#include "llvm/Support/MutexGuard.h"
#include "llvm/System/DynamicLibrary.h"
#include "llvm/Target/TargetData.h"
-#include <iostream>
+#include <math.h>
using namespace llvm;
-namespace {
- Statistic<> NumInitBytes("lli", "Number of bytes of global vars initialized");
- Statistic<> NumGlobals ("lli", "Number of global vars initialized");
-}
+STATISTIC(NumInitBytes, "Number of bytes of global vars initialized");
+STATISTIC(NumGlobals , "Number of global vars initialized");
ExecutionEngine::EECtorFn ExecutionEngine::JITCtor = 0;
ExecutionEngine::EECtorFn ExecutionEngine::InterpCtor = 0;
-ExecutionEngine::ExecutionEngine(ModuleProvider *P) :
- CurMod(*P->getModule()), MP(P) {
+ExecutionEngine::ExecutionEngine(ModuleProvider *P) {
+ LazyCompilationDisabled = false;
+ Modules.push_back(P);
assert(P && "ModuleProvider is null?");
}
-ExecutionEngine::ExecutionEngine(Module *M) : CurMod(*M), MP(0) {
+ExecutionEngine::ExecutionEngine(Module *M) {
+ LazyCompilationDisabled = false;
assert(M && "Module is null?");
+ Modules.push_back(new ExistingModuleProvider(M));
}
ExecutionEngine::~ExecutionEngine() {
- delete MP;
+ clearAllGlobalMappings();
+ for (unsigned i = 0, e = Modules.size(); i != e; ++i)
+ delete Modules[i];
+}
+
+/// FindFunctionNamed - Search all of the active modules to find the one that
+/// defines FnName. This is very slow operation and shouldn't be used for
+/// general code.
+Function *ExecutionEngine::FindFunctionNamed(const char *FnName) {
+ for (unsigned i = 0, e = Modules.size(); i != e; ++i) {
+ if (Function *F = Modules[i]->getModule()->getFunction(FnName))
+ return F;
+ }
+ return 0;
}
+
/// addGlobalMapping - Tell the execution engine that the specified global is
/// at the specified location. This is used internally as functions are JIT'd
/// and as global variables are laid out in memory. It can and should also be
unsigned PtrSize = EE->getTargetData()->getPointerSize();
char *Result = new char[(InputArgv.size()+1)*PtrSize];
- DEBUG(std::cerr << "ARGV = " << (void*)Result << "\n");
- const Type *SBytePtr = PointerType::get(Type::SByteTy);
+ DOUT << "ARGV = " << (void*)Result << "\n";
+ const Type *SBytePtr = PointerType::get(Type::Int8Ty);
for (unsigned i = 0; i != InputArgv.size(); ++i) {
unsigned Size = InputArgv[i].size()+1;
char *Dest = new char[Size];
- DEBUG(std::cerr << "ARGV[" << i << "] = " << (void*)Dest << "\n");
+ DOUT << "ARGV[" << i << "] = " << (void*)Dest << "\n";
std::copy(InputArgv[i].begin(), InputArgv[i].end(), Dest);
Dest[Size-1] = 0;
/// runStaticConstructorsDestructors - This method is used to execute all of
-/// the static constructors or destructors for a module, depending on the
+/// the static constructors or destructors for a program, depending on the
/// value of isDtors.
void ExecutionEngine::runStaticConstructorsDestructors(bool isDtors) {
const char *Name = isDtors ? "llvm.global_dtors" : "llvm.global_ctors";
- GlobalVariable *GV = CurMod.getNamedGlobal(Name);
-
- // If this global has internal linkage, or if it has a use, then it must be
- // an old-style (llvmgcc3) static ctor with __main linked in and in use. If
- // this is the case, don't execute any of the global ctors, __main will do it.
- if (!GV || GV->isExternal() || GV->hasInternalLinkage()) return;
- // Should be an array of '{ int, void ()* }' structs. The first value is the
- // init priority, which we ignore.
- ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
- if (!InitList) return;
- for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
- if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
- if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
+ // Execute global ctors/dtors for each module in the program.
+ for (unsigned m = 0, e = Modules.size(); m != e; ++m) {
+ GlobalVariable *GV = Modules[m]->getModule()->getNamedGlobal(Name);
+
+ // If this global has internal linkage, or if it has a use, then it must be
+ // an old-style (llvmgcc3) static ctor with __main linked in and in use. If
+ // this is the case, don't execute any of the global ctors, __main will do
+ // it.
+ if (!GV || GV->isDeclaration() || GV->hasInternalLinkage()) continue;
+
+ // Should be an array of '{ int, void ()* }' structs. The first value is
+ // the init priority, which we ignore.
+ ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
+ if (!InitList) continue;
+ for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
+ if (ConstantStruct *CS =
+ dyn_cast<ConstantStruct>(InitList->getOperand(i))) {
+ if (CS->getNumOperands() != 2) break; // Not array of 2-element structs.
- Constant *FP = CS->getOperand(1);
- if (FP->isNullValue())
- return; // Found a null terminator, exit.
+ Constant *FP = CS->getOperand(1);
+ if (FP->isNullValue())
+ break; // Found a null terminator, exit.
