HDR_LEN
__inc_entry_length(hdr, HDR_LEN);
size += HDR_LEN;
#define SEC_DESC_OFFSET(idx) (HDR_LEN + (SEC_DESC_LEN * idx))
#define BOOT_SEC_OFFSET(count, idx) (HDR_LEN + (SEC_DESC_LEN * count) + (BOOT_SEC_LEN * idx))
#define FATAL_SEC_OFFSET(count, idx) (HDR_LEN + (SEC_DESC_LEN * count) + (FATAL_SEC_LEN * idx))
#define NONSTD_SEC_OFFSET(count, idx) (HDR_LEN + (SEC_DESC_LEN * count) + (NONSTD_SEC_LEN * idx))