diff options
Diffstat (limited to 'lib/Core/Executor.cpp')
-rw-r--r-- | lib/Core/Executor.cpp | 184 |
1 files changed, 89 insertions, 95 deletions
diff --git a/lib/Core/Executor.cpp b/lib/Core/Executor.cpp index df8fdba8..f17b4062 100644 --- a/lib/Core/Executor.cpp +++ b/lib/Core/Executor.cpp @@ -968,39 +968,30 @@ ref<Expr> Executor::evalConstant(Constant *c) { } } -ref<Expr> Executor::eval(KInstruction *ki, - unsigned index, - ExecutionState &state) { +const Cell& Executor::eval(KInstruction *ki, unsigned index, + ExecutionState &state) const { assert(index < ki->inst->getNumOperands()); int vnumber = ki->operands[index]; // Determine if this is a constant or not. if (vnumber < 0) { unsigned index = -vnumber - 2; - Cell &c = kmodule->constantTable[index]; - return c.value; + return kmodule->constantTable[index]; } else { unsigned index = vnumber; StackFrame &sf = state.stack.back(); - Cell &c = sf.locals[index]; - return c.value; + return sf.locals[index]; } } void Executor::bindLocal(KInstruction *target, ExecutionState &state, ref<Expr> value) { - StackFrame &sf = state.stack.back(); - unsigned reg = target->dest; - Cell &c = sf.locals[reg]; - c.value = value; + getDestCell(state, target).value = value; } void Executor::bindArgument(KFunction *kf, unsigned index, ExecutionState &state, ref<Expr> value) { - StackFrame &sf = state.stack.back(); - unsigned reg = kf->getArgRegister(index); - Cell &c = sf.locals[reg]; - c.value = value; + getArgumentCell(state, kf, index).value = value; } ref<Expr> Executor::toUnique(const ExecutionState &state, @@ -1284,7 +1275,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { } if (!isVoidReturn) { - result = eval(ki, 0, state); + result = eval(ki, 0, state).value; } if (state.stack.size() <= 1) { @@ -1364,7 +1355,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { // FIXME: Find a way that we don't have this hidden dependency. assert(bi->getCondition() == bi->getOperand(0) && "Wrong operand index!"); - ref<Expr> cond = eval(ki, 0, state); + ref<Expr> cond = eval(ki, 0, state).value; Executor::StatePair branches = fork(state, cond, false); if (WriteTraces) { @@ -1397,7 +1388,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { } case Instruction::Switch: { SwitchInst *si = cast<SwitchInst>(i); - ref<Expr> cond = eval(ki, 0, state); + ref<Expr> cond = eval(ki, 0, state).value; unsigned cases = si->getNumCases(); BasicBlock *bb = si->getParent(); @@ -1481,7 +1472,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { arguments.reserve(numArgs); for (unsigned j=0; j<numArgs; ++j) - arguments.push_back(eval(ki, argStart+j, state)); + arguments.push_back(eval(ki, argStart+j, state).value); if (!f) { // special case the call with a bitcast case @@ -1530,7 +1521,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { if (f) { executeCall(state, ki, f, arguments); } else { - ref<Expr> v = eval(ki, 0, state); + ref<Expr> v = eval(ki, 0, state).value; ExecutionState *free = &state; bool hasInvalid = false, first = true; @@ -1571,7 +1562,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { break; } case Instruction::PHI: { - ref<Expr> result = eval(ki, state.incomingBBIndex * 2, state); + ref<Expr> result = eval(ki, state.incomingBBIndex * 2, state).value; bindLocal(ki, state, result); break; } @@ -1581,9 +1572,9 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { SelectInst *SI = cast<SelectInst>(ki->inst); assert(SI->getCondition() == SI->getOperand(0) && "Wrong operand index!"); - ref<Expr> cond = eval(ki, 0, state); - ref<Expr> tExpr = eval(ki, 1, state); - ref<Expr> fExpr = eval(ki, 2, state); + ref<Expr> cond = eval(ki, 0, state).value; + ref<Expr> tExpr = eval(ki, 1, state).value; + ref<Expr> fExpr = eval(ki, 2, state).value; ref<Expr> result = SelectExpr::create(cond, tExpr, fExpr); bindLocal(ki, state, result); break; @@ -1601,8 +1592,8 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { type), type)) case Instruction::Add: { BinaryOperator *bi = cast<BinaryOperator>(i); - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; if( bi->getType()->getTypeID() == llvm::Type::IntegerTyID ) { bindLocal(ki, state, AddExpr::create(left, right)); @@ -1616,8 +1607,8 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::Sub: { BinaryOperator *bi = cast<BinaryOperator>(i); - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; if( bi->getType()->getTypeID() == llvm::Type::IntegerTyID ) { bindLocal(ki, state, SubExpr::create(left, right)); @@ -1626,13 +1617,16 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { FP_CONSTANT_BINOP(floats::sub, type, left, right, ki, state); } +sfdrunk +airbedandbreakfast + break; } case Instruction::Mul: { BinaryOperator *bi = cast<BinaryOperator>(i); - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; if( bi->getType()->getTypeID() == llvm::Type::IntegerTyID ) { bindLocal(ki, state, MulExpr::create(left, right)); @@ -1645,80 +1639,80 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { } case Instruction::UDiv: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = UDivExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::SDiv: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = SDivExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::URem: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = URemExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::SRem: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = SRemExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::And: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = AndExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::Or: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = OrExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::Xor: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = XorExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::Shl: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = ShlExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::LShr: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = LShrExpr::create(left, right); bindLocal(ki, state, result); break; } case Instruction::AShr: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = AShrExpr::create(left, right); bindLocal(ki, state, result); break; @@ -1732,80 +1726,80 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { switch(ii->getPredicate()) { case ICmpInst::ICMP_EQ: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = EqExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_NE: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = NeExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_UGT: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = UgtExpr::create(left, right); bindLocal(ki, state,result); break; } case ICmpInst::ICMP_UGE: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = UgeExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_ULT: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = UltExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_ULE: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = UleExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_SGT: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = SgtExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_SGE: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = SgeExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_SLT: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = SltExpr::create(left, right); bindLocal(ki, state, result); break; } case ICmpInst::ICMP_SLE: { - ref<Expr> left = eval(ki, 0, state); - ref<Expr> right = eval(ki, 1, state); + ref<Expr> left = eval(ki, 0, state).value; + ref<Expr> right = eval(ki, 1, state).value; ref<Expr> result = SleExpr::create(left, right); bindLocal(ki, state, result); break; @@ -1826,7 +1820,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { ref<Expr> size = Expr::createPointer(elementSize); if (ai->isArrayAllocation()) { // XXX coerce? - ref<Expr> count = eval(ki, 0, state); + ref<Expr> count = eval(ki, 0, state).value; size = MulExpr::create(count, size); } bool isLocal = i->getOpcode()==Instruction::Alloca; @@ -1834,31 +1828,31 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { break; } case Instruction::Free: { - executeFree(state, eval(ki, 0, state)); + executeFree(state, eval(ki, 0, state).value); break; } case Instruction::Load: { - ref<Expr> base = eval(ki, 0, state); + ref<Expr> base = eval(ki, 0, state).value; executeMemoryOperation(state, false, base, 0, ki); break; } case Instruction::Store: { - ref<Expr> base = eval(ki, 1, state); - ref<Expr> value = eval(ki, 0, state); + ref<Expr> base = eval(ki, 1, state).value; + ref<Expr> value = eval(ki, 0, state).value; executeMemoryOperation(state, true, base, value, 0); break; } case Instruction::GetElementPtr: { KGEPInstruction *kgepi = static_cast<KGEPInstruction*>(ki); - ref<Expr> base = eval(ki, 0, state); + ref<Expr> base = eval(ki, 0, state).value; for (std::vector< std::pair<unsigned, unsigned> >::iterator it = kgepi->indices.begin(), ie = kgepi->indices.end(); it != ie; ++it) { unsigned elementSize = it->second; - ref<Expr> index = eval(ki, it->first, state); + ref<Expr> index = eval(ki, it->first, state).value; base = AddExpr::create(base, MulExpr::create(Expr::createCoerceToPointerType(index), Expr::createPointer(elementSize))); @@ -1873,7 +1867,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { // Conversion case Instruction::Trunc: { CastInst *ci = cast<CastInst>(i); - ref<Expr> result = ExtractExpr::createByteOff(eval(ki, 0, state), + ref<Expr> result = ExtractExpr::createByteOff(eval(ki, 0, state).value, 0, Expr::getWidthForLLVMType(ci->getType())); bindLocal(ki, state, result); @@ -1881,14 +1875,14 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { } case Instruction::ZExt: { CastInst *ci = cast<CastInst>(i); - ref<Expr> result = ZExtExpr::create(eval(ki, 0, state), + ref<Expr> result = ZExtExpr::create(eval(ki, 0, state).value, Expr::getWidthForLLVMType(ci->getType())); bindLocal(ki, state, result); break; } case Instruction::SExt: { CastInst *ci = cast<CastInst>(i); - ref<Expr> result = SExtExpr::create(eval(ki, 0, state), + ref<Expr> result = SExtExpr::create(eval(ki, 0, state).value, Expr::getWidthForLLVMType(ci->getType())); bindLocal(ki, state, result); break; @@ -1897,20 +1891,20 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::IntToPtr: { CastInst *ci = cast<CastInst>(i); Expr::Width pType = Expr::getWidthForLLVMType(ci->getType()); - ref<Expr> arg = eval(ki, 0, state); + ref<Expr> arg = eval(ki, 0, state).value; bindLocal(ki, state, ZExtExpr::create(arg, pType)); break; } case Instruction::PtrToInt: { CastInst *ci = cast<CastInst>(i); Expr::Width iType = Expr::getWidthForLLVMType(ci->getType()); - ref<Expr> arg = eval(ki, 0, state); + ref<Expr> arg = eval(ki, 0, state).value; bindLocal(ki, state, ZExtExpr::create(arg, iType)); break; } case Instruction::BitCast: { - ref<Expr> result = eval(ki, 0, state); + ref<Expr> result = eval(ki, 0, state).value; bindLocal(ki, state, result); break; } @@ -1919,7 +1913,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FPTrunc: { FPTruncInst *fi = cast<FPTruncInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> arg = toConstant(state, eval(ki, 0, state), + ref<Expr> arg = toConstant(state, eval(ki, 0, state).value, "floating point"); uint64_t value = floats::trunc(arg.getConstantValue(), resultType, @@ -1932,7 +1926,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FPExt: { FPExtInst *fi = cast<FPExtInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> arg = toConstant(state, eval(ki, 0, state), + ref<Expr> arg = toConstant(state, eval(ki, 0, state).value, "floating point"); uint64_t value = floats::ext(arg.getConstantValue(), resultType, @@ -1945,7 +1939,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FPToUI: { FPToUIInst *fi = cast<FPToUIInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> arg = toConstant(state, eval(ki, 0, state), + ref<Expr> arg = toConstant(state, eval(ki, 0, state).value, "floating point"); uint64_t value = floats::toUnsignedInt(arg.getConstantValue(), resultType, @@ -1958,7 +1952,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FPToSI: { FPToSIInst *fi = cast<FPToSIInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> arg = toConstant(state, eval(ki, 0, state), + ref<Expr> arg = toConstant(state, eval(ki, 0, state).value, "floating point"); uint64_t value = floats::toSignedInt(arg.getConstantValue(), resultType, @@ -1971,7 +1965,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::UIToFP: { UIToFPInst *fi = cast<UIToFPInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> arg = toConstant(state, eval(ki, 0, state), + ref<Expr> arg = toConstant(state, eval(ki, 0, state).value, "floating point"); uint64_t value = floats::UnsignedIntToFP(arg.getConstantValue(), resultType); @@ -1983,7 +1977,7 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::SIToFP: { SIToFPInst *fi = cast<SIToFPInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> arg = toConstant(state, eval(ki, 0, state), + ref<Expr> arg = toConstant(state, eval(ki, 0, state).value, "floating point"); uint64_t value = floats::SignedIntToFP(arg.getConstantValue(), resultType, @@ -1996,9 +1990,9 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FCmp: { FCmpInst *fi = cast<FCmpInst>(i); Expr::Width resultType = Expr::getWidthForLLVMType(fi->getType()); - ref<Expr> left = toConstant(state, eval(ki, 0, state), + ref<Expr> left = toConstant(state, eval(ki, 0, state).value, "floating point"); - ref<Expr> right = toConstant(state, eval(ki, 1, state), + ref<Expr> right = toConstant(state, eval(ki, 1, state).value, "floating point"); uint64_t leftVal = left.getConstantValue(); uint64_t rightVal = right.getConstantValue(); @@ -2105,8 +2099,8 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FDiv: { BinaryOperator *bi = cast<BinaryOperator>(i); - ref<Expr> dividend = eval(ki, 0, state); - ref<Expr> divisor = eval(ki, 1, state); + ref<Expr> dividend = eval(ki, 0, state).value; + ref<Expr> divisor = eval(ki, 1, state).value; Expr::Width type = Expr::getWidthForLLVMType(bi->getType()); FP_CONSTANT_BINOP(floats::div, type, dividend, divisor, ki, state); break; @@ -2115,8 +2109,8 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) { case Instruction::FRem: { BinaryOperator *bi = cast<BinaryOperator>(i); - ref<Expr> dividend = eval(ki, 0, state); - ref<Expr> divisor = eval(ki, 1, state); + ref<Expr> dividend = eval(ki, 0, state).value; + ref<Expr> divisor = eval(ki, 1, state).value; Expr::Width type = Expr::getWidthForLLVMType(bi->getType()); FP_CONSTANT_BINOP(floats::mod, type, dividend, divisor, ki, state); break; |