/* Serial interface for local (hardwired) serial ports on Un*x like systems
- Copyright 1992-1994, 1998-2000 Free Software Foundation, Inc.
+ Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
This file is part of GDB.
#include <fcntl.h>
#include <sys/types.h>
#include "terminal.h"
-#include "gdb_wait.h"
#include <sys/socket.h>
#include <sys/time.h>
};
#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 do_hardwire_readchar (serial_t scb, int timeout);
-static int generic_readchar (serial_t scb, int timeout, int (*do_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 generic_readchar (struct serial *scb, int timeout,
+ int (*do_readchar) (struct serial *scb,
+ int timeout));
static int rate_to_code (int rate);
-static int hardwire_setbaudrate (serial_t scb, int rate);
-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 ui_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 do_unix_readchar (serial_t scb, int timeout);
+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);
+
+static int do_unix_readchar (struct serial *scb, int timeout);
static timer_handler_func push_event;
static handler_func fd_event;
-static void reschedule (serial_t scb);
+static void reschedule (struct serial *scb);
void _initialize_ser_hardwire (void);
/* 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 ui_file *stream)
{
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)
{
ser_unix_flush_input (scb);
}
static int
-hardwire_send_break (serial_t scb)
+hardwire_send_break (struct serial *scb)
{
#ifdef HAVE_TERMIOS
return tcsendbreak (scb->fd, 0);
}
static void
-hardwire_raw (serial_t scb)
+hardwire_raw (struct serial *scb)
{
struct hardwire_ttystate state;
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 = select (scb->fd + 1, &readfds, 0, 0, &tv);
+ else
+ numfds = 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);
+ return SERIAL_ERROR; /* Got an error from select or poll */
- 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;
- }
- }
+ return 0;
+ }
#endif /* HAVE_SGTTY */
#if defined HAVE_TERMIO || defined HAVE_TERMIOS
that. */
static int
-do_hardwire_readchar (serial_t scb, int timeout)
+do_hardwire_readchar (struct serial *scb, int timeout)
{
int status, delta;
int detach = 0;
}
static int
-hardwire_readchar (serial_t scb, int timeout)
+hardwire_readchar (struct serial *scb, int timeout)
{
return generic_readchar (scb, timeout, do_hardwire_readchar);
}
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;
}
static void
-hardwire_close (serial_t scb)
+hardwire_close (struct serial *scb)
{
if (scb->fd < 0)
return;
/* Generic operations used by all UNIX/FD based serial interfaces. */
serial_ttystate
-ser_unix_nop_get_tty_state (serial_t scb)
+ser_unix_nop_get_tty_state (struct serial *scb)
{
/* allocate a dummy */
return (serial_ttystate) XMALLOC (int);
}
int
-ser_unix_nop_set_tty_state (serial_t scb, serial_ttystate ttystate)
+ser_unix_nop_set_tty_state (struct serial *scb, serial_ttystate ttystate)
{
return 0;
}
void
-ser_unix_nop_raw (serial_t scb)
+ser_unix_nop_raw (struct serial *scb)
{
return; /* Always in raw mode */
}
otherwise SERIAL_TIMEOUT or SERIAL_ERROR. */
int
-ser_unix_wait_for (serial_t scb, int timeout)
+ser_unix_wait_for (struct serial *scb, int timeout)
{
- int numfds;
- struct timeval tv;
- fd_set readfds, exceptfds;
+ while (1)
+ {
+ int numfds;
+ struct timeval tv;
+ fd_set readfds, exceptfds;
- FD_ZERO (&readfds);
- FD_ZERO (&exceptfds);
+ /* 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_SET (scb->fd, &exceptfds);
