[U-Boot] [PATCH] ARM: enable CONFIG_USE_PRIVATE_LIBGCC by default

[Masahiro Yamada]

Hi Albert,


2015-07-02 6:21 GMT+09:00 Albert ARIBAUD <albert.u.boot at aribaud.net>:
> On Thu, 16 Apr 2015 11:21:44 +0200, Albert ARIBAUD
> <albert.u.boot at aribaud.net> wrote:
>> Hello Masahiro,
>>
>> Your patch clashes with Pavel's already committed
>> break-if-private-libgcc-and-thumb, causing many boards to fail building.
>>
>> I am putting your patch in 'under review' state until I can have a look
>> at what happens with private libgcc and thumb.
>
> Hmm, even with the libgcc+thumb thing fixed, this patch still causes
> quite a few target to fail:
>
> - without the patch, buildman yields 503 1 12 / 516.
> - With the patch, buildman yields 488 1 27 / 516.
>
> Of these, 10 are aarch64 boards which now try to build a private libgcc
> with some hardwired 32-bit mnemonics :
>
> | arch/arm/lib/_ashldi3.S:21: Error: operand 1 should be an integer
> register -- `subs r3,r2,#32' | arch/arm/lib/_ashldi3.S:22: Error: unknown mnemonic `rsb' -- `rsb ip,r2,#32'
> | arch/arm/lib/_ashldi3.S:23: Error: unknown mnemonic `movmi' -- `movmi r1,r1,lsl r2'
> | arch/arm/lib/_ashldi3.S:24: Error: unknown mnemonic `movpl' -- `movpl r1,r0,lsl r3'
> | arch/arm/lib/_ashldi3.S:25: Error: unknown mnemonic `orrmi' -- `orrmi r1,r1,r0,lsr ip'
> | arch/arm/lib/_ashldi3.S:26: Error: operand 1 should be an integer register -- `mov r0,r0,lsl r2'
> | arch/arm/lib/_ashldi3.S:27: Error: operand 1 should be an integer register -- `mov pc,lr'
>
> This should be fairly easy to fix by
>  defaulting CONFIG_USE_PRIVATE_LIBGCC to
>
> The other 5 failures are snow, smdk5250, peach-pi, smdk5420, and
> peach-pit, all of which show the same error:
>
>> arch/arm/lib/lib.a(div0.o): In function `__div0':
>> arch/arm/lib/div0.c:13: undefined reference to `hang'
>> make[2]: *** [spl/u-boot-spl] Error 1
>> make[1]: *** [spl/u-boot-spl] Error 2
>
> That one is be a dependency on hang(). This function... hangs out... in
> lib/hang.c, which according to lib/Makefile should be included in any
> build, SPL or otherwise; but it appears lib/ is not built at all for
> SPL, at least for these five targets.
>
> Masahiro, can you have a look at e.g. snow (arm) and ls2085ardb
> (aarch64) and see if you can update your patch to make sure these two
> targets build? The other 13 should follow then.

OK.
I will take a look.




-- 
Best Regards
Masahiro Yamada