jdk8-mips64-public/hotspot: src/share/vm/opto/runtime.cpp@f4f6ae481e1a

     1 /*

     2  * Copyright (c) 1998, 2012, 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  */

    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 #ifdef TARGET_ARCH_MODEL_x86_32

    72 # include "adfiles/ad_x86_32.hpp"

    73 #endif

    74 #ifdef TARGET_ARCH_MODEL_x86_64

    75 # include "adfiles/ad_x86_64.hpp"

    76 #endif

    77 #ifdef TARGET_ARCH_MODEL_sparc

    78 # include "adfiles/ad_sparc.hpp"

    79 #endif

    80 #ifdef TARGET_ARCH_MODEL_zero

    81 # include "adfiles/ad_zero.hpp"

    82 #endif

    83 #ifdef TARGET_ARCH_MODEL_arm

    84 # include "adfiles/ad_arm.hpp"

    85 #endif

    86 #ifdef TARGET_ARCH_MODEL_ppc_32

    87 # include "adfiles/ad_ppc_32.hpp"

    88 #endif

    89 #ifdef TARGET_ARCH_MODEL_ppc_64

    90 # include "adfiles/ad_ppc_64.hpp"

    91 #endif

    94 // For debugging purposes:

    95 //  To force FullGCALot inside a runtime function, add the following two lines

    96 //

    97 //  Universe::release_fullgc_alot_dummy();

    98 //  MarkSweep::invoke(0, "Debugging");

    99 //

   100 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000

   105 // Compiled code entry points

   106 address OptoRuntime::_new_instance_Java                           = NULL;

   107 address OptoRuntime::_new_array_Java                              = NULL;

   108 address OptoRuntime::_new_array_nozero_Java                       = NULL;

   109 address OptoRuntime::_multianewarray2_Java                        = NULL;

   110 address OptoRuntime::_multianewarray3_Java                        = NULL;

   111 address OptoRuntime::_multianewarray4_Java                        = NULL;

   112 address OptoRuntime::_multianewarray5_Java                        = NULL;

   113 address OptoRuntime::_multianewarrayN_Java                        = NULL;

   114 address OptoRuntime::_g1_wb_pre_Java                              = NULL;

   115 address OptoRuntime::_g1_wb_post_Java                             = NULL;

   116 address OptoRuntime::_vtable_must_compile_Java                    = NULL;

   117 address OptoRuntime::_complete_monitor_locking_Java               = NULL;

   118 address OptoRuntime::_rethrow_Java                                = NULL;

   120 address OptoRuntime::_slow_arraycopy_Java                         = NULL;

   121 address OptoRuntime::_register_finalizer_Java                     = NULL;

   123 # ifdef ENABLE_ZAP_DEAD_LOCALS

   124 address OptoRuntime::_zap_dead_Java_locals_Java                   = NULL;

   125 address OptoRuntime::_zap_dead_native_locals_Java                 = NULL;

   126 # endif

   128 ExceptionBlob* OptoRuntime::_exception_blob;

   130 // This should be called in an assertion at the start of OptoRuntime routines

   131 // which are entered from compiled code (all of them)

   132 #ifdef ASSERT

   133 static bool check_compiled_frame(JavaThread* thread) {

   134   assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");

   135   RegisterMap map(thread, false);

   136   frame caller = thread->last_frame().sender(&map);

   137   assert(caller.is_compiled_frame(), "not being called from compiled like code");

   138   return true;

   139 }

   140 #endif // ASSERT

   143 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \

   144   var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)

   146 void OptoRuntime::generate(ciEnv* env) {

   148   generate_exception_blob();

   150   // Note: tls: Means fetching the return oop out of the thread-local storage

   151   //

   152   //   variable/name                       type-function-gen              , runtime method                  ,fncy_jp, tls,save_args,retpc

   153   // -------------------------------------------------------------------------------------------------------------------------------

   154   gen(env, _new_instance_Java              , new_instance_Type            , new_instance_C                  ,    0 , true , false, false);

   155   gen(env, _new_array_Java                 , new_array_Type               , new_array_C                     ,    0 , true , false, false);

   156   gen(env, _new_array_nozero_Java          , new_array_Type               , new_array_nozero_C              ,    0 , true , false, false);

   157   gen(env, _multianewarray2_Java           , multianewarray2_Type         , multianewarray2_C               ,    0 , true , false, false);

   158   gen(env, _multianewarray3_Java           , multianewarray3_Type         , multianewarray3_C               ,    0 , true , false, false);

   159   gen(env, _multianewarray4_Java           , multianewarray4_Type         , multianewarray4_C               ,    0 , true , false, false);

   160   gen(env, _multianewarray5_Java           , multianewarray5_Type         , multianewarray5_C               ,    0 , true , false, false);

   161   gen(env, _multianewarrayN_Java           , multianewarrayN_Type         , multianewarrayN_C               ,    0 , true , false, false);

   162   gen(env, _g1_wb_pre_Java                 , g1_wb_pre_Type               , SharedRuntime::g1_wb_pre        ,    0 , false, false, false);

   163   gen(env, _g1_wb_post_Java                , g1_wb_post_Type              , SharedRuntime::g1_wb_post       ,    0 , false, false, false);

   164   gen(env, _complete_monitor_locking_Java  , complete_monitor_enter_Type  , SharedRuntime::complete_monitor_locking_C      ,    0 , false, false, false);

   165   gen(env, _rethrow_Java                   , rethrow_Type                 , rethrow_C                       ,    2 , true , false, true );

   167   gen(env, _slow_arraycopy_Java            , slow_arraycopy_Type          , SharedRuntime::slow_arraycopy_C ,    0 , false, false, false);

   168   gen(env, _register_finalizer_Java        , register_finalizer_Type      , register_finalizer              ,    0 , false, false, false);

   170 # ifdef ENABLE_ZAP_DEAD_LOCALS

   171   gen(env, _zap_dead_Java_locals_Java      , zap_dead_locals_Type         , zap_dead_Java_locals_C          ,    0 , false, true , false );

