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"));
1632 switch (ts
->stop_reason
)
1634 case trace_never_run
:
1635 printf_filtered (_("No trace has been run on the target.\n"));
1638 printf_filtered (_("Trace stopped by a tstop command.\n"));
1640 case trace_buffer_full
:
1641 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1643 case trace_disconnected
:
1644 printf_filtered (_("Trace stopped because of disconnection.\n"));
1646 case tracepoint_passcount
:
1647 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1648 ts
->stopping_tracepoint
);
1650 case tracepoint_error
:
1651 if (ts
->stopping_tracepoint
)
1652 printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
1653 ts
->error_desc
, ts
->stopping_tracepoint
);
1655 printf_filtered (_("Trace stopped by an error (%s).\n"),
1658 case trace_stop_reason_unknown
:
1659 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1662 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1668 if (ts
->traceframes_created
>= 0
1669 && ts
->traceframe_count
!= ts
->traceframes_created
)
1671 printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
1672 ts
->traceframe_count
, ts
->traceframes_created
);
1674 else if (ts
->traceframe_count
>= 0)
1676 printf_filtered (_("Collected %d trace frames.\n"),
1677 ts
->traceframe_count
);
1680 if (ts
->buffer_free
>= 0)
1682 if (ts
->buffer_size
>= 0)
1684 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1685 ts
->buffer_free
, ts
->buffer_size
);
1686 if (ts
->buffer_size
> 0)
1687 printf_filtered (_(" (%d%% full)"),
1688 ((int) ((((long long) (ts
->buffer_size
1689 - ts
->buffer_free
)) * 100)
1690 / ts
->buffer_size
)));
1691 printf_filtered (_(".\n"));
1694 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1698 if (ts
->disconnected_tracing
)
1699 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1701 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1703 if (ts
->circular_buffer
)
1704 printf_filtered (_("Trace buffer is circular.\n"));
1706 /* Now report on what we're doing with tfind. */
1707 if (traceframe_number
>= 0)
1708 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1709 traceframe_number
, tracepoint_number
);
1711 printf_filtered (_("Not looking at any trace frame.\n"));
1714 /* Report the trace status to uiout, in a way suitable for MI, and not
1715 suitable for CLI. If ON_STOP is true, suppress a few fields that
1716 are not meaningful in the -trace-stop response.
1718 The implementation is essentially parallel to trace_status_command, but
1719 merging them will result in unreadable code. */
1721 trace_status_mi (int on_stop
)
1723 struct trace_status
*ts
= current_trace_status ();
1725 char *string_status
;
1727 status
= target_get_trace_status (ts
);
1729 if (status
== -1 && !ts
->from_file
)
1731 ui_out_field_string (uiout
, "supported", "0");
1736 ui_out_field_string (uiout
, "supported", "file");
1738 ui_out_field_string (uiout
, "supported", "1");
1740 gdb_assert (ts
->running_known
);
1744 ui_out_field_string (uiout
, "running", "1");
1746 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
1747 Given that the frontend gets the status either on -trace-stop, or from
1748 -trace-status after re-connection, it does not seem like this
1749 information is necessary for anything. It is not necessary for either
1750 figuring the vital state of the target nor for navigation of trace
1751 frames. If the frontend wants to show the current state is some
1752 configure dialog, it can request the value when such dialog is
1753 invoked by the user. */
1757 char *stop_reason
= NULL
;
1758 int stopping_tracepoint
= -1;
1761 ui_out_field_string (uiout
, "running", "0");
1763 if (ts
->stop_reason
!= trace_stop_reason_unknown
)
1765 switch (ts
->stop_reason
)
1768 stop_reason
= "request";
1770 case trace_buffer_full
:
1771 stop_reason
= "overflow";
1773 case trace_disconnected
:
1774 stop_reason
= "disconnection";
1776 case tracepoint_passcount
:
1777 stop_reason
= "passcount";
1778 stopping_tracepoint
= ts
->stopping_tracepoint
;
1780 case tracepoint_error
:
1781 stop_reason
= "error";
1782 stopping_tracepoint
= ts
->stopping_tracepoint
;
1788 ui_out_field_string (uiout
, "stop-reason", stop_reason
);
1789 if (stopping_tracepoint
!= -1)
1790 ui_out_field_int (uiout
, "stopping-tracepoint",
1791 stopping_tracepoint
);
1792 if (ts
->stop_reason
== tracepoint_error
)
1793 ui_out_field_string (uiout
, "error-description",
1799 if (ts
->traceframe_count
!= -1)
1800 ui_out_field_int (uiout
, "frames", ts
->traceframe_count
);
1801 if (ts
->traceframes_created
!= -1)
1802 ui_out_field_int (uiout
, "frames-created", ts
->traceframes_created
);
1803 if (ts
->buffer_size
!= -1)
1804 ui_out_field_int (uiout
, "buffer-size", ts
->buffer_size
);
1805 if (ts
->buffer_free
!= -1)
1806 ui_out_field_int (uiout
, "buffer-free", ts
->buffer_free
);
1808 ui_out_field_int (uiout
, "disconnected", ts
->disconnected_tracing
);
1809 ui_out_field_int (uiout
, "circular", ts
->circular_buffer
);
1812 /* This function handles the details of what to do about an ongoing
1813 tracing run if the user has asked to detach or otherwise disconnect
1816 disconnect_tracing (int from_tty
)
1818 /* It can happen that the target that was tracing went away on its
1819 own, and we didn't notice. Get a status update, and if the
1820 current target doesn't even do tracing, then assume it's not
1822 if (target_get_trace_status (current_trace_status ()) < 0)
1823 current_trace_status ()->running
= 0;
1825 /* If running interactively, give the user the option to cancel and
1826 then decide what to do differently with the run. Scripts are
1827 just going to disconnect and let the target deal with it,
1828 according to how it's been instructed previously via
1829 disconnected-tracing. */
1830 if (current_trace_status ()->running
&& from_tty
)
1832 if (current_trace_status ()->disconnected_tracing
)
1834 if (!query (_("Trace is running and will continue after detach; detach anyway? ")))
1835 error (_("Not confirmed."));
1839 if (!query (_("Trace is running but will stop on detach; detach anyway? ")))
1840 error (_("Not confirmed."));
1844 /* Also we want to be out of tfind mode, otherwise things can get
1845 confusing upon reconnection. Just use these calls instead of
1846 full tfind_1 behavior because we're in the middle of detaching,
1847 and there's no point to updating current stack frame etc. */
1848 set_traceframe_number (-1);
1849 set_traceframe_context (NULL
);
1852 /* Worker function for the various flavors of the tfind command. */
1854 tfind_1 (enum trace_find_type type
, int num
,
1855 ULONGEST addr1
, ULONGEST addr2
,
1858 int target_frameno
= -1, target_tracept
= -1;
1859 struct frame_id old_frame_id
;
1861 struct breakpoint
*tp
;
1863 old_frame_id
= get_frame_id (get_current_frame ());
1865 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
1868 if (type
== tfind_number
1870 && target_frameno
== -1)
1872 /* We told the target to get out of tfind mode, and it did. */
1874 else if (target_frameno
== -1)
1876 /* A request for a non-existant trace frame has failed.
1877 Our response will be different, depending on FROM_TTY:
1879 If FROM_TTY is true, meaning that this command was
1880 typed interactively by the user, then give an error
1881 and DO NOT change the state of traceframe_number etc.
1883 However if FROM_TTY is false, meaning that we're either
1884 in a script, a loop, or a user-defined command, then
1885 DON'T give an error, but DO change the state of
1886 traceframe_number etc. to invalid.
