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, bool is_critical) throw() {
249 void* p = CodeCache::allocate(size, is_critical);
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 // The parameter 'true' indicates a critical memory allocation.
281 // This means that CodeCacheMinimumFreeSpace is used, if necessary
282 blob = new (size, true) AdapterBlob(size, cb);
283 }
284 // Track memory usage statistic after releasing CodeCache_lock
285 MemoryService::track_code_cache_memory_usage();
286
287 return blob;
288 }
289
290
291 //----------------------------------------------------------------------------------------------------
292 // Implementation of MethodHandlesAdapterBlob
293
294 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
295 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
296
297 MethodHandlesAdapterBlob* blob = NULL;
298 unsigned int size = sizeof(MethodHandlesAdapterBlob);
299 // align the size to CodeEntryAlignment
300 size = align_code_offset(size);
301 size += round_to(buffer_size, oopSize);
302 {
303 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
304 // The parameter 'true' indicates a critical memory allocation.
305 // This means that CodeCacheMinimumFreeSpace is used, if necessary
306 blob = new (size, true) MethodHandlesAdapterBlob(size);
307 }
308 // Track memory usage statistic after releasing CodeCache_lock
309 MemoryService::track_code_cache_memory_usage();
310
311 return blob;
312 }
313
314
315 //----------------------------------------------------------------------------------------------------
316 // Implementation of RuntimeStub
317
318 RuntimeStub::RuntimeStub(
319 const char* name,
320 CodeBuffer* cb,
321 int size,
322 int frame_complete,
323 int frame_size,
324 OopMapSet* oop_maps,
325 bool caller_must_gc_arguments
326 )
327 : CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps)
328 {
329 _caller_must_gc_arguments = caller_must_gc_arguments;
330 }
331
332
333 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
334 CodeBuffer* cb,
335 int frame_complete,
336 int frame_size,
337 OopMapSet* oop_maps,
338 bool caller_must_gc_arguments)
339 {
340 RuntimeStub* stub = NULL;
341 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
342 {
343 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
344 unsigned int size = allocation_size(cb, sizeof(RuntimeStub));
345 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
346 }
347
348 trace_new_stub(stub, "RuntimeStub - ", stub_name);
349
350 return stub;
351 }
352
353
354 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
355 void* p = CodeCache::allocate(size, true);
356 if (!p) fatal("Initial size of CodeCache is too small");
357 return p;
358 }
359
360 // operator new shared by all singletons:
361 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
362 void* p = CodeCache::allocate(size, true);
363 if (!p) fatal("Initial size of CodeCache is too small");
364 return p;
365 }
366
367
368 //----------------------------------------------------------------------------------------------------
369 // Implementation of DeoptimizationBlob
370
371 DeoptimizationBlob::DeoptimizationBlob(
372 CodeBuffer* cb,
373 int size,
374 OopMapSet* oop_maps,
375 int unpack_offset,
376 int unpack_with_exception_offset,
377 int unpack_with_reexecution_offset,
378 int frame_size
379 )
380 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
381 {
382 _unpack_offset = unpack_offset;
383 _unpack_with_exception = unpack_with_exception_offset;
384 _unpack_with_reexecution = unpack_with_reexecution_offset;
385 #ifdef COMPILER1
386 _unpack_with_exception_in_tls = -1;
387 #endif
388 }
389
390
391 DeoptimizationBlob* DeoptimizationBlob::create(
392 CodeBuffer* cb,
393 OopMapSet* oop_maps,
394 int unpack_offset,
395 int unpack_with_exception_offset,
396 int unpack_with_reexecution_offset,
397 int frame_size)
398 {
399 DeoptimizationBlob* blob = NULL;
400 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
401 {
402 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
403 unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob));
404 blob = new (size) DeoptimizationBlob(cb,
405 size,
406 oop_maps,
407 unpack_offset,
408 unpack_with_exception_offset,
409 unpack_with_reexecution_offset,
410 frame_size);
411 }
412
413 trace_new_stub(blob, "DeoptimizationBlob");
414
415 return blob;
416 }
417
