1 /*
2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/connode.hpp"
52 #include "opto/graphKit.hpp"
53 #include "opto/machnode.hpp"
54 #include "opto/matcher.hpp"
55 #include "opto/memnode.hpp"
56 #include "opto/mulnode.hpp"
57 #include "opto/runtime.hpp"
58 #include "opto/subnode.hpp"
59 #include "runtime/fprofiler.hpp"
60 #include "runtime/handles.inline.hpp"
61 #include "runtime/interfaceSupport.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/signature.hpp"
65 #include "runtime/threadCritical.hpp"
66 #include "runtime/vframe.hpp"
67 #include "runtime/vframeArray.hpp"
68 #include "runtime/vframe_hp.hpp"
69 #include "utilities/copy.hpp"
70 #include "utilities/preserveException.hpp"
71 #ifdef TARGET_ARCH_MODEL_x86_32
72 # include "adfiles/ad_x86_32.hpp"
73 #endif
74 #ifdef TARGET_ARCH_MODEL_x86_64
75 # include "adfiles/ad_x86_64.hpp"
76 #endif
77 #ifdef TARGET_ARCH_MODEL_sparc
78 # include "adfiles/ad_sparc.hpp"
79 #endif
80 #ifdef TARGET_ARCH_MODEL_zero
81 # include "adfiles/ad_zero.hpp"
82 #endif
83 #ifdef TARGET_ARCH_MODEL_arm
84 # include "adfiles/ad_arm.hpp"
85 #endif
86 #ifdef TARGET_ARCH_MODEL_ppc_32
87 # include "adfiles/ad_ppc_32.hpp"
88 #endif
89 #ifdef TARGET_ARCH_MODEL_ppc_64
90 # include "adfiles/ad_ppc_64.hpp"
91 #endif
92
93
94 // For debugging purposes:
95 // To force FullGCALot inside a runtime function, add the following two lines
96 //
97 // Universe::release_fullgc_alot_dummy();
98 // MarkSweep::invoke(0, "Debugging");
99 //
100 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
101
102
103
104
105 // Compiled code entry points
106 address OptoRuntime::_new_instance_Java = NULL;
107 address OptoRuntime::_new_array_Java = NULL;
108 address OptoRuntime::_new_array_nozero_Java = NULL;
109 address OptoRuntime::_multianewarray2_Java = NULL;
110 address OptoRuntime::_multianewarray3_Java = NULL;
111 address OptoRuntime::_multianewarray4_Java = NULL;
112 address OptoRuntime::_multianewarray5_Java = NULL;
113 address OptoRuntime::_multianewarrayN_Java = NULL;
114 address OptoRuntime::_g1_wb_pre_Java = NULL;
115 address OptoRuntime::_g1_wb_post_Java = NULL;
116 address OptoRuntime::_vtable_must_compile_Java = NULL;
117 address OptoRuntime::_complete_monitor_locking_Java = NULL;
118 address OptoRuntime::_rethrow_Java = NULL;
119
120 address OptoRuntime::_slow_arraycopy_Java = NULL;
121 address OptoRuntime::_register_finalizer_Java = NULL;
122
123 # ifdef ENABLE_ZAP_DEAD_LOCALS
124 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
125 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
126 # endif
127
128 ExceptionBlob* OptoRuntime::_exception_blob;
129
130 // This should be called in an assertion at the start of OptoRuntime routines
131 // which are entered from compiled code (all of them)
132 #ifdef ASSERT
133 static bool check_compiled_frame(JavaThread* thread) {
134 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
135 RegisterMap map(thread, false);
136 frame caller = thread->last_frame().sender(&map);
137 assert(caller.is_compiled_frame(), "not being called from compiled like code");
138 return true;
139 }
140 #endif // ASSERT
141
142
143 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
144 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)
145
146 void OptoRuntime::generate(ciEnv* env) {
147
148 generate_exception_blob();
149
150 // Note: tls: Means fetching the return oop out of the thread-local storage
151 //
152 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
153 // -------------------------------------------------------------------------------------------------------------------------------
154 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
155 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
156 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false);
157 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
158 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
159 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
160 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
161 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false);
162 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
163 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
164 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false);
165 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
166
167 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
168 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
169
170 # ifdef ENABLE_ZAP_DEAD_LOCALS
171 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
172 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
173 # endif
174
175 }
176
177 #undef gen
178
179
180 // Helper method to do generation of RunTimeStub's
181 address OptoRuntime::generate_stub( ciEnv* env,
182 TypeFunc_generator gen, address C_function,
183 const char *name, int is_fancy_jump,
184 bool pass_tls,
185 bool save_argument_registers,
186 bool return_pc ) {
187 ResourceMark rm;
188 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
189 return C.stub_entry_point();
190 }
191
192 const char* OptoRuntime::stub_name(address entry) {
193 #ifndef PRODUCT
194 CodeBlob* cb = CodeCache::find_blob(entry);
195 RuntimeStub* rs =(RuntimeStub *)cb;
196 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
197 return rs->name();
198 #else
199 // Fast implementation for product mode (maybe it should be inlined too)
200 return "runtime stub";
201 #endif
202 }
203
204
205 //=============================================================================
206 // Opto compiler runtime routines
207 //=============================================================================
208
209
210 //=============================allocation======================================
211 // We failed the fast-path allocation. Now we need to do a scavenge or GC
212 // and try allocation again.
