1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "oat.h" 18 #include "utils.h" 19 20 #include <zlib.h> 21 22 namespace art { 23 24 const uint8_t OatHeader::kOatMagic[] = { 'o', 'a', 't', '\n' }; 25 const uint8_t OatHeader::kOatVersion[] = { '0', '0', '7', '\0' }; 26 27 OatHeader::OatHeader() { 28 memset(this, 0, sizeof(*this)); 29 } 30 31 OatHeader::OatHeader(InstructionSet instruction_set, 32 const std::vector<const DexFile*>* dex_files, 33 uint32_t image_file_location_oat_checksum, 34 uint32_t image_file_location_oat_data_begin, 35 const std::string& image_file_location) { 36 memcpy(magic_, kOatMagic, sizeof(kOatMagic)); 37 memcpy(version_, kOatVersion, sizeof(kOatVersion)); 38 39 adler32_checksum_ = adler32(0L, Z_NULL, 0); 40 41 CHECK_NE(instruction_set, kNone); 42 instruction_set_ = instruction_set; 43 UpdateChecksum(&instruction_set_, sizeof(instruction_set_)); 44 45 dex_file_count_ = dex_files->size(); 46 UpdateChecksum(&dex_file_count_, sizeof(dex_file_count_)); 47 48 image_file_location_oat_checksum_ = image_file_location_oat_checksum; 49 UpdateChecksum(&image_file_location_oat_checksum_, sizeof(image_file_location_oat_checksum_)); 50 51 CHECK(IsAligned<kPageSize>(image_file_location_oat_data_begin)); 52 image_file_location_oat_data_begin_ = image_file_location_oat_data_begin; 53 UpdateChecksum(&image_file_location_oat_data_begin_, sizeof(image_file_location_oat_data_begin_)); 54 55 image_file_location_size_ = image_file_location.size(); 56 UpdateChecksum(&image_file_location_size_, sizeof(image_file_location_size_)); 57 UpdateChecksum(image_file_location.data(), image_file_location_size_); 58 59 executable_offset_ = 0; 60 interpreter_to_interpreter_bridge_offset_ = 0; 61 interpreter_to_compiled_code_bridge_offset_ = 0; 62 jni_dlsym_lookup_offset_ = 0; 63 portable_resolution_trampoline_offset_ = 0; 64 portable_to_interpreter_bridge_offset_ = 0; 65 quick_resolution_trampoline_offset_ = 0; 66 quick_to_interpreter_bridge_offset_ = 0; 67 } 68 69 bool OatHeader::IsValid() const { 70 if (memcmp(magic_, kOatMagic, sizeof(kOatMagic)) != 0) { 71 return false; 72 } 73 if (memcmp(version_, kOatVersion, sizeof(kOatVersion)) != 0) { 74 return false; 75 } 76 return true; 77 } 78 79 const char* OatHeader::GetMagic() const { 80 CHECK(IsValid()); 81 return reinterpret_cast<const char*>(magic_); 82 } 83 84 uint32_t OatHeader::GetChecksum() const { 85 CHECK(IsValid()); 86 return adler32_checksum_; 87 } 88 89 void OatHeader::UpdateChecksum(const void* data, size_t length) { 90 DCHECK(IsValid()); 91 const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data); 92 adler32_checksum_ = adler32(adler32_checksum_, bytes, length); 93 } 94 95 InstructionSet OatHeader::GetInstructionSet() const { 96 CHECK(IsValid()); 97 return instruction_set_; 98 } 99 100 uint32_t OatHeader::GetExecutableOffset() const { 101 DCHECK(IsValid()); 102 DCHECK_ALIGNED(executable_offset_, kPageSize); 103 CHECK_GT(executable_offset_, sizeof(OatHeader)); 104 return executable_offset_; 105 } 106 107 void OatHeader::SetExecutableOffset(uint32_t executable_offset) { 108 DCHECK_ALIGNED(executable_offset, kPageSize); 109 CHECK_GT(executable_offset, sizeof(OatHeader)); 110 DCHECK(IsValid()); 111 DCHECK_EQ(executable_offset_, 0U); 112 113 executable_offset_ = executable_offset; 114 UpdateChecksum(&executable_offset_, sizeof(executable_offset)); 115 } 116 117 const void* OatHeader::GetInterpreterToInterpreterBridge() const { 118 return reinterpret_cast<const