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|
#!/usr/bin/env perl
#
# %CopyrightBegin%
#
# Copyright Ericsson AB 1999-2016. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# %CopyrightEnd%
#
use strict;
use File::Basename;
# This program generates driver_tab.c which holds the driver_tab
# array. Since the contents of driver_tab will depend on which
# drivers we wish to include it has to be generated.
# usage: make_driver_tab [-o filename] drivers...
my $file = "";
my $nif = "";
my @emu_drivers = ();
my @static_drivers = ();
my @static_nifs = ();
my $mode = 1;
while (@ARGV) {
my $d = shift;
if ( $d =~ /^-o$/ ) {
$file = shift or die("-o requires argument");
next;
}
if ( $d =~ /^-nifs$/ ) {
$mode = 2;
next;
}
if ( $d =~ /^-drivers$/ ) {
$mode = 1;
next;
}
if ( $d =~ /^.*\.a$/ ) {
$d = basename $d;
$d =~ s/\.a$//; # strip .a
if ($mode == 1) {
push(@static_drivers, $d);
}
if ($mode == 2) {
push(@static_nifs, $d);
}
next;
} elsif ($mode == 2) {
$d = basename $d;
$d =~ s/_nif(\..*|)$//; # strip nif.* or just nif
push(@static_nifs, $d);
next;
}
$d = basename $d;
$d =~ s/drv(\..*|)$//; # strip drv.* or just drv
push(@emu_drivers, $d);
}
# Did we want output to a file?
if ( $file ) {
open(STDOUT, ">$file") or die("can't open $file for writing");
}
print <<EOF;
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#include "global.h"
EOF
# "extern" declarations
foreach (@emu_drivers) {
print "extern ErlDrvEntry ${_}driver_entry;\n";
}
foreach (@static_drivers) {
print "ErlDrvEntry *${_}_driver_init(void);\n";
}
# The array itself
print "\nErlDrvEntry *driver_tab[] =\n{\n";
foreach (@emu_drivers) {
print " &${_}driver_entry,\n";
}
foreach (@static_drivers) {
print " NULL, /* ${_} */\n";
}
print " NULL\n};\n";
print "void erts_init_static_drivers() {\n";
my $index = 0;
foreach (@static_drivers) {
print " driver_tab[".(scalar @emu_drivers+$index)."] = ${_}_driver_init();\n";
$index++;
}
print "}\n";
print <<EOF;
typedef struct ErtsStaticNifEntry_ {
const char *nif_name;
ErtsStaticNifInitFPtr nif_init;
} ErtsStaticNifEntry;
EOF
# prototypes
foreach (@static_nifs) {
my $d = ${_};
$d =~ s/\.debug//; # strip .debug
print "void *".$d."_nif_init(void);\n";
}
# The array itself
print "static ErtsStaticNifEntry static_nif_tab[] =\n{\n";
foreach (@static_nifs) {
my $d = ${_};
$d =~ s/\.debug//; # strip .debug
print "{\"${_}\",&".$d."_nif_init},\n";
}
print " {NULL,NULL}\n};\n";
print <<EOF;
ErtsStaticNifInitFPtr erts_static_nif_get_nif_init(const char *name, int len) {
ErtsStaticNifEntry* p;
for (p = static_nif_tab; p->nif_name != NULL; p++)
if (strncmp(p->nif_name, name, len) == 0 && p->nif_name[len] == 0)
return p->nif_init;
return NULL;
}
int erts_is_static_nif(void *handle) {
ErtsStaticNifEntry* p;
for (p = static_nif_tab; p->nif_name != NULL; p++)
if (((void*)p->nif_init) == handle)
return 1;
return 0;
}
EOF
# That's it
|
