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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [remote-utils.c] - Diff between revs 105 and 1765

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Rev 105 Rev 1765
/* Generic support for remote debugging interfaces.
/* Generic support for remote debugging interfaces.
 
 
   Copyright 1993, 1994, 1998 Free Software Foundation, Inc.
   Copyright 1993, 1994, 1998 Free Software Foundation, Inc.
 
 
   This file is part of GDB.
   This file is part of GDB.
 
 
   This program is free software; you can redistribute it and/or modify
   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
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   (at your option) any later version.
 
 
   This program is distributed in the hope that it will be useful,
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   GNU General Public License for more details.
 
 
   You should have received a copy of the GNU General Public License
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */
   Boston, MA 02111-1307, USA.  */
 
 
/*  This file actually contains two distinct logical "packages".  They
/*  This file actually contains two distinct logical "packages".  They
   are packaged together in this one file because they are typically
   are packaged together in this one file because they are typically
   used together.
   used together.
 
 
   The first package is an addition to the serial package.  The
   The first package is an addition to the serial package.  The
   addition provides reading and writing with debugging output and
   addition provides reading and writing with debugging output and
   timeouts based on user settable variables.  These routines are
   timeouts based on user settable variables.  These routines are
   intended to support serial port based remote backends.  These
   intended to support serial port based remote backends.  These
   functions are prefixed with sr_.
   functions are prefixed with sr_.
 
 
   The second package is a collection of more or less generic
   The second package is a collection of more or less generic
   functions for use by remote backends.  They support user settable
   functions for use by remote backends.  They support user settable
   variables for debugging, retries, and the like.
   variables for debugging, retries, and the like.
 
 
   Todo:
   Todo:
 
 
   * a pass through mode a la kermit or telnet.
   * a pass through mode a la kermit or telnet.
   * autobaud.
   * autobaud.
   * ask remote to change his baud rate.
   * ask remote to change his baud rate.
 */
 */
 
 
#include <ctype.h>
#include <ctype.h>
 
 
#include "defs.h"
#include "defs.h"
#include "gdb_string.h"
#include "gdb_string.h"
#include "gdbcmd.h"
#include "gdbcmd.h"
#include "target.h"
#include "target.h"
#include "serial.h"
#include "serial.h"
#include "gdbcore.h"            /* for exec_bfd */
#include "gdbcore.h"            /* for exec_bfd */
#include "inferior.h"           /* for generic_mourn_inferior */
#include "inferior.h"           /* for generic_mourn_inferior */
#include "remote-utils.h"
#include "remote-utils.h"
 
 
 
 
void _initialize_sr_support PARAMS ((void));
void _initialize_sr_support PARAMS ((void));
 
 
struct _sr_settings sr_settings =
struct _sr_settings sr_settings =
{
{
  4,                            /* timeout:
  4,                            /* timeout:
                                   remote-hms.c had 2
                                   remote-hms.c had 2
                                   remote-bug.c had "with a timeout of 2, we time out waiting for
                                   remote-bug.c had "with a timeout of 2, we time out waiting for
                                   the prompt after an s-record dump."
                                   the prompt after an s-record dump."
 
 
                                   remote.c had (2): This was 5 seconds, which is a long time to
                                   remote.c had (2): This was 5 seconds, which is a long time to
                                   sit and wait. Unless this is going though some terminal server
                                   sit and wait. Unless this is going though some terminal server
                                   or multiplexer or other form of hairy serial connection, I
                                   or multiplexer or other form of hairy serial connection, I
                                   would think 2 seconds would be plenty.
                                   would think 2 seconds would be plenty.
                                 */
                                 */
 
