79a45e254f
* ui-out.h (uiout): Rename to ... (current_uiout): ... this. * ui-out.c (uiout): Rename to ... (current_uiout): ... this. * ada-lang.c (print_it_exception, print_one_exception) (print_mention_exception): Adjust. * breakpoint.c (watchpoint_check): Adjust. (print_breakpoint_location, print_one_breakpoint, breakpoint_1) (default_collect_info, watchpoints_info, print_one_catch_fork) (print_one_catch_vfork, print_one_catch_syscall) (print_one_catch_exec, mention, print_it_ranged_breakpoint) (print_one_ranged_breakpoint, print_mention_ranged_breakpoint) (print_it_watchpoint, print_mention_watchpoint) (print_it_masked_watchpoint, print_mention_masked_watchpoint) (print_it_exception_catchpoint, print_one_exception_catchpoint) (print_mention_exception_catchpoint, say_where, bkpt_print_it) (bkpt_print_mention, momentary_bkpt_print_it) (tracepoint_print_mention, update_static_tracepoint) (tracepoints_info, save_breakpoints): Adjust. * cli-out.c (field_separator): Adjust. * cp-abi.c (list_cp_abis, show_cp_abi_cmd): Adjust. * exceptions.c (catch_exceptions_with_msg, catch_errors): Adjust. * frame.c (get_current_frame): Adjust. * infcmd.c (run_command_1, print_return_value): Adjust. * inferior.c (inferior_command, info_inferiors_command): Adjust. * infrun.c (print_end_stepping_range_reason): Adjust. (print_signal_exited_reason, print_exited_reason): Adjust. (print_signal_received_reason, print_no_history_reason): Adjust. * interps.c (interp_set): Adjust. * osdata.c (info_osdata_command): Adjust. * progspace.c (maintenance_info_program_spaces_command): Adjust. * remote-fileio.c (remote_fileio_request): Adjust. * remote.c (show_remote_cmd): Adjust. * solib.c (info_sharedlibrary_command): Adjust. * source.c (print_source_lines_base): Adjust. * stack.c (print_stack_frame): Adjust. (do_gdb_disassembly, print_frame_info, print_frame): Adjust. * symfile-mem.c (add_vsyscall_page): Adjust. * symfile.c (load_progress, generic_load) (print_transfer_performance): Adjust. * thread.c (info_threads_command, restore_selected_frame) (thread_command): Adjust. * top.c (make_cleanup_restore_ui_file): Adjust. * tracepoint.c (tvariables_info_1, trace_status_mi, tfind_1) (print_one_static_tracepoint_marker): Adjust. * cli/cli-cmds.c (print_disassembly): Adjust. * cli/cli-decode.c (print_doc_line): Adjust. * cli/cli-interp.c (safe_execute_command): Adjust. * cli/cli-logging.c (set_logging_redirect, pop_output_files) (handle_redirections): Adjust. * cli/cli-script.c (show_user_1): Adjust. * cli/cli-setshow.c (do_setshow_command, cmd_show_list): Adjust. * mi/mi-cmd-break.c (breakpoint_notify): Adjust. * mi/mi-cmd-disas.c (mi_cmd_disassemble): Adjust. * mi/mi-cmd-env.c (mi_cmd_env_pwd, mi_cmd_env_path) (mi_cmd_env_dir): Adjust. * mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_file) (print_partial_file_name, mi_cmd_file_list_exec_source_files): Adjust. * mi/mi-cmd-stack.c (mi_cmd_stack_list_frames) (mi_cmd_stack_info_depth, mi_cmd_stack_list_args) (list_args_or_locals): Adjust. * mi/mi-cmd-var.c (print_varobj, mi_cmd_var_create) (mi_cmd_var_delete, mi_cmd_var_set_format, mi_cmd_var_set_frozen) (mi_cmd_var_show_format, mi_cmd_var_info_num_children) (mi_cmd_var_list_children, mi_cmd_var_info_type) (mi_cmd_var_info_path_expression, mi_cmd_var_info_expression) (mi_cmd_var_show_attributes, mi_cmd_var_evaluate_expression) (mi_cmd_var_assign, mi_cmd_var_update, varobj_update_one): Adjust. * mi/mi-interp.c (mi_on_normal_stop): Adjust. * mi/mi-main.c (mi_cmd_gdb_exit, mi_cmd_thread_select) (mi_cmd_thread_list_ids, mi_cmd_thread_info, print_one_inferior) (list_available_thread_groups, mi_cmd_list_thread_groups) (mi_cmd_data_list_register_names) (mi_cmd_data_list_changed_registers) (mi_cmd_data_list_register_values, get_register) (mi_cmd_data_evaluate_expression, mi_cmd_data_read_memory) (mi_cmd_data_read_memory_bytes, mi_cmd_list_features) (mi_cmd_list_target_features, mi_cmd_add_inferior) (mi_execute_command, mi_load_progress): Adjust. * mi/mi-symbol-cmds.c (mi_cmd_symbol_list_lines): Adjust. * python/py-auto-load.c (print_script, info_auto_load_scripts): Adjust. * python/py-breakpoint.c (bppy_get_commands): Adjust. * tui/tui-interp.c (tui_command_loop): Adjust. * tui/tui-io.c (tui_setup_io, tui_initialize_io): Adjust.
