#!/usr/bin/perl
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#!/usr/bin/perl
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# Preprocessing of the spec file.
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# Preprocessing of the spec file.
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# So far the table with the instruction list is modified.
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# So far the table with the instruction list is modified.
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# Output is printed to stdout.
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# Output is printed to stdout.
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use warnings;
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use warnings;
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use strict;
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use strict;
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use POSIX qw (ceil);
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use POSIX qw (ceil);
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if (@ARGV != 1) {
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if (@ARGV != 1) {
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print "Usage: preprocess.pl infile ('-' for stdin)\n";
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print "Usage: preprocess.pl infile ('-' for stdin)\n";
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exit 1;
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exit 1;
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}
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}
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my $infile = $ARGV[0];
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my $infile = $ARGV[0];
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if ($infile eq '-') {
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if ($infile eq '-') {
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open(INPUT, '<-') or die $!;
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open(INPUT, '<-') or die $!;
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} else {
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} else {
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open(INPUT, '<', $infile) or die $!;
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open(INPUT, '<', $infile) or die $!;
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}
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}
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my @inst_table;
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my @inst_table;
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my $insts_per_col = 18;
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my $insts_per_col = 18;
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my $inst_line = 0;
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my $inst_line = 0;
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my $inst_header;
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my $inst_header;
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my $inst_footer;
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my $inst_footer;
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while (<INPUT>) {
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while (<INPUT>) {
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if (/^\| Instruction mnemonic/../^\|==/) {
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if (/^\| Instruction mnemonic/../^\|==/) {
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chomp;
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chomp;
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if (/^\| Instruction mnemonic/) {
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if (/^\| Instruction mnemonic/) {
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$inst_header = $_;
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$inst_header = $_;
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next;
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next;
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} elsif (/^\|==/) {
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} elsif (/^\|==/) {
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$inst_footer = $_;
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$inst_footer = $_;
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next;
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next;
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}
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}
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if ($inst_line < $insts_per_col) {
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if ($inst_line < $insts_per_col) {
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push @inst_table, $_;
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push @inst_table, $_;
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} else {
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} else {
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$inst_table[$inst_line % $insts_per_col] .= "\t" . $_;
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$inst_table[$inst_line % $insts_per_col] .= "\t" . $_;
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}
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}
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$inst_line++;
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$inst_line++;
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} else {
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} else {
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if (@inst_table) {
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if (@inst_table) {
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# complete the rows that have their last column empty
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# complete the rows that have their last column empty
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for (my $i = $inst_line % $insts_per_col; $i < $insts_per_col; $i++) {
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for (my $i = $inst_line % $insts_per_col; $i < $insts_per_col; $i++) {
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$inst_table[$i] .= "\t|\t|";
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$inst_table[$i] .= "\t|\t|";
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}
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}
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my $cols = ceil($inst_line / $insts_per_col);
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my $cols = ceil($inst_line / $insts_per_col);
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print $inst_header x $cols . "\n";
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print $inst_header x $cols . "\n";
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print join("\n", @inst_table) . "\n";
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print join("\n", @inst_table) . "\n";
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print $inst_footer . "\n";
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print $inst_footer . "\n";
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@inst_table = ();
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@inst_table = ();
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}
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}
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print $_;
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print $_;
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}
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}
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}
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}
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close INPUT or die $!;
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close INPUT or die $!;
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