1 //===--------- Definition of the AddressSanitizer class ---------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file declares common infrastructure for AddressSanitizer and 10 // HWAddressSanitizer. 11 // 12 //===----------------------------------------------------------------------===// 13 #ifndef LLVM_TRANSFORMS_INSTRUMENTATION_ADDRESSSANITIZERCOMMON_H 14 #define LLVM_TRANSFORMS_INSTRUMENTATION_ADDRESSSANITIZERCOMMON_H 15 16 #include "llvm/Analysis/CFG.h" 17 #include "llvm/Analysis/PostDominators.h" 18 #include "llvm/IR/Dominators.h" 19 #include "llvm/IR/Instruction.h" 20 #include "llvm/IR/IntrinsicInst.h" 21 #include "llvm/IR/Module.h" 22 23 namespace llvm { 24 25 class InterestingMemoryOperand { 26 public: 27 Use *PtrUse; 28 bool IsWrite; 29 Type *OpType; 30 uint64_t TypeSize; 31 MaybeAlign Alignment; 32 // The mask Value, if we're looking at a masked load/store. 33 Value *MaybeMask; 34 35 InterestingMemoryOperand(Instruction *I, unsigned OperandNo, bool IsWrite, 36 class Type *OpType, MaybeAlign Alignment, 37 Value *MaybeMask = nullptr) 38 : IsWrite(IsWrite), OpType(OpType), Alignment(Alignment), 39 MaybeMask(MaybeMask) { 40 const DataLayout &DL = I->getModule()->getDataLayout(); 41 TypeSize = DL.getTypeStoreSizeInBits(OpType); 42 PtrUse = &I->getOperandUse(OperandNo); 43 } 44 45 Instruction *getInsn() { return cast<Instruction>(PtrUse->getUser()); } 46 47 Value *getPtr() { return PtrUse->get(); } 48 }; 49 50 // Get AddressSanitizer parameters. 51 void getAddressSanitizerParams(const Triple &TargetTriple, int LongSize, 52 bool IsKasan, uint64_t *ShadowBase, 53 int *MappingScale, bool *OrShadowOffset); 54 55 } // namespace llvm 56 57 #endif 58