1 /* Tracing functionality for remote targets in custom GDB protocol
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
4 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "arch-utils.h"
26 #include "expression.h"
31 #include "gdb_string.h"
33 #include "breakpoint.h"
34 #include "tracepoint.h"
37 #include "completer.h"
39 #include "dictionary.h"
41 #include "user-regs.h"
45 #include "filenames.h"
46 #include "gdbthread.h"
51 /* readline include files */
52 #include "readline/readline.h"
53 #include "readline/history.h"
55 /* readline defines this. */
66 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
67 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
69 extern void stop_tracing ();
71 /* Maximum length of an agent aexpression.
72 This accounts for the fact that packets are limited to 400 bytes
73 (which includes everything -- including the checksum), and assumes
74 the worst case of maximum length for each of the pieces of a
77 NOTE: expressions get mem2hex'ed otherwise this would be twice as
78 large. (400 - 31)/2 == 184 */
79 #define MAX_AGENT_EXPR_LEN 184
81 /* A hook used to notify the UI of tracepoint operations. */
83 void (*deprecated_trace_find_hook
) (char *arg
, int from_tty
);
84 void (*deprecated_trace_start_stop_hook
) (int start
, int from_tty
);
86 extern void (*deprecated_readline_begin_hook
) (char *, ...);
87 extern char *(*deprecated_readline_hook
) (char *);
88 extern void (*deprecated_readline_end_hook
) (void);
90 /* GDB commands implemented in other modules:
93 extern void output_command (char *, int);
98 This module defines the following debugger commands:
99 trace : set a tracepoint on a function, line, or address.
100 info trace : list all debugger-defined tracepoints.
101 delete trace : delete one or more tracepoints.
102 enable trace : enable one or more tracepoints.
103 disable trace : disable one or more tracepoints.
104 actions : specify actions to be taken at a tracepoint.
105 passcount : specify a pass count for a tracepoint.
106 tstart : start a trace experiment.
107 tstop : stop a trace experiment.
108 tstatus : query the status of a trace experiment.
109 tfind : find a trace frame in the trace buffer.
110 tdump : print everything collected at the current tracepoint.
111 save-tracepoints : write tracepoint setup into a file.
113 This module defines the following user-visible debugger variables:
114 $trace_frame : sequence number of trace frame currently being debugged.
115 $trace_line : source line of trace frame currently being debugged.
116 $trace_file : source file of trace frame currently being debugged.
117 $tracepoint : tracepoint number of trace frame currently being debugged.
121 /* ======= Important global variables: ======= */
123 /* The list of all trace state variables. We don't retain pointers to
124 any of these for any reason - API is by name or number only - so it
125 works to have a vector of objects. */
127 typedef struct trace_state_variable tsv_s
;
130 static VEC(tsv_s
) *tvariables
;
132 /* The next integer to assign to a variable. */
134 static int next_tsv_number
= 1;
136 /* Number of last traceframe collected. */
137 static int traceframe_number
;
139 /* Tracepoint for last traceframe collected. */
140 static int tracepoint_number
;
142 /* Symbol for function for last traceframe collected */
143 static struct symbol
*traceframe_fun
;
145 /* Symtab and line for last traceframe collected */
146 static struct symtab_and_line traceframe_sal
;
148 /* Tracing command lists */
149 static struct cmd_list_element
*tfindlist
;
151 /* List of expressions to collect by default at each tracepoint hit. */
152 char *default_collect
= "";
154 static int disconnected_tracing
;
156 /* This variable controls whether we ask the target for a linear or
157 circular trace buffer. */
159 static int circular_trace_buffer
;
161 /* ======= Important command functions: ======= */
162 static void trace_actions_command (char *, int);
163 static void trace_start_command (char *, int);
164 static void trace_stop_command (char *, int);
165 static void trace_status_command (char *, int);
166 static void trace_find_command (char *, int);
167 static void trace_find_pc_command (char *, int);
168 static void trace_find_tracepoint_command (char *, int);
169 static void trace_find_line_command (char *, int);
170 static void trace_find_range_command (char *, int);
171 static void trace_find_outside_command (char *, int);
172 static void trace_dump_command (char *, int);
174 /* support routines */
176 struct collection_list
;
177 static void add_aexpr (struct collection_list
*, struct agent_expr
*);
178 static char *mem2hex (gdb_byte
*, char *, int);
179 static void add_register (struct collection_list
*collection
,
182 extern void send_disconnected_tracing_value (int value
);
184 static void free_uploaded_tps (struct uploaded_tp
**utpp
);
185 static void free_uploaded_tsvs (struct uploaded_tsv
**utsvp
);
188 extern void _initialize_tracepoint (void);
190 static struct trace_status trace_status
;
192 char *stop_reason_names
[] = {
202 struct trace_status
*
203 current_trace_status ()
205 return &trace_status
;
208 /* Set traceframe number to NUM. */
210 set_traceframe_num (int num
)
212 traceframe_number
= num
;
213 set_internalvar_integer (lookup_internalvar ("trace_frame"), num
);
216 /* Set tracepoint number to NUM. */
218 set_tracepoint_num (int num
)
220 tracepoint_number
= num
;
221 set_internalvar_integer (lookup_internalvar ("tracepoint"), num
);
224 /* Set externally visible debug variables for querying/printing
225 the traceframe context (line, function, file) */
228 set_traceframe_context (struct frame_info
*trace_frame
)
232 if (trace_frame
== NULL
) /* Cease debugging any trace buffers. */
235 traceframe_sal
.pc
= traceframe_sal
.line
= 0;
236 traceframe_sal
.symtab
= NULL
;
237 clear_internalvar (lookup_internalvar ("trace_func"));
238 clear_internalvar (lookup_internalvar ("trace_file"));
239 set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
243 /* Save as globals for internal use. */
244 trace_pc
= get_frame_pc (trace_frame
);
245 traceframe_sal
= find_pc_line (trace_pc
, 0);
246 traceframe_fun
= find_pc_function (trace_pc
);
248 /* Save linenumber as "$trace_line", a debugger variable visible to
250 set_internalvar_integer (lookup_internalvar ("trace_line"),
251 traceframe_sal
.line
);
253 /* Save func name as "$trace_func", a debugger variable visible to
255 if (traceframe_fun
== NULL
256 || SYMBOL_LINKAGE_NAME (traceframe_fun
) == NULL
)
257 clear_internalvar (lookup_internalvar ("trace_func"));
259 set_internalvar_string (lookup_internalvar ("trace_func"),
260 SYMBOL_LINKAGE_NAME (traceframe_fun
));
262 /* Save file name as "$trace_file", a debugger variable visible to
264 if (traceframe_sal
.symtab
== NULL
265 || traceframe_sal
.symtab
->filename
== NULL
)
266 clear_internalvar (lookup_internalvar ("trace_file"));
268 set_internalvar_string (lookup_internalvar ("trace_file"),
269 traceframe_sal
.symtab
->filename
);
272 /* Create a new trace state variable with the given name. */
274 struct trace_state_variable
*
275 create_trace_state_variable (const char *name
)
277 struct trace_state_variable tsv
;
279 memset (&tsv
, 0, sizeof (tsv
));
280 tsv
.name
= xstrdup (name
);
281 tsv
.number
= next_tsv_number
++;
282 return VEC_safe_push (tsv_s
, tvariables
, &tsv
);
285 /* Look for a trace state variable of the given name. */
287 struct trace_state_variable
*
288 find_trace_state_variable (const char *name
)
290 struct trace_state_variable
*tsv
;
293 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
294 if (strcmp (name
, tsv
->name
) == 0)
301 delete_trace_state_variable (const char *name
)
303 struct trace_state_variable
*tsv
;
306 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
307 if (strcmp (name
, tsv
->name
) == 0)
309 xfree ((void *)tsv
->name
);
310 VEC_unordered_remove (tsv_s
, tvariables
, ix
);
314 warning (_("No trace variable named \"$%s\", not deleting"), name
);
317 /* The 'tvariable' command collects a name and optional expression to
318 evaluate into an initial value. */
321 trace_variable_command (char *args
, int from_tty
)
323 struct expression
*expr
;
324 struct cleanup
*old_chain
;
325 struct internalvar
*intvar
= NULL
;
327 struct trace_state_variable
*tsv
;
330 error_no_arg (_("trace state variable name"));
332 /* All the possible valid arguments are expressions. */
333 expr
= parse_expression (args
);
334 old_chain
= make_cleanup (free_current_contents
, &expr
);
336 if (expr
->nelts
== 0)
337 error (_("No expression?"));
339 /* Only allow two syntaxes; "$name" and "$name=value". */
340 if (expr
->elts
[0].opcode
== OP_INTERNALVAR
)
342 intvar
= expr
->elts
[1].internalvar
;
344 else if (expr
->elts
[0].opcode
== BINOP_ASSIGN
345 && expr
->elts
[1].opcode
== OP_INTERNALVAR
)
347 intvar
= expr
->elts
[2].internalvar
;
348 initval
= value_as_long (evaluate_subexpression_type (expr
, 4));
351 error (_("Syntax must be $NAME [ = EXPR ]"));
354 error (_("No name given"));
356 if (strlen (internalvar_name (intvar
)) <= 0)
357 error (_("Must supply a non-empty variable name"));
359 /* If the variable already exists, just change its initial value. */
360 tsv
= find_trace_state_variable (internalvar_name (intvar
));
363 tsv
->initial_value
= initval
;
364 printf_filtered (_("Trace state variable $%s now has initial value %s.\n"),
365 tsv
->name
, plongest (tsv
->initial_value
));
369 /* Create a new variable. */
370 tsv
= create_trace_state_variable (internalvar_name (intvar
));
371 tsv
->initial_value
= initval
;
373 printf_filtered (_("Trace state variable $%s created, with initial value %s.\n"),
374 tsv
->name
, plongest (tsv
->initial_value
));
376 do_cleanups (old_chain
);
380 delete_trace_variable_command (char *args
, int from_tty
)
384 struct cleanup
*back_to
;
385 struct trace_state_variable
*tsv
;
389 if (query (_("Delete all trace state variables? ")))
390 VEC_free (tsv_s
, tvariables
);
395 argv
= gdb_buildargv (args
);
396 back_to
= make_cleanup_freeargv (argv
);
398 for (i
= 0; argv
[i
] != NULL
; i
++)
401 delete_trace_state_variable (argv
[i
] + 1);
403 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv
[i
]);
406 do_cleanups (back_to
);
412 tvariables_info_1 (void)
414 struct trace_state_variable
*tsv
;
417 struct cleanup
*back_to
;
419 if (VEC_length (tsv_s
, tvariables
) == 0 && !ui_out_is_mi_like_p (uiout
))
421 printf_filtered (_("No trace state variables.\n"));
425 /* Try to acquire values from the target. */
426 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
, ++count
)
427 tsv
->value_known
= target_get_trace_state_variable_value (tsv
->number
,
430 back_to
= make_cleanup_ui_out_table_begin_end (uiout
, 3,
431 count
, "trace-variables");
432 ui_out_table_header (uiout
, 15, ui_left
, "name", "Name");
433 ui_out_table_header (uiout
, 11, ui_left
, "initial", "Initial");
434 ui_out_table_header (uiout
, 11, ui_left
, "current", "Current");
436 ui_out_table_body (uiout
);
438 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
440 struct cleanup
*back_to2
;
444 back_to2
= make_cleanup_ui_out_tuple_begin_end (uiout
, "variable");
446 name
= concat ("$", tsv
->name
, NULL
);
447 make_cleanup (xfree
, name
);
448 ui_out_field_string (uiout
, "name", name
);
449 ui_out_field_string (uiout
, "initial", plongest (tsv
->initial_value
));
451 if (tsv
->value_known
)
452 c
= plongest (tsv
->value
);
453 else if (ui_out_is_mi_like_p (uiout
))
454 /* For MI, we prefer not to use magic string constants, but rather
455 omit the field completely. The difference between unknown and
456 undefined does not seem important enough to represent. */
458 else if (current_trace_status ()->running
|| traceframe_number
>= 0)
459 /* The value is/was defined, but we don't have it. */
462 /* It is not meaningful to ask about the value. */
465 ui_out_field_string (uiout
, "current", c
);
466 ui_out_text (uiout
, "\n");
468 do_cleanups (back_to2
);
471 do_cleanups (back_to
);
474 /* List all the trace state variables. */
477 tvariables_info (char *args
, int from_tty
)
479 tvariables_info_1 ();
482 /* ACTIONS functions: */
