| 1 | /* MI Command Set - stack commands. |
| 2 | Copyright (C) 2000-2016 Free Software Foundation, Inc. |
| 3 | Contributed by Cygnus Solutions (a Red Hat company). |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "target.h" |
| 22 | #include "frame.h" |
| 23 | #include "value.h" |
| 24 | #include "mi-cmds.h" |
| 25 | #include "ui-out.h" |
| 26 | #include "symtab.h" |
| 27 | #include "block.h" |
| 28 | #include "stack.h" |
| 29 | #include "dictionary.h" |
| 30 | #include "language.h" |
| 31 | #include "valprint.h" |
| 32 | #include "utils.h" |
| 33 | #include "mi-getopt.h" |
| 34 | #include "extension.h" |
| 35 | #include <ctype.h> |
| 36 | #include "mi-parse.h" |
| 37 | |
| 38 | enum what_to_list { locals, arguments, all }; |
| 39 | |
| 40 | static void list_args_or_locals (enum what_to_list what, |
| 41 | enum print_values values, |
| 42 | struct frame_info *fi, |
| 43 | int skip_unavailable); |
| 44 | |
| 45 | /* True if we want to allow Python-based frame filters. */ |
| 46 | static int frame_filters = 0; |
| 47 | |
| 48 | void |
| 49 | mi_cmd_enable_frame_filters (char *command, char **argv, int argc) |
| 50 | { |
| 51 | if (argc != 0) |
| 52 | error (_("-enable-frame-filters: no arguments allowed")); |
| 53 | frame_filters = 1; |
| 54 | } |
| 55 | |
| 56 | /* Like apply_ext_lang_frame_filter, but take a print_values */ |
| 57 | |
| 58 | static enum ext_lang_bt_status |
| 59 | mi_apply_ext_lang_frame_filter (struct frame_info *frame, int flags, |
| 60 | enum print_values print_values, |
| 61 | struct ui_out *out, |
| 62 | int frame_low, int frame_high) |
| 63 | { |
| 64 | /* ext_lang_frame_args's MI options are compatible with MI print |
| 65 | values. */ |
| 66 | return apply_ext_lang_frame_filter (frame, flags, |
| 67 | (enum ext_lang_frame_args) print_values, |
| 68 | out, |
| 69 | frame_low, frame_high); |
| 70 | } |
| 71 | |
| 72 | /* Print a list of the stack frames. Args can be none, in which case |
| 73 | we want to print the whole backtrace, or a pair of numbers |
| 74 | specifying the frame numbers at which to start and stop the |
| 75 | display. If the two numbers are equal, a single frame will be |
| 76 | displayed. */ |
| 77 | |
| 78 | void |
| 79 | mi_cmd_stack_list_frames (char *command, char **argv, int argc) |
| 80 | { |
| 81 | int frame_low; |
| 82 | int frame_high; |
| 83 | int i; |
| 84 | struct cleanup *cleanup_stack; |
| 85 | struct frame_info *fi; |
| 86 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| 87 | int raw_arg = 0; |
| 88 | int oind = 0; |
| 89 | enum opt |
| 90 | { |
| 91 | NO_FRAME_FILTERS |
| 92 | }; |
| 93 | static const struct mi_opt opts[] = |
| 94 | { |
| 95 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| 96 | { 0, 0, 0 } |
| 97 | }; |
| 98 | |
| 99 | /* Parse arguments. In this instance we are just looking for |
| 100 | --no-frame-filters. */ |
| 101 | while (1) |
| 102 | { |
| 103 | char *oarg; |
| 104 | int opt = mi_getopt ("-stack-list-frames", argc, argv, |
| 105 | opts, &oind, &oarg); |
| 106 | if (opt < 0) |
| 107 | break; |
| 108 | switch ((enum opt) opt) |
| 109 | { |
| 110 | case NO_FRAME_FILTERS: |
| 111 | raw_arg = oind; |
| 112 | break; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /* After the last option is parsed, there should either be low - |
| 117 | high range, or no further arguments. */ |
