[Top] [All Lists]

Re: SiByte 1480 & Branch Likely instructions?

To: Ralf Baechle <>
Subject: Re: SiByte 1480 & Branch Likely instructions?
From: "Maciej W. Rozycki" <>
Date: Mon, 10 Dec 2007 16:20:27 +0000 (GMT)
Cc: Kaz Kylheku <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <DDFD17CC94A9BD49A82147DDF7D545C5590CF0@exchange.ZeugmaSystems.local> <> <> <>
On Mon, 10 Dec 2007, Ralf Baechle wrote:

> It would devastate the performance of some binaries.

 I think this is what the deprecation is about. ;-)

> As an intellectual challenge, how far can you strip down a MIPS
> implementation and emulate removed instructions in the kernel ;-)

 Well, going back to MIPS I is certainly achievable (OK, we could keep 
ll/sc for the sake of sanity) and then perhaps a little bit further.  
After all, all of the ALU ops can be done with the NOR op only. ;-)


<Prev in Thread] Current Thread [Next in Thread>