1 /*
2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/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 if (var == NULL) { return false; }
146
147 bool OptoRuntime::generate(ciEnv* env) {
148
149 generate_exception_blob();
150
151 // Note: tls: Means fetching the return oop out of the thread-local storage
152 //
153 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
154 // -------------------------------------------------------------------------------------------------------------------------------
155 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
156 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
157 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false);
158 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
159 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
160 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
161 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
162 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false);
163 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
164 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
165 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false);
166 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
167
168 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
169 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
170
171 # ifdef ENABLE_ZAP_DEAD_LOCALS
172 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
173 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
174 # endif
175 return true;
176 }
177
178 #undef gen
179
180
181 // Helper method to do generation of RunTimeStub's
182 address OptoRuntime::generate_stub( ciEnv* env,
183 TypeFunc_generator gen, address C_function,
184 const char *name, int is_fancy_jump,
185 bool pass_tls,
186 bool save_argument_registers,
187 bool return_pc ) {
188 ResourceMark rm;
189 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
190 return C.stub_entry_point();
191 }
192
193 const char* OptoRuntime::stub_name(address entry) {
194 #ifndef PRODUCT
195 CodeBlob* cb = CodeCache::find_blob(entry);
196 RuntimeStub* rs =(RuntimeStub *)cb;
197 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
198 return rs->name();
199 #else
200 // Fast implementation for product mode (maybe it should be inlined too)
201 return "runtime stub";
202 #endif
203 }
204
205
206 //=============================================================================
207 // Opto compiler runtime routines
208 //=============================================================================
209
210
211 //=============================allocation======================================
212 // We failed the fast-path allocation. Now we need to do a scavenge or GC
213 // and try allocation again.
214
215 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
216 // After any safepoint, just before going back to compiled code,
217 // we inform the GC that we will be doing initializing writes to
218 // this object in the future without emitting card-marks, so
219 // GC may take any compensating steps.
220 // NOTE: Keep this code consistent with GraphKit::store_barrier.
221
222 oop new_obj = thread->vm_result();
223 if (new_obj == NULL) return;
224
225 assert(Universe::heap()->can_elide_tlab_store_barriers(),
226 "compiler must check this first");
227 // GC may decide to give back a safer copy of new_obj.
228 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
229 thread->set_vm_result(new_obj);
230 }
231
232 // object allocation
233 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))
234 JRT_BLOCK;
235 #ifndef PRODUCT
236 SharedRuntime::_new_instance_ctr++; // new instance requires GC
237 #endif
238 assert(check_compiled_frame(thread), "incorrect caller");
239
240 // These checks are cheap to make and support reflective allocation.
241 int lh = klass->layout_helper();
242 if (Klass::layout_helper_needs_slow_path(lh)
243 || !InstanceKlass::cast(klass)->is_initialized()) {
244 KlassHandle kh(THREAD, klass);
245 kh->check_valid_for_instantiation(false, THREAD);
246 if (!HAS_PENDING_EXCEPTION) {
247 InstanceKlass::cast(kh())->initialize(THREAD);
248 }
249 if (!HAS_PENDING_EXCEPTION) {
250 klass = kh();
251 } else {
252 klass = NULL;
253 }
254 }
255
256 if (klass != NULL) {
257 // Scavenge and allocate an instance.
258 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
259 thread->set_vm_result(result);
260
261 // Pass oops back through thread local storage. Our apparent type to Java
262 // is that we return an oop, but we can block on exit from this routine and
263 // a GC can trash the oop in C's return register. The generated stub will
264 // fetch the oop from TLS after any possible GC.
265 }
266
267 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
268 JRT_BLOCK_END;
269
270 if (GraphKit::use_ReduceInitialCardMarks()) {
271 // inform GC that we won't do card marks for initializing writes.
272 new_store_pre_barrier(thread);
273 }
274 JRT_END
275
276
277 // array allocation
278 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))
279 JRT_BLOCK;
280 #ifndef PRODUCT
281 SharedRuntime::_new_array_ctr++; // new array requires GC
282 #endif
283 assert(check_compiled_frame(thread), "incorrect caller");
284
285 // Scavenge and allocate an instance.
286 oop result;
287
288 if (array_type->oop_is_typeArray()) {
289 // The oopFactory likes to work with the element type.
290 // (We could bypass the oopFactory, since it doesn't add much value.)
291 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
292 result = oopFactory::new_typeArray(elem_type, len, THREAD);
293 } else {
294 // Although the oopFactory likes to work with the elem_type,
295 // the compiler prefers the array_type, since it must already have
296 // that latter value in hand for the fast path.
297 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
298 result = oopFactory::new_objArray(elem_type, len, THREAD);
299 }
300
301 // Pass oops back through thread local storage. Our apparent type to Java
302 // is that we return an oop, but we can block on exit from this routine and
303 // a GC can trash the oop in C's return register. The generated stub will
304 // fetch the oop from TLS after any possible GC.
305 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
306 thread->set_vm_result(result);
307 JRT_BLOCK_END;
308
309 if (GraphKit::use_ReduceInitialCardMarks()) {
310 // inform GC that we won't do card marks for initializing writes.
