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));
371 /* Create a new variable. */
372 tsv = create_trace_state_variable (internalvar_name (intvar));
373 tsv->initial_value = initval;
375 printf_filtered (_("Trace state variable $%s created, with initial value %s.\n"),
376 tsv->name, plongest (tsv->initial_value));
378 do_cleanups (old_chain);
382 delete_trace_variable_command (char *args, int from_tty)
386 struct cleanup *back_to;
387 struct trace_state_variable *tsv;
391 if (query (_("Delete all trace state variables? ")))
392 VEC_free (tsv_s, tvariables);
397 argv = gdb_buildargv (args);
398 back_to = make_cleanup_freeargv (argv);
400 for (i = 0; argv[i] != NULL; i++)
403 delete_trace_state_variable (argv[i] + 1);
405 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv[i]);
408 do_cleanups (back_to);
414 tvariables_info_1 (void)
416 struct trace_state_variable *tsv;
419 struct cleanup *back_to;
421 if (VEC_length (tsv_s, tvariables) == 0 && !ui_out_is_mi_like_p (uiout))
423 printf_filtered (_("No trace state variables.\n"));
427 /* Try to acquire values from the target. */
428 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix, ++count)
429 tsv->value_known = target_get_trace_state_variable_value (tsv->number,
432 back_to = make_cleanup_ui_out_table_begin_end (uiout, 3,
433 count, "trace-variables");
434 ui_out_table_header (uiout, 15, ui_left, "name", "Name");
435 ui_out_table_header (uiout, 11, ui_left, "initial", "Initial");
436 ui_out_table_header (uiout, 11, ui_left, "current", "Current");
438 ui_out_table_body (uiout);
440 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
442 struct cleanup *back_to2;
446 back_to2 = make_cleanup_ui_out_tuple_begin_end (uiout, "variable");
448 name = concat ("$", tsv->name, NULL);
449 make_cleanup (xfree, name);
450 ui_out_field_string (uiout, "name", name);
451 ui_out_field_string (uiout, "initial", plongest (tsv->initial_value));
453 if (tsv->value_known)
454 c = plongest (tsv->value);
455 else if (ui_out_is_mi_like_p (uiout))
456 /* For MI, we prefer not to use magic string constants, but rather
457 omit the field completely. The difference between unknown and
458 undefined does not seem important enough to represent. */
460 else if (current_trace_status ()->running || traceframe_number >= 0)
461 /* The value is/was defined, but we don't have it. */
464 /* It is not meaningful to ask about the value. */
467 ui_out_field_string (uiout, "current", c);
468 ui_out_text (uiout, "\n");
470 do_cleanups (back_to2);
473 do_cleanups (back_to);
476 /* List all the trace state variables. */
479 tvariables_info (char *args, int from_tty)
481 tvariables_info_1 ();
484 /* Stash definitions of tsvs into the given file. */
487 save_trace_state_variables (struct ui_file *fp)
489 struct trace_state_variable *tsv;
492 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
494 fprintf_unfiltered (fp, "tvariable $%s", tsv->name);
495 if (tsv->initial_value)
496 fprintf_unfiltered (fp, " = %s", plongest (tsv->initial_value));
497 fprintf_unfiltered (fp, "\n");
501 /* ACTIONS functions: */
503 /* The three functions:
504 collect_pseudocommand,
505 while_stepping_pseudocommand, and
506 end_actions_pseudocommand
507 are placeholders for "commands" that are actually ONLY to be used
508 within a tracepoint action list. If the actual function is ever called,
509 it means that somebody issued the "command" at the top level,
510 which is always an error. */
513 end_actions_pseudocommand (char *args, int from_tty)
515 error (_("This command cannot be used at the top level."));
519 while_stepping_pseudocommand (char *args, int from_tty)
521 error (_("This command can only be used in a tracepoint actions list."));
525 collect_pseudocommand (char *args, int from_tty)
527 error (_("This command can only be used in a tracepoint actions list."));
531 teval_pseudocommand (char *args, int from_tty)
533 error (_("This command can only be used in a tracepoint actions list."));
536 /* Enter a list of actions for a tracepoint. */
538 trace_actions_command (char *args, int from_tty)
540 struct breakpoint *t;
541 struct command_line *l;
543 t = get_tracepoint_by_number (&args, 0, 1);
547 xstrprintf ("Enter actions for tracepoint %d, one per line.",
549 struct cleanup *cleanups = make_cleanup (xfree, tmpbuf);
551 l = read_command_lines (tmpbuf, from_tty, 1, check_tracepoint_command, t);
552 do_cleanups (cleanups);
553 breakpoint_set_commands (t, l);
555 /* else just return */
558 /* Report the results of checking the agent expression, as errors or
562 report_agent_reqs_errors (struct agent_expr *aexpr, struct agent_reqs *areqs)
564 /* All of the "flaws" are serious bytecode generation issues that
565 should never occur. */
566 if (areqs->flaw != agent_flaw_none)
567 internal_error (__FILE__, __LINE__, _("expression is malformed"));
569 /* If analysis shows a stack underflow, GDB must have done something
570 badly wrong in its bytecode generation. */
571 if (areqs->min_height < 0)
572 internal_error (__FILE__, __LINE__,
573 _("expression has min height < 0"));
575 /* Issue this error if the stack is predicted to get too deep. The
576 limit is rather arbitrary; a better scheme might be for the
577 target to report how much stack it will have available. The
578 depth roughly corresponds to parenthesization, so a limit of 20
579 amounts to 20 levels of expression nesting, which is actually
580 a pretty big hairy expression. */
581 if (areqs->max_height > 20)
582 error (_("Expression is too complicated."));
585 /* worker function */
587 validate_actionline (char **line, struct breakpoint *t)
589 struct cmd_list_element *c;
590 struct expression *exp = NULL;
591 struct cleanup *old_chain = NULL;
593 struct bp_location *loc;
594 struct agent_expr *aexpr;
595 struct agent_reqs areqs;
597 /* if EOF is typed, *line is NULL */
601 for (p = *line; isspace ((int) *p);)
604 /* Symbol lookup etc. */
605 if (*p == '\0') /* empty line: just prompt for another line. */
608 if (*p == '#') /* comment line */
611 c = lookup_cmd (&p, cmdlist, "", -1, 1);
613 error (_("`%s' is not a tracepoint action, or is ambiguous."), p);
615 if (cmd_cfunc_eq (c, collect_pseudocommand))
618 { /* repeat over a comma-separated list */
619 QUIT; /* allow user to bail out with ^C */
620 while (isspace ((int) *p))
623 if (*p == '$') /* look for special pseudo-symbols */
625 if ((0 == strncasecmp ("reg", p + 1, 3)) ||
626 (0 == strncasecmp ("arg", p + 1, 3)) ||
627 (0 == strncasecmp ("loc", p + 1, 3)))
632 /* else fall thru, treat p as an expression and parse it! */
635 for (loc = t->loc; loc; loc = loc->next)
638 exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
639 old_chain = make_cleanup (free_current_contents, &exp);
641 if (exp->elts[0].opcode == OP_VAR_VALUE)
643 if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST)
645 error (_("constant `%s' (value %ld) will not be collected."),
646 SYMBOL_PRINT_NAME (exp->elts[2].symbol),
647 SYMBOL_VALUE (exp->elts[2].symbol));
649 else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT)
651 error (_("`%s' is optimized away and cannot be collected."),
652 SYMBOL_PRINT_NAME (exp->elts[2].symbol));
656 /* We have something to collect, make sure that the expr to
657 bytecode translator can handle it and that it's not too
659 aexpr = gen_trace_for_expr (loc->address, exp);
660 make_cleanup_free_agent_expr (aexpr);
662 if (aexpr->len > MAX_AGENT_EXPR_LEN)
663 error (_("Expression is too complicated."));
665 ax_reqs (aexpr, &areqs);
666 (void) make_cleanup (xfree, areqs.reg_mask);
668 report_agent_reqs_errors (aexpr, &areqs);
670 do_cleanups (old_chain);
673 while (p && *p++ == ',');
676 else if (cmd_cfunc_eq (c, teval_pseudocommand))
679 { /* repeat over a comma-separated list */
680 QUIT; /* allow user to bail out with ^C */
681 while (isspace ((int) *p))
685 for (loc = t->loc; loc; loc = loc->next)
688 /* Only expressions are allowed for this action. */
689 exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
690 old_chain = make_cleanup (free_current_contents, &exp);
692 /* We have something to evaluate, make sure that the expr to
693 bytecode translator can handle it and that it's not too
695 aexpr = gen_eval_for_expr (loc->address, exp);
696 make_cleanup_free_agent_expr (aexpr);
698 if (aexpr->len > MAX_AGENT_EXPR_LEN)
699 error (_("Expression is too complicated."));
701 ax_reqs (aexpr, &areqs);
702 (void) make_cleanup (xfree, areqs.reg_mask);
704 report_agent_reqs_errors (aexpr, &areqs);
706 do_cleanups (old_chain);
709 while (p && *p++ == ',');
712 else if (cmd_cfunc_eq (c, while_stepping_pseudocommand))
714 char *steparg; /* in case warning is necessary */
716 while (isspace ((int) *p))
720 if (*p == '\0' || (t->step_count = strtol (p, &p, 0)) == 0)
721 error (_("while-stepping step count `%s' is malformed."), *line);
724 else if (cmd_cfunc_eq (c, end_actions_pseudocommand))
728 error (_("`%s' is not a supported tracepoint action."), *line);
732 memrange_absolute = -1
737 int type; /* memrange_absolute for absolute memory range,
738 else basereg number */
739 bfd_signed_vma start;
743 struct collection_list
745 unsigned char regs_mask[32]; /* room for up to 256 regs */
748 struct memrange *list;
749 long aexpr_listsize; /* size of array pointed to by expr_list elt */
751 struct agent_expr **aexpr_list;
754 tracepoint_list, stepping_list;
756 /* MEMRANGE functions: */
758 static int memrange_cmp (const void *, const void *);
760 /* compare memranges for qsort */
762 memrange_cmp (const void *va, const void *vb)
764 const struct memrange *a = va, *b = vb;
766 if (a->type < b->type)
768 if (a->type > b->type)
770 if (a->type == memrange_absolute)
772 if ((bfd_vma) a->start < (bfd_vma) b->start)
774 if ((bfd_vma) a->start > (bfd_vma) b->start)
779 if (a->start < b->start)
781 if (a->start > b->start)
787 /* Sort the memrange list using qsort, and merge adjacent memranges. */
789 memrange_sortmerge (struct collection_list *memranges)
793 qsort (memranges->list, memranges->next_memrange,
794 sizeof (struct memrange), memrange_cmp);
795 if (memranges->next_memrange > 0)
797 for (a = 0, b = 1; b < memranges->next_memrange; b++)
799 if (memranges->list[a].type == memranges->list[b].type &&
800 memranges->list[b].start - memranges->list[a].end <=
803 /* memrange b starts before memrange a ends; merge them. */
804 if (memranges->list[b].end > memranges->list[a].end)
805 memranges->list[a].end = memranges->list[b].end;
806 continue; /* next b, same a */
810 memcpy (&memranges->list[a], &memranges->list[b],
811 sizeof (struct memrange));
813 memranges->next_memrange = a + 1;
817 /* Add a register to a collection list. */
819 add_register (struct collection_list *collection, unsigned int regno)
822 printf_filtered ("collect register %d\n", regno);
823 if (regno >= (8 * sizeof (collection->regs_mask)))
824 error (_("Internal: register number %d too large for tracepoint"),
826 collection->regs_mask[regno / 8] |= 1 << (regno % 8);
829 /* Add a memrange to a collection list */
831 add_memrange (struct collection_list *memranges,
832 int type, bfd_signed_vma base,
837 printf_filtered ("(%d,", type);
839 printf_filtered (",%ld)\n", len);
842 /* type: memrange_absolute == memory, other n == basereg */
843 memranges->list[memranges->next_memrange].type = type;
844 /* base: addr if memory, offset if reg relative. */
845 memranges->list[memranges->next_memrange].start = base;
846 /* len: we actually save end (base + len) for convenience */
847 memranges->list[memranges->next_memrange].end = base + len;
848 memranges->next_memrange++;
849 if (memranges->next_memrange >= memranges->listsize)
851 memranges->listsize *= 2;
852 memranges->list = xrealloc (memranges->list,
853 memranges->listsize);
856 if (type != memrange_absolute) /* Better collect the base register! */
857 add_register (memranges, type);
860 /* Add a symbol to a collection list. */
862 collect_symbol (struct collection_list *collect,
