Subversion Repositories openrisc_2011-10-31

/*  gdbhost.c -- ARMulator RDP to gdb comms code:  ARM6 Instruction Emulator.

    Copyright (C) 1994 Advanced RISC Machines Ltd.

    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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */

/***********************************************************/

/* Functions that communicate info back to the debugger... */

/***********************************************************/

#include <stdio.h>

#include <stdarg.h>

#include "armdefs.h"

#include "communicate.h"

#include "dbg_rdi.h"

#include "armos.h"

#define OS_SendNothing 0x0

#define OS_SendChar 0x1

#define OS_SendWord 0x2

#define OS_SendString 0x3

/* Defined in kid.c */

extern int wait_for_osreply (ARMword * reply);

/* A pipe for handling SWI return values that goes straight from the */

/* parent to the ARMulator host interface, bypassing the childs RDP */

/* to RDI interpreter */

int DebuggerARMul[2];

/* The pipes between the two processes */

int mumkid[2];

int kidmum[2];

void

myprint (void *arg, const char *format, va_list ap)

{

#ifdef DEBUG

  fprintf (stderr, "Host: myprint\n");

#endif

  vfprintf (stderr, format, ap);

}

/* Waits for a keypress on the debuggers' keyboard */

void

mypause (void *arg)

{

#ifdef DEBUG

  fprintf (stderr, "Host: mypause\n");

#endif

}                               /* I do love exciting functions */

void

mywritec (void *arg, int c)

{

#ifdef DEBUG

  fprintf (stderr, "Mywrite : %c\n", c);

#endif

  MYwrite_char (kidmum[1], RDP_OSOp);   /* OS Operation Request Message */

  MYwrite_word (kidmum[1], SWI_WriteC); /* Print... */

  MYwrite_char (kidmum[1], OS_SendChar);        /*  ...a single character */

  MYwrite_char (kidmum[1], (unsigned char) c);

  wait_for_osreply ((ARMword *) 0);

}

int

myreadc (void *arg)

{

  char c;

  ARMword x;

#ifdef DEBUG

  fprintf (stderr, "Host: myreadc\n");

#endif

  MYwrite_char (kidmum[1], RDP_OSOp);   /* OS Operation Request Message */

  MYwrite_word (kidmum[1], SWI_ReadC);  /* Read... */

  MYwrite_char (kidmum[1], OS_SendNothing);

  c = wait_for_osreply (&x);

  return (x);

}

int

mywrite (void *arg, char const *buffer, int len)

{

#ifdef DEBUG

  fprintf (stderr, "Host: mywrite\n");

#endif

  return 0;

}

char *

mygets (void *arg, char *buffer, int len)

{

#ifdef DEBUG

  fprintf (stderr, "Host: mygets\n");

#endif

  return buffer;

}