IIUC it is a pre-requisite for IPv6 support, some UNICes do not support
getaddrinfo required for IPv6. But coincidentally such UNICes are no longer
really supported by GDB. Therefore it was concluded we can remove all such
UNICes and then we can implement IPv6 easily with getaddrinfo.
In mail
Re: getaddrinfo available on all GDB hosts? [Re: [PATCH v2] Add IPv6 support for remote TCP connections]
Message-ID: <20140211034157.GG5485@adacore.com>
https://sourceware.org/ml/gdb-patches/2014-02/msg00333.html
Joel said:
So I chose HP-UX first for this patch.
gdb/ChangeLog
2014-10-16 Jan Kratochvil <jan.kratochvil@redhat.com>
Remove HPUX.
* Makefile.in (ALL_64_TARGET_OBS): Remove ia64-hpux-tdep.o.
(ALL_TARGET_OBS): Remove hppa-hpux-tdep.o, solib-som.o and solib-pa64.o.
(HFILES_NO_SRCDIR): Remove solib-som.h, inf-ttrace.h, solib-pa64.h and
ia64-hpux-tdep.h, solib-ia64-hpux.h.
(ALLDEPFILES): Remove hppa-hpux-tdep.c, hppa-hpux-nat.c,
ia64-hpux-nat.c, ia64-hpux-tdep.c, somread.c and solib-som.c.
* config/djgpp/fnchange.lst: Remove hppa-hpux-nat.c and
hppa-hpux-tdep.c.
* config/ia64/hpux.mh: Remove file.
* config/pa/hpux.mh: Remove file.
* configure: Rebuilt.
* configure.ac (dlgetmodinfo, somread.o): Remove.
* configure.host (hppa*-*-hpux*, ia64-*-hpux*): Make them obsolete.
(ia64-*-hpux*): Remove its float format exception.
* configure.tgt (hppa*-*-hpux*, ia64-*-hpux*): Make them obsolete.
* hppa-hpux-nat.c: Remove file.
* hppa-hpux-tdep.c: Remove file.
* hppa-tdep.c (struct hppa_unwind_info, struct hppa_objfile_private):
Move them here from hppa-tdep.h
(hppa_objfile_priv_data, hppa_init_objfile_priv_data): Make it static.
(hppa_frame_prev_register_helper): Remove HPPA_FLAGS_REGNUM exception.
* hppa-tdep.h (struct hppa_unwind_info, struct hppa_objfile_private):
Move them to hppa-tdep.c.
(hppa_objfile_priv_data, hppa_init_objfile_priv_data): Remove
declarations.
* ia64-hpux-nat.c: Remove file.
* ia64-hpux-tdep.c: Remove file.
* ia64-hpux-tdep.h: Remove file.
* inf-ttrace.c: Remove file.
* inf-ttrace.h: Remove file.
* solib-ia64-hpux.c: Remove file.
* solib-ia64-hpux.h: Remove file.
* solib-pa64.c: Remove file.
* solib-pa64.h: Remove file.
* solib-som.c: Remove file.
* solib-som.h: Remove file.
* somread.c: Remove file.
* hppa-tdep.h (enum hppa_regnum): Add members for all space registers.
* hppaobsd-tdep.c (HPPAOBSD_SIZEOF_GREGS): Add comment.
(HPPANBSD_SIZEOF_GREGS): New define.
(hppaobsd_supply_gregset): Handle additional registers.
* hppabsd-nat.c (hppabsd_gregset_supplies_p): Adjust to indicate
we provide more registers now.
(hppabsd_supply_gregset): Supply additional registers.
(hppabsd_collect_gregset): Collect additional registers.
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
Put prototype declaration on same line as return type.
* objc-exp.y: Ditto.
* p-exp.y: Ditto.
* python/py-stopevent.h: Ditto.
For long function names, split parameters to allow function name
on same line as return type.
* solib-pa64.c: Ditto.
* varobj.c: Ditto.
* varobj.h: Ditto.
For long function declaration, use single line.
* hppa-tdep.h: Ditto.
* inferior.h: Ditto.
* hppa-tdep.h (unwind_table_entry): Update field names to match HP
runtime specification.
* hppa-tdep.c (internalize_unwinds, hppa_frame_cache): Likewise.
(unwind_command): Likewise.
(hppa_skip_trampoline_code): New prototypes.
* hppa-tdep.c (struct insn_pattern): New.
