SYS_RGSR_EL1
mrs_s \reg1, SYS_RGSR_EL1
msr_s SYS_RGSR_EL1, \reg1
mrs_s \reg1, SYS_RGSR_EL1
msr_s SYS_RGSR_EL1, \reg1
write_sysreg_s(rgsr, SYS_RGSR_EL1);
case SYS_RGSR_EL1: