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main.cpp
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#include <iostream>
#include <llvm/IR/CallSite.h>
#include <llvm/IR/GetElementPtrTypeIterator.h>
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/InstVisitor.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Type.h>
#include <llvm/IR/DataLayout.h>
#include <llvm/Support/CommandLine.h>
#include <llvm/Support/Debug.h>
#include <llvm/Support/DynamicLibrary.h>
#include <llvm/Support/Format.h>
#include <llvm/Support/ManagedStatic.h>
#include <llvm/Support/MathExtras.h>
#include <llvm/Support/Memory.h>
#include <llvm/Support/MemoryBuffer.h>
#include <llvm/Support/Path.h>
#include <llvm/Support/PrettyStackTrace.h>
#include <llvm/Support/Process.h>
#include <llvm/Support/Program.h>
#include <llvm/Support/Signals.h>
#include <llvm/Support/SourceMgr.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Support/raw_ostream.h>
#include "llvm/IR/ValueSymbolTable.h"
#include <llvm/IR/GetElementPtrTypeIterator.h>
#include <llvm/IR/Function.h>
#include <llvm/ADT/ArrayRef.h>
#include <llvm/IRReader/IRReader.h>
#include "llvmir_tests.h"
#include "llvmir-emul.h"
using namespace llvm;
using namespace std;
namespace retdec {
namespace llvmir_emul {
namespace {
template<typename T>
std::string llvmObjToString(const T *t) {
std::string str;
llvm::raw_string_ostream ss(str);
if (t) {
t->print(ss);
cout << t << endl;
} else {
ss << "nullptr";
cout << ss.str() << endl;
}
return ss.str();
}
//
//=============================================================================
// Binary Instruction Implementations
//=============================================================================
//
#define IMPLEMENT_BINARY_OPERATOR(OP, TY) \
case Type::TY##TyID: \
Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; \
break
void executeFAddInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty) {
switch (Ty->getTypeID()) {
IMPLEMENT_BINARY_OPERATOR(+, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(+, Double);
default:
dbgs() << "Unhandled type for FAdd instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFSubInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
IMPLEMENT_BINARY_OPERATOR(-, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(-, Double);
default:
dbgs() << "Unhandled type for FSub instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFMulInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
IMPLEMENT_BINARY_OPERATOR(*, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(*, Double);
default:
dbgs() << "Unhandled type for FMul instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFDivInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
IMPLEMENT_BINARY_OPERATOR(/, Float);
case Type::X86_FP80TyID:
IMPLEMENT_BINARY_OPERATOR(/, Double);
default:
dbgs() << "Unhandled type for FDiv instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
void executeFRemInst(
GenericValue &Dest,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
switch (Ty->getTypeID())
{
case Type::FloatTyID:
Dest.FloatVal = fmod(Src1.FloatVal, Src2.FloatVal);
break;
case Type::X86_FP80TyID:
case Type::DoubleTyID:
Dest.DoubleVal = fmod(Src1.DoubleVal, Src2.DoubleVal);
break;
default:
dbgs() << "Unhandled type for Rem instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
}
#define IMPLEMENT_INTEGER_ICMP(OP, TY) \
case Type::IntegerTyID: \
Dest.IntVal = APInt(1,Src1.IntVal.OP(Src2.IntVal)); \
break;
#define IMPLEMENT_VECTOR_INTEGER_ICMP(OP, TY) \
case Type::VectorTyID: \
{ \
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size()); \
Dest.AggregateVal.resize( Src1.AggregateVal.size() ); \
for(uint32_t _i=0;_i<Src1.AggregateVal.size();_i++) \
Dest.AggregateVal[_i].IntVal = APInt(1, \
Src1.AggregateVal[_i].IntVal.OP(Src2.AggregateVal[_i].IntVal));\
} break;
// Handle pointers specially because they must be compared with only as much
// width as the host has. We _do not_ want to be comparing 64 bit values when
// running on a 32-bit target, otherwise the upper 32 bits might mess up
// comparisons if they contain garbage.