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
- if (CE->getOpcode() == Instruction::Cast)
- FP = CE->getOperand(0);
- if (Function *F = dyn_cast<Function>(FP)) {
- // Execute the ctor/dtor function!
- runFunction(F, std::vector<GenericValue>());
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
+ if (CE->isCast())
+ FP = CE->getOperand(0);
+ if (Function *F = dyn_cast<Function>(FP)) {
+ // Execute the ctor/dtor function!
+ runFunction(F, std::vector<GenericValue>());
+ }
}
- }
+ }
}
/// runFunctionAsMain - This is a helper function which wraps runFunction to
const char * const * envp) {
std::vector<GenericValue> GVArgs;
GenericValue GVArgc;
- GVArgc.IntVal = argv.size();
+ GVArgc.IntVal = APInt(32, argv.size());
+
+ // Check main() type
unsigned NumArgs = Fn->getFunctionType()->getNumParams();
+ const FunctionType *FTy = Fn->getFunctionType();
+ const Type* PPInt8Ty = PointerType::get(PointerType::get(Type::Int8Ty));
+ switch (NumArgs) {
+ case 3:
+ if (FTy->getParamType(2) != PPInt8Ty) {
+ cerr << "Invalid type for third argument of main() supplied\n";
+ abort();
+ }
+ // FALLS THROUGH
+ case 2:
+ if (FTy->getParamType(1) != PPInt8Ty) {
+ cerr << "Invalid type for second argument of main() supplied\n";
+ abort();
+ }
+ // FALLS THROUGH
+ case 1:
+ if (FTy->getParamType(0) != Type::Int32Ty) {
+ cerr << "Invalid type for first argument of main() supplied\n";
+ abort();
+ }
+ // FALLS THROUGH
+ case 0:
+ if (FTy->getReturnType() != Type::Int32Ty &&
+ FTy->getReturnType() != Type::VoidTy) {
+ cerr << "Invalid return type of main() supplied\n";
+ abort();
+ }
+ break;
+ default:
+ cerr << "Invalid number of arguments of main() supplied\n";
+ abort();
+ }
+
if (NumArgs) {
GVArgs.push_back(GVArgc); // Arg #0 = argc.
if (NumArgs > 1) {
}
}
}
- return runFunction(Fn, GVArgs).IntVal;
+ return runFunction(Fn, GVArgs).IntVal.getZExtValue();
}
/// If possible, create a JIT, unless the caller specifically requests an
/// NULL is returned.
///
ExecutionEngine *ExecutionEngine::create(ModuleProvider *MP,
- bool ForceInterpreter) {
+ bool ForceInterpreter,
+ std::string *ErrorStr) {
ExecutionEngine *EE = 0;
// Unless the interpreter was explicitly selected, try making a JIT.
if (!ForceInterpreter && JITCtor)
- EE = JITCtor(MP);
+ EE = JITCtor(MP, ErrorStr);
// If we can't make a JIT, make an interpreter instead.
if (EE == 0 && InterpCtor)
- EE = InterpCtor(MP);
+ EE = InterpCtor(MP, ErrorStr);
if (EE) {
// Make sure we can resolve symbols in the program as well. The zero arg
const_cast<GlobalVariable *>(dyn_cast<GlobalVariable>(GV)))
EmitGlobalVariable(GVar);
else
- assert("Global hasn't had an address allocated yet!");
+ assert(0 && "Global hasn't had an address allocated yet!");
return state.getGlobalAddressMap(locked)[GV];
}
-/// FIXME: document
-///
+/// This function converts a Constant* into a GenericValue. The interesting
+/// part is if C is a ConstantExpr.
+/// @brief Get a GenericValue for a Constant*
GenericValue ExecutionEngine::getConstantValue(const Constant *C) {
- GenericValue Result;
- if (isa<UndefValue>(C)) return Result;
+ // If its undefined, return the garbage.
+ if (isa<UndefValue>(C))
+ return GenericValue();
- if (ConstantExpr *CE = const_cast<ConstantExpr*>(dyn_cast<ConstantExpr>(C))) {
+ // If the value is a ConstantExpr
+ if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
+ Constant *Op0 = CE->getOperand(0);
switch (CE->getOpcode()) {
case Instruction::GetElementPtr: {
- Result = getConstantValue(CE->getOperand(0));
- std::vector<Value*> Indexes(CE->op_begin()+1, CE->op_end());
+ // Compute the index
+ GenericValue Result = getConstantValue(Op0);
+ SmallVector<Value*, 8> Indices(CE->op_begin()+1, CE->op_end());
uint64_t Offset =
- TD->getIndexedOffset(CE->getOperand(0)->getType(), Indexes);
+ TD->getIndexedOffset(Op0->getType(), &Indices[0], Indices.size());
- if (getTargetData()->getPointerSize() == 4)
- Result.IntVal += Offset;
- else
- Result.LongVal += Offset;
+ char* tmp = (char*) Result.PointerVal;
+ Result = PTOGV(tmp + Offset);
return Result;
}
- case Instruction::Cast: {
- // We only need to handle a few cases here. Almost all casts will
- // automatically fold, just the ones involving pointers won't.
- //
- Constant *Op = CE->getOperand(0);
- GenericValue GV = getConstantValue(Op);
-
- // Handle cast of pointer to pointer...