864 struct gdbarch *gdbarch,
865 long frame_regno, long frame_offset,
870 bfd_signed_vma offset;
871 int treat_as_expr = 0;
873 len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)));
874 switch (SYMBOL_CLASS (sym))
877 printf_filtered ("%s: don't know symbol class %d\n",
878 SYMBOL_PRINT_NAME (sym),
882 printf_filtered ("constant %s (value %ld) will not be collected.\n",
883 SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE (sym));
886 offset = SYMBOL_VALUE_ADDRESS (sym);
891 sprintf_vma (tmp, offset);
892 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
893 SYMBOL_PRINT_NAME (sym), len,
896 /* A struct may be a C++ class with static fields, go to general
897 expression handling. */
898 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
901 add_memrange (collect, memrange_absolute, offset, len);
904 reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
906 printf_filtered ("LOC_REG[parm] %s: ",
907 SYMBOL_PRINT_NAME (sym));
908 add_register (collect, reg);
909 /* Check for doubles stored in two registers. */
910 /* FIXME: how about larger types stored in 3 or more regs? */
911 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
912 len > register_size (gdbarch, reg))
913 add_register (collect, reg + 1);
916 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
917 printf_filtered (" (will not collect %s)\n",
918 SYMBOL_PRINT_NAME (sym));
922 offset = frame_offset + SYMBOL_VALUE (sym);
925 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
926 SYMBOL_PRINT_NAME (sym), len);
928 printf_filtered (" from frame ptr reg %d\n", reg);
930 add_memrange (collect, reg, offset, len);
932 case LOC_REGPARM_ADDR:
933 reg = SYMBOL_VALUE (sym);
937 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
938 SYMBOL_PRINT_NAME (sym), len);
940 printf_filtered (" from reg %d\n", reg);
942 add_memrange (collect, reg, offset, len);
946 offset = frame_offset + SYMBOL_VALUE (sym);
949 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
950 SYMBOL_PRINT_NAME (sym), len);
952 printf_filtered (" from frame ptr reg %d\n", reg);
954 add_memrange (collect, reg, offset, len);
961 case LOC_OPTIMIZED_OUT:
962 printf_filtered ("%s has been optimized out of existence.\n",
963 SYMBOL_PRINT_NAME (sym));
971 /* Expressions are the most general case. */
974 struct agent_expr *aexpr;
975 struct cleanup *old_chain1 = NULL;
976 struct agent_reqs areqs;
978 aexpr = gen_trace_for_var (scope, gdbarch, sym);
980 /* It can happen that the symbol is recorded as a computed
981 location, but it's been optimized away and doesn't actually
982 have a location expression. */
985 printf_filtered ("%s has been optimized out of existence.\n",
986 SYMBOL_PRINT_NAME (sym));
990 old_chain1 = make_cleanup_free_agent_expr (aexpr);
992 ax_reqs (aexpr, &areqs);
994 report_agent_reqs_errors (aexpr, &areqs);
996 discard_cleanups (old_chain1);
997 add_aexpr (collect, aexpr);
999 /* take care of the registers */
1000 if (areqs.reg_mask_len > 0)
1004 for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
1006 QUIT; /* allow user to bail out with ^C */
1007 if (areqs.reg_mask[ndx1] != 0)
1009 /* assume chars have 8 bits */
1010 for (ndx2 = 0; ndx2 < 8; ndx2++)
1011 if (areqs.reg_mask[ndx1] & (1 << ndx2))
1012 /* it's used -- record it */
1013 add_register (collect, ndx1 * 8 + ndx2);
1020 /* Data to be passed around in the calls to the locals and args
1023 struct add_local_symbols_data
1025 struct collection_list *collect;
1026 struct gdbarch *gdbarch;
1033 /* The callback for the locals and args iterators */
1036 do_collect_symbol (const char *print_name,
1040 struct add_local_symbols_data *p = cb_data;
1042 collect_symbol (p->collect, sym, p->gdbarch, p->frame_regno,
1043 p->frame_offset, p->pc);
1047 /* Add all locals (or args) symbols to collection list */
1049 add_local_symbols (struct collection_list *collect,
1050 struct gdbarch *gdbarch, CORE_ADDR pc,
1051 long frame_regno, long frame_offset, int type)
1053 struct block *block;
1054 struct add_local_symbols_data cb_data;
1056 cb_data.collect = collect;
1057 cb_data.gdbarch = gdbarch;
1059 cb_data.frame_regno = frame_regno;
1060 cb_data.frame_offset = frame_offset;
1065 block = block_for_pc (pc);
1068 warning (_("Can't collect locals; "
1069 "no symbol table info available.\n"));
1073 iterate_over_block_local_vars (block, do_collect_symbol, &cb_data);
1074 if (cb_data.count == 0)
1075 warning (_("No locals found in scope."));
1079 pc = get_pc_function_start (pc);
1080 block = block_for_pc (pc);
1083 warning (_("Can't collect args; no symbol table info available.\n"));
1087 iterate_over_block_arg_vars (block, do_collect_symbol, &cb_data);
1088 if (cb_data.count == 0)
1089 warning (_("No args found in scope."));
1093 /* worker function */
1095 clear_collection_list (struct collection_list *list)
1099 list->next_memrange = 0;
1100 for (ndx = 0; ndx < list->next_aexpr_elt; ndx++)
1102 free_agent_expr (list->aexpr_list[ndx]);
1103 list->aexpr_list[ndx] = NULL;
1105 list->next_aexpr_elt = 0;
1106 memset (list->regs_mask, 0, sizeof (list->regs_mask));
1109 /* reduce a collection list to string form (for gdb protocol) */
1111 stringify_collection_list (struct collection_list *list, char *string)
1113 char temp_buf[2048];
1117 char *(*str_list)[];
1121 count = 1 + list->next_memrange + list->next_aexpr_elt + 1;
1122 str_list = (char *(*)[]) xmalloc (count * sizeof (char *));
1124 for (i = sizeof (list->regs_mask) - 1; i > 0; i--)
1125 if (list->regs_mask[i] != 0) /* skip leading zeroes in regs_mask */
1127 if (list->regs_mask[i] != 0) /* prepare to send regs_mask to the stub */
1130 printf_filtered ("\nCollecting registers (mask): 0x");
1135 QUIT; /* allow user to bail out with ^C */
1137 printf_filtered ("%02X", list->regs_mask[i]);
1138 sprintf (end, "%02X", list->regs_mask[i]);
1141 (*str_list)[ndx] = xstrdup (temp_buf);
1145 printf_filtered ("\n");
1146 if (list->next_memrange > 0 && info_verbose)
1147 printf_filtered ("Collecting memranges: \n");
1148 for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++)
1150 QUIT; /* allow user to bail out with ^C */
1151 sprintf_vma (tmp2, list->list[i].start);
1154 printf_filtered ("(%d, %s, %ld)\n",
1157 (long) (list->list[i].end - list->list[i].start));
1159 if (count + 27 > MAX_AGENT_EXPR_LEN)
1161 (*str_list)[ndx] = savestring (temp_buf, count);
1168 bfd_signed_vma length = list->list[i].end - list->list[i].start;
1170 /* The "%X" conversion specifier expects an unsigned argument,
1171 so passing -1 (memrange_absolute) to it directly gives you
1172 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1174 if (list->list[i].type == memrange_absolute)
1175 sprintf (end, "M-1,%s,%lX", tmp2, (long) length);
1177 sprintf (end, "M%X,%s,%lX", list->list[i].type, tmp2, (long) length);
1180 count += strlen (end);
1181 end = temp_buf + count;
1184 for (i = 0; i < list->next_aexpr_elt; i++)
1186 QUIT; /* allow user to bail out with ^C */
1187 if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN)
1189 (*str_list)[ndx] = savestring (temp_buf, count);
1194 sprintf (end, "X%08X,", list->aexpr_list[i]->len);
1195 end += 10; /* 'X' + 8 hex digits + ',' */
1198 end = mem2hex (list->aexpr_list[i]->buf,
1199 end, list->aexpr_list[i]->len);
1200 count += 2 * list->aexpr_list[i]->len;
1205 (*str_list)[ndx] = savestring (temp_buf, count);
1210 (*str_list)[ndx] = NULL;
1223 encode_actions_1 (struct command_line *action,
1224 struct breakpoint *t,
1225 struct bp_location *tloc,
1227 LONGEST frame_offset,
1228 struct collection_list *collect,
1229 struct collection_list *stepping_list)
1232 struct expression *exp = NULL;
1233 struct command_line *actions;
1235 struct value *tempval;
1236 struct cmd_list_element *cmd;
1237 struct agent_expr *aexpr;
1239 for (; action; action = action->next)
1241 QUIT; /* allow user to bail out with ^C */
1242 action_exp = action->line;
1243 while (isspace ((int) *action_exp))
1246 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
1248 error (_("Bad action list item: %s"), action_exp);
1250 if (cmd_cfunc_eq (cmd, collect_pseudocommand))
1253 { /* repeat over a comma-separated list */
1254 QUIT; /* allow user to bail out with ^C */
1255 while (isspace ((int) *action_exp))
1258 if (0 == strncasecmp ("$reg", action_exp, 4))
1260 for (i = 0; i < gdbarch_num_regs (t->gdbarch); i++)
1261 add_register (collect, i);
1262 action_exp = strchr (action_exp, ','); /* more? */
1264 else if (0 == strncasecmp ("$arg", action_exp, 4))
1266 add_local_symbols (collect,
1272 action_exp = strchr (action_exp, ','); /* more? */
1274 else if (0 == strncasecmp ("$loc", action_exp, 4))
1276 add_local_symbols (collect,
1282 action_exp = strchr (action_exp, ','); /* more? */
1286 unsigned long addr, len;
1287 struct cleanup *old_chain = NULL;
1288 struct cleanup *old_chain1 = NULL;
1289 struct agent_reqs areqs;
1291 exp = parse_exp_1 (&action_exp,
1292 block_for_pc (tloc->address), 1);
1293 old_chain = make_cleanup (free_current_contents, &exp);
1295 switch (exp->elts[0].opcode)
1299 const char *name = &exp->elts[2].string;
1301 i = user_reg_map_name_to_regnum (t->gdbarch,
1302 name, strlen (name));
1304 internal_error (__FILE__, __LINE__,
1305 _("Register $%s not available"),
1308 printf_filtered ("OP_REGISTER: ");
1309 add_register (collect, i);
1314 /* safe because we know it's a simple expression */
1315 tempval = evaluate_expression (exp);
1316 addr = value_address (tempval);
1317 len = TYPE_LENGTH (check_typedef (exp->elts[1].type));
1318 add_memrange (collect, memrange_absolute, addr, len);
1322 collect_symbol (collect,
1323 exp->elts[2].symbol,
1330 default: /* full-fledged expression */
1331 aexpr = gen_trace_for_expr (tloc->address, exp);
1333 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1335 ax_reqs (aexpr, &areqs);
1337 report_agent_reqs_errors (aexpr, &areqs);
1339 discard_cleanups (old_chain1);
1340 add_aexpr (collect, aexpr);
1342 /* take care of the registers */
1343 if (areqs.reg_mask_len > 0)
1348 for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
1350 QUIT; /* allow user to bail out with ^C */
1351 if (areqs.reg_mask[ndx1] != 0)
1353 /* assume chars have 8 bits */
1354 for (ndx2 = 0; ndx2 < 8; ndx2++)
1355 if (areqs.reg_mask[ndx1] & (1 << ndx2))
1356 /* it's used -- record it */
1357 add_register (collect,
1364 do_cleanups (old_chain);
1367 while (action_exp && *action_exp++ == ',');
1369 else if (cmd_cfunc_eq (cmd, teval_pseudocommand))
1372 { /* repeat over a comma-separated list */
1373 QUIT; /* allow user to bail out with ^C */
1374 while (isspace ((int) *action_exp))
1378 unsigned long addr, len;
1379 struct cleanup *old_chain = NULL;
1380 struct cleanup *old_chain1 = NULL;
1381 struct agent_reqs areqs;
1383 exp = parse_exp_1 (&action_exp,
1384 block_for_pc (tloc->address), 1);
1385 old_chain = make_cleanup (free_current_contents, &exp);
1387 aexpr = gen_eval_for_expr (tloc->address, exp);
1388 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1390 ax_reqs (aexpr, &areqs);
1392 report_agent_reqs_errors (aexpr, &areqs);
1394 discard_cleanups (old_chain1);
1395 /* Even though we're not officially collecting, add
1396 to the collect list anyway. */
1397 add_aexpr (collect, aexpr);
1399 do_cleanups (old_chain);
1402 while (action_exp && *action_exp++ == ',');
1404 else if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
1406 /* We check against nested while-stepping when setting
1407 breakpoint action, so no way to run into nested
1409 gdb_assert (stepping_list);
1411 encode_actions_1 (action->body_list[0], t, tloc, frame_reg, frame_offset,
1412 stepping_list, NULL);
1415 error (_("Invalid tracepoint command '%s'"), action->line);
1419 /* Render all actions into gdb protocol. */
1421 encode_actions (struct breakpoint *t, struct bp_location *tloc,
1422 char ***tdp_actions, char ***stepping_actions)
1424 static char tdp_buff[2048], step_buff[2048];
1425 char *default_collect_line = NULL;
1426 struct command_line *actions;
