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 /*-
 220  * Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN, to define and declare
 221  * certain global symbols that, with some compilers under VMS, have to be
 222  * defined and declared explicitely with globaldef and globalref.
 223  * Definitions of OPENSSL_EXPORT and OPENSSL_IMPORT, to define and declare
 224  * DLL exports and imports for compilers under Win32.  These are a little
 225  * more complicated to use.  Basically, for any library that exports some
 226  * global variables, the following code must be present in the header file
 227  * that declares them, before OPENSSL_EXTERN is used:
 228  *
 229  * #ifdef SOME_BUILD_FLAG_MACRO
 230  * # undef OPENSSL_EXTERN
 231  * # define OPENSSL_EXTERN OPENSSL_EXPORT
 232  * #endif
 233  *
 234  * The default is to have OPENSSL_EXPORT, OPENSSL_IMPORT and OPENSSL_GLOBAL
 235  * have some generally sensible values, and for OPENSSL_EXTERN to have the
 236  * value OPENSSL_IMPORT.
 237  */
 238
 239 #if defined(OPENSSL_SYS_VMS_NODECC)
 240 # define OPENSSL_EXPORT globalref
 241 # define OPENSSL_IMPORT globalref
 242 # define OPENSSL_GLOBAL globaldef
 243 #elif defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
 244 # define OPENSSL_EXPORT extern __declspec(dllexport)
 245 # define OPENSSL_IMPORT extern __declspec(dllimport)
 246 # define OPENSSL_GLOBAL
 247 #else
 248 # define OPENSSL_EXPORT extern
 249 # define OPENSSL_IMPORT extern
 250 # define OPENSSL_GLOBAL
 251 #endif
 252 #define OPENSSL_EXTERN OPENSSL_IMPORT
 253
 254 /*-
 255  * Macros to allow global variables to be reached through function calls when
 256  * required (if a shared library version requires it, for example.
 257  * The way it's done allows definitions like this:
 258  *
 259  *      // in foobar.c
 260  *      OPENSSL_IMPLEMENT_GLOBAL(int,foobar,0)
 261  *      // in foobar.h
 262  *      OPENSSL_DECLARE_GLOBAL(int,foobar);
 263  *      #define foobar OPENSSL_GLOBAL_REF(foobar)
 264  */
 265 #ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
 266 # define OPENSSL_IMPLEMENT_GLOBAL(type,name)                         \
 267         extern type _hide_##name;                                    \
 268         type *_shadow_##name(void) { return &_hide_##name; }         \
 269         static type _hide_##name
 270 # define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
 271 # define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
 272 #else
 273 # define OPENSSL_IMPLEMENT_GLOBAL(type,name) OPENSSL_GLOBAL type _shadow_##name
 274 # define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
 275 # define OPENSSL_GLOBAL_REF(name) _shadow_##name
 276 #endif
 277
 278 #ifdef  __cplusplus
 279 }
 280 #endif
 281 #endif