1 /* Tracing functionality for remote targets in custom GDB protocol
2 Copyright 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include "expression.h"
30 #include "gdb_string.h"
32 #include "tracepoint.h"
36 #include "completer.h"
37 #include "gdb-events.h"
42 /* readline include files */
43 #include <readline/readline.h>
44 #include <readline/history.h>
46 /* readline defines this. */
53 /* maximum length of an agent aexpression.
54 this accounts for the fact that packets are limited to 400 bytes
55 (which includes everything -- including the checksum), and assumes
56 the worst case of maximum length for each of the pieces of a
59 NOTE: expressions get mem2hex'ed otherwise this would be twice as
60 large. (400 - 31)/2 == 184 */
61 #define MAX_AGENT_EXPR_LEN 184
64 extern int info_verbose;
65 extern void (*readline_begin_hook) (char *, ...);
66 extern char *(*readline_hook) (char *);
67 extern void (*readline_end_hook) (void);
68 extern void x_command (char *, int);
69 extern int addressprint; /* Print machine addresses? */
71 /* GDB commands implemented in other modules:
74 extern void output_command (char *, int);
75 extern void registers_info (char *, int);
76 extern void args_info (char *, int);
77 extern void locals_info (char *, int);
80 /* If this definition isn't overridden by the header files, assume
81 that isatty and fileno exist on this system. */
83 #define ISATTY(FP) (isatty (fileno (FP)))
89 This module defines the following debugger commands:
90 trace : set a tracepoint on a function, line, or address.
91 info trace : list all debugger-defined tracepoints.
92 delete trace : delete one or more tracepoints.
93 enable trace : enable one or more tracepoints.
94 disable trace : disable one or more tracepoints.
95 actions : specify actions to be taken at a tracepoint.
96 passcount : specify a pass count for a tracepoint.
97 tstart : start a trace experiment.
98 tstop : stop a trace experiment.
99 tstatus : query the status of a trace experiment.
100 tfind : find a trace frame in the trace buffer.
101 tdump : print everything collected at the current tracepoint.
102 save-tracepoints : write tracepoint setup into a file.
104 This module defines the following user-visible debugger variables:
105 $trace_frame : sequence number of trace frame currently being debugged.
106 $trace_line : source line of trace frame currently being debugged.
107 $trace_file : source file of trace frame currently being debugged.
108 $tracepoint : tracepoint number of trace frame currently being debugged.
112 /* ======= Important global variables: ======= */
114 /* Chain of all tracepoints defined. */
115 struct tracepoint *tracepoint_chain;
117 /* Number of last tracepoint made. */
118 static int tracepoint_count;
120 /* Number of last traceframe collected. */
121 static int traceframe_number;
123 /* Tracepoint for last traceframe collected. */
124 static int tracepoint_number;
126 /* Symbol for function for last traceframe collected */
127 static struct symbol *traceframe_fun;
129 /* Symtab and line for last traceframe collected */
130 static struct symtab_and_line traceframe_sal;
132 /* Tracing command lists */
133 static struct cmd_list_element *tfindlist;
135 /* ======= Important command functions: ======= */
136 static void trace_command (char *, int);
137 static void tracepoints_info (char *, int);
138 static void delete_trace_command (char *, int);
139 static void enable_trace_command (char *, int);
140 static void disable_trace_command (char *, int);
141 static void trace_pass_command (char *, int);
142 static void trace_actions_command (char *, int);
143 static void trace_start_command (char *, int);
144 static void trace_stop_command (char *, int);
145 static void trace_status_command (char *, int);
146 static void trace_find_command (char *, int);
147 static void trace_find_pc_command (char *, int);
148 static void trace_find_tracepoint_command (char *, int);
149 static void trace_find_line_command (char *, int);
150 static void trace_find_range_command (char *, int);
151 static void trace_find_outside_command (char *, int);
152 static void tracepoint_save_command (char *, int);
153 static void trace_dump_command (char *, int);
155 /* support routines */
156 static void trace_mention (struct tracepoint *);
158 struct collection_list;
159 static void add_aexpr (struct collection_list *, struct agent_expr *);
160 static unsigned char *mem2hex (unsigned char *, unsigned char *, int);
161 static void add_register (struct collection_list *collection,
163 static struct cleanup *make_cleanup_free_actions (struct tracepoint *t);
164 static void free_actions_list (char **actions_list);
165 static void free_actions_list_cleanup_wrapper (void *);
167 extern void _initialize_tracepoint (void);
169 /* Utility: returns true if "target remote" */
171 target_is_remote (void)
173 if (current_target.to_shortname &&
174 strcmp (current_target.to_shortname, "remote") == 0)
180 /* Utility: generate error from an incoming stub packet. */
182 trace_error (char *buf)
185 return; /* not an error msg */
188 case '1': /* malformed packet error */
189 if (*++buf == '0') /* general case: */
190 error ("tracepoint.c: error in outgoing packet.");
192 error ("tracepoint.c: error in outgoing packet at field #%d.",
193 strtol (buf, NULL, 16));
195 error ("trace API error 0x%s.", ++buf);
197 error ("Target returns error code '%s'.", buf);
201 /* Utility: wait for reply from stub, while accepting "O" packets */
203 remote_get_noisy_reply (char *buf,
206 do /* loop on reply from remote stub */
208 QUIT; /* allow user to bail out with ^C */
209 getpkt (buf, sizeof_buf, 0);
211 error ("Target does not support this command.");
212 else if (buf[0] == 'E')
214 else if (buf[0] == 'O' &&
216 remote_console_output (buf + 1); /* 'O' message from stub */
218 return buf; /* here's the actual reply */
223 /* Set tracepoint count to NUM. */
225 set_tracepoint_count (int num)
227 tracepoint_count = num;
228 set_internalvar (lookup_internalvar ("tpnum"),
229 value_from_longest (builtin_type_int, (LONGEST) num));
232 /* Set traceframe number to NUM. */
234 set_traceframe_num (int num)
236 traceframe_number = num;
237 set_internalvar (lookup_internalvar ("trace_frame"),
238 value_from_longest (builtin_type_int, (LONGEST) num));
241 /* Set tracepoint number to NUM. */
243 set_tracepoint_num (int num)
245 tracepoint_number = num;
246 set_internalvar (lookup_internalvar ("tracepoint"),
247 value_from_longest (builtin_type_int, (LONGEST) num));
250 /* Set externally visible debug variables for querying/printing
251 the traceframe context (line, function, file) */
254 set_traceframe_context (CORE_ADDR trace_pc)
256 static struct type *func_string, *file_string;
257 static struct type *func_range, *file_range;
258 static value_ptr func_val, file_val;
259 static struct type *charstar;
262 if (charstar == (struct type *) NULL)
263 charstar = lookup_pointer_type (builtin_type_char);
265 if (trace_pc == -1) /* cease debugging any trace buffers */
268 traceframe_sal.pc = traceframe_sal.line = 0;
269 traceframe_sal.symtab = NULL;
270 set_internalvar (lookup_internalvar ("trace_func"),
271 value_from_pointer (charstar, (LONGEST) 0));
272 set_internalvar (lookup_internalvar ("trace_file"),
273 value_from_pointer (charstar, (LONGEST) 0));
274 set_internalvar (lookup_internalvar ("trace_line"),
275 value_from_pointer (builtin_type_int, (LONGEST) - 1));
279 /* save as globals for internal use */
280 traceframe_sal = find_pc_line (trace_pc, 0);
281 traceframe_fun = find_pc_function (trace_pc);
283 /* save linenumber as "$trace_line", a debugger variable visible to users */
284 set_internalvar (lookup_internalvar ("trace_line"),
285 value_from_longest (builtin_type_int,
286 (LONGEST) traceframe_sal.line));
288 /* save func name as "$trace_func", a debugger variable visible to users */
289 if (traceframe_fun == NULL ||
290 SYMBOL_NAME (traceframe_fun) == NULL)
291 set_internalvar (lookup_internalvar ("trace_func"),
292 value_from_pointer (charstar, (LONGEST) 0));
295 len = strlen (SYMBOL_NAME (traceframe_fun));
296 func_range = create_range_type (func_range,
297 builtin_type_int, 0, len - 1);
298 func_string = create_array_type (func_string,
299 builtin_type_char, func_range);
300 func_val = allocate_value (func_string);
301 VALUE_TYPE (func_val) = func_string;
302 memcpy (VALUE_CONTENTS_RAW (func_val),
303 SYMBOL_NAME (traceframe_fun),
305 func_val->modifiable = 0;
306 set_internalvar (lookup_internalvar ("trace_func"), func_val);
309 /* save file name as "$trace_file", a debugger variable visible to users */
310 if (traceframe_sal.symtab == NULL ||
311 traceframe_sal.symtab->filename == NULL)
312 set_internalvar (lookup_internalvar ("trace_file"),
313 value_from_pointer (charstar, (LONGEST) 0));
316 len = strlen (traceframe_sal.symtab->filename);
317 file_range = create_range_type (file_range,
318 builtin_type_int, 0, len - 1);
319 file_string = create_array_type (file_string,
320 builtin_type_char, file_range);
321 file_val = allocate_value (file_string);
322 VALUE_TYPE (file_val) = file_string;
323 memcpy (VALUE_CONTENTS_RAW (file_val),
324 traceframe_sal.symtab->filename,
326 file_val->modifiable = 0;
327 set_internalvar (lookup_internalvar ("trace_file"), file_val);
331 /* Low level routine to set a tracepoint.
