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Date: Tue, 25 Oct 2005 19:32:53 +0200
From: Djame Seddah <djame.seddah@free.fr>
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Subject: Re: [Qemu-devel] User-space emulation on Mac OS X to run
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To: qemu-devel@nongnu.org

Vesselin Peev a =E9crit :

> On 10/25/05 "Djame Seddah" <djame.seddah@free.fr> wrote:
>
>
>> by the way all ppc are neutral, you only have to set one bit in order=20
>> to change the endianness
>
>
> My understanding is that existing Mac OSX for PPC does not support the=20
> the execution of little-endian PPC programs without jumping through=20
> hoops, which is infeasible for normal PPC programs. So infeasible,=20
> that there is (only?) one such program, Virtual PC, the version that=20
> works on CPUs prior to and including G4, but not G5. VirtualPC is=20
> probably using assembly instructions and/or installs a driver to=20
> execute little-endian program code under OSX in order to emulate a=20
> Pentium x86.
>
> One cannot even use the "-mlittle" GCC option to produce a PPC binary=20
> to run under Mac OSX, "-mlittle" is only for embedded PPC CPUs.
>
> The G5 processors do not support little-endian mode -- that's the=20
> reason Microsoft took so long to port Virtual PC to that processor.
>
> -Vesko



Ok, I had the ppc 603e book and a [long] tutorial on ppc embedded and I=20
really thought all the ppc was endian neutral.
Thanks for the anwser.