213
214 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
215 // After any safepoint, just before going back to compiled code,
216 // we inform the GC that we will be doing initializing writes to
217 // this object in the future without emitting card-marks, so
218 // GC may take any compensating steps.
219 // NOTE: Keep this code consistent with GraphKit::store_barrier.
220
221 oop new_obj = thread->vm_result();
222 if (new_obj == NULL) return;
223
224 assert(Universe::heap()->can_elide_tlab_store_barriers(),
225 "compiler must check this first");
226 // GC may decide to give back a safer copy of new_obj.
227 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
228 thread->set_vm_result(new_obj);
229 }
230
231 // object allocation
232 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))
233 JRT_BLOCK;
234 #ifndef PRODUCT
235 SharedRuntime::_new_instance_ctr++; // new instance requires GC
236 #endif
237 assert(check_compiled_frame(thread), "incorrect caller");
238
239 // These checks are cheap to make and support reflective allocation.
240 int lh = klass->layout_helper();
241 if (Klass::layout_helper_needs_slow_path(lh)
242 || !InstanceKlass::cast(klass)->is_initialized()) {
243 KlassHandle kh(THREAD, klass);
244 kh->check_valid_for_instantiation(false, THREAD);
245 if (!HAS_PENDING_EXCEPTION) {
246 InstanceKlass::cast(kh())->initialize(THREAD);
247 }
248 if (!HAS_PENDING_EXCEPTION) {
249 klass = kh();
250 } else {
251 klass = NULL;
252 }
253 }
254
255 if (klass != NULL) {
256 // Scavenge and allocate an instance.
257 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
258 thread->set_vm_result(result);
259
260 // Pass oops back through thread local storage. Our apparent type to Java
261 // is that we return an oop, but we can block on exit from this routine and
262 // a GC can trash the oop in C's return register. The generated stub will
263 // fetch the oop from TLS after any possible GC.
264 }
265
266 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
267 JRT_BLOCK_END;
268
269 if (GraphKit::use_ReduceInitialCardMarks()) {
270 // inform GC that we won't do card marks for initializing writes.
271 new_store_pre_barrier(thread);
272 }
273 JRT_END
274
275
276 // array allocation
277 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))
278 JRT_BLOCK;
279 #ifndef PRODUCT
280 SharedRuntime::_new_array_ctr++; // new array requires GC
281 #endif
282 assert(check_compiled_frame(thread), "incorrect caller");
283
284 // Scavenge and allocate an instance.
285 oop result;
286
287 if (array_type->oop_is_typeArray()) {
288 // The oopFactory likes to work with the element type.
289 // (We could bypass the oopFactory, since it doesn't add much value.)
290 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
291 result = oopFactory::new_typeArray(elem_type, len, THREAD);
292 } else {
293 // Although the oopFactory likes to work with the elem_type,
294 // the compiler prefers the array_type, since it must already have
295 // that latter value in hand for the fast path.
296 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
297 result = oopFactory::new_objArray(elem_type, len, THREAD);
298 }
299
300 // Pass oops back through thread local storage. Our apparent type to Java
301 // is that we return an oop, but we can block on exit from this routine and
302 // a GC can trash the oop in C's return register. The generated stub will
303 // fetch the oop from TLS after any possible GC.
304 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
305 thread->set_vm_result(result);
306 JRT_BLOCK_END;
307
308 if (GraphKit::use_ReduceInitialCardMarks()) {
309 // inform GC that we won't do card marks for initializing writes.
310 new_store_pre_barrier(thread);
311 }
312 JRT_END
313
314 // array allocation without zeroing
315 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))
316 JRT_BLOCK;
317 #ifndef PRODUCT
318 SharedRuntime::_new_array_ctr++; // new array requires GC
319 #endif
320 assert(check_compiled_frame(thread), "incorrect caller");
321
322 // Scavenge and allocate an instance.
323 oop result;
324
325 assert(array_type->oop_is_typeArray(), "should be called only for type array");
326 // The oopFactory likes to work with the element type.
327 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
328 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
329
330 // Pass oops back through thread local storage. Our apparent type to Java
331 // is that we return an oop, but we can block on exit from this routine and
332 // a GC can trash the oop in C's return register. The generated stub will
333 // fetch the oop from TLS after any possible GC.
334 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
335 thread->set_vm_result(result);
336 JRT_BLOCK_END;
337
338 if (GraphKit::use_ReduceInitialCardMarks()) {
339 // inform GC that we won't do card marks for initializing writes.
340 new_store_pre_barrier(thread);
341 }
342
343 oop result = thread->vm_result();
344 if ((len > 0) && (result != NULL) &&
345 is_deoptimized_caller_frame(thread)) {
346 // Zero array here if the caller is deoptimized.
347 int size = ((typeArrayOop)result)->object_size();
348 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
349 const size_t hs = arrayOopDesc::header_size(elem_type);
350 // Align to next 8 bytes to avoid trashing arrays's length.
