[PATCH ARM/THUMB] replace mov with movs in crt0.S

[Jeff Johnston]

Richard,

I'm not very keen on keeping the sys/arm stuff in newlib.  Is it 
possible to start changing gcc to use libgloss by default?  Regarding 
your patch, is there a corresponding change required for libgloss/arm?

-- Jeff J.

On 11/25/2011 10:33 AM, Richard Earnshaw wrote:
> On 24/11/11 15:31, Richard Earnshaw wrote:
>>
>> And the reason I'm not seeing this is because my copy of newlib is out
>> of date :-(
>>
>> Hold on...
>>
>> R.
>>
>>
>
> So it turns out that Thomas' patch is substantially correct, but it's
> not all that is needed.  To get the build attributes correct we also
> need to force the assembler to behave when building thumb1 code.  The
> attached patch merges Thomas' changes plus some of my own to ensure that
> this is done (and also fixes up a case where SWI was being incorrectly
> generated for an M-class core)
>
> R.
>
>
> <date>   Richard Earnshaw<rearnsha@arm.com>
> 	Thomas Klein<th.r.klein@web.de>
>
> 	* sys/arm/crt0.S: Manually set the target architecture when
> 	compiling for Thumb1 on EABI targets.
> 	Don't use SWI on M-profile cores.
> 	Avoid v6-only Thumb-1 MOV instruction.
>