[github/fretlink/terraform-provider-statuscake.git] / vendor / golang.org / x / sys / unix / mksyscall_aix_ppc.pl

#!/usr/bin/env perl
# Copyright 2018 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_aix.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_aix_ppc.pl " . join(' ', @ARGV);
my $errors = 0;
my $_32bit = "";
my $tags = "";  # build tags
my $aix = 0;
my $solaris = 0;

binmode STDOUT;

if($ARGV[0] eq "-b32") {
	$_32bit = "big-endian";
	shift;
} elsif($ARGV[0] eq "-l32") {
	$_32bit = "little-endian";
	shift;
}
if($ARGV[0] eq "-aix") {
	$aix = 1;
	shift;
}
if($ARGV[0] eq "-tags") {
	shift;
	$tags = $ARGV[0];
	shift;
}

if($ARGV[0] =~ /^-/) {
	print STDERR "usage: mksyscall_aix.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 $c_extern = "/*\n#include <stdint.h>\n#include <stddef.h>\n";
my @vars = ();
while(<>) {
	chomp;
	s/\s+/ /g;
	s/^\s+//;
	s/\s+$//;
	$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);

	$in = join(', ', @in);
	$out = join(', ', @out);

	# Try in vain to keep people from editing this file.
	# The theory is that they jump into the middle of the file
	# without reading the header.
	$text .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n";

	# Check if value return, err return available
	my $errvar = "";
	my $retvar = "";
	my $rettype = "";
	foreach my $p (@out) {
		my ($name, $type) = parseparam($p);
		if($type eq "error") {
			$errvar = $name;
		} else {
			$retvar = $name;
			$rettype = $type;
		}
	}

	# System call name.
	#if($func ne "fcntl") {

	if($sysname eq "") {
		$sysname = "$func";
	}

	$sysname =~ s/([a-z])([A-Z])/${1}_$2/g;
	$sysname =~ y/A-Z/a-z/; # All libc functions are lowercase.

	my $C_rettype = "";
	if($rettype eq "unsafe.Pointer") {
		$C_rettype = "uintptr_t";
	} elsif($rettype eq "uintptr") {
		$C_rettype = "uintptr_t";
	} elsif($rettype =~ /^_/) {
		$C_rettype = "uintptr_t";
	} elsif($rettype eq "int") {
		$C_rettype = "int";
	} elsif($rettype eq "int32") {
		$C_rettype = "int";
	} elsif($rettype eq "int64") {
		$C_rettype = "long long";
	} elsif($rettype eq "uint32") {
		$C_rettype = "unsigned int";
	} elsif($rettype eq "uint64") {
		$C_rettype = "unsigned long long";
	} else {
		$C_rettype = "int";
	}
	if($sysname eq "exit") {
		$C_rettype = "void";
	}

	# Change types to c
	my @c_in = ();
	foreach my $p (@in) {
		my ($name, $type) = parseparam($p);
		if($type =~ /^\*/) {
			push @c_in, "uintptr_t";
			} elsif($type eq "string") {
			push @c_in, "uintptr_t";
		} elsif($type =~ /^\[\](.*)/) {
			push @c_in, "uintptr_t", "size_t";
		} elsif($type eq "unsafe.Pointer") {
			push @c_in, "uintptr_t";
		} elsif($type eq "uintptr") {
			push @c_in, "uintptr_t";
		} elsif($type =~ /^_/) {
			push @c_in, "uintptr_t";
		} elsif($type eq "int") {
			push @c_in, "int";
		} elsif($type eq "int32") {
			push @c_in, "int";
		} elsif($type eq "int64") {
			push @c_in, "long long";
		} elsif($type eq "uint32") {
			push @c_in, "unsigned int";
		} elsif($type eq "uint64") {
			push @c_in, "unsigned long long";
		} else {
			push @c_in, "int";
		}
	}

	if ($func ne "fcntl" && $func ne "FcntlInt" && $func ne "readlen" && $func ne "writelen") {
		# Imports of system calls from libc
		$c_extern .= "$C_rettype $sysname";
		my $c_in = join(', ', @c_in);
		$c_extern .= "($c_in);\n";
	}

	# So file name.
	if($aix) {
		if($modname eq "") {
			$modname = "libc.a/shr_64.o";
		} else {
			print STDERR "$func: only syscall using libc are available\n";
			$errors = 1;
			next;
		}
	}

	my $strconvfunc = "C.CString";
	my $strconvtype = "*byte";

