1 /* Tracing functionality for remote targets in custom GDB protocol
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
4 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "arch-utils.h"
26 #include "expression.h"
31 #include "gdb_string.h"
33 #include "breakpoint.h"
34 #include "tracepoint.h"
37 #include "completer.h"
39 #include "dictionary.h"
41 #include "user-regs.h"
45 #include "filenames.h"
46 #include "gdbthread.h"
53 /* readline include files */
54 #include "readline/readline.h"
55 #include "readline/history.h"
57 /* readline defines this. */
68 extern int hex2bin (const char *hex, gdb_byte *bin, int count);
69 extern int bin2hex (const gdb_byte *bin, char *hex, int count);
71 extern void stop_tracing ();
73 /* Maximum length of an agent aexpression.
74 This accounts for the fact that packets are limited to 400 bytes
75 (which includes everything -- including the checksum), and assumes
76 the worst case of maximum length for each of the pieces of a
79 NOTE: expressions get mem2hex'ed otherwise this would be twice as
80 large. (400 - 31)/2 == 184 */
81 #define MAX_AGENT_EXPR_LEN 184
83 /* A hook used to notify the UI of tracepoint operations. */
85 void (*deprecated_trace_find_hook) (char *arg, int from_tty);
86 void (*deprecated_trace_start_stop_hook) (int start, int from_tty);
88 extern void (*deprecated_readline_begin_hook) (char *, ...);
89 extern char *(*deprecated_readline_hook) (char *);
90 extern void (*deprecated_readline_end_hook) (void);
92 /* GDB commands implemented in other modules:
95 extern void output_command (char *, int);
100 This module defines the following debugger commands:
101 trace : set a tracepoint on a function, line, or address.
102 info trace : list all debugger-defined tracepoints.
103 delete trace : delete one or more tracepoints.
104 enable trace : enable one or more tracepoints.
105 disable trace : disable one or more tracepoints.
106 actions : specify actions to be taken at a tracepoint.
107 passcount : specify a pass count for a tracepoint.
108 tstart : start a trace experiment.
109 tstop : stop a trace experiment.
110 tstatus : query the status of a trace experiment.
111 tfind : find a trace frame in the trace buffer.
112 tdump : print everything collected at the current tracepoint.
113 save-tracepoints : write tracepoint setup into a file.
115 This module defines the following user-visible debugger variables:
116 $trace_frame : sequence number of trace frame currently being debugged.
117 $trace_line : source line of trace frame currently being debugged.
118 $trace_file : source file of trace frame currently being debugged.
119 $tracepoint : tracepoint number of trace frame currently being debugged.
123 /* ======= Important global variables: ======= */
125 /* The list of all trace state variables. We don't retain pointers to
126 any of these for any reason - API is by name or number only - so it
127 works to have a vector of objects. */
129 typedef struct trace_state_variable tsv_s;
132 static VEC(tsv_s) *tvariables;
134 /* The next integer to assign to a variable. */
136 static int next_tsv_number = 1;
138 /* Number of last traceframe collected. */
139 static int traceframe_number;
141 /* Tracepoint for last traceframe collected. */
142 static int tracepoint_number;
144 /* Symbol for function for last traceframe collected */
145 static struct symbol *traceframe_fun;
147 /* Symtab and line for last traceframe collected */
148 static struct symtab_and_line traceframe_sal;
150 /* Tracing command lists */
151 static struct cmd_list_element *tfindlist;
153 /* List of expressions to collect by default at each tracepoint hit. */
154 char *default_collect = "";
156 static int disconnected_tracing;
158 /* This variable controls whether we ask the target for a linear or
159 circular trace buffer. */
161 static int circular_trace_buffer;
163 /* ======= Important command functions: ======= */
164 static void trace_actions_command (char *, int);
165 static void trace_start_command (char *, int);
166 static void trace_stop_command (char *, int);
167 static void trace_status_command (char *, int);
168 static void trace_find_command (char *, int);
169 static void trace_find_pc_command (char *, int);
170 static void trace_find_tracepoint_command (char *, int);
171 static void trace_find_line_command (char *, int);
172 static void trace_find_range_command (char *, int);
173 static void trace_find_outside_command (char *, int);
174 static void trace_dump_command (char *, int);
176 /* support routines */
178 struct collection_list;
179 static void add_aexpr (struct collection_list *, struct agent_expr *);
180 static char *mem2hex (gdb_byte *, char *, int);
181 static void add_register (struct collection_list *collection,
184 extern void send_disconnected_tracing_value (int value);
186 static void free_uploaded_tps (struct uploaded_tp **utpp);
187 static void free_uploaded_tsvs (struct uploaded_tsv **utsvp);
190 extern void _initialize_tracepoint (void);
192 static struct trace_status trace_status;
194 char *stop_reason_names[] = {
204 struct trace_status *
205 current_trace_status ()
207 return &trace_status;
210 /* Set traceframe number to NUM. */
212 set_traceframe_num (int num)
214 traceframe_number = num;
215 set_internalvar_integer (lookup_internalvar ("trace_frame"), num);
218 /* Set tracepoint number to NUM. */
220 set_tracepoint_num (int num)
222 tracepoint_number = num;
223 set_internalvar_integer (lookup_internalvar ("tracepoint"), num);
226 /* Set externally visible debug variables for querying/printing
227 the traceframe context (line, function, file) */
230 set_traceframe_context (struct frame_info *trace_frame)
234 if (trace_frame == NULL) /* Cease debugging any trace buffers. */
237 traceframe_sal.pc = traceframe_sal.line = 0;
238 traceframe_sal.symtab = NULL;
239 clear_internalvar (lookup_internalvar ("trace_func"));
240 clear_internalvar (lookup_internalvar ("trace_file"));
241 set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
245 /* Save as globals for internal use. */
246 trace_pc = get_frame_pc (trace_frame);
247 traceframe_sal = find_pc_line (trace_pc, 0);
248 traceframe_fun = find_pc_function (trace_pc);
250 /* Save linenumber as "$trace_line", a debugger variable visible to
252 set_internalvar_integer (lookup_internalvar ("trace_line"),
253 traceframe_sal.line);
255 /* Save func name as "$trace_func", a debugger variable visible to
257 if (traceframe_fun == NULL
258 || SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL)
259 clear_internalvar (lookup_internalvar ("trace_func"));
261 set_internalvar_string (lookup_internalvar ("trace_func"),
262 SYMBOL_LINKAGE_NAME (traceframe_fun));
264 /* Save file name as "$trace_file", a debugger variable visible to
266 if (traceframe_sal.symtab == NULL
267 || traceframe_sal.symtab->filename == NULL)
268 clear_internalvar (lookup_internalvar ("trace_file"));
270 set_internalvar_string (lookup_internalvar ("trace_file"),
271 traceframe_sal.symtab->filename);
274 /* Create a new trace state variable with the given name. */
276 struct trace_state_variable *
277 create_trace_state_variable (const char *name)
279 struct trace_state_variable tsv;
281 memset (&tsv, 0, sizeof (tsv));
282 tsv.name = xstrdup (name);
283 tsv.number = next_tsv_number++;
284 return VEC_safe_push (tsv_s, tvariables, &tsv);
287 /* Look for a trace state variable of the given name. */
289 struct trace_state_variable *
290 find_trace_state_variable (const char *name)
292 struct trace_state_variable *tsv;
295 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
296 if (strcmp (name, tsv->name) == 0)
303 delete_trace_state_variable (const char *name)
305 struct trace_state_variable *tsv;
308 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
309 if (strcmp (name, tsv->name) == 0)
311 xfree ((void *)tsv->name);
312 VEC_unordered_remove (tsv_s, tvariables, ix);
316 warning (_("No trace variable named \"$%s\", not deleting"), name);
319 /* The 'tvariable' command collects a name and optional expression to
320 evaluate into an initial value. */
323 trace_variable_command (char *args, int from_tty)
325 struct expression *expr;
326 struct cleanup *old_chain;
327 struct internalvar *intvar = NULL;
329 struct trace_state_variable *tsv;
332 error_no_arg (_("trace state variable name"));
334 /* All the possible valid arguments are expressions. */
335 expr = parse_expression (args);
336 old_chain = make_cleanup (free_current_contents, &expr);
338 if (expr->nelts == 0)
339 error (_("No expression?"));
341 /* Only allow two syntaxes; "$name" and "$name=value". */
342 if (expr->elts[0].opcode == OP_INTERNALVAR)
344 intvar = expr->elts[1].internalvar;
346 else if (expr->elts[0].opcode == BINOP_ASSIGN
347 && expr->elts[1].opcode == OP_INTERNALVAR)
349 intvar = expr->elts[2].internalvar;
350 initval = value_as_long (evaluate_subexpression_type (expr, 4));
353 error (_("Syntax must be $NAME [ = EXPR ]"));
356 error (_("No name given"));
358 if (strlen (internalvar_name (intvar)) <= 0)
359 error (_("Must supply a non-empty variable name"));
361 /* If the variable already exists, just change its initial value. */
362 tsv = find_trace_state_variable (internalvar_name (intvar));
365 tsv->initial_value = initval;
366 printf_filtered (_("Trace state variable $%s now has initial value %s.\n"),
367 tsv->name, plongest (tsv->initial_value));
368 do_cleanups (old_chain);
372 /* Create a new variable. */
373 tsv = create_trace_state_variable (internalvar_name (intvar));
374 tsv->initial_value = initval;
376 printf_filtered (_("Trace state variable $%s created, with initial value %s.\n"),
377 tsv->name, plongest (tsv->initial_value));
379 do_cleanups (old_chain);
383 delete_trace_variable_command (char *args, int from_tty)
387 struct cleanup *back_to;
388 struct trace_state_variable *tsv;
392 if (query (_("Delete all trace state variables? ")))
393 VEC_free (tsv_s, tvariables);
398 argv = gdb_buildargv (args);
399 back_to = make_cleanup_freeargv (argv);
401 for (i = 0; argv[i] != NULL; i++)
404 delete_trace_state_variable (argv[i] + 1);
406 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv[i]);
409 do_cleanups (back_to);
415 tvariables_info_1 (void)
417 struct trace_state_variable *tsv;
420 struct cleanup *back_to;
422 if (VEC_length (tsv_s, tvariables) == 0 && !ui_out_is_mi_like_p (uiout))
424 printf_filtered (_("No trace state variables.\n"));
428 /* Try to acquire values from the target. */
429 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix, ++count)
430 tsv->value_known = target_get_trace_state_variable_value (tsv->number,
433 back_to = make_cleanup_ui_out_table_begin_end (uiout, 3,
434 count, "trace-variables");
435 ui_out_table_header (uiout, 15, ui_left, "name", "Name");
436 ui_out_table_header (uiout, 11, ui_left, "initial", "Initial");
437 ui_out_table_header (uiout, 11, ui_left, "current", "Current");
439 ui_out_table_body (uiout);
441 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
443 struct cleanup *back_to2;
447 back_to2 = make_cleanup_ui_out_tuple_begin_end (uiout, "variable");
449 name = concat ("$", tsv->name, NULL);
450 make_cleanup (xfree, name);
451 ui_out_field_string (uiout, "name", name);
452 ui_out_field_string (uiout, "initial", plongest (tsv->initial_value));
454 if (tsv->value_known)
455 c = plongest (tsv->value);
456 else if (ui_out_is_mi_like_p (uiout))
457 /* For MI, we prefer not to use magic string constants, but rather
458 omit the field completely. The difference between unknown and
459 undefined does not seem important enough to represent. */
461 else if (current_trace_status ()->running || traceframe_number >= 0)
462 /* The value is/was defined, but we don't have it. */
465 /* It is not meaningful to ask about the value. */
468 ui_out_field_string (uiout, "current", c);
469 ui_out_text (uiout, "\n");
471 do_cleanups (back_to2);
474 do_cleanups (back_to);
477 /* List all the trace state variables. */
480 tvariables_info (char *args, int from_tty)
482 tvariables_info_1 ();
485 /* Stash definitions of tsvs into the given file. */
488 save_trace_state_variables (struct ui_file *fp)
490 struct trace_state_variable *tsv;
493 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
495 fprintf_unfiltered (fp, "tvariable $%s", tsv->name);
496 if (tsv->initial_value)
497 fprintf_unfiltered (fp, " = %s", plongest (tsv->initial_value));
498 fprintf_unfiltered (fp, "\n");
502 /* ACTIONS functions: */
504 /* The three functions:
505 collect_pseudocommand,
506 while_stepping_pseudocommand, and
507 end_actions_pseudocommand
508 are placeholders for "commands" that are actually ONLY to be used
509 within a tracepoint action list. If the actual function is ever called,
510 it means that somebody issued the "command" at the top level,
511 which is always an error. */
514 end_actions_pseudocommand (char *args, int from_tty)
516 error (_("This command cannot be used at the top level."));
520 while_stepping_pseudocommand (char *args, int from_tty)
522 error (_("This command can only be used in a tracepoint actions list."));
526 collect_pseudocommand (char *args, int from_tty)
528 error (_("This command can only be used in a tracepoint actions list."));
532 teval_pseudocommand (char *args, int from_tty)
534 error (_("This command can only be used in a tracepoint actions list."));
537 /* Enter a list of actions for a tracepoint. */
539 trace_actions_command (char *args, int from_tty)
541 struct breakpoint *t;
