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# duplicate banked registers into new per-cpu arrays.
def upgrader(cpt):
    if cpt.get('root','isa') == 'arm':
        for sec in cpt.sections():
            import re

            if not re.search('\.gic$', sec):
                continue
            cpuEnabled  = cpt.get(sec, 'cpuEnabled' ).split()

            intEnabled  = cpt.get(sec, 'intEnabled' ).split()
            pendingInt  = cpt.get(sec, 'pendingInt' ).split()
            activeInt   = cpt.get(sec, 'activeInt'  ).split()
            intPriority = cpt.get(sec, 'intPriority').split()
            cpuTarget   = cpt.get(sec, 'cpuTarget'  ).split()

            b_intEnabled = intEnabled[0]
            b_pendingInt = pendingInt[0]
            b_activeInt  = activeInt[0]

            del intEnabled[0]
            del pendingInt[0]
            del activeInt[0]
            del intPriority[0:32] # unused; overlapped with bankedIntPriority
            del cpuTarget[0:32]

            cpt.set(sec, 'intEnabled', ' '.join(intEnabled))
            cpt.set(sec, 'pendingInt', ' '.join(pendingInt))
            cpt.set(sec, 'activeInt',  ' '.join(activeInt))
            cpt.set(sec, 'intPriority',' '.join(intPriority))
            cpt.set(sec, 'cpuTarget',  ' '.join(cpuTarget))

            b_intPriority = cpt.get(sec, '*bankedIntPriority').split()
            cpt.remove_option(sec, '*bankedIntPriority')

            for cpu in xrange(0, 255):
                if cpuEnabled[cpu] == 'true':
                    intPriority = b_intPriority[cpu*32 : (cpu+1)*32]
                    new_sec = "%s.bankedRegs%u" % (sec, cpu)
                    cpt.add_section(new_sec)
                    cpt.set(new_sec, 'intEnabled', b_intEnabled)
                    cpt.set(new_sec, 'pendingInt', b_pendingInt)
                    cpt.set(new_sec, 'activeInt',  b_activeInt)
                    cpt.set(new_sec, 'intPriority',' '.join(intPriority))