484 /* The three functions:
485 collect_pseudocommand,
486 while_stepping_pseudocommand, and
487 end_actions_pseudocommand
488 are placeholders for "commands" that are actually ONLY to be used
489 within a tracepoint action list. If the actual function is ever called,
490 it means that somebody issued the "command" at the top level,
491 which is always an error. */
494 end_actions_pseudocommand (char *args
, int from_tty
)
496 error (_("This command cannot be used at the top level."));
500 while_stepping_pseudocommand (char *args
, int from_tty
)
502 error (_("This command can only be used in a tracepoint actions list."));
506 collect_pseudocommand (char *args
, int from_tty
)
508 error (_("This command can only be used in a tracepoint actions list."));
512 teval_pseudocommand (char *args
, int from_tty
)
514 error (_("This command can only be used in a tracepoint actions list."));
517 /* Enter a list of actions for a tracepoint. */
519 trace_actions_command (char *args
, int from_tty
)
521 struct breakpoint
*t
;
522 struct command_line
*l
;
524 t
= get_tracepoint_by_number (&args
, 0, 1);
528 xstrprintf ("Enter actions for tracepoint %d, one per line.",
530 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
532 l
= read_command_lines (tmpbuf
, from_tty
, 1, check_tracepoint_command
, t
);
533 do_cleanups (cleanups
);
534 breakpoint_set_commands (t
, l
);
536 /* else just return */
539 /* worker function */
541 validate_actionline (char **line
, struct breakpoint
*t
)
543 struct cmd_list_element
*c
;
544 struct expression
*exp
= NULL
;
545 struct cleanup
*old_chain
= NULL
;
547 struct bp_location
*loc
;
549 /* if EOF is typed, *line is NULL */
553 for (p
= *line
; isspace ((int) *p
);)
556 /* Symbol lookup etc. */
557 if (*p
== '\0') /* empty line: just prompt for another line. */
560 if (*p
== '#') /* comment line */
563 c
= lookup_cmd (&p
, cmdlist
, "", -1, 1);
566 warning (_("'%s' is not an action that I know, or is ambiguous."),
571 if (cmd_cfunc_eq (c
, collect_pseudocommand
))
573 struct agent_expr
*aexpr
;
574 struct agent_reqs areqs
;
577 { /* repeat over a comma-separated list */
578 QUIT
; /* allow user to bail out with ^C */
579 while (isspace ((int) *p
))
582 if (*p
== '$') /* look for special pseudo-symbols */
584 if ((0 == strncasecmp ("reg", p
+ 1, 3)) ||
585 (0 == strncasecmp ("arg", p
+ 1, 3)) ||
586 (0 == strncasecmp ("loc", p
+ 1, 3)))
591 /* else fall thru, treat p as an expression and parse it! */
594 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
597 exp
= parse_exp_1 (&p
, block_for_pc (loc
->address
), 1);
598 old_chain
= make_cleanup (free_current_contents
, &exp
);
600 if (exp
->elts
[0].opcode
== OP_VAR_VALUE
)
602 if (SYMBOL_CLASS (exp
->elts
[2].symbol
) == LOC_CONST
)
604 warning (_("constant %s (value %ld) will not be collected."),
605 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
),
606 SYMBOL_VALUE (exp
->elts
[2].symbol
));
609 else if (SYMBOL_CLASS (exp
->elts
[2].symbol
) == LOC_OPTIMIZED_OUT
)
611 warning (_("%s is optimized away and cannot be collected."),
612 SYMBOL_PRINT_NAME (exp
->elts
[2].symbol
));
617 /* We have something to collect, make sure that the expr to
618 bytecode translator can handle it and that it's not too
620 aexpr
= gen_trace_for_expr (loc
->address
, exp
);
621 make_cleanup_free_agent_expr (aexpr
);
623 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
624 error (_("expression too complicated, try simplifying"));
626 ax_reqs (aexpr
, &areqs
);
627 (void) make_cleanup (xfree
, areqs
.reg_mask
);
629 if (areqs
.flaw
!= agent_flaw_none
)
630 error (_("malformed expression"));
632 if (areqs
.min_height
< 0)
633 error (_("gdb: Internal error: expression has min height < 0"));
635 if (areqs
.max_height
> 20)
636 error (_("expression too complicated, try simplifying"));
638 do_cleanups (old_chain
);
641 while (p
&& *p
++ == ',');
644 else if (cmd_cfunc_eq (c
, teval_pseudocommand
))
646 struct agent_expr
*aexpr
;
649 { /* repeat over a comma-separated list */
650 QUIT
; /* allow user to bail out with ^C */
651 while (isspace ((int) *p
))
655 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
658 /* Only expressions are allowed for this action. */
659 exp
= parse_exp_1 (&p
, block_for_pc (loc
->address
), 1);
660 old_chain
= make_cleanup (free_current_contents
, &exp
);
662 /* We have something to evaluate, make sure that the expr to
663 bytecode translator can handle it and that it's not too
665 aexpr
= gen_eval_for_expr (loc
->address
, exp
);
666 make_cleanup_free_agent_expr (aexpr
);
668 if (aexpr
->len
> MAX_AGENT_EXPR_LEN
)
669 error (_("expression too complicated, try simplifying"));
671 do_cleanups (old_chain
);
674 while (p
&& *p
++ == ',');
677 else if (cmd_cfunc_eq (c
, while_stepping_pseudocommand
))
679 char *steparg
; /* in case warning is necessary */
681 while (isspace ((int) *p
))
686 (t
->step_count
= strtol (p
, &p
, 0)) == 0)
688 error (_("'%s': bad step-count."), *line
);
692 else if (cmd_cfunc_eq (c
, end_actions_pseudocommand
))
696 error (_("'%s' is not a supported tracepoint action."), *line
);
701 memrange_absolute
= -1
706 int type
; /* memrange_absolute for absolute memory range,
707 else basereg number */
708 bfd_signed_vma start
;
712 struct collection_list
714 unsigned char regs_mask
[32]; /* room for up to 256 regs */
717 struct memrange
*list
;
718 long aexpr_listsize
; /* size of array pointed to by expr_list elt */
720 struct agent_expr
**aexpr_list
;
723 tracepoint_list
, stepping_list
;
725 /* MEMRANGE functions: */
727 static int memrange_cmp (const void *, const void *);
729 /* compare memranges for qsort */
731 memrange_cmp (const void *va
, const void *vb
)
733 const struct memrange
*a
= va
, *b
= vb
;
735 if (a
->type
< b
->type
)
737 if (a
->type
> b
->type
)
739 if (a
->type
== memrange_absolute
)
741 if ((bfd_vma
) a
->start
< (bfd_vma
) b
->start
)
743 if ((bfd_vma
) a
->start
> (bfd_vma
) b
->start
)
748 if (a
->start
< b
->start
)
750 if (a
->start
> b
->start
)
756 /* Sort the memrange list using qsort, and merge adjacent memranges. */
758 memrange_sortmerge (struct collection_list
*memranges
)
762 qsort (memranges
->list
, memranges
->next_memrange
,
763 sizeof (struct memrange
), memrange_cmp
);
764 if (memranges
->next_memrange
> 0)
766 for (a
= 0, b
= 1; b
< memranges
->next_memrange
; b
++)
768 if (memranges
->list
[a
].type
== memranges
->list
[b
].type
&&
769 memranges
->list
[b
].start
- memranges
->list
[a
].end
<=
772 /* memrange b starts before memrange a ends; merge them. */
773 if (memranges
->list
[b
].end
> memranges
->list
[a
].end
)
774 memranges
->list
[a
].end
= memranges
->list
[b
].end
;
775 continue; /* next b, same a */
779 memcpy (&memranges
->list
[a
], &memranges
->list
[b
],
780 sizeof (struct memrange
));
782 memranges
->next_memrange
= a
+ 1;
786 /* Add a register to a collection list. */
788 add_register (struct collection_list
*collection
, unsigned int regno
)
791 printf_filtered ("collect register %d\n", regno
);
792 if (regno
>= (8 * sizeof (collection
->regs_mask
)))
793 error (_("Internal: register number %d too large for tracepoint"),
795 collection
->regs_mask
[regno
/ 8] |= 1 << (regno
% 8);
798 /* Add a memrange to a collection list */
800 add_memrange (struct collection_list
*memranges
,
801 int type
, bfd_signed_vma base
,
806 printf_filtered ("(%d,", type
);
808 printf_filtered (",%ld)\n", len
);
811 /* type: memrange_absolute == memory, other n == basereg */
812 memranges
->list
[memranges
->next_memrange
].type
= type
;
813 /* base: addr if memory, offset if reg relative. */
814 memranges
->list
[memranges
->next_memrange
].start
= base
;
815 /* len: we actually save end (base + len) for convenience */
816 memranges
->list
[memranges
->next_memrange
].end
= base
+ len
;
817 memranges
->next_memrange
++;
818 if (memranges
->next_memrange
>= memranges
->listsize
)
820 memranges
->listsize
*= 2;
821 memranges
->list
= xrealloc (memranges
->list
,
822 memranges
->listsize
);
825 if (type
!= memrange_absolute
) /* Better collect the base register! */
826 add_register (memranges
, type
);
829 /* Add a symbol to a collection list. */
831 collect_symbol (struct collection_list
*collect
,
833 struct gdbarch
*gdbarch
,
834 long frame_regno
, long frame_offset
,
839 bfd_signed_vma offset
;
840 int treat_as_expr
= 0;
842 len
= TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
)));
843 switch (SYMBOL_CLASS (sym
))
846 printf_filtered ("%s: don't know symbol class %d\n",
847 SYMBOL_PRINT_NAME (sym
),
851 printf_filtered ("constant %s (value %ld) will not be collected.\n",
852 SYMBOL_PRINT_NAME (sym
), SYMBOL_VALUE (sym
));
855 offset
= SYMBOL_VALUE_ADDRESS (sym
);
860 sprintf_vma (tmp
, offset
);
861 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
862 SYMBOL_PRINT_NAME (sym
), len
,
865 /* A struct may be a C++ class with static fields, go to general
866 expression handling. */
867 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_STRUCT
)
870 add_memrange (collect
, memrange_absolute
, offset
, len
);
873 reg
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
875 printf_filtered ("LOC_REG[parm] %s: ",
876 SYMBOL_PRINT_NAME (sym
));
877 add_register (collect
, reg
);
878 /* Check for doubles stored in two registers. */
879 /* FIXME: how about larger types stored in 3 or more regs? */
880 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_FLT
&&
881 len
> register_size (gdbarch
, reg
))
882 add_register (collect
, reg
+ 1);
885 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
886 printf_filtered (" (will not collect %s)\n",
887 SYMBOL_PRINT_NAME (sym
));
891 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
894 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
895 SYMBOL_PRINT_NAME (sym
), len
);
897 printf_filtered (" from frame ptr reg %d\n", reg
);
899 add_memrange (collect
, reg
, offset
, len
);
901 case LOC_REGPARM_ADDR
:
902 reg
= SYMBOL_VALUE (sym
);
906 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
907 SYMBOL_PRINT_NAME (sym
), len
);
909 printf_filtered (" from reg %d\n", reg
);
911 add_memrange (collect
, reg
, offset
, len
);
915 offset
= frame_offset
+ SYMBOL_VALUE (sym
);
918 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
919 SYMBOL_PRINT_NAME (sym
), len
);
921 printf_filtered (" from frame ptr reg %d\n", reg
);
923 add_memrange (collect
, reg
, offset
, len
);
930 case LOC_OPTIMIZED_OUT
:
931 printf_filtered ("%s has been optimized out of existence.\n",
932 SYMBOL_PRINT_NAME (sym
));
940 /* Expressions are the most general case. */
943 struct agent_expr
*aexpr
;
944 struct cleanup
*old_chain1
= NULL
;
945 struct agent_reqs areqs
;
947 aexpr
= gen_trace_for_var (scope
, gdbarch
, sym
);
949 /* It can happen that the symbol is recorded as a computed
950 location, but it's been optimized away and doesn't actually
951 have a location expression. */
954 printf_filtered ("%s has been optimized out of existence.\n",
955 SYMBOL_PRINT_NAME (sym
));
959 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
961 ax_reqs (aexpr
, &areqs
);
962 if (areqs
.flaw
!= agent_flaw_none
)
963 error (_("malformed expression"));
965 if (areqs
.min_height
< 0)
966 error (_("gdb: Internal error: expression has min height < 0"));
967 if (areqs
.max_height
> 20)
968 error (_("expression too complicated, try simplifying"));
970 discard_cleanups (old_chain1
);
971 add_aexpr (collect
, aexpr
);
973 /* take care of the registers */
974 if (areqs
.reg_mask_len
> 0)
978 for (ndx1
= 0; ndx1
< areqs
.reg_mask_len
; ndx1
++)
980 QUIT
; /* allow user to bail out with ^C */
981 if (areqs
.reg_mask
[ndx1
] != 0)
983 /* assume chars have 8 bits */
984 for (ndx2
= 0; ndx2
< 8; ndx2
++)
985 if (areqs
.reg_mask
[ndx1
] & (1 << ndx2
))
986 /* it's used -- record it */
987 add_register (collect
, ndx1
* 8 + ndx2
);
994 /* Add all locals (or args) symbols to collection list */
996 add_local_symbols (struct collection_list
*collect
,
997 struct gdbarch
*gdbarch
, CORE_ADDR pc
,
998 long frame_regno
, long frame_offset
, int type
)
1001 struct block
*block
;
1002 struct dict_iterator iter
;
1005 block
= block_for_pc (pc
);
1008 QUIT
; /* allow user to bail out with ^C */
