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634 Commits

Author SHA1 Message Date
Marco Barisione
2f822da535 gdb: generate the prefix name for prefix commands on demand 
Previously, the prefixname field of struct cmd_list_element was manually
set for prefix commands.  This seems verbose and error prone as it
required every single call to functions adding prefix commands to
specify the prefix name while the same information can be easily
generated.

Historically, this was not possible as the prefix field was null for
many commands, but this was fixed in commit
3f4d92ebdf by Philippe Waroquiers, so
we can rely on the prefix field being set when generating the prefix
name.

This commit also fixes a use after free in this scenario:
* A command gets created via Python (using the gdb.Command class).
  The prefix name member is dynamically allocated.
* An alias to the new command is created. The alias's prefixname is set
  to point to the prefixname for the original command with a direct
  assignment.
* A new command with the same name as the Python command is created.
* The object for the original Python command gets freed and its
  prefixname gets freed as well.
* The alias is updated to point to the new command, but its prefixname
  is not updated so it keeps pointing to the freed one.

gdb/ChangeLog:

	* command.h (add_prefix_cmd): Remove the prefixname argument as
	it can now be generated automatically.  Update all callers.
	(add_basic_prefix_cmd): Ditto.
	(add_show_prefix_cmd): Ditto.
	(add_prefix_cmd_suppress_notification): Ditto.
	(add_abbrev_prefix_cmd): Ditto.
	* cli/cli-decode.c (add_prefix_cmd): Ditto.
	(add_basic_prefix_cmd): Ditto.
	(add_show_prefix_cmd): Ditto.
	(add_prefix_cmd_suppress_notification): Ditto.
	(add_prefix_cmd_suppress_notification): Ditto.
	(add_abbrev_prefix_cmd): Ditto.
	* cli/cli-decode.h (struct cmd_list_element): Replace the
	prefixname member variable with a method which generates the
	prefix name at runtime.  Update all code reading the prefix
	name to use the method, and remove all code setting it.
	* python/py-cmd.c (cmdpy_destroyer): Remove code to free the
	prefixname member as it's now a method.
	(cmdpy_function): Determine if the command is a prefix by
	looking at prefixlist, not prefixname.
 2021-05-12 11:19:22 +01:00
Simon Marchi
f2a883a81e gdb: fix indentation in arm_record_data_proc_misc_ld_str 
The scopes under this "if" are over-indented, fix that.

gdb/ChangeLog:

	* arm-tdep.c (arm_record_data_proc_misc_ld_str): Fix
	indentation.

Change-Id: I84a551793207ca95d0bc4f122e336555c8179c0e
 2021-05-11 17:32:38 -04:00
Simon Marchi
c90e7d6352 gdbsupport, gdb: give names to observers 
Give a name to each observer, this will help produce more meaningful
debug message.

gdbsupport/ChangeLog:

	* observable.h (class observable) <struct observer> <observer>:
	Add name parameter.
	<name>: New field.
	<attach>: Add name parameter, update all callers.

Change-Id: Ie0cc4664925215b8d2b09e026011b7803549fba0
 2021-04-24 19:26:41 -04:00
Martin Liska
08dedd6631 Add startswith function and use it instead of CONST_STRNEQ. 
bfd/ChangeLog:

	* bfd-in.h (startswith): Add startswith function.
	(CONST_STRNEQ): Remove.
	* bfd-in2.h (startswith): Regenerate with make headers.
	* archive.c (bfd_slurp_armap): Replace usage of CONST_STRNEQ with startswith.
	(_bfd_slurp_extended_name_table): Likewise.
	* archive64.c (_bfd_archive_64_bit_slurp_armap): Likewise.
	* bfd.c (bfd_get_sign_extend_vma): Likewise.
	(bfd_convert_section_size): Likewise.
	(bfd_convert_section_contents): Likewise.
	* coff-stgo32.c (go32exe_create_stub): Likewise.
	(go32exe_check_format): Likewise.
	* coffcode.h (styp_to_sec_flags): Likewise.
	(GNU_DEBUGALTLINK): Likewise.
	* coffgen.c (_bfd_coff_section_already_linked): Likewise.
	(coff_gc_sweep): Likewise.
	(bfd_coff_gc_sections): Likewise.
	* cofflink.c (coff_link_add_symbols): Likewise.
	(process_embedded_commands): Likewise.
	* compress.c (bfd_is_section_compressed_with_header): Likewise.
	(bfd_init_section_decompress_status): Likewise.
	* dwarf2.c (find_debug_info): Likewise.
	(place_sections): Likewise.
	* ecoff.c (_bfd_ecoff_slurp_armap): Likewise.
	* elf-m10300.c (_bfd_mn10300_elf_size_dynamic_sections): Likewise.
	* elf.c (_bfd_elf_make_section_from_shdr): Likewise.
	(assign_section_numbers): Likewise.
	(elfcore_grok_win32pstatus): Likewise.
	* elf32-arm.c (cmse_scan): Likewise.
	(elf32_arm_gc_mark_extra_sections): Likewise.
	(elf32_arm_size_dynamic_sections): Likewise.
	(is_arm_elf_unwind_section_name): Likewise.
	* elf32-bfin.c (bfin_size_dynamic_sections): Likewise.
	* elf32-cr16.c (_bfd_cr16_elf_size_dynamic_sections): Likewise.
	* elf32-cris.c (elf_cris_size_dynamic_sections): Likewise.
	* elf32-csky.c (csky_elf_size_dynamic_sections): Likewise.
	* elf32-hppa.c (elf32_hppa_size_dynamic_sections): Likewise.
	* elf32-iq2000.c (iq2000_elf_check_relocs): Likewise.
	* elf32-lm32.c (lm32_elf_size_dynamic_sections): Likewise.
	* elf32-m32r.c (m32r_elf_size_dynamic_sections): Likewise.
	* elf32-m68k.c (elf_m68k_size_dynamic_sections): Likewise.
	* elf32-metag.c (elf_metag_size_dynamic_sections): Likewise.
	* elf32-msp430.c (msp430_elf_relax_delete_bytes): Likewise.
	* elf32-nios2.c (nios2_elf32_size_dynamic_sections): Likewise.
	* elf32-or1k.c (or1k_elf_size_dynamic_sections): Likewise.
	* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise.
	* elf32-s390.c (elf_s390_size_dynamic_sections): Likewise.
	* elf32-score.c (s3_bfd_score_elf_size_dynamic_sections): Likewise.
	* elf32-score7.c (s7_bfd_score_elf_size_dynamic_sections): Likewise.
	* elf32-sh.c (sh_elf_size_dynamic_sections): Likewise.
	* elf32-tic6x.c (is_tic6x_elf_unwind_section_name): Likewise.
	(elf32_tic6x_size_dynamic_sections): Likewise.
	* elf32-vax.c (elf_vax_size_dynamic_sections): Likewise.
	* elf32-xtensa.c (elf_xtensa_size_dynamic_sections): Likewise.
	(xtensa_is_insntable_section): Likewise.
	(xtensa_is_littable_section): Likewise.
	(xtensa_is_proptable_section): Likewise.
	(xtensa_property_section_name): Likewise.
	(xtensa_callback_required_dependence): Likewise.
	* elf64-alpha.c (elf64_alpha_size_dynamic_sections): Likewise.
	* elf64-hppa.c (elf64_hppa_size_dynamic_sections): Likewise.
	* elf64-ia64-vms.c (is_unwind_section_name): Likewise.
	(get_reloc_section): Likewise.
	(elf64_ia64_size_dynamic_sections): Likewise.
	(elf64_ia64_object_p): Likewise.
	* elf64-mmix.c (mmix_elf_add_symbol_hook): Likewise.
	* elf64-ppc.c (ppc64_elf_size_dynamic_sections): Likewise.
	* elf64-s390.c (elf_s390_size_dynamic_sections): Likewise.
	* elflink.c (elf_link_add_object_symbols): Likewise.
	(_bfd_elf_gc_mark_extra_sections): Likewise.
	(bfd_elf_parse_eh_frame_entries): Likewise.
	(_bfd_elf_section_already_linked): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_size_dynamic_sections): Likewise.
	* elfnn-ia64.c (is_unwind_section_name): Likewise.
	(elfNN_ia64_size_dynamic_sections): Likewise.
	(elfNN_ia64_object_p): Likewise.
	* elfxx-mips.c (FN_STUB_P): Likewise.
	(CALL_STUB_P): Likewise.
	(CALL_FP_STUB_P): Likewise.
	(_bfd_mips_elf_section_from_shdr): Likewise.
	(_bfd_mips_elf_fake_sections): Likewise.
	(_bfd_mips_elf_size_dynamic_sections): Likewise.
	(_bfd_mips_final_write_processing): Likewise.
	(_bfd_mips_elf_final_link): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_size_dynamic_sections): Likewise.
	* elfxx-x86.c (elf_i386_is_reloc_section): Likewise.
	(elf_x86_64_is_reloc_section): Likewise.
	* hpux-core.c (thread_section_p): Likewise.
	* libcoff.h (bfd_pei_p): Likewise.
	* linker.c (REAL): Likewise.
	(unwrap_hash_lookup): Likewise.
	(_bfd_generic_link_add_one_symbol): Likewise.
	* mmo.c (mmo_internal_write_section): Likewise.
	* osf-core.c (osf_core_core_file_p): Likewise.
	* pef.c (bfd_pef_print_symbol): Likewise.
	* pei-x86_64.c (pex64_print_all_pdata_sections): Likewise.
	* som.c (som_slurp_symbol_table): Likewise.
	(som_slurp_armap): Likewise.
	* wasm-module.c (wasm_compute_custom_section_file_position): Likewise.

binutils/ChangeLog:

	* dlltool.c (scan_drectve_symbols): Replace usage of CONST_STRNEQ with startswith.
	* emul_aix.c (ar_emul_aix_parse_arg): Likewise.
	* objcopy.c (is_mergeable_note_section): Likewise.
	* objdump.c (dump_dwarf_section): Likewise.
	* prdbg.c (pr_method_type): Likewise.
	(pr_class_baseclass): Likewise.
	(tg_class_baseclass): Likewise.
	* readelf.c (process_lto_symbol_tables): Likewise.
	* stabs.c (ULLHIGH): Likewise.
	(parse_stab_argtypes): Likewise.
	(stab_demangle_function_name): Likewise.

gas/ChangeLog:

	* config/tc-i386.c (md_parse_option): Replace usage of CONST_STRNEQ with startswith.
	(x86_64_section_word): Likewise.
	* config/tc-sparc.c (md_parse_option): Likewise.

gdb/ChangeLog:

	* arm-tdep.c (show_disassembly_style_sfunc): Replace usage of CONST_STRNEQ with startswith.
	(_initialize_arm_tdep): Likewise.

ld/ChangeLog:

	* emultempl/aix.em: Replace usage of CONST_STRNEQ with startswith.
	* emultempl/beos.em: Likewise.
	* emultempl/elf.em: Likewise.
	* emultempl/pe.em: Likewise.
	* emultempl/pep.em: Likewise.
	* emultempl/xtensaelf.em: Likewise.
	* ldctor.c (ctor_prio): Likewise.
	* ldelf.c (ldelf_try_needed): Likewise.
	(ldelf_parse_ld_so_conf): Likewise.
	(ldelf_after_open): Likewise.
	(output_rel_find): Likewise.
	(ldelf_place_orphan): Likewise.
	* ldfile.c (ldfile_add_library_path): Likewise.
	* ldlang.c (lang_add_input_file): Likewise.
	* ldmain.c (get_sysroot): Likewise.
	(get_emulation): Likewise.
	(add_archive_element): Likewise.
	* ldwrite.c (unsplittable_name): Likewise.
	(clone_section): Likewise.
	* lexsup.c (parse_args): Likewise.
	* pe-dll.c (is_import): Likewise.
	(pe_implied_import_dll): Likewise.

opcodes/ChangeLog:

	* aarch64-dis.c (parse_aarch64_dis_option): Replace usage of CONST_STRNEQ with startswith.
	* arc-dis.c (parse_option): Likewise.
	* arm-dis.c (parse_arm_disassembler_options): Likewise.
	* cris-dis.c (print_with_operands): Likewise.
	* h8300-dis.c (bfd_h8_disassemble): Likewise.
	* i386-dis.c (print_insn): Likewise.
	* ia64-gen.c (fetch_insn_class): Likewise.
	(parse_resource_users): Likewise.
	(in_iclass): Likewise.
	(lookup_specifier): Likewise.
	(insert_opcode_dependencies): Likewise.
	* mips-dis.c (parse_mips_ase_option): Likewise.
	(parse_mips_dis_option): Likewise.
	* s390-dis.c (disassemble_init_s390): Likewise.
	* wasm32-dis.c (parse_wasm32_disassembler_options): Likewise.
 2021-03-22 11:01:43 +01:00
Simon Marchi
7cb6d92a3f gdb: convert arm to new-style debug macros 
gdb/ChangeLog:

	* arm-tdep.c (arm_debug_printf): Add and use throughout file.

Change-Id: Iec5c2955cb79d8c0288ffded2c8a58b7eb7e3554
 2021-01-21 09:26:44 -05:00
Simon Marchi
6bd434d6ca gdb: make some variables static 
I'm trying to enable clang's -Wmissing-variable-declarations warning.
This patch fixes all the obvious spots where we can simply add "static"
(at least, found when building on x86-64 Linux).

gdb/ChangeLog:

	* aarch64-linux-tdep.c (aarch64_linux_record_tdep): Make static.
	* aarch64-tdep.c (tdesc_aarch64_list, aarch64_prologue_unwind,
	aarch64_stub_unwind, aarch64_normal_base, ): Make static.
	* arm-linux-tdep.c (arm_prologue_unwind): Make static.
	* arm-tdep.c (struct frame_unwind): Make static.
	* auto-load.c (auto_load_safe_path_vec): Make static.
	* csky-tdep.c (csky_stub_unwind): Make static.
	* gdbarch.c (gdbarch_data_registry): Make static.
	* gnu-v2-abi.c (gnu_v2_abi_ops): Make static.
	* i386-netbsd-tdep.c (i386nbsd_mc_reg_offset): Make static.
	* i386-tdep.c (i386_frame_setup_skip_insns,
	i386_tramp_chain_in_reg_insns, i386_tramp_chain_on_stack_insns):
	Make static.
	* infrun.c (observer_mode): Make static.
	* linux-nat.c (sigchld_action): Make static.
	* linux-thread-db.c (thread_db_list): Make static.
	* maint-test-options.c (maintenance_test_options_list):
	* mep-tdep.c (mep_csr_registers): Make static.
	* mi/mi-cmds.c (struct mi_cmd_stats): Remove struct type name.
	(stats): Make static.
	* nat/linux-osdata.c (struct osdata_type): Make static.
	* ppc-netbsd-tdep.c (ppcnbsd_reg_offsets): Make static.
	* progspace.c (last_program_space_num): Make static.
	* python/py-param.c (struct parm_constant): Remove struct type
	name.
	(parm_constants): Make static.
	* python/py-record-btrace.c (btpy_list_methods): Make static.
	* python/py-record.c (recpy_gap_type): Make static.
	* record.c (record_goto_cmdlist): Make static.
	* regcache.c (regcache_descr_handle): Make static.
	* registry.h (DEFINE_REGISTRY): Make definition static.
	* symmisc.c (std_in, std_out, std_err): Make static.
	* top.c (previous_saved_command_line): Make static.
	* tracepoint.c (trace_user, trace_notes, trace_stop_notes): Make
	static.
	* unittests/command-def-selftests.c (nr_duplicates,
	nr_invalid_prefixcmd, lists): Make static.
	* unittests/observable-selftests.c (test_notification): Make
	static.
	* unittests/optional/assignment/1.cc (counter): Make static.
	* unittests/optional/assignment/2.cc (counter): Make static.
	* unittests/optional/assignment/3.cc (counter): Make static.
	* unittests/optional/assignment/4.cc (counter): Make static.
	* unittests/optional/assignment/5.cc (counter): Make static.
	* unittests/optional/assignment/6.cc (counter): Make static.

gdbserver/ChangeLog:

	* ax.cc (bytecode_address_table): Make static.
	* debug.cc (debug_file): Make static.
	* linux-low.cc (stopping_threads): Make static.
	(step_over_bkpt): Make static.
	* linux-x86-low.cc (amd64_emit_ops, i386_emit_ops): Make static.
	* tracepoint.cc (stop_tracing_bkpt, flush_trace_buffer_bkpt,
	alloced_trace_state_variables, trace_buffer_ctrl,
	tracing_start_time, tracing_stop_time, tracing_user_name,
	tracing_notes, tracing_stop_note): Make static.

Change-Id: Ic1d8034723b7802502bda23770893be2338ab020
 2021-01-20 20:55:05 -05:00
Luis Machado
a9a87d3525 trad-frame cleanups 
With the new member functions for struct trad_frame_saved_reg, there is no
need to invoke some of the set/get functions anymore.  This patch removes
those and adjusts all callers.

Even though the most natural initial state of a saved register value is
UNKNOWN, there are target backends relying on the previous initial state
of REALREG set to a register's own number. I noticed this in at least a
couple targets: aarch64 and riscv.

Because of that, I decided to keep the reset function that sets the set of
register values to REALREG. I can't exercise all the targets to make sure
the initial state change won't break things, hence why it is risky to change
the default.

Validated with --enable-targets=all on aarch64-linux Ubuntu 18.04/20.04.

gdb/ChangeLog

2021-01-19  Luis Machado  <luis.machado@linaro.org>

	* trad-frame.h (trad_frame_saved_reg) <set_value_bytes>: Allocate
	memory and save data.
	(trad_frame_set_value, trad_frame_set_realreg, trad_frame_set_addr)
	(trad_frame_set_unknown, trad_frame_set_value_bytes)
	(trad_frame_value_p, trad_frame_addr_p, trad_frame_realreg_p)
	(trad_frame_value_bytes_p): Remove.
	(trad_frame_reset_saved_regs): Adjust documentation.
	* trad-frame.c (trad_frame_alloc_saved_regs): Initialize via a
	constructor and reset the state of the registers.
	(trad_frame_value_p, trad_frame_addr_p, trad_frame_realreg_p)
	(trad_frame_value_bytes_p, trad_frame_set_value)
	(trad_frame_set_realreg, trad_frame_set_addr)
	(trad_frame_set_unknown, trad_frame_set_value_bytes): Remove.
	(trad_frame_set_reg_realreg): Update to call member function.
	(trad_frame_set_reg_addr, trad_frame_set_reg_value_bytes): Likewise.
	(trad_frame_get_prev_register): Likewise.

	* aarch64-tdep.c (aarch64_analyze_prologue)
	(aarch64_analyze_prologue_test, aarch64_make_prologue_cache_1)
	(aarch64_prologue_prev_register): Update to use member functions.
	* alpha-mdebug-tdep.c (alpha_mdebug_frame_unwind_cache): Likewise.
	* alpha-tdep.c (alpha_heuristic_frame_unwind_cache): Likewise.
	* arc-tdep.c (arc_print_frame_cache, arc_make_frame_cache): Likewise.
	* arm-tdep.c (arm_make_prologue_cache, arm_exidx_fill_cache)
	(arm_make_epilogue_frame_cache): Likewise.
	* avr-tdep.c (avr_frame_unwind_cache)
	(avr_frame_prev_register): Likewise.
	* cris-tdep.c (cris_scan_prologue): Likewise.
	* csky-tdep.c (csky_frame_unwind_cache): Likewise.
	* frv-tdep.c (frv_analyze_prologue): Likewise.
	* hppa-tdep.c (hppa_frame_cache, hppa_fallback_frame_cache): Likewise.
	* lm32-tdep.c (lm32_frame_cache): Likewise.
	* m32r-tdep.c (m32r_frame_unwind_cache): Likewise.
	* m68hc11-tdep.c (m68hc11_frame_unwind_cache): Likewise.
	* mips-tdep.c (set_reg_offset, mips_insn16_frame_cache)
	(mips_micro_frame_cache, mips_insn32_frame_cache): Likewise.
	(reset_saved_regs): Adjust to set realreg.
	* riscv-tdep.c (riscv_scan_prologue, riscv_frame_cache): Adjust to
	call member functions.
	* rs6000-tdep.c (rs6000_frame_cache, rs6000_epilogue_frame_cache)
	* s390-tdep.c (s390_prologue_frame_unwind_cache)
	(s390_backchain_frame_unwind_cache): Likewise.
	* score-tdep.c (score7_analyze_prologue)
	(score3_analyze_prologue, score_make_prologue_cache): Likewise.
	* sparc-netbsd-tdep.c (sparc32nbsd_sigcontext_saved_regs): Likewise.
	* sparc-sol2-tdep.c (sparc32_sol2_sigtramp_frame_cache): Likewise.
	* sparc64-netbsd-tdep.c (sparc64nbsd_sigcontext_saved_regs): Likewise.
	* sparc64-sol2-tdep.c (sparc64_sol2_sigtramp_frame_cache): Likewise.
	* tilegx-tdep.c (tilegx_analyze_prologue)
	(tilegx_frame_cache): Likewise.
	* v850-tdep.c (v850_frame_cache): Likewise.
	* vax-tdep.c (vax_frame_cache): Likewise.
 2021-01-19 14:43:34 -03:00
Luis Machado
098caef485 Refactor struct trad_frame_saved_regs 
The following patch drops the overloading going on with the trad_frame_saved_reg
struct and defines a new struct with a KIND enum and a union of different
fields.

