1 /* 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "code/codeBlob.hpp" 27 #include "code/codeCache.hpp" 28 #include "code/relocInfo.hpp" 29 #include "compiler/disassembler.hpp" 30 #include "interpreter/bytecode.hpp" 31 #include "memory/allocation.inline.hpp" 32 #include "memory/heap.hpp" 33 #include "oops/oop.inline.hpp" 34 #include "prims/forte.hpp" 35 #include "runtime/handles.inline.hpp" 36 #include "runtime/interfaceSupport.hpp" 37 #include "runtime/mutexLocker.hpp" 38 #include "runtime/safepoint.hpp" 39 #include "runtime/sharedRuntime.hpp" 40 #include "runtime/vframe.hpp" 41 #include "services/memoryService.hpp" 42 #ifdef TARGET_ARCH_x86 43 # include "nativeInst_x86.hpp" 44 #endif 45 #ifdef TARGET_ARCH_sparc 46 # include "nativeInst_sparc.hpp" 47 #endif 48 #ifdef TARGET_ARCH_zero 49 # include "nativeInst_zero.hpp" 50 #endif 51 #ifdef TARGET_ARCH_arm 52 # include "nativeInst_arm.hpp" 53 #endif 54 #ifdef TARGET_ARCH_ppc 55 # include "nativeInst_ppc.hpp" 56 #endif 57 #ifdef COMPILER1 58 #include "c1/c1_Runtime1.hpp" 59 #endif 60 61 unsigned int align_code_offset(int offset) { 62 // align the size to CodeEntryAlignment 63 return 64 ((offset + (int)CodeHeap::header_size() + (CodeEntryAlignment-1)) & ~(CodeEntryAlignment-1)) 65 - (int)CodeHeap::header_size(); 66 } 67 68 69 // This must be consistent with the CodeBlob constructor's layout actions. 70 unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) { 71 unsigned int size = header_size; 72 size += round_to(cb->total_relocation_size(), oopSize); 73 // align the size to CodeEntryAlignment 74 size = align_code_offset(size); 75 size += round_to(cb->total_content_size(), oopSize); 76 size += round_to(cb->total_oop_size(), oopSize); 77 size += round_to(cb->total_metadata_size(), oopSize); 78 return size; 79 } 80 81 82 // Creates a simple CodeBlob. Sets up the size of the different regions. 83 CodeBlob::CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size) { 84 assert(size == round_to(size, oopSize), "unaligned size"); 85 assert(locs_size == round_to(locs_size, oopSize), "unaligned size"); 86 assert(header_size == round_to(header_size, oopSize), "unaligned size"); 87 assert(!UseRelocIndex, "no space allocated for reloc index yet"); 88 89 // Note: If UseRelocIndex is enabled, there needs to be (at least) one 90 // extra word for the relocation information, containing the reloc 91 // index table length. Unfortunately, the reloc index table imple- 92 // mentation is not easily understandable and thus it is not clear 93 // what exactly the format is supposed to be. For now, we just turn 94 // off the use of this table (gri 7/6/2000). 95 96 _name = name; 97 _size = size; 98 _frame_complete_offset = frame_complete; 99 _header_size = header_size; 100 _relocation_size = locs_size; 101 _content_offset = align_code_offset(header_size + _relocation_size); 102 _code_offset = _content_offset; 103 _data_offset = size; 104 _frame_size = 0; 105 set_oop_maps(NULL); 106 } 107 108 109 // Creates a CodeBlob from a CodeBuffer. Sets up the size of the different regions, 110 // and copy code and relocation info. 111 CodeBlob::CodeBlob( 112 const char* name, 113 CodeBuffer* cb, 114 int header_size, 115 int size, 116 int frame_complete, 117 int frame_size, 118 OopMapSet* oop_maps 119 ) { 120 assert(size == round_to(size, oopSize), "unaligned size"); 121 assert(header_size == round_to(header_size, oopSize), "unaligned size"); 122 123 _name = name; 124 _size = size; 125 _frame_complete_offset = frame_complete; 126 _header_size = header_size; 127 _relocation_size = round_to(cb->total_relocation_size(), oopSize); 128 _content_offset = align_code_offset(header_size + _relocation_size); 129 _code_offset = _content_offset + cb->total_offset_of(cb->insts()); 130 _data_offset = _content_offset + round_to(cb->total_content_size(), oopSize); 131 assert(_data_offset <= size, "codeBlob is too small"); 132 133 cb->copy_code_and_locs_to(this); 134 set_oop_maps(oop_maps); 135 _frame_size = frame_size; 136 #ifdef COMPILER1 137 // probably wrong for tiered 138 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs"); 139 #endif // COMPILER1 140 } 141 142 143 void CodeBlob::set_oop_maps(OopMapSet* p) { 144 // Danger Will Robinson! This method allocates a big 145 // chunk of memory, its your job to free it. 146 if (p != NULL) { 147 // We need to allocate a chunk big enough to hold the OopMapSet and all of its OopMaps 148 _oop_maps = (OopMapSet* )NEW_C_HEAP_ARRAY(unsigned char, p->heap_size(), mtCode); 149 p->copy_to((address)_oop_maps); 150 } else { 151 _oop_maps = NULL; 152 } 153 } 154 155 156 void CodeBlob::trace_new_stub(CodeBlob* stub, const char* name1, const char* name2) { 157 // Do not hold the CodeCache lock during name formatting. 