1 /*
2 * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/connode.hpp"
52 #include "opto/graphKit.hpp"
53 #include "opto/machnode.hpp"
54 #include "opto/matcher.hpp"
55 #include "opto/memnode.hpp"
56 #include "opto/mulnode.hpp"
57 #include "opto/runtime.hpp"
58 #include "opto/subnode.hpp"
59 #include "runtime/fprofiler.hpp"
60 #include "runtime/handles.inline.hpp"
61 #include "runtime/interfaceSupport.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/signature.hpp"
65 #include "runtime/threadCritical.hpp"
66 #include "runtime/vframe.hpp"
67 #include "runtime/vframeArray.hpp"
68 #include "runtime/vframe_hp.hpp"
69 #include "utilities/copy.hpp"
70 #include "utilities/preserveException.hpp"
71 #if defined AD_MD_HPP
72 # include AD_MD_HPP
73 #elif defined TARGET_ARCH_MODEL_x86_32
74 # include "adfiles/ad_x86_32.hpp"
75 #elif defined TARGET_ARCH_MODEL_x86_64
76 # include "adfiles/ad_x86_64.hpp"
77 #elif defined TARGET_ARCH_MODEL_sparc
78 # include "adfiles/ad_sparc.hpp"
79 #elif defined TARGET_ARCH_MODEL_zero
80 # include "adfiles/ad_zero.hpp"
81 #elif defined TARGET_ARCH_MODEL_ppc_64
82 # include "adfiles/ad_ppc_64.hpp"
83 #endif
84
85
86 // For debugging purposes:
87 // To force FullGCALot inside a runtime function, add the following two lines
88 //
89 // Universe::release_fullgc_alot_dummy();
90 // MarkSweep::invoke(0, "Debugging");
91 //
92 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
93
94
95
96
97 // Compiled code entry points
98 address OptoRuntime::_new_instance_Java = NULL;
99 address OptoRuntime::_new_array_Java = NULL;
100 address OptoRuntime::_new_array_nozero_Java = NULL;
101 address OptoRuntime::_multianewarray2_Java = NULL;
102 address OptoRuntime::_multianewarray3_Java = NULL;
103 address OptoRuntime::_multianewarray4_Java = NULL;
104 address OptoRuntime::_multianewarray5_Java = NULL;
105 address OptoRuntime::_multianewarrayN_Java = NULL;
106 address OptoRuntime::_g1_wb_pre_Java = NULL;
107 address OptoRuntime::_g1_wb_post_Java = NULL;
108 address OptoRuntime::_vtable_must_compile_Java = NULL;
109 address OptoRuntime::_complete_monitor_locking_Java = NULL;
110 address OptoRuntime::_rethrow_Java = NULL;
111
112 address OptoRuntime::_slow_arraycopy_Java = NULL;
113 address OptoRuntime::_register_finalizer_Java = NULL;
114
115 # ifdef ENABLE_ZAP_DEAD_LOCALS
116 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
117 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
118 # endif
119
120 ExceptionBlob* OptoRuntime::_exception_blob;
121
122 // This should be called in an assertion at the start of OptoRuntime routines
123 // which are entered from compiled code (all of them)
124 #ifdef ASSERT
125 static bool check_compiled_frame(JavaThread* thread) {
126 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
127 RegisterMap map(thread, false);
128 frame caller = thread->last_frame().sender(&map);
129 assert(caller.is_compiled_frame(), "not being called from compiled like code");
130 return true;
131 }
132 #endif // ASSERT
133
134
135 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
136 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \
137 if (var == NULL) { return false; }
138
139 bool OptoRuntime::generate(ciEnv* env) {
140
141 generate_exception_blob();
142
143 // Note: tls: Means fetching the return oop out of the thread-local storage
144 //
145 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
146 // -------------------------------------------------------------------------------------------------------------------------------
147 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
148 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
149 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false);
150 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
151 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
152 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
153 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
154 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false);
155 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
156 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
157 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false);
158 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
159
160 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
161 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
162
163 # ifdef ENABLE_ZAP_DEAD_LOCALS
164 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
165 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
166 # endif
167 return true;
168 }
169
170 #undef gen
171
172
173 // Helper method to do generation of RunTimeStub's
174 address OptoRuntime::generate_stub( ciEnv* env,
175 TypeFunc_generator gen, address C_function,
176 const char *name, int is_fancy_jump,
177 bool pass_tls,
178 bool save_argument_registers,
179 bool return_pc ) {
180 ResourceMark rm;
181 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
182 return C.stub_entry_point();
183 }
184
185 const char* OptoRuntime::stub_name(address entry) {
186 #ifndef PRODUCT
187 CodeBlob* cb = CodeCache::find_blob(entry);
188 RuntimeStub* rs =(RuntimeStub *)cb;
189 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
190 return rs->name();
191 #else
192 // Fast implementation for product mode (maybe it should be inlined too)
193 return "runtime stub";
194 #endif
195 }
196
197
198 //=============================================================================
199 // Opto compiler runtime routines
200 //=============================================================================
201
202
203 //=============================allocation======================================
204 // We failed the fast-path allocation. Now we need to do a scavenge or GC
205 // and try allocation again.
206
207 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
208 // After any safepoint, just before going back to compiled code,
209 // we inform the GC that we will be doing initializing writes to
210 // this object in the future without emitting card-marks, so
211 // GC may take any compensating steps.
212 // NOTE: Keep this code consistent with GraphKit::store_barrier.
213
214 oop new_obj = thread->vm_result();
215 if (new_obj == NULL) return;
216
217 assert(Universe::heap()->can_elide_tlab_store_barriers(),
218 "compiler must check this first");
219 // GC may decide to give back a safer copy of new_obj.
220 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
221 thread->set_vm_result(new_obj);
222 }
223
224 // object allocation
225 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))
226 JRT_BLOCK;
227 #ifndef PRODUCT
228 SharedRuntime::_new_instance_ctr++; // new instance requires GC
229 #endif
230 assert(check_compiled_frame(thread), "incorrect caller");
231
232 // These checks are cheap to make and support reflective allocation.
233 int lh = klass->layout_helper();
234 if (Klass::layout_helper_needs_slow_path(lh) || !InstanceKlass::cast(klass)->is_initialized()) {
235 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
236 klass->check_valid_for_instantiation(false, THREAD);
237 if (!HAS_PENDING_EXCEPTION) {
238 InstanceKlass::cast(klass)->initialize(THREAD);
239 }
240 }
241
242 if (!HAS_PENDING_EXCEPTION) {
243 // Scavenge and allocate an instance.
