| 1 | /* Internal type definitions for GDB. |
| 2 | |
| 3 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 4 | 2002, 2003, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| 5 | |
| 6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
| 7 | |
| 8 | This file is part of GDB. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 22 | |
| 23 | #if !defined (GDBTYPES_H) |
| 24 | #define GDBTYPES_H 1 |
| 25 | |
| 26 | #include "hashtab.h" |
| 27 | |
| 28 | /* Forward declarations for prototypes. */ |
| 29 | struct field; |
| 30 | struct block; |
| 31 | struct value_print_options; |
| 32 | |
| 33 | /* Some macros for char-based bitfields. */ |
| 34 | |
| 35 | #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7))) |
| 36 | #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7))) |
| 37 | #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7))) |
| 38 | #define B_TYPE unsigned char |
| 39 | #define B_BYTES(x) ( 1 + ((x)>>3) ) |
| 40 | #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x)) |
| 41 | |
| 42 | /* Different kinds of data types are distinguished by the `code' field. */ |
| 43 | |
| 44 | enum type_code |
| 45 | { |
| 46 | TYPE_CODE_UNDEF, /* Not used; catches errors */ |
| 47 | TYPE_CODE_PTR, /* Pointer type */ |
| 48 | |
| 49 | /* Array type with lower & upper bounds. |
| 50 | |
| 51 | Regardless of the language, GDB represents multidimensional |
| 52 | array types the way C does: as arrays of arrays. So an |
| 53 | instance of a GDB array type T can always be seen as a series |
| 54 | of instances of TYPE_TARGET_TYPE (T) laid out sequentially in |
| 55 | memory. |
| 56 | |
| 57 | Row-major languages like C lay out multi-dimensional arrays so |
| 58 | that incrementing the rightmost index in a subscripting |
| 59 | expression results in the smallest change in the address of the |
| 60 | element referred to. Column-major languages like Fortran lay |
| 61 | them out so that incrementing the leftmost index results in the |
| 62 | smallest change. |
| 63 | |
| 64 | This means that, in column-major languages, working our way |
| 65 | from type to target type corresponds to working through indices |
| 66 | from right to left, not left to right. */ |
| 67 | TYPE_CODE_ARRAY, |
| 68 | |
| 69 | TYPE_CODE_STRUCT, /* C struct or Pascal record */ |
| 70 | TYPE_CODE_UNION, /* C union or Pascal variant part */ |
| 71 | TYPE_CODE_ENUM, /* Enumeration type */ |
| 72 | TYPE_CODE_FLAGS, /* Bit flags type */ |
| 73 | TYPE_CODE_FUNC, /* Function type */ |
| 74 | TYPE_CODE_INT, /* Integer type */ |
| 75 | |
| 76 | /* Floating type. This is *NOT* a complex type. Beware, there are parts |
| 77 | of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */ |
| 78 | TYPE_CODE_FLT, |
| 79 | |
| 80 | /* Void type. The length field specifies the length (probably always |
| 81 | one) which is used in pointer arithmetic involving pointers to |
| 82 | this type, but actually dereferencing such a pointer is invalid; |
| 83 | a void type has no length and no actual representation in memory |
| 84 | or registers. A pointer to a void type is a generic pointer. */ |
| 85 | TYPE_CODE_VOID, |
| 86 | |
| 87 | TYPE_CODE_SET, /* Pascal sets */ |
| 88 | TYPE_CODE_RANGE, /* Range (integers within spec'd bounds) */ |
| 89 | |
| 90 | /* A string type which is like an array of character but prints |
| 91 | differently (at least for (the deleted) CHILL). It does not |
| 92 | contain a length field as Pascal strings (for many Pascals, |
| 93 | anyway) do; if we want to deal with such strings, we should use |
| 94 | a new type code. */ |
| 95 | TYPE_CODE_STRING, |
| 96 | |
| 97 | /* String of bits; like TYPE_CODE_SET but prints differently (at |
| 98 | least for (the deleted) CHILL). */ |
| 99 | TYPE_CODE_BITSTRING, |
| 100 | |
| 101 | /* Unknown type. The length field is valid if we were able to |
| 102 | deduce that much about the type, or 0 if we don't even know that. */ |
| 103 | TYPE_CODE_ERROR, |
| 104 | |
| 105 | /* C++ */ |
