1 /*
2 * Copyright (c) 1998, 2014, 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/graphKit.hpp"
52 #include "opto/machnode.hpp"
53 #include "opto/matcher.hpp"
54 #include "opto/memnode.hpp"
55 #include "opto/mulnode.hpp"
56 #include "opto/runtime.hpp"
57 #include "opto/subnode.hpp"
58 #include "runtime/fprofiler.hpp"
59 #include "runtime/handles.inline.hpp"
60 #include "runtime/interfaceSupport.hpp"
61 #include "runtime/javaCalls.hpp"
62 #include "runtime/sharedRuntime.hpp"
63 #include "runtime/signature.hpp"
64 #include "runtime/threadCritical.hpp"
65 #include "runtime/vframe.hpp"
66 #include "runtime/vframeArray.hpp"
67 #include "runtime/vframe_hp.hpp"
68 #include "utilities/copy.hpp"
69 #include "utilities/preserveException.hpp"
70 #ifdef TARGET_ARCH_MODEL_x86_32
71 # include "adfiles/ad_x86_32.hpp"
72 #endif
73 #ifdef TARGET_ARCH_MODEL_x86_64
74 # include "adfiles/ad_x86_64.hpp"
75 #endif
76 #ifdef TARGET_ARCH_MODEL_sparc
77 # include "adfiles/ad_sparc.hpp"
78 #endif
79 #ifdef TARGET_ARCH_MODEL_zero
80 # include "adfiles/ad_zero.hpp"
81 #endif
82 #ifdef TARGET_ARCH_MODEL_arm
83 # include "adfiles/ad_arm.hpp"
84 #endif
85 #ifdef TARGET_ARCH_MODEL_ppc_32
86 # include "adfiles/ad_ppc_32.hpp"
87 #endif
88 #ifdef TARGET_ARCH_MODEL_ppc_64
89 # include "adfiles/ad_ppc_64.hpp"
90 #endif
91
92
93 // For debugging purposes:
94 // To force FullGCALot inside a runtime function, add the following two lines
95 //
96 // Universe::release_fullgc_alot_dummy();
97 // MarkSweep::invoke(0, "Debugging");
98 //
99 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
100
101
102
103
104 // Compiled code entry points
105 address OptoRuntime::_new_instance_Java = NULL;
106 address OptoRuntime::_new_array_Java = NULL;
107 address OptoRuntime::_new_array_nozero_Java = NULL;
108 address OptoRuntime::_multianewarray2_Java = NULL;
109 address OptoRuntime::_multianewarray3_Java = NULL;
110 address OptoRuntime::_multianewarray4_Java = NULL;
111 address OptoRuntime::_multianewarray5_Java = NULL;
112 address OptoRuntime::_multianewarrayN_Java = NULL;
113 address OptoRuntime::_g1_wb_pre_Java = NULL;
114 address OptoRuntime::_g1_wb_post_Java = NULL;
115 address OptoRuntime::_vtable_must_compile_Java = NULL;
116 address OptoRuntime::_complete_monitor_locking_Java = NULL;
117 address OptoRuntime::_rethrow_Java = NULL;
118
119 address OptoRuntime::_slow_arraycopy_Java = NULL;
120 address OptoRuntime::_register_finalizer_Java = NULL;
121
122 # ifdef ENABLE_ZAP_DEAD_LOCALS
123 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
124 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
125 # endif
126
127 ExceptionBlob* OptoRuntime::_exception_blob;
128
129 // This should be called in an assertion at the start of OptoRuntime routines
130 // which are entered from compiled code (all of them)
131 #ifdef ASSERT
132 static bool check_compiled_frame(JavaThread* thread) {
133 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
134 RegisterMap map(thread, false);
135 frame caller = thread->last_frame().sender(&map);
136 assert(caller.is_compiled_frame(), "not being called from compiled like code");
137 return true;
138 }
139 #endif // ASSERT
140
141
142 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
143 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \
144 if (var == NULL) { return false; }
145
146 bool 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 return true;
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 fields[TypeFunc::Parms+0] = TypeInt::INT; // trap_reason (deopt reason and action)
574 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
575
576 // create result type (range)
577 fields = TypeTuple::fields(0);
578 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
579
580 return TypeFunc::make(domain, range);
581 }
582
583 # ifdef ENABLE_ZAP_DEAD_LOCALS
584 // Type used for stub generation for zap_dead_locals.
