X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Finfcmd.c;h=0ad9b916779c9c8c2f3b57d69b804f87e9abd2dc;hb=268a13a5a3f7c6b9b6ffc5ac2d1b24eb41f3fbdc;hp=14d51fd47106791c7e09fb3ccbe83bc8a2450425;hpb=7eb895307f53af3435440d3fe67c0e4e679d99b2;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/infcmd.c b/gdb/infcmd.c index 14d51fd471..0ad9b91677 100644 --- a/gdb/infcmd.c +++ b/gdb/infcmd.c @@ -1,6 +1,6 @@ /* Memory-access and commands for "inferior" process, for GDB. - Copyright (C) 1986-2016 Free Software Foundation, Inc. + Copyright (C) 1986-2019 Free Software Foundation, Inc. This file is part of GDB. @@ -25,7 +25,7 @@ #include "frame.h" #include "inferior.h" #include "infrun.h" -#include "environ.h" +#include "gdbsupport/environ.h" #include "value.h" #include "gdbcmd.h" #include "symfile.h" @@ -42,7 +42,7 @@ #include "block.h" #include "solib.h" #include -#include "observer.h" +#include "observable.h" #include "target-descriptions.h" #include "user-regs.h" #include "cli/cli-decode.h" @@ -56,48 +56,16 @@ #include "cli/cli-utils.h" #include "infcall.h" #include "thread-fsm.h" +#include "top.h" +#include "interps.h" +#include "gdbsupport/gdb_optional.h" +#include "source.h" /* Local functions: */ -static void nofp_registers_info (char *, int); - static void until_next_command (int); -static void until_command (char *, int); - -static void path_info (char *, int); - -static void path_command (char *, int); - -static void unset_command (char *, int); - -static void float_info (char *, int); - -static void disconnect_command (char *, int); - -static void unset_environment_command (char *, int); - -static void set_environment_command (char *, int); - -static void environment_info (char *, int); - -static void program_info (char *, int); - -static void finish_command (char *, int); - -static void signal_command (char *, int); - -static void jump_command (char *, int); - -static void step_1 (int, int, char *); - -static void next_command (char *, int); - -static void step_command (char *, int); - -static void run_command (char *, int); - -void _initialize_infcmd (void); +static void step_1 (int, int, const char *); #define ERROR_NO_INFERIOR \ if (!target_has_execution) error (_("The program is not being run.")); @@ -110,6 +78,10 @@ void _initialize_infcmd (void); static char *inferior_args_scratch; +/* Scratch area where the new cwd will be stored by 'set cwd'. */ + +static char *inferior_cwd_scratch; + /* Scratch area where 'set inferior-tty' will store user-provided value. We'll immediate copy it into per-inferior storage. */ @@ -122,10 +94,6 @@ static char *inferior_io_terminal_scratch; ptid_t inferior_ptid; -/* Address at which inferior stopped. */ - -CORE_ADDR stop_pc; - /* Nonzero if stopped due to completion of a stack dummy routine. */ enum stop_stack_kind stop_stack_dummy; @@ -149,7 +117,11 @@ void set_inferior_io_terminal (const char *terminal_name) { xfree (current_inferior ()->terminal); - current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0; + + if (terminal_name != NULL && *terminal_name != '\0') + current_inferior ()->terminal = xstrdup (terminal_name); + else + current_inferior ()->terminal = NULL; } const char * @@ -159,7 +131,7 @@ get_inferior_io_terminal (void) } static void -set_inferior_tty_command (char *args, int from_tty, +set_inferior_tty_command (const char *args, int from_tty, struct cmd_list_element *c) { /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. @@ -182,7 +154,7 @@ show_inferior_tty_command (struct ui_file *file, int from_tty, "is \"%s\".\n"), inferior_io_terminal); } -char * +const char * get_inferior_args (void) { if (current_inferior ()->argc != 0) @@ -205,7 +177,7 @@ get_inferior_args (void) NEWARGS is not transferred. */ void -set_inferior_args (char *newargs) +set_inferior_args (const char *newargs) { xfree (current_inferior ()->args); current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; @@ -223,7 +195,7 @@ set_inferior_args_vector (int argc, char **argv) /* Notice when `set args' is run. */ static void -set_args_command (char *args, int from_tty, struct cmd_list_element *c) +set_args_command (const char *args, int from_tty, struct cmd_list_element *c) { /* CLI has assigned the user-provided value to inferior_args_scratch. Now route it to current inferior. */ @@ -241,6 +213,60 @@ show_args_command (struct ui_file *file, int from_tty, deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); } +/* See gdbsupport/common-inferior.h. */ + +void +set_inferior_cwd (const char *cwd) +{ + struct inferior *inf = current_inferior (); + + gdb_assert (inf != NULL); + + if (cwd == NULL) + inf->cwd.reset (); + else + inf->cwd.reset (xstrdup (cwd)); +} + +/* See gdbsupport/common-inferior.h. */ + +const char * +get_inferior_cwd () +{ + return current_inferior ()->cwd.get (); +} + +/* Handle the 'set cwd' command. */ + +static void +set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c) +{ + if (*inferior_cwd_scratch == '\0') + set_inferior_cwd (NULL); + else + set_inferior_cwd (inferior_cwd_scratch); +} + +/* Handle the 'show cwd' command. */ + +static void +show_cwd_command (struct ui_file *file, int from_tty, + struct cmd_list_element *c, const char *value) +{ + const char *cwd = get_inferior_cwd (); + + if (cwd == NULL) + fprintf_filtered (gdb_stdout, + _("\ +You have not set the inferior's current working directory.\n\ +The inferior will inherit GDB's cwd if native debugging, or the remote\n\ +server's cwd if remote debugging.\n")); + else + fprintf_filtered (gdb_stdout, + _("Current working directory that will be used " + "when starting the inferior is \"%s\".\n"), cwd); +} + /* Compute command-line string given argument vector. This does the same shell processing as fork_inferior. */ @@ -255,14 +281,14 @@ construct_inferior_arguments (int argc, char **argv) #ifdef __MINGW32__ /* This holds all the characters considered special to the Windows shells. */ - char *special = "\"!&*|[]{}<>?`~^=;, \t\n"; - const char quote = '"'; + static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n"; + static const char quote = '"'; #else /* This holds all the characters considered special to the typical Unix shells. We include `^' because the SunOS /bin/sh treats it as a synonym for `|'. */ - char *special = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; - const char quote = '\''; + static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; + static const char quote = '\''; #endif int i; int length = 0; @@ -368,7 +394,7 @@ construct_inferior_arguments (int argc, char **argv) NULL is returned. *BG_CHAR_P is an output boolean that indicates whether the '&' character was found. */ -static char * +static gdb::unique_xmalloc_ptr strip_bg_char (const char *args, int *bg_char_p) { const char *p; @@ -388,13 +414,14 @@ strip_bg_char (const char *args, int *bg_char_p) *bg_char_p = 1; if (p != args) - return savestring (args, p - args); + return gdb::unique_xmalloc_ptr + (savestring (args, p - args)); else - return NULL; + return gdb::unique_xmalloc_ptr (nullptr); } *bg_char_p = 0; - return xstrdup (args); + return make_unique_xstrdup (args); } /* Common actions to take after creating any sort of inferior, by any @@ -406,7 +433,7 @@ post_create_inferior (struct target_ops *target, int from_tty) { /* Be sure we own the terminal in case write operations are performed. */ - target_terminal_ours_for_output (); + target_terminal::ours_for_output (); /* If the target hasn't taken care of this already, do it now. Targets which need to access registers during to_open, @@ -417,17 +444,18 @@ post_create_inferior (struct target_ops *target, int from_tty) /* Now that we know the register layout, retrieve current PC. But if the PC is unavailable (e.g., we're opening a core file with missing registers info), ignore it. */ - stop_pc = 0; - TRY + thread_info *thr = inferior_thread (); + + thr->suspend.stop_pc = 0; + try { - stop_pc = regcache_read_pc (get_current_regcache ()); + thr->suspend.stop_pc = regcache_read_pc (get_current_regcache ()); } - CATCH (ex, RETURN_MASK_ERROR) + catch (const gdb_exception_error &ex) { if (ex.error != NOT_AVAILABLE_ERROR) - throw_exception (ex); + throw; } - END_CATCH if (exec_bfd) { @@ -452,7 +480,7 @@ post_create_inferior (struct target_ops *target, int from_tty) /* If the solist is global across processes, there's no need to refetch it here. */ if (!gdbarch_has_global_solist (target_gdbarch ())) - solib_add (NULL, 0, target, auto_solib_add); + solib_add (NULL, 0, auto_solib_add); } } @@ -468,7 +496,7 @@ post_create_inferior (struct target_ops *target, int from_tty) if the now pushed target supports hardware watchpoints. */ breakpoint_re_set (); - observer_notify_inferior_created (target, from_tty); + gdb::observers::inferior_created.notify (target, from_tty); } /* Kill the inferior if already running. This function is designed @@ -479,7 +507,7 @@ post_create_inferior (struct target_ops *target, int from_tty) static void kill_if_already_running (int from_tty) { - if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) + if (inferior_ptid != null_ptid && target_has_execution) { /* Bail out before killing the program if we will not be able to restart it. */ @@ -500,7 +528,7 @@ prepare_execution_command (struct target_ops *target, int background) { /* If we get a request for running in the bg but the target doesn't support it, error out. */ - if (background && !target->to_can_async_p (target)) + if (background && !target->can_async_p ()) error (_("Asynchronous execution not supported on this target.")); if (!background) @@ -509,24 +537,34 @@ prepare_execution_command (struct target_ops *target, int background) simulate synchronous (fg) execution. Note no cleanup is necessary for this. stdin is re-enabled whenever an error reaches the top level. */ - async_disable_stdin (); + all_uis_on_sync_execution_starting (); } } -/* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert - a temporary breakpoint at the begining of the main program before - running the program. */ +/* Determine how the