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 "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/connode.hpp"
52 #include "opto/graphKit.hpp"
53 #include "opto/machnode.hpp"
54 #include "opto/matcher.hpp"
55 #include "opto/memnode.hpp"
56 #include "opto/mulnode.hpp"
57 #include "opto/runtime.hpp"
58 #include "opto/subnode.hpp"
59 #include "runtime/fprofiler.hpp"
60 #include "runtime/handles.inline.hpp"
61 #include "runtime/interfaceSupport.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/signature.hpp"
65 #include "runtime/threadCritical.hpp"
66 #include "runtime/vframe.hpp"
67 #include "runtime/vframeArray.hpp"
68 #include "runtime/vframe_hp.hpp"
69 #include "utilities/copy.hpp"
70 #include "utilities/preserveException.hpp"
71 #ifdef TARGET_ARCH_MODEL_x86_32
72 # include "adfiles/ad_x86_32.hpp"
73 #endif
74 #ifdef TARGET_ARCH_MODEL_x86_64
75 # include "adfiles/ad_x86_64.hpp"
76 #endif
77 #ifdef TARGET_ARCH_MODEL_sparc
78 # include "adfiles/ad_sparc.hpp"
79 #endif
80 #ifdef TARGET_ARCH_MODEL_zero
81 # include "adfiles/ad_zero.hpp"
82 #endif
83 #ifdef TARGET_ARCH_MODEL_arm
84 # include "adfiles/ad_arm.hpp"
85 #endif
86 #ifdef TARGET_ARCH_MODEL_ppc
87 # include "adfiles/ad_ppc.hpp"
88 #endif
89
90
91 // For debugging purposes:
92 // To force FullGCALot inside a runtime function, add the following two lines
93 //
94 // Universe::release_fullgc_alot_dummy();
95 // MarkSweep::invoke(0, "Debugging");
96 //
97 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
98
99
100
101
102 // Compiled code entry points
103 address OptoRuntime::_new_instance_Java = NULL;
104 address OptoRuntime::_new_array_Java = NULL;
105 address OptoRuntime::_new_array_nozero_Java = NULL;
106 address OptoRuntime::_multianewarray2_Java = NULL;
107 address OptoRuntime::_multianewarray3_Java = NULL;
108 address OptoRuntime::_multianewarray4_Java = NULL;
109 address OptoRuntime::_multianewarray5_Java = NULL;
110 address OptoRuntime::_multianewarrayN_Java = NULL;
111 address OptoRuntime::_g1_wb_pre_Java = NULL;
112 address OptoRuntime::_g1_wb_post_Java = NULL;
113 address OptoRuntime::_vtable_must_compile_Java = NULL;
114 address OptoRuntime::_complete_monitor_locking_Java = NULL;
115 address OptoRuntime::_rethrow_Java = NULL;
116
117 address OptoRuntime::_slow_arraycopy_Java = NULL;
118 address OptoRuntime::_register_finalizer_Java = NULL;
119
120 # ifdef ENABLE_ZAP_DEAD_LOCALS
121 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
122 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
123 # endif
124
125 ExceptionBlob* OptoRuntime::_exception_blob;
126
127 // This should be called in an assertion at the start of OptoRuntime routines
128 // which are entered from compiled code (all of them)
129 #ifdef ASSERT
130 static bool check_compiled_frame(JavaThread* thread) {
131 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
132 RegisterMap map(thread, false);
133 frame caller = thread->last_frame().sender(&map);
134 assert(caller.is_compiled_frame(), "not being called from compiled like code");
135 return true;
136 }
137 #endif // ASSERT
138
139
140 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
141 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \
142 if (var == NULL) { return false; }
143
144 bool OptoRuntime::generate(ciEnv* env) {
145
146 generate_exception_blob();
147
148 // Note: tls: Means fetching the return oop out of the thread-local storage
149 //
150 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
151 // -------------------------------------------------------------------------------------------------------------------------------
152 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
153 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
154 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false);
155 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
156 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
157 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
158 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
159 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false);
160 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
161 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
162 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false);
163 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
164
165 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
166 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
167
168 # ifdef ENABLE_ZAP_DEAD_LOCALS
169 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
170 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
171 # endif
172 return true;
173 }
174
175 #undef gen
176
177
178 // Helper method to do generation of RunTimeStub's
179 address OptoRuntime::generate_stub( ciEnv* env,
180 TypeFunc_generator gen, address C_function,
181 const char *name, int is_fancy_jump,
182 bool pass_tls,
183 bool save_argument_registers,
184 bool return_pc ) {
185 ResourceMark rm;
186 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
187 return C.stub_entry_point();
188 }
189
190 const char* OptoRuntime::stub_name(address entry) {
191 #ifndef PRODUCT
192 CodeBlob* cb = CodeCache::find_blob(entry);
193 RuntimeStub* rs =(RuntimeStub *)cb;
194 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
195 return rs->name();
196 #else
197 // Fast implementation for product mode (maybe it should be inlined too)
198 return "runtime stub";
199 #endif
200 }
201
202
203 //=============================================================================
204 // Opto compiler runtime routines
205 //=============================================================================
206
207
208 //=============================allocation======================================
209 // We failed the fast-path allocation. Now we need to do a scavenge or GC
210 // and try allocation again.
