csr_func
int csr_func = (opcode & CSR_FUNC_MASK) >> 16;
if (op == LWC2 && op2 == CSR_OPCODE2 && csr_func == CSR_FUNC_CPUCFG) {
static const struct csr_func csr_funcs[] = {
const struct csr_func *tcfn, *cfn = NULL;