new inferior will behave. */ + +enum run_how + { + /* Run program without any explicit stop during startup. */ + RUN_NORMAL, + + /* Stop at the beginning of the program's main function. */ + RUN_STOP_AT_MAIN, + + /* Stop at the first instruction of the program. */ + RUN_STOP_AT_FIRST_INSN + }; + +/* Implement the "run" command. Force a stop during program start if + requested by RUN_HOW. */ static void -run_command_1 (char *args, int from_tty, int tbreak_at_main) +run_command_1 (const char *args, int from_tty, enum run_how run_how) { - char *exec_file; - struct cleanup *old_chain; - ptid_t ptid; + const char *exec_file; struct ui_out *uiout = current_uiout; struct target_ops *run_target; int async_exec; - struct cleanup *args_chain; dont_repeat (); @@ -549,8 +587,8 @@ run_command_1 (char *args, int from_tty, int tbreak_at_main) reopen_exec_file (); reread_symbols (); - args = strip_bg_char (args, &async_exec); - args_chain = make_cleanup (xfree, args); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (args, &async_exec); + args = stripped.get (); /* Do validation and preparation before possibly changing anything in the inferior. */ @@ -559,16 +597,19 @@ run_command_1 (char *args, int from_tty, int tbreak_at_main) prepare_execution_command (run_target, async_exec); - if (non_stop && !run_target->to_supports_non_stop (run_target)) + if (non_stop && !run_target->supports_non_stop ()) error (_("The target does not support running in non-stop mode.")); /* Done. Can now set breakpoints, change inferior args, etc. */ - /* Insert the temporary breakpoint if a location was specified. */ - if (tbreak_at_main) - tbreak_command (main_name (), 0); + /* Insert temporary breakpoint in main function if requested. */ + if (run_how == RUN_STOP_AT_MAIN) + { + std::string arg = string_printf ("-qualified %s", main_name ()); + tbreak_command (arg.c_str (), 0); + } - exec_file = (char *) get_exec_file (0); + exec_file = get_exec_file (0); /* We keep symbols from add-symbol-file, on the grounds that the user might want to add some symbols before running the program @@ -584,26 +625,24 @@ run_command_1 (char *args, int from_tty, int tbreak_at_main) if (from_tty) { - ui_out_field_string (uiout, NULL, "Starting program"); - ui_out_text (uiout, ": "); + uiout->field_string (NULL, "Starting program"); + uiout->text (": "); if (exec_file) - ui_out_field_string (uiout, "execfile", exec_file); - ui_out_spaces (uiout, 1); + uiout->field_string ("execfile", exec_file); + uiout->spaces (1); /* We call get_inferior_args() because we might need to compute the value now. */ - ui_out_field_string (uiout, "infargs", get_inferior_args ()); - ui_out_text (uiout, "\n"); - ui_out_flush (uiout); + uiout->field_string ("infargs", get_inferior_args ()); + uiout->text ("\n"); + uiout->flush (); } - /* Done with ARGS. */ - do_cleanups (args_chain); - /* We call get_inferior_args() because we might need to compute the value now. */ - run_target->to_create_inferior (run_target, exec_file, get_inferior_args (), - environ_vector (current_inferior ()->environment), - from_tty); + run_target->create_inferior (exec_file, + std::string (get_inferior_args ()), + current_inferior ()->environment.envp (), + from_tty); /* to_create_inferior should push the target, so after this point we shouldn't refer to run_target again. */ run_target = NULL; @@ -614,15 +653,23 @@ run_command_1 (char *args, int from_tty, int tbreak_at_main) events --- the frontend shouldn't see them as stopped. In all-stop, always finish the state of all threads, as we may be resuming more than just the new process. */ - if (non_stop) - ptid = pid_to_ptid (ptid_get_pid (inferior_ptid)); - else - ptid = minus_one_ptid; - old_chain = make_cleanup (finish_thread_state_cleanup, &ptid); + ptid_t finish_ptid = (non_stop + ? ptid_t (current_inferior ()->pid) + : minus_one_ptid); + scoped_finish_thread_state finish_state (finish_ptid); /* Pass zero for FROM_TTY, because at this point the "run" command has done its thing; now we are setting up the running program. */ - post_create_inferior (¤t_target, 0); + post_create_inferior (current_top_target (), 0); + + /* Queue a pending event so that the program stops immediately. */ + if (run_how == RUN_STOP_AT_FIRST_INSN) + { + thread_info *thr = inferior_thread (); + thr->suspend.waitstatus_pending_p = 1; + thr->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED; + thr->suspend.waitstatus.value.sig = GDB_SIGNAL_0; + } /* Start the target running. Do not use -1 continuation as it would skip breakpoint right at the entry point. */ @@ -630,20 +677,20 @@ run_command_1 (char *args, int from_tty, int tbreak_at_main) /* Since there was no error, there's no need to finish the thread states here. */ - discard_cleanups (old_chain); + finish_state.release (); } static void -run_command (char *args, int from_tty) +run_command (const char *args, int from_tty) { - run_command_1 (args, from_tty, 0); + run_command_1 (args, from_tty, RUN_NORMAL); } /* Start the execution of the program up until the beginning of the main program. */ static void -start_command (char *args, int from_tty) +start_command (const char *args, int from_tty) { /* Some languages such as Ada need to search inside the program minimal symbols for the location where to put the temporary @@ -652,7 +699,16 @@ start_command (char *args, int from_tty) error (_("No symbol table loaded. Use the \"file\" command.")); /* Run the program until reaching the main procedure... */ - run_command_1 (args, from_tty, 1); + run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); +} + +/* Start the execution of the program stopping at the first + instruction. */ + +static void +starti_command (const char *args, int from_tty) +{ + run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); } static int @@ -667,10 +723,10 @@ proceed_thread_callback (struct thread_info *thread, void *arg) much. If/when GDB gains a way to tell the target `hold this thread stopped until I say otherwise', then we can optimize this. */ - if (!is_stopped (thread->ptid)) + if (thread->state != THREAD_STOPPED) return 0; - switch_to_thread (thread->ptid); + switch_to_thread (thread); clear_proceed_status (0); proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); return 0; @@ -679,8 +735,8 @@ proceed_thread_callback (struct thread_info *thread, void *arg) static void ensure_valid_thread (void) { - if (ptid_equal (inferior_ptid, null_ptid) - || is_exited (inferior_ptid)) + if (inferior_ptid == null_ptid + || inferior_thread ()->state == THREAD_EXITED) error (_("Cannot execute this command without a live selected thread.")); } @@ -709,7 +765,7 @@ error_is_running (void) static void ensure_not_running (void) { - if (is_running (inferior_ptid)) + if (inferior_thread ()->state == THREAD_RUNNING) error_is_running (); } @@ -723,14 +779,14 @@ continue_1 (int all_threads) { /* Don't error out if the current thread is running, because there may be other stopped threads. */ - struct cleanup *old_chain; - /* Backup current thread and selected frame. */ - old_chain = make_cleanup_restore_current_thread (); + /* Backup current thread and selected frame and restore on scope + exit. */ + scoped_restore_current_thread restore_thread; iterate_over_threads (proceed_thread_callback, NULL); - if (sync_execution) + if (current_ui->prompt_state == PROMPT_BLOCKED) { /* If all threads in the target were already running, proceed_thread_callback ends up never calling proceed, @@ -745,11 +801,8 @@ continue_1 (int all_threads) Continuing. */ - target_terminal_inferior (); + target_terminal::inferior (); } - - /* Restore selected ptid. */ - do_cleanups (old_chain); } else { @@ -763,19 +816,16 @@ continue_1 (int all_threads) /* continue [-a] [proceed-count] [&] */ static void -continue_command (char *args, int from_tty) +continue_command (const char *args, int from_tty) { int async_exec; int all_threads = 0; - struct cleanup *args_chain; ERROR_NO_INFERIOR; /* Find out whether we must run in the background. */ - args = strip_bg_char (args, &async_exec); - args_chain = make_cleanup (xfree, args); - - prepare_execution_command (¤t_target, async_exec); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (args, &async_exec); + args = stripped.get (); if (args != NULL) { @@ -805,7 +855,7 @@ continue_command (char *args, int from_tty) struct thread_info *tp; if (non_stop) - tp = find_thread_ptid (inferior_ptid); + tp = inferior_thread (); else { ptid_t last_ptid; @@ -837,8 +887,16 @@ continue_command (char *args, int from_tty) } } - /* Done with ARGS. */ - do_cleanups (args_chain); + ERROR_NO_INFERIOR; + ensure_not_tfind_mode (); + + if (!non_stop || !all_threads) + { + ensure_valid_thread (); + ensure_not_running (); + } + + prepare_execution_command (current_top_target (), async_exec); if (from_tty) printf_filtered (_("Continuing.