AddressSanitizer.cpp File Reference

#include "llvm/Transforms/Instrumentation/AddressSanitizer.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/MemoryBuiltins.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/IR/Argument.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CallSite.h"
#include "llvm/IR/Comdat.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/InstVisitor.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/Value.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Instrumentation.h"
#include "llvm/Transforms/Utils/ASanStackFrameLayout.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"
#include "llvm/Transforms/Utils/PromoteMemToReg.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <iomanip>
#include <limits>
#include <memory>
#include <sstream>
#include <string>
#include <tuple>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "asan"

Functions
	STATISTIC (NumInstrumentedReads, "Number of instrumented reads")
	STATISTIC (NumInstrumentedWrites, "Number of instrumented writes")
	STATISTIC (NumOptimizedAccessesToGlobalVar, "Number of optimized accesses to global vars")
	STATISTIC (NumOptimizedAccessesToStackVar, "Number of optimized accesses to stack vars")
static ShadowMapping	getShadowMapping (Triple &TargetTriple, int LongSize, bool IsKasan)
static size_t	RedzoneSizeForScale (int MappingScale)
static uint64_t	GetCtorAndDtorPriority (Triple &TargetTriple)
INITIALIZE_PASS(ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass	INITIALIZE_PASS_BEGIN (AddressSanitizerLegacyPass, "asan", "AddressSanitizer: detects use-after-free and out-of-bounds bugs.", false, false) INITIALIZE_PASS_END(AddressSanitizerLegacyPass
	INITIALIZE_PASS (ModuleAddressSanitizerLegacyPass, "asan-module", "AddressSanitizer: detects use-after-free and out-of-bounds bugs." "ModulePass", false, false) ModulePass *llvm
static size_t	TypeSizeToSizeIndex (uint32_t TypeSize)
static GlobalVariable *	createPrivateGlobalForSourceLoc (Module &M, LocationMetadata MD)
	Create a global describing a source location. More...
static bool	GlobalWasGeneratedByCompiler (GlobalVariable *G)
	Check if G has been created by a trusted compiler pass. More...
static bool	isPointerOperand (Value *V)
static bool	isInterestingPointerComparison (Instruction *I)
static bool	isInterestingPointerSubtraction (Instruction *I)
static void	doInstrumentAddress (AddressSanitizer *Pass, Instruction *I, Instruction *InsertBefore, Value *Addr, unsigned Alignment, unsigned Granularity, uint32_t TypeSize, bool IsWrite, Value *SizeArgument, bool UseCalls, uint32_t Exp)
static void	instrumentMaskedLoadOrStore (AddressSanitizer *Pass, const DataLayout &DL, Type *IntptrTy, Value *Mask, Instruction *I, Value *Addr, unsigned Alignment, unsigned Granularity, uint32_t TypeSize, bool IsWrite, Value *SizeArgument, bool UseCalls, uint32_t Exp)
static int	StackMallocSizeClass (uint64_t LocalStackSize)