332 Returns the tracepoint object so caller can set other things.
333 Does not set the tracepoint number!
334 Does not print anything.
336 ==> This routine should not be called if there is a chance of later
337 error(); otherwise it leaves a bogus tracepoint on the chain. Validate
338 your arguments BEFORE calling this routine! */
340 static struct tracepoint *
341 set_raw_tracepoint (struct symtab_and_line sal)
343 register struct tracepoint *t, *tc;
344 struct cleanup *old_chain;
346 t = (struct tracepoint *) xmalloc (sizeof (struct tracepoint));
347 old_chain = make_cleanup (xfree, t);
348 memset (t, 0, sizeof (*t));
350 if (sal.symtab == NULL)
351 t->source_file = NULL;
353 t->source_file = savestring (sal.symtab->filename,
354 strlen (sal.symtab->filename));
356 t->section = sal.section;
357 t->language = current_language->la_language;
358 t->input_radix = input_radix;
359 t->line_number = sal.line;
364 t->addr_string = NULL;
366 /* Add this tracepoint to the end of the chain
367 so that a list of tracepoints will come out in order
368 of increasing numbers. */
370 tc = tracepoint_chain;
372 tracepoint_chain = t;
379 discard_cleanups (old_chain);
383 /* Set a tracepoint according to ARG (function, linenum or *address) */
385 trace_command (char *arg, int from_tty)
387 char **canonical = (char **) NULL;
388 struct symtabs_and_lines sals;
389 struct symtab_and_line sal;
390 struct tracepoint *t;
391 char *addr_start = 0, *addr_end = 0;
395 error ("trace command requires an argument");
397 if (from_tty && info_verbose)
398 printf_filtered ("TRACE %s\n", arg);
401 sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, &canonical);
404 return; /* ??? Presumably decode_line_1 has already warned? */
406 /* Resolve all line numbers to PC's */
407 for (i = 0; i < sals.nelts; i++)
408 resolve_sal_pc (&sals.sals[i]);
410 /* Now set all the tracepoints. */
411 for (i = 0; i < sals.nelts; i++)
415 t = set_raw_tracepoint (sal);
416 set_tracepoint_count (tracepoint_count + 1);
417 t->number = tracepoint_count;
419 /* If a canonical line spec is needed use that instead of the
421 if (canonical != (char **) NULL && canonical[i] != NULL)
422 t->addr_string = canonical[i];
424 t->addr_string = savestring (addr_start, addr_end - addr_start);
431 printf_filtered ("Multiple tracepoints were set.\n");
432 printf_filtered ("Use 'delete trace' to delete unwanted tracepoints.\n");
436 /* Tell the user we have just set a tracepoint TP. */
439 trace_mention (struct tracepoint *tp)
441 printf_filtered ("Tracepoint %d", tp->number);
443 if (addressprint || (tp->source_file == NULL))
445 printf_filtered (" at ");
446 print_address_numeric (tp->address, 1, gdb_stdout);
449 printf_filtered (": file %s, line %d.",
450 tp->source_file, tp->line_number);
452 printf_filtered ("\n");
455 /* Print information on tracepoint number TPNUM_EXP, or all if omitted. */
458 tracepoints_info (char *tpnum_exp, int from_tty)
460 struct tracepoint *t;
461 struct action_line *action;
462 int found_a_tracepoint = 0;
463 char wrap_indent[80];
468 tpnum = parse_and_eval_long (tpnum_exp);
471 if (tpnum == -1 || tpnum == t->number)
473 extern int addressprint; /* print machine addresses? */
475 if (!found_a_tracepoint++)
477 printf_filtered ("Num Enb ");
480 if (TARGET_ADDR_BIT <= 32)
481 printf_filtered ("Address ");
483 printf_filtered ("Address ");
485 printf_filtered ("PassC StepC What\n");
487 strcpy (wrap_indent, " ");
490 if (TARGET_ADDR_BIT <= 32)
491 strcat (wrap_indent, " ");
493 strcat (wrap_indent, " ");
496 printf_filtered ("%-3d %-3s ", t->number,
497 t->enabled_p ? "y" : "n");
502 if (TARGET_ADDR_BIT <= 32)
503 tmp = longest_local_hex_string_custom (t->address
504 & (CORE_ADDR) 0xffffffff,
507 tmp = longest_local_hex_string_custom (t->address, "016l");
509 printf_filtered ("%s ", tmp);
511 printf_filtered ("%-5d %-5ld ", t->pass_count, t->step_count);
515 sym = find_pc_sect_function (t->address, t->section);
518 fputs_filtered ("in ", gdb_stdout);
519 fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout);
520 wrap_here (wrap_indent);
521 fputs_filtered (" at ", gdb_stdout);
523 fputs_filtered (t->source_file, gdb_stdout);
524 printf_filtered (":%d", t->line_number);
527 print_address_symbolic (t->address, gdb_stdout, demangle, " ");
529 printf_filtered ("\n");
532 printf_filtered (" Actions for tracepoint %d: \n", t->number);
533 for (action = t->actions; action; action = action->next)
535 printf_filtered ("\t%s\n", action->action);
539 if (!found_a_tracepoint)
542 printf_filtered ("No tracepoints.\n");
544 printf_filtered ("No tracepoint number %d.\n", tpnum);
548 /* Optimization: the code to parse an enable, disable, or delete TP command
549 is virtually identical except for whether it performs an enable, disable,
550 or delete. Therefore I've combined them into one function with an opcode.
552 enum tracepoint_opcode
559 /* This function implements enable, disable and delete commands. */
561 tracepoint_operation (struct tracepoint *t, int from_tty,
562 enum tracepoint_opcode opcode)
564 struct tracepoint *t2;
566 if (t == NULL) /* no tracepoint operand */
573 tracepoint_modify_event (t->number);
577 tracepoint_modify_event (t->number);
580 if (tracepoint_chain == t)
581 tracepoint_chain = t->next;
586 tracepoint_delete_event (t2->number);
592 xfree (t->addr_string);
594 xfree (t->source_file);
603 /* Utility: parse a tracepoint number and look it up in the list.
604 If MULTI_P is true, there might be a range of tracepoints in ARG.
605 if OPTIONAL_P is true, then if the argument is missing, the most
606 recent tracepoint (tracepoint_count) is returned. */
608 get_tracepoint_by_number (char **arg, int multi_p, int optional_p)
610 struct tracepoint *t;
612 char *instring = arg == NULL ? NULL : *arg;
614 if (arg == NULL || *arg == NULL || ! **arg)
617 tpnum = tracepoint_count;
619 error_no_arg ("tracepoint number");
622 tpnum = multi_p ? get_number_or_range (arg) : get_number (arg);
626 if (instring && *instring)
627 printf_filtered ("bad tracepoint number at or near '%s'\n", instring);
629 printf_filtered ("Tracepoint argument missing and no previous tracepoint\n");
634 if (t->number == tpnum)
639 /* FIXME: if we are in the middle of a range we don't want to give
640 a message. The current interface to get_number_or_range doesn't
641 allow us to discover this. */
642 printf_unfiltered ("No tracepoint number %d.\n", tpnum);
646 /* Utility: parse a list of tracepoint numbers, and call a func for each. */
648 map_args_over_tracepoints (char *args, int from_tty,
649 enum tracepoint_opcode opcode)
651 struct tracepoint *t, *tmp;
653 if (args == 0 || *args == 0) /* do them all */
654 ALL_TRACEPOINTS_SAFE (t, tmp)
655 tracepoint_operation (t, from_tty, opcode);
659 QUIT; /* give user option to bail out with ^C */
660 t = get_tracepoint_by_number (&args, 1, 0);
661 tracepoint_operation (t, from_tty, opcode);
662 while (*args == ' ' || *args == '\t')
667 /* The 'enable trace' command enables tracepoints. Not supported by all targets. */
669 enable_trace_command (char *args, int from_tty)
672 map_args_over_tracepoints (args, from_tty, enable_op);
675 /* The 'disable trace' command enables tracepoints. Not supported by all targets. */
677 disable_trace_command (char *args, int from_tty)
680 map_args_over_tracepoints (args, from_tty, disable_op);
683 /* Remove a tracepoint (or all if no argument) */
685 delete_trace_command (char *args, int from_tty)
688 if (!args || !*args) /* No args implies all tracepoints; */
689 if (from_tty) /* confirm only if from_tty... */
690 if (tracepoint_chain) /* and if there are tracepoints to delete! */
691 if (!query ("Delete all tracepoints? "))
694 map_args_over_tracepoints (args, from_tty, delete_op);
697 /* Set passcount for tracepoint.
