| 1 | /* Memory attributes support, for GDB. |
| 2 | |
| 3 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "command.h" |
| 22 | #include "gdbcmd.h" |
| 23 | #include "memattr.h" |
| 24 | #include "target.h" |
| 25 | #include "target-dcache.h" |
| 26 | #include "value.h" |
| 27 | #include "language.h" |
| 28 | #include "breakpoint.h" |
| 29 | #include "cli/cli-utils.h" |
| 30 | #include <algorithm> |
| 31 | #include "gdbarch.h" |
| 32 | |
| 33 | static std::vector<mem_region> user_mem_region_list, target_mem_region_list; |
| 34 | static std::vector<mem_region> *mem_region_list = &target_mem_region_list; |
| 35 | static int mem_number = 0; |
| 36 | |
| 37 | /* If this flag is set, the memory region list should be automatically |
| 38 | updated from the target. If it is clear, the list is user-controlled |
| 39 | and should be left alone. */ |
| 40 | |
| 41 | static bool |
| 42 | mem_use_target () |
| 43 | { |
| 44 | return mem_region_list == &target_mem_region_list; |
| 45 | } |
| 46 | |
| 47 | /* If this flag is set, we have tried to fetch the target memory regions |
| 48 | since the last time it was invalidated. If that list is still |
| 49 | empty, then the target can't supply memory regions. */ |
| 50 | static bool target_mem_regions_valid; |
| 51 | |
| 52 | /* If this flag is set, gdb will assume that memory ranges not |
| 53 | specified by the memory map have type MEM_NONE, and will |
| 54 | emit errors on all accesses to that memory. */ |
| 55 | static bool inaccessible_by_default = true; |
| 56 | |
| 57 | static void |
| 58 | show_inaccessible_by_default (struct ui_file *file, int from_tty, |
| 59 | struct cmd_list_element *c, |
| 60 | const char *value) |
| 61 | { |
| 62 | if (inaccessible_by_default) |
| 63 | fprintf_filtered (file, _("Unknown memory addresses will " |
| 64 | "be treated as inaccessible.\n")); |
| 65 | else |
| 66 | fprintf_filtered (file, _("Unknown memory addresses " |
| 67 | "will be treated as RAM.\n")); |
| 68 | } |
| 69 | |
| 70 | /* This function should be called before any command which would |
| 71 | modify the memory region list. It will handle switching from |
| 72 | a target-provided list to a local list, if necessary. */ |
| 73 | |
| 74 | static void |
| 75 | require_user_regions (int from_tty) |
| 76 | { |
| 77 | /* If we're already using a user-provided list, nothing to do. */ |
| 78 | if (!mem_use_target ()) |
| 79 | return; |
| 80 | |
| 81 | /* Switch to a user-provided list (possibly a copy of the current |
| 82 | one). */ |
| 83 | mem_region_list = &user_mem_region_list; |
| 84 | |
| 85 | /* If we don't have a target-provided region list yet, then |
| 86 | no need to warn. */ |
| 87 | if (target_mem_region_list.empty ()) |
| 88 | return; |
| 89 | |
| 90 | /* Otherwise, let the user know how to get back. */ |
| 91 | if (from_tty) |
| 92 | warning (_("Switching to manual control of memory regions; use " |
| 93 | "\"mem auto\" to fetch regions from the target again.")); |
| 94 | |
| 95 | /* And create a new list (copy of the target-supplied regions) for the user |
| 96 | to modify. */ |
| 97 | user_mem_region_list = target_mem_region_list; |
| 98 | } |
| 99 | |
| 100 | /* This function should be called before any command which would |
| 101 | read the memory region list, other than those which call |
| 102 | require_user_regions. It will handle fetching the |
| 103 | target-provided list, if necessary. */ |
| 104 | |
| 105 | static void |
