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
);
926 printf_filtered ("Don't know LOC_UNRESOLVED %s\n",
927 SYMBOL_PRINT_NAME (sym
));
929 case LOC_OPTIMIZED_OUT
:
930 printf_filtered ("%s has been optimized out of existence.\n",
931 SYMBOL_PRINT_NAME (sym
));
939 /* Expressions are the most general case. */
942 struct agent_expr
*aexpr
;
943 struct cleanup
*old_chain1
= NULL
;
944 struct agent_reqs areqs
;
946 aexpr
= gen_trace_for_var (scope
, gdbarch
, sym
);
948 /* It can happen that the symbol is recorded as a computed
949 location, but it's been optimized away and doesn't actually
950 have a location expression. */
953 printf_filtered ("%s has been optimized out of existence.\n",
954 SYMBOL_PRINT_NAME (sym
));
958 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
960 ax_reqs (aexpr
, &areqs
);
961 if (areqs
.flaw
!= agent_flaw_none
)
962 error (_("malformed expression"));
964 if (areqs
.min_height
< 0)
965 error (_("gdb: Internal error: expression has min height < 0"));
966 if (areqs
.max_height
> 20)
967 error (_("expression too complicated, try simplifying"));
969 discard_cleanups (old_chain1
);
970 add_aexpr (collect
, aexpr
);
972 /* take care of the registers */
973 if (areqs
.reg_mask_len
> 0)
977 for (ndx1
= 0; ndx1
< areqs
.reg_mask_len
; ndx1
++)
979 QUIT
; /* allow user to bail out with ^C */
980 if (areqs
.reg_mask
[ndx1
] != 0)
982 /* assume chars have 8 bits */
983 for (ndx2
= 0; ndx2
< 8; ndx2
++)
984 if (areqs
.reg_mask
[ndx1
] & (1 << ndx2
))
985 /* it's used -- record it */
986 add_register (collect
, ndx1
* 8 + ndx2
);
993 /* Add all locals (or args) symbols to collection list */
995 add_local_symbols (struct collection_list
*collect
,
996 struct gdbarch
*gdbarch
, CORE_ADDR pc
,
997 long frame_regno
, long frame_offset
, int type
)
1000 struct block
*block
;
1001 struct dict_iterator iter
;
1004 block
= block_for_pc (pc
);
1007 QUIT
; /* allow user to bail out with ^C */
1008 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
1010 if (SYMBOL_IS_ARGUMENT (sym
)
1011 ? type
== 'A' /* collecting Arguments */
1012 : type
== 'L') /* collecting Locals */
1015 collect_symbol (collect
, sym
, gdbarch
,
1016 frame_regno
, frame_offset
, pc
);
1019 if (BLOCK_FUNCTION (block
))
1022 block
= BLOCK_SUPERBLOCK (block
);
1025 warning (_("No %s found in scope."),
1026 type
== 'L' ? "locals" : "args");
1029 /* worker function */
1031 clear_collection_list (struct collection_list
*list
)
1035 list
->next_memrange
= 0;
1036 for (ndx
= 0; ndx
< list
->next_aexpr_elt
; ndx
++)
1038 free_agent_expr (list
->aexpr_list
[ndx
]);
1039 list
->aexpr_list
[ndx
] = NULL
;
1041 list
->next_aexpr_elt
= 0;
1042 memset (list
->regs_mask
, 0, sizeof (list
->regs_mask
));
1045 /* reduce a collection list to string form (for gdb protocol) */
1047 stringify_collection_list (struct collection_list
*list
, char *string
)
1049 char temp_buf
[2048];
1053 char *(*str_list
)[];
1057 count
= 1 + list
->next_memrange
+ list
->next_aexpr_elt
+ 1;
1058 str_list
= (char *(*)[]) xmalloc (count
* sizeof (char *));
1060 for (i
= sizeof (list
->regs_mask
) - 1; i
> 0; i
--)
1061 if (list
->regs_mask
[i
] != 0) /* skip leading zeroes in regs_mask */
1063 if (list
->regs_mask
[i
] != 0) /* prepare to send regs_mask to the stub */
1066 printf_filtered ("\nCollecting registers (mask): 0x");
1071 QUIT
; /* allow user to bail out with ^C */
1073 printf_filtered ("%02X", list
->regs_mask
[i
]);
1074 sprintf (end
, "%02X", list
->regs_mask
[i
]);
1077 (*str_list
)[ndx
] = xstrdup (temp_buf
);
1081 printf_filtered ("\n");
1082 if (list
->next_memrange
> 0 && info_verbose
)
1083 printf_filtered ("Collecting memranges: \n");
1084 for (i
= 0, count
= 0, end
= temp_buf
; i
< list
->next_memrange
; i
++)
1086 QUIT
; /* allow user to bail out with ^C */
1087 sprintf_vma (tmp2
, list
->list
[i
].start
);
1090 printf_filtered ("(%d, %s, %ld)\n",
1093 (long) (list
->list
[i
].end
- list
->list
[i
].start
));
1095 if (count
+ 27 > MAX_AGENT_EXPR_LEN
)
1097 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1104 bfd_signed_vma length
= list
->list
[i
].end
- list
->list
[i
].start
;
1106 /* The "%X" conversion specifier expects an unsigned argument,
1107 so passing -1 (memrange_absolute) to it directly gives you
1108 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1110 if (list
->list
[i
].type
== memrange_absolute
)
1111 sprintf (end
, "M-1,%s,%lX", tmp2
, (long) length
);
1113 sprintf (end
, "M%X,%s,%lX", list
->list
[i
].type
, tmp2
, (long) length
);
1116 count
+= strlen (end
);
1117 end
= temp_buf
+ count
;
1120 for (i
= 0; i
< list
->next_aexpr_elt
; i
++)
1122 QUIT
; /* allow user to bail out with ^C */
1123 if ((count
+ 10 + 2 * list
->aexpr_list
[i
]->len
) > MAX_AGENT_EXPR_LEN
)
1125 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1130 sprintf (end
, "X%08X,", list
->aexpr_list
[i
]->len
);
1131 end
+= 10; /* 'X' + 8 hex digits + ',' */
1134 end
= mem2hex (list
->aexpr_list
[i
]->buf
,
1135 end
, list
->aexpr_list
[i
]->len
);
1136 count
+= 2 * list
->aexpr_list
[i
]->len
;
1141 (*str_list
)[ndx
] = savestring (temp_buf
, count
);
1146 (*str_list
)[ndx
] = NULL
;
1159 encode_actions_1 (struct command_line
*action
,
1160 struct breakpoint
*t
,
1161 struct bp_location
*tloc
,
1163 LONGEST frame_offset
,
1164 struct collection_list
*collect
,
1165 struct collection_list
*stepping_list
)
1168 struct expression
*exp
= NULL
;
1169 struct command_line
*actions
;
1171 struct value
*tempval
;
1172 struct cmd_list_element
*cmd
;
1173 struct agent_expr
*aexpr
;
1175 for (; action
; action
= action
->next
)
1177 QUIT
; /* allow user to bail out with ^C */
1178 action_exp
= action
->line
;
1179 while (isspace ((int) *action_exp
))
1182 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
1184 error (_("Bad action list item: %s"), action_exp
);
1186 if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
1189 { /* repeat over a comma-separated list */
1190 QUIT
; /* allow user to bail out with ^C */
1191 while (isspace ((int) *action_exp
))
1194 if (0 == strncasecmp ("$reg", action_exp
, 4))
1196 for (i
= 0; i
< gdbarch_num_regs (t
->gdbarch
); i
++)
1197 add_register (collect
, i
);
1198 action_exp
= strchr (action_exp
, ','); /* more? */
1200 else if (0 == strncasecmp ("$arg", action_exp
, 4))
1202 add_local_symbols (collect
,
1208 action_exp
= strchr (action_exp
, ','); /* more? */
1210 else if (0 == strncasecmp ("$loc", action_exp
, 4))
1212 add_local_symbols (collect
,
1218 action_exp
= strchr (action_exp
, ','); /* more? */
1222 unsigned long addr
, len
;
1223 struct cleanup
*old_chain
= NULL
;
1224 struct cleanup
*old_chain1
= NULL
;
1225 struct agent_reqs areqs
;
1227 exp
= parse_exp_1 (&action_exp
,
1228 block_for_pc (tloc
->address
), 1);
1229 old_chain
= make_cleanup (free_current_contents
, &exp
);
1231 switch (exp
->elts
[0].opcode
)
1235 const char *name
= &exp
->elts
[2].string
;
1237 i
= user_reg_map_name_to_regnum (t
->gdbarch
,
1238 name
, strlen (name
));
1240 internal_error (__FILE__
, __LINE__
,
1241 _("Register $%s not available"),
1244 printf_filtered ("OP_REGISTER: ");
1245 add_register (collect
, i
);
1250 /* safe because we know it's a simple expression */
1251 tempval
= evaluate_expression (exp
);
1252 addr
= value_address (tempval
);
1253 len
= TYPE_LENGTH (check_typedef (exp
->elts
[1].type
));
1254 add_memrange (collect
, memrange_absolute
, addr
, len
);
1258 collect_symbol (collect
,
1259 exp
->elts
[2].symbol
,
1266 default: /* full-fledged expression */
1267 aexpr
= gen_trace_for_expr (tloc
->address
, exp
);
1269 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1271 ax_reqs (aexpr
, &areqs
);
1272 if (areqs
.flaw
!= agent_flaw_none
)
1273 error (_("malformed expression"));
1275 if (areqs
.min_height
< 0)
1276 error (_("gdb: Internal error: expression has min height < 0"));
1277 if (areqs
.max_height
> 20)
1278 error (_("expression too complicated, try simplifying"));
1280 discard_cleanups (old_chain1
);
1281 add_aexpr (collect
, aexpr
);
1283 /* take care of the registers */
1284 if (areqs
.reg_mask_len
> 0)
1289 for (ndx1
= 0; ndx1
< areqs
.reg_mask_len
; ndx1
++)
1291 QUIT
; /* allow user to bail out with ^C */
1292 if (areqs
.reg_mask
[ndx1
] != 0)
1294 /* assume chars have 8 bits */
1295 for (ndx2
= 0; ndx2
< 8; ndx2
++)
1296 if (areqs
.reg_mask
[ndx1
] & (1 << ndx2
))
1297 /* it's used -- record it */
1298 add_register (collect
,
1305 do_cleanups (old_chain
);
1308 while (action_exp
&& *action_exp
++ == ',');
