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, 2011 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"
54 #include "exceptions.h"
55 #include "cli/cli-utils.h"
57 /* readline include files */
58 #include "readline/readline.h"
59 #include "readline/history.h"
61 /* readline defines this. */
72 extern int hex2bin (const char *hex, gdb_byte *bin, int count);
73 extern int bin2hex (const gdb_byte *bin, char *hex, int count);
75 /* Maximum length of an agent aexpression.
76 This accounts for the fact that packets are limited to 400 bytes
77 (which includes everything -- including the checksum), and assumes
78 the worst case of maximum length for each of the pieces of a
81 NOTE: expressions get mem2hex'ed otherwise this would be twice as
82 large. (400 - 31)/2 == 184 */
83 #define MAX_AGENT_EXPR_LEN 184
87 /* A hook used to notify the UI of tracepoint operations. */
89 void (*deprecated_trace_find_hook) (char *arg, int from_tty);
90 void (*deprecated_trace_start_stop_hook) (int start, int from_tty);
92 extern void (*deprecated_readline_begin_hook) (char *, ...);
93 extern char *(*deprecated_readline_hook) (char *);
94 extern void (*deprecated_readline_end_hook) (void);
96 /* GDB commands implemented in other modules:
99 extern void output_command (char *, int);
104 This module defines the following debugger commands:
105 trace : set a tracepoint on a function, line, or address.
106 info trace : list all debugger-defined tracepoints.
107 delete trace : delete one or more tracepoints.
108 enable trace : enable one or more tracepoints.
109 disable trace : disable one or more tracepoints.
110 actions : specify actions to be taken at a tracepoint.
111 passcount : specify a pass count for a tracepoint.
112 tstart : start a trace experiment.
113 tstop : stop a trace experiment.
114 tstatus : query the status of a trace experiment.
115 tfind : find a trace frame in the trace buffer.
116 tdump : print everything collected at the current tracepoint.
117 save-tracepoints : write tracepoint setup into a file.
119 This module defines the following user-visible debugger variables:
120 $trace_frame : sequence number of trace frame currently being debugged.
121 $trace_line : source line of trace frame currently being debugged.
122 $trace_file : source file of trace frame currently being debugged.
123 $tracepoint : tracepoint number of trace frame currently being debugged.
127 /* ======= Important global variables: ======= */
129 /* The list of all trace state variables. We don't retain pointers to
130 any of these for any reason - API is by name or number only - so it
131 works to have a vector of objects. */
133 typedef struct trace_state_variable tsv_s;
136 /* An object describing the contents of a traceframe. */
138 struct traceframe_info
140 /* Collected memory. */
141 VEC(mem_range_s) *memory;
144 static VEC(tsv_s) *tvariables;
146 /* The next integer to assign to a variable. */
148 static int next_tsv_number = 1;
150 /* Number of last traceframe collected. */
151 static int traceframe_number;
153 /* Tracepoint for last traceframe collected. */
154 static int tracepoint_number;
156 /* Symbol for function for last traceframe collected. */
157 static struct symbol *traceframe_fun;
159 /* Symtab and line for last traceframe collected. */
160 static struct symtab_and_line traceframe_sal;
162 /* The traceframe info of the current traceframe. NULL if we haven't
163 yet attempted to fetch it, or if the target does not support
164 fetching this object, or if we're not inspecting a traceframe
166 static struct traceframe_info *traceframe_info;
168 /* Tracing command lists. */
169 static struct cmd_list_element *tfindlist;
171 /* List of expressions to collect by default at each tracepoint hit. */
172 char *default_collect = "";
174 static int disconnected_tracing;
176 /* This variable controls whether we ask the target for a linear or
177 circular trace buffer. */
179 static int circular_trace_buffer;
181 /* Textual notes applying to the current and/or future trace runs. */
183 char *trace_user = NULL;
185 /* Textual notes applying to the current and/or future trace runs. */
187 char *trace_notes = NULL;
189 /* Textual notes applying to the stopping of a trace. */
191 char *trace_stop_notes = NULL;
193 /* ======= Important command functions: ======= */
194 static void trace_actions_command (char *, int);
195 static void trace_start_command (char *, int);
196 static void trace_stop_command (char *, int);
197 static void trace_status_command (char *, int);
198 static void trace_find_command (char *, int);
199 static void trace_find_pc_command (char *, int);
200 static void trace_find_tracepoint_command (char *, int);
201 static void trace_find_line_command (char *, int);
202 static void trace_find_range_command (char *, int);
203 static void trace_find_outside_command (char *, int);
204 static void trace_dump_command (char *, int);
206 /* support routines */
208 struct collection_list;
209 static void add_aexpr (struct collection_list *, struct agent_expr *);
210 static char *mem2hex (gdb_byte *, char *, int);
211 static void add_register (struct collection_list *collection,
214 static void free_uploaded_tps (struct uploaded_tp **utpp);
215 static void free_uploaded_tsvs (struct uploaded_tsv **utsvp);
218 extern void _initialize_tracepoint (void);
220 static struct trace_status trace_status;
222 char *stop_reason_names[] = {
232 struct trace_status *
233 current_trace_status (void)
235 return &trace_status;
241 free_traceframe_info (struct traceframe_info *info)
245 VEC_free (mem_range_s, info->memory);
251 /* Free and clear the traceframe info cache of the current
255 clear_traceframe_info (void)
257 free_traceframe_info (traceframe_info);
258 traceframe_info = NULL;
261 /* Set traceframe number to NUM. */
263 set_traceframe_num (int num)
265 traceframe_number = num;
266 set_internalvar_integer (lookup_internalvar ("trace_frame"), num);
269 /* Set tracepoint number to NUM. */
271 set_tracepoint_num (int num)
273 tracepoint_number = num;
274 set_internalvar_integer (lookup_internalvar ("tracepoint"), num);
277 /* Set externally visible debug variables for querying/printing
278 the traceframe context (line, function, file). */
281 set_traceframe_context (struct frame_info *trace_frame)
285 /* Save as globals for internal use. */
286 if (trace_frame != NULL
287 && get_frame_pc_if_available (trace_frame, &trace_pc))
289 traceframe_sal = find_pc_line (trace_pc, 0);
290 traceframe_fun = find_pc_function (trace_pc);
292 /* Save linenumber as "$trace_line", a debugger variable visible to
294 set_internalvar_integer (lookup_internalvar ("trace_line"),
295 traceframe_sal.line);
299 init_sal (&traceframe_sal);
300 traceframe_fun = NULL;
301 set_internalvar_integer (lookup_internalvar ("trace_line"), -1);
304 /* Save func name as "$trace_func", a debugger variable visible to
306 if (traceframe_fun == NULL
307 || SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL)
308 clear_internalvar (lookup_internalvar ("trace_func"));
310 set_internalvar_string (lookup_internalvar ("trace_func"),
311 SYMBOL_LINKAGE_NAME (traceframe_fun));
313 /* Save file name as "$trace_file", a debugger variable visible to
315 if (traceframe_sal.symtab == NULL
316 || traceframe_sal.symtab->filename == NULL)
317 clear_internalvar (lookup_internalvar ("trace_file"));
319 set_internalvar_string (lookup_internalvar ("trace_file"),
320 traceframe_sal.symtab->filename);
323 /* Create a new trace state variable with the given name. */
325 struct trace_state_variable *
326 create_trace_state_variable (const char *name)
328 struct trace_state_variable tsv;
330 memset (&tsv, 0, sizeof (tsv));
331 tsv.name = xstrdup (name);
332 tsv.number = next_tsv_number++;
333 return VEC_safe_push (tsv_s, tvariables, &tsv);
336 /* Look for a trace state variable of the given name. */
338 struct trace_state_variable *
339 find_trace_state_variable (const char *name)
341 struct trace_state_variable *tsv;
344 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
345 if (strcmp (name, tsv->name) == 0)
352 delete_trace_state_variable (const char *name)
354 struct trace_state_variable *tsv;
357 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
358 if (strcmp (name, tsv->name) == 0)
360 xfree ((void *)tsv->name);
361 VEC_unordered_remove (tsv_s, tvariables, ix);
365 warning (_("No trace variable named \"$%s\", not deleting"), name);
368 /* The 'tvariable' command collects a name and optional expression to
369 evaluate into an initial value. */
372 trace_variable_command (char *args, int from_tty)
374 struct expression *expr;
375 struct cleanup *old_chain;
376 struct internalvar *intvar = NULL;
378 struct trace_state_variable *tsv;
381 error_no_arg (_("trace state variable name"));
383 /* All the possible valid arguments are expressions. */
384 expr = parse_expression (args);
385 old_chain = make_cleanup (free_current_contents, &expr);
387 if (expr->nelts == 0)
388 error (_("No expression?"));
390 /* Only allow two syntaxes; "$name" and "$name=value". */
391 if (expr->elts[0].opcode == OP_INTERNALVAR)
393 intvar = expr->elts[1].internalvar;
395 else if (expr->elts[0].opcode == BINOP_ASSIGN
396 && expr->elts[1].opcode == OP_INTERNALVAR)
398 intvar = expr->elts[2].internalvar;
399 initval = value_as_long (evaluate_subexpression_type (expr, 4));
402 error (_("Syntax must be $NAME [ = EXPR ]"));
405 error (_("No name given"));
407 if (strlen (internalvar_name (intvar)) <= 0)
408 error (_("Must supply a non-empty variable name"));
410 /* If the variable already exists, just change its initial value. */
411 tsv = find_trace_state_variable (internalvar_name (intvar));
414 tsv->initial_value = initval;
415 printf_filtered (_("Trace state variable $%s "
416 "now has initial value %s.\n"),
417 tsv->name, plongest (tsv->initial_value));
418 do_cleanups (old_chain);
422 /* Create a new variable. */
423 tsv = create_trace_state_variable (internalvar_name (intvar));
424 tsv->initial_value = initval;
426 printf_filtered (_("Trace state variable $%s "
427 "created, with initial value %s.\n"),
428 tsv->name, plongest (tsv->initial_value));
430 do_cleanups (old_chain);
434 delete_trace_variable_command (char *args, int from_tty)
438 struct cleanup *back_to;
442 if (query (_("Delete all trace state variables? ")))
443 VEC_free (tsv_s, tvariables);
448 argv = gdb_buildargv (args);
449 back_to = make_cleanup_freeargv (argv);
451 for (ix = 0; argv[ix] != NULL; ix++)
453 if (*argv[ix] == '$')
454 delete_trace_state_variable (argv[ix] + 1);
456 warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv[ix]);
459 do_cleanups (back_to);
465 tvariables_info_1 (void)
467 struct trace_state_variable *tsv;
470 struct cleanup *back_to;
471 struct ui_out *uiout = current_uiout;
473 if (VEC_length (tsv_s, tvariables) == 0 && !ui_out_is_mi_like_p (uiout))
475 printf_filtered (_("No trace state variables.\n"));
479 /* Try to acquire values from the target. */
480 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix, ++count)
481 tsv->value_known = target_get_trace_state_variable_value (tsv->number,
484 back_to = make_cleanup_ui_out_table_begin_end (uiout, 3,
485 count, "trace-variables");
486 ui_out_table_header (uiout, 15, ui_left, "name", "Name");
487 ui_out_table_header (uiout, 11, ui_left, "initial", "Initial");
488 ui_out_table_header (uiout, 11, ui_left, "current", "Current");
490 ui_out_table_body (uiout);
492 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
494 struct cleanup *back_to2;
498 back_to2 = make_cleanup_ui_out_tuple_begin_end (uiout, "variable");
500 name = concat ("$", tsv->name, (char *) NULL);
501 make_cleanup (xfree, name);
502 ui_out_field_string (uiout, "name", name);
503 ui_out_field_string (uiout, "initial", plongest (tsv->initial_value));
505 if (tsv->value_known)
506 c = plongest (tsv->value);
507 else if (ui_out_is_mi_like_p (uiout))
508 /* For MI, we prefer not to use magic string constants, but rather
509 omit the field completely. The difference between unknown and
510 undefined does not seem important enough to represent. */
512 else if (current_trace_status ()->running || traceframe_number >= 0)
513 /* The value is/was defined, but we don't have it. */
516 /* It is not meaningful to ask about the value. */
519 ui_out_field_string (uiout, "current", c);
520 ui_out_text (uiout, "\n");
522 do_cleanups (back_to2);
525 do_cleanups (back_to);
528 /* List all the trace state variables. */
531 tvariables_info (char *args, int from_tty)
533 tvariables_info_1 ();
536 /* Stash definitions of tsvs into the given file. */
539 save_trace_state_variables (struct ui_file *fp)
541 struct trace_state_variable *tsv;
544 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
546 fprintf_unfiltered (fp, "tvariable $%s", tsv->name);
547 if (tsv->initial_value)
548 fprintf_unfiltered (fp, " = %s", plongest (tsv->initial_value));
549 fprintf_unfiltered (fp, "\n");
553 /* ACTIONS functions: */
555 /* The three functions:
556 collect_pseudocommand,
557 while_stepping_pseudocommand, and
558 end_actions_pseudocommand
559 are placeholders for "commands" that are actually ONLY to be used
560 within a tracepoint action list. If the actual function is ever called,
561 it means that somebody issued the "command" at the top level,
562 which is always an error. */
565 end_actions_pseudocommand (char *args, int from_tty)
567 error (_("This command cannot be used at the top level."));
571 while_stepping_pseudocommand (char *args, int from_tty)
573 error (_("This command can only be used in a tracepoint actions list."));
577 collect_pseudocommand (char *args, int from_tty)
579 error (_("This command can only be used in a tracepoint actions list."));
583 teval_pseudocommand (char *args, int from_tty)
585 error (_("This command can only be used in a tracepoint actions list."));
588 /* Parse any collection options, such as /s for strings. */
591 decode_agent_options (char *exp)
593 struct value_print_options opts;
598 /* Call this to borrow the print elements default for collection
600 get_user_print_options (&opts);
605 if (target_supports_string_tracing ())
607 /* Allow an optional decimal number giving an explicit maximum
608 string length, defaulting it to the "print elements" value;
609 so "collect/s80 mystr" gets at most 80 bytes of string. */
610 trace_string_kludge = opts.print_max;
612 if (*exp >= '0' && *exp <= '9')
613 trace_string_kludge = atoi (exp);
614 while (*exp >= '0' && *exp <= '9')
618 error (_("Target does not support \"/s\" option for string tracing."));
621 error (_("Undefined collection format \"%c\"."), *exp);
623 exp = skip_spaces (exp);
628 /* Enter a list of actions for a tracepoint. */
630 trace_actions_command (char *args, int from_tty)
632 struct tracepoint *t;
633 struct command_line *l;
635 t = get_tracepoint_by_number (&args, NULL, 1);
