1 /*
2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/graphKit.hpp"
52 #include "opto/machnode.hpp"
53 #include "opto/matcher.hpp"
54 #include "opto/memnode.hpp"
55 #include "opto/mulnode.hpp"
56 #include "opto/runtime.hpp"
57 #include "opto/subnode.hpp"
58 #include "runtime/atomic.inline.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 fields[TypeFunc::Parms+0] = TypeInt::INT; // trap_reason (deopt reason and action)
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 if (Matcher::pass_original_key_for_aes()) {
829 num_args = 4;
830 }
831 int argcnt = num_args;
832 const Type** fields = TypeTuple::fields(argcnt);
833 int argp = TypeFunc::Parms;
834 fields[argp++] = TypePtr::NOTNULL; // src
835 fields[argp++] = TypePtr::NOTNULL; // dest
836 fields[argp++] = TypePtr::NOTNULL; // k array
837 if (Matcher::pass_original_key_for_aes()) {
838 fields[argp++] = TypePtr::NOTNULL; // original k array
839 }
840 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
841 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
842
843 // no result type needed
844 fields = TypeTuple::fields(1);
845 fields[TypeFunc::Parms+0] = NULL; // void
846 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
847 return TypeFunc::make(domain, range);
848 }
849
850 /**
851 * int updateBytesCRC32(int crc, byte* b, int len)
852 */
853 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
854 // create input type (domain)
855 int num_args = 3;
856 int argcnt = num_args;
857 const Type** fields = TypeTuple::fields(argcnt);
858 int argp = TypeFunc::Parms;
859 fields[argp++] = TypeInt::INT; // crc
860 fields[argp++] = TypePtr::NOTNULL; // src
861 fields[argp++] = TypeInt::INT; // len
862 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
863 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
864
865 // result type needed
866 fields = TypeTuple::fields(1);
867 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
868 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
869 return TypeFunc::make(domain, range);
870 }
871
872 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int
873 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
874 // create input type (domain)
875 int num_args = 5;
876 if (Matcher::pass_original_key_for_aes()) {
877 num_args = 6;
878 }
879 int argcnt = num_args;
880 const Type** fields = TypeTuple::fields(argcnt);
881 int argp = TypeFunc::Parms;
882 fields[argp++] = TypePtr::NOTNULL; // src
883 fields[argp++] = TypePtr::NOTNULL; // dest
884 fields[argp++] = TypePtr::NOTNULL; // k array
885 fields[argp++] = TypePtr::NOTNULL; // r array
886 fields[argp++] = TypeInt::INT; // src len
887 if (Matcher::pass_original_key_for_aes()) {
888 fields[argp++] = TypePtr::NOTNULL; // original k array
889 }
890 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
891 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
892
893 // returning cipher len (int)
894 fields = TypeTuple::fields(1);
895 fields[TypeFunc::Parms+0] = TypeInt::INT;
896 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
897 return TypeFunc::make(domain, range);
898 }
899
900 /*
901 * void implCompress(byte[] buf, int ofs)
902 */
903 const TypeFunc* OptoRuntime::sha_implCompress_Type() {
904 // create input type (domain)
905 int num_args = 2;
906 int argcnt = num_args;
907 const Type** fields = TypeTuple::fields(argcnt);
908 int argp = TypeFunc::Parms;
909 fields[argp++] = TypePtr::NOTNULL; // buf
910 fields[argp++] = TypePtr::NOTNULL; // state
911 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
912 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
913
914 // no result type needed
915 fields = TypeTuple::fields(1);
916 fields[TypeFunc::Parms+0] = NULL; // void
917 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
918 return TypeFunc::make(domain, range);
919 }
920
921 /*
922 * int implCompressMultiBlock(byte[] b, int ofs, int limit)
923 */
924 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() {
925 // create input type (domain)
926 int num_args = 4;
927 int argcnt = num_args;
928 const Type** fields = TypeTuple::fields(argcnt);
929 int argp = TypeFunc::Parms;
930 fields[argp++] = TypePtr::NOTNULL; // buf
931 fields[argp++] = TypePtr::NOTNULL; // state
932 fields[argp++] = TypeInt::INT; // ofs
933 fields[argp++] = TypeInt::INT; // limit
934 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
935 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
936
937 // returning ofs (int)
938 fields = TypeTuple::fields(1);
939 fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs
940 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
941 return TypeFunc::make(domain, range);
942 }
943
944 //------------- Interpreter state access for on stack replacement
945 const TypeFunc* OptoRuntime::osr_end_Type() {
946 // create input type (domain)
947 const Type **fields = TypeTuple::fields(1);
948 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
949 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
950
951 // create result type
952 fields = TypeTuple::fields(1);
953 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
