| 1 | /* Tracing functionality for remote targets in custom GDB protocol |
| 2 | |
| 3 | Copyright (C) 1997-2021 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 "target-dcache.h" |
| 30 | #include "language.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 "observable.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 "remote.h" |
| 48 | #include "source.h" |
| 49 | #include "ax.h" |
| 50 | #include "ax-gdb.h" |
| 51 | #include "memrange.h" |
| 52 | #include "cli/cli-utils.h" |
| 53 | #include "probe.h" |
| 54 | #include "gdbsupport/filestuff.h" |
| 55 | #include "gdbsupport/rsp-low.h" |
| 56 | #include "tracefile.h" |
| 57 | #include "location.h" |
| 58 | #include <algorithm> |
| 59 | #include "cli/cli-style.h" |
| 60 | #include "expop.h" |
| 61 | |
| 62 | #include <unistd.h> |
| 63 | |
| 64 | /* Maximum length of an agent aexpression. |
| 65 | This accounts for the fact that packets are limited to 400 bytes |
| 66 | (which includes everything -- including the checksum), and assumes |
| 67 | the worst case of maximum length for each of the pieces of a |
| 68 | continuation packet. |
| 69 | |
| 70 | NOTE: expressions get mem2hex'ed otherwise this would be twice as |
| 71 | large. (400 - 31)/2 == 184 */ |
| 72 | #define MAX_AGENT_EXPR_LEN 184 |
| 73 | |
| 74 | /* A hook used to notify the UI of tracepoint operations. */ |
| 75 | |
| 76 | void (*deprecated_trace_find_hook) (char *arg, int from_tty); |
| 77 | void (*deprecated_trace_start_stop_hook) (int start, int from_tty); |
| 78 | |
| 79 | /* |
| 80 | Tracepoint.c: |
| 81 | |
| 82 | This module defines the following debugger commands: |
| 83 | trace : set a tracepoint on a function, line, or address. |
| 84 | info trace : list all debugger-defined tracepoints. |
| 85 | delete trace : delete one or more tracepoints. |
| 86 | enable trace : enable one or more tracepoints. |
| 87 | disable trace : disable one or more tracepoints. |
| 88 | actions : specify actions to be taken at a tracepoint. |
| 89 | passcount : specify a pass count for a tracepoint. |
| 90 | tstart : start a trace experiment. |
| 91 | tstop : stop a trace experiment. |
| 92 | tstatus : query the status of a trace experiment. |
| 93 | tfind : find a trace frame in the trace buffer. |
| 94 | tdump : print everything collected at the current tracepoint. |
| 95 | save-tracepoints : write tracepoint setup into a file. |
| 96 | |
| 97 | This module defines the following user-visible debugger variables: |
| 98 | $trace_frame : sequence number of trace frame currently being debugged. |
| 99 | $trace_line : source line of trace frame currently being debugged. |
| 100 | $trace_file : source file of trace frame currently being debugged. |
| 101 | $tracepoint : tracepoint number of trace frame currently being debugged. |
| 102 | */ |
| 103 | |
| 104 | |
| 105 | /* ======= Important global variables: ======= */ |
| 106 | |
| 107 | /* The list of all trace state variables. We don't retain pointers to |
| 108 | any of these for any reason - API is by name or number only - so it |
| 109 | works to have a vector of objects. */ |
| 110 | |
| 111 | static std::vector<trace_state_variable> tvariables; |
| 112 | |
| 113 | /* The next integer to assign to a variable. */ |
| 114 | |
| 115 | static int next_tsv_number = 1; |
| 116 | |
| 117 | /* Number of last traceframe collected. */ |
| 118 | static int traceframe_number; |
| 119 | |
| 120 | /* Tracepoint for last traceframe collected. */ |
| 121 | static int tracepoint_number; |
| 122 | |
| 123 | /* The traceframe info of the current traceframe. NULL if we haven't |
| 124 | yet attempted to fetch it, or if the target does not support |
| 125 | fetching this object, or if we're not inspecting a traceframe |
| 126 | presently. */ |
| 127 | static traceframe_info_up current_traceframe_info; |
| 128 | |
| 129 | /* Tracing command lists. */ |
| 130 | static struct cmd_list_element *tfindlist; |
| 131 | |
| 132 | /* List of expressions to collect by default at each tracepoint hit. */ |
| 133 | char *default_collect; |
| 134 | |
| 135 | static bool disconnected_tracing; |
| 136 | |
| 137 | /* This variable controls whether we ask the target for a linear or |
| 138 | circular trace buffer. */ |
| 139 | |
| 140 | static bool circular_trace_buffer; |
| 141 | |
| 142 | /* This variable is the requested trace buffer size, or -1 to indicate |
| 143 | that we don't care and leave it up to the target to set a size. */ |
| 144 | |
| 145 | static int trace_buffer_size = -1; |
| 146 | |
| 147 | /* Textual notes applying to the current and/or future trace runs. */ |
| 148 | |
| 149 | static char *trace_user = NULL; |
| 150 | |
| 151 | /* Textual notes applying to the current and/or future trace runs. */ |
| 152 | |
| 153 | static char *trace_notes = NULL; |
| 154 | |
| 155 | /* Textual notes applying to the stopping of a trace. */ |
| 156 | |
| 157 | static char *trace_stop_notes = NULL; |
| 158 | |
| 159 | /* support routines */ |
| 160 | |
| 161 | struct collection_list; |
| 162 | static char *mem2hex (gdb_byte *, char *, int); |
| 163 | |
| 164 | static counted_command_line all_tracepoint_actions (struct breakpoint *); |
| 165 | |
| 166 | static struct trace_status trace_status; |
| 167 | |
| 168 | const char *stop_reason_names[] = { |
| 169 | "tunknown", |
| 170 | "tnotrun", |
| 171 | "tstop", |
| 172 | "tfull", |
| 173 | "tdisconnected", |
| 174 | "tpasscount", |
| 175 | "terror" |
| 176 | }; |
| 177 | |
| 178 | struct trace_status * |
| 179 | current_trace_status (void) |
| 180 | { |
| 181 | return &trace_status; |
| 182 | } |
| 183 | |
| 184 | /* Free and clear the traceframe info cache of the current |
| 185 | traceframe. */ |
| 186 | |
| 187 | static void |
| 188 | clear_traceframe_info (void) |
| 189 | { |
| 190 | current_traceframe_info = NULL; |
| 191 | } |
| 192 | |
| 193 | /* Set traceframe number to NUM. */ |
| 194 | static void |
| 195 | set_traceframe_num (int num) |
| 196 | { |
| 197 | traceframe_number = num; |
| 198 | set_internalvar_integer (lookup_internalvar ("trace_frame"), num); |
| 199 | } |
| 200 | |
| 201 | /* Set tracepoint number to NUM. */ |
| 202 | static void |
| 203 | set_tracepoint_num (int num) |
| 204 | { |
| 205 | tracepoint_number = num; |
| 206 | set_internalvar_integer (lookup_internalvar ("tracepoint"), num); |
| 207 | } |
| 208 | |
| 209 | /* Set externally visible debug variables for querying/printing |
| 210 | the traceframe context (line, function, file). */ |
| 211 | |
| 212 | static void |
| 213 | set_traceframe_context (struct frame_info *trace_frame) |
| 214 | { |
| 215 | CORE_ADDR trace_pc; |
| 216 | struct symbol *traceframe_fun; |
| 217 | symtab_and_line traceframe_sal; |
| 218 | |
| 219 | /* Save as globals for internal use. */ |
| 220 | if (trace_frame != NULL |
| 221 | && get_frame_pc_if_available (trace_frame, &trace_pc)) |
| 222 | { |
| 223 | traceframe_sal = find_pc_line (trace_pc, 0); |
| 224 | traceframe_fun = find_pc_function (trace_pc); |
| 225 | |
| 226 | /* Save linenumber as "$trace_line", a debugger variable visible to |
| 227 | users. */ |
| 228 | set_internalvar_integer (lookup_internalvar ("trace_line"), |
| 229 | traceframe_sal.line); |
| 230 | } |
| 231 | else |
| 232 | { |
| 233 | traceframe_fun = NULL; |
| 234 | set_internalvar_integer (lookup_internalvar ("trace_line"), -1); |
| 235 | } |
| 236 | |
| 237 | /* Save func name as "$trace_func", a debugger variable visible to |
| 238 | users. */ |
| 239 | if (traceframe_fun == NULL |
| 240 | || traceframe_fun->linkage_name () == NULL) |
| 241 | clear_internalvar (lookup_internalvar ("trace_func")); |
| 242 | else |
| 243 | set_internalvar_string (lookup_internalvar ("trace_func"), |
| 244 | traceframe_fun->linkage_name ()); |
| 245 | |
| 246 | /* Save file name as "$trace_file", a debugger variable visible to |
| 247 | users. */ |
| 248 | if (traceframe_sal.symtab == NULL) |
| 249 | clear_internalvar (lookup_internalvar ("trace_file")); |
| 250 | else |
| 251 | set_internalvar_string (lookup_internalvar ("trace_file"), |
| 252 | symtab_to_filename_for_display (traceframe_sal.symtab)); |
| 253 | } |
| 254 | |
| 255 | /* Create a new trace state variable with the given name. */ |
| 256 | |
| 257 | struct trace_state_variable * |
| 258 | create_trace_state_variable (const char *name) |
| 259 | { |
| 260 | tvariables.emplace_back (name, next_tsv_number++); |
| 261 | return &tvariables.back (); |
| 262 | } |
| 263 | |
| 264 | /* Look for a trace state variable of the given name. */ |
| 265 | |
| 266 | struct trace_state_variable * |
| 267 | find_trace_state_variable (const char *name) |
| 268 | { |
| 269 | for (trace_state_variable &tsv : tvariables) |
| 270 | if (tsv.name == name) |
| 271 | return &tsv; |
| 272 | |
| 273 | return NULL; |
| 274 | } |
| 275 | |
| 276 | /* Look for a trace state variable of the given number. Return NULL if |
| 277 | not found. */ |
| 278 | |
| 279 | struct trace_state_variable * |
| 280 | find_trace_state_variable_by_number (int number) |
| 281 | { |
| 282 | for (trace_state_variable &tsv : tvariables) |
| 283 | if (tsv.number == number) |
| 284 | return &tsv; |
| 285 | |
| 286 | return NULL; |
| 287 | } |
| 288 | |
| 289 | static void |
| 290 | delete_trace_state_variable (const char *name) |
| 291 | { |
| 292 | for (auto it = tvariables.begin (); it != tvariables.end (); it++) |
| 293 | if (it->name == name) |
| 294 | { |
| 295 | gdb::observers::tsv_deleted.notify (&*it); |
| 296 | tvariables.erase (it); |
| 297 | return; |
| 298 | } |
| 299 | |
| 300 | warning (_("No trace variable named \"$%s\", not deleting"), name); |
| 301 | } |
| 302 | |
| 303 | /* Throws an error if NAME is not valid syntax for a trace state |
| 304 | variable's name. */ |
| 305 | |
| 306 | void |
| 307 | validate_trace_state_variable_name (const char *name) |
| 308 | { |
| 309 | const char *p; |
| 310 | |
| 311 | if (*name == '\0') |
| 312 | error (_("Must supply a non-empty variable name")); |
| 313 | |
| 314 | /* All digits in the name is reserved for value history |
| 315 | references. */ |
| 316 | for (p = name; isdigit (*p); p++) |
| 317 | ; |
| 318 | if (*p == '\0') |
| 319 | error (_("$%s is not a valid trace state variable name"), name); |
| 320 | |
| 321 | for (p = name; isalnum (*p) || *p == '_'; p++) |
| 322 | ; |
| 323 | if (*p != '\0') |
| 324 | error (_("$%s is not a valid trace state variable name"), name); |
| 325 | } |
| 326 | |
| 327 | /* The 'tvariable' command collects a name and optional expression to |
| 328 | evaluate into an initial value. */ |
| 329 | |
| 330 | static void |
| 331 | trace_variable_command (const char *args, int from_tty) |
| 332 | { |
| 333 | LONGEST initval = 0; |
| 334 | struct trace_state_variable *tsv; |
| 335 | const char *name_start, *p; |
| 336 | |
| 337 | if (!args || !*args) |
| 338 | error_no_arg (_("Syntax is $NAME [ = EXPR ]")); |
| 339 | |
| 340 | /* Only allow two syntaxes; "$name" and "$name=value". */ |
| 341 | p = skip_spaces (args); |
| 342 | |
| 343 | if (*p++ != '$') |
| 344 | error (_("Name of trace variable should start with '$'")); |
| 345 | |
| 346 | name_start = p; |
| 347 | while (isalnum (*p) || *p == '_') |
| 348 | p++; |
| 349 | std::string name (name_start, p - name_start); |
| 350 | |
| 351 | p = skip_spaces (p); |
| 352 | if (*p != '=' && *p != '\0') |
| 353 | error (_("Syntax must be $NAME [ = EXPR ]")); |
| 354 | |
| 355 | validate_trace_state_variable_name (name.c_str ()); |
| 356 | |
| 357 | if (*p == '=') |
| 358 | initval = value_as_long (parse_and_eval (++p)); |
| 359 | |
| 360 | /* If the variable already exists, just change its initial value. */ |
| 361 | tsv = find_trace_state_variable (name.c_str ()); |
| 362 | if (tsv) |
| 363 | { |
| 364 | if (tsv->initial_value != initval) |
| 365 | { |
| 366 | tsv->initial_value = initval; |
| 367 | gdb::observers::tsv_modified.notify (tsv); |
| 368 | } |
| 369 | printf_filtered (_("Trace state variable $%s " |
| 370 | "now has initial value %s.\n"), |
| 371 | tsv->name.c_str (), plongest (tsv->initial_value)); |
| 372 | return; |
| 373 | } |
| 374 | |
| 375 | /* Create a new variable. */ |
| 376 | tsv = create_trace_state_variable (name.c_str ()); |
| 377 | tsv->initial_value = initval; |
| 378 | |
| 379 | gdb::observers::tsv_created.notify (tsv); |
| 380 | |
| 381 | printf_filtered (_("Trace state variable $%s " |
| 382 | "created, with initial value %s.\n"), |
| 383 | tsv->name.c_str (), plongest (tsv->initial_value)); |
| 384 | } |
| 385 | |
| 386 | static void |
| 387 | delete_trace_variable_command (const char *args, int from_tty) |
| 388 | { |
| 389 | if (args == NULL) |
| 390 | { |
| 391 | if (query (_("Delete all trace state variables? "))) |
| 392 | tvariables.clear (); |
| 393 | dont_repeat (); |
| 394 | gdb::observers::tsv_deleted.notify (NULL); |
| 395 | return; |
| 396 | } |
| 397 | |
| 398 | gdb_argv argv (args); |
| 399 | |
| 400 | for (char *arg : argv) |
| 401 | { |
| 402 | if (*arg == '$') |
| 403 | delete_trace_state_variable (arg + 1); |
| 404 | else |
| 405 | warning (_("Name \"%s\" not prefixed with '$', ignoring"), arg); |
| 406 | } |
| 407 | |
| 408 | dont_repeat (); |
| 409 | } |
| 410 | |
| 411 | void |
| 412 | tvariables_info_1 (void) |
| 413 | { |
| 414 | struct ui_out *uiout = current_uiout; |
| 415 | |
| 416 | /* Try to acquire values from the target. */ |
| 417 | for (trace_state_variable &tsv : tvariables) |
| 418 | tsv.value_known |
| 419 | = target_get_trace_state_variable_value (tsv.number, &tsv.value); |
| 420 | |
| 421 | { |
| 422 | ui_out_emit_table table_emitter (uiout, 3, tvariables.size (), |
| 423 | "trace-variables"); |
| 424 | uiout->table_header (15, ui_left, "name", "Name"); |
| 425 | uiout->table_header (11, ui_left, "initial", "Initial"); |
| 426 | uiout->table_header (11, ui_left, "current", "Current"); |
| 427 | |
| 428 | uiout->table_body (); |
| 429 | |
| 430 | for (const trace_state_variable &tsv : tvariables) |
| 431 | { |
| 432 | const char *c; |
| 433 | |
| 434 | ui_out_emit_tuple tuple_emitter (uiout, "variable"); |
| 435 | |
| 436 | uiout->field_string ("name", std::string ("$") + tsv.name); |
| 437 | uiout->field_string ("initial", plongest (tsv.initial_value)); |
| 438 | |
| 439 | ui_file_style style; |
| 440 | if (tsv.value_known) |
| 441 | c = plongest (tsv.value); |
| 442 | else if (uiout->is_mi_like_p ()) |
| 443 | /* For MI, we prefer not to use magic string constants, but rather |
| 444 | omit the field completely. The difference between unknown and |
| 445 | undefined does not seem important enough to represent. */ |
| 446 | c = NULL; |
| 447 | else if (current_trace_status ()->running || traceframe_number >= 0) |
| 448 | { |
| 449 | /* The value is/was defined, but we don't have it. */ |
| 450 | c = "<unknown>"; |
| 451 | style = metadata_style.style (); |
| 452 | } |
| 453 | else |
| 454 | { |
| 455 | /* It is not meaningful to ask about the value. */ |
| 456 | c = "<undefined>"; |
| 457 | style = metadata_style.style (); |
| 458 | } |
| 459 | if (c) |
| 460 | uiout->field_string ("current", c, style); |
| 461 | uiout->text ("\n"); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | if (tvariables.empty ()) |
| 466 | uiout->text (_("No trace state variables.\n")); |
| 467 | } |
| 468 | |
| 469 | /* List all the trace state variables. */ |
| 470 | |
| 471 | static void |
| 472 | info_tvariables_command (const char *args, int from_tty) |
| 473 | { |
| 474 | tvariables_info_1 (); |
| 475 | } |
| 476 | |
| 477 | /* Stash definitions of tsvs into the given file. */ |
| 478 | |
| 479 | void |
| 480 | save_trace_state_variables (struct ui_file *fp) |
| 481 | { |
| 482 | for (const trace_state_variable &tsv : tvariables) |
| 483 | { |
| 484 | fprintf_unfiltered (fp, "tvariable $%s", tsv.name.c_str ()); |
| 485 | if (tsv.initial_value) |
| 486 | fprintf_unfiltered (fp, " = %s", plongest (tsv.initial_value)); |
| 487 | fprintf_unfiltered (fp, "\n"); |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | /* ACTIONS functions: */ |
| 492 | |
| 493 | /* The three functions: |
| 494 | collect_pseudocommand, |
| 495 | while_stepping_pseudocommand, and |
| 496 | end_actions_pseudocommand |
| 497 | are placeholders for "commands" that are actually ONLY to be used |
| 498 | within a tracepoint action list. If the actual function is ever called, |
| 499 | it means that somebody issued the "command" at the top level, |
| 500 | which is always an error. */ |
| 501 | |
| 502 | static void |
| 503 | end_actions_pseudocommand (const char *args, int from_tty) |
| 504 | { |
| 505 | error (_("This command cannot be used at the top level.")); |
| 506 | } |
| 507 | |
| 508 | static void |
| 509 | while_stepping_pseudocommand (const char *args, int from_tty) |
| 510 | { |
| 511 | error (_("This command can only be used in a tracepoint actions list.")); |
| 512 | } |
| 513 | |
| 514 | static void |
| 515 | collect_pseudocommand (const char *args, int from_tty) |
| 516 | { |
| 517 | error (_("This command can only be used in a tracepoint actions list.")); |
| 518 | } |
| 519 | |
| 520 | static void |
| 521 | teval_pseudocommand (const char *args, int from_tty) |
| 522 | { |
| 523 | error (_("This command can only be used in a tracepoint actions list.")); |
| 524 | } |
| 525 | |
| 526 | /* Parse any collection options, such as /s for strings. */ |
| 527 | |
| 528 | const char * |
| 529 | decode_agent_options (const char *exp, int *trace_string) |
| 530 | { |
| 531 | struct value_print_options opts; |
| 532 | |
| 533 | *trace_string = 0; |
| 534 | |
| 535 | if (*exp != '/') |
| 536 | return exp; |
| 537 | |
| 538 | /* Call this to borrow the print elements default for collection |
| 539 | size. */ |
| 540 | get_user_print_options (&opts); |
| 541 | |
| 542 | exp++; |
| 543 | if (*exp == 's') |
| 544 | { |
| 545 | if (target_supports_string_tracing ()) |
| 546 | { |
| 547 | /* Allow an optional decimal number giving an explicit maximum |
| 548 | string length, defaulting it to the "print elements" value; |
| 549 | so "collect/s80 mystr" gets at most 80 bytes of string. */ |
| 550 | *trace_string = opts.print_max; |
| 551 | exp++; |
| 552 | if (*exp >= '0' && *exp <= '9') |
| 553 | *trace_string = atoi (exp); |
| 554 | while (*exp >= '0' && *exp <= '9') |
| 555 | exp++; |
| 556 | } |
| 557 | else |
| 558 | error (_("Target does not support \"/s\" option for string tracing.")); |
| 559 | } |
| 560 | else |
| 561 | error (_("Undefined collection format \"%c\"."), *exp); |
| 562 | |
| 563 | exp = skip_spaces (exp); |
| 564 | |
| 565 | return exp; |
| 566 | } |
| 567 | |
| 568 | /* Enter a list of actions for a tracepoint. */ |
| 569 | static void |
| 570 | actions_command (const char *args, int from_tty) |
| 571 | { |
| 572 | struct tracepoint *t; |
| 573 | |
