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_32
87 # include "adfiles/ad_ppc_32.hpp"
88 #endif
89 #ifdef TARGET_ARCH_MODEL_ppc_64
90 # include "adfiles/ad_ppc_64.hpp"
91 #endif
92
93
94 // For debugging purposes:
95 // To force FullGCALot inside a runtime function, add the following two lines
96 //
97 // Universe::release_fullgc_alot_dummy();
98 // MarkSweep::invoke(0, "Debugging");
99 //
100 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
101
102
103
104
105 // Compiled code entry points
106 address OptoRuntime::_new_instance_Java = NULL;
107 address OptoRuntime::_new_array_Java = NULL;
108 address OptoRuntime::_new_array_nozero_Java = NULL;
109 address OptoRuntime::_multianewarray2_Java = NULL;
110 address OptoRuntime::_multianewarray3_Java = NULL;
111 address OptoRuntime::_multianewarray4_Java = NULL;
112 address OptoRuntime::_multianewarray5_Java = NULL;
113 address OptoRuntime::_multianewarrayN_Java = NULL;
114 address OptoRuntime::_g1_wb_pre_Java = NULL;
115 address OptoRuntime::_g1_wb_post_Java = NULL;
116 address OptoRuntime::_vtable_must_compile_Java = NULL;
117 address OptoRuntime::_complete_monitor_locking_Java = NULL;
118 address OptoRuntime::_rethrow_Java = NULL;
119
120 address OptoRuntime::_slow_arraycopy_Java = NULL;
121 address OptoRuntime::_register_finalizer_Java = NULL;
122
123 # ifdef ENABLE_ZAP_DEAD_LOCALS
124 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
125 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
126 # endif
127
128 ExceptionBlob* OptoRuntime::_exception_blob;
129
130 // This should be called in an assertion at the start of OptoRuntime routines
131 // which are entered from compiled code (all of them)
132 #ifdef ASSERT
133 static bool check_compiled_frame(JavaThread* thread) {
134 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
135 RegisterMap map(thread, false);
136 frame caller = thread->last_frame().sender(&map);
137 assert(caller.is_compiled_frame(), "not being called from compiled like code");
138 return true;
139 }
140 #endif // ASSERT
141
142
143 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
144 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)
145
146 void OptoRuntime::generate(ciEnv* env) {
147
148 generate_exception_blob();
149
150 // Note: tls: Means fetching the return oop out of the thread-local storage
151 //
152 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
153 // -------------------------------------------------------------------------------------------------------------------------------
154 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
155 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
156 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false);
157 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
158 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
159 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
160 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
161 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false);
162 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
163 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
164 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false);
165 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
166
167 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
168 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
169
170 # ifdef ENABLE_ZAP_DEAD_LOCALS
171 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
172 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
173 # endif
174
175 }
176
177 #undef gen
178
179
180 // Helper method to do generation of RunTimeStub's
181 address OptoRuntime::generate_stub( ciEnv* env,
182 TypeFunc_generator gen, address C_function,
183 const char *name, int is_fancy_jump,
184 bool pass_tls,
185 bool save_argument_registers,
186 bool return_pc ) {
187 ResourceMark rm;
188 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
189 return C.stub_entry_point();
190 }
191
192 const char* OptoRuntime::stub_name(address entry) {
193 #ifndef PRODUCT
194 CodeBlob* cb = CodeCache::find_blob(entry);
195 RuntimeStub* rs =(RuntimeStub *)cb;
196 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
197 return rs->name();
198 #else
199 // Fast implementation for product mode (maybe it should be inlined too)
200 return "runtime stub";
201 #endif
202 }
203
204
205 //=============================================================================
206 // Opto compiler runtime routines
207 //=============================================================================
208
209
210 //=============================allocation======================================
211 // We failed the fast-path allocation. Now we need to do a scavenge or GC
212 // and try allocation again.
213
214 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
215 // After any safepoint, just before going back to compiled code,
216 // we inform the GC that we will be doing initializing writes to
217 // this object in the future without emitting card-marks, so
218 // GC may take any compensating steps.
219 // NOTE: Keep this code consistent with GraphKit::store_barrier.
220
221 oop new_obj = thread->vm_result();
222 if (new_obj == NULL) return;
223
224 assert(Universe::heap()->can_elide_tlab_store_barriers(),
225 "compiler must check this first");
226 // GC may decide to give back a safer copy of new_obj.
227 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
228 thread->set_vm_result(new_obj);
229 }
230
231 // object allocation
232 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))
233 JRT_BLOCK;
234 #ifndef PRODUCT
235 SharedRuntime::_new_instance_ctr++; // new instance requires GC
236 #endif
237 assert(check_compiled_frame(thread), "incorrect caller");
238
239 // These checks are cheap to make and support reflective allocation.
