/* Process record and replay target for GDB, the GNU debugger.
- Copyright (C) 2008-2013 Free Software Foundation, Inc.
+ Copyright (C) 2008-2023 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcmd.h"
#include "completer.h"
#include "record.h"
-#include "observer.h"
+#include "observable.h"
#include "inferior.h"
-#include "common/common-utils.h"
+#include "gdbsupport/common-utils.h"
#include "cli/cli-utils.h"
#include "disasm.h"
static unsigned int record_call_history_size_setshow_var;
struct cmd_list_element *record_cmdlist = NULL;
+static struct cmd_list_element *record_goto_cmdlist = NULL;
struct cmd_list_element *set_record_cmdlist = NULL;
struct cmd_list_element *show_record_cmdlist = NULL;
struct cmd_list_element *info_record_cmdlist = NULL;
#define DEBUG(msg, args...) \
if (record_debug) \
- fprintf_unfiltered (gdb_stdlog, "record: " msg "\n", ##args)
+ gdb_printf (gdb_stdlog, "record: " msg "\n", ##args)
-/* Find the record target in the target stack. */
+/* See record.h. */
-static struct target_ops *
+struct target_ops *
find_record_target (void)
{
- struct target_ops *t;
-
- for (t = current_target.beneath; t != NULL; t = t->beneath)
- if (t->to_stratum == record_stratum)
- return t;
-
- return NULL;
+ return find_target_at (record_stratum);
}
/* Check that recording is active. Throw an error, if it isn't. */
t = find_record_target ();
if (t == NULL)
- error (_("No record target is currently active.\n"
- "Use one of the \"target record-<tab><tab>\" commands first."));
+ error (_("No recording is currently active.\n"
+ "Use the \"record full\" or \"record btrace\" command first."));
return t;
}
/* See record.h. */
+void
+record_preopen (void)
+{
+ /* Check if a record target is already running. */
+ if (find_record_target () != NULL)
+ error (_("The process is already being recorded. Use \"record stop\" to "
+ "stop recording first."));
+}
+
+/* See record.h. */
+
+void
+record_start (const char *method, const char *format, int from_tty)
+{
+ if (method == NULL)
+ {
+ if (format == NULL)
+ execute_command_to_string ("record", from_tty, false);
+ else
+ error (_("Invalid format."));
+ }
+ else if (strcmp (method, "full") == 0)
+ {
+ if (format == NULL)
+ execute_command_to_string ("record full", from_tty, false);
+ else
+ error (_("Invalid format."));
+ }
+ else if (strcmp (method, "btrace") == 0)
+ {
+ if (format == NULL)
+ execute_command_to_string ("record btrace", from_tty, false);
+ else if (strcmp (format, "bts") == 0)
+ execute_command_to_string ("record btrace bts", from_tty, false);
+ else if (strcmp (format, "pt") == 0)
+ execute_command_to_string ("record btrace pt", from_tty, false);
+ else
+ error (_("Invalid format."));
+ }
+ else
+ error (_("Invalid method."));
+}
+
+/* See record.h. */
+
+void
+record_stop (int from_tty)
+{
+ execute_command_to_string ("record stop", from_tty, false);
+}
+
+/* See record.h. */
+
int
record_read_memory (struct gdbarch *gdbarch,
CORE_ADDR memaddr, gdb_byte *myaddr,
static void
record_stop (struct target_ops *t)
{
- DEBUG ("stop %s", t->to_shortname);
+ DEBUG ("stop %s", t->shortname ());
- if (t->to_stop_recording != NULL)
- t->to_stop_recording ();
+ t->stop_recording ();
}
/* Unpush the record target. */
static void
record_unpush (struct target_ops *t)
{
- DEBUG ("unpush %s", t->to_shortname);
+ DEBUG ("unpush %s", t->shortname ());
- unpush_target (t);
+ current_inferior ()->unpush_target (t);
}
/* See record.h. */
void