| 106 | TYPE_CODE_METHOD, /* Method type */ |
| 107 | |
| 108 | /* Pointer-to-member-function type. This describes how to access a |
| 109 | particular member function of a class (possibly a virtual |
| 110 | member function). The representation may vary between different |
| 111 | C++ ABIs. */ |
| 112 | TYPE_CODE_METHODPTR, |
| 113 | |
| 114 | /* Pointer-to-member type. This is the offset within a class to some |
| 115 | particular data member. The only currently supported representation |
| 116 | uses an unbiased offset, with -1 representing NULL; this is used |
| 117 | by the Itanium C++ ABI (used by GCC on all platforms). */ |
| 118 | TYPE_CODE_MEMBERPTR, |
| 119 | |
| 120 | TYPE_CODE_REF, /* C++ Reference types */ |
| 121 | |
| 122 | TYPE_CODE_CHAR, /* *real* character type */ |
| 123 | |
| 124 | /* Boolean type. 0 is false, 1 is true, and other values are non-boolean |
| 125 | (e.g. FORTRAN "logical" used as unsigned int). */ |
| 126 | TYPE_CODE_BOOL, |
| 127 | |
| 128 | /* Fortran */ |
| 129 | TYPE_CODE_COMPLEX, /* Complex float */ |
| 130 | |
| 131 | TYPE_CODE_TYPEDEF, |
| 132 | TYPE_CODE_TEMPLATE, /* C++ template */ |
| 133 | TYPE_CODE_TEMPLATE_ARG, /* C++ template arg */ |
| 134 | |
| 135 | TYPE_CODE_NAMESPACE, /* C++ namespace. */ |
| 136 | |
| 137 | TYPE_CODE_DECFLOAT /* Decimal floating point. */ |
| 138 | }; |
| 139 | |
| 140 | /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an |
| 141 | alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct |
| 142 | "class" attribute. Perhaps we should actually have a separate TYPE_CODE |
| 143 | so that we can print "class" or "struct" depending on what the debug |
| 144 | info said. It's not clear we should bother. */ |
| 145 | |
| 146 | #define TYPE_CODE_CLASS TYPE_CODE_STRUCT |
| 147 | |
| 148 | /* Some constants representing each bit field in the main_type. See |
| 149 | the bit-field-specific macros, below, for documentation of each |
| 150 | constant in this enum. These enum values are only used with |
| 151 | init_type. Note that the values are chosen not to conflict with |
| 152 | type_instance_flag_value; this lets init_type error-check its |
| 153 | input. */ |
| 154 | |
| 155 | enum type_flag_value |
| 156 | { |
| 157 | TYPE_FLAG_UNSIGNED = (1 << 6), |
| 158 | TYPE_FLAG_NOSIGN = (1 << 7), |
| 159 | TYPE_FLAG_STUB = (1 << 8), |
| 160 | TYPE_FLAG_TARGET_STUB = (1 << 9), |
| 161 | TYPE_FLAG_STATIC = (1 << 10), |
| 162 | TYPE_FLAG_PROTOTYPED = (1 << 11), |
| 163 | TYPE_FLAG_INCOMPLETE = (1 << 12), |
| 164 | TYPE_FLAG_VARARGS = (1 << 13), |
| 165 | TYPE_FLAG_VECTOR = (1 << 14), |
| 166 | TYPE_FLAG_FIXED_INSTANCE = (1 << 15), |
| 167 | TYPE_FLAG_STUB_SUPPORTED = (1 << 16), |
| 168 | TYPE_FLAG_NOTTEXT = (1 << 17), |
| 169 | |
| 170 | /* Used for error-checking. */ |
| 171 | TYPE_FLAG_MIN = TYPE_FLAG_UNSIGNED |
| 172 | }; |
| 173 | |
| 174 | /* Some bits for the type's instance_flags word. See the macros below |
| 175 | for documentation on each bit. Note that if you add a value here, |
| 176 | you must update the enum type_flag_value as well. */ |
| 177 | enum type_instance_flag_value |
| 178 | { |
| 179 | TYPE_INSTANCE_FLAG_CONST = (1 << 0), |
| 180 | TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1), |
| 181 | TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2), |
| 182 | TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3), |
| 183 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4), |
| 184 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5) |
| 185 | }; |
| 186 | |
| 187 | /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the |
| 188 | type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */ |
| 189 | |
| 190 | #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned) |
| 191 | |
| 192 | /* No sign for this type. In C++, "char", "signed char", and "unsigned |
| 193 | char" are distinct types; so we need an extra flag to indicate the |
| 194 | absence of a sign! */ |
| 195 | |
