1 /* Tracing functionality for remote targets in custom GDB protocol
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
4 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "arch-utils.h"
26 #include "expression.h"
31 #include "gdb_string.h"
33 #include "breakpoint.h"
34 #include "tracepoint.h"
37 #include "completer.h"
39 #include "dictionary.h"
41 #include "user-regs.h"
45 #include "filenames.h"
46 #include "gdbthread.h"
53 /* readline include files */
54 #include "readline/readline.h"
55 #include "readline/history.h"
57 /* readline defines this. */
68 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
69 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
71 extern void stop_tracing ();
73 /* Maximum length of an agent aexpression.
74 This accounts for the fact that packets are limited to 400 bytes
75 (which includes everything -- including the checksum), and assumes
76 the worst case of maximum length for each of the pieces of a
79 NOTE: expressions get mem2hex'ed otherwise this would be twice as
80 large. (400 - 31)/2 == 184 */
81 #define MAX_AGENT_EXPR_LEN 184
83 /* A hook used to notify the UI of tracepoint operations. */
85 void (*deprecated_trace_find_hook
) (char *arg
, int from_tty
);
86 void (*deprecated_trace_start_stop_hook
) (int start
, int from_tty
);
88 extern void (*deprecated_readline_begin_hook
) (char *, ...);
89 extern char *(*deprecated_readline_hook
) (char *);
90 extern void (*deprecated_readline_end_hook
) (void);
92 /* GDB commands implemented in other modules:
95 extern void output_command (char *, int);
100 This module defines the following debugger commands:
101 trace : set a tracepoint on a function, line, or address.
102 info trace : list all debugger-defined tracepoints.
103 delete trace : delete one or more tracepoints.
104 enable trace : enable one or more tracepoints.
105 disable trace : disable one or more tracepoints.
106 actions : specify actions to be taken at a tracepoint.
107 passcount : specify a pass count for a tracepoint.
108 tstart : start a trace experiment.
109 tstop : stop a trace experiment.
110 tstatus : query the status of a trace experiment.
111 tfind : find a trace frame in the trace buffer.
112 tdump : print everything collected at the current tracepoint.
113 save-tracepoints : write tracepoint setup into a file.
115 This module defines the following user-visible debugger variables:
116 $trace_frame : sequence number of trace frame currently being debugged.
117 $trace_line : source line of trace frame currently being debugged.
118 $trace_file : source file of trace frame currently being debugged.
119 $tracepoint : tracepoint number of trace frame currently being debugged.
123 /* ======= Important global variables: ======= */
125 /* The list of all trace state variables. We don't retain pointers to
126 any of these for any reason - API is by name or number only - so it
127 works to have a vector of objects. */
129 typedef struct trace_state_variable tsv_s
;
132 static VEC(tsv_s
) *tvariables
;
134 /* The next integer to assign to a variable. */
136 static int next_tsv_number
= 1;
138 /* Number of last traceframe collected. */
139 static int traceframe_number
;
141 /* Tracepoint for last traceframe collected. */
142 static int tracepoint_number
;
144 /* Symbol for function for last traceframe collected */
145 static struct symbol
*traceframe_fun
;
147 /* Symtab and line for last traceframe collected */
148 static struct symtab_and_line traceframe_sal
;
150 /* Tracing command lists */
151 static struct cmd_list_element
*tfindlist
;
153 /* List of expressions to collect by default at each tracepoint hit. */
154 char *default_collect
= "";
156 static int disconnected_tracing
;
158 /* This variable controls whether we ask the target for a linear or
159 circular trace buffer. */
161 static int circular_trace_buffer
;
163 /* ======= Important command functions: ======= */
164 static void trace_actions_command (char *, int);
165 static void trace_start_command (char *, int);
166 static void trace_stop_command (char *, int);
167 static void trace_status_command (char *, int);
168 static void trace_find_command (char *, int);
169 static void trace_find_pc_command (char *, int);
170 static void trace_find_tracepoint_command (char *, int);
171 static void trace_find_line_command (char *, int);
172 static void trace_find_range_command (char *, int);
173 static void trace_find_outside_command (char *, int);
174 static void trace_dump_command (char *, int);
176 /* support routines */
178 struct collection_list
;
179 static void add_aexpr (struct collection_list
*, struct agent_expr
*);
180 static char *mem2hex (gdb_byte
*, char *, int);
181 static void add_register (struct collection_list
*collection
,
184 extern void send_disconnected_tracing_value (int value
);
186 static void free_uploaded_tps (struct uploaded_tp
**utpp
);
187 static void free_uploaded_tsvs (struct uploaded_tsv
**utsvp
);
190 extern void _initialize_tracepoint (void);
192 static struct trace_status trace_status
;
194 char *stop_reason_names
[] = {
204 struct trace_status
*
205 current_trace_status ()
207 return &trace_status
;
210 /* Set traceframe number to NUM. */
212 set_traceframe_num (int num
)
214 traceframe_number
= num
;
215 set_internalvar_integer (lookup_internalvar ("trace_frame"), num
);
218 /* Set tracepoint number to NUM. */
220 set_tracepoint_num (int num
)
222 tracepoint_number
= num
;
223 set_internalvar_integer (lookup_internalvar ("tracepoint"), num
);
226 /* Set externally visible debug variables for querying/printing
227 the traceframe context (line, function, file) */
230 set_traceframe_context (struct frame_info
*trace_frame
)
234 if (trace_frame
== NULL
) /* Cease debugging any trace buffers. */
237 traceframe_sal
.pc
= traceframe_sal
.line
= 0;
238 traceframe_sal
.symtab
= NULL
;
239 clear_internalvar (lookup_internalvar ("trace_func"));
240 clear_internalvar (lookup_internalvar ("trace_file"));
241 set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
245 /* Save as globals for internal use. */
246 trace_pc
= get_frame_pc (trace_frame
);
247 traceframe_sal
= find_pc_line (trace_pc
, 0);
248 traceframe_fun
= find_pc_function (trace_pc
);
250 /* Save linenumber as "$trace_line", a debugger variable visible to
252 set_internalvar_integer (lookup_internalvar ("trace_line"),
253 traceframe_sal
.line
);
255 /* Save func name as "$trace_func", a debugger variable visible to
257 if (traceframe_fun
== NULL
258 || SYMBOL_LINKAGE_NAME (traceframe_fun
) == NULL
)
259 clear_internalvar (lookup_internalvar ("trace_func"));
261 set_internalvar_string (lookup_internalvar ("trace_func"),
262 SYMBOL_LINKAGE_NAME (traceframe_fun
));
264 /* Save file name as "$trace_file", a debugger variable visible to
266 if (traceframe_sal
.symtab
== NULL
267 || traceframe_sal
.symtab
->filename
== NULL
)
268 clear_internalvar (lookup_internalvar ("trace_file"));
270 set_internalvar_string (lookup_internalvar ("trace_file"),
271 traceframe_sal
.symtab
->filename
);
274 /* Create a new trace state variable with the given name. */
276 struct trace_state_variable
*
277 create_trace_state_variable (const char *name
)
279 struct trace_state_variable tsv
;
281 memset (&tsv
, 0, sizeof (tsv
));
282 tsv
.name
= xstrdup (name
);
283 tsv
.number
= next_tsv_number
++;
284 return VEC_safe_push (tsv_s
, tvariables
, &tsv
);
287 /* Look for a trace state variable of the given name. */
289 struct trace_state_variable
*
290 find_trace_state_variable (const char *name
)
292 struct trace_state_variable
*tsv
;
295 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
296 if (strcmp (name
, tsv
->name
) == 0)
303 delete_trace_state_variable (const char *name
)
305 struct trace_state_variable
*tsv
;
308 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
309 if (strcmp (name
, tsv
->name
) == 0)
311 xfree ((void *)tsv
->name
);
312 VEC_unordered_remove (tsv_s
, tvariables
, ix
);
316 warning (_("No trace variable named \"$%s\", not deleting"), name
);
319 /* The 'tvariable' command collects a name and optional expression to
320 evaluate into an initial value. */
323 trace_variable_command (char *args
, int from_tty
)
325 struct expression
*expr
;
326 struct cleanup
*old_chain
;
327 struct internalvar
*intvar
= NULL
;
329 struct trace_state_variable
*tsv
;
332 error_no_arg (_("trace state variable name"));
334 /* All the possible valid arguments are expressions. */
335 expr
= parse_expression (args
);
336 old_chain
= make_cleanup (free_current_contents
, &expr
);
338 if (expr
->nelts
== 0)
339 error (_("No expression?"));
341 /* Only allow two syntaxes; "$name" and "$name=value". */
342 if (expr
->elts
[0].opcode
== OP_INTERNALVAR
)
344 intvar
= expr
->elts
[1].internalvar
;
346 else if (expr
->elts
[0].opcode
== BINOP_ASSIGN
347 && expr
->elts
[1].opcode
== OP_INTERNALVAR
)
349 intvar
= expr
->elts
[2].internalvar
;
350 initval
= value_as_long (evaluate_subexpression_type (expr
, 4));
353 error (_("Syntax must be $NAME [ = EXPR ]"));
356 error (_("No name given"));
358 if (strlen (internalvar_name (intvar
)) <= 0)
359 error (_("Must supply a non-empty variable name"));
361 /* If the variable already exists, just change its initial value. */
362 tsv
= find_trace_state_variable (internalvar_name (intvar
));
365 tsv
->initial_value
= initval
;
366 printf_filtered (_("Trace state variable $%s now has initial value %s.\n"),
367 tsv
->name
, plongest (tsv
->initial_value
));
371 /* Create a new variable. */
372 tsv
= create_trace_state_variable (internalvar_name (intvar
));
373 tsv
->initial_value
= initval
;
375 printf_filtered (_("Trace state variable $%s created, with initial value %s.\n"),
376 tsv
->name
, plongest (tsv
->initial_value
));
378 do_cleanups (old_chain
);
382 delete_trace_variable_command (char *args
, int from_tty
)
386 struct cleanup
*back_to
;
387 struct trace_state_variable
*tsv
;
391 if (query (_("Delete all trace state variables? ")))
392 VEC_free (tsv_s
, tvariables
);
397 argv
= gdb_buildargv (args
);
398 back_to
= make_cleanup_freeargv (argv
);
400 for (i
= 0; argv
[i
] != NULL
; i
++)
403 delete_trace_state_variable (argv
[i
] + 1);
405 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv
[i
]);
408 do_cleanups (back_to
);
414 tvariables_info_1 (void)
416 struct trace_state_variable
*tsv
;
419 struct cleanup
*back_to
;
421 if (VEC_length (tsv_s
, tvariables
) == 0 && !ui_out_is_mi_like_p (uiout
))
423 printf_filtered (_("No trace state variables.\n"));
427 /* Try to acquire values from the target. */
428 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
, ++count
)
429 tsv
->value_known
= target_get_trace_state_variable_value (tsv
->number
,
432 back_to
= make_cleanup_ui_out_table_begin_end (uiout
, 3,
433 count
, "trace-variables");
434 ui_out_table_header (uiout
, 15, ui_left
, "name", "Name");
435 ui_out_table_header (uiout
, 11, ui_left
, "initial", "Initial");
436 ui_out_table_header (uiout
, 11, ui_left
, "current", "Current");
438 ui_out_table_body (uiout
);
440 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
442 struct cleanup
*back_to2
;
446 back_to2
= make_cleanup_ui_out_tuple_begin_end (uiout
, "variable");
448 name
= concat ("$", tsv
->name
, NULL
);
449 make_cleanup (xfree
, name
);
450 ui_out_field_string (uiout
, "name", name
);
451 ui_out_field_string (uiout
, "initial", plongest (tsv
->initial_value
));
453 if (tsv
->value_known
)
454 c
= plongest (tsv
->value
);
455 else if (ui_out_is_mi_like_p (uiout
))
456 /* For MI, we prefer not to use magic string constants, but rather
457 omit the field completely. The difference between unknown and
458 undefined does not seem important enough to represent. */
460 else if (current_trace_status ()->running
|| traceframe_number
>= 0)
461 /* The value is/was defined, but we don't have it. */
464 /* It is not meaningful to ask about the value. */
467 ui_out_field_string (uiout
, "current", c
);
468 ui_out_text (uiout
, "\n");
470 do_cleanups (back_to2
);
473 do_cleanups (back_to
);
476 /* List all the trace state variables. */
479 tvariables_info (char *args
, int from_tty
)
481 tvariables_info_1 ();
484 /* Stash definitions of tsvs into the given file. */
487 save_trace_state_variables (struct ui_file
*fp
)
489 struct trace_state_variable
*tsv
;
492 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
494 fprintf_unfiltered (fp
, "tvariable $%s", tsv
->name
);
495 if (tsv
->initial_value
)
496 fprintf_unfiltered (fp
, " = %s", plongest (tsv
->initial_value
));
497 fprintf_unfiltered (fp
, "\n");
501 /* ACTIONS functions: */
503 /* The three functions:
