Date: Tue, 21 Nov 2000 22:21:19 -0500 (EST) From: Daniel Eischen <eischen@vigrid.com> To: Jake Burkholder <jburkhol@home.com> Cc: John Baldwin <jhb@FreeBSD.ORG>, Jonathan Lemon <jlemon@flugsvamp.com>, arch@FreeBSD.ORG Subject: Re: Thread-specific data and KSEs Message-ID: <Pine.SUN.3.91.1001121221700.26351C-100000@pcnet1.pcnet.com> In-Reply-To: <20001122015756.AF470BA7A@io.yi.org>
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On Tue, 21 Nov 2000, Jake Burkholder wrote: > Doug uses $8 (t7) on the alpha for the per-cpu data pointer, and r13 > on ia64. Not that that means anything to me. > > alpha/inclue/globals.h: > > register struct globaldata *globalp __asm__("$8"); > > ia64/include/globals.h: > > register struct globaldata *globalp __asm__("r13"); > > Its not really relevant if they're the same in and out of the kernel > cause the memory isn't addressable in both places anyway. I don't necessarily even need them to point to anything. Just an index into a table is sufficient, though it might be more efficient to use it as a pointer on architectures where its large enough. -- "Some folks are into open source, but me, I'm into open bar." -- Spencer F. Katt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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