[Buildroot] [PATCH v5 2/2] Patch to assembler to strip LOCK prefix.

[Arnout Vandecappelle <arnout@mind.be>]

On 07-10-15 10:53, Kinsella, Ray wrote:
> Hi Arnout,
> 
> On Sun, 2015-10-04 at 19:15 +0100, Arnout Vandecappelle wrote:
>>  We now have a toolchain wrapper both for internal and external toolchains. This
>> will allow you to reliably pass options to the compiler. So we'd preferably use
>> that approach.
> 
> Ok - I will investigate - any examples I can look at?
> 
>>  Also, we think it's worthwhile to add a new subarchitecture for the Quark in
>> arch/Config.in.x86. This should set the arch and tune options to i586, but the
>> toolchain wrapper can then carry an option that adds -Wa,-momit-lock-prefix=yes.
>> This also fixes the problem for external toolchains.
> 
> Ok - I actually proto-typed this and I couldn't get it to work reliably,
> hence the nasty patch.

 Should be fairly simple with the toolchain wrapper. I think it it best to
refactor toolchain/toolchain-wrapper.mk a little to create a new variable to
contain the BR_ADDITIONAL_CFLAGS, and then conditionally add the -Wa,-momit-...
option to it.

> I should have it on a branch (I hope), I can dust it off. 
> 
>>  So the proposal is that you create a first patch that adds BR2_x86_quark and
>> adds -Wa,-momit-lock-prefix=yes, and then a second patch that adds the Galileo2
>> defconfig.
> 
> ok 
> 
>>  I have now marked both patches as Changes Requested in out patch tracking
>> system, so please resubmit a new version that fixes the above comments,
>> otherwise we'll forget about your contribution.
> 
> ok - will followup.
> (is the patch tracking system public?)

http://patchwork.ozlabs.org/project/buildroot/list/

 If you create a login with the same email address as the one you send patches
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Superseded when you send a new version).

 Regards,
 Arnout


-- 
Arnout Vandecappelle                          arnout at mind be
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