| 1 | /* Memory attributes support, for GDB. |
| 2 | |
| 3 | Copyright (C) 2001-2013 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "command.h" |
| 22 | #include "gdbcmd.h" |
| 23 | #include "memattr.h" |
| 24 | #include "target.h" |
| 25 | #include "value.h" |
| 26 | #include "language.h" |
| 27 | #include "vec.h" |
| 28 | #include "gdb_string.h" |
| 29 | #include "breakpoint.h" |
| 30 | #include "cli/cli-utils.h" |
| 31 | |
| 32 | const struct mem_attrib default_mem_attrib = |
| 33 | { |
| 34 | MEM_RW, /* mode */ |
| 35 | MEM_WIDTH_UNSPECIFIED, |
| 36 | 0, /* hwbreak */ |
| 37 | 0, /* cache */ |
| 38 | 0, /* verify */ |
| 39 | -1 /* Flash blocksize not specified. */ |
| 40 | }; |
| 41 | |
| 42 | const struct mem_attrib unknown_mem_attrib = |
| 43 | { |
| 44 | MEM_NONE, /* mode */ |
| 45 | MEM_WIDTH_UNSPECIFIED, |
| 46 | 0, /* hwbreak */ |
| 47 | 0, /* cache */ |
| 48 | 0, /* verify */ |
| 49 | -1 /* Flash blocksize not specified. */ |
| 50 | }; |
| 51 | |
| 52 | |
| 53 | VEC(mem_region_s) *mem_region_list, *target_mem_region_list; |
| 54 | static int mem_number = 0; |
| 55 | |
| 56 | /* If this flag is set, the memory region list should be automatically |
| 57 | updated from the target. If it is clear, the list is user-controlled |
| 58 | and should be left alone. */ |
| 59 | static int mem_use_target = 1; |
| 60 | |
| 61 | /* If this flag is set, we have tried to fetch the target memory regions |
| 62 | since the last time it was invalidated. If that list is still |
| 63 | empty, then the target can't supply memory regions. */ |
| 64 | static int target_mem_regions_valid; |
| 65 | |
| 66 | /* If this flag is set, gdb will assume that memory ranges not |
| 67 | specified by the memory map have type MEM_NONE, and will |
| 68 | emit errors on all accesses to that memory. */ |
| 69 | static int inaccessible_by_default = 1; |
| 70 | |
| 71 | static void |
| 72 | show_inaccessible_by_default (struct ui_file *file, int from_tty, |
| 73 | struct cmd_list_element *c, |
| 74 | const char *value) |
| 75 | { |
| 76 | if (inaccessible_by_default) |
| 77 | fprintf_filtered (file, _("Unknown memory addresses will " |
| 78 | "be treated as inaccessible.\n")); |
| 79 | else |
| 80 | fprintf_filtered (file, _("Unknown memory addresses " |
| 81 | "will be treated as RAM.\n")); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | /* Predicate function which returns true if LHS should sort before RHS |
| 86 | in a list of memory regions, useful for VEC_lower_bound. */ |
| 87 | |
| 88 | static int |
| 89 | mem_region_lessthan (const struct mem_region *lhs, |
| 90 | const struct mem_region *rhs) |
| 91 | { |
| 92 | return lhs->lo < rhs->lo; |
| 93 | } |
| 94 | |
| 95 | /* A helper function suitable for qsort, used to sort a |
| 96 | VEC(mem_region_s) by starting address. */ |
| 97 | |
| 98 | int |
| 99 | mem_region_cmp (const void *untyped_lhs, const void *untyped_rhs) |
| 100 | { |
| 101 | const struct mem_region *lhs = untyped_lhs; |
| 102 | const struct mem_region *rhs = untyped_rhs; |
| 103 | |
| 104 | if (lhs->lo < rhs->lo) |
| 105 | return -1; |
| 106 | else if (lhs->lo == rhs->lo) |
| 107 | return 0; |
| 108 | else |
| 109 | return 1; |
| 110 | } |
| 111 | |
| 112 | /* Allocate a new memory region, with default settings. */ |
| 113 | |
| 114 | void |
| 115 | mem_region_init (struct mem_region *new) |
| 116 | { |
| 117 | memset (new, 0, sizeof (struct mem_region)); |
