bytecodefragments.java

JPC: x86 PC Hardware Emulator. 牛津大学开发的一个纯JAVA的x86系统结构硬件模拟器。

/*
    JPC: A x86 PC Hardware Emulator for a pure Java Virtual Machine
    Release Version 2.0

    A project from the Physics Dept, The University of Oxford

    Copyright (C) 2007 Isis Innovation Limited

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 2 as published by
    the Free Software Foundation.

    This program 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 for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
    Details (including contact information) can be found at: 

    www.physics.ox.ac.uk/jpc
*/

package org.jpc.emulator.memory.codeblock.fastcompiler;

import java.lang.reflect.*;
import java.util.*;
import java.io.*;

import org.jpc.emulator.processor.Processor;
import org.jpc.emulator.memory.codeblock.optimised.*;
import org.jpc.classfile.*;

public class BytecodeFragments implements MicrocodeSet
{
    public static final Object IMMEDIATE = new Object();
    public static final Object X86LENGTH = new Object();

    private static Object[][] pushCodeArray = new Object[FASTCompiler.ELEMENT_COUNT][];
    private static Object[][] popCodeArray = new Object[FASTCompiler.PROCESSOR_ELEMENT_COUNT][];

    static 
    {
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EAX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("eax") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ECX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("ecx") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EDX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("edx") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EBX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("ebx") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ESP] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("esp") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EBP] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("ebp") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ESI] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("esi") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EDI] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("edi") };
        
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EIP] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									  new Integer(JavaOpcode.GETFIELD), field("eip") };
	
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_CFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.INVOKEVIRTUAL), method("getCarryFlag") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_PFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.INVOKEVIRTUAL), method("getParityFlag") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_AFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.INVOKEVIRTUAL), method("getAuxiliaryCarryFlag") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ZFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.INVOKEVIRTUAL), method("getZeroFlag") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_SFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.INVOKEVIRTUAL), method("getSignFlag") };
	pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_TFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.GETFIELD), field("eflagsTrap") };
	pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_IFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.GETFIELD), field("eflagsInterruptEnable") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_DFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.GETFIELD), field("eflagsDirection") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_OFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.INVOKEVIRTUAL), method("getOverflowFlag") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_IOPL] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.GETFIELD), field("eflagsIOPrivilegeLevel") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_NTFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									     new Integer(JavaOpcode.GETFIELD), field("eflagsNestedTask") };
	pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_RFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									    new Integer(JavaOpcode.GETFIELD), field("eflagsResume") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_VMFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									     new Integer(JavaOpcode.GETFIELD), field("eflagsVirtual8086Mode") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ACFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									     new Integer(JavaOpcode.GETFIELD), field("eflagsAlignmentCheck") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_VIFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									     new Integer(JavaOpcode.GETFIELD), field("eflagsVirtualInterrupt") };
	pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_VIPFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									      new Integer(JavaOpcode.GETFIELD), field("eflagsVirtualInterruptPending") };
	pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_IDFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									     new Integer(JavaOpcode.GETFIELD), field("eflagsID") };
	
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ES] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									 new Integer(JavaOpcode.GETFIELD), field("es") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_CS] = new Object[] { new Integer(JavaOpcode.ALOAD_1),
									 new Integer(JavaOpcode.GETFIELD), field("cs") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_SS] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									 new Integer(JavaOpcode.GETFIELD), field("ss") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_DS] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									 new Integer(JavaOpcode.GETFIELD), field("ds") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_FS] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									 new Integer(JavaOpcode.GETFIELD), field("fs") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_GS] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									 new Integer(JavaOpcode.GETFIELD), field("gs") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_IDTR] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.GETFIELD), field("idtr") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_GDTR] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.GETFIELD), field("gdtr") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_LDTR] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.GETFIELD), field("ldtr") };
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_TSS] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.GETFIELD), field("tss") };

        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_CPL] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.INVOKEVIRTUAL), method("getCPL") };
        
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_IOPORTS] = new Object[] { new Integer(JavaOpcode.ALOAD_1),
                                                                               new Integer(JavaOpcode.GETFIELD), field("ioports") };
        
        pushCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ADDR0] = new Object[]{new Integer(JavaOpcode.ICONST_0)};
    }

    static
    {

        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EAX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("eax") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ECX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("ecx") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EDX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("edx") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EBX] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("ebx") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ESP] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("esp") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EBP] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("ebp") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ESI] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("esi") };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EDI] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("edi") };

        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_EIP] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
                                                                              new Integer(JavaOpcode.SWAP), 
                                                                              new Integer(JavaOpcode.PUTFIELD), field("eip") };

        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_CFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.SWAP), 
									   new Integer(JavaOpcode.INVOKEVIRTUAL), method("setCarryFlag", Boolean.TYPE) };

        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_PFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.SWAP), 
									   new Integer(JavaOpcode.INVOKEVIRTUAL), method("setParityFlag", Boolean.TYPE) };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_AFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.SWAP), 
									   new Integer(JavaOpcode.INVOKEVIRTUAL), method("setAuxiliaryCarryFlag", Boolean.TYPE) };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_ZFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.SWAP), 
									   new Integer(JavaOpcode.INVOKEVIRTUAL), method("setZeroFlag", Boolean.TYPE) };
        popCodeArray[FASTCompiler.PROCESSOR_ELEMENT_SFLAG] = new Object[] { new Integer(JavaOpcode.ALOAD_1), 
									   new Integer(JavaOpcode.SWAP),