585 // No inputs or outputs
586 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
587 // create input type (domain)
588 const Type **fields = TypeTuple::fields(0);
589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
590
591 // create result type (range)
592 fields = TypeTuple::fields(0);
593 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
594
595 return TypeFunc::make(domain,range);
596 }
597 # endif
598
599
600 //-----------------------------------------------------------------------------
601 // Monitor Handling
602 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
603 // create input type (domain)
604 const Type **fields = TypeTuple::fields(2);
605 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
606 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
607 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
608
609 // create result type (range)
610 fields = TypeTuple::fields(0);
611
612 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
613
614 return TypeFunc::make(domain,range);
615 }
616
617
618 //-----------------------------------------------------------------------------
619 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
620 // create input type (domain)
621 const Type **fields = TypeTuple::fields(2);
622 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
623 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
624 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
625
626 // create result type (range)
627 fields = TypeTuple::fields(0);
628
629 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
630
631 return TypeFunc::make(domain,range);
632 }
633
634 const TypeFunc* OptoRuntime::flush_windows_Type() {
635 // create input type (domain)
636 const Type** fields = TypeTuple::fields(1);
637 fields[TypeFunc::Parms+0] = NULL; // void
638 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
639
640 // create result type
641 fields = TypeTuple::fields(1);
642 fields[TypeFunc::Parms+0] = NULL; // void
643 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
644
645 return TypeFunc::make(domain, range);
646 }
647
648 const TypeFunc* OptoRuntime::l2f_Type() {
649 // create input type (domain)
650 const Type **fields = TypeTuple::fields(2);
651 fields[TypeFunc::Parms+0] = TypeLong::LONG;
652 fields[TypeFunc::Parms+1] = Type::HALF;
653 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
654
655 // create result type (range)
656 fields = TypeTuple::fields(1);
657 fields[TypeFunc::Parms+0] = Type::FLOAT;
658 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
659
660 return TypeFunc::make(domain, range);
661 }
662
663 const TypeFunc* OptoRuntime::modf_Type() {
664 const Type **fields = TypeTuple::fields(2);
665 fields[TypeFunc::Parms+0] = Type::FLOAT;
666 fields[TypeFunc::Parms+1] = Type::FLOAT;
667 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
668
669 // create result type (range)
670 fields = TypeTuple::fields(1);
671 fields[TypeFunc::Parms+0] = Type::FLOAT;
672
673 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
674
675 return TypeFunc::make(domain, range);
676 }
677
678 const TypeFunc *OptoRuntime::Math_D_D_Type() {
679 // create input type (domain)
680 const Type **fields = TypeTuple::fields(2);
681 // Symbol* name of class to be loaded
682 fields[TypeFunc::Parms+0] = Type::DOUBLE;
683 fields[TypeFunc::Parms+1] = Type::HALF;
684 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
685
686 // create result type (range)
687 fields = TypeTuple::fields(2);
688 fields[TypeFunc::Parms+0] = Type::DOUBLE;
689 fields[TypeFunc::Parms+1] = Type::HALF;
690 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