| 574 | t = get_tracepoint_by_number (&args, NULL); |
| 575 | if (t) |
| 576 | { |
| 577 | std::string tmpbuf = |
| 578 | string_printf ("Enter actions for tracepoint %d, one per line.", |
| 579 | t->number); |
| 580 | |
| 581 | counted_command_line l = read_command_lines (tmpbuf.c_str (), |
| 582 | from_tty, 1, |
| 583 | [=] (const char *line) |
| 584 | { |
| 585 | validate_actionline (line, t); |
| 586 | }); |
| 587 | breakpoint_set_commands (t, std::move (l)); |
| 588 | } |
| 589 | /* else just return */ |
| 590 | } |
| 591 | |
| 592 | /* Report the results of checking the agent expression, as errors or |
| 593 | internal errors. */ |
| 594 | |
| 595 | static void |
| 596 | report_agent_reqs_errors (struct agent_expr *aexpr) |
| 597 | { |
| 598 | /* All of the "flaws" are serious bytecode generation issues that |
| 599 | should never occur. */ |
| 600 | if (aexpr->flaw != agent_flaw_none) |
| 601 | internal_error (__FILE__, __LINE__, _("expression is malformed")); |
| 602 | |
| 603 | /* If analysis shows a stack underflow, GDB must have done something |
| 604 | badly wrong in its bytecode generation. */ |
| 605 | if (aexpr->min_height < 0) |
| 606 | internal_error (__FILE__, __LINE__, |
| 607 | _("expression has min height < 0")); |
| 608 | |
| 609 | /* Issue this error if the stack is predicted to get too deep. The |
| 610 | limit is rather arbitrary; a better scheme might be for the |
| 611 | target to report how much stack it will have available. The |
| 612 | depth roughly corresponds to parenthesization, so a limit of 20 |
| 613 | amounts to 20 levels of expression nesting, which is actually |
| 614 | a pretty big hairy expression. */ |
| 615 | if (aexpr->max_height > 20) |
| 616 | error (_("Expression is too complicated.")); |
| 617 | } |
| 618 | |
| 619 | /* Call ax_reqs on AEXPR and raise an error if something is wrong. */ |
| 620 | |
| 621 | static void |
| 622 | finalize_tracepoint_aexpr (struct agent_expr *aexpr) |
| 623 | { |
| 624 | ax_reqs (aexpr); |
| 625 | |
| 626 | if (aexpr->len > MAX_AGENT_EXPR_LEN) |
| 627 | error (_("Expression is too complicated.")); |
| 628 | |
| 629 | report_agent_reqs_errors (aexpr); |
| 630 | } |
| 631 | |
| 632 | /* worker function */ |
| 633 | void |
| 634 | validate_actionline (const char *line, struct breakpoint *b) |
| 635 | { |
| 636 | struct cmd_list_element *c; |
| 637 | const char *tmp_p; |
| 638 | const char *p; |
| 639 | struct tracepoint *t = (struct tracepoint *) b; |
| 640 | |
| 641 | /* If EOF is typed, *line is NULL. */ |
| 642 | if (line == NULL) |
| 643 | return; |
| 644 | |
| 645 | p = skip_spaces (line); |
| 646 | |
| 647 | /* Symbol lookup etc. */ |
| 648 | if (*p == '\0') /* empty line: just prompt for another line. */ |
| 649 | return; |
| 650 | |
| 651 | if (*p == '#') /* comment line */ |
| 652 | return; |
| 653 | |
| 654 | c = lookup_cmd (&p, cmdlist, "", NULL, -1, 1); |
| 655 | if (c == 0) |
| 656 | error (_("`%s' is not a tracepoint action, or is ambiguous."), p); |
| 657 | |
| 658 | if (cmd_cfunc_eq (c, collect_pseudocommand)) |
| 659 | { |
| 660 | int trace_string = 0; |
| 661 | |
| 662 | if (*p == '/') |
| 663 | p = decode_agent_options (p, &trace_string); |
| 664 | |
| 665 | do |
| 666 | { /* Repeat over a comma-separated list. */ |
| 667 | QUIT; /* Allow user to bail out with ^C. */ |
| 668 | p = skip_spaces (p); |
| 669 | |
| 670 | if (*p == '$') /* Look for special pseudo-symbols. */ |
| 671 | { |
| 672 | if (0 == strncasecmp ("reg", p + 1, 3) |
| 673 | || 0 == strncasecmp ("arg", p + 1, 3) |
| 674 | || 0 == strncasecmp ("loc", p + 1, 3) |
| 675 | || 0 == strncasecmp ("_ret", p + 1, 4) |
| 676 | || 0 == strncasecmp ("_sdata", p + 1, 6)) |
| 677 | { |
| 678 | p = strchr (p, ','); |
| 679 | continue; |
| 680 | } |
| 681 | /* else fall thru, treat p as an expression and parse it! */ |
| 682 | } |
| 683 | tmp_p = p; |
| 684 | for (bp_location *loc : t->locations ()) |
| 685 | { |
| 686 | p = tmp_p; |
| 687 | expression_up exp = parse_exp_1 (&p, loc->address, |
| 688 | block_for_pc (loc->address), 1); |
| 689 | |
| 690 | if (exp->first_opcode () == OP_VAR_VALUE) |
| 691 | { |
| 692 | symbol *sym; |
| 693 | expr::var_value_operation *vvop |
| 694 | = (dynamic_cast<expr::var_value_operation *> |
| 695 | (exp->op.get ())); |
| 696 | sym = vvop->get_symbol (); |
| 697 | |
| 698 | if (SYMBOL_CLASS (sym) == LOC_CONST) |
| 699 | { |
| 700 | error (_("constant `%s' (value %s) " |
| 701 | "will not be collected."), |
| 702 | sym->print_name (), |
| 703 | plongest (SYMBOL_VALUE (sym))); |
| 704 | } |
| 705 | else if (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT) |
| 706 | { |
| 707 | error (_("`%s' is optimized away " |
| 708 | "and cannot be collected."), |
| 709 | sym->print_name ()); |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | /* We have something to collect, make sure that the expr to |
| 714 | bytecode translator can handle it and that it's not too |
| 715 | long. */ |
| 716 | agent_expr_up aexpr = gen_trace_for_expr (loc->address, |
| 717 | exp.get (), |
| 718 | trace_string); |
| 719 | |
| 720 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 721 | } |
| 722 | } |
| 723 | while (p && *p++ == ','); |
| 724 | } |
| 725 | |
| 726 | else if (cmd_cfunc_eq (c, teval_pseudocommand)) |
| 727 | { |
| 728 | do |
| 729 | { /* Repeat over a comma-separated list. */ |
| 730 | QUIT; /* Allow user to bail out with ^C. */ |
| 731 | p = skip_spaces (p); |
| 732 | |
| 733 | tmp_p = p; |
| 734 | for (bp_location *loc : t->locations ()) |
| 735 | { |
| 736 | p = tmp_p; |
| 737 | |
| 738 | /* Only expressions are allowed for this action. */ |
| 739 | expression_up exp = parse_exp_1 (&p, loc->address, |
| 740 | block_for_pc (loc->address), 1); |
| 741 | |
| 742 | /* We have something to evaluate, make sure that the expr to |
| 743 | bytecode translator can handle it and that it's not too |
| 744 | long. */ |
| 745 | agent_expr_up aexpr = gen_eval_for_expr (loc->address, exp.get ()); |
| 746 | |
| 747 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 748 | } |
| 749 | } |
| 750 | while (p && *p++ == ','); |
| 751 | } |
| 752 | |
| 753 | else if (cmd_cfunc_eq (c, while_stepping_pseudocommand)) |
| 754 | { |
| 755 | char *endp; |
| 756 | |
| 757 | p = skip_spaces (p); |
| 758 | t->step_count = strtol (p, &endp, 0); |
| 759 | if (endp == p || t->step_count == 0) |
| 760 | error (_("while-stepping step count `%s' is malformed."), line); |
| 761 | p = endp; |
| 762 | } |
| 763 | |
| 764 | else if (cmd_cfunc_eq (c, end_actions_pseudocommand)) |
| 765 | ; |
| 766 | |
| 767 | else |
| 768 | error (_("`%s' is not a supported tracepoint action."), line); |
| 769 | } |
| 770 | |
| 771 | enum { |
| 772 | memrange_absolute = -1 |
| 773 | }; |
| 774 | |
| 775 | /* MEMRANGE functions: */ |
| 776 | |
| 777 | /* Compare memranges for std::sort. */ |
| 778 | |
| 779 | static bool |
| 780 | memrange_comp (const memrange &a, const memrange &b) |
| 781 | { |
| 782 | if (a.type == b.type) |
| 783 | { |
| 784 | if (a.type == memrange_absolute) |
| 785 | return (bfd_vma) a.start < (bfd_vma) b.start; |
| 786 | else |
| 787 | return a.start < b.start; |
| 788 | } |
| 789 | |
| 790 | return a.type < b.type; |
| 791 | } |
| 792 | |
| 793 | /* Sort the memrange list using std::sort, and merge adjacent memranges. */ |
| 794 | |
| 795 | static void |
| 796 | memrange_sortmerge (std::vector<memrange> &memranges) |
| 797 | { |
| 798 | if (!memranges.empty ()) |
| 799 | { |
| 800 | int a, b; |
| 801 | |
| 802 | std::sort (memranges.begin (), memranges.end (), memrange_comp); |
| 803 | |
| 804 | for (a = 0, b = 1; b < memranges.size (); b++) |
| 805 | { |
| 806 | /* If memrange b overlaps or is adjacent to memrange a, |
| 807 | merge them. */ |
| 808 | if (memranges[a].type == memranges[b].type |
| 809 | && memranges[b].start <= memranges[a].end) |
| 810 | { |
| 811 | if (memranges[b].end > memranges[a].end) |
| 812 | memranges[a].end = memranges[b].end; |
| 813 | continue; /* next b, same a */ |
| 814 | } |
| 815 | a++; /* next a */ |
| 816 | if (a != b) |
| 817 | memranges[a] = memranges[b]; |
| 818 | } |
| 819 | memranges.resize (a + 1); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | /* Add remote register number REGNO to the collection list mask. */ |
| 824 | |
| 825 | void |
| 826 | collection_list::add_remote_register (unsigned int regno) |
| 827 | { |
| 828 | if (info_verbose) |
| 829 | printf_filtered ("collect register %d\n", regno); |
| 830 | |
| 831 | m_regs_mask.at (regno / 8) |= 1 << (regno % 8); |
| 832 | } |
| 833 | |
| 834 | /* Add all the registers from the mask in AEXPR to the mask in the |
| 835 | collection list. Registers in the AEXPR mask are already remote |
| 836 | register numbers. */ |
| 837 | |
| 838 | void |
| 839 | collection_list::add_ax_registers (struct agent_expr *aexpr) |
| 840 | { |
| 841 | if (aexpr->reg_mask_len > 0) |
| 842 | { |
| 843 | for (int ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++) |
| 844 | { |
| 845 | QUIT; /* Allow user to bail out with ^C. */ |
| 846 | if (aexpr->reg_mask[ndx1] != 0) |
| 847 | { |
| 848 | /* Assume chars have 8 bits. */ |
| 849 | for (int ndx2 = 0; ndx2 < 8; ndx2++) |
| 850 | if (aexpr->reg_mask[ndx1] & (1 << ndx2)) |
| 851 | /* It's used -- record it. */ |
| 852 | add_remote_register (ndx1 * 8 + ndx2); |
| 853 | } |
| 854 | } |
| 855 | } |
| 856 | } |
| 857 | |
| 858 | /* If REGNO is raw, add its corresponding remote register number to |
| 859 | the mask. If REGNO is a pseudo-register, figure out the necessary |
| 860 | registers using a temporary agent expression, and add it to the |
| 861 | list if it needs more than just a mask. */ |
| 862 | |
| 863 | void |
| 864 | collection_list::add_local_register (struct gdbarch *gdbarch, |
| 865 | unsigned int regno, |
| 866 | CORE_ADDR scope) |
| 867 | { |
| 868 | if (regno < gdbarch_num_regs (gdbarch)) |
| 869 | { |
| 870 | int remote_regno = gdbarch_remote_register_number (gdbarch, regno); |
| 871 | |
| 872 | if (remote_regno < 0) |
| 873 | error (_("Can't collect register %d"), regno); |
| 874 | |
| 875 | add_remote_register (remote_regno); |
| 876 | } |
| 877 | else |
| 878 | { |
| 879 | agent_expr_up aexpr (new agent_expr (gdbarch, scope)); |
| 880 | |
| 881 | ax_reg_mask (aexpr.get (), regno); |
| 882 | |
| 883 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 884 | |
| 885 | add_ax_registers (aexpr.get ()); |
| 886 | |
| 887 | /* Usually ax_reg_mask for a pseudo-regiser only sets the |
| 888 | corresponding raw registers in the ax mask, but if this isn't |
| 889 | the case add the expression that is generated to the |
| 890 | collection list. */ |
| 891 | if (aexpr->len > 0) |
| 892 | add_aexpr (std::move (aexpr)); |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | /* Add a memrange to a collection list. */ |
| 897 | |
| 898 | void |
| 899 | collection_list::add_memrange (struct gdbarch *gdbarch, |
| 900 | int type, bfd_signed_vma base, |
| 901 | unsigned long len, CORE_ADDR scope) |
| 902 | { |
| 903 | if (info_verbose) |
| 904 | printf_filtered ("(%d,%s,%ld)\n", type, paddress (gdbarch, base), len); |
| 905 | |
| 906 | /* type: memrange_absolute == memory, other n == basereg */ |
| 907 | /* base: addr if memory, offset if reg relative. */ |
| 908 | /* len: we actually save end (base + len) for convenience */ |
| 909 | m_memranges.emplace_back (type, base, base + len); |
| 910 | |
| 911 | if (type != memrange_absolute) /* Better collect the base register! */ |
| 912 | add_local_register (gdbarch, type, scope); |
| 913 | } |
| 914 | |
| 915 | /* Add a symbol to a collection list. */ |
| 916 | |
| 917 | void |
| 918 | collection_list::collect_symbol (struct symbol *sym, |
| 919 | struct gdbarch *gdbarch, |
| 920 | long frame_regno, long frame_offset, |
| 921 | CORE_ADDR scope, |
| 922 | int trace_string) |
| 923 | { |
| 924 | unsigned long len; |
| 925 | unsigned int reg; |
| 926 | bfd_signed_vma offset; |
| 927 | int treat_as_expr = 0; |
| 928 | |
| 929 | len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))); |
| 930 | switch (SYMBOL_CLASS (sym)) |
| 931 | { |
| 932 | default: |
| 933 | printf_filtered ("%s: don't know symbol class %d\n", |
| 934 | sym->print_name (), SYMBOL_CLASS (sym)); |
| 935 | break; |
| 936 | case LOC_CONST: |
| 937 | printf_filtered ("constant %s (value %s) will not be collected.\n", |
| 938 | sym->print_name (), plongest (SYMBOL_VALUE (sym))); |
| 939 | break; |
| 940 | case LOC_STATIC: |
| 941 | offset = SYMBOL_VALUE_ADDRESS (sym); |
| 942 | if (info_verbose) |
| 943 | { |
| 944 | printf_filtered ("LOC_STATIC %s: collect %ld bytes at %s.\n", |
| 945 | sym->print_name (), len, |
| 946 | paddress (gdbarch, offset)); |
| 947 | } |
| 948 | /* A struct may be a C++ class with static fields, go to general |
| 949 | expression handling. */ |
| 950 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_STRUCT) |
| 951 | treat_as_expr = 1; |
| 952 | else |
| 953 | add_memrange (gdbarch, memrange_absolute, offset, len, scope); |
| 954 | break; |
| 955 | case LOC_REGISTER: |
| 956 | reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch); |
| 957 | if (info_verbose) |
| 958 | printf_filtered ("LOC_REG[parm] %s: ", sym->print_name ()); |
| 959 | add_local_register (gdbarch, reg, scope); |
| 960 | /* Check for doubles stored in two registers. */ |
| 961 | /* FIXME: how about larger types stored in 3 or more regs? */ |
| 962 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_FLT && |
| 963 | len > register_size (gdbarch, reg)) |
| 964 | add_local_register (gdbarch, reg + 1, scope); |
| 965 | break; |
| 966 | case LOC_REF_ARG: |
| 967 | printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n"); |
| 968 | printf_filtered (" (will not collect %s)\n", sym->print_name ()); |
| 969 | break; |
| 970 | case LOC_ARG: |
| 971 | reg = frame_regno; |
| 972 | offset = frame_offset + SYMBOL_VALUE (sym); |
| 973 | if (info_verbose) |
| 974 | { |
| 975 | printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset %s" |
| 976 | " from frame ptr reg %d\n", sym->print_name (), len, |
| 977 | paddress (gdbarch, offset), reg); |
| 978 | } |
| 979 | add_memrange (gdbarch, reg, offset, len, scope); |
| 980 | break; |
| 981 | case LOC_REGPARM_ADDR: |
| 982 | reg = SYMBOL_VALUE (sym); |
| 983 | offset = 0; |
| 984 | if (info_verbose) |
| 985 | { |
| 986 | printf_filtered ("LOC_REGPARM_ADDR %s: Collect %ld bytes at offset %s" |
| 987 | " from reg %d\n", sym->print_name (), len, |
| 988 | paddress (gdbarch, offset), reg); |
| 989 | } |
| 990 | add_memrange (gdbarch, reg, offset, len, scope); |
| 991 | break; |
| 992 | case LOC_LOCAL: |
| 993 | reg = frame_regno; |
| 994 | offset = frame_offset + SYMBOL_VALUE (sym); |
| 995 | if (info_verbose) |
| 996 | { |
| 997 | printf_filtered ("LOC_LOCAL %s: Collect %ld bytes at offset %s" |
| 998 | " from frame ptr reg %d\n", sym->print_name (), len, |
| 999 | paddress (gdbarch, offset), reg); |
| 1000 | } |
| 1001 | add_memrange (gdbarch, reg, offset, len, scope); |
| 1002 | break; |
| 1003 | |
| 1004 | case LOC_UNRESOLVED: |
| 1005 | treat_as_expr = 1; |
| 1006 | break; |
| 1007 | |
| 1008 | case LOC_OPTIMIZED_OUT: |
| 1009 | printf_filtered ("%s has been optimized out of existence.\n", |
| 1010 | sym->print_name ()); |
| 1011 | break; |
| 1012 | |
| 1013 | case LOC_COMPUTED: |
| 1014 | treat_as_expr = 1; |
| 1015 | break; |
| 1016 | } |
| 1017 | |
| 1018 | /* Expressions are the most general case. */ |
| 1019 | if (treat_as_expr) |
| 1020 | { |
| 1021 | agent_expr_up aexpr = gen_trace_for_var (scope, gdbarch, |
| 1022 | sym, trace_string); |
| 1023 | |
| 1024 | /* It can happen that the symbol is recorded as a computed |
| 1025 | location, but it's been optimized away and doesn't actually |
| 1026 | have a location expression. */ |
| 1027 | if (!aexpr) |
| 1028 | { |
| 1029 | printf_filtered ("%s has been optimized out of existence.\n", |
| 1030 | sym->print_name ()); |
| 1031 | return; |
| 1032 | } |
| 1033 | |
| 1034 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 1035 | |
| 1036 | /* Take care of the registers. */ |
| 1037 | add_ax_registers (aexpr.get ()); |
| 1038 | |
| 1039 | add_aexpr (std::move (aexpr)); |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | /* Data to be passed around in the calls to the locals and args |
| 1044 | iterators. */ |
| 1045 | |
| 1046 | struct add_local_symbols_data |
| 1047 | { |
| 1048 | struct collection_list *collect; |
| 1049 | struct gdbarch *gdbarch; |
| 1050 | CORE_ADDR pc; |
| 1051 | long frame_regno; |
| 1052 | long frame_offset; |
| 1053 | int count; |
| 1054 | int trace_string; |
| 1055 | }; |
| 1056 | |
| 1057 | /* The callback for the locals and args iterators. */ |
| 1058 | |
| 1059 | static void |
| 1060 | do_collect_symbol (const char *print_name, |
| 1061 | struct symbol *sym, |
| 1062 | void *cb_data) |
| 1063 | { |
| 1064 | struct add_local_symbols_data *p = (struct add_local_symbols_data *) cb_data; |
| 1065 | |
| 1066 | p->collect->collect_symbol (sym, p->gdbarch, p->frame_regno, |
| 1067 | p->frame_offset, p->pc, p->trace_string); |
| 1068 | p->count++; |
| 1069 | |
| 1070 | p->collect->add_wholly_collected (print_name); |
| 1071 | } |
| 1072 | |
| 1073 | void |
| 1074 | collection_list::add_wholly_collected (const char *print_name) |
| 1075 | { |
| 1076 | m_wholly_collected.push_back (print_name); |
| 1077 | } |
| 1078 | |
| 1079 | /* Add all locals (or args) symbols to collection list. */ |
| 1080 | |
| 1081 | void |
| 1082 | collection_list::add_local_symbols (struct gdbarch *gdbarch, CORE_ADDR pc, |
| 1083 | long frame_regno, long frame_offset, int type, |
| 1084 | int trace_string) |
| 1085 | { |
| 1086 | const struct block *block; |
| 1087 | struct add_local_symbols_data cb_data; |
| 1088 | |
| 1089 | cb_data.collect = this; |
| 1090 | cb_data.gdbarch = gdbarch; |
| 1091 | cb_data.pc = pc; |
| 1092 | cb_data.frame_regno = frame_regno; |
| 1093 | cb_data.frame_offset = frame_offset; |
| 1094 | cb_data.count = 0; |
| 1095 | cb_data.trace_string = trace_string; |
| 1096 | |
| 1097 | if (type == 'L') |
| 1098 | { |
| 1099 | block = block_for_pc (pc); |
| 1100 | if (block == NULL) |
| 1101 | { |
| 1102 | warning (_("Can't collect locals; " |
| 1103 | "no symbol table info available.\n")); |
| 1104 | return; |
| 1105 | } |
| 1106 | |
| 1107 | iterate_over_block_local_vars (block, do_collect_symbol, &cb_data); |
| 1108 | if (cb_data.count == 0) |
| 1109 | warning (_("No locals found in scope.")); |
| 1110 | } |
| 1111 | else |
| 1112 | { |
| 1113 | pc = get_pc_function_start (pc); |
| 1114 | block = block_for_pc (pc); |
| 1115 | if (block == NULL) |
| 1116 | { |
| 1117 | warning (_("Can't collect args; no symbol table info available.")); |
| 1118 | return; |
| 1119 | } |
| 1120 | |
| 1121 | iterate_over_block_arg_vars (block, do_collect_symbol, &cb_data); |
