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1 //===-- AddressRange.cpp --------------------------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "lldb/Core/AddressRange.h"
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10 #include "lldb/Core/Module.h"
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11 #include "lldb/Target/Target.h"
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12 #include "lldb/Utility/ConstString.h"
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13 #include "lldb/Utility/FileSpec.h"
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14 #include "lldb/Utility/Stream.h"
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15 #include "lldb/lldb-defines.h"
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16
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17 #include "llvm/Support/Compiler.h"
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18
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19 #include <memory>
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20
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21 #include <inttypes.h>
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22
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23 namespace lldb_private {
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24 class SectionList;
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25 }
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26
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27 using namespace lldb;
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28 using namespace lldb_private;
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29
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30 AddressRange::AddressRange() : m_base_addr(), m_byte_size(0) {}
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31
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32 AddressRange::AddressRange(addr_t file_addr, addr_t byte_size,
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33 const SectionList *section_list)
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34 : m_base_addr(file_addr, section_list), m_byte_size(byte_size) {}
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35
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36 AddressRange::AddressRange(const lldb::SectionSP §ion, addr_t offset,
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37 addr_t byte_size)
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38 : m_base_addr(section, offset), m_byte_size(byte_size) {}
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39
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40 AddressRange::AddressRange(const Address &so_addr, addr_t byte_size)
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41 : m_base_addr(so_addr), m_byte_size(byte_size) {}
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42
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43 AddressRange::~AddressRange() {}
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44
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45 // bool
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46 // AddressRange::Contains (const Address &addr) const
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47 //{
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48 // const addr_t byte_size = GetByteSize();
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49 // if (byte_size)
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50 // return addr.GetSection() == m_base_addr.GetSection() &&
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51 // (addr.GetOffset() - m_base_addr.GetOffset()) < byte_size;
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52 //}
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53 //
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54 // bool
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55 // AddressRange::Contains (const Address *addr) const
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56 //{
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57 // if (addr)
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58 // return Contains (*addr);
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59 // return false;
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60 //}
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61
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62 bool AddressRange::ContainsFileAddress(const Address &addr) const {
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63 if (addr.GetSection() == m_base_addr.GetSection())
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64 return (addr.GetOffset() - m_base_addr.GetOffset()) < GetByteSize();
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65 addr_t file_base_addr = GetBaseAddress().GetFileAddress();
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66 if (file_base_addr == LLDB_INVALID_ADDRESS)
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67 return false;
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68
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69 addr_t file_addr = addr.GetFileAddress();
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70 if (file_addr == LLDB_INVALID_ADDRESS)
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71 return false;
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72
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73 if (file_base_addr <= file_addr)
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74 return (file_addr - file_base_addr) < GetByteSize();
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75
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76 return false;
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77 }
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78
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79 bool AddressRange::ContainsFileAddress(addr_t file_addr) const {
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80 if (file_addr == LLDB_INVALID_ADDRESS)
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81 return false;
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82
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83 addr_t file_base_addr = GetBaseAddress().GetFileAddress();
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84 if (file_base_addr == LLDB_INVALID_ADDRESS)
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85 return false;
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86
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87 if (file_base_addr <= file_addr)
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88 return (file_addr - file_base_addr) < GetByteSize();
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89
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90 return false;
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91 }
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92
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93 bool AddressRange::ContainsLoadAddress(const Address &addr,
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94 Target *target) const {
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95 if (addr.GetSection() == m_base_addr.GetSection())
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96 return (addr.GetOffset() - m_base_addr.GetOffset()) < GetByteSize();
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97 addr_t load_base_addr = GetBaseAddress().GetLoadAddress(target);
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98 if (load_base_addr == LLDB_INVALID_ADDRESS)
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99 return false;
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100
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101 addr_t load_addr = addr.GetLoadAddress(target);
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102 if (load_addr == LLDB_INVALID_ADDRESS)
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103 return false;
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104
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105 if (load_base_addr <= load_addr)
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106 return (load_addr - load_base_addr) < GetByteSize();
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107
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108 return false;
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109 }
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110
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111 bool AddressRange::ContainsLoadAddress(addr_t load_addr, Target *target) const {
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112 if (load_addr == LLDB_INVALID_ADDRESS)
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113 return false;
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114
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115 addr_t load_base_addr = GetBaseAddress().GetLoadAddress(target);
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116 if (load_base_addr == LLDB_INVALID_ADDRESS)
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117 return false;
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118
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119 if (load_base_addr <= load_addr)
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120 return (load_addr - load_base_addr) < GetByteSize();
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121
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122 return false;
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123 }
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124
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125 bool AddressRange::Extend(const AddressRange &rhs_range) {
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126 addr_t lhs_end_addr = GetBaseAddress().GetFileAddress() + GetByteSize();
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127 addr_t rhs_base_addr = rhs_range.GetBaseAddress().GetFileAddress();
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128
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129 if (!ContainsFileAddress(rhs_range.GetBaseAddress()) &&
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130 lhs_end_addr != rhs_base_addr)
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131 // The ranges don't intersect at all on the right side of this range.
