github.com/aayushi-bansal/sys@v0.0.0-20180118120756-90d962a959d8/unix/mksysnum_freebsd.pl (about)

     1  #!/usr/bin/env perl
     2  # Copyright 2009 The Go Authors. All rights reserved.
     3  # Use of this source code is governed by a BSD-style
     4  # license that can be found in the LICENSE file.
     5  #
     6  # Generate system call table for FreeBSD from master list
     7  # (for example, /usr/src/sys/kern/syscalls.master).
     8  
     9  use strict;
    10  
    11  if($ENV{'GOARCH'} eq "" || $ENV{'GOOS'} eq "") {
    12  	print STDERR "GOARCH or GOOS not defined in environment\n";
    13  	exit 1;
    14  }
    15  
    16  my $command = "mksysnum_freebsd.pl " . join(' ', @ARGV);
    17  
    18  print <<EOF;
    19  // $command
    20  // Code generated by the command above; see README.md. DO NOT EDIT.
    21  
    22  // +build $ENV{'GOARCH'},$ENV{'GOOS'}
    23  
    24  package unix
    25  
    26  const (
    27  EOF
    28  
    29  while(<>){
    30  	if(/^([0-9]+)\s+\S+\s+STD\s+({ \S+\s+(\w+).*)$/){
    31  		my $num = $1;
    32  		my $proto = $2;
    33  		my $name = "SYS_$3";
    34  		$name =~ y/a-z/A-Z/;
    35  
    36  		# There are multiple entries for enosys and nosys, so comment them out.
    37  		if($name =~ /^SYS_E?NOSYS$/){
    38  			$name = "// $name";
    39  		}
    40  		if($name eq 'SYS_SYS_EXIT'){
    41  			$name = 'SYS_EXIT';
    42  		}
    43  
    44  		print "	$name = $num;  // $proto\n";
    45  	}
    46  }
    47  
    48  print <<EOF;
    49  )
    50  EOF