1 /*
2 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/connode.hpp"
52 #include "opto/graphKit.hpp"
53 #include "opto/machnode.hpp"
54 #include "opto/matcher.hpp"
55 #include "opto/memnode.hpp"
56 #include "opto/mulnode.hpp"
57 #include "opto/runtime.hpp"
58 #include "opto/subnode.hpp"
59 #include "runtime/fprofiler.hpp"
60 #include "runtime/handles.inline.hpp"
61 #include "runtime/interfaceSupport.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/signature.hpp"
65 #include "runtime/threadCritical.hpp"
66 #include "runtime/vframe.hpp"
67 #include "runtime/vframeArray.hpp"
68 #include "runtime/vframe_hp.hpp"
69 #include "utilities/copy.hpp"
70 #include "utilities/preserveException.hpp"
71 #ifdef TARGET_ARCH_MODEL_x86_32
72 # include "adfiles/ad_x86_32.hpp"
73 #endif
74 #ifdef TARGET_ARCH_MODEL_x86_64
75 # include "adfiles/ad_x86_64.hpp"
76 #endif
77 #ifdef TARGET_ARCH_MODEL_sparc
78 # include "adfiles/ad_sparc.hpp"
79 #endif
80 #ifdef TARGET_ARCH_MODEL_zero
81 # include "adfiles/ad_zero.hpp"
82 #endif
83 #ifdef TARGET_ARCH_MODEL_arm
84 # include "adfiles/ad_arm.hpp"
85 #endif
86 #ifdef TARGET_ARCH_MODEL_ppc
87 # include "adfiles/ad_ppc.hpp"
88 #endif
89
90
91 // For debugging purposes:
92 // To force FullGCALot inside a runtime function, add the following two lines
93 //
94 // Universe::release_fullgc_alot_dummy();
95 // MarkSweep::invoke(0, "Debugging");
96 //
97 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
98
99
100
101
102 // Compiled code entry points
103 address OptoRuntime::_new_instance_Java = NULL;
104 address OptoRuntime::_new_array_Java = NULL;
105 address OptoRuntime::_new_array_nozero_Java = NULL;
106 address OptoRuntime::_multianewarray2_Java = NULL;
107 address OptoRuntime::_multianewarray3_Java = NULL;
108 address OptoRuntime::_multianewarray4_Java = NULL;
109 address OptoRuntime::_multianewarray5_Java = NULL;
110 address OptoRuntime::_multianewarrayN_Java = NULL;
111 address OptoRuntime::_g1_wb_pre_Java = NULL;
112 address OptoRuntime::_g1_wb_post_Java = NULL;
113 address OptoRuntime::_vtable_must_compile_Java = NULL;
114 address OptoRuntime::_complete_monitor_locking_Java = NULL;
115 address OptoRuntime::_rethrow_Java = NULL;
116
117 address OptoRuntime::_slow_arraycopy_Java = NULL;
118 address OptoRuntime::_register_finalizer_Java = NULL;
119
120 # ifdef ENABLE_ZAP_DEAD_LOCALS
121 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
122 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
123 # endif
124
125 ExceptionBlob* OptoRuntime::_exception_blob;
126
127 // This should be called in an assertion at the start of OptoRuntime routines
128 // which are entered from compiled code (all of them)
129 #ifndef PRODUCT
130 static bool check_compiled_frame(JavaThread* thread) {
131 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
132 #ifdef ASSERT
133 RegisterMap map(thread, false);
134 frame caller = thread->last_frame().sender(&map);
135 assert(caller.is_compiled_frame(), "not being called from compiled like code");
136 #endif /* ASSERT */
137 return true;
138 }
139 #endif
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
145 void OptoRuntime::generate(ciEnv* env) {
146
147 generate_exception_blob();
148
149 // Note: tls: Means fetching the return oop out of the thread-local storage
150 //
151 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
152 // -------------------------------------------------------------------------------------------------------------------------------
153 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
154 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
155 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false);
156 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
157 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
158 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
159 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
160 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false);
161 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
162 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
163 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false);
164 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
165
166 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
167 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
168
169 # ifdef ENABLE_ZAP_DEAD_LOCALS
170 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
171 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
172 # endif
173
174 }
175
176 #undef gen
177
178
179 // Helper method to do generation of RunTimeStub's
180 address OptoRuntime::generate_stub( ciEnv* env,
181 TypeFunc_generator gen, address C_function,
182 const char *name, int is_fancy_jump,
183 bool pass_tls,
184 bool save_argument_registers,
185 bool return_pc ) {
186 ResourceMark rm;
187 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
188 return C.stub_entry_point();
189 }
190
191 const char* OptoRuntime::stub_name(address entry) {
192 #ifndef PRODUCT
193 CodeBlob* cb = CodeCache::find_blob(entry);
194 RuntimeStub* rs =(RuntimeStub *)cb;
195 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
196 return rs->name();
197 #else
198 // Fast implementation for product mode (maybe it should be inlined too)
199 return "runtime stub";
200 #endif
201 }
202
203
204 //=============================================================================
205 // Opto compiler runtime routines
206 //=============================================================================
207
208
209 //=============================allocation======================================
210 // We failed the fast-path allocation. Now we need to do a scavenge or GC
211 // and try allocation again.