| 196 | #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign) |
| 197 | |
| 198 | /* This appears in a type's flags word if it is a stub type (e.g., if |
| 199 | someone referenced a type that wasn't defined in a source file |
| 200 | via (struct sir_not_appearing_in_this_film *)). */ |
| 201 | |
| 202 | #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub) |
| 203 | |
| 204 | /* The target type of this type is a stub type, and this type needs to |
| 205 | be updated if it gets un-stubbed in check_typedef. |
| 206 | Used for arrays and ranges, in which TYPE_LENGTH of the array/range |
| 207 | gets set based on the TYPE_LENGTH of the target type. |
| 208 | Also, set for TYPE_CODE_TYPEDEF. */ |
| 209 | |
| 210 | #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub) |
| 211 | |
| 212 | /* Static type. If this is set, the corresponding type had |
| 213 | * a static modifier. |
| 214 | * Note: This may be unnecessary, since static data members |
| 215 | * are indicated by other means (bitpos == -1) |
| 216 | */ |
| 217 | |
| 218 | #define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static) |
| 219 | |
| 220 | /* This is a function type which appears to have a prototype. We need this |
| 221 | for function calls in order to tell us if it's necessary to coerce the args, |
| 222 | or to just do the standard conversions. This is used with a short field. */ |
| 223 | |
| 224 | #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped) |
| 225 | |
| 226 | /* This flag is used to indicate that processing for this type |
| 227 | is incomplete. |
| 228 | |
| 229 | (Mostly intended for HP platforms, where class methods, for |
| 230 | instance, can be encountered before their classes in the debug |
| 231 | info; the incomplete type has to be marked so that the class and |
| 232 | the method can be assigned correct types.) */ |
| 233 | |
| 234 | #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete) |
| 235 | |
| 236 | /* FIXME drow/2002-06-03: Only used for methods, but applies as well |
| 237 | to functions. */ |
| 238 | |
| 239 | #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs) |
| 240 | |
| 241 | /* Identify a vector type. Gcc is handling this by adding an extra |
| 242 | attribute to the array type. We slurp that in as a new flag of a |
| 243 | type. This is used only in dwarf2read.c. */ |
| 244 | #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector) |
| 245 | |
| 246 | /* The debugging formats (especially STABS) do not contain enough information |
| 247 | to represent all Ada types---especially those whose size depends on |
| 248 | dynamic quantities. Therefore, the GNAT Ada compiler includes |
| 249 | extra information in the form of additional type definitions |
| 250 | connected by naming conventions. This flag indicates that the |
| 251 | type is an ordinary (unencoded) GDB type that has been created from |
| 252 | the necessary run-time information, and does not need further |
| 253 | interpretation. Optionally marks ordinary, fixed-size GDB type. */ |
| 254 | |
| 255 | #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance) |
| 256 | |
| 257 | /* This debug target supports TYPE_STUB(t). In the unsupported case we have to |
| 258 | rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE (). |
| 259 | TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed |
| 260 | the TYPE_STUB(t) value (see dwarfread.c). */ |
| 261 | |
| 262 | #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported) |
| 263 | |
| 264 | /* Not textual. By default, GDB treats all single byte integers as |
| 265 | characters (or elements of strings) unless this flag is set. */ |
| 266 | |
| 267 | #define TYPE_NOTTEXT(t) (TYPE_MAIN_TYPE (t)->flag_nottext) |
| 268 | |
| 269 | /* Constant type. If this is set, the corresponding type has a |
| 270 | * const modifier. |
| 271 | */ |
| 272 | |
| 273 | #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) |
| 274 | |
| 275 | /* Volatile type. If this is set, the corresponding type has a |
