e_os2.h revision 296465 
1/* e_os2.h */
2/* ====================================================================
3 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in
14 *    the documentation and/or other materials provided with the
15 *    distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 *    software must display the following acknowledgment:
19 *    "This product includes software developed by the OpenSSL Project
20 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 *    endorse or promote products derived from this software without
24 *    prior written permission. For written permission, please contact
25 *    openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 *    nor may "OpenSSL" appear in their names without prior written
29 *    permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 *    acknowledgment:
33 *    "This product includes software developed by the OpenSSL Project
34 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com).  This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include <openssl/opensslconf.h>
57
58#ifndef HEADER_E_OS2_H
59# define HEADER_E_OS2_H
60
61#ifdef  __cplusplus
62extern "C" {
63#endif
64
65/******************************************************************************
66 * Detect operating systems.  This probably needs completing.
67 * The result is that at least one OPENSSL_SYS_os macro should be defined.
68 * However, if none is defined, Unix is assumed.
69 **/
70
71# define OPENSSL_SYS_UNIX
72
73/* ---------------------- Macintosh, before MacOS X ----------------------- */
74# if defined(__MWERKS__) && defined(macintosh) || defined(OPENSSL_SYSNAME_MAC)
75#  undef OPENSSL_SYS_UNIX
76#  define OPENSSL_SYS_MACINTOSH_CLASSIC
77# endif
78
79/* ---------------------- NetWare ----------------------------------------- */
80# if defined(NETWARE) || defined(OPENSSL_SYSNAME_NETWARE)
81#  undef OPENSSL_SYS_UNIX
82#  define OPENSSL_SYS_NETWARE
83# endif
84
85/* --------------------- Microsoft operating systems ---------------------- */
86
87/*
88 * Note that MSDOS actually denotes 32-bit environments running on top of
89 * MS-DOS, such as DJGPP one.
90 */
91# if defined(OPENSSL_SYSNAME_MSDOS)
92#  undef OPENSSL_SYS_UNIX
93#  define OPENSSL_SYS_MSDOS
94# endif
95
96/*
97 * For 32 bit environment, there seems to be the CygWin environment and then
98 * all the others that try to do the same thing Microsoft does...
99 */
100# if defined(OPENSSL_SYSNAME_UWIN)
101#  undef OPENSSL_SYS_UNIX
102#  define OPENSSL_SYS_WIN32_UWIN
103# else
104#  if defined(__CYGWIN32__) || defined(OPENSSL_SYSNAME_CYGWIN32)
105#   undef OPENSSL_SYS_UNIX
106#   define OPENSSL_SYS_WIN32_CYGWIN
107#  else
108#   if defined(_WIN32) || defined(OPENSSL_SYSNAME_WIN32)
109#    undef OPENSSL_SYS_UNIX
110#    define OPENSSL_SYS_WIN32
111#   endif
112#   if defined(_WIN64) || defined(OPENSSL_SYSNAME_WIN64)
113#    undef OPENSSL_SYS_UNIX
114#    if !defined(OPENSSL_SYS_WIN64)
115#     define OPENSSL_SYS_WIN64
116#    endif
117#   endif
118#   if defined(OPENSSL_SYSNAME_WINNT)
119#    undef OPENSSL_SYS_UNIX
120#    define OPENSSL_SYS_WINNT
121#   endif
122#   if defined(OPENSSL_SYSNAME_WINCE)
123#    undef OPENSSL_SYS_UNIX
124#    define OPENSSL_SYS_WINCE
125#   endif
126#  endif
127# endif
128
129/* Anything that tries to look like Microsoft is "Windows" */
130# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN64) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
131#  undef OPENSSL_SYS_UNIX
132#  define OPENSSL_SYS_WINDOWS
133#  ifndef OPENSSL_SYS_MSDOS
134#   define OPENSSL_SYS_MSDOS
135#  endif
136# endif
137
138/*
139 * DLL settings.  This part is a bit tough, because it's up to the
140 * application implementor how he or she will link the application, so it
141 * requires some macro to be used.
