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/* Generic serial interface routines
 
   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
   2002, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
   This file is part of GDB.
 
   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 3 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, see <http://www.gnu.org/licenses/>.  */
 
#include "defs.h"
#include <ctype.h>
#include "serial.h"
#include "gdb_string.h"
#include "gdbcmd.h"
 
extern void _initialize_serial (void);
 
/* Is serial being debugged? */
 
static int global_serial_debug_p;
 
/* Linked list of serial I/O handlers */
 
static struct serial_ops *serial_ops_list = NULL;
 
/* This is the last serial stream opened.  Used by connect command. */
 
static struct serial *last_serial_opened = NULL;
 
/* Pointer to list of scb's. */
 
static struct serial *scb_base;
 
/* Non-NULL gives filename which contains a recording of the remote session,
   suitable for playback by gdbserver. */
 
static char *serial_logfile = NULL;
static struct ui_file *serial_logfp = NULL;
 
static struct serial_ops *serial_interface_lookup (char *);
static void serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout);
static const char logbase_hex[] = "hex";
static const char logbase_octal[] = "octal";
static const char logbase_ascii[] = "ascii";
static const char *logbase_enums[] =
{logbase_hex, logbase_octal, logbase_ascii, NULL};
static const char *serial_logbase = logbase_ascii;
 
 
static int serial_current_type = 0;
 
/* Log char CH of type CHTYPE, with TIMEOUT */
 
/* Define bogus char to represent a BREAK.  Should be careful to choose a value
   that can't be confused with a normal char, or an error code.  */
#define SERIAL_BREAK 1235
 
static void
serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout)
{
  if (ch_type != serial_current_type)
    {
      fprintf_unfiltered (stream, "\n%c ", ch_type);
      serial_current_type = ch_type;
    }
 
  if (serial_logbase != logbase_ascii)
    fputc_unfiltered (' ', stream);
 
  switch (ch)
    {
    case SERIAL_TIMEOUT:
      fprintf_unfiltered (stream, "<Timeout: %d seconds>", timeout);
      return;
    case SERIAL_ERROR:
      fprintf_unfiltered (stream, "<Error: %s>", safe_strerror (errno));
      return;
    case SERIAL_EOF:
      fputs_unfiltered ("<Eof>", stream);
      return;
    case SERIAL_BREAK:
      fputs_unfiltered ("<Break>", stream);
      return;
    default:
      if (serial_logbase == logbase_hex)
        fprintf_unfiltered (stream, "%02x", ch & 0xff);
      else if (serial_logbase == logbase_octal)
        fprintf_unfiltered (stream, "%03o", ch & 0xff);
      else
        switch (ch)
          {
          case '\\':
            fputs_unfiltered ("\\\\", stream);
            break;
          case '\b':
            fputs_unfiltered ("\\b", stream);
            break;
          case '\f':
            fputs_unfiltered ("\\f", stream);
            break;
          case '\n':
            fputs_unfiltered ("\\n", stream);
            break;
          case '\r':
            fputs_unfiltered ("\\r", stream);
            break;
          case '\t':
            fputs_unfiltered ("\\t", stream);
            break;
          case '\v':
            fputs_unfiltered ("\\v", stream);
            break;
          default:
            fprintf_unfiltered (stream, isprint (ch) ? "%c" : "\\x%02x", ch & 0xFF);
            break;
          }
    }
}
 
void
serial_log_command (const char *cmd)
{
  if (!serial_logfp)
    return;
 
  serial_current_type = 'c';
 
  fputs_unfiltered ("\nc ", serial_logfp);
  fputs_unfiltered (cmd, serial_logfp);
 
  /* Make sure that the log file is as up-to-date as possible,
     in case we are getting ready to dump core or something. */
  gdb_flush (serial_logfp);
}
 
 
static struct serial_ops *
serial_interface_lookup (char *name)
{
  struct serial_ops *ops;
 
  for (ops = serial_ops_list; ops; ops = ops->next)
    if (strcmp (name, ops->name) == 0)
      return ops;
 
  return NULL;
}
 
void
serial_add_interface (struct serial_ops *optable)
{
  optable->next = serial_ops_list;
  serial_ops_list = optable;
}
 
/* Open up a device or a network socket, depending upon the syntax of NAME. */
 
struct serial *
serial_open (const char *name)
{
  struct serial *scb;
  struct serial_ops *ops;
  const char *open_name = name;
 
  for (scb = scb_base; scb; scb = scb->next)
    if (scb->name && strcmp (scb->name, name) == 0)
      {
        scb->refcnt++;
        return scb;
      }
 
  if (strcmp (name, "pc") == 0)
    ops = serial_interface_lookup ("pc");
  else if (strncmp (name, "lpt", 3) == 0)
    ops = serial_interface_lookup ("parallel");
  else if (strncmp (name, "|", 1) == 0)
    {
      ops = serial_interface_lookup ("pipe");
      /* Discard ``|'' and any space before the command itself.  */
      ++open_name;
      while (isspace (*open_name))
        ++open_name;
    }
  /* Check for a colon, suggesting an IP address/port pair.
     Do this *after* checking for all the interesting prefixes.  We
     don't want to constrain the syntax of what can follow them.  */
  else if (strchr (name, ':'))
    ops = serial_interface_lookup ("tcp");
  else
    ops = serial_interface_lookup ("hardwire");
 
  if (!ops)
    return NULL;
 
  scb = XMALLOC (struct serial);
 
  scb->ops = ops;
 
  scb->bufcnt = 0;
  scb->bufp = scb->buf;
  scb->error_fd = -1;
 
