1 /* Tracing functionality for remote targets in custom GDB protocol
3 Copyright (C) 1997-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
25 #include "expression.h"
30 #include "gdb_string.h"
32 #include "breakpoint.h"
33 #include "tracepoint.h"
36 #include "completer.h"
38 #include "dictionary.h"
40 #include "user-regs.h"
44 #include "filenames.h"
45 #include "gdbthread.h"
53 #include "exceptions.h"
54 #include "cli/cli-utils.h"
57 #include "completer.h"
59 /* readline include files */
60 #include "readline/readline.h"
61 #include "readline/history.h"
63 /* readline defines this. */
74 /* Maximum length of an agent aexpression.
75 This accounts for the fact that packets are limited to 400 bytes
76 (which includes everything -- including the checksum), and assumes
77 the worst case of maximum length for each of the pieces of a
80 NOTE: expressions get mem2hex'ed otherwise this would be twice as
81 large. (400 - 31)/2 == 184 */
82 #define MAX_AGENT_EXPR_LEN 184
86 /* A hook used to notify the UI of tracepoint operations. */
88 void (*deprecated_trace_find_hook
) (char *arg
, int from_tty
);
89 void (*deprecated_trace_start_stop_hook
) (int start
, int from_tty
);
91 extern void (*deprecated_readline_begin_hook
) (char *, ...);
92 extern char *(*deprecated_readline_hook
) (char *);
93 extern void (*deprecated_readline_end_hook
) (void);
98 This module defines the following debugger commands:
99 trace : set a tracepoint on a function, line, or address.
100 info trace : list all debugger-defined tracepoints.
101 delete trace : delete one or more tracepoints.
102 enable trace : enable one or more tracepoints.
103 disable trace : disable one or more tracepoints.
104 actions : specify actions to be taken at a tracepoint.
105 passcount : specify a pass count for a tracepoint.
106 tstart : start a trace experiment.
107 tstop : stop a trace experiment.
108 tstatus : query the status of a trace experiment.
109 tfind : find a trace frame in the trace buffer.
110 tdump : print everything collected at the current tracepoint.
111 save-tracepoints : write tracepoint setup into a file.
113 This module defines the following user-visible debugger variables:
114 $trace_frame : sequence number of trace frame currently being debugged.
115 $trace_line : source line of trace frame currently being debugged.
116 $trace_file : source file of trace frame currently being debugged.
117 $tracepoint : tracepoint number of trace frame currently being debugged.
121 /* ======= Important global variables: ======= */
123 /* The list of all trace state variables. We don't retain pointers to
124 any of these for any reason - API is by name or number only - so it
125 works to have a vector of objects. */
127 typedef struct trace_state_variable tsv_s
;
130 static VEC(tsv_s
) *tvariables
;
132 /* The next integer to assign to a variable. */
134 static int next_tsv_number
= 1;
136 /* Number of last traceframe collected. */
137 static int traceframe_number
;
139 /* Tracepoint for last traceframe collected. */
140 static int tracepoint_number
;
142 /* Symbol for function for last traceframe collected. */
143 static struct symbol
*traceframe_fun
;
145 /* Symtab and line for last traceframe collected. */
146 static struct symtab_and_line traceframe_sal
;
148 /* The traceframe info of the current traceframe. NULL if we haven't
149 yet attempted to fetch it, or if the target does not support
150 fetching this object, or if we're not inspecting a traceframe
152 static struct traceframe_info
*traceframe_info
;
154 /* Tracing command lists. */
155 static struct cmd_list_element
*tfindlist
;
157 /* List of expressions to collect by default at each tracepoint hit. */
158 char *default_collect
= "";
160 static int disconnected_tracing
;
162 /* This variable controls whether we ask the target for a linear or
163 circular trace buffer. */
165 static int circular_trace_buffer
;
167 /* This variable is the requested trace buffer size, or -1 to indicate
168 that we don't care and leave it up to the target to set a size. */
170 static int trace_buffer_size
= -1;
172 /* Textual notes applying to the current and/or future trace runs. */
174 char *trace_user
= NULL
;
176 /* Textual notes applying to the current and/or future trace runs. */
178 char *trace_notes
= NULL
;
180 /* Textual notes applying to the stopping of a trace. */
182 char *trace_stop_notes
= NULL
;
184 /* ======= Important command functions: ======= */
185 static void trace_actions_command (char *, int);
186 static void trace_start_command (char *, int);
187 static void trace_stop_command (char *, int);
188 static void trace_status_command (char *, int);
189 static void trace_find_command (char *, int);
190 static void trace_find_pc_command (char *, int);
191 static void trace_find_tracepoint_command (char *, int);
192 static void trace_find_line_command (char *, int);
193 static void trace_find_range_command (char *, int);
194 static void trace_find_outside_command (char *, int);
195 static void trace_dump_command (char *, int);
197 /* support routines */
199 struct collection_list
;
200 static void add_aexpr (struct collection_list
*, struct agent_expr
*);
201 static char *mem2hex (gdb_byte
*, char *, int);
202 static void add_register (struct collection_list
*collection
,
205 static void free_uploaded_tps (struct uploaded_tp
**utpp
);
206 static void free_uploaded_tsvs (struct uploaded_tsv
**utsvp
);
209 extern void _initialize_tracepoint (void);
211 static struct trace_status trace_status
;
213 char *stop_reason_names
[] = {
223 struct trace_status
*
224 current_trace_status (void)
226 return &trace_status
;
232 free_traceframe_info (struct traceframe_info
*info
)
236 VEC_free (mem_range_s
, info
->memory
);
242 /* Free and clear the traceframe info cache of the current
246 clear_traceframe_info (void)
248 free_traceframe_info (traceframe_info
);
249 traceframe_info
= NULL
;
252 /* Set traceframe number to NUM. */
254 set_traceframe_num (int num
)
256 traceframe_number
= num
;
257 set_internalvar_integer (lookup_internalvar ("trace_frame"), num
);
260 /* Set tracepoint number to NUM. */
262 set_tracepoint_num (int num
)
264 tracepoint_number
= num
;
265 set_internalvar_integer (lookup_internalvar ("tracepoint"), num
);
268 /* Set externally visible debug variables for querying/printing
269 the traceframe context (line, function, file). */
272 set_traceframe_context (struct frame_info
*trace_frame
)
276 /* Save as globals for internal use. */
277 if (trace_frame
!= NULL
278 && get_frame_pc_if_available (trace_frame
, &trace_pc
))
280 traceframe_sal
= find_pc_line (trace_pc
, 0);
281 traceframe_fun
= find_pc_function (trace_pc
);
283 /* Save linenumber as "$trace_line", a debugger variable visible to
285 set_internalvar_integer (lookup_internalvar ("trace_line"),
286 traceframe_sal
.line
);
290 init_sal (&traceframe_sal
);
291 traceframe_fun
= NULL
;
292 set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
295 /* Save func name as "$trace_func", a debugger variable visible to
297 if (traceframe_fun
== NULL
298 || SYMBOL_LINKAGE_NAME (traceframe_fun
) == NULL
)
299 clear_internalvar (lookup_internalvar ("trace_func"));
301 set_internalvar_string (lookup_internalvar ("trace_func"),
302 SYMBOL_LINKAGE_NAME (traceframe_fun
));
304 /* Save file name as "$trace_file", a debugger variable visible to
306 if (traceframe_sal
.symtab
== NULL
)
307 clear_internalvar (lookup_internalvar ("trace_file"));
309 set_internalvar_string (lookup_internalvar ("trace_file"),
310 symtab_to_filename_for_display (traceframe_sal
.symtab
));
313 /* Create a new trace state variable with the given name. */
315 struct trace_state_variable
*
316 create_trace_state_variable (const char *name
)
318 struct trace_state_variable tsv
;
320 memset (&tsv
, 0, sizeof (tsv
));
321 tsv
.name
= xstrdup (name
);
322 tsv
.number
= next_tsv_number
++;
323 return VEC_safe_push (tsv_s
, tvariables
, &tsv
);
326 /* Look for a trace state variable of the given name. */
328 struct trace_state_variable
*
329 find_trace_state_variable (const char *name
)
331 struct trace_state_variable
*tsv
;
334 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
335 if (strcmp (name
, tsv
->name
) == 0)
342 delete_trace_state_variable (const char *name
)
344 struct trace_state_variable
*tsv
;
347 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
348 if (strcmp (name
, tsv
->name
) == 0)
350 observer_notify_tsv_deleted (tsv
);
352 xfree ((void *)tsv
->name
);
353 VEC_unordered_remove (tsv_s
, tvariables
, ix
);
358 warning (_("No trace variable named \"$%s\", not deleting"), name
);
361 /* Throws an error if NAME is not valid syntax for a trace state
365 validate_trace_state_variable_name (const char *name
)
370 error (_("Must supply a non-empty variable name"));
372 /* All digits in the name is reserved for value history
374 for (p
= name
; isdigit (*p
); p
++)
377 error (_("$%s is not a valid trace state variable name"), name
);
379 for (p
= name
; isalnum (*p
) || *p
== '_'; p
++)
382 error (_("$%s is not a valid trace state variable name"), name
);
385 /* The 'tvariable' command collects a name and optional expression to
386 evaluate into an initial value. */
389 trace_variable_command (char *args
, int from_tty
)
391 struct cleanup
*old_chain
;
393 struct trace_state_variable
*tsv
;
397 error_no_arg (_("Syntax is $NAME [ = EXPR ]"));
399 /* Only allow two syntaxes; "$name" and "$name=value". */
400 p
= skip_spaces (args
);
403 error (_("Name of trace variable should start with '$'"));
406 while (isalnum (*p
) || *p
== '_')
408 name
= savestring (name
, p
- name
);
409 old_chain
= make_cleanup (xfree
, name
);
412 if (*p
!= '=' && *p
!= '\0')
413 error (_("Syntax must be $NAME [ = EXPR ]"));
415 validate_trace_state_variable_name (name
);
418 initval
= value_as_long (parse_and_eval (++p
));
420 /* If the variable already exists, just change its initial value. */
421 tsv
= find_trace_state_variable (name
);
424 if (tsv
->initial_value
!= initval
)
426 tsv
->initial_value
= initval
;
427 observer_notify_tsv_modified (tsv
);
429 printf_filtered (_("Trace state variable $%s "
430 "now has initial value %s.\n"),
431 tsv
->name
, plongest (tsv
->initial_value
));
432 do_cleanups (old_chain
);
436 /* Create a new variable. */
437 tsv
= create_trace_state_variable (name
);
438 tsv
->initial_value
= initval
;
440 observer_notify_tsv_created (tsv
);
442 printf_filtered (_("Trace state variable $%s "
443 "created, with initial value %s.\n"),
444 tsv
->name
, plongest (tsv
->initial_value
));
446 do_cleanups (old_chain
);
450 delete_trace_variable_command (char *args
, int from_tty
)
454 struct cleanup
*back_to
;
458 if (query (_("Delete all trace state variables? ")))
459 VEC_free (tsv_s
, tvariables
);
461 observer_notify_tsv_deleted (NULL
);
465 argv
= gdb_buildargv (args
);
466 back_to
= make_cleanup_freeargv (argv
);
468 for (ix
= 0; argv
[ix
] != NULL
; ix
++)
470 if (*argv
[ix
] == '$')
471 delete_trace_state_variable (argv
[ix
] + 1);
473 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv
[ix
]);
476 do_cleanups (back_to
);
482 tvariables_info_1 (void)
484 struct trace_state_variable
*tsv
;
487 struct cleanup
*back_to
;
488 struct ui_out
*uiout
= current_uiout
;
490 if (VEC_length (tsv_s
, tvariables
) == 0 && !ui_out_is_mi_like_p (uiout
))
492 printf_filtered (_("No trace state variables.\n"));
496 /* Try to acquire values from the target. */
497 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
, ++count
)
498 tsv
->value_known
= target_get_trace_state_variable_value (tsv
->number
,
501 back_to
= make_cleanup_ui_out_table_begin_end (uiout
, 3,
502 count
, "trace-variables");
503 ui_out_table_header (uiout
, 15, ui_left
, "name", "Name");
504 ui_out_table_header (uiout
, 11, ui_left
, "initial", "Initial");
505 ui_out_table_header (uiout
, 11, ui_left
, "current", "Current");
507 ui_out_table_body (uiout
);
509 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
511 struct cleanup
*back_to2
;
515 back_to2
= make_cleanup_ui_out_tuple_begin_end (uiout
, "variable");
517 name
= concat ("$", tsv
->name
, (char *) NULL
);
518 make_cleanup (xfree
, name
);
519 ui_out_field_string (uiout
, "name", name
);
520 ui_out_field_string (uiout
, "initial", plongest (tsv
->initial_value
));
522 if (tsv
->value_known
)
523 c
= plongest (tsv
->value
);
524 else if (ui_out_is_mi_like_p (uiout
))
525 /* For MI, we prefer not to use magic string constants, but rather
526 omit the field completely. The difference between unknown and
527 undefined does not seem important enough to represent. */
529 else if (current_trace_status ()->running
|| traceframe_number
>= 0)
530 /* The value is/was defined, but we don't have it. */
533 /* It is not meaningful to ask about the value. */
536 ui_out_field_string (uiout
, "current", c
);
537 ui_out_text (uiout
, "\n");
539 do_cleanups (back_to2
);
542 do_cleanups (back_to
);
545 /* List all the trace state variables. */
548 tvariables_info (char *args
, int from_tty
)
550 tvariables_info_1 ();
553 /* Stash definitions of tsvs into the given file. */
556 save_trace_state_variables (struct ui_file
*fp
)
558 struct trace_state_variable
*tsv
;
561 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
563 fprintf_unfiltered (fp
, "tvariable $%s", tsv
->name
);
564 if (tsv
->initial_value
)
565 fprintf_unfiltered (fp
, " = %s", plongest (tsv
->initial_value
));
566 fprintf_unfiltered (fp
, "\n");
570 /* ACTIONS functions: */
572 /* The three functions:
573 collect_pseudocommand,
574 while_stepping_pseudocommand, and
575 end_actions_pseudocommand
576 are placeholders for "commands" that are actually ONLY to be used
577 within a tracepoint action list. If the actual function is ever called,
578 it means that somebody issued the "command" at the top level,
579 which is always an error. */
582 end_actions_pseudocommand (char *args
, int from_tty
)
584 error (_("This command cannot be used at the top level."));
588 while_stepping_pseudocommand (char *args
, int from_tty
)
590 error (_("This command can only be used in a tracepoint actions list."));
594 collect_pseudocommand (char *args
, int from_tty
)
596 error (_("This command can only be used in a tracepoint actions list."));
600 teval_pseudocommand (char *args
, int from_tty
)
602 error (_("This command can only be used in a tracepoint actions list."));
605 /* Parse any collection options, such as /s for strings. */
608 decode_agent_options (const char *exp
, int *trace_string
)
610 struct value_print_options opts
;
617 /* Call this to borrow the print elements default for collection
619 get_user_print_options (&opts
);
624 if (target_supports_string_tracing ())
626 /* Allow an optional decimal number giving an explicit maximum
627 string length, defaulting it to the "print elements" value;
628 so "collect/s80 mystr" gets at most 80 bytes of string. */
629 *trace_string
= opts
.print_max
;
631 if (*exp
>= '0' && *exp
<= '9')
632 *trace_string
= atoi (exp
);
633 while (*exp
>= '0' && *exp
<= '9')
637 error (_("Target does not support \"/s\" option for string tracing."));
640 error (_("Undefined collection format \"%c\"."), *exp
);
642 exp
= skip_spaces_const (exp
);
647 /* Enter a list of actions for a tracepoint. */
649 trace_actions_command (char *args
, int from_tty
)
651 struct tracepoint
*t
;
652 struct command_line
*l
;
654 t
= get_tracepoint_by_number (&args
, NULL
, 1);
658 xstrprintf ("Enter actions for tracepoint %d, one per line.",
660 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
662 l
= read_command_lines (tmpbuf
, from_tty
, 1,
663 check_tracepoint_command
, t
);
664 do_cleanups (cleanups
);
665 breakpoint_set_commands (&t
->base
, l
);
667 /* else just return */
670 /* Report the results of checking the agent expression, as errors or
674 report_agent_reqs_errors (struct agent_expr
*aexpr
)
676 /* All of the "flaws" are serious bytecode generation issues that
677 should never occur. */
678 if (aexpr
->flaw
!= agent_flaw_none
)
679 internal_error (__FILE__
, __LINE__
, _("expression is malformed"));
681 /* If analysis shows a stack underflow, GDB must have done something
682 badly wrong in its bytecode generation. */
683 if (aexpr
->min_height
< 0)
684 internal_error (__FILE__
, __LINE__
,
685 _("expression has min height < 0"));
687 /* Issue this error if the stack is predicted to get too deep. The
688 limit is rather arbitrary; a better scheme might be for the
689 target to report how much stack it will have available. The
690 depth roughly corresponds to parenthesization, so a limit of 20
691 amounts to 20 levels of expression nesting, which is actually
692 a pretty big hairy expression. */
693 if (aexpr
->max_height
> 20)
694 error (_("Expression is too complicated."));
697 /* worker function */
699 validate_actionline (const char *line
, struct breakpoint
*b
)
701 struct cmd_list_element
*c
;
702 struct expression
*exp
= NULL
;
703 struct cleanup
*old_chain
= NULL
;
706 struct bp_location
*loc
;
707 struct agent_expr
*aexpr
;
708 struct tracepoint
*t
= (struct tracepoint
*) b
;
710 /* If EOF is typed, *line is NULL. */
714 p
= skip_spaces_const (line
);
716 /* Symbol lookup etc. */
717 if (*p
== '\0') /* empty line: just prompt for another line. */
720 if (*p
== '#') /* comment line */
723 c
= lookup_cmd (&p
, cmdlist
, "", -1, 1);
725 error (_("`%s' is not a tracepoint action, or is ambiguous."), p
);
727 if (cmd_cfunc_eq (c
, collect_pseudocommand
))
729 int trace_string
= 0;
732 p
= decode_agent_options (p
, &trace_string
);
735 { /* Repeat over a comma-separated list. */
736 QUIT
; /* Allow user to bail out with ^C. */
737 p
= skip_spaces_const (p
);
739 if (*p
== '$') /* Look for special pseudo-symbols. */
741 if (0 == strncasecmp ("reg", p
+ 1, 3)
742 || 0 == strncasecmp ("arg", p
+ 1, 3)
743 || 0 == strncasecmp ("loc", p
+ 1, 3)
744 || 0 == strncasecmp ("_ret", p
+ 1, 4)
745 || 0 == strncasecmp ("_sdata", p
+ 1, 6))
750 /* else fall thru, treat p as an expression and parse it! */
753 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
756 exp
= parse_exp_1 (&p
, loc
->address
,
757 block_for_pc (loc
->address
), 1);
758 old_chain
= make_cleanup (free_current_contents
, &exp
);
760 if (exp
->elts
[0].opcode
== OP_VAR_VALUE
)
762 if (SYMBOL_CLASS (exp
->elts
[2].symbol
) == LOC_CONST
)
764 error (_("constant `%s' (value %s) "
765 "will not be collected."),
766 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
),
767 plongest (SYMBOL_VALUE (exp
->elts
[2].symbol
)));
769 else if (SYMBOL_CLASS (exp
->elts
[2].symbol
)
770 == LOC_OPTIMIZED_OUT
)
772 error (_("`%s' is optimized away "
773 "and cannot be collected."),