// Matula: This may not be the case for emulation, but it will probable be ok.
#define IMPLEMENT_POINTER_ICMP(OP) \
case Type::PointerTyID: \
Dest.IntVal = APInt(1, *(reinterpret_cast<int *>(reinterpret_cast<intptr_t>(Src1.PointerVal))) OP \
*(reinterpret_cast<int *>(reinterpret_cast<intptr_t>(Src2.PointerVal)))); \
break;
GenericValue executeICMP_EQ(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(eq,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(eq,Ty);
IMPLEMENT_POINTER_ICMP(==);
default:
dbgs() << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_NE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ne,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ne,Ty);
IMPLEMENT_POINTER_ICMP(!=);
default:
dbgs() << "Unhandled type for ICMP_EQ predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_ULT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ult,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ult,Ty);
IMPLEMENT_POINTER_ICMP(<);
default:
dbgs() << "Unhandled type for ICMP_ULT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SLT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(slt,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(slt,Ty);
IMPLEMENT_POINTER_ICMP(<);
default:
dbgs() << "Unhandled type for ICMP_SLT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_UGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ugt,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ugt,Ty);
IMPLEMENT_POINTER_ICMP(>);
default:
dbgs() << "Unhandled type for ICMP_UGT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(sgt,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(sgt,Ty);
IMPLEMENT_POINTER_ICMP(>);
default:
dbgs() << "Unhandled type for ICMP_SGT predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_ULE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(ule,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(ule,Ty);
IMPLEMENT_POINTER_ICMP(<=);
default:
dbgs() << "Unhandled type for ICMP_ULE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SLE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(sle,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(sle,Ty);
IMPLEMENT_POINTER_ICMP(<=);
default:
dbgs() << "Unhandled type for ICMP_SLE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_UGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(uge,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(uge,Ty);
IMPLEMENT_POINTER_ICMP(>=);
default:
dbgs() << "Unhandled type for ICMP_UGE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeICMP_SGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_INTEGER_ICMP(sge,Ty);
IMPLEMENT_VECTOR_INTEGER_ICMP(sge,Ty);
IMPLEMENT_POINTER_ICMP(>=);
default:
dbgs() << "Unhandled type for ICMP_SGE predicate: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
//
//=============================================================================
// Binary Instruction Implementations(Float)
//=============================================================================
//
#define IMPLEMENT_FCMP(OP, TY) \
case Type::TY##TyID: \
Dest.IntVal = APInt(1,Src1.TY##Val OP Src2.TY##Val); \
break
#define IMPLEMENT_VECTOR_FCMP_T(OP, TY) \
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size()); \
Dest.AggregateVal.resize( Src1.AggregateVal.size() ); \
for( uint32_t _i=0;_i<Src1.AggregateVal.size();_i++) \
Dest.AggregateVal[_i].IntVal = APInt(1, \
Src1.AggregateVal[_i].TY##Val OP Src2.AggregateVal[_i].TY##Val);\
break;
#define IMPLEMENT_VECTOR_FCMP(OP) \
case Type::VectorTyID: \
