1 //===-- ObjectFilePECOFF.h --------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef liblldb_ObjectFilePECOFF_h_ 11 #define liblldb_ObjectFilePECOFF_h_ 12 13 #include <vector> 14 15 #include "lldb/Host/Mutex.h" 16 #include "lldb/Symbol/ObjectFile.h" 17 18 class ObjectFilePECOFF : 19 public lldb_private::ObjectFile 20 { 21 public: 22 23 //------------------------------------------------------------------ 24 // Static Functions 25 //------------------------------------------------------------------ 26 static void 27 Initialize(); 28 29 static void 30 Terminate(); 31 32 static const char * 33 GetPluginNameStatic(); 34 35 static const char * 36 GetPluginDescriptionStatic(); 37 38 static ObjectFile * 39 CreateInstance (lldb_private::Module* module, 40 lldb::DataBufferSP& dataSP, 41 const lldb_private::FileSpec* file, 42 lldb::addr_t offset, 43 lldb::addr_t length); 44 45 static lldb_private::ObjectFile * 46 CreateMemoryInstance (lldb_private::Module* module, 47 lldb::DataBufferSP& data_sp, 48 const lldb::ProcessSP &process_sp, 49 lldb::addr_t header_addr); 50 static bool 51 MagicBytesMatch (lldb::DataBufferSP& dataSP); 52 53 54 ObjectFilePECOFF (lldb_private::Module* module, 55 lldb::DataBufferSP& dataSP, 56 const lldb_private::FileSpec* file, 57 lldb::addr_t offset, 58 lldb::addr_t length); 59 60 virtual 61 ~ObjectFilePECOFF(); 62 63 virtual bool 64 ParseHeader (); 65 66 virtual lldb::ByteOrder 67 GetByteOrder () const; 68 69 virtual bool 70 IsExecutable () const; 71 72 virtual size_t 73 GetAddressByteSize () const; 74 75 // virtual lldb_private::AddressClass 76 // GetAddressClass (lldb::addr_t file_addr); 77 // 78 virtual lldb_private::Symtab * 79 GetSymtab(); 80 81 virtual lldb_private::SectionList * 82 GetSectionList(); 83 84 virtual void 85 Dump (lldb_private::Stream *s); 86 87 virtual bool 88 GetArchitecture (lldb_private::ArchSpec &arch); 89 90 virtual bool 91 GetUUID (lldb_private::UUID* uuid); 92 93 virtual uint32_t 94 GetDependentModules (lldb_private::FileSpecList& files); 95 96 //------------------------------------------------------------------ 97 // PluginInterface protocol 98 //------------------------------------------------------------------ 99 virtual const char * 100 GetPluginName(); 101 102 virtual const char * 103 GetShortPluginName(); 104 105 virtual uint32_t 106 GetPluginVersion(); 107 // 108 // virtual lldb_private::Address 109 // GetEntryPointAddress (); 110 111 virtual ObjectFile::Type 112 CalculateType(); 113 114 virtual ObjectFile::Strata 115 CalculateStrata(); 116 117 protected: 118 bool NeedsEndianSwap() const; 119 120 typedef struct dos_header { // DOS .EXE header 121 uint16_t e_magic; // Magic number 122 uint16_t e_cblp; // Bytes on last page of file 123 uint16_t e_cp; // Pages in file 124 uint16_t e_crlc; // Relocations 125 uint16_t e_cparhdr; // Size of header in paragraphs 126 uint16_t e_minalloc; // Minimum extra paragraphs needed 127 uint16_t e_maxalloc; // Maximum extra paragraphs needed 128 uint16_t e_ss; // Initial (relative) SS value 129 uint16_t e_sp; // Initial SP value 130 uint16_t e_csum; // Checksum 131 uint16_t e_ip; // Initial IP value 132 uint16_t e_cs; // Initial (relative) CS value 133 uint16_t e_lfarlc; // File address of relocation table 134 uint16_t e_ovno; // Overlay number 135 uint16_t e_res[4]; // Reserved words 136 uint16_t e_oemid; // OEM identifier (for e_oeminfo) 137 uint16_t