| 1 | /* Target description support for GDB. |
| 2 | |
| 3 | Copyright (C) 2006-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by CodeSourcery. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "arch-utils.h" |
| 24 | #include "gdbcmd.h" |
| 25 | #include "gdbtypes.h" |
| 26 | #include "reggroups.h" |
| 27 | #include "target.h" |
| 28 | #include "target-descriptions.h" |
| 29 | #include "vec.h" |
| 30 | #include "xml-support.h" |
| 31 | #include "xml-tdesc.h" |
| 32 | #include "osabi.h" |
| 33 | |
| 34 | #include "gdb_obstack.h" |
| 35 | #include "hashtab.h" |
| 36 | #include "inferior.h" |
| 37 | |
| 38 | /* Types. */ |
| 39 | |
| 40 | typedef struct property |
| 41 | { |
| 42 | char *key; |
| 43 | char *value; |
| 44 | } property_s; |
| 45 | DEF_VEC_O(property_s); |
| 46 | |
| 47 | /* An individual register from a target description. */ |
| 48 | |
| 49 | typedef struct tdesc_reg |
| 50 | { |
| 51 | /* The name of this register. In standard features, it may be |
| 52 | recognized by the architecture support code, or it may be purely |
| 53 | for the user. */ |
| 54 | char *name; |
| 55 | |
| 56 | /* The register number used by this target to refer to this |
| 57 | register. This is used for remote p/P packets and to determine |
| 58 | the ordering of registers in the remote g/G packets. */ |
| 59 | long target_regnum; |
| 60 | |
| 61 | /* If this flag is set, GDB should save and restore this register |
| 62 | around calls to an inferior function. */ |
| 63 | int save_restore; |
| 64 | |
| 65 | /* The name of the register group containing this register, or NULL |
| 66 | if the group should be automatically determined from the |
| 67 | register's type. If this is "general", "float", or "vector", the |
| 68 | corresponding "info" command should display this register's |
| 69 | value. It can be an arbitrary string, but should be limited to |
| 70 | alphanumeric characters and internal hyphens. Currently other |
| 71 | strings are ignored (treated as NULL). */ |
| 72 | char *group; |
| 73 | |
| 74 | /* The size of the register, in bits. */ |
| 75 | int bitsize; |
| 76 | |
| 77 | /* The type of the register. This string corresponds to either |
| 78 | a named type from the target description or a predefined |
| 79 | type from GDB. */ |
| 80 | char *type; |
| 81 | |
| 82 | /* The target-described type corresponding to TYPE, if found. */ |
| 83 | struct tdesc_type *tdesc_type; |
| 84 | } *tdesc_reg_p; |
| 85 | DEF_VEC_P(tdesc_reg_p); |
| 86 | |
| 87 | /* A named type from a target description. */ |
| 88 | |
| 89 | typedef struct tdesc_type_field |
| 90 | { |
| 91 | char *name; |
| 92 | struct tdesc_type *type; |
| 93 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
| 94 | not -1 (bitfield). For enum values, start is the value (which could be |
| 95 | -1), end is -1. */ |
| 96 | int start, end; |
| 97 | } tdesc_type_field; |
| 98 | DEF_VEC_O(tdesc_type_field); |
| 99 | |
| 100 | enum tdesc_type_kind |
| 101 | { |
| 102 | /* Predefined types. */ |
| 103 | TDESC_TYPE_BOOL, |
| 104 | TDESC_TYPE_INT8, |
| 105 | TDESC_TYPE_INT16, |
| 106 | TDESC_TYPE_INT32, |
| 107 | TDESC_TYPE_INT64, |
| 108 | TDESC_TYPE_INT128, |
| 109 | TDESC_TYPE_UINT8, |
| 110 | TDESC_TYPE_UINT16, |
| 111 | TDESC_TYPE_UINT32, |
| 112 | TDESC_TYPE_UINT64, |
| 113 | TDESC_TYPE_UINT128, |
| 114 | TDESC_TYPE_CODE_PTR, |
| 115 | TDESC_TYPE_DATA_PTR, |
| 116 | TDESC_TYPE_IEEE_SINGLE, |
| 117 | TDESC_TYPE_IEEE_DOUBLE, |
| 118 | TDESC_TYPE_ARM_FPA_EXT, |
| 119 | TDESC_TYPE_I387_EXT, |
| 120 | |
| 121 | /* Types defined by a target feature. */ |
| 122 | TDESC_TYPE_VECTOR, |
| 123 | TDESC_TYPE_STRUCT, |
| 124 | TDESC_TYPE_UNION, |
| 125 | TDESC_TYPE_FLAGS, |
| 126 | TDESC_TYPE_ENUM |
| 127 | }; |
| 128 | |
| 129 | typedef struct tdesc_type |
| 130 | { |
| 131 | /* The name of this type. */ |
| 132 | char *name; |
| 133 | |
| 134 | /* Identify the kind of this type. */ |
| 135 | enum tdesc_type_kind kind; |
| 136 | |
| 137 | /* Kind-specific data. */ |
| 138 | union |
| 139 | { |
| 140 | /* Vector type. */ |
| 141 | struct |
| 142 | { |
| 143 | struct tdesc_type *type; |
| 144 | int count; |
| 145 | } v; |
| 146 | |
| 147 | /* Struct, union, flags, or enum type. */ |
| 148 | struct |
| 149 | { |
| 150 | VEC(tdesc_type_field) *fields; |
| 151 | int size; |
| 152 | } u; |
| 153 | } u; |
| 154 | } *tdesc_type_p; |
| 155 | DEF_VEC_P(tdesc_type_p); |
| 156 | |
| 157 | /* A feature from a target description. Each feature is a collection |
| 158 | of other elements, e.g. registers and types. */ |
| 159 | |
| 160 | typedef struct tdesc_feature |
| 161 | { |
| 162 | /* The name of this feature. It may be recognized by the architecture |
| 163 | support code. */ |
| 164 | char *name; |
| 165 | |
| 166 | /* The registers associated with this feature. */ |
| 167 | VEC(tdesc_reg_p) *registers; |
| 168 | |
| 169 | /* The types associated with this feature. */ |
| 170 | VEC(tdesc_type_p) *types; |
| 171 | } *tdesc_feature_p; |
| 172 | DEF_VEC_P(tdesc_feature_p); |
| 173 | |
| 174 | /* A compatible architecture from a target description. */ |
| 175 | typedef const struct bfd_arch_info *arch_p; |
| 176 | DEF_VEC_P(arch_p); |
| 177 | |
| 178 | /* A target description. */ |
| 179 | |
| 180 | struct target_desc |
| 181 | { |
| 182 | /* The architecture reported by the target, if any. */ |
| 183 | const struct bfd_arch_info *arch; |
| 184 | |
| 185 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
| 186 | otherwise. */ |
| 187 | enum gdb_osabi osabi; |
| 188 | |
| 189 | /* The list of compatible architectures reported by the target. */ |
| 190 | VEC(arch_p) *compatible; |
| 191 | |
| 192 | /* Any architecture-specific properties specified by the target. */ |
| 193 | VEC(property_s) *properties; |
| 194 | |
| 195 | /* The features associated with this target. */ |
| 196 | VEC(tdesc_feature_p) *features; |
| 197 | }; |
| 198 | |
| 199 | /* Per-architecture data associated with a target description. The |
| 200 | target description may be shared by multiple architectures, but |
| 201 | this data is private to one gdbarch. */ |
| 202 | |
| 203 | typedef struct tdesc_arch_reg |
| 204 | { |
| 205 | struct tdesc_reg *reg; |
| 206 | struct type *type; |
| 207 | } tdesc_arch_reg; |
| 208 | DEF_VEC_O(tdesc_arch_reg); |
| 209 | |
| 210 | struct tdesc_arch_data |
| 211 | { |
| 212 | /* A list of register/type pairs, indexed by GDB's internal register number. |
| 213 | During initialization of the gdbarch this list is used to store |
| 214 | registers which the architecture assigns a fixed register number. |
| 215 | Registers which are NULL in this array, or off the end, are |
| 216 | treated as zero-sized and nameless (i.e. placeholders in the |
| 217 | numbering). */ |
| 218 | VEC(tdesc_arch_reg) *arch_regs; |
| 219 | |
| 220 | /* Functions which report the register name, type, and reggroups for |
| 221 | pseudo-registers. */ |
| 222 | gdbarch_register_name_ftype *pseudo_register_name; |
| 223 | gdbarch_register_type_ftype *pseudo_register_type; |
| 224 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; |
| 225 | }; |
| 226 | |
| 227 | /* Info about an inferior's target description. There's one of these |
| 228 | for each inferior. */ |
| 229 | |
| 230 | struct target_desc_info |
| 231 | { |
| 232 | /* A flag indicating that a description has already been fetched |
| 233 | from the target, so it should not be queried again. */ |
| 234 | |
| 235 | int fetched; |
| 236 | |
| 237 | /* The description fetched from the target, or NULL if the target |
| 238 | did not supply any description. Only valid when |
| 239 | target_desc_fetched is set. Only the description initialization |
| 240 | code should access this; normally, the description should be |
| 241 | accessed through the gdbarch object. */ |
| 242 | |
| 243 | const struct target_desc *tdesc; |
| 244 | |
| 245 | /* The filename to read a target description from, as set by "set |
| 246 | tdesc filename ..." */ |
| 247 | |
| 248 | char *filename; |
| 249 | }; |
| 250 | |
| 251 | /* Get the inferior INF's target description info, allocating one on |
| 252 | the stop if necessary. */ |
| 253 | |
| 254 | static struct target_desc_info * |
| 255 | get_tdesc_info (struct inferior *inf) |
| 256 | { |
| 257 | if (inf->tdesc_info == NULL) |
| 258 | inf->tdesc_info = XCNEW (struct target_desc_info); |
| 259 | return inf->tdesc_info; |
| 260 | } |
| 261 | |
| 262 | /* A handle for architecture-specific data associated with the |
| 263 | target description (see struct tdesc_arch_data). */ |
| 264 | |
| 265 | static struct gdbarch_data *tdesc_data; |
| 266 | |
| 267 | /* See target-descriptions.h. */ |
| 268 | |
| 269 | int |