-record_disconnect (struct target_ops *t, char *args, int from_tty)
+record_disconnect (struct target_ops *t, const char *args, int from_tty)
{
- gdb_assert (t->to_stratum == record_stratum);
+ gdb_assert (t->stratum () == record_stratum);
- DEBUG ("disconnect %s", t->to_shortname);
+ DEBUG ("disconnect %s", t->shortname ());
record_stop (t);
record_unpush (t);
/* See record.h. */
void
-record_detach (struct target_ops *t, char *args, int from_tty)
+record_detach (struct target_ops *t, inferior *inf, int from_tty)
{
- gdb_assert (t->to_stratum == record_stratum);
+ gdb_assert (t->stratum () == record_stratum);
- DEBUG ("detach %s", t->to_shortname);
+ DEBUG ("detach %s", t->shortname ());
record_stop (t);
record_unpush (t);
- target_detach (args, from_tty);
+ target_detach (inf, from_tty);
}
/* See record.h. */
void
record_mourn_inferior (struct target_ops *t)
{
- gdb_assert (t->to_stratum == record_stratum);
+ gdb_assert (t->stratum () == record_stratum);
- DEBUG ("mourn inferior %s", t->to_shortname);
+ DEBUG ("mourn inferior %s", t->shortname ());
/* It is safer to not stop recording. Resources will be freed when
threads are discarded. */
record_unpush (t);
- target_mourn_inferior ();
+ target_mourn_inferior (inferior_ptid);
}
/* See record.h. */
void
record_kill (struct target_ops *t)
{
- gdb_assert (t->to_stratum == record_stratum);
+ gdb_assert (t->stratum () == record_stratum);
- DEBUG ("kill %s", t->to_shortname);
+ DEBUG ("kill %s", t->shortname ());
/* It is safer to not stop recording. Resources will be freed when
threads are discarded. */
target_kill ();
}
+/* See record.h. */
+
+int
+record_check_stopped_by_breakpoint (const address_space *aspace,
+ CORE_ADDR pc,
+ enum target_stop_reason *reason)
+{
+ if (breakpoint_inserted_here_p (aspace, pc))
+ {
+ if (hardware_breakpoint_inserted_here_p (aspace, pc))
+ *reason = TARGET_STOPPED_BY_HW_BREAKPOINT;
+ else
+ *reason = TARGET_STOPPED_BY_SW_BREAKPOINT;
+ return 1;
+ }
+
+ *reason = TARGET_STOPPED_BY_NO_REASON;
+ return 0;
+}
+
/* Implement "show record debug" command. */
static void
show_record_debug (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
- fprintf_filtered (file, _("Debugging of process record target is %s.\n"),
- value);
+ gdb_printf (file, _("Debugging of process record target is %s.\n"),
+ value);
}
/* Alias for "target record". */
static void
-cmd_record_start (char *args, int from_tty)
+cmd_record_start (const char *args, int from_tty)
{
execute_command ("target record-full", from_tty);
}
of replay until the end. */
static void
-cmd_record_delete (char *args, int from_tty)
+cmd_record_delete (const char *args, int from_tty)
{
require_record_target ();
- if (!target_record_is_replaying ())
+ if (!target_record_is_replaying (inferior_ptid))
{
- printf_unfiltered (_("Already at end of record list.\n"));
+ gdb_printf (_("Already at end of record list.\n"));
return;
}
if (!target_supports_delete_record ())
{
- printf_unfiltered (_("The current record target does not support "
- "this operation.\n"));
+ gdb_printf (_("The current record target does not support "
+ "this operation.\n"));
return;
}
/* Implement the "stoprecord" or "record stop" command. */
static void
-cmd_record_stop (char *args, int from_tty)
+cmd_record_stop (const char *args, int from_tty)
{
struct target_ops *t;
record_stop (t);
record_unpush (t);
- printf_unfiltered (_("Process record is stopped and all execution "
- "logs are deleted.\n"));
+ gdb_printf (_("Process record is stopped and all execution "