 
  10,                           /* retries */
  10,                           /* retries */
  NULL,                         /* device */
  NULL,                         /* device */
  NULL,                         /* descriptor */
  NULL,                         /* descriptor */
};
};
 
 
struct gr_settings *gr_settings = NULL;
struct gr_settings *gr_settings = NULL;
 
 
static void usage PARAMS ((char *, char *));
static void usage PARAMS ((char *, char *));
static void sr_com PARAMS ((char *, int));
static void sr_com PARAMS ((char *, int));
 
 
static void
static void
usage (proto, junk)
usage (proto, junk)
     char *proto;
     char *proto;
     char *junk;
     char *junk;
{
{
  if (junk != NULL)
  if (junk != NULL)
    fprintf_unfiltered (gdb_stderr, "Unrecognized arguments: `%s'.\n", junk);
    fprintf_unfiltered (gdb_stderr, "Unrecognized arguments: `%s'.\n", junk);
 
 
  error ("Usage: target %s [DEVICE [SPEED [DEBUG]]]\n\
  error ("Usage: target %s [DEVICE [SPEED [DEBUG]]]\n\
where DEVICE is the name of a device or HOST:PORT", proto, proto);
where DEVICE is the name of a device or HOST:PORT", proto, proto);
 
 
  return;
  return;
}
}
 
 
#define CHECKDONE(p, q) \
#define CHECKDONE(p, q) \
{ \
{ \
  if (q == p) \
  if (q == p) \
    { \
    { \
      if (*p == '\0') \
      if (*p == '\0') \
        return; \
        return; \
      else \
      else \
        usage(proto, p); \
        usage(proto, p); \
    } \
    } \
}
}
 
 
void
void
sr_scan_args (proto, args)
sr_scan_args (proto, args)
     char *proto;
     char *proto;
     char *args;
     char *args;
{
{
  int n;
  int n;
  char *p, *q;
  char *p, *q;
 
 
  /* if no args, then nothing to do. */
  /* if no args, then nothing to do. */
  if (args == NULL || *args == '\0')
  if (args == NULL || *args == '\0')
    return;
    return;
 
 
  /* scan off white space.  */
  /* scan off white space.  */
  for (p = args; isspace (*p); ++p);;
  for (p = args; isspace (*p); ++p);;
 
 
  /* find end of device name.  */
  /* find end of device name.  */
  for (q = p; *q != '\0' && !isspace (*q); ++q);;
  for (q = p; *q != '\0' && !isspace (*q); ++q);;
 
 
  /* check for missing or empty device name.  */
  /* check for missing or empty device name.  */
  CHECKDONE (p, q);
  CHECKDONE (p, q);
  sr_set_device (savestring (p, q - p));
  sr_set_device (savestring (p, q - p));
 
 
  /* look for baud rate.  */
  /* look for baud rate.  */
  n = strtol (q, &p, 10);
  n = strtol (q, &p, 10);
 
 
  /* check for missing or empty baud rate.  */
  /* check for missing or empty baud rate.  */
  CHECKDONE (p, q);
  CHECKDONE (p, q);
  baud_rate = n;
  baud_rate = n;
 
 
  /* look for debug value.  */
  /* look for debug value.  */
  n = strtol (p, &q, 10);
  n = strtol (p, &q, 10);
 
 
  /* check for missing or empty debug value.  */
  /* check for missing or empty debug value.  */
  CHECKDONE (p, q);
  CHECKDONE (p, q);
  sr_set_debug (n);
  sr_set_debug (n);
 
 
  /* scan off remaining white space.  */
  /* scan off remaining white space.  */
  for (p = q; isspace (*p); ++p);;
  for (p = q; isspace (*p); ++p);;
 
 
  /* if not end of string, then there's unrecognized junk. */
  /* if not end of string, then there's unrecognized junk. */
  if (*p != '\0')
  if (*p != '\0')
    usage (proto, p);
    usage (proto, p);
 
 
  return;
  return;
}
}
 
 
void
void
gr_generic_checkin ()
gr_generic_checkin ()
{
{
  sr_write_cr ("");
  sr_write_cr ("");
  gr_expect_prompt ();
  gr_expect_prompt ();
}
}
 
