//===-- ExecutionEngine.cpp - Common Implementation shared by EEs ---------===//
-//
+//
// 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 defines the common interface used by the various execution engine
// subclasses.
//
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/ModuleProvider.h"
+#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/System/DynamicLibrary.h"
#include "llvm/Target/TargetData.h"
-#include "Support/Debug.h"
-#include "Support/Statistic.h"
-#include "Support/DynamicLinker.h"
using namespace llvm;
namespace {
Statistic<> NumGlobals ("lli", "Number of global vars initialized");
}
-ExecutionEngine::ExecutionEngine(ModuleProvider *P) :
+ExecutionEngine::ExecutionEngine(ModuleProvider *P) :
CurMod(*P->getModule()), MP(P) {
assert(P && "ModuleProvider is null?");
}
const GlobalValue *ExecutionEngine::getGlobalValueAtAddress(void *Addr) {
// If we haven't computed the reverse mapping yet, do so first.
if (GlobalAddressReverseMap.empty()) {
- for (std::map<const GlobalValue*, void *>::iterator I =
+ for (std::map<const GlobalValue*, void *>::iterator I =
GlobalAddressMap.begin(), E = GlobalAddressMap.end(); I != E; ++I)
GlobalAddressReverseMap.insert(std::make_pair(I->second, I->first));
}
unsigned Size = InputArgv[i].size()+1;
char *Dest = new char[Size];
DEBUG(std::cerr << "ARGV[" << i << "] = " << (void*)Dest << "\n");
-
+
std::copy(InputArgv[i].begin(), InputArgv[i].end(), Dest);
Dest[Size-1] = 0;
-
+
// Endian safe: Result[i] = (PointerTy)Dest;
EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Result+i*PtrSize),
SBytePtr);
std::vector<GenericValue> GVArgs;
GenericValue GVArgc;
GVArgc.IntVal = argv.size();
- GVArgs.push_back(GVArgc); // Arg #0 = argc.
- GVArgs.push_back(PTOGV(CreateArgv(this, argv))); // Arg #1 = argv.
- assert(((char **)GVTOP(GVArgs[1]))[0] && "argv[0] was null after CreateArgv");
-
- std::vector<std::string> EnvVars;
- for (unsigned i = 0; envp[i]; ++i)
- EnvVars.push_back(envp[i]);
- GVArgs.push_back(PTOGV(CreateArgv(this, EnvVars))); // Arg #2 = envp.
+ unsigned NumArgs = Fn->getFunctionType()->getNumParams();
+ if (NumArgs) {
+ GVArgs.push_back(GVArgc); // Arg #0 = argc.
+ if (NumArgs > 1) {
+ GVArgs.push_back(PTOGV(CreateArgv(this, argv))); // Arg #1 = argv.
+ assert(((char **)GVTOP(GVArgs[1]))[0] &&
+ "argv[0] was null after CreateArgv");
+ if (NumArgs > 2) {
+ std::vector<std::string> EnvVars;
+ for (unsigned i = 0; envp[i]; ++i)
+ EnvVars.push_back(envp[i]);
+ GVArgs.push_back(PTOGV(CreateArgv(this, EnvVars))); // Arg #2 = envp.
+ }
+ }
+ }
return runFunction(Fn, GVArgs).IntVal;
}
/// If possible, create a JIT, unless the caller specifically requests an
/// Interpreter or there's an error. If even an Interpreter cannot be created,
-/// NULL is returned.
+/// NULL is returned.
///
-ExecutionEngine *ExecutionEngine::create(ModuleProvider *MP,
+ExecutionEngine *ExecutionEngine::create(ModuleProvider *MP,
bool ForceInterpreter,
IntrinsicLowering *IL) {
ExecutionEngine *EE = 0;
}
}
- if (EE == 0) delete IL;
+ if (EE == 0)
+ delete IL;
+ else
+ // Make sure we can resolve symbols in the program as well. The zero arg
+ // to the function tells DynamicLibrary to load the program, not a library.
