Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010, 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 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 17 | #include "CacheReader.h" |
| 18 | |
| 19 | #include "ContextManager.h" |
Logan | 4dcd679 | 2011-02-28 05:12:00 +0800 | [diff] [blame] | 20 | #include "DebugHelper.h" |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 21 | #include "FileHandle.h" |
| 22 | #include "ScriptCached.h" |
| 23 | |
| 24 | #include <bcc/bcc_cache.h> |
| 25 | |
| 26 | #include <llvm/ADT/OwningPtr.h> |
| 27 | |
| 28 | #include <errno.h> |
| 29 | #include <sys/stat.h> |
| 30 | #include <sys/types.h> |
| 31 | |
| 32 | #include <utility> |
| 33 | #include <vector> |
| 34 | |
| 35 | #include <new> |
| 36 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 37 | #include <stdlib.h> |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 38 | #include <string.h> |
| 39 | |
| 40 | using namespace std; |
| 41 | |
| 42 | |
| 43 | namespace bcc { |
| 44 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 45 | CacheReader::~CacheReader() { |
| 46 | if (mpHeader) { free(mpHeader); } |
| 47 | if (mpCachedDependTable) { free(mpCachedDependTable); } |
| 48 | if (mpPragmaList) { free(mpPragmaList); } |
| 49 | if (mpFuncTable) { free(mpFuncTable); } |
| 50 | } |
| 51 | |
Logan | e7eb773 | 2011-01-07 07:11:56 +0800 | [diff] [blame] | 52 | ScriptCached *CacheReader::readCacheFile(FileHandle *file, Script *S) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 53 | // Check file handle |
| 54 | if (!file || file->getFD() < 0) { |
| 55 | return NULL; |
| 56 | } |
| 57 | |
Logan | a2e15af | 2011-01-07 11:46:08 +0800 | [diff] [blame] | 58 | mFile = file; |
| 59 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 60 | // Allocate ScriptCached object |
Logan | e7eb773 | 2011-01-07 07:11:56 +0800 | [diff] [blame] | 61 | mpResult.reset(new (nothrow) ScriptCached(S)); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 62 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 63 | if (!mpResult) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 64 | LOGE("Unable to allocate ScriptCached object.\n"); |
| 65 | return NULL; |
| 66 | } |
| 67 | |
| 68 | bool result = checkFileSize() |
| 69 | && readHeader() |
| 70 | && checkHeader() |
| 71 | && checkMachineIntType() |
| 72 | && checkSectionOffsetAndSize() |
| 73 | && readStringPool() |
| 74 | && checkStringPool() |
| 75 | && readDependencyTable() |
| 76 | && checkDependency() |
| 77 | && readExportVarList() |
| 78 | && readExportFuncList() |
| 79 | && readPragmaList() |
| 80 | && readFuncTable() |
Stephen Hines | 071288a | 2011-01-27 14:38:26 -0800 | [diff] [blame] | 81 | && readObjectSlotList() |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 82 | && readContext() |
| 83 | && checkContext() |
| 84 | //&& readRelocationTable() |
| 85 | //&& relocate() |
| 86 | ; |
| 87 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 88 | return result ? mpResult.take() : NULL; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | |
| 92 | bool CacheReader::checkFileSize() { |
| 93 | struct stat stfile; |
| 94 | if (fstat(mFile->getFD(), &stfile) < 0) { |
| 95 | LOGE("Unable to stat cache file.\n"); |
| 96 | return false; |
| 97 | } |
| 98 | |
| 99 | mFileSize = stfile.st_size; |
| 100 | |
| 101 | if (mFileSize < (off_t)sizeof(OBCC_Header) || |
Logan | 1dc6314 | 2011-02-25 17:14:51 +0800 | [diff] [blame] | 102 | mFileSize < (off_t)ContextManager::ContextSize) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 103 | LOGE("Cache file is too small to be correct.\n"); |
| 104 | return false; |
| 105 | } |
| 106 | |
| 107 | return true; |
| 108 | } |
| 109 | |
| 110 | |
| 111 | bool CacheReader::readHeader() { |
| 112 | if (mFile->seek(0, SEEK_SET) != 0) { |
| 113 | LOGE("Unable to seek to 0. (reason: %s)\n", strerror(errno)); |
| 114 | return false; |
| 115 | } |
