       1 /*
       2  * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
       3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       4  *
       5  * This code is free software; you can redistribute it and/or modify it
       6  * under the terms of the GNU General Public License version 2 only, as
       7  * published by the Free Software Foundation.
       8  *
       9  * This code is distributed in the hope that it will be useful, but WITHOUT
      10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      12  * version 2 for more details (a copy is included in the LICENSE file that
      13  * accompanied this code).
      14  *
      15  * You should have received a copy of the GNU General Public License version
      16  * 2 along with this work; if not, write to the Free Software Foundation,
      17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
      18  *
      19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
      20  * or visit www.oracle.com if you need additional information or have any
      21  * questions.
      22  *
      23  */
      24
      25 #include "precompiled.hpp"
      26 #include "classfile/systemDictionary.hpp"
      27 #include "classfile/vmSymbols.hpp"
      28 #include "code/codeCache.hpp"
      29 #include "code/compiledIC.hpp"
      30 #include "code/icBuffer.hpp"
      31 #include "code/nmethod.hpp"
      32 #include "code/pcDesc.hpp"
      33 #include "code/scopeDesc.hpp"
      34 #include "code/vtableStubs.hpp"
      35 #include "compiler/compileBroker.hpp"
      36 #include "compiler/compilerOracle.hpp"
      37 #include "compiler/oopMap.hpp"
      38 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
      39 #include "gc_implementation/g1/heapRegion.hpp"
      40 #include "gc_interface/collectedHeap.hpp"
      41 #include "interpreter/bytecode.hpp"
      42 #include "interpreter/interpreter.hpp"
      43 #include "interpreter/linkResolver.hpp"
      44 #include "memory/barrierSet.hpp"
      45 #include "memory/gcLocker.inline.hpp"
      46 #include "memory/oopFactory.hpp"
      47 #include "oops/objArrayKlass.hpp"
      48 #include "oops/oop.inline.hpp"
      49 #include "opto/ad.hpp"
      50 #include "opto/addnode.hpp"
      51 #include "opto/callnode.hpp"
      52 #include "opto/cfgnode.hpp"
      53 #include "opto/graphKit.hpp"
      54 #include "opto/machnode.hpp"
      55 #include "opto/matcher.hpp"
      56 #include "opto/memnode.hpp"
      57 #include "opto/mulnode.hpp"
      58 #include "opto/runtime.hpp"
      59 #include "opto/subnode.hpp"
      60 #include "runtime/atomic.inline.hpp"
      61 #include "runtime/fprofiler.hpp"
      62 #include "runtime/handles.inline.hpp"
      63 #include "runtime/interfaceSupport.hpp"
      64 #include "runtime/javaCalls.hpp"
      65 #include "runtime/sharedRuntime.hpp"
      66 #include "runtime/signature.hpp"
      67 #include "runtime/threadCritical.hpp"
      68 #include "runtime/vframe.hpp"
      69 #include "runtime/vframeArray.hpp"
      70 #include "runtime/vframe_hp.hpp"
      71 #include "utilities/copy.hpp"
      72 #include "utilities/preserveException.hpp"
      73
      74
      75 // For debugging purposes:
      76 //  To force FullGCALot inside a runtime function, add the following two lines
      77 //
      78 //  Universe::release_fullgc_alot_dummy();
      79 //  MarkSweep::invoke(0, "Debugging");
      80 //
      81 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
      82
      83
      84
      85
      86 // Compiled code entry points
      87 address OptoRuntime::_new_instance_Java                           = NULL;
      88 address OptoRuntime::_new_array_Java                              = NULL;
      89 address OptoRuntime::_new_array_nozero_Java                       = NULL;
      90 address OptoRuntime::_multianewarray2_Java                        = NULL;
      91 address OptoRuntime::_multianewarray3_Java                        = NULL;
      92 address OptoRuntime::_multianewarray4_Java                        = NULL;
      93 address OptoRuntime::_multianewarray5_Java                        = NULL;
      94 address OptoRuntime::_multianewarrayN_Java                        = NULL;
      95 address OptoRuntime::_g1_wb_pre_Java                              = NULL;
      96 address OptoRuntime::_g1_wb_post_Java                             = NULL;
      97 address OptoRuntime::_vtable_must_compile_Java                    = NULL;
      98 address OptoRuntime::_complete_monitor_locking_Java               = NULL;
      99 address OptoRuntime::_rethrow_Java                                = NULL;
     100
     101 address OptoRuntime::_slow_arraycopy_Java                         = NULL;
     102 address OptoRuntime::_register_finalizer_Java                     = NULL;
     103
     104 # ifdef ENABLE_ZAP_DEAD_LOCALS
     105 address OptoRuntime::_zap_dead_Java_locals_Java                   = NULL;
     106 address OptoRuntime::_zap_dead_native_locals_Java                 = NULL;
     107 # endif
     108
     109 ExceptionBlob* OptoRuntime::_exception_blob;
     110
     111 // This should be called in an assertion at the start of OptoRuntime routines
     112 // which are entered from compiled code (all of them)
     113 #ifdef ASSERT
     114 static bool check_compiled_frame(JavaThread* thread) {
     115   assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
     116   RegisterMap map(thread, false);
     117   frame caller = thread->last_frame().sender(&map);
     118   assert(caller.is_compiled_frame(), "not being called from compiled like code");
     119   return true;
     120 }
     121 #endif // ASSERT
     122
     123
     124 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
     125   var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \
     126   if (var == NULL) { return false; }
     127
     128 bool OptoRuntime::generate(ciEnv* env) {
     129
     130   generate_exception_blob();
     131
     132   // Note: tls: Means fetching the return oop out of the thread-local storage
     133   //
     134   //   variable/name                       type-function-gen              , runtime method                  ,fncy_jp, tls,save_args,retpc
     135   // -------------------------------------------------------------------------------------------------------------------------------
     136   gen(env, _new_instance_Java              , new_instance_Type            , new_instance_C                  ,    0 , true , false, false);
     137   gen(env, _new_array_Java                 , new_array_Type               , new_array_C                     ,    0 , true , false, false);
     138   gen(env, _new_array_nozero_Java          , new_array_Type               , new_array_nozero_C              ,    0 , true , false, false);
     139   gen(env, _multianewarray2_Java           , multianewarray2_Type         , multianewarray2_C               ,    0 , true , false, false);
     140   gen(env, _multianewarray3_Java           , multianewarray3_Type         , multianewarray3_C               ,    0 , true , false, false);
     141   gen(env, _multianewarray4_Java           , multianewarray4_Type         , multianewarray4_C               ,    0 , true , false, false);
     142   gen(env, _multianewarray5_Java           , multianewarray5_Type         , multianewarray5_C               ,    0 , true , false, false);
     143   gen(env, _multianewarrayN_Java           , multianewarrayN_Type         , multianewarrayN_C               ,    0 , true , false, false);
     144   gen(env, _g1_wb_pre_Java                 , g1_wb_pre_Type               , SharedRuntime::g1_wb_pre        ,    0 , false, false, false);
     145   gen(env, _g1_wb_post_Java                , g1_wb_post_Type              , SharedRuntime::g1_wb_post       ,    0 , false, false, false);
     146   gen(env, _complete_monitor_locking_Java  , complete_monitor_enter_Type  , SharedRuntime::complete_monitor_locking_C, 0, false, false, false);
     147   gen(env, _rethrow_Java                   , rethrow_Type                 , rethrow_C                       ,    2 , true , false, true );
     148
     149   gen(env, _slow_arraycopy_Java            , slow_arraycopy_Type          , SharedRuntime::slow_arraycopy_C ,    0 , false, false, false);