351 const size_t aligned_hs = align_object_offset(hs);
352 HeapWord* obj = (HeapWord*)result;
353 if (aligned_hs > hs) {
354 Copy::zero_to_words(obj+hs, aligned_hs-hs);
355 }
356 // Optimized zeroing.
357 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
358 }
359
360 JRT_END
361
362 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
363
364 // multianewarray for 2 dimensions
365 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))
366 #ifndef PRODUCT
367 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
368 #endif
369 assert(check_compiled_frame(thread), "incorrect caller");
370 assert(elem_type->is_klass(), "not a class");
371 jint dims[2];
372 dims[0] = len1;
373 dims[1] = len2;
374 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
375 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
376 thread->set_vm_result(obj);
377 JRT_END
378
379 // multianewarray for 3 dimensions
380 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))
381 #ifndef PRODUCT
382 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
383 #endif
384 assert(check_compiled_frame(thread), "incorrect caller");
385 assert(elem_type->is_klass(), "not a class");
386 jint dims[3];
387 dims[0] = len1;
388 dims[1] = len2;
389 dims[2] = len3;
390 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
391 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
392 thread->set_vm_result(obj);
393 JRT_END
394
395 // multianewarray for 4 dimensions
396 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
397 #ifndef PRODUCT
398 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
399 #endif
400 assert(check_compiled_frame(thread), "incorrect caller");
401 assert(elem_type->is_klass(), "not a class");
402 jint dims[4];
403 dims[0] = len1;
404 dims[1] = len2;
405 dims[2] = len3;
406 dims[3] = len4;
407 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
408 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
409 thread->set_vm_result(obj);
410 JRT_END
411
412 // multianewarray for 5 dimensions
413 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
414 #ifndef PRODUCT
415 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
416 #endif
417 assert(check_compiled_frame(thread), "incorrect caller");
418 assert(elem_type->is_klass(), "not a class");
419 jint dims[5];
420 dims[0] = len1;
421 dims[1] = len2;
422 dims[2] = len3;
423 dims[3] = len4;
424 dims[4] = len5;
425 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
426 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
427 thread->set_vm_result(obj);
428 JRT_END
429
430 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))
431 assert(check_compiled_frame(thread), "incorrect caller");
432 assert(elem_type->is_klass(), "not a class");
433 assert(oop(dims)->is_typeArray(), "not an array");
434
435 ResourceMark rm;
436 jint len = dims->length();
437 assert(len > 0, "Dimensions array should contain data");
438 jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
439 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
440 Copy::conjoint_jints_atomic(j_dims, c_dims, len);
441
442 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
443 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
444 thread->set_vm_result(obj);
445 JRT_END
446
447
448 const TypeFunc *OptoRuntime::new_instance_Type() {
449 // create input type (domain)
450 const Type **fields = TypeTuple::fields(1);
451 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
452 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
453
454 // create result type (range)
455 fields = TypeTuple::fields(1);
456 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
457
458 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
459
460 return TypeFunc::make(domain, range);
461 }
462
463
464 const TypeFunc *OptoRuntime::athrow_Type() {
465 // create input type (domain)
466 const Type **fields = TypeTuple::fields(1);
467 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
468 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
469
470 // create result type (range)
471 fields = TypeTuple::fields(0);
472
473 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
474
475 return TypeFunc::make(domain, range);
476 }
477
478
479 const TypeFunc *OptoRuntime::new_array_Type() {
480 // create input type (domain)
481 const Type **fields = TypeTuple::fields(2);
482 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
483 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
484 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
485
486 // create result type (range)
487 fields = TypeTuple::fields(1);
488 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
489
490 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
491
492 return TypeFunc::make(domain, range);
493 }
494
495 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
496 // create input type (domain)
497 const int nargs = ndim + 1;
498 const Type **fields = TypeTuple::fields(nargs);
499 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
500 for( int i = 1; i < nargs; i++ )
501 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
502 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
503
504 // create result type (range)
505 fields = TypeTuple::fields(1);
506 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
507 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
508
509 return TypeFunc::make(domain, range);
510 }
511
512 const TypeFunc *OptoRuntime::multianewarray2_Type() {
513 return multianewarray_Type(2);
514 }
515
516 const TypeFunc *OptoRuntime::multianewarray3_Type() {
517 return multianewarray_Type(3);
518 }
519
520 const TypeFunc *OptoRuntime::multianewarray4_Type() {
521 return multianewarray_Type(4);
522 }
523
524 const TypeFunc *OptoRuntime::multianewarray5_Type() {
525 return multianewarray_Type(5);
526 }
527
528 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
529 // create input type (domain)
530 const Type **fields = TypeTuple::fields(2);
531 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
532 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes
533 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
534
535 // create result type (range)
536 fields = TypeTuple::fields(1);
537 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
538 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
539
540 return TypeFunc::make(domain, range);
541 }
542
543 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
544 const Type **fields = TypeTuple::fields(2);
545 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
546 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
547 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
548
549 // create result type (range)
550 fields = TypeTuple::fields(0);
551 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
552
553 return TypeFunc::make(domain, range);
554 }
555
556 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
557
558 const Type **fields = TypeTuple::fields(2);
559 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
560 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
561 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
562
563 // create result type (range)
564 fields = TypeTuple::fields(0);
565 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
566
567 return TypeFunc::make(domain, range);
568 }
569
570 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
571 // create input type (domain)
572 const Type **fields = TypeTuple::fields(1);
573 // Symbol* name of class to be loaded
574 fields[TypeFunc::Parms+0] = TypeInt::INT;
575 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
576
577 // create result type (range)
578 fields = TypeTuple::fields(0);
579 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
580
581 return TypeFunc::make(domain, range);
582 }
583
584 # ifdef ENABLE_ZAP_DEAD_LOCALS
585 // Type used for stub generation for zap_dead_locals.
