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Sweden-Number/tools/make_requests

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Perl
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#! /usr/bin/perl -w
#
# Build the server/trace.c and server/request.h files
# from the contents of server/protocol.def.
#
# Copyright (C) 1998 Alexandre Julliard
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#
use strict;
my %formats =
( # size align format
"int" => [ 4, 4, "%d" ],
"short int" => [ 2, 2, "%d" ],
"char" => [ 1, 1, "%c" ],
"unsigned char" => [ 1, 1, "%02x" ],
"unsigned short"=> [ 2, 2, "%04x" ],
"unsigned int" => [ 4, 4, "%08x" ],
"data_size_t" => [ 4, 4, "%u" ],
"obj_handle_t" => [ 4, 4, "%04x" ],
"atom_t" => [ 4, 4, "%04x" ],
"user_handle_t" => [ 4, 4, "%08x" ],
"process_id_t" => [ 4, 4, "%04x" ],
"thread_id_t" => [ 4, 4, "%04x" ],
"client_ptr_t" => [ 8, 8, "&dump_uint64" ],
"mod_handle_t" => [ 8, 8, "&dump_uint64" ],
"lparam_t" => [ 8, 8, "&dump_uint64" ],
"apc_param_t" => [ 8, 8, "&dump_uint64" ],
"file_pos_t" => [ 8, 8, "&dump_uint64" ],
"mem_size_t" => [ 8, 8, "&dump_uint64" ],
"affinity_t" => [ 8, 8, "&dump_uint64" ],
"timeout_t" => [ 8, 8, "&dump_timeout" ],
"rectangle_t" => [ 16, 4, "&dump_rectangle" ],
"char_info_t" => [ 4, 2, "&dump_char_info" ],
"apc_call_t" => [ 40, 8, "&dump_apc_call" ],
"apc_result_t" => [ 40, 8, "&dump_apc_result" ],
"async_data_t" => [ 40, 8, "&dump_async_data" ],
"luid_t" => [ 8, 4, "&dump_luid" ],
"ioctl_code_t" => [ 4, 4, "&dump_ioctl_code" ],
"cpu_type_t" => [ 4, 4, "&dump_cpu_type" ],
);
my @requests = ();
my %replies = ();
my @asserts = ();
my @trace_lines = ();
my $max_req_size = 64;
my $warnings = scalar(@ARGV) && $ARGV[0] eq "-w";
sub add_padding($$)
{
my ($offset, $padding) = @_;
if ($offset % $padding)
{
my $count = $padding - ($offset % $padding);
print SERVER_PROT " char __pad_$offset\[$count\];\n";
$offset += $count;
}
return $offset;
}
### Generate a dumping function
sub DO_DUMP_FUNC($$@)
{
my $name = shift;
my $req = shift;
my $prefix = " ";
push @trace_lines, "static void dump_${name}_$req( const struct ${name}_$req *req )\n{\n";
while ($#_ >= 0)
{
my $type = shift;
my $var = shift;
next if $var =~ /^__pad/;
if (defined($formats{$type}))
{
my $fmt = ${$formats{$type}}[2];
if ($fmt =~ /^&(.*)/)
{
my $func = $1;
push @trace_lines, " $func( \"$prefix$var=\", &req->$var );\n";
}
elsif ($fmt =~ /^(%.*)\s+\((.*)\)/)
{
my ($format, $cast) = ($1, $2);
push @trace_lines, " fprintf( stderr, \"$prefix$var=$format\", ($cast)req->$var );\n";
}
else
{
push @trace_lines, " fprintf( stderr, \"$prefix$var=$fmt\", req->$var );\n";
}
}
else # must be some varargs format
{
push @trace_lines, " " . sprintf($type, "$prefix$var=") . ";\n";
}
$prefix = ", ";
}
push @trace_lines, "}\n\n";
}
### Parse the request definitions
sub PARSE_REQUESTS()
{
# states: 0 = header 1 = declarations 2 = inside @REQ 3 = inside @REPLY
my $state = 0;
my $offset = 0;
my $name = "";
my @in_struct = ();
my @out_struct = ();
open(PROTOCOL,"server/protocol.def") or die "Can't open server/protocol.def";
while (<PROTOCOL>)
{
my ($type, $var);
# strip comments
s!/\*.*\*/!!g;
# strip white space at end of line
s/\s+$//;
if (/^\@HEADER/)
{
die "Misplaced \@HEADER" unless $state == 0;
$state++;
next;
}
# ignore everything while in state 0
next if $state == 0;
if (/^\@REQ\(\s*(\w+)\s*\)/)
{
$name = $1;
die "Misplaced \@REQ" unless $state == 1;
# start a new request
@in_struct = ();
@out_struct = ();
$offset = 12;
print SERVER_PROT "struct ${name}_request\n{\n";
print SERVER_PROT " struct request_header __header;\n";
$state++;
next;
}
if (/^\@REPLY/)
{
die "Misplaced \@REPLY" unless $state == 2;
$offset = add_padding( $offset, 8 ); # all requests should be 8-byte aligned
die "request $name too large ($offset)" if ($offset > $max_req_size);
