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, 2011 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"
54 #include "exceptions.h"
55 #include "cli/cli-utils.h"
57 /* readline include files */
58 #include "readline/readline.h"
59 #include "readline/history.h"
61 /* readline defines this. */
72 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
73 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
75 /* Maximum length of an agent aexpression.
76 This accounts for the fact that packets are limited to 400 bytes
77 (which includes everything -- including the checksum), and assumes
78 the worst case of maximum length for each of the pieces of a
81 NOTE: expressions get mem2hex'ed otherwise this would be twice as
82 large. (400 - 31)/2 == 184 */
83 #define MAX_AGENT_EXPR_LEN 184
87 /* A hook used to notify the UI of tracepoint operations. */
89 void (*deprecated_trace_find_hook
) (char *arg
, int from_tty
);
90 void (*deprecated_trace_start_stop_hook
) (int start
, int from_tty
);
92 extern void (*deprecated_readline_begin_hook
) (char *, ...);
93 extern char *(*deprecated_readline_hook
) (char *);
94 extern void (*deprecated_readline_end_hook
) (void);
96 /* GDB commands implemented in other modules:
99 extern void output_command (char *, int);
104 This module defines the following debugger commands:
105 trace : set a tracepoint on a function, line, or address.
106 info trace : list all debugger-defined tracepoints.
107 delete trace : delete one or more tracepoints.
108 enable trace : enable one or more tracepoints.
109 disable trace : disable one or more tracepoints.
110 actions : specify actions to be taken at a tracepoint.
111 passcount : specify a pass count for a tracepoint.
112 tstart : start a trace experiment.
113 tstop : stop a trace experiment.
114 tstatus : query the status of a trace experiment.
115 tfind : find a trace frame in the trace buffer.
116 tdump : print everything collected at the current tracepoint.
117 save-tracepoints : write tracepoint setup into a file.
119 This module defines the following user-visible debugger variables:
120 $trace_frame : sequence number of trace frame currently being debugged.
121 $trace_line : source line of trace frame currently being debugged.
122 $trace_file : source file of trace frame currently being debugged.
123 $tracepoint : tracepoint number of trace frame currently being debugged.
127 /* ======= Important global variables: ======= */
129 /* The list of all trace state variables. We don't retain pointers to
130 any of these for any reason - API is by name or number only - so it
131 works to have a vector of objects. */
133 typedef struct trace_state_variable tsv_s
;
136 /* An object describing the contents of a traceframe. */
138 struct traceframe_info
140 /* Collected memory. */
141 VEC(mem_range_s
) *memory
;
144 static VEC(tsv_s
) *tvariables
;
146 /* The next integer to assign to a variable. */
148 static int next_tsv_number
= 1;
150 /* Number of last traceframe collected. */
151 static int traceframe_number
;
153 /* Tracepoint for last traceframe collected. */
154 static int tracepoint_number
;
156 /* Symbol for function for last traceframe collected. */
157 static struct symbol
*traceframe_fun
;
159 /* Symtab and line for last traceframe collected. */
160 static struct symtab_and_line traceframe_sal
;
162 /* The traceframe info of the current traceframe. NULL if we haven't
163 yet attempted to fetch it, or if the target does not support
164 fetching this object, or if we're not inspecting a traceframe
166 static struct traceframe_info
*traceframe_info
;
168 /* Tracing command lists. */
169 static struct cmd_list_element
*tfindlist
;
171 /* List of expressions to collect by default at each tracepoint hit. */
172 char *default_collect
= "";
174 static int disconnected_tracing
;
176 /* This variable controls whether we ask the target for a linear or
177 circular trace buffer. */
179 static int circular_trace_buffer
;
181 /* Textual notes applying to the current and/or future trace runs. */
183 char *trace_user
= NULL
;
185 /* Textual notes applying to the current and/or future trace runs. */
187 char *trace_notes
= NULL
;
189 /* Textual notes applying to the stopping of a trace. */
191 char *trace_stop_notes
= NULL
;
193 /* ======= Important command functions: ======= */
194 static void trace_actions_command (char *, int);
195 static void trace_start_command (char *, int);
196 static void trace_stop_command (char *, int);
197 static void trace_status_command (char *, int);
198 static void trace_find_command (char *, int);
199 static void trace_find_pc_command (char *, int);
200 static void trace_find_tracepoint_command (char *, int);
201 static void trace_find_line_command (char *, int);
202 static void trace_find_range_command (char *, int);
203 static void trace_find_outside_command (char *, int);
204 static void trace_dump_command (char *, int);
206 /* support routines */
208 struct collection_list
;
209 static void add_aexpr (struct collection_list
*, struct agent_expr
*);
210 static char *mem2hex (gdb_byte
*, char *, int);
211 static void add_register (struct collection_list
*collection
,
214 static void free_uploaded_tps (struct uploaded_tp
**utpp
);
215 static void free_uploaded_tsvs (struct uploaded_tsv
**utsvp
);
218 extern void _initialize_tracepoint (void);
220 static struct trace_status trace_status
;
222 char *stop_reason_names
[] = {
232 struct trace_status
*
233 current_trace_status (void)
235 return &trace_status
;
241 free_traceframe_info (struct traceframe_info
*info
)
245 VEC_free (mem_range_s
, info
->memory
);
251 /* Free and clear the traceframe info cache of the current
255 clear_traceframe_info (void)
257 free_traceframe_info (traceframe_info
);
258 traceframe_info
= NULL
;
261 /* Set traceframe number to NUM. */
263 set_traceframe_num (int num
)
265 traceframe_number
= num
;
266 set_internalvar_integer (lookup_internalvar ("trace_frame"), num
);
269 /* Set tracepoint number to NUM. */
271 set_tracepoint_num (int num
)
273 tracepoint_number
= num
;
274 set_internalvar_integer (lookup_internalvar ("tracepoint"), num
);
277 /* Set externally visible debug variables for querying/printing
278 the traceframe context (line, function, file). */
281 set_traceframe_context (struct frame_info
*trace_frame
)
285 /* Save as globals for internal use. */
286 if (trace_frame
!= NULL
287 && get_frame_pc_if_available (trace_frame
, &trace_pc
))
289 traceframe_sal
= find_pc_line (trace_pc
, 0);
290 traceframe_fun
= find_pc_function (trace_pc
);
292 /* Save linenumber as "$trace_line", a debugger variable visible to
294 set_internalvar_integer (lookup_internalvar ("trace_line"),
295 traceframe_sal
.line
);
299 init_sal (&traceframe_sal
);
300 traceframe_fun
= NULL
;
301 set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
304 /* Save func name as "$trace_func", a debugger variable visible to
306 if (traceframe_fun
== NULL
307 || SYMBOL_LINKAGE_NAME (traceframe_fun
) == NULL
)
308 clear_internalvar (lookup_internalvar ("trace_func"));
310 set_internalvar_string (lookup_internalvar ("trace_func"),
311 SYMBOL_LINKAGE_NAME (traceframe_fun
));
313 /* Save file name as "$trace_file", a debugger variable visible to
315 if (traceframe_sal
.symtab
== NULL
316 || traceframe_sal
.symtab
->filename
== NULL
)
317 clear_internalvar (lookup_internalvar ("trace_file"));
319 set_internalvar_string (lookup_internalvar ("trace_file"),
320 traceframe_sal
.symtab
->filename
);
323 /* Create a new trace state variable with the given name. */
325 struct trace_state_variable
*
326 create_trace_state_variable (const char *name
)
328 struct trace_state_variable tsv
;
330 memset (&tsv
, 0, sizeof (tsv
));
331 tsv
.name
= xstrdup (name
);
332 tsv
.number
= next_tsv_number
++;
333 return VEC_safe_push (tsv_s
, tvariables
, &tsv
);
336 /* Look for a trace state variable of the given name. */
338 struct trace_state_variable
*
339 find_trace_state_variable (const char *name
)
341 struct trace_state_variable
*tsv
;
344 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
345 if (strcmp (name
, tsv
->name
) == 0)
352 delete_trace_state_variable (const char *name
)
354 struct trace_state_variable
*tsv
;
357 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
358 if (strcmp (name
, tsv
->name
) == 0)
360 xfree ((void *)tsv
->name
);
361 VEC_unordered_remove (tsv_s
, tvariables
, ix
);
365 warning (_("No trace variable named \"$%s\", not deleting"), name
);
368 /* The 'tvariable' command collects a name and optional expression to
369 evaluate into an initial value. */
372 trace_variable_command (char *args
, int from_tty
)
374 struct expression
*expr
;
375 struct cleanup
*old_chain
;
376 struct internalvar
*intvar
= NULL
;
378 struct trace_state_variable
*tsv
;
381 error_no_arg (_("trace state variable name"));
383 /* All the possible valid arguments are expressions. */
384 expr
= parse_expression (args
);
385 old_chain
= make_cleanup (free_current_contents
, &expr
);
387 if (expr
->nelts
== 0)
388 error (_("No expression?"));
390 /* Only allow two syntaxes; "$name" and "$name=value". */
391 if (expr
->elts
[0].opcode
== OP_INTERNALVAR
)
393 intvar
= expr
->elts
[1].internalvar
;
395 else if (expr
->elts
[0].opcode
== BINOP_ASSIGN
396 && expr
->elts
[1].opcode
== OP_INTERNALVAR
)
398 intvar
= expr
->elts
[2].internalvar
;
399 initval
= value_as_long (evaluate_subexpression_type (expr
, 4));
402 error (_("Syntax must be $NAME [ = EXPR ]"));
405 error (_("No name given"));
407 if (strlen (internalvar_name (intvar
)) <= 0)
408 error (_("Must supply a non-empty variable name"));
410 /* If the variable already exists, just change its initial value. */
411 tsv
= find_trace_state_variable (internalvar_name (intvar
));
414 tsv
->initial_value
= initval
;
415 printf_filtered (_("Trace state variable $%s "
416 "now has initial value %s.\n"),
417 tsv
->name
, plongest (tsv
->initial_value
));
418 do_cleanups (old_chain
);
422 /* Create a new variable. */
423 tsv
= create_trace_state_variable (internalvar_name (intvar
));
424 tsv
->initial_value
= initval
;
426 printf_filtered (_("Trace state variable $%s "
427 "created, with initial value %s.\n"),
428 tsv
->name
, plongest (tsv
->initial_value
));
430 do_cleanups (old_chain
);
434 delete_trace_variable_command (char *args
, int from_tty
)
438 struct cleanup
*back_to
;
442 if (query (_("Delete all trace state variables? ")))
443 VEC_free (tsv_s
, tvariables
);
448 argv
= gdb_buildargv (args
);
449 back_to
= make_cleanup_freeargv (argv
);
451 for (ix
= 0; argv
[ix
] != NULL
; ix
++)
453 if (*argv
[ix
] == '$')
454 delete_trace_state_variable (argv
[ix
] + 1);
456 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv
[ix
]);
459 do_cleanups (back_to
);
465 tvariables_info_1 (void)
467 struct trace_state_variable
*tsv
;
470 struct cleanup
*back_to
;
471 struct ui_out
*uiout
= current_uiout
;
473 if (VEC_length (tsv_s
, tvariables
) == 0 && !ui_out_is_mi_like_p (uiout
))
475 printf_filtered (_("No trace state variables.\n"));
479 /* Try to acquire values from the target. */
480 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
, ++count
)
481 tsv
->value_known
= target_get_trace_state_variable_value (tsv
->number
,
484 back_to
= make_cleanup_ui_out_table_begin_end (uiout
, 3,
485 count
, "trace-variables");
486 ui_out_table_header (uiout
, 15, ui_left
, "name", "Name");
487 ui_out_table_header (uiout
, 11, ui_left
, "initial", "Initial");
488 ui_out_table_header (uiout
, 11, ui_left
, "current", "Current");
490 ui_out_table_body (uiout
);
492 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
494 struct cleanup
*back_to2
;
498 back_to2
= make_cleanup_ui_out_tuple_begin_end (uiout
, "variable");
500 name
= concat ("$", tsv
->name
, (char *) NULL
);
501 make_cleanup (xfree
, name
);
502 ui_out_field_string (uiout
, "name", name
);
503 ui_out_field_string (uiout
, "initial", plongest (tsv
->initial_value
));
505 if (tsv
->value_known
)
506 c
= plongest (tsv
->value
);
507 else if (ui_out_is_mi_like_p (uiout
))
508 /* For MI, we prefer not to use magic string constants, but rather
509 omit the field completely. The difference between unknown and
510 undefined does not seem important enough to represent. */
512 else if (current_trace_status ()->running
|| traceframe_number
>= 0)
513 /* The value is/was defined, but we don't have it. */
516 /* It is not meaningful to ask about the value. */
519 ui_out_field_string (uiout
, "current", c
);
520 ui_out_text (uiout
, "\n");
522 do_cleanups (back_to2
);
525 do_cleanups (back_to
);
528 /* List all the trace state variables. */
531 tvariables_info (char *args
, int from_tty
)
533 tvariables_info_1 ();
536 /* Stash definitions of tsvs into the given file. */
539 save_trace_state_variables (struct ui_file
*fp
)
541 struct trace_state_variable
*tsv
;
544 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
546 fprintf_unfiltered (fp
, "tvariable $%s", tsv
->name
);
547 if (tsv
->initial_value
)
548 fprintf_unfiltered (fp
, " = %s", plongest (tsv
->initial_value
));
549 fprintf_unfiltered (fp
, "\n");
553 /* ACTIONS functions: */
555 /* The three functions:
556 collect_pseudocommand,
557 while_stepping_pseudocommand, and
558 end_actions_pseudocommand
559 are placeholders for "commands" that are actually ONLY to be used
560 within a tracepoint action list. If the actual function is ever called,
561 it means that somebody issued the "command" at the top level,
562 which is always an error. */
565 end_actions_pseudocommand (char *args
, int from_tty
)
567 error (_("This command cannot be used at the top level."));
571 while_stepping_pseudocommand (char *args
, int from_tty
)
573 error (_("This command can only be used in a tracepoint actions list."));
577 collect_pseudocommand (char *args
, int from_tty
)
579 error (_("This command can only be used in a tracepoint actions list."));
583 teval_pseudocommand (char *args
, int from_tty
)
585 error (_("This command can only be used in a tracepoint actions list."));
588 /* Parse any collection options, such as /s for strings. */
591 decode_agent_options (char *exp
)
593 struct value_print_options opts
;
598 /* Call this to borrow the print elements default for collection
600 get_user_print_options (&opts
);
605 if (target_supports_string_tracing ())
607 /* Allow an optional decimal number giving an explicit maximum
608 string length, defaulting it to the "print elements" value;
609 so "collect/s80 mystr" gets at most 80 bytes of string. */
610 trace_string_kludge
= opts
.print_max
;
612 if (*exp
>= '0' && *exp
<= '9')
613 trace_string_kludge
= atoi (exp
);
614 while (*exp
>= '0' && *exp
<= '9')
618 error (_("Target does not support \"/s\" option for string tracing."));
621 error (_("Undefined collection format \"%c\"."), *exp
);
623 exp
= skip_spaces (exp
);
628 /* Enter a list of actions for a tracepoint. */
630 trace_actions_command (char *args
, int from_tty
)
632 struct tracepoint
*t
;
633 struct command_line
*l
;
635 t
= get_tracepoint_by_number (&args
, NULL
, 1);
639 xstrprintf ("Enter actions for tracepoint %d, one per line.",
641 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
643 l
= read_command_lines (tmpbuf
, from_tty
, 1,
644 check_tracepoint_command
, t
);
645 do_cleanups (cleanups
);
646 breakpoint_set_commands (&t
->base
, l
);
648 /* else just return */
651 /* Report the results of checking the agent expression, as errors or
655 report_agent_reqs_errors (struct agent_expr
*aexpr
)
657 /* All of the "flaws" are serious bytecode generation issues that
658 should never occur. */
659 if (aexpr
->flaw
!= agent_flaw_none
)
660 internal_error (__FILE__
, __LINE__
, _("expression is malformed"));
662 /* If analysis shows a stack underflow, GDB must have done something
663 badly wrong in its bytecode generation. */
664 if (aexpr
->min_height
< 0)
665 internal_error (__FILE__
, __LINE__
,
666 _("expression has min height < 0"));
668 /* Issue this error if the stack is predicted to get too deep. The
669 limit is rather arbitrary; a better scheme might be for the