| 1122 | if (cb_data.count == 0) |
| 1123 | warning (_("No args found in scope.")); |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | void |
| 1128 | collection_list::add_static_trace_data () |
| 1129 | { |
| 1130 | if (info_verbose) |
| 1131 | printf_filtered ("collect static trace data\n"); |
| 1132 | m_strace_data = true; |
| 1133 | } |
| 1134 | |
| 1135 | collection_list::collection_list () |
| 1136 | : m_strace_data (false) |
| 1137 | { |
| 1138 | int max_remote_regno = 0; |
| 1139 | for (int i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
| 1140 | { |
| 1141 | int remote_regno = (gdbarch_remote_register_number |
| 1142 | (target_gdbarch (), i)); |
| 1143 | |
| 1144 | if (remote_regno >= 0 && remote_regno > max_remote_regno) |
| 1145 | max_remote_regno = remote_regno; |
| 1146 | } |
| 1147 | |
| 1148 | m_regs_mask.resize ((max_remote_regno / 8) + 1); |
| 1149 | |
| 1150 | m_memranges.reserve (128); |
| 1151 | m_aexprs.reserve (128); |
| 1152 | } |
| 1153 | |
| 1154 | /* Reduce a collection list to string form (for gdb protocol). */ |
| 1155 | |
| 1156 | std::vector<std::string> |
| 1157 | collection_list::stringify () |
| 1158 | { |
| 1159 | gdb::char_vector temp_buf (2048); |
| 1160 | |
| 1161 | int count; |
| 1162 | char *end; |
| 1163 | long i; |
| 1164 | std::vector<std::string> str_list; |
| 1165 | |
| 1166 | if (m_strace_data) |
| 1167 | { |
| 1168 | if (info_verbose) |
| 1169 | printf_filtered ("\nCollecting static trace data\n"); |
| 1170 | end = temp_buf.data (); |
| 1171 | *end++ = 'L'; |
| 1172 | str_list.emplace_back (temp_buf.data (), end - temp_buf.data ()); |
| 1173 | } |
| 1174 | |
| 1175 | for (i = m_regs_mask.size () - 1; i > 0; i--) |
| 1176 | if (m_regs_mask[i] != 0) /* Skip leading zeroes in regs_mask. */ |
| 1177 | break; |
| 1178 | if (m_regs_mask[i] != 0) /* Prepare to send regs_mask to the stub. */ |
| 1179 | { |
| 1180 | if (info_verbose) |
| 1181 | printf_filtered ("\nCollecting registers (mask): 0x"); |
| 1182 | |
| 1183 | /* One char for 'R', one for the null terminator and two per |
| 1184 | mask byte. */ |
| 1185 | std::size_t new_size = (i + 1) * 2 + 2; |
| 1186 | if (new_size > temp_buf.size ()) |
| 1187 | temp_buf.resize (new_size); |
| 1188 | |
| 1189 | end = temp_buf.data (); |
| 1190 | *end++ = 'R'; |
| 1191 | for (; i >= 0; i--) |
| 1192 | { |
| 1193 | QUIT; /* Allow user to bail out with ^C. */ |
| 1194 | if (info_verbose) |
| 1195 | printf_filtered ("%02X", m_regs_mask[i]); |
| 1196 | |
| 1197 | end = pack_hex_byte (end, m_regs_mask[i]); |
| 1198 | } |
| 1199 | *end = '\0'; |
| 1200 | |
| 1201 | str_list.emplace_back (temp_buf.data ()); |
| 1202 | } |
| 1203 | if (info_verbose) |
| 1204 | printf_filtered ("\n"); |
| 1205 | if (!m_memranges.empty () && info_verbose) |
| 1206 | printf_filtered ("Collecting memranges: \n"); |
| 1207 | for (i = 0, count = 0, end = temp_buf.data (); |
| 1208 | i < m_memranges.size (); i++) |
| 1209 | { |
| 1210 | QUIT; /* Allow user to bail out with ^C. */ |
| 1211 | if (info_verbose) |
| 1212 | { |
| 1213 | printf_filtered ("(%d, %s, %ld)\n", |
| 1214 | m_memranges[i].type, |
| 1215 | paddress (target_gdbarch (), |
| 1216 | m_memranges[i].start), |
| 1217 | (long) (m_memranges[i].end |
| 1218 | - m_memranges[i].start)); |
| 1219 | } |
| 1220 | if (count + 27 > MAX_AGENT_EXPR_LEN) |
| 1221 | { |
| 1222 | str_list.emplace_back (temp_buf.data (), count); |
| 1223 | count = 0; |
| 1224 | end = temp_buf.data (); |
| 1225 | } |
| 1226 | |
| 1227 | { |
| 1228 | bfd_signed_vma length |
| 1229 | = m_memranges[i].end - m_memranges[i].start; |
| 1230 | |
| 1231 | /* The "%X" conversion specifier expects an unsigned argument, |
| 1232 | so passing -1 (memrange_absolute) to it directly gives you |
| 1233 | "FFFFFFFF" (or more, depending on sizeof (unsigned)). |
| 1234 | Special-case it. */ |
| 1235 | if (m_memranges[i].type == memrange_absolute) |
| 1236 | sprintf (end, "M-1,%s,%lX", phex_nz (m_memranges[i].start, 0), |
| 1237 | (long) length); |
| 1238 | else |
| 1239 | sprintf (end, "M%X,%s,%lX", m_memranges[i].type, |
| 1240 | phex_nz (m_memranges[i].start, 0), (long) length); |
| 1241 | } |
| 1242 | |
| 1243 | count += strlen (end); |
| 1244 | end = temp_buf.data () + count; |
| 1245 | } |
| 1246 | |
| 1247 | for (i = 0; i < m_aexprs.size (); i++) |
| 1248 | { |
| 1249 | QUIT; /* Allow user to bail out with ^C. */ |
| 1250 | if ((count + 10 + 2 * m_aexprs[i]->len) > MAX_AGENT_EXPR_LEN) |
| 1251 | { |
| 1252 | str_list.emplace_back (temp_buf.data (), count); |
| 1253 | count = 0; |
| 1254 | end = temp_buf.data (); |
| 1255 | } |
| 1256 | sprintf (end, "X%08X,", m_aexprs[i]->len); |
| 1257 | end += 10; /* 'X' + 8 hex digits + ',' */ |
| 1258 | count += 10; |
| 1259 | |
| 1260 | end = mem2hex (m_aexprs[i]->buf, end, m_aexprs[i]->len); |
| 1261 | count += 2 * m_aexprs[i]->len; |
| 1262 | } |
| 1263 | |
| 1264 | if (count != 0) |
| 1265 | { |
| 1266 | str_list.emplace_back (temp_buf.data (), count); |
| 1267 | count = 0; |
| 1268 | end = temp_buf.data (); |
| 1269 | } |
| 1270 | |
| 1271 | return str_list; |
| 1272 | } |
| 1273 | |
| 1274 | /* Add the expression STR to M_COMPUTED. */ |
| 1275 | |
| 1276 | void |
| 1277 | collection_list::append_exp (std::string &&str) |
| 1278 | { |
| 1279 | m_computed.push_back (std::move (str)); |
| 1280 | } |
| 1281 | |
| 1282 | void |
| 1283 | collection_list::finish () |
| 1284 | { |
| 1285 | memrange_sortmerge (m_memranges); |
| 1286 | } |
| 1287 | |
| 1288 | static void |
| 1289 | encode_actions_1 (struct command_line *action, |
| 1290 | struct bp_location *tloc, |
| 1291 | int frame_reg, |
| 1292 | LONGEST frame_offset, |
| 1293 | struct collection_list *collect, |
| 1294 | struct collection_list *stepping_list) |
| 1295 | { |
| 1296 | const char *action_exp; |
| 1297 | int i; |
| 1298 | struct value *tempval; |
| 1299 | struct cmd_list_element *cmd; |
| 1300 | |
| 1301 | for (; action; action = action->next) |
| 1302 | { |
| 1303 | QUIT; /* Allow user to bail out with ^C. */ |
| 1304 | action_exp = action->line; |
| 1305 | action_exp = skip_spaces (action_exp); |
| 1306 | |
| 1307 | cmd = lookup_cmd (&action_exp, cmdlist, "", NULL, -1, 1); |
| 1308 | if (cmd == 0) |
| 1309 | error (_("Bad action list item: %s"), action_exp); |
| 1310 | |
| 1311 | if (cmd_cfunc_eq (cmd, collect_pseudocommand)) |
| 1312 | { |
| 1313 | int trace_string = 0; |
| 1314 | |
| 1315 | if (*action_exp == '/') |
| 1316 | action_exp = decode_agent_options (action_exp, &trace_string); |
| 1317 | |
| 1318 | do |
| 1319 | { /* Repeat over a comma-separated list. */ |
| 1320 | QUIT; /* Allow user to bail out with ^C. */ |
| 1321 | action_exp = skip_spaces (action_exp); |
| 1322 | |
| 1323 | if (0 == strncasecmp ("$reg", action_exp, 4)) |
| 1324 | { |
| 1325 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); |
| 1326 | i++) |
| 1327 | { |
| 1328 | int remote_regno = (gdbarch_remote_register_number |
| 1329 | (target_gdbarch (), i)); |
| 1330 | |
| 1331 | /* Ignore arch regnos without a corresponding |
| 1332 | remote regno. This can happen for regnos not |
| 1333 | in the tdesc. */ |
| 1334 | if (remote_regno >= 0) |
| 1335 | collect->add_remote_register (remote_regno); |
| 1336 | } |
| 1337 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1338 | } |
| 1339 | else if (0 == strncasecmp ("$arg", action_exp, 4)) |
| 1340 | { |
| 1341 | collect->add_local_symbols (target_gdbarch (), |
| 1342 | tloc->address, |
| 1343 | frame_reg, |
| 1344 | frame_offset, |
| 1345 | 'A', |
| 1346 | trace_string); |
| 1347 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1348 | } |
| 1349 | else if (0 == strncasecmp ("$loc", action_exp, 4)) |
| 1350 | { |
| 1351 | collect->add_local_symbols (target_gdbarch (), |
| 1352 | tloc->address, |
| 1353 | frame_reg, |
| 1354 | frame_offset, |
| 1355 | 'L', |
| 1356 | trace_string); |
| 1357 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1358 | } |
| 1359 | else if (0 == strncasecmp ("$_ret", action_exp, 5)) |
| 1360 | { |
| 1361 | agent_expr_up aexpr |
| 1362 | = gen_trace_for_return_address (tloc->address, |
| 1363 | target_gdbarch (), |
| 1364 | trace_string); |
| 1365 | |
| 1366 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 1367 | |
| 1368 | /* take care of the registers */ |
| 1369 | collect->add_ax_registers (aexpr.get ()); |
| 1370 | |
| 1371 | collect->add_aexpr (std::move (aexpr)); |
| 1372 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1373 | } |
| 1374 | else if (0 == strncasecmp ("$_sdata", action_exp, 7)) |
| 1375 | { |
| 1376 | collect->add_static_trace_data (); |
| 1377 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1378 | } |
| 1379 | else |
| 1380 | { |
| 1381 | unsigned long addr; |
| 1382 | |
| 1383 | const char *exp_start = action_exp; |
| 1384 | expression_up exp = parse_exp_1 (&action_exp, tloc->address, |
| 1385 | block_for_pc (tloc->address), |
| 1386 | 1); |
| 1387 | |
| 1388 | switch (exp->first_opcode ()) |
| 1389 | { |
| 1390 | case OP_REGISTER: |
| 1391 | { |
| 1392 | expr::register_operation *regop |
| 1393 | = (dynamic_cast<expr::register_operation *> |
| 1394 | (exp->op.get ())); |
| 1395 | const char *name = regop->get_name (); |
| 1396 | |
| 1397 | i = user_reg_map_name_to_regnum (target_gdbarch (), |
| 1398 | name, strlen (name)); |
| 1399 | if (i == -1) |
| 1400 | internal_error (__FILE__, __LINE__, |
| 1401 | _("Register $%s not available"), |
| 1402 | name); |
| 1403 | if (info_verbose) |
| 1404 | printf_filtered ("OP_REGISTER: "); |
| 1405 | collect->add_local_register (target_gdbarch (), |
| 1406 | i, tloc->address); |
| 1407 | break; |
| 1408 | } |
| 1409 | |
| 1410 | case UNOP_MEMVAL: |
| 1411 | { |
| 1412 | /* Safe because we know it's a simple expression. */ |
| 1413 | tempval = evaluate_expression (exp.get ()); |
| 1414 | addr = value_address (tempval); |
| 1415 | expr::unop_memval_operation *memop |
| 1416 | = (dynamic_cast<expr::unop_memval_operation *> |
| 1417 | (exp->op.get ())); |
| 1418 | struct type *type = memop->get_type (); |
| 1419 | /* Initialize the TYPE_LENGTH if it is a typedef. */ |
| 1420 | check_typedef (type); |
| 1421 | collect->add_memrange (target_gdbarch (), |
| 1422 | memrange_absolute, addr, |
| 1423 | TYPE_LENGTH (type), |
| 1424 | tloc->address); |
| 1425 | collect->append_exp (std::string (exp_start, |
| 1426 | action_exp)); |
| 1427 | } |
| 1428 | break; |
| 1429 | |
| 1430 | case OP_VAR_VALUE: |
| 1431 | { |
| 1432 | expr::var_value_operation *vvo |
| 1433 | = (dynamic_cast<expr::var_value_operation *> |
| 1434 | (exp->op.get ())); |
| 1435 | struct symbol *sym = vvo->get_symbol (); |
| 1436 | const char *name = sym->natural_name (); |
| 1437 | |
| 1438 | collect->collect_symbol (sym, |
| 1439 | target_gdbarch (), |
| 1440 | frame_reg, |
| 1441 | frame_offset, |
| 1442 | tloc->address, |
| 1443 | trace_string); |
| 1444 | collect->add_wholly_collected (name); |
| 1445 | } |
| 1446 | break; |
| 1447 | |
| 1448 | default: /* Full-fledged expression. */ |
| 1449 | agent_expr_up aexpr = gen_trace_for_expr (tloc->address, |
| 1450 | exp.get (), |
| 1451 | trace_string); |
| 1452 | |
| 1453 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 1454 | |
| 1455 | /* Take care of the registers. */ |
| 1456 | collect->add_ax_registers (aexpr.get ()); |
| 1457 | |
| 1458 | collect->add_aexpr (std::move (aexpr)); |
| 1459 | collect->append_exp (std::string (exp_start, |
| 1460 | action_exp)); |
| 1461 | break; |
| 1462 | } /* switch */ |
| 1463 | } /* do */ |
| 1464 | } |
| 1465 | while (action_exp && *action_exp++ == ','); |
| 1466 | } /* if */ |
| 1467 | else if (cmd_cfunc_eq (cmd, teval_pseudocommand)) |
| 1468 | { |
| 1469 | do |
| 1470 | { /* Repeat over a comma-separated list. */ |
| 1471 | QUIT; /* Allow user to bail out with ^C. */ |
| 1472 | action_exp = skip_spaces (action_exp); |
| 1473 | |
| 1474 | { |
| 1475 | expression_up exp = parse_exp_1 (&action_exp, tloc->address, |
| 1476 | block_for_pc (tloc->address), |
| 1477 | 1); |
| 1478 | |
| 1479 | agent_expr_up aexpr = gen_eval_for_expr (tloc->address, |
| 1480 | exp.get ()); |
| 1481 | |
| 1482 | finalize_tracepoint_aexpr (aexpr.get ()); |
| 1483 | |
| 1484 | /* Even though we're not officially collecting, add |
| 1485 | to the collect list anyway. */ |
| 1486 | collect->add_aexpr (std::move (aexpr)); |
| 1487 | } /* do */ |
| 1488 | } |
| 1489 | while (action_exp && *action_exp++ == ','); |
| 1490 | } /* if */ |
| 1491 | else if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) |
| 1492 | { |
| 1493 | /* We check against nested while-stepping when setting |
| 1494 | breakpoint action, so no way to run into nested |
| 1495 | here. */ |
| 1496 | gdb_assert (stepping_list); |
| 1497 | |
| 1498 | encode_actions_1 (action->body_list_0.get (), tloc, frame_reg, |
| 1499 | frame_offset, stepping_list, NULL); |
| 1500 | } |
| 1501 | else |
| 1502 | error (_("Invalid tracepoint command '%s'"), action->line); |
| 1503 | } /* for */ |
| 1504 | } |
| 1505 | |
| 1506 | /* Encode actions of tracepoint TLOC->owner and fill TRACEPOINT_LIST |
| 1507 | and STEPPING_LIST. */ |
| 1508 | |
| 1509 | void |
| 1510 | encode_actions (struct bp_location *tloc, |
| 1511 | struct collection_list *tracepoint_list, |
| 1512 | struct collection_list *stepping_list) |
| 1513 | { |
| 1514 | int frame_reg; |
| 1515 | LONGEST frame_offset; |
| 1516 | |
| 1517 | gdbarch_virtual_frame_pointer (tloc->gdbarch, |
| 1518 | tloc->address, &frame_reg, &frame_offset); |
| 1519 | |
| 1520 | counted_command_line actions = all_tracepoint_actions (tloc->owner); |
| 1521 | encode_actions_1 (actions.get (), tloc, frame_reg, frame_offset, |
| 1522 | tracepoint_list, stepping_list); |
| 1523 | encode_actions_1 (breakpoint_commands (tloc->owner), tloc, |
| 1524 | frame_reg, frame_offset, tracepoint_list, stepping_list); |
| 1525 | |
| 1526 | tracepoint_list->finish (); |
| 1527 | stepping_list->finish (); |
| 1528 | } |
| 1529 | |
| 1530 | /* Render all actions into gdb protocol. */ |
| 1531 | |
| 1532 | void |
| 1533 | encode_actions_rsp (struct bp_location *tloc, |
| 1534 | std::vector<std::string> *tdp_actions, |
| 1535 | std::vector<std::string> *stepping_actions) |
| 1536 | { |
| 1537 | struct collection_list tracepoint_list, stepping_list; |
| 1538 | |
| 1539 | encode_actions (tloc, &tracepoint_list, &stepping_list); |
| 1540 | |
| 1541 | *tdp_actions = tracepoint_list.stringify (); |
| 1542 | *stepping_actions = stepping_list.stringify (); |
| 1543 | } |
| 1544 | |
| 1545 | void |
| 1546 | collection_list::add_aexpr (agent_expr_up aexpr) |
| 1547 | { |
| 1548 | m_aexprs.push_back (std::move (aexpr)); |
| 1549 | } |
| 1550 | |
| 1551 | static void |
| 1552 | process_tracepoint_on_disconnect (void) |
| 1553 | { |
| 1554 | int has_pending_p = 0; |
| 1555 | |
| 1556 | /* Check whether we still have pending tracepoint. If we have, warn the |
| 1557 | user that pending tracepoint will no longer work. */ |
| 1558 | for (breakpoint *b : all_tracepoints ()) |
| 1559 | { |
| 1560 | if (b->loc == NULL) |
| 1561 | { |
| 1562 | has_pending_p = 1; |
| 1563 | break; |
| 1564 | } |
| 1565 | else |
| 1566 | { |
| 1567 | for (bp_location *loc1 : b->locations ()) |
| 1568 | { |
| 1569 | if (loc1->shlib_disabled) |
| 1570 | { |
| 1571 | has_pending_p = 1; |
| 1572 | break; |
| 1573 | } |
| 1574 | } |
| 1575 | |
| 1576 | if (has_pending_p) |
| 1577 | break; |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | if (has_pending_p) |
| 1582 | warning (_("Pending tracepoints will not be resolved while" |
| 1583 | " GDB is disconnected\n")); |
| 1584 | } |
| 1585 | |
| 1586 | /* Reset local state of tracing. */ |
| 1587 | |
| 1588 | void |
| 1589 | trace_reset_local_state (void) |
| 1590 | { |
| 1591 | set_traceframe_num (-1); |
| 1592 | set_tracepoint_num (-1); |
| 1593 | set_traceframe_context (NULL); |
| 1594 | clear_traceframe_info (); |
| 1595 | } |
| 1596 | |
| 1597 | void |
| 1598 | start_tracing (const char *notes) |
| 1599 | { |
| 1600 | int any_enabled = 0, num_to_download = 0; |
| 1601 | int ret; |
| 1602 | |
| 1603 | auto tracepoint_range = all_tracepoints (); |
| 1604 | |
| 1605 | /* No point in tracing without any tracepoints... */ |
| 1606 | if (tracepoint_range.begin () == tracepoint_range.end ()) |
| 1607 | error (_("No tracepoints defined, not starting trace")); |
| 1608 | |
| 1609 | for (breakpoint *b : tracepoint_range) |
| 1610 | { |
| 1611 | if (b->enable_state == bp_enabled) |
| 1612 | any_enabled = 1; |
| 1613 | |
| 1614 | if ((b->type == bp_fast_tracepoint |
| 1615 | ? may_insert_fast_tracepoints |
| 1616 | : may_insert_tracepoints)) |
| 1617 | ++num_to_download; |
| 1618 | else |
| 1619 | warning (_("May not insert %stracepoints, skipping tracepoint %d"), |
| 1620 | (b->type == bp_fast_tracepoint ? "fast " : ""), b->number); |
| 1621 | } |
| 1622 | |
| 1623 | if (!any_enabled) |
| 1624 | { |
| 1625 | if (target_supports_enable_disable_tracepoint ()) |
| 1626 | warning (_("No tracepoints enabled")); |
| 1627 | else |
| 1628 | { |
| 1629 | /* No point in tracing with only disabled tracepoints that |
| 1630 | cannot be re-enabled. */ |
| 1631 | error (_("No tracepoints enabled, not starting trace")); |
| 1632 | } |
| 1633 | } |
| 1634 | |
| 1635 | if (num_to_download <= 0) |
| 1636 | error (_("No tracepoints that may be downloaded, not starting trace")); |
| 1637 | |
| 1638 | target_trace_init (); |
| 1639 | |
| 1640 | for (breakpoint *b : tracepoint_range) |
| 1641 | { |
| 1642 | struct tracepoint *t = (struct tracepoint *) b; |
| 1643 | int bp_location_downloaded = 0; |
| 1644 | |
| 1645 | /* Clear `inserted' flag. */ |
| 1646 | for (bp_location *loc : b->locations ()) |
| 1647 | loc->inserted = 0; |
| 1648 | |
| 1649 | if ((b->type == bp_fast_tracepoint |
| 1650 | ? !may_insert_fast_tracepoints |
| 1651 | : !may_insert_tracepoints)) |
| 1652 | continue; |
| 1653 | |
| 1654 | t->number_on_target = 0; |
| 1655 | |
| 1656 | for (bp_location *loc : b->locations ()) |
| 1657 | { |
| 1658 | /* Since tracepoint locations are never duplicated, `inserted' |
| 1659 | flag should be zero. */ |
| 1660 | gdb_assert (!loc->inserted); |
| 1661 | |
| 1662 | target_download_tracepoint (loc); |
| 1663 | |
| 1664 | loc->inserted = 1; |
| 1665 | bp_location_downloaded = 1; |
| 1666 | } |
| 1667 | |
| 1668 | t->number_on_target = b->number; |
| 1669 | |
| 1670 | for (bp_location *loc : b->locations ()) |
| 1671 | if (loc->probe.prob != NULL) |
| 1672 | loc->probe.prob->set_semaphore (loc->probe.objfile, |
| 1673 | loc->gdbarch); |
| 1674 | |
| 1675 | if (bp_location_downloaded) |
| 1676 | gdb::observers::breakpoint_modified.notify (b); |
| 1677 | } |
| 1678 | |
| 1679 | /* Send down all the trace state variables too. */ |
| 1680 | for (const trace_state_variable &tsv : tvariables) |
