text: /*
   * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   *
   */
  
  #ifndef SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP
  #define SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP
  
  #include "interpreter/bytecode.hpp"
  #include "interpreter/linkResolver.hpp"
  #include "memory/universe.hpp"
  #include "oops/method.hpp"
  #include "runtime/frame.inline.hpp"
  #include "runtime/signature.hpp"
  #include "runtime/thread.inline.hpp"
  #include "utilities/top.hpp"
  
  // 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 Method*   method(JavaThread *thread)        { return last_frame(thread).interpreter_frame_method(); }
    static address   bcp(JavaThread *thread)           { return last_frame(thread).interpreter_frame_bcp(); }
    static int       bci(JavaThread *thread)           { return last_frame(thread).interpreter_frame_bci(); }
    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(method(thread), bcp(thread));
    }
    static bool      already_resolved(JavaThread *thread) { return cache_entry(thread)->is_resolved(code(thread)); }
    static Bytecode  bytecode(JavaThread *thread)      { return Bytecode(method(thread), bcp(thread)); }
    static int       get_index_u1(JavaThread *thread, Bytecodes::Code bc)
                                                          { return bytecode(thread).get_index_u1(bc); }
    static int       get_index_u2(JavaThread *thread, Bytecodes::Code bc)
                                                          { return bytecode(thread).get_index_u2(bc); }
    static int       get_index_u2_cpcache(JavaThread *thread, Bytecodes::Code bc)
                                                          { return bytecode(thread).get_index_u2_cpcache(bc); }
    static int       get_index_u4(JavaThread *thread, Bytecodes::Code bc)
                                                          { return bytecode(thread).get_index_u4(bc); }
    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);
    static void    resolve_ldc   (JavaThread* thread, Bytecodes::Code bytecode);
  
    // Allocation
    static void    _new          (JavaThread* thread, ConstantPool* pool, int index);
    static void    newarray      (JavaThread* thread, BasicType type, jint size);
    static void    anewarray     (JavaThread* thread, ConstantPool* 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    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);
  #if INCLUDE_JVMTI
    static void    member_name_arg_or_null(JavaThread* thread, address dmh, Method* m, address bcp);
  #endif
    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_invokehandle (JavaThread* thread);
    static void    resolve_invokedynamic(JavaThread* thread);
  
    // Breakpoints
    static void _breakpoint(JavaThread* thread, Method* method, address bcp);
    static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, Method* method, address bcp);
    static void            set_original_bytecode_at(JavaThread* thread, Method* 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, Method* method);
    static address slow_signature_handler(JavaThread* thread,
                                          Method* method,
                                          intptr_t* from, intptr_t* to);
  
  #if defined(IA32) || defined(AMD64) || defined(ARM)
    // Popframe support (only needed on x86, AMD64 and ARM)
    static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address);
  #endif
  
    // Platform dependent stuff
  #ifdef TARGET_ARCH_x86
  # include "interpreterRT_x86.hpp"
  #endif
  #ifdef TARGET_ARCH_sparc
  # include "interpreterRT_sparc.hpp"
  #endif
  #ifdef TARGET_ARCH_zero
  # include "interpreterRT_zero.hpp"
  #endif
  #ifdef TARGET_ARCH_arm
  # include "interpreterRT_arm.hpp"
  #endif
  #ifdef TARGET_ARCH_ppc
  # include "interpreterRT_ppc.hpp"
  #endif
  
  
    // Interpreter's frequency counter overflow
    static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp);
  
    // Interpreter profiling support
    static jint    bcp_to_di(Method* method, address cur_bcp);
    static void    profile_method(JavaThread* thread);
    static void    update_mdp_for_ret(JavaThread* thread, int bci);
  #ifdef ASSERT
    static void    verify_mdp(Method* method, address bcp, address mdp);
  #endif // ASSERT
    static MethodCounters* build_method_counters(JavaThread* thread, Method* m);
  };
  
  
  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);
  };
  
  #endif // SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP
  