311 new_store_pre_barrier(thread);
312 }
313 JRT_END
314
315 // array allocation without zeroing
316 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))
317 JRT_BLOCK;
318 #ifndef PRODUCT
319 SharedRuntime::_new_array_ctr++; // new array requires GC
320 #endif
321 assert(check_compiled_frame(thread), "incorrect caller");
322
323 // Scavenge and allocate an instance.
324 oop result;
325
326 assert(array_type->oop_is_typeArray(), "should be called only for type array");
327 // The oopFactory likes to work with the element type.
328 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
329 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
330
331 // Pass oops back through thread local storage. Our apparent type to Java
332 // is that we return an oop, but we can block on exit from this routine and
333 // a GC can trash the oop in C's return register. The generated stub will
334 // fetch the oop from TLS after any possible GC.
335 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
336 thread->set_vm_result(result);
337 JRT_BLOCK_END;
338
339 if (GraphKit::use_ReduceInitialCardMarks()) {
340 // inform GC that we won't do card marks for initializing writes.
341 new_store_pre_barrier(thread);
342 }
343
344 oop result = thread->vm_result();
345 if ((len > 0) && (result != NULL) &&
346 is_deoptimized_caller_frame(thread)) {
347 // Zero array here if the caller is deoptimized.
348 int size = ((typeArrayOop)result)->object_size();
349 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
350 const size_t hs = arrayOopDesc::header_size(elem_type);
351 // Align to next 8 bytes to avoid trashing arrays's length.
352 const size_t aligned_hs = align_object_offset(hs);
353 HeapWord* obj = (HeapWord*)result;
354 if (aligned_hs > hs) {
355 Copy::zero_to_words(obj+hs, aligned_hs-hs);
356 }
357 // Optimized zeroing.
358 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
359 }
360
361 JRT_END
362
363 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
364
365 // multianewarray for 2 dimensions
366 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))
367 #ifndef PRODUCT
368 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
369 #endif
370 assert(check_compiled_frame(thread), "incorrect caller");
371 assert(elem_type->is_klass(), "not a class");
372 jint dims[2];
373 dims[0] = len1;
374 dims[1] = len2;
375 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
376 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
377 thread->set_vm_result(obj);
378 JRT_END
379
380 // multianewarray for 3 dimensions
381 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))
382 #ifndef PRODUCT
383 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
384 #endif
385 assert(check_compiled_frame(thread), "incorrect caller");
386 assert(elem_type->is_klass(), "not a class");
387 jint dims[3];
388 dims[0] = len1;
389 dims[1] = len2;
390 dims[2] = len3;
391 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
392 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
393 thread->set_vm_result(obj);
394 JRT_END
395
396 // multianewarray for 4 dimensions
397 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
398 #ifndef PRODUCT
399 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
400 #endif
401 assert(check_compiled_frame(thread), "incorrect caller");
402 assert(elem_type->is_klass(), "not a class");
403 jint dims[4];
404 dims[0] = len1;
405 dims[1] = len2;
406 dims[2] = len3;
407 dims[3] = len4;
408 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
409 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
410 thread->set_vm_result(obj);
411 JRT_END
412
413 // multianewarray for 5 dimensions
414 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
415 #ifndef PRODUCT
416 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
417 #endif
418 assert(check_compiled_frame(thread), "incorrect caller");
419 assert(elem_type->is_klass(), "not a class");
420 jint dims[5];
421 dims[0] = len1;
422 dims[1] = len2;
423 dims[2] = len3;
424 dims[3] = len4;
425 dims[4] = len5;
426 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
427 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
428 thread->set_vm_result(obj);
429 JRT_END
430
431 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))
432 assert(check_compiled_frame(thread), "incorrect caller");
433 assert(elem_type->is_klass(), "not a class");
434 assert(oop(dims)->is_typeArray(), "not an array");
435
436 ResourceMark rm;
437 jint len = dims->length();
438 assert(len > 0, "Dimensions array should contain data");
439 jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
440 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
441 Copy::conjoint_jints_atomic(j_dims, c_dims, len);
442
443 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
444 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
445 thread->set_vm_result(obj);
446 JRT_END
447
448
449 const TypeFunc *OptoRuntime::new_instance_Type() {
450 // create input type (domain)
451 const Type **fields = TypeTuple::fields(1);
452 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
453 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
454
455 // create result type (range)
456 fields = TypeTuple::fields(1);
457 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
458
459 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
460
461 return TypeFunc::make(domain, range);
462 }
463
464
465 const TypeFunc *OptoRuntime::athrow_Type() {
466 // create input type (domain)
467 const Type **fields = TypeTuple::fields(1);
468 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
469 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
470
471 // create result type (range)
472 fields = TypeTuple::fields(0);
473
474 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
475
476 return TypeFunc::make(domain, range);
477 }
478
479
480 const TypeFunc *OptoRuntime::new_array_Type() {
481 // create input type (domain)
482 const Type **fields = TypeTuple::fields(2);
483 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
484 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
485 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
486
487 // create result type (range)
488 fields = TypeTuple::fields(1);
489 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
490
491 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
492
493 return TypeFunc::make(domain, range);