244 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
245 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
246 thread->set_vm_result(result);
247
248 // Pass oops back through thread local storage. Our apparent type to Java
249 // is that we return an oop, but we can block on exit from this routine and
250 // a GC can trash the oop in C's return register. The generated stub will
251 // fetch the oop from TLS after any possible GC.
252 }
253
254 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
255 JRT_BLOCK_END;
256
257 if (GraphKit::use_ReduceInitialCardMarks()) {
258 // inform GC that we won't do card marks for initializing writes.
259 new_store_pre_barrier(thread);
260 }
261 JRT_END
262
263
264 // array allocation
265 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))
266 JRT_BLOCK;
267 #ifndef PRODUCT
268 SharedRuntime::_new_array_ctr++; // new array requires GC
269 #endif
270 assert(check_compiled_frame(thread), "incorrect caller");
271
272 // Scavenge and allocate an instance.
273 oop result;
274
275 if (array_type->oop_is_typeArray()) {
276 // The oopFactory likes to work with the element type.
277 // (We could bypass the oopFactory, since it doesn't add much value.)
278 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
279 result = oopFactory::new_typeArray(elem_type, len, THREAD);
280 } else {
281 // Although the oopFactory likes to work with the elem_type,
282 // the compiler prefers the array_type, since it must already have
283 // that latter value in hand for the fast path.
284 Handle holder(THREAD, array_type->klass_holder()); // keep the array klass alive
285 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
286 result = oopFactory::new_objArray(elem_type, len, THREAD);
287 }
288
289 // Pass oops back through thread local storage. Our apparent type to Java
290 // is that we return an oop, but we can block on exit from this routine and
291 // a GC can trash the oop in C's return register. The generated stub will
292 // fetch the oop from TLS after any possible GC.
293 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
294 thread->set_vm_result(result);
295 JRT_BLOCK_END;
296
297 if (GraphKit::use_ReduceInitialCardMarks()) {
298 // inform GC that we won't do card marks for initializing writes.
299 new_store_pre_barrier(thread);
300 }
301 JRT_END
302
303 // array allocation without zeroing
304 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))
305 JRT_BLOCK;
306 #ifndef PRODUCT
307 SharedRuntime::_new_array_ctr++; // new array requires GC
308 #endif
309 assert(check_compiled_frame(thread), "incorrect caller");
310
311 // Scavenge and allocate an instance.
312 oop result;
313
314 assert(array_type->oop_is_typeArray(), "should be called only for type array");
315 // The oopFactory likes to work with the element type.
316 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
317 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
318
319 // Pass oops back through thread local storage. Our apparent type to Java
320 // is that we return an oop, but we can block on exit from this routine and
321 // a GC can trash the oop in C's return register. The generated stub will
322 // fetch the oop from TLS after any possible GC.
323 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
324 thread->set_vm_result(result);
325 JRT_BLOCK_END;
326
327 if (GraphKit::use_ReduceInitialCardMarks()) {
328 // inform GC that we won't do card marks for initializing writes.
329 new_store_pre_barrier(thread);
330 }
331
332 oop result = thread->vm_result();
333 if ((len > 0) && (result != NULL) &&
334 is_deoptimized_caller_frame(thread)) {
335 // Zero array here if the caller is deoptimized.
336 int size = ((typeArrayOop)result)->object_size();
337 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
338 const size_t hs = arrayOopDesc::header_size(elem_type);
339 // Align to next 8 bytes to avoid trashing arrays's length.
340 const size_t aligned_hs = align_object_offset(hs);
341 HeapWord* obj = (HeapWord*)result;
342 if (aligned_hs > hs) {
343 Copy::zero_to_words(obj+hs, aligned_hs-hs);
344 }
345 // Optimized zeroing.
346 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
347 }
348
349 JRT_END
350
351 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
352
353 // multianewarray for 2 dimensions
354 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))
355 #ifndef PRODUCT
356 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
357 #endif
358 assert(check_compiled_frame(thread), "incorrect caller");
359 assert(elem_type->is_klass(), "not a class");
360 jint dims[2];
361 dims[0] = len1;
362 dims[1] = len2;
363 Handle holder(THREAD, elem_type->klass_holder()); // keep the klass alive
364 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
365 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
366 thread->set_vm_result(obj);
367 JRT_END
368
369 // multianewarray for 3 dimensions
370 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))
371 #ifndef PRODUCT
372 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
373 #endif
374 assert(check_compiled_frame(thread), "incorrect caller");
375 assert(elem_type->is_klass(), "not a class");
376 jint dims[3];
377 dims[0] = len1;
378 dims[1] = len2;
379 dims[2] = len3;
380 Handle holder(THREAD, elem_type->klass_holder()); // keep the klass alive
381 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
382 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
383 thread->set_vm_result(obj);
384 JRT_END
385
386 // multianewarray for 4 dimensions
387 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
388 #ifndef PRODUCT
389 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
390 #endif
391 assert(check_compiled_frame(thread), "incorrect caller");
392 assert(elem_type->is_klass(), "not a class");
393 jint dims[4];
394 dims[0] = len1;
395 dims[1] = len2;
396 dims[2] = len3;
397 dims[3] = len4;
398 Handle holder(THREAD, elem_type->klass_holder()); // keep the klass alive
399 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
400 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
401 thread->set_vm_result(obj);
402 JRT_END
403
404 // multianewarray for 5 dimensions
405 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
406 #ifndef PRODUCT
407 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
408 #endif
409 assert(check_compiled_frame(thread), "incorrect caller");
410 assert(elem_type->is_klass(), "not a class");
411 jint dims[5];
412 dims[0] = len1;
413 dims[1] = len2;
414 dims[2] = len3;
415 dims[3] = len4;
416 dims[4] = len5;
417 Handle holder(THREAD, elem_type->klass_holder()); // keep the klass alive
418 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
419 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
420 thread->set_vm_result(obj);
421 JRT_END
422
423 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))
424 assert(check_compiled_frame(thread), "incorrect caller");
425 assert(elem_type->is_klass(), "not a class");
426 assert(oop(dims)->is_typeArray(), "not an array");
427
428 ResourceMark rm;
429 jint len = dims->length();
430 assert(len > 0, "Dimensions array should contain data");
431 jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