| 1681 | target_download_trace_state_variable (tsv); |
| 1682 | |
| 1683 | /* Tell target to treat text-like sections as transparent. */ |
| 1684 | target_trace_set_readonly_regions (); |
| 1685 | /* Set some mode flags. */ |
| 1686 | target_set_disconnected_tracing (disconnected_tracing); |
| 1687 | target_set_circular_trace_buffer (circular_trace_buffer); |
| 1688 | target_set_trace_buffer_size (trace_buffer_size); |
| 1689 | |
| 1690 | if (!notes) |
| 1691 | notes = trace_notes; |
| 1692 | ret = target_set_trace_notes (trace_user, notes, NULL); |
| 1693 | |
| 1694 | if (!ret && (trace_user || notes)) |
| 1695 | warning (_("Target does not support trace user/notes, info ignored")); |
| 1696 | |
| 1697 | /* Now insert traps and begin collecting data. */ |
| 1698 | target_trace_start (); |
| 1699 | |
| 1700 | /* Reset our local state. */ |
| 1701 | trace_reset_local_state (); |
| 1702 | current_trace_status()->running = 1; |
| 1703 | } |
| 1704 | |
| 1705 | /* The tstart command requests the target to start a new trace run. |
| 1706 | The command passes any arguments it has to the target verbatim, as |
| 1707 | an optional "trace note". This is useful as for instance a warning |
| 1708 | to other users if the trace runs disconnected, and you don't want |
| 1709 | anybody else messing with the target. */ |
| 1710 | |
| 1711 | static void |
| 1712 | tstart_command (const char *args, int from_tty) |
| 1713 | { |
| 1714 | dont_repeat (); /* Like "run", dangerous to repeat accidentally. */ |
| 1715 | |
| 1716 | if (current_trace_status ()->running) |
| 1717 | { |
| 1718 | if (from_tty |
| 1719 | && !query (_("A trace is running already. Start a new run? "))) |
| 1720 | error (_("New trace run not started.")); |
| 1721 | } |
| 1722 | |
| 1723 | start_tracing (args); |
| 1724 | } |
| 1725 | |
| 1726 | /* The tstop command stops the tracing run. The command passes any |
| 1727 | supplied arguments to the target verbatim as a "stop note"; if the |
| 1728 | target supports trace notes, then it will be reported back as part |
| 1729 | of the trace run's status. */ |
| 1730 | |
| 1731 | static void |
| 1732 | tstop_command (const char *args, int from_tty) |
| 1733 | { |
| 1734 | if (!current_trace_status ()->running) |
| 1735 | error (_("Trace is not running.")); |
| 1736 | |
| 1737 | stop_tracing (args); |
| 1738 | } |
| 1739 | |
| 1740 | void |
| 1741 | stop_tracing (const char *note) |
| 1742 | { |
| 1743 | int ret; |
| 1744 | |
| 1745 | target_trace_stop (); |
| 1746 | |
| 1747 | for (breakpoint *t : all_tracepoints ()) |
| 1748 | { |
| 1749 | if ((t->type == bp_fast_tracepoint |
| 1750 | ? !may_insert_fast_tracepoints |
| 1751 | : !may_insert_tracepoints)) |
| 1752 | continue; |
| 1753 | |
| 1754 | for (bp_location *loc : t->locations ()) |
| 1755 | { |
| 1756 | /* GDB can be totally absent in some disconnected trace scenarios, |
| 1757 | but we don't really care if this semaphore goes out of sync. |
| 1758 | That's why we are decrementing it here, but not taking care |
| 1759 | in other places. */ |
| 1760 | if (loc->probe.prob != NULL) |
| 1761 | loc->probe.prob->clear_semaphore (loc->probe.objfile, |
| 1762 | loc->gdbarch); |
| 1763 | } |
| 1764 | } |
| 1765 | |
| 1766 | if (!note) |
| 1767 | note = trace_stop_notes; |
| 1768 | ret = target_set_trace_notes (NULL, NULL, note); |
| 1769 | |
| 1770 | if (!ret && note) |
| 1771 | warning (_("Target does not support trace notes, note ignored")); |
| 1772 | |
| 1773 | /* Should change in response to reply? */ |
| 1774 | current_trace_status ()->running = 0; |
| 1775 | } |
| 1776 | |
| 1777 | /* tstatus command */ |
| 1778 | static void |
| 1779 | tstatus_command (const char *args, int from_tty) |
| 1780 | { |
| 1781 | struct trace_status *ts = current_trace_status (); |
| 1782 | int status; |
| 1783 | |
| 1784 | status = target_get_trace_status (ts); |
| 1785 | |
| 1786 | if (status == -1) |
| 1787 | { |
| 1788 | if (ts->filename != NULL) |
| 1789 | printf_filtered (_("Using a trace file.\n")); |
| 1790 | else |
| 1791 | { |
| 1792 | printf_filtered (_("Trace can not be run on this target.\n")); |
| 1793 | return; |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | if (!ts->running_known) |
| 1798 | { |
| 1799 | printf_filtered (_("Run/stop status is unknown.\n")); |
| 1800 | } |
| 1801 | else if (ts->running) |
| 1802 | { |
| 1803 | printf_filtered (_("Trace is running on the target.\n")); |
| 1804 | } |
| 1805 | else |
| 1806 | { |
| 1807 | switch (ts->stop_reason) |
| 1808 | { |
| 1809 | case trace_never_run: |
| 1810 | printf_filtered (_("No trace has been run on the target.\n")); |
| 1811 | break; |
| 1812 | case trace_stop_command: |
| 1813 | if (ts->stop_desc) |
| 1814 | printf_filtered (_("Trace stopped by a tstop command (%s).\n"), |
| 1815 | ts->stop_desc); |
| 1816 | else |
| 1817 | printf_filtered (_("Trace stopped by a tstop command.\n")); |
| 1818 | break; |
| 1819 | case trace_buffer_full: |
| 1820 | printf_filtered (_("Trace stopped because the buffer was full.\n")); |
| 1821 | break; |
| 1822 | case trace_disconnected: |
| 1823 | printf_filtered (_("Trace stopped because of disconnection.\n")); |
| 1824 | break; |
| 1825 | case tracepoint_passcount: |
| 1826 | printf_filtered (_("Trace stopped by tracepoint %d.\n"), |
| 1827 | ts->stopping_tracepoint); |
| 1828 | break; |
| 1829 | case tracepoint_error: |
| 1830 | if (ts->stopping_tracepoint) |
| 1831 | printf_filtered (_("Trace stopped by an " |
| 1832 | "error (%s, tracepoint %d).\n"), |
| 1833 | ts->stop_desc, ts->stopping_tracepoint); |
| 1834 | else |
| 1835 | printf_filtered (_("Trace stopped by an error (%s).\n"), |
| 1836 | ts->stop_desc); |
| 1837 | break; |
| 1838 | case trace_stop_reason_unknown: |
| 1839 | printf_filtered (_("Trace stopped for an unknown reason.\n")); |
| 1840 | break; |
| 1841 | default: |
| 1842 | printf_filtered (_("Trace stopped for some other reason (%d).\n"), |
| 1843 | ts->stop_reason); |
| 1844 | break; |
| 1845 | } |
| 1846 | } |
| 1847 | |
| 1848 | if (ts->traceframes_created >= 0 |
| 1849 | && ts->traceframe_count != ts->traceframes_created) |
| 1850 | { |
| 1851 | printf_filtered (_("Buffer contains %d trace " |
| 1852 | "frames (of %d created total).\n"), |
| 1853 | ts->traceframe_count, ts->traceframes_created); |
| 1854 | } |
| 1855 | else if (ts->traceframe_count >= 0) |
| 1856 | { |
| 1857 | printf_filtered (_("Collected %d trace frames.\n"), |
| 1858 | ts->traceframe_count); |
| 1859 | } |
| 1860 | |
| 1861 | if (ts->buffer_free >= 0) |
| 1862 | { |
| 1863 | if (ts->buffer_size >= 0) |
| 1864 | { |
| 1865 | printf_filtered (_("Trace buffer has %d bytes of %d bytes free"), |
| 1866 | ts->buffer_free, ts->buffer_size); |
| 1867 | if (ts->buffer_size > 0) |
| 1868 | printf_filtered (_(" (%d%% full)"), |
| 1869 | ((int) ((((long long) (ts->buffer_size |
| 1870 | - ts->buffer_free)) * 100) |
| 1871 | / ts->buffer_size))); |
| 1872 | printf_filtered (_(".\n")); |
| 1873 | } |
| 1874 | else |
| 1875 | printf_filtered (_("Trace buffer has %d bytes free.\n"), |
| 1876 | ts->buffer_free); |
| 1877 | } |
| 1878 | |
| 1879 | if (ts->disconnected_tracing) |
| 1880 | printf_filtered (_("Trace will continue if GDB disconnects.\n")); |
| 1881 | else |
| 1882 | printf_filtered (_("Trace will stop if GDB disconnects.\n")); |
| 1883 | |
| 1884 | if (ts->circular_buffer) |
| 1885 | printf_filtered (_("Trace buffer is circular.\n")); |
| 1886 | |
| 1887 | if (ts->user_name && strlen (ts->user_name) > 0) |
| 1888 | printf_filtered (_("Trace user is %s.\n"), ts->user_name); |
| 1889 | |
| 1890 | if (ts->notes && strlen (ts->notes) > 0) |
| 1891 | printf_filtered (_("Trace notes: %s.\n"), ts->notes); |
| 1892 | |
| 1893 | /* Now report on what we're doing with tfind. */ |
| 1894 | if (traceframe_number >= 0) |
| 1895 | printf_filtered (_("Looking at trace frame %d, tracepoint %d.\n"), |
| 1896 | traceframe_number, tracepoint_number); |
| 1897 | else |
| 1898 | printf_filtered (_("Not looking at any trace frame.\n")); |
| 1899 | |
| 1900 | /* Report start/stop times if supplied. */ |
| 1901 | if (ts->start_time) |
| 1902 | { |
| 1903 | if (ts->stop_time) |
| 1904 | { |
| 1905 | LONGEST run_time = ts->stop_time - ts->start_time; |
| 1906 | |
| 1907 | /* Reporting a run time is more readable than two long numbers. */ |
| 1908 | printf_filtered (_("Trace started at %ld.%06ld secs, stopped %ld.%06ld secs later.\n"), |
| 1909 | (long int) (ts->start_time / 1000000), |
| 1910 | (long int) (ts->start_time % 1000000), |
| 1911 | (long int) (run_time / 1000000), |
| 1912 | (long int) (run_time % 1000000)); |
| 1913 | } |
| 1914 | else |
| 1915 | printf_filtered (_("Trace started at %ld.%06ld secs.\n"), |
| 1916 | (long int) (ts->start_time / 1000000), |
| 1917 | (long int) (ts->start_time % 1000000)); |
| 1918 | } |
| 1919 | else if (ts->stop_time) |
| 1920 | printf_filtered (_("Trace stopped at %ld.%06ld secs.\n"), |
| 1921 | (long int) (ts->stop_time / 1000000), |
| 1922 | (long int) (ts->stop_time % 1000000)); |
| 1923 | |
| 1924 | /* Now report any per-tracepoint status available. */ |
| 1925 | for (breakpoint *t : all_tracepoints ()) |
| 1926 | target_get_tracepoint_status (t, NULL); |
| 1927 | } |
| 1928 | |
| 1929 | /* Report the trace status to uiout, in a way suitable for MI, and not |
| 1930 | suitable for CLI. If ON_STOP is true, suppress a few fields that |
| 1931 | are not meaningful in the -trace-stop response. |
| 1932 | |
| 1933 | The implementation is essentially parallel to trace_status_command, but |
| 1934 | merging them will result in unreadable code. */ |
| 1935 | void |
| 1936 | trace_status_mi (int on_stop) |
| 1937 | { |
| 1938 | struct ui_out *uiout = current_uiout; |
| 1939 | struct trace_status *ts = current_trace_status (); |
| 1940 | int status; |
| 1941 | |
| 1942 | status = target_get_trace_status (ts); |
| 1943 | |
| 1944 | if (status == -1 && ts->filename == NULL) |
| 1945 | { |
| 1946 | uiout->field_string ("supported", "0"); |
| 1947 | return; |
| 1948 | } |
| 1949 | |
| 1950 | if (ts->filename != NULL) |
| 1951 | uiout->field_string ("supported", "file"); |
| 1952 | else if (!on_stop) |
| 1953 | uiout->field_string ("supported", "1"); |
| 1954 | |
| 1955 | if (ts->filename != NULL) |
| 1956 | uiout->field_string ("trace-file", ts->filename); |
| 1957 | |
| 1958 | gdb_assert (ts->running_known); |
| 1959 | |
| 1960 | if (ts->running) |
| 1961 | { |
| 1962 | uiout->field_string ("running", "1"); |
| 1963 | |
| 1964 | /* Unlike CLI, do not show the state of 'disconnected-tracing' variable. |
| 1965 | Given that the frontend gets the status either on -trace-stop, or from |
| 1966 | -trace-status after re-connection, it does not seem like this |
| 1967 | information is necessary for anything. It is not necessary for either |
| 1968 | figuring the vital state of the target nor for navigation of trace |
| 1969 | frames. If the frontend wants to show the current state is some |
| 1970 | configure dialog, it can request the value when such dialog is |
| 1971 | invoked by the user. */ |
| 1972 | } |
| 1973 | else |
| 1974 | { |
| 1975 | const char *stop_reason = NULL; |
| 1976 | int stopping_tracepoint = -1; |
| 1977 | |
| 1978 | if (!on_stop) |
| 1979 | uiout->field_string ("running", "0"); |
| 1980 | |
| 1981 | if (ts->stop_reason != trace_stop_reason_unknown) |
| 1982 | { |
| 1983 | switch (ts->stop_reason) |
| 1984 | { |
| 1985 | case trace_stop_command: |
| 1986 | stop_reason = "request"; |
| 1987 | break; |
| 1988 | case trace_buffer_full: |
| 1989 | stop_reason = "overflow"; |
| 1990 | break; |
| 1991 | case trace_disconnected: |
| 1992 | stop_reason = "disconnection"; |
| 1993 | break; |
| 1994 | case tracepoint_passcount: |
| 1995 | stop_reason = "passcount"; |
| 1996 | stopping_tracepoint = ts->stopping_tracepoint; |
| 1997 | break; |
| 1998 | case tracepoint_error: |
| 1999 | stop_reason = "error"; |
| 2000 | stopping_tracepoint = ts->stopping_tracepoint; |
| 2001 | break; |
| 2002 | } |
| 2003 | |
| 2004 | if (stop_reason) |
| 2005 | { |
| 2006 | uiout->field_string ("stop-reason", stop_reason); |
| 2007 | if (stopping_tracepoint != -1) |
| 2008 | uiout->field_signed ("stopping-tracepoint", |
| 2009 | stopping_tracepoint); |
| 2010 | if (ts->stop_reason == tracepoint_error) |
| 2011 | uiout->field_string ("error-description", |
| 2012 | ts->stop_desc); |
| 2013 | } |
| 2014 | } |
| 2015 | } |
| 2016 | |
| 2017 | if (ts->traceframe_count != -1) |
| 2018 | uiout->field_signed ("frames", ts->traceframe_count); |
| 2019 | if (ts->traceframes_created != -1) |
| 2020 | uiout->field_signed ("frames-created", ts->traceframes_created); |
| 2021 | if (ts->buffer_size != -1) |
| 2022 | uiout->field_signed ("buffer-size", ts->buffer_size); |
| 2023 | if (ts->buffer_free != -1) |
| 2024 | uiout->field_signed ("buffer-free", ts->buffer_free); |
| 2025 | |
| 2026 | uiout->field_signed ("disconnected", ts->disconnected_tracing); |
| 2027 | uiout->field_signed ("circular", ts->circular_buffer); |
| 2028 | |
| 2029 | uiout->field_string ("user-name", ts->user_name); |
| 2030 | uiout->field_string ("notes", ts->notes); |
| 2031 | |
| 2032 | { |
| 2033 | char buf[100]; |
| 2034 | |
| 2035 | xsnprintf (buf, sizeof buf, "%ld.%06ld", |
| 2036 | (long int) (ts->start_time / 1000000), |
| 2037 | (long int) (ts->start_time % 1000000)); |
| 2038 | uiout->field_string ("start-time", buf); |
| 2039 | xsnprintf (buf, sizeof buf, "%ld.%06ld", |
| 2040 | (long int) (ts->stop_time / 1000000), |
| 2041 | (long int) (ts->stop_time % 1000000)); |
| 2042 | uiout->field_string ("stop-time", buf); |
| 2043 | } |
| 2044 | } |
| 2045 | |
| 2046 | /* Check if a trace run is ongoing. If so, and FROM_TTY, query the |
| 2047 | user if she really wants to detach. */ |
| 2048 | |
| 2049 | void |
| 2050 | query_if_trace_running (int from_tty) |
| 2051 | { |
| 2052 | if (!from_tty) |
| 2053 | return; |
| 2054 | |
| 2055 | /* It can happen that the target that was tracing went away on its |
| 2056 | own, and we didn't notice. Get a status update, and if the |
| 2057 | current target doesn't even do tracing, then assume it's not |
| 2058 | running anymore. */ |
| 2059 | if (target_get_trace_status (current_trace_status ()) < 0) |
| 2060 | current_trace_status ()->running = 0; |
| 2061 | |
| 2062 | /* If running interactively, give the user the option to cancel and |
| 2063 | then decide what to do differently with the run. Scripts are |
| 2064 | just going to disconnect and let the target deal with it, |
| 2065 | according to how it's been instructed previously via |
| 2066 | disconnected-tracing. */ |
| 2067 | if (current_trace_status ()->running) |
| 2068 | { |
| 2069 | process_tracepoint_on_disconnect (); |
| 2070 | |
| 2071 | if (current_trace_status ()->disconnected_tracing) |
| 2072 | { |
| 2073 | if (!query (_("Trace is running and will " |
| 2074 | "continue after detach; detach anyway? "))) |
| 2075 | error (_("Not confirmed.")); |
| 2076 | } |
| 2077 | else |
| 2078 | { |
| 2079 | if (!query (_("Trace is running but will " |
| 2080 | "stop on detach; detach anyway? "))) |
| 2081 | error (_("Not confirmed.")); |
| 2082 | } |
| 2083 | } |
| 2084 | } |
| 2085 | |
| 2086 | /* This function handles the details of what to do about an ongoing |
| 2087 | tracing run if the user has asked to detach or otherwise disconnect |
| 2088 | from the target. */ |
| 2089 | |
| 2090 | void |
| 2091 | disconnect_tracing (void) |
| 2092 | { |
| 2093 | /* Also we want to be out of tfind mode, otherwise things can get |
| 2094 | confusing upon reconnection. Just use these calls instead of |
| 2095 | full tfind_1 behavior because we're in the middle of detaching, |
| 2096 | and there's no point to updating current stack frame etc. */ |
| 2097 | trace_reset_local_state (); |
| 2098 | } |
| 2099 | |
| 2100 | /* Worker function for the various flavors of the tfind command. */ |
| 2101 | void |
| 2102 | tfind_1 (enum trace_find_type type, int num, |
| 2103 | CORE_ADDR addr1, CORE_ADDR addr2, |
| 2104 | int from_tty) |
| 2105 | { |
| 2106 | int target_frameno = -1, target_tracept = -1; |
| 2107 | struct frame_id old_frame_id = null_frame_id; |
| 2108 | struct tracepoint *tp; |
| 2109 | struct ui_out *uiout = current_uiout; |
| 2110 | |
| 2111 | /* Only try to get the current stack frame if we have a chance of |
| 2112 | succeeding. In particular, if we're trying to get a first trace |
| 2113 | frame while all threads are running, it's not going to succeed, |
| 2114 | so leave it with a default value and let the frame comparison |
| 2115 | below (correctly) decide to print out the source location of the |
| 2116 | trace frame. */ |
| 2117 | if (!(type == tfind_number && num == -1) |
| 2118 | && (has_stack_frames () || traceframe_number >= 0)) |
| 2119 | old_frame_id = get_frame_id (get_current_frame ()); |
| 2120 | |
| 2121 | target_frameno = target_trace_find (type, num, addr1, addr2, |
| 2122 | &target_tracept); |
| 2123 | |
| 2124 | if (type == tfind_number |
| 2125 | && num == -1 |
| 2126 | && target_frameno == -1) |
| 2127 | { |
| 2128 | /* We told the target to get out of tfind mode, and it did. */ |
| 2129 | } |
| 2130 | else if (target_frameno == -1) |
| 2131 | { |
| 2132 | /* A request for a non-existent trace frame has failed. |
| 2133 | Our response will be different, depending on FROM_TTY: |
| 2134 | |
| 2135 | If FROM_TTY is true, meaning that this command was |
| 2136 | typed interactively by the user, then give an error |
| 2137 | and DO NOT change the state of traceframe_number etc. |
| 2138 | |
| 2139 | However if FROM_TTY is false, meaning that we're either |
| 2140 | in a script, a loop, or a user-defined command, then |
| 2141 | DON'T give an error, but DO change the state of |
| 2142 | traceframe_number etc. to invalid. |
| 2143 | |
| 2144 | The rationale is that if you typed the command, you |
| 2145 | might just have committed a typo or something, and you'd |
| 2146 | like to NOT lose your current debugging state. However |
| 2147 | if you're in a user-defined command or especially in a |
| 2148 | loop, then you need a way to detect that the command |
| 2149 | failed WITHOUT aborting. This allows you to write |
| 2150 | scripts that search thru the trace buffer until the end, |
| 2151 | and then continue on to do something else. */ |
| 2152 | |
| 2153 | if (from_tty) |
| 2154 | error (_("Target failed to find requested trace frame.")); |
| 2155 | else |
| 2156 | { |
| 2157 | if (info_verbose) |
| 2158 | printf_filtered ("End of trace buffer.\n"); |
| 2159 | #if 0 /* dubious now? */ |
| 2160 | /* The following will not recurse, since it's |
| 2161 | special-cased. */ |
| 2162 | tfind_command ("-1", from_tty); |
| 2163 | #endif |
| 2164 | } |
| 2165 | } |
| 2166 | |
