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alfik |
/*
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* Copyright (c) 2014, Aleksander Osman
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package ao486.test.other;
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import ao486.test.TestUnit;
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import static ao486.test.TestUnit.run_test;
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import ao486.test.layers.FlagsLayer;
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import ao486.test.layers.GeneralRegisterLayer;
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import ao486.test.layers.HandleModeChangeLayer;
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import ao486.test.layers.IOLayer;
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import ao486.test.layers.InstructionLayer;
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import ao486.test.layers.Layer;
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import ao486.test.layers.MemoryLayer;
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import ao486.test.layers.OtherLayer;
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import ao486.test.layers.Pair;
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import ao486.test.layers.SegmentLayer;
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import ao486.test.layers.StackLayer;
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import java.io.*;
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import java.util.LinkedList;
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import java.util.Random;
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public class TestAddressingModes extends TestUnit implements Serializable {
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public static void main(String args[]) throws Exception {
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run_test(TestAddressingModes.class);
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}
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//--------------------------------------------------------------------------
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@Override
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public int get_test_count() throws Exception {
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//16-bit: 256
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//32-bit: 256-8*3 + 8*3*256 = 256 + 8*3*255
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return REPEAT * (256 + 256-8*3 + 8*3*256);
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}
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static final int REPEAT = 1;
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static int current_repeat = 0;
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static int current_16bit = 0;
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static int current_32bit = 0;
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static int current_32bit_sib = 0;
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static int current_run = 0;
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void update() {
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if(current_repeat == REPEAT-1) {
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current_repeat = 0;
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if(current_16bit == 256) {
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if(current_32bit == 256-1) { System.out.println("[TestAddressingModes]: tested all."); }
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else {
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boolean sib = is_sib();
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if(sib && current_32bit_sib == 256-1) {
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current_32bit_sib = 0;
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current_32bit++;
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}
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else if(sib) {
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current_32bit_sib++;
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}
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else {
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current_32bit++;
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}
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}
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}
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else current_16bit++;
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}
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else current_repeat++;
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}
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boolean is_sib() {
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return current_16bit == 256 && ((current_32bit >> 6) & 0x3) != 3 && (current_32bit & 0x7) == 4;
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}
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int modregrm_len() {
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boolean a16 = current_16bit < 256;
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int modregrm = (a16)? current_16bit : current_32bit;
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int mod = (modregrm >> 6) & 3;
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int rm = modregrm & 7;
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int base = current_32bit_sib & 7;
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// d_CRx_DRx_condition ignored
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if(a16 && mod == 0 && rm == 6) return 3;
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if(a16 && mod == 1) return 2;
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if(a16 && mod == 2) return 3;
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if(a16) return 1;
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if(mod == 0 && rm == 5) return 5;
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if(mod == 0 && rm == 4 && base == 5) return 6;
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if(mod == 0 && rm == 4) return 2;
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if(mod == 1 && rm == 4) return 3;
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if(mod == 1) return 2;
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if(mod == 2 && rm == 4) return 6;
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if(mod == 2) return 5;
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return 1;
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}
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@Override
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public void init() throws Exception {
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random = new Random(10 + index);
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System.out.println("[current_repeat (" + current_repeat + ") " +
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"[current_16bit (" + current_16bit + ") " +
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"[current_32bit (" + current_32bit + ") " +
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"[current_32bit_sib(" + current_32bit_sib + ")]");
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String instruction;
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layers.clear();
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LinkedList<Pair<Long, Long>> prohibited_list = new LinkedList<>();
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// if false: v8086 mode
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boolean is_real = true;
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InstructionLayer instr = new InstructionLayer(random, prohibited_list, true);
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layers.add(instr);
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StackLayer stack = new StackLayer(random, prohibited_list);
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layers.add(stack);
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layers.add(new OtherLayer(is_real ? OtherLayer.Type.REAL : OtherLayer.Type.PROTECTED_OR_V8086, random));
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layers.add(new FlagsLayer(is_real ? FlagsLayer.Type.RANDOM : FlagsLayer.Type.V8086, random));
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layers.add(new GeneralRegisterLayer(random));
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layers.add(new SegmentLayer(random));
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layers.add(new MemoryLayer(random));
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layers.add(new IOLayer(random));
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layers.addFirst(new HandleModeChangeLayer(
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getInput("cr0_pe"),
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getInput("vmflag"),
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getInput("cs_rpl"),
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getInput("cs_p"),
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getInput("cs_s"),
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getInput("cs_type")
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));
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int d_b = 0;
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if(current_16bit == 256) d_b = 1;
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final int d_b_final = d_b;
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Layer layer = new Layer() {
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long cs_d_b() { return d_b_final; }
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};
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layers.addFirst(layer);
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byte bytes[] = hexToBytes("000000000000000000000000000000");
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if(current_16bit < 256) bytes[1] = (byte)current_16bit;
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else bytes[1] = (byte)current_32bit;
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if(is_sib()) {
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bytes[2] = (byte)current_32bit_sib;
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for(int i=0; i<modregrm_len()-2; i++) bytes[3+i] = (byte)random.nextInt();
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}
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else {
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for(int i=0; i<modregrm_len()-1; i++) bytes[2+i] = (byte)random.nextInt();
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}
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int final_size = modregrm_len()+1;
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byte final_bytes[] = new byte[final_size];
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System.arraycopy(bytes, 0, final_bytes, 0, final_size);
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instruction = bytesToHex(final_bytes) + "0F0F0F0F0F0F0F";
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instr.add_instruction(instruction);
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System.out.println("[get_instructions: " + instruction + "]");
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//---------------------------------------------------------------------- update
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current_run++;
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if(current_run == 2) {
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update();
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current_run = 0;
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}
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}
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}
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