1009 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
1011 if (SYMBOL_IS_ARGUMENT (sym
)
1012 ? type
== 'A' /* collecting Arguments */
1013 : type
== 'L') /* collecting Locals */
1016 collect_symbol (collect
, sym
, gdbarch
,
1017 frame_regno
, frame_offset
, pc
);
1020 if (BLOCK_FUNCTION (block
))
1023 block
= BLOCK_SUPERBLOCK (block
);
1026 warning (_("No %s found in scope."),
1027 type
== 'L' ? "locals" : "args");
1030 /* worker function */
1032 clear_collection_list (struct collection_list
*list
)
1036 list
->next_memrange
= 0;
1037 for (ndx
= 0; ndx
< list
->next_aexpr_elt
; ndx
++)
1039 free_agent_expr (list
->aexpr_list
[ndx
]);
1040 list
->aexpr_list
[ndx
] = NULL
;
1042 list
->next_aexpr_elt
= 0;
1043 memset (list
->regs_mask
, 0, sizeof (list
->regs_mask
));
1046 /* reduce a collection list to string form (for gdb protocol) */
1048 stringify_collection_list (struct collection_list
*list
, char *string
)
1050 char temp_buf
[2048];
1054 char *(*str_list
)[];
1058 count
= 1 + list
->next_memrange
+ list
->next_aexpr_elt
+ 1;
1059 str_list
= (char *(*)[]) xmalloc (count
* sizeof (char *));
1061 for (i
= sizeof (list
->regs_mask
) - 1; i
> 0; i
--)
1062 if (list
->regs_mask
[i
] != 0) /* skip leading zeroes in regs_mask */
1064 if (list
->regs_mask
[i
] != 0) /* prepare to send regs_mask to the stub */
1067 printf_filtered ("\nCollecting registers (mask): 0x");
1072 QUIT
; /* allow user to bail out with ^C */
1074 printf_filtered ("%02X", list
->regs_mask
[i
]);
1075 sprintf (end
, "%02X", list
->regs_mask
[i
]);
1078 (*str_list
)[ndx
] = xstrdup (temp_buf
);
1082 printf_filtered ("\n");
1083 if (list
->next_memrange
> 0 && info_verbose
)
1084 printf_filtered ("Collecting memranges: \n");
1085 for (i
= 0, count
= 0, end
= temp_buf
; i
< list
->next_memrange
; i
++)
1087 QUIT
; /* allow user to bail out with ^C */
1088 sprintf_vma (tmp2
, list
->list
[i
].start
);
1091 printf_filtered ("(%d, %s, %ld)\n",
1094 (long) (list
->list
[i
].end
- list
->list
[i
].start
));
1096 if (count
+ 27 > MAX_AGENT_EXPR_LEN
)
1098 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1105 bfd_signed_vma length
= list
->list
[i
].end
- list
->list
[i
].start
;
1107 /* The "%X" conversion specifier expects an unsigned argument,
1108 so passing -1 (memrange_absolute) to it directly gives you
1109 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1111 if (list
->list
[i
].type
== memrange_absolute
)
1112 sprintf (end
, "M-1,%s,%lX", tmp2
, (long) length
);
1114 sprintf (end
, "M%X,%s,%lX", list
->list
[i
].type
, tmp2
, (long) length
);
1117 count
+= strlen (end
);
1118 end
= temp_buf
+ count
;
1121 for (i
= 0; i
< list
->next_aexpr_elt
; i
++)
1123 QUIT
; /* allow user to bail out with ^C */
1124 if ((count
+ 10 + 2 * list
->aexpr_list
[i
]->len
) > MAX_AGENT_EXPR_LEN
)
1126 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1131 sprintf (end
, "X%08X,", list
->aexpr_list
[i
]->len
);
1132 end
+= 10; /* 'X' + 8 hex digits + ',' */
1135 end
= mem2hex (list
->aexpr_list
[i
]->buf
,
1136 end
, list
->aexpr_list
[i
]->len
);
1137 count
+= 2 * list
->aexpr_list
[i
]->len
;
1142 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1147 (*str_list
)[ndx
] = NULL
;
1160 encode_actions_1 (struct command_line
*action
,
1161 struct breakpoint
*t
,
1162 struct bp_location
*tloc
,
1164 LONGEST frame_offset
,
1165 struct collection_list
*collect
,
1166 struct collection_list
*stepping_list
)
1169 struct expression
*exp
= NULL
;
1170 struct command_line
*actions
;
1172 struct value
*tempval
;
1173 struct cmd_list_element
*cmd
;
1174 struct agent_expr
*aexpr
;
1176 for (; action
; action
= action
->next
)
1178 QUIT
; /* allow user to bail out with ^C */
1179 action_exp
= action
->line
;
1180 while (isspace ((int) *action_exp
))
1183 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
1185 error (_("Bad action list item: %s"), action_exp
);
1187 if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
1190 { /* repeat over a comma-separated list */
1191 QUIT
; /* allow user to bail out with ^C */
1192 while (isspace ((int) *action_exp
))
1195 if (0 == strncasecmp ("$reg", action_exp
, 4))
1197 for (i
= 0; i
< gdbarch_num_regs (t
->gdbarch
); i
++)
1198 add_register (collect
, i
);
1199 action_exp
= strchr (action_exp
, ','); /* more? */
1201 else if (0 == strncasecmp ("$arg", action_exp
, 4))
1203 add_local_symbols (collect
,
1209 action_exp
= strchr (action_exp
, ','); /* more? */
1211 else if (0 == strncasecmp ("$loc", action_exp
, 4))
1213 add_local_symbols (collect
,
1219 action_exp
= strchr (action_exp
, ','); /* more? */
1223 unsigned long addr
, len
;
1224 struct cleanup
*old_chain
= NULL
;
1225 struct cleanup
*old_chain1
= NULL
;
1226 struct agent_reqs areqs
;
1228 exp
= parse_exp_1 (&action_exp
,
1229 block_for_pc (tloc
->address
), 1);
1230 old_chain
= make_cleanup (free_current_contents
, &exp
);
1232 switch (exp
->elts
[0].opcode
)
1236 const char *name
= &exp
->elts
[2].string
;
1238 i
= user_reg_map_name_to_regnum (t
->gdbarch
,
1239 name
, strlen (name
));
1241 internal_error (__FILE__
, __LINE__
,
1242 _("Register $%s not available"),
1245 printf_filtered ("OP_REGISTER: ");
1246 add_register (collect
, i
);
1251 /* safe because we know it's a simple expression */
1252 tempval
= evaluate_expression (exp
);
1253 addr
= value_address (tempval
);
1254 len
= TYPE_LENGTH (check_typedef (exp
->elts
[1].type
));
1255 add_memrange (collect
, memrange_absolute
, addr
, len
);
1259 collect_symbol (collect
,
1260 exp
->elts
[2].symbol
,
1267 default: /* full-fledged expression */
1268 aexpr
= gen_trace_for_expr (tloc
->address
, exp
);
1270 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1272 ax_reqs (aexpr
, &areqs
);
1273 if (areqs
.flaw
!= agent_flaw_none
)
1274 error (_("malformed expression"));
1276 if (areqs
.min_height
< 0)
1277 error (_("gdb: Internal error: expression has min height < 0"));
1278 if (areqs
.max_height
> 20)
1279 error (_("expression too complicated, try simplifying"));
1281 discard_cleanups (old_chain1
);
1282 add_aexpr (collect
, aexpr
);
1284 /* take care of the registers */
1285 if (areqs
.reg_mask_len
> 0)
1290 for (ndx1
= 0; ndx1
< areqs
.reg_mask_len
; ndx1
++)
1292 QUIT
; /* allow user to bail out with ^C */
1293 if (areqs
.reg_mask
[ndx1
] != 0)
1295 /* assume chars have 8 bits */
1296 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1297 if (areqs
.reg_mask
[ndx1
] & (1 << ndx2
))
1298 /* it's used -- record it */
1299 add_register (collect
,
1306 do_cleanups (old_chain
);
1309 while (action_exp
&& *action_exp
++ == ',');
1311 else if (cmd_cfunc_eq (cmd
, teval_pseudocommand
))
1314 { /* repeat over a comma-separated list */
1315 QUIT
; /* allow user to bail out with ^C */
1316 while (isspace ((int) *action_exp
))
1320 unsigned long addr
, len
;
1321 struct cleanup
*old_chain
= NULL
;
1322 struct cleanup
*old_chain1
= NULL
;
1323 struct agent_reqs areqs
;
1325 exp
= parse_exp_1 (&action_exp
,
1326 block_for_pc (tloc
->address
), 1);
1327 old_chain
= make_cleanup (free_current_contents
, &exp
);
1329 aexpr
= gen_eval_for_expr (tloc
->address
, exp
);
1330 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1332 ax_reqs (aexpr
, &areqs
);
1333 if (areqs
.flaw
!= agent_flaw_none
)
1334 error (_("malformed expression"));
1336 if (areqs
.min_height
< 0)
1337 error (_("gdb: Internal error: expression has min height < 0"));
1338 if (areqs
.max_height
> 20)
1339 error (_("expression too complicated, try simplifying"));
1341 discard_cleanups (old_chain1
);
1342 /* Even though we're not officially collecting, add
1343 to the collect list anyway. */
1344 add_aexpr (collect
, aexpr
);
1346 do_cleanups (old_chain
);
1349 while (action_exp
&& *action_exp
++ == ',');
1351 else if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
1353 /* We check against nested while-stepping when setting
1354 breakpoint action, so no way to run into nested
1356 gdb_assert (stepping_list
);
1358 encode_actions_1 (action
->body_list
[0], t
, tloc
, frame_reg
, frame_offset
,
1359 stepping_list
, NULL
);
1362 error (_("Invalid tracepoint command '%s'"), action
->line
);
1366 /* Render all actions into gdb protocol. */
1368 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
1369 char ***tdp_actions
, char ***stepping_actions
)
1371 static char tdp_buff
[2048], step_buff
[2048];
1372 char *default_collect_line
= NULL
;
1373 struct command_line
*actions
;
1374 struct command_line
*default_collect_action
= NULL
;
1376 LONGEST frame_offset
;
1377 struct cleanup
*back_to
;
1379 back_to
= make_cleanup (null_cleanup
, NULL
);
1381 clear_collection_list (&tracepoint_list
);
1382 clear_collection_list (&stepping_list
);
1384 *tdp_actions
= NULL
;
1385 *stepping_actions
= NULL
;
1387 gdbarch_virtual_frame_pointer (t
->gdbarch
,
1388 t
->loc
->address
, &frame_reg
, &frame_offset
);
1390 actions
= t
->commands
->commands
;
1392 /* If there are default expressions to collect, make up a collect
1393 action and prepend to the action list to encode. Note that since
1394 validation is per-tracepoint (local var "xyz" might be valid for
1395 one tracepoint and not another, etc), we make up the action on
1396 the fly, and don't cache it. */
1397 if (*default_collect
)
1400 enum actionline_type linetype
;
1402 default_collect_line
= xstrprintf ("collect %s", default_collect
);
1403 make_cleanup (xfree
, default_collect_line
);
1405 line
= default_collect_line
;
1406 linetype
= validate_actionline (&line
, t
);
1407 if (linetype
!= BADLINE
)
1409 default_collect_action
= xmalloc (sizeof (struct command_line
));
1410 make_cleanup (xfree
, default_collect_action
);
1411 default_collect_action
->next
= t
->commands
->commands
;
1412 default_collect_action
->line
= line
;
1413 actions
= default_collect_action
;
1416 encode_actions_1 (actions
, t
, tloc
, frame_reg
, frame_offset
,
1417 &tracepoint_list
, &stepping_list
);
1419 memrange_sortmerge (&tracepoint_list
);
1420 memrange_sortmerge (&stepping_list
);
1422 *tdp_actions
= stringify_collection_list (&tracepoint_list
,
1424 *stepping_actions
= stringify_collection_list (&stepping_list
,
1427 do_cleanups (back_to
);
1431 add_aexpr (struct collection_list
*collect
, struct agent_expr
*aexpr
)
1433 if (collect
->next_aexpr_elt
>= collect
->aexpr_listsize
)
1435 collect
->aexpr_list
=
1436 xrealloc (collect
->aexpr_list
,
1437 2 * collect
->aexpr_listsize
* sizeof (struct agent_expr
*));
1438 collect
->aexpr_listsize
*= 2;
1440 collect
->aexpr_list
[collect
->next_aexpr_elt
] = aexpr
;
1441 collect
->next_aexpr_elt
++;
1446 start_tracing (void)
1449 VEC(breakpoint_p
) *tp_vec
= NULL
;
1451 struct breakpoint
*t
;
1452 struct trace_state_variable
*tsv
;
1453 int any_enabled
= 0;
1455 tp_vec
= all_tracepoints ();
1457 /* No point in tracing without any tracepoints... */
1458 if (VEC_length (breakpoint_p
, tp_vec
) == 0)
1460 VEC_free (breakpoint_p
, tp_vec
);
1461 error (_("No tracepoints defined, not starting trace"));
1464 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
1466 if (t
->enable_state
== bp_enabled
)
1473 /* No point in tracing with only disabled tracepoints. */
1476 VEC_free (breakpoint_p
, tp_vec
);
1477 error (_("No tracepoints enabled, not starting trace"));
1480 target_trace_init ();
1482 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
1484 t
->number_on_target
= 0;
1485 target_download_tracepoint (t
);
1486 t
->number_on_target
= t
->number
;
1488 VEC_free (breakpoint_p
, tp_vec
);
1490 /* Send down all the trace state variables too. */
1491 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
1493 target_download_trace_state_variable (tsv
);
1496 /* Tell target to treat text-like sections as transparent. */
1497 target_trace_set_readonly_regions ();
1498 /* Set some mode flags. */
1499 target_set_disconnected_tracing (disconnected_tracing
);
1500 target_set_circular_trace_buffer (circular_trace_buffer
);
1502 /* Now insert traps and begin collecting data. */
1503 target_trace_start ();
1505 /* Reset our local state. */
1506 set_traceframe_num (-1);
1507 set_tracepoint_num (-1);
1508 set_traceframe_context (NULL
);
1509 current_trace_status()->running
= 1;