     150   gen(env, _register_finalizer_Java        , register_finalizer_Type      , register_finalizer              ,    0 , false, false, false);
     151
     152 # ifdef ENABLE_ZAP_DEAD_LOCALS
     153   gen(env, _zap_dead_Java_locals_Java      , zap_dead_locals_Type         , zap_dead_Java_locals_C          ,    0 , false, true , false );
     154   gen(env, _zap_dead_native_locals_Java    , zap_dead_locals_Type         , zap_dead_native_locals_C        ,    0 , false, true , false );
     155 # endif
     156   return true;
     157 }
     158
     159 #undef gen
     160
     161
     162 // Helper method to do generation of RunTimeStub's
     163 address OptoRuntime::generate_stub( ciEnv* env,
     164                                     TypeFunc_generator gen, address C_function,
     165                                     const char *name, int is_fancy_jump,
     166                                     bool pass_tls,
     167                                     bool save_argument_registers,
     168                                     bool return_pc ) {
     169   ResourceMark rm;
     170   Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
     171   return  C.stub_entry_point();
     172 }
     173
     174 const char* OptoRuntime::stub_name(address entry) {
     175 #ifndef PRODUCT
     176   CodeBlob* cb = CodeCache::find_blob(entry);
     177   RuntimeStub* rs =(RuntimeStub *)cb;
     178   assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
     179   return rs->name();
     180 #else
     181   // Fast implementation for product mode (maybe it should be inlined too)
     182   return "runtime stub";
     183 #endif
     184 }
     185
     186
     187 //=============================================================================
     188 // Opto compiler runtime routines
     189 //=============================================================================
     190
     191
     192 //=============================allocation======================================
     193 // We failed the fast-path allocation.  Now we need to do a scavenge or GC
     194 // and try allocation again.
     195
     196 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
     197   // After any safepoint, just before going back to compiled code,
     198   // we inform the GC that we will be doing initializing writes to
     199   // this object in the future without emitting card-marks, so
     200   // GC may take any compensating steps.
     201   // NOTE: Keep this code consistent with GraphKit::store_barrier.
     202
     203   oop new_obj = thread->vm_result();
     204   if (new_obj == NULL)  return;
     205
     206   assert(Universe::heap()->can_elide_tlab_store_barriers(),
     207          "compiler must check this first");
     208   // GC may decide to give back a safer copy of new_obj.
     209   new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
     210   thread->set_vm_result(new_obj);
     211 }
     212
     213 // object allocation
     214 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))
     215   JRT_BLOCK;
     216 #ifndef PRODUCT
     217   SharedRuntime::_new_instance_ctr++;         // new instance requires GC
     218 #endif
     219   assert(check_compiled_frame(thread), "incorrect caller");
     220
     221   // These checks are cheap to make and support reflective allocation.
     222   int lh = klass->layout_helper();
     223   if (Klass::layout_helper_needs_slow_path(lh)
     224       || !InstanceKlass::cast(klass)->is_initialized()) {
     225     KlassHandle kh(THREAD, klass);
     226     kh->check_valid_for_instantiation(false, THREAD);
     227     if (!HAS_PENDING_EXCEPTION) {
     228       InstanceKlass::cast(kh())->initialize(THREAD);
     229     }
     230     if (!HAS_PENDING_EXCEPTION) {
     231       klass = kh();
     232     } else {
     233       klass = NULL;
     234     }
     235   }
     236
     237   if (klass != NULL) {
     238     // Scavenge and allocate an instance.
     239     oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);
     240     thread->set_vm_result(result);
     241
     242     // Pass oops back through thread local storage.  Our apparent type to Java
     243     // is that we return an oop, but we can block on exit from this routine and
     244     // a GC can trash the oop in C's return register.  The generated stub will
     245     // fetch the oop from TLS after any possible GC.
     246   }
     247
     248   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     249   JRT_BLOCK_END;
     250
     251   if (GraphKit::use_ReduceInitialCardMarks()) {
     252     // inform GC that we won't do card marks for initializing writes.
     253     new_store_pre_barrier(thread);
     254   }
     255 JRT_END
     256
     257
     258 // array allocation
     259 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))
     260   JRT_BLOCK;
     261 #ifndef PRODUCT
     262   SharedRuntime::_new_array_ctr++;            // new array requires GC
     263 #endif
     264   assert(check_compiled_frame(thread), "incorrect caller");
     265
     266   // Scavenge and allocate an instance.
     267   oop result;
     268
     269   if (array_type->oop_is_typeArray()) {
     270     // The oopFactory likes to work with the element type.
     271     // (We could bypass the oopFactory, since it doesn't add much value.)
     272     BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
     273     result = oopFactory::new_typeArray(elem_type, len, THREAD);
     274   } else {
     275     // Although the oopFactory likes to work with the elem_type,
     276     // the compiler prefers the array_type, since it must already have
     277     // that latter value in hand for the fast path.
     278     Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();
     279     result = oopFactory::new_objArray(elem_type, len, THREAD);
     280   }
     281
     282   // Pass oops back through thread local storage.  Our apparent type to Java
     283   // is that we return an oop, but we can block on exit from this routine and
     284   // a GC can trash the oop in C's return register.  The generated stub will
     285   // fetch the oop from TLS after any possible GC.
     286   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     287   thread->set_vm_result(result);
     288   JRT_BLOCK_END;
     289
     290   if (GraphKit::use_ReduceInitialCardMarks()) {
     291     // inform GC that we won't do card marks for initializing writes.
     292     new_store_pre_barrier(thread);
     293   }
     294 JRT_END
     295
     296 // array allocation without zeroing
     297 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))
     298   JRT_BLOCK;
     299 #ifndef PRODUCT
     300   SharedRuntime::_new_array_ctr++;            // new array requires GC
     301 #endif
     302   assert(check_compiled_frame(thread), "incorrect caller");
     303
     304   // Scavenge and allocate an instance.
     305   oop result;
     306
     307   assert(array_type->oop_is_typeArray(), "should be called only for type array");
     308   // The oopFactory likes to work with the element type.
     309   BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
     310   result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
     311
     312   // Pass oops back through thread local storage.  Our apparent type to Java
     313   // is that we return an oop, but we can block on exit from this routine and
     314   // a GC can trash the oop in C's return register.  The generated stub will
     315   // fetch the oop from TLS after any possible GC.
     316   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     317   thread->set_vm_result(result);
     318   JRT_BLOCK_END;
     319
     320   if (GraphKit::use_ReduceInitialCardMarks()) {
     321     // inform GC that we won't do card marks for initializing writes.
     322     new_store_pre_barrier(thread);
     323   }
     324
     325   oop result = thread->vm_result();
     326   if ((len > 0) && (result != NULL) &&
     327       is_deoptimized_caller_frame(thread)) {
     328     // Zero array here if the caller is deoptimized.