212
213 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
214 // After any safepoint, just before going back to compiled code,
215 // we inform the GC that we will be doing initializing writes to
216 // this object in the future without emitting card-marks, so
217 // GC may take any compensating steps.
218 // NOTE: Keep this code consistent with GraphKit::store_barrier.
219
220 oop new_obj = thread->vm_result();
221 if (new_obj == NULL) return;
222
223 assert(Universe::heap()->can_elide_tlab_store_barriers(),
224 "compiler must check this first");
225 // GC may decide to give back a safer copy of new_obj.
226 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
227 thread->set_vm_result(new_obj);
228 }
229
230 // object allocation
231 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread))
232 JRT_BLOCK;
233 #ifndef PRODUCT
234 SharedRuntime::_new_instance_ctr++; // new instance requires GC
235 #endif
236 assert(check_compiled_frame(thread), "incorrect caller");
237
238 // These checks are cheap to make and support reflective allocation.
239 int lh = Klass::cast(klass)->layout_helper();
240 if (Klass::layout_helper_needs_slow_path(lh)
241 || !instanceKlass::cast(klass)->is_initialized()) {
242 KlassHandle kh(THREAD, klass);
243 kh->check_valid_for_instantiation(false, THREAD);
244 if (!HAS_PENDING_EXCEPTION) {
245 instanceKlass::cast(kh())->initialize(THREAD);
246 }
247 if (!HAS_PENDING_EXCEPTION) {
248 klass = kh();
249 } else {
250 klass = NULL;
251 }
252 }
253
254 if (klass != NULL) {
255 // Scavenge and allocate an instance.
256 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD);
257 thread->set_vm_result(result);
258
259 // Pass oops back through thread local storage. Our apparent type to Java
260 // is that we return an oop, but we can block on exit from this routine and
261 // a GC can trash the oop in C's return register. The generated stub will
262 // fetch the oop from TLS after any possible GC.
263 }
264
265 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
266 JRT_BLOCK_END;
267
268 if (GraphKit::use_ReduceInitialCardMarks()) {
269 // inform GC that we won't do card marks for initializing writes.
270 new_store_pre_barrier(thread);
271 }
272 JRT_END
273
274
275 // array allocation
276 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread))
277 JRT_BLOCK;
278 #ifndef PRODUCT
279 SharedRuntime::_new_array_ctr++; // new array requires GC
280 #endif
281 assert(check_compiled_frame(thread), "incorrect caller");
282
283 // Scavenge and allocate an instance.
284 oop result;
285
286 if (Klass::cast(array_type)->oop_is_typeArray()) {
287 // The oopFactory likes to work with the element type.
288 // (We could bypass the oopFactory, since it doesn't add much value.)
289 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
290 result = oopFactory::new_typeArray(elem_type, len, THREAD);
291 } else {
292 // Although the oopFactory likes to work with the elem_type,
293 // the compiler prefers the array_type, since it must already have
294 // that latter value in hand for the fast path.
295 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass();
296 result = oopFactory::new_objArray(elem_type, len, THREAD);
297 }
298
299 // Pass oops back through thread local storage. Our apparent type to Java
300 // is that we return an oop, but we can block on exit from this routine and
301 // a GC can trash the oop in C's return register. The generated stub will
302 // fetch the oop from TLS after any possible GC.
303 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
304 thread->set_vm_result(result);
305 JRT_BLOCK_END;
306
307 if (GraphKit::use_ReduceInitialCardMarks()) {
308 // inform GC that we won't do card marks for initializing writes.
309 new_store_pre_barrier(thread);
310 }
311 JRT_END
312
313 // array allocation without zeroing
314 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(klassOopDesc* array_type, int len, JavaThread *thread))
315 JRT_BLOCK;
316 #ifndef PRODUCT
317 SharedRuntime::_new_array_ctr++; // new array requires GC
318 #endif
319 assert(check_compiled_frame(thread), "incorrect caller");
320
321 // Scavenge and allocate an instance.
322 oop result;
323
324 assert(Klass::cast(array_type)->oop_is_typeArray(), "should be called only for type array");
325 // The oopFactory likes to work with the element type.
326 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
327 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
328
329 // Pass oops back through thread local storage. Our apparent type to Java
330 // is that we return an oop, but we can block on exit from this routine and
331 // a GC can trash the oop in C's return register. The generated stub will
332 // fetch the oop from TLS after any possible GC.
333 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
334 thread->set_vm_result(result);
335 JRT_BLOCK_END;
336
337 if (GraphKit::use_ReduceInitialCardMarks()) {
338 // inform GC that we won't do card marks for initializing writes.