\n")); @@ -851,21 +909,20 @@ continue_command (char *args, int from_tty) static void set_step_frame (void) { - struct symtab_and_line sal; - CORE_ADDR pc; - struct frame_info *frame = get_current_frame (); - struct thread_info *tp = inferior_thread (); + frame_info *frame = get_current_frame (); - find_frame_sal (frame, &sal); + symtab_and_line sal = find_frame_sal (frame); set_step_info (frame, sal); - pc = get_frame_pc (frame); + + CORE_ADDR pc = get_frame_pc (frame); + thread_info *tp = inferior_thread (); tp->control.step_start_function = find_pc_function (pc); } /* Step until outside of current statement. */ static void -step_command (char *count_string, int from_tty) +step_command (const char *count_string, int from_tty) { step_1 (0, 0, count_string); } @@ -873,7 +930,7 @@ step_command (char *count_string, int from_tty) /* Likewise, but skip over subroutine calls as if single instructions. */ static void -next_command (char *count_string, int from_tty) +next_command (const char *count_string, int from_tty) { step_1 (1, 0, count_string); } @@ -881,32 +938,22 @@ next_command (char *count_string, int from_tty) /* Likewise, but step only one instruction. */ static void -stepi_command (char *count_string, int from_tty) +stepi_command (const char *count_string, int from_tty) { step_1 (0, 1, count_string); } static void -nexti_command (char *count_string, int from_tty) +nexti_command (const char *count_string, int from_tty) { step_1 (1, 1, count_string); } -void -delete_longjmp_breakpoint_cleanup (void *arg) -{ - int thread = * (int *) arg; - delete_longjmp_breakpoint (thread); -} - /* Data for the FSM that manages the step/next/stepi/nexti commands. */ -struct step_command_fsm +struct step_command_fsm : public thread_fsm { - /* The base class. */ - struct thread_fsm thread_fsm; - /* How many steps left in a "step N"-like command. */ int count; @@ -916,39 +963,16 @@ struct step_command_fsm /* If true, this is a stepi/nexti, otherwise a step/step. */ int single_inst; - /* The thread that the command was run on. */ - int thread; -}; - -static void step_command_fsm_clean_up (struct thread_fsm *self); -static int step_command_fsm_should_stop (struct thread_fsm *self); -static enum async_reply_reason - step_command_fsm_async_reply_reason (struct thread_fsm *self); - -/* step_command_fsm's vtable. */ + explicit step_command_fsm (struct interp *cmd_interp) + : thread_fsm (cmd_interp) + { + } -static struct thread_fsm_ops step_command_fsm_ops = -{ - NULL, - step_command_fsm_clean_up, - step_command_fsm_should_stop, - NULL, /* return_value */ - step_command_fsm_async_reply_reason, + void clean_up (struct thread_info *thread) override; + bool should_stop (struct thread_info *thread) override; + enum async_reply_reason do_async_reply_reason () override; }; -/* Allocate a new step_command_fsm. */ - -static struct step_command_fsm * -new_step_command_fsm (void) -{ - struct step_command_fsm *sm; - - sm = XCNEW (struct step_command_fsm); - thread_fsm_ctor (&sm->thread_fsm, &step_command_fsm_ops); - - return sm; -} - /* Prepare for a step/next/etc. command. Any target resource allocated here is undone in the FSM's clean_up method. */ @@ -960,7 +984,6 @@ step_command_fsm_prepare (struct step_command_fsm *sm, sm->skip_subroutines = skip_subroutines; sm->single_inst = single_inst; sm->count = count; - sm->thread = thread->global_num; /* Leave the si command alone. */ if (!sm->single_inst || sm->skip_subroutines) @@ -972,11 +995,10 @@ step_command_fsm_prepare (struct step_command_fsm *sm, static int prepare_one_step (struct step_command_fsm *sm); static void -step_1 (int skip_subroutines, int single_inst, char *count_string) +step_1 (int skip_subroutines, int single_inst, const char *count_string) { int count; int async_exec; - struct cleanup *args_chain; struct thread_info *thr; struct step_command_fsm *step_sm; @@ -985,23 +1007,21 @@ step_1 (int skip_subroutines, int single_inst, char *count_string) ensure_valid_thread (); ensure_not_running (); - count_string = strip_bg_char (count_string, &async_exec); - args_chain = make_cleanup (xfree, count_string); + gdb::unique_xmalloc_ptr stripped + = strip_bg_char (count_string, &async_exec); + count_string = stripped.get (); - prepare_execution_command (¤t_target, async_exec); + prepare_execution_command (current_top_target (), async_exec); count = count_string ? parse_and_eval_long (count_string) : 1; - /* Done with ARGS. */ - do_cleanups (args_chain); - clear_proceed_status (1); /* Setup the execution command state machine to handle all the COUNT steps. */ thr = inferior_thread (); - step_sm = new_step_command_fsm (); - thr->thread_fsm = &step_sm->thread_fsm; + step_sm = new step_command_fsm (command_interp ()); + thr->thread_fsm = step_sm; step_command_fsm_prepare (step_sm, skip_subroutines, single_inst, count, thr); @@ -1014,11 +1034,15 @@ step_1 (int skip_subroutines, int single_inst, char *count_string) proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); else { + int proceeded; + /* Stepped into an inline frame. Pretend that we've stopped. */ - thread_fsm_clean_up (thr->thread_fsm); - normal_stop (); - inferior_event_handler (INF_EXEC_COMPLETE, NULL); + thr->thread_fsm->clean_up (thr); + proceeded = normal_stop (); + if (!proceeded) + inferior_event_handler (INF_EXEC_COMPLETE, NULL); + all_uis_check_sync_execution_done (); } } @@ -1028,41 +1052,36 @@ step_1 (int skip_subroutines, int single_inst, char *count_string) return control to the user. If count is > 1, returns false, as we will need to keep going. */ -static int -step_command_fsm_should_stop (struct thread_fsm *self) +bool +step_command_fsm::should_stop (struct thread_info *tp) { - struct step_command_fsm *sm = (struct step_command_fsm *) self; - struct thread_info *tp = find_thread_global_id (sm->thread); - if (tp->control.stop_step) { /* There are more steps to make, and we did stop due to ending a stepping range. Do another step. */ - if (--sm->count > 0) - return prepare_one_step (sm); + if (--count > 0) + return prepare_one_step (this); - thread_fsm_set_finished (self); + set_finished (); } - return 1; + return true; } /* Implementation of the 'clean_up' FSM method for stepping commands. */ -static void -step_command_fsm_clean_up (struct thread_fsm *self) +void +step_command_fsm::clean_up (struct thread_info *thread) { - struct step_command_fsm *sm = (struct step_command_fsm *) self; - - if (!sm->single_inst || sm->skip_subroutines) - delete_longjmp_breakpoint (sm->thread); + if (!single_inst || skip_subroutines) + delete_longjmp_breakpoint (thread->global_num); } /* Implementation of the 'async_reply_reason' FSM method for stepping commands. */ -static enum async_reply_reason -step_command_fsm_async_reply_reason (struct thread_fsm *self) +enum async_reply_reason +step_command_fsm::do_async_reply_reason () { return EXEC_ASYNC_END_STEPPING_RANGE; } @@ -1093,7 +1112,7 @@ prepare_one_step (struct step_command_fsm *sm) /* Step at an inlined function behaves like "down". */ if (!sm->skip_subroutines - && inline_skipped_frames (inferior_ptid)) + && inline_skipped_frames (tp)) { ptid_t resume_ptid; @@ -1101,7 +1120,7 @@ prepare_one_step (struct step_command_fsm *sm) resume_ptid = user_visible_resume_ptid (1); set_running (resume_ptid, 1); - step_into_inline_frame (inferior_ptid); + step_into_inline_frame (tp); sm->count--; return prepare_one_step (sm); } @@ -1128,7 +1147,7 @@ prepare_one_step (struct step_command_fsm *sm) &tp->control.step_range_end) == 0) error (_("Cannot find bounds of current function")); - target_terminal_ours_for_output (); + target_terminal::ours_for_output (); printf_filtered (_("Single stepping until exit from function %s," "\nwhich has no line number information.\n"), name); @@ -1152,7 +1171,7 @@ prepare_one_step (struct step_command_fsm *sm) } /* Done. */ - thread_fsm_set_finished (&sm->thread_fsm); + sm->set_finished (); return 1; } @@ -1160,16 +1179,13 @@ prepare_one_step (struct step_command_fsm *sm) /* Continue program at specified address. */ static void -jump_command (char *arg, int from_tty) +jump_command (const char *arg, int from_tty) { struct gdbarch *gdbarch = get_current_arch (); CORE_ADDR addr; - struct symtabs_and_lines sals; - struct symtab_and_line sal; struct symbol *fn; struct symbol *sfn; int async_exec; - struct cleanup *args_chain; ERROR_NO_INFERIOR; ensure_not_tfind_mode (); @@ -1177,25 +1193,20 @@ jump_command (char *arg, int from_tty) ensure_not_running (); /* Find out whether we must run in the background. */ - arg = strip_bg_char (arg, &async_exec); - args_chain = make_cleanup (xfree, arg); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (arg, &async_exec); + arg = stripped.get (); - prepare_execution_command (¤t_target, async_exec); + prepare_execution_command (current_top_target (), async_exec); if (!arg) error_no_arg (_("starting address")); - sals = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); - if (sals.nelts != 1) - { - error (_("Unreasonable jump request")); - } + std::vector sals + = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); + if (sals.size () != 1) + error (_("Unreasonable jump request")); - sal = sals.sals[0]; - xfree (sals.sals); - - /* Done with ARGS. */ - do_cleanups (args_chain); + symtab_and_line &sal = sals[0]; if (sal.symtab == 0 && sal.pc == 0) error (_("No source file has been specified.")); @@ -1249,11 +1260,10 @@ jump_command (char *arg, int from_tty) /* Continue program giving it specified signal. */ static void -signal_command (char *signum_exp, int from_tty) +signal_command (const char *signum_exp, int from_tty) { enum gdb_signal oursig; int async_exec; - struct cleanup *args_chain; dont_repeat (); /* Too dangerous. */ ERROR_NO_INFERIOR; @@ -1262,10 +1272,11 @@ signal_command (char *signum_exp, int from_tty) ensure_not_running (); /* Find out whether we must run in the background. */ - signum_exp = strip_bg_char (signum_exp, &async_exec); - args_chain = make_cleanup (xfree, signum_exp); + gdb::unique_xmalloc_ptr stripped + = strip_bg_char (signum_exp, &async_exec); + signum_exp = stripped.get (); - prepare_execution_command (¤t_target, async_exec); + prepare_execution_command (current_top_target (), async_exec); if (!signum_exp) error_no_arg (_("signal number")); @@ -1286,8 +1297,6 @@ signal_command (char *signum_exp, int from_tty) oursig = gdb_signal_from_command (num); } - do_cleanups (args_chain); - /* Look for threads other than the current that this command ends up resuming too (due to schedlock off), and warn if they'll get a signal delivered. "signal 0" is used to suppress a previous @@ -1296,19 +1305,15 @@ signal_command (char *signum_exp, int from_tty) of the wrong thread. */ if (!non_stop) { - struct thread_info *tp; - ptid_t resume_ptid; int must_confirm = 0; /* This indicates what will be resumed. Either a single thread, a whole process, or all threads of all processes. */ - resume_ptid = user_visible_resume_ptid (0); + ptid_t resume_ptid = user_visible_resume_ptid (0); - ALL_NON_EXITED_THREADS (tp) + for (thread_info *tp : all_non_exited_threads (resume_ptid)) { - if (ptid_equal (tp->ptid, inferior_ptid)) - continue; - if (!ptid_match (tp->ptid, resume_ptid)) + if (tp->ptid == inferior_ptid) continue; if (tp->suspend.stop_signal != GDB_SIGNAL_0 @@ -1348,7 +1353,7 @@ signal_command (char *signum_exp, int from_tty) /* Queue a signal to be delivered to the current thread. */ static void -queue_signal_command (char *signum_exp, int from_tty) +queue_signal_command (const char *signum_exp, int from_tty) { enum gdb_signal oursig; struct thread_info *tp; @@ -1388,76 +1393,48 @@ queue_signal_command (char *signum_exp, int from_tty) /* Data for the FSM that manages the until (with no argument) command. */ -struct until_next_fsm +struct until_next_fsm : public thread_fsm { - /* The base class. */ - struct thread_fsm thread_fsm; - /* The thread that as current when the command was executed. */ int thread; -}; -static int until_next_fsm_should_stop (struct thread_fsm *self); -static void until_next_fsm_clean_up (struct thread_fsm *self); -static enum async_reply_reason - until_next_fsm_async_reply_reason (struct thread_fsm *self); + until_next_fsm (struct interp *cmd_interp, int thread) + : thread_fsm (cmd_interp), + thread (thread) + { + } -/* until_next_fsm's vtable. */ - -static struct thread_fsm_ops until_next_fsm_ops = -{ - NULL, /* dtor */ - until_next_fsm_clean_up, - until_next_fsm_should_stop, - NULL, /* return_value */ - until_next_fsm_async_reply_reason, + bool should_stop (struct thread_info *thread) override; + void clean_up (struct thread_info *thread) override; + enum async_reply_reason do_async_reply_reason () override; }; -/* Allocate a new until_next_fsm. */ - -static struct until_next_fsm * -new_until_next_fsm (int thread) -{ - struct until_next_fsm *sm; - - sm = XCNEW (struct until_next_fsm); - thread_fsm_ctor (&sm->thread_fsm, &until_next_fsm_ops); - - sm->thread = thread; - - return sm; -} - /* Implementation of the 'should_stop' FSM method for the until (with no arg) command. */ -static int -until_next_fsm_should_stop (struct thread_fsm *self) +bool +until_next_fsm::should_stop (struct thread_info *tp) { - struct thread_info *tp = inferior_thread (); - if (tp->control.stop_step) - thread_fsm_set_finished (self); + set_finished (); - return 1; + return true; } /* Implementation of the 'clean_up' FSM method for the until (with no arg) command. */ -static void -until_next_fsm_clean_up (struct thread_fsm *self) +void +until_next_fsm::clean_up (struct thread_info *thread) { - struct until_next_fsm *sm = (struct until_next_fsm *) self; - - delete_longjmp_breakpoint (sm->thread); + delete_longjmp_breakpoint (thread->global_num); } /* Implementation of the 'async_reply_reason' FSM method for the until (with no arg) command. */ -static enum async_reply_reason -until_next_fsm_async_reply_reason (struct thread_fsm *self) +enum async_reply_reason +until_next_fsm::do_async_reply_reason () { return EXEC_ASYNC_END_STEPPING_RANGE; } @@ -1479,7 +1456,6 @@ until_next_command (int from_tty) struct symtab_and_line sal; struct thread_info *tp = inferior_thread (); int thread = tp->global_num; - struct cleanup *old_chain; struct until_next_fsm *sm; clear_proceed_status (0); @@ -1510,7 +1486,7 @@ until_next_command (int from_tty) { sal = find_pc_line (pc, 0); - tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); + tp->control.step_range_start = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func)); tp->control.step_range_end = sal.end; } tp->control.may_range_step = 1; @@ -1518,20 +1494,19 @@ until_next_command (int from_tty) tp->control.step_over_calls = STEP_OVER_ALL; set_longjmp_breakpoint (tp, get_frame_id (frame)); - old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); + delete_longjmp_breakpoint_cleanup lj_deleter (thread); - sm = new_until_next_fsm (tp->global_num); - tp->thread_fsm = &sm->thread_fsm; - discard_cleanups (old_chain); + sm = new until_next_fsm (command_interp (), tp->global_num); + tp->thread_fsm = sm; + lj_deleter.release (); proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); } static void -until_command (char *arg, int from_tty) +until_command (const char *arg, int from_tty) { int async_exec; - struct cleanup *args_chain; ERROR_NO_INFERIOR; ensure_not_tfind_mode (); @@ -1539,25 +1514,21 @@ until_command (char *arg, int from_tty) ensure_not_running (); /* Find out whether we must run in the background. */ - arg = strip_bg_char (arg, &async_exec); - args_chain = make_cleanup (xfree, arg); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (arg, &async_exec); + arg = stripped.get (); - prepare_execution_command (¤t_target, async_exec); + prepare_execution_command (current_top_target (), async_exec); if (arg) until_break_command (arg, from_tty, 0); else until_next_command (from_tty); - - /* Done with ARGS. */ - do_cleanups (args_chain); } static void -advance_command (char *arg, int from_tty) +advance_command (const char *arg, int from_tty) { int async_exec; - struct cleanup *args_chain; ERROR_NO_INFERIOR; ensure_not_tfind_mode (); @@ -1568,15 +1539,12 @@ advance_command (char *arg, int from_tty) error_no_arg (_("a location")); /* Find out whether we must run in the background. */ - arg = strip_bg_char (arg, &async_exec); - args_chain = make_cleanup (xfree, arg); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (arg, &async_exec); + arg = stripped.get (); - prepare_execution_command (¤t_target, async_exec); + prepare_execution_command (current_top_target (), async_exec); until_break_command (arg, from_tty, 1); - - /* Done with ARGS. */ - do_cleanups (args_chain); } /* Return the value of the result of a function at the end of a 'finish' @@ -1586,15 +1554,9 @@ advance_command (char *arg, int from_tty) struct value * get_return_value (struct value *function, struct type *value_type) { - struct regcache *stop_regs; - struct gdbarch *gdbarch; + regcache *stop_regs = get_current_regcache (); + struct gdbarch *gdbarch = stop_regs->arch (); struct value *value; - struct cleanup *cleanup; - - stop_regs = regcache_dup (get_current_regcache ()); - cleanup = make_cleanup_regcache_xfree (stop_regs); - - gdbarch = get_regcache_arch (stop_regs); value_type = check_typedef (value_type); gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); @@ -1623,8 +1585,6 @@ get_return_value (struct value *function, struct type *value_type) internal_error (__FILE__, __LINE__, _("bad switch")); } - do_cleanups (cleanup); - return value; } @@ -1653,34 +1613,31 @@ print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) if (rv->value != NULL) { struct value_print_options opts; - struct ui_file *stb; - struct cleanup *old_chain; /* Print it. */ - stb = mem_fileopen (); - old_chain = make_cleanup_ui_file_delete (stb); - ui_out_text (uiout, "Value returned is "); - ui_out_field_fmt (uiout, "gdb-result-var", "$%d", - rv->value_history_index); - ui_out_text (uiout, " = "); - get_no_prettyformat_print_options (&opts); - value_print (rv->value, stb, &opts); - ui_out_field_stream (uiout, "return-value", stb); - ui_out_text (uiout, "\n"); - do_cleanups (old_chain); + uiout->text ("Value returned is "); + uiout->field_fmt ("gdb-result-var", "$%d", + rv->value_history_index); + uiout->text (" = "); + get_user_print_options (&opts); + + if (opts.finish_print) + { + string_file stb; + value_print (rv->value, &stb, &opts); + uiout->field_stream ("return-value", stb); + } + else + uiout->field_string ("return-value", _("")); + uiout->text ("\n"); } else { - struct cleanup *oldchain; - char *type_name; - - type_name = type_to_string (rv->type); - oldchain = make_cleanup (xfree, type_name); - ui_out_text (uiout, "Value returned has type: "); - ui_out_field_string (uiout, "return-type", type_name); - ui_out_text (uiout, "."); - ui_out_text (uiout, " Cannot determine contents\n"); - do_cleanups (oldchain); + std::string type_name = type_to_string (rv->type); + uiout->text ("Value returned has type: "); + uiout->field_string ("return-type", type_name.c_str ()); + uiout->text ("."); + uiout->text (" Cannot determine contents\n"); } } @@ -1691,107 +1648,76 @@ print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) void print_return_value (struct ui_out *uiout, struct return_value_info *rv) { - if (rv->type == NULL || TYPE_CODE (rv->type) == TYPE_CODE_VOID) + if (rv->type == NULL + || TYPE_CODE (check_typedef (rv->type)) == TYPE_CODE_VOID) return; - TRY + try { /* print_return_value_1 can throw an exception in some circumstances. We need to catch this so that we still delete the breakpoint. */ print_return_value_1 (uiout, rv); } - CATCH (ex, RETURN_MASK_ALL) + catch (const gdb_exception &ex) { exception_print (gdb_stdout, ex); } - END_CATCH } /* Data for the FSM that manages the finish command. */ -struct finish_command_fsm +struct finish_command_fsm : public thread_fsm { - /* The base class. */ - struct thread_fsm thread_fsm; - - /* The thread that was current when the command was executed. */ - int thread; - /* The momentary breakpoint set at the function's return address in the caller. */ - struct breakpoint *breakpoint; + breakpoint_up breakpoint; /* The function that we're stepping out of. */ - struct symbol *function; + struct symbol *function = nullptr; /* If the FSM finishes successfully, this stores the function's return value. */ - struct return_value_info return_value; -}; + struct return_value_info return_value_info {}; -static int finish_command_fsm_should_stop (struct thread_fsm *self); -static void finish_command_fsm_clean_up (struct thread_fsm *self); -static struct return_value_info * - finish_command_fsm_return_value (struct thread_fsm *self); -static enum async_reply_reason - finish_command_fsm_async_reply_reason (struct thread_fsm *self); + explicit finish_command_fsm (struct interp *cmd_interp) + : thread_fsm (cmd_interp) + { + } -/* finish_command_fsm's vtable. */ - -static struct thread_fsm_ops finish_command_fsm_ops = -{ - NULL, /* dtor */ - finish_command_fsm_clean_up, - finish_command_fsm_should_stop, - finish_command_fsm_return_value, - finish_command_fsm_async_reply_reason, + bool should_stop (struct thread_info *thread) override; + void clean_up (struct thread_info *thread) override; + struct return_value_info *return_value () override; + enum