jdk8-mips64-public/hotspot: src/share/vm/interpreter/interpreter.hpp@a9becfeecd1b (annotated)

src/share/vm/interpreter/interpreter.hpp@a9becfeecd1b (annotated)

src/share/vm/interpreter/interpreter.hpp

Wed, 22 Jan 2014 17:42:23 -0800

author: kvn
date: Wed, 22 Jan 2014 17:42:23 -0800
changeset 6503: a9becfeecd1b
parent 6198: 55fb97c4c58d
child 6876: 710a3c8b516e
child 7149: 094cbdffa87d
permissions: -rw-r--r--

Merge

 /*
  * 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(_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

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/interpreter/interpreter.hpp@a9becfeecd1b (annotated)

src/share/vm/interpreter/interpreter.hpp