2010-05-16 Michael Snyder <msnyder@vmware.com>

[deliverable/binutils-gdb.git] / gdb / serial.c

diff --git a/gdb/serial.c b/gdb/serial.c
index e5cf1b9d50320941ef3789bc832c9407f9dd7e1c..75a08781d20ba436d386953412853e9039853797 100644 (file)
--- a/gdb/serial.c
+++ b/gdb/serial.c
@@ -1,13 +1,14 @@
 /* Generic serial interface routines
 
-   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-   2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+   2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   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
-   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,
@@ -16,9 +17,7 @@
    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 <ctype.h>
@@ -184,15 +183,21 @@ serial_open (const char *name)
 
   if (strcmp (name, "pc") == 0)
     ops = serial_interface_lookup ("pc");
-  else if (strchr (name, ':'))
-    ops = serial_interface_lookup ("tcp");
   else if (strncmp (name, "lpt", 3) == 0)
     ops = serial_interface_lookup ("parallel");
   else if (strncmp (name, "|", 1) == 0)
     {
       ops = serial_interface_lookup ("pipe");
-      open_name = name + 1; /* discard ``|'' */
+      /* Discard ``|'' and any space before the command itself.  */
+      ++open_name;
+      while (isspace (*open_name))
+       ++open_name;
     }
+  /* Check for a colon, suggesting an IP address/port pair.
+     Do this *after* checking for all the interesting prefixes.  We
+     don't want to constrain the syntax of what can follow them.  */
+  else if (strchr (name, ':'))
+    ops = serial_interface_lookup ("tcp");
   else
     ops = serial_interface_lookup ("hardwire");
 
@@ -205,8 +210,10 @@ serial_open (const char *name)
 
   scb->bufcnt = 0;
   scb->bufp = scb->buf;
+  scb->error_fd = -1;
 
-  if (scb->ops->open (scb, open_name))
+  /* `...->open (...)' would get expanded by an the open(2) syscall macro.  */
+  if ((*scb->ops->open) (scb, open_name))
     {
       xfree (scb);
       return NULL;
@@ -233,6 +240,21 @@ serial_open (const char *name)
   return scb;
 }
 
+/* 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;
+}
+
 struct serial *
 serial_fdopen (const int fd)
 {
@@ -246,12 +268,14 @@ serial_fdopen (const int fd)
        return scb;
       }
 
-  ops = serial_interface_lookup ("hardwire");
+  ops = serial_interface_lookup ("terminal");
+  if (!ops)
+    ops = serial_interface_lookup ("hardwire");
 
   if (!ops)
     return NULL;
 
-  scb = XMALLOC (struct serial);
+  scb = XCALLOC (1, struct serial);
 
   scb->ops = ops;
 
@@ -383,6 +407,18 @@ serial_write (struct serial *scb, const char *str, int len)
          in case we are getting ready to dump core or something. */
       gdb_flush (serial_logfp);
     }
+  if (serial_debug_p (scb))
+    {
+      int count;
+
+      for (count = 0; count < len; count++)
+       {
+         fprintf_unfiltered (gdb_stdlog, "[");
+         serial_logchar (gdb_stdlog, 'w', str[count] & 0xff, 0);
+         fprintf_unfiltered (gdb_stdlog, "]");
+       }
+      gdb_flush (gdb_stdlog);
+    }
 
   return (scb->ops->write (scb, str, len));
 }
@@ -491,12 +527,13 @@ serial_async (struct serial *scb,
              serial_event_ftype *handler,
              void *context)
 {
-  /* Only change mode if there is a need. */
-  if ((scb->async_handler == NULL)
-      != (handler == NULL))
-    scb->ops->async (scb, handler != NULL);
+  int changed = ((scb->async_handler == NULL) != (handler == NULL));
+
   scb->async_handler = handler;
   scb->async_context = context;
+  /* Only change mode if there is a need.  */
+  if (changed)
+    scb->ops->async (scb, handler != NULL);
 }
 
 int
@@ -524,6 +561,26 @@ serial_debug_p (struct serial *scb)
   return scb->debug_p || global_serial_debug_p;
 }
 
+#ifdef USE_WIN32API
+void
+serial_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except)
+{
+  if (scb->ops->wait_handle)
+    scb->ops->wait_handle (scb, read, except);
+  else
+    {
+      *read = (HANDLE) _get_osfhandle (scb->fd);
+      *except = NULL;
+    }
+}
+
+void
+serial_done_wait_handle (struct serial *scb)
+{
+  if (scb->ops->done_wait_handle)
+    scb->ops->done_wait_handle (scb);
+}
+#endif
 
 #if 0
 /* The connect command is #if 0 because I hadn't thought of an elegant