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 void* BufferBlob::operator new(size_t s, unsigned size) throw() {
248 return CodeCache::allocate(size, CodeBlobType::NonMethod);
249 }
250
251 void BufferBlob::free(BufferBlob *blob) {
252 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
253 {
254 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
255 CodeCache::free((CodeBlob*)blob, CodeBlobType::NonMethod);
256 }
257 // Track memory usage statistic after releasing CodeCache_lock
258 MemoryService::track_code_cache_memory_usage();
259 }
260
261
262 //----------------------------------------------------------------------------------------------------
263 // Implementation of AdapterBlob
264
265 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) :
266 BufferBlob("I2C/C2I adapters", size, cb) {
267 CodeCache::commit(this);
268 }
269
270 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
271 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
272
273 AdapterBlob* blob = NULL;
274 unsigned int size = allocation_size(cb, sizeof(AdapterBlob));
275 {
276 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
277 blob = new (size) AdapterBlob(size, cb);
278 }
279 // Track memory usage statistic after releasing CodeCache_lock
280 MemoryService::track_code_cache_memory_usage();
281
282 return blob;
283 }
284
285
286 //----------------------------------------------------------------------------------------------------
287 // Implementation of MethodHandlesAdapterBlob
288
289 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
290 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
291
292 MethodHandlesAdapterBlob* blob = NULL;
293 unsigned int size = sizeof(MethodHandlesAdapterBlob);
294 // align the size to CodeEntryAlignment
295 size = align_code_offset(size);
296 size += round_to(buffer_size, oopSize);
297 {
298 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
299 blob = new (size) MethodHandlesAdapterBlob(size);
300 }
301 // Track memory usage statistic after releasing CodeCache_lock
302 MemoryService::track_code_cache_memory_usage();
303
304 return blob;
305 }
306
307 //----------------------------------------------------------------------------------------------------
308 // Implementation of RuntimeStub
309
310 RuntimeStub::RuntimeStub(
311 const char* name,
312 CodeBuffer* cb,
313 int size,
314 int frame_complete,
315 int frame_size,
316 OopMapSet* oop_maps,
317 bool caller_must_gc_arguments
318 )
319 : CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps)
320 {
321 _caller_must_gc_arguments = caller_must_gc_arguments;
322 }
323
324
325 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
326 CodeBuffer* cb,
327 int frame_complete,
328 int frame_size,
329 OopMapSet* oop_maps,
330 bool caller_must_gc_arguments)
331 {
332 RuntimeStub* stub = NULL;
333 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
334 {
335 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
336 unsigned int size = allocation_size(cb, sizeof(RuntimeStub));
337 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
338 }
339
340 trace_new_stub(stub, "RuntimeStub - ", stub_name);
341
342 return stub;
343 }
344
345
346 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
347 void* p = CodeCache::allocate(size, CodeBlobType::NonMethod, true);
348 if (!p) fatal("Initial size of CodeCache is too small");
349 return p;
350 }
351
352 // operator new shared by all singletons:
353 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
354 void* p = CodeCache::allocate(size, CodeBlobType::NonMethod, true);
355 if (!p) fatal("Initial size of CodeCache is too small");
356 return p;
357 }
358
359
360 //----------------------------------------------------------------------------------------------------
361 // Implementation of DeoptimizationBlob
362
363 DeoptimizationBlob::DeoptimizationBlob(
364 CodeBuffer* cb,
365 int size,
366 OopMapSet* oop_maps,
367 int unpack_offset,
368 int unpack_with_exception_offset,
369 int unpack_with_reexecution_offset,
370 int frame_size
371 )
372 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
373 {
374 _unpack_offset = unpack_offset;
375 _unpack_with_exception = unpack_with_exception_offset;
376 _unpack_with_reexecution = unpack_with_reexecution_offset;
377 #ifdef COMPILER1
378 _unpack_with_exception_in_tls = -1;
379 #endif
380 }
381
382
383 DeoptimizationBlob* DeoptimizationBlob::create(
384 CodeBuffer* cb,
385 OopMapSet* oop_maps,
386 int unpack_offset,
387 int unpack_with_exception_offset,
388 int unpack_with_reexecution_offset,
389 int frame_size)
390 {
391 DeoptimizationBlob* blob = NULL;
392 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
393 {
394 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
