| 1 | /* Tracing functionality for remote targets in custom GDB protocol |
| 2 | Copyright 1997 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "symtab.h" |
| 22 | #include "frame.h" |
| 23 | #include "tracepoint.h" |
| 24 | #include "gdbtypes.h" |
| 25 | #include "expression.h" |
| 26 | #include "gdbcmd.h" |
| 27 | #include "value.h" |
| 28 | #include "target.h" |
| 29 | #include "language.h" |
| 30 | #include "gdb_string.h" |
| 31 | |
| 32 | /* readline include files */ |
| 33 | #include "readline.h" |
| 34 | #include "history.h" |
| 35 | |
| 36 | /* readline defines this. */ |
| 37 | #undef savestring |
| 38 | |
| 39 | #ifdef HAVE_UNISTD_H |
| 40 | #include <unistd.h> |
| 41 | #endif |
| 42 | |
| 43 | extern int info_verbose; |
| 44 | extern void (*readline_begin_hook) PARAMS ((char *, ...)); |
| 45 | extern char * (*readline_hook) PARAMS ((char *)); |
| 46 | extern void (*readline_end_hook) PARAMS ((void)); |
| 47 | extern void x_command PARAMS ((char *, int)); |
| 48 | |
| 49 | /* If this definition isn't overridden by the header files, assume |
| 50 | that isatty and fileno exist on this system. */ |
| 51 | #ifndef ISATTY |
| 52 | #define ISATTY(FP) (isatty (fileno (FP))) |
| 53 | #endif |
| 54 | |
| 55 | /* |
| 56 | Tracepoint.c: |
| 57 | |
| 58 | This module defines the following debugger commands: |
| 59 | trace : set a tracepoint on a function, line, or address. |
| 60 | info trace : list all debugger-defined tracepoints. |
| 61 | delete trace : delete one or more tracepoints. |
| 62 | enable trace : enable one or more tracepoints. |
| 63 | disable trace : disable one or more tracepoints. |
| 64 | actions : specify actions to be taken at a tracepoint. |
| 65 | passcount : specify a pass count for a tracepoint. |
| 66 | tstart : start a trace experiment. |
| 67 | tstop : stop a trace experiment. |
| 68 | tstatus : query the status of a trace experiment. |
| 69 | tfind : find a trace frame in the trace buffer. |
| 70 | tdump : print everything collected at the current tracepoint. |
| 71 | save-tracepoints : write tracepoint setup into a file. |
| 72 | |
| 73 | This module defines the following user-visible debugger variables: |
| 74 | $trace_frame : sequence number of trace frame currently being debugged. |
| 75 | $trace_line : source line of trace frame currently being debugged. |
| 76 | $trace_file : source file of trace frame currently being debugged. |
| 77 | $tracepoint : tracepoint number of trace frame currently being debugged. |
| 78 | */ |
| 79 | |
| 80 | |
| 81 | /* ======= Important global variables: ======= */ |
| 82 | |
| 83 | /* Chain of all tracepoints defined. */ |
| 84 | struct tracepoint *tracepoint_chain; |
| 85 | |
| 86 | /* Number of last tracepoint made. */ |
| 87 | static int tracepoint_count; |
| 88 | |
| 89 | /* Number of last traceframe collected. */ |
| 90 | static int traceframe_number; |
| 91 | |
| 92 | /* Tracepoint for last traceframe collected. */ |
| 93 | static int tracepoint_number; |
| 94 | |
| 95 | /* Symbol for function for last traceframe collected */ |
| 96 | static struct symbol *traceframe_fun; |
| 97 | |
| 98 | /* Symtab and line for last traceframe collected */ |
| 99 | static struct symtab_and_line traceframe_sal; |
| 100 | |
| 101 | /* Tracing command lists */ |
| 102 | static struct cmd_list_element *tfindlist; |
| 103 | |
| 104 | /* ======= Important command functions: ======= */ |
| 105 | static void trace_command PARAMS ((char *, int)); |
| 106 | static void tracepoints_info PARAMS ((char *, int)); |
| 107 | static void delete_trace_command PARAMS ((char *, int)); |
| 108 | static void enable_trace_command PARAMS ((char *, int)); |
| 109 | static void disable_trace_command PARAMS ((char *, int)); |
| 110 | static void trace_pass_command PARAMS ((char *, int)); |
| 111 | static void trace_actions_command PARAMS ((char *, int)); |
| 112 | static void trace_start_command PARAMS ((char *, int)); |
| 113 | static void trace_stop_command PARAMS ((char *, int)); |
| 114 | static void trace_status_command PARAMS ((char *, int)); |
| 115 | static void trace_find_command PARAMS ((char *, int)); |
| 116 | static void trace_find_pc_command PARAMS ((char *, int)); |
| 117 | static void trace_find_tracepoint_command PARAMS ((char *, int)); |
| 118 | static void trace_find_line_command PARAMS ((char *, int)); |
| 119 | static void trace_find_range_command PARAMS ((char *, int)); |
| 120 | static void trace_find_outside_command PARAMS ((char *, int)); |
| 121 | static void tracepoint_save_command PARAMS ((char *, int)); |
| 122 | static void trace_dump_command PARAMS ((char *, int)); |
| 123 | |
| 124 | |
| 125 | /* Utility: returns true if "target remote" */ |
| 126 | static int |
| 127 | target_is_remote () |
| 128 | { |
| 129 | if (current_target.to_shortname && |
| 130 | strcmp (current_target.to_shortname, "remote") == 0) |
| 131 | return 1; |
| 132 | else |
| 133 | return 0; |
| 134 | } |
| 135 | |
| 136 | /* Utility: generate error from an incoming stub packet. */ |
| 137 | static void |
| 138 | trace_error (buf) |
| 139 | char *buf; |
| 140 | { |
| 141 | if (*buf++ != 'E') |
| 142 | return; /* not an error msg */ |
| 143 | switch (*buf) |
| 144 | { |
| 145 | case '1': /* malformed packet error */ |
| 146 | if (*++buf == '0') /* general case: */ |
| 147 | error ("tracepoint.c: error in outgoing packet."); |
| 148 | else |
| 149 | error ("tracepoint.c: error in outgoing packet at field #%d.", |
| 150 | strtol (buf, NULL, 16)); |
| 151 | case '2': |
| 152 | error ("trace API error 0x%s.", ++buf); |
| 153 | default: |
| 154 | error ("Target returns error code '%s'.", buf); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | /* Utility: wait for reply from stub, while accepting "O" packets */ |
| 159 | static char * |
| 160 | remote_get_noisy_reply (buf) |
| 161 | char *buf; |
| 162 | { |
| 163 | do /* loop on reply from remote stub */ |
| 164 | { |
| 165 | getpkt (buf, 0); |
| 166 | if (buf[0] == 0) |
| 167 | error ("Target does not support this command."); |
| 168 | else if (buf[0] == 'E') |
| 169 | trace_error (buf); |
| 170 | else if (buf[0] == 'O' && |
| 171 | buf[1] != 'K') |
| 172 | remote_console_output (buf + 1); /* 'O' message from stub */ |
| 173 | else |
| 174 | return buf; /* here's the actual reply */ |
| 175 | } while (1); |
| 176 | } |
| 177 | |
| 178 | /* Set tracepoint count to NUM. */ |
| 179 | static void |
| 180 | set_tracepoint_count (num) |
| 181 | int num; |
| 182 | { |
| 183 | tracepoint_count = num; |
| 184 | set_internalvar (lookup_internalvar ("tpnum"), |
| 185 | value_from_longest (builtin_type_int, (LONGEST) num)); |
| 186 | } |
| 187 | |
| 188 | /* Set traceframe number to NUM. */ |
| 189 | static void |
| 190 | set_traceframe_num (num) |
| 191 | int num; |
| 192 | { |
| 193 | traceframe_number = num; |
| 194 | set_internalvar (lookup_internalvar ("trace_frame"), |
| 195 | value_from_longest (builtin_type_int, (LONGEST) num)); |
| 196 | } |
| 197 | |
| 198 | /* Set tracepoint number to NUM. */ |
| 199 | static void |
| 200 | set_tracepoint_num (num) |
| 201 | int num; |
| 202 | { |
| 203 | tracepoint_number = num; |
| 204 | set_internalvar (lookup_internalvar ("tracepoint"), |
| 205 | value_from_longest (builtin_type_int, (LONGEST) num)); |
| 206 | } |
| 207 | |
| 208 | /* Set externally visible debug variables for querying/printing |
| 209 | the traceframe context (line, function, file) */ |
| 210 | |
| 211 | static void |
| 212 | set_traceframe_context (trace_pc) |
| 213 | CORE_ADDR trace_pc; |
| 214 | { |
| 215 | static struct type *func_string, *file_string; |
| 216 | static struct type *func_range, *file_range; |
| 217 | static value_ptr func_val, file_val; |
| 218 | static struct type *charstar; |
| 219 | int len; |
| 220 | |
| 221 | if (charstar == (struct type *) NULL) |
| 222 | charstar = lookup_pointer_type (builtin_type_char); |
| 223 | |
| 224 | if (trace_pc == -1) /* cease debugging any trace buffers */ |
| 225 | { |
| 226 | traceframe_fun = 0; |
| 227 | traceframe_sal.pc = traceframe_sal.line = 0; |
| 228 | traceframe_sal.symtab = NULL; |
| 229 | set_internalvar (lookup_internalvar ("trace_func"), |
| 230 | value_from_longest (charstar, (LONGEST) 0)); |
| 231 | set_internalvar (lookup_internalvar ("trace_file"), |
| 232 | value_from_longest (charstar, (LONGEST) 0)); |
| 233 | set_internalvar (lookup_internalvar ("trace_line"), |
| 234 | value_from_longest (builtin_type_int, (LONGEST) -1)); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | /* save as globals for internal use */ |
| 239 | traceframe_sal = find_pc_line (trace_pc, 0); |
| 240 | traceframe_fun = find_pc_function (trace_pc); |
| 241 | |
| 242 | /* save linenumber as "$trace_line", a debugger variable visible to users */ |
| 243 | set_internalvar (lookup_internalvar ("trace_line"), |
| 244 | value_from_longest (builtin_type_int, |
| 245 | (LONGEST) traceframe_sal.line)); |
| 246 | |
| 247 | /* save func name as "$trace_func", a debugger variable visible to users */ |
| 248 | if (traceframe_fun == NULL || |
| 249 | SYMBOL_NAME (traceframe_fun) == NULL) |
| 250 | set_internalvar (lookup_internalvar ("trace_func"), |
| 251 | value_from_longest (charstar, (LONGEST) 0)); |
| 252 | else |
| 253 | { |
| 254 | len = strlen (SYMBOL_NAME (traceframe_fun)); |
| 255 | func_range = create_range_type (func_range, |
| 256 | builtin_type_int, 0, len - 1); |
| 257 | func_string = create_array_type (func_string, |
| 258 | builtin_type_char, func_range); |
| 259 | func_val = allocate_value (func_string); |
| 260 | VALUE_TYPE (func_val) = func_string; |
| 261 | memcpy (VALUE_CONTENTS_RAW (func_val), |
| 262 | SYMBOL_NAME (traceframe_fun), |
| 263 | len); |
| 264 | func_val->modifiable = 0; |
| 265 | set_internalvar (lookup_internalvar ("trace_func"), func_val); |
| 266 | } |
| 267 | |
| 268 | /* save file name as "$trace_file", a debugger variable visible to users */ |
| 269 | if (traceframe_sal.symtab == NULL || |
| 270 | traceframe_sal.symtab->filename == NULL) |
| 271 | set_internalvar (lookup_internalvar ("trace_file"), |
| 272 | value_from_longest (charstar, (LONGEST) 0)); |
| 273 | else |
| 274 | { |
| 275 | len = strlen (traceframe_sal.symtab->filename); |
| 276 | file_range = create_range_type (file_range, |
| 277 | builtin_type_int, 0, len - 1); |
| 278 | file_string = create_array_type (file_string, |
| 279 | builtin_type_char, file_range); |
| 280 | file_val = allocate_value (file_string); |
| 281 | VALUE_TYPE (file_val) = file_string; |
| 282 | memcpy (VALUE_CONTENTS_RAW (file_val), |
| 283 | traceframe_sal.symtab->filename, |
| 284 | len); |
| 285 | file_val->modifiable = 0; |
| 286 | set_internalvar (lookup_internalvar ("trace_file"), file_val); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | /* Low level routine to set a tracepoint. |
| 291 | Returns the tracepoint object so caller can set other things. |
| 292 | Does not set the tracepoint number! |
| 293 | Does not print anything. |
| 294 | |
| 295 | ==> This routine should not be called if there is a chance of later |
| 296 | error(); otherwise it leaves a bogus tracepoint on the chain. Validate |
| 297 | your arguments BEFORE calling this routine! */ |
| 298 | |
| 299 | static struct tracepoint * |
| 300 | set_raw_tracepoint (sal) |
| 301 | struct symtab_and_line sal; |
| 302 | { |
| 303 | register struct tracepoint *t, *tc; |
| 304 | struct cleanup *old_chain; |
| 305 | |
