ucodestaticmethods.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.real;

import org.jpc.emulator.processor.*;
import org.jpc.emulator.motherboard.*;

public class UCodeStaticMethods
{
    private static final ProcessorException exceptionDE = new ProcessorException(Processor.PROC_EXCEPTION_DE, true);

    protected static final boolean[] parityMap;
    static 
    {
        parityMap = new boolean[256];
        for (int i=0; i<256; i++)
        {
            boolean val = true;
            for (int j=0; j<8; j++)
                if ((0x1 & (i >> j)) == 1)
                    val = !val;

            parityMap[i] = val;
        }
    } 

    public static int eip_nef_EIP_UPDATE_eip_x86length(int eip, int x86length)
    {
        return eip + x86length;
    }

    public static int reg0_nef_LOAD0_AL_eax(int eax)
    {
        return eax & 0xff;
    }

    public static int reg0_nef_LOAD0_CL_ecx(int ecx)
    {
        return ecx & 0xff;
    }

    public static int reg0_nef_LOAD0_DL_edx(int edx)
    {
        return edx & 0xff;
    }

    public static int reg0_nef_LOAD0_BL_ebx(int ebx)
    {
        return ebx & 0xff;
    }

    public static int reg0_nef_LOAD0_AH_eax(int eax)
    {
        return (eax >>> 8) & 0xff; 
    }

    public static int reg0_nef_LOAD0_CH_ecx(int ecx)
    {
        return (ecx >>> 8) & 0xff; 
    }

    public static int reg0_nef_LOAD0_DH_edx(int edx)
    {
        return (edx >>> 8) & 0xff; 
    }

    public static int reg0_nef_LOAD0_BH_ebx(int ebx)
    {
        return (ebx >>> 8) & 0xff; 
    }

    public static int reg0_nef_LOAD0_AX_eax(int eax)
    {
        return eax & 0xffff;
    }

    public static int reg0_nef_LOAD0_CX_ecx(int ecx)
    {
        return ecx & 0xffff;
    }

    public static int reg0_nef_LOAD0_DX_edx(int edx)
    {
        return edx & 0xffff;
    }

    public static int reg0_nef_LOAD0_BX_ebx(int ebx)
    {
        return ebx & 0xffff;
    }

    public static int reg0_nef_LOAD0_SP_esp(int esp)
    {
        return esp & 0xffff;
    }

    public static int reg0_nef_LOAD0_BP_ebp(int ebp)
    {
        return ebp & 0xffff;
    }

    public static int reg0_nef_LOAD0_SI_esi(int esi)
    {
        return esi & 0xffff;
    }

    public static int reg0_nef_LOAD0_DI_edi(int edi)
    {
        return edi & 0xffff;
    }

    public static int reg0_nef_LOAD0_EAX_eax(int eax)
    {
        return eax;
    }

    public static int reg0_nef_LOAD0_ECX_ecx(int ecx)
    {
        return ecx;
    }

    public static int reg0_nef_LOAD0_EDX_edx(int edx)
    {
        return edx;
    }

    public static int reg0_nef_LOAD0_EBX_ebx(int ebx)
    {
        return ebx;
    }

    public static int reg0_nef_LOAD0_ESP_esp(int esp)
    {
        return esp;
    }

    public static int reg0_nef_LOAD0_EBP_ebp(int ebp)
    {
        return ebp;
    }

    public static int reg0_nef_LOAD0_ESI_esi(int esi)
    {
        return esi;
    }

    public static int reg0_nef_LOAD0_EDI_edi(int edi)
    {
        return edi;
    }

    public static int reg0_hef_LOAD0_ES_es(Segment es)
    {
        return 0xffff & es.getSelector(); 
    }

    public static int reg0_hef_LOAD0_CS_cs(Segment cs)
    {
        return 0xffff & cs.getSelector(); 
    }

    public static int reg0_hef_LOAD0_SS_ss(Segment ss)
    {
        return 0xffff & ss.getSelector(); 
    }

    public static int reg0_hef_LOAD0_DS_ds(Segment ds)
    {
        return 0xffff & ds.getSelector(); 
    }

    public static int reg0_hef_LOAD0_FS_fs(Segment fs)
    {
        return 0xffff & fs.getSelector(); 
    }

    public static int reg0_hef_LOAD0_GS_gs(Segment gs)
    {
        return 0xffff & gs.getSelector(); 
    }