670 target to report how much stack it will have available. The
671 depth roughly corresponds to parenthesization, so a limit of 20
672 amounts to 20 levels of expression nesting, which is actually
673 a pretty big hairy expression. */
674 if (aexpr
->max_height
> 20)
675 error (_("Expression is too complicated."));
678 /* worker function */
680 validate_actionline (char **line
, struct breakpoint
*b
)
682 struct cmd_list_element
*c
;
683 struct expression
*exp
= NULL
;
684 struct cleanup
*old_chain
= NULL
;
686 struct bp_location
*loc
;
687 struct agent_expr
*aexpr
;
688 struct tracepoint
*t
= (struct tracepoint
*) b
;
690 /* If EOF is typed, *line is NULL. */
694 for (p
= *line
; isspace ((int) *p
);)
697 /* Symbol lookup etc. */
698 if (*p
== '\0') /* empty line: just prompt for another line. */
701 if (*p
== '#') /* comment line */
704 c
= lookup_cmd (&p
, cmdlist
, "", -1, 1);
706 error (_("`%s' is not a tracepoint action, or is ambiguous."), p
);
708 if (cmd_cfunc_eq (c
, collect_pseudocommand
))
710 trace_string_kludge
= 0;
712 p
= decode_agent_options (p
);
715 { /* Repeat over a comma-separated list. */
716 QUIT
; /* Allow user to bail out with ^C. */
717 while (isspace ((int) *p
))
720 if (*p
== '$') /* Look for special pseudo-symbols. */
722 if (0 == strncasecmp ("reg", p
+ 1, 3)
723 || 0 == strncasecmp ("arg", p
+ 1, 3)
724 || 0 == strncasecmp ("loc", p
+ 1, 3)
725 || 0 == strncasecmp ("_ret", p
+ 1, 4)
726 || 0 == strncasecmp ("_sdata", p
+ 1, 6))
731 /* else fall thru, treat p as an expression and parse it! */
734 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
737 exp
= parse_exp_1 (&p
, block_for_pc (loc
->address
), 1);
738 old_chain
= make_cleanup (free_current_contents
, &exp
);
740 if (exp
->elts
[0].opcode
== OP_VAR_VALUE
)
742 if (SYMBOL_CLASS (exp
->elts
[2].symbol
) == LOC_CONST
)
744 error (_("constant `%s' (value %ld) "
745 "will not be collected."),
746 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
),
747 SYMBOL_VALUE (exp
->elts
[2].symbol
));
749 else if (SYMBOL_CLASS (exp
->elts
[2].symbol
)
750 == LOC_OPTIMIZED_OUT
)
752 error (_("`%s' is optimized away "
753 "and cannot be collected."),
754 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
));
758 /* We have something to collect, make sure that the expr to
759 bytecode translator can handle it and that it's not too
761 aexpr
= gen_trace_for_expr (loc
->address
, exp
);
762 make_cleanup_free_agent_expr (aexpr
);
764 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
765 error (_("Expression is too complicated."));
769 report_agent_reqs_errors (aexpr
);
771 do_cleanups (old_chain
);
774 while (p
&& *p
++ == ',');
777 else if (cmd_cfunc_eq (c
, teval_pseudocommand
))
780 { /* Repeat over a comma-separated list. */
781 QUIT
; /* Allow user to bail out with ^C. */
782 while (isspace ((int) *p
))
786 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
789 /* Only expressions are allowed for this action. */
790 exp
= parse_exp_1 (&p
, block_for_pc (loc
->address
), 1);
791 old_chain
= make_cleanup (free_current_contents
, &exp
);
793 /* We have something to evaluate, make sure that the expr to
794 bytecode translator can handle it and that it's not too
796 aexpr
= gen_eval_for_expr (loc
->address
, exp
);
797 make_cleanup_free_agent_expr (aexpr
);
799 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
800 error (_("Expression is too complicated."));
803 report_agent_reqs_errors (aexpr
);
805 do_cleanups (old_chain
);
808 while (p
&& *p
++ == ',');
811 else if (cmd_cfunc_eq (c
, while_stepping_pseudocommand
))
813 char *steparg
; /* In case warning is necessary. */
815 while (isspace ((int) *p
))
819 if (*p
== '\0' || (t
->step_count
= strtol (p
, &p
, 0)) == 0)
820 error (_("while-stepping step count `%s' is malformed."), *line
);
823 else if (cmd_cfunc_eq (c
, end_actions_pseudocommand
))
827 error (_("`%s' is not a supported tracepoint action."), *line
);
831 memrange_absolute
= -1
836 int type
; /* memrange_absolute for absolute memory range,
837 else basereg number. */
838 bfd_signed_vma start
;
842 struct collection_list
844 unsigned char regs_mask
[32]; /* room for up to 256 regs */
847 struct memrange
*list
;
848 long aexpr_listsize
; /* size of array pointed to by expr_list elt */
850 struct agent_expr
**aexpr_list
;
852 /* True is the user requested a collection of "$_sdata", "static
856 tracepoint_list
, stepping_list
;
858 /* MEMRANGE functions: */
860 static int memrange_cmp (const void *, const void *);
862 /* Compare memranges for qsort. */
864 memrange_cmp (const void *va
, const void *vb
)
866 const struct memrange
*a
= va
, *b
= vb
;
868 if (a
->type
< b
->type
)
870 if (a
->type
> b
->type
)
872 if (a
->type
== memrange_absolute
)
874 if ((bfd_vma
) a
->start
< (bfd_vma
) b
->start
)
876 if ((bfd_vma
) a
->start
> (bfd_vma
) b
->start
)
881 if (a
->start
< b
->start
)
883 if (a
->start
> b
->start
)
889 /* Sort the memrange list using qsort, and merge adjacent memranges. */
891 memrange_sortmerge (struct collection_list
*memranges
)
895 qsort (memranges
->list
, memranges
->next_memrange
,
896 sizeof (struct memrange
), memrange_cmp
);
897 if (memranges
->next_memrange
> 0)
899 for (a
= 0, b
= 1; b
< memranges
->next_memrange
; b
++)
901 /* If memrange b overlaps or is adjacent to memrange a,
903 if (memranges
->list
[a
].type
== memranges
->list
[b
].type
904 && memranges
->list
[b
].start
<= memranges
->list
[a
].end
)
906 if (memranges
->list
[b
].end
> memranges
->list
[a
].end
)
907 memranges
->list
[a
].end
= memranges
->list
[b
].end
;
908 continue; /* next b, same a */
912 memcpy (&memranges
->list
[a
], &memranges
->list
[b
],
913 sizeof (struct memrange
));
915 memranges
->next_memrange
= a
+ 1;
919 /* Add a register to a collection list. */
921 add_register (struct collection_list
*collection
, unsigned int regno
)
924 printf_filtered ("collect register %d\n", regno
);
925 if (regno
>= (8 * sizeof (collection
->regs_mask
)))
926 error (_("Internal: register number %d too large for tracepoint"),
928 collection
->regs_mask
[regno
/ 8] |= 1 << (regno
% 8);
931 /* Add a memrange to a collection list. */
933 add_memrange (struct collection_list
*memranges
,
934 int type
, bfd_signed_vma base
,
939 printf_filtered ("(%d,", type
);
941 printf_filtered (",%ld)\n", len
);
944 /* type: memrange_absolute == memory, other n == basereg */
945 memranges
->list
[memranges
->next_memrange
].type
= type
;
946 /* base: addr if memory, offset if reg relative. */
947 memranges
->list
[memranges
->next_memrange
].start
= base
;
948 /* len: we actually save end (base + len) for convenience */
949 memranges
->list
[memranges
->next_memrange
].end
= base
+ len
;
950 memranges
->next_memrange
++;
951 if (memranges
->next_memrange
>= memranges
->listsize
)
953 memranges
->listsize
*= 2;
954 memranges
->list
= xrealloc (memranges
->list
,
955 memranges
->listsize
);
958 if (type
!= memrange_absolute
) /* Better collect the base register! */
959 add_register (memranges
, type
);
962 /* Add a symbol to a collection list. */
964 collect_symbol (struct collection_list
*collect
,
966 struct gdbarch
*gdbarch
,
967 long frame_regno
, long frame_offset
,
972 bfd_signed_vma offset
;
973 int treat_as_expr
= 0;
975 len
= TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
)));
976 switch (SYMBOL_CLASS (sym
))
979 printf_filtered ("%s: don't know symbol class %d\n",
980 SYMBOL_PRINT_NAME (sym
),
984 printf_filtered ("constant %s (value %ld) will not be collected.\n",
985 SYMBOL_PRINT_NAME (sym
), SYMBOL_VALUE (sym
));
988 offset
= SYMBOL_VALUE_ADDRESS (sym
);
993 sprintf_vma (tmp
, offset
);
994 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
995 SYMBOL_PRINT_NAME (sym
), len
,
998 /* A struct may be a C++ class with static fields, go to general
999 expression handling. */
1000 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
1003 add_memrange (collect
, memrange_absolute
, offset
, len
);
1006 reg
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
1008 printf_filtered ("LOC_REG[parm] %s: ",
1009 SYMBOL_PRINT_NAME (sym
));
1010 add_register (collect
, reg
);
1011 /* Check for doubles stored in two registers. */
1012 /* FIXME: how about larger types stored in 3 or more regs? */
1013 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FLT
&&
1014 len
> register_size (gdbarch
, reg
))
1015 add_register (collect
, reg
+ 1);
1018 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
1019 printf_filtered (" (will not collect %s)\n",
1020 SYMBOL_PRINT_NAME (sym
));
1024 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
1027 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1028 SYMBOL_PRINT_NAME (sym
), len
);
1029 printf_vma (offset
);
1030 printf_filtered (" from frame ptr reg %d\n", reg
);
1032 add_memrange (collect
, reg
, offset
, len
);
1034 case LOC_REGPARM_ADDR
:
1035 reg
= SYMBOL_VALUE (sym
);
1039 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
1040 SYMBOL_PRINT_NAME (sym
), len
);
1041 printf_vma (offset
);
1042 printf_filtered (" from reg %d\n", reg
);
1044 add_memrange (collect
, reg
, offset
, len
);
1048 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
1051 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1052 SYMBOL_PRINT_NAME (sym
), len
);
1053 printf_vma (offset
);
1054 printf_filtered (" from frame ptr reg %d\n", reg
);
1056 add_memrange (collect
, reg
, offset
, len
);
1059 case LOC_UNRESOLVED
:
1063 case LOC_OPTIMIZED_OUT
:
1064 printf_filtered ("%s has been optimized out of existence.\n",
1065 SYMBOL_PRINT_NAME (sym
));
1073 /* Expressions are the most general case. */
1076 struct agent_expr
*aexpr
;
1077 struct cleanup
*old_chain1
= NULL
;
1079 aexpr
= gen_trace_for_var (scope
, gdbarch
, sym
);
1081 /* It can happen that the symbol is recorded as a computed
1082 location, but it's been optimized away and doesn't actually
1083 have a location expression. */
1086 printf_filtered ("%s has been optimized out of existence.\n",
1087 SYMBOL_PRINT_NAME (sym
));
1091 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1095 report_agent_reqs_errors (aexpr
);
1097 discard_cleanups (old_chain1
);
1098 add_aexpr (collect
, aexpr
);
1100 /* Take care of the registers. */
1101 if (aexpr
->reg_mask_len
> 0)
1105 for (ndx1
= 0; ndx1
< aexpr
->reg_mask_len
; ndx1
++)
1107 QUIT
; /* Allow user to bail out with ^C. */
1108 if (aexpr
->reg_mask
[ndx1
] != 0)
1110 /* Assume chars have 8 bits. */
1111 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1112 if (aexpr
->reg_mask
[ndx1
] & (1 << ndx2
))
1113 /* It's used -- record it. */
1114 add_register (collect
, ndx1
* 8 + ndx2
);
1121 /* Data to be passed around in the calls to the locals and args
1124 struct add_local_symbols_data
1126 struct collection_list
*collect
;
1127 struct gdbarch
*gdbarch
;
1134 /* The callback for the locals and args iterators. */
1137 do_collect_symbol (const char *print_name
,
1141 struct add_local_symbols_data
*p
= cb_data
;
1143 collect_symbol (p
->collect
, sym
, p
->gdbarch
, p
->frame_regno
,
1144 p
->frame_offset
, p
->pc
);
1148 /* Add all locals (or args) symbols to collection list. */
1150 add_local_symbols (struct collection_list
*collect
,
1151 struct gdbarch
*gdbarch
, CORE_ADDR pc
,
1152 long frame_regno
, long frame_offset
, int type
)
1154 struct block
*block
;
1155 struct add_local_symbols_data cb_data
;
1157 cb_data
.collect
= collect
;
1158 cb_data
.gdbarch
= gdbarch
;
1160 cb_data
.frame_regno
= frame_regno
;
1161 cb_data
.frame_offset
= frame_offset
;
1166 block
= block_for_pc (pc
);
1169 warning (_("Can't collect locals; "
1170 "no symbol table info available.\n"));
1174 iterate_over_block_local_vars (block
, do_collect_symbol
, &cb_data
);
1175 if (cb_data
.count
== 0)
1176 warning (_("No locals found in scope."));
1180 pc
= get_pc_function_start (pc
);
1181 block
= block_for_pc (pc
);
1184 warning (_("Can't collect args; no symbol table info available."));
1188 iterate_over_block_arg_vars (block
, do_collect_symbol
, &cb_data
);
1189 if (cb_data
.count
== 0)
1190 warning (_("No args found in scope."));
1195 add_static_trace_data (struct collection_list
*collection
)
1198 printf_filtered ("collect static trace data\n");
1199 collection
->strace_data
= 1;
1202 /* worker function */
1204 clear_collection_list (struct collection_list
*list
)
1208 list
->next_memrange
= 0;
1209 for (ndx
= 0; ndx
< list
->next_aexpr_elt
; ndx
++)
1211 free_agent_expr (list
->aexpr_list
[ndx
]);
1212 list
->aexpr_list
[ndx
] = NULL
;
1214 list
->next_aexpr_elt
= 0;
1215 memset (list
->regs_mask
, 0, sizeof (list
->regs_mask
));
1216 list
->strace_data
= 0;
1219 /* Reduce a collection list to string form (for gdb protocol). */
1221 stringify_collection_list (struct collection_list
*list
, char *string
)
1223 char temp_buf
[2048];
1227 char *(*str_list
)[];
1231 count
= 1 + 1 + list
->next_memrange
+ list
->next_aexpr_elt
+ 1;
1232 str_list
= (char *(*)[]) xmalloc (count
* sizeof (char *));
1234 if (list
->strace_data
)
1237 printf_filtered ("\nCollecting static trace data\n");
1240 (*str_list
)[ndx
] = savestring (temp_buf
, end
- temp_buf
);
1244 for (i
= sizeof (list
->regs_mask
) - 1; i
> 0; i
--)
1245 if (list
->regs_mask
[i
] != 0) /* Skip leading zeroes in regs_mask. */
1247 if (list
->regs_mask
[i
] != 0) /* Prepare to send regs_mask to the stub. */
1250 printf_filtered ("\nCollecting registers (mask): 0x");
1255 QUIT
; /* Allow user to bail out with ^C. */
1257 printf_filtered ("%02X", list
->regs_mask
[i
]);
1258 sprintf (end
, "%02X", list
->regs_mask
[i
]);
1261 (*str_list
)[ndx
] = xstrdup (temp_buf
);
1265 printf_filtered ("\n");
1266 if (list
->next_memrange
> 0 && info_verbose
)
1267 printf_filtered ("Collecting memranges: \n");
1268 for (i
= 0, count
= 0, end
= temp_buf
; i
< list
->next_memrange
; i
++)
1270 QUIT
; /* Allow user to bail out with ^C. */
1271 sprintf_vma (tmp2
, list
->list
[i
].start
);
1274 printf_filtered ("(%d, %s, %ld)\n",
1277 (long) (list
->list
[i
].end
- list
->list
[i
].start
));
1279 if (count
+ 27 > MAX_AGENT_EXPR_LEN
)
1281 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1288 bfd_signed_vma length
= list
->list
[i
].end
- list
->list
[i
].start
;
1290 /* The "%X" conversion specifier expects an unsigned argument,
1291 so passing -1 (memrange_absolute) to it directly gives you
1292 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1294 if (list
->list
[i
].type
== memrange_absolute
)
1295 sprintf (end
, "M-1,%s,%lX", tmp2
, (long) length
);
1297 sprintf (end
, "M%X,%s,%lX", list
->list
[i
].type
, tmp2
, (long) length
);
1300 count
+= strlen (end
);
1301 end
= temp_buf
+ count
;
1304 for (i
= 0; i
< list
->next_aexpr_elt
; i
++)
1306 QUIT
; /* Allow user to bail out with ^C. */
1307 if ((count
+ 10 + 2 * list
->aexpr_list
[i
]->len
) > MAX_AGENT_EXPR_LEN
)
1309 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1314 sprintf (end
, "X%08X,", list
->aexpr_list
[i
]->len
);
1315 end
+= 10; /* 'X' + 8 hex digits + ',' */
1318 end
= mem2hex (list
->aexpr_list
[i
]->buf
,
1319 end
, list
->aexpr_list
[i
]->len
);
1320 count
+= 2 * list
->aexpr_list
[i
]->len
;
1325 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1330 (*str_list
)[ndx
] = NULL
;
1343 encode_actions_1 (struct command_line
*action
,
1344 struct breakpoint
*t
,
1345 struct bp_location
*tloc
,
1347 LONGEST frame_offset
,
1348 struct collection_list
*collect
,
1349 struct collection_list
*stepping_list
)
1352 struct expression
*exp
= NULL
;
1354 struct value
*tempval
;
1355 struct cmd_list_element
*cmd
;
1356 struct agent_expr
*aexpr
;
1358 for (; action
; action
= action
->next
)
1360 QUIT
; /* Allow user to bail out with ^C. */
1361 action_exp
= action
->line
;
1362 while (isspace ((int) *action_exp
))
1365 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
1367 error (_("Bad action list item: %s"), action_exp
);
1369 if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
1371 trace_string_kludge
= 0;
1372 if (*action_exp
== '/')
1373 action_exp
= decode_agent_options (action_exp
);