494 }
495
496 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
497 // create input type (domain)
498 const int nargs = ndim + 1;
499 const Type **fields = TypeTuple::fields(nargs);
500 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
501 for( int i = 1; i < nargs; i++ )
502 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
503 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
504
505 // create result type (range)
506 fields = TypeTuple::fields(1);
507 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
508 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
509
510 return TypeFunc::make(domain, range);
511 }
512
513 const TypeFunc *OptoRuntime::multianewarray2_Type() {
514 return multianewarray_Type(2);
515 }
516
517 const TypeFunc *OptoRuntime::multianewarray3_Type() {
518 return multianewarray_Type(3);
519 }
520
521 const TypeFunc *OptoRuntime::multianewarray4_Type() {
522 return multianewarray_Type(4);
523 }
524
525 const TypeFunc *OptoRuntime::multianewarray5_Type() {
526 return multianewarray_Type(5);
527 }
528
529 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
530 // create input type (domain)
531 const Type **fields = TypeTuple::fields(2);
532 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
533 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes
534 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
535
536 // create result type (range)
537 fields = TypeTuple::fields(1);
538 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
539 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
540
541 return TypeFunc::make(domain, range);
542 }
543
544 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
545 const Type **fields = TypeTuple::fields(2);
546 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
547 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
548 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
549
550 // create result type (range)
551 fields = TypeTuple::fields(0);
552 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
553
554 return TypeFunc::make(domain, range);
555 }
556
557 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
558
559 const Type **fields = TypeTuple::fields(2);
560 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
561 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
562 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
563
564 // create result type (range)
565 fields = TypeTuple::fields(0);
566 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
567
568 return TypeFunc::make(domain, range);
569 }
570
571 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
572 // create input type (domain)
573 const Type **fields = TypeTuple::fields(1);
574 // Symbol* name of class to be loaded
575 fields[TypeFunc::Parms+0] = TypeInt::INT;
576 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
577
578 // create result type (range)
579 fields = TypeTuple::fields(0);
580 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
581
582 return TypeFunc::make(domain, range);
583 }
584
585 # ifdef ENABLE_ZAP_DEAD_LOCALS
586 // Type used for stub generation for zap_dead_locals.
587 // No inputs or outputs
588 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
589 // create input type (domain)
590 const Type **fields = TypeTuple::fields(0);
591 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
592
593 // create result type (range)
594 fields = TypeTuple::fields(0);
595 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
596
597 return TypeFunc::make(domain,range);
598 }
599 # endif
600
601
602 //-----------------------------------------------------------------------------
603 // Monitor Handling
604 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
605 // create input type (domain)
606 const Type **fields = TypeTuple::fields(2);
607 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
608 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
609 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
610
611 // create result type (range)
612 fields = TypeTuple::fields(0);
613
614 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
615
616 return TypeFunc::make(domain,range);
617 }
618
619
620 //-----------------------------------------------------------------------------
621 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
622 // create input type (domain)
623 const Type **fields = TypeTuple::fields(2);
624 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
625 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
626 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
627
628 // create result type (range)
629 fields = TypeTuple::fields(0);
630
631 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
632
633 return TypeFunc::make(domain,range);
634 }
635
636 const TypeFunc* OptoRuntime::flush_windows_Type() {
637 // create input type (domain)
638 const Type** fields = TypeTuple::fields(1);
639 fields[TypeFunc::Parms+0] = NULL; // void
640 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
641
642 // create result type
643 fields = TypeTuple::fields(1);
644 fields[TypeFunc::Parms+0] = NULL; // void
645 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
646
647 return TypeFunc::make(domain, range);
648 }
649
650 const TypeFunc* OptoRuntime::l2f_Type() {
651 // create input type (domain)
652 const Type **fields = TypeTuple::fields(2);
653 fields[TypeFunc::Parms+0] = TypeLong::LONG;
654 fields[TypeFunc::Parms+1] = Type::HALF;
655 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
656
657 // create result type (range)
658 fields = TypeTuple::fields(1);
659 fields[TypeFunc::Parms+0] = Type::FLOAT;
660 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
661
662 return TypeFunc::make(domain, range);
663 }
664
665 const TypeFunc* OptoRuntime::modf_Type() {
666 const Type **fields = TypeTuple::fields(2);
667 fields[TypeFunc::Parms+0] = Type::FLOAT;
668 fields[TypeFunc::Parms+1] = Type::FLOAT;
669 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
670
671 // create result type (range)
672 fields = TypeTuple::fields(1);
673 fields[TypeFunc::Parms+0] = Type::FLOAT;
674
675 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
676
677 return TypeFunc::make(domain, range);
678 }
679
680 const TypeFunc *OptoRuntime::Math_D_D_Type() {
681 // create input type (domain)
682 const Type **fields = TypeTuple::fields(2);
683 // Symbol* name of class to be loaded