push @asserts, "C_ASSERT( sizeof(struct ${name}_request) == $offset );\n";
print SERVER_PROT "};\n";
print SERVER_PROT "struct ${name}_reply\n{\n";
print SERVER_PROT " struct reply_header __header;\n";
die "request $name too large ($offset)" if ($offset > $max_req_size);
$offset = 8;
$state++;
next;
}
if (/^\@END/)
{
die "Misplaced \@END" unless ($state == 2 || $state == 3);
$offset = add_padding( $offset, 8 ); # all requests should be 8-byte aligned
print SERVER_PROT "};\n";
if ($state == 2) # build dummy reply struct
{
die "request $name too large ($offset)" if ($offset > $max_req_size);
push @asserts, "C_ASSERT( sizeof(struct ${name}_request) == $offset );\n";
print SERVER_PROT "struct ${name}_reply\n{\n";
print SERVER_PROT " struct reply_header __header;\n";
print SERVER_PROT "};\n";
}
else
{
die "reply $name too large ($offset)" if ($offset > $max_req_size);
push @asserts, "C_ASSERT( sizeof(struct ${name}_reply) == $offset );\n";
}
# got a complete request
push @requests, $name;
DO_DUMP_FUNC( $name, "request", @in_struct);
if ($#out_struct >= 0)
{
$replies{$name} = 1;
DO_DUMP_FUNC( $name, "reply", @out_struct);
}
$state = 1;
next;
}
if ($state != 1)
{
# skip empty lines (but keep them in output file)
if (/^$/)
{
print SERVER_PROT "\n";
next;
}
if (/^\s*VARARG\((\w+),(\w+),(\w+)\)/)
{
$var = $1;
$type = "dump_varargs_" . $2 . "( \"%s\", min(cur_size,req->" . $3 . ") )";
s!(VARARG\(.*\)\s*;)!/* $1 */!;
}
elsif (/^\s*VARARG\((\w+),(\w+)\)/)
{
$var = $1;
$type = "dump_varargs_" . $2 . "( \"%s\", cur_size )";
s!(VARARG\(.*\)\s*;)!/* $1 */!;
}
elsif (/^\s*(\w+\**(\s+\w+\**)*)\s+(\w+);/)
{
$type = $1;
$var = $3;
die "Unrecognized type $type" unless defined($formats{$type});
my @fmt = @{$formats{$type}};
if ($offset & ($fmt[1] - 1))
{
my $count = $fmt[1] - ($offset & ($fmt[1] - 1));
print "protocol.def:$.: warning: $name $offset $type $var needs padding\n" if $warnings;
print SERVER_PROT " char __pad_$offset\[$count\];\n";
$offset += $count;
}
if ($state == 2)
{
push @asserts, "C_ASSERT( FIELD_OFFSET(struct ${name}_request, $var) == $offset );\n";
}
else
{
push @asserts, "C_ASSERT( FIELD_OFFSET(struct ${name}_reply, $var) == $offset );\n";
}
$offset += $fmt[0];
}
else
{
die "Unrecognized syntax $_";
}
if ($state == 2) { push @in_struct, $type, $var; }
if ($state == 3) { push @out_struct, $type, $var; }
}
# Pass it through into the output file
print SERVER_PROT $_ . "\n";
}
close PROTOCOL;
}
### Retrieve the server protocol version from the existing server_protocol.h file
sub GET_PROTOCOL_VERSION()
{
my $protocol = 0;
open SERVER_PROT, "include/wine/server_protocol.h" or return 0;
while (<SERVER_PROT>)
{
if (/^\#define SERVER_PROTOCOL_VERSION (\d+)/) { $protocol = $1; last; }
}
close SERVER_PROT;
return $protocol;
}
### Retrieve the list of status and errors used in the server
sub GET_ERROR_NAMES()
{
my %errors = ();
foreach my $f (glob "server/*.c")
{
next if $f eq "server/trace.c";
open FILE, $f or die "Can't open $f";
while (<FILE>)
{
if (/STATUS_(\w+)/)
{
$errors{$1} = "STATUS_$1" unless $1 eq "SUCCESS";
}
elsif (/set_win32_error\s*\(\s*(\w+)\s*\)/)
{
$errors{$1} = "0xc0010000 | $1";
}
}
close FILE;
}
return %errors;
}
# update a file if changed
sub update_file($)
{
my $file = shift;
my $ret = !(-f $file) || system "cmp $file $file.new >/dev/null";
if (!$ret)
{
unlink "$file.new";
}
else
{
rename "$file.new", "$file";
print "$file updated\n";
}
return $ret;
}
# replace some lines in a file between two markers
sub replace_in_file($$$@)
{
my $file = shift;
my $start = shift;
my $end = shift;
open NEW_FILE, ">$file.new" or die "cannot create $file.new";
if (defined($start))
{
open OLD_FILE, "$file" or die "cannot open $file";
while (<OLD_FILE>)
{
print NEW_FILE $_;
last if /$start/;
}
}
print NEW_FILE "\n", @_, "\n";
if (defined($end))
{
my $skip=1;
while (<OLD_FILE>)
{
$skip = 0 if /$end/;