   172   gen(env, _zap_dead_native_locals_Java    , zap_dead_locals_Type         , zap_dead_native_locals_C        ,    0 , false, true , false );

   173 # endif

   175 }

   177 #undef gen

   180 // Helper method to do generation of RunTimeStub's

   181 address OptoRuntime::generate_stub( ciEnv* env,

   182                                     TypeFunc_generator gen, address C_function,

   183                                     const char *name, int is_fancy_jump,

   184                                     bool pass_tls,

   185                                     bool save_argument_registers,

   186                                     bool return_pc ) {

   187   ResourceMark rm;

   188   Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );

   189   return  C.stub_entry_point();

   190 }

   192 const char* OptoRuntime::stub_name(address entry) {

   193 #ifndef PRODUCT

   194   CodeBlob* cb = CodeCache::find_blob(entry);

   195   RuntimeStub* rs =(RuntimeStub *)cb;

   196   assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");

   197   return rs->name();

   198 #else

   199   // Fast implementation for product mode (maybe it should be inlined too)

   200   return "runtime stub";

   201 #endif

   202 }

   205 //=============================================================================

   206 // Opto compiler runtime routines

   207 //=============================================================================

   210 //=============================allocation======================================

   211 // We failed the fast-path allocation.  Now we need to do a scavenge or GC

   212 // and try allocation again.

   214 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {

   215   // After any safepoint, just before going back to compiled code,

   216   // we inform the GC that we will be doing initializing writes to

   217   // this object in the future without emitting card-marks, so

   218   // GC may take any compensating steps.

   219   // NOTE: Keep this code consistent with GraphKit::store_barrier.

   221   oop new_obj = thread->vm_result();

   222   if (new_obj == NULL)  return;

   224   assert(Universe::heap()->can_elide_tlab_store_barriers(),

   225          "compiler must check this first");

   226   // GC may decide to give back a safer copy of new_obj.

   227   new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);

   228   thread->set_vm_result(new_obj);

   229 }

   231 // object allocation

   232 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread))

   233   JRT_BLOCK;

   234 #ifndef PRODUCT

   235   SharedRuntime::_new_instance_ctr++;         // new instance requires GC

   236 #endif

   237   assert(check_compiled_frame(thread), "incorrect caller");

   239   // These checks are cheap to make and support reflective allocation.

   240   int lh = klass->layout_helper();

   241   if (Klass::layout_helper_needs_slow_path(lh)

   242       || !InstanceKlass::cast(klass)->is_initialized()) {

   243     KlassHandle kh(THREAD, klass);

   244     kh->check_valid_for_instantiation(false, THREAD);

   245     if (!HAS_PENDING_EXCEPTION) {

   246       InstanceKlass::cast(kh())->initialize(THREAD);

   247     }

   248     if (!HAS_PENDING_EXCEPTION) {

   249       klass = kh();

   250     } else {

   251       klass = NULL;

   252     }

   253   }

   255   if (klass != NULL) {

   256     // Scavenge and allocate an instance.

   257     oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD);

   258     thread->set_vm_result(result);

   260     // Pass oops back through thread local storage.  Our apparent type to Java

   261     // is that we return an oop, but we can block on exit from this routine and

   262     // a GC can trash the oop in C's return register.  The generated stub will

   263     // fetch the oop from TLS after any possible GC.

   264   }

   266   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   267   JRT_BLOCK_END;

   269   if (GraphKit::use_ReduceInitialCardMarks()) {

   270     // inform GC that we won't do card marks for initializing writes.

   271     new_store_pre_barrier(thread);

   272   }

   273 JRT_END

   276 // array allocation

   277 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread))

   278   JRT_BLOCK;

   279 #ifndef PRODUCT

   280   SharedRuntime::_new_array_ctr++;            // new array requires GC

   281 #endif

   282   assert(check_compiled_frame(thread), "incorrect caller");

   284   // Scavenge and allocate an instance.

   285   oop result;

   287   if (array_type->oop_is_typeArray()) {

   288     // The oopFactory likes to work with the element type.

   289     // (We could bypass the oopFactory, since it doesn't add much value.)

   290     BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();

   291     result = oopFactory::new_typeArray(elem_type, len, THREAD);

   292   } else {

   293     // Although the oopFactory likes to work with the elem_type,

   294     // the compiler prefers the array_type, since it must already have

   295     // that latter value in hand for the fast path.

   296     Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass();

   297     result = oopFactory::new_objArray(elem_type, len, THREAD);

   298   }

   300   // Pass oops back through thread local storage.  Our apparent type to Java

   301   // is that we return an oop, but we can block on exit from this routine and

   302   // a GC can trash the oop in C's return register.  The generated stub will

   303   // fetch the oop from TLS after any possible GC.

   304   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   305   thread->set_vm_result(result);

   306   JRT_BLOCK_END;

   308   if (GraphKit::use_ReduceInitialCardMarks()) {

   309     // inform GC that we won't do card marks for initializing writes.

   310     new_store_pre_barrier(thread);

   311   }

   312 JRT_END

   314 // array allocation without zeroing

   315 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread))

   316   JRT_BLOCK;

   317 #ifndef PRODUCT

   318   SharedRuntime::_new_array_ctr++;            // new array requires GC

   319 #endif

   320   assert(check_compiled_frame(thread), "incorrect caller");

   322   // Scavenge and allocate an instance.

   323   oop result;

   325   assert(array_type->oop_is_typeArray(), "should be called only for type array");

   326   // The oopFactory likes to work with the element type.

   327   BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();

   328   result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);

   330   // Pass oops back through thread local storage.  Our apparent type to Java

   331   // is that we return an oop, but we can block on exit from this routine and

   332   // a GC can trash the oop in C's return register.  The generated stub will

   333   // fetch the oop from TLS after any possible GC.

   334   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   335   thread->set_vm_result(result);

   336   JRT_BLOCK_END;

   338   if (GraphKit::use_ReduceInitialCardMarks()) {

   339     // inform GC that we won't do card marks for initializing writes.