 
void
void
gr_open (args, from_tty, gr)
gr_open (args, from_tty, gr)
     char *args;
     char *args;
     int from_tty;
     int from_tty;
     struct gr_settings *gr;
     struct gr_settings *gr;
{
{
  target_preopen (from_tty);
  target_preopen (from_tty);
  sr_scan_args (gr->ops->to_shortname, args);
  sr_scan_args (gr->ops->to_shortname, args);
  unpush_target (gr->ops);
  unpush_target (gr->ops);
 
 
  gr_settings = gr;
  gr_settings = gr;
 
 
  gr_set_dcache (dcache_init (gr->readfunc, gr->writefunc));
  gr_set_dcache (dcache_init (gr->readfunc, gr->writefunc));
 
 
  if (sr_get_desc () != NULL)
  if (sr_get_desc () != NULL)
    gr_close (0);
    gr_close (0);
 
 
  /* If no args are specified, then we use the device specified by a
  /* If no args are specified, then we use the device specified by a
     previous command or "set remotedevice".  But if there is no
     previous command or "set remotedevice".  But if there is no
     device, better stop now, not dump core.  */
     device, better stop now, not dump core.  */
 
 
  if (sr_get_device () == NULL)
  if (sr_get_device () == NULL)
    usage (gr->ops->to_shortname, NULL);
    usage (gr->ops->to_shortname, NULL);
 
 
  sr_set_desc (SERIAL_OPEN (sr_get_device ()));
  sr_set_desc (SERIAL_OPEN (sr_get_device ()));
  if (!sr_get_desc ())
  if (!sr_get_desc ())
    perror_with_name ((char *) sr_get_device ());
    perror_with_name ((char *) sr_get_device ());
 
 
  if (baud_rate != -1)
  if (baud_rate != -1)
    {
    {
      if (SERIAL_SETBAUDRATE (sr_get_desc (), baud_rate) != 0)
      if (SERIAL_SETBAUDRATE (sr_get_desc (), baud_rate) != 0)
        {
        {
          SERIAL_CLOSE (sr_get_desc ());
          SERIAL_CLOSE (sr_get_desc ());
          perror_with_name (sr_get_device ());
          perror_with_name (sr_get_device ());
        }
        }
    }
    }
 
 
  SERIAL_RAW (sr_get_desc ());
  SERIAL_RAW (sr_get_desc ());
 
 
  /* If there is something sitting in the buffer we might take it as a
  /* If there is something sitting in the buffer we might take it as a
     response to a command, which would be bad.  */
     response to a command, which would be bad.  */
  SERIAL_FLUSH_INPUT (sr_get_desc ());
  SERIAL_FLUSH_INPUT (sr_get_desc ());
 
 
  /* default retries */
  /* default retries */
  if (sr_get_retries () == 0)
  if (sr_get_retries () == 0)
    sr_set_retries (1);
    sr_set_retries (1);
 
 
  /* default clear breakpoint function */
  /* default clear breakpoint function */
  if (gr_settings->clear_all_breakpoints == NULL)
  if (gr_settings->clear_all_breakpoints == NULL)
    gr_settings->clear_all_breakpoints = remove_breakpoints;
    gr_settings->clear_all_breakpoints = remove_breakpoints;
 
 
  if (from_tty)
  if (from_tty)
    {
    {
      printf_filtered ("Remote debugging using `%s'", sr_get_device ());
      printf_filtered ("Remote debugging using `%s'", sr_get_device ());
      if (baud_rate != -1)
      if (baud_rate != -1)
        printf_filtered (" at baud rate of %d",
        printf_filtered (" at baud rate of %d",
                         baud_rate);
                         baud_rate);
      printf_filtered ("\n");
      printf_filtered ("\n");
    }
    }
 
 
  push_target (gr->ops);
  push_target (gr->ops);
  gr_checkin ();
  gr_checkin ();
  gr_clear_all_breakpoints ();
  gr_clear_all_breakpoints ();
  return;
  return;
}
}
 