684 fields[TypeFunc::Parms+0] = Type::DOUBLE;
685 fields[TypeFunc::Parms+1] = Type::HALF;
686 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
687
688 // create result type (range)
689 fields = TypeTuple::fields(2);
690 fields[TypeFunc::Parms+0] = Type::DOUBLE;
691 fields[TypeFunc::Parms+1] = Type::HALF;
692 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
693
694 return TypeFunc::make(domain, range);
695 }
696
697 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
698 const Type **fields = TypeTuple::fields(4);
699 fields[TypeFunc::Parms+0] = Type::DOUBLE;
700 fields[TypeFunc::Parms+1] = Type::HALF;
701 fields[TypeFunc::Parms+2] = Type::DOUBLE;
702 fields[TypeFunc::Parms+3] = Type::HALF;
703 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
704
705 // create result type (range)
706 fields = TypeTuple::fields(2);
707 fields[TypeFunc::Parms+0] = Type::DOUBLE;
708 fields[TypeFunc::Parms+1] = Type::HALF;
709 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
710
711 return TypeFunc::make(domain, range);
712 }
713
714 //-------------- currentTimeMillis, currentTimeNanos, etc
715
716 const TypeFunc* OptoRuntime::void_long_Type() {
717 // create input type (domain)
718 const Type **fields = TypeTuple::fields(0);
719 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
720
721 // create result type (range)
722 fields = TypeTuple::fields(2);
723 fields[TypeFunc::Parms+0] = TypeLong::LONG;
724 fields[TypeFunc::Parms+1] = Type::HALF;
725 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
726
727 return TypeFunc::make(domain, range);
728 }
729
730 // arraycopy stub variations:
731 enum ArrayCopyType {
732 ac_fast, // void(ptr, ptr, size_t)
733 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
734 ac_slow, // void(ptr, int, ptr, int, int)
735 ac_generic // int(ptr, int, ptr, int, int)
736 };
737
738 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
739 // create input type (domain)
740 int num_args = (act == ac_fast ? 3 : 5);
741 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
742 int argcnt = num_args;
743 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
744 const Type** fields = TypeTuple::fields(argcnt);
745 int argp = TypeFunc::Parms;
746 fields[argp++] = TypePtr::NOTNULL; // src
747 if (num_size_args == 0) {
748 fields[argp++] = TypeInt::INT; // src_pos
749 }
750 fields[argp++] = TypePtr::NOTNULL; // dest
751 if (num_size_args == 0) {
752 fields[argp++] = TypeInt::INT; // dest_pos
753 fields[argp++] = TypeInt::INT; // length
754 }
755 while (num_size_args-- > 0) {
756 fields[argp++] = TypeX_X; // size in whatevers (size_t)
757 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
758 }
759 if (act == ac_checkcast) {
760 fields[argp++] = TypePtr::NOTNULL; // super_klass
761 }
762 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
763 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
764
765 // create result type if needed
766 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
767 fields = TypeTuple::fields(1);
768 if (retcnt == 0)
769 fields[TypeFunc::Parms+0] = NULL; // void
770 else
771 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
772 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
773 return TypeFunc::make(domain, range);
774 }
775
776 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
777 // This signature is simple: Two base pointers and a size_t.
778 return make_arraycopy_Type(ac_fast);
779 }
780
781 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
782 // An extension of fast_arraycopy_Type which adds type checking.
783 return make_arraycopy_Type(ac_checkcast);
784 }
785
786 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
787 // This signature is exactly the same as System.arraycopy.
788 // There are no intptr_t (int/long) arguments.
789 return make_arraycopy_Type(ac_slow);
790 }
791
792 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
793 // This signature is like System.arraycopy, except that it returns status.
794 return make_arraycopy_Type(ac_generic);
795 }
796
797
798 const TypeFunc* OptoRuntime::array_fill_Type() {
799 const Type** fields;
800 int argp = TypeFunc::Parms;
801 if (CCallingConventionRequiresIntsAsLongs) {
802 // create input type (domain): pointer, int, size_t
803 fields = TypeTuple::fields(3 LP64_ONLY( + 2));
804 fields[argp++] = TypePtr::NOTNULL;
805 fields[argp++] = TypeLong::LONG;
806 fields[argp++] = Type::HALF;
807 } else {
808 // create input type (domain): pointer, int, size_t
809 fields = TypeTuple::fields(3 LP64_ONLY( + 1));
810 fields[argp++] = TypePtr::NOTNULL;
811 fields[argp++] = TypeInt::INT;
812 }
813 fields[argp++] = TypeX_X; // size in whatevers (size_t)
814 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
815 const TypeTuple *domain = TypeTuple::make(argp, fields);
816
817 // create result type
818 fields = TypeTuple::fields(1);
819 fields[TypeFunc::Parms+0] = NULL; // void
820 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
821
822 return TypeFunc::make(domain, range);
823 }
824
825 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
826 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
827 // create input type (domain)
828 int num_args = 3;
829 if (Matcher::pass_original_key_for_aes()) {
830 num_args = 4;
831 }
832 int argcnt = num_args;
833 const Type** fields = TypeTuple::fields(argcnt);
834 int argp = TypeFunc::Parms;
835 fields[argp++] = TypePtr::NOTNULL; // src
836 fields[argp++] = TypePtr::NOTNULL; // dest
837 fields[argp++] = TypePtr::NOTNULL; // k array
838 if (Matcher::pass_original_key_for_aes()) {
839 fields[argp++] = TypePtr::NOTNULL; // original k array
840 }
841 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
842 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
843
844 // no result type needed
845 fields = TypeTuple::fields(1);
846 fields[TypeFunc::Parms+0] = NULL; // void
847 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
848 return TypeFunc::make(domain, range);
849 }
850
851 /**
852 * int updateBytesCRC32(int crc, byte* b, int len)
853 */
854 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
855 // create input type (domain)
856 int num_args = 3;
857 int argcnt = num_args;
858 const Type** fields = TypeTuple::fields(argcnt);
859 int argp = TypeFunc::Parms;
860 fields[argp++] = TypeInt::INT; // crc
861 fields[argp++] = TypePtr::NOTNULL; // src
