41a168247a
machines (duh!). This was one reason why this script broke on i386. The other being that on i386 sections did not have the proper alignment. This has been fixed in sys/sys/linker_set.h.
108 lines
3.3 KiB
Perl
108 lines
3.3 KiB
Perl
#!/usr/bin/perl -w
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#
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# Copyright (c) 2001 The FreeBSD Project
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# From src/usr.bin/gensetdefs/gensetdefs.c,v 1.6 2000/09/29 13:29:43 dfr
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#
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# $FreeBSD$
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use strict;
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my %logalign = (4 => 2, 8 => 3);
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my %datadecl = (4 => ".long", 8 => ".quad");
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my %sets = ();
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my $pointersize = 0;
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my $objdump = $ENV{'OBJDUMP'} || 'objdump';
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# Run objdump over each object file to find all defined linker sets.
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# Linker sets are sections with names starting with `.set.'
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foreach my $objfile (@ARGV) {
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open(SECTION, "$objdump -h $objfile |") or die;
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while (<SECTION>) {
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my ($index, $name, $size, $vma, $lma, $offset, $align) = split;
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next unless $name;
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if ($name =~ /^.set./) {
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$name =~ s/^.set.//;
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$sets{$name} ||= 0;
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$sets{$name} += hex "0x$size";
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# Assume the size of a pointer is equal to it's alignment
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# and thus the alignment of the section.
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if ($pointersize < eval $align) {
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$pointersize = eval $align;
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}
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}
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}
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close SECTION;
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}
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# Generate our list of set definitions
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my @setdefs;
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while (my ($name, $size) = each %sets) {
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my $elements = $size / $pointersize;
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push @setdefs, "DEFINE_SET($name, $elements);\n";
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}
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# Create setdefs.h
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open(SETDEFS_H, "> setdefs.h") or die;
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print SETDEFS_H sort @setdefs;
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close SETDEFS_H;
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# Create setdef0.c
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open(SETDEF0_C, "> setdef0.c") or die;
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print SETDEF0_C <<END;
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/* This file is generated by $0, do not edit. */
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#define DEFINE_SET(set, count) \\
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__asm__(".section .set." #set ",\\"aw\\""); \\
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__asm__(".globl " #set); \\
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__asm__(".type " #set ",\@object"); \\
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__asm__(".p2align $logalign{$pointersize}"); \\
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__asm__(#set ":"); \\
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__asm__("$datadecl{$pointersize} " #count); \\
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__asm__(".previous")
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#include "setdefs.h"
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END
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close SETDEF0_C;
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# Create setdef1.c
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open(SETDEF1_C, "> setdef1.c") or die;
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print SETDEF1_C <<END;
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/* This file is generated by $0, do not edit. */
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#define DEFINE_SET(set, count) \\
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__asm__(".section .set." #set ",\\"aw\\""); \\
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__asm__("$datadecl{$pointersize} 0"); \\
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__asm__(".previous")
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#include "setdefs.h"
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END
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close SETDEF1_C;
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exit;
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