WindowsSecureHotPatching.cpp File Reference

#include "llvm/ADT/SmallSet.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Module.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/MemoryBuffer.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "windows-secure-hot-patch"

Functions
	INITIALIZE_PASS (WindowsSecureHotPatching, "windows-secure-hot-patch", "Mark functions for Windows hot patch support", false, false) ModulePass *llvm
static bool	TypeContainsPointers (Type *ty)
static bool	globalVariableNeedsRedirect (GlobalVariable *GV)
static GlobalVariable *	getOrCreateRefVariable (Function &F, SmallDenseMap< GlobalVariable *, GlobalVariable * > &RefMapping, GlobalVariable *GV)
static Value *	rewriteGlobalVariablesInConstant (Constant *C, SmallDenseMap< GlobalVariable *, Value * > &GVLoadMap, IRBuilder<> &IRBuilderAtEntry)
static bool	searchConstantExprForGlobalVariables (Value *V, SmallDenseMap< GlobalVariable *, Value * > &GVLoadMap, SmallVector< GlobalVariableUse > &GVUses)

Variables
static cl::opt< std::string >	LLVMMSSecureHotPatchFunctionsFile ("ms-secure-hotpatch-functions-file", cl::value_desc("filename"), cl::desc("A file containing list of mangled function names to mark for " "Windows Secure Hot-Patching"))
static cl::list< std::string >	LLVMMSSecureHotPatchFunctionsList ("ms-secure-hotpatch-functions-list", cl::value_desc("list"), cl::desc("A list of mangled function names to mark for Windows Secure " "Hot-Patching"), cl::CommaSeparated)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "windows-secure-hot-patch"

Definition at line 153 of file WindowsSecureHotPatching.cpp.

Function Documentation

getOrCreateRefVariable()

static GlobalVariable * getOrCreateRefVariable ( Function &  F, SmallDenseMap< GlobalVariable *, GlobalVariable * > &  RefMapping, GlobalVariable *  GV  )

static

Definition at line 346 of file WindowsSecureHotPatching.cpp.

References llvm::concat(), llvm::dwarf_linker::DebugInfo, F, llvm::DIScope::getFile(), llvm::ConstantExpr::getGetElementPtr(), llvm::Value::getName(), llvm::DataLayout::getTypeSizeInBits(), llvm::GlobalValue::getValueType(), llvm::GlobalValue::LinkOnceAnyLinkage, and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::try_emplace().

globalVariableNeedsRedirect()

static bool globalVariableNeedsRedirect ( GlobalVariable *  GV )

static

Definition at line 294 of file WindowsSecureHotPatching.cpp.

References llvm::Value::getName(), llvm::GlobalValue::getValueType(), llvm::GlobalVariable::hasAttribute(), llvm::GlobalVariable::isConstant(), llvm::StringRef::starts_with(), and TypeContainsPointers().

Referenced by rewriteGlobalVariablesInConstant(), and searchConstantExprForGlobalVariables().

INITIALIZE_PASS()

INITIALIZE_PASS	(	WindowsSecureHotPatching	,
		"windows-secure-hot-patch"	,
		"Mark functions for Windows hot patch support"	,
		false	,
		false
	)

Definition at line 201 of file WindowsSecureHotPatching.cpp.

rewriteGlobalVariablesInConstant()

static Value * rewriteGlobalVariablesInConstant ( Constant *  C, SmallDenseMap< GlobalVariable *, Value * > &  GVLoadMap, IRBuilder<> &  IRBuilderAtEntry  )

static

Definition at line 409 of file WindowsSecureHotPatching.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::at(), llvm::CallingConv::C, globalVariableNeedsRedirect(), llvm::IRBuilderBase::Insert(), OpIndex, llvm::SmallVectorTemplateBase< T, bool >::push_back(), rewriteGlobalVariablesInConstant(), and llvm::User::setOperand().

Referenced by rewriteGlobalVariablesInConstant().

searchConstantExprForGlobalVariables()

static bool searchConstantExprForGlobalVariables ( Value *  V, SmallDenseMap< GlobalVariable *, Value * > &  GVLoadMap, SmallVector< GlobalVariableUse > &  GVUses  )

static

Definition at line 460 of file WindowsSecureHotPatching.cpp.

References globalVariableNeedsRedirect(), OpIndex, and searchConstantExprForGlobalVariables().

Referenced by searchConstantExprForGlobalVariables().

TypeContainsPointers()

static bool TypeContainsPointers ( Type *  ty )

static

Definition at line 270 of file WindowsSecureHotPatching.cpp.

References llvm::Type::ArrayTyID, llvm::Type::getArrayElementType(), llvm::Type::getStructElementType(), llvm::Type::getStructNumElements(), llvm::Type::getTypeID(), I, llvm::Type::PointerTyID, llvm::Type::StructTyID, and TypeContainsPointers().

Referenced by globalVariableNeedsRedirect(), and TypeContainsPointers().

Variable Documentation

LLVMMSSecureHotPatchFunctionsFile

cl::opt< std::string > LLVMMSSecureHotPatchFunctionsFile("ms-secure-hotpatch-functions-file", cl::value_desc("filename"), cl::desc("A file containing list of mangled function names to mark for " "Windows Secure Hot-Patching")) ( "ms-secure-hotpatch-functions-file"  , cl::value_desc("filename")  , cl::desc("A file containing list of mangled function names to mark for " "Windows Secure Hot-Patching")    )

static

LLVMMSSecureHotPatchFunctionsList

cl::list< std::string > LLVMMSSecureHotPatchFunctionsList("ms-secure-hotpatch-functions-list", cl::value_desc("list"), cl::desc("A list of mangled function names to mark for Windows Secure " "Hot-Patching"), cl::CommaSeparated) ( "ms-secure-hotpatch-functions-list"  , cl::value_desc("list")  , cl::desc("A list of mangled function names to mark for Windows Secure " "Hot-Patching")  , cl::CommaSeparated    )

static