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Diffstat (limited to 'vendor/golang.org/x/sys/unix/mksyscall_aix.pl')
-rw-r--r--vendor/golang.org/x/sys/unix/mksyscall_aix.pl385
1 files changed, 385 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_aix.pl b/vendor/golang.org/x/sys/unix/mksyscall_aix.pl
new file mode 100644
index 0000000..c9b3954
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mksyscall_aix.pl
@@ -0,0 +1,385 @@
+#!/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.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 $c_extern = "/*\n#include <stdint.h>\n";
+my @vars = ();
+while(<>) {
+ chomp;
+ s/\s+/ /g;
+ s/^\s+//;
+ s/\s+$//;
+ $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"
+ "syscall"
+)
+
+
+EOF
+
+print "import \"golang.org/x/sys/unix\"\n" if $package ne "unix";
+
+chomp($_=<<EOF);
+
+$text
+EOF
+print $_;
+exit 0;