amd64 newbie question [32 bit compatibility]
peterjeremy at optushome.com.au
Sun Mar 25 19:11:12 UTC 2007
On 2007-Mar-25 06:09:43 +0200, Peter Ulrich Kruppa <ulrich at pukruppa.net> wrote:
>Is there any kind of documentation about this "32 bit
>compatibility layer"? Do I have one? Does it work and if yes,
When in 64-bit mode, amd64 family chips can execute 32-bit code in much
the same way as the x86 chips can execure 16-bit code via VM86. This
is referred to as "Compatibility Mode" in the AMD documentation. There
is AMD documentation on this but I can't quickly find the details.
FreeBSD supports 32-bit compatibility mode by default: When the ELF
loader is handed a 32-bit executable, it starts a compatibility mode
process and uses 32-bit shared libraries (/usr/lib32, /usr/local/lib32,
There are still some rough edges - in particular, 32-bit threaded
programs don't work.
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