/* * Copyright (c) 1997, 2012, 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_TEMPLATEINTERPRETER_HPP #define SHARE_VM_INTERPRETER_TEMPLATEINTERPRETER_HPP #include "interpreter/abstractInterpreter.hpp" #include "interpreter/templateTable.hpp" // This file contains the platform-independent parts // of the template interpreter and the template interpreter generator. #ifndef CC_INTERP //------------------------------------------------------------------------------------------------------------------------ // A little wrapper class to group tosca-specific entry points into a unit. // (tosca = Top-Of-Stack CAche) class EntryPoint VALUE_OBJ_CLASS_SPEC { private: address _entry[number_of_states]; public: // Construction EntryPoint(); EntryPoint(address bentry, address centry, address sentry, address aentry, address ientry, address lentry, address fentry, address dentry, address ventry); // Attributes address entry(TosState state) const; // return target address for a given tosca state void set_entry(TosState state, address entry); // set target address for a given tosca state void print(); // Comparison bool operator == (const EntryPoint& y); // for debugging only }; //------------------------------------------------------------------------------------------------------------------------ // A little wrapper class to group tosca-specific dispatch tables into a unit. class DispatchTable VALUE_OBJ_CLASS_SPEC { public: enum { length = 1 << BitsPerByte }; // an entry point for each byte value (also for undefined bytecodes) private: address _table[number_of_states][length]; // dispatch tables, indexed by tosca and bytecode public: // Attributes EntryPoint entry(int i) const; // return entry point for a given bytecode i void set_entry(int i, EntryPoint& entry); // set entry point for a given bytecode i address* table_for(TosState state) { return _table[state]; } address* table_for() { return table_for((TosState)0); } int distance_from(address *table) { return table - table_for(); } int distance_from(TosState state) { return distance_from(table_for(state)); } // Comparison bool operator == (DispatchTable& y); // for debugging only }; class TemplateInterpreter: public AbstractInterpreter { friend class VMStructs; friend class InterpreterMacroAssembler; friend class TemplateInterpreterGenerator; friend class InterpreterGenerator; friend class TemplateTable; // friend class Interpreter; public: enum MoreConstants { number_of_return_entries = number_of_states, // number of return entry points number_of_deopt_entries = number_of_states, // number of deoptimization entry points number_of_return_addrs = number_of_states // number of return addresses }; protected: static address _throw_ArrayIndexOutOfBoundsException_entry; static address _throw_ArrayStoreException_entry; static address _throw_ArithmeticException_entry; static address _throw_ClassCastException_entry; static address _throw_WrongMethodType_entry; static address _throw_NullPointerException_entry; static address _throw_exception_entry; static address _throw_StackOverflowError_entry; static address _remove_activation_entry; // continuation address if an exception is not handled by current frame #ifdef HOTSWAP static address _remove_activation_preserving_args_entry; // continuation address when current frame is being popped #endif // HOTSWAP #ifndef PRODUCT static EntryPoint _trace_code; #endif // !PRODUCT static EntryPoint _return_entry[number_of_return_entries]; // entry points to return to from a call static EntryPoint _earlyret_entry; // entry point to return early from a call static EntryPoint _deopt_entry[number_of_deopt_entries]; // entry points to return to from a deoptimization static EntryPoint _continuation_entry; static EntryPoint _safept_entry; static address _invoke_return_entry[number_of_return_addrs]; // for invokestatic, invokespecial, invokevirtual return entries static address _invokeinterface_return_entry[number_of_return_addrs]; // for invokeinterface return entries static address _invokedynamic_return_entry[number_of_return_addrs]; // for invokedynamic return entries static DispatchTable _active_table; // the active dispatch table (used by the interpreter for dispatch) static DispatchTable _normal_table; // the normal dispatch table (used to set the active table in normal mode) static DispatchTable _safept_table; // the safepoint dispatch table (used to set the active table for safepoints) static address _wentry_point[DispatchTable::length]; // wide instructions only (vtos tosca always) public: // Initialization/debugging static void initialize(); // this only returns whether a pc is within generated code for the interpreter. static bool contains(address pc) { return _code != NULL && _code->contains(pc); } public: static address remove_activation_early_entry(TosState state) { return _earlyret_entry.entry(state); } #ifdef HOTSWAP static address remove_activation_preserving_args_entry() { return _remove_activation_preserving_args_entry; } #endif // HOTSWAP static address remove_activation_entry() { return _remove_activation_entry; } static address throw_exception_entry() { return _throw_exception_entry; } static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; } static address throw_WrongMethodType_entry() { return _throw_WrongMethodType_entry; } static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; } static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; } // Code generation #ifndef PRODUCT static address trace_code (TosState state) { return _trace_code.entry(state); } #endif // !PRODUCT static address continuation (TosState state) { return _continuation_entry.entry(state); } static address* dispatch_table(TosState state) { return _active_table.table_for(state); } static address* dispatch_table() { return _active_table.table_for(); } static int distance_from_dispatch_table(TosState state){ return _active_table.distance_from(state); } static address* normal_table(TosState state) { return _normal_table.table_for(state); } static address* normal_table() { return _normal_table.table_for(); } // Support for invokes static address* invoke_return_entry_table() { return _invoke_return_entry; } static address* invokeinterface_return_entry_table() { return _invokeinterface_return_entry; } static address* invokedynamic_return_entry_table() { return _invokedynamic_return_entry; } static int TosState_as_index(TosState state); static address* invoke_return_entry_table_for(Bytecodes::Code code); static address deopt_entry(TosState state, int length); static address return_entry(TosState state, int length, Bytecodes::Code code); // Safepoint support static void notice_safepoints(); // stops the thread when reaching a safepoint static void ignore_safepoints(); // ignores safepoints // Deoptimization support // Compute the entry address for continuation after static address deopt_continue_after_entry(Method* method, address bcp, int callee_parameters, bool is_top_frame); // Deoptimization should reexecute this bytecode static bool bytecode_should_reexecute(Bytecodes::Code code); // Compute the address for reexecution static address deopt_reexecute_entry(Method* method, address bcp); #ifdef TARGET_ARCH_x86 # include "templateInterpreter_x86.hpp" #endif #ifdef TARGET_ARCH_sparc # include "templateInterpreter_sparc.hpp" #endif #ifdef TARGET_ARCH_zero # include "templateInterpreter_zero.hpp" #endif #ifdef TARGET_ARCH_arm # include "templateInterpreter_arm.hpp" #endif #ifdef TARGET_ARCH_ppc # include "templateInterpreter_ppc.hpp" #endif }; #endif // !CC_INTERP #endif // SHARE_VM_INTERPRETER_TEMPLATEINTERPRETER_HPP