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. */
1750 /* Worker function for the various flavors of the tfind command. */
1752 tfind_1 (enum trace_find_type type
, int num
,
1753 ULONGEST addr1
, ULONGEST addr2
,
1756 int target_frameno
= -1, target_tracept
= -1;
1757 struct frame_id old_frame_id
;
1759 struct breakpoint
*tp
;
1761 old_frame_id
= get_frame_id (get_current_frame ());
1763 target_frameno
= target_trace_find (type
, num
, addr1
, addr2
,
1766 if (type
== tfind_number
1768 && target_frameno
== -1)
1770 /* We told the target to get out of tfind mode, and it did. */
1772 else if (target_frameno
== -1)
1774 /* A request for a non-existant trace frame has failed.
1775 Our response will be different, depending on FROM_TTY:
1777 If FROM_TTY is true, meaning that this command was
1778 typed interactively by the user, then give an error
1779 and DO NOT change the state of traceframe_number etc.
1781 However if FROM_TTY is false, meaning that we're either
1782 in a script, a loop, or a user-defined command, then
1783 DON'T give an error, but DO change the state of
1784 traceframe_number etc. to invalid.
1786 The rationalle is that if you typed the command, you
1787 might just have committed a typo or something, and you'd
1788 like to NOT lose your current debugging state. However
1789 if you're in a user-defined command or especially in a
1790 loop, then you need a way to detect that the command
1791 failed WITHOUT aborting. This allows you to write
1792 scripts that search thru the trace buffer until the end,
1793 and then continue on to do something else. */
1796 error (_("Target failed to find requested trace frame."));
1800 printf_filtered ("End of trace buffer.\n");
1801 #if 0 /* dubious now? */
1802 /* The following will not recurse, since it's
1804 trace_find_command ("-1", from_tty
);
1809 tp
= get_tracepoint_by_number_on_target (target_tracept
);
1811 reinit_frame_cache ();
1812 registers_changed ();
1813 target_dcache_invalidate ();
1814 set_traceframe_num (target_frameno
);
1815 set_tracepoint_num (tp
? tp
->number
: target_tracept
);
1816 if (target_frameno
== -1)
1817 set_traceframe_context (NULL
);
1819 set_traceframe_context (get_current_frame ());
1821 if (traceframe_number
>= 0)
1823 /* Use different branches for MI and CLI to make CLI messages
1825 if (ui_out_is_mi_like_p (uiout
))
1827 ui_out_field_string (uiout
, "found", "1");
1828 ui_out_field_int (uiout
, "tracepoint", tracepoint_number
);
1829 ui_out_field_int (uiout
, "traceframe", traceframe_number
);
1833 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1834 traceframe_number
, tracepoint_number
);
1839 if (ui_out_is_mi_like_p (uiout
))
1840 ui_out_field_string (uiout
, "found", "0");
1842 printf_unfiltered (_("No trace frame found"));
1845 /* If we're in nonstop mode and getting out of looking at trace
1846 frames, there won't be any current frame to go back to and
1849 && (has_stack_frames () || traceframe_number
>= 0))
1851 enum print_what print_what
;
1853 /* NOTE: in immitation of the step command, try to determine
1854 whether we have made a transition from one function to
1855 another. If so, we'll print the "stack frame" (ie. the new
1856 function and it's arguments) -- otherwise we'll just show the
1859 if (frame_id_eq (old_frame_id
,
1860 get_frame_id (get_current_frame ())))
1861 print_what
= SRC_LINE
;
1863 print_what
= SRC_AND_LOC
;
1865 print_stack_frame (get_selected_frame (NULL
), 1, print_what
);
1870 /* trace_find_command takes a trace frame number n,
1871 sends "QTFrame:<n>" to the target,
1872 and accepts a reply that may contain several optional pieces
1873 of information: a frame number, a tracepoint number, and an
1874 indication of whether this is a trap frame or a stepping frame.
1876 The minimal response is just "OK" (which indicates that the
1877 target does not give us a frame number or a tracepoint number).
1878 Instead of that, the target may send us a string containing
1880 F<hexnum> (gives the selected frame number)
1881 T<hexnum> (gives the selected tracepoint number)
1886 trace_find_command (char *args
, int from_tty
)
1887 { /* this should only be called with a numeric argument */
1890 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1891 error ("May not look at trace frames while trace is running.");
1893 if (args
== 0 || *args
== 0)
1894 { /* TFIND with no args means find NEXT trace frame. */
1895 if (traceframe_number
== -1)
1896 frameno
= 0; /* "next" is first one */
1898 frameno
= traceframe_number
+ 1;
1900 else if (0 == strcmp (args
, "-"))
1902 if (traceframe_number
== -1)
1903 error (_("not debugging trace buffer"));
1904 else if (from_tty
&& traceframe_number
== 0)
1905 error (_("already at start of trace buffer"));
1907 frameno
= traceframe_number
- 1;
1909 /* A hack to work around eval's need for fp to have been collected. */
1910 else if (0 == strcmp (args
, "-1"))
1913 frameno
= parse_and_eval_long (args
);
1916 error (_("invalid input (%d is less than zero)"), frameno
);
1918 tfind_1 (tfind_number
, frameno
, 0, 0, from_tty
);
1923 trace_find_end_command (char *args
, int from_tty
)
1925 trace_find_command ("-1", from_tty
);
1930 trace_find_none_command (char *args
, int from_tty
)
1932 trace_find_command ("-1", from_tty
);
1937 trace_find_start_command (char *args
, int from_tty
)
1939 trace_find_command ("0", from_tty
);
1942 /* tfind pc command */
1944 trace_find_pc_command (char *args
, int from_tty
)
1949 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1950 error ("May not look at trace frames while trace is running.");
1952 if (args
== 0 || *args
== 0)
1953 pc
= regcache_read_pc (get_current_regcache ());
1955 pc
= parse_and_eval_address (args
);
1957 tfind_1 (tfind_pc
, 0, pc
, 0, from_tty
);
1960 /* tfind tracepoint command */
1962 trace_find_tracepoint_command (char *args
, int from_tty
)
1965 struct breakpoint
*tp
;
1967 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
1968 error ("May not look at trace frames while trace is running.");
1970 if (args
== 0 || *args
== 0)
1972 if (tracepoint_number
== -1)
1973 error (_("No current tracepoint -- please supply an argument."));
1975 tdp
= tracepoint_number
; /* default is current TDP */
1978 tdp
= parse_and_eval_long (args
);
1980 /* If we have the tracepoint on hand, use the number that the
1981 target knows about (which may be different if we disconnected
1982 and reconnected). */
1983 tp
= get_tracepoint (tdp
);
1985 tdp
= tp
->number_on_target
;
1987 tfind_1 (tfind_tp
, tdp
, 0, 0, from_tty
);
1990 /* TFIND LINE command:
1992 This command will take a sourceline for argument, just like BREAK
1993 or TRACE (ie. anything that "decode_line_1" can handle).