| 106 | require_target_regions (void) |
| 107 | { |
| 108 | if (mem_use_target () && !target_mem_regions_valid) |
| 109 | { |
| 110 | target_mem_regions_valid = true; |
| 111 | target_mem_region_list = target_memory_map (); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | /* Create a new user-defined memory region. */ |
| 116 | |
| 117 | static void |
| 118 | create_user_mem_region (CORE_ADDR lo, CORE_ADDR hi, |
| 119 | const mem_attrib &attrib) |
| 120 | { |
| 121 | /* lo == hi is a useless empty region. */ |
| 122 | if (lo >= hi && hi != 0) |
| 123 | { |
| 124 | printf_unfiltered (_("invalid memory region: low >= high\n")); |
| 125 | return; |
| 126 | } |
| 127 | |
| 128 | mem_region newobj (lo, hi, attrib); |
| 129 | |
| 130 | auto it = std::lower_bound (user_mem_region_list.begin (), |
| 131 | user_mem_region_list.end (), |
| 132 | newobj); |
| 133 | int ix = std::distance (user_mem_region_list.begin (), it); |
| 134 | |
| 135 | /* Check for an overlapping memory region. We only need to check |
| 136 | in the vincinity - at most one before and one after the |
| 137 | insertion point. */ |
| 138 | for (int i = ix - 1; i < ix + 1; i++) |
| 139 | { |
| 140 | if (i < 0) |
| 141 | continue; |
| 142 | if (i >= user_mem_region_list.size ()) |
| 143 | continue; |
| 144 | |
| 145 | mem_region &n = user_mem_region_list[i]; |
| 146 | |
| 147 | if ((lo >= n.lo && (lo < n.hi || n.hi == 0)) |
| 148 | || (hi > n.lo && (hi <= n.hi || n.hi == 0)) |
| 149 | || (lo <= n.lo && ((hi >= n.hi && n.hi != 0) || hi == 0))) |
| 150 | { |
| 151 | printf_unfiltered (_("overlapping memory region\n")); |
| 152 | return; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | newobj.number = ++mem_number; |
| 157 | user_mem_region_list.insert (it, newobj); |
| 158 | } |
| 159 | |
| 160 | /* Look up the memory region corresponding to ADDR. */ |
| 161 | |
| 162 | struct mem_region * |
| 163 | lookup_mem_region (CORE_ADDR addr) |
| 164 | { |
| 165 | static struct mem_region region (0, 0); |
| 166 | CORE_ADDR lo; |
| 167 | CORE_ADDR hi; |
| 168 | |
| 169 | require_target_regions (); |
| 170 | |
| 171 | /* First we initialize LO and HI so that they describe the entire |
| 172 | memory space. As we process the memory region chain, they are |
| 173 | redefined to describe the minimal region containing ADDR. LO |
| 174 | and HI are used in the case where no memory region is defined |
| 175 | that contains ADDR. If a memory region is disabled, it is |
| 176 | treated as if it does not exist. The initial values for LO |
| 177 | and HI represent the bottom and top of memory. */ |
| 178 | |
| 179 | lo = 0; |
| 180 | hi = 0; |
| 181 | |
| 182 | /* Either find memory range containing ADDR, or set LO and HI |
| 183 | to the nearest boundaries of an existing memory range. |
| 184 | |
| 185 | If we ever want to support a huge list of memory regions, this |
| 186 | check should be replaced with a binary search (probably using |
| 187 | VEC_lower_bound). */ |
| 188 | for (mem_region &m : *mem_region_list) |
| 189 | { |
| 190 | if (m.enabled_p == 1) |
| 191 | { |
| 192 | /* If the address is in the memory region, return that |
| 193 | memory range. */ |
| 194 | if (addr >= m.lo && (addr < m.hi || m.hi == 0)) |
| 195 | return &m; |
| 196 | |
| 197 | /* This (correctly) won't match if m->hi == 0, representing |
| 198 | the top of the address space, because CORE_ADDR is unsigned; |
| 199 | no value of LO is less than zero. */ |