1514 Tell target to clear any previous trace experiment.
1515 Walk the list of tracepoints, and send them (and their actions)
1516 to the target. If no errors,
1517 Tell target to start a new trace experiment. */
1520 trace_start_command (char *args
, int from_tty
)
1522 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1529 trace_stop_command (char *args
, int from_tty
)
1537 target_trace_stop ();
1538 /* should change in response to reply? */
1539 current_trace_status ()->running
= 0;
1542 /* tstatus command */
1544 trace_status_command (char *args
, int from_tty
)
1546 struct trace_status
*ts
= current_trace_status ();
1549 status
= target_get_trace_status (ts
);
1554 printf_filtered (_("Using a trace file.\n"));
1557 printf_filtered (_("Trace can not be run on this target.\n"));
1562 if (!ts
->running_known
)
1564 printf_filtered (_("Run/stop status is unknown.\n"));
1566 else if (ts
->running
)
1568 printf_filtered (_("Trace is running on the target.\n"));
1569 if (disconnected_tracing
)
1570 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1572 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1576 switch (ts
->stop_reason
)
1578 case trace_never_run
:
1579 printf_filtered (_("No trace has been run on the target.\n"));
1582 printf_filtered (_("Trace stopped by a tstop command.\n"));
1584 case trace_buffer_full
:
1585 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1587 case trace_disconnected
:
1588 printf_filtered (_("Trace stopped because of disconnection.\n"));
1590 case tracepoint_passcount
:
1591 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1592 ts
->stopping_tracepoint
);
1594 case tracepoint_error
:
1595 if (ts
->stopping_tracepoint
)
1596 printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
1597 ts
->error_desc
, ts
->stopping_tracepoint
);
1599 printf_filtered (_("Trace stopped by an error (%s).\n"),
1602 case trace_stop_reason_unknown
:
1603 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1606 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1612 if (ts
->traceframes_created
>= 0
1613 && ts
->traceframe_count
!= ts
->traceframes_created
)
1615 printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
1616 ts
->traceframe_count
, ts
->traceframes_created
);
1618 else if (ts
->traceframe_count
>= 0)
1620 printf_filtered (_("Collected %d trace frames.\n"),
1621 ts
->traceframe_count
);
1624 if (ts
->buffer_free
>= 0)
1626 if (ts
->buffer_size
>= 0)
1628 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1629 ts
->buffer_free
, ts
->buffer_size
);
1630 if (ts
->buffer_size
> 0)
1631 printf_filtered (_(" (%d%% full)"),
1632 ((int) ((((long long) (ts
->buffer_size
1633 - ts
->buffer_free
)) * 100)
1634 / ts
->buffer_size
)));
1635 printf_filtered (_(".\n"));
1638 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1642 /* Now report on what we're doing with tfind. */
1643 if (traceframe_number
>= 0)
1644 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1645 traceframe_number
, tracepoint_number
);
1647 printf_filtered (_("Not looking at any trace frame.\n"));
1650 /* Report the trace status to uiout, in a way suitable for MI, and not
1651 suitable for CLI. If ON_STOP is true, suppress a few fields that
1652 are not meaningful in the -trace-stop response.
1654 The implementation is essentially parallel to trace_status_command, but
1655 merging them will result in unreadable code. */
1657 trace_status_mi (int on_stop
)
1659 struct trace_status
*ts
= current_trace_status ();
1661 char *string_status
;
1663 status
= target_get_trace_status (ts
);
1665 if (status
== -1 && !ts
->from_file
)
1667 ui_out_field_string (uiout
, "supported", "0");
1672 ui_out_field_string (uiout
, "supported", "file");
1674 ui_out_field_string (uiout
, "supported", "1");
1676 gdb_assert (ts
->running_known
);
1680 ui_out_field_string (uiout
, "running", "1");
1682 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
1683 Given that the frontend gets the status either on -trace-stop, or from
1684 -trace-status after re-connection, it does not seem like this
1685 information is necessary for anything. It is not necessary for either
1686 figuring the vital state of the target nor for navigation of trace
1687 frames. If the frontend wants to show the current state is some
1688 configure dialog, it can request the value when such dialog is
1689 invoked by the user. */
1693 char *stop_reason
= NULL
;
1694 int stopping_tracepoint
= -1;
1697 ui_out_field_string (uiout
, "running", "0");
1699 if (ts
->stop_reason
!= trace_stop_reason_unknown
)
1701 switch (ts
->stop_reason
)
1704 stop_reason
= "request";
1706 case trace_buffer_full
:
1707 stop_reason
= "overflow";
1709 case trace_disconnected
:
1710 stop_reason
= "disconnection";
1712 case tracepoint_passcount
:
1713 stop_reason
= "passcount";
1714 stopping_tracepoint
= ts
->stopping_tracepoint
;
1716 case tracepoint_error
:
1717 stop_reason
= "error";
1718 stopping_tracepoint
= ts
->stopping_tracepoint
;
1724 ui_out_field_string (uiout
, "stop-reason", stop_reason
);
1725 if (stopping_tracepoint
!= -1)
1726 ui_out_field_int (uiout
, "stopping-tracepoint",
1727 stopping_tracepoint
);
1728 if (ts
->stop_reason
== tracepoint_error
)
1729 ui_out_field_string (uiout
, "error-description",
1736 if ((int) ts
->traceframe_count
!= -1)
1737 ui_out_field_int (uiout
, "frames", ts
->traceframe_count
);
1738 if ((int) ts
->buffer_size
!= -1)
1739 ui_out_field_int (uiout
, "buffer-size", (int) ts
->buffer_size
);
1740 if ((int) ts
->buffer_free
!= -1)
1741 ui_out_field_int (uiout
, "buffer-free", (int) ts
->buffer_free
);
1746 disconnect_or_stop_tracing (int from_tty
)
1748 /* It can happen that the target that was tracing went away on its
1749 own, and we didn't notice. Get a status update, and if the
1750 current target doesn't even do tracing, then assume it's not
1752 if (target_get_trace_status (current_trace_status ()) < 0)
1753 current_trace_status ()->running
= 0;
1755 if (current_trace_status ()->running
&& from_tty
)
1757 int cont
= query (_("Trace is running. Continue tracing after detach? "));
1758 /* Note that we send the query result without affecting the
1759 user's setting of disconnected_tracing, so that the answer is
1761 send_disconnected_tracing_value (cont
);
1763 /* Also ensure that we do the equivalent of a tstop command if
1764 tracing is not to continue after the detach. */
1769 /* Also we want to be out of tfind mode, otherwise things can get
1770 confusing upon reconnection. Just use these calls instead of
1771 full tfind_1 behavior because we're in the middle of detaching,
1772 and there's no point to updating current stack frame etc. */
1773 set_traceframe_number (-1);
1774 set_traceframe_context (NULL
);
1777 /* Worker function for the various flavors of the tfind command. */
1779 tfind_1 (enum trace_find_type type
, int num
,
1780 ULONGEST addr1
, ULONGEST addr2
,
1783 int target_frameno
= -1, target_tracept
= -1;
1784 struct frame_id old_frame_id
;
1786 struct breakpoint
*tp
;
1788 old_frame_id
= get_frame_id (get_current_frame ());
1790 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
1793 if (type
== tfind_number
1795 && target_frameno
== -1)
1797 /* We told the target to get out of tfind mode, and it did. */
1799 else if (target_frameno
== -1)
1801 /* A request for a non-existant trace frame has failed.
1802 Our response will be different, depending on FROM_TTY:
1804 If FROM_TTY is true, meaning that this command was
1805 typed interactively by the user, then give an error
1806 and DO NOT change the state of traceframe_number etc.
1808 However if FROM_TTY is false, meaning that we're either
1809 in a script, a loop, or a user-defined command, then
1810 DON'T give an error, but DO change the state of
1811 traceframe_number etc. to invalid.
1813 The rationalle is that if you typed the command, you
1814 might just have committed a typo or something, and you'd
1815 like to NOT lose your current debugging state. However
1816 if you're in a user-defined command or especially in a
1817 loop, then you need a way to detect that the command
1818 failed WITHOUT aborting. This allows you to write
1819 scripts that search thru the trace buffer until the end,
1820 and then continue on to do something else. */
1823 error (_("Target failed to find requested trace frame."));
1827 printf_filtered ("End of trace buffer.\n");
1828 #if 0 /* dubious now? */
1829 /* The following will not recurse, since it's
1831 trace_find_command ("-1", from_tty
);
1836 tp
= get_tracepoint_by_number_on_target (target_tracept
);
1838 reinit_frame_cache ();
1839 registers_changed ();
1840 target_dcache_invalidate ();
1841 set_traceframe_num (target_frameno
);
1842 set_tracepoint_num (tp
? tp
->number
: target_tracept
);
1843 if (target_frameno
== -1)
1844 set_traceframe_context (NULL
);
1846 set_traceframe_context (get_current_frame ());
1848 if (traceframe_number
>= 0)
1850 /* Use different branches for MI and CLI to make CLI messages
1852 if (ui_out_is_mi_like_p (uiout
))
1854 ui_out_field_string (uiout
, "found", "1");
1855 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
1856 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
1860 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1861 traceframe_number
, tracepoint_number
);
1866 if (ui_out_is_mi_like_p (uiout
))
1867 ui_out_field_string (uiout
, "found", "0");
1869 printf_unfiltered (_("No trace frame found"));
1872 /* If we're in nonstop mode and getting out of looking at trace
1873 frames, there won't be any current frame to go back to and
1876 && (has_stack_frames () || traceframe_number
>= 0))
1878 enum print_what print_what
;
1880 /* NOTE: in immitation of the step command, try to determine
1881 whether we have made a transition from one function to
1882 another. If so, we'll print the "stack frame" (ie. the new
1883 function and it's arguments) -- otherwise we'll just show the
1886 if (frame_id_eq (old_frame_id
,
1887 get_frame_id (get_current_frame ())))
1888 print_what
= SRC_LINE
;
1890 print_what
= SRC_AND_LOC
;
1892 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
1897 /* trace_find_command takes a trace frame number n,
1898 sends "QTFrame:<n>" to the target,
1899 and accepts a reply that may contain several optional pieces
1900 of information: a frame number, a tracepoint number, and an
1901 indication of whether this is a trap frame or a stepping frame.
1903 The minimal response is just "OK" (which indicates that the
1904 target does not give us a frame number or a tracepoint number).