if (cast<VectorType>(Ty)->getElementType()->isFloatTy()) \
{ \
IMPLEMENT_VECTOR_FCMP_T(OP, Float); \
} \
else \
{ \
IMPLEMENT_VECTOR_FCMP_T(OP, Double); \
}
GenericValue executeFCMP_OEQ(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(==, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(==, Double);
IMPLEMENT_VECTOR_FCMP(==);
default:
dbgs() << "Unhandled type for FCmp EQ instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
#define IMPLEMENT_SCALAR_NANS(TY, X,Y) \
if (TY->isFloatTy()) \
{ \
if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) \
{ \
Dest.IntVal = APInt(1,false); \
return Dest; \
} \
} \
else \
{ \
if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) \
{ \
Dest.IntVal = APInt(1,false); \
return Dest; \
} \
}
#define MASK_VECTOR_NANS_T(X,Y, TZ, FLAG) \
assert(X.AggregateVal.size() == Y.AggregateVal.size()); \
Dest.AggregateVal.resize( X.AggregateVal.size() ); \
for( uint32_t _i=0;_i<X.AggregateVal.size();_i++) \
{ \
if (X.AggregateVal[_i].TZ##Val != X.AggregateVal[_i].TZ##Val || \
Y.AggregateVal[_i].TZ##Val != Y.AggregateVal[_i].TZ##Val) \
Dest.AggregateVal[_i].IntVal = APInt(1,FLAG); \
else \
{ \
Dest.AggregateVal[_i].IntVal = APInt(1,!FLAG); \
} \
}
#define MASK_VECTOR_NANS(TY, X,Y, FLAG) \
if (TY->isVectorTy()) \
{ \
if (cast<VectorType>(TY)->getElementType()->isFloatTy()) \
{ \
MASK_VECTOR_NANS_T(X, Y, Float, FLAG) \
} \
else \
{ \
MASK_VECTOR_NANS_T(X, Y, Double, FLAG) \
} \
}
static GenericValue executeFCMP_ONE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
// if input is scalar value and Src1 or Src2 is NaN return false
IMPLEMENT_SCALAR_NANS(Ty, Src1, Src2)
// if vector input detect NaNs and fill mask
MASK_VECTOR_NANS(Ty, Src1, Src2, false)
GenericValue DestMask = Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(!=, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(!=, Double);
IMPLEMENT_VECTOR_FCMP(!=);
default:
dbgs() << "Unhandled type for FCmp NE instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
// in vector case mask out NaN elements
if (Ty->isVectorTy())
for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++)
if (DestMask.AggregateVal[_i].IntVal == false)
Dest.AggregateVal[_i].IntVal = APInt(1,false);
return Dest;
}
GenericValue executeFCMP_OLE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(<=, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(<=, Double);
IMPLEMENT_VECTOR_FCMP(<=);
default:
dbgs() << "Unhandled type for FCmp LE instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeFCMP_OGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(>=, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(>=, Double);
IMPLEMENT_VECTOR_FCMP(>=);
default:
dbgs() << "Unhandled type for FCmp GE instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeFCMP_OLT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(<, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(<, Double);
IMPLEMENT_VECTOR_FCMP(<);
default:
dbgs() << "Unhandled type for FCmp LT instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
GenericValue executeFCMP_OGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
switch (Ty->getTypeID())
{
IMPLEMENT_FCMP(>, Float);
case Type::X86_FP80TyID:
IMPLEMENT_FCMP(>, Double);
IMPLEMENT_VECTOR_FCMP(>);
default:
dbgs() << "Unhandled type for FCmp GT instruction: " << *Ty << "\n";
llvm_unreachable(nullptr);
}
return Dest;
}
#define IMPLEMENT_UNORDERED(TY, X,Y) \
if (TY->isFloatTy()) \
{ \
if (X.FloatVal != X.FloatVal || Y.FloatVal != Y.FloatVal) \