634 lines
18 KiB
C
634 lines
18 KiB
C
/* GDB routines for supporting auto-loaded scripts.
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Copyright (C) 2010, 2011 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 "filenames.h"
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#include "gdb_string.h"
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#include "gdb_regex.h"
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#include "top.h"
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#include "exceptions.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "observer.h"
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#include "progspace.h"
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#include "objfiles.h"
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#include "python.h"
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#include "cli/cli-cmds.h"
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/* Internal-use flag to enable/disable auto-loading.
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This is true if we should auto-load python code when an objfile is opened,
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false otherwise.
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Both auto_load_scripts && gdbpy_global_auto_load must be true to enable
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auto-loading.
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This flag exists to facilitate deferring auto-loading during start-up
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until after ./.gdbinit has been read; it may augment the search directories
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used to find the scripts. */
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int gdbpy_global_auto_load = 1;
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#ifdef HAVE_PYTHON
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#include "python-internal.h"
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/* NOTE: It's trivial to also support auto-loading normal gdb scripts.
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There has yet to be a need so it's not implemented. */
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/* The suffix of per-objfile scripts to auto-load.
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E.g. When the program loads libfoo.so, look for libfoo-gdb.py. */
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#define GDBPY_AUTO_FILE_NAME "-gdb.py"
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/* The section to look for scripts (in file formats that support sections).
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Each entry in this section is a byte of value 1, and then the nul-terminated
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name of the script. The script name may include a directory.
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The leading byte is to allow upward compatible extensions. */
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#define GDBPY_AUTO_SECTION_NAME ".debug_gdb_scripts"
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/* For scripts specified in .debug_gdb_scripts, multiple objfiles may load
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the same script. There's no point in loading the script multiple times,
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and there can be a lot of objfiles and scripts, so we keep track of scripts
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loaded this way. */
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struct auto_load_pspace_info
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{
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/* For each program space we keep track of loaded scripts. */
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struct htab *loaded_scripts;
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/* Non-zero if we've issued the warning about an auto-load script not being
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found. We only want to issue this warning once. */
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int script_not_found_warning_printed;
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};
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/* Objects of this type are stored in the loaded script hash table. */
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struct loaded_script
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{
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/* Name as provided by the objfile. */
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const char *name;
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/* Full path name or NULL if script wasn't found (or was otherwise
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inaccessible). */
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const char *full_path;
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};
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/* User-settable option to enable/disable auto-loading:
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set auto-load-scripts on|off
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This is true if we should auto-load associated scripts when an objfile
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is opened, false otherwise.
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At the moment, this only affects python scripts, but there's no reason
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one couldn't also have other kinds of auto-loaded scripts, and there's
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no reason to have them each controlled by a separate flag.
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So we elide "python" from the name here and in the option.
