1 /*
2 * Copyright 1998-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 #include "incls/_precompiled.incl"
26 #include "incls/_runtime.cpp.incl"
27
28
29 // For debugging purposes:
30 // To force FullGCALot inside a runtime function, add the following two lines
31 //
32 // Universe::release_fullgc_alot_dummy();
33 // MarkSweep::invoke(0, "Debugging");
34 //
35 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
36
37
38
39
40 // Compiled code entry points
41 address OptoRuntime::_new_instance_Java = NULL;
42 address OptoRuntime::_new_array_Java = NULL;
43 address OptoRuntime::_multianewarray2_Java = NULL;
44 address OptoRuntime::_multianewarray3_Java = NULL;
45 address OptoRuntime::_multianewarray4_Java = NULL;
46 address OptoRuntime::_multianewarray5_Java = NULL;
47 address OptoRuntime::_g1_wb_pre_Java = NULL;
48 address OptoRuntime::_g1_wb_post_Java = NULL;
49 address OptoRuntime::_vtable_must_compile_Java = NULL;
50 address OptoRuntime::_complete_monitor_locking_Java = NULL;
51 address OptoRuntime::_rethrow_Java = NULL;
52
53 address OptoRuntime::_slow_arraycopy_Java = NULL;
54 address OptoRuntime::_register_finalizer_Java = NULL;
55
56 # ifdef ENABLE_ZAP_DEAD_LOCALS
57 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
58 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
59 # endif
60
61
62 // This should be called in an assertion at the start of OptoRuntime routines
63 // which are entered from compiled code (all of them)
64 #ifndef PRODUCT
65 static bool check_compiled_frame(JavaThread* thread) {
66 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
67 #ifdef ASSERT
68 RegisterMap map(thread, false);
69 frame caller = thread->last_frame().sender(&map);
70 assert(caller.is_compiled_frame(), "not being called from compiled like code");
71 #endif /* ASSERT */
72 return true;
73 }
74 #endif
75
76
77 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
78 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)
79
80 void OptoRuntime::generate(ciEnv* env) {
81
82 generate_exception_blob();
83
84 // Note: tls: Means fetching the return oop out of the thread-local storage
85 //
86 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
87 // -------------------------------------------------------------------------------------------------------------------------------
88 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
89 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
90 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
91 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
92 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
93 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
94 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
95 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
96 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false);
97 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
98
99 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
100 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
101
102 # ifdef ENABLE_ZAP_DEAD_LOCALS
103 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
104 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
105 # endif
106
107 }
108
109 #undef gen
110
111
112 // Helper method to do generation of RunTimeStub's
113 address OptoRuntime::generate_stub( ciEnv* env,
114 TypeFunc_generator gen, address C_function,
115 const char *name, int is_fancy_jump,
116 bool pass_tls,
117 bool save_argument_registers,
118 bool return_pc ) {
119 ResourceMark rm;
120 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
121 return C.stub_entry_point();
122 }
123
124 const char* OptoRuntime::stub_name(address entry) {
125 #ifndef PRODUCT
126 CodeBlob* cb = CodeCache::find_blob(entry);
127 RuntimeStub* rs =(RuntimeStub *)cb;
128 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
129 return rs->name();
130 #else
131 // Fast implementation for product mode (maybe it should be inlined too)
132 return "runtime stub";
133 #endif
134 }
135
136
137 //=============================================================================
138 // Opto compiler runtime routines
139 //=============================================================================
140
141
142 //=============================allocation======================================
143 // We failed the fast-path allocation. Now we need to do a scavenge or GC
144 // and try allocation again.
145
146 void OptoRuntime::do_eager_card_mark(JavaThread* thread) {
147 // After any safepoint, just before going back to compiled code,
148 // we perform a card mark. This lets the compiled code omit
149 // card marks for initialization of new objects.
150 // Keep this code consistent with GraphKit::store_barrier.
151
152 oop new_obj = thread->vm_result();
153 if (new_obj == NULL) return;
154
155 assert(Universe::heap()->can_elide_tlab_store_barriers(),
156 "compiler must check this first");
157 new_obj = Universe::heap()->new_store_barrier(new_obj);
158 thread->set_vm_result(new_obj);
159 }
160
161 // object allocation
162 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread))
163 JRT_BLOCK;
164 #ifndef PRODUCT
165 SharedRuntime::_new_instance_ctr++; // new instance requires GC
166 #endif
167 assert(check_compiled_frame(thread), "incorrect caller");
168
169 // These checks are cheap to make and support reflective allocation.
