include/openssl/e_os2.h

   1 /*
   2  * Copyright 1995-2018 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
  10 #ifndef OPENSSL_E_OS2_H
  11 # define OPENSSL_E_OS2_H
  12 # pragma once
  13
  14 # include <openssl/macros.h>
  15 # if !OPENSSL_API_3
  16 #  define HEADER_E_OS2_H
  17 # endif
  18
  19 # include <openssl/opensslconf.h>
  20
  21 #ifdef  __cplusplus
  22 extern "C" {
  23 #endif
  24
  25 /******************************************************************************
  26  * Detect operating systems.  This probably needs completing.
  27  * The result is that at least one OPENSSL_SYS_os macro should be defined.
  28  * However, if none is defined, Unix is assumed.
  29  **/
  30
  31 # define OPENSSL_SYS_UNIX
  32
  33 /* --------------------- Microsoft operating systems ---------------------- */
  34
  35 /*
  36  * Note that MSDOS actually denotes 32-bit environments running on top of
  37  * MS-DOS, such as DJGPP one.
  38  */
  39 # if defined(OPENSSL_SYS_MSDOS)
  40 #  undef OPENSSL_SYS_UNIX
  41 # endif
  42
  43 /*
  44  * For 32 bit environment, there seems to be the CygWin environment and then
  45  * all the others that try to do the same thing Microsoft does...
  46  */
  47 /*
  48  * UEFI lives here because it might be built with a Microsoft toolchain and
  49  * we need to avoid the false positive match on Windows.
  50  */
  51 # if defined(OPENSSL_SYS_UEFI)
  52 #  undef OPENSSL_SYS_UNIX
  53 # elif defined(OPENSSL_SYS_UWIN)
  54 #  undef OPENSSL_SYS_UNIX
  55 #  define OPENSSL_SYS_WIN32_UWIN
  56 # else
  57 #  if defined(__CYGWIN__) || defined(OPENSSL_SYS_CYGWIN)
  58 #   define OPENSSL_SYS_WIN32_CYGWIN
  59 #  else
  60 #   if defined(_WIN32) || defined(OPENSSL_SYS_WIN32)
  61 #    undef OPENSSL_SYS_UNIX
  62 #    if !defined(OPENSSL_SYS_WIN32)
  63 #     define OPENSSL_SYS_WIN32
  64 #    endif
  65 #   endif
  66 #   if defined(_WIN64) || defined(OPENSSL_SYS_WIN64)
  67 #    undef OPENSSL_SYS_UNIX
  68 #    if !defined(OPENSSL_SYS_WIN64)
  69 #     define OPENSSL_SYS_WIN64
  70 #    endif
  71 #   endif
  72 #   if defined(OPENSSL_SYS_WINNT)
  73 #    undef OPENSSL_SYS_UNIX
  74 #   endif
  75 #   if defined(OPENSSL_SYS_WINCE)
  76 #    undef OPENSSL_SYS_UNIX
  77 #   endif
  78 #  endif
  79 # endif
  80
  81 /* Anything that tries to look like Microsoft is "Windows" */
  82 # if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN64) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
  83 #  undef OPENSSL_SYS_UNIX
  84 #  define OPENSSL_SYS_WINDOWS
  85 #  ifndef OPENSSL_SYS_MSDOS
  86 #   define OPENSSL_SYS_MSDOS
  87 #  endif
  88 # endif
  89
  90 /*
  91  * DLL settings.  This part is a bit tough, because it's up to the
  92  * application implementor how he or she will link the application, so it
  93  * requires some macro to be used.
  94  */
  95 # ifdef OPENSSL_SYS_WINDOWS
  96 #  ifndef OPENSSL_OPT_WINDLL
  97 #   if defined(_WINDLL)         /* This is used when building OpenSSL to
  98                                  * indicate that DLL linkage should be used */
  99 #    define OPENSSL_OPT_WINDLL
 100 #   endif
 101 #  endif
 102 # endif
 103
 104 /* ------------------------------- OpenVMS -------------------------------- */
 105 # if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYS_VMS)
 106 #  if !defined(OPENSSL_SYS_VMS)
 107 #   undef OPENSSL_SYS_UNIX
 108 #  endif
 109 #  define OPENSSL_SYS_VMS
 110 #  if defined(__DECC)
 111 #   define OPENSSL_SYS_VMS_DECC
 112 #  elif defined(__DECCXX)
 113 #   define OPENSSL_SYS_VMS_DECC
 114 #   define OPENSSL_SYS_VMS_DECCXX
 115 #  else
 116 #   define OPENSSL_SYS_VMS_NODECC
 117 #  endif
 118 # endif
 119
 120 /* -------------------------------- Unix ---------------------------------- */
 121 # ifdef OPENSSL_SYS_UNIX
 122 #  if defined(linux) || defined(__linux__) && !defined(OPENSSL_SYS_LINUX)
 123 #   define OPENSSL_SYS_LINUX
 124 #  endif
 125 #  if defined(_AIX) && !defined(OPENSSL_SYS_AIX)
 126 #   define OPENSSL_SYS_AIX
 127 #  endif
 128 # endif
 129
 130 /* -------------------------------- VOS ----------------------------------- */
 131 # if defined(__VOS__) && !defined(OPENSSL_SYS_VOS)
 132 #  define OPENSSL_SYS_VOS
 133 #  ifdef __HPPA__
 134 #   define OPENSSL_SYS_VOS_HPPA
 135 #  endif
 136 #  ifdef __IA32__
 137 #   define OPENSSL_SYS_VOS_IA32
 138 #  endif
 139 # endif
 140
 141 /**
 142  * That's it for OS-specific stuff
 143  *****************************************************************************/
 144
 145 /*-
 146  * OPENSSL_EXTERN is normally used to declare a symbol with possible extra
 147  * attributes to handle its presence in a shared library.
