#include <StackProtector.h>

Inheritance diagram for llvm::StackProtector:

Collaboration diagram for llvm::StackProtector:

Public Types
enum	SSPLayoutKind { SSPLK_None, SSPLK_LargeArray, SSPLK_SmallArray, SSPLK_AddrOf }

typedef ValueMap< const AllocaInst *, SSPLayoutKind >	SSPLayoutMap
	A mapping of AllocaInsts to their required SSP layout. More...

Public Member Functions
	StackProtector ()

	StackProtector (const TargetMachine *TM)

virtual void	getAnalysisUsage (AnalysisUsage &AU) const

SSPLayoutKind	getSSPLayout (const AllocaInst *AI) const

virtual bool	runOnFunction (Function &Fn)

Public Member Functions inherited from llvm::FunctionPass
	FunctionPass (char &pid)

Pass *	createPrinterPass (raw_ostream &O, const std::string &Banner) const
	createPrinterPass - Get a function printer pass. More...

virtual void	assignPassManager (PMStack &PMS, PassManagerType T)

virtual PassManagerType	getPotentialPassManagerType () const
	Return what kind of Pass Manager can manage this pass. More...

Public Member Functions inherited from llvm::Pass
	Pass (PassKind K, char &pid)

virtual	~Pass ()

PassKind	getPassKind () const

virtual const char *	getPassName () const

AnalysisID	getPassID () const
	getPassID - Return the PassID number that corresponds to this pass. More...

virtual bool	doInitialization (Module &)

virtual bool	doFinalization (Module &)

virtual void	print (raw_ostream &O, const Module *M) const

void	dump () const

virtual void	preparePassManager (PMStack &)
	Check if available pass managers are suitable for this pass or not. More...

void	setResolver (AnalysisResolver *AR)

AnalysisResolver *	getResolver () const

virtual void	releaseMemory ()

virtual void *	getAdjustedAnalysisPointer (AnalysisID ID)

virtual ImmutablePass *	getAsImmutablePass ()

virtual PMDataManager *	getAsPMDataManager ()

virtual void	verifyAnalysis () const

virtual void	dumpPassStructure (unsigned Offset=0)

template<typename AnalysisType >
AnalysisType *	getAnalysisIfAvailable () const

bool	mustPreserveAnalysisID (char &AID) const

template<typename AnalysisType >
AnalysisType &	getAnalysis () const

template<typename AnalysisType >
AnalysisType &	getAnalysis (Function &F)

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI) const

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI, Function &F)

Static Public Attributes
static char	ID = 0

Additional Inherited Members
Static Public Member Functions inherited from llvm::Pass
static const PassInfo *	lookupPassInfo (const void *TI)

static const PassInfo *	lookupPassInfo (StringRef Arg)

static Pass *	createPass (AnalysisID ID)

Detailed Description

Definition at line 32 of file StackProtector.h.

Member Typedef Documentation

typedef ValueMap<const AllocaInst *, SSPLayoutKind> llvm::StackProtector::SSPLayoutMap

A mapping of AllocaInsts to their required SSP layout.

Definition at line 48 of file StackProtector.h.

Member Enumeration Documentation

enum llvm::StackProtector::SSPLayoutKind

SSPLayoutKind. Stack Smashing Protection (SSP) rules require that vulnerable stack allocations are located close the stack protector.

Enumerator
SSPLK_None	Did not trigger a stack protector. No effect on data layout.
SSPLK_LargeArray	Array or nested array >= SSP-buffer-size. Closest to the stack protector.
SSPLK_SmallArray	Array or nested array < SSP-buffer-size. 2nd closest to the stack protector.
SSPLK_AddrOf	The address of this allocation is exposed and triggered protection. 3rd closest to the protector.

Definition at line 36 of file StackProtector.h.

Constructor & Destructor Documentation

llvm::StackProtector::StackProtector ( )

inline

Definition at line 108 of file StackProtector.h.

References llvm::PassRegistry::getPassRegistry(), and llvm::initializeStackProtectorPass().

llvm::StackProtector::StackProtector ( const TargetMachine * TM )

inline

Definition at line 111 of file StackProtector.h.

References llvm::PassRegistry::getPassRegistry(), and llvm::initializeStackProtectorPass().

Member Function Documentation

virtual void llvm::StackProtector::getAnalysisUsage ( AnalysisUsage & ) const

inlinevirtual

getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job. If a pass specifies that it uses a particular analysis result to this function, it can then use the getAnalysis<AnalysisType>() function, below.

Reimplemented from llvm::Pass.

Definition at line 117 of file StackProtector.h.

References llvm::AnalysisUsage::addPreserved().

StackProtector::SSPLayoutKind StackProtector::getSSPLayout ( const AllocaInst * AI ) const

Definition at line 57 of file StackProtector.cpp.

References llvm::ValueMap< KeyT, ValueT, Config >::lookup(), and SSPLK_None.

bool StackProtector::runOnFunction ( Function & F )

virtual

runOnFunction - Virtual method overriden by subclasses to do the per-function processing of the pass.

Implements llvm::FunctionPass.

Definition at line 61 of file StackProtector.cpp.

References llvm::StringRef::getAsInteger(), llvm::AttributeSet::getAttribute(), llvm::Function::getAttributes(), llvm::GlobalValue::getParent(), llvm::TargetMachine::getTargetLowering(), llvm::Attribute::getValueAsString(), and llvm::Attribute::isStringAttribute().