1 /*
   2  * Copyright (c) 1998, 2015, 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         Handle original_exception(thread, exception());
1238         handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
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.
1243         if (!force_unwind && original_exception() == exception()) {
1244           nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
1245         }
1246       } else {
1247         assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
1248       }
1249     }
1250 
1251     thread->set_exception_pc(pc);
1252     thread->set_exception_handler_pc(handler_address);
1253 
1254     // Check if the exception PC is a MethodHandle call site.
1255     thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
1256   }
1257 
1258   // Restore correct return pc.  Was saved above.
1259   thread->set_exception_oop(exception());
1260   return handler_address;
1261 
1262 JRT_END
1263 
1264 // We are entering here from exception_blob
1265 // If there is a compiled exception handler in this method, we will continue there;
1266 // otherwise we will unwind the stack and continue at the caller of top frame method
1267 // Note we enter without the usual JRT wrapper. We will call a helper routine that
1268 // will do the normal VM entry. We do it this way so that we can see if the nmethod
1269 // we looked up the handler for has been deoptimized in the meantime. If it has been
1270 // we must not use the handler and instead return the deopt blob.
1271 address OptoRuntime::handle_exception_C(JavaThread* thread) {
1272 //
1273 // We are in Java not VM and in debug mode we have a NoHandleMark
1274 //
1275 #ifndef PRODUCT
1276   SharedRuntime::_find_handler_ctr++;          // find exception handler
1277 #endif
1278   debug_only(NoHandleMark __hm;)
1279   nmethod* nm = NULL;
1280   address handler_address = NULL;
1281   {
1282     // Enter the VM
1283 
1284     ResetNoHandleMark rnhm;
1285     handler_address = handle_exception_C_helper(thread, nm);
1286   }
1287 
1288   // Back in java: Use no oops, DON'T safepoint
1289 
1290   // Now check to see if the handler we are returning is in a now
1291   // deoptimized frame
1292 
1293   if (nm != NULL) {
1294     RegisterMap map(thread, false);
1295     frame caller = thread->last_frame().sender(&map);
1296 #ifdef ASSERT
1297     assert(caller.is_compiled_frame(), "must be");
1298 #endif // ASSERT
1299     if (caller.is_deoptimized_frame()) {
1300       handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
1301     }
1302   }
1303   return handler_address;
1304 }
1305 
1306 //------------------------------rethrow----------------------------------------
1307 // We get here after compiled code has executed a 'RethrowNode'.  The callee
1308 // is either throwing or rethrowing an exception.  The callee-save registers
1309 // have been restored, synchronized objects have been unlocked and the callee
1310 // stack frame has been removed.  The return address was passed in.
1311 // Exception oop is passed as the 1st argument.  This routine is then called
1312 // from the stub.  On exit, we know where to jump in the caller's code.
1313 // After this C code exits, the stub will pop his frame and end in a jump
1314 // (instead of a return).  We enter the caller's default handler.
1315 //
1316 // This must be JRT_LEAF:
1317 //     - caller will not change its state as we cannot block on exit,
1318 //       therefore raw_exception_handler_for_return_address is all it takes
1319 //       to handle deoptimized blobs
1320 //
1321 // However, there needs to be a safepoint check in the middle!  So compiled
1322 // safepoints are completely watertight.
1323 //
1324 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1325 //
1326 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1327 //
1328 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1329 #ifndef PRODUCT
1330   SharedRuntime::_rethrow_ctr++;               // count rethrows
1331 #endif
1332   assert (exception != NULL, "should have thrown a NULLPointerException");
1333 #ifdef ASSERT
1334   if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1335     // should throw an exception here
1336     ShouldNotReachHere();
1337   }
1338 #endif
1339 
1340   thread->set_vm_result(exception);
1341   // Frame not compiled (handles deoptimization blob)
1342   return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1343 }
1344 
1345 
1346 const TypeFunc *OptoRuntime::rethrow_Type() {
1347   // create input type (domain)
1348   const Type **fields = TypeTuple::fields(1);
1349   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1350   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1351 
1352   // create result type (range)
1353   fields = TypeTuple::fields(1);
1354   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1355   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1356 
1357   return TypeFunc::make(domain, range);
1358 }
1359 
1360 
1361 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1362   // Deoptimize the caller before continuing, as the compiled
1363   // exception handler table may not be valid.
