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Re: CVS commit: src/sys/arch/arm/ep93xx
On Mon, May 26, 2008 at 10:57:36PM +0100, Chris Gilbert wrote:
>> Hm. My MIPS is very basic, but it seems like it generates external calls
>> for the division and does not optimise it as it should. Can someone
>> confirm that?
> heh, that's actually arm assembler, not MIPS :) They do look very similar
Bah, I'm not good with either.
> Because arm is softfloat it's expected that it will carry out division in
Well, this is integer arithmetic and the mul+shift translation is
guarantied to be correct. Do some ARMs even lack a hardware mul?
> However, the issue is actually the default gcc mode is an arm processor
> without umull. The kernel config should add:
> makeoptions CPUFLAGS="-march=armv4 -mtune=arm9"
Thanks, that's what I expected.
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