211
212 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
213 // After any safepoint, just before going back to compiled code,
214 // we inform the GC that we will be doing initializing writes to
215 // this object in the future without emitting card-marks, so
216 // GC may take any compensating steps.
217 // NOTE: Keep this code consistent with GraphKit::store_barrier.
218
219 oop new_obj = thread->vm_result();
220 if (new_obj == NULL) return;
221
222 assert(Universe::heap()->can_elide_tlab_store_barriers(),
223 "compiler must check this first");
224 // GC may decide to give back a safer copy of new_obj.
225 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
226 thread->set_vm_result(new_obj);
227 }
228
229 // object allocation
230 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))
231 JRT_BLOCK;
232 #ifndef PRODUCT
233 SharedRuntime::_new_instance_ctr++; // new instance requires GC
234 #endif
235 assert(check_compiled_frame(thread), "incorrect caller");
236
237 // These checks are cheap to make and support reflective allocation.
238 int lh = klass->layout_helper();
239 if (Klass::layout_helper_needs_slow_path(lh)
240 || !InstanceKlass::cast(klass)->is_initialized()) {
241 KlassHandle kh(THREAD, klass);
242 kh->check_valid_for_instantiation(false, THREAD);
243 if (!HAS_PENDING_EXCEPTION) {
244 InstanceKlass::cast(kh())->initialize(THREAD);
245 }
246 if (!HAS_PENDING_EXCEPTION) {
247 klass = kh();
248 } else {
249 klass = NULL;
250 }
251 }
252
253 if (klass != NULL) {
254 // Scavenge and allocate an instance.
255 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
256 thread->set_vm_result(result);
257
258 // Pass oops back through thread local storage. Our apparent type to Java
259 // is that we return an oop, but we can block on exit from this routine and
260 // a GC can trash the oop in C's return register. The generated stub will
261 // fetch the oop from TLS after any possible GC.
262 }
263
264 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
265 JRT_BLOCK_END;
266
267 if (GraphKit::use_ReduceInitialCardMarks()) {
268 // inform GC that we won't do card marks for initializing writes.
269 new_store_pre_barrier(thread);
270 }
271 JRT_END
272
273
274 // array allocation
275 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))
276 JRT_BLOCK;
277 #ifndef PRODUCT
278 SharedRuntime::_new_array_ctr++; // new array requires GC
279 #endif
280 assert(check_compiled_frame(thread), "incorrect caller");
281
282 // Scavenge and allocate an instance.
283 oop result;
284
285 if (array_type->oop_is_typeArray()) {
286 // The oopFactory likes to work with the element type.
287 // (We could bypass the oopFactory, since it doesn't add much value.)
288 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
289 result = oopFactory::new_typeArray(elem_type, len, THREAD);
290 } else {
291 // Although the oopFactory likes to work with the elem_type,
292 // the compiler prefers the array_type, since it must already have
293 // that latter value in hand for the fast path.
294 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
295 result = oopFactory::new_objArray(elem_type, len, THREAD);
296 }
297
298 // Pass oops back through thread local storage. Our apparent type to Java
299 // is that we return an oop, but we can block on exit from this routine and
300 // a GC can trash the oop in C's return register. The generated stub will
301 // fetch the oop from TLS after any possible GC.
302 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
303 thread->set_vm_result(result);
304 JRT_BLOCK_END;
305
306 if (GraphKit::use_ReduceInitialCardMarks()) {
307 // inform GC that we won't do card marks for initializing writes.
308 new_store_pre_barrier(thread);
309 }
310 JRT_END
311
312 // array allocation without zeroing
313 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))
314 JRT_BLOCK;
315 #ifndef PRODUCT
316 SharedRuntime::_new_array_ctr++; // new array requires GC
317 #endif
318 assert(check_compiled_frame(thread), "incorrect caller");
319
320 // Scavenge and allocate an instance.
321 oop result;
322
323 assert(array_type->oop_is_typeArray(), "should be called only for type array");
324 // The oopFactory likes to work with the element type.
325 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
326 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
327
328 // Pass oops back through thread local storage. Our apparent type to Java
329 // is that we return an oop, but we can block on exit from this routine and
330 // a GC can trash the oop in C's return register. The generated stub will
331 // fetch the oop from TLS after any possible GC.
332 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
333 thread->set_vm_result(result);
334 JRT_BLOCK_END;
335
336 if (GraphKit::use_ReduceInitialCardMarks()) {
337 // inform GC that we won't do card marks for initializing writes.
338 new_store_pre_barrier(thread);
339 }
340
341 oop result = thread->vm_result();
342 if ((len > 0) && (result != NULL) &&
343 is_deoptimized_caller_frame(thread)) {
344 // Zero array here if the caller is deoptimized.
345 int size = ((typeArrayOop)result)->object_size();
346 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
347 const size_t hs = arrayOopDesc::header_size(elem_type);
348 // Align to next 8 bytes to avoid trashing arrays's length.