1888 The rationalle is that if you typed the command, you
1889 might just have committed a typo or something, and you'd
1890 like to NOT lose your current debugging state. However
1891 if you're in a user-defined command or especially in a
1892 loop, then you need a way to detect that the command
1893 failed WITHOUT aborting. This allows you to write
1894 scripts that search thru the trace buffer until the end,
1895 and then continue on to do something else. */
1898 error (_("Target failed to find requested trace frame."));
1902 printf_filtered ("End of trace buffer.\n");
1903 #if 0 /* dubious now? */
1904 /* The following will not recurse, since it's
1906 trace_find_command ("-1", from_tty
);
1911 tp
= get_tracepoint_by_number_on_target (target_tracept
);
1913 reinit_frame_cache ();
1914 registers_changed ();
1915 target_dcache_invalidate ();
1916 set_traceframe_num (target_frameno
);
1917 set_tracepoint_num (tp
? tp
->number
: target_tracept
);
1918 if (target_frameno
== -1)
1919 set_traceframe_context (NULL
);
1921 set_traceframe_context (get_current_frame ());
1923 if (traceframe_number
>= 0)
1925 /* Use different branches for MI and CLI to make CLI messages
1927 if (ui_out_is_mi_like_p (uiout
))
1929 ui_out_field_string (uiout
, "found", "1");
1930 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
1931 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
1935 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1936 traceframe_number
, tracepoint_number
);
1941 if (ui_out_is_mi_like_p (uiout
))
1942 ui_out_field_string (uiout
, "found", "0");
1944 printf_unfiltered (_("No trace frame found"));
1947 /* If we're in nonstop mode and getting out of looking at trace
1948 frames, there won't be any current frame to go back to and
1951 && (has_stack_frames () || traceframe_number
>= 0))
1953 enum print_what print_what
;
1955 /* NOTE: in immitation of the step command, try to determine
1956 whether we have made a transition from one function to
1957 another. If so, we'll print the "stack frame" (ie. the new
1958 function and it's arguments) -- otherwise we'll just show the
1961 if (frame_id_eq (old_frame_id
,
1962 get_frame_id (get_current_frame ())))
1963 print_what
= SRC_LINE
;
1965 print_what
= SRC_AND_LOC
;
1967 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
1972 /* trace_find_command takes a trace frame number n,
1973 sends "QTFrame:<n>" to the target,
1974 and accepts a reply that may contain several optional pieces
1975 of information: a frame number, a tracepoint number, and an
1976 indication of whether this is a trap frame or a stepping frame.
1978 The minimal response is just "OK" (which indicates that the
1979 target does not give us a frame number or a tracepoint number).
1980 Instead of that, the target may send us a string containing
1982 F<hexnum> (gives the selected frame number)
1983 T<hexnum> (gives the selected tracepoint number)
1988 trace_find_command (char *args
, int from_tty
)
1989 { /* this should only be called with a numeric argument */
1992 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1993 error ("May not look at trace frames while trace is running.");
1995 if (args
== 0 || *args
== 0)
1996 { /* TFIND with no args means find NEXT trace frame. */
1997 if (traceframe_number
== -1)
1998 frameno
= 0; /* "next" is first one */
2000 frameno
= traceframe_number
+ 1;
2002 else if (0 == strcmp (args
, "-"))
2004 if (traceframe_number
== -1)
2005 error (_("not debugging trace buffer"));
2006 else if (from_tty
&& traceframe_number
== 0)
2007 error (_("already at start of trace buffer"));
2009 frameno
= traceframe_number
- 1;
2011 /* A hack to work around eval's need for fp to have been collected. */
2012 else if (0 == strcmp (args
, "-1"))
2015 frameno
= parse_and_eval_long (args
);
2018 error (_("invalid input (%d is less than zero)"), frameno
);
2020 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
2025 trace_find_end_command (char *args
, int from_tty
)
2027 trace_find_command ("-1", from_tty
);
2032 trace_find_none_command (char *args
, int from_tty
)
2034 trace_find_command ("-1", from_tty
);
2039 trace_find_start_command (char *args
, int from_tty
)
2041 trace_find_command ("0", from_tty
);
2044 /* tfind pc command */
2046 trace_find_pc_command (char *args
, int from_tty
)
2051 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2052 error ("May not look at trace frames while trace is running.");
2054 if (args
== 0 || *args
== 0)
2055 pc
= regcache_read_pc (get_current_regcache ());
2057 pc
= parse_and_eval_address (args
);
2059 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
2062 /* tfind tracepoint command */
2064 trace_find_tracepoint_command (char *args
, int from_tty
)
2067 struct breakpoint
*tp
;
2069 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2070 error ("May not look at trace frames while trace is running.");
2072 if (args
== 0 || *args
== 0)
2074 if (tracepoint_number
== -1)
2075 error (_("No current tracepoint -- please supply an argument."));
2077 tdp
= tracepoint_number
; /* default is current TDP */
2080 tdp
= parse_and_eval_long (args
);
2082 /* If we have the tracepoint on hand, use the number that the
2083 target knows about (which may be different if we disconnected
2084 and reconnected). */
2085 tp
= get_tracepoint (tdp
);
2087 tdp
= tp
->number_on_target
;
2089 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
2092 /* TFIND LINE command:
2094 This command will take a sourceline for argument, just like BREAK
2095 or TRACE (ie. anything that "decode_line_1" can handle).
2097 With no argument, this command will find the next trace frame
2098 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2101 trace_find_line_command (char *args
, int from_tty
)
2103 static CORE_ADDR start_pc
, end_pc
;
2104 struct symtabs_and_lines sals
;
2105 struct symtab_and_line sal
;
2106 struct cleanup
*old_chain
;
2107 char startpc_str
[40], endpc_str
[40];
2109 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2110 error ("May not look at trace frames while trace is running.");
2112 if (args
== 0 || *args
== 0)
2114 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2116 sals
.sals
= (struct symtab_and_line
*)
2117 xmalloc (sizeof (struct symtab_and_line
));
2122 sals
= decode_line_spec (args
, 1);
2126 old_chain
= make_cleanup (xfree
, sals
.sals
);
2127 if (sal
.symtab
== 0)
2128 error (_("No line number information available."));
2130 if (sal
.line
> 0 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2132 if (start_pc
== end_pc
)
2134 printf_filtered ("Line %d of \"%s\"",
2135 sal
.line
, sal
.symtab
->filename
);
2137 printf_filtered (" is at address ");
2138 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2140 printf_filtered (" but contains no code.\n");
2141 sal
= find_pc_line (start_pc
, 0);
2143 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2144 && start_pc
!= end_pc
)
2145 printf_filtered ("Attempting to find line %d instead.\n",
2148 error (_("Cannot find a good line."));
2152 /* Is there any case in which we get here, and have an address
2153 which the user would want to see? If we have debugging
2154 symbols and no line numbers? */
2155 error (_("Line number %d is out of range for \"%s\"."),
2156 sal
.line
, sal
.symtab
->filename
);
2158 /* Find within range of stated line. */
2160 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2162 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2163 do_cleanups (old_chain
);
2166 /* tfind range command */
2168 trace_find_range_command (char *args
, int from_tty
)
2170 static CORE_ADDR start
, stop
;
2171 char start_str
[40], stop_str
[40];
2174 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2175 error ("May not look at trace frames while trace is running.");
2177 if (args
== 0 || *args
== 0)
2178 { /* XXX FIXME: what should default behavior be? */
2179 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2183 if (0 != (tmp
= strchr (args
, ',')))
2185 *tmp
++ = '\0'; /* terminate start address */
2186 while (isspace ((int) *tmp
))
2188 start
= parse_and_eval_address (args
);
2189 stop
= parse_and_eval_address (tmp
);
2192 { /* no explicit end address? */
2193 start
= parse_and_eval_address (args
);
2194 stop
= start
+ 1; /* ??? */
2197 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2200 /* tfind outside command */
2202 trace_find_outside_command (char *args
, int from_tty
)
2204 CORE_ADDR start
, stop
;
2205 char start_str
[40], stop_str
[40];
2208 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2209 error ("May not look at trace frames while trace is running.");
2211 if (args
== 0 || *args
== 0)
2212 { /* XXX FIXME: what should default behavior be? */
2213 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2217 if (0 != (tmp
= strchr (args
, ',')))
2219 *tmp
++ = '\0'; /* terminate start address */
2220 while (isspace ((int) *tmp
))
2222 start
= parse_and_eval_address (args
);
2223 stop
= parse_and_eval_address (tmp
);
2226 { /* no explicit end address? */
2227 start
= parse_and_eval_address (args
);
2228 stop
= start
+ 1; /* ??? */
2231 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2234 /* info scope command: list the locals for a scope. */
2236 scope_info (char *args
, int from_tty
)
2238 struct symtabs_and_lines sals
;
2240 struct minimal_symbol
*msym
;
2241 struct block
*block
;
2242 char **canonical
, *symname
, *save_args
= args
;
2243 struct dict_iterator iter
;
2245 struct gdbarch
*gdbarch
;
2248 if (args
== 0 || *args
== 0)
2249 error (_("requires an argument (function, line or *addr) to define a scope"));
2251 sals
= decode_line_1 (&args
, 1, NULL
, 0, &canonical
, NULL
);
2252 if (sals
.nelts
== 0)
2253 return; /* presumably decode_line_1 has already warned */
2255 /* Resolve line numbers to PC */
2256 resolve_sal_pc (&sals
.sals
[0]);
2257 block
= block_for_pc (sals
.sals
[0].pc
);
2261 QUIT
; /* allow user to bail out with ^C */
2262 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2264 QUIT
; /* allow user to bail out with ^C */
2266 printf_filtered ("Scope for %s:\n", save_args
);
2269 symname
= SYMBOL_PRINT_NAME (sym
);
2270 if (symname
== NULL
|| *symname
== '\0')
2271 continue; /* probably botched, certainly useless */
2273 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2275 printf_filtered ("Symbol %s is ", symname
);
2276 switch (SYMBOL_CLASS (sym
))
2279 case LOC_UNDEF
: /* messed up symbol? */
2280 printf_filtered ("a bogus symbol, class %d.\n",
2281 SYMBOL_CLASS (sym
));
2282 count
--; /* don't count this one */
2285 printf_filtered ("a constant with value %ld (0x%lx)",
2286 SYMBOL_VALUE (sym
), SYMBOL_VALUE (sym
));
2288 case LOC_CONST_BYTES
:
2289 printf_filtered ("constant bytes: ");
2290 if (SYMBOL_TYPE (sym
))
2291 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2292 fprintf_filtered (gdb_stdout
, " %02x",
2293 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2296 printf_filtered ("in static storage at address ");
2297 printf_filtered ("%s", paddress (gdbarch
,
2298 SYMBOL_VALUE_ADDRESS (sym
)));
2301 /* GDBARCH is the architecture associated with the objfile
2302 the symbol is defined in; the target architecture may be
2303 different, and may provide additional registers. However,
2304 we do not know the target architecture at this point.
