[U-Boot] [PATCH] arm: make arch memset/memcpy to work with Thumb2 builds
Bill Pringlemeir
bpringlemeir at nbsps.com
Fri Nov 21 17:45:27 CET 2014
> On 2014-11-20 20:14, Jeroen Hofstee wrote:
>> Ok thanks for digging that up, that doesn't sound like a problem
>> then. Stefan, can you check if you can actually fix the warnings
>> instead of suppressing them?
On 21 Nov 2014, stefan at agner.ch wrote:
> Ok, I could apply the changes from your patch and it fixed the
> warnings in memset.S. However, when I build the file in ARM mode then
> (without CONFIG_SYS_THUMB_BUILD set). I get this:
> arch/arm/lib/memset.S: Assembler messages: arch/arm/lib/memset.S:92:
> Error: bad instruction `stmiage ip!,{r1,r3-r8,lr}'
I think you need '.syntax unified' if you want those in ARM mode. I
guess you found that out too? I see,
+ .syntax unified
+#ifdef CONFIG_SYS_THUMB_BUILD
+ .thumb
+ .thumb_func
+#endif
in '[PATCH v2] arm: build arch memset/memcpy in Thumb2 mode'; so this
solved it?
I think it is a very nice feature to have Thumb2 on Vybrid. Many boot
devices may have limited bandwidth compared to the running system.
Thanks for your work.
Regards,
Bill Pringlemeir
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