URL
https://opencores.org/ocsvn/ao486/ao486/trunk
Subversion Repositories ao486
[/] [ao486/] [trunk/] [ao486_tool/] [src/] [ao486/] [module/] [memory/] [CheckListener.java] - Rev 2
Compare with Previous | Blame | View Log
/* * 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.module.memory; import java.util.HashMap; public class CheckListener implements Listener { public interface CheckInterface { void checked(int cycle) throws Exception; void check_page_fault(int cycle, long cr2, long error_code) throws Exception; } public void check(int cycle, long address, boolean write, CheckInterface check_interface) throws Exception { if(map.containsKey(cycle)) throw new Exception("Double check in cycle: " + cycle); Input input = new Input(); input.tlbcheck_address = address; input.tlbcheck_rw = write; map.put(cycle, input); check_map.put(cycle, check_interface); } //------------------------------ @Override public void set_input(int cycle, Input input) throws Exception { if(check != null && map.containsKey(cycle)) throw new Exception("Overlapping check detected on cycle " + cycle); if(check != null) { input.tlbcheck_do = true; input.tlbcheck_address = check_input.tlbcheck_address; input.tlbcheck_rw = check_input.tlbcheck_rw; } Input local_input = map.get(cycle); if(local_input != null) { check = check_map.get(cycle); input.tlbcheck_do = true; input.tlbcheck_address = local_input.tlbcheck_address; input.tlbcheck_rw = local_input.tlbcheck_rw; check_input = input; } } @Override public void get_output(int cycle, Output output) throws Exception { if(check == null && output.tlbcheck_page_fault == false && (output.tlbcheck_done || output.tlbcheck_page_fault)) throw new Exception("Unexpected check done."); if(output.tlbcheck_done && output.tlbcheck_page_fault) throw new Exception("Double read result."); if(check != null && output.tlbcheck_done) { check.checked(cycle); check = null; } if(check != null && output.tlbcheck_page_fault) { check.check_page_fault(cycle, output.tlb_check_pf_cr2, output.tlb_check_pf_error_code); check = null; } } /* //Input public boolean tlbcheck_do = false; public long tlbcheck_address = 0; //32 public boolean tlbcheck_rw = false; //Output public boolean tlbcheck_done; public boolean tlbcheck_page_fault; */ CheckInterface check; Input check_input; HashMap<Integer, Input> map = new HashMap<>(); HashMap<Integer, CheckInterface> check_map = new HashMap<>(); }