| 2167 | tp = get_tracepoint_by_number_on_target (target_tracept); |
| 2168 | |
| 2169 | reinit_frame_cache (); |
| 2170 | target_dcache_invalidate (); |
| 2171 | |
| 2172 | set_tracepoint_num (tp ? tp->number : target_tracept); |
| 2173 | |
| 2174 | if (target_frameno != get_traceframe_number ()) |
| 2175 | gdb::observers::traceframe_changed.notify (target_frameno, tracepoint_number); |
| 2176 | |
| 2177 | set_current_traceframe (target_frameno); |
| 2178 | |
| 2179 | if (target_frameno == -1) |
| 2180 | set_traceframe_context (NULL); |
| 2181 | else |
| 2182 | set_traceframe_context (get_current_frame ()); |
| 2183 | |
| 2184 | if (traceframe_number >= 0) |
| 2185 | { |
| 2186 | /* Use different branches for MI and CLI to make CLI messages |
| 2187 | i18n-eable. */ |
| 2188 | if (uiout->is_mi_like_p ()) |
| 2189 | { |
| 2190 | uiout->field_string ("found", "1"); |
| 2191 | uiout->field_signed ("tracepoint", tracepoint_number); |
| 2192 | uiout->field_signed ("traceframe", traceframe_number); |
| 2193 | } |
| 2194 | else |
| 2195 | { |
| 2196 | printf_unfiltered (_("Found trace frame %d, tracepoint %d\n"), |
| 2197 | traceframe_number, tracepoint_number); |
| 2198 | } |
| 2199 | } |
| 2200 | else |
| 2201 | { |
| 2202 | if (uiout->is_mi_like_p ()) |
| 2203 | uiout->field_string ("found", "0"); |
| 2204 | else if (type == tfind_number && num == -1) |
| 2205 | printf_unfiltered (_("No longer looking at any trace frame\n")); |
| 2206 | else /* This case may never occur, check. */ |
| 2207 | printf_unfiltered (_("No trace frame found\n")); |
| 2208 | } |
| 2209 | |
| 2210 | /* If we're in nonstop mode and getting out of looking at trace |
| 2211 | frames, there won't be any current frame to go back to and |
| 2212 | display. */ |
| 2213 | if (from_tty |
| 2214 | && (has_stack_frames () || traceframe_number >= 0)) |
| 2215 | { |
| 2216 | enum print_what print_what; |
| 2217 | |
| 2218 | /* NOTE: in imitation of the step command, try to determine |
| 2219 | whether we have made a transition from one function to |
| 2220 | another. If so, we'll print the "stack frame" (ie. the new |
| 2221 | function and it's arguments) -- otherwise we'll just show the |
| 2222 | new source line. */ |
| 2223 | |
| 2224 | if (frame_id_eq (old_frame_id, |
| 2225 | get_frame_id (get_current_frame ()))) |
| 2226 | print_what = SRC_LINE; |
| 2227 | else |
| 2228 | print_what = SRC_AND_LOC; |
| 2229 | |
| 2230 | print_stack_frame (get_selected_frame (NULL), 1, print_what, 1); |
| 2231 | do_displays (); |
| 2232 | } |
| 2233 | } |
| 2234 | |
| 2235 | /* Error on looking at traceframes while trace is running. */ |
| 2236 | |
| 2237 | void |
| 2238 | check_trace_running (struct trace_status *status) |
| 2239 | { |
| 2240 | if (status->running && status->filename == NULL) |
| 2241 | error (_("May not look at trace frames while trace is running.")); |
| 2242 | } |
| 2243 | |
| 2244 | /* trace_find_command takes a trace frame number n, |
| 2245 | sends "QTFrame:<n>" to the target, |
| 2246 | and accepts a reply that may contain several optional pieces |
| 2247 | of information: a frame number, a tracepoint number, and an |
| 2248 | indication of whether this is a trap frame or a stepping frame. |
| 2249 | |
| 2250 | The minimal response is just "OK" (which indicates that the |
| 2251 | target does not give us a frame number or a tracepoint number). |
| 2252 | Instead of that, the target may send us a string containing |
| 2253 | any combination of: |
| 2254 | F<hexnum> (gives the selected frame number) |
| 2255 | T<hexnum> (gives the selected tracepoint number) |
| 2256 | */ |
| 2257 | |
| 2258 | /* tfind command */ |
| 2259 | static void |
| 2260 | tfind_command_1 (const char *args, int from_tty) |
| 2261 | { /* This should only be called with a numeric argument. */ |
| 2262 | int frameno = -1; |
| 2263 | |
| 2264 | check_trace_running (current_trace_status ()); |
| 2265 | |
| 2266 | if (args == 0 || *args == 0) |
| 2267 | { /* TFIND with no args means find NEXT trace frame. */ |
| 2268 | if (traceframe_number == -1) |
| 2269 | frameno = 0; /* "next" is first one. */ |
| 2270 | else |
| 2271 | frameno = traceframe_number + 1; |
| 2272 | } |
| 2273 | else if (0 == strcmp (args, "-")) |
| 2274 | { |
| 2275 | if (traceframe_number == -1) |
| 2276 | error (_("not debugging trace buffer")); |
| 2277 | else if (from_tty && traceframe_number == 0) |
| 2278 | error (_("already at start of trace buffer")); |
| 2279 | |
| 2280 | frameno = traceframe_number - 1; |
| 2281 | } |
| 2282 | /* A hack to work around eval's need for fp to have been collected. */ |
| 2283 | else if (0 == strcmp (args, "-1")) |
| 2284 | frameno = -1; |
| 2285 | else |
| 2286 | frameno = parse_and_eval_long (args); |
| 2287 | |
| 2288 | if (frameno < -1) |
| 2289 | error (_("invalid input (%d is less than zero)"), frameno); |
| 2290 | |
| 2291 | tfind_1 (tfind_number, frameno, 0, 0, from_tty); |
| 2292 | } |
| 2293 | |
| 2294 | static void |
| 2295 | tfind_command (const char *args, int from_tty) |
| 2296 | { |
| 2297 | tfind_command_1 (args, from_tty); |
| 2298 | } |
| 2299 | |
| 2300 | /* tfind end */ |
| 2301 | static void |
| 2302 | tfind_end_command (const char *args, int from_tty) |
| 2303 | { |
| 2304 | tfind_command_1 ("-1", from_tty); |
| 2305 | } |
| 2306 | |
| 2307 | /* tfind start */ |
| 2308 | static void |
| 2309 | tfind_start_command (const char *args, int from_tty) |
| 2310 | { |
| 2311 | tfind_command_1 ("0", from_tty); |
| 2312 | } |
| 2313 | |
| 2314 | /* tfind pc command */ |
| 2315 | static void |
| 2316 | tfind_pc_command (const char *args, int from_tty) |
| 2317 | { |
| 2318 | CORE_ADDR pc; |
| 2319 | |
| 2320 | check_trace_running (current_trace_status ()); |
| 2321 | |
| 2322 | if (args == 0 || *args == 0) |
| 2323 | pc = regcache_read_pc (get_current_regcache ()); |
| 2324 | else |
| 2325 | pc = parse_and_eval_address (args); |
| 2326 | |
| 2327 | tfind_1 (tfind_pc, 0, pc, 0, from_tty); |
| 2328 | } |
| 2329 | |
| 2330 | /* tfind tracepoint command */ |
| 2331 | static void |
| 2332 | tfind_tracepoint_command (const char *args, int from_tty) |
| 2333 | { |
| 2334 | int tdp; |
| 2335 | struct tracepoint *tp; |
| 2336 | |
| 2337 | check_trace_running (current_trace_status ()); |
| 2338 | |
| 2339 | if (args == 0 || *args == 0) |
| 2340 | { |
| 2341 | if (tracepoint_number == -1) |
| 2342 | error (_("No current tracepoint -- please supply an argument.")); |
| 2343 | else |
| 2344 | tdp = tracepoint_number; /* Default is current TDP. */ |
| 2345 | } |
| 2346 | else |
| 2347 | tdp = parse_and_eval_long (args); |
| 2348 | |
| 2349 | /* If we have the tracepoint on hand, use the number that the |
| 2350 | target knows about (which may be different if we disconnected |
| 2351 | and reconnected). */ |
| 2352 | tp = get_tracepoint (tdp); |
| 2353 | if (tp) |
| 2354 | tdp = tp->number_on_target; |
| 2355 | |
| 2356 | tfind_1 (tfind_tp, tdp, 0, 0, from_tty); |
| 2357 | } |
| 2358 | |
| 2359 | /* TFIND LINE command: |
| 2360 | |
| 2361 | This command will take a sourceline for argument, just like BREAK |
| 2362 | or TRACE (ie. anything that "decode_line_1" can handle). |
| 2363 | |
| 2364 | With no argument, this command will find the next trace frame |
| 2365 | corresponding to a source line OTHER THAN THE CURRENT ONE. */ |
| 2366 | |
| 2367 | static void |
| 2368 | tfind_line_command (const char *args, int from_tty) |
| 2369 | { |
| 2370 | check_trace_running (current_trace_status ()); |
| 2371 | |
| 2372 | symtab_and_line sal; |
| 2373 | if (args == 0 || *args == 0) |
| 2374 | { |
| 2375 | sal = find_pc_line (get_frame_pc (get_current_frame ()), 0); |
| 2376 | } |
| 2377 | else |
| 2378 | { |
| 2379 | std::vector<symtab_and_line> sals |
| 2380 | = decode_line_with_current_source (args, DECODE_LINE_FUNFIRSTLINE); |
| 2381 | sal = sals[0]; |
| 2382 | } |
| 2383 | |
| 2384 | if (sal.symtab == 0) |
| 2385 | error (_("No line number information available.")); |
| 2386 | |
| 2387 | CORE_ADDR start_pc, end_pc; |
| 2388 | if (sal.line > 0 && find_line_pc_range (sal, &start_pc, &end_pc)) |
| 2389 | { |
| 2390 | if (start_pc == end_pc) |
| 2391 | { |
| 2392 | printf_filtered ("Line %d of \"%s\"", |
| 2393 | sal.line, |
| 2394 | symtab_to_filename_for_display (sal.symtab)); |
| 2395 | wrap_here (" "); |
| 2396 | printf_filtered (" is at address "); |
| 2397 | print_address (get_current_arch (), start_pc, gdb_stdout); |
| 2398 | wrap_here (" "); |
| 2399 | printf_filtered (" but contains no code.\n"); |
| 2400 | sal = find_pc_line (start_pc, 0); |
| 2401 | if (sal.line > 0 |
| 2402 | && find_line_pc_range (sal, &start_pc, &end_pc) |
| 2403 | && start_pc != end_pc) |
| 2404 | printf_filtered ("Attempting to find line %d instead.\n", |
| 2405 | sal.line); |
| 2406 | else |
| 2407 | error (_("Cannot find a good line.")); |
| 2408 | } |
| 2409 | } |
| 2410 | else |
| 2411 | { |
| 2412 | /* Is there any case in which we get here, and have an address |
| 2413 | which the user would want to see? If we have debugging |
| 2414 | symbols and no line numbers? */ |
| 2415 | error (_("Line number %d is out of range for \"%s\"."), |
| 2416 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
| 2417 | } |
| 2418 | |
| 2419 | /* Find within range of stated line. */ |
| 2420 | if (args && *args) |
| 2421 | tfind_1 (tfind_range, 0, start_pc, end_pc - 1, from_tty); |
| 2422 | else |
| 2423 | tfind_1 (tfind_outside, 0, start_pc, end_pc - 1, from_tty); |
| 2424 | } |
| 2425 | |
| 2426 | /* tfind range command */ |
| 2427 | static void |
| 2428 | tfind_range_command (const char *args, int from_tty) |
| 2429 | { |
| 2430 | static CORE_ADDR start, stop; |
| 2431 | const char *tmp; |
| 2432 | |
| 2433 | check_trace_running (current_trace_status ()); |
| 2434 | |
| 2435 | if (args == 0 || *args == 0) |
| 2436 | { /* XXX FIXME: what should default behavior be? */ |
| 2437 | printf_filtered ("Usage: tfind range STARTADDR, ENDADDR\n"); |
| 2438 | return; |
| 2439 | } |
| 2440 | |
| 2441 | if (0 != (tmp = strchr (args, ','))) |
| 2442 | { |
| 2443 | std::string start_addr (args, tmp); |
| 2444 | ++tmp; |
| 2445 | tmp = skip_spaces (tmp); |
| 2446 | start = parse_and_eval_address (start_addr.c_str ()); |
| 2447 | stop = parse_and_eval_address (tmp); |
| 2448 | } |
| 2449 | else |
| 2450 | { /* No explicit end address? */ |
| 2451 | start = parse_and_eval_address (args); |
| 2452 | stop = start + 1; /* ??? */ |
| 2453 | } |
| 2454 | |
| 2455 | tfind_1 (tfind_range, 0, start, stop, from_tty); |
| 2456 | } |
| 2457 | |
| 2458 | /* tfind outside command */ |
| 2459 | static void |
| 2460 | tfind_outside_command (const char *args, int from_tty) |
| 2461 | { |
| 2462 | CORE_ADDR start, stop; |
| 2463 | const char *tmp; |
| 2464 | |
| 2465 | if (current_trace_status ()->running |
| 2466 | && current_trace_status ()->filename == NULL) |
| 2467 | error (_("May not look at trace frames while trace is running.")); |
| 2468 | |
| 2469 | if (args == 0 || *args == 0) |
| 2470 | { /* XXX FIXME: what should default behavior be? */ |
| 2471 | printf_filtered ("Usage: tfind outside STARTADDR, ENDADDR\n"); |
| 2472 | return; |
| 2473 | } |
| 2474 | |
| 2475 | if (0 != (tmp = strchr (args, ','))) |
| 2476 | { |
| 2477 | std::string start_addr (args, tmp); |
| 2478 | ++tmp; |
| 2479 | tmp = skip_spaces (tmp); |
| 2480 | start = parse_and_eval_address (start_addr.c_str ()); |
| 2481 | stop = parse_and_eval_address (tmp); |
| 2482 | } |
| 2483 | else |
| 2484 | { /* No explicit end address? */ |
| 2485 | start = parse_and_eval_address (args); |
| 2486 | stop = start + 1; /* ??? */ |
| 2487 | } |
| 2488 | |
| 2489 | tfind_1 (tfind_outside, 0, start, stop, from_tty); |
| 2490 | } |
| 2491 | |
| 2492 | /* info scope command: list the locals for a scope. */ |
| 2493 | static void |
| 2494 | info_scope_command (const char *args_in, int from_tty) |
| 2495 | { |
| 2496 | struct symbol *sym; |
| 2497 | struct bound_minimal_symbol msym; |
| 2498 | const struct block *block; |
| 2499 | const char *symname; |
| 2500 | const char *save_args = args_in; |
| 2501 | struct block_iterator iter; |
| 2502 | int j, count = 0; |
| 2503 | struct gdbarch *gdbarch; |
| 2504 | int regno; |
| 2505 | const char *args = args_in; |
| 2506 | |
| 2507 | if (args == 0 || *args == 0) |
| 2508 | error (_("requires an argument (function, " |
| 2509 | "line or *addr) to define a scope")); |
| 2510 | |
| 2511 | event_location_up location = string_to_event_location (&args, |
| 2512 | current_language); |
| 2513 | std::vector<symtab_and_line> sals |
| 2514 | = decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, |
| 2515 | NULL, NULL, 0); |
| 2516 | if (sals.empty ()) |
| 2517 | { |
| 2518 | /* Presumably decode_line_1 has already warned. */ |
| 2519 | return; |
| 2520 | } |
| 2521 | |
| 2522 | /* Resolve line numbers to PC. */ |
| 2523 | resolve_sal_pc (&sals[0]); |
| 2524 | block = block_for_pc (sals[0].pc); |
| 2525 | |
| 2526 | while (block != 0) |
| 2527 | { |
| 2528 | QUIT; /* Allow user to bail out with ^C. */ |
| 2529 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
| 2530 | { |
| 2531 | QUIT; /* Allow user to bail out with ^C. */ |
| 2532 | if (count == 0) |
| 2533 | printf_filtered ("Scope for %s:\n", save_args); |
| 2534 | count++; |
| 2535 | |
| 2536 | symname = sym->print_name (); |
| 2537 | if (symname == NULL || *symname == '\0') |
| 2538 | continue; /* Probably botched, certainly useless. */ |
| 2539 | |
| 2540 | gdbarch = symbol_arch (sym); |
| 2541 | |
| 2542 | printf_filtered ("Symbol %s is ", symname); |
| 2543 | |
| 2544 | if (SYMBOL_COMPUTED_OPS (sym) != NULL) |
| 2545 | SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, |
| 2546 | BLOCK_ENTRY_PC (block), |
| 2547 | gdb_stdout); |
| 2548 | else |
| 2549 | { |
| 2550 | switch (SYMBOL_CLASS (sym)) |
| 2551 | { |
| 2552 | default: |
| 2553 | case LOC_UNDEF: /* Messed up symbol? */ |
| 2554 | printf_filtered ("a bogus symbol, class %d.\n", |
| 2555 | SYMBOL_CLASS (sym)); |
| 2556 | count--; /* Don't count this one. */ |
| 2557 | continue; |
| 2558 | case LOC_CONST: |
| 2559 | printf_filtered ("a constant with value %s (%s)", |
| 2560 | plongest (SYMBOL_VALUE (sym)), |
| 2561 | hex_string (SYMBOL_VALUE (sym))); |
| 2562 | break; |
| 2563 | case LOC_CONST_BYTES: |
| 2564 | printf_filtered ("constant bytes: "); |
| 2565 | if (SYMBOL_TYPE (sym)) |
| 2566 | for (j = 0; j < TYPE_LENGTH (SYMBOL_TYPE (sym)); j++) |
| 2567 | fprintf_filtered (gdb_stdout, " %02x", |
| 2568 | (unsigned) SYMBOL_VALUE_BYTES (sym)[j]); |
| 2569 | break; |
| 2570 | case LOC_STATIC: |
| 2571 | printf_filtered ("in static storage at address "); |
| 2572 | printf_filtered ("%s", paddress (gdbarch, |
| 2573 | SYMBOL_VALUE_ADDRESS (sym))); |
| 2574 | break; |
| 2575 | case LOC_REGISTER: |
| 2576 | /* GDBARCH is the architecture associated with the objfile |
| 2577 | the symbol is defined in; the target architecture may be |
| 2578 | different, and may provide additional registers. However, |
| 2579 | we do not know the target architecture at this point. |
| 2580 | We assume the objfile architecture will contain all the |
| 2581 | standard registers that occur in debug info in that |
| 2582 | objfile. */ |
| 2583 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, |
| 2584 | gdbarch); |
| 2585 | |
| 2586 | if (SYMBOL_IS_ARGUMENT (sym)) |
| 2587 | printf_filtered ("an argument in register $%s", |
| 2588 | gdbarch_register_name (gdbarch, regno)); |
| 2589 | else |
| 2590 | printf_filtered ("a local variable in register $%s", |
| 2591 | gdbarch_register_name (gdbarch, regno)); |
| 2592 | break; |
| 2593 | case LOC_ARG: |
| 2594 | printf_filtered ("an argument at stack/frame offset %s", |
| 2595 | plongest (SYMBOL_VALUE (sym))); |
| 2596 | break; |
| 2597 | case LOC_LOCAL: |
| 2598 | printf_filtered ("a local variable at frame offset %s", |
| 2599 | plongest (SYMBOL_VALUE (sym))); |
| 2600 | break; |
| 2601 | case LOC_REF_ARG: |
| 2602 | printf_filtered ("a reference argument at offset %s", |
| 2603 | plongest (SYMBOL_VALUE (sym))); |
| 2604 | break; |
| 2605 | case LOC_REGPARM_ADDR: |
| 2606 | /* Note comment at LOC_REGISTER. */ |
| 2607 | regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, |
| 2608 | gdbarch); |
| 2609 | printf_filtered ("the address of an argument, in register $%s", |
| 2610 | gdbarch_register_name (gdbarch, regno)); |
| 2611 | break; |
| 2612 | case LOC_TYPEDEF: |
| 2613 | printf_filtered ("a typedef.\n"); |
| 2614 | continue; |
| 2615 | case LOC_LABEL: |
| 2616 | printf_filtered ("a label at address "); |
| 2617 | printf_filtered ("%s", paddress (gdbarch, |
| 2618 | SYMBOL_VALUE_ADDRESS (sym))); |
| 2619 | break; |
| 2620 | case LOC_BLOCK: |
| 2621 | printf_filtered ("a function at address "); |
| 2622 | printf_filtered ("%s", |
| 2623 | paddress (gdbarch, BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym)))); |
| 2624 | break; |
| 2625 | case LOC_UNRESOLVED: |
| 2626 | msym = lookup_minimal_symbol (sym->linkage_name (), |
| 2627 | NULL, NULL); |
| 2628 | if (msym.minsym == NULL) |
| 2629 | printf_filtered ("Unresolved Static"); |
| 2630 | else |
| 2631 | { |
| 2632 | printf_filtered ("static storage at address "); |
| 2633 | printf_filtered ("%s", |
| 2634 | paddress (gdbarch, |
| 2635 | BMSYMBOL_VALUE_ADDRESS (msym))); |
| 2636 | } |
| 2637 | break; |
| 2638 | case LOC_OPTIMIZED_OUT: |
| 2639 | printf_filtered ("optimized out.\n"); |
| 2640 | continue; |
| 2641 | case LOC_COMPUTED: |
| 2642 | gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method")); |
| 2643 | } |
| 2644 | } |
| 2645 | if (SYMBOL_TYPE (sym)) |
| 2646 | { |
| 2647 | struct type *t = check_typedef (SYMBOL_TYPE (sym)); |
| 2648 | |
| 2649 | printf_filtered (", length %s.\n", pulongest (TYPE_LENGTH (t))); |
| 2650 | } |
| 2651 | } |
| 2652 | if (BLOCK_FUNCTION (block)) |
| 2653 | break; |
| 2654 | else |
| 2655 | block = BLOCK_SUPERBLOCK (block); |
| 2656 | } |
| 2657 | if (count <= 0) |
| 2658 | printf_filtered ("Scope for %s contains no locals or arguments.\n", |
| 2659 | save_args); |
| 2660 | } |
| 2661 | |
| 2662 | /* Helper for trace_dump_command. Dump the action list starting at |
| 2663 | ACTION. STEPPING_ACTIONS is true if we're iterating over the |
| 2664 | actions of the body of a while-stepping action. STEPPING_FRAME is |
| 2665 | set if the current traceframe was determined to be a while-stepping |
| 2666 | traceframe. */ |
| 2667 | |
| 2668 | static void |
| 2669 | trace_dump_actions (struct command_line *action, |
| 2670 | int stepping_actions, int stepping_frame, |
| 2671 | int from_tty) |
| 2672 | { |
| 2673 | const char *action_exp, *next_comma; |
| 2674 | |
| 2675 | for (; action != NULL; action = action->next) |
| 2676 | { |
| 2677 | struct cmd_list_element *cmd; |
| 2678 | |
