1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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
10#ifndef HEADER_E_OS2_H
11# define HEADER_E_OS2_H
12
13# include <openssl/opensslconf.h>
14
15#ifdef __cplusplus
16extern "C" {
17#endif
18
19/******************************************************************************
20 * Detect operating systems. This probably needs completing.
21 * The result is that at least one OPENSSL_SYS_os macro should be defined.
22 * However, if none is defined, Unix is assumed.
23 **/
24
25# define OPENSSL_SYS_UNIX
26
27/* --------------------- Microsoft operating systems ---------------------- */
28
29/*
30 * Note that MSDOS actually denotes 32-bit environments running on top of
31 * MS-DOS, such as DJGPP one.
32 */
33# if defined(OPENSSL_SYS_MSDOS)
34# undef OPENSSL_SYS_UNIX
35# endif
36
37/*
38 * For 32 bit environment, there seems to be the CygWin environment and then
39 * all the others that try to do the same thing Microsoft does...
40 */
41/*
42 * UEFI lives here because it might be built with a Microsoft toolchain and
43 * we need to avoid the false positive match on Windows.
44 */
45# if defined(OPENSSL_SYS_UEFI)
46# undef OPENSSL_SYS_UNIX
47# elif defined(OPENSSL_SYS_UWIN)
48# undef OPENSSL_SYS_UNIX
49# define OPENSSL_SYS_WIN32_UWIN
50# else
51# if defined(__CYGWIN__) || defined(OPENSSL_SYS_CYGWIN)
52# undef OPENSSL_SYS_UNIX
53# define OPENSSL_SYS_WIN32_CYGWIN
54# else
55# if defined(_WIN32) || defined(OPENSSL_SYS_WIN32)
56# undef OPENSSL_SYS_UNIX
57# if !defined(OPENSSL_SYS_WIN32)
58# define OPENSSL_SYS_WIN32
59# endif
60# endif
61# if defined(_WIN64) || defined(OPENSSL_SYS_WIN64)
62# undef OPENSSL_SYS_UNIX
63# if !defined(OPENSSL_SYS_WIN64)
64# define OPENSSL_SYS_WIN64
65# endif
66# endif
67# if defined(OPENSSL_SYS_WINNT)
68# undef OPENSSL_SYS_UNIX
69# endif
70# if defined(OPENSSL_SYS_WINCE)
71# undef OPENSSL_SYS_UNIX
72# endif
73# endif
74# endif
75
76/* Anything that tries to look like Microsoft is "Windows" */
77# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN64) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
78# undef OPENSSL_SYS_UNIX
79# define OPENSSL_SYS_WINDOWS
80# ifndef OPENSSL_SYS_MSDOS
81# define OPENSSL_SYS_MSDOS
82# endif
83# endif
84
85/*
86 * DLL settings. This part is a bit tough, because it's up to the
87 * application implementor how he or she will link the application, so it
88 * requires some macro to be used.
89 */
90# ifdef OPENSSL_SYS_WINDOWS
91# ifndef OPENSSL_OPT_WINDLL
92# if defined(_WINDLL) /* This is used when building OpenSSL to
93 * indicate that DLL linkage should be used */
94# define OPENSSL_OPT_WINDLL
95# endif
96# endif
97# endif
98
99/* ------------------------------- OpenVMS -------------------------------- */
100# if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYS_VMS)
101# if !defined(OPENSSL_SYS_VMS)
102# undef OPENSSL_SYS_UNIX
103# endif
104# define OPENSSL_SYS_VMS
105# if defined(__DECC)
106# define OPENSSL_SYS_VMS_DECC
107# elif defined(__DECCXX)
108# define OPENSSL_SYS_VMS_DECC
109# define OPENSSL_SYS_VMS_DECCXX
110# else
111# define OPENSSL_SYS_VMS_NODECC
112# endif
113# endif
114
115/* -------------------------------- Unix ---------------------------------- */
116# ifdef OPENSSL_SYS_UNIX
117# if defined(linux) || defined(__linux__) && !defined(OPENSSL_SYS_LINUX)
118# define OPENSSL_SYS_LINUX
119# endif
120# if defined(_AIX) && !defined(OPENSSL_SYS_AIX)
121# define OPENSSL_SYS_AIX
122# endif
123# endif
124
125/* -------------------------------- VOS ----------------------------------- */
126# if defined(__VOS__) && !defined(OPENSSL_SYS_VOS)
127# define OPENSSL_SYS_VOS
128# ifdef __HPPA__
129# define OPENSSL_SYS_VOS_HPPA
130# endif
131# ifdef __IA32__
132# define OPENSSL_SYS_VOS_IA32
133# endif
134# endif
135
136/**
137 * That's it for OS-specific stuff
138 *****************************************************************************/
139
140/* Specials for I/O an exit */
141# ifdef OPENSSL_SYS_MSDOS
142# define OPENSSL_UNISTD_IO <io.h>
143# define OPENSSL_DECLARE_EXIT extern void exit(int);
144# else
145# define OPENSSL_UNISTD_IO OPENSSL_UNISTD
146# define OPENSSL_DECLARE_EXIT /* declared in unistd.h */
147# endif
148
149/*-
150 * Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN, to define and declare
151 * certain global symbols that, with some compilers under VMS, have to be
152 * defined and declared explicitly with globaldef and globalref.
