aboutsummaryrefslogtreecommitdiffstats
path: root/include/openssl/e_os2.h
blob: cf308eee2cd252d157c30929af0fd11378752588 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
/*
 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_E_OS2_H
# define HEADER_E_OS2_H

# include <openssl/opensslconf.h>

#ifdef  __cplusplus
extern "C" {
#endif

/******************************************************************************
 * Detect operating systems.  This probably needs completing.
 * The result is that at least one OPENSSL_SYS_os macro should be defined.
 * However, if none is defined, Unix is assumed.
 **/

# define OPENSSL_SYS_UNIX

/* --------------------- Microsoft operating systems ---------------------- */

/*
 * Note that MSDOS actually denotes 32-bit environments running on top of
 * MS-DOS, such as DJGPP one.
 */
# if defined(OPENSSL_SYS_MSDOS)
#  undef OPENSSL_SYS_UNIX
# endif

/*
 * For 32 bit environment, there seems to be the CygWin environment and then
 * all the others that try to do the same thing Microsoft does...
 */
/*
 * UEFI lives here because it might be built with a Microsoft toolchain and
 * we need to avoid the false positive match on Windows.
 */
# if defined(OPENSSL_SYS_UEFI)
#  undef OPENSSL_SYS_UNIX
# elif defined(OPENSSL_SYS_UWIN)
#  undef OPENSSL_SYS_UNIX
#  define OPENSSL_SYS_WIN32_UWIN
# else
#  if defined(__CYGWIN__) || defined(OPENSSL_SYS_CYGWIN)
#   define OPENSSL_SYS_WIN32_CYGWIN
#  else
#   if defined(_WIN32) || defined(OPENSSL_SYS_WIN32)
#    undef OPENSSL_SYS_UNIX
#    if !defined(OPENSSL_SYS_WIN32)
#     define OPENSSL_SYS_WIN32
#    endif
#   endif
#   if defined(_WIN64) || defined(OPENSSL_SYS_WIN64)
#    undef OPENSSL_SYS_UNIX
#    if !defined(OPENSSL_SYS_WIN64)
#     define OPENSSL_SYS_WIN64
#    endif
#   endif
#   if defined(OPENSSL_SYS_WINNT)
#    undef OPENSSL_SYS_UNIX
#   endif
#   if defined(OPENSSL_SYS_WINCE)
#    undef OPENSSL_SYS_UNIX
#   endif
#  endif
# endif

/* Anything that tries to look like Microsoft is "Windows" */
# if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN64) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
#  undef OPENSSL_SYS_UNIX
#  define OPENSSL_SYS_WINDOWS
#  ifndef OPENSSL_SYS_MSDOS
#   define OPENSSL_SYS_MSDOS
#  endif
# endif

/*
 * DLL settings.  This part is a bit tough, because it's up to the
 * application implementor how he or she will link the application, so it
 * requires some macro to be used.
 */
# ifdef OPENSSL_SYS_WINDOWS
#  ifndef OPENSSL_OPT_WINDLL
#   if defined(_WINDLL)         /* This is used when building OpenSSL to
                                 * indicate that DLL linkage should be used */
#    define OPENSSL_OPT_WINDLL
#   endif
#  endif
# endif

/* ------------------------------- OpenVMS -------------------------------- */
# if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYS_VMS)
#  if !defined(OPENSSL_SYS_VMS)
#   undef OPENSSL_SYS_UNIX
#  endif
#  define OPENSSL_SYS_VMS
#  if defined(__DECC)
#   define OPENSSL_SYS_VMS_DECC
#  elif defined(__DECCXX)
#   define OPENSSL_SYS_VMS_DECC
#   define OPENSSL_SYS_VMS_DECCXX
#  else
#   define OPENSSL_SYS_VMS_NODECC
#  endif
# endif

/* -------------------------------- Unix ---------------------------------- */
# ifdef OPENSSL_SYS_UNIX
#  if defined(linux) || defined(__linux__) && !defined(OPENSSL_SYS_LINUX)
#   define OPENSSL_SYS_LINUX
#  endif
#  if defined(_AIX) && !defined(OPENSSL_SYS_AIX)
#   define OPENSSL_SYS_AIX
#  endif
# endif

/* -------------------------------- VOS ----------------------------------- */
# if defined(__VOS__) && !defined(OPENSSL_SYS_VOS)
#  define OPENSSL_SYS_VOS
#  ifdef __HPPA__
#   define OPENSSL_SYS_VOS_HPPA
#  endif
#  ifdef __IA32__
#   define OPENSSL_SYS_VOS_IA32
#  endif
# endif

/**
 * That's it for OS-specific stuff
 *****************************************************************************/

/* Specials for I/O an exit */
# ifdef OPENSSL_SYS_MSDOS
#  define OPENSSL_UNISTD_IO <io.h>
#  define OPENSSL_DECLARE_EXIT extern void exit(int);
# else
#  define OPENSSL_UNISTD_IO OPENSSL_UNISTD
#  define OPENSSL_DECLARE_EXIT  /* declared in unistd.h */
# endif