     329     int size = ((typeArrayOop)result)->object_size();
     330     BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();
     331     const size_t hs = arrayOopDesc::header_size(elem_type);
     332     // Align to next 8 bytes to avoid trashing arrays's length.
     333     const size_t aligned_hs = align_object_offset(hs);
     334     HeapWord* obj = (HeapWord*)result;
     335     if (aligned_hs > hs) {
     336       Copy::zero_to_words(obj+hs, aligned_hs-hs);
     337     }
     338     // Optimized zeroing.
     339     Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);
     340   }
     341
     342 JRT_END
     343
     344 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
     345
     346 // multianewarray for 2 dimensions
     347 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))
     348 #ifndef PRODUCT
     349   SharedRuntime::_multi2_ctr++;                // multianewarray for 1 dimension
     350 #endif
     351   assert(check_compiled_frame(thread), "incorrect caller");
     352   assert(elem_type->is_klass(), "not a class");
     353   jint dims[2];
     354   dims[0] = len1;
     355   dims[1] = len2;
     356   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
     357   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     358   thread->set_vm_result(obj);
     359 JRT_END
     360
     361 // multianewarray for 3 dimensions
     362 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))
     363 #ifndef PRODUCT
     364   SharedRuntime::_multi3_ctr++;                // multianewarray for 1 dimension
     365 #endif
     366   assert(check_compiled_frame(thread), "incorrect caller");
     367   assert(elem_type->is_klass(), "not a class");
     368   jint dims[3];
     369   dims[0] = len1;
     370   dims[1] = len2;
     371   dims[2] = len3;
     372   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
     373   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     374   thread->set_vm_result(obj);
     375 JRT_END
     376
     377 // multianewarray for 4 dimensions
     378 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
     379 #ifndef PRODUCT
     380   SharedRuntime::_multi4_ctr++;                // multianewarray for 1 dimension
     381 #endif
     382   assert(check_compiled_frame(thread), "incorrect caller");
     383   assert(elem_type->is_klass(), "not a class");
     384   jint dims[4];
     385   dims[0] = len1;
     386   dims[1] = len2;
     387   dims[2] = len3;
     388   dims[3] = len4;
     389   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
     390   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     391   thread->set_vm_result(obj);
     392 JRT_END
     393
     394 // multianewarray for 5 dimensions
     395 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
     396 #ifndef PRODUCT
     397   SharedRuntime::_multi5_ctr++;                // multianewarray for 1 dimension
     398 #endif
     399   assert(check_compiled_frame(thread), "incorrect caller");
     400   assert(elem_type->is_klass(), "not a class");
     401   jint dims[5];
     402   dims[0] = len1;
     403   dims[1] = len2;
     404   dims[2] = len3;
     405   dims[3] = len4;
     406   dims[4] = len5;
     407   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
     408   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     409   thread->set_vm_result(obj);
     410 JRT_END
     411
     412 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))
     413   assert(check_compiled_frame(thread), "incorrect caller");
     414   assert(elem_type->is_klass(), "not a class");
     415   assert(oop(dims)->is_typeArray(), "not an array");
     416
     417   ResourceMark rm;
     418   jint len = dims->length();
     419   assert(len > 0, "Dimensions array should contain data");
     420   jint *j_dims = typeArrayOop(dims)->int_at_addr(0);
     421   jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);
     422   Copy::conjoint_jints_atomic(j_dims, c_dims, len);
     423
     424   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);
     425   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
     426   thread->set_vm_result(obj);
     427 JRT_END
     428
     429
     430 const TypeFunc *OptoRuntime::new_instance_Type() {
     431   // create input type (domain)
     432   const Type **fields = TypeTuple::fields(1);
     433   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
     434   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
     435
     436   // create result type (range)
     437   fields = TypeTuple::fields(1);
     438   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
     439
     440   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
     441
     442   return TypeFunc::make(domain, range);
     443 }
     444
     445
     446 const TypeFunc *OptoRuntime::athrow_Type() {
     447   // create input type (domain)
     448   const Type **fields = TypeTuple::fields(1);
     449   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
     450   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
     451
     452   // create result type (range)
     453   fields = TypeTuple::fields(0);
     454
     455   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
     456
     457   return TypeFunc::make(domain, range);
     458 }
     459
     460
     461 const TypeFunc *OptoRuntime::new_array_Type() {
     462   // create input type (domain)
     463   const Type **fields = TypeTuple::fields(2);
     464   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass
     465   fields[TypeFunc::Parms+1] = TypeInt::INT;       // array size
     466   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     467
     468   // create result type (range)
     469   fields = TypeTuple::fields(1);
     470   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
     471
     472   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
     473
     474   return TypeFunc::make(domain, range);
     475 }
     476
     477 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
     478   // create input type (domain)
     479   const int nargs = ndim + 1;
     480   const Type **fields = TypeTuple::fields(nargs);
     481   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass
     482   for( int i = 1; i < nargs; i++ )
     483     fields[TypeFunc::Parms + i] = TypeInt::INT;       // array size
     484   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
     485
     486   // create result type (range)
     487   fields = TypeTuple::fields(1);
     488   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
     489   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
     490
     491   return TypeFunc::make(domain, range);
     492 }
     493
     494 const TypeFunc *OptoRuntime::multianewarray2_Type() {
     495   return multianewarray_Type(2);
     496 }
     497
     498 const TypeFunc *OptoRuntime::multianewarray3_Type() {
     499   return multianewarray_Type(3);
     500 }
     501
     502 const TypeFunc *OptoRuntime::multianewarray4_Type() {
     503   return multianewarray_Type(4);
     504 }
     505
     506 const TypeFunc *OptoRuntime::multianewarray5_Type() {
     507   return multianewarray_Type(5);
     508 }
     509
     510 const TypeFunc *OptoRuntime::multianewarrayN_Type() {
     511   // create input type (domain)
     512   const Type **fields = TypeTuple::fields(2);
     513   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass
     514   fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;   // array of dim sizes
     515   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     516
     517   // create result type (range)
     518   fields = TypeTuple::fields(1);
     519   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
     520   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
     521
     522   return TypeFunc::make(domain, range);
     523 }
     524
     525 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
     526   const Type **fields = TypeTuple::fields(2);
     527   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
     528   fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
     529   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     530
     531   // create result type (range)
     532   fields = TypeTuple::fields(0);
     533   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
     534
     535   return TypeFunc::make(domain, range);
     536 }
     537
     538 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
     539
     540   const Type **fields = TypeTuple::fields(2);
     541   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL;  // Card addr
     542   fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL;  // thread
     543   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     544
     545   // create result type (range)
     546   fields = TypeTuple::fields(0);
     547   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
     548
     549   return TypeFunc::make(domain, range);
     550 }
     551
     552 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
     553   // create input type (domain)
     554   const Type **fields = TypeTuple::fields(1);
     555   fields[TypeFunc::Parms+0] = TypeInt::INT; // trap_reason (deopt reason and action)
     556   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
     557
     558   // create result type (range)
     559   fields = TypeTuple::fields(0);
     560   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
     561
     562   return TypeFunc::make(domain, range);
     563 }
     564
     565 # ifdef ENABLE_ZAP_DEAD_LOCALS
     566 // Type used for stub generation for zap_dead_locals.