774 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
));
778 /* We have something to collect, make sure that the expr to
779 bytecode translator can handle it and that it's not too
781 aexpr
= gen_trace_for_expr (loc
->address
, exp
, trace_string
);
782 make_cleanup_free_agent_expr (aexpr
);
784 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
785 error (_("Expression is too complicated."));
789 report_agent_reqs_errors (aexpr
);
791 do_cleanups (old_chain
);
794 while (p
&& *p
++ == ',');
797 else if (cmd_cfunc_eq (c
, teval_pseudocommand
))
800 { /* Repeat over a comma-separated list. */
801 QUIT
; /* Allow user to bail out with ^C. */
802 p
= skip_spaces_const (p
);
805 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
809 /* Only expressions are allowed for this action. */
810 exp
= parse_exp_1 (&p
, loc
->address
,
811 block_for_pc (loc
->address
), 1);
812 old_chain
= make_cleanup (free_current_contents
, &exp
);
814 /* We have something to evaluate, make sure that the expr to
815 bytecode translator can handle it and that it's not too
817 aexpr
= gen_eval_for_expr (loc
->address
, exp
);
818 make_cleanup_free_agent_expr (aexpr
);
820 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
821 error (_("Expression is too complicated."));
824 report_agent_reqs_errors (aexpr
);
826 do_cleanups (old_chain
);
829 while (p
&& *p
++ == ',');
832 else if (cmd_cfunc_eq (c
, while_stepping_pseudocommand
))
836 p
= skip_spaces_const (p
);
837 t
->step_count
= strtol (p
, &endp
, 0);
838 if (endp
== p
|| t
->step_count
== 0)
839 error (_("while-stepping step count `%s' is malformed."), line
);
843 else if (cmd_cfunc_eq (c
, end_actions_pseudocommand
))
847 error (_("`%s' is not a supported tracepoint action."), line
);
851 memrange_absolute
= -1
856 int type
; /* memrange_absolute for absolute memory range,
857 else basereg number. */
858 bfd_signed_vma start
;
862 struct collection_list
864 unsigned char regs_mask
[32]; /* room for up to 256 regs */
867 struct memrange
*list
;
868 long aexpr_listsize
; /* size of array pointed to by expr_list elt */
870 struct agent_expr
**aexpr_list
;
872 /* True is the user requested a collection of "$_sdata", "static
876 tracepoint_list
, stepping_list
;
878 /* MEMRANGE functions: */
880 static int memrange_cmp (const void *, const void *);
882 /* Compare memranges for qsort. */
884 memrange_cmp (const void *va
, const void *vb
)
886 const struct memrange
*a
= va
, *b
= vb
;
888 if (a
->type
< b
->type
)
890 if (a
->type
> b
->type
)
892 if (a
->type
== memrange_absolute
)
894 if ((bfd_vma
) a
->start
< (bfd_vma
) b
->start
)
896 if ((bfd_vma
) a
->start
> (bfd_vma
) b
->start
)
901 if (a
->start
< b
->start
)
903 if (a
->start
> b
->start
)
909 /* Sort the memrange list using qsort, and merge adjacent memranges. */
911 memrange_sortmerge (struct collection_list
*memranges
)
915 qsort (memranges
->list
, memranges
->next_memrange
,
916 sizeof (struct memrange
), memrange_cmp
);
917 if (memranges
->next_memrange
> 0)
919 for (a
= 0, b
= 1; b
< memranges
->next_memrange
; b
++)
921 /* If memrange b overlaps or is adjacent to memrange a,
923 if (memranges
->list
[a
].type
== memranges
->list
[b
].type
924 && memranges
->list
[b
].start
<= memranges
->list
[a
].end
)
926 if (memranges
->list
[b
].end
> memranges
->list
[a
].end
)
927 memranges
->list
[a
].end
= memranges
->list
[b
].end
;
928 continue; /* next b, same a */
932 memcpy (&memranges
->list
[a
], &memranges
->list
[b
],
933 sizeof (struct memrange
));
935 memranges
->next_memrange
= a
+ 1;
939 /* Add a register to a collection list. */
941 add_register (struct collection_list
*collection
, unsigned int regno
)
944 printf_filtered ("collect register %d\n", regno
);
945 if (regno
>= (8 * sizeof (collection
->regs_mask
)))
946 error (_("Internal: register number %d too large for tracepoint"),
948 collection
->regs_mask
[regno
/ 8] |= 1 << (regno
% 8);
951 /* Add a memrange to a collection list. */
953 add_memrange (struct collection_list
*memranges
,
954 int type
, bfd_signed_vma base
,
959 printf_filtered ("(%d,", type
);
961 printf_filtered (",%ld)\n", len
);
964 /* type: memrange_absolute == memory, other n == basereg */
965 memranges
->list
[memranges
->next_memrange
].type
= type
;
966 /* base: addr if memory, offset if reg relative. */
967 memranges
->list
[memranges
->next_memrange
].start
= base
;
968 /* len: we actually save end (base + len) for convenience */
969 memranges
->list
[memranges
->next_memrange
].end
= base
+ len
;
970 memranges
->next_memrange
++;
971 if (memranges
->next_memrange
>= memranges
->listsize
)
973 memranges
->listsize
*= 2;
974 memranges
->list
= xrealloc (memranges
->list
,
975 memranges
->listsize
);
978 if (type
!= memrange_absolute
) /* Better collect the base register! */
979 add_register (memranges
, type
);
982 /* Add a symbol to a collection list. */
984 collect_symbol (struct collection_list
*collect
,
986 struct gdbarch
*gdbarch
,
987 long frame_regno
, long frame_offset
,
993 bfd_signed_vma offset
;
994 int treat_as_expr
= 0;
996 len
= TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
)));
997 switch (SYMBOL_CLASS (sym
))
1000 printf_filtered ("%s: don't know symbol class %d\n",
1001 SYMBOL_PRINT_NAME (sym
),
1002 SYMBOL_CLASS (sym
));
1005 printf_filtered ("constant %s (value %s) will not be collected.\n",
1006 SYMBOL_PRINT_NAME (sym
), plongest (SYMBOL_VALUE (sym
)));
1009 offset
= SYMBOL_VALUE_ADDRESS (sym
);
1014 sprintf_vma (tmp
, offset
);
1015 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
1016 SYMBOL_PRINT_NAME (sym
), len
,
1019 /* A struct may be a C++ class with static fields, go to general
1020 expression handling. */
1021 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1024 add_memrange (collect
, memrange_absolute
, offset
, len
);
1027 reg
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
1029 printf_filtered ("LOC_REG[parm] %s: ",
1030 SYMBOL_PRINT_NAME (sym
));
1031 add_register (collect
, reg
);
1032 /* Check for doubles stored in two registers. */
1033 /* FIXME: how about larger types stored in 3 or more regs? */
1034 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FLT
&&
1035 len
> register_size (gdbarch
, reg
))
1036 add_register (collect
, reg
+ 1);
1039 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
1040 printf_filtered (" (will not collect %s)\n",
1041 SYMBOL_PRINT_NAME (sym
));
1045 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
1048 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1049 SYMBOL_PRINT_NAME (sym
), len
);
1050 printf_vma (offset
);
1051 printf_filtered (" from frame ptr reg %d\n", reg
);
1053 add_memrange (collect
, reg
, offset
, len
);
1055 case LOC_REGPARM_ADDR
:
1056 reg
= SYMBOL_VALUE (sym
);
1060 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
1061 SYMBOL_PRINT_NAME (sym
), len
);
1062 printf_vma (offset
);
1063 printf_filtered (" from reg %d\n", reg
);
1065 add_memrange (collect
, reg
, offset
, len
);
1069 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
1072 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1073 SYMBOL_PRINT_NAME (sym
), len
);
1074 printf_vma (offset
);
1075 printf_filtered (" from frame ptr reg %d\n", reg
);
1077 add_memrange (collect
, reg
, offset
, len
);
1080 case LOC_UNRESOLVED
:
1084 case LOC_OPTIMIZED_OUT
:
1085 printf_filtered ("%s has been optimized out of existence.\n",
1086 SYMBOL_PRINT_NAME (sym
));
1094 /* Expressions are the most general case. */
1097 struct agent_expr
*aexpr
;
1098 struct cleanup
*old_chain1
= NULL
;
1100 aexpr
= gen_trace_for_var (scope
, gdbarch
, sym
, trace_string
);
1102 /* It can happen that the symbol is recorded as a computed
1103 location, but it's been optimized away and doesn't actually
1104 have a location expression. */
1107 printf_filtered ("%s has been optimized out of existence.\n",
1108 SYMBOL_PRINT_NAME (sym
));
1112 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1116 report_agent_reqs_errors (aexpr
);
1118 discard_cleanups (old_chain1
);
1119 add_aexpr (collect
, aexpr
);
1121 /* Take care of the registers. */
1122 if (aexpr
->reg_mask_len
> 0)
1126 for (ndx1
= 0; ndx1
< aexpr
->reg_mask_len
; ndx1
++)
1128 QUIT
; /* Allow user to bail out with ^C. */
1129 if (aexpr
->reg_mask
[ndx1
] != 0)
1131 /* Assume chars have 8 bits. */
1132 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1133 if (aexpr
->reg_mask
[ndx1
] & (1 << ndx2
))
1134 /* It's used -- record it. */
1135 add_register (collect
, ndx1
* 8 + ndx2
);
1142 /* Data to be passed around in the calls to the locals and args
1145 struct add_local_symbols_data
1147 struct collection_list
*collect
;
1148 struct gdbarch
*gdbarch
;
1156 /* The callback for the locals and args iterators. */
1159 do_collect_symbol (const char *print_name
,
1163 struct add_local_symbols_data
*p
= cb_data
;
1165 collect_symbol (p
->collect
, sym
, p
->gdbarch
, p
->frame_regno
,
1166 p
->frame_offset
, p
->pc
, p
->trace_string
);
1170 /* Add all locals (or args) symbols to collection list. */
1172 add_local_symbols (struct collection_list
*collect
,
1173 struct gdbarch
*gdbarch
, CORE_ADDR pc
,
1174 long frame_regno
, long frame_offset
, int type
,
1177 struct block
*block
;
1178 struct add_local_symbols_data cb_data
;
1180 cb_data
.collect
= collect
;
1181 cb_data
.gdbarch
= gdbarch
;
1183 cb_data
.frame_regno
= frame_regno
;
1184 cb_data
.frame_offset
= frame_offset
;
1186 cb_data
.trace_string
= trace_string
;
1190 block
= block_for_pc (pc
);
1193 warning (_("Can't collect locals; "
1194 "no symbol table info available.\n"));
1198 iterate_over_block_local_vars (block
, do_collect_symbol
, &cb_data
);
1199 if (cb_data
.count
== 0)
1200 warning (_("No locals found in scope."));
1204 pc
= get_pc_function_start (pc
);
1205 block
= block_for_pc (pc
);
1208 warning (_("Can't collect args; no symbol table info available."));
1212 iterate_over_block_arg_vars (block
, do_collect_symbol
, &cb_data
);
1213 if (cb_data
.count
== 0)
1214 warning (_("No args found in scope."));
1219 add_static_trace_data (struct collection_list
*collection
)
1222 printf_filtered ("collect static trace data\n");
1223 collection
->strace_data
= 1;
1226 /* worker function */
1228 clear_collection_list (struct collection_list
*list
)
1232 list
->next_memrange
= 0;
1233 for (ndx
= 0; ndx
< list
->next_aexpr_elt
; ndx
++)
1235 free_agent_expr (list
->aexpr_list
[ndx
]);
1236 list
->aexpr_list
[ndx
] = NULL
;
1238 list
->next_aexpr_elt
= 0;
1239 memset (list
->regs_mask
, 0, sizeof (list
->regs_mask
));
1240 list
->strace_data
= 0;
1243 /* Reduce a collection list to string form (for gdb protocol). */
1245 stringify_collection_list (struct collection_list
*list
, char *string
)
1247 char temp_buf
[2048];
1251 char *(*str_list
)[];
1255 count
= 1 + 1 + list
->next_memrange
+ list
->next_aexpr_elt
+ 1;
1256 str_list
= (char *(*)[]) xmalloc (count
* sizeof (char *));
1258 if (list
->strace_data
)
1261 printf_filtered ("\nCollecting static trace data\n");
1264 (*str_list
)[ndx
] = savestring (temp_buf
, end
- temp_buf
);
1268 for (i
= sizeof (list
->regs_mask
) - 1; i
> 0; i
--)
1269 if (list
->regs_mask
[i
] != 0) /* Skip leading zeroes in regs_mask. */
1271 if (list
->regs_mask
[i
] != 0) /* Prepare to send regs_mask to the stub. */
1274 printf_filtered ("\nCollecting registers (mask): 0x");
1279 QUIT
; /* Allow user to bail out with ^C. */
1281 printf_filtered ("%02X", list
->regs_mask
[i
]);
1282 sprintf (end
, "%02X", list
->regs_mask
[i
]);
1285 (*str_list
)[ndx
] = xstrdup (temp_buf
);
1289 printf_filtered ("\n");
1290 if (list
->next_memrange
> 0 && info_verbose
)
1291 printf_filtered ("Collecting memranges: \n");
1292 for (i
= 0, count
= 0, end
= temp_buf
; i
< list
->next_memrange
; i
++)
1294 QUIT
; /* Allow user to bail out with ^C. */
1295 sprintf_vma (tmp2
, list
->list
[i
].start
);
1298 printf_filtered ("(%d, %s, %ld)\n",
1301 (long) (list
->list
[i
].end
- list
->list
[i
].start
));
1303 if (count
+ 27 > MAX_AGENT_EXPR_LEN
)
1305 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1312 bfd_signed_vma length
= list
->list
[i
].end
- list
->list
[i
].start
;
1314 /* The "%X" conversion specifier expects an unsigned argument,
1315 so passing -1 (memrange_absolute) to it directly gives you
1316 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1318 if (list
->list
[i
].type
== memrange_absolute
)
1319 sprintf (end
, "M-1,%s,%lX", tmp2
, (long) length
);
1321 sprintf (end
, "M%X,%s,%lX", list
->list
[i
].type
, tmp2
, (long) length
);
1324 count
+= strlen (end
);
1325 end
= temp_buf
+ count
;
1328 for (i
= 0; i
< list
->next_aexpr_elt
; i
++)
1330 QUIT
; /* Allow user to bail out with ^C. */
1331 if ((count
+ 10 + 2 * list
->aexpr_list
[i
]->len
) > MAX_AGENT_EXPR_LEN
)
1333 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1338 sprintf (end
, "X%08X,", list
->aexpr_list
[i
]->len
);
1339 end
+= 10; /* 'X' + 8 hex digits + ',' */
1342 end
= mem2hex (list
->aexpr_list
[i
]->buf
,
1343 end
, list
->aexpr_list
[i
]->len
);
1344 count
+= 2 * list
->aexpr_list
[i
]->len
;
1349 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1354 (*str_list
)[ndx
] = NULL
;
1367 encode_actions_1 (struct command_line
*action
,
1368 struct breakpoint
*t
,
1369 struct bp_location
*tloc
,
1371 LONGEST frame_offset
,
1372 struct collection_list
*collect
,
1373 struct collection_list
*stepping_list
)
1375 const char *action_exp
;
1376 struct expression
*exp
= NULL
;
1378 struct value
*tempval
;
1379 struct cmd_list_element
*cmd
;
1380 struct agent_expr
*aexpr
;
1382 for (; action
; action
= action
->next
)
1384 QUIT
; /* Allow user to bail out with ^C. */
1385 action_exp
= action
->line
;
1386 action_exp
= skip_spaces_const (action_exp
);
1388 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
1390 error (_("Bad action list item: %s"), action_exp
);
1392 if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
1394 int trace_string
= 0;
1396 if (*action_exp
== '/')
1397 action_exp
= decode_agent_options (action_exp
, &trace_string
);
1400 { /* Repeat over a comma-separated list. */
1401 QUIT
; /* Allow user to bail out with ^C. */
1402 action_exp
= skip_spaces_const (action_exp
);
1404 if (0 == strncasecmp ("$reg", action_exp
, 4))
1406 for (i
= 0; i
< gdbarch_num_regs (tloc
->gdbarch
); i
++)
1407 add_register (collect
, i
);
1408 action_exp
= strchr (action_exp
, ','); /* more? */
1410 else if (0 == strncasecmp ("$arg", action_exp
, 4))
1412 add_local_symbols (collect
,
1419 action_exp
= strchr (action_exp
, ','); /* more? */
1421 else if (0 == strncasecmp ("$loc", action_exp
, 4))
1423 add_local_symbols (collect
,
1430 action_exp
= strchr (action_exp
, ','); /* more? */
1432 else if (0 == strncasecmp ("$_ret", action_exp
, 5))
1434 struct cleanup
*old_chain1
= NULL
;
1436 aexpr
= gen_trace_for_return_address (tloc
->address
,
1440 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1443 report_agent_reqs_errors (aexpr
);
1445 discard_cleanups (old_chain1
);
1446 add_aexpr (collect
, aexpr
);
1448 /* take care of the registers */
1449 if (aexpr
->reg_mask_len
> 0)
1453 for (ndx1
= 0; ndx1
< aexpr
->reg_mask_len
; ndx1
++)
1455 QUIT
; /* allow user to bail out with ^C */
1456 if (aexpr
->reg_mask
[ndx1
] != 0)
1458 /* assume chars have 8 bits */
1459 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1460 if (aexpr
->reg_mask
[ndx1
] & (1 << ndx2
))
1461 /* it's used -- record it */
1462 add_register (collect
,
1468 action_exp
= strchr (action_exp
, ','); /* more? */
1470 else if (0 == strncasecmp ("$_sdata", action_exp
, 7))
1472 add_static_trace_data (collect
);
1473 action_exp
= strchr (action_exp
, ','); /* more? */
1478 struct cleanup
*old_chain
= NULL
;
1479 struct cleanup
*old_chain1
= NULL
;
1481 exp
= parse_exp_1 (&action_exp
, tloc
->address
,
1482 block_for_pc (tloc
->address
), 1);
1483 old_chain
= make_cleanup (free_current_contents
, &exp
);
1485 switch (exp
->elts
[0].opcode
)
1489 const char *name
= &exp
->elts
[2].string
;
1491 i
= user_reg_map_name_to_regnum (tloc
->gdbarch
,
1492 name
, strlen (name
));
1494 internal_error (__FILE__
, __LINE__
,
1495 _("Register $%s not available"),
1498 printf_filtered ("OP_REGISTER: ");
1499 add_register (collect
, i
);
1504 /* Safe because we know it's a simple expression. */
1505 tempval
= evaluate_expression (exp
);
1506 addr
= value_address (tempval
);
1507 /* Initialize the TYPE_LENGTH if it is a typedef. */
1508 check_typedef (exp
->elts
[1].type
);
1509 add_memrange (collect
, memrange_absolute
, addr
,
1510 TYPE_LENGTH (exp
->elts
[1].type
));
1514 collect_symbol (collect
,
1515 exp
->elts
[2].symbol
,
1523 default: /* Full-fledged expression. */
1524 aexpr
= gen_trace_for_expr (tloc
->address
, exp
,
1527 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1531 report_agent_reqs_errors (aexpr
);
1533 discard_cleanups (old_chain1
);
1534 add_aexpr (collect
, aexpr
);
1536 /* Take care of the registers. */
1537 if (aexpr
->reg_mask_len
> 0)
1542 for (ndx1
= 0; ndx1
< aexpr
->reg_mask_len
; ndx1
++)
1544 QUIT
; /* Allow user to bail out with ^C. */
1545 if (aexpr
->reg_mask
[ndx1
] != 0)
1547 /* Assume chars have 8 bits. */
1548 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1549 if (aexpr
->reg_mask
[ndx1
] & (1 << ndx2
))
1550 /* It's used -- record it. */
1551 add_register (collect
,
1558 do_cleanups (old_chain
);
1561 while (action_exp
&& *action_exp
++ == ',');
1563 else if (cmd_cfunc_eq (cmd
, teval_pseudocommand
))
1566 { /* Repeat over a comma-separated list. */
1567 QUIT
; /* Allow user to bail out with ^C. */
1568 action_exp
= skip_spaces_const (action_exp
);
1571 struct cleanup
*old_chain
= NULL
;
1572 struct cleanup
*old_chain1
= NULL
;
1574 exp
= parse_exp_1 (&action_exp
, tloc
->address
,
1575 block_for_pc (tloc
->address
), 1);
1576 old_chain
= make_cleanup (free_current_contents
, &exp
);
1578 aexpr
= gen_eval_for_expr (tloc
->address
, exp
);
1579 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1582 report_agent_reqs_errors (aexpr
);
1584 discard_cleanups (old_chain1
);
1585 /* Even though we're not officially collecting, add
1586 to the collect list anyway. */
1587 add_aexpr (collect
, aexpr
);
1589 do_cleanups (old_chain
);
1592 while (action_exp
&& *action_exp
++ == ',');
1594 else if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
1596 /* We check against nested while-stepping when setting
1597 breakpoint action, so no way to run into nested
1599 gdb_assert (stepping_list
);
1601 encode_actions_1 (action
->body_list
[0], t
, tloc
, frame_reg
,
1602 frame_offset
, stepping_list
, NULL
);
1605 error (_("Invalid tracepoint command '%s'"), action
->line
);
1609 /* Render all actions into gdb protocol. */