158 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub"); 159 160 if (stub != NULL) { 161 char stub_id[256]; 162 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), ""); 163 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2); 164 if (PrintStubCode) { 165 ttyLocker ttyl; 166 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, (intptr_t) stub); 167 Disassembler::decode(stub->code_begin(), stub->code_end()); 168 tty->cr(); 169 } 170 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end()); 171 172 if (JvmtiExport::should_post_dynamic_code_generated()) { 173 const char* stub_name = name2; 174 if (name2[0] == '\0') stub_name = name1; 175 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end()); 176 } 177 } 178 179 // Track memory usage statistic after releasing CodeCache_lock 180 MemoryService::track_code_cache_memory_usage(); 181 } 182 183 184 void CodeBlob::flush() { 185 if (_oop_maps) { 186 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps, mtCode); 187 _oop_maps = NULL; 188 } 189 _strings.free(); 190 } 191 192 193 OopMap* CodeBlob::oop_map_for_return_address(address return_address) { 194 assert(oop_maps() != NULL, "nope"); 195 return oop_maps()->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin()); 196 } 197 198 199 //---------------------------------------------------------------------------------------------------- 200 // Implementation of BufferBlob 201 202 203 BufferBlob::BufferBlob(const char* name, int size) 204 : CodeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0) 205 {} 206 207 BufferBlob* BufferBlob::create(const char* name, int buffer_size) { 208 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 209 210 BufferBlob* blob = NULL; 211 unsigned int size = sizeof(BufferBlob); 212 // align the size to CodeEntryAlignment 213 size = align_code_offset(size); 214 size += round_to(buffer_size, oopSize); 215 assert(name != NULL, "must provide a name"); 216 { 217 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 218 blob = new (size) BufferBlob(name, size); 219 } 220 // Track memory usage statistic after releasing CodeCache_lock 221 MemoryService::track_code_cache_memory_usage(); 222 223 return blob; 224 } 225 226 227 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb) 228 : CodeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL) 229 {} 230 231 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) { 232 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 233 234 BufferBlob* blob = NULL; 235 unsigned int size = allocation_size(cb, sizeof(BufferBlob)); 236 assert(name != NULL, "must provide a name"); 237 { 238 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 239 blob = new (size) BufferBlob(name, size, cb); 240 } 241 // Track memory usage statistic after releasing CodeCache_lock 242 MemoryService::track_code_cache_memory_usage(); 243 244 return blob; 245 } 246 247 248 void* BufferBlob::operator new(size_t s, unsigned size) throw() { 249 void* p = CodeCache::allocate(size); 250 return p; 251 } 252 253 254 void BufferBlob::free( BufferBlob *blob ) { 255 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 256 { 257 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 258 CodeCache::free((CodeBlob*)blob); 259 } 260 // Track memory usage statistic after releasing CodeCache_lock 261 MemoryService::track_code_cache_memory_usage(); 262 } 263 264 265 //---------------------------------------------------------------------------------------------------- 266 // Implementation of AdapterBlob 267 268 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) : 269 BufferBlob("I2C/C2I adapters", size, cb) { 270 CodeCache::commit(this); 271 } 272 273 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) { 274 