 148  * OPENSSL_EXPORT is used to define a symbol with extra possible attributes
 149  * to make it visible in a shared library.
 150  * Care needs to be taken when a header file is used both to declare and
 151  * define symbols.  Basically, for any library that exports some global
 152  * variables, the following code must be present in the header file that
 153  * declares them, before OPENSSL_EXTERN is used:
 154  *
 155  * #ifdef SOME_BUILD_FLAG_MACRO
 156  * # undef OPENSSL_EXTERN
 157  * # define OPENSSL_EXTERN OPENSSL_EXPORT
 158  * #endif
 159  *
 160  * The default is to have OPENSSL_EXPORT and OPENSSL_EXTERN
 161  * have some generally sensible values.
 162  */
 163
 164 # if defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
 165 #  define OPENSSL_EXPORT extern __declspec(dllexport)
 166 #  define OPENSSL_EXTERN extern __declspec(dllimport)
 167 # else
 168 #  define OPENSSL_EXPORT extern
 169 #  define OPENSSL_EXTERN extern
 170 # endif
 171
 172 # ifdef _WIN32
 173 #  ifdef _WIN64
 174 #   define ossl_ssize_t __int64
 175 #   define OSSL_SSIZE_MAX _I64_MAX
 176 #  else
 177 #   define ossl_ssize_t int
 178 #   define OSSL_SSIZE_MAX INT_MAX
 179 #  endif
 180 # endif
 181
 182 # if defined(OPENSSL_SYS_UEFI) && !defined(ossl_ssize_t)
 183 #  define ossl_ssize_t INTN
 184 #  define OSSL_SSIZE_MAX MAX_INTN
 185 # endif
 186
 187 # ifndef ossl_ssize_t
 188 #  define ossl_ssize_t ssize_t
 189 #  if defined(SSIZE_MAX)
 190 #   define OSSL_SSIZE_MAX SSIZE_MAX
 191 #  elif defined(_POSIX_SSIZE_MAX)
 192 #   define OSSL_SSIZE_MAX _POSIX_SSIZE_MAX
 193 #  else
 194 #   define OSSL_SSIZE_MAX ((ssize_t)(SIZE_MAX>>1))
 195 #  endif
 196 # endif
 197
 198 # ifdef DEBUG_UNUSED
 199 #  define __owur __attribute__((__warn_unused_result__))
 200 # else
 201 #  define __owur
 202 # endif
 203
 204 /* Standard integer types */
 205 # define OPENSSL_NO_INTTYPES_H
 206 # define OPENSSL_NO_STDINT_H
 207 # if defined(OPENSSL_SYS_UEFI)
 208 typedef INT8 int8_t;
 209 typedef UINT8 uint8_t;
 210 typedef INT16 int16_t;
 211 typedef UINT16 uint16_t;
 212 typedef INT32 int32_t;
 213 typedef UINT32 uint32_t;
 214 typedef INT64 int64_t;
 215 typedef UINT64 uint64_t;
 216 # elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
 217      defined(__osf__) || defined(__sgi) || defined(__hpux) || \
 218      defined(OPENSSL_SYS_VMS) || defined (__OpenBSD__)
 219 #  include <inttypes.h>
 220 #  undef OPENSSL_NO_INTTYPES_H
 221 /* Because the specs say that inttypes.h includes stdint.h if present */
 222 #  undef OPENSSL_NO_STDINT_H
 223 # elif defined(_MSC_VER) && _MSC_VER<=1500
 224 /*
 225  * minimally required typdefs for systems not supporting inttypes.h or
 226  * stdint.h: currently just older VC++
 227  */
 228 typedef signed char int8_t;
 229 typedef unsigned char uint8_t;
 230 typedef short int16_t;
 231 typedef unsigned short uint16_t;
 232 typedef int int32_t;
 233 typedef unsigned int uint32_t;
 234 typedef __int64 int64_t;
 235 typedef unsigned __int64 uint64_t;
 236 # else
 237 #  include <stdint.h>
 238 #  undef OPENSSL_NO_STDINT_H
 239 # endif
 240
 241 /* ossl_inline: portable inline definition usable in public headers */
 242 # if !defined(inline) && !defined(__cplusplus)
 243 #  if defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L
 244    /* just use inline */
 245 #   define ossl_inline inline
 246 #  elif defined(__GNUC__) && __GNUC__>=2
 247 #   define ossl_inline __inline__
 248 #  elif defined(_MSC_VER)
 249   /*
 250    * Visual Studio: inline is available in C++ only, however
 251    * __inline is available for C, see
 252    * http://msdn.microsoft.com/en-us/library/z8y1yy88.aspx
 253    */
 254 #   define ossl_inline __inline
 255 #  else
 256 #   define ossl_inline
 257 #  endif
 258 # else
 259 #  define ossl_inline inline
 260 # endif
 261
 262 # if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
 263 #  define ossl_noreturn _Noreturn
 264 # elif defined(__GNUC__) && __GNUC__ >= 2
 265 #  define ossl_noreturn __attribute__((noreturn))
 266 # else
 267 #  define ossl_noreturn
 268 # endif
 269
 270 /* ossl_unused: portable unused attribute for use in public headers */
 271 # if defined(__GNUC__)
 272 #  define ossl_unused __attribute__((unused))
 273 # else
 274 #  define ossl_unused
 275 # endif
 276
 277 #ifdef  __cplusplus
 278 }
 279 #endif
 280 #endif