| 306 | t = (struct tracepoint *) xmalloc (sizeof (struct tracepoint)); |
| 307 | old_chain = make_cleanup (free, t); |
| 308 | memset (t, 0, sizeof (*t)); |
| 309 | t->address = sal.pc; |
| 310 | if (sal.symtab == NULL) |
| 311 | t->source_file = NULL; |
| 312 | else |
| 313 | { |
| 314 | char *p; |
| 315 | |
| 316 | t->source_file = (char *) xmalloc (strlen (sal.symtab->filename) + |
| 317 | strlen (sal.symtab->dirname) + 2); |
| 318 | |
| 319 | strcpy (t->source_file, sal.symtab->dirname); |
| 320 | p = t->source_file; |
| 321 | while (*p) |
| 322 | p++; |
| 323 | if (*(--p) != '/') /* Will this work on Windows? */ |
| 324 | strcat (t->source_file, "/"); |
| 325 | strcat (t->source_file, sal.symtab->filename); |
| 326 | } |
| 327 | |
| 328 | t->language = current_language->la_language; |
| 329 | t->input_radix = input_radix; |
| 330 | t->line_number = sal.line; |
| 331 | t->enabled = enabled; |
| 332 | t->next = 0; |
| 333 | t->step_count = 0; |
| 334 | t->pass_count = 0; |
| 335 | t->addr_string = NULL; |
| 336 | |
| 337 | /* Add this tracepoint to the end of the chain |
| 338 | so that a list of tracepoints will come out in order |
| 339 | of increasing numbers. */ |
| 340 | |
| 341 | tc = tracepoint_chain; |
| 342 | if (tc == 0) |
| 343 | tracepoint_chain = t; |
| 344 | else |
| 345 | { |
| 346 | while (tc->next) |
| 347 | tc = tc->next; |
| 348 | tc->next = t; |
| 349 | } |
| 350 | discard_cleanups (old_chain); |
| 351 | return t; |
| 352 | } |
| 353 | |
| 354 | /* Set a tracepoint according to ARG (function, linenum or *address) */ |
| 355 | static void |
| 356 | trace_command (arg, from_tty) |
| 357 | char *arg; |
| 358 | int from_tty; |
| 359 | { |
| 360 | char **canonical = (char **)NULL; |
| 361 | struct symtabs_and_lines sals; |
| 362 | struct symtab_and_line sal; |
| 363 | struct tracepoint *t; |
| 364 | char *addr_start = 0, *addr_end = 0; |
| 365 | int i; |
| 366 | |
| 367 | if (!arg || !*arg) |
| 368 | error ("trace command requires an argument"); |
| 369 | |
| 370 | if (from_tty && info_verbose) |
| 371 | printf_filtered ("TRACE %s\n", arg); |
| 372 | |
| 373 | if (arg[0] == '/') |
| 374 | { |
| 375 | return; |
| 376 | } |
| 377 | |
| 378 | addr_start = arg; |
| 379 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
| 380 | addr_end = arg; |
| 381 | if (! sals.nelts) |
| 382 | return; /* ??? Presumably decode_line_1 has already warned? */ |
| 383 | |
| 384 | /* Resolve all line numbers to PC's */ |
| 385 | for (i = 0; i < sals.nelts; i++) |
| 386 | resolve_sal_pc (&sals.sals[i]); |
| 387 | |
| 388 | /* Now set all the tracepoints. */ |
| 389 | for (i = 0; i < sals.nelts; i++) |
| 390 | { |
| 391 | sal = sals.sals[i]; |
| 392 | |
| 393 | t = set_raw_tracepoint (sal); |
| 394 | set_tracepoint_count (tracepoint_count + 1); |
| 395 | t->number = tracepoint_count; |
| 396 | |
| 397 | /* If a canonical line spec is needed use that instead of the |
| 398 | command string. */ |
| 399 | if (canonical != (char **)NULL && canonical[i] != NULL) |
| 400 | t->addr_string = canonical[i]; |
| 401 | else if (addr_start) |
| 402 | t->addr_string = savestring (addr_start, addr_end - addr_start); |
| 403 | |
| 404 | /* Let the UI know of any additions */ |
| 405 | if (create_tracepoint_hook) |
| 406 | create_tracepoint_hook (t); |
| 407 | } |
| 408 | |
| 409 | if (sals.nelts > 1) |
| 410 | { |
| 411 | printf_filtered ("Multiple tracepoints were set.\n"); |
| 412 | printf_filtered ("Use 'delete trace' to delete unwanted tracepoints.\n"); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /* Print information on tracepoint number TPNUM_EXP, or all if omitted. */ |
| 417 | |
| 418 | static void |
| 419 | tracepoints_info (tpnum_exp, from_tty) |
| 420 | char *tpnum_exp; |
| 421 | int from_tty; |
| 422 | { |
| 423 | struct tracepoint *t; |
| 424 | struct action_line *action; |
| 425 | int found_a_tracepoint = 0; |
| 426 | char wrap_indent[80]; |
| 427 | struct symbol *sym; |
| 428 | int tpnum = -1; |
| 429 | #if 0 |
| 430 | char *i1 = "\t", *i2 = "\t "; |
| 431 | char *indent, *actionline;; |
| 432 | #endif |
| 433 | |
| 434 | if (tpnum_exp) |
| 435 | tpnum = parse_and_eval_address (tpnum_exp); |
| 436 | |
| 437 | ALL_TRACEPOINTS (t) |
| 438 | if (tpnum == -1 || tpnum == t->number) |
| 439 | { |
| 440 | extern int addressprint; /* print machine addresses? */ |
| 441 | |
| 442 | if (!found_a_tracepoint++) |
| 443 | { |
| 444 | printf_filtered ("Num Enb "); |
| 445 | if (addressprint) |
| 446 | printf_filtered ("Address "); |
| 447 | printf_filtered ("PassC StepC What\n"); |
| 448 | } |
| 449 | strcpy (wrap_indent, " "); |
| 450 | if (addressprint) |
| 451 | strcat (wrap_indent, " "); |
| 452 | |
| 453 | printf_filtered ("%-3d %-3s ", t->number, |
| 454 | t->enabled == enabled ? "y" : "n"); |
| 455 | if (addressprint) |
| 456 | printf_filtered ("%s ", |
| 457 | local_hex_string_custom ((unsigned long) t->address, |
| 458 | "08l")); |
| 459 | printf_filtered ("%-5d %-5d ", t->pass_count, t->step_count); |
| 460 | |
| 461 | if (t->source_file) |
| 462 | { |
| 463 | sym = find_pc_function (t->address); |
| 464 | if (sym) |
| 465 | { |
| 466 | fputs_filtered ("in ", gdb_stdout); |
| 467 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); |
| 468 | wrap_here (wrap_indent); |
| 469 | fputs_filtered (" at ", gdb_stdout); |
| 470 | } |
| 471 | fputs_filtered (t->source_file, gdb_stdout); |
| 472 | printf_filtered (":%d", t->line_number); |
| 473 | } |
| 474 | else |
| 475 | print_address_symbolic (t->address, gdb_stdout, demangle, " "); |
| 476 | |
| 477 | printf_filtered ("\n"); |
| 478 | if (t->actions) |
| 479 | { |
| 480 | printf_filtered (" Actions for tracepoint %d: \n", t->number); |
| 481 | /* indent = i1; */ |
| 482 | for (action = t->actions; action; action = action->next) |
| 483 | { |
| 484 | #if 0 |
| 485 | actionline = action->action; |
| 486 | while (isspace(*actionline)) |
| 487 | actionline++; |
| 488 | |
| 489 | printf_filtered ("%s%s\n", indent, actionline); |
| 490 | if (0 == strncasecmp (actionline, "while-stepping", 14)) |
| 491 | indent = i2; |
| 492 | else if (0 == strncasecmp (actionline, "end", 3)) |
| 493 | indent = i1; |
| 494 | #else |
| 495 | printf_filtered ("\t%s\n", action->action); |
| 496 | #endif |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | if (!found_a_tracepoint) |
| 501 | { |
| 502 | if (tpnum == -1) |
| 503 | printf_filtered ("No tracepoints.\n"); |
| 504 | else |
| 505 | printf_filtered ("No tracepoint number %d.\n", tpnum); |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | /* Optimization: the code to parse an enable, disable, or delete TP command |
| 510 | is virtually identical except for whether it performs an enable, disable, |
| 511 | or delete. Therefore I've combined them into one function with an opcode. |
| 512 | */ |
| 513 | enum tracepoint_opcode |
| 514 | { |
| 515 | enable, |
| 516 | disable, |
| 517 | delete |
| 518 | }; |
| 519 | |
| 520 | /* This function implements enable, disable and delete. */ |
| 521 | static void |
| 522 | tracepoint_operation (t, from_tty, opcode) |
| 523 | struct tracepoint *t; |
| 524 | int from_tty; |
| 525 | enum tracepoint_opcode opcode; |
| 526 | { |
| 527 | struct tracepoint *t2; |
| 528 | |
| 529 | switch (opcode) { |
| 530 | case enable: |
| 531 | t->enabled = enabled; |
| 532 | if (modify_tracepoint_hook) |
| 533 | modify_tracepoint_hook (t); |
| 534 | break; |
| 535 | case disable: |
| 536 | t->enabled = disabled; |
| 537 | if (modify_tracepoint_hook) |
| 538 | modify_tracepoint_hook (t); |
| 539 | break; |
| 540 | case delete: |
| 541 | if (tracepoint_chain == t) |
| 542 | tracepoint_chain = t->next; |
| 543 | |
| 544 | ALL_TRACEPOINTS (t2) |
| 545 | if (t2->next == t) |
| 546 | { |
| 547 | t2->next = t->next; |
| 548 | break; |
| 549 | } |
| 550 | |
| 551 | /* Let the UI know of any deletions */ |
| 552 | if (delete_tracepoint_hook) |
| 553 | delete_tracepoint_hook (t); |
| 554 | |
| 555 | if (t->addr_string) |
| 556 | free (t->addr_string); |
| 557 | if (t->source_file) |
| 558 | free (t->source_file); |
| 559 | if (t->actions) |
| 560 | free_actions (t); |
| 561 | |
| 562 | free (t); |
| 563 | break; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | /* Utility: parse a tracepoint number and look it up in the list. */ |
| 568 | struct tracepoint * |
| 569 | get_tracepoint_by_number (arg) |
| 570 | char **arg; |
| 571 | { |
| 572 | struct tracepoint *t; |
| 573 | char *end, *copy; |
| 574 | value_ptr val; |
| 575 | int tpnum; |
| 576 | |
| 577 | if (arg == 0) |
| 578 | error ("Bad tracepoint argument"); |
| 579 | |
| 580 | if (*arg == 0 || **arg == 0) /* empty arg means refer to last tp */ |
| 581 | tpnum = tracepoint_count; |
| 582 | else if (**arg == '$') /* handle convenience variable */ |
| 583 | { |
| 584 | /* Make a copy of the name, so we can null-terminate it |
| 585 | to pass to lookup_internalvar(). */ |
| 586 | end = *arg + 1; |
| 587 | while (isalnum(*end) || *end == '_') |
| 588 | end++; |
| 589 | copy = (char *) alloca (end - *arg); |
| 590 | strncpy (copy, *arg + 1, (end - *arg - 1)); |
| 591 | copy[end - *arg - 1] = '\0'; |
| 592 | *arg = end; |
| 593 | |
| 594 | val = value_of_internalvar (lookup_internalvar (copy)); |
| 595 | if (TYPE_CODE( VALUE_TYPE (val)) != TYPE_CODE_INT) |
| 596 | error ("Convenience variable must have integral type."); |
| 597 | tpnum = (int) value_as_long (val); |
| 598 | } |
| 599 | else /* handle tracepoint number */ |
| 600 | { |
| 601 | tpnum = strtol (*arg, arg, 10); |
| 602 | } |
| 603 | ALL_TRACEPOINTS (t) |
| 604 | if (t->number == tpnum) |
| 605 | { |
| 606 | return t; |
| 607 | } |
| 608 | warning ("No tracepoint number %d.\n", tpnum); |
| 609 | return NULL; |
| 610 | } |
| 611 | |
| 612 | /* Utility: parse a list of tracepoint numbers, and call a func for each. */ |
| 613 | static void |
| 614 | map_args_over_tracepoints (args, from_tty, opcode) |
| 615 | char *args; |
| 616 | int from_tty; |
| 617 | enum tracepoint_opcode opcode; |
| 618 | { |
| 619 | struct tracepoint *t, *tmp; |
| 620 | int tpnum; |
| 621 | char *cp; |
| 622 | |
| 623 | if (args == 0 || *args == 0) /* do them all */ |
| 624 | ALL_TRACEPOINTS_SAFE (t, tmp) |
| 625 | tracepoint_operation (t, from_tty, opcode); |
| 626 | else |
| 627 | while (*args) |
| 628 | { |
| 629 | if (t = get_tracepoint_by_number (&args)) |
| 630 | tracepoint_operation (t, from_tty, opcode); |
| 631 | while (*args == ' ' || *args == '\t') |
| 632 | args++; |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | /* The 'enable trace' command enables tracepoints. Not supported by all targets. */ |
| 637 | static void |
| 638 | enable_trace_command (args, from_tty) |
| 639 | char *args; |
| 640 | int from_tty; |
| 641 | { |
| 642 | dont_repeat (); |
| 643 | map_args_over_tracepoints (args, from_tty, enable); |
| 644 | } |
| 645 | |
| 646 | /* The 'disable trace' command enables tracepoints. Not supported by all targets. */ |
| 647 | static void |
| 648 | disable_trace_command (args, from_tty) |
| 649 | char *args; |
| 650 | int from_tty; |
| 651 | { |
| 652 | dont_repeat (); |
| 653 | map_args_over_tracepoints (args, from_tty, disable); |
| 654 | } |
| 655 | |
| 656 | /* Remove a tracepoint (or all if no argument) */ |
| 657 | static void |
| 658 | delete_trace_command (args, from_tty) |
| 659 | char *args; |
| 660 | int from_tty; |
| 661 | { |
| 662 | dont_repeat (); |
| 663 | if (!args || !*args) |
| 664 | if (!query ("Delete all tracepoints? ")) |
| 665 | return; |