     567 // No inputs or outputs
     568 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
     569   // create input type (domain)
     570   const Type **fields = TypeTuple::fields(0);
     571   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
     572
     573   // create result type (range)
     574   fields = TypeTuple::fields(0);
     575   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
     576
     577   return TypeFunc::make(domain,range);
     578 }
     579 # endif
     580
     581
     582 //-----------------------------------------------------------------------------
     583 // Monitor Handling
     584 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
     585   // create input type (domain)
     586   const Type **fields = TypeTuple::fields(2);
     587   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // Object to be Locked
     588   fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM;   // Address of stack location for lock
     589   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
     590
     591   // create result type (range)
     592   fields = TypeTuple::fields(0);
     593
     594   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
     595
     596   return TypeFunc::make(domain,range);
     597 }
     598
     599
     600 //-----------------------------------------------------------------------------
     601 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
     602   // create input type (domain)
     603   const Type **fields = TypeTuple::fields(2);
     604   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // Object to be Locked
     605   fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM;   // Address of stack location for lock
     606   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
     607
     608   // create result type (range)
     609   fields = TypeTuple::fields(0);
     610
     611   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
     612
     613   return TypeFunc::make(domain,range);
     614 }
     615
     616 const TypeFunc* OptoRuntime::flush_windows_Type() {
     617   // create input type (domain)
     618   const Type** fields = TypeTuple::fields(1);
     619   fields[TypeFunc::Parms+0] = NULL; // void
     620   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
     621
     622   // create result type
     623   fields = TypeTuple::fields(1);
     624   fields[TypeFunc::Parms+0] = NULL; // void
     625   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
     626
     627   return TypeFunc::make(domain, range);
     628 }
     629
     630 const TypeFunc* OptoRuntime::l2f_Type() {
     631   // create input type (domain)
     632   const Type **fields = TypeTuple::fields(2);
     633   fields[TypeFunc::Parms+0] = TypeLong::LONG;
     634   fields[TypeFunc::Parms+1] = Type::HALF;
     635   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     636
     637   // create result type (range)
     638   fields = TypeTuple::fields(1);
     639   fields[TypeFunc::Parms+0] = Type::FLOAT;
     640   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
     641
     642   return TypeFunc::make(domain, range);
     643 }
     644
     645 const TypeFunc* OptoRuntime::modf_Type() {
     646   const Type **fields = TypeTuple::fields(2);
     647   fields[TypeFunc::Parms+0] = Type::FLOAT;
     648   fields[TypeFunc::Parms+1] = Type::FLOAT;
     649   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     650
     651   // create result type (range)
     652   fields = TypeTuple::fields(1);
     653   fields[TypeFunc::Parms+0] = Type::FLOAT;
     654
     655   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
     656
     657   return TypeFunc::make(domain, range);
     658 }
     659
     660 const TypeFunc *OptoRuntime::Math_D_D_Type() {
     661   // create input type (domain)
     662   const Type **fields = TypeTuple::fields(2);
     663   // Symbol* name of class to be loaded
     664   fields[TypeFunc::Parms+0] = Type::DOUBLE;
     665   fields[TypeFunc::Parms+1] = Type::HALF;
     666   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
     667
     668   // create result type (range)
     669   fields = TypeTuple::fields(2);
     670   fields[TypeFunc::Parms+0] = Type::DOUBLE;
     671   fields[TypeFunc::Parms+1] = Type::HALF;
     672   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
     673
     674   return TypeFunc::make(domain, range);
     675 }
     676
     677 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
     678   const Type **fields = TypeTuple::fields(4);
     679   fields[TypeFunc::Parms+0] = Type::DOUBLE;
     680   fields[TypeFunc::Parms+1] = Type::HALF;
     681   fields[TypeFunc::Parms+2] = Type::DOUBLE;
     682   fields[TypeFunc::Parms+3] = Type::HALF;
     683   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
     684
     685   // create result type (range)
     686   fields = TypeTuple::fields(2);
     687   fields[TypeFunc::Parms+0] = Type::DOUBLE;
     688   fields[TypeFunc::Parms+1] = Type::HALF;
     689   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
     690
     691   return TypeFunc::make(domain, range);
     692 }
     693
     694 //-------------- currentTimeMillis, currentTimeNanos, etc
     695
     696 const TypeFunc* OptoRuntime::void_long_Type() {
     697   // create input type (domain)
     698   const Type **fields = TypeTuple::fields(0);
     699   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
     700
     701   // create result type (range)
     702   fields = TypeTuple::fields(2);
     703   fields[TypeFunc::Parms+0] = TypeLong::LONG;
     704   fields[TypeFunc::Parms+1] = Type::HALF;
     705   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
     706
     707   return TypeFunc::make(domain, range);
     708 }
     709
     710 // arraycopy stub variations:
     711 enum ArrayCopyType {
     712   ac_fast,                      // void(ptr, ptr, size_t)
     713   ac_checkcast,                 //  int(ptr, ptr, size_t, size_t, ptr)
     714   ac_slow,                      // void(ptr, int, ptr, int, int)
     715   ac_generic                    //  int(ptr, int, ptr, int, int)
     716 };
     717
     718 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
     719   // create input type (domain)
     720   int num_args      = (act == ac_fast ? 3 : 5);
     721   int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
     722   int argcnt = num_args;
     723   LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
     724   const Type** fields = TypeTuple::fields(argcnt);
     725   int argp = TypeFunc::Parms;
     726   fields[argp++] = TypePtr::NOTNULL;    // src
     727   if (num_size_args == 0) {
     728     fields[argp++] = TypeInt::INT;      // src_pos
     729   }
     730   fields[argp++] = TypePtr::NOTNULL;    // dest
     731   if (num_size_args == 0) {
     732     fields[argp++] = TypeInt::INT;      // dest_pos
     733     fields[argp++] = TypeInt::INT;      // length
     734   }
     735   while (num_size_args-- > 0) {
     736     fields[argp++] = TypeX_X;               // size in whatevers (size_t)
     737     LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
     738   }
     739   if (act == ac_checkcast) {
     740     fields[argp++] = TypePtr::NOTNULL;  // super_klass
     741   }
     742   assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
     743   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     744
     745   // create result type if needed
     746   int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
     747   fields = TypeTuple::fields(1);
     748   if (retcnt == 0)
     749     fields[TypeFunc::Parms+0] = NULL; // void
     750   else
     751     fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
     752   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
     753   return TypeFunc::make(domain, range);
     754 }
     755
     756 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
     757   // This signature is simple:  Two base pointers and a size_t.
     758   return make_arraycopy_Type(ac_fast);
     759 }
     760
     761 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
     762   // An extension of fast_arraycopy_Type which adds type checking.
     763   return make_arraycopy_Type(ac_checkcast);
     764 }
     765
     766 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
     767   // This signature is exactly the same as System.arraycopy.
     768   // There are no intptr_t (int/long) arguments.
     769   return make_arraycopy_Type(ac_slow);
     770 }
     771
     772 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
     773   // This signature is like System.arraycopy, except that it returns status.
