| 1 | /* Tracing functionality for remote targets in custom GDB protocol |
| 2 | |
| 3 | Copyright (C) 1997-2013 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "arch-utils.h" |
| 22 | #include "symtab.h" |
| 23 | #include "frame.h" |
| 24 | #include "gdbtypes.h" |
| 25 | #include "expression.h" |
| 26 | #include "gdbcmd.h" |
| 27 | #include "value.h" |
| 28 | #include "target.h" |
| 29 | #include "language.h" |
| 30 | #include "gdb_string.h" |
| 31 | #include "inferior.h" |
| 32 | #include "breakpoint.h" |
| 33 | #include "tracepoint.h" |
| 34 | #include "linespec.h" |
| 35 | #include "regcache.h" |
| 36 | #include "completer.h" |
| 37 | #include "block.h" |
| 38 | #include "dictionary.h" |
| 39 | #include "observer.h" |
| 40 | #include "user-regs.h" |
| 41 | #include "valprint.h" |
| 42 | #include "gdbcore.h" |
| 43 | #include "objfiles.h" |
| 44 | #include "filenames.h" |
| 45 | #include "gdbthread.h" |
| 46 | #include "stack.h" |
| 47 | #include "gdbcore.h" |
| 48 | #include "remote.h" |
| 49 | #include "source.h" |
| 50 | #include "ax.h" |
| 51 | #include "ax-gdb.h" |
| 52 | #include "memrange.h" |
| 53 | #include "exceptions.h" |
| 54 | #include "cli/cli-utils.h" |
| 55 | #include "probe.h" |
| 56 | |
| 57 | /* readline include files */ |
| 58 | #include "readline/readline.h" |
| 59 | #include "readline/history.h" |
| 60 | |
| 61 | /* readline defines this. */ |
| 62 | #undef savestring |
| 63 | |
| 64 | #ifdef HAVE_UNISTD_H |
| 65 | #include <unistd.h> |
| 66 | #endif |
| 67 | |
| 68 | #ifndef O_LARGEFILE |
| 69 | #define O_LARGEFILE 0 |
| 70 | #endif |
| 71 | |
| 72 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
| 73 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
| 74 | |
| 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 |
| 79 | continuation packet. |
| 80 | |
| 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 |
| 84 | |
| 85 | #define TFILE_PID (1) |
| 86 | |
| 87 | /* A hook used to notify the UI of tracepoint operations. */ |
| 88 | |
| 89 | void (*deprecated_trace_find_hook) (char *arg, int from_tty); |
| 90 | void (*deprecated_trace_start_stop_hook) (int start, int from_tty); |
| 91 | |
| 92 | extern void (*deprecated_readline_begin_hook) (char *, ...); |
| 93 | extern char *(*deprecated_readline_hook) (char *); |
| 94 | extern void (*deprecated_readline_end_hook) (void); |
| 95 | |
| 96 | /* |
| 97 | Tracepoint.c: |
| 98 | |
| 99 | This module defines the following debugger commands: |
| 100 | trace : set a tracepoint on a function, line, or address. |
| 101 | info trace : list all debugger-defined tracepoints. |
| 102 | delete trace : delete one or more tracepoints. |
| 103 | enable trace : enable one or more tracepoints. |
| 104 | disable trace : disable one or more tracepoints. |
| 105 | actions : specify actions to be taken at a tracepoint. |
| 106 | passcount : specify a pass count for a tracepoint. |
| 107 | tstart : start a trace experiment. |
| 108 | tstop : stop a trace experiment. |
| 109 | tstatus : query the status of a trace experiment. |
| 110 | tfind : find a trace frame in the trace buffer. |
| 111 | tdump : print everything collected at the current tracepoint. |
| 112 | save-tracepoints : write tracepoint setup into a file. |
| 113 | |
| 114 | This module defines the following user-visible debugger variables: |
| 115 | $trace_frame : sequence number of trace frame currently being debugged. |
| 116 | $trace_line : source line of trace frame currently being debugged. |
| 117 | $trace_file : source file of trace frame currently being debugged. |
| 118 | $tracepoint : tracepoint number of trace frame currently being debugged. |
| 119 | */ |
| 120 | |
| 121 | |
| 122 | /* ======= Important global variables: ======= */ |
| 123 | |
| 124 | /* The list of all trace state variables. We don't retain pointers to |
| 125 | any of these for any reason - API is by name or number only - so it |
| 126 | works to have a vector of objects. */ |
| 127 | |
| 128 | typedef struct trace_state_variable tsv_s; |
| 129 | DEF_VEC_O(tsv_s); |
| 130 | |
| 131 | /* An object describing the contents of a traceframe. */ |
| 132 | |
| 133 | struct traceframe_info |
| 134 | { |
| 135 | /* Collected memory. */ |
| 136 | VEC(mem_range_s) *memory; |
| 137 | }; |
| 138 | |
| 139 | static VEC(tsv_s) *tvariables; |
| 140 | |
| 141 | /* The next integer to assign to a variable. */ |
| 142 | |
| 143 | static int next_tsv_number = 1; |
| 144 | |
| 145 | /* Number of last traceframe collected. */ |
| 146 | static int traceframe_number; |
| 147 | |
| 148 | /* Tracepoint for last traceframe collected. */ |
| 149 | static int tracepoint_number; |
| 150 | |
| 151 | /* Symbol for function for last traceframe collected. */ |
| 152 | static struct symbol *traceframe_fun; |
| 153 | |
| 154 | /* Symtab and line for last traceframe collected. */ |
| 155 | static struct symtab_and_line traceframe_sal; |
| 156 | |
| 157 | /* The traceframe info of the current traceframe. NULL if we haven't |
| 158 | yet attempted to fetch it, or if the target does not support |
| 159 | fetching this object, or if we're not inspecting a traceframe |
| 160 | presently. */ |
| 161 | static struct traceframe_info *traceframe_info; |
| 162 | |
| 163 | /* Tracing command lists. */ |
| 164 | static struct cmd_list_element *tfindlist; |
| 165 | |
| 166 | /* List of expressions to collect by default at each tracepoint hit. */ |
| 167 | char *default_collect = ""; |
| 168 | |
| 169 | static int disconnected_tracing; |
| 170 | |
| 171 | /* This variable controls whether we ask the target for a linear or |
| 172 | circular trace buffer. */ |
| 173 | |
| 174 | static int circular_trace_buffer; |
| 175 | |
| 176 | /* Textual notes applying to the current and/or future trace runs. */ |
| 177 | |
| 178 | char *trace_user = NULL; |
| 179 | |
| 180 | /* Textual notes applying to the current and/or future trace runs. */ |
| 181 | |
| 182 | char *trace_notes = NULL; |
| 183 | |
| 184 | /* Textual notes applying to the stopping of a trace. */ |
| 185 | |
| 186 | char *trace_stop_notes = NULL; |
| 187 | |
| 188 | /* ======= Important command functions: ======= */ |
| 189 | static void trace_actions_command (char *, int); |
| 190 | static void trace_start_command (char *, int); |
| 191 | static void trace_stop_command (char *, int); |
| 192 | static void trace_status_command (char *, int); |
| 193 | static void trace_find_command (char *, int); |
| 194 | static void trace_find_pc_command (char *, int); |
| 195 | static void trace_find_tracepoint_command (char *, int); |
| 196 | static void trace_find_line_command (char *, int); |
| 197 | static void trace_find_range_command (char *, int); |
| 198 | static void trace_find_outside_command (char *, int); |
| 199 | static void trace_dump_command (char *, int); |
| 200 | |
| 201 | /* support routines */ |
| 202 | |
| 203 | struct collection_list; |
| 204 | static void add_aexpr (struct collection_list *, struct agent_expr *); |
| 205 | static char *mem2hex (gdb_byte *, char *, int); |
| 206 | static void add_register (struct collection_list *collection, |
| 207 | unsigned int regno); |
| 208 | |
| 209 | static void free_uploaded_tps (struct uploaded_tp **utpp); |
| 210 | static void free_uploaded_tsvs (struct uploaded_tsv **utsvp); |
| 211 | |
| 212 | |
| 213 | extern void _initialize_tracepoint (void); |
| 214 | |
| 215 | static struct trace_status trace_status; |
| 216 | |
| 217 | char *stop_reason_names[] = { |
| 218 | "tunknown", |
| 219 | "tnotrun", |
| 220 | "tstop", |
| 221 | "tfull", |
| 222 | "tdisconnected", |
| 223 | "tpasscount", |
| 224 | "terror" |
| 225 | }; |
| 226 | |
| 227 | struct trace_status * |
| 228 | current_trace_status (void) |
| 229 | { |
| 230 | return &trace_status; |
| 231 | } |
| 232 | |
| 233 | /* Destroy INFO. */ |
| 234 | |
| 235 | static void |
| 236 | free_traceframe_info (struct traceframe_info *info) |
| 237 | { |
| 238 | if (info != NULL) |
| 239 | { |
| 240 | VEC_free (mem_range_s, info->memory); |
| 241 | |
| 242 | xfree (info); |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | /* Free and clear the traceframe info cache of the current |
| 247 | traceframe. */ |
| 248 | |
| 249 | static void |
| 250 | clear_traceframe_info (void) |
| 251 | { |
| 252 | free_traceframe_info (traceframe_info); |
| 253 | traceframe_info = NULL; |
| 254 | } |
| 255 | |
| 256 | /* Set traceframe number to NUM. */ |
| 257 | static void |
| 258 | set_traceframe_num (int num) |
| 259 | { |
| 260 | traceframe_number = num; |
| 261 | set_internalvar_integer (lookup_internalvar ("trace_frame"), num); |
| 262 | } |
| 263 | |
| 264 | /* Set tracepoint number to NUM. */ |
| 265 | static void |
| 266 | set_tracepoint_num (int num) |
| 267 | { |
| 268 | tracepoint_number = num; |
| 269 | set_internalvar_integer (lookup_internalvar ("tracepoint"), num); |
| 270 | } |
| 271 | |
| 272 | /* Set externally visible debug variables for querying/printing |
| 273 | the traceframe context (line, function, file). */ |
| 274 | |
| 275 | static void |
| 276 | set_traceframe_context (struct frame_info *trace_frame) |
| 277 | { |
| 278 | CORE_ADDR trace_pc; |
| 279 | |
| 280 | /* Save as globals for internal use. */ |
| 281 | if (trace_frame != NULL |
| 282 | && get_frame_pc_if_available (trace_frame, &trace_pc)) |
| 283 | { |
| 284 | traceframe_sal = find_pc_line (trace_pc, 0); |
| 285 | traceframe_fun = find_pc_function (trace_pc); |
| 286 | |
| 287 | /* Save linenumber as "$trace_line", a debugger variable visible to |
| 288 | users. */ |
| 289 | set_internalvar_integer (lookup_internalvar ("trace_line"), |
| 290 | traceframe_sal.line); |
| 291 | } |
| 292 | else |
| 293 | { |
| 294 | init_sal (&traceframe_sal); |
| 295 | traceframe_fun = NULL; |
| 296 | set_internalvar_integer (lookup_internalvar ("trace_line"), -1); |
| 297 | } |
| 298 | |
| 299 | /* Save func name as "$trace_func", a debugger variable visible to |
| 300 | users. */ |
| 301 | if (traceframe_fun == NULL |
| 302 | || SYMBOL_LINKAGE_NAME (traceframe_fun) == NULL) |
| 303 | clear_internalvar (lookup_internalvar ("trace_func")); |
| 304 | else |
| 305 | set_internalvar_string (lookup_internalvar ("trace_func"), |
| 306 | SYMBOL_LINKAGE_NAME (traceframe_fun)); |
| 307 | |
| 308 | /* Save file name as "$trace_file", a debugger variable visible to |
| 309 | users. */ |
| 310 | if (traceframe_sal.symtab == NULL) |
| 311 | clear_internalvar (lookup_internalvar ("trace_file")); |
| 312 | else |
| 313 | set_internalvar_string (lookup_internalvar ("trace_file"), |
| 314 | symtab_to_filename_for_display (traceframe_sal.symtab)); |
| 315 | } |
| 316 | |
| 317 | /* Create a new trace state variable with the given name. */ |
| 318 | |
| 319 | struct trace_state_variable * |
| 320 | create_trace_state_variable (const char *name) |
| 321 | { |
| 322 | struct trace_state_variable tsv; |
| 323 | |
| 324 | memset (&tsv, 0, sizeof (tsv)); |
| 325 | tsv.name = xstrdup (name); |
| 326 | tsv.number = next_tsv_number++; |
| 327 | return VEC_safe_push (tsv_s, tvariables, &tsv); |
| 328 | } |
| 329 | |
| 330 | /* Look for a trace state variable of the given name. */ |
| 331 | |
| 332 | struct trace_state_variable * |
| 333 | find_trace_state_variable (const char *name) |
| 334 | { |
| 335 | struct trace_state_variable *tsv; |
| 336 | int ix; |
| 337 | |
| 338 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 339 | if (strcmp (name, tsv->name) == 0) |
| 340 | return tsv; |
| 341 | |
| 342 | return NULL; |
| 343 | } |
| 344 | |
| 345 | static void |
| 346 | delete_trace_state_variable (const char *name) |
| 347 | { |
| 348 | struct trace_state_variable *tsv; |
| 349 | int ix; |
| 350 | |
| 351 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 352 | if (strcmp (name, tsv->name) == 0) |
| 353 | { |
| 354 | xfree ((void *)tsv->name); |
| 355 | VEC_unordered_remove (tsv_s, tvariables, ix); |
| 356 | |
| 357 | observer_notify_tsv_deleted (name); |
| 358 | |
| 359 | return; |
| 360 | } |
| 361 | |
| 362 | warning (_("No trace variable named \"$%s\", not deleting"), name); |
| 363 | } |
| 364 | |
| 365 | /* The 'tvariable' command collects a name and optional expression to |
| 366 | evaluate into an initial value. */ |
| 367 | |
| 368 | static void |
| 369 | trace_variable_command (char *args, int from_tty) |
| 370 | { |
| 371 | struct expression *expr; |
| 372 | struct cleanup *old_chain; |
| 373 | struct internalvar *intvar = NULL; |
| 374 | LONGEST initval = 0; |
| 375 | struct trace_state_variable *tsv; |
| 376 | |
| 377 | if (!args || !*args) |
| 378 | error_no_arg (_("trace state variable name")); |
| 379 | |
| 380 | /* All the possible valid arguments are expressions. */ |
| 381 | expr = parse_expression (args); |
| 382 | old_chain = make_cleanup (free_current_contents, &expr); |
| 383 | |
| 384 | if (expr->nelts == 0) |
| 385 | error (_("No expression?")); |
| 386 | |
| 387 | /* Only allow two syntaxes; "$name" and "$name=value". */ |
| 388 | if (expr->elts[0].opcode == OP_INTERNALVAR) |
| 389 | { |
| 390 | intvar = expr->elts[1].internalvar; |
| 391 | } |
| 392 | else if (expr->elts[0].opcode == BINOP_ASSIGN |
| 393 | && expr->elts[1].opcode == OP_INTERNALVAR) |
| 394 | { |
| 395 | intvar = expr->elts[2].internalvar; |
| 396 | initval = value_as_long (evaluate_subexpression_type (expr, 4)); |
| 397 | } |
| 398 | else |
| 399 | error (_("Syntax must be $NAME [ = EXPR ]")); |
| 400 | |
| 401 | if (!intvar) |
| 402 | error (_("No name given")); |
| 403 | |
| 404 | if (strlen (internalvar_name (intvar)) <= 0) |
| 405 | error (_("Must supply a non-empty variable name")); |
| 406 | |
| 407 | /* If the variable already exists, just change its initial value. */ |
| 408 | tsv = find_trace_state_variable (internalvar_name (intvar)); |
| 409 | if (tsv) |
| 410 | { |
| 411 | tsv->initial_value = initval; |
| 412 | printf_filtered (_("Trace state variable $%s " |
| 413 | "now has initial value %s.\n"), |
| 414 | tsv->name, plongest (tsv->initial_value)); |
| 415 | do_cleanups (old_chain); |
| 416 | return; |
| 417 | } |
| 418 | |
| 419 | /* Create a new variable. */ |
| 420 | tsv = create_trace_state_variable (internalvar_name (intvar)); |
| 421 | tsv->initial_value = initval; |
| 422 | |
| 423 | observer_notify_tsv_created (tsv->name, initval); |
| 424 | |
| 425 | printf_filtered (_("Trace state variable $%s " |
| 426 | "created, with initial value %s.\n"), |
| 427 | tsv->name, plongest (tsv->initial_value)); |
| 428 | |
| 429 | do_cleanups (old_chain); |
| 430 | } |
| 431 | |
| 432 | static void |
| 433 | delete_trace_variable_command (char *args, int from_tty) |
| 434 | { |
| 435 | int ix; |
| 436 | char **argv; |
| 437 | struct cleanup *back_to; |
| 438 | |
| 439 | if (args == NULL) |
| 440 | { |
| 441 | if (query (_("Delete all trace state variables? "))) |
| 442 | VEC_free (tsv_s, tvariables); |
| 443 | dont_repeat (); |
| 444 | observer_notify_tsv_deleted (NULL); |
| 445 | return; |
| 446 | } |
| 447 | |
| 448 | argv = gdb_buildargv (args); |
| 449 | back_to = make_cleanup_freeargv (argv); |
| 450 | |
| 451 | for (ix = 0; argv[ix] != NULL; ix++) |
| 452 | { |
| 453 | if (*argv[ix] == '$') |
| 454 | delete_trace_state_variable (argv[ix] + 1); |
| 455 | else |
| 456 | warning (_("Name \"%s\" not prefixed with '$', ignoring"), argv[ix]); |
| 457 | } |
| 458 | |
| 459 | do_cleanups (back_to); |
| 460 | |
| 461 | dont_repeat (); |
| 462 | } |
| 463 | |
| 464 | void |
| 465 | tvariables_info_1 (void) |
| 466 | { |
| 467 | struct trace_state_variable *tsv; |
| 468 | int ix; |
| 469 | int count = 0; |
| 470 | struct cleanup *back_to; |
| 471 | struct ui_out *uiout = current_uiout; |
| 472 | |
| 473 | if (VEC_length (tsv_s, tvariables) == 0 && !ui_out_is_mi_like_p (uiout)) |
| 474 | { |
| 475 | printf_filtered (_("No trace state variables.\n")); |
| 476 | return; |
| 477 | } |
| 478 | |
| 479 | /* Try to acquire values from the target. */ |
| 480 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix, ++count) |
| 481 | tsv->value_known = target_get_trace_state_variable_value (tsv->number, |
| 482 | &(tsv->value)); |
| 483 | |
| 484 | back_to = make_cleanup_ui_out_table_begin_end (uiout, 3, |
| 485 | count, "trace-variables"); |
| 486 | ui_out_table_header (uiout, 15, ui_left, "name", "Name"); |
| 487 | ui_out_table_header (uiout, 11, ui_left, "initial", "Initial"); |
| 488 | ui_out_table_header (uiout, 11, ui_left, "current", "Current"); |
| 489 | |
| 490 | ui_out_table_body (uiout); |
| 491 | |
| 492 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 493 | { |
| 494 | struct cleanup *back_to2; |
| 495 | char *c; |
| 496 | char *name; |
| 497 | |
| 498 | back_to2 = make_cleanup_ui_out_tuple_begin_end (uiout, "variable"); |
| 499 | |
| 500 | name = concat ("$", 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)); |
| 504 | |
| 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. */ |
| 511 | c = NULL; |
| 512 | else if (current_trace_status ()->running || traceframe_number >= 0) |
| 513 | /* The value is/was defined, but we don't have it. */ |
| 514 | c = "<unknown>"; |
| 515 | else |
| 516 | /* It is not meaningful to ask about the value. */ |
| 517 | c = "<undefined>"; |
| 518 | if (c) |
| 519 | ui_out_field_string (uiout, "current", c); |
| 520 | ui_out_text (uiout, "\n"); |
| 521 | |
| 522 | do_cleanups (back_to2); |
| 523 | } |
| 524 | |
| 525 | do_cleanups (back_to); |
| 526 | } |
| 527 | |
| 528 | /* List all the trace state variables. */ |
| 529 | |
| 530 | static void |
| 531 | tvariables_info (char *args, int from_tty) |
| 532 | { |
| 533 | tvariables_info_1 (); |
| 534 | } |
| 535 | |
| 536 | /* Stash definitions of tsvs into the given file. */ |
| 537 | |
| 538 | void |
| 539 | save_trace_state_variables (struct ui_file *fp) |
| 540 | { |
| 541 | struct trace_state_variable *tsv; |
| 542 | int ix; |
| 543 | |
| 544 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 545 | { |
| 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"); |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /* ACTIONS functions: */ |
| 554 | |
| 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. */ |
| 563 | |
| 564 | void |
| 565 | end_actions_pseudocommand (char *args, int from_tty) |
| 566 | { |
| 567 | error (_("This command cannot be used at the top level.")); |
| 568 | } |
| 569 | |
| 570 | void |
| 571 | while_stepping_pseudocommand (char *args, int from_tty) |
| 572 | { |
| 573 | error (_("This command can only be used in a tracepoint actions list.")); |
| 574 | } |
| 575 | |
| 576 | static void |
| 577 | collect_pseudocommand (char *args, int from_tty) |
| 578 | { |
| 579 | error (_("This command can only be used in a tracepoint actions list.")); |
| 580 | } |
| 581 | |
| 582 | static void |
| 583 | teval_pseudocommand (char *args, int from_tty) |
| 584 | { |
| 585 | error (_("This command can only be used in a tracepoint actions list.")); |
| 586 | } |
| 587 | |
| 588 | /* Parse any collection options, such as /s for strings. */ |
| 589 | |
| 590 | char * |
| 591 | decode_agent_options (char *exp) |
| 592 | { |
| 593 | struct value_print_options opts; |
| 594 | |
| 595 | if (*exp != '/') |
| 596 | return exp; |
| 597 | |
| 598 | /* Call this to borrow the print elements default for collection |
| 599 | size. */ |
| 600 | get_user_print_options (&opts); |
| 601 | |
| 602 | exp++; |
| 603 | if (*exp == 's') |
| 604 | { |
| 605 | if (target_supports_string_tracing ()) |
| 606 | { |
| 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; |
| 611 | exp++; |
| 612 | if (*exp >= '0' && *exp <= '9') |
| 613 | trace_string_kludge = atoi (exp); |
| 614 | while (*exp >= '0' && *exp <= '9') |
| 615 | exp++; |
| 616 | } |
| 617 | else |
| 618 | error (_("Target does not support \"/s\" option for string tracing.")); |
| 619 | } |
| 620 | else |
| 621 | error (_("Undefined collection format \"%c\"."), *exp); |
| 622 | |
| 623 | exp = skip_spaces (exp); |
| 624 | |
| 625 | return exp; |
| 626 | } |
| 627 | |
| 628 | /* Enter a list of actions for a tracepoint. */ |
| 629 | static void |
| 630 | trace_actions_command (char *args, int from_tty) |
| 631 | { |
| 632 | struct tracepoint *t; |
| 633 | struct command_line *l; |
| 634 | |
| 635 | t = get_tracepoint_by_number (&args, NULL, 1); |
| 636 | if (t) |
| 637 | { |
| 638 | char *tmpbuf = |
| 639 | xstrprintf ("Enter actions for tracepoint %d, one per line.", |
| 640 | t->base.number); |
| 641 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); |
| 642 | |
| 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); |
| 647 | } |
| 648 | /* else just return */ |
| 649 | } |
| 650 | |
| 651 | /* Report the results of checking the agent expression, as errors or |
| 652 | internal errors. */ |
| 653 | |
| 654 | static void |
| 655 | report_agent_reqs_errors (struct agent_expr *aexpr) |
| 656 | { |
| 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")); |
| 661 | |
| 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")); |
| 667 | |
| 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.")); |
| 676 | } |
| 677 | |
| 678 | /* worker function */ |
| 679 | void |
| 680 | validate_actionline (char **line, struct breakpoint *b) |
| 681 | { |
| 682 | struct cmd_list_element *c; |
| 683 | struct expression *exp = NULL; |
| 684 | struct cleanup *old_chain = NULL; |
| 685 | char *p, *tmp_p; |
| 686 | struct bp_location *loc; |
| 687 | struct agent_expr *aexpr; |
| 688 | struct tracepoint *t = (struct tracepoint *) b; |
| 689 | |
| 690 | /* If EOF is typed, *line is NULL. */ |
| 691 | if (*line == NULL) |
| 692 | return; |
| 693 | |
| 694 | for (p = *line; isspace ((int) *p);) |
| 695 | p++; |
| 696 | |
| 697 | /* Symbol lookup etc. */ |
| 698 | if (*p == '\0') /* empty line: just prompt for another line. */ |
| 699 | return; |
| 700 | |
| 701 | if (*p == '#') /* comment line */ |
| 702 | return; |
| 703 | |
| 704 | c = lookup_cmd (&p, cmdlist, "", -1, 1); |
| 705 | if (c == 0) |
| 706 | error (_("`%s' is not a tracepoint action, or is ambiguous."), p); |
| 707 | |
| 708 | if (cmd_cfunc_eq (c, collect_pseudocommand)) |
| 709 | { |
| 710 | trace_string_kludge = 0; |
| 711 | if (*p == '/') |
| 712 | p = decode_agent_options (p); |
| 713 | |
| 714 | do |
| 715 | { /* Repeat over a comma-separated list. */ |
| 716 | QUIT; /* Allow user to bail out with ^C. */ |
| 717 | while (isspace ((int) *p)) |
| 718 | p++; |
| 719 | |
| 720 | if (*p == '$') /* Look for special pseudo-symbols. */ |
| 721 | { |
| 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)) |
| 727 | { |
| 728 | p = strchr (p, ','); |
| 729 | continue; |
| 730 | } |
| 731 | /* else fall thru, treat p as an expression and parse it! */ |
| 732 | } |
| 733 | tmp_p = p; |
| 734 | for (loc = t->base.loc; loc; loc = loc->next) |
| 735 | { |
| 736 | p = tmp_p; |
| 737 | exp = parse_exp_1 (&p, loc->address, |
| 738 | block_for_pc (loc->address), 1); |
| 739 | old_chain = make_cleanup (free_current_contents, &exp); |
| 740 | |
| 741 | if (exp->elts[0].opcode == OP_VAR_VALUE) |
| 742 | { |
| 743 | if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST) |
| 744 | { |
| 745 | error (_("constant `%s' (value %s) " |
| 746 | "will not be collected."), |
| 747 | SYMBOL_PRINT_NAME (exp->elts[2].symbol), |
| 748 | plongest (SYMBOL_VALUE (exp->elts[2].symbol))); |
| 749 | } |
| 750 | else if (SYMBOL_CLASS (exp->elts[2].symbol) |
| 751 | == LOC_OPTIMIZED_OUT) |
| 752 | { |
| 753 | error (_("`%s' is optimized away " |
| 754 | "and cannot be collected."), |
| 755 | SYMBOL_PRINT_NAME (exp->elts[2].symbol)); |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | /* We have something to collect, make sure that the expr to |
| 760 | bytecode translator can handle it and that it's not too |
| 761 | long. */ |
| 762 | aexpr = gen_trace_for_expr (loc->address, exp); |
| 763 | make_cleanup_free_agent_expr (aexpr); |
