the calling
+/// result variable may be the ExitValue, or the Value of the calling
/// CallInst if there was a previous stack frame. This method may
/// invalidate any ECStack iterators you have. This method also takes
/// care of switching to the normal destination BB, if we are returning
// Pop the current stack frame.
ECStack.pop_back();
- if (ECStack.empty()) { // Finished main. Put result into exit code...
- if (RetTy && RetTy->isIntegral()) { // Nonvoid return type?
- ExitCode = Result.IntVal; // Capture the exit code of the program
- } else {
- ExitCode = 0;
- }
- } else {
- // If we have a previous stack frame, and we have a previous call,
- // fill in the return value...
+ if (ECStack.empty()) { // Finished main. Put result into exit code...
+ if (RetTy && RetTy->isIntegral()) { // Nonvoid return type?
+ ExitValue = Result; // Capture the exit value of the program
+ } else {
+ memset(&ExitValue, 0, sizeof(ExitValue));
+ }
+ } else {
+ // If we have a previous stack frame, and we have a previous call,
+ // fill in the return value...
ExecutionContext &CallingSF = ECStack.back();
if (Instruction *I = CallingSF.Caller.getInstruction()) {
if (CallingSF.Caller.getType() != Type::VoidTy) // Save result...
InvokingSF.Caller = CallSite ();
// Go to exceptional destination BB of invoke instruction
- SwitchToNewBasicBlock (cast<InvokeInst> (Inst)->getExceptionalDest (),
- InvokingSF);
+ SwitchToNewBasicBlock(cast<InvokeInst>(Inst)->getUnwindDest(), InvokingSF);
+}
+
+void Interpreter::visitUnreachableInst(UnreachableInst &I) {
+ std::cerr << "ERROR: Program executed an 'unreachable' instruction!\n";
+ abort();
}
void Interpreter::visitBranchInst(BranchInst &I) {
if (!I.isUnconditional()) {
Value *Cond = I.getCondition();
if (getOperandValue(Cond, SF).BoolVal == 0) // If false cond...
- Dest = I.getSuccessor(1);
+ Dest = I.getSuccessor(1);
}
SwitchToNewBasicBlock(Dest, SF);
}
Dest = cast<BasicBlock>(I.getOperand(i+1));
break;
}
-
+
if (!Dest) Dest = I.getDefaultDest(); // No cases matched: use default
SwitchToNewBasicBlock(Dest, SF);
}
int i = PN->getBasicBlockIndex(PrevBB);
assert(i != -1 && "PHINode doesn't contain entry for predecessor??");
Value *IncomingValue = PN->getIncomingValue(i);
-
+
// Save the incoming value for this PHI node...
ResultValues.push_back(getOperandValue(IncomingValue, SF));
}
// Now loop over all of the PHI nodes setting their values...
SF.CurInst = SF.CurBB->begin();
- for (unsigned i = 0; PHINode *PN = dyn_cast<PHINode>(SF.CurInst);
- ++SF.CurInst, ++i)
+ for (unsigned i = 0; isa<PHINode>(SF.CurInst); ++SF.CurInst, ++i) {
+ PHINode *PN = cast<PHINode>(SF.CurInst);
SetValue(PN, ResultValues[i], SF);
+ }
}
//===----------------------------------------------------------------------===//
unsigned NumElements = getOperandValue(I.getOperand(0), SF).UIntVal;
// Allocate enough memory to hold the type...
- void *Memory = malloc(NumElements * TD.getTypeSize(Ty));
+ void *Memory = malloc(NumElements * (size_t)TD.getTypeSize(Ty));
GenericValue Result = PTOGV(Memory);
assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");
// getElementOffset - The workhorse for getelementptr.
//
GenericValue Interpreter::executeGEPOperation(Value *Ptr, gep_type_iterator I,
- gep_type_iterator E,
- ExecutionContext &SF) {
+ gep_type_iterator E,
+ ExecutionContext &SF) {
assert(isa<PointerType>(Ptr->getType()) &&
"Cannot getElementOffset of a nonpointer type!");
for (; I != E; ++I) {
if (const StructType *STy = dyn_cast<StructType>(*I)) {
const StructLayout *SLO = TD.getStructLayout(STy);
-
- const ConstantUInt *CPU = cast<ConstantUInt>(I.getOperand());
- unsigned Index = CPU->getValue();
-
- Total += SLO->MemberOffsets[Index];
+
+ const ConstantInt *CPU = cast<ConstantInt>(I.getOperand());
+ unsigned Index = unsigned(CPU->getZExtValue());
+
+ Total += (PointerTy)SLO->MemberOffsets[Index];
} else {
const SequentialType *ST = cast<SequentialType>(*I);
// Get the index number for the array... which must be long type...