| 116 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 117 | mpHeader = (OBCC_Header *)malloc(sizeof(OBCC_Header)); |
| 118 | if (!mpHeader) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 119 | LOGE("Unable to allocate for cache header.\n"); |
| 120 | return false; |
| 121 | } |
| 122 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 123 | if (mFile->read(reinterpret_cast<char *>(mpHeader), sizeof(OBCC_Header)) != |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 124 | (ssize_t)sizeof(OBCC_Header)) { |
| 125 | LOGE("Unable to read cache header.\n"); |
| 126 | return false; |
| 127 | } |
| 128 | |
Logan | a2e15af | 2011-01-07 11:46:08 +0800 | [diff] [blame] | 129 | // Dirty hack for libRS. |
| 130 | // TODO(all): This should be removed in the future. |
| 131 | if (mpHeader->libRS_threadable) { |
| 132 | mpResult->mLibRSThreadable = true; |
| 133 | } |
| 134 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 135 | return true; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | bool CacheReader::checkHeader() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 140 | if (memcmp(mpHeader->magic, OBCC_MAGIC, 4) != 0) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 141 | LOGE("Bad magic word\n"); |
| 142 | return false; |
| 143 | } |
| 144 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 145 | if (memcmp(mpHeader->version, OBCC_VERSION, 4) != 0) { |
Logan | e132399 | 2011-01-12 04:47:13 +0800 | [diff] [blame] | 146 | mpHeader->version[4 - 1] = '\0'; // ensure c-style string terminated |
Shih-wei Liao | a652665 | 2011-01-12 04:42:07 -0800 | [diff] [blame] | 147 | LOGI("Cache file format version mismatch: now %s cached %s\n", |
Logan | e132399 | 2011-01-12 04:47:13 +0800 | [diff] [blame] | 148 | OBCC_VERSION, mpHeader->version); |
| 149 | return false; |
| 150 | } |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 151 | return true; |
| 152 | } |
| 153 | |
| 154 | |
| 155 | bool CacheReader::checkMachineIntType() { |
| 156 | uint32_t number = 0x00000001; |
| 157 | |
| 158 | bool isLittleEndian = (*reinterpret_cast<char *>(&number) == 1); |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 159 | if ((isLittleEndian && mpHeader->endianness != 'e') || |
| 160 | (!isLittleEndian && mpHeader->endianness != 'E')) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 161 | LOGE("Machine endianness mismatch.\n"); |
| 162 | return false; |
| 163 | } |
| 164 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 165 | if ((unsigned int)mpHeader->sizeof_off_t != sizeof(off_t) || |
| 166 | (unsigned int)mpHeader->sizeof_size_t != sizeof(size_t) || |
| 167 | (unsigned int)mpHeader->sizeof_ptr_t != sizeof(void *)) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 168 | LOGE("Machine integer size mismatch.\n"); |
| 169 | return false; |
| 170 | } |
| 171 | |
| 172 | return true; |
| 173 | } |
| 174 | |
| 175 | |
| 176 | bool CacheReader::checkSectionOffsetAndSize() { |
| 177 | #define CHECK_SECTION_OFFSET(NAME) \ |
| 178 | do { \ |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 179 | off_t offset = mpHeader-> NAME##_offset; \ |
| 180 | off_t size = (off_t)mpHeader-> NAME##_size; \ |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 181 | \ |
| 182 | if (mFileSize < offset || mFileSize < offset + size) { \ |
| 183 | LOGE(#NAME " section overflow.\n"); \ |
| 184 | return false; \ |
| 185 | } \ |
| 186 | \ |
| 187 | if (offset % sizeof(int) != 0) { \ |
Stephen Hines | 40b7fba | 2011-03-17 19:50:20 -0700 | [diff] [blame] | 188 | LOGE(#NAME " offset must aligned to %d.\n", (int)sizeof(int)); \ |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 189 | return false; \ |
| 190 | } \ |
| 191 | \ |
| 192 | if (size < static_cast<off_t>(sizeof(size_t))) { \ |
| 193 | LOGE(#NAME " size is too small to be correct.\n"); \ |
| 194 | return false; \ |
| 195 | } \ |
| 196 | } while (0) |
| 197 | |
| 198 | CHECK_SECTION_OFFSET(str_pool); |