170 int lh = Klass::cast(klass)->layout_helper();
171 if (Klass::layout_helper_needs_slow_path(lh)
172 || !instanceKlass::cast(klass)->is_initialized()) {
173 KlassHandle kh(THREAD, klass);
174 kh->check_valid_for_instantiation(false, THREAD);
175 if (!HAS_PENDING_EXCEPTION) {
176 instanceKlass::cast(kh())->initialize(THREAD);
177 }
178 if (!HAS_PENDING_EXCEPTION) {
179 klass = kh();
180 } else {
181 klass = NULL;
182 }
183 }
184
185 if (klass != NULL) {
186 // Scavenge and allocate an instance.
187 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD);
188 thread->set_vm_result(result);
189
190 // Pass oops back through thread local storage. Our apparent type to Java
191 // is that we return an oop, but we can block on exit from this routine and
192 // a GC can trash the oop in C's return register. The generated stub will
193 // fetch the oop from TLS after any possible GC.
194 }
195
196 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
197 JRT_BLOCK_END;
198
199 if (GraphKit::use_ReduceInitialCardMarks()) {
200 // do them now so we don't have to do them on the fast path
201 do_eager_card_mark(thread);
202 }
203 JRT_END
204
205
206 // array allocation
207 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread))
208 JRT_BLOCK;
209 #ifndef PRODUCT
210 SharedRuntime::_new_array_ctr++; // new array requires GC
211 #endif
212 assert(check_compiled_frame(thread), "incorrect caller");
213
214 // Scavenge and allocate an instance.
215 oop result;
216
217 if (Klass::cast(array_type)->oop_is_typeArray()) {
218 // The oopFactory likes to work with the element type.
219 // (We could bypass the oopFactory, since it doesn't add much value.)
220 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
221 result = oopFactory::new_typeArray(elem_type, len, THREAD);
222 } else {
223 // Although the oopFactory likes to work with the elem_type,
224 // the compiler prefers the array_type, since it must already have
225 // that latter value in hand for the fast path.
226 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass();
227 result = oopFactory::new_objArray(elem_type, len, THREAD);
228 }
229
230 // Pass oops back through thread local storage. Our apparent type to Java
231 // is that we return an oop, but we can block on exit from this routine and
232 // a GC can trash the oop in C's return register. The generated stub will
233 // fetch the oop from TLS after any possible GC.
234 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
235 thread->set_vm_result(result);
236 JRT_BLOCK_END;
237
238 if (GraphKit::use_ReduceInitialCardMarks()) {
239 // do them now so we don't have to do them on the fast path
240 do_eager_card_mark(thread);
241 }
242 JRT_END
243
244 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
245
246 // multianewarray for 2 dimensions
247 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread))
248 #ifndef PRODUCT
249 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
250 #endif
251 assert(check_compiled_frame(thread), "incorrect caller");
252 assert(oop(elem_type)->is_klass(), "not a class");
253 jint dims[2];
254 dims[0] = len1;
255 dims[1] = len2;
256 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
257 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
258 thread->set_vm_result(obj);
259 JRT_END
260
261 // multianewarray for 3 dimensions
262 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread))
263 #ifndef PRODUCT
264 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
265 #endif
266 assert(check_compiled_frame(thread), "incorrect caller");
267 assert(oop(elem_type)->is_klass(), "not a class");
268 jint dims[3];
269 dims[0] = len1;
270 dims[1] = len2;
271 dims[2] = len3;
272 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
273 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
274 thread->set_vm_result(obj);
275 JRT_END
276
277 // multianewarray for 4 dimensions
278 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
279 #ifndef PRODUCT
280 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
281 #endif
282 assert(check_compiled_frame(thread), "incorrect caller");
283 assert(oop(elem_type)->is_klass(), "not a class");
284 jint dims[4];
285 dims[0] = len1;
286 dims[1] = len2;
287 dims[2] = len3;
288 dims[3] = len4;
289 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
290 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
291 thread->set_vm_result(obj);
292 JRT_END
293
294 // multianewarray for 5 dimensions
295 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
296 #ifndef PRODUCT