1376 { /* Repeat over a comma-separated list. */
1377 QUIT
; /* Allow user to bail out with ^C. */
1378 while (isspace ((int) *action_exp
))
1381 if (0 == strncasecmp ("$reg", action_exp
, 4))
1383 for (i
= 0; i
< gdbarch_num_regs (tloc
->gdbarch
); i
++)
1384 add_register (collect
, i
);
1385 action_exp
= strchr (action_exp
, ','); /* more? */
1387 else if (0 == strncasecmp ("$arg", action_exp
, 4))
1389 add_local_symbols (collect
,
1395 action_exp
= strchr (action_exp
, ','); /* more? */
1397 else if (0 == strncasecmp ("$loc", action_exp
, 4))
1399 add_local_symbols (collect
,
1405 action_exp
= strchr (action_exp
, ','); /* more? */
1407 else if (0 == strncasecmp ("$_ret", action_exp
, 5))
1409 struct cleanup
*old_chain1
= NULL
;
1411 aexpr
= gen_trace_for_return_address (tloc
->address
,
1414 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1417 report_agent_reqs_errors (aexpr
);
1419 discard_cleanups (old_chain1
);
1420 add_aexpr (collect
, aexpr
);
1422 /* take care of the registers */
1423 if (aexpr
->reg_mask_len
> 0)
1427 for (ndx1
= 0; ndx1
< aexpr
->reg_mask_len
; ndx1
++)
1429 QUIT
; /* allow user to bail out with ^C */
1430 if (aexpr
->reg_mask
[ndx1
] != 0)
1432 /* assume chars have 8 bits */
1433 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1434 if (aexpr
->reg_mask
[ndx1
] & (1 << ndx2
))
1435 /* it's used -- record it */
1436 add_register (collect
,
1442 action_exp
= strchr (action_exp
, ','); /* more? */
1444 else if (0 == strncasecmp ("$_sdata", action_exp
, 7))
1446 add_static_trace_data (collect
);
1447 action_exp
= strchr (action_exp
, ','); /* more? */
1451 unsigned long addr
, len
;
1452 struct cleanup
*old_chain
= NULL
;
1453 struct cleanup
*old_chain1
= NULL
;
1455 exp
= parse_exp_1 (&action_exp
,
1456 block_for_pc (tloc
->address
), 1);
1457 old_chain
= make_cleanup (free_current_contents
, &exp
);
1459 switch (exp
->elts
[0].opcode
)
1463 const char *name
= &exp
->elts
[2].string
;
1465 i
= user_reg_map_name_to_regnum (tloc
->gdbarch
,
1466 name
, strlen (name
));
1468 internal_error (__FILE__
, __LINE__
,
1469 _("Register $%s not available"),
1472 printf_filtered ("OP_REGISTER: ");
1473 add_register (collect
, i
);
1478 /* Safe because we know it's a simple expression. */
1479 tempval
= evaluate_expression (exp
);
1480 addr
= value_address (tempval
);
1481 len
= TYPE_LENGTH (check_typedef (exp
->elts
[1].type
));
1482 add_memrange (collect
, memrange_absolute
, addr
, len
);
1486 collect_symbol (collect
,
1487 exp
->elts
[2].symbol
,
1494 default: /* Full-fledged expression. */
1495 aexpr
= gen_trace_for_expr (tloc
->address
, exp
);
1497 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1501 report_agent_reqs_errors (aexpr
);
1503 discard_cleanups (old_chain1
);
1504 add_aexpr (collect
, aexpr
);
1506 /* Take care of the registers. */
1507 if (aexpr
->reg_mask_len
> 0)
1512 for (ndx1
= 0; ndx1
< aexpr
->reg_mask_len
; ndx1
++)
1514 QUIT
; /* Allow user to bail out with ^C. */
1515 if (aexpr
->reg_mask
[ndx1
] != 0)
1517 /* Assume chars have 8 bits. */
1518 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1519 if (aexpr
->reg_mask
[ndx1
] & (1 << ndx2
))
1520 /* It's used -- record it. */
1521 add_register (collect
,
1528 do_cleanups (old_chain
);
1531 while (action_exp
&& *action_exp
++ == ',');
1533 else if (cmd_cfunc_eq (cmd
, teval_pseudocommand
))
1536 { /* Repeat over a comma-separated list. */
1537 QUIT
; /* Allow user to bail out with ^C. */
1538 while (isspace ((int) *action_exp
))
1542 struct cleanup
*old_chain
= NULL
;
1543 struct cleanup
*old_chain1
= NULL
;
1545 exp
= parse_exp_1 (&action_exp
,
1546 block_for_pc (tloc
->address
), 1);
1547 old_chain
= make_cleanup (free_current_contents
, &exp
);
1549 aexpr
= gen_eval_for_expr (tloc
->address
, exp
);
1550 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1553 report_agent_reqs_errors (aexpr
);
1555 discard_cleanups (old_chain1
);
1556 /* Even though we're not officially collecting, add
1557 to the collect list anyway. */
1558 add_aexpr (collect
, aexpr
);
1560 do_cleanups (old_chain
);
1563 while (action_exp
&& *action_exp
++ == ',');
1565 else if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
1567 /* We check against nested while-stepping when setting
1568 breakpoint action, so no way to run into nested
1570 gdb_assert (stepping_list
);
1572 encode_actions_1 (action
->body_list
[0], t
, tloc
, frame_reg
,
1573 frame_offset
, stepping_list
, NULL
);
1576 error (_("Invalid tracepoint command '%s'"), action
->line
);
1580 /* Render all actions into gdb protocol. */
1582 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
1583 char ***tdp_actions
, char ***stepping_actions
)
1585 static char tdp_buff
[2048], step_buff
[2048];
1586 char *default_collect_line
= NULL
;
1587 struct command_line
*actions
;
1588 struct command_line
*default_collect_action
= NULL
;
1590 LONGEST frame_offset
;
1591 struct cleanup
*back_to
;
1593 back_to
= make_cleanup (null_cleanup
, NULL
);
1595 clear_collection_list (&tracepoint_list
);
1596 clear_collection_list (&stepping_list
);
1598 *tdp_actions
= NULL
;
1599 *stepping_actions
= NULL
;
1601 gdbarch_virtual_frame_pointer (tloc
->gdbarch
,
1602 tloc
->address
, &frame_reg
, &frame_offset
);
1604 actions
= breakpoint_commands (t
);
1606 /* If there are default expressions to collect, make up a collect
1607 action and prepend to the action list to encode. Note that since
1608 validation is per-tracepoint (local var "xyz" might be valid for
1609 one tracepoint and not another, etc), we make up the action on
1610 the fly, and don't cache it. */
1611 if (*default_collect
)
1615 default_collect_line
= xstrprintf ("collect %s", default_collect
);
1616 make_cleanup (xfree
, default_collect_line
);
1618 line
= default_collect_line
;
1619 validate_actionline (&line
, t
);
1621 default_collect_action
= xmalloc (sizeof (struct command_line
));
1622 make_cleanup (xfree
, default_collect_action
);
1623 default_collect_action
->next
= actions
;
1624 default_collect_action
->line
= line
;
1625 actions
= default_collect_action
;
1627 encode_actions_1 (actions
, t
, tloc
, frame_reg
, frame_offset
,
1628 &tracepoint_list
, &stepping_list
);
1630 memrange_sortmerge (&tracepoint_list
);
1631 memrange_sortmerge (&stepping_list
);
1633 *tdp_actions
= stringify_collection_list (&tracepoint_list
,
1635 *stepping_actions
= stringify_collection_list (&stepping_list
,
1638 do_cleanups (back_to
);
1642 add_aexpr (struct collection_list
*collect
, struct agent_expr
*aexpr
)
1644 if (collect
->next_aexpr_elt
>= collect
->aexpr_listsize
)
1646 collect
->aexpr_list
=
1647 xrealloc (collect
->aexpr_list
,
1648 2 * collect
->aexpr_listsize
* sizeof (struct agent_expr
*));
1649 collect
->aexpr_listsize
*= 2;
1651 collect
->aexpr_list
[collect
->next_aexpr_elt
] = aexpr
;
1652 collect
->next_aexpr_elt
++;
1656 process_tracepoint_on_disconnect (void)
1658 VEC(breakpoint_p
) *tp_vec
= NULL
;
1660 struct breakpoint
*b
;
1661 int has_pending_p
= 0;
1663 /* Check whether we still have pending tracepoint. If we have, warn the
1664 user that pending tracepoint will no longer work. */
1665 tp_vec
= all_tracepoints ();
1666 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
1675 struct bp_location
*loc1
;
1677 for (loc1
= b
->loc
; loc1
; loc1
= loc1
->next
)
1679 if (loc1
->shlib_disabled
)
1690 VEC_free (breakpoint_p
, tp_vec
);
1693 warning (_("Pending tracepoints will not be resolved while"
1694 " GDB is disconnected\n"));
1699 start_tracing (char *notes
)
1701 VEC(breakpoint_p
) *tp_vec
= NULL
;
1703 struct breakpoint
*b
;
1704 struct trace_state_variable
*tsv
;
1705 int any_enabled
= 0, num_to_download
= 0;
1708 tp_vec
= all_tracepoints ();
1710 /* No point in tracing without any tracepoints... */
1711 if (VEC_length (breakpoint_p
, tp_vec
) == 0)
1713 VEC_free (breakpoint_p
, tp_vec
);
1714 error (_("No tracepoints defined, not starting trace"));
1717 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
1719 struct tracepoint
*t
= (struct tracepoint
*) b
;
1721 if (b
->enable_state
== bp_enabled
)
1724 if ((b
->type
== bp_fast_tracepoint
1725 ? may_insert_fast_tracepoints
1726 : may_insert_tracepoints
))
1729 warning (_("May not insert %stracepoints, skipping tracepoint %d"),
1730 (b
->type
== bp_fast_tracepoint
? "fast " : ""), b
->number
);
1735 if (target_supports_enable_disable_tracepoint ())
1736 warning (_("No tracepoints enabled"));
1739 /* No point in tracing with only disabled tracepoints that
1740 cannot be re-enabled. */
1741 VEC_free (breakpoint_p
, tp_vec
);
1742 error (_("No tracepoints enabled, not starting trace"));
1746 if (num_to_download
<= 0)
1748 VEC_free (breakpoint_p
, tp_vec
);
1749 error (_("No tracepoints that may be downloaded, not starting trace"));
1752 target_trace_init ();
1754 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
1756 struct tracepoint
*t
= (struct tracepoint
*) b
;
1757 struct bp_location
*loc
;
1759 /* Clear `inserted' flag. */
1760 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
1763 if ((b
->type
== bp_fast_tracepoint
1764 ? !may_insert_fast_tracepoints
1765 : !may_insert_tracepoints
))
1768 t
->number_on_target
= 0;
1770 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
1772 /* Since tracepoint locations are never duplicated, `inserted'
1773 flag should be zero. */
1774 gdb_assert (!loc
->inserted
);
1776 target_download_tracepoint (loc
);
1781 t
->number_on_target
= b
->number
;
1783 VEC_free (breakpoint_p
, tp_vec
);
1785 /* Send down all the trace state variables too. */
1786 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
1788 target_download_trace_state_variable (tsv
);
1791 /* Tell target to treat text-like sections as transparent. */
1792 target_trace_set_readonly_regions ();
1793 /* Set some mode flags. */
1794 target_set_disconnected_tracing (disconnected_tracing
);
1795 target_set_circular_trace_buffer (circular_trace_buffer
);
1798 notes
= trace_notes
;
1799 ret
= target_set_trace_notes (trace_user
, notes
, NULL
);
1801 if (!ret
&& (trace_user
|| notes
))
1802 warning ("Target does not support trace user/notes, info ignored");
1804 /* Now insert traps and begin collecting data. */
1805 target_trace_start ();
1807 /* Reset our local state. */
1808 set_traceframe_num (-1);
1809 set_tracepoint_num (-1);
1810 set_traceframe_context (NULL
);
1811 current_trace_status()->running
= 1;
1812 clear_traceframe_info ();
1815 /* The tstart command requests the target to start a new trace run.
1816 The command passes any arguments it has to the target verbatim, as
1817 an optional "trace note". This is useful as for instance a warning
1818 to other users if the trace runs disconnected, and you don't want
1819 anybody else messing with the target. */
1822 trace_start_command (char *args
, int from_tty
)
1824 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1826 if (current_trace_status ()->running
)
1829 && !query (_("A trace is running already. Start a new run? ")))
1830 error (_("New trace run not started."));
1833 start_tracing (args
);
1836 /* The tstop command stops the tracing run. The command passes any
1837 supplied arguments to the target verbatim as a "stop note"; if the
1838 target supports trace notes, then it will be reported back as part
1839 of the trace run's status. */
1842 trace_stop_command (char *args
, int from_tty
)
1844 if (!current_trace_status ()->running
)
1845 error (_("Trace is not running."));
1847 stop_tracing (args
);
1851 stop_tracing (char *note
)
1855 target_trace_stop ();
1858 note
= trace_stop_notes
;
1859 ret
= target_set_trace_notes (NULL
, NULL
, note
);
1862 warning ("Target does not support trace notes, note ignored");
1864 /* Should change in response to reply? */
1865 current_trace_status ()->running
= 0;
1868 /* tstatus command */
1870 trace_status_command (char *args
, int from_tty
)
1872 struct trace_status
*ts
= current_trace_status ();
1874 VEC(breakpoint_p
) *tp_vec
= NULL
;
1875 struct breakpoint
*t
;
1877 status
= target_get_trace_status (ts
);
1882 printf_filtered (_("Using a trace file.\n"));
1885 printf_filtered (_("Trace can not be run on this target.\n"));
1890 if (!ts
->running_known
)
1892 printf_filtered (_("Run/stop status is unknown.\n"));
1894 else if (ts
->running
)
1896 printf_filtered (_("Trace is running on the target.\n"));
1900 switch (ts
->stop_reason
)
1902 case trace_never_run
:
1903 printf_filtered (_("No trace has been run on the target.\n"));
1907 printf_filtered (_("Trace stopped by a tstop command (%s).\n"),
1910 printf_filtered (_("Trace stopped by a tstop command.\n"));
1912 case trace_buffer_full
:
1913 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1915 case trace_disconnected
:
1916 printf_filtered (_("Trace stopped because of disconnection.\n"));
1918 case tracepoint_passcount
:
1919 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1920 ts
->stopping_tracepoint
);
1922 case tracepoint_error
:
1923 if (ts
->stopping_tracepoint
)
1924 printf_filtered (_("Trace stopped by an "
1925 "error (%s, tracepoint %d).\n"),
1926 ts
->stop_desc
, ts
->stopping_tracepoint
);
1928 printf_filtered (_("Trace stopped by an error (%s).\n"),
1931 case trace_stop_reason_unknown
:
1932 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1935 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1941 if (ts
->traceframes_created
>= 0
1942 && ts
->traceframe_count
!= ts
->traceframes_created
)
1944 printf_filtered (_("Buffer contains %d trace "
1945 "frames (of %d created total).\n"),
1946 ts
->traceframe_count
, ts
->traceframes_created
);
1948 else if (ts
->traceframe_count
>= 0)
1950 printf_filtered (_("Collected %d trace frames.\n"),
1951 ts
->traceframe_count
);
1954 if (ts
->buffer_free
>= 0)
1956 if (ts
->buffer_size
>= 0)
1958 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1959 ts
->buffer_free
, ts
->buffer_size
);
1960 if (ts
->buffer_size
> 0)
1961 printf_filtered (_(" (%d%% full)"),
1962 ((int) ((((long long) (ts
->buffer_size
1963 - ts
->buffer_free
)) * 100)
1964 / ts
->buffer_size
)));
1965 printf_filtered (_(".\n"));
1968 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1972 if (ts
->disconnected_tracing
)
1973 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1975 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1977 if (ts
->circular_buffer
)
1978 printf_filtered (_("Trace buffer is circular.\n"));
1980 if (ts
->user_name
&& strlen (ts
->user_name
) > 0)
1981 printf_filtered (_("Trace user is %s.\n"), ts
->user_name
);
1983 if (ts
->notes
&& strlen (ts
->notes
) > 0)
1984 printf_filtered (_("Trace notes: %s.\n"), ts
->notes
);
1986 /* Now report on what we're doing with tfind. */
1987 if (traceframe_number
>= 0)
1988 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1989 traceframe_number
, tracepoint_number
);
1991 printf_filtered (_("Not looking at any trace frame.\n"));
1993 /* Report start/stop times if supplied. */
1998 LONGEST run_time
= ts
->stop_time
- ts
->start_time
;
2000 /* Reporting a run time is more readable than two long numbers. */
2001 printf_filtered (_("Trace started at %ld.%06ld secs, stopped %ld.%06ld secs later.\n"),
2002 (long int) ts
->start_time
/ 1000000,
2003 (long int) ts
->start_time
% 1000000,
2004 (long int) run_time
/ 1000000,
2005 (long int) run_time
% 1000000);
2008 printf_filtered (_("Trace started at %ld.%06ld secs.\n"),
2009 (long int) ts
->start_time
/ 1000000,
2010 (long int) ts
->start_time
% 1000000);
2012 else if (ts
->stop_time
)
2013 printf_filtered (_("Trace stopped at %ld.%06ld secs.\n"),
2014 (long int) ts
->stop_time
/ 1000000,
2015 (long int) ts
->stop_time
% 1000000);
2017 /* Now report any per-tracepoint status available. */
2018 tp_vec
= all_tracepoints ();
2020 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2021 target_get_tracepoint_status (t
, NULL
);
2023 VEC_free (breakpoint_p
, tp_vec
);
2026 /* Report the trace status to uiout, in a way suitable for MI, and not
2027 suitable for CLI. If ON_STOP is true, suppress a few fields that
2028 are not meaningful in the -trace-stop response.