1364   if (!StressCompiledExceptionHandlers && doit) {
1365     deoptimize_caller_frame(thread);
1366   }
1367 }
1368 
1369 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
1370   // Called from within the owner thread, so no need for safepoint
1371   RegisterMap reg_map(thread);
1372   frame stub_frame = thread->last_frame();
1373   assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1374   frame caller_frame = stub_frame.sender(&reg_map);
1375 
1376   // Deoptimize the caller frame.
1377   Deoptimization::deoptimize_frame(thread, caller_frame.id());
1378 }
1379 
1380 
1381 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
1382   // Called from within the owner thread, so no need for safepoint
1383   RegisterMap reg_map(thread);
1384   frame stub_frame = thread->last_frame();
1385   assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1386   frame caller_frame = stub_frame.sender(&reg_map);
1387   return caller_frame.is_deoptimized_frame();
1388 }
1389 
1390 
1391 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1392   // create input type (domain)
1393   const Type **fields = TypeTuple::fields(1);
1394   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // oop;          Receiver
1395   // // The JavaThread* is passed to each routine as the last argument
1396   // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL;  // JavaThread *; Executing thread
1397   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1398 
1399   // create result type (range)
1400   fields = TypeTuple::fields(0);
1401 
1402   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1403 
1404   return TypeFunc::make(domain,range);
1405 }
1406 
1407 
1408 //-----------------------------------------------------------------------------
1409 // Dtrace support.  entry and exit probes have the same signature
1410 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1411   // create input type (domain)
1412   const Type **fields = TypeTuple::fields(2);
1413   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1414   fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM;  // Method*;    Method we are entering
1415   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1416 
1417   // create result type (range)
1418   fields = TypeTuple::fields(0);
1419 
1420   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1421 
1422   return TypeFunc::make(domain,range);
1423 }
1424 
1425 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1426   // create input type (domain)
1427   const Type **fields = TypeTuple::fields(2);
1428   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1429   fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;  // oop;    newly allocated object
1430 
1431   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1432 
1433   // create result type (range)
1434   fields = TypeTuple::fields(0);
1435 
1436   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1437 
1438   return TypeFunc::make(domain,range);
1439 }
1440 
1441 
1442 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1443   assert(obj->is_oop(), "must be a valid oop");
1444   assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
1445   InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
1446 JRT_END
1447 
1448 //-----------------------------------------------------------------------------
1449 
1450 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1451 
1452 //
1453 // dump the collected NamedCounters.
1454 //
1455 void OptoRuntime::print_named_counters() {
1456   int total_lock_count = 0;
1457   int eliminated_lock_count = 0;
1458 
1459   NamedCounter* c = _named_counters;
1460   while (c) {
1461     if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1462       int count = c->count();
1463       if (count > 0) {
1464         bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1465         if (Verbose) {
1466           tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1467         }
1468         total_lock_count += count;
1469         if (eliminated) {
1470           eliminated_lock_count += count;
1471         }
1472       }
1473     } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1474       BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1475       if (blc->nonzero()) {
1476         tty->print_cr("%s", c->name());
1477         blc->print_on(tty);
1478       }
1479 #if INCLUDE_RTM_OPT
1480     } else if (c->tag() == NamedCounter::RTMLockingCounter) {
1481       RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters();
1482       if (rlc->nonzero()) {
1483         tty->print_cr("%s", c->name());
1484         rlc->print_on(tty);
1485       }
1486 #endif
1487     }
1488     c = c->next();
1489   }
1490   if (total_lock_count > 0) {
1491     tty->print_cr("dynamic locks: %d", total_lock_count);
1492     if (eliminated_lock_count) {
1493       tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1494                     (int)(eliminated_lock_count * 100.0 / total_lock_count));
1495     }
1496   }
1497 }
1498 
1499 //
1500 //  Allocate a new NamedCounter.  The JVMState is used to generate the
1501 //  name which consists of method@line for the inlining tree.
1502 //
1503 
1504 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1505   int max_depth = youngest_jvms->depth();
1506 
1507   // Visit scopes from youngest to oldest.