2305 We assume the objfile architecture will contain all the
2306 standard registers that occur in debug info in that
2308 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2310 if (SYMBOL_IS_ARGUMENT (sym
))
2311 printf_filtered ("an argument in register $%s",
2312 gdbarch_register_name (gdbarch
, regno
));
2314 printf_filtered ("a local variable in register $%s",
2315 gdbarch_register_name (gdbarch
, regno
));
2318 printf_filtered ("an argument at stack/frame offset %ld",
2319 SYMBOL_VALUE (sym
));
2322 printf_filtered ("a local variable at frame offset %ld",
2323 SYMBOL_VALUE (sym
));
2326 printf_filtered ("a reference argument at offset %ld",
2327 SYMBOL_VALUE (sym
));
2329 case LOC_REGPARM_ADDR
:
2330 /* Note comment at LOC_REGISTER. */
2331 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2332 printf_filtered ("the address of an argument, in register $%s",
2333 gdbarch_register_name (gdbarch
, regno
));
2336 printf_filtered ("a typedef.\n");
2339 printf_filtered ("a label at address ");
2340 printf_filtered ("%s", paddress (gdbarch
,
2341 SYMBOL_VALUE_ADDRESS (sym
)));
2344 printf_filtered ("a function at address ");
2345 printf_filtered ("%s",
2346 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2348 case LOC_UNRESOLVED
:
2349 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2352 printf_filtered ("Unresolved Static");
2355 printf_filtered ("static storage at address ");
2356 printf_filtered ("%s",
2357 paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (msym
)));
2360 case LOC_OPTIMIZED_OUT
:
2361 printf_filtered ("optimized out.\n");
2364 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, gdb_stdout
);
2367 if (SYMBOL_TYPE (sym
))
2368 printf_filtered (", length %d.\n",
2369 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2371 if (BLOCK_FUNCTION (block
))
2374 block
= BLOCK_SUPERBLOCK (block
);
2377 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2381 /* worker function (cleanup) */
2383 replace_comma (void *data
)
2390 /* Helper for trace_dump_command. Dump the action list starting at
2391 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2392 actions of the body of a while-stepping action. STEPPING_FRAME is
2393 set if the current traceframe was determined to be a while-stepping
2397 trace_dump_actions (struct command_line
*action
,
2398 int stepping_actions
, int stepping_frame
,
2401 char *action_exp
, *next_comma
;
2403 for (; action
!= NULL
; action
= action
->next
)
2405 struct cmd_list_element
*cmd
;
2407 QUIT
; /* allow user to bail out with ^C */
2408 action_exp
= action
->line
;
2409 while (isspace ((int) *action_exp
))
2412 /* The collection actions to be done while stepping are
2413 bracketed by the commands "while-stepping" and "end". */
2415 if (*action_exp
== '#') /* comment line */
2418 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2420 error (_("Bad action list item: %s"), action_exp
);
2422 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2426 for (i
= 0; i
< action
->body_count
; ++i
)
2427 trace_dump_actions (action
->body_list
[i
],
2428 1, stepping_frame
, from_tty
);
2430 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2432 /* Display the collected data.
2433 For the trap frame, display only what was collected at
2434 the trap. Likewise for stepping frames, display only
2435 what was collected while stepping. This means that the
2436 two boolean variables, STEPPING_FRAME and
2437 STEPPING_ACTIONS should be equal. */
2438 if (stepping_frame
== stepping_actions
)
2441 { /* repeat over a comma-separated list */
2442 QUIT
; /* allow user to bail out with ^C */
2443 if (*action_exp
== ',')
2445 while (isspace ((int) *action_exp
))
2448 next_comma
= strchr (action_exp
, ',');
2450 if (0 == strncasecmp (action_exp
, "$reg", 4))
2451 registers_info (NULL
, from_tty
);
2452 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2453 locals_info (NULL
, from_tty
);
2454 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2455 args_info (NULL
, from_tty
);
2460 make_cleanup (replace_comma
, next_comma
);
2463 printf_filtered ("%s = ", action_exp
);
2464 output_command (action_exp
, from_tty
);
2465 printf_filtered ("\n");
2469 action_exp
= next_comma
;
2471 while (action_exp
&& *action_exp
== ',');
2477 /* The tdump command. */
2480 trace_dump_command (char *args
, int from_tty
)
2482 struct regcache
*regcache
;
2483 struct breakpoint
*t
;
2484 int stepping_frame
= 0;
2485 struct bp_location
*loc
;
2486 char *line
, *default_collect_line
= NULL
;
2487 struct command_line
*actions
, *default_collect_action
= NULL
;
2488 struct cleanup
*old_chain
= NULL
;
2490 if (tracepoint_number
== -1)
2492 warning (_("No current trace frame."));
2496 t
= get_tracepoint (tracepoint_number
);
2499 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2502 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2503 tracepoint_number
, traceframe_number
);
2505 /* The current frame is a trap frame if the frame PC is equal
2506 to the tracepoint PC. If not, then the current frame was
2507 collected during single-stepping. */
2509 regcache
= get_current_regcache ();
2511 /* If the traceframe's address matches any of the tracepoint's
2512 locations, assume it is a direct hit rather than a while-stepping
2513 frame. (FIXME this is not reliable, should record each frame's
2516 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2517 if (loc
->address
== regcache_read_pc (regcache
))
2520 actions
= breakpoint_commands (t
);
2522 /* If there is a default-collect list, make up a collect command,
2523 prepend to the tracepoint's commands, and pass the whole mess to
2524 the trace dump scanner. We need to validate because
2525 default-collect might have been junked since the trace run. */
2526 if (*default_collect
)
2528 default_collect_line
= xstrprintf ("collect %s", default_collect
);
2529 old_chain
= make_cleanup (xfree
, default_collect_line
);
2530 line
= default_collect_line
;
2531 validate_actionline (&line
, t
);
2532 default_collect_action
= xmalloc (sizeof (struct command_line
));
2533 make_cleanup (xfree
, default_collect_action
);
2534 default_collect_action
->next
= actions
;
2535 default_collect_action
->line
= line
;
2536 actions
= default_collect_action
;
2539 trace_dump_actions (actions
, 0, stepping_frame
, from_tty
);
2541 if (*default_collect
)
2542 do_cleanups (old_chain
);
2545 /* Encode a piece of a tracepoint's source-level definition in a form
2546 that is suitable for both protocol and saving in files. */
2547 /* This version does not do multiple encodes for long strings; it should
2548 return an offset to the next piece to encode. FIXME */
2551 encode_source_string (int tpnum
, ULONGEST addr
,
2552 char *srctype
, char *src
, char *buf
, int buf_size
)
2554 if (80 + strlen (srctype
) > buf_size
)
2555 error (_("Buffer too small for source encoding"));
2556 sprintf (buf
, "%x:%s:%s:%x:%x:",
2557 tpnum
, phex_nz (addr
, sizeof (addr
)), srctype
, 0, (int) strlen (src
));
2558 if (strlen (buf