1905 Instead of that, the target may send us a string containing
1907 F<hexnum> (gives the selected frame number)
1908 T<hexnum> (gives the selected tracepoint number)
1913 trace_find_command (char *args
, int from_tty
)
1914 { /* this should only be called with a numeric argument */
1917 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1918 error ("May not look at trace frames while trace is running.");
1920 if (args
== 0 || *args
== 0)
1921 { /* TFIND with no args means find NEXT trace frame. */
1922 if (traceframe_number
== -1)
1923 frameno
= 0; /* "next" is first one */
1925 frameno
= traceframe_number
+ 1;
1927 else if (0 == strcmp (args
, "-"))
1929 if (traceframe_number
== -1)
1930 error (_("not debugging trace buffer"));
1931 else if (from_tty
&& traceframe_number
== 0)
1932 error (_("already at start of trace buffer"));
1934 frameno
= traceframe_number
- 1;
1936 /* A hack to work around eval's need for fp to have been collected. */
1937 else if (0 == strcmp (args
, "-1"))
1940 frameno
= parse_and_eval_long (args
);
1943 error (_("invalid input (%d is less than zero)"), frameno
);
1945 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
1950 trace_find_end_command (char *args
, int from_tty
)
1952 trace_find_command ("-1", from_tty
);
1957 trace_find_none_command (char *args
, int from_tty
)
1959 trace_find_command ("-1", from_tty
);
1964 trace_find_start_command (char *args
, int from_tty
)
1966 trace_find_command ("0", from_tty
);
1969 /* tfind pc command */
1971 trace_find_pc_command (char *args
, int from_tty
)
1976 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1977 error ("May not look at trace frames while trace is running.");
1979 if (args
== 0 || *args
== 0)
1980 pc
= regcache_read_pc (get_current_regcache ());
1982 pc
= parse_and_eval_address (args
);
1984 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
1987 /* tfind tracepoint command */
1989 trace_find_tracepoint_command (char *args
, int from_tty
)
1992 struct breakpoint
*tp
;
1994 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1995 error ("May not look at trace frames while trace is running.");
1997 if (args
== 0 || *args
== 0)
1999 if (tracepoint_number
== -1)
2000 error (_("No current tracepoint -- please supply an argument."));
2002 tdp
= tracepoint_number
; /* default is current TDP */
2005 tdp
= parse_and_eval_long (args
);
2007 /* If we have the tracepoint on hand, use the number that the
2008 target knows about (which may be different if we disconnected
2009 and reconnected). */
2010 tp
= get_tracepoint (tdp
);
2012 tdp
= tp
->number_on_target
;
2014 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
2017 /* TFIND LINE command:
2019 This command will take a sourceline for argument, just like BREAK
2020 or TRACE (ie. anything that "decode_line_1" can handle).
2022 With no argument, this command will find the next trace frame
2023 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2026 trace_find_line_command (char *args
, int from_tty
)
2028 static CORE_ADDR start_pc
, end_pc
;
2029 struct symtabs_and_lines sals
;
2030 struct symtab_and_line sal
;
2031 struct cleanup
*old_chain
;
2032 char startpc_str
[40], endpc_str
[40];
2034 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2035 error ("May not look at trace frames while trace is running.");
2037 if (args
== 0 || *args
== 0)
2039 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2041 sals
.sals
= (struct symtab_and_line
*)
2042 xmalloc (sizeof (struct symtab_and_line
));
2047 sals
= decode_line_spec (args
, 1);
2051 old_chain
= make_cleanup (xfree
, sals
.sals
);
2052 if (sal
.symtab
== 0)
2054 printf_filtered ("TFIND: No line number information available");
2057 /* This is useful for "info line *0x7f34". If we can't
2058 tell the user about a source line, at least let them
2059 have the symbolic address. */
2060 printf_filtered (" for address ");
2062 print_address (get_current_arch (), sal
.pc
, gdb_stdout
);
2063 printf_filtered (";\n -- will attempt to find by PC. \n");
2067 printf_filtered (".\n");
2068 return; /* No line, no PC; what can we do? */
2071 else if (sal
.line
> 0
2072 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2074 if (start_pc
== end_pc
)
2076 printf_filtered ("Line %d of \"%s\"",
2077 sal
.line
, sal
.symtab
->filename
);
2079 printf_filtered (" is at address ");
2080 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2082 printf_filtered (" but contains no code.\n");
2083 sal
= find_pc_line (start_pc
, 0);
2085 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2086 && start_pc
!= end_pc
)
2087 printf_filtered ("Attempting to find line %d instead.\n",
2090 error (_("Cannot find a good line."));
2094 /* Is there any case in which we get here, and have an address
2095 which the user would want to see? If we have debugging
2096 symbols and no line numbers? */
2097 error (_("Line number %d is out of range for \"%s\"."),
2098 sal
.line
, sal
.symtab
->filename
);
2100 /* Find within range of stated line. */
2102 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2104 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2105 do_cleanups (old_chain
);
2108 /* tfind range command */
2110 trace_find_range_command (char *args
, int from_tty
)
2112 static CORE_ADDR start
, stop
;
2113 char start_str
[40], stop_str
[40];
2116 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2117 error ("May not look at trace frames while trace is running.");
2119 if (args
== 0 || *args
== 0)
2120 { /* XXX FIXME: what should default behavior be? */
2121 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2125 if (0 != (tmp
= strchr (args
, ',')))
2127 *tmp
++ = '\0'; /* terminate start address */
2128 while (isspace ((int) *tmp
))
2130 start
= parse_and_eval_address (args
);
2131 stop
= parse_and_eval_address (tmp
);
2134 { /* no explicit end address? */
2135 start
= parse_and_eval_address (args
);
2136 stop
= start
+ 1; /* ??? */
2139 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2142 /* tfind outside command */
2144 trace_find_outside_command (char *args
, int from_tty
)
2146 CORE_ADDR start
, stop
;
2147 char start_str
[40], stop_str
[40];
2150 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2151 error ("May not look at trace frames while trace is running.");
2153 if (args
== 0 || *args
== 0)
2154 { /* XXX FIXME: what should default behavior be? */
2155 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2159 if (0 != (tmp
= strchr (args
, ',')))
2161 *tmp
++ = '\0'; /* terminate start address */
2162 while (isspace ((int) *tmp
))
2164 start
= parse_and_eval_address (args
);
2165 stop
= parse_and_eval_address (tmp
);
2168 { /* no explicit end address? */
2169 start
= parse_and_eval_address (args
);
2170 stop
= start
+ 1; /* ??? */
2173 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2176 /* info scope command: list the locals for a scope. */
2178 scope_info (char *args
, int from_tty
)
2180 struct symtabs_and_lines sals
;
2182 struct minimal_symbol
*msym
;
2183 struct block
*block
;
2184 char **canonical
, *symname
, *save_args
= args
;
2185 struct dict_iterator iter
;
2187 struct gdbarch
*gdbarch
;
2190 if (args
== 0 || *args
== 0)
2191 error (_("requires an argument (function, line or *addr) to define a scope"));
2193 sals
= decode_line_1 (&args
, 1, NULL
, 0, &canonical
, NULL
);
2194 if (sals
.nelts
== 0)
2195 return; /* presumably decode_line_1 has already warned */
2197 /* Resolve line numbers to PC */
2198 resolve_sal_pc (&sals
.sals
[0]);
2199 block
= block_for_pc (sals
.sals
[0].pc
);
2203 QUIT
; /* allow user to bail out with ^C */
2204 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2206 QUIT
; /* allow user to bail out with ^C */
2208 printf_filtered ("Scope for %s:\n", save_args
);
2211 symname
= SYMBOL_PRINT_NAME (sym
);
2212 if (symname
== NULL
|| *symname
== '\0')
2213 continue; /* probably botched, certainly useless */
2215 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2217 printf_filtered ("Symbol %s is ", symname
);
2218 switch (SYMBOL_CLASS (sym
))
2221 case LOC_UNDEF
: /* messed up symbol? */
2222 printf_filtered ("a bogus symbol, class %d.\n",
2223 SYMBOL_CLASS (sym
));
2224 count
--; /* don't count this one */
2227 printf_filtered ("a constant with value %ld (0x%lx)",
2228 SYMBOL_VALUE (sym
), SYMBOL_VALUE (sym
));
2230 case LOC_CONST_BYTES
:
2231 printf_filtered ("constant bytes: ");
2232 if (SYMBOL_TYPE (sym
))
2233 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2234 fprintf_filtered (gdb_stdout
, " %02x",
2235 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2238 printf_filtered ("in static storage at address ");
2239 printf_filtered ("%s", paddress (gdbarch
,
2240 SYMBOL_VALUE_ADDRESS (sym
)));
2243 /* GDBARCH is the architecture associated with the objfile
2244 the symbol is defined in; the target architecture may be
2245 different, and may provide additional registers. However,
2246 we do not know the target architecture at this point.
2247 We assume the objfile architecture will contain all the
2248 standard registers that occur in debug info in that
2250 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2252 if (SYMBOL_IS_ARGUMENT (sym
))
2253 printf_filtered ("an argument in register $%s",
2254 gdbarch_register_name (gdbarch
, regno
));
2256 printf_filtered ("a local variable in register $%s",
2257 gdbarch_register_name (gdbarch
, regno
));
2260 printf_filtered ("an argument at stack/frame offset %ld",
2261 SYMBOL_VALUE (sym
));
2264 printf_filtered ("a local variable at frame offset %ld",
2265 SYMBOL_VALUE (sym
));
2268 printf_filtered ("a reference argument at offset %ld",
2269 SYMBOL_VALUE (sym
));
2271 case LOC_REGPARM_ADDR
:
2272 /* Note comment at LOC_REGISTER. */
2273 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2274 printf_filtered ("the address of an argument, in register $%s",
2275 gdbarch_register_name (gdbarch
, regno
));
2278 printf_filtered ("a typedef.\n");
2281 printf_filtered ("a label at address ");
2282 printf_filtered ("%s", paddress (gdbarch
,
2283 SYMBOL_VALUE_ADDRESS (sym
)));
2286 printf_filtered ("a function at address ");
2287 printf_filtered ("%s",
2288 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2290 case LOC_UNRESOLVED
:
2291 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2294 printf_filtered ("Unresolved Static");
2297 printf_filtered ("static storage at address ");
2298 printf_filtered ("%s",
2299 paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (msym
)));
2302 case LOC_OPTIMIZED_OUT
:
2303 printf_filtered ("optimized out.\n");
2306 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, gdb_stdout
);
2309 if (SYMBOL_TYPE (sym
))
2310 printf_filtered (", length %d.\n",
2311 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2313 if (BLOCK_FUNCTION (block
))
2316 block
= BLOCK_SUPERBLOCK (block
);
2319 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2323 /* worker function (cleanup) */
2325 replace_comma (void *data
)
2333 trace_dump_command (char *args
, int from_tty
)
2335 struct regcache
*regcache
;
2336 struct gdbarch
*gdbarch
;
2337 struct breakpoint
*t
;
2338 struct command_line
*action
;
2339 char *action_exp
, *next_comma
;
2340 struct cleanup
*old_cleanups
;
2341 int stepping_actions
= 0;
2342 int stepping_frame
= 0;
2343 struct bp_location
*loc
;
2345 if (tracepoint_number
== -1)
2347 warning (_("No current trace frame."));
2351 t
= get_tracepoint (tracepoint_number
);
2354 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2357 old_cleanups
= make_cleanup (null_cleanup
, NULL
);
2359 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2360 tracepoint_number
, traceframe_number
);
2362 /* The current frame is a trap frame if the frame PC is equal
2363 to the tracepoint PC. If not, then the current frame was
2364 collected during single-stepping. */
2366 regcache
= get_current_regcache ();
2367 gdbarch
= get_regcache_arch (regcache
);
2369 /* If the traceframe's address matches any of the tracepoint's
2370 locations, assume it is a direct hit rather than a while-stepping
2371 frame. (FIXME this is not reliable, should record each frame's
2374 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2375 if (loc
->address
== regcache_read_pc (regcache
))
2378 for (action
= t
->commands
->commands
; action
; action
= action
->next
)
2380 struct cmd_list_element
*cmd
;
2382 QUIT
; /* allow user to bail out with ^C */
2383 action_exp
= action
->line
;
2384 while (isspace ((int) *action_exp
))
2387 /* The collection actions to be done while stepping are
2388 bracketed by the commands "while-stepping" and "end". */
2390 if (*action_exp
== '#') /* comment line */
2393 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2395 error (_("Bad action list item: %s"), action_exp
);
2397 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2398 stepping_actions
= 1;
2399 else if (cmd_cfunc_eq (cmd
, end_actions_pseudocommand
))
2400 stepping_actions
= 0;
2401 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2403 /* Display the collected data.