349 const size_t aligned_hs = align_object_offset(hs);
350 HeapWord* obj = (HeapWord*)result;
351 if (aligned_hs > hs) {
352 Copy::zero_to_words(obj+hs, aligned_hs-hs);
353 }
354 // Optimized zeroing.
355 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
356 }
357
358 JRT_END
359
360 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
361
362 // multianewarray for 2 dimensions
363 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))
364 #ifndef PRODUCT
365 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
366 #endif
367 assert(check_compiled_frame(thread), "incorrect caller");
368 assert(elem_type->is_klass(), "not a class");
369 jint dims[2];
370 dims[0] = len1;
371 dims[1] = len2;
372 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
373 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
374 thread->set_vm_result(obj);
375 JRT_END
376
377 // multianewarray for 3 dimensions
378 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))
379 #ifndef PRODUCT
380 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
381 #endif
382 assert(check_compiled_frame(thread), "incorrect caller");
383 assert(elem_type->is_klass(), "not a class");
384 jint dims[3];
385 dims[0] = len1;
386 dims[1] = len2;
387 dims[2] = len3;
388 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
389 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
390 thread->set_vm_result(obj);
391 JRT_END
392
393 // multianewarray for 4 dimensions
394 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
395 #ifndef PRODUCT
396 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
397 #endif
398 assert(check_compiled_frame(thread), "incorrect caller");
399 assert(elem_type->is_klass(), "not a class");
400 jint dims[4];
401 dims[0] = len1;
402 dims[1] = len2;
403 dims[2] = len3;
404 dims[3] = len4;
405 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
406 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
407 thread->set_vm_result(obj);
408 JRT_END
409
410 // multianewarray for 5 dimensions
411 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
412 #ifndef PRODUCT
413 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
414 #endif
415 assert(check_compiled_frame(thread), "incorrect caller");
416 assert(elem_type->is_klass(), "not a class");
417 jint dims[5];
418 dims[0] = len1;
419 dims[1] = len2;
420 dims[2] = len3;
421 dims[3] = len4;
422 dims[4] = len5;
423 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
424 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
425 thread->set_vm_result(obj);
426 JRT_END
427
428 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))
429 assert(check_compiled_frame(thread), "incorrect caller");
430 assert(elem_type->is_klass(), "not a class");
431 assert(oop(dims)->is_typeArray(), "not an array");
432
433 ResourceMark rm;
434 jint len = dims->length();
435 assert(len > 0, "Dimensions array should contain data");
436 jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
437 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
438 Copy::conjoint_jints_atomic(j_dims, c_dims, len);
439
440 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
441 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
442 thread->set_vm_result(obj);
443 JRT_END
444
445
446 const TypeFunc *OptoRuntime::new_instance_Type() {
447 // create input type (domain)
448 const Type **fields = TypeTuple::fields(1);
449 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
450 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
451
452 // create result type (range)
453 fields = TypeTuple::fields(1);
454 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
455
456 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
457
458 return TypeFunc::make(domain, range);
459 }
460
461
462 const TypeFunc *OptoRuntime::athrow_Type() {
463 // create input type (domain)
464 const Type **fields = TypeTuple::fields(1);
465 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
466 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
467
468 // create result type (range)
469 fields = TypeTuple::fields(0);
470
471 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
472
473 return TypeFunc::make(domain, range);
474 }
475
476
477 const TypeFunc *OptoRuntime::new_array_Type() {
478 // create input type (domain)
479 const Type **fields = TypeTuple::fields(2);
480 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
481 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
482 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
483
484 // create result type (range)
485 fields = TypeTuple::fields(1);
486 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
487
488 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
489
490 return TypeFunc::make(domain, range);
491 }
492
493 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
494 // create input type (domain)
495 const int nargs = ndim + 1;
496 const Type **fields = TypeTuple::fields(nargs);
497 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
498 for( int i = 1; i < nargs; i++ )
499 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
500 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
501
502 // create result type (range)
503 fields = TypeTuple::fields(1);
504 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
505 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
506
507 return TypeFunc::make(domain, range);
508 }
509
510 const TypeFunc *OptoRuntime::multianewarray2_Type() {
511 return multianewarray_Type(2);
512 }
513
514 const TypeFunc *OptoRuntime::multianewarray3_Type() {
515 return multianewarray_Type(3);
516 }
517
518 const TypeFunc *OptoRuntime::multianewarray4_Type() {
519 return multianewarray_Type(4);
520 }
521
522 const TypeFunc *OptoRuntime::multianewarray5_Type() {
523 return multianewarray_Type(5);
524 }
525
526 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
527 // create input type (domain)
528 const Type **fields = TypeTuple::fields(2);
529 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
530 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes
531 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
532
533 // create result type (range)
534 fields = TypeTuple::fields(1);
535 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
536 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
537
538 return TypeFunc::make(domain, range);
539 }
540
541 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
542 const Type **fields = TypeTuple::fields(2);
543 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
544 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
545 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
546
547 // create result type (range)
548 fields = TypeTuple::fields(0);
549 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
550
551 return TypeFunc::make(domain, range);
552 }
553
554 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
555
556 const Type **fields = TypeTuple::fields(2);
557 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
558 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
559 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
560
561 // create result type (range)
562 fields = TypeTuple::fields(0);
563 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
564
565 return TypeFunc::make(domain, range);
566 }
567
568 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
569 // create input type (domain)
570 const Type **fields = TypeTuple::fields(1);
571 // Symbol* name of class to be loaded
572 fields[TypeFunc::Parms+0] = TypeInt::INT;
573 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
574
575 // create result type (range)
576 fields = TypeTuple::fields(0);
577 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
578
579 return TypeFunc::make(domain, range);
580 }
581
582 # ifdef ENABLE_ZAP_DEAD_LOCALS
583 // Type used for stub generation for zap_dead_locals.