297 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
298 #endif
299 assert(check_compiled_frame(thread), "incorrect caller");
300 assert(oop(elem_type)->is_klass(), "not a class");
301 jint dims[5];
302 dims[0] = len1;
303 dims[1] = len2;
304 dims[2] = len3;
305 dims[3] = len4;
306 dims[4] = len5;
307 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
308 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
309 thread->set_vm_result(obj);
310 JRT_END
311
312 const TypeFunc *OptoRuntime::new_instance_Type() {
313 // create input type (domain)
314 const Type **fields = TypeTuple::fields(1);
315 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
316 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
317
318 // create result type (range)
319 fields = TypeTuple::fields(1);
320 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
321
322 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
323
324 return TypeFunc::make(domain, range);
325 }
326
327
328 const TypeFunc *OptoRuntime::athrow_Type() {
329 // create input type (domain)
330 const Type **fields = TypeTuple::fields(1);
331 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
332 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
333
334 // create result type (range)
335 fields = TypeTuple::fields(0);
336
337 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
338
339 return TypeFunc::make(domain, range);
340 }
341
342
343 const TypeFunc *OptoRuntime::new_array_Type() {
344 // create input type (domain)
345 const Type **fields = TypeTuple::fields(2);
346 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
347 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
348 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
349
350 // create result type (range)
351 fields = TypeTuple::fields(1);
352 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
353
354 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
355
356 return TypeFunc::make(domain, range);
357 }
358
359 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
360 // create input type (domain)
361 const int nargs = ndim + 1;
362 const Type **fields = TypeTuple::fields(nargs);
363 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
364 for( int i = 1; i < nargs; i++ )
365 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
366 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
367
368 // create result type (range)
369 fields = TypeTuple::fields(1);
370 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
371 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
372
373 return TypeFunc::make(domain, range);
374 }
375
376 const TypeFunc *OptoRuntime::multianewarray2_Type() {
377 return multianewarray_Type(2);
378 }
379
380 const TypeFunc *OptoRuntime::multianewarray3_Type() {
381 return multianewarray_Type(3);
382 }
383
384 const TypeFunc *OptoRuntime::multianewarray4_Type() {
385 return multianewarray_Type(4);
386 }
387
388 const TypeFunc *OptoRuntime::multianewarray5_Type() {
389 return multianewarray_Type(5);
390 }
391
392 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
393 const Type **fields = TypeTuple::fields(2);
394 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
395 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
396 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
397
398 // create result type (range)
399 fields = TypeTuple::fields(0);
400 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
401
402 return TypeFunc::make(domain, range);
403 }
404
405 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
406
407 const Type **fields = TypeTuple::fields(2);
408 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
409 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
410 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
411
412 // create result type (range)
413 fields = TypeTuple::fields(0);
414 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
415
416 return TypeFunc::make(domain, range);
417 }
418
419 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
420 // create input type (domain)
421 const Type **fields = TypeTuple::fields(1);
422 // symbolOop name of class to be loaded
423 fields[TypeFunc::Parms+0] = TypeInt::INT;
424 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
425
426 // create result type (range)
427 fields = TypeTuple::fields(0);
428 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
429
430 return TypeFunc::make(domain, range);
431 }
432
433 # ifdef ENABLE_ZAP_DEAD_LOCALS
434 // Type used for stub generation for zap_dead_locals.
