--- a/vendor/golang.org/x/sys/unix/mksyscall_solaris.pl Wed Sep 18 19:17:42 2019 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,289 +0,0 @@
-#!/usr/bin/env perl
-# Copyright 2009 The Go Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file.
-
-# This program reads a file containing function prototypes
-# (like syscall_solaris.go) and generates system call bodies.
-# The prototypes are marked by lines beginning with "//sys"
-# and read like func declarations if //sys is replaced by func, but:
-# * The parameter lists must give a name for each argument.
-# This includes return parameters.
-# * The parameter lists must give a type for each argument:
-# the (x, y, z int) shorthand is not allowed.
-# * If the return parameter is an error number, it must be named err.
-# * If go func name needs to be different than its libc name,
-# * or the function is not in libc, name could be specified
-# * at the end, after "=" sign, like
-# //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
-
-use strict;
-
-my $cmdline = "mksyscall_solaris.pl " . join(' ', @ARGV);
-my $errors = 0;
-my $_32bit = "";
-my $tags = ""; # build tags
-
-binmode STDOUT;
-
-if($ARGV[0] eq "-b32") {
- $_32bit = "big-endian";
- shift;
-} elsif($ARGV[0] eq "-l32") {
- $_32bit = "little-endian";
- shift;
-}
-if($ARGV[0] eq "-tags") {
- shift;
- $tags = $ARGV[0];
- shift;
-}
-
-if($ARGV[0] =~ /^-/) {
- print STDERR "usage: mksyscall_solaris.pl [-b32 | -l32] [-tags x,y] [file ...]\n";
- exit 1;
-}
-
-sub parseparamlist($) {
- my ($list) = @_;
- $list =~ s/^\s*//;
- $list =~ s/\s*$//;
- if($list eq "") {
- return ();
- }
- return split(/\s*,\s*/, $list);
-}
-
-sub parseparam($) {
- my ($p) = @_;
- if($p !~ /^(\S*) (\S*)$/) {
- print STDERR "$ARGV:$.: malformed parameter: $p\n";
- $errors = 1;
- return ("xx", "int");
- }
- return ($1, $2);
-}
-
-my $package = "";
-my $text = "";
-my $dynimports = "";
-my $linknames = "";
-my @vars = ();
-while(<>) {
- chomp;
- s/\s+/ /g;
- s/^\s+//;
- s/\s+$//;
- $package = $1 if !$package && /^package (\S+)$/;
- my $nonblock = /^\/\/sysnb /;
- next if !/^\/\/sys / && !$nonblock;
-
- # Line must be of the form
- # func Open(path string, mode int, perm int) (fd int, err error)
- # Split into name, in params, out params.
- if(!/^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$/) {
- print STDERR "$ARGV:$.: malformed //sys declaration\n";
- $errors = 1;
- next;
- }
- my ($nb, $func, $in, $out, $modname, $sysname) = ($1, $2, $3, $4, $5, $6);
-
- # Split argument lists on comma.
- my @in = parseparamlist($in);
- my @out = parseparamlist($out);
-
- # So file name.
- if($modname eq "") {
- $modname = "libc";
- }
-
- # System call name.
- if($sysname eq "") {
- $sysname = "$func";
- }
-
- # System call pointer variable name.
- my $sysvarname = "proc$sysname";
-
- my $strconvfunc = "BytePtrFromString";
- my $strconvtype = "*byte";
-
- $sysname =~ y/A-Z/a-z/; # All libc functions are lowercase.
-
- # Runtime import of function to allow cross-platform builds.
- $dynimports .= "//go:cgo_import_dynamic libc_${sysname} ${sysname} \"$modname.so\"\n";
- # Link symbol to proc address variable.
- $linknames .= "//go:linkname ${sysvarname} libc_${sysname}\n";
- # Library proc address variable.
- push @vars, $sysvarname;
-
- # Go function header.
- $out = join(', ', @out);
- if($out ne "") {
- $out = " ($out)";
- }
- if($text ne "") {
- $text .= "\n"
- }
- $text .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out;
-
- # Check if err return available
- my $errvar = "";
- foreach my $p (@out) {
- my ($name, $type) = parseparam($p);
- if($type eq "error") {
- $errvar = $name;
- last;
- }
- }
-
- # Prepare arguments to Syscall.
