#ifdef HAVE_TERMIOS
#include <termios.h>
#include <unistd.h>
+
+struct hardwire_ttystate
+{
+ struct termios termios;
+};
#endif
+
#ifdef HAVE_TERMIO
-#include <sys/termio.h>
+#include <termio.h>
+
+struct hardwire_ttystate
+{
+ struct termio termio;
+};
#endif
+
#ifdef HAVE_SGTTY
#include <sgtty.h>
+
+struct hardwire_ttystate
+{
+ struct sgttyb sgttyb;
+};
#endif
+static int hardwire_open PARAMS ((serial_t scb, const char *name));
+static void hardwire_raw PARAMS ((serial_t scb));
+static int wait_for PARAMS ((serial_t scb, int timeout));
+static int hardwire_readchar PARAMS ((serial_t scb, int timeout));
+static int rate_to_code PARAMS ((int rate));
+static int hardwire_setbaudrate PARAMS ((serial_t scb, int rate));
+static int hardwire_write PARAMS ((serial_t scb, const char *str, int len));
+static void hardwire_restore PARAMS ((serial_t scb));
+static void hardwire_close PARAMS ((serial_t scb));
+static int get_tty_state PARAMS ((serial_t scb, struct hardwire_ttystate *state));
+static int set_tty_state PARAMS ((serial_t scb, struct hardwire_ttystate *state));
+static serial_ttystate hardwire_get_tty_state PARAMS ((serial_t scb));
+static int hardwire_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
+
/* Open up a real live device for serial I/O */
static int
{
scb->fd = open (name, O_RDWR);
if (scb->fd < 0)
- return errno;
+ return -1;
return 0;
}
-static void
-hardwire_raw(scb)
+static int
+get_tty_state(scb, state)
serial_t scb;
+ struct hardwire_ttystate *state;
{
#ifdef HAVE_TERMIOS
- struct termios termios;
+ return tcgetattr(scb->fd, &state->termios);
+#endif
- if (tcgetattr(scb->fd, &termios))
- {
- fprintf(stderr, "tcgetattr failed: %s\n", safe_strerror(errno));
- }
+#ifdef HAVE_TERMIO
+ return ioctl (scb->fd, TCGETA, &state->termio);
+#endif
- termios.c_iflag = 0;
- termios.c_oflag = 0;
- termios.c_lflag = 0;
- termios.c_cflag &= ~(CSIZE|PARENB);
- termios.c_cflag |= CS8;
- termios.c_cc[VMIN] = 0;
- termios.c_cc[VTIME] = 0;
+#ifdef HAVE_SGTTY
+ return ioctl (scb->fd, TIOCGETP, &state->sgttyb);
+#endif
+}
- if (tcsetattr(scb->fd, TCSANOW, &termios))
- {
- fprintf(stderr, "tcsetattr failed: %s\n", safe_strerror(errno));
- }
+static int
+set_tty_state(scb, state)
+ serial_t scb;
+ struct hardwire_ttystate *state;
+{
+ int err;
+
+#ifdef HAVE_TERMIOS
+ return tcsetattr(scb->fd, TCSANOW, &state->termios);
#endif
#ifdef HAVE_TERMIO
- struct termio termio;