Variables
static const uint64_t	kDefaultShadowScale = 3
static const uint64_t	kDefaultShadowOffset32 = 1ULL << 29
static const uint64_t	kDefaultShadowOffset64 = 1ULL << 44
static const uint64_t	kDynamicShadowSentinel
static const uint64_t	kSmallX86_64ShadowOffsetBase = 0x7FFFFFFF
static const uint64_t	kSmallX86_64ShadowOffsetAlignMask = ~0xFFFULL
static const uint64_t	kLinuxKasan_ShadowOffset64 = 0xdffffc0000000000
static const uint64_t	kPPC64_ShadowOffset64 = 1ULL << 44
static const uint64_t	kSystemZ_ShadowOffset64 = 1ULL << 52
static const uint64_t	kMIPS32_ShadowOffset32 = 0x0aaa0000
static const uint64_t	kMIPS64_ShadowOffset64 = 1ULL << 37
static const uint64_t	kAArch64_ShadowOffset64 = 1ULL << 36
static const uint64_t	kFreeBSD_ShadowOffset32 = 1ULL << 30
static const uint64_t	kFreeBSD_ShadowOffset64 = 1ULL << 46
static const uint64_t	kNetBSD_ShadowOffset32 = 1ULL << 30
static const uint64_t	kNetBSD_ShadowOffset64 = 1ULL << 46
static const uint64_t	kNetBSDKasan_ShadowOffset64 = 0xdfff900000000000
static const uint64_t	kPS4CPU_ShadowOffset64 = 1ULL << 40
static const uint64_t	kWindowsShadowOffset32 = 3ULL << 28
static const uint64_t	kEmscriptenShadowOffset = 0
static const uint64_t	kMyriadShadowScale = 5
static const uint64_t	kMyriadMemoryOffset32 = 0x80000000ULL
static const uint64_t	kMyriadMemorySize32 = 0x20000000ULL
static const uint64_t	kMyriadTagShift = 29
static const uint64_t	kMyriadDDRTag = 4
static const uint64_t	kMyriadCacheBitMask32 = 0x40000000ULL
static const uint64_t	kWindowsShadowOffset64 = kDynamicShadowSentinel
static const size_t	kMinStackMallocSize = 1 << 6
static const size_t	kMaxStackMallocSize = 1 << 16
static const uintptr_t	kCurrentStackFrameMagic = 0x41B58AB3
static const uintptr_t	kRetiredStackFrameMagic = 0x45E0360E
static const char *const	kAsanModuleCtorName = "asan.module_ctor"
static const char *const	kAsanModuleDtorName = "asan.module_dtor"
static const uint64_t	kAsanCtorAndDtorPriority = 1
static const uint64_t	kAsanEmscriptenCtorAndDtorPriority = 50
static const char *const	kAsanReportErrorTemplate = "__asan_report_"
static const char *const	kAsanRegisterGlobalsName = "__asan_register_globals"
static const char *const	kAsanUnregisterGlobalsName
static const char *const	kAsanRegisterImageGlobalsName
static const char *const	kAsanUnregisterImageGlobalsName
static const char *const	kAsanRegisterElfGlobalsName
static const char *const	kAsanUnregisterElfGlobalsName
static const char *const	kAsanPoisonGlobalsName = "__asan_before_dynamic_init"
static const char *const	kAsanUnpoisonGlobalsName = "__asan_after_dynamic_init"
static const char *const	kAsanInitName = "__asan_init"
static const char *const	kAsanVersionCheckNamePrefix
static const char *const	kAsanPtrCmp = "__sanitizer_ptr_cmp"
static const char *const	kAsanPtrSub = "__sanitizer_ptr_sub"
static const char *const	kAsanHandleNoReturnName = "__asan_handle_no_return"
static const int	kMaxAsanStackMallocSizeClass = 10
static const char *const	kAsanStackMallocNameTemplate = "__asan_stack_malloc_"
static const char *const	kAsanStackFreeNameTemplate = "__asan_stack_free_"
static const char *const	kAsanGenPrefix = "___asan_gen_"
static const char *const	kODRGenPrefix = "__odr_asan_gen_"
static const char *const	kSanCovGenPrefix = "__sancov_gen_"
static const char *const	kAsanSetShadowPrefix = "__asan_set_shadow_"
static const char *const	kAsanPoisonStackMemoryName
static const char *const	kAsanUnpoisonStackMemoryName
static const char *const	kAsanGlobalsRegisteredFlagName
static const char *const	kAsanOptionDetectUseAfterReturn
static const char *const	kAsanShadowMemoryDynamicAddress
static const char *const	kAsanAllocaPoison = "__asan_alloca_poison"
static const char *const	kAsanAllocasUnpoison = "__asan_allocas_unpoison"
static const size_t	kNumberOfAccessSizes = 5
static const unsigned	kAllocaRzSize = 32
static cl::opt< bool >	ClEnableKasan ("asan-kernel", cl::desc("Enable KernelAddressSanitizer instrumentation"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClRecover ("asan-recover", cl::desc("Enable recovery mode (continue-after-error)."), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClInsertVersionCheck ("asan-guard-against-version-mismatch", cl::desc("Guard against compiler/runtime version mismatch."), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInstrumentReads ("asan-instrument-reads", cl::desc("instrument read instructions"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInstrumentWrites ("asan-instrument-writes", cl::desc("instrument write instructions"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInstrumentAtomics ("asan-instrument-atomics", cl::desc("instrument atomic instructions (rmw, cmpxchg)"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClAlwaysSlowPath ("asan-always-slow-path", cl::desc("use instrumentation with slow path for all accesses"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClForceDynamicShadow ("asan-force-dynamic-shadow", cl::desc("Load shadow address into a local variable for each function"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClWithIfunc ("asan-with-ifunc", cl::desc("Access dynamic shadow through an ifunc global on " "platforms that support this"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClWithIfuncSuppressRemat ("asan-with-ifunc-suppress-remat", cl::desc("Suppress rematerialization of dynamic shadow address by passing " "it through inline asm in prologue."), cl::Hidden, cl::init(true))
static cl::opt< int >	ClMaxInsnsToInstrumentPerBB ("asan-max-ins-per-bb", cl::init(10000), cl::desc("maximal number of instructions to instrument in any given BB"), cl::Hidden)
static cl::opt< bool >	ClStack ("asan-stack", cl::desc("Handle stack memory"), cl::Hidden, cl::init(true))
static cl::opt< uint32_t >	ClMaxInlinePoisoningSize ("asan-max-inline-poisoning-size", cl::desc("Inline shadow poisoning for blocks up to the given size in bytes."), cl::Hidden, cl::init(64))
static cl::opt< bool >	ClUseAfterReturn ("asan-use-after-return", cl::desc("Check stack-use-after-return"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClRedzoneByvalArgs ("asan-redzone-byval-args", cl::desc("Create redzones for byval " "arguments (extra copy " "required)"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClUseAfterScope ("asan-use-after-scope", cl::desc("Check stack-use-after-scope"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClGlobals ("asan-globals", cl::desc("Handle global objects"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInitializers ("asan-initialization-order", cl::desc("Handle C++ initializer order"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInvalidPointerPairs ("asan-detect-invalid-pointer-pair", cl::desc("Instrument <, <=, >, >=, - with pointer operands"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClInvalidPointerCmp ("asan-detect-invalid-pointer-cmp", cl::desc("Instrument <, <=, >, >= with pointer operands"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClInvalidPointerSub ("asan-detect-invalid-pointer-sub", cl::desc("Instrument - operations with pointer operands"), cl::Hidden, cl::init(false))
static cl::opt< unsigned >	ClRealignStack ("asan-realign-stack", cl::desc("Realign stack to the value of this flag (power of two)"), cl::Hidden, cl::init(32))
static cl::opt< int >	ClInstrumentationWithCallsThreshold ("asan-instrumentation-with-call-threshold", cl::desc("If the function being instrumented contains more than " "this number of memory accesses, use callbacks instead of " "inline checks (-1 means never use callbacks)."), cl::Hidden, cl::init(7000))
static cl::opt< std::string >	ClMemoryAccessCallbackPrefix ("asan-memory-access-callback-prefix", cl::desc("Prefix for memory access callbacks"), cl::Hidden, cl::init("__asan_"))
static cl::opt< bool >	ClInstrumentDynamicAllocas ("asan-instrument-dynamic-allocas", cl::desc("instrument dynamic allocas"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClSkipPromotableAllocas ("asan-skip-promotable-allocas", cl::desc("Do not instrument promotable allocas"), cl::Hidden, cl::init(true))
static cl::opt< int >	ClMappingScale ("asan-mapping-scale", cl::desc("scale of asan shadow mapping"), cl::Hidden, cl::init(0))
static cl::opt< uint64_t >	ClMappingOffset ("asan-mapping-offset", cl::desc("offset of asan shadow mapping [EXPERIMENTAL]"), cl::Hidden, cl::init(0))
static cl::opt< bool >	ClOpt ("asan-opt", cl::desc("Optimize instrumentation"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClOptSameTemp ("asan-opt-same-temp", cl::desc("Instrument the same temp just once"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClOptGlobals ("asan-opt-globals", cl::desc("Don't instrument scalar globals"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClOptStack ("asan-opt-stack", cl::desc("Don't instrument scalar stack variables"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClDynamicAllocaStack ("asan-stack-dynamic-alloca", cl::desc("Use dynamic alloca to represent stack variables"), cl::Hidden, cl::init(true))
static cl::opt< uint32_t >	ClForceExperiment ("asan-force-experiment", cl::desc("Force optimization experiment (for testing)"), cl::Hidden, cl::init(0))
static cl::opt< bool >	ClUsePrivateAlias ("asan-use-private-alias", cl::desc("Use private aliases for global variables"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClUseOdrIndicator ("asan-use-odr-indicator", cl::desc("Use odr indicators to improve ODR reporting"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClUseGlobalsGC ("asan-globals-live-support", cl::desc("Use linker features to support dead " "code stripping of globals"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClWithComdat ("asan-with-comdat", cl::desc("Place ASan constructors in comdat sections"), cl::Hidden, cl::init(true))
static cl::opt< int >	ClDebug ("asan-debug", cl::desc("debug"), cl::Hidden, cl::init(0))
static cl::opt< int >	ClDebugStack ("asan-debug-stack", cl::desc("debug stack"), cl::Hidden, cl::init(0))
static cl::opt< std::string >	ClDebugFunc ("asan-debug-func", cl::Hidden, cl::desc("Debug func"))
static cl::opt< int >	ClDebugMin ("asan-debug-min", cl::desc("Debug min inst"), cl::Hidden, cl::init(-1))
static cl::opt< int >	ClDebugMax ("asan-debug-max", cl::desc("Debug max inst"), cl::Hidden, cl::init(-1))
INITIALIZE_PASS(ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass	asan
INITIALIZE_PASS(ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass	AddressSanitizer
INITIALIZE_PASS(ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "asan"

Definition at line 90 of file AddressSanitizer.cpp.

Function Documentation

createPrivateGlobalForSourceLoc()

static GlobalVariable* createPrivateGlobalForSourceLoc ( Module &  M, LocationMetadata  MD  )

static

Create a global describing a source location.

Definition at line 1250 of file AddressSanitizer.cpp.