| 118 | new->enabled_p = 1; |
| 119 | new->attrib = default_mem_attrib; |
| 120 | } |
| 121 | |
| 122 | /* This function should be called before any command which would |
| 123 | modify the memory region list. It will handle switching from |
| 124 | a target-provided list to a local list, if necessary. */ |
| 125 | |
| 126 | static void |
| 127 | require_user_regions (int from_tty) |
| 128 | { |
| 129 | struct mem_region *m; |
| 130 | int ix, length; |
| 131 | |
| 132 | /* If we're already using a user-provided list, nothing to do. */ |
| 133 | if (!mem_use_target) |
| 134 | return; |
| 135 | |
| 136 | /* Switch to a user-provided list (possibly a copy of the current |
| 137 | one). */ |
| 138 | mem_use_target = 0; |
| 139 | |
| 140 | /* If we don't have a target-provided region list yet, then |
| 141 | no need to warn. */ |
| 142 | if (mem_region_list == NULL) |
| 143 | return; |
| 144 | |
| 145 | /* Otherwise, let the user know how to get back. */ |
| 146 | if (from_tty) |
| 147 | warning (_("Switching to manual control of memory regions; use " |
| 148 | "\"mem auto\" to fetch regions from the target again.")); |
| 149 | |
| 150 | /* And create a new list for the user to modify. */ |
| 151 | length = VEC_length (mem_region_s, target_mem_region_list); |
| 152 | mem_region_list = VEC_alloc (mem_region_s, length); |
| 153 | for (ix = 0; VEC_iterate (mem_region_s, target_mem_region_list, ix, m); ix++) |
| 154 | VEC_quick_push (mem_region_s, mem_region_list, m); |
| 155 | } |
| 156 | |
| 157 | /* This function should be called before any command which would |
| 158 | read the memory region list, other than those which call |
| 159 | require_user_regions. It will handle fetching the |
| 160 | target-provided list, if necessary. */ |
| 161 | |
| 162 | static void |
| 163 | require_target_regions (void) |
| 164 | { |
| 165 | if (mem_use_target && !target_mem_regions_valid) |
| 166 | { |
| 167 | target_mem_regions_valid = 1; |
| 168 | target_mem_region_list = target_memory_map (); |
| 169 | mem_region_list = target_mem_region_list; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | static void |
| 174 | create_mem_region (CORE_ADDR lo, CORE_ADDR hi, |
| 175 | const struct mem_attrib *attrib) |
| 176 | { |
| 177 | struct mem_region new; |
| 178 | int i, ix; |
| 179 | |
| 180 | /* lo == hi is a useless empty region. */ |
| 181 | if (lo >= hi && hi != 0) |
| 182 | { |
| 183 | printf_unfiltered (_("invalid memory region: low >= high\n")); |
| 184 | return; |
| 185 | } |
| 186 | |
| 187 | mem_region_init (&new); |
| 188 | new.lo = lo; |
| 189 | new.hi = hi; |
| 190 | |
| 191 | ix = VEC_lower_bound (mem_region_s, mem_region_list, &new, |
| 192 | mem_region_lessthan); |
| 193 | |
| 194 | /* Check for an overlapping memory region. We only need to check |
| 195 | in the vicinity - at most one before and one after the |
| 196 | insertion point. */ |
| 197 | for (i = ix - 1; i < ix + 1; i++) |
| 198 | { |
| 199 | struct mem_region *n; |
| 200 | |
| 201 | if (i < 0) |
| 202 | continue; |
| 203 | if (i >= VEC_length (mem_region_s, mem_region_list)) |
| 204 | continue; |
| 205 | |
| 206 | n = VEC_index (mem_region_s, mem_region_list, i); |
| 207 | |
| 208 | if ((lo >= n->lo && (lo < n->hi || n->hi == 0)) |
| 209 | || (hi > n->lo && (hi <= n->hi || n->hi == 0)) |
| 210 | || (lo <= n->lo && ((hi >= n->hi && n->hi != 0) || hi == 0))) |
| 211 | { |