- if (Op->getType()->getTypeID() == C->getType()->getTypeID())
- return GV;
-
- // Handle a cast of pointer to any integral type...
- if (isa<PointerType>(Op->getType()) && C->getType()->isIntegral())
- return GV;
-
- // Handle cast of integer to a pointer...
- if (isa<PointerType>(C->getType()) && Op->getType()->isIntegral())
- switch (Op->getType()->getTypeID()) {
- case Type::BoolTyID: return PTOGV((void*)(uintptr_t)GV.BoolVal);
- case Type::SByteTyID: return PTOGV((void*)( intptr_t)GV.SByteVal);
- case Type::UByteTyID: return PTOGV((void*)(uintptr_t)GV.UByteVal);
- case Type::ShortTyID: return PTOGV((void*)( intptr_t)GV.ShortVal);
- case Type::UShortTyID: return PTOGV((void*)(uintptr_t)GV.UShortVal);
- case Type::IntTyID: return PTOGV((void*)( intptr_t)GV.IntVal);
- case Type::UIntTyID: return PTOGV((void*)(uintptr_t)GV.UIntVal);
- case Type::LongTyID: return PTOGV((void*)( intptr_t)GV.LongVal);
- case Type::ULongTyID: return PTOGV((void*)(uintptr_t)GV.ULongVal);
- default: assert(0 && "Unknown integral type!");
- }
- break;
+ case Instruction::Trunc: {
+ GenericValue GV = getConstantValue(Op0);
+ uint32_t BitWidth = cast<IntegerType>(CE->getType())->getBitWidth();
+ GV.IntVal = GV.IntVal.trunc(BitWidth);
+ return GV;
+ }
+ case Instruction::ZExt: {
+ GenericValue GV = getConstantValue(Op0);
+ uint32_t BitWidth = cast<IntegerType>(CE->getType())->getBitWidth();
+ GV.IntVal = GV.IntVal.zext(BitWidth);
+ return GV;
+ }
+ case Instruction::SExt: {
+ GenericValue GV = getConstantValue(Op0);
+ uint32_t BitWidth = cast<IntegerType>(CE->getType())->getBitWidth();
+ GV.IntVal = GV.IntVal.sext(BitWidth);
+ return GV;
+ }
+ case Instruction::FPTrunc: {
+ // FIXME long double
+ GenericValue GV = getConstantValue(Op0);
+ GV.FloatVal = float(GV.DoubleVal);
+ return GV;
+ }
+ case Instruction::FPExt:{
+ // FIXME long double
+ GenericValue GV = getConstantValue(Op0);
+ GV.DoubleVal = double(GV.FloatVal);
+ return GV;
+ }
+ case Instruction::UIToFP: {
+ GenericValue GV = getConstantValue(Op0);
+ if (CE->getType() == Type::FloatTy)
+ GV.FloatVal = float(GV.IntVal.roundToDouble());
+ else if (CE->getType() == Type::DoubleTy)
+ GV.DoubleVal = GV.IntVal.roundToDouble();
+ else if (CE->getType() == Type::X86_FP80Ty) {
+ const uint64_t zero[] = {0, 0};
+ APFloat apf = APFloat(APInt(80, 2, zero));
+ (void)apf.convertFromInteger(GV.IntVal.getRawData(), 2, false,
+ APFloat::rmTowardZero);
+ GV.IntVal = apf.convertToAPInt();
+ }
+ return GV;
+ }
+ case Instruction::SIToFP: {
+ GenericValue GV = getConstantValue(Op0);
+ if (CE->getType() == Type::FloatTy)
+ GV.FloatVal = float(GV.IntVal.signedRoundToDouble());
+ else if (CE->getType() == Type::DoubleTy)
+ GV.DoubleVal = GV.IntVal.signedRoundToDouble();
+ else if (CE->getType() == Type::X86_FP80Ty) {
+ const uint64_t zero[] = { 0, 0};
+ APFloat apf = APFloat(APInt(80, 2, zero));
+ (void)apf.convertFromInteger(GV.IntVal.getRawData(), 2, true,
+ APFloat::rmTowardZero);
+ GV.IntVal = apf.convertToAPInt();
+ }
+ return GV;
+ }
+ case Instruction::FPToUI: // double->APInt conversion handles sign
+ case Instruction::FPToSI: {
+ GenericValue GV = getConstantValue(Op0);
+ uint32_t BitWidth = cast<IntegerType>(CE->getType())->getBitWidth();
+ if (Op0->getType() == Type::FloatTy)
+ GV.IntVal = APIntOps::RoundFloatToAPInt(GV.FloatVal, BitWidth);
+ else if (Op0->getType() == Type::DoubleTy)
+ GV.IntVal = APIntOps::RoundDoubleToAPInt(GV.DoubleVal, BitWidth);
+ else if (Op0->getType() == Type::X86_FP80Ty) {
+ APFloat apf = APFloat(GV.IntVal);
+ uint64_t v;
+ (void)apf.convertToInteger(&v, BitWidth,
+ CE->getOpcode()==Instruction::FPToSI,
+ APFloat::rmTowardZero);
+ GV.IntVal = v; // endian?