References llvm::LocationMetadata::ColumnNo, llvm::createPrivateGlobalForString(), llvm::LocationMetadata::Filename, llvm::ConstantInt::get(), llvm::ConstantStruct::getAnon(), llvm::Module::getContext(), llvm::Type::getInt32Ty(), llvm::GlobalValue::Global, kAsanGenPrefix, llvm::LocationMetadata::LineNo, llvm::GlobalValue::PrivateLinkage, and llvm::GlobalValue::setUnnamedAddr().

Referenced by instrumentMaskedLoadOrStore().

doInstrumentAddress()

static void doInstrumentAddress ( AddressSanitizer *  Pass, Instruction *  I, Instruction *  InsertBefore, Value *  Addr, unsigned  Alignment, unsigned  Granularity, uint32_t  TypeSize, bool  IsWrite, Value *  SizeArgument, bool  UseCalls, uint32_t  Exp  )

static

Definition at line 1491 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

GetCtorAndDtorPriority()

static uint64_t GetCtorAndDtorPriority ( Triple &  TargetTriple )

static

Definition at line 540 of file AddressSanitizer.cpp.

References llvm::AnalysisUsage::addRequired(), AddressSanitizer, assert(), C, ClDebugStack, llvm::SmallVectorImpl< T >::clear(), ClEnableKasan, ClInstrumentDynamicAllocas, ClRecover, ClRedzoneByvalArgs, ClStack, ClUseAfterScope, ClUseGlobalsGC, ClUseOdrIndicator, ClUsePrivateAlias, ClWithComdat, llvm::CallInst::Create(), llvm::IRBuilder< T, Inserter >::CreateAdd(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateLoad(), llvm::IRBuilder< T, Inserter >::CreatePtrToInt(), llvm::dbgs(), llvm::depth_first(), llvm::dyn_cast(), llvm::SmallVectorBase::empty(), F(), llvm::findAllocaForValue(), G, llvm::PointerType::get(), llvm::AllocaInst::getAlignment(), getAllocaSizeInBytes(), llvm::AllocaInst::getAllocatedType(), llvm::CallBase::getArgOperand(), llvm::AllocaInst::getArraySize(), llvm::Module::getContext(), llvm::Module::getDataLayout(), llvm::Intrinsic::getDeclaration(), llvm::Function::getEntryBlock(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, CallBrTy, IterTy >::getInstruction(), llvm::Type::getIntNTy(), llvm::IntrinsicInst::getIntrinsicID(), llvm::Instruction::getModule(), llvm::GlobalValue::getParent(), llvm::PassRegistry::getPassRegistry(), llvm::DataLayout::getPointerSizeInBits(), getShadowMapping(), llvm::Module::getTargetTriple(), llvm::DataLayout::getTypeAllocSize(), llvm::ConstantInt::getZExtValue(), I, llvm::initializeAddressSanitizerLegacyPassPass(), llvm::initializeASanGlobalsMetadataWrapperPassPass(), llvm::initializeModuleAddressSanitizerLegacyPassPass(), llvm::AllocaInst::isArrayAllocation(), llvm::Instruction::isLifetimeStartOrEnd(), llvm::Triple::isOSEmscripten(), llvm::AllocaInst::isStaticAlloca(), llvm::ConstantInt::isValueValidForType(), kAsanCtorAndDtorPriority, kAsanEmscriptenCtorAndDtorPriority, kMaxAsanStackMallocSizeClass, kNumberOfAccessSizes, LLVM_DEBUG, llvm::max(), MI, Pass, llvm::SmallVectorTemplateBase< T >::push_back(), RedzoneSizeForScale(), llvm::MipsISD::Ret, runOnFunction(), llvm::AnalysisUsage::setPreservesAll(), and Size.

Referenced by instrumentMaskedLoadOrStore().

getShadowMapping()

static ShadowMapping getShadowMapping ( Triple &  TargetTriple, int  LongSize, bool  IsKasan  )

static

Definition at line 425 of file AddressSanitizer.cpp.

References llvm::Triple::aarch64, ClForceDynamicShadow, ClMappingOffset, ClMappingScale, ClWithIfunc, llvm::Triple::getArch(), llvm::Triple::getVendor(), llvm::Triple::isAndroid(), llvm::Triple::isAndroidVersionLT(), llvm::Triple::isARM(), llvm::Triple::isiOS(), llvm::Triple::isMIPS32(), llvm::Triple::isMIPS64(), llvm::Triple::isOSEmscripten(), llvm::Triple::isOSFreeBSD(), llvm::Triple::isOSFuchsia(), llvm::Triple::isOSLinux(), llvm::Triple::isOSNetBSD(), llvm::Triple::isOSWindows(), llvm::Triple::isPS4CPU(), llvm::Triple::isThumb(), llvm::Triple::isWatchOS(), kAArch64_ShadowOffset64, kDefaultShadowOffset32, kDefaultShadowOffset64, kDefaultShadowScale, kDynamicShadowSentinel, kEmscriptenShadowOffset, kFreeBSD_ShadowOffset32, kFreeBSD_ShadowOffset64, kLinuxKasan_ShadowOffset64, kMIPS32_ShadowOffset32, kMIPS64_ShadowOffset64, kMyriadMemoryOffset32, kMyriadMemorySize32, kMyriadShadowScale, kNetBSD_ShadowOffset32, kNetBSD_ShadowOffset64, kNetBSDKasan_ShadowOffset64, kPPC64_ShadowOffset64, kPS4CPU_ShadowOffset64, kSmallX86_64ShadowOffsetAlignMask, kSmallX86_64ShadowOffsetBase, kSystemZ_ShadowOffset64, kWindowsShadowOffset32, kWindowsShadowOffset64, llvm::Triple::Myriad, llvm::Triple::ppc64, llvm::Triple::ppc64le, llvm::Triple::systemz, and llvm::Triple::x86_64.

Referenced by GetCtorAndDtorPriority().

GlobalWasGeneratedByCompiler()

static bool GlobalWasGeneratedByCompiler ( GlobalVariable *  G )

static

Check if G has been created by a trusted compiler pass.

Definition at line 1266 of file AddressSanitizer.cpp.

References ClInstrumentAtomics, ClInstrumentReads, ClInstrumentWrites, ClSkipPromotableAllocas, llvm::IRBuilder< T, Inserter >::CreateAdd(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateIntCast(), llvm::IRBuilder< T, Inserter >::CreateLShr(), llvm::IRBuilder< T, Inserter >::CreateOr(), llvm::IRBuilder< T, Inserter >::CreatePointerCast(), llvm::dyn_cast(), llvm::Instruction::eraseFromParent(), F(), llvm::ConstantInt::get(), getAllocaSizeInBytes(), llvm::AllocaInst::getAllocatedType(), llvm::Module::getDataLayout(), llvm::IRBuilderBase::getInt32Ty(), llvm::IRBuilderBase::getInt8PtrTy(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::User::getOperand(), llvm::Type::getPointerAddressSpace(), llvm::Type::getScalarType(), llvm::Value::getType(), llvm::DataLayout::getTypeStoreSizeInBits(), llvm::Instruction::hasMetadata(), I, llvm::isAllocaPromotable(), llvm::Type::isSized(), llvm::AllocaInst::isStaticAlloca(), llvm::AllocaInst::isSwiftError(), llvm::Value::isSwiftError(), llvm::AllocaInst::isUsedWithInAlloca(), MI, SI, and llvm::StringRef::startswith().