1612 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
1613 char ***tdp_actions
, char ***stepping_actions
)
1615 static char tdp_buff
[2048], step_buff
[2048];
1616 char *default_collect_line
= NULL
;
1617 struct command_line
*actions
;
1618 struct command_line
*default_collect_action
= NULL
;
1620 LONGEST frame_offset
;
1621 struct cleanup
*back_to
;
1623 back_to
= make_cleanup (null_cleanup
, NULL
);
1625 clear_collection_list (&tracepoint_list
);
1626 clear_collection_list (&stepping_list
);
1628 *tdp_actions
= NULL
;
1629 *stepping_actions
= NULL
;
1631 gdbarch_virtual_frame_pointer (tloc
->gdbarch
,
1632 tloc
->address
, &frame_reg
, &frame_offset
);
1634 actions
= breakpoint_commands (t
);
1636 /* If there are default expressions to collect, make up a collect
1637 action and prepend to the action list to encode. Note that since
1638 validation is per-tracepoint (local var "xyz" might be valid for
1639 one tracepoint and not another, etc), we make up the action on
1640 the fly, and don't cache it. */
1641 if (*default_collect
)
1643 default_collect_line
= xstrprintf ("collect %s", default_collect
);
1644 make_cleanup (xfree
, default_collect_line
);
1646 validate_actionline (default_collect_line
, t
);
1648 default_collect_action
= xmalloc (sizeof (struct command_line
));
1649 make_cleanup (xfree
, default_collect_action
);
1650 default_collect_action
->next
= actions
;
1651 default_collect_action
->line
= default_collect_line
;
1652 actions
= default_collect_action
;
1654 encode_actions_1 (actions
, t
, tloc
, frame_reg
, frame_offset
,
1655 &tracepoint_list
, &stepping_list
);
1657 memrange_sortmerge (&tracepoint_list
);
1658 memrange_sortmerge (&stepping_list
);
1660 *tdp_actions
= stringify_collection_list (&tracepoint_list
,
1662 *stepping_actions
= stringify_collection_list (&stepping_list
,
1665 do_cleanups (back_to
);
1669 add_aexpr (struct collection_list
*collect
, struct agent_expr
*aexpr
)
1671 if (collect
->next_aexpr_elt
>= collect
->aexpr_listsize
)
1673 collect
->aexpr_list
=
1674 xrealloc (collect
->aexpr_list
,
1675 2 * collect
->aexpr_listsize
* sizeof (struct agent_expr
*));
1676 collect
->aexpr_listsize
*= 2;
1678 collect
->aexpr_list
[collect
->next_aexpr_elt
] = aexpr
;
1679 collect
->next_aexpr_elt
++;
1683 process_tracepoint_on_disconnect (void)
1685 VEC(breakpoint_p
) *tp_vec
= NULL
;
1687 struct breakpoint
*b
;
1688 int has_pending_p
= 0;
1690 /* Check whether we still have pending tracepoint. If we have, warn the
1691 user that pending tracepoint will no longer work. */
1692 tp_vec
= all_tracepoints ();
1693 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
1702 struct bp_location
*loc1
;
1704 for (loc1
= b
->loc
; loc1
; loc1
= loc1
->next
)
1706 if (loc1
->shlib_disabled
)
1717 VEC_free (breakpoint_p
, tp_vec
);
1720 warning (_("Pending tracepoints will not be resolved while"
1721 " GDB is disconnected\n"));
1726 start_tracing (char *notes
)
1728 VEC(breakpoint_p
) *tp_vec
= NULL
;
1730 struct breakpoint
*b
;
1731 struct trace_state_variable
*tsv
;
1732 int any_enabled
= 0, num_to_download
= 0;
1735 tp_vec
= all_tracepoints ();
1737 /* No point in tracing without any tracepoints... */
1738 if (VEC_length (breakpoint_p
, tp_vec
) == 0)
1740 VEC_free (breakpoint_p
, tp_vec
);
1741 error (_("No tracepoints defined, not starting trace"));
1744 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
1746 struct tracepoint
*t
= (struct tracepoint
*) b
;
1747 struct bp_location
*loc
;
1749 if (b
->enable_state
== bp_enabled
)
1752 if ((b
->type
== bp_fast_tracepoint
1753 ? may_insert_fast_tracepoints
1754 : may_insert_tracepoints
))
1757 warning (_("May not insert %stracepoints, skipping tracepoint %d"),
1758 (b
->type
== bp_fast_tracepoint
? "fast " : ""), b
->number
);
1763 if (target_supports_enable_disable_tracepoint ())
1764 warning (_("No tracepoints enabled"));
1767 /* No point in tracing with only disabled tracepoints that
1768 cannot be re-enabled. */
1769 VEC_free (breakpoint_p
, tp_vec
);
1770 error (_("No tracepoints enabled, not starting trace"));
1774 if (num_to_download
<= 0)
1776 VEC_free (breakpoint_p
, tp_vec
);
1777 error (_("No tracepoints that may be downloaded, not starting trace"));
1780 target_trace_init ();
1782 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
1784 struct tracepoint
*t
= (struct tracepoint
*) b
;
1785 struct bp_location
*loc
;
1786 int bp_location_downloaded
= 0;
1788 /* Clear `inserted' flag. */
1789 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
1792 if ((b
->type
== bp_fast_tracepoint
1793 ? !may_insert_fast_tracepoints
1794 : !may_insert_tracepoints
))
1797 t
->number_on_target
= 0;
1799 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
1801 /* Since tracepoint locations are never duplicated, `inserted'
1802 flag should be zero. */
1803 gdb_assert (!loc
->inserted
);
1805 target_download_tracepoint (loc
);
1808 bp_location_downloaded
= 1;
1811 t
->number_on_target
= b
->number
;
1813 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
1814 if (loc
->probe
!= NULL
)
1815 loc
->probe
->pops
->set_semaphore (loc
->probe
, loc
->gdbarch
);
1817 if (bp_location_downloaded
)
1818 observer_notify_breakpoint_modified (b
);
1820 VEC_free (breakpoint_p
, tp_vec
);
1822 /* Send down all the trace state variables too. */
1823 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
1825 target_download_trace_state_variable (tsv
);
1828 /* Tell target to treat text-like sections as transparent. */
1829 target_trace_set_readonly_regions ();
1830 /* Set some mode flags. */
1831 target_set_disconnected_tracing (disconnected_tracing
);
1832 target_set_circular_trace_buffer (circular_trace_buffer
);
1833 target_set_trace_buffer_size (trace_buffer_size
);
1836 notes
= trace_notes
;
1837 ret
= target_set_trace_notes (trace_user
, notes
, NULL
);
1839 if (!ret
&& (trace_user
|| notes
))
1840 warning (_("Target does not support trace user/notes, info ignored"));
1842 /* Now insert traps and begin collecting data. */
1843 target_trace_start ();
1845 /* Reset our local state. */
1846 set_traceframe_num (-1);
1847 set_tracepoint_num (-1);
1848 set_traceframe_context (NULL
);
1849 current_trace_status()->running
= 1;
1850 clear_traceframe_info ();
1853 /* The tstart command requests the target to start a new trace run.
1854 The command passes any arguments it has to the target verbatim, as
1855 an optional "trace note". This is useful as for instance a warning
1856 to other users if the trace runs disconnected, and you don't want
1857 anybody else messing with the target. */
1860 trace_start_command (char *args
, int from_tty
)
1862 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1864 if (current_trace_status ()->running
)
1867 && !query (_("A trace is running already. Start a new run? ")))
1868 error (_("New trace run not started."));
1871 start_tracing (args
);
1874 /* The tstop command stops the tracing run. The command passes any
1875 supplied arguments to the target verbatim as a "stop note"; if the
1876 target supports trace notes, then it will be reported back as part
1877 of the trace run's status. */
1880 trace_stop_command (char *args
, int from_tty
)
1882 if (!current_trace_status ()->running
)
1883 error (_("Trace is not running."));
1885 stop_tracing (args
);
1889 stop_tracing (char *note
)
1892 VEC(breakpoint_p
) *tp_vec
= NULL
;
1894 struct breakpoint
*t
;
1896 target_trace_stop ();
1898 tp_vec
= all_tracepoints ();
1899 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
1901 struct bp_location
*loc
;
1903 if ((t
->type
== bp_fast_tracepoint
1904 ? !may_insert_fast_tracepoints
1905 : !may_insert_tracepoints
))
1908 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
1910 /* GDB can be totally absent in some disconnected trace scenarios,
1911 but we don't really care if this semaphore goes out of sync.
1912 That's why we are decrementing it here, but not taking care
1914 if (loc
->probe
!= NULL
)
1915 loc
->probe
->pops
->clear_semaphore (loc
->probe
, loc
->gdbarch
);
1919 VEC_free (breakpoint_p
, tp_vec
);
1922 note
= trace_stop_notes
;
1923 ret
= target_set_trace_notes (NULL
, NULL
, note
);
1926 warning (_("Target does not support trace notes, note ignored"));
1928 /* Should change in response to reply? */
1929 current_trace_status ()->running
= 0;
1932 /* tstatus command */
1934 trace_status_command (char *args
, int from_tty
)
1936 struct trace_status
*ts
= current_trace_status ();
1938 VEC(breakpoint_p
) *tp_vec
= NULL
;
1939 struct breakpoint
*t
;
1941 status
= target_get_trace_status (ts
);
1945 if (ts
->filename
!= NULL
)
1946 printf_filtered (_("Using a trace file.\n"));
1949 printf_filtered (_("Trace can not be run on this target.\n"));
1954 if (!ts
->running_known
)
1956 printf_filtered (_("Run/stop status is unknown.\n"));
1958 else if (ts
->running
)
1960 printf_filtered (_("Trace is running on the target.\n"));
1964 switch (ts
->stop_reason
)
1966 case trace_never_run
:
1967 printf_filtered (_("No trace has been run on the target.\n"));
1971 printf_filtered (_("Trace stopped by a tstop command (%s).\n"),
1974 printf_filtered (_("Trace stopped by a tstop command.\n"));
1976 case trace_buffer_full
:
1977 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1979 case trace_disconnected
:
1980 printf_filtered (_("Trace stopped because of disconnection.\n"));
1982 case tracepoint_passcount
:
1983 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1984 ts
->stopping_tracepoint
);
1986 case tracepoint_error
:
1987 if (ts
->stopping_tracepoint
)
1988 printf_filtered (_("Trace stopped by an "
1989 "error (%s, tracepoint %d).\n"),
1990 ts
->stop_desc
, ts
->stopping_tracepoint
);
1992 printf_filtered (_("Trace stopped by an error (%s).\n"),
1995 case trace_stop_reason_unknown
:
1996 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1999 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
2005 if (ts
->traceframes_created
>= 0
2006 && ts
->traceframe_count
!= ts
->traceframes_created
)
2008 printf_filtered (_("Buffer contains %d trace "
2009 "frames (of %d created total).\n"),
2010 ts
->traceframe_count
, ts
->traceframes_created
);
2012 else if (ts
->traceframe_count
>= 0)
2014 printf_filtered (_("Collected %d trace frames.\n"),
2015 ts
->traceframe_count
);
2018 if (ts
->buffer_free
>= 0)
2020 if (ts
->buffer_size
>= 0)
2022 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
2023 ts
->buffer_free
, ts
->buffer_size
);
2024 if (ts
->buffer_size
> 0)
2025 printf_filtered (_(" (%d%% full)"),
2026 ((int) ((((long long) (ts
->buffer_size
2027 - ts
->buffer_free
)) * 100)
2028 / ts
->buffer_size
)));
2029 printf_filtered (_(".\n"));
2032 printf_filtered (_("Trace buffer has %d bytes free.\n"),
2036 if (ts
->disconnected_tracing
)
2037 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
2039 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
2041 if (ts
->circular_buffer
)
2042 printf_filtered (_("Trace buffer is circular.\n"));
2044 if (ts
->user_name
&& strlen (ts
->user_name
) > 0)
2045 printf_filtered (_("Trace user is %s.\n"), ts
->user_name
);
2047 if (ts
->notes
&& strlen (ts
->notes
) > 0)
2048 printf_filtered (_("Trace notes: %s.\n"), ts
->notes
);
2050 /* Now report on what we're doing with tfind. */
2051 if (traceframe_number
>= 0)
2052 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
2053 traceframe_number
, tracepoint_number
);
2055 printf_filtered (_("Not looking at any trace frame.\n"));
2057 /* Report start/stop times if supplied. */
2062 LONGEST run_time
= ts
->stop_time
- ts
->start_time
;
2064 /* Reporting a run time is more readable than two long numbers. */
2065 printf_filtered (_("Trace started at %ld.%06ld secs, stopped %ld.%06ld secs later.\n"),
2066 (long int) ts
->start_time
/ 1000000,
2067 (long int) ts
->start_time
% 1000000,
2068 (long int) run_time
/ 1000000,
2069 (long int) run_time
% 1000000);
2072 printf_filtered (_("Trace started at %ld.%06ld secs.\n"),
2073 (long int) ts
->start_time
/ 1000000,
2074 (long int) ts
->start_time
% 1000000);
2076 else if (ts
->stop_time
)
2077 printf_filtered (_("Trace stopped at %ld.%06ld secs.\n"),
2078 (long int) ts
->stop_time
/ 1000000,
2079 (long int) ts
->stop_time
% 1000000);
2081 /* Now report any per-tracepoint status available. */
2082 tp_vec
= all_tracepoints ();
2084 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2085 target_get_tracepoint_status (t
, NULL
);
2087 VEC_free (breakpoint_p
, tp_vec
);
2090 /* Report the trace status to uiout, in a way suitable for MI, and not
2091 suitable for CLI. If ON_STOP is true, suppress a few fields that
2092 are not meaningful in the -trace-stop response.
2094 The implementation is essentially parallel to trace_status_command, but
2095 merging them will result in unreadable code. */
2097 trace_status_mi (int on_stop
)
2099 struct ui_out
*uiout
= current_uiout
;
2100 struct trace_status
*ts
= current_trace_status ();
2103 status
= target_get_trace_status (ts
);
2105 if (status
== -1 && ts
->filename
== NULL
)
2107 ui_out_field_string (uiout
, "supported", "0");
2111 if (ts
->filename
!= NULL
)
2112 ui_out_field_string (uiout
, "supported", "file");
2114 ui_out_field_string (uiout
, "supported", "1");
2116 if (ts
->filename
!= NULL
)
2117 ui_out_field_string (uiout
, "trace-file", ts
->filename
);
2119 gdb_assert (ts
->running_known
);
2123 ui_out_field_string (uiout
, "running", "1");
2125 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
2126 Given that the frontend gets the status either on -trace-stop, or from
2127 -trace-status after re-connection, it does not seem like this
2128 information is necessary for anything. It is not necessary for either
2129 figuring the vital state of the target nor for navigation of trace
2130 frames. If the frontend wants to show the current state is some
2131 configure dialog, it can request the value when such dialog is
2132 invoked by the user. */
2136 char *stop_reason
= NULL
;
2137 int stopping_tracepoint
= -1;
2140 ui_out_field_string (uiout
, "running", "0");
2142 if (ts
->stop_reason
!= trace_stop_reason_unknown
)
2144 switch (ts
->stop_reason
)
2147 stop_reason
= "request";
2149 case trace_buffer_full
:
2150 stop_reason
= "overflow";
2152 case trace_disconnected
:
2153 stop_reason
= "disconnection";
2155 case tracepoint_passcount
:
2156 stop_reason
= "passcount";
2157 stopping_tracepoint
= ts
->stopping_tracepoint
;
2159 case tracepoint_error
:
2160 stop_reason
= "error";
2161 stopping_tracepoint
= ts
->stopping_tracepoint
;
2167 ui_out_field_string (uiout
, "stop-reason", stop_reason
);
2168 if (stopping_tracepoint
!= -1)
2169 ui_out_field_int (uiout
, "stopping-tracepoint",
2170 stopping_tracepoint
);
2171 if (ts
->stop_reason
== tracepoint_error
)
2172 ui_out_field_string (uiout
, "error-description",
2178 if (ts
->traceframe_count
!= -1)
2179 ui_out_field_int (uiout
, "frames", ts
->traceframe_count
);
2180 if (ts
->traceframes_created
!= -1)
2181 ui_out_field_int (uiout
, "frames-created", ts
->traceframes_created
);
2182 if (ts
->buffer_size
!= -1)
2183 ui_out_field_int (uiout
, "buffer-size", ts
->buffer_size
);
2184 if (ts
->buffer_free
!= -1)
2185 ui_out_field_int (uiout
, "buffer-free", ts
->buffer_free
);
2187 ui_out_field_int (uiout
, "disconnected", ts
->disconnected_tracing
);
2188 ui_out_field_int (uiout
, "circular", ts
->circular_buffer
);
2190 ui_out_field_string (uiout
, "user-name", ts
->user_name
);
2191 ui_out_field_string (uiout
, "notes", ts
->notes
);
2196 xsnprintf (buf
, sizeof buf
, "%ld.%06ld",
2197 (long int) ts
->start_time
/ 1000000,
2198 (long int) ts
->start_time
% 1000000);
2199 ui_out_field_string (uiout
, "start-time", buf
);
2200 xsnprintf (buf
, sizeof buf
, "%ld.%06ld",
2201 (long int) ts
->stop_time
/ 1000000,
2202 (long int) ts
->stop_time
% 1000000);
2203 ui_out_field_string (uiout
, "stop-time", buf
);
2207 /* Check if a trace run is ongoing. If so, and FROM_TTY, query the
2208 user if she really wants to detach. */
2211 query_if_trace_running (int from_tty
)
2216 /* It can happen that the target that was tracing went away on its
2217 own, and we didn't notice. Get a status update, and if the
2218 current target doesn't even do tracing, then assume it's not
2220 if (target_get_trace_status (current_trace_status ()) < 0)
2221 current_trace_status ()->running
= 0;
2223 /* If running interactively, give the user the option to cancel and
2224 then decide what to do differently with the run. Scripts are
2225 just going to disconnect and let the target deal with it,
2226 according to how it's been instructed previously via
2227 disconnected-tracing. */
2228 if (current_trace_status ()->running
)
2230 process_tracepoint_on_disconnect ();
2232 if (current_trace_status ()->disconnected_tracing
)
2234 if (!query (_("Trace is running and will "
2235 "continue after detach; detach anyway? ")))
2236 error (_("Not confirmed."));
2240 if (!query (_("Trace is running but will "
2241 "stop on detach; detach anyway? ")))
2242 error (_("Not confirmed."));
2247 /* This function handles the details of what to do about an ongoing
2248 tracing run if the user has asked to detach or otherwise disconnect
2252 disconnect_tracing (void)
2254 /* Also we want to be out of tfind mode, otherwise things can get
2255 confusing upon reconnection. Just use these calls instead of
2256 full tfind_1 behavior because we're in the middle of detaching,
2257 and there's no point to updating current stack frame etc. */
2258 set_current_traceframe (-1);
2259 set_tracepoint_num (-1);
2260 set_traceframe_context (NULL
);
2263 /* Worker function for the various flavors of the tfind command. */
2265 tfind_1 (enum trace_find_type type
, int num
,
2266 CORE_ADDR addr1
, CORE_ADDR addr2
,
2269 int target_frameno
= -1, target_tracept
= -1;
2270 struct frame_id old_frame_id
= null_frame_id
;
2271 struct tracepoint
*tp
;
2272 struct ui_out
*uiout
= current_uiout
;
2274 /* Only try to get the current stack frame if we have a chance of
2275 succeeding. In particular, if we're trying to get a first trace
2276 frame while all threads are running, it's not going to succeed,
2277 so leave it with a default value and let the frame comparison
2278 below (correctly) decide to print out the source location of the
2280 if (!(type
== tfind_number
&& num
== -1)
2281 && (has_stack_frames () || traceframe_number
>= 0))
2282 old_frame_id
= get_frame_id (get_current_frame ());
2284 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
2287 if (type
== tfind_number
2289 && target_frameno
== -1)
2291 /* We told the target to get out of tfind mode, and it did. */
2293 else if (target_frameno
== -1)
2295 /* A request for a non-existent trace frame has failed.