| 270 | target_desc_info_from_user_p (struct target_desc_info *info) |
| 271 | { |
| 272 | return info != NULL && info->filename != NULL; |
| 273 | } |
| 274 | |
| 275 | /* See target-descriptions.h. */ |
| 276 | |
| 277 | void |
| 278 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) |
| 279 | { |
| 280 | struct target_desc_info *src = get_tdesc_info (srcinf); |
| 281 | struct target_desc_info *dest = get_tdesc_info (destinf); |
| 282 | |
| 283 | dest->fetched = src->fetched; |
| 284 | dest->tdesc = src->tdesc; |
| 285 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; |
| 286 | } |
| 287 | |
| 288 | /* See target-descriptions.h. */ |
| 289 | |
| 290 | void |
| 291 | target_desc_info_free (struct target_desc_info *tdesc_info) |
| 292 | { |
| 293 | if (tdesc_info != NULL) |
| 294 | { |
| 295 | xfree (tdesc_info->filename); |
| 296 | xfree (tdesc_info); |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | /* Convenience helper macros. */ |
| 301 | |
| 302 | #define target_desc_fetched \ |
| 303 | get_tdesc_info (current_inferior ())->fetched |
| 304 | #define current_target_desc \ |
| 305 | get_tdesc_info (current_inferior ())->tdesc |
| 306 | #define target_description_filename \ |
| 307 | get_tdesc_info (current_inferior ())->filename |
| 308 | |
| 309 | /* The string manipulated by the "set tdesc filename ..." command. */ |
| 310 | |
| 311 | static char *tdesc_filename_cmd_string; |
| 312 | |
| 313 | /* Fetch the current target's description, and switch the current |
| 314 | architecture to one which incorporates that description. */ |
| 315 | |
| 316 | void |
| 317 | target_find_description (void) |
| 318 | { |
| 319 | /* If we've already fetched a description from the target, don't do |
| 320 | it again. This allows a target to fetch the description early, |
| 321 | during its to_open or to_create_inferior, if it needs extra |
| 322 | information about the target to initialize. */ |
| 323 | if (target_desc_fetched) |
| 324 | return; |
| 325 | |
| 326 | /* The current architecture should not have any target description |
| 327 | specified. It should have been cleared, e.g. when we |
| 328 | disconnected from the previous target. */ |
| 329 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
| 330 | |
| 331 | /* First try to fetch an XML description from the user-specified |
| 332 | file. */ |
| 333 | current_target_desc = NULL; |
| 334 | if (target_description_filename != NULL |
| 335 | && *target_description_filename != '\0') |
| 336 | current_target_desc |
| 337 | = file_read_description_xml (target_description_filename); |
| 338 | |
| 339 | /* Next try to read the description from the current target using |
| 340 | target objects. */ |
| 341 | if (current_target_desc == NULL) |
| 342 | current_target_desc = target_read_description_xml (¤t_target); |
| 343 | |
| 344 | /* If that failed try a target-specific hook. */ |
| 345 | if (current_target_desc == NULL) |
| 346 | current_target_desc = target_read_description (¤t_target); |
| 347 | |
| 348 | /* If a non-NULL description was returned, then update the current |
| 349 | architecture. */ |
| 350 | if (current_target_desc) |
| 351 | { |
| 352 | struct gdbarch_info info; |
| 353 | |
| 354 | gdbarch_info_init (&info); |
| 355 | info.target_desc = current_target_desc; |
| 356 | if (!gdbarch_update_p (info)) |
| 357 | warning (_("Architecture rejected target-supplied description")); |
| 358 | else |
| 359 | { |
| 360 | struct tdesc_arch_data *data; |
| 361 | |
| 362 | data = ((struct tdesc_arch_data *) |
| 363 | gdbarch_data (target_gdbarch (), tdesc_data)); |
| 364 | if (tdesc_has_registers (current_target_desc) |
| 365 | && data->arch_regs == NULL) |
| 366 | warning (_("Target-supplied registers are not supported " |
| 367 | "by the current architecture")); |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | /* Now that we know this description is usable, record that we |
| 372 | fetched it. */ |
| 373 | target_desc_fetched = 1; |
| 374 | } |
| 375 | |
| 376 | /* Discard any description fetched from the current target, and switch |
| 377 | the current architecture to one with no target description. */ |
| 378 | |
| 379 | void |
| 380 | target_clear_description (void) |
| 381 | { |
| 382 | struct gdbarch_info info; |
| 383 | |
| 384 | if (!target_desc_fetched) |
| 385 | return; |
| 386 | |
| 387 | target_desc_fetched = 0; |
| 388 | current_target_desc = NULL; |
| 389 | |
| 390 | gdbarch_info_init (&info); |
| 391 | if (!gdbarch_update_p (info)) |
| 392 | internal_error (__FILE__, __LINE__, |
| 393 | _("Could not remove target-supplied description")); |
| 394 | } |
| 395 | |
| 396 | /* Return the global current target description. This should only be |
| 397 | used by gdbarch initialization code; most access should be through |
| 398 | an existing gdbarch. */ |
| 399 | |
| 400 | const struct target_desc * |
| 401 | target_current_description (void) |
| 402 | { |
| 403 | if (target_desc_fetched) |
| 404 | return current_target_desc; |
| 405 | |
| 406 | return NULL; |
| 407 | } |
| 408 | |
| 409 | /* Return non-zero if this target description is compatible |
| 410 | with the given BFD architecture. */ |
| 411 | |
| 412 | int |
| 413 | tdesc_compatible_p (const struct target_desc *target_desc, |
| 414 | const struct bfd_arch_info *arch) |
| 415 | { |
| 416 | const struct bfd_arch_info *compat; |
| 417 | int ix; |
| 418 | |
| 419 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); |
| 420 | ix++) |
| 421 | { |
| 422 | if (compat == arch |
| 423 | || arch->compatible (arch, compat) |
| 424 | || compat->compatible (compat, arch)) |
| 425 | return 1; |
| 426 | } |
| 427 | |
| 428 | return 0; |
| 429 | } |
| 430 | \f |
| 431 | |
| 432 | /* Direct accessors for target descriptions. */ |
| 433 | |
| 434 | /* Return the string value of a property named KEY, or NULL if the |
| 435 | property was not specified. */ |
| 436 | |
| 437 | const char * |
| 438 | tdesc_property (const struct target_desc *target_desc, const char *key) |
| 439 | { |
| 440 | struct property *prop; |
| 441 | int ix; |
| 442 | |
| 443 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); |
| 444 | ix++) |
| 445 | if (strcmp (prop->key, key) == 0) |
| 446 | return prop->value; |
| 447 | |
| 448 | return NULL; |
| 449 | } |
| 450 | |
| 451 | /* Return the BFD architecture associated with this target |
| 452 | description, or NULL if no architecture was specified. */ |
| 453 | |
| 454 | const struct bfd_arch_info * |
| 455 | tdesc_architecture (const struct target_desc *target_desc) |
| 456 | { |
| 457 | return target_desc->arch; |
| 458 | } |
| 459 | |
| 460 | /* Return the OSABI associated with this target description, or |
| 461 | GDB_OSABI_UNKNOWN if no osabi was specified. */ |
| 462 | |
| 463 | enum gdb_osabi |
| 464 | tdesc_osabi (const struct target_desc *target_desc) |
| 465 | { |
| 466 | return target_desc->osabi; |
| 467 | } |
| 468 | |
| 469 | \f |
| 470 | |
| 471 | /* Return 1 if this target description includes any registers. */ |
| 472 | |
| 473 | int |
| 474 | tdesc_has_registers (const struct target_desc *target_desc) |
| 475 | { |
| 476 | int ix; |
| 477 | struct tdesc_feature *feature; |
| 478 | |
| 479 | if (target_desc == NULL) |
| 480 | return 0; |
| 481 | |
| 482 | for (ix = 0; |
| 483 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); |
| 484 | ix++) |
| 485 | if (! VEC_empty (tdesc_reg_p, feature->registers)) |
| 486 | return 1; |
| 487 | |
| 488 | return 0; |
| 489 | } |
| 490 | |
| 491 | /* Return the feature with the given name, if present, or NULL if |
| 492 | the named feature is not found. */ |
| 493 | |
| 494 | const struct tdesc_feature * |
| 495 | tdesc_find_feature (const struct target_desc *target_desc, |
| 496 | const char *name) |
| 497 | { |
| 498 | int ix; |
| 499 | struct tdesc_feature *feature; |
| 500 | |
| 501 | for (ix = 0; |
| 502 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); |
| 503 | ix++) |
| 504 | if (strcmp (feature->name, name) == 0) |
| 505 | return feature; |
| 506 | |
| 507 | return NULL; |
| 508 | } |
| 509 | |
| 510 | /* Return the name of FEATURE. */ |
| 511 | |
| 512 | const char * |
| 513 | tdesc_feature_name (const struct tdesc_feature *feature) |
| 514 | { |
| 515 | return feature->name; |
| 516 | } |
| 517 | |
| 518 | /* Predefined types. */ |
| 519 | static struct tdesc_type tdesc_predefined_types[] = |
| 520 | { |
| 521 | { "bool", TDESC_TYPE_BOOL }, |
| 522 | { "int8", TDESC_TYPE_INT8 }, |
| 523 | { "int16", TDESC_TYPE_INT16 }, |
| 524 | { "int32", TDESC_TYPE_INT32 }, |
| 525 | { "int64", TDESC_TYPE_INT64 }, |
| 526 | { "int128", TDESC_TYPE_INT128 }, |
| 527 | { "uint8", TDESC_TYPE_UINT8 }, |