699 First command argument is passcount, second is tracepoint number.
700 If tracepoint number omitted, apply to most recently defined.
701 Also accepts special argument "all". */
704 trace_pass_command (char *args, int from_tty)
706 struct tracepoint *t1 = (struct tracepoint *) -1, *t2;
710 if (args == 0 || *args == 0)
711 error ("passcount command requires an argument (count + optional TP num)");
713 count = strtoul (args, &args, 10); /* count comes first, then TP num */
715 while (*args && isspace ((int) *args))
718 if (*args && strncasecmp (args, "all", 3) == 0)
720 args += 3; /* skip special argument "all" */
723 error ("Junk at end of arguments.");
726 t1 = get_tracepoint_by_number (&args, 1, 1);
733 if (t1 == (struct tracepoint *) -1 || t1 == t2)
735 t2->pass_count = count;
736 tracepoint_modify_event (t2->number);
738 printf_filtered ("Setting tracepoint %d's passcount to %d\n",
742 t1 = get_tracepoint_by_number (&args, 1, 0);
748 /* ACTIONS functions: */
750 /* Prototypes for action-parsing utility commands */
751 static void read_actions (struct tracepoint *);
753 /* The three functions:
754 collect_pseudocommand,
755 while_stepping_pseudocommand, and
756 end_actions_pseudocommand
757 are placeholders for "commands" that are actually ONLY to be used
758 within a tracepoint action list. If the actual function is ever called,
759 it means that somebody issued the "command" at the top level,
760 which is always an error. */
763 end_actions_pseudocommand (char *args, int from_tty)
765 error ("This command cannot be used at the top level.");
769 while_stepping_pseudocommand (char *args, int from_tty)
771 error ("This command can only be used in a tracepoint actions list.");
775 collect_pseudocommand (char *args, int from_tty)
777 error ("This command can only be used in a tracepoint actions list.");
780 /* Enter a list of actions for a tracepoint. */
782 trace_actions_command (char *args, int from_tty)
784 struct tracepoint *t;
786 char *end_msg = "End with a line saying just \"end\".";
788 t = get_tracepoint_by_number (&args, 0, 1);
791 sprintf (tmpbuf, "Enter actions for tracepoint %d, one per line.",
796 if (readline_begin_hook)
797 (*readline_begin_hook) ("%s %s\n", tmpbuf, end_msg);
798 else if (input_from_terminal_p ())
799 printf_filtered ("%s\n%s\n", tmpbuf, end_msg);
803 t->step_count = 0; /* read_actions may set this */
806 if (readline_end_hook)
807 (*readline_end_hook) ();
808 /* tracepoints_changed () */
810 /* else just return */
813 /* worker function */
815 read_actions (struct tracepoint *t)
818 char *prompt1 = "> ", *prompt2 = " > ";
819 char *prompt = prompt1;
820 enum actionline_type linetype;
821 extern FILE *instream;
822 struct action_line *next = NULL, *temp;
823 struct cleanup *old_chain;
825 /* Control-C quits instantly if typed while in this loop
826 since it should not wait until the user types a newline. */
828 /* FIXME: kettenis/20010823: Something is wrong here. In this file
829 STOP_SIGNAL is never defined. So this code has been left out, at
830 least for quite a while now. Replacing STOP_SIGNAL with SIGTSTP
831 leads to compilation failures since the variable job_control
832 isn't declared. Leave this alone for now. */
837 signal (STOP_SIGNAL, handle_stop_sig);
839 signal (STOP_SIGNAL, stop_sig);
842 old_chain = make_cleanup_free_actions (t);
845 /* Make sure that all output has been output. Some machines may let
846 you get away with leaving out some of the gdb_flush, but not all. */
848 gdb_flush (gdb_stdout);
849 gdb_flush (gdb_stderr);
851 if (readline_hook && instream == NULL)
852 line = (*readline_hook) (prompt);
853 else if (instream == stdin && ISATTY (instream))
855 line = readline (prompt);
856 if (line && *line) /* add it to command history */
860 line = gdb_readline (0);
862 linetype = validate_actionline (&line, t);
863 if (linetype == BADLINE)
864 continue; /* already warned -- collect another line */
866 temp = xmalloc (sizeof (struct action_line));
870 if (next == NULL) /* first action for this tracepoint? */
871 t->actions = next = temp;
878 if (linetype == STEPPING) /* begin "while-stepping" */
880 if (prompt == prompt2)
882 warning ("Already processing 'while-stepping'");
886 prompt = prompt2; /* change prompt for stepping actions */
888 else if (linetype == END)
890 if (prompt == prompt2)
892 prompt = prompt1; /* end of single-stepping actions */
895 { /* end of actions */
896 if (t->actions->next == NULL)
898 /* an "end" all by itself with no other actions means
899 this tracepoint has no actions. Discard empty list. */
908 signal (STOP_SIGNAL, SIG_DFL);
911 discard_cleanups (old_chain);
914 /* worker function */
916 validate_actionline (char **line, struct tracepoint *t)
918 struct cmd_list_element *c;
919 struct expression *exp = NULL;
920 struct cleanup *old_chain = NULL;
923 for (p = *line; isspace ((int) *p);)
926 /* symbol lookup etc. */
927 if (*p == '\0') /* empty line: just prompt for another line. */
930 if (*p == '#') /* comment line */
933 c = lookup_cmd (&p, cmdlist, "", -1, 1);
936 warning ("'%s' is not an action that I know, or is ambiguous.", p);
940 if (c->function.cfunc == collect_pseudocommand)
942 struct agent_expr *aexpr;
943 struct agent_reqs areqs;
946 { /* repeat over a comma-separated list */
947 QUIT; /* allow user to bail out with ^C */
948 while (isspace ((int) *p))
951 if (*p == '$') /* look for special pseudo-symbols */
953 if ((0 == strncasecmp ("reg", p + 1, 3)) ||
954 (0 == strncasecmp ("arg", p + 1, 3)) ||
955 (0 == strncasecmp ("loc", p + 1, 3)))
960 /* else fall thru, treat p as an expression and parse it! */
962 exp = parse_exp_1 (&p, block_for_pc (t->address), 1);
963 old_chain = make_cleanup (free_current_contents, &exp);
965 if (exp->elts[0].opcode == OP_VAR_VALUE)
967 if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST)
969 warning ("constant %s (value %ld) will not be collected.",
970 SYMBOL_NAME (exp->elts[2].symbol),
971 SYMBOL_VALUE (exp->elts[2].symbol));
974 else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT)
976 warning ("%s is optimized away and cannot be collected.",
977 SYMBOL_NAME (exp->elts[2].symbol));
982 /* we have something to collect, make sure that the expr to
983 bytecode translator can handle it and that it's not too long */
984 aexpr = gen_trace_for_expr (t->address, exp);
985 make_cleanup_free_agent_expr (aexpr);
987 if (aexpr->len > MAX_AGENT_EXPR_LEN)
988 error ("expression too complicated, try simplifying");
990 ax_reqs (aexpr, &areqs);
991 (void) make_cleanup (xfree, areqs.reg_mask);
993 if (areqs.flaw != agent_flaw_none)
994 error ("malformed expression");
996 if (areqs.min_height < 0)
997 error ("gdb: Internal error: expression has min height < 0");
999 if (areqs.max_height > 20)
1000 error ("expression too complicated, try simplifying");
1002 do_cleanups (old_chain);
1004 while (p && *p++ == ',');
1007 else if (c->function.cfunc == while_stepping_pseudocommand)
1009 char *steparg; /* in case warning is necessary */
1011 while (isspace ((int) *p))
1016 (t->step_count = strtol (p, &p, 0)) == 0)
1018 warning ("'%s': bad step-count; command ignored.", *line);
1023 else if (c->function.cfunc == end_actions_pseudocommand)
1027 warning ("'%s' is not a supported tracepoint action.", *line);
1032 /* worker function */
1034 free_actions (struct tracepoint *t)
1036 struct action_line *line, *next;
1038 for (line = t->actions; line; line = next)
1042 xfree (line->action);
1049 do_free_actions_cleanup (void *t)
1054 static struct cleanup *
1055 make_cleanup_free_actions (struct tracepoint *t)
1057 return make_cleanup (do_free_actions_cleanup, t);
1062 int type; /* 0 for absolute memory range, else basereg number */
1063 bfd_signed_vma start;
1067 struct collection_list
1069 unsigned char regs_mask[8]; /* room for up to 256 regs */
1072 struct memrange *list;
1073 long aexpr_listsize; /* size of array pointed to by expr_list elt */
1074 long next_aexpr_elt;
1075 struct agent_expr **aexpr_list;
1078 tracepoint_list, stepping_list;
1080 /* MEMRANGE functions: */
1082 static int memrange_cmp (const void *, const void *);
1084 /* compare memranges for qsort */
1086 memrange_cmp (const void *va, const void *vb)
1088 const struct memrange *a = va, *b = vb;
1090 if (a->type < b->type)
1092 if (a->type > b->type)
1096 if ((bfd_vma) a->start < (bfd_vma) b->start)
1098 if ((bfd_vma) a->start > (bfd_vma) b->start)
1103 if (a->start < b->start)
1105 if (a->start > b->start)
1111 /* Sort the memrange list using qsort, and merge adjacent memranges */
1113 memrange_sortmerge (struct collection_list *memranges)
1117 qsort (memranges->list, memranges->next_memrange,