954 fields[TypeFunc::Parms+0] = NULL; // void
955 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
956 return TypeFunc::make(domain, range);
957 }
958
959 //-------------- methodData update helpers
960
961 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
962 // create input type (domain)
963 const Type **fields = TypeTuple::fields(2);
964 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
965 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
966 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
967
968 // create result type
969 fields = TypeTuple::fields(1);
970 fields[TypeFunc::Parms+0] = NULL; // void
971 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
972 return TypeFunc::make(domain,range);
973 }
974
975 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
976 if (receiver == NULL) return;
977 Klass* receiver_klass = receiver->klass();
978
979 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
980 int empty_row = -1; // free row, if any is encountered
981
982 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
983 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
984 // if (vc->receiver(row) == receiver_klass)
985 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
986 intptr_t row_recv = *(mdp + receiver_off);
987 if (row_recv == (intptr_t) receiver_klass) {
988 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
989 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
990 *(mdp + count_off) += DataLayout::counter_increment;
991 return;
992 } else if (row_recv == 0) {
993 // else if (vc->receiver(row) == NULL)
994 empty_row = (int) row;
995 }
996 }
997
998 if (empty_row != -1) {
999 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
1000 // vc->set_receiver(empty_row, receiver_klass);
1001 *(mdp + receiver_off) = (intptr_t) receiver_klass;
1002 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
1003 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
1004 *(mdp + count_off) = DataLayout::counter_increment;
1005 } else {
1006 // Receiver did not match any saved receiver and there is no empty row for it.
1007 // Increment total counter to indicate polymorphic case.
1008 intptr_t* count_p = (intptr_t*)(((uint8_t*)(data)) + in_bytes(CounterData::count_offset()));
1009 *count_p += DataLayout::counter_increment;
1010 }
1011 JRT_END
1012
1013 //-------------------------------------------------------------------------------------
1014 // register policy
1015
1016 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
1017 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1018 switch (register_save_policy[reg]) {
1019 case 'C': return false; //SOC
1020 case 'E': return true ; //SOE
1021 case 'N': return false; //NS
1022 case 'A': return false; //AS
1023 }
1024 ShouldNotReachHere();
1025 return false;
1026 }
1027
1028 //-----------------------------------------------------------------------
1029 // Exceptions
1030 //
1031
1032 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
1033
1034 // The method is an entry that is always called by a C++ method not
1035 // directly from compiled code. Compiled code will call the C++ method following.
1036 // We can't allow async exception to be installed during exception processing.
1037 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
1038
1039 // Do not confuse exception_oop with pending_exception. The exception_oop
1040 // is only used to pass arguments into the method. Not for general
1041 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1042 // the runtime stubs checks this on exit.
1043 assert(thread->exception_oop() != NULL, "exception oop is found");
1044 address handler_address = NULL;
1045
1046 Handle exception(thread, thread->exception_oop());
1047 address pc = thread->exception_pc();
1048
1049 // Clear out the exception oop and pc since looking up an
1050 // exception handler can cause class loading, which might throw an
1051 // exception and those fields are expected to be clear during
1052 // normal bytecode execution.
1053 thread->clear_exception_oop_and_pc();
1054
1055 if (TraceExceptions) {
1056 trace_exception(exception(), pc, "");
1057 }
1058
1059 // for AbortVMOnException flag
1060 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
1061
1062 #ifdef ASSERT
1063 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1064 // should throw an exception here
1065 ShouldNotReachHere();
1066 }
1067 #endif
1068
1069 // new exception handling: this method is entered only from adapters
1070 // exceptions from compiled java methods are handled in compiled code
1071 // using rethrow node
1072
1073 nm = CodeCache::find_nmethod(pc);
1074 assert(nm != NULL, "No NMethod found");
1075 if (nm->is_native_method()) {
1076 fatal("Native method should not have path to exception handling");
1077 } else {
1078 // we are switching to old paradigm: search for exception handler in caller_frame
1079 // instead in exception handler of caller_frame.sender()
1080
1081 if (JvmtiExport::can_post_on_exceptions()) {
1082 // "Full-speed catching" is not necessary here,
1083 // since we're notifying the VM on every catch.
