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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, 2009, 2010
   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-7.1/] [gdb/] [serial.c] - Blame information for rev 309

Line No.	Rev	Author	Line
1	227	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, 2009, 2010`
5			`Free Software Foundation, Inc.`
6
7			`This file is part of GDB.`
8
9			`This program is free software; you can redistribute it and/or modify`
10			`it under the terms of the GNU General Public License as published by`
11			`the Free Software Foundation; either version 3 of the License, or`
12			`(at your option) any later version.`
13
14			`This program is distributed in the hope that it will be useful,`
15			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
16			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
17			`GNU General Public License for more details.`
18
19			`You should have received a copy of the GNU General Public License`
20			`along with this program. If not, see <http://www.gnu.org/licenses/>. */`
21
22			`#include "defs.h"`
23			`#include <ctype.h>`
24			`#include "serial.h"`
25			`#include "gdb_string.h"`
26			`#include "gdbcmd.h"`
27
28			`extern void _initialize_serial (void);`
29
30			`/* Is serial being debugged? */`
31
32			`static int global_serial_debug_p;`
33
34			`/* Linked list of serial I/O handlers */`
35
36			`static struct serial_ops *serial_ops_list = NULL;`
37
38			`/* This is the last serial stream opened. Used by connect command. */`
39
40			`static struct serial *last_serial_opened = NULL;`
41
42			`/* Pointer to list of scb's. */`
43
44			`static struct serial *scb_base;`
45
46			`/* Non-NULL gives filename which contains a recording of the remote session,`
47			`suitable for playback by gdbserver. */`
48
49			`static char *serial_logfile = NULL;`
50			`static struct ui_file *serial_logfp = NULL;`
51
52			`static struct serial_ops serial_interface_lookup (char );`
53			`static void serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout);`
54			`static const char logbase_hex[] = "hex";`
55			`static const char logbase_octal[] = "octal";`
56			`static const char logbase_ascii[] = "ascii";`
57			`static const char *logbase_enums[] =`
58			`{logbase_hex, logbase_octal, logbase_ascii, NULL};`
59			`static const char *serial_logbase = logbase_ascii;`
60
61
62			`static int serial_current_type = 0;`
63
64			`/* Log char CH of type CHTYPE, with TIMEOUT */`
65
66			`/* Define bogus char to represent a BREAK. Should be careful to choose a value`
67			`that can't be confused with a normal char, or an error code. */`
68			`#define SERIAL_BREAK 1235`
69
70			`static void`
71			`serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout)`
72			`{`
73			`if (ch_type != serial_current_type)`
74			`{`
75			`fprintf_unfiltered (stream, "\n%c ", ch_type);`
76			`serial_current_type = ch_type;`
77			`}`
78
79			`if (serial_logbase != logbase_ascii)`
80			`fputc_unfiltered (' ', stream);`
81
82			`switch (ch)`
83			`{`
84			`case SERIAL_TIMEOUT:`
85			`fprintf_unfiltered (stream, "<Timeout: %d seconds>", timeout);`
86			`return;`
87			`case SERIAL_ERROR:`
88			`fprintf_unfiltered (stream, "<Error: %s>", safe_strerror (errno));`
89			`return;`
90			`case SERIAL_EOF:`
91			`fputs_unfiltered ("<Eof>", stream);`
92			`return;`
93			`case SERIAL_BREAK:`
94			`fputs_unfiltered ("<Break>", stream);`
95			`return;`
96			`default:`
97			`if (serial_logbase == logbase_hex)`
