[assembler] Allow more flexible specifications of opcodes Also stop using lisp-style processing of opcodes and just put them into a constexpr array. Test: berberis_all Change-Id: I2bbf9070113df83822183e1b30d0333f5b6c1ac3
Berberis: dynamic binary translator to run Android apps with riscv64 native code on x86_64 devices or emulators.