1427 struct command_line *default_collect_action = NULL;
1429 LONGEST frame_offset;
1430 struct cleanup *back_to;
1432 back_to = make_cleanup (null_cleanup, NULL);
1434 clear_collection_list (&tracepoint_list);
1435 clear_collection_list (&stepping_list);
1437 *tdp_actions = NULL;
1438 *stepping_actions = NULL;
1440 gdbarch_virtual_frame_pointer (t->gdbarch,
1441 t->loc->address, &frame_reg, &frame_offset);
1443 actions = breakpoint_commands (t);
1445 /* If there are default expressions to collect, make up a collect
1446 action and prepend to the action list to encode. Note that since
1447 validation is per-tracepoint (local var "xyz" might be valid for
1448 one tracepoint and not another, etc), we make up the action on
1449 the fly, and don't cache it. */
1450 if (*default_collect)
1454 default_collect_line = xstrprintf ("collect %s", default_collect);
1455 make_cleanup (xfree, default_collect_line);
1457 line = default_collect_line;
1458 validate_actionline (&line, t);
1460 default_collect_action = xmalloc (sizeof (struct command_line));
1461 make_cleanup (xfree, default_collect_action);
1462 default_collect_action->next = actions;
1463 default_collect_action->line = line;
1464 actions = default_collect_action;
1466 encode_actions_1 (actions, t, tloc, frame_reg, frame_offset,
1467 &tracepoint_list, &stepping_list);
1469 memrange_sortmerge (&tracepoint_list);
1470 memrange_sortmerge (&stepping_list);
1472 *tdp_actions = stringify_collection_list (&tracepoint_list,
1474 *stepping_actions = stringify_collection_list (&stepping_list,
1477 do_cleanups (back_to);
1481 add_aexpr (struct collection_list *collect, struct agent_expr *aexpr)
1483 if (collect->next_aexpr_elt >= collect->aexpr_listsize)
1485 collect->aexpr_list =
1486 xrealloc (collect->aexpr_list,
1487 2 * collect->aexpr_listsize * sizeof (struct agent_expr *));
1488 collect->aexpr_listsize *= 2;
1490 collect->aexpr_list[collect->next_aexpr_elt] = aexpr;
1491 collect->next_aexpr_elt++;
1496 start_tracing (void)
1499 VEC(breakpoint_p) *tp_vec = NULL;
1501 struct breakpoint *t;
1502 struct trace_state_variable *tsv;
1503 int any_enabled = 0;
1505 tp_vec = all_tracepoints ();
1507 /* No point in tracing without any tracepoints... */
1508 if (VEC_length (breakpoint_p, tp_vec) == 0)
1510 VEC_free (breakpoint_p, tp_vec);
1511 error (_("No tracepoints defined, not starting trace"));
1514 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
1516 if (t->enable_state == bp_enabled)
1523 /* No point in tracing with only disabled tracepoints. */
1526 VEC_free (breakpoint_p, tp_vec);
1527 error (_("No tracepoints enabled, not starting trace"));
1530 target_trace_init ();
1532 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
1534 t->number_on_target = 0;
1535 target_download_tracepoint (t);
1536 t->number_on_target = t->number;
1538 VEC_free (breakpoint_p, tp_vec);
1540 /* Send down all the trace state variables too. */
1541 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
1543 target_download_trace_state_variable (tsv);
1546 /* Tell target to treat text-like sections as transparent. */
1547 target_trace_set_readonly_regions ();
1548 /* Set some mode flags. */
1549 target_set_disconnected_tracing (disconnected_tracing);
1550 target_set_circular_trace_buffer (circular_trace_buffer);
1552 /* Now insert traps and begin collecting data. */
1553 target_trace_start ();
1555 /* Reset our local state. */
1556 set_traceframe_num (-1);
1557 set_tracepoint_num (-1);
1558 set_traceframe_context (NULL);
1559 current_trace_status()->running = 1;
1564 Tell target to clear any previous trace experiment.
1565 Walk the list of tracepoints, and send them (and their actions)
1566 to the target. If no errors,
1567 Tell target to start a new trace experiment. */
1570 trace_start_command (char *args, int from_tty)
1572 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1574 if (current_trace_status ()->running)
1577 && !query (_("A trace is running already. Start a new run? ")))
1578 error (_("New trace run not started."));
1586 trace_stop_command (char *args, int from_tty)
1588 if (!current_trace_status ()->running)
1589 error (_("Trace is not running."));
1597 target_trace_stop ();
1598 /* should change in response to reply? */
1599 current_trace_status ()->running = 0;
1602 /* tstatus command */
1604 trace_status_command (char *args, int from_tty)
1606 struct trace_status *ts = current_trace_status ();
1609 status = target_get_trace_status (ts);
1614 printf_filtered (_("Using a trace file.\n"));
1617 printf_filtered (_("Trace can not be run on this target.\n"));
1622 if (!ts->running_known)
1624 printf_filtered (_("Run/stop status is unknown.\n"));
1626 else if (ts->running)
1628 printf_filtered (_("Trace is running on the target.\n"));
1632 switch (ts->stop_reason)
1634 case trace_never_run:
1635 printf_filtered (_("No trace has been run on the target.\n"));
1638 printf_filtered (_("Trace stopped by a tstop command.\n"));
1640 case trace_buffer_full:
1641 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1643 case trace_disconnected:
1644 printf_filtered (_("Trace stopped because of disconnection.\n"));
1646 case tracepoint_passcount:
1647 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1648 ts->stopping_tracepoint);
1650 case tracepoint_error:
1651 if (ts->stopping_tracepoint)
1652 printf_filtered (_("Trace stopped by an error (%s, tracepoint %d).\n"),
1653 ts->error_desc, ts->stopping_tracepoint);
1655 printf_filtered (_("Trace stopped by an error (%s).\n"),
1658 case trace_stop_reason_unknown:
1659 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1662 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1668 if (ts->traceframes_created >= 0
1669 && ts->traceframe_count != ts->traceframes_created)
1671 printf_filtered (_("Buffer contains %d trace frames (of %d created total).\n"),
1672 ts->traceframe_count, ts->traceframes_created);
1674 else if (ts->traceframe_count >= 0)
1676 printf_filtered (_("Collected %d trace frames.\n"),
1677 ts->traceframe_count);
1680 if (ts->buffer_free >= 0)
1682 if (ts->buffer_size >= 0)
1684 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1685 ts->buffer_free, ts->buffer_size);
1686 if (ts->buffer_size > 0)
1687 printf_filtered (_(" (%d%% full)"),
1688 ((int) ((((long long) (ts->buffer_size
1689 - ts->buffer_free)) * 100)
1690 / ts->buffer_size)));
1691 printf_filtered (_(".\n"));
1694 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1698 if (ts->disconnected_tracing)
1699 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1701 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1703 if (ts->circular_buffer)
1704 printf_filtered (_("Trace buffer is circular.\n"));
1706 /* Now report on what we're doing with tfind. */
1707 if (traceframe_number >= 0)
1708 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1709 traceframe_number, tracepoint_number);
1711 printf_filtered (_("Not looking at any trace frame.\n"));
1714 /* Report the trace status to uiout, in a way suitable for MI, and not
1715 suitable for CLI. If ON_STOP is true, suppress a few fields that
1716 are not meaningful in the -trace-stop response.
1718 The implementation is essentially parallel to trace_status_command, but
1719 merging them will result in unreadable code. */
1721 trace_status_mi (int on_stop)
1723 struct trace_status *ts = current_trace_status ();
1725 char *string_status;
1727 status = target_get_trace_status (ts);
1729 if (status == -1 && !ts->from_file)
1731 ui_out_field_string (uiout, "supported", "0");
1736 ui_out_field_string (uiout, "supported", "file");
1738 ui_out_field_string (uiout, "supported", "1");
1740 gdb_assert (ts->running_known);
1744 ui_out_field_string (uiout, "running", "1");
1746 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
1747 Given that the frontend gets the status either on -trace-stop, or from
1748 -trace-status after re-connection, it does not seem like this
1749 information is necessary for anything. It is not necessary for either
1750 figuring the vital state of the target nor for navigation of trace
1751 frames. If the frontend wants to show the current state is some
1752 configure dialog, it can request the value when such dialog is
1753 invoked by the user. */
1757 char *stop_reason = NULL;
1758 int stopping_tracepoint = -1;
1761 ui_out_field_string (uiout, "running", "0");
1763 if (ts->stop_reason != trace_stop_reason_unknown)
1765 switch (ts->stop_reason)
1768 stop_reason = "request";
1770 case trace_buffer_full:
1771 stop_reason = "overflow";
1773 case trace_disconnected:
1774 stop_reason = "disconnection";
1776 case tracepoint_passcount:
1777 stop_reason = "passcount";
1778 stopping_tracepoint = ts->stopping_tracepoint;
1780 case tracepoint_error:
1781 stop_reason = "error";
1782 stopping_tracepoint = ts->stopping_tracepoint;
1788 ui_out_field_string (uiout, "stop-reason", stop_reason);
1789 if (stopping_tracepoint != -1)
1790 ui_out_field_int (uiout, "stopping-tracepoint",
1791 stopping_tracepoint);
1792 if (ts->stop_reason == tracepoint_error)
1793 ui_out_field_string (uiout, "error-description",
1800 if ((int) ts->traceframe_count != -1)
1801 ui_out_field_int (uiout, "frames", ts->traceframe_count);
1802 if ((int) ts->buffer_size != -1)
1803 ui_out_field_int (uiout, "buffer-size", (int) ts->buffer_size);
1804 if ((int) ts->buffer_free != -1)
1805 ui_out_field_int (uiout, "buffer-free", (int) ts->buffer_free);
1808 /* This function handles the details of what to do about an ongoing
1809 tracing run if the user has asked to detach or otherwise disconnect
1812 disconnect_tracing (int from_tty)
1814 /* It can happen that the target that was tracing went away on its
1815 own, and we didn't notice. Get a status update, and if the
1816 current target doesn't even do tracing, then assume it's not
1818 if (target_get_trace_status (current_trace_status ()) < 0)
1819 current_trace_status ()->running = 0;
1821 /* If running interactively, give the user the option to cancel and
1822 then decide what to do differently with the run. Scripts are
1823 just going to disconnect and let the target deal with it,
1824 according to how it's been instructed previously via
1825 disconnected-tracing. */
1826 if (current_trace_status ()->running && from_tty)
1828 if (current_trace_status ()->disconnected_tracing)
1830 if (!query (_("Trace is running and will continue after detach; detach anyway? ")))
1831 error (_("Not confirmed."));
1835 if (!query (_("Trace is running but will stop on detach; detach anyway? ")))
1836 error (_("Not confirmed."));
1840 /* Also we want to be out of tfind mode, otherwise things can get
1841 confusing upon reconnection. Just use these calls instead of
1842 full tfind_1 behavior because we're in the middle of detaching,
1843 and there's no point to updating current stack frame etc. */
1844 set_traceframe_number (-1);
1845 set_traceframe_context (NULL);
1848 /* Worker function for the various flavors of the tfind command. */
1850 tfind_1 (enum trace_find_type type, int num,
1851 ULONGEST addr1, ULONGEST addr2,
1854 int target_frameno = -1, target_tracept = -1;
1855 struct frame_id old_frame_id;
1857 struct breakpoint *tp;
1859 old_frame_id = get_frame_id (get_current_frame ());
1861 target_frameno = target_trace_find (type, num, addr1, addr2,
1864 if (type == tfind_number
1866 && target_frameno == -1)
1868 /* We told the target to get out of tfind mode, and it did. */
1870 else if (target_frameno == -1)
1872 /* A request for a non-existant trace frame has failed.
1873 Our response will be different, depending on FROM_TTY:
1875 If FROM_TTY is true, meaning that this command was
1876 typed interactively by the user, then give an error
1877 and DO NOT change the state of traceframe_number etc.
1879 However if FROM_TTY is false, meaning that we're either
1880 in a script, a loop, or a user-defined command, then
1881 DON'T give an error, but DO change the state of
1882 traceframe_number etc. to invalid.