| 212 | printf_unfiltered (_("overlapping memory region\n")); |
| 213 | return; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | new.number = ++mem_number; |
| 218 | new.attrib = *attrib; |
| 219 | VEC_safe_insert (mem_region_s, mem_region_list, ix, &new); |
| 220 | } |
| 221 | |
| 222 | /* |
| 223 | * Look up the memory region cooresponding to ADDR. |
| 224 | */ |
| 225 | struct mem_region * |
| 226 | lookup_mem_region (CORE_ADDR addr) |
| 227 | { |
| 228 | static struct mem_region region; |
| 229 | struct mem_region *m; |
| 230 | CORE_ADDR lo; |
| 231 | CORE_ADDR hi; |
| 232 | int ix; |
| 233 | |
| 234 | require_target_regions (); |
| 235 | |
| 236 | /* First we initialize LO and HI so that they describe the entire |
| 237 | memory space. As we process the memory region chain, they are |
| 238 | redefined to describe the minimal region containing ADDR. LO |
| 239 | and HI are used in the case where no memory region is defined |
| 240 | that contains ADDR. If a memory region is disabled, it is |
| 241 | treated as if it does not exist. The initial values for LO |
| 242 | and HI represent the bottom and top of memory. */ |
| 243 | |
| 244 | lo = 0; |
| 245 | hi = 0; |
| 246 | |
| 247 | /* Either find memory range containing ADDRESS, or set LO and HI |
| 248 | to the nearest boundaries of an existing memory range. |
| 249 | |
| 250 | If we ever want to support a huge list of memory regions, this |
| 251 | check should be replaced with a binary search (probably using |
| 252 | VEC_lower_bound). */ |
| 253 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 254 | { |
| 255 | if (m->enabled_p == 1) |
| 256 | { |
| 257 | /* If the address is in the memory region, return that |
| 258 | memory range. */ |
| 259 | if (addr >= m->lo && (addr < m->hi || m->hi == 0)) |
| 260 | return m; |
| 261 | |
| 262 | /* This (correctly) won't match if m->hi == 0, representing |
| 263 | the top of the address space, because CORE_ADDR is unsigned; |
| 264 | no value of LO is less than zero. */ |
| 265 | if (addr >= m->hi && lo < m->hi) |
| 266 | lo = m->hi; |
| 267 | |
| 268 | /* This will never set HI to zero; if we're here and ADDR |
| 269 | is at or below M, and the region starts at zero, then ADDR |
| 270 | would have been in the region. */ |
| 271 | if (addr <= m->lo && (hi == 0 || hi > m->lo)) |
| 272 | hi = m->lo; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | /* Because no region was found, we must cons up one based on what |
| 277 | was learned above. */ |
| 278 | region.lo = lo; |
| 279 | region.hi = hi; |
| 280 | |
| 281 | /* When no memory map is defined at all, we always return |
| 282 | 'default_mem_attrib', so that we do not make all memory |
| 283 | inaccessible for targets that don't provide a memory map. */ |
| 284 | if (inaccessible_by_default && !VEC_empty (mem_region_s, mem_region_list)) |
| 285 | region.attrib = unknown_mem_attrib; |
| 286 | else |
| 287 | region.attrib = default_mem_attrib; |
| 288 | |
| 289 | return ®ion; |
| 290 | } |
| 291 | |
| 292 | /* Invalidate any memory regions fetched from the target. */ |
| 293 | |
| 294 | void |
| 295 | invalidate_target_mem_regions (void) |
| 296 | { |
| 297 | if (!target_mem_regions_valid) |
| 298 | return; |
| 299 | |
| 300 | target_mem_regions_valid = 0; |
| 301 | VEC_free (mem_region_s, target_mem_region_list); |
| 302 | if (mem_use_target) |
| 303 | mem_region_list = NULL; |
