vendor/github.com/fsouza/go-dockerclient/external/golang.org/x/sys/unix/mksysnum_linux.pl

   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 use strict;
   7
   8 if($ENV{'GOARCH'} eq "" || $ENV{'GOOS'} eq "") {
   9         print STDERR "GOARCH or GOOS not defined in environment\n";
  10         exit 1;
  11 }
  12
  13 my $command = "mksysnum_linux.pl ". join(' ', @ARGV);
  14
  15 print <<EOF;
  16 // $command
  17 // MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
  18
  19 // +build $ENV{'GOARCH'},$ENV{'GOOS'}
  20
  21 package unix
  22
  23 const(
  24 EOF
  25
  26 sub fmt {
  27         my ($name, $num) = @_;
  28         if($num > 999){
  29                 # ignore deprecated syscalls that are no longer implemented
  30                 # https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/uapi/asm-generic/unistd.h?id=refs/heads/master#n716
  31                 return;
  32         }
  33         $name =~ y/a-z/A-Z/;
  34         print " SYS_$name = $num;\n";
  35 }
  36
  37 my $prev;
  38 open(GCC, "gcc -E -dD $ARGV[0] |") || die "can't run gcc";
  39 while(<GCC>){
  40         if(/^#define __NR_syscalls\s+/) {
  41                 # ignore redefinitions of __NR_syscalls
  42         }
  43         elsif(/^#define __NR_(\w+)\s+([0-9]+)/){
  44                 $prev = $2;
  45                 fmt($1, $2);
  46         }
  47         elsif(/^#define __NR3264_(\w+)\s+([0-9]+)/){
  48                 $prev = $2;
  49                 fmt($1, $2);
  50         }
  51         elsif(/^#define __NR_(\w+)\s+\(\w+\+\s*([0-9]+)\)/){
  52                 fmt($1, $prev+$2)
  53         }
  54 }
  55
  56 print <<EOF;
  57 )
  58 EOF