240 int lh = klass->layout_helper();
241 if (Klass::layout_helper_needs_slow_path(lh)
242 || !InstanceKlass::cast(klass)->is_initialized()) {
243 KlassHandle kh(THREAD, klass);
244 kh->check_valid_for_instantiation(false, THREAD);
245 if (!HAS_PENDING_EXCEPTION) {
246 InstanceKlass::cast(kh())->initialize(THREAD);
247 }
248 if (!HAS_PENDING_EXCEPTION) {
249 klass = kh();
250 } else {
251 klass = NULL;
252 }
253 }
254
255 if (klass != NULL) {
256 // Scavenge and allocate an instance.
257 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
258 thread->set_vm_result(result);
259
260 // Pass oops back through thread local storage. Our apparent type to Java
261 // is that we return an oop, but we can block on exit from this routine and
262 // a GC can trash the oop in C's return register. The generated stub will
263 // fetch the oop from TLS after any possible GC.
264 }
265
266 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
267 JRT_BLOCK_END;
268
269 if (GraphKit::use_ReduceInitialCardMarks()) {
270 // inform GC that we won't do card marks for initializing writes.
271 new_store_pre_barrier(thread);
272 }
273 JRT_END
274
275
276 // array allocation
277 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))
278 JRT_BLOCK;
279 #ifndef PRODUCT
280 SharedRuntime::_new_array_ctr++; // new array requires GC
281 #endif
282 assert(check_compiled_frame(thread), "incorrect caller");
283
284 // Scavenge and allocate an instance.
285 oop result;
286
287 if (array_type->oop_is_typeArray()) {
288 // The oopFactory likes to work with the element type.
289 // (We could bypass the oopFactory, since it doesn't add much value.)
290 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
291 result = oopFactory::new_typeArray(elem_type, len, THREAD);
292 } else {
293 // Although the oopFactory likes to work with the elem_type,
294 // the compiler prefers the array_type, since it must already have
295 // that latter value in hand for the fast path.
296 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
297 result = oopFactory::new_objArray(elem_type, len, THREAD);
298 }
299
300 // Pass oops back through thread local storage. Our apparent type to Java
301 // is that we return an oop, but we can block on exit from this routine and
302 // a GC can trash the oop in C's return register. The generated stub will
303 // fetch the oop from TLS after any possible GC.
304 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
305 thread->set_vm_result(result);
306 JRT_BLOCK_END;
307
308 if (GraphKit::use_ReduceInitialCardMarks()) {
309 // inform GC that we won't do card marks for initializing writes.
310 new_store_pre_barrier(thread);
311 }
312 JRT_END
313
314 // array allocation without zeroing
315 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))
316 JRT_BLOCK;
317 #ifndef PRODUCT
318 SharedRuntime::_new_array_ctr++; // new array requires GC
319 #endif
320 assert(check_compiled_frame(thread), "incorrect caller");
321
322 // Scavenge and allocate an instance.
323 oop result;
324
325 assert(array_type->oop_is_typeArray(), "should be called only for type array");
326 // The oopFactory likes to work with the element type.
327 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
328 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
329
330 // Pass oops back through thread local storage. Our apparent type to Java
331 // is that we return an oop, but we can block on exit from this routine and
332 // a GC can trash the oop in C's return register. The generated stub will
333 // fetch the oop from TLS after any possible GC.
334 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
335 thread->set_vm_result(result);
336 JRT_BLOCK_END;
337
338 if (GraphKit::use_ReduceInitialCardMarks()) {
339 // inform GC that we won't do card marks for initializing writes.
340 new_store_pre_barrier(thread);
341 }
342
343 oop result = thread->vm_result();
344 if ((len > 0) && (result != NULL) &&
345 is_deoptimized_caller_frame(thread)) {
346 // Zero array here if the caller is deoptimized.
347 int size = ((typeArrayOop)result)->object_size();
348 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
349 const size_t hs = arrayOopDesc::header_size(elem_type);
350 // Align to next 8 bytes to avoid trashing arrays's length.
351 const size_t aligned_hs = align_object_offset(hs);
352 HeapWord* obj = (HeapWord*)result;
353 if (aligned_hs > hs) {
354 Copy::zero_to_words(obj+hs, aligned_hs-hs);
355 }
356 // Optimized zeroing.
