Variable function arguments and the stack

[Robert Kiesling <kiesling@xxxxxxxxxxxxx>]

I trying to write a function that calls libc functions with
variable arguments - for example, scanf.  I would like to do
this by pushing the arguments onto the stack and then calling 
the function, something like this.  (This code is for an x86
machine.)

static long long int scalar_args[512];
static char *ptr_args[512][BUFSIZE];