   340     new_store_pre_barrier(thread);

   341   }

   343   oop result = thread->vm_result();

   344   if ((len > 0) && (result != NULL) &&

   345       is_deoptimized_caller_frame(thread)) {

   346     // Zero array here if the caller is deoptimized.

   347     int size = ((typeArrayOop)result)->object_size();

   348     BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type();

   349     const size_t hs = arrayOopDesc::header_size(elem_type);

   350     // Align to next 8 bytes to avoid trashing arrays's length.

   351     const size_t aligned_hs = align_object_offset(hs);

   352     HeapWord* obj = (HeapWord*)result;

   353     if (aligned_hs > hs) {

   354       Copy::zero_to_words(obj+hs, aligned_hs-hs);

   355     }

   356     // Optimized zeroing.

   357     Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs);

   358   }

   360 JRT_END

   362 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.

   364 // multianewarray for 2 dimensions

   365 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread))

   366 #ifndef PRODUCT

   367   SharedRuntime::_multi2_ctr++;                // multianewarray for 1 dimension

   368 #endif

   369   assert(check_compiled_frame(thread), "incorrect caller");

   370   assert(elem_type->is_klass(), "not a class");

   371   jint dims[2];

   372   dims[0] = len1;

   373   dims[1] = len2;

   374   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);

   375   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   376   thread->set_vm_result(obj);

   377 JRT_END

   379 // multianewarray for 3 dimensions

   380 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread))

   381 #ifndef PRODUCT

   382   SharedRuntime::_multi3_ctr++;                // multianewarray for 1 dimension

   383 #endif

   384   assert(check_compiled_frame(thread), "incorrect caller");

   385   assert(elem_type->is_klass(), "not a class");

   386   jint dims[3];

   387   dims[0] = len1;

   388   dims[1] = len2;

   389   dims[2] = len3;

   390   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);

   391   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   392   thread->set_vm_result(obj);

   393 JRT_END

   395 // multianewarray for 4 dimensions

   396 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))

   397 #ifndef PRODUCT

   398   SharedRuntime::_multi4_ctr++;                // multianewarray for 1 dimension

   399 #endif

   400   assert(check_compiled_frame(thread), "incorrect caller");

   401   assert(elem_type->is_klass(), "not a class");

   402   jint dims[4];

   403   dims[0] = len1;

   404   dims[1] = len2;

   405   dims[2] = len3;

   406   dims[3] = len4;

   407   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);

   408   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   409   thread->set_vm_result(obj);

   410 JRT_END

   412 // multianewarray for 5 dimensions

   413 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))

   414 #ifndef PRODUCT

   415   SharedRuntime::_multi5_ctr++;                // multianewarray for 1 dimension

   416 #endif

   417   assert(check_compiled_frame(thread), "incorrect caller");

   418   assert(elem_type->is_klass(), "not a class");

   419   jint dims[5];

   420   dims[0] = len1;

   421   dims[1] = len2;

   422   dims[2] = len3;

   423   dims[3] = len4;

   424   dims[4] = len5;

   425   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);

   426   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   427   thread->set_vm_result(obj);

   428 JRT_END

   430 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread))

   431   assert(check_compiled_frame(thread), "incorrect caller");

   432   assert(elem_type->is_klass(), "not a class");

   433   assert(oop(dims)->is_typeArray(), "not an array");

   435   ResourceMark rm;

   436   jint len = dims->length();

   437   assert(len > 0, "Dimensions array should contain data");

   438   jint *j_dims = typeArrayOop(dims)->int_at_addr(0);

   439   jint *c_dims = NEW_RESOURCE_ARRAY(jint, len);

   440   Copy::conjoint_jints_atomic(j_dims, c_dims, len);

   442   oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD);

   443   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);

   444   thread->set_vm_result(obj);

   445 JRT_END

   448 const TypeFunc *OptoRuntime::new_instance_Type() {

   449   // create input type (domain)

   450   const Type **fields = TypeTuple::fields(1);

   451   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated

   452   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);

   454   // create result type (range)

   455   fields = TypeTuple::fields(1);

   456   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop

   458   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

   460   return TypeFunc::make(domain, range);

   461 }

   464 const TypeFunc *OptoRuntime::athrow_Type() {

   465   // create input type (domain)

   466   const Type **fields = TypeTuple::fields(1);

   467   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated

   468   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);

   470   // create result type (range)

   471   fields = TypeTuple::fields(0);

   473   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);

   475   return TypeFunc::make(domain, range);

   476 }

   479 const TypeFunc *OptoRuntime::new_array_Type() {

   480   // create input type (domain)

   481   const Type **fields = TypeTuple::fields(2);

   482   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass

   483   fields[TypeFunc::Parms+1] = TypeInt::INT;       // array size

   484   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   486   // create result type (range)

   487   fields = TypeTuple::fields(1);

   488   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop

   490   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

   492   return TypeFunc::make(domain, range);

   493 }

   495 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {

   496   // create input type (domain)

   497   const int nargs = ndim + 1;

   498   const Type **fields = TypeTuple::fields(nargs);

   499   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass

   500   for( int i = 1; i < nargs; i++ )

   501     fields[TypeFunc::Parms + i] = TypeInt::INT;       // array size

   502   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);

   504   // create result type (range)

   505   fields = TypeTuple::fields(1);

   506   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop

   507   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

   509   return TypeFunc::make(domain, range);

   510 }

   512 const TypeFunc *OptoRuntime::multianewarray2_Type() {

   513   return multianewarray_Type(2);

   514 }

   516 const TypeFunc *OptoRuntime::multianewarray3_Type() {

   517   return multianewarray_Type(3);

   518 }

   520 const TypeFunc *OptoRuntime::multianewarray4_Type() {

   521   return multianewarray_Type(4);

   522 }

   524 const TypeFunc *OptoRuntime::multianewarray5_Type() {

   525   return multianewarray_Type(5);

   526 }

   528 const TypeFunc *OptoRuntime::multianewarrayN_Type() {

   529   // create input type (domain)

   530   const Type **fields = TypeTuple::fields(2);

   531   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;   // element klass

   532   fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;   // array of dim sizes

   533   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   535   // create result type (range)

