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 /*

  * 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.

  *

  */

 /*

  * This file has been modified by Loongson Technology in 2015. These

  * modifications are Copyright (c) 2015 Loongson Technology, and are made

  * available on the same license terms set forth above.

  */

 #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_inner(JavaThread* thread, int reason,

                                    methodHandle trap_method, int trap_bci, TRAPS);

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

 #ifdef CC_INTERP

   // Profile traps in C++ interpreter.

   static void      note_trap(JavaThread* thread, int reason, Method *method, int trap_bci);

 #endif // CC_INTERP

   // 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);

 #ifdef CC_INTERP

   // Profile traps in C++ interpreter.

   static void    note_nullCheck_trap (JavaThread* thread, Method *method, int trap_bci);

   static void    note_div0Check_trap (JavaThread* thread, Method *method, int trap_bci);

   static void    note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci);

   static void    note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci);

   static void    note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci);

   // A dummy for makros that shall not profile traps.

   static void    note_no_trap(JavaThread* thread, Method *method, int trap_bci) {}

 #endif // CC_INTERP

   // 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) || defined(MIPS64)

   // 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_mips

 # include "interpreterRT_mips.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