| 2679 | QUIT; /* Allow user to bail out with ^C. */ |
| 2680 | action_exp = action->line; |
| 2681 | action_exp = skip_spaces (action_exp); |
| 2682 | |
| 2683 | /* The collection actions to be done while stepping are |
| 2684 | bracketed by the commands "while-stepping" and "end". */ |
| 2685 | |
| 2686 | if (*action_exp == '#') /* comment line */ |
| 2687 | continue; |
| 2688 | |
| 2689 | cmd = lookup_cmd (&action_exp, cmdlist, "", NULL, -1, 1); |
| 2690 | if (cmd == 0) |
| 2691 | error (_("Bad action list item: %s"), action_exp); |
| 2692 | |
| 2693 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) |
| 2694 | { |
| 2695 | gdb_assert (action->body_list_1 == nullptr); |
| 2696 | trace_dump_actions (action->body_list_0.get (), |
| 2697 | 1, stepping_frame, from_tty); |
| 2698 | } |
| 2699 | else if (cmd_cfunc_eq (cmd, collect_pseudocommand)) |
| 2700 | { |
| 2701 | /* Display the collected data. |
| 2702 | For the trap frame, display only what was collected at |
| 2703 | the trap. Likewise for stepping frames, display only |
| 2704 | what was collected while stepping. This means that the |
| 2705 | two boolean variables, STEPPING_FRAME and |
| 2706 | STEPPING_ACTIONS should be equal. */ |
| 2707 | if (stepping_frame == stepping_actions) |
| 2708 | { |
| 2709 | int trace_string = 0; |
| 2710 | |
| 2711 | if (*action_exp == '/') |
| 2712 | action_exp = decode_agent_options (action_exp, &trace_string); |
| 2713 | |
| 2714 | do |
| 2715 | { /* Repeat over a comma-separated list. */ |
| 2716 | QUIT; /* Allow user to bail out with ^C. */ |
| 2717 | if (*action_exp == ',') |
| 2718 | action_exp++; |
| 2719 | action_exp = skip_spaces (action_exp); |
| 2720 | |
| 2721 | next_comma = strchr (action_exp, ','); |
| 2722 | |
| 2723 | if (0 == strncasecmp (action_exp, "$reg", 4)) |
| 2724 | registers_info (NULL, from_tty); |
| 2725 | else if (0 == strncasecmp (action_exp, "$_ret", 5)) |
| 2726 | ; |
| 2727 | else if (0 == strncasecmp (action_exp, "$loc", 4)) |
| 2728 | info_locals_command (NULL, from_tty); |
| 2729 | else if (0 == strncasecmp (action_exp, "$arg", 4)) |
| 2730 | info_args_command (NULL, from_tty); |
| 2731 | else |
| 2732 | { /* variable */ |
| 2733 | std::string contents; |
| 2734 | const char *exp = action_exp; |
| 2735 | if (next_comma != NULL) |
| 2736 | { |
| 2737 | size_t len = next_comma - action_exp; |
| 2738 | contents = std::string (action_exp, len); |
| 2739 | exp = contents.c_str (); |
| 2740 | } |
| 2741 | |
| 2742 | printf_filtered ("%s = ", exp); |
| 2743 | output_command (exp, from_tty); |
| 2744 | printf_filtered ("\n"); |
| 2745 | } |
| 2746 | action_exp = next_comma; |
| 2747 | } |
| 2748 | while (action_exp && *action_exp == ','); |
| 2749 | } |
| 2750 | } |
| 2751 | } |
| 2752 | } |
| 2753 | |
| 2754 | /* Return bp_location of the tracepoint associated with the current |
| 2755 | traceframe. Set *STEPPING_FRAME_P to 1 if the current traceframe |
| 2756 | is a stepping traceframe. */ |
| 2757 | |
| 2758 | struct bp_location * |
| 2759 | get_traceframe_location (int *stepping_frame_p) |
| 2760 | { |
| 2761 | struct tracepoint *t; |
| 2762 | struct regcache *regcache; |
| 2763 | |
| 2764 | if (tracepoint_number == -1) |
| 2765 | error (_("No current trace frame.")); |
| 2766 | |
| 2767 | t = get_tracepoint (tracepoint_number); |
| 2768 | |
| 2769 | if (t == NULL) |
| 2770 | error (_("No known tracepoint matches 'current' tracepoint #%d."), |
| 2771 | tracepoint_number); |
| 2772 | |
| 2773 | /* The current frame is a trap frame if the frame PC is equal to the |
| 2774 | tracepoint PC. If not, then the current frame was collected |
| 2775 | during single-stepping. */ |
| 2776 | regcache = get_current_regcache (); |
| 2777 | |
| 2778 | /* If the traceframe's address matches any of the tracepoint's |
| 2779 | locations, assume it is a direct hit rather than a while-stepping |
| 2780 | frame. (FIXME this is not reliable, should record each frame's |
| 2781 | type.) */ |
| 2782 | for (bp_location *tloc : t->locations ()) |
| 2783 | if (tloc->address == regcache_read_pc (regcache)) |
| 2784 | { |
| 2785 | *stepping_frame_p = 0; |
| 2786 | return tloc; |
| 2787 | } |
| 2788 | |
| 2789 | /* If this is a stepping frame, we don't know which location |
| 2790 | triggered. The first is as good (or bad) a guess as any... */ |
| 2791 | *stepping_frame_p = 1; |
| 2792 | return t->loc; |
| 2793 | } |
| 2794 | |
| 2795 | /* Return the default collect actions of a tracepoint T. */ |
| 2796 | |
| 2797 | static counted_command_line |
| 2798 | all_tracepoint_actions (struct breakpoint *t) |
| 2799 | { |
| 2800 | counted_command_line actions (nullptr, command_lines_deleter ()); |
| 2801 | |
| 2802 | /* If there are default expressions to collect, make up a collect |
| 2803 | action and prepend to the action list to encode. Note that since |
| 2804 | validation is per-tracepoint (local var "xyz" might be valid for |
| 2805 | one tracepoint and not another, etc), we make up the action on |
| 2806 | the fly, and don't cache it. */ |
| 2807 | if (*default_collect) |
| 2808 | { |
| 2809 | gdb::unique_xmalloc_ptr<char> default_collect_line |
| 2810 | (xstrprintf ("collect %s", default_collect)); |
| 2811 | |
| 2812 | validate_actionline (default_collect_line.get (), t); |
| 2813 | actions.reset (new struct command_line (simple_control, |
| 2814 | default_collect_line.release ()), |
| 2815 | command_lines_deleter ()); |
| 2816 | } |
| 2817 | |
| 2818 | return actions; |
| 2819 | } |
| 2820 | |
| 2821 | /* The tdump command. */ |
| 2822 | |
| 2823 | static void |
| 2824 | tdump_command (const char *args, int from_tty) |
| 2825 | { |
| 2826 | int stepping_frame = 0; |
| 2827 | struct bp_location *loc; |
| 2828 | |
| 2829 | /* This throws an error is not inspecting a trace frame. */ |
| 2830 | loc = get_traceframe_location (&stepping_frame); |
| 2831 | |
| 2832 | printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n", |
| 2833 | tracepoint_number, traceframe_number); |
| 2834 | |
| 2835 | /* This command only makes sense for the current frame, not the |
| 2836 | selected frame. */ |
| 2837 | scoped_restore_current_thread restore_thread; |
| 2838 | |
| 2839 | select_frame (get_current_frame ()); |
| 2840 | |
| 2841 | counted_command_line actions = all_tracepoint_actions (loc->owner); |
| 2842 | |
| 2843 | trace_dump_actions (actions.get (), 0, stepping_frame, from_tty); |
| 2844 | trace_dump_actions (breakpoint_commands (loc->owner), 0, stepping_frame, |
| 2845 | from_tty); |
| 2846 | } |
| 2847 | |
| 2848 | /* Encode a piece of a tracepoint's source-level definition in a form |
| 2849 | that is suitable for both protocol and saving in files. */ |
| 2850 | /* This version does not do multiple encodes for long strings; it should |
| 2851 | return an offset to the next piece to encode. FIXME */ |
| 2852 | |
| 2853 | int |
| 2854 | encode_source_string (int tpnum, ULONGEST addr, |
| 2855 | const char *srctype, const char *src, |
| 2856 | char *buf, int buf_size) |
| 2857 | { |
| 2858 | if (80 + strlen (srctype) > buf_size) |
| 2859 | error (_("Buffer too small for source encoding")); |
| 2860 | sprintf (buf, "%x:%s:%s:%x:%x:", |
| 2861 | tpnum, phex_nz (addr, sizeof (addr)), |
| 2862 | srctype, 0, (int) strlen (src)); |
| 2863 | if (strlen (buf) + strlen (src) * 2 >= buf_size) |
| 2864 | error (_("Source string too long for buffer")); |
| 2865 | bin2hex ((gdb_byte *) src, buf + strlen (buf), strlen (src)); |
| 2866 | return -1; |
| 2867 | } |
| 2868 | |
| 2869 | /* Tell the target what to do with an ongoing tracing run if GDB |
| 2870 | disconnects for some reason. */ |
| 2871 | |
| 2872 | static void |
| 2873 | set_disconnected_tracing (const char *args, int from_tty, |
| 2874 | struct cmd_list_element *c) |
| 2875 | { |
| 2876 | target_set_disconnected_tracing (disconnected_tracing); |
| 2877 | } |
| 2878 | |
| 2879 | static void |
| 2880 | set_circular_trace_buffer (const char *args, int from_tty, |
| 2881 | struct cmd_list_element *c) |
| 2882 | { |
| 2883 | target_set_circular_trace_buffer (circular_trace_buffer); |
| 2884 | } |
| 2885 | |
| 2886 | static void |
| 2887 | set_trace_buffer_size (const char *args, int from_tty, |
| 2888 | struct cmd_list_element *c) |
| 2889 | { |
| 2890 | target_set_trace_buffer_size (trace_buffer_size); |
| 2891 | } |
| 2892 | |
| 2893 | static void |
| 2894 | set_trace_user (const char *args, int from_tty, |
| 2895 | struct cmd_list_element *c) |
| 2896 | { |
| 2897 | int ret; |
| 2898 | |
| 2899 | ret = target_set_trace_notes (trace_user, NULL, NULL); |
| 2900 | |
| 2901 | if (!ret) |
| 2902 | warning (_("Target does not support trace notes, user ignored")); |
| 2903 | } |
| 2904 | |
| 2905 | static void |
| 2906 | set_trace_notes (const char *args, int from_tty, |
| 2907 | struct cmd_list_element *c) |
| 2908 | { |
| 2909 | int ret; |
| 2910 | |
| 2911 | ret = target_set_trace_notes (NULL, trace_notes, NULL); |
| 2912 | |
| 2913 | if (!ret) |
| 2914 | warning (_("Target does not support trace notes, note ignored")); |
| 2915 | } |
| 2916 | |
| 2917 | static void |
| 2918 | set_trace_stop_notes (const char *args, int from_tty, |
| 2919 | struct cmd_list_element *c) |
| 2920 | { |
| 2921 | int ret; |
| 2922 | |
| 2923 | ret = target_set_trace_notes (NULL, NULL, trace_stop_notes); |
| 2924 | |
| 2925 | if (!ret) |
| 2926 | warning (_("Target does not support trace notes, stop note ignored")); |
| 2927 | } |
| 2928 | |
| 2929 | /* Convert the memory pointed to by mem into hex, placing result in buf. |
| 2930 | * Return a pointer to the last char put in buf (null) |
| 2931 | * "stolen" from sparc-stub.c |
| 2932 | */ |
| 2933 | |
| 2934 | static const char hexchars[] = "0123456789abcdef"; |
| 2935 | |
| 2936 | static char * |
| 2937 | mem2hex (gdb_byte *mem, char *buf, int count) |
| 2938 | { |
| 2939 | gdb_byte ch; |
| 2940 | |
| 2941 | while (count-- > 0) |
| 2942 | { |
| 2943 | ch = *mem++; |
| 2944 | |
| 2945 | *buf++ = hexchars[ch >> 4]; |
| 2946 | *buf++ = hexchars[ch & 0xf]; |
| 2947 | } |
| 2948 | |
| 2949 | *buf = 0; |
| 2950 | |
| 2951 | return buf; |
| 2952 | } |
| 2953 | |
| 2954 | int |
| 2955 | get_traceframe_number (void) |
| 2956 | { |
| 2957 | return traceframe_number; |
| 2958 | } |
| 2959 | |
| 2960 | int |
| 2961 | get_tracepoint_number (void) |
| 2962 | { |
| 2963 | return tracepoint_number; |
| 2964 | } |
| 2965 | |
| 2966 | /* Make the traceframe NUM be the current trace frame. Does nothing |
| 2967 | if NUM is already current. */ |
| 2968 | |
| 2969 | void |
| 2970 | set_current_traceframe (int num) |
| 2971 | { |
| 2972 | int newnum; |
| 2973 | |
| 2974 | if (traceframe_number == num) |
| 2975 | { |
| 2976 | /* Nothing to do. */ |
| 2977 | return; |
| 2978 | } |
| 2979 | |
| 2980 | newnum = target_trace_find (tfind_number, num, 0, 0, NULL); |
| 2981 | |
| 2982 | if (newnum != num) |
| 2983 | warning (_("could not change traceframe")); |
| 2984 | |
| 2985 | set_traceframe_num (newnum); |
| 2986 | |
| 2987 | /* Changing the traceframe changes our view of registers and of the |
| 2988 | frame chain. */ |
| 2989 | registers_changed (); |
| 2990 | |
| 2991 | clear_traceframe_info (); |
| 2992 | } |
| 2993 | |
| 2994 | scoped_restore_current_traceframe::scoped_restore_current_traceframe () |
| 2995 | : m_traceframe_number (traceframe_number) |
| 2996 | {} |
| 2997 | |
| 2998 | /* Given a number and address, return an uploaded tracepoint with that |
| 2999 | number, creating if necessary. */ |
| 3000 | |
| 3001 | struct uploaded_tp * |
| 3002 | get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp) |
| 3003 | { |
| 3004 | struct uploaded_tp *utp; |
| 3005 | |
| 3006 | for (utp = *utpp; utp; utp = utp->next) |
| 3007 | if (utp->number == num && utp->addr == addr) |
| 3008 | return utp; |
| 3009 | |
| 3010 | utp = new uploaded_tp; |
| 3011 | utp->number = num; |
| 3012 | utp->addr = addr; |
| 3013 | utp->next = *utpp; |
| 3014 | *utpp = utp; |
| 3015 | |
| 3016 | return utp; |
| 3017 | } |
| 3018 | |
| 3019 | void |
| 3020 | free_uploaded_tps (struct uploaded_tp **utpp) |
| 3021 | { |
| 3022 | struct uploaded_tp *next_one; |
| 3023 | |
| 3024 | while (*utpp) |
| 3025 | { |
| 3026 | next_one = (*utpp)->next; |
| 3027 | delete *utpp; |
| 3028 | *utpp = next_one; |
| 3029 | } |
| 3030 | } |
| 3031 | |
| 3032 | /* Given a number and address, return an uploaded tracepoint with that |
| 3033 | number, creating if necessary. */ |
| 3034 | |
| 3035 | struct uploaded_tsv * |
| 3036 | get_uploaded_tsv (int num, struct uploaded_tsv **utsvp) |
| 3037 | { |
| 3038 | struct uploaded_tsv *utsv; |
| 3039 | |
| 3040 | for (utsv = *utsvp; utsv; utsv = utsv->next) |
| 3041 | if (utsv->number == num) |
| 3042 | return utsv; |
| 3043 | |
| 3044 | utsv = XCNEW (struct uploaded_tsv); |
| 3045 | utsv->number = num; |
| 3046 | utsv->next = *utsvp; |
| 3047 | *utsvp = utsv; |
| 3048 | |
| 3049 | return utsv; |
| 3050 | } |
| 3051 | |
| 3052 | void |
| 3053 | free_uploaded_tsvs (struct uploaded_tsv **utsvp) |
| 3054 | { |
| 3055 | struct uploaded_tsv *next_one; |
| 3056 | |
| 3057 | while (*utsvp) |
| 3058 | { |
| 3059 | next_one = (*utsvp)->next; |
| 3060 | xfree (*utsvp); |
| 3061 | *utsvp = next_one; |
| 3062 | } |
| 3063 | } |
| 3064 | |
| 3065 | /* FIXME this function is heuristic and will miss the cases where the |
| 3066 | conditional is semantically identical but differs in whitespace, |
| 3067 | such as "x == 0" vs "x==0". */ |
| 3068 | |
| 3069 | static int |
| 3070 | cond_string_is_same (char *str1, char *str2) |
| 3071 | { |
| 3072 | if (str1 == NULL || str2 == NULL) |
| 3073 | return (str1 == str2); |
| 3074 | |
| 3075 | return (strcmp (str1, str2) == 0); |
| 3076 | } |
| 3077 | |
| 3078 | /* Look for an existing tracepoint that seems similar enough to the |
| 3079 | uploaded one. Enablement isn't compared, because the user can |
| 3080 | toggle that freely, and may have done so in anticipation of the |
| 3081 | next trace run. Return the location of matched tracepoint. */ |
| 3082 | |
| 3083 | static struct bp_location * |
| 3084 | find_matching_tracepoint_location (struct uploaded_tp *utp) |
| 3085 | { |
| 3086 | struct bp_location *loc; |
| 3087 | |
| 3088 | for (breakpoint *b : all_tracepoints ()) |
| 3089 | { |
| 3090 | struct tracepoint *t = (struct tracepoint *) b; |
| 3091 | |
| 3092 | if (b->type == utp->type |
| 3093 | && t->step_count == utp->step |
| 3094 | && t->pass_count == utp->pass |
| 3095 | && cond_string_is_same (t->cond_string, |
| 3096 | utp->cond_string.get ()) |
| 3097 | /* FIXME also test actions. */ |
| 3098 | ) |
| 3099 | { |
| 3100 | /* Scan the locations for an address match. */ |
| 3101 | for (loc = b->loc; loc; loc = loc->next) |
| 3102 | { |
| 3103 | if (loc->address == utp->addr) |
| 3104 | return loc; |
| 3105 | } |
| 3106 | } |
| 3107 | } |
| 3108 | return NULL; |
| 3109 | } |
| 3110 | |
| 3111 | /* Given a list of tracepoints uploaded from a target, attempt to |
| 3112 | match them up with existing tracepoints, and create new ones if not |
| 3113 | found. */ |
| 3114 | |
| 3115 | void |
| 3116 | merge_uploaded_tracepoints (struct uploaded_tp **uploaded_tps) |
| 3117 | { |
| 3118 | struct uploaded_tp *utp; |
| 3119 | /* A set of tracepoints which are modified. */ |
| 3120 | std::vector<breakpoint *> modified_tp; |
| 3121 | |
| 3122 | /* Look for GDB tracepoints that match up with our uploaded versions. */ |
| 3123 | for (utp = *uploaded_tps; utp; utp = utp->next) |
| 3124 | { |
| 3125 | struct bp_location *loc; |
| 3126 | struct tracepoint *t; |
| 3127 | |
| 3128 | loc = find_matching_tracepoint_location (utp); |
| 3129 | if (loc) |
| 3130 | { |
| 3131 | int found = 0; |
| 3132 | |
| 3133 | /* Mark this location as already inserted. */ |
| 3134 | loc->inserted = 1; |
| 3135 | t = (struct tracepoint *) loc->owner; |
| 3136 | printf_filtered (_("Assuming tracepoint %d is same " |
| 3137 | "as target's tracepoint %d at %s.\n"), |
| 3138 | loc->owner->number, utp->number, |
| 3139 | paddress (loc->gdbarch, utp->addr)); |
| 3140 | |
| 3141 | /* The tracepoint LOC->owner was modified (the location LOC |
| 3142 | was marked as inserted in the target). Save it in |
| 3143 | MODIFIED_TP if not there yet. The 'breakpoint-modified' |
| 3144 | observers will be notified later once for each tracepoint |
| 3145 | saved in MODIFIED_TP. */ |
| 3146 | for (breakpoint *b : modified_tp) |
| 3147 | if (b == loc->owner) |
| 3148 | { |
| 3149 | found = 1; |
| 3150 | break; |
| 3151 | } |
| 3152 | if (!found) |
| 3153 | modified_tp.push_back (loc->owner); |
| 3154 | } |
| 3155 | else |
| 3156 | { |
| 3157 | t = create_tracepoint_from_upload (utp); |
| 3158 | if (t) |
| 3159 | printf_filtered (_("Created tracepoint %d for " |
| 3160 | "target's tracepoint %d at %s.\n"), |
| 3161 | t->number, utp->number, |
| 3162 | paddress (get_current_arch (), utp->addr)); |
| 3163 | else |
| 3164 | printf_filtered (_("Failed to create tracepoint for target's " |
| 3165 | "tracepoint %d at %s, skipping it.\n"), |
| 3166 | utp->number, |
| 3167 | paddress (get_current_arch (), utp->addr)); |
| 3168 | } |
| 3169 | /* Whether found or created, record the number used by the |
| 3170 | target, to help with mapping target tracepoints back to their |
| 3171 | counterparts here. */ |
| 3172 | if (t) |
| 3173 | t->number_on_target = utp->number; |
| 3174 | } |
| 3175 | |
| 3176 | /* Notify 'breakpoint-modified' observer that at least one of B's |
| 3177 | locations was changed. */ |
| 3178 | for (breakpoint *b : modified_tp) |
| 3179 | gdb::observers::breakpoint_modified.notify (b); |
| 3180 | |
| 3181 | free_uploaded_tps (uploaded_tps); |
| 3182 | } |
| 3183 | |
| 3184 | /* Trace state variables don't have much to identify them beyond their |
| 3185 | name, so just use that to detect matches. */ |
| 3186 | |
| 3187 | static struct trace_state_variable * |
| 3188 | find_matching_tsv (struct uploaded_tsv *utsv) |
| 3189 | { |
| 3190 | if (!utsv->name) |
| 3191 | return NULL; |
| 3192 | |
| 3193 | return find_trace_state_variable (utsv->name); |
| 3194 | } |
| 3195 | |
| 3196 | static struct trace_state_variable * |
| 3197 | create_tsv_from_upload (struct uploaded_tsv *utsv) |
| 3198 | { |
| 3199 | const char *namebase; |
| 3200 | std::string buf; |
| 3201 | int try_num = 0; |
| 3202 | struct trace_state_variable *tsv; |
| 3203 | |
| 3204 | if (utsv->name) |
| 3205 | { |
| 3206 | namebase = utsv->name; |
| 3207 | buf = namebase; |
| 3208 | } |
| 3209 | else |
| 3210 | { |
| 3211 | namebase = "__tsv"; |
| 3212 | buf = string_printf ("%s_%d", namebase, try_num++); |
| 3213 | } |
| 3214 | |
| 3215 | /* Fish for a name that is not in use. */ |
| 3216 | /* (should check against all internal vars?) */ |
| 3217 | while (find_trace_state_variable (buf.c_str ())) |
| 3218 | buf = string_printf ("%s_%d", namebase, try_num++); |
