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From: HongWoo Lee <hongwoo7@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Subject: Simple question about powerpc kernel source.
Date: Mon, 20 Jul 2009 18:00:09 +0900	[thread overview]
Message-ID: <4A643219.3070004@gmail.com> (raw)

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.

Thanks in advance.


Regards,
HongWoo.

             reply	other threads:[~2009-07-20  9:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-20  9:00 HongWoo Lee [this message]
2009-07-20 10:02 ` Simple question about powerpc kernel source Benjamin Herrenschmidt
2009-07-21  0:15   ` HongWoo Lee
2009-07-21  0:23     ` Benjamin Herrenschmidt

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