142 */
143# ifdef OPENSSL_SYS_WINDOWS
144#  ifndef OPENSSL_OPT_WINDLL
145#   if defined(_WINDLL)         /* This is used when building OpenSSL to
146                                 * indicate that DLL linkage should be used */
147#    define OPENSSL_OPT_WINDLL
148#   endif
149#  endif
150# endif
151
152/* ------------------------------- OpenVMS -------------------------------- */
153# if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYSNAME_VMS)
154#  undef OPENSSL_SYS_UNIX
155#  define OPENSSL_SYS_VMS
156#  if defined(__DECC)
157#   define OPENSSL_SYS_VMS_DECC
158#  elif defined(__DECCXX)
159#   define OPENSSL_SYS_VMS_DECC
160#   define OPENSSL_SYS_VMS_DECCXX
161#  else
162#   define OPENSSL_SYS_VMS_NODECC
163#  endif
164# endif
165
166/* -------------------------------- OS/2 ---------------------------------- */
167# if defined(__EMX__) || defined(__OS2__)
168#  undef OPENSSL_SYS_UNIX
169#  define OPENSSL_SYS_OS2
170# endif
171
172/* -------------------------------- Unix ---------------------------------- */
173# ifdef OPENSSL_SYS_UNIX
174#  if defined(linux) || defined(__linux__) || defined(OPENSSL_SYSNAME_LINUX)
175#   define OPENSSL_SYS_LINUX
176#  endif
177#  ifdef OPENSSL_SYSNAME_MPE
178#   define OPENSSL_SYS_MPE
179#  endif
180#  ifdef OPENSSL_SYSNAME_SNI
181#   define OPENSSL_SYS_SNI
182#  endif
183#  ifdef OPENSSL_SYSNAME_ULTRASPARC
184#   define OPENSSL_SYS_ULTRASPARC
185#  endif
186#  ifdef OPENSSL_SYSNAME_NEWS4
187#   define OPENSSL_SYS_NEWS4
188#  endif
189#  ifdef OPENSSL_SYSNAME_MACOSX
190#   define OPENSSL_SYS_MACOSX
191#  endif
192#  ifdef OPENSSL_SYSNAME_MACOSX_RHAPSODY
193#   define OPENSSL_SYS_MACOSX_RHAPSODY
194#   define OPENSSL_SYS_MACOSX
195#  endif
196#  ifdef OPENSSL_SYSNAME_SUNOS
197#   define OPENSSL_SYS_SUNOS
198#  endif
199#  if defined(_CRAY) || defined(OPENSSL_SYSNAME_CRAY)
200#   define OPENSSL_SYS_CRAY
201#  endif
202#  if defined(_AIX) || defined(OPENSSL_SYSNAME_AIX)
203#   define OPENSSL_SYS_AIX
204#  endif
205# endif
206
207/* -------------------------------- VOS ----------------------------------- */
208# ifdef OPENSSL_SYSNAME_VOS
209#  define OPENSSL_SYS_VOS
210# endif
211
212/* ------------------------------ VxWorks --------------------------------- */
213# ifdef OPENSSL_SYSNAME_VXWORKS
214#  define OPENSSL_SYS_VXWORKS
215# endif
216
217/**
218 * That's it for OS-specific stuff
219 *****************************************************************************/
220
221/* Specials for I/O an exit */
222# ifdef OPENSSL_SYS_MSDOS
223#  define OPENSSL_UNISTD_IO <io.h>
224#  define OPENSSL_DECLARE_EXIT extern void exit(int);
225# else
226#  define OPENSSL_UNISTD_IO OPENSSL_UNISTD
227#  define OPENSSL_DECLARE_EXIT  /* declared in unistd.h */
228# endif
229
230/*-
231 * Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN, to define and declare
232 * certain global symbols that, with some compilers under VMS, have to be
233 * defined and declared explicitely with globaldef and globalref.
234 * Definitions of OPENSSL_EXPORT and OPENSSL_IMPORT, to define and declare
235 * DLL exports and imports for compilers under Win32.  These are a little
236 * more complicated to use.  Basically, for any library that exports some
237 * global variables, the following code must be present in the header file
238 * that declares them, before OPENSSL_EXTERN is used:
239 *
240 * #ifdef SOME_BUILD_FLAG_MACRO
241 * # undef OPENSSL_EXTERN
242 * # define OPENSSL_EXTERN OPENSSL_EXPORT
243 * #endif
244 *
245 * The default is to have OPENSSL_EXPORT, OPENSSL_IMPORT and OPENSSL_GLOBAL
246 * have some generally sensible values, and for OPENSSL_EXTERN to have the
247 * value OPENSSL_IMPORT.
248 */
249
250# if defined(OPENSSL_SYS_VMS_NODECC)
251#  define OPENSSL_EXPORT globalref
252#  define OPENSSL_IMPORT globalref
253#  define OPENSSL_GLOBAL globaldef
254# elif defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
255#  define OPENSSL_EXPORT extern __declspec(dllexport)
256#  define OPENSSL_IMPORT extern __declspec(dllimport)
257#  define OPENSSL_GLOBAL
258# else
259#  define OPENSSL_EXPORT extern
260#  define OPENSSL_IMPORT extern
261#  define OPENSSL_GLOBAL
262# endif
263# define OPENSSL_EXTERN OPENSSL_IMPORT
264
265/*-
266 * Macros to allow global variables to be reached through function calls when
267 * required (if a shared library version requires it, for example.
268 * The way it's done allows definitions like this:
269 *
270 *      // in foobar.c
271 *      OPENSSL_IMPLEMENT_GLOBAL(int,foobar,0)
272 *      // in foobar.h
273 *      OPENSSL_DECLARE_GLOBAL(int,foobar);
274 *      #define foobar OPENSSL_GLOBAL_REF(foobar)
275 */
276# ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
277#  define OPENSSL_IMPLEMENT_GLOBAL(type,name)                         \
278        extern type _hide_##name;                                    \
279        type *_shadow_##name(void) { return &_hide_##name; }         \
280        static type _hide_##name
281#  define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
282#  define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
283# else
284#  define OPENSSL_IMPLEMENT_GLOBAL(type,name) OPENSSL_GLOBAL type _shadow_##name
285#  define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
286#  define OPENSSL_GLOBAL_REF(name) _shadow_##name
287# endif
288
289#ifdef  __cplusplus
290}
291#endif
292#endif
293