windows-xp/Source/XPSP1/NT/base/crts/crtw32/h/cruntime.h

/***
*cruntime.h - definitions specific to the target operating system and hardware
*
*       Copyright (c) 1990-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
*       This header file contains widely used definitions specific to the
*       host operating system and hardware. It is included by every C source
*       and most every other header file.
*
*       [Internal]
*
*Revision History:
*       02-27-90  GJF   File created
*       03-06-90  GJF   Added register macros (REG1,...,etc.)
*       04-11-90  GJF   Set _CALLTYPE1 and _CALLTYPE4 to _stdcall.
*       10-30-90  GJF   Added macros defining variable args interface.
*       10-31-90  GJF   Added definition of _JBLEN (from setjmp.h).
*       11-13-90  GJF   Revised #ifdef-s, now use symbolic constants
*                       representing target OS and target processor, with
*                       #error directives for unsupported targets. Note the
*                       general grouping of only OS-dependent definitions
*                       followed by OS and processor dependent definitions.
*       02-25-91  SRW   Move _JBLEN definition back to setjmp.h [_WIN32_]
*       04-09-91  PNT   Added _MAC_ definitions
*       05-09-91  GJF   Restored _JBLEN definitions. Also fixed the macros
*                       defining the target processor so both Stevewo's stuff
*                       and mine would work.
*       05-13-91  GJF   Changed _CALLTYPE1 and _CALLTYPE4 to _cdecl for
*                       Cruiser (_CRUISER_).
*       08-28-91  JCR   ANSI keywords
*       11-01-91  GDP   _JBLEN back to setjmp.h, stdarg macros back to stdarg.h
*       03-30-92  DJM   POSIX support.
*       08-07-92  GJF   Revised various macros.
*       09-08-92  GJF   Restored definition of _MIPS_ (temporarily).
*       11-09-92  GJF   Revised preprocessing conditionals for MIPS.
*       01-09-93  SRW   Remove usage of MIPS and ALPHA to conform to ANSI
*                       Use _MIPS_ and _ALPHA_ instead.
*       02-01-93  GJF   Removed support for C6-386.
*       04-06-93  SKS   Remove support for OS/2, MAC, POSIX, MIPS, etc.
*       11-11-93  GJF   Merged in NT SDK version. Note that having
*                       definitions for the variable-argument access macros
*                       in this file is probably obsolete - this needs to be
*                       checked.
*       10-02-94  BWT   Add PPC support.
*       10-09-94  BWT   Unknown platform changes from John Morgan.
*       12-15-94  XY    merged with mac header
*       02-14-95  CFW   Clean up Mac merge.
*       03-29-95  CFW   Add error message to internal headers.
*       12-14-95  JWM   Add "#pragma once".
*       02-24-97  GJF   Detab-ed.
*       10-07-97  RDL   Added IA64.
*       05-17-99  PML   Remove all Macintosh support.
*       11-03-99  PML   Remove _VA_LIST_T
*       03-18-01  PML   Define _USE_OLD_STDCPP when compiling with stdcpp64
*                       and stdhpp64, for the Win64 system CRTs.
*
****/

#if     _MSC_VER > 1000 /*IFSTRIP=IGN*/
#pragma once
#endif

#ifndef _INC_CRUNTIME
#define _INC_CRUNTIME

#ifndef _CRTBLD
/*
 * This is an internal C runtime header file. It is used when building
 * the C runtimes only. It is not to be used as a public header file.
 */
#error ERROR: Use of C runtime library internal header file.
#endif  /* _CRTBLD */

#if     defined(_SYSCRT) && defined(_WIN64)
#define _USE_OLD_STDCPP 1
#endif

#if     defined(_AMD64_) || defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC) || defined(_M_IA64)
#define UNALIGNED __unaligned
#else
#define UNALIGNED
#endif

#ifdef  _M_IX86
/*
 * 386/486
 */
#define REG1    register
#define REG2    register
#define REG3    register
#define REG4
#define REG5
#define REG6
#define REG7
#define REG8
#define REG9

#elif   ( defined(_M_AMD64) || defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC) || defined(_M_IA64) )
/*
 * MIPS, ALPHA, or PPC
 */
#define REG1    register
#define REG2    register
#define REG3    register
#define REG4    register
#define REG5    register
#define REG6    register
#define REG7    register
#define REG8    register
#define REG9    register

#else

#pragma message ("Machine register set not defined")

/*
 * Unknown machine
 */

#define REG1
#define REG2
#define REG3
#define REG4
#define REG5
#define REG6
#define REG7
#define REG8
#define REG9

#endif

/*
 * Are the macro definitions below still needed in this file? Are they even
 * correct for MIPS (probably not).
 */
#if     defined(_POSIX_) && !defined(_M_ALPHA)

#define _INTSIZEOF(n)    ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )

#define _VA_START(ap,v) ap = (va_list)&v + _INTSIZEOF(v)
#define _VA_ARG(ap,t) ( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEOF(t)) )
#define _VA_END(ap) ap = (va_list)0

#endif

#endif  /* _INC_CRUNTIME */