    public static int reg0_nef_LOAD0_IB_immediate(int immediate)
    {
        return immediate & 0xff; 
    }

    public static int reg0_nef_LOAD0_IW_immediate(int immediate)
    {
        return immediate & 0xffff; 
    }

    public static int reg0_nef_LOAD0_ID_immediate(int immediate)
    {
        return immediate; 
    }

    public static int reg0_hef_LOAD0_MEM_BYTE_seg0_addr0(Segment seg0, int addr0)
    {
        return 0xff & seg0.getByte(addr0);
    }

    public static int reg0_hef_LOAD0_MEM_WORD_seg0_addr0(Segment seg0, int addr0)
    {
        return 0xffff & seg0.getWord(addr0);
    }

    public static int reg0_hef_LOAD0_MEM_DWORD_seg0_addr0(Segment seg0, int addr0)
    {
        return seg0.getDoubleWord(addr0);
    }

    public static int reg0_nef_LOAD0_FLAGS_cflag_pflag_aflag_zflag_sflag_tflag_iflag_dflag_oflag_iopl_ntflag(int cflag, int pflag, int aflag, int zflag, int sflag, int tflag, int iflag, int dflag, int oflag, int iopl, int ntflag)
    {
        int eflags = 0;
        eflags |= ntflag << 14;
        eflags |= iopl << 12;
        eflags |= oflag << 11;
        eflags |= dflag << 10;
        eflags |= iflag << 9;
        eflags |= tflag << 8;
        eflags |= sflag << 7;
        eflags |= zflag << 6;
        eflags |= aflag << 4;
        eflags |= pflag << 2;
        eflags |= cflag;
        eflags |= 2;
        return eflags;
    }

    public static int reg0_nef_LOAD0_ADDR_addr0(int addr0)
    {
        return addr0;
    }

    public static int reg1_nef_LOAD1_AL_eax(int eax)
    {
        return eax & 0xff;
    }

    public static int reg1_nef_LOAD1_CL_ecx(int ecx)
    {
        return ecx & 0xff;
    }

    public static int reg1_nef_LOAD1_DL_edx(int edx)
    {
        return edx & 0xff;
    }

    public static int reg1_nef_LOAD1_BL_ebx(int ebx)
    {
        return ebx & 0xff;
    }

    public static int reg1_nef_LOAD1_AH_eax(int eax)
    {
        return (eax >>> 8) & 0xff; 
    }

    public static int reg1_nef_LOAD1_CH_ecx(int ecx)
    {
        return (ecx >>> 8) & 0xff; 
    }

    public static int reg1_nef_LOAD1_DH_edx(int edx)
    {
        return (edx >>> 8) & 0xff; 
    }

    public static int reg1_nef_LOAD1_BH_ebx(int ebx)
    {
        return (ebx >>> 8) & 0xff; 
    }

    public static int reg1_nef_LOAD1_AX_eax(int eax)
    {
        return eax & 0xffff;
    }

    public static int reg1_nef_LOAD1_CX_ecx(int ecx)
    {
        return ecx & 0xffff;
    }

    public static int reg1_nef_LOAD1_DX_edx(int edx)
    {
        return edx & 0xffff;
    }

    public static int reg1_nef_LOAD1_BX_ebx(int ebx)
    {
        return ebx & 0xffff;
    }

    public static int reg1_nef_LOAD1_SP_esp(int esp)
    {
        return esp & 0xffff;
    }

    public static int reg1_nef_LOAD1_BP_ebp(int ebp)
    {
        return ebp & 0xffff;
    }

    public static int reg1_nef_LOAD1_SI_esi(int esi)
    {
        return esi & 0xffff;
    }

    public static int reg1_nef_LOAD1_DI_edi(int edi)
    {
        return edi & 0xffff;
    }

    public static int reg1_nef_LOAD1_EAX_eax(int eax)
    {
        return eax;
    }

    public static int reg1_nef_LOAD1_ECX_ecx(int ecx)
    {
        return ecx;
    }

    public static int reg1_nef_LOAD1_EDX_edx(int edx)
    {
        return edx;
    }

    public static int reg1_nef_LOAD1_EBX_ebx(int ebx)
    {
        return ebx;
    }

    public static int reg1_nef_LOAD1_ESP_esp(int esp)
    {
        return esp;
    }