504 collect_pseudocommand,
505 while_stepping_pseudocommand, and
506 end_actions_pseudocommand
507 are placeholders for "commands" that are actually ONLY to be used
508 within a tracepoint action list. If the actual function is ever called,
509 it means that somebody issued the "command" at the top level,
510 which is always an error. */
513 end_actions_pseudocommand (char *args
, int from_tty
)
515 error (_("This command cannot be used at the top level."));
519 while_stepping_pseudocommand (char *args
, int from_tty
)
521 error (_("This command can only be used in a tracepoint actions list."));
525 collect_pseudocommand (char *args
, int from_tty
)
527 error (_("This command can only be used in a tracepoint actions list."));
531 teval_pseudocommand (char *args
, int from_tty
)
533 error (_("This command can only be used in a tracepoint actions list."));
536 /* Enter a list of actions for a tracepoint. */
538 trace_actions_command (char *args
, int from_tty
)
540 struct breakpoint
*t
;
541 struct command_line
*l
;
543 t
= get_tracepoint_by_number (&args
, 0, 1);
547 xstrprintf ("Enter actions for tracepoint %d, one per line.",
549 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
551 l
= read_command_lines (tmpbuf
, from_tty
, 1, check_tracepoint_command
, t
);
552 do_cleanups (cleanups
);
553 breakpoint_set_commands (t
, l
);
555 /* else just return */
558 /* Report the results of checking the agent expression, as errors or
562 report_agent_reqs_errors (struct agent_expr
*aexpr
, struct agent_reqs
*areqs
)
564 /* All of the "flaws" are serious bytecode generation issues that
565 should never occur. */
566 if (areqs
->flaw
!= agent_flaw_none
)
567 internal_error (__FILE__
, __LINE__
, _("expression is malformed"));
569 /* If analysis shows a stack underflow, GDB must have done something
570 badly wrong in its bytecode generation. */
571 if (areqs
->min_height
< 0)
572 internal_error (__FILE__
, __LINE__
,
573 _("expression has min height < 0"));
575 /* Issue this error if the stack is predicted to get too deep. The
576 limit is rather arbitrary; a better scheme might be for the
577 target to report how much stack it will have available. The
578 depth roughly corresponds to parenthesization, so a limit of 20
579 amounts to 20 levels of expression nesting, which is actually
580 a pretty big hairy expression. */
581 if (areqs
->max_height
> 20)
582 error (_("Expression is too complicated."));
585 /* worker function */
587 validate_actionline (char **line
, struct breakpoint
*t
)
589 struct cmd_list_element
*c
;
590 struct expression
*exp
= NULL
;
591 struct cleanup
*old_chain
= NULL
;
593 struct bp_location
*loc
;
594 struct agent_expr
*aexpr
;
595 struct agent_reqs areqs
;
597 /* if EOF is typed, *line is NULL */
601 for (p
= *line
; isspace ((int) *p
);)
604 /* Symbol lookup etc. */
605 if (*p
== '\0') /* empty line: just prompt for another line. */
608 if (*p
== '#') /* comment line */
611 c
= lookup_cmd (&p
, cmdlist
, "", -1, 1);
613 error (_("`%s' is not a tracepoint action, or is ambiguous."), p
);
615 if (cmd_cfunc_eq (c
, collect_pseudocommand
))
618 { /* repeat over a comma-separated list */
619 QUIT
; /* allow user to bail out with ^C */
620 while (isspace ((int) *p
))
623 if (*p
== '$') /* look for special pseudo-symbols */
625 if ((0 == strncasecmp ("reg", p
+ 1, 3)) ||
626 (0 == strncasecmp ("arg", p
+ 1, 3)) ||
627 (0 == strncasecmp ("loc", p
+ 1, 3)))
632 /* else fall thru, treat p as an expression and parse it! */
635 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
638 exp
= parse_exp_1 (&p
, block_for_pc (loc
->address
), 1);
639 old_chain
= make_cleanup (free_current_contents
, &exp
);
641 if (exp
->elts
[0].opcode
== OP_VAR_VALUE
)
643 if (SYMBOL_CLASS (exp
->elts
[2].symbol
) == LOC_CONST
)
645 error (_("constant `%s' (value %ld) will not be collected."),
646 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
),
647 SYMBOL_VALUE (exp
->elts
[2].symbol
));
649 else if (SYMBOL_CLASS (exp
->elts
[2].symbol
) == LOC_OPTIMIZED_OUT
)
651 error (_("`%s' is optimized away and cannot be collected."),
652 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
));
656 /* We have something to collect, make sure that the expr to
657 bytecode translator can handle it and that it's not too
659 aexpr
= gen_trace_for_expr (loc
->address
, exp
);
660 make_cleanup_free_agent_expr (aexpr
);
662 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
663 error (_("Expression is too complicated."));
665 ax_reqs (aexpr
, &areqs
);
666 (void) make_cleanup (xfree
, areqs
.reg_mask
);
668 report_agent_reqs_errors (aexpr
, &areqs
);
670 do_cleanups (old_chain
);
673 while (p
&& *p
++ == ',');
676 else if (cmd_cfunc_eq (c
, teval_pseudocommand
))
679 { /* repeat over a comma-separated list */
680 QUIT
; /* allow user to bail out with ^C */
681 while (isspace ((int) *p
))
685 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
688 /* Only expressions are allowed for this action. */
689 exp
= parse_exp_1 (&p
, block_for_pc (loc
->address
), 1);
690 old_chain
= make_cleanup (free_current_contents
, &exp
);
692 /* We have something to evaluate, make sure that the expr to
693 bytecode translator can handle it and that it's not too
695 aexpr
= gen_eval_for_expr (loc
->address
, exp
);
696 make_cleanup_free_agent_expr (aexpr
);
698 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
699 error (_("Expression is too complicated."));
701 ax_reqs (aexpr
, &areqs
);
702 (void) make_cleanup (xfree
, areqs
.reg_mask
);
704 report_agent_reqs_errors (aexpr
, &areqs
);
706 do_cleanups (old_chain
);
709 while (p
&& *p
++ == ',');
712 else if (cmd_cfunc_eq (c
, while_stepping_pseudocommand
))
714 char *steparg
; /* in case warning is necessary */
716 while (isspace ((int) *p
))
720 if (*p
== '\0' || (t
->step_count
= strtol (p
, &p
, 0)) == 0)
721 error (_("while-stepping step count `%s' is malformed."), *line
);
724 else if (cmd_cfunc_eq (c
, end_actions_pseudocommand
))
728 error (_("`%s' is not a supported tracepoint action."), *line
);
732 memrange_absolute
= -1
737 int type
; /* memrange_absolute for absolute memory range,
738 else basereg number */
739 bfd_signed_vma start
;
743 struct collection_list
745 unsigned char regs_mask
[32]; /* room for up to 256 regs */
748 struct memrange
*list
;
749 long aexpr_listsize
; /* size of array pointed to by expr_list elt */
751 struct agent_expr
**aexpr_list
;
754 tracepoint_list
, stepping_list
;
756 /* MEMRANGE functions: */
758 static int memrange_cmp (const void *, const void *);
760 /* compare memranges for qsort */
762 memrange_cmp (const void *va
, const void *vb
)
764 const struct memrange
*a
= va
, *b
= vb
;
766 if (a
->type
< b
->type
)
768 if (a
->type
> b
->type
)
770 if (a
->type
== memrange_absolute
)
772 if ((bfd_vma
) a
->start
< (bfd_vma
) b
->start
)
774 if ((bfd_vma
) a
->start
> (bfd_vma
) b
->start
)
779 if (a
->start
< b
->start
)
781 if (a
->start
> b
->start
)
787 /* Sort the memrange list using qsort, and merge adjacent memranges. */
789 memrange_sortmerge (struct collection_list
*memranges
)
793 qsort (memranges
->list
, memranges
->next_memrange
,
794 sizeof (struct memrange
), memrange_cmp
);
795 if (memranges
->next_memrange
> 0)
797 for (a
= 0, b
= 1; b
< memranges
->next_memrange
; b
++)
799 if (memranges
->list
[a
].type
== memranges
->list
[b
].type
&&
800 memranges
->list
[b
].start
- memranges
->list
[a
].end
<=
803 /* memrange b starts before memrange a ends; merge them. */
804 if (memranges
->list
[b
].end
> memranges
->list
[a
].end
)
805 memranges
->list
[a
].end
= memranges
->list
[b
].end
;
806 continue; /* next b, same a */
810 memcpy (&memranges
->list
[a
], &memranges
->list
[b
],
811 sizeof (struct memrange
));
813 memranges
->next_memrange
= a
+ 1;
817 /* Add a register to a collection list. */
819 add_register (struct collection_list
*collection
, unsigned int regno
)
822 printf_filtered ("collect register %d\n", regno
);
823 if (regno
>= (8 * sizeof (collection
->regs_mask
)))
824 error (_("Internal: register number %d too large for tracepoint"),
826 collection
->regs_mask
[regno
/ 8] |= 1 << (regno
% 8);
829 /* Add a memrange to a collection list */
831 add_memrange (struct collection_list
*memranges
,
832 int type
, bfd_signed_vma base
,
837 printf_filtered ("(%d,", type
);
839 printf_filtered (",%ld)\n", len
);
842 /* type: memrange_absolute == memory, other n == basereg */
843 memranges
->list
[memranges
->next_memrange
].type
= type
;
844 /* base: addr if memory, offset if reg relative. */
845 memranges
->list
[memranges
->next_memrange
].start
= base
;
846 /* len: we actually save end (base + len) for convenience */
847 memranges
->list
[memranges
->next_memrange
].end
= base
+ len
;
848 memranges
->next_memrange
++;
849 if (memranges
->next_memrange
>= memranges
->listsize
)
851 memranges
->listsize
*= 2;
852 memranges
->list
= xrealloc (memranges
->list
,
853 memranges
->listsize
);
856 if (type
!= memrange_absolute
) /* Better collect the base register! */
857 add_register (memranges
, type
);
860 /* Add a symbol to a collection list. */
862 collect_symbol (struct collection_list
*collect
,
864 struct gdbarch
*gdbarch
,
865 long frame_regno
, long frame_offset
,
870 bfd_signed_vma offset
;
871 int treat_as_expr
= 0;
873 len
= TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
)));
874 switch (SYMBOL_CLASS (sym
))
877 printf_filtered ("%s: don't know symbol class %d\n",
878 SYMBOL_PRINT_NAME (sym
),
882 printf_filtered ("constant %s (value %ld) will not be collected.\n",
883 SYMBOL_PRINT_NAME (sym
), SYMBOL_VALUE (sym
));
886 offset
= SYMBOL_VALUE_ADDRESS (sym
);
891 sprintf_vma (tmp
, offset
);
892 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
893 SYMBOL_PRINT_NAME (sym
), len
,
896 /* A struct may be a C++ class with static fields, go to general
897 expression handling. */
898 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
901 add_memrange (collect
, memrange_absolute
, offset
, len
);
904 reg
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
906 printf_filtered ("LOC_REG[parm] %s: ",
907 SYMBOL_PRINT_NAME (sym
));
908 add_register (collect
, reg
);
909 /* Check for doubles stored in two registers. */
910 /* FIXME: how about larger types stored in 3 or more regs? */
911 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FLT
&&
912 len
> register_size (gdbarch
, reg
))
913 add_register (collect
, reg
+ 1);
916 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
917 printf_filtered (" (will not collect %s)\n",
918 SYMBOL_PRINT_NAME (sym
));
922 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
925 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
926 SYMBOL_PRINT_NAME (sym
), len
);
928 printf_filtered (" from frame ptr reg %d\n", reg
);
930 add_memrange (collect
, reg
, offset
, len
);
932 case LOC_REGPARM_ADDR
:
933 reg
= SYMBOL_VALUE (sym
);
937 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
938 SYMBOL_PRINT_NAME (sym
), len
);
940 printf_filtered (" from reg %d\n", reg
);
942 add_memrange (collect
, reg
, offset
, len
);
946 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
949 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
950 SYMBOL_PRINT_NAME (sym
), len
);
952 printf_filtered (" from frame ptr reg %d\n", reg
);
954 add_memrange (collect
, reg
, offset
, len
);
961 case LOC_OPTIMIZED_OUT
:
962 printf_filtered ("%s has been optimized out of existence.\n",
963 SYMBOL_PRINT_NAME (sym
));
971 /* Expressions are the most general case. */
974 struct agent_expr
*aexpr
;
975 struct cleanup
*old_chain1
= NULL
;
976 struct agent_reqs areqs
;
978 aexpr
= gen_trace_for_var (scope
, gdbarch
, sym
);
980 /* It can happen that the symbol is recorded as a computed
981 location, but it's been optimized away and doesn't actually
982 have a location expression. */
985 printf_filtered ("%s has been optimized out of existence.\n",
986 SYMBOL_PRINT_NAME (sym
));
990 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
992 ax_reqs (aexpr
, &areqs
);
994 report_agent_reqs_errors (aexpr
, &areqs
);
996 discard_cleanups (old_chain1
);
997 add_aexpr (collect
, aexpr
);
999 /* take care of the registers */
1000 if (areqs
.reg_mask_len
> 0)
1004 for (ndx1
= 0; ndx1
< areqs
.reg_mask_len
; ndx1
++)
1006 QUIT
; /* allow user to bail out with ^C */
1007 if (areqs
.reg_mask
[ndx1
] != 0)
1009 /* assume chars have 8 bits */
1010 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1011 if (areqs
.reg_mask
[ndx1
] & (1 << ndx2
))
1012 /* it's used -- record it */
1013 add_register (collect
, ndx1
* 8 + ndx2
);
