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 /* This function handles the details of what to do about an ongoing
2208 tracing run if the user has asked to detach or otherwise disconnect
2211 disconnect_tracing (int from_tty
)
2213 /* It can happen that the target that was tracing went away on its
2214 own, and we didn't notice. Get a status update, and if the
2215 current target doesn't even do tracing, then assume it's not
2217 if (target_get_trace_status (current_trace_status ()) < 0)
2218 current_trace_status ()->running
= 0;
2220 /* If running interactively, give the user the option to cancel and
2221 then decide what to do differently with the run. Scripts are
2222 just going to disconnect and let the target deal with it,
2223 according to how it's been instructed previously via
2224 disconnected-tracing. */
2225 if (current_trace_status ()->running
&& from_tty
)
2227 process_tracepoint_on_disconnect ();
2229 if (current_trace_status ()->disconnected_tracing
)
2231 if (!query (_("Trace is running and will "
2232 "continue after detach; detach anyway? ")))
2233 error (_("Not confirmed."));
2237 if (!query (_("Trace is running but will "
2238 "stop on detach; detach anyway? ")))
2239 error (_("Not confirmed."));
2243 /* Also we want to be out of tfind mode, otherwise things can get
2244 confusing upon reconnection. Just use these calls instead of
2245 full tfind_1 behavior because we're in the middle of detaching,
2246 and there's no point to updating current stack frame etc. */
2247 set_current_traceframe (-1);
2248 set_tracepoint_num (-1);
2249 set_traceframe_context (NULL
);
2252 /* Worker function for the various flavors of the tfind command. */
2254 tfind_1 (enum trace_find_type type
, int num
,
2255 CORE_ADDR addr1
, CORE_ADDR addr2
,
2258 int target_frameno
= -1, target_tracept
= -1;
2259 struct frame_id old_frame_id
= null_frame_id
;
2260 struct tracepoint
*tp
;
2261 struct ui_out
*uiout
= current_uiout
;
2263 /* Only try to get the current stack frame if we have a chance of
2264 succeeding. In particular, if we're trying to get a first trace
2265 frame while all threads are running, it's not going to succeed,
2266 so leave it with a default value and let the frame comparison
2267 below (correctly) decide to print out the source location of the
2269 if (!(type
== tfind_number
&& num
== -1)
2270 && (has_stack_frames () || traceframe_number
>= 0))
2271 old_frame_id
= get_frame_id (get_current_frame ());
2273 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
2276 if (type
== tfind_number
2278 && target_frameno
== -1)
2280 /* We told the target to get out of tfind mode, and it did. */
2282 else if (target_frameno
== -1)
2284 /* A request for a non-existent trace frame has failed.
2285 Our response will be different, depending on FROM_TTY:
2287 If FROM_TTY is true, meaning that this command was
2288 typed interactively by the user, then give an error
2289 and DO NOT change the state of traceframe_number etc.
2291 However if FROM_TTY is false, meaning that we're either
2292 in a script, a loop, or a user-defined command, then
2293 DON'T give an error, but DO change the state of
2294 traceframe_number etc. to invalid.
2296 The rationalle is that if you typed the command, you
2297 might just have committed a typo or something, and you'd
2298 like to NOT lose your current debugging state. However
2299 if you're in a user-defined command or especially in a
2300 loop, then you need a way to detect that the command
2301 failed WITHOUT aborting. This allows you to write
2302 scripts that search thru the trace buffer until the end,
2303 and then continue on to do something else. */
2306 error (_("Target failed to find requested trace frame."));
2310 printf_filtered ("End of trace buffer.\n");
2311 #if 0 /* dubious now? */
2312 /* The following will not recurse, since it's
2314 trace_find_command ("-1", from_tty
);
2319 tp
= get_tracepoint_by_number_on_target (target_tracept
);
2321 reinit_frame_cache ();
2322 target_dcache_invalidate ();
2324 set_tracepoint_num (tp
? tp
->base
.number
: target_tracept
);
2326 if (target_frameno
!= get_traceframe_number ())
2327 observer_notify_traceframe_changed (target_frameno
, tracepoint_number
);
2329 set_current_traceframe (target_frameno
);
2331 if (target_frameno
== -1)
2332 set_traceframe_context (NULL
);
2334 set_traceframe_context (get_current_frame ());
2336 if (traceframe_number
>= 0)
2338 /* Use different branches for MI and CLI to make CLI messages
2340 if (ui_out_is_mi_like_p (uiout
))
2342 ui_out_field_string (uiout
, "found", "1");
2343 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
2344 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
2348 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
2349 traceframe_number
, tracepoint_number
);
2354 if (ui_out_is_mi_like_p (uiout
))
2355 ui_out_field_string (uiout
, "found", "0");
2356 else if (type
== tfind_number
&& num
== -1)
2357 printf_unfiltered (_("No longer looking at any trace frame\n"));
2358 else /* This case may never occur, check. */
2359 printf_unfiltered (_("No trace frame found\n"));
2362 /* If we're in nonstop mode and getting out of looking at trace
2363 frames, there won't be any current frame to go back to and
2366 && (has_stack_frames () || traceframe_number
>= 0))
2368 enum print_what print_what
;
2370 /* NOTE: in imitation of the step command, try to determine
2371 whether we have made a transition from one function to
2372 another. If so, we'll print the "stack frame" (ie. the new
2373 function and it's arguments) -- otherwise we'll just show the
2376 if (frame_id_eq (old_frame_id
,
2377 get_frame_id (get_current_frame ())))
2378 print_what
= SRC_LINE
;
2380 print_what
= SRC_AND_LOC
;
2382 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
2387 /* trace_find_command takes a trace frame number n,
2388 sends "QTFrame:<n>" to the target,
2389 and accepts a reply that may contain several optional pieces
2390 of information: a frame number, a tracepoint number, and an
2391 indication of whether this is a trap frame or a stepping frame.
2393 The minimal response is just "OK" (which indicates that the
2394 target does not give us a frame number or a tracepoint number).
2395 Instead of that, the target may send us a string containing
2397 F<hexnum> (gives the selected frame number)
2398 T<hexnum> (gives the selected tracepoint number)
2403 trace_find_command (char *args
, int from_tty
)
2404 { /* This should only be called with a numeric argument. */
2407 if (current_trace_status ()->running
2408 && current_trace_status ()->filename
== NULL
)
2409 error (_("May not look at trace frames while trace is running."));
2411 if (args
== 0 || *args
== 0)
2412 { /* TFIND with no args means find NEXT trace frame. */
2413 if (traceframe_number
== -1)
2414 frameno
= 0; /* "next" is first one. */
2416 frameno
= traceframe_number
+ 1;
2418 else if (0 == strcmp (args
, "-"))
2420 if (traceframe_number
== -1)
2421 error (_("not debugging trace buffer"));
2422 else if (from_tty
&& traceframe_number
== 0)
2423 error (_("already at start of trace buffer"));
2425 frameno
= traceframe_number
- 1;
2427 /* A hack to work around eval's need for fp to have been collected. */
2428 else if (0 == strcmp (args
, "-1"))
2431 frameno
= parse_and_eval_long (args
);
2434 error (_("invalid input (%d is less than zero)"), frameno
);
2436 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
2441 trace_find_end_command (char *args
, int from_tty
)
2443 trace_find_command ("-1", from_tty
);
2448 trace_find_start_command (char *args
, int from_tty
)
2450 trace_find_command ("0", from_tty
);
2453 /* tfind pc command */
2455 trace_find_pc_command (char *args
, int from_tty
)
2459 if (current_trace_status ()->running
2460 && current_trace_status ()->filename
== NULL
)
2461 error (_("May not look at trace frames while trace is running."));
2463 if (args
== 0 || *args
== 0)
2464 pc
= regcache_read_pc (get_current_regcache ());
2466 pc
= parse_and_eval_address (args
);
2468 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
2471 /* tfind tracepoint command */
2473 trace_find_tracepoint_command (char *args
, int from_tty
)
2476 struct tracepoint
*tp
;
2478 if (current_trace_status ()->running
2479 && current_trace_status ()->filename
== NULL
)
2480 error (_("May not look at trace frames while trace is running."));
2482 if (args
== 0 || *args
== 0)
2484 if (tracepoint_number
== -1)
2485 error (_("No current tracepoint -- please supply an argument."));
2487 tdp
= tracepoint_number
; /* Default is current TDP. */
2490 tdp
= parse_and_eval_long (args
);
2492 /* If we have the tracepoint on hand, use the number that the
2493 target knows about (which may be different if we disconnected
2494 and reconnected). */
2495 tp
= get_tracepoint (tdp
);
2497 tdp
= tp
->number_on_target
;
2499 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
2502 /* TFIND LINE command:
2504 This command will take a sourceline for argument, just like BREAK
2505 or TRACE (ie. anything that "decode_line_1" can handle).
2507 With no argument, this command will find the next trace frame
2508 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2511 trace_find_line_command (char *args
, int from_tty
)
2513 static CORE_ADDR start_pc
, end_pc
;
2514 struct symtabs_and_lines sals
;
2515 struct symtab_and_line sal
;
2516 struct cleanup
*old_chain
;
2518 if (current_trace_status ()->running
2519 && current_trace_status ()->filename
== NULL
)
2520 error (_("May not look at trace frames while trace is running."));
2522 if (args
== 0 || *args
== 0)
2524 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2526 sals
.sals
= (struct symtab_and_line
*)
2527 xmalloc (sizeof (struct symtab_and_line
));
2532 sals
= decode_line_with_current_source (args
, DECODE_LINE_FUNFIRSTLINE
);
2536 old_chain
= make_cleanup (xfree
, sals
.sals
);
2537 if (sal
.symtab
== 0)
2538 error (_("No line number information available."));
2540 if (sal
.line
> 0 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2542 if (start_pc
== end_pc
)
2544 printf_filtered ("Line %d of \"%s\"",
2546 symtab_to_filename_for_display (sal
.symtab
));
2548 printf_filtered (" is at address ");
2549 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2551 printf_filtered (" but contains no code.\n");
2552 sal
= find_pc_line (start_pc
, 0);
2554 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2555 && start_pc
!= end_pc
)
2556 printf_filtered ("Attempting to find line %d instead.\n",
2559 error (_("Cannot find a good line."));
2563 /* Is there any case in which we get here, and have an address
2564 which the user would want to see? If we have debugging
2565 symbols and no line numbers? */
2566 error (_("Line number %d is out of range for \"%s\"."),
2567 sal
.line
, symtab_to_filename_for_display (sal
.symtab
));
2569 /* Find within range of stated line. */
2571 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2573 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2574 do_cleanups (old_chain
);
2577 /* tfind range command */
2579 trace_find_range_command (char *args
, int from_tty
)
2581 static CORE_ADDR start
, stop
;
2584 if (current_trace_status ()->running
2585 && current_trace_status ()->filename
== NULL
)
2586 error (_("May not look at trace frames while trace is running."));
2588 if (args
== 0 || *args
== 0)
2589 { /* XXX FIXME: what should default behavior be? */
2590 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2594 if (0 != (tmp
= strchr (args
, ',')))
2596 *tmp
++ = '\0'; /* Terminate start address. */
2597 tmp
= skip_spaces (tmp
);
2598 start
= parse_and_eval_address (args
);
2599 stop
= parse_and_eval_address (tmp
);
2602 { /* No explicit end address? */
2603 start
= parse_and_eval_address (args
);
2604 stop
= start
+ 1; /* ??? */
2607 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2610 /* tfind outside command */
2612 trace_find_outside_command (char *args
, int from_tty
)
2614 CORE_ADDR start
, stop
;
2617 if (current_trace_status ()->running
2618 && current_trace_status ()->filename
== NULL
)
2619 error (_("May not look at trace frames while trace is running."));
2621 if (args
== 0 || *args
== 0)
2622 { /* XXX FIXME: what should default behavior be? */
2623 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2627 if (0 != (tmp
= strchr (args
, ',')))
2629 *tmp
++ = '\0'; /* Terminate start address. */
2630 tmp
= skip_spaces (tmp
);
2631 start
= parse_and_eval_address (args
);
2632 stop
= parse_and_eval_address (tmp
);
2635 { /* No explicit end address? */
2636 start
= parse_and_eval_address (args
);
2637 stop
= start
+ 1; /* ??? */
2640 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2643 /* info scope command: list the locals for a scope. */
2645 scope_info (char *args
, int from_tty
)
2647 struct symtabs_and_lines sals
;
2649 struct minimal_symbol
*msym
;
2650 struct block
*block
;
2651 const char *symname
;
2652 char *save_args
= args
;
2653 struct block_iterator iter
;
2655 struct gdbarch
*gdbarch
;
2658 if (args
== 0 || *args
== 0)
2659 error (_("requires an argument (function, "
2660 "line or *addr) to define a scope"));
2662 sals
= decode_line_1 (&args
, DECODE_LINE_FUNFIRSTLINE
, NULL
, 0);
2663 if (sals
.nelts
== 0)
2664 return; /* Presumably decode_line_1 has already warned. */
2666 /* Resolve line numbers to PC. */
2667 resolve_sal_pc (&sals
.sals
[0]);
2668 block
= block_for_pc (sals
.sals
[0].pc
);
2672 QUIT
; /* Allow user to bail out with ^C. */
2673 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2675 QUIT
; /* Allow user to bail out with ^C. */
2677 printf_filtered ("Scope for %s:\n", save_args
);
2680 symname
= SYMBOL_PRINT_NAME (sym
);
2681 if (symname
== NULL
|| *symname
== '\0')
2682 continue; /* Probably botched, certainly useless. */
2684 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2686 printf_filtered ("Symbol %s is ", symname
);
2688 if (SYMBOL_COMPUTED_OPS (sym
) != NULL
)
2689 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
,
2690 BLOCK_START (block
),
2694 switch (SYMBOL_CLASS (sym
))
2697 case LOC_UNDEF
: /* Messed up symbol? */
2698 printf_filtered ("a bogus symbol, class %d.\n",
2699 SYMBOL_CLASS (sym
));
2700 count
--; /* Don't count this one. */
2703 printf_filtered ("a constant with value %s (%s)",
2704 plongest (SYMBOL_VALUE (sym
)),
2705 hex_string (SYMBOL_VALUE (sym
)));
2707 case LOC_CONST_BYTES
:
2708 printf_filtered ("constant bytes: ");
2709 if (SYMBOL_TYPE (sym
))
2710 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2711 fprintf_filtered (gdb_stdout
, " %02x",
2712 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2715 printf_filtered ("in static storage at address ");
2716 printf_filtered ("%s", paddress (gdbarch
,
2717 SYMBOL_VALUE_ADDRESS (sym
)));
2720 /* GDBARCH is the architecture associated with the objfile
2721 the symbol is defined in; the target architecture may be
2722 different, and may provide additional registers. However,
2723 we do not know the target architecture at this point.