  /* `...->open (...)' would get expanded by an the open(2) syscall macro.  */
  if ((*scb->ops->open) (scb, open_name))
    {
      xfree (scb);
      return NULL;
    }
 
  scb->name = xstrdup (name);
  scb->next = scb_base;
  scb->refcnt = 1;
  scb->debug_p = 0;
  scb->async_state = 0;
  scb->async_handler = NULL;
  scb->async_context = NULL;
  scb_base = scb;
 
  last_serial_opened = scb;
 
  if (serial_logfile != NULL)
    {
      serial_logfp = gdb_fopen (serial_logfile, "w");
      if (serial_logfp == NULL)
        perror_with_name (serial_logfile);
    }
 
  return scb;
}
 
/* Return the open serial device for FD, if found, or NULL if FD
   is not already opened.  */
 
struct serial *
serial_for_fd (int fd)
{
  struct serial *scb;
  struct serial_ops *ops;
 
  for (scb = scb_base; scb; scb = scb->next)
    if (scb->fd == fd)
      return scb;
 
  return NULL;
}
 
struct serial *
serial_fdopen (const int fd)
{
  struct serial *scb;
  struct serial_ops *ops;
 
  for (scb = scb_base; scb; scb = scb->next)
    if (scb->fd == fd)
      {
        scb->refcnt++;
        return scb;
      }
 
  ops = serial_interface_lookup ("terminal");
  if (!ops)
    ops = serial_interface_lookup ("hardwire");
 
  if (!ops)
    return NULL;
 
  scb = XCALLOC (1, struct serial);
 
  scb->ops = ops;
 
  scb->bufcnt = 0;
  scb->bufp = scb->buf;
 
  scb->fd = fd;
 
  scb->name = NULL;
  scb->next = scb_base;
  scb->refcnt = 1;
  scb->debug_p = 0;
  scb->async_state = 0;
  scb->async_handler = NULL;
  scb->async_context = NULL;
  scb_base = scb;
 
  last_serial_opened = scb;
 
  return scb;
}
 
static void
do_serial_close (struct serial *scb, int really_close)
{
  struct serial *tmp_scb;
 
  last_serial_opened = NULL;
 
  if (serial_logfp)
    {
      fputs_unfiltered ("\nEnd of log\n", serial_logfp);
      serial_current_type = 0;
 
      /* XXX - What if serial_logfp == gdb_stdout or gdb_stderr? */
      ui_file_delete (serial_logfp);
      serial_logfp = NULL;
    }
 
/* This is bogus.  It's not our fault if you pass us a bad scb...!  Rob, you
   should fix your code instead.  */
 
  if (!scb)
    return;
 
  scb->refcnt--;
  if (scb->refcnt > 0)
    return;
 
  /* ensure that the FD has been taken out of async mode */
  if (scb->async_handler != NULL)
    serial_async (scb, NULL, NULL);
 
  if (really_close)
    scb->ops->close (scb);
 
  if (scb->name)
    xfree (scb->name);
 
  if (scb_base == scb)
    scb_base = scb_base->next;
  else
    for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)
      {
        if (tmp_scb->next != scb)
          continue;
 
        tmp_scb->next = tmp_scb->next->next;
        break;
      }
 
  xfree (scb);
}
 
void
serial_close (struct serial *scb)
{
  do_serial_close (scb, 1);
}
 
void
serial_un_fdopen (struct serial *scb)
{
  do_serial_close (scb, 0);
}
 
int
serial_readchar (struct serial *scb, int timeout)
{
  int ch;
 
  /* FIXME: cagney/1999-10-11: Don't enable this check until the ASYNC
     code is finished. */
  if (0 && serial_is_async_p (scb) && timeout < 0)
    internal_error (__FILE__, __LINE__,
                    _("serial_readchar: blocking read in async mode"));
 
  ch = scb->ops->readchar (scb, timeout);
  if (serial_logfp != NULL)
    {
      serial_logchar (serial_logfp, 'r', ch, timeout);
 
      /* Make sure that the log file is as up-to-date as possible,
         in case we are getting ready to dump core or something. */
      gdb_flush (serial_logfp);
    }
  if (serial_debug_p (scb))
    {
      fprintf_unfiltered (gdb_stdlog, "[");
      serial_logchar (gdb_stdlog, 'r', ch, timeout);
      fprintf_unfiltered (gdb_stdlog, "]");
      gdb_flush (gdb_stdlog);
    }
 
  return (ch);
}
 
int
serial_write (struct serial *scb, const char *str, int len)
{
  if (serial_logfp != NULL)
    {
      int count;
 
      for (count = 0; count < len; count++)
        serial_logchar (serial_logfp, 'w', str[count] & 0xff, 0);
 