   536   fields = TypeTuple::fields(1);

   537   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop

   538   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

   540   return TypeFunc::make(domain, range);

   541 }

   543 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {

   544   const Type **fields = TypeTuple::fields(2);

   545   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value

   546   fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread

   547   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   549   // create result type (range)

   550   fields = TypeTuple::fields(0);

   551   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);

   553   return TypeFunc::make(domain, range);

   554 }

   556 const TypeFunc *OptoRuntime::g1_wb_post_Type() {

   558   const Type **fields = TypeTuple::fields(2);

   559   fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL;  // Card addr

   560   fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL;  // thread

   561   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   563   // create result type (range)

   564   fields = TypeTuple::fields(0);

   565   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);

   567   return TypeFunc::make(domain, range);

   568 }

   570 const TypeFunc *OptoRuntime::uncommon_trap_Type() {

   571   // create input type (domain)

   572   const Type **fields = TypeTuple::fields(1);

   573   // Symbol* name of class to be loaded

   574   fields[TypeFunc::Parms+0] = TypeInt::INT;

   575   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);

   577   // create result type (range)

   578   fields = TypeTuple::fields(0);

   579   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);

   581   return TypeFunc::make(domain, range);

   582 }

   584 # ifdef ENABLE_ZAP_DEAD_LOCALS

   585 // Type used for stub generation for zap_dead_locals.

   586 // No inputs or outputs

   587 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {

   588   // create input type (domain)

   589   const Type **fields = TypeTuple::fields(0);

   590   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);

   592   // create result type (range)

   593   fields = TypeTuple::fields(0);

   594   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);

   596   return TypeFunc::make(domain,range);

   597 }

   598 # endif

   601 //-----------------------------------------------------------------------------

   602 // Monitor Handling

   603 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {

   604   // create input type (domain)

   605   const Type **fields = TypeTuple::fields(2);

   606   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // Object to be Locked

   607   fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM;   // Address of stack location for lock

   608   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);

   610   // create result type (range)

   611   fields = TypeTuple::fields(0);

   613   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);

   615   return TypeFunc::make(domain,range);

   616 }

   619 //-----------------------------------------------------------------------------

   620 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {

   621   // create input type (domain)

   622   const Type **fields = TypeTuple::fields(2);

   623   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // Object to be Locked

   624   fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM;   // Address of stack location for lock

   625   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);

   627   // create result type (range)

   628   fields = TypeTuple::fields(0);

   630   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);

   632   return TypeFunc::make(domain,range);

   633 }

   635 const TypeFunc* OptoRuntime::flush_windows_Type() {

   636   // create input type (domain)

   637   const Type** fields = TypeTuple::fields(1);

   638   fields[TypeFunc::Parms+0] = NULL; // void

   639   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);

   641   // create result type

   642   fields = TypeTuple::fields(1);

   643   fields[TypeFunc::Parms+0] = NULL; // void

   644   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);

   646   return TypeFunc::make(domain, range);

   647 }

   649 const TypeFunc* OptoRuntime::l2f_Type() {

   650   // create input type (domain)

   651   const Type **fields = TypeTuple::fields(2);

   652   fields[TypeFunc::Parms+0] = TypeLong::LONG;

   653   fields[TypeFunc::Parms+1] = Type::HALF;

   654   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   656   // create result type (range)

   657   fields = TypeTuple::fields(1);

   658   fields[TypeFunc::Parms+0] = Type::FLOAT;

   659   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

   661   return TypeFunc::make(domain, range);

   662 }

   664 const TypeFunc* OptoRuntime::modf_Type() {

   665   const Type **fields = TypeTuple::fields(2);

   666   fields[TypeFunc::Parms+0] = Type::FLOAT;

   667   fields[TypeFunc::Parms+1] = Type::FLOAT;

   668   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   670   // create result type (range)

   671   fields = TypeTuple::fields(1);

   672   fields[TypeFunc::Parms+0] = Type::FLOAT;

   674   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

   676   return TypeFunc::make(domain, range);

   677 }

   679 const TypeFunc *OptoRuntime::Math_D_D_Type() {

   680   // create input type (domain)

   681   const Type **fields = TypeTuple::fields(2);

   682   // Symbol* name of class to be loaded

   683   fields[TypeFunc::Parms+0] = Type::DOUBLE;

   684   fields[TypeFunc::Parms+1] = Type::HALF;

   685   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   687   // create result type (range)

   688   fields = TypeTuple::fields(2);

   689   fields[TypeFunc::Parms+0] = Type::DOUBLE;

   690   fields[TypeFunc::Parms+1] = Type::HALF;

   691   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);

   693   return TypeFunc::make(domain, range);

   694 }

   696 const TypeFunc* OptoRuntime::Math_DD_D_Type() {

   697   const Type **fields = TypeTuple::fields(4);

   698   fields[TypeFunc::Parms+0] = Type::DOUBLE;

   699   fields[TypeFunc::Parms+1] = Type::HALF;

   700   fields[TypeFunc::Parms+2] = Type::DOUBLE;

   701   fields[TypeFunc::Parms+3] = Type::HALF;

   702   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);

   704   // create result type (range)

   705   fields = TypeTuple::fields(2);

   706   fields[TypeFunc::Parms+0] = Type::DOUBLE;

   707   fields[TypeFunc::Parms+1] = Type::HALF;

   708   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);

   710   return TypeFunc::make(domain, range);

   711 }

   713 //-------------- currentTimeMillis, currentTimeNanos, etc

   715 const TypeFunc* OptoRuntime::void_long_Type() {

   716   // create input type (domain)

   717   const Type **fields = TypeTuple::fields(0);

   718   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);

   720   // create result type (range)

   721   fields = TypeTuple::fields(2);

   722   fields[TypeFunc::Parms+0] = TypeLong::LONG;

   723   fields[TypeFunc::Parms+1] = Type::HALF;

   724   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);

   726   return TypeFunc::make(domain, range);

   727 }

   729 // arraycopy stub variations:

   730 enum ArrayCopyType {

   731   ac_fast,                      // void(ptr, ptr, size_t)

