static struct serial_ops *serial_ops_list = NULL;
+/* Pointer to list of scb's. */
+
+static struct serial *scb_base;
+
/* Non-NULL gives filename which contains a recording of the remote session,
suitable for playback by gdbserver. */
serial_ops_list = optable;
}
+/* Return the open serial device for FD, if found, or NULL if FD is
+ not already opened. */
+
+struct serial *
+serial_for_fd (int fd)
+{
+ struct serial *scb;
+
+ for (scb = scb_base; scb; scb = scb->next)
+ if (scb->fd == fd)
+ return scb;
+
+ return NULL;
+}
+
/* Open up a device or a network socket, depending upon the syntax of NAME. */
struct serial *
scb->bufcnt = 0;
scb->bufp = scb->buf;
scb->error_fd = -1;
+ scb->refcnt = 1;
/* `...->open (...)' would get expanded by the open(2) syscall macro. */
if ((*scb->ops->open) (scb, open_name))
}
scb->name = xstrdup (name);
+ scb->next = scb_base;
scb->debug_p = 0;
scb->async_state = 0;
scb->async_handler = NULL;
scb->async_context = NULL;
+ scb_base = scb;
if (serial_logfile != NULL)
{
scb->bufcnt = 0;
scb->bufp = scb->buf;
scb->error_fd = -1;
+ scb->refcnt = 1;
scb->name = NULL;
+ scb->next = scb_base;
scb->debug_p = 0;
scb->async_state = 0;
scb->async_handler = NULL;
scb->async_context = NULL;
+ scb_base = scb;
if ((ops->fdopen) != NULL)
(*ops->fdopen) (scb, fd);
if (scb->name)
xfree (scb->name);
- xfree (scb);
+ /* For serial_is_open. */
+ scb->bufp = NULL;
+
+ if (scb_base == scb)
+ scb_base = scb_base->next;
+ else
+ for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)
+ {
+ if (tmp_scb->next != scb)
+ continue;
+
+ tmp_scb->next = tmp_scb->next->next;
+ break;
+ }
+
+ serial_unref (scb);
}
void
do_serial_close (scb, 0);
}
+int
+serial_is_open (struct serial *scb)
+{
+ return scb->bufp != NULL;
+}
+
+void
+serial_ref (struct serial *scb)
+{
+ scb->refcnt++;
+}
+
+void
+serial_unref (struct serial *scb)
+{
+ --scb->refcnt;
+ if (scb->refcnt == 0)
+ xfree (scb);
+}
+
int
serial_readchar (struct serial *scb, int timeout)
{