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

 /*

  * Copyright 1998-2007 Sun Microsystems, Inc.  All Rights Reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  *

  */

 //------------------------------OptoRuntime------------------------------------

 // Opto compiler runtime routines

 //

 // These are all generated from Ideal graphs.  They are called with the

 // Java calling convention.  Internally they call C++.  They are made once at

 // startup time and Opto compiles calls to them later.

 // Things are broken up into quads: the signature they will be called with,

 // the address of the generated code, the corresponding C++ code and an

 // nmethod.

 // The signature (returned by "xxx_Type()") is used at startup time by the

 // Generator to make the generated code "xxx_Java".  Opto compiles calls

 // to the generated code "xxx_Java".  When the compiled code gets executed,

 // it calls the C++ code "xxx_C".  The generated nmethod is saved in the

 // CodeCache.  Exception handlers use the nmethod to get the callee-save

 // register OopMaps.

 class CallInfo;

 //

 // NamedCounters are tagged counters which can be used for profiling

 // code in various ways.  Currently they are used by the lock coarsening code

 //

 class NamedCounter : public CHeapObj {

 public:

     enum CounterTag {

     NoTag,

     LockCounter,

     EliminatedLockCounter,

     BiasedLockingCounter

   };

 private:

   const char *  _name;

   int           _count;

   CounterTag    _tag;

   NamedCounter* _next;

  public:

   NamedCounter(const char *n, CounterTag tag = NoTag):

     _name(n),

     _count(0),

     _next(NULL),

     _tag(tag) {}

   const char * name() const     { return _name; }

   int count() const             { return _count; }

   address addr()                { return (address)&_count; }

   CounterTag tag() const        { return _tag; }

   void set_tag(CounterTag tag)  { _tag = tag; }

   NamedCounter* next() const    { return _next; }

   void set_next(NamedCounter* next) {

     assert(_next == NULL, "already set");

     _next = next;

   }

 };

 class BiasedLockingNamedCounter : public NamedCounter {

  private:

   BiasedLockingCounters _counters;

  public:

   BiasedLockingNamedCounter(const char *n) :

     NamedCounter(n, BiasedLockingCounter), _counters() {}

   BiasedLockingCounters* counters() { return &_counters; }

 };

 typedef const TypeFunc*(*TypeFunc_generator)();

 class OptoRuntime : public AllStatic {

   friend class Matcher;  // allow access to stub names

  private:

   // define stubs

   static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc);

   // References to generated stubs

   static address _new_instance_Java;

   static address _new_array_Java;

   static address _multianewarray2_Java;

   static address _multianewarray3_Java;

   static address _multianewarray4_Java;

   static address _multianewarray5_Java;

   static address _g1_wb_pre_Java;

   static address _g1_wb_post_Java;

   static address _vtable_must_compile_Java;

   static address _complete_monitor_locking_Java;

   static address _rethrow_Java;

   static address _slow_arraycopy_Java;

   static address _register_finalizer_Java;

 # ifdef ENABLE_ZAP_DEAD_LOCALS

   static address _zap_dead_Java_locals_Java;

   static address _zap_dead_native_locals_Java;

 # endif

   //

   // Implementation of runtime methods

   // =================================

   // Allocate storage for a Java instance.

   static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);

   // Allocate storage for a objArray or typeArray

   static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);

   // Post-allocation step for implementing ReduceInitialCardMarks:

   static void do_eager_card_mark(JavaThread* thread);

   // Allocate storage for a multi-dimensional arrays

   // Note: needs to be fixed for arbitrary number of dimensions

   static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);

   static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);

   static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);

   static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);

   static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread);

   static void g1_wb_post_C(void* card_addr, JavaThread* thread);

 public:

   // Slow-path Locking and Unlocking

   static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);

   static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);

 private:

   // Implicit exception support

   static void throw_null_exception_C(JavaThread* thread);

   // Exception handling

   static address handle_exception_C       (JavaThread* thread);

   static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);

   static address rethrow_C                (oopDesc* exception, JavaThread *thread, address return_pc );

   static void deoptimize_caller_frame     (JavaThread *thread, bool doit);

   // CodeBlob support

   // ===================================================================

   static ExceptionBlob*       _exception_blob;

   static void generate_exception_blob();

   static void register_finalizer(oopDesc* obj, JavaThread* thread);

   // zaping dead locals, either from Java frames or from native frames

 # ifdef ENABLE_ZAP_DEAD_LOCALS

   static void zap_dead_Java_locals_C(   JavaThread* thread);

   static void zap_dead_native_locals_C( JavaThread* thread);

   static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));

  public:

    static int ZapDeadCompiledLocals_count;