+ "logs are deleted.\n"));
- observer_notify_record_changed (current_inferior (), 0);
+ gdb::observers::record_changed.notify (current_inferior (), 0, NULL, NULL);
}
-/* The "set record" command. */
-
-static void
-set_record_command (char *args, int from_tty)
-{
- printf_unfiltered (_("\"set record\" must be followed "
- "by an apporpriate subcommand.\n"));
- help_list (set_record_cmdlist, "set record ", all_commands, gdb_stdout);
-}
-
-/* The "show record" command. */
-
-static void
-show_record_command (char *args, int from_tty)
-{
- cmd_show_list (show_record_cmdlist, from_tty, "");
-}
/* The "info record" command. */
static void
-info_record_command (char *args, int from_tty)
+info_record_command (const char *args, int from_tty)
{
struct target_ops *t;
t = find_record_target ();
if (t == NULL)
{
- printf_filtered (_("No record target is currently active.\n"));
+ gdb_printf (_("No recording is currently active.\n"));
return;
}
- printf_filtered (_("Active record target: %s\n"), t->to_shortname);
- if (t->to_info_record != NULL)
- t->to_info_record ();
+ gdb_printf (_("Active record target: %s\n"), t->shortname ());
+ t->info_record ();
}
/* The "record save" command. */
static void
-cmd_record_save (char *args, int from_tty)
+cmd_record_save (const char *args, int from_tty)
{
- char *recfilename, recfilename_buffer[40];
+ const char *recfilename;
+ char recfilename_buffer[40];
require_record_target ();
{
/* Default recfile name is "gdb_record.PID". */
xsnprintf (recfilename_buffer, sizeof (recfilename_buffer),
- "gdb_record.%d", PIDGET (inferior_ptid));
+ "gdb_record.%d", inferior_ptid.pid ());
recfilename = recfilename_buffer;
}
target_save_record (recfilename);
}
+/* See record.h. */
+
+void
+record_goto (const char *arg)
+{
+ ULONGEST insn;
+
+ if (arg == NULL || *arg == '\0')
+ error (_("Command requires an argument (insn number to go to)."));
+
+ insn = parse_and_eval_long (arg);
+
+ require_record_target ();
+ target_goto_record (insn);
+}
+
/* "record goto" command. Argument is an instruction number,
as given by "info record".
Rewinds the recording (forward or backward) to the given instruction. */
-void
-cmd_record_goto (char *arg, int from_tty)
+static void
+cmd_record_goto (const char *arg, int from_tty)
{
+ record_goto (arg);
+}
+
+/* The "record goto begin" command. */
+
+static void
+cmd_record_goto_begin (const char *arg, int from_tty)
+{
+ if (arg != NULL && *arg != '\0')
+ error (_("Junk after argument: %s."), arg);
+
require_record_target ();
+ target_goto_record_begin ();
+}
- if (arg == NULL || *arg == '\0')
- error (_("Command requires an argument (insn number to go to)."));
+/* The "record goto end" command. */
- if (strncmp (arg, "start", strlen ("start")) == 0
- || strncmp (arg, "begin", strlen ("begin")) == 0)
- target_goto_record_begin ();
- else if (strncmp (arg, "end", strlen ("end")) == 0)
- target_goto_record_end ();
- else
- {
- ULONGEST insn;
+static void
+cmd_record_goto_end (const char *arg, int from_tty)
+{
+ if (arg != NULL && *arg != '\0')
+ error (_("Junk after argument: %s."), arg);
- insn = parse_and_eval_long (arg);
- target_goto_record (insn);
- }
+ require_record_target ();
+ target_goto_record_end ();
}
/* Read an instruction number from an argument string. */
static ULONGEST
-get_insn_number (char **arg)
+get_insn_number (const char **arg)
{
ULONGEST number;
const char *begin, *end, *pos;
begin = *arg;
- pos = skip_spaces_const (begin);