98			`fprintf_unfiltered (stream, "%02x", ch & 0xff);`
99			`else if (serial_logbase == logbase_octal)`
100			`fprintf_unfiltered (stream, "%03o", ch & 0xff);`
101			`else`
102			`switch (ch)`
103			`{`
104			`case '\\':`
105			`fputs_unfiltered ("\\\\", stream);`
106			`break;`
107			`case '\b':`
108			`fputs_unfiltered ("\\b", stream);`
109			`break;`
110			`case '\f':`
111			`fputs_unfiltered ("\\f", stream);`
112			`break;`
113			`case '\n':`
114			`fputs_unfiltered ("\\n", stream);`
115			`break;`
116			`case '\r':`
117			`fputs_unfiltered ("\\r", stream);`
118			`break;`
119			`case '\t':`
120			`fputs_unfiltered ("\\t", stream);`
121			`break;`
122			`case '\v':`
123			`fputs_unfiltered ("\\v", stream);`
124			`break;`
125			`default:`
126			`fprintf_unfiltered (stream, isprint (ch) ? "%c" : "\\x%02x", ch & 0xFF);`
127			`break;`
128			`}`
129			`}`
130			`}`
131
132			`void`
133			`serial_log_command (const char *cmd)`
134			`{`
135			`if (!serial_logfp)`
136			`return;`
137
138			`serial_current_type = 'c';`
139
140			`fputs_unfiltered ("\nc ", serial_logfp);`
141			`fputs_unfiltered (cmd, serial_logfp);`
142
143			`/* Make sure that the log file is as up-to-date as possible,`
144			`in case we are getting ready to dump core or something. */`
145			`gdb_flush (serial_logfp);`
146			`}`
147
148
149			`static struct serial_ops *`
150			`serial_interface_lookup (char *name)`
151			`{`
152			`struct serial_ops *ops;`
153
154			`for (ops = serial_ops_list; ops; ops = ops->next)`
155			`if (strcmp (name, ops->name) == 0)`
156			`return ops;`
157
158			`return NULL;`
159			`}`
160
161			`void`
162			`serial_add_interface (struct serial_ops *optable)`
163			`{`
164			`optable->next = serial_ops_list;`
165			`serial_ops_list = optable;`
166			`}`
167
168			`/* Open up a device or a network socket, depending upon the syntax of NAME. */`
169
170			`struct serial *`
171			`serial_open (const char *name)`
172			`{`
173			`struct serial *scb;`
174			`struct serial_ops *ops;`
175			`const char *open_name = name;`
176
177			`for (scb = scb_base; scb; scb = scb->next)`
178			`if (scb->name && strcmp (scb->name, name) == 0)`
179			`{`
180			`scb->refcnt++;`
181			`return scb;`
182			`}`
183
184			`if (strcmp (name, "pc") == 0)`
185			`ops = serial_interface_lookup ("pc");`
186			`else if (strncmp (name, "lpt", 3) == 0)`
187			`ops = serial_interface_lookup ("parallel");`
188			`else if (strncmp (name, "\|", 1) == 0)`
189			`{`
190			`ops = serial_interface_lookup ("pipe");`
191			/* Discard ``\|'' and any space before the command itself. */
192			`++open_name;`
193			`while (isspace (*open_name))`
194			`++open_name;`
195			`}`
196			`/* Check for a colon, suggesting an IP address/port pair.`
197			`Do this after checking for all the interesting prefixes. We`
198			`don't want to constrain the syntax of what can follow them. */`
199			`else if (strchr (name, ':'))`
200			`ops = serial_interface_lookup ("tcp");`
201			`else`
202			`ops = serial_interface_lookup ("hardwire");`
203
204			`if (!ops)`
205			`return NULL;`
206
207			`scb = XMALLOC (struct serial);`
208
209			`scb->ops = ops;`
210
211			`scb->bufcnt = 0;`
212			`scb->bufp = scb->buf;`
213			`scb->error_fd = -1;`
214
215			/* `...->open (...)' would get expanded by an the open(2) syscall macro. */
216			`if ((*scb->ops->open) (scb, open_name))`
217			`{`
218			`xfree (scb);`
219			`return NULL;`
220			`}`
221
222			`scb->name = xstrdup (name);`
223			`scb->next = scb_base;`
224			`scb->refcnt = 1;`