2030 The implementation is essentially parallel to trace_status_command, but
2031 merging them will result in unreadable code. */
2033 trace_status_mi (int on_stop
)
2035 struct ui_out
*uiout
= current_uiout
;
2036 struct trace_status
*ts
= current_trace_status ();
2039 status
= target_get_trace_status (ts
);
2041 if (status
== -1 && !ts
->from_file
)
2043 ui_out_field_string (uiout
, "supported", "0");
2048 ui_out_field_string (uiout
, "supported", "file");
2050 ui_out_field_string (uiout
, "supported", "1");
2052 gdb_assert (ts
->running_known
);
2056 ui_out_field_string (uiout
, "running", "1");
2058 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
2059 Given that the frontend gets the status either on -trace-stop, or from
2060 -trace-status after re-connection, it does not seem like this
2061 information is necessary for anything. It is not necessary for either
2062 figuring the vital state of the target nor for navigation of trace
2063 frames. If the frontend wants to show the current state is some
2064 configure dialog, it can request the value when such dialog is
2065 invoked by the user. */
2069 char *stop_reason
= NULL
;
2070 int stopping_tracepoint
= -1;
2073 ui_out_field_string (uiout
, "running", "0");
2075 if (ts
->stop_reason
!= trace_stop_reason_unknown
)
2077 switch (ts
->stop_reason
)
2080 stop_reason
= "request";
2082 case trace_buffer_full
:
2083 stop_reason
= "overflow";
2085 case trace_disconnected
:
2086 stop_reason
= "disconnection";
2088 case tracepoint_passcount
:
2089 stop_reason
= "passcount";
2090 stopping_tracepoint
= ts
->stopping_tracepoint
;
2092 case tracepoint_error
:
2093 stop_reason
= "error";
2094 stopping_tracepoint
= ts
->stopping_tracepoint
;
2100 ui_out_field_string (uiout
, "stop-reason", stop_reason
);
2101 if (stopping_tracepoint
!= -1)
2102 ui_out_field_int (uiout
, "stopping-tracepoint",
2103 stopping_tracepoint
);
2104 if (ts
->stop_reason
== tracepoint_error
)
2105 ui_out_field_string (uiout
, "error-description",
2111 if (ts
->traceframe_count
!= -1)
2112 ui_out_field_int (uiout
, "frames", ts
->traceframe_count
);
2113 if (ts
->traceframes_created
!= -1)
2114 ui_out_field_int (uiout
, "frames-created", ts
->traceframes_created
);
2115 if (ts
->buffer_size
!= -1)
2116 ui_out_field_int (uiout
, "buffer-size", ts
->buffer_size
);
2117 if (ts
->buffer_free
!= -1)
2118 ui_out_field_int (uiout
, "buffer-free", ts
->buffer_free
);
2120 ui_out_field_int (uiout
, "disconnected", ts
->disconnected_tracing
);
2121 ui_out_field_int (uiout
, "circular", ts
->circular_buffer
);
2123 ui_out_field_string (uiout
, "user-name", ts
->user_name
);
2124 ui_out_field_string (uiout
, "notes", ts
->notes
);
2129 xsnprintf (buf
, sizeof buf
, "%ld.%06ld",
2130 (long int) ts
->start_time
/ 1000000,
2131 (long int) ts
->start_time
% 1000000);
2132 ui_out_field_string (uiout
, "start-time", buf
);
2133 xsnprintf (buf
, sizeof buf
, "%ld.%06ld",
2134 (long int) ts
->stop_time
/ 1000000,
2135 (long int) ts
->stop_time
% 1000000);
2136 ui_out_field_string (uiout
, "stop-time", buf
);
2140 /* This function handles the details of what to do about an ongoing
2141 tracing run if the user has asked to detach or otherwise disconnect
2144 disconnect_tracing (int from_tty
)
2146 /* It can happen that the target that was tracing went away on its
2147 own, and we didn't notice. Get a status update, and if the
2148 current target doesn't even do tracing, then assume it's not
2150 if (target_get_trace_status (current_trace_status ()) < 0)
2151 current_trace_status ()->running
= 0;
2153 /* If running interactively, give the user the option to cancel and
2154 then decide what to do differently with the run. Scripts are
2155 just going to disconnect and let the target deal with it,
2156 according to how it's been instructed previously via
2157 disconnected-tracing. */
2158 if (current_trace_status ()->running
&& from_tty
)
2160 process_tracepoint_on_disconnect ();
2162 if (current_trace_status ()->disconnected_tracing
)
2164 if (!query (_("Trace is running and will "
2165 "continue after detach; detach anyway? ")))
2166 error (_("Not confirmed."));
2170 if (!query (_("Trace is running but will "
2171 "stop on detach; detach anyway? ")))
2172 error (_("Not confirmed."));
2176 /* Also we want to be out of tfind mode, otherwise things can get
2177 confusing upon reconnection. Just use these calls instead of
2178 full tfind_1 behavior because we're in the middle of detaching,
2179 and there's no point to updating current stack frame etc. */
2180 set_current_traceframe (-1);
2181 set_traceframe_context (NULL
);
2184 /* Worker function for the various flavors of the tfind command. */
2186 tfind_1 (enum trace_find_type type
, int num
,
2187 ULONGEST addr1
, ULONGEST addr2
,
2190 int target_frameno
= -1, target_tracept
= -1;
2191 struct frame_id old_frame_id
= null_frame_id
;
2192 struct tracepoint
*tp
;
2193 struct ui_out
*uiout
= current_uiout
;
2195 /* Only try to get the current stack frame if we have a chance of
2196 succeeding. In particular, if we're trying to get a first trace
2197 frame while all threads are running, it's not going to succeed,
2198 so leave it with a default value and let the frame comparison
2199 below (correctly) decide to print out the source location of the
2201 if (!(type
== tfind_number
&& num
== -1)
2202 && (has_stack_frames () || traceframe_number
>= 0))
2203 old_frame_id
= get_frame_id (get_current_frame ());
2205 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
2208 if (type
== tfind_number
2210 && target_frameno
== -1)
2212 /* We told the target to get out of tfind mode, and it did. */
2214 else if (target_frameno
== -1)
2216 /* A request for a non-existent trace frame has failed.
2217 Our response will be different, depending on FROM_TTY:
2219 If FROM_TTY is true, meaning that this command was
2220 typed interactively by the user, then give an error
2221 and DO NOT change the state of traceframe_number etc.
2223 However if FROM_TTY is false, meaning that we're either
2224 in a script, a loop, or a user-defined command, then
2225 DON'T give an error, but DO change the state of
2226 traceframe_number etc. to invalid.
2228 The rationalle is that if you typed the command, you
2229 might just have committed a typo or something, and you'd
2230 like to NOT lose your current debugging state. However
2231 if you're in a user-defined command or especially in a
2232 loop, then you need a way to detect that the command
2233 failed WITHOUT aborting. This allows you to write
2234 scripts that search thru the trace buffer until the end,
2235 and then continue on to do something else. */
2238 error (_("Target failed to find requested trace frame."));
2242 printf_filtered ("End of trace buffer.\n");
2243 #if 0 /* dubious now? */
2244 /* The following will not recurse, since it's
2246 trace_find_command ("-1", from_tty
);
2251 tp
= get_tracepoint_by_number_on_target (target_tracept
);
2253 reinit_frame_cache ();
2254 registers_changed ();
2255 target_dcache_invalidate ();
2256 set_traceframe_num (target_frameno
);
2257 clear_traceframe_info ();
2258 set_tracepoint_num (tp
? tp
->base
.number
: target_tracept
);
2259 if (target_frameno
== -1)
2260 set_traceframe_context (NULL
);
2262 set_traceframe_context (get_current_frame ());
2264 if (traceframe_number
>= 0)
2266 /* Use different branches for MI and CLI to make CLI messages
2268 if (ui_out_is_mi_like_p (uiout
))
2270 ui_out_field_string (uiout
, "found", "1");
2271 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
2272 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
2276 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
2277 traceframe_number
, tracepoint_number
);
2282 if (ui_out_is_mi_like_p (uiout
))
2283 ui_out_field_string (uiout
, "found", "0");
2284 else if (type
== tfind_number
&& num
== -1)
2285 printf_unfiltered (_("No longer looking at any trace frame\n"));
2286 else /* This case may never occur, check. */
2287 printf_unfiltered (_("No trace frame found\n"));
2290 /* If we're in nonstop mode and getting out of looking at trace
2291 frames, there won't be any current frame to go back to and
2294 && (has_stack_frames () || traceframe_number
>= 0))
2296 enum print_what print_what
;
2298 /* NOTE: in imitation of the step command, try to determine
2299 whether we have made a transition from one function to
2300 another. If so, we'll print the "stack frame" (ie. the new
2301 function and it's arguments) -- otherwise we'll just show the
2304 if (frame_id_eq (old_frame_id
,
2305 get_frame_id (get_current_frame ())))
2306 print_what
= SRC_LINE
;
2308 print_what
= SRC_AND_LOC
;
2310 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
2315 /* trace_find_command takes a trace frame number n,
2316 sends "QTFrame:<n>" to the target,
2317 and accepts a reply that may contain several optional pieces
2318 of information: a frame number, a tracepoint number, and an
2319 indication of whether this is a trap frame or a stepping frame.
2321 The minimal response is just "OK" (which indicates that the
2322 target does not give us a frame number or a tracepoint number).
2323 Instead of that, the target may send us a string containing
2325 F<hexnum> (gives the selected frame number)
2326 T<hexnum> (gives the selected tracepoint number)
2331 trace_find_command (char *args
, int from_tty
)
2332 { /* This should only be called with a numeric argument. */
2335 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2336 error (_("May not look at trace frames while trace is running."));
2338 if (args
== 0 || *args
== 0)
2339 { /* TFIND with no args means find NEXT trace frame. */
2340 if (traceframe_number
== -1)
2341 frameno
= 0; /* "next" is first one. */
2343 frameno
= traceframe_number
+ 1;
2345 else if (0 == strcmp (args
, "-"))
2347 if (traceframe_number
== -1)
2348 error (_("not debugging trace buffer"));
2349 else if (from_tty
&& traceframe_number
== 0)
2350 error (_("already at start of trace buffer"));
2352 frameno
= traceframe_number
- 1;
2354 /* A hack to work around eval's need for fp to have been collected. */
2355 else if (0 == strcmp (args
, "-1"))
2358 frameno
= parse_and_eval_long (args
);
2361 error (_("invalid input (%d is less than zero)"), frameno
);
2363 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
2368 trace_find_end_command (char *args
, int from_tty
)
2370 trace_find_command ("-1", from_tty
);
2375 trace_find_none_command (char *args
, int from_tty
)
2377 trace_find_command ("-1", from_tty
);
2382 trace_find_start_command (char *args
, int from_tty
)
2384 trace_find_command ("0", from_tty
);
2387 /* tfind pc command */
2389 trace_find_pc_command (char *args
, int from_tty
)
2393 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2394 error (_("May not look at trace frames while trace is running."));
2396 if (args
== 0 || *args
== 0)
2397 pc
= regcache_read_pc (get_current_regcache ());
2399 pc
= parse_and_eval_address (args
);
2401 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
2404 /* tfind tracepoint command */
2406 trace_find_tracepoint_command (char *args
, int from_tty
)
2409 struct tracepoint
*tp
;
2411 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2412 error (_("May not look at trace frames while trace is running."));
2414 if (args
== 0 || *args
== 0)
2416 if (tracepoint_number
== -1)
2417 error (_("No current tracepoint -- please supply an argument."));
2419 tdp
= tracepoint_number
; /* Default is current TDP. */
2422 tdp
= parse_and_eval_long (args
);
2424 /* If we have the tracepoint on hand, use the number that the
2425 target knows about (which may be different if we disconnected
2426 and reconnected). */
2427 tp
= get_tracepoint (tdp
);
2429 tdp
= tp
->number_on_target
;
2431 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
2434 /* TFIND LINE command:
2436 This command will take a sourceline for argument, just like BREAK
2437 or TRACE (ie. anything that "decode_line_1" can handle).
2439 With no argument, this command will find the next trace frame
2440 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2443 trace_find_line_command (char *args
, int from_tty
)
2445 static CORE_ADDR start_pc
, end_pc
;
2446 struct symtabs_and_lines sals
;
2447 struct symtab_and_line sal
;
2448 struct cleanup
*old_chain
;
2450 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2451 error (_("May not look at trace frames while trace is running."));
2453 if (args
== 0 || *args
== 0)
2455 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2457 sals
.sals
= (struct symtab_and_line
*)
2458 xmalloc (sizeof (struct symtab_and_line
));
2463 sals
= decode_line_spec (args
, DECODE_LINE_FUNFIRSTLINE
);
2467 old_chain
= make_cleanup (xfree
, sals
.sals
);
2468 if (sal
.symtab
== 0)
2469 error (_("No line number information available."));
2471 if (sal
.line
> 0 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2473 if (start_pc
== end_pc
)
2475 printf_filtered ("Line %d of \"%s\"",
2476 sal
.line
, sal
.symtab
->filename
);
2478 printf_filtered (" is at address ");
2479 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2481 printf_filtered (" but contains no code.\n");
2482 sal
= find_pc_line (start_pc
, 0);
2484 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2485 && start_pc
!= end_pc
)
2486 printf_filtered ("Attempting to find line %d instead.\n",
2489 error (_("Cannot find a good line."));
2493 /* Is there any case in which we get here, and have an address
2494 which the user would want to see? If we have debugging
2495 symbols and no line numbers? */
2496 error (_("Line number %d is out of range for \"%s\"."),
2497 sal
.line
, sal
.symtab
->filename
);
2499 /* Find within range of stated line. */
2501 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2503 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2504 do_cleanups (old_chain
);
2507 /* tfind range command */
2509 trace_find_range_command (char *args
, int from_tty
)
2511 static CORE_ADDR start
, stop
;
2514 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2515 error (_("May not look at trace frames while trace is running."));
2517 if (args
== 0 || *args
== 0)
2518 { /* XXX FIXME: what should default behavior be? */
2519 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2523 if (0 != (tmp
= strchr (args
, ',')))
2525 *tmp
++ = '\0'; /* Terminate start address. */
2526 while (isspace ((int) *tmp
))
2528 start
= parse_and_eval_address (args
);
2529 stop
= parse_and_eval_address (tmp
);
2532 { /* No explicit end address? */
2533 start
= parse_and_eval_address (args
);
2534 stop
= start
+ 1; /* ??? */
2537 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2540 /* tfind outside command */
2542 trace_find_outside_command (char *args
, int from_tty
)
2544 CORE_ADDR start
, stop
;
2547 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2548 error (_("May not look at trace frames while trace is running."));
2550 if (args
== 0 || *args
== 0)
2551 { /* XXX FIXME: what should default behavior be? */
2552 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2556 if (0 != (tmp
= strchr (args
, ',')))
2558 *tmp
++ = '\0'; /* Terminate start address. */
2559 while (isspace ((int) *tmp
))
2561 start
= parse_and_eval_address (args
);
2562 stop
= parse_and_eval_address (tmp
);
2565 { /* No explicit end address? */
2566 start
= parse_and_eval_address (args
);
2567 stop
= start
+ 1; /* ??? */
2570 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2573 /* info scope command: list the locals for a scope. */
2575 scope_info (char *args
, int from_tty
)
2577 struct symtabs_and_lines sals
;
2579 struct minimal_symbol
*msym
;
2580 struct block
*block
;
2581 char *symname
, *save_args
= args
;
2582 struct dict_iterator iter
;
2584 struct gdbarch
*gdbarch
;
2587 if (args
== 0 || *args
== 0)
2588 error (_("requires an argument (function, "
2589 "line or *addr) to define a scope"));
2591 sals
= decode_line_1 (&args
, DECODE_LINE_FUNFIRSTLINE
, NULL
, 0);
2592 if (sals
.nelts
== 0)
2593 return; /* Presumably decode_line_1 has already warned. */
2595 /* Resolve line numbers to PC. */
2596 resolve_sal_pc (&sals
.sals
[0]);
2597 block
= block_for_pc (sals
.sals
[0].pc
);
2601 QUIT
; /* Allow user to bail out with ^C. */
2602 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2604 QUIT
; /* Allow user to bail out with ^C. */
2606 printf_filtered ("Scope for %s:\n", save_args
);
2609 symname
= SYMBOL_PRINT_NAME (sym
);
2610 if (symname
== NULL
|| *symname
== '\0')
2611 continue; /* Probably botched, certainly useless. */
2613 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2615 printf_filtered ("Symbol %s is ", symname
);
2616 switch (SYMBOL_CLASS (sym
))
2619 case LOC_UNDEF
: /* Messed up symbol? */
2620 printf_filtered ("a bogus symbol, class %d.\n",
2621 SYMBOL_CLASS (sym
));
2622 count
--; /* Don't count this one. */
2625 printf_filtered ("a constant with value %ld (0x%lx)",
2626 SYMBOL_VALUE (sym
), SYMBOL_VALUE (sym
));
2628 case LOC_CONST_BYTES
:
2629 printf_filtered ("constant bytes: ");
2630 if (SYMBOL_TYPE (sym
))
2631 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2632 fprintf_filtered (gdb_stdout
, " %02x",
2633 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2636 printf_filtered ("in static storage at address ");
2637 printf_filtered ("%s", paddress (gdbarch
,
2638 SYMBOL_VALUE_ADDRESS (sym
)));
2641 /* GDBARCH is the architecture associated with the objfile
2642 the symbol is defined in; the target architecture may be
2643 different, and may provide additional registers. However,
2644 we do not know the target architecture at this point.
