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Re: macppc vs evbppc binary packages



Matt Thomas <matt%3am-software.com@localhost> writes:

> On Apr 18, 2012, at 9:29 AM, Greg Troxel wrote:
>
>> 
>> We are trying to build packages on some evbppc systems (under
>> -6/current) and finding them a bit crashy under load.  So I am wondering
>> to what extent packages built on a macppc (that's from 2001 or so,
>> dual-core 500 Mhz G3) will run on an evbppc.   I would expect all the
>> instructions in the G3 to be present in the new chips (although I
>> understand the memory management architecture is different).   But, I
>> wonder if the ABI is somehow different.  I'd appreciate advice voting
>> for:
>
> The problem is your evbppc systems don't emulate the OEA FP instructions.
> So when it encounters one, it will get a SIGILL.
>
> We could put the fpemul code in the kernel but that code isn't that
> modular and need some help to work on non-IBM4xx.

So if I modified the compiler on the macppc to have soft-float as
default, it might work?

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