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List: linuxppc64-dev
Subject: binary compatibility question
From: benh () kernel ! crashing ! org (benh at kernel ! crashing ! org)
Date: 2002-02-12 12:36:49
Message-ID: 20020212123649.24305 () mailhost ! mipsys ! com
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>John> Will a 32-bit linuxppc application will run on a linuxppc64 system
>John> without recompilation?
>
> It should, as long as the 32-bit application does not make any
>assumptions which are not defined by the architecture, such as the size of
>cache blocks, e.g., dcbz.
That wouldn't be a problem if applications/glibc used the AUX entries
provided by the kernel as those tell about the cache line size, the
CPU features, etc... (well, they do on the 32 bits kernel, I suppose
this was ported over to ppc64 but didn't check).
Unfortunately, AFAIK, no userland still make use of those informations.
Ben.
** Sent via the linuxppc64-dev mail list. See http://lists.linuxppc.org/
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