691
692 return TypeFunc::make(domain, range);
693 }
694
695 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
696 const Type **fields = TypeTuple::fields(4);
697 fields[TypeFunc::Parms+0] = Type::DOUBLE;
698 fields[TypeFunc::Parms+1] = Type::HALF;
699 fields[TypeFunc::Parms+2] = Type::DOUBLE;
700 fields[TypeFunc::Parms+3] = Type::HALF;
701 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
702
703 // create result type (range)
704 fields = TypeTuple::fields(2);
705 fields[TypeFunc::Parms+0] = Type::DOUBLE;
706 fields[TypeFunc::Parms+1] = Type::HALF;
707 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
708
709 return TypeFunc::make(domain, range);
710 }
711
712 //-------------- currentTimeMillis, currentTimeNanos, etc
713
714 const TypeFunc* OptoRuntime::void_long_Type() {
715 // create input type (domain)
716 const Type **fields = TypeTuple::fields(0);
717 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
718
719 // create result type (range)
720 fields = TypeTuple::fields(2);
721 fields[TypeFunc::Parms+0] = TypeLong::LONG;
722 fields[TypeFunc::Parms+1] = Type::HALF;
723 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
724
725 return TypeFunc::make(domain, range);
726 }
727
728 // arraycopy stub variations:
729 enum ArrayCopyType {
730 ac_fast, // void(ptr, ptr, size_t)
731 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
732 ac_slow, // void(ptr, int, ptr, int, int)
733 ac_generic // int(ptr, int, ptr, int, int)
734 };
735
736 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
737 // create input type (domain)
738 int num_args = (act == ac_fast ? 3 : 5);
739 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
740 int argcnt = num_args;
741 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
742 const Type** fields = TypeTuple::fields(argcnt);
743 int argp = TypeFunc::Parms;
744 fields[argp++] = TypePtr::NOTNULL; // src
745 if (num_size_args == 0) {
746 fields[argp++] = TypeInt::INT; // src_pos
747 }
748 fields[argp++] = TypePtr::NOTNULL; // dest
749 if (num_size_args == 0) {
750 fields[argp++] = TypeInt::INT; // dest_pos
751 fields[argp++] = TypeInt::INT; // length
752 }
753 while (num_size_args-- > 0) {
754 fields[argp++] = TypeX_X; // size in whatevers (size_t)
755 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
756 }
757 if (act == ac_checkcast) {
758 fields[argp++] = TypePtr::NOTNULL; // super_klass
759 }
760 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
761 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
762
763 // create result type if needed
764 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
765 fields = TypeTuple::fields(1);
766 if (retcnt == 0)
767 fields[TypeFunc::Parms+0] = NULL; // void
768 else
769 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
770 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
771 return TypeFunc::make(domain, range);
772 }
773
774 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
775 // This signature is simple: Two base pointers and a size_t.
776 return make_arraycopy_Type(ac_fast);
777 }
778
779 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
780 // An extension of fast_arraycopy_Type which adds type checking.
781 return make_arraycopy_Type(ac_checkcast);
782 }
783
784 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
785 // This signature is exactly the same as System.arraycopy.
786 // There are no intptr_t (int/long) arguments.
787 return make_arraycopy_Type(ac_slow);
788 }
789
790 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
791 // This signature is like System.arraycopy, except that it returns status.