     774   return make_arraycopy_Type(ac_generic);
     775 }
     776
     777
     778 const TypeFunc* OptoRuntime::array_fill_Type() {
     779   const Type** fields;
     780   int argp = TypeFunc::Parms;
     781   if (CCallingConventionRequiresIntsAsLongs) {
     782   // create input type (domain): pointer, int, size_t
     783     fields = TypeTuple::fields(3 LP64_ONLY( + 2));
     784     fields[argp++] = TypePtr::NOTNULL;
     785     fields[argp++] = TypeLong::LONG;
     786     fields[argp++] = Type::HALF;
     787   } else {
     788     // create input type (domain): pointer, int, size_t
     789     fields = TypeTuple::fields(3 LP64_ONLY( + 1));
     790     fields[argp++] = TypePtr::NOTNULL;
     791     fields[argp++] = TypeInt::INT;
     792   }
     793   fields[argp++] = TypeX_X;               // size in whatevers (size_t)
     794   LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
     795   const TypeTuple *domain = TypeTuple::make(argp, fields);
     796
     797   // create result type
     798   fields = TypeTuple::fields(1);
     799   fields[TypeFunc::Parms+0] = NULL; // void
     800   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
     801
     802   return TypeFunc::make(domain, range);
     803 }
     804
     805 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)
     806 const TypeFunc* OptoRuntime::aescrypt_block_Type() {
     807   // create input type (domain)
     808   int num_args      = 3;
     809   if (Matcher::pass_original_key_for_aes()) {
     810     num_args = 4;
     811   }
     812   int argcnt = num_args;
     813   const Type** fields = TypeTuple::fields(argcnt);
     814   int argp = TypeFunc::Parms;
     815   fields[argp++] = TypePtr::NOTNULL;    // src
     816   fields[argp++] = TypePtr::NOTNULL;    // dest
     817   fields[argp++] = TypePtr::NOTNULL;    // k array
     818   if (Matcher::pass_original_key_for_aes()) {
     819     fields[argp++] = TypePtr::NOTNULL;    // original k array
     820   }
     821   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     822   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     823
     824   // no result type needed
     825   fields = TypeTuple::fields(1);
     826   fields[TypeFunc::Parms+0] = NULL; // void
     827   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
     828   return TypeFunc::make(domain, range);
     829 }
     830
     831 /**
     832  * int updateBytesCRC32(int crc, byte* b, int len)
     833  */
     834 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() {
     835   // create input type (domain)
     836   int num_args      = 3;
     837   int argcnt = num_args;
     838   const Type** fields = TypeTuple::fields(argcnt);
     839   int argp = TypeFunc::Parms;
     840   fields[argp++] = TypeInt::INT;        // crc
     841   fields[argp++] = TypePtr::NOTNULL;    // src
     842   fields[argp++] = TypeInt::INT;        // len
     843   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     844   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     845
     846   // result type needed
     847   fields = TypeTuple::fields(1);
     848   fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result
     849   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
     850   return TypeFunc::make(domain, range);
     851 }
     852
     853 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int
     854 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {
     855   // create input type (domain)
     856   int num_args      = 5;
     857   if (Matcher::pass_original_key_for_aes()) {
     858     num_args = 6;
     859   }
     860   int argcnt = num_args;
     861   const Type** fields = TypeTuple::fields(argcnt);
     862   int argp = TypeFunc::Parms;
     863   fields[argp++] = TypePtr::NOTNULL;    // src
     864   fields[argp++] = TypePtr::NOTNULL;    // dest
     865   fields[argp++] = TypePtr::NOTNULL;    // k array
     866   fields[argp++] = TypePtr::NOTNULL;    // r array
     867   fields[argp++] = TypeInt::INT;        // src len
     868   if (Matcher::pass_original_key_for_aes()) {
     869     fields[argp++] = TypePtr::NOTNULL;    // original k array
     870   }
     871   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     872   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     873
     874   // returning cipher len (int)
     875   fields = TypeTuple::fields(1);
     876   fields[TypeFunc::Parms+0] = TypeInt::INT;
     877   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
     878   return TypeFunc::make(domain, range);
     879 }
     880
     881 /*
     882  * void implCompress(byte[] buf, int ofs)
     883  */
     884 const TypeFunc* OptoRuntime::sha_implCompress_Type() {
     885   // create input type (domain)
     886   int num_args = 2;
     887   int argcnt = num_args;
     888   const Type** fields = TypeTuple::fields(argcnt);
     889   int argp = TypeFunc::Parms;
     890   fields[argp++] = TypePtr::NOTNULL; // buf
     891   fields[argp++] = TypePtr::NOTNULL; // state
     892   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     893   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     894
     895   // no result type needed
     896   fields = TypeTuple::fields(1);
     897   fields[TypeFunc::Parms+0] = NULL; // void
     898   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
     899   return TypeFunc::make(domain, range);
     900 }
     901
     902 /*
     903  * int implCompressMultiBlock(byte[] b, int ofs, int limit)
     904  */
     905 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() {
     906   // create input type (domain)
     907   int num_args = 4;
     908   int argcnt = num_args;
     909   const Type** fields = TypeTuple::fields(argcnt);
     910   int argp = TypeFunc::Parms;
     911   fields[argp++] = TypePtr::NOTNULL; // buf
     912   fields[argp++] = TypePtr::NOTNULL; // state
     913   fields[argp++] = TypeInt::INT;     // ofs
     914   fields[argp++] = TypeInt::INT;     // limit
     915   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     916   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     917
     918   // returning ofs (int)
     919   fields = TypeTuple::fields(1);
     920   fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs
     921   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
     922   return TypeFunc::make(domain, range);
     923 }
     924
     925 const TypeFunc* OptoRuntime::multiplyToLen_Type() {
     926   // create input type (domain)
     927   int num_args      = 6;
     928   int argcnt = num_args;
     929   const Type** fields = TypeTuple::fields(argcnt);
     930   int argp = TypeFunc::Parms;
     931   fields[argp++] = TypePtr::NOTNULL;    // x
     932   fields[argp++] = TypeInt::INT;        // xlen
     933   fields[argp++] = TypePtr::NOTNULL;    // y
     934   fields[argp++] = TypeInt::INT;        // ylen
     935   fields[argp++] = TypePtr::NOTNULL;    // z
     936   fields[argp++] = TypeInt::INT;        // zlen
     937   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     938   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     939
     940   // no result type needed
     941   fields = TypeTuple::fields(1);
     942   fields[TypeFunc::Parms+0] = NULL;
     943   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
     944   return TypeFunc::make(domain, range);
     945 }
     946
     947 const TypeFunc* OptoRuntime::squareToLen_Type() {
     948   // create input type (domain)
     949   int num_args      = 4;
     950   int argcnt = num_args;
     951   const Type** fields = TypeTuple::fields(argcnt);
     952   int argp = TypeFunc::Parms;
     953   fields[argp++] = TypePtr::NOTNULL;    // x
     954   fields[argp++] = TypeInt::INT;        // len
     955   fields[argp++] = TypePtr::NOTNULL;    // z
     956   fields[argp++] = TypeInt::INT;        // zlen
     957   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     958   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     959
     960   // no result type needed
     961   fields = TypeTuple::fields(1);
     962   fields[TypeFunc::Parms+0] = NULL;
     963   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);
     964   return TypeFunc::make(domain, range);
     965 }
     966
     967 // for mulAdd calls, 2 pointers and 3 ints, returning int
     968 const TypeFunc* OptoRuntime::mulAdd_Type() {