1995 With no argument, this command will find the next trace frame
1996 corresponding to a source line OTHER THAN THE CURRENT ONE. */
1999 trace_find_line_command (char *args
, int from_tty
)
2001 static CORE_ADDR start_pc
, end_pc
;
2002 struct symtabs_and_lines sals
;
2003 struct symtab_and_line sal
;
2004 struct cleanup
*old_chain
;
2005 char startpc_str
[40], endpc_str
[40];
2007 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2008 error ("May not look at trace frames while trace is running.");
2010 if (args
== 0 || *args
== 0)
2012 sal
= find_pc_line (get_frame_pc (get_current_frame ()), 0);
2014 sals
.sals
= (struct symtab_and_line
*)
2015 xmalloc (sizeof (struct symtab_and_line
));
2020 sals
= decode_line_spec (args
, 1);
2024 old_chain
= make_cleanup (xfree
, sals
.sals
);
2025 if (sal
.symtab
== 0)
2027 printf_filtered ("TFIND: No line number information available");
2030 /* This is useful for "info line *0x7f34". If we can't
2031 tell the user about a source line, at least let them
2032 have the symbolic address. */
2033 printf_filtered (" for address ");
2035 print_address (get_current_arch (), sal
.pc
, gdb_stdout
);
2036 printf_filtered (";\n -- will attempt to find by PC. \n");
2040 printf_filtered (".\n");
2041 return; /* No line, no PC; what can we do? */
2044 else if (sal
.line
> 0
2045 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
2047 if (start_pc
== end_pc
)
2049 printf_filtered ("Line %d of \"%s\"",
2050 sal
.line
, sal
.symtab
->filename
);
2052 printf_filtered (" is at address ");
2053 print_address (get_current_arch (), start_pc
, gdb_stdout
);
2055 printf_filtered (" but contains no code.\n");
2056 sal
= find_pc_line (start_pc
, 0);
2058 && find_line_pc_range (sal
, &start_pc
, &end_pc
)
2059 && start_pc
!= end_pc
)
2060 printf_filtered ("Attempting to find line %d instead.\n",
2063 error (_("Cannot find a good line."));
2067 /* Is there any case in which we get here, and have an address
2068 which the user would want to see? If we have debugging
2069 symbols and no line numbers? */
2070 error (_("Line number %d is out of range for \"%s\"."),
2071 sal
.line
, sal
.symtab
->filename
);
2073 /* Find within range of stated line. */
2075 tfind_1 (tfind_range
, 0, start_pc
, end_pc
- 1, from_tty
);
2077 tfind_1 (tfind_outside
, 0, start_pc
, end_pc
- 1, from_tty
);
2078 do_cleanups (old_chain
);
2081 /* tfind range command */
2083 trace_find_range_command (char *args
, int from_tty
)
2085 static CORE_ADDR start
, stop
;
2086 char start_str
[40], stop_str
[40];
2089 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2090 error ("May not look at trace frames while trace is running.");
2092 if (args
== 0 || *args
== 0)
2093 { /* XXX FIXME: what should default behavior be? */
2094 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2098 if (0 != (tmp
= strchr (args
, ',')))
2100 *tmp
++ = '\0'; /* terminate start address */
2101 while (isspace ((int) *tmp
))
2103 start
= parse_and_eval_address (args
);
2104 stop
= parse_and_eval_address (tmp
);
2107 { /* no explicit end address? */
2108 start
= parse_and_eval_address (args
);
2109 stop
= start
+ 1; /* ??? */
2112 tfind_1 (tfind_range
, 0, start
, stop
, from_tty
);
2115 /* tfind outside command */
2117 trace_find_outside_command (char *args
, int from_tty
)
2119 CORE_ADDR start
, stop
;
2120 char start_str
[40], stop_str
[40];
2123 if (current_trace_status ()->running
&& !current_trace_status ()->from_file
)
2124 error ("May not look at trace frames while trace is running.");
2126 if (args
== 0 || *args
== 0)
2127 { /* XXX FIXME: what should default behavior be? */
2128 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2132 if (0 != (tmp
= strchr (args
, ',')))
2134 *tmp
++ = '\0'; /* terminate start address */
2135 while (isspace ((int) *tmp
))
2137 start
= parse_and_eval_address (args
);
2138 stop
= parse_and_eval_address (tmp
);
2141 { /* no explicit end address? */
2142 start
= parse_and_eval_address (args
);
2143 stop
= start
+ 1; /* ??? */
2146 tfind_1 (tfind_outside
, 0, start
, stop
, from_tty
);
2149 /* info scope command: list the locals for a scope. */
2151 scope_info (char *args
, int from_tty
)
2153 struct symtabs_and_lines sals
;
2155 struct minimal_symbol
*msym
;
2156 struct block
*block
;
2157 char **canonical
, *symname
, *save_args
= args
;
2158 struct dict_iterator iter
;
2160 struct gdbarch
*gdbarch
;
2163 if (args
== 0 || *args
== 0)
2164 error (_("requires an argument (function, line or *addr) to define a scope"));
2166 sals
= decode_line_1 (&args
, 1, NULL
, 0, &canonical
, NULL
);
2167 if (sals
.nelts
== 0)
2168 return; /* presumably decode_line_1 has already warned */
2170 /* Resolve line numbers to PC */
2171 resolve_sal_pc (&sals
.sals
[0]);
2172 block
= block_for_pc (sals
.sals
[0].pc
);
2176 QUIT
; /* allow user to bail out with ^C */
2177 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
2179 QUIT
; /* allow user to bail out with ^C */
2181 printf_filtered ("Scope for %s:\n", save_args
);
2184 symname
= SYMBOL_PRINT_NAME (sym
);
2185 if (symname
== NULL
|| *symname
== '\0')
2186 continue; /* probably botched, certainly useless */
2188 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
2190 printf_filtered ("Symbol %s is ", symname
);
2191 switch (SYMBOL_CLASS (sym
))
2194 case LOC_UNDEF
: /* messed up symbol? */
2195 printf_filtered ("a bogus symbol, class %d.\n",
2196 SYMBOL_CLASS (sym
));
2197 count
--; /* don't count this one */
2200 printf_filtered ("a constant with value %ld (0x%lx)",
2201 SYMBOL_VALUE (sym
), SYMBOL_VALUE (sym
));
2203 case LOC_CONST_BYTES
:
2204 printf_filtered ("constant bytes: ");
2205 if (SYMBOL_TYPE (sym
))
2206 for (j
= 0; j
< TYPE_LENGTH (SYMBOL_TYPE (sym
)); j
++)
2207 fprintf_filtered (gdb_stdout
, " %02x",
2208 (unsigned) SYMBOL_VALUE_BYTES (sym
)[j
]);
2211 printf_filtered ("in static storage at address ");
2212 printf_filtered ("%s", paddress (gdbarch
,
2213 SYMBOL_VALUE_ADDRESS (sym
)));
2216 /* GDBARCH is the architecture associated with the objfile
2217 the symbol is defined in; the target architecture may be
2218 different, and may provide additional registers. However,
2219 we do not know the target architecture at this point.
2220 We assume the objfile architecture will contain all the
2221 standard registers that occur in debug info in that
2223 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2225 if (SYMBOL_IS_ARGUMENT (sym
))
2226 printf_filtered ("an argument in register $%s",
2227 gdbarch_register_name (gdbarch
, regno
));
2229 printf_filtered ("a local variable in register $%s",
2230 gdbarch_register_name (gdbarch
, regno
));
2233 printf_filtered ("an argument at stack/frame offset %ld",
2234 SYMBOL_VALUE (sym
));
2237 printf_filtered ("a local variable at frame offset %ld",
2238 SYMBOL_VALUE (sym
));
2241 printf_filtered ("a reference argument at offset %ld",
2242 SYMBOL_VALUE (sym
));
2244 case LOC_REGPARM_ADDR
:
2245 /* Note comment at LOC_REGISTER. */
2246 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
2247 printf_filtered ("the address of an argument, in register $%s",
2248 gdbarch_register_name (gdbarch
, regno
));
2251 printf_filtered ("a typedef.\n");
2254 printf_filtered ("a label at address ");
2255 printf_filtered ("%s", paddress (gdbarch
,
2256 SYMBOL_VALUE_ADDRESS (sym
)));
2259 printf_filtered ("a function at address ");
2260 printf_filtered ("%s",
2261 paddress (gdbarch
, BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))));
2263 case LOC_UNRESOLVED
:
2264 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
),
2267 printf_filtered ("Unresolved Static");
2270 printf_filtered ("static storage at address ");
2271 printf_filtered ("%s",
2272 paddress (gdbarch
, SYMBOL_VALUE_ADDRESS (msym
)));
2275 case LOC_OPTIMIZED_OUT
:
2276 printf_filtered ("optimized out.\n");
2279 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, gdb_stdout
);
2282 if (SYMBOL_TYPE (sym
))
2283 printf_filtered (", length %d.\n",
2284 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym
))));
2286 if (BLOCK_FUNCTION (block
))
2289 block
= BLOCK_SUPERBLOCK (block
);
2292 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2296 /* worker function (cleanup) */
2298 replace_comma (void *data
)
2306 trace_dump_command (char *args
, int from_tty
)
2308 struct regcache
*regcache
;
2309 struct gdbarch
*gdbarch
;
2310 struct breakpoint
*t
;
2311 struct command_line
*action
;
2312 char *action_exp
, *next_comma
;
2313 struct cleanup
*old_cleanups
;
2314 int stepping_actions
= 0;
2315 int stepping_frame
= 0;
2316 struct bp_location
*loc
;
2318 if (tracepoint_number
== -1)
2320 warning (_("No current trace frame."));
2324 t
= get_tracepoint (tracepoint_number
);
2327 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2330 old_cleanups
= make_cleanup (null_cleanup
, NULL
);
2332 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2333 tracepoint_number
, traceframe_number
);
2335 /* The current frame is a trap frame if the frame PC is equal
2336 to the tracepoint PC. If not, then the current frame was
2337 collected during single-stepping. */
2339 regcache
= get_current_regcache ();
2340 gdbarch
= get_regcache_arch (regcache
);
2342 /* If the traceframe's address matches any of the tracepoint's
2343 locations, assume it is a direct hit rather than a while-stepping
2344 frame. (FIXME this is not reliable, should record each frame's
2347 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2348 if (loc
->address
== regcache_read_pc (regcache
))
2351 for (action
= t
->commands
->commands
; action
; action
= action
->next
)
2353 struct cmd_list_element
*cmd
;
2355 QUIT
; /* allow user to bail out with ^C */
2356 action_exp
= action
->line
;
2357 while (isspace ((int) *action_exp
))
2360 /* The collection actions to be done while stepping are
2361 bracketed by the commands "while-stepping" and "end". */
2363 if (*action_exp
== '#') /* comment line */
2366 cmd
= lookup_cmd (&action_exp
, cmdlist
, "", -1, 1);
2368 error (_("Bad action list item: %s"), action_exp
);
2370 if (cmd_cfunc_eq (cmd
, while_stepping_pseudocommand
))
2371 stepping_actions
= 1;
2372 else if (cmd_cfunc_eq (cmd
, end_actions_pseudocommand
))
2373 stepping_actions
= 0;
2374 else if (cmd_cfunc_eq (cmd
, collect_pseudocommand
))
2376 /* Display the collected data.