      /* Make sure that the log file is as up-to-date as possible,
         in case we are getting ready to dump core or something. */
      gdb_flush (serial_logfp);
    }
 
  return (scb->ops->write (scb, str, len));
}
 
void
serial_printf (struct serial *desc, const char *format,...)
{
  va_list args;
  char *buf;
  va_start (args, format);
 
  buf = xstrvprintf (format, args);
  serial_write (desc, buf, strlen (buf));
 
  xfree (buf);
  va_end (args);
}
 
int
serial_drain_output (struct serial *scb)
{
  return scb->ops->drain_output (scb);
}
 
int
serial_flush_output (struct serial *scb)
{
  return scb->ops->flush_output (scb);
}
 
int
serial_flush_input (struct serial *scb)
{
  return scb->ops->flush_input (scb);
}
 
int
serial_send_break (struct serial *scb)
{
  if (serial_logfp != NULL)
    serial_logchar (serial_logfp, 'w', SERIAL_BREAK, 0);
 
  return (scb->ops->send_break (scb));
}
 
void
serial_raw (struct serial *scb)
{
  scb->ops->go_raw (scb);
}
 
serial_ttystate
serial_get_tty_state (struct serial *scb)
{
  return scb->ops->get_tty_state (scb);
}
 
int
serial_set_tty_state (struct serial *scb, serial_ttystate ttystate)
{
  return scb->ops->set_tty_state (scb, ttystate);
}
 
void
serial_print_tty_state (struct serial *scb,
                        serial_ttystate ttystate,
                        struct ui_file *stream)
{
  scb->ops->print_tty_state (scb, ttystate, stream);
}
 
int
serial_noflush_set_tty_state (struct serial *scb,
                              serial_ttystate new_ttystate,
                              serial_ttystate old_ttystate)
{
  return scb->ops->noflush_set_tty_state (scb, new_ttystate, old_ttystate);
}
 
int
serial_setbaudrate (struct serial *scb, int rate)
{
  return scb->ops->setbaudrate (scb, rate);
}
 
int
serial_setstopbits (struct serial *scb, int num)
{
  return scb->ops->setstopbits (scb, num);
}
 
int
serial_can_async_p (struct serial *scb)
{
  return (scb->ops->async != NULL);
}
 
int
serial_is_async_p (struct serial *scb)
{
  return (scb->ops->async != NULL) && (scb->async_handler != NULL);
}
 
void
serial_async (struct serial *scb,
              serial_event_ftype *handler,
              void *context)
{
  int changed = ((scb->async_handler == NULL) != (handler == NULL));
  scb->async_handler = handler;
  scb->async_context = context;
  /* Only change mode if there is a need.  */
  if (changed)
    scb->ops->async (scb, handler != NULL);
}
 
int
deprecated_serial_fd (struct serial *scb)
{
  /* FIXME: should this output a warning that deprecated code is being
     called? */
  if (scb->fd < 0)
    {
      internal_error (__FILE__, __LINE__,
                      _("serial: FD not valid"));
    }
  return scb->fd; /* sigh */
}
 
void
serial_debug (struct serial *scb, int debug_p)
{
  scb->debug_p = debug_p;
}
 
int
serial_debug_p (struct serial *scb)
{
  return scb->debug_p || global_serial_debug_p;
}
 
#ifdef USE_WIN32API
void
serial_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except)
{
  if (scb->ops->wait_handle)
    scb->ops->wait_handle (scb, read, except);
  else
    {
      *read = (HANDLE) _get_osfhandle (scb->fd);
      *except = NULL;
    }
}
 
void
serial_done_wait_handle (struct serial *scb)
{
  if (scb->ops->done_wait_handle)
    scb->ops->done_wait_handle (scb);
}
#endif
 
#if 0
/* The connect command is #if 0 because I hadn't thought of an elegant
   way to wait for I/O on two `struct serial *'s simultaneously.  Two
   solutions came to mind:
 
   1) Fork, and have have one fork handle the to user direction,
   and have the other hand the to target direction.  This
   obviously won't cut it for MSDOS.
 
   2) Use something like select.  This assumes that stdin and
   the target side can both be waited on via the same
   mechanism.  This may not be true for DOS, if GDB is
   talking to the target via a TCP socket.
   -grossman, 8 Jun 93 */
 
/* Connect the user directly to the remote system.  This command acts just like
   the 'cu' or 'tip' command.  Use <CR>~. or <CR>~^D to break out.  */
 
static struct serial *tty_desc; /* Controlling terminal */
 
static void
cleanup_tty (serial_ttystate ttystate)
{
  printf_unfiltered ("\r\n[Exiting connect mode]\r\n");
  serial_set_tty_state (tty_desc, ttystate);
  xfree (ttystate);
  serial_close (tty_desc);
}
 
static void
connect_command (char *args, int fromtty)
{
  int c;
  char cur_esc = 0;
  serial_ttystate ttystate;
  struct serial *port_desc;             /* TTY port */
 
  dont_repeat ();
 
  if (args)
    fprintf_unfiltered (gdb_stderr, "This command takes no args.  They have been ignored.\n");
 
  printf_unfiltered ("[Entering connect mode.  Use ~. or ~^D to escape]\n");
 
  tty_desc = serial_fdopen (0);
  port_desc = last_serial_opened;
 
  ttystate = serial_get_tty_state (tty_desc);
 
  serial_raw (tty_desc);
  serial_raw (port_desc);
 
  make_cleanup (cleanup_tty, ttystate);
 
  while (1)
    {
      int mask;
 
      mask = serial_wait_2 (tty_desc, port_desc, -1);
 
      if (mask & 2)
        {                       /* tty input */
          char cx;
 
          while (1)
            {
              c = serial_readchar (tty_desc, 0);
 
              if (c == SERIAL_TIMEOUT)
                break;
 
              if (c < 0)
                perror_with_name (_("connect"));
 
              cx = c;
              serial_write (port_desc, &cx, 1);
 
              switch (cur_esc)
                {
                case 0:
                  if (c == '\r')
                    cur_esc = c;
                  break;
                case '\r':
                  if (c == '~')
                    cur_esc = c;
                  else
                    cur_esc = 0;
                  break;
                case '~':
                  if (c == '.' || c == '\004')
                    return;
                  else
                    cur_esc = 0;
                }
            }
        }
 
