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ASan: add blacklist file to ASan pass options. Clang patch for this will follow.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169143 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov 2012-12-03 19:09:26 +00:00
parent d4a05e0c2c
commit b0dcf61252
2 changed files with 27 additions and 15 deletions
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7
include/llvm/Transforms/Instrumentation.h
View File

@ -14,6 +14,8 @@
#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_H
#define LLVM_TRANSFORMS_INSTRUMENTATION_H
#include "llvm/ADT/StringRef.h"
namespace llvm {
class ModulePass;
@ -36,8 +38,9 @@ ModulePass *createGCOVProfilerPass(bool EmitNotes = true, bool EmitData = true,
// Insert AddressSanitizer (address sanity checking) instrumentation
FunctionPass *createAddressSanitizerFunctionPass(
bool CheckInitOrder = false, bool CheckUseAfterReturn = false,
bool CheckLifetime = false);
ModulePass *createAddressSanitizerModulePass(bool CheckInitOrder = false);
bool CheckLifetime = false, StringRef BlacklistFile = StringRef());
ModulePass *createAddressSanitizerModulePass(
bool CheckInitOrder = false, StringRef BlacklistFile = StringRef());
// Insert MemorySanitizer instrumentation (detection of uninitialized reads)
FunctionPass *createMemorySanitizerPass();
// Insert ThreadSanitizer (race detection) instrumentation

35
lib/Transforms/Instrumentation/AddressSanitizer.cpp
View File

@ -112,9 +112,8 @@ static cl::opt<bool> ClInitializers("asan-initialization-order",
cl::desc("Handle C++ initializer order"), cl::Hidden, cl::init(false));
static cl::opt<bool> ClMemIntrin("asan-memintrin",
cl::desc("Handle memset/memcpy/memmove"), cl::Hidden, cl::init(true));
// This flag may need to be replaced with -fasan-blacklist.
static cl::opt<std::string> ClBlackListFile("asan-blacklist",
cl::desc("File containing the list of functions to ignore "
static cl::opt<std::string> ClBlacklistFile("asan-blacklist",
cl::desc("File containing the list of objects to ignore "
"during instrumentation"), cl::Hidden);
// These flags allow to change the shadow mapping.
@ -191,11 +190,14 @@ static size_t RedzoneSize() {
struct AddressSanitizer : public FunctionPass {
AddressSanitizer(bool CheckInitOrder = false,
bool CheckUseAfterReturn = false,
bool CheckLifetime = false)
bool CheckLifetime = false,
StringRef BlacklistFile = StringRef())
: FunctionPass(ID),
CheckInitOrder(CheckInitOrder || ClInitializers),
CheckUseAfterReturn(CheckUseAfterReturn || ClUseAfterReturn),
CheckLifetime(CheckLifetime || ClCheckLifetime) {}
CheckLifetime(CheckLifetime || ClCheckLifetime),
BlacklistFile(BlacklistFile.empty() ? ClBlacklistFile
: BlacklistFile) {}
virtual const char *getPassName() const {
return "AddressSanitizerFunctionPass";
}
@ -254,6 +256,7 @@ struct AddressSanitizer : public FunctionPass {
Function *AsanInitFunction;
Function *AsanStackMallocFunc, *AsanStackFreeFunc;
Function *AsanHandleNoReturnFunc;
SmallString<64> BlacklistFile;
OwningPtr<BlackList> BL;
// This array is indexed by AccessIsWrite and log2(AccessSize).
Function *AsanErrorCallback[2][kNumberOfAccessSizes];
@ -263,9 +266,12 @@ struct AddressSanitizer : public FunctionPass {
class AddressSanitizerModule : public ModulePass {
public:
AddressSanitizerModule(bool CheckInitOrder = false)
AddressSanitizerModule(bool CheckInitOrder = false,
StringRef BlacklistFile = StringRef())
: ModulePass(ID),
CheckInitOrder(CheckInitOrder || ClInitializers) {}
CheckInitOrder(CheckInitOrder || ClInitializers),
BlacklistFile(BlacklistFile.empty() ? ClBlacklistFile
: BlacklistFile) {}
bool runOnModule(Module &M);
static char ID; // Pass identification, replacement for typeid
virtual const char *getPassName() const {
@ -277,6 +283,7 @@ class AddressSanitizerModule : public ModulePass {
Value *LastAddr);
bool CheckInitOrder;
SmallString<64> BlacklistFile;
OwningPtr<BlackList> BL;
SetOfDynamicallyInitializedGlobals DynamicallyInitializedGlobals;
Type *IntptrTy;
@ -291,17 +298,19 @@ INITIALIZE_PASS(AddressSanitizer, "asan",
"AddressSanitizer: detects use-after-free and out-of-bounds bugs.",
false, false)
FunctionPass *llvm::createAddressSanitizerFunctionPass(
bool CheckInitOrder, bool CheckUseAfterReturn, bool CheckLifetime) {
bool CheckInitOrder, bool CheckUseAfterReturn, bool CheckLifetime,
StringRef BlacklistFile) {
return new AddressSanitizer(CheckInitOrder, CheckUseAfterReturn,
CheckLifetime);
CheckLifetime, BlacklistFile);
}
char AddressSanitizerModule::ID = 0;
INITIALIZE_PASS(AddressSanitizerModule, "asan-module",
"AddressSanitizer: detects use-after-free and out-of-bounds bugs."
"ModulePass", false, false)
ModulePass *llvm::createAddressSanitizerModulePass(bool CheckInitOrder) {
return new AddressSanitizerModule(CheckInitOrder);
ModulePass *llvm::createAddressSanitizerModulePass(
bool CheckInitOrder, StringRef BlacklistFile) {
return new AddressSanitizerModule(CheckInitOrder, BlacklistFile);
}
static size_t TypeSizeToSizeIndex(uint32_t TypeSize) {
@ -618,7 +627,7 @@ bool AddressSanitizerModule::runOnModule(Module &M) {
TD = getAnalysisIfAvailable<DataLayout>();
if (!TD)
return false;
BL.reset(new BlackList(ClBlackListFile));
BL.reset(new BlackList(BlacklistFile));
if (BL->isIn(M)) return false;
DynamicallyInitializedGlobals.Init(M);
C = &(M.getContext());
@ -793,7 +802,7 @@ bool AddressSanitizer::doInitialization(Module &M) {
if (!TD)
return false;
BL.reset(new BlackList(ClBlackListFile));
BL.reset(new BlackList(BlacklistFile));
DynamicallyInitializedGlobals.Init(M);
C = &(M.getContext());