| 118 | if ((argc - oind != 0) && (argc - oind != 2)) |
| 119 | error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]")); |
| 120 | |
| 121 | /* If there is a range, set it. */ |
| 122 | if (argc - oind == 2) |
| 123 | { |
| 124 | frame_low = atoi (argv[0 + oind]); |
| 125 | frame_high = atoi (argv[1 + oind]); |
| 126 | } |
| 127 | else |
| 128 | { |
| 129 | /* Called with no arguments, it means we want the whole |
| 130 | backtrace. */ |
| 131 | frame_low = -1; |
| 132 | frame_high = -1; |
| 133 | } |
| 134 | |
| 135 | /* Let's position fi on the frame at which to start the |
| 136 | display. Could be the innermost frame if the whole stack needs |
| 137 | displaying, or if frame_low is 0. */ |
| 138 | for (i = 0, fi = get_current_frame (); |
| 139 | fi && i < frame_low; |
| 140 | i++, fi = get_prev_frame (fi)); |
| 141 | |
| 142 | if (fi == NULL) |
| 143 | error (_("-stack-list-frames: Not enough frames in stack.")); |
| 144 | |
| 145 | cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack"); |
| 146 | |
| 147 | if (! raw_arg && frame_filters) |
| 148 | { |
| 149 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO; |
| 150 | int py_frame_low = frame_low; |
| 151 | |
| 152 | /* We cannot pass -1 to frame_low, as that would signify a |
| 153 | relative backtrace from the tail of the stack. So, in the case |
| 154 | of frame_low == -1, assign and increment it. */ |
| 155 | if (py_frame_low == -1) |
| 156 | py_frame_low++; |
| 157 | |
| 158 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
| 159 | NO_VALUES, current_uiout, |
| 160 | py_frame_low, frame_high); |
| 161 | } |
| 162 | |
| 163 | /* Run the inbuilt backtrace if there are no filters registered, or |
| 164 | if "--no-frame-filters" has been specified from the command. */ |
| 165 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| 166 | { |
| 167 | /* Now let's print the frames up to frame_high, or until there are |
| 168 | frames in the stack. */ |
| 169 | for (; |
| 170 | fi && (i <= frame_high || frame_high == -1); |
| 171 | i++, fi = get_prev_frame (fi)) |
| 172 | { |
| 173 | QUIT; |
| 174 | /* Print the location and the address always, even for level 0. |
| 175 | If args is 0, don't print the arguments. */ |
| 176 | print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | do_cleanups (cleanup_stack); |
| 181 | } |
| 182 | |
| 183 | void |
| 184 | mi_cmd_stack_info_depth (char *command, char **argv, int argc) |
| 185 | { |
| 186 | int frame_high; |
| 187 | int i; |
| 188 | struct frame_info *fi; |
| 189 | |
| 190 | if (argc > 1) |
| 191 | error (_("-stack-info-depth: Usage: [MAX_DEPTH]")); |
| 192 | |
| 193 | if (argc == 1) |
| 194 | frame_high = atoi (argv[0]); |
| 195 | else |
| 196 | /* Called with no arguments, it means we want the real depth of |
| 197 | the stack. */ |
| 198 | frame_high = -1; |
| 199 | |
| 200 | for (i = 0, fi = get_current_frame (); |
| 201 | fi && (i < frame_high || frame_high == -1); |
| 202 | i++, fi = get_prev_frame (fi)) |
| 203 | QUIT; |
| 204 | |
| 205 | ui_out_field_int (current_uiout, "depth", i); |
| 206 | } |
| 207 | |
| 208 | /* Print a list of the locals for the current frame. With argument of |
| 209 | 0, print only the names, with argument of 1 print also the |
| 210 | values. */ |
| 211 | |
| 212 | void |
| 213 | mi_cmd_stack_list_locals (char *command, char **argv, int argc) |
| 214 | { |