| 666 | |
| 667 | map_args_over_tracepoints (args, from_tty, delete); |
| 668 | } |
| 669 | |
| 670 | /* Set passcount for tracepoint. |
| 671 | |
| 672 | First command argument is passcount, second is tracepoint number. |
| 673 | If tracepoint number omitted, apply to most recently defined. |
| 674 | Also accepts special argument "all". */ |
| 675 | |
| 676 | static void |
| 677 | trace_pass_command (args, from_tty) |
| 678 | char *args; |
| 679 | int from_tty; |
| 680 | { |
| 681 | struct tracepoint *t1 = (struct tracepoint *) -1, *t2; |
| 682 | unsigned long count; |
| 683 | |
| 684 | if (args == 0 || *args == 0) |
| 685 | error ("PASS command requires an argument (count + optional TP num)"); |
| 686 | |
| 687 | count = strtoul (args, &args, 10); /* count comes first, then TP num */ |
| 688 | |
| 689 | while (*args && isspace (*args)) |
| 690 | args++; |
| 691 | |
| 692 | if (*args && strncasecmp (args, "all", 3) == 0) |
| 693 | args += 3; /* skip special argument "all" */ |
| 694 | else |
| 695 | t1 = get_tracepoint_by_number (&args); |
| 696 | |
| 697 | if (t1 == NULL) |
| 698 | return; /* error, bad tracepoint number */ |
| 699 | |
| 700 | ALL_TRACEPOINTS (t2) |
| 701 | if (t1 == (struct tracepoint *) -1 || t1 == t2) |
| 702 | { |
| 703 | t2->pass_count = count; |
| 704 | if (from_tty) |
| 705 | printf_filtered ("Setting tracepoint %d's passcount to %d\n", |
| 706 | t2->number, count); |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | /* ACTIONS functions: */ |
| 711 | |
| 712 | /* Prototypes for action-parsing utility commands */ |
| 713 | static void read_actions PARAMS((struct tracepoint *)); |
| 714 | static char *parse_and_eval_memrange PARAMS ((char *, |
| 715 | CORE_ADDR, |
| 716 | long *, |
| 717 | bfd_signed_vma *, |
| 718 | long *)); |
| 719 | |
| 720 | /* The three functions: |
| 721 | collect_pseudocommand, |
| 722 | while_stepping_pseudocommand, and |
| 723 | end_actions_pseudocommand |
| 724 | are placeholders for "commands" that are actually ONLY to be used |
| 725 | within a tracepoint action list. If the actual function is ever called, |
| 726 | it means that somebody issued the "command" at the top level, |
| 727 | which is always an error. */ |
| 728 | |
| 729 | static void |
| 730 | end_actions_pseudocommand (args, from_tty) |
| 731 | char *args; |
| 732 | int from_tty; |
| 733 | { |
| 734 | error ("This command cannot be used at the top level."); |
| 735 | } |
| 736 | |
| 737 | static void |
| 738 | while_stepping_pseudocommand (args, from_tty) |
| 739 | char *args; |
| 740 | int from_tty; |
| 741 | { |
| 742 | error ("This command can only be used in a tracepoint actions list."); |
| 743 | } |
| 744 | |
| 745 | static void |
| 746 | collect_pseudocommand (args, from_tty) |
| 747 | char *args; |
| 748 | int from_tty; |
| 749 | { |
| 750 | error ("This command can only be used in a tracepoint actions list."); |
| 751 | } |
| 752 | |
| 753 | /* Enter a list of actions for a tracepoint. */ |
| 754 | static void |
| 755 | trace_actions_command (args, from_tty) |
| 756 | char *args; |
| 757 | int from_tty; |
| 758 | { |
| 759 | struct tracepoint *t; |
| 760 | char *actions; |
| 761 | char tmpbuf[128]; |
| 762 | char *end_msg = "End with a line saying just \"end\"."; |
| 763 | |
| 764 | if (t = get_tracepoint_by_number (&args)) |
| 765 | { |
| 766 | sprintf (tmpbuf, "Enter actions for tracepoint %d, one per line.", |
| 767 | t->number); |
| 768 | |
| 769 | if (from_tty) |
| 770 | { |
| 771 | if (readline_begin_hook) |
| 772 | (*readline_begin_hook) ("%s %s\n", tmpbuf, end_msg); |
| 773 | else if (input_from_terminal_p ()) |
| 774 | printf_filtered ("%s\n%s\n", tmpbuf, end_msg); |
| 775 | } |
| 776 | |
| 777 | free_actions (t); |
| 778 | read_actions (t); |
| 779 | |
| 780 | if (readline_end_hook) |
| 781 | (*readline_end_hook) (); |
| 782 | |
| 783 | /* tracepoints_changed () */ |
| 784 | } |
| 785 | /* else error, just return; */ |
| 786 | } |
| 787 | |
| 788 | enum actionline_type |
| 789 | { |
| 790 | BADLINE = -1, |
| 791 | GENERIC = 0, |
| 792 | END = 1, |
| 793 | STEPPING = 2, |
| 794 | }; |
| 795 | |
| 796 | static enum actionline_type validate_actionline PARAMS((char **, |
| 797 | struct tracepoint *)); |
| 798 | |
| 799 | /* worker function */ |
| 800 | static void |
| 801 | read_actions (t) |
| 802 | struct tracepoint *t; |
| 803 | { |
| 804 | char *line; |
| 805 | char *prompt1 = "> ", *prompt2 = " > "; |
| 806 | char *prompt = prompt1; |
| 807 | enum actionline_type linetype; |
| 808 | extern FILE *instream; |
| 809 | struct action_line *next = NULL, *temp; |
| 810 | struct cleanup *old_chain; |
| 811 | |
| 812 | /* Control-C quits instantly if typed while in this loop |
| 813 | since it should not wait until the user types a newline. */ |
| 814 | immediate_quit++; |
| 815 | #ifdef STOP_SIGNAL |
| 816 | if (job_control) |
| 817 | signal (STOP_SIGNAL, stop_sig); |
| 818 | #endif |
| 819 | old_chain = make_cleanup (free_actions, (void *) t); |
| 820 | while (1) |
| 821 | { |
| 822 | /* Make sure that all output has been output. Some machines may let |
| 823 | you get away with leaving out some of the gdb_flush, but not all. */ |
| 824 | wrap_here (""); |
| 825 | gdb_flush (gdb_stdout); |
| 826 | gdb_flush (gdb_stderr); |
| 827 | |
| 828 | if (readline_hook && instream == NULL) |
| 829 | line = (*readline_hook) (prompt); |
| 830 | else if (instream == stdin && ISATTY (instream)) |
| 831 | { |
| 832 | line = readline (prompt); |
| 833 | if (line && *line) /* add it to command history */ |
| 834 | add_history (line); |
| 835 | } |
| 836 | else |
| 837 | line = gdb_readline (0); |
| 838 | |
| 839 | linetype = validate_actionline (&line, t); |
| 840 | if (linetype == BADLINE) |
| 841 | continue; /* already warned -- collect another line */ |
| 842 | |
| 843 | temp = xmalloc (sizeof (struct action_line)); |
| 844 | temp->next = NULL; |
| 845 | temp->action = line; |
| 846 | |
| 847 | if (next == NULL) /* first action for this tracepoint? */ |
| 848 | t->actions = next = temp; |
| 849 | else |
| 850 | { |
| 851 | next->next = temp; |
| 852 | next = temp; |
| 853 | } |
| 854 | |
| 855 | if (linetype == STEPPING) /* begin "while-stepping" */ |
| 856 | if (prompt == prompt2) |
| 857 | { |
| 858 | warning ("Already processing 'while-stepping'"); |
| 859 | continue; |
| 860 | } |
| 861 | else |
| 862 | prompt = prompt2; /* change prompt for stepping actions */ |
| 863 | else if (linetype == END) |
| 864 | if (prompt == prompt2) |
| 865 | prompt = prompt1; /* end of single-stepping actions */ |
| 866 | else |
| 867 | break; /* end of actions */ |
| 868 | } |
| 869 | #ifdef STOP_SIGNAL |
| 870 | if (job_control) |
| 871 | signal (STOP_SIGNAL, SIG_DFL); |
| 872 | #endif |
| 873 | immediate_quit = 0; |
| 874 | discard_cleanups (old_chain); |
| 875 | } |
| 876 | |
| 877 | /* worker function */ |
| 878 | static enum actionline_type |
| 879 | validate_actionline (line, t) |
| 880 | char **line; |
| 881 | struct tracepoint *t; |
| 882 | { |
| 883 | struct cmd_list_element *c; |
| 884 | struct expression *exp; |
| 885 | value_ptr temp, temp2; |
| 886 | char *p; |
| 887 | |
| 888 | for (p = *line; isspace (*p); ) |
| 889 | p++; |
| 890 | |
| 891 | /* symbol lookup etc. */ |
| 892 | if (*p == '\0') /* empty line: just prompt for another line. */ |
| 893 | return BADLINE; |
| 894 | |
| 895 | if (*p == '#') /* comment line */ |
| 896 | return GENERIC; |
| 897 | |
| 898 | c = lookup_cmd (&p, cmdlist, "", -1, 1); |
| 899 | if (c == 0) |
| 900 | { |
| 901 | warning ("'%s' is not an action that I know, or is ambiguous.", p); |
| 902 | return BADLINE; |
| 903 | } |
| 904 | |
| 905 | if (c->function.cfunc == collect_pseudocommand) |
| 906 | { |
| 907 | do { /* repeat over a comma-separated list */ |
| 908 | while (isspace (*p)) |
| 909 | p++; |
| 910 | |
| 911 | if (*p == '$') /* look for special pseudo-symbols */ |
| 912 | { |
| 913 | long typecode, size; |
| 914 | bfd_signed_vma offset; |
| 915 | |
| 916 | if ((0 == strncasecmp ("reg", p + 1, 3)) || |
| 917 | (0 == strncasecmp ("arg", p + 1, 3)) || |
| 918 | (0 == strncasecmp ("loc", p + 1, 3))) |
| 919 | p = strchr (p, ','); |
| 920 | |
| 921 | else if (p[1] == '(') /* literal memrange */ |
| 922 | { |
| 923 | char *temp, *newline; |
| 924 | |
| 925 | newline = malloc (strlen (*line) + 32); |
| 926 | strcpy (newline, *line); |
| 927 | newline[p - *line] = '\0'; |
| 928 | /* newline is now a copy of line, up to "p" (the memrange) */ |
| 929 | temp = parse_and_eval_memrange (p, t->address, |
| 930 | &typecode, &offset, &size) + 1; |
| 931 | /* now compose the memrange as a literal value */ |
| 932 | if (typecode == -1) |
| 933 | sprintf (newline + strlen (newline), |
| 934 | "$(0x%x, %d)", |
| 935 | offset, size); |
| 936 | else |
| 937 | sprintf (newline + strlen (newline), |
| 938 | "$($%s, 0x%x, %d)", |
| 939 | reg_names[typecode], offset, size); |
| 940 | /* now add the remainder of the old line to the new one */ |
| 941 | p = newline + strlen (newline); |
| 942 | if (temp && *temp) |
| 943 | strcat (newline, temp); |
| 944 | free (*line); |
| 945 | *line = newline; |
| 946 | } |
| 947 | } |
| 948 | else |
| 949 | { |
| 950 | exp = parse_exp_1 (&p, block_for_pc (t->address), 1); |
| 951 | |
| 952 | if (exp->elts[0].opcode != OP_VAR_VALUE && |
| 953 | exp->elts[0].opcode != UNOP_MEMVAL && |
| 954 | /*exp->elts[0].opcode != OP_LONG && */ |
| 955 | /*exp->elts[0].opcode != UNOP_CAST && */ |
| 956 | exp->elts[0].opcode != OP_REGISTER) |
| 957 | { |
| 958 | warning ("collect requires a variable or register name.\n"); |
| 959 | return BADLINE; |
| 960 | } |
| 961 | if (exp->elts[0].opcode == OP_VAR_VALUE) |
| 962 | if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_CONST) |
| 963 | { |
| 964 | warning ("%s is constant (value %d): will not be collected.", |
| 965 | SYMBOL_NAME (exp->elts[2].symbol), |
| 966 | SYMBOL_VALUE (exp->elts[2].symbol)); |
| 967 | return BADLINE; |
| 968 | } |
| 969 | else if (SYMBOL_CLASS (exp->elts[2].symbol) == LOC_OPTIMIZED_OUT) |
| 970 | { |
| 971 | warning ("%s is optimized away and cannot be collected.", |
| 972 | SYMBOL_NAME (exp->elts[2].symbol)); |
| 973 | return BADLINE; |
| 974 | } |
| 975 | } |
| 976 | } while (p && *p++ == ','); |
| 977 | return GENERIC; |
| 978 | } |
| 979 | else if (c->function.cfunc == while_stepping_pseudocommand) |
| 980 | { |
| 981 | char *steparg; /* in case warning is necessary */ |
| 982 | |
| 983 | while (isspace (*p)) |
| 984 | p++; |
| 985 | steparg = p; |
| 986 | |
| 987 | if (*p) |
| 988 | { |
| 989 | t->step_count = strtol (p, &p, 0); |
| 990 | if (t->step_count == 0) |
| 991 | { |
| 992 | warning ("'%s' evaluates to zero -- command ignored."); |
| 993 | return BADLINE; |
| 994 | } |
| 995 | } |
| 996 | else |
| 997 | t->step_count = -1; |
| 998 | return STEPPING; |
| 999 | } |
| 1000 | else if (c->function.cfunc == end_actions_pseudocommand) |
| 1001 | return END; |
| 1002 | else |
| 1003 | { |
| 1004 | warning ("'%s' is not a supported tracepoint action.", *line); |
| 1005 | return BADLINE; |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | /* worker function */ |
| 1010 | void |
| 1011 | free_actions (t) |
| 1012 | struct tracepoint *t; |
| 1013 | { |
| 1014 | struct action_line *line, *next; |
| 1015 | |
| 1016 | for (line = t->actions; line; line = next) |
| 1017 | { |
| 1018 | next = line->next; |
| 1019 | if (line->action) |
| 1020 | free (line->action); |
| 1021 | free (line); |
