diff options
Diffstat (limited to 'go/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.pl')
| -rwxr-xr-x | go/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.pl | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/go/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.pl b/go/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.pl new file mode 100755 index 0000000..53df26b --- /dev/null +++ b/go/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.pl @@ -0,0 +1,579 @@ +#!/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 + +# This program will generate three files and handle both gc and gccgo implementation: +# - zsyscall_aix_ppc64.go: the common part of each implementation (error handler, pointer creation) +# - zsyscall_aix_ppc64_gc.go: gc part with //go_cgo_import_dynamic and a call to syscall6 +# - zsyscall_aix_ppc64_gccgo.go: gccgo part with C function and conversion to C type. + +# The generated code looks like this +# +# zsyscall_aix_ppc64.go +# func asyscall(...) (n int, err error) { +# // Pointer Creation +# r1, e1 := callasyscall(...) +# // Type Conversion +# // Error Handler +# return +# } +# +# zsyscall_aix_ppc64_gc.go +# //go:cgo_import_dynamic libc_asyscall asyscall "libc.a/shr_64.o" +# //go:linkname libc_asyscall libc_asyscall +# var asyscall syscallFunc +# +# func callasyscall(...) (r1 uintptr, e1 Errno) { +# r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_asyscall)), "nb_args", ... ) +# return +# } +# +# zsyscall_aix_ppc64_ggcgo.go +# /* +# int asyscall(...) +# +# */ +# import "C" +# +# func callasyscall(...) (r1 uintptr, e1 Errno) { +# r1 = uintptr(C.asyscall(...)) +# e1 = syscall.GetErrno() +# return +# } + + + +use strict; + +my $cmdline = "mksyscall_aix_ppc64.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 = ""; +# GCCGO +my $textgccgo = ""; +my $c_extern = "/*\n#include <stdint.h>\n"; +# GC +my $textgc = ""; +my $dynimports = ""; +my $linknames = ""; +my @vars = (); +# COMMUN +my $textcommon = ""; + +while(<>) { + chomp; + s/\s+/ /g; + s/^\s+//; + s/\s+$//; + $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); + $out = join(', ', @out); + + if($sysname eq "") { + $sysname = "$func"; + } + + my $onlyCommon = 0; + if ($func eq "readlen" || $func eq "writelen" || $func eq "FcntlInt" || $func eq "FcntlFlock") { + # This function call another syscall which is already implemented. + # Therefore, the gc and gccgo part must not be generated. + $onlyCommon = 1 + } + + # 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. + + $textcommon .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"; + if (!$onlyCommon) { + $textgccgo .= "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"; + $textgc .= "// 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; + } + } + + + $sysname =~ s/([a-z])([A-Z])/${1}_$2/g; + $sysname =~ y/A-Z/a-z/; # All libc functions are lowercase. + + # GCCGO Prototype return type + 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"; + } + + # GCCGO Prototype arguments type + my @c_in = (); + foreach my $i (0 .. $#in) { + my ($name, $type) = parseparam($in[$i]); + if($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") { + if (($i == 0 || $i == 2) && $func eq "fcntl"){ + # These fcntl arguments needs to be uintptr to be able to call FcntlInt and FcntlFlock + push @c_in, "uintptr_t"; + } else { + push @c_in, "int"; + } + } elsif($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($type eq "uint64") { + push @c_in, "unsigned long long"; + } else { + push @c_in, "int"; + } + } + + if (!$onlyCommon){ + # GCCGO Prototype Generation + # Imports of system calls from libc + $c_extern .= "$C_rettype $sysname"; + my $c_in = join(', ', @c_in); + $c_extern .= "($c_in);\n"; + } + + # GC Library name + if($modname eq "") { + $modname = "libc.a/shr_64.o"; + } else { + print STDERR "$func: only syscall using libc are available\n"; + $errors = 1; + next; + } + my $sysvarname = "libc_${sysname}"; + + if (!