* hppa-linux-tdep.c (insns_match_pattern_relaxed): New function.
(hppa_linux_in_dyncall): Check that we are inside the range of
$$dyncall, not necessarily at the first insn.
(hppa_linux_in_solib_call_trampoline): Identify a trampoline
even if the pc does not point to the first insn of the trampoline.
* ppc-linux-tdep.c (ppc_linux_init_abi): Add [sic] to Linux.
* ppc-linux-nat.c: Use "Linux kernel".
* hppa-linux-tdep.c: Use GNU/Linux.
* hppa-linux-nat.c: Use GNU/Linux.
* dwarfread.c: Add [sic] to use of Linux.
* hppa-hpux-tdep.c (hppa32_hpux_in_solib_call_trampoline)
(hppa_hpux_skip_trampoline_code): Don't cache symbol values.
* hppa-linux-tdep.c (hppa_linux_in_dyncall): Likewise.
* hppa-tdep.c (hppa_symbol_address): New function definition.
* hppa-tdep.h (hppa_symbol_address): New function declaration.
* hppa-tdep.h (struct value): Forward declaration.
(gdbarch_tdep): Define tdep find_global_pointer method.
* hppa-tdep.c (hppa32_push_dummy_call): Find the global pointer
associated with the function we are trying to call, and write it
to the gp register.
(hppa32_convert_from_funct_ptr_addr): New function.
(hppa_find_global_pointer): New function.
(hppa_gdbarch_init): Set default find_global_pointer method; set
convert_from_func_ptr_addr method.
* hppa-linux-tdep.c (hppa_linux_find_global_pointer): New function.
(hppa_linux_init_abi): Set find_global_pointer method.
* Makefile.in (hppa-linux-tdep.o): Add value.h dependency.
* hppa-linux-tdep.c (hppa_linux_sigtramp_find_sigcontext): Pass in pc
instead of sp, handle sigaltstack case.
(hppa_linux_sigtramp_frame_unwind_cache): Adjust calls to
hppa_linux_sigtramp_find_sigcontext, and set base to the frame of the
signal handler and not that of the caller.
(hppa_linux_sigtramp_unwind_sniffer): Adjust calls to
hppa_linux_sigtramp_find_sigcontext.
* hppa-tdep.c (hppa_frame_prev_register_helper): New function to
do common handling of the pcoqt register.
(hppa_frame_prev_register, hppa_stub_frame_prev_register): Convert
to use helper function.
(hppa_frame_unwind_sniffer): Only use if unwind entry is present.
(hppa_fallback_frame_cache, hppa_fallback_frame_this_id)
(hppa_fallback_frame_prev_register, hppa_fallback_frame_unwind): New
generic fallback unwinder when all else fails.
(hppa_gdbarch_init): Add fallback sniffer.
* hppa-tdep.h (hppa_frame_prev_register_helper): Prototype.
* hppa-linux-tdep.c (hppa_linux_sigtramp_frame_prev_register): Convert
to use helper function.
* configure.host (hppa*-*-linux*): New target.
* configure.tgt (hppa*-*-linux*): Likewise.
* hppa-tdep.c (hppa_gdbarch_init): Set cannot_fetch_register, move
gdbarch_init_osabi() call earlier so that osabi-specific frame
unwinders can be registered first.
* config/djgpp/fnchange.lst: Add entries for hppa-linux-tdep.c and
hppa-linux-nat.c.
* config/pa/tm-hppa.h (ISR_REGNUM, PID0_REGNUM, PID1_REGNUM)
(PID2_REGNUM, PID3_REGNUM): Add definitions of some register numbers.
* config/pa/linux.mh: New file.
* config/pa/linux.mt: New file.
* config/pa/nm-linux.h: New file.
* config/pa/xm-linux.h: New file.
* hppa-linux-nat.c: New file.
* hppa-linux-tdep.c: New file.