| 764 | |
| 765 | if (aexpr->len > MAX_AGENT_EXPR_LEN) |
| 766 | error (_("Expression is too complicated.")); |
| 767 | |
| 768 | ax_reqs (aexpr); |
| 769 | |
| 770 | report_agent_reqs_errors (aexpr); |
| 771 | |
| 772 | do_cleanups (old_chain); |
| 773 | } |
| 774 | } |
| 775 | while (p && *p++ == ','); |
| 776 | } |
| 777 | |
| 778 | else if (cmd_cfunc_eq (c, teval_pseudocommand)) |
| 779 | { |
| 780 | do |
| 781 | { /* Repeat over a comma-separated list. */ |
| 782 | QUIT; /* Allow user to bail out with ^C. */ |
| 783 | while (isspace ((int) *p)) |
| 784 | p++; |
| 785 | |
| 786 | tmp_p = p; |
| 787 | for (loc = t->base.loc; loc; loc = loc->next) |
| 788 | { |
| 789 | p = tmp_p; |
| 790 | /* Only expressions are allowed for this action. */ |
| 791 | exp = parse_exp_1 (&p, loc->address, |
| 792 | block_for_pc (loc->address), 1); |
| 793 | old_chain = make_cleanup (free_current_contents, &exp); |
| 794 | |
| 795 | /* We have something to evaluate, make sure that the expr to |
| 796 | bytecode translator can handle it and that it's not too |
| 797 | long. */ |
| 798 | aexpr = gen_eval_for_expr (loc->address, exp); |
| 799 | make_cleanup_free_agent_expr (aexpr); |
| 800 | |
| 801 | if (aexpr->len > MAX_AGENT_EXPR_LEN) |
| 802 | error (_("Expression is too complicated.")); |
| 803 | |
| 804 | ax_reqs (aexpr); |
| 805 | report_agent_reqs_errors (aexpr); |
| 806 | |
| 807 | do_cleanups (old_chain); |
| 808 | } |
| 809 | } |
| 810 | while (p && *p++ == ','); |
| 811 | } |
| 812 | |
| 813 | else if (cmd_cfunc_eq (c, while_stepping_pseudocommand)) |
| 814 | { |
| 815 | char *steparg; /* In case warning is necessary. */ |
| 816 | |
| 817 | while (isspace ((int) *p)) |
| 818 | p++; |
| 819 | steparg = p; |
| 820 | |
| 821 | if (*p == '\0' || (t->step_count = strtol (p, &p, 0)) == 0) |
| 822 | error (_("while-stepping step count `%s' is malformed."), *line); |
| 823 | } |
| 824 | |
| 825 | else if (cmd_cfunc_eq (c, end_actions_pseudocommand)) |
| 826 | ; |
| 827 | |
| 828 | else |
| 829 | error (_("`%s' is not a supported tracepoint action."), *line); |
| 830 | } |
| 831 | |
| 832 | enum { |
| 833 | memrange_absolute = -1 |
| 834 | }; |
| 835 | |
| 836 | struct memrange |
| 837 | { |
| 838 | int type; /* memrange_absolute for absolute memory range, |
| 839 | else basereg number. */ |
| 840 | bfd_signed_vma start; |
| 841 | bfd_signed_vma end; |
| 842 | }; |
| 843 | |
| 844 | struct collection_list |
| 845 | { |
| 846 | unsigned char regs_mask[32]; /* room for up to 256 regs */ |
| 847 | long listsize; |
| 848 | long next_memrange; |
| 849 | struct memrange *list; |
| 850 | long aexpr_listsize; /* size of array pointed to by expr_list elt */ |
| 851 | long next_aexpr_elt; |
| 852 | struct agent_expr **aexpr_list; |
| 853 | |
| 854 | /* True is the user requested a collection of "$_sdata", "static |
| 855 | tracepoint data". */ |
| 856 | int strace_data; |
| 857 | } |
| 858 | tracepoint_list, stepping_list; |
| 859 | |
| 860 | /* MEMRANGE functions: */ |
| 861 | |
| 862 | static int memrange_cmp (const void *, const void *); |
| 863 | |
| 864 | /* Compare memranges for qsort. */ |
| 865 | static int |
| 866 | memrange_cmp (const void *va, const void *vb) |
| 867 | { |
| 868 | const struct memrange *a = va, *b = vb; |
| 869 | |
| 870 | if (a->type < b->type) |
| 871 | return -1; |
| 872 | if (a->type > b->type) |
| 873 | return 1; |
| 874 | if (a->type == memrange_absolute) |
| 875 | { |
| 876 | if ((bfd_vma) a->start < (bfd_vma) b->start) |
| 877 | return -1; |
| 878 | if ((bfd_vma) a->start > (bfd_vma) b->start) |
| 879 | return 1; |
| 880 | } |
| 881 | else |
| 882 | { |
| 883 | if (a->start < b->start) |
| 884 | return -1; |
| 885 | if (a->start > b->start) |
| 886 | return 1; |
| 887 | } |
| 888 | return 0; |
| 889 | } |
| 890 | |
| 891 | /* Sort the memrange list using qsort, and merge adjacent memranges. */ |
| 892 | static void |
| 893 | memrange_sortmerge (struct collection_list *memranges) |
| 894 | { |
| 895 | int a, b; |
| 896 | |
| 897 | qsort (memranges->list, memranges->next_memrange, |
| 898 | sizeof (struct memrange), memrange_cmp); |
| 899 | if (memranges->next_memrange > 0) |
| 900 | { |
| 901 | for (a = 0, b = 1; b < memranges->next_memrange; b++) |
| 902 | { |
| 903 | /* If memrange b overlaps or is adjacent to memrange a, |
| 904 | merge them. */ |
| 905 | if (memranges->list[a].type == memranges->list[b].type |
| 906 | && memranges->list[b].start <= memranges->list[a].end) |
| 907 | { |
| 908 | if (memranges->list[b].end > memranges->list[a].end) |
| 909 | memranges->list[a].end = memranges->list[b].end; |
| 910 | continue; /* next b, same a */ |
| 911 | } |
| 912 | a++; /* next a */ |
| 913 | if (a != b) |
| 914 | memcpy (&memranges->list[a], &memranges->list[b], |
| 915 | sizeof (struct memrange)); |
| 916 | } |
| 917 | memranges->next_memrange = a + 1; |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | /* Add a register to a collection list. */ |
| 922 | static void |
| 923 | add_register (struct collection_list *collection, unsigned int regno) |
| 924 | { |
| 925 | if (info_verbose) |
| 926 | printf_filtered ("collect register %d\n", regno); |
| 927 | if (regno >= (8 * sizeof (collection->regs_mask))) |
| 928 | error (_("Internal: register number %d too large for tracepoint"), |
| 929 | regno); |
| 930 | collection->regs_mask[regno / 8] |= 1 << (regno % 8); |
| 931 | } |
| 932 | |
| 933 | /* Add a memrange to a collection list. */ |
| 934 | static void |
| 935 | add_memrange (struct collection_list *memranges, |
| 936 | int type, bfd_signed_vma base, |
| 937 | unsigned long len) |
| 938 | { |
| 939 | if (info_verbose) |
| 940 | { |
| 941 | printf_filtered ("(%d,", type); |
| 942 | printf_vma (base); |
| 943 | printf_filtered (",%ld)\n", len); |
| 944 | } |
| 945 | |
| 946 | /* type: memrange_absolute == memory, other n == basereg */ |
| 947 | memranges->list[memranges->next_memrange].type = type; |
| 948 | /* base: addr if memory, offset if reg relative. */ |
| 949 | memranges->list[memranges->next_memrange].start = base; |
| 950 | /* len: we actually save end (base + len) for convenience */ |
| 951 | memranges->list[memranges->next_memrange].end = base + len; |
| 952 | memranges->next_memrange++; |
| 953 | if (memranges->next_memrange >= memranges->listsize) |
| 954 | { |
| 955 | memranges->listsize *= 2; |
| 956 | memranges->list = xrealloc (memranges->list, |
| 957 | memranges->listsize); |
| 958 | } |
| 959 | |
| 960 | if (type != memrange_absolute) /* Better collect the base register! */ |
| 961 | add_register (memranges, type); |
| 962 | } |
| 963 | |
| 964 | /* Add a symbol to a collection list. */ |
| 965 | static void |
| 966 | collect_symbol (struct collection_list *collect, |
| 967 | struct symbol *sym, |
| 968 | struct gdbarch *gdbarch, |
| 969 | long frame_regno, long frame_offset, |
| 970 | CORE_ADDR scope) |
| 971 | { |
| 972 | unsigned long len; |
| 973 | unsigned int reg; |
| 974 | bfd_signed_vma offset; |
| 975 | int treat_as_expr = 0; |
| 976 | |
| 977 | len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))); |
| 978 | switch (SYMBOL_CLASS (sym)) |
| 979 | { |
| 980 | default: |
| 981 | printf_filtered ("%s: don't know symbol class %d\n", |
| 982 | SYMBOL_PRINT_NAME (sym), |
| 983 | SYMBOL_CLASS (sym)); |
| 984 | break; |
| 985 | case LOC_CONST: |
| 986 | printf_filtered ("constant %s (value %s) will not be collected.\n", |
| 987 | SYMBOL_PRINT_NAME (sym), plongest (SYMBOL_VALUE (sym))); |
| 988 | break; |
| 989 | case LOC_STATIC: |
| 990 | offset = SYMBOL_VALUE_ADDRESS (sym); |
| 991 | if (info_verbose) |
| 992 | { |
| 993 | char tmp[40]; |
| 994 | |
| 995 | sprintf_vma (tmp, offset); |
| 996 | printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n", |
| 997 | SYMBOL_PRINT_NAME (sym), len, |
| 998 | tmp /* address */); |
| 999 | } |
| 1000 | /* A struct may be a C++ class with static fields, go to general |
| 1001 | expression handling. */ |
| 1002 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT) |
| 1003 | treat_as_expr = 1; |
| 1004 | else |
| 1005 | add_memrange (collect, memrange_absolute, offset, len); |
| 1006 | break; |
| 1007 | case LOC_REGISTER: |
| 1008 | reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); |
| 1009 | if (info_verbose) |
| 1010 | printf_filtered ("LOC_REG[parm] %s: ", |
| 1011 | SYMBOL_PRINT_NAME (sym)); |
| 1012 | add_register (collect, reg); |
| 1013 | /* Check for doubles stored in two registers. */ |
| 1014 | /* FIXME: how about larger types stored in 3 or more regs? */ |
| 1015 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT && |
| 1016 | len > register_size (gdbarch, reg)) |
| 1017 | add_register (collect, reg + 1); |
| 1018 | break; |
| 1019 | case LOC_REF_ARG: |
| 1020 | printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n"); |
| 1021 | printf_filtered (" (will not collect %s)\n", |
| 1022 | SYMBOL_PRINT_NAME (sym)); |
| 1023 | break; |
| 1024 | case LOC_ARG: |
| 1025 | reg = frame_regno; |
| 1026 | offset = frame_offset + SYMBOL_VALUE (sym); |
| 1027 | if (info_verbose) |
| 1028 | { |
| 1029 | printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ", |
| 1030 | SYMBOL_PRINT_NAME (sym), len); |
| 1031 | printf_vma (offset); |
| 1032 | printf_filtered (" from frame ptr reg %d\n", reg); |
| 1033 | } |
| 1034 | add_memrange (collect, reg, offset, len); |
| 1035 | break; |
| 1036 | case LOC_REGPARM_ADDR: |
| 1037 | reg = SYMBOL_VALUE (sym); |
| 1038 | offset = 0; |
| 1039 | if (info_verbose) |
| 1040 | { |
| 1041 | printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset ", |
| 1042 | SYMBOL_PRINT_NAME (sym), len); |
| 1043 | printf_vma (offset); |
| 1044 | printf_filtered (" from reg %d\n", reg); |
| 1045 | } |
| 1046 | add_memrange (collect, reg, offset, len); |
| 1047 | break; |
| 1048 | case LOC_LOCAL: |
| 1049 | reg = frame_regno; |
| 1050 | offset = frame_offset + SYMBOL_VALUE (sym); |
| 1051 | if (info_verbose) |
| 1052 | { |
| 1053 | printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset ", |
| 1054 | SYMBOL_PRINT_NAME (sym), len); |
| 1055 | printf_vma (offset); |
| 1056 | printf_filtered (" from frame ptr reg %d\n", reg); |
| 1057 | } |
| 1058 | add_memrange (collect, reg, offset, len); |
| 1059 | break; |
| 1060 | |
| 1061 | case LOC_UNRESOLVED: |
| 1062 | treat_as_expr = 1; |
| 1063 | break; |
| 1064 | |
| 1065 | case LOC_OPTIMIZED_OUT: |
| 1066 | printf_filtered ("%s has been optimized out of existence.\n", |
| 1067 | SYMBOL_PRINT_NAME (sym)); |
| 1068 | break; |
| 1069 | |
| 1070 | case LOC_COMPUTED: |
| 1071 | treat_as_expr = 1; |
| 1072 | break; |
| 1073 | } |
| 1074 | |
| 1075 | /* Expressions are the most general case. */ |
| 1076 | if (treat_as_expr) |
| 1077 | { |
| 1078 | struct agent_expr *aexpr; |
| 1079 | struct cleanup *old_chain1 = NULL; |
| 1080 | |
| 1081 | aexpr = gen_trace_for_var (scope, gdbarch, sym); |
| 1082 | |
| 1083 | /* It can happen that the symbol is recorded as a computed |
| 1084 | location, but it's been optimized away and doesn't actually |
| 1085 | have a location expression. */ |
| 1086 | if (!aexpr) |
| 1087 | { |
| 1088 | printf_filtered ("%s has been optimized out of existence.\n", |
| 1089 | SYMBOL_PRINT_NAME (sym)); |
| 1090 | return; |
| 1091 | } |
| 1092 | |
| 1093 | old_chain1 = make_cleanup_free_agent_expr (aexpr); |
| 1094 | |
| 1095 | ax_reqs (aexpr); |
| 1096 | |
| 1097 | report_agent_reqs_errors (aexpr); |
| 1098 | |
| 1099 | discard_cleanups (old_chain1); |
| 1100 | add_aexpr (collect, aexpr); |
| 1101 | |
| 1102 | /* Take care of the registers. */ |
| 1103 | if (aexpr->reg_mask_len > 0) |
| 1104 | { |
| 1105 | int ndx1, ndx2; |
| 1106 | |
| 1107 | for (ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++) |
| 1108 | { |
| 1109 | QUIT; /* Allow user to bail out with ^C. */ |
| 1110 | if (aexpr->reg_mask[ndx1] != 0) |
| 1111 | { |
| 1112 | /* Assume chars have 8 bits. */ |
| 1113 | for (ndx2 = 0; ndx2 < 8; ndx2++) |
| 1114 | if (aexpr->reg_mask[ndx1] & (1 << ndx2)) |
| 1115 | /* It's used -- record it. */ |
| 1116 | add_register (collect, ndx1 * 8 + ndx2); |
| 1117 | } |
| 1118 | } |
| 1119 | } |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | /* Data to be passed around in the calls to the locals and args |
| 1124 | iterators. */ |
| 1125 | |
| 1126 | struct add_local_symbols_data |
| 1127 | { |
| 1128 | struct collection_list *collect; |
| 1129 | struct gdbarch *gdbarch; |
| 1130 | CORE_ADDR pc; |
| 1131 | long frame_regno; |
| 1132 | long frame_offset; |
| 1133 | int count; |
| 1134 | }; |
| 1135 | |
| 1136 | /* The callback for the locals and args iterators. */ |
| 1137 | |
| 1138 | static void |
| 1139 | do_collect_symbol (const char *print_name, |
| 1140 | struct symbol *sym, |
| 1141 | void *cb_data) |
| 1142 | { |
| 1143 | struct add_local_symbols_data *p = cb_data; |
| 1144 | |
| 1145 | collect_symbol (p->collect, sym, p->gdbarch, p->frame_regno, |
| 1146 | p->frame_offset, p->pc); |
| 1147 | p->count++; |
| 1148 | } |
| 1149 | |
| 1150 | /* Add all locals (or args) symbols to collection list. */ |
| 1151 | static void |
| 1152 | add_local_symbols (struct collection_list *collect, |
| 1153 | struct gdbarch *gdbarch, CORE_ADDR pc, |
| 1154 | long frame_regno, long frame_offset, int type) |
| 1155 | { |
| 1156 | struct block *block; |
| 1157 | struct add_local_symbols_data cb_data; |
| 1158 | |
| 1159 | cb_data.collect = collect; |
| 1160 | cb_data.gdbarch = gdbarch; |
| 1161 | cb_data.pc = pc; |
| 1162 | cb_data.frame_regno = frame_regno; |
| 1163 | cb_data.frame_offset = frame_offset; |
| 1164 | cb_data.count = 0; |
| 1165 | |
| 1166 | if (type == 'L') |
| 1167 | { |
| 1168 | block = block_for_pc (pc); |
| 1169 | if (block == NULL) |
| 1170 | { |
| 1171 | warning (_("Can't collect locals; " |
| 1172 | "no symbol table info available.\n")); |
| 1173 | return; |
| 1174 | } |
| 1175 | |
| 1176 | iterate_over_block_local_vars (block, do_collect_symbol, &cb_data); |
| 1177 | if (cb_data.count == 0) |
| 1178 | warning (_("No locals found in scope.")); |
| 1179 | } |
| 1180 | else |
| 1181 | { |
| 1182 | pc = get_pc_function_start (pc); |
| 1183 | block = block_for_pc (pc); |
| 1184 | if (block == NULL) |
| 1185 | { |
| 1186 | warning (_("Can't collect args; no symbol table info available.")); |
| 1187 | return; |
| 1188 | } |
| 1189 | |
| 1190 | iterate_over_block_arg_vars (block, do_collect_symbol, &cb_data); |
| 1191 | if (cb_data.count == 0) |
| 1192 | warning (_("No args found in scope.")); |
| 1193 | } |
| 1194 | } |
| 1195 | |
| 1196 | static void |
| 1197 | add_static_trace_data (struct collection_list *collection) |
| 1198 | { |
| 1199 | if (info_verbose) |
| 1200 | printf_filtered ("collect static trace data\n"); |
| 1201 | collection->strace_data = 1; |
| 1202 | } |
| 1203 | |
| 1204 | /* worker function */ |
| 1205 | static void |
| 1206 | clear_collection_list (struct collection_list *list) |
| 1207 | { |
| 1208 | int ndx; |
| 1209 | |
| 1210 | list->next_memrange = 0; |
| 1211 | for (ndx = 0; ndx < list->next_aexpr_elt; ndx++) |
| 1212 | { |
| 1213 | free_agent_expr (list->aexpr_list[ndx]); |
| 1214 | list->aexpr_list[ndx] = NULL; |
| 1215 | } |
| 1216 | list->next_aexpr_elt = 0; |
| 1217 | memset (list->regs_mask, 0, sizeof (list->regs_mask)); |
| 1218 | list->strace_data = 0; |
| 1219 | } |
| 1220 | |
| 1221 | /* Reduce a collection list to string form (for gdb protocol). */ |
| 1222 | static char ** |
| 1223 | stringify_collection_list (struct collection_list *list, char *string) |
| 1224 | { |
| 1225 | char temp_buf[2048]; |
| 1226 | char tmp2[40]; |
| 1227 | int count; |
| 1228 | int ndx = 0; |
| 1229 | char *(*str_list)[]; |
| 1230 | char *end; |
| 1231 | long i; |
| 1232 | |
| 1233 | count = 1 + 1 + list->next_memrange + list->next_aexpr_elt + 1; |
| 1234 | str_list = (char *(*)[]) xmalloc (count * sizeof (char *)); |
| 1235 | |
| 1236 | if (list->strace_data) |
| 1237 | { |
| 1238 | if (info_verbose) |
| 1239 | printf_filtered ("\nCollecting static trace data\n"); |
| 1240 | end = temp_buf; |
| 1241 | *end++ = 'L'; |
| 1242 | (*str_list)[ndx] = savestring (temp_buf, end - temp_buf); |
| 1243 | ndx++; |
| 1244 | } |
| 1245 | |
| 1246 | for (i = sizeof (list->regs_mask) - 1; i > 0; i--) |
| 1247 | if (list->regs_mask[i] != 0) /* Skip leading zeroes in regs_mask. */ |
| 1248 | break; |
| 1249 | if (list->regs_mask[i] != 0) /* Prepare to send regs_mask to the stub. */ |
| 1250 | { |
| 1251 | if (info_verbose) |
| 1252 | printf_filtered ("\nCollecting registers (mask): 0x"); |
| 1253 | end = temp_buf; |
| 1254 | *end++ = 'R'; |
| 1255 | for (; i >= 0; i--) |
| 1256 | { |
| 1257 | QUIT; /* Allow user to bail out with ^C. */ |
| 1258 | if (info_verbose) |
| 1259 | printf_filtered ("%02X", list->regs_mask[i]); |
| 1260 | sprintf (end, "%02X", list->regs_mask[i]); |
| 1261 | end += 2; |
| 1262 | } |
| 1263 | (*str_list)[ndx] = xstrdup (temp_buf); |
| 1264 | ndx++; |
| 1265 | } |
| 1266 | if (info_verbose) |
| 1267 | printf_filtered ("\n"); |
| 1268 | if (list->next_memrange > 0 && info_verbose) |
| 1269 | printf_filtered ("Collecting memranges: \n"); |
| 1270 | for (i = 0, count = 0, end = temp_buf; i < list->next_memrange; i++) |
| 1271 | { |
| 1272 | QUIT; /* Allow user to bail out with ^C. */ |
| 1273 | sprintf_vma (tmp2, list->list[i].start); |
| 1274 | if (info_verbose) |
| 1275 | { |
| 1276 | printf_filtered ("(%d, %s, %ld)\n", |
| 1277 | list->list[i].type, |
| 1278 | tmp2, |
| 1279 | (long) (list->list[i].end - list->list[i].start)); |
| 1280 | } |
| 1281 | if (count + 27 > MAX_AGENT_EXPR_LEN) |
| 1282 | { |
| 1283 | (*str_list)[ndx] = savestring (temp_buf, count); |
| 1284 | ndx++; |
| 1285 | count = 0; |
| 1286 | end = temp_buf; |
| 1287 | } |
| 1288 | |
| 1289 | { |
| 1290 | bfd_signed_vma length = list->list[i].end - list->list[i].start; |
| 1291 | |
| 1292 | /* The "%X" conversion specifier expects an unsigned argument, |
| 1293 | so passing -1 (memrange_absolute) to it directly gives you |
| 1294 | "FFFFFFFF" (or more, depending on sizeof (unsigned)). |
| 1295 | Special-case it. */ |
| 1296 | if (list->list[i].type == memrange_absolute) |
| 1297 | sprintf (end, "M-1,%s,%lX", tmp2, (long) length); |
| 1298 | else |
| 1299 | sprintf (end, "M%X,%s,%lX", list->list[i].type, tmp2, (long) length); |
| 1300 | } |
| 1301 | |
| 1302 | count += strlen (end); |
| 1303 | end = temp_buf + count; |
| 1304 | } |
| 1305 | |
| 1306 | for (i = 0; i < list->next_aexpr_elt; i++) |
| 1307 | { |
| 1308 | QUIT; /* Allow user to bail out with ^C. */ |
| 1309 | if ((count + 10 + 2 * list->aexpr_list[i]->len) > MAX_AGENT_EXPR_LEN) |
| 1310 | { |
| 1311 | (*str_list)[ndx] = savestring (temp_buf, count); |
| 1312 | ndx++; |
| 1313 | count = 0; |
| 1314 | end = temp_buf; |
| 1315 | } |
| 1316 | sprintf (end, "X%08X,", list->aexpr_list[i]->len); |
| 1317 | end += 10; /* 'X' + 8 hex digits + ',' */ |
| 1318 | count += 10; |
| 1319 | |
| 1320 | end = mem2hex (list->aexpr_list[i]->buf, |
| 1321 | end, list->aexpr_list[i]->len); |
| 1322 | count += 2 * list->aexpr_list[i]->len; |
| 1323 | } |
| 1324 | |
| 1325 | if (count != 0) |
| 1326 | { |
| 1327 | (*str_list)[ndx] = savestring (temp_buf, count); |
| 1328 | ndx++; |
| 1329 | count = 0; |
| 1330 | end = temp_buf; |
| 1331 | } |
| 1332 | (*str_list)[ndx] = NULL; |
| 1333 | |
| 1334 | if (ndx == 0) |
| 1335 | { |
| 1336 | xfree (str_list); |
| 1337 | return NULL; |
| 1338 | } |
| 1339 | else |
| 1340 | return *str_list; |
| 1341 | } |
| 1342 | |
| 1343 | |
| 1344 | static void |
| 1345 | encode_actions_1 (struct command_line *action, |
| 1346 | struct breakpoint *t, |
| 1347 | struct bp_location *tloc, |
| 1348 | int frame_reg, |
| 1349 | LONGEST frame_offset, |
| 1350 | struct collection_list *collect, |
| 1351 | struct collection_list *stepping_list) |
| 1352 | { |
| 1353 | char *action_exp; |
| 1354 | struct expression *exp = NULL; |
| 1355 | int i; |
| 1356 | struct value *tempval; |
| 1357 | struct cmd_list_element *cmd; |
| 1358 | struct agent_expr *aexpr; |
| 1359 | |
| 1360 | for (; action; action = action->next) |
| 1361 | { |
| 1362 | QUIT; /* Allow user to bail out with ^C. */ |
| 1363 | action_exp = action->line; |
| 1364 | while (isspace ((int) *action_exp)) |
| 1365 | action_exp++; |
| 1366 | |
| 1367 | cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1); |
| 1368 | if (cmd == 0) |
| 1369 | error (_("Bad action list item: %s"), action_exp); |
| 1370 | |
| 1371 | if (cmd_cfunc_eq (cmd, collect_pseudocommand)) |
| 1372 | { |
| 1373 | trace_string_kludge = 0; |
| 1374 | if (*action_exp == '/') |
| 1375 | action_exp = decode_agent_options (action_exp); |
| 1376 | |
| 1377 | do |
| 1378 | { /* Repeat over a comma-separated list. */ |
| 1379 | QUIT; /* Allow user to bail out with ^C. */ |
| 1380 | while (isspace ((int) *action_exp)) |
| 1381 | action_exp++; |
| 1382 | |
| 1383 | if (0 == strncasecmp ("$reg", action_exp, 4)) |
| 1384 | { |
| 1385 | for (i = 0; i < gdbarch_num_regs (tloc->gdbarch); i++) |
| 1386 | add_register (collect, i); |
| 1387 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1388 | } |
| 1389 | else if (0 == strncasecmp ("$arg", action_exp, 4)) |
| 1390 | { |
| 1391 | add_local_symbols (collect, |
| 1392 | tloc->gdbarch, |
| 1393 | tloc->address, |
| 1394 | frame_reg, |
| 1395 | frame_offset, |
| 1396 | 'A'); |
| 1397 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1398 | } |
| 1399 | else if (0 == strncasecmp ("$loc", action_exp, 4)) |
| 1400 | { |
| 1401 | add_local_symbols (collect, |
| 1402 | tloc->gdbarch, |
| 1403 | tloc->address, |
| 1404 | frame_reg, |
| 1405 | frame_offset, |
| 1406 | 'L'); |
| 1407 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1408 | } |
| 1409 | else if (0 == strncasecmp ("$_ret", action_exp, 5)) |
| 1410 | { |
| 1411 | struct cleanup *old_chain1 = NULL; |
| 1412 | |
| 1413 | aexpr = gen_trace_for_return_address (tloc->address, |
| 1414 | tloc->gdbarch); |
| 1415 | |
| 1416 | old_chain1 = make_cleanup_free_agent_expr (aexpr); |
| 1417 | |
| 1418 | ax_reqs (aexpr); |
| 1419 | report_agent_reqs_errors (aexpr); |
| 1420 | |
| 1421 | discard_cleanups (old_chain1); |
| 1422 | add_aexpr (collect, aexpr); |
| 1423 | |
| 1424 | /* take care of the registers */ |
| 1425 | if (aexpr->reg_mask_len > 0) |
| 1426 | { |
| 1427 | int ndx1, ndx2; |
| 1428 | |
| 1429 | for (ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++) |
| 1430 | { |
| 1431 | QUIT; /* allow user to bail out with ^C */ |
| 1432 | if (aexpr->reg_mask[ndx1] != 0) |
| 1433 | { |
| 1434 | /* assume chars have 8 bits */ |
| 1435 | for (ndx2 = 0; ndx2 < 8; ndx2++) |
| 1436 | if (aexpr->reg_mask[ndx1] & (1 << ndx2)) |
| 1437 | /* it's used -- record it */ |
| 1438 | add_register (collect, |
| 1439 | ndx1 * 8 + ndx2); |
| 1440 | } |
| 1441 | } |
| 1442 | } |
| 1443 | |
| 1444 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1445 | } |
| 1446 | else if (0 == strncasecmp ("$_sdata", action_exp, 7)) |
| 1447 | { |
| 1448 | add_static_trace_data (collect); |
| 1449 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1450 | } |
| 1451 | else |
| 1452 | { |
| 1453 | unsigned long addr; |
| 1454 | struct cleanup *old_chain = NULL; |
| 1455 | struct cleanup *old_chain1 = NULL; |
| 1456 | |
| 1457 | exp = parse_exp_1 (&action_exp, tloc->address, |
| 1458 | block_for_pc (tloc->address), 1); |
| 1459 | old_chain = make_cleanup (free_current_contents, &exp); |
| 1460 | |
| 1461 | switch (exp->elts[0].opcode) |
| 1462 | { |
| 1463 | case OP_REGISTER: |
| 1464 | { |
| 1465 | const char *name = &exp->elts[2].string; |
| 1466 | |
| 1467 | i = user_reg_map_name_to_regnum (tloc->gdbarch, |
| 1468 | name, strlen (name)); |
| 1469 | if (i == -1) |
| 1470 | internal_error (__FILE__, __LINE__, |
| 1471 | _("Register $%s not available"), |
| 1472 | name); |
