1 /* 2 * Copyright (c) 1998, 2018, 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 const Type** fields = TypeTuple::fields(argcnt); 852 int argp = TypeFunc::Parms; 853 fields[argp++] = TypeInt::INT; // crc 854 fields[argp++] = TypePtr::NOTNULL; // src 855 fields[argp++] = TypeInt::INT; // len 856 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 857 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 858 859 // result type needed 860 fields = TypeTuple::fields(1); 861 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 862 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 863 return TypeFunc::make(domain, range); 864 } 865 866 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int 867 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 868 // create input type (domain) 869 int num_args = 5; 870 if (Matcher::pass_original_key_for_aes()) { 871 num_args = 6; 872 } 873 int argcnt = num_args; 874 const Type** fields = TypeTuple::fields(argcnt); 875 int argp = TypeFunc::Parms; 876 fields[argp++] = TypePtr::NOTNULL; // src 877 fields[argp++] = TypePtr::NOTNULL; // dest 878 fields[argp++] = TypePtr::NOTNULL; // k array 879 fields[argp++] = TypePtr::NOTNULL; // r array 880 fields[argp++] = TypeInt::INT; // src len 881 if (Matcher::pass_original_key_for_aes()) { 882 fields[argp++] = TypePtr::NOTNULL; // original k array 883 } 884 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 885 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 886 887 // returning cipher len (int) 888 fields = TypeTuple::fields(1); 889 fields[TypeFunc::Parms+0] = TypeInt::INT; 890 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 891 return TypeFunc::make(domain, range); 892 } 893 894 /* 895 * void implCompress(byte[] buf, int ofs) 896 */ 897 const TypeFunc* OptoRuntime::sha_implCompress_Type() { 898 // create input type (domain) 899 int num_args = 2; 900 int argcnt = num_args; 901 const Type** fields = TypeTuple::fields(argcnt); 902 int argp = TypeFunc::Parms; 903 fields[argp++] = TypePtr::NOTNULL; // buf 904 fields[argp++] = TypePtr::NOTNULL; // state 905 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 906 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 907 908 // no result type needed 909 fields = TypeTuple::fields(1); 910 fields[TypeFunc::Parms+0] = NULL; // void 911 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 912 return TypeFunc::make(domain, range); 913 } 914 915 /* 916 * int implCompressMultiBlock(byte[] b, int ofs, int limit) 917 */ 918 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() { 919 // create input type (domain) 920 int num_args = 4; 921 int argcnt = num_args; 922 const Type** fields = TypeTuple::fields(argcnt); 923 int argp = TypeFunc::Parms; 924 fields[argp++] = TypePtr::NOTNULL; // buf 925 fields[argp++] = TypePtr::NOTNULL; // state 926 fields[argp++] = TypeInt::INT; // ofs 927 fields[argp++] = TypeInt::INT; // limit 928 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 929 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 930 931 // returning ofs (int) 932 fields = TypeTuple::fields(1); 933 fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs 934 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 935 return TypeFunc::make(domain, range); 936 } 937 938 const TypeFunc* OptoRuntime::multiplyToLen_Type() { 939 // create input type (domain) 940 int num_args = 6; 941 int argcnt = num_args; 942 const Type** fields = TypeTuple::fields(argcnt); 943 int argp = TypeFunc::Parms; 944 fields[argp++] = TypePtr::NOTNULL; // x 945 fields[argp++] = TypeInt::INT; // xlen 946 fields[argp++] = TypePtr::NOTNULL; // y 947 fields[argp++] = TypeInt::INT; // ylen 948 fields[argp++] = TypePtr::NOTNULL; // z 949 fields[argp++] = TypeInt::INT; // zlen 950 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 951 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 952 953 // no result type needed 954 fields = TypeTuple::fields(1); 955 fields[TypeFunc::Parms+0] = NULL; 956 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 957 return TypeFunc::make(domain, range); 958 } 959 960 const TypeFunc* OptoRuntime::squareToLen_Type() { 961 // create input type (domain) 962 int num_args = 4; 963 int argcnt = num_args; 964 const Type** fields = TypeTuple::fields(argcnt); 965 int argp = TypeFunc::Parms; 966 fields[argp++] = TypePtr::NOTNULL; // x 967 fields[argp++] = TypeInt::INT; // len 968 fields[argp++] = TypePtr::NOTNULL; // z 969 fields[argp++] = TypeInt::INT; // zlen 970 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 971 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 972 973 // no result type needed 974 fields = TypeTuple::fields(1); 975 fields[TypeFunc::Parms+0] = NULL; 976 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 977 return TypeFunc::make(domain, range); 978 } 979 980 // for mulAdd calls, 