     969   // create input type (domain)
     970   int num_args      = 5;
     971   int argcnt = num_args;
     972   const Type** fields = TypeTuple::fields(argcnt);
     973   int argp = TypeFunc::Parms;
     974   fields[argp++] = TypePtr::NOTNULL;    // out
     975   fields[argp++] = TypePtr::NOTNULL;    // in
     976   fields[argp++] = TypeInt::INT;        // offset
     977   fields[argp++] = TypeInt::INT;        // len
     978   fields[argp++] = TypeInt::INT;        // k
     979   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");
     980   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
     981
     982   // returning carry (int)
     983   fields = TypeTuple::fields(1);
     984   fields[TypeFunc::Parms+0] = TypeInt::INT;
     985   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields);
     986   return TypeFunc::make(domain, range);
     987 }
     988
     989
     990
     991 //------------- Interpreter state access for on stack replacement
     992 const TypeFunc* OptoRuntime::osr_end_Type() {
     993   // create input type (domain)
     994   const Type **fields = TypeTuple::fields(1);
     995   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
     996   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
     997
     998   // create result type
     999   fields = TypeTuple::fields(1);
    1000   // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
    1001   fields[TypeFunc::Parms+0] = NULL; // void
    1002   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
    1003   return TypeFunc::make(domain, range);
    1004 }
    1005
    1006 //-------------- methodData update helpers
    1007
    1008 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
    1009   // create input type (domain)
    1010   const Type **fields = TypeTuple::fields(2);
    1011   fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL;    // methodData pointer
    1012   fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM;    // receiver oop
    1013   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
    1014
    1015   // create result type
    1016   fields = TypeTuple::fields(1);
    1017   fields[TypeFunc::Parms+0] = NULL; // void
    1018   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
    1019   return TypeFunc::make(domain,range);
    1020 }
    1021
    1022 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
    1023   if (receiver == NULL) return;
    1024   Klass* receiver_klass = receiver->klass();
    1025
    1026   intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
    1027   int empty_row = -1;           // free row, if any is encountered
    1028
    1029   // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
    1030   for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
    1031     // if (vc->receiver(row) == receiver_klass)
    1032     int receiver_off = ReceiverTypeData::receiver_cell_index(row);
    1033     intptr_t row_recv = *(mdp + receiver_off);
    1034     if (row_recv == (intptr_t) receiver_klass) {
    1035       // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
    1036       int count_off = ReceiverTypeData::receiver_count_cell_index(row);
    1037       *(mdp + count_off) += DataLayout::counter_increment;
    1038       return;
    1039     } else if (row_recv == 0) {
    1040       // else if (vc->receiver(row) == NULL)
    1041       empty_row = (int) row;
    1042     }
    1043   }
    1044
    1045   if (empty_row != -1) {
    1046     int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
    1047     // vc->set_receiver(empty_row, receiver_klass);
    1048     *(mdp + receiver_off) = (intptr_t) receiver_klass;
    1049     // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
    1050     int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
    1051     *(mdp + count_off) = DataLayout::counter_increment;
    1052   } else {
    1053     // Receiver did not match any saved receiver and there is no empty row for it.
    1054     // Increment total counter to indicate polymorphic case.
    1055     intptr_t* count_p = (intptr_t*)(((uint8_t*)(data)) + in_bytes(CounterData::count_offset()));
    1056     *count_p += DataLayout::counter_increment;
    1057   }
    1058 JRT_END
    1059
    1060 //-------------------------------------------------------------------------------------
    1061 // register policy
    1062
    1063 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
    1064   assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
    1065   switch (register_save_policy[reg]) {
    1066     case 'C': return false; //SOC
    1067     case 'E': return true ; //SOE
    1068     case 'N': return false; //NS
    1069     case 'A': return false; //AS
    1070   }
    1071   ShouldNotReachHere();
    1072   return false;
    1073 }
    1074
    1075 //-----------------------------------------------------------------------
    1076 // Exceptions
    1077 //
    1078
    1079 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
    1080
    1081 // The method is an entry that is always called by a C++ method not
    1082 // directly from compiled code. Compiled code will call the C++ method following.
    1083 // We can't allow async exception to be installed during  exception processing.
    1084 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
    1085
    1086   // Do not confuse exception_oop with pending_exception. The exception_oop
    1087   // is only used to pass arguments into the method. Not for general
    1088   // exception handling.  DO NOT CHANGE IT to use pending_exception, since
    1089   // the runtime stubs checks this on exit.
    1090   assert(thread->exception_oop() != NULL, "exception oop is found");
    1091   address handler_address = NULL;
    1092
    1093   Handle exception(thread, thread->exception_oop());
    1094   address pc = thread->exception_pc();
    1095
    1096   // Clear out the exception oop and pc since looking up an
    1097   // exception handler can cause class loading, which might throw an
    1098   // exception and those fields are expected to be clear during
    1099   // normal bytecode execution.
    1100   thread->clear_exception_oop_and_pc();
    1101
    1102   if (TraceExceptions) {
    1103     trace_exception(exception(), pc, "");
    1104   }
    1105
    1106   // for AbortVMOnException flag
    1107   NOT_PRODUCT(Exceptions::debug_check_abort(exception));
    1108
    1109 #ifdef ASSERT
    1110   if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
    1111     // should throw an exception here
    1112     ShouldNotReachHere();
    1113   }
    1114 #endif
    1115
    1116   // new exception handling: this method is entered only from adapters
    1117   // exceptions from compiled java methods are handled in compiled code
    1118   // using rethrow node
    1119
    1120   nm = CodeCache::find_nmethod(pc);
    1121   assert(nm != NULL, "No NMethod found");
    1122   if (nm->is_native_method()) {
    1123     fatal("Native method should not have path to exception handling");
    1124   } else {
    1125     // we are switching to old paradigm: search for exception handler in caller_frame
    1126     // instead in exception handler of caller_frame.sender()
    1127
    1128     if (JvmtiExport::can_post_on_exceptions()) {
    1129       // "Full-speed catching" is not necessary here,
    1130       // since we're notifying the VM on every catch.
    1131       // Force deoptimization and the rest of the lookup
    1132       // will be fine.
    1133       deoptimize_caller_frame(thread);
    1134     }
    1135
    1136     // Check the stack guard pages.  If enabled, look for handler in this frame;
    1137     // otherwise, forcibly unwind the frame.
    1138     //
    1139     // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
    1140     bool force_unwind = !thread->reguard_stack();
    1141     bool deopting = false;
    1142     if (nm->is_deopt_pc(pc)) {
    1143       deopting = true;
    1144       RegisterMap map(thread, false);
    1145       frame deoptee = thread->last_frame().sender(&map);
    1146       assert(deoptee.is_deoptimized_frame(), "must be deopted");
    1147       // Adjust the pc back to the original throwing pc
    1148       pc = deoptee.pc();
    1149     }
    1150
    1151     // If we are forcing an unwind because of stack overflow then deopt is
    1152     // irrelevant since we are throwing the frame away anyway.
