crypto/openssl/e_os2.h

   1 /* e_os2.h */
   2 /* ====================================================================
   3  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this
  18  *    software must display the following acknowledgment:
  19  *    "This product includes software developed by the OpenSSL Project
  20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21  *
  22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23  *    endorse or promote products derived from this software without
  24  *    prior written permission. For written permission, please contact
  25  *    openssl-core@openssl.org.
  26  *
  27  * 5. Products derived from this software may not be called "OpenSSL"
  28  *    nor may "OpenSSL" appear in their names without prior written
  29  *    permission of the OpenSSL Project.
  30  *
  31  * 6. Redistributions of any form whatsoever must retain the following
  32  *    acknowledgment:
  33  *    "This product includes software developed by the OpenSSL Project
  34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47  * OF THE POSSIBILITY OF SUCH DAMAGE.
  48  * ====================================================================
  49  *
  50  * This product includes cryptographic software written by Eric Young
  51  * (eay@cryptsoft.com).  This product includes software written by Tim
  52  * Hudson (tjh@cryptsoft.com).
  53  *
  54  */
  55
  56 #include <openssl/opensslconf.h>
  57
  58 #ifndef HEADER_E_OS2_H
  59 #define HEADER_E_OS2_H
  60
  61 #ifdef  __cplusplus
  62 extern "C" {
  63 #endif
  64
  65 /******************************************************************************
  66  * Detect operating systems.  This probably needs completing.
  67  * The result is that at least one OPENSSL_SYS_os macro should be defined.
  68  * However, if none is defined, Unix is assumed.
  69  **/
  70
  71 #define OPENSSL_SYS_UNIX
  72
  73 /* ----------------------- Macintosh, before MacOS X ----------------------- */
  74 #if defined(__MWERKS__) && defined(macintosh) || defined(OPENSSL_SYSNAME_MAC)
  75 # undef OPENSSL_SYS_UNIX
  76 # define OPENSSL_SYS_MACINTOSH_CLASSIC
  77 #endif
  78
  79 /* ----------------------- NetWare ----------------------------------------- */
  80 #if defined(NETWARE) || defined(OPENSSL_SYSNAME_NETWARE)
  81 # undef OPENSSL_SYS_UNIX
  82 # define OPENSSL_SYS_NETWARE
  83 #endif
  84
  85 /* ---------------------- Microsoft operating systems ---------------------- */
  86
  87 /* Note that MSDOS actually denotes 32-bit environments running on top of
  88    MS-DOS, such as DJGPP one. */
  89 #if defined(OPENSSL_SYSNAME_MSDOS)
  90 # undef OPENSSL_SYS_UNIX
  91 # define OPENSSL_SYS_MSDOS
  92 #endif
  93
  94 /* For 32 bit environment, there seems to be the CygWin environment and then
  95    all the others that try to do the same thing Microsoft does... */
  96 #if defined(OPENSSL_SYSNAME_UWIN)
  97 # undef OPENSSL_SYS_UNIX
  98 # define OPENSSL_SYS_WIN32_UWIN
  99 #else
 100 # if defined(__CYGWIN32__) || defined(OPENSSL_SYSNAME_CYGWIN32)
 101 #  undef OPENSSL_SYS_UNIX
 102 #  define OPENSSL_SYS_WIN32_CYGWIN
 103 # else
 104 #  if defined(_WIN32) || defined(OPENSSL_SYSNAME_WIN32)
 105 #   undef OPENSSL_SYS_UNIX
 106 #   define OPENSSL_SYS_WIN32
 107 #  endif
 108 #  if defined(OPENSSL_SYSNAME_WINNT)
 109 #   undef OPENSSL_SYS_UNIX
 110 #   define OPENSSL_SYS_WINNT
 111 #  endif
 112 #  if defined(OPENSSL_SYSNAME_WINCE)
 113 #   undef OPENSSL_SYS_UNIX
 114 #   define OPENSSL_SYS_WINCE
 115 #  endif
 116 # endif
 117 #endif
 118
 119 /* Anything that tries to look like Microsoft is "Windows" */
 120 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WINNT) || defined(OPENSSL_SYS_WINCE)
 121 # undef OPENSSL_SYS_UNIX
 122 # define OPENSSL_SYS_WINDOWS
 123 # ifndef OPENSSL_SYS_MSDOS
 124 #  define OPENSSL_SYS_MSDOS
 125 # endif
 126 #endif
 127
 128 /* DLL settings.  This part is a bit tough, because it's up to the application
 129    implementor how he or she will link the application, so it requires some
 130    macro to be used. */
 131 #ifdef OPENSSL_SYS_WINDOWS
 132 # ifndef OPENSSL_OPT_WINDLL
 133 #  if defined(_WINDLL) /* This is used when building OpenSSL to indicate that
 134                           DLL linkage should be used */
 135 #   define OPENSSL_OPT_WINDLL
 136 #  endif
 137 # endif
 138 #endif
 139
 140 /* -------------------------------- OpenVMS -------------------------------- */
 141 #if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYSNAME_VMS)
 142 # undef OPENSSL_SYS_UNIX
 143 # define OPENSSL_SYS_VMS
 144 # if defined(__DECC)
 145 #  define OPENSSL_SYS_VMS_DECC
 146 # elif defined(__DECCXX)
 147 #  define OPENSSL_SYS_VMS_DECC
 148 #  define OPENSSL_SYS_VMS_DECCXX
 149 # else
 150 #  define OPENSSL_SYS_VMS_NODECC