395 unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob));
396 blob = new (size) DeoptimizationBlob(cb,
397 size,
398 oop_maps,
399 unpack_offset,
400 unpack_with_exception_offset,
401 unpack_with_reexecution_offset,
402 frame_size);
403 }
404
405 trace_new_stub(blob, "DeoptimizationBlob");
406
407 return blob;
408 }
409
410
411 //----------------------------------------------------------------------------------------------------
412 // Implementation of UncommonTrapBlob
413
414 #ifdef COMPILER2
415 UncommonTrapBlob::UncommonTrapBlob(
416 CodeBuffer* cb,
417 int size,
418 OopMapSet* oop_maps,
419 int frame_size
420 )
421 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
422 {}
423
424
425 UncommonTrapBlob* UncommonTrapBlob::create(
426 CodeBuffer* cb,
427 OopMapSet* oop_maps,
428 int frame_size)
429 {
430 UncommonTrapBlob* blob = NULL;
431 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
432 {
433 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
434 unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob));
435 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
436 }
437
438 trace_new_stub(blob, "UncommonTrapBlob");
439
440 return blob;
441 }
442
443
444 #endif // COMPILER2
445
446
447 //----------------------------------------------------------------------------------------------------
448 // Implementation of ExceptionBlob
449
450 #ifdef COMPILER2
451 ExceptionBlob::ExceptionBlob(
452 CodeBuffer* cb,
453 int size,
454 OopMapSet* oop_maps,
455 int frame_size
456 )
457 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
458 {}
459
460
461 ExceptionBlob* ExceptionBlob::create(
462 CodeBuffer* cb,
463 OopMapSet* oop_maps,
464 int frame_size)
465 {
466 ExceptionBlob* blob = NULL;
467 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
468 {
469 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
470 unsigned int size = allocation_size(cb, sizeof(ExceptionBlob));
471 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
472 }
473
474 trace_new_stub(blob, "ExceptionBlob");
475
476 return blob;
477 }
478
479
480 #endif // COMPILER2
481
482
483 //----------------------------------------------------------------------------------------------------
484 // Implementation of SafepointBlob
485
486 SafepointBlob::SafepointBlob(
487 CodeBuffer* cb,
488 int size,
489 OopMapSet* oop_maps,
490 int frame_size
491 )
492 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
493 {}
494
495
496 SafepointBlob* SafepointBlob::create(
497 CodeBuffer* cb,
498 OopMapSet* oop_maps,
499 int frame_size)
500 {
501 SafepointBlob* blob = NULL;
502 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
503 {
504 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
505 unsigned int size = allocation_size(cb, sizeof(SafepointBlob));
506 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
507 }
508
509 trace_new_stub(blob, "SafepointBlob");
510
511 return blob;
512 }
513
514
515 //----------------------------------------------------------------------------------------------------
516 // Verification and printing
517
518 void CodeBlob::verify() {
519 ShouldNotReachHere();
520 }
521
522 void CodeBlob::print_on(outputStream* st) const {
523 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this);
524 st->print_cr("Framesize: %d", _frame_size);
525 }
526
527 void CodeBlob::print_value_on(outputStream* st) const {
528 st->print_cr("[CodeBlob]");
529 }
530
531 void BufferBlob::verify() {
532 // unimplemented
533 }
534
535 void BufferBlob::print_on(outputStream* st) const {
536 CodeBlob::print_on(st);
537 print_value_on(st);
538 }
539
540 void BufferBlob::print_value_on(outputStream* st) const {
541 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", this, name());
542 }
543
544 void RuntimeStub::verify() {
545 // unimplemented
546 }
547
548 void RuntimeStub::print_on(outputStream* st) const {
549 ttyLocker ttyl;
550 CodeBlob::print_on(st);
551 st->print("Runtime Stub (" INTPTR_FORMAT "): ", this);
552 st->print_cr(name());
553 Disassembler::decode((CodeBlob*)this, st);
554 }
555
556 void RuntimeStub::print_value_on(outputStream* st) const {
557 st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name());
558 }
559
560 void SingletonBlob::verify() {
561 // unimplemented
562 }
563
564 void SingletonBlob::print_on(outputStream* st) const {
565 ttyLocker ttyl;
566 CodeBlob::print_on(st);
567 st->print_cr(name());
568 Disassembler::decode((CodeBlob*)this, st);
569 }
570
571 void SingletonBlob::print_value_on(outputStream* st) const {
572 st->print_cr(name());
573 }
574
575 void DeoptimizationBlob::print_value_on(outputStream* st) const {
576 st->print_cr("Deoptimization (frame not available)");
577 }