   732   ac_checkcast,                 //  int(ptr, ptr, size_t, size_t, ptr)

   733   ac_slow,                      // void(ptr, int, ptr, int, int)

   734   ac_generic                    //  int(ptr, int, ptr, int, int)

   735 };

   737 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {

   738   // create input type (domain)

   739   int num_args      = (act == ac_fast ? 3 : 5);

   740   int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);

   741   int argcnt = num_args;

   742   LP64_ONLY(argcnt += num_size_args); // halfwords for lengths

   743   const Type** fields = TypeTuple::fields(argcnt);

   744   int argp = TypeFunc::Parms;

   745   fields[argp++] = TypePtr::NOTNULL;    // src

   746   if (num_size_args == 0) {

   747     fields[argp++] = TypeInt::INT;      // src_pos

   748   }

   749   fields[argp++] = TypePtr::NOTNULL;    // dest

   750   if (num_size_args == 0) {

   751     fields[argp++] = TypeInt::INT;      // dest_pos

   752     fields[argp++] = TypeInt::INT;      // length

   753   }

   754   while (num_size_args-- > 0) {

   755     fields[argp++] = TypeX_X;               // size in whatevers (size_t)

   756     LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length

   757   }

   758   if (act == ac_checkcast) {

   759     fields[argp++] = TypePtr::NOTNULL;  // super_klass

   760   }

   761   assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");

   762   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);

   764   // create result type if needed

   765   int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);

   766   fields = TypeTuple::fields(1);

   767   if (retcnt == 0)

   768     fields[TypeFunc::Parms+0] = NULL; // void

   769   else

   770     fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed

   771   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);

   772   return TypeFunc::make(domain, range);

   773 }

   775 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {

   776   // This signature is simple:  Two base pointers and a size_t.

   777   return make_arraycopy_Type(ac_fast);

   778 }

   780 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {

   781   // An extension of fast_arraycopy_Type which adds type checking.

   782   return make_arraycopy_Type(ac_checkcast);

   783 }

   785 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {

   786   // This signature is exactly the same as System.arraycopy.

   787   // There are no intptr_t (int/long) arguments.

   788   return make_arraycopy_Type(ac_slow);

   789 }

   791 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {

   792   // This signature is like System.arraycopy, except that it returns status.

   793   return make_arraycopy_Type(ac_generic);

   794 }

   797 const TypeFunc* OptoRuntime::array_fill_Type() {

   798   // create input type (domain): pointer, int, size_t

   799   const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1));

   800   int argp = TypeFunc::Parms;

   801   fields[argp++] = TypePtr::NOTNULL;

   802   fields[argp++] = TypeInt::INT;

   803   fields[argp++] = TypeX_X;               // size in whatevers (size_t)

   804   LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length

   805   const TypeTuple *domain = TypeTuple::make(argp, fields);

   807   // create result type

   808   fields = TypeTuple::fields(1);

   809   fields[TypeFunc::Parms+0] = NULL; // void

   810   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);

   812   return TypeFunc::make(domain, range);

   813 }

   815 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant)

   816 const TypeFunc* OptoRuntime::aescrypt_block_Type() {

   817   // create input type (domain)

   818   int num_args      = 3;

   819   int argcnt = num_args;

   820   const Type** fields = TypeTuple::fields(argcnt);

   821   int argp = TypeFunc::Parms;

   822   fields[argp++] = TypePtr::NOTNULL;    // src

   823   fields[argp++] = TypePtr::NOTNULL;    // dest

   824   fields[argp++] = TypePtr::NOTNULL;    // k array

   825   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");

   826   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);

   828   // no result type needed

   829   fields = TypeTuple::fields(1);

   830   fields[TypeFunc::Parms+0] = NULL; // void

   831   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);

   832   return TypeFunc::make(domain, range);

   833 }

   835 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void

   836 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() {

   837   // create input type (domain)

   838   int num_args      = 5;

   839   int argcnt = num_args;

   840   const Type** fields = TypeTuple::fields(argcnt);

   841   int argp = TypeFunc::Parms;

   842   fields[argp++] = TypePtr::NOTNULL;    // src

   843   fields[argp++] = TypePtr::NOTNULL;    // dest

   844   fields[argp++] = TypePtr::NOTNULL;    // k array

   845   fields[argp++] = TypePtr::NOTNULL;    // r array

   846   fields[argp++] = TypeInt::INT;        // src len

   847   assert(argp == TypeFunc::Parms+argcnt, "correct decoding");

   848   const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);

   850   // no result type needed

   851   fields = TypeTuple::fields(1);

   852   fields[TypeFunc::Parms+0] = NULL; // void

   853   const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields);

   854   return TypeFunc::make(domain, range);

   855 }

   857 //------------- Interpreter state access for on stack replacement

   858 const TypeFunc* OptoRuntime::osr_end_Type() {

   859   // create input type (domain)

   860   const Type **fields = TypeTuple::fields(1);

   861   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf

   862   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);

   864   // create result type

   865   fields = TypeTuple::fields(1);

   866   // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop

   867   fields[TypeFunc::Parms+0] = NULL; // void

   868   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);

   869   return TypeFunc::make(domain, range);

   870 }

   872 //-------------- methodData update helpers

   874 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {

   875   // create input type (domain)

   876   const Type **fields = TypeTuple::fields(2);

   877   fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL;    // methodData pointer

   878   fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM;    // receiver oop

   879   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);

   881   // create result type

   882   fields = TypeTuple::fields(1);

   883   fields[TypeFunc::Parms+0] = NULL; // void

   884   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);

   885   return TypeFunc::make(domain,range);

   886 }

   888 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))

   889   if (receiver == NULL) return;

   890   Klass* receiver_klass = receiver->klass();

   892   intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();

   893   int empty_row = -1;           // free row, if any is encountered

   895   // ReceiverTypeData* vc = new ReceiverTypeData(mdp);

   896   for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {

   897     // if (vc->receiver(row) == receiver_klass)

   898     int receiver_off = ReceiverTypeData::receiver_cell_index(row);

   899     intptr_t row_recv = *(mdp + receiver_off);

   900     if (row_recv == (intptr_t) receiver_klass) {

   901       // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);

   902       int count_off = ReceiverTypeData::receiver_count_cell_index(row);

   903       *(mdp + count_off) += DataLayout::counter_increment;

   904       return;

   905     } else if (row_recv == 0) {

   906       // else if (vc->receiver(row) == NULL)

   907       empty_row = (int) row;

   908     }

   909   }

   911   if (empty_row != -1) {

   912     int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);

   913     // vc->set_receiver(empty_row, receiver_klass);

   914     *(mdp + receiver_off) = (intptr_t) receiver_klass;

   915     // vc->set_receiver_count(empty_row, DataLayout::counter_increment);

   916     int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);

   917     *(mdp + count_off) = DataLayout::counter_increment;

   918   } else {

   919     // Receiver did not match any saved receiver and there is no empty row for it.