357 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
358 }
359
360 JRT_END
361
362 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
363
364 // multianewarray for 2 dimensions
365 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))
366 #ifndef PRODUCT
367 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
368 #endif
369 assert(check_compiled_frame(thread), "incorrect caller");
370 assert(elem_type->is_klass(), "not a class");
371 jint dims[2];
372 dims[0] = len1;
373 dims[1] = len2;
374 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
375 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
376 thread->set_vm_result(obj);
377 JRT_END
378
379 // multianewarray for 3 dimensions
380 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))
381 #ifndef PRODUCT
382 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
383 #endif
384 assert(check_compiled_frame(thread), "incorrect caller");
385 assert(elem_type->is_klass(), "not a class");
386 jint dims[3];
387 dims[0] = len1;
388 dims[1] = len2;
389 dims[2] = len3;
390 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
391 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
392 thread->set_vm_result(obj);
393 JRT_END
394
395 // multianewarray for 4 dimensions
396 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
397 #ifndef PRODUCT
398 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
399 #endif
400 assert(check_compiled_frame(thread), "incorrect caller");
401 assert(elem_type->is_klass(), "not a class");
402 jint dims[4];
403 dims[0] = len1;
404 dims[1] = len2;
405 dims[2] = len3;
406 dims[3] = len4;
407 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
408 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
409 thread->set_vm_result(obj);
410 JRT_END
411
412 // multianewarray for 5 dimensions
413 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
414 #ifndef PRODUCT
415 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
416 #endif
417 assert(check_compiled_frame(thread), "incorrect caller");
418 assert(elem_type->is_klass(), "not a class");
419 jint dims[5];
420 dims[0] = len1;
421 dims[1] = len2;
422 dims[2] = len3;
423 dims[3] = len4;
424 dims[4] = len5;
425 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
426 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
427 thread->set_vm_result(obj);
428 JRT_END
429
430 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))
431 assert(check_compiled_frame(thread), "incorrect caller");
432 assert(elem_type->is_klass(), "not a class");
433 assert(oop(dims)->is_typeArray(), "not an array");
434
435 ResourceMark rm;
436 jint len = dims->length();
437 assert(len > 0, "Dimensions array should contain data");
438 jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
439 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
440 Copy::conjoint_jints_atomic(j_dims, c_dims, len);
441
442 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
443 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
444 thread->set_vm_result(obj);
445 JRT_END
446
447
448 const TypeFunc *OptoRuntime::new_instance_Type() {
449 // create input type (domain)
450 const Type **fields = TypeTuple::fields(1);
451 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
452 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
453
454 // create result type (range)
455 fields = TypeTuple::fields(1);
456 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
457
458 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
459
460 return TypeFunc::make(domain, range);
461 }
462
463
464 const TypeFunc *OptoRuntime::athrow_Type() {
465 // create input type (domain)
466 const Type **fields = TypeTuple::fields(1);
467 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
468 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
469
470 // create result type (range)
471 fields = TypeTuple::fields(0);
472
473 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
474
475 return TypeFunc::make(domain, range);
476 }
477
478
479 const TypeFunc *OptoRuntime::new_array_Type() {
480 // create input type (domain)
481 const Type **fields = TypeTuple::fields(2);
482 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
483 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
484 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
485
486 // create result type (range)
487 fields = TypeTuple::fields(1);
488 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
489
490 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
491
492 return TypeFunc::make(domain, range);
493 }
494
495 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
496 // create input type (domain)
497 const int nargs = ndim + 1;
498 const Type **fields = TypeTuple::fields(nargs);
499 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
500 for( int i = 1; i < nargs; i++ )
501 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
502 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
503
504 // create result type (range)
505 fields = TypeTuple::fields(1);
506 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
507 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
508
509 return TypeFunc::make(domain, range);
510 }
511
512 const TypeFunc *OptoRuntime::multianewarray2_Type() {
513 return multianewarray_Type(2);
514 }
515
516 const TypeFunc *OptoRuntime::multianewarray3_Type() {
517 return multianewarray_Type(3);
518 }
519
520 const TypeFunc *OptoRuntime::multianewarray4_Type() {
521 return multianewarray_Type(4);
522 }
523
524 const TypeFunc *OptoRuntime::multianewarray5_Type() {
525 return multianewarray_Type(5);
526 }
527
528 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
529 // create input type (domain)
530 const Type **fields = TypeTuple::fields(2);
531 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
532 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes
533 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
534
535 // create result type (range)
536 fields = TypeTuple::fields(1);
537 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
538 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
539
540 return TypeFunc::make(domain, range);
541 }
542
543 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
544 const Type **fields = TypeTuple::fields(2);
545 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
546 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
547 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
548
549 // create result type (range)
550 fields = TypeTuple::fields(0);
551 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
552
553 return TypeFunc::make(domain, range);
554 }
555
556 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
557
558 const Type **fields = TypeTuple::fields(2);
559 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
560 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
561 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
562
563 // create result type (range)
564 fields = TypeTuple::fields(0);
565 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
566
567 return TypeFunc::make(domain, range);
568 }
569
570 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
571 // create input type (domain)
572 const Type **fields = TypeTuple::fields(1);
573 // Symbol* name of class to be loaded
574 fields[TypeFunc::Parms+0] = TypeInt::INT;
575 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
576
577 // create result type (range)
578 fields = TypeTuple::fields(0);
579 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
580
581 return TypeFunc::make(domain, range);
582 }
583
584 # ifdef ENABLE_ZAP_DEAD_LOCALS
585 // Type used for stub generation for zap_dead_locals.