584 // No inputs or outputs
585 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
586 // create input type (domain)
587 const Type **fields = TypeTuple::fields(0);
588 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
589
590 // create result type (range)
591 fields = TypeTuple::fields(0);
592 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
593
594 return TypeFunc::make(domain,range);
595 }
596 # endif
597
598
599 //-----------------------------------------------------------------------------
600 // Monitor Handling
601 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
602 // create input type (domain)
603 const Type **fields = TypeTuple::fields(2);
604 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
605 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
606 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
607
608 // create result type (range)
609 fields = TypeTuple::fields(0);
610
611 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
612
613 return TypeFunc::make(domain,range);
614 }
615
616
617 //-----------------------------------------------------------------------------
618 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
619 // create input type (domain)
620 const Type **fields = TypeTuple::fields(2);
621 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
622 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
623 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
624
625 // create result type (range)
626 fields = TypeTuple::fields(0);
627
628 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
629
630 return TypeFunc::make(domain,range);
631 }
632
633 const TypeFunc* OptoRuntime::flush_windows_Type() {
634 // create input type (domain)
635 const Type** fields = TypeTuple::fields(1);
636 fields[TypeFunc::Parms+0] = NULL; // void
637 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
638
639 // create result type
640 fields = TypeTuple::fields(1);
641 fields[TypeFunc::Parms+0] = NULL; // void
642 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
643
644 return TypeFunc::make(domain, range);
645 }
646
647 const TypeFunc* OptoRuntime::l2f_Type() {
648 // create input type (domain)
649 const Type **fields = TypeTuple::fields(2);
650 fields[TypeFunc::Parms+0] = TypeLong::LONG;
651 fields[TypeFunc::Parms+1] = Type::HALF;
652 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
653
654 // create result type (range)
655 fields = TypeTuple::fields(1);
656 fields[TypeFunc::Parms+0] = Type::FLOAT;
657 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
658
659 return TypeFunc::make(domain, range);
660 }
661
662 const TypeFunc* OptoRuntime::modf_Type() {
663 const Type **fields = TypeTuple::fields(2);
664 fields[TypeFunc::Parms+0] = Type::FLOAT;
665 fields[TypeFunc::Parms+1] = Type::FLOAT;
666 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
667
668 // create result type (range)
669 fields = TypeTuple::fields(1);
670 fields[TypeFunc::Parms+0] = Type::FLOAT;
671
672 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
673
674 return TypeFunc::make(domain, range);
675 }
676
677 const TypeFunc *OptoRuntime::Math_D_D_Type() {
678 // create input type (domain)
679 const Type **fields = TypeTuple::fields(2);
680 // Symbol* name of class to be loaded
681 fields[TypeFunc::Parms+0] = Type::DOUBLE;
682 fields[TypeFunc::Parms+1] = Type::HALF;
683 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
684
685 // create result type (range)
686 fields = TypeTuple::fields(2);
687 fields[TypeFunc::Parms+0] = Type::DOUBLE;
688 fields[TypeFunc::Parms+1] = Type::HALF;
689 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
690
691 return TypeFunc::make(domain, range);
692 }
693
694 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
695 const Type **fields = TypeTuple::fields(4);
696 fields[TypeFunc::Parms+0] = Type::DOUBLE;
697 fields[TypeFunc::Parms+1] = Type::HALF;
698 fields[TypeFunc::Parms+2] = Type::DOUBLE;
699 fields[TypeFunc::Parms+3] = Type::HALF;
700 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
701
702 // create result type (range)
703 fields = TypeTuple::fields(2);
704 fields[TypeFunc::Parms+0] = Type::DOUBLE;
705 fields[TypeFunc::Parms+1] = Type::HALF;
706 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
707
708 return TypeFunc::make(domain, range);
709 }
710
711 //-------------- currentTimeMillis, currentTimeNanos, etc
712
713 const TypeFunc* OptoRuntime::void_long_Type() {
714 // create input type (domain)
715 const Type **fields = TypeTuple::fields(0);
716 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
717
718 // create result type (range)
719 fields = TypeTuple::fields(2);
720 fields[TypeFunc::Parms+0] = TypeLong::LONG;
721 fields[TypeFunc::Parms+1] = Type::HALF;
722 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
723
724 return TypeFunc::make(domain, range);
725 }
726
727 // arraycopy stub variations:
728 enum ArrayCopyType {
729 ac_fast, // void(ptr, ptr, size_t)
730 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
731 ac_slow, // void(ptr, int, ptr, int, int)
732 ac_generic // int(ptr, int, ptr, int, int)
733 };
734
735 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
736 // create input type (domain)
737 int num_args = (act == ac_fast ? 3 : 5);
738 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
739 int argcnt = num_args;
740 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
741 const Type** fields = TypeTuple::fields(argcnt);
742 int argp = TypeFunc::Parms;
743 fields[argp++] = TypePtr::NOTNULL; // src
744 if (num_size_args == 0) {
745 fields[argp++] = TypeInt::INT; // src_pos
746 }
747 fields[argp++] = TypePtr::NOTNULL; // dest
748 if (num_size_args == 0) {
749 fields[argp++] = TypeInt::INT; // dest_pos
750 fields[argp++] = TypeInt::INT; // length
751 }
752 while (num_size_args-- > 0) {
753 fields[argp++] = TypeX_X; // size in whatevers (size_t)
754 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
755 }
756 if (act == ac_checkcast) {
757 fields[argp++] = TypePtr::NOTNULL; // super_klass
758 }
759 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
760 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
761
762 // create result type if needed
763 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
764 fields = TypeTuple::fields(1);
765 if (retcnt == 0)
766 fields[TypeFunc::Parms+0] = NULL; // void
767 else
768 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
769 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
770 return TypeFunc::make(domain, range);
771 }
772
773 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
774 // This signature is simple: Two base pointers and a size_t.