225			`scb->debug_p = 0;`
226			`scb->async_state = 0;`
227			`scb->async_handler = NULL;`
228			`scb->async_context = NULL;`
229			`scb_base = scb;`
230
231			`last_serial_opened = scb;`
232
233			`if (serial_logfile != NULL)`
234			`{`
235			`serial_logfp = gdb_fopen (serial_logfile, "w");`
236			`if (serial_logfp == NULL)`
237			`perror_with_name (serial_logfile);`
238			`}`
239
240			`return scb;`
241			`}`
242
243			`/* Return the open serial device for FD, if found, or NULL if FD`
244			`is not already opened. */`
245
246			`struct serial *`
247			`serial_for_fd (int fd)`
248			`{`
249			`struct serial *scb;`
250			`struct serial_ops *ops;`
251
252			`for (scb = scb_base; scb; scb = scb->next)`
253			`if (scb->fd == fd)`
254			`return scb;`
255
256			`return NULL;`
257			`}`
258
259			`struct serial *`
260			`serial_fdopen (const int fd)`
261			`{`
262			`struct serial *scb;`
263			`struct serial_ops *ops;`
264
265			`for (scb = scb_base; scb; scb = scb->next)`
266			`if (scb->fd == fd)`
267			`{`
268			`scb->refcnt++;`
269			`return scb;`
270			`}`
271
272			`ops = serial_interface_lookup ("terminal");`
273			`if (!ops)`
274			`ops = serial_interface_lookup ("hardwire");`
275
276			`if (!ops)`
277			`return NULL;`
278
279			`scb = XCALLOC (1, struct serial);`
280
281			`scb->ops = ops;`
282
283			`scb->bufcnt = 0;`
284			`scb->bufp = scb->buf;`
285
286			`scb->fd = fd;`
287
288			`scb->name = NULL;`
289			`scb->next = scb_base;`
290			`scb->refcnt = 1;`
291			`scb->debug_p = 0;`
292			`scb->async_state = 0;`
293			`scb->async_handler = NULL;`
294			`scb->async_context = NULL;`
295			`scb_base = scb;`
296
297			`last_serial_opened = scb;`
298
299			`return scb;`
300			`}`
301
302			`static void`
303			`do_serial_close (struct serial *scb, int really_close)`
304			`{`
305			`struct serial *tmp_scb;`
306
307			`last_serial_opened = NULL;`
308
309			`if (serial_logfp)`
310			`{`
311			`fputs_unfiltered ("\nEnd of log\n", serial_logfp);`
312			`serial_current_type = 0;`
313
314			`/* XXX - What if serial_logfp == gdb_stdout or gdb_stderr? */`
315			`ui_file_delete (serial_logfp);`
316			`serial_logfp = NULL;`
317			`}`
318
319			`/* This is bogus. It's not our fault if you pass us a bad scb...! Rob, you`
320			`should fix your code instead. */`
321
322			`if (!scb)`
323			`return;`
324
325			`scb->refcnt--;`
326			`if (scb->refcnt > 0)`
327			`return;`
328
329			`/* ensure that the FD has been taken out of async mode */`
330			`if (scb->async_handler != NULL)`
331			`serial_async (scb, NULL, NULL);`
332
333			`if (really_close)`
334			`scb->ops->close (scb);`
335
336			`if (scb->name)`
337			`xfree (scb->name);`
338
339			`if (scb_base == scb)`
340			`scb_base = scb_base->next;`
341			`else`
342			`for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)`
343			`{`
344			`if (tmp_scb->next != scb)`
345			`continue;`
346
347			`tmp_scb->next = tmp_scb->next->next;`
348			`break;`
349			`}`
350
351			`xfree (scb);`
352			`}`
353
354			`void`
355			`serial_close (struct serial *scb)`
356			`{`
357			`do_serial_close (scb, 1);`
358			`}`
359
360			`void`
361			`serial_un_fdopen (struct serial *scb)`
362			`{`
363			`do_serial_close (scb, 0);`
364			`}`
365
366			`int`
367			`serial_readchar (struct serial *scb, int timeout)`
368			`{`
369			`int ch;`
370
371			`/* FIXME: cagney/1999-10-11: Don't enable this check until the ASYNC`
372			`code is finished. */`
373			`if (0 && serial_is_async_p (scb) && timeout < 0)`
