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108 lines
3.5 KiB
Perl
108 lines
3.5 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 "objdump -h $objfile failed : $!";
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while (<SECTION>) {
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my ($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 "Could not write to setdefs.h : $!";
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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 "Could not write to setdef0.c : $!";
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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 "Could not write to setdef1.c : $!";
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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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