From: Andreas Schwab <schwab@suse.de>
To: Frank van Maarseveen <frankvm@frankvm.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: bug in arch/ppc/kernel/misc.S: __ashrdi3?
Date: Fri, 15 Jul 2005 20:22:53 +0200 [thread overview]
Message-ID: <jey88853pe.fsf@sykes.suse.de> (raw)
In-Reply-To: <20050715160115.GA22990@janus> (Frank van Maarseveen's message of "Fri, 15 Jul 2005 18:01:15 +0200")
Frank van Maarseveen <frankvm@frankvm.com> writes:
> I don't really grok the code but an operand seems to be missing and the
> assembler makes something out of it I don't trust:
>
> _GLOBAL(__ashrdi3)
> ...
> rlwinm r8,r7,0,32 # t3 = (count < 32) ? 32 : 0
32 == 0x80000000 >> 26
> 00000000 <f>:
> f():
> 0: 54 e8 06 b4 rlwinm r8,r7,0,26,26
The mask begins at bit 26 and ends at bit 26 (counted from the left).
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2005-07-15 18:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-15 16:01 bug in arch/ppc/kernel/misc.S: __ashrdi3? Frank van Maarseveen
2005-07-15 18:22 ` Andreas Schwab [this message]
2005-07-16 17:39 ` Benjamin Herrenschmidt
2005-07-16 18:02 ` Andreas Schwab
2005-07-16 18:24 ` Benjamin Herrenschmidt
2005-07-18 12:14 ` Gabriel Paubert
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