| 528 | { "uint16", TDESC_TYPE_UINT16 }, |
| 529 | { "uint32", TDESC_TYPE_UINT32 }, |
| 530 | { "uint64", TDESC_TYPE_UINT64 }, |
| 531 | { "uint128", TDESC_TYPE_UINT128 }, |
| 532 | { "code_ptr", TDESC_TYPE_CODE_PTR }, |
| 533 | { "data_ptr", TDESC_TYPE_DATA_PTR }, |
| 534 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, |
| 535 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, |
| 536 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
| 537 | { "i387_ext", TDESC_TYPE_I387_EXT } |
| 538 | }; |
| 539 | |
| 540 | /* Lookup a predefined type. */ |
| 541 | |
| 542 | static struct tdesc_type * |
| 543 | tdesc_predefined_type (enum tdesc_type_kind kind) |
| 544 | { |
| 545 | int ix; |
| 546 | struct tdesc_type *type; |
| 547 | |
| 548 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
| 549 | if (tdesc_predefined_types[ix].kind == kind) |
| 550 | return &tdesc_predefined_types[ix]; |
| 551 | |
| 552 | gdb_assert_not_reached ("bad predefined tdesc type"); |
| 553 | } |
| 554 | |
| 555 | /* Return the type associated with ID in the context of FEATURE, or |
| 556 | NULL if none. */ |
| 557 | |
| 558 | struct tdesc_type * |
| 559 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
| 560 | { |
| 561 | int ix; |
| 562 | struct tdesc_type *type; |
| 563 | |
| 564 | /* First try target-defined types. */ |
| 565 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
| 566 | if (strcmp (type->name, id) == 0) |
| 567 | return type; |
| 568 | |
| 569 | /* Next try the predefined types. */ |
| 570 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
| 571 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) |
| 572 | return &tdesc_predefined_types[ix]; |
| 573 | |
| 574 | return NULL; |
| 575 | } |
| 576 | |
| 577 | /* Lookup type associated with ID. */ |
| 578 | |
| 579 | struct type * |
| 580 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) |
| 581 | { |
| 582 | struct tdesc_arch_reg *reg; |
| 583 | struct tdesc_arch_data *data; |
| 584 | int i, num_regs; |
| 585 | |
| 586 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 587 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
| 588 | for (i = 0; i < num_regs; i++) |
| 589 | { |
| 590 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); |
| 591 | if (reg->reg |
| 592 | && reg->reg->tdesc_type |
| 593 | && reg->type |
| 594 | && strcmp (id, reg->reg->tdesc_type->name) == 0) |
| 595 | return reg->type; |
| 596 | } |
| 597 | |
| 598 | return NULL; |
| 599 | } |
| 600 | |
| 601 | /* Construct, if necessary, and return the GDB type implementing target |
| 602 | type TDESC_TYPE for architecture GDBARCH. */ |
| 603 | |
| 604 | static struct type * |
| 605 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) |
| 606 | { |
| 607 | struct type *type; |
| 608 | |
| 609 | switch (tdesc_type->kind) |
| 610 | { |
| 611 | /* Predefined types. */ |
| 612 | case TDESC_TYPE_BOOL: |
| 613 | return builtin_type (gdbarch)->builtin_bool; |
| 614 | |
| 615 | case TDESC_TYPE_INT8: |
| 616 | return builtin_type (gdbarch)->builtin_int8; |
| 617 | |
| 618 | case TDESC_TYPE_INT16: |
| 619 | return builtin_type (gdbarch)->builtin_int16; |
| 620 | |
| 621 | case TDESC_TYPE_INT32: |
| 622 | return builtin_type (gdbarch)->builtin_int32; |
| 623 | |
| 624 | case TDESC_TYPE_INT64: |
| 625 | return builtin_type (gdbarch)->builtin_int64; |
| 626 | |
| 627 | case TDESC_TYPE_INT128: |
| 628 | return builtin_type (gdbarch)->builtin_int128; |
| 629 | |
| 630 | case TDESC_TYPE_UINT8: |
| 631 | return builtin_type (gdbarch)->builtin_uint8; |
| 632 | |
| 633 | case TDESC_TYPE_UINT16: |
| 634 | return builtin_type (gdbarch)->builtin_uint16; |
| 635 | |
| 636 | case TDESC_TYPE_UINT32: |
| 637 | return builtin_type (gdbarch)->builtin_uint32; |
| 638 | |
| 639 | case TDESC_TYPE_UINT64: |
| 640 | return builtin_type (gdbarch)->builtin_uint64; |
| 641 | |
| 642 | case TDESC_TYPE_UINT128: |
| 643 | return builtin_type (gdbarch)->builtin_uint128; |
| 644 | |
| 645 | case TDESC_TYPE_CODE_PTR: |
| 646 | return builtin_type (gdbarch)->builtin_func_ptr; |
| 647 | |
| 648 | case TDESC_TYPE_DATA_PTR: |
| 649 | return builtin_type (gdbarch)->builtin_data_ptr; |
| 650 | |
| 651 | default: |
| 652 | break; |
| 653 | } |
| 654 | |
| 655 | type = tdesc_find_type (gdbarch, tdesc_type->name); |
| 656 | if (type) |
| 657 | return type; |
| 658 | |
| 659 | switch (tdesc_type->kind) |
| 660 | { |
| 661 | case TDESC_TYPE_IEEE_SINGLE: |
| 662 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
| 663 | floatformats_ieee_single); |
| 664 | |
| 665 | case TDESC_TYPE_IEEE_DOUBLE: |
| 666 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
| 667 | floatformats_ieee_double); |
| 668 | |
| 669 | case TDESC_TYPE_ARM_FPA_EXT: |
| 670 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
| 671 | floatformats_arm_ext); |
| 672 | |
| 673 | case TDESC_TYPE_I387_EXT: |
| 674 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", |
| 675 | floatformats_i387_ext); |
| 676 | |
| 677 | /* Types defined by a target feature. */ |
| 678 | case TDESC_TYPE_VECTOR: |
| 679 | { |
| 680 | struct type *type, *field_type; |
| 681 | |
| 682 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); |
| 683 | type = init_vector_type (field_type, tdesc_type->u.v.count); |
| 684 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
| 685 | |
| 686 | return type; |
| 687 | } |
| 688 | |
| 689 | case TDESC_TYPE_STRUCT: |
| 690 | { |
| 691 | struct type *type, *field_type; |
| 692 | struct tdesc_type_field *f; |
| 693 | int ix; |
| 694 | |
| 695 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 696 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
| 697 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
| 698 | |
| 699 | for (ix = 0; |
| 700 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
| 701 | ix++) |
| 702 | { |
| 703 | if (f->start != -1 && f->end != -1) |
| 704 | { |
| 705 | /* Bitfield. */ |
| 706 | struct field *fld; |
| 707 | struct type *field_type; |
| 708 | int bitsize, total_size; |
| 709 | |
| 710 | /* This invariant should be preserved while creating types. */ |
| 711 | gdb_assert (tdesc_type->u.u.size != 0); |
| 712 | if (f->type != NULL) |
| 713 | field_type = tdesc_gdb_type (gdbarch, f->type); |
| 714 | else if (tdesc_type->u.u.size > 4) |
| 715 | field_type = builtin_type (gdbarch)->builtin_uint64; |
| 716 | else |
| 717 | field_type = builtin_type (gdbarch)->builtin_uint32; |
| 718 | |
| 719 | fld = append_composite_type_field_raw (type, xstrdup (f->name), |
| 720 | field_type); |
| 721 | |
| 722 | /* For little-endian, BITPOS counts from the LSB of |
| 723 | the structure and marks the LSB of the field. For |
| 724 | big-endian, BITPOS counts from the MSB of the |
| 725 | structure and marks the MSB of the field. Either |
| 726 | way, it is the number of bits to the "left" of the |
| 727 | field. To calculate this in big-endian, we need |
| 728 | the total size of the structure. */ |
| 729 | bitsize = f->end - f->start + 1; |
| 730 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; |
| 731 | if (gdbarch_bits_big_endian (gdbarch)) |
| 732 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
| 733 | else |
| 734 | SET_FIELD_BITPOS (fld[0], f->start); |
| 735 | FIELD_BITSIZE (fld[0]) = bitsize; |
| 736 | } |
| 737 | else |
| 738 | { |
| 739 | gdb_assert (f->start == -1 && f->end == -1); |
| 740 | field_type = tdesc_gdb_type (gdbarch, f->type); |
| 741 | append_composite_type_field (type, xstrdup (f->name), |
| 742 | field_type); |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | if (tdesc_type->u.u.size != 0) |
| 747 | TYPE_LENGTH (type) = tdesc_type->u.u.size; |
| 748 | return type; |
| 749 | } |
| 750 | |
| 751 | case TDESC_TYPE_UNION: |
| 752 | { |
| 753 | struct type *type, *field_type; |
| 754 | struct tdesc_type_field *f; |
| 755 | int ix; |
| 756 | |
| 757 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 758 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
| 759 | |
| 760 | for (ix = 0; |
| 761 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
| 762 | ix++) |
| 763 | { |
| 764 | field_type = tdesc_gdb_type (gdbarch, f->type); |
| 765 | append_composite_type_field (type, xstrdup (f->name), field_type); |
| 766 | |
| 767 | /* If any of the children of a union are vectors, flag the |
| 768 | union as a vector also. This allows e.g. a union of two |
| 769 | vector types to show up automatically in "info vector". */ |
| 770 | if (TYPE_VECTOR (field_type)) |
| 771 | TYPE_VECTOR (type) = 1; |
| 772 | } |
| 773 | return type; |
| 774 | } |
| 775 | |
| 776 | case TDESC_TYPE_FLAGS: |
| 777 | { |
| 778 | struct tdesc_type_field *f; |
| 779 | int ix; |
| 780 | |