| 1022 | } |
| 1023 | t->actions = NULL; |
| 1024 | } |
| 1025 | |
| 1026 | struct memrange { |
| 1027 | int type; /* 0 for absolute memory range, else basereg number */ |
| 1028 | bfd_signed_vma start; |
| 1029 | bfd_signed_vma end; |
| 1030 | }; |
| 1031 | |
| 1032 | struct collection_list { |
| 1033 | unsigned char regs_mask[8]; /* room for up to 256 regs */ |
| 1034 | long listsize; |
| 1035 | long next_memrange; |
| 1036 | struct memrange *list; |
| 1037 | } tracepoint_list, stepping_list; |
| 1038 | |
| 1039 | /* MEMRANGE functions: */ |
| 1040 | |
| 1041 | /* parse a memrange spec from command input */ |
| 1042 | static char * |
| 1043 | parse_and_eval_memrange (arg, addr, typecode, offset, size) |
| 1044 | char *arg; |
| 1045 | CORE_ADDR addr; |
| 1046 | long *typecode, *size; |
| 1047 | bfd_signed_vma *offset; |
| 1048 | { |
| 1049 | char *start = arg; |
| 1050 | struct expression *exp; |
| 1051 | value_ptr val; |
| 1052 | |
| 1053 | if (*arg++ != '$' || *arg++ != '(') |
| 1054 | error ("Internal: bad argument to parse_and_eval_memrange: %s", start); |
| 1055 | |
| 1056 | if (*arg == '$') /* register for relative memrange? */ |
| 1057 | { |
| 1058 | exp = parse_exp_1 (&arg, block_for_pc (addr), 1); |
| 1059 | if (exp->elts[0].opcode != OP_REGISTER) |
| 1060 | error ("Bad register operand for memrange: %s", start); |
| 1061 | if (*arg++ != ',') |
| 1062 | error ("missing comma for memrange: %s", start); |
| 1063 | *typecode = exp->elts[1].longconst; |
| 1064 | } |
| 1065 | else |
| 1066 | *typecode = -1; /* absolute memrange; */ |
| 1067 | |
| 1068 | exp = parse_exp_1 (&arg, 0, 1); |
| 1069 | *offset = value_as_pointer (evaluate_expression (exp)); |
| 1070 | |
| 1071 | /* now parse the size */ |
| 1072 | if (*arg++ != ',') |
| 1073 | error ("missing comma for memrange: %s", start); |
| 1074 | |
| 1075 | exp = parse_exp_1 (&arg, 0, 0); |
| 1076 | *size = value_as_long (evaluate_expression (exp)); |
| 1077 | |
| 1078 | if (info_verbose) |
| 1079 | printf_filtered ("Collecting memrange: (0x%x,0x%x,0x%x)\n", |
| 1080 | *typecode, *offset, *size); |
| 1081 | |
| 1082 | return arg; |
| 1083 | } |
| 1084 | |
| 1085 | /* compare memranges for qsort */ |
| 1086 | static int |
| 1087 | memrange_cmp (a, b) |
| 1088 | struct memrange *a, *b; |
| 1089 | { |
| 1090 | if (a->type < b->type) return -1; |
| 1091 | if (a->type > b->type) return 1; |
| 1092 | if (a->type == 0) |
| 1093 | { |
| 1094 | if ((bfd_vma) a->start < (bfd_vma) b->start) return -1; |
| 1095 | if ((bfd_vma) a->start > (bfd_vma) b->start) return 1; |
| 1096 | } |
| 1097 | else |
| 1098 | { |
| 1099 | if (a->start < b->start) return -1; |
| 1100 | if (a->start > b->start) return 1; |
| 1101 | } |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
| 1105 | /* Sort the memrange list using qsort, and merge adjacent memranges */ |
| 1106 | static void |
| 1107 | memrange_sortmerge (memranges) |
| 1108 | struct collection_list *memranges; |
| 1109 | { |
| 1110 | int a, b; |
| 1111 | |
| 1112 | qsort (memranges->list, memranges->next_memrange, |
| 1113 | sizeof (struct memrange), memrange_cmp); |
| 1114 | if (memranges->next_memrange > 0) |
| 1115 | { |
| 1116 | for (a = 0, b = 1; b < memranges->next_memrange; b++) |
| 1117 | { |
| 1118 | if (memranges->list[a].type == memranges->list[b].type && |
| 1119 | memranges->list[b].start - memranges->list[a].end <= |
| 1120 | MAX_REGISTER_VIRTUAL_SIZE) |
| 1121 | { |
| 1122 | /* memrange b starts before memrange a ends; merge them. */ |
| 1123 | if (memranges->list[b].end > memranges->list[a].end) |
| 1124 | memranges->list[a].end = memranges->list[b].end; |
| 1125 | continue; /* next b, same a */ |
| 1126 | } |
| 1127 | a++; /* next a */ |
| 1128 | if (a != b) |
| 1129 | memcpy (&memranges->list[a], &memranges->list[b], |
| 1130 | sizeof (struct memrange)); |
| 1131 | } |
| 1132 | memranges->next_memrange = a + 1; |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | /* Add a register to a collection list */ |
| 1137 | void |
| 1138 | add_register (collection, regno) |
| 1139 | struct collection_list *collection; |
| 1140 | unsigned long regno; |
| 1141 | { |
| 1142 | if (info_verbose) |
| 1143 | printf_filtered ("collect register %d\n", regno); |
| 1144 | if (regno > (8 * sizeof (collection->regs_mask))) |
| 1145 | error ("Internal: register number %d too large for tracepoint", |
| 1146 | regno); |
| 1147 | collection->regs_mask [regno / 8] |= 1 << (regno % 8); |
| 1148 | } |
| 1149 | |
| 1150 | /* Add a memrange to a collection list */ |
| 1151 | static void |
| 1152 | add_memrange (memranges, type, base, len) |
| 1153 | struct collection_list *memranges; |
| 1154 | int type; |
| 1155 | bfd_signed_vma base; |
| 1156 | unsigned long len; |
| 1157 | { |
| 1158 | if (info_verbose) |
| 1159 | printf_filtered ("(%d,0x%x,%d)\n", type, base, len); |
| 1160 | /* type: 0 == memory, n == basereg */ |
| 1161 | memranges->list[memranges->next_memrange].type = type; |
| 1162 | /* base: addr if memory, offset if reg relative. */ |
| 1163 | memranges->list[memranges->next_memrange].start = base; |
| 1164 | /* len: we actually save end (base + len) for convenience */ |
| 1165 | memranges->list[memranges->next_memrange].end = base + len; |
| 1166 | memranges->next_memrange++; |
| 1167 | if (memranges->next_memrange >= memranges->listsize) |
| 1168 | { |
| 1169 | memranges->listsize *= 2; |
| 1170 | memranges->list = xrealloc (memranges->list, |
| 1171 | memranges->listsize); |
| 1172 | } |
| 1173 | |
| 1174 | if (type != -1) /* better collect the base register! */ |
| 1175 | add_register (memranges, type); |
| 1176 | } |
| 1177 | |
| 1178 | /* Add a symbol to a collection list */ |
| 1179 | static void |
| 1180 | collect_symbol (collect, sym) |
| 1181 | struct collection_list *collect; |
| 1182 | struct symbol *sym; |
| 1183 | { |
| 1184 | unsigned long len; |
| 1185 | unsigned long reg; |
| 1186 | bfd_signed_vma offset; |
| 1187 | |
| 1188 | len = TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym))); |
| 1189 | switch (SYMBOL_CLASS (sym)) { |
| 1190 | default: |
| 1191 | printf_filtered ("%s: don't know symbol class %d\n", |
| 1192 | SYMBOL_NAME (sym), SYMBOL_CLASS (sym)); |
| 1193 | break; |
| 1194 | case LOC_CONST: |
| 1195 | printf_filtered ("%s is constant, value is %d: will not be collected.\n", |
| 1196 | SYMBOL_NAME (sym), SYMBOL_VALUE (sym)); |
| 1197 | break; |
| 1198 | case LOC_STATIC: |
| 1199 | offset = SYMBOL_VALUE_ADDRESS (sym); |
| 1200 | if (info_verbose) |
| 1201 | printf_filtered ("LOC_STATIC %s: collect %d bytes at 0x%08x\n", |
| 1202 | SYMBOL_NAME (sym), len, offset); |
| 1203 | add_memrange (collect, -1, offset, len); /* 0 == memory */ |
| 1204 | break; |
| 1205 | case LOC_REGISTER: |
| 1206 | case LOC_REGPARM: |
| 1207 | reg = SYMBOL_VALUE (sym); |
| 1208 | if (info_verbose) |
| 1209 | printf_filtered ("LOC_REG[parm] %s: ", SYMBOL_NAME (sym)); |
| 1210 | add_register (collect, reg); |
| 1211 | break; |
| 1212 | case LOC_ARG: |
| 1213 | case LOC_REF_ARG: |
| 1214 | printf_filtered ("Sorry, don't know how to do LOC_ARGs yet.\n"); |
| 1215 | printf_filtered (" (will not collect %s)\n", |
| 1216 | SYMBOL_NAME (sym)); |
| 1217 | break; |
| 1218 | case LOC_REGPARM_ADDR: |
| 1219 | reg = SYMBOL_VALUE (sym); |
| 1220 | offset = 0; |
| 1221 | if (info_verbose) |
| 1222 | { |
| 1223 | printf_filtered ("LOC_REGPARM_ADDR %s: Collect %d bytes at offset %d from reg %d\n", |
| 1224 | SYMBOL_NAME (sym), len, offset, reg); |
| 1225 | } |
| 1226 | add_memrange (collect, reg, offset, len); |
| 1227 | break; |
| 1228 | case LOC_LOCAL: |
| 1229 | case LOC_LOCAL_ARG: |
| 1230 | offset = SYMBOL_VALUE (sym); |
| 1231 | reg = FP_REGNUM; |
| 1232 | if (info_verbose) |
| 1233 | { |
| 1234 | printf_filtered ("LOC_LOCAL %s: Collect %d bytes at offset %d from frame ptr reg %d\n", |
| 1235 | SYMBOL_NAME (sym), len, offset, reg); |
| 1236 | } |
| 1237 | add_memrange (collect, reg, offset, len); |
| 1238 | break; |
| 1239 | case LOC_BASEREG: |
| 1240 | case LOC_BASEREG_ARG: |
| 1241 | reg = SYMBOL_BASEREG (sym); |
| 1242 | offset = SYMBOL_VALUE (sym); |
| 1243 | if (info_verbose) |
| 1244 | { |
| 1245 | printf_filtered ("LOC_BASEREG %s: collect %d bytes at offset %d from basereg %d\n", |
| 1246 | SYMBOL_NAME (sym), len, offset, reg); |
| 1247 | } |
| 1248 | add_memrange (collect, reg, offset, len); |
| 1249 | break; |
| 1250 | case LOC_UNRESOLVED: |
| 1251 | printf_filtered ("Don't know LOC_UNRESOLVED %s\n", SYMBOL_NAME (sym)); |
| 1252 | break; |
| 1253 | case LOC_OPTIMIZED_OUT: |
| 1254 | printf_filtered ("%s has been optimized out of existance.\n", |
| 1255 | SYMBOL_NAME (sym)); |
| 1256 | break; |
| 1257 | } |
| 1258 | } |
| 1259 | |
| 1260 | /* Add all locals (or args) symbols to collection list */ |
| 1261 | static void |
| 1262 | add_local_symbols (collect, pc, type) |
| 1263 | struct collection_list *collect; |
| 1264 | CORE_ADDR pc; |
| 1265 | char type; |
| 1266 | { |
| 1267 | struct symbol *sym; |
| 1268 | struct block *block; |
| 1269 | int i, nsyms, count = 0; |
| 1270 | |
| 1271 | block = block_for_pc (pc); |
| 1272 | while (block != 0) |
| 1273 | { |
| 1274 | nsyms = BLOCK_NSYMS (block); |
| 1275 | for (i = 0; i < nsyms; i++) |
| 1276 | { |
| 1277 | sym = BLOCK_SYM (block, i); |
| 1278 | switch (SYMBOL_CLASS (sym)) { |
| 1279 | case LOC_LOCAL: |
| 1280 | case LOC_STATIC: |
| 1281 | case LOC_REGISTER: |
| 1282 | case LOC_BASEREG: |
| 1283 | if (type == 'L') /* collecting Locals */ |
| 1284 | { |
| 1285 | count++; |
| 1286 | collect_symbol (collect, sym); |
| 1287 | } |
| 1288 | break; |
| 1289 | case LOC_ARG: |
| 1290 | case LOC_LOCAL_ARG: |
| 1291 | case LOC_REF_ARG: |
| 1292 | case LOC_REGPARM: |
| 1293 | case LOC_REGPARM_ADDR: |
| 1294 | case LOC_BASEREG_ARG: |
| 1295 | if (type == 'A') /* collecting Arguments */ |
| 1296 | { |
| 1297 | count++; |
| 1298 | collect_symbol (collect, sym); |
| 1299 | } |
| 1300 | } |
| 1301 | } |
| 1302 | if (BLOCK_FUNCTION (block)) |
| 1303 | break; |
| 1304 | else |
| 1305 | block = BLOCK_SUPERBLOCK (block); |
| 1306 | } |
| 1307 | if (count == 0) |
| 1308 | warning ("No %s found in scope.", type == 'L' ? "locals" : "args"); |
| 1309 | } |
| 1310 | |
| 1311 | /* worker function */ |
| 1312 | static void |
| 1313 | clear_collection_list (list) |
| 1314 | struct collection_list *list; |
| 1315 | { |
| 1316 | list->next_memrange = 0; |
| 1317 | memset (list->regs_mask, 0, sizeof (list->regs_mask)); |
| 1318 | } |
| 1319 | |
| 1320 | /* reduce a collection list to string form (for gdb protocol) */ |
| 1321 | static char * |
| 1322 | stringify_collection_list (list, string) |
| 1323 | struct collection_list *list; |
| 1324 | char *string; |
| 1325 | { |
| 1326 | char *end = string; |
| 1327 | long i; |
| 1328 | |
| 1329 | for (i = sizeof (list->regs_mask) - 1; i > 0; i--) |
| 1330 | if (list->regs_mask[i] != 0) /* skip leading zeroes in regs_mask */ |
| 1331 | break; |
| 1332 | if (list->regs_mask[i] != 0) /* prepare to send regs_mask to the stub */ |
| 1333 | { |
| 1334 | if (info_verbose) |
| 1335 | printf_filtered ("\nCollecting registers (mask): 0x"); |
| 1336 | *end++='R'; |
| 1337 | for (; i >= 0; i--) |
| 1338 | { |
| 1339 | if (info_verbose) |
| 1340 | printf_filtered ("%02X", list->regs_mask[i]); |
| 1341 | sprintf (end, "%02X", list->regs_mask[i]); |
| 1342 | end += 2; |
| 1343 | } |
| 1344 | } |
| 1345 | if (info_verbose) |
| 1346 | printf_filtered ("\n"); |
