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

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

diff --git a/gdb/target.c b/gdb/target.c
index ed2da34744cc534c74afede90930ca9a0dfb7986..0b7e61e04c80416993b96cdb95716d94f097a35d 100644 (file)
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -544,6 +544,18 @@ default_get_ada_task_ptid (long lwp, long tid)
   return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid);
 }
 
+static enum exec_direction_kind
+default_execution_direction (void)
+{
+  if (!target_can_execute_reverse)
+    return EXEC_FORWARD;
+  else if (!target_can_async_p ())
+    return EXEC_FORWARD;
+  else
+    gdb_assert_not_reached ("\
+to_execution_direction must be implemented for reverse async");
+}
+
 /* Go through the target stack from top to bottom, copying over zero
    entries in current_target, then filling in still empty entries.  In
    effect, we are doing class inheritance through the pushed target
@@ -654,6 +666,7 @@ update_current_target (void)
       INHERIT (to_goto_bookmark, t);
       /* Do not inherit to_get_thread_local_address.  */
       INHERIT (to_can_execute_reverse, t);
+      INHERIT (to_execution_direction, t);
       INHERIT (to_thread_architecture, t);
       /* Do not inherit to_read_description.  */
       INHERIT (to_get_ada_task_ptid, t);
@@ -897,6 +910,8 @@ update_current_target (void)
   de_fault (to_traceframe_info,
            (struct traceframe_info * (*) (void))
            tcomplain);
+  de_fault (to_execution_direction, default_execution_direction);
+
 #undef de_fault
 
   /* Finally, position the target-stack beneath the squashed