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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
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