taglinefilesource code
tnum48kernel/ioport.cunsigned long froml, lindex, tnum, numl, rindex, mask;
tnum53kernel/ioport.ctnum = lindex + num;
tnum54kernel/ioport.cnuml = (tnum + 0x1f) >> 5;
tnum55kernel/ioport.crindex = tnum & 0x1f;
tnum59kernel/ioport.cif (froml * 32 + tnum > sizeof(current->tss.io_bitmap) * 8 - 8)