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132 return false;
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133
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134 addr_t rhs_end_addr = rhs_base_addr + rhs_range.GetByteSize();
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135 if (lhs_end_addr >= rhs_end_addr)
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136 // The rhs range totally overlaps this one, nothing to add.
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137 return false;
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138
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139 m_byte_size += rhs_end_addr - lhs_end_addr;
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140 return true;
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141 }
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142
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143 void AddressRange::Clear() {
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144 m_base_addr.Clear();
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145 m_byte_size = 0;
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146 }
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147
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148 bool AddressRange::Dump(Stream *s, Target *target, Address::DumpStyle style,
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149 Address::DumpStyle fallback_style) const {
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150 addr_t vmaddr = LLDB_INVALID_ADDRESS;
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151 int addr_size = sizeof(addr_t);
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152 if (target)
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153 addr_size = target->GetArchitecture().GetAddressByteSize();
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154
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155 bool show_module = false;
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156 switch (style) {
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157 default:
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158 break;
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159 case Address::DumpStyleSectionNameOffset:
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160 case Address::DumpStyleSectionPointerOffset:
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161 s->PutChar('[');
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162 m_base_addr.Dump(s, target, style, fallback_style);
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163 s->PutChar('-');
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164 DumpAddress(s->AsRawOstream(), m_base_addr.GetOffset() + GetByteSize(),
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165 addr_size);
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166 s->PutChar(')');
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167 return true;
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168 break;
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169
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170 case Address::DumpStyleModuleWithFileAddress:
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171 show_module = true;
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172 LLVM_FALLTHROUGH;
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173 case Address::DumpStyleFileAddress:
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174 vmaddr = m_base_addr.GetFileAddress();
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175 break;
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176
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177 case Address::DumpStyleLoadAddress:
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178 vmaddr = m_base_addr.GetLoadAddress(target);
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179 break;
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180 }
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181
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182 if (vmaddr != LLDB_INVALID_ADDRESS) {
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183 if (show_module) {
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184 ModuleSP module_sp(GetBaseAddress().GetModule());
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185 if (module_sp)
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186 s->Printf("%s", module_sp->GetFileSpec().GetFilename().AsCString(
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187 "<Unknown>"));
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188 }
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189 DumpAddressRange(s->AsRawOstream(), vmaddr, vmaddr + GetByteSize(),
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190 addr_size);
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191 return true;
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192 } else if (fallback_style != Address::DumpStyleInvalid) {
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193 return Dump(s, target, fallback_style, Address::DumpStyleInvalid);
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194 }
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195
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196 return false;
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197 }
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198
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199 void AddressRange::DumpDebug(Stream *s) const {
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200 s->Printf("%p: AddressRange section = %p, offset = 0x%16.16" PRIx64
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201 ", byte_size = 0x%16.16" PRIx64 "\n",
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202 static_cast<const void *>(this),
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203 static_cast<void *>(m_base_addr.GetSection().get()),
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204 m_base_addr.GetOffset(), GetByteSize());
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205 }
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206 //
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207 // bool
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208 // lldb::operator== (const AddressRange& lhs, const AddressRange& rhs)
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209 //{
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210 // if (lhs.GetBaseAddress() == rhs.GetBaseAddress())
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211 // return lhs.GetByteSize() == rhs.GetByteSize();
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212 // return false;
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213 //}
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