/* Serial interface for local (hardwired) serial ports on Un*x like systems
- Copyright 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of GDB.
#ifdef HAVE_SGTTY
if (ioctl (scb->fd, TIOCSETN, &state->sgttyb) < 0)
return -1;
+ if (ioctl (scb->fd, TIOCSETC, &state->tc) < 0)
+ return -1;
+ if (ioctl (scb->fd, TIOCSLTC, &state->ltc) < 0)
+ return -1;
+ if (ioctl (scb->fd, TIOCLSET, &state->lmode) < 0)
+ return -1;
return 0;
#endif
new_state = *(struct hardwire_ttystate *)new_ttystate;
-#ifdef HAVE_TERMIOS
- /* I'm not sure whether this is necessary; the manpage makes no mention
- of discarding input when switching to/from ICANON. */
- if (state->termios.c_lflag & ICANON)
- new_state.termios.c_lflag |= ICANON;
- else
- new_state.termios.c_lflag &= ~ICANON;
-#endif
-
-#ifdef HAVE_TERMIO
- /* I'm not sure whether this is necessary; the manpage makes no mention
- of discarding input when switching to/from ICANON. */
- if (state->termio.c_lflag & ICANON)
- new_state.termio.c_lflag |= ICANON;
- else
- new_state.termio.c_lflag &= ~ICANON;
-#endif
+ /* Don't change in or out of raw mode; we don't want to flush input.
+ termio and termios have no such restriction; for them flushing input
+ is separate from setting the attributes. */
#ifdef HAVE_SGTTY
if (state->sgttyb.sg_flags & RAW)
struct hardwire_ttystate state;
if (get_tty_state(scb, &state))
- fprintf(stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
+ fprintf_unfiltered(gdb_stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
#ifdef HAVE_TERMIOS
state.termios.c_iflag = 0;
state.termios.c_oflag = 0;
state.termios.c_lflag = 0;
state.termios.c_cflag &= ~(CSIZE|PARENB);
- state.termios.c_cflag |= CS8;
+ state.termios.c_cflag |= CLOCAL | CS8;
state.termios.c_cc[VMIN] = 0;
state.termios.c_cc[VTIME] = 0;
#endif
state.termio.c_oflag = 0;
state.termio.c_lflag = 0;
state.termio.c_cflag &= ~(CSIZE|PARENB);
- state.termio.c_cflag |= CS8;
+ state.termio.c_cflag |= CLOCAL | CS8;
state.termio.c_cc[VMIN] = 0;
state.termio.c_cc[VTIME] = 0;
#endif
scb->current_timeout = 0;
if (set_tty_state (scb, &state))
- fprintf(stderr, "set_tty_state failed: %s\n", safe_strerror(errno));
+ fprintf_unfiltered(gdb_stderr, "set_tty_state failed: %s\n", safe_strerror(errno));
}
/* Wait for input on scb, with timeout seconds. Returns 0 on success,
serial_t scb;
int timeout;
{
+ scb->timeout_remaining = 0;
+
#ifdef HAVE_SGTTY
- struct timeval tv;
- fd_set readfds;
+ {
+ struct timeval tv;
+ fd_set readfds;
- FD_ZERO (&readfds);
+ FD_ZERO (&readfds);
- tv.tv_sec = timeout;
- tv.tv_usec = 0;
+ tv.tv_sec = timeout;
+ tv.tv_usec = 0;
- FD_SET(scb->fd, &readfds);
+ FD_SET(scb->fd, &readfds);
- while (1)
- {
- int numfds;
-
- if (timeout >= 0)
- numfds = select(scb->fd+1, &readfds, 0, 0, &tv);
- else
- numfds = select(scb->fd+1, &readfds, 0, 0, 0);
-
- if (numfds <= 0)
- if (numfds == 0)
- return SERIAL_TIMEOUT;
- else if (errno == EINTR)
- continue;
- else
- return SERIAL_ERROR; /* Got an error from select or poll */
-
- return 0;
- }
+ while (1)
+ {
+ int numfds;
+ if (timeout >= 0)
+ numfds = select(scb->fd+1, &readfds, 0, 0, &tv);
+ else
+ numfds = select(scb->fd+1, &readfds, 0, 0, 0);
+
+ if (numfds <= 0)
+ if (numfds == 0)
+ return SERIAL_TIMEOUT;
+ else if (errno == EINTR)
+ continue;
+ else
+ return SERIAL_ERROR; /* Got an error from select or poll */
+
+ return 0;
+ }
+ }
#endif /* HAVE_SGTTY */
#if defined HAVE_TERMIO || defined HAVE_TERMIOS
if (timeout == scb->current_timeout)
return 0;
+ scb->current_timeout = timeout;
+
{
struct hardwire_ttystate state;
if (get_tty_state(scb, &state))
