From: David Edelsohn <dje@watson.ibm.com>
To: toa@pop.agri.ch
Cc: Franz Sirl <Franz.Sirl@munich.netsurf.de>,
Linux-Dev <linuxppc-dev@lists.linuxppc.org>
Subject: Re: ppc assembler help needed
Date: Mon, 15 May 2000 14:26:28 -0400 [thread overview]
Message-ID: <200005151826.OAA26764@mal-ach.watson.ibm.com> (raw)
In-Reply-To: Message from Andreas Tobler <toa@pop.agri.ch> of "Mon, 15 May 2000 20:26:26 +0200." <3920414A.8B3AC43B@pop.agri.ch>
>>>>> Andreas Tobler writes:
Andreas> Franz Sirl wrote:
>> No, cmpw 0,r5,0 compares r5 to r0, use cmpwi 0,r5,0 to make a signed
>> compare of r5 against 0
Andreas> This works, thanks. The next question is automatically in the queue:
Andreas> all functions, insX/outsX in misc.S use this cmpw 0,r5,0, shouldn't it
Andreas> be a cmpwi 0,r5,0 then?
Presumably all of the assembly functions want to compare against
an immediate value and should use cmpwi.
Andreas> BTW, does it mind which CPU is behind? In my case it's a 601.
cmpwi is valid for all PowerPC processors, including 601.
David
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2000-05-15 18:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-05-15 15:54 ppc assembler help needed Andreas Tobler
2000-05-15 16:08 ` Franz Sirl
2000-05-15 18:26 ` Andreas Tobler
2000-05-15 18:26 ` David Edelsohn [this message]
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