639 xstrprintf ("Enter actions for tracepoint %d, one per line.",
641 struct cleanup *cleanups = make_cleanup (xfree, tmpbuf);
643 l = read_command_lines (tmpbuf, from_tty, 1,
644 check_tracepoint_command, t);
645 do_cleanups (cleanups);
646 breakpoint_set_commands (&t->base, l);
648 /* else just return */
651 /* Report the results of checking the agent expression, as errors or
655 report_agent_reqs_errors (struct agent_expr *aexpr)
657 /* All of the "flaws" are serious bytecode generation issues that
658 should never occur. */
659 if (aexpr->flaw != agent_flaw_none)
660 internal_error (__FILE__, __LINE__, _("expression is malformed"));
662 /* If analysis shows a stack underflow, GDB must have done something
663 badly wrong in its bytecode generation. */
664 if (aexpr->min_height < 0)
665 internal_error (__FILE__, __LINE__,
666 _("expression has min height < 0"));
668 /* Issue this error if the stack is predicted to get too deep. The
669 limit is rather arbitrary; a better scheme might be for the
670 target to report how much stack it will have available. The
671 depth roughly corresponds to parenthesization, so a limit of 20
672 amounts to 20 levels of expression nesting, which is actually
673 a pretty big hairy expression. */
674 if (aexpr->max_height > 20)
675 error (_("Expression is too complicated."));
678 /* worker function */
680 validate_actionline (char **line, struct breakpoint *b)
682 struct cmd_list_element *c;
683 struct expression *exp = NULL;
684 struct cleanup *old_chain = NULL;
686 struct bp_location *loc;
687 struct agent_expr *aexpr;
688 struct tracepoint *t = (struct tracepoint *) b;
690 /* If EOF is typed, *line is NULL. */
694 for (p = *line; isspace ((int) *p);)
697 /* Symbol lookup etc. */
698 if (*p == '\0') /* empty line: just prompt for another line. */
701 if (*p == '#') /* comment line */
704 c = lookup_cmd (&p, cmdlist, "", -1, 1);
706 error (_("`%s' is not a tracepoint action, or is ambiguous."), p);
708 if (cmd_cfunc_eq (c, collect_pseudocommand))
710 trace_string_kludge = 0;
712 p = decode_agent_options (p);
715 { /* Repeat over a comma-separated list. */
716 QUIT; /* Allow user to bail out with ^C. */
717 while (isspace ((int) *p))
720 if (*p == '$') /* Look for special pseudo-symbols. */
722 if (0 == strncasecmp ("reg", p + 1, 3)
723 || 0 == strncasecmp ("arg", p + 1, 3)
724 || 0 == strncasecmp ("loc", p + 1, 3)
725 || 0 == strncasecmp ("_ret", p + 1, 4)
726 || 0 == strncasecmp ("_sdata", p + 1, 6))
731 /* else fall thru, treat p as an expression and parse it! */
734 for (loc = t->base.loc; loc; loc = loc->next)
737 exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
738 old_chain = make_cleanup (free_current_contents, &exp);
740 if (exp->elts[0].opcode == OP_VAR_VALUE)
742 if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST)
744 error (_("constant `%s' (value %ld) "
745 "will not be collected."),
746 SYMBOL_PRINT_NAME (exp->elts[2].symbol),
747 SYMBOL_VALUE (exp->elts[2].symbol));
749 else if (SYMBOL_CLASS (exp->elts[2].symbol)
750 == LOC_OPTIMIZED_OUT)
752 error (_("`%s' is optimized away "
753 "and cannot be collected."),
754 SYMBOL_PRINT_NAME (exp->elts[2].symbol));
758 /* We have something to collect, make sure that the expr to
759 bytecode translator can handle it and that it's not too
761 aexpr = gen_trace_for_expr (loc->address, exp);
762 make_cleanup_free_agent_expr (aexpr);
764 if (aexpr->len > MAX_AGENT_EXPR_LEN)
765 error (_("Expression is too complicated."));
769 report_agent_reqs_errors (aexpr);
771 do_cleanups (old_chain);
774 while (p && *p++ == ',');
777 else if (cmd_cfunc_eq (c, teval_pseudocommand))
780 { /* Repeat over a comma-separated list. */
781 QUIT; /* Allow user to bail out with ^C. */
782 while (isspace ((int) *p))
786 for (loc = t->base.loc; loc; loc = loc->next)
789 /* Only expressions are allowed for this action. */
790 exp = parse_exp_1 (&p, block_for_pc (loc->address), 1);
791 old_chain = make_cleanup (free_current_contents, &exp);
793 /* We have something to evaluate, make sure that the expr to
794 bytecode translator can handle it and that it's not too
796 aexpr = gen_eval_for_expr (loc->address, exp);
797 make_cleanup_free_agent_expr (aexpr);
799 if (aexpr->len > MAX_AGENT_EXPR_LEN)
800 error (_("Expression is too complicated."));
803 report_agent_reqs_errors (aexpr);
805 do_cleanups (old_chain);
808 while (p && *p++ == ',');
811 else if (cmd_cfunc_eq (c, while_stepping_pseudocommand))
813 char *steparg; /* In case warning is necessary. */
815 while (isspace ((int) *p))
819 if (*p == '\0' || (t->step_count = strtol (p, &p, 0)) == 0)
820 error (_("while-stepping step count `%s' is malformed."), *line);
823 else if (cmd_cfunc_eq (c, end_actions_pseudocommand))
827 error (_("`%s' is not a supported tracepoint action."), *line);
831 memrange_absolute = -1
836 int type; /* memrange_absolute for absolute memory range,
837 else basereg number. */
838 bfd_signed_vma start;
842 struct collection_list
844 unsigned char regs_mask[32]; /* room for up to 256 regs */
847 struct memrange *list;
848 long aexpr_listsize; /* size of array pointed to by expr_list elt */
850 struct agent_expr **aexpr_list;
852 /* True is the user requested a collection of "$_sdata", "static
856 tracepoint_list, stepping_list;
858 /* MEMRANGE functions: */
860 static int memrange_cmp (const void *, const void *);
862 /* Compare memranges for qsort. */
864 memrange_cmp (const void *va, const void *vb)
866 const struct memrange *a = va, *b = vb;
868 if (a->type < b->type)
870 if (a->type > b->type)
872 if (a->type == memrange_absolute)
874 if ((bfd_vma) a->start < (bfd_vma) b->start)
876 if ((bfd_vma) a->start > (bfd_vma) b->start)
881 if (a->start < b->start)
883 if (a->start > b->start)
889 /* Sort the memrange list using qsort, and merge adjacent memranges. */
891 memrange_sortmerge (struct collection_list *memranges)
895 qsort (memranges->list, memranges->next_memrange,
896 sizeof (struct memrange), memrange_cmp);
897 if (memranges->next_memrange > 0)
899 for (a = 0, b = 1; b < memranges->next_memrange; b++)
901 /* If memrange b overlaps or is adjacent to memrange a,
903 if (memranges->list[a].type == memranges->list[b].type
904 && memranges->list[b].start <= memranges->list[a].end)
906 if (memranges->list[b].end > memranges->list[a].end)
907 memranges->list[a].end = memranges->list[b].end;
908 continue; /* next b, same a */
912 memcpy (&memranges->list[a], &memranges->list[b],
913 sizeof (struct memrange));
915 memranges->next_memrange = a + 1;
919 /* Add a register to a collection list. */
921 add_register (struct collection_list *collection, unsigned int regno)
924 printf_filtered ("collect register %d\n", regno);
925 if (regno >= (8 * sizeof (collection->regs_mask)))
926 error (_("Internal: register number %d too large for tracepoint"),
928 collection->regs_mask[regno / 8] |= 1 << (regno % 8);
931 /* Add a memrange to a collection list. */
933 add_memrange (struct collection_list *memranges,
934 int type, bfd_signed_vma base,
939 printf_filtered ("(%d,", type);
941 printf_filtered (",%ld)\n", len);
944 /* type: memrange_absolute == memory, other n == basereg */
945 memranges->list[memranges->next_memrange].type = type;
946 /* base: addr if memory, offset if reg relative. */
947 memranges->list[memranges->next_memrange].start = base;
948 /* len: we actually save end (base + len) for convenience */
949 memranges->list[memranges->next_memrange].end = base + len;
950 memranges->next_memrange++;
951 if (memranges->next_memrange >= memranges->listsize)
953 memranges->listsize *= 2;
954 memranges->list = xrealloc (memranges->list,
955 memranges->listsize);
958 if (type != memrange_absolute) /* Better collect the base register! */
959 add_register (memranges, type);
962 /* Add a symbol to a collection list. */
964 collect_symbol (struct collection_list *collect,
966 struct gdbarch *gdbarch,
967 long frame_regno, long frame_offset,
972 bfd_signed_vma offset;
973 int treat_as_expr = 0;
975 len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)));
976 switch (SYMBOL_CLASS (sym))
979 printf_filtered ("%s: don't know symbol class %d\n",
980 SYMBOL_PRINT_NAME (sym),
984 printf_filtered ("constant %s (value %ld) will not be collected.\n",
985 SYMBOL_PRINT_NAME (sym), SYMBOL_VALUE (sym));
988 offset = SYMBOL_VALUE_ADDRESS (sym);
993 sprintf_vma (tmp, offset);
994 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
995 SYMBOL_PRINT_NAME (sym), len,
998 /* A struct may be a C++ class with static fields, go to general
999 expression handling. */
1000 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
1003 add_memrange (collect, memrange_absolute, offset, len);
1006 reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
1008 printf_filtered ("LOC_REG[parm] %s: ",
1009 SYMBOL_PRINT_NAME (sym));
1010 add_register (collect, reg);
1011 /* Check for doubles stored in two registers. */
1012 /* FIXME: how about larger types stored in 3 or more regs? */
1013 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
1014 len > register_size (gdbarch, reg))
1015 add_register (collect, reg + 1);
1018 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
1019 printf_filtered (" (will not collect %s)\n",
1020 SYMBOL_PRINT_NAME (sym));
1024 offset = frame_offset + SYMBOL_VALUE (sym);
1027 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1028 SYMBOL_PRINT_NAME (sym), len);
1029 printf_vma (offset);
1030 printf_filtered (" from frame ptr reg %d\n", reg);
1032 add_memrange (collect, reg, offset, len);
1034 case LOC_REGPARM_ADDR:
1035 reg = SYMBOL_VALUE (sym);
1039 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
1040 SYMBOL_PRINT_NAME (sym), len);
1041 printf_vma (offset);
1042 printf_filtered (" from reg %d\n", reg);
1044 add_memrange (collect, reg, offset, len);
1048 offset = frame_offset + SYMBOL_VALUE (sym);
1051 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1052 SYMBOL_PRINT_NAME (sym), len);
1053 printf_vma (offset);
1054 printf_filtered (" from frame ptr reg %d\n", reg);
1056 add_memrange (collect, reg, offset, len);
1059 case LOC_UNRESOLVED:
1063 case LOC_OPTIMIZED_OUT:
1064 printf_filtered ("%s has been optimized out of existence.\n",
1065 SYMBOL_PRINT_NAME (sym));
1073 /* Expressions are the most general case. */
1076 struct agent_expr *aexpr;
1077 struct cleanup *old_chain1 = NULL;
1079 aexpr = gen_trace_for_var (scope, gdbarch, sym);
1081 /* It can happen that the symbol is recorded as a computed
1082 location, but it's been optimized away and doesn't actually
1083 have a location expression. */
1086 printf_filtered ("%s has been optimized out of existence.\n",
1087 SYMBOL_PRINT_NAME (sym));
1091 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1095 report_agent_reqs_errors (aexpr);
1097 discard_cleanups (old_chain1);
1098 add_aexpr (collect, aexpr);
1100 /* Take care of the registers. */
1101 if (aexpr->reg_mask_len > 0)
1105 for (ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
1107 QUIT; /* Allow user to bail out with ^C. */
1108 if (aexpr->reg_mask[ndx1] != 0)
1110 /* Assume chars have 8 bits. */
1111 for (ndx2 = 0; ndx2 < 8; ndx2++)
1112 if (aexpr->reg_mask[ndx1] & (1 << ndx2))
1113 /* It's used -- record it. */
1114 add_register (collect, ndx1 * 8 + ndx2);
1121 /* Data to be passed around in the calls to the locals and args
1124 struct add_local_symbols_data
1126 struct collection_list *collect;
1127 struct gdbarch *gdbarch;
1134 /* The callback for the locals and args iterators. */
1137 do_collect_symbol (const char *print_name,
1141 struct add_local_symbols_data *p = cb_data;
1143 collect_symbol (p->collect, sym, p->gdbarch, p->frame_regno,
1144 p->frame_offset, p->pc);
1148 /* Add all locals (or args) symbols to collection list. */
1150 add_local_symbols (struct collection_list *collect,
1151 struct gdbarch *gdbarch, CORE_ADDR pc,
1152 long frame_regno, long frame_offset, int type)
1154 struct block *block;
1155 struct add_local_symbols_data cb_data;
1157 cb_data.collect = collect;
1158 cb_data.gdbarch = gdbarch;
1160 cb_data.frame_regno = frame_regno;
1161 cb_data.frame_offset = frame_offset;
1166 block = block_for_pc (pc);
1169 warning (_("Can't collect locals; "
1170 "no symbol table info available.\n"));
1174 iterate_over_block_local_vars (block, do_collect_symbol, &cb_data);
1175 if (cb_data.count == 0)
1176 warning (_("No locals found in scope."));
1180 pc = get_pc_function_start (pc);
1181 block = block_for_pc (pc);
1184 warning (_("Can't collect args; no symbol table info available."));
1188 iterate_over_block_arg_vars (block, do_collect_symbol, &cb_data);
1189 if (cb_data.count == 0)
1190 warning (_("No args found in scope."));
1195 add_static_trace_data (struct collection_list *collection)
1198 printf_filtered ("collect static trace data\n");
1199 collection->strace_data = 1;
1202 /* worker function */
1204 clear_collection_list (struct collection_list *list)
1208 list->next_memrange = 0;
1209 for (ndx = 0; ndx < list->next_aexpr_elt; ndx++)
1211 free_agent_expr (list->aexpr_list[ndx]);
1212 list->aexpr_list[ndx] = NULL;
1214 list->next_aexpr_elt = 0;
1215 memset (list->regs_mask, 0, sizeof (list->regs_mask));
1216 list->strace_data = 0;
1219 /* Reduce a collection list to string form (for gdb protocol). */
1221 stringify_collection_list (struct collection_list *list, char *string)
1223 char temp_buf[2048];
1227 char *(*str_list)[];
1231 count = 1 + 1 + list->next_memrange + list->next_aexpr_elt + 1;
1232 str_list = (char *(*)[]) xmalloc (count * sizeof (char *));
1234 if (list->strace_data)
1237 printf_filtered ("\nCollecting static trace data\n");
1240 (*str_list)[ndx] = savestring (temp_buf, end - temp_buf);
1244 for (i = sizeof (list->regs_mask) - 1; i > 0; i--)
1245 if (list->regs_mask[i] != 0) /* Skip leading zeroes in regs_mask. */
1247 if (list->regs_mask[i] != 0) /* Prepare to send regs_mask to the stub. */
1250 printf_filtered ("\nCollecting registers (mask): 0x");
1255 QUIT; /* Allow user to bail out with ^C. */
1257 printf_filtered ("%02X", list->regs_mask[i]);
1258 sprintf (end, "%02X", list->regs_mask[i]);
1261 (*str_list)[ndx] = xstrdup (temp_buf);
1265 printf_filtered ("\n");
1266 if (list->next_memrange > 0 && info_verbose)
1267 printf_filtered ("Collecting memranges: \n");
1268 for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++)
1270 QUIT; /* Allow user to bail out with ^C. */
1271 sprintf_vma (tmp2, list->list[i].start);
1274 printf_filtered ("(%d, %s, %ld)\n",
1277 (long) (list->list[i].end - list->list[i].start));
1279 if (count + 27 > MAX_AGENT_EXPR_LEN)
1281 (*str_list)[ndx] = savestring (temp_buf, count);
1288 bfd_signed_vma length = list->list[i].end - list->list[i].start;
1290 /* The "%X" conversion specifier expects an unsigned argument,
1291 so passing -1 (memrange_absolute) to it directly gives you
1292 "FFFFFFFF" (or more, depending on sizeof (unsigned)).