| 215 | struct frame_info *frame; |
| 216 | int raw_arg = 0; |
| 217 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| 218 | enum print_values print_value; |
| 219 | int oind = 0; |
| 220 | int skip_unavailable = 0; |
| 221 | int i; |
| 222 | |
| 223 | if (argc > 1) |
| 224 | { |
| 225 | int i; |
| 226 | enum opt |
| 227 | { |
| 228 | NO_FRAME_FILTERS, |
| 229 | SKIP_UNAVAILABLE, |
| 230 | }; |
| 231 | static const struct mi_opt opts[] = |
| 232 | { |
| 233 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| 234 | {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
| 235 | { 0, 0, 0 } |
| 236 | }; |
| 237 | |
| 238 | while (1) |
| 239 | { |
| 240 | char *oarg; |
| 241 | /* Don't parse 'print-values' as an option. */ |
| 242 | int opt = mi_getopt ("-stack-list-locals", argc - 1, argv, |
| 243 | opts, &oind, &oarg); |
| 244 | |
| 245 | if (opt < 0) |
| 246 | break; |
| 247 | switch ((enum opt) opt) |
| 248 | { |
| 249 | case NO_FRAME_FILTERS: |
| 250 | raw_arg = oind; |
| 251 | case SKIP_UNAVAILABLE: |
| 252 | skip_unavailable = 1; |
| 253 | break; |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | /* After the last option is parsed, there should be only |
| 259 | 'print-values'. */ |
| 260 | if (argc - oind != 1) |
| 261 | error (_("-stack-list-locals: Usage: [--no-frame-filters] " |
| 262 | "[--skip-unavailable] PRINT_VALUES")); |
| 263 | |
| 264 | frame = get_selected_frame (NULL); |
| 265 | print_value = mi_parse_print_values (argv[oind]); |
| 266 | |
| 267 | if (! raw_arg && frame_filters) |
| 268 | { |
| 269 | int flags = PRINT_LEVEL | PRINT_LOCALS; |
| 270 | |
| 271 | result = mi_apply_ext_lang_frame_filter (frame, flags, print_value, |
| 272 | current_uiout, 0, 0); |
| 273 | } |
| 274 | |
| 275 | /* Run the inbuilt backtrace if there are no filters registered, or |
| 276 | if "--no-frame-filters" has been specified from the command. */ |
| 277 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| 278 | { |
| 279 | list_args_or_locals (locals, print_value, frame, |
| 280 | skip_unavailable); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | /* Print a list of the arguments for the current frame. With argument |
| 285 | of 0, print only the names, with argument of 1 print also the |
| 286 | values. */ |
| 287 | |
| 288 | void |
| 289 | mi_cmd_stack_list_args (char *command, char **argv, int argc) |
| 290 | { |
| 291 | int frame_low; |
| 292 | int frame_high; |
| 293 | int i; |
| 294 | struct frame_info *fi; |
| 295 | struct cleanup *cleanup_stack_args; |
| 296 | enum print_values print_values; |
| 297 | struct ui_out *uiout = current_uiout; |
| 298 | int raw_arg = 0; |
| 299 | int oind = 0; |
| 300 | int skip_unavailable = 0; |
| 301 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| 302 | enum opt |
| 303 | { |
| 304 | NO_FRAME_FILTERS, |
| 305 | SKIP_UNAVAILABLE, |
| 306 | }; |
| 307 | static const struct mi_opt opts[] = |
| 308 | { |
| 309 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| 310 | {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
| 311 | { 0, 0, 0 } |
| 312 | }; |
| 313 | |
| 314 | while (1) |
| 315 | { |
| 316 | char *oarg; |
| 317 | int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv, |
| 318 | opts, &oind, &oarg); |
| 319 | |
| 320 | if (opt < 0) |
| 321 | break; |
| 322 | switch ((enum opt) opt) |
| 323 | { |
| 324 | case NO_FRAME_FILTERS: |