775 return make_arraycopy_Type(ac_fast);
776 }
777
778 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
779 // An extension of fast_arraycopy_Type which adds type checking.
780 return make_arraycopy_Type(ac_checkcast);
781 }
782
783 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
784 // This signature is exactly the same as System.arraycopy.
785 // There are no intptr_t (int/long) arguments.
786 return make_arraycopy_Type(ac_slow);
787 }
788
789 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
790 // This signature is like System.arraycopy, except that it returns status.
791 return make_arraycopy_Type(ac_generic);
792 }
793
794
795 const TypeFunc* OptoRuntime::array_fill_Type() {
796 // create input type (domain): pointer, int, size_t
797 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1));
798 int argp = TypeFunc::Parms;
799 fields[argp++] = TypePtr::NOTNULL;
800 fields[argp++] = TypeInt::INT;
801 fields[argp++] = TypeX_X; // size in whatevers (size_t)
802 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
803 const TypeTuple *domain = TypeTuple::make(argp, fields);
804
805 // create result type
806 fields = TypeTuple::fields(1);
807 fields[TypeFunc::Parms+0] = NULL; // void
808 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
809
810 return TypeFunc::make(domain, range);
811 }
812
813 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
814 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
815 // create input type (domain)
816 int num_args = 3;
817 int argcnt = num_args;
818 const Type** fields = TypeTuple::fields(argcnt);
819 int argp = TypeFunc::Parms;
820 fields[argp++] = TypePtr::NOTNULL; // src
821 fields[argp++] = TypePtr::NOTNULL; // dest
822 fields[argp++] = TypePtr::NOTNULL; // k array
823 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
824 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
825
826 // no result type needed
827 fields = TypeTuple::fields(1);
828 fields[TypeFunc::Parms+0] = NULL; // void
829 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
830 return TypeFunc::make(domain, range);
831 }
832
833 /**
834 * int updateBytesCRC32(int crc, byte* b, int len)
835 */
836 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
837 // create input type (domain)
838 int num_args = 3;
839 int argcnt = num_args;
840 const Type** fields = TypeTuple::fields(argcnt);
841 int argp = TypeFunc::Parms;
842 fields[argp++] = TypeInt::INT; // crc
843 fields[argp++] = TypePtr::NOTNULL; // src
844 fields[argp++] = TypeInt::INT; // len
845 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
846 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
847
848 // result type needed
849 fields = TypeTuple::fields(1);
850 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
851 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
852 return TypeFunc::make(domain, range);
853 }
854
855 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void
856 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
857 // create input type (domain)
858 int num_args = 5;
859 int argcnt = num_args;
860 const Type** fields = TypeTuple::fields(argcnt);
861 int argp = TypeFunc::Parms;
862 fields[argp++] = TypePtr::NOTNULL; // src
863 fields[argp++] = TypePtr::NOTNULL; // dest
864 fields[argp++] = TypePtr::NOTNULL; // k array
865 fields[argp++] = TypePtr::NOTNULL; // r array
866 fields[argp++] = TypeInt::INT; // src len
867 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
868 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
869
870 // no result type needed
871 fields = TypeTuple::fields(1);
872 fields[TypeFunc::Parms+0] = NULL; // void
873 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
874 return TypeFunc::make(domain, range);
875 }
876
877 //------------- Interpreter state access for on stack replacement
878 const TypeFunc* OptoRuntime::osr_end_Type() {
879 // create input type (domain)
880 const Type **fields = TypeTuple::fields(1);
881 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
882 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
883
884 // create result type
885 fields = TypeTuple::fields(1);
886 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
887 fields[TypeFunc::Parms+0] = NULL; // void
888 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
889 return TypeFunc::make(domain, range);
890 }
891
892 //-------------- methodData update helpers
893
894 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
895 // create input type (domain)
896 const Type **fields = TypeTuple::fields(2);
897 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
898 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
899 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
900
901 // create result type
902 fields = TypeTuple::fields(1);
903 fields[TypeFunc::Parms+0] = NULL; // void
904 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
905 return TypeFunc::make(domain,range);
906 }
907
908 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
909 if (receiver == NULL) return;
910 Klass* receiver_klass = receiver->klass();
911
912 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
913 int empty_row = -1; // free row, if any is encountered
914
915 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
916 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
917 // if (vc->receiver(row) == receiver_klass)
918 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
919 intptr_t row_recv = *(mdp + receiver_off);
920 if (row_recv == (intptr_t) receiver_klass) {
921 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
922 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
923 *(mdp + count_off) += DataLayout::counter_increment;
924 return;
925 } else if (row_recv == 0) {
926 // else if (vc->receiver(row) == NULL)
927 empty_row = (int) row;
928 }
929 }
930
931 if (empty_row != -1) {
932 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
933 // vc->set_receiver(empty_row, receiver_klass);
934 *(mdp + receiver_off) = (intptr_t) receiver_klass;
935 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
936 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
937 *(mdp + count_off) = DataLayout::counter_increment;
938 } else {
939 // Receiver did not match any saved receiver and there is no empty row for it.