| 1473 | if (info_verbose) |
| 1474 | printf_filtered ("OP_REGISTER: "); |
| 1475 | add_register (collect, i); |
| 1476 | break; |
| 1477 | } |
| 1478 | |
| 1479 | case UNOP_MEMVAL: |
| 1480 | /* Safe because we know it's a simple expression. */ |
| 1481 | tempval = evaluate_expression (exp); |
| 1482 | addr = value_address (tempval); |
| 1483 | /* Initialize the TYPE_LENGTH if it is a typedef. */ |
| 1484 | check_typedef (exp->elts[1].type); |
| 1485 | add_memrange (collect, memrange_absolute, addr, |
| 1486 | TYPE_LENGTH (exp->elts[1].type)); |
| 1487 | break; |
| 1488 | |
| 1489 | case OP_VAR_VALUE: |
| 1490 | collect_symbol (collect, |
| 1491 | exp->elts[2].symbol, |
| 1492 | tloc->gdbarch, |
| 1493 | frame_reg, |
| 1494 | frame_offset, |
| 1495 | tloc->address); |
| 1496 | break; |
| 1497 | |
| 1498 | default: /* Full-fledged expression. */ |
| 1499 | aexpr = gen_trace_for_expr (tloc->address, exp); |
| 1500 | |
| 1501 | old_chain1 = make_cleanup_free_agent_expr (aexpr); |
| 1502 | |
| 1503 | ax_reqs (aexpr); |
| 1504 | |
| 1505 | report_agent_reqs_errors (aexpr); |
| 1506 | |
| 1507 | discard_cleanups (old_chain1); |
| 1508 | add_aexpr (collect, aexpr); |
| 1509 | |
| 1510 | /* Take care of the registers. */ |
| 1511 | if (aexpr->reg_mask_len > 0) |
| 1512 | { |
| 1513 | int ndx1; |
| 1514 | int ndx2; |
| 1515 | |
| 1516 | for (ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++) |
| 1517 | { |
| 1518 | QUIT; /* Allow user to bail out with ^C. */ |
| 1519 | if (aexpr->reg_mask[ndx1] != 0) |
| 1520 | { |
| 1521 | /* Assume chars have 8 bits. */ |
| 1522 | for (ndx2 = 0; ndx2 < 8; ndx2++) |
| 1523 | if (aexpr->reg_mask[ndx1] & (1 << ndx2)) |
| 1524 | /* It's used -- record it. */ |
| 1525 | add_register (collect, |
| 1526 | ndx1 * 8 + ndx2); |
| 1527 | } |
| 1528 | } |
| 1529 | } |
| 1530 | break; |
| 1531 | } /* switch */ |
| 1532 | do_cleanups (old_chain); |
| 1533 | } /* do */ |
| 1534 | } |
| 1535 | while (action_exp && *action_exp++ == ','); |
| 1536 | } /* if */ |
| 1537 | else if (cmd_cfunc_eq (cmd, teval_pseudocommand)) |
| 1538 | { |
| 1539 | do |
| 1540 | { /* Repeat over a comma-separated list. */ |
| 1541 | QUIT; /* Allow user to bail out with ^C. */ |
| 1542 | while (isspace ((int) *action_exp)) |
| 1543 | action_exp++; |
| 1544 | |
| 1545 | { |
| 1546 | struct cleanup *old_chain = NULL; |
| 1547 | struct cleanup *old_chain1 = NULL; |
| 1548 | |
| 1549 | exp = parse_exp_1 (&action_exp, tloc->address, |
| 1550 | block_for_pc (tloc->address), 1); |
| 1551 | old_chain = make_cleanup (free_current_contents, &exp); |
| 1552 | |
| 1553 | aexpr = gen_eval_for_expr (tloc->address, exp); |
| 1554 | old_chain1 = make_cleanup_free_agent_expr (aexpr); |
| 1555 | |
| 1556 | ax_reqs (aexpr); |
| 1557 | report_agent_reqs_errors (aexpr); |
| 1558 | |
| 1559 | discard_cleanups (old_chain1); |
| 1560 | /* Even though we're not officially collecting, add |
| 1561 | to the collect list anyway. */ |
| 1562 | add_aexpr (collect, aexpr); |
| 1563 | |
| 1564 | do_cleanups (old_chain); |
| 1565 | } /* do */ |
| 1566 | } |
| 1567 | while (action_exp && *action_exp++ == ','); |
| 1568 | } /* if */ |
| 1569 | else if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) |
| 1570 | { |
| 1571 | /* We check against nested while-stepping when setting |
| 1572 | breakpoint action, so no way to run into nested |
| 1573 | here. */ |
| 1574 | gdb_assert (stepping_list); |
| 1575 | |
| 1576 | encode_actions_1 (action->body_list[0], t, tloc, frame_reg, |
| 1577 | frame_offset, stepping_list, NULL); |
| 1578 | } |
| 1579 | else |
| 1580 | error (_("Invalid tracepoint command '%s'"), action->line); |
| 1581 | } /* for */ |
| 1582 | } |
| 1583 | |
| 1584 | /* Render all actions into gdb protocol. */ |
| 1585 | |
| 1586 | void |
| 1587 | encode_actions (struct breakpoint *t, struct bp_location *tloc, |
| 1588 | char ***tdp_actions, char ***stepping_actions) |
| 1589 | { |
| 1590 | static char tdp_buff[2048], step_buff[2048]; |
| 1591 | char *default_collect_line = NULL; |
| 1592 | struct command_line *actions; |
| 1593 | struct command_line *default_collect_action = NULL; |
| 1594 | int frame_reg; |
| 1595 | LONGEST frame_offset; |
| 1596 | struct cleanup *back_to; |
| 1597 | |
| 1598 | back_to = make_cleanup (null_cleanup, NULL); |
| 1599 | |
| 1600 | clear_collection_list (&tracepoint_list); |
| 1601 | clear_collection_list (&stepping_list); |
| 1602 | |
| 1603 | *tdp_actions = NULL; |
| 1604 | *stepping_actions = NULL; |
| 1605 | |
| 1606 | gdbarch_virtual_frame_pointer (tloc->gdbarch, |
| 1607 | tloc->address, &frame_reg, &frame_offset); |
| 1608 | |
| 1609 | actions = breakpoint_commands (t); |
| 1610 | |
| 1611 | /* If there are default expressions to collect, make up a collect |
| 1612 | action and prepend to the action list to encode. Note that since |
| 1613 | validation is per-tracepoint (local var "xyz" might be valid for |
| 1614 | one tracepoint and not another, etc), we make up the action on |
| 1615 | the fly, and don't cache it. */ |
| 1616 | if (*default_collect) |
| 1617 | { |
| 1618 | char *line; |
| 1619 | |
| 1620 | default_collect_line = xstrprintf ("collect %s", default_collect); |
| 1621 | make_cleanup (xfree, default_collect_line); |
| 1622 | |
| 1623 | line = default_collect_line; |
| 1624 | validate_actionline (&line, t); |
| 1625 | |
| 1626 | default_collect_action = xmalloc (sizeof (struct command_line)); |
| 1627 | make_cleanup (xfree, default_collect_action); |
| 1628 | default_collect_action->next = actions; |
| 1629 | default_collect_action->line = line; |
| 1630 | actions = default_collect_action; |
| 1631 | } |
| 1632 | encode_actions_1 (actions, t, tloc, frame_reg, frame_offset, |
| 1633 | &tracepoint_list, &stepping_list); |
| 1634 | |
| 1635 | memrange_sortmerge (&tracepoint_list); |
| 1636 | memrange_sortmerge (&stepping_list); |
| 1637 | |
| 1638 | *tdp_actions = stringify_collection_list (&tracepoint_list, |
| 1639 | tdp_buff); |
| 1640 | *stepping_actions = stringify_collection_list (&stepping_list, |
| 1641 | step_buff); |
| 1642 | |
| 1643 | do_cleanups (back_to); |
| 1644 | } |
| 1645 | |
| 1646 | static void |
| 1647 | add_aexpr (struct collection_list *collect, struct agent_expr *aexpr) |
| 1648 | { |
| 1649 | if (collect->next_aexpr_elt >= collect->aexpr_listsize) |
| 1650 | { |
| 1651 | collect->aexpr_list = |
| 1652 | xrealloc (collect->aexpr_list, |
| 1653 | 2 * collect->aexpr_listsize * sizeof (struct agent_expr *)); |
| 1654 | collect->aexpr_listsize *= 2; |
| 1655 | } |
| 1656 | collect->aexpr_list[collect->next_aexpr_elt] = aexpr; |
| 1657 | collect->next_aexpr_elt++; |
| 1658 | } |
| 1659 | |
| 1660 | static void |
| 1661 | process_tracepoint_on_disconnect (void) |
| 1662 | { |
| 1663 | VEC(breakpoint_p) *tp_vec = NULL; |
| 1664 | int ix; |
| 1665 | struct breakpoint *b; |
| 1666 | int has_pending_p = 0; |
| 1667 | |
| 1668 | /* Check whether we still have pending tracepoint. If we have, warn the |
| 1669 | user that pending tracepoint will no longer work. */ |
| 1670 | tp_vec = all_tracepoints (); |
| 1671 | for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++) |
| 1672 | { |
| 1673 | if (b->loc == NULL) |
| 1674 | { |
| 1675 | has_pending_p = 1; |
| 1676 | break; |
| 1677 | } |
| 1678 | else |
| 1679 | { |
| 1680 | struct bp_location *loc1; |
| 1681 | |
| 1682 | for (loc1 = b->loc; loc1; loc1 = loc1->next) |
| 1683 | { |
| 1684 | if (loc1->shlib_disabled) |
| 1685 | { |
| 1686 | has_pending_p = 1; |
| 1687 | break; |
| 1688 | } |
| 1689 | } |
| 1690 | |
| 1691 | if (has_pending_p) |
| 1692 | break; |
| 1693 | } |
| 1694 | } |
| 1695 | VEC_free (breakpoint_p, tp_vec); |
| 1696 | |
| 1697 | if (has_pending_p) |
| 1698 | warning (_("Pending tracepoints will not be resolved while" |
| 1699 | " GDB is disconnected\n")); |
| 1700 | } |
| 1701 | |
| 1702 | |
| 1703 | void |
| 1704 | start_tracing (char *notes) |
| 1705 | { |
| 1706 | VEC(breakpoint_p) *tp_vec = NULL; |
| 1707 | int ix; |
| 1708 | struct breakpoint *b; |
| 1709 | struct trace_state_variable *tsv; |
| 1710 | int any_enabled = 0, num_to_download = 0; |
| 1711 | int ret; |
| 1712 | |
| 1713 | tp_vec = all_tracepoints (); |
| 1714 | |
| 1715 | /* No point in tracing without any tracepoints... */ |
| 1716 | if (VEC_length (breakpoint_p, tp_vec) == 0) |
| 1717 | { |
| 1718 | VEC_free (breakpoint_p, tp_vec); |
| 1719 | error (_("No tracepoints defined, not starting trace")); |
| 1720 | } |
| 1721 | |
| 1722 | for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++) |
| 1723 | { |
| 1724 | struct tracepoint *t = (struct tracepoint *) b; |
| 1725 | struct bp_location *loc; |
| 1726 | |
| 1727 | if (b->enable_state == bp_enabled) |
| 1728 | any_enabled = 1; |
| 1729 | |
| 1730 | if ((b->type == bp_fast_tracepoint |
| 1731 | ? may_insert_fast_tracepoints |
| 1732 | : may_insert_tracepoints)) |
| 1733 | ++num_to_download; |
| 1734 | else |
| 1735 | warning (_("May not insert %stracepoints, skipping tracepoint %d"), |
| 1736 | (b->type == bp_fast_tracepoint ? "fast " : ""), b->number); |
| 1737 | } |
| 1738 | |
| 1739 | if (!any_enabled) |
| 1740 | { |
| 1741 | if (target_supports_enable_disable_tracepoint ()) |
| 1742 | warning (_("No tracepoints enabled")); |
| 1743 | else |
| 1744 | { |
| 1745 | /* No point in tracing with only disabled tracepoints that |
| 1746 | cannot be re-enabled. */ |
| 1747 | VEC_free (breakpoint_p, tp_vec); |
| 1748 | error (_("No tracepoints enabled, not starting trace")); |
| 1749 | } |
| 1750 | } |
| 1751 | |
| 1752 | if (num_to_download <= 0) |
| 1753 | { |
| 1754 | VEC_free (breakpoint_p, tp_vec); |
| 1755 | error (_("No tracepoints that may be downloaded, not starting trace")); |
| 1756 | } |
| 1757 | |
| 1758 | target_trace_init (); |
| 1759 | |
| 1760 | for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++) |
| 1761 | { |
| 1762 | struct tracepoint *t = (struct tracepoint *) b; |
| 1763 | struct bp_location *loc; |
| 1764 | int bp_location_downloaded = 0; |
| 1765 | |
| 1766 | /* Clear `inserted' flag. */ |
| 1767 | for (loc = b->loc; loc; loc = loc->next) |
| 1768 | loc->inserted = 0; |
| 1769 | |
| 1770 | if ((b->type == bp_fast_tracepoint |
| 1771 | ? !may_insert_fast_tracepoints |
| 1772 | : !may_insert_tracepoints)) |
| 1773 | continue; |
| 1774 | |
| 1775 | t->number_on_target = 0; |
| 1776 | |
| 1777 | for (loc = b->loc; loc; loc = loc->next) |
| 1778 | { |
| 1779 | /* Since tracepoint locations are never duplicated, `inserted' |
| 1780 | flag should be zero. */ |
| 1781 | gdb_assert (!loc->inserted); |
| 1782 | |
| 1783 | target_download_tracepoint (loc); |
| 1784 | |
| 1785 | loc->inserted = 1; |
| 1786 | bp_location_downloaded = 1; |
| 1787 | } |
| 1788 | |
| 1789 | t->number_on_target = b->number; |
| 1790 | |
| 1791 | for (loc = b->loc; loc; loc = loc->next) |
| 1792 | if (loc->probe != NULL) |
| 1793 | loc->probe->pops->set_semaphore (loc->probe, loc->gdbarch); |
| 1794 | |
| 1795 | if (bp_location_downloaded) |
| 1796 | observer_notify_breakpoint_modified (b); |
| 1797 | } |
| 1798 | VEC_free (breakpoint_p, tp_vec); |
| 1799 | |
| 1800 | /* Send down all the trace state variables too. */ |
| 1801 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 1802 | { |
| 1803 | target_download_trace_state_variable (tsv); |
| 1804 | } |
| 1805 | |
| 1806 | /* Tell target to treat text-like sections as transparent. */ |
| 1807 | target_trace_set_readonly_regions (); |
| 1808 | /* Set some mode flags. */ |
| 1809 | target_set_disconnected_tracing (disconnected_tracing); |
| 1810 | target_set_circular_trace_buffer (circular_trace_buffer); |
| 1811 | |
| 1812 | if (!notes) |
| 1813 | notes = trace_notes; |
| 1814 | ret = target_set_trace_notes (trace_user, notes, NULL); |
| 1815 | |
| 1816 | if (!ret && (trace_user || notes)) |
| 1817 | warning (_("Target does not support trace user/notes, info ignored")); |
| 1818 | |
| 1819 | /* Now insert traps and begin collecting data. */ |
| 1820 | target_trace_start (); |
| 1821 | |
| 1822 | /* Reset our local state. */ |
| 1823 | set_traceframe_num (-1); |
| 1824 | set_tracepoint_num (-1); |
| 1825 | set_traceframe_context (NULL); |
| 1826 | current_trace_status()->running = 1; |
| 1827 | clear_traceframe_info (); |
| 1828 | } |
| 1829 | |
| 1830 | /* The tstart command requests the target to start a new trace run. |
| 1831 | The command passes any arguments it has to the target verbatim, as |
| 1832 | an optional "trace note". This is useful as for instance a warning |
| 1833 | to other users if the trace runs disconnected, and you don't want |
| 1834 | anybody else messing with the target. */ |
| 1835 | |
| 1836 | static void |
| 1837 | trace_start_command (char *args, int from_tty) |
| 1838 | { |
| 1839 | dont_repeat (); /* Like "run", dangerous to repeat accidentally. */ |
| 1840 | |
| 1841 | if (current_trace_status ()->running) |
| 1842 | { |
| 1843 | if (from_tty |
| 1844 | && !query (_("A trace is running already. Start a new run? "))) |
| 1845 | error (_("New trace run not started.")); |
| 1846 | } |
| 1847 | |
| 1848 | start_tracing (args); |
| 1849 | } |
| 1850 | |
| 1851 | /* The tstop command stops the tracing run. The command passes any |
| 1852 | supplied arguments to the target verbatim as a "stop note"; if the |
| 1853 | target supports trace notes, then it will be reported back as part |
| 1854 | of the trace run's status. */ |
| 1855 | |
| 1856 | static void |
| 1857 | trace_stop_command (char *args, int from_tty) |
| 1858 | { |
| 1859 | if (!current_trace_status ()->running) |
| 1860 | error (_("Trace is not running.")); |
| 1861 | |
| 1862 | stop_tracing (args); |
| 1863 | } |
| 1864 | |
| 1865 | void |
| 1866 | stop_tracing (char *note) |
| 1867 | { |
| 1868 | int ret; |
| 1869 | VEC(breakpoint_p) *tp_vec = NULL; |
| 1870 | int ix; |
| 1871 | struct breakpoint *t; |
| 1872 | |
| 1873 | target_trace_stop (); |
| 1874 | |
| 1875 | tp_vec = all_tracepoints (); |
| 1876 | for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++) |
| 1877 | { |
| 1878 | struct bp_location *loc; |
| 1879 | |
| 1880 | if ((t->type == bp_fast_tracepoint |
| 1881 | ? !may_insert_fast_tracepoints |
| 1882 | : !may_insert_tracepoints)) |
| 1883 | continue; |
| 1884 | |
| 1885 | for (loc = t->loc; loc; loc = loc->next) |
| 1886 | { |
| 1887 | /* GDB can be totally absent in some disconnected trace scenarios, |
| 1888 | but we don't really care if this semaphore goes out of sync. |
| 1889 | That's why we are decrementing it here, but not taking care |
| 1890 | in other places. */ |
| 1891 | if (loc->probe != NULL) |
| 1892 | loc->probe->pops->clear_semaphore (loc->probe, loc->gdbarch); |
| 1893 | } |
| 1894 | } |
| 1895 | |
| 1896 | VEC_free (breakpoint_p, tp_vec); |
| 1897 | |
| 1898 | if (!note) |
| 1899 | note = trace_stop_notes; |
| 1900 | ret = target_set_trace_notes (NULL, NULL, note); |
| 1901 | |
| 1902 | if (!ret && note) |
| 1903 | warning (_("Target does not support trace notes, note ignored")); |
| 1904 | |
| 1905 | /* Should change in response to reply? */ |
| 1906 | current_trace_status ()->running = 0; |
| 1907 | } |
| 1908 | |
| 1909 | /* tstatus command */ |
| 1910 | static void |
| 1911 | trace_status_command (char *args, int from_tty) |
| 1912 | { |
| 1913 | struct trace_status *ts = current_trace_status (); |
| 1914 | int status, ix; |
| 1915 | VEC(breakpoint_p) *tp_vec = NULL; |
| 1916 | struct breakpoint *t; |
| 1917 | |
| 1918 | status = target_get_trace_status (ts); |
| 1919 | |
| 1920 | if (status == -1) |
| 1921 | { |
| 1922 | if (ts->from_file) |
| 1923 | printf_filtered (_("Using a trace file.\n")); |
| 1924 | else |
| 1925 | { |
| 1926 | printf_filtered (_("Trace can not be run on this target.\n")); |
| 1927 | return; |
| 1928 | } |
| 1929 | } |
| 1930 | |
| 1931 | if (!ts->running_known) |
| 1932 | { |
| 1933 | printf_filtered (_("Run/stop status is unknown.\n")); |
| 1934 | } |
| 1935 | else if (ts->running) |
| 1936 | { |
| 1937 | printf_filtered (_("Trace is running on the target.\n")); |
| 1938 | } |
| 1939 | else |
| 1940 | { |
| 1941 | switch (ts->stop_reason) |
| 1942 | { |
| 1943 | case trace_never_run: |
| 1944 | printf_filtered (_("No trace has been run on the target.\n")); |
| 1945 | break; |
| 1946 | case tstop_command: |
| 1947 | if (ts->stop_desc) |
| 1948 | printf_filtered (_("Trace stopped by a tstop command (%s).\n"), |
| 1949 | ts->stop_desc); |
| 1950 | else |
| 1951 | printf_filtered (_("Trace stopped by a tstop command.\n")); |
| 1952 | break; |
| 1953 | case trace_buffer_full: |
| 1954 | printf_filtered (_("Trace stopped because the buffer was full.\n")); |
| 1955 | break; |
| 1956 | case trace_disconnected: |
| 1957 | printf_filtered (_("Trace stopped because of disconnection.\n")); |
| 1958 | break; |
| 1959 | case tracepoint_passcount: |
| 1960 | printf_filtered (_("Trace stopped by tracepoint %d.\n"), |
| 1961 | ts->stopping_tracepoint); |
| 1962 | break; |
| 1963 | case tracepoint_error: |
| 1964 | if (ts->stopping_tracepoint) |
| 1965 | printf_filtered (_("Trace stopped by an " |
| 1966 | "error (%s, tracepoint %d).\n"), |
| 1967 | ts->stop_desc, ts->stopping_tracepoint); |
| 1968 | else |
| 1969 | printf_filtered (_("Trace stopped by an error (%s).\n"), |
| 1970 | ts->stop_desc); |
| 1971 | break; |
| 1972 | case trace_stop_reason_unknown: |
| 1973 | printf_filtered (_("Trace stopped for an unknown reason.\n")); |
| 1974 | break; |
| 1975 | default: |
| 1976 | printf_filtered (_("Trace stopped for some other reason (%d).\n"), |
| 1977 | ts->stop_reason); |
| 1978 | break; |
| 1979 | } |
| 1980 | } |
| 1981 | |
| 1982 | if (ts->traceframes_created >= 0 |
| 1983 | && ts->traceframe_count != ts->traceframes_created) |
| 1984 | { |
| 1985 | printf_filtered (_("Buffer contains %d trace " |
| 1986 | "frames (of %d created total).\n"), |
| 1987 | ts->traceframe_count, ts->traceframes_created); |
| 1988 | } |
| 1989 | else if (ts->traceframe_count >= 0) |
| 1990 | { |
| 1991 | printf_filtered (_("Collected %d trace frames.\n"), |
| 1992 | ts->traceframe_count); |
| 1993 | } |
| 1994 | |
| 1995 | if (ts->buffer_free >= 0) |
| 1996 | { |
| 1997 | if (ts->buffer_size >= 0) |
| 1998 | { |
| 1999 | printf_filtered (_("Trace buffer has %d bytes of %d bytes free"), |
| 2000 | ts->buffer_free, ts->buffer_size); |
| 2001 | if (ts->buffer_size > 0) |
| 2002 | printf_filtered (_(" (%d%% full)"), |
| 2003 | ((int) ((((long long) (ts->buffer_size |
| 2004 | - ts->buffer_free)) * 100) |
| 2005 | / ts->buffer_size))); |
| 2006 | printf_filtered (_(".\n")); |
| 2007 | } |
| 2008 | else |
| 2009 | printf_filtered (_("Trace buffer has %d bytes free.\n"), |
| 2010 | ts->buffer_free); |
| 2011 | } |
| 2012 | |
| 2013 | if (ts->disconnected_tracing) |
| 2014 | printf_filtered (_("Trace will continue if GDB disconnects.\n")); |
| 2015 | else |
| 2016 | printf_filtered (_("Trace will stop if GDB disconnects.\n")); |
| 2017 | |
| 2018 | if (ts->circular_buffer) |
| 2019 | printf_filtered (_("Trace buffer is circular.\n")); |
| 2020 | |
| 2021 | if (ts->user_name && strlen (ts->user_name) > 0) |
| 2022 | printf_filtered (_("Trace user is %s.\n"), ts->user_name); |
| 2023 | |
| 2024 | if (ts->notes && strlen (ts->notes) > 0) |
| 2025 | printf_filtered (_("Trace notes: %s.\n"), ts->notes); |
| 2026 | |
| 2027 | /* Now report on what we're doing with tfind. */ |
| 2028 | if (traceframe_number >= 0) |
| 2029 | printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"), |
| 2030 | traceframe_number, tracepoint_number); |
| 2031 | else |
| 2032 | printf_filtered (_("Not looking at any trace frame.\n")); |
| 2033 | |
| 2034 | /* Report start/stop times if supplied. */ |
| 2035 | if (ts->start_time) |
| 2036 | { |
| 2037 | if (ts->stop_time) |
| 2038 | { |
| 2039 | LONGEST run_time = ts->stop_time - ts->start_time; |
| 2040 | |
| 2041 | /* Reporting a run time is more readable than two long numbers. */ |
| 2042 | printf_filtered (_("Trace started at %ld.%06ld secs, stopped %ld.%06ld secs later.\n"), |
| 2043 | (long int) ts->start_time / 1000000, |
| 2044 | (long int) ts->start_time % 1000000, |
| 2045 | (long int) run_time / 1000000, |
| 2046 | (long int) run_time % 1000000); |
| 2047 | } |
| 2048 | else |
| 2049 | printf_filtered (_("Trace started at %ld.%06ld secs.\n"), |
| 2050 | (long int) ts->start_time / 1000000, |
| 2051 | (long int) ts->start_time % 1000000); |
| 2052 | } |
| 2053 | else if (ts->stop_time) |
| 2054 | printf_filtered (_("Trace stopped at %ld.%06ld secs.\n"), |
| 2055 | (long int) ts->stop_time / 1000000, |
| 2056 | (long int) ts->stop_time % 1000000); |
| 2057 | |
| 2058 | /* Now report any per-tracepoint status available. */ |
| 2059 | tp_vec = all_tracepoints (); |
| 2060 | |
| 2061 | for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, t); ix++) |
| 2062 | target_get_tracepoint_status (t, NULL); |
| 2063 | |
| 2064 | VEC_free (breakpoint_p, tp_vec); |
| 2065 | } |
| 2066 | |
| 2067 | /* Report the trace status to uiout, in a way suitable for MI, and not |
| 2068 | suitable for CLI. If ON_STOP is true, suppress a few fields that |
| 2069 | are not meaningful in the -trace-stop response. |
| 2070 | |
| 2071 | The implementation is essentially parallel to trace_status_command, but |
| 2072 | merging them will result in unreadable code. */ |
| 2073 | void |
| 2074 | trace_status_mi (int on_stop) |
| 2075 | { |
| 2076 | struct ui_out *uiout = current_uiout; |
| 2077 | struct trace_status *ts = current_trace_status (); |
| 2078 | int status; |
| 2079 | |
| 2080 | status = target_get_trace_status (ts); |
| 2081 | |
| 2082 | if (status == -1 && !ts->from_file) |
| 2083 | { |
| 2084 | ui_out_field_string (uiout, "supported", "0"); |
| 2085 | return; |
| 2086 | } |
| 2087 | |
| 2088 | if (ts->from_file) |
| 2089 | ui_out_field_string (uiout, "supported", "file"); |
| 2090 | else if (!on_stop) |
| 2091 | ui_out_field_string (uiout, "supported", "1"); |
| 2092 | |
| 2093 | gdb_assert (ts->running_known); |
| 2094 | |
| 2095 | if (ts->running) |
| 2096 | { |
| 2097 | ui_out_field_string (uiout, "running", "1"); |
| 2098 | |
| 2099 | /* Unlike CLI, do not show the state of 'disconnected-tracing' variable. |
| 2100 | Given that the frontend gets the status either on -trace-stop, or from |
| 2101 | -trace-status after re-connection, it does not seem like this |
| 2102 | information is necessary for anything. It is not necessary for either |
| 2103 | figuring the vital state of the target nor for navigation of trace |
| 2104 | frames. If the frontend wants to show the current state is some |
| 2105 | configure dialog, it can request the value when such dialog is |
| 2106 | invoked by the user. */ |
| 2107 | } |
| 2108 | else |
| 2109 | { |
| 2110 | char *stop_reason = NULL; |
| 2111 | int stopping_tracepoint = -1; |
| 2112 | |
| 2113 | if (!on_stop) |
| 2114 | ui_out_field_string (uiout, "running", "0"); |
| 2115 | |
| 2116 | if (ts->stop_reason != trace_stop_reason_unknown) |
| 2117 | { |
| 2118 | switch (ts->stop_reason) |
| 2119 | { |
| 2120 | case tstop_command: |
| 2121 | stop_reason = "request"; |
| 2122 | break; |
| 2123 | case trace_buffer_full: |
| 2124 | stop_reason = "overflow"; |
| 2125 | break; |
| 2126 | case trace_disconnected: |
| 2127 | stop_reason = "disconnection"; |
| 2128 | break; |
| 2129 | case tracepoint_passcount: |
| 2130 | stop_reason = "passcount"; |
| 2131 | stopping_tracepoint = ts->stopping_tracepoint; |
| 2132 | break; |
| 2133 | case tracepoint_error: |
| 2134 | stop_reason = "error"; |
| 2135 | stopping_tracepoint = ts->stopping_tracepoint; |
| 2136 | break; |
| 2137 | } |
| 2138 | |
| 2139 | if (stop_reason) |
| 2140 | { |
| 2141 | ui_out_field_string (uiout, "stop-reason", stop_reason); |
| 2142 | if (stopping_tracepoint != -1) |
| 2143 | ui_out_field_int (uiout, "stopping-tracepoint", |