The new struct looks like this:

struct trad_frame_saved_reg
 {
  setters/getters

  ...

private:

  trad_frame_saved_reg_kind m_kind;

  union {
    LONGEST value;
    int realreg;
    LONGEST addr;
    const gdb_byte *value_bytes;
  } m_reg;
};

And the enums look like this:

/* Describes the kind of encoding a stored register has.  */
enum class trad_frame_saved_reg_kind
{
  /* Register value is unknown.  */
  UNKNOWN = 0,
  /* Register value is a constant.  */
  VALUE,
  /* Register value is in another register.  */
  REALREG,
  /* Register value is at an address.  */
  ADDR,
  /* Register value is a sequence of bytes.  */
  VALUE_BYTES
};

The patch also adds setters/getters and updates all the users of the old
struct.

It is worth mentioning that due to the previous overloaded nature of the
fields, some tdep files like to store negative offsets and indexes in the ADDR
field, so I kept the ADDR as LONGEST instead of CORE_ADDR. Those cases may
be better supported by a new enum entry.

I have not addressed those cases in this patch to prevent unwanted breakage,
given I have no way to test some of the targets. But it would be nice to
clean those up eventually.

The change to frame-unwind.* is to constify the parameter being passed to the
unwinding functions, given we now accept a "const gdb_byte *" for value bytes.

Tested on aarch64-linux/Ubuntu 20.04/18.04 and by building GDB with
--enable-targets=all.

gdb/ChangeLog:

2021-01-04  Luis Machado  <luis.machado@linaro.org>

	Update all users of trad_frame_saved_reg to use the new member
	functions.

	Remote all struct keywords from declarations of trad_frame_saved_reg
	types, except on forward declarations.

	* aarch64-tdep.c: Update.
	* alpha-mdebug-tdep.c: Update.
	* alpha-tdep.c: Update.
	* arc-tdep.c: Update.
	* arm-tdep.c: Update.
	* avr-tdep.c: Update.
	* cris-tdep.c: Update.
	* csky-tdep.c: Update.
	* frv-tdep.c: Update.
	* hppa-linux-tdep.c: Update.
	* hppa-tdep.c: Update.
	* hppa-tdep.h: Update.
	* lm32-tdep.c: Update.
	* m32r-linux-tdep.c: Update.
	* m32r-tdep.c: Update.
	* m68hc11-tdep.c: Update.
	* mips-tdep.c: Update.
	* moxie-tdep.c: Update.
	* riscv-tdep.c: Update.
	* rs6000-tdep.c: Update.
	* s390-linux-tdep.c: Update.
	* s390-tdep.c: Update.
	* score-tdep.c: Update.
	* sparc-netbsd-tdep.c: Update.
	* sparc-sol2-tdep.c: Update.
	* sparc64-fbsd-tdep.c: Update.
	* sparc64-netbsd-tdep.c: Update.
	* sparc64-obsd-tdep.c: Update.
	* sparc64-sol2-tdep.c: Update.
	* tilegx-tdep.c: Update.
	* v850-tdep.c: Update.
	* vax-tdep.c: Update.

	* frame-unwind.c (frame_unwind_got_bytes): Make parameter const.
	* frame-unwind.h (frame_unwind_got_bytes): Likewise.

	* trad-frame.c: Update.
	Remove TF_REG_* enum.
	(trad_frame_alloc_saved_regs): Add a static assertion to check for
	a trivially-constructible struct.
	(trad_frame_reset_saved_regs): Adjust to use member function.
	(trad_frame_value_p): Likewise.
	(trad_frame_addr_p): Likewise.
	(trad_frame_realreg_p): Likewise.
	(trad_frame_value_bytes_p): Likewise.
	(trad_frame_set_value): Likewise.
	(trad_frame_set_realreg): Likewise.
	(trad_frame_set_addr): Likewise.
	(trad_frame_set_unknown): Likewise.
	(trad_frame_set_value_bytes): Likewise.
	(trad_frame_get_prev_register): Likewise.
	* trad-frame.h: Update.
	(trad_frame_saved_reg_kind): New enum.
	(struct trad_frame_saved_reg) <addr, realreg, data>: Remove.
	<m_kind, m_reg>: New member fields.
	<set_value, set_realreg, set_addr, set_unknown, set_value_bytes>
	<kind, value, realreg, addr, value_bytes, is_value, is_realreg>
	<is_addr, is_unknown, is_value_bytes>: New member functions.
 2021-01-04 12:18:31 -03:00
Joel Brobecker
3666a04883 Update copyright year range in all GDB files 
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...

gdb/ChangeLog

        Update copyright year range in copyright header of all GDB files.
 2021-01-01 12:12:21 +04:00
Simon Marchi
187b041e25 gdb: move displaced stepping logic to gdbarch, allow starting concurrent displaced steps 
Today, GDB only allows a single displaced stepping operation to happen
per inferior at a time.  There is a single displaced stepping buffer per
inferior, whose address is fixed (obtained with
gdbarch_displaced_step_location), managed by infrun.c.

In the case of the AMD ROCm target [1] (in the context of which this
work has been done), it is typical to have thousands of threads (or
waves, in SMT terminology) executing the same code, hitting the same
breakpoint (possibly conditional) and needing to to displaced step it at
the same time.  The limitation of only one displaced step executing at a
any given time becomes a real bottleneck.

To fix this bottleneck, we want to make it possible for threads of a
same inferior to execute multiple displaced steps in parallel.  This
patch builds the foundation for that.

In essence, this patch moves the task of preparing a displaced step and
cleaning up after to gdbarch functions.  This allows using different
schemes for allocating and managing displaced stepping buffers for
different platforms.  The gdbarch decides how to assign a buffer to a
thread that needs to execute a displaced step.

On the ROCm target, we are able to allocate one displaced stepping
buffer per thread, so a thread will never have to wait to execute a
displaced step.

On Linux, the entry point of the executable if used as the displaced
stepping buffer, since we assume that this code won't get used after
startup.  From what I saw (I checked with a binary generated against
glibc and musl), on AMD64 we have enough space there to fit two
displaced stepping buffers.  A subsequent patch makes AMD64/Linux use
two buffers.

In addition to having multiple displaced stepping buffers, there is also
the idea of sharing displaced stepping buffers between threads.  Two
threads doing displaced steps for the same PC could use the same buffer
at the same time.  Two threads stepping over the same instruction (same
opcode) at two different PCs may also be able to share a displaced
stepping buffer.  This is an idea for future patches, but the
architecture built by this patch is made to allow this.

Now, the implementation details.  The main part of this patch is moving
the responsibility of preparing and finishing a displaced step to the
gdbarch.  Before this patch, preparing a displaced step is driven by the
displaced_step_prepare_throw function.  It does some calls to the
gdbarch to do some low-level operations, but the high-level logic is
there.  The steps are roughly:

- Ask the gdbarch for the displaced step buffer location
- Save the existing bytes in the displaced step buffer
- Ask the gdbarch to copy the instruction into the displaced step buffer
- Set the pc of the thread to the beginning of the displaced step buffer

Similarly, the "fixup" phase, executed after the instruction was
successfully single-stepped, is driven by the infrun code (function
displaced_step_finish).  The steps are roughly:

- Restore the original bytes in the displaced stepping buffer
- Ask the gdbarch to fixup the instruction result (adjust the target's
  registers or memory to do as if the instruction had been executed in
  its original location)

The displaced_step_inferior_state::step_thread field indicates which
thread (if any) is currently using the displaced stepping buffer, so it
is used by displaced_step_prepare_throw to check if the displaced
stepping buffer is free to use or not.

This patch defers the whole task of preparing and cleaning up after a
displaced step to the gdbarch.  Two new main gdbarch methods are added,
with the following semantics:

  - gdbarch_displaced_step_prepare: Prepare for the given thread to
    execute a displaced step of the instruction located at its current PC.
    Upon return, everything should be ready for GDB to resume the thread
    (with either a single step or continue, as indicated by
    gdbarch_displaced_step_hw_singlestep) to make it displaced step the
    instruction.

  - gdbarch_displaced_step_finish: Called when the thread stopped after
    having started a displaced step.  Verify if the instruction was
    executed, if so apply any fixup required to compensate for the fact
    that the instruction was executed at a different place than its
    original pc.  Release any resources that were allocated for this
    displaced step.  Upon return, everything should be ready for GDB to
    resume the thread in its "normal" code path.

The displaced_step_prepare_throw function now pretty much just offloads
to gdbarch_displaced_step_prepare and the displaced_step_finish function
offloads to gdbarch_displaced_step_finish.

The gdbarch_displaced_step_location method is now unnecessary, so is
removed.  Indeed, the core of GDB doesn't know how many displaced step
buffers there are nor where they are.

To keep the existing behavior for existing architectures, the logic that
was previously implemented in infrun.c for preparing and finishing a
displaced step is moved to displaced-stepping.c, to the
displaced_step_buffer class.  Architectures are modified to implement
the new gdbarch methods using this class.  The behavior is not expected
to change.

The other important change (which arises from the above) is that the
core of GDB no longer prevents concurrent displaced steps.  Before this
patch, start_step_over walks the global step over chain and tries to
initiate a step over (whether it is in-line or displaced).  It follows
these rules:

  - if an in-line step is in progress (in any inferior), don't start any
    other step over
  - if a displaced step is in progress for an inferior, don't start
    another displaced step for that inferior

After starting a displaced step for a given inferior, it won't start
another displaced step for that inferior.

In the new code, start_step_over simply tries to initiate step overs for
all the threads in the list.  But because threads may be added back to
the global list as it iterates the global list, trying to initiate step
overs, start_step_over now starts by stealing the global queue into a
local queue and iterates on the local queue.  In the typical case, each
thread will either:

  - have initiated a displaced step and be resumed
  - have been added back by the global step over queue by
    displaced_step_prepare_throw, because the gdbarch will have returned
    that there aren't enough resources (i.e. buffers) to initiate a
    displaced step for that thread

Lastly, if start_step_over initiates an in-line step, it stops
iterating, and moves back whatever remaining threads it had in its local
step over queue to the global step over queue.

Two other gdbarch methods are added, to handle some slightly annoying
corner cases.  They feel awkwardly specific to these cases, but I don't
see any way around them:

  - gdbarch_displaced_step_copy_insn_closure_by_addr: in
    arm_pc_is_thumb, arm-tdep.c wants to get the closure for a given
    buffer address.

  - gdbarch_displaced_step_restore_all_in_ptid: when a process forks
    (at least on Linux), the address space is copied.  If some displaced
    step buffers were in use at the time of the fork, we need to restore
    the original bytes in the child's address space.

These two adjustments are also made in infrun.c:

  - prepare_for_detach: there may be multiple threads doing displaced
    steps when we detach, so wait until all of them are done

  - handle_inferior_event: when we handle a fork event for a given
    thread, it's possible that other threads are doing a displaced step at
    the same time.  Make sure to restore the displaced step buffer
    contents in the child for them.

[1] https://github.com/ROCm-Developer-Tools/ROCgdb

gdb/ChangeLog:

	* displaced-stepping.h (struct
	displaced_step_copy_insn_closure): Adjust comments.
	(struct displaced_step_inferior_state) <step_thread,
	step_gdbarch, step_closure, step_original, step_copy,
	step_saved_copy>: Remove fields.
	(struct displaced_step_thread_state): New.
	(struct displaced_step_buffer): New.
	* displaced-stepping.c (displaced_step_buffer::prepare): New.
	(write_memory_ptid): Move from infrun.c.
	(displaced_step_instruction_executed_successfully): New,
	factored out of displaced_step_finish.
	(displaced_step_buffer::finish): New.
	(displaced_step_buffer::copy_insn_closure_by_addr): New.
	(displaced_step_buffer::restore_in_ptid): New.
	* gdbarch.sh (displaced_step_location): Remove.
	(displaced_step_prepare, displaced_step_finish,
	displaced_step_copy_insn_closure_by_addr,
	displaced_step_restore_all_in_ptid): New.
	* gdbarch.c: Re-generate.
	* gdbarch.h: Re-generate.
	* gdbthread.h (class thread_info) <displaced_step_state>: New
	field.
	(thread_step_over_chain_remove): New declaration.
	(thread_step_over_chain_next): New declaration.
	(thread_step_over_chain_length): New declaration.
	* thread.c (thread_step_over_chain_remove): Make non-static.
	(thread_step_over_chain_next): New.
	(global_thread_step_over_chain_next): Use
	thread_step_over_chain_next.
	(thread_step_over_chain_length): New.
	(global_thread_step_over_chain_enqueue): Add debug print.
	(global_thread_step_over_chain_remove): Add debug print.
	* infrun.h (get_displaced_step_copy_insn_closure_by_addr):
	Remove.
	* infrun.c (get_displaced_stepping_state): New.
	(displaced_step_in_progress_any_inferior): Remove.
	(displaced_step_in_progress_thread): Adjust.
	(displaced_step_in_progress): Adjust.
	(displaced_step_in_progress_any_thread): New.
	(get_displaced_step_copy_insn_closure_by_addr): Remove.
	(gdbarch_supports_displaced_stepping): Use
	gdbarch_displaced_step_prepare_p.
	(displaced_step_reset): Change parameter from inferior to
	thread.
	(displaced_step_prepare_throw): Implement using
	gdbarch_displaced_step_prepare.
	(write_memory_ptid): Move to displaced-step.c.
	(displaced_step_restore): Remove.
	(displaced_step_finish): Implement using
	gdbarch_displaced_step_finish.
	(start_step_over): Allow starting more than one displaced step.
	(prepare_for_detach): Handle possibly multiple threads doing
	displaced steps.
	(handle_inferior_event): Handle possibility that fork event
	happens while another thread displaced steps.
	* linux-tdep.h (linux_displaced_step_prepare): New.
	(linux_displaced_step_finish): New.
	(linux_displaced_step_copy_insn_closure_by_addr): New.
	(linux_displaced_step_restore_all_in_ptid): New.
	(linux_init_abi): Add supports_displaced_step parameter.
	* linux-tdep.c (struct linux_info) <disp_step_buf>: New field.
	(linux_displaced_step_prepare): New.
	(linux_displaced_step_finish): New.
	(linux_displaced_step_copy_insn_closure_by_addr): New.
	(linux_displaced_step_restore_all_in_ptid): New.
	(linux_init_abi): Add supports_displaced_step parameter,
	register displaced step methods if true.
	(_initialize_linux_tdep): Register inferior_execd observer.
	* amd64-linux-tdep.c (amd64_linux_init_abi_common): Add
	supports_displaced_step parameter, adjust call to
	linux_init_abi.  Remove call to
	set_gdbarch_displaced_step_location.
	(amd64_linux_init_abi): Adjust call to
	amd64_linux_init_abi_common.
	(amd64_x32_linux_init_abi): Likewise.
	* aarch64-linux-tdep.c (aarch64_linux_init_abi): Adjust call to
	linux_init_abi.  Remove call to
	set_gdbarch_displaced_step_location.
	* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
	* i386-linux-tdep.c (i386_linux_init_abi): Likewise.
	* alpha-linux-tdep.c (alpha_linux_init_abi): Adjust call to
	linux_init_abi.
	* arc-linux-tdep.c (arc_linux_init_osabi): Likewise.
	* bfin-linux-tdep.c (bfin_linux_init_abi): Likewise.
	* cris-linux-tdep.c (cris_linux_init_abi): Likewise.
	* csky-linux-tdep.c (csky_linux_init_abi): Likewise.
	* frv-linux-tdep.c (frv_linux_init_abi): Likewise.
	* hppa-linux-tdep.c (hppa_linux_init_abi): Likewise.
	* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
	* m32r-linux-tdep.c (m32r_linux_init_abi): Likewise.
	* m68k-linux-tdep.c (m68k_linux_init_abi): Likewise.
	* microblaze-linux-tdep.c (microblaze_linux_init_abi): Likewise.
	* mips-linux-tdep.c (mips_linux_init_abi): Likewise.
	* mn10300-linux-tdep.c (am33_linux_init_osabi): Likewise.
	* nios2-linux-tdep.c (nios2_linux_init_abi): Likewise.
	* or1k-linux-tdep.c (or1k_linux_init_abi): Likewise.
	* riscv-linux-tdep.c (riscv_linux_init_abi): Likewise.
	* s390-linux-tdep.c (s390_linux_init_abi_any): Likewise.
	* sh-linux-tdep.c (sh_linux_init_abi): Likewise.
	* sparc-linux-tdep.c (sparc32_linux_init_abi): Likewise.
	* sparc64-linux-tdep.c (sparc64_linux_init_abi): Likewise.
	* tic6x-linux-tdep.c (tic6x_uclinux_init_abi): Likewise.
	* tilegx-linux-tdep.c (tilegx_linux_init_abi): Likewise.
	* xtensa-linux-tdep.c (xtensa_linux_init_abi): Likewise.
	* ppc-linux-tdep.c (ppc_linux_init_abi): Adjust call to
	linux_init_abi.  Remove call to
	set_gdbarch_displaced_step_location.
	* arm-tdep.c (arm_pc_is_thumb): Call
	gdbarch_displaced_step_copy_insn_closure_by_addr instead of
	get_displaced_step_copy_insn_closure_by_addr.
	* rs6000-aix-tdep.c (rs6000_aix_init_osabi): Adjust calls to
	clear gdbarch methods.
	* rs6000-tdep.c (struct ppc_inferior_data): New structure.
	(get_ppc_per_inferior): New function.
	(ppc_displaced_step_prepare): New function.
	(ppc_displaced_step_finish): New function.
	(ppc_displaced_step_restore_all_in_ptid): New function.
	(rs6000_gdbarch_init): Register new gdbarch methods.
	* s390-tdep.c (s390_gdbarch_init): Don't call
	set_gdbarch_displaced_step_location, set new gdbarch methods.

gdb/testsuite/ChangeLog:

	* gdb.arch/amd64-disp-step-avx.exp: Adjust pattern.
	* gdb.threads/forking-threads-plus-breakpoint.exp: Likewise.
	* gdb.threads/non-stop-fair-events.exp: Likewise.

Change-Id: I387cd235a442d0620ec43608fd3dc0097fcbf8c8
 2020-12-04 16:43:55 -05:00
Simon Marchi
1152d984bb gdb: rename displaced_step_closure to displaced_step_copy_insn_closure 
Since we're going to introduce other "displaced step" functions and
another kind of displaced step closure, make it clear that this is the
return type of the gdbarch_displaced_step_copy_insn function.

gdb/ChangeLog:

	* infrun.h (get_displaced_step_closure_by_addr): Rename to...
	(get_displaced_step_copy_insn_closure_by_addr): ... this.
	Update all users.
	(displaced_step_closure): Rename to...
	(displaced_step_copy_insn_closure): ... this.  Update all users.
	(displaced_step_closure_up): Rename to...
	(displaced_step_copy_insn_closure_up). ... this.  Update all
	users.
	(buf_displaced_step_closure): Rename to...
	(buf_displaced_step_copy_insn_closure): ... this.  Update all
	users.
	* infrun.c (get_displaced_step_closure_by_addr): Rename to...
	(get_displaced_step_copy_insn_closure_by_addr): ... this.
	Update all users.
	* aarch64-tdep.c (aarch64_displaced_step_closure): Rename to...
	(aarch64_displaced_step_copy_insn_closure): ... this.  Update
	all users.
	* amd64-tdep.c (amd64_displaced_step_closure): Rename to...
	(amd64_displaced_step_copy_insn_closure): ... this.  Update all
	users.
	* arm-tdep.h (arm_displaced_step_closure): Rename to...
	(arm_displaced_step_copy_insn_closure): ... this.  Update all
	users.
	* i386-tdep.h (i386_displaced_step_closure): Rename to...
	(i386_displaced_step_copy_insn_closure): ... this.  Update all
	users.
	* rs6000-tdep.c (ppc_displaced_step_closure): Rename to...
	(ppc_displaced_step_copy_insn_closure): ... this.  Update all
	users.
	* s390-tdep.c (s390_displaced_step_closure): Rename to...
	(s390_displaced_step_copy_insn_closure): ... this.  Update all
	users.
	* gdbarch.h: Re-generate.
	* gdbarch.c: Re-generate.

Change-Id: I11f56dbcd4c3532fb195a08ba93bccf1d12a03c8
 2020-12-04 16:43:53 -05:00
Simon Marchi
2c5b1849a6 gdb: fix comment in arm-tdep.c 
gdb/ChangeLog:

	* arm-tdep.c (class arm_instruction_reader) <read>: Fix comment.

Change-Id: I8f5355b314e8db643b645a6281042f514b46a908
 2020-11-14 11:18:59 -05:00
Simon Marchi
9ecab40c77 gdb/arm: avoid undefined behavior shift when decoding immediate value 
When loading the code file provided in PR 26828 and GDB is build with
UBSan, we get:

    Core was generated by `./Foo'.
    Program terminated with signal SIGABRT, Aborted.
    #0  0xb6c3809c in pthread_cond_wait () from /home/simark/build/binutils-gdb/gdb/repo/lib/libpthread.so.0
    [Current thread is 1 (LWP 29367)]
    (gdb) bt
    /home/simark/src/binutils-gdb/gdb/arm-tdep.c:1551:30: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'

The sequence of instructions at pthread_cond_wait, in the
libpthread.so.0 library, contains this instruction with an immediate
constant with a "rotate amount" of 0:

    e24dd044        sub     sp, sp, #68     ; 0x44

Since arm_analyze_prologue shifts by "32 - rotate amount", it does a 32
bit shift of a 32 bit type, which is caught by UBSan.

Fix it by factoring out the decoding of immediates in a new function,
arm_expand_immediate.

I added a selftest for arm_analyze_prologue that replicates the
instruction sequence.  Without the fix, it crashes GDB if it is build
with --enable-ubsan.