+ FD_ZERO (&readfds);
+ FD_ZERO (&exceptfds);
+ 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
dead, or -3 for any other error (see errno in that case). */
static int
-do_unix_readchar (serial_t scb, int timeout)
+do_unix_readchar (struct serial *scb, int timeout)
{
int status;
int delta;
}
status = ser_unix_wait_for (scb, delta);
- timeout -= delta;
+ if (timeout > 0)
+ 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. */
will be called. */
static int
-generic_readchar (serial_t scb, int timeout,
- int (do_readchar) (serial_t scb, int timeout))
+generic_readchar (struct serial *scb, int timeout,
+ int (do_readchar) (struct serial *scb, int timeout))
{
int ch;
if (scb->bufcnt > 0)
}
int
-ser_unix_readchar (serial_t scb, int timeout)
+ser_unix_readchar (struct serial *scb, int timeout)
{
return generic_readchar (scb, timeout, do_unix_readchar);
}
int
-ser_unix_nop_noflush_set_tty_state (serial_t scb,
+ser_unix_nop_noflush_set_tty_state (struct serial *scb,
serial_ttystate new_ttystate,
serial_ttystate old_ttystate)
{
}
void
-ser_unix_nop_print_tty_state (serial_t scb,
+ser_unix_nop_print_tty_state (struct serial *scb,
serial_ttystate ttystate,
struct ui_file *stream)
{
}
int
-ser_unix_nop_setbaudrate (serial_t scb, int rate)
+ser_unix_nop_setbaudrate (struct serial *scb, int rate)
{
return 0; /* Never fails! */
}
int
-ser_unix_nop_setstopbits (serial_t scb, int num)
+ser_unix_nop_setstopbits (struct serial *scb, int num)
{
return 0; /* Never fails! */
}
int
-ser_unix_write (serial_t scb, const char *str, int len)
+ser_unix_write (struct serial *scb, const char *str, int len)
{
int cc;
}
int
-ser_unix_nop_flush_output (serial_t scb)
+ser_unix_nop_flush_output (struct serial *scb)
{
return 0;
}
int
-ser_unix_flush_input (serial_t scb)
+ser_unix_flush_input (struct serial *scb)
{
if (scb->bufcnt >= 0)
{
}
int
-ser_unix_nop_send_break (serial_t scb)
+ser_unix_nop_send_break (struct serial *scb)
{
return 0;
}
int
-ser_unix_nop_drain_output (serial_t scb)
+ser_unix_nop_drain_output (struct serial *scb)
{
return 0;
}
scheduled task is only changed when needed. */
static void
-reschedule (serial_t scb)
+reschedule (struct serial *scb)
{
- if (SERIAL_IS_ASYNC_P (scb))
+ if (serial_is_async_p (scb))
{
int next_state;
switch (scb->async_state)
next_state = scb->async_state;
break;
}
- if (SERIAL_DEBUG_P (scb))
+ if (serial_debug_p (scb))
{
switch (next_state)
{
static void
fd_event (int error, void *context)
{
- serial_t scb = context;
+ struct serial *scb = context;
if (error != 0)
{
scb->bufcnt = SERIAL_ERROR;
static void
push_event (void *context)
{
- serial_t scb = context;
+ struct serial *scb = context;
scb->async_state = NOTHING_SCHEDULED; /* Timers are one-off */
scb->async_handler (scb, scb->async_context);
/* re-schedule */
/* Put the SERIAL device into/out-of ASYNC mode. */
void
-ser_unix_async (serial_t scb,
+ser_unix_async (struct serial *scb,
int async_p)
{
if (async_p)
{
/* Force a re-schedule. */
scb->async_state = NOTHING_SCHEDULED;
- if (SERIAL_DEBUG_P (scb))
+ if (serial_debug_p (scb))
fprintf_unfiltered (gdb_stdlog, "[fd%d->asynchronous]\n",
scb->fd);
reschedule (scb);
}
else
{
- if (SERIAL_DEBUG_P (scb))
+ if (serial_debug_p (scb))
fprintf_unfiltered (gdb_stdlog, "[fd%d->synchronous]\n",
scb->fd);
- /* De-schedule what ever tasks are currently scheduled. */
+ /* De-schedule whatever tasks are currently scheduled. */
switch (scb->async_state)
{
case FD_SCHEDULED:
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