diff options
Diffstat (limited to 'target-arm/cpu.h')
| -rw-r--r-- | target-arm/cpu.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index 328c256c3e..afc46b24ee 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -633,6 +633,22 @@ static inline int arm_feature(CPUARMState *env, int feature) return (env->features & (1ULL << feature)) != 0; } +/* Return true if the specified exception level is running in AArch64 state. */ +static inline bool arm_el_is_aa64(CPUARMState *env, int el) +{ + /* We don't currently support EL2 or EL3, and this isn't valid for EL0 + * (if we're in EL0, is_a64() is what you want, and if we're not in EL0 + * then the state of EL0 isn't well defined.) + */ + assert(el == 1); + /* AArch64-capable CPUs always run with EL1 in AArch64 mode. This + * is a QEMU-imposed simplification which we may wish to change later. + * If we in future support EL2 and/or EL3, then the state of lower + * exception levels is controlled by the HCR.RW and SCR.RW bits. + */ + return arm_feature(env, ARM_FEATURE_AARCH64); +} + void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf); /* Interface between CPU and Interrupt controller. */ |