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- /* Generic serial interface routines
- Copyright 1992, 1993 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 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "defs.h"
- #include "serial.h"
-
- /* Open up a device or a network socket, depending upon the syntax of NAME. */
-
- static struct serial_ops *serial_ops_list = NULL;
-
- static struct serial_ops *
- serial_interface_lookup (name)
- 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(optable)
- struct serial_ops *optable;
- {
- optable->next = serial_ops_list;
- serial_ops_list = optable;
- }
-
- serial_t
- serial_open(name)
- const char *name;
- {
- serial_t scb;
- struct serial_ops *ops;
-
- ops = serial_interface_lookup ("hardwire");
-
- if (!ops)
- return NULL;
-
- scb = (serial_t)xmalloc (sizeof (struct _serial_t));
-
- scb->ops = ops;
-
- scb->bufcnt = 0;
- scb->bufp = scb->buf;
-
- if (scb->ops->open(scb, name))
- {
- free (scb);
- return NULL;
- }
-
- return scb;
- }
-
- void
- serial_close(scb)
- serial_t scb;
- {
- scb->ops->close(scb);
-
- free(scb);
- }
-
- #if 0
- /* 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 void
- cleanup_tty(ttystate)
- struct ttystate ttystate;
- {
- printf("\r\n[Exiting connect mode]\r\n");
- serial_restore(0, &ttystate);
- }
-
- static void
- connect_command (args, fromtty)
- char *args;
- int fromtty;
- {
- fd_set readfds;
- int numfds;
- int c;
- char cur_esc = 0;
- static struct ttystate ttystate;
-
- dont_repeat();
-
- if (desc < 0)
- error("target not open.");
-
- if (args)
- fprintf("This command takes no args. They have been ignored.\n");
-
- printf("[Entering connect mode. Use ~. or ~^D to escape]\n");
-
- serial_raw(0, &ttystate);
-
- make_cleanup(cleanup_tty, &ttystate);
-
- FD_ZERO(&readfds);
-
- while (1)
- {
- do
- {
- FD_SET(0, &readfds);
- FD_SET(desc, &readfds);
- numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0);
- }
- while (numfds == 0);
-
- if (numfds < 0)
- perror_with_name("select");
-
- if (FD_ISSET(0, &readfds))
- { /* tty input, send to stdebug */
- char cx;
-
- c = serial_readchar(-1);
- if (c < 0)
- perror_with_name("connect");
-
- cx = c;
- serial_write(&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 (FD_ISSET(desc, &readfds))
- {
- while (1)
- {
- c = serial_readchar(-1);
- if (c < 0)
- break;
- putchar(c);
- }
- fflush(stdout);
- }
- }
- }
- #endif
-
- #if 0
- void
- _initialize_serial ()
- {
- 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
-