Referenced by instrumentMaskedLoadOrStore().

INITIALIZE_PASS()

INITIALIZE_PASS	(	ModuleAddressSanitizerLegacyPass	,
		"asan-module"	,
		"AddressSanitizer: detects use-after-free and out-of-bounds bugs." "ModulePass"	,
		false	,
		false
	)

Definition at line 1230 of file AddressSanitizer.cpp.

References assert().

Referenced by llvm::ModuleAddressSanitizerPass::run().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS (ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass INITIALIZE_PASS_BEGIN	(	AddressSanitizerLegacyPass	,
		"asan"	,
		"AddressSanitizer: detects use-after-free and out-of-bounds bugs."	,
		false	,
		false
	)

Referenced by llvm::ModuleAddressSanitizerPass::run().

instrumentMaskedLoadOrStore()

static void instrumentMaskedLoadOrStore ( AddressSanitizer *  Pass, const DataLayout &  DL, Type *  IntptrTy, Value *  Mask, Instruction *  I, Value *  Addr, unsigned  Alignment, unsigned  Granularity, uint32_t  TypeSize, bool  IsWrite, Value *  SizeArgument, bool  UseCalls, uint32_t  Exp  )

static

Definition at line 1508 of file AddressSanitizer.cpp.

References llvm::GlobalVariable::addDebugInfo(), llvm::AMDGPU::HSAMD::Kernel::Arg::Key::Align, llvm::Comdat::Any, llvm::appendToCompilerUsed(), llvm::appendToGlobalCtors(), llvm::appendToGlobalDtors(), Arg, llvm::CallBase::arg_operands(), llvm::HexStyle::Asm, assert(), llvm::assumeAligned(), llvm::GlobalValue::AvailableExternallyLinkage, llvm::BasicBlock::begin(), C, ClAlwaysSlowPath, ClDebugFunc, ClDebugMax, ClDebugMin, llvm::SmallPtrSetImplBase::clear(), ClForceExperiment, ClGlobals, ClInitializers, ClInsertVersionCheck, ClInstrumentationWithCallsThreshold, ClInvalidPointerCmp, ClInvalidPointerPairs, ClInvalidPointerSub, ClMaxInsnsToInstrumentPerBB, ClMemoryAccessCallbackPrefix, ClOpt, ClOptGlobals, ClOptSameTemp, ClOptStack, ClWithIfuncSuppressRemat, llvm::Triple::COFF, llvm::GlobalValue::CommonLinkage, llvm::StringRef::contains(), llvm::GlobalVariable::copyAttributesFrom(), llvm::SmallPtrSetImpl< PtrType >::count(), llvm::GlobalAlias::create(), llvm::BasicBlock::Create(), llvm::Function::Create(), llvm::CallInst::Create(), llvm::ReturnInst::Create(), llvm::BranchInst::Create(), llvm::IRBuilder< T, Inserter >::CreateAdd(), llvm::IRBuilder< T, Inserter >::CreateAnd(), llvm::MDBuilder::createBranchWeights(), llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreateExtractElement(), llvm::IRBuilder< T, Inserter >::CreateGEP(), llvm::IRBuilder< T, Inserter >::CreateICmpEQ(), llvm::IRBuilder< T, Inserter >::CreateICmpNE(), llvm::IRBuilder< T, Inserter >::CreateICmpSGE(), llvm::IRBuilder< T, Inserter >::CreateIntCast(), llvm::IRBuilder< T, Inserter >::CreateIntToPtr(), llvm::IRBuilder< T, Inserter >::CreateLoad(), llvm::IRBuilder< T, Inserter >::CreateLShr(), llvm::IRBuilder< T, Inserter >::CreatePointerCast(), createPrivateGlobalForSourceLoc(), llvm::createPrivateGlobalForString(), llvm::createSanitizerCtorAndInitFunctions(), llvm::dbgs(), llvm::declareSanitizerInitFunction(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, CallBrTy, IterTy >::doesNotReturn(), doInstrumentAddress(), llvm::GlobalValue::dropLLVMManglingEscape(), llvm::dyn_cast(), llvm::Triple::ELF, llvm::StringRef::empty(), llvm::Module::empty(), llvm::Comdat::ExactMatch, llvm::GlobalValue::ExternalWeakLinkage, F(), llvm::StringRef::find(), llvm::BasicBlock::front(), llvm::Function::front(), G, llvm::InlineAsm::get(), llvm::IntegerType::get(), llvm::ConstantInt::get(), llvm::FunctionType::get(), llvm::StructType::get(), llvm::ValueAsMetadata::get(), llvm::ArrayType::get(), llvm::ConstantArray::get(), llvm::ConstantStruct::get(), llvm::PointerType::get(), llvm::MDNode::get(), llvm::Constant::getAggregateElement(), llvm::GlobalObject::getAlignment(), llvm::Function::getBasicBlockList(), llvm::GlobalObject::getComdat(), llvm::Module::getContext(), GetCtorAndDtorPriority(), llvm::Module::getDataLayout(), llvm::Instruction::getDebugLoc(), llvm::GlobalValue::getDLLStorageClass(), llvm::Function::getEntryBlock(), llvm::BasicBlock::getFirstInsertionPt(), llvm::Module::getFunction(), llvm::ConstantExpr::getGetElementPtr(), llvm::Module::getGlobalVariable(), llvm::GlobalVariable::getInitializer(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, CallBrTy, IterTy >::getInstruction(), llvm::IRBuilderBase::getInt32(), llvm::IRBuilderBase::getInt32Ty(), llvm::Type::getInt32Ty(), llvm::IRBuilderBase::getInt8PtrTy(), llvm::IRBuilderBase::getInt8Ty(), llvm::IntrinsicInst::getIntrinsicID(), llvm::ConstantExpr::getIntToPtr(), llvm::GlobalValue::getLinkage(), llvm::Module::getModuleIdentifier(), llvm::Value::getName(), llvm::Constant::getNullValue(), llvm::CallBase::getNumArgOperands(), llvm::User::getOperand(), llvm::Module::getOrInsertComdat(), llvm::Module::getOrInsertFunction(), llvm::Module::getOrInsertGlobal(), llvm::BasicBlock::getParent(), llvm::GlobalValue::getParent(), llvm::ConstantExpr::getPointerCast(), llvm::DataLayout::getPointerSizeInBits(), llvm::GlobalObject::getSection(), llvm::Instruction::getSuccessor(), llvm::Module::getTargetTriple(), llvm::GlobalValue::getThreadLocalMode(), getType(), llvm::Value::getType(), llvm::DataLayout::getTypeAllocSize(), llvm::DataLayout::getTypeStoreSizeInBits(), llvm::GetUnderlyingObject(), llvm::getUniqueModuleId(), llvm::GlobalValue::getValueType(), llvm::GlobalValue::getVisibility(), llvm::Type::getVoidTy(), llvm::IRBuilderBase::getVoidTy(), llvm::Module::globals(), GlobalWasGeneratedByCompiler(), llvm::GlobalObject::hasComdat(), llvm::GlobalValue::hasExactDefinition(), llvm::Function::hasFnAttribute(), llvm::GlobalVariable::hasInitializer(), llvm::GlobalValue::hasLocalLinkage(), llvm::Value::hasName(), llvm::GlobalValue::hasPrivateLinkage(), llvm::GlobalObject::hasSection(), llvm::GlobalValue::HiddenVisibility, I, llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::GlobalValue::InternalLinkage, llvm::GlobalVariable::isConstant(), llvm::CallBase::isInlineAsm(), isInterestingPointerComparison(), isInterestingPointerSubtraction(), llvm::GlobalValue::isInterposable(), llvm::isPowerOf2_32(), llvm::Type::isSized(), llvm::AllocaInst::isStaticAlloca(), llvm::GlobalValue::isThreadLocal(), llvm::itostr(), kAsanGenPrefix, kAsanInitName, kAsanModuleCtorName, kAsanSetShadowPrefix, kDynamicShadowSentinel, kMaxAsanStackMallocSizeClass, kMyriadCacheBitMask32, kMyriadDDRTag, kMyriadTagShift, kNumberOfAccessSizes, llvm::Comdat::Largest, LLVM_DEBUG, llvm_unreachable, llvm::Triple::MachO, llvm::max(), llvm::maybeMarkSanitizerLibraryCallNoBuiltin(), llvm::Triple::Myriad, N, Name, llvm::Comdat::NoDuplicates, llvm::Align::None(), llvm::GlobalValue::None, llvm::StringRef::npos, OP, llvm::User::operands(), llvm::MCSectionMachO::ParseSectionSpecifier(), llvm::GlobalValue::PrivateLinkage, llvm::SmallVectorTemplateBase< T >::push_back(), llvm::Value::replaceAllUsesWith(), llvm::ReplaceInstWithInst(), llvm::report_fatal_error(), llvm::ObjectSizeOpts::RoundToAlign, llvm::NVPTX::PTXCvtMode::RZ, llvm::MachO::S_CSTRING_LITERALS, llvm::Comdat::SameSize, llvm::ARMBuildAttrs::Section, llvm::GlobalObject::setAlignment(), llvm::GlobalObject::setComdat(), llvm::Instruction::setDebugLoc(), llvm::IRBuilderBase::SetInsertPoint(), llvm::GlobalValue::setLinkage(), llvm::GlobalObject::setMetadata(), llvm::Value::setName(), llvm::GlobalObject::setSection(), llvm::Comdat::setSelectionKind(), llvm::GlobalValue::setUnnamedAddr(), llvm::GlobalValue::setVisibility(), Size, llvm::SmallVectorBase::size(), llvm::ArrayRef< T >::size(), llvm::SplitBlockAndInsertIfThen(), llvm::StringRef::startswith(), llvm::Tag, llvm::Value::takeName(), llvm::to_string(), TypeSizeToSizeIndex(), llvm::Triple::UnknownObjectFormat, llvm::Vector, llvm::IndexedInstrProf::Version, llvm::Triple::Wasm, and llvm::Triple::XCOFF.

