[OpenBIOS] OpenBIOS and ppc64?
andreas.faerber at web.de
Fri Oct 1 00:37:20 CEST 2010
Am 01.10.2010 um 00:03 schrieb Alexander Graf:
> On 30.09.2010, at 19:02, Andreas Färber wrote:
>> What's the plan for fixing this? Will we need an openbios-ppc64
>> after all, or is there a way to fix these issues in openbios-ppc
>> using uint64_t and some assembler magic? The 970 init (arch/ppc/
>> qemu/init.c:ppc64_patch_handlers) apparently does something clever
>> for the interrupt handlers and seems able to use 64-bit ld/std
>> instructions in start.S. That still wouldn't help with ucell based
>> structs and C functions of course...
> Those are pure fixups to get back to 32 bit mode from the interrupt
> handlers, as they go into 64 bit mode by default.
I'd really hate to see code duplication between an arch/ppc and arch/
ppc64, since we'll want ppc and ppc64 versions of New World Macs and
The easiest would be if I would find out how to configure a multi-lib
ppc/ppc64 gcc-4.4.x, so that we can compile a ppc64 version using
Otherwise we'd need to provide a separate cross-ppc64 config file and
hack switch-arch to drop the "64" at some point so that it builds in
obj-ppc64 but uses code from ppc...
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