542 struct command_line *l;
544 t = get_tracepoint_by_number (&args, 0, 1);
548 xstrprintf ("Enter actions for tracepoint %d, one per line.",
550 struct cleanup *cleanups = make_cleanup (xfree, tmpbuf);
552 l = read_command_lines (tmpbuf, from_tty, 1, check_tracepoint_command, t);
553 do_cleanups (cleanups);
554 breakpoint_set_commands (t, l);
556 /* else just return */
559 /* Report the results of checking the agent expression, as errors or
563 report_agent_reqs_errors (struct agent_expr *aexpr, struct agent_reqs *areqs)
565 /* All of the "flaws" are serious bytecode generation issues that
566 should never occur. */
567 if (areqs->flaw != agent_flaw_none)
568 internal_error (__FILE__, __LINE__, _("expression is malformed"));
570 /* If analysis shows a stack underflow, GDB must have done something
571 badly wrong in its bytecode generation. */
572 if (areqs->min_height < 0)
573 internal_error (__FILE__, __LINE__,
574 _("expression has min height < 0"));
576 /* Issue this error if the stack is predicted to get too deep. The
577 limit is rather arbitrary; a better scheme might be for the
578 target to report how much stack it will have available. The
579 depth roughly corresponds to parenthesization, so a limit of 20
580 amounts to 20 levels of expression nesting, which is actually
581 a pretty big hairy expression. */
582 if (areqs->max_height > 20)
583 error (_("Expression is too complicated."));
586 /* worker function */
588 validate_actionline (char **line, struct breakpoint *t)
590 struct cmd_list_element *c;
591 struct expression *exp = NULL;
592 struct cleanup *old_chain = NULL;
594 struct bp_location *loc;
595 struct agent_expr *aexpr;
596 struct agent_reqs areqs;
598 /* if EOF is typed, *line is NULL */
602 for (p = *line; isspace ((int) *p);)
605 /* Symbol lookup etc. */
606 if (*p == '\0') /* empty line: just prompt for another line. */
609 if (*p == '#') /* comment line */
612 c = lookup_cmd (&p, cmdlist, "", -1, 1);
614 error (_("`%s' is not a tracepoint action, or is ambiguous."), p);
616 if (cmd_cfunc_eq (c, collect_pseudocommand))
619 { /* repeat over a comma-separated list */
620 QUIT; /* allow user to bail out with ^C */
621 while (isspace ((int) *p))
624 if (*p == '$') /* look for special pseudo-symbols */
626 if ((0 == strncasecmp ("reg", p + 1, 3)) ||
627 (0 == strncasecmp ("arg", p + 1, 3)) ||
628 (0 == strncasecmp ("loc", p + 1, 3)))
633 /* else fall thru, treat p as an expression and parse it! */
636 for (loc = t->loc; loc; loc = loc->next)
639 exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
640 old_chain = make_cleanup (free_current_contents, &exp);
642 if (exp->elts[0].opcode == OP_VAR_VALUE)
644 if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST)
646 error (_("constant `%s' (value %ld) will not be collected."),
647 SYMBOL_PRINT_NAME (exp->elts[2].symbol),
648 SYMBOL_VALUE (exp->elts[2].symbol));
650 else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT)
652 error (_("`%s' is optimized away and cannot be collected."),
653 SYMBOL_PRINT_NAME (exp->elts[2].symbol));
657 /* We have something to collect, make sure that the expr to
658 bytecode translator can handle it and that it's not too
660 aexpr = gen_trace_for_expr (loc->address, exp);
661 make_cleanup_free_agent_expr (aexpr);
663 if (aexpr->len > MAX_AGENT_EXPR_LEN)
664 error (_("Expression is too complicated."));
666 ax_reqs (aexpr, &areqs);
667 (void) make_cleanup (xfree, areqs.reg_mask);
669 report_agent_reqs_errors (aexpr, &areqs);
671 do_cleanups (old_chain);
674 while (p && *p++ == ',');
677 else if (cmd_cfunc_eq (c, teval_pseudocommand))
680 { /* repeat over a comma-separated list */
681 QUIT; /* allow user to bail out with ^C */
682 while (isspace ((int) *p))
686 for (loc = t->loc; loc; loc = loc->next)
689 /* Only expressions are allowed for this action. */
690 exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
691 old_chain = make_cleanup (free_current_contents, &exp);
693 /* We have something to evaluate, make sure that the expr to
694 bytecode translator can handle it and that it's not too
696 aexpr = gen_eval_for_expr (loc->address, exp);
697 make_cleanup_free_agent_expr (aexpr);
699 if (aexpr->len > MAX_AGENT_EXPR_LEN)
700 error (_("Expression is too complicated."));
702 ax_reqs (aexpr, &areqs);
703 (void) make_cleanup (xfree, areqs.reg_mask);
705 report_agent_reqs_errors (aexpr, &areqs);
707 do_cleanups (old_chain);
710 while (p && *p++ == ',');
713 else if (cmd_cfunc_eq (c, while_stepping_pseudocommand))
715 char *steparg; /* in case warning is necessary */
717 while (isspace ((int) *p))
721 if (*p == '\0' || (t->step_count = strtol (p, &p, 0)) == 0)
722 error (_("while-stepping step count `%s' is malformed."), *line);
725 else if (cmd_cfunc_eq (c, end_actions_pseudocommand))
729 error (_("`%s' is not a supported tracepoint action."), *line);
733 memrange_absolute = -1
738 int type; /* memrange_absolute for absolute memory range,
739 else basereg number */
740 bfd_signed_vma start;
744 struct collection_list
746 unsigned char regs_mask[32]; /* room for up to 256 regs */
749 struct memrange *list;
750 long aexpr_listsize; /* size of array pointed to by expr_list elt */
752 struct agent_expr **aexpr_list;
755 tracepoint_list, stepping_list;
757 /* MEMRANGE functions: */
759 static int memrange_cmp (const void *, const void *);
761 /* compare memranges for qsort */
763 memrange_cmp (const void *va, const void *vb)
765 const struct memrange *a = va, *b = vb;
767 if (a->type < b->type)
769 if (a->type > b->type)
771 if (a->type == memrange_absolute)
773 if ((bfd_vma) a->start < (bfd_vma) b->start)
775 if ((bfd_vma) a->start > (bfd_vma) b->start)
780 if (a->start < b->start)
782 if (a->start > b->start)
788 /* Sort the memrange list using qsort, and merge adjacent memranges. */
790 memrange_sortmerge (struct collection_list *memranges)
794 qsort (memranges->list, memranges->next_memrange,
795 sizeof (struct memrange), memrange_cmp);
796 if (memranges->next_memrange > 0)
798 for (a = 0, b = 1; b < memranges->next_memrange; b++)
800 if (memranges->list[a].type == memranges->list[b].type &&
801 memranges->list[b].start - memranges->list[a].end <=
804 /* memrange b starts before memrange a ends; merge them. */
805 if (memranges->list[b].end > memranges->list[a].end)
806 memranges->list[a].end = memranges->list[b].end;
807 continue; /* next b, same a */
811 memcpy (&memranges->list[a], &memranges->list[b],
812 sizeof (struct memrange));
814 memranges->next_memrange = a + 1;
818 /* Add a register to a collection list. */
820 add_register (struct collection_list *collection, unsigned int regno)
823 printf_filtered ("collect register %d\n", regno);
824 if (regno >= (8 * sizeof (collection->regs_mask)))
825 error (_("Internal: register number %d too large for tracepoint"),
827 collection->regs_mask[regno / 8] |= 1 << (regno % 8);
830 /* Add a memrange to a collection list */
832 add_memrange (struct collection_list *memranges,
833 int type, bfd_signed_vma base,
838 printf_filtered ("(%d,", type);
840 printf_filtered (",%ld)\n", len);
843 /* type: memrange_absolute == memory, other n == basereg */
844 memranges->list[memranges->next_memrange].type = type;
845 /* base: addr if memory, offset if reg relative. */
846 memranges->list[memranges->next_memrange].start = base;
847 /* len: we actually save end (base + len) for convenience */
848 memranges->list[memranges->next_memrange].end = base + len;
849 memranges->next_memrange++;
850 if (memranges->next_memrange >= memranges->listsize)
852 memranges->listsize *= 2;
853 memranges->list = xrealloc (memranges->list,
854 memranges->listsize);
857 if (type != memrange_absolute) /* Better collect the base register! */
858 add_register (memranges, type);
861 /* Add a symbol to a collection list. */
863 collect_symbol (struct collection_list *collect,
865 struct gdbarch *gdbarch,
866 long frame_regno, long frame_offset,
871 bfd_signed_vma offset;
872 int treat_as_expr = 0;
874 len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)));
875 switch (SYMBOL_CLASS (sym))
878 printf_filtered ("%s: don't know symbol class %d\n",
879 SYMBOL_PRINT_NAME (sym),
883 printf_filtered ("constant %s (value %ld) will not be collected.\n",
884 SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE (sym));
887 offset = SYMBOL_VALUE_ADDRESS (sym);
892 sprintf_vma (tmp, offset);
893 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
894 SYMBOL_PRINT_NAME (sym), len,
897 /* A struct may be a C++ class with static fields, go to general
898 expression handling. */
899 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
902 add_memrange (collect, memrange_absolute, offset, len);
905 reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
907 printf_filtered ("LOC_REG[parm] %s: ",
908 SYMBOL_PRINT_NAME (sym));
909 add_register (collect, reg);
910 /* Check for doubles stored in two registers. */
911 /* FIXME: how about larger types stored in 3 or more regs? */
912 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
913 len > register_size (gdbarch, reg))
914 add_register (collect, reg + 1);
917 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
918 printf_filtered (" (will not collect %s)\n",
919 SYMBOL_PRINT_NAME (sym));
923 offset = frame_offset + SYMBOL_VALUE (sym);
926 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
927 SYMBOL_PRINT_NAME (sym), len);
929 printf_filtered (" from frame ptr reg %d\n", reg);
931 add_memrange (collect, reg, offset, len);
933 case LOC_REGPARM_ADDR:
934 reg = SYMBOL_VALUE (sym);
938 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
939 SYMBOL_PRINT_NAME (sym), len);
941 printf_filtered (" from reg %d\n", reg);
943 add_memrange (collect, reg, offset, len);
947 offset = frame_offset + SYMBOL_VALUE (sym);
950 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
951 SYMBOL_PRINT_NAME (sym), len);
953 printf_filtered (" from frame ptr reg %d\n", reg);
955 add_memrange (collect, reg, offset, len);
962 case LOC_OPTIMIZED_OUT:
963 printf_filtered ("%s has been optimized out of existence.\n",
964 SYMBOL_PRINT_NAME (sym));
972 /* Expressions are the most general case. */
975 struct agent_expr *aexpr;
976 struct cleanup *old_chain1 = NULL;
977 struct agent_reqs areqs;
979 aexpr = gen_trace_for_var (scope, gdbarch, sym);
981 /* It can happen that the symbol is recorded as a computed
982 location, but it's been optimized away and doesn't actually
983 have a location expression. */
986 printf_filtered ("%s has been optimized out of existence.\n",
987 SYMBOL_PRINT_NAME (sym));
991 old_chain1 = make_cleanup_free_agent_expr (aexpr);
993 ax_reqs (aexpr, &areqs);
995 report_agent_reqs_errors (aexpr, &areqs);
997 discard_cleanups (old_chain1);
998 add_aexpr (collect, aexpr);
1000 /* take care of the registers */
1001 if (areqs.reg_mask_len > 0)
1005 for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
1007 QUIT; /* allow user to bail out with ^C */
1008 if (areqs.reg_mask[ndx1] != 0)
1010 /* assume chars have 8 bits */
1011 for (ndx2 = 0; ndx2 < 8; ndx2++)
1012 if (areqs.reg_mask[ndx1] & (1 << ndx2))
1013 /* it's used -- record it */
1014 add_register (collect, ndx1 * 8 + ndx2);
1021 /* Data to be passed around in the calls to the locals and args
1024 struct add_local_symbols_data
1026 struct collection_list *collect;
1027 struct gdbarch *gdbarch;
1034 /* The callback for the locals and args iterators */
1037 do_collect_symbol (const char *print_name,
1041 struct add_local_symbols_data *p = cb_data;
1043 collect_symbol (p->collect, sym, p->gdbarch, p->frame_regno,
1044 p->frame_offset, p->pc);
1048 /* Add all locals (or args) symbols to collection list */
1050 add_local_symbols (struct collection_list *collect,
1051 struct gdbarch *gdbarch, CORE_ADDR pc,
1052 long frame_regno, long frame_offset, int type)
1054 struct block *block;
1055 struct add_local_symbols_data cb_data;
1057 cb_data.collect = collect;
1058 cb_data.gdbarch = gdbarch;
1060 cb_data.frame_regno = frame_regno;
1061 cb_data.frame_offset = frame_offset;
1066 block = block_for_pc (pc);
1069 warning (_("Can't collect locals; "
1070 "no symbol table info available.\n"));
1074 iterate_over_block_local_vars (block, do_collect_symbol, &cb_data);
1075 if (cb_data.count == 0)
1076 warning (_("No locals found in scope."));
1080 pc = get_pc_function_start (pc);
1081 block = block_for_pc (pc);
1084 warning (_("Can't collect args; no symbol table info available.\n"));
1088 iterate_over_block_arg_vars (block, do_collect_symbol, &cb_data);
1089 if (cb_data.count == 0)
1090 warning (_("No args found in scope."));
1094 /* worker function */
1096 clear_collection_list (struct collection_list *list)
1100 list->next_memrange = 0;
1101 for (ndx = 0; ndx < list->next_aexpr_elt; ndx++)
1103 free_agent_expr (list->aexpr_list[ndx]);
1104 list->aexpr_list[ndx] = NULL;
1106 list->next_aexpr_elt = 0;
1107 memset (list->regs_mask, 0, sizeof (list->regs_mask));
1110 /* reduce a collection list to string form (for gdb protocol) */
1112 stringify_collection_list (struct collection_list *list, char *string)
1114 char temp_buf[2048];
1118 char *(*str_list)[];
1122 count = 1 + list->next_memrange + list->next_aexpr_elt + 1;
1123 str_list = (char *(*)[]) xmalloc (count * sizeof (char *));
1125 for (i = sizeof (list->regs_mask) - 1; i > 0; i--)
1126 if (list->regs_mask[i] != 0) /* skip leading zeroes in regs_mask */
1128 if (list->regs_mask[i] != 0) /* prepare to send regs_mask to the stub */