1294 if (list->list[i].type == memrange_absolute)
1295 sprintf (end, "M-1,%s,%lX", tmp2, (long) length);
1297 sprintf (end, "M%X,%s,%lX", list->list[i].type, tmp2, (long) length);
1300 count += strlen (end);
1301 end = temp_buf + count;
1304 for (i = 0; i < list->next_aexpr_elt; i++)
1306 QUIT; /* Allow user to bail out with ^C. */
1307 if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN)
1309 (*str_list)[ndx] = savestring (temp_buf, count);
1314 sprintf (end, "X%08X,", list->aexpr_list[i]->len);
1315 end += 10; /* 'X' + 8 hex digits + ',' */
1318 end = mem2hex (list->aexpr_list[i]->buf,
1319 end, list->aexpr_list[i]->len);
1320 count += 2 * list->aexpr_list[i]->len;
1325 (*str_list)[ndx] = savestring (temp_buf, count);
1330 (*str_list)[ndx] = NULL;
1343 encode_actions_1 (struct command_line *action,
1344 struct breakpoint *t,
1345 struct bp_location *tloc,
1347 LONGEST frame_offset,
1348 struct collection_list *collect,
1349 struct collection_list *stepping_list)
1352 struct expression *exp = NULL;
1354 struct value *tempval;
1355 struct cmd_list_element *cmd;
1356 struct agent_expr *aexpr;
1358 for (; action; action = action->next)
1360 QUIT; /* Allow user to bail out with ^C. */
1361 action_exp = action->line;
1362 while (isspace ((int) *action_exp))
1365 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
1367 error (_("Bad action list item: %s"), action_exp);
1369 if (cmd_cfunc_eq (cmd, collect_pseudocommand))
1371 trace_string_kludge = 0;
1372 if (*action_exp == '/')
1373 action_exp = decode_agent_options (action_exp);
1376 { /* Repeat over a comma-separated list. */
1377 QUIT; /* Allow user to bail out with ^C. */
1378 while (isspace ((int) *action_exp))
1381 if (0 == strncasecmp ("$reg", action_exp, 4))
1383 for (i = 0; i < gdbarch_num_regs (tloc->gdbarch); i++)
1384 add_register (collect, i);
1385 action_exp = strchr (action_exp, ','); /* more? */
1387 else if (0 == strncasecmp ("$arg", action_exp, 4))
1389 add_local_symbols (collect,
1395 action_exp = strchr (action_exp, ','); /* more? */
1397 else if (0 == strncasecmp ("$loc", action_exp, 4))
1399 add_local_symbols (collect,
1405 action_exp = strchr (action_exp, ','); /* more? */
1407 else if (0 == strncasecmp ("$_ret", action_exp, 5))
1409 struct cleanup *old_chain1 = NULL;
1411 aexpr = gen_trace_for_return_address (tloc->address,
1414 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1417 report_agent_reqs_errors (aexpr);
1419 discard_cleanups (old_chain1);
1420 add_aexpr (collect, aexpr);
1422 /* take care of the registers */
1423 if (aexpr->reg_mask_len > 0)
1427 for (ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
1429 QUIT; /* allow user to bail out with ^C */
1430 if (aexpr->reg_mask[ndx1] != 0)
1432 /* assume chars have 8 bits */
1433 for (ndx2 = 0; ndx2 < 8; ndx2++)
1434 if (aexpr->reg_mask[ndx1] & (1 << ndx2))
1435 /* it's used -- record it */
1436 add_register (collect,
1442 action_exp = strchr (action_exp, ','); /* more? */
1444 else if (0 == strncasecmp ("$_sdata", action_exp, 7))
1446 add_static_trace_data (collect);
1447 action_exp = strchr (action_exp, ','); /* more? */
1451 unsigned long addr, len;
1452 struct cleanup *old_chain = NULL;
1453 struct cleanup *old_chain1 = NULL;
1455 exp = parse_exp_1 (&action_exp,
1456 block_for_pc (tloc->address), 1);
1457 old_chain = make_cleanup (free_current_contents, &exp);
1459 switch (exp->elts[0].opcode)
1463 const char *name = &exp->elts[2].string;
1465 i = user_reg_map_name_to_regnum (tloc->gdbarch,
1466 name, strlen (name));
1468 internal_error (__FILE__, __LINE__,
1469 _("Register $%s not available"),
1472 printf_filtered ("OP_REGISTER: ");
1473 add_register (collect, i);
1478 /* Safe because we know it's a simple expression. */
1479 tempval = evaluate_expression (exp);
1480 addr = value_address (tempval);
1481 len = TYPE_LENGTH (check_typedef (exp->elts[1].type));
1482 add_memrange (collect, memrange_absolute, addr, len);
1486 collect_symbol (collect,
1487 exp->elts[2].symbol,
1494 default: /* Full-fledged expression. */
1495 aexpr = gen_trace_for_expr (tloc->address, exp);
1497 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1501 report_agent_reqs_errors (aexpr);
1503 discard_cleanups (old_chain1);
1504 add_aexpr (collect, aexpr);
1506 /* Take care of the registers. */
1507 if (aexpr->reg_mask_len > 0)
1512 for (ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
1514 QUIT; /* Allow user to bail out with ^C. */
1515 if (aexpr->reg_mask[ndx1] != 0)
1517 /* Assume chars have 8 bits. */
1518 for (ndx2 = 0; ndx2 < 8; ndx2++)
1519 if (aexpr->reg_mask[ndx1] & (1 << ndx2))
1520 /* It's used -- record it. */
1521 add_register (collect,
1528 do_cleanups (old_chain);
1531 while (action_exp && *action_exp++ == ',');
1533 else if (cmd_cfunc_eq (cmd, teval_pseudocommand))
1536 { /* Repeat over a comma-separated list. */
1537 QUIT; /* Allow user to bail out with ^C. */
1538 while (isspace ((int) *action_exp))
1542 struct cleanup *old_chain = NULL;
1543 struct cleanup *old_chain1 = NULL;
1545 exp = parse_exp_1 (&action_exp,
1546 block_for_pc (tloc->address), 1);
1547 old_chain = make_cleanup (free_current_contents, &exp);
1549 aexpr = gen_eval_for_expr (tloc->address, exp);
1550 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1553 report_agent_reqs_errors (aexpr);
1555 discard_cleanups (old_chain1);
1556 /* Even though we're not officially collecting, add
1557 to the collect list anyway. */
1558 add_aexpr (collect, aexpr);
1560 do_cleanups (old_chain);
1563 while (action_exp && *action_exp++ == ',');
1565 else if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
1567 /* We check against nested while-stepping when setting
1568 breakpoint action, so no way to run into nested
1570 gdb_assert (stepping_list);
1572 encode_actions_1 (action->body_list[0], t, tloc, frame_reg,
1573 frame_offset, stepping_list, NULL);
1576 error (_("Invalid tracepoint command '%s'"), action->line);
1580 /* Render all actions into gdb protocol. */
1582 encode_actions (struct breakpoint *t, struct bp_location *tloc,
1583 char ***tdp_actions, char ***stepping_actions)
1585 static char tdp_buff[2048], step_buff[2048];
1586 char *default_collect_line = NULL;
1587 struct command_line *actions;
1588 struct command_line *default_collect_action = NULL;
1590 LONGEST frame_offset;
1591 struct cleanup *back_to;
1593 back_to = make_cleanup (null_cleanup, NULL);
1595 clear_collection_list (&tracepoint_list);
1596 clear_collection_list (&stepping_list);
1598 *tdp_actions = NULL;
1599 *stepping_actions = NULL;
1601 gdbarch_virtual_frame_pointer (tloc->gdbarch,
1602 tloc->address, &frame_reg, &frame_offset);
1604 actions = breakpoint_commands (t);
1606 /* If there are default expressions to collect, make up a collect
1607 action and prepend to the action list to encode. Note that since
1608 validation is per-tracepoint (local var "xyz" might be valid for
1609 one tracepoint and not another, etc), we make up the action on
1610 the fly, and don't cache it. */
1611 if (*default_collect)
1615 default_collect_line = xstrprintf ("collect %s", default_collect);
1616 make_cleanup (xfree, default_collect_line);
1618 line = default_collect_line;
1619 validate_actionline (&line, t);
1621 default_collect_action = xmalloc (sizeof (struct command_line));
1622 make_cleanup (xfree, default_collect_action);
1623 default_collect_action->next = actions;
1624 default_collect_action->line = line;
1625 actions = default_collect_action;
1627 encode_actions_1 (actions, t, tloc, frame_reg, frame_offset,
1628 &tracepoint_list, &stepping_list);
1630 memrange_sortmerge (&tracepoint_list);
1631 memrange_sortmerge (&stepping_list);
1633 *tdp_actions = stringify_collection_list (&tracepoint_list,
1635 *stepping_actions = stringify_collection_list (&stepping_list,
1638 do_cleanups (back_to);
1642 add_aexpr (struct collection_list *collect, struct agent_expr *aexpr)
1644 if (collect->next_aexpr_elt >= collect->aexpr_listsize)
1646 collect->aexpr_list =
1647 xrealloc (collect->aexpr_list,
1648 2 * collect->aexpr_listsize * sizeof (struct agent_expr *));
1649 collect->aexpr_listsize *= 2;
1651 collect->aexpr_list[collect->next_aexpr_elt] = aexpr;
1652 collect->next_aexpr_elt++;
1656 process_tracepoint_on_disconnect (void)
1658 VEC(breakpoint_p) *tp_vec = NULL;
1660 struct breakpoint *b;
1661 int has_pending_p = 0;
1663 /* Check whether we still have pending tracepoint. If we have, warn the
1664 user that pending tracepoint will no longer work. */
1665 tp_vec = all_tracepoints ();
1666 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++)
1675 struct bp_location *loc1;
1677 for (loc1 = b->loc; loc1; loc1 = loc1->next)
1679 if (loc1->shlib_disabled)
1690 VEC_free (breakpoint_p, tp_vec);
1693 warning (_("Pending tracepoints will not be resolved while"
1694 " GDB is disconnected\n"));
1699 start_tracing (char *notes)
1701 VEC(breakpoint_p) *tp_vec = NULL;
1703 struct breakpoint *b;
1704 struct trace_state_variable *tsv;
1705 int any_enabled = 0, num_to_download = 0;
1708 tp_vec = all_tracepoints ();
1710 /* No point in tracing without any tracepoints... */
1711 if (VEC_length (breakpoint_p, tp_vec) == 0)
1713 VEC_free (breakpoint_p, tp_vec);
1714 error (_("No tracepoints defined, not starting trace"));
1717 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++)
1719 struct tracepoint *t = (struct tracepoint *) b;
1721 if (b->enable_state == bp_enabled)
1724 if ((b->type == bp_fast_tracepoint
1725 ? may_insert_fast_tracepoints
1726 : may_insert_tracepoints))
1729 warning (_("May not insert %stracepoints, skipping tracepoint %d"),
1730 (b->type == bp_fast_tracepoint ? "fast " : ""), b->number);
1735 if (target_supports_enable_disable_tracepoint ())
1736 warning (_("No tracepoints enabled"));
1739 /* No point in tracing with only disabled tracepoints that
1740 cannot be re-enabled. */
1741 VEC_free (breakpoint_p, tp_vec);
1742 error (_("No tracepoints enabled, not starting trace"));
1746 if (num_to_download <= 0)
1748 VEC_free (breakpoint_p, tp_vec);
1749 error (_("No tracepoints that may be downloaded, not starting trace"));
1752 target_trace_init ();
1754 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++)
1756 struct tracepoint *t = (struct tracepoint *) b;
1757 struct bp_location *loc;
1759 if ((b->type == bp_fast_tracepoint
1760 ? !may_insert_fast_tracepoints
1761 : !may_insert_tracepoints))
1764 t->number_on_target = 0;
1766 for (loc = b->loc; loc; loc = loc->next)
1768 /* Since tracepoint locations are never duplicated, `inserted'
1769 flag should be zero. */
1770 gdb_assert (!loc->inserted);
1772 target_download_tracepoint (loc);
1777 t->number_on_target = b->number;
1779 VEC_free (breakpoint_p, tp_vec);
1781 /* Send down all the trace state variables too. */
1782 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
1784 target_download_trace_state_variable (tsv);
1787 /* Tell target to treat text-like sections as transparent. */
1788 target_trace_set_readonly_regions ();
1789 /* Set some mode flags. */
1790 target_set_disconnected_tracing (disconnected_tracing);
1791 target_set_circular_trace_buffer (circular_trace_buffer);
1794 notes = trace_notes;
1795 ret = target_set_trace_notes (trace_user, notes, NULL);
1797 if (!ret && (trace_user || notes))
1798 warning ("Target does not support trace user/notes, info ignored");
1800 /* Now insert traps and begin collecting data. */
1801 target_trace_start ();
1803 /* Reset our local state. */
1804 set_traceframe_num (-1);
1805 set_tracepoint_num (-1);
1806 set_traceframe_context (NULL);
1807 current_trace_status()->running = 1;
1808 clear_traceframe_info ();
1811 /* The tstart command requests the target to start a new trace run.
1812 The command passes any arguments it has to the target verbatim, as
1813 an optional "trace note". This is useful as for instance a warning
1814 to other users if the trace runs disconnected, and you don't want
1815 anybody else messing with the target. */
1818 trace_start_command (char *args, int from_tty)
1820 dont_repeat (); /* Like "run", dangerous to repeat accidentally. */
1822 if (current_trace_status ()->running)
1825 && !query (_("A trace is running already. Start a new run? ")))
1826 error (_("New trace run not started."));
1829 start_tracing (args);
1832 /* The tstop command stops the tracing run. The command passes any
1833 supplied arguments to the target verbatim as a "stop note"; if the
1834 target supports trace notes, then it will be reported back as part
1835 of the trace run's status. */
1838 trace_stop_command (char *args, int from_tty)
1840 if (!current_trace_status ()->running)
1841 error (_("Trace is not running."));
1843 stop_tracing (args);
1847 stop_tracing (char *note)
1851 target_trace_stop ();
1854 note = trace_stop_notes;
1855 ret = target_set_trace_notes (NULL, NULL, note);
1858 warning ("Target does not support trace notes, note ignored");
1860 /* Should change in response to reply? */
1861 current_trace_status ()->running = 0;
1864 /* tstatus command */
1866 trace_status_command (char *args, int from_tty)
1868 struct trace_status *ts = current_trace_status ();
1870 VEC(breakpoint_p) *tp_vec = NULL;
1871 struct breakpoint *t;
1873 status = target_get_trace_status (ts);
1878 printf_filtered (_("Using a trace file.\n"));
1881 printf_filtered (_("Trace can not be run on this target.\n"));
1886 if (!ts->running_known)
1888 printf_filtered (_("Run/stop status is unknown.\n"));
1890 else if (ts->running)
1892 printf_filtered (_("Trace is running on the target.\n"));
1896 switch (ts->stop_reason)
1898 case trace_never_run:
1899 printf_filtered (_("No trace has been run on the target.\n"));
1903 printf_filtered (_("Trace stopped by a tstop command (%s).\n"),
1906 printf_filtered (_("Trace stopped by a tstop command.\n"));
1908 case trace_buffer_full:
1909 printf_filtered (_("Trace stopped because the buffer was full.\n"));
1911 case trace_disconnected:
1912 printf_filtered (_("Trace stopped because of disconnection.\n"));
1914 case tracepoint_passcount:
1915 printf_filtered (_("Trace stopped by tracepoint %d.\n"),
1916 ts->stopping_tracepoint);
1918 case tracepoint_error:
1919 if (ts->stopping_tracepoint)
1920 printf_filtered (_("Trace stopped by an "
1921 "error (%s, tracepoint %d).\n"),
1922 ts->stop_desc, ts->stopping_tracepoint);
1924 printf_filtered (_("Trace stopped by an error (%s).\n"),
1927 case trace_stop_reason_unknown:
1928 printf_filtered (_("Trace stopped for an unknown reason.\n"));
1931 printf_filtered (_("Trace stopped for some other reason (%d).\n"),
1937 if (ts->traceframes_created >= 0
1938 && ts->traceframe_count != ts->traceframes_created)
1940 printf_filtered (_("Buffer contains %d trace "
1941 "frames (of %d created total).\n"),
1942 ts->traceframe_count, ts->traceframes_created);
1944 else if (ts->traceframe_count >= 0)
1946 printf_filtered (_("Collected %d trace frames.\n"),
1947 ts->traceframe_count);
1950 if (ts->buffer_free >= 0)
1952 if (ts->buffer_size >= 0)
1954 printf_filtered (_("Trace buffer has %d bytes of %d bytes free"),
1955 ts->buffer_free, ts->buffer_size);
1956 if (ts->buffer_size > 0)
1957 printf_filtered (_(" (%d%% full)"),
1958 ((int) ((((long long) (ts->buffer_size
1959 - ts->buffer_free)) * 100)
1960 / ts->buffer_size)));
1961 printf_filtered (_(".\n"));
1964 printf_filtered (_("Trace buffer has %d bytes free.\n"),
1968 if (ts->disconnected_tracing)
1969 printf_filtered (_("Trace will continue if GDB disconnects.\n"));
1971 printf_filtered (_("Trace will stop if GDB disconnects.\n"));
1973 if (ts->circular_buffer)
1974 printf_filtered (_("Trace buffer is circular.\n"));
1976 if (ts->user_name && strlen (ts->user_name) > 0)
1977 printf_filtered (_("Trace user is %s.\n"), ts->user_name);
1979 if (ts->notes && strlen (ts->notes) > 0)
1980 printf_filtered (_("Trace notes: %s.\n"), ts->notes);
1982 /* Now report on what we're doing with tfind. */
1983 if (traceframe_number >= 0)
1984 printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"),
1985 traceframe_number, tracepoint_number);
1987 printf_filtered (_("Not looking at any trace frame.\n"));
1989 /* Report start/stop times if supplied. */
1994 LONGEST run_time = ts->stop_time - ts->start_time;
1996 /* Reporting a run time is more readable than two long numbers. */
1997 printf_filtered (_("Trace started at %ld.%06ld secs, stopped %ld.%06ld secs later.\n"),
1998 (long int) ts->start_time / 1000000,
1999 (long int) ts->start_time % 1000000,
2000 (long int) run_time / 1000000,
2001 (long int) run_time % 1000000);
2004 printf_filtered (_("Trace started at %ld.%06ld secs.\n"),
2005 (long int) ts->start_time / 1000000,
2006 (long int) ts->start_time % 1000000);
2008 else if (ts->stop_time)
2009 printf_filtered (_("Trace stopped at %ld.%06ld secs.\n"),
2010 (long int) ts->stop_time / 1000000,
2011 (long int) ts->stop_time % 1000000);
2013 /* Now report any per-tracepoint status available. */
2014 tp_vec = all_tracepoints ();
2016 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++)
2017 target_get_tracepoint_status (t, NULL);
2019 VEC_free (breakpoint_p, tp_vec);
2022 /* Report the trace status to uiout, in a way suitable for MI, and not
2023 suitable for CLI. If ON_STOP is true, suppress a few fields that
2024 are not meaningful in the -trace-stop response.
2026 The implementation is essentially parallel to trace_status_command, but
2027 merging them will result in unreadable code. */
2029 trace_status_mi (int on_stop)
2031 struct ui_out *uiout = current_uiout;
2032 struct trace_status *ts = current_trace_status ();
2035 status = target_get_trace_status (ts);
2037 if (status == -1 && !ts->from_file)
2039 ui_out_field_string (uiout, "supported", "0");
2044 ui_out_field_string (uiout, "supported", "file");
2046 ui_out_field_string (uiout, "supported", "1");
2048 gdb_assert (ts->running_known);
2052 ui_out_field_string (uiout, "running", "1");
2054 /* Unlike CLI, do not show the state of 'disconnected-tracing' variable.