| 304 | } |
| 305 | |
| 306 | /* Clear memory region list. */ |
| 307 | |
| 308 | static void |
| 309 | mem_clear (void) |
| 310 | { |
| 311 | VEC_free (mem_region_s, mem_region_list); |
| 312 | } |
| 313 | \f |
| 314 | |
| 315 | static void |
| 316 | mem_command (char *args, int from_tty) |
| 317 | { |
| 318 | CORE_ADDR lo, hi; |
| 319 | char *tok; |
| 320 | struct mem_attrib attrib; |
| 321 | |
| 322 | if (!args) |
| 323 | error_no_arg (_("No mem")); |
| 324 | |
| 325 | /* For "mem auto", switch back to using a target provided list. */ |
| 326 | if (strcmp (args, "auto") == 0) |
| 327 | { |
| 328 | if (mem_use_target) |
| 329 | return; |
| 330 | |
| 331 | if (mem_region_list != target_mem_region_list) |
| 332 | { |
| 333 | mem_clear (); |
| 334 | mem_region_list = target_mem_region_list; |
| 335 | } |
| 336 | |
| 337 | mem_use_target = 1; |
| 338 | return; |
| 339 | } |
| 340 | |
| 341 | require_user_regions (from_tty); |
| 342 | |
| 343 | tok = strtok (args, " \t"); |
| 344 | if (!tok) |
| 345 | error (_("no lo address")); |
| 346 | lo = parse_and_eval_address (tok); |
| 347 | |
| 348 | tok = strtok (NULL, " \t"); |
| 349 | if (!tok) |
| 350 | error (_("no hi address")); |
| 351 | hi = parse_and_eval_address (tok); |
| 352 | |
| 353 | attrib = default_mem_attrib; |
| 354 | while ((tok = strtok (NULL, " \t")) != NULL) |
| 355 | { |
| 356 | if (strcmp (tok, "rw") == 0) |
| 357 | attrib.mode = MEM_RW; |
| 358 | else if (strcmp (tok, "ro") == 0) |
| 359 | attrib.mode = MEM_RO; |
| 360 | else if (strcmp (tok, "wo") == 0) |
| 361 | attrib.mode = MEM_WO; |
| 362 | |
| 363 | else if (strcmp (tok, "8") == 0) |
| 364 | attrib.width = MEM_WIDTH_8; |
| 365 | else if (strcmp (tok, "16") == 0) |
| 366 | { |
| 367 | if ((lo % 2 != 0) || (hi % 2 != 0)) |
| 368 | error (_("region bounds not 16 bit aligned")); |
| 369 | attrib.width = MEM_WIDTH_16; |
| 370 | } |
| 371 | else if (strcmp (tok, "32") == 0) |
| 372 | { |
| 373 | if ((lo % 4 != 0) || (hi % 4 != 0)) |
| 374 | error (_("region bounds not 32 bit aligned")); |
| 375 | attrib.width = MEM_WIDTH_32; |
| 376 | } |
| 377 | else if (strcmp (tok, "64") == 0) |
| 378 | { |
| 379 | if ((lo % 8 != 0) || (hi % 8 != 0)) |
| 380 | error (_("region bounds not 64 bit aligned")); |
| 381 | attrib.width = MEM_WIDTH_64; |
| 382 | } |
| 383 | |
| 384 | #if 0 |
| 385 | else if (strcmp (tok, "hwbreak") == 0) |
| 386 | attrib.hwbreak = 1; |
| 387 | else if (strcmp (tok, "swbreak") == 0) |
| 388 | attrib.hwbreak = 0; |
| 389 | #endif |
| 390 | |
| 391 | else if (strcmp (tok, "cache") == 0) |
| 392 | attrib.cache = 1; |
| 393 | else if (strcmp (tok, "nocache") == 0) |
| 394 | attrib.cache = 0; |
| 395 | |
| 396 | #if 0 |
| 397 | else if (strcmp (tok, "verify") == 0) |
| 398 | attrib.verify = 1; |
| 399 | else if (strcmp (tok, "noverify") == 0) |
| 400 | attrib.verify = 0; |
| 401 | #endif |
| 402 | |
| 403 | else |
| 404 | error (_("unknown attribute: %s"), tok); |
| 405 | } |
| 406 | |
| 407 | create_mem_region (lo, hi, &attrib); |
| 408 | } |
| 409 | \f |
| 410 | |
| 411 | static void |
| 412 | mem_info_command (char *args, int from_tty) |
| 413 | { |
| 414 | struct mem_region *m; |
| 415 | struct mem_attrib *attrib; |
| 416 | int ix; |
| 417 | |
| 418 | if (mem_use_target) |
| 419 | printf_filtered (_("Using memory regions provided by the target.\n")); |
| 420 | else |
| 421 | printf_filtered (_("Using user-defined memory regions.\n")); |