async_reply_reason do_async_reply_reason () override; }; -/* Allocate a new finish_command_fsm. */ - -static struct finish_command_fsm * -new_finish_command_fsm (int thread) -{ - struct finish_command_fsm *sm; - - sm = XCNEW (struct finish_command_fsm); - thread_fsm_ctor (&sm->thread_fsm, &finish_command_fsm_ops); - - sm->thread = thread; - - return sm; -} - /* Implementation of the 'should_stop' FSM method for the finish commands. Detects whether the thread stepped out of the function successfully, and if so, captures the function's return value and marks the FSM finished. */ -static int -finish_command_fsm_should_stop (struct thread_fsm *self) +bool +finish_command_fsm::should_stop (struct thread_info *tp) { - struct finish_command_fsm *f = (struct finish_command_fsm *) self; - struct return_value_info *rv = &f->return_value; - struct thread_info *tp = find_thread_global_id (f->thread); + struct return_value_info *rv = &return_value_info; - if (f->function != NULL + if (function != NULL && bpstat_find_breakpoint (tp->control.stop_bpstat, - f->breakpoint) != NULL) + breakpoint.get ()) != NULL) { /* We're done. */ - thread_fsm_set_finished (self); + set_finished (); - rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (f->function)); + rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); if (rv->type == NULL) internal_error (__FILE__, __LINE__, _("finish_command: function has no target type")); - if (TYPE_CODE (rv->type) != TYPE_CODE_VOID) + if (TYPE_CODE (check_typedef (rv->type)) != TYPE_CODE_VOID) { struct value *func; - func = read_var_value (f->function, NULL, get_current_frame ()); + func = read_var_value (function, NULL, get_current_frame ()); rv->value = get_return_value (func, rv->type); if (rv->value != NULL) rv->value_history_index = record_latest_value (rv->value); @@ -1801,44 +1727,36 @@ finish_command_fsm_should_stop (struct thread_fsm *self) { /* Finishing from an inline frame, or reverse finishing. In either case, there's no way to retrieve the return value. */ - thread_fsm_set_finished (self); + set_finished (); } - return 1; + return true; } /* Implementation of the 'clean_up' FSM method for the finish commands. */ -static void -finish_command_fsm_clean_up (struct thread_fsm *self) +void +finish_command_fsm::clean_up (struct thread_info *thread) { - struct finish_command_fsm *f = (struct finish_command_fsm *) self; - - if (f->breakpoint != NULL) - { - delete_breakpoint (f->breakpoint); - f->breakpoint = NULL; - } - delete_longjmp_breakpoint (f->thread); + breakpoint.reset (); + delete_longjmp_breakpoint (thread->global_num); } /* Implementation of the 'return_value' FSM method for the finish commands. */ -static struct return_value_info * -finish_command_fsm_return_value (struct thread_fsm *self) +struct return_value_info * +finish_command_fsm::return_value () { - struct finish_command_fsm *f = (struct finish_command_fsm *) self; - - return &f->return_value; + return &return_value_info; } /* Implementation of the 'async_reply_reason' FSM method for the finish commands. */ -static enum async_reply_reason -finish_command_fsm_async_reply_reason (struct thread_fsm *self) +enum async_reply_reason +finish_command_fsm::do_async_reply_reason () { if (execution_direction == EXEC_REVERSE) return EXEC_ASYNC_END_STEPPING_RANGE; @@ -1877,11 +1795,10 @@ finish_backward (struct finish_command_fsm *sm) { struct frame_info *frame = get_selected_frame (NULL); struct gdbarch *gdbarch = get_frame_arch (frame); - struct symtab_and_line sr_sal; /* Set a step-resume at the function's entry point. Once that's hit, we'll do one more step backwards. */ - init_sal (&sr_sal); + symtab_and_line sr_sal; sr_sal.pc = sal.pc; sr_sal.pspace = get_frame_program_space (frame); insert_step_resume_breakpoint_at_sal (gdbarch, @@ -1927,15 +1844,38 @@ finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); } +/* Skip frames for "finish". */ + +static struct frame_info * +skip_finish_frames (struct frame_info *frame) +{ + struct frame_info *start; + + do + { + start = frame; + + frame = skip_tailcall_frames (frame); + if (frame == NULL) + break; + + frame = skip_unwritable_frames (frame); + if (frame == NULL) + break; + } + while (start != frame); + + return frame; +} + /* "finish": Set a temporary breakpoint at the place the selected frame will return to, then continue. */ static void -finish_command (char *arg, int from_tty) +finish_command (const char *arg, int from_tty) { struct frame_info *frame; int async_exec; - struct cleanup *args_chain; struct finish_command_fsm *sm; struct thread_info *tp; @@ -1945,17 +1885,14 @@ finish_command (char *arg, int from_tty) ensure_not_running (); /* Find out whether we must run in the background. */ - arg = strip_bg_char (arg, &async_exec); - args_chain = make_cleanup (xfree, arg); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (arg, &async_exec); + arg = stripped.get (); - prepare_execution_command (¤t_target, async_exec); + prepare_execution_command (current_top_target (), async_exec); if (arg) error (_("The \"finish\" command does not take any arguments.")); - /* Done with ARGS. */ - do_cleanups (args_chain); - frame = get_prev_frame (get_selected_frame (_("No selected frame."))); if (frame == 0) error (_("\"finish\" not meaningful in the outermost frame.")); @@ -1964,9 +1901,9 @@ finish_command (char *arg, int from_tty) tp = inferior_thread (); - sm = new_finish_command_fsm (tp->global_num); + sm = new finish_command_fsm (command_interp ()); - tp->thread_fsm = &sm->thread_fsm; + tp->thread_fsm = sm; /* Finishing from an inline frame is completely different. We don't try to show the "return value" - no way to locate it. */ @@ -1978,10 +1915,7 @@ finish_command (char *arg, int from_tty) called by that frame. We don't use the magic "1" value for step_range_end, because then infrun will think this is nexti, and not step over the rest of this inlined function call. */ - struct symtab_and_line empty_sal; - - init_sal (&empty_sal); - set_step_info (frame, empty_sal); + set_step_info (frame, {}); tp->control.step_range_start = get_frame_pc (frame); tp->control.step_range_end = tp->control.step_range_start; tp->control.step_over_calls = STEP_OVER_ALL; @@ -2025,11 +1959,7 @@ finish_command (char *arg, int from_tty) finish_backward (sm); else { - /* Ignore TAILCALL_FRAME type frames, they were executed already before - entering THISFRAME. */ - frame = skip_tailcall_frames (frame); - - frame = skip_unwritable_frames (frame); + frame = skip_finish_frames (frame); if (frame == NULL) error (_("Cannot find the caller frame.")); @@ -2040,11 +1970,10 @@ finish_command (char *arg, int from_tty) static void -program_info (char *args, int from_tty) +info_program_command (const char *args, int from_tty) { bpstat bs; int num, stat; - struct thread_info *tp; ptid_t ptid; if (!target_has_execution) @@ -2062,18 +1991,22 @@ program_info (char *args, int from_tty) get_last_target_status (&ptid, &ws); } - if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) + if (ptid == null_ptid || ptid == minus_one_ptid) + error (_("No selected thread.")); + + thread_info *tp = find_thread_ptid (ptid); + + if (tp->state == THREAD_EXITED) error (_("Invalid selected thread.")); - else if (is_running (ptid)) + else if (tp->state == THREAD_RUNNING) error (_("Selected thread is running.")); - tp = find_thread_ptid (ptid); bs = tp->control.stop_bpstat; stat = bpstat_num (&bs, &num); target_files_info (); printf_filtered (_("Program stopped at %s.\n"), - paddress (target_gdbarch (), stop_pc)); + paddress (target_gdbarch (), tp->suspend.stop_pc)); if (tp->control.stop_step) printf_filtered (_("It stopped after being stepped.\n")); else if (stat != 0) @@ -2107,11 +2040,11 @@ program_info (char *args, int from_tty) } static void -environment_info (char *var, int from_tty) +environment_info (const char *var, int from_tty) { if (var) { - char *val = get_in_environ (current_inferior ()->environment, var); + const char *val = current_inferior ()->environment.get (var); if (val) { @@ -2129,20 +2062,20 @@ environment_info (char *var, int from_tty) } else { - char **vector = environ_vector (current_inferior ()->environment); + char **envp = current_inferior ()->environment.envp (); - while (*vector) + for (int idx = 0; envp[idx] != NULL; ++idx) { - puts_filtered (*vector++); + puts_filtered (envp[idx]); puts_filtered ("\n"); } } } static void -set_environment_command (char *arg, int from_tty) +set_environment_command (const char *arg, int from_tty) { - char *p, *val, *var; + const char *p, *val; int nullset = 0; if (arg == 0) @@ -2189,34 +2122,30 @@ set_environment_command (char *arg, int from_tty) while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) p--; - var = savestring (arg, p - arg); + std::string var (arg, p - arg); if (nullset) { printf_filtered (_("Setting environment variable " "\"%s\" to null value.