mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-25 14:28:54 -04:00
57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
323 lines
8.0 KiB
Perl
Executable File
323 lines
8.0 KiB
Perl
Executable File
#!/usr/bin/env perl
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#
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#//===----------------------------------------------------------------------===//
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#//
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#// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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#// See https://llvm.org/LICENSE.txt for license information.
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#// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#//
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#//===----------------------------------------------------------------------===//
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#
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# Some pragmas.
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use strict; # Restrict unsafe constructs.
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use warnings; # Enable all warnings.
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use FindBin;
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use lib "$FindBin::Bin/lib";
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use tools;
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our $VERSION = "0.004";
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#
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# Subroutines.
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#
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sub parse_input($\%) {
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my ( $input, $defs ) = @_;
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my @bulk = read_file( $input );
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my %entries;
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my %ordinals;
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my @dirs;
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my $value = 1;
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my $error =
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sub {
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my ( $msg, $l, $line ) = @_;
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runtime_error(
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"Error parsing file \"$input\" line $l:\n" .
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" $line" .
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( $msg ? $msg . "\n" : () )
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);
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}; # sub
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my $n = 0; # Line number.
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foreach my $line ( @bulk ) {
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++ $n;
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if ( 0 ) {
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} elsif ( $line =~ m{^\s*(?:#|\n)} ) {
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# Empty line or comment. Skip it.
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} elsif ( $line =~ m{^\s*%} ) {
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# A directive.
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if ( 0 ) {
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} elsif ( $line =~ m{^\s*%\s*if(n)?def\s+([A-Za-z0-9_]+)\s*(?:#|\n)} ) {
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my ( $negation, $name ) = ( $1, $2 );
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my $dir = { n => $n, line => $line, name => $name, value => $value };
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push( @dirs, $dir );
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$value = ( $value and ( $negation xor $defs->{ $name } ) );
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} elsif ( $line =~ m{^\s*%\s*endif\s*(?:#|\n)} ) {
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if ( not @dirs ) {
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$error->( "Orphan %endif directive.", $n, $line );
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}; # if
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my $dir = pop( @dirs );
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$value = $dir->{ value };
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} else {
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$error->( "Bad directive.", $n, $line );
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}; # if
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} elsif ( $line =~ m{^\s*(-)?\s*([A-Za-z0-9_]+)(?:\s+(\d+|DATA))?\s*(?:#|\n)} ) {
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my ( $obsolete, $entry, $ordinal ) = ( $1, $2, $3 );
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if ( $value ) {
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if ( exists( $entries{ $entry } ) ) {
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$error->( "Entry \"$entry\" has already been specified.", $n, $line );
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}; # if
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$entries{ $entry } = { ordinal => $ordinal, obsolete => defined( $obsolete ) };
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if ( defined( $ordinal ) and $ordinal ne "DATA" ) {
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if ( $ordinal >= 1000 and $entry =~ m{\A[ok]mp_} ) {
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$error->( "Ordinal of user-callable entry must be < 1000", $n, $line );
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}; # if
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if ( $ordinal >= 1000 and $ordinal < 2000 ) {
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$error->( "Ordinals between 1000 and 1999 are reserved.", $n, $line );
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}; # if
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if ( exists( $ordinals{ $ordinal } ) ) {
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$error->( "Ordinal $ordinal has already been used.", $n, $line );
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}; # if
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$ordinals{ $ordinal } = $entry;
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}; # if
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}; # if
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} else {
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$error->( "", $n, $line );
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}; # if
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}; # foreach
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if ( @dirs ) {
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my $dir = pop( @dirs );
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$error->( "Unterminated %if direcive.", $dir->{ n }, $dir->{ line } );
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}; # while
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return %entries;
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}; # sub parse_input
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sub process(\%) {
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my ( $entries ) = @_;
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foreach my $entry ( keys( %$entries ) ) {
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if ( not $entries->{ $entry }->{ obsolete } ) {
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my $ordinal = $entries->{ $entry }->{ ordinal };
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if ( $entry =~ m{\A[ok]mp_} ) {
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if ( not defined( $ordinal ) ) {
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runtime_error(
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"Bad entry \"$entry\": ordinal number is not specified."