1131 printf_filtered ("\nCollecting registers (mask): 0x");
1136 QUIT; /* allow user to bail out with ^C */
1138 printf_filtered ("%02X", list->regs_mask[i]);
1139 sprintf (end, "%02X", list->regs_mask[i]);
1142 (*str_list)[ndx] = xstrdup (temp_buf);
1146 printf_filtered ("\n");
1147 if (list->next_memrange > 0 && info_verbose)
1148 printf_filtered ("Collecting memranges: \n");
1149 for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++)
1151 QUIT; /* allow user to bail out with ^C */
1152 sprintf_vma (tmp2, list->list[i].start);
1155 printf_filtered ("(%d, %s, %ld)\n",
1158 (long) (list->list[i].end - list->list[i].start));
1160 if (count + 27 > MAX_AGENT_EXPR_LEN)
1162 (*str_list)[ndx] = savestring (temp_buf, count);
1169 bfd_signed_vma length = list->list[i].end - list->list[i].start;
1171 /* The "%X" conversion specifier expects an unsigned argument,
1172 so passing -1 (memrange_absolute) to it directly gives you
1173 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1175 if (list->list[i].type == memrange_absolute)
1176 sprintf (end, "M-1,%s,%lX", tmp2, (long) length);
1178 sprintf (end, "M%X,%s,%lX", list->list[i].type, tmp2, (long) length);
1181 count += strlen (end);
1182 end = temp_buf + count;
1185 for (i = 0; i < list->next_aexpr_elt; i++)
1187 QUIT; /* allow user to bail out with ^C */
1188 if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN)
1190 (*str_list)[ndx] = savestring (temp_buf, count);
1195 sprintf (end, "X%08X,", list->aexpr_list[i]->len);
1196 end += 10; /* 'X' + 8 hex digits + ',' */
1199 end = mem2hex (list->aexpr_list[i]->buf,
1200 end, list->aexpr_list[i]->len);
1201 count += 2 * list->aexpr_list[i]->len;
1206 (*str_list)[ndx] = savestring (temp_buf, count);
1211 (*str_list)[ndx] = NULL;
1224 encode_actions_1 (struct command_line *action,
1225 struct breakpoint *t,
1226 struct bp_location *tloc,
1228 LONGEST frame_offset,
1229 struct collection_list *collect,
1230 struct collection_list *stepping_list)
1233 struct expression *exp = NULL;
1234 struct command_line *actions;
1236 struct value *tempval;
1237 struct cmd_list_element *cmd;
1238 struct agent_expr *aexpr;
1240 for (; action; action = action->next)
1242 QUIT; /* allow user to bail out with ^C */
1243 action_exp = action->line;
1244 while (isspace ((int) *action_exp))
1247 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
1249 error (_("Bad action list item: %s"), action_exp);
1251 if (cmd_cfunc_eq (cmd, collect_pseudocommand))
1254 { /* repeat over a comma-separated list */
1255 QUIT; /* allow user to bail out with ^C */
1256 while (isspace ((int) *action_exp))
1259 if (0 == strncasecmp ("$reg", action_exp, 4))
1261 for (i = 0; i < gdbarch_num_regs (t->gdbarch); i++)
1262 add_register (collect, i);
1263 action_exp = strchr (action_exp, ','); /* more? */
1265 else if (0 == strncasecmp ("$arg", action_exp, 4))
1267 add_local_symbols (collect,
1273 action_exp = strchr (action_exp, ','); /* more? */
1275 else if (0 == strncasecmp ("$loc", action_exp, 4))
1277 add_local_symbols (collect,
1283 action_exp = strchr (action_exp, ','); /* more? */
1287 unsigned long addr, len;
1288 struct cleanup *old_chain = NULL;
1289 struct cleanup *old_chain1 = NULL;
1290 struct agent_reqs areqs;
1292 exp = parse_exp_1 (&action_exp,
1293 block_for_pc (tloc->address), 1);
1294 old_chain = make_cleanup (free_current_contents, &exp);
1296 switch (exp->elts[0].opcode)
1300 const char *name = &exp->elts[2].string;
1302 i = user_reg_map_name_to_regnum (t->gdbarch,
1303 name, strlen (name));
1305 internal_error (__FILE__, __LINE__,
1306 _("Register $%s not available"),
1309 printf_filtered ("OP_REGISTER: ");
1310 add_register (collect, i);
1315 /* safe because we know it's a simple expression */
1316 tempval = evaluate_expression (exp);
1317 addr = value_address (tempval);
1318 len = TYPE_LENGTH (check_typedef (exp->elts[1].type));
1319 add_memrange (collect, memrange_absolute, addr, len);
1323 collect_symbol (collect,
1324 exp->elts[2].symbol,
1331 default: /* full-fledged expression */
1332 aexpr = gen_trace_for_expr (tloc->address, exp);
1334 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1336 ax_reqs (aexpr, &areqs);
1338 report_agent_reqs_errors (aexpr, &areqs);
1340 discard_cleanups (old_chain1);
1341 add_aexpr (collect, aexpr);
1343 /* take care of the registers */
1344 if (areqs.reg_mask_len > 0)
1349 for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
1351 QUIT; /* allow user to bail out with ^C */
1352 if (areqs.reg_mask[ndx1] != 0)
1354 /* assume chars have 8 bits */
1355 for (ndx2 = 0; ndx2 < 8; ndx2++)
1356 if (areqs.reg_mask[ndx1] & (1 << ndx2))
1357 /* it's used -- record it */
1358 add_register (collect,
1365 do_cleanups (old_chain);
1368 while (action_exp && *action_exp++ == ',');
1370 else if (cmd_cfunc_eq (cmd, teval_pseudocommand))
1373 { /* repeat over a comma-separated list */
1374 QUIT; /* allow user to bail out with ^C */
1375 while (isspace ((int) *action_exp))
1379 unsigned long addr, len;
1380 struct cleanup *old_chain = NULL;
1381 struct cleanup *old_chain1 = NULL;
1382 struct agent_reqs areqs;
1384 exp = parse_exp_1 (&action_exp,
1385 block_for_pc (tloc->address), 1);
1386 old_chain = make_cleanup (free_current_contents, &exp);
1388 aexpr = gen_eval_for_expr (tloc->address, exp);
1389 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1391 ax_reqs (aexpr, &areqs);
1393 report_agent_reqs_errors (aexpr, &areqs);
1395 discard_cleanups (old_chain1);
1396 /* Even though we're not officially collecting, add
1397 to the collect list anyway. */
1398 add_aexpr (collect, aexpr);
1400 do_cleanups (old_chain);
1403 while (action_exp && *action_exp++ == ',');
1405 else if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
1407 /* We check against nested while-stepping when setting
1408 breakpoint action, so no way to run into nested
1410 gdb_assert (stepping_list);
1412 encode_actions_1 (action->body_list[0], t, tloc, frame_reg, frame_offset,
1413 stepping_list, NULL);
1416 error (_("Invalid tracepoint command '%s'"), action->line);
1420 /* Render all actions into gdb protocol. */
1422 encode_actions (struct breakpoint *t, struct bp_location *tloc,
1423 char ***tdp_actions, char ***stepping_actions)
1425 static char tdp_buff[2048], step_buff[2048];
1426 char *default_collect_line = NULL;
1427 struct command_line *actions;
1428 struct command_line *default_collect_action = NULL;
1430 LONGEST frame_offset;
1431 struct cleanup *back_to;
1433 back_to = make_cleanup (null_cleanup, NULL);
1435 clear_collection_list (&tracepoint_list);
1436 clear_collection_list (&stepping_list);
1438 *tdp_actions = NULL;
1439 *stepping_actions = NULL;
1441 gdbarch_virtual_frame_pointer (t->gdbarch,
1442 t->loc->address, &frame_reg, &frame_offset);
1444 actions = breakpoint_commands (t);
1446 /* If there are default expressions to collect, make up a collect
1447 action and prepend to the action list to encode. Note that since
1448 validation is per-tracepoint (local var "xyz" might be valid for
1449 one tracepoint and not another, etc), we make up the action on
1450 the fly, and don't cache it. */
1451 if (*default_collect)
1455 default_collect_line = xstrprintf ("collect %s", default_collect);
1456 make_cleanup (xfree, default_collect_line);
1458 line = default_collect_line;
1459 validate_actionline (&line, t);
1461 default_collect_action = xmalloc (sizeof (struct command_line));
1462 make_cleanup (xfree, default_collect_action);
1463 default_collect_action->next = actions;
1464 default_collect_action->line = line;
1465 actions = default_collect_action;
1467 encode_actions_1 (actions, t, tloc, frame_reg, frame_offset,
1468 &tracepoint_list, &stepping_list);
1470 memrange_sortmerge (&tracepoint_list);
1471 memrange_sortmerge (&stepping_list);
1473 *tdp_actions = stringify_collection_list (&tracepoint_list,
1475 *stepping_actions = stringify_collection_list (&stepping_list,
1478 do_cleanups (back_to);
1482 add_aexpr (struct collection_list *collect, struct agent_expr *aexpr)
1484 if (collect->next_aexpr_elt >= collect->aexpr_listsize)
1486 collect->aexpr_list =
1487 xrealloc (collect->aexpr_list,
1488 2 * collect->aexpr_listsize * sizeof (struct agent_expr *));
1489 collect->aexpr_listsize *= 2;
1491 collect->aexpr_list[collect->next_aexpr_elt] = aexpr;
1492 collect->next_aexpr_elt++;
1497 start_tracing (void)
1500 VEC(breakpoint_p) *tp_vec = NULL;
1502 struct breakpoint *t;
1503 struct trace_state_variable *tsv;
1504 int any_enabled = 0;
1506 tp_vec = all_tracepoints ();
1508 /* No point in tracing without any tracepoints... */
1509 if (VEC_length (breakpoint_p, tp_vec) == 0)
1511 VEC_free (breakpoint_p, tp_vec);
1512 error (_("No tracepoints defined, not starting trace"));
1515 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
1517 if (t->enable_state == bp_enabled)
1524 /* No point in tracing with only disabled tracepoints. */
1527 VEC_free (breakpoint_p, tp_vec);
1528 error (_("No tracepoints enabled, not starting trace"));
1531 target_trace_init ();
1533 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
1535 t->number_on_target = 0;
1536 target_download_tracepoint (t);
1537 t->number_on_target = t->number;
1539 VEC_free (breakpoint_p, tp_vec);
1541 /* Send down all the trace state variables too. */
1542 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
1544 target_download_trace_state_variable (tsv);
1547 /* Tell target to treat text-like sections as transparent. */
1548 target_trace_set_readonly_regions ();
1549 /* Set some mode flags. */
1550 target_set_disconnected_tracing (disconnected_tracing);
1551 target_set_circular_trace_buffer (circular_trace_buffer);
1553 /* Now insert traps and begin collecting data. */
1554 target_trace_start ();
1556 /* Reset our local state. */
1557 set_traceframe_num (-1);
1558 set_tracepoint_num (-1);
1559 set_traceframe_context (NULL);
1560 current_trace_status()->running = 1;
1565 Tell target to clear any previous trace experiment.
1566 Walk the list of tracepoints, and send them (and their actions)
1567 to the target. If no errors,
1568 Tell target to start a new trace experiment. */
1571 trace_start_command (char *args, int from_tty)
1573 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1575 if (current_trace_status ()->running)
1578 && !query (_("A trace is running already. Start a new run? ")))
1579 error (_("New trace run not started."));
1587 trace_stop_command (char *args, int from_tty)
1589 if (!current_trace_status ()->running)
1590 error (_("Trace is not running."));
1598 target_trace_stop ();
1599 /* should change in response to reply? */
1600 current_trace_status ()->running = 0;
1603 /* tstatus command */
1605 trace_status_command (char *args, int from_tty)
1607 struct trace_status *ts = current_trace_status ();
1610 status = target_get_trace_status (ts);
1615 printf_filtered (_("Using a trace file.\n"));
1618 printf_filtered (_("Trace can not be run on this target.\n"));
1623 if (!ts->running_known)
1625 printf_filtered (_("Run/stop status is unknown.\n"));
1627 else if (ts->running)
1629 printf_filtered (_("Trace is running on the target.\n"));
1633 switch (ts->stop_reason)
1635 case trace_never_run:
1636 printf_filtered (_("No trace has been run on the target.\n"));
1639 printf_filtered (_("Trace stopped by a tstop command.\n"));
1641 case trace_buffer_full:
1642 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1644 case trace_disconnected:
1645 printf_filtered (_("Trace stopped because of disconnection.\n"));
1647 case tracepoint_passcount:
1648 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1649 ts->stopping_tracepoint);
1651 case tracepoint_error:
1652 if (ts->stopping_tracepoint)
1653 printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
1654 ts->error_desc, ts->stopping_tracepoint);
1656 printf_filtered (_("Trace stopped by an error (%s).\n"),
1659 case trace_stop_reason_unknown:
1660 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1663 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1669 if (ts->traceframes_created >= 0
1670 && ts->traceframe_count != ts->traceframes_created)
1672 printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
1673 ts->traceframe_count, ts->traceframes_created);
1675 else if (ts->traceframe_count >= 0)
1677 printf_filtered (_("Collected %d trace frames.\n"),
1678 ts->traceframe_count);
1681 if (ts->buffer_free >= 0)
1683 if (ts->buffer_size >= 0)
1685 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1686 ts->buffer_free, ts->buffer_size);
1687 if (ts->buffer_size > 0)
1688 printf_filtered (_(" (%d%% full)"),
1689 ((int) ((((long long) (ts->buffer_size
1690 - ts->buffer_free)) * 100)
1691 / ts->buffer_size)));
1692 printf_filtered (_(".\n"));
1695 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1699 if (ts->disconnected_tracing)
1700 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1702 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1704 if (ts->circular_buffer)
1705 printf_filtered (_("Trace buffer is circular.\n"));
1707 /* Now report on what we're doing with tfind. */
1708 if (traceframe_number >= 0)
1709 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1710 traceframe_number, tracepoint_number);
1712 printf_filtered (_("Not looking at any trace frame.\n"));
1715 /* Report the trace status to uiout, in a way suitable for MI, and not
1716 suitable for CLI. If ON_STOP is true, suppress a few fields that
1717 are not meaningful in the -trace-stop response.
