278 lines
6.1 KiB
C
278 lines
6.1 KiB
C
/***
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*cruntime.h - definitions specific to the target operating system and
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* hardware
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*
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* Copyright (c) 1990-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This header file contains widely used definitions specific to the
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* host operating system and hardware. It is included by every C source
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* and most every other header file.
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* [Internal]
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*
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*Revision History:
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* 02-27-90 GJF File created
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* 03-06-90 GJF Added register macros (REG1,...,etc.)
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* 04-11-90 GJF Set _CALLTYPE1 and _CALLTYPE4 to _stdcall.
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* 10-30-90 GJF Added macros defining variable args interface.
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* 10-31-90 GJF Added definition of _JBLEN (from setjmp.h).
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* 11-13-90 GJF Revised #ifdef-s, now use symbolic constants
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* representing target OS and target processor, with
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* #error directives for unsupported targets. Note the
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* general grouping of only OS-dependent definitions
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* followed by OS and processor dependent definitions.
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* 02-25-91 SRW Move _JBLEN definition back to setjmp.h [_WIN32_]
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* 04-09-91 PNT Added _MAC_ definitions
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* 05-09-91 GJF Restored _JBLEN definitions. Also fixed the macros
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* defining the target processor so both Stevewo's stuff
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* and mine would work.
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* 05-13-91 GJF Changed _CALLTYPE1 and _CALLTYPE4 to _cdecl for
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* Cruiser (_CRUISER_).
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* 08-28-91 JCR ANSI keywords
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* 11-01-91 GDP _JBLEN back to setjmp.h, stdarg macros back to stdarg.h
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* 03-30-92 DJM POSIX support.
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* 08-07-92 GJF Revised various macros.
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* 09-08-92 GJF Restored definition of _MIPS_ (temporarily).
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* 11-09-92 GJF Revised preprocessing conditionals for MIPS.
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* 01-09-93 SRW Remove usage of MIPS and ALPHA to conform to ANSI
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* Use _MIPS_ and _ALPHA_ instead.
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* 02-01-93 GJF Removed support for C6-386.
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*
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****/
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#ifndef _INC_CRUNTIME
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/*
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* Some CRT sources have code conditioned on _MIPS_. Continue to define
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* _MIPS_ when MIPS is defined until these sources are fixed.
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*/
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#if defined(MIPS) && !defined(_MIPS_)
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#define _MIPS_
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#endif
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#if defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC)
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#define UNALIGNED __unaligned
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#else
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#define UNALIGNED
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#endif
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/*
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* Conditional macro definition for function calling type and variable type
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* qualifiers.
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*/
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#if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
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/*
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* Definitions for MS C8-32 (386/486) compiler
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*/
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#define _CRTAPI1 __cdecl /* User-visible CRT function */
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#define _CRTAPI2 __cdecl /* User-visible CRT function */
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#define _CRTAPI3 __cdecl /* Internal CRT function */
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#define _CRTVAR1 /* C global variable */
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#else
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/*
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* Other compilers (e.g., MIPS)
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*/
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#define _CRTAPI1
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#define _CRTAPI2
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#define _CRTAPI3
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#define _CRTVAR1
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#endif
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/*
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* Old function calling type and variable type qualifier macros
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*/
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#define _CALLTYPE1 _CRTAPI1
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#define _CALLTYPE2 _CRTAPI2
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#define _CALLTYPE4 _CRTAPI3
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#define _VARTYPE1 _CRTVAR1
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#ifdef _CRUISER_
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/*
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* DEFINITIONS FOR CRUISER (AKA OS/2 2.0).
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*/
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#define _CALLTYPE3 __syscall /* OS API functions */
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/*
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* Macros for register variable declarations
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*/
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#define REG1 register
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#define REG2 register
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#define REG3 register
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#define REG4
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#define REG5
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#define REG6
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#define REG7
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#define REG8
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#define REG9
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/*
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* Macros for varargs support
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*/
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#define _VA_LIST_T char *
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#else /* ndef _CRUISER_ */
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#ifdef _WIN32_
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/*
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* DEFINITIONS FOR WIN32
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*/
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#ifdef _ALPHA_
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#define _VA_LIST_T \
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struct { \
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char *a0; /* pointer to first homed integer argument */ \
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int offset; /* byte offset of next parameter */ \
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}
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#else
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#define _VA_LIST_T char *
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#endif
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#if defined(_M_IX86)
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/*
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* 386/486
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*/
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#define REG1 register
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#define REG2 register
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#define REG3 register
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#define REG4
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#define REG5
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#define REG6
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#define REG7
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#define REG8
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#define REG9
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#elif defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC)
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/*
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* MIPS or ALPHA
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*/
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#define REG1 register
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#define REG2 register
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#define REG3 register
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#define REG4 register
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#define REG5 register
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#define REG6 register
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#define REG7 register
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#define REG8 register
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#define REG9 register
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#else
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#error ERROR - SUPPORT FOR WIN32 NT-X86, NT-MIPS, NT-ALPHA, AND NT-PPC ONLY
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#endif
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#else /* ndef _WIN32_ */
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#ifdef _POSIX_
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/*
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* DEFINITIONS FOR POSIX
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*/
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#ifdef _ALPHA_
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#define _VA_LIST_T \
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struct { \
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char *a0; /* pointer to first homed integer argument */ \
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int offset; /* byte offset of next parameter */ \
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}
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#else
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#define _VA_LIST_T char *
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#define _INTSIZEOF(n) ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
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#define _VA_START(ap,v) ap = (va_list)&v + _INTSIZEOF(v)
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#define _VA_ARG(ap,t) ( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEOF(t)) )
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#define _VA_END(ap) ap = (va_list)0
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#endif
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#if defined(_M_IX86)
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/*
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* 386/486
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*/
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#define REG1 register
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#define REG2 register
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#define REG3 register
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#define REG4
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#define REG5
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#define REG6
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#define REG7
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#define REG8
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#define REG9
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#elif defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC)
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/*
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* MIPS/Alpha/PPC
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*/
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#define REG1 register
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#define REG2 register
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#define REG3 register
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#define REG4 register
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#define REG5 register
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#define REG6 register
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#define REG7 register
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#define REG8 register
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#define REG9 register
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#else
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#error ERROR - SUPPORT FOR POSIX NT-X86, NT-MIPS, NT-ALPHA, AND NT_PPC ONLY
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#endif
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#else /* ndef _POSIX_ */
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#ifdef _MAC_
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/*
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* DEFINITIONS FOR MAC.
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*/
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/*
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* Macros for register variable declarations
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*/
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#define REG1
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#define REG2
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#define REG3
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#define REG4
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#define REG5
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#define REG6
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#define REG7
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#define REG8
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#define REG9
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/*
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* Macros for varargs support
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*/
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#define _VA_LIST_T char *
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#else /* ndef _MAC_ */
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#error ERROR - ONLY CRUISER, WIN32, OR MAC TARGET SUPPORTED!
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#endif /* _MAC_ */
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#endif /* _WIN32_ */
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#endif /* _POSIX_ */
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#endif /* _CRUISER_ */
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#define _INC_CRUNTIME
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#endif /* _INC_CRUNTIME */
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