2377 For the trap frame, display only what was collected at
2378 the trap. Likewise for stepping frames, display only
2379 what was collected while stepping. This means that the
2380 two boolean variables, STEPPING_FRAME and
2381 STEPPING_ACTIONS should be equal. */
2382 if (stepping_frame
== stepping_actions
)
2385 { /* repeat over a comma-separated list */
2386 QUIT
; /* allow user to bail out with ^C */
2387 if (*action_exp
== ',')
2389 while (isspace ((int) *action_exp
))
2392 next_comma
= strchr (action_exp
, ',');
2394 if (0 == strncasecmp (action_exp
, "$reg", 4))
2395 registers_info (NULL
, from_tty
);
2396 else if (0 == strncasecmp (action_exp
, "$loc", 4))
2397 locals_info (NULL
, from_tty
);
2398 else if (0 == strncasecmp (action_exp
, "$arg", 4))
2399 args_info (NULL
, from_tty
);
2404 make_cleanup (replace_comma
, next_comma
);
2407 printf_filtered ("%s = ", action_exp
);
2408 output_command (action_exp
, from_tty
);
2409 printf_filtered ("\n");
2413 action_exp
= next_comma
;
2415 while (action_exp
&& *action_exp
== ',');
2419 discard_cleanups (old_cleanups
);
2422 extern int trace_regblock_size
;
2424 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2425 non-zero, the save is performed on the target, otherwise GDB obtains all
2426 trace data and saves it locally. */
2429 trace_save (const char *filename
, int target_does_save
)
2431 struct cleanup
*cleanup
;
2433 struct trace_status
*ts
= current_trace_status ();
2436 struct uploaded_tp
*uploaded_tps
= NULL
, *utp
;
2437 struct uploaded_tsv
*uploaded_tsvs
= NULL
, *utsv
;
2440 ULONGEST offset
= 0;
2441 #define MAX_TRACE_UPLOAD 2000
2442 gdb_byte buf
[MAX_TRACE_UPLOAD
];
2445 /* If the target is to save the data to a file on its own, then just
2446 send the command and be done with it. */
2447 if (target_does_save
)
2449 err
= target_save_trace_data (filename
);
2451 error (_("Target failed to save trace data to '%s'."),
2456 /* Get the trace status first before opening the file, so if the
2457 target is losing, we can get out without touching files. */
2458 status
= target_get_trace_status (ts
);
2460 pathname
= tilde_expand (filename
);
2461 cleanup
= make_cleanup (xfree
, pathname
);
2463 fp
= fopen (pathname
, "w");
2465 error (_("Unable to open file '%s' for saving trace data (%s)"),
2466 filename
, safe_strerror (errno
));
2467 make_cleanup_fclose (fp
);
2469 /* Write a file header, with a high-bit-set char to indicate a
2470 binary file, plus a hint as what this file is, and a version
2471 number in case of future needs. */
2472 written
= fwrite ("\x7fTRACE0\n", 8, 1, fp
);
2474 perror_with_name (pathname
);
2476 /* Write descriptive info. */
2478 /* Write out the size of a register block. */
2479 fprintf (fp
, "R %x\n", trace_regblock_size
);
2481 /* Write out status of the tracing run (aka "tstatus" info). */
2482 fprintf (fp
, "status %c;%s",
2483 (ts
->running
? '1' : '0'), stop_reason_names
[ts
->stop_reason
]);
2484 if (ts
->stop_reason
== tracepoint_error
)
2486 char *buf
= (char *) alloca (strlen (ts
->error_desc
) * 2 + 1);
2487 bin2hex ((gdb_byte
*) ts
->error_desc
, buf
, 0);
2488 fprintf (fp
, ":%s", buf
);
2490 fprintf (fp
, ":%x", ts
->stopping_tracepoint
);
2491 if (ts
->traceframe_count
>= 0)
2492 fprintf (fp
, ";tframes:%x", ts
->traceframe_count
);
2493 if (ts
->traceframes_created
>= 0)
2494 fprintf (fp
, ";tcreated:%x", ts
->traceframes_created
);
2495 if (ts
->buffer_free
>= 0)
2496 fprintf (fp
, ";tfree:%x", ts
->buffer_free
);
2497 if (ts
->buffer_size
>= 0)
2498 fprintf (fp
, ";tsize:%x", ts
->buffer_size
);
2501 /* Note that we want to upload tracepoints and save those, rather
2502 than simply writing out the local ones, because the user may have
2503 changed tracepoints in GDB in preparation for a future tracing
2504 run, or maybe just mass-deleted all types of breakpoints as part
2505 of cleaning up. So as not to contaminate the session, leave the
2506 data in its uploaded form, don't make into real tracepoints. */
2508 /* Get trace state variables first, they may be checked when parsing
2509 uploaded commands. */
2511 target_upload_trace_state_variables (&uploaded_tsvs
);
2513 for (utsv
= uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2519 buf
= (char *) xmalloc (strlen (utsv
->name
) * 2 + 1);
2520 bin2hex ((gdb_byte
*) (utsv
->name
), buf
, 0);
2523 fprintf (fp
, "tsv %x:%s:%x:%s\n",
2524 utsv
->number
, phex_nz (utsv
->initial_value
, 8),
2525 utsv
->builtin
, buf
);
2531 free_uploaded_tsvs (&uploaded_tsvs
);
2533 target_upload_tracepoints (&uploaded_tps
);
2535 for (utp
= uploaded_tps
; utp
; utp
= utp
->next
)
2537 fprintf (fp
, "tp T%x:%s:%c:%x:%x",
2538 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2539 (utp
->enabled
? 'E' : 'D'), utp
->step
, utp
->pass
);
2540 if (utp
->type
== bp_fast_tracepoint
)
2541 fprintf (fp
, ":F%x", utp
->orig_size
);
2543 fprintf (fp
, ":X%x,%s", (unsigned int) strlen (utp
->cond
) / 2,
2546 for (a
= 0; a
< utp
->numactions
; ++a
)
2547 fprintf (fp
, "tp A%x:%s:%s\n",
2548 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2550 for (a
= 0; a
< utp
->num_step_actions
; ++a
)
2551 fprintf (fp
, "tp S%x:%s:%s\n",
2552 utp
->number
, phex_nz (utp
->addr
, sizeof (utp
->addr
)),
2553 utp
->step_actions
[a
]);
2556 free_uploaded_tps (&uploaded_tps
);
2558 /* Mark the end of the definition section. */
2561 /* Get and write the trace data proper. We ask for big blocks, in
2562 the hopes of efficiency, but will take less if the target has
2563 packet size limitations or some such. */
2566 gotten
= target_get_raw_trace_data (buf
, offset
, MAX_TRACE_UPLOAD
);
2568 error (_("Failure to get requested trace buffer data"));
2569 /* No more data is forthcoming, we're done. */
2572 written
= fwrite (buf
, gotten
, 1, fp
);
2573 if (written
< gotten
)
2574 perror_with_name (pathname
);
2578 /* Mark the end of trace data. */
2579 written
= fwrite (&gotten
, 4, 1, fp
);
2581 perror_with_name (pathname
);
2583 do_cleanups (cleanup
);
2587 trace_save_command (char *args
, int from_tty
)
2589 int target_does_save
= 0;
2591 char *filename
= NULL
;
2592 struct cleanup
*back_to
;
2595 error_no_arg (_("file in which to save trace data"));
2597 argv
= gdb_buildargv (args
);
2598 back_to
= make_cleanup_freeargv (argv
);
2600 for (; *argv
; ++argv
)
2602 if (strcmp (*argv
, "-r") == 0)
2603 target_does_save
= 1;
2604 else if (**argv
== '-')
2605 error (_("unknown option `%s'"), *argv
);
2611 error_no_arg (_("file in which to save trace data"));
2613 trace_save (filename
, target_does_save
);
2616 printf_filtered (_("Trace data saved to file '%s'.\n"), args
);
2618 do_cleanups (back_to
);
2621 /* Tell the target what to do with an ongoing tracing run if GDB