2645 We assume the objfile architecture will contain all the
2646 standard registers that occur in debug info in that
2648 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
,
2651 if (SYMBOL_IS_ARGUMENT (sym
))
2652 printf_filtered ("an argument in register $%s",
2653 gdbarch_register_name (gdbarch
, regno
));
2655 printf_filtered ("a local variable in register $%s",
2656 gdbarch_register_name (gdbarch
, regno
));
2659 printf_filtered ("an argument at stack/frame offset %ld",
2660 SYMBOL_VALUE (sym
));
2663 printf_filtered ("a local variable at frame offset %ld",
2664 SYMBOL_VALUE (sym
));
2667 printf_filtered ("a reference argument at offset %ld",
2668 SYMBOL_VALUE (sym
));
2670 case LOC_REGPARM_ADDR
:
2671 /* Note comment at LOC_REGISTER. */
2672 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
,
2674 printf_filtered ("the address of an argument, in register $%s",
2675 gdbarch_register_name (gdbarch
, regno
));
2678 printf_filtered ("a typedef.\n");
2681 printf_filtered ("a label at address ");
2682 printf_filtered ("%s", paddress (gdbarch
,
2683 SYMBOL_VALUE_ADDRESS (sym
)));
2686 printf_filtered ("a function at address ");
2687 printf_filtered ("%s",
2688 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2690 case LOC_UNRESOLVED
:
2691 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2694 printf_filtered ("Unresolved Static");
2697 printf_filtered ("static storage at address ");
2698 printf_filtered ("%s",
2699 paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (msym
)));
2702 case LOC_OPTIMIZED_OUT
:
2703 printf_filtered ("optimized out.\n");
2706 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
,
2707 BLOCK_START (block
),
2711 if (SYMBOL_TYPE (sym
))
2712 printf_filtered (", length %d.\n",
2713 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2715 if (BLOCK_FUNCTION (block
))
2718 block
= BLOCK_SUPERBLOCK (block
);
2721 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2725 /* worker function (cleanup) */
2727 replace_comma (void *data
)
2734 /* Helper for trace_dump_command. Dump the action list starting at
2735 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2736 actions of the body of a while-stepping action. STEPPING_FRAME is
2737 set if the current traceframe was determined to be a while-stepping
2741 trace_dump_actions (struct command_line
*action
,
2742 int stepping_actions
, int stepping_frame
,
2745 char *action_exp
, *next_comma
;
2747 for (; action
!= NULL
; action
= action
->next
)
2749 struct cmd_list_element
*cmd
;
2751 QUIT
; /* Allow user to bail out with ^C. */
2752 action_exp
= action
->line
;
2753 while (isspace ((int) *action_exp
))
2756 /* The collection actions to be done while stepping are
2757 bracketed by the commands "while-stepping" and "end". */
2759 if (*action_exp
== '#') /* comment line */
2762 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2764 error (_("Bad action list item: %s"), action_exp
);
2766 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2770 for (i
= 0; i
< action
->body_count
; ++i
)
2771 trace_dump_actions (action
->body_list
[i
],
2772 1, stepping_frame
, from_tty
);
2774 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2776 /* Display the collected data.
2777 For the trap frame, display only what was collected at
2778 the trap. Likewise for stepping frames, display only
2779 what was collected while stepping. This means that the
2780 two boolean variables, STEPPING_FRAME and
2781 STEPPING_ACTIONS should be equal. */
2782 if (stepping_frame
== stepping_actions
)
2784 if (*action_exp
== '/')
2785 action_exp
= decode_agent_options (action_exp
);
2788 { /* Repeat over a comma-separated list. */
2789 QUIT
; /* Allow user to bail out with ^C. */
2790 if (*action_exp
== ',')
2792 while (isspace ((int) *action_exp
))
2795 next_comma
= strchr (action_exp
, ',');
2797 if (0 == strncasecmp (action_exp
, "$reg", 4))
2798 registers_info (NULL
, from_tty
);
2799 else if (0 == strncasecmp (action_exp
, "$_ret", 5))
2801 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2802 locals_info (NULL
, from_tty
);
2803 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2804 args_info (NULL
, from_tty
);
2809 make_cleanup (replace_comma
, next_comma
);
2812 printf_filtered ("%s = ", action_exp
);
2813 output_command (action_exp
, from_tty
);
2814 printf_filtered ("\n");
2818 action_exp
= next_comma
;
2820 while (action_exp
&& *action_exp
== ',');
2826 /* The tdump command. */
2829 trace_dump_command (char *args
, int from_tty
)
2831 struct regcache
*regcache
;
2832 struct tracepoint
*t
;
2833 int stepping_frame
= 0;
2834 struct bp_location
*loc
;
2835 char *line
, *default_collect_line
= NULL
;
2836 struct command_line
*actions
, *default_collect_action
= NULL
;
2837 struct cleanup
*old_chain
= NULL
;
2839 if (tracepoint_number
== -1)
2841 warning (_("No current trace frame."));
2845 t
= get_tracepoint (tracepoint_number
);
2848 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2851 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2852 tracepoint_number
, traceframe_number
);
2854 /* The current frame is a trap frame if the frame PC is equal
2855 to the tracepoint PC. If not, then the current frame was
2856 collected during single-stepping. */
2858 regcache
= get_current_regcache ();
2860 /* If the traceframe's address matches any of the tracepoint's
2861 locations, assume it is a direct hit rather than a while-stepping
2862 frame. (FIXME this is not reliable, should record each frame's
2865 for (loc
= t
->base
.loc
; loc
; loc
= loc
->next
)
2866 if (loc
->address
== regcache_read_pc (regcache
))
2869 actions
= breakpoint_commands (&t
->base
);
2871 /* If there is a default-collect list, make up a collect command,
2872 prepend to the tracepoint's commands, and pass the whole mess to
2873 the trace dump scanner. We need to validate because
2874 default-collect might have been junked since the trace run. */
2875 if (*default_collect
)
2877 default_collect_line
= xstrprintf ("collect %s", default_collect
);
2878 old_chain
= make_cleanup (xfree
, default_collect_line
);
2879 line
= default_collect_line
;
2880 validate_actionline (&line
, &t
->base
);
2881 default_collect_action
= xmalloc (sizeof (struct command_line
));
2882 make_cleanup (xfree
, default_collect_action
);
2883 default_collect_action
->next
= actions
;
2884 default_collect_action
->line
= line
;
2885 actions
= default_collect_action
;
2888 trace_dump_actions (actions
, 0, stepping_frame
, from_tty
);
2890 if (*default_collect
)
2891 do_cleanups (old_chain
);
2894 /* Encode a piece of a tracepoint's source-level definition in a form
2895 that is suitable for both protocol and saving in files. */
2896 /* This version does not do multiple encodes for long strings; it should
2897 return an offset to the next piece to encode. FIXME */
2900 encode_source_string (int tpnum
, ULONGEST addr
,
2901 char *srctype
, char *src
, char *buf
, int buf_size
)
2903 if (80 + strlen (srctype
) > buf_size
)
2904 error (_("Buffer too small for source encoding"));
2905 sprintf (buf
, "%x:%s:%s:%x:%x:",
2906 tpnum
, phex_nz (addr
, sizeof (addr
)),
2907 srctype
, 0, (int) strlen (src
));
2908 if (strlen (buf
) + strlen (src
) * 2 >= buf_size
)
2909 error (_("Source string too long for buffer"));
2910 bin2hex (src
, buf
+ strlen (buf
), 0);
2914 extern int trace_regblock_size
;
2916 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2917 non-zero, the save is performed on the target, otherwise GDB obtains all
2918 trace data and saves it locally. */
2921 trace_save (const char *filename
, int target_does_save
)
2923 struct cleanup
*cleanup
;
2925 struct trace_status
*ts
= current_trace_status ();
2928 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
2929 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
2933 ULONGEST offset
= 0;
2934 #define MAX_TRACE_UPLOAD 2000
2935 gdb_byte buf
[MAX_TRACE_UPLOAD
];
2938 /* If the target is to save the data to a file on its own, then just
2939 send the command and be done with it. */
2940 if (target_does_save
)
2942 err
= target_save_trace_data (filename
);
2944 error (_("Target failed to save trace data to '%s'."),
2949 /* Get the trace status first before opening the file, so if the
2950 target is losing, we can get out without touching files. */
2951 status
= target_get_trace_status (ts
);
2953 pathname
= tilde_expand (filename
);
2954 cleanup
= make_cleanup (xfree
, pathname
);
2956 fp
= fopen (pathname
, "wb");
2958 error (_("Unable to open file '%s' for saving trace data (%s)"),
2959 filename
, safe_strerror (errno
));
2960 make_cleanup_fclose (fp
);
2962 /* Write a file header, with a high-bit-set char to indicate a
2963 binary file, plus a hint as what this file is, and a version
2964 number in case of future needs. */
2965 written
= fwrite ("\x7fTRACE0\n", 8, 1, fp
);
2967 perror_with_name (pathname
);
2969 /* Write descriptive info. */
2971 /* Write out the size of a register block. */
2972 fprintf (fp
, "R %x\n", trace_regblock_size
);
2974 /* Write out status of the tracing run (aka "tstatus" info). */
2975 fprintf (fp
, "status %c;%s",
2976 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
2977 if (ts
->stop_reason
== tracepoint_error
)
2979 char *buf
= (char *) alloca (strlen (ts
->stop_desc
) * 2 + 1);
2981 bin2hex ((gdb_byte
*) ts
->stop_desc
, buf
, 0);
2982 fprintf (fp
, ":%s", buf
);
2984 fprintf (fp
, ":%x", ts
->stopping_tracepoint
);
2985 if (ts
->traceframe_count
>= 0)
2986 fprintf (fp
, ";tframes:%x", ts
->traceframe_count
);
2987 if (ts
->traceframes_created
>= 0)
2988 fprintf (fp
, ";tcreated:%x", ts
->traceframes_created
);
2989 if (ts
->buffer_free
>= 0)
2990 fprintf (fp
, ";tfree:%x", ts
->buffer_free
);
2991 if (ts
->buffer_size
>= 0)
2992 fprintf (fp
, ";tsize:%x", ts
->buffer_size
);
2993 if (ts
->disconnected_tracing
)
2994 fprintf (fp
, ";disconn:%x", ts
->disconnected_tracing
);
2995 if (ts
->circular_buffer
)
2996 fprintf (fp
, ";circular:%x", ts
->circular_buffer
);
2999 /* Note that we want to upload tracepoints and save those, rather
3000 than simply writing out the local ones, because the user may have
3001 changed tracepoints in GDB in preparation for a future tracing
3002 run, or maybe just mass-deleted all types of breakpoints as part
3003 of cleaning up. So as not to contaminate the session, leave the
3004 data in its uploaded form, don't make into real tracepoints. */
3006 /* Get trace state variables first, they may be checked when parsing
3007 uploaded commands. */
3009 target_upload_trace_state_variables (&uploaded_tsvs
);
3011 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
3017 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
3018 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
3021 fprintf (fp
, "tsv %x:%s:%x:%s\n",
3022 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
3023 utsv
->builtin
, buf
);
3029 free_uploaded_tsvs (&uploaded_tsvs
);
3031 target_upload_tracepoints (&uploaded_tps
);
3033 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
3034 target_get_tracepoint_status (NULL
, utp
);
3036 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
3038 fprintf (fp
, "tp T%x:%s:%c:%x:%x",
3039 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
3040 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
3041 if (utp
->type
== bp_fast_tracepoint
)
3042 fprintf (fp
, ":F%x", utp
->orig_size
);
3044 fprintf (fp
, ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
3047 for (a
= 0; VEC_iterate (char_ptr
, utp
->actions
, a
, act
); ++a
)
3048 fprintf (fp
, "tp A%x:%s:%s\n",
3049 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
3050 for (a
= 0; VEC_iterate (char_ptr
, utp
->step_actions
, a
, act
); ++a
)
3051 fprintf (fp
, "tp S%x:%s:%s\n",
3052 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)), act
);
3055 encode_source_string (utp
->number
, utp
->addr
,
3056 "at", utp
->at_string
, buf
, MAX_TRACE_UPLOAD
);
3057 fprintf (fp
, "tp Z%s\n", buf
);
3059 if (utp
->cond_string
)
3061 encode_source_string (utp
->number
, utp
->addr
,
3062 "cond", utp
->cond_string
,
3063 buf
, MAX_TRACE_UPLOAD
);
3064 fprintf (fp
, "tp Z%s\n", buf
);
3066 for (a
= 0; VEC_iterate (char_ptr
, utp
->cmd_strings
, a
, act
); ++a
)
3068 encode_source_string (utp
->number
, utp
->addr
, "cmd", act
,
3069 buf
, MAX_TRACE_UPLOAD
);
3070 fprintf (fp
, "tp Z%s\n", buf
);
3072 fprintf (fp
, "tp V%x:%s:%x:%s\n",
3073 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
3075 phex_nz (utp
->traceframe_usage
,
3076 sizeof (utp
->traceframe_usage
)));
3079 free_uploaded_tps (&uploaded_tps
);
3081 /* Mark the end of the definition section. */
3084 /* Get and write the trace data proper. We ask for big blocks, in
3085 the hopes of efficiency, but will take less if the target has
3086 packet size limitations or some such. */
3089 gotten
= target_get_raw_trace_data (buf
, offset
, MAX_TRACE_UPLOAD
);
3091 error (_("Failure to get requested trace buffer data"));
3092 /* No more data is forthcoming, we're done. */
3095 written
= fwrite (buf
, gotten
, 1, fp
);
3097 perror_with_name (pathname
);
3101 /* Mark the end of trace data. (We know that gotten is 0 at this point.) */
3102 written
= fwrite (&gotten
, 4, 1, fp
);
3104 perror_with_name (pathname
);
3106 do_cleanups (cleanup
);
3110 trace_save_command (char *args
, int from_tty
)
3112 int target_does_save
= 0;
3114 char *filename
= NULL
;
3115 struct cleanup
*back_to
;
3118 error_no_arg (_("file in which to save trace data"));
3120 argv
= gdb_buildargv (args
);
3121 back_to
= make_cleanup_freeargv (argv
);
3123 for (; *argv
; ++argv
)
3125 if (strcmp (*argv
, "-r") == 0)
3126 target_does_save
= 1;
3127 else if (**argv
== '-')
3128 error (_("unknown option `%s'"), *argv
);
3134 error_no_arg (_("file in which to save trace data"));
3136 trace_save (filename
, target_does_save
);
3139 printf_filtered (_("Trace data saved to file '%s'.\n"), filename
);
3141 do_cleanups (back_to
);
3144 /* Tell the target what to do with an ongoing tracing run if GDB
3145 disconnects for some reason. */
3148 set_disconnected_tracing (char *args
, int from_tty
,
3149 struct cmd_list_element
*c
)
3151 target_set_disconnected_tracing (disconnected_tracing
);
3155 set_circular_trace_buffer (char *args
, int from_tty
,
3156 struct cmd_list_element
*c
)
3158 target_set_circular_trace_buffer (circular_trace_buffer
);
3162 set_trace_user (char *args
, int from_tty
,
3163 struct cmd_list_element
*c
)
3167 ret
= target_set_trace_notes (trace_user
, NULL
, NULL
);
3170 warning ("Target does not support trace notes, user ignored");
3174 set_trace_notes (char *args
, int from_tty
,
3175 struct cmd_list_element
*c
)
3179 ret
= target_set_trace_notes (NULL
, trace_notes
, NULL
);
3182 warning ("Target does not support trace notes, note ignored");
3186 set_trace_stop_notes (char *args
, int from_tty
,
3187 struct cmd_list_element
*c
)
3191 ret
= target_set_trace_notes (NULL
, NULL
, trace_stop_notes
);
3194 warning ("Target does not support trace notes, stop note ignored");
3197 /* Convert the memory pointed to by mem into hex, placing result in buf.