435 // No inputs or outputs
436 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
437 // create input type (domain)
438 const Type **fields = TypeTuple::fields(0);
439 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
440
441 // create result type (range)
442 fields = TypeTuple::fields(0);
443 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
444
445 return TypeFunc::make(domain,range);
446 }
447 # endif
448
449
450 //-----------------------------------------------------------------------------
451 // Monitor Handling
452 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
453 // create input type (domain)
454 const Type **fields = TypeTuple::fields(2);
455 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
456 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
457 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
458
459 // create result type (range)
460 fields = TypeTuple::fields(0);
461
462 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
463
464 return TypeFunc::make(domain,range);
465 }
466
467
468 //-----------------------------------------------------------------------------
469 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
470 // create input type (domain)
471 const Type **fields = TypeTuple::fields(2);
472 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
473 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
474 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
475
476 // create result type (range)
477 fields = TypeTuple::fields(0);
478
479 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
480
481 return TypeFunc::make(domain,range);
482 }
483
484 const TypeFunc* OptoRuntime::flush_windows_Type() {
485 // create input type (domain)
486 const Type** fields = TypeTuple::fields(1);
487 fields[TypeFunc::Parms+0] = NULL; // void
488 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
489
490 // create result type
491 fields = TypeTuple::fields(1);
492 fields[TypeFunc::Parms+0] = NULL; // void
493 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
494
495 return TypeFunc::make(domain, range);
496 }
497
498 const TypeFunc* OptoRuntime::l2f_Type() {
499 // create input type (domain)
500 const Type **fields = TypeTuple::fields(2);
501 fields[TypeFunc::Parms+0] = TypeLong::LONG;
502 fields[TypeFunc::Parms+1] = Type::HALF;
503 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
504
505 // create result type (range)
506 fields = TypeTuple::fields(1);
507 fields[TypeFunc::Parms+0] = Type::FLOAT;
508 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
509
510 return TypeFunc::make(domain, range);
511 }
512
513 const TypeFunc* OptoRuntime::modf_Type() {
514 const Type **fields = TypeTuple::fields(2);
515 fields[TypeFunc::Parms+0] = Type::FLOAT;
516 fields[TypeFunc::Parms+1] = Type::FLOAT;
517 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
518
519 // create result type (range)
520 fields = TypeTuple::fields(1);
521 fields[TypeFunc::Parms+0] = Type::FLOAT;
522
523 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
524
525 return TypeFunc::make(domain, range);
526 }
527
528 const TypeFunc *OptoRuntime::Math_D_D_Type() {
529 // create input type (domain)
530 const Type **fields = TypeTuple::fields(2);
531 // symbolOop name of class to be loaded
532 fields[TypeFunc::Parms+0] = Type::DOUBLE;
533 fields[TypeFunc::Parms+1] = Type::HALF;
534 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
535
536 // create result type (range)
537 fields = TypeTuple::fields(2);
538 fields[TypeFunc::Parms+0] = Type::DOUBLE;
539 fields[TypeFunc::Parms+1] = Type::HALF;
540 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
541
542 return TypeFunc::make(domain, range);
543 }
544
545 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
546 const Type **fields = TypeTuple::fields(4);
547 fields[TypeFunc::Parms+0] = Type::DOUBLE;
548 fields[TypeFunc::Parms+1] = Type::HALF;
549 fields[TypeFunc::Parms+2] = Type::DOUBLE;
550 fields[TypeFunc::Parms+3] = Type::HALF;
551 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
552
553 // create result type (range)
554 fields = TypeTuple::fields(2);
555 fields[TypeFunc::Parms+0] = Type::DOUBLE;
556 fields[TypeFunc::Parms+1] = Type::HALF;
557 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
558
559 return TypeFunc::make(domain, range);
560 }
561
562 //-------------- currentTimeMillis
563
564 const TypeFunc* OptoRuntime::current_time_millis_Type() {
565 // create input type (domain)
566 const Type **fields = TypeTuple::fields(0);
567 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
568
569 // create result type (range)
570 fields = TypeTuple::fields(2);
571 fields[TypeFunc::Parms+0] = TypeLong::LONG;
572 fields[TypeFunc::Parms+1] = Type::HALF;
573 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
574
575 return TypeFunc::make(domain, range);
576 }
577
578 // arraycopy stub variations:
579 enum ArrayCopyType {
580 ac_fast, // void(ptr, ptr, size_t)
581 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
582 ac_slow, // void(ptr, int, ptr, int, int)
583 ac_generic // int(ptr, int, ptr, int, int)
584 };
585
586 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
587 // create input type (domain)
588 int num_args = (act == ac_fast ? 3 : 5);
589 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
590 int argcnt = num_args;
591 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
592 const Type** fields = TypeTuple::fields(argcnt);
593 int argp = TypeFunc::Parms;
594 fields[argp++] = TypePtr::NOTNULL; // src
595 if (num_size_args == 0) {
596 fields[argp++] = TypeInt::INT; // src_pos
597 }
598 fields[argp++] = TypePtr::NOTNULL; // dest
599 if (num_size_args == 0) {
600 fields[argp++] = TypeInt::INT; // dest_pos
601 fields[argp++] = TypeInt::INT; // length
602 }
603 while (num_size_args-- > 0) {
604 fields[argp++] = TypeX_X; // size in whatevers (size_t)
605 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
606 }
607 if (act == ac_checkcast) {
608 fields[argp++] = TypePtr::NOTNULL; // super_klass
609 }
610 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
611 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
612
613 // create result type if needed
614 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
615 fields = TypeTuple::fields(1);
616 if (retcnt == 0)
617 fields[TypeFunc::Parms+0] = NULL; // void
618 else
619 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
620 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
621 return TypeFunc::make(domain, range);
622 }
623
624 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
625 // This signature is simple: Two base pointers and a size_t.
