On 18/12/2019 18:26, Ionela Voinescu wrote: > +/* > + * reset_amuserenr_el0 - reset AMUSERENR_EL0 if AMUv1 present > + */ > + .macro reset_amuserenr_el0, tmpreg > + mrs \tmpreg, id_aa64pfr0_el1 // Check ID_AA64PFR0_EL1 > + ubfx \tmpreg, \tmpreg, #ID_AA64PFR0_AMU_SHIFT, #4 > + cbz \tmpreg, 9000f // Skip if no AMU present > + msr_s SYS_AMUSERENR_EL0, xzr // Disable AMU access from EL0 > +9000: AIUI you can steer away from the obscure numbering scheme and define the label using the macro counter: cbz \tmpreg, .Lskip_\@ [...] .Lskip_\@: .endm > + .endm