862 fields[argp++] = TypeInt::INT; // len
863 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
864 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
865
866 // result type needed
867 fields = TypeTuple::fields(1);
868 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
869 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
870 return TypeFunc::make(domain, range);
871 }
872
873 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int
874 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
875 // create input type (domain)
876 int num_args = 5;
877 if (Matcher::pass_original_key_for_aes()) {
878 num_args = 6;
879 }
880 int argcnt = num_args;
881 const Type** fields = TypeTuple::fields(argcnt);
882 int argp = TypeFunc::Parms;
883 fields[argp++] = TypePtr::NOTNULL; // src
884 fields[argp++] = TypePtr::NOTNULL; // dest
885 fields[argp++] = TypePtr::NOTNULL; // k array
886 fields[argp++] = TypePtr::NOTNULL; // r array
887 fields[argp++] = TypeInt::INT; // src len
888 if (Matcher::pass_original_key_for_aes()) {
889 fields[argp++] = TypePtr::NOTNULL; // original k array
890 }
891 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
892 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
893
894 // returning cipher len (int)
895 fields = TypeTuple::fields(1);
896 fields[TypeFunc::Parms+0] = TypeInt::INT;
897 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
898 return TypeFunc::make(domain, range);
899 }
900
901 /*
902 * void implCompress(byte[] buf, int ofs)
903 */
904 const TypeFunc* OptoRuntime::sha_implCompress_Type() {
905 // create input type (domain)
906 int num_args = 2;
907 int argcnt = num_args;
908 const Type** fields = TypeTuple::fields(argcnt);
909 int argp = TypeFunc::Parms;
910 fields[argp++] = TypePtr::NOTNULL; // buf
911 fields[argp++] = TypePtr::NOTNULL; // state
912 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
913 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
914
915 // no result type needed
916 fields = TypeTuple::fields(1);
917 fields[TypeFunc::Parms+0] = NULL; // void
918 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
919 return TypeFunc::make(domain, range);
920 }
921
922 /*
923 * int implCompressMultiBlock(byte[] b, int ofs, int limit)
924 */
925 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() {
926 // create input type (domain)
927 int num_args = 4;
928 int argcnt = num_args;
929 const Type** fields = TypeTuple::fields(argcnt);
930 int argp = TypeFunc::Parms;
931 fields[argp++] = TypePtr::NOTNULL; // buf
932 fields[argp++] = TypePtr::NOTNULL; // state
933 fields[argp++] = TypeInt::INT; // ofs
934 fields[argp++] = TypeInt::INT; // limit
935 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
936 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
937
938 // returning ofs (int)
939 fields = TypeTuple::fields(1);
940 fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs
941 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
942 return TypeFunc::make(domain, range);
943 }
944
945 const TypeFunc* OptoRuntime::multiplyToLen_Type() {
946 // create input type (domain)
947 int num_args = 6;
948 int argcnt = num_args;
949 const Type** fields = TypeTuple::fields(argcnt);
950 int argp = TypeFunc::Parms;
951 fields[argp++] = TypePtr::NOTNULL; // x
952 fields[argp++] = TypeInt::INT; // xlen
953 fields[argp++] = TypePtr::NOTNULL; // y
954 fields[argp++] = TypeInt::INT; // ylen
955 fields[argp++] = TypePtr::NOTNULL; // z
956 fields[argp++] = TypeInt::INT; // zlen
957 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
958 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
959
960 // no result type needed
961 fields = TypeTuple::fields(1);
962 fields[TypeFunc::Parms+0] = NULL;
963 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
964 return TypeFunc::make(domain, range);
965 }
966
967
968
969 //------------- Interpreter state access for on stack replacement
970 const TypeFunc* OptoRuntime::osr_end_Type() {
971 // create input type (domain)
972 const Type **fields = TypeTuple::fields(1);
973 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
974 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
975
976 // create result type
977 fields = TypeTuple::fields(1);
978 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
979 fields[TypeFunc::Parms+0] = NULL; // void
980 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
981 return TypeFunc::make(domain, range);
982 }
983
984 //-------------- methodData update helpers
985
986 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
987 // create input type (domain)
988 const Type **fields = TypeTuple::fields(2);
989 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
990 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
991 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
992
993 // create result type
994 fields = TypeTuple::fields(1);
995 fields[TypeFunc::Parms+0] = NULL; // void
996 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
997 return TypeFunc::make(domain,range);
998 }
999
1000 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
1001 if (receiver == NULL) return;
1002 Klass* receiver_klass = receiver->klass();
1003
1004 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
1005 int empty_row = -1; // free row, if any is encountered
1006
1007 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
1008 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
1009 // if (vc->receiver(row) == receiver_klass)
1010 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
1011 intptr_t row_recv = *(mdp + receiver_off);
1012 if (row_recv == (intptr_t) receiver_klass) {
1013 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
1014 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
1015 *(mdp + count_off) += DataLayout::counter_increment;
1016 return;
1017 } else if (row_recv == 0) {
1018 // else if (vc->receiver(row) == NULL)
1019 empty_row = (int) row;
1020 }
1021 }
1022
1023 if (empty_row != -1) {
1024 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
1025 // vc->set_receiver(empty_row, receiver_klass);
1026 *(mdp + receiver_off) = (intptr_t) receiver_klass;
1027 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
1028 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
1029 *(mdp + count_off) = DataLayout::counter_increment;
1030 } else {
1031 // Receiver did not match any saved receiver and there is no empty row for it.