 
/* Read a character from the remote system masking it down to 7 bits
/* Read a character from the remote system masking it down to 7 bits
   and doing all the fancy timeout stuff.  */
   and doing all the fancy timeout stuff.  */
 
 
int
int
sr_readchar ()
sr_readchar ()
{
{
  int buf;
  int buf;
 
 
  buf = SERIAL_READCHAR (sr_get_desc (), sr_get_timeout ());
  buf = SERIAL_READCHAR (sr_get_desc (), sr_get_timeout ());
 
 
  if (buf == SERIAL_TIMEOUT)
  if (buf == SERIAL_TIMEOUT)
    error ("Timeout reading from remote system.");
    error ("Timeout reading from remote system.");
 
 
  if (sr_get_debug () > 0)
  if (sr_get_debug () > 0)
    printf_unfiltered ("%c", buf);
    printf_unfiltered ("%c", buf);
 
 
  return buf & 0x7f;
  return buf & 0x7f;
}
}
 
 
int
int
sr_pollchar ()
sr_pollchar ()
{
{
  int buf;
  int buf;
 
 
  buf = SERIAL_READCHAR (sr_get_desc (), 0);
  buf = SERIAL_READCHAR (sr_get_desc (), 0);
  if (buf == SERIAL_TIMEOUT)
  if (buf == SERIAL_TIMEOUT)
    buf = 0;
    buf = 0;
  if (sr_get_debug () > 0)
  if (sr_get_debug () > 0)
    {
    {
      if (buf)
      if (buf)
        printf_unfiltered ("%c", buf);
        printf_unfiltered ("%c", buf);
      else
      else
        printf_unfiltered ("<empty character poll>");
        printf_unfiltered ("<empty character poll>");
    }
    }
 
 
  return buf & 0x7f;
  return buf & 0x7f;
}
}
 
 
/* Keep discarding input from the remote system, until STRING is found.
/* Keep discarding input from the remote system, until STRING is found.
   Let the user break out immediately.  */
   Let the user break out immediately.  */
void
void
sr_expect (string)
sr_expect (string)
     char *string;
     char *string;
{
{
  char *p = string;
  char *p = string;
 
 
  immediate_quit = 1;
  immediate_quit = 1;
  while (1)
  while (1)
    {
    {
      if (sr_readchar () == *p)
      if (sr_readchar () == *p)
        {
        {
          p++;
          p++;
          if (*p == '\0')
          if (*p == '\0')
            {
            {
              immediate_quit = 0;
              immediate_quit = 0;
              return;
              return;
            }
            }
        }
        }
      else
      else
        p = string;
        p = string;
    }
    }
}
}
 
 
void
void
sr_write (a, l)
sr_write (a, l)
     char *a;
     char *a;
     int l;
     int l;
{
{
  int i;
  int i;
 
 
  if (SERIAL_WRITE (sr_get_desc (), a, l) != 0)
  if (SERIAL_WRITE (sr_get_desc (), a, l) != 0)
    perror_with_name ("sr_write: Error writing to remote");
    perror_with_name ("sr_write: Error writing to remote");
 
 
  if (sr_get_debug () > 0)
  if (sr_get_debug () > 0)
    for (i = 0; i < l; i++)
    for (i = 0; i < l; i++)
      printf_unfiltered ("%c", a[i]);
      printf_unfiltered ("%c", a[i]);
 
 
  return;
  return;
}
}
 
 
void
void
sr_write_cr (s)
sr_write_cr (s)
     char *s;
     char *s;
{
{
  sr_write (s, strlen (s));
  sr_write (s, strlen (s));
  sr_write ("\r", 1);
  sr_write ("\r", 1);
  return;
  return;
}
}
 
 
int
int
sr_timed_read (buf, n)
sr_timed_read (buf, n)
     char *buf;
     char *buf;
     int n;
     int n;
{
{
  int i;
  int i;
  char c;
  char c;
 
 
  i = 0;
  i = 0;
  while (i < n)
  while (i < n)
    {
    {
      c = sr_readchar ();
      c = sr_readchar ();
 
 
      if (c == 0)
      if (c == 0)
        return i;
        return i;
      buf[i] = c;
      buf[i] = c;
      i++;
      i++;
 