| 2144 | stopping_tracepoint); |
| 2145 | if (ts->stop_reason == tracepoint_error) |
| 2146 | ui_out_field_string (uiout, "error-description", |
| 2147 | ts->stop_desc); |
| 2148 | } |
| 2149 | } |
| 2150 | } |
| 2151 | |
| 2152 | if (ts->traceframe_count != -1) |
| 2153 | ui_out_field_int (uiout, "frames", ts->traceframe_count); |
| 2154 | if (ts->traceframes_created != -1) |
| 2155 | ui_out_field_int (uiout, "frames-created", ts->traceframes_created); |
| 2156 | if (ts->buffer_size != -1) |
| 2157 | ui_out_field_int (uiout, "buffer-size", ts->buffer_size); |
| 2158 | if (ts->buffer_free != -1) |
| 2159 | ui_out_field_int (uiout, "buffer-free", ts->buffer_free); |
| 2160 | |
| 2161 | ui_out_field_int (uiout, "disconnected", ts->disconnected_tracing); |
| 2162 | ui_out_field_int (uiout, "circular", ts->circular_buffer); |
| 2163 | |
| 2164 | ui_out_field_string (uiout, "user-name", ts->user_name); |
| 2165 | ui_out_field_string (uiout, "notes", ts->notes); |
| 2166 | |
| 2167 | { |
| 2168 | char buf[100]; |
| 2169 | |
| 2170 | xsnprintf (buf, sizeof buf, "%ld.%06ld", |
| 2171 | (long int) ts->start_time / 1000000, |
| 2172 | (long int) ts->start_time % 1000000); |
| 2173 | ui_out_field_string (uiout, "start-time", buf); |
| 2174 | xsnprintf (buf, sizeof buf, "%ld.%06ld", |
| 2175 | (long int) ts->stop_time / 1000000, |
| 2176 | (long int) ts->stop_time % 1000000); |
| 2177 | ui_out_field_string (uiout, "stop-time", buf); |
| 2178 | } |
| 2179 | } |
| 2180 | |
| 2181 | /* This function handles the details of what to do about an ongoing |
| 2182 | tracing run if the user has asked to detach or otherwise disconnect |
| 2183 | from the target. */ |
| 2184 | void |
| 2185 | disconnect_tracing (int from_tty) |
| 2186 | { |
| 2187 | /* It can happen that the target that was tracing went away on its |
| 2188 | own, and we didn't notice. Get a status update, and if the |
| 2189 | current target doesn't even do tracing, then assume it's not |
| 2190 | running anymore. */ |
| 2191 | if (target_get_trace_status (current_trace_status ()) < 0) |
| 2192 | current_trace_status ()->running = 0; |
| 2193 | |
| 2194 | /* If running interactively, give the user the option to cancel and |
| 2195 | then decide what to do differently with the run. Scripts are |
| 2196 | just going to disconnect and let the target deal with it, |
| 2197 | according to how it's been instructed previously via |
| 2198 | disconnected-tracing. */ |
| 2199 | if (current_trace_status ()->running && from_tty) |
| 2200 | { |
| 2201 | process_tracepoint_on_disconnect (); |
| 2202 | |
| 2203 | if (current_trace_status ()->disconnected_tracing) |
| 2204 | { |
| 2205 | if (!query (_("Trace is running and will " |
| 2206 | "continue after detach; detach anyway? "))) |
| 2207 | error (_("Not confirmed.")); |
| 2208 | } |
| 2209 | else |
| 2210 | { |
| 2211 | if (!query (_("Trace is running but will " |
| 2212 | "stop on detach; detach anyway? "))) |
| 2213 | error (_("Not confirmed.")); |
| 2214 | } |
| 2215 | } |
| 2216 | |
| 2217 | /* Also we want to be out of tfind mode, otherwise things can get |
| 2218 | confusing upon reconnection. Just use these calls instead of |
| 2219 | full tfind_1 behavior because we're in the middle of detaching, |
| 2220 | and there's no point to updating current stack frame etc. */ |
| 2221 | set_current_traceframe (-1); |
| 2222 | set_tracepoint_num (-1); |
| 2223 | set_traceframe_context (NULL); |
| 2224 | } |
| 2225 | |
| 2226 | /* Worker function for the various flavors of the tfind command. */ |
| 2227 | void |
| 2228 | tfind_1 (enum trace_find_type type, int num, |
| 2229 | ULONGEST addr1, ULONGEST addr2, |
| 2230 | int from_tty) |
| 2231 | { |
| 2232 | int target_frameno = -1, target_tracept = -1; |
| 2233 | struct frame_id old_frame_id = null_frame_id; |
| 2234 | struct tracepoint *tp; |
| 2235 | struct ui_out *uiout = current_uiout; |
| 2236 | |
| 2237 | /* Only try to get the current stack frame if we have a chance of |
| 2238 | succeeding. In particular, if we're trying to get a first trace |
| 2239 | frame while all threads are running, it's not going to succeed, |
| 2240 | so leave it with a default value and let the frame comparison |
| 2241 | below (correctly) decide to print out the source location of the |
| 2242 | trace frame. */ |
| 2243 | if (!(type == tfind_number && num == -1) |
| 2244 | && (has_stack_frames () || traceframe_number >= 0)) |
| 2245 | old_frame_id = get_frame_id (get_current_frame ()); |
| 2246 | |
| 2247 | target_frameno = target_trace_find (type, num, addr1, addr2, |
| 2248 | &target_tracept); |
| 2249 | |
| 2250 | if (type == tfind_number |
| 2251 | && num == -1 |
| 2252 | && target_frameno == -1) |
| 2253 | { |
| 2254 | /* We told the target to get out of tfind mode, and it did. */ |
| 2255 | } |
| 2256 | else if (target_frameno == -1) |
| 2257 | { |
| 2258 | /* A request for a non-existent trace frame has failed. |
| 2259 | Our response will be different, depending on FROM_TTY: |
| 2260 | |
| 2261 | If FROM_TTY is true, meaning that this command was |
| 2262 | typed interactively by the user, then give an error |
| 2263 | and DO NOT change the state of traceframe_number etc. |
| 2264 | |
| 2265 | However if FROM_TTY is false, meaning that we're either |
| 2266 | in a script, a loop, or a user-defined command, then |
| 2267 | DON'T give an error, but DO change the state of |
| 2268 | traceframe_number etc. to invalid. |
| 2269 | |
| 2270 | The rationalle is that if you typed the command, you |
| 2271 | might just have committed a typo or something, and you'd |
| 2272 | like to NOT lose your current debugging state. However |
| 2273 | if you're in a user-defined command or especially in a |
| 2274 | loop, then you need a way to detect that the command |
| 2275 | failed WITHOUT aborting. This allows you to write |
| 2276 | scripts that search thru the trace buffer until the end, |
| 2277 | and then continue on to do something else. */ |
| 2278 | |
| 2279 | if (from_tty) |
| 2280 | error (_("Target failed to find requested trace frame.")); |
| 2281 | else |
| 2282 | { |
| 2283 | if (info_verbose) |
| 2284 | printf_filtered ("End of trace buffer.\n"); |
| 2285 | #if 0 /* dubious now? */ |
| 2286 | /* The following will not recurse, since it's |
| 2287 | special-cased. */ |
| 2288 | trace_find_command ("-1", from_tty); |
| 2289 | #endif |
| 2290 | } |
| 2291 | } |
| 2292 | |
| 2293 | tp = get_tracepoint_by_number_on_target (target_tracept); |
| 2294 | |
| 2295 | reinit_frame_cache (); |
| 2296 | target_dcache_invalidate (); |
| 2297 | |
| 2298 | set_tracepoint_num (tp ? tp->base.number : target_tracept); |
| 2299 | |
| 2300 | if (target_frameno != get_traceframe_number ()) |
| 2301 | observer_notify_traceframe_changed (target_frameno, tracepoint_number); |
| 2302 | |
| 2303 | set_current_traceframe (target_frameno); |
| 2304 | |
| 2305 | if (target_frameno == -1) |
| 2306 | set_traceframe_context (NULL); |
| 2307 | else |
| 2308 | set_traceframe_context (get_current_frame ()); |
| 2309 | |
| 2310 | if (traceframe_number >= 0) |
| 2311 | { |
| 2312 | /* Use different branches for MI and CLI to make CLI messages |
| 2313 | i18n-eable. */ |
| 2314 | if (ui_out_is_mi_like_p (uiout)) |
| 2315 | { |
| 2316 | ui_out_field_string (uiout, "found", "1"); |
| 2317 | ui_out_field_int (uiout, "tracepoint", tracepoint_number); |
| 2318 | ui_out_field_int (uiout, "traceframe", traceframe_number); |
| 2319 | } |
| 2320 | else |
| 2321 | { |
| 2322 | printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"), |
| 2323 | traceframe_number, tracepoint_number); |
| 2324 | } |
| 2325 | } |
| 2326 | else |
| 2327 | { |
| 2328 | if (ui_out_is_mi_like_p (uiout)) |
| 2329 | ui_out_field_string (uiout, "found", "0"); |
| 2330 | else if (type == tfind_number && num == -1) |
| 2331 | printf_unfiltered (_("No longer looking at any trace frame\n")); |
| 2332 | else /* This case may never occur, check. */ |
| 2333 | printf_unfiltered (_("No trace frame found\n")); |
| 2334 | } |
| 2335 | |
| 2336 | /* If we're in nonstop mode and getting out of looking at trace |
| 2337 | frames, there won't be any current frame to go back to and |
| 2338 | display. */ |
| 2339 | if (from_tty |
| 2340 | && (has_stack_frames () || traceframe_number >= 0)) |
| 2341 | { |
| 2342 | enum print_what print_what; |
| 2343 | |
| 2344 | /* NOTE: in imitation of the step command, try to determine |
| 2345 | whether we have made a transition from one function to |
| 2346 | another. If so, we'll print the "stack frame" (ie. the new |
| 2347 | function and it's arguments) -- otherwise we'll just show the |
| 2348 | new source line. */ |
| 2349 | |
| 2350 | if (frame_id_eq (old_frame_id, |
| 2351 | get_frame_id (get_current_frame ()))) |
| 2352 | print_what = SRC_LINE; |
| 2353 | else |
| 2354 | print_what = SRC_AND_LOC; |
| 2355 | |
| 2356 | print_stack_frame (get_selected_frame (NULL), 1, print_what); |
| 2357 | do_displays (); |
| 2358 | } |
| 2359 | } |
| 2360 | |
| 2361 | /* trace_find_command takes a trace frame number n, |
| 2362 | sends "QTFrame:<n>" to the target, |
| 2363 | and accepts a reply that may contain several optional pieces |
| 2364 | of information: a frame number, a tracepoint number, and an |
| 2365 | indication of whether this is a trap frame or a stepping frame. |
| 2366 | |
| 2367 | The minimal response is just "OK" (which indicates that the |
| 2368 | target does not give us a frame number or a tracepoint number). |
| 2369 | Instead of that, the target may send us a string containing |
| 2370 | any combination of: |
| 2371 | F<hexnum> (gives the selected frame number) |
| 2372 | T<hexnum> (gives the selected tracepoint number) |
| 2373 | */ |
| 2374 | |
| 2375 | /* tfind command */ |
| 2376 | static void |
| 2377 | trace_find_command (char *args, int from_tty) |
| 2378 | { /* This should only be called with a numeric argument. */ |
| 2379 | int frameno = -1; |
| 2380 | |
| 2381 | if (current_trace_status ()->running && !current_trace_status ()->from_file) |
| 2382 | error (_("May not look at trace frames while trace is running.")); |
| 2383 | |
| 2384 | if (args == 0 || *args == 0) |
| 2385 | { /* TFIND with no args means find NEXT trace frame. */ |
| 2386 | if (traceframe_number == -1) |
| 2387 | frameno = 0; /* "next" is first one. */ |
| 2388 | else |
| 2389 | frameno = traceframe_number + 1; |
| 2390 | } |
| 2391 | else if (0 == strcmp (args, "-")) |
| 2392 | { |
| 2393 | if (traceframe_number == -1) |
| 2394 | error (_("not debugging trace buffer")); |
| 2395 | else if (from_tty && traceframe_number == 0) |
| 2396 | error (_("already at start of trace buffer")); |
| 2397 | |
| 2398 | frameno = traceframe_number - 1; |
| 2399 | } |
| 2400 | /* A hack to work around eval's need for fp to have been collected. */ |
| 2401 | else if (0 == strcmp (args, "-1")) |
| 2402 | frameno = -1; |
| 2403 | else |
| 2404 | frameno = parse_and_eval_long (args); |
| 2405 | |
| 2406 | if (frameno < -1) |
| 2407 | error (_("invalid input (%d is less than zero)"), frameno); |
| 2408 | |
| 2409 | tfind_1 (tfind_number, frameno, 0, 0, from_tty); |
| 2410 | } |
| 2411 | |
| 2412 | /* tfind end */ |
| 2413 | static void |
| 2414 | trace_find_end_command (char *args, int from_tty) |
| 2415 | { |
| 2416 | trace_find_command ("-1", from_tty); |
| 2417 | } |
| 2418 | |
| 2419 | /* tfind start */ |
| 2420 | static void |
| 2421 | trace_find_start_command (char *args, int from_tty) |
| 2422 | { |
| 2423 | trace_find_command ("0", from_tty); |
| 2424 | } |
| 2425 | |
| 2426 | /* tfind pc command */ |
| 2427 | static void |
| 2428 | trace_find_pc_command (char *args, int from_tty) |
| 2429 | { |
| 2430 | CORE_ADDR pc; |
| 2431 | |
| 2432 | if (current_trace_status ()->running && !current_trace_status ()->from_file) |
| 2433 | error (_("May not look at trace frames while trace is running.")); |
| 2434 | |
| 2435 | if (args == 0 || *args == 0) |
| 2436 | pc = regcache_read_pc (get_current_regcache ()); |
| 2437 | else |
| 2438 | pc = parse_and_eval_address (args); |
| 2439 | |
| 2440 | tfind_1 (tfind_pc, 0, pc, 0, from_tty); |
| 2441 | } |
| 2442 | |
| 2443 | /* tfind tracepoint command */ |
| 2444 | static void |
| 2445 | trace_find_tracepoint_command (char *args, int from_tty) |
| 2446 | { |
| 2447 | int tdp; |
| 2448 | struct tracepoint *tp; |
| 2449 | |
| 2450 | if (current_trace_status ()->running && !current_trace_status ()->from_file) |
| 2451 | error (_("May not look at trace frames while trace is running.")); |
| 2452 | |
| 2453 | if (args == 0 || *args == 0) |
| 2454 | { |
| 2455 | if (tracepoint_number == -1) |
| 2456 | error (_("No current tracepoint -- please supply an argument.")); |
| 2457 | else |
| 2458 | tdp = tracepoint_number; /* Default is current TDP. */ |
| 2459 | } |
| 2460 | else |
| 2461 | tdp = parse_and_eval_long (args); |
| 2462 | |
| 2463 | /* If we have the tracepoint on hand, use the number that the |
| 2464 | target knows about (which may be different if we disconnected |
| 2465 | and reconnected). */ |
| 2466 | tp = get_tracepoint (tdp); |
| 2467 | if (tp) |
| 2468 | tdp = tp->number_on_target; |
| 2469 | |
| 2470 | tfind_1 (tfind_tp, tdp, 0, 0, from_tty); |
| 2471 | } |
| 2472 | |
| 2473 | /* TFIND LINE command: |
| 2474 | |
| 2475 | This command will take a sourceline for argument, just like BREAK |
| 2476 | or TRACE (ie. anything that "decode_line_1" can handle). |
| 2477 | |
| 2478 | With no argument, this command will find the next trace frame |
| 2479 | corresponding to a source line OTHER THAN THE CURRENT ONE. */ |
| 2480 | |
| 2481 | static void |
| 2482 | trace_find_line_command (char *args, int from_tty) |
| 2483 | { |
| 2484 | static CORE_ADDR start_pc, end_pc; |
| 2485 | struct symtabs_and_lines sals; |
| 2486 | struct symtab_and_line sal; |
| 2487 | struct cleanup *old_chain; |
| 2488 | |
| 2489 | if (current_trace_status ()->running && !current_trace_status ()->from_file) |
| 2490 | error (_("May not look at trace frames while trace is running.")); |
| 2491 | |
| 2492 | if (args == 0 || *args == 0) |
| 2493 | { |
| 2494 | sal = find_pc_line (get_frame_pc (get_current_frame ()), 0); |
| 2495 | sals.nelts = 1; |
| 2496 | sals.sals = (struct symtab_and_line *) |
| 2497 | xmalloc (sizeof (struct symtab_and_line)); |
| 2498 | sals.sals[0] = sal; |
| 2499 | } |
| 2500 | else |
| 2501 | { |
| 2502 | sals = decode_line_with_current_source (args, DECODE_LINE_FUNFIRSTLINE); |
| 2503 | sal = sals.sals[0]; |
| 2504 | } |
| 2505 | |
| 2506 | old_chain = make_cleanup (xfree, sals.sals); |
| 2507 | if (sal.symtab == 0) |
| 2508 | error (_("No line number information available.")); |
| 2509 | |
| 2510 | if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc)) |
| 2511 | { |
| 2512 | if (start_pc == end_pc) |
| 2513 | { |
| 2514 | printf_filtered ("Line %d of \"%s\"", |
| 2515 | sal.line, |
| 2516 | symtab_to_filename_for_display (sal.symtab)); |
| 2517 | wrap_here (" "); |
| 2518 | printf_filtered (" is at address "); |
| 2519 | print_address (get_current_arch (), start_pc, gdb_stdout); |
| 2520 | wrap_here (" "); |
| 2521 | printf_filtered (" but contains no code.\n"); |
| 2522 | sal = find_pc_line (start_pc, 0); |
| 2523 | if (sal.line > 0 |
| 2524 | && find_line_pc_range (sal, &start_pc, &end_pc) |
| 2525 | && start_pc != end_pc) |
| 2526 | printf_filtered ("Attempting to find line %d instead.\n", |
| 2527 | sal.line); |
| 2528 | else |
| 2529 | error (_("Cannot find a good line.")); |
| 2530 | } |
| 2531 | } |
| 2532 | else |
| 2533 | /* Is there any case in which we get here, and have an address |
| 2534 | which the user would want to see? If we have debugging |
| 2535 | symbols and no line numbers? */ |
| 2536 | error (_("Line number %d is out of range for \"%s\"."), |
| 2537 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
| 2538 | |
| 2539 | /* Find within range of stated line. */ |
| 2540 | if (args && *args) |
| 2541 | tfind_1 (tfind_range, 0, start_pc, end_pc - 1, from_tty); |
| 2542 | else |
| 2543 | tfind_1 (tfind_outside, 0, start_pc, end_pc - 1, from_tty); |
| 2544 | do_cleanups (old_chain); |
| 2545 | } |
| 2546 | |
| 2547 | /* tfind range command */ |
| 2548 | static void |
| 2549 | trace_find_range_command (char *args, int from_tty) |
| 2550 | { |
| 2551 | static CORE_ADDR start, stop; |
| 2552 | char *tmp; |
| 2553 | |
| 2554 | if (current_trace_status ()->running && !current_trace_status ()->from_file) |
| 2555 | error (_("May not look at trace frames while trace is running.")); |
| 2556 | |
| 2557 | if (args == 0 || *args == 0) |
| 2558 | { /* XXX FIXME: what should default behavior be? */ |
| 2559 | printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n"); |
| 2560 | return; |
| 2561 | } |
| 2562 | |
| 2563 | if (0 != (tmp = strchr (args, ','))) |
| 2564 | { |
| 2565 | *tmp++ = '\0'; /* Terminate start address. */ |
| 2566 | while (isspace ((int) *tmp)) |
| 2567 | tmp++; |
| 2568 | start = parse_and_eval_address (args); |
| 2569 | stop = parse_and_eval_address (tmp); |
| 2570 | } |
| 2571 | else |
| 2572 | { /* No explicit end address? */ |
| 2573 | start = parse_and_eval_address (args); |
| 2574 | stop = start + 1; /* ??? */ |
| 2575 | } |
| 2576 | |
| 2577 | tfind_1 (tfind_range, 0, start, stop, from_tty); |
| 2578 | } |
| 2579 | |
| 2580 | /* tfind outside command */ |
| 2581 | static void |
| 2582 | trace_find_outside_command (char *args, int from_tty) |
| 2583 | { |
| 2584 | CORE_ADDR start, stop; |
| 2585 | char *tmp; |
| 2586 | |
| 2587 | if (current_trace_status ()->running && !current_trace_status ()->from_file) |
| 2588 | error (_("May not look at trace frames while trace is running.")); |
| 2589 | |
| 2590 | if (args == 0 || *args == 0) |
| 2591 | { /* XXX FIXME: what should default behavior be? */ |
| 2592 | printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n"); |
| 2593 | return; |
| 2594 | } |
| 2595 | |
| 2596 | if (0 != (tmp = strchr (args, ','))) |
| 2597 | { |
| 2598 | *tmp++ = '\0'; /* Terminate start address. */ |
| 2599 | while (isspace ((int) *tmp)) |
| 2600 | tmp++; |
| 2601 | start = parse_and_eval_address (args); |
| 2602 | stop = parse_and_eval_address (tmp); |
| 2603 | } |
| 2604 | else |
| 2605 | { /* No explicit end address? */ |
| 2606 | start = parse_and_eval_address (args); |
| 2607 | stop = start + 1; /* ??? */ |
| 2608 | } |
| 2609 | |
| 2610 | tfind_1 (tfind_outside, 0, start, stop, from_tty); |
| 2611 | } |
| 2612 | |
| 2613 | /* info scope command: list the locals for a scope. */ |
| 2614 | static void |
| 2615 | scope_info (char *args, int from_tty) |
| 2616 | { |
| 2617 | struct symtabs_and_lines sals; |
| 2618 | struct symbol *sym; |
| 2619 | struct minimal_symbol *msym; |
| 2620 | struct block *block; |
| 2621 | const char *symname; |
| 2622 | char *save_args = args; |
| 2623 | struct block_iterator iter; |
| 2624 | int j, count = 0; |
| 2625 | struct gdbarch *gdbarch; |
| 2626 | int regno; |
| 2627 | |
| 2628 | if (args == 0 || *args == 0) |
| 2629 | error (_("requires an argument (function, " |
| 2630 | "line or *addr) to define a scope")); |
| 2631 | |
| 2632 | sals = decode_line_1 (&args, DECODE_LINE_FUNFIRSTLINE, NULL, 0); |
| 2633 | if (sals.nelts == 0) |
| 2634 | return; /* Presumably decode_line_1 has already warned. */ |
| 2635 | |
| 2636 | /* Resolve line numbers to PC. */ |
| 2637 | resolve_sal_pc (&sals.sals[0]); |
| 2638 | block = block_for_pc (sals.sals[0].pc); |
| 2639 | |
| 2640 | while (block != 0) |
| 2641 | { |
| 2642 | QUIT; /* Allow user to bail out with ^C. */ |
| 2643 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
| 2644 | { |
| 2645 | QUIT; /* Allow user to bail out with ^C. */ |
| 2646 | if (count == 0) |
| 2647 | printf_filtered ("Scope for %s:\n", save_args); |
| 2648 | count++; |
| 2649 | |
| 2650 | symname = SYMBOL_PRINT_NAME (sym); |
| 2651 | if (symname == NULL || *symname == '\0') |
| 2652 | continue; /* Probably botched, certainly useless. */ |
| 2653 | |
| 2654 | gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile); |
| 2655 | |
| 2656 | printf_filtered ("Symbol %s is ", symname); |
| 2657 | switch (SYMBOL_CLASS (sym)) |
| 2658 | { |
| 2659 | default: |
| 2660 | case LOC_UNDEF: /* Messed up symbol? */ |
| 2661 | printf_filtered ("a bogus symbol, class %d.\n", |
| 2662 | SYMBOL_CLASS (sym)); |
| 2663 | count--; /* Don't count this one. */ |
| 2664 | continue; |
| 2665 | case LOC_CONST: |
| 2666 | printf_filtered ("a constant with value %s (%s)", |
| 2667 | plongest (SYMBOL_VALUE (sym)), |
| 2668 | hex_string (SYMBOL_VALUE (sym))); |
| 2669 | break; |
| 2670 | case LOC_CONST_BYTES: |
| 2671 | printf_filtered ("constant bytes: "); |
| 2672 | if (SYMBOL_TYPE (sym)) |
| 2673 | for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++) |
| 2674 | fprintf_filtered (gdb_stdout, " %02x", |
| 2675 | (unsigned) SYMBOL_VALUE_BYTES (sym)[j]); |
| 2676 | break; |
| 2677 | case LOC_STATIC: |
| 2678 | printf_filtered ("in static storage at address "); |
| 2679 | printf_filtered ("%s", paddress (gdbarch, |
| 2680 | SYMBOL_VALUE_ADDRESS (sym))); |
| 2681 | break; |
| 2682 | case LOC_REGISTER: |
| 2683 | /* GDBARCH is the architecture associated with the objfile |
| 2684 | the symbol is defined in; the target architecture may be |
| 2685 | different, and may provide additional registers. However, |
| 2686 | we do not know the target architecture at this point. |
| 2687 | We assume the objfile architecture will contain all the |
| 2688 | standard registers that occur in debug info in that |
| 2689 | objfile. */ |
| 2690 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, |
| 2691 | gdbarch); |
| 2692 | |
| 2693 | if (SYMBOL_IS_ARGUMENT (sym)) |
| 2694 | printf_filtered ("an argument in register $%s", |
| 2695 | gdbarch_register_name (gdbarch, regno)); |
| 2696 | else |
| 2697 | printf_filtered ("a local variable in register $%s", |
| 2698 | gdbarch_register_name (gdbarch, regno)); |
| 2699 | break; |
| 2700 | case LOC_ARG: |
| 2701 | printf_filtered ("an argument at stack/frame offset %s", |
| 2702 | plongest (SYMBOL_VALUE (sym))); |
| 2703 | break; |
| 2704 | case LOC_LOCAL: |
| 2705 | printf_filtered ("a local variable at frame offset %s", |
| 2706 | plongest (SYMBOL_VALUE (sym))); |
| 2707 | break; |
| 2708 | case LOC_REF_ARG: |
| 2709 | printf_filtered ("a reference argument at offset %s", |
| 2710 | plongest (SYMBOL_VALUE (sym))); |
| 2711 | break; |
| 2712 | case LOC_REGPARM_ADDR: |
| 2713 | /* Note comment at LOC_REGISTER. */ |
| 2714 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, |
| 2715 | gdbarch); |
| 2716 | printf_filtered ("the address of an argument, in register $%s", |
| 2717 | gdbarch_register_name (gdbarch, regno)); |
| 2718 | break; |
| 2719 | case LOC_TYPEDEF: |
| 2720 | printf_filtered ("a typedef.\n"); |
| 2721 | continue; |
| 2722 | case LOC_LABEL: |
| 2723 | printf_filtered ("a label at address "); |
| 2724 | printf_filtered ("%s", paddress (gdbarch, |
| 2725 | SYMBOL_VALUE_ADDRESS (sym))); |
| 2726 | break; |
| 2727 | case LOC_BLOCK: |
| 2728 | printf_filtered ("a function at address "); |
| 2729 | printf_filtered ("%s", |
| 2730 | paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (sym)))); |
| 2731 | break; |
| 2732 | case LOC_UNRESOLVED: |
| 2733 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
| 2734 | NULL, NULL); |
| 2735 | if (msym == NULL) |
| 2736 | printf_filtered ("Unresolved Static"); |
| 2737 | else |
| 2738 | { |
| 2739 | printf_filtered ("static storage at address "); |
| 2740 | printf_filtered ("%s", |
| 2741 | paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msym))); |
| 2742 | } |
| 2743 | break; |
| 2744 | case LOC_OPTIMIZED_OUT: |
| 2745 | printf_filtered ("optimized out.\n"); |
| 2746 | continue; |
| 2747 | case LOC_COMPUTED: |
| 2748 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, |
