Subversion Repositories ao486

/*

 * Copyright (c) 2014, Aleksander Osman

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * * Redistributions of source code must retain the above copyright notice, this

 *   list of conditions and the following disclaimer.

 *

 * * Redistributions in binary form must reproduce the above copyright notice,

 *   this list of conditions and the following disclaimer in the documentation

 *   and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

package ao486.test.other;

import ao486.test.TestUnit;

import static ao486.test.TestUnit.run_test;

import ao486.test.layers.FlagsLayer;

import ao486.test.layers.GeneralRegisterLayer;

import ao486.test.layers.HandleModeChangeLayer;

import ao486.test.layers.IOLayer;

import ao486.test.layers.InstructionLayer;

import ao486.test.layers.Layer;

import ao486.test.layers.MemoryLayer;

import ao486.test.layers.OtherLayer;

import ao486.test.layers.Pair;

import ao486.test.layers.SegmentLayer;

import ao486.test.layers.StackLayer;

import java.io.*;

import java.util.LinkedList;

import java.util.Random;

public class TestAddressingModes extends TestUnit implements Serializable {

    public static void main(String args[]) throws Exception {

        run_test(TestAddressingModes.class);

    }

    //--------------------------------------------------------------------------

    @Override

    public int get_test_count() throws Exception {

        //16-bit: 256

        //32-bit: 256-8*3 + 8*3*256 = 256 + 8*3*255

        return REPEAT * (256 + 256-8*3 + 8*3*256);

    }

    static final int REPEAT = 1;

    static int current_repeat      = 0;

    static int current_16bit       = 0;

    static int current_32bit       = 0;

    static int current_32bit_sib   = 0;

    static int current_run = 0;

    void update() {

        if(current_repeat == REPEAT-1) {

            current_repeat = 0;

            if(current_16bit == 256) {

                if(current_32bit == 256-1) { System.out.println("[TestAddressingModes]: tested all."); }

                else {

                    boolean sib = is_sib();

                    if(sib && current_32bit_sib == 256-1) {

                        current_32bit_sib = 0;

                        current_32bit++;

                    }

                    else if(sib) {

                        current_32bit_sib++;

                    }

                    else {

                        current_32bit++;

                    }

                }

            }

            else current_16bit++;

        }

        else current_repeat++;

    }

    boolean is_sib() {

        return current_16bit == 256 && ((current_32bit >> 6) & 0x3) != 3 && (current_32bit & 0x7) == 4;

    }

    int modregrm_len() {

        boolean a16  = current_16bit < 256;

        int modregrm = (a16)? current_16bit : current_32bit;

        int mod      = (modregrm >> 6) & 3;

        int rm       = modregrm & 7;

        int base     = current_32bit_sib & 7;

        // d_CRx_DRx_condition ignored

        if(a16 && mod == 0 && rm == 6) return 3;

        if(a16 && mod == 1) return 2;

        if(a16 && mod == 2) return 3;

        if(a16) return 1;

        if(mod == 0 && rm == 5) return 5;

        if(mod == 0 && rm == 4 && base == 5) return 6;

        if(mod == 0 && rm == 4) return 2;

        if(mod == 1 && rm == 4) return 3;

        if(mod == 1) return 2;

        if(mod == 2 && rm == 4) return 6;

        if(mod == 2) return 5;

        return 1;

    }

    @Override

    public void init() throws Exception {

        random = new Random(10 + index);

System.out.println("[current_repeat   (" + current_repeat    + ") " +

                   "[current_16bit    (" + current_16bit     + ") " +

                   "[current_32bit    (" + current_32bit     + ") " +

                   "[current_32bit_sib(" + current_32bit_sib + ")]");

        String instruction;

        layers.clear();

        LinkedList<Pair<Long, Long>> prohibited_list = new LinkedList<>();

        // if false: v8086 mode

        boolean is_real = true;

        InstructionLayer instr  = new InstructionLayer(random, prohibited_list, true);

        layers.add(instr);

        StackLayer stack        = new StackLayer(random, prohibited_list);

        layers.add(stack);

        layers.add(new OtherLayer(is_real ? OtherLayer.Type.REAL : OtherLayer.Type.PROTECTED_OR_V8086, random));

        layers.add(new FlagsLayer(is_real ? FlagsLayer.Type.RANDOM : FlagsLayer.Type.V8086, random));

        layers.add(new GeneralRegisterLayer(random));

        layers.add(new SegmentLayer(random));

        layers.add(new MemoryLayer(random));

        layers.add(new IOLayer(random));

        layers.addFirst(new HandleModeChangeLayer(

                getInput("cr0_pe"),

                getInput("vmflag"),

                getInput("cs_rpl"),

                getInput("cs_p"),

                getInput("cs_s"),

                getInput("cs_type")

        ));

        int d_b = 0;

        if(current_16bit == 256) d_b = 1;

        final int d_b_final = d_b;

        Layer layer = new Layer() {

            long cs_d_b()      { return d_b_final; }

        };

        layers.addFirst(layer);

        byte bytes[] = hexToBytes("000000000000000000000000000000");

        if(current_16bit < 256) bytes[1] = (byte)current_16bit;

        else                    bytes[1] = (byte)current_32bit;

        if(is_sib()) {

            bytes[2] = (byte)current_32bit_sib;

            for(int i=0; i<modregrm_len()-2; i++) bytes[3+i] = (byte)random.nextInt();

        }

        else {

            for(int i=0; i<modregrm_len()-1; i++) bytes[2+i] = (byte)random.nextInt();

        }

        int final_size = modregrm_len()+1;

        byte final_bytes[] = new byte[final_size];

        System.arraycopy(bytes, 0, final_bytes, 0, final_size);

        instruction = bytesToHex(final_bytes) + "0F0F0F0F0F0F0F";

        instr.add_instruction(instruction);

System.out.println("[get_instructions: " + instruction + "]");

        //---------------------------------------------------------------------- update

        current_run++;

        if(current_run == 2) {

            update();

            current_run = 0;

        }

    }

}