      if (mask & 1)
        {                       /* Port input */
          char cx;
 
          while (1)
            {
              c = serial_readchar (port_desc, 0);
 
              if (c == SERIAL_TIMEOUT)
                break;
 
              if (c < 0)
                perror_with_name (_("connect"));
 
              cx = c;
 
              serial_write (tty_desc, &cx, 1);
            }
        }
    }
}
#endif /* 0 */
 
/* Serial set/show framework.  */
 
static struct cmd_list_element *serial_set_cmdlist;
static struct cmd_list_element *serial_show_cmdlist;
 
static void
serial_set_cmd (char *args, int from_tty)
{
  printf_unfiltered ("\"set serial\" must be followed by the name of a command.\n");
  help_list (serial_set_cmdlist, "set serial ", -1, gdb_stdout);
}
 
static void
serial_show_cmd (char *args, int from_tty)
{
  cmd_show_list (serial_show_cmdlist, from_tty, "");
}
 
 
void
_initialize_serial (void)
{
#if 0
  add_com ("connect", class_obscure, connect_command, _("\
Connect the terminal directly up to the command monitor.\n\
Use <CR>~. or <CR>~^D to break out."));
#endif /* 0 */
 
  add_prefix_cmd ("serial", class_maintenance, serial_set_cmd, _("\
Set default serial/parallel port configuration."),
                  &serial_set_cmdlist, "set serial ",
                  0/*allow-unknown*/,
                  &setlist);
 
  add_prefix_cmd ("serial", class_maintenance, serial_show_cmd, _("\
Show default serial/parallel port configuration."),
                  &serial_show_cmdlist, "show serial ",
                  0/*allow-unknown*/,
                  &showlist);
 
  add_setshow_filename_cmd ("remotelogfile", no_class, &serial_logfile, _("\
Set filename for remote session recording."), _("\
Show filename for remote session recording."), _("\
This file is used to record the remote session for future playback\n\
by gdbserver."),
                            NULL,
                            NULL, /* FIXME: i18n: */
                            &setlist, &showlist);
 
  add_setshow_enum_cmd ("remotelogbase", no_class, logbase_enums,
                        &serial_logbase, _("\
Set numerical base for remote session logging"), _("\
Show numerical base for remote session logging"), NULL,
                        NULL,
                        NULL, /* FIXME: i18n: */
                        &setlist, &showlist);
 
  add_setshow_zinteger_cmd ("serial", class_maintenance,
                            &global_serial_debug_p, _("\
Set serial debugging."), _("\
Show serial debugging."), _("\
When non-zero, serial port debugging is enabled."),
                            NULL,
                            NULL, /* FIXME: i18n: */
                            &setdebuglist, &showdebuglist);
}

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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [serial.c] - Blame information for rev 233