) + strlen (src
) * 2 >= buf_size
)
2559 error (_("Source string too long for buffer"));
2560 bin2hex (src
, buf
+ strlen (buf
), 0);
2564 extern int trace_regblock_size
;
2566 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2567 non-zero, the save is performed on the target, otherwise GDB obtains all
2568 trace data and saves it locally. */
2571 trace_save (const char *filename
, int target_does_save
)
2573 struct cleanup
*cleanup
;
2575 struct trace_status
*ts
= current_trace_status ();
2578 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
2579 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
2583 ULONGEST offset
= 0;
2584 #define MAX_TRACE_UPLOAD 2000
2585 gdb_byte buf
[MAX_TRACE_UPLOAD
];
2588 /* If the target is to save the data to a file on its own, then just
2589 send the command and be done with it. */
2590 if (target_does_save
)
2592 err
= target_save_trace_data (filename
);
2594 error (_("Target failed to save trace data to '%s'."),
2599 /* Get the trace status first before opening the file, so if the
2600 target is losing, we can get out without touching files. */
2601 status
= target_get_trace_status (ts
);
2603 pathname
= tilde_expand (filename
);
2604 cleanup
= make_cleanup (xfree
, pathname
);
2606 fp
= fopen (pathname
, "w");
2608 error (_("Unable to open file '%s' for saving trace data (%s)"),
2609 filename
, safe_strerror (errno
));
2610 make_cleanup_fclose (fp
);
2612 /* Write a file header, with a high-bit-set char to indicate a
2613 binary file, plus a hint as what this file is, and a version
2614 number in case of future needs. */
2615 written
= fwrite ("\x7fTRACE0\n", 8, 1, fp
);
2617 perror_with_name (pathname
);
2619 /* Write descriptive info. */
2621 /* Write out the size of a register block. */
2622 fprintf (fp
, "R %x\n", trace_regblock_size
);
2624 /* Write out status of the tracing run (aka "tstatus" info). */
2625 fprintf (fp
, "status %c;%s",
2626 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
2627 if (ts
->stop_reason
== tracepoint_error
)
2629 char *buf
= (char *) alloca (strlen (ts
->error_desc
) * 2 + 1);
2630 bin2hex ((gdb_byte
*) ts
->error_desc
, buf
, 0);
2631 fprintf (fp
, ":%s", buf
);
2633 fprintf (fp
, ":%x", ts
->stopping_tracepoint
);
2634 if (ts
->traceframe_count
>= 0)
2635 fprintf (fp
, ";tframes:%x", ts
->traceframe_count
);
2636 if (ts
->traceframes_created
>= 0)
2637 fprintf (fp
, ";tcreated:%x", ts
->traceframes_created
);
2638 if (ts
->buffer_free
>= 0)
2639 fprintf (fp
, ";tfree:%x", ts
->buffer_free
);
2640 if (ts
->buffer_size
>= 0)
2641 fprintf (fp
, ";tsize:%x", ts
->buffer_size
);
2642 if (ts
->disconnected_tracing
)
2643 fprintf (fp
, ";disconn:%x", ts
->disconnected_tracing
);
2644 if (ts
->circular_buffer
)
2645 fprintf (fp
, ";circular:%x", ts
->circular_buffer
);
2648 /* Note that we want to upload tracepoints and save those, rather
2649 than simply writing out the local ones, because the user may have
2650 changed tracepoints in GDB in preparation for a future tracing
2651 run, or maybe just mass-deleted all types of breakpoints as part
2652 of cleaning up. So as not to contaminate the session, leave the
2653 data in its uploaded form, don't make into real tracepoints. */
2655 /* Get trace state variables first, they may be checked when parsing
2656 uploaded commands. */
2658 target_upload_trace_state_variables (&uploaded_tsvs
);
2660 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2666 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
2667 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
2670 fprintf (fp
, "tsv %x:%s:%x:%s\n",
2671 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
2672 utsv
->builtin
, buf
);
2678 free_uploaded_tsvs (&uploaded_tsvs
);
2680 target_upload_tracepoints (&uploaded_tps
);
2682 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
2684 fprintf (fp
, "tp T%x:%s:%c:%x:%x",
2685 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2686 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
2687 if (utp
->type
== bp_fast_tracepoint
)
2688 fprintf (fp
, ":F%x", utp
->orig_size
);
2690 fprintf (fp
, ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
2693 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
2694 fprintf (fp
, "tp A%x:%s:%s\n",
2695 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
2696 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
2697 fprintf (fp
, "tp S%x:%s:%s\n",
2698 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
2701 encode_source_string (utp
->number
, utp
->addr
,
2702 "at", utp
->at_string
, buf
, MAX_TRACE_UPLOAD
);
2703 fprintf (fp
, "tp Z%s\n", buf
);
2705 if (utp
->cond_string
)
2707 encode_source_string (utp
->number
, utp
->addr
,
2708 "cond", utp
->cond_string
, buf
, MAX_TRACE_UPLOAD
);
2709 fprintf (fp
, "tp Z%s\n", buf
);
2711 for (a
= 0; VEC_iterate (char_ptr
, utp
->cmd_strings
, a
, act
); ++a
)
2713 encode_source_string (utp
->number
, utp
->addr
, "cmd", act
,
2714 buf
, MAX_TRACE_UPLOAD
);
2715 fprintf (fp
, "tp Z%s\n", buf
);
2719 free_uploaded_tps (&uploaded_tps
);
2721 /* Mark the end of the definition section. */
2724 /* Get and write the trace data proper. We ask for big blocks, in
2725 the hopes of efficiency, but will take less if the target has
2726 packet size limitations or some such. */
2729 gotten
= target_get_raw_trace_data (buf
, offset
, MAX_TRACE_UPLOAD
);
2731 error (_("Failure to get requested trace buffer data"));
2732 /* No more data is forthcoming, we're done. */
2735 written
= fwrite (buf
, gotten
, 1, fp
);
2737 perror_with_name (pathname
);
2741 /* Mark the end of trace data. (We know that gotten is 0 at this point.) */
2742 written
= fwrite (&gotten
, 4, 1, fp
);
2744 perror_with_name (pathname
);
2746 do_cleanups (cleanup
);
2750 trace_save_command (char *args
, int from_tty
)
2752 int target_does_save
= 0;
2754 char *filename
= NULL
;
2755 struct cleanup
*back_to
;
2758 error_no_arg (_("file in which to save trace data"));
2760 argv
= gdb_buildargv (args
);
2761 back_to
= make_cleanup_freeargv (argv
);
2763 for (; *argv
; ++argv
)
2765 if (strcmp (*argv
, "-r") == 0)
2766 target_does_save
= 1;
2767 else if (**argv
== '-')
2768 error (_("unknown option `%s'"), *argv
);
2774 error_no_arg (_("file in which to save trace data"));
2776 trace_save (filename
, target_does_save
);
2779 printf_filtered (_("Trace data saved to file '%s'.\n"), args
);
2781 do_cleanups (back_to
);
2784 /* Tell the target what to do with an ongoing tracing run if GDB
2785 disconnects for some reason. */
2788 send_disconnected_tracing_value (int value
)
2790 target_set_disconnected_tracing (value
);
2794 set_disconnected_tracing (char *args
, int from_tty
,
2795 struct cmd_list_element
*c
)
2797 send_disconnected_tracing_value (disconnected_tracing
);
2801 set_circular_trace_buffer (char *args
, int from_tty
,
2802 struct cmd_list_element
*c
)
2804 target_set_circular_trace_buffer (circular_trace_buffer
);
2807 /* Convert the memory pointed to by mem into hex, placing result in buf.
