超过70000总吨的部分，每总吨增加400计算单位。
Researcher: Tom Hunt
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A number of fields in this header use the native endianness of the udev process. This might cause issues with cross-endianness qemu-user processes, but I haven't personally tested this. There does not appear to be any explicit provision for handling this situation, but header_sz can be used to sniff for the appropriate endiannness.，推荐阅读新收录的资料获取更多信息
0000000100008030 d __dyld_private，更多细节参见新收录的资料