1310 else if (cmd_cfunc_eq (cmd
, teval_pseudocommand
))
1313 { /* repeat over a comma-separated list */
1314 QUIT
; /* allow user to bail out with ^C */
1315 while (isspace ((int) *action_exp
))
1319 unsigned long addr
, len
;
1320 struct cleanup
*old_chain
= NULL
;
1321 struct cleanup
*old_chain1
= NULL
;
1322 struct agent_reqs areqs
;
1324 exp
= parse_exp_1 (&action_exp
,
1325 block_for_pc (tloc
->address
), 1);
1326 old_chain
= make_cleanup (free_current_contents
, &exp
);
1328 aexpr
= gen_eval_for_expr (tloc
->address
, exp
);
1329 old_chain1
= make_cleanup_free_agent_expr (aexpr
);
1331 ax_reqs (aexpr
, &areqs
);
1332 if (areqs
.flaw
!= agent_flaw_none
)
1333 error (_("malformed expression"));
1335 if (areqs
.min_height
< 0)
1336 error (_("gdb: Internal error: expression has min height < 0"));
1337 if (areqs
.max_height
> 20)
1338 error (_("expression too complicated, try simplifying"));
1340 discard_cleanups (old_chain1
);
1341 /* Even though we're not officially collecting, add
1342 to the collect list anyway. */
1343 add_aexpr (collect
, aexpr
);
1345 do_cleanups (old_chain
);
1348 while (action_exp
&& *action_exp
++ == ',');
1350 else if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
1352 /* We check against nested while-stepping when setting
1353 breakpoint action, so no way to run into nested
1355 gdb_assert (stepping_list
);
1357 encode_actions_1 (action
->body_list
[0], t
, tloc
, frame_reg
, frame_offset
,
1358 stepping_list
, NULL
);
1361 error (_("Invalid tracepoint command '%s'"), action
->line
);
1365 /* Render all actions into gdb protocol. */
1367 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
1368 char ***tdp_actions
, char ***stepping_actions
)
1370 static char tdp_buff
[2048], step_buff
[2048];
1371 char *default_collect_line
= NULL
;
1372 struct command_line
*actions
;
1373 struct command_line
*default_collect_action
= NULL
;
1375 LONGEST frame_offset
;
1376 struct cleanup
*back_to
;
1378 back_to
= make_cleanup (null_cleanup
, NULL
);
1380 clear_collection_list (&tracepoint_list
);
1381 clear_collection_list (&stepping_list
);
1383 *tdp_actions
= NULL
;
1384 *stepping_actions
= NULL
;
1386 gdbarch_virtual_frame_pointer (t
->gdbarch
,
1387 t
->loc
->address
, &frame_reg
, &frame_offset
);
1389 actions
= t
->commands
->commands
;
1391 /* If there are default expressions to collect, make up a collect
1392 action and prepend to the action list to encode. Note that since
1393 validation is per-tracepoint (local var "xyz" might be valid for
1394 one tracepoint and not another, etc), we make up the action on
1395 the fly, and don't cache it. */
1396 if (*default_collect
)
1399 enum actionline_type linetype
;
1401 default_collect_line
= xstrprintf ("collect %s", default_collect
);
1402 make_cleanup (xfree
, default_collect_line
);
1404 line
= default_collect_line
;
1405 linetype
= validate_actionline (&line
, t
);
1406 if (linetype
!= BADLINE
)
1408 default_collect_action
= xmalloc (sizeof (struct command_line
));
1409 make_cleanup (xfree
, default_collect_action
);
1410 default_collect_action
->next
= t
->commands
->commands
;
1411 default_collect_action
->line
= line
;
1412 actions
= default_collect_action
;
1415 encode_actions_1 (actions
, t
, tloc
, frame_reg
, frame_offset
,
1416 &tracepoint_list
, &stepping_list
);
1418 memrange_sortmerge (&tracepoint_list
);
1419 memrange_sortmerge (&stepping_list
);
1421 *tdp_actions
= stringify_collection_list (&tracepoint_list
,
1423 *stepping_actions
= stringify_collection_list (&stepping_list
,
1426 do_cleanups (back_to
);
1430 add_aexpr (struct collection_list
*collect
, struct agent_expr
*aexpr
)
1432 if (collect
->next_aexpr_elt
>= collect
->aexpr_listsize
)
1434 collect
->aexpr_list
=
1435 xrealloc (collect
->aexpr_list
,
1436 2 * collect
->aexpr_listsize
* sizeof (struct agent_expr
*));
1437 collect
->aexpr_listsize
*= 2;
1439 collect
->aexpr_list
[collect
->next_aexpr_elt
] = aexpr
;
1440 collect
->next_aexpr_elt
++;
1445 start_tracing (void)
1448 VEC(breakpoint_p
) *tp_vec
= NULL
;
1450 struct breakpoint
*t
;
1451 struct trace_state_variable
*tsv
;
1452 int any_downloaded
= 0;
1454 target_trace_init ();
1456 tp_vec
= all_tracepoints ();
1457 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
1459 t
->number_on_target
= 0;
1460 target_download_tracepoint (t
);
1461 t
->number_on_target
= t
->number
;
1464 VEC_free (breakpoint_p
, tp_vec
);
1466 /* No point in tracing without any tracepoints... */
1467 if (!any_downloaded
)
1468 error ("No tracepoints downloaded, not starting trace");
1470 /* Send down all the trace state variables too. */
1471 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
1473 target_download_trace_state_variable (tsv
);
1476 /* Tell target to treat text-like sections as transparent. */
1477 target_trace_set_readonly_regions ();
1478 /* Set some mode flags. */
1479 target_set_disconnected_tracing (disconnected_tracing
);
1480 target_set_circular_trace_buffer (circular_trace_buffer
);
1482 /* Now insert traps and begin collecting data. */
1483 target_trace_start ();
1485 /* Reset our local state. */
1486 set_traceframe_num (-1);
1487 set_tracepoint_num (-1);
1488 set_traceframe_context (NULL
);
1489 current_trace_status()->running
= 1;
1494 Tell target to clear any previous trace experiment.
1495 Walk the list of tracepoints, and send them (and their actions)
1496 to the target. If no errors,
1497 Tell target to start a new trace experiment. */
1500 trace_start_command (char *args
, int from_tty
)
1502 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1509 trace_stop_command (char *args
, int from_tty
)
1517 target_trace_stop ();
1518 /* should change in response to reply? */
1519 current_trace_status ()->running
= 0;
1522 /* tstatus command */
1524 trace_status_command (char *args
, int from_tty
)
1526 struct trace_status
*ts
= current_trace_status ();
1529 status
= target_get_trace_status (ts
);
1534 printf_filtered (_("Using a trace file.\n"));
1537 printf_filtered (_("Trace can not be run on this target.\n"));
1542 if (!ts
->running_known
)
1544 printf_filtered (_("Run/stop status is unknown.\n"));
1546 else if (ts
->running
)
1548 printf_filtered (_("Trace is running on the target.\n"));
1549 if (disconnected_tracing
)
1550 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1552 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1556 switch (ts
->stop_reason
)
1558 case trace_never_run
:
1559 printf_filtered (_("No trace has been run on the target.\n"));
1562 printf_filtered (_("Trace stopped by a tstop command.\n"));
1564 case trace_buffer_full
:
1565 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1567 case trace_disconnected
:
1568 printf_filtered (_("Trace stopped because of disconnection.\n"));
1570 case tracepoint_passcount
:
1571 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1572 ts
->stopping_tracepoint
);
1574 case tracepoint_error
:
1575 if (ts
->stopping_tracepoint
)
1576 printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
1577 ts
->error_desc
, ts
->stopping_tracepoint
);
1579 printf_filtered (_("Trace stopped by an error (%s).\n"),
1582 case trace_stop_reason_unknown
:
1583 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1586 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1592 if (ts
->traceframes_created
>= 0
1593 && ts
->traceframe_count
!= ts
->traceframes_created
)
1595 printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
1596 ts
->traceframe_count
, ts
->traceframes_created
);
1598 else if (ts
->traceframe_count
>= 0)
1600 printf_filtered (_("Collected %d trace frames.\n"),
1601 ts
->traceframe_count
);
1604 if (ts
->buffer_free
>= 0)
1606 if (ts
->buffer_size
>= 0)
1608 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1609 ts
->buffer_free
, ts
->buffer_size
);
1610 if (ts
->buffer_size
> 0)
1611 printf_filtered (_(" (%d%% full)"),
1612 ((int) ((((long long) (ts
->buffer_size
1613 - ts
->buffer_free
)) * 100)
1614 / ts
->buffer_size
)));
1615 printf_filtered (_(".\n"));
1618 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1622 /* Now report on what we're doing with tfind. */
1623 if (traceframe_number
>= 0)
1624 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1625 traceframe_number
, tracepoint_number
);
1627 printf_filtered (_("Not looking at any trace frame.\n"));
1630 /* Report the trace status to uiout, in a way suitable for MI, and not
1631 suitable for CLI. If ON_STOP is true, suppress a few fields that
1632 are not meaningful in the -trace-stop response.