2808 * Return a pointer to the last char put in buf (null)
2809 * "stolen" from sparc-stub.c
2812 static const char hexchars
[] = "0123456789abcdef";
2815 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
2823 *buf
++ = hexchars
[ch
>> 4];
2824 *buf
++ = hexchars
[ch
& 0xf];
2833 get_traceframe_number (void)
2835 return traceframe_number
;
2838 /* Make the traceframe NUM be the current trace frame. Does nothing
2839 if NUM is already current. */
2842 set_traceframe_number (int num
)
2846 if (traceframe_number
== num
)
2848 /* Nothing to do. */
2852 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
2855 warning (_("could not change traceframe"));
2857 traceframe_number
= newnum
;
2859 /* Changing the traceframe changes our view of registers and of the
2861 registers_changed ();
2864 /* A cleanup used when switching away and back from tfind mode. */
2866 struct current_traceframe_cleanup
2868 /* The traceframe we were inspecting. */
2869 int traceframe_number
;
2873 do_restore_current_traceframe_cleanup (void *arg
)
2875 struct current_traceframe_cleanup
*old
= arg
;
2877 set_traceframe_number (old
->traceframe_number
);
2881 restore_current_traceframe_cleanup_dtor (void *arg
)
2883 struct current_traceframe_cleanup
*old
= arg
;
2889 make_cleanup_restore_current_traceframe (void)
2891 struct current_traceframe_cleanup
*old
;
2893 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
2894 old
->traceframe_number
= traceframe_number
;
2896 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
2897 restore_current_traceframe_cleanup_dtor
);
2900 /* Given a number and address, return an uploaded tracepoint with that
2901 number, creating if necessary. */
2903 struct uploaded_tp
*
2904 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
2906 struct uploaded_tp
*utp
;
2908 for (utp
= *utpp
; utp
; utp
= utp
->next
)
2909 if (utp
->number
== num
&& utp
->addr
== addr
)
2911 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
2912 memset (utp
, 0, sizeof (struct uploaded_tp
));
2915 utp
->actions
= NULL
;
2916 utp
->step_actions
= NULL
;
2917 utp
->cmd_strings
= NULL
;
2924 free_uploaded_tps (struct uploaded_tp
**utpp
)
2926 struct uploaded_tp
*next_one
;
2930 next_one
= (*utpp
)->next
;
2936 /* Given a number and address, return an uploaded tracepoint with that
2937 number, creating if necessary. */
2939 struct uploaded_tsv
*
2940 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
2942 struct uploaded_tsv
*utsv
;
2944 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
2945 if (utsv
->number
== num
)
2947 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
2948 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
2950 utsv
->next
= *utsvp
;
2956 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
2958 struct uploaded_tsv
*next_one
;
2962 next_one
= (*utsvp
)->next
;
2968 /* Look for an existing tracepoint that seems similar enough to the
2969 uploaded one. Enablement isn't compared, because the user can
2970 toggle that freely, and may have done so in anticipation of the
2974 find_matching_tracepoint (struct uploaded_tp
*utp
)
2976 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
2978 struct breakpoint
*t
;
2979 struct bp_location
*loc
;
2981 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2983 if (t
->type
== utp
->type
2984 && t
->step_count
== utp
->step
2985 && t
->pass_count
== utp
->pass
2986 /* FIXME also test conditionals and actions */
2989 /* Scan the locations for an address match. */
2990 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2992 if (loc
->address
== utp
->addr
)
3000 /* Given a list of tracepoints uploaded from a target, attempt to
3001 match them up with existing tracepoints, and create new ones if not
3005 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
3007 struct uploaded_tp
*utp
;
3008 struct breakpoint
*t
;
3010 /* Look for GDB tracepoints that match up with our uploaded versions. */
3011 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
3013 t
= find_matching_tracepoint (utp
);
3015 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
3016 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
3019 t
= create_tracepoint_from_upload (utp
);
3021 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
3022 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
3024 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
3025 utp
->number
, paddress (get_current_arch (), utp
->addr
));
3027 /* Whether found or created, record the number used by the
3028 target, to help with mapping target tracepoints back to their
3029 counterparts here. */
3031 t
->number_on_target
= utp
->number
;
3034 free_uploaded_tps (uploaded_tps
);
3037 /* Trace state variables don't have much to identify them beyond their
3038 name, so just use that to detect matches. */
3040 struct trace_state_variable
*
3041 find_matching_tsv (struct uploaded_tsv
*utsv
)
3046 return find_trace_state_variable (utsv
->name
);
3049 struct trace_state_variable
*
3050 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
3052 const char *namebase
;
3055 struct trace_state_variable
*tsv
;
3059 namebase
= utsv
->name
;
3060 sprintf (buf
, "%s", namebase
);
3065 sprintf (buf
, "%s_%d", namebase
, try_num
++);
3068 /* Fish for a name that is not in use. */
3069 /* (should check against all internal vars?) */
3070 while (find_trace_state_variable (buf
))
3071 sprintf (buf
, "%s_%d", namebase
, try_num
++);
3073 /* We have an available name, create the variable. */
3074 tsv
= create_trace_state_variable (xstrdup (buf
));
3075 tsv
->initial_value
= utsv
->initial_value
;
3076 tsv
->builtin
= utsv
->builtin
;
3081 /* Given a list of uploaded trace state variables, try to match them
3082 up with existing variables, or create additional ones. */
3085 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
3088 struct uploaded_tsv
*utsv
;
3089 struct trace_state_variable
*tsv
;
3092 /* Most likely some numbers will have to be reassigned as part of
3093 the merge, so clear them all in anticipation. */
3094 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3097 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
3099 tsv
= find_matching_tsv (utsv
);
3101 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
3102 tsv
->name
, utsv
->number
);
3105 tsv
= create_tsv_from_upload (utsv
);
3106 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
3107 tsv
->name
, utsv
->number
);
3109 /* Give precedence to numberings that come from the target. */
3111 tsv
->number
= utsv
->number
;
3114 /* Renumber everything that didn't get a target-assigned number. */
3116 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3117 if (tsv
->number
> highest
)
3118 highest
= tsv
->number
;
3121 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3122 if (tsv
->number
== 0)
3123 tsv
->number
= highest
++;
3125 free_uploaded_tsvs (uploaded_tsvs
);
3128 /* target tfile command */
3130 struct target_ops tfile_ops
;
3132 /* Fill in tfile_ops with its defined operations and properties. */
3134 #define TRACE_HEADER_SIZE 8
3136 char *trace_filename
;
3138 off_t trace_frames_offset
;
3141 int trace_regblock_size
;
3143 static void tfile_interp_line (char *line
,
3144 struct uploaded_tp
**utpp
,
3145 struct uploaded_tsv
**utsvp
);
3148 tfile_open (char *filename
, int from_tty
)
3151 struct cleanup
*old_chain
;
3154 char header
[TRACE_HEADER_SIZE
];
3155 char linebuf
[1000]; /* should be max remote packet size or so */
3157 int bytes
, i
, gotten
;
3158 struct trace_status
*ts
;
3159 struct uploaded_tp
*uploaded_tps
= NULL
;
3160 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3162 target_preopen (from_tty
);
3164 error (_("No trace file specified."));
3166 filename
= tilde_expand (filename
);
3167 if (!IS_ABSOLUTE_PATH(filename
))
3169 temp
= concat (current_directory
, "/", filename
, (char *)NULL
);
3174 old_chain
= make_cleanup (xfree
, filename
);
3176 flags
= O_BINARY
| O_LARGEFILE
;
3178 scratch_chan
= open (filename
, flags
, 0);
3179 if (scratch_chan
< 0)
3180 perror_with_name (filename
);
3182 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3184 discard_cleanups (old_chain
); /* Don't free filename any more */
3185 unpush_target (&tfile_ops
);
3187 push_target (&tfile_ops
);
3189 trace_filename
= xstrdup (filename
);
3190 trace_fd
= scratch_chan
;
3193 /* Read the file header and test for validity. */
3194 gotten
= read (trace_fd
, &header
, TRACE_HEADER_SIZE
);
3196 perror_with_name (trace_filename
);
3197 else if (gotten
< TRACE_HEADER_SIZE
)
3198 error (_("Premature end of file while reading trace file"));
3200 bytes
+= TRACE_HEADER_SIZE
;
3201 if (!(header
[0] == 0x7f
3202 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
3203 error (_("File is not a valid trace file."));
3205 trace_regblock_size
= 0;
3206 ts
= current_trace_status ();
3207 /* We know we're working with a file. */
3209 /* Set defaults in case there is no status line. */
3210 ts
->running_known
= 0;
3211 ts
->stop_reason
= trace_stop_reason_unknown
;
3212 ts
->traceframe_count
= -1;
3213 ts
->buffer_free
= 0;
3214 ts
