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/*** |
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*varargs.h - XENIX style macros for variable argument functions |
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* |
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* Copyright (c) Microsoft Corporation. All rights reserved. |
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* |
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*Purpose: |
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* This file defines XENIX style macros for accessing arguments of a |
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* function which takes a variable number of arguments. |
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* [System V] |
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* |
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* [Public] |
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* |
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****/ |
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#if _MSC_VER > 1000 |
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#pragma once |
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#endif |
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#ifndef _INC_VARARGS |
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#define _INC_VARARGS |
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#if !defined(_WIN32) |
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#error ERROR: Only Win32 target supported! |
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#endif |
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#include <crtdefs.h> |
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#ifdef _MSC_VER |
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/* |
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* Currently, all MS C compilers for Win32 platforms default to 8 byte |
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* alignment. |
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*/ |
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#pragma pack(push,_CRT_PACKING) |
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#endif /* _MSC_VER */ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#if __STDC__ |
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#error varargs.h incompatible with ANSI (use stdarg.h) |
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#endif |
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#if !defined(_W64) |
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#if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300 |
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#define _W64 __w64 |
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#else |
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#define _W64 |
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#endif |
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#endif |
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#ifndef _UINTPTR_T_DEFINED |
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#ifdef _WIN64 |
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typedef unsigned __int64 uintptr_t; |
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#else |
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typedef _W64 unsigned int uintptr_t; |
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#endif |
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#define _UINTPTR_T_DEFINED |
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#endif |
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#ifndef _VA_LIST_DEFINED |
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#ifdef _M_CEE_PURE |
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typedef System::ArgIterator va_list; |
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#else |
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typedef char * va_list; |
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#endif |
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#define _VA_LIST_DEFINED |
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#endif |
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#ifndef va_arg |
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#if defined(_M_CEE) |
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#error varargs.h not supported when targetting _M_CEE (use stdarg.h) |
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#elif defined(_M_IX86) |
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/* |
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* define a macro to compute the size of a type, variable or expression, |
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* rounded up to the nearest multiple of sizeof(int). This number is its |
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* size as function argument (Intel architecture). Note that the macro |
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* depends on sizeof(int) being a power of 2! |
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*/ |
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#define _INTSIZEOF(n) ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) ) |
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#define va_dcl va_list va_alist; |
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#define va_start(ap) ap = (va_list)&va_alist |
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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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#elif defined(_M_IA64) |
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#ifndef _VA_LIST |
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#define _VA_LIST char* |
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#endif |
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typedef _VA_LIST va_list; |
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#define va_dcl __int64 va_alist; |
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#define va_start(ap) ( ap = (va_list)&va_alist ) |
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#define va_arg(ap,t) (*(t *)((ap += _SLOTSIZEOF(t)+ _APALIGN(t,ap)) \ |
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-_SLOTSIZEOF(t))) |
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#define va_end(ap) ( ap = (va_list)0 ) |
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#elif defined(_M_AMD64) |
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extern void __cdecl __va_start(va_list *, ...); |
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#define va_dcl va_list va_alist; |
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#define va_start(ap) ( __va_start(&ap, 0) ) |
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#define va_arg(ap, t) \ |
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( ( sizeof(t) > sizeof(__int64) || ( sizeof(t) & (sizeof(t) - 1) ) != 0 ) \ |
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? **(t **)( ( ap += sizeof(__int64) ) - sizeof(__int64) ) \ |
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: *(t *)( ( ap += sizeof(__int64) ) - sizeof(__int64) ) ) |
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#define va_end(ap) ( ap = (va_list)0 ) |
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#else |
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/* A guess at the proper definitions for other platforms */ |
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#define _INTSIZEOF(n) ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) ) |
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#define va_dcl va_list va_alist; |
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#define va_start(ap) ap = (va_list)&va_alist |
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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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#endif |
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#ifdef __cplusplus |
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} |
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#endif |
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#ifdef _MSC_VER |
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#pragma pack(pop) |
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#endif /* _MSC_VER */ |
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#endif /* _INC_VARARGS */ |
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