| 199 | CHECK_SECTION_OFFSET(depend_tab); |
Logan | a2e15af | 2011-01-07 11:46:08 +0800 | [diff] [blame] | 200 | //CHECK_SECTION_OFFSET(reloc_tab); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 201 | CHECK_SECTION_OFFSET(export_var_list); |
| 202 | CHECK_SECTION_OFFSET(export_func_list); |
| 203 | CHECK_SECTION_OFFSET(pragma_list); |
| 204 | |
| 205 | #undef CHECK_SECTION_OFFSET |
| 206 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 207 | if (mFileSize < mpHeader->context_offset || |
Logan | 1dc6314 | 2011-02-25 17:14:51 +0800 | [diff] [blame] | 208 | mFileSize < (off_t)mpHeader->context_offset + |
| 209 | (off_t)ContextManager::ContextSize) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 210 | LOGE("context section overflow.\n"); |
| 211 | return false; |
| 212 | } |
| 213 | |
| 214 | long pagesize = sysconf(_SC_PAGESIZE); |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 215 | if (mpHeader->context_offset % pagesize != 0) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 216 | LOGE("context offset must aligned to pagesize.\n"); |
| 217 | return false; |
| 218 | } |
| 219 | |
| 220 | // TODO(logan): Move this to some where else. |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 221 | if ((uintptr_t)mpHeader->context_cached_addr % pagesize != 0) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 222 | LOGE("cached address is not aligned to pagesize.\n"); |
| 223 | return false; |
| 224 | } |
| 225 | |
| 226 | return true; |
| 227 | } |
| 228 | |
| 229 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 230 | #define CACHE_READER_READ_SECTION(TYPE, AUTO_MANAGED_HOLDER, NAME) \ |
| 231 | TYPE *NAME##_raw = (TYPE *)malloc(mpHeader->NAME##_size); \ |
| 232 | \ |
| 233 | if (!NAME##_raw) { \ |
| 234 | LOGE("Unable to allocate for " #NAME "\n"); \ |
| 235 | return false; \ |
| 236 | } \ |
| 237 | \ |
| 238 | /* We have to ensure that some one will deallocate NAME##_raw */ \ |
| 239 | AUTO_MANAGED_HOLDER = NAME##_raw; \ |
| 240 | \ |
| 241 | if (mFile->seek(mpHeader->NAME##_offset, SEEK_SET) == -1) { \ |
| 242 | LOGE("Unable to seek to " #NAME " section\n"); \ |
| 243 | return false; \ |
| 244 | } \ |
| 245 | \ |
| 246 | if (mFile->read(reinterpret_cast<char *>(NAME##_raw), \ |
| 247 | mpHeader->NAME##_size) != (ssize_t)mpHeader->NAME##_size) \ |
| 248 | { \ |
| 249 | LOGE("Unable to read " #NAME ".\n"); \ |
| 250 | return false; \ |
| 251 | } |
| 252 | |
| 253 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 254 | bool CacheReader::readStringPool() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 255 | CACHE_READER_READ_SECTION(OBCC_StringPool, |
| 256 | mpResult->mpStringPoolRaw, str_pool); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 257 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 258 | char *str_base = reinterpret_cast<char *>(str_pool_raw); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 259 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 260 | vector<char const *> &pool = mpResult->mStringPool; |
| 261 | for (size_t i = 0; i < str_pool_raw->count; ++i) { |
| 262 | char *str = str_base + str_pool_raw->list[i].offset; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 263 | pool.push_back(str); |
| 264 | } |
| 265 | |
| 266 | return true; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | bool CacheReader::checkStringPool() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 271 | OBCC_StringPool *poolR = mpResult->mpStringPoolRaw; |
| 272 | vector<char const *> &pool = mpResult->mStringPool; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 273 | |
| 274 | // Ensure that every c-style string is ended with '\0' |
| 275 | for (size_t i = 0; i < poolR->count; ++i) { |
| 276 | if (pool[i][poolR->list[i].length] != '\0') { |
| 277 | LOGE("The %lu-th string does not end with '\\0'.\n", (unsigned long)i); |
| 278 | return false; |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | return true; |