2055 Given that the frontend gets the status either on -trace-stop, or from
2056 -trace-status after re-connection, it does not seem like this
2057 information is necessary for anything. It is not necessary for either
2058 figuring the vital state of the target nor for navigation of trace
2059 frames. If the frontend wants to show the current state is some
2060 configure dialog, it can request the value when such dialog is
2061 invoked by the user. */
2065 char *stop_reason = NULL;
2066 int stopping_tracepoint = -1;
2069 ui_out_field_string (uiout, "running", "0");
2071 if (ts->stop_reason != trace_stop_reason_unknown)
2073 switch (ts->stop_reason)
2076 stop_reason = "request";
2078 case trace_buffer_full:
2079 stop_reason = "overflow";
2081 case trace_disconnected:
2082 stop_reason = "disconnection";
2084 case tracepoint_passcount:
2085 stop_reason = "passcount";
2086 stopping_tracepoint = ts->stopping_tracepoint;
2088 case tracepoint_error:
2089 stop_reason = "error";
2090 stopping_tracepoint = ts->stopping_tracepoint;
2096 ui_out_field_string (uiout, "stop-reason", stop_reason);
2097 if (stopping_tracepoint != -1)
2098 ui_out_field_int (uiout, "stopping-tracepoint",
2099 stopping_tracepoint);
2100 if (ts->stop_reason == tracepoint_error)
2101 ui_out_field_string (uiout, "error-description",
2107 if (ts->traceframe_count != -1)
2108 ui_out_field_int (uiout, "frames", ts->traceframe_count);
2109 if (ts->traceframes_created != -1)
2110 ui_out_field_int (uiout, "frames-created", ts->traceframes_created);
2111 if (ts->buffer_size != -1)
2112 ui_out_field_int (uiout, "buffer-size", ts->buffer_size);
2113 if (ts->buffer_free != -1)
2114 ui_out_field_int (uiout, "buffer-free", ts->buffer_free);
2116 ui_out_field_int (uiout, "disconnected", ts->disconnected_tracing);
2117 ui_out_field_int (uiout, "circular", ts->circular_buffer);
2119 ui_out_field_string (uiout, "user-name", ts->user_name);
2120 ui_out_field_string (uiout, "notes", ts->notes);
2125 xsnprintf (buf, sizeof buf, "%ld.%06ld",
2126 (long int) ts->start_time / 1000000,
2127 (long int) ts->start_time % 1000000);
2128 ui_out_field_string (uiout, "start-time", buf);
2129 xsnprintf (buf, sizeof buf, "%ld.%06ld",
2130 (long int) ts->stop_time / 1000000,
2131 (long int) ts->stop_time % 1000000);
2132 ui_out_field_string (uiout, "stop-time", buf);
2136 /* This function handles the details of what to do about an ongoing
2137 tracing run if the user has asked to detach or otherwise disconnect
2140 disconnect_tracing (int from_tty)
2142 /* It can happen that the target that was tracing went away on its
2143 own, and we didn't notice. Get a status update, and if the
2144 current target doesn't even do tracing, then assume it's not
2146 if (target_get_trace_status (current_trace_status ()) < 0)
2147 current_trace_status ()->running = 0;
2149 /* If running interactively, give the user the option to cancel and
2150 then decide what to do differently with the run. Scripts are
2151 just going to disconnect and let the target deal with it,
2152 according to how it's been instructed previously via
2153 disconnected-tracing. */
2154 if (current_trace_status ()->running && from_tty)
2156 process_tracepoint_on_disconnect ();
2158 if (current_trace_status ()->disconnected_tracing)
2160 if (!query (_("Trace is running and will "
2161 "continue after detach; detach anyway? ")))
2162 error (_("Not confirmed."));
2166 if (!query (_("Trace is running but will "
2167 "stop on detach; detach anyway? ")))
2168 error (_("Not confirmed."));
2172 /* Also we want to be out of tfind mode, otherwise things can get
2173 confusing upon reconnection. Just use these calls instead of
2174 full tfind_1 behavior because we're in the middle of detaching,
2175 and there's no point to updating current stack frame etc. */
2176 set_current_traceframe (-1);
2177 set_traceframe_context (NULL);
2180 /* Worker function for the various flavors of the tfind command. */
2182 tfind_1 (enum trace_find_type type, int num,
2183 ULONGEST addr1, ULONGEST addr2,
2186 int target_frameno = -1, target_tracept = -1;
2187 struct frame_id old_frame_id = null_frame_id;
2188 struct tracepoint *tp;
2189 struct ui_out *uiout = current_uiout;
2191 /* Only try to get the current stack frame if we have a chance of
2192 succeeding. In particular, if we're trying to get a first trace
2193 frame while all threads are running, it's not going to succeed,
2194 so leave it with a default value and let the frame comparison
2195 below (correctly) decide to print out the source location of the
2197 if (!(type == tfind_number && num == -1)
2198 && (has_stack_frames () || traceframe_number >= 0))
2199 old_frame_id = get_frame_id (get_current_frame ());
2201 target_frameno = target_trace_find (type, num, addr1, addr2,
2204 if (type == tfind_number
2206 && target_frameno == -1)
2208 /* We told the target to get out of tfind mode, and it did. */
2210 else if (target_frameno == -1)
2212 /* A request for a non-existent trace frame has failed.
2213 Our response will be different, depending on FROM_TTY:
2215 If FROM_TTY is true, meaning that this command was
2216 typed interactively by the user, then give an error
2217 and DO NOT change the state of traceframe_number etc.
2219 However if FROM_TTY is false, meaning that we're either
2220 in a script, a loop, or a user-defined command, then
2221 DON'T give an error, but DO change the state of
2222 traceframe_number etc. to invalid.
2224 The rationalle is that if you typed the command, you
2225 might just have committed a typo or something, and you'd
2226 like to NOT lose your current debugging state. However
2227 if you're in a user-defined command or especially in a
2228 loop, then you need a way to detect that the command
2229 failed WITHOUT aborting. This allows you to write
2230 scripts that search thru the trace buffer until the end,
2231 and then continue on to do something else. */
2234 error (_("Target failed to find requested trace frame."));
2238 printf_filtered ("End of trace buffer.\n");
2239 #if 0 /* dubious now? */
2240 /* The following will not recurse, since it's
2242 trace_find_command ("-1", from_tty);
2247 tp = get_tracepoint_by_number_on_target (target_tracept);
2249 reinit_frame_cache ();
2250 registers_changed ();
2251 target_dcache_invalidate ();
2252 set_traceframe_num (target_frameno);
2253 clear_traceframe_info ();
2254 set_tracepoint_num (tp ? tp->base.number : target_tracept);
2255 if (target_frameno == -1)
2256 set_traceframe_context (NULL);
2258 set_traceframe_context (get_current_frame ());
2260 if (traceframe_number >= 0)
2262 /* Use different branches for MI and CLI to make CLI messages
2264 if (ui_out_is_mi_like_p (uiout))
2266 ui_out_field_string (uiout, "found", "1");
2267 ui_out_field_int (uiout, "tracepoint", tracepoint_number);
2268 ui_out_field_int (uiout, "traceframe", traceframe_number);
2272 printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"),
2273 traceframe_number, tracepoint_number);
2278 if (ui_out_is_mi_like_p (uiout))
2279 ui_out_field_string (uiout, "found", "0");
2280 else if (type == tfind_number && num == -1)
2281 printf_unfiltered (_("No longer looking at any trace frame\n"));
2282 else /* This case may never occur, check. */
2283 printf_unfiltered (_("No trace frame found\n"));
2286 /* If we're in nonstop mode and getting out of looking at trace
2287 frames, there won't be any current frame to go back to and
2290 && (has_stack_frames () || traceframe_number >= 0))
2292 enum print_what print_what;
2294 /* NOTE: in imitation of the step command, try to determine
2295 whether we have made a transition from one function to
2296 another. If so, we'll print the "stack frame" (ie. the new
2297 function and it's arguments) -- otherwise we'll just show the
2300 if (frame_id_eq (old_frame_id,
2301 get_frame_id (get_current_frame ())))
2302 print_what = SRC_LINE;
2304 print_what = SRC_AND_LOC;
2306 print_stack_frame (get_selected_frame (NULL), 1, print_what);
2311 /* trace_find_command takes a trace frame number n,
2312 sends "QTFrame:<n>" to the target,
2313 and accepts a reply that may contain several optional pieces
2314 of information: a frame number, a tracepoint number, and an
2315 indication of whether this is a trap frame or a stepping frame.
2317 The minimal response is just "OK" (which indicates that the
2318 target does not give us a frame number or a tracepoint number).
2319 Instead of that, the target may send us a string containing
2321 F<hexnum> (gives the selected frame number)
2322 T<hexnum> (gives the selected tracepoint number)
2327 trace_find_command (char *args, int from_tty)
2328 { /* This should only be called with a numeric argument. */
2331 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2332 error (_("May not look at trace frames while trace is running."));
2334 if (args == 0 || *args == 0)
2335 { /* TFIND with no args means find NEXT trace frame. */
2336 if (traceframe_number == -1)
2337 frameno = 0; /* "next" is first one. */
2339 frameno = traceframe_number + 1;
2341 else if (0 == strcmp (args, "-"))
2343 if (traceframe_number == -1)
2344 error (_("not debugging trace buffer"));
2345 else if (from_tty && traceframe_number == 0)
2346 error (_("already at start of trace buffer"));
2348 frameno = traceframe_number - 1;
2350 /* A hack to work around eval's need for fp to have been collected. */
2351 else if (0 == strcmp (args, "-1"))
2354 frameno = parse_and_eval_long (args);
2357 error (_("invalid input (%d is less than zero)"), frameno);
2359 tfind_1 (tfind_number, frameno, 0, 0, from_tty);
2364 trace_find_end_command (char *args, int from_tty)
2366 trace_find_command ("-1", from_tty);
2371 trace_find_none_command (char *args, int from_tty)
2373 trace_find_command ("-1", from_tty);
2378 trace_find_start_command (char *args, int from_tty)
2380 trace_find_command ("0", from_tty);
2383 /* tfind pc command */
2385 trace_find_pc_command (char *args, int from_tty)
2389 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2390 error (_("May not look at trace frames while trace is running."));
2392 if (args == 0 || *args == 0)
2393 pc = regcache_read_pc (get_current_regcache ());
2395 pc = parse_and_eval_address (args);
2397 tfind_1 (tfind_pc, 0, pc, 0, from_tty);
2400 /* tfind tracepoint command */
2402 trace_find_tracepoint_command (char *args, int from_tty)
2405 struct tracepoint *tp;
2407 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2408 error (_("May not look at trace frames while trace is running."));
2410 if (args == 0 || *args == 0)
2412 if (tracepoint_number == -1)
2413 error (_("No current tracepoint -- please supply an argument."));
2415 tdp = tracepoint_number; /* Default is current TDP. */
2418 tdp = parse_and_eval_long (args);
2420 /* If we have the tracepoint on hand, use the number that the
2421 target knows about (which may be different if we disconnected
2422 and reconnected). */
2423 tp = get_tracepoint (tdp);
2425 tdp = tp->number_on_target;
2427 tfind_1 (tfind_tp, tdp, 0, 0, from_tty);
2430 /* TFIND LINE command:
2432 This command will take a sourceline for argument, just like BREAK
2433 or TRACE (ie. anything that "decode_line_1" can handle).
2435 With no argument, this command will find the next trace frame
2436 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2439 trace_find_line_command (char *args, int from_tty)
2441 static CORE_ADDR start_pc, end_pc;
2442 struct symtabs_and_lines sals;
2443 struct symtab_and_line sal;
2444 struct cleanup *old_chain;
2446 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2447 error (_("May not look at trace frames while trace is running."));
2449 if (args == 0 || *args == 0)
2451 sal = find_pc_line (get_frame_pc (get_current_frame ()), 0);
2453 sals.sals = (struct symtab_and_line *)
2454 xmalloc (sizeof (struct symtab_and_line));
2459 sals = decode_line_spec (args, DECODE_LINE_FUNFIRSTLINE);
2463 old_chain = make_cleanup (xfree, sals.sals);
2464 if (sal.symtab == 0)
2465 error (_("No line number information available."));
2467 if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc))
2469 if (start_pc == end_pc)
2471 printf_filtered ("Line %d of \"%s\"",
2472 sal.line, sal.symtab->filename);
2474 printf_filtered (" is at address ");
2475 print_address (get_current_arch (), start_pc, gdb_stdout);
2477 printf_filtered (" but contains no code.\n");
2478 sal = find_pc_line (start_pc, 0);
2480 && find_line_pc_range (sal, &start_pc, &end_pc)
2481 && start_pc != end_pc)
2482 printf_filtered ("Attempting to find line %d instead.\n",
2485 error (_("Cannot find a good line."));
2489 /* Is there any case in which we get here, and have an address
2490 which the user would want to see? If we have debugging
2491 symbols and no line numbers? */
2492 error (_("Line number %d is out of range for \"%s\"."),
2493 sal.line, sal.symtab->filename);
2495 /* Find within range of stated line. */
2497 tfind_1 (tfind_range, 0, start_pc, end_pc - 1, from_tty);
2499 tfind_1 (tfind_outside, 0, start_pc, end_pc - 1, from_tty);
2500 do_cleanups (old_chain);
2503 /* tfind range command */
2505 trace_find_range_command (char *args, int from_tty)
2507 static CORE_ADDR start, stop;
2510 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2511 error (_("May not look at trace frames while trace is running."));
2513 if (args == 0 || *args == 0)
2514 { /* XXX FIXME: what should default behavior be? */
2515 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2519 if (0 != (tmp = strchr (args, ',')))
2521 *tmp++ = '\0'; /* Terminate start address. */
2522 while (isspace ((int) *tmp))
2524 start = parse_and_eval_address (args);
2525 stop = parse_and_eval_address (tmp);
2528 { /* No explicit end address? */
2529 start = parse_and_eval_address (args);
2530 stop = start + 1; /* ??? */
2533 tfind_1 (tfind_range, 0, start, stop, from_tty);
2536 /* tfind outside command */
2538 trace_find_outside_command (char *args, int from_tty)
2540 CORE_ADDR start, stop;
2543 if (current_trace_status ()->running && !current_trace_status ()->from_file)
2544 error (_("May not look at trace frames while trace is running."));
2546 if (args == 0 || *args == 0)
2547 { /* XXX FIXME: what should default behavior be? */
2548 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2552 if (0 != (tmp = strchr (args, ',')))
2554 *tmp++ = '\0'; /* Terminate start address. */
2555 while (isspace ((int) *tmp))
2557 start = parse_and_eval_address (args);
2558 stop = parse_and_eval_address (tmp);
2561 { /* No explicit end address? */
2562 start = parse_and_eval_address (args);
2563 stop = start + 1; /* ??? */
2566 tfind_1 (tfind_outside, 0, start, stop, from_tty);
2569 /* info scope command: list the locals for a scope. */
2571 scope_info (char *args, int from_tty)
2573 struct symtabs_and_lines sals;
2575 struct minimal_symbol *msym;
2576 struct block *block;
2577 char *symname, *save_args = args;
2578 struct dict_iterator iter;
2580 struct gdbarch *gdbarch;
2583 if (args == 0 || *args == 0)
2584 error (_("requires an argument (function, "
2585 "line or *addr) to define a scope"));
2587 sals = decode_line_1 (&args, DECODE_LINE_FUNFIRSTLINE, NULL, 0);
2588 if (sals.nelts == 0)
2589 return; /* Presumably decode_line_1 has already warned. */
2591 /* Resolve line numbers to PC. */
2592 resolve_sal_pc (&sals.sals[0]);
2593 block = block_for_pc (sals.sals[0].pc);
2597 QUIT; /* Allow user to bail out with ^C. */
2598 ALL_BLOCK_SYMBOLS (block, iter, sym)
2600 QUIT; /* Allow user to bail out with ^C. */
2602 printf_filtered ("Scope for %s:\n", save_args);
2605 symname = SYMBOL_PRINT_NAME (sym);
2606 if (symname == NULL || *symname == '\0')
2607 continue; /* Probably botched, certainly useless. */
2609 gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile);
2611 printf_filtered ("Symbol %s is ", symname);
2612 switch (SYMBOL_CLASS (sym))
2615 case LOC_UNDEF: /* Messed up symbol? */
2616 printf_filtered ("a bogus symbol, class %d.\n",
2617 SYMBOL_CLASS (sym));
2618 count--; /* Don't count this one. */
2621 printf_filtered ("a constant with value %ld (0x%lx)",
2622 SYMBOL_VALUE (sym), SYMBOL_VALUE (sym));
2624 case LOC_CONST_BYTES:
2625 printf_filtered ("constant bytes: ");
2626 if (SYMBOL_TYPE (sym))
2627 for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++)
2628 fprintf_filtered (gdb_stdout, " %02x",
2629 (unsigned) SYMBOL_VALUE_BYTES (sym)[j]);
2632 printf_filtered ("in static storage at address ");
2633 printf_filtered ("%s", paddress (gdbarch,
2634 SYMBOL_VALUE_ADDRESS (sym)));
2637 /* GDBARCH is the architecture associated with the objfile
2638 the symbol is defined in; the target architecture may be
2639 different, and may provide additional registers. However,
2640 we do not know the target architecture at this point.
2641 We assume the objfile architecture will contain all the
2642 standard registers that occur in debug info in that
2644 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym,
2647 if (SYMBOL_IS_ARGUMENT (sym))
2648 printf_filtered ("an argument in register $%s",
2649 gdbarch_register_name (gdbarch, regno));
2651 printf_filtered ("a local variable in register $%s",
2652 gdbarch_register_name (gdbarch, regno));
2655 printf_filtered ("an argument at stack/frame offset %ld",
2656 SYMBOL_VALUE (sym));
2659 printf_filtered ("a local variable at frame offset %ld",
2660 SYMBOL_VALUE (sym));
2663 printf_filtered ("a reference argument at offset %ld",
2664 SYMBOL_VALUE (sym));
2666 case LOC_REGPARM_ADDR:
2667 /* Note comment at LOC_REGISTER. */
2668 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym,
2670 printf_filtered ("the address of an argument, in register $%s",
2671 gdbarch_register_name (gdbarch, regno));
2674 printf_filtered ("a typedef.\n");
2677 printf_filtered ("a label at address ");
2678 printf_filtered ("%s", paddress (gdbarch,
2679 SYMBOL_VALUE_ADDRESS (sym)));
2682 printf_filtered ("a function at address ");
2683 printf_filtered ("%s",
2684 paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (sym))));
2686 case LOC_UNRESOLVED:
2687 msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym),
2690 printf_filtered ("Unresolved Static");
2693 printf_filtered ("static storage at address ");
2694 printf_filtered ("%s",
2695 paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msym)));
2698 case LOC_OPTIMIZED_OUT:
2699 printf_filtered ("optimized out.\n");
2702 SYMBOL_COMPUTED_OPS (sym)->describe_location (sym,
2703 BLOCK_START (block),
2707 if (SYMBOL_TYPE (sym))
2708 printf_filtered (", length %d.\n",
2709 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))));
2711 if (BLOCK_FUNCTION (block))
2714 block = BLOCK_SUPERBLOCK (block);
2717 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2721 /* worker function (cleanup) */
2723 replace_comma (void *data)
2730 /* Helper for trace_dump_command. Dump the action list starting at
2731 ACTION. STEPPING_ACTIONS is true if we're iterating over the
2732 actions of the body of a while-stepping action. STEPPING_FRAME is
2733 set if the current traceframe was determined to be a while-stepping
2737 trace_dump_actions (struct command_line *action,
2738 int stepping_actions, int stepping_frame,
2741 char *action_exp, *next_comma;
2743 for (; action != NULL; action = action->next)
2745 struct cmd_list_element *cmd;
2747 QUIT; /* Allow user to bail out with ^C. */
2748 action_exp = action->line;
2749 while (isspace ((int) *action_exp))
2752 /* The collection actions to be done while stepping are
2753 bracketed by the commands "while-stepping" and "end". */
2755 if (*action_exp == '#') /* comment line */
2758 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
2760 error (_("Bad action list item: %s"), action_exp);
2762 if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand))
2766 for (i = 0; i < action->body_count; ++i)
2767 trace_dump_actions (action->body_list[i],
2768 1, stepping_frame, from_tty);
2770 else if (cmd_cfunc_eq (cmd, collect_pseudocommand))
2772 /* Display the collected data.