+ pos = skip_spaces (begin);
if (!isdigit (*pos))
error (_("Expected positive number, got: %s."), pos);
/* Read a context size from an argument string. */
static int
-get_context_size (char **arg)
+get_context_size (const char **arg)
{
- char *pos;
- int number;
+ const char *pos;
+ char *end;
pos = skip_spaces (*arg);
if (!isdigit (*pos))
error (_("Expected positive number, got: %s."), pos);
- return strtol (pos, arg, 10);
+ long result = strtol (pos, &end, 10);
+ *arg = end;
+ return result;
}
/* Complain about junk at the end of an argument string. */
static void
-no_chunk (char *arg)
+no_chunk (const char *arg)
{
if (*arg != 0)
error (_("Junk after argument: %s."), arg);
/* Read instruction-history modifiers from an argument string. */
-static int
-get_insn_history_modifiers (char **arg)
+static gdb_disassembly_flags
+get_insn_history_modifiers (const char **arg)
{
- int modifiers;
- char *args;
+ gdb_disassembly_flags modifiers;
+ const char *args;
modifiers = 0;
args = *arg;
switch (*args)
{
case 'm':
+ case 's':
modifiers |= DISASSEMBLY_SOURCE;
modifiers |= DISASSEMBLY_FILENAME;
break;
case 'r':
modifiers |= DISASSEMBLY_RAW_INSN;
break;
+ case 'b':
+ modifiers |= DISASSEMBLY_RAW_BYTES;
+ break;
case 'f':
modifiers |= DISASSEMBLY_OMIT_FNAME;
break;
/* The "record instruction-history" command. */
static void
-cmd_record_insn_history (char *arg, int from_tty)
+cmd_record_insn_history (const char *arg, int from_tty)
{
- int flags, size;
-
require_record_target ();
- flags = get_insn_history_modifiers (&arg);
+ gdb_disassembly_flags flags = get_insn_history_modifiers (&arg);
- size = command_size_to_target_size (record_insn_history_size);
+ int size = command_size_to_target_size (record_insn_history_size);
if (arg == NULL || *arg == 0 || strcmp (arg, "+") == 0)
target_insn_history (size, flags);
/* Read function-call-history modifiers from an argument string. */
-static int
-get_call_history_modifiers (char **arg)
+static record_print_flags
+get_call_history_modifiers (const char **arg)
{
- int modifiers;
- char *args;
-
- modifiers = 0;
- args = *arg;
+ record_print_flags modifiers = 0;
+ const char *args = *arg;
if (args == NULL)
return modifiers;
switch (*args)
{
case 'l':
- modifiers |= record_print_src_line;
+ modifiers |= RECORD_PRINT_SRC_LINE;
break;
case 'i':
- modifiers |= record_print_insn_range;
+ modifiers |= RECORD_PRINT_INSN_RANGE;
+ break;
+ case 'c':
+ modifiers |= RECORD_PRINT_INDENT_CALLS;
break;
default:
error (_("Invalid modifier: %c."), *args);
/* The "record function-call-history" command. */
static void
-cmd_record_call_history (char *arg, int from_tty)
+cmd_record_call_history (const char *arg, int from_tty)
{
- int flags, size;
-
require_record_target ();
- flags = get_call_history_modifiers (&arg);
+ record_print_flags flags = get_call_history_modifiers (&arg);
- size = command_size_to_target_size (record_call_history_size);
+ int size = command_size_to_target_size (record_call_history_size);
if (arg == NULL || *arg == 0 || strcmp (arg, "+") == 0)
target_call_history (size, flags);
is the real setting the command allows changing. */
static void
-validate_history_size (unsigned int *command_var, int *setting)
+validate_history_size (unsigned int *command_var, unsigned int *setting)
{
if (*command_var != UINT_MAX && *command_var > INT_MAX)
{
[0..UINT_MAX]. See command_size_to_target_size. */
static void
-set_record_insn_history_size (char *args, int from_tty,
