cosmopolitan/libc/integral/lp64arg.inc

/* variadic arguments for chibicc */

/* <sync libc/runtime/valist.c> */
struct __va_list {
  uint32_t gp_offset;
  uint32_t fp_offset;
  void *overflow_arg_area;
  void *reg_save_area;
};
/* </sync libc/runtime/valist.c> */

void *__va_arg(struct __va_list *, size_t, unsigned, unsigned);

#define __GNUC_VA_LIST 1
#define __gnuc_va_list va_list

#define va_end(AP)
#define va_copy(DST, SRC) ((DST)[0] = (SRC)[0])
#define va_start(AP, LAST)                    \
  do {                                        \
    *(AP) = *(struct __va_list *)__va_area__; \
  } while (0)

#define va_arg(AP, TYPE)                               \
  (*(TYPE *)__va_arg(AP, sizeof(TYPE), _Alignof(TYPE), \
                     __builtin_reg_class(TYPE)))

typedef struct __va_list va_list[1];