xref: /openssl/ms/uplink-common.pl (revision c7fcbc09)
1#! /usr/bin/env perl
2# Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
3#
4# Licensed under the Apache License 2.0 (the "License").  You may not use
5# this file except in compliance with the License.  You can obtain a copy
6# in the file LICENSE in the source distribution or at
7# https://www.openssl.org/source/license.html
8
9# pull APPLINK_MAX value from applink.c...
10$applink_c=$0;
11$applink_c=~s|[^/\\]+$||g;
12$applink_c.="applink.c";
13open(INPUT,$applink_c) || die "can't open $applink_c: $!";
14@max=grep {/APPLINK_MAX\s+(\d+)/} <INPUT>;
15close(INPUT);
16($#max==0) or die "can't find APPLINK_MAX in $applink_c";
17
18$max[0]=~/APPLINK_MAX\s+(\d+)/;
19$N=$1;	# number of entries in OPENSSL_UplinkTable not including
20	# OPENSSL_UplinkTable[0], which contains this value...
21
221;
23
24# Idea is to fill the OPENSSL_UplinkTable with pointers to stubs
25# which invoke 'void OPENSSL_Uplink (ULONG_PTR *table,int index)';
26# and then dereference themselves. Latter shall result in endless
27# loop *unless* OPENSSL_Uplink does not replace 'table[index]' with
28# something else, e.g. as 'table[index]=unimplemented;'...
29