1118 sizeof (struct memrange), memrange_cmp);
1119 if (memranges->next_memrange > 0)
1121 for (a = 0, b = 1; b < memranges->next_memrange; b++)
1123 if (memranges->list[a].type == memranges->list[b].type &&
1124 memranges->list[b].start - memranges->list[a].end <=
1125 MAX_REGISTER_VIRTUAL_SIZE)
1127 /* memrange b starts before memrange a ends; merge them. */
1128 if (memranges->list[b].end > memranges->list[a].end)
1129 memranges->list[a].end = memranges->list[b].end;
1130 continue; /* next b, same a */
1134 memcpy (&memranges->list[a], &memranges->list[b],
1135 sizeof (struct memrange));
1137 memranges->next_memrange = a + 1;
1141 /* Add a register to a collection list */
1143 add_register (struct collection_list *collection, unsigned int regno)
1146 printf_filtered ("collect register %d\n", regno);
1147 if (regno > (8 * sizeof (collection->regs_mask)))
1148 error ("Internal: register number %d too large for tracepoint",
1150 collection->regs_mask[regno / 8] |= 1 << (regno % 8);
1153 /* Add a memrange to a collection list */
1155 add_memrange (struct collection_list *memranges, int type, bfd_signed_vma base,
1160 printf_filtered ("(%d,", type);
1162 printf_filtered (",%ld)\n", len);
1165 /* type: 0 == memory, n == basereg */
1166 memranges->list[memranges->next_memrange].type = type;
1167 /* base: addr if memory, offset if reg relative. */
1168 memranges->list[memranges->next_memrange].start = base;
1169 /* len: we actually save end (base + len) for convenience */
1170 memranges->list[memranges->next_memrange].end = base + len;
1171 memranges->next_memrange++;
1172 if (memranges->next_memrange >= memranges->listsize)
1174 memranges->listsize *= 2;
1175 memranges->list = xrealloc (memranges->list,
1176 memranges->listsize);
1179 if (type != -1) /* better collect the base register! */
1180 add_register (memranges, type);
1183 /* Add a symbol to a collection list */
1185 collect_symbol (struct collection_list *collect, struct symbol *sym,
1186 long frame_regno, long frame_offset)
1190 bfd_signed_vma offset;
1192 len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)));
1193 switch (SYMBOL_CLASS (sym))
1196 printf_filtered ("%s: don't know symbol class %d\n",
1197 SYMBOL_NAME (sym), SYMBOL_CLASS (sym));
1200 printf_filtered ("constant %s (value %ld) will not be collected.\n",
1201 SYMBOL_NAME (sym), SYMBOL_VALUE (sym));
1204 offset = SYMBOL_VALUE_ADDRESS (sym);
1209 sprintf_vma (tmp, offset);
1210 printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n",
1211 SYMBOL_NAME (sym), len, tmp /* address */);
1213 add_memrange (collect, -1, offset, len); /* 0 == memory */
1217 reg = SYMBOL_VALUE (sym);
1219 printf_filtered ("LOC_REG[parm] %s: ", SYMBOL_NAME (sym));
1220 add_register (collect, reg);
1221 /* check for doubles stored in two registers */
1222 /* FIXME: how about larger types stored in 3 or more regs? */
1223 if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
1224 len > REGISTER_RAW_SIZE (reg))
1225 add_register (collect, reg + 1);
1228 printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
1229 printf_filtered (" (will not collect %s)\n",
1234 offset = frame_offset + SYMBOL_VALUE (sym);
1237 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1238 SYMBOL_NAME (sym), len);
1239 printf_vma (offset);
1240 printf_filtered (" from frame ptr reg %d\n", reg);
1242 add_memrange (collect, reg, offset, len);
1244 case LOC_REGPARM_ADDR:
1245 reg = SYMBOL_VALUE (sym);
1249 printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ",
1250 SYMBOL_NAME (sym), len);
1251 printf_vma (offset);
1252 printf_filtered (" from reg %d\n", reg);
1254 add_memrange (collect, reg, offset, len);
1259 offset = frame_offset + SYMBOL_VALUE (sym);
1262 printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ",
1263 SYMBOL_NAME (sym), len);
1264 printf_vma (offset);
1265 printf_filtered (" from frame ptr reg %d\n", reg);
1267 add_memrange (collect, reg, offset, len);
1270 case LOC_BASEREG_ARG:
1271 reg = SYMBOL_BASEREG (sym);
1272 offset = SYMBOL_VALUE (sym);
1275 printf_filtered ("LOC_BASEREG %s: collect %ld bytes at offset ",
1276 SYMBOL_NAME (sym), len);
1277 printf_vma (offset);
1278 printf_filtered (" from basereg %d\n", reg);
1280 add_memrange (collect, reg, offset, len);
1282 case LOC_UNRESOLVED:
1283 printf_filtered ("Don't know LOC_UNRESOLVED %s\n", SYMBOL_NAME (sym));
1285 case LOC_OPTIMIZED_OUT:
1286 printf_filtered ("%s has been optimized out of existence.\n",
1292 /* Add all locals (or args) symbols to collection list */
1294 add_local_symbols (struct collection_list *collect, CORE_ADDR pc,
1295 long frame_regno, long frame_offset, int type)
1298 struct block *block;
1299 int i, nsyms, count = 0;
1301 block = block_for_pc (pc);
1304 QUIT; /* allow user to bail out with ^C */
1305 nsyms = BLOCK_NSYMS (block);
1306 for (i = 0; i < nsyms; i++)
1308 sym = BLOCK_SYM (block, i);
1309 switch (SYMBOL_CLASS (sym))
1312 warning ("don't know how to trace local symbol %s",
1318 if (type == 'L') /* collecting Locals */
1321 collect_symbol (collect, sym, frame_regno, frame_offset);
1328 case LOC_REGPARM_ADDR:
1329 case LOC_BASEREG_ARG:
1330 if (type == 'A') /* collecting Arguments */
1333 collect_symbol (collect, sym, frame_regno, frame_offset);
1337 if (BLOCK_FUNCTION (block))
1340 block = BLOCK_SUPERBLOCK (block);
1343 warning ("No %s found in scope.", type == 'L' ? "locals" : "args");
1346 /* worker function */
1348 clear_collection_list (struct collection_list *list)
1352 list->next_memrange = 0;
1353 for (ndx = 0; ndx < list->next_aexpr_elt; ndx++)
1355 free_agent_expr (list->aexpr_list[ndx]);
1356 list->aexpr_list[ndx] = NULL;
1358 list->next_aexpr_elt = 0;
1359 memset (list->regs_mask, 0, sizeof (list->regs_mask));
1362 /* reduce a collection list to string form (for gdb protocol) */
1364 stringify_collection_list (struct collection_list *list, char *string)
1366 char temp_buf[2048];
1370 char *(*str_list)[];
1374 count = 1 + list->next_memrange + list->next_aexpr_elt + 1;
1375 str_list = (char *(*)[]) xmalloc (count * sizeof (char *));
1377 for (i = sizeof (list->regs_mask) - 1; i > 0; i--)
1378 if (list->regs_mask[i] != 0) /* skip leading zeroes in regs_mask */
1380 if (list->regs_mask[i] != 0) /* prepare to send regs_mask to the stub */
1383 printf_filtered ("\nCollecting registers (mask): 0x");
1388 QUIT; /* allow user to bail out with ^C */
1390 printf_filtered ("%02X", list->regs_mask[i]);
1391 sprintf (end, "%02X", list->regs_mask[i]);
1394 (*str_list)[ndx] = savestring (temp_buf, end - temp_buf);
1398 printf_filtered ("\n");
1399 if (list->next_memrange > 0 && info_verbose)
1400 printf_filtered ("Collecting memranges: \n");
1401 for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++)
1403 QUIT; /* allow user to bail out with ^C */
1404 sprintf_vma (tmp2, list->list[i].start);
1407 printf_filtered ("(%d, %s, %ld)\n",
1410 (long) (list->list[i].end - list->list[i].start));
1412 if (count + 27 > MAX_AGENT_EXPR_LEN)
1414 (*str_list)[ndx] = savestring (temp_buf, count);
1420 sprintf (end, "M%X,%s,%lX",
1423 (long) (list->list[i].end - list->list[i].start));
1425 count += strlen (end);
1429 for (i = 0; i < list->next_aexpr_elt; i++)
1431 QUIT; /* allow user to bail out with ^C */
1432 if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN)
1434 (*str_list)[ndx] = savestring (temp_buf, count);
1439 sprintf (end, "X%08X,", list->aexpr_list[i]->len);
1440 end += 10; /* 'X' + 8 hex digits + ',' */
1443 end = mem2hex (list->aexpr_list[i]->buf, end, list->aexpr_list[i]->len);
1444 count += 2 * list->aexpr_list[i]->len;
1449 (*str_list)[ndx] = savestring (temp_buf, count);
1454 (*str_list)[ndx] = NULL;
1463 free_actions_list_cleanup_wrapper (void *al)
1465 free_actions_list (al);
1469 free_actions_list (char **actions_list)
1473 if (actions_list == 0)
1476 for (ndx = 0; actions_list[ndx]; ndx++)
1477 xfree (actions_list[ndx]);
1479 xfree (actions_list);
1482 /* render all actions into gdb protocol */
1484 encode_actions (struct tracepoint *t, char ***tdp_actions,
1485 char ***stepping_actions)
1487 static char tdp_buff[2048], step_buff[2048];
1489 struct expression *exp = NULL;
1490 struct action_line *action;
1493 struct collection_list *collect;
1494 struct cmd_list_element *cmd;
1495 struct agent_expr *aexpr;
1497 LONGEST frame_offset;
1500 clear_collection_list (&tracepoint_list);
1501 clear_collection_list (&stepping_list);
1502 collect = &tracepoint_list;
1504 *tdp_actions = NULL;
1505 *stepping_actions = NULL;
1507 TARGET_VIRTUAL_FRAME_POINTER (t->address, &frame_reg, &frame_offset);
1509 for (action = t->actions; action; action = action->next)
1511 QUIT; /* allow user to bail out with ^C */