| 200 | if (addr >= m.hi && lo < m.hi) |
| 201 | lo = m.hi; |
| 202 | |
| 203 | /* This will never set HI to zero; if we're here and ADDR |
| 204 | is at or below M, and the region starts at zero, then ADDR |
| 205 | would have been in the region. */ |
| 206 | if (addr <= m.lo && (hi == 0 || hi > m.lo)) |
| 207 | hi = m.lo; |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | /* Because no region was found, we must cons up one based on what |
| 212 | was learned above. */ |
| 213 | region.lo = lo; |
| 214 | region.hi = hi; |
| 215 | |
| 216 | /* When no memory map is defined at all, we always return |
| 217 | 'default_mem_attrib', so that we do not make all memory |
| 218 | inaccessible for targets that don't provide a memory map. */ |
| 219 | if (inaccessible_by_default && !mem_region_list->empty ()) |
| 220 | region.attrib = mem_attrib::unknown (); |
| 221 | else |
| 222 | region.attrib = mem_attrib (); |
| 223 | |
| 224 | return ®ion; |
| 225 | } |
| 226 | |
| 227 | /* Invalidate any memory regions fetched from the target. */ |
| 228 | |
| 229 | void |
| 230 | invalidate_target_mem_regions (void) |
| 231 | { |
| 232 | if (!target_mem_regions_valid) |
| 233 | return; |
| 234 | |
| 235 | target_mem_regions_valid = false; |
| 236 | target_mem_region_list.clear (); |
| 237 | } |
| 238 | |
| 239 | /* Clear user-defined memory region list. */ |
| 240 | |
| 241 | static void |
| 242 | user_mem_clear (void) |
| 243 | { |
| 244 | user_mem_region_list.clear (); |
| 245 | } |
| 246 | \f |
| 247 | |
| 248 | static void |
| 249 | mem_command (const char *args, int from_tty) |
| 250 | { |
| 251 | CORE_ADDR lo, hi; |
| 252 | |
| 253 | if (!args) |
| 254 | error_no_arg (_("No mem")); |
| 255 | |
| 256 | /* For "mem auto", switch back to using a target provided list. */ |
| 257 | if (strcmp (args, "auto") == 0) |
| 258 | { |
| 259 | if (mem_use_target ()) |
| 260 | return; |
| 261 | |
| 262 | user_mem_clear (); |
| 263 | mem_region_list = &target_mem_region_list; |
| 264 | |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | require_user_regions (from_tty); |
| 269 | |
| 270 | std::string tok = extract_arg (&args); |
| 271 | if (tok == "") |
| 272 | error (_("no lo address")); |
| 273 | lo = parse_and_eval_address (tok.c_str ()); |
| 274 | |
| 275 | tok = extract_arg (&args); |
| 276 | if (tok == "") |
| 277 | error (_("no hi address")); |
| 278 | hi = parse_and_eval_address (tok.c_str ()); |
| 279 | |
| 280 | mem_attrib attrib; |
| 281 | while ((tok = extract_arg (&args)) != "") |
| 282 | { |
| 283 | if (tok == "rw") |
| 284 | attrib.mode = MEM_RW; |
| 285 | else if (tok == "ro") |
| 286 | attrib.mode = MEM_RO; |
| 287 | else if (tok == "wo") |
| 288 | attrib.mode = MEM_WO; |
| 289 | |
| 290 | else if (tok == "8") |
| 291 | attrib.width = MEM_WIDTH_8; |
| 292 | else if (tok == "16") |
| 293 | { |
| 294 | if ((lo % 2 != 0) || (hi % 2 != 0)) |
| 295 | error (_("region bounds not 16 bit aligned")); |
| 296 | attrib.width = MEM_WIDTH_16; |
| 297 | } |
| 298 | else if (tok == "32") |
| 299 | { |
| 300 | if ((lo % 4 != 0) || (hi % 4 != 0)) |
| 301 | error (_("region bounds not 32 bit aligned")); |
| 302 | attrib.width = MEM_WIDTH_32; |
| 303 | } |
| 304 | else if (tok == "64") |
| 305 | { |
| 306 | if ((lo % 8 != 0) || (hi % 8 != 0)) |
| 307 | error (_("region bounds not 64 bit aligned")); |
| 308 | attrib.width = MEM_WIDTH_64; |
| 309 | } |
| 310 | |
| 311 | #if 0 |