isInterestingPointerComparison()

static bool isInterestingPointerComparison ( Instruction *  I )

static

Definition at line 1444 of file AddressSanitizer.cpp.

References llvm::User::getOperand(), and isPointerOperand().

Referenced by instrumentMaskedLoadOrStore().

isInterestingPointerSubtraction()

static bool isInterestingPointerSubtraction ( Instruction *  I )

static

Definition at line 1458 of file AddressSanitizer.cpp.

References llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreatePointerCast(), F(), G, llvm::User::getOperand(), llvm::GlobalVariable::hasInitializer(), I, and isPointerOperand().

Referenced by instrumentMaskedLoadOrStore().

isPointerOperand()

static bool isPointerOperand ( Value *  V )

static

Definition at line 1437 of file AddressSanitizer.cpp.

References llvm::Value::getType(), and llvm::Type::isPointerTy().

Referenced by isInterestingPointerComparison(), and isInterestingPointerSubtraction().

RedzoneSizeForScale()

static size_t RedzoneSizeForScale ( int  MappingScale )

static

Definition at line 534 of file AddressSanitizer.cpp.

References llvm::max().

Referenced by GetCtorAndDtorPriority().

StackMallocSizeClass()

static int StackMallocSizeClass ( uint64_t  LocalStackSize )

static

Definition at line 2881 of file AddressSanitizer.cpp.

References llvm::AMDGPU::HSAMD::Kernel::Arg::Key::Align, Arg, llvm::Function::args(), assert(), llvm::IRBuilder< T, Inserter >::CreateAlloca(), llvm::IRBuilderBase::CreateMemCpy(), llvm::BasicBlock::front(), llvm::Function::front(), llvm::DataLayout::getABITypeAlignment(), llvm::Module::getDataLayout(), llvm::ilist_node_with_parent< NodeTy, ParentTy, Options >::getNextNode(), llvm::GlobalValue::getParent(), llvm::DataLayout::getTypeAllocSize(), kMaxStackMallocSize, kMinStackMallocSize, llvm_unreachable, and llvm::AllocaInst::setAlignment().

STATISTIC() [1/4]

STATISTIC	(	NumInstrumentedReads	,
		"Number of instrumented reads"
	)

STATISTIC() [2/4]

STATISTIC	(	NumInstrumentedWrites	,
		"Number of instrumented writes"
	)

STATISTIC() [3/4]

STATISTIC	(	NumOptimizedAccessesToGlobalVar	,
		"Number of optimized accesses to global vars"
	)

STATISTIC() [4/4]

STATISTIC	(	NumOptimizedAccessesToStackVar	,
		"Number of optimized accesses to stack vars"
	)

TypeSizeToSizeIndex()

static size_t TypeSizeToSizeIndex ( uint32_t  TypeSize )

static

Definition at line 1243 of file AddressSanitizer.cpp.

References assert(), llvm::countTrailingZeros(), and kNumberOfAccessSizes.

Referenced by instrumentMaskedLoadOrStore().

Variable Documentation

AddressSanitizer

INITIALIZE_PASS (ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass AddressSanitizer

Definition at line 1217 of file AddressSanitizer.cpp.

Referenced by GetCtorAndDtorPriority(), and llvm::AddressSanitizerPass::run().

asan

INITIALIZE_PASS (ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass asan

Definition at line 1217 of file AddressSanitizer.cpp.

ClAlwaysSlowPath

cl::opt<bool> ClAlwaysSlowPath("asan-always-slow-path", cl::desc("use instrumentation with slow path for all accesses"), cl::Hidden, cl::init(false))

static

Referenced by instrumentMaskedLoadOrStore().

ClDebug

cl::opt<int> ClDebug("asan-debug", cl::desc("debug"), cl::Hidden, cl::init(0))

static

ClDebugFunc

cl::opt<std::string> ClDebugFunc("asan-debug-func", cl::Hidden, cl::desc("Debug func"))

static

Referenced by instrumentMaskedLoadOrStore().