| 283 | } |
| 284 | |
| 285 | |
| 286 | bool CacheReader::readDependencyTable() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 287 | CACHE_READER_READ_SECTION(OBCC_DependencyTable, mpCachedDependTable, |
| 288 | depend_tab); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 289 | return true; |
| 290 | } |
| 291 | |
| 292 | |
| 293 | bool CacheReader::checkDependency() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 294 | if (mDependencies.size() != mpCachedDependTable->count) { |
| 295 | LOGE("Dependencies count mismatch. (%lu vs %lu)\n", |
| 296 | (unsigned long)mDependencies.size(), |
| 297 | (unsigned long)mpCachedDependTable->count); |
| 298 | return false; |
| 299 | } |
| 300 | |
| 301 | vector<char const *> &strPool = mpResult->mStringPool; |
Logan | 75cc8a5 | 2011-01-07 06:06:52 +0800 | [diff] [blame] | 302 | map<string, pair<uint32_t, unsigned char const *> >::iterator dep; |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 303 | |
| 304 | dep = mDependencies.begin(); |
| 305 | for (size_t i = 0; i < mpCachedDependTable->count; ++i, ++dep) { |
| 306 | string const &depName = dep->first; |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 307 | uint32_t depType = dep->second.first; |
Logan | 75cc8a5 | 2011-01-07 06:06:52 +0800 | [diff] [blame] | 308 | unsigned char const *depSHA1 = dep->second.second; |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 309 | |
| 310 | OBCC_Dependency *depCached =&mpCachedDependTable->table[i]; |
| 311 | char const *depCachedName = strPool[depCached->res_name_strp_index]; |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 312 | uint32_t depCachedType = depCached->res_type; |
Logan | 75cc8a5 | 2011-01-07 06:06:52 +0800 | [diff] [blame] | 313 | unsigned char const *depCachedSHA1 = depCached->sha1; |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 314 | |
| 315 | if (depName != depCachedName) { |
| 316 | LOGE("Cache dependency name mismatch:\n"); |
| 317 | LOGE(" given: %s\n", depName.c_str()); |
| 318 | LOGE(" cached: %s\n", depCachedName); |
| 319 | |
| 320 | return false; |
| 321 | } |
| 322 | |
| 323 | if (memcmp(depSHA1, depCachedSHA1, 20) != 0) { |
| 324 | LOGE("Cache dependency %s sha1 mismatch:\n", depCachedName); |
| 325 | |
| 326 | #define PRINT_SHA1(PREFIX, X, POSTFIX) \ |
| 327 | LOGE(PREFIX "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" \ |
| 328 | "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" POSTFIX, \ |
| 329 | X[0], X[1], X[2], X[3], X[4], X[5], X[6], X[7], X[8], X[9], \ |
| 330 | X[10],X[11],X[12],X[13],X[14],X[15],X[16],X[17],X[18],X[19]); |
| 331 | |
| 332 | PRINT_SHA1(" given: ", depSHA1, "\n"); |
| 333 | PRINT_SHA1(" cached: ", depCachedSHA1, "\n"); |
| 334 | |
| 335 | #undef PRINT_SHA1 |
| 336 | |
| 337 | return false; |
| 338 | } |
| 339 | |
| 340 | if (depType != depCachedType) { |
| 341 | LOGE("Cache dependency %s resource type mismatch.\n", depCachedName); |
| 342 | return false; |
| 343 | } |
| 344 | } |
| 345 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 346 | return true; |
| 347 | } |
| 348 | |
| 349 | bool CacheReader::readExportVarList() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 350 | CACHE_READER_READ_SECTION(OBCC_ExportVarList, |
| 351 | mpResult->mpExportVars, export_var_list); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 352 | return true; |
| 353 | } |
| 354 | |
| 355 | |
| 356 | bool CacheReader::readExportFuncList() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 357 | CACHE_READER_READ_SECTION(OBCC_ExportFuncList, |
| 358 | mpResult->mpExportFuncs, export_func_list); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 359 | return true; |
| 360 | } |
| 361 | |
| 362 | |
| 363 | bool CacheReader::readPragmaList() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 364 | CACHE_READER_READ_SECTION(OBCC_PragmaList, mpPragmaList, pragma_list); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 365 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 366 | vector<char const *> const &strPool = mpResult->mStringPool; |
