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https://opencores.org/ocsvn/ao486/ao486/trunk
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[/] [ao486/] [trunk/] [ao486_tool/] [src/] [ao486/] [test/] [layers/] [TSSCurrentLayer.java] - Rev 2
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/* * 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.layers; import java.util.HashMap; import java.util.LinkedList; import java.util.Random; public class TSSCurrentLayer extends Layer { public TSSCurrentLayer(Random random, Type type, int limit, int selector, LinkedList<Pair<Long, Long>> prohibited_list) { this.random = random; this.type = type; for(Pair<Long, Long> pair : prohibited_list) { System.out.printf("proh: %08x : %08x\n", pair.a, pair.b); } while(true) { tr_base = norm(random.nextInt()); if(tr_base + tr_limit >= 0x100000000L) continue; if(collides(prohibited_list, tr_base, tr_base + limit) == false) break; } prohibited_list.add(new Pair<>(tr_base, tr_base + limit)); tr_limit = limit; System.out.printf("TSSCurrentLayer: base: %08x, base+limit: %08x\n", tr_base, tr_base+tr_limit); tr_map.put(tr_base+0, (byte)(selector & 0xFF)); tr_map.put(tr_base+1, (byte)((selector >> 8) & 0xFF)); } public void add_ss_esp(int pl, long esp, int ss) { int offset = (type == Type.ACTIVE_286 || type == Type.BUSY_286)? 2 + pl*4 : 4 + pl*8; if(type == Type.ACTIVE_286 || type == Type.BUSY_286) { tr_map.put(tr_base+offset+0, (byte)(esp & 0xFF)); tr_map.put(tr_base+offset+1, (byte)((esp >> 8) & 0xFF)); tr_map.put(tr_base+offset+2, (byte)(ss & 0xFF)); tr_map.put(tr_base+offset+3, (byte)((ss >> 8) & 0xFF)); } else { tr_map.put(tr_base+offset+0, (byte)(esp & 0xFF)); tr_map.put(tr_base+offset+1, (byte)((esp >> 8) & 0xFF)); tr_map.put(tr_base+offset+2, (byte)((esp >> 16) & 0xFF)); tr_map.put(tr_base+offset+3, (byte)((esp >> 24) & 0xFF)); tr_map.put(tr_base+offset+4, (byte)(ss & 0xFF)); tr_map.put(tr_base+offset+5, (byte)((ss >> 8) & 0xFF)); tr_map.put(tr_base+offset+6, (byte)random.nextInt()); tr_map.put(tr_base+offset+7, (byte)random.nextInt()); } } public enum Type { BUSY_386, BUSY_286, ACTIVE_386, ACTIVE_286 } long tr_limit; long tr_base; Type type; //----------- public long tr_base() { return tr_base; } public long tr_limit() { return tr_limit; } public long tr_type() throws Exception { //was: return 0xB; if(type == Type.BUSY_286) return 0x3; if(type == Type.ACTIVE_286) return 0x1; if(type == Type.BUSY_386) return 0xB; if(type == Type.ACTIVE_386) return 0x9; throw new Exception("Invalid TSS type: " + type); } public boolean is_memory_not_random(long address) { return tr_map.containsKey(address); } public Byte get_memory(long address) { if(address < tr_base || address > tr_base + tr_limit) return null; if(tr_map.containsKey(address)) return tr_map.get(address); return (byte)random.nextInt(); } HashMap<Long, Byte> tr_map = new HashMap<>(); }