586 // No inputs or outputs
587 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
588 // create input type (domain)
589 const Type **fields = TypeTuple::fields(0);
590 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
591
592 // create result type (range)
593 fields = TypeTuple::fields(0);
594 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
595
596 return TypeFunc::make(domain,range);
597 }
598 # endif
599
600
601 //-----------------------------------------------------------------------------
602 // Monitor Handling
603 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
604 // create input type (domain)
605 const Type **fields = TypeTuple::fields(2);
606 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
607 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
608 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
609
610 // create result type (range)
611 fields = TypeTuple::fields(0);
612
613 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
614
615 return TypeFunc::make(domain,range);
616 }
617
618
619 //-----------------------------------------------------------------------------
620 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
621 // create input type (domain)
622 const Type **fields = TypeTuple::fields(2);
623 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
624 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
625 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
626
627 // create result type (range)
628 fields = TypeTuple::fields(0);
629
630 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
631
632 return TypeFunc::make(domain,range);
633 }
634
635 const TypeFunc* OptoRuntime::flush_windows_Type() {
636 // create input type (domain)
637 const Type** fields = TypeTuple::fields(1);
638 fields[TypeFunc::Parms+0] = NULL; // void
639 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
640
641 // create result type
642 fields = TypeTuple::fields(1);
643 fields[TypeFunc::Parms+0] = NULL; // void
644 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
645
646 return TypeFunc::make(domain, range);
647 }
648
649 const TypeFunc* OptoRuntime::l2f_Type() {
650 // create input type (domain)
651 const Type **fields = TypeTuple::fields(2);
652 fields[TypeFunc::Parms+0] = TypeLong::LONG;
653 fields[TypeFunc::Parms+1] = Type::HALF;
654 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
655
656 // create result type (range)
657 fields = TypeTuple::fields(1);
658 fields[TypeFunc::Parms+0] = Type::FLOAT;
659 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
660
661 return TypeFunc::make(domain, range);
662 }
663
664 const TypeFunc* OptoRuntime::modf_Type() {
665 const Type **fields = TypeTuple::fields(2);
666 fields[TypeFunc::Parms+0] = Type::FLOAT;
667 fields[TypeFunc::Parms+1] = Type::FLOAT;
668 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
669
670 // create result type (range)
671 fields = TypeTuple::fields(1);
672 fields[TypeFunc::Parms+0] = Type::FLOAT;
673
674 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
675
676 return TypeFunc::make(domain, range);
677 }
678
679 const TypeFunc *OptoRuntime::Math_D_D_Type() {
680 // create input type (domain)
681 const Type **fields = TypeTuple::fields(2);
682 // Symbol* name of class to be loaded
683 fields[TypeFunc::Parms+0] = Type::DOUBLE;
684 fields[TypeFunc::Parms+1] = Type::HALF;
685 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
686
687 // create result type (range)
688 fields = TypeTuple::fields(2);
689 fields[TypeFunc::Parms+0] = Type::DOUBLE;
690 fields[TypeFunc::Parms+1] = Type::HALF;
691 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
692
693 return TypeFunc::make(domain, range);
694 }
695
696 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
697 const Type **fields = TypeTuple::fields(4);
698 fields[TypeFunc::Parms+0] = Type::DOUBLE;
699 fields[TypeFunc::Parms+1] = Type::HALF;
700 fields[TypeFunc::Parms+2] = Type::DOUBLE;
701 fields[TypeFunc::Parms+3] = Type::HALF;
702 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
703
704 // create result type (range)
705 fields = TypeTuple::fields(2);
706 fields[TypeFunc::Parms+0] = Type::DOUBLE;
707 fields[TypeFunc::Parms+1] = Type::HALF;
708 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
709
710 return TypeFunc::make(domain, range);
711 }
712
713 //-------------- currentTimeMillis, currentTimeNanos, etc
714
715 const TypeFunc* OptoRuntime::void_long_Type() {
716 // create input type (domain)
717 const Type **fields = TypeTuple::fields(0);
718 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
719
720 // create result type (range)
721 fields = TypeTuple::fields(2);
722 fields[TypeFunc::Parms+0] = TypeLong::LONG;
723 fields[TypeFunc::Parms+1] = Type::HALF;
724 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
725
726 return TypeFunc::make(domain, range);
727 }
728
729 // arraycopy stub variations:
730 enum ArrayCopyType {
731 ac_fast, // void(ptr, ptr, size_t)
732 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
733 ac_slow, // void(ptr, int, ptr, int, int)
734 ac_generic // int(ptr, int, ptr, int, int)
735 };
736
737 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
738 // create input type (domain)
739 int num_args = (act == ac_fast ? 3 : 5);
740 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
741 int argcnt = num_args;
742 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
743 const Type** fields = TypeTuple::fields(argcnt);
744 int argp = TypeFunc::Parms;
745 fields[argp++] = TypePtr::NOTNULL; // src
746 if (num_size_args == 0) {
747 fields[argp++] = TypeInt::INT; // src_pos
748 }
749 fields[argp++] = TypePtr::NOTNULL; // dest
750 if (num_size_args == 0) {
751 fields[argp++] = TypeInt::INT; // dest_pos
752 fields[argp++] = TypeInt::INT; // length
753 }
754 while (num_size_args-- > 0) {
755 fields[argp++] = TypeX_X; // size in whatevers (size_t)
756 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
757 }
758 if (act == ac_checkcast) {
759 fields[argp++] = TypePtr::NOTNULL; // super_klass
760 }
761 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
762 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
763
764 // create result type if needed
765 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
766 fields = TypeTuple::fields(1);
767 if (retcnt == 0)
768 fields[TypeFunc::Parms+0] = NULL; // void
769 else
770 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
771 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
772 return TypeFunc::make(domain, range);
773 }
774
775 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
776 // This signature is simple: Two base pointers and a size_t.
