1 /* |
1 /* |
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
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 |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. |
7 * published by the Free Software Foundation. |
34 #endif |
34 #endif |
35 #endif |
35 #endif |
36 |
36 |
37 // This file contains the platform-independent parts |
37 // This file contains the platform-independent parts |
38 // of the interpreter and the interpreter generator. |
38 // of the interpreter and the interpreter generator. |
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39 |
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40 class InterpreterMacroAssembler; |
39 |
41 |
40 //------------------------------------------------------------------------------------------------------------------------ |
42 //------------------------------------------------------------------------------------------------------------------------ |
41 // An InterpreterCodelet is a piece of interpreter code. All |
43 // An InterpreterCodelet is a piece of interpreter code. All |
42 // interpreter code is generated into little codelets which |
44 // interpreter code is generated into little codelets which |
43 // contain extra information for debugging and printing purposes. |
45 // contain extra information for debugging and printing purposes. |
97 // Request the whole code buffer (minus a little for alignment). |
99 // Request the whole code buffer (minus a little for alignment). |
98 // The commit call below trims it back for each codelet. |
100 // The commit call below trims it back for each codelet. |
99 int codelet_size = AbstractInterpreter::code()->available_space() - 2*K; |
101 int codelet_size = AbstractInterpreter::code()->available_space() - 2*K; |
100 |
102 |
101 // Guarantee there's a little bit of code space left. |
103 // Guarantee there's a little bit of code space left. |
102 guarantee (codelet_size > 0 && (size_t)codelet_size > 2*K, |
104 guarantee(codelet_size > 0 && (size_t)codelet_size > 2*K, |
103 "not enough space for interpreter generation"); |
105 "not enough space for interpreter generation"); |
104 |
106 |
105 return codelet_size; |
107 return codelet_size; |
106 } |
108 } |
107 |
109 |
108 public: |
110 public: |
109 CodeletMark( |
111 CodeletMark(InterpreterMacroAssembler*& masm, |
110 InterpreterMacroAssembler*& masm, |
112 const char* description, |
111 const char* description, |
113 Bytecodes::Code bytecode = Bytecodes::_illegal); |
112 Bytecodes::Code bytecode = Bytecodes::_illegal): |
114 ~CodeletMark(); |
113 _clet((InterpreterCodelet*)AbstractInterpreter::code()->request(codelet_size())), |
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114 _cb(_clet->code_begin(), _clet->code_size()) |
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115 |
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116 { // request all space (add some slack for Codelet data) |
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117 assert (_clet != NULL, "we checked not enough space already"); |
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118 |
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119 // initialize Codelet attributes |
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120 _clet->initialize(description, bytecode); |
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121 // create assembler for code generation |
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122 masm = new InterpreterMacroAssembler(&_cb); |
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123 _masm = &masm; |
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124 } |
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125 |
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126 ~CodeletMark() { |
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127 // align so printing shows nop's instead of random code at the end (Codelets are aligned) |
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128 (*_masm)->align(wordSize); |
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129 // make sure all code is in code buffer |
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130 (*_masm)->flush(); |
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131 |
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132 |
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133 // commit Codelet |
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134 AbstractInterpreter::code()->commit((*_masm)->code()->pure_insts_size(), (*_masm)->code()->strings()); |
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135 // make sure nobody can use _masm outside a CodeletMark lifespan |
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136 *_masm = NULL; |
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137 } |
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138 }; |
115 }; |
139 |
116 |
140 // Wrapper classes to produce Interpreter/InterpreterGenerator from either |
117 // Wrapper classes to produce Interpreter/InterpreterGenerator from either |
141 // the c++ interpreter or the template interpreter. |
118 // the c++ interpreter or the template interpreter. |
142 |
119 |
143 class Interpreter: public CC_INTERP_ONLY(CppInterpreter) NOT_CC_INTERP(TemplateInterpreter) { |
120 class Interpreter: public CC_INTERP_ONLY(CppInterpreter) NOT_CC_INTERP(TemplateInterpreter) { |
144 |
121 |
145 public: |
122 public: |
146 // Debugging/printing |
123 // Debugging/printing |
147 static InterpreterCodelet* codelet_containing(address pc) { return (InterpreterCodelet*)_code->stub_containing(pc); } |
124 static InterpreterCodelet* codelet_containing(address pc) { return (InterpreterCodelet*)_code->stub_containing(pc); } |
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125 |
148 #ifdef TARGET_ARCH_x86 |
126 #ifdef TARGET_ARCH_x86 |
149 # include "interpreter_x86.hpp" |
127 # include "interpreter_x86.hpp" |
150 #endif |
128 #endif |
151 #ifdef TARGET_ARCH_sparc |
129 #ifdef TARGET_ARCH_sparc |
152 # include "interpreter_sparc.hpp" |
130 # include "interpreter_sparc.hpp" |