432 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
433 Copy::conjoint_jints_atomic(j_dims, c_dims, len);
434
435 Handle holder(THREAD, elem_type->klass_holder()); // keep the klass alive
436 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
437 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
438 thread->set_vm_result(obj);
439 JRT_END
440
441
442 const TypeFunc *OptoRuntime::new_instance_Type() {
443 // create input type (domain)
444 const Type **fields = TypeTuple::fields(1);
445 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
446 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
447
448 // create result type (range)
449 fields = TypeTuple::fields(1);
450 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
451
452 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
453
454 return TypeFunc::make(domain, range);
455 }
456
457
458 const TypeFunc *OptoRuntime::athrow_Type() {
459 // create input type (domain)
460 const Type **fields = TypeTuple::fields(1);
461 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
462 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
463
464 // create result type (range)
465 fields = TypeTuple::fields(0);
466
467 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
468
469 return TypeFunc::make(domain, range);
470 }
471
472
473 const TypeFunc *OptoRuntime::new_array_Type() {
474 // create input type (domain)
475 const Type **fields = TypeTuple::fields(2);
476 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
477 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
478 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
479
480 // create result type (range)
481 fields = TypeTuple::fields(1);
482 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
483
484 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
485
486 return TypeFunc::make(domain, range);
487 }
488
489 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
490 // create input type (domain)
491 const int nargs = ndim + 1;
492 const Type **fields = TypeTuple::fields(nargs);
493 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
494 for( int i = 1; i < nargs; i++ )
495 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
496 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
497
498 // create result type (range)
499 fields = TypeTuple::fields(1);
500 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
501 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
502
503 return TypeFunc::make(domain, range);
504 }
505
506 const TypeFunc *OptoRuntime::multianewarray2_Type() {
507 return multianewarray_Type(2);
508 }
509
510 const TypeFunc *OptoRuntime::multianewarray3_Type() {
511 return multianewarray_Type(3);
512 }
513
514 const TypeFunc *OptoRuntime::multianewarray4_Type() {
515 return multianewarray_Type(4);
516 }
517
518 const TypeFunc *OptoRuntime::multianewarray5_Type() {
519 return multianewarray_Type(5);
520 }
521
522 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
523 // create input type (domain)
524 const Type **fields = TypeTuple::fields(2);
525 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
526 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes
527 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
528
529 // create result type (range)
530 fields = TypeTuple::fields(1);
531 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
532 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
533
534 return TypeFunc::make(domain, range);
535 }
536
537 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
538 const Type **fields = TypeTuple::fields(2);
539 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
540 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
541 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
542
543 // create result type (range)
544 fields = TypeTuple::fields(0);
545 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
546
547 return TypeFunc::make(domain, range);
548 }
549
550 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
551
552 const Type **fields = TypeTuple::fields(2);
553 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
554 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
555 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
556
557 // create result type (range)
558 fields = TypeTuple::fields(0);
559 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
560
561 return TypeFunc::make(domain, range);
562 }
563
564 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
565 // create input type (domain)
566 const Type **fields = TypeTuple::fields(1);
567 // Symbol* name of class to be loaded
568 fields[TypeFunc::Parms+0] = TypeInt::INT;
569 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
570
571 // create result type (range)
572 fields = TypeTuple::fields(0);
573 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
574
575 return TypeFunc::make(domain, range);
576 }
577
578 # ifdef ENABLE_ZAP_DEAD_LOCALS
579 // Type used for stub generation for zap_dead_locals.
580 // No inputs or outputs
581 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
582 // create input type (domain)
583 const Type **fields = TypeTuple::fields(0);
584 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
585
586 // create result type (range)
587 fields = TypeTuple::fields(0);
588 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
589
590 return TypeFunc::make(domain,range);
591 }
592 # endif
593
594
595 //-----------------------------------------------------------------------------
596 // Monitor Handling
597 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
598 // create input type (domain)
599 const Type **fields = TypeTuple::fields(2);
600 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
601 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
602 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
603
604 // create result type (range)
605 fields = TypeTuple::fields(0);
606
607 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
608
609 return TypeFunc::make(domain,range);
610 }
611
612
613 //-----------------------------------------------------------------------------
614 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
615 // create input type (domain)
616 const Type **fields = TypeTuple::fields(2);
617 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
618 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
619 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
620
621 // create result type (range)
622 fields = TypeTuple::fields(0);
623
624 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
625
626 return TypeFunc::make(domain,range);
627 }
628
629 const TypeFunc* OptoRuntime::flush_windows_Type() {
630 // create input type (domain)
631 const Type** fields = TypeTuple::fields(1);
632 fields[TypeFunc::Parms+0] = NULL; // void
633 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
634
635 // create result type
636 fields = TypeTuple::fields(1);
637 fields[TypeFunc::Parms+0] = NULL; // void
638 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
639
640 return TypeFunc::make(domain, range);
641 }
642
643 const TypeFunc* OptoRuntime::l2f_Type() {