626 return make_arraycopy_Type(ac_fast);
627 }
628
629 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
630 // An extension of fast_arraycopy_Type which adds type checking.
631 return make_arraycopy_Type(ac_checkcast);
632 }
633
634 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
635 // This signature is exactly the same as System.arraycopy.
636 // There are no intptr_t (int/long) arguments.
637 return make_arraycopy_Type(ac_slow);
638 }
639
640 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
641 // This signature is like System.arraycopy, except that it returns status.
642 return make_arraycopy_Type(ac_generic);
643 }
644
645
646 //------------- Interpreter state access for on stack replacement
647 const TypeFunc* OptoRuntime::osr_end_Type() {
648 // create input type (domain)
649 const Type **fields = TypeTuple::fields(1);
650 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
651 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
652
653 // create result type
654 fields = TypeTuple::fields(1);
655 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
656 fields[TypeFunc::Parms+0] = NULL; // void
657 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
658 return TypeFunc::make(domain, range);
659 }
660
661 //-------------- methodData update helpers
662
663 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
664 // create input type (domain)
665 const Type **fields = TypeTuple::fields(2);
666 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
667 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
668 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
669
670 // create result type
671 fields = TypeTuple::fields(1);
672 fields[TypeFunc::Parms+0] = NULL; // void
673 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
674 return TypeFunc::make(domain,range);
675 }
676
677 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
678 if (receiver == NULL) return;
679 klassOop receiver_klass = receiver->klass();
680
681 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
682 int empty_row = -1; // free row, if any is encountered
683
684 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
685 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
686 // if (vc->receiver(row) == receiver_klass)
687 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
688 intptr_t row_recv = *(mdp + receiver_off);
689 if (row_recv == (intptr_t) receiver_klass) {
690 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
691 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
692 *(mdp + count_off) += DataLayout::counter_increment;
693 return;
694 } else if (row_recv == 0) {
695 // else if (vc->receiver(row) == NULL)
696 empty_row = (int) row;
697 }
698 }
699
700 if (empty_row != -1) {
701 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
702 // vc->set_receiver(empty_row, receiver_klass);
703 *(mdp + receiver_off) = (intptr_t) receiver_klass;
704 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
705 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
706 *(mdp + count_off) = DataLayout::counter_increment;
707 }
708 JRT_END
709
710 //-----------------------------------------------------------------------------
711 // implicit exception support.
712
713 static void report_null_exception_in_code_cache(address exception_pc) {
714 ResourceMark rm;
715 CodeBlob* n = CodeCache::find_blob(exception_pc);
716 if (n != NULL) {
717 tty->print_cr("#");
718 tty->print_cr("# HotSpot Runtime Error, null exception in generated code");
719 tty->print_cr("#");
720 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc);
721
722 if (n->is_nmethod()) {
723 methodOop method = ((nmethod*)n)->method();
724 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string());
725 tty->print_cr("#");
726 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) {
727 const char* title = "HotSpot Runtime Error";
728 const char* question = "Do you want to exclude compilation of this method in future runs?";
729 if (os::message_box(title, question)) {
730 CompilerOracle::append_comment_to_file("");
731 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude");
732 CompilerOracle::append_comment_to_file("");
733 CompilerOracle::append_exclude_to_file(method);
734 tty->print_cr("#");
735 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile);
736 tty->print_cr("#");
737 }
738 }
739 fatal("Implicit null exception happened in compiled method");
740 } else {
741 n->print();
742 fatal("Implicit null exception happened in generated stub");
743 }
744 }
745 fatal("Implicit null exception at wrong place");
746 }
747
748
749 //-------------------------------------------------------------------------------------
750 // register policy
751
752 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
753 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
754 switch (register_save_policy[reg]) {
755 case 'C': return false; //SOC
756 case 'E': return true ; //SOE
757 case 'N': return false; //NS
758 case 'A': return false; //AS
759 }
760 ShouldNotReachHere();
761 return false;
762 }
763
764 //-----------------------------------------------------------------------
765 // Exceptions
766 //
767
768 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
769
770 // The method is an entry that is always called by a C++ method not
771 // directly from compiled code. Compiled code will call the C++ method following.