| 325 | raw_arg = oind; |
| 326 | break; |
| 327 | case SKIP_UNAVAILABLE: |
| 328 | skip_unavailable = 1; |
| 329 | break; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | if (argc - oind != 1 && argc - oind != 3) |
| 334 | error (_("-stack-list-arguments: Usage: " \ |
| 335 | "[--no-frame-filters] [--skip-unavailable] " |
| 336 | "PRINT_VALUES [FRAME_LOW FRAME_HIGH]")); |
| 337 | |
| 338 | if (argc - oind == 3) |
| 339 | { |
| 340 | frame_low = atoi (argv[1 + oind]); |
| 341 | frame_high = atoi (argv[2 + oind]); |
| 342 | } |
| 343 | else |
| 344 | { |
| 345 | /* Called with no arguments, it means we want args for the whole |
| 346 | backtrace. */ |
| 347 | frame_low = -1; |
| 348 | frame_high = -1; |
| 349 | } |
| 350 | |
| 351 | print_values = mi_parse_print_values (argv[oind]); |
| 352 | |
| 353 | /* Let's position fi on the frame at which to start the |
| 354 | display. Could be the innermost frame if the whole stack needs |
| 355 | displaying, or if frame_low is 0. */ |
| 356 | for (i = 0, fi = get_current_frame (); |
| 357 | fi && i < frame_low; |
| 358 | i++, fi = get_prev_frame (fi)); |
| 359 | |
| 360 | if (fi == NULL) |
| 361 | error (_("-stack-list-arguments: Not enough frames in stack.")); |
| 362 | |
| 363 | cleanup_stack_args |
| 364 | = make_cleanup_ui_out_list_begin_end (uiout, "stack-args"); |
| 365 | |
| 366 | if (! raw_arg && frame_filters) |
| 367 | { |
| 368 | int flags = PRINT_LEVEL | PRINT_ARGS; |
| 369 | int py_frame_low = frame_low; |
| 370 | |
| 371 | /* We cannot pass -1 to frame_low, as that would signify a |
| 372 | relative backtrace from the tail of the stack. So, in the case |
| 373 | of frame_low == -1, assign and increment it. */ |
| 374 | if (py_frame_low == -1) |
| 375 | py_frame_low++; |
| 376 | |
| 377 | result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags, |
| 378 | print_values, current_uiout, |
| 379 | py_frame_low, frame_high); |
| 380 | } |
| 381 | |
| 382 | /* Run the inbuilt backtrace if there are no filters registered, or |
| 383 | if "--no-frame-filters" has been specified from the command. */ |
| 384 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| 385 | { |
| 386 | /* Now let's print the frames up to frame_high, or until there are |
| 387 | frames in the stack. */ |
| 388 | for (; |
| 389 | fi && (i <= frame_high || frame_high == -1); |
| 390 | i++, fi = get_prev_frame (fi)) |
| 391 | { |
| 392 | struct cleanup *cleanup_frame; |
| 393 | |
| 394 | QUIT; |
| 395 | cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
| 396 | ui_out_field_int (uiout, "level", i); |
| 397 | list_args_or_locals (arguments, print_values, fi, skip_unavailable); |
| 398 | do_cleanups (cleanup_frame); |
| 399 | } |
| 400 | } |
| 401 | do_cleanups (cleanup_stack_args); |
| 402 | } |
| 403 | |
| 404 | /* Print a list of the local variables (including arguments) for the |
| 405 | current frame. ARGC must be 1 and ARGV[0] specify if only the names, |
| 406 | or both names and values of the variables must be printed. See |
| 407 | parse_print_value for possible values. */ |
| 408 | |
| 409 | void |
| 410 | mi_cmd_stack_list_variables (char *command, char **argv, int argc) |
| 411 | { |
| 412 | struct frame_info *frame; |
| 413 | int raw_arg = 0; |
| 414 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| 415 | enum print_values print_value; |
