/* Serial interface for raw TCP connections on Un*x like systems
- Copyright 1992, 1993, 1998 Free Software Foundation, Inc.
+ Copyright 1992, 1993, 1998-1999 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "serial.h"
+#include "ser-unix.h"
+
#include <sys/types.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
-
#ifndef __CYGWIN32__
#include <netinet/tcp.h>
#endif
#include "signals.h"
#include "gdb_string.h"
-extern int (*ui_loop_hook) PARAMS ((int));
-
-struct tcp_ttystate
- {
- int bogus;
- };
-
-static int tcp_open PARAMS ((serial_t scb, const char *name));
-static void tcp_raw PARAMS ((serial_t scb));
-static int wait_for PARAMS ((serial_t scb, int timeout));
-static int tcp_readchar PARAMS ((serial_t scb, int timeout));
-static int tcp_setbaudrate PARAMS ((serial_t scb, int rate));
-static int tcp_setstopbits PARAMS ((serial_t scb, int num));
-static int tcp_write PARAMS ((serial_t scb, const char *str, int len));
-/* FIXME: static void tcp_restore PARAMS ((serial_t scb)); */
-static void tcp_close PARAMS ((serial_t scb));
-static serial_ttystate tcp_get_tty_state PARAMS ((serial_t scb));
-static int tcp_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
-static int tcp_return_0 PARAMS ((serial_t));
-static int tcp_noflush_set_tty_state PARAMS ((serial_t, serial_ttystate,
- serial_ttystate));
-static void tcp_print_tty_state PARAMS ((serial_t, serial_ttystate));
-
-void _initialize_ser_tcp PARAMS ((void));
+static int tcp_open (serial_t scb, const char *name);
+static void tcp_close (serial_t scb);
+
+void _initialize_ser_tcp (void);
/* Open up a raw tcp socket */
static int
-tcp_open (scb, name)
- serial_t scb;
- const char *name;
+tcp_open (serial_t scb, const char *name)
{
char *port_str;
int port;
return 0;
}
-static serial_ttystate
-tcp_get_tty_state (scb)
- serial_t scb;
-{
- struct tcp_ttystate *state;
-
- state = (struct tcp_ttystate *) xmalloc (sizeof *state);
-
- return (serial_ttystate) state;
-}
-
-static int
-tcp_set_tty_state (scb, ttystate)
- serial_t scb;
- serial_ttystate ttystate;
-{
- struct tcp_ttystate *state;
-
- state = (struct tcp_ttystate *) ttystate;
-
- return 0;
-}
-
-static int
-tcp_return_0 (scb)
- serial_t scb;
-{
- return 0;
-}
-
static void
-tcp_raw (scb)
- 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.
-
- For termio{s}, we actually just setup VTIME if necessary, and let the
- timeout occur in the read() in tcp_read().
- */
-
-static int
-wait_for (scb, timeout)
- 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). */
-
-static int
-tcp_readchar (scb, timeout)
- 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 = 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)
- {
- scb->bufcnt = read (scb->fd, scb->buf, 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++;
-}
-
-static int
-tcp_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
- serial_t scb;
- serial_ttystate new_ttystate;
- serial_ttystate old_ttystate;
-{
- return 0;
-}
-
-static void
-tcp_print_tty_state (scb, ttystate)
- serial_t scb;
- serial_ttystate ttystate;
-{
- /* Nothing to print. */
- return;
-}
-
-static int
-tcp_setbaudrate (scb, rate)
- serial_t scb;
- int rate;
-{
- return 0; /* Never fails! */
-}
-
-static int
-tcp_setstopbits (scb, num)
- serial_t scb;
- int num;
-{
- return 0; /* Never fails! */
-}
-
-static int
-tcp_write (scb, str, len)
- 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
-tcp_close (scb)
- serial_t scb;
+tcp_close (serial_t scb)
{
if (scb->fd < 0)
return;
scb->fd = -1;
}
-static struct serial_ops tcp_ops =
-{
- "tcp",
- 0,
- tcp_open,
- tcp_close,
- tcp_readchar,
- tcp_write,
- tcp_return_0, /* flush output */
- tcp_return_0, /* flush input */
- tcp_return_0, /* send break */
- tcp_raw,
- tcp_get_tty_state,
- tcp_set_tty_state,
- tcp_print_tty_state,
- tcp_noflush_set_tty_state,
- tcp_setbaudrate,
- tcp_setstopbits,
- tcp_return_0, /* wait for output to drain */
-};
-
void
-_initialize_ser_tcp ()
+_initialize_ser_tcp (void)
{
- serial_add_interface (&tcp_ops);
+ struct serial_ops *ops = XMALLOC (struct serial_ops);
+ memset (ops, sizeof (struct serial_ops), 0);
+ ops->name = "tcp";
+ ops->next = 0;
+ ops->open = tcp_open;
+ ops->close = tcp_close;
+ ops->readchar = ser_unix_readchar;
+ ops->write = ser_unix_write;
+ ops->flush_output = ser_unix_nop_flush_output;
+ ops->flush_input = ser_unix_nop_flush_input;
+ ops->send_break = ser_unix_nop_send_break;
+ ops->go_raw = ser_unix_nop_raw;
+ ops->get_tty_state = ser_unix_nop_get_tty_state;
+ ops->set_tty_state = ser_unix_nop_set_tty_state;
+ ops->print_tty_state = ser_unix_nop_print_tty_state;
+ ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
+ ops->setbaudrate = ser_unix_nop_setbaudrate;
+ ops->setstopbits = ser_unix_nop_setstopbits;
+ ops->drain_output = ser_unix_nop_drain_output;
+ ops->async = ser_unix_async;
+ serial_add_interface (ops);
}
projects / deliverable / binutils-gdb.git / blobdiff