- fprintf(stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
+ fprintf_unfiltered(gdb_stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
#ifdef HAVE_TERMIOS
- state.termios.c_cc[VTIME] = timeout * 10;
+ if (timeout < 0)
+ {
+ /* No timeout. */
+ state.termios.c_cc[VTIME] = 0;
+ state.termios.c_cc[VMIN] = 1;
+ }
+ else
+ {
+ state.termios.c_cc[VMIN] = 0;
+ state.termios.c_cc[VTIME] = timeout * 10;
+ if (state.termios.c_cc[VTIME] != timeout * 10)
+ {
+
+ /* If c_cc is an 8-bit signed character, we can't go
+ bigger than this. If it is always unsigned, we could use
+ 25. */
+
+ scb->current_timeout = 12;
+ state.termios.c_cc[VTIME] = scb->current_timeout * 10;
+ scb->timeout_remaining = timeout - scb->current_timeout;
+ }
+ }
#endif
#ifdef HAVE_TERMIO
- state.termio.c_cc[VTIME] = timeout * 10;
+ if (timeout < 0)
+ {
+ /* No timeout. */
+ state.termio.c_cc[VTIME] = 0;
+ state.termio.c_cc[VMIN] = 1;
+ }
+ else
+ {
+ state.termio.c_cc[VMIN] = 0;
+ state.termio.c_cc[VTIME] = timeout * 10;
+ if (state.termio.c_cc[VTIME] != timeout * 10)
+ {
+ /* If c_cc is an 8-bit signed character, we can't go
+ bigger than this. If it is always unsigned, we could use
+ 25. */
+
+ scb->current_timeout = 12;
+ state.termio.c_cc[VTIME] = scb->current_timeout * 10;
+ scb->timeout_remaining = timeout - scb->current_timeout;
+ }
+ }
#endif
- scb->current_timeout = timeout;
-
if (set_tty_state (scb, &state))
- fprintf(stderr, "set_tty_state failed: %s\n", safe_strerror(errno));
+ fprintf_unfiltered(gdb_stderr, "set_tty_state failed: %s\n", safe_strerror(errno));
return 0;
}
if (scb->bufcnt-- > 0)
return *scb->bufp++;
- status = wait_for(scb, timeout);
-
- if (status < 0)
- return status;
-
- scb->bufcnt = read(scb->fd, scb->buf, BUFSIZ);
-
- if (scb->bufcnt <= 0)
- if (scb->bufcnt == 0)
- return SERIAL_TIMEOUT; /* 0 chars means timeout [may need to
- distinguish between EOF & timeouts
- someday] */
- else
- return SERIAL_ERROR; /* Got an error from read */
-
- scb->bufcnt--;
- scb->bufp = scb->buf;
- return *scb->bufp++;
+ while (1)
+ {
+ status = wait_for (scb, timeout);
+
+ if (status < 0)
+ return status;
+
+ scb->bufcnt = read (scb->fd, scb->buf, BUFSIZ);
+
+ if (scb->bufcnt <= 0)
+ {
+ if (scb->bufcnt == 0)
+ {
+ /* Zero characters means timeout (it could also be EOF, but
+ we don't (yet at least) distinguish). */
+ if (scb->timeout_remaining > 0)
+ {
+ timeout = scb->timeout_remaining;
+ continue;
+ }
+ else
+ return SERIAL_TIMEOUT;
+ }
+ else if (errno == EINTR)
+ continue;
+ else
+ return SERIAL_ERROR; /* Got an error from read */
+ }
+
+ scb->bufcnt--;
+ scb->bufp = scb->buf;
+ return *scb->bufp++;
+ }
}
#ifndef B19200
return set_tty_state (scb, &state);
}
+static int
+hardwire_setstopbits(scb, num)
+ serial_t scb;
+ int num;
+{
+ struct hardwire_ttystate state;
+ int newbit;
+
+ if (get_tty_state(scb, &state))
+ return -1;
+
+ switch (num)
+ {
+ case SERIAL_1_STOPBITS:
+ newbit = 0;
+ break;
+ case SERIAL_1_AND_A_HALF_STOPBITS:
+ case SERIAL_2_STOPBITS:
+ newbit = 1;
+ break;
+ default:
+ return 1;
+ }
+
+#ifdef HAVE_TERMIOS
+ if (!newbit)
+ state.termios.c_cflag &= ~CSTOPB;
+ else
+ state.termios.c_cflag |= CSTOPB; /* two bits */
+#endif
+
+#ifdef HAVE_TERMIO
+ if (!newbit)
+ state.termio.c_cflag &= ~CSTOPB;
+ else
+ state.termio.c_cflag |= CSTOPB; /* two bits */
+#endif
+
+#ifdef HAVE_SGTTY
+ return 0; /* sgtty doesn't support this */
+#endif
+
+ return set_tty_state (scb, &state);
+}
+
static int
hardwire_write(scb, str, len)
serial_t scb;
hardwire_print_tty_state,
hardwire_noflush_set_tty_state,
hardwire_setbaudrate,
+ hardwire_setstopbits,
};
void