From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <56a297000601302135j778614c3r1ba9751ffa557cff@mail.gmail.com>
Date: Tue, 31 Jan 2006 14:35:30 +0900
From: Noah Evans <noah.evans@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Data segment vs BSS
In-Reply-To: <98cca1d3171d88afdc40c9a1c4ff0e62@plan9.bell-labs.com>
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	<98cca1d3171d88afdc40c9a1c4ff0e62@plan9.bell-labs.com>
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Hmmmmm... it will require a lot of work understanding the linker, but
if I end up running out of memory, I might see if I can get the const
keyword to throw  those variables in the text section and avoid the
problem altogether.

What do you think?

Noah



On 1/31/06, jmk@plan9.bell-labs.com <jmk@plan9.bell-labs.com> wrote:
> The normal Plan 9 binary format assumes the BSS starts immediately
> after the data, there is no place in the header to specify otherwise.
> So, you want to use a different header format, e.g. ELF or one of
> the machine-specific boot formats, see /sys/src/cmd/?l/asm.c for
> examples. There may be one there already that suits, or you can easily
> add another for your particular environment.
>
> But how do you separate out the constant data?
>
> On Mon Jan 30 23:36:55 EST 2006, noah.evans@gmail.com wrote:
> > Hey, quick 2l question. Is there any way to keep constant values in
> > ROM? If possible I'd like to keep the data section entirely in ROM
> > and only keep the BSS section in RAM. However, both sections seem to
> > be inextricably linked.
> >
> > What's the proper way to deal with this?
> >
> > Noah
>