void NullDerefProtectionTransformer::handleNonNullArgCall(llvm::Module& M,
const std::string& name, const std::bitset<32>& ArgIndexs) {
// Get the function by the name.
llvm::Function* func = M.getFunction(name);
if (!func)
return;
// Find all the instructions that calls the function.
std::vector<llvm::Instruction*> WorkList;
for (llvm::Value::use_iterator I = func->use_begin(), E = func->use_end();
I != E; ++I) {
llvm::CallSite CS(*I);
if (!CS || CS.getCalledValue() != func)
continue;
WorkList.push_back(CS.getInstruction());
}
// There is no call instructions that call the function and return.
if (WorkList.empty())
return;
// Instrument all the call instructions that call the function.
for (std::vector<llvm::Instruction*>::iterator I = WorkList.begin(),
E = WorkList.end(); I != E; ++I) {
Inst = *I;
Builder->SetInsertPoint(Inst);
instrumentCallInst(Inst, ArgIndexs);
}
return;
}
bool TimeProfiler::runOnModule(llvm::Module &M)
{
Function *Main = M.getFunction("main");
if (Main == 0) {
errs() << "WARNING: cannot insert edge profiling into a module"
<< " with no main function!\n";
return false; // No main, no instrumentation!
}
std::vector<CallInst*> Traped;
Function* wtime = NULL;
for(auto F = M.begin(), E = M.end(); F!=E; ++F){
if((*F).getName() == "mpi_wtime_")
wtime = &*F;
for(auto I = inst_begin(*F), IE = inst_end(*F); I!=IE; ++I){
CallInst* CI = dyn_cast<CallInst>(&*I);
if(CI == NULL) continue;
Value* CV = const_cast<CallInst*>(CI)->getCalledValue();
Function* func = dyn_cast<Function>(castoff(CV));
if(func == NULL)
errs()<<"No func!\n";
StringRef str = func->getName();
if(str.startswith("mpi_"))
{
if(str.startswith("mpi_init_")||str.startswith("mpi_comm_rank_")||str.startswith("mpi_comm_size_"))
continue;
Traped.push_back(CI);
}
}
}
IRBuilder<> Builder(M.getContext());
Type* DoubleTy = Type::getDoubleTy(M.getContext());
Type*ATy = ArrayType::get(DoubleTy, Traped.size());
GlobalVariable* Counters = new GlobalVariable(M, ATy, false,
GlobalVariable::InternalLinkage, Constant::getNullValue(ATy),
"TimeCounters");
unsigned I=0;
for(auto P : Traped){
ArrayRef<Value*> args;
CallInst* callTime = CallInst::Create(wtime, args, "", P);
IncrementTimeCounter(callTime, wtime, I++, Counters, Builder, P);
}
InsertPredProfilingInitCall(Main, "llvm_start_time_profiling", Counters);
return true;
}
bool
IRDynamicChecks::runOnModule(llvm::Module &M)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
llvm::Function* function = M.getFunction(StringRef(m_func_name.c_str()));
if (!function)
{
if (log)
log->Printf("Couldn't find %s() in the module", m_func_name.c_str());
return false;
}
if (m_checker_functions.m_valid_pointer_check)
{
ValidPointerChecker vpc(M, m_checker_functions);
if (!vpc.Inspect(*function))
return false;
if (!vpc.Instrument())
return false;
}
if (m_checker_functions.m_objc_object_check)
{
ObjcObjectChecker ooc(M, m_checker_functions);
if (!ooc.Inspect(*function))
return false;
if (!ooc.Instrument())
return false;
}
if (log && log->GetVerbose())
{
std::string s;
raw_string_ostream oss(s);
M.print(oss, nullptr);
oss.flush();
log->Printf ("Module after dynamic checks: \n%s", s.c_str());
}
return true;
}
bool DeclareAssumePass::runOnModule(llvm::Module &M){
bool modified_M = false;
CheckModule::check_assume(&M);
llvm::Function *F_assume = M.getFunction("__VERIFIER_assume");
if(!F_assume){
llvm::FunctionType *assumeTy;
{
llvm::Type *voidTy = llvm::Type::getVoidTy(M.getContext());
llvm::Type *i1Ty = llvm::Type::getInt1Ty(M.getContext());
assumeTy = llvm::FunctionType::get(voidTy,{i1Ty},false);
}
llvm::AttributeSet assumeAttrs =
llvm::AttributeSet::get(M.getContext(),llvm::AttributeSet::FunctionIndex,
std::vector<llvm::Attribute::AttrKind>({llvm::Attribute::NoUnwind}));
F_assume = llvm::dyn_cast<llvm::Function>(M.getOrInsertFunction("__VERIFIER_assume",assumeTy,assumeAttrs));
assert(F_assume);
modified_M = true;
}
return modified_M;
}