1512 action_exp = action->action;
1513 while (isspace ((int) *action_exp))
1516 if (*action_exp == '#') /* comment line */
1519 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
1521 error ("Bad action list item: %s", action_exp);
1523 if (cmd->function.cfunc == collect_pseudocommand)
1526 { /* repeat over a comma-separated list */
1527 QUIT; /* allow user to bail out with ^C */
1528 while (isspace ((int) *action_exp))
1531 if (0 == strncasecmp ("$reg", action_exp, 4))
1533 for (i = 0; i < NUM_REGS; i++)
1534 add_register (collect, i);
1535 action_exp = strchr (action_exp, ','); /* more? */
1537 else if (0 == strncasecmp ("$arg", action_exp, 4))
1539 add_local_symbols (collect,
1544 action_exp = strchr (action_exp, ','); /* more? */
1546 else if (0 == strncasecmp ("$loc", action_exp, 4))
1548 add_local_symbols (collect,
1553 action_exp = strchr (action_exp, ','); /* more? */
1557 unsigned long addr, len;
1558 struct cleanup *old_chain = NULL;
1559 struct cleanup *old_chain1 = NULL;
1560 struct agent_reqs areqs;
1562 exp = parse_exp_1 (&action_exp,
1563 block_for_pc (t->address), 1);
1564 old_chain = make_cleanup (free_current_contents, &exp);
1566 switch (exp->elts[0].opcode)
1569 i = exp->elts[1].longconst;
1571 printf_filtered ("OP_REGISTER: ");
1572 add_register (collect, i);
1576 /* safe because we know it's a simple expression */
1577 tempval = evaluate_expression (exp);
1578 addr = VALUE_ADDRESS (tempval) + VALUE_OFFSET (tempval);
1579 len = TYPE_LENGTH (check_typedef (exp->elts[1].type));
1580 add_memrange (collect, -1, addr, len);
1584 collect_symbol (collect,
1585 exp->elts[2].symbol,
1590 default: /* full-fledged expression */
1591 aexpr = gen_trace_for_expr (t->address, exp);
1593 old_chain1 = make_cleanup_free_agent_expr (aexpr);
1595 ax_reqs (aexpr, &areqs);
1596 if (areqs.flaw != agent_flaw_none)
1597 error ("malformed expression");
1599 if (areqs.min_height < 0)
1600 error ("gdb: Internal error: expression has min height < 0");
1601 if (areqs.max_height > 20)
1602 error ("expression too complicated, try simplifying");
1604 discard_cleanups (old_chain1);
1605 add_aexpr (collect, aexpr);
1607 /* take care of the registers */
1608 if (areqs.reg_mask_len > 0)
1613 for (ndx1 = 0; ndx1 < areqs.reg_mask_len; ndx1++)
1615 QUIT; /* allow user to bail out with ^C */
1616 if (areqs.reg_mask[ndx1] != 0)
1618 /* assume chars have 8 bits */
1619 for (ndx2 = 0; ndx2 < 8; ndx2++)
1620 if (areqs.reg_mask[ndx1] & (1 << ndx2))
1621 /* it's used -- record it */
1622 add_register (collect, ndx1 * 8 + ndx2);
1628 do_cleanups (old_chain);
1631 while (action_exp && *action_exp++ == ',');
1633 else if (cmd->function.cfunc == while_stepping_pseudocommand)
1635 collect = &stepping_list;
1637 else if (cmd->function.cfunc == end_actions_pseudocommand)
1639 if (collect == &stepping_list) /* end stepping actions */
1640 collect = &tracepoint_list;
1642 break; /* end tracepoint actions */
1645 memrange_sortmerge (&tracepoint_list);
1646 memrange_sortmerge (&stepping_list);
1648 *tdp_actions = stringify_collection_list (&tracepoint_list, tdp_buff);
1649 *stepping_actions = stringify_collection_list (&stepping_list, step_buff);
1653 add_aexpr (struct collection_list *collect, struct agent_expr *aexpr)
1655 if (collect->next_aexpr_elt >= collect->aexpr_listsize)
1657 collect->aexpr_list =
1658 xrealloc (collect->aexpr_list,
1659 2 * collect->aexpr_listsize * sizeof (struct agent_expr *));
1660 collect->aexpr_listsize *= 2;
1662 collect->aexpr_list[collect->next_aexpr_elt] = aexpr;
1663 collect->next_aexpr_elt++;
1666 static char target_buf[2048];
1668 /* Set "transparent" memory ranges
1670 Allow trace mechanism to treat text-like sections
1671 (and perhaps all read-only sections) transparently,
1672 i.e. don't reject memory requests from these address ranges
1673 just because they haven't been collected. */
1676 remote_set_transparent_ranges (void)
1678 extern bfd *exec_bfd;
1685 return; /* no information to give. */
1687 strcpy (target_buf, "QTro");
1688 for (s = exec_bfd->sections; s; s = s->next)
1690 char tmp1[40], tmp2[40];
1692 if ((s->flags & SEC_LOAD) == 0 ||
1693 /* (s->flags & SEC_CODE) == 0 || */
1694 (s->flags & SEC_READONLY) == 0)
1699 size = bfd_get_section_size_before_reloc (s);
1700 sprintf_vma (tmp1, lma);
1701 sprintf_vma (tmp2, lma + size);
1702 sprintf (target_buf + strlen (target_buf),
1703 ":%s,%s", tmp1, tmp2);
1707 putpkt (target_buf);
1708 getpkt (target_buf, sizeof (target_buf), 0);
1714 Tell target to clear any previous trace experiment.
1715 Walk the list of tracepoints, and send them (and their actions)
1716 to the target. If no errors,
1717 Tell target to start a new trace experiment. */
1720 trace_start_command (char *args, int from_tty)
1721 { /* STUB_COMM MOSTLY_IMPLEMENTED */
1722 struct tracepoint *t;
1725 char **stepping_actions;
1727 struct cleanup *old_chain = NULL;
1729 dont_repeat (); /* like "run", dangerous to repeat accidentally */
1731 if (target_is_remote ())
1734 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1735 if (strcmp (target_buf, "OK"))
1736 error ("Target does not support this command.");
1742 sprintf_vma (tmp, t->address);
1743 sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number, tmp, /* address */
1744 t->enabled_p ? 'E' : 'D',
1745 t->step_count, t->pass_count);
1750 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1751 if (strcmp (target_buf, "OK"))
1752 error ("Target does not support tracepoints.");
1756 encode_actions (t, &tdp_actions, &stepping_actions);
1757 old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
1759 (void) make_cleanup (free_actions_list_cleanup_wrapper,
1762 /* do_single_steps (t); */
1765 for (ndx = 0; tdp_actions[ndx]; ndx++)
1767 QUIT; /* allow user to bail out with ^C */
1768 sprintf (buf, "QTDP:-%x:%s:%s%c",
1769 t->number, tmp, /* address */
1771 ((tdp_actions[ndx + 1] || stepping_actions)
1774 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1775 if (strcmp (target_buf, "OK"))
1776 error ("Error on target while setting tracepoints.");
1779 if (stepping_actions)
1781 for (ndx = 0; stepping_actions[ndx]; ndx++)
1783 QUIT; /* allow user to bail out with ^C */
1784 sprintf (buf, "QTDP:-%x:%s:%s%s%s",
1785 t->number, tmp, /* address */
1786 ((ndx == 0) ? "S" : ""),
1787 stepping_actions[ndx],
1788 (stepping_actions[ndx + 1] ? "-" : ""));
1790 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1791 if (strcmp (target_buf, "OK"))
1792 error ("Error on target while setting tracepoints.");
1796 do_cleanups (old_chain);
1799 /* Tell target to treat text-like sections as transparent */
1800 remote_set_transparent_ranges ();
1801 /* Now insert traps and begin collecting data */
1803 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1804 if (strcmp (target_buf, "OK"))
1805 error ("Bogus reply from target: %s", target_buf);
1806 set_traceframe_num (-1); /* all old traceframes invalidated */
1807 set_tracepoint_num (-1);
1808 set_traceframe_context (-1);
1809 trace_running_p = 1;
1810 if (trace_start_stop_hook)
1811 trace_start_stop_hook (1, from_tty);
1815 error ("Trace can only be run on remote targets.");
1820 trace_stop_command (char *args, int from_tty)
1821 { /* STUB_COMM IS_IMPLEMENTED */
1822 if (target_is_remote ())
1825 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1826 if (strcmp (target_buf, "OK"))
1827 error ("Bogus reply from target: %s", target_buf);
1828 trace_running_p = 0;
1829 if (trace_start_stop_hook)
1830 trace_start_stop_hook (0, from_tty);
1833 error ("Trace can only be run on remote targets.");
1836 unsigned long trace_running_p;
1838 /* tstatus command */
1840 trace_status_command (char *args, int from_tty)
1841 { /* STUB_COMM IS_IMPLEMENTED */
1842 if (target_is_remote ())
1844 putpkt ("qTStatus");
1845 remote_get_noisy_reply (target_buf, sizeof (target_buf));
1847 if (target_buf[0] != 'T' ||
1848 (target_buf[1] != '0' && target_buf[1] != '1'))
1849 error ("Bogus reply from target: %s", target_buf);
1851 /* exported for use by the GUI */
1852 trace_running_p = (target_buf[1] == '1');
1855 error ("Trace can only be run on remote targets.");
1858 /* Worker function for the various flavors of the tfind command */
1860 finish_tfind_command (char *msg,
1864 int target_frameno = -1, target_tracept = -1;
1865 CORE_ADDR old_frame_addr;
1866 struct symbol *old_func;
1869 old_frame_addr = FRAME_FP (get_current_frame ());
1870 old_func = find_pc_function (read_pc ());
1873 reply = remote_get_noisy_reply (msg, sizeof_msg);
1875 while (reply && *reply)
1879 if ((target_frameno = (int) strtol (++reply, &reply, 16)) == -1)
1881 /* A request for a non-existant trace frame has failed.