1719 The implementation is essentially parallel to trace_status_command, but
1720 merging them will result in unreadable code. */
1722 trace_status_mi (int on_stop)
1724 struct trace_status *ts = current_trace_status ();
1726 char *string_status;
1728 status = target_get_trace_status (ts);
1730 if (status == -1 && !ts->from_file)
1732 ui_out_field_string (uiout, "supported", "0");
1737 ui_out_field_string (uiout, "supported", "file");
1739 ui_out_field_string (uiout, "supported", "1");
1741 gdb_assert (ts->running_known);
1745 ui_out_field_string (uiout, "running", "1");
1747 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
1748 Given that the frontend gets the status either on -trace-stop, or from
1749 -trace-status after re-connection, it does not seem like this
1750 information is necessary for anything. It is not necessary for either
1751 figuring the vital state of the target nor for navigation of trace
1752 frames. If the frontend wants to show the current state is some
1753 configure dialog, it can request the value when such dialog is
1754 invoked by the user. */
1758 char *stop_reason = NULL;
1759 int stopping_tracepoint = -1;
1762 ui_out_field_string (uiout, "running", "0");
1764 if (ts->stop_reason != trace_stop_reason_unknown)
1766 switch (ts->stop_reason)
1769 stop_reason = "request";
1771 case trace_buffer_full:
1772 stop_reason = "overflow";
1774 case trace_disconnected:
1775 stop_reason = "disconnection";
1777 case tracepoint_passcount:
1778 stop_reason = "passcount";
1779 stopping_tracepoint = ts->stopping_tracepoint;
1781 case tracepoint_error:
1782 stop_reason = "error";
1783 stopping_tracepoint = ts->stopping_tracepoint;
1789 ui_out_field_string (uiout, "stop-reason", stop_reason);
1790 if (stopping_tracepoint != -1)
1791 ui_out_field_int (uiout, "stopping-tracepoint",
1792 stopping_tracepoint);
1793 if (ts->stop_reason == tracepoint_error)
1794 ui_out_field_string (uiout, "error-description",
1800 if (ts->traceframe_count != -1)
1801 ui_out_field_int (uiout, "frames", ts->traceframe_count);
1802 if (ts->traceframes_created != -1)
1803 ui_out_field_int (uiout, "frames-created", ts->traceframes_created);
1804 if (ts->buffer_size != -1)
1805 ui_out_field_int (uiout, "buffer-size", ts->buffer_size);
1806 if (ts->buffer_free != -1)
1807 ui_out_field_int (uiout, "buffer-free", ts->buffer_free);
1809 ui_out_field_int (uiout, "disconnected", ts->disconnected_tracing);
1810 ui_out_field_int (uiout, "circular", ts->circular_buffer);
1813 /* This function handles the details of what to do about an ongoing
1814 tracing run if the user has asked to detach or otherwise disconnect
1817 disconnect_tracing (int from_tty)
1819 /* It can happen that the target that was tracing went away on its
1820 own, and we didn't notice. Get a status update, and if the
1821 current target doesn't even do tracing, then assume it's not
1823 if (target_get_trace_status (current_trace_status ()) < 0)
1824 current_trace_status ()->running = 0;
1826 /* If running interactively, give the user the option to cancel and
1827 then decide what to do differently with the run. Scripts are
1828 just going to disconnect and let the target deal with it,
1829 according to how it's been instructed previously via
1830 disconnected-tracing. */
1831 if (current_trace_status ()->running && from_tty)
1833 if (current_trace_status ()->disconnected_tracing)
1835 if (!query (_("Trace is running and will continue after detach; detach anyway? ")))
1836 error (_("Not confirmed."));
1840 if (!query (_("Trace is running but will stop on detach; detach anyway? ")))
1841 error (_("Not confirmed."));
1845 /* Also we want to be out of tfind mode, otherwise things can get
1846 confusing upon reconnection. Just use these calls instead of
1847 full tfind_1 behavior because we're in the middle of detaching,
1848 and there's no point to updating current stack frame etc. */
1849 set_traceframe_number (-1);
1850 set_traceframe_context (NULL);
1853 /* Worker function for the various flavors of the tfind command. */
1855 tfind_1 (enum trace_find_type type, int num,
1856 ULONGEST addr1, ULONGEST addr2,
1859 int target_frameno = -1, target_tracept = -1;
1860 struct frame_id old_frame_id = null_frame_id;
1862 struct breakpoint *tp;
1864 /* Only try to get the current stack frame if we have a chance of
1865 succeeding. In particular, if we're trying to get a first trace
1866 frame while all threads are running, it's not going to succeed,
1867 so leave it with a default value and let the frame comparison
1868 below (correctly) decide to print out the source location of the
1870 if (!(type == tfind_number && num == -1)
1871 && (has_stack_frames () || traceframe_number >= 0))
1872 old_frame_id = get_frame_id (get_current_frame ());
1874 target_frameno = target_trace_find (type, num, addr1, addr2,
1877 if (type == tfind_number
1879 && target_frameno == -1)
1881 /* We told the target to get out of tfind mode, and it did. */
1883 else if (target_frameno == -1)
1885 /* A request for a non-existent trace frame has failed.
1886 Our response will be different, depending on FROM_TTY:
1888 If FROM_TTY is true, meaning that this command was
1889 typed interactively by the user, then give an error
1890 and DO NOT change the state of traceframe_number etc.
1892 However if FROM_TTY is false, meaning that we're either
1893 in a script, a loop, or a user-defined command, then
1894 DON'T give an error, but DO change the state of
1895 traceframe_number etc. to invalid.
1897 The rationalle is that if you typed the command, you
1898 might just have committed a typo or something, and you'd
1899 like to NOT lose your current debugging state. However
1900 if you're in a user-defined command or especially in a
1901 loop, then you need a way to detect that the command
1902 failed WITHOUT aborting. This allows you to write
1903 scripts that search thru the trace buffer until the end,
1904 and then continue on to do something else. */
1907 error (_("Target failed to find requested trace frame."));
1911 printf_filtered ("End of trace buffer.\n");
1912 #if 0 /* dubious now? */
1913 /* The following will not recurse, since it's
1915 trace_find_command ("-1", from_tty);
1920 tp = get_tracepoint_by_number_on_target (target_tracept);
1922 reinit_frame_cache ();
1923 registers_changed ();
1924 target_dcache_invalidate ();
1925 set_traceframe_num (target_frameno);
1926 set_tracepoint_num (tp ? tp->number : target_tracept);
1927 if (target_frameno == -1)
1928 set_traceframe_context (NULL);
1930 set_traceframe_context (get_current_frame ());
1932 if (traceframe_number >= 0)
1934 /* Use different branches for MI and CLI to make CLI messages
1936 if (ui_out_is_mi_like_p (uiout))
1938 ui_out_field_string (uiout, "found", "1");
1939 ui_out_field_int (uiout, "tracepoint", tracepoint_number);
1940 ui_out_field_int (uiout, "traceframe", traceframe_number);
1944 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1945 traceframe_number, tracepoint_number);
1950 if (ui_out_is_mi_like_p (uiout))
1951 ui_out_field_string (uiout, "found", "0");
1953 printf_unfiltered (_("No trace frame found"));
1956 /* If we're in nonstop mode and getting out of looking at trace
1957 frames, there won't be any current frame to go back to and
1960 && (has_stack_frames () || traceframe_number >= 0))
1962 enum print_what print_what;
1964 /* NOTE: in imitation of the step command, try to determine
1965 whether we have made a transition from one function to
1966 another. If so, we'll print the "stack frame" (ie. the new
1967 function and it's arguments) -- otherwise we'll just show the
1970 if (frame_id_eq (old_frame_id,
1971 get_frame_id (get_current_frame ())))
1972 print_what = SRC_LINE;
1974 print_what = SRC_AND_LOC;
1976 print_stack_frame (get_selected_frame (NULL), 1, print_what);
1981 /* trace_find_command takes a trace frame number n,
1982 sends "QTFrame:<n>" to the target,
1983 and accepts a reply that may contain several optional pieces
1984 of information: a frame number, a tracepoint number, and an
1985 indication of whether this is a trap frame or a stepping frame.
1987 The minimal response is just "OK" (which indicates that the
1988 target does not give us a frame number or a tracepoint number).
1989 Instead of that, the target may send us a string containing
1991 F<hexnum> (gives the selected frame number)
1992 T<hexnum> (gives the selected tracepoint number)
1997 trace_find_command (char *args, int from_tty)
1998 { /* this should only be called with a numeric argument */
2001 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2002 error ("May not look at trace frames while trace is running.");
2004 if (args == 0 || *args == 0)
2005 { /* TFIND with no args means find NEXT trace frame. */
2006 if (traceframe_number == -1)
2007 frameno = 0; /* "next" is first one */
2009 frameno = traceframe_number + 1;
2011 else if (0 == strcmp (args, "-"))
2013 if (traceframe_number == -1)
2014 error (_("not debugging trace buffer"));
2015 else if (from_tty && traceframe_number == 0)
2016 error (_("already at start of trace buffer"));
2018 frameno = traceframe_number - 1;
2020 /* A hack to work around eval's need for fp to have been collected. */
2021 else if (0 == strcmp (args, "-1"))
2024 frameno = parse_and_eval_long (args);
2027 error (_("invalid input (%d is less than zero)"), frameno);
2029 tfind_1 (tfind_number, frameno, 0, 0, from_tty);
2034 trace_find_end_command (char *args, int from_tty)
2036 trace_find_command ("-1", from_tty);
2041 trace_find_none_command (char *args, int from_tty)
2043 trace_find_command ("-1", from_tty);
2048 trace_find_start_command (char *args, int from_tty)
2050 trace_find_command ("0", from_tty);
2053 /* tfind pc command */
2055 trace_find_pc_command (char *args, int from_tty)
2060 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2061 error ("May not look at trace frames while trace is running.");
2063 if (args == 0 || *args == 0)
2064 pc = regcache_read_pc (get_current_regcache ());
2066 pc = parse_and_eval_address (args);
2068 tfind_1 (tfind_pc, 0, pc, 0, from_tty);
2071 /* tfind tracepoint command */
2073 trace_find_tracepoint_command (char *args, int from_tty)
2076 struct breakpoint *tp;
2078 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2079 error ("May not look at trace frames while trace is running.");
2081 if (args == 0 || *args == 0)
2083 if (tracepoint_number == -1)
2084 error (_("No current tracepoint -- please supply an argument."));
2086 tdp = tracepoint_number; /* default is current TDP */
2089 tdp = parse_and_eval_long (args);
2091 /* If we have the tracepoint on hand, use the number that the
2092 target knows about (which may be different if we disconnected
2093 and reconnected). */
2094 tp = get_tracepoint (tdp);
2096 tdp = tp->number_on_target;
2098 tfind_1 (tfind_tp, tdp, 0, 0, from_tty);
2101 /* TFIND LINE command:
2103 This command will take a sourceline for argument, just like BREAK
2104 or TRACE (ie. anything that "decode_line_1" can handle).
2106 With no argument, this command will find the next trace frame
2107 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2110 trace_find_line_command (char *args, int from_tty)
2112 static CORE_ADDR start_pc, end_pc;
2113 struct symtabs_and_lines sals;
2114 struct symtab_and_line sal;
2115 struct cleanup *old_chain;
2116 char startpc_str[40], endpc_str[40];
2118 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2119 error ("May not look at trace frames while trace is running.");
2121 if (args == 0 || *args == 0)
2123 sal = find_pc_line (get_frame_pc (get_current_frame ()), 0);
2125 sals.sals = (struct symtab_and_line *)
2126 xmalloc (sizeof (struct symtab_and_line));
2131 sals = decode_line_spec (args, 1);
2135 old_chain = make_cleanup (xfree, sals.sals);
2136 if (sal.symtab == 0)
2137 error (_("No line number information available."));
2139 if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc))
2141 if (start_pc == end_pc)
2143 printf_filtered ("Line %d of \"%s\"",
2144 sal.line, sal.symtab->filename);
2146 printf_filtered (" is at address ");
2147 print_address (get_current_arch (), start_pc, gdb_stdout);
2149 printf_filtered (" but contains no code.\n");
2150 sal = find_pc_line (start_pc, 0);
2152 && find_line_pc_range (sal, &start_pc, &end_pc)
2153 && start_pc != end_pc)
2154 printf_filtered ("Attempting to find line %d instead.\n",
2157 error (_("Cannot find a good line."));
2161 /* Is there any case in which we get here, and have an address
2162 which the user would want to see? If we have debugging
2163 symbols and no line numbers? */
2164 error (_("Line number %d is out of range for \"%s\"."),
2165 sal.line, sal.symtab->filename);
2167 /* Find within range of stated line. */
2169 tfind_1 (tfind_range, 0, start_pc, end_pc - 1, from_tty);
2171 tfind_1 (tfind_outside, 0, start_pc, end_pc - 1, from_tty);
2172 do_cleanups (old_chain);
2175 /* tfind range command */
2177 trace_find_range_command (char *args, int from_tty)
2179 static CORE_ADDR start, stop;
2180 char start_str[40], stop_str[40];
2183 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2184 error ("May not look at trace frames while trace is running.");
2186 if (args == 0 || *args == 0)
2187 { /* XXX FIXME: what should default behavior be? */
2188 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2192 if (0 != (tmp = strchr (args, ',')))
2194 *tmp++ = '\0'; /* terminate start address */
2195 while (isspace ((int) *tmp))
2197 start = parse_and_eval_address (args);
2198 stop = parse_and_eval_address (tmp);
2201 { /* no explicit end address? */
2202 start = parse_and_eval_address (args);
2203 stop = start + 1; /* ??? */
2206 tfind_1 (tfind_range, 0, start, stop, from_tty);
2209 /* tfind outside command */
2211 trace_find_outside_command (char *args, int from_tty)
2213 CORE_ADDR start, stop;
2214 char start_str[40], stop_str[40];
2217 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2218 error ("May not look at trace frames while trace is running.");
2220 if (args == 0 || *args == 0)
2221 { /* XXX FIXME: what should default behavior be? */
2222 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2226 if (0 != (tmp = strchr (args, ',')))
2228 *tmp++ = '\0'; /* terminate start address */
2229 while (isspace ((int) *tmp))
2231 start = parse_and_eval_address (args);
2232 stop = parse_and_eval_address (tmp);
2235 { /* no explicit end address? */
2236 start = parse_and_eval_address (args);
2237 stop = start + 1; /* ??? */
2240 tfind_1 (tfind_outside, 0, start, stop, from_tty);
2243 /* info scope command: list the locals for a scope. */
2245 scope_info (char *args, int from_tty)
2247 struct symtabs_and_lines sals;
2249 struct minimal_symbol *msym;
2250 struct block *block;
2251 char **canonical, *symname, *save_args = args;
2252 struct dict_iterator iter;
2254 struct gdbarch *gdbarch;
2257 if (args == 0 || *args == 0)
2258 error (_("requires an argument (function, line or *addr) to define a scope"));
2260 sals = decode_line_1 (&args, 1, NULL, 0, &canonical, NULL);
2261 if (sals.nelts == 0)
2262 return; /* presumably decode_line_1 has already warned */
2264 /* Resolve line numbers to PC */
2265 resolve_sal_pc (&sals.sals[0]);
2266 block = block_for_pc (sals.sals[0].pc);
2270 QUIT; /* allow user to bail out with ^C */
2271 ALL_BLOCK_SYMBOLS (block, iter, sym)
2273 QUIT; /* allow user to bail out with ^C */
2275 printf_filtered ("Scope for %s:\n", save_args);
2278 symname = SYMBOL_PRINT_NAME (sym);
2279 if (symname == NULL || *symname == '\0')
2280 continue; /* probably botched, certainly useless */
2282 gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile);
2284 printf_filtered ("Symbol %s is ", symname);
2285 switch (SYMBOL_CLASS (sym))
2288 case LOC_UNDEF: /* messed up symbol? */
2289 printf_filtered ("a bogus symbol, class %d.\n",
2290 SYMBOL_CLASS (sym));
2291 count--; /* don't count this one */
2294 printf_filtered ("a constant with value %ld (0x%lx)",
2295 SYMBOL_VALUE (sym), SYMBOL_VALUE (sym));
2297 case LOC_CONST_BYTES:
2298 printf_filtered ("constant bytes: ");
2299 if (SYMBOL_TYPE (sym))
2300 for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++)
2301 fprintf_filtered (gdb_stdout, " %02x",
2302 (unsigned) SYMBOL_VALUE_BYTES (sym)[j]);
2305 printf_filtered ("in static storage at address ");
2306 printf_filtered ("%s", paddress (gdbarch,
2307 SYMBOL_VALUE_ADDRESS (sym)));
2310 /* GDBARCH is the architecture associated with the objfile
2311 the symbol is defined in; the target architecture may be
2312 different, and may provide additional registers. However,
2313 we do not know the target architecture at this point.