| 422 | |
| 423 | require_target_regions (); |
| 424 | |
| 425 | if (!mem_region_list) |
| 426 | { |
| 427 | printf_unfiltered (_("There are no memory regions defined.\n")); |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | printf_filtered ("Num "); |
| 432 | printf_filtered ("Enb "); |
| 433 | printf_filtered ("Low Addr "); |
| 434 | if (gdbarch_addr_bit (target_gdbarch ()) > 32) |
| 435 | printf_filtered (" "); |
| 436 | printf_filtered ("High Addr "); |
| 437 | if (gdbarch_addr_bit (target_gdbarch ()) > 32) |
| 438 | printf_filtered (" "); |
| 439 | printf_filtered ("Attrs "); |
| 440 | printf_filtered ("\n"); |
| 441 | |
| 442 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 443 | { |
| 444 | char *tmp; |
| 445 | |
| 446 | printf_filtered ("%-3d %-3c\t", |
| 447 | m->number, |
| 448 | m->enabled_p ? 'y' : 'n'); |
| 449 | if (gdbarch_addr_bit (target_gdbarch ()) <= 32) |
| 450 | tmp = hex_string_custom ((unsigned long) m->lo, 8); |
| 451 | else |
| 452 | tmp = hex_string_custom ((unsigned long) m->lo, 16); |
| 453 | |
| 454 | printf_filtered ("%s ", tmp); |
| 455 | |
| 456 | if (gdbarch_addr_bit (target_gdbarch ()) <= 32) |
| 457 | { |
| 458 | if (m->hi == 0) |
| 459 | tmp = "0x100000000"; |
| 460 | else |
| 461 | tmp = hex_string_custom ((unsigned long) m->hi, 8); |
| 462 | } |
| 463 | else |
| 464 | { |
| 465 | if (m->hi == 0) |
| 466 | tmp = "0x10000000000000000"; |
| 467 | else |
| 468 | tmp = hex_string_custom ((unsigned long) m->hi, 16); |
| 469 | } |
| 470 | |
| 471 | printf_filtered ("%s ", tmp); |
| 472 | |
| 473 | /* Print a token for each attribute. |
| 474 | |
| 475 | * FIXME: Should we output a comma after each token? It may |
| 476 | * make it easier for users to read, but we'd lose the ability |
| 477 | * to cut-and-paste the list of attributes when defining a new |
| 478 | * region. Perhaps that is not important. |
| 479 | * |
| 480 | * FIXME: If more attributes are added to GDB, the output may |
| 481 | * become cluttered and difficult for users to read. At that |
| 482 | * time, we may want to consider printing tokens only if they |
| 483 | * are different from the default attribute. */ |
| 484 | |
| 485 | attrib = &m->attrib; |
| 486 | switch (attrib->mode) |
| 487 | { |
| 488 | case MEM_RW: |
| 489 | printf_filtered ("rw "); |
| 490 | break; |
| 491 | case MEM_RO: |
| 492 | printf_filtered ("ro "); |
| 493 | break; |
| 494 | case MEM_WO: |
| 495 | printf_filtered ("wo "); |
| 496 | break; |
| 497 | case MEM_FLASH: |
| 498 | printf_filtered ("flash blocksize 0x%x ", attrib->blocksize); |
| 499 | break; |
| 500 | } |
| 501 | |
| 502 | switch (attrib->width) |
| 503 | { |
| 504 | case MEM_WIDTH_8: |
| 505 | printf_filtered ("8 "); |
| 506 | break; |
| 507 | case MEM_WIDTH_16: |
| 508 | printf_filtered ("16 "); |
| 509 | break; |
| 510 | case MEM_WIDTH_32: |
| 511 | printf_filtered ("32 "); |
| 512 | break; |
| 513 | case MEM_WIDTH_64: |
| 514 | printf_filtered ("64 "); |
| 515 | break; |
| 516 | case MEM_WIDTH_UNSPECIFIED: |
| 517 | break; |
| 518 | } |
| 519 | |
| 520 | #if 0 |
| 521 | if (attrib->hwbreak) |
| 522 | printf_filtered ("hwbreak"); |
| 523 | else |
| 524 | printf_filtered ("swbreak"); |
| 525 | #endif |
| 526 | |
| 527 | if (attrib->cache) |
| 528 | printf_filtered ("cache "); |
| 529 | else |
| 530 | printf_filtered ("nocache "); |
| 531 | |
| 532 | #if 0 |
| 533 | if (attrib->verify) |