    public static int reg1_nef_LOAD1_EBP_ebp(int ebp)
    {
        return ebp;
    }

    public static int reg1_nef_LOAD1_ESI_esi(int esi)
    {
        return esi;
    }

    public static int reg1_nef_LOAD1_EDI_edi(int edi)
    {
        return edi;
    }

    public static int reg1_nef_LOAD1_IB_immediate(int immediate)
    {
        return immediate & 0xff; 
    }

    public static int reg1_nef_LOAD1_IW_immediate(int immediate)
    {
        return immediate & 0xffff; 
    }

    public static int reg1_nef_LOAD1_ID_immediate(int immediate)
    {
        return immediate; 
    }

    public static int reg1_hef_LOAD1_MEM_BYTE_seg0_addr0(Segment seg0, int addr0)
    {
        return 0xff & seg0.getByte(addr0);
    }

    public static int reg1_hef_LOAD1_MEM_WORD_seg0_addr0(Segment seg0, int addr0)
    {
        return 0xffff & seg0.getWord(addr0);
    }

    public static int reg1_hef_LOAD1_MEM_DWORD_seg0_addr0(Segment seg0, int addr0)
    {
        return seg0.getDoubleWord(addr0);
    }

    public static int reg2_nef_LOAD2_EAX_eax(int eax)
    {
	return eax;
    }

    public static int reg2_nef_LOAD2_AX_eax(int eax)
    {
	return 0xffff & eax;
    }

    public static int reg2_nef_LOAD2_AL_eax(int eax)
    {
	return 0xff & eax;
    }

    public static int reg2_nef_LOAD2_CL_ecx(int ecx)
    {
	return 0xff & ecx;
    }
    
    public static int reg2_nef_LOAD2_IB_immediate(int immediate)
    {
	return immediate & 0xff;
    }

    public static Segment seg0_nef_LOAD_SEG_CS_cs(Segment cs)
    {
        return cs;
    }

    public static Segment seg0_nef_LOAD_SEG_DS_ds(Segment ds)
    {
        return ds;
    }

    public static Segment seg0_nef_LOAD_SEG_ES_es(Segment es)
    {
        return es;
    }

    public static Segment seg0_nef_LOAD_SEG_FS_fs(Segment fs)
    {
        return fs;
    }

    public static Segment seg0_nef_LOAD_SEG_GS_gs(Segment gs)
    {
        return gs;
    }

    public static Segment seg0_nef_LOAD_SEG_SS_ss(Segment ss)
    {
        return ss;
    }

    public static int eax_nef_STORE0_AL_eax_reg0(int eax, int reg0)
    {
        return (eax & ~0xff) | (reg0 & 0xff);
    }

    public static int ecx_nef_STORE0_CL_ecx_reg0(int ecx, int reg0)
    {
        return (ecx & ~0xff) | (reg0 & 0xff);
    }

    public static int edx_nef_STORE0_DL_edx_reg0(int edx, int reg0)
    {
        return (edx & ~0xff) | (reg0 & 0xff);
    }

    public static int ebx_nef_STORE0_BL_ebx_reg0(int ebx, int reg0)
    {
        return (ebx & ~0xff) | (reg0 & 0xff);
    }

    public static int eax_nef_STORE0_AH_eax_reg0(int eax, int reg0)
    {
        return (eax & ~0xff00) | ((reg0 << 8) & 0xff00);
    }

    public static int ecx_nef_STORE0_CH_ecx_reg0(int ecx, int reg0)
    {
        return (ecx & ~0xff00) | ((reg0 << 8) & 0xff00);
    }

    public static int edx_nef_STORE0_DH_edx_reg0(int edx, int reg0)
    {
        return (edx & ~0xff00) | ((reg0 << 8) & 0xff00);
    }

    public static int ebx_nef_STORE0_BH_ebx_reg0(int ebx, int reg0)
    {
        return (ebx & ~0xff00) | ((reg0 << 8) & 0xff00);
    }

    public static int eax_nef_STORE0_AX_eax_reg0(int eax, int reg0)
    {
        return (eax & ~0xffff) | (reg0 & 0xffff);
    }

    public static int ecx_nef_STORE0_CX_ecx_reg0(int ecx, int reg0)
    {
        return (ecx & ~0xffff) | (reg0 & 0xffff);
    }

    public static int edx_nef_STORE0_DX_edx_reg0(int edx, int reg0)