940 // Increment total counter to indicate polymorphic case.
941 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
942 *count_p += DataLayout::counter_increment;
943 }
944 JRT_END
945
946 //-------------------------------------------------------------------------------------
947 // register policy
948
949 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
950 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
951 switch (register_save_policy[reg]) {
952 case 'C': return false; //SOC
953 case 'E': return true ; //SOE
954 case 'N': return false; //NS
955 case 'A': return false; //AS
956 }
957 ShouldNotReachHere();
958 return false;
959 }
960
961 //-----------------------------------------------------------------------
962 // Exceptions
963 //
964
965 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
966
967 // The method is an entry that is always called by a C++ method not
968 // directly from compiled code. Compiled code will call the C++ method following.
969 // We can't allow async exception to be installed during exception processing.
970 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
971
972 // Do not confuse exception_oop with pending_exception. The exception_oop
973 // is only used to pass arguments into the method. Not for general
974 // exception handling. DO NOT CHANGE IT to use pending_exception, since
975 // the runtime stubs checks this on exit.
976 assert(thread->exception_oop() != NULL, "exception oop is found");
977 address handler_address = NULL;
978
979 Handle exception(thread, thread->exception_oop());
980
981 if (TraceExceptions) {
982 trace_exception(exception(), thread->exception_pc(), "");
983 }
984 // for AbortVMOnException flag
985 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
986
987 #ifdef ASSERT
988 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
989 // should throw an exception here
990 ShouldNotReachHere();
991 }
992 #endif
993
994
995 // new exception handling: this method is entered only from adapters
996 // exceptions from compiled java methods are handled in compiled code
997 // using rethrow node
998
999 address pc = thread->exception_pc();
1000 nm = CodeCache::find_nmethod(pc);
1001 assert(nm != NULL, "No NMethod found");
1002 if (nm->is_native_method()) {
1003 fatal("Native mathod should not have path to exception handling");
1004 } else {
1005 // we are switching to old paradigm: search for exception handler in caller_frame
1006 // instead in exception handler of caller_frame.sender()
1007
1008 if (JvmtiExport::can_post_on_exceptions()) {
1009 // "Full-speed catching" is not necessary here,
1010 // since we're notifying the VM on every catch.
1011 // Force deoptimization and the rest of the lookup
1012 // will be fine.
1013 deoptimize_caller_frame(thread);
1014 }
1015
1016 // Check the stack guard pages. If enabled, look for handler in this frame;
1017 // otherwise, forcibly unwind the frame.
1018 //
1019 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1020 bool force_unwind = !thread->reguard_stack();
1021 bool deopting = false;
1022 if (nm->is_deopt_pc(pc)) {
1023 deopting = true;
1024 RegisterMap map(thread, false);
1025 frame deoptee = thread->last_frame().sender(&map);
1026 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1027 // Adjust the pc back to the original throwing pc
1028 pc = deoptee.pc();
1029 }
1030
1031 // If we are forcing an unwind because of stack overflow then deopt is
1032 // irrelevant sice we are throwing the frame away anyway.
1033
1034 if (deopting && !force_unwind) {
1035 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1036 } else {
1037
1038 handler_address =
1039 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1040
1041 if (handler_address == NULL) {
1042 Handle original_exception(thread, exception());
1043 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1044 assert (handler_address != NULL, "must have compiled handler");
1045 // Update the exception cache only when the unwind was not forced
1046 // and there didn't happen another exception during the computation of the
1047 // compiled exception handler.
1048 if (!force_unwind && original_exception() == exception()) {
1049 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1050 }
1051 } else {
1052 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1053 }
1054 }
1055
1056 thread->set_exception_pc(pc);
1057 thread->set_exception_handler_pc(handler_address);
1058
1059 // Check if the exception PC is a MethodHandle call site.