2296 Our response will be different, depending on FROM_TTY:
2298 If FROM_TTY is true, meaning that this command was
2299 typed interactively by the user, then give an error
2300 and DO NOT change the state of traceframe_number etc.
2302 However if FROM_TTY is false, meaning that we're either
2303 in a script, a loop, or a user-defined command, then
2304 DON'T give an error, but DO change the state of
2305 traceframe_number etc. to invalid.
2307 The rationalle is that if you typed the command, you
2308 might just have committed a typo or something, and you'd
2309 like to NOT lose your current debugging state. However
2310 if you're in a user-defined command or especially in a
2311 loop, then you need a way to detect that the command
2312 failed WITHOUT aborting. This allows you to write
2313 scripts that search thru the trace buffer until the end,
2314 and then continue on to do something else. */
2317 error (_("Target failed to find requested trace frame."));
2321 printf_filtered ("End of trace buffer.\n");
2322 #if 0 /* dubious now? */
2323 /* The following will not recurse, since it's
2325 trace_find_command ("-1", from_tty
);
2330 tp
= get_tracepoint_by_number_on_target (target_tracept
);
2332 reinit_frame_cache ();
2333 target_dcache_invalidate ();
2335 set_tracepoint_num (tp
? tp
->base
.number
: target_tracept
);
2337 if (target_frameno
!= get_traceframe_number ())
2338 observer_notify_traceframe_changed (target_frameno
, tracepoint_number
);
2340 set_current_traceframe (target_frameno
);
2342 if (target_frameno
== -1)
2343 set_traceframe_context (NULL
);
2345 set_traceframe_context (get_current_frame ());
2347 if (traceframe_number
>= 0)
2349 /* Use different branches for MI and CLI to make CLI messages
2351 if (ui_out_is_mi_like_p (uiout
))
2353 ui_out_field_string (uiout
, "found", "1");
2354 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
2355 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
2359 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
2360 traceframe_number
, tracepoint_number
);
2365 if (ui_out_is_mi_like_p (uiout
))
2366 ui_out_field_string (uiout
, "found", "0");
2367 else if (type
== tfind_number
&& num
== -1)
2368 printf_unfiltered (_("No longer looking at any trace frame\n"));
2369 else /* This case may never occur, check. */
2370 printf_unfiltered (_("No trace frame found\n"));
2373 /* If we're in nonstop mode and getting out of looking at trace
2374 frames, there won't be any current frame to go back to and
2377 && (has_stack_frames () || traceframe_number
>= 0))
2379 enum print_what print_what
;
2381 /* NOTE: in imitation of the step command, try to determine
2382 whether we have made a transition from one function to
2383 another. If so, we'll print the "stack frame" (ie. the new
2384 function and it's arguments) -- otherwise we'll just show the
2387 if (frame_id_eq (old_frame_id
,
2388 get_frame_id (get_current_frame ())))
2389 print_what
= SRC_LINE
;
2391 print_what
= SRC_AND_LOC
;
2393 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
2398 /* trace_find_command takes a trace frame number n,
2399 sends "QTFrame:<n>" to the target,
2400 and accepts a reply that may contain several optional pieces
2401 of information: a frame number, a tracepoint number, and an
2402 indication of whether this is a trap frame or a stepping frame.
2404 The minimal response is just "OK" (which indicates that the
2405 target does not give us a frame number or a tracepoint number).
2406 Instead of that, the target may send us a string containing
2408 F<hexnum> (gives the selected frame number)
2409 T<hexnum> (gives the selected tracepoint number)
2414 trace_find_command (char *args
, int from_tty
)
2415 { /* This should only be called with a numeric argument. */
2418 if (current_trace_status ()->running
2419 && current_trace_status ()->filename
== NULL
)
2420 error (_("May not look at trace frames while trace is running."));
2422 if (args
== 0 || *args
== 0)
2423 { /* TFIND with no args means find NEXT trace frame. */
2424 if (traceframe_number
== -1)
2425 frameno
= 0; /* "next" is first one. */
2427 frameno
= traceframe_number
+ 1;
2429 else if (0 == strcmp (args
, "-"))
2431 if (traceframe_number
== -1)
2432 error (_("not debugging trace buffer"));
2433 else if (from_tty
&& traceframe_number
== 0)
2434 error (_("already at start of trace buffer"));
2436 frameno
= traceframe_number
- 1;
2438 /* A hack to work around eval's need for fp to have been collected. */
2439 else if (0 == strcmp (args
, "-1"))
2442 frameno
= parse_and_eval_long (args
);
2445 error (_("invalid input (%d is less than zero)"), frameno
);
2447 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
2452 trace_find_end_command (char *args
, int from_tty
)
2454 trace_find_command ("-1", from_tty
);
2459 trace_find_start_command (char *args
, int from_tty
)
2461 trace_find_command ("0", from_tty
);
2464 /* tfind pc command */
2466 trace_find_pc_command (char *args
, int from_tty
)
2470 if (current_trace_status ()->running
2471 && current_trace_status ()->filename
== NULL
)
2472 error (_("May not look at trace frames while trace is running."));
2474 if (args
== 0 || *args
== 0)
2475 pc
= regcache_read_pc (get_current_regcache ());
2477 pc
= parse_and_eval_address (args
);
2479 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
2482 /* tfind tracepoint command */
2484 trace_find_tracepoint_command (char *args
, int from_tty
)
2487 struct tracepoint
*tp
;
2489 if (current_trace_status ()->running
2490 && current_trace_status ()->filename
== NULL
)
2491 error (_("May not look at trace frames while trace is running."));
2493 if (args
== 0 || *args
== 0)
2495 if (tracepoint_number
== -1)
2496 error (_("No current tracepoint -- please supply an argument."));
2498 tdp
= tracepoint_number
; /* Default is current TDP. */
2501 tdp
= parse_and_eval_long (args
);
2503 /* If we have the tracepoint on hand, use the number that the
2504 target knows about (which may be different if we disconnected
2505 and reconnected). */
2506 tp
= get_tracepoint (tdp
);
2508 tdp
= tp
->number_on_target
;
2510 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
2513 /* TFIND LINE command:
2515 This command will take a sourceline for argument, just like BREAK
2516 or TRACE (ie. anything that "decode_line_1" can handle).
2518 With no argument, this command will find the next trace frame
2519 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2522 trace_find_line_command (char *args
, int from_tty
)
2524 static CORE_ADDR start_pc
, end_pc
;
2525 struct symtabs_and_lines sals
;
2526 struct symtab_and_line sal
;
2527 struct cleanup
*old_chain
;
2529 if (current_trace_status ()->running
2530 && current_trace_status ()->filename
== NULL
)
2531 error (_("May not look at trace frames while trace is running."));
2533 if (args
== 0 || *args
== 0)
2535 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2537 sals
.sals
= (struct symtab_and_line
*)
2538 xmalloc (sizeof (struct symtab_and_line
));
2543 sals
= decode_line_with_current_source (args
, DECODE_LINE_FUNFIRSTLINE
);
2547 old_chain
= make_cleanup (xfree
, sals
.sals
);
2548 if (sal
.symtab
== 0)
2549 error (_("No line number information available."));
2551 if (sal
.line
> 0 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2553 if (start_pc
== end_pc
)
2555 printf_filtered ("Line %d of \"%s\"",
2557 symtab_to_filename_for_display (sal
.symtab
));
2559 printf_filtered (" is at address ");
2560 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2562 printf_filtered (" but contains no code.\n");
2563 sal
= find_pc_line (start_pc
, 0);
2565 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2566 && start_pc
!= end_pc
)
2567 printf_filtered ("Attempting to find line %d instead.\n",
2570 error (_("Cannot find a good line."));
2574 /* Is there any case in which we get here, and have an address
2575 which the user would want to see? If we have debugging
2576 symbols and no line numbers? */
2577 error (_("Line number %d is out of range for \"%s\"."),
2578 sal
.line
, symtab_to_filename_for_display (sal
.symtab
));
2580 /* Find within range of stated line. */
2582 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2584 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2585 do_cleanups (old_chain
);
2588 /* tfind range command */
2590 trace_find_range_command (char *args
, int from_tty
)
2592 static CORE_ADDR start
, stop
;
2595 if (current_trace_status ()->running
2596 && current_trace_status ()->filename
== NULL
)
2597 error (_("May not look at trace frames while trace is running."));
2599 if (args
== 0 || *args
== 0)
2600 { /* XXX FIXME: what should default behavior be? */
2601 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2605 if (0 != (tmp
= strchr (args
, ',')))
2607 *tmp
++ = '\0'; /* Terminate start address. */
2608 tmp
= skip_spaces (tmp
);
2609 start
= parse_and_eval_address (args
);
2610 stop
= parse_and_eval_address (tmp
);
2613 { /* No explicit end address? */
2614 start
= parse_and_eval_address (args
);
2615 stop
= start
+ 1; /* ??? */
2618 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2621 /* tfind outside command */
2623 trace_find_outside_command (char *args
, int from_tty
)
2625 CORE_ADDR start
, stop
;
2628 if (current_trace_status ()->running
2629 && current_trace_status ()->filename
== NULL
)
2630 error (_("May not look at trace frames while trace is running."));
2632 if (args
== 0 || *args
== 0)
2633 { /* XXX FIXME: what should default behavior be? */
2634 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2638 if (0 != (tmp
= strchr (args
, ',')))
2640 *tmp
++ = '\0'; /* Terminate start address. */
2641 tmp
= skip_spaces (tmp
);
2642 start
= parse_and_eval_address (args
);
2643 stop
= parse_and_eval_address (tmp
);
2646 { /* No explicit end address? */
2647 start
= parse_and_eval_address (args
);
2648 stop
= start
+ 1; /* ??? */
2651 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2654 /* info scope command: list the locals for a scope. */
2656 scope_info (char *args
, int from_tty
)
2658 struct symtabs_and_lines sals
;
2660 struct minimal_symbol
*msym
;
2661 struct block
*block
;
2662 const char *symname
;
2663 char *save_args
= args
;
2664 struct block_iterator iter
;
2666 struct gdbarch
*gdbarch
;
2669 if (args
== 0 || *args
== 0)
2670 error (_("requires an argument (function, "
2671 "line or *addr) to define a scope"));
2673 sals
= decode_line_1 (&args
, DECODE_LINE_FUNFIRSTLINE
, NULL
, 0);
2674 if (sals
.nelts
== 0)
2675 return; /* Presumably decode_line_1 has already warned. */
2677 /* Resolve line numbers to PC. */
2678 resolve_sal_pc (&sals
.sals
[0]);
2679 block
= block_for_pc (sals
.sals
[0].pc
);
2683 QUIT
; /* Allow user to bail out with ^C. */
2684 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2686 QUIT
; /* Allow user to bail out with ^C. */
2688 printf_filtered ("Scope for %s:\n", save_args
);
2691 symname
= SYMBOL_PRINT_NAME (sym
);
2692 if (symname
== NULL
|| *symname
== '\0')
2693 continue; /* Probably botched, certainly useless. */
2695 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2697 printf_filtered ("Symbol %s is ", symname
);
2699 if (SYMBOL_COMPUTED_OPS (sym
) != NULL
)
2700 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
,
2701 BLOCK_START (block
),
2705 switch (SYMBOL_CLASS (sym
))
2708 case LOC_UNDEF
: /* Messed up symbol? */
2709 printf_filtered ("a bogus symbol, class %d.\n",
2710 SYMBOL_CLASS (sym
));
2711 count
--; /* Don't count this one. */
2714 printf_filtered ("a constant with value %s (%s)",
2715 plongest (SYMBOL_VALUE (sym
)),
2716 hex_string (SYMBOL_VALUE (sym
)));
2718 case LOC_CONST_BYTES
:
2719 printf_filtered ("constant bytes: ");
2720 if (SYMBOL_TYPE (sym
))
2721 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2722 fprintf_filtered (gdb_stdout
, " %02x",
2723 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2726 printf_filtered ("in static storage at address ");
2727 printf_filtered ("%s", paddress (gdbarch
,
2728 SYMBOL_VALUE_ADDRESS (sym
)));
2731 /* GDBARCH is the architecture associated with the objfile
2732 the symbol is defined in; the target architecture may be
2733 different, and may provide additional registers. However,
2734 we do not know the target architecture at this point.
2735 We assume the objfile architecture will contain all the
2736 standard registers that occur in debug info in that
2738 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
,
2741 if (SYMBOL_IS_ARGUMENT (sym
))
2742 printf_filtered ("an argument in register $%s",
2743 gdbarch_register_name (gdbarch
, regno
));
2745 printf_filtered ("a local variable in register $%s",
2746 gdbarch_register_name (gdbarch
, regno
));
2749 printf_filtered ("an argument at stack/frame offset %s",
2750 plongest (SYMBOL_VALUE (sym
)));
2753 printf_filtered ("a local variable at frame offset %s",
2754 plongest (SYMBOL_VALUE (sym
)));
2757 printf_filtered ("a reference argument at offset %s",
2758 plongest (SYMBOL_VALUE (sym
)));
2760 case LOC_REGPARM_ADDR
:
2761 /* Note comment at LOC_REGISTER. */
2762 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
,
2764 printf_filtered ("the address of an argument, in register $%s",
2765 gdbarch_register_name (gdbarch
, regno
));
2768 printf_filtered ("a typedef.\n");
2771 printf_filtered ("a label at address ");
2772 printf_filtered ("%s", paddress (gdbarch
,
2773 SYMBOL_VALUE_ADDRESS (sym
)));
2776 printf_filtered ("a function at address ");
2777 printf_filtered ("%s",
2778 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2780 case LOC_UNRESOLVED
:
2781 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2784 printf_filtered ("Unresolved Static");
2787 printf_filtered ("static storage at address ");
2788 printf_filtered ("%s",
2790 SYMBOL_VALUE_ADDRESS (msym
)));
2793 case LOC_OPTIMIZED_OUT
:
2794 printf_filtered ("optimized out.\n");
2797 gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
2800 if (SYMBOL_TYPE (sym
))
2801 printf_filtered (", length %d.\n",
2802 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2804 if (BLOCK_FUNCTION (block
))
2807 block
= BLOCK_SUPERBLOCK (block
);
2810 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2814 /* Helper for trace_dump_command. Dump the action list starting at
2815 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2816 actions of the body of a while-stepping action. STEPPING_FRAME is
2817 set if the current traceframe was determined to be a while-stepping
2821 trace_dump_actions (struct command_line
*action
,
2822 int stepping_actions
, int stepping_frame
,
2825 const char *action_exp
, *next_comma
;
2827 for (; action
!= NULL
; action
= action
->next
)
2829 struct cmd_list_element
*cmd
;
2831 QUIT
; /* Allow user to bail out with ^C. */
2832 action_exp
= action
->line
;
2833 action_exp
= skip_spaces_const (action_exp
);
2835 /* The collection actions to be done while stepping are
2836 bracketed by the commands "while-stepping" and "end". */
2838 if (*action_exp
== '#') /* comment line */
2841 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2843 error (_("Bad action list item: %s"), action_exp
);
2845 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2849 for (i
= 0; i
< action
->body_count
; ++i
)
2850 trace_dump_actions (action
->body_list
[i
],
2851 1, stepping_frame
, from_tty
);
2853 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2855 /* Display the collected data.