    1153
    1154     if (deopting && !force_unwind) {
    1155       handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
    1156     } else {
    1157
    1158       handler_address =
    1159         force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
    1160
    1161       if (handler_address == NULL) {
    1162         Handle original_exception(thread, exception());
    1163         handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
    1164         assert (handler_address != NULL, "must have compiled handler");
    1165         // Update the exception cache only when the unwind was not forced
    1166         // and there didn't happen another exception during the computation of the
    1167         // compiled exception handler.
    1168         if (!force_unwind && original_exception() == exception()) {
    1169           nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
    1170         }
    1171       } else {
    1172         assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
    1173       }
    1174     }
    1175
    1176     thread->set_exception_pc(pc);
    1177     thread->set_exception_handler_pc(handler_address);
    1178
    1179     // Check if the exception PC is a MethodHandle call site.
    1180     thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
    1181   }
    1182
    1183   // Restore correct return pc.  Was saved above.
    1184   thread->set_exception_oop(exception());
    1185   return handler_address;
    1186
    1187 JRT_END
    1188
    1189 // We are entering here from exception_blob
    1190 // If there is a compiled exception handler in this method, we will continue there;
    1191 // otherwise we will unwind the stack and continue at the caller of top frame method
    1192 // Note we enter without the usual JRT wrapper. We will call a helper routine that
    1193 // will do the normal VM entry. We do it this way so that we can see if the nmethod
    1194 // we looked up the handler for has been deoptimized in the meantime. If it has been
    1195 // we must not use the handler and instead return the deopt blob.
    1196 address OptoRuntime::handle_exception_C(JavaThread* thread) {
    1197 //
    1198 // We are in Java not VM and in debug mode we have a NoHandleMark
    1199 //
    1200 #ifndef PRODUCT
    1201   SharedRuntime::_find_handler_ctr++;          // find exception handler
    1202 #endif
    1203   debug_only(NoHandleMark __hm;)
    1204   nmethod* nm = NULL;
    1205   address handler_address = NULL;
    1206   {
    1207     // Enter the VM
    1208
    1209     ResetNoHandleMark rnhm;
    1210     handler_address = handle_exception_C_helper(thread, nm);
    1211   }
    1212
    1213   // Back in java: Use no oops, DON'T safepoint
    1214
    1215   // Now check to see if the handler we are returning is in a now
    1216   // deoptimized frame
    1217
    1218   if (nm != NULL) {
    1219     RegisterMap map(thread, false);
    1220     frame caller = thread->last_frame().sender(&map);
    1221 #ifdef ASSERT
    1222     assert(caller.is_compiled_frame(), "must be");
    1223 #endif // ASSERT
    1224     if (caller.is_deoptimized_frame()) {
    1225       handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
    1226     }
    1227   }
    1228   return handler_address;
    1229 }
    1230
    1231 //------------------------------rethrow----------------------------------------
    1232 // We get here after compiled code has executed a 'RethrowNode'.  The callee
    1233 // is either throwing or rethrowing an exception.  The callee-save registers
    1234 // have been restored, synchronized objects have been unlocked and the callee
    1235 // stack frame has been removed.  The return address was passed in.
    1236 // Exception oop is passed as the 1st argument.  This routine is then called
    1237 // from the stub.  On exit, we know where to jump in the caller's code.
    1238 // After this C code exits, the stub will pop his frame and end in a jump
    1239 // (instead of a return).  We enter the caller's default handler.
    1240 //
    1241 // This must be JRT_LEAF:
    1242 //     - caller will not change its state as we cannot block on exit,
    1243 //       therefore raw_exception_handler_for_return_address is all it takes
    1244 //       to handle deoptimized blobs
    1245 //
    1246 // However, there needs to be a safepoint check in the middle!  So compiled
    1247 // safepoints are completely watertight.
    1248 //
    1249 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
    1250 //
    1251 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
    1252 //
    1253 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
    1254 #ifndef PRODUCT
    1255   SharedRuntime::_rethrow_ctr++;               // count rethrows
    1256 #endif
    1257   assert (exception != NULL, "should have thrown a NULLPointerException");
    1258 #ifdef ASSERT
    1259   if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
    1260     // should throw an exception here
    1261     ShouldNotReachHere();
    1262   }
    1263 #endif
    1264
    1265   thread->set_vm_result(exception);
    1266   // Frame not compiled (handles deoptimization blob)
    1267   return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
    1268 }
    1269
    1270
    1271 const TypeFunc *OptoRuntime::rethrow_Type() {
    1272   // create input type (domain)
    1273   const Type **fields = TypeTuple::fields(1);
    1274   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
    1275   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
    1276
    1277   // create result type (range)
    1278   fields = TypeTuple::fields(1);
    1279   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
    1280   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
    1281
    1282   return TypeFunc::make(domain, range);
    1283 }
    1284
    1285
    1286 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
    1287   // Deoptimize the caller before continuing, as the compiled
    1288   // exception handler table may not be valid.
    1289   if (!StressCompiledExceptionHandlers && doit) {
    1290     deoptimize_caller_frame(thread);
    1291   }
    1292 }
    1293
    1294 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {
    1295   // Called from within the owner thread, so no need for safepoint
    1296   RegisterMap reg_map(thread);
    1297   frame stub_frame = thread->last_frame();
    1298   assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
    1299   frame caller_frame = stub_frame.sender(&reg_map);
    1300
    1301   // Deoptimize the caller frame.
    1302   Deoptimization::deoptimize_frame(thread, caller_frame.id());
    1303 }
    1304
    1305
    1306 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {
    1307   // Called from within the owner thread, so no need for safepoint
    1308   RegisterMap reg_map(thread);
    1309   frame stub_frame = thread->last_frame();
    1310   assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
    1311   frame caller_frame = stub_frame.sender(&reg_map);
    1312   return caller_frame.is_deoptimized_frame();
    1313 }
    1314
    1315
    1316 const TypeFunc *OptoRuntime::register_finalizer_Type() {
    1317   // create input type (domain)
    1318   const Type **fields = TypeTuple::fields(1);
    1319   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // oop;          Receiver
    1320   // // The JavaThread* is passed to each routine as the last argument
    1321   // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL;  // JavaThread *; Executing thread
    1322   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
    1323
    1324   // create result type (range)
    1325   fields = TypeTuple::fields(0);
    1326
    1327   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
    1328
    1329   return TypeFunc::make(domain,range);
    1330 }
    1331
    1332
    1333 //-----------------------------------------------------------------------------
    1334 // Dtrace support.  entry and exit probes have the same signature
    1335 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
    1336   // create input type (domain)
    1337   const Type **fields = TypeTuple::fields(2);
    1338   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
    1339   fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM;  // Method*;    Method we are entering
    1340   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
    1341
    1342   // create result type (range)
    1343   fields = TypeTuple::fields(0);
    1344
    1345   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
    1346
    1347   return TypeFunc::make(domain,range);
    1348 }
    1349
    1350 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
    1351   // create input type (domain)
    1352   const Type **fields = TypeTuple::fields(2);
    1353   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
    1354   fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;  // oop;    newly allocated object
    1355
    1356   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
    1357
    1358   // create result type (range)
    1359   fields = TypeTuple::fields(0);
    1360
    1361   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
    1362
    1363   return TypeFunc::make(domain,range);
    1364 }
    1365
    1366
    1367 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
    1368   assert(obj->is_oop(), "must be a valid oop");
    1369   assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
    1370   InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
    1371 JRT_END
    1372
    1373 //-----------------------------------------------------------------------------
    1374
    1375 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
    1376
    1377 //
    1378 // dump the collected NamedCounters.