1634 The implementation is essentially parallel to trace_status_command, but
1635 merging them will result in unreadable code. */
1637 trace_status_mi (int on_stop
)
1639 struct trace_status
*ts
= current_trace_status ();
1641 char *string_status
;
1643 status
= target_get_trace_status (ts
);
1645 if (status
== -1 && !ts
->from_file
)
1647 ui_out_field_string (uiout
, "supported", "0");
1652 ui_out_field_string (uiout
, "supported", "file");
1654 ui_out_field_string (uiout
, "supported", "1");
1656 gdb_assert (ts
->running_known
);
1660 ui_out_field_string (uiout
, "running", "1");
1662 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
1663 Given that the frontend gets the status either on -trace-stop, or from
1664 -trace-status after re-connection, it does not seem like this
1665 information is necessary for anything. It is not necessary for either
1666 figuring the vital state of the target nor for navigation of trace
1667 frames. If the frontend wants to show the current state is some
1668 configure dialog, it can request the value when such dialog is
1669 invoked by the user. */
1673 char *stop_reason
= NULL
;
1674 int stopping_tracepoint
= -1;
1677 ui_out_field_string (uiout
, "running", "0");
1679 if (ts
->stop_reason
!= trace_stop_reason_unknown
)
1681 switch (ts
->stop_reason
)
1684 stop_reason
= "request";
1686 case trace_buffer_full
:
1687 stop_reason
= "overflow";
1689 case trace_disconnected
:
1690 stop_reason
= "disconnection";
1692 case tracepoint_passcount
:
1693 stop_reason
= "passcount";
1694 stopping_tracepoint
= ts
->stopping_tracepoint
;
1696 case tracepoint_error
:
1697 stop_reason
= "error";
1698 stopping_tracepoint
= ts
->stopping_tracepoint
;
1704 ui_out_field_string (uiout
, "stop-reason", stop_reason
);
1705 if (stopping_tracepoint
!= -1)
1706 ui_out_field_int (uiout
, "stopping-tracepoint",
1707 stopping_tracepoint
);
1708 if (ts
->stop_reason
== tracepoint_error
)
1709 ui_out_field_string (uiout
, "error-description",
1716 if ((int) ts
->traceframe_count
!= -1)
1717 ui_out_field_int (uiout
, "frames", ts
->traceframe_count
);
1718 if ((int) ts
->buffer_size
!= -1)
1719 ui_out_field_int (uiout
, "buffer-size", (int) ts
->buffer_size
);
1720 if ((int) ts
->buffer_free
!= -1)
1721 ui_out_field_int (uiout
, "buffer-free", (int) ts
->buffer_free
);
1726 disconnect_or_stop_tracing (int from_tty
)
1728 /* It can happen that the target that was tracing went away on its
1729 own, and we didn't notice. Get a status update, and if the
1730 current target doesn't even do tracing, then assume it's not
1732 if (target_get_trace_status (current_trace_status ()) < 0)
1733 current_trace_status ()->running
= 0;
1735 if (current_trace_status ()->running
&& from_tty
)
1737 int cont
= query (_("Trace is running. Continue tracing after detach? "));
1738 /* Note that we send the query result without affecting the
1739 user's setting of disconnected_tracing, so that the answer is
1741 send_disconnected_tracing_value (cont
);
1743 /* Also ensure that we do the equivalent of a tstop command if
1744 tracing is not to continue after the detach. */
1749 /* Also we want to be out of tfind mode, otherwise things can get
1750 confusing upon reconnection. Just use these calls instead of
1751 full tfind_1 behavior because we're in the middle of detaching,
1752 and there's no point to updating current stack frame etc. */
1753 set_traceframe_number (-1);
1754 set_traceframe_context (NULL
);
1757 /* Worker function for the various flavors of the tfind command. */
1759 tfind_1 (enum trace_find_type type
, int num
,
1760 ULONGEST addr1
, ULONGEST addr2
,
1763 int target_frameno
= -1, target_tracept
= -1;
1764 struct frame_id old_frame_id
;
1766 struct breakpoint
*tp
;
1768 old_frame_id
= get_frame_id (get_current_frame ());
1770 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
1773 if (type
== tfind_number
1775 && target_frameno
== -1)
1777 /* We told the target to get out of tfind mode, and it did. */
1779 else if (target_frameno
== -1)
1781 /* A request for a non-existant trace frame has failed.
1782 Our response will be different, depending on FROM_TTY:
1784 If FROM_TTY is true, meaning that this command was
1785 typed interactively by the user, then give an error
1786 and DO NOT change the state of traceframe_number etc.
1788 However if FROM_TTY is false, meaning that we're either
1789 in a script, a loop, or a user-defined command, then
1790 DON'T give an error, but DO change the state of
1791 traceframe_number etc. to invalid.
1793 The rationalle is that if you typed the command, you
1794 might just have committed a typo or something, and you'd
1795 like to NOT lose your current debugging state. However
1796 if you're in a user-defined command or especially in a
1797 loop, then you need a way to detect that the command
1798 failed WITHOUT aborting. This allows you to write
1799 scripts that search thru the trace buffer until the end,
1800 and then continue on to do something else. */
1803 error (_("Target failed to find requested trace frame."));
1807 printf_filtered ("End of trace buffer.\n");
1808 #if 0 /* dubious now? */
1809 /* The following will not recurse, since it's
1811 trace_find_command ("-1", from_tty
);
1816 tp
= get_tracepoint_by_number_on_target (target_tracept
);
1818 reinit_frame_cache ();
1819 registers_changed ();
1820 target_dcache_invalidate ();
1821 set_traceframe_num (target_frameno
);
1822 set_tracepoint_num (tp
? tp
->number
: target_tracept
);
1823 if (target_frameno
== -1)
1824 set_traceframe_context (NULL
);
1826 set_traceframe_context (get_current_frame ());
1828 if (traceframe_number
>= 0)
1830 /* Use different branches for MI and CLI to make CLI messages
1832 if (ui_out_is_mi_like_p (uiout
))
1834 ui_out_field_string (uiout
, "found", "1");
1835 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
1836 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
1840 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1841 traceframe_number
, tracepoint_number
);
1846 if (ui_out_is_mi_like_p (uiout
))
1847 ui_out_field_string (uiout
, "found", "0");
1849 printf_unfiltered (_("No trace frame found"));
1852 /* If we're in nonstop mode and getting out of looking at trace
1853 frames, there won't be any current frame to go back to and
1856 && (has_stack_frames () || traceframe_number
>= 0))
1858 enum print_what print_what
;
1860 /* NOTE: in immitation of the step command, try to determine
1861 whether we have made a transition from one function to
1862 another. If so, we'll print the "stack frame" (ie. the new
1863 function and it's arguments) -- otherwise we'll just show the
1866 if (frame_id_eq (old_frame_id
,
1867 get_frame_id (get_current_frame ())))
1868 print_what
= SRC_LINE
;
1870 print_what
= SRC_AND_LOC
;
1872 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
1877 /* trace_find_command takes a trace frame number n,
1878 sends "QTFrame:<n>" to the target,
1879 and accepts a reply that may contain several optional pieces
1880 of information: a frame number, a tracepoint number, and an
1881 indication of whether this is a trap frame or a stepping frame.
1883 The minimal response is just "OK" (which indicates that the
1884 target does not give us a frame number or a tracepoint number).
1885 Instead of that, the target may send us a string containing
1887 F<hexnum> (gives the selected frame number)
1888 T<hexnum> (gives the selected tracepoint number)
1893 trace_find_command (char *args
, int from_tty
)
1894 { /* this should only be called with a numeric argument */
1897 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1898 error ("May not look at trace frames while trace is running.");
1900 if (args
== 0 || *args
== 0)
1901 { /* TFIND with no args means find NEXT trace frame. */
1902 if (traceframe_number
== -1)
1903 frameno
= 0; /* "next" is first one */
1905 frameno
= traceframe_number
+ 1;
1907 else if (0 == strcmp (args
, "-"))
1909 if (traceframe_number
== -1)
1910 error (_("not debugging trace buffer"));
1911 else if (from_tty
&& traceframe_number
== 0)
1912 error (_("already at start of trace buffer"));
1914 frameno
= traceframe_number
- 1;
1916 /* A hack to work around eval's need for fp to have been collected. */
1917 else if (0 == strcmp (args
, "-1"))
1920 frameno
= parse_and_eval_long (args
);
1923 error (_("invalid input (%d is less than zero)"), frameno
);
1925 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
1930 trace_find_end_command (char *args
, int from_tty
)
1932 trace_find_command ("-1", from_tty
);
1937 trace_find_none_command (char *args
, int from_tty
)
1939 trace_find_command ("-1", from_tty
);
1944 trace_find_start_command (char *args
, int from_tty
)
1946 trace_find_command ("0", from_tty
);
1949 /* tfind pc command */
1951 trace_find_pc_command (char *args
, int from_tty
)
1956 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1957 error ("May not look at trace frames while trace is running.");
1959 if (args
== 0 || *args
== 0)
1960 pc
= regcache_read_pc (get_current_regcache ());
1962 pc
= parse_and_eval_address (args
);
1964 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
1967 /* tfind tracepoint command */
1969 trace_find_tracepoint_command (char *args
, int from_tty
)
1972 struct breakpoint
*tp
;
1974 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1975 error ("May not look at trace frames while trace is running.");
1977 if (args
== 0 || *args
== 0)
1979 if (tracepoint_number
== -1)
1980 error (_("No current tracepoint -- please supply an argument."));
1982 tdp
= tracepoint_number
; /* default is current TDP */
1985 tdp
= parse_and_eval_long (args
);
1987 /* If we have the tracepoint on hand, use the number that the
1988 target knows about (which may be different if we disconnected
1989 and reconnected). */
1990 tp
= get_tracepoint (tdp
);
1992 tdp
= tp
->number_on_target
;
1994 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
1997 /* TFIND LINE command:
1999 This command will take a sourceline for argument, just like BREAK
2000 or TRACE (ie. anything that "decode_line_1" can handle).
