gdb/config/pa/xm-pa.h

   1 /* Definitions for all PA machines.  */
   2
   3 #define MAKEVA_START(list) \
   4   list->argindex = list->nargs * list->max_arg_size;
   5
   6 /* In addition to having the arguments passed with the first ones at the
   7    highest memory addresses, the pa also apparently aligns each argument
   8    to the size of that argument.  This only works because the caller only
   9    deals in 4 and 8 byte arguments.  If we wanted to handle args > 8 bytes,
  10    we would have to pass the address by reference.  */
  11 #define MAKEVA_ARG(list, argaddr, argsize) \
  12   list->argindex = (list->argindex - argsize) & ~ (argsize - 1); \
  13   memcpy (&list->arg_bytes[list->argindex], argaddr, argsize);
  14
  15 /* Apparently the address of the arglist is the address right after the args
  16    (which is what you'd expect).  */
  17 #define MAKEVA_END(list) \
  18   return (va_list) (list->arg_bytes \
  19                     + list->nargs * list->max_arg_size)