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Most allocation functions (if not all) return a void* pointing to the allocated memory. In C++, we need to add an explicit cast when assigning the result to a pointer to another type (which is the case more often than not). The content of this patch is taken from Pedro's branch, from commit "(mostly) auto-generated patch to insert casts needed for C++". I validated that the changes make sense and manually reflowed the code to make it respect the coding style. I also found multiple places where I could use XNEW/XNEWVEC/XRESIZEVEC/etc. Thanks a lot to whoever did that automated script to insert casts, doing it completely by hand would have taken a ridiculous amount of time. Only files built on x86 with --enable-targets=all are modified. This means that all other -nat.c files are untouched and will have to be dealt with later by using appropiate compilers. Or maybe we can try to build them with a regular g++ just to know where to add casts, I don't know. I built-tested this with --enable-targets=all and reg-tested. Here's the changelog entry, which was not too bad to make despite the size, thanks to David Malcom's script. I fixed some bits by hand, but there might be some wrong parts left (hopefully not). gdb/ChangeLog: * aarch64-linux-tdep.c (aarch64_stap_parse_special_token): Add cast to allocation result assignment. * ada-exp.y (write_object_renaming): Likewise. (write_ambiguous_var): Likewise. (ada_nget_field_index): Likewise. (write_var_or_type): Likewise. * ada-lang.c (ada_decode_symbol): Likewise. (ada_value_assign): Likewise. (value_pointer): Likewise. (cache_symbol): Likewise. (add_nonlocal_symbols): Likewise. (ada_name_for_lookup): Likewise. (symbol_completion_add): Likewise. (ada_to_fixed_type_1): Likewise. (ada_get_next_arg): Likewise. (defns_collected): Likewise. * ada-lex.l (processId): Likewise. (processString): Likewise. * ada-tasks.c (read_known_tasks_array): Likewise. (read_known_tasks_list): Likewise. * ada-typeprint.c (decoded_type_name): Likewise. * addrmap.c (addrmap_mutable_create_fixed): Likewise. * amd64-tdep.c (amd64_push_arguments): Likewise. (amd64_displaced_step_copy_insn): Likewise. (amd64_classify_insn_at): Likewise. (amd64_relocate_instruction): Likewise. * amd64obsd-tdep.c (amd64obsd_sigtramp_p): Likewise. * arch-utils.c (simple_displaced_step_copy_insn): Likewise. (initialize_current_architecture): Likewise. * arm-linux-tdep.c (arm_stap_parse_special_token): Likewise. * arm-symbian-tdep.c (arm_symbian_osabi_sniffer): Likewise. * arm-tdep.c (arm_exidx_new_objfile): Likewise. (arm_push_dummy_call): Likewise. (extend_buffer_earlier): Likewise. (arm_adjust_breakpoint_address): Likewise. (arm_skip_stub): Likewise. * auto-load.c (filename_is_in_pattern): Likewise. (maybe_add_script_file): Likewise. (maybe_add_script_text): Likewise. (auto_load_objfile_script_1): Likewise. * auxv.c (ld_so_xfer_auxv): Likewise. * ax-general.c (new_agent_expr): Likewise. (grow_expr): Likewise. (ax_reg_mask): Likewise. * bcache.c (bcache_full): Likewise. * breakpoint.c (program_breakpoint_here_p): Likewise. * btrace.c (parse_xml_raw): Likewise. * build-id.c (build_id_to_debug_bfd): Likewise. * buildsym.c (end_symtab_with_blockvector): Likewise. * c-exp.y (string_exp): Likewise. (qualified_name): Likewise. (write_destructor_name): Likewise. (operator_stoken): Likewise. (parse_number): Likewise. (scan_macro_expansion): Likewise. (yylex): Likewise. (c_print_token): Likewise. * c-lang.c (c_get_string): Likewise. (emit_numeric_character): Likewise. * charset.c (wchar_iterate): Likewise. * cli/cli-cmds.c (complete_command): Likewise. (make_command): Likewise. * cli/cli-dump.c (restore_section_callback): Likewise. (restore_binary_file): Likewise. * cli/cli-interp.c (cli_interpreter_exec): Likewise. * cli/cli-script.c (execute_control_command): Likewise. * cli/cli-setshow.c (do_set_command): Likewise. * coff-pe-read.c (add_pe_forwarded_sym): Likewise. (read_pe_exported_syms): Likewise. * coffread.c (coff_read_struct_type): Likewise. (coff_read_enum_type): Likewise. * common/btrace-common.c (btrace_data_append): Likewise. * common/buffer.c (buffer_grow): Likewise. * common/filestuff.c (gdb_fopen_cloexec): Likewise. * common/format.c (parse_format_string): Likewise. * common/gdb_vecs.c (delim_string_to_char_ptr_vec_append): Likewise. * common/xml-utils.c (xml_escape_text): Likewise. * compile/compile-object-load.c (copy_sections): Likewise. (compile_object_load): Likewise. * compile/compile-object-run.c (compile_object_run): Likewise. * completer.c (filename_completer): Likewise. * corefile.c (read_memory_typed_address): Likewise. (write_memory_unsigned_integer): Likewise. (write_memory_signed_integer): Likewise. (complete_set_gnutarget): Likewise. * corelow.c (get_core_register_section): Likewise. * cp-name-parser.y (d_grab): Likewise. (allocate_info): Likewise. (cp_new_demangle_parse_info): Likewise. * cp-namespace.c (cp_scan_for_anonymous_namespaces): Likewise. (cp_lookup_symbol_in_namespace): Likewise. (lookup_namespace_scope): Likewise. (find_symbol_in_baseclass): Likewise. (cp_lookup_nested_symbol): Likewise. (cp_lookup_transparent_type_loop): Likewise. * cp-support.c (copy_string_to_obstack): Likewise. (make_symbol_overload_list): Likewise. (make_symbol_overload_list_namespace): Likewise. (make_symbol_overload_list_adl_namespace): Likewise. (first_component_command): Likewise. * cp-valprint.c (cp_print_value): Likewise. * ctf.c (ctf_xfer_partial): Likewise. * d-exp.y (StringExp): Likewise. * d-namespace.c (d_lookup_symbol_in_module): Likewise. (lookup_module_scope): Likewise. (find_symbol_in_baseclass): Likewise. (d_lookup_nested_symbol): Likewise. * dbxread.c (find_stab_function_addr): Likewise. (read_dbx_symtab): Likewise. (dbx_end_psymtab): Likewise. (cp_set_block_scope): Likewise. * dcache.c (dcache_alloc): Likewise. * demangle.c (_initialize_demangler): Likewise. * dicos-tdep.c (dicos_load_module_p): Likewise. * dictionary.c (dict_create_hashed_expandable): Likewise. (dict_create_linear_expandable): Likewise. (expand_hashtable): Likewise. (add_symbol_linear_expandable): Likewise. * dwarf2-frame.c (add_cie): Likewise. (add_fde): Likewise. (dwarf2_build_frame_info): Likewise. * dwarf2expr.c (dwarf_expr_grow_stack): Likewise. (dwarf_expr_fetch_address): Likewise. (add_piece): Likewise. (execute_stack_op): Likewise. * dwarf2loc.c (chain_candidate): Likewise. (dwarf_entry_parameter_to_value): Likewise. (read_pieced_value): Likewise. (write_pieced_value): Likewise. * dwarf2read.c (dwarf2_read_section): Likewise. (add_type_unit): Likewise. (read_comp_units_from_section): Likewise. (fixup_go_packaging): Likewise. (dwarf2_compute_name): Likewise. (dwarf2_physname): Likewise. (create_dwo_unit_in_dwp_v1): Likewise. (create_dwo_unit_in_dwp_v2): Likewise. (read_func_scope): Likewise. (read_call_site_scope): Likewise. (dwarf2_attach_fields_to_type): Likewise. (process_structure_scope): Likewise. (mark_common_block_symbol_computed): Likewise. (read_common_block): Likewise. (abbrev_table_read_table): Likewise. (guess_partial_die_structure_name): Likewise. (fixup_partial_die): Likewise. (add_file_name): Likewise. (dwarf2_const_value_data): Likewise. (dwarf2_const_value_attr): Likewise. (build_error_marker_type): Likewise. (guess_full_die_structure_name): Likewise. (anonymous_struct_prefix): Likewise. (typename_concat): Likewise. (dwarf2_canonicalize_name): Likewise. (dwarf2_name): Likewise. (write_constant_as_bytes): Likewise. (dwarf2_fetch_constant_bytes): Likewise. (copy_string): Likewise. (parse_macro_definition): Likewise. * elfread.c (elf_symfile_segments): Likewise. (elf_rel_plt_read): Likewise. (elf_gnu_ifunc_resolve_by_cache): Likewise. (elf_gnu_ifunc_resolve_by_got): Likewise. (elf_read_minimal_symbols): Likewise. (elf_gnu_ifunc_record_cache): Likewise. * event-top.c (top_level_prompt): Likewise. (command_line_handler): Likewise. * exec.c (resize_section_table): Likewise. * expprint.c (print_subexp_standard): Likewise. * fbsd-tdep.c (fbsd_collect_regset_section_cb): Likewise. * findcmd.c (parse_find_args): Likewise. * findvar.c (address_from_register): Likewise. * frame.c (get_prev_frame_always): Likewise. * gdb_bfd.c (gdb_bfd_ref): Likewise. (get_section_descriptor): Likewise. * gdb_obstack.c (obconcat): Likewise. (obstack_strdup): Likewise. * gdbtypes.c (lookup_function_type_with_arguments): Likewise. (create_set_type): Likewise. (lookup_unsigned_typename): Likewise. (lookup_signed_typename): Likewise. (resolve_dynamic_union): Likewise. (resolve_dynamic_struct): Likewise. (add_dyn_prop): Likewise. (copy_dynamic_prop_list): Likewise. (arch_flags_type): Likewise. (append_composite_type_field_raw): Likewise. * gdbtypes.h (INIT_FUNC_SPECIFIC): Likewise. * gnu-v3-abi.c (gnuv3_rtti_type): Likewise. * go-exp.y (string_exp): Likewise. * go-lang.c (go_demangle): Likewise. * guile/guile.c (compute_scheme_string): Likewise. * guile/scm-cmd.c (gdbscm_parse_command_name): Likewise. (gdbscm_canonicalize_command_name): Likewise. * guile/scm-ports.c (ioscm_init_stdio_buffers): Likewise. (ioscm_init_memory_port): Likewise. (ioscm_reinit_memory_port): Likewise. * guile/scm-utils.c (gdbscm_gc_xstrdup): Likewise. (gdbscm_gc_dup_argv): Likewise. * h8300-tdep.c (h8300_push_dummy_call): Likewise. * hppa-tdep.c (internalize_unwinds): Likewise. (read_unwind_info): Likewise. * i386-cygwin-tdep.c (core_process_module_section): Likewise. (windows_core_xfer_shared_libraries): Likewise. * i386-tdep.c (i386_displaced_step_copy_insn): Likewise. (i386_stap_parse_special_token_triplet): Likewise. (i386_stap_parse_special_token_three_arg_disp): Likewise. * i386obsd-tdep.c (i386obsd_sigtramp_p): Likewise. * inf-child.c (inf_child_fileio_readlink): Likewise. * inf-ptrace.c (inf_ptrace_fetch_register): Likewise. (inf_ptrace_store_register): Likewise. * infrun.c (follow_exec): Likewise. (displaced_step_prepare_throw): Likewise. (save_stop_context): Likewise. (save_infcall_suspend_state): Likewise. * jit.c (jit_read_descriptor): Likewise. (jit_read_code_entry): Likewise. (jit_symtab_line_mapping_add_impl): Likewise. (finalize_symtab): Likewise. (jit_unwind_reg_get_impl): Likewise. * jv-exp.y (QualifiedName): Likewise. * jv-lang.c (get_java_utf8_name): Likewise. (type_from_class): Likewise. (java_demangle_type_signature): Likewise. (java_class_name_from_physname): Likewise. * jv-typeprint.c (java_type_print_base): Likewise. * jv-valprint.c (java_value_print): Likewise. * language.c (add_language): Likewise. * linespec.c (add_sal_to_sals_basic): Likewise. (add_sal_to_sals): Likewise. (decode_objc): Likewise. (find_linespec_symbols): Likewise. * linux-fork.c (fork_save_infrun_state): Likewise. * linux-nat.c (linux_nat_detach): Likewise. (linux_nat_fileio_readlink): Likewise. * linux-record.c (record_linux_sockaddr): Likewise. (record_linux_msghdr): Likewise. (Do): Likewise. * linux-tdep.c (linux_core_info_proc_mappings): Likewise. (linux_collect_regset_section_cb): Likewise. (linux_get_siginfo_data): Likewise. * linux-thread-db.c (try_thread_db_load_from_pdir_1): Likewise. (try_thread_db_load_from_dir): Likewise. (thread_db_load_search): Likewise. (info_auto_load_libthread_db): Likewise. * m32c-tdep.c (m32c_m16c_address_to_pointer): Likewise. (m32c_m16c_pointer_to_address): Likewise. * m68hc11-tdep.c (m68hc11_pseudo_register_write): Likewise. * m68k-tdep.c (m68k_get_longjmp_target): Likewise. * machoread.c (macho_check_dsym): Likewise. * macroexp.c (resize_buffer): Likewise. (gather_arguments): Likewise. (maybe_expand): Likewise. * macrotab.c (new_macro_key): Likewise. (new_source_file): Likewise. (new_macro_definition): Likewise. * mdebugread.c (parse_symbol): Likewise. (parse_type): Likewise. (parse_partial_symbols): Likewise. (psymtab_to_symtab_1): Likewise. * mem-break.c (default_memory_insert_breakpoint): Likewise. * mi/mi-cmd-break.c (mi_argv_to_format): Likewise. * mi/mi-main.c (mi_cmd_data_read_memory): Likewise. (mi_cmd_data_read_memory_bytes): Likewise. (mi_cmd_data_write_memory_bytes): Likewise. (mi_cmd_trace_frame_collected): Likewise. * mi/mi-parse.c (mi_parse_argv): Likewise. (mi_parse): Likewise. * minidebug.c (lzma_open): Likewise. (lzma_pread): Likewise. * mips-tdep.c (mips_read_fp_register_single): Likewise. (mips_print_fp_register): Likewise. * mipsnbsd-tdep.c (mipsnbsd_get_longjmp_target): Likewise. * mipsread.c (read_alphacoff_dynamic_symtab): Likewise. * mt-tdep.c (mt_register_name): Likewise. (mt_registers_info): Likewise. (mt_push_dummy_call): Likewise. * namespace.c (add_using_directive): Likewise. * nat/linux-btrace.c (perf_event_read): Likewise. (linux_enable_bts): Likewise. * nat/linux-osdata.c (linux_common_core_of_thread): Likewise. * nat/linux-ptrace.c (linux_ptrace_test_ret_to_nx): Likewise. * nto-tdep.c (nto_find_and_open_solib): Likewise. (nto_parse_redirection): Likewise. * objc-lang.c (objc_demangle): Likewise. (find_methods): Likewise. * objfiles.c (get_objfile_bfd_data): Likewise. (set_objfile_main_name): Likewise. (allocate_objfile): Likewise. (objfile_relocate): Likewise. (update_section_map): Likewise. * osabi.c (generic_elf_osabi_sniff_abi_tag_sections): Likewise. * p-exp.y (exp): Likewise. (yylex): Likewise. * p-valprint.c (pascal_object_print_value): Likewise. * parse.c (initialize_expout): Likewise. (mark_completion_tag): Likewise. (copy_name): Likewise. (parse_float): Likewise. (type_stack_reserve): Likewise. * ppc-linux-tdep.c (ppc_stap_parse_special_token): Likewise. (ppu2spu_prev_register): Likewise. * ppc-ravenscar-thread.c (supply_register_at_address): Likewise. * printcmd.c (printf_wide_c_string): Likewise. (printf_pointer): Likewise. * probe.c (parse_probes): Likewise. * python/py-cmd.c (gdbpy_parse_command_name): Likewise. (cmdpy_init): Likewise. * python/py-gdb-readline.c (gdbpy_readline_wrapper): Likewise. * python/py-symtab.c (set_sal): Likewise. * python/py-unwind.c (pyuw_sniffer): Likewise. * python/python.c (python_interactive_command): Likewise. (compute_python_string): Likewise. * ravenscar-thread.c (get_running_thread_id): Likewise. * record-full.c (record_full_exec_insn): Likewise. (record_full_core_open_1): Likewise. * regcache.c (regcache_raw_read_signed): Likewise. (regcache_raw_read_unsigned): Likewise. (regcache_cooked_read_signed): Likewise. (regcache_cooked_read_unsigned): Likewise. * remote-fileio.c (remote_fileio_func_open): Likewise. (remote_fileio_func_rename): Likewise. (remote_fileio_func_unlink): Likewise. (remote_fileio_func_stat): Likewise. (remote_fileio_func_system): Likewise. * remote-mips.c (mips_xfer_memory): Likewise. (mips_load_srec): Likewise. (pmon_end_download): Likewise. * remote.c (new_remote_state): Likewise. (map_regcache_remote_table): Likewise. (remote_register_number_and_offset): Likewise. (init_remote_state): Likewise. (get_memory_packet_size): Likewise. (remote_pass_signals): Likewise. (remote_program_signals): Likewise. (remote_start_remote): Likewise. (remote_check_symbols): Likewise. (remote_query_supported): Likewise. (extended_remote_attach): Likewise. (process_g_packet): Likewise. (store_registers_using_G): Likewise. (putpkt_binary): Likewise. (read_frame): Likewise. (compare_sections_command): Likewise. (remote_hostio_pread): Likewise. (remote_hostio_readlink): Likewise. (remote_file_put): Likewise. (remote_file_get): Likewise. (remote_pid_to_exec_file): Likewise. (_initialize_remote): Likewise. * rs6000-aix-tdep.c (rs6000_aix_ld_info_to_xml): Likewise. (rs6000_aix_core_xfer_shared_libraries_aix): Likewise. * rs6000-tdep.c (ppc_displaced_step_copy_insn): Likewise. (bfd_uses_spe_extensions): Likewise. * s390-linux-tdep.c (s390_displaced_step_copy_insn): Likewise. * score-tdep.c (score7_malloc_and_get_memblock): Likewise. * solib-dsbt.c (decode_loadmap): Likewise. (fetch_loadmap): Likewise. (scan_dyntag): Likewise. (enable_break): Likewise. (dsbt_relocate_main_executable): Likewise. * solib-frv.c (fetch_loadmap): Likewise. (enable_break2): Likewise. (frv_relocate_main_executable): Likewise. * solib-spu.c (spu_relocate_main_executable): Likewise. (spu_bfd_open): Likewise. * solib-svr4.c (lm_info_read): Likewise. (read_program_header): Likewise. (find_program_interpreter): Likewise. (scan_dyntag): Likewise. (elf_locate_base): Likewise. (open_symbol_file_object): Likewise. (read_program_headers_from_bfd): Likewise. (svr4_relocate_main_executable): Likewise. * solib-target.c (solib_target_relocate_section_addresses): Likewise. * solib.c (solib_find_1): Likewise. (exec_file_find): Likewise. (solib_find): Likewise. * source.c (openp): Likewise. (print_source_lines_base): Likewise. (forward_search_command): Likewise. * sparc-ravenscar-thread.c (supply_register_at_address): Likewise. * spu-tdep.c (spu2ppu_prev_register): Likewise. (spu_get_overlay_table): Likewise. * stabsread.c (patch_block_stabs): Likewise. (define_symbol): Likewise. (again:): Likewise. (read_member_functions): Likewise. (read_one_struct_field): Likewise. (read_enum_type): Likewise. (common_block_start): Likewise. * stack.c (read_frame_arg): Likewise. (backtrace_command): Likewise. * stap-probe.c (stap_parse_register_operand): Likewise. * symfile.c (syms_from_objfile_1): Likewise. (find_separate_debug_file): Likewise. (load_command): Likewise. (load_progress): Likewise. (load_section_callback): Likewise. (reread_symbols): Likewise. (add_filename_language): Likewise. (allocate_compunit_symtab): Likewise. (read_target_long_array): Likewise. (simple_read_overlay_table): Likewise. * symtab.c (symbol_set_names): Likewise. (resize_symbol_cache): Likewise. (rbreak_command): Likewise. (completion_list_add_name): Likewise. (completion_list_objc_symbol): Likewise. (add_filename_to_list): Likewise. * target-descriptions.c (maint_print_c_tdesc_cmd): Likewise. * target-memory.c (target_write_memory_blocks): Likewise. * target.c (target_read_string): Likewise. (read_whatever_is_readable): Likewise. (target_read_alloc_1): Likewise. (simple_search_memory): Likewise. (target_fileio_read_alloc_1): Likewise. * tilegx-tdep.c (tilegx_push_dummy_call): Likewise. * top.c (command_line_input): Likewise. * tracefile-tfile.c (tfile_fetch_registers): Likewise. * tracefile.c (tracefile_fetch_registers): Likewise. * tracepoint.c (add_memrange): Likewise. (init_collection_list): Likewise. (add_aexpr): Likewise. (trace_dump_actions): Likewise. (parse_trace_status): Likewise. (parse_tracepoint_definition): Likewise. (parse_tsv_definition): Likewise. (parse_static_tracepoint_marker_definition): Likewise. * tui/tui-file.c (tui_sfileopen): Likewise. (tui_file_adjust_strbuf): Likewise. * tui/tui-io.c (tui_expand_tabs): Likewise. * tui/tui-source.c (tui_set_source_content): Likewise. * typeprint.c (find_global_typedef): Likewise. * ui-file.c (do_ui_file_xstrdup): Likewise. (ui_file_obsavestring): Likewise. (mem_file_write): Likewise. * utils.c (make_hex_string): Likewise. (get_regcomp_error): Likewise. (puts_filtered_tabular): Likewise. (gdb_realpath_keepfile): Likewise. (ldirname): Likewise. (gdb_bfd_errmsg): Likewise. (substitute_path_component): Likewise. * valops.c (search_struct_method): Likewise. (find_oload_champ_namespace_loop): Likewise. * valprint.c (print_decimal_chars): Likewise. (read_string): Likewise. (generic_emit_char): Likewise. * varobj.c (varobj_delete): Likewise. (varobj_value_get_print_value): Likewise. * vaxobsd-tdep.c (vaxobsd_sigtramp_sniffer): Likewise. * windows-tdep.c (display_one_tib): Likewise. * xcoffread.c (read_xcoff_symtab): Likewise. (process_xcoff_symbol): Likewise. (swap_sym): Likewise. (scan_xcoff_symtab): Likewise. (xcoff_initial_scan): Likewise. * xml-support.c (gdb_xml_end_element): Likewise. (xml_process_xincludes): Likewise. (xml_fetch_content_from_file): Likewise. * xml-syscall.c (xml_list_of_syscalls): Likewise. * xstormy16-tdep.c (xstormy16_push_dummy_call): Likewise. gdb/gdbserver/ChangeLog: * ax.c (gdb_parse_agent_expr): Add cast to allocation result assignment. (gdb_unparse_agent_expr): Likewise. * hostio.c (require_data): Likewise. (handle_pread): Likewise. * linux-low.c (disable_regset): Likewise. (fetch_register): Likewise. (store_register): Likewise. (get_dynamic): Likewise. (linux_qxfer_libraries_svr4): Likewise. * mem-break.c (delete_fast_tracepoint_jump): Likewise. (set_fast_tracepoint_jump): Likewise. (uninsert_fast_tracepoint_jumps_at): Likewise. (reinsert_fast_tracepoint_jumps_at): Likewise. (validate_inserted_breakpoint): Likewise. (clone_agent_expr): Likewise. * regcache.c (init_register_cache): Likewise. * remote-utils.c (putpkt_binary_1): Likewise. (decode_M_packet): Likewise. (decode_X_packet): Likewise. (look_up_one_symbol): Likewise. (relocate_instruction): Likewise. (monitor_output): Likewise. * server.c (handle_search_memory): Likewise. (handle_qxfer_exec_file): Likewise. (handle_qxfer_libraries): Likewise. (handle_qxfer): Likewise. (handle_query): Likewise. (handle_v_cont): Likewise. (handle_v_run): Likewise. (captured_main): Likewise. * target.c (write_inferior_memory): Likewise. * thread-db.c (try_thread_db_load_from_dir): Likewise. * tracepoint.c (init_trace_buffer): Likewise. (add_tracepoint_action): Likewise. (add_traceframe): Likewise. (add_traceframe_block): Likewise. (cmd_qtdpsrc): Likewise. (cmd_qtdv): Likewise. (cmd_qtstatus): Likewise. (response_source): Likewise. (response_tsv): Likewise. (cmd_qtnotes): Likewise. (gdb_collect): Likewise. (initialize_tracepoint): Likewise.
913 lines
25 KiB
C
913 lines
25 KiB
C
/* Dynamic architecture support for GDB, the GNU debugger.
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Copyright (C) 1998-2015 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "arch-utils.h"
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#include "buildsym.h"
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#include "gdbcmd.h"
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#include "inferior.h" /* enum CALL_DUMMY_LOCATION et al. */
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#include "infrun.h"
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#include "regcache.h"
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#include "sim-regno.h"
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#include "gdbcore.h"
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#include "osabi.h"
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#include "target-descriptions.h"
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#include "objfiles.h"
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#include "language.h"
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#include "symtab.h"
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#include "version.h"
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#include "floatformat.h"
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struct displaced_step_closure *
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simple_displaced_step_copy_insn (struct gdbarch *gdbarch,
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CORE_ADDR from, CORE_ADDR to,
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struct regcache *regs)
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{
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size_t len = gdbarch_max_insn_length (gdbarch);
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gdb_byte *buf = (gdb_byte *) xmalloc (len);
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read_memory (from, buf, len);
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write_memory (to, buf, len);
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if (debug_displaced)
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{
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fprintf_unfiltered (gdb_stdlog, "displaced: copy %s->%s: ",
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paddress (gdbarch, from), paddress (gdbarch, to));
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displaced_step_dump_bytes (gdb_stdlog, buf, len);
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}
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return (struct displaced_step_closure *) buf;
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}
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void
|
||
simple_displaced_step_free_closure (struct gdbarch *gdbarch,
|
||
struct displaced_step_closure *closure)
|
||
{
|
||
xfree (closure);
|
||
}
|
||
|
||
int
|
||
default_displaced_step_hw_singlestep (struct gdbarch *gdbarch,
|
||
struct displaced_step_closure *closure)
|
||
{
|
||
return !gdbarch_software_single_step_p (gdbarch);
|
||
}
|
||
|
||
CORE_ADDR
|
||
displaced_step_at_entry_point (struct gdbarch *gdbarch)
|
||
{
|
||
CORE_ADDR addr;
|
||
int bp_len;
|
||
|
||
addr = entry_point_address ();
|
||
|
||
/* Inferior calls also use the entry point as a breakpoint location.
