stdarg.h

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#ifndef __STDARG_H__
#define __STDARG_H__
 
 
#ifdef __cplusplus
extern "C"
{
#endif
 
 
    /* va list parameter list */
    typedef unsigned char *va_list;
 
 
    /* width of stack == width of int */
#define STACKITEM   int64_t
 
    /* round up width of objects pushed on stack. The expression before the
    & ensures that we get 0 for objects of size 0. */
#define VA_SIZE(TYPE)                   \
    ((sizeof(TYPE)+sizeof(STACKITEM)-1) \
    & ~(sizeof(STACKITEM)-1))
 
#ifdef ARCH_X64
    /* &(LASTARG) points to the LEFTMOST argument of the function call
    (before the ...) */
#define va_start(AP, LASTARG)   \
    (AP = ((va_list)&(LASTARG)+VA_SIZE(LASTARG)))
 
    /* nothing for va_end */
#define va_end(AP)
 
#define va_arg(AP, TYPE)    \
    (AP += VA_SIZE(TYPE), *((TYPE *)(AP - VA_SIZE(TYPE))))
#elif ARCH_ARM64
#define va_start(ap,last) \
     ((ap) = (va_list)(&(last)) + 8)
 
#define va_arg(ap,T) \
     (*(T*)((ap) += 8, (ap) - 8))
 
#define va_end(ap) \
     ((ap) = (va_list)0)
#endif
 
#ifdef __cplusplus
}
#endif
 
 
#endif