bool UnsafeTypeCastingCheck::doInitialization(llvm::Module &mod) {
errs() << "initialization... \n";
for (Module::global_iterator git = mod.global_begin() ;
git != mod.global_end() ;
git++) {
GlobalValue *gv = dyn_cast<GlobalValue>(git);
string gv_name = gv->getName().str();
if (gv_name.compare("blockDim") == 0 ||
gv_name.compare("gridDim") == 0 ||
gv_name.compare("blockIdx") == 0 ||
gv_name.compare("threadIdx") == 0) {
setPointedType(gv, UINT_UT);
}
}
// get utcc_assert function call (assertion)
code_modified = false;
assert_func = mod.getFunction("utcc_assert");
assert(assert_func != NULL);
return false;
}
void Prepare::deleteAsmBodies(llvm::Module &M) {
static const char *toDelete[] = {
"atomic_inc", "atomic_dec", "atomic_add", "atomic_sub",
"atomic_dec_and_test", "atomic_add_return",
"atomic64_inc", "atomic64_dec", "atomic64_add", "atomic64_sub",
"local_inc", "local_dec",
"__fswab16", "__fswab32", "__fswab64",
"__xchg", "__cmpxchg",
"__set_bit", "__clear_bit", "set_bit", "clear_bit",
"variable_test_bit",
"__test_and_set_bit", "__test_and_clear_bit",
"test_and_set_bit", "test_and_clear_bit",
"__fls", "fls", "__ffs", "ffs", "ffz",
"inb", "inw", "inl",
"insb", "insw", "insl",
"inb_p", "inw_p", "inl_p",
"readb", "readw", "readl", "readq",
"__readb", "__readw", "__readl", "__readq",
"___arch__swab32", "___arch__swab64" // generates false positives in stats
};
static const char *_makeNop[] = {
"pagefault_disable",
"__raw_local_save_flags", "raw_local_irq_restore",
"raw_local_irq_enable", "raw_local_irq_disable",
"__raw_spin_is_contended",
"local_bh_enable", "local_bh_disable",
"schedule", "schedule_timeout", "schedule_timeout_interruptible",
"schedule_timeout_uninterruptible",
"preempt_schedule",
"msleep", "msleep_interruptible", "__udelay", "__const_udelay",
"printk_ratelimit", "warn_slowpath", "warn_on_slowpath", "dump_stack",
"printk", "vprintk", "snd_verbose_printk",
"rep_nop",
"outb", "outw", "outl",
"outsb", "outsw", "outsl",
"outb_p", "outw_p", "outl_p",
"writeb", "writew", "writel", "writeq",
"__writeb", "__writew", "__writel", "__writeq",
"mod_timer", "__mod_timer", "del_timer", "del_timer_sync",
"complete", "wait_for_completion",
"interruptible_sleep_on",
"add_wait_queue", "remove_wait_queue", "prepare_to_wait", "finish_wait",
"__tasklet_schedule",
"queue_work", "schedule_work", "flush_scheduled_work",
"schedule_delayed_work",
"__wake_up", "wake_up_process", "wake_up_state", "kill_fasync"
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(toDelete); i++) {
Function *F = M.getFunction(toDelete[i]);
if (F)
F->deleteBody();
}
for (i = 0; i < ARRAY_SIZE(_makeNop); i++) {
Function *F = M.getFunction(_makeNop[i]);
if (F)
makeNop(F);
}
}
bool swift::immediate::IRGenImportedModules(
CompilerInstance &CI,
llvm::Module &Module,
llvm::SmallPtrSet<swift::Module *, 8> &ImportedModules,
SmallVectorImpl<llvm::Function*> &InitFns,
IRGenOptions &IRGenOpts,
const SILOptions &SILOpts) {
swift::Module *M = CI.getMainModule();
// Perform autolinking.
SmallVector<LinkLibrary, 4> AllLinkLibraries(IRGenOpts.LinkLibraries);
auto addLinkLibrary = [&](LinkLibrary linkLib) {
AllLinkLibraries.push_back(linkLib);
};
M->forAllVisibleModules({}, /*includePrivateTopLevel=*/true,
[&](Module::ImportedModule import) {
import.second->collectLinkLibraries(addLinkLibrary);
});
// Hack to handle thunks eagerly synthesized by the Clang importer.
swift::Module *prev = nullptr;
for (auto external : CI.getASTContext().ExternalDefinitions) {
swift::Module *next = external->getModuleContext();
if (next == prev)
continue;
next->collectLinkLibraries(addLinkLibrary);
prev = next;
}
tryLoadLibraries(AllLinkLibraries, CI.getASTContext().SearchPathOpts,
CI.getDiags());
ImportedModules.insert(M);
if (!CI.hasSourceImport())
return false;
// IRGen the modules this module depends on. This is only really necessary
// for imported source, but that's a very convenient thing to do in -i mode.