1884 The rationalle is that if you typed the command, you
1885 might just have committed a typo or something, and you'd
1886 like to NOT lose your current debugging state. However
1887 if you're in a user-defined command or especially in a
1888 loop, then you need a way to detect that the command
1889 failed WITHOUT aborting. This allows you to write
1890 scripts that search thru the trace buffer until the end,
1891 and then continue on to do something else. */
1894 error (_("Target failed to find requested trace frame."));
1898 printf_filtered ("End of trace buffer.\n");
1899 #if 0 /* dubious now? */
1900 /* The following will not recurse, since it's
1902 trace_find_command ("-1", from_tty);
1907 tp = get_tracepoint_by_number_on_target (target_tracept);
1909 reinit_frame_cache ();
1910 registers_changed ();
1911 target_dcache_invalidate ();
1912 set_traceframe_num (target_frameno);
1913 set_tracepoint_num (tp ? tp->number : target_tracept);
1914 if (target_frameno == -1)
1915 set_traceframe_context (NULL);
1917 set_traceframe_context (get_current_frame ());
1919 if (traceframe_number >= 0)
1921 /* Use different branches for MI and CLI to make CLI messages
1923 if (ui_out_is_mi_like_p (uiout))
1925 ui_out_field_string (uiout, "found", "1");
1926 ui_out_field_int (uiout, "tracepoint", tracepoint_number);
1927 ui_out_field_int (uiout, "traceframe", traceframe_number);
1931 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
1932 traceframe_number, tracepoint_number);
1937 if (ui_out_is_mi_like_p (uiout))
1938 ui_out_field_string (uiout, "found", "0");
1940 printf_unfiltered (_("No trace frame found"));
1943 /* If we're in nonstop mode and getting out of looking at trace
1944 frames, there won't be any current frame to go back to and
1947 && (has_stack_frames () || traceframe_number >= 0))
1949 enum print_what print_what;
1951 /* NOTE: in immitation of the step command, try to determine
1952 whether we have made a transition from one function to
1953 another. If so, we'll print the "stack frame" (ie. the new
1954 function and it's arguments) -- otherwise we'll just show the
1957 if (frame_id_eq (old_frame_id,
1958 get_frame_id (get_current_frame ())))
1959 print_what = SRC_LINE;
1961 print_what = SRC_AND_LOC;
1963 print_stack_frame (get_selected_frame (NULL), 1, print_what);
1968 /* trace_find_command takes a trace frame number n,
1969 sends "QTFrame:<n>" to the target,
1970 and accepts a reply that may contain several optional pieces
1971 of information: a frame number, a tracepoint number, and an
1972 indication of whether this is a trap frame or a stepping frame.
1974 The minimal response is just "OK" (which indicates that the
1975 target does not give us a frame number or a tracepoint number).
1976 Instead of that, the target may send us a string containing
1978 F<hexnum> (gives the selected frame number)
1979 T<hexnum> (gives the selected tracepoint number)
1984 trace_find_command (char *args, int from_tty)
1985 { /* this should only be called with a numeric argument */
1988 if (current_trace_status ()->running && !current_trace_status ()->from_file)
1989 error ("May not look at trace frames while trace is running.");
1991 if (args == 0 || *args == 0)
1992 { /* TFIND with no args means find NEXT trace frame. */
1993 if (traceframe_number == -1)
1994 frameno = 0; /* "next" is first one */
1996 frameno = traceframe_number + 1;
1998 else if (0 == strcmp (args, "-"))
2000 if (traceframe_number == -1)
2001 error (_("not debugging trace buffer"));
2002 else if (from_tty && traceframe_number == 0)
2003 error (_("already at start of trace buffer"));
2005 frameno = traceframe_number - 1;
2007 /* A hack to work around eval's need for fp to have been collected. */
2008 else if (0 == strcmp (args, "-1"))
2011 frameno = parse_and_eval_long (args);
2014 error (_("invalid input (%d is less than zero)"), frameno);
2016 tfind_1 (tfind_number, frameno, 0, 0, from_tty);
2021 trace_find_end_command (char *args, int from_tty)
2023 trace_find_command ("-1", from_tty);
2028 trace_find_none_command (char *args, int from_tty)
2030 trace_find_command ("-1", from_tty);
2035 trace_find_start_command (char *args, int from_tty)
2037 trace_find_command ("0", from_tty);
2040 /* tfind pc command */
2042 trace_find_pc_command (char *args, int from_tty)
2047 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2048 error ("May not look at trace frames while trace is running.");
2050 if (args == 0 || *args == 0)
2051 pc = regcache_read_pc (get_current_regcache ());
2053 pc = parse_and_eval_address (args);
2055 tfind_1 (tfind_pc, 0, pc, 0, from_tty);
2058 /* tfind tracepoint command */
2060 trace_find_tracepoint_command (char *args, int from_tty)
2063 struct breakpoint *tp;
2065 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2066 error ("May not look at trace frames while trace is running.");
2068 if (args == 0 || *args == 0)
2070 if (tracepoint_number == -1)
2071 error (_("No current tracepoint -- please supply an argument."));
2073 tdp = tracepoint_number; /* default is current TDP */
2076 tdp = parse_and_eval_long (args);
2078 /* If we have the tracepoint on hand, use the number that the
2079 target knows about (which may be different if we disconnected
2080 and reconnected). */
2081 tp = get_tracepoint (tdp);
2083 tdp = tp->number_on_target;
2085 tfind_1 (tfind_tp, tdp, 0, 0, from_tty);
2088 /* TFIND LINE command:
2090 This command will take a sourceline for argument, just like BREAK
2091 or TRACE (ie. anything that "decode_line_1" can handle).
2093 With no argument, this command will find the next trace frame
2094 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2097 trace_find_line_command (char *args, int from_tty)
2099 static CORE_ADDR start_pc, end_pc;
2100 struct symtabs_and_lines sals;
2101 struct symtab_and_line sal;
2102 struct cleanup *old_chain;
2103 char startpc_str[40], endpc_str[40];
2105 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2106 error ("May not look at trace frames while trace is running.");
2108 if (args == 0 || *args == 0)
2110 sal = find_pc_line (get_frame_pc (get_current_frame ()), 0);
2112 sals.sals = (struct symtab_and_line *)
2113 xmalloc (sizeof (struct symtab_and_line));
2118 sals = decode_line_spec (args, 1);
2122 old_chain = make_cleanup (xfree, sals.sals);
2123 if (sal.symtab == 0)
2124 error (_("No line number information available."));
2126 if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc))
2128 if (start_pc == end_pc)
2130 printf_filtered ("Line %d of \"%s\"",
2131 sal.line, sal.symtab->filename);
2133 printf_filtered (" is at address ");
2134 print_address (get_current_arch (), start_pc, gdb_stdout);
2136 printf_filtered (" but contains no code.\n");
2137 sal = find_pc_line (start_pc, 0);
2139 && find_line_pc_range (sal, &start_pc, &end_pc)
2140 && start_pc != end_pc)
2141 printf_filtered ("Attempting to find line %d instead.\n",
2144 error (_("Cannot find a good line."));
2148 /* Is there any case in which we get here, and have an address
2149 which the user would want to see? If we have debugging
2150 symbols and no line numbers? */
2151 error (_("Line number %d is out of range for \"%s\"."),
2152 sal.line, sal.symtab->filename);
2154 /* Find within range of stated line. */
2156 tfind_1 (tfind_range, 0, start_pc, end_pc - 1, from_tty);
2158 tfind_1 (tfind_outside, 0, start_pc, end_pc - 1, from_tty);
2159 do_cleanups (old_chain);
2162 /* tfind range command */
2164 trace_find_range_command (char *args, int from_tty)
2166 static CORE_ADDR start, stop;
2167 char start_str[40], stop_str[40];
2170 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2171 error ("May not look at trace frames while trace is running.");
2173 if (args == 0 || *args == 0)
2174 { /* XXX FIXME: what should default behavior be? */
2175 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2179 if (0 != (tmp = strchr (args, ',')))
2181 *tmp++ = '\0'; /* terminate start address */
2182 while (isspace ((int) *tmp))
2184 start = parse_and_eval_address (args);
2185 stop = parse_and_eval_address (tmp);
2188 { /* no explicit end address? */
2189 start = parse_and_eval_address (args);
2190 stop = start + 1; /* ??? */
2193 tfind_1 (tfind_range, 0, start, stop, from_tty);
2196 /* tfind outside command */
2198 trace_find_outside_command (char *args, int from_tty)
2200 CORE_ADDR start, stop;
2201 char start_str[40], stop_str[40];
2204 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2205 error ("May not look at trace frames while trace is running.");
2207 if (args == 0 || *args == 0)
2208 { /* XXX FIXME: what should default behavior be? */
2209 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2213 if (0 != (tmp = strchr (args, ',')))
2215 *tmp++ = '\0'; /* terminate start address */
2216 while (isspace ((int) *tmp))
2218 start = parse_and_eval_address (args);
2219 stop = parse_and_eval_address (tmp);
2222 { /* no explicit end address? */
2223 start = parse_and_eval_address (args);
2224 stop = start + 1; /* ??? */
2227 tfind_1 (tfind_outside, 0, start, stop, from_tty);
2230 /* info scope command: list the locals for a scope. */
2232 scope_info (char *args, int from_tty)
2234 struct symtabs_and_lines sals;
2236 struct minimal_symbol *msym;
2237 struct block *block;
2238 char **canonical, *symname, *save_args = args;
2239 struct dict_iterator iter;
2241 struct gdbarch *gdbarch;
2244 if (args == 0 || *args == 0)
2245 error (_("requires an argument (function, line or *addr) to define a scope"));
2247 sals = decode_line_1 (&args, 1, NULL, 0, &canonical, NULL);
2248 if (sals.nelts == 0)
2249 return; /* presumably decode_line_1 has already warned */
2251 /* Resolve line numbers to PC */
2252 resolve_sal_pc (&sals.sals[0]);
2253 block = block_for_pc (sals.sals[0].pc);
2257 QUIT; /* allow user to bail out with ^C */
2258 ALL_BLOCK_SYMBOLS (block, iter, sym)
2260 QUIT; /* allow user to bail out with ^C */
2262 printf_filtered ("Scope for %s:\n", save_args);
2265 symname = SYMBOL_PRINT_NAME (sym);
2266 if (symname == NULL || *symname == '\0')
2267 continue; /* probably botched, certainly useless */
2269 gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile);
2271 printf_filtered ("Symbol %s is ", symname);
2272 switch (SYMBOL_CLASS (sym))
2275 case LOC_UNDEF: /* messed up symbol? */
2276 printf_filtered ("a bogus symbol, class %d.\n",
2277 SYMBOL_CLASS (sym));
2278 count--; /* don't count this one */
2281 printf_filtered ("a constant with value %ld (0x%lx)",
2282 SYMBOL_VALUE (sym), SYMBOL_VALUE (sym));
2284 case LOC_CONST_BYTES:
2285 printf_filtered ("constant bytes: ");
2286 if (SYMBOL_TYPE (sym))
2287 for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++)
2288 fprintf_filtered (gdb_stdout, " %02x",
2289 (unsigned) SYMBOL_VALUE_BYTES (sym)[j]);
2292 printf_filtered ("in static storage at address ");
2293 printf_filtered ("%s", paddress (gdbarch,
2294 SYMBOL_VALUE_ADDRESS (sym)));
2297 /* GDBARCH is the architecture associated with the objfile
2298 the symbol is defined in; the target architecture may be
2299 different, and may provide additional registers. However,
2300 we do not know the target architecture at this point.
2301 We assume the objfile architecture will contain all the
2302 standard registers that occur in debug info in that
2304 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
2306 if (SYMBOL_IS_ARGUMENT (sym))
2307 printf_filtered ("an argument in register $%s",
2308 gdbarch_register_name (gdbarch, regno));
2310 printf_filtered ("a local variable in register $%s",
2311 gdbarch_register_name (gdbarch, regno));
2314 printf_filtered ("an argument at stack/frame offset %ld",
2315 SYMBOL_VALUE (sym));
2318 printf_filtered ("a local variable at frame offset %ld",
2319 SYMBOL_VALUE (sym));
2322 printf_filtered ("a reference argument at offset %ld",
2323 SYMBOL_VALUE (sym));
2325 case LOC_REGPARM_ADDR:
2326 /* Note comment at LOC_REGISTER. */
2327 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
2328 printf_filtered ("the address of an argument, in register $%s",
2329 gdbarch_register_name (gdbarch, regno));
2332 printf_filtered ("a typedef.\n");
2335 printf_filtered ("a label at address ");
2336 printf_filtered ("%s", paddress (gdbarch,
2337 SYMBOL_VALUE_ADDRESS (sym)));
2340 printf_filtered ("a function at address ");
2341 printf_filtered ("%s",
2342 paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (sym))));
2344 case LOC_UNRESOLVED:
2345 msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym),
2348 printf_filtered ("Unresolved Static");
2351 printf_filtered ("static storage at address ");
2352 printf_filtered ("%s",
2353 paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msym)));
2356 case LOC_OPTIMIZED_OUT:
2357 printf_filtered ("optimized out.\n");
2360 SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, gdb_stdout);
2363 if (SYMBOL_TYPE (sym))
2364 printf_filtered (", length %d.\n",
2365 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))));
2367 if (BLOCK_FUNCTION (block))
2370 block = BLOCK_SUPERBLOCK (block);
2373 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2377 /* worker function (cleanup) */
2379 replace_comma (void *data)
2386 /* Helper for trace_dump_command. Dump the action list starting at
2387 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2388 actions of the body of a while-stepping action. STEPPING_FRAME is
2389 set if the current traceframe was determined to be a while-stepping
2393 trace_dump_actions (struct command_line *action,
2394 int stepping_actions, int stepping_frame,
2397 char *action_exp, *next_comma;
2399 for (; action != NULL; action = action->next)
2401 struct cmd_list_element *cmd;
2403 QUIT; /* allow user to bail out with ^C */
2404 action_exp = action->line;
2405 while (isspace ((int) *action_exp))
2408 /* The collection actions to be done while stepping are
2409 bracketed by the commands "while-stepping" and "end". */
2411 if (*action_exp == '#') /* comment line */
2414 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
2416 error (_("Bad action list item: %s"), action_exp);
2418 if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
2422 for (i = 0; i < action->body_count; ++i)
2423 trace_dump_actions (action->body_list[i],
2424 1, stepping_frame, from_tty);
2426 else if (cmd_cfunc_eq (cmd, collect_pseudocommand))
2428 /* Display the collected data.