339 new_store_pre_barrier(thread);
340 }
341 JRT_END
342
343 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
344
345 // multianewarray for 2 dimensions
346 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread))
347 #ifndef PRODUCT
348 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
349 #endif
350 assert(check_compiled_frame(thread), "incorrect caller");
351 assert(oop(elem_type)->is_klass(), "not a class");
352 jint dims[2];
353 dims[0] = len1;
354 dims[1] = len2;
355 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
356 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
357 thread->set_vm_result(obj);
358 JRT_END
359
360 // multianewarray for 3 dimensions
361 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread))
362 #ifndef PRODUCT
363 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
364 #endif
365 assert(check_compiled_frame(thread), "incorrect caller");
366 assert(oop(elem_type)->is_klass(), "not a class");
367 jint dims[3];
368 dims[0] = len1;
369 dims[1] = len2;
370 dims[2] = len3;
371 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
372 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
373 thread->set_vm_result(obj);
374 JRT_END
375
376 // multianewarray for 4 dimensions
377 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
378 #ifndef PRODUCT
379 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
380 #endif
381 assert(check_compiled_frame(thread), "incorrect caller");
382 assert(oop(elem_type)->is_klass(), "not a class");
383 jint dims[4];
384 dims[0] = len1;
385 dims[1] = len2;
386 dims[2] = len3;
387 dims[3] = len4;
388 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
389 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
390 thread->set_vm_result(obj);
391 JRT_END
392
393 // multianewarray for 5 dimensions
394 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
395 #ifndef PRODUCT
396 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
397 #endif
398 assert(check_compiled_frame(thread), "incorrect caller");
399 assert(oop(elem_type)->is_klass(), "not a class");
400 jint dims[5];
401 dims[0] = len1;
402 dims[1] = len2;
403 dims[2] = len3;
404 dims[3] = len4;
405 dims[4] = len5;
406 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
407 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
408 thread->set_vm_result(obj);
409 JRT_END
410
411 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(klassOopDesc* elem_type, arrayOopDesc* dims, JavaThread *thread))
412 assert(check_compiled_frame(thread), "incorrect caller");
413 assert(oop(elem_type)->is_klass(), "not a class");
414 assert(oop(dims)->is_typeArray(), "not an array");
415
416 ResourceMark rm;
417 jint len = dims->length();
418 assert(len > 0, "Dimensions array should contain data");
419 jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
420 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
421 Copy::conjoint_jints_atomic(j_dims, c_dims, len);
422
423 oop obj = arrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
424 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
425 thread->set_vm_result(obj);
426 JRT_END
427
428
429 const TypeFunc *OptoRuntime::new_instance_Type() {
430 // create input type (domain)
431 const Type **fields = TypeTuple::fields(1);
432 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
433 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
434
435 // create result type (range)
436 fields = TypeTuple::fields(1);
437 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
438
439 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
440
441 return TypeFunc::make(domain, range);
442 }
443
444
445 const TypeFunc *OptoRuntime::athrow_Type() {
446 // create input type (domain)
447 const Type **fields = TypeTuple::fields(1);
448 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
449 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
450
451 // create result type (range)
452 fields = TypeTuple::fields(0);
453
454 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
455
456 return TypeFunc::make(domain, range);
457 }
458
459
460 const TypeFunc *OptoRuntime::new_array_Type() {
461 // create input type (domain)
462 const Type **fields = TypeTuple::fields(2);
463 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
464 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
465 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
466
467 // create result type (range)
468 fields = TypeTuple::fields(1);
469 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
470
471 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
472
473 return TypeFunc::make(domain, range);
474 }
475
476 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
477 // create input type (domain)
478 const int nargs = ndim + 1;
479 const Type **fields = TypeTuple::fields(nargs);
480 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
481 for( int i = 1; i < nargs; i++ )
482 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
483 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
484
485 // create result type (range)
486 fields = TypeTuple::fields(1);
487 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
488 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
489
490 return TypeFunc::make(domain, range);
491 }
492
493 const TypeFunc *OptoRuntime::multianewarray2_Type() {
494 return multianewarray_Type(2);
495 }
496
497 const TypeFunc *OptoRuntime::multianewarray3_Type() {
498 return multianewarray_Type(3);
499 }
500
501 const TypeFunc *OptoRuntime::multianewarray4_Type() {
502 return multianewarray_Type(4);
503 }
504
505 const TypeFunc *OptoRuntime::multianewarray5_Type() {
506 return multianewarray_Type(5);
507 }
508
509 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
510 // create input type (domain)
511 const Type **fields = TypeTuple::fields(2);
512 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
513 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes
514 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
515
516 // create result type (range)
517 fields = TypeTuple::fields(1);
518 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
519 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
520
521 return TypeFunc::make(domain, range);
522 }
523
524 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
525 const Type **fields = TypeTuple::fields(2);
526 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
527 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
528 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
529
530 // create result type (range)
531 fields = TypeTuple::fields(0);
532 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
533
534 return TypeFunc::make(domain, range);
535 }
536
537 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
538
539 const Type **fields = TypeTuple::fields(2);
540 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
541 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
542 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
543
544 // create result type (range)
545 fields = TypeTuple::fields(0);
546 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
547
548 return TypeFunc::make(domain, range);
549 }
550
551 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
552 // create input type (domain)
553 const Type **fields = TypeTuple::fields(1);
554 // Symbol* name of class to be loaded
555 fields[TypeFunc::Parms+0] = TypeInt::INT;
556 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
557
558 // create result type (range)
559 fields = TypeTuple::fields(0);
560 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
561
562 return TypeFunc::make(domain, range);
563 }
564
565 # ifdef ENABLE_ZAP_DEAD_LOCALS
566 // Type used for stub generation for zap_dead_locals.