Line No.	Rev	Author	Line
1	24	jeremybenn	`/* Generic serial interface routines`
2
3			`Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,`
4			`2002, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.`
5
6			`This file is part of GDB.`
7
8			`This program is free software; you can redistribute it and/or modify`
9			`it under the terms of the GNU General Public License as published by`
10			`the Free Software Foundation; either version 3 of the License, or`
11			`(at your option) any later version.`
12
13			`This program is distributed in the hope that it will be useful,`
14			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`GNU General Public License for more details.`
17
18			`You should have received a copy of the GNU General Public License`
19			`along with this program. If not, see <http://www.gnu.org/licenses/>. */`
20
21			`#include "defs.h"`
22			`#include <ctype.h>`
23			`#include "serial.h"`
24			`#include "gdb_string.h"`
25			`#include "gdbcmd.h"`
26
27			`extern void _initialize_serial (void);`
28
29			`/* Is serial being debugged? */`
30
31			`static int global_serial_debug_p;`
32
33			`/* Linked list of serial I/O handlers */`
34
35			`static struct serial_ops *serial_ops_list = NULL;`
36
37			`/* This is the last serial stream opened. Used by connect command. */`
38
39			`static struct serial *last_serial_opened = NULL;`
40
41			`/* Pointer to list of scb's. */`
42
43			`static struct serial *scb_base;`
44
45			`/* Non-NULL gives filename which contains a recording of the remote session,`
46			`suitable for playback by gdbserver. */`
47
48			`static char *serial_logfile = NULL;`
49			`static struct ui_file *serial_logfp = NULL;`
50
51			`static struct serial_ops serial_interface_lookup (char );`
52			`static void serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout);`
53			`static const char logbase_hex[] = "hex";`
54			`static const char logbase_octal[] = "octal";`
55			`static const char logbase_ascii[] = "ascii";`
56			`static const char *logbase_enums[] =`
57			`{logbase_hex, logbase_octal, logbase_ascii, NULL};`
58			`static const char *serial_logbase = logbase_ascii;`
59
60
61			`static int serial_current_type = 0;`
62
63			`/* Log char CH of type CHTYPE, with TIMEOUT */`
64
65			`/* Define bogus char to represent a BREAK. Should be careful to choose a value`
66			`that can't be confused with a normal char, or an error code. */`
67			`#define SERIAL_BREAK 1235`
68
69			`static void`
70			`serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout)`
71			`{`
72			`if (ch_type != serial_current_type)`
73			`{`
74			`fprintf_unfiltered (stream, "\n%c ", ch_type);`
75			`serial_current_type = ch_type;`
76			`}`
77
78			`if (serial_logbase != logbase_ascii)`
79			`fputc_unfiltered (' ', stream);`
80
81			`switch (ch)`
82			`{`
83			`case SERIAL_TIMEOUT:`
84			`fprintf_unfiltered (stream, "<Timeout: %d seconds>", timeout);`
85			`return;`
86			`case SERIAL_ERROR:`
87			`fprintf_unfiltered (stream, "<Error: %s>", safe_strerror (errno));`
88			`return;`
89			`case SERIAL_EOF:`
90			`fputs_unfiltered ("<Eof>", stream);`
91			`return;`
92			`case SERIAL_BREAK:`
93			`fputs_unfiltered ("<Break>", stream);`
94			`return;`
95			`default:`
96			`if (serial_logbase == logbase_hex)`
97			`fprintf_unfiltered (stream, "%02x", ch & 0xff);`
98			`else if (serial_logbase == logbase_octal)`
99			`fprintf_unfiltered (stream, "%03o", ch & 0xff);`
100			`else`
101			`switch (ch)`
102			`{`
103			`case '\\':`
104			`fputs_unfiltered ("\\\\", stream);`
105			`break;`
106			`case '\b':`
107			`fputs_unfiltered ("\\b", stream);`
108			`break;`
109			`case '\f':`
110			`fputs_unfiltered ("\\f", stream);`
111			`break;`
112			`case '\n':`
113			`fputs_unfiltered ("\\n", stream);`
114			`break;`
115			`case '\r':`
116			`fputs_unfiltered ("\\r", stream);`
117			`break;`
118			`case '\t':`
119			`fputs_unfiltered ("\\t", stream);`
120			`break;`
121			`case '\v':`
122			`fputs_unfiltered ("\\v", stream);`
123			`break;`
124			`default:`
125			`fprintf_unfiltered (stream, isprint (ch) ? "%c" : "\\x%02x", ch & 0xFF);`
126			`break;`
127			`}`
128			`}`
129			`}`
130
131			`void`
132			`serial_log_command (const char *cmd)`
133			`{`
134			`if (!serial_logfp)`
135			`return;`
136
137			`serial_current_type = 'c';`
138
139			`fputs_unfiltered ("\nc ", serial_logfp);`
140			`fputs_unfiltered (cmd, serial_logfp);`
141
142			`/* Make sure that the log file is as up-to-date as possible,`
143			`in case we are getting ready to dump core or something. */`
144			`gdb_flush (serial_logfp);`
145			`}`
146
147
148			`static struct serial_ops *`
149			`serial_interface_lookup (char *name)`
150			`{`
151			`struct serial_ops *ops;`
152
153			`for (ops = serial_ops_list; ops; ops = ops->next)`
154			`if (strcmp (name, ops->name) == 0)`
155			`return ops;`
156
157			`return NULL;`
158			`}`
159
160			`void`
161			`serial_add_interface (struct serial_ops *optable)`
162			`{`
163			`optable->next = serial_ops_list;`
164			`serial_ops_list = optable;`
165			`}`
166
167			`/* Open up a device or a network socket, depending upon the syntax of NAME. */`
168
169			`struct serial *`
170			`serial_open (const char *name)`