   920     // Increment total counter to indicate polymorphic case.

   921     intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));

   922     *count_p += DataLayout::counter_increment;

   923   }

   924 JRT_END

   926 //-------------------------------------------------------------------------------------

   927 // register policy

   929 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {

   930   assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");

   931   switch (register_save_policy[reg]) {

   932     case 'C': return false; //SOC

   933     case 'E': return true ; //SOE

   934     case 'N': return false; //NS

   935     case 'A': return false; //AS

   936   }

   937   ShouldNotReachHere();

   938   return false;

   939 }

   941 //-----------------------------------------------------------------------

   942 // Exceptions

   943 //

   945 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;

   947 // The method is an entry that is always called by a C++ method not

   948 // directly from compiled code. Compiled code will call the C++ method following.

   949 // We can't allow async exception to be installed during  exception processing.

   950 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))

   952   // Do not confuse exception_oop with pending_exception. The exception_oop

   953   // is only used to pass arguments into the method. Not for general

   954   // exception handling.  DO NOT CHANGE IT to use pending_exception, since

   955   // the runtime stubs checks this on exit.

   956   assert(thread->exception_oop() != NULL, "exception oop is found");

   957   address handler_address = NULL;

   959   Handle exception(thread, thread->exception_oop());

   961   if (TraceExceptions) {

   962     trace_exception(exception(), thread->exception_pc(), "");

   963   }

   964   // for AbortVMOnException flag

   965   NOT_PRODUCT(Exceptions::debug_check_abort(exception));

   967   #ifdef ASSERT

   968     if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {

   969       // should throw an exception here

   970       ShouldNotReachHere();

   971     }

   972   #endif

   975   // new exception handling: this method is entered only from adapters

   976   // exceptions from compiled java methods are handled in compiled code

   977   // using rethrow node

   979   address pc = thread->exception_pc();

   980   nm = CodeCache::find_nmethod(pc);

   981   assert(nm != NULL, "No NMethod found");

   982   if (nm->is_native_method()) {

   983     fatal("Native method should not have path to exception handling");

   984   } else {

   985     // we are switching to old paradigm: search for exception handler in caller_frame

   986     // instead in exception handler of caller_frame.sender()

   988     if (JvmtiExport::can_post_on_exceptions()) {

   989       // "Full-speed catching" is not necessary here,

   990       // since we're notifying the VM on every catch.

   991       // Force deoptimization and the rest of the lookup

   992       // will be fine.

   993       deoptimize_caller_frame(thread);

   994     }

   996     // Check the stack guard pages.  If enabled, look for handler in this frame;

   997     // otherwise, forcibly unwind the frame.

   998     //

   999     // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.

  1000     bool force_unwind = !thread->reguard_stack();

  1001     bool deopting = false;

  1002     if (nm->is_deopt_pc(pc)) {

  1003       deopting = true;

  1004       RegisterMap map(thread, false);

  1005       frame deoptee = thread->last_frame().sender(&map);

  1006       assert(deoptee.is_deoptimized_frame(), "must be deopted");

  1007       // Adjust the pc back to the original throwing pc

  1008       pc = deoptee.pc();

  1009     }

  1011     // If we are forcing an unwind because of stack overflow then deopt is

  1012     // irrelevant since we are throwing the frame away anyway.

  1014     if (deopting && !force_unwind) {

  1015       handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();

  1016     } else {

  1018       handler_address =

  1019         force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);

  1021       if (handler_address == NULL) {

  1022         Handle original_exception(thread, exception());

  1023         handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);

  1024         assert (handler_address != NULL, "must have compiled handler");

  1025         // Update the exception cache only when the unwind was not forced

  1026         // and there didn't happen another exception during the computation of the

  1027         // compiled exception handler.

  1028         if (!force_unwind && original_exception() == exception()) {

  1029           nm->add_handler_for_exception_and_pc(exception,pc,handler_address);

  1030         }

  1031       } else {

  1032         assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");

  1033       }

  1034     }

  1036     thread->set_exception_pc(pc);

  1037     thread->set_exception_handler_pc(handler_address);

  1039     // Check if the exception PC is a MethodHandle call site.

  1040     thread->set_is_method_handle_return(nm->is_method_handle_return(pc));

  1041   }

  1043   // Restore correct return pc.  Was saved above.

  1044   thread->set_exception_oop(exception());

  1045   return handler_address;

  1047 JRT_END

  1049 // We are entering here from exception_blob

  1050 // If there is a compiled exception handler in this method, we will continue there;

  1051 // otherwise we will unwind the stack and continue at the caller of top frame method

  1052 // Note we enter without the usual JRT wrapper. We will call a helper routine that

  1053 // will do the normal VM entry. We do it this way so that we can see if the nmethod

  1054 // we looked up the handler for has been deoptimized in the meantime. If it has been

  1055 // we must not use the handler and instead return the deopt blob.