| 416 | int oind = 0; |
| 417 | int skip_unavailable = 0; |
| 418 | |
| 419 | if (argc > 1) |
| 420 | { |
| 421 | int i; |
| 422 | enum opt |
| 423 | { |
| 424 | NO_FRAME_FILTERS, |
| 425 | SKIP_UNAVAILABLE, |
| 426 | }; |
| 427 | static const struct mi_opt opts[] = |
| 428 | { |
| 429 | {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| 430 | {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
| 431 | { 0, 0, 0 } |
| 432 | }; |
| 433 | |
| 434 | while (1) |
| 435 | { |
| 436 | char *oarg; |
| 437 | /* Don't parse 'print-values' as an option. */ |
| 438 | int opt = mi_getopt ("-stack-list-variables", argc - 1, |
| 439 | argv, opts, &oind, &oarg); |
| 440 | if (opt < 0) |
| 441 | break; |
| 442 | switch ((enum opt) opt) |
| 443 | { |
| 444 | case NO_FRAME_FILTERS: |
| 445 | raw_arg = oind; |
| 446 | break; |
| 447 | case SKIP_UNAVAILABLE: |
| 448 | skip_unavailable = 1; |
| 449 | break; |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* After the last option is parsed, there should be only |
| 455 | 'print-values'. */ |
| 456 | if (argc - oind != 1) |
| 457 | error (_("-stack-list-variables: Usage: [--no-frame-filters] " \ |
| 458 | "[--skip-unavailable] PRINT_VALUES")); |
| 459 | |
| 460 | frame = get_selected_frame (NULL); |
| 461 | print_value = mi_parse_print_values (argv[oind]); |
| 462 | |
| 463 | if (! raw_arg && frame_filters) |
| 464 | { |
| 465 | int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS; |
| 466 | |
| 467 | result = mi_apply_ext_lang_frame_filter (frame, flags, |
| 468 | print_value, |
| 469 | current_uiout, 0, 0); |
| 470 | } |
| 471 | |
| 472 | /* Run the inbuilt backtrace if there are no filters registered, or |
| 473 | if "--no-frame-filters" has been specified from the command. */ |
| 474 | if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| 475 | { |
| 476 | list_args_or_locals (all, print_value, frame, |
| 477 | skip_unavailable); |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | /* Print single local or argument. ARG must be already read in. For |
| 482 | WHAT and VALUES see list_args_or_locals. |
| 483 | |
| 484 | Errors are printed as if they would be the parameter value. Use |
| 485 | zeroed ARG iff it should not be printed according to VALUES. If |
| 486 | SKIP_UNAVAILABLE is true, only print ARG if it is available. */ |
| 487 | |
| 488 | static void |
| 489 | list_arg_or_local (const struct frame_arg *arg, enum what_to_list what, |
| 490 | enum print_values values, int skip_unavailable) |
| 491 | { |
| 492 | struct cleanup *old_chain; |
| 493 | struct ui_out *uiout = current_uiout; |
| 494 | struct ui_file *stb; |
| 495 | |
| 496 | gdb_assert (!arg->val || !arg->error); |
| 497 | gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL |
| 498 | && arg->error == NULL) |
| 499 | || values == PRINT_SIMPLE_VALUES |
| 500 | || (values == PRINT_ALL_VALUES |
| 501 | && (arg->val != NULL || arg->error != NULL))); |
| 502 | gdb_assert (arg->entry_kind == print_entry_values_no |
| 503 | || (arg->entry_kind == print_entry_values_only |
| 504 | && (arg->val || arg->error))); |
| 505 | |
| 506 | if (skip_unavailable && arg->val != NULL |
| 507 | && (value_entirely_unavailable (arg->val) |
| 508 | /* A scalar object that does not have all bits available is |
| 509 | also considered unavailable, because all bits contribute |
| 510 | to its representation. */ |