644 // create input type (domain)
645 const Type **fields = TypeTuple::fields(2);
646 fields[TypeFunc::Parms+0] = TypeLong::LONG;
647 fields[TypeFunc::Parms+1] = Type::HALF;
648 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
649
650 // create result type (range)
651 fields = TypeTuple::fields(1);
652 fields[TypeFunc::Parms+0] = Type::FLOAT;
653 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
654
655 return TypeFunc::make(domain, range);
656 }
657
658 const TypeFunc* OptoRuntime::modf_Type() {
659 const Type **fields = TypeTuple::fields(2);
660 fields[TypeFunc::Parms+0] = Type::FLOAT;
661 fields[TypeFunc::Parms+1] = Type::FLOAT;
662 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
663
664 // create result type (range)
665 fields = TypeTuple::fields(1);
666 fields[TypeFunc::Parms+0] = Type::FLOAT;
667
668 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
669
670 return TypeFunc::make(domain, range);
671 }
672
673 const TypeFunc *OptoRuntime::Math_D_D_Type() {
674 // create input type (domain)
675 const Type **fields = TypeTuple::fields(2);
676 // Symbol* name of class to be loaded
677 fields[TypeFunc::Parms+0] = Type::DOUBLE;
678 fields[TypeFunc::Parms+1] = Type::HALF;
679 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
680
681 // create result type (range)
682 fields = TypeTuple::fields(2);
683 fields[TypeFunc::Parms+0] = Type::DOUBLE;
684 fields[TypeFunc::Parms+1] = Type::HALF;
685 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
686
687 return TypeFunc::make(domain, range);
688 }
689
690 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
691 const Type **fields = TypeTuple::fields(4);
692 fields[TypeFunc::Parms+0] = Type::DOUBLE;
693 fields[TypeFunc::Parms+1] = Type::HALF;
694 fields[TypeFunc::Parms+2] = Type::DOUBLE;
695 fields[TypeFunc::Parms+3] = Type::HALF;
696 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
697
698 // create result type (range)
699 fields = TypeTuple::fields(2);
700 fields[TypeFunc::Parms+0] = Type::DOUBLE;
701 fields[TypeFunc::Parms+1] = Type::HALF;
702 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
703
704 return TypeFunc::make(domain, range);
705 }
706
707 //-------------- currentTimeMillis, currentTimeNanos, etc
708
709 const TypeFunc* OptoRuntime::void_long_Type() {
710 // create input type (domain)
711 const Type **fields = TypeTuple::fields(0);
712 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
713
714 // create result type (range)
715 fields = TypeTuple::fields(2);
716 fields[TypeFunc::Parms+0] = TypeLong::LONG;
717 fields[TypeFunc::Parms+1] = Type::HALF;
718 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
719
720 return TypeFunc::make(domain, range);
721 }
722
723 // arraycopy stub variations:
724 enum ArrayCopyType {
725 ac_fast, // void(ptr, ptr, size_t)
726 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
727 ac_slow, // void(ptr, int, ptr, int, int)
728 ac_generic // int(ptr, int, ptr, int, int)
729 };
730
731 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
732 // create input type (domain)
733 int num_args = (act == ac_fast ? 3 : 5);
734 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
735 int argcnt = num_args;
736 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
737 const Type** fields = TypeTuple::fields(argcnt);
738 int argp = TypeFunc::Parms;
739 fields[argp++] = TypePtr::NOTNULL; // src
740 if (num_size_args == 0) {
741 fields[argp++] = TypeInt::INT; // src_pos
742 }
743 fields[argp++] = TypePtr::NOTNULL; // dest
744 if (num_size_args == 0) {
745 fields[argp++] = TypeInt::INT; // dest_pos
746 fields[argp++] = TypeInt::INT; // length
747 }
748 while (num_size_args-- > 0) {
749 fields[argp++] = TypeX_X; // size in whatevers (size_t)
750 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
751 }
752 if (act == ac_checkcast) {
753 fields[argp++] = TypePtr::NOTNULL; // super_klass
754 }
755 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
756 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
757
758 // create result type if needed
759 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
760 fields = TypeTuple::fields(1);
761 if (retcnt == 0)
762 fields[TypeFunc::Parms+0] = NULL; // void
763 else
764 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
765 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
766 return TypeFunc::make(domain, range);
767 }
768
769 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
770 // This signature is simple: Two base pointers and a size_t.
771 return make_arraycopy_Type(ac_fast);
772 }
773
774 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
775 // An extension of fast_arraycopy_Type which adds type checking.
776 return make_arraycopy_Type(ac_checkcast);
777 }
778
779 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
780 // This signature is exactly the same as System.arraycopy.
781 // There are no intptr_t (int/long) arguments.
782 return make_arraycopy_Type(ac_slow);
783 }
784
785 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
786 // This signature is like System.arraycopy, except that it returns status.
787 return make_arraycopy_Type(ac_generic);
788 }
789
790
791 const TypeFunc* OptoRuntime::array_fill_Type() {
792 const Type** fields;
793 int argp = TypeFunc::Parms;
794 if (CCallingConventionRequiresIntsAsLongs) {
795 // create input type (domain): pointer, int, size_t
796 fields = TypeTuple::fields(3 LP64_ONLY( + 2));
797 fields[argp++] = TypePtr::NOTNULL;
798 fields[argp++] = TypeLong::LONG;
799 fields[argp++] = Type::HALF;
800 } else {
801 // create input type (domain): pointer, int, size_t
802 fields = TypeTuple::fields(3 LP64_ONLY( + 1));
803 fields[argp++] = TypePtr::NOTNULL;
804 fields[argp++] = TypeInt::INT;
805 }
806 fields[argp++] = TypeX_X; // size in whatevers (size_t)
807 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
808 const TypeTuple *domain = TypeTuple::make(argp, fields);
809
810 // create result type
811 fields = TypeTuple::fields(1);
812 fields[TypeFunc::Parms+0] = NULL; // void
813 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
814
815 return TypeFunc::make(domain, range);
816 }
817
818 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
819 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
820 // create input type (domain)
821 int num_args = 3;
822 if (Matcher::pass_original_key_for_aes()) {
823 num_args = 4;
824 }
825 int argcnt = num_args;
826 const Type** fields = TypeTuple::fields(argcnt);
827 int argp = TypeFunc::Parms;
828 fields[argp++] = TypePtr::NOTNULL; // src
829 fields[argp++] = TypePtr::NOTNULL; // dest
830 fields[argp++] = TypePtr::NOTNULL; // k array
831 if (Matcher::pass_original_key_for_aes()) {
832 fields[argp++] = TypePtr::NOTNULL; // original k array
833 }
834 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
835 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
836
837 // no result type needed
838 fields = TypeTuple::fields(1);
839 fields[TypeFunc::Parms+0] = NULL; // void
840 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
841 return TypeFunc::make(domain, range);
842 }
843
844 /**
845 * int updateBytesCRC32(int crc, byte* b, int len)
846 */