 151 # endif
 152 #endif
 153
 154 /* --------------------------------- OS/2 ---------------------------------- */
 155 #if defined(__EMX__) || defined(__OS2__)
 156 # undef OPENSSL_SYS_UNIX
 157 # define OPENSSL_SYS_OS2
 158 #endif
 159
 160 /* --------------------------------- Unix ---------------------------------- */
 161 #ifdef OPENSSL_SYS_UNIX
 162 # if defined(linux) || defined(__linux__) || defined(OPENSSL_SYSNAME_LINUX)
 163 #  define OPENSSL_SYS_LINUX
 164 # endif
 165 # ifdef OPENSSL_SYSNAME_MPE
 166 #  define OPENSSL_SYS_MPE
 167 # endif
 168 # ifdef OPENSSL_SYSNAME_SNI
 169 #  define OPENSSL_SYS_SNI
 170 # endif
 171 # ifdef OPENSSL_SYSNAME_ULTRASPARC
 172 #  define OPENSSL_SYS_ULTRASPARC
 173 # endif
 174 # ifdef OPENSSL_SYSNAME_NEWS4
 175 #  define OPENSSL_SYS_NEWS4
 176 # endif
 177 # ifdef OPENSSL_SYSNAME_MACOSX
 178 #  define OPENSSL_SYS_MACOSX
 179 # endif
 180 # ifdef OPENSSL_SYSNAME_MACOSX_RHAPSODY
 181 #  define OPENSSL_SYS_MACOSX_RHAPSODY
 182 #  define OPENSSL_SYS_MACOSX
 183 # endif
 184 # ifdef OPENSSL_SYSNAME_SUNOS
 185 #  define OPENSSL_SYS_SUNOS
 186 #endif
 187 # if defined(_CRAY) || defined(OPENSSL_SYSNAME_CRAY)
 188 #  define OPENSSL_SYS_CRAY
 189 # endif
 190 # if defined(_AIX) || defined(OPENSSL_SYSNAME_AIX)
 191 #  define OPENSSL_SYS_AIX
 192 # endif
 193 #endif
 194
 195 /* --------------------------------- VOS ----------------------------------- */
 196 #ifdef OPENSSL_SYSNAME_VOS
 197 # define OPENSSL_SYS_VOS
 198 #endif
 199
 200 /* ------------------------------- VxWorks --------------------------------- */
 201 #ifdef OPENSSL_SYSNAME_VXWORKS
 202 # define OPENSSL_SYS_VXWORKS
 203 #endif
 204
 205 /**
 206  * That's it for OS-specific stuff
 207  *****************************************************************************/
 208
 209
 210 /* Specials for I/O an exit */
 211 #ifdef OPENSSL_SYS_MSDOS
 212 # define OPENSSL_UNISTD_IO <io.h>
 213 # define OPENSSL_DECLARE_EXIT extern void exit(int);
 214 #else
 215 # define OPENSSL_UNISTD_IO OPENSSL_UNISTD
 216 # define OPENSSL_DECLARE_EXIT /* declared in unistd.h */
 217 #endif
 218
 219 /* Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN, to define and declare
 220    certain global symbols that, with some compilers under VMS, have to be
 221    defined and declared explicitely with globaldef and globalref.
 222    Definitions of OPENSSL_EXPORT and OPENSSL_IMPORT, to define and declare
 223    DLL exports and imports for compilers under Win32.  These are a little
 224    more complicated to use.  Basically, for any library that exports some
 225    global variables, the following code must be present in the header file
 226    that declares them, before OPENSSL_EXTERN is used:
 227
 228    #ifdef SOME_BUILD_FLAG_MACRO
 229    # undef OPENSSL_EXTERN
 230    # define OPENSSL_EXTERN OPENSSL_EXPORT
 231    #endif
 232
 233    The default is to have OPENSSL_EXPORT, OPENSSL_IMPORT and OPENSSL_GLOBAL
 234    have some generally sensible values, and for OPENSSL_EXTERN to have the
 235    value OPENSSL_IMPORT.
 236 */
 237
 238 #if defined(OPENSSL_SYS_VMS_NODECC)
 239 # define OPENSSL_EXPORT globalref
 240 # define OPENSSL_IMPORT globalref
 241 # define OPENSSL_GLOBAL globaldef
 242 #elif defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
 243 # define OPENSSL_EXPORT extern __declspec(dllexport)
 244 # define OPENSSL_IMPORT extern __declspec(dllimport)
 245 # define OPENSSL_GLOBAL
 246 #else
 247 # define OPENSSL_EXPORT extern
 248 # define OPENSSL_IMPORT extern
 249 # define OPENSSL_GLOBAL
 250 #endif
 251 #define OPENSSL_EXTERN OPENSSL_IMPORT
 252
 253 /* Macros to allow global variables to be reached through function calls when
 254    required (if a shared library version requvres it, for example.
 255    The way it's done allows definitions like this:
 256
 257         // in foobar.c
 258         OPENSSL_IMPLEMENT_GLOBAL(int,foobar) = 0;
 259         // in foobar.h
 260         OPENSSL_DECLARE_GLOBAL(int,foobar);
 261         #define foobar OPENSSL_GLOBAL_REF(foobar)
 262 */
 263 #ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
 264 # define OPENSSL_IMPLEMENT_GLOBAL(type,name)                         \
 265         extern type _hide_##name;                                    \
 266         type *_shadow_##name(void) { return &_hide_##name; }         \
 267         static type _hide_##name
 268 # define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
 269 # define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
 270 #else
 271 # define OPENSSL_IMPLEMENT_GLOBAL(type,name) OPENSSL_GLOBAL type _shadow_##name
 272 # define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
 273 # define OPENSSL_GLOBAL_REF(name) _shadow_##name
 274 #endif
 275
 276 #ifdef  __cplusplus
 277 }
 278 #endif
 279 #endif