2002 With no argument, this command will find the next trace frame
2003 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2006 trace_find_line_command (char *args
, int from_tty
)
2008 static CORE_ADDR start_pc
, end_pc
;
2009 struct symtabs_and_lines sals
;
2010 struct symtab_and_line sal
;
2011 struct cleanup
*old_chain
;
2012 char startpc_str
[40], endpc_str
[40];
2014 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2015 error ("May not look at trace frames while trace is running.");
2017 if (args
== 0 || *args
== 0)
2019 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2021 sals
.sals
= (struct symtab_and_line
*)
2022 xmalloc (sizeof (struct symtab_and_line
));
2027 sals
= decode_line_spec (args
, 1);
2031 old_chain
= make_cleanup (xfree
, sals
.sals
);
2032 if (sal
.symtab
== 0)
2034 printf_filtered ("TFIND: No line number information available");
2037 /* This is useful for "info line *0x7f34". If we can't
2038 tell the user about a source line, at least let them
2039 have the symbolic address. */
2040 printf_filtered (" for address ");
2042 print_address (get_current_arch (), sal
.pc
, gdb_stdout
);
2043 printf_filtered (";\n -- will attempt to find by PC. \n");
2047 printf_filtered (".\n");
2048 return; /* No line, no PC; what can we do? */
2051 else if (sal
.line
> 0
2052 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2054 if (start_pc
== end_pc
)
2056 printf_filtered ("Line %d of \"%s\"",
2057 sal
.line
, sal
.symtab
->filename
);
2059 printf_filtered (" is at address ");
2060 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2062 printf_filtered (" but contains no code.\n");
2063 sal
= find_pc_line (start_pc
, 0);
2065 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2066 && start_pc
!= end_pc
)
2067 printf_filtered ("Attempting to find line %d instead.\n",
2070 error (_("Cannot find a good line."));
2074 /* Is there any case in which we get here, and have an address
2075 which the user would want to see? If we have debugging
2076 symbols and no line numbers? */
2077 error (_("Line number %d is out of range for \"%s\"."),
2078 sal
.line
, sal
.symtab
->filename
);
2080 /* Find within range of stated line. */
2082 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2084 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2085 do_cleanups (old_chain
);
2088 /* tfind range command */
2090 trace_find_range_command (char *args
, int from_tty
)
2092 static CORE_ADDR start
, stop
;
2093 char start_str
[40], stop_str
[40];
2096 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2097 error ("May not look at trace frames while trace is running.");
2099 if (args
== 0 || *args
== 0)
2100 { /* XXX FIXME: what should default behavior be? */
2101 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2105 if (0 != (tmp
= strchr (args
, ',')))
2107 *tmp
++ = '\0'; /* terminate start address */
2108 while (isspace ((int) *tmp
))
2110 start
= parse_and_eval_address (args
);
2111 stop
= parse_and_eval_address (tmp
);
2114 { /* no explicit end address? */
2115 start
= parse_and_eval_address (args
);
2116 stop
= start
+ 1; /* ??? */
2119 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2122 /* tfind outside command */
2124 trace_find_outside_command (char *args
, int from_tty
)
2126 CORE_ADDR start
, stop
;
2127 char start_str
[40], stop_str
[40];
2130 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2131 error ("May not look at trace frames while trace is running.");
2133 if (args
== 0 || *args
== 0)
2134 { /* XXX FIXME: what should default behavior be? */
2135 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2139 if (0 != (tmp
= strchr (args
, ',')))
2141 *tmp
++ = '\0'; /* terminate start address */
2142 while (isspace ((int) *tmp
))
2144 start
= parse_and_eval_address (args
);
2145 stop
= parse_and_eval_address (tmp
);
2148 { /* no explicit end address? */
2149 start
= parse_and_eval_address (args
);
2150 stop
= start
+ 1; /* ??? */
2153 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2156 /* info scope command: list the locals for a scope. */
2158 scope_info (char *args
, int from_tty
)
2160 struct symtabs_and_lines sals
;
2162 struct minimal_symbol
*msym
;
2163 struct block
*block
;
2164 char **canonical
, *symname
, *save_args
= args
;
2165 struct dict_iterator iter
;
2167 struct gdbarch
*gdbarch
;
2170 if (args
== 0 || *args
== 0)
2171 error (_("requires an argument (function, line or *addr) to define a scope"));
2173 sals
= decode_line_1 (&args
, 1, NULL
, 0, &canonical
, NULL
);
2174 if (sals
.nelts
== 0)
2175 return; /* presumably decode_line_1 has already warned */
2177 /* Resolve line numbers to PC */
2178 resolve_sal_pc (&sals
.sals
[0]);
2179 block
= block_for_pc (sals
.sals
[0].pc
);
2183 QUIT
; /* allow user to bail out with ^C */
2184 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2186 QUIT
; /* allow user to bail out with ^C */
2188 printf_filtered ("Scope for %s:\n", save_args
);
2191 symname
= SYMBOL_PRINT_NAME (sym
);
2192 if (symname
== NULL
|| *symname
== '\0')
2193 continue; /* probably botched, certainly useless */
2195 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2197 printf_filtered ("Symbol %s is ", symname
);
2198 switch (SYMBOL_CLASS (sym
))
2201 case LOC_UNDEF
: /* messed up symbol? */
2202 printf_filtered ("a bogus symbol, class %d.\n",
2203 SYMBOL_CLASS (sym
));
2204 count
--; /* don't count this one */
2207 printf_filtered ("a constant with value %ld (0x%lx)",
2208 SYMBOL_VALUE (sym
), SYMBOL_VALUE (sym
));
2210 case LOC_CONST_BYTES
:
2211 printf_filtered ("constant bytes: ");
2212 if (SYMBOL_TYPE (sym
))
2213 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2214 fprintf_filtered (gdb_stdout
, " %02x",
2215 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2218 printf_filtered ("in static storage at address ");
2219 printf_filtered ("%s", paddress (gdbarch
,
2220 SYMBOL_VALUE_ADDRESS (sym
)));
2223 /* GDBARCH is the architecture associated with the objfile
2224 the symbol is defined in; the target architecture may be
2225 different, and may provide additional registers. However,
2226 we do not know the target architecture at this point.
2227 We assume the objfile architecture will contain all the
2228 standard registers that occur in debug info in that
2230 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2232 if (SYMBOL_IS_ARGUMENT (sym
))
2233 printf_filtered ("an argument in register $%s",
2234 gdbarch_register_name (gdbarch
, regno
));
2236 printf_filtered ("a local variable in register $%s",
2237 gdbarch_register_name (gdbarch
, regno
));
2240 printf_filtered ("an argument at stack/frame offset %ld",
2241 SYMBOL_VALUE (sym
));
2244 printf_filtered ("a local variable at frame offset %ld",
2245 SYMBOL_VALUE (sym
));
2248 printf_filtered ("a reference argument at offset %ld",
2249 SYMBOL_VALUE (sym
));
2251 case LOC_REGPARM_ADDR
:
2252 /* Note comment at LOC_REGISTER. */
2253 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2254 printf_filtered ("the address of an argument, in register $%s",
2255 gdbarch_register_name (gdbarch
, regno
));
2258 printf_filtered ("a typedef.\n");
2261 printf_filtered ("a label at address ");
2262 printf_filtered ("%s", paddress (gdbarch
,
2263 SYMBOL_VALUE_ADDRESS (sym
)));
2266 printf_filtered ("a function at address ");
2267 printf_filtered ("%s",
2268 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2270 case LOC_UNRESOLVED
:
2271 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2274 printf_filtered ("Unresolved Static");
2277 printf_filtered ("static storage at address ");
2278 printf_filtered ("%s",
2279 paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (msym
)));
2282 case LOC_OPTIMIZED_OUT
:
2283 printf_filtered ("optimized out.\n");
2286 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, gdb_stdout
);
2289 if (SYMBOL_TYPE (sym
))
2290 printf_filtered (", length %d.\n",
2291 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2293 if (BLOCK_FUNCTION (block
))
2296 block
= BLOCK_SUPERBLOCK (block
);
2299 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2303 /* worker function (cleanup) */
2305 replace_comma (void *data
)
2313 trace_dump_command (char *args
, int from_tty
)
2315 struct regcache
*regcache
;
2316 struct gdbarch
*gdbarch
;
2317 struct breakpoint
*t
;
2318 struct command_line
*action
;
2319 char *action_exp
, *next_comma
;
2320 struct cleanup
*old_cleanups
;
2321 int stepping_actions
= 0;
2322 int stepping_frame
= 0;
2323 struct bp_location
*loc
;
2325 if (tracepoint_number
== -1)
2327 warning (_("No current trace frame."));
2331 t
= get_tracepoint (tracepoint_number
);
2334 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2337 old_cleanups
= make_cleanup (null_cleanup
, NULL
);
2339 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2340 tracepoint_number
, traceframe_number
);
2342 /* The current frame is a trap frame if the frame PC is equal
2343 to the tracepoint PC. If not, then the current frame was
2344 collected during single-stepping. */
2346 regcache
= get_current_regcache ();
2347 gdbarch
= get_regcache_arch (regcache
);
2349 /* If the traceframe's address matches any of the tracepoint's
2350 locations, assume it is a direct hit rather than a while-stepping
2351 frame. (FIXME this is not reliable, should record each frame's
2354 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2355 if (loc
->address
== regcache_read_pc (regcache
))
2358 for (action
= t
->commands
->commands
; action
; action
= action
->next
)
2360 struct cmd_list_element
*cmd
;
2362 QUIT
; /* allow user to bail out with ^C */
2363 action_exp
= action
->line
;
2364 while (isspace ((int) *action_exp
))
2367 /* The collection actions to be done while stepping are
2368 bracketed by the commands "while-stepping" and "end". */
2370 if (*action_exp
== '#') /* comment line */
2373 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2375 error (_("Bad action list item: %s"), action_exp
);
2377 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2378 stepping_actions
= 1;
2379 else if (cmd_cfunc_eq (cmd
, end_actions_pseudocommand
))
2380 stepping_actions
= 0;
2381 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2383 /* Display the collected data.