847 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
848 // create input type (domain)
849 int num_args = 3;
850 int argcnt = num_args;
851 if (CCallingConventionRequiresIntsAsLongs) {
852 argcnt += 2;
853 }
854 const Type** fields = TypeTuple::fields(argcnt);
855 int argp = TypeFunc::Parms;
856 if (CCallingConventionRequiresIntsAsLongs) {
857 fields[argp++] = TypeLong::LONG; // crc
858 fields[argp++] = Type::HALF;
859 fields[argp++] = TypePtr::NOTNULL; // src
860 fields[argp++] = TypeLong::LONG; // len
861 fields[argp++] = Type::HALF;
862 } else {
863 fields[argp++] = TypeInt::INT; // crc
864 fields[argp++] = TypePtr::NOTNULL; // src
865 fields[argp++] = TypeInt::INT; // len
866 }
867 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
868 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
869
870 // result type needed
871 fields = TypeTuple::fields(1);
872 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
873 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
874 return TypeFunc::make(domain, range);
875 }
876
877 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int
878 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
879 // create input type (domain)
880 int num_args = 5;
881 if (Matcher::pass_original_key_for_aes()) {
882 num_args = 6;
883 }
884 int argcnt = num_args;
885 const Type** fields = TypeTuple::fields(argcnt);
886 int argp = TypeFunc::Parms;
887 fields[argp++] = TypePtr::NOTNULL; // src
888 fields[argp++] = TypePtr::NOTNULL; // dest
889 fields[argp++] = TypePtr::NOTNULL; // k array
890 fields[argp++] = TypePtr::NOTNULL; // r array
891 fields[argp++] = TypeInt::INT; // src len
892 if (Matcher::pass_original_key_for_aes()) {
893 fields[argp++] = TypePtr::NOTNULL; // original k array
894 }
895 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
896 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
897
898 // returning cipher len (int)
899 fields = TypeTuple::fields(1);
900 fields[TypeFunc::Parms+0] = TypeInt::INT;
901 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
902 return TypeFunc::make(domain, range);
903 }
904
905 /*
906 * void implCompress(byte[] buf, int ofs)
907 */
908 const TypeFunc* OptoRuntime::sha_implCompress_Type() {
909 // create input type (domain)
910 int num_args = 2;
911 int argcnt = num_args;
912 const Type** fields = TypeTuple::fields(argcnt);
913 int argp = TypeFunc::Parms;
914 fields[argp++] = TypePtr::NOTNULL; // buf
915 fields[argp++] = TypePtr::NOTNULL; // state
916 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
917 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
918
919 // no result type needed
920 fields = TypeTuple::fields(1);
921 fields[TypeFunc::Parms+0] = NULL; // void
922 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
923 return TypeFunc::make(domain, range);
924 }
925
926 /*
927 * int implCompressMultiBlock(byte[] b, int ofs, int limit)
928 */
929 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() {
930 // create input type (domain)
931 int num_args = 4;
932 int argcnt = num_args;
933 if(CCallingConventionRequiresIntsAsLongs) {
934 argcnt += 2;
935 }
936 const Type** fields = TypeTuple::fields(argcnt);
937 int argp = TypeFunc::Parms;
938 if(CCallingConventionRequiresIntsAsLongs) {
939 fields[argp++] = TypePtr::NOTNULL; // buf
940 fields[argp++] = TypePtr::NOTNULL; // state
941 fields[argp++] = TypeLong::LONG; // ofs
942 fields[argp++] = Type::HALF;
943 fields[argp++] = TypeLong::LONG; // limit
944 fields[argp++] = Type::HALF;
945 } else {
946 fields[argp++] = TypePtr::NOTNULL; // buf
947 fields[argp++] = TypePtr::NOTNULL; // state
948 fields[argp++] = TypeInt::INT; // ofs
949 fields[argp++] = TypeInt::INT; // limit
950 }
951 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
952 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
953
954 // returning ofs (int)
955 fields = TypeTuple::fields(1);
956 fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs
957 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
958 return TypeFunc::make(domain, range);
959 }
960
961 const TypeFunc* OptoRuntime::multiplyToLen_Type() {
962 // create input type (domain)
963 int num_args = 6;
964 int argcnt = num_args;
965 const Type** fields = TypeTuple::fields(argcnt);
966 int argp = TypeFunc::Parms;
967 fields[argp++] = TypePtr::NOTNULL; // x
968 fields[argp++] = TypeInt::INT; // xlen
969 fields[argp++] = TypePtr::NOTNULL; // y
970 fields[argp++] = TypeInt::INT; // ylen
971 fields[argp++] = TypePtr::NOTNULL; // z
972 fields[argp++] = TypeInt::INT; // zlen
973 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
974 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
975
976 // no result type needed
977 fields = TypeTuple::fields(1);
978 fields[TypeFunc::Parms+0] = NULL;
979 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
980 return TypeFunc::make(domain, range);
981 }
982
983 const TypeFunc* OptoRuntime::squareToLen_Type() {
984 // create input type (domain)
985 int num_args = 4;
986 int argcnt = num_args;
987 const Type** fields = TypeTuple::fields(argcnt);
988 int argp = TypeFunc::Parms;
989 fields[argp++] = TypePtr::NOTNULL; // x
990 fields[argp++] = TypeInt::INT; // len
991 fields[argp++] = TypePtr::NOTNULL; // z
992 fields[argp++] = TypeInt::INT; // zlen
993 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
994 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
995
996 // no result type needed
997 fields = TypeTuple::fields(1);
998 fields[TypeFunc::Parms+0] = NULL;
999 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
1000 return TypeFunc::make(domain, range);
1001 }
1002
1003 // for mulAdd calls, 2 pointers and 3 ints, returning int
1004 const TypeFunc* OptoRuntime::mulAdd_Type() {
1005 // create input type (domain)
1006 int num_args = 5;
1007 int argcnt = num_args;
1008 const Type** fields = TypeTuple::fields(argcnt);
1009 int argp = TypeFunc::Parms;
1010 fields[argp++] = TypePtr::NOTNULL; // out
1011 fields[argp++] = TypePtr::NOTNULL; // in
1012 fields[argp++] = TypeInt::INT; // offset
1013 fields[argp++] = TypeInt::INT; // len
1014 fields[argp++] = TypeInt::INT; // k
1015 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
1016 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
1017
1018 // returning carry (int)
1019 fields = TypeTuple::fields(1);
1020 fields[TypeFunc::Parms+0] = TypeInt::INT;
1021 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
1022 return TypeFunc::make(domain, range);
1023 }
1024
1025 const TypeFunc* OptoRuntime::montgomeryMultiply_Type() {
1026 // create input type (domain)
1027 int num_args = 7;
1028 int argcnt = num_args;
1029 if (CCallingConventionRequiresIntsAsLongs) {
1030 argcnt++; // additional placeholder
1031 }
1032 const Type** fields = TypeTuple::fields(argcnt);
1033 int argp = TypeFunc::Parms;
1034 fields[argp++] = TypePtr::NOTNULL; // a
1035 fields[argp++] = TypePtr::NOTNULL; // b
1036 fields[argp++] = TypePtr::NOTNULL; // n
1037 if (CCallingConventionRequiresIntsAsLongs) {
1038 fields[argp++] = TypeLong::LONG; // len
1039 fields[argp++] = TypeLong::HALF; // placeholder
1040 } else {
1041 fields[argp++] = TypeInt::INT; // len
1042 }
1043 fields[argp++] = TypeLong::LONG; // inv
