From: "Miguel A. Bolanos" <mike@costarica.net>
To: a.martone@retepnet.it
Cc: linux-8086@vger.kernel.org
Subject: Re: reducing Elks code size...
Date: 22 Feb 2003 14:57:27 -0600 [thread overview]
Message-ID: <1045947448.2621.100.camel@nemesis> (raw)
In-Reply-To: <200302212242.00571.a.martone@retepnet.it>
Greetings,
On Fri, 2003-02-21 at 16:10, Alfonso wrote:
> This file:
>
> elks/arch/i86/286pmode/irq.s
>
> may be reduced to save 564 bytes (!!) of code. This is not a massive
> optimization process. It just saves space by pushing a value on the
> stack and jumping to a generic routine instead of repeating the entire
> sequence every time (like elks/arch/i86/kernel/irqtab.c), so that its
> final code size is 0x00B6 bytes instead of 0x02EA bytes (I still
> wonder why the irq.s file was written in that weird mode). The do_exc
> routine in the file elks/arch/i86/kernel/main.c does not need changes:
> the bp register is changed (to get again the saved exception/interrupt
> value) but the stack (with all parameters) remains the same.
>
This looks fine, nice work really.
Would you like to sent out a patch in stead of the code? :)
regards
Mike
prev parent reply other threads:[~2003-02-22 20:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-21 22:10 reducing Elks code size Alfonso
2003-02-22 18:23 ` Alan Cox
2003-02-22 20:57 ` Miguel A. Bolanos [this message]
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