->disconnected_tracing
= 0;
3215 ts
->circular_buffer
= 0;
3217 /* Read through a section of newline-terminated lines that
3218 define things like tracepoints. */
3222 gotten
= read (trace_fd
, &byte
, 1);
3224 perror_with_name (trace_filename
);
3225 else if (gotten
< 1)
3226 error (_("Premature end of file while reading trace file"));
3231 /* Empty line marks end of the definition section. */
3236 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
3239 linebuf
[i
++] = byte
;
3241 error (_("Excessively long lines in trace file"));
3244 /* Add the file's tracepoints and variables into the current mix. */
3246 /* Get trace state variables first, they may be checked when parsing
3247 uploaded commands. */
3248 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3250 merge_uploaded_tracepoints (&uploaded_tps
);
3252 /* Record the starting offset of the binary trace data. */
3253 trace_frames_offset
= bytes
;
3255 /* If we don't have a blocksize, we can't interpret the
3257 if (trace_regblock_size
== 0)
3258 error (_("No register block size recorded in trace file"));
3259 if (ts
->traceframe_count
<= 0)
3261 warning ("No traceframes present in this file.");
3265 #define TFILE_PID (1)
3266 inferior_appeared (current_inferior (), TFILE_PID
);
3267 inferior_ptid
= pid_to_ptid (TFILE_PID
);
3268 add_thread_silent (inferior_ptid
);
3270 post_create_inferior (&tfile_ops
, from_tty
);
3273 /* FIXME this will get defined in MI patch submission */
3274 tfind_1 (tfind_number
, 0, 0, 0, 0);
3278 /* Interpret the given line from the definitions part of the trace
3282 tfile_interp_line (char *line
,
3283 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
3287 if (strncmp (p
, "R ", strlen ("R ")) == 0)
3290 trace_regblock_size
= strtol (p
, &p
, 16);
3292 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
3294 p
+= strlen ("status ");
3295 parse_trace_status (p
, current_trace_status ());
3297 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
3299 p
+= strlen ("tp ");
3300 parse_tracepoint_definition (p
, utpp
);
3302 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
3304 p
+= strlen ("tsv ");
3305 parse_tsv_definition (p
, utsvp
);
3308 warning ("Ignoring trace file definition \"%s\"", line
);
3311 /* Parse the part of trace status syntax that is shared between
3312 the remote protocol and the trace file reader. */
3314 extern char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
3317 parse_trace_status (char *line
, struct trace_status
*ts
)
3319 char *p
= line
, *p1
, *p2
, *p_temp
;
3322 ts
->running_known
= 1;
3323 ts
->running
= (*p
++ == '1');
3324 ts
->stop_reason
= trace_stop_reason_unknown
;
3325 xfree (ts
->error_desc
);
3326 ts
->error_desc
= NULL
;
3327 ts
->traceframe_count
= -1;
3328 ts
->traceframes_created
= -1;
3329 ts
->buffer_free
= -1;
3330 ts
->buffer_size
= -1;
3331 ts
->disconnected_tracing
= 0;
3332 ts
->circular_buffer
= 0;
3336 p1
= strchr (p
, ':');
3338 error (_("Malformed trace status, at %s\n\
3339 Status line: '%s'\n"), p
, line
);
3340 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
3342 p
= unpack_varlen_hex (++p1
, &val
);
3343 ts
->stop_reason
= trace_buffer_full
;
3345 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
3347 p
= unpack_varlen_hex (++p1
, &val
);
3348 ts
->stop_reason
= trace_never_run
;
3350 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
], p1
- p
) == 0)
3352 p
= unpack_varlen_hex (++p1
, &val
);
3353 ts
->stop_reason
= tracepoint_passcount
;
3354 ts
->stopping_tracepoint
= val
;
3356 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
3358 p
= unpack_varlen_hex (++p1
, &val
);
3359 ts
->stop_reason
= tstop_command
;
3361 else if (strncmp (p
, stop_reason_names
[trace_disconnected
], p1
- p
) == 0)
3363 p
= unpack_varlen_hex (++p1
, &val
);
3364 ts
->stop_reason
= trace_disconnected
;
3366 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
3368 p2
= strchr (++p1
, ':');
3373 ts
->error_desc
= xmalloc ((p2
- p1
) / 2 + 1);
3374 end
= hex2bin (p1
, ts
->error_desc
, (p2
- p1
) / 2);
3375 ts
->error_desc
[end
] = '\0';
3378 ts
->error_desc
= xstrdup ("");
3380 p
= unpack_varlen_hex (++p2
, &val
);
3381 ts
->stopping_tracepoint
= val
;
3382 ts
->stop_reason
= tracepoint_error
;
3384 else if (strncmp (p
, "tframes", p1
- p
) == 0)
3386 p
= unpack_varlen_hex (++p1
, &val
);
3387 ts
->traceframe_count
= val
;
3389 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
3391 p
= unpack_varlen_hex (++p1
, &val
);
3392 ts
->traceframes_created
= val
;
3394 else if (strncmp (p
, "tfree", p1
- p
) == 0)
3396 p
= unpack_varlen_hex (++p1
, &val
);
3397 ts
->buffer_free
= val
;
3399 else if (strncmp (p
, "tsize", p1
- p
) == 0)
3401 p
= unpack_varlen_hex (++p1
, &val
);
3402 ts
->buffer_size
= val
;
3404 else if (strncmp (p
, "disconn", p1
- p
) == 0)
3406 p
= unpack_varlen_hex (++p1
, &val
);
3407 ts
->disconnected_tracing
= val
;
3409 else if (strncmp (p
, "circular", p1
- p
) == 0)
3411 p
= unpack_varlen_hex (++p1
, &val
);
3412 ts
->circular_buffer
= val
;
3416 /* Silently skip unknown optional info. */
3417 p_temp
= strchr (p1
+ 1, ';');
3421 /* Must be at the end. */
3427 /* Given a line of text defining a part of a tracepoint, parse it into
3428 an "uploaded tracepoint". */
3431 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
3435 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
, start
;
3436 int enabled
, i
, end
;
3438 char *cond
, *srctype
, *src
, *buf
;
3439 struct uploaded_tp
*utp
= NULL
;
3442 /* Both tracepoint and action definitions start with the same number
3443 and address sequence. */
3445 p
= unpack_varlen_hex (p
, &num
);
3446 p
++; /* skip a colon */
3447 p
= unpack_varlen_hex (p
, &addr
);
3448 p
++; /* skip a colon */
3451 enabled
= (*p
++ == 'E');
3452 p
++; /* skip a colon */
3453 p
= unpack_varlen_hex (p
, &step
);
3454 p
++; /* skip a colon */
3455 p
= unpack_varlen_hex (p
, &pass
);
3456 type
= bp_tracepoint
;
3458 /* Thumb through optional fields. */
3461 p
++; /* skip a colon */
3464 type
= bp_fast_tracepoint
;
3466 p
= unpack_varlen_hex (p
, &orig_size
);
3471 p
= unpack_varlen_hex (p
, &xlen
);
3472 p
++; /* skip a comma */
3473 cond
= (char *) xmalloc (2 * xlen
+ 1);
3474 strncpy (cond
, p
, 2 * xlen
);
3475 cond
[2 * xlen
] = '\0';
3479 warning (_("Unrecognized char '%c' in tracepoint definition, skipping rest"), *p
);
3481 utp
= get_uploaded_tp (num
, addr
, utpp
);
3483 utp
->enabled
= enabled
;
3488 else if (piece
== 'A')
3490 utp
= get_uploaded_tp (num
, addr
, utpp
);
3491 VEC_safe_push (char_ptr
, utp
->actions
, xstrdup (p
));
3493 else if (piece
== 'S')
3495 utp
= get_uploaded_tp (num
, addr
, utpp
);
3496 VEC_safe_push (char_ptr
, utp
->step_actions
, xstrdup (p
));
3498 else if (piece
== 'Z')
3500 /* Parse a chunk of source form definition. */
3501 utp
= get_uploaded_tp (num
, addr
, utpp
);
3503 p
= strchr (p
, ':');
3504 p
++; /* skip a colon */
3505 p
= unpack_varlen_hex (p
, &start
);
3506 p
++; /* skip a colon */
3507 p
= unpack_varlen_hex (p
, &xlen
);
3508 p
++; /* skip a colon */
3510 buf
= alloca (strlen (line
));
3512 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3515 if (strncmp (srctype
, "at:", strlen ("at:")) == 0)
3516 utp
->at_string
= xstrdup (buf
);
3517 else if (strncmp (srctype
, "cond:", strlen ("cond:")) == 0)
3518 utp
->cond_string
= xstrdup (buf
);
3519 else if (strncmp (srctype
, "cmd:", strlen ("cmd:")) == 0)
3520 VEC_safe_push (char_ptr
, utp
->cmd_strings
, xstrdup (buf
));
3524 /* Don't error out, the target might be sending us optional
3525 info that we don't care about. */
3526 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece
);
3530 /* Convert a textual description of a trace state variable into an
3534 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
3537 ULONGEST num
, initval
, builtin
;
3539 struct uploaded_tsv
*utsv
= NULL
;
3541 buf
= alloca (strlen (line
));
3544 p
= unpack_varlen_hex (p
, &num
);
3545 p
++; /* skip a colon */
3546 p
= unpack_varlen_hex (p
, &initval
);
3547 p
++; /* skip a colon */
3548 p
= unpack_varlen_hex (p
, &builtin
);
3549 p
++; /* skip a colon */
3550 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3553 utsv
= get_uploaded_tsv (num
, utsvp
);
3554 utsv
->initial_value
= initval
;
3555 utsv
->builtin
= builtin
;
3556 utsv
->name
= xstrdup (buf
);
3559 /* Close the trace file and generally clean up. */
3562 tfile_close (int quitting
)
3569 pid
= ptid_get_pid (inferior_ptid
);
3570 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff */
3571 exit_inferior_silent (pid
);
3576 xfree (trace_filename
);
3580 tfile_files_info (struct target_ops
*t
)
3582 /* (it would be useful to mention the name of the file) */
3583 printf_filtered ("Looking at a trace file.\n");
3586 /* The trace status for a file is that tracing can never be run. */
3589 tfile_get_trace_status (struct trace_status
*ts
)
3591 /* Other bits of trace status were collected as part of opening the
3592 trace files, so nothing to do here. */
3597 /* Given the position of a traceframe in the file, figure out what