| 511 | || (val_print_scalar_type_p (value_type (arg->val)) |
| 512 | && !value_bytes_available (arg->val, |
| 513 | value_embedded_offset (arg->val), |
| 514 | TYPE_LENGTH (value_type (arg->val)))))) |
| 515 | return; |
| 516 | |
| 517 | stb = mem_fileopen (); |
| 518 | old_chain = make_cleanup_ui_file_delete (stb); |
| 519 | |
| 520 | if (values != PRINT_NO_VALUES || what == all) |
| 521 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
| 522 | |
| 523 | fputs_filtered (SYMBOL_PRINT_NAME (arg->sym), stb); |
| 524 | if (arg->entry_kind == print_entry_values_only) |
| 525 | fputs_filtered ("@entry", stb); |
| 526 | ui_out_field_stream (uiout, "name", stb); |
| 527 | |
| 528 | if (what == all && SYMBOL_IS_ARGUMENT (arg->sym)) |
| 529 | ui_out_field_int (uiout, "arg", 1); |
| 530 | |
| 531 | if (values == PRINT_SIMPLE_VALUES) |
| 532 | { |
| 533 | check_typedef (arg->sym->type); |
| 534 | type_print (arg->sym->type, "", stb, -1); |
| 535 | ui_out_field_stream (uiout, "type", stb); |
| 536 | } |
| 537 | |
| 538 | if (arg->val || arg->error) |
| 539 | { |
| 540 | const char *error_message = NULL; |
| 541 | |
| 542 | if (arg->error) |
| 543 | error_message = arg->error; |
| 544 | else |
| 545 | { |
| 546 | TRY |
| 547 | { |
| 548 | struct value_print_options opts; |
| 549 | |
| 550 | get_no_prettyformat_print_options (&opts); |
| 551 | opts.deref_ref = 1; |
| 552 | common_val_print (arg->val, stb, 0, &opts, |
| 553 | language_def (SYMBOL_LANGUAGE (arg->sym))); |
| 554 | } |
| 555 | CATCH (except, RETURN_MASK_ERROR) |
| 556 | { |
| 557 | error_message = except.message; |
| 558 | } |
| 559 | END_CATCH |
| 560 | } |
| 561 | if (error_message != NULL) |
| 562 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
| 563 | error_message); |
| 564 | ui_out_field_stream (uiout, "value", stb); |
| 565 | } |
| 566 | |
| 567 | do_cleanups (old_chain); |
| 568 | } |
| 569 | |
| 570 | /* Print a list of the objects for the frame FI in a certain form, |
| 571 | which is determined by VALUES. The objects can be locals, |
| 572 | arguments or both, which is determined by WHAT. If SKIP_UNAVAILABLE |
| 573 | is true, only print the arguments or local variables whose values |
| 574 | are available. */ |
| 575 | |
| 576 | static void |
| 577 | list_args_or_locals (enum what_to_list what, enum print_values values, |
| 578 | struct frame_info *fi, int skip_unavailable) |
| 579 | { |
| 580 | const struct block *block; |
| 581 | struct symbol *sym; |
| 582 | struct block_iterator iter; |
| 583 | struct cleanup *cleanup_list; |
| 584 | struct type *type; |
| 585 | char *name_of_result; |
| 586 | struct ui_out *uiout = current_uiout; |
| 587 | |
| 588 | block = get_frame_block (fi, 0); |
| 589 | |
| 590 | switch (what) |
| 591 | { |
| 592 | case locals: |
| 593 | name_of_result = "locals"; |
| 594 | break; |
| 595 | case arguments: |
| 596 | name_of_result = "args"; |
| 597 | break; |
| 598 | case all: |
| 599 | name_of_result = "variables"; |
| 600 | break; |
| 601 | default: |
| 602 | internal_error (__FILE__, __LINE__, |
| 603 | "unexpected what_to_list: %d", (int) what); |
| 604 | } |
| 605 | |
| 606 | cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result); |
| 607 | |
| 608 | while (block != 0) |
| 609 | { |
| 610 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
| 611 | { |
| 612 | int print_me = 0; |