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 275 276 AdapterBlob* blob = NULL; 277 unsigned int size = allocation_size(cb, sizeof(AdapterBlob)); 278 { 279 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 280 blob = new (size) AdapterBlob(size, cb); 281 } 282 // Track memory usage statistic after releasing CodeCache_lock 283 MemoryService::track_code_cache_memory_usage(); 284 285 return blob; 286 } 287 288 289 //---------------------------------------------------------------------------------------------------- 290 // Implementation of MethodHandlesAdapterBlob 291 292 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) { 293 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 294 295 MethodHandlesAdapterBlob* blob = NULL; 296 unsigned int size = sizeof(MethodHandlesAdapterBlob); 297 // align the size to CodeEntryAlignment 298 size = align_code_offset(size); 299 size += round_to(buffer_size, oopSize); 300 { 301 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 302 blob = new (size) MethodHandlesAdapterBlob(size); 303 } 304 // Track memory usage statistic after releasing CodeCache_lock 305 MemoryService::track_code_cache_memory_usage(); 306 307 return blob; 308 } 309 310 311 //---------------------------------------------------------------------------------------------------- 312 // Implementation of RuntimeStub 313 314 RuntimeStub::RuntimeStub( 315 const char* name, 316 CodeBuffer* cb, 317 int size, 318 int frame_complete, 319 int frame_size, 320 OopMapSet* oop_maps, 321 bool caller_must_gc_arguments 322 ) 323 : CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps) 324 { 325 _caller_must_gc_arguments = caller_must_gc_arguments; 326 } 327 328 329 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name, 330 CodeBuffer* cb, 331 int frame_complete, 332 int frame_size, 333 OopMapSet* oop_maps, 334 bool caller_must_gc_arguments) 335 { 336 RuntimeStub* stub = NULL; 337 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 338 { 339 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 340 unsigned int size = allocation_size(cb, sizeof(RuntimeStub)); 341 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments); 342 } 343 344 trace_new_stub(stub, "RuntimeStub - ", stub_name); 345 346 return stub; 347 } 348 349 350 void* RuntimeStub::operator new(size_t s, unsigned size) throw() { 351 void* p = CodeCache::allocate(size, true); 352 if (!p) fatal("Initial size of CodeCache is too small"); 353 return p; 354 } 355 356 // operator new shared by all singletons: 357 void* SingletonBlob::operator new(size_t s, unsigned size) throw() { 358 void* p = CodeCache::allocate(size, true); 359 if (!p) fatal("Initial size of CodeCache is too small"); 360 return p; 361 } 362 363 364 //---------------------------------------------------------------------------------------------------- 365 // Implementation of DeoptimizationBlob 366 367 DeoptimizationBlob::DeoptimizationBlob( 368 CodeBuffer* cb, 369 int size, 370 OopMapSet* oop_maps, 371 int unpack_offset, 372 int unpack_with_exception_offset, 373 int unpack_with_reexecution_offset, 374 int frame_size 375 ) 376 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps) 377 { 378 _unpack_offset = unpack_offset; 379 _unpack_with_exception = unpack_with_exception_offset; 380 _unpack_with_reexecution = unpack_with_reexecution_offset; 381 #ifdef COMPILER1 382 _unpack_with_exception_in_tls = -1; 383 #endif 384 } 385 386 387 DeoptimizationBlob* DeoptimizationBlob::create( 388 CodeBuffer* cb, 389 OopMapSet* oop_maps, 390 int unpack_offset, 391 int unpack_with_exception_offset, 392 int unpack_with_reexecution_offset, 393 int frame_size) 394 { 395 DeoptimizationBlob* blob = NULL; 396 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 397 { 398 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 399 unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob)); 400 blob = new (size) DeoptimizationBlob(cb, 401 size, 402 oop_maps, 403 unpack_offset, 404 unpack_with_exception_offset, 405 unpack_with_reexecution_offset, 406 frame_size); 407 } 408 409 trace_new_stub(blob, "DeoptimizationBlob"); 410 411 return blob; 412 } 413 414 415 //---------------------------------------------------------------------------------------------------- 416 // Implementation of