{ \
Dest.IntVal = APInt(1,true); \
return Dest; \
} \
} else if (X.DoubleVal != X.DoubleVal || Y.DoubleVal != Y.DoubleVal) \
{ \
Dest.IntVal = APInt(1,true); \
return Dest; \
}
#define IMPLEMENT_VECTOR_UNORDERED(TY, X, Y, FUNC) \
if (TY->isVectorTy()) \
{ \
GenericValue DestMask = Dest; \
Dest = FUNC(Src1, Src2, Ty); \
for (size_t _i = 0; _i < Src1.AggregateVal.size(); _i++) \
if (DestMask.AggregateVal[_i].IntVal == true) \
Dest.AggregateVal[_i].IntVal = APInt(1, true); \
return Dest; \
}
GenericValue executeFCMP_UEQ(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OEQ)
return executeFCMP_OEQ(Src1, Src2, Ty);
}
GenericValue executeFCMP_UNE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_ONE)
return executeFCMP_ONE(Src1, Src2, Ty);
}
GenericValue executeFCMP_ULE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OLE)
return executeFCMP_OLE(Src1, Src2, Ty);
}
GenericValue executeFCMP_UGE(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OGE)
return executeFCMP_OGE(Src1, Src2, Ty);
}
GenericValue executeFCMP_ULT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OLT)
return executeFCMP_OLT(Src1, Src2, Ty);
}
GenericValue executeFCMP_UGT(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
IMPLEMENT_UNORDERED(Ty, Src1, Src2)
MASK_VECTOR_NANS(Ty, Src1, Src2, true)
IMPLEMENT_VECTOR_UNORDERED(Ty, Src1, Src2, executeFCMP_OGT)
return executeFCMP_OGT(Src1, Src2, Ty);
}
GenericValue executeFCMP_ORD(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
if (cast<VectorType>(Ty)->getElementType()->isFloatTy())
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(
1,
( (Src1.AggregateVal[_i].FloatVal ==
Src1.AggregateVal[_i].FloatVal) &&
(Src2.AggregateVal[_i].FloatVal ==
Src2.AggregateVal[_i].FloatVal)));
}
else
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(
1,
( (Src1.AggregateVal[_i].DoubleVal ==
Src1.AggregateVal[_i].DoubleVal) &&
(Src2.AggregateVal[_i].DoubleVal ==
Src2.AggregateVal[_i].DoubleVal)));
}
}
else if (Ty->isFloatTy())
{
Dest.IntVal = APInt(1,(Src1.FloatVal == Src1.FloatVal &&
Src2.FloatVal == Src2.FloatVal));
}
else
{
Dest.IntVal = APInt(1,(Src1.DoubleVal == Src1.DoubleVal &&
Src2.DoubleVal == Src2.DoubleVal));
}
return Dest;
}
GenericValue executeFCMP_UNO(
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
if (cast<VectorType>(Ty)->getElementType()->isFloatTy())
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(
1,
( (Src1.AggregateVal[_i].FloatVal !=
Src1.AggregateVal[_i].FloatVal) ||
(Src2.AggregateVal[_i].FloatVal !=
Src2.AggregateVal[_i].FloatVal)));
}
else
{
for( size_t _i=0;_i<Src1.AggregateVal.size();_i++)
Dest.AggregateVal[_i].IntVal = APInt(1,
( (Src1.AggregateVal[_i].DoubleVal !=
Src1.AggregateVal[_i].DoubleVal) ||
(Src2.AggregateVal[_i].DoubleVal !=
Src2.AggregateVal[_i].DoubleVal)));
}
}
else if (Ty->isFloatTy())
{
Dest.IntVal = APInt(1,(Src1.FloatVal != Src1.FloatVal ||
Src2.FloatVal != Src2.FloatVal));
}
else
{
Dest.IntVal = APInt(1,(Src1.DoubleVal != Src1.DoubleVal ||
Src2.DoubleVal != Src2.DoubleVal));
}
return Dest;
}
GenericValue executeFCMP_BOOL(
GenericValue Src1,
GenericValue Src2,
Type *Ty,
const bool val)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
for( size_t _i=0; _i<Src1.AggregateVal.size(); _i++)
{
Dest.AggregateVal[_i].IntVal = APInt(1,val);
}
}
else
{
Dest.IntVal = APInt(1, val);
}
return Dest;
}
GenericValue executeCmpInst(
unsigned predicate,
GenericValue Src1,
GenericValue Src2,
Type *Ty)
{
GenericValue Result;
switch (predicate)
{
