问题
Can anyone tell me where to find Lua's bytecode specification? I've been searching for 15 minutes, and I can't find anything.
回答1:
Maybe A No-Frills Introduction to Lua 5.1 VM Instructions contains what you're looking for?
There is also a table of the Lua 5.0 instruction set (Figure 5) in:
Ierusalimschy, R.; Figueiredo, L. H.; Celes, W. (2005), "The implementation of Lua 5.0", J. of Universal Comp. Sci. 11 (7): 1159-1176
You can find the full text with a search on Google Scholar and I believe it's on lua.org as well. This reference is used by the Lua page on Wikipedia, which is always a good place to look for such things. :-)
回答2:
The official definition is in lopcodes.h.
回答3:
The only specifications for Lua are the language, standard libraries, and the C API. The creators of Lua intentionally left the VM unspecified for a couple main reasons:
- Lua can be fully implemented with any underlying architecture (VM, interpreter, compiler, etc.)
- The official Lua distribution doesn't have to worry about maintaining VM compatibility between versions
This means, for example, that you generally shouldn't use the Lua VM as a target for a compiler. If you'd like to know how the official Lua distribution's VM works as an example for your own curiosity, see the other answers.
回答4:
You can read The Implementation of Lua 5.0 online.
来源：https://stackoverflow.com/questions/1480678/luas-bytecode-specification