|
||
We don't want displaced stepping to interfere with those
|
||
breakpoints, so leave space. */
|
||
gdbarch_breakpoint_from_pc (gdbarch, &addr, &bp_len);
|
||
addr += bp_len * 2;
|
||
|
||
return addr;
|
||
}
|
||
|
||
int
|
||
legacy_register_sim_regno (struct gdbarch *gdbarch, int regnum)
|
||
{
|
||
/* Only makes sense to supply raw registers. */
|
||
gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch));
|
||
/* NOTE: cagney/2002-05-13: The old code did it this way and it is
|
||
suspected that some GDB/SIM combinations may rely on this
|
||
behavour. The default should be one2one_register_sim_regno
|
||
(below). */
|
||
if (gdbarch_register_name (gdbarch, regnum) != NULL
|
||
&& gdbarch_register_name (gdbarch, regnum)[0] != '\0')
|
||
return regnum;
|
||
else
|
||
return LEGACY_SIM_REGNO_IGNORE;
|
||
}
|
||
|
||
CORE_ADDR
|
||
generic_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
CORE_ADDR
|
||
generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_in_solib_return_trampoline (struct gdbarch *gdbarch,
|
||
CORE_ADDR pc, const char *name)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Helper functions for gdbarch_inner_than */
|
||
|
||
int
|
||
core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
|
||
{
|
||
return (lhs < rhs);
|
||
}
|
||
|
||
int
|
||
core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
|
||
{
|
||
return (lhs > rhs);
|
||
}
|
||
|
||
/* Misc helper functions for targets. */
|
||
|
||
CORE_ADDR
|
||
core_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
return addr;
|
||
}
|
||
|
||
CORE_ADDR
|
||
convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
struct target_ops *targ)
|
||
{
|
||
return addr;
|
||
}
|
||
|
||
int
|
||
no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg)
|
||
{
|
||
return reg;
|
||
}
|
||
|
||
void
|
||
default_coff_make_msymbol_special (int val, struct minimal_symbol *msym)
|
||
{
|
||
return;
|
||
}
|
||
|
||
/* See arch-utils.h. */
|
||
|
||
void
|
||
default_make_symbol_special (struct symbol *sym, struct objfile *objfile)
|
||
{
|
||
return;
|
||
}
|
||
|
||
/* See arch-utils.h. */
|
||
|
||
CORE_ADDR
|
||
default_adjust_dwarf2_addr (CORE_ADDR pc)
|
||
{
|
||
return pc;
|
||
}
|
||
|
||
/* See arch-utils.h. */
|
||
|
||
CORE_ADDR
|
||
default_adjust_dwarf2_line (CORE_ADDR addr, int rel)
|
||
{
|
||
return addr;
|
||
}
|
||
|
||
int
|
||
cannot_register_not (struct gdbarch *gdbarch, int regnum)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Legacy version of target_virtual_frame_pointer(). Assumes that
|
||
there is an gdbarch_deprecated_fp_regnum and that it is the same,
|
||
cooked or raw. */
|
||
|
||
void
|
||
legacy_virtual_frame_pointer (struct gdbarch *gdbarch,
|
||
CORE_ADDR pc,
|
||
int *frame_regnum,
|
||
LONGEST *frame_offset)
|
||
{
|
||
/* FIXME: cagney/2002-09-13: This code is used when identifying the
|
||
frame pointer of the current PC. It is assuming that a single
|
||
register and an offset can determine this. I think it should
|
||
instead generate a byte code expression as that would work better
|
||
with things like Dwarf2's CFI. */
|
||
if (gdbarch_deprecated_fp_regnum (gdbarch) >= 0
|
||
&& gdbarch_deprecated_fp_regnum (gdbarch)
|
||
< gdbarch_num_regs (gdbarch))
|
||
*frame_regnum = gdbarch_deprecated_fp_regnum (gdbarch);
|
||
else if (gdbarch_sp_regnum (gdbarch) >= 0
|
||
&& gdbarch_sp_regnum (gdbarch)
|
||
< gdbarch_num_regs (gdbarch))
|
||
*frame_regnum = gdbarch_sp_regnum (gdbarch);
|
||
else
|
||
/* Should this be an internal error? I guess so, it is reflecting
|
||
an architectural limitation in the current design. */
|
||
internal_error (__FILE__, __LINE__,
|
||
_("No virtual frame pointer available"));
|
||
*frame_offset = 0;
|
||
}
|
||
|
||
|
||
int
|
||
generic_convert_register_p (struct gdbarch *gdbarch, int regnum,
|
||
struct type *type)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_instruction_nullified (struct gdbarch *gdbarch,
|
||
struct regcache *regcache)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
default_remote_register_number (struct gdbarch *gdbarch,
|
||
int regno)
|
||
{
|
||
return regno;
|
||
}
|
||
|
||
/* See arch-utils.h. */
|
||
|
||
int
|
||
default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Functions to manipulate the endianness of the target. */
|
||
|
||
static enum bfd_endian target_byte_order_user = BFD_ENDIAN_UNKNOWN;
|
||
|
||
static const char endian_big[] = "big";
|
||
static const char endian_little[] = "little";
|
||
static const char endian_auto[] = "auto";
|
||
static const char *const endian_enum[] =
|
||
{
|
||
endian_big,
|
||
endian_little,
|
||
endian_auto,
|
||
NULL,
|
||
};
|
||
static const char *set_endian_string;
|
||
|
||
enum bfd_endian
|
||
selected_byte_order (void)
|
||
{
|
||
return target_byte_order_user;
|
||
}
|
||
|
||
/* Called by ``show endian''. */
|
||
|
||
static void
|
||
show_endian (struct ui_file *file, int from_tty, struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
if (target_byte_order_user == BFD_ENDIAN_UNKNOWN)
|
||
if (gdbarch_byte_order (get_current_arch ()) == BFD_ENDIAN_BIG)
|
||
fprintf_unfiltered (file, _("The target endianness is set automatically "
|
||
"(currently big endian)\n"));
|
||
else
|
||
fprintf_unfiltered (file, _("The target endianness is set automatically "
|
||
"(currently little endian)\n"));
|
||
else
|
||
if (target_byte_order_user == BFD_ENDIAN_BIG)
|
||
fprintf_unfiltered (file,
|
||
_("The target is assumed to be big endian\n"));
|
||
else
|
||
fprintf_unfiltered (file,
|
||
_("The target is assumed to be little endian\n"));
|
||
}
|
||
|
||
static void
|
||
set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
struct gdbarch_info info;
|
||
|
||
gdbarch_info_init (&info);
|
||
|
||
if (set_endian_string == endian_auto)
|
||
{
|
||
target_byte_order_user = BFD_ENDIAN_UNKNOWN;
|
||
if (! gdbarch_update_p (info))
|
||
internal_error (__FILE__, __LINE__,
|
||
_("set_endian: architecture update failed"));
|
||
}
|
||
else if (set_endian_string == endian_little)
|
||
{
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
if (! gdbarch_update_p (info))
|
||
printf_unfiltered (_("Little endian target not supported by GDB\n"));
|
||
else
|
||
target_byte_order_user = BFD_ENDIAN_LITTLE;
|
||
}
|
||
else if (set_endian_string == endian_big)
|
||
{
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
if (! gdbarch_update_p (info))
|
||
printf_unfiltered (_("Big endian target not supported by GDB\n"));
|
||
else
|
||
target_byte_order_user = BFD_ENDIAN_BIG;
|
||
}
|
||
else
|
||
internal_error (__FILE__, __LINE__,
|
||
_("set_endian: bad value"));
|
||
|
||
show_endian (gdb_stdout, from_tty, NULL, NULL);
|
||
}
|
||
|
||
/* Given SELECTED, a currently selected BFD architecture, and
|
||
TARGET_DESC, the current target description, return what
|
||
architecture to use.
|
||
|
||
SELECTED may be NULL, in which case we return the architecture
|
||
associated with TARGET_DESC. If SELECTED specifies a variant
|
||
of the architecture associtated with TARGET_DESC, return the
|
||
more specific of the two.
|
||
|
||
If SELECTED is a different architecture, but it is accepted as
|
||
compatible by the target, we can use the target architecture.
|
||
|
||
If SELECTED is obviously incompatible, warn the user. */
|
||
|
||
static const struct bfd_arch_info *
|
||
choose_architecture_for_target (const struct target_desc *target_desc,
|
||
const struct bfd_arch_info *selected)
|
||
{
|
||
const struct bfd_arch_info *from_target = tdesc_architecture (target_desc);
|
||
const struct bfd_arch_info *compat1, *compat2;
|
||
|
||
if (selected == NULL)
|
||
return from_target;
|
||
|
||
if (from_target == NULL)
|
||
return selected;
|
||
|
||
/* struct bfd_arch_info objects are singletons: that is, there's
|
||
supposed to be exactly one instance for a given machine. So you
|
||
can tell whether two are equivalent by comparing pointers. */
|
||
if (from_target == selected)
|
||
return selected;
|
||
|
||
/* BFD's 'A->compatible (A, B)' functions return zero if A and B are
|
||
incompatible. But if they are compatible, it returns the 'more
|
||
featureful' of the two arches. That is, if A can run code
|
||
written for B, but B can't run code written for A, then it'll
|
||
return A.
|
||
|
||
Some targets (e.g. MIPS as of 2006-12-04) don't fully
|
||
implement this, instead always returning NULL or the first
|
||
argument. We detect that case by checking both directions. */
|
||
|
||
compat1 = selected->compatible (selected, from_target);
|
||
compat2 = from_target->compatible (from_target, selected);
|
||
|
||
if (compat1 == NULL && compat2 == NULL)
|
||
{
|
||
/* BFD considers the architectures incompatible. Check our
|
||
target description whether it accepts SELECTED as compatible
|
||
anyway. */
|
||
if (tdesc_compatible_p (target_desc, selected))
|
||
return from_target;
|
||
|
||
warning (_("Selected architecture %s is not compatible "
|
||
"with reported target architecture %s"),
|
||
selected->printable_name, from_target->printable_name);
|
||
return selected;
|
||
}
|
||
|
||
if (compat1 == NULL)
|
||
return compat2;
|
||
if (compat2 == NULL)
|
||
return compat1;
|
||
if (compat1 == compat2)
|
||
return compat1;
|
||
|
||
/* If the two didn't match, but one of them was a default
|
||
architecture, assume the more specific one is correct. This
|
||
handles the case where an executable or target description just
|
||
says "mips", but the other knows which MIPS variant. */
|
||
if (compat1->the_default)
|
||
return compat2;
|
||
if (compat2->the_default)
|
||
return compat1;
|
||
|
||
/* We have no idea which one is better. This is a bug, but not
|
||
a critical problem; warn the user. */
|
||
warning (_("Selected architecture %s is ambiguous with "
|
||
"reported target architecture %s"),
|
||
selected->printable_name, from_target->printable_name);
|
||
return selected;
|
||
}
|
||
|
||
/* Functions to manipulate the architecture of the target. */
|
||
|
||
enum set_arch { set_arch_auto, set_arch_manual };
|
||
|
||
static const struct bfd_arch_info *target_architecture_user;
|
||
|
||
static const char *set_architecture_string;
|
||
|
||
const char *
|
||
selected_architecture_name (void)
|
||
{
|
||
if (target_architecture_user == NULL)
|
||
return NULL;
|
||
else
|
||
return set_architecture_string;
|
||
}
|
||
|
||
/* Called if the user enters ``show architecture'' without an
|
||
argument. */
|
||
|
||
static void
|
||
show_architecture (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
if (target_architecture_user == NULL)
|
||
fprintf_filtered (file, _("The target architecture is set "
|
||
"automatically (currently %s)\n"),
|
||
gdbarch_bfd_arch_info (get_current_arch ())->printable_name);
|
||
else
|
||
fprintf_filtered (file, _("The target architecture is assumed to be %s\n"),
|
||
set_architecture_string);
|
||
}
|
||
|
||
|
||
/* Called if the user enters ``set architecture'' with or without an
|
||
argument. */
|
||
|
||
static void
|
||
set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
struct gdbarch_info info;
|
||
|
||
gdbarch_info_init (&info);
|
||
|
||
if (strcmp (set_architecture_string, "auto") == 0)
|
||
{
|
||
target_architecture_user = NULL;
|
||
if (!gdbarch_update_p (info))
|
||
internal_error (__FILE__, __LINE__,
|
||
_("could not select an architecture automatically"));
|
||
}
|
||
else
|
||
{
|
||
info.bfd_arch_info = bfd_scan_arch (set_architecture_string);
|
||
if (info.bfd_arch_info == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("set_architecture: bfd_scan_arch failed"));
|
||
if (gdbarch_update_p (info))
|
||
target_architecture_user = info.bfd_arch_info;
|
||
else
|
||
printf_unfiltered (_("Architecture `%s' not recognized.\n"),
|
||
set_architecture_string);
|
||
}
|
||
show_architecture (gdb_stdout, from_tty, NULL, NULL);
|
||
}
|
||
|
||
/* Try to select a global architecture that matches "info". Return
|
||
non-zero if the attempt succeeds. */
|
||
int
|
||
gdbarch_update_p (struct gdbarch_info info)
|
||
{
|
||
struct gdbarch *new_gdbarch;
|
||
|
||
/* Check for the current file. */
|
||
if (info.abfd == NULL)
|
||
info.abfd = exec_bfd;
|
||
if (info.abfd == NULL)
|
||
info.abfd = core_bfd;
|
||
|
||
/* Check for the current target description. */
|
||
if (info.target_desc == NULL)
|
||
info.target_desc = target_current_description ();
|
||
|
||
new_gdbarch = gdbarch_find_by_info (info);
|
||
|
||
/* If there no architecture by that name, reject the request. */
|
||
if (new_gdbarch == NULL)
|
||
{
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"Architecture not found\n");
|
||
return 0;
|
||
}
|
||
|
||
/* If it is the same old architecture, accept the request (but don't
|
||
swap anything). */
|
||