+ }
+ return GV;
+ }
+ case Instruction::PtrToInt: {
+ GenericValue GV = getConstantValue(Op0);
+ uint32_t PtrWidth = TD->getPointerSizeInBits();
+ GV.IntVal = APInt(PtrWidth, uintptr_t(GV.PointerVal));
+ return GV;
+ }
+ case Instruction::IntToPtr: {
+ GenericValue GV = getConstantValue(Op0);
+ uint32_t PtrWidth = TD->getPointerSizeInBits();
+ if (PtrWidth != GV.IntVal.getBitWidth())
+ GV.IntVal = GV.IntVal.zextOrTrunc(PtrWidth);
+ assert(GV.IntVal.getBitWidth() <= 64 && "Bad pointer width");
+ GV.PointerVal = PointerTy(uintptr_t(GV.IntVal.getZExtValue()));
+ return GV;
+ }
+ case Instruction::BitCast: {
+ GenericValue GV = getConstantValue(Op0);
+ const Type* DestTy = CE->getType();
+ switch (Op0->getType()->getTypeID()) {
+ default: assert(0 && "Invalid bitcast operand");
+ case Type::IntegerTyID:
+ assert(DestTy->isFloatingPoint() && "invalid bitcast");
+ if (DestTy == Type::FloatTy)
+ GV.FloatVal = GV.IntVal.bitsToFloat();
+ else if (DestTy == Type::DoubleTy)
+ GV.DoubleVal = GV.IntVal.bitsToDouble();
+ break;
+ case Type::FloatTyID:
+ assert(DestTy == Type::Int32Ty && "Invalid bitcast");
+ GV.IntVal.floatToBits(GV.FloatVal);
+ break;
+ case Type::DoubleTyID:
+ assert(DestTy == Type::Int64Ty && "Invalid bitcast");
+ GV.IntVal.doubleToBits(GV.DoubleVal);
+ break;
+ case Type::PointerTyID:
+ assert(isa<PointerType>(DestTy) && "Invalid bitcast");
+ break; // getConstantValue(Op0) above already converted it
+ }
+ return GV;
}
-
case Instruction::Add:
+ case Instruction::Sub:
+ case Instruction::Mul:
+ case Instruction::UDiv:
+ case Instruction::SDiv:
+ case Instruction::URem:
+ case Instruction::SRem:
+ case Instruction::And:
+ case Instruction::Or:
+ case Instruction::Xor: {
+ GenericValue LHS = getConstantValue(Op0);
+ GenericValue RHS = getConstantValue(CE->getOperand(1));
+ GenericValue GV;
switch (CE->getOperand(0)->getType()->getTypeID()) {
default: assert(0 && "Bad add type!"); abort();
- case Type::LongTyID:
- case Type::ULongTyID:
- Result.LongVal = getConstantValue(CE->getOperand(0)).LongVal +
- getConstantValue(CE->getOperand(1)).LongVal;
- break;
- case Type::IntTyID:
- case Type::UIntTyID:
- Result.IntVal = getConstantValue(CE->getOperand(0)).IntVal +
- getConstantValue(CE->getOperand(1)).IntVal;
- break;
- case Type::ShortTyID:
- case Type::UShortTyID:
- Result.ShortVal = getConstantValue(CE->getOperand(0)).ShortVal +
- getConstantValue(CE->getOperand(1)).ShortVal;
- break;
- case Type::SByteTyID:
- case Type::UByteTyID:
- Result.SByteVal = getConstantValue(CE->getOperand(0)).SByteVal +
- getConstantValue(CE->getOperand(1)).SByteVal;
+ case Type::IntegerTyID:
+ switch (CE->getOpcode()) {
+ default: assert(0 && "Invalid integer opcode");
+ case Instruction::Add: GV.IntVal = LHS.IntVal + RHS.IntVal; break;
+ case Instruction::Sub: GV.IntVal = LHS.IntVal - RHS.IntVal; break;
+ case Instruction::Mul: GV.IntVal = LHS.IntVal * RHS.IntVal; break;
+ case Instruction::UDiv:GV.IntVal = LHS.IntVal.udiv(RHS.IntVal); break;
+ case Instruction::SDiv:GV.IntVal = LHS.IntVal.sdiv(RHS.IntVal); break;
+ case Instruction::URem:GV.IntVal = LHS.IntVal.urem(RHS.IntVal); break;
+ case Instruction::SRem:GV.IntVal = LHS.IntVal.srem(RHS.IntVal); break;
+ case Instruction::And: GV.IntVal = LHS.IntVal & RHS.IntVal; break;
+ case Instruction::Or: GV.IntVal = LHS.IntVal | RHS.IntVal; break;
+ case Instruction::Xor: GV.IntVal = LHS.IntVal ^ RHS.IntVal; break;
+ }
break;
case Type::FloatTyID:
- Result.FloatVal = getConstantValue(CE->getOperand(0)).FloatVal +
- getConstantValue(CE->getOperand(1)).FloatVal;
+ switch (CE->getOpcode()) {
+ default: assert(0 && "Invalid float opcode"); abort();
+ case Instruction::Add:
+ GV.FloatVal = LHS.FloatVal + RHS.FloatVal; break;
+ case Instruction::Sub:
+ GV.FloatVal = LHS.FloatVal - RHS.FloatVal; break;
+ case Instruction::Mul:
+ GV.FloatVal = LHS.FloatVal * RHS.FloatVal; break;
+ case Instruction::FDiv:
+ GV.FloatVal = LHS.FloatVal / RHS.FloatVal; break;
+ case Instruction::FRem:
+ GV.FloatVal = ::fmodf(LHS.FloatVal,RHS.FloatVal); break;
+ }
break;
case Type::DoubleTyID:
- Result.DoubleVal = getConstantValue(CE->getOperand(0)).DoubleVal +
- getConstantValue(CE->getOperand(1)).DoubleVal;
+ switch (CE->getOpcode()) {
+ default: assert(0 && "Invalid double opcode"); abort();
+ case Instruction::Add:
+ GV.DoubleVal = LHS.DoubleVal + RHS.DoubleVal; break;
+ case Instruction::Sub:
+ GV.DoubleVal = LHS.DoubleVal - RHS.DoubleVal; break;
+ case Instruction::Mul:
+ GV.DoubleVal = LHS.DoubleVal * RHS.DoubleVal; break;
+ case Instruction::FDiv:
+ GV.DoubleVal = LHS.DoubleVal / RHS.DoubleVal; break;
+ case Instruction::FRem:
+ GV.DoubleVal = ::fmod(LHS.DoubleVal,RHS.DoubleVal); break;
+ }
+ break;
+ case Type::X86_FP80TyID:
+ case Type::PPC_FP128TyID:
+ case Type::FP128TyID: {
+ APFloat apfLHS = APFloat(LHS.IntVal);
+ switch (CE->getOpcode()) {
+ default: assert(0 && "Invalid long double opcode"); abort();
+ case Instruction::Add:
+ apfLHS.add(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
+ GV.IntVal = apfLHS.convertToAPInt();
+ break;
+ case Instruction::Sub:
+ apfLHS.subtract(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
+ GV.IntVal = apfLHS.convertToAPInt();
+ break;
+ case Instruction::Mul:
+ apfLHS.multiply(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
+ GV.IntVal = apfLHS.convertToAPInt();
+ break;
+ case Instruction::FDiv:
+ apfLHS.divide(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
+ GV.IntVal = apfLHS.convertToAPInt();
+ break;
+ case Instruction::FRem:
+ apfLHS.mod(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
+ GV.IntVal = apfLHS.convertToAPInt();
+ break;
+ }
+ }
break;
}
- return Result;
+ return GV;
+ }
default:
break;
}
- std::cerr << "ConstantExpr not handled as global var init: " << *CE << "\n";
+ cerr << "ConstantExpr not handled: " << *CE << "\n";
abort();
}
+ GenericValue Result;
switch (C->getType()->getTypeID()) {
-#define GET_CONST_VAL(TY, CTY, CLASS) \
- case Type::TY##TyID: Result.TY##Val = (CTY)cast<CLASS>(C)->getValue(); break
- GET_CONST_VAL(Bool , bool , ConstantBool);
- GET_CONST_VAL(UByte , unsigned char , ConstantUInt);
- GET_CONST_VAL(SByte , signed char , ConstantSInt);
- GET_CONST_VAL(UShort , unsigned short, ConstantUInt);
- GET_CONST_VAL(Short , signed short , ConstantSInt);
- GET_CONST_VAL(UInt , unsigned int , ConstantUInt);
- GET_CONST_VAL(Int , signed int , ConstantSInt);
- GET_CONST_VAL(ULong , uint64_t , ConstantUInt);
- GET_CONST_VAL(Long , int64_t , ConstantSInt);
- GET_CONST_VAL(Float , float , ConstantFP);
- GET_CONST_VAL(Double , double , ConstantFP);
-#undef GET_CONST_VAL
+ case Type::FloatTyID:
+ Result.FloatVal = cast<ConstantFP>(C)->getValueAPF().convertToFloat();
+ break;
+ case Type::DoubleTyID:
+ Result.DoubleVal = cast<ConstantFP>(C)->getValueAPF().convertToDouble();
+ break;
+ case Type::X86_FP80TyID:
+ case Type::FP128TyID:
+ case Type::PPC_FP128TyID:
+ Result.IntVal = cast <ConstantFP>(C)->getValueAPF().convertToAPInt();
+ break;
+ case Type::IntegerTyID:
+ Result.IntVal = cast<ConstantInt>(C)->getValue();
+ break;
case Type::PointerTyID:
if (isa<ConstantPointerNull>(C))
Result.PointerVal = 0;
assert(0 && "Unknown constant pointer type!");
break;
default:
- std::cout << "ERROR: Constant unimp for type: " << *C->getType() << "\n";
+ cerr << "ERROR: Constant unimplemented for type: " << *C->getType() << "\n";
abort();
}
return Result;
/// It is not a pointer to a GenericValue containing the address at which to
/// store Val.