1020 /* Data to be passed around in the calls to the locals and args
1023 struct add_local_symbols_data
1025 struct collection_list
*collect
;
1026 struct gdbarch
*gdbarch
;
1033 /* The callback for the locals and args iterators */
1036 do_collect_symbol (const char *print_name
,
1040 struct add_local_symbols_data
*p
= cb_data
;
1042 collect_symbol (p
->collect
, sym
, p
->gdbarch
, p
->frame_regno
,
1043 p
->frame_offset
, p
->pc
);
1047 /* Add all locals (or args) symbols to collection list */
1049 add_local_symbols (struct collection_list
*collect
,
1050 struct gdbarch
*gdbarch
, CORE_ADDR pc
,
1051 long frame_regno
, long frame_offset
, int type
)
1053 struct block
*block
;
1054 struct add_local_symbols_data cb_data
;
1056 cb_data
.collect
= collect
;
1057 cb_data
.gdbarch
= gdbarch
;
1059 cb_data
.frame_regno
= frame_regno
;
1060 cb_data
.frame_offset
= frame_offset
;
1065 block
= block_for_pc (pc
);
1068 warning (_("Can't collect locals; "
1069 "no symbol table info available.\n"));
1073 iterate_over_block_local_vars (block
, do_collect_symbol
, &cb_data
);
1074 if (cb_data
.count
== 0)
1075 warning (_("No locals found in scope."));
1079 pc
= get_pc_function_start (pc
);
1080 block
= block_for_pc (pc
);
1083 warning (_("Can't collect args; no symbol table info available.\n"));
1087 iterate_over_block_arg_vars (block
, do_collect_symbol
, &cb_data
);
1088 if (cb_data
.count
== 0)
1089 warning (_("No args found in scope."));
1093 /* worker function */
1095 clear_collection_list (struct collection_list
*list
)
1099 list
->next_memrange
= 0;
1100 for (ndx
= 0; ndx
< list
->next_aexpr_elt
; ndx
++)
1102 free_agent_expr (list
->aexpr_list
[ndx
]);
1103 list
->aexpr_list
[ndx
] = NULL
;
1105 list
->next_aexpr_elt
= 0;
1106 memset (list
->regs_mask
, 0, sizeof (list
->regs_mask
));
1109 /* reduce a collection list to string form (for gdb protocol) */
1111 stringify_collection_list (struct collection_list
*list
, char *string
)
1113 char temp_buf
[2048];
1117 char *(*str_list
)[];
1121 count
= 1 + list
->next_memrange
+ list
->next_aexpr_elt
+ 1;
1122 str_list
= (char *(*)[]) xmalloc (count
* sizeof (char *));
1124 for (i
= sizeof (list
->regs_mask
) - 1; i
> 0; i
--)
1125 if (list
->regs_mask
[i
] != 0) /* skip leading zeroes in regs_mask */
1127 if (list
->regs_mask
[i
] != 0) /* prepare to send regs_mask to the stub */
1130 printf_filtered ("\nCollecting registers (mask): 0x");
1135 QUIT
; /* allow user to bail out with ^C */
1137 printf_filtered ("%02X", list
->regs_mask
[i
]);
1138 sprintf (end
, "%02X", list
->regs_mask
[i
]);
1141 (*str_list
)[ndx
] = xstrdup (temp_buf
);
1145 printf_filtered ("\n");
1146 if (list
->next_memrange
> 0 && info_verbose
)
1147 printf_filtered ("Collecting memranges: \n");
1148 for (i
= 0, count
= 0, end
= temp_buf
; i
< list
->next_memrange
; i
++)
1150 QUIT
; /* allow user to bail out with ^C */
1151 sprintf_vma (tmp2
, list
->list
[i
].start
);
1154 printf_filtered ("(%d, %s, %ld)\n",
1157 (long) (list
->list
[i
].end
- list
->list
[i
].start
));
1159 if (count
+ 27 > MAX_AGENT_EXPR_LEN
)
1161 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1168 bfd_signed_vma length
= list
->list
[i
].end
- list
->list
[i
].start
;
1170 /* The "%X" conversion specifier expects an unsigned argument,
1171 so passing -1 (memrange_absolute) to it directly gives you
1172 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1174 if (list
->list
[i
].type
== memrange_absolute
)
1175 sprintf (end
, "M-1,%s,%lX", tmp2
, (long) length
);
1177 sprintf (end
, "M%X,%s,%lX", list
->list
[i
].type
, tmp2
, (long) length
);
1180 count
+= strlen (end
);
1181 end
= temp_buf
+ count
;
1184 for (i
= 0; i
< list
->next_aexpr_elt
; i
++)
1186 QUIT
; /* allow user to bail out with ^C */
1187 if ((count
+ 10 + 2 * list
->aexpr_list
[i
]->len
) > MAX_AGENT_EXPR_LEN
)
1189 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1194 sprintf (end
, "X%08X,", list
->aexpr_list
[i
]->len
);
1195 end
+= 10; /* 'X' + 8 hex digits + ',' */
1198 end
= mem2hex (list
->aexpr_list
[i
]->buf
,
1199 end
, list
->aexpr_list
[i
]->len
);
1200 count
+= 2 * list
->aexpr_list
[i
]->len
;
1205 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1210 (*str_list
)[ndx
] = NULL
;
1223 encode_actions_1 (struct command_line
*action
,
1224 struct breakpoint
*t
,
1225 struct bp_location
*tloc
,
1227 LONGEST frame_offset
,
1228 struct collection_list
*collect
,
1229 struct collection_list
*stepping_list
)
1232 struct expression
*exp
= NULL
;
1233 struct command_line
*actions
;
1235 struct value
*tempval
;
1236 struct cmd_list_element
*cmd
;
1237 struct agent_expr
*aexpr
;
1239 for (; action
; action
= action
->next
)
1241 QUIT
; /* allow user to bail out with ^C */
1242 action_exp
= action
->line
;
1243 while (isspace ((int) *action_exp
))
1246 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
1248 error (_("Bad action list item: %s"), action_exp
);
1250 if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
1253 { /* repeat over a comma-separated list */
1254 QUIT
; /* allow user to bail out with ^C */
1255 while (isspace ((int) *action_exp
))
1258 if (0 == strncasecmp ("$reg", action_exp
, 4))
1260 for (i
= 0; i
< gdbarch_num_regs (t
->gdbarch
); i
++)
1261 add_register (collect
, i
);
1262 action_exp
= strchr (action_exp
, ','); /* more? */
1264 else if (0 == strncasecmp ("$arg", action_exp
, 4))
1266 add_local_symbols (collect
,
1272 action_exp
= strchr (action_exp
, ','); /* more? */
1274 else if (0 == strncasecmp ("$loc", action_exp
, 4))
1276 add_local_symbols (collect
,
1282 action_exp
= strchr (action_exp
, ','); /* more? */
1286 unsigned long addr
, len
;
1287 struct cleanup
*old_chain
= NULL
;
1288 struct cleanup
*old_chain1
= NULL
;
1289 struct agent_reqs areqs
;
1291 exp
= parse_exp_1 (&action_exp
,
1292 block_for_pc (tloc
->address
), 1);
1293 old_chain
= make_cleanup (free_current_contents
, &exp
);
1295 switch (exp
->elts
[0].opcode
)
1299 const char *name
= &exp
->elts
[2].string
;
1301 i
= user_reg_map_name_to_regnum (t
->gdbarch
,
1302 name
, strlen (name
));
1304 internal_error (__FILE__
, __LINE__
,
1305 _("Register $%s not available"),
1308 printf_filtered ("OP_REGISTER: ");
1309 add_register (collect
, i
);
1314 /* safe because we know it's a simple expression */
1315 tempval
= evaluate_expression (exp
);
1316 addr
= value_address (tempval
);
1317 len
= TYPE_LENGTH (check_typedef (exp
->elts
[1].type
));
1318 add_memrange (collect
, memrange_absolute
, addr
, len
);
1322 collect_symbol (collect
,
1323 exp
->elts
[2].symbol
,
1330 default: /* full-fledged expression */
1331 aexpr
= gen_trace_for_expr (tloc
->address
, exp
);
1333 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1335 ax_reqs (aexpr
, &areqs
);
1337 report_agent_reqs_errors (aexpr
, &areqs
);
1339 discard_cleanups (old_chain1
);
1340 add_aexpr (collect
, aexpr
);
1342 /* take care of the registers */
1343 if (areqs
.reg_mask_len
> 0)
1348 for (ndx1
= 0; ndx1
< areqs
.reg_mask_len
; ndx1
++)
1350 QUIT
; /* allow user to bail out with ^C */
1351 if (areqs
.reg_mask
[ndx1
] != 0)
1353 /* assume chars have 8 bits */
1354 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1355 if (areqs
.reg_mask
[ndx1
] & (1 << ndx2
))
1356 /* it's used -- record it */
1357 add_register (collect
,
1364 do_cleanups (old_chain
);
1367 while (action_exp
&& *action_exp
++ == ',');
1369 else if (cmd_cfunc_eq (cmd
, teval_pseudocommand
))
1372 { /* repeat over a comma-separated list */
1373 QUIT
; /* allow user to bail out with ^C */
1374 while (isspace ((int) *action_exp
))
1378 unsigned long addr
, len
;
1379 struct cleanup
*old_chain
= NULL
;
1380 struct cleanup
*old_chain1
= NULL
;
1381 struct agent_reqs areqs
;
1383 exp
= parse_exp_1 (&action_exp
,
1384 block_for_pc (tloc
->address
), 1);
1385 old_chain
= make_cleanup (free_current_contents
, &exp
);
1387 aexpr
= gen_eval_for_expr (tloc
->address
, exp
);
1388 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1390 ax_reqs (aexpr
, &areqs
);
1392 report_agent_reqs_errors (aexpr
, &areqs
);
1394 discard_cleanups (old_chain1
);
1395 /* Even though we're not officially collecting, add
1396 to the collect list anyway. */
1397 add_aexpr (collect
, aexpr
);
1399 do_cleanups (old_chain
);
1402 while (action_exp
&& *action_exp
++ == ',');
1404 else if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
1406 /* We check against nested while-stepping when setting
1407 breakpoint action, so no way to run into nested
1409 gdb_assert (stepping_list
);
1411 encode_actions_1 (action
->body_list
[0], t
, tloc
, frame_reg
, frame_offset
,
1412 stepping_list
, NULL
);
1415 error (_("Invalid tracepoint command '%s'"), action
->line
);
1419 /* Render all actions into gdb protocol. */
1421 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
1422 char ***tdp_actions
, char ***stepping_actions
)
1424 static char tdp_buff
[2048], step_buff
[2048];
1425 char *default_collect_line
= NULL
;
1426 struct command_line
*actions
;
1427 struct command_line
*default_collect_action
= NULL
;
1429 LONGEST frame_offset
;
1430 struct cleanup
*back_to
;
1432 back_to
= make_cleanup (null_cleanup
, NULL
);
1434 clear_collection_list (&tracepoint_list
);
1435 clear_collection_list (&stepping_list
);
1437 *tdp_actions
= NULL
;
1438 *stepping_actions
= NULL
;
1440 gdbarch_virtual_frame_pointer (t
->gdbarch
,
1441 t
->loc
->address
, &frame_reg
, &frame_offset
);
1443 actions
= breakpoint_commands (t
);
1445 /* If there are default expressions to collect, make up a collect
1446 action and prepend to the action list to encode. Note that since
1447 validation is per-tracepoint (local var "xyz" might be valid for
1448 one tracepoint and not another, etc), we make up the action on
1449 the fly, and don't cache it. */
1450 if (*default_collect
)
1454 default_collect_line
= xstrprintf ("collect %s", default_collect
);
1455 make_cleanup (xfree
, default_collect_line
);
1457 line
= default_collect_line
;
1458 validate_actionline (&line
, t
);
1460 default_collect_action
= xmalloc (sizeof (struct command_line
));
1461 make_cleanup (xfree
, default_collect_action
);
1462 default_collect_action
->next
= actions
;
1463 default_collect_action
->line
= line
;
1464 actions
= default_collect_action
;
1466 encode_actions_1 (actions
, t
, tloc
, frame_reg
, frame_offset
,
1467 &tracepoint_list
, &stepping_list
);
1469 memrange_sortmerge (&tracepoint_list
);
1470 memrange_sortmerge (&stepping_list
);
1472 *tdp_actions
= stringify_collection_list (&tracepoint_list
,
1474 *stepping_actions
= stringify_collection_list (&stepping_list
,
1477 do_cleanups (back_to
);
1481 add_aexpr (struct collection_list
*collect
, struct agent_expr
*aexpr
)
1483 if (collect
->next_aexpr_elt
>= collect
->aexpr_listsize
)
1485 collect
->aexpr_list
=
1486 xrealloc (collect
->aexpr_list
,
1487 2 * collect
->aexpr_listsize
* sizeof (struct agent_expr
*));
1488 collect
->aexpr_listsize
*= 2;
1490 collect
->aexpr_list
[collect
->next_aexpr_elt
] = aexpr
;
1491 collect
->next_aexpr_elt
++;
1496 start_tracing (void)
1499 VEC(breakpoint_p
) *tp_vec
= NULL
;
1501 struct breakpoint
*t
;
1502 struct trace_state_variable
*tsv
;
1503 int any_enabled
= 0;
1505 tp_vec
= all_tracepoints ();
1507 /* No point in tracing without any tracepoints... */
1508 if (VEC_length (breakpoint_p
, tp_vec
) == 0)
1510 VEC_free (breakpoint_p
, tp_vec
);
1511 error (_("No tracepoints defined, not starting trace"));
1514 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
1516 if (t
->enable_state
== bp_enabled
)
1523 /* No point in tracing with only disabled tracepoints. */
1526 VEC_free (breakpoint_p
, tp_vec
);
1527 error (_("No tracepoints enabled, not starting trace"));
1530 target_trace_init ();
1532 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
1534 t
->number_on_target
= 0;
1535 target_download_tracepoint (t
);
1536 t
->number_on_target
= t
->number
;
1538 VEC_free (breakpoint_p
, tp_vec
);
1540 /* Send down all the trace state variables too. */
1541 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
1543 target_download_trace_state_variable (tsv
);
1546 /* Tell target to treat text-like sections as transparent. */
1547 target_trace_set_readonly_regions ();
1548 /* Set some mode flags. */
1549 target_set_disconnected_tracing (disconnected_tracing
);
1550 target_set_circular_trace_buffer (circular_trace_buffer
);
1552 /* Now insert traps and begin collecting data. */
1553 target_trace_start ();
1555 /* Reset our local state. */
1556 set_traceframe_num (-1);
1557 set_tracepoint_num (-1);
1558 set_traceframe_context (NULL
);
1559 current_trace_status()->running
= 1;