| 3219 | |
| 3220 | /* We have an available name, create the variable. */ |
| 3221 | tsv = create_trace_state_variable (buf.c_str ()); |
| 3222 | tsv->initial_value = utsv->initial_value; |
| 3223 | tsv->builtin = utsv->builtin; |
| 3224 | |
| 3225 | gdb::observers::tsv_created.notify (tsv); |
| 3226 | |
| 3227 | return tsv; |
| 3228 | } |
| 3229 | |
| 3230 | /* Given a list of uploaded trace state variables, try to match them |
| 3231 | up with existing variables, or create additional ones. */ |
| 3232 | |
| 3233 | void |
| 3234 | merge_uploaded_trace_state_variables (struct uploaded_tsv **uploaded_tsvs) |
| 3235 | { |
| 3236 | struct uploaded_tsv *utsv; |
| 3237 | int highest; |
| 3238 | |
| 3239 | /* Most likely some numbers will have to be reassigned as part of |
| 3240 | the merge, so clear them all in anticipation. */ |
| 3241 | for (trace_state_variable &tsv : tvariables) |
| 3242 | tsv.number = 0; |
| 3243 | |
| 3244 | for (utsv = *uploaded_tsvs; utsv; utsv = utsv->next) |
| 3245 | { |
| 3246 | struct trace_state_variable *tsv = find_matching_tsv (utsv); |
| 3247 | if (tsv) |
| 3248 | { |
| 3249 | if (info_verbose) |
| 3250 | printf_filtered (_("Assuming trace state variable $%s " |
| 3251 | "is same as target's variable %d.\n"), |
| 3252 | tsv->name.c_str (), utsv->number); |
| 3253 | } |
| 3254 | else |
| 3255 | { |
| 3256 | tsv = create_tsv_from_upload (utsv); |
| 3257 | if (info_verbose) |
| 3258 | printf_filtered (_("Created trace state variable " |
| 3259 | "$%s for target's variable %d.\n"), |
| 3260 | tsv->name.c_str (), utsv->number); |
| 3261 | } |
| 3262 | /* Give precedence to numberings that come from the target. */ |
| 3263 | if (tsv) |
| 3264 | tsv->number = utsv->number; |
| 3265 | } |
| 3266 | |
| 3267 | /* Renumber everything that didn't get a target-assigned number. */ |
| 3268 | highest = 0; |
| 3269 | for (const trace_state_variable &tsv : tvariables) |
| 3270 | highest = std::max (tsv.number, highest); |
| 3271 | |
| 3272 | ++highest; |
| 3273 | for (trace_state_variable &tsv : tvariables) |
| 3274 | if (tsv.number == 0) |
| 3275 | tsv.number = highest++; |
| 3276 | |
| 3277 | free_uploaded_tsvs (uploaded_tsvs); |
| 3278 | } |
| 3279 | |
| 3280 | /* Parse the part of trace status syntax that is shared between |
| 3281 | the remote protocol and the trace file reader. */ |
| 3282 | |
| 3283 | void |
| 3284 | parse_trace_status (const char *line, struct trace_status *ts) |
| 3285 | { |
| 3286 | const char *p = line, *p1, *p2, *p3, *p_temp; |
| 3287 | int end; |
| 3288 | ULONGEST val; |
| 3289 | |
| 3290 | ts->running_known = 1; |
| 3291 | ts->running = (*p++ == '1'); |
| 3292 | ts->stop_reason = trace_stop_reason_unknown; |
| 3293 | xfree (ts->stop_desc); |
| 3294 | ts->stop_desc = NULL; |
| 3295 | ts->traceframe_count = -1; |
| 3296 | ts->traceframes_created = -1; |
| 3297 | ts->buffer_free = -1; |
| 3298 | ts->buffer_size = -1; |
| 3299 | ts->disconnected_tracing = 0; |
| 3300 | ts->circular_buffer = 0; |
| 3301 | xfree (ts->user_name); |
| 3302 | ts->user_name = NULL; |
| 3303 | xfree (ts->notes); |
| 3304 | ts->notes = NULL; |
| 3305 | ts->start_time = ts->stop_time = 0; |
| 3306 | |
| 3307 | while (*p++) |
| 3308 | { |
| 3309 | p1 = strchr (p, ':'); |
| 3310 | if (p1 == NULL) |
| 3311 | error (_("Malformed trace status, at %s\n\ |
| 3312 | Status line: '%s'\n"), p, line); |
| 3313 | p3 = strchr (p, ';'); |
| 3314 | if (p3 == NULL) |
| 3315 | p3 = p + strlen (p); |
| 3316 | if (strncmp (p, stop_reason_names[trace_buffer_full], p1 - p) == 0) |
| 3317 | { |
| 3318 | p = unpack_varlen_hex (++p1, &val); |
| 3319 | ts->stop_reason = trace_buffer_full; |
| 3320 | } |
| 3321 | else if (strncmp (p, stop_reason_names[trace_never_run], p1 - p) == 0) |
| 3322 | { |
| 3323 | p = unpack_varlen_hex (++p1, &val); |
| 3324 | ts->stop_reason = trace_never_run; |
| 3325 | } |
| 3326 | else if (strncmp (p, stop_reason_names[tracepoint_passcount], |
| 3327 | p1 - p) == 0) |
| 3328 | { |
| 3329 | p = unpack_varlen_hex (++p1, &val); |
| 3330 | ts->stop_reason = tracepoint_passcount; |
| 3331 | ts->stopping_tracepoint = val; |
| 3332 | } |
| 3333 | else if (strncmp (p, stop_reason_names[trace_stop_command], p1 - p) == 0) |
| 3334 | { |
| 3335 | p2 = strchr (++p1, ':'); |
| 3336 | if (!p2 || p2 > p3) |
| 3337 | { |
| 3338 | /*older style*/ |
| 3339 | p2 = p1; |
| 3340 | } |
| 3341 | else if (p2 != p1) |
| 3342 | { |
| 3343 | ts->stop_desc = (char *) xmalloc (strlen (line)); |
| 3344 | end = hex2bin (p1, (gdb_byte *) ts->stop_desc, (p2 - p1) / 2); |
| 3345 | ts->stop_desc[end] = '\0'; |
| 3346 | } |
| 3347 | else |
| 3348 | ts->stop_desc = xstrdup (""); |
| 3349 | |
| 3350 | p = unpack_varlen_hex (++p2, &val); |
| 3351 | ts->stop_reason = trace_stop_command; |
| 3352 | } |
| 3353 | else if (strncmp (p, stop_reason_names[trace_disconnected], p1 - p) == 0) |
| 3354 | { |
| 3355 | p = unpack_varlen_hex (++p1, &val); |
| 3356 | ts->stop_reason = trace_disconnected; |
| 3357 | } |
| 3358 | else if (strncmp (p, stop_reason_names[tracepoint_error], p1 - p) == 0) |
| 3359 | { |
| 3360 | p2 = strchr (++p1, ':'); |
| 3361 | if (p2 != p1) |
| 3362 | { |
| 3363 | ts->stop_desc = (char *) xmalloc ((p2 - p1) / 2 + 1); |
| 3364 | end = hex2bin (p1, (gdb_byte *) ts->stop_desc, (p2 - p1) / 2); |
| 3365 | ts->stop_desc[end] = '\0'; |
| 3366 | } |
| 3367 | else |
| 3368 | ts->stop_desc = xstrdup (""); |
| 3369 | |
| 3370 | p = unpack_varlen_hex (++p2, &val); |
| 3371 | ts->stopping_tracepoint = val; |
| 3372 | ts->stop_reason = tracepoint_error; |
| 3373 | } |
| 3374 | else if (strncmp (p, "tframes", p1 - p) == 0) |
| 3375 | { |
| 3376 | p = unpack_varlen_hex (++p1, &val); |
| 3377 | ts->traceframe_count = val; |
| 3378 | } |
| 3379 | else if (strncmp (p, "tcreated", p1 - p) == 0) |
| 3380 | { |
| 3381 | p = unpack_varlen_hex (++p1, &val); |
| 3382 | ts->traceframes_created = val; |
| 3383 | } |
| 3384 | else if (strncmp (p, "tfree", p1 - p) == 0) |
| 3385 | { |
| 3386 | p = unpack_varlen_hex (++p1, &val); |
| 3387 | ts->buffer_free = val; |
| 3388 | } |
| 3389 | else if (strncmp (p, "tsize", p1 - p) == 0) |
| 3390 | { |
| 3391 | p = unpack_varlen_hex (++p1, &val); |
| 3392 | ts->buffer_size = val; |
| 3393 | } |
| 3394 | else if (strncmp (p, "disconn", p1 - p) == 0) |
| 3395 | { |
| 3396 | p = unpack_varlen_hex (++p1, &val); |
| 3397 | ts->disconnected_tracing = val; |
| 3398 | } |
| 3399 | else if (strncmp (p, "circular", p1 - p) == 0) |
| 3400 | { |
| 3401 | p = unpack_varlen_hex (++p1, &val); |
| 3402 | ts->circular_buffer = val; |
| 3403 | } |
| 3404 | else if (strncmp (p, "starttime", p1 - p) == 0) |
| 3405 | { |
| 3406 | p = unpack_varlen_hex (++p1, &val); |
| 3407 | ts->start_time = val; |
| 3408 | } |
| 3409 | else if (strncmp (p, "stoptime", p1 - p) == 0) |
| 3410 | { |
| 3411 | p = unpack_varlen_hex (++p1, &val); |
| 3412 | ts->stop_time = val; |
| 3413 | } |
| 3414 | else if (strncmp (p, "username", p1 - p) == 0) |
| 3415 | { |
| 3416 | ++p1; |
| 3417 | ts->user_name = (char *) xmalloc (strlen (p) / 2); |
| 3418 | end = hex2bin (p1, (gdb_byte *) ts->user_name, (p3 - p1) / 2); |
| 3419 | ts->user_name[end] = '\0'; |
| 3420 | p = p3; |
| 3421 | } |
| 3422 | else if (strncmp (p, "notes", p1 - p) == 0) |
| 3423 | { |
| 3424 | ++p1; |
| 3425 | ts->notes = (char *) xmalloc (strlen (p) / 2); |
| 3426 | end = hex2bin (p1, (gdb_byte *) ts->notes, (p3 - p1) / 2); |
| 3427 | ts->notes[end] = '\0'; |
| 3428 | p = p3; |
| 3429 | } |
| 3430 | else |
| 3431 | { |
| 3432 | /* Silently skip unknown optional info. */ |
| 3433 | p_temp = strchr (p1 + 1, ';'); |
| 3434 | if (p_temp) |
| 3435 | p = p_temp; |
| 3436 | else |
| 3437 | /* Must be at the end. */ |
| 3438 | break; |
| 3439 | } |
| 3440 | } |
| 3441 | } |
| 3442 | |
| 3443 | void |
| 3444 | parse_tracepoint_status (const char *p, struct breakpoint *bp, |
| 3445 | struct uploaded_tp *utp) |
| 3446 | { |
| 3447 | ULONGEST uval; |
| 3448 | struct tracepoint *tp = (struct tracepoint *) bp; |
| 3449 | |
| 3450 | p = unpack_varlen_hex (p, &uval); |
| 3451 | if (tp) |
| 3452 | tp->hit_count += uval; |
| 3453 | else |
| 3454 | utp->hit_count += uval; |
| 3455 | p = unpack_varlen_hex (p + 1, &uval); |
| 3456 | if (tp) |
| 3457 | tp->traceframe_usage += uval; |
| 3458 | else |
| 3459 | utp->traceframe_usage += uval; |
| 3460 | /* Ignore any extra, allowing for future extensions. */ |
| 3461 | } |
| 3462 | |
| 3463 | /* Given a line of text defining a part of a tracepoint, parse it into |
| 3464 | an "uploaded tracepoint". */ |
| 3465 | |
| 3466 | void |
| 3467 | parse_tracepoint_definition (const char *line, struct uploaded_tp **utpp) |
| 3468 | { |
| 3469 | const char *p; |
| 3470 | char piece; |
| 3471 | ULONGEST num, addr, step, pass, orig_size, xlen, start; |
| 3472 | int enabled, end; |
| 3473 | enum bptype type; |
| 3474 | const char *srctype; |
| 3475 | char *buf; |
| 3476 | struct uploaded_tp *utp = NULL; |
| 3477 | |
| 3478 | p = line; |
| 3479 | /* Both tracepoint and action definitions start with the same number |
| 3480 | and address sequence. */ |
| 3481 | piece = *p++; |
| 3482 | p = unpack_varlen_hex (p, &num); |
| 3483 | p++; /* skip a colon */ |
| 3484 | p = unpack_varlen_hex (p, &addr); |
| 3485 | p++; /* skip a colon */ |
| 3486 | if (piece == 'T') |
| 3487 | { |
| 3488 | gdb::unique_xmalloc_ptr<char[]> cond; |
| 3489 | |
| 3490 | enabled = (*p++ == 'E'); |
| 3491 | p++; /* skip a colon */ |
| 3492 | p = unpack_varlen_hex (p, &step); |
| 3493 | p++; /* skip a colon */ |
| 3494 | p = unpack_varlen_hex (p, &pass); |
| 3495 | type = bp_tracepoint; |
| 3496 | /* Thumb through optional fields. */ |
| 3497 | while (*p == ':') |
| 3498 | { |
| 3499 | p++; /* skip a colon */ |
| 3500 | if (*p == 'F') |
| 3501 | { |
| 3502 | type = bp_fast_tracepoint; |
| 3503 | p++; |
| 3504 | p = unpack_varlen_hex (p, &orig_size); |
| 3505 | } |
| 3506 | else if (*p == 'S') |
| 3507 | { |
| 3508 | type = bp_static_tracepoint; |
| 3509 | p++; |
| 3510 | } |
| 3511 | else if (*p == 'X') |
| 3512 | { |
| 3513 | p++; |
| 3514 | p = unpack_varlen_hex (p, &xlen); |
| 3515 | p++; /* skip a comma */ |
| 3516 | cond.reset ((char *) xmalloc (2 * xlen + 1)); |
| 3517 | strncpy (&cond[0], p, 2 * xlen); |
| 3518 | cond[2 * xlen] = '\0'; |
| 3519 | p += 2 * xlen; |
| 3520 | } |
| 3521 | else |
| 3522 | warning (_("Unrecognized char '%c' in tracepoint " |
| 3523 | "definition, skipping rest"), *p); |
| 3524 | } |
| 3525 | utp = get_uploaded_tp (num, addr, utpp); |
| 3526 | utp->type = type; |
| 3527 | utp->enabled = enabled; |
| 3528 | utp->step = step; |
| 3529 | utp->pass = pass; |
| 3530 | utp->cond = std::move (cond); |
| 3531 | } |
| 3532 | else if (piece == 'A') |
| 3533 | { |
| 3534 | utp = get_uploaded_tp (num, addr, utpp); |
| 3535 | utp->actions.emplace_back (xstrdup (p)); |
| 3536 | } |
| 3537 | else if (piece == 'S') |
| 3538 | { |
| 3539 | utp = get_uploaded_tp (num, addr, utpp); |
| 3540 | utp->step_actions.emplace_back (xstrdup (p)); |
| 3541 | } |
| 3542 | else if (piece == 'Z') |
| 3543 | { |
| 3544 | /* Parse a chunk of source form definition. */ |
| 3545 | utp = get_uploaded_tp (num, addr, utpp); |
| 3546 | srctype = p; |
| 3547 | p = strchr (p, ':'); |
| 3548 | p++; /* skip a colon */ |
| 3549 | p = unpack_varlen_hex (p, &start); |
| 3550 | p++; /* skip a colon */ |
| 3551 | p = unpack_varlen_hex (p, &xlen); |
| 3552 | p++; /* skip a colon */ |
| 3553 | |
| 3554 | buf = (char *) alloca (strlen (line)); |
| 3555 | |
| 3556 | end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2); |
| 3557 | buf[end] = '\0'; |
| 3558 | |
| 3559 | if (startswith (srctype, "at:")) |
| 3560 | utp->at_string.reset (xstrdup (buf)); |
| 3561 | else if (startswith (srctype, "cond:")) |
| 3562 | utp->cond_string.reset (xstrdup (buf)); |
| 3563 | else if (startswith (srctype, "cmd:")) |
| 3564 | utp->cmd_strings.emplace_back (xstrdup (buf)); |
| 3565 | } |
| 3566 | else if (piece == 'V') |
| 3567 | { |
| 3568 | utp = get_uploaded_tp (num, addr, utpp); |
| 3569 | |
| 3570 | parse_tracepoint_status (p, NULL, utp); |
| 3571 | } |
| 3572 | else |
| 3573 | { |
| 3574 | /* Don't error out, the target might be sending us optional |
| 3575 | info that we don't care about. */ |
| 3576 | warning (_("Unrecognized tracepoint piece '%c', ignoring"), piece); |
| 3577 | } |
| 3578 | } |
| 3579 | |
| 3580 | /* Convert a textual description of a trace state variable into an |
| 3581 | uploaded object. */ |
| 3582 | |
| 3583 | void |
| 3584 | parse_tsv_definition (const char *line, struct uploaded_tsv **utsvp) |
| 3585 | { |
| 3586 | const char *p; |
| 3587 | char *buf; |
| 3588 | ULONGEST num, initval, builtin; |
| 3589 | int end; |
| 3590 | struct uploaded_tsv *utsv = NULL; |
| 3591 | |
| 3592 | buf = (char *) alloca (strlen (line)); |
| 3593 | |
| 3594 | p = line; |
| 3595 | p = unpack_varlen_hex (p, &num); |
| 3596 | p++; /* skip a colon */ |
| 3597 | p = unpack_varlen_hex (p, &initval); |
| 3598 | p++; /* skip a colon */ |
| 3599 | p = unpack_varlen_hex (p, &builtin); |
| 3600 | p++; /* skip a colon */ |
| 3601 | end = hex2bin (p, (gdb_byte *) buf, strlen (p) / 2); |
| 3602 | buf[end] = '\0'; |
| 3603 | |
| 3604 | utsv = get_uploaded_tsv (num, utsvp); |
| 3605 | utsv->initial_value = initval; |
| 3606 | utsv->builtin = builtin; |
| 3607 | utsv->name = xstrdup (buf); |
| 3608 | } |
| 3609 | |
| 3610 | /* Given a line of text defining a static tracepoint marker, parse it |
| 3611 | into a "static tracepoint marker" object. Throws an error is |
| 3612 | parsing fails. If PP is non-null, it points to one past the end of |
| 3613 | the parsed marker definition. */ |
| 3614 | |
| 3615 | void |
| 3616 | parse_static_tracepoint_marker_definition (const char *line, const char **pp, |
| 3617 | static_tracepoint_marker *marker) |
| 3618 | { |
| 3619 | const char *p, *endp; |
| 3620 | ULONGEST addr; |
| 3621 | |
| 3622 | p = line; |
| 3623 | p = unpack_varlen_hex (p, &addr); |
| 3624 | p++; /* skip a colon */ |
| 3625 | |
| 3626 | marker->gdbarch = target_gdbarch (); |
| 3627 | marker->address = (CORE_ADDR) addr; |
| 3628 | |
| 3629 | endp = strchr (p, ':'); |
| 3630 | if (endp == NULL) |
| 3631 | error (_("bad marker definition: %s"), line); |
| 3632 | |
| 3633 | marker->str_id = hex2str (p, (endp - p) / 2); |
| 3634 | |
| 3635 | p = endp; |
| 3636 | p++; /* skip a colon */ |
| 3637 | |
| 3638 | /* This definition may be followed by another one, separated by a comma. */ |
| 3639 | int hex_len; |
| 3640 | endp = strchr (p, ','); |
| 3641 | if (endp != nullptr) |
| 3642 | hex_len = endp - p; |
| 3643 | else |
| 3644 | hex_len = strlen (p); |
| 3645 | |
| 3646 | marker->extra = hex2str (p, hex_len / 2); |
| 3647 | |
| 3648 | if (pp != nullptr) |
| 3649 | *pp = p + hex_len; |
| 3650 | } |
| 3651 | |
| 3652 | /* Print MARKER to gdb_stdout. */ |
| 3653 | |
| 3654 | static void |
| 3655 | print_one_static_tracepoint_marker (int count, |
| 3656 | const static_tracepoint_marker &marker) |
| 3657 | { |
| 3658 | struct symbol *sym; |
| 3659 | |
| 3660 | char wrap_indent[80]; |
| 3661 | char extra_field_indent[80]; |
| 3662 | struct ui_out *uiout = current_uiout; |
| 3663 | |
| 3664 | symtab_and_line sal; |
| 3665 | sal.pc = marker.address; |
| 3666 | |
| 3667 | std::vector<breakpoint *> tracepoints |
| 3668 | = static_tracepoints_here (marker.address); |
| 3669 | |
| 3670 | ui_out_emit_tuple tuple_emitter (uiout, "marker"); |
| 3671 | |
| 3672 | /* A counter field to help readability. This is not a stable |
| 3673 | identifier! */ |
| 3674 | uiout->field_signed ("count", count); |
| 3675 | |
| 3676 | uiout->field_string ("marker-id", marker.str_id); |
| 3677 | |
| 3678 | uiout->field_fmt ("enabled", "%c", |
| 3679 | !tracepoints.empty () ? 'y' : 'n'); |
| 3680 | uiout->spaces (2); |
| 3681 | |
| 3682 | strcpy (wrap_indent, " "); |
| 3683 | |
| 3684 | if (gdbarch_addr_bit (marker.gdbarch) <= 32) |
| 3685 | strcat (wrap_indent, " "); |
| 3686 | else |
| 3687 | strcat (wrap_indent, " "); |
| 3688 | |
| 3689 | strcpy (extra_field_indent, " "); |
| 3690 | |
| 3691 | uiout->field_core_addr ("addr", marker.gdbarch, marker.address); |
| 3692 | |
| 3693 | sal = find_pc_line (marker.address, 0); |
| 3694 | sym = find_pc_sect_function (marker.address, NULL); |
| 3695 | if (sym) |
| 3696 | { |
| 3697 | uiout->text ("in "); |
| 3698 | uiout->field_string ("func", sym->print_name (), |
| 3699 | function_name_style.style ()); |
| 3700 | uiout->wrap_hint (wrap_indent); |
| 3701 | uiout->text (" at "); |
| 3702 | } |
| 3703 | else |
| 3704 | uiout->field_skip ("func"); |
| 3705 | |
| 3706 | if (sal.symtab != NULL) |
| 3707 | { |
| 3708 | uiout->field_string ("file", |
| 3709 | symtab_to_filename_for_display (sal.symtab), |
| 3710 | file_name_style.style ()); |
| 3711 | uiout->text (":"); |
| 3712 | |
| 3713 | if (uiout->is_mi_like_p ()) |
| 3714 | { |
| 3715 | const char *fullname = symtab_to_fullname (sal.symtab); |
| 3716 | |
| 3717 | uiout->field_string ("fullname", fullname); |
| 3718 | } |
| 3719 | else |
| 3720 | uiout->field_skip ("fullname"); |
| 3721 | |
| 3722 | uiout->field_signed ("line", sal.line); |
| 3723 | } |
| 3724 | else |
| 3725 | { |
| 3726 | uiout->field_skip ("fullname"); |
| 3727 | uiout->field_skip ("line"); |
| 3728 | } |
| 3729 | |
| 3730 | uiout->text ("\n"); |
| 3731 | uiout->text (extra_field_indent); |
| 3732 | uiout->text (_("Data: \"")); |
| 3733 | uiout->field_string ("extra-data", marker.extra); |
| 3734 | uiout->text ("\"\n"); |
| 3735 | |
| 3736 | if (!tracepoints.empty ()) |
| 3737 | { |
| 3738 | int ix; |
| 3739 | |
| 3740 | { |
| 3741 | ui_out_emit_tuple inner_tuple_emitter (uiout, "tracepoints-at"); |
| 3742 | |
| 3743 | uiout->text (extra_field_indent); |
| 3744 | uiout->text (_("Probed by static tracepoints: ")); |
| 3745 | for (ix = 0; ix < tracepoints.size (); ix++) |
| 3746 | { |
| 3747 | if (ix > 0) |
| 3748 | uiout->text (", "); |
| 3749 | uiout->text ("#"); |
| 3750 | uiout->field_signed ("tracepoint-id", tracepoints[ix]->number); |
| 3751 | } |
| 3752 | } |
| 3753 | |
| 3754 | if (uiout->is_mi_like_p ()) |
| 3755 | uiout->field_signed ("number-of-tracepoints", tracepoints.size ()); |
| 3756 | else |
| 3757 | uiout->text ("\n"); |
| 3758 | } |
| 3759 | } |
| 3760 | |
| 3761 | static void |
| 3762 | info_static_tracepoint_markers_command (const char *arg, int from_tty) |
| 3763 | { |
| 3764 | struct ui_out *uiout = current_uiout; |
| 3765 | std::vector<static_tracepoint_marker> markers |
| 3766 | = target_static_tracepoint_markers_by_strid (NULL); |
| 3767 | |
| 3768 | /* We don't have to check target_can_use_agent and agent's capability on |
| 3769 | static tracepoint here, in order to be compatible with older GDBserver. |
| 3770 | We don't check USE_AGENT is true or not, because static tracepoints |