///
-void ExecutionEngine::StoreValueToMemory(GenericValue Val, GenericValue *Ptr,
+void ExecutionEngine::StoreValueToMemory(const GenericValue &Val, GenericValue *Ptr,
const Type *Ty) {
- if (getTargetData()->isLittleEndian()) {
- switch (Ty->getTypeID()) {
- 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;
- Store4BytesLittleEndian:
- 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::PointerTyID: if (getTargetData()->getPointerSize() == 4)
- goto Store4BytesLittleEndian;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID:
- Ptr->Untyped[0] = (unsigned char)(Val.ULongVal );
- Ptr->Untyped[1] = (unsigned char)(Val.ULongVal >> 8);
- Ptr->Untyped[2] = (unsigned char)(Val.ULongVal >> 16);
- Ptr->Untyped[3] = (unsigned char)(Val.ULongVal >> 24);
- Ptr->Untyped[4] = (unsigned char)(Val.ULongVal >> 32);
- Ptr->Untyped[5] = (unsigned char)(Val.ULongVal >> 40);
- Ptr->Untyped[6] = (unsigned char)(Val.ULongVal >> 48);
- Ptr->Untyped[7] = (unsigned char)(Val.ULongVal >> 56);
- break;
- default:
- std::cout << "Cannot store value of type " << *Ty << "!\n";
+ switch (Ty->getTypeID()) {
+ case Type::IntegerTyID: {
+ unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
+ GenericValue TmpVal = Val;
+ if (BitWidth <= 8)
+ *((uint8_t*)Ptr) = uint8_t(Val.IntVal.getZExtValue());
+ else if (BitWidth <= 16) {
+ *((uint16_t*)Ptr) = uint16_t(Val.IntVal.getZExtValue());
+ } else if (BitWidth <= 32) {
+ *((uint32_t*)Ptr) = uint32_t(Val.IntVal.getZExtValue());
+ } else if (BitWidth <= 64) {
+ *((uint64_t*)Ptr) = uint64_t(Val.IntVal.getZExtValue());
+ } else {
+ uint64_t *Dest = (uint64_t*)Ptr;
+ const uint64_t *Src = Val.IntVal.getRawData();
+ for (uint32_t i = 0; i < Val.IntVal.getNumWords(); ++i)
+ Dest[i] = Src[i];
}
- } else {
- switch (Ty->getTypeID()) {
- 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;
- Store4BytesBigEndian:
- 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::PointerTyID: if (getTargetData()->getPointerSize() == 4)
- goto Store4BytesBigEndian;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID:
- Ptr->Untyped[7] = (unsigned char)(Val.ULongVal );
- Ptr->Untyped[6] = (unsigned char)(Val.ULongVal >> 8);
- Ptr->Untyped[5] = (unsigned char)(Val.ULongVal >> 16);
- Ptr->Untyped[4] = (unsigned char)(Val.ULongVal >> 24);
- Ptr->Untyped[3] = (unsigned char)(Val.ULongVal >> 32);
- Ptr->Untyped[2] = (unsigned char)(Val.ULongVal >> 40);
- Ptr->Untyped[1] = (unsigned char)(Val.ULongVal >> 48);
- Ptr->Untyped[0] = (unsigned char)(Val.ULongVal >> 56);
+ break;
+ }
+ case Type::FloatTyID:
+ *((float*)Ptr) = Val.FloatVal;
+ break;
+ case Type::DoubleTyID:
+ *((double*)Ptr) = Val.DoubleVal;
+ break;
+ case Type::X86_FP80TyID: {
+ uint16_t *Dest = (uint16_t*)Ptr;
+ const uint16_t *Src = (uint16_t*)Val.IntVal.getRawData();
+ // This is endian dependent, but it will only work on x86 anyway.
+ Dest[0] = Src[4];
+ Dest[1] = Src[0];
+ Dest[2] = Src[1];
+ Dest[3] = Src[2];
+ Dest[4] = Src[3];
break;
- default:
- std::cout << "Cannot store value of type " << *Ty << "!\n";
}
+ case Type::PointerTyID:
+ *((PointerTy*)Ptr) = Val.PointerVal;
+ break;
+ default:
+ cerr << "Cannot store value of type " << *Ty << "!\n";
}
}
/// FIXME: document
///
-GenericValue ExecutionEngine::LoadValueFromMemory(GenericValue *Ptr,
+void ExecutionEngine::LoadValueFromMemory(GenericValue &Result,
+ GenericValue *Ptr,
const Type *Ty) {
- GenericValue Result;
- if (getTargetData()->isLittleEndian()) {
- switch (Ty->getTypeID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Result.UByteVal = Ptr->Untyped[0]; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Result.UShortVal = (unsigned)Ptr->Untyped[0] |
- ((unsigned)Ptr->Untyped[1] << 8);
- break;
- Load4BytesLittleEndian:
- case Type::FloatTyID:
- case Type::UIntTyID:
- case Type::IntTyID: Result.UIntVal = (unsigned)Ptr->Untyped[0] |
- ((unsigned)Ptr->Untyped[1] << 8) |
- ((unsigned)Ptr->Untyped[2] << 16) |
- ((unsigned)Ptr->Untyped[3] << 24);
- break;
- case Type::PointerTyID: if (getTargetData()->getPointerSize() == 4)