2314 We assume the objfile architecture will contain all the
2315 standard registers that occur in debug info in that
2317 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
2319 if (SYMBOL_IS_ARGUMENT (sym))
2320 printf_filtered ("an argument in register $%s",
2321 gdbarch_register_name (gdbarch, regno));
2323 printf_filtered ("a local variable in register $%s",
2324 gdbarch_register_name (gdbarch, regno));
2327 printf_filtered ("an argument at stack/frame offset %ld",
2328 SYMBOL_VALUE (sym));
2331 printf_filtered ("a local variable at frame offset %ld",
2332 SYMBOL_VALUE (sym));
2335 printf_filtered ("a reference argument at offset %ld",
2336 SYMBOL_VALUE (sym));
2338 case LOC_REGPARM_ADDR:
2339 /* Note comment at LOC_REGISTER. */
2340 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
2341 printf_filtered ("the address of an argument, in register $%s",
2342 gdbarch_register_name (gdbarch, regno));
2345 printf_filtered ("a typedef.\n");
2348 printf_filtered ("a label at address ");
2349 printf_filtered ("%s", paddress (gdbarch,
2350 SYMBOL_VALUE_ADDRESS (sym)));
2353 printf_filtered ("a function at address ");
2354 printf_filtered ("%s",
2355 paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (sym))));
2357 case LOC_UNRESOLVED:
2358 msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym),
2361 printf_filtered ("Unresolved Static");
2364 printf_filtered ("static storage at address ");
2365 printf_filtered ("%s",
2366 paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msym)));
2369 case LOC_OPTIMIZED_OUT:
2370 printf_filtered ("optimized out.\n");
2373 SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, gdb_stdout);
2376 if (SYMBOL_TYPE (sym))
2377 printf_filtered (", length %d.\n",
2378 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))));
2380 if (BLOCK_FUNCTION (block))
2383 block = BLOCK_SUPERBLOCK (block);
2386 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2390 /* worker function (cleanup) */
2392 replace_comma (void *data)
2399 /* Helper for trace_dump_command. Dump the action list starting at
2400 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2401 actions of the body of a while-stepping action. STEPPING_FRAME is
2402 set if the current traceframe was determined to be a while-stepping
2406 trace_dump_actions (struct command_line *action,
2407 int stepping_actions, int stepping_frame,
2410 char *action_exp, *next_comma;
2412 for (; action != NULL; action = action->next)
2414 struct cmd_list_element *cmd;
2416 QUIT; /* allow user to bail out with ^C */
2417 action_exp = action->line;
2418 while (isspace ((int) *action_exp))
2421 /* The collection actions to be done while stepping are
2422 bracketed by the commands "while-stepping" and "end". */
2424 if (*action_exp == '#') /* comment line */
2427 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
2429 error (_("Bad action list item: %s"), action_exp);
2431 if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
2435 for (i = 0; i < action->body_count; ++i)
2436 trace_dump_actions (action->body_list[i],
2437 1, stepping_frame, from_tty);
2439 else if (cmd_cfunc_eq (cmd, collect_pseudocommand))
2441 /* Display the collected data.
2442 For the trap frame, display only what was collected at
2443 the trap. Likewise for stepping frames, display only
2444 what was collected while stepping. This means that the
2445 two boolean variables, STEPPING_FRAME and
2446 STEPPING_ACTIONS should be equal. */
2447 if (stepping_frame == stepping_actions)
2450 { /* repeat over a comma-separated list */
2451 QUIT; /* allow user to bail out with ^C */
2452 if (*action_exp == ',')
2454 while (isspace ((int) *action_exp))
2457 next_comma = strchr (action_exp, ',');
2459 if (0 == strncasecmp (action_exp, "$reg", 4))
2460 registers_info (NULL, from_tty);
2461 else if (0 == strncasecmp (action_exp, "$loc", 4))
2462 locals_info (NULL, from_tty);
2463 else if (0 == strncasecmp (action_exp, "$arg", 4))
2464 args_info (NULL, from_tty);
2469 make_cleanup (replace_comma, next_comma);
2472 printf_filtered ("%s = ", action_exp);
2473 output_command (action_exp, from_tty);
2474 printf_filtered ("\n");
2478 action_exp = next_comma;
2480 while (action_exp && *action_exp == ',');
2486 /* The tdump command. */
2489 trace_dump_command (char *args, int from_tty)
2491 struct regcache *regcache;
2492 struct breakpoint *t;
2493 int stepping_frame = 0;
2494 struct bp_location *loc;
2495 char *line, *default_collect_line = NULL;
2496 struct command_line *actions, *default_collect_action = NULL;
2497 struct cleanup *old_chain = NULL;
2499 if (tracepoint_number == -1)
2501 warning (_("No current trace frame."));
2505 t = get_tracepoint (tracepoint_number);
2508 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2511 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2512 tracepoint_number, traceframe_number);
2514 /* The current frame is a trap frame if the frame PC is equal
2515 to the tracepoint PC. If not, then the current frame was
2516 collected during single-stepping. */
2518 regcache = get_current_regcache ();
2520 /* If the traceframe's address matches any of the tracepoint's
2521 locations, assume it is a direct hit rather than a while-stepping
2522 frame. (FIXME this is not reliable, should record each frame's
2525 for (loc = t->loc; loc; loc = loc->next)
2526 if (loc->address == regcache_read_pc (regcache))
2529 actions = breakpoint_commands (t);
2531 /* If there is a default-collect list, make up a collect command,
2532 prepend to the tracepoint's commands, and pass the whole mess to
2533 the trace dump scanner. We need to validate because
2534 default-collect might have been junked since the trace run. */
2535 if (*default_collect)
2537 default_collect_line = xstrprintf ("collect %s", default_collect);
2538 old_chain = make_cleanup (xfree, default_collect_line);
2539 line = default_collect_line;
2540 validate_actionline (&line, t);
2541 default_collect_action = xmalloc (sizeof (struct command_line));
2542 make_cleanup (xfree, default_collect_action);
2543 default_collect_action->next = actions;
2544 default_collect_action->line = line;
2545 actions = default_collect_action;
2548 trace_dump_actions (actions, 0, stepping_frame, from_tty);
2550 if (*default_collect)
2551 do_cleanups (old_chain);
2554 /* Encode a piece of a tracepoint's source-level definition in a form
2555 that is suitable for both protocol and saving in files. */
2556 /* This version does not do multiple encodes for long strings; it should
2557 return an offset to the next piece to encode. FIXME */
2560 encode_source_string (int tpnum, ULONGEST addr,
2561 char *srctype, char *src, char *buf, int buf_size)
2563 if (80 + strlen (srctype) > buf_size)
2564 error (_("Buffer too small for source encoding"));
2565 sprintf (buf, "%x:%s:%s:%x:%x:",
2566 tpnum, phex_nz (addr, sizeof (addr)), srctype, 0, (int) strlen (src));
2567 if (strlen (buf) + strlen (src) * 2 >= buf_size)
2568 error (_("Source string too long for buffer"));
2569 bin2hex (src, buf + strlen (buf), 0);
2573 extern int trace_regblock_size;
2575 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2576 non-zero, the save is performed on the target, otherwise GDB obtains all
2577 trace data and saves it locally. */
2580 trace_save (const char *filename, int target_does_save)
2582 struct cleanup *cleanup;
2584 struct trace_status *ts = current_trace_status ();
2587 struct uploaded_tp *uploaded_tps = NULL, *utp;
2588 struct uploaded_tsv *uploaded_tsvs = NULL, *utsv;
2592 ULONGEST offset = 0;
2593 #define MAX_TRACE_UPLOAD 2000
2594 gdb_byte buf[MAX_TRACE_UPLOAD];
2597 /* If the target is to save the data to a file on its own, then just
2598 send the command and be done with it. */
2599 if (target_does_save)
2601 err = target_save_trace_data (filename);
2603 error (_("Target failed to save trace data to '%s'."),
2608 /* Get the trace status first before opening the file, so if the
2609 target is losing, we can get out without touching files. */
2610 status = target_get_trace_status (ts);
2612 pathname = tilde_expand (filename);
2613 cleanup = make_cleanup (xfree, pathname);
2615 fp = fopen (pathname, "w");
2617 error (_("Unable to open file '%s' for saving trace data (%s)"),
2618 filename, safe_strerror (errno));
2619 make_cleanup_fclose (fp);
2621 /* Write a file header, with a high-bit-set char to indicate a
2622 binary file, plus a hint as what this file is, and a version
2623 number in case of future needs. */
2624 written = fwrite ("\x7fTRACE0\n", 8, 1, fp);
2626 perror_with_name (pathname);
2628 /* Write descriptive info. */
2630 /* Write out the size of a register block. */
2631 fprintf (fp, "R %x\n", trace_regblock_size);
2633 /* Write out status of the tracing run (aka "tstatus" info). */
2634 fprintf (fp, "status %c;%s",
2635 (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]);
2636 if (ts->stop_reason == tracepoint_error)
2638 char *buf = (char *) alloca (strlen (ts->error_desc) * 2 + 1);
2639 bin2hex ((gdb_byte *) ts->error_desc, buf, 0);
2640 fprintf (fp, ":%s", buf);
2642 fprintf (fp, ":%x", ts->stopping_tracepoint);
2643 if (ts->traceframe_count >= 0)
2644 fprintf (fp, ";tframes:%x", ts->traceframe_count);
2645 if (ts->traceframes_created >= 0)
2646 fprintf (fp, ";tcreated:%x", ts->traceframes_created);
2647 if (ts->buffer_free >= 0)
2648 fprintf (fp, ";tfree:%x", ts->buffer_free);
2649 if (ts->buffer_size >= 0)
2650 fprintf (fp, ";tsize:%x", ts->buffer_size);
2651 if (ts->disconnected_tracing)
2652 fprintf (fp, ";disconn:%x", ts->disconnected_tracing);
2653 if (ts->circular_buffer)
2654 fprintf (fp, ";circular:%x", ts->circular_buffer);
2657 /* Note that we want to upload tracepoints and save those, rather
2658 than simply writing out the local ones, because the user may have
2659 changed tracepoints in GDB in preparation for a future tracing
2660 run, or maybe just mass-deleted all types of breakpoints as part
2661 of cleaning up. So as not to contaminate the session, leave the
2662 data in its uploaded form, don't make into real tracepoints. */
2664 /* Get trace state variables first, they may be checked when parsing
2665 uploaded commands. */
2667 target_upload_trace_state_variables (&uploaded_tsvs);
2669 for (utsv = uploaded_tsvs; utsv; utsv = utsv->next)
2675 buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1);
2676 bin2hex ((gdb_byte *) (utsv->name), buf, 0);
2679 fprintf (fp, "tsv %x:%s:%x:%s\n",
2680 utsv->number, phex_nz (utsv->initial_value, 8),
2681 utsv->builtin, buf);
2687 free_uploaded_tsvs (&uploaded_tsvs);
2689 target_upload_tracepoints (&uploaded_tps);
2691 for (utp = uploaded_tps; utp; utp = utp->next)
2693 fprintf (fp, "tp T%x:%s:%c:%x:%x",
2694 utp->number, phex_nz (utp->addr, sizeof (utp->addr)),
2695 (utp->enabled ? 'E' : 'D'), utp->step, utp->pass);
2696 if (utp->type == bp_fast_tracepoint)
2697 fprintf (fp, ":F%x", utp->orig_size);
2699 fprintf (fp, ":X%x,%s", (unsigned int) strlen (utp->cond) / 2,
2702 for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
2703 fprintf (fp, "tp A%x:%s:%s\n",
2704 utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
2705 for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
2706 fprintf (fp, "tp S%x:%s:%s\n",
2707 utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
2710 encode_source_string (utp->number, utp->addr,
2711 "at", utp->at_string, buf, MAX_TRACE_UPLOAD);
2712 fprintf (fp, "tp Z%s\n", buf);
2714 if (utp->cond_string)
2716 encode_source_string (utp->number, utp->addr,
2717 "cond", utp->cond_string, buf, MAX_TRACE_UPLOAD);
2718 fprintf (fp, "tp Z%s\n", buf);
2720 for (a = 0; VEC_iterate (char_ptr, utp->cmd_strings, a, act); ++a)
2722 encode_source_string (utp->number, utp->addr, "cmd", act,
2723 buf, MAX_TRACE_UPLOAD);
2724 fprintf (fp, "tp Z%s\n", buf);
2728 free_uploaded_tps (&uploaded_tps);
2730 /* Mark the end of the definition section. */
2733 /* Get and write the trace data proper. We ask for big blocks, in
2734 the hopes of efficiency, but will take less if the target has
2735 packet size limitations or some such. */
2738 gotten = target_get_raw_trace_data (buf, offset, MAX_TRACE_UPLOAD);
2740 error (_("Failure to get requested trace buffer data"));
2741 /* No more data is forthcoming, we're done. */
2744 written = fwrite (buf, gotten, 1, fp);
2746 perror_with_name (pathname);
2750 /* Mark the end of trace data. (We know that gotten is 0 at this point.) */
2751 written = fwrite (&gotten, 4, 1, fp);
2753 perror_with_name (pathname);
2755 do_cleanups (cleanup);
2759 trace_save_command (char *args, int from_tty)
2761 int target_does_save = 0;
2763 char *filename = NULL;
2764 struct cleanup *back_to;
2767 error_no_arg (_("file in which to save trace data"));
2769 argv = gdb_buildargv (args);
2770 back_to = make_cleanup_freeargv (argv);
2772 for (; *argv; ++argv)
2774 if (strcmp (*argv, "-r") == 0)
2775 target_does_save = 1;
2776 else if (**argv == '-')
2777 error (_("unknown option `%s'"), *argv);
2783 error_no_arg (_("file in which to save trace data"));
2785 trace_save (filename, target_does_save);
2788 printf_filtered (_("Trace data saved to file '%s'.\n"), args);
2790 do_cleanups (back_to);
2793 /* Tell the target what to do with an ongoing tracing run if GDB
2794 disconnects for some reason. */
2797 send_disconnected_tracing_value (int value)
2799 target_set_disconnected_tracing (value);
2803 set_disconnected_tracing (char *args, int from_tty,
2804 struct cmd_list_element *c)
2806 send_disconnected_tracing_value (disconnected_tracing);
2810 set_circular_trace_buffer (char *args, int from_tty,
2811 struct cmd_list_element *c)
2813 target_set_circular_trace_buffer (circular_trace_buffer);
2816 /* Convert the memory pointed to by mem into hex, placing result in buf.