1044 fields[argp++] = Type::HALF;
1045 fields[argp++] = TypePtr::NOTNULL; // result
1046 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
1047 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
1048
1049 // result type needed
1050 fields = TypeTuple::fields(1);
1051 fields[TypeFunc::Parms+0] = TypePtr::NOTNULL;
1052
1053 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
1054 return TypeFunc::make(domain, range);
1055 }
1056
1057 const TypeFunc* OptoRuntime::montgomerySquare_Type() {
1058 // create input type (domain)
1059 int num_args = 6;
1060 int argcnt = num_args;
1061 if (CCallingConventionRequiresIntsAsLongs) {
1062 argcnt++; // additional placeholder
1063 }
1064 const Type** fields = TypeTuple::fields(argcnt);
1065 int argp = TypeFunc::Parms;
1066 fields[argp++] = TypePtr::NOTNULL; // a
1067 fields[argp++] = TypePtr::NOTNULL; // n
1068 if (CCallingConventionRequiresIntsAsLongs) {
1069 fields[argp++] = TypeLong::LONG; // len
1070 fields[argp++] = TypeLong::HALF; // placeholder
1071 } else {
1072 fields[argp++] = TypeInt::INT; // len
1073 }
1074 fields[argp++] = TypeLong::LONG; // inv
1075 fields[argp++] = Type::HALF;
1076 fields[argp++] = TypePtr::NOTNULL; // result
1077 assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
1078 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
1079
1080 // result type needed
1081 fields = TypeTuple::fields(1);
1082 fields[TypeFunc::Parms+0] = TypePtr::NOTNULL;
1083
1084 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
1085 return TypeFunc::make(domain, range);
1086 }
1087
1088
1089 //------------- Interpreter state access for on stack replacement
1090 const TypeFunc* OptoRuntime::osr_end_Type() {
1091 // create input type (domain)
1092 const Type **fields = TypeTuple::fields(1);
1093 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
1094 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
1095
1096 // create result type
1097 fields = TypeTuple::fields(1);
1098 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
1099 fields[TypeFunc::Parms+0] = NULL; // void
1100 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
1101 return TypeFunc::make(domain, range);
1102 }
1103
1104 //-------------- methodData update helpers
1105
1106 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
1107 // create input type (domain)
1108 const Type **fields = TypeTuple::fields(2);
1109 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
1110 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
1111 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
1112
1113 // create result type
1114 fields = TypeTuple::fields(1);
1115 fields[TypeFunc::Parms+0] = NULL; // void
1116 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
1117 return TypeFunc::make(domain,range);
1118 }
1119
1120 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
1121 if (receiver == NULL) return;
1122 Klass* receiver_klass = receiver->klass();
1123
1124 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
1125 int empty_row = -1; // free row, if any is encountered
1126
1127 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
1128 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
1129 // if (vc->receiver(row) == receiver_klass)
1130 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
1131 intptr_t row_recv = *(mdp + receiver_off);
1132 if (row_recv == (intptr_t) receiver_klass) {
1133 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
1134 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
1135 *(mdp + count_off) += DataLayout::counter_increment;
1136 return;
1137 } else if (row_recv == 0) {
1138 // else if (vc->receiver(row) == NULL)
1139 empty_row = (int) row;
1140 }
1141 }
1142
1143 if (empty_row != -1) {
1144 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
1145 // vc->set_receiver(empty_row, receiver_klass);
1146 *(mdp + receiver_off) = (intptr_t) receiver_klass;
1147 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
1148 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
1149 *(mdp + count_off) = DataLayout::counter_increment;
1150 } else {
1151 // Receiver did not match any saved receiver and there is no empty row for it.
1152 // Increment total counter to indicate polymorphic case.
1153 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
1154 *count_p += DataLayout::counter_increment;
1155 }
1156 JRT_END
1157
1158 //-------------------------------------------------------------------------------------
1159 // register policy
1160
1161 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
1162 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
1163 switch (register_save_policy[reg]) {
1164 case 'C': return false; //SOC
1165 case 'E': return true ; //SOE
1166 case 'N': return false; //NS
1167 case 'A': return false; //AS
1168 }
1169 ShouldNotReachHere();
1170 return false;
1171 }
1172
1173 //-----------------------------------------------------------------------
1174 // Exceptions
1175 //
1176
1177 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
1178
1179 // The method is an entry that is always called by a C++ method not
1180 // directly from compiled code. Compiled code will call the C++ method following.
1181 // We can't allow async exception to be installed during exception processing.
1182 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
1183
1184 // Do not confuse exception_oop with pending_exception. The exception_oop
1185 // is only used to pass arguments into the method. Not for general
1186 // exception handling. DO NOT CHANGE IT to use pending_exception, since
1187 // the runtime stubs checks this on exit.
1188 assert(thread->exception_oop() != NULL, "exception oop is found");
1189 address handler_address = NULL;
1190
1191 Handle exception(thread, thread->exception_oop());
1192 address pc = thread->exception_pc();
1193
1194 // Clear out the exception oop and pc since looking up an
1195 // exception handler can cause class loading, which might throw an
1196 // exception and those fields are expected to be clear during
1197 // normal bytecode execution.
1198 thread->clear_exception_oop_and_pc();
1199
1200 if (TraceExceptions) {
1201 trace_exception(exception(), pc, "");
1202 }
1203
1204 // for AbortVMOnException flag
1205 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
1206
1207 #ifdef ASSERT
1208 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1209 // should throw an exception here
1210 ShouldNotReachHere();
1211 }
1212 #endif
1213
1214 // new exception handling: this method is entered only from adapters
1215 // exceptions from compiled java methods are handled in compiled code
1216 // using rethrow node
1217
1218 nm = CodeCache::find_nmethod(pc);
1219 assert(nm != NULL, "No NMethod found");
1220 if (nm->is_native_method()) {
1221 fatal("Native method should not have path to exception handling");
1222 } else {
1223 // we are switching to old paradigm: search for exception handler in caller_frame
1224 // instead in exception handler of caller_frame.sender()
1225
1226 if (JvmtiExport::can_post_on_exceptions()) {
1227 // "Full-speed catching" is not necessary here,
1228 // since we're notifying the VM on every catch.
