Improve kernel bootstrapping:

o  Use objdump instead of gensetdefs(1) to build the linker sets.
o  Allow overriding of nm and objdump in resp. genassym.sh and
   gensetdefs.pl for non-native toolchains.

Reviewed by: arch
Perl improvements: Jos Backus <josb@cncdsl.com>, benno

sys/conf/Makefile.alpha

@@ -177,7 +177,7 @@ setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
 setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
-	@gensetdefs ${OBJS}
+	@perl5 $S/kern/gensetdefs.pl ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s

sys/conf/Makefile.i386

@@ -182,7 +182,7 @@ setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
 setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
-	@gensetdefs ${OBJS}
+	@perl5 $S/kern/gensetdefs.pl ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s

sys/conf/Makefile.ia64

@@ -20,8 +20,10 @@ CWARNFLAGS=	-Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
 		-ansi
 CC=		ia64-unknown-linux-gcc -D__FreeBSD__ -U__linux__
 LD=		ia64-unknown-linux-ld
+NM=		ia64-unknown-linux-nm
 SIZE=		ia64-unknown-linux-size
 OBJCOPY=	ia64-unknown-linux-objcopy
+OBJDUMP=	ia64-unknown-linux-objdump
 MACHINE_ARCH=	ia64
 
 # Which version of config(8) is required.
@@ -184,13 +186,13 @@ setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
 setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
-	@gensetdefs ${OBJS}
+	@OBJDUMP=${OBJDUMP} perl5 $S/kern/gensetdefs.pl ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s
 
-assym.s: $S/$M/$M/genassym.sh genassym.o
-	sh $S/$M/$M/genassym.sh genassym.o > ${.TARGET}
+assym.s: $S/kern/genassym.sh genassym.o
+	NM=${NM} sh $S/kern/genassym.sh genassym.o > ${.TARGET}
 
 genassym.o: $S/$M/$M/genassym.c
 	${CC} -c ${CFLAGS} $S/$M/$M/genassym.c

sys/conf/Makefile.pc98

@@ -184,7 +184,7 @@ setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
 setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
-	@gensetdefs ${OBJS}
+	@perl5 $S/kern/gensetdefs.pl ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s

sys/conf/Makefile.powerpc

@@ -182,7 +182,7 @@ setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
 setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
-	@gensetdefs ${OBJS}
+	@perl5 $S/kern/gensetdefs.pl ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s

sys/conf/kmod.mk

@@ -131,7 +131,7 @@ PROG=	${KMOD}.ko
 
 ${PROG}: ${KMOD}.kld
 .if ${OBJFORMAT} == elf
-	gensetdefs ${KMOD}.kld
+	perl5 @/kern/gensetdefs.pl ${KMOD}.kld
 	${CC} ${CFLAGS} -c setdef0.c
 	${CC} ${CFLAGS} -c setdef1.c
 	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} setdef0.o ${KMOD}.kld setdef1.o

sys/ia64/ia64/genassym.sh

@@ -1,53 +0,0 @@
-#!/bin/sh
-# $FreeBSD$
-
-# Grrr, this should use stdin and stdout, but is encrufted for compatibility.
-
-usage() {
-	echo "usage: genassym [-o outfile] objfile"
-	exit 1
-}
-
-outfile=/dev/stdout
-while getopts "o:" option
-do
-	case "$option" in
-	o)	outfile="$OPTARG";;
-	*)	usage;;
-	esac
-done
-shift $(($OPTIND - 1))
-case $# in
-1)	;;
-*)	usage;;
-esac
-
-ia64-unknown-linux-nm "$1" | awk '
-/ C .*sign$/ {
-	sign = substr($1, length($1) - 3, 4)
-	sub("^0*", "", sign)
-	if (sign != "")
-		sign = "-"
-}
-/ C .*w0$/ {
-	w0 = substr($1, length($1) - 3, 4)
-}
-/ C .*w1$/ {
-	w1 = substr($1, length($1) - 3, 4)
-}
-/ C .*w2$/ {
-	w2 = substr($1, length($1) - 3, 4)
-}
-/ C .*w3$/ {
-	w3 = substr($1, length($1) - 3, 4)
-	w = w3 w2 w1 w0
-	sub("^0*", "", w)
-	if (w == "")
-		w = "0"
-	sub("w3$", "", $3)
-	# This still has minor problems representing INT_MIN, etc.  E.g.,
-	# with 32-bit 2''s complement ints, this prints -0x80000000, which 
-	# has the wrong type (unsigned int).
-	printf("#define\t%s\t%s0x%s\n", $3, sign, w)
-}
-' 3>"$outfile" >&3 3>&-

sys/kern/genassym.sh

@@ -22,7 +22,7 @@ case $# in
 *)	usage;;
 esac
 
-nm "$1" | awk '
+${NM:='nm'} "$1" | awk '
 / C .*sign$/ {
 	sign = substr($1, length($1) - 3, 4)
 	sub("^0*", "", sign)

sys/kern/gensetdefs.pl

@@ -0,0 +1,105 @@
+#!/usr/bin/perl -w
+#
+# Copyright (c) 2001  The FreeBSD Project
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# From src/usr.bin/gensetdefs/gensetdefs.c,v 1.6 2000/09/29 13:29:43 dfr
+#
+# $FreeBSD$
+
+use strict;
+
+my %sets = ();
+my $pointersize = 0;
+my $objdump = $ENV{'OBJDUMP'} || 'objdump';
+
+# Run objdump over each object file to find all defined linker sets.
+# Linker sets are sections with names starting with `.set.'
+foreach my $objfile (@ARGV) {
+    open(SECTION, "$objdump -h $objfile |") or die;
+    while (<SECTION>) {
+        my ($index, $name, $size, $vma, $lma, $offset, $align) = split;
+
+        next unless $name;
+
+        if ($name =~ /^.set./) {
+            $name =~ s/^.set.//;
+	    $sets{$name} ||= 0;
+            $sets{$name} += hex "0x$size";
+
+	    # Assume the size of a pointer is equal to it's alignment
+	    # and thus the alignment of the section.
+            if ($pointersize < eval $align) {
+            	$pointersize = eval $align;
+            }
+        }
+    }
+    close SECTION;
+}
+
+# Generate our list of set definitions
+my @setdefs;
+while (my ($name, $size) = each %sets) {
+    my $elements = $size / $pointersize;
+    push @setdefs, "DEFINE_SET($name, $elements);\n";
+}
+
+# Create setdefs.h
+open(SETDEFS_H, "> setdefs.h") or die;
+print SETDEFS_H sort @setdefs;
+close SETDEFS_H;
+
+# Create setdef0.c
+open(SETDEF0_C, "> setdef0.c") or die;
+print SETDEF0_C <<END;
+/* This file is generated by $0, 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"
+END
+close SETDEF0_C;
+
+# Create setdef1.c
+open(SETDEF1_C, "> setdef1.c") or die;
+print SETDEF1_C <<END;
+/* This file is generated by $0, do not edit. */
+
+#define DEFINE_SET(set, count)			\\
+__asm__(".section .set." #set ",\\"aw\\"");	\\
+__asm__(".quad 0");				\\
+__asm__(".previous")
+
+#include "setdefs.h"
+END
+close SETDEF1_C;
+
+exit;