2773 For the trap frame, display only what was collected at
2774 the trap. Likewise for stepping frames, display only
2775 what was collected while stepping. This means that the
2776 two boolean variables, STEPPING_FRAME and
2777 STEPPING_ACTIONS should be equal. */
2778 if (stepping_frame == stepping_actions)
2780 if (*action_exp == '/')
2781 action_exp = decode_agent_options (action_exp);
2784 { /* Repeat over a comma-separated list. */
2785 QUIT; /* Allow user to bail out with ^C. */
2786 if (*action_exp == ',')
2788 while (isspace ((int) *action_exp))
2791 next_comma = strchr (action_exp, ',');
2793 if (0 == strncasecmp (action_exp, "$reg", 4))
2794 registers_info (NULL, from_tty);
2795 else if (0 == strncasecmp (action_exp, "$_ret", 5))
2797 else if (0 == strncasecmp (action_exp, "$loc", 4))
2798 locals_info (NULL, from_tty);
2799 else if (0 == strncasecmp (action_exp, "$arg", 4))
2800 args_info (NULL, from_tty);
2805 make_cleanup (replace_comma, next_comma);
2808 printf_filtered ("%s = ", action_exp);
2809 output_command (action_exp, from_tty);
2810 printf_filtered ("\n");
2814 action_exp = next_comma;
2816 while (action_exp && *action_exp == ',');
2822 /* The tdump command. */
2825 trace_dump_command (char *args, int from_tty)
2827 struct regcache *regcache;
2828 struct tracepoint *t;
2829 int stepping_frame = 0;
2830 struct bp_location *loc;
2831 char *line, *default_collect_line = NULL;
2832 struct command_line *actions, *default_collect_action = NULL;
2833 struct cleanup *old_chain = NULL;
2835 if (tracepoint_number == -1)
2837 warning (_("No current trace frame."));
2841 t = get_tracepoint (tracepoint_number);
2844 error (_("No known tracepoint matches 'current' tracepoint #%d."),
2847 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2848 tracepoint_number, traceframe_number);
2850 /* The current frame is a trap frame if the frame PC is equal
2851 to the tracepoint PC. If not, then the current frame was
2852 collected during single-stepping. */
2854 regcache = get_current_regcache ();
2856 /* If the traceframe's address matches any of the tracepoint's
2857 locations, assume it is a direct hit rather than a while-stepping
2858 frame. (FIXME this is not reliable, should record each frame's
2861 for (loc = t->base.loc; loc; loc = loc->next)
2862 if (loc->address == regcache_read_pc (regcache))
2865 actions = breakpoint_commands (&t->base);
2867 /* If there is a default-collect list, make up a collect command,
2868 prepend to the tracepoint's commands, and pass the whole mess to
2869 the trace dump scanner. We need to validate because
2870 default-collect might have been junked since the trace run. */
2871 if (*default_collect)
2873 default_collect_line = xstrprintf ("collect %s", default_collect);
2874 old_chain = make_cleanup (xfree, default_collect_line);
2875 line = default_collect_line;
2876 validate_actionline (&line, &t->base);
2877 default_collect_action = xmalloc (sizeof (struct command_line));
2878 make_cleanup (xfree, default_collect_action);
2879 default_collect_action->next = actions;
2880 default_collect_action->line = line;
2881 actions = default_collect_action;
2884 trace_dump_actions (actions, 0, stepping_frame, from_tty);
2886 if (*default_collect)
2887 do_cleanups (old_chain);
2890 /* Encode a piece of a tracepoint's source-level definition in a form
2891 that is suitable for both protocol and saving in files. */
2892 /* This version does not do multiple encodes for long strings; it should
2893 return an offset to the next piece to encode. FIXME */
2896 encode_source_string (int tpnum, ULONGEST addr,
2897 char *srctype, char *src, char *buf, int buf_size)
2899 if (80 + strlen (srctype) > buf_size)
2900 error (_("Buffer too small for source encoding"));
2901 sprintf (buf, "%x:%s:%s:%x:%x:",
2902 tpnum, phex_nz (addr, sizeof (addr)),
2903 srctype, 0, (int) strlen (src));
2904 if (strlen (buf) + strlen (src) * 2 >= buf_size)
2905 error (_("Source string too long for buffer"));
2906 bin2hex (src, buf + strlen (buf), 0);
2910 extern int trace_regblock_size;
2912 /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is
2913 non-zero, the save is performed on the target, otherwise GDB obtains all
2914 trace data and saves it locally. */
2917 trace_save (const char *filename, int target_does_save)
2919 struct cleanup *cleanup;
2921 struct trace_status *ts = current_trace_status ();
2924 struct uploaded_tp *uploaded_tps = NULL, *utp;
2925 struct uploaded_tsv *uploaded_tsvs = NULL, *utsv;
2929 ULONGEST offset = 0;
2930 #define MAX_TRACE_UPLOAD 2000
2931 gdb_byte buf[MAX_TRACE_UPLOAD];
2934 /* If the target is to save the data to a file on its own, then just
2935 send the command and be done with it. */
2936 if (target_does_save)
2938 err = target_save_trace_data (filename);
2940 error (_("Target failed to save trace data to '%s'."),
2945 /* Get the trace status first before opening the file, so if the
2946 target is losing, we can get out without touching files. */
2947 status = target_get_trace_status (ts);
2949 pathname = tilde_expand (filename);
2950 cleanup = make_cleanup (xfree, pathname);
2952 fp = fopen (pathname, "wb");
2954 error (_("Unable to open file '%s' for saving trace data (%s)"),
2955 filename, safe_strerror (errno));
2956 make_cleanup_fclose (fp);
2958 /* Write a file header, with a high-bit-set char to indicate a
2959 binary file, plus a hint as what this file is, and a version
2960 number in case of future needs. */
2961 written = fwrite ("\x7fTRACE0\n", 8, 1, fp);
2963 perror_with_name (pathname);
2965 /* Write descriptive info. */
2967 /* Write out the size of a register block. */
2968 fprintf (fp, "R %x\n", trace_regblock_size);
2970 /* Write out status of the tracing run (aka "tstatus" info). */
2971 fprintf (fp, "status %c;%s",
2972 (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]);
2973 if (ts->stop_reason == tracepoint_error)
2975 char *buf = (char *) alloca (strlen (ts->stop_desc) * 2 + 1);
2977 bin2hex ((gdb_byte *) ts->stop_desc, buf, 0);
2978 fprintf (fp, ":%s", buf);
2980 fprintf (fp, ":%x", ts->stopping_tracepoint);
2981 if (ts->traceframe_count >= 0)
2982 fprintf (fp, ";tframes:%x", ts->traceframe_count);
2983 if (ts->traceframes_created >= 0)
2984 fprintf (fp, ";tcreated:%x", ts->traceframes_created);
2985 if (ts->buffer_free >= 0)
2986 fprintf (fp, ";tfree:%x", ts->buffer_free);
2987 if (ts->buffer_size >= 0)
2988 fprintf (fp, ";tsize:%x", ts->buffer_size);
2989 if (ts->disconnected_tracing)
2990 fprintf (fp, ";disconn:%x", ts->disconnected_tracing);
2991 if (ts->circular_buffer)
2992 fprintf (fp, ";circular:%x", ts->circular_buffer);
2995 /* Note that we want to upload tracepoints and save those, rather
2996 than simply writing out the local ones, because the user may have
2997 changed tracepoints in GDB in preparation for a future tracing
2998 run, or maybe just mass-deleted all types of breakpoints as part
2999 of cleaning up. So as not to contaminate the session, leave the
3000 data in its uploaded form, don't make into real tracepoints. */
3002 /* Get trace state variables first, they may be checked when parsing
3003 uploaded commands. */
3005 target_upload_trace_state_variables (&uploaded_tsvs);
3007 for (utsv = uploaded_tsvs; utsv; utsv = utsv->next)
3013 buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1);
3014 bin2hex ((gdb_byte *) (utsv->name), buf, 0);
3017 fprintf (fp, "tsv %x:%s:%x:%s\n",
3018 utsv->number, phex_nz (utsv->initial_value, 8),
3019 utsv->builtin, buf);
3025 free_uploaded_tsvs (&uploaded_tsvs);
3027 target_upload_tracepoints (&uploaded_tps);
3029 for (utp = uploaded_tps; utp; utp = utp->next)
3030 target_get_tracepoint_status (NULL, utp);
3032 for (utp = uploaded_tps; utp; utp = utp->next)
3034 fprintf (fp, "tp T%x:%s:%c:%x:%x",
3035 utp->number, phex_nz (utp->addr, sizeof (utp->addr)),
3036 (utp->enabled ? 'E' : 'D'), utp->step, utp->pass);
3037 if (utp->type == bp_fast_tracepoint)
3038 fprintf (fp, ":F%x", utp->orig_size);
3040 fprintf (fp, ":X%x,%s", (unsigned int) strlen (utp->cond) / 2,
3043 for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a)
3044 fprintf (fp, "tp A%x:%s:%s\n",
3045 utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
3046 for (a = 0; VEC_iterate (char_ptr, utp->step_actions, a, act); ++a)
3047 fprintf (fp, "tp S%x:%s:%s\n",
3048 utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act);
3051 encode_source_string (utp->number, utp->addr,
3052 "at", utp->at_string, buf, MAX_TRACE_UPLOAD);
3053 fprintf (fp, "tp Z%s\n", buf);
3055 if (utp->cond_string)
3057 encode_source_string (utp->number, utp->addr,
3058 "cond", utp->cond_string,
3059 buf, MAX_TRACE_UPLOAD);
3060 fprintf (fp, "tp Z%s\n", buf);
3062 for (a = 0; VEC_iterate (char_ptr, utp->cmd_strings, a, act); ++a)
3064 encode_source_string (utp->number, utp->addr, "cmd", act,
3065 buf, MAX_TRACE_UPLOAD);
3066 fprintf (fp, "tp Z%s\n", buf);
3068 fprintf (fp, "tp V%x:%s:%x:%s\n",
3069 utp->number, phex_nz (utp->addr, sizeof (utp->addr)),
3071 phex_nz (utp->traceframe_usage,
3072 sizeof (utp->traceframe_usage)));
3075 free_uploaded_tps (&uploaded_tps);
3077 /* Mark the end of the definition section. */
3080 /* Get and write the trace data proper. We ask for big blocks, in
3081 the hopes of efficiency, but will take less if the target has
3082 packet size limitations or some such. */
3085 gotten = target_get_raw_trace_data (buf, offset, MAX_TRACE_UPLOAD);
3087 error (_("Failure to get requested trace buffer data"));
3088 /* No more data is forthcoming, we're done. */
3091 written = fwrite (buf, gotten, 1, fp);
3093 perror_with_name (pathname);
3097 /* Mark the end of trace data. (We know that gotten is 0 at this point.) */
3098 written = fwrite (&gotten, 4, 1, fp);
3100 perror_with_name (pathname);
3102 do_cleanups (cleanup);
3106 trace_save_command (char *args, int from_tty)
3108 int target_does_save = 0;
3110 char *filename = NULL;
3111 struct cleanup *back_to;
3114 error_no_arg (_("file in which to save trace data"));
3116 argv = gdb_buildargv (args);
3117 back_to = make_cleanup_freeargv (argv);
3119 for (; *argv; ++argv)
3121 if (strcmp (*argv, "-r") == 0)
3122 target_does_save = 1;
3123 else if (**argv == '-')
3124 error (_("unknown option `%s'"), *argv);
3130 error_no_arg (_("file in which to save trace data"));
3132 trace_save (filename, target_does_save);
3135 printf_filtered (_("Trace data saved to file '%s'.\n"), filename);
3137 do_cleanups (back_to);
3140 /* Tell the target what to do with an ongoing tracing run if GDB
3141 disconnects for some reason. */
3144 set_disconnected_tracing (char *args, int from_tty,
3145 struct cmd_list_element *c)
3147 target_set_disconnected_tracing (disconnected_tracing);
3151 set_circular_trace_buffer (char *args, int from_tty,
3152 struct cmd_list_element *c)
3154 target_set_circular_trace_buffer (circular_trace_buffer);
3158 set_trace_user (char *args, int from_tty,
3159 struct cmd_list_element *c)
3163 ret = target_set_trace_notes (trace_user, NULL, NULL);
3166 warning ("Target does not support trace notes, user ignored");
3170 set_trace_notes (char *args, int from_tty,
3171 struct cmd_list_element *c)
3175 ret = target_set_trace_notes (NULL, trace_notes, NULL);
3178 warning ("Target does not support trace notes, note ignored");
3182 set_trace_stop_notes (char *args, int from_tty,
3183 struct cmd_list_element *c)
3187 ret = target_set_trace_notes (NULL, NULL, trace_stop_notes);
3190 warning ("Target does not support trace notes, stop note ignored");
3193 /* Convert the memory pointed to by mem into hex, placing result in buf.