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);
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}; # if
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if ( $ordinal ne "DATA" ) {
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$entries->{ uc( $entry ) } = { ordinal => 1000 + $ordinal };
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}
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}; # if
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}; # if
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}; # foreach
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return %$entries;
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}; # sub process
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sub generate_output(\%$) {
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my ( $entries, $output ) = @_;
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my $bulk;
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$bulk = "EXPORTS\n";
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foreach my $entry ( sort( keys( %$entries ) ) ) {
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if ( not $entries->{ $entry }->{ obsolete } ) {
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$bulk .= sprintf( " %-40s ", $entry );
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my $ordinal = $entries->{ $entry }->{ ordinal };
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if ( defined( $ordinal ) ) {
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if ( $ordinal eq "DATA" ) {
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$bulk .= "DATA";
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} else {
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$bulk .= "\@" . $ordinal;
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}; # if
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}; # if
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$bulk .= "\n";
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}; # if
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}; # foreach
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if ( defined( $output ) ) {
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write_file( $output, \$bulk );
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} else {
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print( $bulk );
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}; # if
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}; # sub generate_ouput
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#
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# Parse command line.
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#
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my $input; # The name of input file.
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my $output; # The name of output file.
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my %defs;
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get_options(
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"output=s" => \$output,
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"D|define=s" =>
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sub {
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my ( $opt_name, $opt_value ) = @_;
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my ( $def_name, $def_value );
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if ( $opt_value =~ m{\A(.*?)=(.*)\z} ) {
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( $def_name, $def_value ) = ( $1, $2 );
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} else {
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( $def_name, $def_value ) = ( $opt_value, 1 );
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}; # if
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$defs{ $def_name } = $def_value;
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},
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);
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if ( @ARGV == 0 ) {
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cmdline_error( "Not enough arguments." );
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}; # if
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if ( @ARGV > 1 ) {
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cmdline_error( "Too many arguments." );
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}; # if
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$input = shift( @ARGV );
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#
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# Work.
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#
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my %data = parse_input( $input, %defs );
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%data = process( %data );
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generate_output( %data, $output );
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exit( 0 );
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__END__
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#
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# Embedded documentation.
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#
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=pod
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=head1 NAME
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B<generate-def.pl> -- Generate def file for OpenMP RTL.
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=head1 SYNOPSIS
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B<generate-def.pl> I<OPTION>... I<file>
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=head1 OPTIONS
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=over
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=item B<--define=>I<name>[=I<value>]
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=item B<-D> I<name>[=I<value>]
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Define specified name. If I<value> is omitted, I<name> is defined to 1. If I<value> is 0 or empty,
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name is B<not> defined.
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=item B<--output=>I<file>
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=item B<-o> I<file>
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Specify output file name. If option is not present, result is printed to stdout.
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=item B<--doc>
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=item B<--manual>
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Print full help message and exit.
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=item B<--help>
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Print short help message and exit.
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=item B<--usage>
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Print very short usage message and exit.
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=item B<--verbose>
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Do print informational messages.
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=item B<--version>
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Print version and exit.
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=item B<--quiet>
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Work quiet, do not print informational messages.
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=back
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=head1 ARGUMENTS
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=over
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=item I<file>
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A name of input file.
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=back
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=head1 DESCRIPTION
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The script reads input file, process conditional directives, checks content for consistency, and
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generates ouptput file suitable for linker.
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=head2 Input File Format
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=over
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=item Comments
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# It's a comment.
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Comments start with C<#> symbol and continue to the end of line.
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=item Conditional Directives
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%ifdef name
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%ifndef name
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%endif
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A part of file surrounded by C<%ifdef I<name>> and C<%endif> directives is a conditional part -- it
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has effect only if I<name> is defined in the comman line by B<--define> option. C<%ifndef> is a
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negated version of C<%ifdef> -- conditional part has an effect only if I<name> is B<not> defined.
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Conditional parts may be nested.
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=item Export Definitions
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symbol
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symbol ordinal
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symbol DATA
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Symbols starting with C<omp_> or C<kmp_> must have ordinal specified. They are subjects for special
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processing: each symbol generates two output lines: original one and upper case version. The ordinal
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number of the second is original ordinal increased by 1000.
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=item Obsolete Symbols
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- symbol
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- symbol ordinal
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- symbol DATA
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Obsolete symbols look like export definitions prefixed with minus sign. Obsolete symbols do not
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affect the output, but obsolete symbols and their ordinals cannot be (re)used in export definitions.
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=back
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=head1 EXAMPLES
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$ generate-def.pl -D stub -D USE_TCHECK=0 -o libguide.def dllexport
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=cut
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# end of file #
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