	# Go function header.
	if($out ne "") {
		$out = " ($out)";
	}
	if($text ne "") {
		$text .= "\n"
	}

	$text .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out ;

	# Prepare arguments to call.
	my @args = ();
	my $n = 0;
	my $arg_n = 0;
	foreach my $p (@in) {
		my ($name, $type) = parseparam($p);
		if($type =~ /^\*/) {
			push @args, "C.uintptr_t(uintptr(unsafe.Pointer($name)))";
		} elsif($type eq "string" && $errvar ne "") {
			$text .= "\t_p$n := uintptr(unsafe.Pointer($strconvfunc($name)))\n";
			push @args, "C.uintptr_t(_p$n)";
			$n++;
		} elsif($type eq "string") {
			print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n";
			$text .= "\t_p$n := uintptr(unsafe.Pointer($strconvfunc($name)))\n";
			push @args, "C.uintptr_t(_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, "C.uintptr_t(uintptr(unsafe.Pointer(_p$n)))";
			$n++;
			$text .= "\tvar _p$n int\n";
			$text .= "\t_p$n = len($name)\n";
			push @args, "C.size_t(_p$n)";
			$n++;
		} elsif($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)";
			}
			$n++;
		} elsif($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$n = 0\n\t}\n";
			push @args, "_p$n";
			$n++;
		} elsif($type =~ /^_/) {
			push @args, "C.uintptr_t(uintptr($name))";
		} elsif($type eq "unsafe.Pointer") {
			push @args, "C.uintptr_t(uintptr($name))";
		} elsif($type eq "int") {
			if (($arg_n == 2) && (($func eq "readlen") || ($func eq "writelen"))) {
				push @args, "C.size_t($name)";
			} elsif ($arg_n == 0 && $func eq "fcntl") {
				push @args, "C.uintptr_t($name)";
			} elsif (($arg_n == 2) && (($func eq "fcntl") || ($func eq "FcntlInt"))) {
				push @args, "C.uintptr_t($name)";
			} else {
				push @args, "C.int($name)";
			}
		} elsif($type eq "int32") {
			push @args, "C.int($name)";
		} elsif($type eq "int64") {
			push @args, "C.longlong($name)";
		} elsif($type eq "uint32") {
			push @args, "C.uint($name)";
		} elsif($type eq "uint64") {
			push @args, "C.ulonglong($name)";
		} elsif($type eq "uintptr") {
			push @args, "C.uintptr_t($name)";
		} else {
			push @args, "C.int($name)";
		}
		$arg_n++;
	}
	my $nargs = @args;


	# Determine which form to use; pad args with zeros.
	if ($nonblock) {
	}

	my $args = join(', ', @args);
	my $call = "";
	if ($sysname eq "exit") {
		if ($errvar ne "") {
			$call .= "er :=";
		} else {
			$call .= "";
		}
	}  elsif ($errvar ne "") {
		$call .= "r0,er :=";
	}  elsif ($retvar ne "") {
		$call .= "r0,_ :=";
	}  else {
		$call .= ""
	}
	$call .= "C.$sysname($args)";

	# Assign return values.
	my $body = "";
	my $failexpr = "";

	for(my $i=0; $i<@out; $i++) {
		my $p = $out[$i];
		my ($name, $type) = parseparam($p);
		my $reg = "";
		if($name eq "err") {
			$reg = "e1";
		} else {
			$reg = "r0";
		}
		if($reg ne "e1" ) {
						$body .= "\t$name = $type($reg)\n";
		}
	}

	# verify return
	if ($sysname ne "exit" && $errvar ne "") {
		if ($C_rettype =~ /^uintptr/) {
			$body .= "\tif \(uintptr\(r0\) ==\^uintptr\(0\) && er != nil\) {\n";
			$body .= "\t\t$errvar = er\n";
			$body .= "\t}\n";
		} else {
			$body .= "\tif \(r0 ==-1 && er != nil\) {\n";
			$body .= "\t\t$errvar = er\n";
			$body .= "\t}\n";
		}
	} elsif ($errvar ne "") {
		$body .= "\tif \(er != nil\) {\n";
		$body .= "\t\t$errvar = er\n";
		$body .= "\t}\n";
	}

	$text .= "\t$call\n";
	$text .= $body;

	$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


$c_extern
*/
import "C"
import (
	"unsafe"
)


EOF

print "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";

chomp($_=<<EOF);