| 534 | printf_filtered ("verify "); |
| 535 | else |
| 536 | printf_filtered ("noverify "); |
| 537 | #endif |
| 538 | |
| 539 | printf_filtered ("\n"); |
| 540 | |
| 541 | gdb_flush (gdb_stdout); |
| 542 | } |
| 543 | } |
| 544 | \f |
| 545 | |
| 546 | /* Enable the memory region number NUM. */ |
| 547 | |
| 548 | static void |
| 549 | mem_enable (int num) |
| 550 | { |
| 551 | struct mem_region *m; |
| 552 | int ix; |
| 553 | |
| 554 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 555 | if (m->number == num) |
| 556 | { |
| 557 | m->enabled_p = 1; |
| 558 | return; |
| 559 | } |
| 560 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 561 | } |
| 562 | |
| 563 | static void |
| 564 | mem_enable_command (char *args, int from_tty) |
| 565 | { |
| 566 | int num; |
| 567 | struct mem_region *m; |
| 568 | int ix; |
| 569 | |
| 570 | require_user_regions (from_tty); |
| 571 | |
| 572 | target_dcache_invalidate (); |
| 573 | |
| 574 | if (args == NULL || *args == '\0') |
| 575 | { /* Enable all mem regions. */ |
| 576 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 577 | m->enabled_p = 1; |
| 578 | } |
| 579 | else |
| 580 | { |
| 581 | struct get_number_or_range_state state; |
| 582 | |
| 583 | init_number_or_range (&state, args); |
| 584 | while (!state.finished) |
| 585 | { |
| 586 | num = get_number_or_range (&state); |
| 587 | mem_enable (num); |
| 588 | } |
| 589 | } |
| 590 | } |
| 591 | \f |
| 592 | |
| 593 | /* Disable the memory region number NUM. */ |
| 594 | |
| 595 | static void |
| 596 | mem_disable (int num) |
| 597 | { |
| 598 | struct mem_region *m; |
| 599 | int ix; |
| 600 | |
| 601 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 602 | if (m->number == num) |
| 603 | { |
| 604 | m->enabled_p = 0; |
| 605 | return; |
| 606 | } |
| 607 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | mem_disable_command (char *args, int from_tty) |
| 612 | { |
| 613 | int num; |
| 614 | struct mem_region *m; |
| 615 | int ix; |
| 616 | |
| 617 | require_user_regions (from_tty); |
| 618 | |
| 619 | target_dcache_invalidate (); |
| 620 | |
| 621 | if (args == NULL || *args == '\0') |
| 622 | { |
| 623 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 624 | m->enabled_p = 0; |
| 625 | } |
| 626 | else |
| 627 | { |
| 628 | struct get_number_or_range_state state; |
| 629 | |
| 630 | init_number_or_range (&state, args); |
| 631 | while (!state.finished) |
| 632 | { |
| 633 | num = get_number_or_range (&state); |
| 634 | mem_disable (num); |
| 635 | } |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | /* Delete the memory region number NUM. */ |
| 640 | |
| 641 | static void |
| 642 | mem_delete (int num) |
| 643 | { |
| 644 | struct mem_region *m; |
| 645 | int ix; |
| 646 | |
| 647 | if (!mem_region_list) |
| 648 | { |
| 649 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 650 | return; |
| 651 | } |
| 652 | |
| 653 | for (ix = 0; VEC_iterate (mem_region_s, mem_region_list, ix, m); ix++) |
| 654 | if (m->number == num) |
| 655 | break; |
| 656 | |
| 657 | if (m == NULL) |
| 658 | { |
| 659 | printf_unfiltered (_("No memory region number %d.\n"), num); |
| 660 | return; |
| 661 | } |
| 662 | |
| 663 | VEC_ordered_remove (mem_region_s, mem_region_list, ix); |
| 664 | } |
| 665 | |
| 666 | static void |
| 667 | mem_delete_command (char *args, int from_tty) |
| 668 | { |
| 669 | int num; |