2817 * Return a pointer to the last char put in buf (null)
2818 * "stolen" from sparc-stub.c
2821 static const char hexchars[] = "0123456789abcdef";
2824 mem2hex (gdb_byte *mem, char *buf, int count)
2832 *buf++ = hexchars[ch >> 4];
2833 *buf++ = hexchars[ch & 0xf];
2842 get_traceframe_number (void)
2844 return traceframe_number;
2847 /* Make the traceframe NUM be the current trace frame. Does nothing
2848 if NUM is already current. */
2851 set_traceframe_number (int num)
2855 if (traceframe_number == num)
2857 /* Nothing to do. */
2861 newnum = target_trace_find (tfind_number, num, 0, 0, NULL);
2864 warning (_("could not change traceframe"));
2866 traceframe_number = newnum;
2868 /* Changing the traceframe changes our view of registers and of the
2870 registers_changed ();
2873 /* A cleanup used when switching away and back from tfind mode. */
2875 struct current_traceframe_cleanup
2877 /* The traceframe we were inspecting. */
2878 int traceframe_number;
2882 do_restore_current_traceframe_cleanup (void *arg)
2884 struct current_traceframe_cleanup *old = arg;
2886 set_traceframe_number (old->traceframe_number);
2890 restore_current_traceframe_cleanup_dtor (void *arg)
2892 struct current_traceframe_cleanup *old = arg;
2898 make_cleanup_restore_current_traceframe (void)
2900 struct current_traceframe_cleanup *old;
2902 old = xmalloc (sizeof (struct current_traceframe_cleanup));
2903 old->traceframe_number = traceframe_number;
2905 return make_cleanup_dtor (do_restore_current_traceframe_cleanup, old,
2906 restore_current_traceframe_cleanup_dtor);
2909 /* Given a number and address, return an uploaded tracepoint with that
2910 number, creating if necessary. */
2912 struct uploaded_tp *
2913 get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp)
2915 struct uploaded_tp *utp;
2917 for (utp = *utpp; utp; utp = utp->next)
2918 if (utp->number == num && utp->addr == addr)
2920 utp = (struct uploaded_tp *) xmalloc (sizeof (struct uploaded_tp));
2921 memset (utp, 0, sizeof (struct uploaded_tp));
2924 utp->actions = NULL;
2925 utp->step_actions = NULL;
2926 utp->cmd_strings = NULL;
2933 free_uploaded_tps (struct uploaded_tp **utpp)
2935 struct uploaded_tp *next_one;
2939 next_one = (*utpp)->next;
2945 /* Given a number and address, return an uploaded tracepoint with that
2946 number, creating if necessary. */
2948 struct uploaded_tsv *
2949 get_uploaded_tsv (int num, struct uploaded_tsv **utsvp)
2951 struct uploaded_tsv *utsv;
2953 for (utsv = *utsvp; utsv; utsv = utsv->next)
2954 if (utsv->number == num)
2956 utsv = (struct uploaded_tsv *) xmalloc (sizeof (struct uploaded_tsv));
2957 memset (utsv, 0, sizeof (struct uploaded_tsv));
2959 utsv->next = *utsvp;
2965 free_uploaded_tsvs (struct uploaded_tsv **utsvp)
2967 struct uploaded_tsv *next_one;
2971 next_one = (*utsvp)->next;
2977 /* Look for an existing tracepoint that seems similar enough to the
2978 uploaded one. Enablement isn't compared, because the user can
2979 toggle that freely, and may have done so in anticipation of the
2983 find_matching_tracepoint (struct uploaded_tp *utp)
2985 VEC(breakpoint_p) *tp_vec = all_tracepoints ();
2987 struct breakpoint *t;
2988 struct bp_location *loc;
2990 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
2992 if (t->type == utp->type
2993 && t->step_count == utp->step
2994 && t->pass_count == utp->pass
2995 /* FIXME also test conditionals and actions */
2998 /* Scan the locations for an address match. */
2999 for (loc = t->loc; loc; loc = loc->next)
3001 if (loc->address == utp->addr)
3009 /* Given a list of tracepoints uploaded from a target, attempt to
3010 match them up with existing tracepoints, and create new ones if not
3014 merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps)
3016 struct uploaded_tp *utp;
3017 struct breakpoint *t;
3019 /* Look for GDB tracepoints that match up with our uploaded versions. */
3020 for (utp = *uploaded_tps; utp; utp = utp->next)
3022 t = find_matching_tracepoint (utp);
3024 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
3025 t->number, utp->number, paddress (get_current_arch (), utp->addr));
3028 t = create_tracepoint_from_upload (utp);
3030 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
3031 t->number, utp->number, paddress (get_current_arch (), utp->addr));
3033 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
3034 utp->number, paddress (get_current_arch (), utp->addr));
3036 /* Whether found or created, record the number used by the
3037 target, to help with mapping target tracepoints back to their
3038 counterparts here. */
3040 t->number_on_target = utp->number;
3043 free_uploaded_tps (uploaded_tps);
3046 /* Trace state variables don't have much to identify them beyond their
3047 name, so just use that to detect matches. */
3049 struct trace_state_variable *
3050 find_matching_tsv (struct uploaded_tsv *utsv)
3055 return find_trace_state_variable (utsv->name);
3058 struct trace_state_variable *
3059 create_tsv_from_upload (struct uploaded_tsv *utsv)
3061 const char *namebase;
3064 struct trace_state_variable *tsv;
3068 namebase = utsv->name;
3069 sprintf (buf, "%s", namebase);
3074 sprintf (buf, "%s_%d", namebase, try_num++);
3077 /* Fish for a name that is not in use. */
3078 /* (should check against all internal vars?) */
3079 while (find_trace_state_variable (buf))
3080 sprintf (buf, "%s_%d", namebase, try_num++);
3082 /* We have an available name, create the variable. */
3083 tsv = create_trace_state_variable (xstrdup (buf));
3084 tsv->initial_value = utsv->initial_value;
3085 tsv->builtin = utsv->builtin;
3090 /* Given a list of uploaded trace state variables, try to match them
3091 up with existing variables, or create additional ones. */
3094 merge_uploaded_trace_state_variables (struct uploaded_tsv **uploaded_tsvs)
3097 struct uploaded_tsv *utsv;
3098 struct trace_state_variable *tsv;
3101 /* Most likely some numbers will have to be reassigned as part of
3102 the merge, so clear them all in anticipation. */
3103 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3106 for (utsv = *uploaded_tsvs; utsv; utsv = utsv->next)
3108 tsv = find_matching_tsv (utsv);
3110 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
3111 tsv->name, utsv->number);
3114 tsv = create_tsv_from_upload (utsv);
3115 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
3116 tsv->name, utsv->number);
3118 /* Give precedence to numberings that come from the target. */
3120 tsv->number = utsv->number;
3123 /* Renumber everything that didn't get a target-assigned number. */
3125 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3126 if (tsv->number > highest)
3127 highest = tsv->number;
3130 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3131 if (tsv->number == 0)
3132 tsv->number = highest++;
3134 free_uploaded_tsvs (uploaded_tsvs);
3137 /* target tfile command */
3139 struct target_ops tfile_ops;
3141 /* Fill in tfile_ops with its defined operations and properties. */
3143 #define TRACE_HEADER_SIZE 8
3145 char *trace_filename;
3147 off_t trace_frames_offset;
3150 int trace_regblock_size;
3152 static void tfile_interp_line (char *line,
3153 struct uploaded_tp **utpp,
3154 struct uploaded_tsv **utsvp);
3157 tfile_open (char *filename, int from_tty)
3160 struct cleanup *old_chain;
3163 char header[TRACE_HEADER_SIZE];
3164 char linebuf[1000]; /* should be max remote packet size or so */
3166 int bytes, i, gotten;
3167 struct trace_status *ts;
3168 struct uploaded_tp *uploaded_tps = NULL;
3169 struct uploaded_tsv *uploaded_tsvs = NULL;
3171 target_preopen (from_tty);
3173 error (_("No trace file specified."));
3175 filename = tilde_expand (filename);
3176 if (!IS_ABSOLUTE_PATH(filename))
3178 temp = concat (current_directory, "/", filename, (char *)NULL);
3183 old_chain = make_cleanup (xfree, filename);
3185 flags = O_BINARY | O_LARGEFILE;
3187 scratch_chan = open (filename, flags, 0);
3188 if (scratch_chan < 0)
3189 perror_with_name (filename);
3191 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3193 discard_cleanups (old_chain); /* Don't free filename any more */
3194 unpush_target (&tfile_ops);
3196 push_target (&tfile_ops);
3198 trace_filename = xstrdup (filename);
3199 trace_fd = scratch_chan;
3202 /* Read the file header and test for validity. */
3203 gotten = read (trace_fd, &header, TRACE_HEADER_SIZE);
3205 perror_with_name (trace_filename);
3206 else if (gotten < TRACE_HEADER_SIZE)
3207 error (_("Premature end of file while reading trace file"));
3209 bytes += TRACE_HEADER_SIZE;
3210 if (!(header[0] == 0x7f
3211 && (strncmp (header + 1, "TRACE0\n", 7) == 0)))
3212 error (_("File is not a valid trace file."));
3214 trace_regblock_size = 0;
3215 ts = current_trace_status ();
3216 /* We know we're working with a file. */
3218 /* Set defaults in case there is no status line. */
3219 ts->running_known = 0;
3220 ts->stop_reason = trace_stop_reason_unknown;
3221 ts->traceframe_count = -1;
3222 ts->buffer_free = 0;
3223 ts->disconnected_tracing = 0;
3224 ts->circular_buffer = 0;
3226 /* Read through a section of newline-terminated lines that
3227 define things like tracepoints. */
3231 gotten = read (trace_fd, &byte, 1);
3233 perror_with_name (trace_filename);
3234 else if (gotten < 1)
3235 error (_("Premature end of file while reading trace file"));
3240 /* Empty line marks end of the definition section. */
3245 tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs);
3248 linebuf[i++] = byte;
3250 error (_("Excessively long lines in trace file"));
3253 /* Add the file's tracepoints and variables into the current mix. */
3255 /* Get trace state variables first, they may be checked when parsing
3256 uploaded commands. */
3257 merge_uploaded_trace_state_variables (&uploaded_tsvs);
3259 merge_uploaded_tracepoints (&uploaded_tps);
3261 /* Record the starting offset of the binary trace data. */
3262 trace_frames_offset = bytes;
3264 /* If we don't have a blocksize, we can't interpret the
3266 if (trace_regblock_size == 0)
3267 error (_("No register block size recorded in trace file"));
3268 if (ts->traceframe_count <= 0)
3270 warning ("No traceframes present in this file.");
3274 #define TFILE_PID (1)
3275 inferior_appeared (current_inferior (), TFILE_PID);
3276 inferior_ptid = pid_to_ptid (TFILE_PID);
3277 add_thread_silent (inferior_ptid);
3279 post_create_inferior (&tfile_ops, from_tty);
3282 /* FIXME this will get defined in MI patch submission */
3283 tfind_1 (tfind_number, 0, 0, 0, 0);
3287 /* Interpret the given line from the definitions part of the trace
3291 tfile_interp_line (char *line,
3292 struct uploaded_tp **utpp, struct uploaded_tsv **utsvp)
3296 if (strncmp (p, "R ", strlen ("R ")) == 0)
3299 trace_regblock_size = strtol (p, &p, 16);
3301 else if (strncmp (p, "status ", strlen ("status ")) == 0)
3303 p += strlen ("status ");
3304 parse_trace_status (p, current_trace_status ());
3306 else if (strncmp (p, "tp ", strlen ("tp ")) == 0)
3308 p += strlen ("tp ");
3309 parse_tracepoint_definition (p, utpp);
3311 else if (strncmp (p, "tsv ", strlen ("tsv ")) == 0)
3313 p += strlen ("tsv ");
3314 parse_tsv_definition (p, utsvp);
3317 warning ("Ignoring trace file definition \"%s\"", line);
3320 /* Parse the part of trace status syntax that is shared between
3321 the remote protocol and the trace file reader. */
3323 extern char *unpack_varlen_hex (char *buff, ULONGEST *result);
3326 parse_trace_status (char *line, struct trace_status *ts)
3328 char *p = line, *p1, *p2, *p_temp;
3331 ts->running_known = 1;
3332 ts->running = (*p++ == '1');
3333 ts->stop_reason = trace_stop_reason_unknown;
3334 xfree (ts->error_desc);
3335 ts->error_desc = NULL;
3336 ts->traceframe_count = -1;
3337 ts->traceframes_created = -1;
3338 ts->buffer_free = -1;
3339 ts->buffer_size = -1;
3340 ts->disconnected_tracing = 0;
3341 ts->circular_buffer = 0;
3345 p1 = strchr (p, ':');
3347 error (_("Malformed trace status, at %s\n\
3348 Status line: '%s'\n"), p, line);
