void mips_cpu_unassigned_access(CPUState *cs, hwaddr addr, bool is_write, bool is_exec, int unused, unsigned size) { MIPSCPU *cpu = MIPS_CPU(cs); CPUMIPSState *env = &cpu->env; if (is_exec) { helper_raise_exception(env, EXCP_IBE); } else { helper_raise_exception(env, EXCP_DBE);