_comdef.mh

来自「开放源码的编译器open watcom 1.6.0版的源代码」· MH 代码 · 共 189 行

/*
 *  _comdef.h   Common Macro Definitions
 *
:include crwat.sp
 */

::
:: IMPORTANT: The _W?RTLINK and _W?RTDATA macros are currently identical.
:: Older versions used _W?RTLINK for both data and functions. However, it is
:: thought that keeping data and functions separate is useful in case some
:: target environment does, in fact, require different handling of public
:: functions and data exported by the runtime. Same logic applies to separate
:: _WCRT*/_WMRT*/_WPRT* (ie. C/math/C++) macros, which also currently expand
:: to the same thing (in this header, but not C++ runtime internal headers).
::

::
:: NB: When C compiler is uptodate, the _WRTLFCONV/_WRTLDCONV macros could
:: be removed and replaced directly by __declspec. Note that it is possible
:: to write __declspec(dllimport __watcall). On the other hand it might be
:: useful to have _WRTLCONV and _WRTLEXIM macros to have access
:: to calling conventions and export/import separately, for a few rare cases
:: where special calling conventions are used.
::

:: NB: bld/lib_misc/h/variety.h needs to be kept in sync with this file

#ifndef _COMDEF_H_INCLUDED
#define _COMDEF_H_INCLUDED
:include readonly.sp
  #ifdef _WCDATA
    #error The macro _WCDATA is reserved for use by the runtime library.
  #endif
  #ifdef _WCNEAR
    #error The macro _WCNEAR is reserved for use by the runtime library.
  #endif
  #ifdef _WCFAR
    #error The macro _WCFAR is reserved for use by the runtime library.
  #endif
  #ifdef _WCHUGE
    #error The macro _WCHUGE is reserved for use by the runtime library.
  #endif
  #ifdef _WCI86NEAR
    #error The macro _WCI86NEAR is reserved for use by the runtime library.
  #endif
  #ifdef _WCI86FAR
    #error The macro _WCI86FAR is reserved for use by the runtime library.
  #endif
  #ifdef _WCI86HUGE
    #error The macro _WCI86HUGE is reserved for use by the runtime library.
  #endif
  #ifdef _WCINTERRUPT
    #error The macro _WCINTERRUPT is reserved for use by the runtime library.
  #endif
  #ifdef _WCUNALIGNED
    #error The macro _WCUNALIGNED is reserved for use by the runtime library.
  #endif
  #if __WATCOMC__ > 1250
    #define _WRTLFCONV __declspec(__watcall)
    #define _WRTLDCONV __declspec(__watcall)
  #else
    #define _WRTLFCONV
    #define _WRTLDCONV
  #endif
  #if defined(_M_IX86)
    #define _WCNEAR __near
    #define _WCFAR __far
    #define _WCHUGE __huge
    #define _WCINTERRUPT __interrupt
    #define _WCUNALIGNED
    #if defined(__386__)
      #define _WCI86NEAR
      #define _WCI86FAR
      #define _WCI86HUGE
    #else
      #define _WCI86NEAR __near
      #define _WCI86FAR __far
      #define _WCI86HUGE __huge
    #endif
  #elif defined(__AXP__)
    #define _WCNEAR
    #define _WCFAR
    #define _WCHUGE
    #define _WCI86NEAR
    #define _WCI86FAR
    #define _WCI86HUGE
    #define _WCINTERRUPT
    #define _WCUNALIGNED __unaligned
  #elif defined(__PPC__)
    #define _WCNEAR
    #define _WCFAR
    #define _WCHUGE
    #define _WCI86NEAR
    #define _WCI86FAR
    #define _WCI86HUGE
    #define _WCINTERRUPT
    #define _WCUNALIGNED __unaligned
  #else
    #define _WCNEAR
    #define _WCFAR
    #define _WCHUGE
    #define _WCI86NEAR
    #define _WCI86FAR
    #define _WCI86HUGE
    #define _WCINTERRUPT
    #define _WCUNALIGNED
  #endif
  #if defined(M_I86HM)
    #define _WCDATA _WCFAR
  #elif defined(__SW_ND) || defined(__FUNCTION_DATA_ACCESS)
    #define _WCDATA
  #else
    #define _WCDATA _WCNEAR
  #endif
:segment QNX | LINUX
  #define _WCRTLINK _WRTLFCONV
  #define _WCRTDATA _WRTLDCONV
  #define _WMRTLINK _WRTLFCONV
  #define _WMRTDATA _WRTLDCONV
  #define _WPRTLINK _WRTLFCONV
  #define _WPRTDATA _WRTLDCONV
:elsesegment
  #if defined(__SW_BR)
    #if defined(__NT__)
      #define _WCRTLINK __declspec(dllimport) _WRTLFCONV
      #define _WCRTDATA __declspec(dllimport) _WRTLDCONV
      #define _WMRTLINK __declspec(dllimport) _WRTLFCONV
      #define _WMRTDATA __declspec(dllimport) _WRTLDCONV
      #define _WPRTLINK __declspec(dllimport) _WRTLFCONV
      #define _WPRTDATA __declspec(dllimport) _WRTLDCONV
    #else
      #define _WCRTLINK _WRTLFCONV
      #define _WCRTDATA _WRTLDCONV
      #define _WMRTLINK _WRTLFCONV
      #define _WMRTDATA _WRTLDCONV
      #define _WPRTLINK _WRTLFCONV
      #define _WPRTDATA _WRTLDCONV
    #endif
  #else
    #ifndef _WCRTLINK
      #define _WCRTLINK _WRTLFCONV
    #endif
    #ifndef _WCRTDATA
      #define _WCRTDATA _WRTLDCONV
    #endif
    #ifndef _WMRTLINK
      #define _WMRTLINK _WRTLFCONV
    #endif
    #ifndef _WMRTDATA
      #define _WMRTDATA _WRTLDCONV
    #endif
    #ifndef _WPRTLINK
      #define _WPRTLINK _WRTLFCONV
    #endif
    #ifndef _WPRTDATA
      #define _WPRTDATA _WRTLDCONV
    #endif
  #endif
:endsegment
  /* control import modifier on intrinsic functions */
  #ifndef _WCIRTLINK
    #if defined(__INLINE_FUNCTIONS__)
      #define _WCIRTLINK _WRTLFCONV
    #else
      #define _WCIRTLINK _WCRTLINK
    #endif
  #endif
  #ifndef _WMIRTLINK
    #if defined(__NO_MATH_OPS) || defined(__AXP__) || defined(__PPC__)
      #define _WMIRTLINK _WMRTLINK
    #else
      #define _WMIRTLINK _WRTLFCONV
    #endif
  #endif
  #ifndef _WPIRTLINK
    #define _WPIRTLINK _WPRTLINK
  #endif
  /* for MS compatibility */
  #ifndef _CRTAPI1
    #define _CRTAPI1
  #endif
  #ifndef _CRTAPI2
    #define _CRTAPI2
  #endif
  #ifndef _CRTIMP
    #define _CRTIMP _WCRTLINK
  #endif
#endif