Re: macppc vs evbppc binary packages

[Matt Thomas <matt%3am-software.com@localhost>]

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.