567 // No inputs or outputs
568 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
569 // create input type (domain)
570 const Type **fields = TypeTuple::fields(0);
571 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
572
573 // create result type (range)
574 fields = TypeTuple::fields(0);
575 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
576
577 return TypeFunc::make(domain,range);
578 }
579 # endif
580
581
582 //-----------------------------------------------------------------------------
583 // Monitor Handling
584 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
585 // create input type (domain)
586 const Type **fields = TypeTuple::fields(2);
587 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
588 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
590
591 // create result type (range)
592 fields = TypeTuple::fields(0);
593
594 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
595
596 return TypeFunc::make(domain,range);
597 }
598
599
600 //-----------------------------------------------------------------------------
601 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
602 // create input type (domain)
603 const Type **fields = TypeTuple::fields(2);
604 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
605 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
606 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
607
608 // create result type (range)
609 fields = TypeTuple::fields(0);
610
611 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
612
613 return TypeFunc::make(domain,range);
614 }
615
616 const TypeFunc* OptoRuntime::flush_windows_Type() {
617 // create input type (domain)
618 const Type** fields = TypeTuple::fields(1);
619 fields[TypeFunc::Parms+0] = NULL; // void
620 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
621
622 // create result type
623 fields = TypeTuple::fields(1);
624 fields[TypeFunc::Parms+0] = NULL; // void
625 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
626
627 return TypeFunc::make(domain, range);
628 }
629
630 const TypeFunc* OptoRuntime::l2f_Type() {
631 // create input type (domain)
632 const Type **fields = TypeTuple::fields(2);
633 fields[TypeFunc::Parms+0] = TypeLong::LONG;
634 fields[TypeFunc::Parms+1] = Type::HALF;
635 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
636
637 // create result type (range)
638 fields = TypeTuple::fields(1);
639 fields[TypeFunc::Parms+0] = Type::FLOAT;
640 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
641
642 return TypeFunc::make(domain, range);
643 }
644
645 const TypeFunc* OptoRuntime::modf_Type() {
646 const Type **fields = TypeTuple::fields(2);
647 fields[TypeFunc::Parms+0] = Type::FLOAT;
648 fields[TypeFunc::Parms+1] = Type::FLOAT;
649 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
650
651 // create result type (range)
652 fields = TypeTuple::fields(1);
653 fields[TypeFunc::Parms+0] = Type::FLOAT;
654
655 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
656
657 return TypeFunc::make(domain, range);
658 }
659
660 const TypeFunc *OptoRuntime::Math_D_D_Type() {
661 // create input type (domain)
662 const Type **fields = TypeTuple::fields(2);
663 // Symbol* name of class to be loaded
664 fields[TypeFunc::Parms+0] = Type::DOUBLE;
665 fields[TypeFunc::Parms+1] = Type::HALF;
666 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
667
668 // create result type (range)
669 fields = TypeTuple::fields(2);
670 fields[TypeFunc::Parms+0] = Type::DOUBLE;
671 fields[TypeFunc::Parms+1] = Type::HALF;
672 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
673
674 return TypeFunc::make(domain, range);
675 }
676
677 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
678 const Type **fields = TypeTuple::fields(4);
679 fields[TypeFunc::Parms+0] = Type::DOUBLE;
680 fields[TypeFunc::Parms+1] = Type::HALF;
681 fields[TypeFunc::Parms+2] = Type::DOUBLE;
682 fields[TypeFunc::Parms+3] = Type::HALF;
683 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
684
685 // create result type (range)
686 fields = TypeTuple::fields(2);
687 fields[TypeFunc::Parms+0] = Type::DOUBLE;
688 fields[TypeFunc::Parms+1] = Type::HALF;
689 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
690
691 return TypeFunc::make(domain, range);
692 }
693
694 //-------------- currentTimeMillis
695
696 const TypeFunc* OptoRuntime::current_time_millis_Type() {
697 // create input type (domain)
698 const Type **fields = TypeTuple::fields(0);
699 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
700
701 // create result type (range)
702 fields = TypeTuple::fields(2);
703 fields[TypeFunc::Parms+0] = TypeLong::LONG;
704 fields[TypeFunc::Parms+1] = Type::HALF;
705 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
706
707 return TypeFunc::make(domain, range);
708 }
709
710 // arraycopy stub variations:
711 enum ArrayCopyType {
712 ac_fast, // void(ptr, ptr, size_t)
713 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
714 ac_slow, // void(ptr, int, ptr, int, int)
715 ac_generic // int(ptr, int, ptr, int, int)
716 };
717
718 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
719 // create input type (domain)
720 int num_args = (act == ac_fast ? 3 : 5);
721 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