1032 // Increment total counter to indicate polymorphic case.
1033 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
1034 *count_p += DataLayout::counter_increment;
1035 }
1036 JRT_END
1037
1038 //-------------------------------------------------------------------------------------
1039 // register policy
1040
1041 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
1042 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1043 switch (register_save_policy[reg]) {
1044 case 'C': return false; //SOC
1045 case 'E': return true ; //SOE
1046 case 'N': return false; //NS
1047 case 'A': return false; //AS
1048 }
1049 ShouldNotReachHere();
1050 return false;
1051 }
1052
1053 //-----------------------------------------------------------------------
1054 // Exceptions
1055 //
1056
1057 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
1058
1059 // The method is an entry that is always called by a C++ method not
1060 // directly from compiled code. Compiled code will call the C++ method following.
1061 // We can't allow async exception to be installed during exception processing.
1062 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
1063
1064 // Do not confuse exception_oop with pending_exception. The exception_oop
1065 // is only used to pass arguments into the method. Not for general
1066 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1067 // the runtime stubs checks this on exit.
1068 assert(thread->exception_oop() != NULL, "exception oop is found");
1069 address handler_address = NULL;
1070
1071 Handle exception(thread, thread->exception_oop());
1072 address pc = thread->exception_pc();
1073
1074 // Clear out the exception oop and pc since looking up an
1075 // exception handler can cause class loading, which might throw an
1076 // exception and those fields are expected to be clear during
1077 // normal bytecode execution.
1078 thread->clear_exception_oop_and_pc();
1079
1080 if (TraceExceptions) {
1081 trace_exception(exception(), pc, "");
1082 }
1083
1084 // for AbortVMOnException flag
1085 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
1086
1087 #ifdef ASSERT
1088 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1089 // should throw an exception here
1090 ShouldNotReachHere();
1091 }
1092 #endif
1093
1094 // new exception handling: this method is entered only from adapters
1095 // exceptions from compiled java methods are handled in compiled code
1096 // using rethrow node
1097
1098 nm = CodeCache::find_nmethod(pc);
1099 assert(nm != NULL, "No NMethod found");
1100 if (nm->is_native_method()) {
1101 fatal("Native method should not have path to exception handling");
1102 } else {
1103 // we are switching to old paradigm: search for exception handler in caller_frame
1104 // instead in exception handler of caller_frame.sender()
1105
1106 if (JvmtiExport::can_post_on_exceptions()) {
1107 // "Full-speed catching" is not necessary here,
1108 // since we're notifying the VM on every catch.
1109 // Force deoptimization and the rest of the lookup
1110 // will be fine.
1111 deoptimize_caller_frame(thread);
1112 }
1113
1114 // Check the stack guard pages. If enabled, look for handler in this frame;
1115 // otherwise, forcibly unwind the frame.
1116 //
1117 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1118 bool force_unwind = !thread->reguard_stack();
1119 bool deopting = false;
1120 if (nm->is_deopt_pc(pc)) {
1121 deopting = true;
1122 RegisterMap map(thread, false);
1123 frame deoptee = thread->last_frame().sender(&map);
1124 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1125 // Adjust the pc back to the original throwing pc
1126 pc = deoptee.pc();
1127 }
1128
1129 // If we are forcing an unwind because of stack overflow then deopt is
1130 // irrelevant since we are throwing the frame away anyway.
1131
1132 if (deopting && !force_unwind) {
1133 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1134 } else {
1135
1136 handler_address =
1137 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1138
1139 if (handler_address == NULL) {
1140 Handle original_exception(thread, exception());
1141 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1142 assert (handler_address != NULL, "must have compiled handler");
1143 // Update the exception cache only when the unwind was not forced
1144 // and there didn't happen another exception during the computation of the
1145 // compiled exception handler.
1146 if (!force_unwind && original_exception() == exception()) {
1147 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1148 }
1149 } else {
1150 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1151 }
1152 }
1153
1154 thread->set_exception_pc(pc);
1155 thread->set_exception_handler_pc(handler_address);
1156
1157 // Check if the exception PC is a MethodHandle call site.
1158 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1159 }
1160
1161 // Restore correct return pc. Was saved above.