I initially wanted to re-use the abstract_memory_reader class already in
arm-tdep.c, used to make arm_process_record testable.  However,
arm_process_record and arm_analyze_prologue don't use the same kind of
memory reading functions.  arm_process_record uses a function that
returns an error status on failure while arm_analyze_prologue uses one
that throws an exception.  Since i didn't want to introduce any other
behavior change, I decided to just introduce a separate interface
(arm_instruction_reader).  It is derived from
abstract_instruction_reader in aarch64-tdep.c.

gdb/ChangeLog:

	PR gdb/26835
	* arm-tdep.c (class arm_instruction_reader): New.
	(target_arm_instruction_reader): New.
	(arm_analyze_prologue): Add instruction reader parameter and use
	it.  Use arm_expand_immediate.
	(class target_arm_instruction_reader): Adjust.
	(arm_skip_prologue): Adjust.
	(arm_expand_immediate): New.
	(arm_scan_prologue): Adjust.
	(arm_analyze_prologue_test): New.
	(class test_arm_instruction_reader): New.

Change-Id: Ieb1c1799bd66f8c7421384f44f5c2777b578ff8d
 2020-11-13 11:58:37 -05:00
Simon Marchi
dda83cd783 gdb, gdbserver, gdbsupport: fix leading space vs tabs issues 
Many spots incorrectly use only spaces for indentation (for example,
there are a lot of spots in ada-lang.c).  I've always found it awkward
when I needed to edit one of these spots: do I keep the original wrong
indentation, or do I fix it?  What if the lines around it are also
wrong, do I fix them too?  I probably don't want to fix them in the same
patch, to avoid adding noise to my patch.

So I propose to fix as much as possible once and for all (hopefully).

One typical counter argument for this is that it makes code archeology
more difficult, because git-blame will show this commit as the last
change for these lines.  My counter counter argument is: when
git-blaming, you often need to do "blame the file at the parent commit"
anyway, to go past some other refactor that touched the line you are
interested in, but is not the change you are looking for.  So you
already need a somewhat efficient way to do this.

Using some interactive tool, rather than plain git-blame, makes this
trivial.  For example, I use "tig blame <file>", where going back past
the commit that changed the currently selected line is one keystroke.
It looks like Magit in Emacs does it too (though I've never used it).
Web viewers of Github and Gitlab do it too.  My point is that it won't
really make archeology more difficult.

The other typical counter argument is that it will cause conflicts with
existing patches.  That's true... but it's a one time cost, and those
are not conflicts that are difficult to resolve.  I have also tried "git
rebase --ignore-whitespace", it seems to work well.  Although that will
re-introduce the faulty indentation, so one needs to take care of fixing
the indentation in the patch after that (which is easy).

gdb/ChangeLog:

	* aarch64-linux-tdep.c: Fix indentation.
	* aarch64-ravenscar-thread.c: Fix indentation.
	* aarch64-tdep.c: Fix indentation.
	* aarch64-tdep.h: Fix indentation.
	* ada-lang.c: Fix indentation.
	* ada-lang.h: Fix indentation.
	* ada-tasks.c: Fix indentation.
	* ada-typeprint.c: Fix indentation.
	* ada-valprint.c: Fix indentation.
	* ada-varobj.c: Fix indentation.
	* addrmap.c: Fix indentation.
	* addrmap.h: Fix indentation.
	* agent.c: Fix indentation.
	* aix-thread.c: Fix indentation.
	* alpha-bsd-nat.c: Fix indentation.
	* alpha-linux-tdep.c: Fix indentation.
	* alpha-mdebug-tdep.c: Fix indentation.
	* alpha-nbsd-tdep.c: Fix indentation.
	* alpha-obsd-tdep.c: Fix indentation.
	* alpha-tdep.c: Fix indentation.
	* amd64-bsd-nat.c: Fix indentation.
	* amd64-darwin-tdep.c: Fix indentation.
	* amd64-linux-nat.c: Fix indentation.
	* amd64-linux-tdep.c: Fix indentation.
	* amd64-nat.c: Fix indentation.
	* amd64-obsd-tdep.c: Fix indentation.
	* amd64-tdep.c: Fix indentation.
	* amd64-windows-tdep.c: Fix indentation.
	* annotate.c: Fix indentation.
	* arc-tdep.c: Fix indentation.
	* arch-utils.c: Fix indentation.
	* arch/arm-get-next-pcs.c: Fix indentation.
	* arch/arm.c: Fix indentation.
	* arm-linux-nat.c: Fix indentation.
	* arm-linux-tdep.c: Fix indentation.
	* arm-nbsd-tdep.c: Fix indentation.
	* arm-pikeos-tdep.c: Fix indentation.
	* arm-tdep.c: Fix indentation.
	* arm-tdep.h: Fix indentation.
	* arm-wince-tdep.c: Fix indentation.
	* auto-load.c: Fix indentation.
	* auxv.c: Fix indentation.
	* avr-tdep.c: Fix indentation.
	* ax-gdb.c: Fix indentation.
	* ax-general.c: Fix indentation.
	* bfin-linux-tdep.c: Fix indentation.
	* block.c: Fix indentation.
	* block.h: Fix indentation.
	* blockframe.c: Fix indentation.
	* bpf-tdep.c: Fix indentation.
	* break-catch-sig.c: Fix indentation.
	* break-catch-syscall.c: Fix indentation.
	* break-catch-throw.c: Fix indentation.
	* breakpoint.c: Fix indentation.
	* breakpoint.h: Fix indentation.
	* bsd-uthread.c: Fix indentation.
	* btrace.c: Fix indentation.
	* build-id.c: Fix indentation.
	* buildsym-legacy.h: Fix indentation.
	* buildsym.c: Fix indentation.
	* c-typeprint.c: Fix indentation.
	* c-valprint.c: Fix indentation.
	* c-varobj.c: Fix indentation.
	* charset.c: Fix indentation.
	* cli/cli-cmds.c: Fix indentation.
	* cli/cli-decode.c: Fix indentation.
	* cli/cli-decode.h: Fix indentation.
	* cli/cli-script.c: Fix indentation.
	* cli/cli-setshow.c: Fix indentation.
	* coff-pe-read.c: Fix indentation.
	* coffread.c: Fix indentation.
	* compile/compile-cplus-types.c: Fix indentation.
	* compile/compile-object-load.c: Fix indentation.
	* compile/compile-object-run.c: Fix indentation.
	* completer.c: Fix indentation.
	* corefile.c: Fix indentation.
	* corelow.c: Fix indentation.
	* cp-abi.h: Fix indentation.
	* cp-namespace.c: Fix indentation.
	* cp-support.c: Fix indentation.
	* cp-valprint.c: Fix indentation.
	* cris-linux-tdep.c: Fix indentation.
	* cris-tdep.c: Fix indentation.
	* darwin-nat-info.c: Fix indentation.
	* darwin-nat.c: Fix indentation.
	* darwin-nat.h: Fix indentation.
	* dbxread.c: Fix indentation.
	* dcache.c: Fix indentation.
	* disasm.c: Fix indentation.
	* dtrace-probe.c: Fix indentation.
	* dwarf2/abbrev.c: Fix indentation.
	* dwarf2/attribute.c: Fix indentation.
	* dwarf2/expr.c: Fix indentation.
	* dwarf2/frame.c: Fix indentation.
	* dwarf2/index-cache.c: Fix indentation.
	* dwarf2/index-write.c: Fix indentation.
	* dwarf2/line-header.c: Fix indentation.
	* dwarf2/loc.c: Fix indentation.
	* dwarf2/macro.c: Fix indentation.
	* dwarf2/read.c: Fix indentation.
	* dwarf2/read.h: Fix indentation.
	* elfread.c: Fix indentation.
	* eval.c: Fix indentation.
	* event-top.c: Fix indentation.
	* exec.c: Fix indentation.
	* exec.h: Fix indentation.
	* expprint.c: Fix indentation.
	* f-lang.c: Fix indentation.
	* f-typeprint.c: Fix indentation.
	* f-valprint.c: Fix indentation.
	* fbsd-nat.c: Fix indentation.
	* fbsd-tdep.c: Fix indentation.
	* findvar.c: Fix indentation.
	* fork-child.c: Fix indentation.
	* frame-unwind.c: Fix indentation.
	* frame-unwind.h: Fix indentation.
	* frame.c: Fix indentation.
	* frv-linux-tdep.c: Fix indentation.
	* frv-tdep.c: Fix indentation.
	* frv-tdep.h: Fix indentation.
	* ft32-tdep.c: Fix indentation.
	* gcore.c: Fix indentation.
	* gdb_bfd.c: Fix indentation.
	* gdbarch.sh: Fix indentation.
	* gdbarch.c: Re-generate
	* gdbarch.h: Re-generate.
	* gdbcore.h: Fix indentation.
	* gdbthread.h: Fix indentation.
	* gdbtypes.c: Fix indentation.
	* gdbtypes.h: Fix indentation.
	* glibc-tdep.c: Fix indentation.
	* gnu-nat.c: Fix indentation.
	* gnu-nat.h: Fix indentation.
	* gnu-v2-abi.c: Fix indentation.
	* gnu-v3-abi.c: Fix indentation.
	* go32-nat.c: Fix indentation.
	* guile/guile-internal.h: Fix indentation.
	* guile/scm-cmd.c: Fix indentation.
	* guile/scm-frame.c: Fix indentation.
	* guile/scm-iterator.c: Fix indentation.
	* guile/scm-math.c: Fix indentation.
	* guile/scm-ports.c: Fix indentation.
	* guile/scm-pretty-print.c: Fix indentation.
	* guile/scm-value.c: Fix indentation.
	* h8300-tdep.c: Fix indentation.
	* hppa-linux-nat.c: Fix indentation.
	* hppa-linux-tdep.c: Fix indentation.
	* hppa-nbsd-nat.c: Fix indentation.
	* hppa-nbsd-tdep.c: Fix indentation.
	* hppa-obsd-nat.c: Fix indentation.
	* hppa-tdep.c: Fix indentation.
	* hppa-tdep.h: Fix indentation.
	* i386-bsd-nat.c: Fix indentation.
	* i386-darwin-nat.c: Fix indentation.
	* i386-darwin-tdep.c: Fix indentation.
	* i386-dicos-tdep.c: Fix indentation.
	* i386-gnu-nat.c: Fix indentation.
	* i386-linux-nat.c: Fix indentation.
	* i386-linux-tdep.c: Fix indentation.
	* i386-nto-tdep.c: Fix indentation.
	* i386-obsd-tdep.c: Fix indentation.
	* i386-sol2-nat.c: Fix indentation.
	* i386-tdep.c: Fix indentation.
	* i386-tdep.h: Fix indentation.
	* i386-windows-tdep.c: Fix indentation.
	* i387-tdep.c: Fix indentation.
	* i387-tdep.h: Fix indentation.
	* ia64-libunwind-tdep.c: Fix indentation.
	* ia64-libunwind-tdep.h: Fix indentation.
	* ia64-linux-nat.c: Fix indentation.
	* ia64-linux-tdep.c: Fix indentation.
	* ia64-tdep.c: Fix indentation.
	* ia64-tdep.h: Fix indentation.
	* ia64-vms-tdep.c: Fix indentation.
	* infcall.c: Fix indentation.
	* infcmd.c: Fix indentation.
	* inferior.c: Fix indentation.
	* infrun.c: Fix indentation.
	* iq2000-tdep.c: Fix indentation.
	* language.c: Fix indentation.
	* linespec.c: Fix indentation.
	* linux-fork.c: Fix indentation.
	* linux-nat.c: Fix indentation.
	* linux-tdep.c: Fix indentation.
	* linux-thread-db.c: Fix indentation.
	* lm32-tdep.c: Fix indentation.
	* m2-lang.c: Fix indentation.
	* m2-typeprint.c: Fix indentation.
	* m2-valprint.c: Fix indentation.
	* m32c-tdep.c: Fix indentation.
	* m32r-linux-tdep.c: Fix indentation.
	* m32r-tdep.c: Fix indentation.
	* m68hc11-tdep.c: Fix indentation.
	* m68k-bsd-nat.c: Fix indentation.
	* m68k-linux-nat.c: Fix indentation.
	* m68k-linux-tdep.c: Fix indentation.
	* m68k-tdep.c: Fix indentation.
	* machoread.c: Fix indentation.
	* macrocmd.c: Fix indentation.
	* macroexp.c: Fix indentation.
	* macroscope.c: Fix indentation.
	* macrotab.c: Fix indentation.
	* macrotab.h: Fix indentation.
	* main.c: Fix indentation.
	* mdebugread.c: Fix indentation.
	* mep-tdep.c: Fix indentation.
	* mi/mi-cmd-catch.c: Fix indentation.
	* mi/mi-cmd-disas.c: Fix indentation.
	* mi/mi-cmd-env.c: Fix indentation.
	* mi/mi-cmd-stack.c: Fix indentation.
	* mi/mi-cmd-var.c: Fix indentation.
	* mi/mi-cmds.c: Fix indentation.
	* mi/mi-main.c: Fix indentation.
	* mi/mi-parse.c: Fix indentation.
	* microblaze-tdep.c: Fix indentation.
	* minidebug.c: Fix indentation.
	* minsyms.c: Fix indentation.
	* mips-linux-nat.c: Fix indentation.
	* mips-linux-tdep.c: Fix indentation.
	* mips-nbsd-tdep.c: Fix indentation.
	* mips-tdep.c: Fix indentation.
	* mn10300-linux-tdep.c: Fix indentation.
	* mn10300-tdep.c: Fix indentation.
	* moxie-tdep.c: Fix indentation.
	* msp430-tdep.c: Fix indentation.
	* namespace.h: Fix indentation.
	* nat/fork-inferior.c: Fix indentation.
	* nat/gdb_ptrace.h: Fix indentation.
	* nat/linux-namespaces.c: Fix indentation.
	* nat/linux-osdata.c: Fix indentation.
	* nat/netbsd-nat.c: Fix indentation.
	* nat/x86-dregs.c: Fix indentation.
	* nbsd-nat.c: Fix indentation.
	* nbsd-tdep.c: Fix indentation.
	* nios2-linux-tdep.c: Fix indentation.
	* nios2-tdep.c: Fix indentation.
	* nto-procfs.c: Fix indentation.
	* nto-tdep.c: Fix indentation.
	* objfiles.c: Fix indentation.
	* objfiles.h: Fix indentation.
	* opencl-lang.c: Fix indentation.
	* or1k-tdep.c: Fix indentation.
	* osabi.c: Fix indentation.
	* osabi.h: Fix indentation.
	* osdata.c: Fix indentation.
	* p-lang.c: Fix indentation.
	* p-typeprint.c: Fix indentation.
	* p-valprint.c: Fix indentation.
	* parse.c: Fix indentation.
	* ppc-linux-nat.c: Fix indentation.
	* ppc-linux-tdep.c: Fix indentation.
	* ppc-nbsd-nat.c: Fix indentation.
	* ppc-nbsd-tdep.c: Fix indentation.
	* ppc-obsd-nat.c: Fix indentation.
	* ppc-ravenscar-thread.c: Fix indentation.
	* ppc-sysv-tdep.c: Fix indentation.
	* ppc64-tdep.c: Fix indentation.
	* printcmd.c: Fix indentation.
	* proc-api.c: Fix indentation.
	* producer.c: Fix indentation.
	* producer.h: Fix indentation.
	* prologue-value.c: Fix indentation.
	* prologue-value.h: Fix indentation.
	* psymtab.c: Fix indentation.
	* python/py-arch.c: Fix indentation.
	* python/py-bpevent.c: Fix indentation.
	* python/py-event.c: Fix indentation.
	* python/py-event.h: Fix indentation.
	* python/py-finishbreakpoint.c: Fix indentation.
	* python/py-frame.c: Fix indentation.
	* python/py-framefilter.c: Fix indentation.
	* python/py-inferior.c: Fix indentation.
	* python/py-infthread.c: Fix indentation.
	* python/py-objfile.c: Fix indentation.
	* python/py-prettyprint.c: Fix indentation.
	* python/py-registers.c: Fix indentation.
	* python/py-signalevent.c: Fix indentation.
	* python/py-stopevent.c: Fix indentation.
	* python/py-stopevent.h: Fix indentation.
	* python/py-threadevent.c: Fix indentation.
	* python/py-tui.c: Fix indentation.
	* python/py-unwind.c: Fix indentation.
	* python/py-value.c: Fix indentation.
	* python/py-xmethods.c: Fix indentation.
	* python/python-internal.h: Fix indentation.
	* python/python.c: Fix indentation.
	* ravenscar-thread.c: Fix indentation.
	* record-btrace.c: Fix indentation.
	* record-full.c: Fix indentation.
	* record.c: Fix indentation.
	* reggroups.c: Fix indentation.
	* regset.h: Fix indentation.
	* remote-fileio.c: Fix indentation.
	* remote.c: Fix indentation.
	* reverse.c: Fix indentation.
	* riscv-linux-tdep.c: Fix indentation.
	* riscv-ravenscar-thread.c: Fix indentation.
	* riscv-tdep.c: Fix indentation.
	* rl78-tdep.c: Fix indentation.
	* rs6000-aix-tdep.c: Fix indentation.
	* rs6000-lynx178-tdep.c: Fix indentation.
	* rs6000-nat.c: Fix indentation.
	* rs6000-tdep.c: Fix indentation.
	* rust-lang.c: Fix indentation.
	* rx-tdep.c: Fix indentation.
	* s12z-tdep.c: Fix indentation.
	* s390-linux-tdep.c: Fix indentation.
	* score-tdep.c: Fix indentation.
	* ser-base.c: Fix indentation.
	* ser-mingw.c: Fix indentation.
	* ser-uds.c: Fix indentation.
	* ser-unix.c: Fix indentation.
	* serial.c: Fix indentation.
	* sh-linux-tdep.c: Fix indentation.
	* sh-nbsd-tdep.c: Fix indentation.
	* sh-tdep.c: Fix indentation.
	* skip.c: Fix indentation.
	* sol-thread.c: Fix indentation.
	* solib-aix.c: Fix indentation.
	* solib-darwin.c: Fix indentation.
	* solib-frv.c: Fix indentation.
	* solib-svr4.c: Fix indentation.
	* solib.c: Fix indentation.
	* source.c: Fix indentation.
	* sparc-linux-tdep.c: Fix indentation.
	* sparc-nbsd-tdep.c: Fix indentation.
	* sparc-obsd-tdep.c: Fix indentation.
	* sparc-ravenscar-thread.c: Fix indentation.
	* sparc-tdep.c: Fix indentation.
	* sparc64-linux-tdep.c: Fix indentation.
	* sparc64-nbsd-tdep.c: Fix indentation.
	* sparc64-obsd-tdep.c: Fix indentation.
	* sparc64-tdep.c: Fix indentation.
	* stabsread.c: Fix indentation.
	* stack.c: Fix indentation.
	* stap-probe.c: Fix indentation.
	* stubs/ia64vms-stub.c: Fix indentation.
	* stubs/m32r-stub.c: Fix indentation.
	* stubs/m68k-stub.c: Fix indentation.
	* stubs/sh-stub.c: Fix indentation.
	* stubs/sparc-stub.c: Fix indentation.
	* symfile-mem.c: Fix indentation.
	* symfile.c: Fix indentation.
	* symfile.h: Fix indentation.
	* symmisc.c: Fix indentation.
	* symtab.c: Fix indentation.
	* symtab.h: Fix indentation.
	* target-float.c: Fix indentation.
	* target.c: Fix indentation.
	* target.h: Fix indentation.
	* tic6x-tdep.c: Fix indentation.
	* tilegx-linux-tdep.c: Fix indentation.
	* tilegx-tdep.c: Fix indentation.
	* top.c: Fix indentation.
	* tracefile-tfile.c: Fix indentation.
	* tracepoint.c: Fix indentation.
	* tui/tui-disasm.c: Fix indentation.
	* tui/tui-io.c: Fix indentation.
	* tui/tui-regs.c: Fix indentation.
	* tui/tui-stack.c: Fix indentation.
	* tui/tui-win.c: Fix indentation.
	* tui/tui-winsource.c: Fix indentation.
	* tui/tui.c: Fix indentation.
	* typeprint.c: Fix indentation.
	* ui-out.h: Fix indentation.
	* unittests/copy_bitwise-selftests.c: Fix indentation.
	* unittests/memory-map-selftests.c: Fix indentation.
	* utils.c: Fix indentation.
	* v850-tdep.c: Fix indentation.
	* valarith.c: Fix indentation.
	* valops.c: Fix indentation.
	* valprint.c: Fix indentation.
	* valprint.h: Fix indentation.
	* value.c: Fix indentation.
	* value.h: Fix indentation.
	* varobj.c: Fix indentation.
	* vax-tdep.c: Fix indentation.
	* windows-nat.c: Fix indentation.
	* windows-tdep.c: Fix indentation.
	* xcoffread.c: Fix indentation.
	* xml-syscall.c: Fix indentation.
	* xml-tdesc.c: Fix indentation.
	* xstormy16-tdep.c: Fix indentation.
	* xtensa-config.c: Fix indentation.
	* xtensa-linux-nat.c: Fix indentation.
	* xtensa-linux-tdep.c: Fix indentation.
	* xtensa-tdep.c: Fix indentation.

gdbserver/ChangeLog:

	* ax.cc: Fix indentation.
	* dll.cc: Fix indentation.
	* inferiors.h: Fix indentation.
	* linux-low.cc: Fix indentation.
	* linux-nios2-low.cc: Fix indentation.
	* linux-ppc-ipa.cc: Fix indentation.
	* linux-ppc-low.cc: Fix indentation.
	* linux-x86-low.cc: Fix indentation.
	* linux-xtensa-low.cc: Fix indentation.
	* regcache.cc: Fix indentation.
	* server.cc: Fix indentation.
	* tracepoint.cc: Fix indentation.

gdbsupport/ChangeLog:

	* common-exceptions.h: Fix indentation.
	* event-loop.cc: Fix indentation.
	* fileio.cc: Fix indentation.
	* filestuff.cc: Fix indentation.
	* gdb-dlfcn.cc: Fix indentation.
	* gdb_string_view.h: Fix indentation.
	* job-control.cc: Fix indentation.
	* signals.cc: Fix indentation.

