c9e484d473
Update the copyright to be 2010 on all changed files in OpenJDK Reviewed-by: ohair
165 lines
5.9 KiB
C++
165 lines
5.9 KiB
C++
/*
|
|
* Copyright (c) 1997, 2011, 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
|
|
|
|
public:
|
|
// Initialization/finalization
|
|
void initialize(int size) { _size = size; }
|
|
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());
|
|
// 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
|