e_oeminfo; // OEM information; e_oemid specific 138 uint16_t e_res2[10]; // Reserved words 139 uint32_t e_lfanew; // File address of new exe header 140 } dos_header_t; 141 142 typedef struct coff_header { 143 uint16_t machine; 144 uint16_t nsects; 145 uint32_t modtime; 146 uint32_t symoff; 147 uint32_t nsyms; 148 uint16_t hdrsize; 149 uint16_t flags; 150 } coff_header_t; 151 152 typedef struct data_directory { 153 uint32_t vmaddr; 154 uint32_t vmsize; 155 } data_directory_t; 156 157 typedef struct coff_opt_header 158 { 159 uint16_t magic; 160 uint8_t major_linker_version; 161 uint8_t minor_linker_version; 162 uint32_t code_size; 163 uint32_t data_size; 164 uint32_t bss_size; 165 uint32_t entry; 166 uint32_t code_offset; 167 uint32_t data_offset; 168 169 uint64_t image_base; 170 uint32_t sect_alignment; 171 uint32_t file_alignment; 172 uint16_t major_os_system_version; 173 uint16_t minor_os_system_version; 174 uint16_t major_image_version; 175 uint16_t minor_image_version; 176 uint16_t major_subsystem_version; 177 uint16_t minor_subsystem_version; 178 uint32_t reserved1; 179 uint32_t image_size; 180 uint32_t header_size; 181 uint32_t checksum; 182 uint16_t subsystem; 183 uint16_t dll_flags; 184 uint64_t stack_reserve_size; 185 uint64_t stack_commit_size; 186 uint64_t heap_reserve_size; 187 uint64_t heap_commit_size; 188 uint32_t loader_flags; 189 // uint32_t num_data_dir_entries; 190 std::vector<data_directory> data_dirs; // will contain num_data_dir_entries entries 191 } coff_opt_header_t; 192 193 typedef struct section_header { 194 char name[8]; 195 uint32_t vmsize; // Virtual Size 196 uint32_t vmaddr; // Virtual Addr 197 uint32_t size; // File size 198 uint32_t offset; // File offset 199 uint32_t reloff; // Offset to relocations 200 uint32_t lineoff;// Offset to line table entries 201 uint16_t nreloc; // Number of relocation entries 202 uint16_t nline; // Number of line table entries 203 uint32_t flags; 204 } section_header_t; 205 206 typedef struct coff_symbol { 207 char name[8]; 208 uint32_t value; 209 uint16_t sect; 210 uint16_t type; 211 uint8_t storage; 212 uint8_t naux; 213 } coff_symbol_t; 214 215 bool ParseDOSHeader (); 216 bool ParseCOFFHeader (uint32_t* offset_ptr); 217 bool ParseCOFFOptionalHeader (uint32_t* offset_ptr); 218 bool ParseSectionHeaders (uint32_t offset); 219 220 static void DumpDOSHeader(lldb_private::Stream *s, const dos_header_t& header); 221 static void DumpCOFFHeader(lldb_private::Stream *s, const coff_header_t& header); 222 static void DumpOptCOFFHeader(lldb_private::Stream *s, const coff_opt_header_t& header); 223 void DumpSectionHeaders(lldb_private::Stream *s); 224 void DumpSectionHeader(lldb_private::Stream *s, const section_header_t& sh); 225 bool GetSectionName(std::string& sect_name, const section_header_t& sect); 226 227 typedef std::vector<section_header_t> SectionHeaderColl; 228 typedef SectionHeaderColl::iterator SectionHeaderCollIter; 229 typedef SectionHeaderColl::const_iterator SectionHeaderCollConstIter; 230 private: 231 mutable lldb_private::Mutex m_mutex; 232 mutable std::auto_ptr<lldb_private::SectionList> m_sections_ap; 233 mutable std::auto_ptr<lldb_private::Symtab> m_symtab_ap; 234 dos_header_t m_dos_header; 235 coff_header_t m_coff_header; 236 coff_opt_header_t m_coff_header_opt; 237 SectionHeaderColl m_sect_headers; 238 }; 239 240 #endif // #ifndef liblldb_ObjectFilePECOFF_h_ 241