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RFC: [PATCH] Add output_type to bfd_link_info

H.J. Lu hjl.tools@gmail.com
Tue Aug 18 12:56:00 GMT 2015 
On Mon, Aug 17, 2015 at 9:48 PM, Alan Modra <amodra@gmail.com> wrote:
> On Mon, Aug 17, 2015 at 08:43:38AM -0700, H.J. Lu wrote:
>> The "shared" field in bfd_link_info is set for both DSO and and PIE.
>> There are separate fields for executable and relocatable outputs.  This
>> patch adds an "output_type" field:
>>
>> enum output_type
>> {
>>   type_unknown = 0,
>>   type_executable,
>>   type_dll,
>>   type_relocatable
>> };
>>
>> and a "pic" field to bfd_link_info to replace shared, executable and
>> relocatable fields so that we can use the "output_type" field to check
>> for output type and the "pic" field check if output is PIC.  Macros:
>>
>> are provided to check for output features.
>>
>> Any comments, objections, feedbacks?
>
> Good!  I started a patch like this a while ago, so you've saved me the
> trouble of finishing my work.  :)
>
> Some comments on the patch itself:
>
> I think you can delete type_unknown, making type_executable the
> first enum (value 0) which happens to be the correct default.
>
> I'd like to see the macros used in ld/, eg. instead of
> "link_info.type != type_relocatable" write
> "!bfd_link_relocatable (&link_info)".
> The reason for that is consistency, so grep over bfd/ and ld/ can
> more easily pick up given output types, and to make it easy to
> change the underlying flag bits.
>
> I spotted a few places that can be optimised but rather than list them
> here I'll commit a followup patch.

Updated and checked in.

Thanks.

-- 
H.J.
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