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Revert previous tweaks 

As we migrate to the new to_xfer_partial interface, some of previous
tweaks become unnecessary, we don't have to check traceframe is
selected in each target implementation, so this patch below is
reverted.

  [PATCH] Send qXfer:traceframe-info:read when traceframe is selected.
  https://sourceware.org/ml/gdb-patches/2013-10/msg00752.html

Third, to_traceframe_info is only called when traceframe is selected,
that means it is only called when target is remote, tfile or ctf, so
this patch can be partially reverted,

  https://sourceware.org/ml/gdb-patches/2013-04/msg00000.html

gdb:

2014-02-23  Yao Qi  <yao@codesourcery.com>

	Revert two patches:

	2013-10-25  Yao Qi  <yao@codesourcery.com>

	* remote.c (remote_traceframe_info): Return early if
	traceframe is not selected.

	2013-07-19  Yao Qi  <yao@codesourcery.com>

	* target.c (update_current_target): Change the default action
	of 'to_traceframe_info' from tcomplain to return_zero.
	* target.h (struct target_ops) <to_traceframe_info>: Add more
	comments.
This commit is contained in:
Yao Qi 2013-12-16 21:13:36 +08:00
parent 5a2eb0ef7f
commit f73023dd06
3 changed files with 20 additions and 18 deletions
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16
gdb/ChangeLog
View File

@ -1,3 +1,19 @@
2014-02-23 Yao Qi <yao@codesourcery.com>
Revert two patches:
2013-10-25 Yao Qi <yao@codesourcery.com>
* remote.c (remote_traceframe_info): Return early if
traceframe is not selected.
2013-07-19 Yao Qi <yao@codesourcery.com>
* target.c (update_current_target): Change the default action
of 'to_traceframe_info' from tcomplain to return_zero.
* target.h (struct target_ops) <to_traceframe_info>: Add more
comments.
2014-02-23 Yao Qi <yao@codesourcery.com>
* valops.c (read_value_memory): Rewrite it. Call

5
gdb/remote.c
View File

@ -11058,11 +11058,6 @@ remote_traceframe_info (struct target_ops *self)
{
char *text;
/* If current traceframe is not selected, don't bother the remote
stub. */
if (get_traceframe_number () < 0)
return NULL;
text = target_read_stralloc (&current_target,
TARGET_OBJECT_TRACEFRAME_INFO, NULL);
if (text != NULL)

17
gdb/target.h
View File

@ -974,20 +974,11 @@ struct target_ops
TARGET_DEFAULT_NORETURN (tcomplain ());
/* Return a traceframe info object describing the current
traceframe's contents. If the target doesn't support
traceframe info, return NULL. If the current traceframe is not
selected (the current traceframe number is -1), the target can
choose to return either NULL or an empty traceframe info. If
NULL is returned, for example in remote target, GDB will read
from the live inferior. If an empty traceframe info is
returned, for example in tfile target, which means the
traceframe info is available, but the requested memory is not
available in it. GDB will try to see if the requested memory
is available in the read-only sections. This method should not
cache data; higher layers take care of caching, invalidating,
and re-fetching when necessary. */
traceframe's contents. This method should not cache data;
higher layers take care of caching, invalidating, and
re-fetching when necessary. */
struct traceframe_info *(*to_traceframe_info) (struct target_ops *)
TARGET_DEFAULT_RETURN (NULL);
TARGET_DEFAULT_RETURN (tcomplain ());
/* Ask the target to use or not to use agent according to USE. Return 1
successful, 0 otherwise. */