792 return make_arraycopy_Type(ac_generic);
793 }
794
795
796 const TypeFunc* OptoRuntime::array_fill_Type() {
797 const Type** fields;
798 int argp = TypeFunc::Parms;
799 if (CCallingConventionRequiresIntsAsLongs) {
800 // create input type (domain): pointer, int, size_t
801 fields = TypeTuple::fields(3 LP64_ONLY( + 2));
802 fields[argp++] = TypePtr::NOTNULL;
803 fields[argp++] = TypeLong::LONG;
804 fields[argp++] = Type::HALF;
805 } else {
806 // create input type (domain): pointer, int, size_t
807 fields = TypeTuple::fields(3 LP64_ONLY( + 1));
808 fields[argp++] = TypePtr::NOTNULL;
809 fields[argp++] = TypeInt::INT;
810 }
811 fields[argp++] = TypeX_X; // size in whatevers (size_t)
812 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
813 const TypeTuple *domain = TypeTuple::make(argp, fields);
814
815 // create result type
816 fields = TypeTuple::fields(1);
817 fields[TypeFunc::Parms+0] = NULL; // void
818 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
819
820 return TypeFunc::make(domain, range);
821 }
822
823 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
824 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
825 // create input type (domain)
826 int num_args = 3;
827 if (Matcher::pass_original_key_for_aes()) {
828 num_args = 4;
829 }
830 int argcnt = num_args;
831 const Type** fields = TypeTuple::fields(argcnt);
832 int argp = TypeFunc::Parms;
833 fields[argp++] = TypePtr::NOTNULL; // src
834 fields[argp++] = TypePtr::NOTNULL; // dest
835 fields[argp++] = TypePtr::NOTNULL; // k array
836 if (Matcher::pass_original_key_for_aes()) {
837 fields[argp++] = TypePtr::NOTNULL; // original k array
838 }
839 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
840 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
841
842 // no result type needed
843 fields = TypeTuple::fields(1);
844 fields[TypeFunc::Parms+0] = NULL; // void
845 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
846 return TypeFunc::make(domain, range);
847 }
848
849 /**
850 * int updateBytesCRC32(int crc, byte* b, int len)
851 */
852 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
853 // create input type (domain)
854 int num_args = 3;
855 int argcnt = num_args;
856 const Type** fields = TypeTuple::fields(argcnt);
857 int argp = TypeFunc::Parms;
858 fields[argp++] = TypeInt::INT; // crc
859 fields[argp++] = TypePtr::NOTNULL; // src
860 fields[argp++] = TypeInt::INT; // len
861 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
862 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
863
864 // result type needed
865 fields = TypeTuple::fields(1);
866 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
867 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
868 return TypeFunc::make(domain, range);
869 }
870
871 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int
872 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
873 // create input type (domain)
874 int num_args = 5;
875 if (Matcher::pass_original_key_for_aes()) {
876 num_args = 6;
877 }
878 int argcnt = num_args;
879 const Type** fields = TypeTuple::fields(argcnt);
880 int argp = TypeFunc::Parms;
881 fields[argp++] = TypePtr::NOTNULL; // src
882 fields[argp++] = TypePtr::NOTNULL; // dest
883 fields[argp++] = TypePtr::NOTNULL; // k array
884 fields[argp++] = TypePtr::NOTNULL; // r array
885 fields[argp++] = TypeInt::INT; // src len
886 if (Matcher::pass_original_key_for_aes()) {
887 fields[argp++] = TypePtr::NOTNULL; // original k array
888 }
889 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
890 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
891
892 // returning cipher len (int)
893 fields = TypeTuple::fields(1);
894 fields[TypeFunc::Parms+0] = TypeInt::INT;
895 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
896 return TypeFunc::make(domain, range);
897 }
898
899 //------------- Interpreter state access for on stack replacement
900 const TypeFunc* OptoRuntime::osr_end_Type() {
901 // create input type (domain)
902 const Type **fields = TypeTuple::fields(1);
903 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
904 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
905
906 // create result type
907 fields = TypeTuple::fields(1);
908 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
909 fields[TypeFunc::Parms+0] = NULL; // void
910 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
911 return TypeFunc::make(domain, range);
912 }
913
914 //-------------- methodData update helpers
915
916 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
917 // create input type (domain)
918 const Type **fields = TypeTuple::fields(2);
919 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
920 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
921 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
922
923 // create result type
924 fields = TypeTuple::fields(1);
925 fields[TypeFunc::Parms+0] = NULL; // void
926 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
927 return TypeFunc::make(domain,range);
928 }
929
930 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
931 if (receiver == NULL) return;
932 Klass* receiver_klass = receiver->klass();
933
934 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
935 int empty_row = -1; // free row, if any is encountered
936
937 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
938 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
939 // if (vc->receiver(row) == receiver_klass)
940 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
941 intptr_t row_recv = *(mdp + receiver_off);
942 if (row_recv == (intptr_t) receiver_klass) {
943 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
944 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
945 *(mdp + count_off) += DataLayout::counter_increment;
946 return;
947 } else if (row_recv == 0) {
948 // else if (vc->receiver(row) == NULL)
949 empty_row = (int) row;
950 }
951 }
952
953 if (empty_row != -1) {
954 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
955 // vc->set_receiver(empty_row, receiver_klass);
956 *(mdp + receiver_off) = (intptr_t) receiver_klass;
957 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
958 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
959 *(mdp + count_off) = DataLayout::counter_increment;
960 } else {
961 // Receiver did not match any saved receiver and there is no empty row for it.