(hppa_long_branch_stub, hppa_long_branch_pic_stub)
(hppa_import_stub, hppa_import_pic_stub, hppa_plt_stub): Moved
here from hppa-linux-tdep.c
(HPPA_MAX_INSN_PATTERN_LEN): New define.
(hppa_match_insns, hppa_match_insns_relaxed, hppa_in_dyncall)
(hppa_in_solib_call_trampoline, hppa_skip_trampoline_code): New
functions based on functions removed from hppa-linux-tdep.c.
* hppa-linux-tdep.c (hppa_long_branch_stub)
(hppa_long_branch_pic_stub, hppa_import_stub)
(hppa_import_pic_stub, hppa_plt_stub): Moved to hppa-tdep.c.
(insns_match_pattern_relaxed, hppa_linux_in_dyncall)
(hppa_linux_in_solib_call_trampoline)
(hppa_linux_skip_trampoline_code): Removed.
(hppa_linux_init_abi): Set TDEP->in_solib_call_tranpoline to
hppa_in_solib_call_trampoline and skip_trampoline_code to
hppa_skip_trampoline_code.
* hppabsd-tdep.c (hppabsd_init_abi): Set
TDEP->in_solib_call_trampoline and skip_trampoline_code.
last argument to `gdb_byte *'.
* hppa-tdep.c (hppa32_convert_from_func_ptr_addr): Rewrite.
(hppa_frame_prev_register_helper): Change types of last argument
to `gdb_byte *'.
* hppa-hpux-tdep.c (hppa_hpux_sigtramp_frame_prev_register):
Change types of last argument to `gdb_byte *'.
HPPA_RET1_REGNUM and HPPA64_FP4_REGNUM.
* hppa-tdep.c (hppa64_integral_or_pointer_p)
(hppa64_floating_p) New functions.
(hppa64_push_dummy_call): Re-implement.
(hppa32_register_type): Rename argument reg_nr to regnum.
(hppa64_register_type): Likewise. Use HPPA64_FP4_REGNUM instead
of HPPA_FP4_REGNUM.
(hppa32_cannot_store_register): Renamed from
hppa_cannot_store_register.
(hppa64_cannot_store_register): New function.
(hppa_gdbarch_init): Set cannot_store_register and
cannot_fetch_register to hppa32_cannot_store_register or
hppa64_cannot_store_register when appropriate.
* hppa-hpux-tdep.c (IS_32BIT_TARGET): New.
(in_opd_section): New.
(hppa32_hpux_find_global_pointer): Rename from
hppa_hpux_som_find_global_pointer.
(hppa64_hpux_find_global_pointer): New.
(ldsid_pattern): New.
(hppa_hpux_search_pattern): New.
(hppa32_hpux_search_dummy_call_sequence): New.
(hppa64_hpux_search_dummy_call_sequence): New.
(hppa_hpux_find_import_stub_for_addr): New.
(hppa_hpux_sr_for_addr): New.
(hppa_hpux_find_dummy_bpaddr): New.
(hppa_hpux_init_abi): Use IS_32BIT_TARGET predicate.
(hppa_hpux_som_init_abi): Set find_global_pointer method to
hppa32_hpux_find_global_pointer instead of
hppa_hpux_som_find_global_pointer.
(hppa_hpux_elf_init_abi): Set find_global_pointer method.
* hppa-tdep.c (hppa_init_objfile_priv_data): New.
(read_unwind_info): Use function to initialize objfile-private data.
(hppa32_push_dummy_call): Don't automatically set the RP if there is
a push_dummy_code method.
(hppa64_push_dummy_call): Retrieve and set the global pointer.
Don't automatically set the RP if there is a push_dummy_code method.
* hppa-tdep.h (hppa_objfile_private): Add dummy_call_sequence_reg and
dummy_call_sequence_addr members.
(hppa_init_objfile_priv_data): New prototype.
* hppa-tdep.h (hppa_lookup_stub_minimal_symbol): Add declaration.
* solib-som.c (som_solib_create_inferior_hook): Replace stub
msymbol search by call to hppa_lookup_stub_minimal_symbol. This
extends the search to all objfiles, not just shared libraries.
Remove unused variable.
* Makefile.in (pa64solib_h, somsolib_h): Delete.
(solib_pa64_h, solib_som_h): New.
(HFILES_NO_SRCDIR, ALLDEPFILES): Replace somsolib.h with solib-som.h.
(hppa-hpux-tdep.o, hpread.o): Update dependencies.
(pa64solib.o, somsolib.o): Delete.
(solib-pa64.o, solib-som.o): New.