GenericValue IdxGV = getOperandValue(I.getOperand(), SF);
uint64_t Idx;
- switch (I.getOperand()->getType()->getPrimitiveID()) {
+ switch (I.getOperand()->getType()->getTypeID()) {
default: assert(0 && "Illegal getelementptr index for sequential type!");
case Type::SByteTyID: Idx = IdxGV.SByteVal; break;
case Type::ShortTyID: Idx = IdxGV.ShortVal; break;
case Type::UIntTyID: Idx = IdxGV.UIntVal; break;
case Type::ULongTyID: Idx = IdxGV.ULongVal; break;
}
- Total += TD.getTypeSize(ST->getElementType())*Idx;
+ Total += PointerTy(TD.getTypeSize(ST->getElementType())*Idx);
}
}
void Interpreter::visitCallSite(CallSite CS) {
ExecutionContext &SF = ECStack.back();
+
+ // Check to see if this is an intrinsic function call...
+ if (Function *F = CS.getCalledFunction())
+ if (F->isExternal ())
+ switch (F->getIntrinsicID()) {
+ case Intrinsic::not_intrinsic:
+ break;
+ case Intrinsic::vastart: { // va_start
+ GenericValue ArgIndex;
+ ArgIndex.UIntPairVal.first = ECStack.size() - 1;
+ ArgIndex.UIntPairVal.second = 0;
+ SetValue(CS.getInstruction(), ArgIndex, SF);
+ return;
+ }
+ case Intrinsic::vaend: // va_end is a noop for the interpreter
+ return;
+ case Intrinsic::vacopy: // va_copy: dest = src
+ SetValue(CS.getInstruction(), getOperandValue(*CS.arg_begin(), SF), SF);
+ return;
+ default:
+ // If it is an unknown intrinsic function, use the intrinsic lowering
+ // class to transform it into hopefully tasty LLVM code.
+ //
+ Instruction *Prev = CS.getInstruction()->getPrev();
+ BasicBlock *Parent = CS.getInstruction()->getParent();
+ IL->LowerIntrinsicCall(cast<CallInst>(CS.getInstruction()));
+
+ // Restore the CurInst pointer to the first instruction newly inserted, if
+ // any.
+ if (!Prev) {
+ SF.CurInst = Parent->begin();
+ } else {
+ SF.CurInst = Prev;
+ ++SF.CurInst;
+ }
+ return;
+ }
+
SF.Caller = CS;
std::vector<GenericValue> ArgVals;
const unsigned NumArgs = SF.Caller.arg_size();
const Type *Ty = V->getType();
if (Ty->isIntegral() && Ty->getPrimitiveSize() < 4) {
if (Ty == Type::ShortTy)
- ArgVals.back().IntVal = ArgVals.back().ShortVal;
+ ArgVals.back().IntVal = ArgVals.back().ShortVal;
else if (Ty == Type::UShortTy)
- ArgVals.back().UIntVal = ArgVals.back().UShortVal;
+ ArgVals.back().UIntVal = ArgVals.back().UShortVal;
else if (Ty == Type::SByteTy)
- ArgVals.back().IntVal = ArgVals.back().SByteVal;
+ ArgVals.back().IntVal = ArgVals.back().SByteVal;
else if (Ty == Type::UByteTy)
- ArgVals.back().UIntVal = ArgVals.back().UByteVal;
+ ArgVals.back().UIntVal = ArgVals.back().UByteVal;
else if (Ty == Type::BoolTy)
- ArgVals.back().UIntVal = ArgVals.back().BoolVal;
+ ArgVals.back().UIntVal = ArgVals.back().BoolVal;
else
- assert(0 && "Unknown type!");
+ assert(0 && "Unknown type!");
}
}
- // To handle indirect calls, we must get the pointer value from the argument
+ // To handle indirect calls, we must get the pointer value from the argument
// and treat it as a function pointer.