962 // Increment total counter to indicate polymorphic case.
963 intptr_t* count_p = (intptr_t*)(((uint8_t*)(data)) + in_bytes(CounterData::count_offset()));
964 *count_p += DataLayout::counter_increment;
965 }
966 JRT_END
967
968 //-------------------------------------------------------------------------------------
969 // register policy
970
971 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
972 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
973 switch (register_save_policy[reg]) {
974 case 'C': return false; //SOC
975 case 'E': return true ; //SOE
976 case 'N': return false; //NS
977 case 'A': return false; //AS
978 }
979 ShouldNotReachHere();
980 return false;
981 }
982
983 //-----------------------------------------------------------------------
984 // Exceptions
985 //
986
987 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
988
989 // The method is an entry that is always called by a C++ method not
990 // directly from compiled code. Compiled code will call the C++ method following.
991 // We can't allow async exception to be installed during exception processing.
992 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
993
994 // Do not confuse exception_oop with pending_exception. The exception_oop
995 // is only used to pass arguments into the method. Not for general
996 // exception handling. DO NOT CHANGE IT to use pending_exception, since
997 // the runtime stubs checks this on exit.
998 assert(thread->exception_oop() != NULL, "exception oop is found");
999 address handler_address = NULL;
1000
1001 Handle exception(thread, thread->exception_oop());
1002 address pc = thread->exception_pc();
1003
1004 // Clear out the exception oop and pc since looking up an
1005 // exception handler can cause class loading, which might throw an
1006 // exception and those fields are expected to be clear during
1007 // normal bytecode execution.
1008 thread->clear_exception_oop_and_pc();
1009
1010 if (TraceExceptions) {
1011 trace_exception(exception(), pc, "");
1012 }
1013
1014 // for AbortVMOnException flag
1015 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
1016
1017 #ifdef ASSERT
1018 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1019 // should throw an exception here
1020 ShouldNotReachHere();
1021 }
1022 #endif
1023
1024 // new exception handling: this method is entered only from adapters
1025 // exceptions from compiled java methods are handled in compiled code
1026 // using rethrow node
1027
1028 nm = CodeCache::find_nmethod(pc);
1029 assert(nm != NULL, "No NMethod found");
1030 if (nm->is_native_method()) {
1031 fatal("Native method should not have path to exception handling");
1032 } else {
1033 // we are switching to old paradigm: search for exception handler in caller_frame
1034 // instead in exception handler of caller_frame.sender()
1035
1036 if (JvmtiExport::can_post_on_exceptions()) {
1037 // "Full-speed catching" is not necessary here,
1038 // since we're notifying the VM on every catch.
1039 // Force deoptimization and the rest of the lookup
1040 // will be fine.
1041 deoptimize_caller_frame(thread);
1042 }
1043
1044 // Check the stack guard pages. If enabled, look for handler in this frame;
1045 // otherwise, forcibly unwind the frame.