2724 We assume the objfile architecture will contain all the
2725 standard registers that occur in debug info in that
2727 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
,
2730 if (SYMBOL_IS_ARGUMENT (sym
))
2731 printf_filtered ("an argument in register $%s",
2732 gdbarch_register_name (gdbarch
, regno
));
2734 printf_filtered ("a local variable in register $%s",
2735 gdbarch_register_name (gdbarch
, regno
));
2738 printf_filtered ("an argument at stack/frame offset %s",
2739 plongest (SYMBOL_VALUE (sym
)));
2742 printf_filtered ("a local variable at frame offset %s",
2743 plongest (SYMBOL_VALUE (sym
)));
2746 printf_filtered ("a reference argument at offset %s",
2747 plongest (SYMBOL_VALUE (sym
)));
2749 case LOC_REGPARM_ADDR
:
2750 /* Note comment at LOC_REGISTER. */
2751 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
,
2753 printf_filtered ("the address of an argument, in register $%s",
2754 gdbarch_register_name (gdbarch
, regno
));
2757 printf_filtered ("a typedef.\n");
2760 printf_filtered ("a label at address ");
2761 printf_filtered ("%s", paddress (gdbarch
,
2762 SYMBOL_VALUE_ADDRESS (sym
)));
2765 printf_filtered ("a function at address ");
2766 printf_filtered ("%s",
2767 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2769 case LOC_UNRESOLVED
:
2770 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2773 printf_filtered ("Unresolved Static");
2776 printf_filtered ("static storage at address ");
2777 printf_filtered ("%s",
2779 SYMBOL_VALUE_ADDRESS (msym
)));
2782 case LOC_OPTIMIZED_OUT
:
2783 printf_filtered ("optimized out.\n");
2786 gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
2789 if (SYMBOL_TYPE (sym
))
2790 printf_filtered (", length %d.\n",
2791 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2793 if (BLOCK_FUNCTION (block
))
2796 block
= BLOCK_SUPERBLOCK (block
);
2799 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2803 /* Helper for trace_dump_command. Dump the action list starting at
2804 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2805 actions of the body of a while-stepping action. STEPPING_FRAME is
2806 set if the current traceframe was determined to be a while-stepping
2810 trace_dump_actions (struct command_line
*action
,
2811 int stepping_actions
, int stepping_frame
,
2814 const char *action_exp
, *next_comma
;
2816 for (; action
!= NULL
; action
= action
->next
)
2818 struct cmd_list_element
*cmd
;
2820 QUIT
; /* Allow user to bail out with ^C. */
2821 action_exp
= action
->line
;
2822 action_exp
= skip_spaces_const (action_exp
);
2824 /* The collection actions to be done while stepping are
2825 bracketed by the commands "while-stepping" and "end". */
2827 if (*action_exp
== '#') /* comment line */
2830 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2832 error (_("Bad action list item: %s"), action_exp
);
2834 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2838 for (i
= 0; i
< action
->body_count
; ++i
)
2839 trace_dump_actions (action
->body_list
[i
],
2840 1, stepping_frame
, from_tty
);
2842 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2844 /* Display the collected data.
2845 For the trap frame, display only what was collected at
2846 the trap. Likewise for stepping frames, display only
2847 what was collected while stepping. This means that the
2848 two boolean variables, STEPPING_FRAME and
2849 STEPPING_ACTIONS should be equal. */
2850 if (stepping_frame
== stepping_actions
)
2853 struct cleanup
*old_chain
2854 = make_cleanup (free_current_contents
, &cmd
);
2855 int trace_string
= 0;
2857 if (*action_exp
== '/')
2858 action_exp
= decode_agent_options (action_exp
, &trace_string
);
2861 { /* Repeat over a comma-separated list. */
2862 QUIT
; /* Allow user to bail out with ^C. */
2863 if (*action_exp
== ',')
2865 action_exp
= skip_spaces_const (action_exp
);
2867 next_comma
= strchr (action_exp
, ',');
2869 if (0 == strncasecmp (action_exp
, "$reg", 4))
2870 registers_info (NULL
, from_tty
);
2871 else if (0 == strncasecmp (action_exp
, "$_ret", 5))
2873 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2874 locals_info (NULL
, from_tty
);
2875 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2876 args_info (NULL
, from_tty
);
2879 if (next_comma
!= NULL
)
2881 size_t len
= next_comma
- action_exp
;
2883 cmd
= xrealloc (cmd
, len
+ 1);
2884 memcpy (cmd
, action_exp
, len
);
2889 size_t len
= strlen (action_exp
);
2891 cmd
= xrealloc (cmd
, len
+ 1);
2892 memcpy (cmd
, action_exp
, len
+ 1);
2895 printf_filtered ("%s = ", cmd
);
2896 output_command_const (cmd
, from_tty
);
2897 printf_filtered ("\n");
2899 action_exp
= next_comma
;
2901 while (action_exp
&& *action_exp
== ',');
2903 do_cleanups (old_chain
);
2909 /* The tdump command. */
2912 trace_dump_command (char *args
, int from_tty
)
2914 struct regcache
*regcache
;
2915 struct tracepoint
*t
;
2916 int stepping_frame
= 0;
2917 struct bp_location
*loc
;
2918 char *default_collect_line
= NULL
;
2919 struct command_line
*actions
, *default_collect_action
= NULL
;
2920 struct cleanup
*old_chain
= NULL
;
2922 if (tracepoint_number
== -1)
2924 warning (_("No current trace frame."));
2928 t
= get_tracepoint (tracepoint_number
);
2931 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2934 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2935 tracepoint_number
, traceframe_number
);
2937 /* The current frame is a trap frame if the frame PC is equal
2938 to the tracepoint PC. If not, then the current frame was
2939 collected during single-stepping. */
2941 regcache
= get_current_regcache ();
2943 /* If the traceframe's address matches any of the tracepoint's
2944 locations, assume it is a direct hit rather than a while-stepping
2945 frame. (FIXME this is not reliable, should record each frame's
2948 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
2949 if (loc
->address
== regcache_read_pc (regcache
))
2952 actions
= breakpoint_commands (&t
->base
);
2954 /* If there is a default-collect list, make up a collect command,
2955 prepend to the tracepoint's commands, and pass the whole mess to
2956 the trace dump scanner. We need to validate because
2957 default-collect might have been junked since the trace run. */
2958 if (*default_collect
)
2960 default_collect_line
= xstrprintf ("collect %s", default_collect
);
2961 old_chain
= make_cleanup (xfree
, default_collect_line
);
2962 validate_actionline (default_collect_line
, &t
->base
);
2963 default_collect_action
= xmalloc (sizeof (struct command_line
));
2964 make_cleanup (xfree
, default_collect_action
);
2965 default_collect_action
->next
= actions
;
2966 default_collect_action
->line
= default_collect_line
;
2967 actions
= default_collect_action
;
2970 trace_dump_actions (actions
, 0, stepping_frame
, from_tty
);
2972 if (*default_collect
)
2973 do_cleanups (old_chain
);
2976 /* Encode a piece of a tracepoint's source-level definition in a form
2977 that is suitable for both protocol and saving in files. */
2978 /* This version does not do multiple encodes for long strings; it should
2979 return an offset to the next piece to encode. FIXME */
2982 encode_source_string (int tpnum
, ULONGEST addr
,
2983 char *srctype
, char *src
, char *buf
, int buf_size
)
2985 if (80 + strlen (srctype
) > buf_size
)
2986 error (_("Buffer too small for source encoding"));
2987 sprintf (buf
, "%x:%s:%s:%x:%x:",
2988 tpnum
, phex_nz (addr
, sizeof (addr
)),
2989 srctype
, 0, (int) strlen (src
));
2990 if (strlen (buf
) + strlen (src
) * 2 >= buf_size
)
2991 error (_("Source string too long for buffer"));
2992 bin2hex (src
, buf
+ strlen (buf
), 0);
2996 /* Free trace file writer. */
2999 trace_file_writer_xfree (void *arg
)
3001 struct trace_file_writer
*writer
= arg
;
3003 writer
->ops
->dtor (writer
);
3007 /* TFILE trace writer. */
3009 struct tfile_trace_file_writer
3011 struct trace_file_writer base
;
3013 /* File pointer to tfile trace file. */
3015 /* Path name of the tfile trace file. */
3019 /* This is the implementation of trace_file_write_ops method
3020 target_save. We just call the generic target
3021 target_save_trace_data to do target-side saving. */
3024 tfile_target_save (struct trace_file_writer
*self
,
3025 const char *filename
)
3027 int err
= target_save_trace_data (filename
);
3032 /* This is the implementation of trace_file_write_ops method
3036 tfile_dtor (struct trace_file_writer
*self
)
3038 struct tfile_trace_file_writer
*writer
3039 = (struct tfile_trace_file_writer
*) self
;
3041 xfree (writer
->pathname
);
3043 if (writer
->fp
!= NULL
)
3044 fclose (writer
->fp
);
3047 /* This is the implementation of trace_file_write_ops method
3048 start. It creates the trace file FILENAME and registers some
3052 tfile_start (struct trace_file_writer
*self
, const char *filename
)
3054 struct tfile_trace_file_writer
*writer
3055 = (struct tfile_trace_file_writer
*) self
;
3057 writer
->pathname
= tilde_expand (filename
);
3058 writer
->fp
= fopen (writer
->pathname
, "wb");
3059 if (writer
->fp
== NULL
)
3060 error (_("Unable to open file '%s' for saving trace data (%s)"),
3061 filename
, safe_strerror (errno
));
3064 /* This is the implementation of trace_file_write_ops method
3065 write_header. Write the TFILE header. */
3068 tfile_write_header (struct trace_file_writer
*self
)
3070 struct tfile_trace_file_writer
*writer
3071 = (struct tfile_trace_file_writer
*) self
;
3074 /* Write a file header, with a high-bit-set char to indicate a
3075 binary file, plus a hint as what this file is, and a version
3076 number in case of future needs. */
3077 written
= fwrite ("\x7fTRACE0\n", 8, 1, writer
->fp
);
3079 perror_with_name (writer
->pathname
);
3082 /* This is the implementation of trace_file_write_ops method
3083 write_regblock_type. Write the size of register block. */
3086 tfile_write_regblock_type (struct trace_file_writer
*self
, int size
)
3088 struct tfile_trace_file_writer
*writer
3089 = (struct tfile_trace_file_writer
*) self
;
3091 fprintf (writer
->fp
, "R %x\n", size
);
3094 /* This is the implementation of trace_file_write_ops method
3098 tfile_write_status (struct trace_file_writer
*self
,
3099 struct trace_status
*ts
)
3101 struct tfile_trace_file_writer
*writer
3102 = (struct tfile_trace_file_writer
*) self
;
3104 fprintf (writer
->fp
, "status %c;%s",
3105 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
3106 if (ts
->stop_reason
== tracepoint_error
3107 || ts
->stop_reason
== tstop_command
)
3109 char *buf
= (char *) alloca (strlen (ts
->stop_desc
) * 2 + 1);
3111 bin2hex ((gdb_byte
*) ts
->stop_desc
, buf
, 0);
3112 fprintf (writer
->fp
, ":%s", buf
);
3114 fprintf (writer
->fp
, ":%x", ts
->stopping_tracepoint
);
3115 if (ts
->traceframe_count
>= 0)
3116 fprintf (writer
->fp
, ";tframes:%x", ts
->traceframe_count
);
3117 if (ts
->traceframes_created
>= 0)
3118 fprintf (writer
->fp
, ";tcreated:%x", ts
->traceframes_created
);
3119 if (ts
->buffer_free
>= 0)
3120 fprintf (writer
->fp
, ";tfree:%x", ts
->buffer_free
);
3121 if (ts
->buffer_size
>= 0)
3122 fprintf (writer
->fp
, ";tsize:%x", ts
->buffer_size
);
3123 if (ts
->disconnected_tracing
)
3124 fprintf (writer
->fp
, ";disconn:%x", ts
->disconnected_tracing
);
3125 if (ts
->circular_buffer
)
3126 fprintf (writer
->fp
, ";circular:%x", ts
->circular_buffer
);
3127 if (ts
->notes
!= NULL
)
3129 char *buf
= (char *) alloca (strlen (ts
->notes
) * 2 + 1);
3131 bin2hex ((gdb_byte
*) ts
->notes
, buf
, 0);
3132 fprintf (writer
->fp
, ";notes:%s", buf
);
3134 if (ts