  1056 address OptoRuntime::handle_exception_C(JavaThread* thread) {

  1057 //

  1058 // We are in Java not VM and in debug mode we have a NoHandleMark

  1059 //

  1060 #ifndef PRODUCT

  1061   SharedRuntime::_find_handler_ctr++;          // find exception handler

  1062 #endif

  1063   debug_only(NoHandleMark __hm;)

  1064   nmethod* nm = NULL;

  1065   address handler_address = NULL;

  1066   {

  1067     // Enter the VM

  1069     ResetNoHandleMark rnhm;

  1070     handler_address = handle_exception_C_helper(thread, nm);

  1071   }

  1073   // Back in java: Use no oops, DON'T safepoint

  1075   // Now check to see if the handler we are returning is in a now

  1076   // deoptimized frame

  1078   if (nm != NULL) {

  1079     RegisterMap map(thread, false);

  1080     frame caller = thread->last_frame().sender(&map);

  1081 #ifdef ASSERT

  1082     assert(caller.is_compiled_frame(), "must be");

  1083 #endif // ASSERT

  1084     if (caller.is_deoptimized_frame()) {

  1085       handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();

  1086     }

  1087   }

  1088   return handler_address;

  1089 }

  1091 //------------------------------rethrow----------------------------------------

  1092 // We get here after compiled code has executed a 'RethrowNode'.  The callee

  1093 // is either throwing or rethrowing an exception.  The callee-save registers

  1094 // have been restored, synchronized objects have been unlocked and the callee

  1095 // stack frame has been removed.  The return address was passed in.

  1096 // Exception oop is passed as the 1st argument.  This routine is then called

  1097 // from the stub.  On exit, we know where to jump in the caller's code.

  1098 // After this C code exits, the stub will pop his frame and end in a jump

  1099 // (instead of a return).  We enter the caller's default handler.

  1100 //

  1101 // This must be JRT_LEAF:

  1102 //     - caller will not change its state as we cannot block on exit,

  1103 //       therefore raw_exception_handler_for_return_address is all it takes

  1104 //       to handle deoptimized blobs

  1105 //

  1106 // However, there needs to be a safepoint check in the middle!  So compiled

  1107 // safepoints are completely watertight.

  1108 //

  1109 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.

  1110 //

  1111 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*

  1112 //

  1113 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {

  1114 #ifndef PRODUCT

  1115   SharedRuntime::_rethrow_ctr++;               // count rethrows

  1116 #endif

  1117   assert (exception != NULL, "should have thrown a NULLPointerException");

  1118 #ifdef ASSERT

  1119   if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {

  1120     // should throw an exception here

  1121     ShouldNotReachHere();

  1122   }

  1123 #endif

  1125   thread->set_vm_result(exception);

  1126   // Frame not compiled (handles deoptimization blob)

  1127   return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);

  1128 }

  1131 const TypeFunc *OptoRuntime::rethrow_Type() {

  1132   // create input type (domain)

  1133   const Type **fields = TypeTuple::fields(1);

  1134   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop

  1135   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);

  1137   // create result type (range)

  1138   fields = TypeTuple::fields(1);

  1139   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop

  1140   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);

  1142   return TypeFunc::make(domain, range);

  1143 }

  1146 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {

  1147   // Deoptimize the caller before continuing, as the compiled

  1148   // exception handler table may not be valid.

  1149   if (!StressCompiledExceptionHandlers && doit) {

  1150     deoptimize_caller_frame(thread);

  1151   }

  1152 }

  1154 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) {

  1155   // Called from within the owner thread, so no need for safepoint

  1156   RegisterMap reg_map(thread);

  1157   frame stub_frame = thread->last_frame();

  1158   assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");

  1159   frame caller_frame = stub_frame.sender(&reg_map);

  1161   // Deoptimize the caller frame.

  1162   Deoptimization::deoptimize_frame(thread, caller_frame.id());

  1163 }

  1166 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) {

  1167   // Called from within the owner thread, so no need for safepoint

  1168   RegisterMap reg_map(thread);

  1169   frame stub_frame = thread->last_frame();

  1170   assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");

  1171   frame caller_frame = stub_frame.sender(&reg_map);

  1172   return caller_frame.is_deoptimized_frame();

  1173 }

  1176 const TypeFunc *OptoRuntime::register_finalizer_Type() {

  1177   // create input type (domain)

  1178   const Type **fields = TypeTuple::fields(1);

  1179   fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL;  // oop;          Receiver

  1180   // // The JavaThread* is passed to each routine as the last argument

  1181   // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL;  // JavaThread *; Executing thread

  1182   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);

  1184   // create result type (range)

  1185   fields = TypeTuple::fields(0);

  1187   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);

  1189   return TypeFunc::make(domain,range);

  1190 }

  1193 //-----------------------------------------------------------------------------

  1194 // Dtrace support.  entry and exit probes have the same signature

  1195 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {

  1196   // create input type (domain)

  1197   const Type **fields = TypeTuple::fields(2);

  1198   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage

  1199   fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM;  // Method*;    Method we are entering

  1200   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);

  1202   // create result type (range)

  1203   fields = TypeTuple::fields(0);

  1205   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);

  1207   return TypeFunc::make(domain,range);

  1208 }

  1210 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {

  1211   // create input type (domain)

  1212   const Type **fields = TypeTuple::fields(2);

  1213   fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage

  1214   fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL;  // oop;    newly allocated object

  1216   const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);

  1218   // create result type (range)

  1219   fields = TypeTuple::fields(0);

  1221   const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);

  1223   return TypeFunc::make(domain,range);

  1224 }

  1227 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))

  1228   assert(obj->is_oop(), "must be a valid oop");

  1229   assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");

  1230   InstanceKlass::register_finalizer(instanceOop(obj), CHECK);

  1231 JRT_END

  1233 //-----------------------------------------------------------------------------

  1235 NamedCounter * volatile OptoRuntime::_named_counters = NULL;

  1237 //

  1238 // dump the collected NamedCounters.

