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don't call add_target for thread_db_ops

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Right now, "help target" will include this line:

    target multi-thread -- Threads and pthreads support

However, it doesn't make sense to invoke "target multi-thread".

This patch fixes the problem by not registering the multi-thread
target.  add_target does some needed initialization of the target_ops,
so I broke this out into a new function.

It isn't clear to me whether this patch requires a test case or not.
I'm not sure whether there are other unregistered targets; but if
there are, it seems unlikely that we test for their absence from the
help.

Built and regtested on x86-64 Fedora 18.

	* linux-thread-db.c (init_thread_db_ops): Call
	complete_target_initialization.
	(_initialize_thread_db): Don't call add_target.
	* target.c (complete_target_initialization): New function.
	(add_target_with_completer): Call it.
	* target.h (complete_target_initialization): Declare.
This commit is contained in:
Tom Tromey
2013-07-25 14:28:15 +00:00
parent cbb6aada97
commit c22a2b88fe
4 changed files with 32 additions and 8 deletions
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23
gdb/target.c
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@ -381,16 +381,12 @@ target_has_execution_current (void)
return target_has_execution_1 (inferior_ptid);
}
/* Add possible target architecture T to the list and add a new
command 'target T->to_shortname'. Set COMPLETER as the command's
completer if not NULL. */
/* Complete initialization of T. This ensures that various fields in
T are set, if needed by the target implementation. */
void
add_target_with_completer (struct target_ops *t,
completer_ftype *completer)
complete_target_initialization (struct target_ops *t)
{
struct cmd_list_element *c;
/* Provide default values for all "must have" methods. */
if (t->to_xfer_partial == NULL)
t->to_xfer_partial = default_xfer_partial;
@ -409,6 +405,19 @@ add_target_with_completer (struct target_ops *t,
if (t->to_has_execution == NULL)
t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero;
}
/* Add possible target architecture T to the list and add a new
command 'target T->to_shortname'. Set COMPLETER as the command's
completer if not NULL. */
void
add_target_with_completer (struct target_ops *t,
completer_ftype *completer)
{
struct cmd_list_element *c;
complete_target_initialization (t);
if (!target_structs)
{