2384 For the trap frame, display only what was collected at
2385 the trap. Likewise for stepping frames, display only
2386 what was collected while stepping. This means that the
2387 two boolean variables, STEPPING_FRAME and
2388 STEPPING_ACTIONS should be equal. */
2389 if (stepping_frame
== stepping_actions
)
2392 { /* repeat over a comma-separated list */
2393 QUIT
; /* allow user to bail out with ^C */
2394 if (*action_exp
== ',')
2396 while (isspace ((int) *action_exp
))
2399 next_comma
= strchr (action_exp
, ',');
2401 if (0 == strncasecmp (action_exp
, "$reg", 4))
2402 registers_info (NULL
, from_tty
);
2403 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2404 locals_info (NULL
, from_tty
);
2405 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2406 args_info (NULL
, from_tty
);
2411 make_cleanup (replace_comma
, next_comma
);
2414 printf_filtered ("%s = ", action_exp
);
2415 output_command (action_exp
, from_tty
);
2416 printf_filtered ("\n");
2420 action_exp
= next_comma
;
2422 while (action_exp
&& *action_exp
== ',');
2426 discard_cleanups (old_cleanups
);
2429 extern int trace_regblock_size
;
2431 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2432 non-zero, the save is performed on the target, otherwise GDB obtains all
2433 trace data and saves it locally. */
2436 trace_save (const char *filename
, int target_does_save
)
2438 struct cleanup
*cleanup
;
2440 struct trace_status
*ts
= current_trace_status ();
2443 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
2444 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
2447 ULONGEST offset
= 0;
2448 #define MAX_TRACE_UPLOAD 2000
2449 gdb_byte buf
[MAX_TRACE_UPLOAD
];
2452 /* If the target is to save the data to a file on its own, then just
2453 send the command and be done with it. */
2454 if (target_does_save
)
2456 err
= target_save_trace_data (filename
);
2458 error (_("Target failed to save trace data to '%s'."),
2463 /* Get the trace status first before opening the file, so if the
2464 target is losing, we can get out without touching files. */
2465 status
= target_get_trace_status (ts
);
2467 pathname
= tilde_expand (filename
);
2468 cleanup
= make_cleanup (xfree
, pathname
);
2470 fp
= fopen (pathname
, "w");
2472 error (_("Unable to open file '%s' for saving trace data (%s)"),
2473 filename
, safe_strerror (errno
));
2474 make_cleanup_fclose (fp
);
2476 /* Write a file header, with a high-bit-set char to indicate a
2477 binary file, plus a hint as what this file is, and a version
2478 number in case of future needs. */
2479 written
= fwrite ("\x7fTRACE0\n", 8, 1, fp
);
2481 perror_with_name (pathname
);
2483 /* Write descriptive info. */
2485 /* Write out the size of a register block. */
2486 fprintf (fp
, "R %x\n", trace_regblock_size
);
2488 /* Write out status of the tracing run (aka "tstatus" info). */
2489 fprintf (fp
, "status %c;%s",
2490 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
2491 if (ts
->stop_reason
== tracepoint_error
)
2493 char *buf
= (char *) alloca (strlen (ts
->error_desc
) * 2 + 1);
2494 bin2hex ((gdb_byte
*) ts
->error_desc
, buf
, 0);
2495 fprintf (fp
, ":%s", buf
);
2497 fprintf (fp
, ":%x", ts
->stopping_tracepoint
);
2498 if (ts
->traceframe_count
>= 0)
2499 fprintf (fp
, ";tframes:%x", ts
->traceframe_count
);
2500 if (ts
->traceframes_created
>= 0)
2501 fprintf (fp
, ";tcreated:%x", ts
->traceframes_created
);
2502 if (ts
->buffer_free
>= 0)
2503 fprintf (fp
, ";tfree:%x", ts
->buffer_free
);
2504 if (ts
->buffer_size
>= 0)
2505 fprintf (fp
, ";tsize:%x", ts
->buffer_size
);
2508 /* Note that we want to upload tracepoints and save those, rather
2509 than simply writing out the local ones, because the user may have
2510 changed tracepoints in GDB in preparation for a future tracing
2511 run, or maybe just mass-deleted all types of breakpoints as part
2512 of cleaning up. So as not to contaminate the session, leave the
2513 data in its uploaded form, don't make into real tracepoints. */
2515 /* Get trace state variables first, they may be checked when parsing
2516 uploaded commands. */
2518 target_upload_trace_state_variables (&uploaded_tsvs
);
2520 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2526 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
2527 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
2530 fprintf (fp
, "tsv %x:%s:%x:%s\n",
2531 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
2532 utsv
->builtin
, buf
);
2538 free_uploaded_tsvs (&uploaded_tsvs
);
2540 target_upload_tracepoints (&uploaded_tps
);
2542 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
2544 fprintf (fp
, "tp T%x:%s:%c:%x:%x",
2545 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2546 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
2547 if (utp
->type
== bp_fast_tracepoint
)
2548 fprintf (fp
, ":F%x", utp
->orig_size
);
2550 fprintf (fp
, ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
2553 for (a
= 0; a
< utp
->numactions
; ++a
)
2554 fprintf (fp
, "tp A%x:%s:%s\n",
2555 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2557 for (a
= 0; a
< utp
->num_step_actions
; ++a
)
2558 fprintf (fp
, "tp S%x:%s:%s\n",
2559 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2560 utp
->step_actions
[a
]);
2563 free_uploaded_tps (&uploaded_tps
);
2565 /* Mark the end of the definition section. */
2568 /* Get and write the trace data proper. We ask for big blocks, in
2569 the hopes of efficiency, but will take less if the target has
2570 packet size limitations or some such. */
2573 gotten
= target_get_raw_trace_data (buf
, offset
, MAX_TRACE_UPLOAD
);
2575 error (_("Failure to get requested trace buffer data"));
2576 /* No more data is forthcoming, we're done. */
2579 written
= fwrite (buf
, gotten
, 1, fp
);
2580 if (written
< gotten
)
2581 perror_with_name (pathname
);
2585 /* Mark the end of trace data. */
2586 written
= fwrite (&gotten
, 4, 1, fp
);
2588 perror_with_name (pathname
);
2590 do_cleanups (cleanup
);
2594 trace_save_command (char *args
, int from_tty
)
2596 int target_does_save
= 0;
2598 char *filename
= NULL
;
2599 struct cleanup
*back_to
;
2602 error_no_arg (_("file in which to save trace data"));
2604 argv
= gdb_buildargv (args
);
2605 back_to
= make_cleanup_freeargv (argv
);
2607 for (; *argv
; ++argv
)
2609 if (strcmp (*argv
, "-r") == 0)
2610 target_does_save
= 1;
2611 else if (**argv
== '-')
2612 error (_("unknown option `%s'"), *argv
);
2618 error_no_arg (_("file in which to save trace data"));
2620 trace_save (filename
, target_does_save
);
2623 printf_filtered (_("Trace data saved to file '%s'.\n"), args
);
2625 do_cleanups (back_to
);
2628 /* Tell the target what to do with an ongoing tracing run if GDB
2629 disconnects for some reason. */
2632 send_disconnected_tracing_value (int value
)
2634 target_set_disconnected_tracing (value
);
2638 set_disconnected_tracing (char *args
, int from_tty
,
2639 struct cmd_list_element
*c
)
2641 send_disconnected_tracing_value (disconnected_tracing
);
2645 set_circular_trace_buffer (char *args
, int from_tty
,
2646 struct cmd_list_element
*c
)
2648 target_set_circular_trace_buffer (circular_trace_buffer
);
2651 /* Convert the memory pointed to by mem into hex, placing result in buf.