Change-Id: I4bad7ae6be0fbe14168b8ebafb98ffe14964a695
 2020-11-02 10:28:45 -05:00
Simon Marchi
136821d9f6 gdb: introduce displaced_debug_printf 
Move all debug prints of the "displaced" category to use a new
displaced_debug_printf macro, like what was done for infrun and others
earlier.

The debug output for one displaced step one amd64 looks like:

    [displaced] displaced_step_prepare_throw: stepping process 3367044 now
    [displaced] displaced_step_prepare_throw: saved 0x555555555042: 1e fa 31 ed 49 89 d1 5e 48 89 e2 48 83 e4 f0 50
    [displaced] amd64_displaced_step_copy_insn: copy 0x555555555131->0x555555555042: b8 00 00 00 00 5d c3 0f 1f 84 00 00 00 00 00 f3
    [displaced] displaced_step_prepare_throw: displaced pc to 0x555555555042
    [displaced] resume_1: run 0x555555555042: b8 00 00 00
    [displaced] displaced_step_restore: restored process 3367044 0x555555555042
    [displaced] amd64_displaced_step_fixup: fixup (0x555555555131, 0x555555555042), insn = 0xb8 0x00 ...
    [displaced] amd64_displaced_step_fixup: relocated %rip from 0x555555555047 to 0x555555555136

On test case needed to be updated because it relied on the specific
formatting of the message.

gdb/ChangeLog:

	* infrun.h (displaced_debug_printf): New macro.  Replace
	displaced debug prints throughout to use it.
	(displaced_debug_printf_1): New declaration.
	(displaced_step_dump_bytes): Return string, remove ui_file
	parameter, update all callers.
	* infrun.c (displaced_debug_printf_1): New function.
	(displaced_step_dump_bytes): Return string, remove ui_file
	parameter

gdb/testsuite/ChangeLog:

	* gdb.arch/amd64-disp-step-avx.exp: Update displaced step debug
	expected output.

Change-Id: Ie78837f56431f6f98378790ba1e6051337bf6533
 2020-10-30 15:10:58 -04:00
Tom Tromey
7e10abd146 Remove the exec_bfd macro 
This removes the exec_bfd macro, in favor of new accessors on
program_space.  In one spot the accessor can't be used; but this is
still a big improvement over the macro, IMO.

gdb/ChangeLog
2020-10-29  Tom Tromey  <tom@tromey.com>

	* windows-tdep.c (windows_solib_create_inferior_hook): Update.
	* symfile.c (reread_symbols): Update.
	* symfile-mem.c (add_symbol_file_from_memory_command)
	(add_vsyscall_page): Update.
	* source-cache.c (source_cache::get_plain_source_lines): Update.
	* solib-svr4.c (find_program_interpreter, elf_locate_base)
	(svr4_current_sos_direct, svr4_exec_displacement)
	(svr4_relocate_main_executable): Update.
	(svr4_iterate_over_objfiles_in_search_order): Update.
	* solib-frv.c (enable_break2, enable_break): Update.
	* solib-dsbt.c (lm_base, enable_break): Update.
	* solib-darwin.c (find_program_interpreter)
	(darwin_solib_create_inferior_hook): Update.
	* sol-thread.c (rw_common, ps_pdmodel): Update.
	* rs6000-nat.c (rs6000_nat_target::create_inferior): Update.
	* remote.c (compare_sections_command)
	(remote_target::trace_set_readonly_regions): Update.
	* remote-sim.c (get_sim_inferior_data)
	(gdbsim_target::create_inferior, gdbsim_target::create_inferior): Update.
	(gdbsim_target_open, gdbsim_target::files_info): Update.
	* exec.h (exec_bfd): Remove macro.
	* progspace.c (initialize_progspace): Update.
	* proc-service.c (ps_addr_to_core_addr, core_addr_to_ps_addr):
	Update.
	* nto-procfs.c (nto_procfs_target::post_attach)
	(nto_procfs_target::create_inferior): Update.
	* maint.c (maintenance_info_sections): Update.
	* linux-thread-db.c (thread_db_target::get_thread_local_address):
	Update.
	* infcmd.c (post_create_inferior): Update.
	* gcore.c (default_gcore_arch, default_gcore_target): Update.
	(objfile_find_memory_regions): Update.
	* exec.c (validate_exec_file, exec_file_attach)
	(exec_read_partial_read_only, print_section_info): Update.
	* corelow.c (core_target_open): Update.
	* corefile.c (reopen_exec_file, validate_files): Update.
	* arm-tdep.c (gdb_print_insn_arm): Update.
	* arch-utils.c (gdbarch_update_p, default_print_insn): Update.
	* progspace.h (struct program_space) <exec_bfd, set_exec_bfd>: New
	methods.
 2020-10-29 15:04:36 -06:00
Tom Tromey
9dccd06e8a Remove target_has_registers macro 
This removes the target_has_registers object-like macro, replacing it
with the underlying function.

gdb/ChangeLog
2020-09-28  Tom Tromey  <tom@tromey.com>

	* tui/tui-regs.c (tui_get_register)
	(tui_data_window::show_registers): Update.
	* thread.c (scoped_restore_current_thread::restore)
	(scoped_restore_current_thread::scoped_restore_current_thread):
	Update.
	* regcache-dump.c (regcache_print): Update.
	* python/py-finishbreakpoint.c (bpfinishpy_detect_out_scope_cb):
	Update.
	* mi/mi-main.c (mi_cmd_data_write_register_values): Update.
	* mep-tdep.c (current_me_module, current_options): Update.
	* linux-thread-db.c (thread_db_load): Update.
	* infcmd.c (registers_info, info_vector_command)
	(info_float_command): Update.
	* ia64-tdep.c (ia64_frame_prev_register)
	(ia64_sigtramp_frame_prev_register): Update.
	* ia64-libunwind-tdep.c (libunwind_frame_prev_register): Update.
	* gcore.c (derive_stack_segment): Update.
	* frame.c (get_current_frame, has_stack_frames): Update.
	* findvar.c (language_defn::read_var_value): Update.
	* arm-tdep.c (arm_pc_is_thumb): Update.
	* target.c (target_has_registers): Rename from
	target_has_registers_1.
	* target.h (target_has_registers): Remove macro.
	(target_has_registers): Rename from target_has_registers_1.
 2020-09-28 19:52:21 -06:00
Tom Tromey
b35c1d1cf4 Use gdb_bfd_sections in ELF osabi tag sniffing 
This changes some ELF osabi tag-sniffing functions to avoid
bfd_map_over_sections, in favor of iteration.  I could only readily
test the generic one.

gdb/ChangeLog
2020-09-19  Tom Tromey  <tom@tromey.com>

	* osabi.h (generic_elf_osabi_sniff_abi_tag_sections): Update.
	* osabi.c (generic_elf_osabi_sniff_abi_tag_sections): Change
	parameters.
	(generic_elf_osabi_sniffer): Use foreach.
	* mips-sde-tdep.c (mips_sde_elf_osabi_sniffer): Use foreach.
	* arm-tdep.c (arm_elf_osabi_sniffer): Use foreach.
 2020-09-19 11:54:52 -06:00
Tom Tromey
c1e1314d00 Change management of tdesc_arch_data 
While working on something else, I noticed that tdesc_data_cleanup
took a void* parameter.  Looking more into this, I found that
tdesc_use_registers expected a transfer of ownership.

I think it's better to express this sort of thing via the type system,
when possible.  This patch changes tdesc_data_alloc to return a unique
pointer, changes tdesc_use_registers to accept an rvalue reference,
and then adapts all the users.

Note that a deleter structure is introduced to avoid having to move
tdesc_arch_data to the header file.

2020-09-17  Tom Tromey  <tromey@adacore.com>

	* tic6x-tdep.c (tic6x_gdbarch_init): Update.
	* target-descriptions.h (struct tdesc_arch_data_deleter): New.
	(tdesc_arch_data_up): New typedef.
	(tdesc_use_registers, tdesc_data_alloc): Update.
	(tdesc_data_cleanup): Don't declare.
	* target-descriptions.c (tdesc_data_alloc): Return a
	tdesc_arch_data_up.
	(tdesc_arch_data_deleter::operator()): Rename from
	tdesc_data_cleanup.  Change argument type.
	(tdesc_use_registers): Change early_data to an rvalue reference.
	(tdesc_use_registers): Don't use delete.
	* sparc-tdep.c (sparc32_gdbarch_init): Update.
	* s390-tdep.c (s390_gdbarch_init): Update.
	* rx-tdep.c (rx_gdbarch_init): Update.
	* rs6000-tdep.c (rs6000_gdbarch_init): Update.
	* riscv-tdep.c (riscv_gdbarch_init): Update.
	* or1k-tdep.c (or1k_gdbarch_init): Update.
	* nios2-tdep.c (nios2_gdbarch_init): Update.
	* nds32-tdep.c (nds32_gdbarch_init): Update.
	* mips-tdep.c (mips_gdbarch_init): Update.
	* microblaze-tdep.c (microblaze_gdbarch_init): Update.
	* m68k-tdep.c (m68k_gdbarch_init): Update.
	* i386-tdep.c (i386_gdbarch_init): Update.
	* arm-tdep.c (arm_gdbarch_init): Update.
	* arc-tdep.c (arc_tdesc_init): Update.
	(arc_gdbarch_init): Update.
	* aarch64-tdep.c (aarch64_gdbarch_init): Update.
 2020-09-17 14:28:06 -06:00
Simon Marchi
bd63c87008 gdb: remove TYPE_VECTOR 
gdb/ChangeLog:

	* gdbtypes.h (TYPE_VECTOR): Remove, replace all
	uses with type::is_vector.

Change-Id: I1ac28755af44b1585c190553f9961288c8fb9137
 2020-09-14 11:08:03 -04:00
Simon Marchi
2062087b35 gdb: add type::is_vector / type::set_is_vector 
Add the `is_vector` and `set_is_vector` methods on `struct type`, in
order to remove the `TYPE_VECTOR` macro.  In this patch, the macro is
changed to use the getter, so all the call sites of the macro that are
used as a setter are changed to use the setter method directly.  The
next patch will remove the macro completely.

gdb/ChangeLog:

	* gdbtypes.h (struct type) <is_vector, set_is_vector>: New methods.
	(TYPE_VECTOR): Use type::is_vector, change all write call sites to
	use type::set_is_vector.

Change-Id: I415e8d169f058662e0750329bfa4017bea3ca0cb
 2020-09-14 11:08:02 -04:00
Simon Marchi
a409645d13 gdb: remove TYPE_VARARGS 
gdb/ChangeLog:

	* gdbtypes.h (TYPE_VARARGS): Remove, replace all
	uses with type::has_varargs.

Change-Id: Ieea4a64b4bfa4b8be643e68cb403081881133740
 2020-09-14 11:08:02 -04:00
Fredrik Hederstierna
55ea94da36 Fix exception stack unwinding for ARM Cortex-M 
For Cortex-M targets using floating-point, eg the Cortex-M4F, its not possible
to get any call-stack backtrace if setting a breakpoint in ISR.

The exception stack unwinder for Cortex-M does not consider if floating-point
registers was stacked or not, further the Cortex-M has two stack pointers: MSP
(Main Stack Pointer) and PSP (Process Stack Pointer).
This is not handled when GDB tries to backtrace in the exception stack
unwinder.

This patch fixes this, and gives a correct call-stack backtrace from
breakpoints set in a handler or ISR.

gdb/ChangeLog:

        * arm-tdep.c (arm_m_exception_cache): Try use correct stack
        pointer and stack frame offset when unwinding.
 2020-09-14 15:26:12 +01:00
Alok Kumar Sharma
c2fd7faea8 Fix for incorrect breakpoint set in case of flang compiled binary 
Currently, GDB is not able to set a breakpoint at subprogram post
prologue for flang generated binaries. This is due to clang having
two line notes one before and another after the prologue.
  Now the end of prologue is determined using symbol table, which was
the way for clang generated binaries already. Since clang and flang
both share same back-end it is true for flang as well.

gdb/ChangeLog

      * amd64-tdep.c (amd64_skip_prologue): Using symbol table
      to find the end of prologue for flang compiled binaries.
      * arm-tdep.c (arm_skip_prologue): Likewise.
      * i386-tdep.c (i386_skip_prologue): Likewise.
      * producer.c (producer_is_llvm): New function.
      (producer_parsing_tests): Added new tests for clang/flang.
      * producer.h (producer_is_llvm): New declaration.

gdb/testsuite/ChangeLog

      * gdb.fortran/vla-type.exp: Skip commands not required for
      the Flang compiled binaries after prologue fix.
 2020-08-20 10:38:59 +05:30
Simon Marchi
940da03e32 gdb: remove TYPE_FIELD_TYPE macro 
Remove the `TYPE_FIELD_TYPE` macro, changing all the call sites to use
`type::field` and `field::type` directly.

gdb/ChangeLog:

	* gdbtypes.h (TYPE_FIELD_TYPE): Remove.  Change all call sites
	to use type::field and field::type instead.

Change-Id: Ifda6226a25c811cfd334a756a9fbc5c0afdddff3
 2020-06-08 15:26:31 -04:00
Luis Machado
f8c6d1528c Fix PR 26000, logical bitwise error / prologue analyzer 
This fixes an instruction mask typo. We should be matching only
ldrd (immediate) and not any other of its variants. As is, it never matches
anything.

With the patch, the instruction mask also allows matching of ldrd (literal),
but the check for SP discards this particular instruction pattern, as it has
a hardcoded PC register.

gdb/ChangeLog:

2020-05-27  Luis Machado  <luis.machado@linaro.org>

	PR tdep/26000
	* arm-tdep.c (thumb_analyze_prologue): Fix instruction matching
	for ldrd (immediate).
 2020-05-27 09:41:53 -03:00
Simon Marchi
ceacbf6edf gdb: remove TYPE_FIELD macro 
Replace all uses of it by type::field.

Note that since type::field returns a reference to the field, some spots
are used to assign the whole field structure.  See ctfread.c, function
attach_fields_to_type, for example.  This is the same as was happening
with the macro, so I don't think it's a problem, but if anybody sees a
really nicer way to do this, now could be a good time to implement it.

gdb/ChangeLog:

	* gdbtypes.h (TYPE_FIELD): Remove.  Replace all uses with
	type::field.
 2020-05-23 17:39:54 -04:00
Simon Marchi
1f704f761b gdb: remove TYPE_NFIELDS macro 
Remove `TYPE_NFIELDS`, changing all the call sites to use
`type::num_fields` directly.  This is quite a big diff, but this was
mostly done using sed and coccinelle.  A few call sites were done by
hand.

gdb/ChangeLog:

	* gdbtypes.h (TYPE_NFIELDS): Remove.  Change all cal sites to use
	type::num_fields instead.

Change-Id: Ib73be4c36f9e770e0f729bac3b5257d7cb2f9591
 2020-05-22 16:55:15 -04:00
Simon Marchi
d0e39ea27c gdb: add type::name / type::set_name 
Add the `name` and `set_name` methods on `struct type`, in order to
remove the `TYPE_NAME` macro.  In this patch, the `TYPE_NAME` macro is
changed to use `type::name`, so all the call sites that are used to set
the type name are changed to use `type::set_name`.  The next patch will
remove `TYPE_NAME` completely.

gdb/ChangeLog:

	* gdbtypes.h (struct type) <name, set_name>: New methods.
	(TYPE_CODE): Use type::name.  Change all call sites used to set
	the name to use type::set_name instead.
 2020-05-16 12:36:05 -04:00
Simon Marchi
7813437494 gdb: remove TYPE_CODE macro 
Remove TYPE_CODE, changing all the call sites to use type::code
directly.  This is quite a big diff, but this was mostly done using sed
and coccinelle.  A few call sites were done by hand.

gdb/ChangeLog:

	* gdbtypes.h (TYPE_CODE): Remove.  Change all call sites to use
	type::code instead.
 2020-05-14 13:46:38 -04:00
Tom Tromey
0743fc83c0 Replace most calls to help_list and cmd_show_list 
Currently there are many prefix commands that do nothing but call
either help_list or cmd_show_list.  I happened to notice that one such
call, for "set print type", used the wrong command list parameter,
causing incorrect output.

Rather than fix this bug in isolation, I decided to eliminate this
possibility by adding two new ways to add prefix commands, which
simply route the call to help_list or cmd_show_list, as appropriate.
This makes it impossible for a mismatch to occur.

In some cases, a bit of output was removed; however, I don't think
this output in general was very useful.  It seemed redundant with
what's already printed by help_list.  A representative example is this
hunk, removed from ada-lang.c:

-  printf_unfiltered (_(\
-"\"set ada\" must be followed by the name of a setting.\n"));

This simplified the CLI style set/show commands quite a bit, and
allowed the deletion of a macro.

This also cleans up some unusual code in windows-tdep.c.

Tested on x86-64 Fedora 30.  Note that I have no way to build the
go32-nat.c change.

gdb/ChangeLog
2020-04-17  Tom Tromey  <tromey@adacore.com>

	* auto-load.c (show_auto_load_cmd): Remove.
	(auto_load_show_cmdlist_get): Use add_show_prefix_cmd.
	* arc-tdep.c (_initialize_arc_tdep): Use add_show_prefix_cmd.
	(maintenance_print_arc_command): Remove.
	* tui/tui-win.c (tui_command): Remove.
	(tui_get_cmd_list): Use add_basic_prefix_cmd.
	* tui/tui-layout.c (tui_layout_command): Remove.
	(_initialize_tui_layout): Use add_basic_prefix_cmd.
	* python/python.c (user_set_python, user_show_python): Remove.
	(_initialize_python): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* guile/guile.c (set_guile_command, show_guile_command): Remove.
	(install_gdb_commands): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(info_guile_command): Remove.
	* dwarf2/read.c (set_dwarf_cmd, show_dwarf_cmd): Remove.
	(_initialize_dwarf2_read): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* cli/cli-style.h (class cli_style_option) <add_setshow_commands>:
	Remove do_set and do_show parameters.
	* cli/cli-style.c (set_style, show_style): Remove.
	(_initialize_cli_style): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(cli_style_option::add_setshow_commands): Remove do_set and
	do_show parameters.
	(cli_style_option::add_setshow_commands): Use
	add_basic_prefix_cmd, add_show_prefix_cmd.
	(STYLE_ADD_SETSHOW_COMMANDS): Remove macro.
	(set_style_name): Remove.
	* cli/cli-dump.c (dump_command, append_command): Remove.
	(srec_dump_command, ihex_dump_command, verilog_dump_command)
	(tekhex_dump_command, binary_dump_command)
	(binary_append_command): Remove.
	(_initialize_cli_dump): Use add_basic_prefix_cmd.
	* windows-tdep.c (w32_prefix_command_valid): Remove global.
	(init_w32_command_list): Remove; move into ...
	(_initialize_windows_tdep): ... here.  Use add_basic_prefix_cmd.
	* valprint.c (set_print, show_print, set_print_raw)
	(show_print_raw): Remove.
	(_initialize_valprint): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* typeprint.c (set_print_type, show_print_type): Remove.
	(_initialize_typeprint): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* record.c (set_record_command, show_record_command): Remove.
	(_initialize_record): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* cli/cli-cmds.c (_initialize_cli_cmds): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(info_command, show_command, set_debug, show_debug): Remove.
	* top.h (set_history, show_history): Don't declare.
	* top.c (set_history, show_history): Remove.
	* target-descriptions.c (set_tdesc_cmd, show_tdesc_cmd)
	(unset_tdesc_cmd): Remove.
	(_initialize_target_descriptions): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* symtab.c (info_module_command): Remove.
	(_initialize_symtab): Use add_basic_prefix_cmd.
	* symfile.c (overlay_command): Remove.
	(_initialize_symfile): Use add_basic_prefix_cmd.
	* sparc64-tdep.c (info_adi_command): Remove.
	(_initialize_sparc64_adi_tdep): Use add_basic_prefix_cmd.
	* sh-tdep.c (show_sh_command, set_sh_command): Remove.
	(_initialize_sh_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* serial.c (serial_set_cmd, serial_show_cmd): Remove.
	(_initialize_serial): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* ser-tcp.c (set_tcp_cmd, show_tcp_cmd): Remove.
	(_initialize_ser_tcp): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* rs6000-tdep.c (set_powerpc_command, show_powerpc_command)
	(_initialize_rs6000_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* riscv-tdep.c (show_riscv_command, set_riscv_command)
	(show_debug_riscv_command, set_debug_riscv_command): Remove.
	(_initialize_riscv_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* remote.c (remote_command, set_remote_cmd): Remove.
	(_initialize_remote): Use add_basic_prefix_cmd.
	* record-full.c (set_record_full_command)
	(show_record_full_command): Remove.
	(_initialize_record_full): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* record-btrace.c (cmd_set_record_btrace)
	(cmd_show_record_btrace, cmd_set_record_btrace_bts)
	(cmd_show_record_btrace_bts, cmd_set_record_btrace_pt)
	(cmd_show_record_btrace_pt): Remove.
	(_initialize_record_btrace): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* ravenscar-thread.c (set_ravenscar_command)
	(show_ravenscar_command): Remove.
	(_initialize_ravenscar): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* mips-tdep.c (show_mips_command, set_mips_command)
	(_initialize_mips_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* maint.c (maintenance_command, maintenance_info_command)
	(maintenance_check_command, maintenance_print_command)
	(maintenance_set_cmd, maintenance_show_cmd): Remove.
	(_initialize_maint_cmds): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(show_per_command_cmd): Remove.
	* maint-test-settings.c (maintenance_set_test_settings_cmd):
	Remove.
	(maintenance_show_test_settings_cmd): Remove.
	(_initialize_maint_test_settings): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* maint-test-options.c (maintenance_test_options_command):
	Remove.
	(_initialize_maint_test_options): Use add_basic_prefix_cmd.
	* macrocmd.c (macro_command): Remove
	(_initialize_macrocmd): Use add_basic_prefix_cmd.
	* language.c (set_check, show_check): Remove.
	(_initialize_language): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* infcmd.c (unset_command): Remove.
	(_initialize_infcmd): Use add_basic_prefix_cmd.
	* i386-tdep.c (set_mpx_cmd, show_mpx_cmd): Remove.
	(_initialize_i386_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* go32-nat.c (go32_info_dos_command): Remove.
	(_initialize_go32_nat): Use add_basic_prefix_cmd.
	* cli/cli-decode.c (do_prefix_cmd, add_basic_prefix_cmd)
	(do_show_prefix_cmd, add_show_prefix_cmd): New functions.
	* frame.c (set_backtrace_cmd, show_backtrace_cmd): Remove.
	(_initialize_frame): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* dcache.c (set_dcache_command, show_dcache_command): Remove.
	(_initialize_dcache): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* cp-support.c (maint_cplus_command): Remove.
	(_initialize_cp_support): Use add_basic_prefix_cmd.
	* btrace.c (maint_btrace_cmd, maint_btrace_set_cmd)
	(maint_btrace_show_cmd, maint_btrace_pt_set_cmd)
	(maint_btrace_pt_show_cmd, _initialize_btrace): Use
	add_basic_prefix_cmd, add_show_prefix_cmd.
	* breakpoint.c (save_command): Remove.
	(_initialize_breakpoint): Use add_basic_prefix_cmd.
	* arm-tdep.c (set_arm_command, show_arm_command): Remove.
	(_initialize_arm_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* ada-lang.c (maint_set_ada_cmd, maint_show_ada_cmd)
	(set_ada_command, show_ada_command): Remove.
	(_initialize_ada_language): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* command.h (add_basic_prefix_cmd, add_show_prefix_cmd): Declare.