777 return make_arraycopy_Type(ac_fast);
778 }
779
780 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
781 // An extension of fast_arraycopy_Type which adds type checking.
782 return make_arraycopy_Type(ac_checkcast);
783 }
784
785 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
786 // This signature is exactly the same as System.arraycopy.
787 // There are no intptr_t (int/long) arguments.
788 return make_arraycopy_Type(ac_slow);
789 }
790
791 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
792 // This signature is like System.arraycopy, except that it returns status.
793 return make_arraycopy_Type(ac_generic);
794 }
795
796
797 const TypeFunc* OptoRuntime::array_fill_Type() {
798 const Type** fields;
799 int argp = TypeFunc::Parms;
800 if (CCallingConventionRequiresIntsAsLongs) {
801 // create input type (domain): pointer, int, size_t
802 fields = TypeTuple::fields(3 LP64_ONLY( + 2));
803 fields[argp++] = TypePtr::NOTNULL;
804 fields[argp++] = TypeLong::LONG;
805 fields[argp++] = Type::HALF;
806 } else {
807 // create input type (domain): pointer, int, size_t
808 fields = TypeTuple::fields(3 LP64_ONLY( + 1));
809 fields[argp++] = TypePtr::NOTNULL;
810 fields[argp++] = TypeInt::INT;
811 }
812 fields[argp++] = TypeX_X; // size in whatevers (size_t)
813 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
814 const TypeTuple *domain = TypeTuple::make(argp, fields);
815
816 // create result type
817 fields = TypeTuple::fields(1);
818 fields[TypeFunc::Parms+0] = NULL; // void
819 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
820
821 return TypeFunc::make(domain, range);
822 }
823
824 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
825 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
826 // create input type (domain)
827 int num_args = 3;
828 int argcnt = num_args;
829 const Type** fields = TypeTuple::fields(argcnt);
830 int argp = TypeFunc::Parms;
831 fields[argp++] = TypePtr::NOTNULL; // src
832 fields[argp++] = TypePtr::NOTNULL; // dest
833 fields[argp++] = TypePtr::NOTNULL; // k array
834 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
835 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
836
837 // no result type needed
838 fields = TypeTuple::fields(1);
839 fields[TypeFunc::Parms+0] = NULL; // void
840 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
841 return TypeFunc::make(domain, range);
842 }
843
844 /**
845 * int updateBytesCRC32(int crc, byte* b, int len)
846 */
847 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
848 // create input type (domain)
849 int num_args = 3;
850 int argcnt = num_args;
851 const Type** fields = TypeTuple::fields(argcnt);
852 int argp = TypeFunc::Parms;
853 fields[argp++] = TypeInt::INT; // crc
854 fields[argp++] = TypePtr::NOTNULL; // src
855 fields[argp++] = TypeInt::INT; // len
856 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
857 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
858
859 // result type needed
860 fields = TypeTuple::fields(1);
861 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
862 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
863 return TypeFunc::make(domain, range);
864 }
865
866 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void
867 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
868 // create input type (domain)
869 int num_args = 5;
870 int argcnt = num_args;
871 const Type** fields = TypeTuple::fields(argcnt);
872 int argp = TypeFunc::Parms;
873 fields[argp++] = TypePtr::NOTNULL; // src
874 fields[argp++] = TypePtr::NOTNULL; // dest
875 fields[argp++] = TypePtr::NOTNULL; // k array
876 fields[argp++] = TypePtr::NOTNULL; // r array
877 fields[argp++] = TypeInt::INT; // src len
878 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
879 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
880
881 // no result type needed
882 fields = TypeTuple::fields(1);
883 fields[TypeFunc::Parms+0] = NULL; // void
884 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
885 return TypeFunc::make(domain, range);
886 }
887
888 //------------- Interpreter state access for on stack replacement
889 const TypeFunc* OptoRuntime::osr_end_Type() {
890 // create input type (domain)
891 const Type **fields = TypeTuple::fields(1);
892 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
893 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
894
895 // create result type
896 fields = TypeTuple::fields(1);
897 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
898 fields[TypeFunc::Parms+0] = NULL; // void
899 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
900 return TypeFunc::make(domain, range);
901 }
902
903 //-------------- methodData update helpers
904
905 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
906 // create input type (domain)
907 const Type **fields = TypeTuple::fields(2);
908 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
909 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
910 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
911
912 // create result type
913 fields = TypeTuple::fields(1);
914 fields[TypeFunc::Parms+0] = NULL; // void
915 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
916 return TypeFunc::make(domain,range);
917 }
918
919 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
920 if (receiver == NULL) return;
921 Klass* receiver_klass = receiver->klass();