->user_name
!= NULL
)
3136 char *buf
= (char *) alloca (strlen (ts
->user_name
) * 2 + 1);
3138 bin2hex ((gdb_byte
*) ts
->user_name
, buf
, 0);
3139 fprintf (writer
->fp
, ";username:%s", buf
);
3141 fprintf (writer
->fp
, "\n");
3144 /* This is the implementation of trace_file_write_ops method
3145 write_uploaded_tsv. */
3148 tfile_write_uploaded_tsv (struct trace_file_writer
*self
,
3149 struct uploaded_tsv
*utsv
)
3152 struct tfile_trace_file_writer
*writer
3153 = (struct tfile_trace_file_writer
*) self
;
3157 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
3158 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
3161 fprintf (writer
->fp
, "tsv %x:%s:%x:%s\n",
3162 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
3163 utsv
->builtin
, buf
);
3169 #define MAX_TRACE_UPLOAD 2000
3171 /* This is the implementation of trace_file_write_ops method
3172 write_uploaded_tp. */
3175 tfile_write_uploaded_tp (struct trace_file_writer
*self
,
3176 struct uploaded_tp
*utp
)
3178 struct tfile_trace_file_writer
*writer
3179 = (struct tfile_trace_file_writer
*) self
;
3182 gdb_byte buf
[MAX_TRACE_UPLOAD
];
3184 fprintf (writer
->fp
, "tp T%x:%s:%c:%x:%x",
3185 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
3186 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
3187 if (utp
->type
== bp_fast_tracepoint
)
3188 fprintf (writer
->fp
, ":F%x", utp
->orig_size
);
3190 fprintf (writer
->fp
,
3191 ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
3193 fprintf (writer
->fp
, "\n");
3194 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
3195 fprintf (writer
->fp
, "tp A%x:%s:%s\n",
3196 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
3197 for (a
= 0; VEC_iterate (char_ptr
, utp
->step_actions
, a
, act
); ++a
)
3198 fprintf (writer
->fp
, "tp S%x:%s:%s\n",
3199 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
3202 encode_source_string (utp
->number
, utp
->addr
,
3203 "at", utp
->at_string
, buf
, MAX_TRACE_UPLOAD
);
3204 fprintf (writer
->fp
, "tp Z%s\n", buf
);
3206 if (utp
->cond_string
)
3208 encode_source_string (utp
->number
, utp
->addr
,
3209 "cond", utp
->cond_string
,
3210 buf
, MAX_TRACE_UPLOAD
);
3211 fprintf (writer
->fp
, "tp Z%s\n", buf
);
3213 for (a
= 0; VEC_iterate (char_ptr
, utp
->cmd_strings
, a
, act
); ++a
)
3215 encode_source_string (utp
->number
, utp
->addr
, "cmd", act
,
3216 buf
, MAX_TRACE_UPLOAD
);
3217 fprintf (writer
->fp
, "tp Z%s\n", buf
);
3219 fprintf (writer
->fp
, "tp V%x:%s:%x:%s\n",
3220 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
3222 phex_nz (utp
->traceframe_usage
,
3223 sizeof (utp
->traceframe_usage
)));
3226 /* This is the implementation of trace_file_write_ops method
3227 write_definition_end. */
3230 tfile_write_definition_end (struct trace_file_writer
*self
)
3232 struct tfile_trace_file_writer
*writer
3233 = (struct tfile_trace_file_writer
*) self
;
3235 fprintf (writer
->fp
, "\n");
3238 /* This is the implementation of trace_file_write_ops method
3242 tfile_write_raw_data (struct trace_file_writer
*self
, gdb_byte
*buf
,
3245 struct tfile_trace_file_writer
*writer
3246 = (struct tfile_trace_file_writer
*) self
;
3248 if (fwrite (buf
, len
, 1, writer
->fp
) < 1)
3249 perror_with_name (writer
->pathname
);
3252 /* This is the implementation of trace_file_write_ops method
3256 tfile_end (struct trace_file_writer
*self
)
3258 struct tfile_trace_file_writer
*writer
3259 = (struct tfile_trace_file_writer
*) self
;
3260 uint32_t gotten
= 0;
3262 /* Mark the end of trace data. */
3263 if (fwrite (&gotten
, 4, 1, writer
->fp
) < 1)
3264 perror_with_name (writer
->pathname
);
3267 /* Operations to write trace buffers into TFILE format. */
3269 static const struct trace_file_write_ops tfile_write_ops
=
3275 tfile_write_regblock_type
,
3277 tfile_write_uploaded_tsv
,
3278 tfile_write_uploaded_tp
,
3279 tfile_write_definition_end
,
3280 tfile_write_raw_data
,
3285 /* Helper macros. */
3287 #define TRACE_WRITE_R_BLOCK(writer, buf, size) \
3288 writer->ops->frame_ops->write_r_block ((writer), (buf), (size))
3289 #define TRACE_WRITE_M_BLOCK_HEADER(writer, addr, size) \
3290 writer->ops->frame_ops->write_m_block_header ((writer), (addr), \
3292 #define TRACE_WRITE_M_BLOCK_MEMORY(writer, buf, size) \
3293 writer->ops->frame_ops->write_m_block_memory ((writer), (buf), \
3295 #define TRACE_WRITE_V_BLOCK(writer, num, val) \
3296 writer->ops->frame_ops->write_v_block ((writer), (num), (val))
3298 /* Save tracepoint data to file named FILENAME through WRITER. WRITER
3299 determines the trace file format. If TARGET_DOES_SAVE is non-zero,
3300 the save is performed on the target, otherwise GDB obtains all trace
3301 data and saves it locally. */
3304 trace_save (const char *filename
, struct trace_file_writer
*writer
,
3305 int target_does_save
)
3307 struct trace_status
*ts
= current_trace_status ();
3309 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
3310 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
3312 ULONGEST offset
= 0;
3313 gdb_byte buf
[MAX_TRACE_UPLOAD
];
3315 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch ());
3317 /* If the target is to save the data to a file on its own, then just
3318 send the command and be done with it. */
3319 if (target_does_save
)
3321 if (!writer
->ops
->target_save (writer
, filename
))
3322 error (_("Target failed to save trace data to '%s'."),
3327 /* Get the trace status first before opening the file, so if the
3328 target is losing, we can get out without touching files. */
3329 status
= target_get_trace_status (ts
);
3331 writer
->ops
->start (writer
, filename
);
3333 writer
->ops
->write_header (writer
);
3335 /* Write descriptive info. */
3337 /* Write out the size of a register block. */
3338 writer
->ops
->write_regblock_type (writer
, trace_regblock_size
);
3340 /* Write out status of the tracing run (aka "tstatus" info). */
3341 writer
->ops
->write_status (writer
, ts
);
3343 /* Note that we want to upload tracepoints and save those, rather
3344 than simply writing out the local ones, because the user may have
3345 changed tracepoints in GDB in preparation for a future tracing
3346 run, or maybe just mass-deleted all types of breakpoints as part
3347 of cleaning up. So as not to contaminate the session, leave the
3348 data in its uploaded form, don't make into real tracepoints. */
3350 /* Get trace state variables first, they may be checked when parsing
3351 uploaded commands. */
3353 target_upload_trace_state_variables (&uploaded_tsvs
);
3355 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
3356 writer
->ops
->write_uploaded_tsv (writer
, utsv
);
3358 free_uploaded_tsvs (&uploaded_tsvs
);
3360 target_upload_tracepoints (&uploaded_tps
);
3362 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
3363 target_get_tracepoint_status (NULL
, utp
);
3365 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
3366 writer
->ops
->write_uploaded_tp (writer
, utp
);
3368 free_uploaded_tps (&uploaded_tps
);
3370 /* Mark the end of the definition section. */
3371 writer
->ops
->write_definition_end (writer
);
3373 /* Get and write the trace data proper. */
3378 /* The writer supports writing the contents of trace buffer
3379 directly to trace file. Don't parse the contents of trace
3381 if (writer
->ops
->write_trace_buffer
!= NULL
)
3383 /* We ask for big blocks, in the hopes of efficiency, but
3384 will take less if the target has packet size limitations
3386 gotten
= target_get_raw_trace_data (buf
, offset
,
3389 error (_("Failure to get requested trace buffer data"));
3390 /* No more data is forthcoming, we're done. */
3394 writer
->ops
->write_trace_buffer (writer
, buf
, gotten
);
3402 /* Parse the trace buffers according to how data are stored
3403 in trace buffer in GDBserver. */
3405 gotten
= target_get_raw_trace_data (buf
, offset
, 6);
3410 /* Read the first six bytes in, which is the tracepoint
3411 number and trace frame size. */
3413 extract_unsigned_integer (&buf
[0], 2, byte_order
);
3415 tf_size
= (uint32_t)
3416 extract_unsigned_integer (&buf
[2], 4, byte_order
);
3418 writer
->ops
->frame_ops
->start (writer
, tp_num
);
3427 for (block
= 0; block
< tf_size
; )
3429 gdb_byte block_type
;
3431 /* We'll fetch one block each time, in order to
3432 handle the extremely large 'M' block. We first
3433 fetch one byte to get the type of the block. */
3434 gotten
= target_get_raw_trace_data (buf
, offset
, 1);
3436 error (_("Failure to get requested trace buffer data"));
3442 block_type
= buf
[0];
3447 = target_get_raw_trace_data (buf
, offset
,
3448 trace_regblock_size
);
3449 if (gotten
< trace_regblock_size
)
3450 error (_("Failure to get requested trace"
3453 TRACE_WRITE_R_BLOCK (writer
, buf
,
3454 trace_regblock_size
);
3458 unsigned short mlen
;
3463 t
= target_get_raw_trace_data (buf
,offset
, 10);
3465 error (_("Failure to get requested trace"
3473 extract_unsigned_integer (buf
, 8,
3475 mlen
= (unsigned short)
3476 extract_unsigned_integer (&buf
[8], 2,
3479 TRACE_WRITE_M_BLOCK_HEADER (writer
, addr
,
3482 /* The memory contents in 'M' block may be
3483 very large. Fetch the data from the target
3484 and write them into file one by one. */
3485 for (j
= 0; j
< mlen
; )
3487 unsigned int read_length
;
3489 if (mlen
- j
> MAX_TRACE_UPLOAD
)
3490 read_length
= MAX_TRACE_UPLOAD
;
3492 read_length
= mlen
- j
;
3494 t
= target_get_raw_trace_data (buf
,
3497 if (t
< read_length
)
3498 error (_("Failure to get requested"
3499 " trace buffer data"));
3501 TRACE_WRITE_M_BLOCK_MEMORY (writer
, buf
,
3505 gotten
+= read_length
;
3516 = target_get_raw_trace_data (buf
, offset
,
3519 error (_("Failure to get requested"
3520 " trace buffer data"));
3522 vnum
= (int) extract_signed_integer (buf
,
3526 = extract_signed_integer (&buf
[4], 8,
3529 TRACE_WRITE_V_BLOCK (writer
, vnum
, val
);
3533 error (_("Unknown block type '%c' (0x%x) in"
3535 block_type
, block_type
);
3545 writer
->ops
->frame_ops
->end (writer
);
3549 writer
->ops
->end (writer
);
3552 /* Return a trace writer for TFILE format. */
3554 static struct trace_file_writer
*
3555 tfile_trace_file_writer_new (void)
3557 struct tfile_trace_file_writer
*writer
3558 = xmalloc (sizeof (struct tfile_trace_file_writer
));
3560 writer
->base
.ops
= &tfile_write_ops
;
3562 writer
->pathname
= NULL
;
3564 return (struct trace_file_writer
*) writer
;
3568 trace_save_command (char *args
, int from_tty
)
3570 int target_does_save
= 0;
3572 char *filename
= NULL
;
3573 struct cleanup
*back_to
;
3574 int generate_ctf
= 0;
3575 struct trace_file_writer
*writer
= NULL
;
3578 error_no_arg (_("file in which to save trace data"));
3580 argv
= gdb_buildargv (args
);
3581 back_to
= make_cleanup_freeargv (argv
);
3583 for (; *argv
; ++argv
)
3585 if (strcmp (*argv
, "-r") == 0)
3586 target_does_save
= 1;
3587 if (strcmp (*argv
, "-ctf") == 0)
3589 else if (**argv
== '-')
3590 error (_("unknown option `%s'"), *argv
);
3596 error_no_arg (_("file in which to save trace data"));
3599 writer
= ctf_trace_file_writer_new ();
3601 writer
= tfile_trace_file_writer_new ();
3603 make_cleanup (trace_file_writer_xfree
, writer
);
3605 trace_save (filename
, writer
, target_does_save
);
3608 printf_filtered (_("Trace data saved to %s '%s'.\n"),
3609 generate_ctf
? "directory" : "file", filename
);
3611 do_cleanups (back_to
);
3614 /* Save the trace data to file FILENAME of tfile format. */
3617 trace_save_tfile (const char *filename
, int target_does_save
)
3619 struct trace_file_writer