3194 * Return a pointer to the last char put in buf (null)
3195 * "stolen" from sparc-stub.c
3198 static const char hexchars[] = "0123456789abcdef";
3201 mem2hex (gdb_byte *mem, char *buf, int count)
3209 *buf++ = hexchars[ch >> 4];
3210 *buf++ = hexchars[ch & 0xf];
3219 get_traceframe_number (void)
3221 return traceframe_number;
3224 /* Make the traceframe NUM be the current trace frame. Does nothing
3225 if NUM is already current. */
3228 set_current_traceframe (int num)
3232 if (traceframe_number == num)
3234 /* Nothing to do. */
3238 newnum = target_trace_find (tfind_number, num, 0, 0, NULL);
3241 warning (_("could not change traceframe"));
3243 traceframe_number = newnum;
3245 /* Changing the traceframe changes our view of registers and of the
3247 registers_changed ();
3249 clear_traceframe_info ();
3252 /* Make the traceframe NUM be the current trace frame, and do nothing
3256 set_traceframe_number (int num)
3258 traceframe_number = num;
3261 /* A cleanup used when switching away and back from tfind mode. */
3263 struct current_traceframe_cleanup
3265 /* The traceframe we were inspecting. */
3266 int traceframe_number;
3270 do_restore_current_traceframe_cleanup (void *arg)
3272 struct current_traceframe_cleanup *old = arg;
3274 set_current_traceframe (old->traceframe_number);
3278 restore_current_traceframe_cleanup_dtor (void *arg)
3280 struct current_traceframe_cleanup *old = arg;
3286 make_cleanup_restore_current_traceframe (void)
3288 struct current_traceframe_cleanup *old;
3290 old = xmalloc (sizeof (struct current_traceframe_cleanup));
3291 old->traceframe_number = traceframe_number;
3293 return make_cleanup_dtor (do_restore_current_traceframe_cleanup, old,
3294 restore_current_traceframe_cleanup_dtor);
3298 make_cleanup_restore_traceframe_number (void)
3300 return make_cleanup_restore_integer (&traceframe_number);
3303 /* Given a number and address, return an uploaded tracepoint with that
3304 number, creating if necessary. */
3306 struct uploaded_tp *
3307 get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp)
3309 struct uploaded_tp *utp;
3311 for (utp = *utpp; utp; utp = utp->next)
3312 if (utp->number == num && utp->addr == addr)
3314 utp = (struct uploaded_tp *) xmalloc (sizeof (struct uploaded_tp));
3315 memset (utp, 0, sizeof (struct uploaded_tp));
3318 utp->actions = NULL;
3319 utp->step_actions = NULL;
3320 utp->cmd_strings = NULL;
3327 free_uploaded_tps (struct uploaded_tp **utpp)
3329 struct uploaded_tp *next_one;
3333 next_one = (*utpp)->next;
3339 /* Given a number and address, return an uploaded tracepoint with that
3340 number, creating if necessary. */
3342 struct uploaded_tsv *
3343 get_uploaded_tsv (int num, struct uploaded_tsv **utsvp)
3345 struct uploaded_tsv *utsv;
3347 for (utsv = *utsvp; utsv; utsv = utsv->next)
3348 if (utsv->number == num)
3350 utsv = (struct uploaded_tsv *) xmalloc (sizeof (struct uploaded_tsv));
3351 memset (utsv, 0, sizeof (struct uploaded_tsv));
3353 utsv->next = *utsvp;
3359 free_uploaded_tsvs (struct uploaded_tsv **utsvp)
3361 struct uploaded_tsv *next_one;
3365 next_one = (*utsvp)->next;
3371 /* FIXME this function is heuristic and will miss the cases where the
3372 conditional is semantically identical but differs in whitespace,
3373 such as "x == 0" vs "x==0". */
3376 cond_string_is_same (char *str1, char *str2)
3378 if (str1 == NULL || str2 == NULL)
3379 return (str1 == str2);
3381 return (strcmp (str1, str2) == 0);
3384 /* Look for an existing tracepoint that seems similar enough to the
3385 uploaded one. Enablement isn't compared, because the user can
3386 toggle that freely, and may have done so in anticipation of the
3387 next trace run. Return the location of matched tracepoint. */
3389 struct bp_location *
3390 find_matching_tracepoint_location (struct uploaded_tp *utp)
3392 VEC(breakpoint_p) *tp_vec = all_tracepoints ();
3394 struct breakpoint *b;
3395 struct bp_location *loc;
3397 for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++)
3399 struct tracepoint *t = (struct tracepoint *) b;
3401 if (b->type == utp->type
3402 && t->step_count == utp->step
3403 && t->pass_count == utp->pass
3404 && cond_string_is_same (t->base.cond_string, utp->cond_string)
3405 /* FIXME also test actions. */
3408 /* Scan the locations for an address match. */
3409 for (loc = b->loc; loc; loc = loc->next)
3411 if (loc->address == utp->addr)
3419 /* Given a list of tracepoints uploaded from a target, attempt to
3420 match them up with existing tracepoints, and create new ones if not
3424 merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps)
3426 struct uploaded_tp *utp;
3428 /* Look for GDB tracepoints that match up with our uploaded versions. */
3429 for (utp = *uploaded_tps; utp; utp = utp->next)
3431 struct bp_location *loc;
3432 struct tracepoint *t;
3434 loc = find_matching_tracepoint_location (utp);
3437 /* Mark this location as already inserted. */
3439 t = (struct tracepoint *) loc->owner;
3440 printf_filtered (_("Assuming tracepoint %d is same "
3441 "as target's tracepoint %d at %s.\n"),
3442 loc->owner->number, utp->number,
3443 paddress (loc->gdbarch, utp->addr));
3447 t = create_tracepoint_from_upload (utp);
3449 printf_filtered (_("Created tracepoint %d for "
3450 "target's tracepoint %d at %s.\n"),
3451 t->base.number, utp->number,
3452 paddress (get_current_arch (), utp->addr));
3454 printf_filtered (_("Failed to create tracepoint for target's "
3455 "tracepoint %d at %s, skipping it.\n"),
3457 paddress (get_current_arch (), utp->addr));
3459 /* Whether found or created, record the number used by the
3460 target, to help with mapping target tracepoints back to their
3461 counterparts here. */
3463 t->number_on_target = utp->number;
3466 free_uploaded_tps (uploaded_tps);
3469 /* Trace state variables don't have much to identify them beyond their
3470 name, so just use that to detect matches. */
3472 struct trace_state_variable *
3473 find_matching_tsv (struct uploaded_tsv *utsv)
3478 return find_trace_state_variable (utsv->name);
3481 struct trace_state_variable *
3482 create_tsv_from_upload (struct uploaded_tsv *utsv)
3484 const char *namebase;
3487 struct trace_state_variable *tsv;
3491 namebase = utsv->name;
3492 sprintf (buf, "%s", namebase);
3497 sprintf (buf, "%s_%d", namebase, try_num++);
3500 /* Fish for a name that is not in use. */
3501 /* (should check against all internal vars?) */
3502 while (find_trace_state_variable (buf))
3503 sprintf (buf, "%s_%d", namebase, try_num++);
3505 /* We have an available name, create the variable. */
3506 tsv = create_trace_state_variable (buf);
3507 tsv->initial_value = utsv->initial_value;
3508 tsv->builtin = utsv->builtin;
3513 /* Given a list of uploaded trace state variables, try to match them
3514 up with existing variables, or create additional ones. */
3517 merge_uploaded_trace_state_variables (struct uploaded_tsv **uploaded_tsvs)
3520 struct uploaded_tsv *utsv;
3521 struct trace_state_variable *tsv;
3524 /* Most likely some numbers will have to be reassigned as part of
3525 the merge, so clear them all in anticipation. */
3526 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3529 for (utsv = *uploaded_tsvs; utsv; utsv = utsv->next)
3531 tsv = find_matching_tsv (utsv);
3535 printf_filtered (_("Assuming trace state variable $%s "
3536 "is same as target's variable %d.\n"),
3537 tsv->name, utsv->number);
3541 tsv = create_tsv_from_upload (utsv);
3543 printf_filtered (_("Created trace state variable "
3544 "$%s for target's variable %d.\n"),
3545 tsv->name, utsv->number);
3547 /* Give precedence to numberings that come from the target. */
3549 tsv->number = utsv->number;
3552 /* Renumber everything that didn't get a target-assigned number. */
3554 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3555 if (tsv->number > highest)
3556 highest = tsv->number;
3559 for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix)
3560 if (tsv->number == 0)
3561 tsv->number = highest++;
3563 free_uploaded_tsvs (uploaded_tsvs);
3566 /* target tfile command */
3568 struct target_ops tfile_ops;
3570 /* Fill in tfile_ops with its defined operations and properties. */
3572 #define TRACE_HEADER_SIZE 8
3574 char *trace_filename;
3576 off_t trace_frames_offset;
3578 int cur_traceframe_number;
3580 int trace_regblock_size;
3582 static void tfile_interp_line (char *line,
3583 struct uploaded_tp **utpp,
3584 struct uploaded_tsv **utsvp);
3586 /* Read SIZE bytes into READBUF from the trace frame, starting at
3587 TRACE_FD's current position. Note that this call `read'
3588 underneath, hence it advances the file's seek position. Throws an
3589 error if the `read' syscall fails, or less than SIZE bytes are
3593 tfile_read (gdb_byte *readbuf, int size)
3597 gotten = read (trace_fd, readbuf, size);
3599 perror_with_name (trace_filename);
3600 else if (gotten < size)
3601 error (_("Premature end of file while reading trace file"));
3605 tfile_open (char *filename, int from_tty)
3607 volatile struct gdb_exception ex;
3609 struct cleanup *old_chain;
3612 char header[TRACE_HEADER_SIZE];
3613 char linebuf[1000]; /* Should be max remote packet size or so. */
3616 struct trace_status *ts;
3617 struct uploaded_tp *uploaded_tps = NULL;
3618 struct uploaded_tsv *uploaded_tsvs = NULL;
3620 target_preopen (from_tty);
3622 error (_("No trace file specified."));
3624 filename = tilde_expand (filename);
3625 if (!IS_ABSOLUTE_PATH(filename))
3627 temp = concat (current_directory, "/", filename, (char *) NULL);
3632 old_chain = make_cleanup (xfree, filename);
3634 flags = O_BINARY | O_LARGEFILE;
3636 scratch_chan = open (filename, flags, 0);
3637 if (scratch_chan < 0)
3638 perror_with_name (filename);
3640 /* Looks semi-reasonable. Toss the old trace file and work on the new. */
3642 discard_cleanups (old_chain); /* Don't free filename any more. */
3643 unpush_target (&tfile_ops);
3645 trace_filename = xstrdup (filename);
3646 trace_fd = scratch_chan;
3649 /* Read the file header and test for validity. */
3650 tfile_read ((gdb_byte *) &header, TRACE_HEADER_SIZE);
3652 bytes += TRACE_HEADER_SIZE;
3653 if (!(header[0] == 0x7f
3654 && (strncmp (header + 1, "TRACE0\n", 7) == 0)))
3655 error (_("File is not a valid trace file."));
3657 push_target (&tfile_ops);
3659 trace_regblock_size = 0;
3660 ts = current_trace_status ();
3661 /* We know we're working with a file. */
3663 /* Set defaults in case there is no status line. */
3664 ts->running_known = 0;
3665 ts->stop_reason = trace_stop_reason_unknown;
3666 ts->traceframe_count = -1;
3667 ts->buffer_free = 0;
3668 ts->disconnected_tracing = 0;
3669 ts->circular_buffer = 0;
3671 cur_traceframe_number = -1;
3673 TRY_CATCH (ex, RETURN_MASK_ALL)
3675 /* Read through a section of newline-terminated lines that
3676 define things like tracepoints. */
3680 tfile_read (&byte, 1);
3685 /* Empty line marks end of the definition section. */
3690 tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs);
3693 linebuf[i++] = byte;
3695 error (_("Excessively long lines in trace file"));
3698 /* Record the starting offset of the binary trace data. */
3699 trace_frames_offset = bytes;
3701 /* If we don't have a blocksize, we can't interpret the
3703 if (trace_regblock_size == 0)
3704 error (_("No register block size recorded in trace file"));
3708 /* Pop the partially set up target. */
3710 throw_exception (ex);
3713 inferior_appeared (current_inferior (), TFILE_PID);
3714 inferior_ptid = pid_to_ptid (TFILE_PID);
3715 add_thread_silent (inferior_ptid);
3717 if (ts->traceframe_count <= 0)
3718 warning (_("No traceframes present in this file."));
3720 /* Add the file's tracepoints and variables into the current mix. */
3722 /* Get trace state variables first, they may be checked when parsing
3723 uploaded commands. */
3724 merge_uploaded_trace_state_variables (&uploaded_tsvs);
3726 merge_uploaded_tracepoints (&uploaded_tps);
3728 post_create_inferior (&tfile_ops, from_tty);
3731 /* Interpret the given line from the definitions part of the trace
3735 tfile_interp_line (char *line,
3736 struct uploaded_tp **utpp, struct uploaded_tsv **utsvp)
3740 if (strncmp (p, "R ", strlen ("R ")) == 0)
3743 trace_regblock_size = strtol (p, &p, 16);
3745 else if (strncmp (p, "status ", strlen ("status ")) == 0)
3747 p += strlen ("status ");
3748 parse_trace_status (p, current_trace_status ());
3750 else if (strncmp (p, "tp ", strlen ("tp ")) == 0)
3752 p += strlen ("tp ");
3753 parse_tracepoint_definition (p, utpp);
3755 else if (strncmp (p, "tsv ", strlen ("tsv ")) == 0)
3757 p += strlen ("tsv ");
3758 parse_tsv_definition (p, utsvp);
3761 warning (_("Ignoring trace file definition \"%s\""), line);
3764 /* Parse the part of trace status syntax that is shared between
3765 the remote protocol and the trace file reader. */
3768 parse_trace_status (char *line, struct trace_status *ts)
3770 char *p = line, *p1, *p2, *p3, *p_temp;
3774 ts->running_known = 1;
3775 ts->running = (*p++ == '1');
3776 ts->stop_reason = trace_stop_reason_unknown;
3777 xfree (ts->stop_desc);
3778 ts->stop_desc = NULL;
3779 ts->traceframe_count = -1;
3780 ts->traceframes_created = -1;
3781 ts->buffer_free = -1;
3782 ts->buffer_size = -1;
3783 ts->disconnected_tracing = 0;
3784 ts->circular_buffer = 0;
3785 xfree (ts->user_name);
3786 ts->user_name = NULL;
3789 ts->start_time = ts->stop_time = 0;
3793 p1 = strchr (p, ':');
3795 error (_("Malformed trace status, at %s\n\
3796 Status line: '%s'\n"), p, line);
3797 p3 = strchr (p, ';');
3799 p3 = p + strlen (p);
3800 if (strncmp (p, stop_reason_names[trace_buffer_full], p1 - p) == 0)
3802 p = unpack_varlen_hex (++p1, &val);
3803 ts->stop_reason = trace_buffer_full;
3805 else if (strncmp (p, stop_reason_names[trace_never_run], p1 - p) == 0)
3807 p = unpack_varlen_hex (++p1, &val);
3808 ts->stop_reason = trace_never_run;
3810 else if (strncmp (p, stop_reason_names[tracepoint_passcount],
3813 p = unpack_varlen_hex (++p1, &val);
3814 ts->stop_reason = tracepoint_passcount;
3815 ts->stopping_tracepoint = val;
3817 else if (strncmp (p, stop_reason_names[tstop_command], p1 - p) == 0)
3819 p2 = strchr (++p1, ':');
3827 ts->stop_desc = xmalloc (strlen (line));
3828 end = hex2bin (p1, ts->stop_desc, (p2 - p1) / 2);
3829 ts->stop_desc[end] = '\0';
3832 ts->stop_desc = xstrdup ("");
3834 p = unpack_varlen_hex (++p2, &val);
3835 ts->stop_reason = tstop_command;
3837 else if (strncmp (p, stop_reason_names[trace_disconnected], p1 - p) == 0)
3839 p = unpack_varlen_hex (++p1, &val);
3840 ts->stop_reason = trace_disconnected;
3842 else if (strncmp (p, stop_reason_names[tracepoint_error], p1 - p) == 0)
3844 p2 = strchr (++p1, ':');
3847 ts->stop_desc = xmalloc ((p2 - p1) / 2 + 1);
3848 end = hex2bin (p1, ts->stop_desc, (p2 - p1) / 2);
3849 ts->stop_desc[end] = '\0';
3852 ts->stop_desc = xstrdup ("");
3854 p = unpack_varlen_hex (++p2, &val);
3855 ts->stopping_tracepoint = val;
3856 ts->stop_reason = tracepoint_error;
3858 else if (strncmp (p, "tframes", p1 - p) == 0)
3860 p = unpack_varlen_hex (++p1, &val);
3861 ts->traceframe_count = val;
3863 else if (strncmp (p, "tcreated", p1 - p) == 0)
3865 p = unpack_varlen_hex (++p1, &val);
3866 ts->traceframes_created = val;
3868 else if (strncmp (p, "tfree", p1 - p) == 0)
3870 p = unpack_varlen_hex (++p1, &val);
3871 ts->buffer_free = val;
3873 else if (strncmp (p, "tsize", p1 - p) == 0)
3875 p = unpack_varlen_hex (++p1, &val);
3876 ts->buffer_size = val;
3878 else if (strncmp (p, "disconn", p1 - p) == 0)
3880 p = unpack_varlen_hex (++p1, &val);
3881 ts->disconnected_tracing = val;
3883 else if (strncmp (p, "circular", p1 - p) == 0)
3885 p = unpack_varlen_hex (++p1, &val);
3886 ts->circular_buffer = val;
3888 else if (strncmp (p, "starttime", p1 - p) == 0)
3890 p = unpack_varlen_hex (++p1, &val);
3891 ts->start_time = val;
3893 else if (strncmp (p, "stoptime", p1 - p) == 0)
3895 p = unpack_varlen_hex (++p1, &val);
3896 ts->stop_time = val;
3898 else if (strncmp (p, "username", p1 - p) == 0)
3901 ts->user_name = xmalloc (strlen (p) / 2);
3902 end = hex2bin (p1, ts->user_name, (p3 - p1) / 2);
3903 ts->user_name[end] = '\0';
3906 else if (strncmp (p, "notes", p1 - p) == 0)
3909 ts->notes = xmalloc (strlen (p) / 2);
3910 end = hex2bin (p1, ts->notes, (p3 - p1) / 2);
3911 ts->notes[end] = '\0';
3916 /* Silently skip unknown optional info. */
3917 p_temp = strchr (p1 + 1, ';');
3921 /* Must be at the end. */
3928 parse_tracepoint_status (char *p, struct breakpoint *bp,
3929 struct uploaded_tp *utp)
3932 struct tracepoint *tp = (struct tracepoint *) bp;
3934 p = unpack_varlen_hex (p, &uval);
3936 tp->base.hit_count += uval;
3938 utp->hit_count += uval;
3939 p = unpack_varlen_hex (p + 1, &uval);
3941 tp->traceframe_usage += uval;
3943 utp->traceframe_usage += uval;
3944 /* Ignore any extra, allowing for future extensions. */
3947 /* Given a line of text defining a part of a tracepoint, parse it into
3948 an "uploaded tracepoint". */
3951 parse_tracepoint_definition (char *line, struct uploaded_tp **utpp)
3955 ULONGEST num, addr, step, pass, orig_size, xlen, start;
3958 char *cond, *srctype, *buf;
3959 struct uploaded_tp *utp = NULL;
3962 /* Both tracepoint and action definitions start with the same number
3963 and address sequence. */
3965 p = unpack_varlen_hex (p, &num);
3966 p++; /* skip a colon */
3967 p = unpack_varlen_hex (p, &addr);