2652 * Return a pointer to the last char put in buf (null)
2653 * "stolen" from sparc-stub.c
2656 static const char hexchars
[] = "0123456789abcdef";
2659 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
2667 *buf
++ = hexchars
[ch
>> 4];
2668 *buf
++ = hexchars
[ch
& 0xf];
2677 get_traceframe_number (void)
2679 return traceframe_number
;
2682 /* Make the traceframe NUM be the current trace frame. Does nothing
2683 if NUM is already current. */
2686 set_traceframe_number (int num
)
2690 if (traceframe_number
== num
)
2692 /* Nothing to do. */
2696 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
2699 warning (_("could not change traceframe"));
2701 traceframe_number
= newnum
;
2703 /* Changing the traceframe changes our view of registers and of the
2705 registers_changed ();
2708 /* A cleanup used when switching away and back from tfind mode. */
2710 struct current_traceframe_cleanup
2712 /* The traceframe we were inspecting. */
2713 int traceframe_number
;
2717 do_restore_current_traceframe_cleanup (void *arg
)
2719 struct current_traceframe_cleanup
*old
= arg
;
2721 set_traceframe_number (old
->traceframe_number
);
2725 restore_current_traceframe_cleanup_dtor (void *arg
)
2727 struct current_traceframe_cleanup
*old
= arg
;
2733 make_cleanup_restore_current_traceframe (void)
2735 struct current_traceframe_cleanup
*old
;
2737 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
2738 old
->traceframe_number
= traceframe_number
;
2740 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
2741 restore_current_traceframe_cleanup_dtor
);
2744 /* Given a number and address, return an uploaded tracepoint with that
2745 number, creating if necessary. */
2747 struct uploaded_tp
*
2748 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
2750 struct uploaded_tp
*utp
;
2752 for (utp
= *utpp
; utp
; utp
= utp
->next
)
2753 if (utp
->number
== num
&& utp
->addr
== addr
)
2755 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
2756 memset (utp
, 0, sizeof (struct uploaded_tp
));
2765 free_uploaded_tps (struct uploaded_tp
**utpp
)
2767 struct uploaded_tp
*next_one
;
2771 next_one
= (*utpp
)->next
;
2777 /* Given a number and address, return an uploaded tracepoint with that
2778 number, creating if necessary. */
2780 struct uploaded_tsv
*
2781 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
2783 struct uploaded_tsv
*utsv
;
2785 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
2786 if (utsv
->number
== num
)
2788 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
2789 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
2791 utsv
->next
= *utsvp
;
2797 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
2799 struct uploaded_tsv
*next_one
;
2803 next_one
= (*utsvp
)->next
;
2809 /* Look for an existing tracepoint that seems similar enough to the
2810 uploaded one. Enablement isn't compared, because the user can
2811 toggle that freely, and may have done so in anticipation of the
2815 find_matching_tracepoint (struct uploaded_tp
*utp
)
2817 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
2819 struct breakpoint
*t
;
2820 struct bp_location
*loc
;
2822 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2824 if (t
->type
== utp
->type
2825 && t
->step_count
== utp
->step
2826 && t
->pass_count
== utp
->pass
2827 /* FIXME also test conditionals and actions */
2830 /* Scan the locations for an address match. */
2831 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2833 if (loc
->address
== utp
->addr
)
2841 /* Given a list of tracepoints uploaded from a target, attempt to
2842 match them up with existing tracepoints, and create new ones if not
2846 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
2848 struct uploaded_tp
*utp
;
2849 struct breakpoint
*t
;
2851 /* Look for GDB tracepoints that match up with our uploaded versions. */
2852 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
2854 t
= find_matching_tracepoint (utp
);
2856 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
2857 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2860 t
= create_tracepoint_from_upload (utp
);
2862 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
2863 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2865 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
2866 utp
->number
, paddress (get_current_arch (), utp
->addr
));
2868 /* Whether found or created, record the number used by the
2869 target, to help with mapping target tracepoints back to their
2870 counterparts here. */
2872 t
->number_on_target
= utp
->number
;
2875 free_uploaded_tps (uploaded_tps
);
2878 /* Trace state variables don't have much to identify them beyond their
2879 name, so just use that to detect matches. */
2881 struct trace_state_variable
*
2882 find_matching_tsv (struct uploaded_tsv
*utsv
)
2887 return find_trace_state_variable (utsv
->name
);
2890 struct trace_state_variable
*
2891 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
2893 const char *namebase
;
2896 struct trace_state_variable
*tsv
;
2900 namebase
= utsv
->name
;
2901 sprintf (buf
, "%s", namebase
);
2906 sprintf (buf
, "%s_%d", namebase
, try_num
++);
2909 /* Fish for a name that is not in use. */
2910 /* (should check against all internal vars?) */
2911 while (find_trace_state_variable (buf
))
2912 sprintf (buf
, "%s_%d", namebase
, try_num
++);
2914 /* We have an available name, create the variable. */
2915 tsv
= create_trace_state_variable (xstrdup (buf
));
2916 tsv
->initial_value
= utsv
->initial_value
;
2917 tsv
->builtin
= utsv
->builtin
;
2922 /* Given a list of uploaded trace state variables, try to match them
2923 up with existing variables, or create additional ones. */
2926 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
2929 struct uploaded_tsv
*utsv
;
2930 struct trace_state_variable
*tsv
;
2933 /* Most likely some numbers will have to be reassigned as part of
2934 the merge, so clear them all in anticipation. */
2935 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2938 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2940 tsv
= find_matching_tsv (utsv
);
2942 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
2943 tsv
->name
, utsv
->number
);
2946 tsv
= create_tsv_from_upload (utsv
);
2947 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
2948 tsv
->name
, utsv
->number
);
2950 /* Give precedence to numberings that come from the target. */
2952 tsv
->number
= utsv
->number
;
2955 /* Renumber everything that didn't get a target-assigned number. */
2957 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2958 if (tsv
->number
> highest
)
2959 highest
= tsv
->number
;
2962 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2963 if (tsv
->number
== 0)
2964 tsv
->number
= highest
++;
2966 free_uploaded_tsvs (uploaded_tsvs
);
2969 /* target tfile command */
2971 struct target_ops tfile_ops
;
2973 /* Fill in tfile_ops with its defined operations and properties. */
2975 #define TRACE_HEADER_SIZE 8
2977 char *trace_filename
;
2979 off_t trace_frames_offset
;
2982 int trace_regblock_size
;
2984 static void tfile_interp_line (char *line
,
2985 struct uploaded_tp
**utpp
,
2986 struct uploaded_tsv
**utsvp
);
2989 tfile_open (char *filename
, int from_tty
)
2992 struct cleanup
*old_chain
;
2995 char header
[TRACE_HEADER_SIZE
];
2996 char linebuf
[1000]; /* should be max remote packet size or so */
2998 int bytes
, i
, gotten
;
2999 struct trace_status
*ts
;
3000 struct uploaded_tp
*uploaded_tps
= NULL
;
3001 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3003 target_preopen (from_tty
);
3005 error (_("No trace file specified."));
3007 filename
= tilde_expand (filename
);
3008 if (!IS_ABSOLUTE_PATH(filename
))
3010 temp
= concat (current_directory
, "/", filename
, (char *)NULL
);
3015 old_chain
= make_cleanup (xfree
, filename
);
3017 flags
= O_BINARY
| O_LARGEFILE
;
3019 scratch_chan
= open (filename
, flags
, 0);
3020 if (scratch_chan
< 0)
3021 perror_with_name (filename
);
3023 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3025 discard_cleanups (old_chain
); /* Don't free filename any more */
3026 unpush_target (&tfile_ops
);
3028 push_target (&tfile_ops
);
3030 trace_filename
= xstrdup (filename
);
3031 trace_fd
= scratch_chan
;
3034 /* Read the file header and test for validity. */
3035 gotten
= read (trace_fd
, &header
, TRACE_HEADER_SIZE
);
3037 perror_with_name (trace_filename
);
3038 else if (gotten
< TRACE_HEADER_SIZE
)
3039 error (_("Premature end of file while reading trace file"));
3041 bytes
+= TRACE_HEADER_SIZE
;
3042 if (!(header
[0] == 0x7f
3043 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
3044 error (_("File is not a valid trace file."));
3046 trace_regblock_size
= 0;
3047 ts
= current_trace_status ();
3048 /* We know we're working with a file. */
3050 /* Set defaults in case there is no status line. */
3051 ts
->running_known
= 0;
3052 ts
->stop_reason
= trace_stop_reason_unknown
;
3053 ts
->traceframe_count
= -1;
3054 ts
->buffer_free
= 0;
3056 /* Read through a section of newline-terminated lines that
3057 define things like tracepoints. */
3061 gotten
= read (trace_fd
, &byte
, 1);
3063 perror_with_name (trace_filename
);
3064 else if (gotten
< 1)
3065 error (_("Premature end of file while reading trace file"));
3070 /* Empty line marks end of the definition section. */
3075 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
3078 linebuf
[i
++] = byte
;
3080 error (_("Excessively long lines in trace file"));
3083 /* Add the file's tracepoints and variables into the current mix. */
3085 /* Get trace state variables first, they may be checked when parsing
3086 uploaded commands. */
3087 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3089 merge_uploaded_tracepoints (&uploaded_tps
);
3091 /* Record the starting offset of the binary trace data. */
3092 trace_frames_offset
= bytes
;
3094 /* If we don't have a blocksize, we can't interpret the
3096 if (trace_regblock_size
== 0)
3097 error (_("No register block size recorded in trace file"));
3098 if (ts
->traceframe_count
<= 0)
3100 warning ("No traceframes present in this file.");
3104 #define TFILE_PID (1)
3105 inferior_appeared (current_inferior (), TFILE_PID
);
3106 inferior_ptid
= pid_to_ptid (TFILE_PID
);
3107 add_thread_silent (inferior_ptid
);
3109 post_create_inferior (&tfile_ops
, from_tty
);
3112 /* FIXME this will get defined in MI patch submission */
3113 tfind_1 (tfind_number
, 0, 0, 0, 0);
3117 /* Interpret the given line from the definitions part of the trace
3121 tfile_interp_line (char *line
,
3122 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
3126 if (strncmp (p
, "R ", strlen ("R ")) == 0)
3129 trace_regblock_size
= strtol (p
, &p
, 16);
3131 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
3133 p
+= strlen ("status ");
3134 parse_trace_status (p
, current_trace_status ());