+set_record_insn_history_size (const char *args, int from_tty,
struct cmd_list_element *c)
{
validate_history_size (&record_insn_history_size_setshow_var,
[0..UINT_MAX]. See command_size_to_target_size. */
static void
-set_record_call_history_size (char *args, int from_tty,
+set_record_call_history_size (const char *args, int from_tty,
struct cmd_list_element *c)
{
validate_history_size (&record_call_history_size_setshow_var,
&record_call_history_size);
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_record;
-
+void _initialize_record ();
void
-_initialize_record (void)
+_initialize_record ()
{
struct cmd_list_element *c;
add_setshow_uinteger_cmd ("instruction-history-size", no_class,
&record_insn_history_size_setshow_var, _("\
Set number of instructions to print in \"record instruction-history\"."), _("\
-Show number of instructions to print in \"record instruction-history\"."),
- NULL,
+Show number of instructions to print in \"record instruction-history\"."), _("\
+A size of \"unlimited\" means unlimited instructions. The default is 10."),
set_record_insn_history_size, NULL,
&set_record_cmdlist, &show_record_cmdlist);
add_setshow_uinteger_cmd ("function-call-history-size", no_class,
&record_call_history_size_setshow_var, _("\
Set number of function to print in \"record function-call-history\"."), _("\
-Show number of functions to print in \"record function-call-history\"."),
- NULL,
+Show number of functions to print in \"record function-call-history\"."), _("\
+A size of \"unlimited\" means unlimited lines. The default is 10."),
set_record_call_history_size, NULL,
&set_record_cmdlist, &show_record_cmdlist);
- c = add_prefix_cmd ("record", class_obscure, cmd_record_start,
+ cmd_list_element *record_cmd
+ = add_prefix_cmd ("record", class_obscure, cmd_record_start,
_("Start recording."),
- &record_cmdlist, "record ", 0, &cmdlist);
- set_cmd_completer (c, filename_completer);
+ &record_cmdlist, 0, &cmdlist);
+ set_cmd_completer (record_cmd, filename_completer);
+
+ add_com_alias ("rec", record_cmd, class_obscure, 1);
+
+ set_show_commands setshow_record_cmds
+ = add_setshow_prefix_cmd ("record", class_support,
+ _("Set record options."),
+ _("Show record options."),
+ &set_record_cmdlist, &show_record_cmdlist,
+ &setlist, &showlist);
- add_com_alias ("rec", "record", class_obscure, 1);
- add_prefix_cmd ("record", class_support, set_record_command,
- _("Set record options"), &set_record_cmdlist,
- "set record ", 0, &setlist);
- add_alias_cmd ("rec", "record", class_obscure, 1, &setlist);
- add_prefix_cmd ("record", class_support, show_record_command,
- _("Show record options"), &show_record_cmdlist,
- "show record ", 0, &showlist);
- add_alias_cmd ("rec", "record", class_obscure, 1, &showlist);
- add_prefix_cmd ("record", class_support, info_record_command,
- _("Info record options"), &info_record_cmdlist,
- "info record ", 0, &infolist);
- add_alias_cmd ("rec", "record", class_obscure, 1, &infolist);
+
+ add_alias_cmd ("rec", setshow_record_cmds.set, class_obscure, 1, &setlist);
+ add_alias_cmd ("rec", setshow_record_cmds.show, class_obscure, 1, &showlist);
+
+ cmd_list_element *info_record_cmd
+ = add_prefix_cmd ("record", class_support, info_record_command,
+ _("Info record options."), &info_record_cmdlist,
+ 0, &infolist);
+ add_alias_cmd ("rec", info_record_cmd, class_obscure, 1, &infolist);
c = add_cmd ("save", class_obscure, cmd_record_save,
_("Save the execution log to a file.\n\
-Argument is optional filename.\n\