- my @args = ();
- my $n = 0;
- foreach my $p (@in) {
- my ($name, $type) = parseparam($p);
- if($type =~ /^\*/) {
- push @args, "uintptr(unsafe.Pointer($name))";
- } elsif($type eq "string" && $errvar ne "") {
- $text .= "\tvar _p$n $strconvtype\n";
- $text .= "\t_p$n, $errvar = $strconvfunc($name)\n";
- $text .= "\tif $errvar != nil {\n\t\treturn\n\t}\n";
- push @args, "uintptr(unsafe.Pointer(_p$n))";
- $n++;
- } elsif($type eq "string") {
- print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n";
- $text .= "\tvar _p$n $strconvtype\n";
- $text .= "\t_p$n, _ = $strconvfunc($name)\n";
- push @args, "uintptr(unsafe.Pointer(_p$n))";
- $n++;
- } elsif($type =~ /^\[\](.*)/) {
- # Convert slice into pointer, length.
- # Have to be careful not to take address of &a[0] if len == 0:
- # pass nil in that case.
- $text .= "\tvar _p$n *$1\n";
- $text .= "\tif len($name) > 0 {\n\t\t_p$n = \&$name\[0]\n\t}\n";
- push @args, "uintptr(unsafe.Pointer(_p$n))", "uintptr(len($name))";
- $n++;
- } elsif($type eq "int64" && $_32bit ne "") {
- if($_32bit eq "big-endian") {
- push @args, "uintptr($name >> 32)", "uintptr($name)";
- } else {
- push @args, "uintptr($name)", "uintptr($name >> 32)";
- }
- } elsif($type eq "bool") {
- $text .= "\tvar _p$n uint32\n";
- $text .= "\tif $name {\n\t\t_p$n = 1\n\t} else {\n\t\t_p$n = 0\n\t}\n";
- push @args, "uintptr(_p$n)";
- $n++;
- } else {
- push @args, "uintptr($name)";
- }
- }
- my $nargs = @args;
-
- # Determine which form to use; pad args with zeros.
- my $asm = "sysvicall6";
- if ($nonblock) {
- $asm = "rawSysvicall6";
- }
- if(@args <= 6) {
- while(@args < 6) {
- push @args, "0";
- }
- } else {
- print STDERR "$ARGV:$.: too many arguments to system call\n";
- }
-
- # Actual call.
- my $args = join(', ', @args);
- my $call = "$asm(uintptr(unsafe.Pointer(&$sysvarname)), $nargs, $args)";
-
- # Assign return values.
- my $body = "";
- my $failexpr = "";
- my @ret = ("_", "_", "_");
- my @pout= ();
- my $do_errno = 0;
- for(my $i=0; $i<@out; $i++) {
- my $p = $out[$i];
- my ($name, $type) = parseparam($p);
- my $reg = "";
- if($name eq "err") {
- $reg = "e1";
- $ret[2] = $reg;
- $do_errno = 1;
- } else {
- $reg = sprintf("r%d", $i);
- $ret[$i] = $reg;
- }
- if($type eq "bool") {
- $reg = "$reg != 0";
- }
- if($type eq "int64" && $_32bit ne "") {
- # 64-bit number in r1:r0 or r0:r1.
- if($i+2 > @out) {
- print STDERR "$ARGV:$.: not enough registers for int64 return\n";
- }
- if($_32bit eq "big-endian") {
- $reg = sprintf("int64(r%d)<<32 | int64(r%d)", $i, $i+1);
- } else {
- $reg = sprintf("int64(r%d)<<32 | int64(r%d)", $i+1, $i);
- }
- $ret[$i] = sprintf("r%d", $i);
- $ret[$i+1] = sprintf("r%d", $i+1);
- }
- if($reg ne "e1") {
- $body .= "\t$name = $type($reg)\n";
- }
- }
- if ($ret[0] eq "_" && $ret[1] eq "_" && $ret[2] eq "_") {
- $text .= "\t$call\n";
- } else {
- $text .= "\t$ret[0], $ret[1], $ret[2] := $call\n";
- }
- $text .= $body;
-
- if ($do_errno) {
- $text .= "\tif e1 != 0 {\n";
- $text .= "\t\terr = e1\n";
- $text .= "\t}\n";
- }
- $text .= "\treturn\n";
- $text .= "}\n";
-}
-
-if($errors) {
- exit 1;
-}
-
-print <<EOF;
-// $cmdline
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build $tags
-
-package $package
-
-import (
- "syscall"
- "unsafe"
-)
-EOF
-
-print "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";
-
-my $vardecls = "\t" . join(",\n\t", @vars);
-$vardecls .= " syscallFunc";
-
-chomp($_=<<EOF);
-
-$dynimports
-$linknames
-var (
-$vardecls
-)
-
-$text
-EOF
-print $_;
-exit 0;