| 2749 | BLOCK_START (block), |
| 2750 | gdb_stdout); |
| 2751 | break; |
| 2752 | } |
| 2753 | if (SYMBOL_TYPE (sym)) |
| 2754 | printf_filtered (", length %d.\n", |
| 2755 | TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)))); |
| 2756 | } |
| 2757 | if (BLOCK_FUNCTION (block)) |
| 2758 | break; |
| 2759 | else |
| 2760 | block = BLOCK_SUPERBLOCK (block); |
| 2761 | } |
| 2762 | if (count <= 0) |
| 2763 | printf_filtered ("Scope for %s contains no locals or arguments.\n", |
| 2764 | save_args); |
| 2765 | } |
| 2766 | |
| 2767 | /* worker function (cleanup) */ |
| 2768 | static void |
| 2769 | replace_comma (void *data) |
| 2770 | { |
| 2771 | char *comma = data; |
| 2772 | *comma = ','; |
| 2773 | } |
| 2774 | |
| 2775 | |
| 2776 | /* Helper for trace_dump_command. Dump the action list starting at |
| 2777 | ACTION. STEPPING_ACTIONS is true if we're iterating over the |
| 2778 | actions of the body of a while-stepping action. STEPPING_FRAME is |
| 2779 | set if the current traceframe was determined to be a while-stepping |
| 2780 | traceframe. */ |
| 2781 | |
| 2782 | static void |
| 2783 | trace_dump_actions (struct command_line *action, |
| 2784 | int stepping_actions, int stepping_frame, |
| 2785 | int from_tty) |
| 2786 | { |
| 2787 | char *action_exp, *next_comma; |
| 2788 | |
| 2789 | for (; action != NULL; action = action->next) |
| 2790 | { |
| 2791 | struct cmd_list_element *cmd; |
| 2792 | |
| 2793 | QUIT; /* Allow user to bail out with ^C. */ |
| 2794 | action_exp = action->line; |
| 2795 | while (isspace ((int) *action_exp)) |
| 2796 | action_exp++; |
| 2797 | |
| 2798 | /* The collection actions to be done while stepping are |
| 2799 | bracketed by the commands "while-stepping" and "end". */ |
| 2800 | |
| 2801 | if (*action_exp == '#') /* comment line */ |
| 2802 | continue; |
| 2803 | |
| 2804 | cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1); |
| 2805 | if (cmd == 0) |
| 2806 | error (_("Bad action list item: %s"), action_exp); |
| 2807 | |
| 2808 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) |
| 2809 | { |
| 2810 | int i; |
| 2811 | |
| 2812 | for (i = 0; i < action->body_count; ++i) |
| 2813 | trace_dump_actions (action->body_list[i], |
| 2814 | 1, stepping_frame, from_tty); |
| 2815 | } |
| 2816 | else if (cmd_cfunc_eq (cmd, collect_pseudocommand)) |
| 2817 | { |
| 2818 | /* Display the collected data. |
| 2819 | For the trap frame, display only what was collected at |
| 2820 | the trap. Likewise for stepping frames, display only |
| 2821 | what was collected while stepping. This means that the |
| 2822 | two boolean variables, STEPPING_FRAME and |
| 2823 | STEPPING_ACTIONS should be equal. */ |
| 2824 | if (stepping_frame == stepping_actions) |
| 2825 | { |
| 2826 | if (*action_exp == '/') |
| 2827 | action_exp = decode_agent_options (action_exp); |
| 2828 | |
| 2829 | do |
| 2830 | { /* Repeat over a comma-separated list. */ |
| 2831 | QUIT; /* Allow user to bail out with ^C. */ |
| 2832 | if (*action_exp == ',') |
| 2833 | action_exp++; |
| 2834 | while (isspace ((int) *action_exp)) |
| 2835 | action_exp++; |
| 2836 | |
| 2837 | next_comma = strchr (action_exp, ','); |
| 2838 | |
| 2839 | if (0 == strncasecmp (action_exp, "$reg", 4)) |
| 2840 | registers_info (NULL, from_tty); |
| 2841 | else if (0 == strncasecmp (action_exp, "$_ret", 5)) |
| 2842 | ; |
| 2843 | else if (0 == strncasecmp (action_exp, "$loc", 4)) |
| 2844 | locals_info (NULL, from_tty); |
| 2845 | else if (0 == strncasecmp (action_exp, "$arg", 4)) |
| 2846 | args_info (NULL, from_tty); |
| 2847 | else |
| 2848 | { /* variable */ |
| 2849 | if (next_comma) |
| 2850 | { |
| 2851 | make_cleanup (replace_comma, next_comma); |
| 2852 | *next_comma = '\0'; |
| 2853 | } |
| 2854 | printf_filtered ("%s = ", action_exp); |
| 2855 | output_command (action_exp, from_tty); |
| 2856 | printf_filtered ("\n"); |
| 2857 | } |
| 2858 | if (next_comma) |
| 2859 | *next_comma = ','; |
| 2860 | action_exp = next_comma; |
| 2861 | } |
| 2862 | while (action_exp && *action_exp == ','); |
| 2863 | } |
| 2864 | } |
| 2865 | } |
| 2866 | } |
| 2867 | |
| 2868 | /* The tdump command. */ |
| 2869 | |
| 2870 | static void |
| 2871 | trace_dump_command (char *args, int from_tty) |
| 2872 | { |
| 2873 | struct regcache *regcache; |
| 2874 | struct tracepoint *t; |
| 2875 | int stepping_frame = 0; |
| 2876 | struct bp_location *loc; |
| 2877 | char *line, *default_collect_line = NULL; |
| 2878 | struct command_line *actions, *default_collect_action = NULL; |
| 2879 | struct cleanup *old_chain = NULL; |
| 2880 | |
| 2881 | if (tracepoint_number == -1) |
| 2882 | { |
| 2883 | warning (_("No current trace frame.")); |
| 2884 | return; |
| 2885 | } |
| 2886 | |
| 2887 | t = get_tracepoint (tracepoint_number); |
| 2888 | |
| 2889 | if (t == NULL) |
| 2890 | error (_("No known tracepoint matches 'current' tracepoint #%d."), |
| 2891 | tracepoint_number); |
| 2892 | |
| 2893 | printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n", |
| 2894 | tracepoint_number, traceframe_number); |
| 2895 | |
| 2896 | /* The current frame is a trap frame if the frame PC is equal |
| 2897 | to the tracepoint PC. If not, then the current frame was |
| 2898 | collected during single-stepping. */ |
| 2899 | |
| 2900 | regcache = get_current_regcache (); |
| 2901 | |
| 2902 | /* If the traceframe's address matches any of the tracepoint's |
| 2903 | locations, assume it is a direct hit rather than a while-stepping |
| 2904 | frame. (FIXME this is not reliable, should record each frame's |
| 2905 | type.) */ |
| 2906 | stepping_frame = 1; |
| 2907 | for (loc = t->base.loc; loc; loc = loc->next) |
| 2908 | if (loc->address == regcache_read_pc (regcache)) |
| 2909 | stepping_frame = 0; |
| 2910 | |
| 2911 | actions = breakpoint_commands (&t->base); |
| 2912 | |
| 2913 | /* If there is a default-collect list, make up a collect command, |
| 2914 | prepend to the tracepoint's commands, and pass the whole mess to |
| 2915 | the trace dump scanner. We need to validate because |
| 2916 | default-collect might have been junked since the trace run. */ |
| 2917 | if (*default_collect) |
| 2918 | { |
| 2919 | default_collect_line = xstrprintf ("collect %s", default_collect); |
| 2920 | old_chain = make_cleanup (xfree, default_collect_line); |
| 2921 | line = default_collect_line; |
| 2922 | validate_actionline (&line, &t->base); |
| 2923 | default_collect_action = xmalloc (sizeof (struct command_line)); |
| 2924 | make_cleanup (xfree, default_collect_action); |
| 2925 | default_collect_action->next = actions; |
| 2926 | default_collect_action->line = line; |
| 2927 | actions = default_collect_action; |
| 2928 | } |
| 2929 | |
| 2930 | trace_dump_actions (actions, 0, stepping_frame, from_tty); |
| 2931 | |
| 2932 | if (*default_collect) |
| 2933 | do_cleanups (old_chain); |
| 2934 | } |
| 2935 | |
| 2936 | /* Encode a piece of a tracepoint's source-level definition in a form |
| 2937 | that is suitable for both protocol and saving in files. */ |
| 2938 | /* This version does not do multiple encodes for long strings; it should |
| 2939 | return an offset to the next piece to encode. FIXME */ |
| 2940 | |
| 2941 | extern int |
| 2942 | encode_source_string (int tpnum, ULONGEST addr, |
| 2943 | char *srctype, char *src, char *buf, int buf_size) |
| 2944 | { |
| 2945 | if (80 + strlen (srctype) > buf_size) |
| 2946 | error (_("Buffer too small for source encoding")); |
| 2947 | sprintf (buf, "%x:%s:%s:%x:%x:", |
| 2948 | tpnum, phex_nz (addr, sizeof (addr)), |
| 2949 | srctype, 0, (int) strlen (src)); |
| 2950 | if (strlen (buf) + strlen (src) * 2 >= buf_size) |
| 2951 | error (_("Source string too long for buffer")); |
| 2952 | bin2hex (src, buf + strlen (buf), 0); |
| 2953 | return -1; |
| 2954 | } |
| 2955 | |
| 2956 | extern int trace_regblock_size; |
| 2957 | |
| 2958 | /* Save tracepoint data to file named FILENAME. If TARGET_DOES_SAVE is |
| 2959 | non-zero, the save is performed on the target, otherwise GDB obtains all |
| 2960 | trace data and saves it locally. */ |
| 2961 | |
| 2962 | void |
| 2963 | trace_save (const char *filename, int target_does_save) |
| 2964 | { |
| 2965 | struct cleanup *cleanup; |
| 2966 | char *pathname; |
| 2967 | struct trace_status *ts = current_trace_status (); |
| 2968 | int err, status; |
| 2969 | FILE *fp; |
| 2970 | struct uploaded_tp *uploaded_tps = NULL, *utp; |
| 2971 | struct uploaded_tsv *uploaded_tsvs = NULL, *utsv; |
| 2972 | int a; |
| 2973 | char *act; |
| 2974 | LONGEST gotten = 0; |
| 2975 | ULONGEST offset = 0; |
| 2976 | #define MAX_TRACE_UPLOAD 2000 |
| 2977 | gdb_byte buf[MAX_TRACE_UPLOAD]; |
| 2978 | int written; |
| 2979 | |
| 2980 | /* If the target is to save the data to a file on its own, then just |
| 2981 | send the command and be done with it. */ |
| 2982 | if (target_does_save) |
| 2983 | { |
| 2984 | err = target_save_trace_data (filename); |
| 2985 | if (err < 0) |
| 2986 | error (_("Target failed to save trace data to '%s'."), |
| 2987 | filename); |
| 2988 | return; |
| 2989 | } |
| 2990 | |
| 2991 | /* Get the trace status first before opening the file, so if the |
| 2992 | target is losing, we can get out without touching files. */ |
| 2993 | status = target_get_trace_status (ts); |
| 2994 | |
| 2995 | pathname = tilde_expand (filename); |
| 2996 | cleanup = make_cleanup (xfree, pathname); |
| 2997 | |
| 2998 | fp = fopen (pathname, "wb"); |
| 2999 | if (!fp) |
| 3000 | error (_("Unable to open file '%s' for saving trace data (%s)"), |
| 3001 | filename, safe_strerror (errno)); |
| 3002 | make_cleanup_fclose (fp); |
| 3003 | |
| 3004 | /* Write a file header, with a high-bit-set char to indicate a |
| 3005 | binary file, plus a hint as what this file is, and a version |
| 3006 | number in case of future needs. */ |
| 3007 | written = fwrite ("\x7fTRACE0\n", 8, 1, fp); |
| 3008 | if (written < 1) |
| 3009 | perror_with_name (pathname); |
| 3010 | |
| 3011 | /* Write descriptive info. */ |
| 3012 | |
| 3013 | /* Write out the size of a register block. */ |
| 3014 | fprintf (fp, "R %x\n", trace_regblock_size); |
| 3015 | |
| 3016 | /* Write out status of the tracing run (aka "tstatus" info). */ |
| 3017 | fprintf (fp, "status %c;%s", |
| 3018 | (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]); |
| 3019 | if (ts->stop_reason == tracepoint_error) |
| 3020 | { |
| 3021 | char *buf = (char *) alloca (strlen (ts->stop_desc) * 2 + 1); |
| 3022 | |
| 3023 | bin2hex ((gdb_byte *) ts->stop_desc, buf, 0); |
| 3024 | fprintf (fp, ":%s", buf); |
| 3025 | } |
| 3026 | fprintf (fp, ":%x", ts->stopping_tracepoint); |
| 3027 | if (ts->traceframe_count >= 0) |
| 3028 | fprintf (fp, ";tframes:%x", ts->traceframe_count); |
| 3029 | if (ts->traceframes_created >= 0) |
| 3030 | fprintf (fp, ";tcreated:%x", ts->traceframes_created); |
| 3031 | if (ts->buffer_free >= 0) |
| 3032 | fprintf (fp, ";tfree:%x", ts->buffer_free); |
| 3033 | if (ts->buffer_size >= 0) |
| 3034 | fprintf (fp, ";tsize:%x", ts->buffer_size); |
| 3035 | if (ts->disconnected_tracing) |
| 3036 | fprintf (fp, ";disconn:%x", ts->disconnected_tracing); |
| 3037 | if (ts->circular_buffer) |
| 3038 | fprintf (fp, ";circular:%x", ts->circular_buffer); |
| 3039 | fprintf (fp, "\n"); |
| 3040 | |
| 3041 | /* Note that we want to upload tracepoints and save those, rather |
| 3042 | than simply writing out the local ones, because the user may have |
| 3043 | changed tracepoints in GDB in preparation for a future tracing |
| 3044 | run, or maybe just mass-deleted all types of breakpoints as part |
| 3045 | of cleaning up. So as not to contaminate the session, leave the |
| 3046 | data in its uploaded form, don't make into real tracepoints. */ |
| 3047 | |
| 3048 | /* Get trace state variables first, they may be checked when parsing |
| 3049 | uploaded commands. */ |
| 3050 | |
| 3051 | target_upload_trace_state_variables (&uploaded_tsvs); |
| 3052 | |
| 3053 | for (utsv = uploaded_tsvs; utsv; utsv = utsv->next) |
| 3054 | { |
| 3055 | char *buf = ""; |
| 3056 | |
| 3057 | if (utsv->name) |
| 3058 | { |
| 3059 | buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1); |
| 3060 | bin2hex ((gdb_byte *) (utsv->name), buf, 0); |
| 3061 | } |
| 3062 | |
| 3063 | fprintf (fp, "tsv %x:%s:%x:%s\n", |
| 3064 | utsv->number, phex_nz (utsv->initial_value, 8), |
| 3065 | utsv->builtin, buf); |
| 3066 | |
| 3067 | if (utsv->name) |
| 3068 | xfree (buf); |
| 3069 | } |
| 3070 | |
| 3071 | free_uploaded_tsvs (&uploaded_tsvs); |
| 3072 | |
| 3073 | target_upload_tracepoints (&uploaded_tps); |
| 3074 | |
| 3075 | for (utp = uploaded_tps; utp; utp = utp->next) |
| 3076 | target_get_tracepoint_status (NULL, utp); |
| 3077 | |
| 3078 | for (utp = uploaded_tps; utp; utp = utp->next) |
| 3079 | { |
| 3080 | fprintf (fp, "tp T%x:%s:%c:%x:%x", |
| 3081 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), |
| 3082 | (utp->enabled ? 'E' : 'D'), utp->step, utp->pass); |
| 3083 | if (utp->type == bp_fast_tracepoint) |
| 3084 | fprintf (fp, ":F%x", utp->orig_size); |
| 3085 | if (utp->cond) |
| 3086 | fprintf (fp, ":X%x,%s", (unsigned int) strlen (utp->cond) / 2, |
| 3087 | utp->cond); |
| 3088 | fprintf (fp, "\n"); |
| 3089 | for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a) |
| 3090 | fprintf (fp, "tp A%x:%s:%s\n", |
| 3091 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act); |
| 3092 | for (a = 0; VEC_iterate (char_ptr, utp->step_actions, a, act); ++a) |
| 3093 | fprintf (fp, "tp S%x:%s:%s\n", |
| 3094 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act); |
| 3095 | if (utp->at_string) |
| 3096 | { |
| 3097 | encode_source_string (utp->number, utp->addr, |
| 3098 | "at", utp->at_string, buf, MAX_TRACE_UPLOAD); |
| 3099 | fprintf (fp, "tp Z%s\n", buf); |
| 3100 | } |
| 3101 | if (utp->cond_string) |
| 3102 | { |
| 3103 | encode_source_string (utp->number, utp->addr, |
| 3104 | "cond", utp->cond_string, |
| 3105 | buf, MAX_TRACE_UPLOAD); |
| 3106 | fprintf (fp, "tp Z%s\n", buf); |
| 3107 | } |
| 3108 | for (a = 0; VEC_iterate (char_ptr, utp->cmd_strings, a, act); ++a) |
| 3109 | { |
| 3110 | encode_source_string (utp->number, utp->addr, "cmd", act, |
| 3111 | buf, MAX_TRACE_UPLOAD); |
| 3112 | fprintf (fp, "tp Z%s\n", buf); |
| 3113 | } |
| 3114 | fprintf (fp, "tp V%x:%s:%x:%s\n", |
| 3115 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), |
| 3116 | utp->hit_count, |
| 3117 | phex_nz (utp->traceframe_usage, |
| 3118 | sizeof (utp->traceframe_usage))); |
| 3119 | } |
| 3120 | |
| 3121 | free_uploaded_tps (&uploaded_tps); |
| 3122 | |
| 3123 | /* Mark the end of the definition section. */ |
| 3124 | fprintf (fp, "\n"); |
| 3125 | |
| 3126 | /* Get and write the trace data proper. We ask for big blocks, in |
| 3127 | the hopes of efficiency, but will take less if the target has |
| 3128 | packet size limitations or some such. */ |
| 3129 | while (1) |
| 3130 | { |
| 3131 | gotten = target_get_raw_trace_data (buf, offset, MAX_TRACE_UPLOAD); |
| 3132 | if (gotten < 0) |
| 3133 | error (_("Failure to get requested trace buffer data")); |
| 3134 | /* No more data is forthcoming, we're done. */ |
| 3135 | if (gotten == 0) |
| 3136 | break; |
| 3137 | written = fwrite (buf, gotten, 1, fp); |
| 3138 | if (written < 1) |
| 3139 | perror_with_name (pathname); |
| 3140 | offset += gotten; |
| 3141 | } |
| 3142 | |
| 3143 | /* Mark the end of trace data. (We know that gotten is 0 at this point.) */ |
| 3144 | written = fwrite (&gotten, 4, 1, fp); |
| 3145 | if (written < 1) |
| 3146 | perror_with_name (pathname); |
| 3147 | |
| 3148 | do_cleanups (cleanup); |
| 3149 | } |
| 3150 | |
| 3151 | static void |
| 3152 | trace_save_command (char *args, int from_tty) |
| 3153 | { |
| 3154 | int target_does_save = 0; |
| 3155 | char **argv; |
| 3156 | char *filename = NULL; |
| 3157 | struct cleanup *back_to; |
| 3158 | |
| 3159 | if (args == NULL) |
| 3160 | error_no_arg (_("file in which to save trace data")); |
| 3161 | |
| 3162 | argv = gdb_buildargv (args); |
| 3163 | back_to = make_cleanup_freeargv (argv); |
| 3164 | |
| 3165 | for (; *argv; ++argv) |
| 3166 | { |
| 3167 | if (strcmp (*argv, "-r") == 0) |
| 3168 | target_does_save = 1; |
| 3169 | else if (**argv == '-') |
| 3170 | error (_("unknown option `%s'"), *argv); |
| 3171 | else |
| 3172 | filename = *argv; |
| 3173 | } |
| 3174 | |
| 3175 | if (!filename) |
| 3176 | error_no_arg (_("file in which to save trace data")); |
| 3177 | |
| 3178 | trace_save (filename, target_does_save); |
| 3179 | |
| 3180 | if (from_tty) |
| 3181 | printf_filtered (_("Trace data saved to file '%s'.\n"), filename); |
| 3182 | |
| 3183 | do_cleanups (back_to); |
| 3184 | } |
| 3185 | |
| 3186 | /* Tell the target what to do with an ongoing tracing run if GDB |
| 3187 | disconnects for some reason. */ |
| 3188 | |
| 3189 | static void |
| 3190 | set_disconnected_tracing (char *args, int from_tty, |
| 3191 | struct cmd_list_element *c) |
| 3192 | { |
| 3193 | target_set_disconnected_tracing (disconnected_tracing); |
| 3194 | } |
| 3195 | |
| 3196 | static void |
| 3197 | set_circular_trace_buffer (char *args, int from_tty, |
| 3198 | struct cmd_list_element *c) |
| 3199 | { |
| 3200 | target_set_circular_trace_buffer (circular_trace_buffer); |
| 3201 | } |
| 3202 | |
| 3203 | static void |
| 3204 | set_trace_user (char *args, int from_tty, |
| 3205 | struct cmd_list_element *c) |
| 3206 | { |
| 3207 | int ret; |
| 3208 | |
| 3209 | ret = target_set_trace_notes (trace_user, NULL, NULL); |
| 3210 | |
| 3211 | if (!ret) |
| 3212 | warning (_("Target does not support trace notes, user ignored")); |
| 3213 | } |
| 3214 | |
| 3215 | static void |
| 3216 | set_trace_notes (char *args, int from_tty, |
| 3217 | struct cmd_list_element *c) |
| 3218 | { |
| 3219 | int ret; |
| 3220 | |
| 3221 | ret = target_set_trace_notes (NULL, trace_notes, NULL); |
| 3222 | |
| 3223 | if (!ret) |
| 3224 | warning (_("Target does not support trace notes, note ignored")); |
| 3225 | } |
| 3226 | |
| 3227 | static void |
| 3228 | set_trace_stop_notes (char *args, int from_tty, |
| 3229 | struct cmd_list_element *c) |
| 3230 | { |
| 3231 | int ret; |
| 3232 | |
| 3233 | ret = target_set_trace_notes (NULL, NULL, trace_stop_notes); |
| 3234 | |
| 3235 | if (!ret) |
| 3236 | warning (_("Target does not support trace notes, stop note ignored")); |
| 3237 | } |
| 3238 | |
| 3239 | /* Convert the memory pointed to by mem into hex, placing result in buf. |
| 3240 | * Return a pointer to the last char put in buf (null) |
| 3241 | * "stolen" from sparc-stub.c |
| 3242 | */ |
| 3243 | |
| 3244 | static const char hexchars[] = "0123456789abcdef"; |
| 3245 | |
| 3246 | static char * |
| 3247 | mem2hex (gdb_byte *mem, char *buf, int count) |
| 3248 | { |
| 3249 | gdb_byte ch; |
| 3250 | |
| 3251 | while (count-- > 0) |
| 3252 | { |
| 3253 | ch = *mem++; |
| 3254 | |
| 3255 | *buf++ = hexchars[ch >> 4]; |
| 3256 | *buf++ = hexchars[ch & 0xf]; |
| 3257 | } |
| 3258 | |
| 3259 | *buf = 0; |
| 3260 | |
| 3261 | return buf; |
| 3262 | } |
| 3263 | |
| 3264 | int |
| 3265 | get_traceframe_number (void) |
| 3266 | { |
| 3267 | return traceframe_number; |
| 3268 | } |
| 3269 | |
| 3270 | /* Make the traceframe NUM be the current trace frame. Does nothing |
| 3271 | if NUM is already current. */ |
| 3272 | |
| 3273 | void |
| 3274 | set_current_traceframe (int num) |
| 3275 | { |
| 3276 | int newnum; |
| 3277 | |
| 3278 | if (traceframe_number == num) |
| 3279 | { |
| 3280 | /* Nothing to do. */ |
| 3281 | return; |
| 3282 | } |
| 3283 | |
| 3284 | newnum = target_trace_find (tfind_number, num, 0, 0, NULL); |
| 3285 | |
| 3286 | if (newnum != num) |
| 3287 | warning (_("could not change traceframe")); |
| 3288 | |
| 3289 | set_traceframe_num (newnum); |
| 3290 | |
| 3291 | /* Changing the traceframe changes our view of registers and of the |
| 3292 | frame chain. */ |
| 3293 | registers_changed (); |
| 3294 | |
| 3295 | clear_traceframe_info (); |
| 3296 | } |
| 3297 | |
| 3298 | /* Make the traceframe NUM be the current trace frame, and do nothing |
| 3299 | more. */ |
| 3300 | |
| 3301 | void |
| 3302 | set_traceframe_number (int num) |
| 3303 | { |
| 3304 | traceframe_number = num; |
| 3305 | } |
| 3306 | |
| 3307 | /* A cleanup used when switching away and back from tfind mode. */ |
| 3308 | |
| 3309 | struct current_traceframe_cleanup |
| 3310 | { |
| 3311 | /* The traceframe we were inspecting. */ |
| 3312 | int traceframe_number; |
| 3313 | }; |
| 3314 | |
| 3315 | static void |
| 3316 | do_restore_current_traceframe_cleanup (void *arg) |
| 3317 | { |
| 3318 | struct current_traceframe_cleanup *old = arg; |
| 3319 | |
| 3320 | set_current_traceframe (old->traceframe_number); |
| 3321 | } |
| 3322 | |
| 3323 | static void |
| 3324 | restore_current_traceframe_cleanup_dtor (void *arg) |
| 3325 | { |
| 3326 | struct current_traceframe_cleanup *old = arg; |
| 3327 | |
| 3328 | xfree (old); |
| 3329 | } |
| 3330 | |
| 3331 | struct cleanup * |
| 3332 | make_cleanup_restore_current_traceframe (void) |
| 3333 | { |
| 3334 | struct current_traceframe_cleanup *old; |
| 3335 | |
| 3336 | old = xmalloc (sizeof (struct current_traceframe_cleanup)); |
| 3337 | old->traceframe_number = traceframe_number; |
| 3338 | |
| 3339 | return make_cleanup_dtor (do_restore_current_traceframe_cleanup, old, |
| 3340 | restore_current_traceframe_cleanup_dtor); |
| 3341 | } |
| 3342 | |
| 3343 | struct cleanup * |
| 3344 | make_cleanup_restore_traceframe_number (void) |
| 3345 | { |
| 3346 | return make_cleanup_restore_integer (&traceframe_number); |
| 3347 | } |
| 3348 | |
| 3349 | /* Given a number and address, return an uploaded tracepoint with that |
| 3350 | number, creating if necessary. */ |
| 3351 | |
| 3352 | struct uploaded_tp * |
| 3353 | get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp) |
| 3354 | { |
| 3355 | struct uploaded_tp *utp; |
| 3356 | |
| 3357 | for (utp = *utpp; utp; utp = utp->next) |
| 3358 | if (utp->number == num && utp->addr == addr) |
| 3359 | return utp; |
| 3360 | utp = (struct uploaded_tp *) xmalloc (sizeof (struct uploaded_tp)); |
| 3361 | memset (utp, 0, sizeof (struct uploaded_tp)); |
| 3362 | utp->number = num; |
| 3363 | utp->addr = addr; |
| 3364 | utp->actions = NULL; |
| 3365 | utp->step_actions = NULL; |
| 3366 | utp->cmd_strings = NULL; |
| 3367 | utp->next = *utpp; |
| 3368 | *utpp = utp; |
| 3369 | return utp; |
| 3370 | } |
| 3371 | |
| 3372 | static void |
| 3373 | free_uploaded_tps (struct uploaded_tp **utpp) |
| 3374 | { |
| 3375 | struct uploaded_tp *next_one; |
| 3376 | |
| 3377 | while (*utpp) |
| 3378 | { |
| 3379 | next_one = (*utpp)->next; |
| 3380 | xfree (*utpp); |
| 3381 | *utpp = next_one; |
| 3382 | } |
| 3383 | } |
| 3384 | |
| 3385 | /* Given a number and address, return an uploaded tracepoint with that |
| 3386 | number, creating if necessary. */ |
| 3387 | |
| 3388 | static struct uploaded_tsv * |
| 3389 | get_uploaded_tsv (int num, struct uploaded_tsv **utsvp) |
| 3390 | { |
| 3391 | struct uploaded_tsv *utsv; |
| 3392 | |
| 3393 | for (utsv = *utsvp; utsv; utsv = utsv->next) |
| 3394 | if (utsv->number == num) |
| 3395 | return utsv; |
| 3396 | utsv = (struct uploaded_tsv *) xmalloc (sizeof (struct uploaded_tsv)); |
| 3397 | memset (utsv, 0, sizeof (struct uploaded_tsv)); |
| 3398 | utsv->number = num; |
| 3399 | utsv->next = *utsvp; |
| 3400 | *utsvp = utsv; |
| 3401 | return utsv; |
| 3402 | } |
| 3403 | |
| 3404 | static void |
| 3405 | free_uploaded_tsvs (struct uploaded_tsv **utsvp) |
| 3406 | { |
| 3407 | struct uploaded_tsv *next_one; |
| 3408 | |
| 3409 | while (*utsvp) |
| 3410 | { |
| 3411 | next_one = (*utsvp)->next; |
| 3412 | xfree (*utsvp); |
| 3413 | *utsvp = next_one; |
| 3414 | } |
| 3415 | } |
| 3416 | |