3198 * Return a pointer to the last char put in buf (null)
3199 * "stolen" from sparc-stub.c
3202 static const char hexchars
[] = "0123456789abcdef";
3205 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
3213 *buf
++ = hexchars
[ch
>> 4];
3214 *buf
++ = hexchars
[ch
& 0xf];
3223 get_traceframe_number (void)
3225 return traceframe_number
;
3228 /* Make the traceframe NUM be the current trace frame. Does nothing
3229 if NUM is already current. */
3232 set_current_traceframe (int num
)
3236 if (traceframe_number
== num
)
3238 /* Nothing to do. */
3242 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
3245 warning (_("could not change traceframe"));
3247 traceframe_number
= newnum
;
3249 /* Changing the traceframe changes our view of registers and of the
3251 registers_changed ();
3253 clear_traceframe_info ();
3256 /* Make the traceframe NUM be the current trace frame, and do nothing
3260 set_traceframe_number (int num
)
3262 traceframe_number
= num
;
3265 /* A cleanup used when switching away and back from tfind mode. */
3267 struct current_traceframe_cleanup
3269 /* The traceframe we were inspecting. */
3270 int traceframe_number
;
3274 do_restore_current_traceframe_cleanup (void *arg
)
3276 struct current_traceframe_cleanup
*old
= arg
;
3278 set_current_traceframe (old
->traceframe_number
);
3282 restore_current_traceframe_cleanup_dtor (void *arg
)
3284 struct current_traceframe_cleanup
*old
= arg
;
3290 make_cleanup_restore_current_traceframe (void)
3292 struct current_traceframe_cleanup
*old
;
3294 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
3295 old
->traceframe_number
= traceframe_number
;
3297 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
3298 restore_current_traceframe_cleanup_dtor
);
3302 make_cleanup_restore_traceframe_number (void)
3304 return make_cleanup_restore_integer (&traceframe_number
);
3307 /* Given a number and address, return an uploaded tracepoint with that
3308 number, creating if necessary. */
3310 struct uploaded_tp
*
3311 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
3313 struct uploaded_tp
*utp
;
3315 for (utp
= *utpp
; utp
; utp
= utp
->next
)
3316 if (utp
->number
== num
&& utp
->addr
== addr
)
3318 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
3319 memset (utp
, 0, sizeof (struct uploaded_tp
));
3322 utp
->actions
= NULL
;
3323 utp
->step_actions
= NULL
;
3324 utp
->cmd_strings
= NULL
;
3331 free_uploaded_tps (struct uploaded_tp
**utpp
)
3333 struct uploaded_tp
*next_one
;
3337 next_one
= (*utpp
)->next
;
3343 /* Given a number and address, return an uploaded tracepoint with that
3344 number, creating if necessary. */
3346 struct uploaded_tsv
*
3347 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
3349 struct uploaded_tsv
*utsv
;
3351 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
3352 if (utsv
->number
== num
)
3354 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
3355 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
3357 utsv
->next
= *utsvp
;
3363 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
3365 struct uploaded_tsv
*next_one
;
3369 next_one
= (*utsvp
)->next
;
3375 /* FIXME this function is heuristic and will miss the cases where the
3376 conditional is semantically identical but differs in whitespace,
3377 such as "x == 0" vs "x==0". */
3380 cond_string_is_same (char *str1
, char *str2
)
3382 if (str1
== NULL
|| str2
== NULL
)
3383 return (str1
== str2
);
3385 return (strcmp (str1
, str2
) == 0);
3388 /* Look for an existing tracepoint that seems similar enough to the
3389 uploaded one. Enablement isn't compared, because the user can
3390 toggle that freely, and may have done so in anticipation of the
3391 next trace run. Return the location of matched tracepoint. */
3393 struct bp_location
*
3394 find_matching_tracepoint_location (struct uploaded_tp
*utp
)
3396 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
3398 struct breakpoint
*b
;
3399 struct bp_location
*loc
;
3401 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, b
); ix
++)
3403 struct tracepoint
*t
= (struct tracepoint
*) b
;
3405 if (b
->type
== utp
->type
3406 && t
->step_count
== utp
->step
3407 && t
->pass_count
== utp
->pass
3408 && cond_string_is_same (t
->base
.cond_string
, utp
->cond_string
)
3409 /* FIXME also test actions. */
3412 /* Scan the locations for an address match. */
3413 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
3415 if (loc
->address
== utp
->addr
)
3423 /* Given a list of tracepoints uploaded from a target, attempt to
3424 match them up with existing tracepoints, and create new ones if not
3428 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
3430 struct uploaded_tp
*utp
;
3432 /* Look for GDB tracepoints that match up with our uploaded versions. */
3433 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
3435 struct bp_location
*loc
;
3436 struct tracepoint
*t
;
3438 loc
= find_matching_tracepoint_location (utp
);
3441 /* Mark this location as already inserted. */
3443 t
= (struct tracepoint
*) loc
->owner
;
3444 printf_filtered (_("Assuming tracepoint %d is same "
3445 "as target's tracepoint %d at %s.\n"),
3446 loc
->owner
->number
, utp
->number
,
3447 paddress (loc
->gdbarch
, utp
->addr
));
3451 t
= create_tracepoint_from_upload (utp
);
3453 printf_filtered (_("Created tracepoint %d for "
3454 "target's tracepoint %d at %s.\n"),
3455 t
->base
.number
, utp
->number
,
3456 paddress (get_current_arch (), utp
->addr
));
3458 printf_filtered (_("Failed to create tracepoint for target's "
3459 "tracepoint %d at %s, skipping it.\n"),
3461 paddress (get_current_arch (), utp
->addr
));
3463 /* Whether found or created, record the number used by the
3464 target, to help with mapping target tracepoints back to their
3465 counterparts here. */
3467 t
->number_on_target
= utp
->number
;
3470 free_uploaded_tps (uploaded_tps
);
3473 /* Trace state variables don't have much to identify them beyond their
3474 name, so just use that to detect matches. */
3476 struct trace_state_variable
*
3477 find_matching_tsv (struct uploaded_tsv
*utsv
)
3482 return find_trace_state_variable (utsv
->name
);
3485 struct trace_state_variable
*
3486 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
3488 const char *namebase
;
3491 struct trace_state_variable
*tsv
;
3492 struct cleanup
*old_chain
;
3496 namebase
= utsv
->name
;
3497 buf
= xstrprintf ("%s", namebase
);
3502 buf
= xstrprintf ("%s_%d", namebase
, try_num
++);
3505 /* Fish for a name that is not in use. */
3506 /* (should check against all internal vars?) */
3507 while (find_trace_state_variable (buf
))
3510 buf
= xstrprintf ("%s_%d", namebase
, try_num
++);
3513 old_chain
= make_cleanup (xfree
, buf
);
3515 /* We have an available name, create the variable. */
3516 tsv
= create_trace_state_variable (buf
);
3517 tsv
->initial_value
= utsv
->initial_value
;
3518 tsv
->builtin
= utsv
->builtin
;
3520 do_cleanups (old_chain
);
3525 /* Given a list of uploaded trace state variables, try to match them
3526 up with existing variables, or create additional ones. */
3529 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
3532 struct uploaded_tsv
*utsv
;
3533 struct trace_state_variable
*tsv
;
3536 /* Most likely some numbers will have to be reassigned as part of
3537 the merge, so clear them all in anticipation. */
3538 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3541 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
3543 tsv
= find_matching_tsv (utsv
);
3547 printf_filtered (_("Assuming trace state variable $%s "
3548 "is same as target's variable %d.\n"),
3549 tsv
->name
, utsv
->number
);
3553 tsv
= create_tsv_from_upload (utsv
);
3555 printf_filtered (_("Created trace state variable "
3556 "$%s for target's variable %d.\n"),
3557 tsv
->name
, utsv
->number
);
3559 /* Give precedence to numberings that come from the target. */
3561 tsv
->number
= utsv
->number
;
3564 /* Renumber everything that didn't get a target-assigned number. */
3566 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3567 if (tsv
->number
> highest
)
3568 highest
= tsv
->number
;
3571 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
3572 if (tsv
->number
== 0)
3573 tsv
->number
= highest
++;
3575 free_uploaded_tsvs (uploaded_tsvs
);
3578 /* target tfile command */
3580 struct target_ops tfile_ops
;
3582 /* Fill in tfile_ops with its defined operations and properties. */
3584 #define TRACE_HEADER_SIZE 8
3586 char *trace_filename
;
3588 off_t trace_frames_offset
;
3590 int cur_traceframe_number
;
3592 int trace_regblock_size
;
3594 static void tfile_interp_line (char *line
,
3595 struct uploaded_tp
**utpp
,
3596 struct uploaded_tsv
**utsvp
);
3598 /* Read SIZE bytes into READBUF from the trace frame, starting at
3599 TRACE_FD's current position. Note that this call `read'
3600 underneath, hence it advances the file's seek position. Throws an
3601 error if the `read' syscall fails, or less than SIZE bytes are
3605 tfile_read (gdb_byte
*readbuf
, int size
)
3609 gotten
= read (trace_fd
, readbuf
, size
);
3611 perror_with_name (trace_filename
);
3612 else if (gotten
< size
)
3613 error (_("Premature end of file while reading trace file"));
3617 tfile_open (char *filename
, int from_tty
)
3619 volatile struct gdb_exception ex
;
3621 struct cleanup
*old_chain
;
3624 char header
[TRACE_HEADER_SIZE
];
3625 char linebuf
[1000]; /* Should be max remote packet size or so. */
3628 struct trace_status
*ts
;
3629 struct uploaded_tp
*uploaded_tps
= NULL
;
3630 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3632 target_preopen (from_tty
);
3634 error (_("No trace file specified."));
3636 filename
= tilde_expand (filename
);
3637 if (!IS_ABSOLUTE_PATH(filename
))
3639 temp
= concat (current_directory
, "/", filename
, (char *) NULL
);
3644 old_chain
= make_cleanup (xfree
, filename
);
3646 flags
= O_BINARY
| O_LARGEFILE
;
3648 scratch_chan
= open (filename
, flags
, 0);
3649 if (scratch_chan
< 0)
3650 perror_with_name (filename
);
3652 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3654 discard_cleanups (old_chain
); /* Don't free filename any more. */
3655 unpush_target (&tfile_ops
);
3657 trace_filename
= xstrdup (filename
);
3658 trace_fd
= scratch_chan
;
3661 /* Read the file header and test for validity. */
3662 tfile_read ((gdb_byte
*) &header
, TRACE_HEADER_SIZE
);
3664 bytes
+= TRACE_HEADER_SIZE
;
3665 if (!(header
[0] == 0x7f
3666 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
3667 error (_("File is not a valid trace file."));
3669 push_target (&tfile_ops
);
3671 trace_regblock_size
= 0;
3672 ts
= current_trace_status ();
3673 /* We know we're working with a file. */
3675 /* Set defaults in case there is no status line. */
3676 ts
->running_known
= 0;
3677 ts
->stop_reason
= trace_stop_reason_unknown
;
3678 ts
->traceframe_count
= -1;
3679 ts
->buffer_free
= 0;
3680 ts
->disconnected_tracing
= 0;
3681 ts
->circular_buffer
= 0;
3683 cur_traceframe_number
= -1;
3685 TRY_CATCH (ex
, RETURN_MASK_ALL
)
3687 /* Read through a section of newline-terminated lines that
3688 define things like tracepoints. */
3692 tfile_read (&byte
, 1);
3697 /* Empty line marks end of the definition section. */
3702 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
3705 linebuf
[i
++] = byte
;
3707 error (_("Excessively long lines in trace file"));
3710 /* Record the starting offset of the binary trace data. */
3711 trace_frames_offset
= bytes
;
3713 /* If we don't have a blocksize, we can't interpret the
3715 if (trace_regblock_size
== 0)
3716 error (_("No register block size recorded in trace file"));
3720 /* Pop the partially set up target. */
3722 throw_exception (ex
);
3725 inferior_appeared (current_inferior (), TFILE_PID
);
3726 inferior_ptid
= pid_to_ptid (TFILE_PID
);
3727 add_thread_silent (inferior_ptid
);
3729 if (ts
->traceframe_count
<= 0)
3730 warning (_("No traceframes present in this file."));
3732 /* Add the file's tracepoints and variables into the current mix. */
3734 /* Get trace state variables first, they may be checked when parsing
3735 uploaded commands. */
3736 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3738 merge_uploaded_tracepoints (&uploaded_tps
);
3740 post_create_inferior (&tfile_ops
, from_tty
);
3743 /* Interpret the given line from the definitions part of the trace
3747 tfile_interp_line (char *line
,
3748 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
3752 if (strncmp (p
, "R ", strlen ("R ")) == 0)
3755 trace_regblock_size
= strtol (p
, &p
, 16);
3757 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
3759 p
+= strlen ("status ");
3760 parse_trace_status (p
, current_trace_status ());
3762 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
3764 p
+= strlen ("tp ");
3765 parse_tracepoint_definition (p
, utpp
);
3767 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
3769 p
+= strlen ("tsv ");
3770 parse_tsv_definition (p
, utsvp
);
3773 warning (_("Ignoring trace file definition \"%s\""), line
);
3776 /* Parse the part of trace status syntax that is shared between
3777 the remote protocol and the trace file reader. */
3780 parse_trace_status (char *line
, struct trace_status
*ts
)
3782 char *p
= line
, *p1
, *p2
, *p3
, *p_temp
;
3786 ts
->running_known
= 1;
3787 ts
->running
= (*p
++ == '1');
3788 ts
->stop_reason
= trace_stop_reason_unknown
;
3789 xfree (ts
->stop_desc
);
3790 ts
->stop_desc
= NULL
;
3791 ts
->traceframe_count
= -1;
3792 ts
->traceframes_created
= -1;
3793 ts
->buffer_free
= -1;
3794 ts
->buffer_size
= -1;
3795 ts
->disconnected_tracing
= 0;
3796 ts
->circular_buffer
= 0;
3797 xfree (ts
->user_name
);
3798 ts
->user_name
= NULL
;
3801 ts
->start_time
= ts
->stop_time
= 0;
3805 p1
= strchr (p
, ':');
3807 error (_("Malformed trace status, at %s\n\
3808 Status line: '%s'\n"), p
, line
);
3809 p3
= strchr (p
, ';');
3811 p3
= p
+ strlen (p
);
3812 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
3814 p
= unpack_varlen_hex (++p1
, &val
);
3815 ts
->stop_reason
= trace_buffer_full
;
3817 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
3819 p
= unpack_varlen_hex (++p1
, &val
);
3820 ts
->stop_reason
= trace_never_run
;
3822 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
],
3825 p
= unpack_varlen_hex (++p1
, &val
);
3826 ts
->stop_reason
= tracepoint_passcount
;
3827 ts
->stopping_tracepoint
= val
;
3829 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
3831 p2
= strchr (++p1
, ':');
3839 ts
->stop_desc
= xmalloc (strlen (line
));
3840 end
= hex2bin (p1
, ts
->stop_desc
, (p2
- p1
) / 2);
3841 ts
->stop_desc
[end
] = '\0';
3844 ts
->stop_desc
= xstrdup ("");
3846 p
= unpack_varlen_hex (++p2
, &val
);
3847 ts
->stop_reason
= tstop_command
;
3849 else if (strncmp (p
, stop_reason_names
[trace_disconnected
], p1
- p
) == 0)
3851 p
= unpack_varlen_hex (++p1
, &val
);
3852 ts
->stop_reason
= trace_disconnected
;
3854 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
3856 p2
= strchr (++p1
, ':');
3859 ts
->stop_desc
= xmalloc ((p2
- p1
) / 2 + 1);
3860 end
= hex2bin (p1
, ts
->stop_desc
, (p2
- p1
) / 2);
3861 ts
->stop_desc
[end
] = '\0';
3864 ts
->stop_desc
= xstrdup ("");
3866 p
= unpack_varlen_hex (++p2
, &val
);
3867 ts
->stopping_tracepoint
= val
;
3868 ts
->stop_reason
= tracepoint_error
;
3870 else if (strncmp (p
, "tframes", p1
- p
) == 0)
3872 p
= unpack_varlen_hex (++p1
, &val
);
3873 ts
->traceframe_count
= val
;
3875 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
3877 p
= unpack_varlen_hex (++p1
, &val
);
3878 ts
->traceframes_created
= val
;
3880 else if (strncmp (p
, "tfree", p1
- p
) == 0)
3882 p
= unpack_varlen_hex (++p1
, &val
);
3883 ts
->buffer_free
= val
;
3885 else if (strncmp (p
, "tsize", p1
- p
) == 0)
3887 p
= unpack_varlen_hex (++p1
, &val
);
3888 ts
->buffer_size
= val
;
3890 else if (strncmp (p
, "disconn", p1
- p
) == 0)
3892 p
= unpack_varlen_hex (++p1
, &val
);
3893 ts
->disconnected_tracing
= val
;
3895 else if (strncmp (p
, "circular", p1
- p
) == 0)
3897 p
= unpack_varlen_hex (++p1
, &val
);
3898 ts
->circular_buffer
= val
;
3900 else if (strncmp (p
, "starttime", p1
- p
) == 0)
3902 p
= unpack_varlen_hex (++p1
, &val
);
3903 ts
->start_time
= val
;
3905 else if (strncmp (p
, "stoptime", p1
- p
) == 0)
3907 p
= unpack_varlen_hex (++p1
, &val
);
3908 ts
->stop_time
= val
;
3910 else if (strncmp (p
, "username", p1
- p
) == 0)
3913 ts
->user_name
= xmalloc (strlen (p
) / 2);
3914 end
= hex2bin (p1
, ts
->user_name
, (p3
- p1
) / 2);
3915 ts
->user_name
[end
] = '\0';
3918 else if (strncmp (p
, "notes", p1
- p
) == 0)
3921 ts
->notes
= xmalloc (strlen (p
) / 2);
3922 end
= hex2bin (p1
, ts
->notes
, (p3
- p1
) / 2);
3923 ts
->notes
[end
] = '\0';
3928 /* Silently skip unknown optional info. */
3929 p_temp
= strchr (p1
+ 1, ';');
3933 /* Must be at the end. */
3940 parse_tracepoint_status (char *p
, struct breakpoint
*bp
,
3941 struct uploaded_tp
*utp
)
3944 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
3946 p
= unpack_varlen_hex (p
, &uval
);
3948 tp
->base
.hit_count
+= uval
;
3950 utp
->hit_count
+= uval
;
3951 p
= unpack_varlen_hex (p
+ 1, &uval
);
3953 tp
->traceframe_usage
+= uval
;
3955 utp
->traceframe_usage
+= uval
;
3956 /* Ignore any extra, allowing for future extensions. */
3959 /* Given a line of text defining a part of a tracepoint, parse it into
3960 an "uploaded tracepoint". */
3963 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
3967 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
, start
;
3970 char *cond
, *srctype
, *buf
;
3971 struct uploaded_tp
*utp
= NULL
;
3974 /* Both tracepoint and action definitions start with the same number
3975 and address sequence. */
3977 p