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The fact that it lives here is just an implementation detail. */
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static int auto_load_scripts = 1;
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/* Per-program-space data key. */
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static const struct program_space_data *auto_load_pspace_data;
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static void
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auto_load_pspace_data_cleanup (struct program_space *pspace, void *arg)
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{
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struct auto_load_pspace_info *info;
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info = program_space_data (pspace, auto_load_pspace_data);
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if (info != NULL)
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{
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if (info->loaded_scripts)
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htab_delete (info->loaded_scripts);
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xfree (info);
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}
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}
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/* Get the current autoload data. If none is found yet, add it now. This
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function always returns a valid object. */
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static struct auto_load_pspace_info *
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get_auto_load_pspace_data (struct program_space *pspace)
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{
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struct auto_load_pspace_info *info;
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info = program_space_data (pspace, auto_load_pspace_data);
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if (info == NULL)
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{
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info = XZALLOC (struct auto_load_pspace_info);
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set_program_space_data (pspace, auto_load_pspace_data, info);
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}
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return info;
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}
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/* Hash function for the loaded script hash. */
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static hashval_t
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hash_loaded_script_entry (const void *data)
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{
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const struct loaded_script *e = data;
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return htab_hash_string (e->name);
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}
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/* Equality function for the loaded script hash. */
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static int
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eq_loaded_script_entry (const void *a, const void *b)
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{
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const struct loaded_script *ea = a;
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const struct loaded_script *eb = b;
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return strcmp (ea->name, eb->name) == 0;
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}
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/* Initialize the table to track loaded scripts.
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Each entry is hashed by the full path name. */
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static void
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init_loaded_scripts_info (struct auto_load_pspace_info *pspace_info)
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{
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/* Choose 31 as the starting size of the hash table, somewhat arbitrarily.
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Space for each entry is obtained with one malloc so we can free them
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easily. */
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pspace_info->loaded_scripts = htab_create (31,
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hash_loaded_script_entry,
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eq_loaded_script_entry,
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xfree);
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pspace_info->script_not_found_warning_printed = FALSE;
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}
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/* Wrapper on get_auto_load_pspace_data to also allocate the hash table
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for loading scripts. */
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static struct auto_load_pspace_info *
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get_auto_load_pspace_data_for_loading (struct program_space *pspace)
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{
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struct auto_load_pspace_info *info;
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info = get_auto_load_pspace_data (pspace);
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if (info->loaded_scripts == NULL)
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init_loaded_scripts_info (info);
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return info;
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}
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/* Add script NAME to hash table HTAB.
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FULL_PATH is NULL if the script wasn't found.
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The result is true if the script was already in the hash table. */
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static int
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maybe_add_script (struct htab *htab, const char *name, const char *full_path)
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{
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struct loaded_script **slot, entry;
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int in_hash_table;
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entry.name = name;
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entry.full_path = full_path;
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slot = (struct loaded_script **) htab_find_slot (htab, &entry, INSERT);
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in_hash_table = *slot != NULL;
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/* If this script is not in the hash table, add it. */
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if (! in_hash_table)
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{
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char *p;
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/* Allocate all space in one chunk so it's easier to free. */
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*slot = xmalloc (sizeof (**slot)
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+ strlen (name) + 1
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+ (full_path != NULL ? (strlen (full_path) + 1) : 0));
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p = ((char*) *slot) + sizeof (**slot);
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strcpy (p, name);
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(*slot)->name = p;
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if (full_path != NULL)
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{
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p += strlen (p) + 1;
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strcpy (p, full_path);
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(*slot)->full_path = p;
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}
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else
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(*slot)->full_path = NULL;
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}
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return in_hash_table;
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}
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/* Load scripts specified in OBJFILE.
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START,END delimit a buffer containing a list of nul-terminated
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file names.
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SOURCE_NAME is used in error messages.
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Scripts are found per normal "source -s" command processing.
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First the script is looked for in $cwd. If not found there the
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source search path is used.