1084 // Force deoptimization and the rest of the lookup
1085 // will be fine.
1086 deoptimize_caller_frame(thread);
1087 }
1088
1089 // Check the stack guard pages. If enabled, look for handler in this frame;
1090 // otherwise, forcibly unwind the frame.
1091 //
1092 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1093 bool force_unwind = !thread->reguard_stack();
1094 bool deopting = false;
1095 if (nm->is_deopt_pc(pc)) {
1096 deopting = true;
1097 RegisterMap map(thread, false);
1098 frame deoptee = thread->last_frame().sender(&map);
1099 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1100 // Adjust the pc back to the original throwing pc
1101 pc = deoptee.pc();
1102 }
1103
1104 // If we are forcing an unwind because of stack overflow then deopt is
1105 // irrelevant since we are throwing the frame away anyway.
1106
1107 if (deopting && !force_unwind) {
1108 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1109 } else {
1110
1111 handler_address =
1112 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1113
1114 if (handler_address == NULL) {
1115 Handle original_exception(thread, exception());
1116 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
1117 assert (handler_address != NULL, "must have compiled handler");
1118 // Update the exception cache only when the unwind was not forced
1119 // and there didn't happen another exception during the computation of the
1120 // compiled exception handler.
1121 if (!force_unwind && original_exception() == exception()) {
1122 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1123 }
1124 } else {
1125 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1126 }
1127 }
1128
1129 thread->set_exception_pc(pc);
1130 thread->set_exception_handler_pc(handler_address);
1131
1132 // Check if the exception PC is a MethodHandle call site.
1133 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1134 }
1135
1136 // Restore correct return pc. Was saved above.
1137 thread->set_exception_oop(exception());
1138 return handler_address;
1139
1140 JRT_END
1141
1142 // We are entering here from exception_blob
1143 // If there is a compiled exception handler in this method, we will continue there;
1144 // otherwise we will unwind the stack and continue at the caller of top frame method
1145 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1146 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1147 // we looked up the handler for has been deoptimized in the meantime. If it has been
1148 // we must not use the handler and instead return the deopt blob.
1149 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1150 //
1151 // We are in Java not VM and in debug mode we have a NoHandleMark
1152 //
1153 #ifndef PRODUCT
1154 SharedRuntime::_find_handler_ctr++; // find exception handler
1155 #endif
1156 debug_only(NoHandleMark __hm;)
1157 nmethod* nm = NULL;
1158 address handler_address = NULL;
1159 {
1160 // Enter the VM
1161
1162 ResetNoHandleMark rnhm;
1163 handler_address = handle_exception_C_helper(thread, nm);
1164 }
1165
1166 // Back in java: Use no oops, DON'T safepoint
1167
1168 // Now check to see if the handler we are returning is in a now
1169 // deoptimized frame
1170
1171 if (nm != NULL) {
1172 RegisterMap map(thread, false);
1173 frame caller = thread->last_frame().sender(&map);
1174 #ifdef ASSERT
1175 assert(caller.is_compiled_frame(), "must be");
1176 #endif // ASSERT
1177 if (caller.is_deoptimized_frame()) {
1178 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1179 }
1180 }
1181 return handler_address;
1182 }
1183
1184 //------------------------------rethrow----------------------------------------
1185 // We get here after compiled code has executed a 'RethrowNode'. The callee
1186 // is either throwing or rethrowing an exception. The callee-save registers
1187 // have been restored, synchronized objects have been unlocked and the callee
1188 // stack frame has been removed. The return address was passed in.
1189 // Exception oop is passed as the 1st argument. This routine is then called
1190 // from the stub. On exit, we know where to jump in the caller's code.
1191 // After this C code exits, the stub will pop his frame and end in a jump
1192 // (instead of a return). We enter the caller's default handler.
