/* Serial interface for local (hardwired) serial ports on Un*x like systems
- Copyright 1992, 1993, 1994, 1998-1999 Free Software Foundation, Inc.
+
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2003,
+ 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of GDB.
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "serial.h"
+#include "ser-base.h"
#include "ser-unix.h"
#include <fcntl.h>
#include <sys/types.h>
#include "terminal.h"
-#ifdef HAVE_SYS_WAIT_H
-#include <sys/wait.h>
-#endif
#include <sys/socket.h>
#include <sys/time.h>
+#include "gdb_select.h"
#include "gdb_string.h"
-#include "event-loop.h"
-
+#include "gdbcmd.h"
#ifdef HAVE_TERMIOS
{
struct termios termios;
};
+
+#ifdef CRTSCTS
+/* Boolean to explicitly enable or disable h/w flow control. */
+static int serial_hwflow;
+static void
+show_serial_hwflow (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Hardware flow control is %s.\n"), value);
+}
+#endif
+
#endif /* termios */
#ifdef HAVE_TERMIO
};
#endif /* sgtty */
-static int hardwire_open (serial_t scb, const char *name);
-static void hardwire_raw (serial_t scb);
-static int wait_for (serial_t scb, int timeout);
-static int hardwire_readchar (serial_t scb, int timeout);
+static int hardwire_open (struct serial *scb, const char *name);
+static void hardwire_raw (struct serial *scb);
+static int wait_for (struct serial *scb, int timeout);
+static int hardwire_readchar (struct serial *scb, int timeout);
+static int do_hardwire_readchar (struct serial *scb, int timeout);
static int rate_to_code (int rate);
-static int hardwire_setbaudrate (serial_t scb, int rate);
-static int hardwire_write (serial_t scb, const char *str, int len);
-static void hardwire_close (serial_t scb);
-static int get_tty_state (serial_t scb, struct hardwire_ttystate * state);
-static int set_tty_state (serial_t scb, struct hardwire_ttystate * state);
-static serial_ttystate hardwire_get_tty_state (serial_t scb);
-static int hardwire_set_tty_state (serial_t scb, serial_ttystate state);
-static int hardwire_noflush_set_tty_state (serial_t, serial_ttystate,
- serial_ttystate);
-static void hardwire_print_tty_state (serial_t, serial_ttystate, struct gdb_file *);
-static int hardwire_drain_output (serial_t);
-static int hardwire_flush_output (serial_t);
-static int hardwire_flush_input (serial_t);
-static int hardwire_send_break (serial_t);
-static int hardwire_setstopbits (serial_t, int);
+static int hardwire_setbaudrate (struct serial *scb, int rate);
+static void hardwire_close (struct serial *scb);
+static int get_tty_state (struct serial *scb,
+ struct hardwire_ttystate * state);
+static int set_tty_state (struct serial *scb,
+ struct hardwire_ttystate * state);
+static serial_ttystate hardwire_get_tty_state (struct serial *scb);
+static int hardwire_set_tty_state (struct serial *scb, serial_ttystate state);
+static int hardwire_noflush_set_tty_state (struct serial *, serial_ttystate,
+ serial_ttystate);
+static void hardwire_print_tty_state (struct serial *, serial_ttystate,
+ struct ui_file *);
+static int hardwire_drain_output (struct serial *);
+static int hardwire_flush_output (struct serial *);
+static int hardwire_flush_input (struct serial *);
+static int hardwire_send_break (struct serial *);
+static int hardwire_setstopbits (struct serial *, int);
void _initialize_ser_hardwire (void);
-extern int (*ui_loop_hook) (int);
-
/* Open up a real live device for serial I/O */
static int
-hardwire_open (serial_t scb, const char *name)
+hardwire_open (struct serial *scb, const char *name)
{
scb->fd = open (name, O_RDWR);
if (scb->fd < 0)