| 781 | type = arch_flags_type (gdbarch, tdesc_type->name, |
| 782 | tdesc_type->u.u.size); |
| 783 | for (ix = 0; |
| 784 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
| 785 | ix++) |
| 786 | { |
| 787 | struct type *field_type; |
| 788 | int bitsize = f->end - f->start + 1; |
| 789 | |
| 790 | gdb_assert (f->type != NULL); |
| 791 | field_type = tdesc_gdb_type (gdbarch, f->type); |
| 792 | append_flags_type_field (type, f->start, bitsize, |
| 793 | field_type, f->name); |
| 794 | } |
| 795 | |
| 796 | return type; |
| 797 | } |
| 798 | |
| 799 | case TDESC_TYPE_ENUM: |
| 800 | { |
| 801 | struct tdesc_type_field *f; |
| 802 | int ix; |
| 803 | |
| 804 | type = arch_type (gdbarch, TYPE_CODE_ENUM, |
| 805 | tdesc_type->u.u.size, tdesc_type->name); |
| 806 | TYPE_UNSIGNED (type) = 1; |
| 807 | for (ix = 0; |
| 808 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
| 809 | ix++) |
| 810 | { |
| 811 | struct field *fld |
| 812 | = append_composite_type_field_raw (type, xstrdup (f->name), |
| 813 | NULL); |
| 814 | |
| 815 | SET_FIELD_BITPOS (fld[0], f->start); |
| 816 | } |
| 817 | |
| 818 | return type; |
| 819 | } |
| 820 | } |
| 821 | |
| 822 | internal_error (__FILE__, __LINE__, |
| 823 | "Type \"%s\" has an unknown kind %d", |
| 824 | tdesc_type->name, tdesc_type->kind); |
| 825 | } |
| 826 | \f |
| 827 | |
| 828 | /* Support for registers from target descriptions. */ |
| 829 | |
| 830 | /* Construct the per-gdbarch data. */ |
| 831 | |
| 832 | static void * |
| 833 | tdesc_data_init (struct obstack *obstack) |
| 834 | { |
| 835 | struct tdesc_arch_data *data; |
| 836 | |
| 837 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); |
| 838 | return data; |
| 839 | } |
| 840 | |
| 841 | /* Similar, but for the temporary copy used during architecture |
| 842 | initialization. */ |
| 843 | |
| 844 | struct tdesc_arch_data * |
| 845 | tdesc_data_alloc (void) |
| 846 | { |
| 847 | return XCNEW (struct tdesc_arch_data); |
| 848 | } |
| 849 | |
| 850 | /* Free something allocated by tdesc_data_alloc, if it is not going |
| 851 | to be used (for instance if it was unsuitable for the |
| 852 | architecture). */ |
| 853 | |
| 854 | void |
| 855 | tdesc_data_cleanup (void *data_untyped) |
| 856 | { |
| 857 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
| 858 | |
| 859 | VEC_free (tdesc_arch_reg, data->arch_regs); |
| 860 | xfree (data); |
| 861 | } |
| 862 | |
| 863 | /* Search FEATURE for a register named NAME. */ |
| 864 | |
| 865 | static struct tdesc_reg * |
| 866 | tdesc_find_register_early (const struct tdesc_feature *feature, |
| 867 | const char *name) |
| 868 | { |
| 869 | int ixr; |
| 870 | struct tdesc_reg *reg; |
| 871 | |
| 872 | for (ixr = 0; |
| 873 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); |
| 874 | ixr++) |
| 875 | if (strcasecmp (reg->name, name) == 0) |
| 876 | return reg; |
| 877 | |
| 878 | return NULL; |
| 879 | } |
| 880 | |
| 881 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ |
| 882 | |
| 883 | int |
| 884 | tdesc_numbered_register (const struct tdesc_feature *feature, |
| 885 | struct tdesc_arch_data *data, |
| 886 | int regno, const char *name) |
| 887 | { |
| 888 | struct tdesc_arch_reg arch_reg = { 0 }; |
| 889 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
| 890 | |
| 891 | if (reg == NULL) |
| 892 | return 0; |
| 893 | |
| 894 | /* Make sure the vector includes a REGNO'th element. */ |
| 895 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
| 896 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); |
| 897 | |
| 898 | arch_reg.reg = reg; |
| 899 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); |
| 900 | return 1; |
| 901 | } |
| 902 | |
| 903 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
| 904 | register number to it. */ |
| 905 | |
| 906 | int |
| 907 | tdesc_unnumbered_register (const struct tdesc_feature *feature, |
| 908 | const char *name) |
| 909 | { |
| 910 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
| 911 | |
| 912 | if (reg == NULL) |
| 913 | return 0; |
| 914 | |
| 915 | return 1; |
| 916 | } |
| 917 | |
| 918 | /* Search FEATURE for a register whose name is in NAMES and assign |
| 919 | REGNO to it. */ |
| 920 | |
| 921 | int |
| 922 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, |
| 923 | struct tdesc_arch_data *data, |
| 924 | int regno, const char *const names[]) |
| 925 | { |
| 926 | int i; |
| 927 | |
| 928 | for (i = 0; names[i] != NULL; i++) |
| 929 | if (tdesc_numbered_register (feature, data, regno, names[i])) |
| 930 | return 1; |
| 931 | |
| 932 | return 0; |
| 933 | } |
| 934 | |
| 935 | /* Search FEATURE for a register named NAME, and return its size in |
| 936 | bits. The register must exist. */ |
| 937 | |
| 938 | int |
| 939 | tdesc_register_size (const struct tdesc_feature *feature, |
| 940 | const char *name) |
| 941 | { |
| 942 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
| 943 | |
| 944 | gdb_assert (reg != NULL); |
| 945 | return reg->bitsize; |
| 946 | } |
| 947 | |
| 948 | /* Look up a register by its GDB internal register number. */ |
| 949 | |
| 950 | static struct tdesc_arch_reg * |
| 951 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) |
| 952 | { |
| 953 | struct tdesc_arch_data *data; |
| 954 | |
| 955 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 956 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
| 957 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); |
| 958 | else |
| 959 | return NULL; |
| 960 | } |
| 961 | |
| 962 | static struct tdesc_reg * |
| 963 | tdesc_find_register (struct gdbarch *gdbarch, int regno) |
| 964 | { |
| 965 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); |
| 966 | |
| 967 | return reg? reg->reg : NULL; |
| 968 | } |
| 969 | |
| 970 | /* Return the name of register REGNO, from the target description or |
| 971 | from an architecture-provided pseudo_register_name method. */ |
| 972 | |
| 973 | const char * |
| 974 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
| 975 | { |
| 976 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
| 977 | int num_regs = gdbarch_num_regs (gdbarch); |
| 978 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); |
| 979 | |
| 980 | if (reg != NULL) |
| 981 | return reg->name; |
| 982 | |
| 983 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) |
| 984 | { |
| 985 | struct tdesc_arch_data *data |
| 986 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 987 | |
| 988 | gdb_assert (data->pseudo_register_name != NULL); |
| 989 | return data->pseudo_register_name (gdbarch, regno); |
| 990 | } |
| 991 | |
| 992 | return ""; |
| 993 | } |
| 994 | |
| 995 | struct type * |
| 996 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
| 997 | { |
| 998 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
| 999 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; |
| 1000 | int num_regs = gdbarch_num_regs (gdbarch); |
| 1001 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); |
| 1002 | |
| 1003 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) |
| 1004 | { |
| 1005 | struct tdesc_arch_data *data |
| 1006 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 1007 | |
| 1008 | gdb_assert (data->pseudo_register_type != NULL); |
| 1009 | return data->pseudo_register_type (gdbarch, regno); |
| 1010 | } |
| 1011 | |
| 1012 | if (reg == NULL) |
| 1013 | /* Return "int0_t", since "void" has a misleading size of one. */ |
| 1014 | return builtin_type (gdbarch)->builtin_int0; |
| 1015 | |
| 1016 | if (arch_reg->type == NULL) |
| 1017 | { |
| 1018 | /* First check for a predefined or target defined type. */ |
| 1019 | if (reg->tdesc_type) |
| 1020 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); |
| 1021 | |
| 1022 | /* Next try size-sensitive type shortcuts. */ |
| 1023 | else if (strcmp (reg->type, "float") == 0) |
| 1024 | { |
| 1025 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) |
| 1026 | arch_reg->type = builtin_type (gdbarch)->builtin_float; |
| 1027 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) |
| 1028 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
| 1029 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) |
| 1030 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; |
| 1031 | else |
| 1032 | { |
| 1033 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), |
| 1034 | reg->name, reg->bitsize); |
| 1035 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
| 1036 | } |
| 1037 | } |
| 1038 | else if (strcmp (reg->type, "int") == 0) |
| 1039 | { |
| 1040 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) |
| 1041 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
| 1042 | else if (reg->bitsize == TARGET_CHAR_BIT) |