2 pointers and 3 ints, returning int 981 const TypeFunc* OptoRuntime::mulAdd_Type() { 982 // create input type (domain) 983 int num_args = 5; 984 int argcnt = num_args; 985 const Type** fields = TypeTuple::fields(argcnt); 986 int argp = TypeFunc::Parms; 987 fields[argp++] = TypePtr::NOTNULL; // out 988 fields[argp++] = TypePtr::NOTNULL; // in 989 fields[argp++] = TypeInt::INT; // offset 990 fields[argp++] = TypeInt::INT; // len 991 fields[argp++] = TypeInt::INT; // k 992 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 993 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 994 995 // returning carry (int) 996 fields = TypeTuple::fields(1); 997 fields[TypeFunc::Parms+0] = TypeInt::INT; 998 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 999 return TypeFunc::make(domain, range); 1000 } 1001 1002 const TypeFunc* OptoRuntime::montgomeryMultiply_Type() { 1003 // create input type (domain) 1004 int num_args = 7; 1005 int argcnt = num_args; 1006 if (CCallingConventionRequiresIntsAsLongs) { 1007 argcnt++; // additional placeholder 1008 } 1009 const Type** fields = TypeTuple::fields(argcnt); 1010 int argp = TypeFunc::Parms; 1011 fields[argp++] = TypePtr::NOTNULL; // a 1012 fields[argp++] = TypePtr::NOTNULL; // b 1013 fields[argp++] = TypePtr::NOTNULL; // n 1014 if (CCallingConventionRequiresIntsAsLongs) { 1015 fields[argp++] = TypeLong::LONG; // len 1016 fields[argp++] = TypeLong::HALF; // placeholder 1017 } else { 1018 fields[argp++] = TypeInt::INT; // len 1019 } 1020 fields[argp++] = TypeLong::LONG; // inv 1021 fields[argp++] = Type::HALF; 1022 fields[argp++] = TypePtr::NOTNULL; // result 1023 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 1024 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 1025 1026 // result type needed 1027 fields = TypeTuple::fields(1); 1028 fields[TypeFunc::Parms+0] = TypePtr::NOTNULL; 1029 1030 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 1031 return TypeFunc::make(domain, range); 1032 } 1033 1034 const TypeFunc* OptoRuntime::montgomerySquare_Type() { 1035 // create input type (domain) 1036 int num_args = 6; 1037 int argcnt = num_args; 1038 if (CCallingConventionRequiresIntsAsLongs) { 1039 argcnt++; // additional placeholder 1040 } 1041 const Type** fields = TypeTuple::fields(argcnt); 1042 int argp = TypeFunc::Parms; 1043 fields[argp++] = TypePtr::NOTNULL; // a 1044 fields[argp++] = TypePtr::NOTNULL; // n 1045 if (CCallingConventionRequiresIntsAsLongs) { 1046 fields[argp++] = TypeLong::LONG; // len 1047 fields[argp++] = TypeLong::HALF; // placeholder 1048 } else { 1049 fields[argp++] = TypeInt::INT; // len 1050 } 1051 fields[argp++] = TypeLong::LONG; // inv 1052 fields[argp++] = Type::HALF; 1053 fields[argp++] = TypePtr::NOTNULL; // result 1054 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 1055 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 1056 1057 // result type needed 1058 fields = TypeTuple::fields(1); 1059 fields[TypeFunc::Parms+0] = TypePtr::NOTNULL; 1060 1061 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 1062 return TypeFunc::make(domain, range); 1063 } 1064 1065 1066 //------------- Interpreter state access for on stack replacement 1067 const TypeFunc* OptoRuntime::osr_end_Type() { 1068 // create input type (domain) 1069 const Type **fields = TypeTuple::fields(1); 1070 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 1071 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 1072 1073 // create result type 1074 fields = TypeTuple::fields(1); 1075 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 1076 fields[TypeFunc::Parms+0] = NULL; // void 1077 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 1078 return TypeFunc::make(domain, range); 1079 } 1080 1081 //-------------- methodData update helpers 1082 1083 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 1084 // create input type (domain) 1085 const Type **fields = TypeTuple::fields(2); 1086 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 1087 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 1088 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 1089 1090 // create result type 1091 fields = TypeTuple::fields(1); 1092 fields[TypeFunc::Parms+0] = NULL; // void 1093 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 1094 return TypeFunc::make(domain,range); 1095 } 1096 1097 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 1098 if (receiver == NULL) return; 1099 Klass* receiver_klass = receiver->klass(); 1100 1101 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 1102 int empty_row = -1; // free row, if any is encountered 1103 1104 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 1105 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 1106 // if (vc->receiver(row) == receiver_klass) 1107 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 1108 intptr_t row_recv = *(mdp + receiver_off); 1109 if (row_recv == (intptr_t) receiver_klass) { 1110 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 1111 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 1112 *(mdp + count_off) += DataLayout::counter_increment; 1113 return; 1114 } else if (row_recv == 0) { 1115 // else if (vc->receiver(row) == NULL) 1116 empty_row = (int) row; 1117 } 1118 } 1119 1120 if (empty_row != -1) { 1121 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 1122 // vc->set_receiver(empty_row, receiver_klass); 1123 *(mdp + receiver_off) = (intptr_t) receiver_klass; 1124 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 1125 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 1126 *(mdp + count_off) = DataLayout::counter_increment; 1127 } else { 1128 // Receiver did not match any saved receiver and there is no empty row for it. 1129 // Increment total counter to indicate polymorphic case. 1130 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 1131 *count_p += DataLayout::counter_increment; 1132 } 1133 JRT_END 1134 1135 //------------------------------------------------------------------------------------- 1136 // register policy 1137 1138 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 1139 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 1140 switch (register_save_policy[reg]) { 1141 case 'C': return false; //SOC 1142 case 'E': return true ; //SOE 1143 case 'N': return false; //NS 1144 case 'A': return false; //AS 1145 } 1146 ShouldNotReachHere(); 1147 return false; 1148 } 1149 1150 //----------------------------------------------------------------------- 1151 // Exceptions 1152 // 1153 1154 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 1155 1156 // The method is an entry that is always called by a C++ method not 1157 // directly from compiled code. Compiled code will call the C++ method following. 1158 // We can't allow async exception to be installed during exception processing. 1159 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 1160 1161 // Do not confuse exception_oop with pending_exception. The exception_oop 1162 // is only used to pass arguments into the method. Not for general 1163 // exception handling. DO NOT CHANGE IT to use pending_exception, since 1164 // the runtime stubs checks this on exit. 1165 assert(thread->exception_oop() != NULL, "exception oop is found"); 1166 address handler_address = NULL; 1167 1168 Handle exception(thread, thread->exception_oop()); 1169 address pc = thread->exception_pc(); 1170 1171 // Clear out the exception oop and pc since looking up an 1172 // exception handler can cause class loading, which might throw an 1173 // exception and those fields are expected to be clear during 1174 // normal bytecode execution. 1175 thread->clear_exception_oop_and_pc(); 1176 1177 if (TraceExceptions) { 1178 trace_exception(exception(), pc, ""); 1179 } 1180 1181 // for AbortVMOnException flag 1182 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 1183 1184 #ifdef ASSERT 1185 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1186 // should throw an exception here 1187 ShouldNotReachHere(); 1188 } 1189 #endif 1190 1191 // new exception handling: this method is entered only from adapters 1192 // exceptions from compiled java methods are handled in compiled code 1193 // using rethrow node 1194 1195 nm = CodeCache::find_nmethod(pc); 1196 assert(nm != NULL, "No NMethod found"); 1197 if (nm->is_native_method()) { 1198 fatal("Native method should not have path to exception handling"); 1199 } else { 1200 // we are switching to old paradigm: search for exception handler in caller_frame 1201 // instead in exception handler of caller_frame.sender() 1202 1203 if (JvmtiExport::can_post_on_exceptions()) { 1204 // "Full-speed catching" is not necessary here, 1205 // since we're notifying the VM on every catch. 1206 // Force deoptimization and the rest of the lookup 1207 // will be fine. 1208 deoptimize_caller_frame(thread); 1209 } 1210 1211 // Check the stack guard pages. If enabled, look for handler in this frame; 1212 // otherwise, forcibly unwind the frame. 1213 // 1214 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1215 bool force_unwind = !thread->reguard_stack(); 1216 bool deopting = false; 1217 if (nm->is_deopt_pc(pc)) { 1218 deopting = true; 1219 RegisterMap map(thread, false); 1220 frame deoptee = thread->last_frame().sender(&map); 1221 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1222 // Adjust the pc back to the original throwing pc 1223 pc = deoptee.pc(); 1224 } 1225 1226 // If we are forcing an unwind because of stack overflow then deopt is 1227 // irrelevant since we are throwing the frame away anyway. 