3598 address the frame was collected at. This would normally be the
3599 value of a collected PC register, but if not available, we
3603 tfile_get_traceframe_address (off_t tframe_offset
)
3607 struct breakpoint
*tp
;
3608 off_t saved_offset
= cur_offset
;
3611 /* FIXME dig pc out of collected registers */
3613 /* Fall back to using tracepoint address. */
3614 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
3615 gotten
= read (trace_fd
, &tpnum
, 2);
3617 perror_with_name (trace_filename
);
3618 else if (gotten
< 2)
3619 error (_("Premature end of file while reading trace file"));
3621 tp
= get_tracepoint_by_number_on_target (tpnum
);
3622 /* FIXME this is a poor heuristic if multiple locations */
3624 addr
= tp
->loc
->address
;
3626 /* Restore our seek position. */
3627 cur_offset
= saved_offset
;
3628 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3632 /* Given a type of search and some parameters, scan the collection of
3633 traceframes in the file looking for a match. When found, return
3634 both the traceframe and tracepoint number, otherwise -1 for
3638 tfile_trace_find (enum trace_find_type type
, int num
,
3639 ULONGEST addr1
, ULONGEST addr2
, int *tpp
)
3642 int tfnum
= 0, found
= 0, gotten
;
3644 struct breakpoint
*tp
;
3645 off_t offset
, tframe_offset
;
3648 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
3649 offset
= trace_frames_offset
;
3652 tframe_offset
= offset
;
3653 gotten
= read (trace_fd
, &tpnum
, 2);
3655 perror_with_name (trace_filename
);
3656 else if (gotten
< 2)
3657 error (_("Premature end of file while reading trace file"));
3661 gotten
= read (trace_fd
, &data_size
, 4);
3663 perror_with_name (trace_filename
);
3664 else if (gotten
< 4)
3665 error (_("Premature end of file while reading trace file"));
3674 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3675 if (tfaddr
== addr1
)
3679 tp
= get_tracepoint (num
);
3680 if (tp
&& tpnum
== tp
->number_on_target
)
3684 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3685 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
3689 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3690 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
3694 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
3700 cur_offset
= offset
;
3701 cur_data_size
= data_size
;
3704 /* Skip past the traceframe's data. */
3705 lseek (trace_fd
, data_size
, SEEK_CUR
);
3706 offset
+= data_size
;
3707 /* Update our own count of traceframes. */
3710 /* Did not find what we were looking for. */
3716 /* Look for a block of saved registers in the traceframe, and get the
3717 requested register from it. */
3720 tfile_fetch_registers (struct target_ops
*ops
,
3721 struct regcache
*regcache
, int regno
)
3723 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3725 int i
, pos
, offset
, regn
, regsize
, gotten
, pc_regno
;
3726 unsigned short mlen
;
3729 /* An uninitialized reg size says we're not going to be
3730 successful at getting register blocks. */
3731 if (!trace_regblock_size
)
3734 regs
= alloca (trace_regblock_size
);
3736 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3738 while (pos
< cur_data_size
)
3740 gotten
= read (trace_fd
, &block_type
, 1);
3742 perror_with_name (trace_filename
);
3743 else if (gotten
< 1)
3744 error (_("Premature end of file while reading trace file"));
3750 gotten
= read (trace_fd
, regs
, trace_regblock_size
);
3752 perror_with_name (trace_filename
);
3753 else if (gotten
< trace_regblock_size
)
3754 error (_("Premature end of file while reading trace file"));
3756 /* Assume the block is laid out in GDB register number order,
3757 each register with the size that it has in GDB. */
3759 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3761 regsize
= register_size (gdbarch
, regn
);
3762 /* Make sure we stay within block bounds. */
3763 if (offset
+ regsize
>= trace_regblock_size
)
3765 if (!regcache_valid_p (regcache
, regn
))
3769 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
3772 else if (regno
== -1)
3774 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
3781 lseek (trace_fd
, 8, SEEK_CUR
);
3782 gotten
= read (trace_fd
, &mlen
, 2);
3784 perror_with_name (trace_filename
);
3785 else if (gotten
< 2)
3786 error (_("Premature end of file while reading trace file"));
3787 lseek (trace_fd
, mlen
, SEEK_CUR
);
3788 pos
+= (8 + 2 + mlen
);
3791 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3795 error ("Unknown block type '%c' (0x%x) in trace frame",
3796 block_type
, block_type
);
3801 /* We get here if no register data has been found. Although we
3802 don't like making up numbers, GDB has all manner of troubles when
3803 the target says some register is not available. Filling in with
3804 zeroes is a reasonable fallback. */
3805 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3806 regcache_raw_supply (regcache
, regn
, NULL
);
3808 /* We can often usefully guess that the PC is going to be the same
3809 as the address of the tracepoint. */
3810 pc_regno
= gdbarch_pc_regnum (gdbarch
);
3811 if (pc_regno
>= 0 && (regno
== -1 || regno
== pc_regno
))
3813 struct breakpoint
*tp
= get_tracepoint (tracepoint_number
);
3817 /* But don't try to guess if tracepoint is multi-location... */
3820 warning ("Tracepoint %d has multiple locations, cannot infer $pc",
3824 /* ... or does while-stepping. */
3825 if (tp
->step_count
> 0)
3827 warning ("Tracepoint %d does while-stepping, cannot infer $pc",
3832 store_unsigned_integer (regs
, register_size (gdbarch
, pc_regno
),
3833 gdbarch_byte_order (gdbarch
),
3835 regcache_raw_supply (regcache
, pc_regno
, regs
);
3841 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
3842 const char *annex
, gdb_byte
*readbuf
,
3843 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
3847 ULONGEST maddr
, amt
;
3848 unsigned short mlen
;
3850 /* We're only doing regular memory for now. */
3851 if (object
!= TARGET_OBJECT_MEMORY
)
3854 if (readbuf
== NULL
)
3855 error ("tfile_xfer_partial: trace file is read-only");
3857 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3859 while (pos
< cur_data_size
)
3861 gotten
= read (trace_fd
, &block_type
, 1);
3863 perror_with_name (trace_filename
);
3864 else if (gotten
< 1)
3865 error (_("Premature end of file while reading trace file"));
3870 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3871 pos
+= trace_regblock_size
;
3874 gotten
= read (trace_fd
, &maddr
, 8);
3876 perror_with_name (trace_filename
);
3877 else if (gotten
< 8)
3878 error (_("Premature end of file while reading trace file"));
3880 gotten
= read (trace_fd
, &mlen
, 2);
3882 perror_with_name (trace_filename
);
3883 else if (gotten
< 2)
3884 error (_("Premature end of file while reading trace file"));
3885 /* If the block includes the first part of the desired
3886 range, return as much it has; GDB will re-request the
3887 remainder, which might be in a different block of this
3889 if (maddr
<= offset
&& offset
< (maddr
+ mlen
))
3891 amt
= (maddr
+ mlen
) - offset
;
3895 gotten
= read (trace_fd
, readbuf
, amt
);
3897 perror_with_name (trace_filename
);
3898 /* While it's acceptable to return less than was
3899 originally asked for, it's not acceptable to return
3900 less than what this block claims to contain. */
3901 else if (gotten
< amt
)
3902 error (_("Premature end of file while reading trace file"));
3905 lseek (trace_fd
, mlen
, SEEK_CUR
);
3906 pos
+= (8 + 2 + mlen
);
3909 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3913 error ("Unknown block type '%c' (0x%x) in traceframe",
3914 block_type
, block_type
);
3919 /* It's unduly pedantic to refuse to look at the executable for
3920 read-only pieces; so do the equivalent of readonly regions aka
3922 /* FIXME account for relocation at some point */
3929 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
3931 if ((s
->flags
& SEC_LOAD
) == 0 ||
3932 (s
->flags
& SEC_READONLY
) == 0)
3936 size
= bfd_get_section_size (s
);
3937 if (lma
<= offset
&& offset
< (lma
+ size
))
3939 amt
= (lma
+ size
) - offset
;
3943 amt
= bfd_get_section_contents (exec_bfd
, s
,
3944 readbuf
, offset
- lma
, amt
);
3950 /* Indicate failure to find the requested memory block. */
3954 /* Iterate through the blocks of a trace frame, looking for a 'V'
3955 block with a matching tsv number. */
3958 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
3961 int pos
, vnum
, gotten
;
3962 unsigned short mlen
;
3964 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3966 while (pos
< cur_data_size
)
3968 gotten
= read (trace_fd
, &block_type
, 1);
3970 perror_with_name (trace_filename
);
3971 else if (gotten
< 1)
3972 error (_("Premature end of file while reading trace file"));
3977 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3978 pos
+= trace_regblock_size
;
3981 lseek (trace_fd
, 8, SEEK_CUR
);
3982 gotten
= read (trace_fd
, &mlen
, 2);
3984 perror_with_name (trace_filename
);
3985 else if (gotten
< 2)
3986 error (_("Premature end of file while reading trace file"));
3987 lseek (trace_fd
, mlen
, SEEK_CUR
);
3988 pos
+= (8 + 2 + mlen
);
3991 gotten
= read (trace_fd
, &vnum
, 4);
