Mercurial > hg > truffle
annotate src/share/vm/interpreter/interpreter.hpp @ 7212:291ffc492eb6
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 14 Dec 2012 14:35:13 +0100 |
| parents | b9a9ed0f8eeb |
| children | a5de0cc2f91c |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 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 | |
| 605 | 37 // This file contains the platform-independent parts |
| 0 | 38 // of the interpreter and the interpreter generator. |
| 39 | |
| 40 //------------------------------------------------------------------------------------------------------------------------ | |
| 41 // An InterpreterCodelet is a piece of interpreter code. All | |
| 42 // interpreter code is generated into little codelets which | |
| 43 // contain extra information for debugging and printing purposes. | |
| 44 | |
| 45 class InterpreterCodelet: public Stub { | |
| 46 friend class VMStructs; | |
| 47 private: | |
| 48 int _size; // the size in bytes | |
| 49 const char* _description; // a description of the codelet, for debugging & printing | |
| 50 Bytecodes::Code _bytecode; // associated bytecode if any | |
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51 DEBUG_ONLY(CodeComments _comments;) // Comments for annotating assembler output. |
| 0 | 52 |
| 53 public: | |
| 54 // Initialization/finalization | |
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55 void initialize(int size, |
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56 CodeComments& comments) { _size = size; DEBUG_ONLY(_comments.assign(comments);) } |
| 0 | 57 void finalize() { ShouldNotCallThis(); } |
| 58 | |
| 59 // General info/converters | |
| 60 int size() const { return _size; } | |
| 61 static int code_size_to_size(int code_size) { return round_to(sizeof(InterpreterCodelet), CodeEntryAlignment) + code_size; } | |
| 62 | |
| 63 // Code info | |
| 64 address code_begin() const { return (address)this + round_to(sizeof(InterpreterCodelet), CodeEntryAlignment); } | |
| 65 address code_end() const { return (address)this + size(); } | |
| 66 | |
| 67 // Debugging | |
| 68 void verify(); | |
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69 void print_on(outputStream* st) const; |
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70 void print() const { print_on(tty); } |
| 0 | 71 |
| 72 // Interpreter-specific initialization | |
| 73 void initialize(const char* description, Bytecodes::Code bytecode); | |
| 74 | |
| 75 // Interpreter-specific attributes | |
| 76 int code_size() const { return code_end() - code_begin(); } | |
| 77 const char* description() const { return _description; } | |
| 78 Bytecodes::Code bytecode() const { return _bytecode; } | |
| 79 }; | |
| 80 | |
| 81 // Define a prototype interface | |
| 82 DEF_STUB_INTERFACE(InterpreterCodelet); | |
| 83 | |
| 84 | |
| 85 //------------------------------------------------------------------------------------------------------------------------ | |
| 86 // A CodeletMark serves as an automatic creator/initializer for Codelets | |
| 87 // (As a subclass of ResourceMark it automatically GC's the allocated | |
| 88 // code buffer and assemblers). | |
| 89 | |
| 90 class CodeletMark: ResourceMark { | |
| 91 private: | |
| 92 InterpreterCodelet* _clet; | |
| 93 InterpreterMacroAssembler** _masm; | |
| 94 CodeBuffer _cb; | |
| 95 | |
| 96 int codelet_size() { | |
| 97 // Request the whole code buffer (minus a little for alignment). | |
| 98 // The commit call below trims it back for each codelet. | |
| 99 int codelet_size = AbstractInterpreter::code()->available_space() - 2*K; | |
| 100 | |
| 101 // Guarantee there's a little bit of code space left. | |
| 102 guarantee (codelet_size > 0 && (size_t)codelet_size > 2*K, | |
| 103 "not enough space for interpreter generation"); | |
| 104 | |
| 105 return codelet_size; | |
| 106 } | |
| 107 | |
| 108 public: | |
| 109 CodeletMark( | |
| 110 InterpreterMacroAssembler*& masm, | |
| 111 const char* description, | |
| 112 Bytecodes::Code bytecode = Bytecodes::_illegal): | |
| 113 _clet((InterpreterCodelet*)AbstractInterpreter::code()->request(codelet_size())), | |
| 114 _cb(_clet->code_begin(), _clet->code_size()) | |
| 115 | |
| 116 { // request all space (add some slack for Codelet data) | |
| 117 assert (_clet != NULL, "we checked not enough space already"); | |
| 118 | |
| 119 // initialize Codelet attributes | |
| 120 _clet->initialize(description, bytecode); | |
| 121 // create assembler for code generation | |
| 122 masm = new InterpreterMacroAssembler(&_cb); | |
| 123 _masm = &masm; | |
| 124 } | |
| 125 | |
| 126 ~CodeletMark() { | |
| 127 // align so printing shows nop's instead of random code at the end (Codelets are aligned) | |
| 128 (*_masm)->align(wordSize); | |
| 129 // make sure all code is in code buffer | |
| 130 (*_masm)->flush(); | |
| 131 | |
| 132 | |
| 133 // commit Codelet | |
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134 AbstractInterpreter::code()->commit((*_masm)->code()->pure_insts_size(), (*_masm)->code()->comments()); |
| 0 | 135 // make sure nobody can use _masm outside a CodeletMark lifespan |
| 136 *_masm = NULL; | |
| 137 } | |
| 138 }; | |
| 139 | |
| 140 // Wrapper classes to produce Interpreter/InterpreterGenerator from either | |
| 141 // the c++ interpreter or the template interpreter. | |
| 142 | |
| 143 class Interpreter: public CC_INTERP_ONLY(CppInterpreter) NOT_CC_INTERP(TemplateInterpreter) { | |
| 144 | |
| 145 public: | |
| 146 // Debugging/printing | |
| 147 static InterpreterCodelet* codelet_containing(address pc) { return (InterpreterCodelet*)_code->stub_containing(pc); } | |
| 1972 | 148 #ifdef TARGET_ARCH_x86 |
| 149 # include "interpreter_x86.hpp" | |
| 150 #endif | |
| 151 #ifdef TARGET_ARCH_sparc | |
| 152 # include "interpreter_sparc.hpp" | |
| 153 #endif | |
| 154 #ifdef TARGET_ARCH_zero | |
| 155 # include "interpreter_zero.hpp" | |
| 156 #endif | |
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157 #ifdef TARGET_ARCH_arm |
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158 # include "interpreter_arm.hpp" |
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159 #endif |
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160 #ifdef TARGET_ARCH_ppc |
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161 # include "interpreter_ppc.hpp" |
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162 #endif |
| 1972 | 163 |
| 0 | 164 }; |
| 1972 | 165 |
| 166 #endif // SHARE_VM_INTERPRETER_INTERPRETER_HPP |