1229 // Force deoptimization and the rest of the lookup
1230 // will be fine.
1231 deoptimize_caller_frame(thread);
1232 }
1233
1234 // Check the stack guard pages. If enabled, look for handler in this frame;
1235 // otherwise, forcibly unwind the frame.
1236 //
1237 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
1238 bool force_unwind = !thread->reguard_stack();
1239 bool deopting = false;
1240 if (nm->is_deopt_pc(pc)) {
1241 deopting = true;
1242 RegisterMap map(thread, false);
1243 frame deoptee = thread->last_frame().sender(&map);
1244 assert(deoptee.is_deoptimized_frame(), "must be deopted");
1245 // Adjust the pc back to the original throwing pc
1246 pc = deoptee.pc();
1247 }
1248
1249 // If we are forcing an unwind because of stack overflow then deopt is
1250 // irrelevant since we are throwing the frame away anyway.
1251
1252 if (deopting && !force_unwind) {
1253 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1254 } else {
1255
1256 handler_address =
1257 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
1258
1259 if (handler_address == NULL) {
1260 bool recursive_exception = false;
1261 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true, recursive_exception);
1262 assert (handler_address != NULL, "must have compiled handler");
1263 // Update the exception cache only when the unwind was not forced
1264 // and there didn't happen another exception during the computation of the
1265 // compiled exception handler. Checking for exception oop equality is not
1266 // sufficient because some exceptions are pre-allocated and reused.
1267 if (!force_unwind && !recursive_exception) {
1268 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1269 }
1270 } else {
1271 #ifdef ASSERT
1272 bool recursive_exception = false;
1273 address computed_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true, recursive_exception);
1274 assert(recursive_exception || (handler_address == computed_address), err_msg("Handler address inconsistency: " PTR_FORMAT " != " PTR_FORMAT,
1275 p2i(handler_address), p2i(computed_address)));
1276 #endif
1277 }
1278 }
1279
1280 thread->set_exception_pc(pc);
1281 thread->set_exception_handler_pc(handler_address);
1282
1283 // Check if the exception PC is a MethodHandle call site.
1284 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1285 }
1286
1287 // Restore correct return pc. Was saved above.
1288 thread->set_exception_oop(exception());
1289 return handler_address;
1290
1291 JRT_END
1292
1293 // We are entering here from exception_blob
1294 // If there is a compiled exception handler in this method, we will continue there;
1295 // otherwise we will unwind the stack and continue at the caller of top frame method
1296 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1297 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1298 // we looked up the handler for has been deoptimized in the meantime. If it has been
1299 // we must not use the handler and instead return the deopt blob.
1300 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1301 //
1302 // We are in Java not VM and in debug mode we have a NoHandleMark
1303 //
1304 #ifndef PRODUCT
1305 SharedRuntime::_find_handler_ctr++; // find exception handler
1306 #endif
1307 debug_only(NoHandleMark __hm;)
1308 nmethod* nm = NULL;
1309 address handler_address = NULL;
1310 {
1311 // Enter the VM
1312
1313 ResetNoHandleMark rnhm;
1314 handler_address = handle_exception_C_helper(thread, nm);
1315 }
1316
1317 // Back in java: Use no oops, DON'T safepoint
1318
1319 // Now check to see if the handler we are returning is in a now
1320 // deoptimized frame
1321
1322 if (nm != NULL) {
1323 RegisterMap map(thread, false);
1324 frame caller = thread->last_frame().sender(&map);
1325 #ifdef ASSERT
1326 assert(caller.is_compiled_frame(), "must be");
1327 #endif // ASSERT
1328 if (caller.is_deoptimized_frame()) {
1329 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1330 }
1331 }
1332 return handler_address;
1333 }
1334
1335 //------------------------------rethrow----------------------------------------
1336 // We get here after compiled code has executed a 'RethrowNode'. The callee
1337 // is either throwing or rethrowing an exception. The callee-save registers
1338 // have been restored, synchronized objects have been unlocked and the callee
1339 // stack frame has been removed. The return address was passed in.
1340 // Exception oop is passed as the 1st argument. This routine is then called
1341 // from the stub. On exit, we know where to jump in the caller's code.
1342 // After this C code exits, the stub will pop his frame and end in a jump
1343 // (instead of a return). We enter the caller's default handler.
1344 //
1345 // This must be JRT_LEAF:
1346 // - caller will not change its state as we cannot block on exit,
1347 // therefore raw_exception_handler_for_return_address is all it takes
1348 // to handle deoptimized blobs
1349 //
1350 // However, there needs to be a safepoint check in the middle! So compiled
1351 // safepoints are completely watertight.
1352 //
1353 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1354 //
1355 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1356 //
1357 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1358 #ifndef PRODUCT
1359 SharedRuntime::_rethrow_ctr++; // count rethrows
1360 #endif
1361 assert (exception != NULL, "should have thrown a NULLPointerException");
1362 #ifdef ASSERT
1363 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1364 // should throw an exception here
1365 ShouldNotReachHere();
1366 }
1367 #endif
1368
1369 thread->set_vm_result(exception);
1370 // Frame not compiled (handles deoptimization blob)
1371 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1372 }
1373
1374
1375 const TypeFunc *OptoRuntime::rethrow_Type() {
1376 // create input type (domain)
1377 const Type **fields = TypeTuple::fields(1);
1378 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1379 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1380
1381 // create result type (range)
1382 fields = TypeTuple::fields(1);
1383 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1384 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1385
1386 return TypeFunc::make(domain, range);
1387 }
1388
1389
1390 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1391 // Deoptimize the caller before continuing, as the compiled
1392 // exception handler table may not be valid.
1393 if (!StressCompiledExceptionHandlers && doit) {
1394 deoptimize_caller_frame(thread);
1395 }
1396 }
1397
1398 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1399 // Called from within the owner thread, so no need for safepoint
1400 RegisterMap reg_map(thread);
1401 frame stub_frame = thread->last_frame();
1402 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1403 frame caller_frame = stub_frame.sender(®_map);
1404
1405 // Deoptimize the caller frame.
