BOOTARG_LEN
size_t ac = BOOTARG_LEN;
size_t ac = BOOTARG_LEN;
(u_long)marks[MARK_END], BOOTARG_APIVER, BOOTARG_LEN, (caddr_t)BOOTARG_OFF);
(u_long)marks[MARK_END], BOOTARG_APIVER, BOOTARG_LEN,
size_t ac = BOOTARG_LEN;