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The section contains a list of path names of files containing
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python code to load. Each path is null-terminated. */
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static void
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source_section_scripts (struct objfile *objfile, const char *source_name,
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const char *start, const char *end)
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{
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const char *p;
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struct auto_load_pspace_info *pspace_info;
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pspace_info = get_auto_load_pspace_data_for_loading (current_program_space);
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for (p = start; p < end; ++p)
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{
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const char *file;
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FILE *stream;
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char *full_path;
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int opened, in_hash_table;
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if (*p != 1)
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{
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warning (_("Invalid entry in %s section"), GDBPY_AUTO_SECTION_NAME);
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/* We could try various heuristics to find the next valid entry,
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but it's safer to just punt. */
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break;
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}
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file = ++p;
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while (p < end && *p != '\0')
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++p;
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if (p == end)
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{
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char *buf = alloca (p - file + 1);
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memcpy (buf, file, p - file);
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buf[p - file] = '\0';
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warning (_("Non-null-terminated path in %s: %s"),
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source_name, buf);
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/* Don't load it. */
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break;
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}
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if (p == file)
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{
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warning (_("Empty path in %s"), source_name);
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continue;
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}
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opened = find_and_open_script (file, 1 /*search_path*/,
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&stream, &full_path);
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/* If one script isn't found it's not uncommon for more to not be
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found either. We don't want to print an error message for each
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script, too much noise. Instead, we print the warning once and tell
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the user how to find the list of scripts that weren't loaded.
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IWBN if complaints.c were more general-purpose. */
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in_hash_table = maybe_add_script (pspace_info->loaded_scripts, file,
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opened ? full_path : NULL);
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if (opened)
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free (full_path);
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if (! opened)
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{
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/* We don't throw an error, the program is still debuggable. */
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if (! pspace_info->script_not_found_warning_printed)
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{
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warning (_("Missing auto-load scripts referenced in section %s\n\
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of file %s\n\
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Use `info auto-load-scripts [REGEXP]' to list them."),
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GDBPY_AUTO_SECTION_NAME, objfile->name);
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pspace_info->script_not_found_warning_printed = TRUE;
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}
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continue;
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}
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/* If this file is not currently loaded, load it. */
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if (! in_hash_table)
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source_python_script_for_objfile (objfile, stream, file);
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}
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}
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/* Load scripts specified in section SECTION_NAME of OBJFILE. */
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static void
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auto_load_section_scripts (struct objfile *objfile, const char *section_name)
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{
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bfd *abfd = objfile->obfd;
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asection *scripts_sect;
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bfd_size_type size;
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char *p;
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struct cleanup *cleanups;
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scripts_sect = bfd_get_section_by_name (abfd, section_name);
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if (scripts_sect == NULL)
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return;
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size = bfd_get_section_size (scripts_sect);
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p = xmalloc (size);
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cleanups = make_cleanup (xfree, p);
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if (bfd_get_section_contents (abfd, scripts_sect, p, (file_ptr) 0, size))
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source_section_scripts (objfile, section_name, p, p + size);
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else
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warning (_("Couldn't read %s section of %s"),
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section_name, bfd_get_filename (abfd));
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do_cleanups (cleanups);
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}
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/* Clear the table of loaded section scripts. */
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static void
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clear_section_scripts (void)
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{
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struct program_space *pspace = current_program_space;
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struct auto_load_pspace_info *info;
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info = program_space_data (pspace, auto_load_pspace_data);
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if (info != NULL && info->loaded_scripts != NULL)
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{
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htab_delete (info->loaded_scripts);
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info->loaded_scripts = NULL;
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info->script_not_found_warning_printed = FALSE;
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}
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}
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/* Look for the auto-load script associated with OBJFILE and load it. */
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static void
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auto_load_objfile_script (struct objfile *objfile, const char *suffix)
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{
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char *realname;
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char *filename, *debugfile;
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int len;
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FILE *input;
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struct cleanup *cleanups;
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realname = gdb_realpath (objfile->name);
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len = strlen (realname);
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filename = xmalloc (len + strlen (suffix) + 1);
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memcpy (filename, realname, len);
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strcpy (filename + len, suffix);
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cleanups = make_cleanup (xfree, filename);
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make_cleanup (xfree, realname);
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input = fopen (filename, "r");
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debugfile = filename;
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if (!input && debug_file_directory)
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{
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/* Also try the same file in the separate debug info directory. */
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debugfile = xmalloc (strlen (filename)
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+ strlen (debug_file_directory) + 1);
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strcpy (debugfile, debug_file_directory);
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/* FILENAME is absolute, so we don't need a "/" here. */
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strcat (debugfile, filename);
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make_cleanup (xfree, debugfile);
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input = fopen (debugfile, "r");
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}
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if (!input && gdb_datadir)
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{
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/* Also try the same file in a subdirectory of gdb's data
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directory. */
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debugfile = xmalloc (strlen (gdb_datadir) + strlen (filename)
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+ strlen ("/auto-load") + 1);
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strcpy (debugfile, gdb_datadir);
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strcat (debugfile, "/auto-load");
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/* FILENAME is absolute, so we don't need a "/" here. */
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strcat (debugfile, filename);
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make_cleanup (xfree, debugfile);
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input = fopen (debugfile, "r");
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}
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if (input)
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{
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struct auto_load_pspace_info *pspace_info;
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/* Add this script to the hash table too so "info auto-load-scripts"
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can print it. */
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pspace_info =
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get_auto_load_pspace_data_for_loading (current_program_space);
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maybe_add_script (pspace_info->loaded_scripts, debugfile, debugfile);
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/* To preserve existing behaviour we don't check for whether the
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||
script was already in the table, and always load it.