+ return ioctl (scb->fd, TCSETA, &state->termio);
+#endif
- if (ioctl (scb->fd, TCGETA, &termio))
- {
- fprintf(stderr, "TCGETA failed: %s\n", safe_strerror(errno));
- }
+#ifdef HAVE_SGTTY
+ return ioctl (scb->fd, TIOCSETP, &state->sgttyb);
+#endif
+}
- termio.c_iflag = 0;
- termio.c_oflag = 0;
- termio.c_lflag = 0;
- termio.c_cflag &= ~(CSIZE|PARENB);
- termio.c_cflag |= CS8;
- termio.c_cc[VMIN] = 0;
- termio.c_cc[VTIME] = 0;
+static serial_ttystate
+hardwire_get_tty_state(scb)
+ serial_t scb;
+{
+ struct hardwire_ttystate *state;
- if (ioctl (scb->fd, TCSETA, &termio))
- {
- fprintf(stderr, "TCSETA failed: %s\n", safe_strerror(errno));
- }
-#endif
+ state = (struct hardwire_ttystate *)xmalloc(sizeof *state);
-#ifdef HAVE_SGTTY
- struct sgttyb sgttyb;
+ if (get_tty_state(scb, state))
+ return NULL;
+
+ return (serial_ttystate)state;
+}
+
+static int
+hardwire_set_tty_state(scb, ttystate)
+ serial_t scb;
+ serial_ttystate ttystate;
+{
+ struct hardwire_ttystate *state;
+
+ state = (struct hardwire_ttystate *)ttystate;
+
+ return set_tty_state(scb, state);
+}
- if (ioctl (scb->fd, TIOCGETP, &sgttyb))
- fprintf(stderr, "TIOCGETP failed: %s\n", safe_strerror(errno));
+static void
+hardwire_raw(scb)
+ serial_t scb;
+{
+ struct hardwire_ttystate state;
- sgttyb.sg_flags |= RAW | ANYP;
- sgttyb.sg_flags &= ~(CBREAK | ECHO);
+ if (get_tty_state(scb, &state))
+ fprintf(stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
- if (ioctl (scb->fd, TIOCSETP, &sgttyb))
- fprintf(stderr, "TIOCSETP 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_cc[VMIN] = 0;
+ state.termios.c_cc[VTIME] = 0;
+#endif
+
+#ifdef HAVE_TERMIO
+ state.termio.c_iflag = 0;
+ state.termio.c_oflag = 0;
+ state.termio.c_lflag = 0;
+ state.termio.c_cflag &= ~(CSIZE|PARENB);
+ state.termio.c_cflag |= CS8;
+ state.termio.c_cc[VMIN] = 0;
+ state.termio.c_cc[VTIME] = 0;
#endif
+
+#ifdef HAVE_SGTTY
+ state.sgttyb.sg_flags |= RAW | ANYP;
+ state.sgttyb.sg_flags &= ~(CBREAK | ECHO);
+#endif
+
+ scb->current_timeout = 0;
+
+ if (set_tty_state (scb, &state))
+ fprintf(stderr, "set_tty_state failed: %s\n", safe_strerror(errno));
}
-/* 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). */
+/* Wait for input on scb, with timeout seconds. Returns 0 on success,
+ otherwise SERIAL_TIMEOUT or SERIAL_ERROR.
+
+ For termio{s}, we actually just setup VTIME if necessary, and let the
+ timeout occur in the read() in hardwire_read().