- goto Load4BytesLittleEndian;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID: Result.ULongVal = (uint64_t)Ptr->Untyped[0] |
- ((uint64_t)Ptr->Untyped[1] << 8) |
- ((uint64_t)Ptr->Untyped[2] << 16) |
- ((uint64_t)Ptr->Untyped[3] << 24) |
- ((uint64_t)Ptr->Untyped[4] << 32) |
- ((uint64_t)Ptr->Untyped[5] << 40) |
- ((uint64_t)Ptr->Untyped[6] << 48) |
- ((uint64_t)Ptr->Untyped[7] << 56);
- break;
- default:
- std::cout << "Cannot load value of type " << *Ty << "!\n";
- abort();
- }
- } else {
- switch (Ty->getTypeID()) {
- case Type::BoolTyID:
- case Type::UByteTyID:
- case Type::SByteTyID: Result.UByteVal = Ptr->Untyped[0]; break;
- case Type::UShortTyID:
- case Type::ShortTyID: Result.UShortVal = (unsigned)Ptr->Untyped[1] |
- ((unsigned)Ptr->Untyped[0] << 8);
- break;
- Load4BytesBigEndian:
- case Type::FloatTyID:
- case Type::UIntTyID:
- case Type::IntTyID: Result.UIntVal = (unsigned)Ptr->Untyped[3] |
- ((unsigned)Ptr->Untyped[2] << 8) |
- ((unsigned)Ptr->Untyped[1] << 16) |
- ((unsigned)Ptr->Untyped[0] << 24);
- break;
- case Type::PointerTyID: if (getTargetData()->getPointerSize() == 4)
- goto Load4BytesBigEndian;
- case Type::DoubleTyID:
- case Type::ULongTyID:
- case Type::LongTyID: Result.ULongVal = (uint64_t)Ptr->Untyped[7] |
- ((uint64_t)Ptr->Untyped[6] << 8) |
- ((uint64_t)Ptr->Untyped[5] << 16) |
- ((uint64_t)Ptr->Untyped[4] << 24) |
- ((uint64_t)Ptr->Untyped[3] << 32) |
- ((uint64_t)Ptr->Untyped[2] << 40) |
- ((uint64_t)Ptr->Untyped[1] << 48) |
- ((uint64_t)Ptr->Untyped[0] << 56);
- break;
- default:
- std::cout << "Cannot load value of type " << *Ty << "!\n";
- abort();
- }
+ switch (Ty->getTypeID()) {
+ case Type::IntegerTyID: {
+ unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
+ if (BitWidth <= 8)
+ Result.IntVal = APInt(BitWidth, *((uint8_t*)Ptr));
+ else if (BitWidth <= 16) {
+ Result.IntVal = APInt(BitWidth, *((uint16_t*)Ptr));
+ } else if (BitWidth <= 32) {
+ Result.IntVal = APInt(BitWidth, *((uint32_t*)Ptr));
+ } else if (BitWidth <= 64) {
+ Result.IntVal = APInt(BitWidth, *((uint64_t*)Ptr));
+ } else
+ Result.IntVal = APInt(BitWidth, (BitWidth+63)/64, (uint64_t*)Ptr);
+ break;
+ }
+ case Type::FloatTyID:
+ Result.FloatVal = *((float*)Ptr);
+ break;
+ case Type::DoubleTyID:
+ Result.DoubleVal = *((double*)Ptr);
+ break;
+ case Type::PointerTyID:
+ Result.PointerVal = *((PointerTy*)Ptr);
+ break;
+ case Type::X86_FP80TyID: {
+ // This is endian dependent, but it will only work on x86 anyway.
+ uint16_t x[8], *p = (uint16_t*)Ptr;
+ x[0] = p[1];
+ x[1] = p[2];
+ x[2] = p[3];
+ x[3] = p[4];
+ x[4] = p[0];
+ Result.IntVal = APInt(80, 2, x);
+ break;
+ }
+ default:
+ cerr << "Cannot load value of type " << *Ty << "!\n";
+ abort();
}
- return Result;
}
// InitializeMemory - Recursive function to apply a Constant value into the
void ExecutionEngine::InitializeMemory(const Constant *Init, void *Addr) {
if (isa<UndefValue>(Init)) {
return;
- } else if (const ConstantPacked *CP = dyn_cast<ConstantPacked>(Init)) {
+ } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(Init)) {
unsigned ElementSize =
getTargetData()->getTypeSize(CP->getType()->getElementType());
for (unsigned i = 0, e = CP->getNumOperands(); i != e; ++i)
const StructLayout *SL =
getTargetData()->getStructLayout(cast<StructType>(CPS->getType()));
for (unsigned i = 0, e = CPS->getNumOperands(); i != e; ++i)
- InitializeMemory(CPS->getOperand(i), (char*)Addr+SL->MemberOffsets[i]);
+ InitializeMemory(CPS->getOperand(i), (char*)Addr+SL->getElementOffset(i));
return;
}
default:
- std::cerr << "Bad Type: " << *Init->getType() << "\n";
+ cerr << "Bad Type: " << *Init->getType() << "\n";
assert(0 && "Unknown constant type to initialize memory with!");
}
}
const TargetData *TD = getTargetData();
// Loop over all of the global variables in the program, allocating the memory
- // to hold them.
- Module &M = getModule();
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I)
- if (!I->isExternal()) {
- // Get the type of the global...
- const Type *Ty = I->getType()->getElementType();
-
- // Allocate some memory for it!