2856 For the trap frame, display only what was collected at
2857 the trap. Likewise for stepping frames, display only
2858 what was collected while stepping. This means that the
2859 two boolean variables, STEPPING_FRAME and
2860 STEPPING_ACTIONS should be equal. */
2861 if (stepping_frame
== stepping_actions
)
2864 struct cleanup
*old_chain
2865 = make_cleanup (free_current_contents
, &cmd
);
2866 int trace_string
= 0;
2868 if (*action_exp
== '/')
2869 action_exp
= decode_agent_options (action_exp
, &trace_string
);
2872 { /* Repeat over a comma-separated list. */
2873 QUIT
; /* Allow user to bail out with ^C. */
2874 if (*action_exp
== ',')
2876 action_exp
= skip_spaces_const (action_exp
);
2878 next_comma
= strchr (action_exp
, ',');
2880 if (0 == strncasecmp (action_exp
, "$reg", 4))
2881 registers_info (NULL
, from_tty
);
2882 else if (0 == strncasecmp (action_exp
, "$_ret", 5))
2884 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2885 locals_info (NULL
, from_tty
);
2886 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2887 args_info (NULL
, from_tty
);
2890 if (next_comma
!= NULL
)
2892 size_t len
= next_comma
- action_exp
;
2894 cmd
= xrealloc (cmd
, len
+ 1);
2895 memcpy (cmd
, action_exp
, len
);
2900 size_t len
= strlen (action_exp
);
2902 cmd
= xrealloc (cmd
, len
+ 1);
2903 memcpy (cmd
, action_exp
, len
+ 1);
2906 printf_filtered ("%s = ", cmd
);
2907 output_command_const (cmd
, from_tty
);
2908 printf_filtered ("\n");
2910 action_exp
= next_comma
;
2912 while (action_exp
&& *action_exp
== ',');
2914 do_cleanups (old_chain
);
2920 /* The tdump command. */
2923 trace_dump_command (char *args
, int from_tty
)
2925 struct regcache
*regcache
;
2926 struct tracepoint
*t
;
2927 int stepping_frame
= 0;
2928 struct bp_location
*loc
;
2929 char *default_collect_line
= NULL
;
2930 struct command_line
*actions
, *default_collect_action
= NULL
;
2931 struct cleanup
*old_chain
= NULL
;
2933 if (tracepoint_number
== -1)
2935 warning (_("No current trace frame."));
2939 t
= get_tracepoint (tracepoint_number
);
2942 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2945 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2946 tracepoint_number
, traceframe_number
);
2948 /* The current frame is a trap frame if the frame PC is equal
2949 to the tracepoint PC. If not, then the current frame was
2950 collected during single-stepping. */
2952 regcache
= get_current_regcache ();
2954 /* If the traceframe's address matches any of the tracepoint's
2955 locations, assume it is a direct hit rather than a while-stepping
2956 frame. (FIXME this is not reliable, should record each frame's
2959 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
2960 if (loc
->address
== regcache_read_pc (regcache
))
2963 actions
= breakpoint_commands (&t
->base
);
2965 /* If there is a default-collect list, make up a collect command,
2966 prepend to the tracepoint's commands, and pass the whole mess to
2967 the trace dump scanner. We need to validate because
2968 default-collect might have been junked since the trace run. */
2969 if (*default_collect
)
2971 default_collect_line
= xstrprintf ("collect %s", default_collect
);
2972 old_chain
= make_cleanup (xfree
, default_collect_line
);
2973 validate_actionline (default_collect_line
, &t
->base
);
2974 default_collect_action
= xmalloc (sizeof (struct command_line
));
2975 make_cleanup (xfree
, default_collect_action
);
2976 default_collect_action
->next
= actions
;
2977 default_collect_action
->line
= default_collect_line
;
2978 actions
= default_collect_action
;
2981 trace_dump_actions (actions
, 0, stepping_frame
, from_tty
);
2983 if (*default_collect
)
2984 do_cleanups (old_chain
);
2987 /* Encode a piece of a tracepoint's source-level definition in a form
2988 that is suitable for both protocol and saving in files. */
2989 /* This version does not do multiple encodes for long strings; it should
2990 return an offset to the next piece to encode. FIXME */
2993 encode_source_string (int tpnum
, ULONGEST addr
,
2994 char *srctype
, char *src
, char *buf
, int buf_size
)
2996 if (80 + strlen (srctype
) > buf_size
)
2997 error (_("Buffer too small for source encoding"));
2998 sprintf (buf
, "%x:%s:%s:%x:%x:",
2999 tpnum
, phex_nz (addr
, sizeof (addr
)),
3000 srctype
, 0, (int) strlen (src
));
3001 if (strlen (buf
) + strlen (src
) * 2 >= buf_size
)
3002 error (_("Source string too long for buffer"));
3003 bin2hex (src
, buf
+ strlen (buf
), 0);
3007 /* Free trace file writer. */
3010 trace_file_writer_xfree (void *arg
)
3012 struct trace_file_writer
*writer
= arg
;
3014 writer
->ops
->dtor (writer
);
3018 /* TFILE trace writer. */
3020 struct tfile_trace_file_writer
3022 struct trace_file_writer base
;
3024 /* File pointer to tfile trace file. */
3026 /* Path name of the tfile trace file. */
3030 /* This is the implementation of trace_file_write_ops method
3031 target_save. We just call the generic target
3032 target_save_trace_data to do target-side saving. */
3035 tfile_target_save (struct trace_file_writer
*self
,
3036 const char *filename
)
3038 int err
= target_save_trace_data (filename
);
3043 /* This is the implementation of trace_file_write_ops method
3047 tfile_dtor (struct trace_file_writer
*self
)
3049 struct tfile_trace_file_writer
*writer
3050 = (struct tfile_trace_file_writer
*) self
;
3052 xfree (writer
->pathname
);
3054 if (writer
->fp
!= NULL
)
3055 fclose (writer
->fp
);
3058 /* This is the implementation of trace_file_write_ops method
3059 start. It creates the trace file FILENAME and registers some
3063 tfile_start (struct trace_file_writer
*self
, const char *filename
)
3065 struct tfile_trace_file_writer
*writer
3066 = (struct tfile_trace_file_writer
*) self
;
3068 writer
->pathname
= tilde_expand (filename
);
3069 writer
->fp
= fopen (writer
->pathname
, "wb");
3070 if (writer
->fp
== NULL
)
3071 error (_("Unable to open file '%s' for saving trace data (%s)"),
3072 filename
, safe_strerror (errno
));
3075 /* This is the implementation of trace_file_write_ops method
3076 write_header. Write the TFILE header. */
3079 tfile_write_header (struct trace_file_writer
*self
)
3081 struct tfile_trace_file_writer
*writer
3082 = (struct tfile_trace_file_writer
*) self
;
3085 /* Write a file header, with a high-bit-set char to indicate a
3086 binary file, plus a hint as what this file is, and a version
3087 number in case of future needs. */
3088 written
= fwrite ("\x7fTRACE0\n", 8, 1, writer
->fp
);
3090 perror_with_name (writer
->pathname
);
3093 /* This is the implementation of trace_file_write_ops method
3094 write_regblock_type. Write the size of register block. */
3097 tfile_write_regblock_type (struct trace_file_writer
*self
, int size
)
3099 struct tfile_trace_file_writer
*writer
3100 = (struct tfile_trace_file_writer
*) self
;
3102 fprintf (writer
->fp
, "R %x\n", size
);
3105 /* This is the implementation of trace_file_write_ops method
3109 tfile_write_status (struct trace_file_writer
*self
,
3110 struct trace_status
*ts
)
3112 struct tfile_trace_file_writer
*writer
3113 = (struct tfile_trace_file_writer
*) self
;
3115 fprintf (writer
->fp
, "status %c;%s",
3116 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
3117 if (ts
->stop_reason
== tracepoint_error
3118 || ts
->stop_reason
== tstop_command
)
3120 char *buf
= (char *) alloca (strlen (ts
->stop_desc
) * 2 + 1);
3122 bin2hex ((gdb_byte
*) ts
->stop_desc
, buf
, 0);
3123 fprintf (writer
->fp
, ":%s", buf
);
3125 fprintf (writer
->fp
, ":%x", ts
->stopping_tracepoint
);
3126 if (ts
->traceframe_count
>= 0)
3127 fprintf (writer
->fp
, ";tframes:%x", ts
->traceframe_count
);
3128 if (ts
->traceframes_created
>= 0)
3129 fprintf (writer
->fp
, ";tcreated:%x", ts
->traceframes_created
);
3130 if (ts
->buffer_free
>= 0)
3131 fprintf (writer
->fp
, ";tfree:%x", ts
->buffer_free
);
3132 if (ts
->buffer_size
>= 0)
3133 fprintf (writer
->fp
, ";tsize:%x", ts
->buffer_size
);
3134 if (ts
->disconnected_tracing
)
3135 fprintf (writer
->fp
, ";disconn:%x", ts
->disconnected_tracing
);
3136 if (ts
->circular_buffer
)
3137 fprintf (writer
->fp
, ";circular:%x", ts
->circular_buffer
);
3138 if (ts
->notes
!= NULL
)
3140 char *buf
= (char *) alloca (strlen (ts
->notes
) * 2 + 1);
3142 bin2hex ((gdb_byte
*) ts
->notes
, buf
, 0);
3143 fprintf (writer
->fp
, ";notes:%s", buf
);
3145 if (ts
->user_name
!= NULL
)
3147 char *buf
= (char *) alloca (strlen (ts
->user_name
) * 2 + 1);
3149 bin2hex ((gdb_byte
*) ts
->user_name
, buf
, 0);
3150 fprintf (writer
->fp
, ";username:%s", buf
);
3152 fprintf (writer
->fp
, "\n");
3155 /* This is the implementation of trace_file_write_ops method
3156 write_uploaded_tsv. */
3159 tfile_write_uploaded_tsv (struct trace_file_writer
*self
,
3160 struct uploaded_tsv
*utsv
)
3163 struct tfile_trace_file_writer
*writer
3164 = (struct tfile_trace_file_writer
*) self
;
3168 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
3169 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
3172 fprintf (writer
->fp
, "tsv %x:%s:%x:%s\n",
3173 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
3174 utsv
->builtin
, buf
);
3180 #define MAX_TRACE_UPLOAD 2000
3182 /* This is the implementation of trace_file_write_ops method
3183 write_uploaded_tp. */
3186 tfile_write_uploaded_tp (struct trace_file_writer
*self
,
3187 struct uploaded_tp
*utp
)
3189 struct tfile_trace_file_writer
*writer
3190 = (struct tfile_trace_file_writer
*) self
;
3193 gdb_byte buf
[MAX_TRACE_UPLOAD
];
3195 fprintf (writer
->fp
, "tp T%x:%s:%c:%x:%x",
3196 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
3197 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
3198 if (utp
->type
== bp_fast_tracepoint
)
3199 fprintf (writer
->fp
, ":F%x", utp
->orig_size
);
3201 fprintf (writer
->fp
,
3202 ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
3204 fprintf (writer
->fp
, "\n");
3205 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
3206 fprintf (writer
->fp
, "tp A%x:%s:%s\n",
3207 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
3208 for (a
= 0; VEC_iterate (char_ptr
, utp
->step_actions
, a
, act
); ++a
)
3209 fprintf (writer
->fp
, "tp S%x:%s:%s\n",
3210 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
3213 encode_source_string (utp
->number
, utp
->addr
,
3214 "at", utp
->at_string
, buf
, MAX_TRACE_UPLOAD
);
3215 fprintf (writer
->fp
, "tp Z%s\n", buf
);
3217 if (utp
->cond_string
)
3219 encode_source_string (utp
->number
, utp
->addr
,
3220 "cond", utp
->cond_string
,
3221 buf
, MAX_TRACE_UPLOAD
);
3222 fprintf (writer
->fp
, "tp Z%s\n", buf
);
3224 for (a
= 0; VEC_iterate (char_ptr
, utp
->cmd_strings
, a
, act
); ++a
)
3226 encode_source_string (utp
->number
, utp
->addr
, "cmd", act
,
3227 buf
, MAX_TRACE_UPLOAD
);
3228 fprintf (writer
->fp
, "tp Z%s\n", buf
);
3230 fprintf (writer
->fp
, "tp V%x:%s:%x:%s\n",
3231 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
3233 phex_nz (utp
->traceframe_usage
,
3234 sizeof (utp
->traceframe_usage
)));
3237 /* This is the implementation of trace_file_write_ops method
3238 write_definition_end. */
3241 tfile_write_definition_end (struct trace_file_writer
*self
)
3243 struct tfile_trace_file_writer
*writer
3244 = (struct tfile_trace_file_writer
*) self
;
3246 fprintf (writer
->fp
, "\n");
3249 /* This is the implementation of trace_file_write_ops method
3253 tfile_write_raw_data (struct trace_file_writer
*self
, gdb_byte
*buf
,
3256 struct tfile_trace_file_writer
*writer
3257 = (struct tfile_trace_file_writer
*) self
;
3259 if (fwrite (buf
, len
, 1, writer
->fp
) < 1)
3260 perror_with_name (writer
->pathname
);
3263 /* This is the implementation of trace_file_write_ops method
3267 tfile_end (struct trace_file_writer
*self
)
3269 struct tfile_trace_file_writer
*writer
3270 = (struct tfile_trace_file_writer
*) self
;
3271 uint32_t gotten
= 0;
3273 /* Mark the end of trace data. */
3274 if (fwrite (&gotten
, 4, 1, writer
->fp
) < 1)
3275 perror_with_name (writer
->pathname
);
3278 /* Operations to write trace buffers into TFILE format. */
3280 static const struct trace_file_write_ops tfile_write_ops
=
3286 tfile_write_regblock_type
,
3288 tfile_write_uploaded_tsv
,
3289 tfile_write_uploaded_tp
,
3290 tfile_write_definition_end
,
3291 tfile_write_raw_data
,
3296 /* Helper macros. */
3298 #define TRACE_WRITE_R_BLOCK(writer, buf, size) \
3299 writer->ops->frame_ops->write_r_block ((writer), (buf), (size))
3300 #define TRACE_WRITE_M_BLOCK_HEADER(writer, addr, size) \
3301 writer->ops->frame_ops->write_m_block_header ((writer), (addr), \
3303 #define TRACE_WRITE_M_BLOCK_MEMORY(writer, buf, size) \
3304 writer->ops->frame_ops->write_m_block_memory ((writer), (buf), \
3306 #define TRACE_WRITE_V_BLOCK(writer, num, val) \
3307 writer->ops->frame_ops->write_v_block ((writer), (num), (val))
3309 /* Save tracepoint data to file named FILENAME through WRITER. WRITER
3310 determines the trace file format. If TARGET_DOES_SAVE is non-zero,
3311 the save is performed on the target, otherwise GDB obtains all trace
3312 data and saves it locally. */
3315 trace_save (const char *filename
, struct trace_file_writer
*writer
,
3316 int target_does_save
)
3318 struct trace_status
*ts
= current_trace_status ();
3320 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
3321 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
3323 ULONGEST offset
= 0;
3324 gdb_byte buf
[MAX_TRACE_UPLOAD
];
3326 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch ());
3328 /* If the target is to save the data to a file on its own, then just
3329 send the command and be done with it. */
3330 if (target_does_save
)
3332 if (!writer
->ops
->target_save (writer
, filename
))
3333 error (_("Target failed to save trace data to '%s'."),
3338 /* Get the trace status first before opening the file, so if the
3339 target is losing, we can get out without touching files. */
3340 status
= target_get_trace_status (ts
);
3342 writer
->ops
->start (writer
, filename
);
3344 writer
->ops
->write_header (writer
);
3346 /* Write descriptive info. */
3348 /* Write out the size of a register block. */
3349 writer
->ops
->write_regblock_type (writer
, trace_regblock_size
);
3351 /* Write out status of the tracing run (aka "tstatus" info). */
3352 writer
->ops
->write_status (writer
, ts
);
3354 /* Note that we want to upload tracepoints and save those, rather
3355 than simply writing out the local ones, because the user may have
3356 changed tracepoints in GDB in preparation for a future tracing
3357 run, or maybe just mass-deleted all types of breakpoints as part
3358 of cleaning up. So as not to contaminate the session, leave the
3359 data in its uploaded form, don't make into real tracepoints. */
3361 /* Get trace state variables first, they may be checked when parsing
3362 uploaded commands. */
3364 target_upload_trace_state_variables (&uploaded_tsvs
);
3366 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
3367 writer
->ops
->write_uploaded_tsv (writer
, utsv
);
3369 free_uploaded_tsvs (&uploaded_tsvs
);
3371 target_upload_tracepoints (&uploaded_tps
);
3373 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
3374 target_get_tracepoint_status (NULL
, utp
);
3376 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
3377 writer
->ops
->write_uploaded_tp (writer
, utp
);
3379 free_uploaded_tps (&uploaded_tps
);
3381 /* Mark the end of the definition section. */
3382 writer
->ops
->write_definition_end (writer
);
3384 /* Get and write the trace data proper. */
3389 /* The writer supports writing the contents of trace buffer
3390 directly to trace file. Don't parse the contents of trace
3392 if (writer
->ops
->write_trace_buffer
!= NULL
)
3394 /* We ask for big blocks, in the hopes of efficiency, but
3395 will take less if the target has packet size limitations
3397 gotten
= target_get_raw_trace_data (buf
, offset
,
3400 error (_("Failure to get requested trace buffer data"));
3401 /* No more data is forthcoming, we're done. */
3405 writer
->ops
->write_trace_buffer (writer
, buf
, gotten
);
3413 /* Parse the trace buffers according to how data are stored
3414 in trace buffer in GDBserver. */
3416 gotten
= target_get_raw_trace_data (buf
, offset
, 6);
3421 /* Read the first six bytes in, which is the tracepoint
3422 number and trace frame size. */
3424 extract_unsigned_integer (&buf
[0], 2, byte_order
);
3426 tf_size
= (uint32_t)
3427 extract_unsigned_integer (&buf
[2], 4, byte_order
);
3429 writer
->ops
->frame_ops
->start (writer
, tp_num
);
3438 for (block
= 0; block
< tf_size
; )
3440 gdb_byte block_type
;
3442 /* We'll fetch one block each time, in order to
3443 handle the extremely large 'M' block. We first
3444 fetch one byte to get the type of the block. */
3445 gotten
= target_get_raw_trace_data (buf
, offset
, 1);
3447 error (_("Failure to get requested trace buffer data"));
3453 block_type
= buf
[0];
3458 = target_get_raw_trace_data (buf
, offset
,
3459 trace_regblock_size
);
3460 if (gotten
< trace_regblock_size
)
3461 error (_("Failure to get requested trace"
3464 TRACE_WRITE_R_BLOCK (writer
, buf
,
3465 trace_regblock_size
);
3469 unsigned short mlen
;
3474 t
= target_get_raw_trace_data (buf
,offset
, 10);
3476 error (_("Failure to get requested trace"
3484 extract_unsigned_integer (buf
, 8,
3486 mlen
= (unsigned short)
3487 extract_unsigned_integer (&buf
[8], 2,
3490 TRACE_WRITE_M_BLOCK_HEADER (writer
, addr
,
3493 /* The memory contents in 'M' block may be
3494 very large. Fetch the data from the target
3495 and write them into file one by one. */
3496 for (j
= 0; j
< mlen
; )
3498 unsigned int read_length
;
3500 if (mlen
- j
> MAX_TRACE_UPLOAD
)
3501 read_length
= MAX_TRACE_UPLOAD
;
3503 read_length
= mlen
- j
;
3505 t
= target_get_raw_trace_data (buf
,
3508 if (t
< read_length
)
3509 error (_("Failure to get requested"
3510 " trace buffer data"));
3512 TRACE_WRITE_M_BLOCK_MEMORY (writer
, buf
,
3516 gotten
+= read_length
;
3527 = target_get_raw_trace_data (buf
, offset
,
3530 error (_("Failure to get requested"
3531 " trace buffer data"));
3533 vnum
= (int) extract_signed_integer (buf
,
3537 = extract_signed_integer (&buf
[4], 8,
3540 TRACE_WRITE_V_BLOCK (writer
, vnum
, val
);
3544 error (_("Unknown block type '%c' (0x%x) in"
3546 block_type
, block_type
);
3556 writer
->ops
->frame_ops
->end (writer
);
3560 writer
->ops
->end (writer
);
3563 /* Return a trace writer for TFILE format. */
3565 static struct trace_file_writer
*
3566 tfile_trace_file_writer_new (void)
3568 struct tfile_trace_file_writer
*writer
3569 = xmalloc (sizeof (struct tfile_trace_file_writer
));
3571 writer
->base
.ops
= &tfile_write_ops
;
3573 writer
->pathname
= NULL
;
3575 return (struct trace_file_writer
*) writer
;
3579 trace_save_command (char *args
, int from_tty
)
3581 int target_does_save
= 0;
3583 char *filename
= NULL
;
3584 struct cleanup
*back_to
;
3585 int generate_ctf
= 0;
3586 struct trace_file_writer
*writer
= NULL
;
3589 error_no_arg (_("file in which to save trace data"));
3591 argv
= gdb_buildargv (args
);
3592 back_to
= make_cleanup_freeargv (argv
);
3594 for (; *argv
; ++argv
)
3596 if (strcmp (*argv
, "-r") == 0)
3597 target_does_save
= 1;
3598 if (strcmp (*argv
, "-ctf") == 0)
3600 else if (**argv
== '-')
3601 error (_("unknown option `%s'"), *argv
);
3607 error_no_arg (_("file in which to save trace data"));
3610 writer
= ctf_trace_file_writer_new ();
3612 writer
= tfile_trace_file_writer_new ();
3614 make_cleanup (trace_file_writer_xfree
, writer
);
3616 trace_save (filename
, writer
, target_does_save
);
3619 printf_filtered (_("Trace data saved to %s '%s'.\n"),
3620 generate_ctf
? "directory" : "file", filename
);
3622 do_cleanups (back_to
);
3625 /* Save the trace data to file FILENAME of tfile format. */
3628 trace_save_tfile (const char *filename
, int target_does_save
)
3630 struct trace_file_writer
*writer
;
3631 struct cleanup
*back_to
;
3633 writer
= tfile_trace_file_writer_new ();
3634 back_to
= make_cleanup (trace_file_writer_xfree
, writer
);
3635 trace_save (filename
, writer
, target_does_save
);
3636 do_cleanups (back_to
);
3639 /* Save the trace data to dir DIRNAME of ctf format. */
3642 trace_save_ctf (const char *dirname
, int target_does_save
)
3644 struct trace_file_writer
*writer
;
3645 struct cleanup
*back_to
;
3647 writer
= ctf_trace_file_writer_new ();
3648 back_to
= make_cleanup (trace_file_writer_xfree
, writer
);
3650 trace_save (dirname
, writer
, target_does_save
);
3651 do_cleanups (back_to
);
3654 /* Tell the target what to do with an ongoing tracing run if GDB
3655 disconnects for some reason. */
3658 set_disconnected_tracing (char *args
, int from_tty
,
3659 struct cmd_list_element
*c
)
3661 target_set_disconnected_tracing (disconnected_tracing
);
3665 set_circular_trace_buffer (char *args
, int from_tty
,
3666 struct cmd_list_element
*c
)
3668 target_set_circular_trace_buffer (circular_trace_buffer
);
3672 set_trace_buffer_size (char *args
, int from_tty
,
3673 struct cmd_list_element
*c
)
3675 target_set_trace_buffer_size (trace_buffer_size
);
3679 set_trace_user (char *args
, int from_tty
,
3680 struct cmd_list_element
*c
)
3684 ret
= target_set_trace_notes (trace_user
, NULL
, NULL
);
3687 warning (_("Target does not support trace notes, user ignored"));
3691 set_trace_notes (char *args
, int from_tty
,
3692 struct cmd_list_element
*c
)
3696 ret
= target_set_trace_notes (NULL
, trace_notes
, NULL
);
3699 warning (_("Target does not support trace notes, note ignored"));
3703 set_trace_stop_notes (char *args
, int from_tty
,
3704 struct cmd_list_element
*c
)
3708 ret
= target_set_trace_notes (NULL
, NULL
, trace_stop_notes
);
3711 warning (_("Target does not support trace notes, stop note ignored"));
3714 /* Convert the memory pointed to by mem into hex, placing result in buf.