+ */
static int
-hardwire_readchar(scb, timeout)
+wait_for(scb, timeout)
serial_t scb;
int timeout;
{
int numfds;
+
+#ifdef HAVE_SGTTY
struct timeval tv;
fd_set readfds;
- if (scb->bufcnt-- > 0)
- return *scb->bufp++;
-
FD_ZERO (&readfds);
tv.tv_sec = timeout;
if (numfds <= 0)
if (numfds == 0)
- return -2; /* Timeout */
+ return SERIAL_TIMEOUT;
else
- return -3; /* Got an error from select */
+ 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;
+
+ {
+ struct hardwire_ttystate state;
+
+ if (get_tty_state(scb, &state))
+ fprintf(stderr, "get_tty_state failed: %s\n", safe_strerror(errno));
+
+#ifdef HAVE_TERMIOS
+ state.termios.c_cc[VTIME] = timeout * 10;
+#endif
+
+#ifdef HAVE_TERMIO
+ state.termio.c_cc[VTIME] = timeout * 10;
+#endif
+
+ scb->current_timeout = timeout;
+
+ if (set_tty_state (scb, &state))
+ fprintf(stderr, "set_tty_state failed: %s\n", safe_strerror(errno));
+
+ return 0;
+ }
+#endif /* HAVE_TERMIO || HAVE_TERMIOS */
+}
+
+/* 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). */
+
+static int
+hardwire_readchar(scb, timeout)
+ serial_t scb;
+ int timeout;
+{
+ int status;
+
+ 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 EOF; /* 0 chars means end of file */
+ return SERIAL_TIMEOUT; /* 0 chars means timeout [may need to
+ distinguish between EOF & timeouts
+ someday] */
else
- return -3; /* Got an error from read */
+ return SERIAL_ERROR; /* Got an error from read */
scb->bufcnt--;
scb->bufp = scb->buf;
serial_t scb;
int rate;
{
-#ifdef HAVE_TERMIOS
- struct termios termios;
-
- if (tcgetattr (scb->fd, &termios))
- error("hardwire_setbaudrate: tcgetattr failed: %s\n", safe_strerror(errno));
+ struct hardwire_ttystate state;
- cfsetospeed (&termios, rate_to_code (rate));
- cfsetispeed (&termios, rate_to_code (rate));
+ if (get_tty_state(scb, &state))
+ return -1;
- if (tcsetattr (scb->fd, TCSANOW, &termios))
- error ("hardwire_setbaudrate: tcsetattr failed: %s\n", safe_strerror(errno));
-
- return 1;
+#ifdef HAVE_TERMIOS
+ cfsetospeed (&state.termios, rate_to_code (rate));
+ cfsetispeed (&state.termios, rate_to_code (rate));
#endif
#ifdef HAVE_TERMIO
- struct termio termio;
-
- if (ioctl (scb->fd, TCGETA, &termio))
- {
- fprintf(stderr, "TCGETA failed: %s\n", safe_strerror(errno));
- }
-
#ifndef CIBAUD
#define CIBAUD CBAUD
#endif
- termio.c_cflag &= ~(CBAUD | CIBAUD);
- termio.c_cflag |= rate_to_code (rate);
-
- if (ioctl (scb->fd, TCSETA, &termio))
- {
- fprintf(stderr, "TCSETA failed: %s\n", safe_strerror(errno));
- }
+ state.termio.c_cflag &= ~(CBAUD | CIBAUD);
+ state.termio.c_cflag |= rate_to_code (rate);
#endif
#ifdef HAVE_SGTTY
- struct sgttyb sgttyb;
-
- if (ioctl (scb->fd, TIOCGETP, &sgttyb))
- fprintf (stderr, "TIOCGETP failed: %s\n", safe_strerror (errno));
-
- sgttyb.sg_ispeed = rate_to_code (rate);
- sgttyb.sg_ospeed = rate_to_code (rate);
-
- if (ioctl (scb->fd, TIOCSETP, &sgttyb))
- fprintf (stderr, "TIOCSETP failed: %s\n", safe_strerror (errno));
+ state.sgttyb.sg_ispeed = rate_to_code (rate);
+ state.sgttyb.sg_ospeed = rate_to_code (rate);
#endif
+
+ return set_tty_state (scb, &state);
}
static int
return 0;
}
-static void
-hardwire_restore(scb)
- serial_t scb;
-{
-}
-
static void
hardwire_close(scb)
serial_t scb;
if (scb->fd < 0)
return;
- SERIAL_RESTORE(scb);
-
close(scb->fd);
scb->fd = -1;
}
hardwire_readchar,
hardwire_write,
hardwire_raw,
- hardwire_restore,
- hardwire_setbaudrate
+ hardwire_get_tty_state,
+ hardwire_set_tty_state,
+ hardwire_setbaudrate,
};
+void
_initialize_ser_hardwire ()
{
serial_add_interface (&hardwire_ops);
projects / deliverable / binutils-gdb.git / blobdiff