922
923 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
924 int empty_row = -1; // free row, if any is encountered
925
926 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
927 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
928 // if (vc->receiver(row) == receiver_klass)
929 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
930 intptr_t row_recv = *(mdp + receiver_off);
931 if (row_recv == (intptr_t) receiver_klass) {
932 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
933 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
934 *(mdp + count_off) += DataLayout::counter_increment;
935 return;
936 } else if (row_recv == 0) {
937 // else if (vc->receiver(row) == NULL)
938 empty_row = (int) row;
939 }
940 }
941
942 if (empty_row != -1) {
943 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
944 // vc->set_receiver(empty_row, receiver_klass);
945 *(mdp + receiver_off) = (intptr_t) receiver_klass;
946 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
947 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
948 *(mdp + count_off) = DataLayout::counter_increment;
949 } else {
950 // Receiver did not match any saved receiver and there is no empty row for it.
951 // Increment total counter to indicate polymorphic case.
952 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
953 *count_p += DataLayout::counter_increment;
954 }
955 JRT_END
956
957 //-------------------------------------------------------------------------------------
958 // register policy
959
960 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
961 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
962 switch (register_save_policy[reg]) {
963 case 'C': return false; //SOC
964 case 'E': return true ; //SOE
965 case 'N': return false; //NS
966 case 'A': return false; //AS
967 }
968 ShouldNotReachHere();
969 return false;
970 }
971
972 //-----------------------------------------------------------------------
973 // Exceptions
974 //
975
976 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
977
978 // The method is an entry that is always called by a C++ method not
979 // directly from compiled code. Compiled code will call the C++ method following.
980 // We can't allow async exception to be installed during exception processing.
981 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
982
983 // Do not confuse exception_oop with pending_exception. The exception_oop
984 // is only used to pass arguments into the method. Not for general
985 // exception handling. DO NOT CHANGE IT to use pending_exception, since
986 // the runtime stubs checks this on exit.
987 assert(thread->exception_oop() != NULL, "exception oop is found");
988 address handler_address = NULL;
989
990 Handle exception(thread, thread->exception_oop());
991
992 if (TraceExceptions) {
993 trace_exception(exception(), thread->exception_pc(), "");
994 }
995 // for AbortVMOnException flag
996 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
997
998 #ifdef ASSERT
999 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1000 // should throw an exception here
1001 ShouldNotReachHere();
1002 }
1003 #endif
1004
1005
1006 // new exception handling: this method is entered only from adapters
1007 // exceptions from compiled java methods are handled in compiled code
1008 // using rethrow node
1009
1010 address pc = thread->exception_pc();
1011 nm = CodeCache::find_nmethod(pc);
1012 assert(nm != NULL, "No NMethod found");
1013 if (nm->is_native_method()) {
1014 fatal("Native method should not have path to exception handling");
1015 } else {
1016 // we are switching to old paradigm: search for exception handler in caller_frame
1017 // instead in exception handler of caller_frame.sender()
1018
1019 if (JvmtiExport::can_post_on_exceptions()) {
1020 // "Full-speed catching" is not necessary here,
1021 // since we're notifying the VM on every catch.
1022 // Force deoptimization and the rest of the lookup
1023 // will be fine.
1024 deoptimize_caller_frame(thread);
1025 }
1026
1027 // Check the stack guard pages. If enabled, look for handler in this frame;
1028 // otherwise, forcibly unwind the frame.
1029 //
1030 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1031 bool force_unwind = !thread->reguard_stack();
1032 bool deopting = false;
1033 if (nm->is_deopt_pc(pc)) {
1034 deopting = true;
1035 RegisterMap map(thread, false);
1036 frame deoptee = thread->last_frame().sender(&map);
1037 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1038 // Adjust the pc back to the original throwing pc
1039 pc = deoptee.pc();
1040 }
1041
1042 // If we are forcing an unwind because of stack overflow then deopt is
1043 // irrelevant since we are throwing the frame away anyway.
1044
1045 if (deopting && !force_unwind) {
1046 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1047 } else {
1048
1049 handler_address =
1050 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1051
1052 if (handler_address == NULL) {
1053 Handle original_exception(thread, exception());
1054 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1055 assert (handler_address != NULL, "must have compiled handler");
1056 // Update the exception cache only when the unwind was not forced
1057 // and there didn't happen another exception during the computation of the
1058 // compiled exception handler.
