From: kyle@mcmartin.ca (Kyle McMartin)
To: Grant Grundler <grundler@parisc-linux.org>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] memory barriers, spinlocks, debuglocks, oh my
Date: Mon, 30 Aug 2004 00:14:19 -0400 [thread overview]
Message-ID: <20040830041419.GA12022@mcmartin.ca> (raw)
In-Reply-To: <20040830040635.GA18211@colo.lackof.org>
On Sun, Aug 29, 2004 at 10:06:35PM -0600, Grant Grundler wrote:
> I think you missed Joel's point.
> Where does SPIN_UNLOCK set the register that it stores to 1?
>
Eh, that's what the "r" (...) does. As I understand it, GCC will have
the value inside the brackets loaded into a register (in this case,
%1 which can be any general register) when the execution path gets to
the assembler.
AIUI, the syntax is
asm(" /* assembler */ "
: output
: input
: clobbers );
Cheers,
--
Kyle McMartin
_______________________________________________
parisc-linux mailing list
parisc-linux@lists.parisc-linux.org
http://lists.parisc-linux.org/mailman/listinfo/parisc-linux
next prev parent reply other threads:[~2004-08-30 4:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-27 16:37 [parisc-linux] memory barriers, spinlocks, debuglocks, oh my Kyle McMartin
[not found] ` <1093625820.2010.26.camel@mulgrave>
[not found] ` <20040827170342.GD25975@baldric.uwo.ca>
2004-08-28 16:57 ` Joel Soete
2004-08-28 17:07 ` Kyle McMartin
2004-08-28 22:15 ` Kyle McMartin
2004-08-29 16:11 ` Joel Soete
2004-08-29 16:13 ` Kyle McMartin
2004-08-30 4:06 ` Grant Grundler
2004-08-30 4:14 ` Kyle McMartin [this message]
2004-08-30 4:30 ` Grant Grundler
2004-08-30 4:37 ` Kyle McMartin
2004-08-29 16:14 ` Thibaut VARENE
2004-08-29 17:45 ` John David Anglin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040830041419.GA12022@mcmartin.ca \
--to=kyle@mcmartin.ca \
--cc=grundler@parisc-linux.org \
--cc=parisc-linux@lists.parisc-linux.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.