3715 * Return a pointer to the last char put in buf (null)
3716 * "stolen" from sparc-stub.c
3719 static const char hexchars
[] = "0123456789abcdef";
3722 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
3730 *buf
++ = hexchars
[ch
>> 4];
3731 *buf
++ = hexchars
[ch
& 0xf];
3740 get_traceframe_number (void)
3742 return traceframe_number
;
3746 get_tracepoint_number (void)
3748 return tracepoint_number
;
3751 /* Make the traceframe NUM be the current trace frame. Does nothing
3752 if NUM is already current. */
3755 set_current_traceframe (int num
)
3759 if (traceframe_number
== num
)
3761 /* Nothing to do. */
3765 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
3768 warning (_("could not change traceframe"));
3770 set_traceframe_num (newnum
);
3772 /* Changing the traceframe changes our view of registers and of the
3774 registers_changed ();
3776 clear_traceframe_info ();
3779 /* Make the traceframe NUM be the current trace frame, and do nothing
3783 set_traceframe_number (int num
)
3785 traceframe_number
= num
;
3788 /* A cleanup used when switching away and back from tfind mode. */
3790 struct current_traceframe_cleanup
3792 /* The traceframe we were inspecting. */
3793 int traceframe_number
;
3797 do_restore_current_traceframe_cleanup (void *arg
)
3799 struct current_traceframe_cleanup
*old
= arg
;
3801 set_current_traceframe (old
->traceframe_number
);
3805 restore_current_traceframe_cleanup_dtor (void *arg
)
3807 struct current_traceframe_cleanup
*old
= arg
;
3813 make_cleanup_restore_current_traceframe (void)
3815 struct current_traceframe_cleanup
*old
;
3817 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
3818 old
->traceframe_number
= traceframe_number
;
3820 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
3821 restore_current_traceframe_cleanup_dtor
);
3825 make_cleanup_restore_traceframe_number (void)
3827 return make_cleanup_restore_integer (&traceframe_number
);
3830 /* Given a number and address, return an uploaded tracepoint with that
3831 number, creating if necessary. */
3833 struct uploaded_tp
*
3834 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
3836 struct uploaded_tp
*utp
;
3838 for (utp
= *utpp
; utp
; utp
= utp
->next
)
3839 if (utp
->number
== num
&& utp
->addr
== addr
)
3841 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
3842 memset (utp
, 0, sizeof (struct uploaded_tp
));
3845 utp
->actions
= NULL
;
3846 utp
->step_actions
= NULL
;
3847 utp
->cmd_strings
= NULL
;
3854 free_uploaded_tps (struct uploaded_tp
**utpp
)
3856 struct uploaded_tp
*next_one
;
3860 next_one
= (*utpp
)->next
;
3866 /* Given a number and address, return an uploaded tracepoint with that
3867 number, creating if necessary. */
3869 struct uploaded_tsv
*
3870 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
3872 struct uploaded_tsv
*utsv
;
3874 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
3875 if (utsv
->number
== num
)
3877 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
3878 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
3880 utsv
->next
= *utsvp
;
3886 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
3888 struct uploaded_tsv
*next_one
;
3892 next_one
= (*utsvp
)->next
;
3898 /* FIXME this function is heuristic and will miss the cases where the
3899 conditional is semantically identical but differs in whitespace,
3900 such as "x == 0" vs "x==0". */
3903 cond_string_is_same (char *str1
, char *str2
)
3905 if (str1
== NULL
|| str2
== NULL
)
3906 return (str1
== str2
);
3908 return (strcmp (str1
, str2
) == 0);
3911 /* Look for an existing tracepoint that seems similar enough to the
3912 uploaded one. Enablement isn't compared, because the user can
3913 toggle that freely, and may have done so in anticipation of the
3914 next trace run. Return the location of matched tracepoint. */
3916 static struct bp_location
*
3917 find_matching_tracepoint_location (struct uploaded_tp
*utp
)
3919 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
3921 struct breakpoint
*b
;
3922 struct bp_location
*loc
;
3924 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
3926 struct tracepoint
*t
= (struct tracepoint
*) b
;
3928 if (b
->type
== utp
->type
3929 && t
->step_count
== utp
->step
3930 && t
->pass_count
== utp
->pass
3931 && cond_string_is_same (t
->base
.cond_string
, utp
->cond_string
)
3932 /* FIXME also test actions. */
3935 /* Scan the locations for an address match. */
3936 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
3938 if (loc
->address
== utp
->addr
)
3946 /* Given a list of tracepoints uploaded from a target, attempt to
3947 match them up with existing tracepoints, and create new ones if not
3951 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
3953 struct uploaded_tp
*utp
;
3954 /* A set of tracepoints which are modified. */
3955 VEC(breakpoint_p
) *modified_tp
= NULL
;
3957 struct breakpoint
*b
;
3959 /* Look for GDB tracepoints that match up with our uploaded versions. */
3960 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
3962 struct bp_location
*loc
;
3963 struct tracepoint
*t
;
3965 loc
= find_matching_tracepoint_location (utp
);
3970 /* Mark this location as already inserted. */
3972 t
= (struct tracepoint
*) loc
->owner
;
3973 printf_filtered (_("Assuming tracepoint %d is same "
3974 "as target's tracepoint %d at %s.\n"),
3975 loc
->owner
->number
, utp
->number
,
3976 paddress (loc
->gdbarch
, utp
->addr
));
3978 /* The tracepoint LOC->owner was modified (the location LOC
3979 was marked as inserted in the target). Save it in
3980 MODIFIED_TP if not there yet. The 'breakpoint-modified'
3981 observers will be notified later once for each tracepoint
3982 saved in MODIFIED_TP. */
3984 VEC_iterate (breakpoint_p
, modified_tp
, ix
, b
);
3986 if (b
== loc
->owner
)
3992 VEC_safe_push (breakpoint_p
, modified_tp
, loc
->owner
);
3996 t
= create_tracepoint_from_upload (utp
);
3998 printf_filtered (_("Created tracepoint %d for "
3999 "target's tracepoint %d at %s.\n"),
4000 t
->base
.number
, utp
->number
,
4001 paddress (get_current_arch (), utp
->addr
));
4003 printf_filtered (_("Failed to create tracepoint for target's "
4004 "tracepoint %d at %s, skipping it.\n"),
4006 paddress (get_current_arch (), utp
->addr
));
4008 /* Whether found or created, record the number used by the
4009 target, to help with mapping target tracepoints back to their
4010 counterparts here. */
4012 t
->number_on_target
= utp
->number
;
4015 /* Notify 'breakpoint-modified' observer that at least one of B's
4016 locations was changed. */
4017 for (ix
= 0; VEC_iterate (breakpoint_p
, modified_tp
, ix
, b
); ix
++)
4018 observer_notify_breakpoint_modified (b
);
4020 VEC_free (breakpoint_p
, modified_tp
);
4021 free_uploaded_tps (uploaded_tps
);
4024 /* Trace state variables don't have much to identify them beyond their
4025 name, so just use that to detect matches. */
4027 static struct trace_state_variable
*
4028 find_matching_tsv (struct uploaded_tsv
*utsv
)
4033 return find_trace_state_variable (utsv
->name
);
4036 static struct trace_state_variable
*
4037 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
4039 const char *namebase
;
4042 struct trace_state_variable
*tsv
;
4043 struct cleanup
*old_chain
;
4047 namebase
= utsv
->name
;
4048 buf
= xstrprintf ("%s", namebase
);
4053 buf
= xstrprintf ("%s_%d", namebase
, try_num
++);
4056 /* Fish for a name that is not in use. */
4057 /* (should check against all internal vars?) */
4058 while (find_trace_state_variable (buf
))
4061 buf
= xstrprintf ("%s_%d", namebase
, try_num
++);
4064 old_chain
= make_cleanup (xfree
, buf
);
4066 /* We have an available name, create the variable. */
4067 tsv
= create_trace_state_variable (buf
);
4068 tsv
->initial_value
= utsv
->initial_value
;
4069 tsv
->builtin
= utsv
->builtin
;
4071 observer_notify_tsv_created (tsv
);
4073 do_cleanups (old_chain
);
4078 /* Given a list of uploaded trace state variables, try to match them
4079 up with existing variables, or create additional ones. */
4082 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
4085 struct uploaded_tsv
*utsv
;
4086 struct trace_state_variable
*tsv
;
4089 /* Most likely some numbers will have to be reassigned as part of
4090 the merge, so clear them all in anticipation. */
4091 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
4094 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
4096 tsv
= find_matching_tsv (utsv
);
4100 printf_filtered (_("Assuming trace state variable $%s "
4101 "is same as target's variable %d.\n"),
4102 tsv
->name
, utsv
->number
);
4106 tsv
= create_tsv_from_upload (utsv
);
4108 printf_filtered (_("Created trace state variable "
4109 "$%s for target's variable %d.\n"),
4110 tsv
->name
, utsv
->number
);
4112 /* Give precedence to numberings that come from the target. */
4114 tsv
->number
= utsv
->number
;
4117 /* Renumber everything that didn't get a target-assigned number. */
4119 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
4120 if (tsv
->number
> highest
)
4121 highest
= tsv
->number
;
4124 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
4125 if (tsv
->number
== 0)
4126 tsv
->number
= highest
++;
4128 free_uploaded_tsvs (uploaded_tsvs
);
4131 /* target tfile command */
4133 static struct target_ops tfile_ops
;
4135 /* Fill in tfile_ops with its defined operations and properties. */
4137 #define TRACE_HEADER_SIZE 8
4139 static char *trace_filename
;
4140 static int trace_fd
= -1;
4141 static off_t trace_frames_offset
;
4142 static off_t cur_offset
;
4143 static int cur_data_size
;
4144 int trace_regblock_size
;
4146 static void tfile_interp_line (char *line
,
4147 struct uploaded_tp
**utpp
,
4148 struct uploaded_tsv
**utsvp
);
4150 /* Read SIZE bytes into READBUF from the trace frame, starting at
4151 TRACE_FD's current position. Note that this call `read'
4152 underneath, hence it advances the file's seek position. Throws an
4153 error if the `read' syscall fails, or less than SIZE bytes are
4157 tfile_read (gdb_byte
*readbuf
, int size
)
4161 gotten
= read (trace_fd
, readbuf
, size
);
4163 perror_with_name (trace_filename
);
4164 else if (gotten
< size
)
4165 error (_("Premature end of file while reading trace file"));
4169 tfile_open (char *filename
, int from_tty
)
4171 volatile struct gdb_exception ex
;
4173 struct cleanup
*old_chain
;
4176 char header
[TRACE_HEADER_SIZE
];
4177 char linebuf
[1000]; /* Should be max remote packet size or so. */
4180 struct trace_status
*ts
;
4181 struct uploaded_tp
*uploaded_tps
= NULL
;
4182 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4184 target_preopen (from_tty
);
4186 error (_("No trace file specified."));
4188 filename
= tilde_expand (filename
);
4189 if (!IS_ABSOLUTE_PATH(filename
))
4191 temp
= concat (current_directory
, "/", filename
, (char *) NULL
);
4196 old_chain
= make_cleanup (xfree
, filename
);
4198 flags
= O_BINARY
| O_LARGEFILE
;
4200 scratch_chan
= open (filename
, flags
, 0);
4201 if (scratch_chan
< 0)
4202 perror_with_name (filename
);
4204 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
4206 discard_cleanups (old_chain
); /* Don't free filename any more. */
4207 unpush_target (&tfile_ops
);
4209 trace_filename
= xstrdup (filename
);
4210 trace_fd
= scratch_chan
;
4213 /* Read the file header and test for validity. */
4214 tfile_read ((gdb_byte
*) &header
, TRACE_HEADER_SIZE
);
4216 bytes
+= TRACE_HEADER_SIZE
;
4217 if (!(header
[0] == 0x7f
4218 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
4219 error (_("File is not a valid trace file."));
4221 push_target (&tfile_ops
);
4223 trace_regblock_size
= 0;
4224 ts
= current_trace_status ();
4225 /* We know we're working with a file. Record its name. */
4226 ts
->filename
= trace_filename
;
4227 /* Set defaults in case there is no status line. */
4228 ts
->running_known
= 0;
4229 ts
->stop_reason
= trace_stop_reason_unknown
;
4230 ts
->traceframe_count
= -1;
4231 ts
->buffer_free
= 0;
4232 ts
->disconnected_tracing
= 0;
4233 ts
->circular_buffer
= 0;
4235 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4237 /* Read through a section of newline-terminated lines that
4238 define things like tracepoints. */
4242 tfile_read (&byte
, 1);
4247 /* Empty line marks end of the definition section. */
4252 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
4255 linebuf
[i
++] = byte
;
4257 error (_("Excessively long lines in trace file"));
4260 /* Record the starting offset of the binary trace data. */
4261 trace_frames_offset
= bytes
;
4263 /* If we don't have a blocksize, we can't interpret the
4265 if (trace_regblock_size
== 0)
4266 error (_("No register block size recorded in trace file"));
4270 /* Pop the partially set up target. */
4272 throw_exception (ex
);
4275 inferior_appeared (current_inferior (), TFILE_PID
);
4276 inferior_ptid
= pid_to_ptid (TFILE_PID
);
4277 add_thread_silent (inferior_ptid
);
4279 if (ts
->traceframe_count
<= 0)
4280 warning (_("No traceframes present in this file."));
4282 /* Add the file's tracepoints and variables into the current mix. */
4284 /* Get trace state variables first, they may be checked when parsing
4285 uploaded commands. */
4286 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4288 merge_uploaded_tracepoints (&uploaded_tps
);
4290 post_create_inferior (&tfile_ops
, from_tty
);
4293 /* Interpret the given line from the definitions part of the trace
4297 tfile_interp_line (char *line
, struct uploaded_tp
**utpp
,
4298 struct uploaded_tsv
**utsvp
)
4302 if (strncmp (p
, "R ", strlen ("R ")) == 0)
4305 trace_regblock_size
= strtol (p
, &p
, 16);
4307 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
4309 p
+= strlen ("status ");
4310 parse_trace_status (p
, current_trace_status ());
4312 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
4314 p
+= strlen ("tp ");
4315 parse_tracepoint_definition (p
, utpp
);
4317 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
4319 p
+= strlen ("tsv ");
4320 parse_tsv_definition (p
, utsvp
);
4323 warning (_("Ignoring trace file definition \"%s\""), line
);
4326 /* Parse the part of trace status syntax that is shared between
4327 the remote protocol and the trace file reader. */
4330 parse_trace_status (char *line
, struct trace_status
*ts
)
4332 char *p
= line
, *p1
, *p2
, *p3
, *p_temp
;
4336 ts
->running_known
= 1;
4337 ts
->running
= (*p
++ == '1');
4338 ts
->stop_reason
= trace_stop_reason_unknown
;
4339 xfree (ts
->stop_desc
);
4340 ts
->stop_desc
= NULL
;
4341 ts
->traceframe_count
= -1;
4342 ts
->traceframes_created
= -1;
4343 ts
->buffer_free
= -1;
4344 ts
->buffer_size
= -1;
4345 ts
->disconnected_tracing
= 0;
4346 ts
->circular_buffer
= 0;
4347 xfree (ts
->user_name
);
4348 ts
->user_name
= NULL
;
4351 ts
->start_time
= ts
->stop_time
= 0;
4355 p1
= strchr (p
, ':');
4357 error (_("Malformed trace status, at %s\n\
4358 Status line: '%s'\n"), p
, line
);
4359 p3
= strchr (p
, ';');
4361 p3
= p
+ strlen (p
);
4362 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
4364 p
= unpack_varlen_hex (++p1
, &val
);
4365 ts
->stop_reason
= trace_buffer_full
;
4367 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
4369 p
= unpack_varlen_hex (++p1
, &val
);
4370 ts
->stop_reason
= trace_never_run
;
4372 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
],
4375 p
= unpack_varlen_hex (++p1
, &val
);
4376 ts
->stop_reason
= tracepoint_passcount
;
4377 ts
->stopping_tracepoint
= val
;
4379 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
4381 p2
= strchr (++p1
, ':');
4389 ts
->stop_desc
= xmalloc (strlen (line
));
4390 end
= hex2bin (p1
, ts
->stop_desc
, (p2
- p1
) / 2);
4391 ts
->stop_desc
[end
] = '\0';
4394 ts
->stop_desc
= xstrdup ("");
4396 p
= unpack_varlen_hex (++p2
, &val
);
4397 ts
->stop_reason
= tstop_command
;
4399 else if (strncmp (p
, stop_reason_names
[trace_disconnected
], p1
- p
) == 0)
4401 p
= unpack_varlen_hex (++p1
, &val
);
4402 ts
->stop_reason
= trace_disconnected
;
4404 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
4406 p2
= strchr (++p1
, ':');
4409 ts
->stop_desc
= xmalloc ((p2
- p1
) / 2 + 1);
4410 end
= hex2bin (p1
, ts
->stop_desc
, (p2
- p1
) / 2);
4411 ts
->stop_desc
[end
] = '\0';
4414 ts
->stop_desc
= xstrdup ("");
4416 p
= unpack_varlen_hex (++p2
, &val
);
4417 ts
->stopping_tracepoint
= val
;
4418 ts
->stop_reason
= tracepoint_error
;
4420 else if (strncmp (p
, "tframes", p1
- p
) == 0)
4422 p
= unpack_varlen_hex (++p1
, &val
);
4423 ts
->traceframe_count
= val
;
4425 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
4427 p
= unpack_varlen_hex (++p1
, &val
);
4428 ts
->traceframes_created
= val
;
4430 else if (strncmp (p
, "tfree", p1
- p
) == 0)
4432 p
= unpack_varlen_hex (++p1
, &val
);
4433 ts
->buffer_free
= val
;
4435 else if (strncmp (p
, "tsize", p1
- p
) == 0)
4437 p
= unpack_varlen_hex (++p1
, &val
);
4438 ts
->buffer_size
= val
;
4440 else if (strncmp (p
, "disconn", p1
- p
) == 0)
4442 p
= unpack_varlen_hex (++p1
, &val
);
4443 ts
->disconnected_tracing
= val
;
4445 else if (strncmp (p
, "circular", p1
- p
) == 0)
4447 p
= unpack_varlen_hex (++p1
, &val
);
4448 ts
->circular_buffer
= val
;
4450 else if (strncmp (p
, "starttime", p1
- p
) == 0)
4452 p
= unpack_varlen_hex (++p1
, &val
);
4453 ts
->start_time
= val
;
4455 else if (strncmp (p
, "stoptime", p1
- p
) == 0)
4457 p
= unpack_varlen_hex (++p1
, &val
);
4458 ts
->stop_time
= val
;
4460 else if (strncmp (p
, "username", p1
- p
) == 0)
4463 ts
->user_name
= xmalloc (strlen (p
) / 2);
4464 end
= hex2bin (p1
, ts
->user_name
, (p3
- p1
) / 2);
4465 ts
->user_name
[end
] = '\0';
4468 else if (strncmp (p
, "notes", p1
- p
) == 0)
4471 ts
->notes
= xmalloc (strlen (p
) / 2);
4472 end
= hex2bin (p1
, ts
->notes
, (p3
- p1
) / 2);
4473 ts
->notes
[end
] = '\0';
4478 /* Silently skip unknown optional info. */
4479 p_temp
= strchr (p1
+ 1, ';');
4483 /* Must be at the end. */
4490 parse_tracepoint_status (char *p
, struct breakpoint
*bp
,
4491 struct uploaded_tp
*utp
)
4494 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
4496 p
= unpack_varlen_hex (p
, &uval
);
4498 tp
->base
.hit_count
+= uval
;
4500 utp
->hit_count
+= uval
;
4501 p
= unpack_varlen_hex (p
+ 1, &uval
);
4503 tp
->traceframe_usage
+= uval
;
4505 utp
->traceframe_usage
+= uval
;
4506 /* Ignore any extra, allowing for future extensions. */
4509 /* Given a line of text defining a part of a tracepoint, parse it into
4510 an "uploaded tracepoint". */
4513 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
4517 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
, start
;
4520 char *cond
, *srctype
, *buf
;
4521 struct uploaded_tp
*utp
= NULL
;
4524 /* Both tracepoint and action definitions start with the same number
4525 and address sequence. */
4527 p
= unpack_varlen_hex (p
, &num
);
4528 p
++; /* skip a colon */
4529 p
= unpack_varlen_hex (p
, &addr
);
4530 p
++; /* skip a colon */
4533 enabled
= (*p
++ == 'E');
4534 p
++; /* skip a colon */
4535 p
= unpack_varlen_hex (p
, &step
);
4536 p
++; /* skip a colon */
4537 p
= unpack_varlen_hex (p
, &pass
);
4538 type
= bp_tracepoint
;
4540 /* Thumb through optional fields. */
4543 p
++; /* skip a colon */
4546 type
= bp_fast_tracepoint
;
4548 p
= unpack_varlen_hex (p
, &orig_size
);
4552 type
= bp_static_tracepoint
;
4558 p
= unpack_varlen_hex (p
, &xlen
);
4559 p
++; /* skip a comma */
4560 cond
= (char *) xmalloc (2 * xlen
+ 1);
4561 strncpy (cond
, p
, 2 * xlen
);
4562 cond
[2 * xlen
] = '\0';
4566 warning (_("Unrecognized char '%c' in tracepoint "
4567 "definition, skipping rest"), *p
);
4569 utp
= get_uploaded_tp (num
, addr
, utpp
);
4571 utp
->enabled
= enabled
;
4576 else if (piece
== 'A')
4578 utp
= get_uploaded_tp (num
, addr
, utpp
);