1059 if (!force_unwind && original_exception() == exception()) {
1060 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1061 }
1062 } else {
1063 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1064 }
1065 }
1066
1067 thread->set_exception_pc(pc);
1068 thread->set_exception_handler_pc(handler_address);
1069
1070 // Check if the exception PC is a MethodHandle call site.
1071 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1072 }
1073
1074 // Restore correct return pc. Was saved above.
1075 thread->set_exception_oop(exception());
1076 return handler_address;
1077
1078 JRT_END
1079
1080 // We are entering here from exception_blob
1081 // If there is a compiled exception handler in this method, we will continue there;
1082 // otherwise we will unwind the stack and continue at the caller of top frame method
1083 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1084 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1085 // we looked up the handler for has been deoptimized in the meantime. If it has been
1086 // we must not use the handler and instead return the deopt blob.
1087 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1088 //
1089 // We are in Java not VM and in debug mode we have a NoHandleMark
1090 //
1091 #ifndef PRODUCT
1092 SharedRuntime::_find_handler_ctr++; // find exception handler
1093 #endif
1094 debug_only(NoHandleMark __hm;)
1095 nmethod* nm = NULL;
1096 address handler_address = NULL;
1097 {
1098 // Enter the VM
1099
1100 ResetNoHandleMark rnhm;
1101 handler_address = handle_exception_C_helper(thread, nm);
1102 }
1103
1104 // Back in java: Use no oops, DON'T safepoint
1105
1106 // Now check to see if the handler we are returning is in a now
1107 // deoptimized frame
1108
1109 if (nm != NULL) {
1110 RegisterMap map(thread, false);
1111 frame caller = thread->last_frame().sender(&map);
1112 #ifdef ASSERT
1113 assert(caller.is_compiled_frame(), "must be");
1114 #endif // ASSERT
1115 if (caller.is_deoptimized_frame()) {
1116 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1117 }
1118 }
1119 return handler_address;
1120 }
1121
1122 //------------------------------rethrow----------------------------------------
1123 // We get here after compiled code has executed a 'RethrowNode'. The callee
1124 // is either throwing or rethrowing an exception. The callee-save registers
1125 // have been restored, synchronized objects have been unlocked and the callee
1126 // stack frame has been removed. The return address was passed in.
1127 // Exception oop is passed as the 1st argument. This routine is then called
1128 // from the stub. On exit, we know where to jump in the caller's code.
1129 // After this C code exits, the stub will pop his frame and end in a jump
1130 // (instead of a return). We enter the caller's default handler.
1131 //
1132 // This must be JRT_LEAF:
1133 // - caller will not change its state as we cannot block on exit,
1134 // therefore raw_exception_handler_for_return_address is all it takes
1135 // to handle deoptimized blobs
1136 //
1137 // However, there needs to be a safepoint check in the middle! So compiled
1138 // safepoints are completely watertight.
1139 //
1140 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1141 //
1142 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1143 //
1144 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1145 #ifndef PRODUCT
1146 SharedRuntime::_rethrow_ctr++; // count rethrows
1147 #endif
1148 assert (exception != NULL, "should have thrown a NULLPointerException");
1149 #ifdef ASSERT
1150 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1151 // should throw an exception here
1152 ShouldNotReachHere();
1153 }
1154 #endif
1155
1156 thread->set_vm_result(exception);
1157 // Frame not compiled (handles deoptimization blob)
1158 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1159 }
1160
1161
1162 const TypeFunc *OptoRuntime::rethrow_Type() {
1163 // create input type (domain)
1164 const Type **fields = TypeTuple::fields(1);
1165 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1166 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1167
1168 // create result type (range)
1169 fields = TypeTuple::fields(1);
1170 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1171 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1172
1173 return TypeFunc::make(domain, range);
1174 }
1175
1176
1177 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1178 // Deoptimize the caller before continuing, as the compiled
1179 // exception handler table may not be valid.
1180 if (!StressCompiledExceptionHandlers && doit) {
1181 deoptimize_caller_frame(thread);
1182 }
1183 }
1184
1185 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1186 // Called from within the owner thread, so no need for safepoint
1187 RegisterMap reg_map(thread);
1188 frame stub_frame = thread->last_frame();
1189 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1190 frame caller_frame = stub_frame.sender(®_map);
1191
1192 // Deoptimize the caller frame.
1193 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1194 }
1195
1196
1197 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1198 // Called from within the owner thread, so no need for safepoint
1199 RegisterMap reg_map(thread);
1200 frame stub_frame = thread->last_frame();
1201 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1202 frame caller_frame = stub_frame.sender(®_map);
1203 return caller_frame.is_deoptimized_frame();
1204 }
1205
1206
1207 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1208 // create input type (domain)
1209 const Type **fields = TypeTuple::fields(1);
1210 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1211 // // The JavaThread* is passed to each routine as the last argument
1212 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1213 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1214
1215 // create result type (range)
1216 fields = TypeTuple::fields(0);
1217
1218 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1219
1220 return TypeFunc::make(domain,range);
1221 }
1222
1223
1224 //-----------------------------------------------------------------------------
1225 // Dtrace support. entry and exit probes have the same signature
1226 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1227 // create input type (domain)
1228 const Type **fields = TypeTuple::fields(2);
1229 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1230 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1231 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1232
1233 // create result type (range)
1234 fields = TypeTuple::fields(0);
1235
1236 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1237
1238 return TypeFunc::make(domain,range);
1239 }
1240
1241 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1242 // create input type (domain)
1243 const Type **fields = TypeTuple::fields(2);
1244 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1245 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1246
1247 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1248
1249 // create result type (range)
1250 fields = TypeTuple::fields(0);
1251
1252 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1253
1254 return TypeFunc::make(domain,range);
1255 }
1256
1257
1258 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1259 assert(obj->is_oop(), "must be a valid oop");
1260 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1261 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1262 JRT_END
1263
1264 //-----------------------------------------------------------------------------
1265
1266 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1267
1268 //
1269 // dump the collected NamedCounters.
