2011-05-26 Pedro Alves <pedro@codesourcery.com>

gdb/
	* inferior.h (enum exec_direction_kind): Delete EXEC_ERROR.
	* infrun.c (show_exec_direction_func): Don't handle EXEC_ERROR.
	Internal error on invalid values.
	* reverse.c: Don't handle EXEC_ERROR.
	* mi/mi-main.c: Don't handle EXEC_ERROR.

gdb/ChangeLog

@@ -1,3 +1,11 @@
+2011-05-26  Pedro Alves  <pedro@codesourcery.com>
+
+	* inferior.h (enum exec_direction_kind): Delete EXEC_ERROR.
+	* infrun.c (show_exec_direction_func): Don't handle EXEC_ERROR.
+	Internal error on invalid values.
+	* reverse.c: Don't handle EXEC_ERROR.
+	* mi/mi-main.c: Don't handle EXEC_ERROR.
+
 2011-05-26  Pedro Alves  <pedro@codesourcery.com>
 
 	* record.c: Include event-loop.h, inf-loop.h.

gdb/inferior.h

@@ -352,8 +352,7 @@ enum stop_kind
 enum exec_direction_kind
   {
     EXEC_FORWARD,
-    EXEC_REVERSE,
-    EXEC_ERROR
+    EXEC_REVERSE
   };
 
 /* The current execution direction.  This should only be set to enum

gdb/infrun.c

@@ -6920,12 +6920,10 @@ show_exec_direction_func (struct ui_file *out, int from_tty,
   case EXEC_REVERSE:
     fprintf_filtered (out, _("Reverse.\n"));
     break;
-  case EXEC_ERROR:
   default:
-    fprintf_filtered (out, _("Forward (target `%s' does not "
-			     "support exec-direction).\n"),
-		      target_shortname);
-    break;
+    internal_error (__FILE__, __LINE__,
+		    _("bogus execution_direction value: %d"),
+		    (int) execution_direction);
   }
 }
 

gdb/mi/mi-main.c

@@ -285,9 +285,6 @@ exec_reverse_continue (char **argv, int argc)
   enum exec_direction_kind dir = execution_direction;
   struct cleanup *old_chain;
 
-  if (dir == EXEC_ERROR)
-    error (_("Target %s does not support this command."), target_shortname);
-
   if (dir == EXEC_REVERSE)
     error (_("Already in reverse mode."));
 

gdb/reverse.c

@@ -50,9 +50,6 @@ exec_reverse_once (char *cmd, char *args, int from_tty)
   enum exec_direction_kind dir = execution_direction;
   struct cleanup *old_chain;
 
-  if (dir == EXEC_ERROR)
-    error (_("Target %s does not support this command."), target_shortname);
-
   if (dir == EXEC_REVERSE)
     error (_("Already in reverse mode.  Use '%s' or 'set exec-dir forward'."),
 	   cmd);