gdb/testsuite/ChangeLog
2020-04-17  Tom Tromey  <tromey@adacore.com>

	* gdb.cp/maint.exp (test_help): Simplify multiple_help_body.
	Update tests.
	* gdb.btrace/cpu.exp: Update tests.
	* gdb.base/maint.exp: Update tests.
	* gdb.base/default.exp: Update tests.
	* gdb.base/completion.exp: Update tests.
 2020-04-17 15:13:41 -06:00
Tom Tromey
227031b2bf Cast to bfd_vma in arm-tdep.c 
Some arm-tdep.c data structures use a bfd_vma.  A couple of spots will
warn about an implicit narrowing cast when building a gdb where
CORE_ADDR is 64-bit but bfd_vma is 32-bit.

This patch silences these warnings by changing the types in question
to CORE_ADDR.

gdb/ChangeLog
2020-03-12  Tom Tromey  <tom@tromey.com>

	* arm-tdep.c (struct arm_mapping_symbol) <value>: Now a
	CORE_ADDR.
	(struct arm_exidx_entry) <addr>: Now a CORE_ADDR.
 2020-03-12 13:32:15 -06:00
Simon Marchi
5f661e0397 gnulib: import count-one-bits module and use it 
For a fix I intend to submit, I would need a function that counts the
number of set bits in a word.  There is  __builtin_popcount that is
supported by gcc and clang, but there is also a gnulib module that wraps
that and provides a fallback for other compilers, so I think it would be
good to use it.

I also noticed that there is a bitcount function in arch/arm.c, so I
thought that as a first step I would replace that one with the gnulib
count-one-bits module.  This is what this patch does.

The gnulib module provides multiple functions, with various parameter
length (unsigned int, unsigned long int, unsigned long long int), I
chose the one that made sense for each call site based on the argument
type.

gnulib/ChangeLog:

	* update-gnulib.sh (IMPORTED_GNULIB_MODULES): Import
	count-one-bits module.
	* configure: Re-generate.
	* aclocal.m4: Re-generate.
	* Makefile.in: Re-generate.
	* import/count-one-bits.c: New file.
	* import/count-one-bits.h: New file.
	* import/Makefile.am: Re-generate.
	* import/Makefile.in: Re-generate.
	* import/m4/gnulib-cache.m4: Re-generate.
	* import/m4/gnulib-comp.m4: Re-generate.
	* import/m4/count-one-bits.m4: New file.

gdb/ChangeLog:

	* arm-tdep.c: Include count-one-bits.h.
	(cleanup_block_store_pc): Use count_one_bits.
	(cleanup_block_load_pc): Use count_one_bits.
	(arm_copy_block_xfer): Use count_one_bits.
	(thumb2_copy_block_xfer): Use count_one_bits.
	(thumb_copy_pop_pc_16bit): Use count_one_bits.
	* arch/arm-get-next-pcs.c: Include count-one-bits.h.
	(thumb_get_next_pcs_raw): Use count_one_bits.
	(arm_get_next_pcs_raw): Use count_one_bits_l.
	* arch/arm.c (bitcount): Remove.
	* arch/arm.h (bitcount): Remove.
 2020-02-14 14:41:07 -05:00
Christian Biesinger
7559c21717 Change booleans to bool in ARM's gdbarch_tdep 
gdb/ChangeLog:

2020-02-12  Christian Biesinger  <cbiesinger@google.com>

	* arm-tdep.c (arm_gdbarch_init): Update.
	* arm-tdep.h (struct gdbarch_tdep) <have_fpa_registers,
	have_wmmx_registers, have_vfp_pseudos, have_neon_pseudos,
	have_neon, is_m>: Change to bool.
 2020-02-12 16:49:08 -06:00
Christian Biesinger
aeefc73cb2 Print more information in arm_dump_tdep 
I am keeping the (int) casts because a future patch will change the type
to bool.

gdb/ChangeLog:

2020-02-12  Christian Biesinger  <cbiesinger@google.com>

	* arm-tdep.c (arm_dump_tdep): Print more fields of tdep.
 2020-02-12 16:28:48 -06:00
Christian Biesinger
754e156431 Add missing \n in fprintf 
gdb/ChangeLog:

2020-02-11  Christian Biesinger  <cbiesinger@google.com>

	* arm-tdep.c (arm_dump_tdep): Add \n in fprintf.

Change-Id: I0175572436cc7dec29e852c96371f85ea763ba2a
 2020-02-11 10:22:33 -06:00
Tom Tromey
82ca895718 Move DWARF code to dwarf2/ subdirectory 
This moves all the remaining DWARF code to the new dwarf2
subdirectory.  This is just a simple renaming, with updates to
includes as needed.

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2/expr.c: Rename from dwarf2expr.c.
	* dwarf2/expr.h: Rename from dwarf2expr.h.
	* dwarf2/frame-tailcall.c: Rename from dwarf2-frame-tailcall.c.
	* dwarf2/frame-tailcall.h: Rename from dwarf2-frame-tailcall.h.
	* dwarf2/frame.c: Rename from dwarf2-frame.c.
	* dwarf2/frame.h: Rename from dwarf2-frame.h.
	* dwarf2/index-cache.c: Rename from dwarf-index-cache.c.
	* dwarf2/index-cache.h: Rename from dwarf-index-cache.h.
	* dwarf2/index-common.c: Rename from dwarf-index-common.c.
	* dwarf2/index-common.h: Rename from dwarf-index-common.h.
	* dwarf2/index-write.c: Rename from dwarf-index-write.c.
	* dwarf2/index-write.h: Rename from dwarf-index-write.h.
	* dwarf2/loc.c: Rename from dwarf2loc.c.
	* dwarf2/loc.h: Rename from dwarf2loc.h.
	* dwarf2/read.c: Rename from dwarf2read.c.
	* dwarf2/read.h: Rename from dwarf2read.h.
	* dwarf2/abbrev.c, aarch64-tdep.c, alpha-tdep.c,
	amd64-darwin-tdep.c, arc-tdep.c, arm-tdep.c, bfin-tdep.c,
	compile/compile-c-symbols.c, compile/compile-cplus-symbols.c,
	compile/compile-loc2c.c, cris-tdep.c, csky-tdep.c, findvar.c,
	gdbtypes.c, guile/scm-type.c, h8300-tdep.c, hppa-bsd-tdep.c,
	hppa-linux-tdep.c, i386-darwin-tdep.c, i386-linux-tdep.c,
	i386-tdep.c, iq2000-tdep.c, m32c-tdep.c, m68hc11-tdep.c,
	m68k-tdep.c, microblaze-tdep.c, mips-tdep.c, mn10300-tdep.c,
	msp430-tdep.c, nds32-tdep.c, nios2-tdep.c, or1k-tdep.c,
	riscv-tdep.c, rl78-tdep.c, rs6000-tdep.c, rx-tdep.c, s12z-tdep.c,
	s390-tdep.c, score-tdep.c, sh-tdep.c, sparc-linux-tdep.c,
	sparc-tdep.c, sparc64-linux-tdep.c, sparc64-tdep.c, tic6x-tdep.c,
	tilegx-tdep.c, v850-tdep.c, xstormy16-tdep.c, xtensa-tdep.c:
	Update.
	* Makefile.in (COMMON_SFILES): Update.
	(HFILES_NO_SRCDIR): Update.

Change-Id: Ied9ce1436cd27ac4a4cffef10ec92e396f181928
 2020-02-08 13:40:59 -07:00
Simon Marchi
6c2659886f gdb: add back declarations for _initialize functions 
I'd like to enable the -Wmissing-declarations warning.  However, it
warns for every _initialize function, for example:

      CXX    dcache.o
    /home/smarchi/src/binutils-gdb/gdb/dcache.c: In function ‘void _initialize_dcache()’:
    /home/smarchi/src/binutils-gdb/gdb/dcache.c:688:1: error: no previous declaration for ‘void _initialize_dcache()’ [-Werror=missing-declarations]
     _initialize_dcache (void)
     ^~~~~~~~~~~~~~~~~~

The only practical way forward I found is to add back the declarations,
which were removed by this commit:

    commit 481695ed5f
    Author: John Baldwin <jhb@FreeBSD.org>
    Date:   Sat Sep 9 11:02:37 2017 -0700

        Remove unnecessary function prototypes.

I don't think it's a big problem to have the declarations for these
functions, but if anybody has a better solution for this, I'll be happy
to use it.

gdb/ChangeLog:

	* aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Add declaration.
	* aarch64-fbsd-tdep.c (_initialize_aarch64_fbsd_tdep): Add declaration.
	* aarch64-linux-nat.c (_initialize_aarch64_linux_nat): Add declaration.
	* aarch64-linux-tdep.c (_initialize_aarch64_linux_tdep): Add declaration.
	* aarch64-newlib-tdep.c (_initialize_aarch64_newlib_tdep): Add declaration.
	* aarch64-tdep.c (_initialize_aarch64_tdep): Add declaration.
	* ada-exp.y (_initialize_ada_exp): Add declaration.
	* ada-lang.c (_initialize_ada_language): Add declaration.
	* ada-tasks.c (_initialize_tasks): Add declaration.
	* agent.c (_initialize_agent): Add declaration.
	* aix-thread.c (_initialize_aix_thread): Add declaration.
	* alpha-bsd-nat.c (_initialize_alphabsd_nat): Add declaration.
	* alpha-linux-nat.c (_initialize_alpha_linux_nat): Add declaration.
	* alpha-linux-tdep.c (_initialize_alpha_linux_tdep): Add declaration.
	* alpha-nbsd-tdep.c (_initialize_alphanbsd_tdep): Add declaration.
	* alpha-obsd-tdep.c (_initialize_alphaobsd_tdep): Add declaration.
	* alpha-tdep.c (_initialize_alpha_tdep): Add declaration.
	* amd64-darwin-tdep.c (_initialize_amd64_darwin_tdep): Add declaration.
	* amd64-dicos-tdep.c (_initialize_amd64_dicos_tdep): Add declaration.
	* amd64-fbsd-nat.c (_initialize_amd64fbsd_nat): Add declaration.
	* amd64-fbsd-tdep.c (_initialize_amd64fbsd_tdep): Add declaration.
	* amd64-linux-nat.c (_initialize_amd64_linux_nat): Add declaration.
	* amd64-linux-tdep.c (_initialize_amd64_linux_tdep): Add declaration.
	* amd64-nbsd-nat.c (_initialize_amd64nbsd_nat): Add declaration.
	* amd64-nbsd-tdep.c (_initialize_amd64nbsd_tdep): Add declaration.
	* amd64-obsd-nat.c (_initialize_amd64obsd_nat): Add declaration.
	* amd64-obsd-tdep.c (_initialize_amd64obsd_tdep): Add declaration.
	* amd64-sol2-tdep.c (_initialize_amd64_sol2_tdep): Add declaration.
	* amd64-tdep.c (_initialize_amd64_tdep): Add declaration.
	* amd64-windows-nat.c (_initialize_amd64_windows_nat): Add declaration.
	* amd64-windows-tdep.c (_initialize_amd64_windows_tdep): Add declaration.
	* annotate.c (_initialize_annotate): Add declaration.
	* arc-newlib-tdep.c (_initialize_arc_newlib_tdep): Add declaration.
	* arc-tdep.c (_initialize_arc_tdep): Add declaration.
	* arch-utils.c (_initialize_gdbarch_utils): Add declaration.
	* arm-fbsd-nat.c (_initialize_arm_fbsd_nat): Add declaration.
	* arm-fbsd-tdep.c (_initialize_arm_fbsd_tdep): Add declaration.
	* arm-linux-nat.c (_initialize_arm_linux_nat): Add declaration.
	* arm-linux-tdep.c (_initialize_arm_linux_tdep): Add declaration.
	* arm-nbsd-nat.c (_initialize_arm_netbsd_nat): Add declaration.
	* arm-nbsd-tdep.c (_initialize_arm_netbsd_tdep): Add declaration.
	* arm-obsd-tdep.c (_initialize_armobsd_tdep): Add declaration.
	* arm-pikeos-tdep.c (_initialize_arm_pikeos_tdep): Add declaration.
	* arm-symbian-tdep.c (_initialize_arm_symbian_tdep): Add declaration.
	* arm-tdep.c (_initialize_arm_tdep): Add declaration.
	* arm-wince-tdep.c (_initialize_arm_wince_tdep): Add declaration.
	* auto-load.c (_initialize_auto_load): Add declaration.
	* auxv.c (_initialize_auxv): Add declaration.
	* avr-tdep.c (_initialize_avr_tdep): Add declaration.
	* ax-gdb.c (_initialize_ax_gdb): Add declaration.
	* bfin-linux-tdep.c (_initialize_bfin_linux_tdep): Add declaration.
	* bfin-tdep.c (_initialize_bfin_tdep): Add declaration.
	* break-catch-sig.c (_initialize_break_catch_sig): Add declaration.
	* break-catch-syscall.c (_initialize_break_catch_syscall): Add declaration.
	* break-catch-throw.c (_initialize_break_catch_throw): Add declaration.
	* breakpoint.c (_initialize_breakpoint): Add declaration.
	* bsd-uthread.c (_initialize_bsd_uthread): Add declaration.
	* btrace.c (_initialize_btrace): Add declaration.
	* charset.c (_initialize_charset): Add declaration.
	* cli/cli-cmds.c (_initialize_cli_cmds): Add declaration.
	* cli/cli-dump.c (_initialize_cli_dump): Add declaration.
	* cli/cli-interp.c (_initialize_cli_interp): Add declaration.
	* cli/cli-logging.c (_initialize_cli_logging): Add declaration.
	* cli/cli-script.c (_initialize_cli_script): Add declaration.
	* cli/cli-style.c (_initialize_cli_style): Add declaration.
	* coff-pe-read.c (_initialize_coff_pe_read): Add declaration.
	* coffread.c (_initialize_coffread): Add declaration.
	* compile/compile-cplus-types.c (_initialize_compile_cplus_types): Add declaration.
	* compile/compile.c (_initialize_compile): Add declaration.
	* complaints.c (_initialize_complaints): Add declaration.
	* completer.c (_initialize_completer): Add declaration.
	* copying.c (_initialize_copying): Add declaration.
	* corefile.c (_initialize_core): Add declaration.
	* corelow.c (_initialize_corelow): Add declaration.
	* cp-abi.c (_initialize_cp_abi): Add declaration.
	* cp-namespace.c (_initialize_cp_namespace): Add declaration.
	* cp-support.c (_initialize_cp_support): Add declaration.
	* cp-valprint.c (_initialize_cp_valprint): Add declaration.
	* cris-linux-tdep.c (_initialize_cris_linux_tdep): Add declaration.
	* cris-tdep.c (_initialize_cris_tdep): Add declaration.
	* csky-linux-tdep.c (_initialize_csky_linux_tdep): Add declaration.
	* csky-tdep.c (_initialize_csky_tdep): Add declaration.
	* ctfread.c (_initialize_ctfread): Add declaration.
	* d-lang.c (_initialize_d_language): Add declaration.
	* darwin-nat-info.c (_initialize_darwin_info_commands): Add declaration.
	* darwin-nat.c (_initialize_darwin_nat): Add declaration.
	* dbxread.c (_initialize_dbxread): Add declaration.
	* dcache.c (_initialize_dcache): Add declaration.
	* disasm-selftests.c (_initialize_disasm_selftests): Add declaration.
	* disasm.c (_initialize_disasm): Add declaration.
	* dtrace-probe.c (_initialize_dtrace_probe): Add declaration.
	* dummy-frame.c (_initialize_dummy_frame): Add declaration.
	* dwarf-index-cache.c (_initialize_index_cache): Add declaration.
	* dwarf-index-write.c (_initialize_dwarf_index_write): Add declaration.
	* dwarf2-frame-tailcall.c (_initialize_tailcall_frame): Add declaration.
	* dwarf2-frame.c (_initialize_dwarf2_frame): Add declaration.
	* dwarf2expr.c (_initialize_dwarf2expr): Add declaration.
	* dwarf2loc.c (_initialize_dwarf2loc): Add declaration.
	* dwarf2read.c (_initialize_dwarf2_read): Add declaration.
	* elfread.c (_initialize_elfread): Add declaration.
	* exec.c (_initialize_exec): Add declaration.
	* extension.c (_initialize_extension): Add declaration.
	* f-lang.c (_initialize_f_language): Add declaration.
	* f-valprint.c (_initialize_f_valprint): Add declaration.
	* fbsd-nat.c (_initialize_fbsd_nat): Add declaration.
	* fbsd-tdep.c (_initialize_fbsd_tdep): Add declaration.
	* filesystem.c (_initialize_filesystem): Add declaration.
	* findcmd.c (_initialize_mem_search): Add declaration.
	* findvar.c (_initialize_findvar): Add declaration.
	* fork-child.c (_initialize_fork_child): Add declaration.
	* frame-base.c (_initialize_frame_base): Add declaration.
	* frame-unwind.c (_initialize_frame_unwind): Add declaration.
	* frame.c (_initialize_frame): Add declaration.
	* frv-linux-tdep.c (_initialize_frv_linux_tdep): Add declaration.
	* frv-tdep.c (_initialize_frv_tdep): Add declaration.
	* ft32-tdep.c (_initialize_ft32_tdep): Add declaration.
	* gcore.c (_initialize_gcore): Add declaration.
	* gdb-demangle.c (_initialize_gdb_demangle): Add declaration.
	* gdb_bfd.c (_initialize_gdb_bfd): Add declaration.
	* gdbarch-selftests.c (_initialize_gdbarch_selftests): Add declaration.
	* gdbarch.c (_initialize_gdbarch): Add declaration.
	* gdbtypes.c (_initialize_gdbtypes): Add declaration.
	* gnu-nat.c (_initialize_gnu_nat): Add declaration.
	* gnu-v2-abi.c (_initialize_gnu_v2_abi): Add declaration.
	* gnu-v3-abi.c (_initialize_gnu_v3_abi): Add declaration.
	* go-lang.c (_initialize_go_language): Add declaration.
	* go32-nat.c (_initialize_go32_nat): Add declaration.
	* guile/guile.c (_initialize_guile): Add declaration.
	* h8300-tdep.c (_initialize_h8300_tdep): Add declaration.
	* hppa-linux-nat.c (_initialize_hppa_linux_nat): Add declaration.
	* hppa-linux-tdep.c (_initialize_hppa_linux_tdep): Add declaration.
	* hppa-nbsd-nat.c (_initialize_hppanbsd_nat): Add declaration.
	* hppa-nbsd-tdep.c (_initialize_hppanbsd_tdep): Add declaration.
	* hppa-obsd-nat.c (_initialize_hppaobsd_nat): Add declaration.
	* hppa-obsd-tdep.c (_initialize_hppabsd_tdep): Add declaration.
	* hppa-tdep.c (_initialize_hppa_tdep): Add declaration.
	* i386-bsd-nat.c (_initialize_i386bsd_nat): Add declaration.
	* i386-cygwin-tdep.c (_initialize_i386_cygwin_tdep): Add declaration.
	* i386-darwin-nat.c (_initialize_i386_darwin_nat): Add declaration.
	* i386-darwin-tdep.c (_initialize_i386_darwin_tdep): Add declaration.
	* i386-dicos-tdep.c (_initialize_i386_dicos_tdep): Add declaration.
	* i386-fbsd-nat.c (_initialize_i386fbsd_nat): Add declaration.
	* i386-fbsd-tdep.c (_initialize_i386fbsd_tdep): Add declaration.
	* i386-gnu-nat.c (_initialize_i386gnu_nat): Add declaration.
	* i386-gnu-tdep.c (_initialize_i386gnu_tdep): Add declaration.
	* i386-go32-tdep.c (_initialize_i386_go32_tdep): Add declaration.
	* i386-linux-nat.c (_initialize_i386_linux_nat): Add declaration.
	* i386-linux-tdep.c (_initialize_i386_linux_tdep): Add declaration.
	* i386-nbsd-nat.c (_initialize_i386nbsd_nat): Add declaration.
	* i386-nbsd-tdep.c (_initialize_i386nbsd_tdep): Add declaration.
	* i386-nto-tdep.c (_initialize_i386nto_tdep): Add declaration.
	* i386-obsd-nat.c (_initialize_i386obsd_nat): Add declaration.
	* i386-obsd-tdep.c (_initialize_i386obsd_tdep): Add declaration.
	* i386-sol2-nat.c (_initialize_amd64_sol2_nat): Add declaration.
	* i386-sol2-tdep.c (_initialize_i386_sol2_tdep): Add declaration.
	* i386-tdep.c (_initialize_i386_tdep): Add declaration.
	* i386-windows-nat.c (_initialize_i386_windows_nat): Add declaration.
	* ia64-libunwind-tdep.c (_initialize_libunwind_frame): Add declaration.
	* ia64-linux-nat.c (_initialize_ia64_linux_nat): Add declaration.
	* ia64-linux-tdep.c (_initialize_ia64_linux_tdep): Add declaration.
	* ia64-tdep.c (_initialize_ia64_tdep): Add declaration.
	* ia64-vms-tdep.c (_initialize_ia64_vms_tdep): Add declaration.
	* infcall.c (_initialize_infcall): Add declaration.
	* infcmd.c (_initialize_infcmd): Add declaration.
	* inflow.c (_initialize_inflow): Add declaration.
	* infrun.c (_initialize_infrun): Add declaration.
	* interps.c (_initialize_interpreter): Add declaration.
	* iq2000-tdep.c (_initialize_iq2000_tdep): Add declaration.
	* jit.c (_initialize_jit): Add declaration.
	* language.c (_initialize_language): Add declaration.
	* linux-fork.c (_initialize_linux_fork): Add declaration.
	* linux-nat.c (_initialize_linux_nat): Add declaration.
	* linux-tdep.c (_initialize_linux_tdep): Add declaration.
	* linux-thread-db.c (_initialize_thread_db): Add declaration.
	* lm32-tdep.c (_initialize_lm32_tdep): Add declaration.
	* m2-lang.c (_initialize_m2_language): Add declaration.
	* m32c-tdep.c (_initialize_m32c_tdep): Add declaration.
	* m32r-linux-nat.c (_initialize_m32r_linux_nat): Add declaration.
	* m32r-linux-tdep.c (_initialize_m32r_linux_tdep): Add declaration.
	* m32r-tdep.c (_initialize_m32r_tdep): Add declaration.
	* m68hc11-tdep.c (_initialize_m68hc11_tdep): Add declaration.
	* m68k-bsd-nat.c (_initialize_m68kbsd_nat): Add declaration.
	* m68k-bsd-tdep.c (_initialize_m68kbsd_tdep): Add declaration.
	* m68k-linux-nat.c (_initialize_m68k_linux_nat): Add declaration.
	* m68k-linux-tdep.c (_initialize_m68k_linux_tdep): Add declaration.
	* m68k-tdep.c (_initialize_m68k_tdep): Add declaration.
	* machoread.c (_initialize_machoread): Add declaration.
	* macrocmd.c (_initialize_macrocmd): Add declaration.
	* macroscope.c (_initialize_macroscope): Add declaration.
	* maint-test-options.c (_initialize_maint_test_options): Add declaration.
	* maint-test-settings.c (_initialize_maint_test_settings): Add declaration.
	* maint.c (_initialize_maint_cmds): Add declaration.
	* mdebugread.c (_initialize_mdebugread): Add declaration.
	* memattr.c (_initialize_mem): Add declaration.
	* mep-tdep.c (_initialize_mep_tdep): Add declaration.
	* mi/mi-cmd-env.c (_initialize_mi_cmd_env): Add declaration.
	* mi/mi-cmds.c (_initialize_mi_cmds): Add declaration.
	* mi/mi-interp.c (_initialize_mi_interp): Add declaration.
	* mi/mi-main.c (_initialize_mi_main): Add declaration.
	* microblaze-linux-tdep.c (_initialize_microblaze_linux_tdep): Add declaration.
	* microblaze-tdep.c (_initialize_microblaze_tdep): Add declaration.
	* mips-fbsd-nat.c (_initialize_mips_fbsd_nat): Add declaration.
	* mips-fbsd-tdep.c (_initialize_mips_fbsd_tdep): Add declaration.
	* mips-linux-nat.c (_initialize_mips_linux_nat): Add declaration.
	* mips-linux-tdep.c (_initialize_mips_linux_tdep): Add declaration.
	* mips-nbsd-nat.c (_initialize_mipsnbsd_nat): Add declaration.
	* mips-nbsd-tdep.c (_initialize_mipsnbsd_tdep): Add declaration.
	* mips-sde-tdep.c (_initialize_mips_sde_tdep): Add declaration.
	* mips-tdep.c (_initialize_mips_tdep): Add declaration.
	* mips64-obsd-nat.c (_initialize_mips64obsd_nat): Add declaration.
	* mips64-obsd-tdep.c (_initialize_mips64obsd_tdep): Add declaration.
	* mipsread.c (_initialize_mipsread): Add declaration.
	* mn10300-linux-tdep.c (_initialize_mn10300_linux_tdep): Add declaration.
	* mn10300-tdep.c (_initialize_mn10300_tdep): Add declaration.
	* moxie-tdep.c (_initialize_moxie_tdep): Add declaration.
	* msp430-tdep.c (_initialize_msp430_tdep): Add declaration.
	* nds32-tdep.c (_initialize_nds32_tdep): Add declaration.
	* nios2-linux-tdep.c (_initialize_nios2_linux_tdep): Add declaration.
	* nios2-tdep.c (_initialize_nios2_tdep): Add declaration.
	* nto-procfs.c (_initialize_procfs): Add declaration.
	* objc-lang.c (_initialize_objc_language): Add declaration.
	* observable.c (_initialize_observer): Add declaration.
	* opencl-lang.c (_initialize_opencl_language): Add declaration.
	* or1k-linux-tdep.c (_initialize_or1k_linux_tdep): Add declaration.
	* or1k-tdep.c (_initialize_or1k_tdep): Add declaration.
	* osabi.c (_initialize_gdb_osabi): Add declaration.
	* osdata.c (_initialize_osdata): Add declaration.
	* p-valprint.c (_initialize_pascal_valprint): Add declaration.
	* parse.c (_initialize_parse): Add declaration.
	* ppc-fbsd-nat.c (_initialize_ppcfbsd_nat): Add declaration.
	* ppc-fbsd-tdep.c (_initialize_ppcfbsd_tdep): Add declaration.
	* ppc-linux-nat.c (_initialize_ppc_linux_nat): Add declaration.
	* ppc-linux-tdep.c (_initialize_ppc_linux_tdep): Add declaration.
	* ppc-nbsd-nat.c (_initialize_ppcnbsd_nat): Add declaration.
	* ppc-nbsd-tdep.c (_initialize_ppcnbsd_tdep): Add declaration.
	* ppc-obsd-nat.c (_initialize_ppcobsd_nat): Add declaration.
	* ppc-obsd-tdep.c (_initialize_ppcobsd_tdep): Add declaration.
	* printcmd.c (_initialize_printcmd): Add declaration.
	* probe.c (_initialize_probe): Add declaration.
	* proc-api.c (_initialize_proc_api): Add declaration.
	* proc-events.c (_initialize_proc_events): Add declaration.
	* proc-service.c (_initialize_proc_service): Add declaration.
	* procfs.c (_initialize_procfs): Add declaration.
	* producer.c (_initialize_producer): Add declaration.
	* psymtab.c (_initialize_psymtab): Add declaration.
	* python/python.c (_initialize_python): Add declaration.
	* ravenscar-thread.c (_initialize_ravenscar): Add declaration.
	* record-btrace.c (_initialize_record_btrace): Add declaration.
	* record-full.c (_initialize_record_full): Add declaration.
	* record.c (_initialize_record): Add declaration.
	* regcache-dump.c (_initialize_regcache_dump): Add declaration.
	* regcache.c (_initialize_regcache): Add declaration.
	* reggroups.c (_initialize_reggroup): Add declaration.
	* remote-notif.c (_initialize_notif): Add declaration.
	* remote-sim.c (_initialize_remote_sim): Add declaration.
	* remote.c (_initialize_remote): Add declaration.
	* reverse.c (_initialize_reverse): Add declaration.
	* riscv-fbsd-nat.c (_initialize_riscv_fbsd_nat): Add declaration.
	* riscv-fbsd-tdep.c (_initialize_riscv_fbsd_tdep): Add declaration.
	* riscv-linux-nat.c (_initialize_riscv_linux_nat): Add declaration.
	* riscv-linux-tdep.c (_initialize_riscv_linux_tdep): Add declaration.
	* riscv-tdep.c (_initialize_riscv_tdep): Add declaration.
	* rl78-tdep.c (_initialize_rl78_tdep): Add declaration.
	* rs6000-aix-tdep.c (_initialize_rs6000_aix_tdep): Add declaration.
	* rs6000-lynx178-tdep.c (_initialize_rs6000_lynx178_tdep):
	Add declaration.
	* rs6000-nat.c (_initialize_rs6000_nat): Add declaration.
	* rs6000-tdep.c (_initialize_rs6000_tdep): Add declaration.
	* run-on-main-thread.c (_initialize_run_on_main_thread): Add declaration.
	* rust-exp.y (_initialize_rust_exp): Add declaration.
	* rx-tdep.c (_initialize_rx_tdep): Add declaration.
	* s12z-tdep.c (_initialize_s12z_tdep): Add declaration.
	* s390-linux-nat.c (_initialize_s390_nat): Add declaration.
	* s390-linux-tdep.c (_initialize_s390_linux_tdep): Add declaration.
	* s390-tdep.c (_initialize_s390_tdep): Add declaration.
	* score-tdep.c (_initialize_score_tdep): Add declaration.
	* ser-go32.c (_initialize_ser_dos): Add declaration.
	* ser-mingw.c (_initialize_ser_windows): Add declaration.
	* ser-pipe.c (_initialize_ser_pipe): Add declaration.
	* ser-tcp.c (_initialize_ser_tcp): Add declaration.
	* ser-uds.c (_initialize_ser_socket): Add declaration.
	* ser-unix.c (_initialize_ser_hardwire): Add declaration.
	* serial.c (_initialize_serial): Add declaration.
	* sh-linux-tdep.c (_initialize_sh_linux_tdep): Add declaration.
	* sh-nbsd-nat.c (_initialize_shnbsd_nat): Add declaration.
	* sh-nbsd-tdep.c (_initialize_shnbsd_tdep): Add declaration.
	* sh-tdep.c (_initialize_sh_tdep): Add declaration.
	* skip.c (_initialize_step_skip): Add declaration.
	* sol-thread.c (_initialize_sol_thread): Add declaration.
	* solib-aix.c (_initialize_solib_aix): Add declaration.
	* solib-darwin.c (_initialize_darwin_solib): Add declaration.
	* solib-dsbt.c (_initialize_dsbt_solib): Add declaration.
	* solib-frv.c (_initialize_frv_solib): Add declaration.
	* solib-svr4.c (_initialize_svr4_solib): Add declaration.
	* solib-target.c (_initialize_solib_target): Add declaration.
	* solib.c (_initialize_solib): Add declaration.
	* source-cache.c (_initialize_source_cache): Add declaration.
	* source.c (_initialize_source): Add declaration.
	* sparc-linux-nat.c (_initialize_sparc_linux_nat): Add declaration.
	* sparc-linux-tdep.c (_initialize_sparc_linux_tdep): Add declaration.
	* sparc-nat.c (_initialize_sparc_nat): Add declaration.
	* sparc-nbsd-nat.c (_initialize_sparcnbsd_nat): Add declaration.
	* sparc-nbsd-tdep.c (_initialize_sparcnbsd_tdep): Add declaration.
	* sparc-obsd-tdep.c (_initialize_sparc32obsd_tdep): Add declaration.
	* sparc-sol2-tdep.c (_initialize_sparc_sol2_tdep): Add declaration.
	* sparc-tdep.c (_initialize_sparc_tdep): Add declaration.
	* sparc64-fbsd-nat.c (_initialize_sparc64fbsd_nat): Add declaration.
	* sparc64-fbsd-tdep.c (_initialize_sparc64fbsd_tdep): Add declaration.
	* sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Add declaration.
	* sparc64-linux-tdep.c (_initialize_sparc64_linux_tdep): Add declaration.
	* sparc64-nat.c (_initialize_sparc64_nat): Add declaration.
	* sparc64-nbsd-nat.c (_initialize_sparc64nbsd_nat): Add declaration.
	* sparc64-nbsd-tdep.c (_initialize_sparc64nbsd_tdep): Add declaration.
	* sparc64-obsd-nat.c (_initialize_sparc64obsd_nat): Add declaration.
	* sparc64-obsd-tdep.c (_initialize_sparc64obsd_tdep): Add declaration.
	* sparc64-sol2-tdep.c (_initialize_sparc64_sol2_tdep): Add declaration.
	* sparc64-tdep.c (_initialize_sparc64_adi_tdep): Add declaration.
	* stabsread.c (_initialize_stabsread): Add declaration.
	* stack.c (_initialize_stack): Add declaration.
	* stap-probe.c (_initialize_stap_probe): Add declaration.
	* std-regs.c (_initialize_frame_reg): Add declaration.
	* symfile-debug.c (_initialize_symfile_debug): Add declaration.
	* symfile-mem.c (_initialize_symfile_mem): Add declaration.
	* symfile.c (_initialize_symfile): Add declaration.
	* symmisc.c (_initialize_symmisc): Add declaration.
	* symtab.c (_initialize_symtab): Add declaration.
	* target.c (_initialize_target): Add declaration.
	* target-connection.c (_initialize_target_connection): Add
	declaration.
	* target-dcache.c (_initialize_target_dcache): Add declaration.
	* target-descriptions.c (_initialize_target_descriptions): Add declaration.
	* thread.c (_initialize_thread): Add declaration.
	* tic6x-linux-tdep.c (_initialize_tic6x_linux_tdep): Add declaration.
	* tic6x-tdep.c (_initialize_tic6x_tdep): Add declaration.
	* tilegx-linux-nat.c (_initialize_tile_linux_nat): Add declaration.
	* tilegx-linux-tdep.c (_initialize_tilegx_linux_tdep): Add declaration.
	* tilegx-tdep.c (_initialize_tilegx_tdep): Add declaration.
	* tracectf.c (_initialize_ctf): Add declaration.
	* tracefile-tfile.c (_initialize_tracefile_tfile): Add declaration.
	* tracefile.c (_initialize_tracefile): Add declaration.
	* tracepoint.c (_initialize_tracepoint): Add declaration.
	* tui/tui-hooks.c (_initialize_tui_hooks): Add declaration.
	* tui/tui-interp.c (_initialize_tui_interp): Add declaration.
	* tui/tui-layout.c (_initialize_tui_layout): Add declaration.
	* tui/tui-regs.c (_initialize_tui_regs): Add declaration.
	* tui/tui-stack.c (_initialize_tui_stack): Add declaration.
	* tui/tui-win.c (_initialize_tui_win): Add declaration.
	* tui/tui.c (_initialize_tui): Add declaration.
	* typeprint.c (_initialize_typeprint): Add declaration.
	* ui-style.c (_initialize_ui_style): Add declaration.
	* unittests/array-view-selftests.c (_initialize_array_view_selftests): Add declaration.
	* unittests/child-path-selftests.c (_initialize_child_path_selftests): Add declaration.
	* unittests/cli-utils-selftests.c (_initialize_cli_utils_selftests): Add declaration.
	* unittests/common-utils-selftests.c (_initialize_common_utils_selftests): Add declaration.
	* unittests/copy_bitwise-selftests.c (_initialize_copy_bitwise_utils_selftests): Add declaration.
	* unittests/environ-selftests.c (_initialize_environ_selftests): Add declaration.
	* unittests/filtered_iterator-selftests.c
	(_initialize_filtered_iterator_selftests): Add declaration.
	* unittests/format_pieces-selftests.c (_initialize_format_pieces_selftests): Add declaration.
	* unittests/function-view-selftests.c (_initialize_function_view_selftests): Add declaration.
	* unittests/help-doc-selftests.c (_initialize_help_doc_selftests): Add declaration.
	* unittests/lookup_name_info-selftests.c (_initialize_lookup_name_info_selftests): Add declaration.
	* unittests/main-thread-selftests.c
	(_initialize_main_thread_selftests): Add declaration.
	* unittests/memory-map-selftests.c (_initialize_memory_map_selftests): Add declaration.
	* unittests/memrange-selftests.c (_initialize_memrange_selftests): Add declaration.
	* unittests/mkdir-recursive-selftests.c (_initialize_mkdir_recursive_selftests): Add declaration.
	* unittests/observable-selftests.c (_initialize_observer_selftest): Add declaration.
	* unittests/offset-type-selftests.c (_initialize_offset_type_selftests): Add declaration.
	* unittests/optional-selftests.c (_initialize_optional_selftests): Add declaration.
	* unittests/parse-connection-spec-selftests.c (_initialize_parse_connection_spec_selftests): Add declaration.
	* unittests/rsp-low-selftests.c (_initialize_rsp_low_selftests): Add declaration.
	* unittests/scoped_fd-selftests.c (_initialize_scoped_fd_selftests): Add declaration.
	* unittests/scoped_mmap-selftests.c (_initialize_scoped_mmap_selftests): Add declaration.
	* unittests/scoped_restore-selftests.c (_initialize_scoped_restore_selftests): Add declaration.
	* unittests/string_view-selftests.c (_initialize_string_view_selftests): Add declaration.
	* unittests/style-selftests.c (_initialize_style_selftest): Add declaration.
	* unittests/tracepoint-selftests.c (_initialize_tracepoint_selftests): Add declaration.
	* unittests/tui-selftests.c (_initialize_tui_selftest): Add
	declaration.
	* unittests/unpack-selftests.c (_initialize_unpack_selftests): Add declaration.
	* unittests/utils-selftests.c (_initialize_utils_selftests): Add declaration.
	* unittests/vec-utils-selftests.c (_initialize_vec_utils_selftests): Add declaration.
	* unittests/xml-utils-selftests.c (_initialize_xml_utils): Add declaration.
	* user-regs.c (_initialize_user_regs): Add declaration.
	* utils.c (_initialize_utils): Add declaration.
	* v850-tdep.c (_initialize_v850_tdep): Add declaration.
	* valops.c (_initialize_valops): Add declaration.
	* valprint.c (_initialize_valprint): Add declaration.
	* value.c (_initialize_values): Add declaration.
	* varobj.c (_initialize_varobj): Add declaration.
	* vax-bsd-nat.c (_initialize_vaxbsd_nat): Add declaration.
	* vax-nbsd-tdep.c (_initialize_vaxnbsd_tdep): Add declaration.
	* vax-tdep.c (_initialize_vax_tdep): Add declaration.
	* windows-nat.c (_initialize_windows_nat): Add declaration.
	(_initialize_check_for_gdb_ini): Add declaration.
	(_initialize_loadable): Add declaration.
	* windows-tdep.c (_initialize_windows_tdep): Add declaration.
	* x86-bsd-nat.c (_initialize_x86_bsd_nat): Add declaration.
	* x86-linux-nat.c (_initialize_x86_linux_nat): Add declaration.
	* xcoffread.c (_initialize_xcoffread): Add declaration.
	* xml-support.c (_initialize_xml_support): Add declaration.
	* xstormy16-tdep.c (_initialize_xstormy16_tdep): Add declaration.
	* xtensa-linux-nat.c (_initialize_xtensa_linux_nat): Add declaration.
	* xtensa-linux-tdep.c (_initialize_xtensa_linux_tdep): Add declaration.
	* xtensa-tdep.c (_initialize_xtensa_tdep): Add declaration.

