Add core complex interfaces for custom CSR and unknown instruction callback registration#41

eyck merged 2 commits intoMinres:mainMinres/DBT-RISE-RISCV:mainfrom

eugenecohen-qti:csr_and_instr_registrationeugenecohen-qti/DBT-RISE-RISCV:csr_and_instr_registrationCopy head branch name to clipboard