153 * Definitions of OPENSSL_EXPORT and OPENSSL_IMPORT, to define and declare
154 * DLL exports and imports for compilers under Win32. These are a little
155 * more complicated to use. Basically, for any library that exports some
156 * global variables, the following code must be present in the header file
157 * that declares them, before OPENSSL_EXTERN is used:
158 *
159 * #ifdef SOME_BUILD_FLAG_MACRO
160 * # undef OPENSSL_EXTERN
161 * # define OPENSSL_EXTERN OPENSSL_EXPORT
162 * #endif
163 *
164 * The default is to have OPENSSL_EXPORT, OPENSSL_EXTERN and OPENSSL_GLOBAL
165 * have some generally sensible values.
166 */
167
168# if defined(OPENSSL_SYS_VMS_NODECC)
169# define OPENSSL_EXPORT globalref
170# define OPENSSL_EXTERN globalref
171# define OPENSSL_GLOBAL globaldef
172# elif defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
173# define OPENSSL_EXPORT extern __declspec(dllexport)
174# define OPENSSL_EXTERN extern __declspec(dllimport)
175# define OPENSSL_GLOBAL
176# else
177# define OPENSSL_EXPORT extern
178# define OPENSSL_EXTERN extern
179# define OPENSSL_GLOBAL
180# endif
181
182/*-
183 * Macros to allow global variables to be reached through function calls when
184 * required (if a shared library version requires it, for example.
185 * The way it's done allows definitions like this:
186 *
187 * // in foobar.c
188 * OPENSSL_IMPLEMENT_GLOBAL(int,foobar,0)
189 * // in foobar.h
190 * OPENSSL_DECLARE_GLOBAL(int,foobar);
191 * #define foobar OPENSSL_GLOBAL_REF(foobar)
192 */
193# ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
194# define OPENSSL_IMPLEMENT_GLOBAL(type,name,value) \
195 type *_shadow_##name(void) \
196 { static type _hide_##name=value; return &_hide_##name; }
197# define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
198# define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
199# else
200# define OPENSSL_IMPLEMENT_GLOBAL(type,name,value) OPENSSL_GLOBAL type _shadow_##name=value;
201# define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
202# define OPENSSL_GLOBAL_REF(name) _shadow_##name
203# endif
204
205# ifdef _WIN32
206# ifdef _WIN64
207# define ossl_ssize_t __int64
208# define OSSL_SSIZE_MAX _I64_MAX
209# else
210# define ossl_ssize_t int
211# define OSSL_SSIZE_MAX INT_MAX
212# endif
213# endif
214
215# if defined(OPENSSL_SYS_UEFI) && !defined(ossl_ssize_t)
216# define ossl_ssize_t INTN
217# define OSSL_SSIZE_MAX MAX_INTN
218# endif
219
220# ifndef ossl_ssize_t
221# define ossl_ssize_t ssize_t
222# if defined(SSIZE_MAX)
223# define OSSL_SSIZE_MAX SSIZE_MAX
224# elif defined(_POSIX_SSIZE_MAX)
225# define OSSL_SSIZE_MAX _POSIX_SSIZE_MAX
226# endif
227# endif
228
229# ifdef DEBUG_UNUSED
230# define __owur __attribute__((__warn_unused_result__))
231# else
232# define __owur
233# endif
234
235/* Standard integer types */
236# if defined(OPENSSL_SYS_UEFI)
237typedef INT8 int8_t;
238typedef UINT8 uint8_t;
239typedef INT16 int16_t;
240typedef UINT16 uint16_t;
241typedef INT32 int32_t;
242typedef UINT32 uint32_t;
243typedef INT64 int64_t;
244typedef UINT64 uint64_t;
245# elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
246 defined(__osf__) || defined(__sgi) || defined(__hpux) || \
247 defined(OPENSSL_SYS_VMS) || defined (__OpenBSD__)
248# include <inttypes.h>
249# elif defined(_MSC_VER) && _MSC_VER<=1500
250/*
251 * minimally required typdefs for systems not supporting inttypes.h or
252 * stdint.h: currently just older VC++
253 */
254typedef signed char int8_t;
255typedef unsigned char uint8_t;
256typedef short int16_t;
257typedef unsigned short uint16_t;
258typedef int int32_t;
259typedef unsigned int uint32_t;
260typedef __int64 int64_t;
261typedef unsigned __int64 uint64_t;
262# else
263# include <stdint.h>
264# endif
265
266/* ossl_inline: portable inline definition usable in public headers */
267# if !defined(inline) && !defined(__cplusplus)
268# if defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L
269 /* just use inline */
270# define ossl_inline inline
271# elif defined(__GNUC__) && __GNUC__>=2
272# define ossl_inline __inline__
273# elif defined(_MSC_VER)
274 /*
275 * Visual Studio: inline is available in C++ only, however
276 * __inline is available for C, see
277 * http://msdn.microsoft.com/en-us/library/z8y1yy88.aspx
278 */
279# define ossl_inline __inline
280# else
281# define ossl_inline
282# endif
283# else
284# define ossl_inline inline
285# endif
286
287# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
288# define ossl_noreturn _Noreturn
289# elif defined(__GNUC__) && __GNUC__ >= 2
290# define ossl_noreturn __attribute__((noreturn))
291# else
292# define ossl_noreturn
293# endif
294
295#ifdef __cplusplus
296}
297#endif
298#endif
299