| 1347 | if (list->next_memrange > 0 && info_verbose) |
| 1348 | printf_filtered ("Collecting memranges: \n"); |
| 1349 | for (i = 0; i < list->next_memrange; i++) |
| 1350 | { |
| 1351 | if (info_verbose) |
| 1352 | printf_filtered ("(%d, 0x%x, %d)\n", |
| 1353 | list->list[i].type, |
| 1354 | list->list[i].start, |
| 1355 | list->list[i].end - list->list[i].start); |
| 1356 | sprintf (end, "M%X,%X,%X", |
| 1357 | list->list[i].type, |
| 1358 | list->list[i].start, |
| 1359 | list->list[i].end - list->list[i].start); |
| 1360 | end += strlen (end); |
| 1361 | } |
| 1362 | if (end == string) |
| 1363 | return NULL; |
| 1364 | else |
| 1365 | return string; |
| 1366 | } |
| 1367 | |
| 1368 | /* render all actions into gdb protocol */ |
| 1369 | static void |
| 1370 | encode_actions (t, tdp_actions, step_count, stepping_actions) |
| 1371 | struct tracepoint *t; |
| 1372 | char **tdp_actions; |
| 1373 | unsigned long *step_count; |
| 1374 | char **stepping_actions; |
| 1375 | { |
| 1376 | static char tdp_buff[2048], step_buff[2048]; |
| 1377 | char *action_exp; |
| 1378 | struct expression *exp; |
| 1379 | struct action_line *action; |
| 1380 | bfd_signed_vma offset; |
| 1381 | long i; |
| 1382 | value_ptr tempval; |
| 1383 | struct collection_list *collect; |
| 1384 | struct cmd_list_element *cmd; |
| 1385 | |
| 1386 | clear_collection_list (&tracepoint_list); |
| 1387 | clear_collection_list (&stepping_list); |
| 1388 | collect = &tracepoint_list; |
| 1389 | |
| 1390 | *tdp_actions = NULL; |
| 1391 | *stepping_actions = NULL; |
| 1392 | |
| 1393 | for (action = t->actions; action; action = action->next) |
| 1394 | { |
| 1395 | action_exp = action->action; |
| 1396 | while (isspace (*action_exp)) |
| 1397 | action_exp++; |
| 1398 | |
| 1399 | if (*action_exp == '#') /* comment line */ |
| 1400 | return; |
| 1401 | |
| 1402 | cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1); |
| 1403 | if (cmd == 0) |
| 1404 | error ("Bad action list item: %s", action_exp); |
| 1405 | |
| 1406 | if (cmd->function.cfunc == collect_pseudocommand) |
| 1407 | { |
| 1408 | do { /* repeat over a comma-separated list */ |
| 1409 | while (isspace (*action_exp)) |
| 1410 | action_exp++; |
| 1411 | |
| 1412 | if (0 == strncasecmp ("$reg", action_exp, 4)) |
| 1413 | { |
| 1414 | for (i = 0; i < NUM_REGS; i++) |
| 1415 | add_register (collect, i); |
| 1416 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1417 | } |
| 1418 | else if (0 == strncasecmp ("$arg", action_exp, 4)) |
| 1419 | { |
| 1420 | add_local_symbols (collect, t->address, 'A'); |
| 1421 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1422 | } |
| 1423 | else if (0 == strncasecmp ("$loc", action_exp, 4)) |
| 1424 | { |
| 1425 | add_local_symbols (collect, t->address, 'L'); |
| 1426 | action_exp = strchr (action_exp, ','); /* more? */ |
| 1427 | } |
| 1428 | else if (action_exp[0] == '$' && |
| 1429 | action_exp[1] == '(') /* literal memrange */ |
| 1430 | { |
| 1431 | long typecode, size; |
| 1432 | bfd_signed_vma offset; |
| 1433 | |
| 1434 | action_exp = parse_and_eval_memrange (action_exp, |
| 1435 | t->address, |
| 1436 | &typecode, |
| 1437 | &offset, |
| 1438 | &size); |
| 1439 | add_memrange (collect, typecode, offset, size); |
| 1440 | } |
| 1441 | else |
| 1442 | { |
| 1443 | unsigned long addr, len; |
| 1444 | |
| 1445 | exp = parse_exp_1 (&action_exp, block_for_pc (t->address), 1); |
| 1446 | switch (exp->elts[0].opcode) { |
| 1447 | case OP_REGISTER: |
| 1448 | i = exp->elts[1].longconst; |
| 1449 | if (info_verbose) |
| 1450 | printf_filtered ("OP_REGISTER: "); |
| 1451 | add_register (collect, i); |
| 1452 | break; |
| 1453 | |
| 1454 | case UNOP_MEMVAL: |
| 1455 | /* safe because we know it's a simple expression */ |
| 1456 | tempval = evaluate_expression (exp); |
| 1457 | addr = VALUE_ADDRESS (tempval) + VALUE_OFFSET (tempval); |
| 1458 | len = TYPE_LENGTH (check_typedef (exp->elts[1].type)); |
| 1459 | add_memrange (collect, -1, addr, len); |
| 1460 | break; |
| 1461 | |
| 1462 | case OP_VAR_VALUE: |
| 1463 | collect_symbol (collect, exp->elts[2].symbol); |
| 1464 | break; |
| 1465 | #if 0 |
| 1466 | case OP_LONG: |
| 1467 | addr = exp->elts[2].longconst; |
| 1468 | if (*action_exp == ':') |
| 1469 | { |
| 1470 | exp = parse_exp_1 (&action_exp, |
| 1471 | block_for_pc (t->address), |
| 1472 | 1); |
| 1473 | if (exp->elts[0].opcode == OP_LONG) |
| 1474 | len = exp->elts[2].longconst; |
| 1475 | else |
| 1476 | error ("length field requires a literal long const"); |
| 1477 | } |
| 1478 | else |
| 1479 | len = 4; |
| 1480 | |
| 1481 | add_memrange (collect, -1, addr, len); |
| 1482 | break; |
| 1483 | #endif |
| 1484 | } |
| 1485 | } |
| 1486 | } while (action_exp && *action_exp++ == ','); |
| 1487 | } |
| 1488 | else if (cmd->function.cfunc == while_stepping_pseudocommand) |
| 1489 | { |
| 1490 | collect = &stepping_list; |
| 1491 | } |
| 1492 | else if (cmd->function.cfunc == end_actions_pseudocommand) |
| 1493 | { |
| 1494 | if (collect == &stepping_list) /* end stepping actions */ |
| 1495 | collect = &tracepoint_list; |
| 1496 | else |
| 1497 | break; /* end tracepoint actions */ |
| 1498 | } |
| 1499 | } |
| 1500 | memrange_sortmerge (&tracepoint_list); |
| 1501 | memrange_sortmerge (&stepping_list); |
| 1502 | |
| 1503 | *tdp_actions = stringify_collection_list (&tracepoint_list, &tdp_buff); |
| 1504 | *stepping_actions = stringify_collection_list (&stepping_list, &step_buff); |
| 1505 | } |
| 1506 | |
| 1507 | static char target_buf[2048]; |
| 1508 | |
| 1509 | /* tstart command: |
| 1510 | |
| 1511 | Tell target to lear any previous trace experiment. |
| 1512 | Walk the list of tracepoints, and send them (and their actions) |
| 1513 | to the target. If no errors, |
| 1514 | Tell target to start a new trace experiment. */ |
| 1515 | |
| 1516 | static void |
| 1517 | trace_start_command (args, from_tty) |
| 1518 | char *args; |
| 1519 | int from_tty; |
| 1520 | { /* STUB_COMM MOSTLY_IMPLEMENTED */ |
| 1521 | struct tracepoint *t; |
| 1522 | char buf[2048]; |
| 1523 | char *tdp_actions; |
| 1524 | char *stepping_actions; |
| 1525 | unsigned long step_count; |
| 1526 | |
| 1527 | dont_repeat (); /* like "run", dangerous to repeat accidentally */ |
| 1528 | |
| 1529 | if (target_is_remote ()) |
| 1530 | { |
| 1531 | putpkt ("QTinit"); |
| 1532 | remote_get_noisy_reply (target_buf); |
| 1533 | if (strcmp (target_buf, "OK")) |
| 1534 | error ("Target does not support this command."); |
| 1535 | |
| 1536 | ALL_TRACEPOINTS (t) |
| 1537 | { |
| 1538 | int ss_count; /* if actions include singlestepping */ |
| 1539 | int disable_mask; /* ??? */ |
| 1540 | int enable_mask; /* ??? */ |
| 1541 | |
| 1542 | sprintf (buf, "QTDP:%x:%x:%c:%x:%x", t->number, t->address, |
| 1543 | t->enabled == enabled ? 'E' : 'D', |
| 1544 | t->step_count, t->pass_count); |
| 1545 | if (t->actions) |
| 1546 | { |
| 1547 | encode_actions (t, &tdp_actions, &step_count, &stepping_actions); |
| 1548 | /* do_single_steps (t); */ |
| 1549 | if (tdp_actions) |
| 1550 | { |
| 1551 | if (strlen (buf) + strlen (tdp_actions) >= sizeof (buf)) |
| 1552 | error ("Actions for tracepoint %d too complex; please simplify.", |
| 1553 | t->number); |
| 1554 | strcat (buf, tdp_actions); |
| 1555 | } |
| 1556 | if (stepping_actions) |
| 1557 | { |
| 1558 | strcat (buf, "S"); |
| 1559 | if (strlen (buf) + strlen (stepping_actions) >= sizeof (buf)) |
| 1560 | error ("Actions for tracepoint %d too complex; please simplify.", |
| 1561 | t->number); |
| 1562 | strcat (buf, stepping_actions); |
| 1563 | } |
| 1564 | } |
| 1565 | putpkt (buf); |
| 1566 | remote_get_noisy_reply (target_buf); |
| 1567 | if (strcmp (target_buf, "OK")) |
| 1568 | error ("Target does not support tracepoints."); |
| 1569 | } |
| 1570 | putpkt ("QTStart"); |
| 1571 | remote_get_noisy_reply (target_buf); |
| 1572 | if (strcmp (target_buf, "OK")) |
| 1573 | error ("Bogus reply from target: %s", target_buf); |
| 1574 | set_traceframe_num (-1); /* all old traceframes invalidated */ |
| 1575 | set_tracepoint_num (-1); |
| 1576 | set_traceframe_context(-1); |
| 1577 | } |
| 1578 | else |
| 1579 | printf_filtered ("Trace can only be run on remote targets.\n"); |
| 1580 | } |
| 1581 | |
| 1582 | /* tstop command */ |
| 1583 | static void |
| 1584 | trace_stop_command (args, from_tty) |
| 1585 | char *args; |
| 1586 | int from_tty; |
| 1587 | { /* STUB_COMM IS_IMPLEMENTED */ |
| 1588 | if (target_is_remote ()) |
| 1589 | { |
| 1590 | putpkt ("QTStop"); |
| 1591 | remote_get_noisy_reply (target_buf); |
| 1592 | if (strcmp (target_buf, "OK")) |
| 1593 | error ("Bogus reply from target: %s", target_buf); |
| 1594 | } |
| 1595 | else |
| 1596 | error ("Trace can only be run on remote targets."); |
| 1597 | } |
| 1598 | |
| 1599 | /* tstatus command */ |
| 1600 | static void |
| 1601 | trace_status_command (args, from_tty) |
| 1602 | char *args; |
| 1603 | int from_tty; |
| 1604 | { /* STUB_COMM IS_IMPLEMENTED */ |
| 1605 | if (target_is_remote ()) |
| 1606 | { |
| 1607 | putpkt ("qTStatus"); |
| 1608 | remote_get_noisy_reply (target_buf); |
| 1609 | if (strcmp (target_buf, "OK")) |
| 1610 | error ("Bogus reply from target: %s", target_buf); |
| 1611 | } |
| 1612 | else |
| 1613 | error ("Trace can only be run on remote targets."); |
| 1614 | } |
| 1615 | |
| 1616 | /* Worker function for the various flavors of the tfind command */ |
| 1617 | static void |
| 1618 | finish_tfind_command (msg, from_tty) |
| 1619 | char *msg; |
| 1620 | int from_tty; |
| 1621 | { |
| 1622 | int target_frameno = -1, target_tracept = -1; |
| 1623 | CORE_ADDR old_frame_addr; |
| 1624 | struct symbol *old_func; |
| 1625 | char *reply; |
| 1626 | |
| 1627 | old_frame_addr = FRAME_FP (get_current_frame ()); |
| 1628 | old_func = find_pc_function (read_pc ()); |
| 1629 | |
| 1630 | putpkt (msg); |
| 1631 | reply = remote_get_noisy_reply (msg); |
| 1632 | |
| 1633 | while (reply && *reply) |
| 1634 | switch (*reply) { |
| 1635 | case 'F': |
| 1636 | if ((target_frameno = strtol (++reply, &reply, 16)) == -1) |
| 1637 | { |
| 1638 | /* A request for a non-existant trace frame has failed. |
| 1639 | Our response will be different, depending on FROM_TTY: |
| 1640 | |
| 1641 | If FROM_TTY is true, meaning that this command was |
| 1642 | typed interactively by the user, then give an error |
| 1643 | and DO NOT change the state of traceframe_number etc. |
| 1644 | |
| 1645 | However if FROM_TTY is false, meaning that we're either |
| 1646 | in a script, a loop, or a user-defined command, then |
| 1647 | DON'T give an error, but DO change the state of |
| 1648 | traceframe_number etc. to invalid. |
| 1649 | |
| 1650 | The rationalle is that if you typed the command, you |
| 1651 | might just have committed a typo or something, and you'd |
| 1652 | like to NOT lose your current debugging state. However |
| 1653 | if you're in a user-defined command or especially in a |
| 1654 | loop, then you need a way to detect that the command |
| 1655 | failed WITHOUT aborting. This allows you to write |
| 1656 | scripts that search thru the trace buffer until the end, |
| 1657 | and then continue on to do something else. */ |
| 1658 | |
| 1659 | if (from_tty) |
| 1660 | error ("Target failed to find requested trace frame."); |
| 1661 | else |
| 1662 | { |
| 1663 | if (info_verbose) |
| 1664 | printf_filtered ("End of trace buffer.\n"); |
| 1665 | /* The following will not recurse, since it's special-cased */ |