*writer
;
3620 struct cleanup
*back_to
;
3622 writer
= tfile_trace_file_writer_new ();
3623 back_to
= make_cleanup (trace_file_writer_xfree
, writer
);
3624 trace_save (filename
, writer
, target_does_save
);
3625 do_cleanups (back_to
);
3628 /* Save the trace data to dir DIRNAME of ctf format. */
3631 trace_save_ctf (const char *dirname
, int target_does_save
)
3633 struct trace_file_writer
*writer
;
3634 struct cleanup
*back_to
;
3636 writer
= ctf_trace_file_writer_new ();
3637 back_to
= make_cleanup (trace_file_writer_xfree
, writer
);
3639 trace_save (dirname
, writer
, target_does_save
);
3640 do_cleanups (back_to
);
3643 /* Tell the target what to do with an ongoing tracing run if GDB
3644 disconnects for some reason. */
3647 set_disconnected_tracing (char *args
, int from_tty
,
3648 struct cmd_list_element
*c
)
3650 target_set_disconnected_tracing (disconnected_tracing
);
3654 set_circular_trace_buffer (char *args
, int from_tty
,
3655 struct cmd_list_element
*c
)
3657 target_set_circular_trace_buffer (circular_trace_buffer
);
3661 set_trace_buffer_size (char *args
, int from_tty
,
3662 struct cmd_list_element
*c
)
3664 target_set_trace_buffer_size (trace_buffer_size
);
3668 set_trace_user (char *args
, int from_tty
,
3669 struct cmd_list_element
*c
)
3673 ret
= target_set_trace_notes (trace_user
, NULL
, NULL
);
3676 warning (_("Target does not support trace notes, user ignored"));
3680 set_trace_notes (char *args
, int from_tty
,
3681 struct cmd_list_element
*c
)
3685 ret
= target_set_trace_notes (NULL
, trace_notes
, NULL
);
3688 warning (_("Target does not support trace notes, note ignored"));
3692 set_trace_stop_notes (char *args
, int from_tty
,
3693 struct cmd_list_element
*c
)
3697 ret
= target_set_trace_notes (NULL
, NULL
, trace_stop_notes
);
3700 warning (_("Target does not support trace notes, stop note ignored"));
3703 /* Convert the memory pointed to by mem into hex, placing result in buf.
3704 * Return a pointer to the last char put in buf (null)
3705 * "stolen" from sparc-stub.c
3708 static const char hexchars
[] = "0123456789abcdef";
3711 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
3719 *buf
++ = hexchars
[ch
>> 4];
3720 *buf
++ = hexchars
[ch
& 0xf];
3729 get_traceframe_number (void)
3731 return traceframe_number
;
3735 get_tracepoint_number (void)
3737 return tracepoint_number
;
3740 /* Make the traceframe NUM be the current trace frame. Does nothing
3741 if NUM is already current. */
3744 set_current_traceframe (int num
)
3748 if (traceframe_number
== num
)
3750 /* Nothing to do. */
3754 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
3757 warning (_("could not change traceframe"));
3759 set_traceframe_num (newnum
);
3761 /* Changing the traceframe changes our view of registers and of the
3763 registers_changed ();
3765 clear_traceframe_info ();
3768 /* Make the traceframe NUM be the current trace frame, and do nothing
3772 set_traceframe_number (int num
)
3774 traceframe_number
= num
;
3777 /* A cleanup used when switching away and back from tfind mode. */
3779 struct current_traceframe_cleanup
3781 /* The traceframe we were inspecting. */
3782 int traceframe_number
;
3786 do_restore_current_traceframe_cleanup (void *arg
)
3788 struct current_traceframe_cleanup
*old
= arg
;
3790 set_current_traceframe (old
->traceframe_number
);
3794 restore_current_traceframe_cleanup_dtor (void *arg
)
3796 struct current_traceframe_cleanup
*old
= arg
;
3802 make_cleanup_restore_current_traceframe (void)
3804 struct current_traceframe_cleanup
*old
;
3806 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
3807 old
->traceframe_number
= traceframe_number
;
3809 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
3810 restore_current_traceframe_cleanup_dtor
);
3814 make_cleanup_restore_traceframe_number (void)
3816 return make_cleanup_restore_integer (&traceframe_number
);
3819 /* Given a number and address, return an uploaded tracepoint with that
3820 number, creating if necessary. */
3822 struct uploaded_tp
*
3823 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
3825 struct uploaded_tp
*utp
;
3827 for (utp
= *utpp
; utp
; utp
= utp
->next
)
3828 if (utp
->number
== num
&& utp
->addr
== addr
)
3830 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
3831 memset (utp
, 0, sizeof (struct uploaded_tp
));
3834 utp
->actions
= NULL
;
3835 utp
->step_actions
= NULL
;
3836 utp
->cmd_strings
= NULL
;
3843 free_uploaded_tps (struct uploaded_tp
**utpp
)
3845 struct uploaded_tp
*next_one
;
3849 next_one
= (*utpp
)->next
;
3855 /* Given a number and address, return an uploaded tracepoint with that
3856 number, creating if necessary. */
3858 struct uploaded_tsv
*
3859 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
3861 struct uploaded_tsv
*utsv
;
3863 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
3864 if (utsv
->number
== num
)
3866 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
3867 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
3869 utsv
->next
= *utsvp
;
3875 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
3877 struct uploaded_tsv
*next_one
;
3881 next_one
= (*utsvp
)->next
;
3887 /* FIXME this function is heuristic and will miss the cases where the
3888 conditional is semantically identical but differs in whitespace,
3889 such as "x == 0" vs "x==0". */
3892 cond_string_is_same (char *str1
, char *str2
)
3894 if (str1
== NULL
|| str2
== NULL
)
3895 return (str1
== str2
);
3897 return (strcmp (str1
, str2
) == 0);
3900 /* Look for an existing tracepoint that seems similar enough to the
3901 uploaded one. Enablement isn't compared, because the user can
3902 toggle that freely, and may have done so in anticipation of the
3903 next trace run. Return the location of matched tracepoint. */
3905 static struct bp_location
*
3906 find_matching_tracepoint_location (struct uploaded_tp
*utp
)
3908 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
3910 struct breakpoint
*b
;
3911 struct bp_location
*loc
;
3913 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
3915 struct tracepoint
*t
= (struct tracepoint
*) b
;
3917 if (b
->type
== utp
->type
3918 && t
->step_count
== utp
->step
3919 && t
->pass_count
== utp
->pass
3920 && cond_string_is_same (t
->base
.cond_string
, utp
->cond_string
)
3921 /* FIXME also test actions. */
3924 /* Scan the locations for an address match. */
3925 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
3927 if (loc
->address
== utp
->addr
)
3935 /* Given a list of tracepoints uploaded from a target, attempt to
3936 match them up with existing tracepoints, and create new ones if not
3940 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
3942 struct uploaded_tp
*utp
;
3943 /* A set of tracepoints which are modified. */
3944 VEC(breakpoint_p
) *modified_tp
= NULL
;
3946 struct breakpoint
*b
;
3948 /* Look for GDB tracepoints that match up with our uploaded versions. */
3949 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
3951 struct bp_location
*loc
;
3952 struct tracepoint
*t
;
3954 loc
= find_matching_tracepoint_location (utp
);
3959 /* Mark this location as already inserted. */
3961 t
= (struct tracepoint
*) loc
->owner
;
3962 printf_filtered (_("Assuming tracepoint %d is same "
3963 "as target's tracepoint %d at %s.\n"),
3964 loc
->owner
->number
, utp
->number
,
3965 paddress (loc
->gdbarch
, utp
->addr
));
3967 /* The tracepoint LOC->owner was modified (the location LOC
3968 was marked as inserted in the target). Save it in
3969 MODIFIED_TP if not there yet. The 'breakpoint-modified'
3970 observers will be notified later once for each tracepoint
3971 saved in MODIFIED_TP. */
3973 VEC_iterate (breakpoint_p
, modified_tp
, ix
, b
);
3975 if (b
== loc
->owner
)
3981 VEC_safe_push (breakpoint_p
, modified_tp
, loc
->owner
);
3985 t
= create_tracepoint_from_upload (utp
);
3987 printf_filtered (_("Created tracepoint %d for "
3988 "target's tracepoint %d at %s.\n"),
3989 t
->base
.number
, utp
->number
,
3990 paddress (get_current_arch (), utp
->addr
));
3992 printf_filtered (_("Failed to create tracepoint for target's "
3993 "tracepoint %d at %s, skipping it.\n"),
3995 paddress (get_current_arch (), utp
->addr
));
3997 /* Whether found or created, record the number used by the
3998 target, to help with mapping target tracepoints back to their
3999 counterparts here. */
4001 t
->number_on_target
= utp
->number
;
4004 /* Notify 'breakpoint-modified' observer that at least one of B's
4005 locations was changed. */
4006 for (ix
= 0; VEC_iterate (breakpoint_p
, modified_tp
, ix
, b
); ix
++)
4007 observer_notify_breakpoint_modified (b
);
4009 VEC_free (breakpoint_p
, modified_tp
);
4010 free_uploaded_tps (uploaded_tps
);
4013 /* Trace state variables don't have much to identify them beyond their
4014 name, so just use that to detect matches. */
4016 static struct trace_state_variable
*
4017 find_matching_tsv (struct uploaded_tsv
*utsv
)
4022 return find_trace_state_variable (utsv
->name
);
4025 static struct trace_state_variable
*
4026 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
4028 const char *namebase
;
4031 struct trace_state_variable
*tsv
;
4032 struct cleanup
*old_chain
;
4036 namebase
= utsv
->name
;
4037 buf
= xstrprintf ("%s", namebase
);
4042 buf
= xstrprintf ("%s_%d", namebase
, try_num
++);
4045 /* Fish for a name that is not in use. */
4046 /* (should check against all internal vars?) */
4047 while (find_trace_state_variable (buf
))
4050 buf
= xstrprintf ("%s_%d", namebase
, try_num
++);
4053 old_chain
= make_cleanup (xfree
, buf
);
4055 /* We have an available name, create the variable. */
4056 tsv
= create_trace_state_variable (buf
);
4057 tsv
->initial_value
= utsv
->initial_value
;
4058 tsv
->builtin
= utsv
->builtin
;
4060 observer_notify_tsv_created (tsv
);
4062 do_cleanups (old_chain
);
4067 /* Given a list of uploaded trace state variables, try to match them
4068 up with existing variables, or create additional ones. */
4071 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
4074 struct uploaded_tsv
*utsv
;
4075 struct trace_state_variable
*tsv
;
4078 /* Most likely some numbers will have to be reassigned as part of
4079 the merge, so clear them all in anticipation. */
4080 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
4083 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
4085 tsv
= find_matching_tsv (utsv
);
4089 printf_filtered (_("Assuming trace state variable $%s "
4090 "is same as target's variable %d.\n"),
4091 tsv
->name
, utsv
->number
);
4095 tsv
= create_tsv_from_upload (utsv
);
4097 printf_filtered (_("Created trace state variable "
4098 "$%s for target's variable %d.\n"),
4099 tsv
->name
, utsv
->number
);
4101 /* Give precedence to numberings that come from the target. */
4103 tsv
->number
= utsv
->number
;
4106 /* Renumber everything that didn't get a target-assigned number. */
4108 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
4109 if (tsv
->number
> highest
)
4110 highest
= tsv
->number
;
4113 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
4114 if (tsv
->number
== 0)
4115 tsv
->number
= highest
++;
4117 free_uploaded_tsvs (uploaded_tsvs
);
4120 /* target tfile command */
4122 static struct target_ops tfile_ops
;
4124 /* Fill in tfile_ops with its defined operations and properties. */
4126 #define TRACE_HEADER_SIZE 8
4128 static char *trace_filename
;
4129 static int trace_fd
= -1;
4130 static off_t trace_frames_offset
;
4131 static off_t cur_offset
;
4132 static int cur_data_size
;
