Actually, at least all of: ansi.h aout_machdep.h asm.h cdefs.h cpu.h db_machdep.h endian.h float.h frame.h ieeefp.h kcore.h limits.h param.h pcb.h profile.h psl.h ptrace.h reg.h setjmp.h signal.h stdarg.h trap.h types.h varargs.h should just include the version for arch/powerpc/include. Probably others as well.