Change-Id: I13eec7e0ed2b3c427377a7bdb055cf46da64def9
 2020-01-13 14:01:38 -05:00
Joel Brobecker
b811d2c292 Update copyright year range in all GDB files. 
gdb/ChangeLog:

        Update copyright year range in all GDB files.
 2020-01-01 10:20:53 +04:00
Christian Biesinger
c9d95fa3d0 Replace the MSYMBOL_*_NAME macros with member functions 
Improves readability. In the future, it will also allow making the name
private, once the name setter functions become member functions.

gdb/ChangeLog:

2019-11-22  Christian Biesinger  <cbiesinger@google.com>

	* ada-lang.c (ada_lookup_simple_minsym): Update.
	(ada_collect_symbol_completion_matches): Update.
	* ada-tasks.c (read_atcb): Update.
	* amd64-windows-tdep.c (amd64_skip_main_prologue): Update.
	(amd64_windows_skip_trampoline_code): Update.
	* arm-tdep.c (skip_prologue_function): Update.
	(arm_skip_stack_protector): Update.
	* arm-wince-tdep.c (arm_pe_skip_trampoline_code): Update.
	(arm_wince_skip_main_prologue): Update.
	* ax-gdb.c (gen_expr): Update.
	* block.c (call_site_for_pc): Update.
	* blockframe.c (find_pc_partial_function): Update.
	* breakpoint.c (set_breakpoint_location_function): Update.
	* btrace.c (ftrace_print_function_name): Update.
	(ftrace_function_switched): Update.
	* c-valprint.c (print_unpacked_pointer): Update.
	* coffread.c (coff_symfile_read): Update.
	* compile/compile-c-symbols.c (convert_symbol_bmsym): Update.
	* compile/compile-cplus-symbols.c (convert_symbol_bmsym): Update.
	* dwarf-index-write.c (write_psymbols): Update.
	* dwarf2loc.c (call_site_to_target_addr): Update.
	(func_verify_no_selftailcall): Update.
	(tailcall_dump): Update.
	(call_site_find_chain_1): Update.
	(dwarf_expr_reg_to_entry_parameter): Update.
	* elfread.c (elf_gnu_ifunc_record_cache): Update.
	* eval.c (evaluate_funcall): Update.
	(evaluate_subexp_standard): Update.
	(evaluate_subexp_for_sizeof): Update.
	* expprint.c (print_subexp_standard): Update.
	(dump_subexp_body_standard): Update.
	* frame.c (get_prev_frame_always_1): Update.
	* frv-tdep.c (frv_skip_main_prologue): Update.
	* gnu-v2-abi.c (gnuv2_value_rtti_type): Update.
	* gnu-v3-abi.c (gnuv3_rtti_type): Update.
	(gnuv3_get_typename_from_type_info): Update.
	(gnuv3_skip_trampoline): Update.
	* hppa-tdep.c (hppa_lookup_stub_minimal_symbol): Update.
	* i386-tdep.c (i386_skip_main_prologue): Update.
	(i386_pe_skip_trampoline_code): Update.
	* ia64-tdep.c (ia64_convert_from_func_ptr_addr): Update.
	* infcall.c (get_function_name): Update.
	* linespec.c (minsym_found): Update.
	* linux-fork.c (info_checkpoints_command): Update.
	* m32c-tdep.c (m32c_m16c_address_to_pointer): Update.
	(m32c_m16c_pointer_to_address): Update.
	* maint.c (maintenance_translate_address): Update.
	* minsyms.c (add_minsym_to_hash_table): Update.
	(add_minsym_to_demangled_hash_table): Update.
	(lookup_minimal_symbol_mangled): Update.
	(lookup_minimal_symbol_demangled): Update.
	(lookup_minimal_symbol_linkage): Update.
	(lookup_minimal_symbol_text): Update.
	(lookup_minimal_symbol_by_pc_name): Update.
	(minimal_symbol_is_less_than): Update.
	(compact_minimal_symbols): Update.
	(build_minimal_symbol_hash_tables): Update.
	(find_solib_trampoline_target): Update.
	* mips-tdep.c (mips_stub_frame_sniffer): Update.
	(mips_skip_pic_trampoline_code): Update.
	* msp430-tdep.c (msp430_skip_trampoline_code): Update.
	* objc-lang.c (info_selectors_command): Update.
	(info_classes_command): Update.
	(find_methods): Update.
	(find_imps): Update.
	* p-valprint.c (pascal_val_print): Update.
	* ppc-linux-tdep.c (powerpc_linux_in_dynsym_resolve_code): Update.
	* ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update.
	* printcmd.c (build_address_symbolic): Update.
	(info_symbol_command): Update.
	* psymtab.c (psymbol_name_matches): Update.
	(match_partial_symbol): Update.
	(lookup_partial_symbol): Update.
	(print_partial_symbols): Update.
	(sort_pst_symbols): Update.
	(maintenance_check_psymtabs): Update.
	* python/py-framefilter.c (py_print_frame): Update.
	* python/python.c (gdbpy_rbreak): Update.
	* record-btrace.c (btrace_get_bfun_name): Update.
	(btrace_call_history): Update.
	* rs6000-tdep.c (rs6000_skip_main_prologue): Update.
	(rs6000_skip_trampoline_code): Update.
	* sol-thread.c (info_cb): Update.
	* stabsread.c (scan_file_globals): Update.
	* stack.c (find_frame_funname): Update.
	(info_frame_command_core): Update.
	* symmisc.c (dump_msymbols): Update.
	* symtab.c (symbol_natural_name): Rename to..,
	(general_symbol_info::natural_name): ...this.
	(symbol_demangled_name): Rename to...
	(general_symbol_info::demangled_name): ...this.
	(symbol_search_name): Rename to...
	(general_symbol_info::search_name): ...this.
	(symbol_matches_search_name): Update.
	(find_pc_sect_line): Update.
	(skip_prologue_sal): Update.
	(search_symbols): Update.
	(print_msymbol_info): Update.
	(rbreak_command): Update.
	(completion_list_add_msymbol): Update.
	(completion_list_objc_symbol): Update.
	(get_msymbol_address): Update.
	* symtab.h (struct general_symbol_info): Add member functions
	natural_name (), linkage_name (), print_name (), demangled_name (),
	and search_name ().
	(SYMBOL_NATURAL_NAME): Update.
	(symbol_natural_name): Move to a member function on general_symbol_info.
	(SYMBOL_DEMANGLED_NAME): Update.
	(symbol_demangled_name): Move to a member function on
	general_symbol_info.
	(SYMBOL_SEARCH_NAME): Update.
	(symbol_search_name): Move to a member function on general_symbol_info.
	(MSYMBOL_NATURAL_NAME): Remove.
	(MSYMBOL_LINKAGE_NAME): Remove.
	(MSYMBOL_PRINT_NAME): Remove.
	(MSYMBOL_DEMANGLED_NAME): Remove.
	(MSYMBOL_SEARCH_NAME): Remove.
	* x86-tdep.c (x86_in_indirect_branch_thunk): Update.

Change-Id: I65aa529843a9903e174ce799037e41f954a9fcee
 2019-11-22 12:05:14 -06:00
Luis Machado
bd5766ec68 [ARM, thumb] Fix disassembling bug after reloading a symbol file 
The speed optimization from commit 5f6cac4085
made GDB skip reloading all symbols when the same symbol file is reloaded.

As a result, ARM targets only read the mapping symbols the first time we
load a symbol file. When reloaded, the speed optimization above will
cause an early return and gdbarch_record_special_symbol won't be called to
save mapping symbol data, which in turn affects disassembling of thumb
instructions.

First load and correct disassemble output:

Dump of assembler code for function main:
    0x0000821c <+0>:     bx      pc
    0x0000821e <+2>:     nop
    0x00008220 <+4>:     mov     r0, #0
    0x00008224 <+8>:     bx      lr

Second load and incorrect disassemble output:

Dump of assembler code for function main:
    0x0000821c <+0>:     bx      pc
    0x0000821e <+2>:     nop
    0x00008220 <+4>:     movs    r0, r0
    0x00008222 <+6>:     b.n     0x8966
    0x00008224 <+8>:     vrhadd.u16      d14, d14, d31

This happens because the mapping symbol data is stored in an objfile_key-based
container, and that data isn't preserved across the two symbol loading
operations.

The following patch fixes this by storing the mapping symbol data in a
bfd_key-based container, which doesn't change as long as the bfd is the same.

I've also added a new test to verify the correct disassemble output.

gdb/ChangeLog:

2019-11-01  Luis Machado  <luis.machado@linaro.org>

	PR gdb/25124

	* arm-tdep.c (arm_per_objfile): Rename to ...
	(arm_per_bfd): ... this.
	(arm_objfile_data_key): Rename to ...
	(arm_bfd_data_key): ... this.
	(arm_find_mapping_symbol): Adjust access to new bfd_key-based
	data.
	(arm_record_special_symbol): Likewise.

gdb/testsuite/ChangeLog:

2019-11-01  Luis Machado  <luis.machado@linaro.org>

	PR gdb/25124

	* gdb.arch/pr25124.S: New file.
	* gdb.arch/pr25124.exp: New file.

Change-Id: I22c3e6ebe9bfedad66d56fe9656994fa1761c485
 2019-11-01 10:11:17 -03:00
Luis Machado
a2726d4ff8 [ARM] Store exception handling information per-bfd instead of per-objfile 
Based on feedback from Tromey, update the use of objfile_key in gdb/arm-tdep.c
to use bfd_key instead. That way we don't have to re-create the exception
handling data all over again if it was done before for the same BFD.

gdb/ChangeLog:

2019-10-31  Luis Machado  <luis.machado@linaro.org>

	* arm-tdep.c (arm_exidx_data_key): Use bfd_key instead of
	objfile_key.
	(arm_exidx_new_objfile): Adjust to use objfile->obfd instead of
	objfile to fetch per-bfd data.
	(arm_find_exidx_entry): Likewise.

Change-Id: Ia7b3208ea8d788414600fa6d770ac76db0562859
 2019-10-31 16:30:44 -03:00
Tom de Vries
85102364b2 [gdb] Fix more typos in comments 
Fix typos in comments.  NFC.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-18  Tom de Vries  <tdevries@suse.de>

	* aarch64-tdep.c: Fix typos in comments.
	* ada-lang.c: Same.
	* ada-tasks.c: Same.
	* alpha-tdep.c: Same.
	* alpha-tdep.h: Same.
	* amd64-nat.c: Same.
	* amd64-windows-tdep.c: Same.
	* arc-tdep.c: Same.
	* arc-tdep.h: Same.
	* arch-utils.c: Same.
	* arm-nbsd-tdep.c: Same.
	* arm-tdep.c: Same.
	* ax-gdb.c: Same.
	* blockframe.c: Same.
	* btrace.c: Same.
	* c-varobj.c: Same.
	* coff-pe-read.c: Same.
	* coffread.c: Same.
	* cris-tdep.c: Same.
	* darwin-nat.c: Same.
	* dbxread.c: Same.
	* dcache.c: Same.
	* disasm.c: Same.
	* dtrace-probe.c: Same.
	* dwarf-index-write.c: Same.
	* dwarf2-frame-tailcall.c: Same.
	* dwarf2-frame.c: Same.
	* dwarf2read.c: Same.
	* eval.c: Same.
	* exceptions.c: Same.
	* fbsd-tdep.c: Same.
	* findvar.c: Same.
	* frame.c: Same.
	* frv-tdep.c: Same.
	* gnu-v3-abi.c: Same.
	* go32-nat.c: Same.
	* h8300-tdep.c: Same.
	* hppa-tdep.c: Same.
	* i386-linux-tdep.c: Same.
	* i386-tdep.c: Same.
	* ia64-libunwind-tdep.c: Same.
	* ia64-tdep.c: Same.
	* infcmd.c: Same.
	* infrun.c: Same.
	* linespec.c: Same.
	* linux-nat.c: Same.
	* linux-thread-db.c: Same.
	* machoread.c: Same.
	* mdebugread.c: Same.
	* mep-tdep.c: Same.
	* mn10300-tdep.c: Same.
	* namespace.c: Same.
	* objfiles.c: Same.
	* opencl-lang.c: Same.
	* or1k-tdep.c: Same.
	* osabi.c: Same.
	* ppc-linux-nat.c: Same.
	* ppc-linux-tdep.c: Same.
	* ppc-sysv-tdep.c: Same.
	* printcmd.c: Same.
	* procfs.c: Same.
	* record-btrace.c: Same.
	* record-full.c: Same.
	* remote-fileio.c: Same.
	* remote.c: Same.
	* rs6000-tdep.c: Same.
	* s12z-tdep.c: Same.
	* score-tdep.c: Same.
	* ser-base.c: Same.
	* ser-go32.c: Same.
	* skip.c: Same.
	* sol-thread.c: Same.
	* solib-svr4.c: Same.
	* solib.c: Same.
	* source.c: Same.
	* sparc-nat.c: Same.
	* sparc-sol2-tdep.c: Same.
	* sparc-tdep.c: Same.
	* sparc64-tdep.c: Same.
	* stabsread.c: Same.
	* stack.c: Same.
	* symfile.c: Same.
	* symtab.c: Same.
	* target-descriptions.c: Same.
	* target-float.c: Same.
	* thread.c: Same.
	* utils.c: Same.
	* valops.c: Same.
	* valprint.c: Same.
	* value.c: Same.
	* varobj.c: Same.
	* windows-nat.c: Same.
	* xcoffread.c: Same.
	* xstormy16-tdep.c: Same.
	* xtensa-tdep.c: Same.

Change-Id: I5175f1b107bfa4e1cdd4a3361ccb4739e53c75c4
 2019-10-18 02:48:08 +02:00
Tom de Vries
405feb71d4 [gdb] Fix typos in comments 
Fix typos in comments.  NFC.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-17  Tom de Vries  <tdevries@suse.de>

	* arm-nbsd-nat.c: Fix typos in comments.
	* arm-tdep.c: Same.
	* darwin-nat-info.c: Same.
	* dwarf2read.c: Same.
	* elfread.c: Same.
	* event-top.c: Same.
	* findvar.c: Same.
	* gdbtypes.c: Same.
	* hppa-tdep.c: Same.
	* i386-tdep.c: Same.
	* jit.c: Same.
	* main.c: Same.
	* mdebugread.c: Same.
	* moxie-tdep.c: Same.
	* nto-procfs.c: Same.
	* osabi.c: Same.
	* ppc-linux-tdep.c: Same.
	* remote.c: Same.
	* riscv-tdep.c: Same.
	* s390-tdep.c: Same.
	* sh-tdep.c: Same.
	* sparc-linux-tdep.c: Same.
	* sparc-nat.c: Same.
	* stack.c: Same.
	* target-descriptions.c: Same.
	* top.c: Same.
	* varobj.c: Same.

Change-Id: I6047967abd2d51c9000dea15184d19f4e952c3ff
 2019-10-17 18:06:36 +02:00
Andrew Burgess
0dc327459b gdb: Remove vec.{c,h} and update code to not include vec.h 
Removes vec.c and vec.h from the source tree, and remove all the
remaining includes of vec.h.  There should be no user visible changes
after this commit.

I did have a few issues rebuilding GDB after applying this patch due
to cached dependencies, I found that running this command in the build
directory resolved my build issues without requiring a 'make clean':

    rm -fr gdb/gdbserver/gdbsupport/.deps/

gdb/ChangeLog:

	* Makefile.in: Remove references to vec.h and vec.c.
	* aarch64-tdep.c: No longer include vec.h.
	* ada-lang.c: Likewise.
	* ada-lang.h: Likewise.
	* arm-tdep.c: Likewise.
	* ax.h: Likewise.
	* breakpoint.h: Likewise.
	* charset.c: Likewise.
	* cp-support.h: Likewise.
	* dtrace-probe.c: Likewise.
	* dwarf2read.c: Likewise.
	* extension.h: Likewise.
	* gdb_bfd.c: Likewise.
	* gdbsupport/gdb_vecs.h: Likewise.
	* gdbsupport/vec.c: Remove.
	* gdbsupport/vec.h: Remove.
	* gdbthread.h: Likewise.
	* guile/scm-type.c: Likewise.
	* inline-frame.c: Likewise.
	* machoread.c: Likewise.
	* memattr.c: Likewise.
	* memrange.h: Likewise.
	* namespace.h: Likewise.
	* nat/linux-btrace.h: Likewise.
	* osdata.c: Likewise.
	* parser-defs.h: Likewise.
	* progspace.h: Likewise.
	* python/py-type.c: Likewise.
	* record-btrace.c: Likewise.
	* rust-exp.y: Likewise.
	* solib-target.c: Likewise.
	* stap-probe.c: Likewise.
	* target-descriptions.c: Likewise.
	* target-memory.c: Likewise.
	* target.h: Likewise.
	* varobj.c: Likewise.
	* varobj.h: Likewise.
	* xml-support.h: Likewise.

gdb/gdbserver/ChangeLog:

	* Makefile.in: Remove references to vec.c.

Change-Id: I0c91d7170bf1b5e992a387fcd9fe4f2abe343bb5
 2019-10-15 21:31:55 +01:00
Christian Biesinger
c7ae7675cf Move arm_apcs_32 extern declaration to header 
Instead of having several extern declarations for arm_apcs_32
in a few .c files, declare it in arm-tdep.h. This file is already
included from these .c files.

gdb/ChangeLog:

2019-09-19  Christian Biesinger  <cbiesinger@google.com>

	* arm-linux-nat.c: Remove extern declaration for arm_apcs_32.
	* arm-linux-tdep.c: Likewise.
	* arm-nbsd-nat.c: Likewise.
	* arm-tdep.h: Declare arm_apcs_32.
 2019-09-20 09:17:49 +09:00
Alan Modra
fd3619828e bfd_section_* macros 
This large patch removes the unnecessary bfd parameter from various
bfd section macros and functions.  The bfd is hardly ever used and if
needed for the bfd_set_section_* or bfd_rename_section functions can
be found via section->owner except for the com, und, abs, and ind
std_section special sections.  Those sections shouldn't be modified
anyway.

The patch also removes various bfd_get_section_<field> macros,
replacing their use with bfd_section_<field>, and adds
bfd_set_section_lma.  I've also fixed a minor bug in gas where
compressed section renaming was done directly rather than calling
bfd_rename_section.  This would have broken bfd_get_section_by_name
and similar functions, but that hardly mattered at such a late stage
in gas processing.