4133 int trace_regblock_size
;
4135 static void tfile_interp_line (char *line
,
4136 struct uploaded_tp
**utpp
,
4137 struct uploaded_tsv
**utsvp
);
4139 /* Read SIZE bytes into READBUF from the trace frame, starting at
4140 TRACE_FD's current position. Note that this call `read'
4141 underneath, hence it advances the file's seek position. Throws an
4142 error if the `read' syscall fails, or less than SIZE bytes are
4146 tfile_read (gdb_byte
*readbuf
, int size
)
4150 gotten
= read (trace_fd
, readbuf
, size
);
4152 perror_with_name (trace_filename
);
4153 else if (gotten
< size
)
4154 error (_("Premature end of file while reading trace file"));
4158 tfile_open (char *filename
, int from_tty
)
4160 volatile struct gdb_exception ex
;
4162 struct cleanup
*old_chain
;
4165 char header
[TRACE_HEADER_SIZE
];
4166 char linebuf
[1000]; /* Should be max remote packet size or so. */
4169 struct trace_status
*ts
;
4170 struct uploaded_tp
*uploaded_tps
= NULL
;
4171 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4173 target_preopen (from_tty
);
4175 error (_("No trace file specified."));
4177 filename
= tilde_expand (filename
);
4178 if (!IS_ABSOLUTE_PATH(filename
))
4180 temp
= concat (current_directory
, "/", filename
, (char *) NULL
);
4185 old_chain
= make_cleanup (xfree
, filename
);
4187 flags
= O_BINARY
| O_LARGEFILE
;
4189 scratch_chan
= open (filename
, flags
, 0);
4190 if (scratch_chan
< 0)
4191 perror_with_name (filename
);
4193 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
4195 discard_cleanups (old_chain
); /* Don't free filename any more. */
4196 unpush_target (&tfile_ops
);
4198 trace_filename
= xstrdup (filename
);
4199 trace_fd
= scratch_chan
;
4202 /* Read the file header and test for validity. */
4203 tfile_read ((gdb_byte
*) &header
, TRACE_HEADER_SIZE
);
4205 bytes
+= TRACE_HEADER_SIZE
;
4206 if (!(header
[0] == 0x7f
4207 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
4208 error (_("File is not a valid trace file."));
4210 push_target (&tfile_ops
);
4212 trace_regblock_size
= 0;
4213 ts
= current_trace_status ();
4214 /* We know we're working with a file. Record its name. */
4215 ts
->filename
= trace_filename
;
4216 /* Set defaults in case there is no status line. */
4217 ts
->running_known
= 0;
4218 ts
->stop_reason
= trace_stop_reason_unknown
;
4219 ts
->traceframe_count
= -1;
4220 ts
->buffer_free
= 0;
4221 ts
->disconnected_tracing
= 0;
4222 ts
->circular_buffer
= 0;
4224 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4226 /* Read through a section of newline-terminated lines that
4227 define things like tracepoints. */
4231 tfile_read (&byte
, 1);
4236 /* Empty line marks end of the definition section. */
4241 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
4244 linebuf
[i
++] = byte
;
4246 error (_("Excessively long lines in trace file"));
4249 /* Record the starting offset of the binary trace data. */
4250 trace_frames_offset
= bytes
;
4252 /* If we don't have a blocksize, we can't interpret the
4254 if (trace_regblock_size
== 0)
4255 error (_("No register block size recorded in trace file"));
4259 /* Pop the partially set up target. */
4261 throw_exception (ex
);
4264 inferior_appeared (current_inferior (), TFILE_PID
);
4265 inferior_ptid
= pid_to_ptid (TFILE_PID
);
4266 add_thread_silent (inferior_ptid
);
4268 if (ts
->traceframe_count
<= 0)
4269 warning (_("No traceframes present in this file."));
4271 /* Add the file's tracepoints and variables into the current mix. */
4273 /* Get trace state variables first, they may be checked when parsing
4274 uploaded commands. */
4275 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4277 merge_uploaded_tracepoints (&uploaded_tps
);
4279 post_create_inferior (&tfile_ops
, from_tty
);
4282 /* Interpret the given line from the definitions part of the trace
4286 tfile_interp_line (char *line
,
4287 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
4291 if (strncmp (p
, "R ", strlen ("R ")) == 0)
4294 trace_regblock_size
= strtol (p
, &p
, 16);
4296 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
4298 p
+= strlen ("status ");
4299 parse_trace_status (p
, current_trace_status ());
4301 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
4303 p
+= strlen ("tp ");
4304 parse_tracepoint_definition (p
, utpp
);
4306 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
4308 p
+= strlen ("tsv ");
4309 parse_tsv_definition (p
, utsvp
);
4312 warning (_("Ignoring trace file definition \"%s\""), line
);
4315 /* Parse the part of trace status syntax that is shared between
4316 the remote protocol and the trace file reader. */
4319 parse_trace_status (char *line
, struct trace_status
*ts
)
4321 char *p
= line
, *p1
, *p2
, *p3
, *p_temp
;
4325 ts
->running_known
= 1;
4326 ts
->running
= (*p
++ == '1');
4327 ts
->stop_reason
= trace_stop_reason_unknown
;
4328 xfree (ts
->stop_desc
);
4329 ts
->stop_desc
= NULL
;
4330 ts
->traceframe_count
= -1;
4331 ts
->traceframes_created
= -1;
4332 ts
->buffer_free
= -1;
4333 ts
->buffer_size
= -1;
4334 ts
->disconnected_tracing
= 0;
4335 ts
->circular_buffer
= 0;
4336 xfree (ts
->user_name
);
4337 ts
->user_name
= NULL
;
4340 ts
->start_time
= ts
->stop_time
= 0;
4344 p1
= strchr (p
, ':');
4346 error (_("Malformed trace status, at %s\n\
4347 Status line: '%s'\n"), p
, line
);
4348 p3
= strchr (p
, ';');
4350 p3
= p
+ strlen (p
);
4351 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
4353 p
= unpack_varlen_hex (++p1
, &val
);
4354 ts
->stop_reason
= trace_buffer_full
;
4356 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
4358 p
= unpack_varlen_hex (++p1
, &val
);
4359 ts
->stop_reason
= trace_never_run
;
4361 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
],
4364 p
= unpack_varlen_hex (++p1
, &val
);
4365 ts
->stop_reason
= tracepoint_passcount
;
4366 ts
->stopping_tracepoint
= val
;
4368 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
4370 p2
= strchr (++p1
, ':');
4378 ts
->stop_desc
= xmalloc (strlen (line
));
4379 end
= hex2bin (p1
, ts
->stop_desc
, (p2
- p1
) / 2);
4380 ts
->stop_desc
[end
] = '\0';
4383 ts
->stop_desc
= xstrdup ("");
4385 p
= unpack_varlen_hex (++p2
, &val
);
4386 ts
->stop_reason
= tstop_command
;
4388 else if (strncmp (p
, stop_reason_names
[trace_disconnected
], p1
- p
) == 0)
4390 p
= unpack_varlen_hex (++p1
, &val
);
4391 ts
->stop_reason
= trace_disconnected
;
4393 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
4395 p2
= strchr (++p1
, ':');
4398 ts
->stop_desc
= xmalloc ((p2
- p1
) / 2 + 1);
4399 end
= hex2bin (p1
, ts
->stop_desc
, (p2
- p1
) / 2);
4400 ts
->stop_desc
[end
] = '\0';
4403 ts
->stop_desc
= xstrdup ("");
4405 p
= unpack_varlen_hex (++p2
, &val
);
4406 ts
->stopping_tracepoint
= val
;
4407 ts
->stop_reason
= tracepoint_error
;
4409 else if (strncmp (p
, "tframes", p1
- p
) == 0)
4411 p
= unpack_varlen_hex (++p1
, &val
);
4412 ts
->traceframe_count
= val
;
4414 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
4416 p
= unpack_varlen_hex (++p1
, &val
);
4417 ts
->traceframes_created
= val
;
4419 else if (strncmp (p
, "tfree", p1
- p
) == 0)
4421 p
= unpack_varlen_hex (++p1
, &val
);
4422 ts
->buffer_free
= val
;
4424 else if (strncmp (p
, "tsize", p1
- p
) == 0)
4426 p
= unpack_varlen_hex (++p1
, &val
);
4427 ts
->buffer_size
= val
;
4429 else if (strncmp (p
, "disconn", p1
- p
) == 0)
4431 p
= unpack_varlen_hex (++p1
, &val
);
4432 ts
->disconnected_tracing
= val
;
4434 else if (strncmp (p
, "circular", p1
- p
) == 0)
4436 p
= unpack_varlen_hex (++p1
, &val
);
4437 ts
->circular_buffer
= val
;
4439 else if (strncmp (p
, "starttime", p1
- p
) == 0)
4441 p
= unpack_varlen_hex (++p1
, &val
);
4442 ts
->start_time
= val
;
4444 else if (strncmp (p
, "stoptime", p1
- p
) == 0)
4446 p
= unpack_varlen_hex (++p1
, &val
);
4447 ts
->stop_time
= val
;
4449 else if (strncmp (p
, "username", p1
- p
) == 0)
4452 ts
->user_name
= xmalloc (strlen (p
) / 2);
4453 end
= hex2bin (p1
, ts
->user_name
, (p3
- p1
) / 2);
4454 ts
->user_name
[end
] = '\0';
4457 else if (strncmp (p
, "notes", p1
- p
) == 0)
4460 ts
->notes
= xmalloc (strlen (p
) / 2);
4461 end
= hex2bin (p1
, ts
->notes
, (p3
- p1
) / 2);
4462 ts
->notes
[end
] = '\0';
4467 /* Silently skip unknown optional info. */
4468 p_temp
= strchr (p1
+ 1, ';');
4472 /* Must be at the end. */
4479 parse_tracepoint_status (char *p
, struct breakpoint
*bp
,
4480 struct uploaded_tp
*utp
)
4483 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
4485 p
= unpack_varlen_hex (p
, &uval
);
4487 tp
->base
.hit_count
+= uval
;
4489 utp
->hit_count
+= uval
;
4490 p
= unpack_varlen_hex (p
+ 1, &uval
);
4492 tp
->traceframe_usage
+= uval
;
4494 utp
->traceframe_usage
+= uval
;
4495 /* Ignore any extra, allowing for future extensions. */
4498 /* Given a line of text defining a part of a tracepoint, parse it into
4499 an "uploaded tracepoint". */
4502 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
4506 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
, start
;
4509 char *cond
, *srctype
, *buf
;
4510 struct uploaded_tp
*utp
= NULL
;
4513 /* Both tracepoint and action definitions start with the same number
4514 and address sequence. */
4516 p
= unpack_varlen_hex (p
, &num
);
4517 p
++; /* skip a colon */
4518 p
= unpack_varlen_hex (p
, &addr
);
4519 p
++; /* skip a colon */
4522 enabled
= (*p
++ == 'E');
4523 p
++; /* skip a colon */
4524 p
= unpack_varlen_hex (p
, &step
);
4525 p
++; /* skip a colon */
4526 p
= unpack_varlen_hex (p
, &pass
);
4527 type
= bp_tracepoint
;
4529 /* Thumb through optional fields. */
4532 p
++; /* skip a colon */
4535 type
= bp_fast_tracepoint
;
4537 p
= unpack_varlen_hex (p
, &orig_size
);
4541 type
= bp_static_tracepoint
;
4547 p
= unpack_varlen_hex (p
, &xlen
);
4548 p
++; /* skip a comma */
4549 cond
= (char *) xmalloc (2 * xlen
+ 1);
4550 strncpy (cond
, p
, 2 * xlen
);
4551 cond
[2 * xlen
] = '\0';
4555 warning (_("Unrecognized char '%c' in tracepoint "
4556 "definition, skipping rest"), *p
);
4558 utp
= get_uploaded_tp (num
, addr
, utpp
);
4560 utp
->enabled
= enabled
;
4565 else if (piece
== 'A')
4567 utp
= get_uploaded_tp (num
, addr
, utpp
);
4568 VEC_safe_push (char_ptr
, utp
->actions
, xstrdup (p
));
4570 else if (piece
== 'S')
4572 utp
= get_uploaded_tp (num
, addr
, utpp
);
4573 VEC_safe_push (char_ptr
, utp
->step_actions
, xstrdup (p
));
4575 else if (piece
== 'Z')
4577 /* Parse a chunk of source form definition. */
4578 utp
= get_uploaded_tp (num
, addr
, utpp
);
4580 p
= strchr (p
, ':');
4581 p
++; /* skip a colon */
4582 p
= unpack_varlen_hex (p
, &start
);
4583 p
++; /* skip a colon */
4584 p
= unpack_varlen_hex (p
, &xlen
);
4585 p
++; /* skip a colon */
4587 buf
= alloca (strlen (line
));
4589 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
4592 if (strncmp (srctype
, "at:", strlen ("at:")) == 0)
4593 utp
->at_string
= xstrdup (buf
);
4594 else if (strncmp (srctype
, "cond:", strlen ("cond:")) == 0)
4595 utp
->cond_string
= xstrdup (buf
);
4596 else if (strncmp (srctype
, "cmd:", strlen ("cmd:")) == 0)
4597 VEC_safe_push (char_ptr
, utp
->cmd_strings
, xstrdup (buf
));
4599 else if (piece
== 'V')
4601 utp
= get_uploaded_tp (num
, addr
, utpp
);
4603 parse_tracepoint_status (p
, NULL
, utp
);
4607 /* Don't error out, the target might be sending us optional
4608 info that we don't care about. */
4609 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece
);
4613 /* Convert a textual description of a trace state variable into an