| 3417 | /* FIXME this function is heuristic and will miss the cases where the |
| 3418 | conditional is semantically identical but differs in whitespace, |
| 3419 | such as "x == 0" vs "x==0". */ |
| 3420 | |
| 3421 | static int |
| 3422 | cond_string_is_same (char *str1, char *str2) |
| 3423 | { |
| 3424 | if (str1 == NULL || str2 == NULL) |
| 3425 | return (str1 == str2); |
| 3426 | |
| 3427 | return (strcmp (str1, str2) == 0); |
| 3428 | } |
| 3429 | |
| 3430 | /* Look for an existing tracepoint that seems similar enough to the |
| 3431 | uploaded one. Enablement isn't compared, because the user can |
| 3432 | toggle that freely, and may have done so in anticipation of the |
| 3433 | next trace run. Return the location of matched tracepoint. */ |
| 3434 | |
| 3435 | static struct bp_location * |
| 3436 | find_matching_tracepoint_location (struct uploaded_tp *utp) |
| 3437 | { |
| 3438 | VEC(breakpoint_p) *tp_vec = all_tracepoints (); |
| 3439 | int ix; |
| 3440 | struct breakpoint *b; |
| 3441 | struct bp_location *loc; |
| 3442 | |
| 3443 | for (ix = 0; VEC_iterate (breakpoint_p, tp_vec, ix, b); ix++) |
| 3444 | { |
| 3445 | struct tracepoint *t = (struct tracepoint *) b; |
| 3446 | |
| 3447 | if (b->type == utp->type |
| 3448 | && t->step_count == utp->step |
| 3449 | && t->pass_count == utp->pass |
| 3450 | && cond_string_is_same (t->base.cond_string, utp->cond_string) |
| 3451 | /* FIXME also test actions. */ |
| 3452 | ) |
| 3453 | { |
| 3454 | /* Scan the locations for an address match. */ |
| 3455 | for (loc = b->loc; loc; loc = loc->next) |
| 3456 | { |
| 3457 | if (loc->address == utp->addr) |
| 3458 | return loc; |
| 3459 | } |
| 3460 | } |
| 3461 | } |
| 3462 | return NULL; |
| 3463 | } |
| 3464 | |
| 3465 | /* Given a list of tracepoints uploaded from a target, attempt to |
| 3466 | match them up with existing tracepoints, and create new ones if not |
| 3467 | found. */ |
| 3468 | |
| 3469 | void |
| 3470 | merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps) |
| 3471 | { |
| 3472 | struct uploaded_tp *utp; |
| 3473 | /* A set of tracepoints which are modified. */ |
| 3474 | VEC(breakpoint_p) *modified_tp = NULL; |
| 3475 | int ix; |
| 3476 | struct breakpoint *b; |
| 3477 | |
| 3478 | /* Look for GDB tracepoints that match up with our uploaded versions. */ |
| 3479 | for (utp = *uploaded_tps; utp; utp = utp->next) |
| 3480 | { |
| 3481 | struct bp_location *loc; |
| 3482 | struct tracepoint *t; |
| 3483 | |
| 3484 | loc = find_matching_tracepoint_location (utp); |
| 3485 | if (loc) |
| 3486 | { |
| 3487 | int found = 0; |
| 3488 | |
| 3489 | /* Mark this location as already inserted. */ |
| 3490 | loc->inserted = 1; |
| 3491 | t = (struct tracepoint *) loc->owner; |
| 3492 | printf_filtered (_("Assuming tracepoint %d is same " |
| 3493 | "as target's tracepoint %d at %s.\n"), |
| 3494 | loc->owner->number, utp->number, |
| 3495 | paddress (loc->gdbarch, utp->addr)); |
| 3496 | |
| 3497 | /* The tracepoint LOC->owner was modified (the location LOC |
| 3498 | was marked as inserted in the target). Save it in |
| 3499 | MODIFIED_TP if not there yet. The 'breakpoint-modified' |
| 3500 | observers will be notified later once for each tracepoint |
| 3501 | saved in MODIFIED_TP. */ |
| 3502 | for (ix = 0; |
| 3503 | VEC_iterate (breakpoint_p, modified_tp, ix, b); |
| 3504 | ix++) |
| 3505 | if (b == loc->owner) |
| 3506 | { |
| 3507 | found = 1; |
| 3508 | break; |
| 3509 | } |
| 3510 | if (!found) |
| 3511 | VEC_safe_push (breakpoint_p, modified_tp, loc->owner); |
| 3512 | } |
| 3513 | else |
| 3514 | { |
| 3515 | t = create_tracepoint_from_upload (utp); |
| 3516 | if (t) |
| 3517 | printf_filtered (_("Created tracepoint %d for " |
| 3518 | "target's tracepoint %d at %s.\n"), |
| 3519 | t->base.number, utp->number, |
| 3520 | paddress (get_current_arch (), utp->addr)); |
| 3521 | else |
| 3522 | printf_filtered (_("Failed to create tracepoint for target's " |
| 3523 | "tracepoint %d at %s, skipping it.\n"), |
| 3524 | utp->number, |
| 3525 | paddress (get_current_arch (), utp->addr)); |
| 3526 | } |
| 3527 | /* Whether found or created, record the number used by the |
| 3528 | target, to help with mapping target tracepoints back to their |
| 3529 | counterparts here. */ |
| 3530 | if (t) |
| 3531 | t->number_on_target = utp->number; |
| 3532 | } |
| 3533 | |
| 3534 | /* Notify 'breakpoint-modified' observer that at least one of B's |
| 3535 | locations was changed. */ |
| 3536 | for (ix = 0; VEC_iterate (breakpoint_p, modified_tp, ix, b); ix++) |
| 3537 | observer_notify_breakpoint_modified (b); |
| 3538 | |
| 3539 | VEC_free (breakpoint_p, modified_tp); |
| 3540 | free_uploaded_tps (uploaded_tps); |
| 3541 | } |
| 3542 | |
| 3543 | /* Trace state variables don't have much to identify them beyond their |
| 3544 | name, so just use that to detect matches. */ |
| 3545 | |
| 3546 | static struct trace_state_variable * |
| 3547 | find_matching_tsv (struct uploaded_tsv *utsv) |
| 3548 | { |
| 3549 | if (!utsv->name) |
| 3550 | return NULL; |
| 3551 | |
| 3552 | return find_trace_state_variable (utsv->name); |
| 3553 | } |
| 3554 | |
| 3555 | static struct trace_state_variable * |
| 3556 | create_tsv_from_upload (struct uploaded_tsv *utsv) |
| 3557 | { |
| 3558 | const char *namebase; |
| 3559 | char *buf; |
| 3560 | int try_num = 0; |
| 3561 | struct trace_state_variable *tsv; |
| 3562 | struct cleanup *old_chain; |
| 3563 | |
| 3564 | if (utsv->name) |
| 3565 | { |
| 3566 | namebase = utsv->name; |
| 3567 | buf = xstrprintf ("%s", namebase); |
| 3568 | } |
| 3569 | else |
| 3570 | { |
| 3571 | namebase = "__tsv"; |
| 3572 | buf = xstrprintf ("%s_%d", namebase, try_num++); |
| 3573 | } |
| 3574 | |
| 3575 | /* Fish for a name that is not in use. */ |
| 3576 | /* (should check against all internal vars?) */ |
| 3577 | while (find_trace_state_variable (buf)) |
| 3578 | { |
| 3579 | xfree (buf); |
| 3580 | buf = xstrprintf ("%s_%d", namebase, try_num++); |
| 3581 | } |
| 3582 | |
| 3583 | old_chain = make_cleanup (xfree, buf); |
| 3584 | |
| 3585 | /* We have an available name, create the variable. */ |
| 3586 | tsv = create_trace_state_variable (buf); |
| 3587 | tsv->initial_value = utsv->initial_value; |
| 3588 | tsv->builtin = utsv->builtin; |
| 3589 | |
| 3590 | observer_notify_tsv_created (tsv->name, tsv->initial_value); |
| 3591 | |
| 3592 | do_cleanups (old_chain); |
| 3593 | |
| 3594 | return tsv; |
| 3595 | } |
| 3596 | |
| 3597 | /* Given a list of uploaded trace state variables, try to match them |
| 3598 | up with existing variables, or create additional ones. */ |
| 3599 | |
| 3600 | void |
| 3601 | merge_uploaded_trace_state_variables (struct uploaded_tsv **uploaded_tsvs) |
| 3602 | { |
| 3603 | int ix; |
| 3604 | struct uploaded_tsv *utsv; |
| 3605 | struct trace_state_variable *tsv; |
| 3606 | int highest; |
| 3607 | |
| 3608 | /* Most likely some numbers will have to be reassigned as part of |
| 3609 | the merge, so clear them all in anticipation. */ |
| 3610 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 3611 | tsv->number = 0; |
| 3612 | |
| 3613 | for (utsv = *uploaded_tsvs; utsv; utsv = utsv->next) |
| 3614 | { |
| 3615 | tsv = find_matching_tsv (utsv); |
| 3616 | if (tsv) |
| 3617 | { |
| 3618 | if (info_verbose) |
| 3619 | printf_filtered (_("Assuming trace state variable $%s " |
| 3620 | "is same as target's variable %d.\n"), |
| 3621 | tsv->name, utsv->number); |
| 3622 | } |
| 3623 | else |
| 3624 | { |
| 3625 | tsv = create_tsv_from_upload (utsv); |
| 3626 | if (info_verbose) |
| 3627 | printf_filtered (_("Created trace state variable " |
| 3628 | "$%s for target's variable %d.\n"), |
| 3629 | tsv->name, utsv->number); |
| 3630 | } |
| 3631 | /* Give precedence to numberings that come from the target. */ |
| 3632 | if (tsv) |
| 3633 | tsv->number = utsv->number; |
| 3634 | } |
| 3635 | |
| 3636 | /* Renumber everything that didn't get a target-assigned number. */ |
| 3637 | highest = 0; |
| 3638 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 3639 | if (tsv->number > highest) |
| 3640 | highest = tsv->number; |
| 3641 | |
| 3642 | ++highest; |
| 3643 | for (ix = 0; VEC_iterate (tsv_s, tvariables, ix, tsv); ++ix) |
| 3644 | if (tsv->number == 0) |
| 3645 | tsv->number = highest++; |
| 3646 | |
| 3647 | free_uploaded_tsvs (uploaded_tsvs); |
| 3648 | } |
| 3649 | |
| 3650 | /* target tfile command */ |
| 3651 | |
| 3652 | static struct target_ops tfile_ops; |
| 3653 | |
| 3654 | /* Fill in tfile_ops with its defined operations and properties. */ |
| 3655 | |
| 3656 | #define TRACE_HEADER_SIZE 8 |
| 3657 | |
| 3658 | static char *trace_filename; |
| 3659 | static int trace_fd = -1; |
| 3660 | static off_t trace_frames_offset; |
| 3661 | static off_t cur_offset; |
| 3662 | static int cur_data_size; |
| 3663 | int trace_regblock_size; |
| 3664 | |
| 3665 | static void tfile_interp_line (char *line, |
| 3666 | struct uploaded_tp **utpp, |
| 3667 | struct uploaded_tsv **utsvp); |
| 3668 | |
| 3669 | /* Read SIZE bytes into READBUF from the trace frame, starting at |
| 3670 | TRACE_FD's current position. Note that this call `read' |
| 3671 | underneath, hence it advances the file's seek position. Throws an |
| 3672 | error if the `read' syscall fails, or less than SIZE bytes are |
| 3673 | read. */ |
| 3674 | |
| 3675 | static void |
| 3676 | tfile_read (gdb_byte *readbuf, int size) |
| 3677 | { |
| 3678 | int gotten; |
| 3679 | |
| 3680 | gotten = read (trace_fd, readbuf, size); |
| 3681 | if (gotten < 0) |
| 3682 | perror_with_name (trace_filename); |
| 3683 | else if (gotten < size) |
| 3684 | error (_("Premature end of file while reading trace file")); |
| 3685 | } |
| 3686 | |
| 3687 | static void |
| 3688 | tfile_open (char *filename, int from_tty) |
| 3689 | { |
| 3690 | volatile struct gdb_exception ex; |
| 3691 | char *temp; |
| 3692 | struct cleanup *old_chain; |
| 3693 | int flags; |
| 3694 | int scratch_chan; |
| 3695 | char header[TRACE_HEADER_SIZE]; |
| 3696 | char linebuf[1000]; /* Should be max remote packet size or so. */ |
| 3697 | char byte; |
| 3698 | int bytes, i; |
| 3699 | struct trace_status *ts; |
| 3700 | struct uploaded_tp *uploaded_tps = NULL; |
| 3701 | struct uploaded_tsv *uploaded_tsvs = NULL; |
| 3702 | |
| 3703 | target_preopen (from_tty); |
| 3704 | if (!filename) |
| 3705 | error (_("No trace file specified.")); |
| 3706 | |
| 3707 | filename = tilde_expand (filename); |
| 3708 | if (!IS_ABSOLUTE_PATH(filename)) |
| 3709 | { |
| 3710 | temp = concat (current_directory, "/", filename, (char *) NULL); |
| 3711 | xfree (filename); |
| 3712 | filename = temp; |
| 3713 | } |
| 3714 | |
| 3715 | old_chain = make_cleanup (xfree, filename); |
| 3716 | |
| 3717 | flags = O_BINARY | O_LARGEFILE; |
| 3718 | flags |= O_RDONLY; |
| 3719 | scratch_chan = open (filename, flags, 0); |
| 3720 | if (scratch_chan < 0) |
| 3721 | perror_with_name (filename); |
| 3722 | |
| 3723 | /* Looks semi-reasonable. Toss the old trace file and work on the new. */ |
| 3724 | |
| 3725 | discard_cleanups (old_chain); /* Don't free filename any more. */ |
| 3726 | unpush_target (&tfile_ops); |
| 3727 | |
| 3728 | trace_filename = xstrdup (filename); |
| 3729 | trace_fd = scratch_chan; |
| 3730 | |
| 3731 | bytes = 0; |
| 3732 | /* Read the file header and test for validity. */ |
| 3733 | tfile_read ((gdb_byte *) &header, TRACE_HEADER_SIZE); |
| 3734 | |
| 3735 | bytes += TRACE_HEADER_SIZE; |
| 3736 | if (!(header[0] == 0x7f |
| 3737 | && (strncmp (header + 1, "TRACE0\n", 7) == 0))) |
| 3738 | error (_("File is not a valid trace file.")); |
| 3739 | |
| 3740 | push_target (&tfile_ops); |
| 3741 | |
| 3742 | trace_regblock_size = 0; |
| 3743 | ts = current_trace_status (); |
| 3744 | /* We know we're working with a file. */ |
| 3745 | ts->from_file = 1; |
| 3746 | /* Set defaults in case there is no status line. */ |
| 3747 | ts->running_known = 0; |
| 3748 | ts->stop_reason = trace_stop_reason_unknown; |
| 3749 | ts->traceframe_count = -1; |
| 3750 | ts->buffer_free = 0; |
| 3751 | ts->disconnected_tracing = 0; |
| 3752 | ts->circular_buffer = 0; |
| 3753 | |
| 3754 | TRY_CATCH (ex, RETURN_MASK_ALL) |
| 3755 | { |
| 3756 | /* Read through a section of newline-terminated lines that |
| 3757 | define things like tracepoints. */ |
| 3758 | i = 0; |
| 3759 | while (1) |
| 3760 | { |
| 3761 | tfile_read (&byte, 1); |
| 3762 | |
| 3763 | ++bytes; |
| 3764 | if (byte == '\n') |
| 3765 | { |
| 3766 | /* Empty line marks end of the definition section. */ |
| 3767 | if (i == 0) |
| 3768 | break; |
| 3769 | linebuf[i] = '\0'; |
| 3770 | i = 0; |
| 3771 | tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs); |
| 3772 | } |
| 3773 | else |
| 3774 | linebuf[i++] = byte; |
| 3775 | if (i >= 1000) |
| 3776 | error (_("Excessively long lines in trace file")); |
| 3777 | } |
| 3778 | |
| 3779 | /* Record the starting offset of the binary trace data. */ |
| 3780 | trace_frames_offset = bytes; |
| 3781 | |
| 3782 | /* If we don't have a blocksize, we can't interpret the |
| 3783 | traceframes. */ |
| 3784 | if (trace_regblock_size == 0) |
| 3785 | error (_("No register block size recorded in trace file")); |
| 3786 | } |
| 3787 | if (ex.reason < 0) |
| 3788 | { |
| 3789 | /* Pop the partially set up target. */ |
| 3790 | pop_target (); |
| 3791 | throw_exception (ex); |
| 3792 | } |
| 3793 | |
| 3794 | inferior_appeared (current_inferior (), TFILE_PID); |
| 3795 | inferior_ptid = pid_to_ptid (TFILE_PID); |
| 3796 | add_thread_silent (inferior_ptid); |
| 3797 | |
| 3798 | if (ts->traceframe_count <= 0) |
| 3799 | warning (_("No traceframes present in this file.")); |
| 3800 | |
| 3801 | /* Add the file's tracepoints and variables into the current mix. */ |
| 3802 | |
| 3803 | /* Get trace state variables first, they may be checked when parsing |
| 3804 | uploaded commands. */ |
| 3805 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
| 3806 | |
| 3807 | merge_uploaded_tracepoints (&uploaded_tps); |
| 3808 | |
| 3809 | post_create_inferior (&tfile_ops, from_tty); |
| 3810 | } |
| 3811 | |
| 3812 | /* Interpret the given line from the definitions part of the trace |
| 3813 | file. */ |
| 3814 | |
| 3815 | static void |
| 3816 | tfile_interp_line (char *line, |
| 3817 | struct uploaded_tp **utpp, struct uploaded_tsv **utsvp) |
| 3818 | { |
| 3819 | char *p = line; |
| 3820 | |
| 3821 | if (strncmp (p, "R ", strlen ("R ")) == 0) |
| 3822 | { |
| 3823 | p += strlen ("R "); |
| 3824 | trace_regblock_size = strtol (p, &p, 16); |
| 3825 | } |
| 3826 | else if (strncmp (p, "status ", strlen ("status ")) == 0) |
| 3827 | { |
| 3828 | p += strlen ("status "); |
| 3829 | parse_trace_status (p, current_trace_status ()); |
| 3830 | } |
| 3831 | else if (strncmp (p, "tp ", strlen ("tp ")) == 0) |
| 3832 | { |
| 3833 | p += strlen ("tp "); |
| 3834 | parse_tracepoint_definition (p, utpp); |
| 3835 | } |
| 3836 | else if (strncmp (p, "tsv ", strlen ("tsv ")) == 0) |
| 3837 | { |
| 3838 | p += strlen ("tsv "); |
| 3839 | parse_tsv_definition (p, utsvp); |
| 3840 | } |
| 3841 | else |
| 3842 | warning (_("Ignoring trace file definition \"%s\""), line); |
| 3843 | } |
| 3844 | |
| 3845 | /* Parse the part of trace status syntax that is shared between |
| 3846 | the remote protocol and the trace file reader. */ |
| 3847 | |
| 3848 | void |
| 3849 | parse_trace_status (char *line, struct trace_status *ts) |
| 3850 | { |
| 3851 | char *p = line, *p1, *p2, *p3, *p_temp; |
| 3852 | int end; |
| 3853 | ULONGEST val; |
| 3854 | |
| 3855 | ts->running_known = 1; |
| 3856 | ts->running = (*p++ == '1'); |
| 3857 | ts->stop_reason = trace_stop_reason_unknown; |
| 3858 | xfree (ts->stop_desc); |
| 3859 | ts->stop_desc = NULL; |
| 3860 | ts->traceframe_count = -1; |
| 3861 | ts->traceframes_created = -1; |
| 3862 | ts->buffer_free = -1; |
| 3863 | ts->buffer_size = -1; |
| 3864 | ts->disconnected_tracing = 0; |
| 3865 | ts->circular_buffer = 0; |
| 3866 | xfree (ts->user_name); |
| 3867 | ts->user_name = NULL; |
| 3868 | xfree (ts->notes); |
| 3869 | ts->notes = NULL; |
| 3870 | ts->start_time = ts->stop_time = 0; |
| 3871 | |
| 3872 | while (*p++) |
| 3873 | { |
| 3874 | p1 = strchr (p, ':'); |
| 3875 | if (p1 == NULL) |
| 3876 | error (_("Malformed trace status, at %s\n\ |
| 3877 | Status line: '%s'\n"), p, line); |
| 3878 | p3 = strchr (p, ';'); |
| 3879 | if (p3 == NULL) |
| 3880 | p3 = p + strlen (p); |
| 3881 | if (strncmp (p, stop_reason_names[trace_buffer_full], p1 - p) == 0) |
| 3882 | { |
| 3883 | p = unpack_varlen_hex (++p1, &val); |
| 3884 | ts->stop_reason = trace_buffer_full; |
| 3885 | } |
| 3886 | else if (strncmp (p, stop_reason_names[trace_never_run], p1 - p) == 0) |
| 3887 | { |
| 3888 | p = unpack_varlen_hex (++p1, &val); |
| 3889 | ts->stop_reason = trace_never_run; |
| 3890 | } |
| 3891 | else if (strncmp (p, stop_reason_names[tracepoint_passcount], |
| 3892 | p1 - p) == 0) |
| 3893 | { |
| 3894 | p = unpack_varlen_hex (++p1, &val); |
| 3895 | ts->stop_reason = tracepoint_passcount; |
| 3896 | ts->stopping_tracepoint = val; |
| 3897 | } |
| 3898 | else if (strncmp (p, stop_reason_names[tstop_command], p1 - p) == 0) |
| 3899 | { |
| 3900 | p2 = strchr (++p1, ':'); |
| 3901 | if (!p2 || p2 > p3) |
| 3902 | { |
| 3903 | /*older style*/ |
| 3904 | p2 = p1; |
| 3905 | } |
| 3906 | else if (p2 != p1) |
| 3907 | { |
| 3908 | ts->stop_desc = xmalloc (strlen (line)); |
| 3909 | end = hex2bin (p1, ts->stop_desc, (p2 - p1) / 2); |
| 3910 | ts->stop_desc[end] = '\0'; |
| 3911 | } |
| 3912 | else |
| 3913 | ts->stop_desc = xstrdup (""); |
| 3914 | |
| 3915 | p = unpack_varlen_hex (++p2, &val); |
| 3916 | ts->stop_reason = tstop_command; |
| 3917 | } |
| 3918 | else if (strncmp (p, stop_reason_names[trace_disconnected], p1 - p) == 0) |
| 3919 | { |
| 3920 | p = unpack_varlen_hex (++p1, &val); |
| 3921 | ts->stop_reason = trace_disconnected; |
| 3922 | } |
| 3923 | else if (strncmp (p, stop_reason_names[tracepoint_error], p1 - p) == 0) |
| 3924 | { |
| 3925 | p2 = strchr (++p1, ':'); |
| 3926 | if (p2 != p1) |
| 3927 | { |
| 3928 | ts->stop_desc = xmalloc ((p2 - p1) / 2 + 1); |
| 3929 | end = hex2bin (p1, ts->stop_desc, (p2 - p1) / 2); |
| 3930 | ts->stop_desc[end] = '\0'; |
| 3931 | } |
| 3932 | else |
| 3933 | ts->stop_desc = xstrdup (""); |
| 3934 | |
| 3935 | p = unpack_varlen_hex (++p2, &val); |
| 3936 | ts->stopping_tracepoint = val; |
| 3937 | ts->stop_reason = tracepoint_error; |
| 3938 | } |
| 3939 | else if (strncmp (p, "tframes", p1 - p) == 0) |
| 3940 | { |
| 3941 | p = unpack_varlen_hex (++p1, &val); |
| 3942 | ts->traceframe_count = val; |
| 3943 | } |
| 3944 | else if (strncmp (p, "tcreated", p1 - p) == 0) |
| 3945 | { |
| 3946 | p = unpack_varlen_hex (++p1, &val); |
| 3947 | ts->traceframes_created = val; |
| 3948 | } |
| 3949 | else if (strncmp (p, "tfree", p1 - p) == 0) |
| 3950 | { |
| 3951 | p = unpack_varlen_hex (++p1, &val); |
| 3952 | ts->buffer_free = val; |
| 3953 | } |
| 3954 | else if (strncmp (p, "tsize", p1 - p) == 0) |
| 3955 | { |
| 3956 | p = unpack_varlen_hex (++p1, &val); |
| 3957 | ts->buffer_size = val; |
| 3958 | } |
| 3959 | else if (strncmp (p, "disconn", p1 - p) == 0) |
| 3960 | { |
| 3961 | p = unpack_varlen_hex (++p1, &val); |
| 3962 | ts->disconnected_tracing = val; |
| 3963 | } |
| 3964 | else if (strncmp (p, "circular", p1 - p) == 0) |
| 3965 | { |
| 3966 | p = unpack_varlen_hex (++p1, &val); |
| 3967 | ts->circular_buffer = val; |
| 3968 | } |
| 3969 | else if (strncmp (p, "starttime", p1 - p) == 0) |
| 3970 | { |
| 3971 | p = unpack_varlen_hex (++p1, &val); |
| 3972 | ts->start_time = val; |
| 3973 | } |
| 3974 | else if (strncmp (p, "stoptime", p1 - p) == 0) |
| 3975 | { |
| 3976 | p = unpack_varlen_hex (++p1, &val); |
| 3977 | ts->stop_time = val; |
| 3978 | } |
| 3979 | else if (strncmp (p, "username", p1 - p) == 0) |
| 3980 | { |
| 3981 | ++p1; |
| 3982 | ts->user_name = xmalloc (strlen (p) / 2); |
| 3983 | end = hex2bin (p1, ts->user_name, (p3 - p1) / 2); |
| 3984 | ts->user_name[end] = '\0'; |
| 3985 | p = p3; |
| 3986 | } |
| 3987 | else if (strncmp (p, "notes", p1 - p) == 0) |
| 3988 | { |
| 3989 | ++p1; |
| 3990 | ts->notes = xmalloc (strlen (p) / 2); |
| 3991 | end = hex2bin (p1, ts->notes, (p3 - p1) / 2); |
| 3992 | ts->notes[end] = '\0'; |
| 3993 | p = p3; |
| 3994 | } |
| 3995 | else |
| 3996 | { |
| 3997 | /* Silently skip unknown optional info. */ |
| 3998 | p_temp = strchr (p1 + 1, ';'); |
| 3999 | if (p_temp) |
| 4000 | p = p_temp; |
| 4001 | else |
| 4002 | /* Must be at the end. */ |
| 4003 | break; |
| 4004 | } |
| 4005 | } |
| 4006 | } |
| 4007 | |
| 4008 | void |
| 4009 | parse_tracepoint_status (char *p, struct breakpoint *bp, |
| 4010 | struct uploaded_tp *utp) |
| 4011 | { |
| 4012 | ULONGEST uval; |
| 4013 | struct tracepoint *tp = (struct tracepoint *) bp; |
| 4014 | |
| 4015 | p = unpack_varlen_hex (p, &uval); |
| 4016 | if (tp) |
| 4017 | tp->base.hit_count += uval; |
| 4018 | else |
| 4019 | utp->hit_count += uval; |
| 4020 | p = unpack_varlen_hex (p + 1, &uval); |
| 4021 | if (tp) |
| 4022 | tp->traceframe_usage += uval; |
| 4023 | else |
| 4024 | utp->traceframe_usage += uval; |
| 4025 | /* Ignore any extra, allowing for future extensions. */ |
| 4026 | } |
| 4027 | |
| 4028 | /* Given a line of text defining a part of a tracepoint, parse it into |
| 4029 | an "uploaded tracepoint". */ |
| 4030 | |
| 4031 | void |
| 4032 | parse_tracepoint_definition (char *line, struct uploaded_tp **utpp) |
| 4033 | { |
| 4034 | char *p; |
| 4035 | char piece; |
| 4036 | ULONGEST num, addr, step, pass, orig_size, xlen, start; |
| 4037 | int enabled, end; |
| 4038 | enum bptype type; |
| 4039 | char *cond, *srctype, *buf; |
| 4040 | struct uploaded_tp *utp = NULL; |
| 4041 | |
| 4042 | p = line; |
| 4043 | /* Both tracepoint and action definitions start with the same number |
| 4044 | and address sequence. */ |
| 4045 | piece = *p++; |
| 4046 | p = unpack_varlen_hex (p, &num); |
| 4047 | p++; /* skip a colon */ |
| 4048 | p = unpack_varlen_hex (p, &addr); |
| 4049 | p++; /* skip a colon */ |
| 4050 | if (piece == 'T') |
| 4051 | { |
| 4052 | enabled = (*p++ == 'E'); |
| 4053 | p++; /* skip a colon */ |
| 4054 | p = unpack_varlen_hex (p, &step); |
| 4055 | p++; /* skip a colon */ |
| 4056 | p = unpack_varlen_hex (p, &pass); |
| 4057 | type = bp_tracepoint; |
| 4058 | cond = NULL; |
| 4059 | /* Thumb through optional fields. */ |
| 4060 | while (*p == ':') |
| 4061 | { |
| 4062 | p++; /* skip a colon */ |
| 4063 | if (*p == 'F') |
| 4064 | { |
| 4065 | type = bp_fast_tracepoint; |
| 4066 | p++; |
| 4067 | p = unpack_varlen_hex (p, &orig_size); |
| 4068 | } |
| 4069 | else if (*p == 'S') |
| 4070 | { |
| 4071 | type = bp_static_tracepoint; |
| 4072 | p++; |
| 4073 | } |
| 4074 | else if (*p == 'X') |
| 4075 | { |
| 4076 | p++; |
| 4077 | p = unpack_varlen_hex (p, &xlen); |
| 4078 | p++; /* skip a comma */ |
| 4079 | cond = (char *) xmalloc (2 * xlen + 1); |
| 4080 | strncpy (cond, p, 2 * xlen); |
| 4081 | cond[2 * xlen] = '\0'; |
| 4082 | p += 2 * xlen; |
| 4083 | } |
| 4084 | else |
| 4085 | warning (_("Unrecognized char '%c' in tracepoint " |
| 4086 | "definition, skipping rest"), *p); |
| 4087 | } |
| 4088 | utp = get_uploaded_tp (num, addr, utpp); |
| 4089 | utp->type = type; |
| 4090 | utp->enabled = enabled; |
| 4091 | utp->step = step; |
| 4092 | utp->pass = pass; |
| 4093 | utp->cond = cond; |
| 4094 | } |
| 4095 | else if (piece == 'A') |
| 4096 | { |
| 4097 | utp = get_uploaded_tp (num, addr, utpp); |
| 4098 | VEC_safe_push (char_ptr, utp->actions, xstrdup (p)); |
| 4099 | } |
| 4100 | else if (piece == 'S') |
| 4101 | { |
| 4102 | utp = get_uploaded_tp (num, addr, utpp); |
| 4103 | VEC_safe_push (char_ptr, utp->step_actions, xstrdup (p)); |
| 4104 | } |
| 4105 | else if (piece == 'Z') |
