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gdbremote.h

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/*
 * Copyright (C) 2001-2003 Stephane Magnenat & Julien Pilet.  
 * For any question or comment contact us at nct@ysagoon.com
 * or leto@calodox.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _GDBREMOTE_H_
#define _GDBREMOTE_H_

#include <assert.h>
#include "tcp.h"
#include <map>

#define GDB_REMOTE_DEFAULT_PORT 3141
#define GDB_REMOTE_BUFFER_SIZE (32 * 1024)

#define BKPT_0_INSTR 0xe1200070 

class JTAGpxa250;

class GdbRemote { 
public:

        GdbRemote(JTAGpxa250 *pxa);
        ~GdbRemote();

        bool openPort(int port = GDB_REMOTE_DEFAULT_PORT);

        int prepareFD_SET(fd_set *set);

        void processFD_SET(fd_set *set);

        void printError();

private:
        JTAGpxa250 *pxa;
        int clientSocket;       
        bool running;
        unsigned int hardBreak[2];

        unsigned char buffer[GDB_REMOTE_BUFFER_SIZE];   

        char message[GDB_REMOTE_BUFFER_SIZE];
        int bufferLength;
        int ptr;
        void reset() { ptr = 0; }
        unsigned char current() { return buffer[ptr]; }
        bool next() { ++ptr; assert(ptr<GDB_REMOTE_BUFFER_SIZE); return ptr < bufferLength; }

        void sendPacket();
        void parse();
        void parsePacket();
        void parseValidPacket();
        static unsigned char toAsciiHex(unsigned int v);
        static unsigned char asciiToHex(unsigned char c);
        static void hexPrintWord(unsigned char *str, unsigned int val);
        unsigned int parseHexWord();
        unsigned int parseHexByte();

        static void callback(void *p);

        void resumeExec();
        void query();
        void lastSignal();
        void setThread();
        void getRegisters();
        void setRegisters();
        void readMem();
        void writeMem();
        void cont();
        void insertBreakWatch();
        void removeBreakWatch();
        void step();
};

#endif // _GDB_REMOTE_H_

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