| 1666 | trace_find_command ("-1", from_tty); |
| 1667 | reply = NULL; /* break out of loop, |
| 1668 | (avoid recursive nonsense) */ |
| 1669 | } |
| 1670 | } |
| 1671 | break; |
| 1672 | case 'T': |
| 1673 | if ((target_tracept = strtol (++reply, &reply, 16)) == -1) |
| 1674 | error ("Target failed to find requested trace frame."); |
| 1675 | break; |
| 1676 | case 'O': /* "OK"? */ |
| 1677 | if (reply[1] == 'K' && reply[2] == '\0') |
| 1678 | reply += 2; |
| 1679 | else |
| 1680 | error ("Bogus reply from target: %s", reply); |
| 1681 | break; |
| 1682 | default: |
| 1683 | error ("Bogus reply from target: %s", reply); |
| 1684 | } |
| 1685 | |
| 1686 | flush_cached_frames (); |
| 1687 | registers_changed (); |
| 1688 | select_frame (get_current_frame (), 0); |
| 1689 | set_traceframe_num (target_frameno); |
| 1690 | set_tracepoint_num (target_tracept); |
| 1691 | if (target_frameno == -1) |
| 1692 | set_traceframe_context (-1); |
| 1693 | else |
| 1694 | set_traceframe_context (read_pc ()); |
| 1695 | |
| 1696 | if (from_tty) |
| 1697 | { |
| 1698 | int source_only; |
| 1699 | |
| 1700 | /* NOTE: in immitation of the step command, try to determine |
| 1701 | whether we have made a transition from one function to another. |
| 1702 | If so, we'll print the "stack frame" (ie. the new function and |
| 1703 | it's arguments) -- otherwise we'll just show the new source line. |
| 1704 | |
| 1705 | This determination is made by checking (1) whether the current |
| 1706 | function has changed, and (2) whether the current FP has changed. |
| 1707 | Hack: if the FP wasn't collected, either at the current or the |
| 1708 | previous frame, assume that the FP has NOT changed. */ |
| 1709 | |
| 1710 | if (old_func == find_pc_function (read_pc ()) && |
| 1711 | (old_frame_addr == 0 || |
| 1712 | FRAME_FP (get_current_frame ()) == 0 || |
| 1713 | old_frame_addr == FRAME_FP (get_current_frame ()))) |
| 1714 | source_only = -1; |
| 1715 | else |
| 1716 | source_only = 1; |
| 1717 | |
| 1718 | print_stack_frame (selected_frame, selected_frame_level, source_only); |
| 1719 | do_displays (); |
| 1720 | } |
| 1721 | } |
| 1722 | |
| 1723 | /* trace_find_command takes a trace frame number n, |
| 1724 | sends "QTFrame:<n>" to the target, |
| 1725 | and accepts a reply that may contain several optional pieces |
| 1726 | of information: a frame number, a tracepoint number, and an |
| 1727 | indication of whether this is a trap frame or a stepping frame. |
| 1728 | |
| 1729 | The minimal response is just "OK" (which indicates that the |
| 1730 | target does not give us a frame number or a tracepoint number). |
| 1731 | Instead of that, the target may send us a string containing |
| 1732 | any combination of: |
| 1733 | F<hexnum> (gives the selected frame number) |
| 1734 | T<hexnum> (gives the selected tracepoint number) |
| 1735 | */ |
| 1736 | |
| 1737 | /* tfind command */ |
| 1738 | static void |
| 1739 | trace_find_command (args, from_tty) |
| 1740 | char *args; |
| 1741 | int from_tty; |
| 1742 | { /* STUB_COMM PART_IMPLEMENTED */ |
| 1743 | /* this should only be called with a numeric argument */ |
| 1744 | int frameno = -1; |
| 1745 | int target_frameno = -1, target_tracept = -1, target_stepfrm = 0; |
| 1746 | char *tmp; |
| 1747 | |
| 1748 | if (target_is_remote ()) |
| 1749 | { |
| 1750 | if (args == 0 || *args == 0) |
| 1751 | { /* TFIND with no args means find NEXT trace frame. */ |
| 1752 | if (traceframe_number == -1) |
| 1753 | frameno = 0; /* "next" is first one */ |
| 1754 | else |
| 1755 | frameno = traceframe_number + 1; |
| 1756 | } |
| 1757 | else if (0 == strcmp (args, "-")) |
| 1758 | { |
| 1759 | if (traceframe_number == -1) |
| 1760 | error ("not debugging trace buffer"); |
| 1761 | else if (from_tty && traceframe_number == 0) |
| 1762 | error ("already at start of trace buffer"); |
| 1763 | |
| 1764 | frameno = traceframe_number - 1; |
| 1765 | } |
| 1766 | else |
| 1767 | frameno = parse_and_eval_address (args); |
| 1768 | |
| 1769 | sprintf (target_buf, "QTFrame:%x", frameno); |
| 1770 | #if 0 |
| 1771 | putpkt (target_buf); |
| 1772 | tmp = remote_get_noisy_reply (target_buf); |
| 1773 | |
| 1774 | if (frameno == -1) /* end trace debugging */ |
| 1775 | { /* hopefully the stub has complied! */ |
| 1776 | if (0 != strcmp (tmp, "OK")) |
| 1777 | error ("Bogus response from target: %s", tmp); |
| 1778 | |
| 1779 | finish_tfind_command (NULL, from_tty); |
| 1780 | } |
| 1781 | else |
| 1782 | finish_tfind_command (tmp, from_tty); |
| 1783 | #else |
| 1784 | finish_tfind_command (target_buf, from_tty); |
| 1785 | #endif |
| 1786 | } |
| 1787 | else |
| 1788 | error ("Trace can only be run on remote targets."); |
| 1789 | } |
| 1790 | |
| 1791 | /* tfind end */ |
| 1792 | static void |
| 1793 | trace_find_end_command (args, from_tty) |
| 1794 | char *args; |
| 1795 | int from_tty; |
| 1796 | { |
| 1797 | trace_find_command ("-1", from_tty); |
| 1798 | } |
| 1799 | |
| 1800 | /* tfind none */ |
| 1801 | static void |
| 1802 | trace_find_none_command (args, from_tty) |
| 1803 | char *args; |
| 1804 | int from_tty; |
| 1805 | { |
| 1806 | trace_find_command ("-1", from_tty); |
| 1807 | } |
| 1808 | |
| 1809 | /* tfind start */ |
| 1810 | static void |
| 1811 | trace_find_start_command (args, from_tty) |
| 1812 | char *args; |
| 1813 | int from_tty; |
| 1814 | { |
| 1815 | trace_find_command ("0", from_tty); |
| 1816 | } |
| 1817 | |
| 1818 | /* tfind pc command */ |
| 1819 | static void |
| 1820 | trace_find_pc_command (args, from_tty) |
| 1821 | char *args; |
| 1822 | int from_tty; |
| 1823 | { /* STUB_COMM PART_IMPLEMENTED */ |
| 1824 | CORE_ADDR pc; |
| 1825 | int target_frameno; |
| 1826 | char *tmp; |
| 1827 | |
| 1828 | if (target_is_remote ()) |
| 1829 | { |
| 1830 | if (args == 0 || *args == 0) |
| 1831 | pc = read_pc (); /* default is current pc */ |
| 1832 | else |
| 1833 | pc = parse_and_eval_address (args); |
| 1834 | |
| 1835 | sprintf (target_buf, "QTFrame:pc:%x", pc); |
| 1836 | #if 0 |
| 1837 | putpkt (target_buf); |
| 1838 | tmp = remote_get_noisy_reply (target_buf); |
| 1839 | |
| 1840 | finish_tfind_command (tmp, from_tty); |
| 1841 | #else |
| 1842 | finish_tfind_command (target_buf, from_tty); |
| 1843 | #endif |
| 1844 | } |
| 1845 | else |
| 1846 | error ("Trace can only be run on remote targets."); |
| 1847 | } |
| 1848 | |
| 1849 | /* tfind tracepoint command */ |
| 1850 | static void |
| 1851 | trace_find_tracepoint_command (args, from_tty) |
| 1852 | char *args; |
| 1853 | int from_tty; |
| 1854 | { /* STUB_COMM PART_IMPLEMENTED */ |
| 1855 | int target_frameno, tdp; |
| 1856 | char buf[40], *tmp; |
| 1857 | |
| 1858 | if (target_is_remote ()) |
| 1859 | { |
| 1860 | if (args == 0 || *args == 0) |
| 1861 | if (tracepoint_number == -1) |
| 1862 | error ("No current tracepoint -- please supply an argument."); |
| 1863 | else |
| 1864 | tdp = tracepoint_number; /* default is current TDP */ |
| 1865 | else |
| 1866 | tdp = parse_and_eval_address (args); |
| 1867 | |
| 1868 | sprintf (target_buf, "QTFrame:tdp:%x", tdp); |
| 1869 | #if 0 |
| 1870 | putpkt (target_buf); |
| 1871 | tmp = remote_get_noisy_reply (target_buf); |
| 1872 | |
| 1873 | finish_tfind_command (tmp, from_tty); |
| 1874 | #else |
| 1875 | finish_tfind_command (target_buf, from_tty); |
| 1876 | #endif |
| 1877 | } |
| 1878 | else |
| 1879 | error ("Trace can only be run on remote targets."); |
| 1880 | } |
| 1881 | |
| 1882 | /* TFIND LINE command: |
| 1883 | |
| 1884 | This command will take a sourceline for argument, just like BREAK |
| 1885 | or TRACE (ie. anything that "decode_line_1" can handle). |
| 1886 | |
| 1887 | With no argument, this command will find the next trace frame |
| 1888 | corresponding to a source line OTHER THAN THE CURRENT ONE. */ |
| 1889 | |
| 1890 | static void |
| 1891 | trace_find_line_command (args, from_tty) |
| 1892 | char *args; |
| 1893 | int from_tty; |
| 1894 | { /* STUB_COMM PART_IMPLEMENTED */ |
| 1895 | static CORE_ADDR start_pc, end_pc; |
| 1896 | struct symtabs_and_lines sals; |
| 1897 | struct symtab_and_line sal; |
| 1898 | int target_frameno; |
| 1899 | char *tmp; |
| 1900 | struct cleanup *old_chain; |
| 1901 | |
| 1902 | if (target_is_remote ()) |
| 1903 | { |
| 1904 | if (args == 0 || *args == 0) |
| 1905 | { |
| 1906 | sal = find_pc_line ((get_current_frame ())->pc, 0); |
| 1907 | sals.nelts = 1; |
| 1908 | sals.sals = (struct symtab_and_line *) |
| 1909 | xmalloc (sizeof (struct symtab_and_line)); |
| 1910 | sals.sals[0] = sal; |
| 1911 | } |
| 1912 | else |
| 1913 | { |
| 1914 | sals = decode_line_spec (args, 1); |
| 1915 | sal = sals.sals[0]; |
| 1916 | } |
| 1917 | |
| 1918 | old_chain = make_cleanup (free, sals.sals); |
| 1919 | if (sal.symtab == 0) |
| 1920 | { |
| 1921 | printf_filtered ("TFIND: No line number information available"); |
| 1922 | if (sal.pc != 0) |
| 1923 | { |
| 1924 | /* This is useful for "info line *0x7f34". If we can't tell the |
| 1925 | user about a source line, at least let them have the symbolic |
| 1926 | address. */ |
| 1927 | printf_filtered (" for address "); |
| 1928 | wrap_here (" "); |
| 1929 | print_address (sal.pc, gdb_stdout); |
| 1930 | printf_filtered (";\n -- will attempt to find by PC. \n"); |
| 1931 | } |
| 1932 | else |
| 1933 | { |
| 1934 | printf_filtered (".\n"); |
| 1935 | return; /* no line, no PC; what can we do? */ |
| 1936 | } |
| 1937 | } |
| 1938 | else if (sal.line > 0 |
| 1939 | && find_line_pc_range (sal, &start_pc, &end_pc)) |
| 1940 | { |
| 1941 | if (start_pc == end_pc) |
| 1942 | { |
| 1943 | printf_filtered ("Line %d of \"%s\"", |
| 1944 | sal.line, sal.symtab->filename); |
| 1945 | wrap_here (" "); |
| 1946 | printf_filtered (" is at address "); |
| 1947 | print_address (start_pc, gdb_stdout); |
| 1948 | wrap_here (" "); |
| 1949 | printf_filtered (" but contains no code.\n"); |
| 1950 | sal = find_pc_line (start_pc, 0); |
| 1951 | if (sal.line > 0 && |
| 1952 | find_line_pc_range (sal, &start_pc, &end_pc) && |
| 1953 | start_pc != end_pc) |
| 1954 | printf_filtered ("Attempting to find line %d instead.\n", |
| 1955 | sal.line); |
| 1956 | else |
| 1957 | error ("Cannot find a good line."); |
| 1958 | } |
| 1959 | } |
| 1960 | else |
| 1961 | /* Is there any case in which we get here, and have an address |
| 1962 | which the user would want to see? If we have debugging symbols |
| 1963 | and no line numbers? */ |
| 1964 | error ("Line number %d is out of range for \"%s\".\n", |
| 1965 | sal.line, sal.symtab->filename); |
| 1966 | |
| 1967 | if (args && *args) /* find within range of stated line */ |
| 1968 | sprintf (target_buf, "QTFrame:range:%x:%x", start_pc, end_pc - 1); |
| 1969 | else /* find OUTSIDE OF range of CURRENT line */ |
| 1970 | sprintf (target_buf, "QTFrame:outside:%x:%x", start_pc, end_pc - 1); |
| 1971 | #if 0 |
| 1972 | putpkt (target_buf); |
| 1973 | tmp = remote_get_noisy_reply (target_buf); |
| 1974 | |
| 1975 | finish_tfind_command (tmp, from_tty); |
| 1976 | #else |
| 1977 | finish_tfind_command (target_buf, from_tty); |
| 1978 | #endif |
| 1979 | do_cleanups (old_chain); |
| 1980 | } |
| 1981 | else |
| 1982 | error ("Trace can only be run on remote targets."); |
| 1983 | } |
| 1984 | |
| 1985 | /* tfind range command */ |
| 1986 | static void |
| 1987 | trace_find_range_command (args, from_tty) |
| 1988 | char *args; |
| 1989 | int from_tty; |
| 1990 | { /* STUB_COMM PART_IMPLEMENTED */ |