1406 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1407 }
1408
1409
1410 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1411 // Called from within the owner thread, so no need for safepoint
1412 RegisterMap reg_map(thread);
1413 frame stub_frame = thread->last_frame();
1414 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1415 frame caller_frame = stub_frame.sender(®_map);
1416 return caller_frame.is_deoptimized_frame();
1417 }
1418
1419
1420 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1421 // create input type (domain)
1422 const Type **fields = TypeTuple::fields(1);
1423 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1424 // // The JavaThread* is passed to each routine as the last argument
1425 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1426 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1427
1428 // create result type (range)
1429 fields = TypeTuple::fields(0);
1430
1431 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1432
1433 return TypeFunc::make(domain,range);
1434 }
1435
1436
1437 //-----------------------------------------------------------------------------
1438 // Dtrace support. entry and exit probes have the same signature
1439 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1440 // create input type (domain)
1441 const Type **fields = TypeTuple::fields(2);
1442 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1443 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering
1444 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1445
1446 // create result type (range)
1447 fields = TypeTuple::fields(0);
1448
1449 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1450
1451 return TypeFunc::make(domain,range);
1452 }
1453
1454 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1455 // create input type (domain)
1456 const Type **fields = TypeTuple::fields(2);
1457 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1458 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1459
1460 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1461
1462 // create result type (range)
1463 fields = TypeTuple::fields(0);
1464
1465 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1466
1467 return TypeFunc::make(domain,range);
1468 }
1469
1470
1471 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1472 assert(obj->is_oop(), "must be a valid oop");
1473 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1474 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1475 JRT_END
1476
1477 //-----------------------------------------------------------------------------
1478
1479 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1480
1481 //
1482 // dump the collected NamedCounters.
1483 //
1484 void OptoRuntime::print_named_counters() {
1485 int total_lock_count = 0;
1486 int eliminated_lock_count = 0;
1487
1488 NamedCounter* c = _named_counters;
1489 while (c) {
1490 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1491 int count = c->count();
1492 if (count > 0) {
1493 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1494 if (Verbose) {
1495 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1496 }
1497 total_lock_count += count;
1498 if (eliminated) {
1499 eliminated_lock_count += count;
1500 }
1501 }
1502 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1503 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1504 if (blc->nonzero()) {
1505 tty->print_cr("%s", c->name());
1506 blc->print_on(tty);
1507 }
1508 #if INCLUDE_RTM_OPT
1509 } else if (c->tag() == NamedCounter::RTMLockingCounter) {
1510 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters();
1511 if (rlc->nonzero()) {
1512 tty->print_cr("%s", c->name());
1513 rlc->print_on(tty);
1514 }
1515 #endif
1516 }
1517 c = c->next();
1518 }
1519 if (total_lock_count > 0) {
1520 tty->print_cr("dynamic locks: %d", total_lock_count);
1521 if (eliminated_lock_count) {
1522 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1523 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1524 }
1525 }
1526 }
1527
1528 //
1529 // Allocate a new NamedCounter. The JVMState is used to generate the
1530 // name which consists of method@line for the inlining tree.
1531 //
1532
1533 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1534 int max_depth = youngest_jvms->depth();
1535
1536 // Visit scopes from youngest to oldest.
1537 bool first = true;
1538 stringStream st;
1539 for (int depth = max_depth; depth >= 1; depth--) {
1540 JVMState* jvms = youngest_jvms->of_depth(depth);
1541 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1542 if (!first) {
1543 st.print(" ");
1544 } else {
1545 first = false;
1546 }
1547 int bci = jvms->bci();
1548 if (bci < 0) bci = 0;
1549 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1550 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1551 }
1552 NamedCounter* c;
1553 if (tag == NamedCounter::BiasedLockingCounter) {
1554 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1555 } else if (tag == NamedCounter::RTMLockingCounter) {
1556 c = new RTMLockingNamedCounter(strdup(st.as_string()));
1557 } else {
1558 c = new NamedCounter(strdup(st.as_string()), tag);
1559 }
1560
1561 // atomically add the new counter to the head of the list. We only
1562 // add counters so this is safe.
1563 NamedCounter* head;
1564 do {
1565 c->set_next(NULL);
1566 head = _named_counters;
1567 c->set_next(head);
1568 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1569 return c;
1570 }
1571
1572 //-----------------------------------------------------------------------------
1573 // Non-product code
1574 #ifndef PRODUCT
1575
1576 int trace_exception_counter = 0;
1577 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1578 ttyLocker ttyl;
1579 trace_exception_counter++;
1580 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1581 exception_oop->print_value();
1582 tty->print(" in ");
1583 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1584 if (blob->is_nmethod()) {
1585 nmethod* nm = blob->as_nmethod_or_null();
1586 nm->method()->print_value();
1587 } else if (blob->is_runtime_stub()) {
1588 tty->print("<runtime-stub>");
1589 } else {
1590 tty->print("<unknown>");
1591 }
1592 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc));
1593 tty->print_cr("]");
1594 }
1595
1596 #endif // PRODUCT
1597
1598
1599 # ifdef ENABLE_ZAP_DEAD_LOCALS
1600 // Called from call sites in compiled code with oop maps (actually safepoints)
1601 // Zaps dead locals in first java frame.
1602 // Is entry because may need to lock to generate oop maps
1603 // Currently, only used for compiler frames, but someday may be used
1604 // for interpreter frames, too.
1605
1606 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1607
1608 // avoid pointers to member funcs with these helpers
1609 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1610 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1611
1612
1613 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1614 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1615 assert(JavaThread::current() == thread, "is this needed?");
1616
1617 if ( !ZapDeadCompiledLocals ) return;
1618
1619 bool skip = false;
1620
1621 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1622 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1623 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1624 warning("starting zapping after skipping");
1625
1626 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1627 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1628 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1629 warning("about to zap last zap");
1630
1631 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1632
1633 if ( skip ) return;
1634
1635 // find java frame and zap it
1636
1637 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1638 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1639 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1640 return;
1641 }
1642 }
1643 warning("no frame found to zap in zap_dead_Java_locals_C");
1644 }
1645
1646 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1647 zap_dead_java_or_native_locals(thread, is_java_frame);
1648 JRT_END
1649
1650 // The following does not work because for one thing, the
1651 // thread state is wrong; it expects java, but it is native.
1652 // Also, the invariants in a native stub are different and
1653 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1654 // in there.
1655 // So for now, we do not zap in native stubs.
1656
1657 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1658 zap_dead_java_or_native_locals(thread, is_native_frame);
1659 JRT_END
1660
1661 # endif