3993 perror_with_name (trace_filename
);
3994 else if (gotten
< 4)
3995 error (_("Premature end of file while reading trace file"));
3998 gotten
= read (trace_fd
, val
, 8);
4000 perror_with_name (trace_filename
);
4001 else if (gotten
< 8)
4002 error (_("Premature end of file while reading trace file"));
4005 lseek (trace_fd
, 8, SEEK_CUR
);
4009 error ("Unknown block type '%c' (0x%x) in traceframe",
4010 block_type
, block_type
);
4014 /* Didn't find anything. */
4019 tfile_has_all_memory (struct target_ops
*ops
)
4025 tfile_has_memory (struct target_ops
*ops
)
4031 tfile_has_stack (struct target_ops
*ops
)
4037 tfile_has_registers (struct target_ops
*ops
)
4043 init_tfile_ops (void)
4045 tfile_ops
.to_shortname
= "tfile";
4046 tfile_ops
.to_longname
= "Local trace dump file";
4048 "Use a trace file as a target. Specify the filename of the trace file.";
4049 tfile_ops
.to_open
= tfile_open
;
4050 tfile_ops
.to_close
= tfile_close
;
4051 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
4052 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
4053 tfile_ops
.to_files_info
= tfile_files_info
;
4054 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
4055 tfile_ops
.to_trace_find
= tfile_trace_find
;
4056 tfile_ops
.to_get_trace_state_variable_value
= tfile_get_trace_state_variable_value
;
4057 /* core_stratum might seem more logical, but GDB doesn't like having
4058 more than one core_stratum vector. */
4059 tfile_ops
.to_stratum
= process_stratum
;
4060 tfile_ops
.to_has_all_memory
= tfile_has_all_memory
;
4061 tfile_ops
.to_has_memory
= tfile_has_memory
;
4062 tfile_ops
.to_has_stack
= tfile_has_stack
;
4063 tfile_ops
.to_has_registers
= tfile_has_registers
;
4064 tfile_ops
.to_magic
= OPS_MAGIC
;
4067 /* module initialization */
4069 _initialize_tracepoint (void)
4071 struct cmd_list_element
*c
;
4073 traceframe_number
= -1;
4074 tracepoint_number
= -1;
4076 if (tracepoint_list
.list
== NULL
)
4078 tracepoint_list
.listsize
= 128;
4079 tracepoint_list
.list
= xmalloc
4080 (tracepoint_list
.listsize
* sizeof (struct memrange
));
4082 if (tracepoint_list
.aexpr_list
== NULL
)
4084 tracepoint_list
.aexpr_listsize
= 128;
4085 tracepoint_list
.aexpr_list
= xmalloc
4086 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
4089 if (stepping_list
.list
== NULL
)
4091 stepping_list
.listsize
= 128;
4092 stepping_list
.list
= xmalloc
4093 (stepping_list
.listsize
* sizeof (struct memrange
));
4096 if (stepping_list
.aexpr_list
== NULL
)
4098 stepping_list
.aexpr_listsize
= 128;
4099 stepping_list
.aexpr_list
= xmalloc
4100 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
4103 add_info ("scope", scope_info
,
4104 _("List the variables local to a scope"));
4106 add_cmd ("tracepoints", class_trace
, NULL
,
4107 _("Tracing of program execution without stopping the program."),
4110 add_com ("tdump", class_trace
, trace_dump_command
,
4111 _("Print everything collected at the current tracepoint."));
4113 add_com ("tsave", class_trace
, trace_save_command
, _("\
4114 Save the trace data to a file.\n\
4115 Use the '-r' option to direct the target to save directly to the file,\n\
4116 using its own filesystem."));
4118 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
4119 Define a trace state variable.\n\
4120 Argument is a $-prefixed name, optionally followed\n\
4121 by '=' and an expression that sets the initial value\n\
4122 at the start of tracing."));
4123 set_cmd_completer (c
, expression_completer
);
4125 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
4126 Delete one or more trace state variables.\n\
4127 Arguments are the names of the variables to delete.\n\
4128 If no arguments are supplied, delete all variables."), &deletelist
);
4129 /* FIXME add a trace variable completer */
4131 add_info ("tvariables", tvariables_info
, _("\
4132 Status of trace state variables and their values.\n\
4135 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
4136 Select a trace frame;\n\
4137 No argument means forward by one frame; '-' means backward by one frame."),
4138 &tfindlist
, "tfind ", 1, &cmdlist
);
4140 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
4141 Select a trace frame whose PC is outside the given range (exclusive).\n\
4142 Usage: tfind outside addr1, addr2"),
4145 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
4146 Select a trace frame whose PC is in the given range (inclusive).\n\
4147 Usage: tfind range addr1,addr2"),
4150 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
4151 Select a trace frame by source line.\n\
4152 Argument can be a line number (with optional source file), \n\
4153 a function name, or '*' followed by an address.\n\
4154 Default argument is 'the next source line that was traced'."),
4157 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
4158 Select a trace frame by tracepoint number.\n\
4159 Default is the tracepoint for the current trace frame."),
4162 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
4163 Select a trace frame by PC.\n\
4164 Default is the current PC, or the PC of the current trace frame."),
4167 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
4168 Synonym for 'none'.\n\
4169 De-select any trace frame and resume 'live' debugging."),
4172 add_cmd ("none", class_trace
, trace_find_none_command
,
4173 _("De-select any trace frame and resume 'live' debugging."),
4176 add_cmd ("start", class_trace
, trace_find_start_command
,
4177 _("Select the first trace frame in the trace buffer."),
4180 add_com ("tstatus", class_trace
, trace_status_command
,
4181 _("Display the status of the current trace data collection."));
4183 add_com ("tstop", class_trace
, trace_stop_command
,
4184 _("Stop trace data collection."));
4186 add_com ("tstart", class_trace
, trace_start_command
,
4187 _("Start trace data collection."));
4189 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
4190 Ends a list of commands or actions.\n\
4191 Several GDB commands allow you to enter a list of commands or actions.\n\
4192 Entering \"end\" on a line by itself is the normal way to terminate\n\
4194 Note: the \"end\" command cannot be used at the gdb prompt."));
4196 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
4197 Specify single-stepping behavior at a tracepoint.\n\
4198 Argument is number of instructions to trace in single-step mode\n\
4199 following the tracepoint. This command is normally followed by\n\
4200 one or more \"collect\" commands, to specify what to collect\n\
4201 while single-stepping.\n\n\
4202 Note: this command can only be used in a tracepoint \"actions\" list."));
4204 add_com_alias ("ws", "while-stepping", class_alias
, 0);
4205 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
4207 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
4208 Specify one or more data items to be collected at a tracepoint.\n\
4209 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
4210 collect all data (variables, registers) referenced by that expression.\n\
4211 Also accepts the following special arguments:\n\
4212 $regs -- all registers.\n\
4213 $args -- all function arguments.\n\
4214 $locals -- all variables local to the block/function scope.\n\
4215 Note: this command can only be used in a tracepoint \"actions\" list."));
4217 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
4218 Specify one or more expressions to be evaluated at a tracepoint.\n\
4219 Accepts a comma-separated list of (one or more) expressions.\n\
4220 The result of each evaluation will be discarded.\n\
4221 Note: this command can only be used in a tracepoint \"actions\" list."));
4223 add_com ("actions", class_trace
, trace_actions_command
, _("\
4224 Specify the actions to be taken at a tracepoint.\n\
4225 Tracepoint actions may include collecting of specified data, \n\
4226 single-stepping, or enabling/disabling other tracepoints, \n\
4227 depending on target's capabilities."));
4229 default_collect
= xstrdup ("");
4230 add_setshow_string_cmd ("default-collect", class_trace
,
4231 &default_collect
, _("\
4232 Set the list of expressions to collect by default"), _("\
4233 Show the list of expressions to collect by default"), NULL
,
4235 &setlist
, &showlist
);
4237 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
4238 &disconnected_tracing
, _("\
4239 Set whether tracing continues after GDB disconnects."), _("\
4240 Show whether tracing continues after GDB disconnects."), _("\
4241 Use this to continue a tracing run even if GDB disconnects\n\
4242 or detaches from the target. You can reconnect later and look at\n\
4243 trace data collected in the meantime."),
4244 set_disconnected_tracing
,
4249 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
4250 &circular_trace_buffer
, _("\
4251 Set target's use of circular trace buffer."), _("\
4252 Show target's use of circular trace buffer."), _("\
4253 Use this to make the trace buffer into a circular buffer,\n\
4254 which will discard traceframes (oldest first) instead of filling\n\
4255 up and stopping the trace run."),
4256 set_circular_trace_buffer
,
4263 add_target (&tfile_ops
);