2622 disconnects for some reason. */
2625 send_disconnected_tracing_value (int value
)
2627 target_set_disconnected_tracing (value
);
2631 set_disconnected_tracing (char *args
, int from_tty
,
2632 struct cmd_list_element
*c
)
2634 send_disconnected_tracing_value (disconnected_tracing
);
2638 set_circular_trace_buffer (char *args
, int from_tty
,
2639 struct cmd_list_element
*c
)
2641 target_set_circular_trace_buffer (circular_trace_buffer
);
2644 /* Convert the memory pointed to by mem into hex, placing result in buf.
2645 * Return a pointer to the last char put in buf (null)
2646 * "stolen" from sparc-stub.c
2649 static const char hexchars
[] = "0123456789abcdef";
2652 mem2hex (gdb_byte
*mem
, char *buf
, int count
)
2660 *buf
++ = hexchars
[ch
>> 4];
2661 *buf
++ = hexchars
[ch
& 0xf];
2670 get_traceframe_number (void)
2672 return traceframe_number
;
2675 /* Make the traceframe NUM be the current trace frame. Does nothing
2676 if NUM is already current. */
2679 set_traceframe_number (int num
)
2683 if (traceframe_number
== num
)
2685 /* Nothing to do. */
2689 newnum
= target_trace_find (tfind_number
, num
, 0, 0, NULL
);
2692 warning (_("could not change traceframe"));
2694 traceframe_number
= newnum
;
2696 /* Changing the traceframe changes our view of registers and of the
2698 registers_changed ();
2701 /* A cleanup used when switching away and back from tfind mode. */
2703 struct current_traceframe_cleanup
2705 /* The traceframe we were inspecting. */
2706 int traceframe_number
;
2710 do_restore_current_traceframe_cleanup (void *arg
)
2712 struct current_traceframe_cleanup
*old
= arg
;
2714 set_traceframe_number (old
->traceframe_number
);
2718 restore_current_traceframe_cleanup_dtor (void *arg
)
2720 struct current_traceframe_cleanup
*old
= arg
;
2726 make_cleanup_restore_current_traceframe (void)
2728 struct current_traceframe_cleanup
*old
;
2730 old
= xmalloc (sizeof (struct current_traceframe_cleanup
));
2731 old
->traceframe_number
= traceframe_number
;
2733 return make_cleanup_dtor (do_restore_current_traceframe_cleanup
, old
,
2734 restore_current_traceframe_cleanup_dtor
);
2737 /* Given a number and address, return an uploaded tracepoint with that
2738 number, creating if necessary. */
2740 struct uploaded_tp
*
2741 get_uploaded_tp (int num
, ULONGEST addr
, struct uploaded_tp
**utpp
)
2743 struct uploaded_tp
*utp
;
2745 for (utp
= *utpp
; utp
; utp
= utp
->next
)
2746 if (utp
->number
== num
&& utp
->addr
== addr
)
2748 utp
= (struct uploaded_tp
*) xmalloc (sizeof (struct uploaded_tp
));
2749 memset (utp
, 0, sizeof (struct uploaded_tp
));
2758 free_uploaded_tps (struct uploaded_tp
**utpp
)
2760 struct uploaded_tp
*next_one
;
2764 next_one
= (*utpp
)->next
;
2770 /* Given a number and address, return an uploaded tracepoint with that
2771 number, creating if necessary. */
2773 struct uploaded_tsv
*
2774 get_uploaded_tsv (int num
, struct uploaded_tsv
**utsvp
)
2776 struct uploaded_tsv
*utsv
;
2778 for (utsv
= *utsvp
; utsv
; utsv
= utsv
->next
)
2779 if (utsv
->number
== num
)
2781 utsv
= (struct uploaded_tsv
*) xmalloc (sizeof (struct uploaded_tsv
));
2782 memset (utsv
, 0, sizeof (struct uploaded_tsv
));
2784 utsv
->next
= *utsvp
;
2790 free_uploaded_tsvs (struct uploaded_tsv
**utsvp
)
2792 struct uploaded_tsv
*next_one
;
2796 next_one
= (*utsvp
)->next
;
2802 /* Look for an existing tracepoint that seems similar enough to the
2803 uploaded one. Enablement isn't compared, because the user can
2804 toggle that freely, and may have done so in anticipation of the
2808 find_matching_tracepoint (struct uploaded_tp
*utp
)
2810 VEC(breakpoint_p
) *tp_vec
= all_tracepoints ();
2812 struct breakpoint
*t
;
2813 struct bp_location
*loc
;
2815 for (ix
= 0; VEC_iterate (breakpoint_p
, tp_vec
, ix
, t
); ix
++)
2817 if (t
->type
== utp
->type
2818 && t
->step_count
== utp
->step
2819 && t
->pass_count
== utp
->pass
2820 /* FIXME also test conditionals and actions */
2823 /* Scan the locations for an address match. */
2824 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
2826 if (loc
->address
== utp
->addr
)
2834 /* Given a list of tracepoints uploaded from a target, attempt to
2835 match them up with existing tracepoints, and create new ones if not
2839 merge_uploaded_tracepoints (struct uploaded_tp
**uploaded_tps
)
2841 struct uploaded_tp
*utp
;
2842 struct breakpoint
*t
;
2844 /* Look for GDB tracepoints that match up with our uploaded versions. */
2845 for (utp
= *uploaded_tps
; utp
; utp
= utp
->next
)
2847 t
= find_matching_tracepoint (utp
);
2849 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
2850 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2853 t
= create_tracepoint_from_upload (utp
);
2855 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
2856 t
->number
, utp
->number
, paddress (get_current_arch (), utp
->addr
));
2858 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
2859 utp
->number
, paddress (get_current_arch (), utp
->addr
));
2861 /* Whether found or created, record the number used by the
2862 target, to help with mapping target tracepoints back to their
2863 counterparts here. */
2865 t
->number_on_target
= utp
->number
;
2868 free_uploaded_tps (uploaded_tps
);
2871 /* Trace state variables don't have much to identify them beyond their
2872 name, so just use that to detect matches. */
2874 struct trace_state_variable
*
2875 find_matching_tsv (struct uploaded_tsv
*utsv
)
2880 return find_trace_state_variable (utsv
->name
);
2883 struct trace_state_variable
*
2884 create_tsv_from_upload (struct uploaded_tsv
*utsv
)
2886 const char *namebase
;
2889 struct trace_state_variable
*tsv
;
2893 namebase
= utsv
->name
;
2894 sprintf (buf
, "%s", namebase
);
2899 sprintf (buf
, "%s_%d", namebase
, try_num
++);
2902 /* Fish for a name that is not in use. */
2903 /* (should check against all internal vars?) */
2904 while (find_trace_state_variable (buf
))
2905 sprintf (buf
, "%s_%d", namebase
, try_num
++);
2907 /* We have an available name, create the variable. */
2908 tsv
= create_trace_state_variable (xstrdup (buf
));
2909 tsv
->initial_value
= utsv
->initial_value
;
2910 tsv
->builtin
= utsv
->builtin
;
2915 /* Given a list of uploaded trace state variables, try to match them
2916 up with existing variables, or create additional ones. */
2919 merge_uploaded_trace_state_variables (struct uploaded_tsv
**uploaded_tsvs
)
2922 struct uploaded_tsv
*utsv
;
2923 struct trace_state_variable
*tsv
;
2926 /* Most likely some numbers will have to be reassigned as part of
2927 the merge, so clear them all in anticipation. */
2928 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2931 for (utsv
= *uploaded_tsvs
; utsv
; utsv
= utsv