374			`internal_error (__FILE__, __LINE__,`
375			`_("serial_readchar: blocking read in async mode"));`
376
377			`ch = scb->ops->readchar (scb, timeout);`
378			`if (serial_logfp != NULL)`
379			`{`
380			`serial_logchar (serial_logfp, 'r', ch, timeout);`
381
382			`/* Make sure that the log file is as up-to-date as possible,`
383			`in case we are getting ready to dump core or something. */`
384			`gdb_flush (serial_logfp);`
385			`}`
386			`if (serial_debug_p (scb))`
387			`{`
388			`fprintf_unfiltered (gdb_stdlog, "[");`
389			`serial_logchar (gdb_stdlog, 'r', ch, timeout);`
390			`fprintf_unfiltered (gdb_stdlog, "]");`
391			`gdb_flush (gdb_stdlog);`
392			`}`
393
394			`return (ch);`
395			`}`
396
397			`int`
398			`serial_write (struct serial scb, const char str, int len)`
399			`{`
400			`if (serial_logfp != NULL)`
401			`{`
402			`int count;`
403
404			`for (count = 0; count < len; count++)`
405			`serial_logchar (serial_logfp, 'w', str[count] & 0xff, 0);`
406
407			`/* Make sure that the log file is as up-to-date as possible,`
408			`in case we are getting ready to dump core or something. */`
409			`gdb_flush (serial_logfp);`
410			`}`
411
412			`return (scb->ops->write (scb, str, len));`
413			`}`
414
415			`void`
416			`serial_printf (struct serial desc, const char format,...)`
417			`{`
418			`va_list args;`
419			`char *buf;`
420			`va_start (args, format);`
421
422			`buf = xstrvprintf (format, args);`
423			`serial_write (desc, buf, strlen (buf));`
424
425			`xfree (buf);`
426			`va_end (args);`
427			`}`
428
429			`int`
430			`serial_drain_output (struct serial *scb)`
431			`{`
432			`return scb->ops->drain_output (scb);`
433			`}`
434
435			`int`
436			`serial_flush_output (struct serial *scb)`
437			`{`
438			`return scb->ops->flush_output (scb);`
439			`}`
440
441			`int`
442			`serial_flush_input (struct serial *scb)`
443			`{`
444			`return scb->ops->flush_input (scb);`
445			`}`
446
447			`int`
448			`serial_send_break (struct serial *scb)`
449			`{`
450			`if (serial_logfp != NULL)`
451			`serial_logchar (serial_logfp, 'w', SERIAL_BREAK, 0);`
452
453			`return (scb->ops->send_break (scb));`
454			`}`
455
456			`void`
457			`serial_raw (struct serial *scb)`
458			`{`
459			`scb->ops->go_raw (scb);`
460			`}`
461
462			`serial_ttystate`
463			`serial_get_tty_state (struct serial *scb)`
464			`{`
465			`return scb->ops->get_tty_state (scb);`
466			`}`
467
468			`int`
469			`serial_set_tty_state (struct serial *scb, serial_ttystate ttystate)`
470			`{`
471			`return scb->ops->set_tty_state (scb, ttystate);`
472			`}`
473
474			`void`
475			`serial_print_tty_state (struct serial *scb,`
476			`serial_ttystate ttystate,`
477			`struct ui_file *stream)`
478			`{`
479			`scb->ops->print_tty_state (scb, ttystate, stream);`
480			`}`
481
482			`int`
483			`serial_noflush_set_tty_state (struct serial *scb,`
484			`serial_ttystate new_ttystate,`
485			`serial_ttystate old_ttystate)`
486			`{`
487			`return scb->ops->noflush_set_tty_state (scb, new_ttystate, old_ttystate);`
488			`}`
489
490			`int`
491			`serial_setbaudrate (struct serial *scb, int rate)`
492			`{`
493			`return scb->ops->setbaudrate (scb, rate);`
494			`}`
495
496			`int`
497			`serial_setstopbits (struct serial *scb, int num)`
498			`{`
499			`return scb->ops->setstopbits (scb, num);`
500			`}`
501
502			`int`
503			`serial_can_async_p (struct serial *scb)`
504			`{`
505			`return (scb->ops->async != NULL);`
506			`}`
507
508			`int`
509			`serial_is_async_p (struct serial *scb)`