722 int argcnt = num_args;
723 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
724 const Type** fields = TypeTuple::fields(argcnt);
725 int argp = TypeFunc::Parms;
726 fields[argp++] = TypePtr::NOTNULL; // src
727 if (num_size_args == 0) {
728 fields[argp++] = TypeInt::INT; // src_pos
729 }
730 fields[argp++] = TypePtr::NOTNULL; // dest
731 if (num_size_args == 0) {
732 fields[argp++] = TypeInt::INT; // dest_pos
733 fields[argp++] = TypeInt::INT; // length
734 }
735 while (num_size_args-- > 0) {
736 fields[argp++] = TypeX_X; // size in whatevers (size_t)
737 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
738 }
739 if (act == ac_checkcast) {
740 fields[argp++] = TypePtr::NOTNULL; // super_klass
741 }
742 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
743 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
744
745 // create result type if needed
746 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
747 fields = TypeTuple::fields(1);
748 if (retcnt == 0)
749 fields[TypeFunc::Parms+0] = NULL; // void
750 else
751 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
752 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
753 return TypeFunc::make(domain, range);
754 }
755
756 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
757 // This signature is simple: Two base pointers and a size_t.
758 return make_arraycopy_Type(ac_fast);
759 }
760
761 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
762 // An extension of fast_arraycopy_Type which adds type checking.
763 return make_arraycopy_Type(ac_checkcast);
764 }
765
766 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
767 // This signature is exactly the same as System.arraycopy.
768 // There are no intptr_t (int/long) arguments.
769 return make_arraycopy_Type(ac_slow);
770 }
771
772 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
773 // This signature is like System.arraycopy, except that it returns status.
774 return make_arraycopy_Type(ac_generic);
775 }
776
777
778 const TypeFunc* OptoRuntime::array_fill_Type() {
779 // create input type (domain): pointer, int, size_t
780 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1));
781 int argp = TypeFunc::Parms;
782 fields[argp++] = TypePtr::NOTNULL;
783 fields[argp++] = TypeInt::INT;
784 fields[argp++] = TypeX_X; // size in whatevers (size_t)
785 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
786 const TypeTuple *domain = TypeTuple::make(argp, fields);
787
788 // create result type
789 fields = TypeTuple::fields(1);
790 fields[TypeFunc::Parms+0] = NULL; // void
791 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
792
793 return TypeFunc::make(domain, range);
794 }
795
796 //------------- Interpreter state access for on stack replacement
797 const TypeFunc* OptoRuntime::osr_end_Type() {
798 // create input type (domain)
799 const Type **fields = TypeTuple::fields(1);
800 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
801 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
802
803 // create result type
804 fields = TypeTuple::fields(1);
805 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
806 fields[TypeFunc::Parms+0] = NULL; // void
807 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
808 return TypeFunc::make(domain, range);
809 }
810
811 //-------------- methodData update helpers
812
813 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
814 // create input type (domain)
815 const Type **fields = TypeTuple::fields(2);
816 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
817 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
818 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
819
820 // create result type
821 fields = TypeTuple::fields(1);
822 fields[TypeFunc::Parms+0] = NULL; // void
823 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
824 return TypeFunc::make(domain,range);
825 }
826
827 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
828 if (receiver == NULL) return;
829 klassOop receiver_klass = receiver->klass();
830
831 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
832 int empty_row = -1; // free row, if any is encountered
833
834 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
835 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
836 // if (vc->receiver(row) == receiver_klass)
837 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
838 intptr_t row_recv = *(mdp + receiver_off);
839 if (row_recv == (intptr_t) receiver_klass) {
840 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
841 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
842 *(mdp + count_off) += DataLayout::counter_increment;
843 return;
844 } else if (row_recv == 0) {
845 // else if (vc->receiver(row) == NULL)
846 empty_row = (int) row;
847 }
848 }
849
850 if (empty_row != -1) {
851 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
852 // vc->set_receiver(empty_row, receiver_klass);
853 *(mdp + receiver_off) = (intptr_t) receiver_klass;
854 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
855 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
856 *(mdp + count_off) = DataLayout::counter_increment;
857 } else {
858 // Receiver did not match any saved receiver and there is no empty row for it.