1564 Tell target to clear any previous trace experiment.
1565 Walk the list of tracepoints, and send them (and their actions)
1566 to the target. If no errors,
1567 Tell target to start a new trace experiment. */
1570 trace_start_command (char *args
, int from_tty
)
1572 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1574 if (current_trace_status ()->running
)
1577 && !query (_("A trace is running already. Start a new run? ")))
1578 error (_("New trace run not started."));
1586 trace_stop_command (char *args
, int from_tty
)
1588 if (!current_trace_status ()->running
)
1589 error (_("Trace is not running."));
1597 target_trace_stop ();
1598 /* should change in response to reply? */
1599 current_trace_status ()->running
= 0;
1602 /* tstatus command */
1604 trace_status_command (char *args
, int from_tty
)
1606 struct trace_status
*ts
= current_trace_status ();
1609 status
= target_get_trace_status (ts
);
1614 printf_filtered (_("Using a trace file.\n"));
1617 printf_filtered (_("Trace can not be run on this target.\n"));
1622 if (!ts
->running_known
)
1624 printf_filtered (_("Run/stop status is unknown.\n"));
1626 else if (ts
->running
)
1628 printf_filtered (_("Trace is running on the target.\n"));
1629 if (disconnected_tracing
)
1630 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1632 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1636 switch (ts
->stop_reason
)
1638 case trace_never_run
:
1639 printf_filtered (_("No trace has been run on the target.\n"));
1642 printf_filtered (_("Trace stopped by a tstop command.\n"));
1644 case trace_buffer_full
:
1645 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1647 case trace_disconnected
:
1648 printf_filtered (_("Trace stopped because of disconnection.\n"));
1650 case tracepoint_passcount
:
1651 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1652 ts
->stopping_tracepoint
);
1654 case tracepoint_error
:
1655 if (ts
->stopping_tracepoint
)
1656 printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
1657 ts
->error_desc
, ts
->stopping_tracepoint
);
1659 printf_filtered (_("Trace stopped by an error (%s).\n"),
1662 case trace_stop_reason_unknown
:
1663 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1666 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1672 if (ts
->traceframes_created
>= 0
1673 && ts
->traceframe_count
!= ts
->traceframes_created
)
1675 printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
1676 ts
->traceframe_count
, ts
->traceframes_created
);
1678 else if (ts
->traceframe_count
>= 0)
1680 printf_filtered (_("Collected %d trace frames.\n"),
1681 ts
->traceframe_count
);
1684 if (ts
->buffer_free
>= 0)
1686 if (ts
->buffer_size
>= 0)
1688 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1689 ts
->buffer_free
, ts
->buffer_size
);
1690 if (ts
->buffer_size
> 0)
1691 printf_filtered (_(" (%d%% full)"),
1692 ((int) ((((long long) (ts
->buffer_size
1693 - ts
->buffer_free
)) * 100)
1694 / ts
->buffer_size
)));
1695 printf_filtered (_(".\n"));
1698 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1702 /* Now report on what we're doing with tfind. */
1703 if (traceframe_number
>= 0)
1704 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1705 traceframe_number
, tracepoint_number
);
1707 printf_filtered (_("Not looking at any trace frame.\n"));
1710 /* Report the trace status to uiout, in a way suitable for MI, and not
1711 suitable for CLI. If ON_STOP is true, suppress a few fields that
1712 are not meaningful in the -trace-stop response.
1714 The implementation is essentially parallel to trace_status_command, but
1715 merging them will result in unreadable code. */
1717 trace_status_mi (int on_stop
)
1719 struct trace_status
*ts
= current_trace_status ();
1721 char *string_status
;
1723 status
= target_get_trace_status (ts
);
1725 if (status
== -1 && !ts
->from_file
)
1727 ui_out_field_string (uiout
, "supported", "0");
1732 ui_out_field_string (uiout
, "supported", "file");
1734 ui_out_field_string (uiout
, "supported", "1");
1736 gdb_assert (ts
->running_known
);
1740 ui_out_field_string (uiout
, "running", "1");
1742 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
1743 Given that the frontend gets the status either on -trace-stop, or from
1744 -trace-status after re-connection, it does not seem like this
1745 information is necessary for anything. It is not necessary for either
1746 figuring the vital state of the target nor for navigation of trace
1747 frames. If the frontend wants to show the current state is some
1748 configure dialog, it can request the value when such dialog is
1749 invoked by the user. */
1753 char *stop_reason
= NULL
;
1754 int stopping_tracepoint
= -1;
1757 ui_out_field_string (uiout
, "running", "0");
1759 if (ts
->stop_reason
!= trace_stop_reason_unknown
)
1761 switch (ts
->stop_reason
)
1764 stop_reason
= "request";
1766 case trace_buffer_full
:
1767 stop_reason
= "overflow";
1769 case trace_disconnected
:
1770 stop_reason
= "disconnection";
1772 case tracepoint_passcount
:
1773 stop_reason
= "passcount";
1774 stopping_tracepoint
= ts
->stopping_tracepoint
;
1776 case tracepoint_error
:
1777 stop_reason
= "error";
1778 stopping_tracepoint
= ts
->stopping_tracepoint
;
1784 ui_out_field_string (uiout
, "stop-reason", stop_reason
);
1785 if (stopping_tracepoint
!= -1)
1786 ui_out_field_int (uiout
, "stopping-tracepoint",
1787 stopping_tracepoint
);
1788 if (ts
->stop_reason
== tracepoint_error
)
1789 ui_out_field_string (uiout
, "error-description",
1796 if ((int) ts
->traceframe_count
!= -1)
1797 ui_out_field_int (uiout
, "frames", ts
->traceframe_count
);
1798 if ((int) ts
->buffer_size
!= -1)
1799 ui_out_field_int (uiout
, "buffer-size", (int) ts
->buffer_size
);
1800 if ((int) ts
->buffer_free
!= -1)
1801 ui_out_field_int (uiout
, "buffer-free", (int) ts
->buffer_free
);
1806 disconnect_or_stop_tracing (int from_tty
)
1808 /* It can happen that the target that was tracing went away on its
1809 own, and we didn't notice. Get a status update, and if the
1810 current target doesn't even do tracing, then assume it's not
1812 if (target_get_trace_status (current_trace_status ()) < 0)
1813 current_trace_status ()->running
= 0;
1815 if (current_trace_status ()->running
&& from_tty
)
1817 int cont
= query (_("Trace is running. Continue tracing after detach? "));
1818 /* Note that we send the query result without affecting the
1819 user's setting of disconnected_tracing, so that the answer is
1821 send_disconnected_tracing_value (cont
);
1823 /* Also ensure that we do the equivalent of a tstop command if
1824 tracing is not to continue after the detach. */
1829 /* Also we want to be out of tfind mode, otherwise things can get
1830 confusing upon reconnection. Just use these calls instead of
1831 full tfind_1 behavior because we're in the middle of detaching,
1832 and there's no point to updating current stack frame etc. */
1833 set_traceframe_number (-1);
1834 set_traceframe_context (NULL
);
1837 /* Worker function for the various flavors of the tfind command. */
1839 tfind_1 (enum trace_find_type type
, int num
,
1840 ULONGEST addr1
, ULONGEST addr2
,
1843 int target_frameno
= -1, target_tracept
= -1;
1844 struct frame_id old_frame_id
;
1846 struct breakpoint
*tp
;
1848 old_frame_id
= get_frame_id (get_current_frame ());
1850 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
1853 if (type
== tfind_number
1855 && target_frameno
== -1)
1857 /* We told the target to get out of tfind mode, and it did. */
1859 else if (target_frameno
== -1)
1861 /* A request for a non-existant trace frame has failed.
1862 Our response will be different, depending on FROM_TTY:
1864 If FROM_TTY is true, meaning that this command was
1865 typed interactively by the user, then give an error
1866 and DO NOT change the state of traceframe_number etc.
1868 However if FROM_TTY is false, meaning that we're either
1869 in a script, a loop, or a user-defined command, then
1870 DON'T give an error, but DO change the state of
1871 traceframe_number etc. to invalid.
1873 The rationalle is that if you typed the command, you
1874 might just have committed a typo or something, and you'd
1875 like to NOT lose your current debugging state. However
1876 if you're in a user-defined command or especially in a
1877 loop, then you need a way to detect that the command
1878 failed WITHOUT aborting. This allows you to write
1879 scripts that search thru the trace buffer until the end,
1880 and then continue on to do something else. */
1883 error (_("Target failed to find requested trace frame."));
1887 printf_filtered ("End of trace buffer.\n");
1888 #if 0 /* dubious now? */
1889 /* The following will not recurse, since it's
1891 trace_find_command ("-1", from_tty
);
1896 tp
= get_tracepoint_by_number_on_target (target_tracept
);
1898 reinit_frame_cache ();
1899 registers_changed ();
1900 target_dcache_invalidate ();
1901 set_traceframe_num (target_frameno
);
1902 set_tracepoint_num (tp
? tp
->number
: target_tracept
);
1903 if (target_frameno
== -1)
1904 set_traceframe_context (NULL
);
1906 set_traceframe_context (get_current_frame ());
1908 if (traceframe_number
>= 0)
1910 /* Use different branches for MI and CLI to make CLI messages
1912 if (ui_out_is_mi_like_p (uiout
))
1914 ui_out_field_string (uiout
, "found", "1");
1915 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
1916 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
1920 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1921 traceframe_number
, tracepoint_number
);
1926 if (ui_out_is_mi_like_p (uiout
))
1927 ui_out_field_string (uiout
, "found", "0");
1929 printf_unfiltered (_("No trace frame found"));
1932 /* If we're in nonstop mode and getting out of looking at trace
1933 frames, there won't be any current frame to go back to and
1936 && (has_stack_frames () || traceframe_number
>= 0))
1938 enum print_what print_what
;
1940 /* NOTE: in immitation of the step command, try to determine
1941 whether we have made a transition from one function to
1942 another. If so, we'll print the "stack frame" (ie. the new
1943 function and it's arguments) -- otherwise we'll just show the
1946 if (frame_id_eq (old_frame_id
,
1947 get_frame_id (get_current_frame ())))
1948 print_what
= SRC_LINE
;
1950 print_what
= SRC_AND_LOC
;
1952 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
1957 /* trace_find_command takes a trace frame number n,
1958 sends "QTFrame:<n>" to the target,
1959 and accepts a reply that may contain several optional pieces
1960 of information: a frame number, a tracepoint number, and an
1961 indication of whether this is a trap frame or a stepping frame.
1963 The minimal response is just "OK" (which indicates that the
1964 target does not give us a frame number or a tracepoint number).
1965 Instead of that, the target may send us a string containing
1967 F<hexnum> (gives the selected frame number)
1968 T<hexnum> (gives the selected tracepoint number)
1973 trace_find_command (char *args
, int from_tty
)
1974 { /* this should only be called with a numeric argument */
1977 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1978 error ("May not look at trace frames while trace is running.");
1980 if (args
== 0 || *args
== 0)
1981 { /* TFIND with no args means find NEXT trace frame. */
1982 if (traceframe_number
== -1)
1983 frameno
= 0; /* "next" is first one */
1985 frameno
= traceframe_number
+ 1;
1987 else if (0 == strcmp (args
, "-"))
1989 if (traceframe_number
== -1)
1990 error (_("not debugging trace buffer"));
1991 else if (from_tty
&& traceframe_number
== 0)
1992 error (_("already at start of trace buffer"));
1994 frameno
= traceframe_number
- 1;
1996 /* A hack to work around eval's need for fp to have been collected. */
1997 else if (0 == strcmp (args
, "-1"))
2000 frameno
= parse_and_eval_long (args
);
2003 error (_("invalid input (%d is less than zero)"), frameno
);
2005 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
2010 trace_find_end_command (char *args
, int from_tty
)
2012 trace_find_command ("-1", from_tty
);
2017 trace_find_none_command (char *args
, int from_tty
)
2019 trace_find_command ("-1", from_tty
);
2024 trace_find_start_command (char *args
, int from_tty
)
2026 trace_find_command ("0", from_tty
);
2029 /* tfind pc command */
2031 trace_find_pc_command (char *args
, int from_tty
)
2036 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2037 error ("May not look at trace frames while trace is running.");
2039 if (args
== 0 || *args
== 0)
2040 pc
= regcache_read_pc (get_current_regcache ());
2042 pc
= parse_and_eval_address (args
);
2044 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
2047 /* tfind tracepoint command */
2049 trace_find_tracepoint_command (char *args
, int from_tty
)
2052 struct breakpoint
*tp
;
2054 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2055 error ("May not look at trace frames while trace is running.");
2057 if (args
== 0 || *args
== 0)
2059 if (tracepoint_number
== -1)
2060 error (_("No current tracepoint -- please supply an argument."));
2062 tdp
= tracepoint_number
; /* default is current TDP */
2065 tdp
= parse_and_eval_long (args
);
2067 /* If we have the tracepoint on hand, use the number that the
2068 target knows about (which may be different if we disconnected
2069 and reconnected). */
2070 tp
= get_tracepoint (tdp
);
2072 tdp
= tp
->number_on_target
;
2074 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
2077 /* TFIND LINE command:
2079 This command will take a sourceline for argument, just like BREAK
2080 or TRACE (ie. anything that "decode_line_1" can handle).