= unpack_varlen_hex (p
, &num
);
3978 p
++; /* skip a colon */
3979 p
= unpack_varlen_hex (p
, &addr
);
3980 p
++; /* skip a colon */
3983 enabled
= (*p
++ == 'E');
3984 p
++; /* skip a colon */
3985 p
= unpack_varlen_hex (p
, &step
);
3986 p
++; /* skip a colon */
3987 p
= unpack_varlen_hex (p
, &pass
);
3988 type
= bp_tracepoint
;
3990 /* Thumb through optional fields. */
3993 p
++; /* skip a colon */
3996 type
= bp_fast_tracepoint
;
3998 p
= unpack_varlen_hex (p
, &orig_size
);
4002 type
= bp_static_tracepoint
;
4008 p
= unpack_varlen_hex (p
, &xlen
);
4009 p
++; /* skip a comma */
4010 cond
= (char *) xmalloc (2 * xlen
+ 1);
4011 strncpy (cond
, p
, 2 * xlen
);
4012 cond
[2 * xlen
] = '\0';
4016 warning (_("Unrecognized char '%c' in tracepoint "
4017 "definition, skipping rest"), *p
);
4019 utp
= get_uploaded_tp (num
, addr
, utpp
);
4021 utp
->enabled
= enabled
;
4026 else if (piece
== 'A')
4028 utp
= get_uploaded_tp (num
, addr
, utpp
);
4029 VEC_safe_push (char_ptr
, utp
->actions
, xstrdup (p
));
4031 else if (piece
== 'S')
4033 utp
= get_uploaded_tp (num
, addr
, utpp
);
4034 VEC_safe_push (char_ptr
, utp
->step_actions
, xstrdup (p
));
4036 else if (piece
== 'Z')
4038 /* Parse a chunk of source form definition. */
4039 utp
= get_uploaded_tp (num
, addr
, utpp
);
4041 p
= strchr (p
, ':');
4042 p
++; /* skip a colon */
4043 p
= unpack_varlen_hex (p
, &start
);
4044 p
++; /* skip a colon */
4045 p
= unpack_varlen_hex (p
, &xlen
);
4046 p
++; /* skip a colon */
4048 buf
= alloca (strlen (line
));
4050 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
4053 if (strncmp (srctype
, "at:", strlen ("at:")) == 0)
4054 utp
->at_string
= xstrdup (buf
);
4055 else if (strncmp (srctype
, "cond:", strlen ("cond:")) == 0)
4056 utp
->cond_string
= xstrdup (buf
);
4057 else if (strncmp (srctype
, "cmd:", strlen ("cmd:")) == 0)
4058 VEC_safe_push (char_ptr
, utp
->cmd_strings
, xstrdup (buf
));
4060 else if (piece
== 'V')
4062 utp
= get_uploaded_tp (num
, addr
, utpp
);
4064 parse_tracepoint_status (p
, NULL
, utp
);
4068 /* Don't error out, the target might be sending us optional
4069 info that we don't care about. */
4070 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece
);
4074 /* Convert a textual description of a trace state variable into an
4078 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
4081 ULONGEST num
, initval
, builtin
;
4083 struct uploaded_tsv
*utsv
= NULL
;
4085 buf
= alloca (strlen (line
));
4088 p
= unpack_varlen_hex (p
, &num
);
4089 p
++; /* skip a colon */
4090 p
= unpack_varlen_hex (p
, &initval
);
4091 p
++; /* skip a colon */
4092 p
= unpack_varlen_hex (p
, &builtin
);
4093 p
++; /* skip a colon */
4094 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
4097 utsv
= get_uploaded_tsv (num
, utsvp
);
4098 utsv
->initial_value
= initval
;
4099 utsv
->builtin
= builtin
;
4100 utsv
->name
= xstrdup (buf
);
4103 /* Close the trace file and generally clean up. */
4106 tfile_close (int quitting
)
4113 pid
= ptid_get_pid (inferior_ptid
);
4114 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff. */
4115 exit_inferior_silent (pid
);
4119 xfree (trace_filename
);
4120 trace_filename
= NULL
;
4124 tfile_files_info (struct target_ops
*t
)
4126 /* (it would be useful to mention the name of the file). */
4127 printf_filtered ("Looking at a trace file.\n");
4130 /* The trace status for a file is that tracing can never be run. */
4133 tfile_get_trace_status (struct trace_status
*ts
)
4135 /* Other bits of trace status were collected as part of opening the
4136 trace files, so nothing to do here. */
4142 tfile_get_tracepoint_status (struct breakpoint
*tp
, struct uploaded_tp
*utp
)
4144 /* Other bits of trace status were collected as part of opening the
4145 trace files, so nothing to do here. */
4148 /* Given the position of a traceframe in the file, figure out what
4149 address the frame was collected at. This would normally be the
4150 value of a collected PC register, but if not available, we
4154 tfile_get_traceframe_address (off_t tframe_offset
)
4158 struct tracepoint
*tp
;
4159 off_t saved_offset
= cur_offset
;
4161 /* FIXME dig pc out of collected registers. */
4163 /* Fall back to using tracepoint address. */
4164 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
4165 tfile_read ((gdb_byte
*) &tpnum
, 2);
4166 tpnum
= (short) extract_signed_integer ((gdb_byte
*) &tpnum
, 2,
4170 tp
= get_tracepoint_by_number_on_target (tpnum
);
4171 /* FIXME this is a poor heuristic if multiple locations. */
4172 if (tp
&& tp
->base
.loc
)
4173 addr
= tp
->base
.loc
->address
;
4175 /* Restore our seek position. */
4176 cur_offset
= saved_offset
;
4177 lseek (trace_fd
, cur_offset
, SEEK_SET
);
4181 /* Make tfile's selected traceframe match GDB's selected
4185 set_tfile_traceframe (void)
4189 if (cur_traceframe_number
== get_traceframe_number ())
4192 /* Avoid recursion, tfile_trace_find calls us again. */
4193 cur_traceframe_number
= get_traceframe_number ();
4195 newnum
= target_trace_find (tfind_number
,
4196 get_traceframe_number (), 0, 0, NULL
);
4198 /* Should not happen. If it does, all bets are off. */
4199 if (newnum
!= get_traceframe_number ())
4200 warning (_("could not set tfile's traceframe"));
4203 /* Given a type of search and some parameters, scan the collection of
4204 traceframes in the file looking for a match. When found, return
4205 both the traceframe and tracepoint number, otherwise -1 for
4209 tfile_trace_find (enum trace_find_type type
, int num
,
4210 ULONGEST addr1
, ULONGEST addr2
, int *tpp
)
4213 int tfnum
= 0, found
= 0;
4214 unsigned int data_size
;
4215 struct tracepoint
*tp
;
4216 off_t offset
, tframe_offset
;
4219 /* Lookups other than by absolute frame number depend on the current
4220 trace selected, so make sure it is correct on the tfile end
4222 if (type
!= tfind_number
)
4223 set_tfile_traceframe ();
4231 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
4232 offset
= trace_frames_offset
;
4235 tframe_offset
= offset
;
4236 tfile_read ((gdb_byte
*) &tpnum
, 2);
4237 tpnum
= (short) extract_signed_integer ((gdb_byte
*) &tpnum
, 2,
4243 tfile_read ((gdb_byte
*) &data_size
, 4);
4244 data_size
= (unsigned int) extract_unsigned_integer
4245 ((gdb_byte
*) &data_size
, 4,
4246 gdbarch_byte_order (target_gdbarch
));
4255 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4256 if (tfaddr
== addr1
)
4260 tp
= get_tracepoint (num
);
4261 if (tp
&& tpnum
== tp
->number_on_target
)
4265 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4266 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
4270 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
4271 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
4275 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
4281 cur_offset
= offset
;
4282 cur_data_size
= data_size
;
4283 cur_traceframe_number
= tfnum
;
4286 /* Skip past the traceframe's data. */
4287 lseek (trace_fd
, data_size
, SEEK_CUR
);
4288 offset
+= data_size
;
4289 /* Update our own count of traceframes. */
4292 /* Did not find what we were looking for. */
4298 /* Prototype of the callback passed to tframe_walk_blocks. */
4299 typedef int (*walk_blocks_callback_func
) (char blocktype
, void *data
);
4301 /* Callback for traceframe_walk_blocks, used to find a given block
4302 type in a traceframe. */
4305 match_blocktype (char blocktype
, void *data
)
4307 char *wantedp
= data
;
4309 if (*wantedp
== blocktype
)
4315 /* Walk over all traceframe block starting at POS offset from
4316 CUR_OFFSET, and call CALLBACK for each block found, passing in DATA
4317 unmodified. If CALLBACK returns true, this returns the position in
4318 the traceframe where the block is found, relative to the start of
4319 the traceframe (cur_offset). Returns -1 if no callback call
4320 returned true, indicating that all blocks have been walked. */
4323 traceframe_walk_blocks (walk_blocks_callback_func callback
,
4324 int pos
, void *data
)
4326 /* Iterate through a traceframe's blocks, looking for a block of the
4329 lseek (trace_fd
, cur_offset
+ pos
, SEEK_SET
);
4330 while (pos
< cur_data_size
)
4332 unsigned short mlen
;
4335 tfile_read (&block_type
, 1);
4339 if ((*callback
) (block_type
, data
))
4345 lseek (trace_fd
, cur_offset
+ pos
+ trace_regblock_size
, SEEK_SET
);
4346 pos
+= trace_regblock_size
;
4349 lseek (trace_fd
, cur_offset
+ pos
+ 8, SEEK_SET
);
4350 tfile_read ((gdb_byte
*) &mlen
, 2);
4351 mlen
= (unsigned short)
4352 extract_unsigned_integer ((gdb_byte
*) &mlen
, 2,
4355 lseek (trace_fd
, mlen
, SEEK_CUR
);
4356 pos
+= (8 + 2 + mlen
);
4359 lseek (trace_fd
, cur_offset
+ pos
+ 4 + 8, SEEK_SET
);
4363 error (_("Unknown block type '%c' (0x%x) in trace frame"),
4364 block_type
, block_type
);
4372 /* Convenience wrapper around traceframe_walk_blocks. Looks for the
4373 position offset of a block of type TYPE_WANTED in the current trace
4374 frame, starting at POS. Returns -1 if no such block was found. */
4377 traceframe_find_block_type (char type_wanted
, int pos
)
4379 return traceframe_walk_blocks (match_blocktype
, pos
, &type_wanted
);
4382 /* Look for a block of saved registers in the traceframe, and get the
4383 requested register from it. */
4386 tfile_fetch_registers (struct target_ops
*ops
,
4387 struct regcache
*regcache
, int regno
)
4389 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
4391 int pos
, offset
, regn
, regsize
, pc_regno
;
4392 unsigned short mlen
;
4395 /* An uninitialized reg size says we're not going to be
4396 successful at getting register blocks. */
4397 if (!trace_regblock_size
)
4400 set_tfile_traceframe ();
4402 regs
= alloca (trace_regblock_size
);
4404 if (traceframe_find_block_type ('R', 0) >= 0)
4406 tfile_read (regs
, trace_regblock_size
);
4408 /* Assume the block is laid out in GDB register number order,
4409 each register with the size that it has in GDB. */
4411 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
4413 regsize
= register_size (gdbarch
, regn
);
4414 /* Make sure we stay within block bounds. */
4415 if (offset
+ regsize
>= trace_regblock_size
)
4417 if (regcache_register_status (regcache
, regn
) == REG_UNKNOWN
)
4421 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
4424 else if (regno
== -1)
4426 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
4434 /* We get here if no register data has been found. Mark registers
4436 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
4437 regcache_raw_supply (regcache
, regn
, NULL
);
4439 /* We can often usefully guess that the PC is going to be the same
4440 as the address of the tracepoint. */
4441 pc_regno
= gdbarch_pc_regnum (gdbarch
);
4442 if (pc_regno
>= 0 && (regno
== -1 || regno
== pc_regno
))
4444 struct tracepoint
*tp
= get_tracepoint (tracepoint_number
);
4446 if (tp
&& tp
->base
.loc
)
4448 /* But don't try to guess if tracepoint is multi-location... */
4449 if (tp
->base
.loc
->next
)
4451 warning (_("Tracepoint %d has multiple "
4452 "locations, cannot infer $pc"),
4456 /* ... or does while-stepping. */
4457 if (tp
->step_count
> 0)
4459 warning (_("Tracepoint %d does while-stepping, "
4460 "cannot infer $pc"),
4465 store_unsigned_integer (regs
, register_size (gdbarch
, pc_regno
),
4466 gdbarch_byte_order (gdbarch
),
4467 tp
->base
.loc
->address
);
4468 regcache_raw_supply (regcache
, pc_regno
, regs
);
4474 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
4475 const char *annex
, gdb_byte
*readbuf
,
4476 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
4478 /* We're only doing regular memory for now. */
4479 if (object
!= TARGET_OBJECT_MEMORY
)
4482 if (readbuf
== NULL
)
4483 error (_("tfile_xfer_partial: trace file is read-only"));
4485 set_tfile_traceframe ();
4487 if (traceframe_number
!= -1)
4491 /* Iterate through the traceframe's blocks, looking for
4493 while ((pos
= traceframe_find_block_type ('M', pos
)) >= 0)
4495 ULONGEST maddr
, amt
;
4496 unsigned short mlen
;
4497 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch
);
4499 tfile_read ((gdb_byte
*) &maddr
, 8);
4500 maddr
= extract_unsigned_integer ((gdb_byte
*) &maddr
, 8,
4502 tfile_read ((gdb_byte
*) &mlen
, 2);
4503 mlen
= (unsigned short)
4504 extract_unsigned_integer ((gdb_byte
*) &mlen
, 2, byte_order
);
4506 /* If the block includes the first part of the desired
4507 range, return as much it has; GDB will re-request the
4508 remainder, which might be in a different block of this
4510 if (maddr
<= offset
&& offset
< (maddr
+ mlen
))
4512 amt
= (maddr
+ mlen
) - offset
;
4516 tfile_read (readbuf
, amt
);
4520 /* Skip over this block. */
4521 pos
+= (8 + 2 + mlen
);
4525 /* It's unduly pedantic to refuse to look at the executable for
4526 read-only pieces; so do the equivalent of readonly regions aka
4528 /* FIXME account for relocation at some point. */
4535 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
4537 if ((s
->flags
& SEC_LOAD
) == 0
4538 || (s
->flags
& SEC_READONLY
) == 0)
4542 size
= bfd_get_section_size (s
);
4543 if (vma
<= offset
&& offset
< (vma
+ size
))
4547 amt
= (vma
+ size
) - offset
;
4551 amt
= bfd_get_section_contents (exec_bfd
, s
,
4552 readbuf
, offset
- vma
, amt
);
4558 /* Indicate failure to find the requested memory block. */
4562 /* Iterate through the blocks of a trace frame, looking for a 'V'
4563 block with a matching tsv number. */
4566 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
4570 set_tfile_traceframe ();
4573 while ((pos
= traceframe_find_block_type ('V', pos
)) >= 0)
4577 tfile_read ((gdb_byte
*) &vnum
, 4);
4578 vnum
= (int) extract_signed_integer ((gdb_byte
*) &vnum
, 4,
4583 tfile_read ((gdb_byte
*) val
, 8);
4584 *val
= extract_signed_integer ((gdb_byte
*) val
, 8,
4592 /* Didn't find anything. */
4597 tfile_has_all_memory (struct target_ops
*ops
)
4603 tfile_has_memory (struct target_ops
*ops
)
4609 tfile_has_stack (struct target_ops
*ops
)
4611 return traceframe_number
!= -1;
4615 tfile_has_registers (struct target_ops
*ops
)
4617 return traceframe_number
!= -1;
4621 tfile_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
4626 /* Callback for traceframe_walk_blocks. Builds a traceframe_info
4627 object for the tfile target's current traceframe. */
4630 build_traceframe_info (char blocktype
, void *data
)
4632 struct traceframe_info
*info
= data
;
4638 struct mem_range
*r
;
4640 unsigned short mlen
;
4642 tfile_read ((gdb_byte
*) &maddr
, 8);
4643 tfile_read ((gdb_byte
*) &mlen
, 2);
4645 r
= VEC_safe_push (mem_range_s
, info
->memory
, NULL
);
4658 warning (_("Unhandled trace block type (%d) '%c ' "
4659 "while building trace frame info."),
4660 blocktype
, blocktype
);
4667 static struct traceframe_info
*
4668 tfile_traceframe_info (void)
4670 struct traceframe_info
*info
= XCNEW (struct traceframe_info
);
4672 traceframe_walk_blocks (build_traceframe_info
, 0, info
);
4677 init_tfile_ops (void)
4679 tfile_ops
.to_shortname
= "tfile";
4680 tfile_ops
.to_longname
= "Local trace dump file";
4682 = "Use a trace file as a target. Specify the filename of the trace file.";
4683 tfile_ops
.to_open
= tfile_open
;
4684 tfile_ops
.to_close
= tfile_close
;
4685 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
4686 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
4687 tfile_ops
.to_files_info
= tfile_files_info
;
4688 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
4689 tfile_ops
.to_get_tracepoint_status
= tfile_get_tracepoint_status
;
4690 tfile_ops
.to_trace_find
= tfile_trace_find
;
4691 tfile_ops
.to_get_trace_state_variable_value
4692 = tfile_get_trace_state_variable_value
;
4693 tfile_ops
.to_stratum
= process_stratum
;
4694 tfile_ops
.to_has_all_memory
= tfile_has_all_memory
;
4695 tfile_ops
.to_has_memory
= tfile_has_memory
;
4696 tfile_ops
.to_has_stack
= tfile_has_stack
;
4697 tfile_ops
.to_has_registers
= tfile_has_registers
;
4698 tfile_ops
.to_traceframe_info
= tfile_traceframe_info
;
4699 tfile_ops
.to_thread_alive
= tfile_thread_alive
;
4700 tfile_ops
.to_magic
= OPS_MAGIC
;
4703 /* Given a line of text defining a static tracepoint marker, parse it
4704 into a "static tracepoint marker" object. Throws an error is
4705 parsing fails. If PP is non-null, it points to one past the end of
4706 the parsed marker definition. */
4709 parse_static_tracepoint_marker_definition (char *line
, char **pp
,
4710 struct static_tracepoint_marker
*marker
)
4717 p
= unpack_varlen_hex (p
, &addr
);
4718 p
++; /* skip a colon */
4720 marker
->gdbarch
= target_gdbarch
;
4721 marker
->address
= (CORE_ADDR
) addr
;
4723 endp
= strchr (p
, ':');
4725 error (_("bad marker definition: %s"), line
);
4727 marker
->str_id
= xmalloc (endp
- p
+ 1);
4728 end
= hex2bin (p
, (gdb_byte
*) marker
->str_id
, (endp
- p
+ 1) / 2);
4729 marker
->str_id
[end
] = '\0';
4732 p
++; /* skip a colon */
4734 marker
->extra
= xmalloc (strlen (p
) + 1);
4735 end
= hex2bin (p
, (gdb_byte
*) marker
->extra
, strlen (p
) / 2);
4736 marker
->extra
[end
] = '\0';
4742 /* Release a static tracepoint marker's contents. Note that the
4743 object itself isn't released here. There objects are usually on
4747 release_static_tracepoint_marker (struct static_tracepoint_marker
*marker
)
4749 xfree (marker
->str_id
);
4750 marker
->str_id
= NULL
;
4753 /* Print MARKER to gdb_stdout. */
4756 print_one_static_tracepoint_marker (int count
,
4757 struct static_tracepoint_marker
*marker
)
4759 struct command_line
*l
;
4762 char wrap_indent
[80];
4763 char extra_field_indent
[80];
4764 struct ui_out
*uiout
= current_uiout
;
4765 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
4766 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4767 struct cleanup
*bkpt_chain
;