3136 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
3138 p
+= strlen ("tp ");
3139 parse_tracepoint_definition (p
, utpp
);
3141 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
3143 p
+= strlen ("tsv ");
3144 parse_tsv_definition (p
, utsvp
);
3147 warning ("Ignoring trace file definition \"%s\"", line
);
3150 /* Parse the part of trace status syntax that is shared between
3151 the remote protocol and the trace file reader. */
3153 extern char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
3156 parse_trace_status (char *line
, struct trace_status
*ts
)
3158 char *p
= line
, *p1
, *p2
, *p_temp
;
3161 ts
->running_known
= 1;
3162 ts
->running
= (*p
++ == '1');
3163 ts
->stop_reason
= trace_stop_reason_unknown
;
3164 xfree (ts
->error_desc
);
3165 ts
->error_desc
= NULL
;
3166 ts
->traceframe_count
= -1;
3167 ts
->traceframes_created
= -1;
3168 ts
->buffer_free
= -1;
3169 ts
->buffer_size
= -1;
3173 p1
= strchr (p
, ':');
3175 error (_("Malformed trace status, at %s\n\
3176 Status line: '%s'\n"), p
, line
);
3177 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
3179 p
= unpack_varlen_hex (++p1
, &val
);
3180 ts
->stop_reason
= trace_buffer_full
;
3182 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
3184 p
= unpack_varlen_hex (++p1
, &val
);
3185 ts
->stop_reason
= trace_never_run
;
3187 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
], p1
- p
) == 0)
3189 p
= unpack_varlen_hex (++p1
, &val
);
3190 ts
->stop_reason
= tracepoint_passcount
;
3191 ts
->stopping_tracepoint
= val
;
3193 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
3195 p
= unpack_varlen_hex (++p1
, &val
);
3196 ts
->stop_reason
= tstop_command
;
3198 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
3200 p2
= strchr (++p1
, ':');
3205 ts
->error_desc
= xmalloc ((p2
- p1
) / 2 + 1);
3206 end
= hex2bin (p1
, ts
->error_desc
, (p2
- p1
) / 2);
3207 ts
->error_desc
[end
] = '\0';
3210 ts
->error_desc
= xstrdup ("");
3212 p
= unpack_varlen_hex (++p2
, &val
);
3213 ts
->stopping_tracepoint
= val
;
3214 ts
->stop_reason
= tracepoint_error
;
3216 else if (strncmp (p
, "tframes", p1
- p
) == 0)
3218 p
= unpack_varlen_hex (++p1
, &val
);
3219 ts
->traceframe_count
= val
;
3221 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
3223 p
= unpack_varlen_hex (++p1
, &val
);
3224 ts
->traceframes_created
= val
;
3226 else if (strncmp (p
, "tfree", p1
- p
) == 0)
3228 p
= unpack_varlen_hex (++p1
, &val
);
3229 ts
->buffer_free
= val
;
3231 else if (strncmp (p
, "tsize", p1
- p
) == 0)
3233 p
= unpack_varlen_hex (++p1
, &val
);
3234 ts
->buffer_size
= val
;
3238 /* Silently skip unknown optional info. */
3239 p_temp
= strchr (p1
+ 1, ';');
3243 /* Must be at the end. */
3249 /* Given a line of text defining a tracepoint or tracepoint action, parse
3250 it into an "uploaded tracepoint". */
3253 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
3257 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
;
3261 struct uploaded_tp
*utp
= NULL
;
3264 /* Both tracepoint and action definitions start with the same number
3265 and address sequence. */
3267 p
= unpack_varlen_hex (p
, &num
);
3268 p
++; /* skip a colon */
3269 p
= unpack_varlen_hex (p
, &addr
);
3270 p
++; /* skip a colon */
3273 enabled
= (*p
++ == 'E');
3274 p
++; /* skip a colon */
3275 p
= unpack_varlen_hex (p
, &step
);
3276 p
++; /* skip a colon */
3277 p
= unpack_varlen_hex (p
, &pass
);
3278 type
= bp_tracepoint
;
3280 /* Thumb through optional fields. */
3283 p
++; /* skip a colon */
3286 type
= bp_fast_tracepoint
;
3288 p
= unpack_varlen_hex (p
, &orig_size
);
3293 p
= unpack_varlen_hex (p
, &xlen
);
3294 p
++; /* skip a comma */
3295 cond
= (char *) xmalloc (2 * xlen
+ 1);
3296 strncpy (cond
, p
, 2 * xlen
);
3297 cond
[2 * xlen
] = '\0';
3301 warning ("Unrecognized char '%c' in tracepoint definition, skipping rest", *p
);
3303 utp
= get_uploaded_tp (num
, addr
, utpp
);
3305 utp
->enabled
= enabled
;
3310 else if (piece
== 'A')
3312 utp
= get_uploaded_tp (num
, addr
, utpp
);
3313 utp
->actions
[utp
->numactions
++] = xstrdup (p
);
3315 else if (piece
== 'S')
3317 utp
= get_uploaded_tp (num
, addr
, utpp
);
3318 utp
->step_actions
[utp
->num_step_actions
++] = xstrdup (p
);
3322 error ("Invalid tracepoint piece");
3326 /* Convert a textual description of a trace state variable into an
3330 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
3333 ULONGEST num
, initval
, builtin
;
3335 struct uploaded_tsv
*utsv
= NULL
;
3337 buf
= alloca (strlen (line
));
3340 p
= unpack_varlen_hex (p
, &num
);
3341 p
++; /* skip a colon */
3342 p
= unpack_varlen_hex (p
, &initval
);
3343 p
++; /* skip a colon */
3344 p
= unpack_varlen_hex (p
, &builtin
);
3345 p
++; /* skip a colon */
3346 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3349 utsv
= get_uploaded_tsv (num
, utsvp
);
3350 utsv
->initial_value
= initval
;
3351 utsv
->builtin
= builtin
;
3352 utsv
->name
= xstrdup (buf
);
3355 /* Close the trace file and generally clean up. */
3358 tfile_close (int quitting
)
3365 pid
= ptid_get_pid (inferior_ptid
);
3366 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff */
3367 exit_inferior_silent (pid
);
3372 xfree (trace_filename
);
3376 tfile_files_info (struct target_ops
*t
)
3378 /* (it would be useful to mention the name of the file) */
3379 printf_filtered ("Looking at a trace file.\n");
3382 /* The trace status for a file is that tracing can never be run. */
3385 tfile_get_trace_status (struct trace_status
*ts
)
3387 /* Other bits of trace status were collected as part of opening the
3388 trace files, so nothing to do here. */
3393 /* Given the position of a traceframe in the file, figure out what
3394 address the frame was collected at. This would normally be the
3395 value of a collected PC register, but if not available, we
3399 tfile_get_traceframe_address (off_t tframe_offset
)
3403 struct breakpoint
*tp
;
3404 off_t saved_offset
= cur_offset
;
3407 /* FIXME dig pc out of collected registers */
3409 /* Fall back to using tracepoint address. */
3410 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
3411 gotten
= read (trace_fd
, &tpnum
, 2);
3413 perror_with_name (trace_filename
);
3414 else if (gotten
< 2)
3415 error (_("Premature end of file while reading trace file"));
3417 tp
= get_tracepoint_by_number_on_target (tpnum
);
3418 /* FIXME this is a poor heuristic if multiple locations */
3420 addr
= tp
->loc
->address
;
3422 /* Restore our seek position. */
3423 cur_offset
= saved_offset
;
3424 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3428 /* Given a type of search and some parameters, scan the collection of
3429 traceframes in the file looking for a match. When found, return
3430 both the traceframe and tracepoint number, otherwise -1 for
3434 tfile_trace_find (enum trace_find_type type
, int num
,
3435 ULONGEST addr1
, ULONGEST addr2
, int *tpp
)
3438 int tfnum
= 0, found
= 0, gotten
;
3440 struct breakpoint
*tp
;
3441 off_t offset
, tframe_offset
;
3444 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
3445 offset
= trace_frames_offset
;
3448 tframe_offset
= offset
;
3449 gotten
= read (trace_fd
, &tpnum
, 2);
3451 perror_with_name (trace_filename
);
3452 else if (gotten
< 2)
3453 error (_("Premature end of file while reading trace file"));
3457 gotten
= read (trace_fd
, &data_size
, 4);
3459 perror_with_name (trace_filename
);
3460 else if (gotten
< 4)
3461 error (_("Premature end of file while reading trace file"));
3470 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3471 if (tfaddr
== addr1
)
3475 tp
= get_tracepoint (num
);
3476 if (tp
&& tpnum
== tp
->number_on_target
)
3480 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3481 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
3485 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3486 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
3490 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
3496 cur_offset
= offset
;
3497 cur_data_size
= data_size
;
3500 /* Skip past the traceframe's data. */
3501 lseek (trace_fd
, data_size
, SEEK_CUR
);
3502 offset
+= data_size
;
3503 /* Update our own count of traceframes. */
3506 /* Did not find what we were looking for. */
3512 /* Look for a block of saved registers in the traceframe, and get the
3513 requested register from it. */
3516 tfile_fetch_registers (struct target_ops
*ops
,
3517 struct regcache
*regcache
, int regno
)
3519 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3521 int i
, pos
, offset
, regn
, regsize
, gotten
;
3522 unsigned short mlen
;
3525 /* An uninitialized reg size says we're not going to be
3526 successful at getting register blocks. */
3527 if (!trace_regblock_size
)
3530 regs
= alloca (trace_regblock_size
);
3532 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3534 while (pos
< cur_data_size
)
3536 gotten
= read (trace_fd
, &block_type
, 1);
3538 perror_with_name (trace_filename
);
3539 else if (gotten
< 1)
3540 error (_("Premature end of file while reading trace file"));
3546 gotten
= read (trace_fd
, regs
, trace_regblock_size
);
3548 perror_with_name (trace_filename
);
3549 else if (gotten
< trace_regblock_size
)
3550 error (_("Premature end of file while reading trace file"));
3552 /* Assume the block is laid out in GDB register number order,
3553 each register with the size that it has in GDB. */
3555 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3557 regsize
= register_size (gdbarch
, regn
);
3558 /* Make sure we stay within block bounds. */
3559 if (offset
+ regsize
>= trace_regblock_size
)
3561 if (!regcache_valid_p (regcache
, regn
))
3565 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
3568 else if (regno
== -1)
3570 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
3577 lseek (trace_fd
, 8, SEEK_CUR
);
3578 gotten
= read (trace_fd
, &mlen
, 2);
3580 perror_with_name (trace_filename
);
3581 else if (gotten
< 2)
3582 error (_("Premature end of file while reading trace file"));
3583 lseek (trace_fd
, mlen
, SEEK_CUR
);
3584 pos
+= (8 + 2 + mlen
);
3587 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3591 error ("Unknown block type '%c' (0x%x) in trace frame",
3592 block_type
, block_type
);
3599 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
3600 const char *annex
, gdb_byte
*readbuf
,
3601 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
3606 unsigned short mlen
;
3608 /* We're only doing regular memory for now. */
3609 if (object
!= TARGET_OBJECT_MEMORY
)
3612 if (readbuf
== NULL
)
3613 error ("tfile_xfer_partial: trace file is read-only");
3615 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3617 while (pos
< cur_data_size
)
3619 gotten
= read (trace_fd
, &block_type
, 1);
3621 perror_with_name (trace_filename
);
3622 else if (gotten
< 1)
3623 error (_("Premature end of file while reading trace file"));
