The project presents the most complete and thoroughly tested formal semantics of x86-64 to date. Our semantics faithfully formalizes all the non-deprecated, sequential user-level instructions of the x86-64 Haswell instruction set architecture. This totals 3155 instruction variants, corresponding to 774 mnemonics. The semantics is fully executable and has been tested against more than 7,000 instruction-level test cases and the GCC torture test suite.
https://github.com/kframework/X86-64-semantics
see-also:
http://www.kframework.org/index.php/Main_Page
https://runtimeverification.com/blog/k-framework-an-overview/
https://github.com/davidlazar/llvm-semantics
Firmware Security 