* hppa-tdep.h (find_global_pointer): Add gdbarch as parameter.
* hppa-hpux-tdep.c (hppa32_hpux_find_global_pointer): Likewise. Replace
current_gdbarch by gdbarch.
(hppa64_hpux_find_global_pointer): Likewise.
* hppa-tdep.c (hppa_find_global_pointer): Likewise.
(hppa32_push_dummy_call, hppa64_push_dummy_call): Update call for
find_global_pointer.
* hppabsd-tdep.c (hppabsd_find_global_pointer): Add gdbarch as
parameter.
* hppa-linux-tdep.c (hppa_linux_find_global_pointer): Likewise.
* hppa-linux-nat.c (hppa_linux_register_addr): Use ARRAY_SIZE instead
of gdbarch_num_regs.
* hppa-hpux-tdep.c (hppa_hpux_sr_for_addr): Add gdbarch as parameter and
replace current_gdbarch by gdbarch.
(hppa_hpux_push_dummy_code): Update call for hppa_hpux_sr_for_addr.