}
static int
-get_tty_state (serial_t scb, struct hardwire_ttystate *state)
+get_tty_state (struct serial *scb, struct hardwire_ttystate *state)
{
#ifdef HAVE_TERMIOS
if (tcgetattr (scb->fd, &state->termios) < 0)
}
static int
-set_tty_state (serial_t scb, struct hardwire_ttystate *state)
+set_tty_state (struct serial *scb, struct hardwire_ttystate *state)
{
#ifdef HAVE_TERMIOS
if (tcsetattr (scb->fd, TCSANOW, &state->termios) < 0)
}
static serial_ttystate
-hardwire_get_tty_state (serial_t scb)
+hardwire_get_tty_state (struct serial *scb)
{
struct hardwire_ttystate *state;
}
static int
-hardwire_set_tty_state (serial_t scb, serial_ttystate ttystate)
+hardwire_set_tty_state (struct serial *scb, serial_ttystate ttystate)
{
struct hardwire_ttystate *state;
}
static int
-hardwire_noflush_set_tty_state (serial_t scb,
+hardwire_noflush_set_tty_state (struct serial *scb,
serial_ttystate new_ttystate,
serial_ttystate old_ttystate)
{
}
static void
-hardwire_print_tty_state (serial_t scb,
+hardwire_print_tty_state (struct serial *scb,
serial_ttystate ttystate,
- struct gdb_file *stream)
+ struct ui_file *stream)
{
struct hardwire_ttystate *state = (struct hardwire_ttystate *) ttystate;
int i;
#ifdef HAVE_TERMIOS
fprintf_filtered (stream, "c_iflag = 0x%x, c_oflag = 0x%x,\n",
- state->termios.c_iflag, state->termios.c_oflag);
+ (int) state->termios.c_iflag,
+ (int) state->termios.c_oflag);
fprintf_filtered (stream, "c_cflag = 0x%x, c_lflag = 0x%x\n",
- state->termios.c_cflag, state->termios.c_lflag);
+ (int) state->termios.c_cflag,
+ (int) state->termios.c_lflag);
#if 0
/* This not in POSIX, and is not really documented by those systems
which have it (at least not Sun). */
fprintf_filtered (stream, "tchars: ");
for (i = 0; i < (int) sizeof (struct tchars); i++)
fprintf_filtered (stream, "0x%x ", ((unsigned char *) &state->tc)[i]);
- fprintf_filtered ("\n");
+ fprintf_filtered (stream, "\n");
fprintf_filtered (stream, "ltchars: ");
for (i = 0; i < (int) sizeof (struct ltchars); i++)
/* Wait for the output to drain away, as opposed to flushing (discarding) it */
static int
-hardwire_drain_output (serial_t scb)
+hardwire_drain_output (struct serial *scb)
{
#ifdef HAVE_TERMIOS
return tcdrain (scb->fd);
}
static int
-hardwire_flush_output (serial_t scb)
+hardwire_flush_output (struct serial *scb)
{
#ifdef HAVE_TERMIOS
return tcflush (scb->fd, TCOFLUSH);
}
static int
-hardwire_flush_input (serial_t scb)
+hardwire_flush_input (struct serial *scb)
{
- scb->bufcnt = 0;
- scb->bufp = scb->buf;
+ ser_base_flush_input (scb);
#ifdef HAVE_TERMIOS
return tcflush (scb->fd, TCIFLUSH);
}
static int
-hardwire_send_break (serial_t scb)
+hardwire_send_break (struct serial *scb)
{
#ifdef HAVE_TERMIOS
return tcsendbreak (scb->fd, 0);
the full length of time. I think that is OK. */
timeout.tv_sec = 0;
timeout.tv_usec = 250000;
- select (0, 0, 0, 0, &timeout);
+ gdb_select (0, 0, 0, 0, &timeout);
status = ioctl (scb->fd, TIOCCBRK, 0);
return status;
}
}
static void
-hardwire_raw (serial_t scb)
+hardwire_raw (struct serial *scb)
{
struct hardwire_ttystate state;
state.termios.c_lflag = 0;
state.termios.c_cflag &= ~(CSIZE | PARENB);
state.termios.c_cflag |= CLOCAL | CS8;
+#ifdef CRTSCTS
+ /* h/w flow control. */
+ if (serial_hwflow)
+ state.termios.c_cflag |= CRTSCTS;
+ else
+ state.termios.c_cflag &= ~CRTSCTS;
+#ifdef CRTS_IFLOW
+ if (serial_hwflow)
+ state.termios.c_cflag |= CRTS_IFLOW;
+ else
+ state.termios.c_cflag &= ~CRTS_IFLOW;
+#endif
+#endif
state.termios.c_cc[VMIN] = 0;
state.termios.c_cc[VTIME] = 0;
#endif
timeout occur in the read() in hardwire_read().