2404 For the trap frame, display only what was collected at
2405 the trap. Likewise for stepping frames, display only
2406 what was collected while stepping. This means that the
2407 two boolean variables, STEPPING_FRAME and
2408 STEPPING_ACTIONS should be equal. */
2409 if (stepping_frame
== stepping_actions
)
2412 { /* repeat over a comma-separated list */
2413 QUIT
; /* allow user to bail out with ^C */
2414 if (*action_exp
== ',')
2416 while (isspace ((int) *action_exp
))
2419 next_comma
= strchr (action_exp
, ',');
2421 if (0 == strncasecmp (action_exp
, "$reg", 4))
2422 registers_info (NULL
, from_tty
);
2423 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2424 locals_info (NULL
, from_tty
);
2425 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2426 args_info (NULL
, from_tty
);
2431 make_cleanup (replace_comma
, next_comma
);
2434 printf_filtered ("%s = ", action_exp
);
2435 output_command (action_exp
, from_tty
);
2436 printf_filtered ("\n");
2440 action_exp
= next_comma
;
2442 while (action_exp
&& *action_exp
== ',');
2446 discard_cleanups (old_cleanups
);
2449 extern int trace_regblock_size
;
2451 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2452 non-zero, the save is performed on the target, otherwise GDB obtains all
2453 trace data and saves it locally. */
2456 trace_save (const char *filename
, int target_does_save
)
2458 struct cleanup
*cleanup
;
2460 struct trace_status
*ts
= current_trace_status ();
2463 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
2464 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
2467 ULONGEST offset
= 0;
2468 #define MAX_TRACE_UPLOAD 2000
2469 gdb_byte buf
[MAX_TRACE_UPLOAD
];
2472 /* If the target is to save the data to a file on its own, then just
2473 send the command and be done with it. */
2474 if (target_does_save
)
2476 err
= target_save_trace_data (filename
);
2478 error (_("Target failed to save trace data to '%s'."),
2483 /* Get the trace status first before opening the file, so if the
2484 target is losing, we can get out without touching files. */
2485 status
= target_get_trace_status (ts
);
2487 pathname
= tilde_expand (filename
);
2488 cleanup
= make_cleanup (xfree
, pathname
);
2490 fp
= fopen (pathname
, "w");
2492 error (_("Unable to open file '%s' for saving trace data (%s)"),
2493 filename
, safe_strerror (errno
));
2494 make_cleanup_fclose (fp
);
2496 /* Write a file header, with a high-bit-set char to indicate a
2497 binary file, plus a hint as what this file is, and a version
2498 number in case of future needs. */
2499 written
= fwrite ("\x7fTRACE0\n", 8, 1, fp
);
2501 perror_with_name (pathname
);
2503 /* Write descriptive info. */
2505 /* Write out the size of a register block. */
2506 fprintf (fp
, "R %x\n", trace_regblock_size
);
2508 /* Write out status of the tracing run (aka "tstatus" info). */
2509 fprintf (fp
, "status %c;%s",
2510 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
2511 if (ts
->stop_reason
== tracepoint_error
)
2513 char *buf
= (char *) alloca (strlen (ts
->error_desc
) * 2 + 1);
2514 bin2hex ((gdb_byte
*) ts
->error_desc
, buf
, 0);
2515 fprintf (fp
, ":%s", buf
);
2517 fprintf (fp
, ":%x", ts
->stopping_tracepoint
);
2518 if (ts
->traceframe_count
>= 0)
2519 fprintf (fp
, ";tframes:%x", ts
->traceframe_count
);
2520 if (ts
->traceframes_created
>= 0)
2521 fprintf (fp
, ";tcreated:%x", ts
->traceframes_created
);
2522 if (ts
->buffer_free
>= 0)
2523 fprintf (fp
, ";tfree:%x", ts
->buffer_free
);
2524 if (ts
->buffer_size
>= 0)
2525 fprintf (fp
, ";tsize:%x", ts
->buffer_size
);
2528 /* Note that we want to upload tracepoints and save those, rather
2529 than simply writing out the local ones, because the user may have
2530 changed tracepoints in GDB in preparation for a future tracing
2531 run, or maybe just mass-deleted all types of breakpoints as part
2532 of cleaning up. So as not to contaminate the session, leave the
2533 data in its uploaded form, don't make into real tracepoints. */
2535 /* Get trace state variables first, they may be checked when parsing
2536 uploaded commands. */
2538 target_upload_trace_state_variables (&uploaded_tsvs
);
2540 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2546 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
2547 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
2550 fprintf (fp
, "tsv %x:%s:%x:%s\n",
2551 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
2552 utsv
->builtin
, buf
);
2558 free_uploaded_tsvs (&uploaded_tsvs
);
2560 target_upload_tracepoints (&uploaded_tps
);
2562 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
2564 fprintf (fp
, "tp T%x:%s:%c:%x:%x",
2565 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2566 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
2567 if (utp
->type
== bp_fast_tracepoint
)
2568 fprintf (fp
, ":F%x", utp
->orig_size
);
2570 fprintf (fp
, ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
2573 for (a
= 0; a
< utp
->numactions
; ++a
)
2574 fprintf (fp
, "tp A%x:%s:%s\n",
2575 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2577 for (a
= 0; a
< utp
->num_step_actions
; ++a
)
2578 fprintf (fp
, "tp S%x:%s:%s\n",
2579 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2580 utp
->step_actions
[a
]);
2583 free_uploaded_tps (&uploaded_tps
);
2585 /* Mark the end of the definition section. */
2588 /* Get and write the trace data proper. We ask for big blocks, in
2589 the hopes of efficiency, but will take less if the target has
2590 packet size limitations or some such. */
2593 gotten
= target_get_raw_trace_data (buf
, offset
, MAX_TRACE_UPLOAD
);
2595 error (_("Failure to get requested trace buffer data"));
2596 /* No more data is forthcoming, we're done. */
2599 written
= fwrite (buf
, gotten
, 1, fp
);
2600 if (written
< gotten
)
2601 perror_with_name (pathname
);
2605 /* Mark the end of trace data. */
2606 written
= fwrite (&gotten
, 4, 1, fp
);
2608 perror_with_name (pathname
);
2610 do_cleanups (cleanup
);
2614 trace_save_command (char *args
, int from_tty
)
2616 int target_does_save
= 0;
2618 char *filename
= NULL
;
2619 struct cleanup
*back_to
;
2622 error_no_arg (_("file in which to save trace data"));
2624 argv
= gdb_buildargv (args
);
2625 back_to
= make_cleanup_freeargv (argv
);
2627 for (; *argv
; ++argv
)
2629 if (strcmp (*argv
, "-r") == 0)
2630 target_does_save
= 1;
2631 else if (**argv
== '-')
2632 error (_("unknown option `%s'"), *argv
);
2638 error_no_arg (_("file in which to save trace data"));
2640 trace_save (filename
, target_does_save
);
2643 printf_filtered (_("Trace data saved to file '%s'.\n"), args
);
2645 do_cleanups (back_to
);
2648 /* Tell the target what to do with an ongoing tracing run if GDB
2649 disconnects for some reason. */
2652 send_disconnected_tracing_value (int value
)
2654 target_set_disconnected_tracing (value
);
2658 set_disconnected_tracing (char *args
, int from_tty
,
2659 struct cmd_list_element
*c
)
2661 send_disconnected_tracing_value (disconnected_tracing
);
2665 set_circular_trace_buffer (char *args
, int from_tty
,
2666 struct cmd_list_element
*c
)
2668 target_set_circular_trace_buffer (circular_trace_buffer
);
2671 /* Convert the memory pointed to by mem into hex, placing result in buf.
2672 * Return a pointer to the last char put in buf (null)
2673 * "stolen" from sparc-stub.c
2676 static const char hexchars
[] = "0123456789abcdef";
2679 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
2687 *buf
++ = hexchars
[ch
>> 4];
2688 *buf
++ = hexchars
[ch
& 0xf];
2697 get_traceframe_number (void)
2699 return traceframe_number
;
2702 /* Make the traceframe NUM be the current trace frame. Does nothing
2703 if NUM is already current. */
2706 set_traceframe_number (int num
)
2710 if (traceframe_number
== num
)
2712 /* Nothing to do. */
2716 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
2719 warning (_("could not change traceframe"));
2721 traceframe_number
= newnum
;
2723 /* Changing the traceframe changes our view of registers and of the
2725 registers_changed ();
2728 /* A cleanup used when switching away and back from tfind mode. */
2730 struct current_traceframe_cleanup
2732 /* The traceframe we were inspecting. */
2733 int traceframe_number
;
2737 do_restore_current_traceframe_cleanup (void *arg
)
2739 struct current_traceframe_cleanup
*old
= arg
;
2741 set_traceframe_number (old
->traceframe_number
);
2745 restore_current_traceframe_cleanup_dtor (void *arg
)
2747 struct current_traceframe_cleanup
*old
= arg
;
2753 make_cleanup_restore_current_traceframe (void)
2755 struct current_traceframe_cleanup
*old
;
2757 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
2758 old
->traceframe_number
= traceframe_number
;
2760 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
2761 restore_current_traceframe_cleanup_dtor
);
2764 /* Given a number and address, return an uploaded tracepoint with that
2765 number, creating if necessary. */
2767 struct uploaded_tp
*
2768 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
2770 struct uploaded_tp
*utp
;
2772 for (utp
= *utpp
; utp
; utp
= utp
->next
)
2773 if (utp
->number
== num
&& utp
->addr
== addr
)
2775 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
2776 memset (utp
, 0, sizeof (struct uploaded_tp
));
2785 free_uploaded_tps (struct uploaded_tp
**utpp
)
2787 struct uploaded_tp
*next_one
;
2791 next_one
= (*utpp
)->next
;
2797 /* Given a number and address, return an uploaded tracepoint with that
2798 number, creating if necessary. */
2800 struct uploaded_tsv
*
2801 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
2803 struct uploaded_tsv
*utsv
;
2805 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
2806 if (utsv
->number
== num
)
2808 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
2809 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
2811 utsv
->next
= *utsvp
;
2817 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
2819 struct uploaded_tsv
*next_one
;
2823 next_one
= (*utsvp
)->next
;
2829 /* Look for an existing tracepoint that seems similar enough to the
2830 uploaded one. Enablement isn't compared, because the user can
2831 toggle that freely, and may have done so in anticipation of the
2835 find_matching_tracepoint (struct uploaded_tp
*utp
)
2837 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
2839 struct breakpoint
*t
;
2840 struct bp_location
*loc
;
2842 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2844 if (t
->type
== utp
->type
2845 && t
->step_count
== utp
->step
2846 && t
->pass_count
== utp
->pass
2847 /* FIXME also test conditionals and actions */
2850 /* Scan the locations for an address match. */
2851 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2853 if (loc
->address
== utp
->addr
)
2861 /* Given a list of tracepoints uploaded from a target, attempt to
2862 match them up with existing tracepoints, and create new ones if not
2866 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
2868 struct uploaded_tp
*utp
;
2869 struct breakpoint
*t
;
2871 /* Look for GDB tracepoints that match up with our uploaded versions. */
2872 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
2874 t
= find_matching_tracepoint (utp
);
2876 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
2877 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2880 t
= create_tracepoint_from_upload (utp
);
2882 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
2883 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2885 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
2886 utp
->number
, paddress (get_current_arch (), utp
->addr
));
2888 /* Whether found or created, record the number used by the
2889 target, to help with mapping target tracepoints back to their
2890 counterparts here. */
2892 t
->number_on_target
= utp
->number
;
2895 free_uploaded_tps (uploaded_tps
);
2898 /* Trace state variables don't have much to identify them beyond their
2899 name, so just use that to detect matches. */
2901 struct trace_state_variable
*
2902 find_matching_tsv (struct uploaded_tsv
*utsv
)
2907 return find_trace_state_variable (utsv
->name
);
2910 struct trace_state_variable
*
2911 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
2913 const char *namebase
;
2916 struct trace_state_variable
*tsv
;
2920 namebase
= utsv
->name
;
2921 sprintf (buf
, "%s", namebase
);
2926 sprintf (buf
, "%s_%d", namebase
, try_num
++);
2929 /* Fish for a name that is not in use. */
2930 /* (should check against all internal vars?) */
2931 while (find_trace_state_variable (buf
))
2932 sprintf (buf
, "%s_%d", namebase
, try_num
++);
2934 /* We have an available name, create the variable. */
2935 tsv
= create_trace_state_variable (xstrdup (buf
));
2936 tsv
->initial_value
= utsv
->initial_value
;
2937 tsv
->builtin
= utsv
->builtin
;
2942 /* Given a list of uploaded trace state variables, try to match them
2943 up with existing variables, or create additional ones. */
2946 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
2949 struct uploaded_tsv
*utsv
;
2950 struct trace_state_variable
*tsv
;
2953 /* Most likely some numbers will have to be reassigned as part of
2954 the merge, so clear them all in anticipation. */
2955 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2958 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2960 tsv