4617 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
4620 ULONGEST num
, initval
, builtin
;
4622 struct uploaded_tsv
*utsv
= NULL
;
4624 buf
= alloca (strlen (line
));
4627 p
= unpack_varlen_hex (p
, &num
);
4628 p
++; /* skip a colon */
4629 p
= unpack_varlen_hex (p
, &initval
);
4630 p
++; /* skip a colon */
4631 p
= unpack_varlen_hex (p
, &builtin
);
4632 p
++; /* skip a colon */
4633 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
4636 utsv
= get_uploaded_tsv (num
, utsvp
);
4637 utsv
->initial_value
= initval
;
4638 utsv
->builtin
= builtin
;
4639 utsv
->name
= xstrdup (buf
);
4642 /* Close the trace file and generally clean up. */
4652 pid
= ptid_get_pid (inferior_ptid
);
4653 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff. */
4654 exit_inferior_silent (pid
);
4658 xfree (trace_filename
);
4659 trace_filename
= NULL
;
4663 tfile_files_info (struct target_ops
*t
)
4665 printf_filtered ("\t`%s'\n", trace_filename
);
4668 /* The trace status for a file is that tracing can never be run. */
4671 tfile_get_trace_status (struct trace_status
*ts
)
4673 /* Other bits of trace status were collected as part of opening the
4674 trace files, so nothing to do here. */
4680 tfile_get_tracepoint_status (struct breakpoint
*tp
, struct uploaded_tp
*utp
)
4682 /* Other bits of trace status were collected as part of opening the
4683 trace files, so nothing to do here. */
4686 /* Given the position of a traceframe in the file, figure out what
4687 address the frame was collected at. This would normally be the
4688 value of a collected PC register, but if not available, we
4692 tfile_get_traceframe_address (off_t tframe_offset
)
4696 struct tracepoint
*tp
;
4697 off_t saved_offset
= cur_offset
;
4699 /* FIXME dig pc out of collected registers. */
4701 /* Fall back to using tracepoint address. */
4702 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
4703 tfile_read ((gdb_byte
*) &tpnum
, 2);
4704 tpnum
= (short) extract_signed_integer ((gdb_byte
*) &tpnum
, 2,
4706 (target_gdbarch ()));
4708 tp
= get_tracepoint_by_number_on_target (tpnum
);
4709 /* FIXME this is a poor heuristic if multiple locations. */
4710 if (tp
&& tp
->base
.loc
)
4711 addr
= tp
->base
.loc
->address
;
4713 /* Restore our seek position. */
4714 cur_offset
= saved_offset
;
4715 lseek (trace_fd
, cur_offset
, SEEK_SET
);
4719 /* Given a type of search and some parameters, scan the collection of
4720 traceframes in the file looking for a match. When found, return
4721 both the traceframe and tracepoint number, otherwise -1 for
4725 tfile_trace_find (enum trace_find_type type
, int num
,
4726 CORE_ADDR addr1
, CORE_ADDR addr2
, int *tpp
)
4729 int tfnum
= 0, found
= 0;
4730 unsigned int data_size
;
4731 struct tracepoint
*tp
;
4732 off_t offset
, tframe_offset
;
4742 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
4743 offset
= trace_frames_offset
;
4746 tframe_offset
= offset
;
4747 tfile_read ((gdb_byte
*) &tpnum
, 2);
4748 tpnum
= (short) extract_signed_integer ((gdb_byte
*) &tpnum
, 2,
4750 (target_gdbarch ()));
4754 tfile_read ((gdb_byte
*) &data_size
, 4);
4755 data_size
= (unsigned int) extract_unsigned_integer
4756 ((gdb_byte
*) &data_size
, 4,
4757 gdbarch_byte_order (target_gdbarch ()));
4760 if (type
== tfind_number
)
4762 /* Looking for a specific trace frame. */
4768 /* Start from the _next_ trace frame. */
4769 if (tfnum
> traceframe_number
)
4774 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4775 if (tfaddr
== addr1
)
4779 tp
= get_tracepoint (num
);
4780 if (tp
&& tpnum
== tp
->number_on_target
)
4784 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4785 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
4789 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4790 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
4794 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
4803 cur_offset
= offset
;
4804 cur_data_size
= data_size
;
4808 /* Skip past the traceframe's data. */
4809 lseek (trace_fd
, data_size
, SEEK_CUR
);
4810 offset
+= data_size
;
4811 /* Update our own count of traceframes. */
4814 /* Did not find what we were looking for. */
4820 /* Prototype of the callback passed to tframe_walk_blocks. */
4821 typedef int (*walk_blocks_callback_func
) (char blocktype
, void *data
);
4823 /* Callback for traceframe_walk_blocks, used to find a given block
4824 type in a traceframe. */
4827 match_blocktype (char blocktype
, void *data
)
4829 char *wantedp
= data
;
4831 if (*wantedp
== blocktype
)
4837 /* Walk over all traceframe block starting at POS offset from
4838 CUR_OFFSET, and call CALLBACK for each block found, passing in DATA
4839 unmodified. If CALLBACK returns true, this returns the position in
4840 the traceframe where the block is found, relative to the start of
4841 the traceframe (cur_offset). Returns -1 if no callback call
4842 returned true, indicating that all blocks have been walked. */
4845 traceframe_walk_blocks (walk_blocks_callback_func callback
,
4846 int pos
, void *data
)
4848 /* Iterate through a traceframe's blocks, looking for a block of the
4851 lseek (trace_fd
, cur_offset
+ pos
, SEEK_SET
);
4852 while (pos
< cur_data_size
)
4854 unsigned short mlen
;
4857 tfile_read (&block_type
, 1);
4861 if ((*callback
) (block_type
, data
))
4867 lseek (trace_fd
, cur_offset
+ pos
+ trace_regblock_size
, SEEK_SET
);
4868 pos
+= trace_regblock_size
;
4871 lseek (trace_fd
, cur_offset
+ pos
+ 8, SEEK_SET
);
4872 tfile_read ((gdb_byte
*) &mlen
, 2);
4873 mlen
= (unsigned short)
4874 extract_unsigned_integer ((gdb_byte
*) &mlen
, 2,
4876 (target_gdbarch ()));
4877 lseek (trace_fd
, mlen
, SEEK_CUR
);
4878 pos
+= (8 + 2 + mlen
);
4881 lseek (trace_fd
, cur_offset
+ pos
+ 4 + 8, SEEK_SET
);
4885 error (_("Unknown block type '%c' (0x%x) in trace frame"),
4886 block_type
, block_type
);
4894 /* Convenience wrapper around traceframe_walk_blocks. Looks for the
4895 position offset of a block of type TYPE_WANTED in the current trace
4896 frame, starting at POS. Returns -1 if no such block was found. */
4899 traceframe_find_block_type (char type_wanted
, int pos
)
4901 return traceframe_walk_blocks (match_blocktype
, pos
, &type_wanted
);
4904 /* Look for a block of saved registers in the traceframe, and get the
4905 requested register from it. */
4908 tfile_fetch_registers (struct target_ops
*ops
,
4909 struct regcache
*regcache
, int regno
)
4911 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
4912 int offset
, regn
, regsize
, pc_regno
;
4915 /* An uninitialized reg size says we're not going to be
4916 successful at getting register blocks. */
4917 if (!trace_regblock_size
)
4920 regs
= alloca (trace_regblock_size
);
4922 if (traceframe_find_block_type ('R', 0) >= 0)
4924 tfile_read (regs
, trace_regblock_size
);
4926 /* Assume the block is laid out in GDB register number order,
4927 each register with the size that it has in GDB. */
4929 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
4931 regsize
= register_size (gdbarch
, regn
);
4932 /* Make sure we stay within block bounds. */
4933 if (offset
+ regsize
>= trace_regblock_size
)
4935 if (regcache_register_status (regcache
, regn
) == REG_UNKNOWN
)
4939 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
4942 else if (regno
== -1)
4944 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
4952 /* We get here if no register data has been found. Mark registers
4954 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
4955 regcache_raw_supply (regcache
, regn
, NULL
);
4957 /* We can often usefully guess that the PC is going to be the same
4958 as the address of the tracepoint. */
4959 pc_regno
= gdbarch_pc_regnum (gdbarch
);
4960 if (pc_regno
>= 0 && (regno
== -1 || regno
== pc_regno
))
4962 struct tracepoint
*tp
= get_tracepoint (tracepoint_number
);
4964 if (tp
&& tp
->base
.loc
)
4966 /* But don't try to guess if tracepoint is multi-location... */
4967 if (tp
->base
.loc
->next
)
4969 warning (_("Tracepoint %d has multiple "
4970 "locations, cannot infer $pc"),
4974 /* ... or does while-stepping. */
4975 if (tp
->step_count
> 0)
4977 warning (_("Tracepoint %d does while-stepping, "
4978 "cannot infer $pc"),
4983 store_unsigned_integer (regs
, register_size (gdbarch
, pc_regno
),
4984 gdbarch_byte_order (gdbarch
),
4985 tp
->base
.loc
->address
);
4986 regcache_raw_supply (regcache
, pc_regno
, regs
);
4992 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
4993 const char *annex
, gdb_byte
*readbuf
,
4994 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
4996 /* We're only doing regular memory for now. */
4997 if (object
!= TARGET_OBJECT_MEMORY
)
5000 if (readbuf
== NULL
)
5001 error (_("tfile_xfer_partial: trace file is read-only"));
5003 if (traceframe_number
!= -1)
5007 /* Iterate through the traceframe's blocks, looking for
5009 while ((pos
= traceframe_find_block_type ('M', pos
)) >= 0)
5011 ULONGEST maddr
, amt
;
5012 unsigned short mlen
;
5013 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch ());
5015 tfile_read ((gdb_byte
*) &maddr
, 8);
5016 maddr
= extract_unsigned_integer ((gdb_byte
*) &maddr
, 8,
5018 tfile_read ((gdb_byte
*) &mlen
, 2);
5019 mlen
= (unsigned short)
5020 extract_unsigned_integer ((gdb_byte
*) &mlen
, 2, byte_order
);
5022 /* If the block includes the first part of the desired
5023 range, return as much it has; GDB will re-request the
5024 remainder, which might be in a different block of this
5026 if (maddr
<= offset
&& offset
< (maddr
+ mlen
))
5028 amt
= (maddr
+ mlen
) - offset
;
5032 if (maddr
!= offset
)
5033 lseek (trace_fd
, offset
- maddr
, SEEK_CUR
);
5034 tfile_read (readbuf
, amt
);
5038 /* Skip over this block. */
5039 pos
+= (8 + 2 + mlen
);
5043 /* It's unduly pedantic to refuse to look at the executable for
5044 read-only pieces; so do the equivalent of readonly regions aka
5046 /* FIXME account for relocation at some point. */
5053 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5055 if ((s
->flags
& SEC_LOAD
) == 0
5056 || (s
->flags
& SEC_READONLY
) == 0)
5060 size
= bfd_get_section_size (s
);
5061 if (vma
<= offset
&& offset
< (vma
+ size
))
5065 amt
= (vma
+ size
) - offset
;
5069 amt
= bfd_get_section_contents (exec_bfd
, s
,
5070 readbuf
, offset
- vma
, amt
);
5076 /* Indicate failure to find the requested memory block. */
5080 /* Iterate through the blocks of a trace frame, looking for a 'V'
5081 block with a matching tsv number. */
5084 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
5089 /* Iterate over blocks in current frame and find the last 'V'
5090 block in which tsv number is TSVNUM. In one trace frame, there
5091 may be multiple 'V' blocks created for a given trace variable,
5092 and the last matched 'V' block contains the updated value. */
5094 while ((pos
= traceframe_find_block_type ('V', pos
)) >= 0)
5098 tfile_read ((gdb_byte
*) &vnum
, 4);
5099 vnum
= (int) extract_signed_integer ((gdb_byte
*) &vnum
, 4,
5101 (target_gdbarch ()));
5104 tfile_read ((gdb_byte
*) val
, 8);
5105 *val
= extract_signed_integer ((gdb_byte
*) val
, 8,
5107 (target_gdbarch ()));
5117 tfile_has_all_memory (struct target_ops
*ops
)
5123 tfile_has_memory (struct target_ops
*ops
)
5129 tfile_has_stack (struct target_ops
*ops
)
5131 return traceframe_number
!= -1;
5135 tfile_has_registers (struct target_ops
*ops
)
5137 return traceframe_number
!= -1;
5141 tfile_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
5146 /* Callback for traceframe_walk_blocks. Builds a traceframe_info
5147 object for the tfile target's current traceframe. */
