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 /* This is bogus. It's not our fault if you pass us a bad scb...! Rob, you
120 should fix your code instead. */
125 scb->ops->close(scb);
131 The connect command is #if 0 because I hadn't thought of an elegant
132 way to wait for I/O on two serial_t's simultaneously. Two solutions
135 1) Fork, and have have one fork handle the to user direction,
136 and have the other hand the to target direction. This
137 obviously won't cut it for MSDOS.
139 2) Use something like select. This assumes that stdin and
140 the target side can both be waited on via the same
141 mechanism. This may not be true for DOS, if GDB is
142 talking to the target via a TCP socket.
146 /* Connect the user directly to the remote system. This command acts just like
147 the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */
149 static serial_t tty_desc; /* Controlling terminal */
152 cleanup_tty(ttystate)
153 serial_ttystate ttystate;
155 printf ("\r\n[Exiting connect mode]\r\n");
156 SERIAL_SET_TTY_STATE (tty_desc, ttystate);
158 SERIAL_CLOSE (tty_desc);
162 connect_command (args, fromtty)
168 serial_ttystate ttystate;
169 serial_t port_desc; /* TTY port */
174 fprintf(stderr, "This command takes no args. They have been ignored.\n");
176 printf("[Entering connect mode. Use ~. or ~^D to escape]\n");
178 tty_desc = SERIAL_FDOPEN (0);
179 port_desc = last_serial_opened;
181 ttystate = SERIAL_GET_TTY_STATE (tty_desc);
183 SERIAL_RAW (tty_desc);
184 SERIAL_RAW (port_desc);
186 make_cleanup (cleanup_tty, ttystate);
192 mask = SERIAL_WAIT_2 (tty_desc, port_desc, -1);
200 c = SERIAL_READCHAR(tty_desc, 0);
202 if (c == SERIAL_TIMEOUT)
206 perror_with_name("connect");
209 SERIAL_WRITE(port_desc, &cx, 1);
224 if (c == '.' || c == '\004')
238 c = SERIAL_READCHAR(port_desc, 0);
240 if (c == SERIAL_TIMEOUT)
244 perror_with_name("connect");
248 SERIAL_WRITE(tty_desc, &cx, 1);
255 _initialize_serial ()
257 add_com ("connect", class_obscure, connect_command,
258 "Connect the terminal directly up to the command monitor.\n\
259 Use <CR>~. or <CR>~^D to break out.");