// FIXME: Crawling all loaded modules is a hack.
// FIXME: And re-doing SILGen, SIL-linking, SIL diagnostics, and IRGen is
// expensive, because it's not properly being limited to new things right now.
bool hadError = false;
for (auto &entry : CI.getASTContext().LoadedModules) {
swift::Module *import = entry.second;
if (!ImportedModules.insert(import).second)
continue;
std::unique_ptr<SILModule> SILMod = performSILGeneration(import,
CI.getSILOptions());
performSILLinking(SILMod.get());
if (runSILDiagnosticPasses(*SILMod)) {
hadError = true;
break;
}
// FIXME: We shouldn't need to use the global context here, but
// something is persisting across calls to performIRGeneration.
auto SubModule = performIRGeneration(IRGenOpts, import, SILMod.get(),
import->getName().str(),
llvm::getGlobalContext());
if (CI.getASTContext().hadError()) {
hadError = true;
break;
}
if (!linkLLVMModules(&Module, std::move(SubModule)
// TODO: reactivate the linker mode if it is
// supported in llvm again. Otherwise remove the
// commented code completely.
/*, llvm::Linker::DestroySource */)) {
hadError = true;
break;
}
// FIXME: This is an ugly hack; need to figure out how this should
// actually work.
SmallVector<char, 20> NameBuf;
StringRef InitFnName = (import->getName().str() + ".init").toStringRef(NameBuf);
llvm::Function *InitFn = Module.getFunction(InitFnName);
if (InitFn)
InitFns.push_back(InitFn);
}
return hadError;
}
void Simulator::Simulate()
{
llvm::SMDiagnostic error;
//std::unique_ptr<llvm::Module> M = llvm::ParseIRFile("Behavior.bc", error, context);
//MyModule = M.get();
MyModule = llvm::ParseIRFile("Behavior.bc", error, context);
string err_str;
/*
OwningPtr<MemoryBuffer> result;
MemoryBuffer *mb;
llvm::error_code ec = MemoryBuffer::getFile("Behavior.bc", result);
mb = result.take();
err_str = ec.message();
if (!mb) {
error() <<"Cannot open \"" <<bitcode_file() <<"\": " <<err_str <<endl;
exit(1);
}
MyModule = llvm::ParseBitcodeFile(mb,context,&err_str);
if (!MyModule) {
error() <<"Failed to load module from bitcode file: " <<err_str <<endl;
exit(1);
}
delete mb;
*/
/*
for (llvm::Module::iterator f = MyModule->begin(), ef = MyModule->end(); f!=ef; ++f)
{
f->addFnAttr(Attributes::AlwaysInline);
}
*/
for (int32_t i = 0; i < (int32_t)OPCODE::INVALID; i++) {
OPCODE op = (OPCODE) i;
llvm::Function *func = MyModule->getFunction(GetFuncName(op));
func->addFnAttr(llvm::Attribute::AlwaysInline);
OpFunctionMap[op] = func;
}
test_type = MyModule->getFunction("test")->getFunctionType();
std::string ErrStr;
passManager = new llvm::PassManager();
passManager->add(llvm::createAlwaysInlinerPass());
fPassManager = new llvm::FunctionPassManager(MyModule);
//fPassManager->add(new DataLayout(*EE->getDataLayout()));
//fPassManager->add(new DataLayout(*EE->getDataLayout()));
fPassManager->add(llvm::createGVNPass());
fPassManager->add(llvm::createInstructionCombiningPass());
fPassManager->add(llvm::createCFGSimplificationPass());
fPassManager->add(llvm::createDeadStoreEliminationPass());
/*
llvm::EngineBuilder builder(MyModule);
builder.setErrorStr(&ErrStr);
builder.setEngineKind(llvm::EngineKind::JIT);
builder.setOptLevel(llvm::CodeGenOpt::Default); // None/Less/Default/Aggressive
//llvm::TargetOptions options;
//options.JITExceptionHandling = 1;
//builder.setTargetOptions(options);
EE = builder.create();
*/
//StringRef MCPU = llvm::sys::getHostCPUName()
EE = llvm::EngineBuilder(MyModule).create();
/*
EE =
llvm::EngineBuilder(std::move(M))
.setErrorStr(&ErrStr)
.setMCJITMemoryManager(llvm::make_unique<llvm::SectionMemoryManager>())
.create();
*/
/*
EE = llvm::EngineBuilder(M)
.setErrorStr(&ErrStr)
.setMCJITMemoryManager(llvm::SectionMemoryManager())
.create();
EE = llvm::EngineBuilder(std::move(M)).setErrorStr(&ErrStr).create();
*/
if (!EE) {
fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
exit(1);
}
EE->DisableLazyCompilation(true);
/*
//atexit(llvm_shutdown); // Call llvm_shutdown() on exit.