\n"), - var); - set_in_environ (current_inferior ()->environment, var, ""); + var.c_str ()); + current_inferior ()->environment.set (var.c_str (), ""); } else - set_in_environ (current_inferior ()->environment, var, val); - xfree (var); + current_inferior ()->environment.set (var.c_str (), val); } static void -unset_environment_command (char *var, int from_tty) +unset_environment_command (const char *var, int from_tty) { if (var == 0) { /* If there is no argument, delete all environment variables. Ask for confirmation if reading from the terminal. */ if (!from_tty || query (_("Delete all environment variables? "))) - { - free_environ (current_inferior ()->environment); - current_inferior ()->environment = make_environ (); - } + current_inferior ()->environment.clear (); } else - unset_in_environ (current_inferior ()->environment, var); + current_inferior ()->environment.unset (var); } /* Handle the execution path (PATH variable). */ @@ -2224,36 +2153,45 @@ unset_environment_command (char *var, int from_tty) static const char path_var_name[] = "PATH"; static void -path_info (char *args, int from_tty) +path_info (const char *args, int from_tty) { puts_filtered ("Executable and object file path: "); - puts_filtered (get_in_environ (current_inferior ()->environment, - path_var_name)); + puts_filtered (current_inferior ()->environment.get (path_var_name)); puts_filtered ("\n"); } /* Add zero or more directories to the front of the execution path. */ static void -path_command (char *dirname, int from_tty) +path_command (const char *dirname, int from_tty) { char *exec_path; - char *env; + const char *env; dont_repeat (); - env = get_in_environ (current_inferior ()->environment, path_var_name); + env = current_inferior ()->environment.get (path_var_name); /* Can be null if path is not set. */ if (!env) env = ""; exec_path = xstrdup (env); mod_path (dirname, &exec_path); - set_in_environ (current_inferior ()->environment, path_var_name, exec_path); + current_inferior ()->environment.set (path_var_name, exec_path); xfree (exec_path); if (from_tty) - path_info ((char *) NULL, from_tty); + path_info (NULL, from_tty); } +static void +pad_to_column (string_file &stream, int col) +{ + /* At least one space must be printed to separate columns. */ + stream.putc (' '); + const int size = stream.size (); + if (size < col) + stream.puts (n_spaces (col - size)); +} + /* Print out the register NAME with value VAL, to FILE, in the default fashion. */ @@ -2264,9 +2202,17 @@ default_print_one_register_info (struct ui_file *file, { struct type *regtype = value_type (val); int print_raw_format; + string_file format_stream; + enum tab_stops + { + value_column_1 = 15, + /* Give enough room for "0x", 16 hex digits and two spaces in + preceding column. */ + value_column_2 = value_column_1 + 2 + 16 + 2, + }; - fputs_filtered (name, file); - print_spaces_filtered (15 - strlen (name), file); + format_stream.puts (name); + pad_to_column (format_stream, value_column_1); print_raw_format = (value_entirely_available (val) && !value_optimized_out (val)); @@ -2284,15 +2230,16 @@ default_print_one_register_info (struct ui_file *file, opts.deref_ref = 1; val_print (regtype, - value_contents_for_printing (val), value_embedded_offset (val), 0, - file, 0, val, &opts, current_language); + &format_stream, 0, val, &opts, current_language); if (print_raw_format) { - fprintf_filtered (file, "\t(raw "); - print_hex_chars (file, valaddr, TYPE_LENGTH (regtype), byte_order); - fprintf_filtered (file, ")"); + pad_to_column (format_stream, value_column_2); + format_stream.puts ("(raw "); + print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), + byte_order, true); + format_stream.putc (')'); } } else @@ -2303,23 +2250,22 @@ default_print_one_register_info (struct ui_file *file, get_formatted_print_options (&opts, 'x'); opts.deref_ref = 1; val_print (regtype, - value_contents_for_printing (val), value_embedded_offset (val), 0, - file, 0, val, &opts, current_language); + &format_stream, 0, val, &opts, current_language); /* If not a vector register, print it also according to its natural format. */ if (print_raw_format && TYPE_VECTOR (regtype) == 0) { + pad_to_column (format_stream, value_column_2); get_user_print_options (&opts); opts.deref_ref = 1; - fprintf_filtered (file, "\t"); val_print (regtype, - value_contents_for_printing (val), value_embedded_offset (val), 0, - file, 0, val, &opts, current_language); + &format_stream, 0, val, &opts, current_language); } } + fputs_filtered (format_stream.c_str (), file); fprintf_filtered (file, "\n"); } @@ -2341,8 +2287,7 @@ default_print_registers_info (struct gdbarch *gdbarch, int regnum, int print_all) { int i; - const int numregs = gdbarch_num_regs (gdbarch) - + gdbarch_num_pseudo_regs (gdbarch); + const int numregs = gdbarch_num_cooked_regs (gdbarch); for (i = 0; i < numregs; i++) { @@ -2380,7 +2325,7 @@ default_print_registers_info (struct gdbarch *gdbarch, } void -registers_info (char *addr_exp, int fpregs) +registers_info (const char *addr_exp, int fpregs) { struct frame_info *frame; struct gdbarch *gdbarch; @@ -2399,7 +2344,7 @@ registers_info (char *addr_exp, int fpregs) while (*addr_exp != '\0') { - char *start; + const char *start; const char *end; /* Skip leading white space. */ @@ -2429,8 +2374,7 @@ registers_info (char *addr_exp, int fpregs) /* User registers lie completely outside of the range of normal registers. Catch them early so that the target never sees them. */ - if (regnum >= gdbarch_num_regs (gdbarch) - + gdbarch_num_pseudo_regs (gdbarch)) + if (regnum >= gdbarch_num_cooked_regs (gdbarch)) { struct value *regval = value_of_user_reg (regnum, frame); const char *regname = user_reg_map_regnum_to_name (gdbarch, @@ -2469,8 +2413,7 @@ registers_info (char *addr_exp, int fpregs) int regnum; for (regnum = 0; - regnum < gdbarch_num_regs (gdbarch) - + gdbarch_num_pseudo_regs (gdbarch); + regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) { if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) @@ -2488,13 +2431,13 @@ registers_info (char *addr_exp, int fpregs) } static void -all_registers_info (char *addr_exp, int from_tty) +info_all_registers_command (const char *addr_exp, int from_tty) { registers_info (addr_exp, 1); } static void -nofp_registers_info (char *addr_exp, int from_tty) +info_registers_command (const char *addr_exp, int from_tty) { registers_info (addr_exp, 0); } @@ -2512,10 +2455,7 @@ print_vector_info (struct ui_file *file, int regnum; int printed_something = 0; - for (regnum = 0; - regnum < gdbarch_num_regs (gdbarch) - + gdbarch_num_pseudo_regs (gdbarch); - regnum++) + for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) { if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) { @@ -2529,7 +2469,7 @@ print_vector_info (struct ui_file *file, } static void -vector_info (char *args, int from_tty) +info_vector_command (const char *args, int from_tty) { if (!target_has_registers) error (_("The program has no registers now.")); @@ -2540,18 +2480,29 @@ vector_info (char *args, int from_tty) /* Kill the inferior process. Make us have no inferior. */ static void -kill_command (char *arg, int from_tty) +kill_command (const char *arg, int from_tty) { /* FIXME: This should not really be inferior_ptid (or target_has_execution). It should be a distinct flag that indicates that a target is active, cuz some targets don't have processes! */ - if (ptid_equal (inferior_ptid, null_ptid)) + if (inferior_ptid == null_ptid) error (_("The program is not being run.")); if (!query (_("Kill the program being debugged? "))) error (_("Not confirmed.")); + + int pid = current_inferior ()->pid; + /* Save the pid as a string before killing the inferior, since that + may unpush the current target, and we need the string after. */ + std::string pid_str = target_pid_to_str (ptid_t (pid)); + int infnum = current_inferior ()->num; + target_kill (); + if (print_inferior_events) + printf_unfiltered (_("[Inferior %d (%s) killed]\n"), + infnum, pid_str.c_str ()); + /* If we still have other inferiors to debug, then don't mess with with their threads. */ if (!have_inferiors ()) @@ -2569,46 +2520,29 @@ kill_command (char *arg, int from_tty) bfd_cache_close_all (); } -/* Used in `attach&' command. ARG is a point to an integer - representing a process id. Proceed threads of this process iff +/* Used in `attach&' command. Proceed threads of inferior INF iff they stopped due to debugger request, and when they did, they - reported a clean stop (GDB_SIGNAL_0). Do not proceed threads - that have been explicitly been told to stop. */ - -static int -proceed_after_attach_callback (struct thread_info *thread, - void *arg) -{ - int pid = * (int *) arg; - - if (ptid_get_pid (thread->ptid) == pid - && !is_exited (thread->ptid) - && !is_executing (thread->ptid) - && !thread->stop_requested - && thread->suspend.stop_signal == GDB_SIGNAL_0) - { - switch_to_thread (thread->ptid); - clear_proceed_status (0); - proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); - } - - return 0; -} + reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that + have been explicitly been told to stop. */ static void -proceed_after_attach (int pid) +proceed_after_attach (inferior *inf) { /* Don't error out if the current thread is running, because there may be other stopped threads. */ - struct cleanup *old_chain; /* Backup current thread and selected frame. */ - old_chain = make_cleanup_restore_current_thread (); - - iterate_over_threads (proceed_after_attach_callback, &pid); + scoped_restore_current_thread restore_thread; - /* Restore selected ptid. */ - do_cleanups (old_chain); + for (thread_info *thread : inf->non_exited_threads ()) + if (!thread->executing + && !thread->stop_requested + && thread->suspend.stop_signal == GDB_SIGNAL_0) + { + switch_to_thread (thread); + clear_proceed_status (0); + proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); + } } /* See inferior.h. */ @@ -2624,7 +2558,7 @@ setup_inferior (int from_tty) /* If no exec file is yet known, try to determine it from the process itself. */ if (get_exec_file (0) == NULL) - exec_file_locate_attach (ptid_get_pid (inferior_ptid), from_tty); + exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); else { reopen_exec_file (); @@ -2632,9 +2566,9 @@ setup_inferior (int from_tty) } /* Take any necessary post-attaching actions for this platform. */ - target_post_attach (ptid_get_pid (inferior_ptid)); + target_post_attach (inferior_ptid.pid ()); - post_create_inferior (¤t_target, from_tty); + post_create_inferior (current_top_target (), from_tty); } /* What to do after the first program stops after attaching. */ @@ -2655,7 +2589,7 @@ enum attach_post_wait_mode should be running. Else if ATTACH, */ static void -attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) +attach_post_wait (const char *args, int from_tty, enum attach_post_wait_mode mode) { struct inferior *inferior; @@ -2675,7 +2609,7 @@ attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) already running threads. If a thread has been stopped with a signal, leave it be. */ if (non_stop) - proceed_after_attach (inferior->pid); + proceed_after_attach (inferior); else { if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) @@ -2690,8 +2624,6 @@ attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) /* The user requested a plain `attach', so be sure to leave the inferior stopped. */ - async_enable_stdin (); - /* At least the current thread is already stopped. */ /* In all-stop, by definition, all threads have to be already @@ -2700,12 +2632,10 @@ attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) Be sure to explicitly stop all threads of the process. This should have no effect on already stopped threads. */ if (non_stop) - target_stop (pid_to_ptid (inferior->pid)); + target_stop (ptid_t (inferior->pid)); else if (target_is_non_stop_p ()) { - struct thread_info *thread; struct thread_info *lowest = inferior_thread (); - int pid = current_inferior ()->pid; stop_all_threads (); @@ -2713,17 +2643,12 @@ attach_post_wait (char *args, int from_tty, enum attach_post_wait_mode mode) stop. For consistency, always select the thread with lowest GDB number, which should be the main thread, if it still exists. */ - ALL_NON_EXITED_THREADS (thread) - { - if (ptid_get_pid (thread->ptid) == pid) - { - if (thread->inf->num < lowest->inf->num - || thread->per_inf_num < lowest->per_inf_num) - lowest = thread; - } - } + for (thread_info *thread : current_inferior ()->non_exited_threads ()) + if (thread->inf->num < lowest->inf->num + || thread->per_inf_num < lowest->per_inf_num) + lowest = thread; - switch_to_thread (lowest->ptid); + switch_to_thread (lowest); } /* Tell the user/frontend where we're stopped. */ @@ -2767,10 +2692,9 @@ attach_command_continuation_free_args (void *args) and allows us to start debugging it. */ void -attach_command (char *args, int from_tty) +attach_command (const char *args, int from_tty) { int async_exec; - struct cleanup *args_chain; struct target_ops *attach_target; struct inferior *inferior = current_inferior (); enum attach_post_wait_mode mode; @@ -2793,24 +2717,24 @@ attach_command (char *args, int from_tty) this function should probably be moved into target_pre_inferior. */ target_pre_inferior (from_tty); - args = strip_bg_char (args, &async_exec); - args_chain = make_cleanup (xfree, args); + gdb::unique_xmalloc_ptr stripped = strip_bg_char (args, &async_exec); + args = stripped.get (); attach_target = find_attach_target (); prepare_execution_command (attach_target, async_exec); - if (non_stop && !attach_target->to_supports_non_stop (attach_target)) + if (non_stop && !attach_target->supports_non_stop ()) error (_("Cannot attach to this target in non-stop mode")); - attach_target->to_attach (attach_target, args, from_tty); + attach_target->attach (args, from_tty); /* to_attach should push the target, so after this point we shouldn't refer to attach_target again. */ attach_target = NULL; /* Set up the "saved terminal modes" of the inferior based on what modes we are starting it with. */ - target_terminal_init (); + target_terminal::init (); /* Install inferior's terminal modes. This may look like a no-op, as we've just saved them above, however, this does more than @@ -2826,7 +2750,7 @@ attach_command (char *args, int from_tty) while we're in the event loop waiting for that stop. That is, before the attach continuation runs and the command is really finished. */ - target_terminal_inferior (); + target_terminal::inferior (); /* Set up execution context to know that we should return from wait_for_inferior as soon as the target reports a stop. */ @@ -2847,14 +2771,14 @@ attach_command (char *args, int from_tty) else /* The user requested an `attach', so stop all threads of this inferior. */ - target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid))); + target_stop (ptid_t (inferior_ptid.pid ())); } mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; /* Some system don't generate traps when attaching to inferior. E.g. Mach 3 or GNU hurd. */ - if (!target_attach_no_wait) + if (!target_attach_no_wait ()) { struct attach_command_continuation_args *a; @@ -2865,24 +2789,19 @@ attach_command (char *args, int from_tty) STOP_QUIETLY_NO_SIGSTOP is for. */ inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; - /* sync_execution mode. Wait for stop. */ + /* Wait for stop. */ a = XNEW (struct attach_command_continuation_args); a->args = xstrdup (args); a->from_tty = from_tty; a->mode = mode; add_inferior_continuation (attach_command_continuation, a, attach_command_continuation_free_args); - /* Done with ARGS. */ - do_cleanups (args_chain); if (!target_is_async_p ()) mark_infrun_async_event_handler (); return; } - /* Done with ARGS. */ - do_cleanups (args_chain); - attach_post_wait (args, from_tty, mode); } @@ -2895,26 +2814,24 @@ attach_command (char *args, int from_tty) as stopped. */ void -notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) +notice_new_inferior (thread_info *thr, int leave_running, int from_tty) { - struct cleanup* old_chain; - enum attach_post_wait_mode mode; - - old_chain = make_cleanup (null_cleanup, NULL); + enum attach_post_wait_mode mode + = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; - mode = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; + gdb::optional restore_thread; - if (!ptid_equal (inferior_ptid, null_ptid)) - make_cleanup_restore_current_thread (); + if (inferior_ptid != null_ptid) + restore_thread.emplace (); /* Avoid reading registers -- we haven't fetched the target description yet. */ - switch_to_thread_no_regs (find_thread_ptid (ptid)); + switch_to_thread_no_regs (thr); /* When we "notice" a new inferior we need to do all the things we would normally do if we had just attached to it. */ - if (is_executing (inferior_ptid)) + if (thr->executing) { struct attach_command_continuation_args *a; struct inferior *inferior = current_inferior (); @@ -2934,13 +2851,10 @@ notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) add_inferior_continuation (attach_command_continuation, a, attach_command_continuation_free_args); - do_cleanups (old_chain); return; } attach_post_wait ("" /* args */, from_tty, mode); - - do_cleanups (old_chain); } /* @@ -2955,29 +2869,31 @@ notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) */ void -detach_command (char *args, int from_tty) +detach_command (const char *args, int from_tty) { dont_repeat (); /* Not for the faint of heart. */ - if (ptid_equal (inferior_ptid, null_ptid)) + if (inferior_ptid == null_ptid) error (_("The program is not being run.")); query_if_trace_running (from_tty); disconnect_tracing (); - target_detach (args, from_tty); + target_detach (current_inferior (), from_tty); + + /* The current inferior process was just detached successfully. Get + rid of breakpoints that no longer make sense. Note we don't do + this within target_detach because that is also used when + following child forks, and in that case we will want to transfer + breakpoints to the child, not delete them. */ + breakpoint_init_inferior (inf_exited); /* If the solist is global across inferiors, don't clear it when we detach from a single inferior. */ if (!gdbarch_has_global_solist (target_gdbarch ())) no_shared_libraries (NULL, from_tty); - /* If we still have inferiors to debug, then don't mess with their - threads. */ - if (!have_inferiors ()) - init_thread_list (); - if (deprecated_detach_hook) deprecated_detach_hook (); } @@ -2991,7 +2907,7 @@ detach_command (char *args, int from_tty) stopped processes on some native platforms (e.g. GNU/Linux). */ static void -disconnect_command (char *args, int from_tty) +disconnect_command (const char *args, int from_tty) { dont_repeat (); /* Not for the faint of heart. */ query_if_trace_running (from_tty); @@ -3016,7 +2932,7 @@ interrupt_target_1 (int all_threads) if (non_stop) target_stop (ptid); else - target_interrupt (ptid); + target_interrupt (); /* Tag the thread as having been explicitly requested to stop, so other parts of gdb know not to resume this thread automatically, @@ -3030,12 +2946,12 @@ interrupt_target_1 (int all_threads) /* interrupt [-a] Stop the execution of the target while running in async mode, in - the backgound. In all-stop, stop the whole process. In non-stop + the background. In all-stop, stop the whole process. In non-stop mode, stop the current thread only by default, or stop all threads if the `-a' switch is used. */ static void -interrupt_command (char *args, int from_tty) +interrupt_command (const char *args, int from_tty) { if (target_can_async_p ()) { @@ -3063,10 +2979,7 @@ default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, int regnum; int printed_something = 0; - for (regnum = 0; - regnum < gdbarch_num_regs (gdbarch) - + gdbarch_num_pseudo_regs (gdbarch); - regnum++) + for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) { if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) { @@ -3080,7 +2993,7 @@ default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, } static void -float_info (char *args, int from_tty) +info_float_command (const char *args, int from_tty) { struct frame_info *frame; @@ -3092,7 +3005,7 @@ float_info (char *args, int from_tty) } static void -unset_command (char *args, int from_tty) +unset_command (const char *args, int from_tty) { printf_filtered (_("\"unset\" must be followed by the " "name of an unset subcommand.