586 // No inputs or outputs
587 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
588 // create input type (domain)
589 const Type **fields = TypeTuple::fields(0);
590 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
591
592 // create result type (range)
593 fields = TypeTuple::fields(0);
594 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
595
596 return TypeFunc::make(domain,range);
597 }
598 # endif
599
600
601 //-----------------------------------------------------------------------------
602 // Monitor Handling
603 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
604 // create input type (domain)
605 const Type **fields = TypeTuple::fields(2);
606 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
607 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
608 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
609
610 // create result type (range)
611 fields = TypeTuple::fields(0);
612
613 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
614
615 return TypeFunc::make(domain,range);
616 }
617
618
619 //-----------------------------------------------------------------------------
620 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
621 // create input type (domain)
622 const Type **fields = TypeTuple::fields(2);
623 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
624 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
625 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
626
627 // create result type (range)
628 fields = TypeTuple::fields(0);
629
630 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
631
632 return TypeFunc::make(domain,range);
633 }
634
635 const TypeFunc* OptoRuntime::flush_windows_Type() {
636 // create input type (domain)
637 const Type** fields = TypeTuple::fields(1);
638 fields[TypeFunc::Parms+0] = NULL; // void
639 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
640
641 // create result type
642 fields = TypeTuple::fields(1);
643 fields[TypeFunc::Parms+0] = NULL; // void
644 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
645
646 return TypeFunc::make(domain, range);
647 }
648
649 const TypeFunc* OptoRuntime::l2f_Type() {
650 // create input type (domain)
651 const Type **fields = TypeTuple::fields(2);
652 fields[TypeFunc::Parms+0] = TypeLong::LONG;
653 fields[TypeFunc::Parms+1] = Type::HALF;
654 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
655
656 // create result type (range)
657 fields = TypeTuple::fields(1);
658 fields[TypeFunc::Parms+0] = Type::FLOAT;
659 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
660
661 return TypeFunc::make(domain, range);
662 }
663
664 const TypeFunc* OptoRuntime::modf_Type() {
665 const Type **fields = TypeTuple::fields(2);
666 fields[TypeFunc::Parms+0] = Type::FLOAT;
667 fields[TypeFunc::Parms+1] = Type::FLOAT;
668 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
669
670 // create result type (range)
671 fields = TypeTuple::fields(1);
672 fields[TypeFunc::Parms+0] = Type::FLOAT;
673
674 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
675
676 return TypeFunc::make(domain, range);
677 }
678
679 const TypeFunc *OptoRuntime::Math_D_D_Type() {
680 // create input type (domain)
681 const Type **fields = TypeTuple::fields(2);
682 // Symbol* name of class to be loaded
683 fields[TypeFunc::Parms+0] = Type::DOUBLE;
684 fields[TypeFunc::Parms+1] = Type::HALF;
685 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
686
687 // create result type (range)
688 fields = TypeTuple::fields(2);
689 fields[TypeFunc::Parms+0] = Type::DOUBLE;
690 fields[TypeFunc::Parms+1] = Type::HALF;
691 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
692
693 return TypeFunc::make(domain, range);
694 }
695
696 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
697 const Type **fields = TypeTuple::fields(4);
698 fields[TypeFunc::Parms+0] = Type::DOUBLE;
699 fields[TypeFunc::Parms+1] = Type::HALF;
700 fields[TypeFunc::Parms+2] = Type::DOUBLE;
701 fields[TypeFunc::Parms+3] = Type::HALF;
702 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
703
704 // create result type (range)
705 fields = TypeTuple::fields(2);
706 fields[TypeFunc::Parms+0] = Type::DOUBLE;
707 fields[TypeFunc::Parms+1] = Type::HALF;
708 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
709
710 return TypeFunc::make(domain, range);
711 }
712
713 //-------------- currentTimeMillis, currentTimeNanos, etc
714
715 const TypeFunc* OptoRuntime::void_long_Type() {
716 // create input type (domain)
717 const Type **fields = TypeTuple::fields(0);
718 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
719
720 // create result type (range)
721 fields = TypeTuple::fields(2);
722 fields[TypeFunc::Parms+0] = TypeLong::LONG;
723 fields[TypeFunc::Parms+1] = Type::HALF;
724 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
725
726 return TypeFunc::make(domain, range);
727 }
728
729 // arraycopy stub variations:
730 enum ArrayCopyType {
731 ac_fast, // void(ptr, ptr, size_t)
732 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
733 ac_slow, // void(ptr, int, ptr, int, int)
734 ac_generic // int(ptr, int, ptr, int, int)
735 };
736
737 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
738 // create input type (domain)
739 int num_args = (act == ac_fast ? 3 : 5);
740 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
741 int argcnt = num_args;
742 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
743 const Type** fields = TypeTuple::fields(argcnt);
744 int argp = TypeFunc::Parms;
745 fields[argp++] = TypePtr::NOTNULL; // src
746 if (num_size_args == 0) {
747 fields[argp++] = TypeInt::INT; // src_pos
748 }
749 fields[argp++] = TypePtr::NOTNULL; // dest
750 if (num_size_args == 0) {
751 fields[argp++] = TypeInt::INT; // dest_pos
752 fields[argp++] = TypeInt::INT; // length
753 }
754 while (num_size_args-- > 0) {
755 fields[argp++] = TypeX_X; // size in whatevers (size_t)
756 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
757 }
758 if (act == ac_checkcast) {
759 fields[argp++] = TypePtr::NOTNULL; // super_klass
760 }
761 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
762 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
763
764 // create result type if needed
765 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
766 fields = TypeTuple::fields(1);
767 if (retcnt == 0)
768 fields[TypeFunc::Parms+0] = NULL; // void
769 else
770 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
771 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
772 return TypeFunc::make(domain, range);
773 }
774
775 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
776 // This signature is simple: Two base pointers and a size_t.