//llvm::EngineBuilder builder(MyModule);
llvm::EngineBuilder builder(std::move(M));
//llvm::EngineBuilder builder(MyModule);
builder.setErrorStr(&err_str);
builder.setEngineKind(llvm::EngineKind::JIT);
builder.setOptLevel(llvm::CodeGenOpt::Default); // None/Less/Default/Aggressive
//TargetOptions options;
//options.JITExceptionHandling = 1;
//builder.setTargetOptions(options);
EE = builder.create();
if (!EE) {
std::cout <<"failed to create execution engine: " <<err_str <<"\n";
exit(1);
}
*/
/*
//MyModule->dump();
EE = llvm::EngineBuilder(std::move(M)).create();
*/
//string ErrStr;
//EE = llvm::EngineBuilder(std::move(M)).setErrorStr(&ErrStr).setMCPU("i386").create();
//context = llvm::getGlobalContext();
int32_t index = 0;
Blocks = new HostBlock[1000];
int32_t block_index = 0;
while(index < total_inst) {
Blocks[block_index].pc = index;
ostringstream f_name;
f_name << "func";
f_name << block_index;
//string f_name = string("func");// + string(index);
/*
llvm::Function *func =
llvm::cast<llvm::Function>(MyModule->getOrInsertFunction(f_name.str(),
llvm::Type::getVoidTy(context), (llvm::Type *)0));
*/
// Make the function type: double(double,double) etc.
//std::vector<Type*> Doubles(Args.size(),
// Type::getDoubleTy(getGlobalContext()));
llvm::FunctionType *FT = llvm::FunctionType::get(llvm::Type::getVoidTy(context), false);
llvm::Function *func = llvm::Function::Create(FT,
llvm::Function::ExternalLinkage,
f_name.str(),
MyModule);
//Function *F = Function::Create(FT, Function::ExternalLinkage, FnName, M);
// Add a basic block to the function. As before, it automatically inserts
// because of the last argument.
llvm::BasicBlock *BB = llvm::BasicBlock::Create(context, "EntryBlock", func);
// Create a basic block builder with default parameters. The builder will
// automatically append instructions to the basic block `BB'.
IRB.SetInsertPoint(BB);
llvm::Function *sim_func;
CInst *inst;
int b_size = 0;
do {
inst = &instructions[index];
llvm::Value *dst = IRB.getInt32(inst->dst_reg);
llvm::Value *src0 = IRB.getInt32(inst->src0_reg);
llvm::Value *src1 = IRB.getInt32(inst->src1_reg);
sim_func = OpFunctionMap[inst->opcode];
llvm::Value *oprnds[] = {dst, src0, src1};
llvm::ArrayRef <llvm::Value *> ref(oprnds, 3);
IRB.CreateCall(sim_func, ref);
index++;
b_size++;
//cout << "Index " << index << endl;
//} while(b_size < 10 || inst->opcode != OPCODE::JMP);
} while(b_size < 10 && index < total_inst);
IRB.CreateRetVoid();
passManager->run(*MyModule);
fPassManager->run(*func);
EE->finalizeObject();
//std::vector<llvm::GenericValue> noargs;
//std::cout << "calling " << f_name.str() << endl;
//EE->runFunction(func, noargs);
//Blocks[block_index].func_ptr = reinterpret_cast<HostFunction>(EE->getPointerToFunction(func));
Blocks[block_index].func_ptr = (void *)(EE->getPointerToFunction(func));
//Blocks[block_index].func_ptr = reinterpret_cast<decltype(HostFunction())>(EE->getPointerToNamedFunction(f_name.str()));
//(Blocks[block_index].func_ptr)();
block_index++;
//cout << "BlockIndex " << block_index << endl;
}
total_blocks = block_index;
MyModule->dump();
/*
cout << "calling add32" << endl;
void (*add32)(int32_t, int32_t, int32_t) =
reinterpret_cast<void (*)(int32_t, int32_t, int32_t)>(EE->getFunctionAddress("add32"));
add32(0, 2, 3);
*/
/*
void (*func0)() =
reinterpret_cast<void (*)()>(EE->getFunctionAddress("func1"));
func0();
*/
/*
struct timeval tp;
gettimeofday(&tp, NULL);
long int start = tp.tv_sec * 1000 + tp.tv_usec / 1000;
for (int32_t i = 0; i < 100; i++) {
for (int32_t j = 0 ; j < total_blocks; j++) {
((HostFunction)(Blocks[j].func_ptr))();
}
}
gettimeofday(&tp, NULL);
long int end = tp.tv_sec * 1000 + tp.tv_usec / 1000;
cout << "Time = " << end - start << endl;
*/
}