|
||
It's highly unlikely that we'd ever load it twice,
|
||
and these scripts are required to be idempotent under multiple
|
||
loads anyway. */
|
||
source_python_script_for_objfile (objfile, input, debugfile);
|
||
fclose (input);
|
||
}
|
||
|
||
do_cleanups (cleanups);
|
||
}
|
||
|
||
/* This is a new_objfile observer callback to auto-load scripts.
|
||
|
||
Two flavors of auto-loaded scripts are supported.
|
||
1) based on the path to the objfile
|
||
2) from .debug_gdb_scripts section */
|
||
|
||
static void
|
||
auto_load_new_objfile (struct objfile *objfile)
|
||
{
|
||
if (!objfile)
|
||
{
|
||
/* OBJFILE is NULL when loading a new "main" symbol-file. */
|
||
clear_section_scripts ();
|
||
return;
|
||
}
|
||
|
||
load_auto_scripts_for_objfile (objfile);
|
||
}
|
||
|
||
/* Load any auto-loaded scripts for OBJFILE. */
|
||
|
||
void
|
||
load_auto_scripts_for_objfile (struct objfile *objfile)
|
||
{
|
||
if (auto_load_scripts && gdbpy_global_auto_load)
|
||
{
|
||
auto_load_objfile_script (objfile, GDBPY_AUTO_FILE_NAME);
|
||
auto_load_section_scripts (objfile, GDBPY_AUTO_SECTION_NAME);
|
||
}
|
||
}
|
||
|
||
/* Collect scripts to be printed in a vec. */
|
||
|
||
typedef struct loaded_script *loaded_script_ptr;
|
||
DEF_VEC_P (loaded_script_ptr);
|
||
|
||
/* Traversal function for htab_traverse.
|
||
Collect the entry if it matches the regexp. */
|
||
|
||
static int
|
||
collect_matching_scripts (void **slot, void *info)
|
||
{
|
||
struct loaded_script *script = *slot;
|
||
VEC (loaded_script_ptr) *scripts = info;
|
||
|
||
if (re_exec (script->name))
|
||
VEC_safe_push (loaded_script_ptr, scripts, script);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Print SCRIPT. */
|
||
|
||
static void
|
||
print_script (struct loaded_script *script)
|
||
{
|
||
struct ui_out *uiout = current_uiout;
|
||
struct cleanup *chain;
|
||
|
||
chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
|
||
|
||
ui_out_field_string (uiout, "loaded", script->full_path ? "Yes" : "Missing");
|
||
ui_out_field_string (uiout, "script", script->name);
|
||
ui_out_text (uiout, "\n");
|
||
|
||
/* If the name isn't the full path, print it too. */
|
||
if (script->full_path != NULL
|
||
&& strcmp (script->name, script->full_path) != 0)
|
||
{
|
||
ui_out_text (uiout, "\tfull name: ");
|
||
ui_out_field_string (uiout, "full_path", script->full_path);
|
||
ui_out_text (uiout, "\n");
|
||
}
|
||
|
||
do_cleanups (chain);
|
||
}
|
||
|
||
/* Helper for info_auto_load_scripts to sort the scripts by name. */
|
||
|
||
static int
|
||
sort_scripts_by_name (const void *ap, const void *bp)
|
||
{
|
||
const struct loaded_script *a = *(const struct loaded_script **) ap;
|
||
const struct loaded_script *b = *(const struct loaded_script **) bp;
|
||
|
||
return FILENAME_CMP (a->name, b->name);
|
||
}
|
||
|
||
/* "info auto-load-scripts" command. */
|
||
|
||
static void
|
||
info_auto_load_scripts (char *pattern, int from_tty)
|
||
{
|
||
struct ui_out *uiout = current_uiout;
|
||
struct auto_load_pspace_info *pspace_info;
|
||
struct cleanup *script_chain;
|
||
VEC (loaded_script_ptr) *scripts;
|
||
int nr_scripts;
|
||
|
||
dont_repeat ();
|
||
|
||
pspace_info = get_auto_load_pspace_data (current_program_space);
|
||
|
||
if (pattern && *pattern)
|
||
{
|
||
char *re_err = re_comp (pattern);
|
||
|
||
if (re_err)
|
||
error (_("Invalid regexp: %s"), re_err);
|
||
}
|
||
else
|
||
{
|
||
re_comp ("");
|
||
}
|
||
|
||
/* We need to know the number of rows before we build the table.
