* lib/ld-lib.exp (check_gc_sections_available): Return 0 for

[deliverable/binutils-gdb.git] / gdb / ser-unix.c

diff --git a/gdb/ser-unix.c b/gdb/ser-unix.c
index 4a40c36662736e9d2fb5bb0bb7cc3e017e634b2f..07abf2b62094a41e9d5348df4a10759b7d8919ea 100644 (file)
--- a/gdb/ser-unix.c
+++ b/gdb/ser-unix.c
@@ -1,13 +1,13 @@
 /* Serial interface for local (hardwired) serial ports on Un*x like systems
 
 /* Serial interface for local (hardwired) serial ports on Un*x like systems
 

-   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-   2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2003,
+   2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.

 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or

    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -16,9 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    GNU General Public License for more details.
 
    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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #include "defs.h"
 #include "serial.h"
 
 #include "defs.h"
 #include "serial.h"


@@ -31,7 +29,9 @@
 #include <sys/socket.h>
 #include <sys/time.h>
 
 #include <sys/socket.h>
 #include <sys/time.h>
 

+#include "gdb_select.h"

 #include "gdb_string.h"
 #include "gdb_string.h"

+#include "gdbcmd.h"

 
 #ifdef HAVE_TERMIOS
 
 
 #ifdef HAVE_TERMIOS
 


@@ -39,6 +39,18 @@ struct hardwire_ttystate
   {
     struct termios 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 /* termios */
 
 #ifdef HAVE_TERMIO


@@ -365,7 +377,7 @@ hardwire_send_break (struct serial *scb)
        the full length of time.  I think that is OK.  */
     timeout.tv_sec = 0;
     timeout.tv_usec = 250000;
        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;
   }
     status = ioctl (scb->fd, TIOCCBRK, 0);
     return status;
   }


@@ -386,6 +398,19 @@ hardwire_raw (struct serial *scb)
   state.termios.c_lflag = 0;
   state.termios.c_cflag &= ~(CSIZE | PARENB);
   state.termios.c_cflag |= CLOCAL | CS8;
   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
   state.termios.c_cc[VMIN] = 0;
   state.termios.c_cc[VTIME] = 0;
 #endif


@@ -448,9 +473,9 @@ wait_for (struct serial *scb, int timeout)
       FD_SET (scb->fd, &readfds);
 
       if (timeout >= 0)
       FD_SET (scb->fd, &readfds);
 
       if (timeout >= 0)

-       numfds = select (scb->fd + 1, &readfds, 0, 0, &tv);
+       numfds = gdb_select (scb->fd + 1, &readfds, 0, 0, &tv);

       else
       else

-       numfds = select (scb->fd + 1, &readfds, 0, 0, 0);
+       numfds = gdb_select (scb->fd + 1, &readfds, 0, 0, 0);

 
       if (numfds <= 0)
        if (numfds == 0)
 
       if (numfds <= 0)
        if (numfds == 0)


@@ -891,6 +916,20 @@ _initialize_ser_hardwire (void)
   ops->read_prim = ser_unix_read_prim;
   ops->write_prim = ser_unix_write_prim;
   serial_add_interface (ops);
   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
 }
 
 int