1882 Our response will be different, depending on FROM_TTY:
1884 If FROM_TTY is true, meaning that this command was
1885 typed interactively by the user, then give an error
1886 and DO NOT change the state of traceframe_number etc.
1888 However if FROM_TTY is false, meaning that we're either
1889 in a script, a loop, or a user-defined command, then
1890 DON'T give an error, but DO change the state of
1891 traceframe_number etc. to invalid.
1893 The rationalle is that if you typed the command, you
1894 might just have committed a typo or something, and you'd
1895 like to NOT lose your current debugging state. However
1896 if you're in a user-defined command or especially in a
1897 loop, then you need a way to detect that the command
1898 failed WITHOUT aborting. This allows you to write
1899 scripts that search thru the trace buffer until the end,
1900 and then continue on to do something else. */
1903 error ("Target failed to find requested trace frame.");
1907 printf_filtered ("End of trace buffer.\n");
1908 /* The following will not recurse, since it's special-cased */
1909 trace_find_command ("-1", from_tty);
1910 reply = NULL; /* break out of loop,
1911 (avoid recursive nonsense) */
1916 if ((target_tracept = (int) strtol (++reply, &reply, 16)) == -1)
1917 error ("Target failed to find requested trace frame.");
1919 case 'O': /* "OK"? */
1920 if (reply[1] == 'K' && reply[2] == '\0')
1923 error ("Bogus reply from target: %s", reply);
1926 error ("Bogus reply from target: %s", reply);
1929 flush_cached_frames ();
1930 registers_changed ();
1931 select_frame (get_current_frame (), 0);
1932 set_traceframe_num (target_frameno);
1933 set_tracepoint_num (target_tracept);
1934 if (target_frameno == -1)
1935 set_traceframe_context (-1);
1937 set_traceframe_context (read_pc ());
1943 /* NOTE: in immitation of the step command, try to determine
1944 whether we have made a transition from one function to another.
1945 If so, we'll print the "stack frame" (ie. the new function and
1946 it's arguments) -- otherwise we'll just show the new source line.
1948 This determination is made by checking (1) whether the current
1949 function has changed, and (2) whether the current FP has changed.
1950 Hack: if the FP wasn't collected, either at the current or the
1951 previous frame, assume that the FP has NOT changed. */
1953 if (old_func == find_pc_function (read_pc ()) &&
1954 (old_frame_addr == 0 ||
1955 FRAME_FP (get_current_frame ()) == 0 ||
1956 old_frame_addr == FRAME_FP (get_current_frame ())))
1961 print_stack_frame (selected_frame, selected_frame_level, source_only);
1966 /* trace_find_command takes a trace frame number n,
1967 sends "QTFrame:<n>" to the target,
1968 and accepts a reply that may contain several optional pieces
1969 of information: a frame number, a tracepoint number, and an
1970 indication of whether this is a trap frame or a stepping frame.
1972 The minimal response is just "OK" (which indicates that the
1973 target does not give us a frame number or a tracepoint number).
1974 Instead of that, the target may send us a string containing
1976 F<hexnum> (gives the selected frame number)
1977 T<hexnum> (gives the selected tracepoint number)
1982 trace_find_command (char *args, int from_tty)
1983 { /* STUB_COMM PART_IMPLEMENTED */
1984 /* this should only be called with a numeric argument */
1987 if (target_is_remote ())
1989 if (trace_find_hook)
1990 trace_find_hook (args, from_tty);
1992 if (args == 0 || *args == 0)
1993 { /* TFIND with no args means find NEXT trace frame. */
1994 if (traceframe_number == -1)
1995 frameno = 0; /* "next" is first one */
1997 frameno = traceframe_number + 1;
1999 else if (0 == strcmp (args, "-"))
2001 if (traceframe_number == -1)
2002 error ("not debugging trace buffer");
2003 else if (from_tty && traceframe_number == 0)
2004 error ("already at start of trace buffer");
2006 frameno = traceframe_number - 1;
2009 frameno = parse_and_eval_long (args);
2012 error ("invalid input (%d is less than zero)", frameno);
2014 sprintf (target_buf, "QTFrame:%x", frameno);
2015 finish_tfind_command (target_buf, sizeof (target_buf), from_tty);
2018 error ("Trace can only be run on remote targets.");
2023 trace_find_end_command (char *args, int from_tty)
2025 trace_find_command ("-1", from_tty);
2030 trace_find_none_command (char *args, int from_tty)
2032 trace_find_command ("-1", from_tty);
2037 trace_find_start_command (char *args, int from_tty)
2039 trace_find_command ("0", from_tty);
2042 /* tfind pc command */
2044 trace_find_pc_command (char *args, int from_tty)
2045 { /* STUB_COMM PART_IMPLEMENTED */
2049 if (target_is_remote ())
2051 if (args == 0 || *args == 0)
2052 pc = read_pc (); /* default is current pc */
2054 pc = parse_and_eval_address (args);
2056 sprintf_vma (tmp, pc);
2057 sprintf (target_buf, "QTFrame:pc:%s", tmp);
2058 finish_tfind_command (target_buf, sizeof (target_buf), from_tty);
2061 error ("Trace can only be run on remote targets.");
2064 /* tfind tracepoint command */
2066 trace_find_tracepoint_command (char *args, int from_tty)
2067 { /* STUB_COMM PART_IMPLEMENTED */
2070 if (target_is_remote ())
2072 if (args == 0 || *args == 0)
2073 if (tracepoint_number == -1)
2074 error ("No current tracepoint -- please supply an argument.");
2076 tdp = tracepoint_number; /* default is current TDP */
2078 tdp = parse_and_eval_long (args);
2080 sprintf (target_buf, "QTFrame:tdp:%x", tdp);
2081 finish_tfind_command (target_buf, sizeof (target_buf), from_tty);
2084 error ("Trace can only be run on remote targets.");
2087 /* TFIND LINE command:
2089 This command will take a sourceline for argument, just like BREAK
2090 or TRACE (ie. anything that "decode_line_1" can handle).
2092 With no argument, this command will find the next trace frame
2093 corresponding to a source line OTHER THAN THE CURRENT ONE. */
2096 trace_find_line_command (char *args, int from_tty)
2097 { /* STUB_COMM PART_IMPLEMENTED */
2098 static CORE_ADDR start_pc, end_pc;
2099 struct symtabs_and_lines sals;
2100 struct symtab_and_line sal;
2101 struct cleanup *old_chain;
2102 char startpc_str[40], endpc_str[40];
2104 if (target_is_remote ())
2106 if (args == 0 || *args == 0)
2108 sal = find_pc_line ((get_current_frame ())->pc, 0);
2110 sals.sals = (struct symtab_and_line *)
2111 xmalloc (sizeof (struct symtab_and_line));
2116 sals = decode_line_spec (args, 1);
2120 old_chain = make_cleanup (xfree, sals.sals);
2121 if (sal.symtab == 0)
2123 printf_filtered ("TFIND: No line number information available");
2126 /* This is useful for "info line *0x7f34". If we can't tell the
2127 user about a source line, at least let them have the symbolic
2129 printf_filtered (" for address ");
2131 print_address (sal.pc, gdb_stdout);
2132 printf_filtered (";\n -- will attempt to find by PC. \n");
2136 printf_filtered (".\n");
2137 return; /* no line, no PC; what can we do? */
2140 else if (sal.line > 0
2141 && find_line_pc_range (sal, &start_pc, &end_pc))
2143 if (start_pc == end_pc)
2145 printf_filtered ("Line %d of \"%s\"",
2146 sal.line, sal.symtab->filename);
2148 printf_filtered (" is at address ");
2149 print_address (start_pc, gdb_stdout);
2151 printf_filtered (" but contains no code.\n");
2152 sal = find_pc_line (start_pc, 0);
2154 find_line_pc_range (sal, &start_pc, &end_pc) &&
2156 printf_filtered ("Attempting to find line %d instead.\n",
2159 error ("Cannot find a good line.");
2163 /* Is there any case in which we get here, and have an address
2164 which the user would want to see? If we have debugging symbols
2165 and no line numbers? */
2166 error ("Line number %d is out of range for \"%s\".\n",
2167 sal.line, sal.symtab->filename);
2169 sprintf_vma (startpc_str, start_pc);
2170 sprintf_vma (endpc_str, end_pc - 1);
2171 if (args && *args) /* find within range of stated line */
2172 sprintf (target_buf, "QTFrame:range:%s:%s", startpc_str, endpc_str);
2173 else /* find OUTSIDE OF range of CURRENT line */
2174 sprintf (target_buf, "QTFrame:outside:%s:%s", startpc_str, endpc_str);
2175 finish_tfind_command (target_buf, sizeof (target_buf), from_tty);
2176 do_cleanups (old_chain);
2179 error ("Trace can only be run on remote targets.");
2182 /* tfind range command */
2184 trace_find_range_command (char *args, int from_tty)
2186 static CORE_ADDR start, stop;
2187 char start_str[40], stop_str[40];
2190 if (target_is_remote ())
