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 TypeSize TypeStoreSize = TypeSize::getFixed(0); 31 MaybeAlign Alignment; 32 // The mask Value, if we're looking at a masked load/store. 33 Value *MaybeMask; 34 // The EVL Value, if we're looking at a vp intrinsic. 35 Value *MaybeEVL; 36 // The Stride Value, if we're looking at a strided load/store. 37 Value *MaybeStride; 38 39 InterestingMemoryOperand(Instruction *I, unsigned OperandNo, bool IsWrite, 40 class Type *OpType, MaybeAlign Alignment, 41 Value *MaybeMask = nullptr, 42 Value *MaybeEVL = nullptr, 43 Value *MaybeStride = nullptr) IsWrite(IsWrite)44 : IsWrite(IsWrite), OpType(OpType), Alignment(Alignment), 45 MaybeMask(MaybeMask), MaybeEVL(MaybeEVL), MaybeStride(MaybeStride) { 46 const DataLayout &DL = I->getDataLayout(); 47 TypeStoreSize = DL.getTypeStoreSizeInBits(OpType); 48 PtrUse = &I->getOperandUse(OperandNo); 49 } 50 getInsn()51 Instruction *getInsn() { return cast<Instruction>(PtrUse->getUser()); } 52 getPtr()53 Value *getPtr() { return PtrUse->get(); } 54 }; 55 56 // Get AddressSanitizer parameters. 57 void getAddressSanitizerParams(const Triple &TargetTriple, int LongSize, 58 bool IsKasan, uint64_t *ShadowBase, 59 int *MappingScale, bool *OrShadowOffset); 60 61 } // namespace llvm 62 63 #endif 64