MIPS_CPU_RW_LLB
#define cpu_has_rw_llb __isa_ge_or_opt(6, MIPS_CPU_RW_LLB)
#define cpu_guest_has_rw_llb (cpu_has_mips_r6 || (cpu_data[0].guest.options & MIPS_CPU_RW_LLB))
c->options |= MIPS_CPU_RW_LLB;
c->guest.options |= MIPS_CPU_RW_LLB;