case ICmpInst::ICMP_EQ: return executeICMP_EQ(Src1, Src2, Ty);
case ICmpInst::ICMP_NE: return executeICMP_NE(Src1, Src2, Ty);
case ICmpInst::ICMP_UGT: return executeICMP_UGT(Src1, Src2, Ty);
case ICmpInst::ICMP_SGT: return executeICMP_SGT(Src1, Src2, Ty);
case ICmpInst::ICMP_ULT: return executeICMP_ULT(Src1, Src2, Ty);
case ICmpInst::ICMP_SLT: return executeICMP_SLT(Src1, Src2, Ty);
case ICmpInst::ICMP_UGE: return executeICMP_UGE(Src1, Src2, Ty);
case ICmpInst::ICMP_SGE: return executeICMP_SGE(Src1, Src2, Ty);
case ICmpInst::ICMP_ULE: return executeICMP_ULE(Src1, Src2, Ty);
case ICmpInst::ICMP_SLE: return executeICMP_SLE(Src1, Src2, Ty);
case FCmpInst::FCMP_ORD: return executeFCMP_ORD(Src1, Src2, Ty);
case FCmpInst::FCMP_UNO: return executeFCMP_UNO(Src1, Src2, Ty);
case FCmpInst::FCMP_OEQ: return executeFCMP_OEQ(Src1, Src2, Ty);
case FCmpInst::FCMP_UEQ: return executeFCMP_UEQ(Src1, Src2, Ty);
case FCmpInst::FCMP_ONE: return executeFCMP_ONE(Src1, Src2, Ty);
case FCmpInst::FCMP_UNE: return executeFCMP_UNE(Src1, Src2, Ty);
case FCmpInst::FCMP_OLT: return executeFCMP_OLT(Src1, Src2, Ty);
case FCmpInst::FCMP_ULT: return executeFCMP_ULT(Src1, Src2, Ty);
case FCmpInst::FCMP_OGT: return executeFCMP_OGT(Src1, Src2, Ty);
case FCmpInst::FCMP_UGT: return executeFCMP_UGT(Src1, Src2, Ty);
case FCmpInst::FCMP_OLE: return executeFCMP_OLE(Src1, Src2, Ty);
case FCmpInst::FCMP_ULE: return executeFCMP_ULE(Src1, Src2, Ty);
case FCmpInst::FCMP_OGE: return executeFCMP_OGE(Src1, Src2, Ty);
case FCmpInst::FCMP_UGE: return executeFCMP_UGE(Src1, Src2, Ty);
case FCmpInst::FCMP_FALSE: return executeFCMP_BOOL(Src1, Src2, Ty, false);
case FCmpInst::FCMP_TRUE: return executeFCMP_BOOL(Src1, Src2, Ty, true);
default:
dbgs() << "Unhandled Cmp predicate\n";
llvm_unreachable(nullptr);
}
return Result;
}
//
//=============================================================================
// Ternary Instruction Implementations
//=============================================================================
//
GenericValue executeSelectInst(
GenericValue Src1,
GenericValue Src2,
GenericValue Src3,
Type *Ty)
{
GenericValue Dest;
if(Ty->isVectorTy())
{
assert(Src1.AggregateVal.size() == Src2.AggregateVal.size());
assert(Src2.AggregateVal.size() == Src3.AggregateVal.size());
Dest.AggregateVal.resize( Src1.AggregateVal.size() );
for (size_t i = 0; i < Src1.AggregateVal.size(); ++i)
Dest.AggregateVal[i] = (Src1.AggregateVal[i].IntVal == 0) ?
Src3.AggregateVal[i] : Src2.AggregateVal[i];
}
else
{
Dest = (Src1.IntVal == 0) ? Src3 : Src2;
}
return Dest;
}
//
//=============================================================================
// Terminator Instruction Implementations
//=============================================================================
//
// switchToNewBasicBlock - This method is used to jump to a new basic block.
// This function handles the actual updating of block and instruction iterators
// as well as execution of all of the PHI nodes in the destination block.
//
// This method does this because all of the PHI nodes must be executed
// atomically, reading their inputs before any of the results are updated. Not
// doing this can cause problems if the PHI nodes depend on other PHI nodes for
// their inputs. If the input PHI node is updated before it is read, incorrect
// results can happen. Thus we use a two phase approach.
//
void switchToNewBasicBlock(
BasicBlock* Dest,
LocalExecutionContext& SF,
GlobalExecutionContext& GC)
{
BasicBlock *PrevBB = SF.curBB; // Remember where we came from...