1228 1229 if (deopting && !force_unwind) { 1230 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1231 } else { 1232 1233 handler_address = 1234 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1235 1236 if (handler_address == NULL) { 1237 bool recursive_exception = false; 1238 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true, recursive_exception); 1239 assert (handler_address != NULL, "must have compiled handler"); 1240 // Update the exception cache only when the unwind was not forced 1241 // and there didn't happen another exception during the computation of the 1242 // compiled exception handler. Checking for exception oop equality is not 1243 // sufficient because some exceptions are pre-allocated and reused. 1244 if (!force_unwind && !recursive_exception) { 1245 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1246 } 1247 } else { 1248 #ifdef ASSERT 1249 bool recursive_exception = false; 1250 address computed_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true, recursive_exception); 1251 assert(recursive_exception || (handler_address == computed_address), err_msg("Handler address inconsistency: " PTR_FORMAT " != " PTR_FORMAT, 1252 p2i(handler_address), p2i(computed_address))); 1253 #endif 1254 } 1255 } 1256 1257 thread->set_exception_pc(pc); 1258 thread->set_exception_handler_pc(handler_address); 1259 1260 // Check if the exception PC is a MethodHandle call site. 1261 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1262 } 1263 1264 // Restore correct return pc. Was saved above. 1265 thread->set_exception_oop(exception()); 1266 return handler_address; 1267 1268 JRT_END 1269 1270 // We are entering here from exception_blob 1271 // If there is a compiled exception handler in this method, we will continue there; 1272 // otherwise we will unwind the stack and continue at the caller of top frame method 1273 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1274 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1275 // we looked up the handler for has been deoptimized in the meantime. If it has been 1276 // we must not use the handler and instead return the deopt blob. 1277 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1278 // 1279 // We are in Java not VM and in debug mode we have a NoHandleMark 1280 // 1281 #ifndef PRODUCT 1282 SharedRuntime::_find_handler_ctr++; // find exception handler 1283 #endif 1284 debug_only(NoHandleMark __hm;) 1285 nmethod* nm = NULL; 1286 address handler_address = NULL; 1287 { 1288 // Enter the VM 1289 1290 ResetNoHandleMark rnhm; 1291 handler_address = handle_exception_C_helper(thread, nm); 1292 } 1293 1294 // Back in java: Use no oops, DON'T safepoint 1295 1296 // Now check to see if the handler we are returning is in a now 1297 // deoptimized frame 1298 1299 if (nm != NULL) { 1300 RegisterMap map(thread, false); 1301 frame caller = thread->last_frame().sender(&map); 1302 #ifdef ASSERT 1303 assert(caller.is_compiled_frame(), "must be"); 1304 #endif // ASSERT 1305 if (caller.is_deoptimized_frame()) { 1306 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1307 } 1308 } 1309 return handler_address; 1310 } 1311 1312 //------------------------------rethrow---------------------------------------- 1313 // We get here after compiled code has executed a 'RethrowNode'. The callee 1314 // is either throwing or rethrowing an exception. The callee-save registers 1315 // have been restored, synchronized objects have been unlocked and the callee 1316 // stack frame has been removed. The return address was passed in. 1317 // Exception oop is passed as the 1st argument. This routine is then called 1318 // from the stub. On exit, we know where to jump in the caller's code. 1319 // After this C code exits, the stub will pop his frame and end in a jump 1320 // (instead of a return). We enter the caller's default handler. 1321 // 1322 // This must be JRT_LEAF: 1323 // - caller will not change its state as we cannot block on exit, 1324 // therefore raw_exception_handler_for_return_address is all it takes 1325 // to handle deoptimized blobs 1326 // 1327 // However, there needs to be a safepoint check in the middle! So compiled 1328 // safepoints are completely watertight. 1329 // 1330 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1331 // 1332 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1333 // 1334 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1335 #ifndef PRODUCT 1336 SharedRuntime::_rethrow_ctr++; // count rethrows 1337 #endif 1338 assert (exception != NULL, "should have thrown a NULLPointerException"); 1339 #ifdef ASSERT 1340 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1341 // should throw an exception here 1342 ShouldNotReachHere(); 1343 } 1344 #endif 1345 1346 thread->set_vm_result(exception); 1347 // Frame not compiled (handles deoptimization blob) 1348 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1349 } 1350 1351 1352 const TypeFunc *OptoRuntime::rethrow_Type() { 1353 // create input type (domain) 1354 const Type **fields = TypeTuple::fields(1); 1355 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1356 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1357 1358 // create result type (range) 1359 fields = TypeTuple::fields(1); 1360 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1361 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1362 1363 return TypeFunc::make(domain, range); 1364 } 1365 1366 1367 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1368 // Deoptimize the caller before continuing, as the compiled 1369 // exception handler table may not be valid. 