777 return make_arraycopy_Type(ac_fast);
778 }
779
780 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
781 // An extension of fast_arraycopy_Type which adds type checking.
782 return make_arraycopy_Type(ac_checkcast);
783 }
784
785 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
786 // This signature is exactly the same as System.arraycopy.
787 // There are no intptr_t (int/long) arguments.
788 return make_arraycopy_Type(ac_slow);
789 }
790
791 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
792 // This signature is like System.arraycopy, except that it returns status.
793 return make_arraycopy_Type(ac_generic);
794 }
795
796
797 const TypeFunc* OptoRuntime::array_fill_Type() {
798 // create input type (domain): pointer, int, size_t
799 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1));
800 int argp = TypeFunc::Parms;
801 fields[argp++] = TypePtr::NOTNULL;
802 fields[argp++] = TypeInt::INT;
803 fields[argp++] = TypeX_X; // size in whatevers (size_t)
804 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
805 const TypeTuple *domain = TypeTuple::make(argp, fields);
806
807 // create result type
808 fields = TypeTuple::fields(1);
809 fields[TypeFunc::Parms+0] = NULL; // void
810 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
811
812 return TypeFunc::make(domain, range);
813 }
814
815 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
816 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
817 // create input type (domain)
818 int num_args = 3;
819 int argcnt = num_args;
820 const Type** fields = TypeTuple::fields(argcnt);
821 int argp = TypeFunc::Parms;
822 fields[argp++] = TypePtr::NOTNULL; // src
823 fields[argp++] = TypePtr::NOTNULL; // dest
824 fields[argp++] = TypePtr::NOTNULL; // k array
825 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
826 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
827
828 // no result type needed
829 fields = TypeTuple::fields(1);
830 fields[TypeFunc::Parms+0] = NULL; // void
831 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
832 return TypeFunc::make(domain, range);
833 }
834
835 /**
836 * int updateBytesCRC32(int crc, byte* b, int len)
837 */
838 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
839 // create input type (domain)
840 int num_args = 3;
841 int argcnt = num_args;
842 const Type** fields = TypeTuple::fields(argcnt);
843 int argp = TypeFunc::Parms;
844 fields[argp++] = TypeInt::INT; // crc
845 fields[argp++] = TypePtr::NOTNULL; // src
846 fields[argp++] = TypeInt::INT; // len
847 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
848 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
849
850 // result type needed
851 fields = TypeTuple::fields(1);
852 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
853 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
854 return TypeFunc::make(domain, range);
855 }
856
857 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void
858 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
859 // create input type (domain)
860 int num_args = 5;
861 int argcnt = num_args;
862 const Type** fields = TypeTuple::fields(argcnt);
863 int argp = TypeFunc::Parms;
864 fields[argp++] = TypePtr::NOTNULL; // src
865 fields[argp++] = TypePtr::NOTNULL; // dest
866 fields[argp++] = TypePtr::NOTNULL; // k array
867 fields[argp++] = TypePtr::NOTNULL; // r array
868 fields[argp++] = TypeInt::INT; // src len
869 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
870 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
871
872 // no result type needed
873 fields = TypeTuple::fields(1);
874 fields[TypeFunc::Parms+0] = NULL; // void
875 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
876 return TypeFunc::make(domain, range);
877 }
878
879 //------------- Interpreter state access for on stack replacement
880 const TypeFunc* OptoRuntime::osr_end_Type() {
881 // create input type (domain)
882 const Type **fields = TypeTuple::fields(1);
883 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
884 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
885
886 // create result type
887 fields = TypeTuple::fields(1);
888 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
889 fields[TypeFunc::Parms+0] = NULL; // void
890 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
891 return TypeFunc::make(domain, range);
892 }
893
894 //-------------- methodData update helpers
895
896 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
897 // create input type (domain)
898 const Type **fields = TypeTuple::fields(2);
899 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
900 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
901 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
902
903 // create result type
904 fields = TypeTuple::fields(1);
905 fields[TypeFunc::Parms+0] = NULL; // void
906 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
907 return TypeFunc::make(domain,range);
908 }
909
910 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
911 if (receiver == NULL) return;
912 Klass* receiver_klass = receiver->klass();
913
914 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
915 int empty_row = -1; // free row, if any is encountered
916
917 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
918 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
919 // if (vc->receiver(row) == receiver_klass)
920 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
921 intptr_t row_recv = *(mdp + receiver_off);
922 if (row_recv == (intptr_t) receiver_klass) {
923 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
924 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
925 *(mdp + count_off) += DataLayout::counter_increment;
926 return;
927 } else if (row_recv == 0) {
928 // else if (vc->receiver(row) == NULL)
929 empty_row = (int) row;
930 }
931 }
932
933 if (empty_row != -1) {
934 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
935 // vc->set_receiver(empty_row, receiver_klass);
936 *(mdp + receiver_off) = (intptr_t) receiver_klass;
937 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
938 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
939 *(mdp + count_off) = DataLayout::counter_increment;
940 } else {
941 // Receiver did not match any saved receiver and there is no empty row for it.