SF.curBB = Dest; // Update CurBB to branch destination
SF.curInst = SF.curBB->begin(); // Update new instruction ptr...
if (!isa<PHINode>(SF.curInst))
{
return; // Nothing fancy to do
}
// Loop over all of the PHI nodes in the current block, reading their inputs.
std::vector<GenericValue> ResultValues;
for (; PHINode *PN = dyn_cast<PHINode>(SF.curInst); ++SF.curInst)
{
// Search for the value corresponding to this previous bb...
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(GC.getOperandValue(IncomingValue, SF));
}
// Now loop over all of the PHI nodes setting their values...
SF.curInst = SF.curBB->begin();
for (unsigned i = 0; isa<PHINode>(SF.curInst); ++SF.curInst, ++i)
{
PHINode *PN = cast<PHINode>(SF.curInst);
GC.setValue(PN, ResultValues[i]);
}
}
//
//=============================================================================
// Memory Instruction Implementations
//=============================================================================
//
/**
* getElementOffset - The workhorse for getelementptr.
*/
GenericValue executeGEPOperation(
Value *Ptr,
gep_type_iterator I,
gep_type_iterator E,
LocalExecutionContext& SF,
GlobalExecutionContext& GC)
{
assert(Ptr->getType()->isPointerTy()
&& "Cannot getElementOffset of a nonpointer type!");
const DataLayout *DL = GC.getModule()->getDataLayout(); // **** change auto to const
uint64_t Total = 0;
for (; I != E; ++I)
{
if (StructType *STy = dyn_cast<StructType>((I.operator*()))) //**** I.getStructTypeOrNull()
{
const StructLayout *SLO = DL->getStructLayout(STy); // **** change . to ->
const ConstantInt *CPU = cast<ConstantInt>(I.getOperand());
unsigned Index = unsigned(CPU->getZExtValue());
Total += SLO->getElementOffset(Index);
}
else
{
// Get the index number for the array... which must be long type...
GenericValue IdxGV = GC.getOperandValue(I.getOperand(), SF);
int64_t Idx;
unsigned BitWidth = cast<IntegerType>(
I.getOperand()->getType())->getBitWidth();
if (BitWidth == 32)
{
Idx = static_cast<int64_t>(static_cast<int32_t>(IdxGV.IntVal.getZExtValue()));
}
else
{
assert(BitWidth == 64 && "Invalid index type for getelementptr");
Idx = static_cast<int64_t>(IdxGV.IntVal.getZExtValue());
}
Total += DL->getTypeAllocSize(I.getIndexedType()) * Idx; // **** change . to ->
}
}
GenericValue Result;
Result.PointerVal = static_cast<char*>(GC.getOperandValue(Ptr, SF).PointerVal) + Total;
return Result;
}
//
//=============================================================================
// Conversion Instruction Implementations
//=============================================================================
//
GenericValue executeTruncInst(
Value *SrcVal,
Type *DstTy,
LocalExecutionContext &SF,
GlobalExecutionContext& GC)
{
GenericValue Dest, Src = GC.getOperandValue(SrcVal, SF);
Type *SrcTy = SrcVal->getType();
if (SrcTy->isVectorTy())
{
Type *DstVecTy = DstTy->getScalarType();
unsigned DBitWidth = cast<IntegerType>(DstVecTy)->getBitWidth();
unsigned NumElts = Src.AggregateVal.size();
// the sizes of src and dst vectors must be equal
Dest.AggregateVal.resize(NumElts);
for (unsigned i = 0; i < NumElts; i++)
Dest.AggregateVal[i].IntVal = Src.AggregateVal[i].IntVal.trunc(DBitWidth);
}
else
{
IntegerType *DITy = cast<IntegerType>(DstTy);
unsigned DBitWidth = DITy->getBitWidth();
Dest.IntVal = Src.IntVal.trunc(DBitWidth);
}
return Dest;
}
GenericValue executeSExtInst(
Value *SrcVal,
Type *DstTy,
LocalExecutionContext &SF,
GlobalExecutionContext& GC)
{
Type *SrcTy = SrcVal->getType();
GenericValue Dest, Src = GC.getOperandValue(SrcVal, SF);
if (SrcTy->isVectorTy())
{
Type *DstVecTy = DstTy->getScalarType();