1270 //
1271 void OptoRuntime::print_named_counters() {
1272 int total_lock_count = 0;
1273 int eliminated_lock_count = 0;
1274
1275 NamedCounter* c = _named_counters;
1276 while (c) {
1277 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1278 int count = c->count();
1279 if (count > 0) {
1280 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1281 if (Verbose) {
1282 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1283 }
1284 total_lock_count += count;
1285 if (eliminated) {
1286 eliminated_lock_count += count;
1287 }
1288 }
1289 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1290 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1291 if (blc->nonzero()) {
1292 tty->print_cr("%s", c->name());
1293 blc->print_on(tty);
1294 }
1295 }
1296 c = c->next();
1297 }
1298 if (total_lock_count > 0) {
1299 tty->print_cr("dynamic locks: %d", total_lock_count);
1300 if (eliminated_lock_count) {
1301 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1302 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1303 }
1304 }
1305 }
1306
1307 //
1308 // Allocate a new NamedCounter. The JVMState is used to generate the
1309 // name which consists of method@line for the inlining tree.
1310 //
1311
1312 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1313 int max_depth = youngest_jvms->depth();
1314
1315 // Visit scopes from youngest to oldest.
1316 bool first = true;
1317 stringStream st;
1318 for (int depth = max_depth; depth >= 1; depth--) {
1319 JVMState* jvms = youngest_jvms->of_depth(depth);
1320 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1321 if (!first) {
1322 st.print(" ");
1323 } else {
1324 first = false;
1325 }
1326 int bci = jvms->bci();
1327 if (bci < 0) bci = 0;
1328 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1329 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1330 }
1331 NamedCounter* c;
1332 if (tag == NamedCounter::BiasedLockingCounter) {
1333 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1334 } else {
1335 c = new NamedCounter(strdup(st.as_string()), tag);
1336 }
1337
1338 // atomically add the new counter to the head of the list. We only
1339 // add counters so this is safe.
1340 NamedCounter* head;
1341 do {
1342 head = _named_counters;
1343 c->set_next(head);
1344 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1345 return c;
1346 }
1347
1348 //-----------------------------------------------------------------------------
1349 // Non-product code
1350 #ifndef PRODUCT
1351
1352 int trace_exception_counter = 0;
1353 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1354 ttyLocker ttyl;
1355 trace_exception_counter++;
1356 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1357 exception_oop->print_value();
1358 tty->print(" in ");
1359 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1360 if (blob->is_nmethod()) {
1361 ((nmethod*)blob)->method()->print_value();
1362 } else if (blob->is_runtime_stub()) {
1363 tty->print("<runtime-stub>");
1364 } else {
1365 tty->print("<unknown>");
1366 }
1367 tty->print(" at " INTPTR_FORMAT, exception_pc);
1368 tty->print_cr("]");
1369 }
1370
1371 #endif // PRODUCT
1372
1373
1374 # ifdef ENABLE_ZAP_DEAD_LOCALS
1375 // Called from call sites in compiled code with oop maps (actually safepoints)
1376 // Zaps dead locals in first java frame.
1377 // Is entry because may need to lock to generate oop maps
1378 // Currently, only used for compiler frames, but someday may be used
1379 // for interpreter frames, too.
1380
1381 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1382
1383 // avoid pointers to member funcs with these helpers
1384 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1385 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1386
1387
1388 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1389 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1390 assert(JavaThread::current() == thread, "is this needed?");
1391
1392 if ( !ZapDeadCompiledLocals ) return;
1393
1394 bool skip = false;
1395
1396 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1397 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1398 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1399 warning("starting zapping after skipping");
1400
1401 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1402 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1403 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1404 warning("about to zap last zap");
1405
1406 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1407
1408 if ( skip ) return;
1409
1410 // find java frame and zap it
1411
1412 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1413 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1414 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1415 return;
1416 }
1417 }
1418 warning("no frame found to zap in zap_dead_Java_locals_C");
1419 }
1420
1421 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1422 zap_dead_java_or_native_locals(thread, is_java_frame);
1423 JRT_END
1424
1425 // The following does not work because for one thing, the
1426 // thread state is wrong; it expects java, but it is native.
1427 // Also, the invariants in a native stub are different and
1428 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1429 // in there.
1430 // So for now, we do not zap in native stubs.
1431
1432 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1433 zap_dead_java_or_native_locals(thread, is_native_frame);
1434 JRT_END
1435
1436 # endif