uint8_t*>(this) + GetInterpreterToInterpreterBridgeOffset(); 119 } 120 121 uint32_t OatHeader::GetInterpreterToInterpreterBridgeOffset() const { 122 DCHECK(IsValid()); 123 CHECK_GE(interpreter_to_interpreter_bridge_offset_, executable_offset_); 124 return interpreter_to_interpreter_bridge_offset_; 125 } 126 127 void OatHeader::SetInterpreterToInterpreterBridgeOffset(uint32_t offset) { 128 CHECK(offset == 0 || offset >= executable_offset_); 129 DCHECK(IsValid()); 130 DCHECK_EQ(interpreter_to_interpreter_bridge_offset_, 0U) << offset; 131 132 interpreter_to_interpreter_bridge_offset_ = offset; 133 UpdateChecksum(&interpreter_to_interpreter_bridge_offset_, sizeof(offset)); 134 } 135 136 const void* OatHeader::GetInterpreterToCompiledCodeBridge() const { 137 return reinterpret_cast<const uint8_t*>(this) + GetInterpreterToCompiledCodeBridgeOffset(); 138 } 139 140 uint32_t OatHeader::GetInterpreterToCompiledCodeBridgeOffset() const { 141 DCHECK(IsValid()); 142 CHECK_GE(interpreter_to_compiled_code_bridge_offset_, interpreter_to_interpreter_bridge_offset_); 143 return interpreter_to_compiled_code_bridge_offset_; 144 } 145 146 void OatHeader::SetInterpreterToCompiledCodeBridgeOffset(uint32_t offset) { 147 CHECK(offset == 0 || offset >= interpreter_to_interpreter_bridge_offset_); 148 DCHECK(IsValid()); 149 DCHECK_EQ(interpreter_to_compiled_code_bridge_offset_, 0U) << offset; 150 151 interpreter_to_compiled_code_bridge_offset_ = offset; 152 UpdateChecksum(&interpreter_to_compiled_code_bridge_offset_, sizeof(offset)); 153 } 154 155 const void* OatHeader::GetJniDlsymLookup() const { 156 return reinterpret_cast<const uint8_t*>(this) + GetJniDlsymLookupOffset(); 157 } 158 159 uint32_t OatHeader::GetJniDlsymLookupOffset() const { 160 DCHECK(IsValid()); 161 CHECK_GE(jni_dlsym_lookup_offset_, interpreter_to_compiled_code_bridge_offset_); 162 return jni_dlsym_lookup_offset_; 163 } 164 165 void OatHeader::SetJniDlsymLookupOffset(uint32_t offset) { 166 CHECK(offset == 0 || offset >= interpreter_to_compiled_code_bridge_offset_); 167 DCHECK(IsValid()); 168 DCHECK_EQ(jni_dlsym_lookup_offset_, 0U) << offset; 169 170 jni_dlsym_lookup_offset_ = offset; 171 UpdateChecksum(&jni_dlsym_lookup_offset_, sizeof(offset)); 172 } 173 174 const void* OatHeader::GetPortableResolutionTrampoline() const { 175 return reinterpret_cast<const uint8_t*>(this) + GetPortableResolutionTrampolineOffset(); 176 } 177 178 uint32_t OatHeader::GetPortableResolutionTrampolineOffset() const { 179 DCHECK(IsValid()); 180 CHECK_GE(portable_resolution_trampoline_offset_, jni_dlsym_lookup_offset_); 181 return portable_resolution_trampoline_offset_; 182 } 183 184 void OatHeader::SetPortableResolutionTrampolineOffset(uint32_t offset) { 185 CHECK(offset == 0 || offset >= jni_dlsym_lookup_offset_); 186 DCHECK(IsValid()); 187 DCHECK_EQ(portable_resolution_trampoline_offset_, 0U) << offset; 188 189 portable_resolution_trampoline_offset_ = offset; 190 UpdateChecksum(&portable_resolution_trampoline_offset_, sizeof(offset)); 191 } 192 193 const void* OatHeader::GetPortableToInterpreterBridge() const { 194 return reinterpret_cast<const uint8_t*>(this) + GetPortableToInterpreterBridgeOffset(); 195 } 196 197 uint32_t OatHeader::GetPortableToInterpreterBridgeOffset() const { 198 DCHECK(IsValid()); 199 CHECK_GE(portable_to_interpreter_bridge_offset_, portable_resolution_trampoline_offset_); 200 return portable_to_interpreter_bridge_offset_; 201 } 202 203 void OatHeader::SetPortableToInterpreterBridgeOffset(uint32_t