site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On Wed, Aug 19, 2009 at 10:53, rohan a<info1686@gmail.com> 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 ?
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