2429 For the trap frame, display only what was collected at
2430 the trap. Likewise for stepping frames, display only
2431 what was collected while stepping. This means that the
2432 two boolean variables, STEPPING_FRAME and
2433 STEPPING_ACTIONS should be equal. */
2434 if (stepping_frame == stepping_actions)
2437 { /* repeat over a comma-separated list */
2438 QUIT; /* allow user to bail out with ^C */
2439 if (*action_exp == ',')
2441 while (isspace ((int) *action_exp))
2444 next_comma = strchr (action_exp, ',');
2446 if (0 == strncasecmp (action_exp, "$reg", 4))
2447 registers_info (NULL, from_tty);
2448 else if (0 == strncasecmp (action_exp, "$loc", 4))
2449 locals_info (NULL, from_tty);
2450 else if (0 == strncasecmp (action_exp, "$arg", 4))
2451 args_info (NULL, from_tty);
2456 make_cleanup (replace_comma, next_comma);
2459 printf_filtered ("%s = ", action_exp);
2460 output_command (action_exp, from_tty);
2461 printf_filtered ("\n");
2465 action_exp = next_comma;
2467 while (action_exp && *action_exp == ',');
2473 /* The tdump command. */
2476 trace_dump_command (char *args, int from_tty)
2478 struct regcache *regcache;
2479 struct breakpoint *t;
2480 int stepping_frame = 0;
2481 struct bp_location *loc;
2483 if (tracepoint_number == -1)
2485 warning (_("No current trace frame."));
2489 t = get_tracepoint (tracepoint_number);
2492 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2495 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2496 tracepoint_number, traceframe_number);
2498 /* The current frame is a trap frame if the frame PC is equal
2499 to the tracepoint PC. If not, then the current frame was
2500 collected during single-stepping. */
2502 regcache = get_current_regcache ();
2504 /* If the traceframe's address matches any of the tracepoint's
2505 locations, assume it is a direct hit rather than a while-stepping
2506 frame. (FIXME this is not reliable, should record each frame's
2509 for (loc = t->loc; loc; loc = loc->next)
2510 if (loc->address == regcache_read_pc (regcache))
2513 trace_dump_actions (breakpoint_commands (t), 0, stepping_frame, from_tty);
2516 /* Encode a piece of a tracepoint's source-level definition in a form
2517 that is suitable for both protocol and saving in files. */
2518 /* This version does not do multiple encodes for long strings; it should
2519 return an offset to the next piece to encode. FIXME */
2522 encode_source_string (int tpnum, ULONGEST addr,
2523 char *srctype, char *src, char *buf, int buf_size)
2525 if (80 + strlen (srctype) > buf_size)
2526 error (_("Buffer too small for source encoding"));
2527 sprintf (buf, "%x:%s:%s:%x:%x:",
2528 tpnum, phex_nz (addr, sizeof (addr)), srctype, 0, (int) strlen (src));
2529 if (strlen (buf) + strlen (src) * 2 >= buf_size)
2530 error (_("Source string too long for buffer"));
2531 bin2hex (src, buf + strlen (buf), 0);
2535 extern int trace_regblock_size;
2537 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2538 non-zero, the save is performed on the target, otherwise GDB obtains all
2539 trace data and saves it locally. */
2542 trace_save (const char *filename, int target_does_save)
2544 struct cleanup *cleanup;
2546 struct trace_status *ts = current_trace_status ();
2549 struct uploaded_tp *uploaded_tps = NULL, *utp;
2550 struct uploaded_tsv *uploaded_tsvs = NULL, *utsv;
2554 ULONGEST offset = 0;
2555 #define MAX_TRACE_UPLOAD 2000
2556 gdb_byte buf[MAX_TRACE_UPLOAD];
2559 /* If the target is to save the data to a file on its own, then just
2560 send the command and be done with it. */
2561 if (target_does_save)
2563 err = target_save_trace_data (filename);
2565 error (_("Target failed to save trace data to '%s'."),
2570 /* Get the trace status first before opening the file, so if the
2571 target is losing, we can get out without touching files. */
2572 status = target_get_trace_status (ts);
2574 pathname = tilde_expand (filename);
2575 cleanup = make_cleanup (xfree, pathname);
2577 fp = fopen (pathname, "w");
2579 error (_("Unable to open file '%s' for saving trace data (%s)"),
2580 filename, safe_strerror (errno));
2581 make_cleanup_fclose (fp);
2583 /* Write a file header, with a high-bit-set char to indicate a
2584 binary file, plus a hint as what this file is, and a version
2585 number in case of future needs. */
2586 written = fwrite ("\x7fTRACE0\n", 8, 1, fp);
2588 perror_with_name (pathname);
2590 /* Write descriptive info. */
2592 /* Write out the size of a register block. */
2593 fprintf (fp, "R %x\n", trace_regblock_size);
2595 /* Write out status of the tracing run (aka "tstatus" info). */
2596 fprintf (fp, "status %c;%s",
2597 (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]);
2598 if (ts->stop_reason == tracepoint_error)
2600 char *buf = (char *) alloca (strlen (ts->error_desc) * 2 + 1);
2601 bin2hex ((gdb_byte *) ts->error_desc, buf, 0);
2602 fprintf (fp, ":%s", buf);
2604 fprintf (fp, ":%x", ts->stopping_tracepoint);
2605 if (ts->traceframe_count >= 0)
2606 fprintf (fp, ";tframes:%x", ts->traceframe_count);
2607 if (ts->traceframes_created >= 0)
2608 fprintf (fp, ";tcreated:%x", ts->traceframes_created);
2609 if (ts->buffer_free >= 0)
2610 fprintf (fp, ";tfree:%x", ts->buffer_free);
2611 if (ts->buffer_size >= 0)
2612 fprintf (fp, ";tsize:%x", ts->buffer_size);
2613 if (ts->disconnected_tracing)
2614 fprintf (fp, ";disconn:%x", ts->disconnected_tracing);
2615 if (ts->circular_buffer)
2616 fprintf (fp, ";circular:%x", ts->circular_buffer);
2619 /* Note that we want to upload tracepoints and save those, rather
2620 than simply writing out the local ones, because the user may have
2621 changed tracepoints in GDB in preparation for a future tracing
2622 run, or maybe just mass-deleted all types of breakpoints as part
2623 of cleaning up. So as not to contaminate the session, leave the
2624 data in its uploaded form, don't make into real tracepoints. */
2626 /* Get trace state variables first, they may be checked when parsing
2627 uploaded commands. */
2629 target_upload_trace_state_variables (&uploaded_tsvs);
2631 for (utsv = uploaded_tsvs; utsv; utsv = utsv->next)
2637 buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1);
2638 bin2hex ((gdb_byte *) (utsv->name), buf, 0);
2641 fprintf (fp, "tsv %x:%s:%x:%s\n",
2642 utsv->number, phex_nz (utsv->initial_value, 8),
2643 utsv->builtin, buf);
2649 free_uploaded_tsvs (&uploaded_tsvs);
2651 target_upload_tracepoints (&uploaded_tps);
2653 for (utp = uploaded_tps; utp; utp = utp->next)
2655 fprintf (fp, "tp T%x:%s:%c:%x:%x",
2656 utp->number, phex_nz (utp->addr, sizeof (utp->addr)),
2657 (utp->enabled ? 'E' : 'D'), utp->step, utp->pass);
2658 if (utp->type == bp_fast_tracepoint)
2659 fprintf (fp, ":F%x", utp->orig_size);
2661 fprintf (fp, ":X%x,%s", (unsigned int) strlen (utp->cond) / 2,
2664 for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
2665 fprintf (fp, "tp A%x:%s:%s\n",
2666 utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
2667 for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
2668 fprintf (fp, "tp S%x:%s:%s\n",
2669 utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
2672 encode_source_string (utp->number, utp->addr,
2673 "at", utp->at_string, buf, MAX_TRACE_UPLOAD);
2674 fprintf (fp, "tp Z%s\n", buf);
2676 if (utp->cond_string)
2678 encode_source_string (utp->number, utp->addr,
2679 "cond", utp->cond_string, buf, MAX_TRACE_UPLOAD);
2680 fprintf (fp, "tp Z%s\n", buf);
2682 for (a = 0; VEC_iterate (char_ptr, utp->cmd_strings, a, act); ++a)
2684 encode_source_string (utp->number, utp->addr, "cmd", act,
2685 buf, MAX_TRACE_UPLOAD);
2686 fprintf (fp, "tp Z%s\n", buf);
2690 free_uploaded_tps (&uploaded_tps);
2692 /* Mark the end of the definition section. */
2695 /* Get and write the trace data proper. We ask for big blocks, in
2696 the hopes of efficiency, but will take less if the target has
2697 packet size limitations or some such. */
2700 gotten = target_get_raw_trace_data (buf, offset, MAX_TRACE_UPLOAD);
2702 error (_("Failure to get requested trace buffer data"));
2703 /* No more data is forthcoming, we're done. */
2706 written = fwrite (buf, gotten, 1, fp);
2708 perror_with_name (pathname);
2712 /* Mark the end of trace data. (We know that gotten is 0 at this point.) */
2713 written = fwrite (&gotten, 4, 1, fp);
2715 perror_with_name (pathname);
2717 do_cleanups (cleanup);
2721 trace_save_command (char *args, int from_tty)
2723 int target_does_save = 0;
2725 char *filename = NULL;
2726 struct cleanup *back_to;
2729 error_no_arg (_("file in which to save trace data"));
2731 argv = gdb_buildargv (args);
2732 back_to = make_cleanup_freeargv (argv);
2734 for (; *argv; ++argv)
2736 if (strcmp (*argv, "-r") == 0)
2737 target_does_save = 1;
2738 else if (**argv == '-')
2739 error (_("unknown option `%s'"), *argv);
2745 error_no_arg (_("file in which to save trace data"));
2747 trace_save (filename, target_does_save);
2750 printf_filtered (_("Trace data saved to file '%s'.\n"), args);
2752 do_cleanups (back_to);
2755 /* Tell the target what to do with an ongoing tracing run if GDB
2756 disconnects for some reason. */
2759 send_disconnected_tracing_value (int value)
2761 target_set_disconnected_tracing (value);
2765 set_disconnected_tracing (char *args, int from_tty,
2766 struct cmd_list_element *c)
2768 send_disconnected_tracing_value (disconnected_tracing);
2772 set_circular_trace_buffer (char *args, int from_tty,
2773 struct cmd_list_element *c)
2775 target_set_circular_trace_buffer (circular_trace_buffer);
2778 /* Convert the memory pointed to by mem into hex, placing result in buf.
