1 /* Generic serial interface routines
2 Copyright 1992, 1993 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 /* Linked list of serial I/O handlers */
25 static struct serial_ops
*serial_ops_list
= NULL
;
27 /* This is the last serial stream opened. Used by connect command. */
29 static serial_t last_serial_opened
= NULL
;
31 static struct serial_ops
*
32 serial_interface_lookup (name
)
35 struct serial_ops
*ops
;
37 for (ops
= serial_ops_list
; ops
; ops
= ops
->next
)
38 if (strcmp (name
, ops
->name
) == 0)
45 serial_add_interface(optable
)
46 struct serial_ops
*optable
;
48 optable
->next
= serial_ops_list
;
49 serial_ops_list
= optable
;
52 /* Open up a device or a network socket, depending upon the syntax of NAME. */
59 struct serial_ops
*ops
;
61 if (strchr (name
, ':'))
62 ops
= serial_interface_lookup ("tcp");
64 ops
= serial_interface_lookup ("hardwire");
69 scb
= (serial_t
)xmalloc (sizeof (struct _serial_t
));
76 if (scb
->ops
->open(scb
, name
))
82 last_serial_opened
= scb
;
92 struct serial_ops
*ops
;
94 ops
= serial_interface_lookup ("hardwire");
99 scb
= (serial_t
)xmalloc (sizeof (struct _serial_t
));
104 scb
->bufp
= scb
->buf
;
108 last_serial_opened
= scb
;
117 last_serial_opened
= NULL
;
119 scb
->ops
->close(scb
);
126 The connect command is #if 0 because I hadn't thought of an elegant
127 way to wait for I/O on two serial_t's simultaneously. Two solutions
130 1) Fork, and have have one fork handle the to user direction,
131 and have the other hand the to target direction. This
132 obviously won't cut it for MSDOS.
134 2) Use something like select. This assumes that stdin and
135 the target side can both be waited on via the same
136 mechanism. This may not be true for DOS, if GDB is
137 talking to the target via a TCP socket.
141 /* Connect the user directly to the remote system. This command acts just like
142 the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
144 static serial_t tty_desc
; /* Controlling terminal */
147 cleanup_tty(ttystate
)
148 serial_ttystate ttystate
;
150 printf ("\r\n[Exiting connect mode]\r\n");
151 SERIAL_SET_TTY_STATE (tty_desc
, ttystate
);
153 SERIAL_CLOSE (tty_desc
);
157 connect_command (args
, fromtty
)
163 serial_ttystate ttystate
;
164 serial_t port_desc
; /* TTY port */
169 fprintf(stderr
, "This command takes no args. They have been ignored.\n");
171 printf("[Entering connect mode. Use ~. or ~^D to escape]\n");
173 tty_desc
= SERIAL_FDOPEN (0);
174 port_desc
= last_serial_opened
;
176 ttystate
= SERIAL_GET_TTY_STATE (tty_desc
);
178 SERIAL_RAW (tty_desc
);
179 SERIAL_RAW (port_desc
);
181 make_cleanup (cleanup_tty
, ttystate
);
187 mask
= SERIAL_WAIT_2 (tty_desc
, port_desc
, -1);
195 c
= SERIAL_READCHAR(tty_desc
, 0);
197 if (c
== SERIAL_TIMEOUT
)
201 perror_with_name("connect");
204 SERIAL_WRITE(port_desc
, &cx
, 1);
219 if (c
== '.' || c
== '\004')
233 c
= SERIAL_READCHAR(port_desc
, 0);
235 if (c
== SERIAL_TIMEOUT
)
239 perror_with_name("connect");
243 SERIAL_WRITE(tty_desc
, &cx
, 1);
250 _initialize_serial ()
252 add_com ("connect", class_obscure
, connect_command
,
253 "Connect the terminal directly up to the command monitor.\n\
254 Use <CR>~. or <CR>~^D to break out.");