 
    }
    }
  return i;
  return i;
}
}
 
 
/* Get a hex digit from the remote system & return its value. If
/* Get a hex digit from the remote system & return its value. If
   ignore_space is nonzero, ignore spaces (not newline, tab, etc).  */
   ignore_space is nonzero, ignore spaces (not newline, tab, etc).  */
 
 
int
int
sr_get_hex_digit (ignore_space)
sr_get_hex_digit (ignore_space)
     int ignore_space;
     int ignore_space;
{
{
  int ch;
  int ch;
 
 
  while (1)
  while (1)
    {
    {
      ch = sr_readchar ();
      ch = sr_readchar ();
      if (ch >= '0' && ch <= '9')
      if (ch >= '0' && ch <= '9')
        return ch - '0';
        return ch - '0';
      else if (ch >= 'A' && ch <= 'F')
      else if (ch >= 'A' && ch <= 'F')
        return ch - 'A' + 10;
        return ch - 'A' + 10;
      else if (ch >= 'a' && ch <= 'f')
      else if (ch >= 'a' && ch <= 'f')
        return ch - 'a' + 10;
        return ch - 'a' + 10;
      else if (ch != ' ' || !ignore_space)
      else if (ch != ' ' || !ignore_space)
        {
        {
          gr_expect_prompt ();
          gr_expect_prompt ();
          error ("Invalid hex digit from remote system.");
          error ("Invalid hex digit from remote system.");
        }
        }
    }
    }
}
}
 
 
/* Get a byte from the remote and put it in *BYT.  Accept any number
/* Get a byte from the remote and put it in *BYT.  Accept any number
   leading spaces.  */
   leading spaces.  */
void
void
sr_get_hex_byte (byt)
sr_get_hex_byte (byt)
     char *byt;
     char *byt;
{
{
  int val;
  int val;
 
 
  val = sr_get_hex_digit (1) << 4;
  val = sr_get_hex_digit (1) << 4;
  val |= sr_get_hex_digit (0);
  val |= sr_get_hex_digit (0);
  *byt = val;
  *byt = val;
}
}
 
 
/* Read a 32-bit hex word from the remote, preceded by a space  */
/* Read a 32-bit hex word from the remote, preceded by a space  */
long
long
sr_get_hex_word ()
sr_get_hex_word ()
{
{
  long val;
  long val;
  int j;
  int j;
 
 
  val = 0;
  val = 0;
  for (j = 0; j < 8; j++)
  for (j = 0; j < 8; j++)
    val = (val << 4) + sr_get_hex_digit (j == 0);
    val = (val << 4) + sr_get_hex_digit (j == 0);
  return val;
  return val;
}
}
 
 
/* Put a command string, in args, out to the remote.  The remote is assumed to
/* Put a command string, in args, out to the remote.  The remote is assumed to
   be in raw mode, all writing/reading done through desc.
   be in raw mode, all writing/reading done through desc.
   Ouput from the remote is placed on the users terminal until the
   Ouput from the remote is placed on the users terminal until the
   prompt from the remote is seen.
   prompt from the remote is seen.
   FIXME: Can't handle commands that take input.  */
   FIXME: Can't handle commands that take input.  */
 
 
static void
static void
sr_com (args, fromtty)
sr_com (args, fromtty)
     char *args;
     char *args;
     int fromtty;
     int fromtty;
{
{
  sr_check_open ();
  sr_check_open ();
 
 
  if (!args)
  if (!args)
    return;
    return;
 
 
  /* Clear all input so only command relative output is displayed */
  /* Clear all input so only command relative output is displayed */
 
 
  sr_write_cr (args);
  sr_write_cr (args);
  sr_write ("\030", 1);
  sr_write ("\030", 1);
  registers_changed ();
  registers_changed ();
  gr_expect_prompt ();
  gr_expect_prompt ();
}
}
 
 
void
void
gr_close (quitting)
gr_close (quitting)
     int quitting;
     int quitting;
{
{
  gr_clear_all_breakpoints ();
  gr_clear_all_breakpoints ();
 