942 // Increment total counter to indicate polymorphic case.
943 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
944 *count_p += DataLayout::counter_increment;
945 }
946 JRT_END
947
948 //-------------------------------------------------------------------------------------
949 // register policy
950
951 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
952 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
953 switch (register_save_policy[reg]) {
954 case 'C': return false; //SOC
955 case 'E': return true ; //SOE
956 case 'N': return false; //NS
957 case 'A': return false; //AS
958 }
959 ShouldNotReachHere();
960 return false;
961 }
962
963 //-----------------------------------------------------------------------
964 // Exceptions
965 //
966
967 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
968
969 // The method is an entry that is always called by a C++ method not
970 // directly from compiled code. Compiled code will call the C++ method following.
971 // We can't allow async exception to be installed during exception processing.
972 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
973
974 // Do not confuse exception_oop with pending_exception. The exception_oop
975 // is only used to pass arguments into the method. Not for general
976 // exception handling. DO NOT CHANGE IT to use pending_exception, since
977 // the runtime stubs checks this on exit.
978 assert(thread->exception_oop() != NULL, "exception oop is found");
979 address handler_address = NULL;
980
981 Handle exception(thread, thread->exception_oop());
982
983 if (TraceExceptions) {
984 trace_exception(exception(), thread->exception_pc(), "");
985 }
986 // for AbortVMOnException flag
987 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
988
989 #ifdef ASSERT
990 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
991 // should throw an exception here
992 ShouldNotReachHere();
993 }
994 #endif
995
996
997 // new exception handling: this method is entered only from adapters
998 // exceptions from compiled java methods are handled in compiled code
999 // using rethrow node
1000
1001 address pc = thread->exception_pc();
1002 nm = CodeCache::find_nmethod(pc);
1003 assert(nm != NULL, "No NMethod found");
1004 if (nm->is_native_method()) {
1005 fatal("Native method should not have path to exception handling");
1006 } else {
1007 // we are switching to old paradigm: search for exception handler in caller_frame
1008 // instead in exception handler of caller_frame.sender()
1009
1010 if (JvmtiExport::can_post_on_exceptions()) {
1011 // "Full-speed catching" is not necessary here,
1012 // since we're notifying the VM on every catch.
1013 // Force deoptimization and the rest of the lookup
1014 // will be fine.
1015 deoptimize_caller_frame(thread);
1016 }
1017
1018 // Check the stack guard pages. If enabled, look for handler in this frame;
1019 // otherwise, forcibly unwind the frame.
1020 //
1021 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1022 bool force_unwind = !thread->reguard_stack();
1023 bool deopting = false;
1024 if (nm->is_deopt_pc(pc)) {
1025 deopting = true;
1026 RegisterMap map(thread, false);
1027 frame deoptee = thread->last_frame().sender(&map);
1028 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1029 // Adjust the pc back to the original throwing pc
1030 pc = deoptee.pc();
1031 }
1032
1033 // If we are forcing an unwind because of stack overflow then deopt is
1034 // irrelevant since we are throwing the frame away anyway.
1035
1036 if (deopting && !force_unwind) {
1037 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1038 } else {
1039
1040 handler_address =
1041 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1042
1043 if (handler_address == NULL) {
1044 Handle original_exception(thread, exception());
1045 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1046 assert (handler_address != NULL, "must have compiled handler");
1047 // Update the exception cache only when the unwind was not forced
1048 // and there didn't happen another exception during the computation of the
1049 // compiled exception handler.
1050 if (!force_unwind && original_exception() == exception()) {
1051 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1052 }
1053 } else {
1054 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1055 }
1056 }
1057
1058 thread->set_exception_pc(pc);
1059 thread->set_exception_handler_pc(handler_address);
1060
1061 // Check if the exception PC is a MethodHandle call site.
1062 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1063 }
1064
1065 // Restore correct return pc. Was saved above.
