##smc_execute
if !HaveEL(EL3) || PSTATE.EL == EL0 then
    UnallocatedEncoding();

AArch64.CheckForSMCTrap(imm);

if SCR_EL3.SMD == 1 then
    // SMC disabled
    AArch64.UndefinedFault();
else
    AArch64.CallSecureMonitor(imm);
end
@@