 
  if (sr_is_open ())
  if (sr_is_open ())
    {
    {
      SERIAL_CLOSE (sr_get_desc ());
      SERIAL_CLOSE (sr_get_desc ());
      sr_set_desc (NULL);
      sr_set_desc (NULL);
    }
    }
 
 
  return;
  return;
}
}
 
 
/* gr_detach()
/* gr_detach()
   takes a program previously attached to and detaches it.
   takes a program previously attached to and detaches it.
   We better not have left any breakpoints
   We better not have left any breakpoints
   in the program or it'll die when it hits one.
   in the program or it'll die when it hits one.
   Close the open connection to the remote debugger.
   Close the open connection to the remote debugger.
   Use this when you want to detach and do something else
   Use this when you want to detach and do something else
   with your gdb.  */
   with your gdb.  */
 
 
void
void
gr_detach (args, from_tty)
gr_detach (args, from_tty)
     char *args;
     char *args;
     int from_tty;
     int from_tty;
{
{
  if (args)
  if (args)
    error ("Argument given to \"detach\" when remotely debugging.");
    error ("Argument given to \"detach\" when remotely debugging.");
 
 
  if (sr_is_open ())
  if (sr_is_open ())
    gr_clear_all_breakpoints ();
    gr_clear_all_breakpoints ();
 
 
  pop_target ();
  pop_target ();
  if (from_tty)
  if (from_tty)
    puts_filtered ("Ending remote debugging.\n");
    puts_filtered ("Ending remote debugging.\n");
 
 
  return;
  return;
}
}
 
 
void
void
gr_files_info (ops)
gr_files_info (ops)
     struct target_ops *ops;
     struct target_ops *ops;
{
{
#ifdef __GO32__
#ifdef __GO32__
  printf_filtered ("\tAttached to DOS asynctsr\n");
  printf_filtered ("\tAttached to DOS asynctsr\n");
#else
#else
  printf_filtered ("\tAttached to %s", sr_get_device ());
  printf_filtered ("\tAttached to %s", sr_get_device ());
  if (baud_rate != -1)
  if (baud_rate != -1)
    printf_filtered ("at %d baud", baud_rate);
    printf_filtered ("at %d baud", baud_rate);
  printf_filtered ("\n");
  printf_filtered ("\n");
#endif
#endif
 
 
  if (exec_bfd)
  if (exec_bfd)
    {
    {
      printf_filtered ("\tand running program %s\n",
      printf_filtered ("\tand running program %s\n",
                       bfd_get_filename (exec_bfd));
                       bfd_get_filename (exec_bfd));
    }
    }
  printf_filtered ("\tusing the %s protocol.\n", ops->to_shortname);
  printf_filtered ("\tusing the %s protocol.\n", ops->to_shortname);
}
}
 
 
void
void
gr_mourn ()
gr_mourn ()
{
{
  gr_clear_all_breakpoints ();
  gr_clear_all_breakpoints ();
  unpush_target (gr_get_ops ());
  unpush_target (gr_get_ops ());
  generic_mourn_inferior ();
  generic_mourn_inferior ();
}
}
 
 
void
void
gr_kill ()
gr_kill ()
{
{
  return;
  return;
}
}
 
 
/* This is called not only when we first attach, but also when the
/* This is called not only when we first attach, but also when the
   user types "run" after having attached.  */
   user types "run" after having attached.  */
void
void
gr_create_inferior (execfile, args, env)
gr_create_inferior (execfile, args, env)
     char *execfile;
     char *execfile;
     char *args;
     char *args;
     char **env;
     char **env;
{
{
  int entry_pt;
  int entry_pt;
 
 
  if (args && *args)
  if (args && *args)
    error ("Can't pass arguments to remote process.");
    error ("Can't pass arguments to remote process.");
 
 
  if (execfile == 0 || exec_bfd == 0)
  if (execfile == 0 || exec_bfd == 0)
    error ("No executable file specified");
    error ("No executable file specified");
 
 
  entry_pt = (int) bfd_get_start_address (exec_bfd);
  entry_pt = (int) bfd_get_start_address (exec_bfd);
  sr_check_open ();
  sr_check_open ();
 
 
  gr_kill ();
  gr_kill ();
  gr_clear_all_breakpoints ();
  gr_clear_all_breakpoints ();
 
 
  init_wait_for_inferior ();
  init_wait_for_inferior ();
  gr_checkin ();
  gr_checkin ();
 
 
  insert_breakpoints ();        /* Needed to get correct instruction in cache */
  insert_breakpoints ();        /* Needed to get correct instruction in cache */
  proceed (entry_pt, -1, 0);
  proceed (entry_pt, -1, 0);
}
}
 