->next
)
2933 tsv
= find_matching_tsv (utsv
);
2935 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
2936 tsv
->name
, utsv
->number
);
2939 tsv
= create_tsv_from_upload (utsv
);
2940 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
2941 tsv
->name
, utsv
->number
);
2943 /* Give precedence to numberings that come from the target. */
2945 tsv
->number
= utsv
->number
;
2948 /* Renumber everything that didn't get a target-assigned number. */
2950 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2951 if (tsv
->number
> highest
)
2952 highest
= tsv
->number
;
2955 for (ix
= 0; VEC_iterate (tsv_s
, tvariables
, ix
, tsv
); ++ix
)
2956 if (tsv
->number
== 0)
2957 tsv
->number
= highest
++;
2959 free_uploaded_tsvs (uploaded_tsvs
);
2962 /* target tfile command */
2964 struct target_ops tfile_ops
;
2966 /* Fill in tfile_ops with its defined operations and properties. */
2968 #define TRACE_HEADER_SIZE 8
2970 char *trace_filename
;
2972 off_t trace_frames_offset
;
2975 int trace_regblock_size
;
2977 static void tfile_interp_line (char *line
,
2978 struct uploaded_tp
**utpp
,
2979 struct uploaded_tsv
**utsvp
);
2982 tfile_open (char *filename
, int from_tty
)
2985 struct cleanup
*old_chain
;
2988 char header
[TRACE_HEADER_SIZE
];
2989 char linebuf
[1000]; /* should be max remote packet size or so */
2991 int bytes
, i
, gotten
;
2992 struct trace_status
*ts
;
2993 struct uploaded_tp
*uploaded_tps
= NULL
;
2994 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
2996 target_preopen (from_tty
);
2998 error (_("No trace file specified."));
3000 filename
= tilde_expand (filename
);
3001 if (!IS_ABSOLUTE_PATH(filename
))
3003 temp
= concat (current_directory
, "/", filename
, (char *)NULL
);
3008 old_chain
= make_cleanup (xfree
, filename
);
3010 flags
= O_BINARY
| O_LARGEFILE
;
3012 scratch_chan
= open (filename
, flags
, 0);
3013 if (scratch_chan
< 0)
3014 perror_with_name (filename
);
3016 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3018 discard_cleanups (old_chain
); /* Don't free filename any more */
3019 unpush_target (&tfile_ops
);
3021 push_target (&tfile_ops
);
3023 trace_filename
= xstrdup (filename
);
3024 trace_fd
= scratch_chan
;
3027 /* Read the file header and test for validity. */
3028 gotten
= read (trace_fd
, &header
, TRACE_HEADER_SIZE
);
3030 perror_with_name (trace_filename
);
3031 else if (gotten
< TRACE_HEADER_SIZE
)
3032 error (_("Premature end of file while reading trace file"));
3034 bytes
+= TRACE_HEADER_SIZE
;
3035 if (!(header
[0] == 0x7f
3036 && (strncmp (header
+ 1, "TRACE0\n", 7) == 0)))
3037 error (_("File is not a valid trace file."));
3039 trace_regblock_size
= 0;
3040 ts
= current_trace_status ();
3041 /* We know we're working with a file. */
3043 /* Set defaults in case there is no status line. */
3044 ts
->running_known
= 0;
3045 ts
->stop_reason
= trace_stop_reason_unknown
;
3046 ts
->traceframe_count
= -1;
3047 ts
->buffer_free
= 0;
3049 /* Read through a section of newline-terminated lines that
3050 define things like tracepoints. */
3054 gotten
= read (trace_fd
, &byte
, 1);
3056 perror_with_name (trace_filename
);
3057 else if (gotten
< 1)
3058 error (_("Premature end of file while reading trace file"));
3063 /* Empty line marks end of the definition section. */
3068 tfile_interp_line (linebuf
, &uploaded_tps
, &uploaded_tsvs
);
3071 linebuf
[i
++] = byte
;
3073 error (_("Excessively long lines in trace file"));
3076 /* Add the file's tracepoints and variables into the current mix. */
3078 /* Get trace state variables first, they may be checked when parsing
3079 uploaded commands. */
3080 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3082 merge_uploaded_tracepoints (&uploaded_tps
);
3084 /* Record the starting offset of the binary trace data. */
3085 trace_frames_offset
= bytes
;
3087 /* If we don't have a blocksize, we can't interpret the
3089 if (trace_regblock_size
== 0)
3090 error (_("No register block size recorded in trace file"));
3091 if (ts
->traceframe_count
<= 0)
3093 warning ("No traceframes present in this file.");
3097 #define TFILE_PID (1)
3098 inferior_appeared (current_inferior (), TFILE_PID
);
3099 inferior_ptid
= pid_to_ptid (TFILE_PID
);
3100 add_thread_silent (inferior_ptid
);
3102 post_create_inferior (&tfile_ops
, from_tty
);
3105 /* FIXME this will get defined in MI patch submission */
3106 tfind_1 (tfind_number
, 0, 0, 0, 0);
3110 /* Interpret the given line from the definitions part of the trace
3114 tfile_interp_line (char *line
,
3115 struct uploaded_tp
**utpp
, struct uploaded_tsv
**utsvp
)
3119 if (strncmp (p
, "R ", strlen ("R ")) == 0)
3122 trace_regblock_size
= strtol (p
, &p
, 16);
3124 else if (strncmp (p
, "status ", strlen ("status ")) == 0)
3126 p
+= strlen ("status ");
3127 parse_trace_status (p
, current_trace_status ());
3129 else if (strncmp (p
, "tp ", strlen ("tp ")) == 0)
3131 p
+= strlen ("tp ");
3132 parse_tracepoint_definition (p
, utpp
);
3134 else if (strncmp (p
, "tsv ", strlen ("tsv ")) == 0)
3136 p
+= strlen ("tsv ");
3137 parse_tsv_definition (p
, utsvp
);
3140 warning ("Ignoring trace file definition \"%s\"", line
);
3143 /* Parse the part of trace status syntax that is shared between
3144 the remote protocol and the trace file reader. */
3146 extern char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
3149 parse_trace_status (char *line
, struct trace_status
*ts
)
3151 char *p
= line
, *p1
, *p2
, *p_temp
;
3154 ts
->running_known
= 1;
3155 ts
->running
= (*p
++ == '1');
3156 ts
->stop_reason
= trace_stop_reason_unknown
;
3157 xfree (ts
->error_desc
);
3158 ts
->error_desc
= NULL
;
3159 ts
->traceframe_count
= -1;
3160 ts
->traceframes_created
= -1;
3161 ts
->buffer_free
= -1;
3162 ts
->buffer_size
= -1;
3166 p1
= strchr (p
, ':');
3168 error (_("Malformed trace status, at %s\n\
3169 Status line: '%s'\n"), p
, line
);
3170 if (strncmp (p
, stop_reason_names
[trace_buffer_full
], p1
- p
) == 0)
3172 p
= unpack_varlen_hex (++p1
, &val
);
3173 ts
->stop_reason
= trace_buffer_full
;
3175 else if (strncmp (p
, stop_reason_names
[trace_never_run
], p1
- p
) == 0)
3177 p
= unpack_varlen_hex (++p1
, &val
);
3178 ts
->stop_reason
= trace_never_run
;
3180 else if (strncmp (p
, stop_reason_names
[tracepoint_passcount
], p1
- p
) == 0)
3182 p
= unpack_varlen_hex (++p1
, &val
);
3183 ts
->stop_reason
= tracepoint_passcount
;
3184 ts
->stopping_tracepoint
= val
;
3186 else if (strncmp (p
, stop_reason_names
[tstop_command
], p1
- p
) == 0)
3188 p
= unpack_varlen_hex (++p1
, &val
);
3189 ts
->stop_reason
= tstop_command
;
3191 else if (strncmp (p
, stop_reason_names
[tracepoint_error
], p1
- p
) == 0)
3193 p2
= strchr (++p1
, ':');
3198 ts
->error_desc
= xmalloc ((p2