| 1043 | arch_reg->type = builtin_type (gdbarch)->builtin_char; |
| 1044 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) |
| 1045 | arch_reg->type = builtin_type (gdbarch)->builtin_short; |
| 1046 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) |
| 1047 | arch_reg->type = builtin_type (gdbarch)->builtin_int; |
| 1048 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) |
| 1049 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; |
| 1050 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) |
| 1051 | /* A bit desperate by this point... */ |
| 1052 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
| 1053 | else |
| 1054 | { |
| 1055 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), |
| 1056 | reg->name, reg->bitsize); |
| 1057 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | if (arch_reg->type == NULL) |
| 1062 | internal_error (__FILE__, __LINE__, |
| 1063 | "Register \"%s\" has an unknown type \"%s\"", |
| 1064 | reg->name, reg->type); |
| 1065 | } |
| 1066 | |
| 1067 | return arch_reg->type; |
| 1068 | } |
| 1069 | |
| 1070 | static int |
| 1071 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) |
| 1072 | { |
| 1073 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
| 1074 | |
| 1075 | if (reg != NULL) |
| 1076 | return reg->target_regnum; |
| 1077 | else |
| 1078 | return -1; |
| 1079 | } |
| 1080 | |
| 1081 | /* Check whether REGNUM is a member of REGGROUP. Registers from the |
| 1082 | target description may be classified as general, float, or vector. |
| 1083 | Unlike a gdbarch register_reggroup_p method, this function will |
| 1084 | return -1 if it does not know; the caller should handle registers |
| 1085 | with no specified group. |
| 1086 | |
| 1087 | Arbitrary strings (other than "general", "float", and "vector") |
| 1088 | from the description are not used; they cause the register to be |
| 1089 | displayed in "info all-registers" but excluded from "info |
| 1090 | registers" et al. The names of containing features are also not |
| 1091 | used. This might be extended to display registers in some more |
| 1092 | useful groupings. |
| 1093 | |
| 1094 | The save-restore flag is also implemented here. */ |
| 1095 | |
| 1096 | int |
| 1097 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, |
| 1098 | struct reggroup *reggroup) |
| 1099 | { |
| 1100 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
| 1101 | |
| 1102 | if (reg != NULL && reg->group != NULL) |
| 1103 | { |
| 1104 | int general_p = 0, float_p = 0, vector_p = 0; |
| 1105 | |
| 1106 | if (strcmp (reg->group, "general") == 0) |
| 1107 | general_p = 1; |
| 1108 | else if (strcmp (reg->group, "float") == 0) |
| 1109 | float_p = 1; |
| 1110 | else if (strcmp (reg->group, "vector") == 0) |
| 1111 | vector_p = 1; |
| 1112 | |
| 1113 | if (reggroup == float_reggroup) |
| 1114 | return float_p; |
| 1115 | |
| 1116 | if (reggroup == vector_reggroup) |
| 1117 | return vector_p; |
| 1118 | |
| 1119 | if (reggroup == general_reggroup) |
| 1120 | return general_p; |
| 1121 | } |
| 1122 | |
| 1123 | if (reg != NULL |
| 1124 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) |
| 1125 | return reg->save_restore; |
| 1126 | |
| 1127 | return -1; |
| 1128 | } |
| 1129 | |
| 1130 | /* Check whether REGNUM is a member of REGGROUP. Registers with no |
| 1131 | group specified go to the default reggroup function and are handled |
| 1132 | by type. */ |
| 1133 | |
| 1134 | static int |
| 1135 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, |
| 1136 | struct reggroup *reggroup) |
| 1137 | { |
| 1138 | int num_regs = gdbarch_num_regs (gdbarch); |
| 1139 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); |
| 1140 | int ret; |
| 1141 | |
| 1142 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) |
| 1143 | { |
| 1144 | struct tdesc_arch_data *data |
| 1145 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 1146 | |
| 1147 | if (data->pseudo_register_reggroup_p != NULL) |
| 1148 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); |
| 1149 | /* Otherwise fall through to the default reggroup_p. */ |
| 1150 | } |
| 1151 | |
| 1152 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); |
| 1153 | if (ret != -1) |
| 1154 | return ret; |
| 1155 | |
| 1156 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
| 1157 | } |
| 1158 | |
| 1159 | /* Record architecture-specific functions to call for pseudo-register |
| 1160 | support. */ |
| 1161 | |
| 1162 | void |
| 1163 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, |
| 1164 | gdbarch_register_name_ftype *pseudo_name) |
| 1165 | { |
| 1166 | struct tdesc_arch_data *data |
| 1167 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 1168 | |
| 1169 | data->pseudo_register_name = pseudo_name; |
| 1170 | } |
| 1171 | |
| 1172 | void |
| 1173 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, |
| 1174 | gdbarch_register_type_ftype *pseudo_type) |
| 1175 | { |
| 1176 | struct tdesc_arch_data *data |
| 1177 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 1178 | |
| 1179 | data->pseudo_register_type = pseudo_type; |
| 1180 | } |
| 1181 | |
| 1182 | void |
| 1183 | set_tdesc_pseudo_register_reggroup_p |
| 1184 | (struct gdbarch *gdbarch, |
| 1185 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) |
| 1186 | { |
| 1187 | struct tdesc_arch_data *data |
| 1188 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 1189 | |
| 1190 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; |
| 1191 | } |
| 1192 | |
| 1193 | /* Update GDBARCH to use the target description for registers. */ |
| 1194 | |
| 1195 | void |
| 1196 | tdesc_use_registers (struct gdbarch *gdbarch, |
| 1197 | const struct target_desc *target_desc, |
| 1198 | struct tdesc_arch_data *early_data) |
| 1199 | { |
| 1200 | int num_regs = gdbarch_num_regs (gdbarch); |
| 1201 | int ixf, ixr; |
| 1202 | struct tdesc_feature *feature; |
| 1203 | struct tdesc_reg *reg; |
| 1204 | struct tdesc_arch_data *data; |
| 1205 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
| 1206 | htab_t reg_hash; |
| 1207 | |
| 1208 | /* We can't use the description for registers if it doesn't describe |
| 1209 | any. This function should only be called after validating |
| 1210 | registers, so the caller should know that registers are |
| 1211 | included. */ |
| 1212 | gdb_assert (tdesc_has_registers (target_desc)); |
| 1213 | |
| 1214 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
| 1215 | data->arch_regs = early_data->arch_regs; |
| 1216 | xfree (early_data); |
| 1217 | |
| 1218 | /* Build up a set of all registers, so that we can assign register |
| 1219 | numbers where needed. The hash table expands as necessary, so |
| 1220 | the initial size is arbitrary. */ |
| 1221 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); |
| 1222 | for (ixf = 0; |
| 1223 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); |
| 1224 | ixf++) |
| 1225 | for (ixr = 0; |
| 1226 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); |
| 1227 | ixr++) |
| 1228 | { |
| 1229 | void **slot = htab_find_slot (reg_hash, reg, INSERT); |
| 1230 | |
| 1231 | *slot = reg; |
| 1232 | } |
| 1233 | |
| 1234 | /* Remove any registers which were assigned numbers by the |
| 1235 | architecture. */ |
| 1236 | for (ixr = 0; |
| 1237 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); |
| 1238 | ixr++) |
| 1239 | if (arch_reg->reg) |
| 1240 | htab_remove_elt (reg_hash, arch_reg->reg); |
| 1241 | |
| 1242 | /* Assign numbers to the remaining registers and add them to the |
| 1243 | list of registers. The new numbers are always above gdbarch_num_regs. |
| 1244 | Iterate over the features, not the hash table, so that the order |
| 1245 | matches that in the target description. */ |
| 1246 | |
| 1247 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
| 1248 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) |
| 1249 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); |
| 1250 | for (ixf = 0; |
| 1251 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); |
| 1252 | ixf++) |
| 1253 | for (ixr = 0; |
| 1254 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); |
| 1255 | ixr++) |
| 1256 | if (htab_find (reg_hash, reg) != NULL) |
| 1257 | { |
| 1258 | new_arch_reg.reg = reg; |
| 1259 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); |
| 1260 | num_regs++; |
| 1261 | } |
| 1262 | |
| 1263 | htab_delete (reg_hash); |
| 1264 | |
| 1265 | /* Update the architecture. */ |
| 1266 | set_gdbarch_num_regs (gdbarch, num_regs); |
| 1267 | set_gdbarch_register_name (gdbarch, tdesc_register_name); |
| 1268 | set_gdbarch_register_type (gdbarch, tdesc_register_type); |
| 1269 | set_gdbarch_remote_register_number (gdbarch, |