418
419 //----------------------------------------------------------------------------------------------------
420 // Implementation of UncommonTrapBlob
421
422 #ifdef COMPILER2
423 UncommonTrapBlob::UncommonTrapBlob(
424 CodeBuffer* cb,
425 int size,
426 OopMapSet* oop_maps,
427 int frame_size
428 )
429 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
430 {}
431
432
433 UncommonTrapBlob* UncommonTrapBlob::create(
434 CodeBuffer* cb,
435 OopMapSet* oop_maps,
436 int frame_size)
437 {
438 UncommonTrapBlob* blob = NULL;
439 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
440 {
441 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
442 unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob));
443 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
444 }
445
446 trace_new_stub(blob, "UncommonTrapBlob");
447
448 return blob;
449 }
450
451
452 #endif // COMPILER2
453
454
455 //----------------------------------------------------------------------------------------------------
456 // Implementation of ExceptionBlob
457
458 #ifdef COMPILER2
459 ExceptionBlob::ExceptionBlob(
460 CodeBuffer* cb,
461 int size,
462 OopMapSet* oop_maps,
463 int frame_size
464 )
465 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
466 {}
467
468
469 ExceptionBlob* ExceptionBlob::create(
470 CodeBuffer* cb,
471 OopMapSet* oop_maps,
472 int frame_size)
473 {
474 ExceptionBlob* blob = NULL;
475 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
476 {
477 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
478 unsigned int size = allocation_size(cb, sizeof(ExceptionBlob));
479 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
480 }
481
482 trace_new_stub(blob, "ExceptionBlob");
483
484 return blob;
485 }
486
487
488 #endif // COMPILER2
489
490
491 //----------------------------------------------------------------------------------------------------
492 // Implementation of SafepointBlob
493
494 SafepointBlob::SafepointBlob(
495 CodeBuffer* cb,
496 int size,
497 OopMapSet* oop_maps,
498 int frame_size
499 )
500 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
501 {}
502
503
504 SafepointBlob* SafepointBlob::create(
505 CodeBuffer* cb,
506 OopMapSet* oop_maps,
507 int frame_size)
508 {
509 SafepointBlob* blob = NULL;
510 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
511 {
512 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
513 unsigned int size = allocation_size(cb, sizeof(SafepointBlob));
514 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
515 }
516
517 trace_new_stub(blob, "SafepointBlob");
518
519 return blob;
520 }
521
522
523 //----------------------------------------------------------------------------------------------------
524 // Verification and printing
525
526 void CodeBlob::verify() {
527 ShouldNotReachHere();
528 }
529
530 void CodeBlob::print_on(outputStream* st) const {
531 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this);
532 st->print_cr("Framesize: %d", _frame_size);
533 }
534
535 void CodeBlob::print_value_on(outputStream* st) const {
536 st->print_cr("[CodeBlob]");
537 }
538
539 void BufferBlob::verify() {
540 // unimplemented
541 }
542
543 void BufferBlob::print_on(outputStream* st) const {
544 CodeBlob::print_on(st);
545 print_value_on(st);
546 }
547
548 void BufferBlob::print_value_on(outputStream* st) const {
549 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", this, name());
550 }
551
552 void RuntimeStub::verify() {
553 // unimplemented
554 }
555
556 void RuntimeStub::print_on(outputStream* st) const {
557 ttyLocker ttyl;
558 CodeBlob::print_on(st);
559 st->print("Runtime Stub (" INTPTR_FORMAT "): ", this);
560 st->print_cr(name());
561 Disassembler::decode((CodeBlob*)this, st);
562 }
563
564 void RuntimeStub::print_value_on(outputStream* st) const {
565 st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name());
566 }
567
568 void SingletonBlob::verify() {
569 // unimplemented
570 }
571
572 void SingletonBlob::print_on(outputStream* st) const {
573 ttyLocker ttyl;
574 CodeBlob::print_on(st);
575 st->print_cr(name());
576 Disassembler::decode((CodeBlob*)this, st);
577 }
578
579 void SingletonBlob::print_value_on(outputStream* st) const {
580 st->print_cr(name());
581 }
582
583 void DeoptimizationBlob::print_value_on(outputStream* st) const {
584 st->print_cr("Deoptimization (frame not available)");
585 }