| 613 | |
| 614 | switch (SYMBOL_CLASS (sym)) |
| 615 | { |
| 616 | default: |
| 617 | case LOC_UNDEF: /* catches errors */ |
| 618 | case LOC_CONST: /* constant */ |
| 619 | case LOC_TYPEDEF: /* local typedef */ |
| 620 | case LOC_LABEL: /* local label */ |
| 621 | case LOC_BLOCK: /* local function */ |
| 622 | case LOC_CONST_BYTES: /* loc. byte seq. */ |
| 623 | case LOC_UNRESOLVED: /* unresolved static */ |
| 624 | case LOC_OPTIMIZED_OUT: /* optimized out */ |
| 625 | print_me = 0; |
| 626 | break; |
| 627 | |
| 628 | case LOC_ARG: /* argument */ |
| 629 | case LOC_REF_ARG: /* reference arg */ |
| 630 | case LOC_REGPARM_ADDR: /* indirect register arg */ |
| 631 | case LOC_LOCAL: /* stack local */ |
| 632 | case LOC_STATIC: /* static */ |
| 633 | case LOC_REGISTER: /* register */ |
| 634 | case LOC_COMPUTED: /* computed location */ |
| 635 | if (what == all) |
| 636 | print_me = 1; |
| 637 | else if (what == locals) |
| 638 | print_me = !SYMBOL_IS_ARGUMENT (sym); |
| 639 | else |
| 640 | print_me = SYMBOL_IS_ARGUMENT (sym); |
| 641 | break; |
| 642 | } |
| 643 | if (print_me) |
| 644 | { |
| 645 | struct symbol *sym2; |
| 646 | struct frame_arg arg, entryarg; |
| 647 | |
| 648 | if (SYMBOL_IS_ARGUMENT (sym)) |
| 649 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
| 650 | block, VAR_DOMAIN, |
| 651 | NULL).symbol; |
| 652 | else |
| 653 | sym2 = sym; |
| 654 | gdb_assert (sym2 != NULL); |
| 655 | |
| 656 | memset (&arg, 0, sizeof (arg)); |
| 657 | arg.sym = sym2; |
| 658 | arg.entry_kind = print_entry_values_no; |
| 659 | memset (&entryarg, 0, sizeof (entryarg)); |
| 660 | entryarg.sym = sym2; |
| 661 | entryarg.entry_kind = print_entry_values_no; |
| 662 | |
| 663 | switch (values) |
| 664 | { |
| 665 | case PRINT_SIMPLE_VALUES: |
| 666 | type = check_typedef (sym2->type); |
| 667 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
| 668 | && TYPE_CODE (type) != TYPE_CODE_STRUCT |
| 669 | && TYPE_CODE (type) != TYPE_CODE_UNION) |
| 670 | { |
| 671 | case PRINT_ALL_VALUES: |
| 672 | if (SYMBOL_IS_ARGUMENT (sym)) |
| 673 | read_frame_arg (sym2, fi, &arg, &entryarg); |
| 674 | else |
| 675 | read_frame_local (sym2, fi, &arg); |
| 676 | } |
| 677 | break; |
| 678 | } |
| 679 | |
| 680 | if (arg.entry_kind != print_entry_values_only) |
| 681 | list_arg_or_local (&arg, what, values, skip_unavailable); |
| 682 | if (entryarg.entry_kind != print_entry_values_no) |
| 683 | list_arg_or_local (&entryarg, what, values, skip_unavailable); |
| 684 | xfree (arg.error); |
| 685 | xfree (entryarg.error); |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | if (BLOCK_FUNCTION (block)) |
| 690 | break; |
| 691 | else |
| 692 | block = BLOCK_SUPERBLOCK (block); |
| 693 | } |
| 694 | do_cleanups (cleanup_list); |
| 695 | } |
| 696 | |
| 697 | void |
| 698 | mi_cmd_stack_select_frame (char *command, char **argv, int argc) |
| 699 | { |
| 700 | if (argc == 0 || argc > 1) |
| 701 | error (_("-stack-select-frame: Usage: FRAME_SPEC")); |
| 702 | |
| 703 | select_frame_command (argv[0], 1 /* not used */ ); |
| 704 | } |
| 705 | |
| 706 | void |
| 707 | mi_cmd_stack_info_frame (char *command, char **argv, int argc) |
| 708 | { |
| 709 | if (argc > 0) |
| 710 | error (_("-stack-info-frame: No arguments allowed")); |
| 711 | |
| 712 | print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1); |
| 713 | } |