1046 //
1047 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1048 bool force_unwind = !thread->reguard_stack();
1049 bool deopting = false;
1050 if (nm->is_deopt_pc(pc)) {
1051 deopting = true;
1052 RegisterMap map(thread, false);
1053 frame deoptee = thread->last_frame().sender(&map);
1054 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1055 // Adjust the pc back to the original throwing pc
1056 pc = deoptee.pc();
1057 }
1058
1059 // If we are forcing an unwind because of stack overflow then deopt is
1060 // irrelevant since we are throwing the frame away anyway.
1061
1062 if (deopting && !force_unwind) {
1063 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1064 } else {
1065
1066 handler_address =
1067 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1068
1069 if (handler_address == NULL) {
1070 Handle original_exception(thread, exception());
1071 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1072 assert (handler_address != NULL, "must have compiled handler");
1073 // Update the exception cache only when the unwind was not forced
1074 // and there didn't happen another exception during the computation of the
1075 // compiled exception handler.
1076 if (!force_unwind && original_exception() == exception()) {
1077 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1078 }
1079 } else {
1080 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1081 }
1082 }
1083
1084 thread->set_exception_pc(pc);
1085 thread->set_exception_handler_pc(handler_address);
1086
1087 // Check if the exception PC is a MethodHandle call site.
1088 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1089 }
1090
1091 // Restore correct return pc. Was saved above.
1092 thread->set_exception_oop(exception());
1093 return handler_address;
1094
1095 JRT_END
1096
1097 // We are entering here from exception_blob
1098 // If there is a compiled exception handler in this method, we will continue there;
1099 // otherwise we will unwind the stack and continue at the caller of top frame method
1100 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1101 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1102 // we looked up the handler for has been deoptimized in the meantime. If it has been
1103 // we must not use the handler and instead return the deopt blob.
1104 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1105 //
1106 // We are in Java not VM and in debug mode we have a NoHandleMark
1107 //
1108 #ifndef PRODUCT
1109 SharedRuntime::_find_handler_ctr++; // find exception handler
1110 #endif
1111 debug_only(NoHandleMark __hm;)
1112 nmethod* nm = NULL;
1113 address handler_address = NULL;
1114 {
1115 // Enter the VM
1116
1117 ResetNoHandleMark rnhm;
1118 handler_address = handle_exception_C_helper(thread, nm);
1119 }
1120
1121 // Back in java: Use no oops, DON'T safepoint
1122
1123 // Now check to see if the handler we are returning is in a now
1124 // deoptimized frame
1125
1126 if (nm != NULL) {
1127 RegisterMap map(thread, false);
1128 frame caller = thread->last_frame().sender(&map);
1129 #ifdef ASSERT
1130 assert(caller.is_compiled_frame(), "must be");
1131 #endif // ASSERT
1132 if (caller.is_deoptimized_frame()) {
1133 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1134 }
1135 }
1136 return handler_address;
1137 }
1138
1139 //------------------------------rethrow----------------------------------------
1140 // We get here after compiled code has executed a 'RethrowNode'. The callee
1141 // is either throwing or rethrowing an exception. The callee-save registers
1142 // have been restored, synchronized objects have been unlocked and the callee
1143 // stack frame has been removed. The return address was passed in.
1144 // Exception oop is passed as the 1st argument. This routine is then called
1145 // from the stub. On exit, we know where to jump in the caller's code.
1146 // After this C code exits, the stub will pop his frame and end in a jump
1147 // (instead of a return). We enter the caller's default handler.
1148 //
1149 // This must be JRT_LEAF:
1150 // - caller will not change its state as we cannot block on exit,
1151 // therefore raw_exception_handler_for_return_address is all it takes
1152 // to handle deoptimized blobs
1153 //
1154 // However, there needs to be a safepoint check in the middle! So compiled
1155 // safepoints are completely watertight.