3349 if (strncmp (p, stop_reason_names[trace_buffer_full], p1 - p) == 0)
3351 p = unpack_varlen_hex (++p1, &val);
3352 ts->stop_reason = trace_buffer_full;
3354 else if (strncmp (p, stop_reason_names[trace_never_run], p1 - p) == 0)
3356 p = unpack_varlen_hex (++p1, &val);
3357 ts->stop_reason = trace_never_run;
3359 else if (strncmp (p, stop_reason_names[tracepoint_passcount], p1 - p) == 0)
3361 p = unpack_varlen_hex (++p1, &val);
3362 ts->stop_reason = tracepoint_passcount;
3363 ts->stopping_tracepoint = val;
3365 else if (strncmp (p, stop_reason_names[tstop_command], p1 - p) == 0)
3367 p = unpack_varlen_hex (++p1, &val);
3368 ts->stop_reason = tstop_command;
3370 else if (strncmp (p, stop_reason_names[trace_disconnected], p1 - p) == 0)
3372 p = unpack_varlen_hex (++p1, &val);
3373 ts->stop_reason = trace_disconnected;
3375 else if (strncmp (p, stop_reason_names[tracepoint_error], p1 - p) == 0)
3377 p2 = strchr (++p1, ':');
3382 ts->error_desc = xmalloc ((p2 - p1) / 2 + 1);
3383 end = hex2bin (p1, ts->error_desc, (p2 - p1) / 2);
3384 ts->error_desc[end] = '\0';
3387 ts->error_desc = xstrdup ("");
3389 p = unpack_varlen_hex (++p2, &val);
3390 ts->stopping_tracepoint = val;
3391 ts->stop_reason = tracepoint_error;
3393 else if (strncmp (p, "tframes", p1 - p) == 0)
3395 p = unpack_varlen_hex (++p1, &val);
3396 ts->traceframe_count = val;
3398 else if (strncmp (p, "tcreated", p1 - p) == 0)
3400 p = unpack_varlen_hex (++p1, &val);
3401 ts->traceframes_created = val;
3403 else if (strncmp (p, "tfree", p1 - p) == 0)
3405 p = unpack_varlen_hex (++p1, &val);
3406 ts->buffer_free = val;
3408 else if (strncmp (p, "tsize", p1 - p) == 0)
3410 p = unpack_varlen_hex (++p1, &val);
3411 ts->buffer_size = val;
3413 else if (strncmp (p, "disconn", p1 - p) == 0)
3415 p = unpack_varlen_hex (++p1, &val);
3416 ts->disconnected_tracing = val;
3418 else if (strncmp (p, "circular", p1 - p) == 0)
3420 p = unpack_varlen_hex (++p1, &val);
3421 ts->circular_buffer = val;
3425 /* Silently skip unknown optional info. */
3426 p_temp = strchr (p1 + 1, ';');
3430 /* Must be at the end. */
3436 /* Given a line of text defining a part of a tracepoint, parse it into
3437 an "uploaded tracepoint". */
3440 parse_tracepoint_definition (char *line, struct uploaded_tp **utpp)
3444 ULONGEST num, addr, step, pass, orig_size, xlen, start;
3445 int enabled, i, end;
3447 char *cond, *srctype, *src, *buf;
3448 struct uploaded_tp *utp = NULL;
3451 /* Both tracepoint and action definitions start with the same number
3452 and address sequence. */
3454 p = unpack_varlen_hex (p, &num);
3455 p++; /* skip a colon */
3456 p = unpack_varlen_hex (p, &addr);
3457 p++; /* skip a colon */
3460 enabled = (*p++ == 'E');
3461 p++; /* skip a colon */
3462 p = unpack_varlen_hex (p, &step);
3463 p++; /* skip a colon */
3464 p = unpack_varlen_hex (p, &pass);
3465 type = bp_tracepoint;
3467 /* Thumb through optional fields. */
3470 p++; /* skip a colon */
3473 type = bp_fast_tracepoint;
3475 p = unpack_varlen_hex (p, &orig_size);
3480 p = unpack_varlen_hex (p, &xlen);
3481 p++; /* skip a comma */
3482 cond = (char *) xmalloc (2 * xlen + 1);
3483 strncpy (cond, p, 2 * xlen);
3484 cond[2 * xlen] = '\0';
3488 warning (_("Unrecognized char '%c' in tracepoint definition, skipping rest"), *p);
3490 utp = get_uploaded_tp (num, addr, utpp);
3492 utp->enabled = enabled;
3497 else if (piece == 'A')
3499 utp = get_uploaded_tp (num, addr, utpp);
3500 VEC_safe_push (char_ptr, utp->actions, xstrdup (p));
3502 else if (piece == 'S')
3504 utp = get_uploaded_tp (num, addr, utpp);
3505 VEC_safe_push (char_ptr, utp->step_actions, xstrdup (p));
3507 else if (piece == 'Z')
3509 /* Parse a chunk of source form definition. */
3510 utp = get_uploaded_tp (num, addr, utpp);
3512 p = strchr (p, ':');
3513 p++; /* skip a colon */
3514 p = unpack_varlen_hex (p, &start);
3515 p++; /* skip a colon */
3516 p = unpack_varlen_hex (p, &xlen);
3517 p++; /* skip a colon */
3519 buf = alloca (strlen (line));
3521 end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
3524 if (strncmp (srctype, "at:", strlen ("at:")) == 0)
3525 utp->at_string = xstrdup (buf);
3526 else if (strncmp (srctype, "cond:", strlen ("cond:")) == 0)
3527 utp->cond_string = xstrdup (buf);
3528 else if (strncmp (srctype, "cmd:", strlen ("cmd:")) == 0)
3529 VEC_safe_push (char_ptr, utp->cmd_strings, xstrdup (buf));
3533 /* Don't error out, the target might be sending us optional
3534 info that we don't care about. */
3535 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece);
3539 /* Convert a textual description of a trace state variable into an
3543 parse_tsv_definition (char *line, struct uploaded_tsv **utsvp)
3546 ULONGEST num, initval, builtin;
3548 struct uploaded_tsv *utsv = NULL;
3550 buf = alloca (strlen (line));
3553 p = unpack_varlen_hex (p, &num);
3554 p++; /* skip a colon */
3555 p = unpack_varlen_hex (p, &initval);
3556 p++; /* skip a colon */
3557 p = unpack_varlen_hex (p, &builtin);
3558 p++; /* skip a colon */
3559 end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
3562 utsv = get_uploaded_tsv (num, utsvp);
3563 utsv->initial_value = initval;
3564 utsv->builtin = builtin;
3565 utsv->name = xstrdup (buf);
3568 /* Close the trace file and generally clean up. */
3571 tfile_close (int quitting)
3578 pid = ptid_get_pid (inferior_ptid);
3579 inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
3580 exit_inferior_silent (pid);
3585 xfree (trace_filename);
3589 tfile_files_info (struct target_ops *t)
3591 /* (it would be useful to mention the name of the file) */
3592 printf_filtered ("Looking at a trace file.\n");
3595 /* The trace status for a file is that tracing can never be run. */
3598 tfile_get_trace_status (struct trace_status *ts)
3600 /* Other bits of trace status were collected as part of opening the
3601 trace files, so nothing to do here. */
3606 /* Given the position of a traceframe in the file, figure out what
3607 address the frame was collected at. This would normally be the
3608 value of a collected PC register, but if not available, we
3612 tfile_get_traceframe_address (off_t tframe_offset)
3616 struct breakpoint *tp;
3617 off_t saved_offset = cur_offset;
3620 /* FIXME dig pc out of collected registers */
3622 /* Fall back to using tracepoint address. */
3623 lseek (trace_fd, tframe_offset, SEEK_SET);
3624 gotten = read (trace_fd, &tpnum, 2);
3626 perror_with_name (trace_filename);
3627 else if (gotten < 2)
3628 error (_("Premature end of file while reading trace file"));
3630 tp = get_tracepoint_by_number_on_target (tpnum);
3631 /* FIXME this is a poor heuristic if multiple locations */
3633 addr = tp->loc->address;
3635 /* Restore our seek position. */
3636 cur_offset = saved_offset;
3637 lseek (trace_fd, cur_offset, SEEK_SET);
3641 /* Given a type of search and some parameters, scan the collection of
3642 traceframes in the file looking for a match. When found, return
3643 both the traceframe and tracepoint number, otherwise -1 for
3647 tfile_trace_find (enum trace_find_type type, int num,
3648 ULONGEST addr1, ULONGEST addr2, int *tpp)
3651 int tfnum = 0, found = 0, gotten;
3653 struct breakpoint *tp;
3654 off_t offset, tframe_offset;
3657 lseek (trace_fd, trace_frames_offset, SEEK_SET);
3658 offset = trace_frames_offset;
3661 tframe_offset = offset;
3662 gotten = read (trace_fd, &tpnum, 2);
3664 perror_with_name (trace_filename);
3665 else if (gotten < 2)
3666 error (_("Premature end of file while reading trace file"));
3670 gotten = read (trace_fd, &data_size, 4);
3672 perror_with_name (trace_filename);
3673 else if (gotten < 4)
3674 error (_("Premature end of file while reading trace file"));
3683 tfaddr = tfile_get_traceframe_address (tframe_offset);
3684 if (tfaddr == addr1)
3688 tp = get_tracepoint (num);
3689 if (tp && tpnum == tp->number_on_target)
3693 tfaddr = tfile_get_traceframe_address (tframe_offset);
3694 if (addr1 <= tfaddr && tfaddr <= addr2)
3698 tfaddr = tfile_get_traceframe_address (tframe_offset);
3699 if (!(addr1 <= tfaddr && tfaddr <= addr2))
3703 internal_error (__FILE__, __LINE__, _("unknown tfind type"));
3709 cur_offset = offset;
3710 cur_data_size = data_size;
3713 /* Skip past the traceframe's data. */
3714 lseek (trace_fd, data_size, SEEK_CUR);
3715 offset += data_size;
3716 /* Update our own count of traceframes. */
3719 /* Did not find what we were looking for. */
3725 /* Look for a block of saved registers in the traceframe, and get the
3726 requested register from it. */
3729 tfile_fetch_registers (struct target_ops *ops,
3730 struct regcache *regcache, int regno)
3732 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3734 int i, pos, offset, regn, regsize, gotten, pc_regno;
3735 unsigned short mlen;
3738 /* An uninitialized reg size says we're not going to be
3739 successful at getting register blocks. */
3740 if (!trace_regblock_size)
3743 regs = alloca (trace_regblock_size);
3745 lseek (trace_fd, cur_offset, SEEK_SET);
3747 while (pos < cur_data_size)
3749 gotten = read (trace_fd, &block_type, 1);
3751 perror_with_name (trace_filename);
3752 else if (gotten < 1)
3753 error (_("Premature end of file while reading trace file"));
3759 gotten = read (trace_fd, regs, trace_regblock_size);
3761 perror_with_name (trace_filename);
3762 else if (gotten < trace_regblock_size)
3763 error (_("Premature end of file while reading trace file"));
3765 /* Assume the block is laid out in GDB register number order,
3766 each register with the size that it has in GDB. */
3768 for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
3770 regsize = register_size (gdbarch, regn);
3771 /* Make sure we stay within block bounds. */
3772 if (offset + regsize >= trace_regblock_size)
3774 if (!regcache_valid_p (regcache, regn))
3778 regcache_raw_supply (regcache, regno, regs + offset);
3781 else if (regno == -1)
3783 regcache_raw_supply (regcache, regn, regs + offset);
3790 lseek (trace_fd, 8, SEEK_CUR);
3791 gotten = read (trace_fd, &mlen, 2);
3793 perror_with_name (trace_filename);
3794 else if (gotten < 2)
3795 error (_("Premature end of file while reading trace file"));
3796 lseek (trace_fd, mlen, SEEK_CUR);
3797 pos += (8 + 2 + mlen);
3800 lseek (trace_fd, 4 + 8, SEEK_CUR);
3804 error ("Unknown block type '%c' (0x%x) in trace frame",
3805 block_type, block_type);
3810 /* We get here if no register data has been found. Although we
3811 don't like making up numbers, GDB has all manner of troubles when
3812 the target says some register is not available. Filling in with
3813 zeroes is a reasonable fallback. */
3814 for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
3815 regcache_raw_supply (regcache, regn, NULL);
3817 /* We can often usefully guess that the PC is going to be the same
3818 as the address of the tracepoint. */
3819 pc_regno = gdbarch_pc_regnum (gdbarch);
3820 if (pc_regno >= 0 && (regno == -1 || regno == pc_regno))
3822 struct breakpoint *tp = get_tracepoint (tracepoint_number);
3826 /* But don't try to guess if tracepoint is multi-location... */
3829 warning ("Tracepoint %d has multiple locations, cannot infer $pc",
3833 /* ... or does while-stepping. */
3834 if (tp->step_count > 0)
3836 warning ("Tracepoint %d does while-stepping, cannot infer $pc",
3841 store_unsigned_integer (regs, register_size (gdbarch, pc_regno),
3842 gdbarch_byte_order (gdbarch),
3844 regcache_raw_supply (regcache, pc_regno, regs);
3850 tfile_xfer_partial (struct target_ops *ops, enum target_object object,
3851 const char *annex, gdb_byte *readbuf,
3852 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
3856 ULONGEST maddr, amt;
3857 unsigned short mlen;
3859 /* We're only doing regular memory for now. */
3860 if (object != TARGET_OBJECT_MEMORY)
3863 if (readbuf == NULL)
3864 error ("tfile_xfer_partial: trace file is read-only");
3866 lseek (trace_fd, cur_offset, SEEK_SET);
3868 while (pos < cur_data_size)
3870 gotten = read (trace_fd, &block_type, 1);
3872 perror_with_name (trace_filename);