1193 //
1194 // This must be JRT_LEAF:
1195 // - caller will not change its state as we cannot block on exit,
1196 // therefore raw_exception_handler_for_return_address is all it takes
1197 // to handle deoptimized blobs
1198 //
1199 // However, there needs to be a safepoint check in the middle! So compiled
1200 // safepoints are completely watertight.
1201 //
1202 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1203 //
1204 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1205 //
1206 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1207 #ifndef PRODUCT
1208 SharedRuntime::_rethrow_ctr++; // count rethrows
1209 #endif
1210 assert (exception != NULL, "should have thrown a NULLPointerException");
1211 #ifdef ASSERT
1212 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1213 // should throw an exception here
1214 ShouldNotReachHere();
1215 }
1216 #endif
1217
1218 thread->set_vm_result(exception);
1219 // Frame not compiled (handles deoptimization blob)
1220 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1221 }
1222
1223
1224 const TypeFunc *OptoRuntime::rethrow_Type() {
1225 // create input type (domain)
1226 const Type **fields = TypeTuple::fields(1);
1227 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1228 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1229
1230 // create result type (range)
1231 fields = TypeTuple::fields(1);
1232 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1233 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1234
1235 return TypeFunc::make(domain, range);
1236 }
1237
1238
1239 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1240 // Deoptimize the caller before continuing, as the compiled
1241 // exception handler table may not be valid.
1242 if (!StressCompiledExceptionHandlers && doit) {
1243 deoptimize_caller_frame(thread);
1244 }
1245 }
1246
1247 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1248 // Called from within the owner thread, so no need for safepoint
1249 RegisterMap reg_map(thread);
1250 frame stub_frame = thread->last_frame();
1251 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1252 frame caller_frame = stub_frame.sender(®_map);
1253
1254 // Deoptimize the caller frame.
1255 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1256 }
1257
1258
1259 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1260 // Called from within the owner thread, so no need for safepoint
1261 RegisterMap reg_map(thread);
1262 frame stub_frame = thread->last_frame();
1263 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1264 frame caller_frame = stub_frame.sender(®_map);
1265 return caller_frame.is_deoptimized_frame();
1266 }
1267
1268
1269 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1270 // create input type (domain)
1271 const Type **fields = TypeTuple::fields(1);
1272 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1273 // // The JavaThread* is passed to each routine as the last argument
1274 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1275 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1276
1277 // create result type (range)
1278 fields = TypeTuple::fields(0);
1279
1280 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1281
1282 return TypeFunc::make(domain,range);
1283 }
1284
1285
1286 //-----------------------------------------------------------------------------
1287 // Dtrace support. entry and exit probes have the same signature
1288 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1289 // create input type (domain)
1290 const Type **fields = TypeTuple::fields(2);
1291 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1292 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1293 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1294
1295 // create result type (range)
1296 fields = TypeTuple::fields(0);
1297
1298 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1299
1300 return TypeFunc::make(domain,range);
1301 }
1302
1303 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1304 // create input type (domain)
1305 const Type **fields = TypeTuple::fields(2);
1306 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1307 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1308
1309 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1310
1311 // create result type (range)
1312 fields = TypeTuple::fields(0);
1313
1314 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1315
1316 return TypeFunc::make(domain,range);
1317 }
1318
1319
1320 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1321 assert(obj->is_oop(), "must be a valid oop");
1322 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1323 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1324 JRT_END
1325
1326 //-----------------------------------------------------------------------------
1327
1328 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1329
1330 //
1331 // dump the collected NamedCounters.
1332 //
1333 void OptoRuntime::print_named_counters() {
1334 int total_lock_count = 0;
1335 int eliminated_lock_count = 0;
1336
1337 NamedCounter* c = _named_counters;
1338 while (c) {
1339 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1340 int count = c->count();
1341 if (count > 0) {
1342 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1343 if (Verbose) {
1344 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1345 }
1346 total_lock_count += count;
1347 if (eliminated) {
1348 eliminated_lock_count += count;
1349 }
1350 }
1351 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1352 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1353 if (blc->nonzero()) {
1354 tty->print_cr("%s", c->name());
1355 blc->print_on(tty);
1356 }
1357 #if INCLUDE_RTM_OPT
1358 } else if (c->tag() == NamedCounter::RTMLockingCounter) {
1359 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters();
1360 if (rlc->nonzero()) {
1361 tty->print_cr("%s", c->name());
1362 rlc->print_on(tty);
1363 }
1364 #endif
1365 }
1366 c = c->next();
1367 }
1368 if (total_lock_count > 0) {
1369 tty->print_cr("dynamic locks: %d", total_lock_count);
1370 if (eliminated_lock_count) {
1371 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1372 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1373 }
1374 }
1375 }
1376
1377 //
1378 // Allocate a new NamedCounter. The JVMState is used to generate the
1379 // name which consists of method@line for the inlining tree.