 
/* Given a null terminated list of strings LIST, read the input until we find one of
/* Given a null terminated list of strings LIST, read the input until we find one of
   them.  Return the index of the string found or -1 on error.  '?' means match
   them.  Return the index of the string found or -1 on error.  '?' means match
   any single character. Note that with the algorithm we use, the initial
   any single character. Note that with the algorithm we use, the initial
   character of the string cannot recur in the string, or we will not find some
   character of the string cannot recur in the string, or we will not find some
   cases of the string in the input.  If PASSTHROUGH is non-zero, then
   cases of the string in the input.  If PASSTHROUGH is non-zero, then
   pass non-matching data on.  */
   pass non-matching data on.  */
 
 
int
int
gr_multi_scan (list, passthrough)
gr_multi_scan (list, passthrough)
     char *list[];
     char *list[];
     int passthrough;
     int passthrough;
{
{
  char *swallowed = NULL;       /* holding area */
  char *swallowed = NULL;       /* holding area */
  char *swallowed_p = swallowed;        /* Current position in swallowed.  */
  char *swallowed_p = swallowed;        /* Current position in swallowed.  */
  int ch;
  int ch;
  int ch_handled;
  int ch_handled;
  int i;
  int i;
  int string_count;
  int string_count;
  int max_length;
  int max_length;
  char **plist;
  char **plist;
 
 
  /* Look through the strings.  Count them.  Find the largest one so we can
  /* Look through the strings.  Count them.  Find the largest one so we can
     allocate a holding area.  */
     allocate a holding area.  */
 
 
  for (max_length = string_count = i = 0;
  for (max_length = string_count = i = 0;
       list[i] != NULL;
       list[i] != NULL;
       ++i, ++string_count)
       ++i, ++string_count)
    {
    {
      int length = strlen (list[i]);
      int length = strlen (list[i]);
 
 
      if (length > max_length)
      if (length > max_length)
        max_length = length;
        max_length = length;
    }
    }
 
 
  /* if we have no strings, then something is wrong. */
  /* if we have no strings, then something is wrong. */
  if (string_count == 0)
  if (string_count == 0)
    return (-1);
    return (-1);
 
 
  /* otherwise, we will need a holding area big enough to hold almost two
  /* otherwise, we will need a holding area big enough to hold almost two
     copies of our largest string.  */
     copies of our largest string.  */
  swallowed_p = swallowed = alloca (max_length << 1);
  swallowed_p = swallowed = alloca (max_length << 1);
 
 
  /* and a list of pointers to current scan points. */
  /* and a list of pointers to current scan points. */
  plist = (char **) alloca (string_count * sizeof (*plist));
  plist = (char **) alloca (string_count * sizeof (*plist));
 
 
  /* and initialize */
  /* and initialize */
  for (i = 0; i < string_count; ++i)
  for (i = 0; i < string_count; ++i)
    plist[i] = list[i];
    plist[i] = list[i];
 
 
  for (ch = sr_readchar (); /* loop forever */ ; ch = sr_readchar ())
  for (ch = sr_readchar (); /* loop forever */ ; ch = sr_readchar ())
    {
    {
      QUIT;                     /* Let user quit and leave process running */
      QUIT;                     /* Let user quit and leave process running */
      ch_handled = 0;
      ch_handled = 0;
 
 
      for (i = 0; i < string_count; ++i)
      for (i = 0; i < string_count; ++i)
        {
        {
          if (ch == *plist[i] || *plist[i] == '?')
          if (ch == *plist[i] || *plist[i] == '?')
            {
            {
              ++plist[i];
              ++plist[i];
              if (*plist[i] == '\0')
              if (*plist[i] == '\0')
                return (i);
                return (i);
 
 
              if (!ch_handled)
              if (!ch_handled)
                *swallowed_p++ = ch;
                *swallowed_p++ = ch;
 
 
              ch_handled = 1;
              ch_handled = 1;
            }
            }
          else
          else
            plist[i] = list[i];
            plist[i] = list[i];
        }
        }
 
 
      if (!ch_handled)
      if (!ch_handled)
        {
        {
          char *p;
          char *p;
 
 
          /* Print out any characters which have been swallowed.  */
          /* Print out any characters which have been swallowed.  */
          if (passthrough)
          if (passthrough)
            {
            {
              for (p = swallowed; p < swallowed_p; ++p)
              for (p = swallowed; p < swallowed_p; ++p)
                fputc_unfiltered (*p, gdb_stdout);
                fputc_unfiltered (*p, gdb_stdout);
 
 
              fputc_unfiltered (ch, gdb_stdout);
              fputc_unfiltered (ch, gdb_stdout);
            }
            }
 
 
          swallowed_p = swallowed;
          swallowed_p = swallowed;
        }
        }
    }
    }
#if 0
#if 0
  /* Never reached.  */
  /* Never reached.  */
  return (-1);
  return (-1);
#endif
#endif
}
}
 
 
/* Get ready to modify the registers array.  On machines which store
/* Get ready to modify the registers array.  On machines which store
   individual registers, this doesn't need to do anything.  On machines
   individual registers, this doesn't need to do anything.  On machines
   which store all the registers in one fell swoop, this makes sure
   which store all the registers in one fell swoop, this makes sure
   that registers contains all the registers from the program being
   that registers contains all the registers from the program being
   debugged.  */
   debugged.  */
 
 
void
void
gr_prepare_to_store ()
gr_prepare_to_store ()
{
{
  /* Do nothing, since we assume we can store individual regs */
  /* Do nothing, since we assume we can store individual regs */
}
}
 
 
/* Read a word from remote address ADDR and return it.
/* Read a word from remote address ADDR and return it.
 * This goes through the data cache.
 * This goes through the data cache.
 */
 */
int
int
gr_fetch_word (addr)
gr_fetch_word (addr)
     CORE_ADDR addr;
     CORE_ADDR addr;
{
{
  return dcache_fetch (gr_get_dcache (), addr);
  return dcache_fetch (gr_get_dcache (), addr);
}
}
 
 
/* Write a word WORD into remote address ADDR.
/* Write a word WORD into remote address ADDR.
   This goes through the data cache.  */
   This goes through the data cache.  */
 
 
void
void
gr_store_word (addr, word)
gr_store_word (addr, word)
     CORE_ADDR addr;
     CORE_ADDR addr;
     int word;
     int word;
{
{
  dcache_poke (gr_get_dcache (), addr, word);
  dcache_poke (gr_get_dcache (), addr, word);
}
}
 
 
void
void
_initialize_sr_support ()
_initialize_sr_support ()
{
{
/* FIXME-now: if target is open... */
/* FIXME-now: if target is open... */
  add_show_from_set (add_set_cmd ("remotedevice", no_class,
  add_show_from_set (add_set_cmd ("remotedevice", no_class,
                                  var_filename, (char *) &sr_settings.device,
                                  var_filename, (char *) &sr_settings.device,
                                  "Set device for remote serial I/O.\n\
                                  "Set device for remote serial I/O.\n\
This device is used as the serial port when debugging using remote\n\
This device is used as the serial port when debugging using remote\n\
targets.", &setlist),
targets.", &setlist),
                     &showlist);
                     &showlist);
 
 
  add_com ("remote <command>", class_obscure, sr_com,
  add_com ("remote <command>", class_obscure, sr_com,
           "Send a command to the remote monitor.");
           "Send a command to the remote monitor.");
 
 
}
}
 
 

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