$onlyCommon){ + # GC Runtime import of function to allow cross-platform builds. + $dynimports .= "//go:cgo_import_dynamic ${sysvarname} ${sysname} \"$modname\"\n"; + # GC Link symbol to proc address variable. + $linknames .= "//go:linkname ${sysvarname} ${sysvarname}\n"; + # GC Library proc address variable. + push @vars, $sysvarname; + } + + my $strconvfunc ="BytePtrFromString"; + my $strconvtype = "*byte"; + + # Go function header. + if($out ne "") { + $out = " ($out)"; + } + if($textcommon ne "") { + $textcommon .= "\n" + } + + $textcommon .= sprintf "func %s(%s)%s {\n", $func, join(', ', @in), $out ; + + # Prepare arguments to call. + my @argscommun = (); # Arguments in the commun part + my @argscall = (); # Arguments for call prototype + my @argsgc = (); # Arguments for gc call (with syscall6) + my @argsgccgo = (); # Arguments for gccgo call (with C.name_of_syscall) + my $n = 0; + my $arg_n = 0; + foreach my $p (@in) { + my ($name, $type) = parseparam($p); + if($type =~ /^\*/) { + push @argscommun, "uintptr(unsafe.Pointer($name))"; + push @argscall, "$name uintptr"; + push @argsgc, "$name"; + push @argsgccgo, "C.uintptr_t($name)"; + } elsif($type eq "string" && $errvar ne "") { + $textcommon .= "\tvar _p$n $strconvtype\n"; + $textcommon .= "\t_p$n, $errvar = $strconvfunc($name)\n"; + $textcommon .= "\tif $errvar != nil {\n\t\treturn\n\t}\n"; + + push @argscommun, "uintptr(unsafe.Pointer(_p$n))"; + push @argscall, "_p$n uintptr "; + push @argsgc, "_p$n"; + push @argsgccgo, "C.uintptr_t(_p$n)"; + $n++; + } elsif($type eq "string") { + print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n"; + $textcommon .= "\tvar _p$n $strconvtype\n"; + $textcommon .= "\t_p$n, $errvar = $strconvfunc($name)\n"; + $textcommon .= "\tif $errvar != nil {\n\t\treturn\n\t}\n"; + + push @argscommun, "uintptr(unsafe.Pointer(_p$n))"; + push @argscall, "_p$n uintptr"; + push @argsgc, "_p$n"; + push @argsgccgo, "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. + $textcommon .= "\tvar _p$n *$1\n"; + $textcommon .= "\tif len($name) > 0 {\n\t\t_p$n = \&$name\[0]\n\t}\n"; + push @argscommun, "uintptr(unsafe.Pointer(_p$n))", "len($name)"; + push @argscall, "_p$n uintptr", "_lenp$n int"; + push @argsgc, "_p$n", "uintptr(_lenp$n)"; + push @argsgccgo, "C.uintptr_t(_p$n)", "C.size_t(_lenp$n)"; + $n++; + } elsif($type eq "int64" && $_32bit ne "") { + print STDERR "$ARGV:$.: $func uses int64 with 32 bits mode. Case not yet implemented\n"; + # if($_32bit eq "big-endian") { + # push @args, "uintptr($name >> 32)", "uintptr($name)"; + # } else { + # push @args, "uintptr($name)", "uintptr($name >> 32)"; + # } + # $n++; + } elsif($type eq "bool") { + print STDERR "$ARGV:$.: $func uses bool. Case not yet implemented\n"; + # $text .= "\tvar _p$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 =~ /^_/ ||$type eq "unsafe.Pointer") { + push @argscommun, "uintptr($name)"; + push @argscall, "$name uintptr"; + push @argsgc, "$name"; + push @argsgccgo, "C.uintptr_t($name)"; + } elsif($type eq "int") { + if (($arg_n == 0 || $arg_n == 2) && ($func eq "fcntl" || $func eq "FcntlInt" || $func eq "FcntlFlock")) { + # These fcntl arguments need to be uintptr to be able to call FcntlInt and FcntlFlock + push @argscommun, "uintptr($name)"; + push @argscall, "$name uintptr"; + push @argsgc, "$name"; + push @argsgccgo, "C.uintptr_t($name)"; + } else { + push @argscommun, "$name"; + push @argscall, "$name int"; + push @argsgc, "uintptr($name)"; + push @argsgccgo, "C.int($name)"; + } + } elsif($type eq "int32") { + push @argscommun, "$name"; + push @argscall, "$name int32"; + push @argsgc, "uintptr($name)"; + push @argsgccgo, "C.int($name)"; + } elsif($type eq "int64") { + push @argscommun, "$name"; + push @argscall, "$name int64"; + push @argsgc, "uintptr($name)"; + push @argsgccgo, "C.longlong($name)"; + } elsif($type eq "uint32") { + push @argscommun, "$name"; + push @argscall, "$name