1066 thread->set_exception_oop(exception());
1067 return handler_address;
1068
1069 JRT_END
1070
1071 // We are entering here from exception_blob
1072 // If there is a compiled exception handler in this method, we will continue there;
1073 // otherwise we will unwind the stack and continue at the caller of top frame method
1074 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1075 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1076 // we looked up the handler for has been deoptimized in the meantime. If it has been
1077 // we must not use the handler and instead return the deopt blob.
1078 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1079 //
1080 // We are in Java not VM and in debug mode we have a NoHandleMark
1081 //
1082 #ifndef PRODUCT
1083 SharedRuntime::_find_handler_ctr++; // find exception handler
1084 #endif
1085 debug_only(NoHandleMark __hm;)
1086 nmethod* nm = NULL;
1087 address handler_address = NULL;
1088 {
1089 // Enter the VM
1090
1091 ResetNoHandleMark rnhm;
1092 handler_address = handle_exception_C_helper(thread, nm);
1093 }
1094
1095 // Back in java: Use no oops, DON'T safepoint
1096
1097 // Now check to see if the handler we are returning is in a now
1098 // deoptimized frame
1099
1100 if (nm != NULL) {
1101 RegisterMap map(thread, false);
1102 frame caller = thread->last_frame().sender(&map);
1103 #ifdef ASSERT
1104 assert(caller.is_compiled_frame(), "must be");
1105 #endif // ASSERT
1106 if (caller.is_deoptimized_frame()) {
1107 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1108 }
1109 }
1110 return handler_address;
1111 }
1112
1113 //------------------------------rethrow----------------------------------------
1114 // We get here after compiled code has executed a 'RethrowNode'. The callee
1115 // is either throwing or rethrowing an exception. The callee-save registers
1116 // have been restored, synchronized objects have been unlocked and the callee
1117 // stack frame has been removed. The return address was passed in.
1118 // Exception oop is passed as the 1st argument. This routine is then called
1119 // from the stub. On exit, we know where to jump in the caller's code.
1120 // After this C code exits, the stub will pop his frame and end in a jump
1121 // (instead of a return). We enter the caller's default handler.
1122 //
1123 // This must be JRT_LEAF:
1124 // - caller will not change its state as we cannot block on exit,
1125 // therefore raw_exception_handler_for_return_address is all it takes
1126 // to handle deoptimized blobs
1127 //
1128 // However, there needs to be a safepoint check in the middle! So compiled
1129 // safepoints are completely watertight.
1130 //
1131 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1132 //
1133 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1134 //
1135 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1136 #ifndef PRODUCT
1137 SharedRuntime::_rethrow_ctr++; // count rethrows
1138 #endif
1139 assert (exception != NULL, "should have thrown a NULLPointerException");
1140 #ifdef ASSERT
1141 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1142 // should throw an exception here
1143 ShouldNotReachHere();
1144 }
1145 #endif
1146
1147 thread->set_vm_result(exception);
1148 // Frame not compiled (handles deoptimization blob)
1149 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1150 }
1151
1152
1153 const TypeFunc *OptoRuntime::rethrow_Type() {
1154 // create input type (domain)
1155 const Type **fields = TypeTuple::fields(1);
1156 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1157 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1158
1159 // create result type (range)
1160 fields = TypeTuple::fields(1);
1161 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1162 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1163
1164 return TypeFunc::make(domain, range);
1165 }
1166
1167
1168 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1169 // Deoptimize the caller before continuing, as the compiled
1170 // exception handler table may not be valid.
1171 if (!StressCompiledExceptionHandlers && doit) {
1172 deoptimize_caller_frame(thread);
1173 }
1174 }
1175
1176 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1177 // Called from within the owner thread, so no need for safepoint
1178 RegisterMap reg_map(thread);
1179 frame stub_frame = thread->last_frame();
1180 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1181 frame caller_frame = stub_frame.sender(®_map);
1182
1183 // Deoptimize the caller frame.
1184 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1185 }
1186
1187
1188 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1189 // Called from within the owner thread, so no need for safepoint
1190 RegisterMap reg_map(thread);
1191 frame stub_frame = thread->last_frame();
1192 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1193 frame caller_frame = stub_frame.sender(®_map);
1194 return caller_frame.is_deoptimized_frame();
1195 }
1196
1197
1198 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1199 // create input type (domain)
1200 const Type **fields = TypeTuple::fields(1);
1201 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1202 // // The JavaThread* is passed to each routine as the last argument
1203 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1204 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1205
1206 // create result type (range)
1207 fields = TypeTuple::fields(0);
1208
1209 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1210
1211 return TypeFunc::make(domain,range);
1212 }
1213
1214
1215 //-----------------------------------------------------------------------------
1216 // Dtrace support. entry and exit probes have the same signature
1217 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1218 // create input type (domain)
1219 const Type **fields = TypeTuple::fields(2);
1220 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1221 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1222 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1223
1224 // create result type (range)
1225 fields = TypeTuple::fields(0);
1226
1227 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1228
1229 return TypeFunc::make(domain,range);
1230 }
1231
1232 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1233 // create input type (domain)
1234 const Type **fields = TypeTuple::fields(2);
1235 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1236 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1237
1238 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1239
1240 // create result type (range)
1241 fields = TypeTuple::fields(0);
1242
1243 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1244
1245 return TypeFunc::make(domain,range);
1246 }
1247
1248
1249 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1250 assert(obj->is_oop(), "must be a valid oop");
1251 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1252 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1253 JRT_END
1254
1255 //-----------------------------------------------------------------------------
1256
1257 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1258
1259 //
1260 // dump the collected NamedCounters.