*/
-/* FIXME: Don't replace this with the equivalent ser_unix*() until the
- old TERMIOS/SGTTY/... timer code has been flushed. cagney
- 1999-09-16. */
+/* FIXME: cagney/1999-09-16: Don't replace this with the equivalent
+ ser_base*() until the old TERMIOS/SGTTY/... timer code has been
+ flushed. . */
+
+/* NOTE: cagney/1999-09-30: Much of the code below is dead. The only
+ possible values of the TIMEOUT parameter are ONE and ZERO.
+ Consequently all the code that tries to handle the possability of
+ an overflowed timer is unnecessary. */
static int
-wait_for (serial_t scb, int timeout)
+wait_for (struct serial *scb, int timeout)
{
#ifdef HAVE_SGTTY
- {
- struct timeval tv;
- fd_set readfds;
+ while (1)
+ {
+ struct timeval tv;
+ fd_set readfds;
+ int numfds;
- FD_ZERO (&readfds);
+ /* NOTE: Some OS's can scramble the READFDS when the select()
+ call fails (ex the kernel with Red Hat 5.2). Initialize all
+ arguments before each call. */
- tv.tv_sec = timeout;
- tv.tv_usec = 0;
+ tv.tv_sec = timeout;
+ tv.tv_usec = 0;
- FD_SET (scb->fd, &readfds);
+ FD_ZERO (&readfds);
+ FD_SET (scb->fd, &readfds);
- while (1)
- {
- int numfds;
+ if (timeout >= 0)
+ numfds = gdb_select (scb->fd + 1, &readfds, 0, 0, &tv);
+ else
+ numfds = gdb_select (scb->fd + 1, &readfds, 0, 0, 0);
- if (timeout >= 0)
- numfds = select (scb->fd + 1, &readfds, 0, 0, &tv);
+ if (numfds <= 0)
+ if (numfds == 0)
+ return SERIAL_TIMEOUT;
+ else if (errno == EINTR)
+ continue;
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 SERIAL_ERROR; /* Got an error from select or poll */
- return 0;
- }
- }
+ return 0;
+ }
#endif /* HAVE_SGTTY */
#if defined HAVE_TERMIO || defined HAVE_TERMIOS
dropped dead, or SERIAL_ERROR for any other error (see errno in that case). */
/* FIXME: cagney/1999-09-16: Don't replace this with the equivalent
- ser_unix*() until the old TERMIOS/SGTTY/... timer code has been
+ ser_base*() until the old TERMIOS/SGTTY/... timer code has been
flushed. */
/* NOTE: cagney/1999-09-16: This function is not identical to
- ser_unix_readchar() as part of replacing it with ser_unix*()
+ ser_base_readchar() as part of replacing it with ser_base*()
merging will be required - this code handles the case where read()
- times out due to no data while ser_unix_readchar() doesn't expect
+ times out due to no data while ser_base_readchar() doesn't expect
that. */
static int
-hardwire_readchar (serial_t scb, int timeout)
+do_hardwire_readchar (struct serial *scb, int timeout)
{
int status, delta;
int detach = 0;
- if (scb->bufcnt-- > 0)
- return *scb->bufp++;
-
if (timeout > 0)
timeout++;
- /* We have to be able to keep the GUI alive here, so we break the original
- timeout into steps of 1 second, running the "keep the GUI alive" hook
- each time through the loop.
- Also, timeout = 0 means to poll, so we just set the delta to 0, so we
- will only go through the loop once. */
+ /* We have to be able to keep the GUI alive here, so we break the
+ original timeout into steps of 1 second, running the "keep the
+ GUI alive" hook each time through the loop.
