1 //===-- VMRange.h -----------------------------------------------*- 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 #ifndef LLDB_UTILITY_VMRANGE_H 10 #define LLDB_UTILITY_VMRANGE_H 11 12 #include "lldb/lldb-types.h" 13 #include "llvm/Support/raw_ostream.h" 14 15 #include <cstddef> 16 #include <cstdint> 17 #include <vector> 18 19 namespace lldb_private { 20 21 // A vm address range. These can represent offsets ranges or actual 22 // addresses. 23 class VMRange { 24 public: 25 typedef std::vector<VMRange> collection; 26 typedef collection::iterator iterator; 27 typedef collection::const_iterator const_iterator; 28 29 VMRange() = default; 30 31 VMRange(lldb::addr_t start_addr, lldb::addr_t end_addr) 32 : m_base_addr(start_addr), 33 m_byte_size(end_addr > start_addr ? end_addr - start_addr : 0) {} 34 35 ~VMRange() = default; 36 37 void Clear() { 38 m_base_addr = 0; 39 m_byte_size = 0; 40 } 41 42 // Set the start and end values 43 void Reset(lldb::addr_t start_addr, lldb::addr_t end_addr) { 44 SetBaseAddress(start_addr); 45 SetEndAddress(end_addr); 46 } 47 48 // Set the start value for the range, and keep the same size 49 void SetBaseAddress(lldb::addr_t base_addr) { m_base_addr = base_addr; } 50 51 void SetEndAddress(lldb::addr_t end_addr) { 52 const lldb::addr_t base_addr = GetBaseAddress(); 53 if (end_addr > base_addr) 54 m_byte_size = end_addr - base_addr; 55 else 56 m_byte_size = 0; 57 } 58 59 lldb::addr_t GetByteSize() const { return m_byte_size; } 60 61 void SetByteSize(lldb::addr_t byte_size) { m_byte_size = byte_size; } 62 63 lldb::addr_t GetBaseAddress() const { return m_base_addr; } 64 65 lldb::addr_t GetEndAddress() const { return GetBaseAddress() + m_byte_size; } 66 67 bool IsValid() const { return m_byte_size > 0; } 68 69 bool Contains(lldb::addr_t addr) const { 70 return (GetBaseAddress() <= addr) && (addr < GetEndAddress()); 71 } 72 73 bool Contains(const VMRange &range) const { 74 if (Contains(range.GetBaseAddress())) { 75 lldb::addr_t range_end = range.GetEndAddress(); 76 return (GetBaseAddress() <= range_end) && (range_end <= GetEndAddress()); 77 } 78 return false; 79 } 80 81 void Dump(llvm::raw_ostream &s, lldb::addr_t base_addr = 0, 82 uint32_t addr_width = 8) const; 83 84 static bool ContainsValue(const VMRange::collection &coll, 85 lldb::addr_t value); 86 87 static bool ContainsRange(const VMRange::collection &coll, 88 const VMRange &range); 89 90 protected: 91 lldb::addr_t m_base_addr = 0; 92 lldb::addr_t m_byte_size = 0; 93 }; 94 95 bool operator==(const VMRange &lhs, const VMRange &rhs); 96 bool operator!=(const VMRange &lhs, const VMRange &rhs); 97 bool operator<(const VMRange &lhs, const VMRange &rhs); 98 bool operator<=(const VMRange &lhs, const VMRange &rhs); 99 bool operator>(const VMRange &lhs, const VMRange &rhs); 100 bool operator>=(const VMRange &lhs, const VMRange &rhs); 101 102 } // namespace lldb_private 103 104 #endif // LLDB_UTILITY_VMRANGE_H 105