859 // Increment total counter to indicate polymorphic case.
860 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
861 *count_p += DataLayout::counter_increment;
862 }
863 JRT_END
864
865 //-----------------------------------------------------------------------------
866 // implicit exception support.
867
868 static void report_null_exception_in_code_cache(address exception_pc) {
869 ResourceMark rm;
870 CodeBlob* n = CodeCache::find_blob(exception_pc);
871 if (n != NULL) {
872 tty->print_cr("#");
873 tty->print_cr("# HotSpot Runtime Error, null exception in generated code");
874 tty->print_cr("#");
875 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc);
876
877 if (n->is_nmethod()) {
878 methodOop method = ((nmethod*)n)->method();
879 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string());
880 tty->print_cr("#");
881 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) {
882 const char* title = "HotSpot Runtime Error";
883 const char* question = "Do you want to exclude compilation of this method in future runs?";
884 if (os::message_box(title, question)) {
885 CompilerOracle::append_comment_to_file("");
886 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude");
887 CompilerOracle::append_comment_to_file("");
888 CompilerOracle::append_exclude_to_file(method);
889 tty->print_cr("#");
890 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile);
891 tty->print_cr("#");
892 }
893 }
894 fatal("Implicit null exception happened in compiled method");
895 } else {
896 n->print();
897 fatal("Implicit null exception happened in generated stub");
898 }
899 }
900 fatal("Implicit null exception at wrong place");
901 }
902
903
904 //-------------------------------------------------------------------------------------
905 // register policy
906
907 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
908 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
909 switch (register_save_policy[reg]) {
910 case 'C': return false; //SOC
911 case 'E': return true ; //SOE
912 case 'N': return false; //NS
913 case 'A': return false; //AS
914 }
915 ShouldNotReachHere();
916 return false;
917 }
918
919 //-----------------------------------------------------------------------
920 // Exceptions
921 //
922
923 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
924
925 // The method is an entry that is always called by a C++ method not
926 // directly from compiled code. Compiled code will call the C++ method following.
927 // We can't allow async exception to be installed during exception processing.
928 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
929
930 // Do not confuse exception_oop with pending_exception. The exception_oop
931 // is only used to pass arguments into the method. Not for general
932 // exception handling. DO NOT CHANGE IT to use pending_exception, since
933 // the runtime stubs checks this on exit.
934 assert(thread->exception_oop() != NULL, "exception oop is found");
935 address handler_address = NULL;
936
937 Handle exception(thread, thread->exception_oop());
938
939 if (TraceExceptions) {
940 trace_exception(exception(), thread->exception_pc(), "");
941 }
942 // for AbortVMOnException flag
943 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
944
945 #ifdef ASSERT
946 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
947 // should throw an exception here
948 ShouldNotReachHere();
949 }
950 #endif
951
952
953 // new exception handling: this method is entered only from adapters
954 // exceptions from compiled java methods are handled in compiled code
955 // using rethrow node
956
957 address pc = thread->exception_pc();
958 nm = CodeCache::find_nmethod(pc);
959 assert(nm != NULL, "No NMethod found");
960 if (nm->is_native_method()) {
961 fatal("Native mathod should not have path to exception handling");
962 } else {
963 // we are switching to old paradigm: search for exception handler in caller_frame
964 // instead in exception handler of caller_frame.sender()
965
966 if (JvmtiExport::can_post_on_exceptions()) {
967 // "Full-speed catching" is not necessary here,
968 // since we're notifying the VM on every catch.
969 // Force deoptimization and the rest of the lookup
970 // will be fine.
971 deoptimize_caller_frame(thread, true);
972 }
973
974 // Check the stack guard pages. If enabled, look for handler in this frame;
975 // otherwise, forcibly unwind the frame.
976 //
977 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
978 bool force_unwind = !thread->reguard_stack();
979 bool deopting = false;
980 if (nm->is_deopt_pc(pc)) {
981 deopting = true;
982 RegisterMap map(thread, false);
983 frame deoptee = thread->last_frame().sender(&map);
984 assert(deoptee.is_deoptimized_frame(), "must be deopted");
985 // Adjust the pc back to the original throwing pc
986 pc = deoptee.pc();
987 }
988
989 // If we are forcing an unwind because of stack overflow then deopt is
990 // irrelevant sice we are throwing the frame away anyway.
991
992 if (deopting && !force_unwind) {
993 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
994 } else {
995
996 handler_address =
997 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
998
999 if (handler_address == NULL) {
1000 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1001 assert (handler_address != NULL, "must have compiled handler");
1002 // Update the exception cache only when the unwind was not forced.
1003 if (!force_unwind) {
1004 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1005 }
1006 } else {
1007 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1008 }
1009 }
1010
1011 thread->set_exception_pc(pc);
1012 thread->set_exception_handler_pc(handler_address);
1013
1014 // Check if the exception PC is a MethodHandle call site.