| 312 | else if (tok == "hwbreak") |
| 313 | attrib.hwbreak = 1; |
| 314 | else if (tok == "swbreak") |
| 315 | attrib.hwbreak = 0; |
| 316 | #endif |
| 317 | |
| 318 | else if (tok == "cache") |
| 319 | attrib.cache = 1; |
| 320 | else if (tok == "nocache") |
| 321 | attrib.cache = 0; |
| 322 | |
| 323 | #if 0 |
| 324 | else if (tok == "verify") |
| 325 | attrib.verify = 1; |
| 326 | else if (tok == "noverify") |
| 327 | attrib.verify = 0; |
| 328 | #endif |
| 329 | |
| 330 | else |
| 331 | error (_("unknown attribute: %s"), tok.c_str ()); |
| 332 | } |
| 333 | |
| 334 | create_user_mem_region (lo, hi, attrib); |
| 335 | } |
| 336 | \f |
| 337 | |
| 338 | static void |
| 339 | info_mem_command (const char *args, int from_tty) |
| 340 | { |
| 341 | if (mem_use_target ()) |
| 342 | printf_filtered (_("Using memory regions provided by the target.\n")); |
| 343 | else |
| 344 | printf_filtered (_("Using user-defined memory regions.\n")); |
| 345 | |
| 346 | require_target_regions (); |
| 347 | |
| 348 | if (mem_region_list->empty ()) |
| 349 | { |
| 350 | printf_unfiltered (_("There are no memory regions defined.\n")); |
| 351 | return; |
| 352 | } |
| 353 | |
| 354 | printf_filtered ("Num "); |
| 355 | printf_filtered ("Enb "); |
| 356 | printf_filtered ("Low Addr "); |
| 357 | if (gdbarch_addr_bit (target_gdbarch ()) > 32) |
| 358 | printf_filtered (" "); |
| 359 | printf_filtered ("High Addr "); |
| 360 | if (gdbarch_addr_bit (target_gdbarch ()) > 32) |
| 361 | printf_filtered (" "); |
| 362 | printf_filtered ("Attrs "); |
| 363 | printf_filtered ("\n"); |
| 364 | |
| 365 | for (const mem_region &m : *mem_region_list) |
| 366 | { |
| 367 | const char *tmp; |
| 368 | |
| 369 | printf_filtered ("%-3d %-3c\t", |
| 370 | m.number, |
| 371 | m.enabled_p ? 'y' : 'n'); |
| 372 | if (gdbarch_addr_bit (target_gdbarch ()) <= 32) |
| 373 | tmp = hex_string_custom (m.lo, 8); |
| 374 | else |
| 375 | tmp = hex_string_custom (m.lo, 16); |
| 376 | |
| 377 | printf_filtered ("%s ", tmp); |
| 378 | |
| 379 | if (gdbarch_addr_bit (target_gdbarch ()) <= 32) |
| 380 | { |
| 381 | if (m.hi == 0) |
| 382 | tmp = "0x100000000"; |
| 383 | else |
| 384 | tmp = hex_string_custom (m.hi, 8); |
| 385 | } |
| 386 | else |
| 387 | { |
| 388 | if (m.hi == 0) |
| 389 | tmp = "0x10000000000000000"; |
| 390 | else |
| 391 | tmp = hex_string_custom (m.hi, 16); |
| 392 | } |
| 393 | |
| 394 | printf_filtered ("%s ", tmp); |
| 395 | |
| 396 | /* Print a token for each attribute. |
| 397 | |
| 398 | * FIXME: Should we output a comma after each token? It may |
| 399 | * make it easier for users to read, but we'd lose the ability |
| 400 | * to cut-and-paste the list of attributes when defining a new |
| 401 | * region. Perhaps that is not important. |
| 402 | * |
| 403 | * FIXME: If more attributes are added to GDB, the output may |
| 404 | * become cluttered and difficult for users to read. At that |
| 405 | * time, we may want to consider printing tokens only if they |
| 406 | * are different from the default attribute. */ |
| 407 | |
| 408 | switch (m.attrib.mode) |
| 409 | { |
| 410 | case MEM_RW: |
| 411 | printf_filtered ("rw "); |
| 412 | break; |
| 413 | case MEM_RO: |
| 414 | printf_filtered ("ro "); |
| 415 | break; |
| 416 | case MEM_WO: |
| 417 | printf_filtered ("wo "); |
| 418 | break; |
| 419 | case MEM_FLASH: |
| 420 | printf_filtered ("flash blocksize 0x%x ", m.attrib.blocksize); |
| 421 | break; |
| 422 | } |