- p1
) / 2 + 1);
3199 end
= hex2bin (p1
, ts
->error_desc
, (p2
- p1
) / 2);
3200 ts
->error_desc
[end
] = '\0';
3203 ts
->error_desc
= xstrdup ("");
3205 p
= unpack_varlen_hex (++p2
, &val
);
3206 ts
->stopping_tracepoint
= val
;
3207 ts
->stop_reason
= tracepoint_error
;
3209 else if (strncmp (p
, "tframes", p1
- p
) == 0)
3211 p
= unpack_varlen_hex (++p1
, &val
);
3212 ts
->traceframe_count
= val
;
3214 else if (strncmp (p
, "tcreated", p1
- p
) == 0)
3216 p
= unpack_varlen_hex (++p1
, &val
);
3217 ts
->traceframes_created
= val
;
3219 else if (strncmp (p
, "tfree", p1
- p
) == 0)
3221 p
= unpack_varlen_hex (++p1
, &val
);
3222 ts
->buffer_free
= val
;
3224 else if (strncmp (p
, "tsize", p1
- p
) == 0)
3226 p
= unpack_varlen_hex (++p1
, &val
);
3227 ts
->buffer_size
= val
;
3231 /* Silently skip unknown optional info. */
3232 p_temp
= strchr (p1
+ 1, ';');
3236 /* Must be at the end. */
3242 /* Given a line of text defining a tracepoint or tracepoint action, parse
3243 it into an "uploaded tracepoint". */
3246 parse_tracepoint_definition (char *line
, struct uploaded_tp
**utpp
)
3250 ULONGEST num
, addr
, step
, pass
, orig_size
, xlen
;
3254 struct uploaded_tp
*utp
= NULL
;
3257 /* Both tracepoint and action definitions start with the same number
3258 and address sequence. */
3260 p
= unpack_varlen_hex (p
, &num
);
3261 p
++; /* skip a colon */
3262 p
= unpack_varlen_hex (p
, &addr
);
3263 p
++; /* skip a colon */
3266 enabled
= (*p
++ == 'E');
3267 p
++; /* skip a colon */
3268 p
= unpack_varlen_hex (p
, &step
);
3269 p
++; /* skip a colon */
3270 p
= unpack_varlen_hex (p
, &pass
);
3271 type
= bp_tracepoint
;
3273 /* Thumb through optional fields. */
3276 p
++; /* skip a colon */
3279 type
= bp_fast_tracepoint
;
3281 p
= unpack_varlen_hex (p
, &orig_size
);
3286 p
= unpack_varlen_hex (p
, &xlen
);
3287 p
++; /* skip a comma */
3288 cond
= (char *) xmalloc (2 * xlen
+ 1);
3289 strncpy (cond
, p
, 2 * xlen
);
3290 cond
[2 * xlen
] = '\0';
3294 warning ("Unrecognized char '%c' in tracepoint definition, skipping rest", *p
);
3296 utp
= get_uploaded_tp (num
, addr
, utpp
);
3298 utp
->enabled
= enabled
;
3303 else if (piece
== 'A')
3305 utp
= get_uploaded_tp (num
, addr
, utpp
);
3306 utp
->actions
[utp
->numactions
++] = xstrdup (p
);
3308 else if (piece
== 'S')
3310 utp
= get_uploaded_tp (num
, addr
, utpp
);
3311 utp
->step_actions
[utp
->num_step_actions
++] = xstrdup (p
);
3315 error ("Invalid tracepoint piece");
3319 /* Convert a textual description of a trace state variable into an
3323 parse_tsv_definition (char *line
, struct uploaded_tsv
**utsvp
)
3326 ULONGEST num
, initval
, builtin
;
3328 struct uploaded_tsv
*utsv
= NULL
;
3330 buf
= alloca (strlen (line
));
3333 p
= unpack_varlen_hex (p
, &num
);
3334 p
++; /* skip a colon */
3335 p
= unpack_varlen_hex (p
, &initval
);
3336 p
++; /* skip a colon */
3337 p
= unpack_varlen_hex (p
, &builtin
);
3338 p
++; /* skip a colon */
3339 end
= hex2bin (p
, (gdb_byte
*) buf
, strlen (p
) / 2);
3342 utsv
= get_uploaded_tsv (num
, utsvp
);
3343 utsv
->initial_value
= initval
;
3344 utsv
->builtin
= builtin
;
3345 utsv
->name
= xstrdup (buf
);
3348 /* Close the trace file and generally clean up. */
3351 tfile_close (int quitting
)
3358 pid
= ptid_get_pid (inferior_ptid
);
3359 inferior_ptid
= null_ptid
; /* Avoid confusion from thread stuff */
3360 exit_inferior_silent (pid
);
3365 xfree (trace_filename
);
3369 tfile_files_info (struct target_ops
*t
)
3371 /* (it would be useful to mention the name of the file) */
3372 printf_filtered ("Looking at a trace file.\n");
3375 /* The trace status for a file is that tracing can never be run. */
3378 tfile_get_trace_status (struct trace_status
*ts
)
3380 /* Other bits of trace status were collected as part of opening the
3381 trace files, so nothing to do here. */
3386 /* Given the position of a traceframe in the file, figure out what
3387 address the frame was collected at. This would normally be the
3388 value of a collected PC register, but if not available, we
3392 tfile_get_traceframe_address (off_t tframe_offset
)
3396 struct breakpoint
*tp
;
3397 off_t saved_offset
= cur_offset
;
3400 /* FIXME dig pc out of collected registers */
3402 /* Fall back to using tracepoint address. */
3403 lseek (trace_fd
, tframe_offset
, SEEK_SET
);
3404 gotten
= read (trace_fd
, &tpnum
, 2);
3406 perror_with_name (trace_filename
);
3407 else if (gotten
< 2)
3408 error (_("Premature end of file while reading trace file"));
3410 tp
= get_tracepoint_by_number_on_target (tpnum
);
3411 /* FIXME this is a poor heuristic if multiple locations */
3413 addr
= tp
->loc
->address
;
3415 /* Restore our seek position. */
3416 cur_offset
= saved_offset
;
3417 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3421 /* Given a type of search and some parameters, scan the collection of
3422 traceframes in the file looking for a match. When found, return
3423 both the traceframe and tracepoint number, otherwise -1 for
3427 tfile_trace_find (enum trace_find_type type
, int num
,
3428 ULONGEST addr1
, ULONGEST addr2
, int *tpp
)
3431 int tfnum
= 0, found
= 0, gotten
;
3433 struct breakpoint
*tp
;
3434 off_t offset
, tframe_offset
;
3437 lseek (trace_fd
, trace_frames_offset
, SEEK_SET
);
3438 offset
= trace_frames_offset
;
3441 tframe_offset
= offset
;
3442 gotten
= read (trace_fd
, &tpnum
, 2);
3444 perror_with_name (trace_filename
);
3445 else if (gotten
< 2)
3446 error (_("Premature end of file while reading trace file"));
3450 gotten
= read (trace_fd
, &data_size
, 4);
3452 perror_with_name (trace_filename
);
3453 else if (gotten
< 4)
3454 error (_("Premature end of file while reading trace file"));
3463 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3464 if (tfaddr
== addr1
)
3468 tp
= get_tracepoint (num
);
3469 if (tp
&& tpnum
== tp
->number_on_target
)
3473 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3474 if (addr1
<= tfaddr
&& tfaddr
<= addr2
)
3478 tfaddr
= tfile_get_traceframe_address (tframe_offset
);
3479 if (!(addr1
<= tfaddr
&& tfaddr
<= addr2
))
3483 internal_error (__FILE__
, __LINE__
, _("unknown tfind type"));
3489 cur_offset
= offset
;
3490 cur_data_size
= data_size
;
3493 /* Skip past the traceframe's data. */
3494 lseek (trace_fd
, data_size
, SEEK_CUR
);
3495 offset
+= data_size
;
3496 /* Update our own count of traceframes. */
3499 /* Did not find what we were looking for. */
3505 /* Look for a block of saved registers in the traceframe, and get the
3506 requested register from it. */
3509 tfile_fetch_registers (struct target_ops
*ops
,
3510 struct regcache
*regcache
, int regno
)
3512 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3514 int i
, pos
, offset
