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Date: Tue, 19 Dec 2000 23:05:39 -0800
From: Marcel Moolenaar <marcel@cup.hp.com>
Organization: Hewlett-Packard
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To: arch@FreeBSD.org
Subject: gensetdefs using sh(1),sed(1),grep(1) and awk(1)
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Read and weep :-)

It takes roughly 11 seconds on a 750 Athlon for this script to process
all the object files. Not exactly quick...

I think it can do better if we can avoid the "system()" calls...

-- 
Marcel Moolenaar
  mail: marcel@cup.hp.com / marcel@FreeBSD.org
  tel:  (408) 447-4222
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Content-Type: application/x-sh;
 name="gensetdefs.sh"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="gensetdefs.sh"

#!/bin/sh

#
# Generate setdefs.h
#
(for obj in $*; do
    ${OBJDUMP:=objdump} -h $obj | fgrep '.set.' | sed -e 's/2\*\*/1<</g' | \
      awk '{ printf "%s %s ", $2, system(sprintf("exit $((%s))", $7)); \
	   system(sprintf("echo 16 i %s p | dc", toupper($3))) } \
	  ' | sed -e 's/^.set.//g'
done) | sort | awk 'function emit(name, size, align) \
		    { printf "DEFINE_SET(%s, %d);\n", name, size/align } \
		    BEGIN { name = "" } \
		    END { if (name != "") emit(name, size, align) } \
		    $1 == name { size += $3 } \
		    $1 != name { if (name != "") emit(name, size, align); \
		    name = $1; size = $3; align = $2 } \
		   ' > setdefs.h

#
# generate setdef0.c
#
cat <<EOF > setdef0.c
/* THIS FILE IS GENERATED, DO NOT EDIT. */

#define DEFINE_SET(set, count)                  \\
__asm__(".section .set." #set ",\"aw\"");       \\
__asm__(".globl " #set);                        \\
__asm__(".type " #set ",@object");              \\
__asm__(".p2align 3");                          \\
__asm__(#set ":");                              \\
__asm__(".quad " #count);                       \\
__asm__(".previous")

#include "setdefs.h"
EOF

#
# generate setdef1.c
#
cat <<EOF > setdef1.c
/* THIS FILE IS GENERATED, DO NOT EDIT. */

#define DEFINE_SET(set, count)                  \\
__asm__(".section .set." #set ",\"aw\"");       \\
__asm__(".quad 0");                             \\
__asm__(".previous")

#include "setdefs.h"
EOF

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