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Re: thread-ready ABIs

To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Subject: Re: thread-ready ABIs
From: Ulrich Drepper <drepper@redhat.com>
Date: 18 Jan 2002 12:20:51 -0800
Cc: "H . J . Lu" <hjl@lucon.org>, GNU libc hacker <libc-hacker@sources.redhat.com>, linux-mips@oss.sgi.com
In-reply-to: <Pine.GSO.3.96.1020118204144.22923P-100000@delta.ds2.pg.gda.pl>
References: <Pine.GSO.3.96.1020118204144.22923P-100000@delta.ds2.pg.gda.pl>
Reply-to: drepper@redhat.com (Ulrich Drepper)
Sender: owner-linux-mips@oss.sgi.com
User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.5 (asparagus)
"Maciej W. Rozycki" <macro@ds2.pg.gda.pl> writes:

> But what about that Alpha's special code?  It could possibly be
> reused given the large Alpha's similarity to MIPS.

No.  Alpha has certain builtin code which looks similar to calls or
software interrupts but are executed in the CPU.  This allows access
to some memory in the CPU which is almost as fast as a normal register
access.  MIPS doesn't have such hardware.  If you cannot find a
register you're doomed.

-- 
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Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
Red Hat          `--' drepper at redhat.com   `------------------------

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