| 670 | struct get_number_or_range_state state; |
| 671 | |
| 672 | require_user_regions (from_tty); |
| 673 | |
| 674 | target_dcache_invalidate (); |
| 675 | |
| 676 | if (args == NULL || *args == '\0') |
| 677 | { |
| 678 | if (query (_("Delete all memory regions? "))) |
| 679 | mem_clear (); |
| 680 | dont_repeat (); |
| 681 | return; |
| 682 | } |
| 683 | |
| 684 | init_number_or_range (&state, args); |
| 685 | while (!state.finished) |
| 686 | { |
| 687 | num = get_number_or_range (&state); |
| 688 | mem_delete (num); |
| 689 | } |
| 690 | |
| 691 | dont_repeat (); |
| 692 | } |
| 693 | |
| 694 | static void |
| 695 | dummy_cmd (char *args, int from_tty) |
| 696 | { |
| 697 | } |
| 698 | \f |
| 699 | extern initialize_file_ftype _initialize_mem; /* -Wmissing-prototype */ |
| 700 | |
| 701 | static struct cmd_list_element *mem_set_cmdlist; |
| 702 | static struct cmd_list_element *mem_show_cmdlist; |
| 703 | |
| 704 | void |
| 705 | _initialize_mem (void) |
| 706 | { |
| 707 | add_com ("mem", class_vars, mem_command, _("\ |
| 708 | Define attributes for memory region or reset memory region handling to\n\ |
| 709 | target-based.\n\ |
| 710 | Usage: mem auto\n\ |
| 711 | mem <lo addr> <hi addr> [<mode> <width> <cache>],\n\ |
| 712 | where <mode> may be rw (read/write), ro (read-only) or wo (write-only),\n\ |
| 713 | <width> may be 8, 16, 32, or 64, and\n\ |
| 714 | <cache> may be cache or nocache")); |
| 715 | |
| 716 | add_cmd ("mem", class_vars, mem_enable_command, _("\ |
| 717 | Enable memory region.\n\ |
| 718 | Arguments are the code numbers of the memory regions to enable.\n\ |
| 719 | Usage: enable mem <code number>...\n\ |
| 720 | Do \"info mem\" to see current list of code numbers."), &enablelist); |
| 721 | |
| 722 | add_cmd ("mem", class_vars, mem_disable_command, _("\ |
| 723 | Disable memory region.\n\ |
| 724 | Arguments are the code numbers of the memory regions to disable.\n\ |
| 725 | Usage: disable mem <code number>...\n\ |
| 726 | Do \"info mem\" to see current list of code numbers."), &disablelist); |
| 727 | |
| 728 | add_cmd ("mem", class_vars, mem_delete_command, _("\ |
| 729 | Delete memory region.\n\ |
| 730 | Arguments are the code numbers of the memory regions to delete.\n\ |
| 731 | Usage: delete mem <code number>...\n\ |
| 732 | Do \"info mem\" to see current list of code numbers."), &deletelist); |
| 733 | |
| 734 | add_info ("mem", mem_info_command, |
| 735 | _("Memory region attributes")); |
| 736 | |
| 737 | add_prefix_cmd ("mem", class_vars, dummy_cmd, _("\ |
| 738 | Memory regions settings"), |
| 739 | &mem_set_cmdlist, "set mem ", |
| 740 | 0/* allow-unknown */, &setlist); |
| 741 | add_prefix_cmd ("mem", class_vars, dummy_cmd, _("\ |
| 742 | Memory regions settings"), |
| 743 | &mem_show_cmdlist, "show mem ", |
| 744 | 0/* allow-unknown */, &showlist); |
| 745 | |
| 746 | add_setshow_boolean_cmd ("inaccessible-by-default", no_class, |
| 747 | &inaccessible_by_default, _("\ |
| 748 | Set handling of unknown memory regions."), _("\ |
| 749 | Show handling of unknown memory regions."), _("\ |
| 750 | If on, and some memory map is defined, debugger will emit errors on\n\ |
| 751 | accesses to memory not defined in the memory map. If off, accesses to all\n\ |
| 752 | memory addresses will be allowed."), |
| 753 | NULL, |
| 754 | show_inaccessible_by_default, |
| 755 | &mem_set_cmdlist, |
| 756 | &mem_show_cmdlist); |
| 757 | } |