3968 p++; /* skip a colon */
3971 enabled = (*p++ == 'E');
3972 p++; /* skip a colon */
3973 p = unpack_varlen_hex (p, &step);
3974 p++; /* skip a colon */
3975 p = unpack_varlen_hex (p, &pass);
3976 type = bp_tracepoint;
3978 /* Thumb through optional fields. */
3981 p++; /* skip a colon */
3984 type = bp_fast_tracepoint;
3986 p = unpack_varlen_hex (p, &orig_size);
3990 type = bp_static_tracepoint;
3996 p = unpack_varlen_hex (p, &xlen);
3997 p++; /* skip a comma */
3998 cond = (char *) xmalloc (2 * xlen + 1);
3999 strncpy (cond, p, 2 * xlen);
4000 cond[2 * xlen] = '\0';
4004 warning (_("Unrecognized char '%c' in tracepoint "
4005 "definition, skipping rest"), *p);
4007 utp = get_uploaded_tp (num, addr, utpp);
4009 utp->enabled = enabled;
4014 else if (piece == 'A')
4016 utp = get_uploaded_tp (num, addr, utpp);
4017 VEC_safe_push (char_ptr, utp->actions, xstrdup (p));
4019 else if (piece == 'S')
4021 utp = get_uploaded_tp (num, addr, utpp);
4022 VEC_safe_push (char_ptr, utp->step_actions, xstrdup (p));
4024 else if (piece == 'Z')
4026 /* Parse a chunk of source form definition. */
4027 utp = get_uploaded_tp (num, addr, utpp);
4029 p = strchr (p, ':');
4030 p++; /* skip a colon */
4031 p = unpack_varlen_hex (p, &start);
4032 p++; /* skip a colon */
4033 p = unpack_varlen_hex (p, &xlen);
4034 p++; /* skip a colon */
4036 buf = alloca (strlen (line));
4038 end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
4041 if (strncmp (srctype, "at:", strlen ("at:")) == 0)
4042 utp->at_string = xstrdup (buf);
4043 else if (strncmp (srctype, "cond:", strlen ("cond:")) == 0)
4044 utp->cond_string = xstrdup (buf);
4045 else if (strncmp (srctype, "cmd:", strlen ("cmd:")) == 0)
4046 VEC_safe_push (char_ptr, utp->cmd_strings, xstrdup (buf));
4048 else if (piece == 'V')
4050 utp = get_uploaded_tp (num, addr, utpp);
4052 parse_tracepoint_status (p, NULL, utp);
4056 /* Don't error out, the target might be sending us optional
4057 info that we don't care about. */
4058 warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece);
4062 /* Convert a textual description of a trace state variable into an
4066 parse_tsv_definition (char *line, struct uploaded_tsv **utsvp)
4069 ULONGEST num, initval, builtin;
4071 struct uploaded_tsv *utsv = NULL;
4073 buf = alloca (strlen (line));
4076 p = unpack_varlen_hex (p, &num);
4077 p++; /* skip a colon */
4078 p = unpack_varlen_hex (p, &initval);
4079 p++; /* skip a colon */
4080 p = unpack_varlen_hex (p, &builtin);
4081 p++; /* skip a colon */
4082 end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2);
4085 utsv = get_uploaded_tsv (num, utsvp);
4086 utsv->initial_value = initval;
4087 utsv->builtin = builtin;
4088 utsv->name = xstrdup (buf);
4091 /* Close the trace file and generally clean up. */
4094 tfile_close (int quitting)
4101 pid = ptid_get_pid (inferior_ptid);
4102 inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */
4103 exit_inferior_silent (pid);
4107 xfree (trace_filename);
4108 trace_filename = NULL;
4112 tfile_files_info (struct target_ops *t)
4114 /* (it would be useful to mention the name of the file). */
4115 printf_filtered ("Looking at a trace file.\n");
4118 /* The trace status for a file is that tracing can never be run. */
4121 tfile_get_trace_status (struct trace_status *ts)
4123 /* Other bits of trace status were collected as part of opening the
4124 trace files, so nothing to do here. */
4130 tfile_get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp)
4132 /* Other bits of trace status were collected as part of opening the
4133 trace files, so nothing to do here. */
4136 /* Given the position of a traceframe in the file, figure out what
4137 address the frame was collected at. This would normally be the
4138 value of a collected PC register, but if not available, we
4142 tfile_get_traceframe_address (off_t tframe_offset)
4146 struct tracepoint *tp;
4147 off_t saved_offset = cur_offset;
4149 /* FIXME dig pc out of collected registers. */
4151 /* Fall back to using tracepoint address. */
4152 lseek (trace_fd, tframe_offset, SEEK_SET);
4153 tfile_read ((gdb_byte *) &tpnum, 2);
4154 tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2,
4158 tp = get_tracepoint_by_number_on_target (tpnum);
4159 /* FIXME this is a poor heuristic if multiple locations. */
4160 if (tp && tp->base.loc)
4161 addr = tp->base.loc->address;
4163 /* Restore our seek position. */
4164 cur_offset = saved_offset;
4165 lseek (trace_fd, cur_offset, SEEK_SET);
4169 /* Make tfile's selected traceframe match GDB's selected
4173 set_tfile_traceframe (void)
4177 if (cur_traceframe_number == get_traceframe_number ())
4180 /* Avoid recursion, tfile_trace_find calls us again. */
4181 cur_traceframe_number = get_traceframe_number ();
4183 newnum = target_trace_find (tfind_number,
4184 get_traceframe_number (), 0, 0, NULL);
4186 /* Should not happen. If it does, all bets are off. */
4187 if (newnum != get_traceframe_number ())
4188 warning (_("could not set tfile's traceframe"));
4191 /* Given a type of search and some parameters, scan the collection of
4192 traceframes in the file looking for a match. When found, return
4193 both the traceframe and tracepoint number, otherwise -1 for
4197 tfile_trace_find (enum trace_find_type type, int num,
4198 ULONGEST addr1, ULONGEST addr2, int *tpp)
4201 int tfnum = 0, found = 0;
4202 unsigned int data_size;
4203 struct tracepoint *tp;
4204 off_t offset, tframe_offset;
4207 /* Lookups other than by absolute frame number depend on the current
4208 trace selected, so make sure it is correct on the tfile end
4210 if (type != tfind_number)
4211 set_tfile_traceframe ();
4219 lseek (trace_fd, trace_frames_offset, SEEK_SET);
4220 offset = trace_frames_offset;
4223 tframe_offset = offset;
4224 tfile_read ((gdb_byte *) &tpnum, 2);
4225 tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2,
4231 tfile_read ((gdb_byte *) &data_size, 4);
4232 data_size = (unsigned int) extract_unsigned_integer
4233 ((gdb_byte *) &data_size, 4,
4234 gdbarch_byte_order (target_gdbarch));
4243 tfaddr = tfile_get_traceframe_address (tframe_offset);
4244 if (tfaddr == addr1)
4248 tp = get_tracepoint (num);
4249 if (tp && tpnum == tp->number_on_target)
4253 tfaddr = tfile_get_traceframe_address (tframe_offset);
4254 if (addr1 <= tfaddr && tfaddr <= addr2)
4258 tfaddr = tfile_get_traceframe_address (tframe_offset);
4259 if (!(addr1 <= tfaddr && tfaddr <= addr2))
4263 internal_error (__FILE__, __LINE__, _("unknown tfind type"));
4269 cur_offset = offset;
4270 cur_data_size = data_size;
4271 cur_traceframe_number = tfnum;
4274 /* Skip past the traceframe's data. */
4275 lseek (trace_fd, data_size, SEEK_CUR);
4276 offset += data_size;
4277 /* Update our own count of traceframes. */
4280 /* Did not find what we were looking for. */
4286 /* Prototype of the callback passed to tframe_walk_blocks. */
4287 typedef int (*walk_blocks_callback_func) (char blocktype, void *data);
4289 /* Callback for traceframe_walk_blocks, used to find a given block
4290 type in a traceframe. */
4293 match_blocktype (char blocktype, void *data)
4295 char *wantedp = data;
4297 if (*wantedp == blocktype)
4303 /* Walk over all traceframe block starting at POS offset from
4304 CUR_OFFSET, and call CALLBACK for each block found, passing in DATA
4305 unmodified. If CALLBACK returns true, this returns the position in
4306 the traceframe where the block is found, relative to the start of
4307 the traceframe (cur_offset). Returns -1 if no callback call
4308 returned true, indicating that all blocks have been walked. */
4311 traceframe_walk_blocks (walk_blocks_callback_func callback,
4312 int pos, void *data)
4314 /* Iterate through a traceframe's blocks, looking for a block of the
4317 lseek (trace_fd, cur_offset + pos, SEEK_SET);
4318 while (pos < cur_data_size)
4320 unsigned short mlen;
4323 tfile_read (&block_type, 1);
4327 if ((*callback) (block_type, data))
4333 lseek (trace_fd, cur_offset + pos + trace_regblock_size, SEEK_SET);
4334 pos += trace_regblock_size;
4337 lseek (trace_fd, cur_offset + pos + 8, SEEK_SET);
4338 tfile_read ((gdb_byte *) &mlen, 2);
4339 mlen = (unsigned short)
4340 extract_unsigned_integer ((gdb_byte *) &mlen, 2,
4343 lseek (trace_fd, mlen, SEEK_CUR);
4344 pos += (8 + 2 + mlen);
4347 lseek (trace_fd, cur_offset + pos + 4 + 8, SEEK_SET);
4351 error (_("Unknown block type '%c' (0x%x) in trace frame"),
4352 block_type, block_type);
4360 /* Convenience wrapper around traceframe_walk_blocks. Looks for the
4361 position offset of a block of type TYPE_WANTED in the current trace
4362 frame, starting at POS. Returns -1 if no such block was found. */
4365 traceframe_find_block_type (char type_wanted, int pos)
4367 return traceframe_walk_blocks (match_blocktype, pos, &type_wanted);
4370 /* Look for a block of saved registers in the traceframe, and get the
4371 requested register from it. */
4374 tfile_fetch_registers (struct target_ops *ops,
4375 struct regcache *regcache, int regno)
4377 struct gdbarch *gdbarch = get_regcache_arch (regcache);
4379 int pos, offset, regn, regsize, pc_regno;
4380 unsigned short mlen;
4383 /* An uninitialized reg size says we're not going to be
4384 successful at getting register blocks. */
4385 if (!trace_regblock_size)
4388 set_tfile_traceframe ();
4390 regs = alloca (trace_regblock_size);
4392 if (traceframe_find_block_type ('R', 0) >= 0)
4394 tfile_read (regs, trace_regblock_size);
4396 /* Assume the block is laid out in GDB register number order,
4397 each register with the size that it has in GDB. */
4399 for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
4401 regsize = register_size (gdbarch, regn);
4402 /* Make sure we stay within block bounds. */
4403 if (offset + regsize >= trace_regblock_size)
4405 if (regcache_register_status (regcache, regn) == REG_UNKNOWN)
4409 regcache_raw_supply (regcache, regno, regs + offset);
4412 else if (regno == -1)
4414 regcache_raw_supply (regcache, regn, regs + offset);
4422 /* We get here if no register data has been found. Mark registers
4424 for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++)
4425 regcache_raw_supply (regcache, regn, NULL);
4427 /* We can often usefully guess that the PC is going to be the same
4428 as the address of the tracepoint. */
4429 pc_regno = gdbarch_pc_regnum (gdbarch);
4430 if (pc_regno >= 0 && (regno == -1 || regno == pc_regno))
4432 struct tracepoint *tp = get_tracepoint (tracepoint_number);
4434 if (tp && tp->base.loc)
4436 /* But don't try to guess if tracepoint is multi-location... */
4437 if (tp->base.loc->next)
4439 warning (_("Tracepoint %d has multiple "
4440 "locations, cannot infer $pc"),
4444 /* ... or does while-stepping. */
4445 if (tp->step_count > 0)
4447 warning (_("Tracepoint %d does while-stepping, "
4448 "cannot infer $pc"),
4453 store_unsigned_integer (regs, register_size (gdbarch, pc_regno),
4454 gdbarch_byte_order (gdbarch),
4455 tp->base.loc->address);
4456 regcache_raw_supply (regcache, pc_regno, regs);
4462 tfile_xfer_partial (struct target_ops *ops, enum target_object object,
4463 const char *annex, gdb_byte *readbuf,
4464 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
4466 /* We're only doing regular memory for now. */
4467 if (object != TARGET_OBJECT_MEMORY)
4470 if (readbuf == NULL)
4471 error (_("tfile_xfer_partial: trace file is read-only"));
4473 set_tfile_traceframe ();
4475 if (traceframe_number != -1)
4479 /* Iterate through the traceframe's blocks, looking for
4481 while ((pos = traceframe_find_block_type ('M', pos)) >= 0)
4483 ULONGEST maddr, amt;
4484 unsigned short mlen;
4485 enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
4487 tfile_read ((gdb_byte *) &maddr, 8);
4488 maddr = extract_unsigned_integer ((gdb_byte *) &maddr, 8,
4490 tfile_read ((gdb_byte *) &mlen, 2);
4491 mlen = (unsigned short)
4492 extract_unsigned_integer ((gdb_byte *) &mlen, 2, byte_order);
4494 /* If the block includes the first part of the desired
4495 range, return as much it has; GDB will re-request the
4496 remainder, which might be in a different block of this
4498 if (maddr <= offset && offset < (maddr + mlen))
4500 amt = (maddr + mlen) - offset;
4504 tfile_read (readbuf, amt);
4508 /* Skip over this block. */
4509 pos += (8 + 2 + mlen);
4513 /* It's unduly pedantic to refuse to look at the executable for
4514 read-only pieces; so do the equivalent of readonly regions aka
4516 /* FIXME account for relocation at some point. */
4523 for (s = exec_bfd->sections; s; s = s->next)
4525 if ((s->flags & SEC_LOAD) == 0
4526 || (s->flags & SEC_READONLY) == 0)
4530 size = bfd_get_section_size (s);
4531 if (vma <= offset && offset < (vma + size))
4535 amt = (vma + size) - offset;
4539 amt = bfd_get_section_contents (exec_bfd, s,
4540 readbuf, offset - vma, amt);
4546 /* Indicate failure to find the requested memory block. */
4550 /* Iterate through the blocks of a trace frame, looking for a 'V'
4551 block with a matching tsv number. */
4554 tfile_get_trace_state_variable_value (int tsvnum, LONGEST *val)
4558 set_tfile_traceframe ();
4561 while ((pos = traceframe_find_block_type ('V', pos)) >= 0)
4565 tfile_read ((gdb_byte *) &vnum, 4);
4566 vnum = (int) extract_signed_integer ((gdb_byte *) &vnum, 4,
4571 tfile_read ((gdb_byte *) val, 8);
4572 *val = extract_signed_integer ((gdb_byte *) val, 8,
4580 /* Didn't find anything. */
4585 tfile_has_all_memory (struct target_ops *ops)
4591 tfile_has_memory (struct target_ops *ops)
4597 tfile_has_stack (struct target_ops *ops)
4599 return traceframe_number != -1;
4603 tfile_has_registers (struct target_ops *ops)
4605 return traceframe_number != -1;
4609 tfile_thread_alive (struct target_ops *ops, ptid_t ptid)
4614 /* Callback for traceframe_walk_blocks. Builds a traceframe_info
4615 object for the tfile target's current traceframe. */
4618 build_traceframe_info (char blocktype, void *data)
4620 struct traceframe_info *info = data;
4626 struct mem_range *r;
4628 unsigned short mlen;
4630 tfile_read ((gdb_byte *) &maddr, 8);
4631 tfile_read ((gdb_byte *) &mlen, 2);
4633 r = VEC_safe_push (mem_range_s, info->memory, NULL);
4646 warning (_("Unhandled trace block type (%d) '%c ' "
4647 "while building trace frame info."),
4648 blocktype, blocktype);
4655 static struct traceframe_info *
4656 tfile_traceframe_info (void)
4658 struct traceframe_info *info = XCNEW (struct traceframe_info);
4660 traceframe_walk_blocks (build_traceframe_info, 0, info);
4665 init_tfile_ops (void)
4667 tfile_ops.to_shortname = "tfile";
4668 tfile_ops.to_longname = "Local trace dump file";
4670 = "Use a trace file as a target. Specify the filename of the trace file.";
4671 tfile_ops.to_open = tfile_open;
4672 tfile_ops.to_close = tfile_close;
4673 tfile_ops.to_fetch_registers = tfile_fetch_registers;
4674 tfile_ops.to_xfer_partial = tfile_xfer_partial;
4675 tfile_ops.to_files_info = tfile_files_info;
4676 tfile_ops.to_get_trace_status = tfile_get_trace_status;
4677 tfile_ops.to_get_tracepoint_status = tfile_get_tracepoint_status;
4678 tfile_ops.to_trace_find = tfile_trace_find;
4679 tfile_ops.to_get_trace_state_variable_value
4680 = tfile_get_trace_state_variable_value;
4681 tfile_ops.to_stratum = process_stratum;
4682 tfile_ops.to_has_all_memory = tfile_has_all_memory;
4683 tfile_ops.to_has_memory = tfile_has_memory;
4684 tfile_ops.to_has_stack = tfile_has_stack;
4685 tfile_ops.to_has_registers = tfile_has_registers;
4686 tfile_ops.to_traceframe_info = tfile_traceframe_info;
4687 tfile_ops.to_thread_alive = tfile_thread_alive;
4688 tfile_ops.to_magic = OPS_MAGIC;
4691 /* Given a line of text defining a static tracepoint marker, parse it
4692 into a "static tracepoint marker" object. Throws an error is
4693 parsing fails. If PP is non-null, it points to one past the end of
4694 the parsed marker definition. */
4697 parse_static_tracepoint_marker_definition (char *line, char **pp,
4698 struct static_tracepoint_marker *marker)
4705 p = unpack_varlen_hex (p, &addr);
4706 p++; /* skip a colon */
4708 marker->gdbarch = target_gdbarch;
4709 marker->address = (CORE_ADDR) addr;
4711 endp = strchr (p, ':');
4713 error (_("bad marker definition: %s"), line);
4715 marker->str_id = xmalloc (endp - p + 1);
4716 end = hex2bin (p, (gdb_byte *) marker->str_id, (endp - p + 1) / 2);
4717 marker->str_id[end] = '\0';
4720 p++; /* skip a colon */
4722 marker->extra = xmalloc (strlen (p) + 1);
4723 end = hex2bin (p, (gdb_byte *) marker->extra, strlen (p) / 2);
4724 marker->extra[end] = '\0';
4730 /* Release a static tracepoint marker's contents. Note that the
4731 object itself isn't released here. There objects are usually on
4735 release_static_tracepoint_marker (struct static_tracepoint_marker *marker)
4737 xfree (marker->str_id);
4738 marker->str_id = NULL;
4741 /* Print MARKER to gdb_stdout. */
4744 print_one_static_tracepoint_marker (int count,
4745 struct static_tracepoint_marker *marker)
4747 struct command_line *l;
4750 char wrap_indent[80];
4751 char extra_field_indent[80];
4752 struct ui_out *uiout = current_uiout;
4753 struct ui_stream *stb = ui_out_stream_new (uiout);
4754 struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb);
4755 struct cleanup *bkpt_chain;
4756 VEC(breakpoint_p) *tracepoints;
4758 struct symtab_and_line sal;
4762 sal.pc = marker->address;
4764 tracepoints = static_tracepoints_here (marker->address);