    1379 //
    1380 void OptoRuntime::print_named_counters() {
    1381   int total_lock_count = 0;
    1382   int eliminated_lock_count = 0;
    1383
    1384   NamedCounter* c = _named_counters;
    1385   while (c) {
    1386     if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
    1387       int count = c->count();
    1388       if (count > 0) {
    1389         bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
    1390         if (Verbose) {
    1391           tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
    1392         }
    1393         total_lock_count += count;
    1394         if (eliminated) {
    1395           eliminated_lock_count += count;
    1396         }
    1397       }
    1398     } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
    1399       BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
    1400       if (blc->nonzero()) {
    1401         tty->print_cr("%s", c->name());
    1402         blc->print_on(tty);
    1403       }
    1404 #if INCLUDE_RTM_OPT
    1405     } else if (c->tag() == NamedCounter::RTMLockingCounter) {
    1406       RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters();
    1407       if (rlc->nonzero()) {
    1408         tty->print_cr("%s", c->name());
    1409         rlc->print_on(tty);
    1410       }
    1411 #endif
    1412     }
    1413     c = c->next();
    1414   }
    1415   if (total_lock_count > 0) {
    1416     tty->print_cr("dynamic locks: %d", total_lock_count);
    1417     if (eliminated_lock_count) {
    1418       tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
    1419                     (int)(eliminated_lock_count * 100.0 / total_lock_count));
    1420     }
    1421   }
    1422 }
    1423
    1424 //
    1425 //  Allocate a new NamedCounter.  The JVMState is used to generate the
    1426 //  name which consists of method@line for the inlining tree.
    1427 //
    1428
    1429 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
    1430   int max_depth = youngest_jvms->depth();
    1431
    1432   // Visit scopes from youngest to oldest.
    1433   bool first = true;
    1434   stringStream st;
    1435   for (int depth = max_depth; depth >= 1; depth--) {
    1436     JVMState* jvms = youngest_jvms->of_depth(depth);
    1437     ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
    1438     if (!first) {
    1439       st.print(" ");
    1440     } else {
    1441       first = false;
    1442     }
    1443     int bci = jvms->bci();
    1444     if (bci < 0) bci = 0;
    1445     st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
    1446     // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
    1447   }
    1448   NamedCounter* c;
    1449   if (tag == NamedCounter::BiasedLockingCounter) {
    1450     c = new BiasedLockingNamedCounter(st.as_string());
    1451   } else if (tag == NamedCounter::RTMLockingCounter) {
    1452     c = new RTMLockingNamedCounter(st.as_string());
    1453   } else {
    1454     c = new NamedCounter(st.as_string(), tag);
    1455   }
    1456
    1457   // atomically add the new counter to the head of the list.  We only
    1458   // add counters so this is safe.
    1459   NamedCounter* head;
    1460   do {
    1461     c->set_next(NULL);
    1462     head = _named_counters;
    1463     c->set_next(head);
    1464   } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
    1465   return c;
    1466 }
    1467
    1468 //-----------------------------------------------------------------------------
    1469 // Non-product code
    1470 #ifndef PRODUCT
    1471
    1472 int trace_exception_counter = 0;
    1473 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
    1474   ttyLocker ttyl;
    1475   trace_exception_counter++;
    1476   tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
    1477   exception_oop->print_value();
    1478   tty->print(" in ");
    1479   CodeBlob* blob = CodeCache::find_blob(exception_pc);
    1480   if (blob->is_nmethod()) {
    1481     nmethod* nm = blob->as_nmethod_or_null();
    1482     nm->method()->print_value();
    1483   } else if (blob->is_runtime_stub()) {
    1484     tty->print("<runtime-stub>");
    1485   } else {
    1486     tty->print("<unknown>");
    1487   }
    1488   tty->print(" at " INTPTR_FORMAT,  p2i(exception_pc));
    1489   tty->print_cr("]");
    1490 }
    1491
    1492 #endif  // PRODUCT
    1493
    1494
    1495 # ifdef ENABLE_ZAP_DEAD_LOCALS
    1496 // Called from call sites in compiled code with oop maps (actually safepoints)
    1497 // Zaps dead locals in first java frame.
    1498 // Is entry because may need to lock to generate oop maps
    1499 // Currently, only used for compiler frames, but someday may be used
    1500 // for interpreter frames, too.
    1501
    1502 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
    1503
    1504 // avoid pointers to member funcs with these helpers
    1505 static bool is_java_frame(  frame* f) { return f->is_java_frame();   }
    1506 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
    1507
    1508
    1509 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
    1510                                                 bool (*is_this_the_right_frame_to_zap)(frame*)) {
    1511   assert(JavaThread::current() == thread, "is this needed?");
    1512
    1513   if ( !ZapDeadCompiledLocals )  return;
    1514
    1515   bool skip = false;
    1516
    1517        if ( ZapDeadCompiledLocalsFirst  ==  0  ) ; // nothing special
    1518   else if ( ZapDeadCompiledLocalsFirst  >  ZapDeadCompiledLocals_count )  skip = true;
    1519   else if ( ZapDeadCompiledLocalsFirst  == ZapDeadCompiledLocals_count )
    1520     warning("starting zapping after skipping");
    1521
    1522        if ( ZapDeadCompiledLocalsLast  ==  -1  ) ; // nothing special
    1523   else if ( ZapDeadCompiledLocalsLast  <   ZapDeadCompiledLocals_count )  skip = true;
    1524   else if ( ZapDeadCompiledLocalsLast  ==  ZapDeadCompiledLocals_count )
    1525     warning("about to zap last zap");
    1526
    1527   ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
    1528
    1529   if ( skip )  return;
    1530
    1531   // find java frame and zap it
    1532
    1533   for (StackFrameStream sfs(thread);  !sfs.is_done();  sfs.next()) {
    1534     if (is_this_the_right_frame_to_zap(sfs.current()) ) {
    1535       sfs.current()->zap_dead_locals(thread, sfs.register_map());
    1536       return;
    1537     }
    1538   }
    1539   warning("no frame found to zap in zap_dead_Java_locals_C");
    1540 }
    1541
    1542 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
    1543   zap_dead_java_or_native_locals(thread, is_java_frame);
    1544 JRT_END
    1545
    1546 // The following does not work because for one thing, the
    1547 // thread state is wrong; it expects java, but it is native.
    1548 // Also, the invariants in a native stub are different and
    1549 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
    1550 // in there.
    1551 // So for now, we do not zap in native stubs.
    1552
    1553 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
    1554   zap_dead_java_or_native_locals(thread, is_native_frame);
    1555 JRT_END
    1556
    1557 # endif
    --- EOF ---