[pp] kbuild: asm-offsets generalized

[Oleg Verych <olecom@flower.upol.cz>]

> > 
> > 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).

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

--
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 #oo'L O  info make  : not found
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