1060 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1061 }
1062
1063 // Restore correct return pc. Was saved above.
1064 thread->set_exception_oop(exception());
1065 return handler_address;
1066
1067 JRT_END
1068
1069 // We are entering here from exception_blob
1070 // If there is a compiled exception handler in this method, we will continue there;
1071 // otherwise we will unwind the stack and continue at the caller of top frame method
1072 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1073 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1074 // we looked up the handler for has been deoptimized in the meantime. If it has been
1075 // we must not use the handler and instread return the deopt blob.
1076 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1077 //
1078 // We are in Java not VM and in debug mode we have a NoHandleMark
1079 //
1080 #ifndef PRODUCT
1081 SharedRuntime::_find_handler_ctr++; // find exception handler
1082 #endif
1083 debug_only(NoHandleMark __hm;)
1084 nmethod* nm = NULL;
1085 address handler_address = NULL;
1086 {
1087 // Enter the VM
1088
1089 ResetNoHandleMark rnhm;
1090 handler_address = handle_exception_C_helper(thread, nm);
1091 }
1092
1093 // Back in java: Use no oops, DON'T safepoint
1094
1095 // Now check to see if the handler we are returning is in a now
1096 // deoptimized frame
1097
1098 if (nm != NULL) {
1099 RegisterMap map(thread, false);
1100 frame caller = thread->last_frame().sender(&map);
1101 #ifdef ASSERT
1102 assert(caller.is_compiled_frame(), "must be");
1103 #endif // ASSERT
1104 if (caller.is_deoptimized_frame()) {
1105 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1106 }
1107 }
1108 return handler_address;
1109 }
1110
1111 //------------------------------rethrow----------------------------------------
1112 // We get here after compiled code has executed a 'RethrowNode'. The callee
1113 // is either throwing or rethrowing an exception. The callee-save registers
1114 // have been restored, synchronized objects have been unlocked and the callee
1115 // stack frame has been removed. The return address was passed in.
1116 // Exception oop is passed as the 1st argument. This routine is then called
1117 // from the stub. On exit, we know where to jump in the caller's code.
1118 // After this C code exits, the stub will pop his frame and end in a jump
1119 // (instead of a return). We enter the caller's default handler.
1120 //
1121 // This must be JRT_LEAF:
1122 // - caller will not change its state as we cannot block on exit,
1123 // therefore raw_exception_handler_for_return_address is all it takes
1124 // to handle deoptimized blobs
1125 //
1126 // However, there needs to be a safepoint check in the middle! So compiled
1127 // safepoints are completely watertight.
1128 //
1129 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1130 //
1131 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1132 //
1133 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1134 #ifndef PRODUCT
1135 SharedRuntime::_rethrow_ctr++; // count rethrows
1136 #endif
1137 assert (exception != NULL, "should have thrown a NULLPointerException");
1138 #ifdef ASSERT
1139 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1140 // should throw an exception here
1141 ShouldNotReachHere();
1142 }
1143 #endif
1144
1145 thread->set_vm_result(exception);
1146 // Frame not compiled (handles deoptimization blob)
1147 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1148 }
1149
1150
1151 const TypeFunc *OptoRuntime::rethrow_Type() {
1152 // create input type (domain)
1153 const Type **fields = TypeTuple::fields(1);
1154 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1155 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1156
1157 // create result type (range)
1158 fields = TypeTuple::fields(1);
1159 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1160 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1161
1162 return TypeFunc::make(domain, range);
1163 }
1164
1165
1166 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1167 // Deoptimize the caller before continuing, as the compiled
1168 // exception handler table may not be valid.
1169 if (!StressCompiledExceptionHandlers && doit) {
1170 deoptimize_caller_frame(thread);
1171 }
1172 }
1173
1174 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1175 // Called from within the owner thread, so no need for safepoint
1176 RegisterMap reg_map(thread);
1177 frame stub_frame = thread->last_frame();
1178 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1179 frame caller_frame = stub_frame.sender(®_map);
1180
1181 // Deoptimize the caller frame.
1182 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1183 }
1184
1185
1186 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1187 // Called from within the owner thread, so no need for safepoint
1188 RegisterMap reg_map(thread);
1189 frame stub_frame = thread->last_frame();
1190 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1191 frame caller_frame = stub_frame.sender(®_map);
1192 return caller_frame.is_deoptimized_frame();
1193 }
1194
1195
1196 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1197 // create input type (domain)
1198 const Type **fields = TypeTuple::fields(1);
1199 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1200 // // The JavaThread* is passed to each routine as the last argument
1201 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1202 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1203
1204 // create result type (range)
1205 fields = TypeTuple::fields(0);
1206
1207 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1208
1209 return TypeFunc::make(domain,range);
1210 }
1211
1212
1213 //-----------------------------------------------------------------------------
1214 // Dtrace support. entry and exit probes have the same signature
1215 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1216 // create input type (domain)
1217 const Type **fields = TypeTuple::fields(2);
1218 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1219 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1220 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1221
1222 // create result type (range)
1223 fields = TypeTuple::fields(0);
1224
1225 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1226
1227 return TypeFunc::make(domain,range);
1228 }
1229
1230 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1231 // create input type (domain)
1232 const Type **fields = TypeTuple::fields(2);
1233 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1234 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1235
1236 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1237
1238 // create result type (range)
1239 fields = TypeTuple::fields(0);
1240
1241 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1242
1243 return TypeFunc::make(domain,range);
1244 }
1245
1246
1247 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1248 assert(obj->is_oop(), "must be a valid oop");
1249 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1250 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1251 JRT_END
1252
1253 //-----------------------------------------------------------------------------
1254
1255 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1256
1257 //
1258 // dump the collected NamedCounters.