| 3771 | don't work without in-process agent, so we don't bother users to type |
| 3772 | `set agent on' when to use static tracepoint. */ |
| 3773 | |
| 3774 | ui_out_emit_table table_emitter (uiout, 5, -1, |
| 3775 | "StaticTracepointMarkersTable"); |
| 3776 | |
| 3777 | uiout->table_header (7, ui_left, "counter", "Cnt"); |
| 3778 | |
| 3779 | uiout->table_header (40, ui_left, "marker-id", "ID"); |
| 3780 | |
| 3781 | uiout->table_header (3, ui_left, "enabled", "Enb"); |
| 3782 | if (gdbarch_addr_bit (target_gdbarch ()) <= 32) |
| 3783 | uiout->table_header (10, ui_left, "addr", "Address"); |
| 3784 | else |
| 3785 | uiout->table_header (18, ui_left, "addr", "Address"); |
| 3786 | uiout->table_header (40, ui_noalign, "what", "What"); |
| 3787 | |
| 3788 | uiout->table_body (); |
| 3789 | |
| 3790 | for (int i = 0; i < markers.size (); i++) |
| 3791 | print_one_static_tracepoint_marker (i + 1, markers[i]); |
| 3792 | } |
| 3793 | |
| 3794 | /* The $_sdata convenience variable is a bit special. We don't know |
| 3795 | for sure type of the value until we actually have a chance to fetch |
| 3796 | the data --- the size of the object depends on what has been |
| 3797 | collected. We solve this by making $_sdata be an internalvar that |
| 3798 | creates a new value on access. */ |
| 3799 | |
| 3800 | /* Return a new value with the correct type for the sdata object of |
| 3801 | the current trace frame. Return a void value if there's no object |
| 3802 | available. */ |
| 3803 | |
| 3804 | static struct value * |
| 3805 | sdata_make_value (struct gdbarch *gdbarch, struct internalvar *var, |
| 3806 | void *ignore) |
| 3807 | { |
| 3808 | /* We need to read the whole object before we know its size. */ |
| 3809 | gdb::optional<gdb::byte_vector> buf |
| 3810 | = target_read_alloc (current_inferior ()->top_target (), |
| 3811 | TARGET_OBJECT_STATIC_TRACE_DATA, |
| 3812 | NULL); |
| 3813 | if (buf) |
| 3814 | { |
| 3815 | struct value *v; |
| 3816 | struct type *type; |
| 3817 | |
| 3818 | type = init_vector_type (builtin_type (gdbarch)->builtin_true_char, |
| 3819 | buf->size ()); |
| 3820 | v = allocate_value (type); |
| 3821 | memcpy (value_contents_raw (v), buf->data (), buf->size ()); |
| 3822 | return v; |
| 3823 | } |
| 3824 | else |
| 3825 | return allocate_value (builtin_type (gdbarch)->builtin_void); |
| 3826 | } |
| 3827 | |
| 3828 | #if !defined(HAVE_LIBEXPAT) |
| 3829 | |
| 3830 | struct std::unique_ptr<traceframe_info> |
| 3831 | parse_traceframe_info (const char *tframe_info) |
| 3832 | { |
| 3833 | static int have_warned; |
| 3834 | |
| 3835 | if (!have_warned) |
| 3836 | { |
| 3837 | have_warned = 1; |
| 3838 | warning (_("Can not parse XML trace frame info; XML support " |
| 3839 | "was disabled at compile time")); |
| 3840 | } |
| 3841 | |
| 3842 | return NULL; |
| 3843 | } |
| 3844 | |
| 3845 | #else /* HAVE_LIBEXPAT */ |
| 3846 | |
| 3847 | #include "xml-support.h" |
| 3848 | |
| 3849 | /* Handle the start of a <memory> element. */ |
| 3850 | |
| 3851 | static void |
| 3852 | traceframe_info_start_memory (struct gdb_xml_parser *parser, |
| 3853 | const struct gdb_xml_element *element, |
| 3854 | void *user_data, |
| 3855 | std::vector<gdb_xml_value> &attributes) |
| 3856 | { |
| 3857 | struct traceframe_info *info = (struct traceframe_info *) user_data; |
| 3858 | ULONGEST *start_p, *length_p; |
| 3859 | |
| 3860 | start_p |
| 3861 | = (ULONGEST *) xml_find_attribute (attributes, "start")->value.get (); |
| 3862 | length_p |
| 3863 | = (ULONGEST *) xml_find_attribute (attributes, "length")->value.get (); |
| 3864 | |
| 3865 | info->memory.emplace_back (*start_p, *length_p); |
| 3866 | } |
| 3867 | |
| 3868 | /* Handle the start of a <tvar> element. */ |
| 3869 | |
| 3870 | static void |
| 3871 | traceframe_info_start_tvar (struct gdb_xml_parser *parser, |
| 3872 | const struct gdb_xml_element *element, |
| 3873 | void *user_data, |
| 3874 | std::vector<gdb_xml_value> &attributes) |
| 3875 | { |
| 3876 | struct traceframe_info *info = (struct traceframe_info *) user_data; |
| 3877 | const char *id_attrib |
| 3878 | = (const char *) xml_find_attribute (attributes, "id")->value.get (); |
| 3879 | int id = gdb_xml_parse_ulongest (parser, id_attrib); |
| 3880 | |
| 3881 | info->tvars.push_back (id); |
| 3882 | } |
| 3883 | |
| 3884 | /* The allowed elements and attributes for an XML memory map. */ |
| 3885 | |
| 3886 | static const struct gdb_xml_attribute memory_attributes[] = { |
| 3887 | { "start", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, |
| 3888 | { "length", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, |
| 3889 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
| 3890 | }; |
| 3891 | |
| 3892 | static const struct gdb_xml_attribute tvar_attributes[] = { |
| 3893 | { "id", GDB_XML_AF_NONE, NULL, NULL }, |
| 3894 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
| 3895 | }; |
| 3896 | |
| 3897 | static const struct gdb_xml_element traceframe_info_children[] = { |
| 3898 | { "memory", memory_attributes, NULL, |
| 3899 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, |
| 3900 | traceframe_info_start_memory, NULL }, |
| 3901 | { "tvar", tvar_attributes, NULL, |
| 3902 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, |
| 3903 | traceframe_info_start_tvar, NULL }, |
| 3904 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } |
| 3905 | }; |
| 3906 | |
| 3907 | static const struct gdb_xml_element traceframe_info_elements[] = { |
| 3908 | { "traceframe-info", NULL, traceframe_info_children, GDB_XML_EF_NONE, |
| 3909 | NULL, NULL }, |
| 3910 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } |
| 3911 | }; |
| 3912 | |
| 3913 | /* Parse a traceframe-info XML document. */ |
| 3914 | |
| 3915 | traceframe_info_up |
| 3916 | parse_traceframe_info (const char *tframe_info) |
| 3917 | { |
| 3918 | traceframe_info_up result (new traceframe_info); |
| 3919 | |
| 3920 | if (gdb_xml_parse_quick (_("trace frame info"), |
| 3921 | "traceframe-info.dtd", traceframe_info_elements, |
| 3922 | tframe_info, result.get ()) == 0) |
| 3923 | return result; |
| 3924 | |
| 3925 | return NULL; |
| 3926 | } |
| 3927 | |
| 3928 | #endif /* HAVE_LIBEXPAT */ |
| 3929 | |
| 3930 | /* Returns the traceframe_info object for the current traceframe. |
| 3931 | This is where we avoid re-fetching the object from the target if we |
| 3932 | already have it cached. */ |
| 3933 | |
| 3934 | struct traceframe_info * |
| 3935 | get_traceframe_info (void) |
| 3936 | { |
| 3937 | if (current_traceframe_info == NULL) |
| 3938 | current_traceframe_info = target_traceframe_info (); |
| 3939 | |
| 3940 | return current_traceframe_info.get (); |
| 3941 | } |
| 3942 | |
| 3943 | /* If the target supports the query, return in RESULT the set of |
| 3944 | collected memory in the current traceframe, found within the LEN |
| 3945 | bytes range starting at MEMADDR. Returns true if the target |
| 3946 | supports the query, otherwise returns false, and RESULT is left |
| 3947 | undefined. */ |
| 3948 | |
| 3949 | int |
| 3950 | traceframe_available_memory (std::vector<mem_range> *result, |
| 3951 | CORE_ADDR memaddr, ULONGEST len) |
| 3952 | { |
| 3953 | struct traceframe_info *info = get_traceframe_info (); |
| 3954 | |
| 3955 | if (info != NULL) |
| 3956 | { |
| 3957 | result->clear (); |
| 3958 | |
| 3959 | for (mem_range &r : info->memory) |
| 3960 | if (mem_ranges_overlap (r.start, r.length, memaddr, len)) |
| 3961 | { |
| 3962 | ULONGEST lo1, hi1, lo2, hi2; |
| 3963 | |
| 3964 | lo1 = memaddr; |
| 3965 | hi1 = memaddr + len; |
| 3966 | |
| 3967 | lo2 = r.start; |
| 3968 | hi2 = r.start + r.length; |
| 3969 | |
| 3970 | CORE_ADDR start = std::max (lo1, lo2); |
| 3971 | int length = std::min (hi1, hi2) - start; |
| 3972 | |
| 3973 | result->emplace_back (start, length); |
| 3974 | } |
| 3975 | |
| 3976 | normalize_mem_ranges (result); |
| 3977 | return 1; |
| 3978 | } |
| 3979 | |
| 3980 | return 0; |
| 3981 | } |
| 3982 | |
| 3983 | /* Implementation of `sdata' variable. */ |
| 3984 | |
| 3985 | static const struct internalvar_funcs sdata_funcs = |
| 3986 | { |
| 3987 | sdata_make_value, |
| 3988 | NULL, |
| 3989 | NULL |
| 3990 | }; |
| 3991 | |
| 3992 | /* See tracepoint.h. */ |
| 3993 | cmd_list_element *while_stepping_cmd_element = nullptr; |
| 3994 | |
| 3995 | /* module initialization */ |
| 3996 | void _initialize_tracepoint (); |
| 3997 | void |
| 3998 | _initialize_tracepoint () |
| 3999 | { |
| 4000 | struct cmd_list_element *c; |
| 4001 | |
| 4002 | /* Explicitly create without lookup, since that tries to create a |
| 4003 | value with a void typed value, and when we get here, gdbarch |
| 4004 | isn't initialized yet. At this point, we're quite sure there |
| 4005 | isn't another convenience variable of the same name. */ |
| 4006 | create_internalvar_type_lazy ("_sdata", &sdata_funcs, NULL); |
| 4007 | |
| 4008 | traceframe_number = -1; |
| 4009 | tracepoint_number = -1; |
| 4010 | |
| 4011 | add_info ("scope", info_scope_command, |
| 4012 | _("List the variables local to a scope.")); |
| 4013 | |
| 4014 | add_cmd ("tracepoints", class_trace, |
| 4015 | _("Tracing of program execution without stopping the program."), |
| 4016 | &cmdlist); |
| 4017 | |
| 4018 | add_com ("tdump", class_trace, tdump_command, |
| 4019 | _("Print everything collected at the current tracepoint.")); |
| 4020 | |
| 4021 | c = add_com ("tvariable", class_trace, trace_variable_command,_("\ |
| 4022 | Define a trace state variable.\n\ |
| 4023 | Argument is a $-prefixed name, optionally followed\n\ |
| 4024 | by '=' and an expression that sets the initial value\n\ |
| 4025 | at the start of tracing.")); |
| 4026 | set_cmd_completer (c, expression_completer); |
| 4027 | |
| 4028 | add_cmd ("tvariable", class_trace, delete_trace_variable_command, _("\ |
| 4029 | Delete one or more trace state variables.\n\ |
| 4030 | Arguments are the names of the variables to delete.\n\ |
| 4031 | If no arguments are supplied, delete all variables."), &deletelist); |
| 4032 | /* FIXME add a trace variable completer. */ |
| 4033 | |
| 4034 | add_info ("tvariables", info_tvariables_command, _("\ |
| 4035 | Status of trace state variables and their values.")); |
| 4036 | |
| 4037 | add_info ("static-tracepoint-markers", |
| 4038 | info_static_tracepoint_markers_command, _("\ |
| 4039 | List target static tracepoints markers.")); |
| 4040 | |
| 4041 | add_prefix_cmd ("tfind", class_trace, tfind_command, _("\ |
| 4042 | Select a trace frame.\n\ |
| 4043 | No argument means forward by one frame; '-' means backward by one frame."), |
| 4044 | &tfindlist, 1, &cmdlist); |
| 4045 | |
| 4046 | add_cmd ("outside", class_trace, tfind_outside_command, _("\ |
| 4047 | Select a trace frame whose PC is outside the given range (exclusive).\n\ |
| 4048 | Usage: tfind outside ADDR1, ADDR2"), |
| 4049 | &tfindlist); |
| 4050 | |
| 4051 | add_cmd ("range", class_trace, tfind_range_command, _("\ |
| 4052 | Select a trace frame whose PC is in the given range (inclusive).\n\ |
| 4053 | Usage: tfind range ADDR1, ADDR2"), |
| 4054 | &tfindlist); |
| 4055 | |
| 4056 | add_cmd ("line", class_trace, tfind_line_command, _("\ |
| 4057 | Select a trace frame by source line.\n\ |
| 4058 | Argument can be a line number (with optional source file),\n\ |
| 4059 | a function name, or '*' followed by an address.\n\ |
| 4060 | Default argument is 'the next source line that was traced'."), |
| 4061 | &tfindlist); |
| 4062 | |
| 4063 | add_cmd ("tracepoint", class_trace, tfind_tracepoint_command, _("\ |
| 4064 | Select a trace frame by tracepoint number.\n\ |
| 4065 | Default is the tracepoint for the current trace frame."), |
| 4066 | &tfindlist); |
| 4067 | |
| 4068 | add_cmd ("pc", class_trace, tfind_pc_command, _("\ |
| 4069 | Select a trace frame by PC.\n\ |
| 4070 | Default is the current PC, or the PC of the current trace frame."), |
| 4071 | &tfindlist); |
| 4072 | |
| 4073 | cmd_list_element *tfind_end_cmd |
| 4074 | = add_cmd ("end", class_trace, tfind_end_command, _("\ |
| 4075 | De-select any trace frame and resume 'live' debugging."), &tfindlist); |
| 4076 | |
| 4077 | add_alias_cmd ("none", tfind_end_cmd, class_trace, 0, &tfindlist); |
| 4078 | |
| 4079 | add_cmd ("start", class_trace, tfind_start_command, |
| 4080 | _("Select the first trace frame in the trace buffer."), |
| 4081 | &tfindlist); |
| 4082 | |
| 4083 | add_com ("tstatus", class_trace, tstatus_command, |
| 4084 | _("Display the status of the current trace data collection.")); |
| 4085 | |
| 4086 | add_com ("tstop", class_trace, tstop_command, _("\ |
| 4087 | Stop trace data collection.\n\ |
| 4088 | Usage: tstop [NOTES]...\n\ |
| 4089 | Any arguments supplied are recorded with the trace as a stop reason and\n\ |
| 4090 | reported by tstatus (if the target supports trace notes).")); |
| 4091 | |
| 4092 | add_com ("tstart", class_trace, tstart_command, _("\ |
| 4093 | Start trace data collection.\n\ |
| 4094 | Usage: tstart [NOTES]...\n\ |
| 4095 | Any arguments supplied are recorded with the trace as a note and\n\ |
| 4096 | reported by tstatus (if the target supports trace notes).")); |
| 4097 | |
| 4098 | add_com ("end", class_trace, end_actions_pseudocommand, _("\ |
| 4099 | Ends a list of commands or actions.\n\ |
| 4100 | Several GDB commands allow you to enter a list of commands or actions.\n\ |
| 4101 | Entering \"end\" on a line by itself is the normal way to terminate\n\ |
| 4102 | such a list.\n\n\ |
| 4103 | Note: the \"end\" command cannot be used at the gdb prompt.")); |
| 4104 | |
| 4105 | while_stepping_cmd_element = add_com ("while-stepping", class_trace, |
| 4106 | while_stepping_pseudocommand, _("\ |
| 4107 | Specify single-stepping behavior at a tracepoint.\n\ |
| 4108 | Argument is number of instructions to trace in single-step mode\n\ |
| 4109 | following the tracepoint. This command is normally followed by\n\ |
| 4110 | one or more \"collect\" commands, to specify what to collect\n\ |
| 4111 | while single-stepping.\n\n\ |
| 4112 | Note: this command can only be used in a tracepoint \"actions\" list.")); |
| 4113 | |
| 4114 | add_com_alias ("ws", while_stepping_cmd_element, class_trace, 0); |
| 4115 | add_com_alias ("stepping", while_stepping_cmd_element, class_trace, 0); |
| 4116 | |
| 4117 | add_com ("collect", class_trace, collect_pseudocommand, _("\ |
| 4118 | Specify one or more data items to be collected at a tracepoint.\n\ |
| 4119 | Accepts a comma-separated list of (one or more) expressions. GDB will\n\ |
| 4120 | collect all data (variables, registers) referenced by that expression.\n\ |
| 4121 | Also accepts the following special arguments:\n\ |
| 4122 | $regs -- all registers.\n\ |
| 4123 | $args -- all function arguments.\n\ |
| 4124 | $locals -- all variables local to the block/function scope.\n\ |
| 4125 | $_sdata -- static tracepoint data (ignored for non-static tracepoints).\n\ |
| 4126 | Note: this command can only be used in a tracepoint \"actions\" list.")); |
| 4127 | |
| 4128 | add_com ("teval", class_trace, teval_pseudocommand, _("\ |
| 4129 | Specify one or more expressions to be evaluated at a tracepoint.\n\ |
| 4130 | Accepts a comma-separated list of (one or more) expressions.\n\ |
| 4131 | The result of each evaluation will be discarded.\n\ |
| 4132 | Note: this command can only be used in a tracepoint \"actions\" list.")); |
| 4133 | |
| 4134 | add_com ("actions", class_trace, actions_command, _("\ |
| 4135 | Specify the actions to be taken at a tracepoint.\n\ |
| 4136 | Tracepoint actions may include collecting of specified data,\n\ |
| 4137 | single-stepping, or enabling/disabling other tracepoints,\n\ |
| 4138 | depending on target's capabilities.")); |
| 4139 | |
| 4140 | default_collect = xstrdup (""); |
| 4141 | add_setshow_string_cmd ("default-collect", class_trace, |
| 4142 | &default_collect, _("\ |
| 4143 | Set the list of expressions to collect by default."), _("\ |
| 4144 | Show the list of expressions to collect by default."), NULL, |
| 4145 | NULL, NULL, |
| 4146 | &setlist, &showlist); |
| 4147 | |
| 4148 | add_setshow_boolean_cmd ("disconnected-tracing", no_class, |
| 4149 | &disconnected_tracing, _("\ |
| 4150 | Set whether tracing continues after GDB disconnects."), _("\ |
| 4151 | Show whether tracing continues after GDB disconnects."), _("\ |
| 4152 | Use this to continue a tracing run even if GDB disconnects\n\ |
| 4153 | or detaches from the target. You can reconnect later and look at\n\ |
| 4154 | trace data collected in the meantime."), |
| 4155 | set_disconnected_tracing, |
| 4156 | NULL, |
| 4157 | &setlist, |
| 4158 | &showlist); |
| 4159 | |
| 4160 | add_setshow_boolean_cmd ("circular-trace-buffer", no_class, |
| 4161 | &circular_trace_buffer, _("\ |
| 4162 | Set target's use of circular trace buffer."), _("\ |
| 4163 | Show target's use of circular trace buffer."), _("\ |
| 4164 | Use this to make the trace buffer into a circular buffer,\n\ |
| 4165 | which will discard traceframes (oldest first) instead of filling\n\ |
| 4166 | up and stopping the trace run."), |
| 4167 | set_circular_trace_buffer, |
| 4168 | NULL, |
| 4169 | &setlist, |
| 4170 | &showlist); |
| 4171 | |
| 4172 | add_setshow_zuinteger_unlimited_cmd ("trace-buffer-size", no_class, |
| 4173 | &trace_buffer_size, _("\ |
| 4174 | Set requested size of trace buffer."), _("\ |
| 4175 | Show requested size of trace buffer."), _("\ |
| 4176 | Use this to choose a size for the trace buffer. Some targets\n\ |
| 4177 | may have fixed or limited buffer sizes. Specifying \"unlimited\" or -1\n\ |
| 4178 | disables any attempt to set the buffer size and lets the target choose."), |
| 4179 | set_trace_buffer_size, NULL, |
| 4180 | &setlist, &showlist); |
| 4181 | |
| 4182 | add_setshow_string_cmd ("trace-user", class_trace, |
| 4183 | &trace_user, _("\ |
| 4184 | Set the user name to use for current and future trace runs."), _("\ |
| 4185 | Show the user name to use for current and future trace runs."), NULL, |
| 4186 | set_trace_user, NULL, |
| 4187 | &setlist, &showlist); |
| 4188 | |
| 4189 | add_setshow_string_cmd ("trace-notes", class_trace, |
| 4190 | &trace_notes, _("\ |
| 4191 | Set notes string to use for current and future trace runs."), _("\ |
| 4192 | Show the notes string to use for current and future trace runs."), NULL, |
| 4193 | set_trace_notes, NULL, |
| 4194 | &setlist, &showlist); |
| 4195 | |
| 4196 | add_setshow_string_cmd ("trace-stop-notes", class_trace, |
| 4197 | &trace_stop_notes, _("\ |
| 4198 | Set notes string to use for future tstop commands."), _("\ |
| 4199 | Show the notes string to use for future tstop commands."), NULL, |
| 4200 | set_trace_stop_notes, NULL, |
| 4201 | &setlist, &showlist); |
| 4202 | } |