2779 * Return a pointer to the last char put in buf (null)
2780 * "stolen" from sparc-stub.c
2783 static const char hexchars[] = "0123456789abcdef";
2786 mem2hex (gdb_byte *mem, char *buf, int count)
2794 *buf++ = hexchars[ch >> 4];
2795 *buf++ = hexchars[ch & 0xf];
2804 get_traceframe_number (void)
2806 return traceframe_number;
2809 /* Make the traceframe NUM be the current trace frame. Does nothing
2810 if NUM is already current. */
2813 set_traceframe_number (int num)
2817 if (traceframe_number == num)
2819 /* Nothing to do. */
2823 newnum = target_trace_find (tfind_number, num, 0, 0, NULL);
2826 warning (_("could not change traceframe"));
2828 traceframe_number = newnum;
2830 /* Changing the traceframe changes our view of registers and of the
2832 registers_changed ();
2835 /* A cleanup used when switching away and back from tfind mode. */
2837 struct current_traceframe_cleanup
2839 /* The traceframe we were inspecting. */
2840 int traceframe_number;
2844 do_restore_current_traceframe_cleanup (void *arg)
2846 struct current_traceframe_cleanup *old = arg;
2848 set_traceframe_number (old->traceframe_number);
2852 restore_current_traceframe_cleanup_dtor (void *arg)
2854 struct current_traceframe_cleanup *old = arg;
2860 make_cleanup_restore_current_traceframe (void)
2862 struct current_traceframe_cleanup *old;
2864 old = xmalloc (sizeof (struct current_traceframe_cleanup));
2865 old->traceframe_number = traceframe_number;
2867 return make_cleanup_dtor (do_restore_current_traceframe_cleanup, old,
2868 restore_current_traceframe_cleanup_dtor);
2871 /* Given a number and address, return an uploaded tracepoint with that
2872 number, creating if necessary. */
2874 struct uploaded_tp *
2875 get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp)
2877 struct uploaded_tp *utp;
2879 for (utp = *utpp; utp; utp = utp->next)
2880 if (utp->number == num && utp->addr == addr)
2882 utp = (struct uploaded_tp *) xmalloc (sizeof (struct uploaded_tp));
2883 memset (utp, 0, sizeof (struct uploaded_tp));
2886 utp->actions = NULL;
2887 utp->step_actions = NULL;
2888 utp->cmd_strings = NULL;
2895 free_uploaded_tps (struct uploaded_tp **utpp)
2897 struct uploaded_tp *next_one;
2901 next_one = (*utpp)->next;
2907 /* Given a number and address, return an uploaded tracepoint with that
2908 number, creating if necessary. */
2910 struct uploaded_tsv *
2911 get_uploaded_tsv (int num, struct uploaded_tsv **utsvp)
2913 struct uploaded_tsv *utsv;
2915 for (utsv = *utsvp; utsv; utsv = utsv->next)
2916 if (utsv->number == num)
2918 utsv = (struct uploaded_tsv *) xmalloc (sizeof (struct uploaded_tsv));
2919 memset (utsv, 0, sizeof (struct uploaded_tsv));
2921 utsv->next = *utsvp;
2927 free_uploaded_tsvs (struct uploaded_tsv **utsvp)
2929 struct uploaded_tsv *next_one;
2933 next_one = (*utsvp)->next;
2939 /* Look for an existing tracepoint that seems similar enough to the
2940 uploaded one. Enablement isn't compared, because the user can
2941 toggle that freely, and may have done so in anticipation of the
2945 find_matching_tracepoint (struct uploaded_tp *utp)
2947 VEC(breakpoint_p) *tp_vec = all_tracepoints ();
2949 struct breakpoint *t;
2950 struct bp_location *loc;
2952 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
2954 if (t->type == utp->type
2955 && t->step_count == utp->step
2956 && t->pass_count == utp->pass
2957 /* FIXME also test conditionals and actions */
2960 /* Scan the locations for an address match. */
2961 for (loc = t->loc; loc; loc = loc->next)
2963 if (loc->address == utp->addr)
2971 /* Given a list of tracepoints uploaded from a target, attempt to
2972 match them up with existing tracepoints, and create new ones if not
2976 merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps)
2978 struct uploaded_tp *utp;
2979 struct breakpoint *t;
2981 /* Look for GDB tracepoints that match up with our uploaded versions. */
2982 for (utp = *uploaded_tps; utp; utp = utp->next)
2984 t = find_matching_tracepoint (utp);
2986 printf_filtered (_("Assuming tracepoint %d is same as target's tracepoint %d at %s.\n"),
2987 t->number, utp->number, paddress (get_current_arch (), utp->addr));
2990 t = create_tracepoint_from_upload (utp);
2992 printf_filtered (_("Created tracepoint %d for target's tracepoint %d at %s.\n"),
2993 t->number, utp->number, paddress (get_current_arch (), utp->addr));
2995 printf_filtered (_("Failed to create tracepoint for target's tracepoint %d at %s, skipping it.\n"),
2996 utp->number, paddress (get_current_arch (), utp->addr));
2998 /* Whether found or created, record the number used by the
2999 target, to help with mapping target tracepoints back to their
3000 counterparts here. */
3002 t->number_on_target = utp->number;
3005 free_uploaded_tps (uploaded_tps);
3008 /* Trace state variables don't have much to identify them beyond their
3009 name, so just use that to detect matches. */
3011 struct trace_state_variable *
3012 find_matching_tsv (struct uploaded_tsv *utsv)
3017 return find_trace_state_variable (utsv->name);
3020 struct trace_state_variable *
3021 create_tsv_from_upload (struct uploaded_tsv *utsv)
3023 const char *namebase;
3026 struct trace_state_variable *tsv;
3030 namebase = utsv->name;
3031 sprintf (buf, "%s", namebase);
3036 sprintf (buf, "%s_%d", namebase, try_num++);
3039 /* Fish for a name that is not in use. */
3040 /* (should check against all internal vars?) */
3041 while (find_trace_state_variable (buf))
3042 sprintf (buf, "%s_%d", namebase, try_num++);
3044 /* We have an available name, create the variable. */
3045 tsv = create_trace_state_variable (xstrdup (buf));
3046 tsv->initial_value = utsv->initial_value;
3047 tsv->builtin = utsv->builtin;
3052 /* Given a list of uploaded trace state variables, try to match them
3053 up with existing variables, or create additional ones. */
3056 merge_uploaded_trace_state_variables (struct uploaded_tsv **uploaded_tsvs)
3059 struct uploaded_tsv *utsv;
3060 struct trace_state_variable *tsv;
3063 /* Most likely some numbers will have to be reassigned as part of
3064 the merge, so clear them all in anticipation. */
3065 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3068 for (utsv = *uploaded_tsvs; utsv; utsv = utsv->next)
3070 tsv = find_matching_tsv (utsv);
3072 printf_filtered (_("Assuming trace state variable $%s is same as target's variable %d.\n"),
3073 tsv->name, utsv->number);
3076 tsv = create_tsv_from_upload (utsv);
3077 printf_filtered (_("Created trace state variable $%s for target's variable %d.\n"),
3078 tsv->name, utsv->number);
3080 /* Give precedence to numberings that come from the target. */
3082 tsv->number = utsv->number;
3085 /* Renumber everything that didn't get a target-assigned number. */
3087 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3088 if (tsv->number > highest)
3089 highest = tsv->number;
3092 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3093 if (tsv->number == 0)
3094 tsv->number = highest++;
3096 free_uploaded_tsvs (uploaded_tsvs);
3099 /* target tfile command */
3101 struct target_ops tfile_ops;
3103 /* Fill in tfile_ops with its defined operations and properties. */
3105 #define TRACE_HEADER_SIZE 8
3107 char *trace_filename;
3109 off_t trace_frames_offset;
3112 int trace_regblock_size;
3114 static void tfile_interp_line (char *line,
3115 struct uploaded_tp **utpp,
3116 struct uploaded_tsv **utsvp);
3119 tfile_open (char *filename, int from_tty)
3122 struct cleanup *old_chain;
3125 char header[TRACE_HEADER_SIZE];
3126 char linebuf[1000]; /* should be max remote packet size or so */
3128 int bytes, i, gotten;
3129 struct trace_status *ts;
3130 struct uploaded_tp *uploaded_tps = NULL;
3131 struct uploaded_tsv *uploaded_tsvs = NULL;
3133 target_preopen (from_tty);
3135 error (_("No trace file specified."));
3137 filename = tilde_expand (filename);
3138 if (!IS_ABSOLUTE_PATH(filename))
3140 temp = concat (current_directory, "/", filename, (char *)NULL);
3145 old_chain = make_cleanup (xfree, filename);
3147 flags = O_BINARY | O_LARGEFILE;
3149 scratch_chan = open (filename, flags, 0);
3150 if (scratch_chan < 0)
3151 perror_with_name (filename);
3153 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3155 discard_cleanups (old_chain); /* Don't free filename any more */
3156 unpush_target (&tfile_ops);
3158 push_target (&tfile_ops);
3160 trace_filename = xstrdup (filename);
3161 trace_fd = scratch_chan;
3164 /* Read the file header and test for validity. */
3165 gotten = read (trace_fd, &header, TRACE_HEADER_SIZE);
3167 perror_with_name (trace_filename);
3168 else if (gotten < TRACE_HEADER_SIZE)
3169 error (_("Premature end of file while reading trace file"));
3171 bytes += TRACE_HEADER_SIZE;
3172 if (!(header[0] == 0x7f
3173 && (strncmp (header + 1, "TRACE0\n", 7) == 0)))
3174 error (_("File is not a valid trace file."));
3176 trace_regblock_size = 0;
3177 ts = current_trace_status ();
3178 /* We know we're working with a file. */
3180 /* Set defaults in case there is no status line. */
3181 ts->running_known = 0;
3182 ts->stop_reason = trace_stop_reason_unknown;
3183 ts->traceframe_count = -1;
3184 ts->buffer_free = 0;
3185 ts->disconnected_tracing = 0;
3186 ts->circular_buffer = 0;
3188 /* Read through a section of newline-terminated lines that
3189 define things like tracepoints. */
3193 gotten = read (trace_fd, &byte, 1);
3195 perror_with_name (trace_filename);
3196 else if (gotten < 1)
3197 error (_("Premature end of file while reading trace file"));
3202 /* Empty line marks end of the definition section. */
3207 tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs);
3210 linebuf[i++] = byte;
3212 error (_("Excessively long lines in trace file"));
3215 /* Add the file's tracepoints and variables into the current mix. */
3217 /* Get trace state variables first, they may be checked when parsing
3218 uploaded commands. */
3219 merge_uploaded_trace_state_variables (&uploaded_tsvs);
3221 merge_uploaded_tracepoints (&uploaded_tps);
3223 /* Record the starting offset of the binary trace data. */
3224 trace_frames_offset = bytes;
3226 /* If we don't have a blocksize, we can't interpret the
3228 if (trace_regblock_size == 0)
3229 error (_("No register block size recorded in trace file"));
3230 if (ts->traceframe_count <= 0)
3232 warning ("No traceframes present in this file.");
3236 #define TFILE_PID (1)
3237 inferior_appeared (current_inferior (), TFILE_PID);
3238 inferior_ptid = pid_to_ptid (TFILE_PID);
3239 add_thread_silent (inferior_ptid);
3241 post_create_inferior (&tfile_ops, from_tty);
3244 /* FIXME this will get defined in MI patch submission */
3245 tfind_1 (tfind_number, 0, 0, 0, 0);
3249 /* Interpret the given line from the definitions part of the trace
3253 tfile_interp_line (char *line,
3254 struct uploaded_tp **utpp, struct uploaded_tsv **utsvp)
3258 if (strncmp (p, "R ", strlen ("R ")) == 0)
3261 trace_regblock_size = strtol (p, &p, 16);
3263 else if (strncmp (p, "status ", strlen ("status ")) == 0)
3265 p += strlen ("status ");
3266 parse_trace_status (p, current_trace_status ());
3268 else if (strncmp (p, "tp ", strlen ("tp ")) == 0)
3270 p += strlen ("tp ");
3271 parse_tracepoint_definition (p, utpp);
3273 else if (strncmp (p, "tsv ", strlen ("tsv ")) == 0)
3275 p += strlen ("tsv ");
3276 parse_tsv_definition (p, utsvp);
3279 warning ("Ignoring trace file definition \"%s\"", line);
3282 /* Parse the part of trace status syntax that is shared between
3283 the remote protocol and the trace file reader. */
3285 extern char *unpack_varlen_hex (char *buff, ULONGEST *result);
3288 parse_trace_status (char *line, struct trace_status *ts)
3290 char *p = line, *p1, *p2, *p_temp;
3293 ts->running_known = 1;
3294 ts->running = (*p++ == '1');
3295 ts->stop_reason = trace_stop_reason_unknown;
3296 xfree (ts->error_desc);
3297 ts->error_desc = NULL;
3298 ts->traceframe_count = -1;
3299 ts->traceframes_created = -1;
