Daniel Jacobowitz' update to Michael Snyder's reverse debugging patchesdrow-reverse-20070409-branch

1 files changed, 32 insertions, 1 deletions

diff --git a/gdb/target.h b/gdb/target.h
index d9f1ca1..454193e 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -131,7 +131,11 @@ enum target_waitkind
        inferior, rather than being stuck in the remote_async_wait()
        function. This way the event loop is responsive to other events,
        like for instance the user typing.  */
-    TARGET_WAITKIND_IGNORE
+    TARGET_WAITKIND_IGNORE,
+
+    /* The target has run out of history information,
+       and cannot run backward any further.  */
+    TARGET_WAITKIND_NO_HISTORY
   };
 
 struct target_waitstatus
@@ -150,6 +154,14 @@ struct target_waitstatus
     value;
   };
 
+/* Reverse execution.  */
+enum exec_direction_kind
+  {
+    EXEC_FORWARD,
+    EXEC_REVERSE,
+    EXEC_ERROR
+  };
+
 /* Possible types of events that the inferior handler will have to
    deal with.  */
 enum inferior_event_type
@@ -500,6 +512,13 @@ struct target_ops
        was available.  */
     const struct target_desc *(*to_read_description) (struct target_ops *ops);
 
+    /* Set execution direction (forward/reverse).  */
+    int (*to_set_execdir) (enum exec_direction_kind);
+    /* Get execution direction (forward/reverse).  */
+    enum exec_direction_kind (*to_get_execdir) (void);
+
+    void (*to_doing_call) (int starting);
+
     int to_magic;
     /* Need sub-structure for target machine related rather than comm related?
      */
@@ -1194,6 +1213,18 @@ extern int target_stopped_data_address_p (struct target_ops *);
 #define target_stopped_data_address_p(CURRENT_TARGET) (1)
 #endif
 
+/* Forward/reverse execution direction.
+   These will only be implemented by a target that supports reverse execution.
+*/
+#define target_get_execution_direction() \
+    (current_target.to_get_execdir ? \
+     (*current_target.to_get_execdir) () : EXEC_ERROR)
+
+#define target_set_execution_direction(DIR) \
+    (current_target.to_set_execdir ? \
+     (*current_target.to_set_execdir) (DIR) : EXEC_ERROR)
+
+
 extern const struct target_desc *target_read_description (struct target_ops *);
 
 /* Routines for maintenance of the target structures...