| 1270 | tdesc_remote_register_number); |
| 1271 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); |
| 1272 | } |
| 1273 | \f |
| 1274 | |
| 1275 | /* Methods for constructing a target description. */ |
| 1276 | |
| 1277 | static void |
| 1278 | tdesc_free_reg (struct tdesc_reg *reg) |
| 1279 | { |
| 1280 | xfree (reg->name); |
| 1281 | xfree (reg->type); |
| 1282 | xfree (reg->group); |
| 1283 | xfree (reg); |
| 1284 | } |
| 1285 | |
| 1286 | void |
| 1287 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, |
| 1288 | int regnum, int save_restore, const char *group, |
| 1289 | int bitsize, const char *type) |
| 1290 | { |
| 1291 | struct tdesc_reg *reg = XCNEW (struct tdesc_reg); |
| 1292 | |
| 1293 | reg->name = xstrdup (name); |
| 1294 | reg->target_regnum = regnum; |
| 1295 | reg->save_restore = save_restore; |
| 1296 | reg->group = group ? xstrdup (group) : NULL; |
| 1297 | reg->bitsize = bitsize; |
| 1298 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
| 1299 | |
| 1300 | /* If the register's type is target-defined, look it up now. We may not |
| 1301 | have easy access to the containing feature when we want it later. */ |
| 1302 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
| 1303 | |
| 1304 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); |
| 1305 | } |
| 1306 | |
| 1307 | /* Subroutine of tdesc_free_feature to simplify it. |
| 1308 | Note: We do not want to free any referenced types here (e.g., types of |
| 1309 | fields of a struct). All types of a feature are recorded in |
| 1310 | feature->types and are freed that way. */ |
| 1311 | |
| 1312 | static void |
| 1313 | tdesc_free_type (struct tdesc_type *type) |
| 1314 | { |
| 1315 | switch (type->kind) |
| 1316 | { |
| 1317 | case TDESC_TYPE_STRUCT: |
| 1318 | case TDESC_TYPE_UNION: |
| 1319 | case TDESC_TYPE_FLAGS: |
| 1320 | case TDESC_TYPE_ENUM: |
| 1321 | { |
| 1322 | struct tdesc_type_field *f; |
| 1323 | int ix; |
| 1324 | |
| 1325 | for (ix = 0; |
| 1326 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); |
| 1327 | ix++) |
| 1328 | xfree (f->name); |
| 1329 | |
| 1330 | VEC_free (tdesc_type_field, type->u.u.fields); |
| 1331 | } |
| 1332 | break; |
| 1333 | |
| 1334 | default: |
| 1335 | break; |
| 1336 | } |
| 1337 | |
| 1338 | xfree (type->name); |
| 1339 | xfree (type); |
| 1340 | } |
| 1341 | |
| 1342 | struct tdesc_type * |
| 1343 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, |
| 1344 | struct tdesc_type *field_type, int count) |
| 1345 | { |
| 1346 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
| 1347 | |
| 1348 | type->name = xstrdup (name); |
| 1349 | type->kind = TDESC_TYPE_VECTOR; |
| 1350 | type->u.v.type = field_type; |
| 1351 | type->u.v.count = count; |
| 1352 | |
| 1353 | VEC_safe_push (tdesc_type_p, feature->types, type); |
| 1354 | return type; |
| 1355 | } |
| 1356 | |
| 1357 | struct tdesc_type * |
| 1358 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) |
| 1359 | { |
| 1360 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
| 1361 | |
| 1362 | type->name = xstrdup (name); |
| 1363 | type->kind = TDESC_TYPE_STRUCT; |
| 1364 | |
| 1365 | VEC_safe_push (tdesc_type_p, feature->types, type); |
| 1366 | return type; |
| 1367 | } |
| 1368 | |
| 1369 | /* Set the total length of TYPE. Structs which contain bitfields may |
| 1370 | omit the reserved bits, so the end of the last field may not |
| 1371 | suffice. */ |
| 1372 | |
| 1373 | void |
| 1374 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
| 1375 | { |
| 1376 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
| 1377 | gdb_assert (size > 0); |
| 1378 | type->u.u.size = size; |
| 1379 | } |
| 1380 | |
| 1381 | struct tdesc_type * |
| 1382 | tdesc_create_union (struct tdesc_feature *feature, const char *name) |
| 1383 | { |
| 1384 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
| 1385 | |
| 1386 | type->name = xstrdup (name); |
| 1387 | type->kind = TDESC_TYPE_UNION; |
| 1388 | |
| 1389 | VEC_safe_push (tdesc_type_p, feature->types, type); |
| 1390 | return type; |
| 1391 | } |
| 1392 | |
| 1393 | struct tdesc_type * |
| 1394 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, |
| 1395 | int size) |
| 1396 | { |
| 1397 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
| 1398 | |
| 1399 | gdb_assert (size > 0); |
| 1400 | |
| 1401 | type->name = xstrdup (name); |
| 1402 | type->kind = TDESC_TYPE_FLAGS; |
| 1403 | type->u.u.size = size; |
| 1404 | |
| 1405 | VEC_safe_push (tdesc_type_p, feature->types, type); |
| 1406 | return type; |
| 1407 | } |
| 1408 | |
| 1409 | struct tdesc_type * |
| 1410 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, |
| 1411 | int size) |
| 1412 | { |
| 1413 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
| 1414 | |
| 1415 | gdb_assert (size > 0); |
| 1416 | |
| 1417 | type->name = xstrdup (name); |
| 1418 | type->kind = TDESC_TYPE_ENUM; |
| 1419 | type->u.u.size = size; |
| 1420 | |
| 1421 | VEC_safe_push (tdesc_type_p, feature->types, type); |
| 1422 | return type; |
| 1423 | } |
| 1424 | |
| 1425 | /* Add a new field to TYPE. */ |
| 1426 | |
| 1427 | void |
| 1428 | tdesc_add_field (struct tdesc_type *type, const char *field_name, |
| 1429 | struct tdesc_type *field_type) |
| 1430 | { |
| 1431 | struct tdesc_type_field f = { 0 }; |
| 1432 | |
| 1433 | gdb_assert (type->kind == TDESC_TYPE_UNION |
| 1434 | || type->kind == TDESC_TYPE_STRUCT); |
| 1435 | |
| 1436 | f.name = xstrdup (field_name); |
| 1437 | f.type = field_type; |
| 1438 | /* Initialize these values so we know this is not a bit-field |
| 1439 | when we print-c-tdesc. */ |
| 1440 | f.start = -1; |
| 1441 | f.end = -1; |
| 1442 | |
| 1443 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
| 1444 | } |
| 1445 | |
| 1446 | /* Add a new typed bitfield to TYPE. */ |
| 1447 | |
| 1448 | void |
| 1449 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
| 1450 | int start, int end, struct tdesc_type *field_type) |
| 1451 | { |
| 1452 | struct tdesc_type_field f = { 0 }; |
| 1453 | |
| 1454 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
| 1455 | || type->kind == TDESC_TYPE_FLAGS); |
| 1456 | gdb_assert (start >= 0 && end >= start); |
| 1457 | |
| 1458 | f.name = xstrdup (field_name); |
| 1459 | f.start = start; |
| 1460 | f.end = end; |
| 1461 | f.type = field_type; |
| 1462 | |
| 1463 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
| 1464 | } |
| 1465 | |
| 1466 | /* Add a new untyped bitfield to TYPE. |
| 1467 | Untyped bitfields become either uint32 or uint64 depending on the size |
| 1468 | of the underlying type. */ |
| 1469 | |
| 1470 | void |
| 1471 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, |
| 1472 | int start, int end) |
| 1473 | { |
| 1474 | struct tdesc_type *field_type; |
| 1475 | |
| 1476 | gdb_assert (start >= 0 && end >= start); |
| 1477 | |
| 1478 | if (type->u.u.size > 4) |
| 1479 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); |
| 1480 | else |
| 1481 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); |
| 1482 | |
| 1483 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); |
| 1484 | } |
| 1485 | |
| 1486 | /* A flag is just a typed(bool) single-bit bitfield. |
| 1487 | This function is kept to minimize changes in generated files. */ |
| 1488 | |
| 1489 | void |
| 1490 | tdesc_add_flag (struct tdesc_type *type, int start, |
| 1491 | const char *flag_name) |
| 1492 | { |
| 1493 | struct tdesc_type_field f = { 0 }; |
| 1494 | |
| 1495 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
| 1496 | || type->kind == TDESC_TYPE_STRUCT); |
| 1497 | |
| 1498 | f.name = xstrdup (flag_name); |
| 1499 | f.start = start; |
| 1500 | f.end = start; |
| 1501 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); |
| 1502 | |
| 1503 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
| 1504 | } |
| 1505 | |
| 1506 | void |
| 1507 | tdesc_add_enum_value (struct tdesc_type *type, int value, |
| 1508 | const char *name) |
| 1509 | { |
| 1510 | struct tdesc_type_field f = { 0 }; |
| 1511 | |
| 1512 | gdb_assert (type->kind == TDESC_TYPE_ENUM); |
| 1513 | |
| 1514 | f.name = xstrdup (name); |
| 1515 | f.start = value; |
| 1516 | f.end = -1; |
| 1517 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); |
| 1518 | |
| 1519 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
| 1520 | } |
| 1521 | |
| 1522 | static void |
| 1523 | tdesc_free_feature (struct tdesc_feature *feature) |
| 1524 | { |
| 1525 | struct tdesc_reg *reg; |
| 1526 | struct tdesc_type *type; |
| 1527 | int ix; |
| 1528 | |
| 1529 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) |
| 1530 | tdesc_free_reg (reg); |
| 1531 | VEC_free (tdesc_reg_p, feature->registers); |