2082 With no argument, this command will find the next trace frame
2083 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2086 trace_find_line_command (char *args
, int from_tty
)
2088 static CORE_ADDR start_pc
, end_pc
;
2089 struct symtabs_and_lines sals
;
2090 struct symtab_and_line sal
;
2091 struct cleanup
*old_chain
;
2092 char startpc_str
[40], endpc_str
[40];
2094 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2095 error ("May not look at trace frames while trace is running.");
2097 if (args
== 0 || *args
== 0)
2099 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2101 sals
.sals
= (struct symtab_and_line
*)
2102 xmalloc (sizeof (struct symtab_and_line
));
2107 sals
= decode_line_spec (args
, 1);
2111 old_chain
= make_cleanup (xfree
, sals
.sals
);
2112 if (sal
.symtab
== 0)
2113 error (_("No line number information available."));
2115 if (sal
.line
> 0 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2117 if (start_pc
== end_pc
)
2119 printf_filtered ("Line %d of \"%s\"",
2120 sal
.line
, sal
.symtab
->filename
);
2122 printf_filtered (" is at address ");
2123 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2125 printf_filtered (" but contains no code.\n");
2126 sal
= find_pc_line (start_pc
, 0);
2128 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2129 && start_pc
!= end_pc
)
2130 printf_filtered ("Attempting to find line %d instead.\n",
2133 error (_("Cannot find a good line."));
2137 /* Is there any case in which we get here, and have an address
2138 which the user would want to see? If we have debugging
2139 symbols and no line numbers? */
2140 error (_("Line number %d is out of range for \"%s\"."),
2141 sal
.line
, sal
.symtab
->filename
);
2143 /* Find within range of stated line. */
2145 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2147 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2148 do_cleanups (old_chain
);
2151 /* tfind range command */
2153 trace_find_range_command (char *args
, int from_tty
)
2155 static CORE_ADDR start
, stop
;
2156 char start_str
[40], stop_str
[40];
2159 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2160 error ("May not look at trace frames while trace is running.");
2162 if (args
== 0 || *args
== 0)
2163 { /* XXX FIXME: what should default behavior be? */
2164 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2168 if (0 != (tmp
= strchr (args
, ',')))
2170 *tmp
++ = '\0'; /* terminate start address */
2171 while (isspace ((int) *tmp
))
2173 start
= parse_and_eval_address (args
);
2174 stop
= parse_and_eval_address (tmp
);
2177 { /* no explicit end address? */
2178 start
= parse_and_eval_address (args
);
2179 stop
= start
+ 1; /* ??? */
2182 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2185 /* tfind outside command */
2187 trace_find_outside_command (char *args
, int from_tty
)
2189 CORE_ADDR start
, stop
;
2190 char start_str
[40], stop_str
[40];
2193 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2194 error ("May not look at trace frames while trace is running.");
2196 if (args
== 0 || *args
== 0)
2197 { /* XXX FIXME: what should default behavior be? */
2198 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2202 if (0 != (tmp
= strchr (args
, ',')))
2204 *tmp
++ = '\0'; /* terminate start address */
2205 while (isspace ((int) *tmp
))
2207 start
= parse_and_eval_address (args
);
2208 stop
= parse_and_eval_address (tmp
);
2211 { /* no explicit end address? */
2212 start
= parse_and_eval_address (args
);
2213 stop
= start
+ 1; /* ??? */
2216 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2219 /* info scope command: list the locals for a scope. */
2221 scope_info (char *args
, int from_tty
)
2223 struct symtabs_and_lines sals
;
2225 struct minimal_symbol
*msym
;
2226 struct block
*block
;
2227 char **canonical
, *symname
, *save_args
= args
;
2228 struct dict_iterator iter
;
2230 struct gdbarch
*gdbarch
;
2233 if (args
== 0 || *args
== 0)
2234 error (_("requires an argument (function, line or *addr) to define a scope"));
2236 sals
= decode_line_1 (&args
, 1, NULL
, 0, &canonical
, NULL
);
2237 if (sals
.nelts
== 0)
2238 return; /* presumably decode_line_1 has already warned */
2240 /* Resolve line numbers to PC */
2241 resolve_sal_pc (&sals
.sals
[0]);
2242 block
= block_for_pc (sals
.sals
[0].pc
);
2246 QUIT
; /* allow user to bail out with ^C */
2247 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2249 QUIT
; /* allow user to bail out with ^C */
2251 printf_filtered ("Scope for %s:\n", save_args
);
2254 symname
= SYMBOL_PRINT_NAME (sym
);
2255 if (symname
== NULL
|| *symname
== '\0')
2256 continue; /* probably botched, certainly useless */
2258 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2260 printf_filtered ("Symbol %s is ", symname
);
2261 switch (SYMBOL_CLASS (sym
))
2264 case LOC_UNDEF
: /* messed up symbol? */
2265 printf_filtered ("a bogus symbol, class %d.\n",
2266 SYMBOL_CLASS (sym
));
2267 count
--; /* don't count this one */
2270 printf_filtered ("a constant with value %ld (0x%lx)",
2271 SYMBOL_VALUE (sym
), SYMBOL_VALUE (sym
));
2273 case LOC_CONST_BYTES
:
2274 printf_filtered ("constant bytes: ");
2275 if (SYMBOL_TYPE (sym
))
2276 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2277 fprintf_filtered (gdb_stdout
, " %02x",
2278 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2281 printf_filtered ("in static storage at address ");
2282 printf_filtered ("%s", paddress (gdbarch
,
2283 SYMBOL_VALUE_ADDRESS (sym
)));
2286 /* GDBARCH is the architecture associated with the objfile
2287 the symbol is defined in; the target architecture may be
2288 different, and may provide additional registers. However,
2289 we do not know the target architecture at this point.
2290 We assume the objfile architecture will contain all the
2291 standard registers that occur in debug info in that
2293 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2295 if (SYMBOL_IS_ARGUMENT (sym
))
2296 printf_filtered ("an argument in register $%s",
2297 gdbarch_register_name (gdbarch
, regno
));
2299 printf_filtered ("a local variable in register $%s",
2300 gdbarch_register_name (gdbarch
, regno
));
2303 printf_filtered ("an argument at stack/frame offset %ld",
2304 SYMBOL_VALUE (sym
));
2307 printf_filtered ("a local variable at frame offset %ld",
2308 SYMBOL_VALUE (sym
));
2311 printf_filtered ("a reference argument at offset %ld",
2312 SYMBOL_VALUE (sym
));
2314 case LOC_REGPARM_ADDR
:
2315 /* Note comment at LOC_REGISTER. */
2316 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2317 printf_filtered ("the address of an argument, in register $%s",
2318 gdbarch_register_name (gdbarch
, regno
));
2321 printf_filtered ("a typedef.\n");
2324 printf_filtered ("a label at address ");
2325 printf_filtered ("%s", paddress (gdbarch
,
2326 SYMBOL_VALUE_ADDRESS (sym
)));
2329 printf_filtered ("a function at address ");
2330 printf_filtered ("%s",
2331 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2333 case LOC_UNRESOLVED
:
2334 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2337 printf_filtered ("Unresolved Static");
2340 printf_filtered ("static storage at address ");
2341 printf_filtered ("%s",
2342 paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (msym
)));
2345 case LOC_OPTIMIZED_OUT
:
2346 printf_filtered ("optimized out.\n");
2349 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, gdb_stdout
);
2352 if (SYMBOL_TYPE (sym
))
2353 printf_filtered (", length %d.\n",
2354 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2356 if (BLOCK_FUNCTION (block
))
2359 block
= BLOCK_SUPERBLOCK (block
);
2362 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2366 /* worker function (cleanup) */
2368 replace_comma (void *data
)
2375 /* Helper for trace_dump_command. Dump the action list starting at
2376 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2377 actions of the body of a while-stepping action. STEPPING_FRAME is
2378 set if the current traceframe was determined to be a while-stepping
2382 trace_dump_actions (struct command_line
*action
,
2383 int stepping_actions
, int stepping_frame
,
2386 char *action_exp
, *next_comma
;
2388 for (; action
!= NULL
; action
= action
->next
)
2390 struct cmd_list_element
*cmd
;
2392 QUIT
; /* allow user to bail out with ^C */
2393 action_exp
= action
->line
;
2394 while (isspace ((int) *action_exp
))
2397 /* The collection actions to be done while stepping are
2398 bracketed by the commands "while-stepping" and "end". */
2400 if (*action_exp
== '#') /* comment line */
2403 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2405 error (_("Bad action list item: %s"), action_exp
);
2407 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2411 for (i
= 0; i
< action
->body_count
; ++i
)
2412 trace_dump_actions (action
->body_list
[i
],
2413 1, stepping_frame
, from_tty
);
2415 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2417 /* Display the collected data.
2418 For the trap frame, display only what was collected at
2419 the trap. Likewise for stepping frames, display only
2420 what was collected while stepping. This means that the
2421 two boolean variables, STEPPING_FRAME and
2422 STEPPING_ACTIONS should be equal. */
2423 if (stepping_frame
== stepping_actions
)
2426 { /* repeat over a comma-separated list */
2427 QUIT
; /* allow user to bail out with ^C */
2428 if (*action_exp
== ',')
2430 while (isspace ((int) *action_exp
))
2433 next_comma
= strchr (action_exp
, ',');
2435 if (0 == strncasecmp (action_exp
, "$reg", 4))
2436 registers_info (NULL
, from_tty
);
2437 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2438 locals_info (NULL
, from_tty
);
2439 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2440 args_info (NULL
, from_tty
);
2445 make_cleanup (replace_comma
, next_comma
);
2448 printf_filtered ("%s = ", action_exp
);
2449 output_command (action_exp
, from_tty
);
2450 printf_filtered ("\n");
2454 action_exp
= next_comma
;
2456 while (action_exp
&& *action_exp
== ',');
2462 /* The tdump command. */
2465 trace_dump_command (char *args
, int from_tty
)
2467 struct regcache
*regcache
;
2468 struct breakpoint
*t
;
2469 int stepping_frame
= 0;
2470 struct bp_location
*loc
;
2472 if (tracepoint_number
== -1)
2474 warning (_("No current trace frame."));
2478 t
= get_tracepoint (tracepoint_number
);
2481 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2484 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2485 tracepoint_number
, traceframe_number
);
2487 /* The current frame is a trap frame if the frame PC is equal
2488 to the tracepoint PC. If not, then the current frame was
2489 collected during single-stepping. */
2491 regcache
= get_current_regcache ();
2493 /* If the traceframe's address matches any of the tracepoint's
2494 locations, assume it is a direct hit rather than a while-stepping
2495 frame. (FIXME this is not reliable, should record each frame's
2498 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2499 if (loc
->address
== regcache_read_pc (regcache
))
2502 trace_dump_actions (breakpoint_commands (t
), 0, stepping_frame
, from_tty
);
2505 /* Encode a piece of a tracepoint's source-level definition in a form
2506 that is suitable for both protocol and saving in files. */
2507 /* This version does not do multiple encodes for long strings; it should
2508 return an offset to the next piece to encode. FIXME */
2511 encode_source_string (int tpnum
, ULONGEST addr
,
2512 char *srctype
, char *src
, char *buf
, int buf_size
)
2514 if (80 + strlen (srctype
) > buf_size
)
2515 error (_("Buffer too small for source encoding"));
2516 sprintf (buf
, "%x:%s:%s:%x:%x:",
2517 tpnum
, phex_nz (addr
, sizeof (addr
)), srctype
, 0, (int) strlen (src
));
2518 if (strlen (buf
) + strlen (src
) * 2 >= buf_size
)
2519 error (_("Source string too long for buffer"));
2520 bin2hex (src
, buf
+ strlen (buf
), 0);
2524 extern int trace_regblock_size
;
2526 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2527 non-zero, the save is performed on the target, otherwise GDB obtains all
2528 trace data and saves it locally. */
2531 trace_save (const char *filename
, int target_does_save
)
2533 struct cleanup
*cleanup
;
2535 struct trace_status
*ts
= current_trace_status ();
2538 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
2539 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
2543 ULONGEST offset
= 0;
2544 #define MAX_TRACE_UPLOAD 2000
2545 gdb_byte buf
[MAX_TRACE_UPLOAD
];
2548 /* If the target is to save the data to a file on its own, then just
2549 send the command and be done with it. */
2550 if (target_does_save
)
2552 err
= target_save_trace_data (filename
);
2554 error (_("Target failed to save trace data to '%s'."),
2559 /* Get the trace status first before opening the file, so if the
2560 target is losing, we can get out without touching files. */
2561 status
= target_get_trace_status (ts
);
2563 pathname
= tilde_expand (filename
);
2564 cleanup
= make_cleanup (xfree
, pathname
);
2566 fp
= fopen (pathname
, "w");
2568 error (_("Unable to open file '%s' for saving trace data (%s)"),
2569 filename
, safe_strerror (errno
));
2570 make_cleanup_fclose (fp
);
2572 /* Write a file header, with a high-bit-set char to indicate a
2573 binary file, plus a hint as what this file is, and a version
2574 number in case of future needs. */
2575 written
= fwrite ("\x7fTRACE0\n", 8, 1, fp
);
2577 perror_with_name (pathname
);
2579 /* Write descriptive info. */
2581 /* Write out the size of a register block. */