+
+ Also, timeout = 0 means to poll, so we just set the delta to 0,
+ so we will only go through the loop once. */
delta = (timeout == 0 ? 0 : 1);
while (1)
/* N.B. The UI may destroy our world (for instance by calling
remote_stop,) in which case we want to get out of here as
quickly as possible. It is not safe to touch scb, since
- someone else might have freed it. The ui_loop_hook signals that
- we should exit by returning 1. */
+ someone else might have freed it. The
+ deprecated_ui_loop_hook signals that we should exit by
+ returning 1. */
- if (ui_loop_hook)
- detach = ui_loop_hook (0);
+ if (deprecated_ui_loop_hook)
+ detach = deprecated_ui_loop_hook (0);
if (detach)
return SERIAL_TIMEOUT;
if (status < 0)
return status;
- /* NOTE: cagney/1999-09-17: See ser_unix_readchar() for reason
- why ASYNC reads are character by character. */
-
- scb->bufcnt = read (scb->fd, scb->buf,
- (SERIAL_IS_ASYNC_P (scb) ? 1 : BUFSIZ));
+ status = read (scb->fd, scb->buf, BUFSIZ);
- if (scb->bufcnt <= 0)
+ if (status <= 0)
{
- if (scb->bufcnt == 0)
+ if (status == 0)
{
/* Zero characters means timeout (it could also be EOF, but
we don't (yet at least) distinguish). */
return SERIAL_ERROR; /* Got an error from read */
}
+ scb->bufcnt = status;
scb->bufcnt--;
scb->bufp = scb->buf;
return *scb->bufp++;
}
}
+static int
+hardwire_readchar (struct serial *scb, int timeout)
+{
+ return generic_readchar (scb, timeout, do_hardwire_readchar);
+}
+
+
#ifndef B19200
#define B19200 EXTA
#endif
int i;
for (i = 0; baudtab[i].rate != -1; i++)
- if (rate == baudtab[i].rate)
- return baudtab[i].code;
-
+ {
+ /* test for perfect macth. */
+ if (rate == baudtab[i].rate)
+ return baudtab[i].code;
+ else
+ {
+ /* check if it is in between valid values. */
+ if (rate < baudtab[i].rate)
+ {
+ if (i)
+ {
+ warning (_("Invalid baud rate %d. Closest values are %d and %d."),
+ rate, baudtab[i - 1].rate, baudtab[i].rate);
+ }
+ else
+ {
+ warning (_("Invalid baud rate %d. Minimum value is %d."),
+ rate, baudtab[0].rate);
+ }
+ return -1;
+ }
+ }
+ }
+
+ /* The requested speed was too large. */
+ warning (_("Invalid baud rate %d. Maximum value is %d."),
+ rate, baudtab[i - 1].rate);
return -1;
}
static int
-hardwire_setbaudrate (serial_t scb, int rate)
+hardwire_setbaudrate (struct serial *scb, int rate)
{
struct hardwire_ttystate state;
+ int baud_code = rate_to_code (rate);
+
+ if (baud_code < 0)
+ {
+ /* The baud rate was not valid.
+ A warning has already been issued. */
+ errno = EINVAL;
+ return -1;
+ }
if (get_tty_state (scb, &state))
return -1;
#ifdef HAVE_TERMIOS
- cfsetospeed (&state.termios, rate_to_code (rate));
- cfsetispeed (&state.termios, rate_to_code (rate));
+ cfsetospeed (&state.termios, baud_code);
+ cfsetispeed (&state.termios, baud_code);
#endif
#ifdef HAVE_TERMIO
#endif
state.termio.c_cflag &= ~(CBAUD | CIBAUD);
- state.termio.c_cflag |= rate_to_code (rate);
+ state.termio.c_cflag |= baud_code;
#endif
#ifdef HAVE_SGTTY
- state.sgttyb.sg_ispeed = rate_to_code (rate);
- state.sgttyb.sg_ospeed = rate_to_code (rate);
+ state.sgttyb.sg_ispeed = baud_code;
+ state.sgttyb.sg_ospeed = baud_code;
#endif
return set_tty_state (scb, &state);
}
static int
-hardwire_setstopbits (scb, num)
- serial_t scb;
- int num;
+hardwire_setstopbits (struct serial *scb, int num)
{
struct hardwire_ttystate state;
int newbit;
return set_tty_state (scb, &state);
}
-/* FIXME: Don't replace this with the equivalent ser_unix*() until the