4579 VEC_safe_push (char_ptr
, utp
->actions
, xstrdup (p
));
4581 else if (piece
== 'S')
4583 utp
= get_uploaded_tp (num
, addr
, utpp
);
4584 VEC_safe_push (char_ptr
, utp
->step_actions
, xstrdup (p
));
4586 else if (piece
== 'Z')
4588 /* Parse a chunk of source form definition. */
4589 utp
= get_uploaded_tp (num
, addr
, utpp
);
4591 p
= strchr (p
, ':');
4592 p
++; /* skip a colon */
4593 p
= unpack_varlen_hex (p
, &start
);
4594 p
++; /* skip a colon */
4595 p
= unpack_varlen_hex (p
, &xlen
);
4596 p
++; /* skip a colon */
4598 buf
= alloca (strlen (line
));
4600 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
4603 if (strncmp (srctype
, "at:", strlen ("at:")) == 0)
4604 utp
->at_string
= xstrdup (buf
);
4605 else if (strncmp (srctype
, "cond:", strlen ("cond:")) == 0)
4606 utp
->cond_string
= xstrdup (buf
);
4607 else if (strncmp (srctype
, "cmd:", strlen ("cmd:")) == 0)
4608 VEC_safe_push (char_ptr
, utp
->cmd_strings
, xstrdup (buf
));
4610 else if (piece
== 'V')
4612 utp
= get_uploaded_tp (num
, addr
, utpp
);
4614 parse_tracepoint_status (p
, NULL
, utp
);
4618 /* Don't error out, the target might be sending us optional
4619 info that we don't care about. */
4620 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece
);
4624 /* Convert a textual description of a trace state variable into an
4628 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
4631 ULONGEST num
, initval
, builtin
;
4633 struct uploaded_tsv
*utsv
= NULL
;
4635 buf
= alloca (strlen (line
));
4638 p
= unpack_varlen_hex (p
, &num
);
4639 p
++; /* skip a colon */
4640 p
= unpack_varlen_hex (p
, &initval
);
4641 p
++; /* skip a colon */
4642 p
= unpack_varlen_hex (p
, &builtin
);
4643 p
++; /* skip a colon */
4644 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
4647 utsv
= get_uploaded_tsv (num
, utsvp
);
4648 utsv
->initial_value
= initval
;
4649 utsv
->builtin
= builtin
;
4650 utsv
->name
= xstrdup (buf
);
4653 /* Close the trace file and generally clean up. */
4663 pid
= ptid_get_pid (inferior_ptid
);
4664 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff. */
4665 exit_inferior_silent (pid
);
4669 xfree (trace_filename
);
4670 trace_filename
= NULL
;
4674 tfile_files_info (struct target_ops
*t
)
4676 printf_filtered ("\t`%s'\n", trace_filename
);
4679 /* The trace status for a file is that tracing can never be run. */
4682 tfile_get_trace_status (struct trace_status
*ts
)
4684 /* Other bits of trace status were collected as part of opening the
4685 trace files, so nothing to do here. */
4691 tfile_get_tracepoint_status (struct breakpoint
*tp
, struct uploaded_tp
*utp
)
4693 /* Other bits of trace status were collected as part of opening the
4694 trace files, so nothing to do here. */
4697 /* Given the position of a traceframe in the file, figure out what
4698 address the frame was collected at. This would normally be the
4699 value of a collected PC register, but if not available, we
4703 tfile_get_traceframe_address (off_t tframe_offset
)
4707 struct tracepoint
*tp
;
4708 off_t saved_offset
= cur_offset
;
4710 /* FIXME dig pc out of collected registers. */
4712 /* Fall back to using tracepoint address. */
4713 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
4714 tfile_read ((gdb_byte
*) &tpnum
, 2);
4715 tpnum
= (short) extract_signed_integer ((gdb_byte
*) &tpnum
, 2,
4717 (target_gdbarch ()));
4719 tp
= get_tracepoint_by_number_on_target (tpnum
);
4720 /* FIXME this is a poor heuristic if multiple locations. */
4721 if (tp
&& tp
->base
.loc
)
4722 addr
= tp
->base
.loc
->address
;
4724 /* Restore our seek position. */
4725 cur_offset
= saved_offset
;
4726 lseek (trace_fd
, cur_offset
, SEEK_SET
);
4730 /* Given a type of search and some parameters, scan the collection of
4731 traceframes in the file looking for a match. When found, return
4732 both the traceframe and tracepoint number, otherwise -1 for
4736 tfile_trace_find (enum trace_find_type type
, int num
,
4737 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
4740 int tfnum
= 0, found
= 0;
4741 unsigned int data_size
;
4742 struct tracepoint
*tp
;
4743 off_t offset
, tframe_offset
;
4753 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
4754 offset
= trace_frames_offset
;
4757 tframe_offset
= offset
;
4758 tfile_read ((gdb_byte
*) &tpnum
, 2);
4759 tpnum
= (short) extract_signed_integer ((gdb_byte
*) &tpnum
, 2,
4761 (target_gdbarch ()));
4765 tfile_read ((gdb_byte
*) &data_size
, 4);
4766 data_size
= (unsigned int) extract_unsigned_integer
4767 ((gdb_byte
*) &data_size
, 4,
4768 gdbarch_byte_order (target_gdbarch ()));
4771 if (type
== tfind_number
)
4773 /* Looking for a specific trace frame. */
4779 /* Start from the _next_ trace frame. */
4780 if (tfnum
> traceframe_number
)
4785 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4786 if (tfaddr
== addr1
)
4790 tp
= get_tracepoint (num
);
4791 if (tp
&& tpnum
== tp
->number_on_target
)
4795 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4796 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
4800 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4801 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
4805 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
4814 cur_offset
= offset
;
4815 cur_data_size
= data_size
;
4819 /* Skip past the traceframe's data. */
4820 lseek (trace_fd
, data_size
, SEEK_CUR
);
4821 offset
+= data_size
;
4822 /* Update our own count of traceframes. */
4825 /* Did not find what we were looking for. */
4831 /* Prototype of the callback passed to tframe_walk_blocks. */
4832 typedef int (*walk_blocks_callback_func
) (char blocktype
, void *data
);
4834 /* Callback for traceframe_walk_blocks, used to find a given block
4835 type in a traceframe. */
4838 match_blocktype (char blocktype
, void *data
)
4840 char *wantedp
= data
;
4842 if (*wantedp
== blocktype
)
4848 /* Walk over all traceframe block starting at POS offset from
4849 CUR_OFFSET, and call CALLBACK for each block found, passing in DATA
4850 unmodified. If CALLBACK returns true, this returns the position in
4851 the traceframe where the block is found, relative to the start of
4852 the traceframe (cur_offset). Returns -1 if no callback call
4853 returned true, indicating that all blocks have been walked. */
4856 traceframe_walk_blocks (walk_blocks_callback_func callback
,
4857 int pos
, void *data
)
4859 /* Iterate through a traceframe's blocks, looking for a block of the
4862 lseek (trace_fd
, cur_offset
+ pos
, SEEK_SET
);
4863 while (pos
< cur_data_size
)
4865 unsigned short mlen
;
4868 tfile_read (&block_type
, 1);
4872 if ((*callback
) (block_type
, data
))
4878 lseek (trace_fd
, cur_offset
+ pos
+ trace_regblock_size
, SEEK_SET
);
4879 pos
+= trace_regblock_size
;
4882 lseek (trace_fd
, cur_offset
+ pos
+ 8, SEEK_SET
);
4883 tfile_read ((gdb_byte
*) &mlen
, 2);
4884 mlen
= (unsigned short)
4885 extract_unsigned_integer ((gdb_byte
*) &mlen
, 2,
4887 (target_gdbarch ()));
4888 lseek (trace_fd
, mlen
, SEEK_CUR
);
4889 pos
+= (8 + 2 + mlen
);
4892 lseek (trace_fd
, cur_offset
+ pos
+ 4 + 8, SEEK_SET
);
4896 error (_("Unknown block type '%c' (0x%x) in trace frame"),
4897 block_type
, block_type
);
4905 /* Convenience wrapper around traceframe_walk_blocks. Looks for the
4906 position offset of a block of type TYPE_WANTED in the current trace
4907 frame, starting at POS. Returns -1 if no such block was found. */
4910 traceframe_find_block_type (char type_wanted
, int pos
)
4912 return traceframe_walk_blocks (match_blocktype
, pos
, &type_wanted
);
4915 /* Look for a block of saved registers in the traceframe, and get the
4916 requested register from it. */
4919 tfile_fetch_registers (struct target_ops
*ops
,
4920 struct regcache
*regcache
, int regno
)
4922 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
4923 int offset
, regn
, regsize
, pc_regno
;
4926 /* An uninitialized reg size says we're not going to be
4927 successful at getting register blocks. */
4928 if (!trace_regblock_size
)
4931 regs
= alloca (trace_regblock_size
);
4933 if (traceframe_find_block_type ('R', 0) >= 0)
4935 tfile_read (regs
, trace_regblock_size
);
4937 /* Assume the block is laid out in GDB register number order,
4938 each register with the size that it has in GDB. */
4940 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
4942 regsize
= register_size (gdbarch
, regn
);
4943 /* Make sure we stay within block bounds. */
4944 if (offset
+ regsize
>= trace_regblock_size
)
4946 if (regcache_register_status (regcache
, regn
) == REG_UNKNOWN
)
4950 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
4953 else if (regno
== -1)
4955 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
4963 /* We get here if no register data has been found. Mark registers
4965 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
4966 regcache_raw_supply (regcache
, regn
, NULL
);
4968 /* We can often usefully guess that the PC is going to be the same
4969 as the address of the tracepoint. */
4970 pc_regno
= gdbarch_pc_regnum (gdbarch
);
4971 if (pc_regno
>= 0 && (regno
== -1 || regno
== pc_regno
))
4973 struct tracepoint
*tp
= get_tracepoint (tracepoint_number
);
4975 if (tp
&& tp
->base
.loc
)
4977 /* But don't try to guess if tracepoint is multi-location... */
4978 if (tp
->base
.loc
->next
)
4980 warning (_("Tracepoint %d has multiple "
4981 "locations, cannot infer $pc"),
4985 /* ... or does while-stepping. */
4986 if (tp
->step_count
> 0)
4988 warning (_("Tracepoint %d does while-stepping, "
4989 "cannot infer $pc"),
4994 store_unsigned_integer (regs
, register_size (gdbarch
, pc_regno
),
4995 gdbarch_byte_order (gdbarch
),
4996 tp
->base
.loc
->address
);
4997 regcache_raw_supply (regcache
, pc_regno
, regs
);
5003 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
5004 const char *annex
, gdb_byte
*readbuf
,
5005 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
5007 /* We're only doing regular memory for now. */
5008 if (object
!= TARGET_OBJECT_MEMORY
)
5011 if (readbuf
== NULL
)
5012 error (_("tfile_xfer_partial: trace file is read-only"));
5014 if (traceframe_number
!= -1)
5018 /* Iterate through the traceframe's blocks, looking for
5020 while ((pos
= traceframe_find_block_type ('M', pos
)) >= 0)
5022 ULONGEST maddr
, amt
;
5023 unsigned short mlen
;
5024 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch ());
5026 tfile_read ((gdb_byte
*) &maddr
, 8);
5027 maddr
= extract_unsigned_integer ((gdb_byte
*) &maddr
, 8,
5029 tfile_read ((gdb_byte
*) &mlen
, 2);
5030 mlen
= (unsigned short)
5031 extract_unsigned_integer ((gdb_byte
*) &mlen
, 2, byte_order
);
5033 /* If the block includes the first part of the desired
5034 range, return as much it has; GDB will re-request the
5035 remainder, which might be in a different block of this
5037 if (maddr
<= offset
&& offset
< (maddr
+ mlen
))
5039 amt
= (maddr
+ mlen
) - offset
;
5043 if (maddr
!= offset
)
5044 lseek (trace_fd
, offset
- maddr
, SEEK_CUR
);
5045 tfile_read (readbuf
, amt
);
5049 /* Skip over this block. */
5050 pos
+= (8 + 2 + mlen
);
5054 /* It's unduly pedantic to refuse to look at the executable for
5055 read-only pieces; so do the equivalent of readonly regions aka
5057 /* FIXME account for relocation at some point. */
5064 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5066 if ((s
->flags
& SEC_LOAD
) == 0
5067 || (s
->flags
& SEC_READONLY
) == 0)
5071 size
= bfd_get_section_size (s
);
5072 if (vma
<= offset
&& offset
< (vma
+ size
))
5076 amt
= (vma
+ size
) - offset
;
5080 amt
= bfd_get_section_contents (exec_bfd
, s
,
5081 readbuf
, offset
- vma
, amt
);
5087 /* Indicate failure to find the requested memory block. */
5091 /* Iterate through the blocks of a trace frame, looking for a 'V'
5092 block with a matching tsv number. */
5095 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
5100 /* Iterate over blocks in current frame and find the last 'V'
5101 block in which tsv number is TSVNUM. In one trace frame, there
5102 may be multiple 'V' blocks created for a given trace variable,
5103 and the last matched 'V' block contains the updated value. */
5105 while ((pos
= traceframe_find_block_type ('V', pos
)) >= 0)
5109 tfile_read ((gdb_byte
*) &vnum
, 4);
5110 vnum
= (int) extract_signed_integer ((gdb_byte
*) &vnum
, 4,
5112 (target_gdbarch ()));
5115 tfile_read ((gdb_byte
*) val
, 8);
5116 *val
= extract_signed_integer ((gdb_byte
*) val
, 8,
5118 (target_gdbarch ()));
5128 tfile_has_all_memory (struct target_ops
*ops
)
5134 tfile_has_memory (struct target_ops
*ops
)
5140 tfile_has_stack (struct target_ops
*ops
)
5142 return traceframe_number
!= -1;
5146 tfile_has_registers (struct target_ops
*ops
)
5148 return traceframe_number
!= -1;
5152 tfile_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
5157 /* Callback for traceframe_walk_blocks. Builds a traceframe_info
5158 object for the tfile target's current traceframe. */
5161 build_traceframe_info (char blocktype
, void *data
)
5163 struct traceframe_info
*info
= data
;
5169 struct mem_range
*r
;
5171 unsigned short mlen
;
5173 tfile_read ((gdb_byte
*) &maddr
, 8);
5174 maddr
= extract_unsigned_integer ((gdb_byte
*) &maddr
, 8,
5176 (target_gdbarch ()));
5177 tfile_read ((gdb_byte
*) &mlen
, 2);
5178 mlen
= (unsigned short)
5179 extract_unsigned_integer ((gdb_byte
*) &mlen
,
5180 2, gdbarch_byte_order
5181 (target_gdbarch ()));
5183 r
= VEC_safe_push (mem_range_s
, info
->memory
, NULL
);
5196 warning (_("Unhandled trace block type (%d) '%c ' "
5197 "while building trace frame info."),
5198 blocktype
, blocktype
);
5205 static struct traceframe_info
*
5206 tfile_traceframe_info (void)
5208 struct traceframe_info
*info
= XCNEW (struct traceframe_info
);
5210 traceframe_walk_blocks (build_traceframe_info
, 0, info
);
5215 init_tfile_ops (void)
5217 tfile_ops
.to_shortname
= "tfile";
5218 tfile_ops
.to_longname
= "Local trace dump file";
5220 = "Use a trace file as a target. Specify the filename of the trace file.";
5221 tfile_ops
.to_open
= tfile_open
;
5222 tfile_ops
.to_close
= tfile_close
;
5223 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
5224 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
5225 tfile_ops
.to_files_info
= tfile_files_info
;
5226 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
5227 tfile_ops
.to_get_tracepoint_status
= tfile_get_tracepoint_status
;
5228 tfile_ops
.to_trace_find
= tfile_trace_find
;
5229 tfile_ops
.to_get_trace_state_variable_value
5230 = tfile_get_trace_state_variable_value
;
5231 tfile_ops
.to_stratum
= process_stratum
;
5232 tfile_ops
.to_has_all_memory
= tfile_has_all_memory
;
5233 tfile_ops
.to_has_memory
= tfile_has_memory
;
5234 tfile_ops
.to_has_stack
= tfile_has_stack
;
5235 tfile_ops
.to_has_registers
= tfile_has_registers
;
5236 tfile_ops
.to_traceframe_info
= tfile_traceframe_info
;
5237 tfile_ops
.to_thread_alive
= tfile_thread_alive
;
5238 tfile_ops
.to_magic
= OPS_MAGIC
;
5242 free_current_marker (void *arg
)
5244 struct static_tracepoint_marker
**marker_p
= arg
;
5246 if (*marker_p
!= NULL
)
5248 release_static_tracepoint_marker (*marker_p
);
5255 /* Given a line of text defining a static tracepoint marker, parse it
5256 into a "static tracepoint marker" object. Throws an error is
5257 parsing fails. If PP is non-null, it points to one past the end of
5258 the parsed marker definition. */
5261 parse_static_tracepoint_marker_definition (char *line
, char **pp
,
5262 struct static_tracepoint_marker
*marker
)
5269 p
= unpack_varlen_hex (p
, &addr
);
5270 p
++; /* skip a colon */
5272 marker
->gdbarch
= target_gdbarch ();
5273 marker
->address
= (CORE_ADDR
) addr
;
5275 endp
= strchr (p
, ':');
5277 error (_("bad marker definition: %s"), line
);
5279 marker
->str_id
= xmalloc (endp
- p
+ 1);
5280 end
= hex2bin (p
, (gdb_byte
*) marker
->str_id
, (endp
- p
+ 1) / 2);
5281 marker
->str_id
[end
] = '\0';
5284 p
++; /* skip a colon */
5286 marker
->extra
= xmalloc (strlen (p
) + 1);
5287 end
= hex2bin (p
, (gdb_byte
*) marker
->extra
, strlen (p
) / 2);
5288 marker
->extra
[end
] = '\0';
5294 /* Release a static tracepoint marker's contents. Note that the
5295 object itself isn't released here. There objects are usually on
5299 release_static_tracepoint_marker (struct static_tracepoint_marker
*marker
)
5301 xfree (marker
->str_id
);
5302 marker
->str_id
= NULL
;
5305 /* Print MARKER to gdb_stdout. */
5308 print_one_static_tracepoint_marker (int count
,
5309 struct static_tracepoint_marker
*marker
)
5311 struct command_line
*l
;
5314 char wrap_indent
[80];
5315 char extra_field_indent
[80];
5316 struct ui_out
*uiout
= current_uiout
;
5317 struct cleanup
*bkpt_chain
;
5318 VEC(breakpoint_p
) *tracepoints
;
5320 struct symtab_and_line sal
;
5324 sal
.pc
= marker
->address
;
5326 tracepoints
= static_tracepoints_here (marker
->address
);
5328 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "marker");
5330 /* A counter field to help readability. This is not a stable
5332 ui_out_field_int (uiout
, "count", count
);
5334 ui_out_field_string (uiout
, "marker-id", marker
->str_id
);
5336 ui_out_field_fmt (uiout
, "enabled", "%c",
5337 !VEC_empty (breakpoint_p
, tracepoints
) ? 'y' : 'n');
5338 ui_out_spaces (uiout
, 2);
5340 strcpy (wrap_indent
, " ");
5342 if (gdbarch_addr_bit (marker
->gdbarch
) <= 32)
5343 strcat (wrap_indent
, " ");
5345 strcat (wrap_indent
, " ");
5347 strcpy (extra_field_indent
, " ");
5349 ui_out_field_core_addr (uiout
, "addr", marker
->gdbarch
, marker
->address
);
5351 sal
= find_pc_line (marker
->address
, 0);
5352 sym
= find_pc_sect_function (marker
->address
, NULL
);
5355 ui_out_text (uiout
, "in ");
5356 ui_out_field_string (uiout
, "func",
5357 SYMBOL_PRINT_NAME (sym
));
5358 ui_out_wrap_hint (uiout
, wrap_indent
);
5359 ui_out_text (uiout
, " at ");
5362 ui_out_field_skip (uiout
, "func");
5364 if (sal
.symtab
!= NULL
)
5366 ui_out_field_string (uiout
, "file",
5367 symtab_to_filename_for_display (sal
.symtab
));
5368 ui_out_text (uiout
, ":");
5370 if (ui_out_is_mi_like_p (uiout
))
5372 const char *fullname
= symtab_to_fullname (sal
.symtab
);
5374 ui_out_field_string (uiout
, "fullname", fullname
);
5377 ui_out_field_skip (uiout
, "fullname");
5379 ui_out_field_int (uiout
, "line", sal
.line
);
5383 ui_out_field_skip (uiout
, "fullname");
5384 ui_out_field_skip (uiout
, "line");
5387 ui_out_text (uiout
, "\n");
5388 ui_out_text (uiout
, extra_field_indent
);
5389 ui_out_text (uiout
, _("Data: \""));
5390 ui_out_field_string (uiout
, "extra-data", marker
->extra
);
5391 ui_out_text (uiout
, "\"\n");
5393 if (!VEC_empty (breakpoint_p
, tracepoints
))
5395 struct cleanup
*cleanup_chain
;
5397 struct breakpoint
*b
;
5399 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
,
5402 ui_out_text (uiout
, extra_field_indent
);
5403 ui_out_text (uiout
, _("Probed by static tracepoints: "));
5404 for (ix
= 0; VEC_iterate(breakpoint_p
, tracepoints
, ix
, b
); ix
++)
5407 ui_out_text (uiout
, ", ");
5408 ui_out_text (uiout
, "#");
5409 ui_out_field_int (uiout
, "tracepoint-id", b
->number
);
5412 do_cleanups (cleanup_chain
);
5414 if (ui_out_is_mi_like_p (uiout
))
5415 ui_out_field_int (uiout
, "number-of-tracepoints",
5416 VEC_length(breakpoint_p
, tracepoints
));
5418 ui_out_text (uiout
, "\n");
5420 VEC_free (breakpoint_p
, tracepoints
);
5422 do_cleanups (bkpt_chain
);
5426 info_static_tracepoint_markers_command (char *arg
, int from_tty
)
5428 VEC(static_tracepoint_marker_p
) *markers
;
5429 struct cleanup
*old_chain
;
5430 struct static_tracepoint_marker
*marker
;
5431 struct ui_out
*uiout
= current_uiout
;
5434 /* We don't have to check target_can_use_agent and agent's capability on
5435 static tracepoint here, in order to be compatible with older GDBserver.
