Typedefs starting with `r' in machdep/ppc

• RealDTEntry machdep/ppc/DeviceTree.c:37
• RealDTEntryIterator machdep/ppc/DeviceTree.c:53
• RealDTPropertyIterator machdep/ppc/DeviceTree.c:60
• reg_param_areaPtr_t machdep/ppc/frame.h:58
• reg_param_area_t machdep/ppc/frame.h:57