if (new_gdbarch == target_gdbarch ())
|
||
{
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"Architecture %s (%s) unchanged\n",
|
||
host_address_to_string (new_gdbarch),
|
||
gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
|
||
return 1;
|
||
}
|
||
|
||
/* It's a new architecture, swap it in. */
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"New architecture %s (%s) selected\n",
|
||
host_address_to_string (new_gdbarch),
|
||
gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
|
||
set_target_gdbarch (new_gdbarch);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Return the architecture for ABFD. If no suitable architecture
|
||
could be find, return NULL. */
|
||
|
||
struct gdbarch *
|
||
gdbarch_from_bfd (bfd *abfd)
|
||
{
|
||
struct gdbarch_info info;
|
||
gdbarch_info_init (&info);
|
||
|
||
info.abfd = abfd;
|
||
return gdbarch_find_by_info (info);
|
||
}
|
||
|
||
/* Set the dynamic target-system-dependent parameters (architecture,
|
||
byte-order) using information found in the BFD */
|
||
|
||
void
|
||
set_gdbarch_from_file (bfd *abfd)
|
||
{
|
||
struct gdbarch_info info;
|
||
struct gdbarch *gdbarch;
|
||
|
||
gdbarch_info_init (&info);
|
||
info.abfd = abfd;
|
||
info.target_desc = target_current_description ();
|
||
gdbarch = gdbarch_find_by_info (info);
|
||
|
||
if (gdbarch == NULL)
|
||
error (_("Architecture of file not recognized."));
|
||
set_target_gdbarch (gdbarch);
|
||
}
|
||
|
||
/* Initialize the current architecture. Update the ``set
|
||
architecture'' command so that it specifies a list of valid
|
||
architectures. */
|
||
|
||
#ifdef DEFAULT_BFD_ARCH
|
||
extern const bfd_arch_info_type DEFAULT_BFD_ARCH;
|
||
static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH;
|
||
#else
|
||
static const bfd_arch_info_type *default_bfd_arch;
|
||
#endif
|
||
|
||
#ifdef DEFAULT_BFD_VEC
|
||
extern const bfd_target DEFAULT_BFD_VEC;
|
||
static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC;
|
||
#else
|
||
static const bfd_target *default_bfd_vec;
|
||
#endif
|
||
|
||
static enum bfd_endian default_byte_order = BFD_ENDIAN_UNKNOWN;
|
||
|
||
void
|
||
initialize_current_architecture (void)
|
||
{
|
||
const char **arches = gdbarch_printable_names ();
|
||
struct gdbarch_info info;
|
||
|
||
/* determine a default architecture and byte order. */
|
||
gdbarch_info_init (&info);
|
||
|
||
/* Find a default architecture. */
|
||
if (default_bfd_arch == NULL)
|
||
{
|
||
/* Choose the architecture by taking the first one
|
||
alphabetically. */
|
||
const char *chosen = arches[0];
|
||
const char **arch;
|
||
for (arch = arches; *arch != NULL; arch++)
|
||
{
|
||
if (strcmp (*arch, chosen) < 0)
|
||
chosen = *arch;
|
||
}
|
||
if (chosen == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("initialize_current_architecture: No arch"));
|
||
default_bfd_arch = bfd_scan_arch (chosen);
|
||
if (default_bfd_arch == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("initialize_current_architecture: Arch not found"));
|
||
}
|
||
|
||
info.bfd_arch_info = default_bfd_arch;
|
||
|
||
/* Take several guesses at a byte order. */
|
||
if (default_byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& default_bfd_vec != NULL)
|
||
{
|
||
/* Extract BFD's default vector's byte order. */
|
||
switch (default_bfd_vec->byteorder)
|
||
{
|
||
case BFD_ENDIAN_BIG:
|
||
default_byte_order = BFD_ENDIAN_BIG;
|
||
break;
|
||
case BFD_ENDIAN_LITTLE:
|
||
default_byte_order = BFD_ENDIAN_LITTLE;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
if (default_byte_order == BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
/* look for ``*el-*'' in the target name. */
|
||
const char *chp;
|
||
chp = strchr (target_name, '-');
|
||
if (chp != NULL
|
||
&& chp - 2 >= target_name
|
||
&& startswith (chp - 2, "el"))
|
||
default_byte_order = BFD_ENDIAN_LITTLE;
|
||
}
|
||
if (default_byte_order == BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
/* Wire it to big-endian!!! */
|
||
default_byte_order = BFD_ENDIAN_BIG;
|
||
}
|
||
|
||
info.byte_order = default_byte_order;
|
||
info.byte_order_for_code = info.byte_order;
|
||
|
||
if (! gdbarch_update_p (info))
|
||
internal_error (__FILE__, __LINE__,
|
||
_("initialize_current_architecture: Selection of "
|
||
"initial architecture failed"));
|
||
|
||
/* Create the ``set architecture'' command appending ``auto'' to the
|
||
list of architectures. */
|
||
{
|
||
/* Append ``auto''. */
|
||
int nr;
|
||
for (nr = 0; arches[nr] != NULL; nr++);
|
||
arches = XRESIZEVEC (const char *, arches, nr + 2);
|
||
arches[nr + 0] = "auto";
|
||
arches[nr + 1] = NULL;
|
||
add_setshow_enum_cmd ("architecture", class_support,
|
||
arches, &set_architecture_string,
|
||
_("Set architecture of target."),
|
||
_("Show architecture of target."), NULL,
|
||
set_architecture, show_architecture,
|
||
&setlist, &showlist);
|
||
add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
|
||
}
|
||
}
|
||
|
||
|
||
/* Initialize a gdbarch info to values that will be automatically
|
||
overridden. Note: Originally, this ``struct info'' was initialized
|
||
using memset(0). Unfortunately, that ran into problems, namely
|
||
BFD_ENDIAN_BIG is zero. An explicit initialization function that
|
||
can explicitly set each field to a well defined value is used. */
|
||
|
||
void
|
||
gdbarch_info_init (struct gdbarch_info *info)
|
||
{
|
||
memset (info, 0, sizeof (struct gdbarch_info));
|
||
info->byte_order = BFD_ENDIAN_UNKNOWN;
|
||
info->byte_order_for_code = info->byte_order;
|
||
info->osabi = GDB_OSABI_UNINITIALIZED;
|
||
}
|
||
|
||
/* Similar to init, but this time fill in the blanks. Information is
|
||
obtained from the global "set ..." options and explicitly
|
||
initialized INFO fields. */
|
||
|
||
void
|
||
gdbarch_info_fill (struct gdbarch_info *info)
|
||
{
|
||
/* "(gdb) set architecture ...". */
|
||