772 // We can't allow async exception to be installed during exception processing.
773 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
774
775 // Do not confuse exception_oop with pending_exception. The exception_oop
776 // is only used to pass arguments into the method. Not for general
777 // exception handling. DO NOT CHANGE IT to use pending_exception, since
778 // the runtime stubs checks this on exit.
779 assert(thread->exception_oop() != NULL, "exception oop is found");
780 address handler_address = NULL;
781
782 Handle exception(thread, thread->exception_oop());
783
784 if (TraceExceptions) {
785 trace_exception(exception(), thread->exception_pc(), "");
786 }
787 // for AbortVMOnException flag
788 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
789
790 #ifdef ASSERT
791 if (!(exception->is_a(SystemDictionary::throwable_klass()))) {
792 // should throw an exception here
793 ShouldNotReachHere();
794 }
795 #endif
796
797
798 // new exception handling: this method is entered only from adapters
799 // exceptions from compiled java methods are handled in compiled code
800 // using rethrow node
801
802 address pc = thread->exception_pc();
803 nm = CodeCache::find_nmethod(pc);
804 assert(nm != NULL, "No NMethod found");
805 if (nm->is_native_method()) {
806 fatal("Native mathod should not have path to exception handling");
807 } else {
808 // we are switching to old paradigm: search for exception handler in caller_frame
809 // instead in exception handler of caller_frame.sender()
810
811 if (JvmtiExport::can_post_exceptions()) {
812 // "Full-speed catching" is not necessary here,
813 // since we're notifying the VM on every catch.
814 // Force deoptimization and the rest of the lookup
815 // will be fine.
816 deoptimize_caller_frame(thread, true);
817 }
818
819 // Check the stack guard pages. If enabled, look for handler in this frame;
820 // otherwise, forcibly unwind the frame.
821 //
822 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
823 bool force_unwind = !thread->reguard_stack();
824 bool deopting = false;
825 if (nm->is_deopt_pc(pc)) {
826 deopting = true;
827 RegisterMap map(thread, false);
828 frame deoptee = thread->last_frame().sender(&map);
829 assert(deoptee.is_deoptimized_frame(), "must be deopted");
830 // Adjust the pc back to the original throwing pc
831 pc = deoptee.pc();
832 }
833
834 // If we are forcing an unwind because of stack overflow then deopt is
835 // irrelevant sice we are throwing the frame away anyway.
836
837 if (deopting && !force_unwind) {
838 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
839 } else {
840
841 handler_address =
842 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
843
844 if (handler_address == NULL) {
845 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
846 assert (handler_address != NULL, "must have compiled handler");
847 // Update the exception cache only when the unwind was not forced.
848 if (!force_unwind) {
849 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
850 }
851 } else {
852 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
853 }
854 }
855
856 thread->set_exception_pc(pc);
857 thread->set_exception_handler_pc(handler_address);
858 thread->set_exception_stack_size(0);
859
860 // Check if the exception PC is a MethodHandle call.
861 thread->set_is_method_handle_exception(nm->is_method_handle_return(pc));
862 }
863
864 // Restore correct return pc. Was saved above.
865 thread->set_exception_oop(exception());
866 return handler_address;
867
868 JRT_END
869
870 // We are entering here from exception_blob
871 // If there is a compiled exception handler in this method, we will continue there;
872 // otherwise we will unwind the stack and continue at the caller of top frame method
873 // Note we enter without the usual JRT wrapper. We will call a helper routine that
874 // will do the normal VM entry. We do it this way so that we can see if the nmethod
875 // we looked up the handler for has been deoptimized in the meantime. If it has been
876 // we must not use the handler and instread return the deopt blob.