1015 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1016 }
1017
1018 // Restore correct return pc. Was saved above.
1019 thread->set_exception_oop(exception());
1020 return handler_address;
1021
1022 JRT_END
1023
1024 // We are entering here from exception_blob
1025 // If there is a compiled exception handler in this method, we will continue there;
1026 // otherwise we will unwind the stack and continue at the caller of top frame method
1027 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1028 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1029 // we looked up the handler for has been deoptimized in the meantime. If it has been
1030 // we must not use the handler and instread return the deopt blob.
1031 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1032 //
1033 // We are in Java not VM and in debug mode we have a NoHandleMark
1034 //
1035 #ifndef PRODUCT
1036 SharedRuntime::_find_handler_ctr++; // find exception handler
1037 #endif
1038 debug_only(NoHandleMark __hm;)
1039 nmethod* nm = NULL;
1040 address handler_address = NULL;
1041 {
1042 // Enter the VM
1043
1044 ResetNoHandleMark rnhm;
1045 handler_address = handle_exception_C_helper(thread, nm);
1046 }
1047
1048 // Back in java: Use no oops, DON'T safepoint
1049
1050 // Now check to see if the handler we are returning is in a now
1051 // deoptimized frame
1052
1053 if (nm != NULL) {
1054 RegisterMap map(thread, false);
1055 frame caller = thread->last_frame().sender(&map);
1056 #ifdef ASSERT
1057 assert(caller.is_compiled_frame(), "must be");
1058 #endif // ASSERT
1059 if (caller.is_deoptimized_frame()) {
1060 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1061 }
1062 }
1063 return handler_address;
1064 }
1065
1066 //------------------------------rethrow----------------------------------------
1067 // We get here after compiled code has executed a 'RethrowNode'. The callee
1068 // is either throwing or rethrowing an exception. The callee-save registers
1069 // have been restored, synchronized objects have been unlocked and the callee
1070 // stack frame has been removed. The return address was passed in.
1071 // Exception oop is passed as the 1st argument. This routine is then called
1072 // from the stub. On exit, we know where to jump in the caller's code.
1073 // After this C code exits, the stub will pop his frame and end in a jump
1074 // (instead of a return). We enter the caller's default handler.
1075 //
1076 // This must be JRT_LEAF:
1077 // - caller will not change its state as we cannot block on exit,
1078 // therefore raw_exception_handler_for_return_address is all it takes
1079 // to handle deoptimized blobs
1080 //
1081 // However, there needs to be a safepoint check in the middle! So compiled
1082 // safepoints are completely watertight.
1083 //
1084 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1085 //
1086 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1087 //
1088 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1089 #ifndef PRODUCT
1090 SharedRuntime::_rethrow_ctr++; // count rethrows
1091 #endif
1092 assert (exception != NULL, "should have thrown a NULLPointerException");
1093 #ifdef ASSERT
1094 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1095 // should throw an exception here
1096 ShouldNotReachHere();
1097 }
1098 #endif
1099
1100 thread->set_vm_result(exception);
1101 // Frame not compiled (handles deoptimization blob)
1102 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1103 }
1104
1105
1106 const TypeFunc *OptoRuntime::rethrow_Type() {
1107 // create input type (domain)
1108 const Type **fields = TypeTuple::fields(1);
1109 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1110 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1111
1112 // create result type (range)
1113 fields = TypeTuple::fields(1);
1114 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1115 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1116
1117 return TypeFunc::make(domain, range);
1118 }
1119
1120
1121 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1122 // Deoptimize frame
1123 if (doit) {
1124 // Called from within the owner thread, so no need for safepoint
1125 RegisterMap reg_map(thread);
1126 frame stub_frame = thread->last_frame();
1127 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1128 frame caller_frame = stub_frame.sender(®_map);
1129
1130 // bypass VM_DeoptimizeFrame and deoptimize the frame directly
1131 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1132 }
1133 }
1134
1135
1136 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1137 // create input type (domain)
1138 const Type **fields = TypeTuple::fields(1);
1139 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1140 // // The JavaThread* is passed to each routine as the last argument
1141 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1142 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1143
1144 // create result type (range)
1145 fields = TypeTuple::fields(0);
1146
1147 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1148
1149 return TypeFunc::make(domain,range);
1150 }
1151
1152
1153 //-----------------------------------------------------------------------------
1154 // Dtrace support. entry and exit probes have the same signature
1155 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1156 // create input type (domain)
1157 const Type **fields = TypeTuple::fields(2);
1158 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1159 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering
1160 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1161
1162 // create result type (range)
1163 fields = TypeTuple::fields(0);
1164
1165 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1166
1167 return TypeFunc::make(domain,range);
1168 }
1169
1170 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1171 // create input type (domain)
1172 const Type **fields = TypeTuple::fields(2);
1173 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1174 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1175
1176 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1177
1178 // create result type (range)
1179 fields = TypeTuple::fields(0);
1180
1181 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1182
1183 return TypeFunc::make(domain,range);
1184 }
1185
1186
1187 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1188 assert(obj->is_oop(), "must be a valid oop");
1189 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
1190 instanceKlass::register_finalizer(instanceOop(obj), CHECK);
1191 JRT_END
1192
1193 //-----------------------------------------------------------------------------
1194
1195 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1196
1197 //
1198 // dump the collected NamedCounters.
