118 lines
3.8 KiB
Perl
Executable File
118 lines
3.8 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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use strict;
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use warnings;
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my $offsets = {};
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my $defaults = {};
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my $structures = {};
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my $structure = "";
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while ( <> ) {
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chomp;
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if ( /^\#define (\S+)_OFFS (\S+)$/ ) {
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$structure = $1;
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$offsets->{$structure} = $2;
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} elsif ( /^\#define ${structure}_DEF (\S+)$/ ) {
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$defaults->{$structure} = $1;
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} elsif ( /^\#define ${structure}_(\S+)_LSB (\S+)$/ ) {
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$structures->{$structure}->{$1}->{LSB} = $2;
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} elsif ( /^\#define ${structure}_(\S+)_MSB (\S+)$/ ) {
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$structures->{$structure}->{$1}->{MSB} = $2;
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} elsif ( /^\#define ${structure}_(\S+)_RMASK (\S+)$/ ) {
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$structures->{$structure}->{$1}->{RMASK} = $2;
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} elsif ( /^\s*$/ ) {
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# Do nothing
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} else {
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print "$_\n";
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}
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}
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my $data = [ map { { name => $_, offset => $offsets->{$_},
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default => $defaults->{$_} }; }
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sort { hex ( $offsets->{$a} ) <=> hex ( $offsets->{$b} ) }
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keys %$offsets ];
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foreach my $datum ( @$data ) {
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next unless exists $structures->{$datum->{name}};
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$structure = $structures->{$datum->{name}};
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my $fields = [ map { { name => $_, lsb => $structure->{$_}->{LSB},
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msb => $structure->{$_}->{MSB},
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rmask => $structure->{$_}->{RMASK} }; }
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sort { hex ( $structure->{$a}->{LSB} ) <=>
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hex ( $structure->{$b}->{LSB} ) }
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keys %$structure ];
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$datum->{fields} = $fields;
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}
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print "\n/* This file has been further processed by $0 */\n\n";
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print "FILE_LICENCE ( GPL2_ONLY );\n\n";
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foreach my $datum ( @$data ) {
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printf "#define %s_offset 0x%08xUL\n",
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$datum->{name}, hex ( $datum->{offset} );
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if ( exists $datum->{fields} ) {
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my $lsb = 0;
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my $reserved_idx = 0;
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printf "struct %s_pb {\n", $datum->{name};
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foreach my $field ( @{$datum->{fields}} ) {
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my $pad_width = ( hex ( $field->{lsb} ) - $lsb );
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die "Inconsistent LSB/RMASK in $datum->{name} before $field->{name}\n"
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if $pad_width < 0;
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printf "\tpseudo_bit_t _unused_%u[%u];\n", $reserved_idx++, $pad_width
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if $pad_width;
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$lsb += $pad_width;
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# Damn Perl can't cope with 64-bit hex constants
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my $width = 0;
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die "Missing RMASK in $datum->{name}.$field->{name}\n"
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unless defined $field->{rmask};
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my $rmask = $field->{rmask};
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while ( $rmask =~ /^(0x.+)f$/i ) {
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$width += 4;
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$rmask = $1;
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}
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$rmask = hex ( $rmask );
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while ( $rmask ) {
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$width++;
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$rmask >>= 1;
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}
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if ( defined $field->{msb} ) {
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my $msb_width = ( hex ( $field->{msb} ) - $lsb + 1 );
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$width ||= $msb_width;
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die "Inconsistent LSB/MSB/RMASK in $datum->{name}.$field->{name}\n"
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unless $width == $msb_width;
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}
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printf "\tpseudo_bit_t %s[%u];\n", $field->{name}, $width;
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$lsb += $width;
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}
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my $pad_width = ( 64 - $lsb );
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die "Inconsistent LSB/RMASK in $datum->{name} final field\n"
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if $pad_width < 0;
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printf "\tpseudo_bit_t _unused_%u[%u];\n", $reserved_idx++, $pad_width
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if $pad_width;
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printf "};\n";
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printf "struct %s {\n\tPSEUDO_BIT_STRUCT ( struct %s_pb );\n};\n",
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$datum->{name}, $datum->{name};
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}
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printf "/* Default value: %s */\n", $datum->{default}
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if defined $datum->{default};
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print "\n";
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}
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