2582 fprintf (fp
, "R %x\n", trace_regblock_size
);
2584 /* Write out status of the tracing run (aka "tstatus" info). */
2585 fprintf (fp
, "status %c;%s",
2586 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
2587 if (ts
->stop_reason
== tracepoint_error
)
2589 char *buf
= (char *) alloca (strlen (ts
->error_desc
) * 2 + 1);
2590 bin2hex ((gdb_byte
*) ts
->error_desc
, buf
, 0);
2591 fprintf (fp
, ":%s", buf
);
2593 fprintf (fp
, ":%x", ts
->stopping_tracepoint
);
2594 if (ts
->traceframe_count
>= 0)
2595 fprintf (fp
, ";tframes:%x", ts
->traceframe_count
);
2596 if (ts
->traceframes_created
>= 0)
2597 fprintf (fp
, ";tcreated:%x", ts
->traceframes_created
);
2598 if (ts
->buffer_free
>= 0)
2599 fprintf (fp
, ";tfree:%x", ts
->buffer_free
);
2600 if (ts
->buffer_size
>= 0)
2601 fprintf (fp
, ";tsize:%x", ts
->buffer_size
);
2604 /* Note that we want to upload tracepoints and save those, rather
2605 than simply writing out the local ones, because the user may have
2606 changed tracepoints in GDB in preparation for a future tracing
2607 run, or maybe just mass-deleted all types of breakpoints as part
2608 of cleaning up. So as not to contaminate the session, leave the
2609 data in its uploaded form, don't make into real tracepoints. */
2611 /* Get trace state variables first, they may be checked when parsing
2612 uploaded commands. */
2614 target_upload_trace_state_variables (&uploaded_tsvs
);
2616 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2622 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
2623 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
2626 fprintf (fp
, "tsv %x:%s:%x:%s\n",
2627 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
2628 utsv
->builtin
, buf
);
2634 free_uploaded_tsvs (&uploaded_tsvs
);
2636 target_upload_tracepoints (&uploaded_tps
);
2638 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
2640 fprintf (fp
, "tp T%x:%s:%c:%x:%x",
2641 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2642 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
2643 if (utp
->type
== bp_fast_tracepoint
)
2644 fprintf (fp
, ":F%x", utp
->orig_size
);
2646 fprintf (fp
, ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
2649 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
2650 fprintf (fp
, "tp A%x:%s:%s\n",
2651 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
2652 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
2653 fprintf (fp
, "tp S%x:%s:%s\n",
2654 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
2657 encode_source_string (utp
->number
, utp
->addr
,
2658 "at", utp
->at_string
, buf
, MAX_TRACE_UPLOAD
);
2659 fprintf (fp
, "tp Z%s\n", buf
);
2661 if (utp
->cond_string
)
2663 encode_source_string (utp
->number
, utp
->addr
,
2664 "cond", utp
->cond_string
, buf
, MAX_TRACE_UPLOAD
);
2665 fprintf (fp
, "tp Z%s\n", buf
);
2667 for (a
= 0; VEC_iterate (char_ptr
, utp
->cmd_strings
, a
, act
); ++a
)
2669 encode_source_string (utp
->number
, utp
->addr
, "cmd", act
,
2670 buf
, MAX_TRACE_UPLOAD
);
2671 fprintf (fp
, "tp Z%s\n", buf
);
2675 free_uploaded_tps (&uploaded_tps
);
2677 /* Mark the end of the definition section. */
2680 /* Get and write the trace data proper. We ask for big blocks, in
2681 the hopes of efficiency, but will take less if the target has
2682 packet size limitations or some such. */
2685 gotten
= target_get_raw_trace_data (buf
, offset
, MAX_TRACE_UPLOAD
);
2687 error (_("Failure to get requested trace buffer data"));
2688 /* No more data is forthcoming, we're done. */
2691 written
= fwrite (buf
, gotten
, 1, fp
);
2693 perror_with_name (pathname
);
2697 /* Mark the end of trace data. (We know that gotten is 0 at this point.) */
2698 written
= fwrite (&gotten
, 4, 1, fp
);
2700 perror_with_name (pathname
);
2702 do_cleanups (cleanup
);
2706 trace_save_command (char *args
, int from_tty
)
2708 int target_does_save
= 0;
2710 char *filename
= NULL
;
2711 struct cleanup
*back_to
;
2714 error_no_arg (_("file in which to save trace data"));
2716 argv
= gdb_buildargv (args
);
2717 back_to
= make_cleanup_freeargv (argv
);
2719 for (; *argv
; ++argv
)
2721 if (strcmp (*argv
, "-r") == 0)
2722 target_does_save
= 1;
2723 else if (**argv
== '-')
2724 error (_("unknown option `%s'"), *argv
);
2730 error_no_arg (_("file in which to save trace data"));
2732 trace_save (filename
, target_does_save
);
2735 printf_filtered (_("Trace data saved to file '%s'.\n"), args
);
2737 do_cleanups (back_to
);
2740 /* Tell the target what to do with an ongoing tracing run if GDB
2741 disconnects for some reason. */
2744 send_disconnected_tracing_value (int value
)
2746 target_set_disconnected_tracing (value
);
2750 set_disconnected_tracing (char *args
, int from_tty
,
2751 struct cmd_list_element
*c
)
2753 send_disconnected_tracing_value (disconnected_tracing
);
2757 set_circular_trace_buffer (char *args
, int from_tty
,
2758 struct cmd_list_element
*c
)
2760 target_set_circular_trace_buffer (circular_trace_buffer
);
2763 /* Convert the memory pointed to by mem into hex, placing result in buf.
2764 * Return a pointer to the last char put in buf (null)
2765 * "stolen" from sparc-stub.c
2768 static const char hexchars
[] = "0123456789abcdef";
2771 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
2779 *buf
++ = hexchars
[ch
>> 4];
2780 *buf
++ = hexchars
[ch
& 0xf];
2789 get_traceframe_number (void)
2791 return traceframe_number
;
2794 /* Make the traceframe NUM be the current trace frame. Does nothing
2795 if NUM is already current. */
2798 set_traceframe_number (int num
)
2802 if (traceframe_number
== num
)
2804 /* Nothing to do. */
2808 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
2811 warning (_("could not change traceframe"));
2813 traceframe_number
= newnum
;
2815 /* Changing the traceframe changes our view of registers and of the
2817 registers_changed ();
2820 /* A cleanup used when switching away and back from tfind mode. */
2822 struct current_traceframe_cleanup
2824 /* The traceframe we were inspecting. */
2825 int traceframe_number
;
2829 do_restore_current_traceframe_cleanup (void *arg
)
2831 struct current_traceframe_cleanup
*old
= arg
;
2833 set_traceframe_number (old
->traceframe_number
);
2837 restore_current_traceframe_cleanup_dtor (void *arg
)
2839 struct current_traceframe_cleanup
*old
= arg
;
2845 make_cleanup_restore_current_traceframe (void)
2847 struct current_traceframe_cleanup
*old
;
2849 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
2850 old
->traceframe_number
= traceframe_number
;
2852 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
2853 restore_current_traceframe_cleanup_dtor
);
2856 /* Given a number and address, return an uploaded tracepoint with that
2857 number, creating if necessary. */
2859 struct uploaded_tp
*
2860 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
2862 struct uploaded_tp
*utp
;
2864 for (utp
= *utpp
; utp
; utp
= utp
->next
)
2865 if (utp
->number
== num
&& utp
->addr
== addr
)
2867 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
2868 memset (utp
, 0, sizeof (struct uploaded_tp
));
2871 utp
->actions
= NULL
;
2872 utp
->step_actions
= NULL
;
2873 utp
->cmd_strings
= NULL
;
2880 free_uploaded_tps (struct uploaded_tp
**utpp
)
2882 struct uploaded_tp
*next_one
;
2886 next_one
= (*utpp
)->next
;
2892 /* Given a number and address, return an uploaded tracepoint with that
2893 number, creating if necessary. */
2895 struct uploaded_tsv
*
2896 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
2898 struct uploaded_tsv
*utsv
;
2900 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
2901 if (utsv
->number
== num
)
2903 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
2904 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
2906 utsv
->next
= *utsvp
;
2912 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
2914 struct uploaded_tsv
*next_one
;
2918 next_one
= (*utsvp
)->next
;
2924 /* Look for an existing tracepoint that seems similar enough to the
2925 uploaded one. Enablement isn't compared, because the user can
2926 toggle that freely, and may have done so in anticipation of the
2930 find_matching_tracepoint (struct uploaded_tp
*utp
)
2932 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
2934 struct breakpoint
*t
;
2935 struct bp_location
*loc
;
2937 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2939 if (t
->type
== utp
->type
2940 && t
->step_count
== utp
->step
2941 && t
->pass_count
== utp
->pass
2942 /* FIXME also test conditionals and actions */
2945 /* Scan the locations for an address match. */
2946 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2948 if (loc
->address
== utp
->addr
)
2956 /* Given a list of tracepoints uploaded from a target, attempt to
2957 match them up with existing tracepoints, and create new ones if not
2961 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
2963 struct uploaded_tp
*utp
;
2964 struct breakpoint
*t
;
2966 /* Look for GDB tracepoints that match up with our uploaded versions. */
2967 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
2969 t
= find_matching_tracepoint (utp
);
2971 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
2972 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2975 t
= create_tracepoint_from_upload (utp
);
2977 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
2978 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2980 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
2981 utp
->number
, paddress (get_current_arch (), utp
->addr
));
2983 /* Whether found or created, record the number used by the
2984 target, to help with mapping target tracepoints back to their
2985 counterparts here. */
2987 t
->number_on_target
= utp
->number
;
2990 free_uploaded_tps (uploaded_tps
);
2993 /* Trace state variables don't have much to identify them beyond their
2994 name, so just use that to detect matches. */
2996 struct trace_state_variable
*
2997 find_matching_tsv (struct uploaded_tsv
*utsv
)
3002 return find_trace_state_variable (utsv
->name
);
3005 struct trace_state_variable
*
3006 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
3008 const char *namebase
;
3011 struct trace_state_variable
*tsv
;
3015 namebase
= utsv
->name
;
3016 sprintf (buf
, "%s", namebase
);
3021 sprintf (buf
, "%s_%d", namebase
, try_num
++);
3024 /* Fish for a name that is not in use. */
3025 /* (should check against all internal vars?) */
3026 while (find_trace_state_variable (buf
))
3027 sprintf (buf
, "%s_%d", namebase
, try_num
++);
3029 /* We have an available name, create the variable. */
3030 tsv
= create_trace_state_variable (xstrdup (buf
));
3031 tsv
->initial_value
= utsv
->initial_value
;
3032 tsv
->builtin
= utsv
->builtin
;
3037 /* Given a list of uploaded trace state variables, try to match them
3038 up with existing variables, or create additional ones. */
3041 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
3044 struct uploaded_tsv
*utsv
;
3045 struct trace_state_variable
*tsv
;
3048 /* Most likely some numbers will have to be reassigned as part of
3049 the merge, so clear them all in anticipation. */
3050 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3053 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
3055 tsv
= find_matching_tsv (utsv
);
3057 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
3058 tsv
->name
, utsv
->number
);
3061 tsv
= create_tsv_from_upload (utsv
);
3062 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
3063 tsv
->name
, utsv
->number
);
3065 /* Give precedence to numberings that come from the target. */
3067 tsv
->number
= utsv
->number
;
3070 /* Renumber everything that didn't get a target-assigned number. */
3072 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3073 if (tsv
->number
> highest
)
3074 highest
= tsv
->number
;
3077 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3078 if (tsv
->number
== 0)
3079 tsv
->number
= highest
++;
3081 free_uploaded_tsvs (uploaded_tsvs
);
3084 /* target tfile command */
3086 struct target_ops tfile_ops
;
3088 /* Fill in tfile_ops with its defined operations and properties. */
3090 #define TRACE_HEADER_SIZE 8
3092 char *trace_filename
;
3094 off_t trace_frames_offset
;
3097 int trace_regblock_size
;
3099 static void tfile_interp_line (char *line
,
3100 struct uploaded_tp
**utpp
,
3101 struct uploaded_tsv
**utsvp
);
3104 tfile_open (char *filename
, int from_tty
)
3107 struct cleanup
*old_chain
;
3110 char header
[TRACE_HEADER_SIZE
];
3111 char linebuf
[1000]; /* should be max remote packet size or so */
3113 int bytes
, i
, gotten
;
3114 struct trace_status
*ts
;
3115 struct uploaded_tp
*uploaded_tps
= NULL
;
3116 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3118 target_preopen (from_tty
);
3120 error (_("No trace file specified."));
3122 filename
= tilde_expand (filename
);
3123 if (!IS_ABSOLUTE_PATH(filename
))
3125 temp
= concat (current_directory
, "/", filename
, (char *)NULL
);
3130 old_chain
= make_cleanup (xfree
, filename
);
3132 flags
= O_BINARY
| O_LARGEFILE
;
3134 scratch_chan
= open (filename
, flags
, 0);
3135 if (scratch_chan
< 0)
3136 perror_with_name (filename
);
3138 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3140 discard_cleanups (old_chain
); /* Don't free filename any more */
3141 unpush_target (&tfile_ops
);
3143 push_target (&tfile_ops
);
3145 trace_filename
= xstrdup (filename
);
3146 trace_fd
= scratch_chan
;
3149 /* Read the file header and test for validity. */
3150 gotten
= read (trace_fd
, &header
, TRACE_HEADER_SIZE
);