3628 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3629 pos
+= trace_regblock_size
;
3632 gotten
= read (trace_fd
, &maddr
, 8);
3634 perror_with_name (trace_filename
);
3635 else if (gotten
< 8)
3636 error (_("Premature end of file while reading trace file"));
3638 gotten
= read (trace_fd
, &mlen
, 2);
3640 perror_with_name (trace_filename
);
3641 else if (gotten
< 2)
3642 error (_("Premature end of file while reading trace file"));
3643 if (maddr
<= offset
&& (offset
+ len
) <= (maddr
+ mlen
))
3645 gotten
= read (trace_fd
, readbuf
, mlen
);
3647 perror_with_name (trace_filename
);
3648 else if (gotten
< mlen
)
3649 error (_("Premature end of file qwhile reading trace file"));
3653 lseek (trace_fd
, mlen
, SEEK_CUR
);
3654 pos
+= (8 + 2 + mlen
);
3657 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3661 error ("Unknown block type '%c' (0x%x) in traceframe",
3662 block_type
, block_type
);
3666 /* Indicate failure to find the requested memory block. */
3670 /* Iterate through the blocks of a trace frame, looking for a 'V'
3671 block with a matching tsv number. */
3674 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
3677 int pos
, vnum
, gotten
;
3678 unsigned short mlen
;
3680 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3682 while (pos
< cur_data_size
)
3684 gotten
= read (trace_fd
, &block_type
, 1);
3686 perror_with_name (trace_filename
);
3687 else if (gotten
< 1)
3688 error (_("Premature end of file while reading trace file"));
3693 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3694 pos
+= trace_regblock_size
;
3697 lseek (trace_fd
, 8, SEEK_CUR
);
3698 gotten
= read (trace_fd
, &mlen
, 2);
3700 perror_with_name (trace_filename
);
3701 else if (gotten
< 2)
3702 error (_("Premature end of file while reading trace file"));
3703 lseek (trace_fd
, mlen
, SEEK_CUR
);
3704 pos
+= (8 + 2 + mlen
);
3707 gotten
= read (trace_fd
, &vnum
, 4);
3709 perror_with_name (trace_filename
);
3710 else if (gotten
< 4)
3711 error (_("Premature end of file while reading trace file"));
3714 gotten
= read (trace_fd
, val
, 8);
3716 perror_with_name (trace_filename
);
3717 else if (gotten
< 8)
3718 error (_("Premature end of file while reading trace file"));
3721 lseek (trace_fd
, 8, SEEK_CUR
);
3725 error ("Unknown block type '%c' (0x%x) in traceframe",
3726 block_type
, block_type
);
3730 /* Didn't find anything. */
3735 tfile_has_memory (struct target_ops
*ops
)
3741 tfile_has_stack (struct target_ops
*ops
)
3747 tfile_has_registers (struct target_ops
*ops
)
3753 init_tfile_ops (void)
3755 tfile_ops
.to_shortname
= "tfile";
3756 tfile_ops
.to_longname
= "Local trace dump file";
3758 "Use a trace file as a target. Specify the filename of the trace file.";
3759 tfile_ops
.to_open
= tfile_open
;
3760 tfile_ops
.to_close
= tfile_close
;
3761 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
3762 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
3763 tfile_ops
.to_files_info
= tfile_files_info
;
3764 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
3765 tfile_ops
.to_trace_find
= tfile_trace_find
;
3766 tfile_ops
.to_get_trace_state_variable_value
= tfile_get_trace_state_variable_value
;
3767 /* core_stratum might seem more logical, but GDB doesn't like having
3768 more than one core_stratum vector. */
3769 tfile_ops
.to_stratum
= process_stratum
;
3770 tfile_ops
.to_has_memory
= tfile_has_memory
;
3771 tfile_ops
.to_has_stack
= tfile_has_stack
;
3772 tfile_ops
.to_has_registers
= tfile_has_registers
;
3773 tfile_ops
.to_magic
= OPS_MAGIC
;
3776 /* module initialization */
3778 _initialize_tracepoint (void)
3780 struct cmd_list_element
*c
;
3782 traceframe_number
= -1;
3783 tracepoint_number
= -1;
3785 if (tracepoint_list
.list
== NULL
)
3787 tracepoint_list
.listsize
= 128;
3788 tracepoint_list
.list
= xmalloc
3789 (tracepoint_list
.listsize
* sizeof (struct memrange
));
3791 if (tracepoint_list
.aexpr_list
== NULL
)
3793 tracepoint_list
.aexpr_listsize
= 128;
3794 tracepoint_list
.aexpr_list
= xmalloc
3795 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
3798 if (stepping_list
.list
== NULL
)
3800 stepping_list
.listsize
= 128;
3801 stepping_list
.list
= xmalloc
3802 (stepping_list
.listsize
* sizeof (struct memrange
));
3805 if (stepping_list
.aexpr_list
== NULL
)
3807 stepping_list
.aexpr_listsize
= 128;
3808 stepping_list
.aexpr_list
= xmalloc
3809 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
3812 add_info ("scope", scope_info
,
3813 _("List the variables local to a scope"));
3815 add_cmd ("tracepoints", class_trace
, NULL
,
3816 _("Tracing of program execution without stopping the program."),
3819 add_com ("tdump", class_trace
, trace_dump_command
,
3820 _("Print everything collected at the current tracepoint."));
3822 add_com ("tsave", class_trace
, trace_save_command
, _("\
3823 Save the trace data to a file.\n\
3824 Use the '-r' option to direct the target to save directly to the file,\n\
3825 using its own filesystem."));
3827 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
3828 Define a trace state variable.\n\
3829 Argument is a $-prefixed name, optionally followed\n\
3830 by '=' and an expression that sets the initial value\n\
3831 at the start of tracing."));
3832 set_cmd_completer (c
, expression_completer
);
3834 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
3835 Delete one or more trace state variables.\n\
3836 Arguments are the names of the variables to delete.\n\
3837 If no arguments are supplied, delete all variables."), &deletelist
);
3838 /* FIXME add a trace variable completer */
3840 add_info ("tvariables", tvariables_info
, _("\
3841 Status of trace state variables and their values.\n\
3844 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
3845 Select a trace frame;\n\
3846 No argument means forward by one frame; '-' means backward by one frame."),
3847 &tfindlist
, "tfind ", 1, &cmdlist
);
3849 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
3850 Select a trace frame whose PC is outside the given range (exclusive).\n\
3851 Usage: tfind outside addr1, addr2"),
3854 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
3855 Select a trace frame whose PC is in the given range (inclusive).\n\
3856 Usage: tfind range addr1,addr2"),
3859 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
3860 Select a trace frame by source line.\n\
3861 Argument can be a line number (with optional source file), \n\
3862 a function name, or '*' followed by an address.\n\
3863 Default argument is 'the next source line that was traced'."),
3866 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
3867 Select a trace frame by tracepoint number.\n\
3868 Default is the tracepoint for the current trace frame."),
3871 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
3872 Select a trace frame by PC.\n\
3873 Default is the current PC, or the PC of the current trace frame."),
3876 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
3877 Synonym for 'none'.\n\
3878 De-select any trace frame and resume 'live' debugging."),
3881 add_cmd ("none", class_trace
, trace_find_none_command
,
3882 _("De-select any trace frame and resume 'live' debugging."),
3885 add_cmd ("start", class_trace
, trace_find_start_command
,
3886 _("Select the first trace frame in the trace buffer."),
3889 add_com ("tstatus", class_trace
, trace_status_command
,
3890 _("Display the status of the current trace data collection."));
3892 add_com ("tstop", class_trace
, trace_stop_command
,
3893 _("Stop trace data collection."));
3895 add_com ("tstart", class_trace
, trace_start_command
,
3896 _("Start trace data collection."));
3898 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
3899 Ends a list of commands or actions.\n\
3900 Several GDB commands allow you to enter a list of commands or actions.\n\
3901 Entering \"end\" on a line by itself is the normal way to terminate\n\
3903 Note: the \"end\" command cannot be used at the gdb prompt."));
3905 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
3906 Specify single-stepping behavior at a tracepoint.\n\
3907 Argument is number of instructions to trace in single-step mode\n\
3908 following the tracepoint. This command is normally followed by\n\
3909 one or more \"collect\" commands, to specify what to collect\n\
3910 while single-stepping.\n\n\
3911 Note: this command can only be used in a tracepoint \"actions\" list."));
3913 add_com_alias ("ws", "while-stepping", class_alias
, 0);
3914 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
3916 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
3917 Specify one or more data items to be collected at a tracepoint.\n\
3918 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
3919 collect all data (variables, registers) referenced by that expression.\n\
3920 Also accepts the following special arguments:\n\
3921 $regs -- all registers.\n\
3922 $args -- all function arguments.\n\
3923 $locals -- all variables local to the block/function scope.\n\
3924 Note: this command can only be used in a tracepoint \"actions\" list."));
3926 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
3927 Specify one or more expressions to be evaluated at a tracepoint.\n\
3928 Accepts a comma-separated list of (one or more) expressions.\n\
3929 The result of each evaluation will be discarded.\n\
3930 Note: this command can only be used in a tracepoint \"actions\" list."));
3932 add_com ("actions", class_trace
, trace_actions_command
, _("\
3933 Specify the actions to be taken at a tracepoint.\n\
3934 Tracepoint actions may include collecting of specified data, \n\
3935 single-stepping, or enabling/disabling other tracepoints, \n\
3936 depending on target's capabilities."));
3938 default_collect
= xstrdup ("");
3939 add_setshow_string_cmd ("default-collect", class_trace
,
3940 &default_collect
, _("\
3941 Set the list of expressions to collect by default"), _("\
3942 Show the list of expressions to collect by default"), NULL
,
3944 &setlist
, &showlist
);
3946 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
3947 &disconnected_tracing
, _("\
3948 Set whether tracing continues after GDB disconnects."), _("\
3949 Show whether tracing continues after GDB disconnects."), _("\
3950 Use this to continue a tracing run even if GDB disconnects\n\
3951 or detaches from the target. You can reconnect later and look at\n\
3952 trace data collected in the meantime."),
3953 set_disconnected_tracing
,
3958 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
3959 &circular_trace_buffer
, _("\
3960 Set target's use of circular trace buffer."), _("\
3961 Show target's use of circular trace buffer."), _("\
3962 Use this to make the trace buffer into a circular buffer,\n\
3963 which will discard traceframes (oldest first) instead of filling\n\
3964 up and stopping the trace run."),
3965 set_circular_trace_buffer
,
3972 add_target (&tfile_ops
);