uint32"; + push @argsgc, "uintptr($name)"; + push @argsgccgo, "C.uint($name)"; + } elsif($type eq "uint64") { + push @argscommun, "$name"; + push @argscall, "$name uint64"; + push @argsgc, "uintptr($name)"; + push @argsgccgo, "C.ulonglong($name)"; + } elsif($type eq "uintptr") { + push @argscommun, "$name"; + push @argscall, "$name uintptr"; + push @argsgc, "$name"; + push @argsgccgo, "C.uintptr_t($name)"; + } else { + push @argscommun, "int($name)"; + push @argscall, "$name int"; + push @argsgc, "uintptr($name)"; + push @argsgccgo, "C.int($name)"; + } + $arg_n++; + } + my $nargs = @argsgc; + + # COMMUN function generation + my $argscommun = join(', ', @argscommun); + my $callcommun = "call$sysname($argscommun)"; + my @ret = ("_", "_"); + my $body = ""; + 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[1] = $reg; + $do_errno = 1; + } else { + $reg = "r0"; + $ret[0] = $reg; + } + if($type eq "bool") { + $reg = "$reg != 0"; + } + if($reg ne "e1") { + $body .= "\t$name = $type($reg)\n"; + } + } + if ($ret[0] eq "_" && $ret[1] eq "_") { + $textcommon .= "\t$callcommun\n"; + } else { + $textcommon .= "\t$ret[0], $ret[1] := $callcommun\n"; + } + $textcommon .= $body; + + if ($do_errno) { + $textcommon .= "\tif e1 != 0 {\n"; + $textcommon .= "\t\terr = errnoErr(e1)\n"; + $textcommon .= "\t}\n"; + } + $textcommon .= "\treturn\n"; + $textcommon .= "}\n"; + + if ($onlyCommon){ + next + } + # CALL Prototype + my $callProto = sprintf "func call%s(%s) (r1 uintptr, e1 Errno) {\n", $sysname, join(', ', @argscall); + + # GC function generation + my $asm = "syscall6"; + if ($nonblock) { + $asm = "rawSyscall6"; + } + + if(@argsgc <= 6) { + while(@argsgc < 6) { + push @argsgc, "0"; + } + } else { + print STDERR "$ARGV:$.: too many arguments to system call\n"; + } + my $argsgc = join(', ', @argsgc); + my $callgc = "$asm(uintptr(unsafe.Pointer(&$sysvarname)), $nargs, $argsgc)"; + + $textgc .= $callProto; + $textgc .= "\tr1, _, e1 = $callgc\n"; + $textgc .= "\treturn\n}\n"; + + # GCCGO function generation + my $argsgccgo = join(', ', @argsgccgo); + my $callgccgo = "C.$sysname($argsgccgo)"; + $textgccgo .= $callProto; + $textgccgo .= "\tr1 = uintptr($callgccgo)\n"; + $textgccgo .= "\te1 = syscall.GetErrno()\n"; + $textgccgo .= "\treturn\n}\n"; +} + +if($errors) { + exit 1; +} + +# Print zsyscall_aix_ppc64.go +open(my $fcommun, '>', 'zsyscall_aix_ppc64.go'); +my $tofcommun = <<EOF; +// $cmdline +// Code generated by the command above; see README.md. DO NOT EDIT. + +// +build $tags + +package $package + +import ( + "unsafe" +) + +EOF + +$tofcommun .= "import \"golang.org/x/sys/unix\"\n" if $package ne "unix"; + +$tofcommun .=<<EOF; + +$textcommon +EOF +print $fcommun $tofcommun; + + +# Print zsyscall_aix_ppc64_gc.go +open(my $fgc, '>', 'zsyscall_aix_ppc64_gc.go'); +my $tofgc = <<EOF; +// $cmdline +// Code generated by the command above; see README.md. DO NOT EDIT. + +// +build $tags +// +build !gccgo + +package $package + +import ( + "unsafe" +) + + +EOF + +$tofgc .= "import \"golang.org/x/sys/unix\"\n" if $package ne "unix"; + +my $vardecls = "\t" . join(",\n\t", @vars); +$vardecls .= " syscallFunc"; + +$tofgc .=<<EOF; +$dynimports +$linknames +type syscallFunc uintptr + +var ( +$vardecls +) + +// Implemented in runtime/syscall_aix.go. +func rawSyscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno) +func syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno) + +$textgc +EOF +print $fgc $tofgc; + +# Print zsyscall_aix_ppc64_gc.go +open(my $fgccgo, '>', 'zsyscall_aix_ppc64_gccgo.go'); +my $tofgccgo = <<EOF; +// $cmdline +// Code generated by the command above; see README.md. DO NOT EDIT. + +// +build $tags +// +build gccgo + +package $package + + +$c_extern +*/ +import "C" +import ( + "syscall" +) + + +EOF + +$tofgccgo .= "import \"golang.org/x/sys/unix\"\n" if $package ne "unix"; + +$tofgccgo .=<<EOF; + +$textgccgo +EOF +print $fgccgo $tofgccgo; +exit 0; |