1 /* 2 * Copyright (c) 1997, 2014, 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 #ifndef SHARE_VM_INTERPRETER_INTERPRETER_HPP 26 #define SHARE_VM_INTERPRETER_INTERPRETER_HPP 27 28 #include "code/stubs.hpp" 29 #include "interpreter/cppInterpreter.hpp" 30 #include "interpreter/templateInterpreter.hpp" 31 #ifdef ZERO 32 #ifdef TARGET_ARCH_zero 33 # include "entry_zero.hpp" 34 #endif 35 #endif 36 37 // This file contains the platform-independent parts 38 // of the interpreter and the interpreter generator. 39 40 class InterpreterMacroAssembler; 41 42 //------------------------------------------------------------------------------------------------------------------------ 43 // An InterpreterCodelet is a piece of interpreter code. All 44 // interpreter code is generated into little codelets which 45 // contain extra information for debugging and printing purposes. 46 47 class InterpreterCodelet: public Stub { 48 friend class VMStructs; 49 private: 50 int _size; // the size in bytes 51 const char* _description; // a description of the codelet, for debugging & printing 52 Bytecodes::Code _bytecode; // associated bytecode if any 53 DEBUG_ONLY(CodeStrings _strings;) // Comments for annotating assembler output. 54 55 public: 56 // Initialization/finalization 57 void initialize(int size, 58 CodeStrings& strings) { _size = size; 59 DEBUG_ONLY(::new(&_strings) CodeStrings();) 60 DEBUG_ONLY(_strings.assign(strings);) } 61 void finalize() { ShouldNotCallThis(); } 62 63 // General info/converters 64 int size() const { return _size; } 65 static int code_size_to_size(int code_size) { return round_to(sizeof(InterpreterCodelet), CodeEntryAlignment) + code_size; } 66 67 // Code info 68 address code_begin() const { return (address)this + round_to(sizeof(InterpreterCodelet), CodeEntryAlignment); } 69 address code_end() const { return (address)this + size(); } 70 71 // Debugging 72 void verify(); 73 void print_on(outputStream* st) const; 74 void print() const { print_on(tty); } 75 76 // Interpreter-specific initialization 77 void initialize(const char* description, Bytecodes::Code bytecode); 78 79 // Interpreter-specific attributes 80 int code_size() const { return code_end() - code_begin(); } 81 const char* description() const { return _description; } 82 Bytecodes::Code bytecode() const { return _bytecode; } 83 }; 84 85 // Define a prototype interface 86 DEF_STUB_INTERFACE(InterpreterCodelet); 87 88 89 //------------------------------------------------------------------------------------------------------------------------ 90 // A CodeletMark serves as an automatic creator/initializer for Codelets 91 // (As a subclass of ResourceMark it automatically GC's the allocated 92 // code buffer and assemblers). 93 94 class CodeletMark: ResourceMark { 95 private: 96 InterpreterCodelet* _clet; 97 InterpreterMacroAssembler** _masm; 98 CodeBuffer _cb; 99 100 int codelet_size() { 101 // Request the whole code buffer (minus a little for alignment). 102 // The commit call below trims it back for each codelet. 103 int codelet_size = AbstractInterpreter::code()->available_space() - 2*K; 104 105 // Guarantee there's a little bit of code space left. 106 guarantee(codelet_size > 0 && (size_t)codelet_size > 2*K, 107 "not enough space for interpreter generation"); 108 109 return codelet_size; 110 } 111 112 public: 113 CodeletMark(InterpreterMacroAssembler*& masm, 114 const char* description, 115 Bytecodes::Code bytecode = Bytecodes::_illegal); 116 ~CodeletMark(); 117 }; 118 119 // Wrapper classes to produce Interpreter/InterpreterGenerator from either 120 // the c++ interpreter or the template interpreter. 121 122 class Interpreter: public CC_INTERP_ONLY(CppInterpreter) NOT_CC_INTERP(TemplateInterpreter) { 123 124 public: 125 // Debugging/printing 126 static InterpreterCodelet* codelet_containing(address pc) { return (InterpreterCodelet*)_code->stub_containing(pc); } 127 128 #ifdef TARGET_ARCH_x86 129 # include "interpreter_x86.hpp" 130 #endif 131 #ifdef TARGET_ARCH_sparc 132 # include "interpreter_sparc.hpp" 133 #endif 134 #ifdef TARGET_ARCH_zero 135 # include "interpreter_zero.hpp" 136 #endif 137 #ifdef TARGET_ARCH_arm 138 # include "interpreter_arm.hpp" 139 #endif 140 #ifdef TARGET_ARCH_ppc 141 # include "interpreter_ppc.hpp" 142 #endif 143 #ifdef TARGET_ARCH_aarch64 144 # include "interpreter_aarch64.hpp" 145 #endif 146 147 }; 148 149 #endif // SHARE_VM_INTERPRETER_INTERPRETER_HPP