target_has_stack.
* mi/mi-main.c (mi_execute_command): Avoid calling inferior_thread
when there is no thread selected.
(mi_cmd_execute): Don't special case commands that can run without
a valid selected thread.
* top.c (execute_command): Don't special case commands that can
run without a valid selected thread. Use has_stack_frames.
* infcmd.c (ensure_valid_thread): New.
(continue_1, step_1, jump_command, signal_command): Use it.
(detach_command): Error out if there's no selected thread/inferior.
* thread.c (print_thread_info): Allow having no thread selected.
(switch_to_thread): Don't read the PC if there is no current thread.
(do_restore_current_thread_cleanup): Don't record the current
frame if there is no current thread.
(make_cleanup_restore_current_thread): Don't read frame info if
there is no selected thread.
(_initialize_thread): Don't mark commands as
"no_selected_thread_ok".
* frame.c (get_current_frame): Error out if there is no valid
selected thread.
(has_stack_frames): Return false if there is no valid
selected thread.
* cli/cli-cmds.c (init_cli_cmds): Don't mark commands as
"no_selected_thread_ok".
* cli/cli-decode.c (set_cmd_no_selected_thread_ok)
(get_cmd_no_selected_thread_ok): Delete.
* cli/cli-decode.h (CMD_NO_SELECTED_THREAD_OK): Delete.
(set_cmd_no_selected_thread_ok, get_cmd_no_selected_thread_ok):
Delete declaration.
* stack.c (get_selected_block): Use has_stack_frames.
PR gdb/1815:
* cli/cli-decode.c (delete_cmd): Forward declare.
(delete_cmd): Now static. Change return type. Remove command
from alias chain. Rewrite.
(add_cmd): Initialize new fields. Update cmd_pointer on all
aliases.
(add_alias_cmd): Put command on alias chain.
* command.h (delete_cmd): Don't declare.
* cli/cli-decode.h (delete_cmd): Don't declare.
(struct cmd_list_element) <aliases, alias_chain>: New fields.
gdb/testsuite
* gdb.base/commands.exp (redefine_backtrace_test): New proc.
Call it.
* thread.c (enum thread_state): New.
(thread_state main_thread_running): Delete, in favor of...
(thread_state main_thread_state): ... this. Update throughout.
(clear_thread_inferior_resources): New, split from free_thread.
(free_thread): Call clear_thread_inferior_resources.
(init_thread_list): Set main thread to stopped state.
(add_thread_silent): Take care of PTID reuses.
(delete_thread): If deleting inferior_ptid or a thread with
refcount > 0, mark it as exited, but still keep it in the list.
Only notify of thread exits, if we haven't done so yet.
(iterate_over_threads): Make it safe to delete threads while
iterating over them.
(do_captured_list_thread_ids): Don't account for exited threads.
(thread_alive): Check for the THREAD_EXITED state, and don't set
ptid to -1 on exited threads.
(set_running): Update to account for extra possible states.
(is_thread_state): New.
(is_stopped, is_exited): New.
(is_running): Implement in terms of is_thread_state.
(any_running): Update.
(print_thread_info): Update. Account for exited threads. Don't
warn about missed frame restoring here, its done in the cleanup.
(switch_to_thread): Don't read from a thread that has gone.
(restore_current_thread): In non-stop mode, do a full context
switch.
(restore_selected_frame): Add a frame_level argument. Rewrite.
(struct current_thread_cleanup): Add selected_frame_level and
was_stopped members.
(do_restore_current_thread_cleanup): Check if thread was stopped
and still is, and if the target has registers, stack and memory
before restoring the selected frame. Don't delete the cleanup
argument here.
(restore_current_thread_cleanup_dtor): New.
(make_cleanup_restore_current_thread): Remove all arguments.
Rewrite.
(thread_apply_all_command): Update. Prune threads.
(thread_apply_command): Update.
(thread_command): Account for currently selected exited thread.
(do_captured_thread_select): Check for a running thread. Prune
threads.
(_initialize_thread): Make "info threads", "thread", "thread
apply", and "thread apply all" appliable without a selected thread.
* gdbthread.h (struct thread_info): Replace running_ by state_.
Add refcount.
(is_exited, is_stopped): Declare.
(make_cleanup_restore_current_thread): Remove all arguments.
* infrun.c: Include "event-top.h".
(fetch_inferior_event): In non-stop mode, restore selected thread
and frame after handling the event and running breakpoint
commands. Display GDB prompt if needed.
(normal_stop): In non-stop mode, don't print thread switching
notice.
* cli/cli-decode.c (set_cmd_no_selected_thread_ok)
(get_cmd_no_selected_thread_ok): New.
* cli/cli-decode.h (CMD_NO_SELECTED_THREAD_OK): New.
(set_cmd_no_selected_thread_ok, get_cmd_no_selected_thread_ok):
Declare.
* cli/cli-cmds.c: Set "pwd", "help", "info", "show" as
no-selected-thread ok.
* top.c (execute_command): Check for non no-selected-thread-ok
commands.
* linux-nat.c (struct saved_ptids, threads_to_delete)
(record_dead_thread, prune_lwps): Delete.
(exit_lwp): Unconditionally delete thread.
(linux_nat_resume): Remove prune_lwps call.
* infcmd.c (proceed_thread_callback): Check if !is_stopped instead
of is_running. Adjust to make_cleanup_restore_current_thread
interface change.