5436 We don't check USE_AGENT is true or not, because static tracepoints
5437 don't work without in-process agent, so we don't bother users to type
5438 `set agent on' when to use static tracepoint. */
5441 = make_cleanup_ui_out_table_begin_end (uiout
, 5, -1,
5442 "StaticTracepointMarkersTable");
5444 ui_out_table_header (uiout
, 7, ui_left
, "counter", "Cnt");
5446 ui_out_table_header (uiout
, 40, ui_left
, "marker-id", "ID");
5448 ui_out_table_header (uiout
, 3, ui_left
, "enabled", "Enb");
5449 if (gdbarch_addr_bit (target_gdbarch ()) <= 32)
5450 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");
5452 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");
5453 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What");
5455 ui_out_table_body (uiout
);
5457 markers
= target_static_tracepoint_markers_by_strid (NULL
);
5458 make_cleanup (VEC_cleanup (static_tracepoint_marker_p
), &markers
);
5461 VEC_iterate (static_tracepoint_marker_p
,
5462 markers
, i
, marker
);
5465 print_one_static_tracepoint_marker (i
+ 1, marker
);
5466 release_static_tracepoint_marker (marker
);
5469 do_cleanups (old_chain
);
5472 /* The $_sdata convenience variable is a bit special. We don't know
5473 for sure type of the value until we actually have a chance to fetch
5474 the data --- the size of the object depends on what has been
5475 collected. We solve this by making $_sdata be an internalvar that
5476 creates a new value on access. */
5478 /* Return a new value with the correct type for the sdata object of
5479 the current trace frame. Return a void value if there's no object
5482 static struct value
*
5483 sdata_make_value (struct gdbarch
*gdbarch
, struct internalvar
*var
,
5489 /* We need to read the whole object before we know its size. */
5490 size
= target_read_alloc (¤t_target
,
5491 TARGET_OBJECT_STATIC_TRACE_DATA
,
5498 type
= init_vector_type (builtin_type (gdbarch
)->builtin_true_char
,
5500 v
= allocate_value (type
);
5501 memcpy (value_contents_raw (v
), buf
, size
);
5506 return allocate_value (builtin_type (gdbarch
)->builtin_void
);
5509 #if !defined(HAVE_LIBEXPAT)
5511 struct traceframe_info
*
5512 parse_traceframe_info (const char *tframe_info
)
5514 static int have_warned
;
5519 warning (_("Can not parse XML trace frame info; XML support "
5520 "was disabled at compile time"));
5526 #else /* HAVE_LIBEXPAT */
5528 #include "xml-support.h"
5530 /* Handle the start of a <memory> element. */
5533 traceframe_info_start_memory (struct gdb_xml_parser
*parser
,
5534 const struct gdb_xml_element
*element
,
5535 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
5537 struct traceframe_info
*info
= user_data
;
5538 struct mem_range
*r
= VEC_safe_push (mem_range_s
, info
->memory
, NULL
);
5539 ULONGEST
*start_p
, *length_p
;
5541 start_p
= xml_find_attribute (attributes
, "start")->value
;
5542 length_p
= xml_find_attribute (attributes
, "length")->value
;
5544 r
->start
= *start_p
;
5545 r
->length
= *length_p
;
5548 /* Discard the constructed trace frame info (if an error occurs). */
5551 free_result (void *p
)
5553 struct traceframe_info
*result
= p
;
5555 free_traceframe_info (result
);
5558 /* The allowed elements and attributes for an XML memory map. */
5560 static const struct gdb_xml_attribute memory_attributes
[] = {
5561 { "start", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
5562 { "length", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
5563 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
5566 static const struct gdb_xml_element traceframe_info_children
[] = {
5567 { "memory", memory_attributes
, NULL
,
5568 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
5569 traceframe_info_start_memory
, NULL
},
5570 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
5573 static const struct gdb_xml_element traceframe_info_elements
[] = {
5574 { "traceframe-info", NULL
, traceframe_info_children
, GDB_XML_EF_NONE
,
5576 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
5579 /* Parse a traceframe-info XML document. */
5581 struct traceframe_info
*
5582 parse_traceframe_info (const char *tframe_info
)
5584 struct traceframe_info
*result
;
5585 struct cleanup
*back_to
;
5587 result
= XCNEW (struct traceframe_info
);
5588 back_to
= make_cleanup (free_result
, result
);
5590 if (gdb_xml_parse_quick (_("trace frame info"),
5591 "traceframe-info.dtd", traceframe_info_elements
,
5592 tframe_info
, result
) == 0)
5594 /* Parsed successfully, keep the result. */
5595 discard_cleanups (back_to
);
5600 do_cleanups (back_to
);
5604 #endif /* HAVE_LIBEXPAT */
5606 /* Returns the traceframe_info object for the current traceframe.
5607 This is where we avoid re-fetching the object from the target if we
5608 already have it cached. */
5610 static struct traceframe_info
*
5611 get_traceframe_info (void)
5613 if (traceframe_info
== NULL
)
5614 traceframe_info
= target_traceframe_info ();
5616 return traceframe_info
;
5619 /* If the target supports the query, return in RESULT the set of
5620 collected memory in the current traceframe, found within the LEN
5621 bytes range starting at MEMADDR. Returns true if the target
5622 supports the query, otherwise returns false, and RESULT is left
5626 traceframe_available_memory (VEC(mem_range_s
) **result
,
5627 CORE_ADDR memaddr
, ULONGEST len
)
5629 struct traceframe_info
*info
= get_traceframe_info ();
5633 struct mem_range
*r
;
5638 for (i
= 0; VEC_iterate (mem_range_s
, info
->memory
, i
, r
); i
++)
5639 if (mem_ranges_overlap (r
->start
, r
->length
, memaddr
, len
))
5641 ULONGEST lo1
, hi1
, lo2
, hi2
;
5642 struct mem_range
*nr
;
5645 hi1
= memaddr
+ len
;
5648 hi2
= r
->start
+ r
->length
;
5650 nr
= VEC_safe_push (mem_range_s
, *result
, NULL
);
5652 nr
->start
= max (lo1
, lo2
);
5653 nr
->length
= min (hi1
, hi2
) - nr
->start
;
5656 normalize_mem_ranges (*result
);
5663 /* Implementation of `sdata' variable. */
5665 static const struct internalvar_funcs sdata_funcs
=
5672 /* module initialization */
5674 _initialize_tracepoint (void)
5676 struct cmd_list_element
*c
;
5678 /* Explicitly create without lookup, since that tries to create a
5679 value with a void typed value, and when we get here, gdbarch
5680 isn't initialized yet. At this point, we're quite sure there
5681 isn't another convenience variable of the same name. */
5682 create_internalvar_type_lazy ("_sdata", &sdata_funcs
, NULL
);
5684 traceframe_number
= -1;
5685 tracepoint_number
= -1;
5687 if (tracepoint_list
.list
== NULL
)
5689 tracepoint_list
.listsize
= 128;
5690 tracepoint_list
.list
= xmalloc
5691 (tracepoint_list
.listsize
* sizeof (struct memrange
));
5693 if (tracepoint_list
.aexpr_list
== NULL
)
5695 tracepoint_list
.aexpr_listsize
= 128;
5696 tracepoint_list
.aexpr_list
= xmalloc
5697 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
5700 if (stepping_list
.list
== NULL
)
5702 stepping_list
.listsize
= 128;
5703 stepping_list
.list
= xmalloc
5704 (stepping_list
.listsize
* sizeof (struct memrange
));
5707 if (stepping_list
.aexpr_list
== NULL
)
5709 stepping_list
.aexpr_listsize
= 128;
5710 stepping_list
.aexpr_list
= xmalloc
5711 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
5714 add_info ("scope", scope_info
,
5715 _("List the variables local to a scope"));
5717 add_cmd ("tracepoints", class_trace
, NULL
,
5718 _("Tracing of program execution without stopping the program."),
5721 add_com ("tdump", class_trace
, trace_dump_command
,
5722 _("Print everything collected at the current tracepoint."));
5724 add_com ("tsave", class_trace
, trace_save_command
, _("\
5725 Save the trace data to a file.\n\
5726 Use the '-ctf' option to save the data to CTF format.\n\
5727 Use the '-r' option to direct the target to save directly to the file,\n\
5728 using its own filesystem."));
5730 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
5731 Define a trace state variable.\n\
5732 Argument is a $-prefixed name, optionally followed\n\
5733 by '=' and an expression that sets the initial value\n\
5734 at the start of tracing."));
5735 set_cmd_completer (c
, expression_completer
);
5737 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
5738 Delete one or more trace state variables.\n\
5739 Arguments are the names of the variables to delete.\n\
5740 If no arguments are supplied, delete all variables."), &deletelist
);
5741 /* FIXME add a trace variable completer. */
5743 add_info ("tvariables", tvariables_info
, _("\
5744 Status of trace state variables and their values.\n\
5747 add_info ("static-tracepoint-markers",
5748 info_static_tracepoint_markers_command
, _("\
5749 List target static tracepoints markers.\n\
5752 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
5753 Select a trace frame;\n\
5754 No argument means forward by one frame; '-' means backward by one frame."),
5755 &tfindlist
, "tfind ", 1, &cmdlist
);
5757 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
5758 Select a trace frame whose PC is outside the given range (exclusive).\n\
5759 Usage: tfind outside addr1, addr2"),
5762 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
5763 Select a trace frame whose PC is in the given range (inclusive).\n\
5764 Usage: tfind range addr1,addr2"),
5767 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
5768 Select a trace frame by source line.\n\
5769 Argument can be a line number (with optional source file),\n\
5770 a function name, or '*' followed by an address.\n\
5771 Default argument is 'the next source line that was traced'."),
5774 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
5775 Select a trace frame by tracepoint number.\n\
5776 Default is the tracepoint for the current trace frame."),
5779 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
5780 Select a trace frame by PC.\n\
5781 Default is the current PC, or the PC of the current trace frame."),
5784 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
5785 De-select any trace frame and resume 'live' debugging."),
5788 add_alias_cmd ("none", "end", class_trace
, 0, &tfindlist
);
5790 add_cmd ("start", class_trace
, trace_find_start_command
,
5791 _("Select the first trace frame in the trace buffer."),
5794 add_com ("tstatus", class_trace
, trace_status_command
,
5795 _("Display the status of the current trace data collection."));
5797 add_com ("tstop", class_trace
, trace_stop_command
, _("\
5798 Stop trace data collection.\n\
5799 Usage: tstop [ <notes> ... ]\n\
5800 Any arguments supplied are recorded with the trace as a stop reason and\n\
5801 reported by tstatus (if the target supports trace notes)."));
5803 add_com ("tstart", class_trace
, trace_start_command
, _("\
5804 Start trace data collection.\n\
5805 Usage: tstart [ <notes> ... ]\n\
5806 Any arguments supplied are recorded with the trace as a note and\n\
5807 reported by tstatus (if the target supports trace notes)."));
5809 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
5810 Ends a list of commands or actions.\n\
5811 Several GDB commands allow you to enter a list of commands or actions.\n\
5812 Entering \"end\" on a line by itself is the normal way to terminate\n\
5814 Note: the \"end\" command cannot be used at the gdb prompt."));
5816 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
5817 Specify single-stepping behavior at a tracepoint.\n\
5818 Argument is number of instructions to trace in single-step mode\n\
5819 following the tracepoint. This command is normally followed by\n\
5820 one or more \"collect\" commands, to specify what to collect\n\
5821 while single-stepping.\n\n\
5822 Note: this command can only be used in a tracepoint \"actions\" list."));
5824 add_com_alias ("ws", "while-stepping", class_alias
, 0);
5825 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
5827 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
5828 Specify one or more data items to be collected at a tracepoint.\n\
5829 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
5830 collect all data (variables, registers) referenced by that expression.\n\
5831 Also accepts the following special arguments:\n\
5832 $regs -- all registers.\n\
5833 $args -- all function arguments.\n\
5834 $locals -- all variables local to the block/function scope.\n\
5835 $_sdata -- static tracepoint data (ignored for non-static tracepoints).\n\
5836 Note: this command can only be used in a tracepoint \"actions\" list."));
5838 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
5839 Specify one or more expressions to be evaluated at a tracepoint.\n\
5840 Accepts a comma-separated list of (one or more) expressions.\n\
5841 The result of each evaluation will be discarded.\n\
5842 Note: this command can only be used in a tracepoint \"actions\" list."));
5844 add_com ("actions", class_trace
, trace_actions_command
, _("\
5845 Specify the actions to be taken at a tracepoint.\n\
5846 Tracepoint actions may include collecting of specified data,\n\
5847 single-stepping, or enabling/disabling other tracepoints,\n\
5848 depending on target's capabilities."));
5850 default_collect
= xstrdup ("");
5851 add_setshow_string_cmd ("default-collect", class_trace
,
5852 &default_collect
, _("\
5853 Set the list of expressions to collect by default"), _("\
5854 Show the list of expressions to collect by default"), NULL
,
5856 &setlist
, &showlist
);
5858 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
5859 &disconnected_tracing
, _("\
5860 Set whether tracing continues after GDB disconnects."), _("\
5861 Show whether tracing continues after GDB disconnects."), _("\
5862 Use this to continue a tracing run even if GDB disconnects\n\
5863 or detaches from the target. You can reconnect later and look at\n\
5864 trace data collected in the meantime."),
5865 set_disconnected_tracing
,
5870 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
5871 &circular_trace_buffer
, _("\
5872 Set target's use of circular trace buffer."), _("\
5873 Show target's use of circular trace buffer."), _("\
5874 Use this to make the trace buffer into a circular buffer,\n\
5875 which will discard traceframes (oldest first) instead of filling\n\
5876 up and stopping the trace run."),
5877 set_circular_trace_buffer
,
5882 add_setshow_zuinteger_unlimited_cmd ("trace-buffer-size", no_class
,
5883 &trace_buffer_size
, _("\
5884 Set requested size of trace buffer."), _("\
5885 Show requested size of trace buffer."), _("\
5886 Use this to choose a size for the trace buffer. Some targets\n\
5887 may have fixed or limited buffer sizes. Specifying \"unlimited\" or -1\n\
5888 disables any attempt to set the buffer size and lets the target choose."),
5889 set_trace_buffer_size
, NULL
,
5890 &setlist
, &showlist
);
5892 add_setshow_string_cmd ("trace-user", class_trace
,
5894 Set the user name to use for current and future trace runs"), _("\
5895 Show the user name to use for current and future trace runs"), NULL
,
5896 set_trace_user
, NULL
,
5897 &setlist
, &showlist
);
5899 add_setshow_string_cmd ("trace-notes", class_trace
,
5901 Set notes string to use for current and future trace runs"), _("\
5902 Show the notes string to use for current and future trace runs"), NULL
,
5903 set_trace_notes
, NULL
,
5904 &setlist
, &showlist
);
5906 add_setshow_string_cmd ("trace-stop-notes", class_trace
,
5907 &trace_stop_notes
, _("\
5908 Set notes string to use for future tstop commands"), _("\
5909 Show the notes string to use for future tstop commands"), NULL
,
5910 set_trace_stop_notes
, NULL
,
5911 &setlist
, &showlist
);
5915 add_target_with_completer (&tfile_ops
, filename_completer
);