| 4106 | { |
| 4107 | /* Parse a chunk of source form definition. */ |
| 4108 | utp = get_uploaded_tp (num, addr, utpp); |
| 4109 | srctype = p; |
| 4110 | p = strchr (p, ':'); |
| 4111 | p++; /* skip a colon */ |
| 4112 | p = unpack_varlen_hex (p, &start); |
| 4113 | p++; /* skip a colon */ |
| 4114 | p = unpack_varlen_hex (p, &xlen); |
| 4115 | p++; /* skip a colon */ |
| 4116 | |
| 4117 | buf = alloca (strlen (line)); |
| 4118 | |
| 4119 | end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2); |
| 4120 | buf[end] = '\0'; |
| 4121 | |
| 4122 | if (strncmp (srctype, "at:", strlen ("at:")) == 0) |
| 4123 | utp->at_string = xstrdup (buf); |
| 4124 | else if (strncmp (srctype, "cond:", strlen ("cond:")) == 0) |
| 4125 | utp->cond_string = xstrdup (buf); |
| 4126 | else if (strncmp (srctype, "cmd:", strlen ("cmd:")) == 0) |
| 4127 | VEC_safe_push (char_ptr, utp->cmd_strings, xstrdup (buf)); |
| 4128 | } |
| 4129 | else if (piece == 'V') |
| 4130 | { |
| 4131 | utp = get_uploaded_tp (num, addr, utpp); |
| 4132 | |
| 4133 | parse_tracepoint_status (p, NULL, utp); |
| 4134 | } |
| 4135 | else |
| 4136 | { |
| 4137 | /* Don't error out, the target might be sending us optional |
| 4138 | info that we don't care about. */ |
| 4139 | warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece); |
| 4140 | } |
| 4141 | } |
| 4142 | |
| 4143 | /* Convert a textual description of a trace state variable into an |
| 4144 | uploaded object. */ |
| 4145 | |
| 4146 | void |
| 4147 | parse_tsv_definition (char *line, struct uploaded_tsv **utsvp) |
| 4148 | { |
| 4149 | char *p, *buf; |
| 4150 | ULONGEST num, initval, builtin; |
| 4151 | int end; |
| 4152 | struct uploaded_tsv *utsv = NULL; |
| 4153 | |
| 4154 | buf = alloca (strlen (line)); |
| 4155 | |
| 4156 | p = line; |
| 4157 | p = unpack_varlen_hex (p, &num); |
| 4158 | p++; /* skip a colon */ |
| 4159 | p = unpack_varlen_hex (p, &initval); |
| 4160 | p++; /* skip a colon */ |
| 4161 | p = unpack_varlen_hex (p, &builtin); |
| 4162 | p++; /* skip a colon */ |
| 4163 | end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2); |
| 4164 | buf[end] = '\0'; |
| 4165 | |
| 4166 | utsv = get_uploaded_tsv (num, utsvp); |
| 4167 | utsv->initial_value = initval; |
| 4168 | utsv->builtin = builtin; |
| 4169 | utsv->name = xstrdup (buf); |
| 4170 | } |
| 4171 | |
| 4172 | /* Close the trace file and generally clean up. */ |
| 4173 | |
| 4174 | static void |
| 4175 | tfile_close (int quitting) |
| 4176 | { |
| 4177 | int pid; |
| 4178 | |
| 4179 | if (trace_fd < 0) |
| 4180 | return; |
| 4181 | |
| 4182 | pid = ptid_get_pid (inferior_ptid); |
| 4183 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ |
| 4184 | exit_inferior_silent (pid); |
| 4185 | |
| 4186 | close (trace_fd); |
| 4187 | trace_fd = -1; |
| 4188 | xfree (trace_filename); |
| 4189 | trace_filename = NULL; |
| 4190 | } |
| 4191 | |
| 4192 | static void |
| 4193 | tfile_files_info (struct target_ops *t) |
| 4194 | { |
| 4195 | /* (it would be useful to mention the name of the file). */ |
| 4196 | printf_filtered ("Looking at a trace file.\n"); |
| 4197 | } |
| 4198 | |
| 4199 | /* The trace status for a file is that tracing can never be run. */ |
| 4200 | |
| 4201 | static int |
| 4202 | tfile_get_trace_status (struct trace_status *ts) |
| 4203 | { |
| 4204 | /* Other bits of trace status were collected as part of opening the |
| 4205 | trace files, so nothing to do here. */ |
| 4206 | |
| 4207 | return -1; |
| 4208 | } |
| 4209 | |
| 4210 | static void |
| 4211 | tfile_get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) |
| 4212 | { |
| 4213 | /* Other bits of trace status were collected as part of opening the |
| 4214 | trace files, so nothing to do here. */ |
| 4215 | } |
| 4216 | |
| 4217 | /* Given the position of a traceframe in the file, figure out what |
| 4218 | address the frame was collected at. This would normally be the |
| 4219 | value of a collected PC register, but if not available, we |
| 4220 | improvise. */ |
| 4221 | |
| 4222 | static ULONGEST |
| 4223 | tfile_get_traceframe_address (off_t tframe_offset) |
| 4224 | { |
| 4225 | ULONGEST addr = 0; |
| 4226 | short tpnum; |
| 4227 | struct tracepoint *tp; |
| 4228 | off_t saved_offset = cur_offset; |
| 4229 | |
| 4230 | /* FIXME dig pc out of collected registers. */ |
| 4231 | |
| 4232 | /* Fall back to using tracepoint address. */ |
| 4233 | lseek (trace_fd, tframe_offset, SEEK_SET); |
| 4234 | tfile_read ((gdb_byte *) &tpnum, 2); |
| 4235 | tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2, |
| 4236 | gdbarch_byte_order |
| 4237 | (target_gdbarch ())); |
| 4238 | |
| 4239 | tp = get_tracepoint_by_number_on_target (tpnum); |
| 4240 | /* FIXME this is a poor heuristic if multiple locations. */ |
| 4241 | if (tp && tp->base.loc) |
| 4242 | addr = tp->base.loc->address; |
| 4243 | |
| 4244 | /* Restore our seek position. */ |
| 4245 | cur_offset = saved_offset; |
| 4246 | lseek (trace_fd, cur_offset, SEEK_SET); |
| 4247 | return addr; |
| 4248 | } |
| 4249 | |
| 4250 | /* Given a type of search and some parameters, scan the collection of |
| 4251 | traceframes in the file looking for a match. When found, return |
| 4252 | both the traceframe and tracepoint number, otherwise -1 for |
| 4253 | each. */ |
| 4254 | |
| 4255 | static int |
| 4256 | tfile_trace_find (enum trace_find_type type, int num, |
| 4257 | ULONGEST addr1, ULONGEST addr2, int *tpp) |
| 4258 | { |
| 4259 | short tpnum; |
| 4260 | int tfnum = 0, found = 0; |
| 4261 | unsigned int data_size; |
| 4262 | struct tracepoint *tp; |
| 4263 | off_t offset, tframe_offset; |
| 4264 | ULONGEST tfaddr; |
| 4265 | |
| 4266 | if (num == -1) |
| 4267 | { |
| 4268 | if (tpp) |
| 4269 | *tpp = -1; |
| 4270 | return -1; |
| 4271 | } |
| 4272 | |
| 4273 | lseek (trace_fd, trace_frames_offset, SEEK_SET); |
| 4274 | offset = trace_frames_offset; |
| 4275 | while (1) |
| 4276 | { |
| 4277 | tframe_offset = offset; |
| 4278 | tfile_read ((gdb_byte *) &tpnum, 2); |
| 4279 | tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2, |
| 4280 | gdbarch_byte_order |
| 4281 | (target_gdbarch ())); |
| 4282 | offset += 2; |
| 4283 | if (tpnum == 0) |
| 4284 | break; |
| 4285 | tfile_read ((gdb_byte *) &data_size, 4); |
| 4286 | data_size = (unsigned int) extract_unsigned_integer |
| 4287 | ((gdb_byte *) &data_size, 4, |
| 4288 | gdbarch_byte_order (target_gdbarch ())); |
| 4289 | offset += 4; |
| 4290 | switch (type) |
| 4291 | { |
| 4292 | case tfind_number: |
| 4293 | if (tfnum == num) |
| 4294 | found = 1; |
| 4295 | break; |
| 4296 | case tfind_pc: |
| 4297 | tfaddr = tfile_get_traceframe_address (tframe_offset); |
| 4298 | if (tfaddr == addr1) |
| 4299 | found = 1; |
| 4300 | break; |
| 4301 | case tfind_tp: |
| 4302 | tp = get_tracepoint (num); |
| 4303 | if (tp && tpnum == tp->number_on_target) |
| 4304 | found = 1; |
| 4305 | break; |
| 4306 | case tfind_range: |
| 4307 | tfaddr = tfile_get_traceframe_address (tframe_offset); |
| 4308 | if (addr1 <= tfaddr && tfaddr <= addr2) |
| 4309 | found = 1; |
| 4310 | break; |
| 4311 | case tfind_outside: |
| 4312 | tfaddr = tfile_get_traceframe_address (tframe_offset); |
| 4313 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) |
| 4314 | found = 1; |
| 4315 | break; |
| 4316 | default: |
| 4317 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); |
| 4318 | } |
| 4319 | if (found) |
| 4320 | { |
| 4321 | if (tpp) |
| 4322 | *tpp = tpnum; |
| 4323 | cur_offset = offset; |
| 4324 | cur_data_size = data_size; |
| 4325 | |
| 4326 | return tfnum; |
| 4327 | } |
| 4328 | /* Skip past the traceframe's data. */ |
| 4329 | lseek (trace_fd, data_size, SEEK_CUR); |
| 4330 | offset += data_size; |
| 4331 | /* Update our own count of traceframes. */ |
| 4332 | ++tfnum; |
| 4333 | } |
| 4334 | /* Did not find what we were looking for. */ |
| 4335 | if (tpp) |
| 4336 | *tpp = -1; |
| 4337 | return -1; |
| 4338 | } |
| 4339 | |
| 4340 | /* Prototype of the callback passed to tframe_walk_blocks. */ |
| 4341 | typedef int (*walk_blocks_callback_func) (char blocktype, void *data); |
| 4342 | |
| 4343 | /* Callback for traceframe_walk_blocks, used to find a given block |
| 4344 | type in a traceframe. */ |
| 4345 | |
| 4346 | static int |
| 4347 | match_blocktype (char blocktype, void *data) |
| 4348 | { |
| 4349 | char *wantedp = data; |
| 4350 | |
| 4351 | if (*wantedp == blocktype) |
| 4352 | return 1; |
| 4353 | |
| 4354 | return 0; |
| 4355 | } |
| 4356 | |
| 4357 | /* Walk over all traceframe block starting at POS offset from |
| 4358 | CUR_OFFSET, and call CALLBACK for each block found, passing in DATA |
| 4359 | unmodified. If CALLBACK returns true, this returns the position in |
| 4360 | the traceframe where the block is found, relative to the start of |
| 4361 | the traceframe (cur_offset). Returns -1 if no callback call |
| 4362 | returned true, indicating that all blocks have been walked. */ |
| 4363 | |
| 4364 | static int |
| 4365 | traceframe_walk_blocks (walk_blocks_callback_func callback, |
| 4366 | int pos, void *data) |
| 4367 | { |
| 4368 | /* Iterate through a traceframe's blocks, looking for a block of the |
| 4369 | requested type. */ |
| 4370 | |
| 4371 | lseek (trace_fd, cur_offset + pos, SEEK_SET); |
| 4372 | while (pos < cur_data_size) |
| 4373 | { |
| 4374 | unsigned short mlen; |
| 4375 | char block_type; |
| 4376 | |
| 4377 | tfile_read (&block_type, 1); |
| 4378 | |
| 4379 | ++pos; |
| 4380 | |
| 4381 | if ((*callback) (block_type, data)) |
| 4382 | return pos; |
| 4383 | |
| 4384 | switch (block_type) |
| 4385 | { |
| 4386 | case 'R': |
| 4387 | lseek (trace_fd, cur_offset + pos + trace_regblock_size, SEEK_SET); |
| 4388 | pos += trace_regblock_size; |
| 4389 | break; |
| 4390 | case 'M': |
| 4391 | lseek (trace_fd, cur_offset + pos + 8, SEEK_SET); |
| 4392 | tfile_read ((gdb_byte *) &mlen, 2); |
| 4393 | mlen = (unsigned short) |
| 4394 | extract_unsigned_integer ((gdb_byte *) &mlen, 2, |
| 4395 | gdbarch_byte_order |
| 4396 | (target_gdbarch ())); |
| 4397 | lseek (trace_fd, mlen, SEEK_CUR); |
| 4398 | pos += (8 + 2 + mlen); |
| 4399 | break; |
| 4400 | case 'V': |
| 4401 | lseek (trace_fd, cur_offset + pos + 4 + 8, SEEK_SET); |
| 4402 | pos += (4 + 8); |
| 4403 | break; |
| 4404 | default: |
| 4405 | error (_("Unknown block type '%c' (0x%x) in trace frame"), |
| 4406 | block_type, block_type); |
| 4407 | break; |
| 4408 | } |
| 4409 | } |
| 4410 | |
| 4411 | return -1; |
| 4412 | } |
| 4413 | |
| 4414 | /* Convenience wrapper around traceframe_walk_blocks. Looks for the |
| 4415 | position offset of a block of type TYPE_WANTED in the current trace |
| 4416 | frame, starting at POS. Returns -1 if no such block was found. */ |
| 4417 | |
| 4418 | static int |
| 4419 | traceframe_find_block_type (char type_wanted, int pos) |
| 4420 | { |
| 4421 | return traceframe_walk_blocks (match_blocktype, pos, &type_wanted); |
| 4422 | } |
| 4423 | |
| 4424 | /* Look for a block of saved registers in the traceframe, and get the |
| 4425 | requested register from it. */ |
| 4426 | |
| 4427 | static void |
| 4428 | tfile_fetch_registers (struct target_ops *ops, |
| 4429 | struct regcache *regcache, int regno) |
| 4430 | { |
| 4431 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 4432 | int offset, regn, regsize, pc_regno; |
| 4433 | char *regs; |
| 4434 | |
| 4435 | /* An uninitialized reg size says we're not going to be |
| 4436 | successful at getting register blocks. */ |
| 4437 | if (!trace_regblock_size) |
| 4438 | return; |
| 4439 | |
| 4440 | regs = alloca (trace_regblock_size); |
| 4441 | |
| 4442 | if (traceframe_find_block_type ('R', 0) >= 0) |
| 4443 | { |
| 4444 | tfile_read (regs, trace_regblock_size); |
| 4445 | |
| 4446 | /* Assume the block is laid out in GDB register number order, |
| 4447 | each register with the size that it has in GDB. */ |
| 4448 | offset = 0; |
| 4449 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) |
| 4450 | { |
| 4451 | regsize = register_size (gdbarch, regn); |
| 4452 | /* Make sure we stay within block bounds. */ |
| 4453 | if (offset + regsize >= trace_regblock_size) |
| 4454 | break; |
| 4455 | if (regcache_register_status (regcache, regn) == REG_UNKNOWN) |
| 4456 | { |
| 4457 | if (regno == regn) |
| 4458 | { |
| 4459 | regcache_raw_supply (regcache, regno, regs + offset); |
| 4460 | break; |
| 4461 | } |
| 4462 | else if (regno == -1) |
| 4463 | { |
| 4464 | regcache_raw_supply (regcache, regn, regs + offset); |
| 4465 | } |
| 4466 | } |
| 4467 | offset += regsize; |
| 4468 | } |
| 4469 | return; |
| 4470 | } |
| 4471 | |
| 4472 | /* We get here if no register data has been found. Mark registers |
| 4473 | as unavailable. */ |
| 4474 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) |
| 4475 | regcache_raw_supply (regcache, regn, NULL); |
| 4476 | |
| 4477 | /* We can often usefully guess that the PC is going to be the same |
| 4478 | as the address of the tracepoint. */ |
| 4479 | pc_regno = gdbarch_pc_regnum (gdbarch); |
| 4480 | if (pc_regno >= 0 && (regno == -1 || regno == pc_regno)) |
| 4481 | { |
| 4482 | struct tracepoint *tp = get_tracepoint (tracepoint_number); |
| 4483 | |
| 4484 | if (tp && tp->base.loc) |
| 4485 | { |
| 4486 | /* But don't try to guess if tracepoint is multi-location... */ |
| 4487 | if (tp->base.loc->next) |
| 4488 | { |
| 4489 | warning (_("Tracepoint %d has multiple " |
| 4490 | "locations, cannot infer $pc"), |
| 4491 | tp->base.number); |
| 4492 | return; |
| 4493 | } |
| 4494 | /* ... or does while-stepping. */ |
| 4495 | if (tp->step_count > 0) |
| 4496 | { |
| 4497 | warning (_("Tracepoint %d does while-stepping, " |
| 4498 | "cannot infer $pc"), |
| 4499 | tp->base.number); |
| 4500 | return; |
| 4501 | } |
| 4502 | |
| 4503 | store_unsigned_integer (regs, register_size (gdbarch, pc_regno), |
| 4504 | gdbarch_byte_order (gdbarch), |
| 4505 | tp->base.loc->address); |
| 4506 | regcache_raw_supply (regcache, pc_regno, regs); |
| 4507 | } |
| 4508 | } |
| 4509 | } |
| 4510 | |
| 4511 | static LONGEST |
| 4512 | tfile_xfer_partial (struct target_ops *ops, enum target_object object, |
| 4513 | const char *annex, gdb_byte *readbuf, |
| 4514 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
| 4515 | { |
| 4516 | /* We're only doing regular memory for now. */ |
| 4517 | if (object != TARGET_OBJECT_MEMORY) |
| 4518 | return -1; |
| 4519 | |
| 4520 | if (readbuf == NULL) |
| 4521 | error (_("tfile_xfer_partial: trace file is read-only")); |
| 4522 | |
| 4523 | if (traceframe_number != -1) |
| 4524 | { |
| 4525 | int pos = 0; |
| 4526 | |
| 4527 | /* Iterate through the traceframe's blocks, looking for |
| 4528 | memory. */ |
| 4529 | while ((pos = traceframe_find_block_type ('M', pos)) >= 0) |
| 4530 | { |
| 4531 | ULONGEST maddr, amt; |
| 4532 | unsigned short mlen; |
| 4533 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
| 4534 | |
| 4535 | tfile_read ((gdb_byte *) &maddr, 8); |
| 4536 | maddr = extract_unsigned_integer ((gdb_byte *) &maddr, 8, |
| 4537 | byte_order); |
| 4538 | tfile_read ((gdb_byte *) &mlen, 2); |
| 4539 | mlen = (unsigned short) |
| 4540 | extract_unsigned_integer ((gdb_byte *) &mlen, 2, byte_order); |
| 4541 | |
| 4542 | /* If the block includes the first part of the desired |
| 4543 | range, return as much it has; GDB will re-request the |
| 4544 | remainder, which might be in a different block of this |
| 4545 | trace frame. */ |
| 4546 | if (maddr <= offset && offset < (maddr + mlen)) |
| 4547 | { |
| 4548 | amt = (maddr + mlen) - offset; |
| 4549 | if (amt > len) |
| 4550 | amt = len; |
| 4551 | |
| 4552 | if (maddr != offset) |
| 4553 | lseek (trace_fd, offset - maddr, SEEK_CUR); |
| 4554 | tfile_read (readbuf, amt); |
| 4555 | return amt; |
| 4556 | } |
| 4557 | |
| 4558 | /* Skip over this block. */ |
| 4559 | pos += (8 + 2 + mlen); |
| 4560 | } |
| 4561 | } |
| 4562 | |
| 4563 | /* It's unduly pedantic to refuse to look at the executable for |
| 4564 | read-only pieces; so do the equivalent of readonly regions aka |
| 4565 | QTro packet. */ |
| 4566 | /* FIXME account for relocation at some point. */ |
| 4567 | if (exec_bfd) |
| 4568 | { |
| 4569 | asection *s; |
| 4570 | bfd_size_type size; |
| 4571 | bfd_vma vma; |
| 4572 | |
| 4573 | for (s = exec_bfd->sections; s; s = s->next) |
| 4574 | { |
| 4575 | if ((s->flags & SEC_LOAD) == 0 |
| 4576 | || (s->flags & SEC_READONLY) == 0) |
| 4577 | continue; |
| 4578 | |
| 4579 | vma = s->vma; |
| 4580 | size = bfd_get_section_size (s); |
| 4581 | if (vma <= offset && offset < (vma + size)) |
| 4582 | { |
| 4583 | ULONGEST amt; |
| 4584 | |
| 4585 | amt = (vma + size) - offset; |
| 4586 | if (amt > len) |
| 4587 | amt = len; |
| 4588 | |
| 4589 | amt = bfd_get_section_contents (exec_bfd, s, |
| 4590 | readbuf, offset - vma, amt); |
| 4591 | return amt; |
| 4592 | } |
| 4593 | } |
| 4594 | } |
| 4595 | |
| 4596 | /* Indicate failure to find the requested memory block. */ |
| 4597 | return -1; |
| 4598 | } |
| 4599 | |
| 4600 | /* Iterate through the blocks of a trace frame, looking for a 'V' |
| 4601 | block with a matching tsv number. */ |
| 4602 | |
| 4603 | static int |
| 4604 | tfile_get_trace_state_variable_value (int tsvnum, LONGEST *val) |
| 4605 | { |
| 4606 | int pos; |
| 4607 | |
| 4608 | pos = 0; |
| 4609 | while ((pos = traceframe_find_block_type ('V', pos)) >= 0) |
| 4610 | { |
| 4611 | int vnum; |
| 4612 | |
| 4613 | tfile_read ((gdb_byte *) &vnum, 4); |
| 4614 | vnum = (int) extract_signed_integer ((gdb_byte *) &vnum, 4, |
| 4615 | gdbarch_byte_order |
| 4616 | (target_gdbarch ())); |
| 4617 | if (tsvnum == vnum) |
| 4618 | { |
| 4619 | tfile_read ((gdb_byte *) val, 8); |
| 4620 | *val = extract_signed_integer ((gdb_byte *) val, 8, |
| 4621 | gdbarch_byte_order |
| 4622 | (target_gdbarch ())); |
| 4623 | return 1; |
| 4624 | } |
| 4625 | pos += (4 + 8); |
| 4626 | } |
| 4627 | |
| 4628 | /* Didn't find anything. */ |
| 4629 | return 0; |
| 4630 | } |
| 4631 | |
| 4632 | static int |
| 4633 | tfile_has_all_memory (struct target_ops *ops) |
| 4634 | { |
| 4635 | return 1; |
| 4636 | } |
| 4637 | |
| 4638 | static int |
| 4639 | tfile_has_memory (struct target_ops *ops) |
| 4640 | { |
| 4641 | return 1; |
| 4642 | } |
| 4643 | |
| 4644 | static int |
| 4645 | tfile_has_stack (struct target_ops *ops) |
| 4646 | { |
| 4647 | return traceframe_number != -1; |
| 4648 | } |
| 4649 | |
| 4650 | static int |
| 4651 | tfile_has_registers (struct target_ops *ops) |
| 4652 | { |
| 4653 | return traceframe_number != -1; |
| 4654 | } |
| 4655 | |
| 4656 | static int |
| 4657 | tfile_thread_alive (struct target_ops *ops, ptid_t ptid) |
| 4658 | { |
| 4659 | return 1; |
| 4660 | } |
| 4661 | |
| 4662 | /* Callback for traceframe_walk_blocks. Builds a traceframe_info |
| 4663 | object for the tfile target's current traceframe. */ |
| 4664 | |
| 4665 | static int |
| 4666 | build_traceframe_info (char blocktype, void *data) |
| 4667 | { |
| 4668 | struct traceframe_info *info = data; |
| 4669 | |
| 4670 | switch (blocktype) |
| 4671 | { |
| 4672 | case 'M': |
| 4673 | { |
| 4674 | struct mem_range *r; |
| 4675 | ULONGEST maddr; |
| 4676 | unsigned short mlen; |
| 4677 | |
| 4678 | tfile_read ((gdb_byte *) &maddr, 8); |
| 4679 | tfile_read ((gdb_byte *) &mlen, 2); |
| 4680 | |
| 4681 | r = VEC_safe_push (mem_range_s, info->memory, NULL); |
| 4682 | |
| 4683 | r->start = maddr; |
| 4684 | r->length = mlen; |
| 4685 | break; |
| 4686 | } |
| 4687 | case 'V': |
| 4688 | case 'R': |
| 4689 | case 'S': |
| 4690 | { |
| 4691 | break; |
| 4692 | } |
| 4693 | default: |
| 4694 | warning (_("Unhandled trace block type (%d) '%c ' " |
| 4695 | "while building trace frame info."), |
| 4696 | blocktype, blocktype); |
| 4697 | break; |
| 4698 | } |
| 4699 | |
| 4700 | return 0; |
| 4701 | } |
| 4702 | |
| 4703 | static struct traceframe_info * |
| 4704 | tfile_traceframe_info (void) |
| 4705 | { |
| 4706 | struct traceframe_info *info = XCNEW (struct traceframe_info); |
| 4707 | |
| 4708 | traceframe_walk_blocks (build_traceframe_info, 0, info); |
| 4709 | return info; |
| 4710 | } |
| 4711 | |
| 4712 | static void |
| 4713 | init_tfile_ops (void) |
| 4714 | { |
| 4715 | tfile_ops.to_shortname = "tfile"; |
| 4716 | tfile_ops.to_longname = "Local trace dump file"; |
| 4717 | tfile_ops.to_doc |
| 4718 | = "Use a trace file as a target. Specify the filename of the trace file."; |
| 4719 | tfile_ops.to_open = tfile_open; |
| 4720 | tfile_ops.to_close = tfile_close; |
| 4721 | tfile_ops.to_fetch_registers = tfile_fetch_registers; |
| 4722 | tfile_ops.to_xfer_partial = tfile_xfer_partial; |
| 4723 | tfile_ops.to_files_info = tfile_files_info; |
| 4724 | tfile_ops.to_get_trace_status = tfile_get_trace_status; |
| 4725 | tfile_ops.to_get_tracepoint_status = tfile_get_tracepoint_status; |
| 4726 | tfile_ops.to_trace_find = tfile_trace_find; |
| 4727 | tfile_ops.to_get_trace_state_variable_value |
| 4728 | = tfile_get_trace_state_variable_value; |
| 4729 | tfile_ops.to_stratum = process_stratum; |
| 4730 | tfile_ops.to_has_all_memory = tfile_has_all_memory; |
| 4731 | tfile_ops.to_has_memory = tfile_has_memory; |
| 4732 | tfile_ops.to_has_stack = tfile_has_stack; |
| 4733 | tfile_ops.to_has_registers = tfile_has_registers; |
| 4734 | tfile_ops.to_traceframe_info = tfile_traceframe_info; |
| 4735 | tfile_ops.to_thread_alive = tfile_thread_alive; |
| 4736 | tfile_ops.to_magic = OPS_MAGIC; |
| 4737 | } |
| 4738 | |
| 4739 | void |
| 4740 | free_current_marker (void *arg) |
| 4741 | { |
| 4742 | struct static_tracepoint_marker **marker_p = arg; |
| 4743 | |
| 4744 | if (*marker_p != NULL) |
| 4745 | { |
| 4746 | release_static_tracepoint_marker (*marker_p); |
| 4747 | xfree (*marker_p); |
| 4748 | } |
| 4749 | else |
| 4750 | *marker_p = NULL; |
| 4751 | } |
| 4752 | |
| 4753 | /* Given a line of text defining a static tracepoint marker, parse it |
| 4754 | into a "static tracepoint marker" object. Throws an error is |
| 4755 | parsing fails. If PP is non-null, it points to one past the end of |
| 4756 | the parsed marker definition. */ |
| 4757 | |
| 4758 | void |
| 4759 | parse_static_tracepoint_marker_definition (char *line, char **pp, |
| 4760 | struct static_tracepoint_marker *marker) |
| 4761 | { |
| 4762 | char *p, *endp; |
| 4763 | ULONGEST addr; |
| 4764 | int end; |
| 4765 | |
| 4766 | p = line; |
| 4767 | p = unpack_varlen_hex (p, &addr); |
| 4768 | p++; /* skip a colon */ |
| 4769 | |
| 4770 | marker->gdbarch = target_gdbarch (); |
| 4771 | marker->address = (CORE_ADDR) addr; |
| 4772 | |
| 4773 | endp = strchr (p, ':'); |
| 4774 | if (endp == NULL) |
| 4775 | error (_("bad marker definition: %s"), line); |
| 4776 | |
| 4777 | marker->str_id = xmalloc (endp - p + 1); |
| 4778 | end = hex2bin (p, (gdb_byte *) marker->str_id, (endp - p + 1) / 2); |
| 4779 | marker->str_id[end] = '\0'; |
| 4780 | |
| 4781 | p += 2 * end; |
| 4782 | p++; /* skip a colon */ |
| 4783 | |
| 4784 | marker->extra = xmalloc (strlen (p) + 1); |
| 4785 | end = hex2bin (p, (gdb_byte *) marker->extra, strlen (p) / 2); |
| 4786 | marker->extra[end] = '\0'; |
| 4787 | |
| 4788 | if (pp) |
| 4789 | *pp = p; |
| 4790 | } |
| 4791 | |
| 4792 | /* Release a static tracepoint marker's contents. Note that the |
| 4793 | object itself isn't released here. There objects are usually on |
| 4794 | the stack. */ |
| 4795 | |
| 4796 | void |
| 4797 | release_static_tracepoint_marker (struct static_tracepoint_marker *marker) |
| 4798 | { |
| 4799 | xfree (marker->str_id); |
| 4800 | marker->str_id = NULL; |
| 4801 | } |
| 4802 | |
| 4803 | /* Print MARKER to gdb_stdout. */ |
| 4804 | |
| 4805 | static void |
| 4806 | print_one_static_tracepoint_marker (int count, |
| 4807 | struct static_tracepoint_marker *marker) |
| 4808 | { |
| 4809 | struct command_line *l; |