510			`{`
511			`return (scb->ops->async != NULL) && (scb->async_handler != NULL);`
512			`}`
513
514			`void`
515			`serial_async (struct serial *scb,`
516			`serial_event_ftype *handler,`
517			`void *context)`
518			`{`
519			`int changed = ((scb->async_handler == NULL) != (handler == NULL));`
520			`scb->async_handler = handler;`
521			`scb->async_context = context;`
522			`/* Only change mode if there is a need. */`
523			`if (changed)`
524			`scb->ops->async (scb, handler != NULL);`
525			`}`
526
527			`int`
528			`deprecated_serial_fd (struct serial *scb)`
529			`{`
530			`/* FIXME: should this output a warning that deprecated code is being`
531			`called? */`
532			`if (scb->fd < 0)`
533			`{`
534			`internal_error (__FILE__, __LINE__,`
535			`_("serial: FD not valid"));`
536			`}`
537			`return scb->fd; /* sigh */`
538			`}`
539
540			`void`
541			`serial_debug (struct serial *scb, int debug_p)`
542			`{`
543			`scb->debug_p = debug_p;`
544			`}`
545
546			`int`
547			`serial_debug_p (struct serial *scb)`
548			`{`
549			`return scb->debug_p \|\| global_serial_debug_p;`
550			`}`
551
552			`#ifdef USE_WIN32API`
553			`void`
554			`serial_wait_handle (struct serial scb, HANDLE read, HANDLE *except)`
555			`{`
556			`if (scb->ops->wait_handle)`
557			`scb->ops->wait_handle (scb, read, except);`
558			`else`
559			`{`
560			`*read = (HANDLE) _get_osfhandle (scb->fd);`
561			`*except = NULL;`
562			`}`
563			`}`
564
565			`void`
566			`serial_done_wait_handle (struct serial *scb)`
567			`{`
568			`if (scb->ops->done_wait_handle)`
569			`scb->ops->done_wait_handle (scb);`
570			`}`
571			`#endif`
572
573			`#if 0`
574			`/* The connect command is #if 0 because I hadn't thought of an elegant`
575			way to wait for I/O on two `struct serial *'s simultaneously. Two
576			`solutions came to mind:`
577
578			`1) Fork, and have have one fork handle the to user direction,`
579			`and have the other hand the to target direction. This`
580			`obviously won't cut it for MSDOS.`
581
582			`2) Use something like select. This assumes that stdin and`
583			`the target side can both be waited on via the same`
584			`mechanism. This may not be true for DOS, if GDB is`
585			`talking to the target via a TCP socket.`
586			`-grossman, 8 Jun 93 */`
587
588			`/* Connect the user directly to the remote system. This command acts just like`
589			`the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */`
590
591			`static struct serial tty_desc; / Controlling terminal */`
592
593			`static void`
594			`cleanup_tty (serial_ttystate ttystate)`
595			`{`
596			`printf_unfiltered ("\r\n[Exiting connect mode]\r\n");`
597			`serial_set_tty_state (tty_desc, ttystate);`
598			`xfree (ttystate);`
599			`serial_close (tty_desc);`
600			`}`
601
602			`static void`
603			`connect_command (char *args, int fromtty)`
604			`{`
605			`int c;`
606			`char cur_esc = 0;`
607			`serial_ttystate ttystate;`
608			`struct serial port_desc; / TTY port */`
609
610			`dont_repeat ();`
611
612			`if (args)`
613			`fprintf_unfiltered (gdb_stderr, "This command takes no args. They have been ignored.\n");`
614
615			`printf_unfiltered ("[Entering connect mode. Use ~. or ~^D to escape]\n");`
616
617			`tty_desc = serial_fdopen (0);`
618			`port_desc = last_serial_opened;`
619
620			`ttystate = serial_get_tty_state (tty_desc);`
621
622			`serial_raw (tty_desc);`
623			`serial_raw (port_desc);`
624
625			`make_cleanup (cleanup_tty, ttystate);`
626
627			`while (1)`
628			`{`