3152 perror_with_name (trace_filename
);
3153 else if (gotten
< TRACE_HEADER_SIZE
)
3154 error (_("Premature end of file while reading trace file"));
3156 bytes
+= TRACE_HEADER_SIZE
;
3157 if (!(header
[0] == 0x7f
3158 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
3159 error (_("File is not a valid trace file."));
3161 trace_regblock_size
= 0;
3162 ts
= current_trace_status ();
3163 /* We know we're working with a file. */
3165 /* Set defaults in case there is no status line. */
3166 ts
->running_known
= 0;
3167 ts
->stop_reason
= trace_stop_reason_unknown
;
3168 ts
->traceframe_count
= -1;
3169 ts
->buffer_free
= 0;
3171 /* Read through a section of newline-terminated lines that
3172 define things like tracepoints. */
3176 gotten
= read (trace_fd
, &byte
, 1);
3178 perror_with_name (trace_filename
);
3179 else if (gotten
< 1)
3180 error (_("Premature end of file while reading trace file"));
3185 /* Empty line marks end of the definition section. */
3190 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
3193 linebuf
[i
++] = byte
;
3195 error (_("Excessively long lines in trace file"));
3198 /* Add the file's tracepoints and variables into the current mix. */
3200 /* Get trace state variables first, they may be checked when parsing
3201 uploaded commands. */
3202 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3204 merge_uploaded_tracepoints (&uploaded_tps
);
3206 /* Record the starting offset of the binary trace data. */
3207 trace_frames_offset
= bytes
;
3209 /* If we don't have a blocksize, we can't interpret the
3211 if (trace_regblock_size
== 0)
3212 error (_("No register block size recorded in trace file"));
3213 if (ts
->traceframe_count
<= 0)
3215 warning ("No traceframes present in this file.");
3219 #define TFILE_PID (1)
3220 inferior_appeared (current_inferior (), TFILE_PID
);
3221 inferior_ptid
= pid_to_ptid (TFILE_PID
);
3222 add_thread_silent (inferior_ptid
);
3224 post_create_inferior (&tfile_ops
, from_tty
);
3227 /* FIXME this will get defined in MI patch submission */
3228 tfind_1 (tfind_number
, 0, 0, 0, 0);
3232 /* Interpret the given line from the definitions part of the trace
3236 tfile_interp_line (char *line
,
3237 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
3241 if (strncmp (p
, "R ", strlen ("R ")) == 0)
3244 trace_regblock_size
= strtol (p
, &p
, 16);
3246 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
3248 p
+= strlen ("status ");
3249 parse_trace_status (p
, current_trace_status ());
3251 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
3253 p
+= strlen ("tp ");
3254 parse_tracepoint_definition (p
, utpp
);
3256 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
3258 p
+= strlen ("tsv ");
3259 parse_tsv_definition (p
, utsvp
);
3262 warning ("Ignoring trace file definition \"%s\"", line
);
3265 /* Parse the part of trace status syntax that is shared between
3266 the remote protocol and the trace file reader. */
3268 extern char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
3271 parse_trace_status (char *line
, struct trace_status
*ts
)
3273 char *p
= line
, *p1
, *p2
, *p_temp
;
3276 ts
->running_known
= 1;
3277 ts
->running
= (*p
++ == '1');
3278 ts
->stop_reason
= trace_stop_reason_unknown
;
3279 xfree (ts
->error_desc
);
3280 ts
->error_desc
= NULL
;
3281 ts
->traceframe_count
= -1;
3282 ts
->traceframes_created
= -1;
3283 ts
->buffer_free
= -1;
3284 ts
->buffer_size
= -1;
3288 p1
= strchr (p
, ':');
3290 error (_("Malformed trace status, at %s\n\
3291 Status line: '%s'\n"), p
, line
);
3292 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
3294 p
= unpack_varlen_hex (++p1
, &val
);
3295 ts
->stop_reason
= trace_buffer_full
;
3297 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
3299 p
= unpack_varlen_hex (++p1
, &val
);
3300 ts
->stop_reason
= trace_never_run
;
3302 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
], p1
- p
) == 0)
3304 p
= unpack_varlen_hex (++p1
, &val
);
3305 ts
->stop_reason
= tracepoint_passcount
;
3306 ts
->stopping_tracepoint
= val
;
3308 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
3310 p
= unpack_varlen_hex (++p1
, &val
);
3311 ts
->stop_reason
= tstop_command
;
3313 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
3315 p2
= strchr (++p1
, ':');
3320 ts
->error_desc
= xmalloc ((p2
- p1
) / 2 + 1);
3321 end
= hex2bin (p1
, ts
->error_desc
, (p2
- p1
) / 2);
3322 ts
->error_desc
[end
] = '\0';
3325 ts
->error_desc
= xstrdup ("");
3327 p
= unpack_varlen_hex (++p2
, &val
);
3328 ts
->stopping_tracepoint
= val
;
3329 ts
->stop_reason
= tracepoint_error
;
3331 else if (strncmp (p
, "tframes", p1
- p
) == 0)
3333 p
= unpack_varlen_hex (++p1
, &val
);
3334 ts
->traceframe_count
= val
;
3336 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
3338 p
= unpack_varlen_hex (++p1
, &val
);
3339 ts
->traceframes_created
= val
;
3341 else if (strncmp (p
, "tfree", p1
- p
) == 0)
3343 p
= unpack_varlen_hex (++p1
, &val
);
3344 ts
->buffer_free
= val
;
3346 else if (strncmp (p
, "tsize", p1
- p
) == 0)
3348 p
= unpack_varlen_hex (++p1
, &val
);
3349 ts
->buffer_size
= val
;
3353 /* Silently skip unknown optional info. */
3354 p_temp
= strchr (p1
+ 1, ';');
3358 /* Must be at the end. */
3364 /* Given a line of text defining a part of a tracepoint, parse it into
3365 an "uploaded tracepoint". */
3368 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
3372 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
, start
;
3373 int enabled
, i
, end
;
3375 char *cond
, *srctype
, *src
, *buf
;
3376 struct uploaded_tp
*utp
= NULL
;
3379 /* Both tracepoint and action definitions start with the same number
3380 and address sequence. */
3382 p
= unpack_varlen_hex (p
, &num
);
3383 p
++; /* skip a colon */
3384 p
= unpack_varlen_hex (p
, &addr
);
3385 p
++; /* skip a colon */
3388 enabled
= (*p
++ == 'E');
3389 p
++; /* skip a colon */
3390 p
= unpack_varlen_hex (p
, &step
);
3391 p
++; /* skip a colon */
3392 p
= unpack_varlen_hex (p
, &pass
);
3393 type
= bp_tracepoint
;
3395 /* Thumb through optional fields. */
3398 p
++; /* skip a colon */
3401 type
= bp_fast_tracepoint
;
3403 p
= unpack_varlen_hex (p
, &orig_size
);
3408 p
= unpack_varlen_hex (p
, &xlen
);
3409 p
++; /* skip a comma */
3410 cond
= (char *) xmalloc (2 * xlen
+ 1);
3411 strncpy (cond
, p
, 2 * xlen
);
3412 cond
[2 * xlen
] = '\0';
3416 warning (_("Unrecognized char '%c' in tracepoint definition, skipping rest"), *p
);
3418 utp
= get_uploaded_tp (num
, addr
, utpp
);
3420 utp
->enabled
= enabled
;
3425 else if (piece
== 'A')
3427 utp
= get_uploaded_tp (num
, addr
, utpp
);
3428 VEC_safe_push (char_ptr
, utp
->actions
, xstrdup (p
));
3430 else if (piece
== 'S')
3432 utp
= get_uploaded_tp (num
, addr
, utpp
);
3433 VEC_safe_push (char_ptr
, utp
->step_actions
, xstrdup (p
));
3435 else if (piece
== 'Z')
3437 /* Parse a chunk of source form definition. */
3438 utp
= get_uploaded_tp (num
, addr
, utpp
);
3440 p
= strchr (p
, ':');
3441 p
++; /* skip a colon */
3442 p
= unpack_varlen_hex (p
, &start
);
3443 p
++; /* skip a colon */
3444 p
= unpack_varlen_hex (p
, &xlen
);
3445 p
++; /* skip a colon */
3447 buf
= alloca (strlen (line
));
3449 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3452 if (strncmp (srctype
, "at:", strlen ("at:")) == 0)
3453 utp
->at_string
= xstrdup (buf
);
3454 else if (strncmp (srctype
, "cond:", strlen ("cond:")) == 0)
3455 utp
->cond_string
= xstrdup (buf
);
3456 else if (strncmp (srctype
, "cmd:", strlen ("cmd:")) == 0)
3457 VEC_safe_push (char_ptr
, utp
->cmd_strings
, xstrdup (buf
));
3461 /* Don't error out, the target might be sending us optional
3462 info that we don't care about. */
3463 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece
);
3467 /* Convert a textual description of a trace state variable into an
3471 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
3474 ULONGEST num
, initval
, builtin
;
3476 struct uploaded_tsv
*utsv
= NULL
;
3478 buf
= alloca (strlen (line
));
3481 p
= unpack_varlen_hex (p
, &num
);
3482 p
++; /* skip a colon */
3483 p
= unpack_varlen_hex (p
, &initval
);
3484 p
++; /* skip a colon */
3485 p
= unpack_varlen_hex (p
, &builtin
);
3486 p
++; /* skip a colon */
3487 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3490 utsv
= get_uploaded_tsv (num
, utsvp
);
3491 utsv
->initial_value
= initval
;
3492 utsv
->builtin
= builtin
;
3493 utsv
->name
= xstrdup (buf
);
3496 /* Close the trace file and generally clean up. */
3499 tfile_close (int quitting
)
3506 pid
= ptid_get_pid (inferior_ptid
);
3507 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff */
3508 exit_inferior_silent (pid
);
3513 xfree (trace_filename
);
3517 tfile_files_info (struct target_ops
*t
)
3519 /* (it would be useful to mention the name of the file) */
3520 printf_filtered ("Looking at a trace file.\n");
3523 /* The trace status for a file is that tracing can never be run. */
3526 tfile_get_trace_status (struct trace_status
*ts
)
3528 /* Other bits of trace status were collected as part of opening the
3529 trace files, so nothing to do here. */
3534 /* Given the position of a traceframe in the file, figure out what
3535 address the frame was collected at. This would normally be the
3536 value of a collected PC register, but if not available, we
3540 tfile_get_traceframe_address (off_t tframe_offset
)
3544 struct breakpoint
*tp
;
3545 off_t saved_offset
= cur_offset
;
3548 /* FIXME dig pc out of collected registers */
3550 /* Fall back to using tracepoint address. */
3551 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
3552 gotten
= read (trace_fd
, &tpnum
, 2);
3554 perror_with_name (trace_filename
);
3555 else if (gotten
< 2)
3556 error (_("Premature end of file while reading trace file"));
3558 tp
= get_tracepoint_by_number_on_target (tpnum
);
3559 /* FIXME this is a poor heuristic if multiple locations */
3561 addr
= tp
->loc
->address
;
3563 /* Restore our seek position. */
3564 cur_offset
= saved_offset
;
3565 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3569 /* Given a type of search and some parameters, scan the collection of
3570 traceframes in the file looking for a match. When found, return
3571 both the traceframe and tracepoint number, otherwise -1 for
3575 tfile_trace_find (enum trace_find_type type
, int num
,
3576 ULONGEST addr1
, ULONGEST addr2
, int *tpp
)
3579 int tfnum
= 0, found
= 0, gotten
;
3581 struct breakpoint
*tp
;
3582 off_t offset
, tframe_offset
;
3585 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
3586 offset
= trace_frames_offset
;
3589 tframe_offset
= offset
;
3590 gotten
= read (trace_fd
, &tpnum
, 2);
3592 perror_with_name (trace_filename
);
3593 else if (gotten
< 2)
3594 error (_("Premature end of file while reading trace file"));
3598 gotten
= read (trace_fd
, &data_size
, 4);
3600 perror_with_name (trace_filename
);
3601 else if (gotten
< 4)
3602 error (_("Premature end of file while reading trace file"));
3611 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3612 if (tfaddr
== addr1
)
3616 tp
= get_tracepoint (num
);
3617 if (tp
&& tpnum
== tp
->number_on_target
)
3621 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3622 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
3626 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3627 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
3631 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
3637 cur_offset
= offset
;
3638 cur_data_size
= data_size
;
3641 /* Skip past the traceframe's data. */
3642 lseek (trace_fd
, data_size
, SEEK_CUR
);
3643 offset
+= data_size
;
3644 /* Update our own count of traceframes. */
3647 /* Did not find what we were looking for. */
3653 /* Look for a block of saved registers in the traceframe, and get the
3654 requested register from it. */
3657 tfile_fetch_registers (struct target_ops
*ops
,
3658 struct regcache
*regcache
, int regno
)
3660 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3662 int i
, pos
, offset
, regn
, regsize
, gotten
, pc_regno
;
3663 unsigned short mlen
;
3666 /* An uninitialized reg size says we're not going to be
3667 successful at getting register blocks. */
3668 if (!trace_regblock_size
)
3671 regs
= alloca (trace_regblock_size
);
3673 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3675 while (pos
< cur_data_size
)
3677 gotten
= read (trace_fd
, &block_type
, 1);
3679 perror_with_name (trace_filename
);
3680 else if (gotten
< 1)
3681 error (_("Premature end of file while reading trace file"));
3687 gotten
= read (trace_fd
, regs
, trace_regblock_size
);
3689 perror_with_name (trace_filename
);
3690 else if (gotten
< trace_regblock_size
)
3691 error (_("Premature end of file while reading trace file"));
3693 /* Assume the block is laid out in GDB register number order,
3694 each register with the size that it has in GDB. */
3696 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3698 regsize
= register_size (gdbarch
, regn
);
3699 /* Make sure we stay within block bounds. */
3700 if (offset
+ regsize
>= trace_regblock_size
)
3702 if (!regcache_valid_p (regcache
, regn
))
3706 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
3709 else if (regno
== -1)
3711 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
3718 lseek (trace_fd
, 8, SEEK_CUR
);
3719 gotten
= read (trace_fd
, &mlen
, 2);
3721 perror_with_name (trace_filename
);
3722 else if (gotten
< 2)
3723 error (_("Premature end of file while reading trace file"));
3724 lseek (trace_fd
, mlen
, SEEK_CUR
);
3725 pos
+= (8 + 2 + mlen
);