ClDebugMax

cl::opt<int> ClDebugMax("asan-debug-max", cl::desc("Debug max inst"), cl::Hidden, cl::init(-1))

static

Referenced by instrumentMaskedLoadOrStore().

ClDebugMin

cl::opt<int> ClDebugMin("asan-debug-min", cl::desc("Debug min inst"), cl::Hidden, cl::init(-1))

static

Referenced by instrumentMaskedLoadOrStore().

ClDebugStack

cl::opt<int> ClDebugStack("asan-debug-stack", cl::desc("debug stack"), cl::Hidden, cl::init(0))

static

Referenced by GetCtorAndDtorPriority().

ClDynamicAllocaStack

cl::opt<bool> ClDynamicAllocaStack("asan-stack-dynamic-alloca", cl::desc("Use dynamic alloca to represent stack variables"), cl::Hidden, cl::init(true))

static

ClEnableKasan

cl::opt<bool> ClEnableKasan("asan-kernel", cl::desc("Enable KernelAddressSanitizer instrumentation"), cl::Hidden, cl::init(false))

static

Referenced by GetCtorAndDtorPriority().

ClForceDynamicShadow

cl::opt<bool> ClForceDynamicShadow("asan-force-dynamic-shadow", cl::desc("Load shadow address into a local variable for each function"), cl::Hidden, cl::init(false))

static

Referenced by getShadowMapping().

ClForceExperiment

cl::opt<uint32_t> ClForceExperiment("asan-force-experiment", cl::desc("Force optimization experiment (for testing)"), cl::Hidden, cl::init(0))

static

Referenced by instrumentMaskedLoadOrStore().

ClGlobals

cl::opt<bool> ClGlobals("asan-globals", cl::desc("Handle global objects"), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

ClInitializers

cl::opt<bool> ClInitializers("asan-initialization-order", cl::desc("Handle C++ initializer order"), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

ClInsertVersionCheck

cl::opt<bool> ClInsertVersionCheck("asan-guard-against-version-mismatch", cl::desc("Guard against compiler/runtime version mismatch."), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

ClInstrumentationWithCallsThreshold

cl::opt<int> ClInstrumentationWithCallsThreshold("asan-instrumentation-with-call-threshold", cl::desc( "If the function being instrumented contains more than " "this number of memory accesses, use callbacks instead of " "inline checks (-1 means never use callbacks)."), cl::Hidden, cl::init(7000))

static

Referenced by instrumentMaskedLoadOrStore().

ClInstrumentAtomics

cl::opt<bool> ClInstrumentAtomics("asan-instrument-atomics", cl::desc("instrument atomic instructions (rmw, cmpxchg)"), cl::Hidden, cl::init(true))

static

Referenced by GlobalWasGeneratedByCompiler().

ClInstrumentDynamicAllocas

cl::opt<bool> ClInstrumentDynamicAllocas("asan-instrument-dynamic-allocas", cl::desc("instrument dynamic allocas"), cl::Hidden, cl::init(true))

static

Referenced by GetCtorAndDtorPriority().

ClInstrumentReads

cl::opt<bool> ClInstrumentReads("asan-instrument-reads", cl::desc("instrument read instructions"), cl::Hidden, cl::init(true))

static

Referenced by GlobalWasGeneratedByCompiler().

ClInstrumentWrites

cl::opt<bool> ClInstrumentWrites("asan-instrument-writes", cl::desc("instrument write instructions"), cl::Hidden, cl::init(true))

static

Referenced by GlobalWasGeneratedByCompiler().

ClInvalidPointerCmp

cl::opt<bool> ClInvalidPointerCmp("asan-detect-invalid-pointer-cmp", cl::desc("Instrument <, <=, >, >= with pointer operands"), cl::Hidden, cl::init(false))

static

Referenced by instrumentMaskedLoadOrStore().

ClInvalidPointerPairs

cl::opt<bool> ClInvalidPointerPairs("asan-detect-invalid-pointer-pair", cl::desc("Instrument <, <=, >, >=, - with pointer operands"), cl::Hidden, cl::init(false))

static

Referenced by instrumentMaskedLoadOrStore().

ClInvalidPointerSub

cl::opt<bool> ClInvalidPointerSub("asan-detect-invalid-pointer-sub", cl::desc("Instrument - operations with pointer operands"), cl::Hidden, cl::init(false))

static

Referenced by instrumentMaskedLoadOrStore().

ClMappingOffset

cl::opt<uint64_t> ClMappingOffset("asan-mapping-offset", cl::desc("offset of asan shadow mapping [EXPERIMENTAL]"), cl::Hidden, cl::init(0))

static

Referenced by getShadowMapping().

ClMappingScale

cl::opt<int> ClMappingScale("asan-mapping-scale", cl::desc("scale of asan shadow mapping"), cl::Hidden, cl::init(0))

static

Referenced by getShadowMapping().

ClMaxInlinePoisoningSize

cl::opt<uint32_t> ClMaxInlinePoisoningSize("asan-max-inline-poisoning-size", cl::desc( "Inline shadow poisoning for blocks up to the given size in bytes."), cl::Hidden, cl::init(64))

static

ClMaxInsnsToInstrumentPerBB

cl::opt<int> ClMaxInsnsToInstrumentPerBB("asan-max-ins-per-bb", cl::init(10000), cl::desc("maximal number of instructions to instrument in any given BB"), cl::Hidden)

static

Referenced by instrumentMaskedLoadOrStore().

ClMemoryAccessCallbackPrefix

cl::opt<std::string> ClMemoryAccessCallbackPrefix("asan-memory-access-callback-prefix", cl::desc("Prefix for memory access callbacks"), cl::Hidden, cl::init("__asan_"))

static

Referenced by instrumentMaskedLoadOrStore().

ClOpt

cl::opt<bool> ClOpt("asan-opt", cl::desc("Optimize instrumentation"), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

ClOptGlobals

cl::opt<bool> ClOptGlobals("asan-opt-globals", cl::desc("Don't instrument scalar globals"), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

ClOptSameTemp

cl::opt<bool> ClOptSameTemp("asan-opt-same-temp", cl::desc("Instrument the same temp just once"), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

ClOptStack

cl::opt<bool> ClOptStack("asan-opt-stack", cl::desc("Don't instrument scalar stack variables"), cl::Hidden, cl::init(false))

static

Referenced by instrumentMaskedLoadOrStore().

ClRealignStack

cl::opt<unsigned> ClRealignStack("asan-realign-stack", cl::desc("Realign stack to the value of this flag (power of two)"), cl::Hidden, cl::init(32))

static

ClRecover

cl::opt<bool> ClRecover("asan-recover", cl::desc("Enable recovery mode (continue-after-error)."), cl::Hidden, cl::init(false))

static

Referenced by GetCtorAndDtorPriority().

ClRedzoneByvalArgs

cl::opt<bool> ClRedzoneByvalArgs("asan-redzone-byval-args", cl::desc("Create redzones for byval " "arguments (extra copy " "required)"), cl::Hidden, cl::init(true))

static

Referenced by GetCtorAndDtorPriority().