5150 build_traceframe_info (char blocktype
, void *data
)
5152 struct traceframe_info
*info
= data
;
5158 struct mem_range
*r
;
5160 unsigned short mlen
;
5162 tfile_read ((gdb_byte
*) &maddr
, 8);
5163 maddr
= extract_unsigned_integer ((gdb_byte
*) &maddr
, 8,
5165 (target_gdbarch ()));
5166 tfile_read ((gdb_byte
*) &mlen
, 2);
5167 mlen
= (unsigned short)
5168 extract_unsigned_integer ((gdb_byte
*) &mlen
,
5169 2, gdbarch_byte_order
5170 (target_gdbarch ()));
5172 r
= VEC_safe_push (mem_range_s
, info
->memory
, NULL
);
5185 warning (_("Unhandled trace block type (%d) '%c ' "
5186 "while building trace frame info."),
5187 blocktype
, blocktype
);
5194 static struct traceframe_info
*
5195 tfile_traceframe_info (void)
5197 struct traceframe_info
*info
= XCNEW (struct traceframe_info
);
5199 traceframe_walk_blocks (build_traceframe_info
, 0, info
);
5204 init_tfile_ops (void)
5206 tfile_ops
.to_shortname
= "tfile";
5207 tfile_ops
.to_longname
= "Local trace dump file";
5209 = "Use a trace file as a target. Specify the filename of the trace file.";
5210 tfile_ops
.to_open
= tfile_open
;
5211 tfile_ops
.to_close
= tfile_close
;
5212 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
5213 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
5214 tfile_ops
.to_files_info
= tfile_files_info
;
5215 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
5216 tfile_ops
.to_get_tracepoint_status
= tfile_get_tracepoint_status
;
5217 tfile_ops
.to_trace_find
= tfile_trace_find
;
5218 tfile_ops
.to_get_trace_state_variable_value
5219 = tfile_get_trace_state_variable_value
;
5220 tfile_ops
.to_stratum
= process_stratum
;
5221 tfile_ops
.to_has_all_memory
= tfile_has_all_memory
;
5222 tfile_ops
.to_has_memory
= tfile_has_memory
;
5223 tfile_ops
.to_has_stack
= tfile_has_stack
;
5224 tfile_ops
.to_has_registers
= tfile_has_registers
;
5225 tfile_ops
.to_traceframe_info
= tfile_traceframe_info
;
5226 tfile_ops
.to_thread_alive
= tfile_thread_alive
;
5227 tfile_ops
.to_magic
= OPS_MAGIC
;
5231 free_current_marker (void *arg
)
5233 struct static_tracepoint_marker
**marker_p
= arg
;
5235 if (*marker_p
!= NULL
)
5237 release_static_tracepoint_marker (*marker_p
);
5244 /* Given a line of text defining a static tracepoint marker, parse it
5245 into a "static tracepoint marker" object. Throws an error is
5246 parsing fails. If PP is non-null, it points to one past the end of
5247 the parsed marker definition. */
5250 parse_static_tracepoint_marker_definition (char *line
, char **pp
,
5251 struct static_tracepoint_marker
*marker
)
5258 p
= unpack_varlen_hex (p
, &addr
);
5259 p
++; /* skip a colon */
5261 marker
->gdbarch
= target_gdbarch ();
5262 marker
->address
= (CORE_ADDR
) addr
;
5264 endp
= strchr (p
, ':');
5266 error (_("bad marker definition: %s"), line
);
5268 marker
->str_id
= xmalloc (endp
- p
+ 1);
5269 end
= hex2bin (p
, (gdb_byte
*) marker
->str_id
, (endp
- p
+ 1) / 2);
5270 marker
->str_id
[end
] = '\0';
5273 p
++; /* skip a colon */
5275 marker
->extra
= xmalloc (strlen (p
) + 1);
5276 end
= hex2bin (p
, (gdb_byte
*) marker
->extra
, strlen (p
) / 2);
5277 marker
->extra
[end
] = '\0';
5283 /* Release a static tracepoint marker's contents. Note that the
5284 object itself isn't released here. There objects are usually on
5288 release_static_tracepoint_marker (struct static_tracepoint_marker
*marker
)
5290 xfree (marker
->str_id
);
5291 marker
->str_id
= NULL
;
5294 /* Print MARKER to gdb_stdout. */
5297 print_one_static_tracepoint_marker (int count
,
5298 struct static_tracepoint_marker
*marker
)
5300 struct command_line
*l
;
5303 char wrap_indent
[80];
5304 char extra_field_indent
[80];
5305 struct ui_out
*uiout
= current_uiout
;
5306 struct cleanup
*bkpt_chain
;
5307 VEC(breakpoint_p
) *tracepoints
;
5309 struct symtab_and_line sal
;
5313 sal
.pc
= marker
->address
;
5315 tracepoints
= static_tracepoints_here (marker
->address
);
5317 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "marker");
5319 /* A counter field to help readability. This is not a stable
5321 ui_out_field_int (uiout
, "count", count
);
5323 ui_out_field_string (uiout
, "marker-id", marker
->str_id
);
5325 ui_out_field_fmt (uiout
, "enabled", "%c",
5326 !VEC_empty (breakpoint_p
, tracepoints
) ? 'y' : 'n');
5327 ui_out_spaces (uiout
, 2);
5329 strcpy (wrap_indent
, " ");
5331 if (gdbarch_addr_bit (marker
->gdbarch
) <= 32)
5332 strcat (wrap_indent
, " ");
5334 strcat (wrap_indent
, " ");
5336 strcpy (extra_field_indent
, " ");
5338 ui_out_field_core_addr (uiout
, "addr", marker
->gdbarch
, marker
->address
);
5340 sal
= find_pc_line (marker
->address
, 0);
5341 sym
= find_pc_sect_function (marker
->address
, NULL
);
5344 ui_out_text (uiout
, "in ");
5345 ui_out_field_string (uiout
, "func",
5346 SYMBOL_PRINT_NAME (sym
));
5347 ui_out_wrap_hint (uiout
, wrap_indent
);
5348 ui_out_text (uiout
, " at ");
5351 ui_out_field_skip (uiout
, "func");
5353 if (sal
.symtab
!= NULL
)
5355 ui_out_field_string (uiout
, "file",
5356 symtab_to_filename_for_display (sal
.symtab
));
5357 ui_out_text (uiout
, ":");
5359 if (ui_out_is_mi_like_p (uiout
))
5361 const char *fullname
= symtab_to_fullname (sal
.symtab
);
5363 ui_out_field_string (uiout
, "fullname", fullname
);
5366 ui_out_field_skip (uiout
, "fullname");
5368 ui_out_field_int (uiout
, "line", sal
.line
);
5372 ui_out_field_skip (uiout
, "fullname");
5373 ui_out_field_skip (uiout
, "line");
5376 ui_out_text (uiout
, "\n");
5377 ui_out_text (uiout
, extra_field_indent
);
5378 ui_out_text (uiout
, _("Data: \""));
5379 ui_out_field_string (uiout
, "extra-data", marker
->extra
);
5380 ui_out_text (uiout
, "\"\n");
5382 if (!VEC_empty (breakpoint_p
, tracepoints
))
5384 struct cleanup
*cleanup_chain
;
5386 struct breakpoint
*b
;
5388 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
,
5391 ui_out_text (uiout
, extra_field_indent
);
5392 ui_out_text (uiout
, _("Probed by static tracepoints: "));
5393 for (ix
= 0; VEC_iterate(breakpoint_p
, tracepoints
, ix
, b
); ix
++)
5396 ui_out_text (uiout
, ", ");
5397 ui_out_text (uiout
, "#");
5398 ui_out_field_int (uiout
, "tracepoint-id", b
->number
);
5401 do_cleanups (cleanup_chain
);
5403 if (ui_out_is_mi_like_p (uiout
))
5404 ui_out_field_int (uiout
, "number-of-tracepoints",
5405 VEC_length(breakpoint_p
, tracepoints
));
5407 ui_out_text (uiout
, "\n");
5409 VEC_free (breakpoint_p
, tracepoints
);
5411 do_cleanups (bkpt_chain
);
5415 info_static_tracepoint_markers_command (char *arg
, int from_tty
)
5417 VEC(static_tracepoint_marker_p
) *markers
;
5418 struct cleanup
*old_chain
;
5419 struct static_tracepoint_marker
*marker
;
5420 struct ui_out
*uiout
= current_uiout
;
5423 /* We don't have to check target_can_use_agent and agent's capability on
5424 static tracepoint here, in order to be compatible with older GDBserver.
5425 We don't check USE_AGENT is true or not, because static tracepoints
5426 don't work without in-process agent, so we don't bother users to type
5427 `set agent on' when to use static tracepoint. */
5430 = make_cleanup_ui_out_table_begin_end (uiout
, 5, -1,
5431 "StaticTracepointMarkersTable");
5433 ui_out_table_header (uiout
, 7, ui_left
, "counter", "Cnt");
5435 ui_out_table_header (uiout
, 40, ui_left
, "marker-id", "ID");
5437 ui_out_table_header (uiout
, 3, ui_left
, "enabled", "Enb");
5438 if (gdbarch_addr_bit (target_gdbarch ()) <= 32)
5439 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");
5441 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");
5442 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What");
5444 ui_out_table_body (uiout
);
5446 markers
= target_static_tracepoint_markers_by_strid (NULL
);
5447 make_cleanup (VEC_cleanup (static_tracepoint_marker_p
), &markers
);
5450 VEC_iterate (static_tracepoint_marker_p
,
5451 markers
, i
, marker
);
5454 print_one_static_tracepoint_marker (i
+ 1, marker
);
5455 release_static_tracepoint_marker (marker
);
5458 do_cleanups (old_chain
);
5461 /* The $_sdata convenience variable is a bit special. We don't know
5462 for sure type of the value until we actually have a chance to fetch
5463 the data --- the size of the object depends on what has been
5464 collected. We solve this by making $_sdata be an internalvar that
5465 creates a new value on access. */
5467 /* Return a new value with the correct type for the sdata object of
5468 the current trace frame. Return a void value if there's no object
5471 static struct value
*
5472 sdata_make_value (struct gdbarch
*gdbarch
, struct internalvar
*var
,
5478 /* We need to read the whole object before we know its size. */
5479 size
= target_read_alloc (¤t_target
,
5480 TARGET_OBJECT_STATIC_TRACE_DATA
,
5487 type
= init_vector_type (builtin_type (gdbarch
)->builtin_true_char
,
5489 v
= allocate_value (type
);
5490 memcpy (value_contents_raw (v
), buf
, size
);
5495 return allocate_value (builtin_type (gdbarch
)->builtin_void
);
5498 #if !defined(HAVE_LIBEXPAT)
5500 struct traceframe_info
*
5501 parse_traceframe_info (const char *tframe_info
)
5503 static int have_warned
;
5508 warning (_("Can not parse XML trace frame info; XML support "
5509 "was disabled at compile time"));
5515 #else /* HAVE_LIBEXPAT */
5517 #include "xml-support.h"
5519 /* Handle the start of a <memory> element. */
5522 traceframe_info_start_memory (struct gdb_xml_parser
*parser
,
5523 const struct gdb_xml_element
*element
,
5524 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
5526 struct traceframe_info
*info
= user_data
;
5527 struct mem_range
*r
= VEC_safe_push (mem_range_s
, info
->memory
, NULL
);
5528 ULONGEST
*start_p
, *length_p
;
5530 start_p
= xml_find_attribute (attributes
, "start")->value
;
5531 length_p
= xml_find_attribute (attributes
, "length")->value
;
5533 r
->start
= *start_p
;
5534 r
->length
= *length_p
;
5537 /* Discard the constructed trace frame info (if an error occurs). */
5540 free_result (void *p
)
5542 struct traceframe_info
*result
= p
;
5544 free_traceframe_info (result
);
5547 /* The allowed elements and attributes for an XML memory map. */
5549 static const struct gdb_xml_attribute memory_attributes
[] = {
5550 { "start", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
5551 { "length", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
5552 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
5555 static const struct gdb_xml_element traceframe_info_children
[] = {
5556 { "memory", memory_attributes
, NULL
,
5557 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
5558 traceframe_info_start_memory
, NULL
},
5559 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
5562 static const struct gdb_xml_element traceframe_info_elements
[] = {
5563 { "traceframe-info", NULL
, traceframe_info_children
, GDB_XML_EF_NONE
,
5565 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
5568 /* Parse a traceframe-info XML document. */
5570 struct traceframe_info
*
5571 parse_traceframe_info (const char *tframe_info
)
5573 struct traceframe_info
*result
;
5574 struct cleanup
*back_to
;
5576 result
= XCNEW (struct traceframe_info
);
5577 back_to
= make_cleanup (free_result
, result
);
5579 if (gdb_xml_parse_quick (_("trace frame info"),
5580 "traceframe-info.dtd", traceframe_info_elements
,
5581 tframe_info
, result
) == 0)
5583 /* Parsed successfully, keep the result. */
5584 discard_cleanups (back_to
);
5589 do_cleanups (back_to
);
5593 #endif /* HAVE_LIBEXPAT */
5595 /* Returns the traceframe_info object for the current traceframe.