+ sys::DynamicLibrary::LoadLibraryPermanently(0);
+
return EE;
}
}
/// FIXME: document
-///
+///
GenericValue ExecutionEngine::getConstantValue(const Constant *C) {
GenericValue Result;
+ if (isa<UndefValue>(C)) return Result;
if (ConstantExpr *CE = const_cast<ConstantExpr*>(dyn_cast<ConstantExpr>(C))) {
switch (CE->getOpcode()) {
std::vector<Value*> Indexes(CE->op_begin()+1, CE->op_end());
uint64_t Offset =
TD->getIndexedOffset(CE->getOperand(0)->getType(), Indexes);
-
+
Result.LongVal += Offset;
return Result;
}
// 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()) {
std::cerr << "ConstantExpr not handled as global var init: " << *CE << "\n";
abort();
}
-
+
switch (C->getType()->getTypeID()) {
-#define GET_CONST_VAL(TY, CLASS) \
- case Type::TY##TyID: Result.TY##Val = cast<CLASS>(C)->getValue(); break
- GET_CONST_VAL(Bool , ConstantBool);
- GET_CONST_VAL(UByte , ConstantUInt);
- GET_CONST_VAL(SByte , ConstantSInt);
- GET_CONST_VAL(UShort , ConstantUInt);
- GET_CONST_VAL(Short , ConstantSInt);
- GET_CONST_VAL(UInt , ConstantUInt);
- GET_CONST_VAL(Int , ConstantSInt);
- GET_CONST_VAL(ULong , ConstantUInt);
- GET_CONST_VAL(Long , ConstantSInt);
- GET_CONST_VAL(Float , ConstantFP);
- GET_CONST_VAL(Double , ConstantFP);
+#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::PointerTyID:
- if (isa<ConstantPointerNull>(C)) {
+ if (isa<ConstantPointerNull>(C))
Result.PointerVal = 0;
- } else if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(C)){
- if (Function *F =
- const_cast<Function*>(dyn_cast<Function>(CPR->getValue())))
- Result = PTOGV(getPointerToFunctionOrStub(F));
- else
- Result = PTOGV(getOrEmitGlobalVariable(
- cast<GlobalVariable>(CPR->getValue())));
-
- } else {
+ else if (const Function *F = dyn_cast<Function>(C))
+ Result = PTOGV(getPointerToFunctionOrStub(const_cast<Function*>(F)));
+ else if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(C))
+ Result = PTOGV(getOrEmitGlobalVariable(const_cast<GlobalVariable*>(GV)));
+ else
assert(0 && "Unknown constant pointer type!");
- }
break;
default:
std::cout << "ERROR: Constant unimp for type: " << *C->getType() << "\n";
goto Store4BytesLittleEndian;
case Type::DoubleTyID:
case Type::ULongTyID:
- case Type::LongTyID: Ptr->Untyped[0] = Val.ULongVal & 255;
- Ptr->Untyped[1] = (Val.ULongVal >> 8) & 255;
- Ptr->Untyped[2] = (Val.ULongVal >> 16) & 255;
- Ptr->Untyped[3] = (Val.ULongVal >> 24) & 255;
- Ptr->Untyped[4] = (Val.ULongVal >> 32) & 255;
- Ptr->Untyped[5] = (Val.ULongVal >> 40) & 255;
- Ptr->Untyped[6] = (Val.ULongVal >> 48) & 255;
- Ptr->Untyped[7] = (Val.ULongVal >> 56) & 255;
- break;
+ 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";
}
goto Store4BytesBigEndian;
case Type::DoubleTyID:
case Type::ULongTyID:
- case Type::LongTyID: Ptr->Untyped[7] = Val.ULongVal & 255;
- Ptr->Untyped[6] = (Val.ULongVal >> 8) & 255;
- Ptr->Untyped[5] = (Val.ULongVal >> 16) & 255;
- Ptr->Untyped[4] = (Val.ULongVal >> 24) & 255;
- Ptr->Untyped[3] = (Val.ULongVal >> 32) & 255;
- Ptr->Untyped[2] = (Val.ULongVal >> 40) & 255;
- Ptr->Untyped[1] = (Val.ULongVal >> 48) & 255;
- Ptr->Untyped[0] = (Val.ULongVal >> 56) & 255;
- break;
+ 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;
default:
std::cout << "Cannot store value of type " << *Ty << "!\n";
}
case Type::ShortTyID: Result.UShortVal = (unsigned)Ptr->Untyped[0] |
((unsigned)Ptr->Untyped[1] << 8);
break;
- Load4BytesLittleEndian:
+ Load4BytesLittleEndian:
case Type::FloatTyID:
case Type::UIntTyID:
case Type::IntTyID: Result.UIntVal = (unsigned)Ptr->Untyped[0] |
// specified memory location...