$text
EOF
print $_;
exit 0;
Commit	Line	Data
15c0b25d AP	1	#!/usr/bin/env perl
	2	# Copyright 2018 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	# This program reads a file containing function prototypes
	7	# (like syscall_aix.go) and generates system call bodies.
	8	# The prototypes are marked by lines beginning with "//sys"
	9	# and read like func declarations if //sys is replaced by func, but:
	10	# * The parameter lists must give a name for each argument.
	11	# This includes return parameters.
	12	# * The parameter lists must give a type for each argument:
	13	# the (x, y, z int) shorthand is not allowed.
	14	# * If the return parameter is an error number, it must be named err.
	15	# * If go func name needs to be different than its libc name,
	16	# * or the function is not in libc, name could be specified
	17	# * at the end, after "=" sign, like
	18	# //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
	19
	20	use strict;
	21
	22	my $cmdline = "mksyscall_aix_ppc.pl " . join(' ', @ARGV);
	23	my $errors = 0;
	24	my $_32bit = "";
	25	my $tags = ""; # build tags
	26	my $aix = 0;
	27	my $solaris = 0;
	28
	29	binmode STDOUT;
	30
	31	if($ARGV[0] eq "-b32") {
	32	$_32bit = "big-endian";
	33	shift;
	34	} elsif($ARGV[0] eq "-l32") {
	35	$_32bit = "little-endian";
	36	shift;
	37	}
	38	if($ARGV[0] eq "-aix") {
	39	$aix = 1;
	40	shift;
	41	}
	42	if($ARGV[0] eq "-tags") {
	43	shift;
	44	$tags = $ARGV[0];
	45	shift;
	46	}
	47
	48	if($ARGV[0] =~ /^-/) {
	49	print STDERR "usage: mksyscall_aix.pl [-b32 \| -l32] [-tags x,y] [file ...]\n";
	50	exit 1;
	51	}
	52
	53	sub parseparamlist($) {
	54	my ($list) = @_;
	55	$list =~ s/^\s*//;
	56	$list =~ s/\s*$//;
	57	if($list eq "") {
	58	return ();
	59	}
	60	return split(/\s,\s/, $list);
	61	}
	62
	63	sub parseparam($) {
	64	my ($p) = @_;
65	if($p !~ /^(\S) (\S)$/) {
66	print STDERR "$ARGV:$.: malformed parameter: $p\n";
67	$errors = 1;
68	return ("xx", "int");
69	}
70	return ($1, $2);
71	}
72
73	my $package = "";
74	my $text = "";
75	my $c_extern = "/*\n#include <stdint.h>\n#include <stddef.h>\n";
76	my @vars = ();
77	while(<>) {
78	chomp;
79	s/\s+/ /g;
80	s/^\s+//;
81	s/\s+$//;
82	$package = $1 if !$package && /^package (\S+)$/;
83	my $nonblock = /^\/\/sysnb /;
84	next if !/^\/\/sys / && !$nonblock;
85
86	# Line must be of the form
87	# func Open(path string, mode int, perm int) (fd int, err error)
88	# Split into name, in params, out params.
89	if(!/^\/\/sys(nb)? (\w+)\(([^()])\)\s(?:\(([^()]+)\))?\s(?:=\s(?:(\w)\.)?(\w))?$/) {
90	print STDERR "$ARGV:$.: malformed //sys declaration\n";
91	$errors = 1;
92	next;
93	}
94	my ($nb, $func, $in, $out, $modname, $sysname) = ($1, $2, $3, $4, $5, $6);
95
96	# Split argument lists on comma.
97	my @in = parseparamlist($in);
98	my @out = parseparamlist($out);
99
100	$in = join(', ', @in);
101	$out = join(', ', @out);
102
103	# Try in vain to keep people from editing this file.
104	# The theory is that they jump into the middle of the file
105	# without reading the header.
106	$text .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n";
107
108	# Check if value return, err return available
109	my $errvar = "";
110	my $retvar = "";
111	my $rettype = "";
112	foreach my $p (@out) {
113	my ($name, $type) = parseparam($p);
114	if($type eq "error") {
115	$errvar = $name;
116	} else {
117	$retvar = $name;
118	$rettype = $type;
119	}
120	}
121