= find_matching_tsv (utsv
);
2962 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
2963 tsv
->name
, utsv
->number
);
2966 tsv
= create_tsv_from_upload (utsv
);
2967 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
2968 tsv
->name
, utsv
->number
);
2970 /* Give precedence to numberings that come from the target. */
2972 tsv
->number
= utsv
->number
;
2975 /* Renumber everything that didn't get a target-assigned number. */
2977 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2978 if (tsv
->number
> highest
)
2979 highest
= tsv
->number
;
2982 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2983 if (tsv
->number
== 0)
2984 tsv
->number
= highest
++;
2986 free_uploaded_tsvs (uploaded_tsvs
);
2989 /* target tfile command */
2991 struct target_ops tfile_ops
;
2993 /* Fill in tfile_ops with its defined operations and properties. */
2995 #define TRACE_HEADER_SIZE 8
2997 char *trace_filename
;
2999 off_t trace_frames_offset
;
3002 int trace_regblock_size
;
3004 static void tfile_interp_line (char *line
,
3005 struct uploaded_tp
**utpp
,
3006 struct uploaded_tsv
**utsvp
);
3009 tfile_open (char *filename
, int from_tty
)
3012 struct cleanup
*old_chain
;
3015 char header
[TRACE_HEADER_SIZE
];
3016 char linebuf
[1000]; /* should be max remote packet size or so */
3018 int bytes
, i
, gotten
;
3019 struct trace_status
*ts
;
3020 struct uploaded_tp
*uploaded_tps
= NULL
;
3021 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3023 target_preopen (from_tty
);
3025 error (_("No trace file specified."));
3027 filename
= tilde_expand (filename
);
3028 if (!IS_ABSOLUTE_PATH(filename
))
3030 temp
= concat (current_directory
, "/", filename
, (char *)NULL
);
3035 old_chain
= make_cleanup (xfree
, filename
);
3037 flags
= O_BINARY
| O_LARGEFILE
;
3039 scratch_chan
= open (filename
, flags
, 0);
3040 if (scratch_chan
< 0)
3041 perror_with_name (filename
);
3043 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3045 discard_cleanups (old_chain
); /* Don't free filename any more */
3046 unpush_target (&tfile_ops
);
3048 push_target (&tfile_ops
);
3050 trace_filename
= xstrdup (filename
);
3051 trace_fd
= scratch_chan
;
3054 /* Read the file header and test for validity. */
3055 gotten
= read (trace_fd
, &header
, TRACE_HEADER_SIZE
);
3057 perror_with_name (trace_filename
);
3058 else if (gotten
< TRACE_HEADER_SIZE
)
3059 error (_("Premature end of file while reading trace file"));
3061 bytes
+= TRACE_HEADER_SIZE
;
3062 if (!(header
[0] == 0x7f
3063 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
3064 error (_("File is not a valid trace file."));
3066 trace_regblock_size
= 0;
3067 ts
= current_trace_status ();
3068 /* We know we're working with a file. */
3070 /* Set defaults in case there is no status line. */
3071 ts
->running_known
= 0;
3072 ts
->stop_reason
= trace_stop_reason_unknown
;
3073 ts
->traceframe_count
= -1;
3074 ts
->buffer_free
= 0;
3076 /* Read through a section of newline-terminated lines that
3077 define things like tracepoints. */
3081 gotten
= read (trace_fd
, &byte
, 1);
3083 perror_with_name (trace_filename
);
3084 else if (gotten
< 1)
3085 error (_("Premature end of file while reading trace file"));
3090 /* Empty line marks end of the definition section. */
3095 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
3098 linebuf
[i
++] = byte
;
3100 error (_("Excessively long lines in trace file"));
3103 /* Add the file's tracepoints and variables into the current mix. */
3105 /* Get trace state variables first, they may be checked when parsing
3106 uploaded commands. */
3107 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3109 merge_uploaded_tracepoints (&uploaded_tps
);
3111 /* Record the starting offset of the binary trace data. */
3112 trace_frames_offset
= bytes
;
3114 /* If we don't have a blocksize, we can't interpret the
3116 if (trace_regblock_size
== 0)
3117 error (_("No register block size recorded in trace file"));
3118 if (ts
->traceframe_count
<= 0)
3120 warning ("No traceframes present in this file.");
3124 #define TFILE_PID (1)
3125 inferior_appeared (current_inferior (), TFILE_PID
);
3126 inferior_ptid
= pid_to_ptid (TFILE_PID
);
3127 add_thread_silent (inferior_ptid
);
3129 post_create_inferior (&tfile_ops
, from_tty
);
3132 /* FIXME this will get defined in MI patch submission */
3133 tfind_1 (tfind_number
, 0, 0, 0, 0);
3137 /* Interpret the given line from the definitions part of the trace
3141 tfile_interp_line (char *line
,
3142 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
3146 if (strncmp (p
, "R ", strlen ("R ")) == 0)
3149 trace_regblock_size
= strtol (p
, &p
, 16);
3151 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
3153 p
+= strlen ("status ");
3154 parse_trace_status (p
, current_trace_status ());
3156 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
3158 p
+= strlen ("tp ");
3159 parse_tracepoint_definition (p
, utpp
);
3161 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
3163 p
+= strlen ("tsv ");
3164 parse_tsv_definition (p
, utsvp
);
3167 warning ("Ignoring trace file definition \"%s\"", line
);
3170 /* Parse the part of trace status syntax that is shared between
3171 the remote protocol and the trace file reader. */
3173 extern char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
3176 parse_trace_status (char *line
, struct trace_status
*ts
)
3178 char *p
= line
, *p1
, *p2
, *p_temp
;
3181 ts
->running_known
= 1;
3182 ts
->running
= (*p
++ == '1');
3183 ts
->stop_reason
= trace_stop_reason_unknown
;
3184 xfree (ts
->error_desc
);
3185 ts
->error_desc
= NULL
;
3186 ts
->traceframe_count
= -1;
3187 ts
->traceframes_created
= -1;
3188 ts
->buffer_free
= -1;
3189 ts
->buffer_size
= -1;
3193 p1
= strchr (p
, ':');
3195 error (_("Malformed trace status, at %s\n\
3196 Status line: '%s'\n"), p
, line
);
3197 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
3199 p
= unpack_varlen_hex (++p1
, &val
);
3200 ts
->stop_reason
= trace_buffer_full
;
3202 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
3204 p
= unpack_varlen_hex (++p1
, &val
);
3205 ts
->stop_reason
= trace_never_run
;
3207 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
], p1
- p
) == 0)
3209 p
= unpack_varlen_hex (++p1
, &val
);
3210 ts
->stop_reason
= tracepoint_passcount
;
3211 ts
->stopping_tracepoint
= val
;
3213 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
3215 p
= unpack_varlen_hex (++p1
, &val
);
3216 ts
->stop_reason
= tstop_command
;
3218 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
3220 p2
= strchr (++p1
, ':');
3225 ts
->error_desc
= xmalloc ((p2
- p1
) / 2 + 1);
3226 end
= hex2bin (p1
, ts
->error_desc
, (p2
- p1
) / 2);
3227 ts
->error_desc
[end
] = '\0';
3230 ts
->error_desc
= xstrdup ("");
3232 p
= unpack_varlen_hex (++p2
, &val
);
3233 ts
->stopping_tracepoint
= val
;
3234 ts
->stop_reason
= tracepoint_error
;
3236 else if (strncmp (p
, "tframes", p1
- p
) == 0)
3238 p
= unpack_varlen_hex (++p1
, &val
);
3239 ts
->traceframe_count
= val
;
3241 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
3243 p
= unpack_varlen_hex (++p1
, &val
);
3244 ts
->traceframes_created
= val
;
3246 else if (strncmp (p
, "tfree", p1
- p
) == 0)
3248 p
= unpack_varlen_hex (++p1
, &val
);
3249 ts
->buffer_free
= val
;
3251 else if (strncmp (p
, "tsize", p1
- p
) == 0)
3253 p
= unpack_varlen_hex (++p1
, &val
);
3254 ts
->buffer_size
= val
;
3258 /* Silently skip unknown optional info. */
3259 p_temp
= strchr (p1
+ 1, ';');
3263 /* Must be at the end. */
3269 /* Given a line of text defining a tracepoint or tracepoint action, parse
3270 it into an "uploaded tracepoint". */
3273 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
3277 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
;
3281 struct uploaded_tp
*utp
= NULL
;
3284 /* Both tracepoint and action definitions start with the same number
3285 and address sequence. */
3287 p
= unpack_varlen_hex (p
, &num
);
3288 p
++; /* skip a colon */
3289 p
= unpack_varlen_hex (p
, &addr
);
3290 p
++; /* skip a colon */
3293 enabled
= (*p
++ == 'E');
3294 p
++; /* skip a colon */
3295 p
= unpack_varlen_hex (p
, &step
);
3296 p
++; /* skip a colon */
3297 p
= unpack_varlen_hex (p
, &pass
);
3298 type
= bp_tracepoint
;
3300 /* Thumb through optional fields. */
3303 p
++; /* skip a colon */
3306 type
= bp_fast_tracepoint
;
3308 p
= unpack_varlen_hex (p
, &orig_size
);
3313 p
= unpack_varlen_hex (p
, &xlen
);
3314 p
++; /* skip a comma */
3315 cond
= (char *) xmalloc (2 * xlen
+ 1);
3316 strncpy (cond
, p
, 2 * xlen
);
3317 cond
[2 * xlen
] = '\0';
3321 warning ("Unrecognized char '%c' in tracepoint definition, skipping rest", *p
);
3323 utp
= get_uploaded_tp (num
, addr
, utpp
);
3325 utp
->enabled
= enabled
;
3330 else if (piece
== 'A')
3332 utp
= get_uploaded_tp (num
, addr
, utpp
);
3333 utp
->actions
[utp
->numactions
++] = xstrdup (p
);
3335 else if (piece
== 'S')
3337 utp
= get_uploaded_tp (num
, addr
, utpp
);
3338 utp
->step_actions
[utp
->num_step_actions
++] = xstrdup (p
);
3342 error ("Invalid tracepoint piece");
3346 /* Convert a textual description of a trace state variable into an
3350 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
3353 ULONGEST num
, initval
, builtin
;
3355 struct uploaded_tsv
*utsv
= NULL
;
3357 buf
= alloca (strlen (line
));
3360 p
= unpack_varlen_hex (p
, &num
);
3361 p
++; /* skip a colon */
3362 p
= unpack_varlen_hex (p
, &initval
);
3363 p
++; /* skip a colon */
3364 p
= unpack_varlen_hex (p
, &builtin
);
3365 p
++; /* skip a colon */
3366 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3369 utsv
= get_uploaded_tsv (num
, utsvp
);
3370 utsv
->initial_value
= initval
;
3371 utsv
->builtin
= builtin
;
3372 utsv
->name
= xstrdup (buf
);
3375 /* Close the trace file and generally clean up. */
3378 tfile_close (int quitting
)
3385 pid
= ptid_get_pid (inferior_ptid
);
3386 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff */
3387 exit_inferior_silent (pid
);
3392 xfree (trace_filename
);
3396 tfile_files_info (struct target_ops
*t
)
3398 /* (it would be useful to mention the name of the file) */
3399 printf_filtered ("Looking at a trace file.\n");
3402 /* The trace status for a file is that tracing can never be run. */
3405 tfile_get_trace_status (struct trace_status
*ts
)
3407 /* Other bits of trace status were collected as part of opening the
3408 trace files, so nothing to do here. */
3413 /* Given the position of a traceframe in the file, figure out what
3414 address the frame was collected at. This would normally be the
3415 value of a collected PC register, but if not available, we
3419 tfile_get_traceframe_address (off_t tframe_offset
)
3423 struct breakpoint
*tp
;
3424 off_t saved_offset
= cur_offset
;
3427 /* FIXME dig pc out of collected registers */
3429 /* Fall back to using tracepoint address. */
3430 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
3431 gotten
= read (trace_fd
, &tpnum
, 2);
3433 perror_with_name (trace_filename
);
3434 else if (gotten
< 2)
3435 error (_("Premature end of file while reading trace file"));
3437 tp
= get_tracepoint_by_number_on_target (tpnum
);
3438 /* FIXME this is a poor heuristic if multiple locations */
3440 addr
= tp
->loc
->address
;
3442 /* Restore our seek position. */
3443 cur_offset
= saved_offset
;
3444 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3448 /* Given a type of search and some parameters, scan the collection of
3449 traceframes in the file looking for a match. When found, return
3450 both the traceframe and tracepoint number, otherwise -1 for
3454 tfile_trace_find (enum trace_find_type type
, int num
,
3455 ULONGEST addr1
, ULONGEST addr2
, int *tpp
)
3458 int tfnum
= 0, found
= 0, gotten
;
3460 struct breakpoint
*tp
;
3461 off_t offset
, tframe_offset
;
3464 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
3465 offset
= trace_frames_offset
;
3468 tframe_offset
= offset
;
3469 gotten
= read (trace_fd
, &tpnum
, 2);
3471 perror_with_name (trace_filename
);
3472 else if (gotten
< 2)
3473 error (_("Premature end of file while reading trace file"));
3477 gotten
= read (trace_fd
, &data_size
, 4);
3479 perror_with_name (trace_filename
);
3480 else if (gotten
< 4)
3481 error (_("Premature end of file while reading trace file"));
3490 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3491 if (tfaddr
== addr1
)
3495 tp
= get_tracepoint (num
);
3496 if (tp
&& tpnum
== tp
->number_on_target
)
3500 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3501 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
3505 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3506 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
3510 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
3516 cur_offset
= offset
;
3517 cur_data_size
= data_size
;
3520 /* Skip past the traceframe's data. */
3521 lseek (trace_fd
, data_size
, SEEK_CUR
);
3522 offset
+= data_size
;
3523 /* Update our own count of traceframes. */
3526 /* Did not find what we were looking for. */
3532 /* Look for a block of saved registers in the traceframe, and get the
3533 requested register from it. */
3536 tfile_fetch_registers (struct target_ops
*ops
,
3537 struct regcache
*regcache
, int regno
)
3539 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3541 int i