1162 thread->set_exception_oop(exception());
1163 return handler_address;
1164
1165 JRT_END
1166
1167 // We are entering here from exception_blob
1168 // If there is a compiled exception handler in this method, we will continue there;
1169 // otherwise we will unwind the stack and continue at the caller of top frame method
1170 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1171 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1172 // we looked up the handler for has been deoptimized in the meantime. If it has been
1173 // we must not use the handler and instead return the deopt blob.
1174 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1175 //
1176 // We are in Java not VM and in debug mode we have a NoHandleMark
1177 //
1178 #ifndef PRODUCT
1179 SharedRuntime::_find_handler_ctr++; // find exception handler
1180 #endif
1181 debug_only(NoHandleMark __hm;)
1182 nmethod* nm = NULL;
1183 address handler_address = NULL;
1184 {
1185 // Enter the VM
1186
1187 ResetNoHandleMark rnhm;
1188 handler_address = handle_exception_C_helper(thread, nm);
1189 }
1190
1191 // Back in java: Use no oops, DON'T safepoint
1192
1193 // Now check to see if the handler we are returning is in a now
1194 // deoptimized frame
1195
1196 if (nm != NULL) {
1197 RegisterMap map(thread, false);
1198 frame caller = thread->last_frame().sender(&map);
1199 #ifdef ASSERT
1200 assert(caller.is_compiled_frame(), "must be");
1201 #endif // ASSERT
1202 if (caller.is_deoptimized_frame()) {
1203 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1204 }
1205 }
1206 return handler_address;
1207 }
1208
1209 //------------------------------rethrow----------------------------------------
1210 // We get here after compiled code has executed a 'RethrowNode'. The callee
1211 // is either throwing or rethrowing an exception. The callee-save registers
1212 // have been restored, synchronized objects have been unlocked and the callee
1213 // stack frame has been removed. The return address was passed in.
1214 // Exception oop is passed as the 1st argument. This routine is then called
1215 // from the stub. On exit, we know where to jump in the caller's code.
1216 // After this C code exits, the stub will pop his frame and end in a jump
1217 // (instead of a return). We enter the caller's default handler.
1218 //
1219 // This must be JRT_LEAF:
1220 // - caller will not change its state as we cannot block on exit,
1221 // therefore raw_exception_handler_for_return_address is all it takes
1222 // to handle deoptimized blobs
1223 //
1224 // However, there needs to be a safepoint check in the middle! So compiled
1225 // safepoints are completely watertight.
1226 //
1227 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1228 //
1229 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1230 //
1231 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1232 #ifndef PRODUCT
1233 SharedRuntime::_rethrow_ctr++; // count rethrows
1234 #endif
1235 assert (exception != NULL, "should have thrown a NULLPointerException");
1236 #ifdef ASSERT
1237 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1238 // should throw an exception here
1239 ShouldNotReachHere();
1240 }
1241 #endif
1242
1243 thread->set_vm_result(exception);
1244 // Frame not compiled (handles deoptimization blob)
1245 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1246 }
1247
1248
1249 const TypeFunc *OptoRuntime::rethrow_Type() {
1250 // create input type (domain)
1251 const Type **fields = TypeTuple::fields(1);
1252 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1253 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1254
1255 // create result type (range)
1256 fields = TypeTuple::fields(1);
1257 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1258 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1259
1260 return TypeFunc::make(domain, range);
1261 }
1262
1263
1264 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1265 // Deoptimize the caller before continuing, as the compiled
1266 // exception handler table may not be valid.
1267 if (!StressCompiledExceptionHandlers && doit) {
1268 deoptimize_caller_frame(thread);
1269 }
1270 }
1271
1272 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1273 // Called from within the owner thread, so no need for safepoint
1274 RegisterMap reg_map(thread);
1275 frame stub_frame = thread->last_frame();
1276 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1277 frame caller_frame = stub_frame.sender(®_map);
1278
1279 // Deoptimize the caller frame.
1280 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1281 }
1282
1283
1284 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1285 // Called from within the owner thread, so no need for safepoint
1286 RegisterMap reg_map(thread);
1287 frame stub_frame = thread->last_frame();
1288 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1289 frame caller_frame = stub_frame.sender(®_map);
1290 return caller_frame.is_deoptimized_frame();
1291 }
1292
1293
1294 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1295 // create input type (domain)
1296 const Type **fields = TypeTuple::fields(1);
1297 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1298 // // The JavaThread* is passed to each routine as the last argument
1299 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1300 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1301
1302 // create result type (range)
1303 fields = TypeTuple::fields(0);
1304
1305 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1306
1307 return TypeFunc::make(domain,range);
1308 }
1309
1310
1311 //-----------------------------------------------------------------------------
1312 // Dtrace support. entry and exit probes have the same signature
1313 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1314 // create input type (domain)
1315 const Type **fields = TypeTuple::fields(2);
1316 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1317 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1318 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1319
1320 // create result type (range)
1321 fields = TypeTuple::fields(0);
1322
1323 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1324
1325 return TypeFunc::make(domain,range);
1326 }
1327
1328 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1329 // create input type (domain)
1330 const Type **fields = TypeTuple::fields(2);
1331 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1332 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1333
1334 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1335
1336 // create result type (range)
1337 fields = TypeTuple::fields(0);
1338
1339 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1340
1341 return TypeFunc::make(domain,range);
1342 }
1343
1344
1345 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1346 assert(obj->is_oop(), "must be a valid oop");
1347 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1348 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1349 JRT_END
1350
1351 //-----------------------------------------------------------------------------
1352
1353 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1354
1355 //
1356 // dump the collected NamedCounters.