- old TERMIOS/SGTTY/... timer code has been flushed. cagney
- 1999-09-16. */
-
-static int
-hardwire_write (serial_t scb, const char *str, int len)
-{
- int cc;
-
- while (len > 0)
- {
- cc = write (scb->fd, str, len);
-
- if (cc < 0)
- return 1;
- len -= cc;
- str += cc;
- }
- return 0;
-}
-
-
static void
-hardwire_close (serial_t scb)
+hardwire_close (struct serial *scb)
{
if (scb->fd < 0)
return;
close (scb->fd);
scb->fd = -1;
}
-
\f
-/* Generic operations used by all UNIX/FD based serial interfaces. */
-
-serial_ttystate
-ser_unix_nop_get_tty_state (serial_t scb)
-{
- /* allocate a dummy */
- return (serial_ttystate) XMALLOC (int);
-}
-
-int
-ser_unix_nop_set_tty_state (serial_t scb, serial_ttystate ttystate)
-{
- return 0;
-}
-
-void
-ser_unix_nop_raw (serial_t scb)
-{
- return; /* Always in raw mode */
-}
-
-/* Wait for input on scb, with timeout seconds. Returns 0 on success,
- otherwise SERIAL_TIMEOUT or SERIAL_ERROR. */
-
-int
-ser_unix_wait_for (serial_t scb, int timeout)
-{
- int numfds;
- struct timeval tv;
- fd_set readfds, exceptfds;
-
- FD_ZERO (&readfds);
- FD_ZERO (&exceptfds);
-
- tv.tv_sec = timeout;
- tv.tv_usec = 0;
-
- FD_SET (scb->fd, &readfds);
- FD_SET (scb->fd, &exceptfds);
-
- while (1)
- {
- if (timeout >= 0)
- numfds = select (scb->fd + 1, &readfds, 0, &exceptfds, &tv);
- else
- numfds = select (scb->fd + 1, &readfds, 0, &exceptfds, 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;
- }
-}
-
-/* Read a character with user-specified timeout. TIMEOUT is number of seconds
- to wait, or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
- char if successful. Returns -2 if timeout expired, EOF if line dropped
- dead, or -3 for any other error (see errno in that case). */
-
-int
-ser_unix_readchar (serial_t scb, int timeout)
-{
- int status;
- int delta;
-
- if (scb->bufcnt-- > 0)
- return *scb->bufp++;
-
- /* We have to be able to keep the GUI alive here, so we break the original
- timeout into steps of 1 second, running the "keep the GUI alive" hook
- each time through the loop.
-
- Also, timeout = 0 means to poll, so we just set the delta to 0, so we
- will only go through the loop once. */
-
- delta = (timeout == 0 ? 0 : 1);
- while (1)
- {
-
- /* N.B. The UI may destroy our world (for instance by calling
- remote_stop,) in which case we want to get out of here as
- quickly as possible. It is not safe to touch scb, since
- someone else might have freed it. The ui_loop_hook signals that
- we should exit by returning 1. */
-
- if (ui_loop_hook)
- {
- if (ui_loop_hook (0))
- return SERIAL_TIMEOUT;
- }
-
- status = ser_unix_wait_for (scb, delta);
- timeout -= delta;
-
- /* If we got a character or an error back from wait_for, then we can
- break from the loop before the timeout is completed. */
-
- if (status != SERIAL_TIMEOUT)
- {
- break;
- }
-
- /* If we have exhausted the original timeout, then generate
- a SERIAL_TIMEOUT, and pass it out of the loop. */
-
- else if (timeout == 0)
- {
- status = SERIAL_TIMEOUT;
- break;
- }
- }
-
- if (status < 0)
- return status;
-
- while (1)
- {
- /* FIXME: cagney/1999-09-17: ASYNC: The ASYNC serial code needs
- to be modified so that it agressivly tries to drain its local
- input buffer. Until this is done, the read() below can only
- take in single characters. This is to ensure that
- unprocessed data doesn't end up sitting in the input fifo. */
- scb->bufcnt = read (scb->fd, scb->buf,
- (SERIAL_IS_ASYNC_P (scb) ? 1 : BUFSIZ));