, pos
, offset
, regn
, regsize
, gotten
;
3542 unsigned short mlen
;
3545 /* An uninitialized reg size says we're not going to be
3546 successful at getting register blocks. */
3547 if (!trace_regblock_size
)
3550 regs
= alloca (trace_regblock_size
);
3552 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3554 while (pos
< cur_data_size
)
3556 gotten
= read (trace_fd
, &block_type
, 1);
3558 perror_with_name (trace_filename
);
3559 else if (gotten
< 1)
3560 error (_("Premature end of file while reading trace file"));
3566 gotten
= read (trace_fd
, regs
, trace_regblock_size
);
3568 perror_with_name (trace_filename
);
3569 else if (gotten
< trace_regblock_size
)
3570 error (_("Premature end of file while reading trace file"));
3572 /* Assume the block is laid out in GDB register number order,
3573 each register with the size that it has in GDB. */
3575 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3577 regsize
= register_size (gdbarch
, regn
);
3578 /* Make sure we stay within block bounds. */
3579 if (offset
+ regsize
>= trace_regblock_size
)
3581 if (!regcache_valid_p (regcache
, regn
))
3585 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
3588 else if (regno
== -1)
3590 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
3597 lseek (trace_fd
, 8, SEEK_CUR
);
3598 gotten
= read (trace_fd
, &mlen
, 2);
3600 perror_with_name (trace_filename
);
3601 else if (gotten
< 2)
3602 error (_("Premature end of file while reading trace file"));
3603 lseek (trace_fd
, mlen
, SEEK_CUR
);
3604 pos
+= (8 + 2 + mlen
);
3607 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3611 error ("Unknown block type '%c' (0x%x) in trace frame",
3612 block_type
, block_type
);
3619 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
3620 const char *annex
, gdb_byte
*readbuf
,
3621 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
3626 unsigned short mlen
;
3628 /* We're only doing regular memory for now. */
3629 if (object
!= TARGET_OBJECT_MEMORY
)
3632 if (readbuf
== NULL
)
3633 error ("tfile_xfer_partial: trace file is read-only");
3635 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3637 while (pos
< cur_data_size
)
3639 gotten
= read (trace_fd
, &block_type
, 1);
3641 perror_with_name (trace_filename
);
3642 else if (gotten
< 1)
3643 error (_("Premature end of file while reading trace file"));
3648 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3649 pos
+= trace_regblock_size
;
3652 gotten
= read (trace_fd
, &maddr
, 8);
3654 perror_with_name (trace_filename
);
3655 else if (gotten
< 8)
3656 error (_("Premature end of file while reading trace file"));
3658 gotten
= read (trace_fd
, &mlen
, 2);
3660 perror_with_name (trace_filename
);
3661 else if (gotten
< 2)
3662 error (_("Premature end of file while reading trace file"));
3663 if (maddr
<= offset
&& (offset
+ len
) <= (maddr
+ mlen
))
3665 gotten
= read (trace_fd
, readbuf
, mlen
);
3667 perror_with_name (trace_filename
);
3668 else if (gotten
< mlen
)
3669 error (_("Premature end of file qwhile reading trace file"));
3673 lseek (trace_fd
, mlen
, SEEK_CUR
);
3674 pos
+= (8 + 2 + mlen
);
3677 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3681 error ("Unknown block type '%c' (0x%x) in traceframe",
3682 block_type
, block_type
);
3686 /* Indicate failure to find the requested memory block. */
3690 /* Iterate through the blocks of a trace frame, looking for a 'V'
3691 block with a matching tsv number. */
3694 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
3697 int pos
, vnum
, gotten
;
3698 unsigned short mlen
;
3700 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3702 while (pos
< cur_data_size
)
3704 gotten
= read (trace_fd
, &block_type
, 1);
3706 perror_with_name (trace_filename
);
3707 else if (gotten
< 1)
3708 error (_("Premature end of file while reading trace file"));
3713 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3714 pos
+= trace_regblock_size
;
3717 lseek (trace_fd
, 8, SEEK_CUR
);
3718 gotten
= read (trace_fd
, &mlen
, 2);
3720 perror_with_name (trace_filename
);
3721 else if (gotten
< 2)
3722 error (_("Premature end of file while reading trace file"));
3723 lseek (trace_fd
, mlen
, SEEK_CUR
);
3724 pos
+= (8 + 2 + mlen
);
3727 gotten
= read (trace_fd
, &vnum
, 4);
3729 perror_with_name (trace_filename
);
3730 else if (gotten
< 4)
3731 error (_("Premature end of file while reading trace file"));
3734 gotten
= read (trace_fd
, val
, 8);
3736 perror_with_name (trace_filename
);
3737 else if (gotten
< 8)
3738 error (_("Premature end of file while reading trace file"));
3741 lseek (trace_fd
, 8, SEEK_CUR
);
3745 error ("Unknown block type '%c' (0x%x) in traceframe",
3746 block_type
, block_type
);
3750 /* Didn't find anything. */
3755 tfile_has_memory (struct target_ops
*ops
)
3761 tfile_has_stack (struct target_ops
*ops
)
3767 tfile_has_registers (struct target_ops
*ops
)
3773 init_tfile_ops (void)
3775 tfile_ops
.to_shortname
= "tfile";
3776 tfile_ops
.to_longname
= "Local trace dump file";
3778 "Use a trace file as a target. Specify the filename of the trace file.";
3779 tfile_ops
.to_open
= tfile_open
;
3780 tfile_ops
.to_close
= tfile_close
;
3781 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
3782 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
3783 tfile_ops
.to_files_info
= tfile_files_info
;
3784 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
3785 tfile_ops
.to_trace_find
= tfile_trace_find
;
3786 tfile_ops
.to_get_trace_state_variable_value
= tfile_get_trace_state_variable_value
;
3787 /* core_stratum might seem more logical, but GDB doesn't like having
3788 more than one core_stratum vector. */
3789 tfile_ops
.to_stratum
= process_stratum
;
3790 tfile_ops
.to_has_memory
= tfile_has_memory
;
3791 tfile_ops
.to_has_stack
= tfile_has_stack
;
3792 tfile_ops
.to_has_registers
= tfile_has_registers
;
3793 tfile_ops
.to_magic
= OPS_MAGIC
;
3796 /* module initialization */
3798 _initialize_tracepoint (void)
3800 struct cmd_list_element
*c
;
3802 traceframe_number
= -1;
3803 tracepoint_number
= -1;
3805 if (tracepoint_list
.list
== NULL
)
3807 tracepoint_list
.listsize
= 128;
3808 tracepoint_list
.list
= xmalloc
3809 (tracepoint_list
.listsize
* sizeof (struct memrange
));
3811 if (tracepoint_list
.aexpr_list
== NULL
)
3813 tracepoint_list
.aexpr_listsize
= 128;
3814 tracepoint_list
.aexpr_list
= xmalloc
3815 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
3818 if (stepping_list
.list
== NULL
)
3820 stepping_list
.listsize
= 128;
3821 stepping_list
.list
= xmalloc
3822 (stepping_list
.listsize
* sizeof (struct memrange
));
3825 if (stepping_list
.aexpr_list
== NULL
)
3827 stepping_list
.aexpr_listsize
= 128;
3828 stepping_list
.aexpr_list
= xmalloc
3829 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
3832 add_info ("scope", scope_info
,
3833 _("List the variables local to a scope"));
3835 add_cmd ("tracepoints", class_trace
, NULL
,
3836 _("Tracing of program execution without stopping the program."),
3839 add_com ("tdump", class_trace
, trace_dump_command
,
3840 _("Print everything collected at the current tracepoint."));
3842 add_com ("tsave", class_trace
, trace_save_command
, _("\
3843 Save the trace data to a file.\n\
3844 Use the '-r' option to direct the target to save directly to the file,\n\
3845 using its own filesystem."));
3847 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
3848 Define a trace state variable.\n\
3849 Argument is a $-prefixed name, optionally followed\n\
3850 by '=' and an expression that sets the initial value\n\
3851 at the start of tracing."));
3852 set_cmd_completer (c
, expression_completer
);
3854 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
3855 Delete one or more trace state variables.\n\
3856 Arguments are the names of the variables to delete.\n\
3857 If no arguments are supplied, delete all variables."), &deletelist
);
3858 /* FIXME add a trace variable completer */
3860 add_info ("tvariables", tvariables_info
, _("\
3861 Status of trace state variables and their values.\n\
3864 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
3865 Select a trace frame;\n\
3866 No argument means forward by one frame; '-' means backward by one frame."),
3867 &tfindlist
, "tfind ", 1, &cmdlist
);
3869 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
3870 Select a trace frame whose PC is outside the given range (exclusive).\n\
3871 Usage: tfind outside addr1, addr2"),
3874 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
3875 Select a trace frame whose PC is in the given range (inclusive).\n\
3876 Usage: tfind range addr1,addr2"),
3879 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
3880 Select a trace frame by source line.\n\
3881 Argument can be a line number (with optional source file), \n\
3882 a function name, or '*' followed by an address.\n\
3883 Default argument is 'the next source line that was traced'."),
3886 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
3887 Select a trace frame by tracepoint number.\n\
3888 Default is the tracepoint for the current trace frame."),
3891 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
3892 Select a trace frame by PC.\n\
3893 Default is the current PC, or the PC of the current trace frame."),
3896 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
3897 Synonym for 'none'.\n\
3898 De-select any trace frame and resume 'live' debugging."),
3901 add_cmd ("none", class_trace
, trace_find_none_command
,
3902 _("De-select any trace frame and resume 'live' debugging."),
3905 add_cmd ("start", class_trace
, trace_find_start_command
,
3906 _("Select the first trace frame in the trace buffer."),
3909 add_com ("tstatus", class_trace
, trace_status_command
,
3910 _("Display the status of the current trace data collection."));
3912 add_com ("tstop", class_trace
, trace_stop_command
,
3913 _("Stop trace data collection."));
3915 add_com ("tstart", class_trace
, trace_start_command
,
3916 _("Start trace data collection."));
3918 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
3919 Ends a list of commands or actions.\n\
3920 Several GDB commands allow you to enter a list of commands or actions.\n\
3921 Entering \"end\" on a line by itself is the normal way to terminate\n\
3923 Note: the \"end\" command cannot be used at the gdb prompt."));
3925 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
3926 Specify single-stepping behavior at a tracepoint.\n\
3927 Argument is number of instructions to trace in single-step mode\n\
3928 following the tracepoint. This command is normally followed by\n\
3929 one or more \"collect\" commands, to specify what to collect\n\
3930 while single-stepping.\n\n\
3931 Note: this command can only be used in a tracepoint \"actions\" list."));
3933 add_com_alias ("ws", "while-stepping", class_alias
, 0);
3934 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
3936 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
3937 Specify one or more data items to be collected at a tracepoint.\n\
3938 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
3939 collect all data (variables, registers) referenced by that expression.\n\
3940 Also accepts the following special arguments:\n\
3941 $regs -- all registers.\n\
3942 $args -- all function arguments.\n\
3943 $locals -- all variables local to the block/function scope.\n\
3944 Note: this command can only be used in a tracepoint \"actions\" list."));
3946 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
3947 Specify one or more expressions to be evaluated at a tracepoint.\n\
3948 Accepts a comma-separated list of (one or more) expressions.\n\
3949 The result of each evaluation will be discarded.\n\
3950 Note: this command can only be used in a tracepoint \"actions\" list."));
3952 add_com ("actions", class_trace
, trace_actions_command
, _("\
3953 Specify the actions to be taken at a tracepoint.\n\
3954 Tracepoint actions may include collecting of specified data, \n\
3955 single-stepping, or enabling/disabling other tracepoints, \n\
3956 depending on target's capabilities."));
3958 default_collect
= xstrdup ("");
3959 add_setshow_string_cmd ("default-collect", class_trace
,
3960 &default_collect
, _("\
3961 Set the list of expressions to collect by default"), _("\
3962 Show the list of expressions to collect by default"), NULL
,
3964 &setlist
, &showlist
);
3966 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
3967 &disconnected_tracing
, _("\
3968 Set whether tracing continues after GDB disconnects."), _("\
3969 Show whether tracing continues after GDB disconnects."), _("\
3970 Use this to continue a tracing run even if GDB disconnects\n\
3971 or detaches from the target. You can reconnect later and look at\n\
3972 trace data collected in the meantime."),
3973 set_disconnected_tracing
,
3978 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
3979 &circular_trace_buffer
, _("\
3980 Set target's use of circular trace buffer."), _("\
3981 Show target's use of circular trace buffer."), _("\
3982 Use this to make the trace buffer into a circular buffer,\n\
3983 which will discard traceframes (oldest first) instead of filling\n\
3984 up and stopping the trace run."),
3985 set_circular_trace_buffer
,
3992 add_target (&tfile_ops
);