| 1532 | |
| 1533 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
| 1534 | tdesc_free_type (type); |
| 1535 | VEC_free (tdesc_type_p, feature->types); |
| 1536 | |
| 1537 | xfree (feature->name); |
| 1538 | xfree (feature); |
| 1539 | } |
| 1540 | |
| 1541 | struct tdesc_feature * |
| 1542 | tdesc_create_feature (struct target_desc *tdesc, const char *name) |
| 1543 | { |
| 1544 | struct tdesc_feature *new_feature = XCNEW (struct tdesc_feature); |
| 1545 | |
| 1546 | new_feature->name = xstrdup (name); |
| 1547 | |
| 1548 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); |
| 1549 | return new_feature; |
| 1550 | } |
| 1551 | |
| 1552 | struct target_desc * |
| 1553 | allocate_target_description (void) |
| 1554 | { |
| 1555 | return XCNEW (struct target_desc); |
| 1556 | } |
| 1557 | |
| 1558 | static void |
| 1559 | free_target_description (void *arg) |
| 1560 | { |
| 1561 | struct target_desc *target_desc = (struct target_desc *) arg; |
| 1562 | struct tdesc_feature *feature; |
| 1563 | struct property *prop; |
| 1564 | int ix; |
| 1565 | |
| 1566 | for (ix = 0; |
| 1567 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); |
| 1568 | ix++) |
| 1569 | tdesc_free_feature (feature); |
| 1570 | VEC_free (tdesc_feature_p, target_desc->features); |
| 1571 | |
| 1572 | for (ix = 0; |
| 1573 | VEC_iterate (property_s, target_desc->properties, ix, prop); |
| 1574 | ix++) |
| 1575 | { |
| 1576 | xfree (prop->key); |
| 1577 | xfree (prop->value); |
| 1578 | } |
| 1579 | VEC_free (property_s, target_desc->properties); |
| 1580 | |
| 1581 | VEC_free (arch_p, target_desc->compatible); |
| 1582 | |
| 1583 | xfree (target_desc); |
| 1584 | } |
| 1585 | |
| 1586 | struct cleanup * |
| 1587 | make_cleanup_free_target_description (struct target_desc *target_desc) |
| 1588 | { |
| 1589 | return make_cleanup (free_target_description, target_desc); |
| 1590 | } |
| 1591 | |
| 1592 | void |
| 1593 | tdesc_add_compatible (struct target_desc *target_desc, |
| 1594 | const struct bfd_arch_info *compatible) |
| 1595 | { |
| 1596 | const struct bfd_arch_info *compat; |
| 1597 | int ix; |
| 1598 | |
| 1599 | /* If this instance of GDB is compiled without BFD support for the |
| 1600 | compatible architecture, simply ignore it -- we would not be able |
| 1601 | to handle it anyway. */ |
| 1602 | if (compatible == NULL) |
| 1603 | return; |
| 1604 | |
| 1605 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); |
| 1606 | ix++) |
| 1607 | if (compat == compatible) |
| 1608 | internal_error (__FILE__, __LINE__, |
| 1609 | _("Attempted to add duplicate " |
| 1610 | "compatible architecture \"%s\""), |
| 1611 | compatible->printable_name); |
| 1612 | |
| 1613 | VEC_safe_push (arch_p, target_desc->compatible, compatible); |
| 1614 | } |
| 1615 | |
| 1616 | void |
| 1617 | set_tdesc_property (struct target_desc *target_desc, |
| 1618 | const char *key, const char *value) |
| 1619 | { |
| 1620 | struct property *prop, new_prop; |
| 1621 | int ix; |
| 1622 | |
| 1623 | gdb_assert (key != NULL && value != NULL); |
| 1624 | |
| 1625 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); |
| 1626 | ix++) |
| 1627 | if (strcmp (prop->key, key) == 0) |
| 1628 | internal_error (__FILE__, __LINE__, |
| 1629 | _("Attempted to add duplicate property \"%s\""), key); |
| 1630 | |
| 1631 | new_prop.key = xstrdup (key); |
| 1632 | new_prop.value = xstrdup (value); |
| 1633 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
| 1634 | } |
| 1635 | |
| 1636 | void |
| 1637 | set_tdesc_architecture (struct target_desc *target_desc, |
| 1638 | const struct bfd_arch_info *arch) |
| 1639 | { |
| 1640 | target_desc->arch = arch; |
| 1641 | } |
| 1642 | |
| 1643 | void |
| 1644 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) |
| 1645 | { |
| 1646 | target_desc->osabi = osabi; |
| 1647 | } |
| 1648 | \f |
| 1649 | |
| 1650 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; |
| 1651 | static struct cmd_list_element *tdesc_unset_cmdlist; |
| 1652 | |
| 1653 | /* Helper functions for the CLI commands. */ |
| 1654 | |
| 1655 | static void |
| 1656 | set_tdesc_cmd (char *args, int from_tty) |
| 1657 | { |
| 1658 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
| 1659 | } |
| 1660 | |
| 1661 | static void |
| 1662 | show_tdesc_cmd (char *args, int from_tty) |
| 1663 | { |
| 1664 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); |
| 1665 | } |
| 1666 | |
| 1667 | static void |
| 1668 | unset_tdesc_cmd (char *args, int from_tty) |
| 1669 | { |
| 1670 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
| 1671 | } |
| 1672 | |
| 1673 | static void |
| 1674 | set_tdesc_filename_cmd (char *args, int from_tty, |
| 1675 | struct cmd_list_element *c) |
| 1676 | { |
| 1677 | xfree (target_description_filename); |
| 1678 | target_description_filename = xstrdup (tdesc_filename_cmd_string); |
| 1679 | |
| 1680 | target_clear_description (); |
| 1681 | target_find_description (); |
| 1682 | } |
| 1683 | |
| 1684 | static void |
| 1685 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, |
| 1686 | struct cmd_list_element *c, |
| 1687 | const char *value) |
| 1688 | { |
| 1689 | value = target_description_filename; |
| 1690 | |
| 1691 | if (value != NULL && *value != '\0') |
| 1692 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
| 1693 | value); |
| 1694 | else |
| 1695 | printf_filtered (_("The target description will be " |
| 1696 | "read from the target.\n")); |
| 1697 | } |
| 1698 | |
| 1699 | static void |
| 1700 | unset_tdesc_filename_cmd (char *args, int from_tty) |
| 1701 | { |
| 1702 | xfree (target_description_filename); |
| 1703 | target_description_filename = NULL; |
| 1704 | target_clear_description (); |
| 1705 | target_find_description (); |
| 1706 | } |
| 1707 | |
| 1708 | static void |
| 1709 | maint_print_c_tdesc_cmd (char *args, int from_tty) |
| 1710 | { |
| 1711 | const struct target_desc *tdesc; |
| 1712 | const struct bfd_arch_info *compatible; |
| 1713 | const char *filename, *inp; |
| 1714 | char *function, *outp; |
| 1715 | struct property *prop; |
| 1716 | struct tdesc_feature *feature; |
| 1717 | struct tdesc_reg *reg; |
| 1718 | struct tdesc_type *type; |
| 1719 | struct tdesc_type_field *f; |
| 1720 | int ix, ix2, ix3; |
| 1721 | int printed_field_type = 0; |
| 1722 | |
| 1723 | /* Use the global target-supplied description, not the current |
| 1724 | architecture's. This lets a GDB for one architecture generate C |
| 1725 | for another architecture's description, even though the gdbarch |
| 1726 | initialization code will reject the new description. */ |
| 1727 | tdesc = current_target_desc; |
| 1728 | if (tdesc == NULL) |
| 1729 | error (_("There is no target description to print.")); |
| 1730 | |
| 1731 | if (target_description_filename == NULL) |
| 1732 | error (_("The current target description did not come from an XML file.")); |
| 1733 | |
| 1734 | filename = lbasename (target_description_filename); |
| 1735 | function = (char *) alloca (strlen (filename) + 1); |
| 1736 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
| 1737 | if (*inp == '.') |
| 1738 | break; |
| 1739 | else if (*inp == '-') |
| 1740 | *outp++ = '_'; |
| 1741 | else |
| 1742 | *outp++ = *inp; |
| 1743 | *outp = '\0'; |
| 1744 | |
| 1745 | /* Standard boilerplate. */ |
| 1746 | printf_unfiltered ("/* THIS FILE IS GENERATED. " |
| 1747 | "-*- buffer-read-only: t -*- vi" |
| 1748 | ":set ro:\n"); |
| 1749 | printf_unfiltered (" Original: %s */\n\n", filename); |
| 1750 | printf_unfiltered ("#include \"defs.h\"\n"); |
| 1751 | printf_unfiltered ("#include \"osabi.h\"\n"); |
| 1752 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
| 1753 | printf_unfiltered ("\n"); |
| 1754 | |
| 1755 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); |
| 1756 | printf_unfiltered ("static void\n"); |
| 1757 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); |
| 1758 | printf_unfiltered ("{\n"); |
| 1759 | printf_unfiltered |
| 1760 | (" struct target_desc *result = allocate_target_description ();\n"); |
| 1761 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
| 1762 | |
| 1763 | /* Now we do some "filtering" in order to know which variables to |
| 1764 | declare. This is needed because otherwise we would declare unused |
| 1765 | variables `field_type' and `type'. */ |
| 1766 | for (ix = 0; |
| 1767 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); |
| 1768 | ix++) |
| 1769 | { |
| 1770 | int printed_desc_type = 0; |
| 1771 | |
| 1772 | for (ix2 = 0; |
| 1773 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
| 1774 | ix2++) |
| 1775 | { |
| 1776 | if (!printed_field_type) |
| 1777 | { |
