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[/] [ao486/] [trunk/] [ao486_tool/] [src/] [ao486/] [module/] [memory/] [ReadListener.java] - Blame information for rev 2

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1 2 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.module.memory;
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import java.util.HashMap;
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public class ReadListener implements Listener {
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    public interface ReadInterface {
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        void read(int cycle, long data) throws Exception;
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        void read_page_fault(int cycle, long cr2, long error_code) throws Exception;
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        void read_ac_fault(int cycle) throws Exception;
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    }
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    public void read(int cycle, long cpl, long address, long length, boolean lock, boolean rmw, ReadInterface read_interface) throws Exception {
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        if(map.containsKey(cycle)) throw new Exception("Double read in cycle: " + cycle);
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        Input input = new Input();
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        input.read_address = address;
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        input.read_cpl     = cpl;
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        input.read_length  = length;
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        input.read_lock    = lock;
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        input.read_rmw     = rmw;
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        map.put(cycle, input);
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        read_map.put(cycle, read_interface);
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    }
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    //------------------------------
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    @Override
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    public void set_input(int cycle, Input input) throws Exception {
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        if(read != null && map.containsKey(cycle)) throw new Exception("Overlapping read detected on cycle " + cycle);
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        if(read != null) {
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            input.read_do       = true;
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            input.read_cpl      = read_input.read_cpl;
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            input.read_address  = read_input.read_address;
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            input.read_length   = read_input.read_length;
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            input.read_lock     = read_input.read_lock;
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            input.read_rmw      = read_input.read_rmw;
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        }
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        Input local_input = map.get(cycle);
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        if(local_input != null) {
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            read = read_map.get(cycle);
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            input.read_do       = true;
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            input.read_cpl      = local_input.read_cpl;
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            input.read_address  = local_input.read_address;
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            input.read_length   = local_input.read_length;
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            input.read_lock     = local_input.read_lock;
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            input.read_rmw      = local_input.read_rmw;
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            read_input = input;
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        }
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    }
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    @Override
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    public void get_output(int cycle, Output output) throws Exception {
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        if(read == null && output.read_page_fault == false && (output.read_done || output.read_page_fault || output.read_ac_fault)) throw new Exception("Unexpected read done.");
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        if(output.read_done       && output.read_page_fault)    throw new Exception("Double read result.");
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        if(output.read_done       && output.read_ac_fault)      throw new Exception("Double read result.");
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        if(output.read_page_fault && output.read_ac_fault)      throw new Exception("Double read result.");
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        if(read != null && output.read_done) {
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            read.read(cycle, output.read_data);
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            read = null;
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        }
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        if(read != null && output.read_page_fault) {
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            read.read_page_fault(cycle, output.tlb_read_pf_cr2, output.tlb_read_pf_error_code);
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            read = null;
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        }
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        if(read != null && output.read_ac_fault) {
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            read.read_ac_fault(cycle);
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            read = null;
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        }
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    }
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    /*
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    //Input
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    boolean read_do                         = false;
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    long    read_cpl                        = 0; //2
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    long    read_address                    = 0; //32
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    long    read_length                     = 0; //4
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    boolean read_lock                       = false;
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    boolean read_rmw                        = false;
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    //Output
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    boolean read_done;
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    boolean read_page_fault;
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    boolean read_ac_fault;
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    long    read_data; //64
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    */
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    ReadInterface read;
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    Input         read_input;
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    HashMap<Integer, Input> map              = new HashMap<>();
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    HashMap<Integer, ReadInterface> read_map = new HashMap<>();
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}

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