877 address OptoRuntime::handle_exception_C(JavaThread* thread) {
878 //
879 // We are in Java not VM and in debug mode we have a NoHandleMark
880 //
881 #ifndef PRODUCT
882 SharedRuntime::_find_handler_ctr++; // find exception handler
883 #endif
884 debug_only(NoHandleMark __hm;)
885 nmethod* nm = NULL;
886 address handler_address = NULL;
887 {
888 // Enter the VM
889
890 ResetNoHandleMark rnhm;
891 handler_address = handle_exception_C_helper(thread, nm);
892 }
893
894 // Back in java: Use no oops, DON'T safepoint
895
896 // Now check to see if the handler we are returning is in a now
897 // deoptimized frame
898
899 if (nm != NULL) {
900 RegisterMap map(thread, false);
901 frame caller = thread->last_frame().sender(&map);
902 #ifdef ASSERT
903 assert(caller.is_compiled_frame(), "must be");
904 #endif // ASSERT
905 if (caller.is_deoptimized_frame()) {
906 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
907 }
908 }
909 return handler_address;
910 }
911
912 //------------------------------rethrow----------------------------------------
913 // We get here after compiled code has executed a 'RethrowNode'. The callee
914 // is either throwing or rethrowing an exception. The callee-save registers
915 // have been restored, synchronized objects have been unlocked and the callee
916 // stack frame has been removed. The return address was passed in.
917 // Exception oop is passed as the 1st argument. This routine is then called
918 // from the stub. On exit, we know where to jump in the caller's code.
919 // After this C code exits, the stub will pop his frame and end in a jump
920 // (instead of a return). We enter the caller's default handler.
921 //
922 // This must be JRT_LEAF:
923 // - caller will not change its state as we cannot block on exit,
924 // therefore raw_exception_handler_for_return_address is all it takes
925 // to handle deoptimized blobs
926 //
927 // However, there needs to be a safepoint check in the middle! So compiled
928 // safepoints are completely watertight.
929 //
930 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
931 //
932 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
933 //
934 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
935 #ifndef PRODUCT
936 SharedRuntime::_rethrow_ctr++; // count rethrows
937 #endif
938 assert (exception != NULL, "should have thrown a NULLPointerException");
939 #ifdef ASSERT
940 if (!(exception->is_a(SystemDictionary::throwable_klass()))) {
941 // should throw an exception here
942 ShouldNotReachHere();
943 }
944 #endif
945
946 thread->set_vm_result(exception);
947 // Frame not compiled (handles deoptimization blob)
948 return SharedRuntime::raw_exception_handler_for_return_address(ret_pc);
949 }
950
951
952 const TypeFunc *OptoRuntime::rethrow_Type() {
953 // create input type (domain)
954 const Type **fields = TypeTuple::fields(1);
955 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
956 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
957
958 // create result type (range)
959 fields = TypeTuple::fields(1);
960 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
961 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
962
963 return TypeFunc::make(domain, range);
964 }
965
966
967 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
968 // Deoptimize frame
969 if (doit) {
970 // Called from within the owner thread, so no need for safepoint
971 RegisterMap reg_map(thread);
972 frame stub_frame = thread->last_frame();
973 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
974 frame caller_frame = stub_frame.sender(®_map);
975
976 VM_DeoptimizeFrame deopt(thread, caller_frame.id());
977 VMThread::execute(&deopt);
978 }
979 }
980
981
982 const TypeFunc *OptoRuntime::register_finalizer_Type() {
983 // create input type (domain)
984 const Type **fields = TypeTuple::fields(1);
985 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
986 // // The JavaThread* is passed to each routine as the last argument
987 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
988 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
989
990 // create result type (range)
991 fields = TypeTuple::fields(0);
992
993 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
994
995 return TypeFunc::make(domain,range);
996 }
997
998
999 //-----------------------------------------------------------------------------
1000 // Dtrace support. entry and exit probes have the same signature
1001 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1002 // create input type (domain)
1003 const Type **fields = TypeTuple::fields(2);
1004 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1005 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering
1006 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1007
1008 // create result type (range)
1009 fields = TypeTuple::fields(0);
1010
1011 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1012
1013 return TypeFunc::make(domain,range);
1014 }
1015
1016 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1017 // create input type (domain)
1018 const Type **fields = TypeTuple::fields(2);
1019 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1020 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1021
1022 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1023
1024 // create result type (range)
1025 fields = TypeTuple::fields(0);
1026
1027 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1028
1029 return TypeFunc::make(domain,range);
1030 }
1031
1032
1033 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1034 assert(obj->is_oop(), "must be a valid oop");
1035 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
1036 instanceKlass::register_finalizer(instanceOop(obj), CHECK);
1037 JRT_END
1038
1039 //-----------------------------------------------------------------------------
1040
1041 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1042
1043 //
1044 // dump the collected NamedCounters.
