From: Wolfgang Denk <wd@denx.de>
To: Pei-Jie Hong <Pei-Jie.Hong@cern.ch>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: A question about head.S
Date: Wed, 28 Jun 2000 17:30:03 +0200 [thread overview]
Message-ID: <200006281530.RAA30903@denx.local.net> (raw)
In-Reply-To: Your message of "Fri, 28 Apr 2000 16:29:46 +0200." <3909A05A.E1901D52@cern.ch>
In message <3909A05A.E1901D52@cern.ch> you wrote:
>
> In arch/ppc/kernel/head.S, there are lines looks like
> bne 4f or b 5f, I know they are branch instructions, but what
> about 4f or 5f. Are they the relative length? and what is the unit,
> I mean if 4f is a number , is it number of instructions or number
> of bytes or words?
You will also see labels "4:" and "5:" etc. in the text. "4f" means
"label 4 searching forward", while "5b" means "label 5 seaching
backwards".
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
Heavier than air flying machines are impossible.
-- Lord Kelvin, President, Royal Society, c. 1895
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2000-06-28 15:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-04-28 14:29 A question about head.S Pei-Jie Hong
2000-06-28 15:11 ` Grant Erickson
2000-06-28 15:17 ` Jerry Van Baren
2000-06-28 15:30 ` Wolfgang Denk [this message]
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