From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: HongWoo Lee <hongwoo7@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: Simple question about powerpc kernel source.
Date: Mon, 20 Jul 2009 20:02:38 +1000 [thread overview]
Message-ID: <1248084158.30899.8.camel@pasglop> (raw)
In-Reply-To: <4A643219.3070004@gmail.com>
On Mon, 2009-07-20 at 18:00 +0900, HongWoo Lee wrote:
> Hi all,
>
> I have something to ask for the ppc kernel source.
>
> #define LOADADDR(rn,name) \
> lis rn,name##@highest; \
> ori rn,rn,name##@higher; \
> rldicr rn,rn,32,31; \
> oris rn,rn,name##@h; \
> ori rn,rn,name##@l
>
> Is ## used for concatenation. I'm not sure because it is just meaningless.
> If so what on earth is the result of concatenating ?
>
> And is there a good reference to understand powerpc asm ?
> I'm reading Power ISA, but I can't find @highest, @higher and ##.
> It would be good to know the reference book.
You already asked pretty much the same question with the subject "Simple
question about powerpc asm" and it was already replied to.
Cheers,
Ben.
next prev parent reply other threads:[~2009-07-20 10:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-20 9:00 Simple question about powerpc kernel source HongWoo Lee
2009-07-20 10:02 ` Benjamin Herrenschmidt [this message]
2009-07-21 0:15 ` HongWoo Lee
2009-07-21 0:23 ` Benjamin Herrenschmidt
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=1248084158.30899.8.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=hongwoo7@gmail.com \
--cc=linuxppc-dev@lists.ozlabs.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).