print NEW_FILE $_ unless $skip;
}
}
close OLD_FILE if defined($start);
close NEW_FILE;
return update_file($file);
}
### Main
# Get the server protocol version
my $protocol = GET_PROTOCOL_VERSION();
my %errors = GET_ERROR_NAMES();
### Create server_protocol.h and print header
open SERVER_PROT, ">include/wine/server_protocol.h.new" or die "Cannot create include/wine/server_protocol.h.new";
print SERVER_PROT "/*\n * Wine server protocol definitions\n *\n";
print SERVER_PROT " * This file is automatically generated; DO NO EDIT!\n";
print SERVER_PROT " * Edit server/protocol.def instead and re-run tools/make_requests\n";
print SERVER_PROT " */\n\n";
print SERVER_PROT "#ifndef __WINE_WINE_SERVER_PROTOCOL_H\n";
print SERVER_PROT "#define __WINE_WINE_SERVER_PROTOCOL_H\n";
### Parse requests to find request/reply structure definitions
PARSE_REQUESTS();
### Build the request list and structures
print SERVER_PROT "\n\nenum request\n{\n";
foreach my $req (@requests) { print SERVER_PROT " REQ_$req,\n"; }
print SERVER_PROT " REQ_NB_REQUESTS\n};\n\n";
print SERVER_PROT "union generic_request\n{\n";
print SERVER_PROT " struct request_max_size max_size;\n";
print SERVER_PROT " struct request_header request_header;\n";
foreach my $req (@requests) { print SERVER_PROT " struct ${req}_request ${req}_request;\n"; }
print SERVER_PROT "};\n";
print SERVER_PROT "union generic_reply\n{\n";
print SERVER_PROT " struct request_max_size max_size;\n";
print SERVER_PROT " struct reply_header reply_header;\n";
foreach my $req (@requests) { print SERVER_PROT " struct ${req}_reply ${req}_reply;\n"; }
print SERVER_PROT "};\n\n";
printf SERVER_PROT "#define SERVER_PROTOCOL_VERSION %d\n\n", $protocol + 1;
print SERVER_PROT "#endif /* __WINE_WINE_SERVER_PROTOCOL_H */\n";
close SERVER_PROT;
update_file( "include/wine/server_protocol.h" );
### Output the dumping function tables
push @trace_lines, "static const dump_func req_dumpers[REQ_NB_REQUESTS] = {\n";
foreach my $req (@requests)
{
push @trace_lines, " (dump_func)dump_${req}_request,\n";
}
push @trace_lines, "};\n\n";
push @trace_lines, "static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {\n";
foreach my $req (@requests)
{
push @trace_lines, " ", $replies{$req} ? "(dump_func)dump_${req}_reply,\n" : "NULL,\n";
}
push @trace_lines, "};\n\n";
push @trace_lines, "static const char * const req_names[REQ_NB_REQUESTS] = {\n";
foreach my $req (@requests)
{
push @trace_lines, " \"$req\",\n";
}
push @trace_lines, "};\n\n";
push @trace_lines, "static const struct\n{\n";
push @trace_lines, " const char *name;\n";
push @trace_lines, " unsigned int value;\n";
push @trace_lines, "} status_names[] =\n{\n";
foreach my $err (sort keys %errors)
{
push @trace_lines, sprintf(" { %-30s %s },\n", "\"$err\",", $errors{$err});
}
push @trace_lines, " { NULL, 0 }\n";
push @trace_lines, "};\n";
replace_in_file( "server/trace.c",
"### make_requests begin ###",
"### make_requests end ###",
@trace_lines );
### Output the request handlers list
my @request_lines = ();
foreach my $req (@requests) { push @request_lines, "DECL_HANDLER($req);\n"; }
push @request_lines, "\n#ifdef WANT_REQUEST_HANDLERS\n\n";
push @request_lines, "typedef void (*req_handler)( const void *req, void *reply );\n";
push @request_lines, "static const req_handler req_handlers[REQ_NB_REQUESTS] =\n{\n";
foreach my $req (@requests)
{
push @request_lines, " (req_handler)req_$req,\n";
}
push @request_lines, "};\n\n";
foreach my $type (sort keys %formats)
{
my $size = ${$formats{$type}}[0];
push @request_lines, "C_ASSERT( sizeof($type) == $size );\n";
}
push @request_lines, @asserts;
push @request_lines, "\n#endif /* WANT_REQUEST_HANDLERS */\n";
replace_in_file( "server/request.h",
"### make_requests begin ###",
"### make_requests end ###",
@request_lines );
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