| 262 | } |
| 263 | |
| 264 | bool CodeCache::makeImportsPatchable() { |
| 265 | void** min_import = (void**)-1; |
| 266 | void** max_import = NULL; |
| 267 | for (int i = 0; i < NUM_IMPORTS; i++) { |
| 268 | for (int j = 0; j < NUM_IMPORT_TYPES; j++) { |
| 269 | void** entry = _imports[i][j]; |
| 270 | if (entry == NULL) continue; |
| 271 | if (entry < min_import) min_import = entry; |
| 272 | if (entry > max_import) max_import = entry; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | if (max_import != NULL) { |
| 277 | uintptr_t patch_start = (uintptr_t)min_import & ~OS::page_mask; |
| 278 | uintptr_t patch_end = (uintptr_t)max_import & ~OS::page_mask; |
| 279 | if (OS::mprotect((void*)patch_start, patch_end - patch_start + OS::page_size, PROT_READ | PROT_WRITE) != 0) { |
| 280 | Log::warn("Could not patch %s", name()); |
| 281 | return false; |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | _imports_patchable = true; |
| 286 | return true; |
| 287 | } |
| 288 | |
| 289 | void CodeCache::setDwarfTable(FrameDesc* table, int length) { |
| 290 | _dwarf_table = table; |
nothing calls this directly
no outgoing calls
no test coverage detected