1/*
2 * Copyright 1995-2019 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# define OPENSSL_SYS_WIN32_CYGWIN
53# else
54# if defined(_WIN32) || defined(OPENSSL_SYS_WIN32)
55# undef OPENSSL_SYS_UNIX
56# if !defined(OPENSSL_SYS_WIN32)
57# define OPENSSL_SYS_WIN32
58# endif
59# endif
60# if defined(_WIN64) || defined(OPENSSL_SYS_WIN64)
61# undef OPENSSL_SYS_UNIX
62# if !defined(OPENSSL_SYS_WIN64)
63# define OPENSSL_SYS_WIN64
64# endif
65# endif
66# if defined(OPENSSL_SYS_WINNT)
67# undef OPENSSL_SYS_UNIX
68# endif
69# if defined(OPENSSL_SYS_WINCE)
70# undef OPENSSL_SYS_UNIX
71# endif
72# endif
73# endif
74
75/* Anything that tries to look like Microsoft is "Windows" */
76# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN64) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
77# undef OPENSSL_SYS_UNIX
78# define OPENSSL_SYS_WINDOWS
79# ifndef OPENSSL_SYS_MSDOS
80# define OPENSSL_SYS_MSDOS
81# endif
82# endif
83
84/*
85 * DLL settings. This part is a bit tough, because it's up to the
86 * application implementor how he or she will link the application, so it
87 * requires some macro to be used.
88 */
89# ifdef OPENSSL_SYS_WINDOWS
90# ifndef OPENSSL_OPT_WINDLL
91# if defined(_WINDLL) /* This is used when building OpenSSL to
92 * indicate that DLL linkage should be used */
93# define OPENSSL_OPT_WINDLL
94# endif
95# endif
96# endif
97
98/* ------------------------------- OpenVMS -------------------------------- */
99# if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYS_VMS)
100# if !defined(OPENSSL_SYS_VMS)
101# undef OPENSSL_SYS_UNIX
102# endif
103# define OPENSSL_SYS_VMS
104# if defined(__DECC)
105# define OPENSSL_SYS_VMS_DECC
106# elif defined(__DECCXX)
107# define OPENSSL_SYS_VMS_DECC
108# define OPENSSL_SYS_VMS_DECCXX
109# else
110# define OPENSSL_SYS_VMS_NODECC
111# endif
112# endif
113
114/* -------------------------------- Unix ---------------------------------- */
115# ifdef OPENSSL_SYS_UNIX
116# if defined(linux) || defined(__linux__) && !defined(OPENSSL_SYS_LINUX)
117# define OPENSSL_SYS_LINUX
118# endif
119# if defined(_AIX) && !defined(OPENSSL_SYS_AIX)
120# define OPENSSL_SYS_AIX
121# endif
122# endif
123
124/* -------------------------------- VOS ----------------------------------- */
125# if defined(__VOS__) && !defined(OPENSSL_SYS_VOS)
126# define OPENSSL_SYS_VOS
127# ifdef __HPPA__
128# define OPENSSL_SYS_VOS_HPPA
129# endif
130# ifdef __IA32__
131# define OPENSSL_SYS_VOS_IA32
132# endif
133# endif
134
135/**
136 * That's it for OS-specific stuff
137 *****************************************************************************/
138
139/* Specials for I/O an exit */
140# ifdef OPENSSL_SYS_MSDOS
141# define OPENSSL_UNISTD_IO <io.h>
142# define OPENSSL_DECLARE_EXIT extern void exit(int);
143# else
144# define OPENSSL_UNISTD_IO OPENSSL_UNISTD
145# define OPENSSL_DECLARE_EXIT /* declared in unistd.h */
146# endif
147
148/*-
149 * OPENSSL_EXTERN is normally used to declare a symbol with possible extra
150 * attributes to handle its presence in a shared library.
151 * OPENSSL_EXPORT is used to define a symbol with extra possible attributes
152 * to make it visible in a shared library.
153 * Care needs to be taken when a header file is used both to declare and
154 * define symbols. Basically, for any library that exports some global
155 * variables, the following code must be present in the header file that
156 * declares them, before OPENSSL_EXTERN is used:
157 *
158 * #ifdef SOME_BUILD_FLAG_MACRO
159 * # undef OPENSSL_EXTERN
160 * # define OPENSSL_EXTERN OPENSSL_EXPORT
161 * #endif
162 *
163 * The default is to have OPENSSL_EXPORT and OPENSSL_EXTERN
164 * have some generally sensible values.
