[PATCH 1/2] Merge linker plugin handling into BFD plugin support
H.J. Lu
hjl.tools@gmail.com
Wed Feb 11 13:05:00 GMT 2015
On Mon, Feb 09, 2015 at 05:01:19AM -0800, H.J. Lu wrote:
>
> Linker plugin_maybe_claim is the interface of linker plugin support.
> This patch extracts linker plugin_maybe_claim into plugin_object_p and
> makes it available to BFD via a new function:
>
> void register_ld_plugin_object_p (const bfd_target *(*) (bfd *));
>
> bfd_plugin_object_p calls plugin_object_p first registered by linker. It
> adds an enum bfd_plugin_format field and a pointer to plugin dummy BFD so
> that plugin_object_p stores plugin dummy BFD to allow plugin_maybe_claim
> to retrieve it later.
>
> bfd/
>
> PR ld/17878
> * bfd.c (bfd_plugin_format): New.
> (bfd): Add plugin_format and plugin_dummy_bfd.
> * plugin.c (try_load_plugin): Take a pointer to bfd_boolean
> argument to return TRUE if any plugin is found. Set plugin_format.
> (has_plugin): New.
> (bfd_plugin_target_p): New.
> (bfd_plugin_specified_p): Likewise.
> (bfd_plugin_target_p): Likewise.
> (register_ld_plugin_object_p): Likewise.
> (bfd_plugin_set_plugin): Set has_plugin.
> (load_plugin): Cache try_load_plugin result.
> (bfd_plugin_object_p): Try ld_plugin_object_p first. Check
> plugin_format.
> * plugin.h (bfd_plugin_target_p): New.
> (bfd_plugin_specified_p): Likewise.
> (register_ld_plugin_object_p): Likewise.
> * bfd-in2.h: Regenerated.
>
> ld/
>
> PR ld/17878
> * plugin.c: Include ../bfd/plugin.h.
> (plugin_get_ir_dummy_bfd): Call bfd_create with
> link_info.output_bfd instead of srctemplate. Copy BFD info
> from srctemplate only if it doesn't use BFD plugin target
> vector.
> (plugin_load_plugins): Call register_ld_plugin_object_p with
> (plugin_object_p)
> (plugin_maybe_claim): Renamed to ...
> (plugin_object_p): This. Return dummy BFD target vector if
> input is calimed by plugin library. Otheewise, return NULL.
> Update plugin_format and plugin_dummy_bfd.
> (plugin_maybe_claim): New. Use plugin_object_p.
I checked it in with a small update to plugin_object_p:
/* Don't try the dummy object file. */
if ((ibfd->flags & BFD_PLUGIN) != 0)
return NULL;
The dummy object file will never be a plugin object.
H.J.
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