| 1991 | static CORE_ADDR start, stop; |
| 1992 | int target_frameno; |
| 1993 | char *tmp; |
| 1994 | |
| 1995 | if (target_is_remote ()) |
| 1996 | { |
| 1997 | if (args == 0 || *args == 0) |
| 1998 | { /* XXX FIXME: what should default behavior be? */ |
| 1999 | printf_filtered ("Usage: tfind range <startaddr>,<endaddr>\n"); |
| 2000 | return; |
| 2001 | } |
| 2002 | |
| 2003 | if (0 != (tmp = strchr (args, ',' ))) |
| 2004 | { |
| 2005 | *tmp++ = '\0'; /* terminate start address */ |
| 2006 | while (isspace (*tmp)) |
| 2007 | tmp++; |
| 2008 | start = parse_and_eval_address (args); |
| 2009 | stop = parse_and_eval_address (tmp); |
| 2010 | } |
| 2011 | else |
| 2012 | { /* no explicit end address? */ |
| 2013 | start = parse_and_eval_address (args); |
| 2014 | stop = start + 1; /* ??? */ |
| 2015 | } |
| 2016 | |
| 2017 | sprintf (target_buf, "QTFrame:range:%x:%x", start, stop); |
| 2018 | #if 0 |
| 2019 | putpkt (target_buf); |
| 2020 | tmp = remote_get_noisy_reply (target_buf); |
| 2021 | |
| 2022 | finish_tfind_command (tmp, from_tty); |
| 2023 | #else |
| 2024 | finish_tfind_command (target_buf, from_tty); |
| 2025 | #endif |
| 2026 | } |
| 2027 | else |
| 2028 | error ("Trace can only be run on remote targets."); |
| 2029 | } |
| 2030 | |
| 2031 | /* tfind outside command */ |
| 2032 | static void |
| 2033 | trace_find_outside_command (args, from_tty) |
| 2034 | char *args; |
| 2035 | int from_tty; |
| 2036 | { /* STUB_COMM PART_IMPLEMENTED */ |
| 2037 | CORE_ADDR start, stop; |
| 2038 | int target_frameno; |
| 2039 | char *tmp; |
| 2040 | |
| 2041 | if (target_is_remote ()) |
| 2042 | { |
| 2043 | if (args == 0 || *args == 0) |
| 2044 | { /* XXX FIXME: what should default behavior be? */ |
| 2045 | printf_filtered ("Usage: tfind outside <startaddr>,<endaddr>\n"); |
| 2046 | return; |
| 2047 | } |
| 2048 | |
| 2049 | if (0 != (tmp = strchr (args, ',' ))) |
| 2050 | { |
| 2051 | *tmp++ = '\0'; /* terminate start address */ |
| 2052 | while (isspace (*tmp)) |
| 2053 | tmp++; |
| 2054 | start = parse_and_eval_address (args); |
| 2055 | stop = parse_and_eval_address (tmp); |
| 2056 | } |
| 2057 | else |
| 2058 | { /* no explicit end address? */ |
| 2059 | start = parse_and_eval_address (args); |
| 2060 | stop = start + 1; /* ??? */ |
| 2061 | } |
| 2062 | |
| 2063 | sprintf (target_buf, "QTFrame:outside:%x:%x", start, stop); |
| 2064 | #if 0 |
| 2065 | putpkt (target_buf); |
| 2066 | tmp = remote_get_noisy_reply (target_buf); |
| 2067 | |
| 2068 | finish_tfind_command (tmp, from_tty); |
| 2069 | #else |
| 2070 | finish_tfind_command (target_buf, from_tty); |
| 2071 | #endif |
| 2072 | } |
| 2073 | else |
| 2074 | error ("Trace can only be run on remote targets."); |
| 2075 | } |
| 2076 | |
| 2077 | /* save-tracepoints command */ |
| 2078 | static void |
| 2079 | tracepoint_save_command (args, from_tty) |
| 2080 | char *args; |
| 2081 | int from_tty; |
| 2082 | { |
| 2083 | struct tracepoint *tp; |
| 2084 | struct action_line *line; |
| 2085 | FILE *fp; |
| 2086 | char *i1 = " ", *i2 = " "; |
| 2087 | char *indent, *actionline; |
| 2088 | |
| 2089 | if (args == 0 || *args == 0) |
| 2090 | error ("Argument required (file name in which to save tracepoints"); |
| 2091 | |
| 2092 | if (tracepoint_chain == 0) |
| 2093 | { |
| 2094 | warning ("save-tracepoints: no tracepoints to save.\n"); |
| 2095 | return; |
| 2096 | } |
| 2097 | |
| 2098 | if (!(fp = fopen (args, "w"))) |
| 2099 | error ("Unable to open file '%s' for saving tracepoints"); |
| 2100 | |
| 2101 | ALL_TRACEPOINTS (tp) |
| 2102 | { |
| 2103 | if (tp->addr_string) |
| 2104 | fprintf (fp, "trace %s\n", tp->addr_string); |
| 2105 | else |
| 2106 | fprintf (fp, "trace *0x%x\n", tp->address); |
| 2107 | |
| 2108 | if (tp->pass_count) |
| 2109 | fprintf (fp, " passcount %d\n", tp->pass_count); |
| 2110 | |
| 2111 | if (tp->actions) |
| 2112 | { |
| 2113 | fprintf (fp, " actions\n"); |
| 2114 | indent = i1; |
| 2115 | for (line = tp->actions; line; line = line->next) |
| 2116 | { |
| 2117 | struct cmd_list_element *cmd; |
| 2118 | |
| 2119 | actionline = line->action; |
| 2120 | while (isspace(*actionline)) |
| 2121 | actionline++; |
| 2122 | |
| 2123 | fprintf (fp, "%s%s\n", indent, actionline); |
| 2124 | if (*actionline != '#') /* skip for comment lines */ |
| 2125 | { |
| 2126 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); |
| 2127 | if (cmd == 0) |
| 2128 | error ("Bad action list item: %s", actionline); |
| 2129 | if (cmd->function.cfunc == while_stepping_pseudocommand) |
| 2130 | indent = i2; |
| 2131 | else if (cmd->function.cfunc == end_actions_pseudocommand) |
| 2132 | indent = i1; |
| 2133 | } |
| 2134 | } |
| 2135 | } |
| 2136 | } |
| 2137 | fclose (fp); |
| 2138 | if (from_tty) |
| 2139 | printf_filtered ("Tracepoints saved to file '%s'.\n", args); |
| 2140 | return; |
| 2141 | } |
| 2142 | |
| 2143 | /* info scope command: list the locals for a scope. */ |
| 2144 | static void |
| 2145 | scope_info (args, from_tty) |
| 2146 | char *args; |
| 2147 | int from_tty; |
| 2148 | { |
| 2149 | struct symtab_and_line sal; |
| 2150 | struct symtabs_and_lines sals; |
| 2151 | struct symbol *sym; |
| 2152 | struct minimal_symbol *msym; |
| 2153 | struct block *block; |
| 2154 | char **canonical, *symname, *save_args = args; |
| 2155 | int i, nsyms, count = 0; |
| 2156 | |
| 2157 | if (args == 0 || *args == 0) |
| 2158 | error ("requires an argument (function, line or *addr) to define a scope"); |
| 2159 | |
| 2160 | sals = decode_line_1 (&args, 1, NULL, 0, &canonical); |
| 2161 | if (sals.nelts == 0) |
| 2162 | return; /* presumably decode_line_1 has already warned */ |
| 2163 | |
| 2164 | /* Resolve line numbers to PC */ |
| 2165 | resolve_sal_pc (&sals.sals[0]); |
| 2166 | block = block_for_pc (sals.sals[0].pc); |
| 2167 | |
| 2168 | while (block != 0) |
| 2169 | { |
| 2170 | nsyms = BLOCK_NSYMS (block); |
| 2171 | for (i = 0; i < nsyms; i++) |
| 2172 | { |
| 2173 | if (count == 0) |
| 2174 | printf_filtered ("Scope for %s:\n", save_args); |
| 2175 | count++; |
| 2176 | sym = BLOCK_SYM (block, i); |
| 2177 | symname = SYMBOL_NAME (sym); |
| 2178 | if (symname == NULL || *symname == '\0') |
| 2179 | continue; /* probably botched, certainly useless */ |
| 2180 | |
| 2181 | printf_filtered ("Symbol %s is ", symname); |
| 2182 | switch (SYMBOL_CLASS (sym)) { |
| 2183 | default: |
| 2184 | case LOC_UNDEF: /* messed up symbol? */ |
| 2185 | printf_filtered ("a bogus symbol, class %d.\n", |
| 2186 | SYMBOL_CLASS (sym)); |
| 2187 | count--; /* don't count this one */ |
| 2188 | continue; |
| 2189 | case LOC_CONST: |
| 2190 | printf_filtered ("a constant with value %d (0x%x)", |
| 2191 | SYMBOL_VALUE (sym), SYMBOL_VALUE (sym)); |
| 2192 | break; |
| 2193 | case LOC_CONST_BYTES: |
| 2194 | printf_filtered ("constant bytes: "); |
| 2195 | if (SYMBOL_TYPE (sym)) |
| 2196 | for (i = 0; i < TYPE_LENGTH (SYMBOL_TYPE (sym)); i++) |
| 2197 | fprintf_filtered (gdb_stdout, " %02x", |
| 2198 | (unsigned) SYMBOL_VALUE_BYTES (sym) [i]); |
| 2199 | break; |
| 2200 | case LOC_STATIC: |
| 2201 | printf_filtered ("in static storage at address "); |
| 2202 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, gdb_stdout); |
| 2203 | break; |
| 2204 | case LOC_REGISTER: |
| 2205 | printf_filtered ("a local variable in register $%s", |
| 2206 | reg_names [SYMBOL_VALUE (sym)]); |
| 2207 | break; |
| 2208 | case LOC_ARG: |
| 2209 | case LOC_LOCAL_ARG: |
| 2210 | printf_filtered ("an argument at stack/frame offset %ld", |
| 2211 | SYMBOL_VALUE (sym)); |
| 2212 | break; |
| 2213 | case LOC_LOCAL: |
| 2214 | printf_filtered ("a local variable at frame offset %ld", |
| 2215 | SYMBOL_VALUE (sym)); |
| 2216 | break; |
| 2217 | case LOC_REF_ARG: |
| 2218 | printf_filtered ("a reference argument at offset %ld", |
| 2219 | SYMBOL_VALUE (sym)); |
| 2220 | break; |
| 2221 | case LOC_REGPARM: |
| 2222 | printf_filtered ("an argument in register $%s", |
| 2223 | reg_names[SYMBOL_VALUE (sym)]); |
| 2224 | break; |
| 2225 | case LOC_REGPARM_ADDR: |
| 2226 | printf_filtered ("the address of an argument, in register $%s", |
| 2227 | reg_names[SYMBOL_VALUE (sym)]); |
| 2228 | break; |
| 2229 | case LOC_TYPEDEF: |
| 2230 | printf_filtered ("a typedef.\n"); |
| 2231 | continue; |
| 2232 | case LOC_LABEL: |
| 2233 | printf_filtered ("a label at address "); |
| 2234 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, gdb_stdout); |
| 2235 | break; |
| 2236 | case LOC_BLOCK: |
| 2237 | printf_filtered ("a function at address "); |
| 2238 | print_address_numeric (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), 1, |
| 2239 | gdb_stdout); |
| 2240 | break; |
| 2241 | case LOC_BASEREG: |
| 2242 | printf_filtered ("a variable at offset %d from register $%s", |
| 2243 | SYMBOL_VALUE (sym), |
| 2244 | reg_names [SYMBOL_BASEREG (sym)]); |
| 2245 | break; |
| 2246 | case LOC_BASEREG_ARG: |
| 2247 | printf_filtered ("an argument at offset %d from register $%s", |
| 2248 | SYMBOL_VALUE (sym), |
| 2249 | reg_names [SYMBOL_BASEREG (sym)]); |
| 2250 | break; |
| 2251 | case LOC_UNRESOLVED: |
| 2252 | msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL); |
| 2253 | if (msym == NULL) |
| 2254 | printf_filtered ("Unresolved Static"); |
| 2255 | else |
| 2256 | { |
| 2257 | printf_filtered ("static storage at address "); |
| 2258 | print_address_numeric (SYMBOL_VALUE_ADDRESS (msym), 1, |
| 2259 | gdb_stdout); |
| 2260 | } |
| 2261 | break; |
| 2262 | case LOC_OPTIMIZED_OUT: |
| 2263 | printf_filtered ("optimized out.\n"); |
| 2264 | continue; |
| 2265 | } |
| 2266 | if (SYMBOL_TYPE (sym)) |
| 2267 | printf_filtered (", length %d.\n", |
| 2268 | TYPE_LENGTH (check_typedef (SYMBOL_TYPE (sym)))); |
| 2269 | } |
| 2270 | if (BLOCK_FUNCTION (block)) |
| 2271 | break; |
| 2272 | else |
| 2273 | block = BLOCK_SUPERBLOCK (block); |
| 2274 | } |
| 2275 | if (count <= 0) |
| 2276 | printf_filtered ("Scope for %s contains no locals or arguments.\n", |
| 2277 | save_args); |
| 2278 | } |
| 2279 | |
| 2280 | /* worker function (cleanup) */ |
| 2281 | static void |
| 2282 | replace_comma (comma) |
| 2283 | char *comma; |
| 2284 | { |
| 2285 | *comma = ','; |
| 2286 | } |
| 2287 | |
| 2288 | /* tdump command */ |
| 2289 | static void |
| 2290 | trace_dump_command (args, from_tty) |
| 2291 | char *args; |
| 2292 | int from_tty; |
| 2293 | { |
| 2294 | struct tracepoint *t; |
| 2295 | struct action_line *action; |
| 2296 | char *action_exp, *next_comma; |
| 2297 | struct cleanup *old_cleanups; |
| 2298 | int stepping_actions = 0; |
| 2299 | int stepping_frame = 0; |
| 2300 | |
| 2301 | if (tracepoint_number == -1) |
| 2302 | { |
| 2303 | warning ("No current trace frame."); |
| 2304 | return; |
| 2305 | } |
| 2306 | |
| 2307 | ALL_TRACEPOINTS (t) |
| 2308 | if (t->number == tracepoint_number) |
| 2309 | break; |
| 2310 | |
| 2311 | if (t == NULL) |
| 2312 | error ("No known tracepoint matches 'current' tracepoint #%d.", |
| 2313 | tracepoint_number); |
| 2314 | |
| 2315 | old_cleanups = make_cleanup (null_cleanup, NULL); |
| 2316 | |
| 2317 | printf_filtered ("Data collected at tracepoint %d, trace frame %d:\n", |
| 2318 | tracepoint_number, traceframe_number); |
| 2319 | |
| 2320 | /* The current frame is a trap frame if the frame PC is equal |
| 2321 | to the tracepoint PC. If not, then the current frame was |
| 2322 | collected during single-stepping. */ |
| 2323 | |
| 2324 | stepping_frame = (t->address != read_pc()); |
| 2325 | |