* mi/mi-main.c (mi_cmd_execute): Only allow a few commands if the
selected thread has exited.
* inf-loop.c (inferior_event_handler): Don't display the prompt
here.
* varobj.c (c_value_of_root): Update.
* defs.h (make_cleanup_dtor): Declare.
* utils.c (make_cleanup_dtor): New.
* Makefile.in (infrun.o): Depend on $(event_top_h).
(set_cmd_async_ok, get_cmd_async_ok): Declare.
* cli/cli-decode.c (set_cmd_async_ok): New function.
(get_cmd_async_ok): New function.
* cli/cli-cmds.c (init_cli_cmds): Mark "pwd", "help", "info", and
"show" as async-ok.
* top.c (execute_command): Use get_cmd_async_ok.
* infcmd.c: Include cli/cli-decode.h.
(_initialize_infcmd): Mark "interrupt" as async-ok.
* Makefile.in (infcmd.o): Depend on cli_decode_h.
(set_cmd_context, get_cmd_context): Declare.
* cli/cli-decode.h: Ditto.
* cli/cli-decode.c (get_cmd_context): New function.
(set_cmd_context): New function.
(add_cmd): Initialize context.
Part of fixing PR gdb/145 and PR gdb/146.
* cli/cli-decode.c: New file. Handle lists of commands, their decoding
and documentation.
(add_cmd, deprecate_cmd, add_abbrev_cmd, add_alias_cmd, add_prefix_cmd,
add_abbrev_prefix_cmd, not_just_help_class_command, empty_sfunc,
add_set_cmd, add_set_enum_cmd, add_set_auto_boolean_cmd,
add_show_from_set, delete_cmd, apropos_cmd, help_cmd, help_list,
help_all, print_doc_line, help_cmd_list, find_cmd, lookup_cmd_1,
undef_cmd_error, lookup_cmd, deprecated_cmd_warning,
lookup_cmd_composition, complete_on_cmdlist, complete_on_enum):
Moved here from command.c.
(add_info, add_info_alias, add_com, add_com_alias): Moved here from
top.c.
* cli/cli-decode.h: Definitions/declarations for the above.
* cli/cli-cmds.c: New file. GDB CLI commands.
(error_no_arg, info_command, show_command, help_command, show_version,
quit_command, pwd_command, cd_command, echo_command, shell_escape,
make_command, show_user, set_debug, show_debug, init_cmd_lists):
Moved here from top.c.
(apropos_command): Moved here from command.c.
(complete_command, source_command): Moved here (part) from top.c.
(is_complete_command): New function. Checks if a command is the
"complete" command.
(init_cli_cmds): New function. Add commands to the CLI (from code
previously in top.c.
* cli/cli-cmds.h: Definitions/declarations for the above.
* cli/cli-script.c: New file. GDB CLI command scripting.
(build_command_line, get_command_line, print_command_lines,
print_command_line, execute_user_command, execute_control_command,
while_command, if_command, arg_cleanup, setup_user_args, locate_arg,
insert_args, realloc_body_list, read_next_line,
recurse_read_control_structure, read_command_lines, free_command_lines,
do_free_command_lines_cleanup, make_cleanup_free_command_lines,
validate_comname, user_defined_command, define_command,
document_command, source_cleanup_lines, do_fclose_cleanup,
show_user_1): Moved here from top.c.
(script_from_file): New function. Implements execution of a script
contained in a file (part of code for the source_command() that used
to exist in top.c).
* cli/cli-script.h: Definitions/declarations for the above.
* cli/cli-setshow.c: New file. Handle set and show GDB CLI commands.
(parse_auto_binary_operation, parse_binary_operation,
do_setshow_command, cmd_show_list): Moved here from command.c.
* cli/cli-setshow.h: Definitions/declarations for the above.
* top.c: Remove all CLI code, except the command loop.
(gdb_init): Call init_cli_cmds().
* command.c: Remove obsolete file.
* command.h: Mark as DEPRECATED.
* gdbcmd.h: Ditto.
* call-cmds.h: Ditto.
* Makefile.in (SFILES): Remove command.c.
(COMMON_OBS): Remove command.o.
(command.o): Remove obsolete target.
(cli_decode_h, cli_cmds_h, cli_script_h, cli_setshow_h): New macros.
Refer to CLI header files.
(cli-decode.o, cli-cmds.o, cli-setshow.o, cli-script.o): New targets.
(SUBDIR_CLI_OBS, SUBDIR_CLI_SRCS, SUBDIR_CLI_DEPS, SUBDIR_CLI_INITS,
SUBDIR_CLI_LDFLAGS, SUBDIR_CLI_CFLAGS, SUBDIR_CLI_ALL, SUBDIR_CLI_CLEAN,
SUBDIR_CLI_INSTALL, SUBDIR_CLI_UNINSTALL): New macros for new cli
subdirectory.
* configure.in (enable_gdbcli): New option. Include the CLI in the
executable (cannot be disabled yet).
(CONFIG_OBS, CONFIG_DEPS, CONFIG_SRCS, CONFIG_INITS, ENABLE_CFLAGS,
CONFIG_ALL, CONFIG_CLEAN, CONFIG_INSTALL, CONFIG_UNINSTALL): Add
the corresponding SUBDIR_CLI_* macros if CLI requested.
* configure: Regenerate.
