Re: 64-bit Mac OS X kernel
Re: 64-bit Mac OS X kernel
- Subject: Re: 64-bit Mac OS X kernel
- From: Mo McRoberts <email@hidden>
- Date: Wed, 19 Aug 2009 10:58:28 +0100
On Wed, Aug 19, 2009 at 10:53, rohan a<email@hidden> wrote:
> Hi All,
> Does Mac OS X 10.5 provide separate 32-bit and 64-bit kernels
> ?Or there is only one type of kernel supported.
Under 10.5 (we can’t discuss 10.6 on this list), there is only one
kernel, which runs both 32-bit and 64-bit binaries. Although it
actually contains a 64-bit version of the code under 10.5.8, I don't
think it's ever actually booted as a 64-bit kernel outside of Apple’s
internal development labs.
[mo@pip ~]$ file /mach_kernel
/mach_kernel: Mach-O universal binary with 3 architectures
/mach_kernel (for architecture x86_64): Mach-O 64-bit executable x86_64
/mach_kernel (for architecture i386): Mach-O executable i386
/mach_kernel (for architecture ppc): Mach-O executable ppc
> What I mean is that like Windows has separate version x86, x86_64, IA
> is there something like this for Mac OS X 10.5 as well ?
>
> If not are there only 2 version:
> Intel i386 and PowerPC ?
Just one.
> and does the same thing run on 32-bit and 64-bit hardware ?
Yes.
--
http://nevali.net
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