1357 //
1358 void OptoRuntime::print_named_counters() {
1359 int total_lock_count = 0;
1360 int eliminated_lock_count = 0;
1361
1362 NamedCounter* c = _named_counters;
1363 while (c) {
1364 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1365 int count = c->count();
1366 if (count > 0) {
1367 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1368 if (Verbose) {
1369 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1370 }
1371 total_lock_count += count;
1372 if (eliminated) {
1373 eliminated_lock_count += count;
1374 }
1375 }
1376 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1377 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1378 if (blc->nonzero()) {
1379 tty->print_cr("%s", c->name());
1380 blc->print_on(tty);
1381 }
1382 #if INCLUDE_RTM_OPT
1383 } else if (c->tag() == NamedCounter::RTMLockingCounter) {
1384 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters();
1385 if (rlc->nonzero()) {
1386 tty->print_cr("%s", c->name());
1387 rlc->print_on(tty);
1388 }
1389 #endif
1390 }
1391 c = c->next();
1392 }
1393 if (total_lock_count > 0) {
1394 tty->print_cr("dynamic locks: %d", total_lock_count);
1395 if (eliminated_lock_count) {
1396 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1397 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1398 }
1399 }
1400 }
1401
1402 //
1403 // Allocate a new NamedCounter. The JVMState is used to generate the
1404 // name which consists of method@line for the inlining tree.
1405 //
1406
1407 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1408 int max_depth = youngest_jvms->depth();
1409
1410 // Visit scopes from youngest to oldest.
1411 bool first = true;
1412 stringStream st;
1413 for (int depth = max_depth; depth >= 1; depth--) {
1414 JVMState* jvms = youngest_jvms->of_depth(depth);
1415 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1416 if (!first) {
1417 st.print(" ");
1418 } else {
1419 first = false;
1420 }
1421 int bci = jvms->bci();
1422 if (bci < 0) bci = 0;
1423 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1424 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1425 }
1426 NamedCounter* c;
1427 if (tag == NamedCounter::BiasedLockingCounter) {
1428 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1429 } else if (tag == NamedCounter::RTMLockingCounter) {
1430 c = new RTMLockingNamedCounter(strdup(st.as_string()));
1431 } else {
1432 c = new NamedCounter(strdup(st.as_string()), tag);
1433 }
1434
1435 // atomically add the new counter to the head of the list. We only
1436 // add counters so this is safe.
1437 NamedCounter* head;
1438 do {
1439 c->set_next(NULL);
1440 head = _named_counters;
1441 c->set_next(head);
1442 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1443 return c;
1444 }
1445
1446 //-----------------------------------------------------------------------------
1447 // Non-product code
1448 #ifndef PRODUCT
1449
1450 int trace_exception_counter = 0;
1451 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1452 ttyLocker ttyl;
1453 trace_exception_counter++;
1454 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1455 exception_oop->print_value();
1456 tty->print(" in ");
1457 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1458 if (blob->is_nmethod()) {
1459 nmethod* nm = blob->as_nmethod_or_null();
1460 nm->method()->print_value();
1461 } else if (blob->is_runtime_stub()) {
1462 tty->print("<runtime-stub>");
1463 } else {
1464 tty->print("<unknown>");
1465 }
1466 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc));
1467 tty->print_cr("]");
1468 }
1469
1470 #endif // PRODUCT
1471
1472
1473 # ifdef ENABLE_ZAP_DEAD_LOCALS
1474 // Called from call sites in compiled code with oop maps (actually safepoints)
1475 // Zaps dead locals in first java frame.
1476 // Is entry because may need to lock to generate oop maps
1477 // Currently, only used for compiler frames, but someday may be used
1478 // for interpreter frames, too.
1479
1480 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1481
1482 // avoid pointers to member funcs with these helpers
1483 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1484 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1485
1486
1487 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1488 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1489 assert(JavaThread::current() == thread, "is this needed?");
1490
1491 if ( !ZapDeadCompiledLocals ) return;
1492
1493 bool skip = false;
1494
1495 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1496 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1497 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1498 warning("starting zapping after skipping");
1499
1500 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1501 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1502 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1503 warning("about to zap last zap");
1504
1505 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1506
1507 if ( skip ) return;
1508
1509 // find java frame and zap it
1510
1511 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1512 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1513 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1514 return;
1515 }
1516 }
1517 warning("no frame found to zap in zap_dead_Java_locals_C");
1518 }
1519
1520 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1521 zap_dead_java_or_native_locals(thread, is_java_frame);
1522 JRT_END
1523
1524 // The following does not work because for one thing, the
1525 // thread state is wrong; it expects java, but it is native.
1526 // Also, the invariants in a native stub are different and
1527 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1528 // in there.
1529 // So for now, we do not zap in native stubs.
1530
1531 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1532 zap_dead_java_or_native_locals(thread, is_native_frame);
1533 JRT_END
1534
1535 # endif