UncommonTrapBlob 417 418 #ifdef COMPILER2 419 UncommonTrapBlob::UncommonTrapBlob( 420 CodeBuffer* cb, 421 int size, 422 OopMapSet* oop_maps, 423 int frame_size 424 ) 425 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps) 426 {} 427 428 429 UncommonTrapBlob* UncommonTrapBlob::create( 430 CodeBuffer* cb, 431 OopMapSet* oop_maps, 432 int frame_size) 433 { 434 UncommonTrapBlob* blob = NULL; 435 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 436 { 437 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 438 unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob)); 439 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size); 440 } 441 442 trace_new_stub(blob, "UncommonTrapBlob"); 443 444 return blob; 445 } 446 447 448 #endif // COMPILER2 449 450 451 //---------------------------------------------------------------------------------------------------- 452 // Implementation of ExceptionBlob 453 454 #ifdef COMPILER2 455 ExceptionBlob::ExceptionBlob( 456 CodeBuffer* cb, 457 int size, 458 OopMapSet* oop_maps, 459 int frame_size 460 ) 461 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps) 462 {} 463 464 465 ExceptionBlob* ExceptionBlob::create( 466 CodeBuffer* cb, 467 OopMapSet* oop_maps, 468 int frame_size) 469 { 470 ExceptionBlob* blob = NULL; 471 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 472 { 473 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 474 unsigned int size = allocation_size(cb, sizeof(ExceptionBlob)); 475 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size); 476 } 477 478 trace_new_stub(blob, "ExceptionBlob"); 479 480 return blob; 481 } 482 483 484 #endif // COMPILER2 485 486 487 //---------------------------------------------------------------------------------------------------- 488 // Implementation of SafepointBlob 489 490 SafepointBlob::SafepointBlob( 491 CodeBuffer* cb, 492 int size, 493 OopMapSet* oop_maps, 494 int frame_size 495 ) 496 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps) 497 {} 498 499 500 SafepointBlob* SafepointBlob::create( 501 CodeBuffer* cb, 502 OopMapSet* oop_maps, 503 int frame_size) 504 { 505 SafepointBlob* blob = NULL; 506 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock 507 { 508 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 509 unsigned int size = allocation_size(cb, sizeof(SafepointBlob)); 510 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size); 511 } 512 513 trace_new_stub(blob, "SafepointBlob"); 514 515 return blob; 516 } 517 518 519 //---------------------------------------------------------------------------------------------------- 520 // Verification and printing 521 522 void CodeBlob::verify() { 523 ShouldNotReachHere(); 524 } 525 526 void CodeBlob::print_on(outputStream* st) const { 527 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this); 528 st->print_cr("Framesize: %d", _frame_size); 529 } 530 531 void CodeBlob::print_value_on(outputStream* st) const { 532 st->print_cr("[CodeBlob]"); 533 } 534 535 void BufferBlob::verify() { 536 // unimplemented 537 } 538 539 void BufferBlob::print_on(outputStream* st) const { 540 CodeBlob::print_on(st); 541 print_value_on(st); 542 } 543 544 void BufferBlob::print_value_on(outputStream* st) const { 545 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", this, name()); 546 } 547 548 void RuntimeStub::verify() { 549 // unimplemented 550 } 551 552 void RuntimeStub::print_on(outputStream* st) const { 553 ttyLocker ttyl; 554 CodeBlob::print_on(st); 555 st->print("Runtime Stub (" INTPTR_FORMAT "): ", this); 556 st->print_cr(name()); 557 Disassembler::decode((CodeBlob*)this, st); 558 } 559 560 void RuntimeStub::print_value_on(outputStream* st) const { 561 st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name()); 562 } 563 564 void SingletonBlob::verify() { 565 // unimplemented 566 } 567 568 void SingletonBlob::print_on(outputStream* st) const { 569 ttyLocker ttyl; 570 CodeBlob::print_on(st); 571 st->print_cr(name()); 572 Disassembler::decode((CodeBlob*)this, st); 573 } 574 575 void SingletonBlob::print_value_on(outputStream* st) const { 576 st->print_cr(name()); 577 } 578 579 void DeoptimizationBlob::print_value_on(outputStream* st) const { 580 st->print_cr("Deoptimization (frame not available)"); 581 }