  1239 //

  1240 void OptoRuntime::print_named_counters() {

  1241   int total_lock_count = 0;

  1242   int eliminated_lock_count = 0;

  1244   NamedCounter* c = _named_counters;

  1245   while (c) {

  1246     if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {

  1247       int count = c->count();

  1248       if (count > 0) {

  1249         bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;

  1250         if (Verbose) {

  1251           tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");

  1252         }

  1253         total_lock_count += count;

  1254         if (eliminated) {

  1255           eliminated_lock_count += count;

  1256         }

  1257       }

  1258     } else if (c->tag() == NamedCounter::BiasedLockingCounter) {

  1259       BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();

  1260       if (blc->nonzero()) {

  1261         tty->print_cr("%s", c->name());

  1262         blc->print_on(tty);

  1263       }

  1264     }

  1265     c = c->next();

  1266   }

  1267   if (total_lock_count > 0) {

  1268     tty->print_cr("dynamic locks: %d", total_lock_count);

  1269     if (eliminated_lock_count) {

  1270       tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,

  1271                     (int)(eliminated_lock_count * 100.0 / total_lock_count));

  1272     }

  1273   }

  1274 }

  1276 //

  1277 //  Allocate a new NamedCounter.  The JVMState is used to generate the

  1278 //  name which consists of method@line for the inlining tree.

  1279 //

  1281 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {

  1282   int max_depth = youngest_jvms->depth();

  1284   // Visit scopes from youngest to oldest.

  1285   bool first = true;

  1286   stringStream st;

  1287   for (int depth = max_depth; depth >= 1; depth--) {

  1288     JVMState* jvms = youngest_jvms->of_depth(depth);

  1289     ciMethod* m = jvms->has_method() ? jvms->method() : NULL;

  1290     if (!first) {

  1291       st.print(" ");

  1292     } else {

  1293       first = false;

  1294     }

  1295     int bci = jvms->bci();

  1296     if (bci < 0) bci = 0;

  1297     st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);

  1298     // To print linenumbers instead of bci use: m->line_number_from_bci(bci)

  1299   }

  1300   NamedCounter* c;

  1301   if (tag == NamedCounter::BiasedLockingCounter) {

  1302     c = new BiasedLockingNamedCounter(strdup(st.as_string()));

  1303   } else {

  1304     c = new NamedCounter(strdup(st.as_string()), tag);

  1305   }

  1307   // atomically add the new counter to the head of the list.  We only

  1308   // add counters so this is safe.

  1309   NamedCounter* head;

  1310   do {

  1311     head = _named_counters;

  1312     c->set_next(head);

  1313   } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);

  1314   return c;

  1315 }

  1317 //-----------------------------------------------------------------------------

  1318 // Non-product code

  1319 #ifndef PRODUCT

  1321 int trace_exception_counter = 0;

  1322 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {

  1323   ttyLocker ttyl;

  1324   trace_exception_counter++;

  1325   tty->print("%d [Exception (%s): ", trace_exception_counter, msg);

  1326   exception_oop->print_value();

  1327   tty->print(" in ");

  1328   CodeBlob* blob = CodeCache::find_blob(exception_pc);

  1329   if (blob->is_nmethod()) {

  1330     ((nmethod*)blob)->method()->print_value();

  1331   } else if (blob->is_runtime_stub()) {

  1332     tty->print("<runtime-stub>");

  1333   } else {

  1334     tty->print("<unknown>");

  1335   }

  1336   tty->print(" at " INTPTR_FORMAT,  exception_pc);

  1337   tty->print_cr("]");

  1338 }

  1340 #endif  // PRODUCT

  1343 # ifdef ENABLE_ZAP_DEAD_LOCALS

  1344 // Called from call sites in compiled code with oop maps (actually safepoints)

  1345 // Zaps dead locals in first java frame.

  1346 // Is entry because may need to lock to generate oop maps

  1347 // Currently, only used for compiler frames, but someday may be used

  1348 // for interpreter frames, too.

  1350 int OptoRuntime::ZapDeadCompiledLocals_count = 0;

  1352 // avoid pointers to member funcs with these helpers

  1353 static bool is_java_frame(  frame* f) { return f->is_java_frame();   }

  1354 static bool is_native_frame(frame* f) { return f->is_native_frame(); }

  1357 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,

  1358                                                 bool (*is_this_the_right_frame_to_zap)(frame*)) {

  1359   assert(JavaThread::current() == thread, "is this needed?");

  1361   if ( !ZapDeadCompiledLocals )  return;

  1363   bool skip = false;

  1365        if ( ZapDeadCompiledLocalsFirst  ==  0  ) ; // nothing special

  1366   else if ( ZapDeadCompiledLocalsFirst  >  ZapDeadCompiledLocals_count )  skip = true;

  1367   else if ( ZapDeadCompiledLocalsFirst  == ZapDeadCompiledLocals_count )

  1368     warning("starting zapping after skipping");

  1370        if ( ZapDeadCompiledLocalsLast  ==  -1  ) ; // nothing special

  1371   else if ( ZapDeadCompiledLocalsLast  <   ZapDeadCompiledLocals_count )  skip = true;

  1372   else if ( ZapDeadCompiledLocalsLast  ==  ZapDeadCompiledLocals_count )

  1373     warning("about to zap last zap");

  1375   ++ZapDeadCompiledLocals_count; // counts skipped zaps, too

  1377   if ( skip )  return;

  1379   // find java frame and zap it

  1381   for (StackFrameStream sfs(thread);  !sfs.is_done();  sfs.next()) {

  1382     if (is_this_the_right_frame_to_zap(sfs.current()) ) {

  1383       sfs.current()->zap_dead_locals(thread, sfs.register_map());

  1384       return;

  1385     }

  1386   }

  1387   warning("no frame found to zap in zap_dead_Java_locals_C");

  1388 }

  1390 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))

  1391   zap_dead_java_or_native_locals(thread, is_java_frame);

  1392 JRT_END

  1394 // The following does not work because for one thing, the

  1395 // thread state is wrong; it expects java, but it is native.

  1396 // Also, the invariants in a native stub are different and

  1397 // I'm not sure it is safe to have a MachCalRuntimeDirectNode

  1398 // in there.

  1399 // So for now, we do not zap in native stubs.

  1401 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))

  1402   zap_dead_java_or_native_locals(thread, is_native_frame);

  1403 JRT_END

  1405 # endif

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/opto/runtime.cpp@f4f6ae481e1a

src/share/vm/opto/runtime.cpp