171			`{`
172			`struct serial *scb;`
173			`struct serial_ops *ops;`
174			`const char *open_name = name;`
175
176			`for (scb = scb_base; scb; scb = scb->next)`
177			`if (scb->name && strcmp (scb->name, name) == 0)`
178			`{`
179			`scb->refcnt++;`
180			`return scb;`
181			`}`
182
183			`if (strcmp (name, "pc") == 0)`
184			`ops = serial_interface_lookup ("pc");`
185			`else if (strncmp (name, "lpt", 3) == 0)`
186			`ops = serial_interface_lookup ("parallel");`
187			`else if (strncmp (name, "\|", 1) == 0)`
188			`{`
189			`ops = serial_interface_lookup ("pipe");`
190			/* Discard ``\|'' and any space before the command itself. */
191			`++open_name;`
192			`while (isspace (*open_name))`
193			`++open_name;`
194			`}`
195			`/* Check for a colon, suggesting an IP address/port pair.`
196			`Do this after checking for all the interesting prefixes. We`
197			`don't want to constrain the syntax of what can follow them. */`
198			`else if (strchr (name, ':'))`
199			`ops = serial_interface_lookup ("tcp");`
200			`else`
201			`ops = serial_interface_lookup ("hardwire");`
202
203			`if (!ops)`
204			`return NULL;`
205
206			`scb = XMALLOC (struct serial);`
207
208			`scb->ops = ops;`
209
210			`scb->bufcnt = 0;`
211			`scb->bufp = scb->buf;`
212			`scb->error_fd = -1;`
213
214			/* `...->open (...)' would get expanded by an the open(2) syscall macro. */
215			`if ((*scb->ops->open) (scb, open_name))`
216			`{`
217			`xfree (scb);`
218			`return NULL;`
219			`}`
220
221			`scb->name = xstrdup (name);`
222			`scb->next = scb_base;`
223			`scb->refcnt = 1;`
224			`scb->debug_p = 0;`
225			`scb->async_state = 0;`
226			`scb->async_handler = NULL;`
227			`scb->async_context = NULL;`
228			`scb_base = scb;`
229
230			`last_serial_opened = scb;`
231
232			`if (serial_logfile != NULL)`
233			`{`
234			`serial_logfp = gdb_fopen (serial_logfile, "w");`
235			`if (serial_logfp == NULL)`
236			`perror_with_name (serial_logfile);`
237			`}`
238
239			`return scb;`
240			`}`
241
242			`/* Return the open serial device for FD, if found, or NULL if FD`
243			`is not already opened. */`
244
245			`struct serial *`
246			`serial_for_fd (int fd)`
247			`{`
248			`struct serial *scb;`
249			`struct serial_ops *ops;`
250
251			`for (scb = scb_base; scb; scb = scb->next)`
252			`if (scb->fd == fd)`
253			`return scb;`
254
255			`return NULL;`
256			`}`
257
258			`struct serial *`
259			`serial_fdopen (const int fd)`
260			`{`
261			`struct serial *scb;`
262			`struct serial_ops *ops;`
263
264			`for (scb = scb_base; scb; scb = scb->next)`
265			`if (scb->fd == fd)`
266			`{`
267			`scb->refcnt++;`
268			`return scb;`
269			`}`
270
271			`ops = serial_interface_lookup ("terminal");`
272			`if (!ops)`
273			`ops = serial_interface_lookup ("hardwire");`
274
275			`if (!ops)`
276			`return NULL;`
277
278			`scb = XCALLOC (1, struct serial);`
279
280			`scb->ops = ops;`
281
282			`scb->bufcnt = 0;`
283			`scb->bufp = scb->buf;`
284
285			`scb->fd = fd;`
286
287			`scb->name = NULL;`
288			`scb->next = scb_base;`
289			`scb->refcnt = 1;`
290			`scb->debug_p = 0;`
291			`scb->async_state = 0;`
292			`scb->async_handler = NULL;`
293			`scb->async_context = NULL;`
294			`scb_base = scb;`
295
296			`last_serial_opened = scb;`
297
298			`return scb;`
299			`}`
300
301			`static void`
302			`do_serial_close (struct serial *scb, int really_close)`
303			`{`
304			`struct serial *tmp_scb;`
305
306			`last_serial_opened = NULL;`
307
308			`if (serial_logfp)`
309			`{`
310			`fputs_unfiltered ("\nEnd of log\n", serial_logfp);`
311			`serial_current_type = 0;`
312
313			`/* XXX - What if serial_logfp == gdb_stdout or gdb_stderr? */`
314			`ui_file_delete (serial_logfp);`
315			`serial_logfp = NULL;`
316			`}`
317
318			`/* This is bogus. It's not our fault if you pass us a bad scb...! Rob, you`
319			`should fix your code instead. */`
320
321			`if (!scb)`
322			`return;`
323
324			`scb->refcnt--;`
325			`if (scb->refcnt > 0)`
326			`return;`
327
328			`/* ensure that the FD has been taken out of async mode */`
329			`if (scb->async_handler != NULL)`
330			`serial_async (scb, NULL, NULL);`
331
332			`if (really_close)`
333			`scb->ops->close (scb);`
334
335			`if (scb->name)`
336			`xfree (scb->name);`
337
338			`if (scb_base == scb)`
339			`scb_base = scb_base->next;`
340			`else`
341			`for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)`
342			`{`
343			`if (tmp_scb->next != scb)`
344			`continue;`
345
346			`tmp_scb->next = tmp_scb->next->next;`
347			`break;`
348			`}`
349
350			`xfree (scb);`
351			`}`
352
353			`void`
354			`serial_close (struct serial *scb)`
355			`{`
356			`do_serial_close (scb, 1);`
357			`}`
358
359			`void`
360			`serial_un_fdopen (struct serial *scb)`
361			`{`
362			`do_serial_close (scb, 0);`
363			`}`
364
365			`int`
366			`serial_readchar (struct serial *scb, int timeout)`
367			`{`
368			`int ch;`
369
370			`/* FIXME: cagney/1999-10-11: Don't enable this check until the ASYNC`
371			`code is finished. */`
372			`if (0 && serial_is_async_p (scb) && timeout < 0)`
373			`internal_error (__FILE__, __LINE__,`
374			`_("serial_readchar: blocking read in async mode"));`
375