/*-
 * OPENSSL_EXTERN is normally used to declare a symbol with possible extra
 * attributes to handle its presence in a shared library.
 * OPENSSL_EXPORT is used to define a symbol with extra possible attributes
 * to make it visible in a shared library.
 * Care needs to be taken when a header file is used both to declare and
 * define symbols.  Basically, for any library that exports some global
 * variables, the following code must be present in the header file that
 * declares them, before OPENSSL_EXTERN is used:
 *
 * #ifdef SOME_BUILD_FLAG_MACRO
 * # undef OPENSSL_EXTERN
 * # define OPENSSL_EXTERN OPENSSL_EXPORT
 * #endif
 *
 * The default is to have OPENSSL_EXPORT and OPENSSL_EXTERN
 * have some generally sensible values.
 */

# if defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
#  define OPENSSL_EXPORT extern __declspec(dllexport)
#  define OPENSSL_EXTERN extern __declspec(dllimport)
# else
#  define OPENSSL_EXPORT extern
#  define OPENSSL_EXTERN extern
# endif

/*-
 * Macros to allow global variables to be reached through function calls when
 * required (if a shared library version requires it, for example.
 * The way it's done allows definitions like this:
 *
 *      // in foobar.c
 *      OPENSSL_IMPLEMENT_GLOBAL(int,foobar,0)
 *      // in foobar.h
 *      OPENSSL_DECLARE_GLOBAL(int,foobar);
 *      #define foobar OPENSSL_GLOBAL_REF(foobar)
 */
# ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
#  define OPENSSL_IMPLEMENT_GLOBAL(type,name,value)                      \
        type *_shadow_##name(void)                                      \
        { static type _hide_##name=value; return &_hide_##name; }
#  define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
#  define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
# else
#  define OPENSSL_IMPLEMENT_GLOBAL(type,name,value) type _shadow_##name=value;
#  define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
#  define OPENSSL_GLOBAL_REF(name) _shadow_##name
# endif

# ifdef _WIN32
#  ifdef _WIN64
#   define ossl_ssize_t __int64
#   define OSSL_SSIZE_MAX _I64_MAX
#  else
#   define ossl_ssize_t int
#   define OSSL_SSIZE_MAX INT_MAX
#  endif
# endif

# if defined(OPENSSL_SYS_UEFI) && !defined(ossl_ssize_t)
#  define ossl_ssize_t INTN
#  define OSSL_SSIZE_MAX MAX_INTN
# endif

# ifndef ossl_ssize_t
#  define ossl_ssize_t ssize_t
#  if defined(SSIZE_MAX)
#   define OSSL_SSIZE_MAX SSIZE_MAX
#  elif defined(_POSIX_SSIZE_MAX)
#   define OSSL_SSIZE_MAX _POSIX_SSIZE_MAX
#  else
#   define OSSL_SSIZE_MAX ((ssize_t)(SIZE_MAX>>1))
#  endif
# endif

# ifdef DEBUG_UNUSED
#  define __owur __attribute__((__warn_unused_result__))
# else
#  define __owur
# endif

/* Standard integer types */
# if defined(OPENSSL_SYS_UEFI)
typedef INT8 int8_t;
typedef UINT8 uint8_t;
typedef INT16 int16_t;
typedef UINT16 uint16_t;
typedef INT32 int32_t;
typedef UINT32 uint32_t;
typedef INT64 int64_t;
typedef UINT64 uint64_t;
# elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
     defined(__osf__) || defined(__sgi) || defined(__hpux) || \
     defined(OPENSSL_SYS_VMS) || defined (__OpenBSD__)
#  include <inttypes.h>
# elif defined(_MSC_VER) && _MSC_VER<1600
/*
 * minimally required typdefs for systems not supporting inttypes.h or
 * stdint.h: currently just older VC++
 */
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef short int16_t;
typedef unsigned short uint16_t;
typedef int int32_t;
typedef unsigned int uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
# else
#  include <stdint.h>
# endif

/* ossl_inline: portable inline definition usable in public headers */
# if !defined(inline) && !defined(__cplusplus)
#  if defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L
   /* just use inline */
#   define ossl_inline inline
#  elif defined(__GNUC__) && __GNUC__>=2
#   define ossl_inline __inline__
#  elif defined(_MSC_VER)
  /*
   * Visual Studio: inline is available in C++ only, however
   * __inline is available for C, see
   * http://msdn.microsoft.com/en-us/library/z8y1yy88.aspx
   */
#   define ossl_inline __inline
#  else
#   define ossl_inline
#  endif
# else
#  define ossl_inline inline
# endif

# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#  define ossl_noreturn _Noreturn
# elif defined(__GNUC__) && __GNUC__ >= 2
#  define ossl_noreturn __attribute__((noreturn))
# else
#  define ossl_noreturn
# endif

/* ossl_unused: portable unused attribute for use in public headers */
# if defined(__GNUC__)
#  define ossl_unused __attribute__((unused))
# else
#  define ossl_unused
# endif

#ifdef  __cplusplus
}
#endif
#endif