1508   bool first = true;
1509   stringStream st;
1510   for (int depth = max_depth; depth >= 1; depth--) {
1511     JVMState* jvms = youngest_jvms->of_depth(depth);
1512     ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1513     if (!first) {
1514       st.print(" ");
1515     } else {
1516       first = false;
1517     }
1518     int bci = jvms->bci();
1519     if (bci < 0) bci = 0;
1520     st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1521     // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1522   }
1523   NamedCounter* c;
1524   if (tag == NamedCounter::BiasedLockingCounter) {
1525     c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1526   } else if (tag == NamedCounter::RTMLockingCounter) {
1527     c = new RTMLockingNamedCounter(strdup(st.as_string()));
1528   } else {
1529     c = new NamedCounter(strdup(st.as_string()), tag);
1530   }
1531 
1532   // atomically add the new counter to the head of the list.  We only
1533   // add counters so this is safe.
1534   NamedCounter* head;
1535   do {
1536     c->set_next(NULL);
1537     head = _named_counters;
1538     c->set_next(head);
1539   } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1540   return c;
1541 }
1542 
1543 //-----------------------------------------------------------------------------
1544 // Non-product code
1545 #ifndef PRODUCT
1546 
1547 int trace_exception_counter = 0;
1548 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1549   ttyLocker ttyl;
1550   trace_exception_counter++;
1551   tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1552   exception_oop->print_value();
1553   tty->print(" in ");
1554   CodeBlob* blob = CodeCache::find_blob(exception_pc);
1555   if (blob->is_nmethod()) {
1556     nmethod* nm = blob->as_nmethod_or_null();
1557     nm->method()->print_value();
1558   } else if (blob->is_runtime_stub()) {
1559     tty->print("<runtime-stub>");
1560   } else {
1561     tty->print("<unknown>");
1562   }
1563   tty->print(" at " INTPTR_FORMAT,  p2i(exception_pc));
1564   tty->print_cr("]");
1565 }
1566 
1567 #endif  // PRODUCT
1568 
1569 
1570 # ifdef ENABLE_ZAP_DEAD_LOCALS
1571 // Called from call sites in compiled code with oop maps (actually safepoints)
1572 // Zaps dead locals in first java frame.
1573 // Is entry because may need to lock to generate oop maps
1574 // Currently, only used for compiler frames, but someday may be used
1575 // for interpreter frames, too.
1576 
1577 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1578 
1579 // avoid pointers to member funcs with these helpers
1580 static bool is_java_frame(  frame* f) { return f->is_java_frame();   }
1581 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1582 
1583 
1584 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1585                                                 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1586   assert(JavaThread::current() == thread, "is this needed?");
1587 
1588   if ( !ZapDeadCompiledLocals )  return;
1589 
1590   bool skip = false;
1591 
1592        if ( ZapDeadCompiledLocalsFirst  ==  0  ) ; // nothing special
1593   else if ( ZapDeadCompiledLocalsFirst  >  ZapDeadCompiledLocals_count )  skip = true;
1594   else if ( ZapDeadCompiledLocalsFirst  == ZapDeadCompiledLocals_count )
1595     warning("starting zapping after skipping");
1596 
1597        if ( ZapDeadCompiledLocalsLast  ==  -1  ) ; // nothing special
1598   else if ( ZapDeadCompiledLocalsLast  <   ZapDeadCompiledLocals_count )  skip = true;
1599   else if ( ZapDeadCompiledLocalsLast  ==  ZapDeadCompiledLocals_count )
1600     warning("about to zap last zap");
1601 
1602   ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1603 
1604   if ( skip )  return;
1605 
1606   // find java frame and zap it
1607 
1608   for (StackFrameStream sfs(thread);  !sfs.is_done();  sfs.next()) {
1609     if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1610       sfs.current()->zap_dead_locals(thread, sfs.register_map());
1611       return;
1612     }
1613   }
1614   warning("no frame found to zap in zap_dead_Java_locals_C");
1615 }
1616 
1617 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1618   zap_dead_java_or_native_locals(thread, is_java_frame);
1619 JRT_END
1620 
1621 // The following does not work because for one thing, the
1622 // thread state is wrong; it expects java, but it is native.
1623 // Also, the invariants in a native stub are different and
1624 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1625 // in there.
1626 // So for now, we do not zap in native stubs.
1627 
1628 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1629   zap_dead_java_or_native_locals(thread, is_native_frame);
1630 JRT_END
1631 
1632 # endif