* Makefile.in (ppc_tdep_h): Define.

* Makefile.in (ppc_tdep_h): Define.
(ppc-linux-nat.o)
(ppc-linux-tdep.o)
(rs6000-tdep.o): Use $(ppc_tdep_h).
(ppc-sysv-tdep.o)
(ppcnbsd-nat.o)
(ppcnbsd-tdep.o): New dependency lists.
* ppc-tdep.h: Use generic OS ABI framework.
* ppc-linux-tdep.c (_initialize_ppc_linux_tdep,
ppc_linux_init_abi): New functions.
(ppc_sysv_abi_broken_use_struct_convention)
(ppc_sysv_abi_use_struct_convention)
(ppc_sysv_abi_push_arguments): Move to...
* ppc-sysv-tdep.c: ...here.
* ppcnbsd-nat.c: Don't include gdbcore.h and regcache.h.
* rs6000-tdep.c (process_note_abi_tag_sections)
(get_elfosabi): Remove.
(rs6000_gdbarch_init): Use generic OS ABI framework.
(rs6000_dump_tdep): New function.
(_initialize_rs6000_tdep): Use gdbarch_register.
* config/powerpc/linux.mt (TDEPFILES): Add ppc-sysv-tdep.o.
* config/powerpc/nbsd.mh (NATDEPFILES): Remove solib-legacy.o.
* config/powerpc/aix.mt (TDEPFILES): Use ppc-sysv-tdep.o instead
of ppc-linux-tdep.o.
* config/powerpc/nbsd.mt (TDEPFILES): Likewise.
* config/powerpc/ppc-eabi.mt (TDEPFILES): Likewise.
* config/powerpc/ppc-sim.mt (TDEPFILES): Likewise.
* config/powerpc/ppcle-eabi.mt (TDEPFILES): Likewise.
* config/powerpc/ppcle-sim.mt (TDEPFILES): Likewise.
* config/powerpc/vxworks.mt (TDEPFILES): Likewise.