3728 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3732 error ("Unknown block type '%c' (0x%x) in trace frame",
3733 block_type
, block_type
);
3738 /* We get here if no register data has been found. Although we
3739 don't like making up numbers, GDB has all manner of troubles when
3740 the target says some register is not available. Filling in with
3741 zeroes is a reasonable fallback. */
3742 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3743 regcache_raw_supply (regcache
, regn
, NULL
);
3745 /* We can often usefully guess that the PC is going to be the same
3746 as the address of the tracepoint. */
3747 pc_regno
= gdbarch_pc_regnum (gdbarch
);
3748 if (pc_regno
>= 0 && (regno
== -1 || regno
== pc_regno
))
3750 struct breakpoint
*tp
= get_tracepoint (tracepoint_number
);
3754 /* But don't try to guess if tracepoint is multi-location... */
3757 warning ("Tracepoint %d has multiple locations, cannot infer $pc",
3761 /* ... or does while-stepping. */
3762 if (tp
->step_count
> 0)
3764 warning ("Tracepoint %d does while-stepping, cannot infer $pc",
3769 store_unsigned_integer (regs
, register_size (gdbarch
, pc_regno
),
3770 gdbarch_byte_order (gdbarch
),
3772 regcache_raw_supply (regcache
, pc_regno
, regs
);
3778 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
3779 const char *annex
, gdb_byte
*readbuf
,
3780 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
3784 ULONGEST maddr
, amt
;
3785 unsigned short mlen
;
3787 /* We're only doing regular memory for now. */
3788 if (object
!= TARGET_OBJECT_MEMORY
)
3791 if (readbuf
== NULL
)
3792 error ("tfile_xfer_partial: trace file is read-only");
3794 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3796 while (pos
< cur_data_size
)
3798 gotten
= read (trace_fd
, &block_type
, 1);
3800 perror_with_name (trace_filename
);
3801 else if (gotten
< 1)
3802 error (_("Premature end of file while reading trace file"));
3807 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3808 pos
+= trace_regblock_size
;
3811 gotten
= read (trace_fd
, &maddr
, 8);
3813 perror_with_name (trace_filename
);
3814 else if (gotten
< 8)
3815 error (_("Premature end of file while reading trace file"));
3817 gotten
= read (trace_fd
, &mlen
, 2);
3819 perror_with_name (trace_filename
);
3820 else if (gotten
< 2)
3821 error (_("Premature end of file while reading trace file"));
3822 /* If the block includes the first part of the desired
3823 range, return as much it has; GDB will re-request the
3824 remainder, which might be in a different block of this
3826 if (maddr
<= offset
&& offset
< (maddr
+ mlen
))
3828 amt
= (maddr
+ mlen
) - offset
;
3832 read (trace_fd
, readbuf
, amt
);
3835 lseek (trace_fd
, mlen
, SEEK_CUR
);
3836 pos
+= (8 + 2 + mlen
);
3839 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3843 error ("Unknown block type '%c' (0x%x) in traceframe",
3844 block_type
, block_type
);
3849 /* It's unduly pedantic to refuse to look at the executable for
3850 read-only pieces; so do the equivalent of readonly regions aka
3852 /* FIXME account for relocation at some point */
3859 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
3861 if ((s
->flags
& SEC_LOAD
) == 0 ||
3862 (s
->flags
& SEC_READONLY
) == 0)
3866 size
= bfd_get_section_size (s
);
3867 if (lma
<= offset
&& offset
< (lma
+ size
))
3869 amt
= (lma
+ size
) - offset
;
3873 amt
= bfd_get_section_contents (exec_bfd
, s
,
3874 readbuf
, offset
- lma
, amt
);
3880 /* Indicate failure to find the requested memory block. */
3884 /* Iterate through the blocks of a trace frame, looking for a 'V'
3885 block with a matching tsv number. */
3888 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
3891 int pos
, vnum
, gotten
;
3892 unsigned short mlen
;
3894 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3896 while (pos
< cur_data_size
)
3898 gotten
= read (trace_fd
, &block_type
, 1);
3900 perror_with_name (trace_filename
);
3901 else if (gotten
< 1)
3902 error (_("Premature end of file while reading trace file"));
3907 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3908 pos
+= trace_regblock_size
;
3911 lseek (trace_fd
, 8, SEEK_CUR
);
3912 gotten
= read (trace_fd
, &mlen
, 2);
3914 perror_with_name (trace_filename
);
3915 else if (gotten
< 2)
3916 error (_("Premature end of file while reading trace file"));
3917 lseek (trace_fd
, mlen
, SEEK_CUR
);
3918 pos
+= (8 + 2 + mlen
);
3921 gotten
= read (trace_fd
, &vnum
, 4);
3923 perror_with_name (trace_filename
);
3924 else if (gotten
< 4)
3925 error (_("Premature end of file while reading trace file"));
3928 gotten
= read (trace_fd
, val
, 8);
3930 perror_with_name (trace_filename
);
3931 else if (gotten
< 8)
3932 error (_("Premature end of file while reading trace file"));
3935 lseek (trace_fd
, 8, SEEK_CUR
);
3939 error ("Unknown block type '%c' (0x%x) in traceframe",
3940 block_type
, block_type
);
3944 /* Didn't find anything. */
3949 tfile_has_all_memory (struct target_ops
*ops
)
3955 tfile_has_memory (struct target_ops
*ops
)
3961 tfile_has_stack (struct target_ops
*ops
)
3967 tfile_has_registers (struct target_ops
*ops
)
3973 init_tfile_ops (void)
3975 tfile_ops
.to_shortname
= "tfile";
3976 tfile_ops
.to_longname
= "Local trace dump file";
3978 "Use a trace file as a target. Specify the filename of the trace file.";
3979 tfile_ops
.to_open
= tfile_open
;
3980 tfile_ops
.to_close
= tfile_close
;
3981 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
3982 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
3983 tfile_ops
.to_files_info
= tfile_files_info
;
3984 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
3985 tfile_ops
.to_trace_find
= tfile_trace_find
;
3986 tfile_ops
.to_get_trace_state_variable_value
= tfile_get_trace_state_variable_value
;
3987 /* core_stratum might seem more logical, but GDB doesn't like having
3988 more than one core_stratum vector. */
3989 tfile_ops
.to_stratum
= process_stratum
;
3990 tfile_ops
.to_has_all_memory
= tfile_has_all_memory
;
3991 tfile_ops
.to_has_memory
= tfile_has_memory
;
3992 tfile_ops
.to_has_stack
= tfile_has_stack
;
3993 tfile_ops
.to_has_registers
= tfile_has_registers
;
3994 tfile_ops
.to_magic
= OPS_MAGIC
;
3997 /* module initialization */
3999 _initialize_tracepoint (void)
4001 struct cmd_list_element
*c
;
4003 traceframe_number
= -1;
4004 tracepoint_number
= -1;
4006 if (tracepoint_list
.list
== NULL
)
4008 tracepoint_list
.listsize
= 128;
4009 tracepoint_list
.list
= xmalloc
4010 (tracepoint_list
.listsize
* sizeof (struct memrange
));
4012 if (tracepoint_list
.aexpr_list
== NULL
)
4014 tracepoint_list
.aexpr_listsize
= 128;
4015 tracepoint_list
.aexpr_list
= xmalloc
4016 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
4019 if (stepping_list
.list
== NULL
)
4021 stepping_list
.listsize
= 128;
4022 stepping_list
.list
= xmalloc
4023 (stepping_list
.listsize
* sizeof (struct memrange
));
4026 if (stepping_list
.aexpr_list
== NULL
)
4028 stepping_list
.aexpr_listsize
= 128;
4029 stepping_list
.aexpr_list
= xmalloc
4030 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
4033 add_info ("scope", scope_info
,
4034 _("List the variables local to a scope"));
4036 add_cmd ("tracepoints", class_trace
, NULL
,
4037 _("Tracing of program execution without stopping the program."),
4040 add_com ("tdump", class_trace
, trace_dump_command
,
4041 _("Print everything collected at the current tracepoint."));
4043 add_com ("tsave", class_trace
, trace_save_command
, _("\
4044 Save the trace data to a file.\n\
4045 Use the '-r' option to direct the target to save directly to the file,\n\
4046 using its own filesystem."));
4048 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
4049 Define a trace state variable.\n\
4050 Argument is a $-prefixed name, optionally followed\n\
4051 by '=' and an expression that sets the initial value\n\
4052 at the start of tracing."));
4053 set_cmd_completer (c
, expression_completer
);
4055 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
4056 Delete one or more trace state variables.\n\
4057 Arguments are the names of the variables to delete.\n\
4058 If no arguments are supplied, delete all variables."), &deletelist
);
4059 /* FIXME add a trace variable completer */
4061 add_info ("tvariables", tvariables_info
, _("\
4062 Status of trace state variables and their values.\n\
4065 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
4066 Select a trace frame;\n\
4067 No argument means forward by one frame; '-' means backward by one frame."),
4068 &tfindlist
, "tfind ", 1, &cmdlist
);
4070 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
4071 Select a trace frame whose PC is outside the given range (exclusive).\n\
4072 Usage: tfind outside addr1, addr2"),
4075 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
4076 Select a trace frame whose PC is in the given range (inclusive).\n\
4077 Usage: tfind range addr1,addr2"),
4080 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
4081 Select a trace frame by source line.\n\
4082 Argument can be a line number (with optional source file), \n\
4083 a function name, or '*' followed by an address.\n\
4084 Default argument is 'the next source line that was traced'."),
4087 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
4088 Select a trace frame by tracepoint number.\n\
4089 Default is the tracepoint for the current trace frame."),
4092 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
4093 Select a trace frame by PC.\n\
4094 Default is the current PC, or the PC of the current trace frame."),
4097 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
4098 Synonym for 'none'.\n\
4099 De-select any trace frame and resume 'live' debugging."),
4102 add_cmd ("none", class_trace
, trace_find_none_command
,
4103 _("De-select any trace frame and resume 'live' debugging."),
4106 add_cmd ("start", class_trace
, trace_find_start_command
,
4107 _("Select the first trace frame in the trace buffer."),
4110 add_com ("tstatus", class_trace
, trace_status_command
,
4111 _("Display the status of the current trace data collection."));
4113 add_com ("tstop", class_trace
, trace_stop_command
,
4114 _("Stop trace data collection."));
4116 add_com ("tstart", class_trace
, trace_start_command
,
4117 _("Start trace data collection."));
4119 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
4120 Ends a list of commands or actions.\n\
4121 Several GDB commands allow you to enter a list of commands or actions.\n\
4122 Entering \"end\" on a line by itself is the normal way to terminate\n\
4124 Note: the \"end\" command cannot be used at the gdb prompt."));
4126 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
4127 Specify single-stepping behavior at a tracepoint.\n\
4128 Argument is number of instructions to trace in single-step mode\n\
4129 following the tracepoint. This command is normally followed by\n\
4130 one or more \"collect\" commands, to specify what to collect\n\
4131 while single-stepping.\n\n\
4132 Note: this command can only be used in a tracepoint \"actions\" list."));
4134 add_com_alias ("ws", "while-stepping", class_alias
, 0);
4135 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
4137 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
4138 Specify one or more data items to be collected at a tracepoint.\n\
4139 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
4140 collect all data (variables, registers) referenced by that expression.\n\
4141 Also accepts the following special arguments:\n\
4142 $regs -- all registers.\n\
4143 $args -- all function arguments.\n\
4144 $locals -- all variables local to the block/function scope.\n\
4145 Note: this command can only be used in a tracepoint \"actions\" list."));
4147 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
4148 Specify one or more expressions to be evaluated at a tracepoint.\n\
4149 Accepts a comma-separated list of (one or more) expressions.\n\
4150 The result of each evaluation will be discarded.\n\
4151 Note: this command can only be used in a tracepoint \"actions\" list."));
4153 add_com ("actions", class_trace
, trace_actions_command
, _("\
4154 Specify the actions to be taken at a tracepoint.\n\
4155 Tracepoint actions may include collecting of specified data, \n\
4156 single-stepping, or enabling/disabling other tracepoints, \n\
4157 depending on target's capabilities."));
4159 default_collect
= xstrdup ("");
4160 add_setshow_string_cmd ("default-collect", class_trace
,
4161 &default_collect
, _("\
4162 Set the list of expressions to collect by default"), _("\
4163 Show the list of expressions to collect by default"), NULL
,
4165 &setlist
, &showlist
);
4167 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
4168 &disconnected_tracing
, _("\
4169 Set whether tracing continues after GDB disconnects."), _("\
4170 Show whether tracing continues after GDB disconnects."), _("\
4171 Use this to continue a tracing run even if GDB disconnects\n\
4172 or detaches from the target. You can reconnect later and look at\n\
4173 trace data collected in the meantime."),
4174 set_disconnected_tracing
,
4179 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
4180 &circular_trace_buffer
, _("\
4181 Set target's use of circular trace buffer."), _("\
4182 Show target's use of circular trace buffer."), _("\
4183 Use this to make the trace buffer into a circular buffer,\n\
4184 which will discard traceframes (oldest first) instead of filling\n\
4185 up and stopping the trace run."),
4186 set_circular_trace_buffer
,
4193 add_target (&tfile_ops
);