1156 //
1157 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1158 //
1159 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1160 //
1161 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1162 #ifndef PRODUCT
1163 SharedRuntime::_rethrow_ctr++; // count rethrows
1164 #endif
1165 assert (exception != NULL, "should have thrown a NULLPointerException");
1166 #ifdef ASSERT
1167 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1168 // should throw an exception here
1169 ShouldNotReachHere();
1170 }
1171 #endif
1172
1173 thread->set_vm_result(exception);
1174 // Frame not compiled (handles deoptimization blob)
1175 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1176 }
1177
1178
1179 const TypeFunc *OptoRuntime::rethrow_Type() {
1180 // create input type (domain)
1181 const Type **fields = TypeTuple::fields(1);
1182 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1183 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1184
1185 // create result type (range)
1186 fields = TypeTuple::fields(1);
1187 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1188 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1189
1190 return TypeFunc::make(domain, range);
1191 }
1192
1193
1194 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1195 // Deoptimize the caller before continuing, as the compiled
1196 // exception handler table may not be valid.
1197 if (!StressCompiledExceptionHandlers && doit) {
1198 deoptimize_caller_frame(thread);
1199 }
1200 }
1201
1202 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1203 // Called from within the owner thread, so no need for safepoint
1204 RegisterMap reg_map(thread);
1205 frame stub_frame = thread->last_frame();
1206 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1207 frame caller_frame = stub_frame.sender(®_map);
1208
1209 // Deoptimize the caller frame.
1210 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1211 }
1212
1213
1214 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1215 // Called from within the owner thread, so no need for safepoint
1216 RegisterMap reg_map(thread);
1217 frame stub_frame = thread->last_frame();
1218 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1219 frame caller_frame = stub_frame.sender(®_map);
1220 return caller_frame.is_deoptimized_frame();
1221 }
1222
1223
1224 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1225 // create input type (domain)
1226 const Type **fields = TypeTuple::fields(1);
1227 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1228 // // The JavaThread* is passed to each routine as the last argument
1229 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1230 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1231
1232 // create result type (range)
1233 fields = TypeTuple::fields(0);
1234
1235 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1236
1237 return TypeFunc::make(domain,range);
1238 }
1239
1240
1241 //-----------------------------------------------------------------------------
1242 // Dtrace support. entry and exit probes have the same signature
1243 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1244 // create input type (domain)
1245 const Type **fields = TypeTuple::fields(2);
1246 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1247 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1248 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1249
1250 // create result type (range)
1251 fields = TypeTuple::fields(0);
1252
1253 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1254
1255 return TypeFunc::make(domain,range);
1256 }
1257
1258 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1259 // create input type (domain)
1260 const Type **fields = TypeTuple::fields(2);
1261 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1262 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1263
1264 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1265
1266 // create result type (range)
1267 fields = TypeTuple::fields(0);
1268
1269 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1270
1271 return TypeFunc::make(domain,range);
1272 }
1273
1274
1275 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1276 assert(obj->is_oop(), "must be a valid oop");
1277 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1278 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1279 JRT_END
1280
1281 //-----------------------------------------------------------------------------
1282
1283 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1284
1285 //
1286 // dump the collected NamedCounters.
1287 //
1288 void OptoRuntime::print_named_counters() {
1289 int total_lock_count = 0;
1290 int eliminated_lock_count = 0;
1291
1292 NamedCounter* c = _named_counters;
1293 while (c) {
1294 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1295 int count = c->count();
1296 if (count > 0) {
1297 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1298 if (Verbose) {
1299 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1300 }
1301 total_lock_count += count;
1302 if (eliminated) {
1303 eliminated_lock_count += count;
1304 }
1305 }
1306 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1307 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1308 if (blc->nonzero()) {
1309 tty->print_cr("%s", c->name());
1310 blc->print_on(tty);
1311 }
1312 #if INCLUDE_RTM_OPT
1313 } else if (c->tag() == NamedCounter::RTMLockingCounter) {
1314 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters();
1315 if (rlc->nonzero()) {
1316 tty->print_cr("%s", c->name());
1317 rlc->print_on(tty);
1318 }
1319 #endif
1320 }
1321 c = c->next();
1322 }
1323 if (total_lock_count > 0) {
1324 tty->print_cr("dynamic locks: %d", total_lock_count);
1325 if (eliminated_lock_count) {
1326 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1327 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1328 }
1329 }
1330 }
1331
1332 //
1333 // Allocate a new NamedCounter. The JVMState is used to generate the
1334 // name which consists of method@line for the inlining tree.