ClSkipPromotableAllocas

cl::opt<bool> ClSkipPromotableAllocas("asan-skip-promotable-allocas", cl::desc("Do not instrument promotable allocas"), cl::Hidden, cl::init(true))

static

Referenced by GlobalWasGeneratedByCompiler().

ClStack

cl::opt<bool> ClStack("asan-stack", cl::desc("Handle stack memory"), cl::Hidden, cl::init(true))

static

Referenced by GetCtorAndDtorPriority().

ClUseAfterReturn

cl::opt<bool> ClUseAfterReturn("asan-use-after-return", cl::desc("Check stack-use-after-return"), cl::Hidden, cl::init(true))

static

ClUseAfterScope

cl::opt<bool> ClUseAfterScope("asan-use-after-scope", cl::desc("Check stack-use-after-scope"), cl::Hidden, cl::init(false))

static

Referenced by GetCtorAndDtorPriority().

ClUseGlobalsGC

cl::opt<bool> ClUseGlobalsGC("asan-globals-live-support", cl::desc("Use linker features to support dead " "code stripping of globals"), cl::Hidden, cl::init(true))

static

Referenced by GetCtorAndDtorPriority().

ClUseOdrIndicator

cl::opt<bool> ClUseOdrIndicator("asan-use-odr-indicator", cl::desc("Use odr indicators to improve ODR reporting"), cl::Hidden, cl::init(false))

static

Referenced by GetCtorAndDtorPriority().

ClUsePrivateAlias

cl::opt<bool> ClUsePrivateAlias("asan-use-private-alias", cl::desc("Use private aliases for global variables"), cl::Hidden, cl::init(false))

static

Referenced by GetCtorAndDtorPriority().

ClWithComdat

cl::opt<bool> ClWithComdat("asan-with-comdat", cl::desc("Place ASan constructors in comdat sections"), cl::Hidden, cl::init(true))

static

Referenced by GetCtorAndDtorPriority().

ClWithIfunc

cl::opt<bool> ClWithIfunc("asan-with-ifunc", cl::desc("Access dynamic shadow through an ifunc global on " "platforms that support this"), cl::Hidden, cl::init(true))

static

Referenced by getShadowMapping().

ClWithIfuncSuppressRemat

cl::opt<bool> ClWithIfuncSuppressRemat("asan-with-ifunc-suppress-remat", cl::desc("Suppress rematerialization of dynamic shadow address by passing " "it through inline asm in prologue."), cl::Hidden, cl::init(true))

static

Referenced by instrumentMaskedLoadOrStore().

false

INITIALIZE_PASS (ASanGlobalsMetadataWrapperPass, "asan-globals-md", "Read metadata to mark which globals should be instrumented " "when running ASan.", false, true) char AddressSanitizerLegacyPass false

Definition at line 1217 of file AddressSanitizer.cpp.

kAArch64_ShadowOffset64

const uint64_t kAArch64_ShadowOffset64 = 1ULL << 36

static

Definition at line 104 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kAllocaRzSize

const unsigned kAllocaRzSize = 32

static

Definition at line 183 of file AddressSanitizer.cpp.

kAsanAllocaPoison

const char* const kAsanAllocaPoison = "__asan_alloca_poison"

static

Definition at line 177 of file AddressSanitizer.cpp.

kAsanAllocasUnpoison

const char* const kAsanAllocasUnpoison = "__asan_allocas_unpoison"

static

Definition at line 178 of file AddressSanitizer.cpp.

kAsanCtorAndDtorPriority

const uint64_t kAsanCtorAndDtorPriority = 1

static

Definition at line 131 of file AddressSanitizer.cpp.

Referenced by GetCtorAndDtorPriority().

kAsanEmscriptenCtorAndDtorPriority

const uint64_t kAsanEmscriptenCtorAndDtorPriority = 50

static

Definition at line 133 of file AddressSanitizer.cpp.

Referenced by GetCtorAndDtorPriority().

kAsanGenPrefix

const char* const kAsanGenPrefix = "___asan_gen_"

static

Definition at line 157 of file AddressSanitizer.cpp.

Referenced by createPrivateGlobalForSourceLoc(), and instrumentMaskedLoadOrStore().

kAsanGlobalsRegisteredFlagName

const char* const kAsanGlobalsRegisteredFlagName

static

Initial value:

=
    "___asan_globals_registered"

Definition at line 168 of file AddressSanitizer.cpp.

kAsanHandleNoReturnName

const char* const kAsanHandleNoReturnName = "__asan_handle_no_return"

static

Definition at line 153 of file AddressSanitizer.cpp.

kAsanInitName

const char* const kAsanInitName = "__asan_init"

static

Definition at line 148 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

kAsanModuleCtorName

const char* const kAsanModuleCtorName = "asan.module_ctor"

static

Definition at line 129 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

kAsanModuleDtorName

const char* const kAsanModuleDtorName = "asan.module_dtor"

static

Definition at line 130 of file AddressSanitizer.cpp.

kAsanOptionDetectUseAfterReturn

const char* const kAsanOptionDetectUseAfterReturn

static

Initial value:

=
    "__asan_option_detect_stack_use_after_return"

Definition at line 171 of file AddressSanitizer.cpp.

kAsanPoisonGlobalsName

const char* const kAsanPoisonGlobalsName = "__asan_before_dynamic_init"

static

Definition at line 146 of file AddressSanitizer.cpp.

kAsanPoisonStackMemoryName

const char* const kAsanPoisonStackMemoryName

static

Initial value:

=
    "__asan_poison_stack_memory"

Definition at line 161 of file AddressSanitizer.cpp.

kAsanPtrCmp

const char* const kAsanPtrCmp = "__sanitizer_ptr_cmp"

static

Definition at line 151 of file AddressSanitizer.cpp.

kAsanPtrSub

const char* const kAsanPtrSub = "__sanitizer_ptr_sub"

static

Definition at line 152 of file AddressSanitizer.cpp.

kAsanRegisterElfGlobalsName

const char* const kAsanRegisterElfGlobalsName

static

Initial value:

=
  "__asan_register_elf_globals"

Definition at line 142 of file AddressSanitizer.cpp.

kAsanRegisterGlobalsName

const char* const kAsanRegisterGlobalsName = "__asan_register_globals"

static

Definition at line 135 of file AddressSanitizer.cpp.

kAsanRegisterImageGlobalsName

const char* const kAsanRegisterImageGlobalsName

static

Initial value:

=
  "__asan_register_image_globals"

Definition at line 138 of file AddressSanitizer.cpp.

kAsanReportErrorTemplate

const char* const kAsanReportErrorTemplate = "__asan_report_"

static

Definition at line 134 of file AddressSanitizer.cpp.

kAsanSetShadowPrefix

const char* const kAsanSetShadowPrefix = "__asan_set_shadow_"

static

Definition at line 160 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

kAsanShadowMemoryDynamicAddress

const char* const kAsanShadowMemoryDynamicAddress

static

Initial value:

=
    "__asan_shadow_memory_dynamic_address"

Definition at line 174 of file AddressSanitizer.cpp.

kAsanStackFreeNameTemplate

const char* const kAsanStackFreeNameTemplate = "__asan_stack_free_"

static

Definition at line 156 of file AddressSanitizer.cpp.