, regn
, regsize
, gotten
;
3515 unsigned short mlen
;
3518 /* An uninitialized reg size says we're not going to be
3519 successful at getting register blocks. */
3520 if (!trace_regblock_size
)
3523 regs
= alloca (trace_regblock_size
);
3525 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3527 while (pos
< cur_data_size
)
3529 gotten
= read (trace_fd
, &block_type
, 1);
3531 perror_with_name (trace_filename
);
3532 else if (gotten
< 1)
3533 error (_("Premature end of file while reading trace file"));
3539 gotten
= read (trace_fd
, regs
, trace_regblock_size
);
3541 perror_with_name (trace_filename
);
3542 else if (gotten
< trace_regblock_size
)
3543 error (_("Premature end of file while reading trace file"));
3545 /* Assume the block is laid out in GDB register number order,
3546 each register with the size that it has in GDB. */
3548 for (regn
= 0; regn
< gdbarch_num_regs (gdbarch
); regn
++)
3550 regsize
= register_size (gdbarch
, regn
);
3551 /* Make sure we stay within block bounds. */
3552 if (offset
+ regsize
>= trace_regblock_size
)
3554 if (!regcache_valid_p (regcache
, regn
))
3558 regcache_raw_supply (regcache
, regno
, regs
+ offset
);
3561 else if (regno
== -1)
3563 regcache_raw_supply (regcache
, regn
, regs
+ offset
);
3570 lseek (trace_fd
, 8, SEEK_CUR
);
3571 gotten
= read (trace_fd
, &mlen
, 2);
3573 perror_with_name (trace_filename
);
3574 else if (gotten
< 2)
3575 error (_("Premature end of file while reading trace file"));
3576 lseek (trace_fd
, mlen
, SEEK_CUR
);
3577 pos
+= (8 + 2 + mlen
);
3580 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3584 error ("Unknown block type '%c' (0x%x) in trace frame",
3585 block_type
, block_type
);
3592 tfile_xfer_partial (struct target_ops
*ops
, enum target_object object
,
3593 const char *annex
, gdb_byte
*readbuf
,
3594 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
3599 unsigned short mlen
;
3601 /* We're only doing regular memory for now. */
3602 if (object
!= TARGET_OBJECT_MEMORY
)
3605 if (readbuf
== NULL
)
3606 error ("tfile_xfer_partial: trace file is read-only");
3608 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3610 while (pos
< cur_data_size
)
3612 gotten
= read (trace_fd
, &block_type
, 1);
3614 perror_with_name (trace_filename
);
3615 else if (gotten
< 1)
3616 error (_("Premature end of file while reading trace file"));
3621 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3622 pos
+= trace_regblock_size
;
3625 gotten
= read (trace_fd
, &maddr
, 8);
3627 perror_with_name (trace_filename
);
3628 else if (gotten
< 8)
3629 error (_("Premature end of file while reading trace file"));
3631 gotten
= read (trace_fd
, &mlen
, 2);
3633 perror_with_name (trace_filename
);
3634 else if (gotten
< 2)
3635 error (_("Premature end of file while reading trace file"));
3636 if (maddr
<= offset
&& (offset
+ len
) <= (maddr
+ mlen
))
3638 gotten
= read (trace_fd
, readbuf
, mlen
);
3640 perror_with_name (trace_filename
);
3641 else if (gotten
< mlen
)
3642 error (_("Premature end of file qwhile reading trace file"));
3646 lseek (trace_fd
, mlen
, SEEK_CUR
);
3647 pos
+= (8 + 2 + mlen
);
3650 lseek (trace_fd
, 4 + 8, SEEK_CUR
);
3654 error ("Unknown block type '%c' (0x%x) in traceframe",
3655 block_type
, block_type
);
3659 /* Indicate failure to find the requested memory block. */
3663 /* Iterate through the blocks of a trace frame, looking for a 'V'
3664 block with a matching tsv number. */
3667 tfile_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
3670 int pos
, vnum
, gotten
;
3671 unsigned short mlen
;
3673 lseek (trace_fd
, cur_offset
, SEEK_SET
);
3675 while (pos
< cur_data_size
)
3677 gotten
= read (trace_fd
, &block_type
, 1);
3679 perror_with_name (trace_filename
);
3680 else if (gotten
< 1)
3681 error (_("Premature end of file while reading trace file"));
3686 lseek (trace_fd
, trace_regblock_size
, SEEK_CUR
);
3687 pos
+= trace_regblock_size
;
3690 lseek (trace_fd
, 8, SEEK_CUR
);
3691 gotten
= read (trace_fd
, &mlen
, 2);
3693 perror_with_name (trace_filename
);
3694 else if (gotten
< 2)
3695 error (_("Premature end of file while reading trace file"));
3696 lseek (trace_fd
, mlen
, SEEK_CUR
);
3697 pos
+= (8 + 2 + mlen
);
3700 gotten
= read (trace_fd
, &vnum
, 4);
3702 perror_with_name (trace_filename
);
3703 else if (gotten
< 4)
3704 error (_("Premature end of file while reading trace file"));
3707 gotten
= read (trace_fd
, val
, 8);
3709 perror_with_name (trace_filename
);
3710 else if (gotten
< 8)
3711 error (_("Premature end of file while reading trace file"));
3714 lseek (trace_fd
, 8, SEEK_CUR
);
3718 error ("Unknown block type '%c' (0x%x) in traceframe",
3719 block_type
, block_type
);
3723 /* Didn't find anything. */
3728 tfile_has_memory (struct target_ops
*ops
)
3734 tfile_has_stack (struct target_ops
*ops
)
3740 tfile_has_registers (struct target_ops
*ops
)
3746 init_tfile_ops (void)
3748 tfile_ops
.to_shortname
= "tfile";
3749 tfile_ops
.to_longname
= "Local trace dump file";
3751 "Use a trace file as a target. Specify the filename of the trace file.";
3752 tfile_ops
.to_open
= tfile_open
;
3753 tfile_ops
.to_close
= tfile_close
;
3754 tfile_ops
.to_fetch_registers
= tfile_fetch_registers
;
3755 tfile_ops
.to_xfer_partial
= tfile_xfer_partial
;
3756 tfile_ops
.to_files_info
= tfile_files_info
;
3757 tfile_ops
.to_get_trace_status
= tfile_get_trace_status
;
3758 tfile_ops
.to_trace_find
= tfile_trace_find
;
3759 tfile_ops
.to_get_trace_state_variable_value
= tfile_get_trace_state_variable_value
;
3760 /* core_stratum might seem more logical, but GDB doesn't like having
3761 more than one core_stratum vector. */
3762 tfile_ops
.to_stratum
= process_stratum
;
3763 tfile_ops
.to_has_memory
= tfile_has_memory
;
3764 tfile_ops
.to_has_stack
= tfile_has_stack
;
3765 tfile_ops
.to_has_registers
= tfile_has_registers
;
3766 tfile_ops
.to_magic
= OPS_MAGIC
;
3769 /* module initialization */
3771 _initialize_tracepoint (void)
3773 struct cmd_list_element
*c
;
3775 traceframe_number
= -1;
3776 tracepoint_number
= -1;
3778 if (tracepoint_list
.list
== NULL
)
3780 tracepoint_list
.listsize
= 128;
3781 tracepoint_list
.list
= xmalloc
3782 (tracepoint_list
.listsize
* sizeof (struct memrange
));
3784 if (tracepoint_list
.aexpr_list
== NULL
)
3786 tracepoint_list
.aexpr_listsize
= 128;
3787 tracepoint_list
.aexpr_list
= xmalloc
3788 (tracepoint_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
3791 if (stepping_list
.list
== NULL
)
3793 stepping_list
.listsize
= 128;
3794 stepping_list
.list
= xmalloc
3795 (stepping_list
.listsize
* sizeof (struct memrange
));
3798 if (stepping_list
.aexpr_list
== NULL
)
3800 stepping_list
.aexpr_listsize
= 128;
3801 stepping_list
.aexpr_list
