diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.pl')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.pl | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.pl b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.pl new file mode 100644 index 00000000..c44de8d3 --- /dev/null +++ b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.pl @@ -0,0 +1,384 @@ +#!/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; |