- if (scb->bufcnt != -1 || errno != EINTR)
- break;
- }
-
- 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++;
-}
-
-int
-ser_unix_nop_noflush_set_tty_state (serial_t scb,
- serial_ttystate new_ttystate,
- serial_ttystate old_ttystate)
-{
- return 0;
-}
-
-void
-ser_unix_nop_print_tty_state (serial_t scb,
- serial_ttystate ttystate,
- struct gdb_file *stream)
-{
- /* Nothing to print. */
- return;
-}
-
-int
-ser_unix_nop_setbaudrate (serial_t scb, int rate)
-{
- return 0; /* Never fails! */
-}
-
-int
-ser_unix_nop_setstopbits (serial_t scb, int num)
-{
- return 0; /* Never fails! */
-}
-
-int
-ser_unix_write (serial_t scb, const char *str, int len)
-{
- int cc;
-
- while (len > 0)
- {
- cc = write (scb->fd, str, len);
-
- if (cc < 0)
- return 1;
- len -= cc;
- str += cc;
- }
- return 0;
-}
-
-int
-ser_unix_nop_flush_output (serial_t scb)
-{
- return 0;
-}
-
-int
-ser_unix_nop_flush_input (serial_t scb)
-{
- return 0;
-}
-
-int
-ser_unix_nop_send_break (serial_t scb)
-{
- return 0;
-}
-
-int
-ser_unix_nop_drain_output (serial_t scb)
-{
- return 0;
-}
-
-static void
-ser_unix_event (int error, int fd, gdb_client_data context)
-{
- serial_t scb = context;
- scb->async_handler (error, scb->async_context, fd);
-}
-
-void
-ser_unix_async (serial_t scb,
- int async_p)
-{
- if (async_p)
- {
- add_file_handler (scb->fd, ser_unix_event, scb);
- }
- else
- {
- delete_file_handler (scb->fd);
- }
-}
-
+\f
void
_initialize_ser_hardwire (void)
{
struct serial_ops *ops = XMALLOC (struct serial_ops);
- memset (ops, sizeof (struct serial_ops), 0);
+ memset (ops, 0, sizeof (struct serial_ops));
ops->name = "hardwire";
ops->next = 0;
ops->open = hardwire_open;
ops->close = hardwire_close;
- /* FIXME: Don't replace this with the equivalent ser_unix*() until
+ /* FIXME: Don't replace this with the equivalent ser_base*() until
the old TERMIOS/SGTTY/... timer code has been flushed. cagney
1999-09-16. */
ops->readchar = hardwire_readchar;
- /* FIXME: Don't replace this with the equivalent ser_unix*() until
- the old TERMIOS/SGTTY/... timer code has been flushed. cagney
- 1999-09-16. */
- ops->write = hardwire_write;
+ ops->write = ser_base_write;
ops->flush_output = hardwire_flush_output;
ops->flush_input = hardwire_flush_input;
ops->send_break = hardwire_send_break;
ops->setbaudrate = hardwire_setbaudrate;
ops->setstopbits = hardwire_setstopbits;
ops->drain_output = hardwire_drain_output;
- ops->async = ser_unix_async;
+ ops->async = ser_base_async;
+ ops->read_prim = ser_unix_read_prim;
+ ops->write_prim = ser_unix_write_prim;
serial_add_interface (ops);
+
+#ifdef HAVE_TERMIOS
+#ifdef CRTSCTS
+ add_setshow_boolean_cmd ("remoteflow", no_class,
+ &serial_hwflow, _("\
+Set use of hardware flow control for remote serial I/O."), _("\
+Show use of hardware flow control for remote serial I/O."), _("\
+Enable or disable hardware flow control (RTS/CTS) on the serial port\n\
+when debugging using remote targets."),
+ NULL,
+ show_serial_hwflow,
+ &setlist, &showlist);
+#endif
+#endif
+}
+
+int
+ser_unix_read_prim (struct serial *scb, size_t count)
+{
+ int status;
+
+ while (1)
+ {
+ status = read (scb->fd, scb->buf, count);
+ if (status != -1 || errno != EINTR)
+ break;
+ }
+ return status;
+}
+
+int
+ser_unix_write_prim (struct serial *scb, const void *buf, size_t len)
+{
+ /* ??? Historically, GDB has not retried calls to "write" that
+ result in EINTR. */
+ return write (scb->fd, buf, len);
}
projects / deliverable / binutils-gdb.git / blobdiff