2192 if (args == 0 || *args == 0)
2193 { /* XXX FIXME: what should default behavior be? */
2194 printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n");
2198 if (0 != (tmp = strchr (args, ',')))
2200 *tmp++ = '\0'; /* terminate start address */
2201 while (isspace ((int) *tmp))
2203 start = parse_and_eval_address (args);
2204 stop = parse_and_eval_address (tmp);
2207 { /* no explicit end address? */
2208 start = parse_and_eval_address (args);
2209 stop = start + 1; /* ??? */
2212 sprintf_vma (start_str, start);
2213 sprintf_vma (stop_str, stop);
2214 sprintf (target_buf, "QTFrame:range:%s:%s", start_str, stop_str);
2215 finish_tfind_command (target_buf, sizeof (target_buf), from_tty);
2218 error ("Trace can only be run on remote targets.");
2221 /* tfind outside command */
2223 trace_find_outside_command (char *args, int from_tty)
2225 CORE_ADDR start, stop;
2226 char start_str[40], stop_str[40];
2229 if (target_is_remote ())
2231 if (args == 0 || *args == 0)
2232 { /* XXX FIXME: what should default behavior be? */
2233 printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n");
2237 if (0 != (tmp = strchr (args, ',')))
2239 *tmp++ = '\0'; /* terminate start address */
2240 while (isspace ((int) *tmp))
2242 start = parse_and_eval_address (args);
2243 stop = parse_and_eval_address (tmp);
2246 { /* no explicit end address? */
2247 start = parse_and_eval_address (args);
2248 stop = start + 1; /* ??? */
2251 sprintf_vma (start_str, start);
2252 sprintf_vma (stop_str, stop);
2253 sprintf (target_buf, "QTFrame:outside:%s:%s", start_str, stop_str);
2254 finish_tfind_command (target_buf, sizeof (target_buf), from_tty);
2257 error ("Trace can only be run on remote targets.");
2260 /* save-tracepoints command */
2262 tracepoint_save_command (char *args, int from_tty)
2264 struct tracepoint *tp;
2265 struct action_line *line;
2267 char *i1 = " ", *i2 = " ";
2268 char *indent, *actionline;
2271 if (args == 0 || *args == 0)
2272 error ("Argument required (file name in which to save tracepoints");
2274 if (tracepoint_chain == 0)
2276 warning ("save-tracepoints: no tracepoints to save.\n");
2280 if (!(fp = fopen (args, "w")))
2281 error ("Unable to open file '%s' for saving tracepoints");
2283 ALL_TRACEPOINTS (tp)
2285 if (tp->addr_string)
2286 fprintf (fp, "trace %s\n", tp->addr_string);
2289 sprintf_vma (tmp, tp->address);
2290 fprintf (fp, "trace *0x%s\n", tmp);
2294 fprintf (fp, " passcount %d\n", tp->pass_count);
2298 fprintf (fp, " actions\n");
2300 for (line = tp->actions; line; line = line->next)
2302 struct cmd_list_element *cmd;
2304 QUIT; /* allow user to bail out with ^C */
2305 actionline = line->action;
2306 while (isspace ((int) *actionline))
2309 fprintf (fp, "%s%s\n", indent, actionline);
2310 if (*actionline != '#') /* skip for comment lines */
2312 cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1);
2314 error ("Bad action list item: %s", actionline);
2315 if (cmd->function.cfunc == while_stepping_pseudocommand)
2317 else if (cmd->function.cfunc == end_actions_pseudocommand)
2325 printf_filtered ("Tracepoints saved to file '%s'.\n", args);
2329 /* info scope command: list the locals for a scope. */
2331 scope_info (char *args, int from_tty)
2333 struct symtabs_and_lines sals;
2335 struct minimal_symbol *msym;
2336 struct block *block;
2337 char **canonical, *symname, *save_args = args;
2338 int i, j, nsyms, count = 0;
2340 if (args == 0 || *args == 0)
2341 error ("requires an argument (function, line or *addr) to define a scope");
2343 sals = decode_line_1 (&args, 1, NULL, 0, &canonical);
2344 if (sals.nelts == 0)
2345 return; /* presumably decode_line_1 has already warned */
2347 /* Resolve line numbers to PC */
2348 resolve_sal_pc (&sals.sals[0]);
2349 block = block_for_pc (sals.sals[0].pc);
2353 QUIT; /* allow user to bail out with ^C */
2354 nsyms = BLOCK_NSYMS (block);
2355 for (i = 0; i < nsyms; i++)
2357 QUIT; /* allow user to bail out with ^C */
2359 printf_filtered ("Scope for %s:\n", save_args);
2361 sym = BLOCK_SYM (block, i);
2362 symname = SYMBOL_NAME (sym);
2363 if (symname == NULL || *symname == '\0')
2364 continue; /* probably botched, certainly useless */
2366 printf_filtered ("Symbol %s is ", symname);
2367 switch (SYMBOL_CLASS (sym))
2370 case LOC_UNDEF: /* messed up symbol? */
2371 printf_filtered ("a bogus symbol, class %d.\n",
2372 SYMBOL_CLASS (sym));
2373 count--; /* don't count this one */
2376 printf_filtered ("a constant with value %ld (0x%lx)",
2377 SYMBOL_VALUE (sym), SYMBOL_VALUE (sym));
2379 case LOC_CONST_BYTES:
2380 printf_filtered ("constant bytes: ");
2381 if (SYMBOL_TYPE (sym))
2382 for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++)
2383 fprintf_filtered (gdb_stdout, " %02x",
2384 (unsigned) SYMBOL_VALUE_BYTES (sym)[j]);
2387 printf_filtered ("in static storage at address ");
2388 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, gdb_stdout);
2391 printf_filtered ("a local variable in register $%s",
2392 REGISTER_NAME (SYMBOL_VALUE (sym)));
2396 printf_filtered ("an argument at stack/frame offset %ld",
2397 SYMBOL_VALUE (sym));
2400 printf_filtered ("a local variable at frame offset %ld",
2401 SYMBOL_VALUE (sym));
2404 printf_filtered ("a reference argument at offset %ld",
2405 SYMBOL_VALUE (sym));
2408 printf_filtered ("an argument in register $%s",
2409 REGISTER_NAME (SYMBOL_VALUE (sym)));
2411 case LOC_REGPARM_ADDR:
2412 printf_filtered ("the address of an argument, in register $%s",
2413 REGISTER_NAME (SYMBOL_VALUE (sym)));
2416 printf_filtered ("a typedef.\n");
2419 printf_filtered ("a label at address ");
2420 print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, gdb_stdout);
2423 printf_filtered ("a function at address ");
2424 print_address_numeric (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), 1,
2428 printf_filtered ("a variable at offset %ld from register $%s",
2430 REGISTER_NAME (SYMBOL_BASEREG (sym)));
2432 case LOC_BASEREG_ARG:
2433 printf_filtered ("an argument at offset %ld from register $%s",
2435 REGISTER_NAME (SYMBOL_BASEREG (sym)));
2437 case LOC_UNRESOLVED:
2438 msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL);
2440 printf_filtered ("Unresolved Static");
2443 printf_filtered ("static storage at address ");
2444 print_address_numeric (SYMBOL_VALUE_ADDRESS (msym), 1,
2448 case LOC_OPTIMIZED_OUT:
2449 printf_filtered ("optimized out.\n");
2452 if (SYMBOL_TYPE (sym))
2453 printf_filtered (", length %d.\n",
2454 TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))));
2456 if (BLOCK_FUNCTION (block))
2459 block = BLOCK_SUPERBLOCK (block);
2462 printf_filtered ("Scope for %s contains no locals or arguments.\n",
2466 /* worker function (cleanup) */
2468 replace_comma (void *data)
2476 trace_dump_command (char *args, int from_tty)
2478 struct tracepoint *t;
2479 struct action_line *action;
2480 char *action_exp, *next_comma;
2481 struct cleanup *old_cleanups;
2482 int stepping_actions = 0;
2483 int stepping_frame = 0;
2485 if (!target_is_remote ())
2487 error ("Trace can only be run on remote targets.");
2491 if (tracepoint_number == -1)
2493 warning ("No current trace frame.");
2498 if (t->number == tracepoint_number)
2502 error ("No known tracepoint matches 'current' tracepoint #%d.",
2505 old_cleanups = make_cleanup (null_cleanup, NULL);
2507 printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n",
2508 tracepoint_number, traceframe_number);
2510 /* The current frame is a trap frame if the frame PC is equal
2511 to the tracepoint PC. If not, then the current frame was
2512 collected during single-stepping. */
2514 stepping_frame = (t->address != read_pc ());
2516 for (action = t->actions; action; action = action->next)
2518 struct cmd_list_element *cmd;
2520 QUIT; /* allow user to bail out with ^C */
2521 action_exp = action->action;
2522 while (isspace ((int) *action_exp))
2525 /* The collection actions to be done while stepping are
2526 bracketed by the commands "while-stepping" and "end". */
2528 if (*action_exp == '#') /* comment line */
2531 cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1);
2533 error ("Bad action list item: %s", action_exp);
2535 if (cmd->function.cfunc == while_stepping_pseudocommand)
2536 stepping_actions = 1;
2537 else if (cmd->function.cfunc == end_actions_pseudocommand)
2538 stepping_actions = 0;
2539 else if (cmd->function.cfunc == collect_pseudocommand)
2541 /* Display the collected data.
