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in x86 why call or jump to another addr is start calucate from nows pc pointers tails address notfrom headers address? maybe x86 has instruction prefixs？ can somebody tell me please？

the reason or some manpage like doc?

Detective玉砌雕栏改
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    It's really just a design decision. There's no inherent reason it couldn't have been done the other way, though I suspect doing it this way makes the hardware slightly simpler. x86 does have instruction prefixes but they don't really have anything to do with this. – Nate Eldredge May 20 '23 at 16:48
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    "The documentation" is the [x86 Software Developer's Manual](https://www.intel.com/content/www/us/en/developer/articles/technical/intel-sdm.html), though its purpose is just to define how the system behaves, and not to explain the reasons for the design. (But sometimes they can be inferred.) – Nate Eldredge May 20 '23 at 16:49
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    For future reference, the apostrophe is `'` not `\`` (backtick). As you can see, the backtick is used in markdown to get a "code" font. – Nate Eldredge May 20 '23 at 16:52

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