122	# System call name.
123	#if($func ne "fcntl") {
124
125	if($sysname eq "") {
126	$sysname = "$func";
127	}
128
129	$sysname =~ s/([a-z])([A-Z])/${1}_$2/g;
130	$sysname =~ y/A-Z/a-z/; # All libc functions are lowercase.
131
132	my $C_rettype = "";
133	if($rettype eq "unsafe.Pointer") {
134	$C_rettype = "uintptr_t";
135	} elsif($rettype eq "uintptr") {
136	$C_rettype = "uintptr_t";
137	} elsif($rettype =~ /^_/) {
138	$C_rettype = "uintptr_t";
139	} elsif($rettype eq "int") {
140	$C_rettype = "int";
141	} elsif($rettype eq "int32") {
142	$C_rettype = "int";
143	} elsif($rettype eq "int64") {
144	$C_rettype = "long long";
145	} elsif($rettype eq "uint32") {
146	$C_rettype = "unsigned int";
147	} elsif($rettype eq "uint64") {
148	$C_rettype = "unsigned long long";
149	} else {
150	$C_rettype = "int";
151	}
152	if($sysname eq "exit") {
153	$C_rettype = "void";
154	}
155
156	# Change types to c
157	my @c_in = ();
158	foreach my $p (@in) {
159	my ($name, $type) = parseparam($p);
160	if($type =~ /^\*/) {
161	push @c_in, "uintptr_t";
162	} elsif($type eq "string") {
163	push @c_in, "uintptr_t";
164	} elsif($type =~ /^\[\](.*)/) {
165	push @c_in, "uintptr_t", "size_t";
166	} elsif($type eq "unsafe.Pointer") {
167	push @c_in, "uintptr_t";
168	} elsif($type eq "uintptr") {
169	push @c_in, "uintptr_t";
170	} elsif($type =~ /^_/) {
171	push @c_in, "uintptr_t";
172	} elsif($type eq "int") {
173	push @c_in, "int";
174	} elsif($type eq "int32") {
175	push @c_in, "int";
176	} elsif($type eq "int64") {
177	push @c_in, "long long";
178	} elsif($type eq "uint32") {
179	push @c_in, "unsigned int";
180	} elsif($type eq "uint64") {
181	push @c_in, "unsigned long long";
182	} else {
183	push @c_in, "int";
184	}
185	}
186
187	if ($func ne "fcntl" && $func ne "FcntlInt" && $func ne "readlen" && $func ne "writelen") {
188	# Imports of system calls from libc
189	$c_extern .= "$C_rettype $sysname";
190	my $c_in = join(', ', @c_in);
191	$c_extern .= "($c_in);\n";
192	}
193
194	# So file name.
195	if($aix) {
196	if($modname eq "") {
197	$modname = "libc.a/shr_64.o";
198	} else {
199	print STDERR "$func: only syscall using libc are available\n";
200	$errors = 1;
201	next;
202	}
203	}
204
205	my $strconvfunc = "C.CString";
206	my $strconvtype = "*byte";
207
208	# Go function header.
209	if($out ne "") {
210	$out = " ($out)";
211	}
212	if($text ne "") {
213	$text .= "\n"
214	}
215
216	$text .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out ;
217
218	# Prepare arguments to call.
219	my @args = ();
220	my $n = 0;
221	my $arg_n = 0;
222	foreach my $p (@in) {
223	my ($name, $type) = parseparam($p);
224	if($type =~ /^\*/) {
225	push @args, "C.uintptr_t(uintptr(unsafe.Pointer($name)))";
226	} elsif($type eq "string" && $errvar ne "") {
227	$text .= "\t_p$n := uintptr(unsafe.Pointer($strconvfunc($name)))\n";
228	push @args, "C.uintptr_t(_p$n)";
229	$n++;
230	} elsif($type eq "string") {
231	print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n";
232	$text .= "\t_p$n := uintptr(unsafe.Pointer($strconvfunc($name)))\n";
233	push @args, "C.uintptr_t(_p$n)";
234	$n++;
235	} elsif($type =~ /^\[\](.*)/) {
236	# Convert slice into pointer, length.
237	# Have to be careful not to take address of &a[0] if len == 0:
238	# pass nil in that case.
239	$text .= "\tvar _p$n *$1\n";
240	$text .= "\tif len($name) > 0 {\n\t\t_p$n = \&$name\[0]\n\t}\n";