3300 ts->buffer_free = -1;
3301 ts->buffer_size = -1;
3302 ts->disconnected_tracing = 0;
3303 ts->circular_buffer = 0;
3307 p1 = strchr (p, ':');
3309 error (_("Malformed trace status, at %s\n\
3310 Status line: '%s'\n"), p, line);
3311 if (strncmp (p, stop_reason_names[trace_buffer_full], p1 - p) == 0)
3313 p = unpack_varlen_hex (++p1, &val);
3314 ts->stop_reason = trace_buffer_full;
3316 else if (strncmp (p, stop_reason_names[trace_never_run], p1 - p) == 0)
3318 p = unpack_varlen_hex (++p1, &val);
3319 ts->stop_reason = trace_never_run;
3321 else if (strncmp (p, stop_reason_names[tracepoint_passcount], p1 - p) == 0)
3323 p = unpack_varlen_hex (++p1, &val);
3324 ts->stop_reason = tracepoint_passcount;
3325 ts->stopping_tracepoint = val;
3327 else if (strncmp (p, stop_reason_names[tstop_command], p1 - p) == 0)
3329 p = unpack_varlen_hex (++p1, &val);
3330 ts->stop_reason = tstop_command;
3332 else if (strncmp (p, stop_reason_names[trace_disconnected], p1 - p) == 0)
3334 p = unpack_varlen_hex (++p1, &val);
3335 ts->stop_reason = trace_disconnected;
3337 else if (strncmp (p, stop_reason_names[tracepoint_error], p1 - p) == 0)
3339 p2 = strchr (++p1, ':');
3344 ts->error_desc = xmalloc ((p2 - p1) / 2 + 1);
3345 end = hex2bin (p1, ts->error_desc, (p2 - p1) / 2);
3346 ts->error_desc[end] = '\0';
3349 ts->error_desc = xstrdup ("");
3351 p = unpack_varlen_hex (++p2, &val);
3352 ts->stopping_tracepoint = val;
3353 ts->stop_reason = tracepoint_error;
3355 else if (strncmp (p, "tframes", p1 - p) == 0)
3357 p = unpack_varlen_hex (++p1, &val);
3358 ts->traceframe_count = val;
3360 else if (strncmp (p, "tcreated", p1 - p) == 0)
3362 p = unpack_varlen_hex (++p1, &val);
3363 ts->traceframes_created = val;
3365 else if (strncmp (p, "tfree", p1 - p) == 0)
3367 p = unpack_varlen_hex (++p1, &val);
3368 ts->buffer_free = val;
3370 else if (strncmp (p, "tsize", p1 - p) == 0)
3372 p = unpack_varlen_hex (++p1, &val);
3373 ts->buffer_size = val;
3375 else if (strncmp (p, "disconn", p1 - p) == 0)
3377 p = unpack_varlen_hex (++p1, &val);
3378 ts->disconnected_tracing = val;
3380 else if (strncmp (p, "circular", p1 - p) == 0)
3382 p = unpack_varlen_hex (++p1, &val);
3383 ts->circular_buffer = val;
3387 /* Silently skip unknown optional info. */
3388 p_temp = strchr (p1 + 1, ';');
3392 /* Must be at the end. */
3398 /* Given a line of text defining a part of a tracepoint, parse it into
3399 an "uploaded tracepoint". */
3402 parse_tracepoint_definition (char *line, struct uploaded_tp **utpp)
3406 ULONGEST num, addr, step, pass, orig_size, xlen, start;
3407 int enabled, i, end;
3409 char *cond, *srctype, *src, *buf;
3410 struct uploaded_tp *utp = NULL;
3413 /* Both tracepoint and action definitions start with the same number
3414 and address sequence. */
3416 p = unpack_varlen_hex (p, &num);
3417 p++; /* skip a colon */
3418 p = unpack_varlen_hex (p, &addr);
3419 p++; /* skip a colon */
3422 enabled = (*p++ == 'E');
3423 p++; /* skip a colon */
3424 p = unpack_varlen_hex (p, &step);
3425 p++; /* skip a colon */
3426 p = unpack_varlen_hex (p, &pass);
3427 type = bp_tracepoint;
3429 /* Thumb through optional fields. */
3432 p++; /* skip a colon */
3435 type = bp_fast_tracepoint;
3437 p = unpack_varlen_hex (p, &orig_size);
3442 p = unpack_varlen_hex (p, &xlen);
3443 p++; /* skip a comma */
3444 cond = (char *) xmalloc (2 * xlen + 1);
3445 strncpy (cond, p, 2 * xlen);
3446 cond[2 * xlen] = '\0';
3450 warning (_("Unrecognized char '%c' in tracepoint definition, skipping rest"), *p);
3452 utp = get_uploaded_tp (num, addr, utpp);
3454 utp->enabled = enabled;
3459 else if (piece == 'A')
3461 utp = get_uploaded_tp (num, addr, utpp);
3462 VEC_safe_push (char_ptr, utp->actions, xstrdup (p));
3464 else if (piece == 'S')
3466 utp = get_uploaded_tp (num, addr, utpp);
3467 VEC_safe_push (char_ptr, utp->step_actions, xstrdup (p));
3469 else if (piece == 'Z')
3471 /* Parse a chunk of source form definition. */
3472 utp = get_uploaded_tp (num, addr, utpp);
3474 p = strchr (p, ':');
3475 p++; /* skip a colon */
3476 p = unpack_varlen_hex (p, &start);
3477 p++; /* skip a colon */
3478 p = unpack_varlen_hex (p, &xlen);
3479 p++; /* skip a colon */
3481 buf = alloca (strlen (line));
3483 end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
3486 if (strncmp (srctype, "at:", strlen ("at:")) == 0)
3487 utp->at_string = xstrdup (buf);
3488 else if (strncmp (srctype, "cond:", strlen ("cond:")) == 0)
3489 utp->cond_string = xstrdup (buf);
3490 else if (strncmp (srctype, "cmd:", strlen ("cmd:")) == 0)
3491 VEC_safe_push (char_ptr, utp->cmd_strings, xstrdup (buf));
3495 /* Don't error out, the target might be sending us optional
3496 info that we don't care about. */
3497 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece);
3501 /* Convert a textual description of a trace state variable into an
3505 parse_tsv_definition (char *line, struct uploaded_tsv **utsvp)
3508 ULONGEST num, initval, builtin;
3510 struct uploaded_tsv *utsv = NULL;
3512 buf = alloca (strlen (line));
3515 p = unpack_varlen_hex (p, &num);
3516 p++; /* skip a colon */
3517 p = unpack_varlen_hex (p, &initval);
3518 p++; /* skip a colon */
3519 p = unpack_varlen_hex (p, &builtin);
3520 p++; /* skip a colon */
3521 end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
3524 utsv = get_uploaded_tsv (num, utsvp);
3525 utsv->initial_value = initval;
3526 utsv->builtin = builtin;
3527 utsv->name = xstrdup (buf);
3530 /* Close the trace file and generally clean up. */
3533 tfile_close (int quitting)
3540 pid = ptid_get_pid (inferior_ptid);
3541 inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
3542 exit_inferior_silent (pid);
3547 xfree (trace_filename);
3551 tfile_files_info (struct target_ops *t)
3553 /* (it would be useful to mention the name of the file) */
3554 printf_filtered ("Looking at a trace file.\n");
3557 /* The trace status for a file is that tracing can never be run. */
3560 tfile_get_trace_status (struct trace_status *ts)
3562 /* Other bits of trace status were collected as part of opening the
3563 trace files, so nothing to do here. */
3568 /* Given the position of a traceframe in the file, figure out what
3569 address the frame was collected at. This would normally be the
3570 value of a collected PC register, but if not available, we
3574 tfile_get_traceframe_address (off_t tframe_offset)
3578 struct breakpoint *tp;
3579 off_t saved_offset = cur_offset;
3582 /* FIXME dig pc out of collected registers */
3584 /* Fall back to using tracepoint address. */
3585 lseek (trace_fd, tframe_offset, SEEK_SET);
3586 gotten = read (trace_fd, &tpnum, 2);
3588 perror_with_name (trace_filename);
3589 else if (gotten < 2)
3590 error (_("Premature end of file while reading trace file"));
3592 tp = get_tracepoint_by_number_on_target (tpnum);
3593 /* FIXME this is a poor heuristic if multiple locations */
3595 addr = tp->loc->address;
3597 /* Restore our seek position. */
3598 cur_offset = saved_offset;
3599 lseek (trace_fd, cur_offset, SEEK_SET);
3603 /* Given a type of search and some parameters, scan the collection of
3604 traceframes in the file looking for a match. When found, return
3605 both the traceframe and tracepoint number, otherwise -1 for
3609 tfile_trace_find (enum trace_find_type type, int num,
3610 ULONGEST addr1, ULONGEST addr2, int *tpp)
3613 int tfnum = 0, found = 0, gotten;
3615 struct breakpoint *tp;
3616 off_t offset, tframe_offset;
3619 lseek (trace_fd, trace_frames_offset, SEEK_SET);
3620 offset = trace_frames_offset;
3623 tframe_offset = offset;
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"));
3632 gotten = read (trace_fd, &data_size, 4);
3634 perror_with_name (trace_filename);
3635 else if (gotten < 4)
3636 error (_("Premature end of file while reading trace file"));
3645 tfaddr = tfile_get_traceframe_address (tframe_offset);
3646 if (tfaddr == addr1)
3650 tp = get_tracepoint (num);
3651 if (tp && tpnum == tp->number_on_target)
3655 tfaddr = tfile_get_traceframe_address (tframe_offset);
3656 if (addr1 <= tfaddr && tfaddr <= addr2)
3660 tfaddr = tfile_get_traceframe_address (tframe_offset);
3661 if (!(addr1 <= tfaddr && tfaddr <= addr2))
3665 internal_error (__FILE__, __LINE__, _("unknown tfind type"));
3671 cur_offset = offset;
3672 cur_data_size = data_size;
3675 /* Skip past the traceframe's data. */
3676 lseek (trace_fd, data_size, SEEK_CUR);
3677 offset += data_size;
3678 /* Update our own count of traceframes. */
3681 /* Did not find what we were looking for. */
3687 /* Look for a block of saved registers in the traceframe, and get the
3688 requested register from it. */
3691 tfile_fetch_registers (struct target_ops *ops,
3692 struct regcache *regcache, int regno)
3694 struct gdbarch *gdbarch = get_regcache_arch (regcache);
3696 int i, pos, offset, regn, regsize, gotten, pc_regno;
3697 unsigned short mlen;
3700 /* An uninitialized reg size says we're not going to be
3701 successful at getting register blocks. */
3702 if (!trace_regblock_size)
3705 regs = alloca (trace_regblock_size);
3707 lseek (trace_fd, cur_offset, SEEK_SET);
3709 while (pos < cur_data_size)
3711 gotten = read (trace_fd, &block_type, 1);
3713 perror_with_name (trace_filename);
3714 else if (gotten < 1)
3715 error (_("Premature end of file while reading trace file"));
3721 gotten = read (trace_fd, regs, trace_regblock_size);
3723 perror_with_name (trace_filename);
3724 else if (gotten < trace_regblock_size)
3725 error (_("Premature end of file while reading trace file"));
3727 /* Assume the block is laid out in GDB register number order,
3728 each register with the size that it has in GDB. */
3730 for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
3732 regsize = register_size (gdbarch, regn);
3733 /* Make sure we stay within block bounds. */
3734 if (offset + regsize >= trace_regblock_size)
3736 if (!regcache_valid_p (regcache, regn))
3740 regcache_raw_supply (regcache, regno, regs + offset);
3743 else if (regno == -1)
3745 regcache_raw_supply (regcache, regn, regs + offset);
3752 lseek (trace_fd, 8, SEEK_CUR);
3753 gotten = read (trace_fd, &mlen, 2);
3755 perror_with_name (trace_filename);
3756 else if (gotten < 2)
3757 error (_("Premature end of file while reading trace file"));
3758 lseek (trace_fd, mlen, SEEK_CUR);
3759 pos += (8 + 2 + mlen);
3762 lseek (trace_fd, 4 + 8, SEEK_CUR);
3766 error ("Unknown block type '%c' (0x%x) in trace frame",
3767 block_type, block_type);
3772 /* We get here if no register data has been found. Although we
3773 don't like making up numbers, GDB has all manner of troubles when
3774 the target says some register is not available. Filling in with
3775 zeroes is a reasonable fallback. */
3776 for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
3777 regcache_raw_supply (regcache, regn, NULL);
3779 /* We can often usefully guess that the PC is going to be the same
3780 as the address of the tracepoint. */
3781 pc_regno = gdbarch_pc_regnum (gdbarch);
3782 if (pc_regno >= 0 && (regno == -1 || regno == pc_regno))
3784 struct breakpoint *tp = get_tracepoint (tracepoint_number);
3788 /* But don't try to guess if tracepoint is multi-location... */
3791 warning ("Tracepoint %d has multiple locations, cannot infer $pc",
3795 /* ... or does while-stepping. */
3796 if (tp->step_count > 0)
3798 warning ("Tracepoint %d does while-stepping, cannot infer $pc",
3803 store_unsigned_integer (regs, register_size (gdbarch, pc_regno),
3804 gdbarch_byte_order (gdbarch),
3806 regcache_raw_supply (regcache, pc_regno, regs);
3812 tfile_xfer_partial (struct target_ops *ops, enum target_object object,
3813 const char *annex, gdb_byte *readbuf,
3814 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
3818 ULONGEST maddr, amt;
3819 unsigned short mlen;
3821 /* We're only doing regular memory for now. */
3822 if (object != TARGET_OBJECT_MEMORY)
3825 if (readbuf == NULL)
