mingw-w64-headers/crt/vadefs.h

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the w64 mingw-runtime package.
 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 */
#ifndef _INC_VADEFS
#define _INC_VADEFS

#ifndef _WIN32
#error Only Win32 target is supported!
#endif

#include <_mingw.h>

#pragma pack(push,_CRT_PACKING)

#ifdef __cplusplus
extern "C" {
#endif

#if defined (__GNUC__)
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
  typedef __builtin_va_list __gnuc_va_list;
#endif
#endif /* __GNUC__ */

#ifndef _VA_LIST_DEFINED	/* if stdargs.h didn't define it */
#define _VA_LIST_DEFINED
#if defined(__GNUC__)
  typedef __gnuc_va_list va_list;
#elif defined(_MSC_VER)
  typedef char *  va_list;
#else /* !gcc && !msvc */
#error VARARGS not implemented for this compiler
#endif
#endif /* _VA_LIST_DEFINED */

#ifdef __cplusplus
#define _ADDRESSOF(v) (&reinterpret_cast<const char &>(v))
#else
#define _ADDRESSOF(v) (&(v))
#endif

#if defined (__GNUC__)
/* Use GCC builtins */

#define _crt_va_start(v,l)	__builtin_va_start(v,l)
#define _crt_va_arg(v,l)	__builtin_va_arg(v,l)
#define _crt_va_end(v)		__builtin_va_end(v)
#define _crt_va_copy(d,s)	__builtin_va_copy(d,s)

#elif defined(_MSC_VER)
/* MSVC specific */

#if defined(_M_IA64)
#define _VA_ALIGN 8
#define _SLOTSIZEOF(t) ((sizeof(t) + _VA_ALIGN - 1) & ~(_VA_ALIGN - 1))
#define _VA_STRUCT_ALIGN 16
#define _ALIGNOF(ap) ((((ap)+_VA_STRUCT_ALIGN - 1) & ~(_VA_STRUCT_ALIGN -1)) - (ap))
#define _APALIGN(t,ap) (__alignof(t) > 8 ? _ALIGNOF((uintptr_t) ap) : 0)
#else
#define _SLOTSIZEOF(t) (sizeof(t))
#define _APALIGN(t,ap) (__alignof(t))
#endif

#if defined(_M_IX86)

#define _INTSIZEOF(n) ((sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1))
#define _crt_va_start(v,l)	((v) = (va_list)_ADDRESSOF(l) + _INTSIZEOF(l))
#define _crt_va_arg(v,l)	(*(l *)(((v) += _INTSIZEOF(l)) - _INTSIZEOF(l)))
#define _crt_va_end(v)		((v) = (va_list)0)
#define _crt_va_copy(d,s)	((d) = (s))

#elif defined(_M_AMD64)

#define _PTRSIZEOF(n) ((sizeof(n) + sizeof(void*) - 1) & ~(sizeof(void*) - 1))
#define _ISSTRUCT(t)  ((sizeof(t) > sizeof(void*)) || (sizeof(t) & (sizeof(t) - 1)) != 0)
#define _crt_va_start(v,l)	((v) = (va_list)_ADDRESSOF(l) + _PTRSIZEOF(l))
#define _crt_va_arg(v,t)	_ISSTRUCT(t) ?						\
				 (**(t**)(((v) += sizeof(void*)) - sizeof(void*))) :	\
				 ( *(t *)(((v) += sizeof(void*)) - sizeof(void*)))
#define _crt_va_end(v)		((v) = (va_list)0)
#define _crt_va_copy(d,s)	((d) = (s))

#elif defined(_M_IA64)

#error VARARGS not implemented for IA64

#else

#error VARARGS not implemented for this TARGET

#endif /* cpu ifdefs */

#endif /* compiler ifdefs */

#ifdef __cplusplus
}
#endif

#pragma pack(pop)

#endif /* _INC_VADEFS */