/
lxapigen.pl
executable file
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/
lxapigen.pl
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#!/usr/bin/perl -w
use warnings;
use strict;
my %typesizes = (
'LONG' => 4,
'ULONG' => 4,
'SHORT' => 2,
'USHORT' => 2,
'HVIO' => 2,
'HKBD' => 2,
);
sub typesize {
my $t = shift;
return 4 if ($t =~ /\AP/); # pointers are 4 bytes (16:16).
die("Unknown type '$t', please update \%typesizes\n") if not defined $typesizes{$t};
return $typesizes{$t};
}
my $dirname = defined $ARGV[0] ? $ARGV[0] : 'native';
opendir(DIRH, $dirname) or die("Failed to opendir '$dirname': $!\n");
while (readdir(DIRH)) {
next if not /\.h\Z/;
next if /\Aos2/;
next if /\-lx\.h\Z/;
my $module = $_;
my $header = "$dirname/$module";
$module =~ s/\.h\Z//;
open(IN, '<', $header) or die("Failed to open '$header' for reading: $!\n");
print("$module ...\n");
my %ordinalmap = ();
my $has16bitfns = 0;
while (<IN>) {
chomp;
next if not /OS2APIINFO/;
my $line = $_;
if (/\AOS2EXPORT\s+(.*?)\s+(OS2API|OS2API16)\s+(.*?)\((.*?)\)\s+OS2APIINFO\((.*?)\);/) {
my %table = (
'rettype' => $1,
'apitype' => $2,
'fn' => $3,
'args' => $4,
);
my $apiinfo = $5;
my $is16bit = $table{'apitype'} eq 'OS2API16';
$table{'is16bit'} = $is16bit;
$has16bitfns |= $is16bit;
#print("rettype='$rettype' fn='$fn' args='$args' apiinfo='$apiinfo'\n");
my $fn = $table{'fn'};
my $ordinal;
if ($apiinfo =~ /\A(\d+)\Z/) {
$ordinal = int($1);
} else {
die("bogus OS2APIINFO for '$fn'\n");
}
$table{'ordinal'} = $ordinal;
if (defined $ordinalmap{$ordinal}) {
my $dupfn = $ordinalmap{$ordinal}{'fn'};
die("Duplicate ordinal #$ordinal between '$fn' and '$dupfn'\n");
}
$ordinalmap{$ordinal} = \%table;
} else {
die ("Couldn't parse:\n\n $line\n\n")
}
}
close(IN);
next if (not %ordinalmap); # no exported items?
#use Data::Dumper qw(Dumper); print Dumper \%ordinalmap;
# Here we go...
my $outfname = "$dirname/$module-lx.h";
open(OUT, '>', $outfname) or die("Failed to open '$outfname' for writing: $!\n");
print OUT <<EOF
/**
* 2ine; an OS/2 emulator for Linux.
*
* Please see the file LICENSE.txt in the source's root directory.
*/
/* THIS FILE IS AUTOGENERATED. DO NOT EDIT BY HAND. see lxapigen.pl */
/* This is glue code for OS/2 binaries. Native binaries don't need this. */
#if LX_LEGACY
EOF
;
foreach (sort { $a <=> $b } keys(%ordinalmap) ) {
my $tableref = $ordinalmap{$_};
my $fn = $tableref->{'fn'};
my $argstr = $tableref->{'args'};
my $rettype = $tableref->{'rettype'};
my $is16bit = $tableref->{'is16bit'};
my @args = ();
if (($argstr ne 'VOID') and ($argstr ne 'void')) {
@args = split /,/, $argstr;
}
# Build a little wrapper that'll pull arguments off the stack and
# convert to whatever the native calling conventions are.
if ($is16bit) {
print OUT "static $rettype bridge16to32_$fn(uint8 *args) {\n";
#foreach (@args) {
# arguments are listed backwards here.
for my $i (reverse 0..$#args) {
my $arg = $args[$i];
my ($t, $n) = $arg =~ /\A\s*(.*?)\s+(.*?)\s*\Z/;
#print("arg='$_' t='$t' n='$n'\n");
my $a = ($t =~ /\AP/) ? 'PTRARG' : 'ARG'; # it's a pointer?
print OUT " LX_NATIVE_MODULE_16BIT_BRIDGE_$a($t, $n);\n";
}
print OUT " ";
if (($rettype ne 'void') && ($rettype ne 'VOID')) {
# Currently it's reasonable to assume the retval will land in EAX.
print OUT "return ";
}
print OUT "$fn(";
my $comma = '';
foreach (@args) {
my ($t, $n) = /\A\s*(.*?)\s+(.*?)\s*\Z/;
print OUT "$comma$n";
$comma = ', ';
}
print OUT ");\n";
print OUT "}\n\n";
}
}
if ($has16bitfns) {
print OUT "LX_NATIVE_MODULE_16BIT_SUPPORT()\n";
foreach (sort { $a <=> $b } keys(%ordinalmap) ) {
my $tableref = $ordinalmap{$_};
next if not $tableref->{'is16bit'};
my $fn = $tableref->{'fn'};
print OUT " LX_NATIVE_MODULE_16BIT_API($fn)\n";
}
print OUT "LX_NATIVE_MODULE_16BIT_SUPPORT_END()\n";
print OUT "\n";
print OUT "LX_NATIVE_MODULE_DEINIT({\n";
print OUT " LX_NATIVE_MODULE_DEINIT_16BIT_SUPPORT();\n";
print OUT "})\n";
print OUT "\n";
print OUT "static int init16_$module(void) {\n";
print OUT " LX_NATIVE_MODULE_INIT_16BIT_SUPPORT()\n";
foreach (sort { $a <=> $b } keys(%ordinalmap) ) {
my $tableref = $ordinalmap{$_};
next if not $tableref->{'is16bit'};
my $fn = $tableref->{'fn'};
my $argstr = $tableref->{'args'};
my $argbytes = 0;
my @args = ();
if (($argstr ne 'VOID') and ($argstr ne 'void')) {
@args = split /,/, $argstr;
}
foreach (@args) {
my ($t, $n) = /\A\s*(.*?)\s+(.*?)\s*\Z/;
$argbytes += typesize($t);
}
print OUT " LX_NATIVE_INIT_16BIT_BRIDGE($fn, $argbytes)\n";
}
print OUT " LX_NATIVE_MODULE_INIT_16BIT_SUPPORT_END()\n";
print OUT " return 1;\n";
print OUT "}\n\n";
}
print OUT "LX_NATIVE_MODULE_INIT(";
if ($has16bitfns) {
print OUT "{ if (!init16_$module()) return 0; }";
}
print OUT ")\n";
my $comma = '';
foreach (sort { $a <=> $b } keys(%ordinalmap) ) {
my $tableref = $ordinalmap{$_};
my $fn = $tableref->{'fn'};
my $ordinal = $tableref->{'ordinal'};
my $suffix = $tableref->{'is16bit'} ? '16' : '';
print OUT $comma;
# This is a hack for tcpip32, which doesn't want to step on BSD sockets symbols.
if ($fn =~ /\AOS2_(.*)\Z/) {
print OUT " LX_NATIVE_EXPORT_DIFFERENT_NAME($fn, \"$1\", $ordinal)";
} else {
print OUT " LX_NATIVE_EXPORT$suffix($fn, $ordinal)";
}
$comma = ",\n";
}
print OUT "\n";
print OUT <<EOF
LX_NATIVE_MODULE_INIT_END()
#endif /* LX_LEGACY */
/* end of $module-lx.h ... */
EOF
;
close(OUT);
}
closedir(DIRH);
# end of lxapigen.pl ...