//
void ExecutionEngine::InitializeMemory(const Constant *Init, void *Addr) {
- if (Init->getType()->isFirstClassType()) {
+ if (isa<UndefValue>(Init)) {
+ return;
+ } else if (Init->getType()->isFirstClassType()) {
GenericValue Val = getConstantValue(Init);
StoreValueToMemory(Val, (GenericValue*)Addr, Init->getType());
return;
} else if (isa<ConstantAggregateZero>(Init)) {
- unsigned Size = getTargetData().getTypeSize(Init->getType());
- memset(Addr, 0, Size);
+ memset(Addr, 0, (size_t)getTargetData().getTypeSize(Init->getType()));
return;
}
switch (Init->getType()->getTypeID()) {
case Type::ArrayTyID: {
const ConstantArray *CPA = cast<ConstantArray>(Init);
- const std::vector<Use> &Val = CPA->getValues();
- unsigned ElementSize =
+ unsigned ElementSize =
getTargetData().getTypeSize(cast<ArrayType>(CPA->getType())->getElementType());
- for (unsigned i = 0; i < Val.size(); ++i)
- InitializeMemory(cast<Constant>(Val[i].get()), (char*)Addr+i*ElementSize);
+ for (unsigned i = 0, e = CPA->getNumOperands(); i != e; ++i)
+ InitializeMemory(CPA->getOperand(i), (char*)Addr+i*ElementSize);
return;
}
const ConstantStruct *CPS = cast<ConstantStruct>(Init);
const StructLayout *SL =
getTargetData().getStructLayout(cast<StructType>(CPS->getType()));
- const std::vector<Use> &Val = CPS->getValues();
- for (unsigned i = 0; i < Val.size(); ++i)
- InitializeMemory(cast<Constant>(Val[i].get()),
- (char*)Addr+SL->MemberOffsets[i]);
+ for (unsigned i = 0, e = CPS->getNumOperands(); i != e; ++i)
+ InitializeMemory(CPS->getOperand(i), (char*)Addr+SL->MemberOffsets[i]);
return;
}
///
void ExecutionEngine::emitGlobals() {
const TargetData &TD = getTargetData();
-
+
// Loop over all of the global variables in the program, allocating the memory
// to hold them.
- for (Module::giterator I = getModule().gbegin(), E = getModule().gend();
+ for (Module::const_global_iterator I = getModule().global_begin(), E = getModule().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 = GetAddressOfSymbol(I->getName().c_str()))
+ if (void *SymAddr = sys::DynamicLibrary::SearchForAddressOfSymbol(
+ I->getName().c_str()))
addGlobalMapping(I, SymAddr);
else {
std::cerr << "Could not resolve external global address: "
abort();
}
}
-
+
// Now that all of the globals are set up in memory, loop through them all and
// initialize their contents.
- for (Module::giterator I = getModule().gbegin(), E = getModule().gend();
+ for (Module::const_global_iterator I = getModule().global_begin(), E = getModule().global_end();
I != E; ++I)
if (!I->isExternal())
EmitGlobalVariable(I);
DEBUG(std::cerr << "Global '" << GV->getName() << "' -> " << GA << "\n");
const Type *ElTy = GV->getType()->getElementType();
+ size_t GVSize = (size_t)getTargetData().getTypeSize(ElTy);
if (GA == 0) {
// If it's not already specified, allocate memory for the global.
- GA = new char[getTargetData().getTypeSize(ElTy)];
+ GA = new char[GVSize];
addGlobalMapping(GV, GA);
}
InitializeMemory(GV->getInitializer(), GA);
- NumInitBytes += getTargetData().getTypeSize(ElTy);
+ NumInitBytes += (unsigned)GVSize;
++NumGlobals;
}
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