* hppa-hpux-tdep.c: Include new solib interfaces.
(hppa_hpux_som_init_abi): Attach to SOM solib interface.
(hppa_hpux_elf_init_abi): Attach to PA64 ELF solib interface.
* hppa-tdep.c (internalize_unwinds): If solib_get_text_base method
is available, use it to determine the base of unwind records.
* hppa-tdep.h (gdbarch_tdep): Add new solib methods.
* hpread.c: Replace somsolib.h with solib-som.h.
(hpread_process_one_debug_symbol): Use target vector to get thread
start address.
* config/pa/hppa64.mt (TDEPFILES): Use new solib interface.
* config/pa/hppahpux.mt (TDEPFILES): Likewise.
* config/pa/hpux.mh (NATDEPFILES): Delete references to target objects.
* config/pa/tm-hppah.h: Use new solib interface.
prototypes.
* hppa-tdep.c (hppa_read_pc): Rename from hppa_target_read_pc.
Make global. Remove HP-UX specific code. Use
frame_unwind_register_unsigned instead of
frame_unwind_register_signed.
(hppa_write_pc): Rename from hppa_target_write_pc. Make global.
Remove HP-UX specific code.
(hppa_unwind_pc): Make global. Remove HP-UX specific code.
(hppa_frame_prev_register_helper): Set "flags" register to zero
for all unwound frames.
(hppa_gdbarch_init): Adjust.
* hppa-hpux-tdep.c (HPPA_HPUX_SS_INSYSCALL): New define.
(hppa_hpux_read_pc, hppa_hpux_write_pc)
(hppa_hpux_unwind_pc): New functions.
(hppa_hpux_init_abi): Set read_pc, write_pc and unwind_pc.
* 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-tdep.c (SR4EXPORT_LDIL_OFFSET, SR4EXPORT_LDO_OFFSET): Remove
unused symbols.
* hppa-tdep.h (HPPA_INSTRUCTION_SIZE): Remove, since there are no more
references.
* hppa-tdep.h (hppa_frame_prev_register_helper): Pass save_regs
as pointer instead of array reference since HPUX compiler does
not accept unsized array arguments.
* somsolib.c (dld_flags_buffer): Use constant array size.
* 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.
* hppa-tdep.h (find_unwind_entry, hppa_get_field, hppa_extract_5_load)
(hppa_extract_5R_store, hppa_extract_5r_store, hppa_extract_17)
(hppa_extract_21, hppa_extract_14, hppa_low_sign_extend)
(hppa_sign_extend): Add prototype.
* hppa-tdep.c (get_field, extract_5_load, extract_5R_store)
(extract_5r_store, extract_17, extract_21, extract_14, low_sign_extend)
(sign_extend): Rename with hppa_ prefix and make non-static. Other
hppa targets will also use these functions.
(find_unwind_entry): Remove prototype (moved to hppa-tdep.h).
(hppa_in_solib_call_trampoline, hppa_in_solib_return_trampoline)
(hppa_skip_trampoline_code): Move to hppa-hpux-tdep.c
(hppa_gdbarch_init): Remove gdbarch setting of
skip_trampoline_code, in_solib_call_trampoline and
in_solib_return_trampoline.
* hppa-hpux-tdep.c (hppa32_hpux_in_solib_call_trampoline)
(hppa64_hpux_in_solib_call_trampoline): New functions, split from
hppa_in_solib_call_trampoline.
(hppa_hpux_in_solib_return_trampoline, hppa_hpux_skip_trampoline_code):
Moved from hppa-tdep.c.
(hppa_hpux_init_abi): Set gdbarch for skip_trampoline_code,
in_solib_call_trampoline and in_solib_return_trampoline.
* Makefile.in (hppa-hpux-tdep.o): Add $(hppa_tdep_h).
* hppa-hpux-tdep.c (hppa-tdep.h): Include.
(hppa_hpux_som_init_abi): Set is_elf to 0.
(hppa_hpux_elf_init_abi): Set is_elf to 1.
* hppa-tdep.c (low_text_segment_address): Remove global.
(record_text_segment_lowaddr): Pass in low address as parameter. Use
section offset to calculate segment address.
(internalize_unwinds): Define low_text_segment_address as local and
pass to record_text_segment_lowaddr for ELF targets.
(hppa_gdbarch_init): Zero fill tdep structure.
(hppa_dump_tdep): Print tdep structure.
* hppa-tdep.h (gdbarch_tdep): Add is_elf member to tdep structure.