| 2326 | for (action = t->actions; action; action = action->next) |
| 2327 | { |
| 2328 | struct cmd_list_element *cmd; |
| 2329 | |
| 2330 | action_exp = action->action; |
| 2331 | while (isspace (*action_exp)) |
| 2332 | action_exp++; |
| 2333 | |
| 2334 | /* The collection actions to be done while stepping are |
| 2335 | bracketed by the commands "while-stepping" and "end". */ |
| 2336 | |
| 2337 | if (*action_exp == '#') /* comment line */ |
| 2338 | continue; |
| 2339 | |
| 2340 | cmd = lookup_cmd (&action_exp, cmdlist, "", -1, 1); |
| 2341 | if (cmd == 0) |
| 2342 | error ("Bad action list item: %s", action_exp); |
| 2343 | |
| 2344 | if (cmd->function.cfunc == while_stepping_pseudocommand) |
| 2345 | stepping_actions = 1; |
| 2346 | else if (cmd->function.cfunc == end_actions_pseudocommand) |
| 2347 | stepping_actions = 0; |
| 2348 | else if (cmd->function.cfunc == collect_pseudocommand) |
| 2349 | { |
| 2350 | /* Display the collected data. |
| 2351 | For the trap frame, display only what was collected at the trap. |
| 2352 | Likewise for stepping frames, display only what was collected |
| 2353 | while stepping. This means that the two boolean variables, |
| 2354 | STEPPING_FRAME and STEPPING_ACTIONS should be equal. */ |
| 2355 | if (stepping_frame == stepping_actions) |
| 2356 | { |
| 2357 | do { /* repeat over a comma-separated list */ |
| 2358 | QUIT; |
| 2359 | if (*action_exp == ',') |
| 2360 | action_exp++; |
| 2361 | while (isspace (*action_exp)) |
| 2362 | action_exp++; |
| 2363 | |
| 2364 | next_comma = strchr (action_exp, ','); |
| 2365 | |
| 2366 | if (0 == strncasecmp (action_exp, "$reg", 4)) |
| 2367 | registers_info (NULL, from_tty); |
| 2368 | else if (0 == strncasecmp (action_exp, "$loc", 4)) |
| 2369 | locals_info (NULL, from_tty); |
| 2370 | else if (0 == strncasecmp (action_exp, "$arg", 4)) |
| 2371 | args_info (NULL, from_tty); |
| 2372 | else if (action_exp[0] == '$' && action_exp[1] == '(') |
| 2373 | { /* memrange */ |
| 2374 | long typecode, size; |
| 2375 | bfd_signed_vma offset; |
| 2376 | char fmt[40]; |
| 2377 | |
| 2378 | action_exp = parse_and_eval_memrange (action_exp, |
| 2379 | read_pc (), |
| 2380 | &typecode, |
| 2381 | &offset, |
| 2382 | &size); |
| 2383 | if (typecode != 0 && typecode != -1) |
| 2384 | offset += read_register (typecode); |
| 2385 | sprintf (fmt, "/%dxb 0x%x", size, offset); |
| 2386 | x_command (fmt, from_tty); |
| 2387 | next_comma = strchr (action_exp, ','); |
| 2388 | } |
| 2389 | else |
| 2390 | { /* variable */ |
| 2391 | if (next_comma) |
| 2392 | { |
| 2393 | make_cleanup (replace_comma, next_comma); |
| 2394 | *next_comma = '\0'; |
| 2395 | } |
| 2396 | printf_filtered ("%s = ", action_exp); |
| 2397 | output_command (action_exp, from_tty); |
| 2398 | printf_filtered ("\n"); |
| 2399 | } |
| 2400 | if (next_comma) |
| 2401 | *next_comma = ','; |
| 2402 | action_exp = next_comma; |
| 2403 | } while (action_exp && *action_exp == ','); |
| 2404 | } |
| 2405 | } |
| 2406 | } |
| 2407 | discard_cleanups (old_cleanups); |
| 2408 | } |
| 2409 | |
| 2410 | /* module initialization */ |
| 2411 | void |
| 2412 | _initialize_tracepoint () |
| 2413 | { |
| 2414 | tracepoint_chain = 0; |
| 2415 | tracepoint_count = 0; |
| 2416 | traceframe_number = -1; |
| 2417 | tracepoint_number = -1; |
| 2418 | |
| 2419 | set_internalvar (lookup_internalvar ("tpnum"), |
| 2420 | value_from_longest (builtin_type_int, (LONGEST) 0)); |
| 2421 | set_internalvar (lookup_internalvar ("trace_frame"), |
| 2422 | value_from_longest (builtin_type_int, (LONGEST) 0)); |
| 2423 | |
| 2424 | if (tracepoint_list.list == NULL) |
| 2425 | { |
| 2426 | tracepoint_list.listsize = 128; |
| 2427 | tracepoint_list.list = xmalloc |
| 2428 | (tracepoint_list.listsize * sizeof (struct memrange)); |
| 2429 | } |
| 2430 | if (stepping_list.list == NULL) |
| 2431 | { |
| 2432 | stepping_list.listsize = 128; |
| 2433 | stepping_list.list = xmalloc |
| 2434 | (stepping_list.listsize * sizeof (struct memrange)); |
| 2435 | } |
| 2436 | |
| 2437 | add_info ("scope", scope_info, |
| 2438 | "List the variables local to a scope"); |
| 2439 | |
| 2440 | add_cmd ("tracepoints", class_trace, NO_FUNCTION, |
| 2441 | "Tracing of program execution without stopping the program.", |
| 2442 | &cmdlist); |
| 2443 | |
| 2444 | add_info ("tracepoints", tracepoints_info, |
| 2445 | "Status of tracepoints, or tracepoint number NUMBER.\n\ |
| 2446 | Convenience variable \"$tpnum\" contains the number of the\n\ |
| 2447 | last tracepoint set."); |
| 2448 | |
| 2449 | add_info_alias ("tp", "tracepoints", 1); |
| 2450 | |
| 2451 | add_com ("save-tracepoints", class_trace, tracepoint_save_command, |
| 2452 | "Save current tracepoint definitions as a script.\n\ |
| 2453 | Use the 'source' command in another debug session to restore them."); |
| 2454 | |
| 2455 | add_com ("tdump", class_trace, trace_dump_command, |
| 2456 | "Print everything collected at the current tracepoint."); |
| 2457 | |
| 2458 | add_prefix_cmd ("tfind", class_trace, trace_find_command, |
| 2459 | "Select a trace frame;\n\ |
| 2460 | No argument means forward by one frame; '-' meand backward by one frame.", |
| 2461 | &tfindlist, "tfind ", 1, &cmdlist); |
| 2462 | |
| 2463 | add_cmd ("outside", class_trace, trace_find_outside_command, |
| 2464 | "Select a trace frame whose PC is outside the given \ |
| 2465 | range.\nUsage: tfind outside addr1, addr2", |
| 2466 | &tfindlist); |
| 2467 | |
| 2468 | add_cmd ("range", class_trace, trace_find_range_command, |
| 2469 | "Select a trace frame whose PC is in the given range.\n\ |
| 2470 | Usage: tfind range addr1,addr2", |
| 2471 | &tfindlist); |
| 2472 | |
| 2473 | add_cmd ("line", class_trace, trace_find_line_command, |
| 2474 | "Select a trace frame by source line.\n\ |
| 2475 | Argument can be a line number (with optional source file), \n\ |
| 2476 | a function name, or '*' followed by an address.\n\ |
| 2477 | Default argument is 'the next source line that was traced'.", |
| 2478 | &tfindlist); |
| 2479 | |
| 2480 | add_cmd ("tracepoint", class_trace, trace_find_tracepoint_command, |
| 2481 | "Select a trace frame by tracepoint number.\n\ |
| 2482 | Default is the tracepoint for the current trace frame.", |
| 2483 | &tfindlist); |
| 2484 | |
| 2485 | add_cmd ("pc", class_trace, trace_find_pc_command, |
| 2486 | "Select a trace frame by PC.\n\ |
| 2487 | Default is the current PC, or the PC of the current trace frame.", |
| 2488 | &tfindlist); |
| 2489 | |
| 2490 | add_cmd ("end", class_trace, trace_find_end_command, |
| 2491 | "Synonym for 'none'.\n\ |
| 2492 | De-select any trace frame and resume 'live' debugging.", |
| 2493 | &tfindlist); |
| 2494 | |
| 2495 | add_cmd ("none", class_trace, trace_find_none_command, |
| 2496 | "De-select any trace frame and resume 'live' debugging.", |
| 2497 | &tfindlist); |
| 2498 | |
| 2499 | add_cmd ("start", class_trace, trace_find_start_command, |
| 2500 | "Select the first trace frame in the trace buffer.", |
| 2501 | &tfindlist); |
| 2502 | |
| 2503 | add_com ("tstatus", class_trace, trace_status_command, |
| 2504 | "Display the status of the current trace data collection."); |
| 2505 | |
| 2506 | add_com ("tstop", class_trace, trace_stop_command, |
| 2507 | "Stop trace data collection."); |
| 2508 | |
| 2509 | add_com ("tstart", class_trace, trace_start_command, |
| 2510 | "Start trace data collection."); |
| 2511 | |
| 2512 | add_com ("passcount", class_trace, trace_pass_command, |
| 2513 | "Set the passcount for a tracepoint.\n\ |
| 2514 | The trace will end when the tracepoint has been passed 'count' times.\n\ |
| 2515 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ |
| 2516 | if TPNUM is omitted, passcount refers to the last tracepoint defined."); |
| 2517 | |
| 2518 | add_com ("end", class_trace, end_actions_pseudocommand, |
| 2519 | "Ends a list of commands or actions.\n\ |
| 2520 | Several GDB commands allow you to enter a list of commands or actions.\n\ |
| 2521 | Entering \"end\" on a line by itself is the normal way to terminate\n\ |
| 2522 | such a list.\n\n\ |
| 2523 | Note: the \"end\" command cannot be used at the gdb prompt."); |
| 2524 | |
| 2525 | add_com ("while-stepping", class_trace, while_stepping_pseudocommand, |
| 2526 | "Specify single-stepping behavior at a tracepoint.\n\ |
| 2527 | Argument is number of instructions to trace in single-step mode\n\ |
| 2528 | following the tracepoint. This command is normally followed by\n\ |
| 2529 | one or more \"collect\" commands, to specify what to collect\n\ |
| 2530 | while single-stepping.\n\n\ |
| 2531 | Note: this command can only be used in a tracepoint \"actions\" list."); |
| 2532 | |
| 2533 | add_com_alias ("ws", "while-stepping", class_alias, 0); |
| 2534 | add_com_alias ("stepping", "while-stepping", class_alias, 0); |
| 2535 | |
| 2536 | add_com ("collect", class_trace, collect_pseudocommand, |
| 2537 | "Specify one or more data items to be collected at a tracepoint.\n\ |
| 2538 | Accepts a comma-separated list of (one or more) arguments.\n\ |
| 2539 | Things that may be collected include registers, variables, plus\n\ |
| 2540 | the following special arguments:\n\ |
| 2541 | $regs -- all registers.\n\ |
| 2542 | $args -- all function arguments.\n\ |
| 2543 | $locals -- all variables local to the block/function scope.\n\ |
| 2544 | $(addr,len) -- a literal memory range.\n\ |
| 2545 | $($reg,addr,len) -- a register-relative literal memory range.\n\n\ |
| 2546 | Note: this command can only be used in a tracepoint \"actions\" list."); |
| 2547 | |
| 2548 | add_com ("actions", class_trace, trace_actions_command, |
| 2549 | "Specify the actions to be taken at a tracepoint.\n\ |
| 2550 | Tracepoint actions may include collecting of specified data, \n\ |
| 2551 | single-stepping, or enabling/disabling other tracepoints, \n\ |
| 2552 | depending on target's capabilities."); |
| 2553 | |
| 2554 | add_cmd ("tracepoints", class_trace, delete_trace_command, |
| 2555 | "Delete specified tracepoints.\n\ |
| 2556 | Arguments are tracepoint numbers, separated by spaces.\n\ |
| 2557 | No argument means delete all tracepoints.", |
| 2558 | &deletelist); |
| 2559 | |
| 2560 | add_cmd ("tracepoints", class_trace, disable_trace_command, |
| 2561 | "Disable specified tracepoints.\n\ |
| 2562 | Arguments are tracepoint numbers, separated by spaces.\n\ |
| 2563 | No argument means disable all tracepoints.", |
| 2564 | &disablelist); |
| 2565 | |
| 2566 | add_cmd ("tracepoints", class_trace, enable_trace_command, |
| 2567 | "Enable specified tracepoints.\n\ |
| 2568 | Arguments are tracepoint numbers, separated by spaces.\n\ |
| 2569 | No argument means enable all tracepoints.", |
| 2570 | &enablelist); |
| 2571 | |
| 2572 | add_com ("trace", class_trace, trace_command, |
| 2573 | "Set a tracepoint at a specified line or function or address.\n\ |
| 2574 | Argument may be a line number, function name, or '*' plus an address.\n\ |
| 2575 | For a line number or function, trace at the start of its code.\n\ |
| 2576 | If an address is specified, trace at that exact address.\n\n\ |
| 2577 | Do \"help tracepoints\" for info on other tracepoint commands."); |
| 2578 | |
| 2579 | add_com_alias ("tp", "trace", class_alias, 0); |
| 2580 | add_com_alias ("tr", "trace", class_alias, 1); |
| 2581 | add_com_alias ("tra", "trace", class_alias, 1); |
| 2582 | add_com_alias ("trac", "trace", class_alias, 1); |
| 2583 | } |
| 2584 | |