2542 For the trap frame, display only what was collected at the trap.
2543 Likewise for stepping frames, display only what was collected
2544 while stepping. This means that the two boolean variables,
2545 STEPPING_FRAME and STEPPING_ACTIONS should be equal. */
2546 if (stepping_frame == stepping_actions)
2549 { /* repeat over a comma-separated list */
2550 QUIT; /* allow user to bail out with ^C */
2551 if (*action_exp == ',')
2553 while (isspace ((int) *action_exp))
2556 next_comma = strchr (action_exp, ',');
2558 if (0 == strncasecmp (action_exp, "$reg", 4))
2559 registers_info (NULL, from_tty);
2560 else if (0 == strncasecmp (action_exp, "$loc", 4))
2561 locals_info (NULL, from_tty);
2562 else if (0 == strncasecmp (action_exp, "$arg", 4))
2563 args_info (NULL, from_tty);
2568 make_cleanup (replace_comma, next_comma);
2571 printf_filtered ("%s = ", action_exp);
2572 output_command (action_exp, from_tty);
2573 printf_filtered ("\n");
2577 action_exp = next_comma;
2579 while (action_exp && *action_exp == ',');
2583 discard_cleanups (old_cleanups);
2586 /* Convert the memory pointed to by mem into hex, placing result in buf.
2587 * Return a pointer to the last char put in buf (null)
2588 * "stolen" from sparc-stub.c
2591 static const char hexchars[] = "0123456789abcdef";
2593 static unsigned char *
2594 mem2hex (unsigned char *mem, unsigned char *buf, int count)
2602 *buf++ = hexchars[ch >> 4];
2603 *buf++ = hexchars[ch & 0xf];
2612 get_traceframe_number (void)
2614 return traceframe_number;
2618 /* module initialization */
2620 _initialize_tracepoint (void)
2622 struct cmd_list_element *c;
2624 tracepoint_chain = 0;
2625 tracepoint_count = 0;
2626 traceframe_number = -1;
2627 tracepoint_number = -1;
2629 set_internalvar (lookup_internalvar ("tpnum"),
2630 value_from_longest (builtin_type_int, (LONGEST) 0));
2631 set_internalvar (lookup_internalvar ("trace_frame"),
2632 value_from_longest (builtin_type_int, (LONGEST) - 1));
2634 if (tracepoint_list.list == NULL)
2636 tracepoint_list.listsize = 128;
2637 tracepoint_list.list = xmalloc
2638 (tracepoint_list.listsize * sizeof (struct memrange));
2640 if (tracepoint_list.aexpr_list == NULL)
2642 tracepoint_list.aexpr_listsize = 128;
2643 tracepoint_list.aexpr_list = xmalloc
2644 (tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *));
2647 if (stepping_list.list == NULL)
2649 stepping_list.listsize = 128;
2650 stepping_list.list = xmalloc
2651 (stepping_list.listsize * sizeof (struct memrange));
2654 if (stepping_list.aexpr_list == NULL)
2656 stepping_list.aexpr_listsize = 128;
2657 stepping_list.aexpr_list = xmalloc
2658 (stepping_list.aexpr_listsize * sizeof (struct agent_expr *));
2661 add_info ("scope", scope_info,
2662 "List the variables local to a scope");
2664 add_cmd ("tracepoints", class_trace, NO_FUNCTION,
2665 "Tracing of program execution without stopping the program.",
2668 add_info ("tracepoints", tracepoints_info,
2669 "Status of tracepoints, or tracepoint number NUMBER.\n\
2670 Convenience variable \"$tpnum\" contains the number of the\n\
2671 last tracepoint set.");
2673 add_info_alias ("tp", "tracepoints", 1);
2675 c = add_com ("save-tracepoints", class_trace, tracepoint_save_command,
2676 "Save current tracepoint definitions as a script.\n\
2677 Use the 'source' command in another debug session to restore them.");
2678 c->completer = filename_completer;
2680 add_com ("tdump", class_trace, trace_dump_command,
2681 "Print everything collected at the current tracepoint.");
2683 add_prefix_cmd ("tfind", class_trace, trace_find_command,
2684 "Select a trace frame;\n\
2685 No argument means forward by one frame; '-' meand backward by one frame.",
2686 &tfindlist, "tfind ", 1, &cmdlist);
2688 add_cmd ("outside", class_trace, trace_find_outside_command,
2689 "Select a trace frame whose PC is outside the given \
2690 range.\nUsage: tfind outside addr1, addr2",
2693 add_cmd ("range", class_trace, trace_find_range_command,
2694 "Select a trace frame whose PC is in the given range.\n\
2695 Usage: tfind range addr1,addr2",
2698 add_cmd ("line", class_trace, trace_find_line_command,
2699 "Select a trace frame by source line.\n\
2700 Argument can be a line number (with optional source file), \n\
2701 a function name, or '*' followed by an address.\n\
2702 Default argument is 'the next source line that was traced'.",
2705 add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command,
2706 "Select a trace frame by tracepoint number.\n\
2707 Default is the tracepoint for the current trace frame.",
2710 add_cmd ("pc", class_trace, trace_find_pc_command,
2711 "Select a trace frame by PC.\n\
2712 Default is the current PC, or the PC of the current trace frame.",
2715 add_cmd ("end", class_trace, trace_find_end_command,
2716 "Synonym for 'none'.\n\
2717 De-select any trace frame and resume 'live' debugging.",
2720 add_cmd ("none", class_trace, trace_find_none_command,
2721 "De-select any trace frame and resume 'live' debugging.",
2724 add_cmd ("start", class_trace, trace_find_start_command,
2725 "Select the first trace frame in the trace buffer.",
2728 add_com ("tstatus", class_trace, trace_status_command,
2729 "Display the status of the current trace data collection.");
2731 add_com ("tstop", class_trace, trace_stop_command,
2732 "Stop trace data collection.");
2734 add_com ("tstart", class_trace, trace_start_command,
2735 "Start trace data collection.");
2737 add_com ("passcount", class_trace, trace_pass_command,
2738 "Set the passcount for a tracepoint.\n\
2739 The trace will end when the tracepoint has been passed 'count' times.\n\
2740 Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\
2741 if TPNUM is omitted, passcount refers to the last tracepoint defined.");
2743 add_com ("end", class_trace, end_actions_pseudocommand,
2744 "Ends a list of commands or actions.\n\
2745 Several GDB commands allow you to enter a list of commands or actions.\n\
2746 Entering \"end\" on a line by itself is the normal way to terminate\n\
2748 Note: the \"end\" command cannot be used at the gdb prompt.");
2750 add_com ("while-stepping", class_trace, while_stepping_pseudocommand,
2751 "Specify single-stepping behavior at a tracepoint.\n\
2752 Argument is number of instructions to trace in single-step mode\n\
2753 following the tracepoint. This command is normally followed by\n\
2754 one or more \"collect\" commands, to specify what to collect\n\
2755 while single-stepping.\n\n\
2756 Note: this command can only be used in a tracepoint \"actions\" list.");
2758 add_com_alias ("ws", "while-stepping", class_alias, 0);
2759 add_com_alias ("stepping", "while-stepping", class_alias, 0);
2761 add_com ("collect", class_trace, collect_pseudocommand,
2762 "Specify one or more data items to be collected at a tracepoint.\n\
2763 Accepts a comma-separated list of (one or more) expressions. GDB will\n\
2764 collect all data (variables, registers) referenced by that expression.\n\
2765 Also accepts the following special arguments:\n\
2766 $regs -- all registers.\n\
2767 $args -- all function arguments.\n\
2768 $locals -- all variables local to the block/function scope.\n\
2769 Note: this command can only be used in a tracepoint \"actions\" list.");
2771 add_com ("actions", class_trace, trace_actions_command,
2772 "Specify the actions to be taken at a tracepoint.\n\
2773 Tracepoint actions may include collecting of specified data, \n\
2774 single-stepping, or enabling/disabling other tracepoints, \n\
2775 depending on target's capabilities.");
2777 add_cmd ("tracepoints", class_trace, delete_trace_command,
2778 "Delete specified tracepoints.\n\
2779 Arguments are tracepoint numbers, separated by spaces.\n\
2780 No argument means delete all tracepoints.",
2783 add_cmd ("tracepoints", class_trace, disable_trace_command,
2784 "Disable specified tracepoints.\n\
2785 Arguments are tracepoint numbers, separated by spaces.\n\
2786 No argument means disable all tracepoints.",
2789 add_cmd ("tracepoints", class_trace, enable_trace_command,
2790 "Enable specified tracepoints.\n\
2791 Arguments are tracepoint numbers, separated by spaces.\n\
2792 No argument means enable all tracepoints.",
2795 c = add_com ("trace", class_trace, trace_command,
2796 "Set a tracepoint at a specified line or function or address.\n\
2797 Argument may be a line number, function name, or '*' plus an address.\n\
2798 For a line number or function, trace at the start of its code.\n\
2799 If an address is specified, trace at that exact address.\n\n\
2800 Do \"help tracepoints\" for info on other tracepoint commands.");
2801 c->completer = location_completer;
2803 add_com_alias ("tp", "trace", class_alias, 0);
2804 add_com_alias ("tr", "trace", class_alias, 1);
2805 add_com_alias ("tra", "trace", class_alias, 1);
2806 add_com_alias ("trac", "trace", class_alias, 1);