\n")); @@ -3102,7 +3015,7 @@ unset_command (char *args, int from_tty) /* Implement `info proc' family of commands. */ static void -info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty) +info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) { struct gdbarch *gdbarch = get_current_arch (); @@ -3118,7 +3031,7 @@ info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty) /* Implement `info proc' when given without any futher parameters. */ static void -info_proc_cmd (char *args, int from_tty) +info_proc_cmd (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_MINIMAL, from_tty); } @@ -3126,7 +3039,7 @@ info_proc_cmd (char *args, int from_tty) /* Implement `info proc mappings'. */ static void -info_proc_cmd_mappings (char *args, int from_tty) +info_proc_cmd_mappings (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); } @@ -3134,7 +3047,7 @@ info_proc_cmd_mappings (char *args, int from_tty) /* Implement `info proc stat'. */ static void -info_proc_cmd_stat (char *args, int from_tty) +info_proc_cmd_stat (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_STAT, from_tty); } @@ -3142,7 +3055,7 @@ info_proc_cmd_stat (char *args, int from_tty) /* Implement `info proc status'. */ static void -info_proc_cmd_status (char *args, int from_tty) +info_proc_cmd_status (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_STATUS, from_tty); } @@ -3150,7 +3063,7 @@ info_proc_cmd_status (char *args, int from_tty) /* Implement `info proc cwd'. */ static void -info_proc_cmd_cwd (char *args, int from_tty) +info_proc_cmd_cwd (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_CWD, from_tty); } @@ -3158,7 +3071,7 @@ info_proc_cmd_cwd (char *args, int from_tty) /* Implement `info proc cmdline'. */ static void -info_proc_cmd_cmdline (char *args, int from_tty) +info_proc_cmd_cmdline (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_CMDLINE, from_tty); } @@ -3166,19 +3079,56 @@ info_proc_cmd_cmdline (char *args, int from_tty) /* Implement `info proc exe'. */ static void -info_proc_cmd_exe (char *args, int from_tty) +info_proc_cmd_exe (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_EXE, from_tty); } +/* Implement `info proc files'. */ + +static void +info_proc_cmd_files (const char *args, int from_tty) +{ + info_proc_cmd_1 (args, IP_FILES, from_tty); +} + /* Implement `info proc all'. */ static void -info_proc_cmd_all (char *args, int from_tty) +info_proc_cmd_all (const char *args, int from_tty) { info_proc_cmd_1 (args, IP_ALL, from_tty); } +/* Implement `show print finish'. */ + +static void +show_print_finish (struct ui_file *file, int from_tty, + struct cmd_list_element *c, + const char *value) +{ + fprintf_filtered (file, _("\ +Printing of return value after `finish' is %s.\n"), + value); +} + + +/* This help string is used for the run, start, and starti commands. + It is defined as a macro to prevent duplication. */ + +#define RUN_ARGS_HELP \ +"You may specify arguments to give it.\n\ +Args may include \"*\", or \"[...]\"; they are expanded using the\n\ +shell that will start the program (specified by the \"$SHELL\" environment\n\ +variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ +are also allowed.\n\ +\n\ +With no arguments, uses arguments last specified (with \"run\" or \n\ +\"set args\"). To cancel previous arguments and run with no arguments,\n\ +use \"set args\" without arguments.\n\ +\n\ +To start the inferior without using a shell, use \"set startup-with-shell off\"." + void _initialize_infcmd (void) { @@ -3187,15 +3137,20 @@ _initialize_infcmd (void) const char *cmd_name; /* Add the filename of the terminal connected to inferior I/O. */ - add_setshow_filename_cmd ("inferior-tty", class_run, - &inferior_io_terminal_scratch, _("\ + add_setshow_optional_filename_cmd ("inferior-tty", class_run, + &inferior_io_terminal_scratch, _("\ Set terminal for future runs of program being debugged."), _("\ Show terminal for future runs of program being debugged."), _("\ -Usage: set inferior-tty /dev/pts/1"), - set_inferior_tty_command, - show_inferior_tty_command, - &setlist, &showlist); - add_com_alias ("tty", "set inferior-tty", class_alias, 0); +Usage: set inferior-tty [TTY]\n\n\ +If TTY is omitted, the default behavior of using the same terminal as GDB\n\ +is restored."), + set_inferior_tty_command, + show_inferior_tty_command, + &setlist, &showlist); + cmd_name = "inferior-tty"; + c = lookup_cmd (&cmd_name, setlist, "", -1, 1); + gdb_assert (c != NULL); + add_alias_cmd ("tty", c, class_alias, 0, &cmdlist); cmd_name = "args"; add_setshow_string_noescape_cmd (cmd_name, class_run, @@ -3210,6 +3165,25 @@ Follow this command with any number of args, to be passed to the program."), gdb_assert (c != NULL); set_cmd_completer (c, filename_completer); + cmd_name = "cwd"; + add_setshow_string_noescape_cmd (cmd_name, class_run, + &inferior_cwd_scratch, _("\ +Set the current working directory to be used when the inferior is started.\n\ +Changing this setting does not have any effect on inferiors that are\n\ +already running."), + _("\ +Show the current working directory that is used when the inferior is started."), + _("\ +Use this command to change the current working directory that will be used\n\ +when the inferior is started. This setting does not affect GDB's current\n\ +working directory."), + set_cwd_command, + show_cwd_command, + &setlist, &showlist); + c = lookup_cmd (&cmd_name, setlist, "", -1, 1); + gdb_assert (c != NULL); + set_cmd_completer (c, filename_completer); + c = add_cmd ("environment", no_class, environment_info, _("\ The environment to give the program, or one variable's value.\n\ With an argument VAR, prints the value of environment variable VAR to\n\ @@ -3359,7 +3333,7 @@ Execution will also stop upon exit from the current stack frame.")); c = add_com ("jump", class_run, jump_command, _("\ Continue program being debugged at specified line or address.\n\ -Usage: jump \n\ +Usage: jump LOCATION\n\ Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ for an address to start at.")); set_cmd_completer (c, location_completer); @@ -3380,21 +3354,19 @@ Specifying -a and an ignore count simultaneously is an error.")); add_com_alias ("fg", "cont", class_run, 1); c = add_com ("run", class_run, run_command, _("\ -Start debugged program. You may specify arguments to give it.\n\ -Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ -Input and output redirection with \">\", \"<\", or \">>\" are also \ -allowed.\n\n\ -With no arguments, uses arguments last specified (with \"run\" \ -or \"set args\").\n\ -To cancel previous arguments and run with no arguments,\n\ -use \"set args\" without arguments.")); +Start debugged program.\n" +RUN_ARGS_HELP)); set_cmd_completer (c, filename_completer); add_com_alias ("r", "run", class_run, 1); c = add_com ("start", class_run, start_command, _("\ -Run the debugged program until the beginning of the main procedure.\n\ -You may specify arguments to give to your program, just as with the\n\ -\"run\" command.")); +Start the debugged program stopping at the beginning of the main procedure.\n" +RUN_ARGS_HELP)); + set_cmd_completer (c, filename_completer); + + c = add_com ("starti", class_run, starti_command, _("\ +Start the debugged program stopping at the first instruction.\n" +RUN_ARGS_HELP)); set_cmd_completer (c, filename_completer); add_com ("interrupt", class_run, interrupt_command, @@ -3403,35 +3375,39 @@ If non-stop mode is enabled, interrupt only the current thread,\n\ otherwise all the threads in the program are stopped. To \n\ interrupt all running threads in non-stop mode, use the -a option.")); - c = add_info ("registers", nofp_registers_info, _("\ + c = add_info ("registers", info_registers_command, _("\ List of integer registers and their contents, for selected stack frame.\n\ -Register name as argument means describe only that register.")); +One or more register names as argument means describe the given registers.\n\ +One or more register group names as argument means describe the registers\n\ +in the named register groups.")); add_info_alias ("r", "registers", 1); set_cmd_completer (c, reg_or_group_completer); - c = add_info ("all-registers", all_registers_info, _("\ + c = add_info ("all-registers", info_all_registers_command, _("\ List of all registers and their contents, for selected stack frame.\n\ -Register name as argument means describe only that register.")); +One or more register names as argument means describe the given registers.\n\ +One or more register group names as argument means describe the registers\n\ +in the named register groups.")); set_cmd_completer (c, reg_or_group_completer); - add_info ("program", program_info, + add_info ("program", info_program_command, _("Execution status of the program.")); - add_info ("float", float_info, - _("Print the status of the floating point unit\n")); + add_info ("float", info_float_command, + _("Print the status of the floating point unit")); - add_info ("vector", vector_info, - _("Print the status of the vector unit\n")); + add_info ("vector", info_vector_command, + _("Print the status of the vector unit")); add_prefix_cmd ("proc", class_info, info_proc_cmd, _("\ -Show /proc process information about any running process.\n\ +Show additional information about a process.\n\ Specify any process id, or use the program being debugged by default."), &info_proc_cmdlist, "info proc ", 1/*allow-unknown*/, &infolist); add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ -List of mapped memory regions."), +List memory regions mapped by the specified process."), &info_proc_cmdlist); add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ @@ -3443,18 +3419,30 @@ List process info from /proc/PID/status."), &info_proc_cmdlist); add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ -List current working directory of the process."), +List current working directory of the specified process."), &info_proc_cmdlist); add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ -List command line arguments of the process."), +List command line arguments of the specified process."), &info_proc_cmdlist); add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ -List absolute filename for executable of the process."), +List absolute filename for executable of the specified process."), + &info_proc_cmdlist); + + add_cmd ("files", class_info, info_proc_cmd_files, _("\ +List files opened by the specified process."), &info_proc_cmdlist); add_cmd ("all", class_info, info_proc_cmd_all, _("\ -List all available /proc info."), +List all available info about the specified process."), &info_proc_cmdlist); + + add_setshow_boolean_cmd ("finish", class_support, + &user_print_options.finish_print, _("\ +Set whether `finish' prints the return value."), _("\ +Show whether `finish' prints the return value."), NULL, + NULL, + show_print_finish, + &setprintlist, &showprintlist); }