#ifndef _VARARGS_H #define _VARARGS_H /* in case stdarg.h got included by a header file */ #ifdef va_start #undef va_start #undef va_end #undef va_dcl #undef va_alist #undef va_list #endif #ifndef _COMPILER_H #include #endif #ifndef __GNUC__ /* I'm not sure this is right. These apparently are all supposed to be defines; doesn't seem to make much sense to make them functions. There may be some missing from this list; these are the ones I found by grepping around in code... */ /* a va_list is a list of random frobules */ typedef __VA_LIST__ va_list; /* the address of the list??? don't we already have that??? C programmers pick the wierdest times to start worrying about abstractions! */ #define va_start(args) args = (va_list) &va_alist /* is this supposed to do anything??? */ #define va_end(args) /* This is apparently a general purpose accessor, used for storing, as well as snarfing. This is the only way I could think of to make it work that way. Please, somebody, re-write this! */ #define va_arg(args, elt_type) ((elt_type * ) ((args) += sizeof(elt_type)))[-1] #define va_dcl int va_alist; #else /* These macros implement traditional (non-ANSI) varargs for GNU C. */ #define va_alist __builtin_va_alist #define va_dcl int __builtin_va_alist; #define va_list __VA_LIST__ #define va_start(AP) AP=(char *) &__builtin_va_alist #define va_end(AP) #define __va_rounded_size(TYPE) \ (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) #define va_arg(AP, TYPE) \ (AP += __va_rounded_size (TYPE), \ ((TYPE *) AP)[-1]) /* thanks dale! */ #endif /* __GNUC__ */ #endif /* _VARARGS_H */