629			`int mask;`
630
631			`mask = serial_wait_2 (tty_desc, port_desc, -1);`
632
633			`if (mask & 2)`
634			`{ /* tty input */`
635			`char cx;`
636
637			`while (1)`
638			`{`
639			`c = serial_readchar (tty_desc, 0);`
640
641			`if (c == SERIAL_TIMEOUT)`
642			`break;`
643
644			`if (c < 0)`
645			`perror_with_name (_("connect"));`
646
647			`cx = c;`
648			`serial_write (port_desc, &cx, 1);`
649
650			`switch (cur_esc)`
651			`{`
652			`case 0:`
653			`if (c == '\r')`
654			`cur_esc = c;`
655			`break;`
656			`case '\r':`
657			`if (c == '~')`
658			`cur_esc = c;`
659			`else`
660			`cur_esc = 0;`
661			`break;`
662			`case '~':`
663			`if (c == '.' \|\| c == '\004')`
664			`return;`
665			`else`
666			`cur_esc = 0;`
667			`}`
668			`}`
669			`}`
670
671			`if (mask & 1)`
672			`{ /* Port input */`
673			`char cx;`
674
675			`while (1)`
676			`{`
677			`c = serial_readchar (port_desc, 0);`
678
679			`if (c == SERIAL_TIMEOUT)`
680			`break;`
681
682			`if (c < 0)`
683			`perror_with_name (_("connect"));`
684
685			`cx = c;`
686
687			`serial_write (tty_desc, &cx, 1);`
688			`}`
689			`}`
690			`}`
691			`}`
692			`#endif /* 0 */`
693
694			`/* Serial set/show framework. */`
695
696			`static struct cmd_list_element *serial_set_cmdlist;`
697			`static struct cmd_list_element *serial_show_cmdlist;`
698
699			`static void`
700			`serial_set_cmd (char *args, int from_tty)`
701			`{`
702			`printf_unfiltered ("\"set serial\" must be followed by the name of a command.\n");`
703			`help_list (serial_set_cmdlist, "set serial ", -1, gdb_stdout);`
704			`}`
705
706			`static void`
707			`serial_show_cmd (char *args, int from_tty)`
708			`{`
709			`cmd_show_list (serial_show_cmdlist, from_tty, "");`
710			`}`
711
712
713			`void`
714			`_initialize_serial (void)`
715			`{`
716			`#if 0`
717			`add_com ("connect", class_obscure, connect_command, _("\`
718			`Connect the terminal directly up to the command monitor.\n\`
719			`Use <CR>~. or <CR>~^D to break out."));`
720			`#endif /* 0 */`
721
722			`add_prefix_cmd ("serial", class_maintenance, serial_set_cmd, _("\`
723			`Set default serial/parallel port configuration."),`
724			`&serial_set_cmdlist, "set serial ",`
725			`0/allow-unknown/,`
726			`&setlist);`
727
728			`add_prefix_cmd ("serial", class_maintenance, serial_show_cmd, _("\`
729			`Show default serial/parallel port configuration."),`
730			`&serial_show_cmdlist, "show serial ",`
731			`0/allow-unknown/,`
732			`&showlist);`
733
734			`add_setshow_filename_cmd ("remotelogfile", no_class, &serial_logfile, _("\`
735			`Set filename for remote session recording."), _("\`
736			`Show filename for remote session recording."), _("\`
737			`This file is used to record the remote session for future playback\n\`
738			`by gdbserver."),`
739			`NULL,`
740			`NULL, /* FIXME: i18n: */`
741			`&setlist, &showlist);`
742
743			`add_setshow_enum_cmd ("remotelogbase", no_class, logbase_enums,`
744			`&serial_logbase, _("\`
745			`Set numerical base for remote session logging"), _("\`
746			`Show numerical base for remote session logging"), NULL,`
747			`NULL,`
748			`NULL, /* FIXME: i18n: */`
749			`&setlist, &showlist);`
750
751			`add_setshow_zinteger_cmd ("serial", class_maintenance,`
752			`&global_serial_debug_p, _("\`
753			`Set serial debugging."), _("\`
754			`Show serial debugging."), _("\`
755			`When non-zero, serial port debugging is enabled."),`
756			`NULL,`
757			`NULL, /* FIXME: i18n: */`
758			`&setdebuglist, &showdebuglist);`
759			`}`