offset) { 204 CHECK(offset == 0 || offset >= portable_resolution_trampoline_offset_); 205 DCHECK(IsValid()); 206 DCHECK_EQ(portable_to_interpreter_bridge_offset_, 0U) << offset; 207 208 portable_to_interpreter_bridge_offset_ = offset; 209 UpdateChecksum(&portable_to_interpreter_bridge_offset_, sizeof(offset)); 210 } 211 212 const void* OatHeader::GetQuickResolutionTrampoline() const { 213 return reinterpret_cast<const uint8_t*>(this) + GetQuickResolutionTrampolineOffset(); 214 } 215 216 uint32_t OatHeader::GetQuickResolutionTrampolineOffset() const { 217 DCHECK(IsValid()); 218 CHECK_GE(quick_resolution_trampoline_offset_, portable_to_interpreter_bridge_offset_); 219 return quick_resolution_trampoline_offset_; 220 } 221 222 void OatHeader::SetQuickResolutionTrampolineOffset(uint32_t offset) { 223 CHECK(offset == 0 || offset >= portable_to_interpreter_bridge_offset_); 224 DCHECK(IsValid()); 225 DCHECK_EQ(quick_resolution_trampoline_offset_, 0U) << offset; 226 227 quick_resolution_trampoline_offset_ = offset; 228 UpdateChecksum(&quick_resolution_trampoline_offset_, sizeof(offset)); 229 } 230 231 const void* OatHeader::GetQuickToInterpreterBridge() const { 232 return reinterpret_cast<const uint8_t*>(this) + GetQuickToInterpreterBridgeOffset(); 233 } 234 235 uint32_t OatHeader::GetQuickToInterpreterBridgeOffset() const { 236 DCHECK(IsValid()); 237 CHECK_GE(quick_to_interpreter_bridge_offset_, quick_resolution_trampoline_offset_); 238 return quick_to_interpreter_bridge_offset_; 239 } 240 241 void OatHeader::SetQuickToInterpreterBridgeOffset(uint32_t offset) { 242 CHECK(offset == 0 || offset >= quick_resolution_trampoline_offset_); 243 DCHECK(IsValid()); 244 DCHECK_EQ(quick_to_interpreter_bridge_offset_, 0U) << offset; 245 246 quick_to_interpreter_bridge_offset_ = offset; 247 UpdateChecksum(&quick_to_interpreter_bridge_offset_, sizeof(offset)); 248 } 249 250 uint32_t OatHeader::GetImageFileLocationOatChecksum() const { 251 CHECK(IsValid()); 252 return image_file_location_oat_checksum_; 253 } 254 255 uint32_t OatHeader::GetImageFileLocationOatDataBegin() const { 256 CHECK(IsValid()); 257 return image_file_location_oat_data_begin_; 258 } 259 260 uint32_t OatHeader::GetImageFileLocationSize() const { 261 CHECK(IsValid()); 262 return image_file_location_size_; 263 } 264 265 const uint8_t* OatHeader::GetImageFileLocationData() const { 266 CHECK(IsValid()); 267 return image_file_location_data_; 268 } 269 270 std::string OatHeader::GetImageFileLocation() const { 271 CHECK(IsValid()); 272 return std::string(reinterpret_cast<const char*>(GetImageFileLocationData()), 273 GetImageFileLocationSize()); 274 } 275 276 OatMethodOffsets::OatMethodOffsets() 277 : code_offset_(0), 278 frame_size_in_bytes_(0), 279 core_spill_mask_(0), 280 fp_spill_mask_(0), 281 mapping_table_offset_(0), 282 vmap_table_offset_(0), 283 gc_map_offset_(0) 284 {} 285 286 OatMethodOffsets::OatMethodOffsets(uint32_t code_offset, 287 uint32_t frame_size_in_bytes, 288 uint32_t core_spill_mask, 289 uint32_t fp_spill_mask, 290 uint32_t mapping_table_offset, 291 uint32_t vmap_table_offset, 292 uint32_t gc_map_offset 293 ) 294 : code_offset_(code_offset), 295 frame_size_in_bytes_(frame_size_in_bytes), 296 core_spill_mask_(core_spill_mask), 297 fp_spill_mask_(fp_spill_mask), 298 mapping_table_offset_(mapping_table_offset), 299 vmap_table_offset_(vmap_table_offset), 300 gc_map_offset_(gc_map_offset) 301 {} 302 303 OatMethodOffsets::~OatMethodOffsets() {} 304 305 } // namespace art 306
