1 /** 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef LIBPANDABASE_MEM_MEM_RANGE_H 17 #define LIBPANDABASE_MEM_MEM_RANGE_H 18 19 #include <ostream> 20 21 namespace panda::mem { 22 23 /** 24 * Represents range of bytes [start_address, end_address] 25 */ 26 class MemRange { 27 public: MemRange(uintptr_t start_address,uintptr_t end_address)28 MemRange(uintptr_t start_address, uintptr_t end_address) : start_address_(start_address), end_address_(end_address) 29 { 30 ASSERT(end_address_ >= start_address_); 31 } 32 IsAddressInRange(uintptr_t addr)33 bool IsAddressInRange(uintptr_t addr) const 34 { 35 return (addr >= start_address_) && (addr <= end_address_); 36 } 37 GetStartAddress()38 uintptr_t GetStartAddress() const 39 { 40 return start_address_; 41 } 42 GetEndAddress()43 uintptr_t GetEndAddress() const 44 { 45 return end_address_; 46 } 47 IsIntersect(const MemRange & other)48 bool IsIntersect(const MemRange &other) const 49 { 50 return ((end_address_ >= other.start_address_) && (end_address_ <= other.end_address_)) || 51 ((start_address_ >= other.start_address_) && (start_address_ <= other.end_address_)) || 52 ((start_address_ < other.start_address_) && (end_address_ > other.end_address_)); 53 } 54 Contains(const MemRange & other)55 bool Contains(const MemRange &other) const 56 { 57 return start_address_ <= other.start_address_ && end_address_ >= other.end_address_; 58 } 59 Contains(uintptr_t addr)60 bool Contains(uintptr_t addr) const 61 { 62 return start_address_ <= addr && addr < end_address_; 63 } 64 65 friend std::ostream &operator<<(std::ostream &os, MemRange const &mem_range) 66 { 67 return os << std::hex << "[ 0x" << mem_range.GetStartAddress() << " : 0x" << mem_range.GetEndAddress() << "]"; 68 } 69 70 virtual ~MemRange() = default; 71 72 DEFAULT_COPY_SEMANTIC(MemRange); 73 DEFAULT_MOVE_SEMANTIC(MemRange); 74 75 private: 76 uintptr_t start_address_; /// < address of the first byte in memory range 77 uintptr_t end_address_; /// < address of the last byte in memory range 78 }; 79 80 } // namespace panda::mem 81 82 #endif // LIBPANDABASE_MEM_MEM_RANGE_H 83