| 1778 | printf_unfiltered (" struct tdesc_type *field_type;\n"); |
| 1779 | printed_field_type = 1; |
| 1780 | } |
| 1781 | |
| 1782 | if ((type->kind == TDESC_TYPE_UNION |
| 1783 | || type->kind == TDESC_TYPE_STRUCT |
| 1784 | || type->kind == TDESC_TYPE_FLAGS |
| 1785 | || type->kind == TDESC_TYPE_ENUM) |
| 1786 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0) |
| 1787 | { |
| 1788 | printf_unfiltered (" struct tdesc_type *type;\n"); |
| 1789 | printed_desc_type = 1; |
| 1790 | break; |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | if (printed_desc_type) |
| 1795 | break; |
| 1796 | } |
| 1797 | |
| 1798 | printf_unfiltered ("\n"); |
| 1799 | |
| 1800 | if (tdesc_architecture (tdesc) != NULL) |
| 1801 | { |
| 1802 | printf_unfiltered |
| 1803 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", |
| 1804 | tdesc_architecture (tdesc)->printable_name); |
| 1805 | printf_unfiltered ("\n"); |
| 1806 | } |
| 1807 | |
| 1808 | if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN |
| 1809 | && tdesc_osabi (tdesc) < GDB_OSABI_INVALID) |
| 1810 | { |
| 1811 | printf_unfiltered |
| 1812 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", |
| 1813 | gdbarch_osabi_name (tdesc_osabi (tdesc))); |
| 1814 | printf_unfiltered ("\n"); |
| 1815 | } |
| 1816 | |
| 1817 | for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible); |
| 1818 | ix++) |
| 1819 | { |
| 1820 | printf_unfiltered |
| 1821 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", |
| 1822 | compatible->printable_name); |
| 1823 | } |
| 1824 | if (ix) |
| 1825 | printf_unfiltered ("\n"); |
| 1826 | |
| 1827 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); |
| 1828 | ix++) |
| 1829 | { |
| 1830 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", |
| 1831 | prop->key, prop->value); |
| 1832 | } |
| 1833 | |
| 1834 | for (ix = 0; |
| 1835 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); |
| 1836 | ix++) |
| 1837 | { |
| 1838 | printf_unfiltered (" \ |
| 1839 | feature = tdesc_create_feature (result, \"%s\");\n", |
| 1840 | feature->name); |
| 1841 | |
| 1842 | for (ix2 = 0; |
| 1843 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
| 1844 | ix2++) |
| 1845 | { |
| 1846 | switch (type->kind) |
| 1847 | { |
| 1848 | case TDESC_TYPE_VECTOR: |
| 1849 | printf_unfiltered |
| 1850 | (" field_type = tdesc_named_type (feature, \"%s\");\n", |
| 1851 | type->u.v.type->name); |
| 1852 | printf_unfiltered |
| 1853 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
| 1854 | type->name, type->u.v.count); |
| 1855 | break; |
| 1856 | case TDESC_TYPE_STRUCT: |
| 1857 | case TDESC_TYPE_FLAGS: |
| 1858 | if (type->kind == TDESC_TYPE_STRUCT) |
| 1859 | { |
| 1860 | printf_unfiltered |
| 1861 | (" type = tdesc_create_struct (feature, \"%s\");\n", |
| 1862 | type->name); |
| 1863 | if (type->u.u.size != 0) |
| 1864 | printf_unfiltered |
| 1865 | (" tdesc_set_struct_size (type, %d);\n", |
| 1866 | type->u.u.size); |
| 1867 | } |
| 1868 | else |
| 1869 | { |
| 1870 | printf_unfiltered |
| 1871 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", |
| 1872 | type->name, type->u.u.size); |
| 1873 | } |
| 1874 | for (ix3 = 0; |
| 1875 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); |
| 1876 | ix3++) |
| 1877 | { |
| 1878 | const char *type_name; |
| 1879 | |
| 1880 | gdb_assert (f->type != NULL); |
| 1881 | type_name = f->type->name; |
| 1882 | |
| 1883 | /* To minimize changes to generated files, don't emit type |
| 1884 | info for fields that have defaulted types. */ |
| 1885 | if (f->start != -1) |
| 1886 | { |
| 1887 | gdb_assert (f->end != -1); |
| 1888 | if (f->type->kind == TDESC_TYPE_BOOL) |
| 1889 | { |
| 1890 | gdb_assert (f->start == f->end); |
| 1891 | printf_unfiltered |
| 1892 | (" tdesc_add_flag (type, %d, \"%s\");\n", |
| 1893 | f->start, f->name); |
| 1894 | } |
| 1895 | else if ((type->u.u.size == 4 |
| 1896 | && f->type->kind == TDESC_TYPE_UINT32) |
| 1897 | || (type->u.u.size == 8 |
| 1898 | && f->type->kind == TDESC_TYPE_UINT64)) |
| 1899 | { |
| 1900 | printf_unfiltered |
| 1901 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", |
| 1902 | f->name, f->start, f->end); |
| 1903 | } |
| 1904 | else |
| 1905 | { |
| 1906 | printf_unfiltered |
| 1907 | (" field_type = tdesc_named_type (feature," |
| 1908 | " \"%s\");\n", |
| 1909 | type_name); |
| 1910 | printf_unfiltered |
| 1911 | (" tdesc_add_typed_bitfield (type, \"%s\"," |
| 1912 | " %d, %d, field_type);\n", |
| 1913 | f->name, f->start, f->end); |
| 1914 | } |
| 1915 | } |
| 1916 | else /* Not a bitfield. */ |
| 1917 | { |
| 1918 | gdb_assert (f->end == -1); |
| 1919 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
| 1920 | printf_unfiltered |
| 1921 | (" field_type = tdesc_named_type (feature," |
| 1922 | " \"%s\");\n", |
| 1923 | type_name); |
| 1924 | printf_unfiltered |
| 1925 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
| 1926 | f->name); |
| 1927 | } |
| 1928 | } |
| 1929 | break; |
| 1930 | case TDESC_TYPE_UNION: |
| 1931 | printf_unfiltered |
| 1932 | (" type = tdesc_create_union (feature, \"%s\");\n", |
| 1933 | type->name); |
| 1934 | for (ix3 = 0; |
| 1935 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); |
| 1936 | ix3++) |
| 1937 | { |
| 1938 | printf_unfiltered |
| 1939 | (" field_type = tdesc_named_type (feature, \"%s\");\n", |
| 1940 | f->type->name); |
| 1941 | printf_unfiltered |
| 1942 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
| 1943 | f->name); |
| 1944 | } |
| 1945 | break; |
| 1946 | case TDESC_TYPE_ENUM: |
| 1947 | printf_unfiltered |
| 1948 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", |
| 1949 | type->name, type->u.u.size); |
| 1950 | for (ix3 = 0; |
| 1951 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); |
| 1952 | ix3++) |
| 1953 | printf_unfiltered |
| 1954 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", |
| 1955 | f->start, f->name); |
| 1956 | break; |
| 1957 | default: |
| 1958 | error (_("C output is not supported type \"%s\"."), type->name); |
| 1959 | } |
| 1960 | printf_unfiltered ("\n"); |
| 1961 | } |
| 1962 | |
| 1963 | for (ix2 = 0; |
| 1964 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); |
| 1965 | ix2++) |
| 1966 | { |
| 1967 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", |
| 1968 | reg->name, reg->target_regnum, reg->save_restore); |
| 1969 | if (reg->group) |
| 1970 | printf_unfiltered ("\"%s\", ", reg->group); |
| 1971 | else |
| 1972 | printf_unfiltered ("NULL, "); |
| 1973 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); |
| 1974 | } |
| 1975 | |
| 1976 | printf_unfiltered ("\n"); |
| 1977 | } |
| 1978 | |
| 1979 | printf_unfiltered (" tdesc_%s = result;\n", function); |
| 1980 | printf_unfiltered ("}\n"); |
| 1981 | } |
| 1982 | |
| 1983 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 1984 | extern initialize_file_ftype _initialize_target_descriptions; |
| 1985 | |
| 1986 | void |
| 1987 | _initialize_target_descriptions (void) |
| 1988 | { |
| 1989 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
| 1990 | |
| 1991 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
| 1992 | Set target description specific variables."), |
| 1993 | &tdesc_set_cmdlist, "set tdesc ", |
| 1994 | 0 /* allow-unknown */, &setlist); |
| 1995 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ |
| 1996 | Show target description specific variables."), |
| 1997 | &tdesc_show_cmdlist, "show tdesc ", |
| 1998 | 0 /* allow-unknown */, &showlist); |
| 1999 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ |
| 2000 | Unset target description specific variables."), |
| 2001 | &tdesc_unset_cmdlist, "unset tdesc ", |
| 2002 | 0 /* allow-unknown */, &unsetlist); |
| 2003 | |
| 2004 | add_setshow_filename_cmd ("filename", class_obscure, |
| 2005 | &tdesc_filename_cmd_string, |
| 2006 | _("\ |
| 2007 | Set the file to read for an XML target description"), _("\ |
| 2008 | Show the file to read for an XML target description"), _("\ |
| 2009 | When set, GDB will read the target description from a local\n\ |
| 2010 | file instead of querying the remote target."), |
| 2011 | set_tdesc_filename_cmd, |
| 2012 | show_tdesc_filename_cmd, |
| 2013 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); |
| 2014 | |
| 2015 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ |
| 2016 | Unset the file to read for an XML target description. When unset,\n\ |
| 2017 | GDB will read the description from the target."), |
| 2018 | &tdesc_unset_cmdlist); |
| 2019 | |
| 2020 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ |
| 2021 | Print the current target description as a C source file."), |
| 2022 | &maintenanceprintlist); |
| 2023 | } |