1 /* 2 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifdef CC_INTERP 26 27 // This file contains the platform-independent parts 28 // of the c++ interpreter 29 30 class CppInterpreter: public AbstractInterpreter { 31 friend class VMStructs; 32 friend class Interpreter; // contains() 33 friend class InterpreterGenerator; // result handlers 34 friend class CppInterpreterGenerator; // result handlers 35 public: 36 37 38 protected: 39 40 // tosca result -> stack result 41 static address _tosca_to_stack[number_of_result_handlers]; // converts tosca to C++ interpreter stack result 42 // stack result -> stack result 43 static address _stack_to_stack[number_of_result_handlers]; // pass result between C++ interpreter calls 44 // stack result -> native abi result 45 static address _stack_to_native_abi[number_of_result_handlers]; // converts C++ interpreter results to native abi 46 47 // this is to allow frame and only frame to use contains(). 48 friend class frame; 49 50 public: 51 // Initialization/debugging 52 static void initialize(); 53 // this only returns whether a pc is within generated code for the interpreter. 54 55 // This is a moderately dubious interface for the c++ interpreter. Only 56 // frame code and debug.cpp should be using it. 57 static bool contains(address pc); 58 59 public: 60 61 62 // No displatch table to switch so no need for these to do anything special 63 static void notice_safepoints() {} 64 static void ignore_safepoints() {} 65 66 static address native_result_to_tosca() { return (address)_native_abi_to_tosca; } // aka result handler 67 static address tosca_result_to_stack() { return (address)_tosca_to_stack; } 68 static address stack_result_to_stack() { return (address)_stack_to_stack; } 69 static address stack_result_to_native() { return (address)_stack_to_native_abi; } 70 71 static address native_result_to_tosca(int index) { return _native_abi_to_tosca[index]; } // aka result handler 72 static address tosca_result_to_stack(int index) { return _tosca_to_stack[index]; } 73 static address stack_result_to_stack(int index) { return _stack_to_stack[index]; } 74 static address stack_result_to_native(int index) { return _stack_to_native_abi[index]; } 75 76 static address return_entry (TosState state, int length); 77 static address deopt_entry (TosState state, int length); 78 79 #include "incls/_cppInterpreter_pd.hpp.incl" 80 81 }; 82 83 #endif // CC_INTERP