以下是回溯资料的 C 描述：复制typedef enum _UNWIND_OP_CODES {
UWOP_PUSH_NONVOL = 0, /* info == register number */
UWOP_ALLOC_LARGE,
/* no info, alloc size in next 2 slots */
UWOP_ALLOC_SMALL,
/* info == size of allocation / 8 - 1 */
UWOP_SET_FPREG,
/* no info, FP = RSP + UNWIND_INFO.FPRegOffset*16 */ ... |