1261 //
1262 void OptoRuntime::print_named_counters() {
1263 int total_lock_count = 0;
1264 int eliminated_lock_count = 0;
1265
1266 NamedCounter* c = _named_counters;
1267 while (c) {
1268 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1269 int count = c->count();
1270 if (count > 0) {
1271 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1272 if (Verbose) {
1273 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1274 }
1275 total_lock_count += count;
1276 if (eliminated) {
1277 eliminated_lock_count += count;
1278 }
1279 }
1280 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1281 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1282 if (blc->nonzero()) {
1283 tty->print_cr("%s", c->name());
1284 blc->print_on(tty);
1285 }
1286 }
1287 c = c->next();
1288 }
1289 if (total_lock_count > 0) {
1290 tty->print_cr("dynamic locks: %d", total_lock_count);
1291 if (eliminated_lock_count) {
1292 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1293 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1294 }
1295 }
1296 }
1297
1298 //
1299 // Allocate a new NamedCounter. The JVMState is used to generate the
1300 // name which consists of method@line for the inlining tree.
1301 //
1302
1303 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1304 int max_depth = youngest_jvms->depth();
1305
1306 // Visit scopes from youngest to oldest.
1307 bool first = true;
1308 stringStream st;
1309 for (int depth = max_depth; depth >= 1; depth--) {
1310 JVMState* jvms = youngest_jvms->of_depth(depth);
1311 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1312 if (!first) {
1313 st.print(" ");
1314 } else {
1315 first = false;
1316 }
1317 int bci = jvms->bci();
1318 if (bci < 0) bci = 0;
1319 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1320 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1321 }
1322 NamedCounter* c;
1323 if (tag == NamedCounter::BiasedLockingCounter) {
1324 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1325 } else {
1326 c = new NamedCounter(strdup(st.as_string()), tag);
1327 }
1328
1329 // atomically add the new counter to the head of the list. We only
1330 // add counters so this is safe.
1331 NamedCounter* head;
1332 do {
1333 head = _named_counters;
1334 c->set_next(head);
1335 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1336 return c;
1337 }
1338
1339 //-----------------------------------------------------------------------------
1340 // Non-product code
1341 #ifndef PRODUCT
1342
1343 int trace_exception_counter = 0;
1344 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1345 ttyLocker ttyl;
1346 trace_exception_counter++;
1347 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1348 exception_oop->print_value();
1349 tty->print(" in ");
1350 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1351 if (blob->is_nmethod()) {
1352 ((nmethod*)blob)->method()->print_value();
1353 } else if (blob->is_runtime_stub()) {
1354 tty->print("<runtime-stub>");
1355 } else {
1356 tty->print("<unknown>");
1357 }
1358 tty->print(" at " INTPTR_FORMAT, exception_pc);
1359 tty->print_cr("]");
1360 }
1361
1362 #endif // PRODUCT
1363
1364
1365 # ifdef ENABLE_ZAP_DEAD_LOCALS
1366 // Called from call sites in compiled code with oop maps (actually safepoints)
1367 // Zaps dead locals in first java frame.
1368 // Is entry because may need to lock to generate oop maps
1369 // Currently, only used for compiler frames, but someday may be used
1370 // for interpreter frames, too.
1371
1372 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1373
1374 // avoid pointers to member funcs with these helpers
1375 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1376 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1377
1378
1379 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1380 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1381 assert(JavaThread::current() == thread, "is this needed?");
1382
1383 if ( !ZapDeadCompiledLocals ) return;
1384
1385 bool skip = false;
1386
1387 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1388 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1389 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1390 warning("starting zapping after skipping");
1391
1392 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1393 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1394 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1395 warning("about to zap last zap");
1396
1397 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1398
1399 if ( skip ) return;
1400
1401 // find java frame and zap it
1402
1403 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1404 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1405 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1406 return;
1407 }
1408 }
1409 warning("no frame found to zap in zap_dead_Java_locals_C");
1410 }
1411
1412 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1413 zap_dead_java_or_native_locals(thread, is_java_frame);
1414 JRT_END
1415
1416 // The following does not work because for one thing, the
1417 // thread state is wrong; it expects java, but it is native.
1418 // Also, the invariants in a native stub are different and
1419 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1420 // in there.
1421 // So for now, we do not zap in native stubs.
1422
1423 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1424 zap_dead_java_or_native_locals(thread, is_native_frame);
1425 JRT_END
1426
1427 # endif