376			`ch = scb->ops->readchar (scb, timeout);`
377			`if (serial_logfp != NULL)`
378			`{`
379			`serial_logchar (serial_logfp, 'r', ch, timeout);`
380
381			`/* Make sure that the log file is as up-to-date as possible,`
382			`in case we are getting ready to dump core or something. */`
383			`gdb_flush (serial_logfp);`
384			`}`
385			`if (serial_debug_p (scb))`
386			`{`
387			`fprintf_unfiltered (gdb_stdlog, "[");`
388			`serial_logchar (gdb_stdlog, 'r', ch, timeout);`
389			`fprintf_unfiltered (gdb_stdlog, "]");`
390			`gdb_flush (gdb_stdlog);`
391			`}`
392
393			`return (ch);`
394			`}`
395
396			`int`
397			`serial_write (struct serial scb, const char str, int len)`
398			`{`
399			`if (serial_logfp != NULL)`
400			`{`
401			`int count;`
402
403			`for (count = 0; count < len; count++)`
404			`serial_logchar (serial_logfp, 'w', str[count] & 0xff, 0);`
405
406			`/* Make sure that the log file is as up-to-date as possible,`
407			`in case we are getting ready to dump core or something. */`
408			`gdb_flush (serial_logfp);`
409			`}`
410
411			`return (scb->ops->write (scb, str, len));`
412			`}`
413
414			`void`
415			`serial_printf (struct serial desc, const char format,...)`
416			`{`
417			`va_list args;`
418			`char *buf;`
419			`va_start (args, format);`
420
421			`buf = xstrvprintf (format, args);`
422			`serial_write (desc, buf, strlen (buf));`
423
424			`xfree (buf);`
425			`va_end (args);`
426			`}`
427
428			`int`
429			`serial_drain_output (struct serial *scb)`
430			`{`
431			`return scb->ops->drain_output (scb);`
432			`}`
433
434			`int`
435			`serial_flush_output (struct serial *scb)`
436			`{`
437			`return scb->ops->flush_output (scb);`
438			`}`
439
440			`int`
441			`serial_flush_input (struct serial *scb)`
442			`{`
443			`return scb->ops->flush_input (scb);`
444			`}`
445
446			`int`
447			`serial_send_break (struct serial *scb)`
448			`{`
449			`if (serial_logfp != NULL)`
450			`serial_logchar (serial_logfp, 'w', SERIAL_BREAK, 0);`
451
452			`return (scb->ops->send_break (scb));`
453			`}`
454
455			`void`
456			`serial_raw (struct serial *scb)`
457			`{`
458			`scb->ops->go_raw (scb);`
459			`}`
460
461			`serial_ttystate`
462			`serial_get_tty_state (struct serial *scb)`
463			`{`
464			`return scb->ops->get_tty_state (scb);`
465			`}`
466
467			`int`
468			`serial_set_tty_state (struct serial *scb, serial_ttystate ttystate)`
469			`{`
470			`return scb->ops->set_tty_state (scb, ttystate);`
471			`}`
472
473			`void`
474			`serial_print_tty_state (struct serial *scb,`
475			`serial_ttystate ttystate,`
476			`struct ui_file *stream)`
477			`{`
478			`scb->ops->print_tty_state (scb, ttystate, stream);`
479			`}`
480
481			`int`
482			`serial_noflush_set_tty_state (struct serial *scb,`
483			`serial_ttystate new_ttystate,`
484			`serial_ttystate old_ttystate)`
485			`{`
486			`return scb->ops->noflush_set_tty_state (scb, new_ttystate, old_ttystate);`
487			`}`
488
489			`int`
490			`serial_setbaudrate (struct serial *scb, int rate)`
491			`{`
492			`return scb->ops->setbaudrate (scb, rate);`
493			`}`
494
495			`int`
496			`serial_setstopbits (struct serial *scb, int num)`
497			`{`
498			`return scb->ops->setstopbits (scb, num);`
499			`}`
500
501			`int`
502			`serial_can_async_p (struct serial *scb)`
503			`{`
504			`return (scb->ops->async != NULL);`
505			`}`
506
507			`int`
508			`serial_is_async_p (struct serial *scb)`
509			`{`
510			`return (scb->ops->async != NULL) && (scb->async_handler != NULL);`
511			`}`
512
513			`void`
514			`serial_async (struct serial *scb,`
515			`serial_event_ftype *handler,`
516			`void *context)`
517			`{`
518			`int changed = ((scb->async_handler == NULL) != (handler == NULL));`
519			`scb->async_handler = handler;`
520			`scb->async_context = context;`
521			`/* Only change mode if there is a need. */`
522			`if (changed)`
523			`scb->ops->async (scb, handler != NULL);`
524			`}`
525
526			`int`
527			`deprecated_serial_fd (struct serial *scb)`
528			`{`
529			`/* FIXME: should this output a warning that deprecated code is being`
530			`called? */`
531			`if (scb->fd < 0)`
532			`{`
533			`internal_error (__FILE__, __LINE__,`
534			`_("serial: FD not valid"));`
535			`}`
536			`return scb->fd; /* sigh */`
537			`}`
538
539			`void`
540			`serial_debug (struct serial *scb, int debug_p)`
541			`{`
542			`scb->debug_p = debug_p;`
543			`}`
544
545			`int`
546			`serial_debug_p (struct serial *scb)`
547			`{`
548			`return scb->debug_p \|\| global_serial_debug_p;`
549			`}`
550
551			`#ifdef USE_WIN32API`
552			`void`
553			`serial_wait_handle (struct serial scb, HANDLE read, HANDLE *except)`
554			`{`
555			`if (scb->ops->wait_handle)`
556			`scb->ops->wait_handle (scb, read, except);`
557			`else`
558			`{`
559			`*read = (HANDLE) _get_osfhandle (scb->fd);`
560			`*except = NULL;`
561			`}`
562			`}`
563
564			`void`
565			`serial_done_wait_handle (struct serial *scb)`
566			`{`
567			`if (scb->ops->done_wait_handle)`
568			`scb->ops->done_wait_handle (scb);`
569			`}`
570			`#endif`
571
572			`#if 0`
573			`/* The connect command is #if 0 because I hadn't thought of an elegant`
574			way to wait for I/O on two `struct serial *'s simultaneously. Two