1335 //
1336
1337 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1338 int max_depth = youngest_jvms->depth();
1339
1340 // Visit scopes from youngest to oldest.
1341 bool first = true;
1342 stringStream st;
1343 for (int depth = max_depth; depth >= 1; depth--) {
1344 JVMState* jvms = youngest_jvms->of_depth(depth);
1345 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1346 if (!first) {
1347 st.print(" ");
1348 } else {
1349 first = false;
1350 }
1351 int bci = jvms->bci();
1352 if (bci < 0) bci = 0;
1353 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1354 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1355 }
1356 NamedCounter* c;
1357 if (tag == NamedCounter::BiasedLockingCounter) {
1358 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1359 } else if (tag == NamedCounter::RTMLockingCounter) {
1360 c = new RTMLockingNamedCounter(strdup(st.as_string()));
1361 } else {
1362 c = new NamedCounter(strdup(st.as_string()), tag);
1363 }
1364
1365 // atomically add the new counter to the head of the list. We only
1366 // add counters so this is safe.
1367 NamedCounter* head;
1368 do {
1369 c->set_next(NULL);
1370 head = _named_counters;
1371 c->set_next(head);
1372 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1373 return c;
1374 }
1375
1376 //-----------------------------------------------------------------------------
1377 // Non-product code
1378 #ifndef PRODUCT
1379
1380 int trace_exception_counter = 0;
1381 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1382 ttyLocker ttyl;
1383 trace_exception_counter++;
1384 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1385 exception_oop->print_value();
1386 tty->print(" in ");
1387 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1388 if (blob->is_nmethod()) {
1389 nmethod* nm = blob->as_nmethod_or_null();
1390 nm->method()->print_value();
1391 } else if (blob->is_runtime_stub()) {
1392 tty->print("<runtime-stub>");
1393 } else {
1394 tty->print("<unknown>");
1395 }
1396 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc));
1397 tty->print_cr("]");
1398 }
1399
1400 #endif // PRODUCT
1401
1402
1403 # ifdef ENABLE_ZAP_DEAD_LOCALS
1404 // Called from call sites in compiled code with oop maps (actually safepoints)
1405 // Zaps dead locals in first java frame.
1406 // Is entry because may need to lock to generate oop maps
1407 // Currently, only used for compiler frames, but someday may be used
1408 // for interpreter frames, too.
1409
1410 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1411
1412 // avoid pointers to member funcs with these helpers
1413 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1414 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1415
1416
1417 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1418 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1419 assert(JavaThread::current() == thread, "is this needed?");
1420
1421 if ( !ZapDeadCompiledLocals ) return;
1422
1423 bool skip = false;
1424
1425 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1426 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1427 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1428 warning("starting zapping after skipping");
1429
1430 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1431 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1432 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1433 warning("about to zap last zap");
1434
1435 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1436
1437 if ( skip ) return;
1438
1439 // find java frame and zap it
1440
1441 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1442 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1443 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1444 return;
1445 }
1446 }
1447 warning("no frame found to zap in zap_dead_Java_locals_C");
1448 }
1449
1450 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1451 zap_dead_java_or_native_locals(thread, is_java_frame);
1452 JRT_END
1453
1454 // The following does not work because for one thing, the
1455 // thread state is wrong; it expects java, but it is native.
1456 // Also, the invariants in a native stub are different and
1457 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1458 // in there.
1459 // So for now, we do not zap in native stubs.
1460
1461 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1462 zap_dead_java_or_native_locals(thread, is_native_frame);
1463 JRT_END
1464
1465 # endif