bfd/
	* bfd-in.h (bfd_get_section_name, bfd_get_section_vma),
	(bfd_get_section_lma, bfd_get_section_alignment),
	(bfd_get_section_size, bfd_get_section_flags),
	(bfd_get_section_userdata): Delete.
	(bfd_section_name, bfd_section_size, bfd_section_vma),
	(bfd_section_lma, bfd_section_alignment): Lose bfd parameter.
	(bfd_section_flags, bfd_section_userdata): New.
	(bfd_is_com_section): Rename parameter.
	* section.c (bfd_set_section_userdata, bfd_set_section_vma),
	(bfd_set_section_alignment, bfd_set_section_flags, bfd_rename_section),
	(bfd_set_section_size): Delete bfd parameter, rename section parameter.
	(bfd_set_section_lma): New.
	* bfd-in2.h: Regenerate.
	* mach-o.c (bfd_mach_o_init_section_from_mach_o): Delete bfd param,
	update callers.
	* aoutx.h, * bfd.c, * coff-alpha.c, * coff-arm.c, * coff-mips.c,
	* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
	* compress.c, * ecoff.c, * elf-eh-frame.c, * elf-hppa.h,
	* elf-ifunc.c, * elf-m10200.c, * elf-m10300.c, * elf-properties.c,
	* elf-s390-common.c, * elf-vxworks.c, * elf.c, * elf32-arc.c,
	* elf32-arm.c, * elf32-avr.c, * elf32-bfin.c, * elf32-cr16.c,
	* elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c, * elf32-csky.c,
	* elf32-d10v.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c,
	* elf32-ft32.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c,
	* elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c, * elf32-m32c.c,
	* elf32-m32r.c, * elf32-m68hc1x.c, * elf32-m68k.c, * elf32-mcore.c,
	* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c,
	* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
	* elf32-nios2.c, * elf32-or1k.c, * elf32-ppc.c, * elf32-pru.c,
	* elf32-rl78.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c,
	* elf32-score7.c, * elf32-sh.c, * elf32-spu.c, * elf32-tic6x.c,
	* elf32-tilepro.c, * elf32-v850.c, * elf32-vax.c, * elf32-visium.c,
	* elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
	* elf64-bpf.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mmix.c,
	* elf64-ppc.c, * elf64-s390.c, * elf64-sparc.c, * elf64-x86-64.c,
	* elflink.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c,
	* elfxx-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c,
	* elfxx-tilegx.c, * elfxx-x86.c, * i386msdos.c, * linker.c,
	* mach-o.c, * mmo.c, * opncls.c, * pdp11.c, * pei-x86_64.c,
	* peicode.h, * reloc.c, * section.c, * syms.c, * vms-alpha.c,
	* xcofflink.c: Update throughout for bfd section macro and function
	changes.
binutils/
	* addr2line.c, * bucomm.c, * coffgrok.c, * dlltool.c, * nm.c,
	* objcopy.c, * objdump.c, * od-elf32_avr.c, * od-macho.c,
	* od-xcoff.c, * prdbg.c, * rdcoff.c, * rddbg.c, * rescoff.c,
	* resres.c, * size.c, * srconv.c, * strings.c, * windmc.c: Update
	throughout for bfd section macro and function changes.
gas/
	* as.c, * as.h, * dw2gencfi.c, * dwarf2dbg.c, * ecoff.c,
	* read.c, * stabs.c, * subsegs.c, * subsegs.h, * write.c,
	* config/obj-coff-seh.c, * config/obj-coff.c, * config/obj-ecoff.c,
	* config/obj-elf.c, * config/obj-macho.c, * config/obj-som.c,
	* config/tc-aarch64.c, * config/tc-alpha.c, * config/tc-arc.c,
	* config/tc-arm.c, * config/tc-avr.c, * config/tc-bfin.c,
	* config/tc-bpf.c, * config/tc-d10v.c, * config/tc-d30v.c,
	* config/tc-epiphany.c, * config/tc-fr30.c, * config/tc-frv.c,
	* config/tc-h8300.c, * config/tc-hppa.c, * config/tc-i386.c,
	* config/tc-ia64.c, * config/tc-ip2k.c, * config/tc-iq2000.c,
	* config/tc-lm32.c, * config/tc-m32c.c, * config/tc-m32r.c,
	* config/tc-m68hc11.c, * config/tc-mep.c, * config/tc-microblaze.c,
	* config/tc-mips.c, * config/tc-mmix.c, * config/tc-mn10200.c,
	* config/tc-mn10300.c, * config/tc-msp430.c, * config/tc-mt.c,
	* config/tc-nds32.c, * config/tc-or1k.c, * config/tc-ppc.c,
	* config/tc-pru.c, * config/tc-rl78.c, * config/tc-rx.c,
	* config/tc-s12z.c, * config/tc-s390.c, * config/tc-score.c,
	* config/tc-score7.c, * config/tc-sh.c, * config/tc-sparc.c,
	* config/tc-spu.c, * config/tc-tic4x.c, * config/tc-tic54x.c,
	* config/tc-tic6x.c, * config/tc-tilegx.c, * config/tc-tilepro.c,
	* config/tc-v850.c, * config/tc-visium.c, * config/tc-wasm32.c,
	* config/tc-xc16x.c, * config/tc-xgate.c, * config/tc-xstormy16.c,
	* config/tc-xtensa.c, * config/tc-z8k.c: Update throughout for
	bfd section macro and function changes.
	* write.c (compress_debug): Use bfd_rename_section.
gdb/
	* aarch64-linux-tdep.c, * arm-tdep.c, * auto-load.c,
	* coff-pe-read.c, * coffread.c, * corelow.c, * dbxread.c,
	* dicos-tdep.c, * dwarf2-frame.c, * dwarf2read.c, * elfread.c,
	* exec.c, * fbsd-tdep.c, * gcore.c, * gdb_bfd.c, * gdb_bfd.h,
	* hppa-tdep.c, * i386-cygwin-tdep.c, * i386-fbsd-tdep.c,
	* i386-linux-tdep.c, * jit.c, * linux-tdep.c, * machoread.c,
	* maint.c, * mdebugread.c, * minidebug.c, * mips-linux-tdep.c,
	* mips-sde-tdep.c, * mips-tdep.c, * mipsread.c, * nto-tdep.c,
	* objfiles.c, * objfiles.h, * osabi.c, * ppc-linux-tdep.c,
	* ppc64-tdep.c, * record-btrace.c, * record-full.c, * remote.c,
	* rs6000-aix-tdep.c, * rs6000-tdep.c, * s390-linux-tdep.c,
	* s390-tdep.c, * solib-aix.c, * solib-dsbt.c, * solib-frv.c,
	* solib-spu.c, * solib-svr4.c, * solib-target.c,
	* spu-linux-nat.c, * spu-tdep.c, * symfile-mem.c, * symfile.c,
	* symmisc.c, * symtab.c, * target.c, * windows-nat.c,
	* xcoffread.c, * cli/cli-dump.c, * compile/compile-object-load.c,
	* mi/mi-interp.c: Update throughout for bfd section macro and
	function changes.
	* gcore (gcore_create_callback): Use bfd_set_section_lma.
	* spu-tdep.c (spu_overlay_new_objfile): Likewise.
gprof/
	* corefile.c, * symtab.c: Update throughout for bfd section
	macro and function changes.
ld/
	* ldcref.c, * ldctor.c, * ldelf.c, * ldlang.c, * pe-dll.c,
	* emultempl/aarch64elf.em, * emultempl/aix.em,
	* emultempl/armcoff.em, * emultempl/armelf.em,
	* emultempl/cr16elf.em, * emultempl/cskyelf.em,
	* emultempl/m68hc1xelf.em, * emultempl/m68kelf.em,
	* emultempl/mipself.em, * emultempl/mmix-elfnmmo.em,
	* emultempl/mmo.em, * emultempl/msp430.em,
	* emultempl/nios2elf.em, * emultempl/pe.em, * emultempl/pep.em,
	* emultempl/ppc64elf.em, * emultempl/xtensaelf.em: Update
	throughout for bfd section macro and function changes.
libctf/
	* ctf-open-bfd.c: Update throughout for bfd section macro changes.
opcodes/
	* arc-ext.c: Update throughout for bfd section macro changes.
sim/
	* common/sim-load.c, * common/sim-utils.c, * cris/sim-if.c,
	* erc32/func.c, * lm32/sim-if.c, * m32c/load.c, * m32c/trace.c,
	* m68hc11/interp.c, * ppc/hw_htab.c, * ppc/hw_init.c,
	* rl78/load.c, * rl78/trace.c, * rx/gdb-if.c, * rx/load.c,
	* rx/trace.c: Update throughout for bfd section macro changes.
 2019-09-19 09:40:13 +09:30
Alan Modra
e6f7f6d14f bfd_asymbol_* macros 
The main point of this patch is to give bfd_get_section a better name,
bfd_asymbol_section.

bfd/
	* bfd-in.h (bfd_asymbol_section): Rename from bfd_get_section.
	(bfd_get_output_section): Delete.
	(bfd_asymbol_base): Delete.
	(bfd_asymbol_section, bfd_asymbol_value, bfd_asymbol_name),
	(bfd_asymbol_bfd, bfd_asymbol_flavour): Tidy.
	(bfd_set_asymbol_name): New macro.
	* bfd-in2.h: Regenerate.
	* aout-cris.c: Update throughout to use bfd_asymbol_section.
	* aoutx.h: Likewise.
	* cofflink.c: Likewise.
	* dwarf2.c: Likewise.
	* ecoff.c: Likewise.
	* elf.c: Likewise.
	* elf32-arm.c: Likewise.
	* elf32-mips.c: Likewise.
	* elf32-score.c: Likewise.
	* elf32-score7.c: Likewise.
	* elfn32-mips.c: Likewise.
	* elfnn-aarch64.c: Likewise.
	* elfxx-mips.c: Likewise.
	* linker.c: Likewise.
	* pdp11.c: Likewise.
	* elf64-mmix.c (mmix_elf_reloc): Expand bfd_get_output_section.
binutils/
	* nm.c: Update bfd_get_section to bfd_asymbol_section throughout.
	* objcopy.c: Likewise.
	* objdump.c: Likewise.
	* rdcoff.c: Likewise.
	* objcopy.c (create_new_symbol): Use bfd_set_asymbol_name.
	(filter_symbols): Likewise.
gas/
	* symbols.c (S_IS_LOCAL): Update bfd_get_section to
	bfd_asymbol_section.
gdb/
	* arm-tdep.c (arm_record_special_symbol): Update bfd_get_section
	to bfd_asymbol_section.
ld/
	* ldcref.c (check_reloc_refs): Update bfd_get_section to
	bfd_asymbol_section.
 2019-09-18 23:07:31 +09:30
Christian Biesinger
491144b5e2 Change boolean options to bool instead of int 
This is for add_setshow_boolean_cmd as well as the gdb::option interface.

gdb/ChangeLog:

2019-09-17  Christian Biesinger  <cbiesinger@google.com>

	* ada-lang.c (ada_ignore_descriptive_types_p): Change to bool.
	(print_signatures): Likewise.
	(trust_pad_over_xvs): Likewise.
	* arch/aarch64-insn.c (aarch64_debug): Likewise.
	* arch/aarch64-insn.h (aarch64_debug): Likewise.
	* arm-linux-nat.c (arm_apcs_32): Likewise.
	* arm-linux-tdep.c (arm_apcs_32): Likewise.
	* arm-nbsd-nat.c (arm_apcs_32): Likewise.
	* arm-tdep.c (arm_debug): Likewise.
	(arm_apcs_32): Likewise.
	* auto-load.c (debug_auto_load): Likewise.
	(auto_load_gdb_scripts): Likewise.
	(global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* auto-load.h (global_auto_load): Likewise.
	(auto_load_local_gdbinit): Likewise.
	(auto_load_local_gdbinit_loaded): Likewise.
	* breakpoint.c (disconnected_dprintf): Likewise.
	(breakpoint_proceeded): Likewise.
	(automatic_hardware_breakpoints): Likewise.
	(always_inserted_mode): Likewise.
	(target_exact_watchpoints): Likewise.
	(_initialize_breakpoint): Update.
	* breakpoint.h (target_exact_watchpoints): Change to bool.
	* btrace.c (maint_btrace_pt_skip_pad): Likewise.
	* cli/cli-cmds.c (trace_commands): Likewise.
	* cli/cli-cmds.h (trace_commands): Likewise.
	* cli/cli-decode.c (add_setshow_boolean_cmd): Change int* argument
	to bool*.
	* cli/cli-logging.c (logging_overwrite): Change to bool.
	(logging_redirect): Likewise.
	(debug_redirect): Likewise.
	* cli/cli-option.h (option_def) <boolean>: Change return type to bool*.
	(struct boolean_option_def) <get_var_address_cb_>: Change return type
	to bool.
	<boolean_option_def>: Update.
	(struct flag_option_def): Change default type of Context to bool
	from int.
	<flag_option_def>: Change return type of var_address_cb_ to bool*.
	* cli/cli-setshow.c (do_set_command): Cast to bool* instead of int*.
	(get_setshow_command_value_string): Likewise.
	* cli/cli-style.c (cli_styling): Change to bool.
	(source_styling): Likewise.
	* cli/cli-style.h (source_styling): Likewise.
	(cli_styling): Likewise.
	* cli/cli-utils.h (struct qcs_flags) <quiet, cont, silent>: Change
	to bool.
	* command.h (var_types): Update comment.
	(add_setshow_boolean_cmd): Change int* var argument to bool*.
	* compile/compile-cplus-types.c (debug_compile_cplus_types): Change to
	bool.
	(debug_compile_cplus_scopes): Likewise.
	* compile/compile-internal.h (compile_debug): Likewise.
	* compile/compile.c (compile_debug): Likewise.
	(struct compile_options) <raw>: Likewise.
	* cp-support.c (catch_demangler_crashes): Likewise.
	* cris-tdep.c (usr_cmd_cris_version_valid): Likewise.
	(usr_cmd_cris_dwarf2_cfi): Likewise.
	* csky-tdep.c (csky_debug): Likewise.
	* darwin-nat.c (enable_mach_exceptions): Likewise.
	* dcache.c (dcache_enabled_p): Likewise.
	* defs.h (info_verbose): Likewise.
	* demangle.c (demangle): Likewise.
	(asm_demangle): Likewise.
	* dwarf-index-cache.c (debug_index_cache): Likewise.
	* dwarf2-frame.c (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Likewise.
	* dwarf2read.c (check_physname): Likewise.
	(use_deprecated_index_sections): Likewise.
	(dwarf_always_disassemble): Likewise.
	* eval.c (overload_resolution): Likewise.
	* event-top.c (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* event-top.h (set_editing_cmd_var): Likewise.
	(exec_done_display_p): Likewise.
	* exec.c (write_files): Likewise.
	* fbsd-nat.c (debug_fbsd_lwp): Likewise
	(debug_fbsd_nat): Likewise.
	* frame.h (struct frame_print_options) <print_raw_frame_arguments>:
	Likewise.
	(struct set_backtrace_options) <backtrace_past_main>: Likewise.
	<backtrace_past_entry> Likewise.
	* gdb-demangle.h (demangle): Likewise.
	(asm_demangle): Likewise.
	* gdb_bfd.c (bfd_sharing): Likewise.
	* gdbcore.h (write_files): Likewise.
	* gdbsupport/common-debug.c (show_debug_regs): Likewise.
	* gdbsupport/common-debug.h (show_debug_regs): Likewise.
	* gdbthread.h (print_thread_events): Likewise.
	* gdbtypes.c (opaque_type_resolution): Likewise.
	(strict_type_checking): Likewise.
	* gnu-nat.c (gnu_debug_flag): Likewise.
	* guile/scm-auto-load.c (auto_load_guile_scripts): Likewise.
	* guile/scm-param.c (pascm_variable): Add boolval.
	(add_setshow_generic): Update.
	(pascm_param_value): Update.
	(pascm_set_param_value_x): Update.
	* hppa-tdep.c (hppa_debug): Change to bool..
	* infcall.c (may_call_functions_p): Likewise.
	(coerce_float_to_double_p): Likewise.
	(unwind_on_signal_p): Likewise.
	(unwind_on_terminating_exception_p): Likewise.
	* infcmd.c (startup_with_shell): Likewise.
	* inferior.c (print_inferior_events): Likewise.
	* inferior.h (startup_with_shell): Likewise.
	(print_inferior_events): Likewise.
	* infrun.c (step_stop_if_no_debug): Likewise.
	(detach_fork): Likewise.
	(debug_displaced): Likewise.
	(disable_randomization): Likewise.
	(non_stop): Likewise.
	(non_stop_1): Likewise.
	(observer_mode): Likewise.
	(observer_mode_1): Likewise.
	(set_observer_mode): Update.
	(sched_multi): Change to bool.
	* infrun.h (debug_displaced): Likewise.
	(sched_multi): Likewise.
	(step_stop_if_no_debug): Likewise.
	(non_stop): Likewise.
	(disable_randomization): Likewise.
	* linux-tdep.c (use_coredump_filter): Likewise.
	(dump_excluded_mappings): Likewise.
	* linux-thread-db.c (auto_load_thread_db): Likewise.
	(check_thread_db_on_load): Likewise.
	* main.c (captured_main_1): Update.
	* maint-test-options.c (struct test_options_opts) <flag_opt, xx1_opt,
	xx2_opt, boolean_opt>: Change to bool.
	* maint-test-settings.c (maintenance_test_settings_boolean): Likewise.
	* maint.c (maintenance_profile_p): Likewise.
	(per_command_time): Likewise.
	(per_command_space): Likewise.
	(per_command_symtab): Likewise.
	* memattr.c (inaccessible_by_default): Likewise.
	* mi/mi-main.c (mi_async): Likewise.
	(mi_async_1): Likewise.
	* mips-tdep.c (mips64_transfers_32bit_regs_p): Likewise.
	* nat/fork-inferior.h (startup_with_shell): Likewise.
	* nat/linux-namespaces.c (debug_linux_namespaces): Likewise.
	* nat/linux-namespaces.h (debug_linux_namespaces): Likewise.
	* nios2-tdep.c (nios2_debug): Likewise.
	* or1k-tdep.c (or1k_debug): Likewise.
	* parse.c (parser_debug): Likewise.
	* parser-defs.h (parser_debug): Likewise.
	* printcmd.c (print_symbol_filename): Likewise.
	* proc-api.c (procfs_trace): Likewise.
	* python/py-auto-load.c (auto_load_python_scripts): Likewise.
	* python/py-param.c (union parmpy_variable): Add "bool boolval" field.
	(set_parameter_value): Update.
	(add_setshow_generic): Update.
	* python/py-value.c (copy_py_bool_obj): Change argument from int*
	to bool*.
	* python/python.c (gdbpy_parameter_value): Cast to bool* instead of
	int*.
	* ravenscar-thread.c (ravenscar_task_support): Change to bool.
	* record-btrace.c (record_btrace_target::store_registers): Update.
	* record-full.c (record_full_memory_query): Change to bool.
	(record_full_stop_at_limit): Likewise.
	* record-full.h (record_full_memory_query): Likewise.
	* remote-notif.c (notif_debug): Likewise.
	* remote-notif.h (notif_debug): Likewise.
	* remote.c (use_range_stepping): Likewise.
	(interrupt_on_connect): Likewise.
	(remote_break): Likewise.
	* ser-tcp.c (tcp_auto_retry): Likewise.
	* ser-unix.c (serial_hwflow): Likewise.
	* skip.c (debug_skip): Likewise.
	* solib-aix.c (solib_aix_debug): Likewise.
	* spu-tdep.c (spu_stop_on_load_p): Likewise.
	(spu_auto_flush_cache_p): Likewise.
	* stack.c (struct backtrace_cmd_options) <full, no_filters, hide>:
	Likewise.
	(struct info_print_options) <quiet>: Likewise.
	* symfile-debug.c (debug_symfile): Likewise.
	* symfile.c (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symfile.h (auto_solib_add): Likewise.
	(separate_debug_file_debug): Likewise.
	* symtab.c (basenames_may_differ): Likewise.
	(struct filename_partial_match_opts) <dirname, basename>: Likewise.
	(struct info_print_options) <quiet, exclude_minsyms>: Likewise.
	(struct info_types_options) <quiet>: Likewise.
	* symtab.h (demangle): Likewise.
	(basenames_may_differ): Likewise.
	* target-dcache.c (stack_cache_enabled_1): Likewise.
	(code_cache_enabled_1): Likewise.
	* target.c (trust_readonly): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	(auto_connect_native_target): Likewise.
	(target_stop_and_wait): Update.
	(target_async_permitted): Change to bool.
	(target_async_permitted_1): Likewise.
	(may_write_registers_1): Likewise.
	(may_write_memory_1): Likewise.
	(may_insert_breakpoints_1): Likewise.
	(may_insert_tracepoints_1): Likewise.
	(may_insert_fast_tracepoints_1): Likewise.
	(may_stop_1): Likewise.
	* target.h (target_async_permitted): Likewise.
	(may_write_registers): Likewise.
	(may_write_memory): Likewise.
	(may_insert_breakpoints): Likewise.
	(may_insert_tracepoints): Likewise.
	(may_insert_fast_tracepoints): Likewise.
	(may_stop): Likewise.
	* thread.c (struct info_threads_opts) <show_global_ids>: Likewise.
	(make_thread_apply_all_options_def_group): Change argument from int*
	to bool*.
	(thread_apply_all_command): Update.
	(print_thread_events): Change to bool.
	* top.c (confirm): Likewise.
	(command_editing_p): Likewise.
	(history_expansion_p): Likewise.
	(write_history_p): Likewise.
	(info_verbose): Likewise.
	* top.h (confirm): Likewise.
	(history_expansion_p): Likewise.
	* tracepoint.c (disconnected_tracing): Likewise.
	(circular_trace_buffer): Likewise.
	* typeprint.c (print_methods): Likewise.
	(print_typedefs): Likewise.
	* utils.c (debug_timestamp): Likewise.
	(sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* utils.h (sevenbit_strings): Likewise.
	(pagination_enabled): Likewise.
	* valops.c (overload_resolution): Likewise.
	* valprint.h (struct value_print_options) <prettyformat_arrays,
	prettyformat_structs, vtblprint, unionprint, addressprint, objectprint,
	stop_print_at_null, print_array_indexes, deref_ref, static_field_print,
	pascal_static_field_print, raw, summary, symbol_print, finish_print>:
	Likewise.
	* windows-nat.c (new_console): Likewise.
	(cygwin_exceptions): Likewise.
	(new_group): Likewise.
	(debug_exec): Likewise.
	(debug_events): Likewise.
	(debug_memory): Likewise.
	(debug_exceptions): Likewise.
	(useshell): Likewise.
	* windows-tdep.c (maint_display_all_tib): Likewise.
	* xml-support.c (debug_xml): Likewise.
 2019-09-18 09:35:12 +09:00
Srinath Parvathaneni
40eadf04ff [gdb][Arm]: gdb cannot step across CMSE secure entry function code. 
GDB is not able to execute "step" command on function calls of Armv8-M cmse secure entry functions.
Everytime GNU linker come across definition of any cmse secure entry function in object file(s),
it creates two new instructions secure gateway (sg) and original branch destination (b.w),
place those two instructions in ".gnu.sgstubs" section of executable.
Any function calls to these cmse secure entry functions is re-directed through secure gateway (sg)
present in ".gnu.sgstubs" section.

Example:
Following is a function call to cmse secure entry function "foo":
        ...
        bl xxxx <foo>   --->(a)
        ...
        <foo>
        xxxx: push    {r7, lr}

GNU linker on finding out "foo" is a cmse secure entry function, created sg and b.w instructions and
place them in ".gnu.sgstubs" section (marked by c).

The "bl" instruction (marked by a) which is a call to cmse secure entry function is modified by GNU linker
(as marked by b) and call flow is re-directly through secure gateway (sg) in ".gnu.sgstubs" section.
       ...
       bl yyyy <foo>  ---> (b)
       ...
       section .gnu.sgstubs: ---> (c)
       yyyy <foo>
       yyyy: sg   // secure gateway
	     b.w xxxx <__acle_se_foo>  // original_branch_dest
       ...
       0000xxxx <__acle_se_foo>
       xxxx: push    {r7, lr} ---> (d)

On invoking GDB, when the control is at "b" and we pass "step" command, the pc returns "yyyy"
(sg address) which is a trampoline and which does not exist in source code. So GDB jumps
to next line without jumping to "__acle_se_foo" (marked by d).

The above details are published on the Arm website [1], please refer to section 5.4 (Entry functions)
and section 3.4.4 (C level development flow of secure code).

[1] https://developer.arm.com/architectures/cpu-architecture/m-profile/docs/ecm0359818/latest/armv8-m-security-extensions-requirements-on-development-tools-engineering-specification

This patch fixes above problem by returning target pc "xxxx" to GDB on executing "step"
command at "b", so that the control jumps to "__acle_se_foo" (marked by d).

gdb/ChangeLog:

	* arm-tdep.c (arm_skip_cmse_entry): New function.
	(arm_is_sgstubs_section): New function.
	(arm_skip_stub): Add call to arm_skip_cmse_entry function.

gdb/testsuite/ChangeLog:

	* gdb.arch/arm-cmse-sgstubs.c: New test.
	* gdb.arch/arm-cmse-sgstubs.exp: New file.
 2019-07-23 12:06:05 +01:00