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- /***
- *stdarg.h - defines ANSI-style macros for variable argument functions
- *
- * Copyright (c) 1985-1997, Microsoft Corporation. All rights reserved.
- *
- *Purpose:
- * This file defines ANSI-style macros for accessing arguments
- * of functions which take a variable number of arguments.
- * [ANSI]
- *
- * [Public]
- *
- ****/
-
- #if _MSC_VER > 1000
- #pragma once
- #endif
-
- #ifndef _INC_STDARG
- #define _INC_STDARG
-
- #if !defined(_WIN32) && !defined(_MAC)
- #error ERROR: Only Mac or Win32 targets supported!
- #endif
-
-
- #ifdef _MSC_VER
- /*
- * Currently, all MS C compilers for Win32 platforms default to 8 byte
- * alignment.
- */
- #pragma pack(push,8)
- #endif /* _MSC_VER */
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
-
-
- #ifndef _VA_LIST_DEFINED
- #ifdef _M_ALPHA
- typedef struct {
- char *a0; /* pointer to first homed integer argument */
- int offset; /* byte offset of next parameter */
- } va_list;
- #else
- typedef char * va_list;
- #endif
- #define _VA_LIST_DEFINED
- #endif
-
- #ifdef _M_IX86
-
-
- #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 )
-
- #elif defined(_M_MRX000)
-
-
- /* Use these types and definitions if generating code for MIPS */
-
- #define va_start(ap,v) ap = (va_list)&v + sizeof(v)
- #define va_end(list)
- #define va_arg(list, mode) ((mode *)(list =\
- (char *) ((((int)list + (__builtin_alignof(mode)<=4?3:7)) &\
- (__builtin_alignof(mode)<=4?-4:-8))+sizeof(mode))))[-1]
-
- /* +++++++++++++++++++++++++++++++++++++++++++
- Because of parameter passing conventions in C:
- use mode=int for char, and short types
- use mode=double for float types
- use a pointer for array types
- +++++++++++++++++++++++++++++++++++++++++++ */
-
-
- #elif defined(_M_ALPHA)
-
-
- /* Use these types and definitions if generating code for ALPHA */
-
- /*
- * The Alpha compiler supports two builtin functions that are used to
- * implement stdarg/varargs. The __builtin_va_start function is used
- * by va_start to initialize the data structure that locates the next
- * argument. The __builtin_isfloat function is used by va_arg to pick
- * which part of the home area a given register argument is stored in.
- * The home area is where up to six integer and/or six floating point
- * register arguments are stored down (so they can also be referenced
- * by a pointer like any arguments passed on the stack).
- */
-
- extern void * __builtin_va_start(va_list, ...);
-
- #ifdef _CFRONT
- #define __builtin_isfloat(a) __builtin_alignof(a)
- #endif
-
- #define va_start(list, v) __builtin_va_start(list, v, 1)
- #define va_end(list)
- #define va_arg(list, mode) \
- ( *( ((list).offset += ((int)sizeof(mode) + 7) & -8) , \
- (mode *)((list).a0 + (list).offset - \
- ((__builtin_isfloat(mode) && (list).offset <= (6 * 8)) ? \
- (6 * 8) + 8 : ((int)sizeof(mode) + 7) & -8) \
- ) \
- ) \
- )
-
- #elif defined(_M_PPC)
-
- /* Microsoft C8 front end (used in Motorola Merged compiler) */
- /* bytes that a type occupies in the argument list */
- #define _INTSIZEOF(n) ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
- /* return 'ap' adjusted for type 't' in arglist */
- #define _ALIGNIT(ap,t) \
- ((((int)(ap))+(sizeof(t)<8?3:7)) & (sizeof(t)<8?~3:~7))
-
- #define va_start(ap,v) ( ap = (va_list)&v + _INTSIZEOF(v) )
- #define va_arg(ap,t) ( *(t *)((ap = (char *) (_ALIGNIT(ap, t) + _INTSIZEOF(t))) - _INTSIZEOF(t)) )
- #define va_end(ap) ( ap = (va_list)0 )
-
- #elif defined(_M_M68K)
- #define _INTSIZEOF(n) ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
-
- #define va_start(ap,v) ( ap = (va_list)&v + (sizeof(v) < sizeof(int) ? sizeof(v) : _INTSIZEOF(v)) )
- #define va_arg(ap,t) ( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEOF(t)) )
- #define va_end(ap) ( ap = (va_list)0 )
-
- #elif defined(_M_MPPC)
- #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 )
-
- #else
-
- /* A guess at the proper definitions for other platforms */
-
- #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
-
-
- #ifdef __cplusplus
- }
- #endif
-
- #ifdef _MSC_VER
- #pragma pack(pop)
- #endif /* _MSC_VER */
-
- #endif /* _INC_STDARG */
-