| 423 | |
| 424 | switch (m.attrib.width) |
| 425 | { |
| 426 | case MEM_WIDTH_8: |
| 427 | printf_filtered ("8 "); |
| 428 | break; |
| 429 | case MEM_WIDTH_16: |
| 430 | printf_filtered ("16 "); |
| 431 | break; |
| 432 | case MEM_WIDTH_32: |
| 433 | printf_filtered ("32 "); |
| 434 | break; |
| 435 | case MEM_WIDTH_64: |
| 436 | printf_filtered ("64 "); |
| 437 | break; |
| 438 | case MEM_WIDTH_UNSPECIFIED: |
| 439 | break; |
| 440 | } |
| 441 | |
| 442 | #if 0 |
| 443 | if (attrib->hwbreak) |
| 444 | printf_filtered ("hwbreak"); |
| 445 | else |
| 446 | printf_filtered ("swbreak"); |
| 447 | #endif |
| 448 | |
| 449 | if (m.attrib.cache) |
| 450 | printf_filtered ("cache "); |
| 451 | else |
| 452 | printf_filtered ("nocache "); |
| 453 | |
| 454 | #if 0 |
| 455 | if (attrib->verify) |
| 456 | printf_filtered ("verify "); |
| 457 | else |
| 458 | printf_filtered ("noverify "); |
| 459 | #endif |
| 460 | |
| 461 | printf_filtered ("\n"); |
| 462 | } |
| 463 | } |
| 464 | \f |
| 465 | |
| 466 | /* Enable the memory region number NUM. */ |
| 467 | |
| 468 | static void |
| 469 | mem_enable (int num) |
| 470 | { |
| 471 | for (mem_region &m : *mem_region_list) |
| 472 | if (m.number == num) |
| 473 | { |
| 474 | m.enabled_p = 1; |
| 475 | return; |
| 476 | } |
| 477 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 478 | } |
| 479 | |
| 480 | static void |
| 481 | enable_mem_command (const char *args, int from_tty) |
| 482 | { |
| 483 | require_user_regions (from_tty); |
| 484 | |
| 485 | target_dcache_invalidate (); |
| 486 | |
| 487 | if (args == NULL || *args == '\0') |
| 488 | { /* Enable all mem regions. */ |
| 489 | for (mem_region &m : *mem_region_list) |
| 490 | m.enabled_p = 1; |
| 491 | } |
| 492 | else |
| 493 | { |
| 494 | number_or_range_parser parser (args); |
| 495 | while (!parser.finished ()) |
| 496 | { |
| 497 | int num = parser.get_number (); |
| 498 | mem_enable (num); |
| 499 | } |
| 500 | } |
| 501 | } |
| 502 | \f |
| 503 | |
| 504 | /* Disable the memory region number NUM. */ |
| 505 | |
| 506 | static void |
| 507 | mem_disable (int num) |
| 508 | { |
| 509 | for (mem_region &m : *mem_region_list) |
| 510 | if (m.number == num) |
| 511 | { |
| 512 | m.enabled_p = 0; |
| 513 | return; |
| 514 | } |
| 515 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 516 | } |
| 517 | |
| 518 | static void |
| 519 | disable_mem_command (const char *args, int from_tty) |
| 520 | { |
| 521 | require_user_regions (from_tty); |
| 522 | |
| 523 | target_dcache_invalidate (); |
| 524 | |
| 525 | if (args == NULL || *args == '\0') |
| 526 | { |
| 527 | for (mem_region &m : *mem_region_list) |
| 528 | m.enabled_p = false; |
| 529 | } |
| 530 | else |
| 531 | { |
| 532 | number_or_range_parser parser (args); |
| 533 | while (!parser.finished ()) |
| 534 | { |
| 535 | int num = parser.get_number (); |
| 536 | mem_disable (num); |
| 537 | } |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | /* Delete the memory region number NUM. */ |
| 542 | |
| 543 | static void |
| 544 | mem_delete (int num) |
| 545 | { |
| 546 | if (!mem_region_list) |
| 547 | { |
| 548 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 549 | return; |
| 550 | } |
| 551 | |
| 552 | auto it = std::remove_if (mem_region_list->begin (), mem_region_list->end (), |
| 553 | [num] (const mem_region &m) |
| 554 | { |
| 555 | return m.number == num; |
| 556 | }); |
| 557 | |