- unsigned Size = TD->getTypeSize(Ty);
- addGlobalMapping(I, new char[Size]);
- } else {
- // External variable reference. Try to use the dynamic loader to
- // get a pointer to it.
- if (void *SymAddr = sys::DynamicLibrary::SearchForAddressOfSymbol(
- I->getName().c_str()))
- addGlobalMapping(I, SymAddr);
- else {
- std::cerr << "Could not resolve external global address: "
- << I->getName() << "\n";
- abort();
+ // to hold them. If there is more than one module, do a prepass over globals
+ // to figure out how the different modules should link together.
+ //
+ std::map<std::pair<std::string, const Type*>,
+ const GlobalValue*> LinkedGlobalsMap;
+
+ if (Modules.size() != 1) {
+ for (unsigned m = 0, e = Modules.size(); m != e; ++m) {
+ Module &M = *Modules[m]->getModule();
+ for (Module::const_global_iterator I = M.global_begin(),
+ E = M.global_end(); I != E; ++I) {
+ const GlobalValue *GV = I;
+ if (GV->hasInternalLinkage() || GV->isDeclaration() ||
+ GV->hasAppendingLinkage() || !GV->hasName())
+ continue;// Ignore external globals and globals with internal linkage.
+
+ const GlobalValue *&GVEntry =
+ LinkedGlobalsMap[std::make_pair(GV->getName(), GV->getType())];
+
+ // If this is the first time we've seen this global, it is the canonical
+ // version.
+ if (!GVEntry) {
+ GVEntry = GV;
+ continue;
+ }
+
+ // If the existing global is strong, never replace it.
+ if (GVEntry->hasExternalLinkage() ||
+ GVEntry->hasDLLImportLinkage() ||
+ GVEntry->hasDLLExportLinkage())
+ continue;
+
+ // Otherwise, we know it's linkonce/weak, replace it if this is a strong
+ // symbol.
+ if (GV->hasExternalLinkage() || GVEntry->hasExternalWeakLinkage())
+ GVEntry = GV;
}
}
-
- // Now that all of the globals are set up in memory, loop through them all and
- // initialize their contents.
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I)
- if (!I->isExternal())
- EmitGlobalVariable(I);
+ }
+
+ std::vector<const GlobalValue*> NonCanonicalGlobals;
+ for (unsigned m = 0, e = Modules.size(); m != e; ++m) {
+ Module &M = *Modules[m]->getModule();
+ for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
+ // In the multi-module case, see what this global maps to.
+ if (!LinkedGlobalsMap.empty()) {
+ if (const GlobalValue *GVEntry =
+ LinkedGlobalsMap[std::make_pair(I->getName(), I->getType())]) {
+ // If something else is the canonical global, ignore this one.
+ if (GVEntry != &*I) {
+ NonCanonicalGlobals.push_back(I);
+ continue;
+ }
+ }
+ }
+
+ if (!I->isDeclaration()) {
+ // Get the type of the global.
+ const Type *Ty = I->getType()->getElementType();
+
+ // Allocate some memory for it!
+ unsigned Size = TD->getTypeSize(Ty);
+ addGlobalMapping(I, new char[Size]);
+ } else {
+ // External variable reference. Try to use the dynamic loader to
+ // get a pointer to it.
+ if (void *SymAddr =
+ sys::DynamicLibrary::SearchForAddressOfSymbol(I->getName().c_str()))
+ addGlobalMapping(I, SymAddr);
+ else {
+ cerr << "Could not resolve external global address: "
+ << I->getName() << "\n";
+ abort();
+ }
+ }
+ }
+
+ // If there are multiple modules, map the non-canonical globals to their
+ // canonical location.
+ if (!NonCanonicalGlobals.empty()) {
+ for (unsigned i = 0, e = NonCanonicalGlobals.size(); i != e; ++i) {
+ const GlobalValue *GV = NonCanonicalGlobals[i];
+ const GlobalValue *CGV =
+ LinkedGlobalsMap[std::make_pair(GV->getName(), GV->getType())];
+ void *Ptr = getPointerToGlobalIfAvailable(CGV);
+ assert(Ptr && "Canonical global wasn't codegen'd!");
+ addGlobalMapping(GV, getPointerToGlobalIfAvailable(CGV));
+ }
+ }
+
+ // Now that all of the globals are set up in memory, loop through them all
+ // and initialize their contents.
+ for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
+ if (!I->isDeclaration()) {
+ if (!LinkedGlobalsMap.empty()) {
+ if (const GlobalValue *GVEntry =
+ LinkedGlobalsMap[std::make_pair(I->getName(), I->getType())])
+ if (GVEntry != &*I) // Not the canonical variable.
+ continue;
+ }
+ EmitGlobalVariable(I);
+ }
+ }
+ }
}
// EmitGlobalVariable - This method emits the specified global variable to the
// already in the map.
void ExecutionEngine::EmitGlobalVariable(const GlobalVariable *GV) {
void *GA = getPointerToGlobalIfAvailable(GV);
- DEBUG(std::cerr << "Global '" << GV->getName() << "' -> " << GA << "\n");
+ DOUT << "Global '" << GV->getName() << "' -> " << GA << "\n";
const Type *ElTy = GV->getType()->getElementType();
size_t GVSize = (size_t)getTargetData()->getTypeSize(ElTy);