| /* |
| * Copyright (c) 1997, 2013, 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_INTERPRETER_HPP |
| #define SHARE_VM_INTERPRETER_INTERPRETER_HPP |
| |
| #include "code/stubs.hpp" |
| #include "interpreter/cppInterpreter.hpp" |
| #include "interpreter/templateInterpreter.hpp" |
| #ifdef ZERO |
| #ifdef TARGET_ARCH_zero |
| # include "entry_zero.hpp" |
| #endif |
| #endif |
| |
| // This file contains the platform-independent parts |
| // of the interpreter and the interpreter generator. |
| |
| //------------------------------------------------------------------------------------------------------------------------ |
| // An InterpreterCodelet is a piece of interpreter code. All |
| // interpreter code is generated into little codelets which |
| // contain extra information for debugging and printing purposes. |
| |
| class InterpreterCodelet: public Stub { |
| friend class VMStructs; |
| private: |
| int _size; // the size in bytes |
| const char* _description; // a description of the codelet, for debugging & printing |
| Bytecodes::Code _bytecode; // associated bytecode if any |
| DEBUG_ONLY(CodeStrings _strings;) // Comments for annotating assembler output. |
| |
| public: |
| // Initialization/finalization |
| void initialize(int size, |
| CodeStrings& strings) { _size = size; |
| DEBUG_ONLY(::new(&_strings) CodeStrings();) |
| DEBUG_ONLY(_strings.assign(strings);) } |
| void finalize() { ShouldNotCallThis(); } |
| |
| // General info/converters |
| int size() const { return _size; } |
| static int code_size_to_size(int code_size) { return round_to(sizeof(InterpreterCodelet), CodeEntryAlignment) + code_size; } |
| |
| // Code info |
| address code_begin() const { return (address)this + round_to(sizeof(InterpreterCodelet), CodeEntryAlignment); } |
| address code_end() const { return (address)this + size(); } |
| |
| // Debugging |
| void verify(); |
| void print_on(outputStream* st) const; |
| void print() const { print_on(tty); } |
| |
| // Interpreter-specific initialization |
| void initialize(const char* description, Bytecodes::Code bytecode); |
| |
| // Interpreter-specific attributes |
| int code_size() const { return code_end() - code_begin(); } |
| const char* description() const { return _description; } |
| Bytecodes::Code bytecode() const { return _bytecode; } |
| }; |
| |
| // Define a prototype interface |
| DEF_STUB_INTERFACE(InterpreterCodelet); |
| |
| |
| //------------------------------------------------------------------------------------------------------------------------ |
| // A CodeletMark serves as an automatic creator/initializer for Codelets |
| // (As a subclass of ResourceMark it automatically GC's the allocated |
| // code buffer and assemblers). |
| |
| class CodeletMark: ResourceMark { |
| private: |
| InterpreterCodelet* _clet; |
| InterpreterMacroAssembler** _masm; |
| CodeBuffer _cb; |
| |
| int codelet_size() { |
| // Request the whole code buffer (minus a little for alignment). |
| // The commit call below trims it back for each codelet. |
| int codelet_size = AbstractInterpreter::code()->available_space() - 2*K; |
| |
| // Guarantee there's a little bit of code space left. |
| guarantee (codelet_size > 0 && (size_t)codelet_size > 2*K, |
| "not enough space for interpreter generation"); |
| |
| return codelet_size; |
| } |
| |
| public: |
| CodeletMark( |
| InterpreterMacroAssembler*& masm, |
| const char* description, |
| Bytecodes::Code bytecode = Bytecodes::_illegal): |
| _clet((InterpreterCodelet*)AbstractInterpreter::code()->request(codelet_size())), |
| _cb(_clet->code_begin(), _clet->code_size()) |
| |
| { // request all space (add some slack for Codelet data) |
| assert (_clet != NULL, "we checked not enough space already"); |
| |
| // initialize Codelet attributes |
| _clet->initialize(description, bytecode); |
| // create assembler for code generation |
| masm = new InterpreterMacroAssembler(&_cb); |
| _masm = &masm; |
| } |
| |
| ~CodeletMark() { |
| // align so printing shows nop's instead of random code at the end (Codelets are aligned) |
| (*_masm)->align(wordSize); |
| // make sure all code is in code buffer |
| (*_masm)->flush(); |
| |
| |
| // commit Codelet |
| AbstractInterpreter::code()->commit((*_masm)->code()->pure_insts_size(), (*_masm)->code()->strings()); |
| // make sure nobody can use _masm outside a CodeletMark lifespan |
| *_masm = NULL; |
| } |
| }; |
| |
| // Wrapper classes to produce Interpreter/InterpreterGenerator from either |
| // the c++ interpreter or the template interpreter. |
| |
| class Interpreter: public CC_INTERP_ONLY(CppInterpreter) NOT_CC_INTERP(TemplateInterpreter) { |
| |
| public: |
| // Debugging/printing |
| static InterpreterCodelet* codelet_containing(address pc) { return (InterpreterCodelet*)_code->stub_containing(pc); } |
| #ifdef TARGET_ARCH_x86 |
| # include "interpreter_x86.hpp" |
| #endif |
| #ifdef TARGET_ARCH_sparc |
| # include "interpreter_sparc.hpp" |
| #endif |
| #ifdef TARGET_ARCH_zero |
| # include "interpreter_zero.hpp" |
| #endif |
| #ifdef TARGET_ARCH_arm |
| # include "interpreter_arm.hpp" |
| #endif |
| #ifdef TARGET_ARCH_ppc |
| # include "interpreter_ppc.hpp" |
| #endif |
| |
| }; |
| |
| #endif // SHARE_VM_INTERPRETER_INTERPRETER_HPP |