- GenericValue SRC = getOperandValue(SF.Caller.getCalledValue(), SF);
+ GenericValue SRC = getOperandValue(SF.Caller.getCalledValue(), SF);
callFunction((Function*)GVTOP(SRC), ArgVals);
}
static GenericValue executeShlInst(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SHIFT(<<, UByte);
IMPLEMENT_SHIFT(<<, SByte);
IMPLEMENT_SHIFT(<<, UShort);
static GenericValue executeShrInst(GenericValue Src1, GenericValue Src2,
const Type *Ty) {
GenericValue Dest;
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_SHIFT(>>, UByte);
IMPLEMENT_SHIFT(>>, SByte);
IMPLEMENT_SHIFT(>>, UShort);
#define IMPLEMENT_CAST_CASE_START(DESTTY, DESTCTY) \
case Type::DESTTY##TyID: \
- switch (SrcTy->getPrimitiveID()) { \
+ switch (SrcTy->getTypeID()) { \
IMPLEMENT_CAST(DESTTY, DESTCTY, Bool); \
IMPLEMENT_CAST(DESTTY, DESTCTY, UByte); \
IMPLEMENT_CAST(DESTTY, DESTCTY, SByte); \
IMPLEMENT_CAST(DESTTY, DESTCTY, Double)
#define IMPLEMENT_CAST_CASE_END() \
- default: std::cout << "Unhandled cast: " << SrcTy << " to " << Ty << "\n"; \
+ default: std::cout << "Unhandled cast: " << *SrcTy << " to " << *Ty << "\n"; \
abort(); \
} \
break
IMPLEMENT_CAST_CASE_END()
GenericValue Interpreter::executeCastOperation(Value *SrcVal, const Type *Ty,
- ExecutionContext &SF) {
+ ExecutionContext &SF) {
const Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = getOperandValue(SrcVal, SF);
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_CAST_CASE(UByte , (unsigned char));
IMPLEMENT_CAST_CASE(SByte , ( signed char));
IMPLEMENT_CAST_CASE(UShort , (unsigned short));
SetValue(&I, executeCastOperation(I.getOperand(0), I.getType(), SF), SF);
}
-void Interpreter::visitVANextInst(VANextInst &I) {
- ExecutionContext &SF = ECStack.back();
-
- // Get the incoming valist parameter. LLI treats the valist as a pointer
- // to the next argument.
- GenericValue VAList = getOperandValue(I.getOperand(0), SF);
-
- // Move the pointer to the next vararg.
- GenericValue *ArgPtr = (GenericValue *) GVTOP (VAList);
- ++ArgPtr;
- VAList = PTOGV (ArgPtr);
- SetValue(&I, VAList, SF);
-}
-
#define IMPLEMENT_VAARG(TY) \
case Type::TY##TyID: Dest.TY##Val = Src.TY##Val; break
void Interpreter::visitVAArgInst(VAArgInst &I) {
ExecutionContext &SF = ECStack.back();
- // Get the incoming valist parameter. LLI treats the valist as a pointer
- // to the next argument.
+ // Get the incoming valist parameter. LLI treats the valist as a
+ // (ec-stack-depth var-arg-index) pair.
GenericValue VAList = getOperandValue(I.getOperand(0), SF);
- assert (GVTOP (VAList) != 0 && "VAList was null in vaarg instruction");
- GenericValue Dest, Src = *(GenericValue *) GVTOP (VAList);
+ GenericValue Dest;
+ GenericValue Src = ECStack[VAList.UIntPairVal.first]
+ .VarArgs[VAList.UIntPairVal.second];
const Type *Ty = I.getType();
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
IMPLEMENT_VAARG(UByte);
IMPLEMENT_VAARG(SByte);
IMPLEMENT_VAARG(UShort);
std::cout << "Unhandled dest type for vaarg instruction: " << *Ty << "\n";
abort();
}
-
+
// Set the Value of this Instruction.
SetValue(&I, Dest, SF);
+
+ // Move the pointer to the next vararg.
+ ++VAList.UIntPairVal.second;
}
//===----------------------------------------------------------------------===//
//
void Interpreter::callFunction(Function *F,
const std::vector<GenericValue> &ArgVals) {
- assert((ECStack.empty() || ECStack.back().Caller.getInstruction() == 0 ||
- ECStack.back().Caller.arg_size() == ArgVals.size()) &&
- "Incorrect number of arguments passed into function call!");
+ assert((ECStack.empty() || ECStack.back().Caller.getInstruction() == 0 ||
+ ECStack.back().Caller.arg_size() == ArgVals.size()) &&
+ "Incorrect number of arguments passed into function call!");
// Make a new stack frame... and fill it in.
ECStack.push_back(ExecutionContext());
ExecutionContext &StackFrame = ECStack.back();
StackFrame.CurInst = StackFrame.CurBB->begin();
// Run through the function arguments and initialize their values...
- assert((ArgVals.size() == F->asize() ||
- (ArgVals.size() > F->asize() && F->getFunctionType()->isVarArg())) &&
+ assert((ArgVals.size() == F->arg_size() ||
+ (ArgVals.size() > F->arg_size() && F->getFunctionType()->isVarArg()))&&
"Invalid number of values passed to function invocation!");
// Handle non-varargs arguments...
unsigned i = 0;
- for (Function::aiterator AI = F->abegin(), E = F->aend(); AI != E; ++AI, ++i)
+ for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end(); AI != E; ++AI, ++i)
SetValue(AI, ArgVals[i], StackFrame);
// Handle varargs arguments...
// Interpret a single instruction & increment the "PC".
ExecutionContext &SF = ECStack.back(); // Current stack frame
Instruction &I = *SF.CurInst++; // Increment before execute
-
+
// Track the number of dynamic instructions executed.
++NumDynamicInsts;