1259 //
1260 void OptoRuntime::print_named_counters() {
1261 int total_lock_count = 0;
1262 int eliminated_lock_count = 0;
1263
1264 NamedCounter* c = _named_counters;
1265 while (c) {
1266 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1267 int count = c->count();
1268 if (count > 0) {
1269 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1270 if (Verbose) {
1271 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1272 }
1273 total_lock_count += count;
1274 if (eliminated) {
1275 eliminated_lock_count += count;
1276 }
1277 }
1278 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1279 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1280 if (blc->nonzero()) {
1281 tty->print_cr("%s", c->name());
1282 blc->print_on(tty);
1283 }
1284 }
1285 c = c->next();
1286 }
1287 if (total_lock_count > 0) {
1288 tty->print_cr("dynamic locks: %d", total_lock_count);
1289 if (eliminated_lock_count) {
1290 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1291 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1292 }
1293 }
1294 }
1295
1296 //
1297 // Allocate a new NamedCounter. The JVMState is used to generate the
1298 // name which consists of method@line for the inlining tree.
1299 //
1300
1301 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1302 int max_depth = youngest_jvms->depth();
1303
1304 // Visit scopes from youngest to oldest.
1305 bool first = true;
1306 stringStream st;
1307 for (int depth = max_depth; depth >= 1; depth--) {
1308 JVMState* jvms = youngest_jvms->of_depth(depth);
1309 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1310 if (!first) {
1311 st.print(" ");
1312 } else {
1313 first = false;
1314 }
1315 int bci = jvms->bci();
1316 if (bci < 0) bci = 0;
1317 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1318 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1319 }
1320 NamedCounter* c;
1321 if (tag == NamedCounter::BiasedLockingCounter) {
1322 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1323 } else {
1324 c = new NamedCounter(strdup(st.as_string()), tag);
1325 }
1326
1327 // atomically add the new counter to the head of the list. We only
1328 // add counters so this is safe.
1329 NamedCounter* head;
1330 do {
1331 head = _named_counters;
1332 c->set_next(head);
1333 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1334 return c;
1335 }
1336
1337 //-----------------------------------------------------------------------------
1338 // Non-product code
1339 #ifndef PRODUCT
1340
1341 int trace_exception_counter = 0;
1342 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1343 ttyLocker ttyl;
1344 trace_exception_counter++;
1345 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1346 exception_oop->print_value();
1347 tty->print(" in ");
1348 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1349 if (blob->is_nmethod()) {
1350 ((nmethod*)blob)->method()->print_value();
1351 } else if (blob->is_runtime_stub()) {
1352 tty->print("<runtime-stub>");
1353 } else {
1354 tty->print("<unknown>");
1355 }
1356 tty->print(" at " INTPTR_FORMAT, exception_pc);
1357 tty->print_cr("]");
1358 }
1359
1360 #endif // PRODUCT
1361
1362
1363 # ifdef ENABLE_ZAP_DEAD_LOCALS
1364 // Called from call sites in compiled code with oop maps (actually safepoints)
1365 // Zaps dead locals in first java frame.
1366 // Is entry because may need to lock to generate oop maps
1367 // Currently, only used for compiler frames, but someday may be used
1368 // for interpreter frames, too.
1369
1370 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1371
1372 // avoid pointers to member funcs with these helpers
1373 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1374 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1375
1376
1377 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1378 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1379 assert(JavaThread::current() == thread, "is this needed?");
1380
1381 if ( !ZapDeadCompiledLocals ) return;
1382
1383 bool skip = false;
1384
1385 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1386 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1387 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1388 warning("starting zapping after skipping");
1389
1390 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1391 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1392 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1393 warning("about to zap last zap");
1394
1395 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1396
1397 if ( skip ) return;
1398
1399 // find java frame and zap it
1400
1401 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1402 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1403 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1404 return;
1405 }
1406 }
1407 warning("no frame found to zap in zap_dead_Java_locals_C");
1408 }
1409
1410 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1411 zap_dead_java_or_native_locals(thread, is_java_frame);
1412 JRT_END
1413
1414 // The following does not work because for one thing, the
1415 // thread state is wrong; it expects java, but it is native.
1416 // Also, the invariants in a native stub are different and
1417 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1418 // in there.
1419 // So for now, we do not zap in native stubs.
1420
1421 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1422 zap_dead_java_or_native_locals(thread, is_native_frame);
1423 JRT_END
1424
1425 # endif