|
||
Plus we want to sort the scripts by name.
|
||
So first traverse the hash table collecting the matching scripts. */
|
||
|
||
scripts = VEC_alloc (loaded_script_ptr, 10);
|
||
script_chain = make_cleanup (VEC_cleanup (loaded_script_ptr), &scripts);
|
||
|
||
if (pspace_info != NULL && pspace_info->loaded_scripts != NULL)
|
||
{
|
||
immediate_quit++;
|
||
htab_traverse_noresize (pspace_info->loaded_scripts,
|
||
collect_matching_scripts, scripts);
|
||
immediate_quit--;
|
||
}
|
||
|
||
nr_scripts = VEC_length (loaded_script_ptr, scripts);
|
||
make_cleanup_ui_out_table_begin_end (uiout, 2, nr_scripts,
|
||
"AutoLoadedScriptsTable");
|
||
|
||
ui_out_table_header (uiout, 7, ui_left, "loaded", "Loaded");
|
||
ui_out_table_header (uiout, 70, ui_left, "script", "Script");
|
||
ui_out_table_body (uiout);
|
||
|
||
if (nr_scripts > 0)
|
||
{
|
||
int i;
|
||
loaded_script_ptr script;
|
||
|
||
qsort (VEC_address (loaded_script_ptr, scripts),
|
||
VEC_length (loaded_script_ptr, scripts),
|
||
sizeof (loaded_script_ptr), sort_scripts_by_name);
|
||
for (i = 0; VEC_iterate (loaded_script_ptr, scripts, i, script); ++i)
|
||
print_script (script);
|
||
}
|
||
|
||
do_cleanups (script_chain);
|
||
|
||
if (nr_scripts == 0)
|
||
{
|
||
if (pattern && *pattern)
|
||
ui_out_message (uiout, 0, "No auto-load scripts matching %s.\n",
|
||
pattern);
|
||
else
|
||
ui_out_message (uiout, 0, "No auto-load scripts.\n");
|
||
}
|
||
}
|
||
|
||
void
|
||
gdbpy_initialize_auto_load (void)
|
||
{
|
||
auto_load_pspace_data
|
||
= register_program_space_data_with_cleanup (auto_load_pspace_data_cleanup);
|
||
|
||
observer_attach_new_objfile (auto_load_new_objfile);
|
||
|
||
add_setshow_boolean_cmd ("auto-load-scripts", class_support,
|
||
&auto_load_scripts, _("\
|
||
Set the debugger's behaviour regarding auto-loaded scripts."), _("\
|
||
Show the debugger's behaviour regarding auto-loaded scripts."), _("\
|
||
If enabled, auto-loaded scripts are loaded when the debugger reads\n\
|
||
an executable or shared library."),
|
||
NULL, NULL,
|
||
&setlist,
|
||
&showlist);
|
||
|
||
add_info ("auto-load-scripts",
|
||
info_auto_load_scripts,
|
||
_("Print the list of automatically loaded scripts.\n\
|
||
Usage: info auto-load-scripts [REGEXP]"));
|
||
}
|
||
|
||
#else /* ! HAVE_PYTHON */
|
||
|
||
void
|
||
load_auto_scripts_for_objfile (struct objfile *objfile)
|
||
{
|
||
}
|
||
|
||
#endif /* ! HAVE_PYTHON */
|