-Default filename is 'gdb_record.<process_id>'."),
+Usage: record save [FILENAME]\n\
+Default filename is 'gdb_record.PROCESS_ID'."),
&record_cmdlist);
set_cmd_completer (c, filename_completer);
- add_cmd ("delete", class_obscure, cmd_record_delete,
- _("Delete the rest of execution log and start recording it anew."),
- &record_cmdlist);
- add_alias_cmd ("d", "delete", class_obscure, 1, &record_cmdlist);
- add_alias_cmd ("del", "delete", class_obscure, 1, &record_cmdlist);
-
- add_cmd ("stop", class_obscure, cmd_record_stop,
- _("Stop the record/replay target."),
- &record_cmdlist);
- add_alias_cmd ("s", "stop", class_obscure, 1, &record_cmdlist);
+ cmd_list_element *record_delete_cmd
+ = add_cmd ("delete", class_obscure, cmd_record_delete,
+ _("Delete the rest of execution log and start recording it \
+anew."),
+ &record_cmdlist);
+ add_alias_cmd ("d", record_delete_cmd, class_obscure, 1, &record_cmdlist);
+ add_alias_cmd ("del", record_delete_cmd, class_obscure, 1, &record_cmdlist);
+
+ cmd_list_element *record_stop_cmd
+ = add_cmd ("stop", class_obscure, cmd_record_stop,
+ _("Stop the record/replay target."),
+ &record_cmdlist);
+ add_alias_cmd ("s", record_stop_cmd, class_obscure, 1, &record_cmdlist);
- add_cmd ("goto", class_obscure, cmd_record_goto, _("\
+ add_prefix_cmd ("goto", class_obscure, cmd_record_goto, _("\
Restore the program to its state at instruction number N.\n\
Argument is instruction number, as shown by 'info record'."),
- &record_cmdlist);
+ &record_goto_cmdlist, 1, &record_cmdlist);
+
+ cmd_list_element *record_goto_begin_cmd
+ = add_cmd ("begin", class_obscure, cmd_record_goto_begin,
+ _("Go to the beginning of the execution log."),
+ &record_goto_cmdlist);
+ add_alias_cmd ("start", record_goto_begin_cmd, class_obscure, 1,
+ &record_goto_cmdlist);
+
+ add_cmd ("end", class_obscure, cmd_record_goto_end,
+ _("Go to the end of the execution log."),
+ &record_goto_cmdlist);
add_cmd ("instruction-history", class_obscure, cmd_record_insn_history, _("\
Print disassembled instructions stored in the execution log.\n\
-With a /m modifier, source lines are included (if available).\n\
+With a /m or /s modifier, source lines are included (if available).\n\
With a /r modifier, raw instructions in hex are included.\n\
With a /f modifier, function names are omitted.\n\
With a /p modifier, current position markers are omitted.\n\
from the first argument.\n\
The number of instructions to disassemble can be defined with \"set record \
instruction-history-size\"."),
- &record_cmdlist);
+ &record_cmdlist);
add_cmd ("function-call-history", class_obscure, cmd_record_call_history, _("\
Prints the execution history at function granularity.\n\
Without modifiers, it prints the function name.\n\
With a /l modifier, the source file and line number range is included.\n\
With a /i modifier, the instruction number range is included.\n\
+With a /c modifier, the output is indented based on the call stack depth.\n\
With no argument, prints ten more lines after the previous ten-line print.\n\
\"record function-call-history -\" prints ten lines before a previous ten-line \
print.\n\
from the first argument.\n\
The number of functions to print can be defined with \"set record \
function-call-history-size\"."),
- &record_cmdlist);
+ &record_cmdlist);
/* Sync command control variables. */
record_insn_history_size_setshow_var = record_insn_history_size;
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