linux-kernel - Re: [pp] kbuild: asm-offsets generalized

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Message-ID: <20070401204203.GA10761@uranus.ravnborg.org>
Date:	Sun, 1 Apr 2007 22:42:03 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Oleg Verych <olecom@...wer.upol.cz>
Cc:	LKML <linux-kernel@...r.kernel.org>, Andi Kleen <ak@....de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [pp] kbuild: asm-offsets generalized

On Fri, Feb 16, 2007 at 04:59:29PM +0100, Oleg Verych wrote:
> > > 
> > > Proposition will follow.
> > > 
> > []
> > 
> > [patch proposition] kbuild: lguest with private asm-offsets
> [] 
> >  * needs "asm-offsets magic demystified, generalized".
> [] 
> 
> [patch proposition] kbuild: asm-offsets generalized
> 
>  * scripts/mkCconstants:
>    - asm-offsets magic demystified, generalized,
> 
>  * (hopefully) more readable sed scripts,
> 
>  * top Kbuild may be updated...
> 
>  * file needs `chmod u+x`, i don't know, how it's done in patch(1).

Can I ask you to provide a complete patch that replaces the current
asm-offset stuff with your more readable script version.

Name the script: mkasm-offset.sh to make a direct connection to 
the resulting .h file name.

Thanks,

	Sam


> 
> pp-by: Oleg Verych
> ---
>  scripts/mkCconstants           |  50 +++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 50 insertions(+), 0 deletions(-)
> 
> Index: linux-2.6.20/scripts/mkCconstants
> ===================================================================
> --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> +++ linux-2.6.20/scripts/mkCconstants	2007-02-16 15:33:51.696900750 +0100
> @@ -0,0 +1,50 @@
> +#!/bin/sh
> +
> +# Input file, where values of interest are stored is produced by
> +# `cmd_cc_s_c'. It yields calculation of constants, needed in
> +# assembler modules. Output is a suitable header file.
> +#
> +# $1 - input filename;
> +# $2 - output filename;
> +# $3 - header file format: "normal" (default), "mips".
> +
> +set -e
> +
> +[ -z "$1" ] || [ -z "$2" ] && exit 1
> +
> +case $3 in
> +    mips)
> +	SED_SCRIPT='
> +/^@@@/{
> +s/^@@@//;
> +s/ \#.*\$//;
> +p;
> +}'
> +	;;
> +    normal | *)
> +	SED_SCRIPT='
> +/^->/{
> +s:^->\([^ ]*\) [\$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:;
> +s:->::;
> +p;
> +}'
> +	;;
> +esac
> +
> +cat << "EOF"  > $2
> +#ifndef __ASM_OFFSETS_H__
> +#define __ASM_OFFSETS_H__
> +
> +/*
> + * This file was generated by scripts/mkCconstants
> + */
> +
> +EOF
> +
> +sed -ne "$SED_SCRIPT" $1 >> $2
> +
> +cat << "EOF" >> $2
> +
> +#endif
> +
> +EOF
> 
> --
> -o--=O`C  info emacs : not found
>  #oo'L O  info make  : not found
> <___=E M  man gcc    : not found
-
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