kAsanStackMallocNameTemplate

const char* const kAsanStackMallocNameTemplate = "__asan_stack_malloc_"

static

Definition at line 155 of file AddressSanitizer.cpp.

kAsanUnpoisonGlobalsName

const char* const kAsanUnpoisonGlobalsName = "__asan_after_dynamic_init"

static

Definition at line 147 of file AddressSanitizer.cpp.

kAsanUnpoisonStackMemoryName

const char* const kAsanUnpoisonStackMemoryName

static

Initial value:

=
    "__asan_unpoison_stack_memory"

Definition at line 163 of file AddressSanitizer.cpp.

kAsanUnregisterElfGlobalsName

const char* const kAsanUnregisterElfGlobalsName

static

Initial value:

=
  "__asan_unregister_elf_globals"

Definition at line 144 of file AddressSanitizer.cpp.

kAsanUnregisterGlobalsName

const char* const kAsanUnregisterGlobalsName

static

Initial value:

=
    "__asan_unregister_globals"

Definition at line 136 of file AddressSanitizer.cpp.

kAsanUnregisterImageGlobalsName

const char* const kAsanUnregisterImageGlobalsName

static

Initial value:

=
  "__asan_unregister_image_globals"

Definition at line 140 of file AddressSanitizer.cpp.

kAsanVersionCheckNamePrefix

const char* const kAsanVersionCheckNamePrefix

static

Initial value:

=
    "__asan_version_mismatch_check_v"

Definition at line 149 of file AddressSanitizer.cpp.

kCurrentStackFrameMagic

const uintptr_t kCurrentStackFrameMagic = 0x41B58AB3

static

Definition at line 126 of file AddressSanitizer.cpp.

kDefaultShadowOffset32

const uint64_t kDefaultShadowOffset32 = 1ULL << 29

static

Definition at line 93 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kDefaultShadowOffset64

const uint64_t kDefaultShadowOffset64 = 1ULL << 44

static

Definition at line 94 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kDefaultShadowScale

const uint64_t kDefaultShadowScale = 3

static

Definition at line 92 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kDynamicShadowSentinel

const uint64_t kDynamicShadowSentinel

static

Initial value:

=
    std::numeric_limits<uint64_t>::max()

Definition at line 95 of file AddressSanitizer.cpp.

Referenced by getShadowMapping(), and instrumentMaskedLoadOrStore().

kEmscriptenShadowOffset

const uint64_t kEmscriptenShadowOffset = 0

static

Definition at line 112 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kFreeBSD_ShadowOffset32

const uint64_t kFreeBSD_ShadowOffset32 = 1ULL << 30

static

Definition at line 105 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kFreeBSD_ShadowOffset64

const uint64_t kFreeBSD_ShadowOffset64 = 1ULL << 46

static

Definition at line 106 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kLinuxKasan_ShadowOffset64

const uint64_t kLinuxKasan_ShadowOffset64 = 0xdffffc0000000000

static

Definition at line 99 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kMaxAsanStackMallocSizeClass

const int kMaxAsanStackMallocSizeClass = 10

static

Definition at line 154 of file AddressSanitizer.cpp.

Referenced by GetCtorAndDtorPriority(), and instrumentMaskedLoadOrStore().

kMaxStackMallocSize

const size_t kMaxStackMallocSize = 1 << 16

static

Definition at line 125 of file AddressSanitizer.cpp.

Referenced by StackMallocSizeClass().

kMinStackMallocSize

const size_t kMinStackMallocSize = 1 << 6

static

Definition at line 124 of file AddressSanitizer.cpp.

Referenced by StackMallocSizeClass().

kMIPS32_ShadowOffset32

const uint64_t kMIPS32_ShadowOffset32 = 0x0aaa0000

static

Definition at line 102 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kMIPS64_ShadowOffset64

const uint64_t kMIPS64_ShadowOffset64 = 1ULL << 37

static

Definition at line 103 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kMyriadCacheBitMask32

const uint64_t kMyriadCacheBitMask32 = 0x40000000ULL

static

Definition at line 119 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

kMyriadDDRTag

const uint64_t kMyriadDDRTag = 4

static

Definition at line 118 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

kMyriadMemoryOffset32

const uint64_t kMyriadMemoryOffset32 = 0x80000000ULL

static

Definition at line 115 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kMyriadMemorySize32

const uint64_t kMyriadMemorySize32 = 0x20000000ULL

static

Definition at line 116 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kMyriadShadowScale

const uint64_t kMyriadShadowScale = 5

static

Definition at line 114 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kMyriadTagShift

const uint64_t kMyriadTagShift = 29

static

Definition at line 117 of file AddressSanitizer.cpp.

Referenced by instrumentMaskedLoadOrStore().

kNetBSD_ShadowOffset32

const uint64_t kNetBSD_ShadowOffset32 = 1ULL << 30

static

Definition at line 107 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kNetBSD_ShadowOffset64

const uint64_t kNetBSD_ShadowOffset64 = 1ULL << 46

static

Definition at line 108 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kNetBSDKasan_ShadowOffset64

const uint64_t kNetBSDKasan_ShadowOffset64 = 0xdfff900000000000

static

Definition at line 109 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kNumberOfAccessSizes

const size_t kNumberOfAccessSizes = 5

static

Definition at line 181 of file AddressSanitizer.cpp.

Referenced by createOrdering(), llvm::createThreadSanitizerLegacyPassPass(), GetCtorAndDtorPriority(), instrumentMaskedLoadOrStore(), and TypeSizeToSizeIndex().

kODRGenPrefix

const char* const kODRGenPrefix = "__odr_asan_gen_"

static

Definition at line 158 of file AddressSanitizer.cpp.

kPPC64_ShadowOffset64

const uint64_t kPPC64_ShadowOffset64 = 1ULL << 44

static

Definition at line 100 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kPS4CPU_ShadowOffset64

const uint64_t kPS4CPU_ShadowOffset64 = 1ULL << 40

static

Definition at line 110 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kRetiredStackFrameMagic

const uintptr_t kRetiredStackFrameMagic = 0x45E0360E

static

Definition at line 127 of file AddressSanitizer.cpp.

kSanCovGenPrefix

const char* const kSanCovGenPrefix = "__sancov_gen_"

static

Definition at line 159 of file AddressSanitizer.cpp.

kSmallX86_64ShadowOffsetAlignMask

const uint64_t kSmallX86_64ShadowOffsetAlignMask = ~0xFFFULL

static

Definition at line 98 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kSmallX86_64ShadowOffsetBase

const uint64_t kSmallX86_64ShadowOffsetBase = 0x7FFFFFFF

static

Definition at line 97 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kSystemZ_ShadowOffset64

const uint64_t kSystemZ_ShadowOffset64 = 1ULL << 52

static

Definition at line 101 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kWindowsShadowOffset32

const uint64_t kWindowsShadowOffset32 = 3ULL << 28

static

Definition at line 111 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().

kWindowsShadowOffset64

const uint64_t kWindowsShadowOffset64 = kDynamicShadowSentinel

static

Definition at line 122 of file AddressSanitizer.cpp.

Referenced by getShadowMapping().