| 367 | ScriptCached::PragmaList &pragmas = mpResult->mPragmas; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 368 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 369 | for (size_t i = 0; i < pragma_list_raw->count; ++i) { |
| 370 | OBCC_Pragma *pragma = &pragma_list_raw->list[i]; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 371 | pragmas.push_back(make_pair(strPool[pragma->key_strp_index], |
| 372 | strPool[pragma->value_strp_index])); |
| 373 | } |
| 374 | |
| 375 | return true; |
| 376 | } |
| 377 | |
| 378 | |
Stephen Hines | 071288a | 2011-01-27 14:38:26 -0800 | [diff] [blame] | 379 | bool CacheReader::readObjectSlotList() { |
| 380 | CACHE_READER_READ_SECTION(OBCC_ObjectSlotList, |
| 381 | mpResult->mpObjectSlotList, object_slot_list); |
| 382 | return true; |
| 383 | } |
| 384 | |
| 385 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 386 | bool CacheReader::readFuncTable() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 387 | CACHE_READER_READ_SECTION(OBCC_FuncTable, mpFuncTable, func_table); |
| 388 | |
| 389 | vector<char const *> &strPool = mpResult->mStringPool; |
| 390 | ScriptCached::FuncTable &table = mpResult->mFunctions; |
| 391 | for (size_t i = 0; i < func_table_raw->count; ++i) { |
| 392 | OBCC_FuncInfo *func = &func_table_raw->table[i]; |
| 393 | table.insert(make_pair(strPool[func->name_strp_index], |
| 394 | make_pair(func->cached_addr, func->size))); |
| 395 | } |
| 396 | |
| 397 | return true; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 398 | } |
| 399 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 400 | #undef CACHE_READER_READ_SECTION |
| 401 | |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 402 | |
| 403 | bool CacheReader::readContext() { |
Logan | 1dc6314 | 2011-02-25 17:14:51 +0800 | [diff] [blame] | 404 | mpResult->mContext = |
| 405 | ContextManager::get().allocateContext(mpHeader->context_cached_addr, |
| 406 | mFile->getFD(), |
| 407 | mpHeader->context_offset); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 408 | |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 409 | if (!mpResult->mContext) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 410 | // Unable to allocate at cached address. Give up. |
Logan | 4259805 | 2011-01-26 22:41:13 +0800 | [diff] [blame] | 411 | mIsContextSlotNotAvail = true; |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 412 | return false; |
| 413 | |
| 414 | // TODO(logan): If relocation is fixed, we should try to allocate the |
| 415 | // code in different location, and relocate the context. |
| 416 | } |
| 417 | |
| 418 | return true; |
| 419 | } |
| 420 | |
| 421 | |
| 422 | bool CacheReader::checkContext() { |
Logan | 856ceb2 | 2011-01-07 05:21:26 +0800 | [diff] [blame] | 423 | uint32_t sum = mpHeader->context_parity_checksum; |
| 424 | uint32_t *ptr = reinterpret_cast<uint32_t *>(mpResult->mContext); |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 425 | |
Logan | 1dc6314 | 2011-02-25 17:14:51 +0800 | [diff] [blame] | 426 | for (size_t i = 0; i < ContextManager::ContextSize / sizeof(uint32_t); ++i) { |
Logan | f7f0ac5 | 2011-01-07 03:53:43 +0800 | [diff] [blame] | 427 | sum ^= *ptr++; |
| 428 | } |
| 429 | |
| 430 | if (sum != 0) { |
| 431 | LOGE("Checksum check failed\n"); |
| 432 | return false; |
| 433 | } |
| 434 | |
| 435 | LOGI("Passed checksum even parity verification.\n"); |
| 436 | return true; |
| 437 | } |
| 438 | |
| 439 | |
| 440 | bool CacheReader::readRelocationTable() { |
| 441 | // TODO(logan): Not finished. |
| 442 | return true; |
| 443 | } |
| 444 | |
| 445 | |
| 446 | bool CacheReader::relocate() { |
| 447 | // TODO(logan): Not finished. |
| 448 | return true; |
| 449 | } |
| 450 | |
| 451 | |
| 452 | } // namespace bcc |