575			`solutions came to mind:`
576
577			`1) Fork, and have have one fork handle the to user direction,`
578			`and have the other hand the to target direction. This`
579			`obviously won't cut it for MSDOS.`
580
581			`2) Use something like select. This assumes that stdin and`
582			`the target side can both be waited on via the same`
583			`mechanism. This may not be true for DOS, if GDB is`
584			`talking to the target via a TCP socket.`
585			`-grossman, 8 Jun 93 */`
586
587			`/* Connect the user directly to the remote system. This command acts just like`
588			`the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */`
589
590			`static struct serial tty_desc; / Controlling terminal */`
591
592			`static void`
593			`cleanup_tty (serial_ttystate ttystate)`
594			`{`
595			`printf_unfiltered ("\r\n[Exiting connect mode]\r\n");`
596			`serial_set_tty_state (tty_desc, ttystate);`
597			`xfree (ttystate);`
598			`serial_close (tty_desc);`
599			`}`
600
601			`static void`
602			`connect_command (char *args, int fromtty)`
603			`{`
604			`int c;`
605			`char cur_esc = 0;`
606			`serial_ttystate ttystate;`
607			`struct serial port_desc; / TTY port */`
608
609			`dont_repeat ();`
610
611			`if (args)`
612			`fprintf_unfiltered (gdb_stderr, "This command takes no args. They have been ignored.\n");`
613
614			`printf_unfiltered ("[Entering connect mode. Use ~. or ~^D to escape]\n");`
615
616			`tty_desc = serial_fdopen (0);`
617			`port_desc = last_serial_opened;`
618
619			`ttystate = serial_get_tty_state (tty_desc);`
620
621			`serial_raw (tty_desc);`
622			`serial_raw (port_desc);`
623
624			`make_cleanup (cleanup_tty, ttystate);`
625
626			`while (1)`
627			`{`
628			`int mask;`
629
630			`mask = serial_wait_2 (tty_desc, port_desc, -1);`
631
632			`if (mask & 2)`
633			`{ /* tty input */`
634			`char cx;`
635
636			`while (1)`
637			`{`
638			`c = serial_readchar (tty_desc, 0);`
639
640			`if (c == SERIAL_TIMEOUT)`
641			`break;`
642
643			`if (c < 0)`
644			`perror_with_name (_("connect"));`
645
646			`cx = c;`
647			`serial_write (port_desc, &cx, 1);`
648
649			`switch (cur_esc)`
650			`{`
651			`case 0:`
652			`if (c == '\r')`
653			`cur_esc = c;`
654			`break;`
655			`case '\r':`
656			`if (c == '~')`
657			`cur_esc = c;`
658			`else`
659			`cur_esc = 0;`
660			`break;`
661			`case '~':`
662			`if (c == '.' \|\| c == '\004')`
663			`return;`
664			`else`
665			`cur_esc = 0;`
666			`}`
667			`}`
668			`}`
669
670			`if (mask & 1)`
671			`{ /* Port input */`
672			`char cx;`
673
674			`while (1)`
675			`{`
676			`c = serial_readchar (port_desc, 0);`
677
678			`if (c == SERIAL_TIMEOUT)`
679			`break;`
680
681			`if (c < 0)`
682			`perror_with_name (_("connect"));`
683
684			`cx = c;`
685
686			`serial_write (tty_desc, &cx, 1);`
687			`}`
688			`}`
689			`}`
690			`}`
691			`#endif /* 0 */`
692
693			`/* Serial set/show framework. */`
694
695			`static struct cmd_list_element *serial_set_cmdlist;`
696			`static struct cmd_list_element *serial_show_cmdlist;`
697
698			`static void`
699			`serial_set_cmd (char *args, int from_tty)`
700			`{`
701			`printf_unfiltered ("\"set serial\" must be followed by the name of a command.\n");`
702			`help_list (serial_set_cmdlist, "set serial ", -1, gdb_stdout);`
703			`}`
704
705			`static void`
706			`serial_show_cmd (char *args, int from_tty)`
707			`{`
708			`cmd_show_list (serial_show_cmdlist, from_tty, "");`
709			`}`
710
711
712			`void`
713			`_initialize_serial (void)`
714			`{`
715			`#if 0`
716			`add_com ("connect", class_obscure, connect_command, _("\`
717			`Connect the terminal directly up to the command monitor.\n\`
718			`Use <CR>~. or <CR>~^D to break out."));`
719			`#endif /* 0 */`
720
721			`add_prefix_cmd ("serial", class_maintenance, serial_set_cmd, _("\`
722			`Set default serial/parallel port configuration."),`
723			`&serial_set_cmdlist, "set serial ",`
724			`0/allow-unknown/,`
725			`&setlist);`
726
727			`add_prefix_cmd ("serial", class_maintenance, serial_show_cmd, _("\`
728			`Show default serial/parallel port configuration."),`
729			`&serial_show_cmdlist, "show serial ",`
730			`0/allow-unknown/,`
731			`&showlist);`
732
733			`add_setshow_filename_cmd ("remotelogfile", no_class, &serial_logfile, _("\`
734			`Set filename for remote session recording."), _("\`
735			`Show filename for remote session recording."), _("\`
736			`This file is used to record the remote session for future playback\n\`
737			`by gdbserver."),`
738			`NULL,`
739			`NULL, /* FIXME: i18n: */`
740			`&setlist, &showlist);`
741
742			`add_setshow_enum_cmd ("remotelogbase", no_class, logbase_enums,`
743			`&serial_logbase, _("\`
744			`Set numerical base for remote session logging"), _("\`
745			`Show numerical base for remote session logging"), NULL,`
746			`NULL,`
747			`NULL, /* FIXME: i18n: */`
748			`&setlist, &showlist);`
749
750			`add_setshow_zinteger_cmd ("serial", class_maintenance,`
751			`&global_serial_debug_p, _("\`
752			`Set serial debugging."), _("\`
753			`Show serial debugging."), _("\`
754			`When non-zero, serial port debugging is enabled."),`
755			`NULL,`
756			`NULL, /* FIXME: i18n: */`
757			`&setdebuglist, &showdebuglist);`
758			`}`