1045 //
1046 void OptoRuntime::print_named_counters() {
1047 int total_lock_count = 0;
1048 int eliminated_lock_count = 0;
1049
1050 NamedCounter* c = _named_counters;
1051 while (c) {
1052 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1053 int count = c->count();
1054 if (count > 0) {
1055 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1056 if (Verbose) {
1057 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1058 }
1059 total_lock_count += count;
1060 if (eliminated) {
1061 eliminated_lock_count += count;
1062 }
1063 }
1064 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1065 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1066 if (blc->nonzero()) {
1067 tty->print_cr("%s", c->name());
1068 blc->print_on(tty);
1069 }
1070 }
1071 c = c->next();
1072 }
1073 if (total_lock_count > 0) {
1074 tty->print_cr("dynamic locks: %d", total_lock_count);
1075 if (eliminated_lock_count) {
1076 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1077 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1078 }
1079 }
1080 }
1081
1082 //
1083 // Allocate a new NamedCounter. The JVMState is used to generate the
1084 // name which consists of method@line for the inlining tree.
1085 //
1086
1087 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1088 int max_depth = youngest_jvms->depth();
1089
1090 // Visit scopes from youngest to oldest.
1091 bool first = true;
1092 stringStream st;
1093 for (int depth = max_depth; depth >= 1; depth--) {
1094 JVMState* jvms = youngest_jvms->of_depth(depth);
1095 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1096 if (!first) {
1097 st.print(" ");
1098 } else {
1099 first = false;
1100 }
1101 int bci = jvms->bci();
1102 if (bci < 0) bci = 0;
1103 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1104 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1105 }
1106 NamedCounter* c;
1107 if (tag == NamedCounter::BiasedLockingCounter) {
1108 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1109 } else {
1110 c = new NamedCounter(strdup(st.as_string()), tag);
1111 }
1112
1113 // atomically add the new counter to the head of the list. We only
1114 // add counters so this is safe.
1115 NamedCounter* head;
1116 do {
1117 head = _named_counters;
1118 c->set_next(head);
1119 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1120 return c;
1121 }
1122
1123 //-----------------------------------------------------------------------------
1124 // Non-product code
1125 #ifndef PRODUCT
1126
1127 int trace_exception_counter = 0;
1128 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1129 ttyLocker ttyl;
1130 trace_exception_counter++;
1131 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1132 exception_oop->print_value();
1133 tty->print(" in ");
1134 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1135 if (blob->is_nmethod()) {
1136 ((nmethod*)blob)->method()->print_value();
1137 } else if (blob->is_runtime_stub()) {
1138 tty->print("<runtime-stub>");
1139 } else {
1140 tty->print("<unknown>");
1141 }
1142 tty->print(" at " INTPTR_FORMAT, exception_pc);
1143 tty->print_cr("]");
1144 }
1145
1146 #endif // PRODUCT
1147
1148
1149 # ifdef ENABLE_ZAP_DEAD_LOCALS
1150 // Called from call sites in compiled code with oop maps (actually safepoints)
1151 // Zaps dead locals in first java frame.
1152 // Is entry because may need to lock to generate oop maps
1153 // Currently, only used for compiler frames, but someday may be used
1154 // for interpreter frames, too.
1155
1156 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1157
1158 // avoid pointers to member funcs with these helpers
1159 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1160 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1161
1162
1163 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1164 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1165 assert(JavaThread::current() == thread, "is this needed?");
1166
1167 if ( !ZapDeadCompiledLocals ) return;
1168
1169 bool skip = false;
1170
1171 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1172 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1173 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1174 warning("starting zapping after skipping");
1175
1176 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1177 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1178 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1179 warning("about to zap last zap");
1180
1181 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1182
1183 if ( skip ) return;
1184
1185 // find java frame and zap it
1186
1187 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1188 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1189 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1190 return;
1191 }
1192 }
1193 warning("no frame found to zap in zap_dead_Java_locals_C");
1194 }
1195
1196 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1197 zap_dead_java_or_native_locals(thread, is_java_frame);
1198 JRT_END
1199
1200 // The following does not work because for one thing, the
1201 // thread state is wrong; it expects java, but it is native.
1202 // Also, the invariants in a native stub are different and
1203 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1204 // in there.
1205 // So for now, we do not zap in native stubs.
1206
1207 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1208 zap_dead_java_or_native_locals(thread, is_native_frame);
1209 JRT_END
1210
1211 # endif