if (info->bfd_arch_info == NULL
|
||
&& target_architecture_user)
|
||
info->bfd_arch_info = target_architecture_user;
|
||
/* From the file. */
|
||
if (info->bfd_arch_info == NULL
|
||
&& info->abfd != NULL
|
||
&& bfd_get_arch (info->abfd) != bfd_arch_unknown
|
||
&& bfd_get_arch (info->abfd) != bfd_arch_obscure)
|
||
info->bfd_arch_info = bfd_get_arch_info (info->abfd);
|
||
/* From the target. */
|
||
if (info->target_desc != NULL)
|
||
info->bfd_arch_info = choose_architecture_for_target
|
||
(info->target_desc, info->bfd_arch_info);
|
||
/* From the default. */
|
||
if (info->bfd_arch_info == NULL)
|
||
info->bfd_arch_info = default_bfd_arch;
|
||
|
||
/* "(gdb) set byte-order ...". */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& target_byte_order_user != BFD_ENDIAN_UNKNOWN)
|
||
info->byte_order = target_byte_order_user;
|
||
/* From the INFO struct. */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& info->abfd != NULL)
|
||
info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG
|
||
: bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE
|
||
: BFD_ENDIAN_UNKNOWN);
|
||
/* From the default. */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN)
|
||
info->byte_order = default_byte_order;
|
||
info->byte_order_for_code = info->byte_order;
|
||
|
||
/* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */
|
||
/* From the manual override, or from file. */
|
||
if (info->osabi == GDB_OSABI_UNINITIALIZED)
|
||
info->osabi = gdbarch_lookup_osabi (info->abfd);
|
||
/* From the target. */
|
||
if (info->osabi == GDB_OSABI_UNKNOWN && info->target_desc != NULL)
|
||
info->osabi = tdesc_osabi (info->target_desc);
|
||
/* From the configured default. */
|
||
#ifdef GDB_OSABI_DEFAULT
|
||
if (info->osabi == GDB_OSABI_UNKNOWN)
|
||
info->osabi = GDB_OSABI_DEFAULT;
|
||
#endif
|
||
|
||
/* Must have at least filled in the architecture. */
|
||
gdb_assert (info->bfd_arch_info != NULL);
|
||
}
|
||
|
||
/* Return "current" architecture. If the target is running, this is
|
||
the architecture of the selected frame. Otherwise, the "current"
|
||
architecture defaults to the target architecture.
|
||
|
||
This function should normally be called solely by the command
|
||
interpreter routines to determine the architecture to execute a
|
||
command in. */
|
||
struct gdbarch *
|
||
get_current_arch (void)
|
||
{
|
||
if (has_stack_frames ())
|
||
return get_frame_arch (get_selected_frame (NULL));
|
||
else
|
||
return target_gdbarch ();
|
||
}
|
||
|
||
int
|
||
default_has_shared_address_space (struct gdbarch *gdbarch)
|
||
{
|
||
/* Simply say no. In most unix-like targets each inferior/process
|
||
has its own address space. */
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
char **msg)
|
||
{
|
||
/* We don't know if maybe the target has some way to do fast
|
||
tracepoints that doesn't need gdbarch, so always say yes. */
|
||
if (msg)
|
||
*msg = NULL;
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
default_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr,
|
||
int *kindptr)
|
||
{
|
||
gdbarch_breakpoint_from_pc (gdbarch, pcptr, kindptr);
|
||
}
|
||
|
||
void
|
||
default_gen_return_address (struct gdbarch *gdbarch,
|
||
struct agent_expr *ax, struct axs_value *value,
|
||
CORE_ADDR scope)
|
||
{
|
||
error (_("This architecture has no method to collect a return address."));
|
||
}
|
||
|
||
int
|
||
default_return_in_first_hidden_param_p (struct gdbarch *gdbarch,
|
||
struct type *type)
|
||
{
|
||
/* Usually, the return value's address is stored the in the "first hidden"
|
||
parameter if the return value should be passed by reference, as
|
||
specified in ABI. */
|
||
return language_pass_by_reference (type);
|
||
}
|
||
|
||
int default_insn_is_call (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int default_insn_is_ret (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int default_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
default_skip_permanent_breakpoint (struct regcache *regcache)
|
||
{
|
||
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
||
CORE_ADDR current_pc = regcache_read_pc (regcache);
|
||
const gdb_byte *bp_insn;
|
||
int bp_len;
|
||
|
||
bp_insn = gdbarch_breakpoint_from_pc (gdbarch, ¤t_pc, &bp_len);
|
||
current_pc += bp_len;
|
||
regcache_write_pc (regcache, current_pc);
|
||
}
|
||
|
||
CORE_ADDR
|
||
default_infcall_mmap (CORE_ADDR size, unsigned prot)
|
||
{
|
||
error (_("This target does not support inferior memory allocation by mmap."));
|
||
}
|
||
|
||
void
|
||
default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size)
|
||
{
|
||
/* Memory reserved by inferior mmap is kept leaked. */
|
||
}
|
||
|
||
/* -mcmodel=large is used so that no GOT (Global Offset Table) is needed to be
|
||
created in inferior memory by GDB (normally it is set by ld.so). */
|
||
|
||
char *
|
||
default_gcc_target_options (struct gdbarch *gdbarch)
|
||
{
|
||
return xstrprintf ("-m%d%s", gdbarch_ptr_bit (gdbarch),
|
||
gdbarch_ptr_bit (gdbarch) == 64 ? " -mcmodel=large" : "");
|
||
}
|
||
|
||
/* gdbarch gnu_triplet_regexp method. */
|
||
|
||
const char *
|
||
default_gnu_triplet_regexp (struct gdbarch *gdbarch)
|
||
{
|
||
return gdbarch_bfd_arch_info (gdbarch)->arch_name;
|
||
}
|
||
|
||
/* Default method for gdbarch_addressable_memory_unit_size. By default, a memory byte has
|
||
a size of 1 octet. */
|
||
|
||
int
|
||
default_addressable_memory_unit_size (struct gdbarch *gdbarch)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
/* -Wmissing-prototypes */
|
||
extern initialize_file_ftype _initialize_gdbarch_utils;
|
||
|
||
void
|
||
_initialize_gdbarch_utils (void)
|
||
{
|
||
add_setshow_enum_cmd ("endian", class_support,
|
||
endian_enum, &set_endian_string,
|
||
_("Set endianness of target."),
|
||
_("Show endianness of target."),
|
||
NULL, set_endian, show_endian,
|
||
&setlist, &showlist);
|
||
}
|