1370 if (!StressCompiledExceptionHandlers && doit) { 1371 deoptimize_caller_frame(thread); 1372 } 1373 } 1374 1375 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1376 // Called from within the owner thread, so no need for safepoint 1377 RegisterMap reg_map(thread); 1378 frame stub_frame = thread->last_frame(); 1379 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1380 frame caller_frame = stub_frame.sender(®_map); 1381 1382 // Deoptimize the caller frame. 1383 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1384 } 1385 1386 1387 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1388 // Called from within the owner thread, so no need for safepoint 1389 RegisterMap reg_map(thread); 1390 frame stub_frame = thread->last_frame(); 1391 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1392 frame caller_frame = stub_frame.sender(®_map); 1393 return caller_frame.is_deoptimized_frame(); 1394 } 1395 1396 1397 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1398 // create input type (domain) 1399 const Type **fields = TypeTuple::fields(1); 1400 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1401 // // The JavaThread* is passed to each routine as the last argument 1402 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1403 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1404 1405 // create result type (range) 1406 fields = TypeTuple::fields(0); 1407 1408 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1409 1410 return TypeFunc::make(domain,range); 1411 } 1412 1413 1414 //----------------------------------------------------------------------------- 1415 // Dtrace support. entry and exit probes have the same signature 1416 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1417 // create input type (domain) 1418 const Type **fields = TypeTuple::fields(2); 1419 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1420 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1421 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1422 1423 // create result type (range) 1424 fields = TypeTuple::fields(0); 1425 1426 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1427 1428 return TypeFunc::make(domain,range); 1429 } 1430 1431 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1432 // create input type (domain) 1433 const Type **fields = TypeTuple::fields(2); 1434 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1435 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1436 1437 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1438 1439 // create result type (range) 1440 fields = TypeTuple::fields(0); 1441 1442 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1443 1444 return TypeFunc::make(domain,range); 1445 } 1446 1447 1448 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1449 assert(obj->is_oop(), "must be a valid oop"); 1450 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1451 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1452 JRT_END 1453 1454 //----------------------------------------------------------------------------- 1455 1456 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1457 1458 // 1459 // dump the collected NamedCounters. 1460 // 1461 void OptoRuntime::print_named_counters() { 1462 int total_lock_count = 0; 1463 int eliminated_lock_count = 0; 1464 1465 NamedCounter* c = _named_counters; 1466 while (c) { 1467 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1468 int count = c->count(); 1469 if (count > 0) { 1470 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1471 if (Verbose) { 1472 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1473 } 1474 total_lock_count += count; 1475 if (eliminated) { 1476 eliminated_lock_count += count; 1477 } 1478 } 1479 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1480 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1481 if (blc->nonzero()) { 1482 tty->print_cr("%s", c->name()); 1483 blc->print_on(tty); 1484 } 1485 #if INCLUDE_RTM_OPT 1486 } else if (c->tag() == NamedCounter::RTMLockingCounter) { 1487 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters(); 1488 if (rlc->nonzero()) { 1489 tty->print_cr("%s", c->name()); 1490 rlc->print_on(tty); 1491 } 1492 #endif 1493 } 1494 c = c->next(); 1495 } 1496 if (total_lock_count > 0) { 1497 tty->print_cr("dynamic locks: %d", total_lock_count); 1498 if (eliminated_lock_count) { 1499 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1500 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1501 } 1502 } 1503 } 1504 1505 // 1506 // Allocate a new NamedCounter. The JVMState is used to generate the 1507 // name which consists of method@line for the inlining tree. 1508 // 1509 1510 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1511 int max_depth = youngest_jvms->depth(); 1512 1513 // Visit scopes from youngest to oldest. 