| 558 | if (it != mem_region_list->end ()) |
| 559 | mem_region_list->erase (it); |
| 560 | else |
| 561 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 562 | } |
| 563 | |
| 564 | static void |
| 565 | delete_mem_command (const char *args, int from_tty) |
| 566 | { |
| 567 | require_user_regions (from_tty); |
| 568 | |
| 569 | target_dcache_invalidate (); |
| 570 | |
| 571 | if (args == NULL || *args == '\0') |
| 572 | { |
| 573 | if (query (_("Delete all memory regions? "))) |
| 574 | user_mem_clear (); |
| 575 | dont_repeat (); |
| 576 | return; |
| 577 | } |
| 578 | |
| 579 | number_or_range_parser parser (args); |
| 580 | while (!parser.finished ()) |
| 581 | { |
| 582 | int num = parser.get_number (); |
| 583 | mem_delete (num); |
| 584 | } |
| 585 | |
| 586 | dont_repeat (); |
| 587 | } |
| 588 | |
| 589 | static void |
| 590 | dummy_cmd (const char *args, int from_tty) |
| 591 | { |
| 592 | } |
| 593 | |
| 594 | static struct cmd_list_element *mem_set_cmdlist; |
| 595 | static struct cmd_list_element *mem_show_cmdlist; |
| 596 | |
| 597 | void |
| 598 | _initialize_mem (void) |
| 599 | { |
| 600 | add_com ("mem", class_vars, mem_command, _("\ |
| 601 | Define attributes for memory region or reset memory region handling to " |
| 602 | "target-based.\n\ |
| 603 | Usage: mem auto\n\ |
| 604 | mem LOW HIGH [MODE WIDTH CACHE],\n\ |
| 605 | where MODE may be rw (read/write), ro (read-only) or wo (write-only),\n\ |
| 606 | WIDTH may be 8, 16, 32, or 64, and\n\ |
| 607 | CACHE may be cache or nocache")); |
| 608 | |
| 609 | add_cmd ("mem", class_vars, enable_mem_command, _("\ |
| 610 | Enable memory region.\n\ |
| 611 | Arguments are the IDs of the memory regions to enable.\n\ |
| 612 | Usage: enable mem [ID]...\n\ |
| 613 | Do \"info mem\" to see current list of IDs."), &enablelist); |
| 614 | |
| 615 | add_cmd ("mem", class_vars, disable_mem_command, _("\ |
| 616 | Disable memory region.\n\ |
| 617 | Arguments are the IDs of the memory regions to disable.\n\ |
| 618 | Usage: disable mem [ID]...\n\ |
| 619 | Do \"info mem\" to see current list of IDs."), &disablelist); |
| 620 | |
| 621 | add_cmd ("mem", class_vars, delete_mem_command, _("\ |
| 622 | Delete memory region.\n\ |
| 623 | Arguments are the IDs of the memory regions to delete.\n\ |
| 624 | Usage: delete mem [ID]...\n\ |
| 625 | Do \"info mem\" to see current list of IDs."), &deletelist); |
| 626 | |
| 627 | add_info ("mem", info_mem_command, |
| 628 | _("Memory region attributes.")); |
| 629 | |
| 630 | add_prefix_cmd ("mem", class_vars, dummy_cmd, _("\ |
| 631 | Memory regions settings."), |
| 632 | &mem_set_cmdlist, "set mem ", |
| 633 | 0/* allow-unknown */, &setlist); |
| 634 | add_prefix_cmd ("mem", class_vars, dummy_cmd, _("\ |
| 635 | Memory regions settings."), |
| 636 | &mem_show_cmdlist, "show mem ", |
| 637 | 0/* allow-unknown */, &showlist); |
| 638 | |
| 639 | add_setshow_boolean_cmd ("inaccessible-by-default", no_class, |
| 640 | &inaccessible_by_default, _("\ |
| 641 | Set handling of unknown memory regions."), _("\ |
| 642 | Show handling of unknown memory regions."), _("\ |
| 643 | If on, and some memory map is defined, debugger will emit errors on\n\ |
| 644 | accesses to memory not defined in the memory map. If off, accesses to all\n\ |
| 645 | memory addresses will be allowed."), |
| 646 | NULL, |
| 647 | show_inaccessible_by_default, |
| 648 | &mem_set_cmdlist, |
| 649 | &mem_show_cmdlist); |
| 650 | } |