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

 /*

  * Copyright 1997-2009 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.

  *

  */

 // The InterpreterRuntime is called by the interpreter for everything

 // that cannot/should not be dealt with in assembly and needs C support.

 class InterpreterRuntime: AllStatic {

   friend class BytecodeClosure; // for method and bcp

   friend class PrintingClosure; // for method and bcp

  private:

   // Helper functions to access current interpreter state

   static frame     last_frame(JavaThread *thread)    { return thread->last_frame(); }

   static methodOop method(JavaThread *thread)        { return last_frame(thread).interpreter_frame_method(); }

   static address   bcp(JavaThread *thread)           { return last_frame(thread).interpreter_frame_bcp(); }

   static void      set_bcp_and_mdp(address bcp, JavaThread*thread);

   static Bytecodes::Code code(JavaThread *thread)    {

     // pass method to avoid calling unsafe bcp_to_method (partial fix 4926272)

     return Bytecodes::code_at(bcp(thread), method(thread));

   }

   static bool      already_resolved(JavaThread *thread) { return cache_entry(thread)->is_resolved(code(thread)); }

   static int       one_byte_index(JavaThread *thread)   { return bcp(thread)[1]; }

   static int       two_byte_index(JavaThread *thread)   { return Bytes::get_Java_u2(bcp(thread) + 1); }

   static int       four_byte_index(JavaThread *thread)  { return Bytes::get_native_u4(bcp(thread) + 1); }

   static int       number_of_dimensions(JavaThread *thread)  { return bcp(thread)[3]; }

   static ConstantPoolCacheEntry* cache_entry_at(JavaThread *thread, int i)  { return method(thread)->constants()->cache()->entry_at(i); }

   static ConstantPoolCacheEntry* cache_entry(JavaThread *thread)            { return cache_entry_at(thread, Bytes::get_native_u2(bcp(thread) + 1)); }

   static void      note_trap(JavaThread *thread, int reason, TRAPS);

   // Inner work method for Interpreter's frequency counter overflow

   static nmethod* frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp);

  public:

   // Constants

   static void    ldc           (JavaThread* thread, bool wide);

   // Allocation

   static void    _new          (JavaThread* thread, constantPoolOopDesc* pool, int index);

   static void    newarray      (JavaThread* thread, BasicType type, jint size);

   static void    anewarray     (JavaThread* thread, constantPoolOopDesc* pool, int index, jint size);

   static void    multianewarray(JavaThread* thread, jint* first_size_address);

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

   // Quicken instance-of and check-cast bytecodes

   static void    quicken_io_cc(JavaThread* thread);

   // Exceptions thrown by the interpreter

   static void    throw_AbstractMethodError(JavaThread* thread);

   static void    throw_IncompatibleClassChangeError(JavaThread* thread);

   static void    throw_StackOverflowError(JavaThread* thread);

   static void    throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index);

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

   static void    throw_WrongMethodTypeException(JavaThread* thread, oopDesc* mtype = NULL, oopDesc* mhandle = NULL);

   static void    create_exception(JavaThread* thread, char* name, char* message);

   static void    create_klass_exception(JavaThread* thread, char* name, oopDesc* obj);

   static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception);

   static void    throw_pending_exception(JavaThread* thread);

   // Statics & fields

   static void    resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode);

   // Synchronization

   static void    monitorenter(JavaThread* thread, BasicObjectLock* elem);

   static void    monitorexit (JavaThread* thread, BasicObjectLock* elem);

   static void    throw_illegal_monitor_state_exception(JavaThread* thread);

   static void    new_illegal_monitor_state_exception(JavaThread* thread);

   // Calls

   static void    resolve_invoke       (JavaThread* thread, Bytecodes::Code bytecode);

   static void    resolve_invokedynamic(JavaThread* thread);

   // Breakpoints

   static void _breakpoint(JavaThread* thread, methodOopDesc* method, address bcp);

   static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp);

   static void            set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code);

   static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(bcp(thread)) == Bytecodes::_breakpoint; }

   // Safepoints

   static void    at_safepoint(JavaThread* thread);

   // Debugger support

   static void post_field_access(JavaThread *thread, oopDesc* obj,

     ConstantPoolCacheEntry *cp_entry);

   static void post_field_modification(JavaThread *thread, oopDesc* obj,

     ConstantPoolCacheEntry *cp_entry, jvalue *value);

   static void post_method_entry(JavaThread *thread);

   static void post_method_exit (JavaThread *thread);

   static int  interpreter_contains(address pc);

   // Native signature handlers

   static void prepare_native_call(JavaThread* thread, methodOopDesc* method);

   static address slow_signature_handler(JavaThread* thread,

                                         methodOopDesc* method,

                                         intptr_t* from, intptr_t* to);

 #if defined(IA32) || defined(AMD64)

   // Popframe support (only needed on x86 and AMD64)

   static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address);

 #endif

   // Platform dependent stuff

   #include "incls/_interpreterRT_pd.hpp.incl"

   // Interpreter's frequency counter overflow

   static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp);

   // Interpreter profiling support

   static jint    bcp_to_di(methodOopDesc* method, address cur_bcp);

   static jint    profile_method(JavaThread* thread, address cur_bcp);

   static void    update_mdp_for_ret(JavaThread* thread, int bci);

 #ifdef ASSERT

   static void    verify_mdp(methodOopDesc* method, address bcp, address mdp);

 #endif // ASSERT

 };

 class SignatureHandlerLibrary: public AllStatic {

  public:

   enum { buffer_size =  1*K }; // the size of the temporary code buffer

   enum { blob_size   = 32*K }; // the size of a handler code blob.

  private:

   static BufferBlob*              _handler_blob; // the current buffer blob containing the generated handlers

   static address                  _handler;      // next available address within _handler_blob;

   static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection

   static GrowableArray<address>*  _handlers;     // the corresponding handlers

   static address                  _buffer;       // the temporary code buffer

   static address set_handler_blob();

   static void initialize();

   static address set_handler(CodeBuffer* buffer);

   static void pd_set_handler(address handler);

  public:

   static void add(methodHandle method);

 };