1514 bool first = true; 1515 stringStream st; 1516 for (int depth = max_depth; depth >= 1; depth--) { 1517 JVMState* jvms = youngest_jvms->of_depth(depth); 1518 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1519 if (!first) { 1520 st.print(" "); 1521 } else { 1522 first = false; 1523 } 1524 int bci = jvms->bci(); 1525 if (bci < 0) bci = 0; 1526 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1527 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1528 } 1529 NamedCounter* c; 1530 if (tag == NamedCounter::BiasedLockingCounter) { 1531 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1532 } else if (tag == NamedCounter::RTMLockingCounter) { 1533 c = new RTMLockingNamedCounter(strdup(st.as_string())); 1534 } else { 1535 c = new NamedCounter(strdup(st.as_string()), tag); 1536 } 1537 1538 // atomically add the new counter to the head of the list. We only 1539 // add counters so this is safe. 1540 NamedCounter* head; 1541 do { 1542 c->set_next(NULL); 1543 head = _named_counters; 1544 c->set_next(head); 1545 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1546 return c; 1547 } 1548 1549 //----------------------------------------------------------------------------- 1550 // Non-product code 1551 #ifndef PRODUCT 1552 1553 int trace_exception_counter = 0; 1554 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1555 ttyLocker ttyl; 1556 trace_exception_counter++; 1557 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1558 exception_oop->print_value(); 1559 tty->print(" in "); 1560 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1561 if (blob->is_nmethod()) { 1562 nmethod* nm = blob->as_nmethod_or_null(); 1563 nm->method()->print_value(); 1564 } else if (blob->is_runtime_stub()) { 1565 tty->print("<runtime-stub>"); 1566 } else { 1567 tty->print("<unknown>"); 1568 } 1569 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc)); 1570 tty->print_cr("]"); 1571 } 1572 1573 #endif // PRODUCT 1574 1575 1576 # ifdef ENABLE_ZAP_DEAD_LOCALS 1577 // Called from call sites in compiled code with oop maps (actually safepoints) 1578 // Zaps dead locals in first java frame. 1579 // Is entry because may need to lock to generate oop maps 1580 // Currently, only used for compiler frames, but someday may be used 1581 // for interpreter frames, too. 1582 1583 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1584 1585 // avoid pointers to member funcs with these helpers 1586 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1587 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1588 1589 1590 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1591 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1592 assert(JavaThread::current() == thread, "is this needed?"); 1593 1594 if ( !ZapDeadCompiledLocals ) return; 1595 1596 bool skip = false; 1597 1598 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1599 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1600 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1601 warning("starting zapping after skipping"); 1602 1603 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1604 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1605 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1606 warning("about to zap last zap"); 1607 1608 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1609 1610 if ( skip ) return; 1611 1612 // find java frame and zap it 1613 1614 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1615 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1616 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1617 return; 1618 } 1619 } 1620 warning("no frame found to zap in zap_dead_Java_locals_C"); 1621 } 1622 1623 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1624 zap_dead_java_or_native_locals(thread, is_java_frame); 1625 JRT_END 1626 1627 // The following does not work because for one thing, the 1628 // thread state is wrong; it expects java, but it is native. 1629 // Also, the invariants in a native stub are different and 1630 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1631 // in there. 1632 // So for now, we do not zap in native stubs. 1633 1634 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1635 zap_dead_java_or_native_locals(thread, is_native_frame); 1636 JRT_END 1637 1638 # endif