From: Matthew Wilcox <matthew@wil.cx>
To: Greg McGary <greg@mcgary.org>
Cc: linux-arch@vger.kernel.org
Subject: Re: Proposal: (u)intptr_t replaces (unsigned) long as opaque type
Date: Sat, 18 Sep 2010 17:54:37 -0600 [thread overview]
Message-ID: <20100918235436.GD25139@parisc-linux.org> (raw)
In-Reply-To: <4C95324B.2030707@mcgary.org>
On Sat, Sep 18, 2010 at 02:42:35PM -0700, Greg McGary wrote:
> I am porting Linux to a new architecture (a massively multi-threaded network processor), which has a unique and bothersome characteristic: sizeof (void*) > sizeof (long). In most regards, it is a 32-bit machine, but pointers and all GPRs are 48 bit. Pointers occupy 64 bits in memory, with 16 bits ignored by load/store.
Linux really only supports ILP32 and LP64 models. Pick one, and make
your gcc mmtnp-unknown-linux triplet support it.
ILP32 may be a better model for you, depending how much RAM your mmtnp
processor is likely to support.
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
next prev parent reply other threads:[~2010-09-18 23:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-18 21:42 Proposal: (u)intptr_t replaces (unsigned) long as opaque type Greg McGary
2010-09-18 23:54 ` Matthew Wilcox [this message]
2010-09-19 2:43 ` Greg McGary
2010-09-19 4:06 ` Matthew Wilcox
2010-09-19 16:53 ` Greg McGary
2010-09-20 9:30 ` Arnd Bergmann
2010-09-20 20:28 ` Greg McGary
2010-09-21 6:32 ` Arnd Bergmann
2010-09-19 4:33 ` Alexey Zaytsev
2010-09-19 6:50 ` David Howells
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