1199 //
1200 void OptoRuntime::print_named_counters() {
1201 int total_lock_count = 0;
1202 int eliminated_lock_count = 0;
1203
1204 NamedCounter* c = _named_counters;
1205 while (c) {
1206 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1207 int count = c->count();
1208 if (count > 0) {
1209 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1210 if (Verbose) {
1211 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1212 }
1213 total_lock_count += count;
1214 if (eliminated) {
1215 eliminated_lock_count += count;
1216 }
1217 }
1218 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1219 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1220 if (blc->nonzero()) {
1221 tty->print_cr("%s", c->name());
1222 blc->print_on(tty);
1223 }
1224 }
1225 c = c->next();
1226 }
1227 if (total_lock_count > 0) {
1228 tty->print_cr("dynamic locks: %d", total_lock_count);
1229 if (eliminated_lock_count) {
1230 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1231 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1232 }
1233 }
1234 }
1235
1236 //
1237 // Allocate a new NamedCounter. The JVMState is used to generate the
1238 // name which consists of method@line for the inlining tree.
1239 //
1240
1241 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1242 int max_depth = youngest_jvms->depth();
1243
1244 // Visit scopes from youngest to oldest.
1245 bool first = true;
1246 stringStream st;
1247 for (int depth = max_depth; depth >= 1; depth--) {
1248 JVMState* jvms = youngest_jvms->of_depth(depth);
1249 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1250 if (!first) {
1251 st.print(" ");
1252 } else {
1253 first = false;
1254 }
1255 int bci = jvms->bci();
1256 if (bci < 0) bci = 0;
1257 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1258 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1259 }
1260 NamedCounter* c;
1261 if (tag == NamedCounter::BiasedLockingCounter) {
1262 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1263 } else {
1264 c = new NamedCounter(strdup(st.as_string()), tag);
1265 }
1266
1267 // atomically add the new counter to the head of the list. We only
1268 // add counters so this is safe.
1269 NamedCounter* head;
1270 do {
1271 head = _named_counters;
1272 c->set_next(head);
1273 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1274 return c;
1275 }
1276
1277 //-----------------------------------------------------------------------------
1278 // Non-product code
1279 #ifndef PRODUCT
1280
1281 int trace_exception_counter = 0;
1282 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1283 ttyLocker ttyl;
1284 trace_exception_counter++;
1285 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1286 exception_oop->print_value();
1287 tty->print(" in ");
1288 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1289 if (blob->is_nmethod()) {
1290 ((nmethod*)blob)->method()->print_value();
1291 } else if (blob->is_runtime_stub()) {
1292 tty->print("<runtime-stub>");
1293 } else {
1294 tty->print("<unknown>");
1295 }
1296 tty->print(" at " INTPTR_FORMAT, exception_pc);
1297 tty->print_cr("]");
1298 }
1299
1300 #endif // PRODUCT
1301
1302
1303 # ifdef ENABLE_ZAP_DEAD_LOCALS
1304 // Called from call sites in compiled code with oop maps (actually safepoints)
1305 // Zaps dead locals in first java frame.
1306 // Is entry because may need to lock to generate oop maps
1307 // Currently, only used for compiler frames, but someday may be used
1308 // for interpreter frames, too.
1309
1310 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1311
1312 // avoid pointers to member funcs with these helpers
1313 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1314 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1315
1316
1317 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1318 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1319 assert(JavaThread::current() == thread, "is this needed?");
1320
1321 if ( !ZapDeadCompiledLocals ) return;
1322
1323 bool skip = false;
1324
1325 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1326 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1327 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1328 warning("starting zapping after skipping");
1329
1330 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1331 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1332 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1333 warning("about to zap last zap");
1334
1335 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1336
1337 if ( skip ) return;
1338
1339 // find java frame and zap it
1340
1341 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1342 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1343 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1344 return;
1345 }
1346 }
1347 warning("no frame found to zap in zap_dead_Java_locals_C");
1348 }
1349
1350 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1351 zap_dead_java_or_native_locals(thread, is_java_frame);
1352 JRT_END
1353
1354 // The following does not work because for one thing, the
1355 // thread state is wrong; it expects java, but it is native.
1356 // Also, the invariants in a native stub are different and
1357 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1358 // in there.
1359 // So for now, we do not zap in native stubs.
1360
1361 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1362 zap_dead_java_or_native_locals(thread, is_native_frame);
1363 JRT_END
1364
1365 # endif