4768 VEC(breakpoint_p
) *tracepoints
;
4770 struct symtab_and_line sal
;
4774 sal
.pc
= marker
->address
;
4776 tracepoints
= static_tracepoints_here (marker
->address
);
4778 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "marker");
4780 /* A counter field to help readability. This is not a stable
4782 ui_out_field_int (uiout
, "count", count
);
4784 ui_out_field_string (uiout
, "marker-id", marker
->str_id
);
4786 ui_out_field_fmt (uiout
, "enabled", "%c",
4787 !VEC_empty (breakpoint_p
, tracepoints
) ? 'y' : 'n');
4788 ui_out_spaces (uiout
, 2);
4790 strcpy (wrap_indent
, " ");
4792 if (gdbarch_addr_bit (marker
->gdbarch
) <= 32)
4793 strcat (wrap_indent
, " ");
4795 strcat (wrap_indent
, " ");
4797 strcpy (extra_field_indent
, " ");
4799 ui_out_field_core_addr (uiout
, "addr", marker
->gdbarch
, marker
->address
);
4801 sal
= find_pc_line (marker
->address
, 0);
4802 sym
= find_pc_sect_function (marker
->address
, NULL
);
4805 ui_out_text (uiout
, "in ");
4806 ui_out_field_string (uiout
, "func",
4807 SYMBOL_PRINT_NAME (sym
));
4808 ui_out_wrap_hint (uiout
, wrap_indent
);
4809 ui_out_text (uiout
, " at ");
4812 ui_out_field_skip (uiout
, "func");
4814 if (sal
.symtab
!= NULL
)
4816 ui_out_field_string (uiout
, "file", sal
.symtab
->filename
);
4817 ui_out_text (uiout
, ":");
4819 if (ui_out_is_mi_like_p (uiout
))
4821 char *fullname
= symtab_to_fullname (sal
.symtab
);
4824 ui_out_field_string (uiout
, "fullname", fullname
);
4827 ui_out_field_skip (uiout
, "fullname");
4829 ui_out_field_int (uiout
, "line", sal
.line
);
4833 ui_out_field_skip (uiout
, "fullname");
4834 ui_out_field_skip (uiout
, "line");
4837 ui_out_text (uiout
, "\n");
4838 ui_out_text (uiout
, extra_field_indent
);
4839 ui_out_text (uiout
, _("Data: \""));
4840 ui_out_field_string (uiout
, "extra-data", marker
->extra
);
4841 ui_out_text (uiout
, "\"\n");
4843 if (!VEC_empty (breakpoint_p
, tracepoints
))
4845 struct cleanup
*cleanup_chain
;
4847 struct breakpoint
*b
;
4849 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
,
4852 ui_out_text (uiout
, extra_field_indent
);
4853 ui_out_text (uiout
, _("Probed by static tracepoints: "));
4854 for (ix
= 0; VEC_iterate(breakpoint_p
, tracepoints
, ix
, b
); ix
++)
4857 ui_out_text (uiout
, ", ");
4858 ui_out_text (uiout
, "#");
4859 ui_out_field_int (uiout
, "tracepoint-id", b
->number
);
4862 do_cleanups (cleanup_chain
);
4864 if (ui_out_is_mi_like_p (uiout
))
4865 ui_out_field_int (uiout
, "number-of-tracepoints",
4866 VEC_length(breakpoint_p
, tracepoints
));
4868 ui_out_text (uiout
, "\n");
4870 VEC_free (breakpoint_p
, tracepoints
);
4872 do_cleanups (bkpt_chain
);
4873 do_cleanups (old_chain
);
4877 info_static_tracepoint_markers_command (char *arg
, int from_tty
)
4879 VEC(static_tracepoint_marker_p
) *markers
;
4880 struct cleanup
*old_chain
;
4881 struct static_tracepoint_marker
*marker
;
4882 struct ui_out
*uiout
= current_uiout
;
4886 = make_cleanup_ui_out_table_begin_end (uiout
, 5, -1,
4887 "StaticTracepointMarkersTable");
4889 ui_out_table_header (uiout
, 7, ui_left
, "counter", "Cnt");
4891 ui_out_table_header (uiout
, 40, ui_left
, "marker-id", "ID");
4893 ui_out_table_header (uiout
, 3, ui_left
, "enabled", "Enb");
4894 if (gdbarch_addr_bit (target_gdbarch
) <= 32)
4895 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");
4897 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");
4898 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What");
4900 ui_out_table_body (uiout
);
4902 markers
= target_static_tracepoint_markers_by_strid (NULL
);
4903 make_cleanup (VEC_cleanup (static_tracepoint_marker_p
), &markers
);
4906 VEC_iterate (static_tracepoint_marker_p
,
4907 markers
, i
, marker
);
4910 print_one_static_tracepoint_marker (i
+ 1, marker
);
4911 release_static_tracepoint_marker (marker
);
4914 do_cleanups (old_chain
);
4917 /* The $_sdata convenience variable is a bit special. We don't know
4918 for sure type of the value until we actually have a chance to fetch
4919 the data --- the size of the object depends on what has been
4920 collected. We solve this by making $_sdata be an internalvar that
4921 creates a new value on access. */
4923 /* Return a new value with the correct type for the sdata object of
4924 the current trace frame. Return a void value if there's no object
4927 static struct value
*
4928 sdata_make_value (struct gdbarch
*gdbarch
, struct internalvar
*var
)
4933 /* We need to read the whole object before we know its size. */
4934 size
= target_read_alloc (¤t_target
,
4935 TARGET_OBJECT_STATIC_TRACE_DATA
,
4942 type
= init_vector_type (builtin_type (gdbarch
)->builtin_true_char
,
4944 v
= allocate_value (type
);
4945 memcpy (value_contents_raw (v
), buf
, size
);
4950 return allocate_value (builtin_type (gdbarch
)->builtin_void
);
4953 #if !defined(HAVE_LIBEXPAT)
4955 struct traceframe_info
*
4956 parse_traceframe_info (const char *tframe_info
)
4958 static int have_warned
;
4963 warning (_("Can not parse XML trace frame info; XML support "
4964 "was disabled at compile time"));
4970 #else /* HAVE_LIBEXPAT */
4972 #include "xml-support.h"
4974 /* Handle the start of a <memory> element. */
4977 traceframe_info_start_memory (struct gdb_xml_parser
*parser
,
4978 const struct gdb_xml_element
*element
,
4979 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
4981 struct traceframe_info
*info
= user_data
;
4982 struct mem_range
*r
= VEC_safe_push (mem_range_s
, info
->memory
, NULL
);
4983 ULONGEST
*start_p
, *length_p
;
4985 start_p
= xml_find_attribute (attributes
, "start")->value
;
4986 length_p
= xml_find_attribute (attributes
, "length")->value
;
4988 r
->start
= *start_p
;
4989 r
->length
= *length_p
;
4992 /* Discard the constructed trace frame info (if an error occurs). */
4995 free_result (void *p
)
4997 struct traceframe_info
*result
= p
;
4999 free_traceframe_info (result
);
5002 /* The allowed elements and attributes for an XML memory map. */
5004 static const struct gdb_xml_attribute memory_attributes
[] = {
5005 { "start", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
5006 { "length", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
5007 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
5010 static const struct gdb_xml_element traceframe_info_children
[] = {
5011 { "memory", memory_attributes
, NULL
,
5012 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
5013 traceframe_info_start_memory
, NULL
},
5014 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
5017 static const struct gdb_xml_element traceframe_info_elements
[] = {
5018 { "traceframe-info", NULL
, traceframe_info_children
, GDB_XML_EF_NONE
,
5020 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
5023 /* Parse a traceframe-info XML document. */
5025 struct traceframe_info
*
5026 parse_traceframe_info (const char *tframe_info
)
5028 struct traceframe_info
*result
;
5029 struct cleanup
*back_to
;
5031 result
= XCNEW (struct traceframe_info
);
5032 back_to
= make_cleanup (free_result
, result
);
5034 if (gdb_xml_parse_quick (_("trace frame info"),
5035 "traceframe-info.dtd", traceframe_info_elements
,
5036 tframe_info
, result
) == 0)
5038 /* Parsed successfully, keep the result. */
5039 discard_cleanups (back_to
);
5044 do_cleanups (back_to
);
5048 #endif /* HAVE_LIBEXPAT */
5050 /* Returns the traceframe_info object for the current traceframe.
5051 This is where we avoid re-fetching the object from the target if we
5052 already have it cached. */
5054 struct traceframe_info
*
5055 get_traceframe_info (void)
5057 if (traceframe_info
== NULL
)
5058 traceframe_info
= target_traceframe_info ();
5060 return traceframe_info
;
5063 /* If the target supports the query, return in RESULT the set of
5064 collected memory in the current traceframe, found within the LEN
5065 bytes range starting at MEMADDR. Returns true if the target
5066 supports the query, otherwise returns false, and RESULT is left
5070 traceframe_available_memory (VEC(mem_range_s
) **result
,
5071 CORE_ADDR memaddr
, ULONGEST len
)
5073 struct traceframe_info
*info
= get_traceframe_info ();
5077 struct mem_range
*r
;
5082 for (i
= 0; VEC_iterate (mem_range_s
, info
->memory
, i
, r
); i
++)
5083 if (mem_ranges_overlap (r
->start
, r
->length
, memaddr
, len
))
5085 ULONGEST lo1
, hi1
, lo2
, hi2
;
5086 struct mem_range
*nr
;
5089 hi1
= memaddr
+ len
;
5092 hi2
= r
->start
+ r
->length
;
5094 nr
= VEC_safe_push (mem_range_s
, *result
, NULL
);
5096 nr
->start
= max (lo1
, lo2
);
5097 nr
->length
= min (hi1
, hi2
) - nr
->start
;
5100 normalize_mem_ranges (*result
);
5107 /* module initialization */
5109 _initialize_tracepoint (void)
5111 struct cmd_list_element
*c
;
5113 /* Explicitly create without lookup, since that tries to create a
5114 value with a void typed value, and when we get here, gdbarch
5115 isn't initialized yet. At this point, we're quite sure there
5116 isn't another convenience variable of the same name. */
5117 create_internalvar_type_lazy ("_sdata", sdata_make_value
);
5119 traceframe_number
= -1;
5120 tracepoint_number
= -1;
5122 if (tracepoint_list
.list
== NULL
)
5124 tracepoint_list
.listsize
= 128;
5125 tracepoint_list
.list
= xmalloc
5126 (tracepoint_list
.listsize
* sizeof (struct memrange
));
5128 if (tracepoint_list
.aexpr_list
== NULL
)
5130 tracepoint_list
.aexpr_listsize
= 128;
5131 tracepoint_list
.aexpr_list
= xmalloc
5132 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
5135 if (stepping_list
.list
== NULL
)
5137 stepping_list
.listsize
= 128;
5138 stepping_list
.list
= xmalloc
5139 (stepping_list
.listsize
* sizeof (struct memrange
));
5142 if (stepping_list
.aexpr_list
== NULL
)
5144 stepping_list
.aexpr_listsize
= 128;
5145 stepping_list
.aexpr_list
= xmalloc
5146 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
5149 add_info ("scope", scope_info
,
5150 _("List the variables local to a scope"));
5152 add_cmd ("tracepoints", class_trace
, NULL
,
5153 _("Tracing of program execution without stopping the program."),
5156 add_com ("tdump", class_trace
, trace_dump_command
,
5157 _("Print everything collected at the current tracepoint."));
5159 add_com ("tsave", class_trace
, trace_save_command
, _("\
5160 Save the trace data to a file.\n\
5161 Use the '-r' option to direct the target to save directly to the file,\n\
5162 using its own filesystem."));
5164 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
5165 Define a trace state variable.\n\
5166 Argument is a $-prefixed name, optionally followed\n\
5167 by '=' and an expression that sets the initial value\n\
5168 at the start of tracing."));
5169 set_cmd_completer (c
, expression_completer
);
5171 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
5172 Delete one or more trace state variables.\n\
5173 Arguments are the names of the variables to delete.\n\
5174 If no arguments are supplied, delete all variables."), &deletelist
);
5175 /* FIXME add a trace variable completer. */
5177 add_info ("tvariables", tvariables_info
, _("\
5178 Status of trace state variables and their values.\n\
5181 add_info ("static-tracepoint-markers",
5182 info_static_tracepoint_markers_command
, _("\
5183 List target static tracepoints markers.\n\
5186 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
5187 Select a trace frame;\n\
5188 No argument means forward by one frame; '-' means backward by one frame."),
5189 &tfindlist
, "tfind ", 1, &cmdlist
);
5191 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
5192 Select a trace frame whose PC is outside the given range (exclusive).\n\
5193 Usage: tfind outside addr1, addr2"),
5196 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
5197 Select a trace frame whose PC is in the given range (inclusive).\n\
5198 Usage: tfind range addr1,addr2"),
5201 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
5202 Select a trace frame by source line.\n\
5203 Argument can be a line number (with optional source file),\n\
5204 a function name, or '*' followed by an address.\n\
5205 Default argument is 'the next source line that was traced'."),
5208 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
5209 Select a trace frame by tracepoint number.\n\
5210 Default is the tracepoint for the current trace frame."),
5213 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
5214 Select a trace frame by PC.\n\
5215 Default is the current PC, or the PC of the current trace frame."),
5218 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
5219 Synonym for 'none'.\n\
5220 De-select any trace frame and resume 'live' debugging."),
5223 add_cmd ("none", class_trace
, trace_find_none_command
,
5224 _("De-select any trace frame and resume 'live' debugging."),
5227 add_cmd ("start", class_trace
, trace_find_start_command
,
5228 _("Select the first trace frame in the trace buffer."),
5231 add_com ("tstatus", class_trace
, trace_status_command
,
5232 _("Display the status of the current trace data collection."));
5234 add_com ("tstop", class_trace
, trace_stop_command
, _("\
5235 Stop trace data collection.\n\
5236 Usage: tstop [ <notes> ... ]\n\
5237 Any arguments supplied are recorded with the trace as a stop reason and\n\
5238 reported by tstatus (if the target supports trace notes)."));
5240 add_com ("tstart", class_trace
, trace_start_command
, _("\
5241 Start trace data collection.\n\
5242 Usage: tstart [ <notes> ... ]\n\
5243 Any arguments supplied are recorded with the trace as a note and\n\
5244 reported by tstatus (if the target supports trace notes)."));
5246 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
5247 Ends a list of commands or actions.\n\
5248 Several GDB commands allow you to enter a list of commands or actions.\n\
5249 Entering \"end\" on a line by itself is the normal way to terminate\n\
5251 Note: the \"end\" command cannot be used at the gdb prompt."));
5253 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
5254 Specify single-stepping behavior at a tracepoint.\n\
5255 Argument is number of instructions to trace in single-step mode\n\
5256 following the tracepoint. This command is normally followed by\n\
5257 one or more \"collect\" commands, to specify what to collect\n\
5258 while single-stepping.\n\n\
5259 Note: this command can only be used in a tracepoint \"actions\" list."));
5261 add_com_alias ("ws", "while-stepping", class_alias
, 0);
5262 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
5264 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
5265 Specify one or more data items to be collected at a tracepoint.\n\
5266 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
5267 collect all data (variables, registers) referenced by that expression.\n\
5268 Also accepts the following special arguments:\n\
5269 $regs -- all registers.\n\
5270 $args -- all function arguments.\n\
5271 $locals -- all variables local to the block/function scope.\n\
5272 $_sdata -- static tracepoint data (ignored for non-static tracepoints).\n\
5273 Note: this command can only be used in a tracepoint \"actions\" list."));
5275 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
5276 Specify one or more expressions to be evaluated at a tracepoint.\n\
5277 Accepts a comma-separated list of (one or more) expressions.\n\
5278 The result of each evaluation will be discarded.\n\
5279 Note: this command can only be used in a tracepoint \"actions\" list."));
5281 add_com ("actions", class_trace
, trace_actions_command
, _("\
5282 Specify the actions to be taken at a tracepoint.\n\
5283 Tracepoint actions may include collecting of specified data,\n\
5284 single-stepping, or enabling/disabling other tracepoints,\n\
5285 depending on target's capabilities."));
5287 default_collect
= xstrdup ("");
5288 add_setshow_string_cmd ("default-collect", class_trace
,
5289 &default_collect
, _("\
5290 Set the list of expressions to collect by default"), _("\
5291 Show the list of expressions to collect by default"), NULL
,
5293 &setlist
, &showlist
);
5295 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
5296 &disconnected_tracing
, _("\
5297 Set whether tracing continues after GDB disconnects."), _("\
5298 Show whether tracing continues after GDB disconnects."), _("\
5299 Use this to continue a tracing run even if GDB disconnects\n\
5300 or detaches from the target. You can reconnect later and look at\n\
5301 trace data collected in the meantime."),
5302 set_disconnected_tracing
,
5307 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
5308 &circular_trace_buffer
, _("\
5309 Set target's use of circular trace buffer."), _("\
5310 Show target's use of circular trace buffer."), _("\
5311 Use this to make the trace buffer into a circular buffer,\n\
5312 which will discard traceframes (oldest first) instead of filling\n\
5313 up and stopping the trace run."),
5314 set_circular_trace_buffer
,
5319 add_setshow_string_cmd ("trace-user", class_trace
,
5321 Set the user name to use for current and future trace runs"), _("\
5322 Show the user name to use for current and future trace runs"), NULL
,
5323 set_trace_user
, NULL
,
5324 &setlist
, &showlist
);
5326 add_setshow_string_cmd ("trace-notes", class_trace
,
5328 Set notes string to use for current and future trace runs"), _("\
5329 Show the notes string to use for current and future trace runs"), NULL
,
5330 set_trace_notes
, NULL
,
5331 &setlist
, &showlist
);
5333 add_setshow_string_cmd ("trace-stop-notes", class_trace
,
5334 &trace_stop_notes
, _("\
5335 Set notes string to use for future tstop commands"), _("\
5336 Show the notes string to use for future tstop commands"), NULL
,
5337 set_trace_stop_notes
, NULL
,
5338 &setlist
, &showlist
);
5342 add_target (&tfile_ops
);