3873 else if (gotten < 1)
3874 error (_("Premature end of file while reading trace file"));
3879 lseek (trace_fd, trace_regblock_size, SEEK_CUR);
3880 pos += trace_regblock_size;
3883 gotten = read (trace_fd, &maddr, 8);
3885 perror_with_name (trace_filename);
3886 else if (gotten < 8)
3887 error (_("Premature end of file while reading trace file"));
3889 gotten = read (trace_fd, &mlen, 2);
3891 perror_with_name (trace_filename);
3892 else if (gotten < 2)
3893 error (_("Premature end of file while reading trace file"));
3894 /* If the block includes the first part of the desired
3895 range, return as much it has; GDB will re-request the
3896 remainder, which might be in a different block of this
3898 if (maddr <= offset && offset < (maddr + mlen))
3900 amt = (maddr + mlen) - offset;
3904 gotten = read (trace_fd, readbuf, amt);
3906 perror_with_name (trace_filename);
3907 /* While it's acceptable to return less than was
3908 originally asked for, it's not acceptable to return
3909 less than what this block claims to contain. */
3910 else if (gotten < amt)
3911 error (_("Premature end of file while reading trace file"));
3914 lseek (trace_fd, mlen, SEEK_CUR);
3915 pos += (8 + 2 + mlen);
3918 lseek (trace_fd, 4 + 8, SEEK_CUR);
3922 error ("Unknown block type '%c' (0x%x) in traceframe",
3923 block_type, block_type);
3928 /* It's unduly pedantic to refuse to look at the executable for
3929 read-only pieces; so do the equivalent of readonly regions aka
3931 /* FIXME account for relocation at some point */
3938 for (s = exec_bfd->sections; s; s = s->next)
3940 if ((s->flags & SEC_LOAD) == 0 ||
3941 (s->flags & SEC_READONLY) == 0)
3945 size = bfd_get_section_size (s);
3946 if (lma <= offset && offset < (lma + size))
3948 amt = (lma + size) - offset;
3952 amt = bfd_get_section_contents (exec_bfd, s,
3953 readbuf, offset - lma, amt);
3959 /* Indicate failure to find the requested memory block. */
3963 /* Iterate through the blocks of a trace frame, looking for a 'V'
3964 block with a matching tsv number. */
3967 tfile_get_trace_state_variable_value (int tsvnum, LONGEST *val)
3970 int pos, vnum, gotten;
3971 unsigned short mlen;
3973 lseek (trace_fd, cur_offset, SEEK_SET);
3975 while (pos < cur_data_size)
3977 gotten = read (trace_fd, &block_type, 1);
3979 perror_with_name (trace_filename);
3980 else if (gotten < 1)
3981 error (_("Premature end of file while reading trace file"));
3986 lseek (trace_fd, trace_regblock_size, SEEK_CUR);
3987 pos += trace_regblock_size;
3990 lseek (trace_fd, 8, SEEK_CUR);
3991 gotten = read (trace_fd, &mlen, 2);
3993 perror_with_name (trace_filename);
3994 else if (gotten < 2)
3995 error (_("Premature end of file while reading trace file"));
3996 lseek (trace_fd, mlen, SEEK_CUR);
3997 pos += (8 + 2 + mlen);
4000 gotten = read (trace_fd, &vnum, 4);
4002 perror_with_name (trace_filename);
4003 else if (gotten < 4)
4004 error (_("Premature end of file while reading trace file"));
4007 gotten = read (trace_fd, val, 8);
4009 perror_with_name (trace_filename);
4010 else if (gotten < 8)
4011 error (_("Premature end of file while reading trace file"));
4014 lseek (trace_fd, 8, SEEK_CUR);
4018 error ("Unknown block type '%c' (0x%x) in traceframe",
4019 block_type, block_type);
4023 /* Didn't find anything. */
4028 tfile_has_all_memory (struct target_ops *ops)
4034 tfile_has_memory (struct target_ops *ops)
4040 tfile_has_stack (struct target_ops *ops)
4046 tfile_has_registers (struct target_ops *ops)
4052 init_tfile_ops (void)
4054 tfile_ops.to_shortname = "tfile";
4055 tfile_ops.to_longname = "Local trace dump file";
4057 "Use a trace file as a target. Specify the filename of the trace file.";
4058 tfile_ops.to_open = tfile_open;
4059 tfile_ops.to_close = tfile_close;
4060 tfile_ops.to_fetch_registers = tfile_fetch_registers;
4061 tfile_ops.to_xfer_partial = tfile_xfer_partial;
4062 tfile_ops.to_files_info = tfile_files_info;
4063 tfile_ops.to_get_trace_status = tfile_get_trace_status;
4064 tfile_ops.to_trace_find = tfile_trace_find;
4065 tfile_ops.to_get_trace_state_variable_value = tfile_get_trace_state_variable_value;
4066 /* core_stratum might seem more logical, but GDB doesn't like having
4067 more than one core_stratum vector. */
4068 tfile_ops.to_stratum = process_stratum;
4069 tfile_ops.to_has_all_memory = tfile_has_all_memory;
4070 tfile_ops.to_has_memory = tfile_has_memory;
4071 tfile_ops.to_has_stack = tfile_has_stack;
4072 tfile_ops.to_has_registers = tfile_has_registers;
4073 tfile_ops.to_magic = OPS_MAGIC;
4076 /* module initialization */
4078 _initialize_tracepoint (void)
4080 struct cmd_list_element *c;
4082 traceframe_number = -1;
4083 tracepoint_number = -1;
4085 if (tracepoint_list.list == NULL)
4087 tracepoint_list.listsize = 128;
4088 tracepoint_list.list = xmalloc
4089 (tracepoint_list.listsize * sizeof (struct memrange));
4091 if (tracepoint_list.aexpr_list == NULL)
4093 tracepoint_list.aexpr_listsize = 128;
4094 tracepoint_list.aexpr_list = xmalloc
4095 (tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *));
4098 if (stepping_list.list == NULL)
4100 stepping_list.listsize = 128;
4101 stepping_list.list = xmalloc
4102 (stepping_list.listsize * sizeof (struct memrange));
4105 if (stepping_list.aexpr_list == NULL)
4107 stepping_list.aexpr_listsize = 128;
4108 stepping_list.aexpr_list = xmalloc
4109 (stepping_list.aexpr_listsize * sizeof (struct agent_expr *));
4112 add_info ("scope", scope_info,
4113 _("List the variables local to a scope"));
4115 add_cmd ("tracepoints", class_trace, NULL,
4116 _("Tracing of program execution without stopping the program."),
4119 add_com ("tdump", class_trace, trace_dump_command,
4120 _("Print everything collected at the current tracepoint."));
4122 add_com ("tsave", class_trace, trace_save_command, _("\
4123 Save the trace data to a file.\n\
4124 Use the '-r' option to direct the target to save directly to the file,\n\
4125 using its own filesystem."));
4127 c = add_com ("tvariable", class_trace, trace_variable_command,_("\
4128 Define a trace state variable.\n\
4129 Argument is a $-prefixed name, optionally followed\n\
4130 by '=' and an expression that sets the initial value\n\
4131 at the start of tracing."));
4132 set_cmd_completer (c, expression_completer);
4134 add_cmd ("tvariable", class_trace, delete_trace_variable_command, _("\
4135 Delete one or more trace state variables.\n\
4136 Arguments are the names of the variables to delete.\n\
4137 If no arguments are supplied, delete all variables."), &deletelist);
4138 /* FIXME add a trace variable completer */
4140 add_info ("tvariables", tvariables_info, _("\
4141 Status of trace state variables and their values.\n\
4144 add_prefix_cmd ("tfind", class_trace, trace_find_command, _("\
4145 Select a trace frame;\n\
4146 No argument means forward by one frame; '-' means backward by one frame."),
4147 &tfindlist, "tfind ", 1, &cmdlist);
4149 add_cmd ("outside", class_trace, trace_find_outside_command, _("\
4150 Select a trace frame whose PC is outside the given range (exclusive).\n\
4151 Usage: tfind outside addr1, addr2"),
4154 add_cmd ("range", class_trace, trace_find_range_command, _("\
4155 Select a trace frame whose PC is in the given range (inclusive).\n\
4156 Usage: tfind range addr1,addr2"),
4159 add_cmd ("line", class_trace, trace_find_line_command, _("\
4160 Select a trace frame by source line.\n\
4161 Argument can be a line number (with optional source file), \n\
4162 a function name, or '*' followed by an address.\n\
4163 Default argument is 'the next source line that was traced'."),
4166 add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, _("\
4167 Select a trace frame by tracepoint number.\n\
4168 Default is the tracepoint for the current trace frame."),
4171 add_cmd ("pc", class_trace, trace_find_pc_command, _("\
4172 Select a trace frame by PC.\n\
4173 Default is the current PC, or the PC of the current trace frame."),
4176 add_cmd ("end", class_trace, trace_find_end_command, _("\
4177 Synonym for 'none'.\n\
4178 De-select any trace frame and resume 'live' debugging."),
4181 add_cmd ("none", class_trace, trace_find_none_command,
4182 _("De-select any trace frame and resume 'live' debugging."),
4185 add_cmd ("start", class_trace, trace_find_start_command,
4186 _("Select the first trace frame in the trace buffer."),
4189 add_com ("tstatus", class_trace, trace_status_command,
4190 _("Display the status of the current trace data collection."));
4192 add_com ("tstop", class_trace, trace_stop_command,
4193 _("Stop trace data collection."));
4195 add_com ("tstart", class_trace, trace_start_command,
4196 _("Start trace data collection."));
4198 add_com ("end", class_trace, end_actions_pseudocommand, _("\
4199 Ends a list of commands or actions.\n\
4200 Several GDB commands allow you to enter a list of commands or actions.\n\
4201 Entering \"end\" on a line by itself is the normal way to terminate\n\
4203 Note: the \"end\" command cannot be used at the gdb prompt."));
4205 add_com ("while-stepping", class_trace, while_stepping_pseudocommand, _("\
4206 Specify single-stepping behavior at a tracepoint.\n\
4207 Argument is number of instructions to trace in single-step mode\n\
4208 following the tracepoint. This command is normally followed by\n\
4209 one or more \"collect\" commands, to specify what to collect\n\
4210 while single-stepping.\n\n\
4211 Note: this command can only be used in a tracepoint \"actions\" list."));
4213 add_com_alias ("ws", "while-stepping", class_alias, 0);
4214 add_com_alias ("stepping", "while-stepping", class_alias, 0);
4216 add_com ("collect", class_trace, collect_pseudocommand, _("\
4217 Specify one or more data items to be collected at a tracepoint.\n\
4218 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
4219 collect all data (variables, registers) referenced by that expression.\n\
4220 Also accepts the following special arguments:\n\
4221 $regs -- all registers.\n\
4222 $args -- all function arguments.\n\
4223 $locals -- all variables local to the block/function scope.\n\
4224 Note: this command can only be used in a tracepoint \"actions\" list."));
4226 add_com ("teval", class_trace, teval_pseudocommand, _("\
4227 Specify one or more expressions to be evaluated at a tracepoint.\n\
4228 Accepts a comma-separated list of (one or more) expressions.\n\
4229 The result of each evaluation will be discarded.\n\
4230 Note: this command can only be used in a tracepoint \"actions\" list."));
4232 add_com ("actions", class_trace, trace_actions_command, _("\
4233 Specify the actions to be taken at a tracepoint.\n\
4234 Tracepoint actions may include collecting of specified data, \n\
4235 single-stepping, or enabling/disabling other tracepoints, \n\
4236 depending on target's capabilities."));
4238 default_collect = xstrdup ("");
4239 add_setshow_string_cmd ("default-collect", class_trace,
4240 &default_collect, _("\
4241 Set the list of expressions to collect by default"), _("\
4242 Show the list of expressions to collect by default"), NULL,
4244 &setlist, &showlist);
4246 add_setshow_boolean_cmd ("disconnected-tracing", no_class,
4247 &disconnected_tracing, _("\
4248 Set whether tracing continues after GDB disconnects."), _("\
4249 Show whether tracing continues after GDB disconnects."), _("\
4250 Use this to continue a tracing run even if GDB disconnects\n\
4251 or detaches from the target. You can reconnect later and look at\n\
4252 trace data collected in the meantime."),
4253 set_disconnected_tracing,
4258 add_setshow_boolean_cmd ("circular-trace-buffer", no_class,
4259 &circular_trace_buffer, _("\
4260 Set target's use of circular trace buffer."), _("\
4261 Show target's use of circular trace buffer."), _("\
4262 Use this to make the trace buffer into a circular buffer,\n\
4263 which will discard traceframes (oldest first) instead of filling\n\
4264 up and stopping the trace run."),
4265 set_circular_trace_buffer,
4272 add_target (&tfile_ops);