241	push @args, "C.uintptr_t(uintptr(unsafe.Pointer(_p$n)))";
242	$n++;
243	$text .= "\tvar _p$n int\n";
244	$text .= "\t_p$n = len($name)\n";
245	push @args, "C.size_t(_p$n)";
246	$n++;
247	} elsif($type eq "int64" && $_32bit ne "") {
248	if($_32bit eq "big-endian") {
249	push @args, "uintptr($name >> 32)", "uintptr($name)";
250	} else {
251	push @args, "uintptr($name)", "uintptr($name >> 32)";
252	}
253	$n++;
254	} elsif($type eq "bool") {
255	$text .= "\tvar _p$n uint32\n";
256	$text .= "\tif $name {\n\t\t_p$n = 1\n\t} else {\n\t\t_p$n = 0\n\t}\n";
257	push @args, "_p$n";
258	$n++;
259	} elsif($type =~ /^_/) {
260	push @args, "C.uintptr_t(uintptr($name))";
261	} elsif($type eq "unsafe.Pointer") {
262	push @args, "C.uintptr_t(uintptr($name))";
263	} elsif($type eq "int") {
264	if (($arg_n == 2) && (($func eq "readlen") \|\| ($func eq "writelen"))) {
265	push @args, "C.size_t($name)";
266	} elsif ($arg_n == 0 && $func eq "fcntl") {
267	push @args, "C.uintptr_t($name)";
268	} elsif (($arg_n == 2) && (($func eq "fcntl") \|\| ($func eq "FcntlInt"))) {
269	push @args, "C.uintptr_t($name)";
270	} else {
271	push @args, "C.int($name)";
272	}
273	} elsif($type eq "int32") {
274	push @args, "C.int($name)";
275	} elsif($type eq "int64") {
276	push @args, "C.longlong($name)";
277	} elsif($type eq "uint32") {
278	push @args, "C.uint($name)";
279	} elsif($type eq "uint64") {
280	push @args, "C.ulonglong($name)";
281	} elsif($type eq "uintptr") {
282	push @args, "C.uintptr_t($name)";
283	} else {
284	push @args, "C.int($name)";
285	}
286	$arg_n++;
287	}
288	my $nargs = @args;
289
290
291	# Determine which form to use; pad args with zeros.
292	if ($nonblock) {
293	}
294
295	my $args = join(', ', @args);
296	my $call = "";
297	if ($sysname eq "exit") {
298	if ($errvar ne "") {
299	$call .= "er :=";
300	} else {
301	$call .= "";
302	}
303	} elsif ($errvar ne "") {
304	$call .= "r0,er :=";
305	} elsif ($retvar ne "") {
306	$call .= "r0,_ :=";
307	} else {
308	$call .= ""
309	}
310	$call .= "C.$sysname($args)";
311
312	# Assign return values.
313	my $body = "";
314	my $failexpr = "";
315
316	for(my $i=0; $i<@out; $i++) {
317	my $p = $out[$i];
318	my ($name, $type) = parseparam($p);
319	my $reg = "";
320	if($name eq "err") {
321	$reg = "e1";
322	} else {
323	$reg = "r0";
324	}
325	if($reg ne "e1" ) {
326	$body .= "\t$name = $type($reg)\n";
327	}
328	}
329
330	# verify return
331	if ($sysname ne "exit" && $errvar ne "") {
332	if ($C_rettype =~ /^uintptr/) {
333	$body .= "\tif \(uintptr\(r0\) ==\^uintptr\(0\) && er != nil\) {\n";
334	$body .= "\t\t$errvar = er\n";
335	$body .= "\t}\n";
336	} else {
337	$body .= "\tif \(r0 ==-1 && er != nil\) {\n";
338	$body .= "\t\t$errvar = er\n";
339	$body .= "\t}\n";
340	}
341	} elsif ($errvar ne "") {
342	$body .= "\tif \(er != nil\) {\n";
343	$body .= "\t\t$errvar = er\n";
344	$body .= "\t}\n";
345	}
346
347	$text .= "\t$call\n";
348	$text .= $body;
349
350	$text .= "\treturn\n";
351	$text .= "}\n";
352	}
353
354	if($errors) {
355	exit 1;
356	}
357
358	print <<EOF;
359	// $cmdline
360	// Code generated by the command above; see README.md. DO NOT EDIT.
361
362	// +build $tags
363
364	package $package
365
366
367	$c_extern
368	*/
369	import "C"
370	import (
371	"unsafe"
372	)
373
374
375	EOF
376
377	print "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";
378
379	chomp($_=<<EOF);
380
381	$text
382	EOF
383	print $_;
384	exit 0;