1380 //
1381
1382 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1383 int max_depth = youngest_jvms->depth();
1384
1385 // Visit scopes from youngest to oldest.
1386 bool first = true;
1387 stringStream st;
1388 for (int depth = max_depth; depth >= 1; depth--) {
1389 JVMState* jvms = youngest_jvms->of_depth(depth);
1390 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1391 if (!first) {
1392 st.print(" ");
1393 } else {
1394 first = false;
1395 }
1396 int bci = jvms->bci();
1397 if (bci < 0) bci = 0;
1398 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1399 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1400 }
1401 NamedCounter* c;
1402 if (tag == NamedCounter::BiasedLockingCounter) {
1403 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1404 } else if (tag == NamedCounter::RTMLockingCounter) {
1405 c = new RTMLockingNamedCounter(strdup(st.as_string()));
1406 } else {
1407 c = new NamedCounter(strdup(st.as_string()), tag);
1408 }
1409
1410 // atomically add the new counter to the head of the list. We only
1411 // add counters so this is safe.
1412 NamedCounter* head;
1413 do {
1414 c->set_next(NULL);
1415 head = _named_counters;
1416 c->set_next(head);
1417 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1418 return c;
1419 }
1420
1421 //-----------------------------------------------------------------------------
1422 // Non-product code
1423 #ifndef PRODUCT
1424
1425 int trace_exception_counter = 0;
1426 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1427 ttyLocker ttyl;
1428 trace_exception_counter++;
1429 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1430 exception_oop->print_value();
1431 tty->print(" in ");
1432 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1433 if (blob->is_nmethod()) {
1434 nmethod* nm = blob->as_nmethod_or_null();
1435 nm->method()->print_value();
1436 } else if (blob->is_runtime_stub()) {
1437 tty->print("<runtime-stub>");
1438 } else {
1439 tty->print("<unknown>");
1440 }
1441 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc));
1442 tty->print_cr("]");
1443 }
1444
1445 #endif // PRODUCT
1446
1447
1448 # ifdef ENABLE_ZAP_DEAD_LOCALS
1449 // Called from call sites in compiled code with oop maps (actually safepoints)
1450 // Zaps dead locals in first java frame.
1451 // Is entry because may need to lock to generate oop maps
1452 // Currently, only used for compiler frames, but someday may be used
1453 // for interpreter frames, too.
1454
1455 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1456
1457 // avoid pointers to member funcs with these helpers
1458 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1459 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1460
1461
1462 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1463 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1464 assert(JavaThread::current() == thread, "is this needed?");
1465
1466 if ( !ZapDeadCompiledLocals ) return;
1467
1468 bool skip = false;
1469
1470 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1471 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1472 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1473 warning("starting zapping after skipping");
1474
1475 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1476 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1477 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1478 warning("about to zap last zap");
1479
1480 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1481
1482 if ( skip ) return;
1483
1484 // find java frame and zap it
1485
1486 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1487 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1488 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1489 return;
1490 }
1491 }
1492 warning("no frame found to zap in zap_dead_Java_locals_C");
1493 }
1494
1495 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1496 zap_dead_java_or_native_locals(thread, is_java_frame);
1497 JRT_END
1498
1499 // The following does not work because for one thing, the
1500 // thread state is wrong; it expects java, but it is native.
1501 // Also, the invariants in a native stub are different and
1502 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1503 // in there.
1504 // So for now, we do not zap in native stubs.
1505
1506 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1507 zap_dead_java_or_native_locals(thread, is_native_frame);
1508 JRT_END
1509
1510 # endif