= xmalloc
3802 (stepping_list
.aexpr_listsize
* sizeof (struct agent_expr
*));
3805 add_info ("scope", scope_info
,
3806 _("List the variables local to a scope"));
3808 add_cmd ("tracepoints", class_trace
, NULL
,
3809 _("Tracing of program execution without stopping the program."),
3812 add_com ("tdump", class_trace
, trace_dump_command
,
3813 _("Print everything collected at the current tracepoint."));
3815 add_com ("tsave", class_trace
, trace_save_command
, _("\
3816 Save the trace data to a file.\n\
3817 Use the '-r' option to direct the target to save directly to the file,\n\
3818 using its own filesystem."));
3820 c
= add_com ("tvariable", class_trace
, trace_variable_command
,_("\
3821 Define a trace state variable.\n\
3822 Argument is a $-prefixed name, optionally followed\n\
3823 by '=' and an expression that sets the initial value\n\
3824 at the start of tracing."));
3825 set_cmd_completer (c
, expression_completer
);
3827 add_cmd ("tvariable", class_trace
, delete_trace_variable_command
, _("\
3828 Delete one or more trace state variables.\n\
3829 Arguments are the names of the variables to delete.\n\
3830 If no arguments are supplied, delete all variables."), &deletelist
);
3831 /* FIXME add a trace variable completer */
3833 add_info ("tvariables", tvariables_info
, _("\
3834 Status of trace state variables and their values.\n\
3837 add_prefix_cmd ("tfind", class_trace
, trace_find_command
, _("\
3838 Select a trace frame;\n\
3839 No argument means forward by one frame; '-' means backward by one frame."),
3840 &tfindlist
, "tfind ", 1, &cmdlist
);
3842 add_cmd ("outside", class_trace
, trace_find_outside_command
, _("\
3843 Select a trace frame whose PC is outside the given range (exclusive).\n\
3844 Usage: tfind outside addr1, addr2"),
3847 add_cmd ("range", class_trace
, trace_find_range_command
, _("\
3848 Select a trace frame whose PC is in the given range (inclusive).\n\
3849 Usage: tfind range addr1,addr2"),
3852 add_cmd ("line", class_trace
, trace_find_line_command
, _("\
3853 Select a trace frame by source line.\n\
3854 Argument can be a line number (with optional source file), \n\
3855 a function name, or '*' followed by an address.\n\
3856 Default argument is 'the next source line that was traced'."),
3859 add_cmd ("tracepoint", class_trace
, trace_find_tracepoint_command
, _("\
3860 Select a trace frame by tracepoint number.\n\
3861 Default is the tracepoint for the current trace frame."),
3864 add_cmd ("pc", class_trace
, trace_find_pc_command
, _("\
3865 Select a trace frame by PC.\n\
3866 Default is the current PC, or the PC of the current trace frame."),
3869 add_cmd ("end", class_trace
, trace_find_end_command
, _("\
3870 Synonym for 'none'.\n\
3871 De-select any trace frame and resume 'live' debugging."),
3874 add_cmd ("none", class_trace
, trace_find_none_command
,
3875 _("De-select any trace frame and resume 'live' debugging."),
3878 add_cmd ("start", class_trace
, trace_find_start_command
,
3879 _("Select the first trace frame in the trace buffer."),
3882 add_com ("tstatus", class_trace
, trace_status_command
,
3883 _("Display the status of the current trace data collection."));
3885 add_com ("tstop", class_trace
, trace_stop_command
,
3886 _("Stop trace data collection."));
3888 add_com ("tstart", class_trace
, trace_start_command
,
3889 _("Start trace data collection."));
3891 add_com ("end", class_trace
, end_actions_pseudocommand
, _("\
3892 Ends a list of commands or actions.\n\
3893 Several GDB commands allow you to enter a list of commands or actions.\n\
3894 Entering \"end\" on a line by itself is the normal way to terminate\n\
3896 Note: the \"end\" command cannot be used at the gdb prompt."));
3898 add_com ("while-stepping", class_trace
, while_stepping_pseudocommand
, _("\
3899 Specify single-stepping behavior at a tracepoint.\n\
3900 Argument is number of instructions to trace in single-step mode\n\
3901 following the tracepoint. This command is normally followed by\n\
3902 one or more \"collect\" commands, to specify what to collect\n\
3903 while single-stepping.\n\n\
3904 Note: this command can only be used in a tracepoint \"actions\" list."));
3906 add_com_alias ("ws", "while-stepping", class_alias
, 0);
3907 add_com_alias ("stepping", "while-stepping", class_alias
, 0);
3909 add_com ("collect", class_trace
, collect_pseudocommand
, _("\
3910 Specify one or more data items to be collected at a tracepoint.\n\
3911 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
3912 collect all data (variables, registers) referenced by that expression.\n\
3913 Also accepts the following special arguments:\n\
3914 $regs -- all registers.\n\
3915 $args -- all function arguments.\n\
3916 $locals -- all variables local to the block/function scope.\n\
3917 Note: this command can only be used in a tracepoint \"actions\" list."));
3919 add_com ("teval", class_trace
, teval_pseudocommand
, _("\
3920 Specify one or more expressions to be evaluated at a tracepoint.\n\
3921 Accepts a comma-separated list of (one or more) expressions.\n\
3922 The result of each evaluation will be discarded.\n\
3923 Note: this command can only be used in a tracepoint \"actions\" list."));
3925 add_com ("actions", class_trace
, trace_actions_command
, _("\
3926 Specify the actions to be taken at a tracepoint.\n\
3927 Tracepoint actions may include collecting of specified data, \n\
3928 single-stepping, or enabling/disabling other tracepoints, \n\
3929 depending on target's capabilities."));
3931 default_collect
= xstrdup ("");
3932 add_setshow_string_cmd ("default-collect", class_trace
,
3933 &default_collect
, _("\
3934 Set the list of expressions to collect by default"), _("\
3935 Show the list of expressions to collect by default"), NULL
,
3937 &setlist
, &showlist
);
3939 add_setshow_boolean_cmd ("disconnected-tracing", no_class
,
3940 &disconnected_tracing
, _("\
3941 Set whether tracing continues after GDB disconnects."), _("\
3942 Show whether tracing continues after GDB disconnects."), _("\
3943 Use this to continue a tracing run even if GDB disconnects\n\
3944 or detaches from the target. You can reconnect later and look at\n\
3945 trace data collected in the meantime."),
3946 set_disconnected_tracing
,
3951 add_setshow_boolean_cmd ("circular-trace-buffer", no_class
,
3952 &circular_trace_buffer
, _("\
3953 Set target's use of circular trace buffer."), _("\
3954 Show target's use of circular trace buffer."), _("\
3955 Use this to make the trace buffer into a circular buffer,\n\
3956 which will discard traceframes (oldest first) instead of filling\n\
3957 up and stopping the trace run."),
3958 set_circular_trace_buffer
,
3965 add_target (&tfile_ops
);