5596 This is where we avoid re-fetching the object from the target if we
5597 already have it cached. */
5599 static struct traceframe_info
*
5600 get_traceframe_info (void)
5602 if (traceframe_info
== NULL
)
5603 traceframe_info
= target_traceframe_info ();
5605 return traceframe_info
;
5608 /* If the target supports the query, return in RESULT the set of
5609 collected memory in the current traceframe, found within the LEN
5610 bytes range starting at MEMADDR. Returns true if the target
5611 supports the query, otherwise returns false, and RESULT is left
5615 traceframe_available_memory (VEC(mem_range_s
) **result
,
5616 CORE_ADDR memaddr
, ULONGEST len
)
5618 struct traceframe_info
*info
= get_traceframe_info ();
5622 struct mem_range
*r
;
5627 for (i
= 0; VEC_iterate (mem_range_s
, info
->memory
, i
, r
); i
++)
5628 if (mem_ranges_overlap (r
->start
, r
->length
, memaddr
, len
))
5630 ULONGEST lo1
, hi1
, lo2
, hi2
;
5631 struct mem_range
*nr
;
5634 hi1
= memaddr
+ len
;
5637 hi2
= r
->start
+ r
->length
;
5639 nr
= VEC_safe_push (mem_range_s
, *result
, NULL
);
5641 nr
->start
= max (lo1
, lo2
);
5642 nr
->length
= min (hi1
, hi2
) - nr
->start
;
5645 normalize_mem_ranges (*result
);
5652 /* Implementation of `sdata' variable. */
5654 static const struct internalvar_funcs sdata_funcs
=
5661 /* module initialization */
5663 _initialize_tracepoint (void)
5665 struct cmd_list_element
*c
;
5667 /* Explicitly create without lookup, since that tries to create a
5668 value with a void typed value, and when we get here, gdbarch
5669 isn't initialized yet. At this point, we're quite sure there
5670 isn't another convenience variable of the same name. */
5671 create_internalvar_type_lazy ("_sdata", &sdata_funcs
, NULL
);
5673 traceframe_number
= -1;
5674 tracepoint_number
= -1;
5676 if (tracepoint_list
.list
== NULL
)
5678 tracepoint_list
.listsize
= 128;
5679 tracepoint_list
.list
= xmalloc
5680 (tracepoint_list
.listsize
* sizeof (struct memrange
));
5682 if (tracepoint_list
.aexpr_list
== NULL
)
5684 tracepoint_list
.aexpr_listsize
= 128;
5685 tracepoint_list
.aexpr_list
= xmalloc
5686 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
5689 if (stepping_list
.list
== NULL
)
5691 stepping_list
.listsize
= 128;
5692 stepping_list
.list
= xmalloc
5693 (stepping_list
.listsize
* sizeof (struct memrange
));
5696 if (stepping_list
.aexpr_list
== NULL
)
5698 stepping_list
.aexpr_listsize
= 128;
5699 stepping_list
.aexpr_list
= xmalloc
5700 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
5703 add_info ("scope", scope_info
,
5704 _("List the variables local to a scope"));
5706 add_cmd ("tracepoints", class_trace
, NULL
,
5707 _("Tracing of program execution without stopping the program."),
5710 add_com ("tdump", class_trace
, trace_dump_command
,
5711 _("Print everything collected at the current tracepoint."));
5713 add_com ("tsave", class_trace
, trace_save_command
, _("\
5714 Save the trace data to a file.\n\
5715 Use the '-ctf' option to save the data to CTF format.\n\
5716 Use the '-r' option to direct the target to save directly to the file,\n\
5717 using its own filesystem."));
5719 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
5720 Define a trace state variable.\n\
5721 Argument is a $-prefixed name, optionally followed\n\
5722 by '=' and an expression that sets the initial value\n\
5723 at the start of tracing."));
5724 set_cmd_completer (c
, expression_completer
);
5726 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
5727 Delete one or more trace state variables.\n\
5728 Arguments are the names of the variables to delete.\n\
5729 If no arguments are supplied, delete all variables."), &deletelist
);
5730 /* FIXME add a trace variable completer. */
5732 add_info ("tvariables", tvariables_info
, _("\
5733 Status of trace state variables and their values.\n\
5736 add_info ("static-tracepoint-markers",
5737 info_static_tracepoint_markers_command
, _("\
5738 List target static tracepoints markers.\n\
5741 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
5742 Select a trace frame;\n\
5743 No argument means forward by one frame; '-' means backward by one frame."),
5744 &tfindlist
, "tfind ", 1, &cmdlist
);
5746 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
5747 Select a trace frame whose PC is outside the given range (exclusive).\n\
5748 Usage: tfind outside addr1, addr2"),
5751 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
5752 Select a trace frame whose PC is in the given range (inclusive).\n\
5753 Usage: tfind range addr1,addr2"),
5756 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
5757 Select a trace frame by source line.\n\
5758 Argument can be a line number (with optional source file),\n\
5759 a function name, or '*' followed by an address.\n\
5760 Default argument is 'the next source line that was traced'."),
5763 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
5764 Select a trace frame by tracepoint number.\n\
5765 Default is the tracepoint for the current trace frame."),
5768 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
5769 Select a trace frame by PC.\n\
5770 Default is the current PC, or the PC of the current trace frame."),
5773 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
5774 De-select any trace frame and resume 'live' debugging."),
5777 add_alias_cmd ("none", "end", class_trace
, 0, &tfindlist
);
5779 add_cmd ("start", class_trace
, trace_find_start_command
,
5780 _("Select the first trace frame in the trace buffer."),
5783 add_com ("tstatus", class_trace
, trace_status_command
,
5784 _("Display the status of the current trace data collection."));
5786 add_com ("tstop", class_trace
, trace_stop_command
, _("\
5787 Stop trace data collection.\n\
5788 Usage: tstop [ <notes> ... ]\n\
5789 Any arguments supplied are recorded with the trace as a stop reason and\n\
5790 reported by tstatus (if the target supports trace notes)."));
5792 add_com ("tstart", class_trace
, trace_start_command
, _("\
5793 Start trace data collection.\n\
5794 Usage: tstart [ <notes> ... ]\n\
5795 Any arguments supplied are recorded with the trace as a note and\n\
5796 reported by tstatus (if the target supports trace notes)."));
5798 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
5799 Ends a list of commands or actions.\n\
5800 Several GDB commands allow you to enter a list of commands or actions.\n\
5801 Entering \"end\" on a line by itself is the normal way to terminate\n\
5803 Note: the \"end\" command cannot be used at the gdb prompt."));
5805 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
5806 Specify single-stepping behavior at a tracepoint.\n\
5807 Argument is number of instructions to trace in single-step mode\n\
5808 following the tracepoint. This command is normally followed by\n\
5809 one or more \"collect\" commands, to specify what to collect\n\
5810 while single-stepping.\n\n\
5811 Note: this command can only be used in a tracepoint \"actions\" list."));
5813 add_com_alias ("ws", "while-stepping", class_alias
, 0);
5814 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
5816 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
5817 Specify one or more data items to be collected at a tracepoint.\n\
5818 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
5819 collect all data (variables, registers) referenced by that expression.\n\
5820 Also accepts the following special arguments:\n\
5821 $regs -- all registers.\n\
5822 $args -- all function arguments.\n\
5823 $locals -- all variables local to the block/function scope.\n\
5824 $_sdata -- static tracepoint data (ignored for non-static tracepoints).\n\
5825 Note: this command can only be used in a tracepoint \"actions\" list."));
5827 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
5828 Specify one or more expressions to be evaluated at a tracepoint.\n\
5829 Accepts a comma-separated list of (one or more) expressions.\n\
5830 The result of each evaluation will be discarded.\n\
5831 Note: this command can only be used in a tracepoint \"actions\" list."));
5833 add_com ("actions", class_trace
, trace_actions_command
, _("\
5834 Specify the actions to be taken at a tracepoint.\n\
5835 Tracepoint actions may include collecting of specified data,\n\
5836 single-stepping, or enabling/disabling other tracepoints,\n\
5837 depending on target's capabilities."));
5839 default_collect
= xstrdup ("");
5840 add_setshow_string_cmd ("default-collect", class_trace
,
5841 &default_collect
, _("\
5842 Set the list of expressions to collect by default"), _("\
5843 Show the list of expressions to collect by default"), NULL
,
5845 &setlist
, &showlist
);
5847 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
5848 &disconnected_tracing
, _("\
5849 Set whether tracing continues after GDB disconnects."), _("\
5850 Show whether tracing continues after GDB disconnects."), _("\
5851 Use this to continue a tracing run even if GDB disconnects\n\
5852 or detaches from the target. You can reconnect later and look at\n\
5853 trace data collected in the meantime."),
5854 set_disconnected_tracing
,
5859 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
5860 &circular_trace_buffer
, _("\
5861 Set target's use of circular trace buffer."), _("\
5862 Show target's use of circular trace buffer."), _("\
5863 Use this to make the trace buffer into a circular buffer,\n\
5864 which will discard traceframes (oldest first) instead of filling\n\
5865 up and stopping the trace run."),
5866 set_circular_trace_buffer
,
5871 add_setshow_zuinteger_unlimited_cmd ("trace-buffer-size", no_class
,
5872 &trace_buffer_size
, _("\
5873 Set requested size of trace buffer."), _("\
5874 Show requested size of trace buffer."), _("\
5875 Use this to choose a size for the trace buffer. Some targets\n\
5876 may have fixed or limited buffer sizes. A value of -1 disables\n\
5877 any attempt to set the buffer size and lets the target choose."),
5878 set_trace_buffer_size
, NULL
,
5879 &setlist
, &showlist
);
5881 add_setshow_string_cmd ("trace-user", class_trace
,
5883 Set the user name to use for current and future trace runs"), _("\
5884 Show the user name to use for current and future trace runs"), NULL
,
5885 set_trace_user
, NULL
,
5886 &setlist
, &showlist
);
5888 add_setshow_string_cmd ("trace-notes", class_trace
,
5890 Set notes string to use for current and future trace runs"), _("\
5891 Show the notes string to use for current and future trace runs"), NULL
,
5892 set_trace_notes
, NULL
,
5893 &setlist
, &showlist
);
5895 add_setshow_string_cmd ("trace-stop-notes", class_trace
,
5896 &trace_stop_notes
, _("\
5897 Set notes string to use for future tstop commands"), _("\
5898 Show the notes string to use for future tstop commands"), NULL
,
5899 set_trace_stop_notes
, NULL
,
5900 &setlist
, &showlist
);
5904 add_target_with_completer (&tfile_ops
, filename_completer
);