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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 */ |