4766 bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "marker");
4768 /* A counter field to help readability. This is not a stable
4770 ui_out_field_int (uiout, "count", count);
4772 ui_out_field_string (uiout, "marker-id", marker->str_id);
4774 ui_out_field_fmt (uiout, "enabled", "%c",
4775 !VEC_empty (breakpoint_p, tracepoints) ? 'y' : 'n');
4776 ui_out_spaces (uiout, 2);
4778 strcpy (wrap_indent, " ");
4780 if (gdbarch_addr_bit (marker->gdbarch) <= 32)
4781 strcat (wrap_indent, " ");
4783 strcat (wrap_indent, " ");
4785 strcpy (extra_field_indent, " ");
4787 ui_out_field_core_addr (uiout, "addr", marker->gdbarch, marker->address);
4789 sal = find_pc_line (marker->address, 0);
4790 sym = find_pc_sect_function (marker->address, NULL);
4793 ui_out_text (uiout, "in ");
4794 ui_out_field_string (uiout, "func",
4795 SYMBOL_PRINT_NAME (sym));
4796 ui_out_wrap_hint (uiout, wrap_indent);
4797 ui_out_text (uiout, " at ");
4800 ui_out_field_skip (uiout, "func");
4802 if (sal.symtab != NULL)
4804 ui_out_field_string (uiout, "file", sal.symtab->filename);
4805 ui_out_text (uiout, ":");
4807 if (ui_out_is_mi_like_p (uiout))
4809 char *fullname = symtab_to_fullname (sal.symtab);
4812 ui_out_field_string (uiout, "fullname", fullname);
4815 ui_out_field_skip (uiout, "fullname");
4817 ui_out_field_int (uiout, "line", sal.line);
4821 ui_out_field_skip (uiout, "fullname");
4822 ui_out_field_skip (uiout, "line");
4825 ui_out_text (uiout, "\n");
4826 ui_out_text (uiout, extra_field_indent);
4827 ui_out_text (uiout, _("Data: \""));
4828 ui_out_field_string (uiout, "extra-data", marker->extra);
4829 ui_out_text (uiout, "\"\n");
4831 if (!VEC_empty (breakpoint_p, tracepoints))
4833 struct cleanup *cleanup_chain;
4835 struct breakpoint *b;
4837 cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout,
4840 ui_out_text (uiout, extra_field_indent);
4841 ui_out_text (uiout, _("Probed by static tracepoints: "));
4842 for (ix = 0; VEC_iterate(breakpoint_p, tracepoints, ix, b); ix++)
4845 ui_out_text (uiout, ", ");
4846 ui_out_text (uiout, "#");
4847 ui_out_field_int (uiout, "tracepoint-id", b->number);
4850 do_cleanups (cleanup_chain);
4852 if (ui_out_is_mi_like_p (uiout))
4853 ui_out_field_int (uiout, "number-of-tracepoints",
4854 VEC_length(breakpoint_p, tracepoints));
4856 ui_out_text (uiout, "\n");
4858 VEC_free (breakpoint_p, tracepoints);
4860 do_cleanups (bkpt_chain);
4861 do_cleanups (old_chain);
4865 info_static_tracepoint_markers_command (char *arg, int from_tty)
4867 VEC(static_tracepoint_marker_p) *markers;
4868 struct cleanup *old_chain;
4869 struct static_tracepoint_marker *marker;
4870 struct ui_out *uiout = current_uiout;
4874 = make_cleanup_ui_out_table_begin_end (uiout, 5, -1,
4875 "StaticTracepointMarkersTable");
4877 ui_out_table_header (uiout, 7, ui_left, "counter", "Cnt");
4879 ui_out_table_header (uiout, 40, ui_left, "marker-id", "ID");
4881 ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb");
4882 if (gdbarch_addr_bit (target_gdbarch) <= 32)
4883 ui_out_table_header (uiout, 10, ui_left, "addr", "Address");
4885 ui_out_table_header (uiout, 18, ui_left, "addr", "Address");
4886 ui_out_table_header (uiout, 40, ui_noalign, "what", "What");
4888 ui_out_table_body (uiout);
4890 markers = target_static_tracepoint_markers_by_strid (NULL);
4891 make_cleanup (VEC_cleanup (static_tracepoint_marker_p), &markers);
4894 VEC_iterate (static_tracepoint_marker_p,
4895 markers, i, marker);
4898 print_one_static_tracepoint_marker (i + 1, marker);
4899 release_static_tracepoint_marker (marker);
4902 do_cleanups (old_chain);
4905 /* The $_sdata convenience variable is a bit special. We don't know
4906 for sure type of the value until we actually have a chance to fetch
4907 the data --- the size of the object depends on what has been
4908 collected. We solve this by making $_sdata be an internalvar that
4909 creates a new value on access. */
4911 /* Return a new value with the correct type for the sdata object of
4912 the current trace frame. Return a void value if there's no object
4915 static struct value *
4916 sdata_make_value (struct gdbarch *gdbarch, struct internalvar *var)
4921 /* We need to read the whole object before we know its size. */
4922 size = target_read_alloc (¤t_target,
4923 TARGET_OBJECT_STATIC_TRACE_DATA,
4930 type = init_vector_type (builtin_type (gdbarch)->builtin_true_char,
4932 v = allocate_value (type);
4933 memcpy (value_contents_raw (v), buf, size);
4938 return allocate_value (builtin_type (gdbarch)->builtin_void);
4941 #if !defined(HAVE_LIBEXPAT)
4943 struct traceframe_info *
4944 parse_traceframe_info (const char *tframe_info)
4946 static int have_warned;
4951 warning (_("Can not parse XML trace frame info; XML support "
4952 "was disabled at compile time"));
4958 #else /* HAVE_LIBEXPAT */
4960 #include "xml-support.h"
4962 /* Handle the start of a <memory> element. */
4965 traceframe_info_start_memory (struct gdb_xml_parser *parser,
4966 const struct gdb_xml_element *element,
4967 void *user_data, VEC(gdb_xml_value_s) *attributes)
4969 struct traceframe_info *info = user_data;
4970 struct mem_range *r = VEC_safe_push (mem_range_s, info->memory, NULL);
4971 ULONGEST *start_p, *length_p;
4973 start_p = xml_find_attribute (attributes, "start")->value;
4974 length_p = xml_find_attribute (attributes, "length")->value;
4976 r->start = *start_p;
4977 r->length = *length_p;
4980 /* Discard the constructed trace frame info (if an error occurs). */
4983 free_result (void *p)
4985 struct traceframe_info *result = p;
4987 free_traceframe_info (result);
4990 /* The allowed elements and attributes for an XML memory map. */
4992 static const struct gdb_xml_attribute memory_attributes[] = {
4993 { "start", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
4994 { "length", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
4995 { NULL, GDB_XML_AF_NONE, NULL, NULL }
4998 static const struct gdb_xml_element traceframe_info_children[] = {
4999 { "memory", memory_attributes, NULL,
5000 GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
5001 traceframe_info_start_memory, NULL },
5002 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
5005 static const struct gdb_xml_element traceframe_info_elements[] = {
5006 { "traceframe-info", NULL, traceframe_info_children, GDB_XML_EF_NONE,
5008 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
5011 /* Parse a traceframe-info XML document. */
5013 struct traceframe_info *
5014 parse_traceframe_info (const char *tframe_info)
5016 struct traceframe_info *result;
5017 struct cleanup *back_to;
5019 result = XCNEW (struct traceframe_info);
5020 back_to = make_cleanup (free_result, result);
5022 if (gdb_xml_parse_quick (_("trace frame info"),
5023 "traceframe-info.dtd", traceframe_info_elements,
5024 tframe_info, result) == 0)
5026 /* Parsed successfully, keep the result. */
5027 discard_cleanups (back_to);
5032 do_cleanups (back_to);
5036 #endif /* HAVE_LIBEXPAT */
5038 /* Returns the traceframe_info object for the current traceframe.
5039 This is where we avoid re-fetching the object from the target if we
5040 already have it cached. */
5042 struct traceframe_info *
5043 get_traceframe_info (void)
5045 if (traceframe_info == NULL)
5046 traceframe_info = target_traceframe_info ();
5048 return traceframe_info;
5051 /* If the target supports the query, return in RESULT the set of
5052 collected memory in the current traceframe, found within the LEN
5053 bytes range starting at MEMADDR. Returns true if the target
5054 supports the query, otherwise returns false, and RESULT is left
5058 traceframe_available_memory (VEC(mem_range_s) **result,
5059 CORE_ADDR memaddr, ULONGEST len)
5061 struct traceframe_info *info = get_traceframe_info ();
5065 struct mem_range *r;
5070 for (i = 0; VEC_iterate (mem_range_s, info->memory, i, r); i++)
5071 if (mem_ranges_overlap (r->start, r->length, memaddr, len))
5073 ULONGEST lo1, hi1, lo2, hi2;
5074 struct mem_range *nr;
5077 hi1 = memaddr + len;
5080 hi2 = r->start + r->length;
5082 nr = VEC_safe_push (mem_range_s, *result, NULL);
5084 nr->start = max (lo1, lo2);
5085 nr->length = min (hi1, hi2) - nr->start;
5088 normalize_mem_ranges (*result);
5095 /* module initialization */
5097 _initialize_tracepoint (void)
5099 struct cmd_list_element *c;
5101 /* Explicitly create without lookup, since that tries to create a
5102 value with a void typed value, and when we get here, gdbarch
5103 isn't initialized yet. At this point, we're quite sure there
5104 isn't another convenience variable of the same name. */
5105 create_internalvar_type_lazy ("_sdata", sdata_make_value);
5107 traceframe_number = -1;
5108 tracepoint_number = -1;
5110 if (tracepoint_list.list == NULL)
5112 tracepoint_list.listsize = 128;
5113 tracepoint_list.list = xmalloc
5114 (tracepoint_list.listsize * sizeof (struct memrange));
5116 if (tracepoint_list.aexpr_list == NULL)
5118 tracepoint_list.aexpr_listsize = 128;
5119 tracepoint_list.aexpr_list = xmalloc
5120 (tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *));
5123 if (stepping_list.list == NULL)
5125 stepping_list.listsize = 128;
5126 stepping_list.list = xmalloc
5127 (stepping_list.listsize * sizeof (struct memrange));
5130 if (stepping_list.aexpr_list == NULL)
5132 stepping_list.aexpr_listsize = 128;
5133 stepping_list.aexpr_list = xmalloc
5134 (stepping_list.aexpr_listsize * sizeof (struct agent_expr *));
5137 add_info ("scope", scope_info,
5138 _("List the variables local to a scope"));
5140 add_cmd ("tracepoints", class_trace, NULL,
5141 _("Tracing of program execution without stopping the program."),
5144 add_com ("tdump", class_trace, trace_dump_command,
5145 _("Print everything collected at the current tracepoint."));
5147 add_com ("tsave", class_trace, trace_save_command, _("\
5148 Save the trace data to a file.\n\
5149 Use the '-r' option to direct the target to save directly to the file,\n\
5150 using its own filesystem."));
5152 c = add_com ("tvariable", class_trace, trace_variable_command,_("\
5153 Define a trace state variable.\n\
5154 Argument is a $-prefixed name, optionally followed\n\
5155 by '=' and an expression that sets the initial value\n\
5156 at the start of tracing."));
5157 set_cmd_completer (c, expression_completer);
5159 add_cmd ("tvariable", class_trace, delete_trace_variable_command, _("\
5160 Delete one or more trace state variables.\n\
5161 Arguments are the names of the variables to delete.\n\
5162 If no arguments are supplied, delete all variables."), &deletelist);
5163 /* FIXME add a trace variable completer. */
5165 add_info ("tvariables", tvariables_info, _("\
5166 Status of trace state variables and their values.\n\
5169 add_info ("static-tracepoint-markers",
5170 info_static_tracepoint_markers_command, _("\
5171 List target static tracepoints markers.\n\
5174 add_prefix_cmd ("tfind", class_trace, trace_find_command, _("\
5175 Select a trace frame;\n\
5176 No argument means forward by one frame; '-' means backward by one frame."),
5177 &tfindlist, "tfind ", 1, &cmdlist);
5179 add_cmd ("outside", class_trace, trace_find_outside_command, _("\
5180 Select a trace frame whose PC is outside the given range (exclusive).\n\
5181 Usage: tfind outside addr1, addr2"),
5184 add_cmd ("range", class_trace, trace_find_range_command, _("\
5185 Select a trace frame whose PC is in the given range (inclusive).\n\
5186 Usage: tfind range addr1,addr2"),
5189 add_cmd ("line", class_trace, trace_find_line_command, _("\
5190 Select a trace frame by source line.\n\
5191 Argument can be a line number (with optional source file),\n\
5192 a function name, or '*' followed by an address.\n\
5193 Default argument is 'the next source line that was traced'."),
5196 add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, _("\
5197 Select a trace frame by tracepoint number.\n\
5198 Default is the tracepoint for the current trace frame."),
5201 add_cmd ("pc", class_trace, trace_find_pc_command, _("\
5202 Select a trace frame by PC.\n\
5203 Default is the current PC, or the PC of the current trace frame."),
5206 add_cmd ("end", class_trace, trace_find_end_command, _("\
5207 Synonym for 'none'.\n\
5208 De-select any trace frame and resume 'live' debugging."),
5211 add_cmd ("none", class_trace, trace_find_none_command,
5212 _("De-select any trace frame and resume 'live' debugging."),
5215 add_cmd ("start", class_trace, trace_find_start_command,
5216 _("Select the first trace frame in the trace buffer."),
5219 add_com ("tstatus", class_trace, trace_status_command,
5220 _("Display the status of the current trace data collection."));
5222 add_com ("tstop", class_trace, trace_stop_command, _("\
5223 Stop trace data collection.\n\
5224 Usage: tstop [ <notes> ... ]\n\
5225 Any arguments supplied are recorded with the trace as a stop reason and\n\
5226 reported by tstatus (if the target supports trace notes)."));
5228 add_com ("tstart", class_trace, trace_start_command, _("\
5229 Start trace data collection.\n\
5230 Usage: tstart [ <notes> ... ]\n\
5231 Any arguments supplied are recorded with the trace as a note and\n\
5232 reported by tstatus (if the target supports trace notes)."));
5234 add_com ("end", class_trace, end_actions_pseudocommand, _("\
5235 Ends a list of commands or actions.\n\
5236 Several GDB commands allow you to enter a list of commands or actions.\n\
5237 Entering \"end\" on a line by itself is the normal way to terminate\n\
5239 Note: the \"end\" command cannot be used at the gdb prompt."));
5241 add_com ("while-stepping", class_trace, while_stepping_pseudocommand, _("\
5242 Specify single-stepping behavior at a tracepoint.\n\
5243 Argument is number of instructions to trace in single-step mode\n\
5244 following the tracepoint. This command is normally followed by\n\
5245 one or more \"collect\" commands, to specify what to collect\n\
5246 while single-stepping.\n\n\
5247 Note: this command can only be used in a tracepoint \"actions\" list."));
5249 add_com_alias ("ws", "while-stepping", class_alias, 0);
5250 add_com_alias ("stepping", "while-stepping", class_alias, 0);
5252 add_com ("collect", class_trace, collect_pseudocommand, _("\
5253 Specify one or more data items to be collected at a tracepoint.\n\
5254 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
5255 collect all data (variables, registers) referenced by that expression.\n\
5256 Also accepts the following special arguments:\n\
5257 $regs -- all registers.\n\
5258 $args -- all function arguments.\n\
5259 $locals -- all variables local to the block/function scope.\n\
5260 $_sdata -- static tracepoint data (ignored for non-static tracepoints).\n\
5261 Note: this command can only be used in a tracepoint \"actions\" list."));
5263 add_com ("teval", class_trace, teval_pseudocommand, _("\
5264 Specify one or more expressions to be evaluated at a tracepoint.\n\
5265 Accepts a comma-separated list of (one or more) expressions.\n\
5266 The result of each evaluation will be discarded.\n\
5267 Note: this command can only be used in a tracepoint \"actions\" list."));
5269 add_com ("actions", class_trace, trace_actions_command, _("\
5270 Specify the actions to be taken at a tracepoint.\n\
5271 Tracepoint actions may include collecting of specified data,\n\
5272 single-stepping, or enabling/disabling other tracepoints,\n\
5273 depending on target's capabilities."));
5275 default_collect = xstrdup ("");
5276 add_setshow_string_cmd ("default-collect", class_trace,
5277 &default_collect, _("\
5278 Set the list of expressions to collect by default"), _("\
5279 Show the list of expressions to collect by default"), NULL,
5281 &setlist, &showlist);
5283 add_setshow_boolean_cmd ("disconnected-tracing", no_class,
5284 &disconnected_tracing, _("\
5285 Set whether tracing continues after GDB disconnects."), _("\
5286 Show whether tracing continues after GDB disconnects."), _("\
5287 Use this to continue a tracing run even if GDB disconnects\n\
5288 or detaches from the target. You can reconnect later and look at\n\
5289 trace data collected in the meantime."),
5290 set_disconnected_tracing,
5295 add_setshow_boolean_cmd ("circular-trace-buffer", no_class,
5296 &circular_trace_buffer, _("\
5297 Set target's use of circular trace buffer."), _("\
5298 Show target's use of circular trace buffer."), _("\
5299 Use this to make the trace buffer into a circular buffer,\n\
5300 which will discard traceframes (oldest first) instead of filling\n\
5301 up and stopping the trace run."),
5302 set_circular_trace_buffer,
5307 add_setshow_string_cmd ("trace-user", class_trace,
5309 Set the user name to use for current and future trace runs"), _("\
5310 Show the user name to use for current and future trace runs"), NULL,
5311 set_trace_user, NULL,
5312 &setlist, &showlist);
5314 add_setshow_string_cmd ("trace-notes", class_trace,
5316 Set notes string to use for current and future trace runs"), _("\
5317 Show the notes string to use for current and future trace runs"), NULL,
5318 set_trace_notes, NULL,
5319 &setlist, &showlist);
5321 add_setshow_string_cmd ("trace-stop-notes", class_trace,
5322 &trace_stop_notes, _("\
5323 Set notes string to use for future tstop commands"), _("\
5324 Show the notes string to use for future tstop commands"), NULL,
5325 set_trace_stop_notes, NULL,
5326 &setlist, &showlist);
5330 add_target (&tfile_ops);