 # endif

  public:

   static bool is_callee_saved_register(MachRegisterNumbers reg);

   // One time only generate runtime code stubs

   static void generate(ciEnv* env);

   // Returns the name of a stub

   static const char* stub_name(address entry);

   // access to runtime stubs entry points for java code

   static address new_instance_Java()                     { return _new_instance_Java; }

   static address new_array_Java()                        { return _new_array_Java; }

   static address multianewarray2_Java()                  { return _multianewarray2_Java; }

   static address multianewarray3_Java()                  { return _multianewarray3_Java; }

   static address multianewarray4_Java()                  { return _multianewarray4_Java; }

   static address multianewarray5_Java()                  { return _multianewarray5_Java; }

   static address g1_wb_pre_Java()                        { return _g1_wb_pre_Java; }

   static address g1_wb_post_Java()                       { return _g1_wb_post_Java; }

   static address vtable_must_compile_stub()              { return _vtable_must_compile_Java; }

   static address complete_monitor_locking_Java()         { return _complete_monitor_locking_Java;   }

   static address slow_arraycopy_Java()                   { return _slow_arraycopy_Java; }

   static address register_finalizer_Java()               { return _register_finalizer_Java; }

 # ifdef ENABLE_ZAP_DEAD_LOCALS

   static address zap_dead_locals_stub(bool is_native)    { return is_native

                                                                   ? _zap_dead_native_locals_Java

                                                                   : _zap_dead_Java_locals_Java; }

   static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);

 # endif

   static ExceptionBlob*    exception_blob()                      { return _exception_blob; }

   // Leaf routines helping with method data update

   static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);

   // Implicit exception support

   static void throw_div0_exception_C      (JavaThread* thread);

   static void throw_stack_overflow_error_C(JavaThread* thread);

   // Exception handling

   static address rethrow_stub()             { return _rethrow_Java; }

   // Type functions

   // ======================================================

   static const TypeFunc* new_instance_Type(); // object allocation (slow case)

   static const TypeFunc* new_array_Type ();   // [a]newarray (slow case)

   static const TypeFunc* multianewarray_Type(int ndim); // multianewarray

   static const TypeFunc* multianewarray2_Type(); // multianewarray

   static const TypeFunc* multianewarray3_Type(); // multianewarray

   static const TypeFunc* multianewarray4_Type(); // multianewarray

   static const TypeFunc* multianewarray5_Type(); // multianewarray

   static const TypeFunc* g1_wb_pre_Type();

   static const TypeFunc* g1_wb_post_Type();

   static const TypeFunc* complete_monitor_enter_Type();

   static const TypeFunc* complete_monitor_exit_Type();

   static const TypeFunc* uncommon_trap_Type();

   static const TypeFunc* athrow_Type();

   static const TypeFunc* rethrow_Type();

   static const TypeFunc* Math_D_D_Type();  // sin,cos & friends

   static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends

   static const TypeFunc* modf_Type();

   static const TypeFunc* l2f_Type();

   static const TypeFunc* current_time_millis_Type();

   static const TypeFunc* flush_windows_Type();

   // arraycopy routine types

   static const TypeFunc* fast_arraycopy_Type(); // bit-blasters

   static const TypeFunc* checkcast_arraycopy_Type();

   static const TypeFunc* generic_arraycopy_Type();

   static const TypeFunc* slow_arraycopy_Type();   // the full routine

   // leaf on stack replacement interpreter accessor types

   static const TypeFunc* osr_end_Type();

   // leaf methodData routine types

   static const TypeFunc* profile_receiver_type_Type();

   // leaf on stack replacement interpreter accessor types

   static const TypeFunc* fetch_int_Type();

   static const TypeFunc* fetch_long_Type();

   static const TypeFunc* fetch_float_Type();

   static const TypeFunc* fetch_double_Type();

   static const TypeFunc* fetch_oop_Type();

   static const TypeFunc* fetch_monitor_Type();

   static const TypeFunc* register_finalizer_Type();

   // Dtrace support

   static const TypeFunc* dtrace_method_entry_exit_Type();

   static const TypeFunc* dtrace_object_alloc_Type();

 # ifdef ENABLE_ZAP_DEAD_LOCALS

   static const TypeFunc* zap_dead_locals_Type();

 # endif

  private:

  static NamedCounter * volatile _named_counters;

  public:

  // helper function which creates a named counter labeled with the

  // if they are available

  static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);

  // dumps all the named counters

  static void          print_named_counters();

 };