3826 error ("tfile_xfer_partial: trace file is read-only");
3828 lseek (trace_fd, cur_offset, SEEK_SET);
3830 while (pos < cur_data_size)
3832 gotten = read (trace_fd, &block_type, 1);
3834 perror_with_name (trace_filename);
3835 else if (gotten < 1)
3836 error (_("Premature end of file while reading trace file"));
3841 lseek (trace_fd, trace_regblock_size, SEEK_CUR);
3842 pos += trace_regblock_size;
3845 gotten = read (trace_fd, &maddr, 8);
3847 perror_with_name (trace_filename);
3848 else if (gotten < 8)
3849 error (_("Premature end of file while reading trace file"));
3851 gotten = read (trace_fd, &mlen, 2);
3853 perror_with_name (trace_filename);
3854 else if (gotten < 2)
3855 error (_("Premature end of file while reading trace file"));
3856 /* If the block includes the first part of the desired
3857 range, return as much it has; GDB will re-request the
3858 remainder, which might be in a different block of this
3860 if (maddr <= offset && offset < (maddr + mlen))
3862 amt = (maddr + mlen) - offset;
3866 read (trace_fd, readbuf, amt);
3869 lseek (trace_fd, mlen, SEEK_CUR);
3870 pos += (8 + 2 + mlen);
3873 lseek (trace_fd, 4 + 8, SEEK_CUR);
3877 error ("Unknown block type '%c' (0x%x) in traceframe",
3878 block_type, block_type);
3883 /* It's unduly pedantic to refuse to look at the executable for
3884 read-only pieces; so do the equivalent of readonly regions aka
3886 /* FIXME account for relocation at some point */
3893 for (s = exec_bfd->sections; s; s = s->next)
3895 if ((s->flags & SEC_LOAD) == 0 ||
3896 (s->flags & SEC_READONLY) == 0)
3900 size = bfd_get_section_size (s);
3901 if (lma <= offset && offset < (lma + size))
3903 amt = (lma + size) - offset;
3907 amt = bfd_get_section_contents (exec_bfd, s,
3908 readbuf, offset - lma, amt);
3914 /* Indicate failure to find the requested memory block. */
3918 /* Iterate through the blocks of a trace frame, looking for a 'V'
3919 block with a matching tsv number. */
3922 tfile_get_trace_state_variable_value (int tsvnum, LONGEST *val)
3925 int pos, vnum, gotten;
3926 unsigned short mlen;
3928 lseek (trace_fd, cur_offset, SEEK_SET);
3930 while (pos < cur_data_size)
3932 gotten = read (trace_fd, &block_type, 1);
3934 perror_with_name (trace_filename);
3935 else if (gotten < 1)
3936 error (_("Premature end of file while reading trace file"));
3941 lseek (trace_fd, trace_regblock_size, SEEK_CUR);
3942 pos += trace_regblock_size;
3945 lseek (trace_fd, 8, SEEK_CUR);
3946 gotten = read (trace_fd, &mlen, 2);
3948 perror_with_name (trace_filename);
3949 else if (gotten < 2)
3950 error (_("Premature end of file while reading trace file"));
3951 lseek (trace_fd, mlen, SEEK_CUR);
3952 pos += (8 + 2 + mlen);
3955 gotten = read (trace_fd, &vnum, 4);
3957 perror_with_name (trace_filename);
3958 else if (gotten < 4)
3959 error (_("Premature end of file while reading trace file"));
3962 gotten = read (trace_fd, val, 8);
3964 perror_with_name (trace_filename);
3965 else if (gotten < 8)
3966 error (_("Premature end of file while reading trace file"));
3969 lseek (trace_fd, 8, SEEK_CUR);
3973 error ("Unknown block type '%c' (0x%x) in traceframe",
3974 block_type, block_type);
3978 /* Didn't find anything. */
3983 tfile_has_all_memory (struct target_ops *ops)
3989 tfile_has_memory (struct target_ops *ops)
3995 tfile_has_stack (struct target_ops *ops)
4001 tfile_has_registers (struct target_ops *ops)
4007 init_tfile_ops (void)
4009 tfile_ops.to_shortname = "tfile";
4010 tfile_ops.to_longname = "Local trace dump file";
4012 "Use a trace file as a target. Specify the filename of the trace file.";
4013 tfile_ops.to_open = tfile_open;
4014 tfile_ops.to_close = tfile_close;
4015 tfile_ops.to_fetch_registers = tfile_fetch_registers;
4016 tfile_ops.to_xfer_partial = tfile_xfer_partial;
4017 tfile_ops.to_files_info = tfile_files_info;
4018 tfile_ops.to_get_trace_status = tfile_get_trace_status;
4019 tfile_ops.to_trace_find = tfile_trace_find;
4020 tfile_ops.to_get_trace_state_variable_value = tfile_get_trace_state_variable_value;
4021 /* core_stratum might seem more logical, but GDB doesn't like having
4022 more than one core_stratum vector. */
4023 tfile_ops.to_stratum = process_stratum;
4024 tfile_ops.to_has_all_memory = tfile_has_all_memory;
4025 tfile_ops.to_has_memory = tfile_has_memory;
4026 tfile_ops.to_has_stack = tfile_has_stack;
4027 tfile_ops.to_has_registers = tfile_has_registers;
4028 tfile_ops.to_magic = OPS_MAGIC;
4031 /* module initialization */
4033 _initialize_tracepoint (void)
4035 struct cmd_list_element *c;
4037 traceframe_number = -1;
4038 tracepoint_number = -1;
4040 if (tracepoint_list.list == NULL)
4042 tracepoint_list.listsize = 128;
4043 tracepoint_list.list = xmalloc
4044 (tracepoint_list.listsize * sizeof (struct memrange));
4046 if (tracepoint_list.aexpr_list == NULL)
4048 tracepoint_list.aexpr_listsize = 128;
4049 tracepoint_list.aexpr_list = xmalloc
4050 (tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *));
4053 if (stepping_list.list == NULL)
4055 stepping_list.listsize = 128;
4056 stepping_list.list = xmalloc
4057 (stepping_list.listsize * sizeof (struct memrange));
4060 if (stepping_list.aexpr_list == NULL)
4062 stepping_list.aexpr_listsize = 128;
4063 stepping_list.aexpr_list = xmalloc
4064 (stepping_list.aexpr_listsize * sizeof (struct agent_expr *));
4067 add_info ("scope", scope_info,
4068 _("List the variables local to a scope"));
4070 add_cmd ("tracepoints", class_trace, NULL,
4071 _("Tracing of program execution without stopping the program."),
4074 add_com ("tdump", class_trace, trace_dump_command,
4075 _("Print everything collected at the current tracepoint."));
4077 add_com ("tsave", class_trace, trace_save_command, _("\
4078 Save the trace data to a file.\n\
4079 Use the '-r' option to direct the target to save directly to the file,\n\
4080 using its own filesystem."));
4082 c = add_com ("tvariable", class_trace, trace_variable_command,_("\
4083 Define a trace state variable.\n\
4084 Argument is a $-prefixed name, optionally followed\n\
4085 by '=' and an expression that sets the initial value\n\
4086 at the start of tracing."));
4087 set_cmd_completer (c, expression_completer);
4089 add_cmd ("tvariable", class_trace, delete_trace_variable_command, _("\
4090 Delete one or more trace state variables.\n\
4091 Arguments are the names of the variables to delete.\n\
4092 If no arguments are supplied, delete all variables."), &deletelist);
4093 /* FIXME add a trace variable completer */
4095 add_info ("tvariables", tvariables_info, _("\
4096 Status of trace state variables and their values.\n\
4099 add_prefix_cmd ("tfind", class_trace, trace_find_command, _("\
4100 Select a trace frame;\n\
4101 No argument means forward by one frame; '-' means backward by one frame."),
4102 &tfindlist, "tfind ", 1, &cmdlist);
4104 add_cmd ("outside", class_trace, trace_find_outside_command, _("\
4105 Select a trace frame whose PC is outside the given range (exclusive).\n\
4106 Usage: tfind outside addr1, addr2"),
4109 add_cmd ("range", class_trace, trace_find_range_command, _("\
4110 Select a trace frame whose PC is in the given range (inclusive).\n\
4111 Usage: tfind range addr1,addr2"),
4114 add_cmd ("line", class_trace, trace_find_line_command, _("\
4115 Select a trace frame by source line.\n\
4116 Argument can be a line number (with optional source file), \n\
4117 a function name, or '*' followed by an address.\n\
4118 Default argument is 'the next source line that was traced'."),
4121 add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, _("\
4122 Select a trace frame by tracepoint number.\n\
4123 Default is the tracepoint for the current trace frame."),
4126 add_cmd ("pc", class_trace, trace_find_pc_command, _("\
4127 Select a trace frame by PC.\n\
4128 Default is the current PC, or the PC of the current trace frame."),
4131 add_cmd ("end", class_trace, trace_find_end_command, _("\
4132 Synonym for 'none'.\n\
4133 De-select any trace frame and resume 'live' debugging."),
4136 add_cmd ("none", class_trace, trace_find_none_command,
4137 _("De-select any trace frame and resume 'live' debugging."),
4140 add_cmd ("start", class_trace, trace_find_start_command,
4141 _("Select the first trace frame in the trace buffer."),
4144 add_com ("tstatus", class_trace, trace_status_command,
4145 _("Display the status of the current trace data collection."));
4147 add_com ("tstop", class_trace, trace_stop_command,
4148 _("Stop trace data collection."));
4150 add_com ("tstart", class_trace, trace_start_command,
4151 _("Start trace data collection."));
4153 add_com ("end", class_trace, end_actions_pseudocommand, _("\
4154 Ends a list of commands or actions.\n\
4155 Several GDB commands allow you to enter a list of commands or actions.\n\
4156 Entering \"end\" on a line by itself is the normal way to terminate\n\
4158 Note: the \"end\" command cannot be used at the gdb prompt."));
4160 add_com ("while-stepping", class_trace, while_stepping_pseudocommand, _("\
4161 Specify single-stepping behavior at a tracepoint.\n\
4162 Argument is number of instructions to trace in single-step mode\n\
4163 following the tracepoint. This command is normally followed by\n\
4164 one or more \"collect\" commands, to specify what to collect\n\
4165 while single-stepping.\n\n\
4166 Note: this command can only be used in a tracepoint \"actions\" list."));
4168 add_com_alias ("ws", "while-stepping", class_alias, 0);
4169 add_com_alias ("stepping", "while-stepping", class_alias, 0);
4171 add_com ("collect", class_trace, collect_pseudocommand, _("\
4172 Specify one or more data items to be collected at a tracepoint.\n\
4173 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
4174 collect all data (variables, registers) referenced by that expression.\n\
4175 Also accepts the following special arguments:\n\
4176 $regs -- all registers.\n\
4177 $args -- all function arguments.\n\
4178 $locals -- all variables local to the block/function scope.\n\
4179 Note: this command can only be used in a tracepoint \"actions\" list."));
4181 add_com ("teval", class_trace, teval_pseudocommand, _("\
4182 Specify one or more expressions to be evaluated at a tracepoint.\n\
4183 Accepts a comma-separated list of (one or more) expressions.\n\
4184 The result of each evaluation will be discarded.\n\
4185 Note: this command can only be used in a tracepoint \"actions\" list."));
4187 add_com ("actions", class_trace, trace_actions_command, _("\
4188 Specify the actions to be taken at a tracepoint.\n\
4189 Tracepoint actions may include collecting of specified data, \n\
4190 single-stepping, or enabling/disabling other tracepoints, \n\
4191 depending on target's capabilities."));
4193 default_collect = xstrdup ("");
4194 add_setshow_string_cmd ("default-collect", class_trace,
4195 &default_collect, _("\
4196 Set the list of expressions to collect by default"), _("\
4197 Show the list of expressions to collect by default"), NULL,
4199 &setlist, &showlist);
4201 add_setshow_boolean_cmd ("disconnected-tracing", no_class,
4202 &disconnected_tracing, _("\
4203 Set whether tracing continues after GDB disconnects."), _("\
4204 Show whether tracing continues after GDB disconnects."), _("\
4205 Use this to continue a tracing run even if GDB disconnects\n\
4206 or detaches from the target. You can reconnect later and look at\n\
4207 trace data collected in the meantime."),
4208 set_disconnected_tracing,
4213 add_setshow_boolean_cmd ("circular-trace-buffer", no_class,
4214 &circular_trace_buffer, _("\
4215 Set target's use of circular trace buffer."), _("\
4216 Show target's use of circular trace buffer."), _("\
4217 Use this to make the trace buffer into a circular buffer,\n\
4218 which will discard traceframes (oldest first) instead of filling\n\
4219 up and stopping the trace run."),
4220 set_circular_trace_buffer,
4227 add_target (&tfile_ops);