include/openssl/e_os2.h

   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
  16 extern "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  * OPENSSL_EXTERN is normally used to declare a symbol with possible extra
 151  * attributes to handle its presence in a shared library.
 152  * OPENSSL_EXPORT is used to define a symbol with extra possible attributes
 153  * to make it visible in a shared library.
 154  * Care needs to be taken when a header file is used both to declare and
 155  * define symbols.  Basically, for any library that exports some global
 156  * variables, the following code must be present in the header file that
 157  * 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 and OPENSSL_EXTERN
 165  * have some generally sensible values.
 166  */
 167
 168 # if defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
 169 #  define OPENSSL_EXPORT extern __declspec(dllexport)
 170 #  define OPENSSL_EXTERN extern __declspec(dllimport)
 171 # else
 172 #  define OPENSSL_EXPORT extern
 173 #  define OPENSSL_EXTERN extern
 174 # endif
 175
 176 /*-
 177  * Macros to allow global variables to be reached through function calls when
 178  * required (if a shared library version requires it, for example.
 179  * The way it's done allows definitions like this:
 180  *
 181  *      // in foobar.c
 182  *      OPENSSL_IMPLEMENT_GLOBAL(int,foobar,0)
 183  *      // in foobar.h
 184  *      OPENSSL_DECLARE_GLOBAL(int,foobar);
 185  *      #define foobar OPENSSL_GLOBAL_REF(foobar)
 186  */
 187 # ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
 188 #  define OPENSSL_IMPLEMENT_GLOBAL(type,name,value)                      \
 189         type *_shadow_##name(void)                                      \
 190         { static type _hide_##name=value; return &_hide_##name; }
 191 #  define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
 192 #  define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
 193 # else
 194 #  define OPENSSL_IMPLEMENT_GLOBAL(type,name,value) type _shadow_##name=value;
 195 #  define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
 196 #  define OPENSSL_GLOBAL_REF(name) _shadow_##name
 197 # endif
 198
 199 # ifdef _WIN32
 200 #  ifdef _WIN64
 201 #   define ossl_ssize_t __int64
 202 #   define OSSL_SSIZE_MAX _I64_MAX
 203 #  else
 204 #   define ossl_ssize_t int
 205 #   define OSSL_SSIZE_MAX INT_MAX
 206 #  endif
 207 # endif
 208
 209 # if defined(OPENSSL_SYS_UEFI) && !defined(ssize_t)
 210 #  define ossl_ssize_t int
 211 #  define OSSL_SSIZE_MAX INT_MAX
 212 # endif
 213
 214 # ifndef ossl_ssize_t
 215 #  define ossl_ssize_t ssize_t
 216 #  if defined(SSIZE_MAX)
 217 #   define OSSL_SSIZE_MAX SSIZE_MAX
 218 #  elif defined(_POSIX_SSIZE_MAX)
 219 #   define OSSL_SSIZE_MAX _POSIX_SSIZE_MAX
 220 #  endif
 221 # endif
 222
 223 # ifdef DEBUG_UNUSED
 224 #  define __owur __attribute__((__warn_unused_result__))
 225 # else
 226 #  define __owur
 227 # endif
 228
 229 /* Standard integer types */
 230 # if defined(OPENSSL_SYS_UEFI)
 231 typedef INT8 int8_t;
 232 typedef UINT8 uint8_t;
 233 typedef INT16 int16_t;
 234 typedef UINT16 uint16_t;
 235 typedef INT32 int32_t;
 236 typedef UINT32 uint32_t;
 237 typedef INT64 int64_t;
 238 typedef UINT64 uint64_t;
 239 #  define PRIu64 "%Lu"
 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  */
 249 typedef signed char int8_t;
 250 typedef unsigned char uint8_t;
 251 typedef short int16_t;
 252 typedef unsigned short uint16_t;
 253 typedef int int32_t;
 254 typedef unsigned int uint32_t;
 255 typedef __int64 int64_t;
 256 typedef 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 #ifdef  __cplusplus
 291 }
 292 #endif
 293 #endif