165 */
166
167# if defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
168# define OPENSSL_EXPORT extern __declspec(dllexport)
169# define OPENSSL_EXTERN extern __declspec(dllimport)
170# else
171# define OPENSSL_EXPORT extern
172# define OPENSSL_EXTERN extern
173# endif
174
175/*-
176 * Macros to allow global variables to be reached through function calls when
177 * required (if a shared library version requires it, for example.
178 * The way it's done allows definitions like this:
179 *
180 * // in foobar.c
181 * OPENSSL_IMPLEMENT_GLOBAL(int,foobar,0)
182 * // in foobar.h
183 * OPENSSL_DECLARE_GLOBAL(int,foobar);
184 * #define foobar OPENSSL_GLOBAL_REF(foobar)
185 */
186# ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
187# define OPENSSL_IMPLEMENT_GLOBAL(type,name,value) \
188 type *_shadow_##name(void) \
189 { static type _hide_##name=value; return &_hide_##name; }
190# define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
191# define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
192# else
193# define OPENSSL_IMPLEMENT_GLOBAL(type,name,value) type _shadow_##name=value;
194# define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
195# define OPENSSL_GLOBAL_REF(name) _shadow_##name
196# endif
197
198# ifdef _WIN32
199# ifdef _WIN64
200# define ossl_ssize_t __int64
201# define OSSL_SSIZE_MAX _I64_MAX
202# else
203# define ossl_ssize_t int
204# define OSSL_SSIZE_MAX INT_MAX
205# endif
206# endif
207
208# if defined(OPENSSL_SYS_UEFI) && !defined(ossl_ssize_t)
209# define ossl_ssize_t INTN
210# define OSSL_SSIZE_MAX MAX_INTN
211# endif
212
213# ifndef ossl_ssize_t
214# define ossl_ssize_t ssize_t
215# if defined(SSIZE_MAX)
216# define OSSL_SSIZE_MAX SSIZE_MAX
217# elif defined(_POSIX_SSIZE_MAX)
218# define OSSL_SSIZE_MAX _POSIX_SSIZE_MAX
219# else
220# define OSSL_SSIZE_MAX ((ssize_t)(SIZE_MAX>>1))
221# endif
222# endif
223
224# ifdef DEBUG_UNUSED
225# define __owur __attribute__((__warn_unused_result__))
226# else
227# define __owur
228# endif
229
230/* Standard integer types */
231# if defined(OPENSSL_SYS_UEFI)
232typedef INT8 int8_t;
233typedef UINT8 uint8_t;
234typedef INT16 int16_t;
235typedef UINT16 uint16_t;
236typedef INT32 int32_t;
237typedef UINT32 uint32_t;
238typedef INT64 int64_t;
239typedef UINT64 uint64_t;
240# elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
241 defined(__osf__) || defined(__sgi) || defined(__hpux) || \
242 defined(OPENSSL_SYS_VMS) || defined (__OpenBSD__)
243# include <inttypes.h>
244# elif defined(_MSC_VER) && _MSC_VER<=1500
245/*
246 * minimally required typdefs for systems not supporting inttypes.h or
247 * stdint.h: currently just older VC++
248 */
249typedef signed char int8_t;
250typedef unsigned char uint8_t;
251typedef short int16_t;
252typedef unsigned short uint16_t;
253typedef int int32_t;
254typedef unsigned int uint32_t;
255typedef __int64 int64_t;
256typedef unsigned __int64 uint64_t;
257# else
258# include <stdint.h>
259# endif
260
261/* ossl_inline: portable inline definition usable in public headers */
262# if !defined(inline) && !defined(__cplusplus)
263# if defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L
264 /* just use inline */
265# define ossl_inline inline
266# elif defined(__GNUC__) && __GNUC__>=2
267# define ossl_inline __inline__
268# elif defined(_MSC_VER)
269 /*
270 * Visual Studio: inline is available in C++ only, however
271 * __inline is available for C, see
272 * http://msdn.microsoft.com/en-us/library/z8y1yy88.aspx
273 */
274# define ossl_inline __inline
275# else
276# define ossl_inline
277# endif
278# else
279# define ossl_inline inline
280# endif
281
282# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
283# define ossl_noreturn _Noreturn
284# elif defined(__GNUC__) && __GNUC__ >= 2
285# define ossl_noreturn __attribute__((noreturn))
286# else
287# define ossl_noreturn
288# endif
289
290/* ossl_unused: portable unused attribute for use in public headers */
291# if defined(__GNUC__)
292# define ossl_unused __attribute__((unused))
293# else
294# define ossl_unused
295# endif
296
297#ifdef __cplusplus
298}
299#endif
300#endif
301