| 4810 | struct symbol *sym; |
| 4811 | |
| 4812 | char wrap_indent[80]; |
| 4813 | char extra_field_indent[80]; |
| 4814 | struct ui_out *uiout = current_uiout; |
| 4815 | struct cleanup *bkpt_chain; |
| 4816 | VEC(breakpoint_p) *tracepoints; |
| 4817 | |
| 4818 | struct symtab_and_line sal; |
| 4819 | |
| 4820 | init_sal (&sal); |
| 4821 | |
| 4822 | sal.pc = marker->address; |
| 4823 | |
| 4824 | tracepoints = static_tracepoints_here (marker->address); |
| 4825 | |
| 4826 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "marker"); |
| 4827 | |
| 4828 | /* A counter field to help readability. This is not a stable |
| 4829 | identifier! */ |
| 4830 | ui_out_field_int (uiout, "count", count); |
| 4831 | |
| 4832 | ui_out_field_string (uiout, "marker-id", marker->str_id); |
| 4833 | |
| 4834 | ui_out_field_fmt (uiout, "enabled", "%c", |
| 4835 | !VEC_empty (breakpoint_p, tracepoints) ? 'y' : 'n'); |
| 4836 | ui_out_spaces (uiout, 2); |
| 4837 | |
| 4838 | strcpy (wrap_indent, " "); |
| 4839 | |
| 4840 | if (gdbarch_addr_bit (marker->gdbarch) <= 32) |
| 4841 | strcat (wrap_indent, " "); |
| 4842 | else |
| 4843 | strcat (wrap_indent, " "); |
| 4844 | |
| 4845 | strcpy (extra_field_indent, " "); |
| 4846 | |
| 4847 | ui_out_field_core_addr (uiout, "addr", marker->gdbarch, marker->address); |
| 4848 | |
| 4849 | sal = find_pc_line (marker->address, 0); |
| 4850 | sym = find_pc_sect_function (marker->address, NULL); |
| 4851 | if (sym) |
| 4852 | { |
| 4853 | ui_out_text (uiout, "in "); |
| 4854 | ui_out_field_string (uiout, "func", |
| 4855 | SYMBOL_PRINT_NAME (sym)); |
| 4856 | ui_out_wrap_hint (uiout, wrap_indent); |
| 4857 | ui_out_text (uiout, " at "); |
| 4858 | } |
| 4859 | else |
| 4860 | ui_out_field_skip (uiout, "func"); |
| 4861 | |
| 4862 | if (sal.symtab != NULL) |
| 4863 | { |
| 4864 | ui_out_field_string (uiout, "file", |
| 4865 | symtab_to_filename_for_display (sal.symtab)); |
| 4866 | ui_out_text (uiout, ":"); |
| 4867 | |
| 4868 | if (ui_out_is_mi_like_p (uiout)) |
| 4869 | { |
| 4870 | const char *fullname = symtab_to_fullname (sal.symtab); |
| 4871 | |
| 4872 | ui_out_field_string (uiout, "fullname", fullname); |
| 4873 | } |
| 4874 | else |
| 4875 | ui_out_field_skip (uiout, "fullname"); |
| 4876 | |
| 4877 | ui_out_field_int (uiout, "line", sal.line); |
| 4878 | } |
| 4879 | else |
| 4880 | { |
| 4881 | ui_out_field_skip (uiout, "fullname"); |
| 4882 | ui_out_field_skip (uiout, "line"); |
| 4883 | } |
| 4884 | |
| 4885 | ui_out_text (uiout, "\n"); |
| 4886 | ui_out_text (uiout, extra_field_indent); |
| 4887 | ui_out_text (uiout, _("Data: \"")); |
| 4888 | ui_out_field_string (uiout, "extra-data", marker->extra); |
| 4889 | ui_out_text (uiout, "\"\n"); |
| 4890 | |
| 4891 | if (!VEC_empty (breakpoint_p, tracepoints)) |
| 4892 | { |
| 4893 | struct cleanup *cleanup_chain; |
| 4894 | int ix; |
| 4895 | struct breakpoint *b; |
| 4896 | |
| 4897 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, |
| 4898 | "tracepoints-at"); |
| 4899 | |
| 4900 | ui_out_text (uiout, extra_field_indent); |
| 4901 | ui_out_text (uiout, _("Probed by static tracepoints: ")); |
| 4902 | for (ix = 0; VEC_iterate(breakpoint_p, tracepoints, ix, b); ix++) |
| 4903 | { |
| 4904 | if (ix > 0) |
| 4905 | ui_out_text (uiout, ", "); |
| 4906 | ui_out_text (uiout, "#"); |
| 4907 | ui_out_field_int (uiout, "tracepoint-id", b->number); |
| 4908 | } |
| 4909 | |
| 4910 | do_cleanups (cleanup_chain); |
| 4911 | |
| 4912 | if (ui_out_is_mi_like_p (uiout)) |
| 4913 | ui_out_field_int (uiout, "number-of-tracepoints", |
| 4914 | VEC_length(breakpoint_p, tracepoints)); |
| 4915 | else |
| 4916 | ui_out_text (uiout, "\n"); |
| 4917 | } |
| 4918 | VEC_free (breakpoint_p, tracepoints); |
| 4919 | |
| 4920 | do_cleanups (bkpt_chain); |
| 4921 | } |
| 4922 | |
| 4923 | static void |
| 4924 | info_static_tracepoint_markers_command (char *arg, int from_tty) |
| 4925 | { |
| 4926 | VEC(static_tracepoint_marker_p) *markers; |
| 4927 | struct cleanup *old_chain; |
| 4928 | struct static_tracepoint_marker *marker; |
| 4929 | struct ui_out *uiout = current_uiout; |
| 4930 | int i; |
| 4931 | |
| 4932 | /* We don't have to check target_can_use_agent and agent's capability on |
| 4933 | static tracepoint here, in order to be compatible with older GDBserver. |
| 4934 | We don't check USE_AGENT is true or not, because static tracepoints |
| 4935 | don't work without in-process agent, so we don't bother users to type |
| 4936 | `set agent on' when to use static tracepoint. */ |
| 4937 | |
| 4938 | old_chain |
| 4939 | = make_cleanup_ui_out_table_begin_end (uiout, 5, -1, |
| 4940 | "StaticTracepointMarkersTable"); |
| 4941 | |
| 4942 | ui_out_table_header (uiout, 7, ui_left, "counter", "Cnt"); |
| 4943 | |
| 4944 | ui_out_table_header (uiout, 40, ui_left, "marker-id", "ID"); |
| 4945 | |
| 4946 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); |
| 4947 | if (gdbarch_addr_bit (target_gdbarch ()) <= 32) |
| 4948 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address"); |
| 4949 | else |
| 4950 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address"); |
| 4951 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); |
| 4952 | |
| 4953 | ui_out_table_body (uiout); |
| 4954 | |
| 4955 | markers = target_static_tracepoint_markers_by_strid (NULL); |
| 4956 | make_cleanup (VEC_cleanup (static_tracepoint_marker_p), &markers); |
| 4957 | |
| 4958 | for (i = 0; |
| 4959 | VEC_iterate (static_tracepoint_marker_p, |
| 4960 | markers, i, marker); |
| 4961 | i++) |
| 4962 | { |
| 4963 | print_one_static_tracepoint_marker (i + 1, marker); |
| 4964 | release_static_tracepoint_marker (marker); |
| 4965 | } |
| 4966 | |
| 4967 | do_cleanups (old_chain); |
| 4968 | } |
| 4969 | |
| 4970 | /* The $_sdata convenience variable is a bit special. We don't know |
| 4971 | for sure type of the value until we actually have a chance to fetch |
| 4972 | the data --- the size of the object depends on what has been |
| 4973 | collected. We solve this by making $_sdata be an internalvar that |
| 4974 | creates a new value on access. */ |
| 4975 | |
| 4976 | /* Return a new value with the correct type for the sdata object of |
| 4977 | the current trace frame. Return a void value if there's no object |
| 4978 | available. */ |
| 4979 | |
| 4980 | static struct value * |
| 4981 | sdata_make_value (struct gdbarch *gdbarch, struct internalvar *var, |
| 4982 | void *ignore) |
| 4983 | { |
| 4984 | LONGEST size; |
| 4985 | gdb_byte *buf; |
| 4986 | |
| 4987 | /* We need to read the whole object before we know its size. */ |
| 4988 | size = target_read_alloc (¤t_target, |
| 4989 | TARGET_OBJECT_STATIC_TRACE_DATA, |
| 4990 | NULL, &buf); |
| 4991 | if (size >= 0) |
| 4992 | { |
| 4993 | struct value *v; |
| 4994 | struct type *type; |
| 4995 | |
| 4996 | type = init_vector_type (builtin_type (gdbarch)->builtin_true_char, |
| 4997 | size); |
| 4998 | v = allocate_value (type); |
| 4999 | memcpy (value_contents_raw (v), buf, size); |
| 5000 | xfree (buf); |
| 5001 | return v; |
| 5002 | } |
| 5003 | else |
| 5004 | return allocate_value (builtin_type (gdbarch)->builtin_void); |
| 5005 | } |
| 5006 | |
| 5007 | #if !defined(HAVE_LIBEXPAT) |
| 5008 | |
| 5009 | struct traceframe_info * |
| 5010 | parse_traceframe_info (const char *tframe_info) |
| 5011 | { |
| 5012 | static int have_warned; |
| 5013 | |
| 5014 | if (!have_warned) |
| 5015 | { |
| 5016 | have_warned = 1; |
| 5017 | warning (_("Can not parse XML trace frame info; XML support " |
| 5018 | "was disabled at compile time")); |
| 5019 | } |
| 5020 | |
| 5021 | return NULL; |
| 5022 | } |
| 5023 | |
| 5024 | #else /* HAVE_LIBEXPAT */ |
| 5025 | |
| 5026 | #include "xml-support.h" |
| 5027 | |
| 5028 | /* Handle the start of a <memory> element. */ |
| 5029 | |
| 5030 | static void |
| 5031 | traceframe_info_start_memory (struct gdb_xml_parser *parser, |
| 5032 | const struct gdb_xml_element *element, |
| 5033 | void *user_data, VEC(gdb_xml_value_s) *attributes) |
| 5034 | { |
| 5035 | struct traceframe_info *info = user_data; |
| 5036 | struct mem_range *r = VEC_safe_push (mem_range_s, info->memory, NULL); |
| 5037 | ULONGEST *start_p, *length_p; |
| 5038 | |
| 5039 | start_p = xml_find_attribute (attributes, "start")->value; |
| 5040 | length_p = xml_find_attribute (attributes, "length")->value; |
| 5041 | |
| 5042 | r->start = *start_p; |
| 5043 | r->length = *length_p; |
| 5044 | } |
| 5045 | |
| 5046 | /* Discard the constructed trace frame info (if an error occurs). */ |
| 5047 | |
| 5048 | static void |
| 5049 | free_result (void *p) |
| 5050 | { |
| 5051 | struct traceframe_info *result = p; |
| 5052 | |
| 5053 | free_traceframe_info (result); |
| 5054 | } |
| 5055 | |
| 5056 | /* The allowed elements and attributes for an XML memory map. */ |
| 5057 | |
| 5058 | static const struct gdb_xml_attribute memory_attributes[] = { |
| 5059 | { "start", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, |
| 5060 | { "length", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, |
| 5061 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
| 5062 | }; |
| 5063 | |
| 5064 | static const struct gdb_xml_element traceframe_info_children[] = { |
| 5065 | { "memory", memory_attributes, NULL, |
| 5066 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, |
| 5067 | traceframe_info_start_memory, NULL }, |
| 5068 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } |
| 5069 | }; |
| 5070 | |
| 5071 | static const struct gdb_xml_element traceframe_info_elements[] = { |
| 5072 | { "traceframe-info", NULL, traceframe_info_children, GDB_XML_EF_NONE, |
| 5073 | NULL, NULL }, |
| 5074 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } |
| 5075 | }; |
| 5076 | |
| 5077 | /* Parse a traceframe-info XML document. */ |
| 5078 | |
| 5079 | struct traceframe_info * |
| 5080 | parse_traceframe_info (const char *tframe_info) |
| 5081 | { |
| 5082 | struct traceframe_info *result; |
| 5083 | struct cleanup *back_to; |
| 5084 | |
| 5085 | result = XCNEW (struct traceframe_info); |
| 5086 | back_to = make_cleanup (free_result, result); |
| 5087 | |
| 5088 | if (gdb_xml_parse_quick (_("trace frame info"), |
| 5089 | "traceframe-info.dtd", traceframe_info_elements, |
| 5090 | tframe_info, result) == 0) |
| 5091 | { |
| 5092 | /* Parsed successfully, keep the result. */ |
| 5093 | discard_cleanups (back_to); |
| 5094 | |
| 5095 | return result; |
| 5096 | } |
| 5097 | |
| 5098 | do_cleanups (back_to); |
| 5099 | return NULL; |
| 5100 | } |
| 5101 | |
| 5102 | #endif /* HAVE_LIBEXPAT */ |
| 5103 | |
| 5104 | /* Returns the traceframe_info object for the current traceframe. |
| 5105 | This is where we avoid re-fetching the object from the target if we |
| 5106 | already have it cached. */ |
| 5107 | |
| 5108 | static struct traceframe_info * |
| 5109 | get_traceframe_info (void) |
| 5110 | { |
| 5111 | if (traceframe_info == NULL) |
| 5112 | traceframe_info = target_traceframe_info (); |
| 5113 | |
| 5114 | return traceframe_info; |
| 5115 | } |
| 5116 | |
| 5117 | /* If the target supports the query, return in RESULT the set of |
| 5118 | collected memory in the current traceframe, found within the LEN |
| 5119 | bytes range starting at MEMADDR. Returns true if the target |
| 5120 | supports the query, otherwise returns false, and RESULT is left |
| 5121 | undefined. */ |
| 5122 | |
| 5123 | int |
| 5124 | traceframe_available_memory (VEC(mem_range_s) **result, |
| 5125 | CORE_ADDR memaddr, ULONGEST len) |
| 5126 | { |
| 5127 | struct traceframe_info *info = get_traceframe_info (); |
| 5128 | |
| 5129 | if (info != NULL) |
| 5130 | { |
| 5131 | struct mem_range *r; |
| 5132 | int i; |
| 5133 | |
| 5134 | *result = NULL; |
| 5135 | |
| 5136 | for (i = 0; VEC_iterate (mem_range_s, info->memory, i, r); i++) |
| 5137 | if (mem_ranges_overlap (r->start, r->length, memaddr, len)) |
| 5138 | { |
| 5139 | ULONGEST lo1, hi1, lo2, hi2; |
| 5140 | struct mem_range *nr; |
| 5141 | |
| 5142 | lo1 = memaddr; |
| 5143 | hi1 = memaddr + len; |
| 5144 | |
| 5145 | lo2 = r->start; |
| 5146 | hi2 = r->start + r->length; |
| 5147 | |
| 5148 | nr = VEC_safe_push (mem_range_s, *result, NULL); |
| 5149 | |
| 5150 | nr->start = max (lo1, lo2); |
| 5151 | nr->length = min (hi1, hi2) - nr->start; |
| 5152 | } |
| 5153 | |
| 5154 | normalize_mem_ranges (*result); |
| 5155 | return 1; |
| 5156 | } |
| 5157 | |
| 5158 | return 0; |
| 5159 | } |
| 5160 | |
| 5161 | /* Implementation of `sdata' variable. */ |
| 5162 | |
| 5163 | static const struct internalvar_funcs sdata_funcs = |
| 5164 | { |
| 5165 | sdata_make_value, |
| 5166 | NULL, |
| 5167 | NULL |
| 5168 | }; |
| 5169 | |
| 5170 | /* module initialization */ |
| 5171 | void |
| 5172 | _initialize_tracepoint (void) |
| 5173 | { |
| 5174 | struct cmd_list_element *c; |
| 5175 | |
| 5176 | /* Explicitly create without lookup, since that tries to create a |
| 5177 | value with a void typed value, and when we get here, gdbarch |
| 5178 | isn't initialized yet. At this point, we're quite sure there |
| 5179 | isn't another convenience variable of the same name. */ |
| 5180 | create_internalvar_type_lazy ("_sdata", &sdata_funcs, NULL); |
| 5181 | |
| 5182 | traceframe_number = -1; |
| 5183 | tracepoint_number = -1; |
| 5184 | |
| 5185 | if (tracepoint_list.list == NULL) |
| 5186 | { |
| 5187 | tracepoint_list.listsize = 128; |
| 5188 | tracepoint_list.list = xmalloc |
| 5189 | (tracepoint_list.listsize * sizeof (struct memrange)); |
| 5190 | } |
| 5191 | if (tracepoint_list.aexpr_list == NULL) |
| 5192 | { |
| 5193 | tracepoint_list.aexpr_listsize = 128; |
| 5194 | tracepoint_list.aexpr_list = xmalloc |
| 5195 | (tracepoint_list.aexpr_listsize * sizeof (struct agent_expr *)); |
| 5196 | } |
| 5197 | |
| 5198 | if (stepping_list.list == NULL) |
| 5199 | { |
| 5200 | stepping_list.listsize = 128; |
| 5201 | stepping_list.list = xmalloc |
| 5202 | (stepping_list.listsize * sizeof (struct memrange)); |
| 5203 | } |
| 5204 | |
| 5205 | if (stepping_list.aexpr_list == NULL) |
| 5206 | { |
| 5207 | stepping_list.aexpr_listsize = 128; |
| 5208 | stepping_list.aexpr_list = xmalloc |
| 5209 | (stepping_list.aexpr_listsize * sizeof (struct agent_expr *)); |
| 5210 | } |
| 5211 | |
| 5212 | add_info ("scope", scope_info, |
| 5213 | _("List the variables local to a scope")); |
| 5214 | |
| 5215 | add_cmd ("tracepoints", class_trace, NULL, |
| 5216 | _("Tracing of program execution without stopping the program."), |
| 5217 | &cmdlist); |
| 5218 | |
| 5219 | add_com ("tdump", class_trace, trace_dump_command, |
| 5220 | _("Print everything collected at the current tracepoint.")); |
| 5221 | |
| 5222 | add_com ("tsave", class_trace, trace_save_command, _("\ |
| 5223 | Save the trace data to a file.\n\ |
| 5224 | Use the '-r' option to direct the target to save directly to the file,\n\ |
| 5225 | using its own filesystem.")); |
| 5226 | |
| 5227 | c = add_com ("tvariable", class_trace, trace_variable_command,_("\ |
| 5228 | Define a trace state variable.\n\ |
| 5229 | Argument is a $-prefixed name, optionally followed\n\ |
| 5230 | by '=' and an expression that sets the initial value\n\ |
| 5231 | at the start of tracing.")); |
| 5232 | set_cmd_completer (c, expression_completer); |
| 5233 | |
| 5234 | add_cmd ("tvariable", class_trace, delete_trace_variable_command, _("\ |
| 5235 | Delete one or more trace state variables.\n\ |
| 5236 | Arguments are the names of the variables to delete.\n\ |
| 5237 | If no arguments are supplied, delete all variables."), &deletelist); |
| 5238 | /* FIXME add a trace variable completer. */ |
| 5239 | |
| 5240 | add_info ("tvariables", tvariables_info, _("\ |
| 5241 | Status of trace state variables and their values.\n\ |
| 5242 | ")); |
| 5243 | |
| 5244 | add_info ("static-tracepoint-markers", |
| 5245 | info_static_tracepoint_markers_command, _("\ |
| 5246 | List target static tracepoints markers.\n\ |
| 5247 | ")); |
| 5248 | |
| 5249 | add_prefix_cmd ("tfind", class_trace, trace_find_command, _("\ |
| 5250 | Select a trace frame;\n\ |
| 5251 | No argument means forward by one frame; '-' means backward by one frame."), |
| 5252 | &tfindlist, "tfind ", 1, &cmdlist); |
| 5253 | |
| 5254 | add_cmd ("outside", class_trace, trace_find_outside_command, _("\ |
| 5255 | Select a trace frame whose PC is outside the given range (exclusive).\n\ |
| 5256 | Usage: tfind outside addr1, addr2"), |
| 5257 | &tfindlist); |
| 5258 | |
| 5259 | add_cmd ("range", class_trace, trace_find_range_command, _("\ |
| 5260 | Select a trace frame whose PC is in the given range (inclusive).\n\ |
| 5261 | Usage: tfind range addr1,addr2"), |
| 5262 | &tfindlist); |
| 5263 | |
| 5264 | add_cmd ("line", class_trace, trace_find_line_command, _("\ |
| 5265 | Select a trace frame by source line.\n\ |
| 5266 | Argument can be a line number (with optional source file),\n\ |
| 5267 | a function name, or '*' followed by an address.\n\ |
| 5268 | Default argument is 'the next source line that was traced'."), |
| 5269 | &tfindlist); |
| 5270 | |
| 5271 | add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, _("\ |
| 5272 | Select a trace frame by tracepoint number.\n\ |
| 5273 | Default is the tracepoint for the current trace frame."), |
| 5274 | &tfindlist); |
| 5275 | |
| 5276 | add_cmd ("pc", class_trace, trace_find_pc_command, _("\ |
| 5277 | Select a trace frame by PC.\n\ |
| 5278 | Default is the current PC, or the PC of the current trace frame."), |
| 5279 | &tfindlist); |
| 5280 | |
| 5281 | add_cmd ("end", class_trace, trace_find_end_command, _("\ |
| 5282 | De-select any trace frame and resume 'live' debugging."), |
| 5283 | &tfindlist); |
| 5284 | |
| 5285 | add_alias_cmd ("none", "end", class_trace, 0, &tfindlist); |
| 5286 | |
| 5287 | add_cmd ("start", class_trace, trace_find_start_command, |
| 5288 | _("Select the first trace frame in the trace buffer."), |
| 5289 | &tfindlist); |
| 5290 | |
| 5291 | add_com ("tstatus", class_trace, trace_status_command, |
| 5292 | _("Display the status of the current trace data collection.")); |
| 5293 | |
| 5294 | add_com ("tstop", class_trace, trace_stop_command, _("\ |
| 5295 | Stop trace data collection.\n\ |
| 5296 | Usage: tstop [ <notes> ... ]\n\ |
| 5297 | Any arguments supplied are recorded with the trace as a stop reason and\n\ |
| 5298 | reported by tstatus (if the target supports trace notes).")); |
| 5299 | |
| 5300 | add_com ("tstart", class_trace, trace_start_command, _("\ |
| 5301 | Start trace data collection.\n\ |
| 5302 | Usage: tstart [ <notes> ... ]\n\ |
| 5303 | Any arguments supplied are recorded with the trace as a note and\n\ |
| 5304 | reported by tstatus (if the target supports trace notes).")); |
| 5305 | |
| 5306 | add_com ("end", class_trace, end_actions_pseudocommand, _("\ |
| 5307 | Ends a list of commands or actions.\n\ |
| 5308 | Several GDB commands allow you to enter a list of commands or actions.\n\ |
| 5309 | Entering \"end\" on a line by itself is the normal way to terminate\n\ |
| 5310 | such a list.\n\n\ |
| 5311 | Note: the \"end\" command cannot be used at the gdb prompt.")); |
| 5312 | |
| 5313 | add_com ("while-stepping", class_trace, while_stepping_pseudocommand, _("\ |
| 5314 | Specify single-stepping behavior at a tracepoint.\n\ |
| 5315 | Argument is number of instructions to trace in single-step mode\n\ |
| 5316 | following the tracepoint. This command is normally followed by\n\ |
| 5317 | one or more \"collect\" commands, to specify what to collect\n\ |
| 5318 | while single-stepping.\n\n\ |
| 5319 | Note: this command can only be used in a tracepoint \"actions\" list.")); |
| 5320 | |
| 5321 | add_com_alias ("ws", "while-stepping", class_alias, 0); |
| 5322 | add_com_alias ("stepping", "while-stepping", class_alias, 0); |
| 5323 | |
| 5324 | add_com ("collect", class_trace, collect_pseudocommand, _("\ |
| 5325 | Specify one or more data items to be collected at a tracepoint.\n\ |
| 5326 | Accepts a comma-separated list of (one or more) expressions. GDB will\n\ |
| 5327 | collect all data (variables, registers) referenced by that expression.\n\ |
| 5328 | Also accepts the following special arguments:\n\ |
| 5329 | $regs -- all registers.\n\ |
| 5330 | $args -- all function arguments.\n\ |
| 5331 | $locals -- all variables local to the block/function scope.\n\ |
| 5332 | $_sdata -- static tracepoint data (ignored for non-static tracepoints).\n\ |
| 5333 | Note: this command can only be used in a tracepoint \"actions\" list.")); |
| 5334 | |
| 5335 | add_com ("teval", class_trace, teval_pseudocommand, _("\ |
| 5336 | Specify one or more expressions to be evaluated at a tracepoint.\n\ |
| 5337 | Accepts a comma-separated list of (one or more) expressions.\n\ |
| 5338 | The result of each evaluation will be discarded.\n\ |
| 5339 | Note: this command can only be used in a tracepoint \"actions\" list.")); |
| 5340 | |
| 5341 | add_com ("actions", class_trace, trace_actions_command, _("\ |
| 5342 | Specify the actions to be taken at a tracepoint.\n\ |
| 5343 | Tracepoint actions may include collecting of specified data,\n\ |
| 5344 | single-stepping, or enabling/disabling other tracepoints,\n\ |
| 5345 | depending on target's capabilities.")); |
| 5346 | |
| 5347 | default_collect = xstrdup (""); |
| 5348 | add_setshow_string_cmd ("default-collect", class_trace, |
| 5349 | &default_collect, _("\ |
| 5350 | Set the list of expressions to collect by default"), _("\ |
| 5351 | Show the list of expressions to collect by default"), NULL, |
| 5352 | NULL, NULL, |
| 5353 | &setlist, &showlist); |
| 5354 | |
| 5355 | add_setshow_boolean_cmd ("disconnected-tracing", no_class, |
| 5356 | &disconnected_tracing, _("\ |
| 5357 | Set whether tracing continues after GDB disconnects."), _("\ |
| 5358 | Show whether tracing continues after GDB disconnects."), _("\ |
| 5359 | Use this to continue a tracing run even if GDB disconnects\n\ |
| 5360 | or detaches from the target. You can reconnect later and look at\n\ |
| 5361 | trace data collected in the meantime."), |
| 5362 | set_disconnected_tracing, |
| 5363 | NULL, |
| 5364 | &setlist, |
| 5365 | &showlist); |
| 5366 | |
| 5367 | add_setshow_boolean_cmd ("circular-trace-buffer", no_class, |
| 5368 | &circular_trace_buffer, _("\ |
| 5369 | Set target's use of circular trace buffer."), _("\ |
| 5370 | Show target's use of circular trace buffer."), _("\ |
| 5371 | Use this to make the trace buffer into a circular buffer,\n\ |
| 5372 | which will discard traceframes (oldest first) instead of filling\n\ |
| 5373 | up and stopping the trace run."), |
| 5374 | set_circular_trace_buffer, |
| 5375 | NULL, |
| 5376 | &setlist, |
| 5377 | &showlist); |
| 5378 | |
| 5379 | add_setshow_string_cmd ("trace-user", class_trace, |
| 5380 | &trace_user, _("\ |
| 5381 | Set the user name to use for current and future trace runs"), _("\ |
| 5382 | Show the user name to use for current and future trace runs"), NULL, |
| 5383 | set_trace_user, NULL, |
| 5384 | &setlist, &showlist); |
| 5385 | |
| 5386 | add_setshow_string_cmd ("trace-notes", class_trace, |
| 5387 | &trace_notes, _("\ |
| 5388 | Set notes string to use for current and future trace runs"), _("\ |
| 5389 | Show the notes string to use for current and future trace runs"), NULL, |
| 5390 | set_trace_notes, NULL, |
| 5391 | &setlist, &showlist); |
| 5392 | |
| 5393 | add_setshow_string_cmd ("trace-stop-notes", class_trace, |
| 5394 | &trace_stop_notes, _("\ |
| 5395 | Set notes string to use for future tstop commands"), _("\ |
| 5396 | Show the notes string to use for future tstop commands"), NULL, |
| 5397 | set_trace_stop_notes, NULL, |
| 5398 | &setlist, &showlist); |
| 5399 | |
| 5400 | init_tfile_ops (); |
| 5401 | |
| 5402 | add_target (&tfile_ops); |
| 5403 | } |