| 276 | * volatile modifier. |
| 277 | */ |
| 278 | |
| 279 | #define TYPE_VOLATILE(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) |
| 280 | |
| 281 | /* Instruction-space delimited type. This is for Harvard architectures |
| 282 | which have separate instruction and data address spaces (and perhaps |
| 283 | others). |
| 284 | |
| 285 | GDB usually defines a flat address space that is a superset of the |
| 286 | architecture's two (or more) address spaces, but this is an extension |
| 287 | of the architecture's model. |
| 288 | |
| 289 | If TYPE_FLAG_INST is set, an object of the corresponding type |
| 290 | resides in instruction memory, even if its address (in the extended |
| 291 | flat address space) does not reflect this. |
| 292 | |
| 293 | Similarly, if TYPE_FLAG_DATA is set, then an object of the |
| 294 | corresponding type resides in the data memory space, even if |
| 295 | this is not indicated by its (flat address space) address. |
| 296 | |
| 297 | If neither flag is set, the default space for functions / methods |
| 298 | is instruction space, and for data objects is data memory. */ |
| 299 | |
| 300 | #define TYPE_CODE_SPACE(t) \ |
| 301 | (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) |
| 302 | |
| 303 | #define TYPE_DATA_SPACE(t) \ |
| 304 | (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) |
| 305 | |
| 306 | /* Address class flags. Some environments provide for pointers whose |
| 307 | size is different from that of a normal pointer or address types |
| 308 | where the bits are interpreted differently than normal addresses. The |
| 309 | TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific |
| 310 | ways to represent these different types of address classes. */ |
| 311 | #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \ |
| 312 | & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1) |
| 313 | #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \ |
| 314 | & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2) |
| 315 | #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \ |
| 316 | (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2) |
| 317 | #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \ |
| 318 | & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
| 319 | |
| 320 | /* Determine which field of the union main_type.fields[x].loc is used. */ |
| 321 | |
| 322 | enum field_loc_kind |
| 323 | { |
| 324 | FIELD_LOC_KIND_BITPOS, /* bitpos */ |
| 325 | FIELD_LOC_KIND_PHYSADDR, /* physaddr */ |
| 326 | FIELD_LOC_KIND_PHYSNAME, /* physname */ |
| 327 | FIELD_LOC_KIND_DWARF_BLOCK /* dwarf_block */ |
| 328 | }; |
| 329 | |
| 330 | /* This structure is space-critical. |
| 331 | Its layout has been tweaked to reduce the space used. */ |
| 332 | |
| 333 | struct main_type |
| 334 | { |
| 335 | /* Code for kind of type */ |
| 336 | |
| 337 | ENUM_BITFIELD(type_code) code : 8; |
| 338 | |
| 339 | /* Flags about this type. These fields appear at this location |
| 340 | because they packs nicely here. See the TYPE_* macros for |
| 341 | documentation about these fields. */ |
| 342 | |
| 343 | unsigned int flag_unsigned : 1; |
| 344 | unsigned int flag_nosign : 1; |
| 345 | unsigned int flag_stub : 1; |
| 346 | unsigned int flag_target_stub : 1; |
| 347 | unsigned int flag_static : 1; |
| 348 | unsigned int flag_prototyped : 1; |
| 349 | unsigned int flag_incomplete : 1; |
| 350 | unsigned int flag_varargs : 1; |
| 351 | unsigned int flag_vector : 1; |
| 352 | unsigned int flag_stub_supported : 1; |
| 353 | unsigned int flag_nottext : 1; |
| 354 | unsigned int flag_fixed_instance : 1; |
| 355 | |
| 356 | /* Number of fields described for this type. This field appears at |
| 357 | this location because it packs nicely here. */ |
| 358 | |
| 359 | short nfields; |
| 360 | |
| 361 | /* Field number of the virtual function table pointer in |
| 362 | VPTR_BASETYPE. If -1, we were unable to find the virtual |
| 363 | function table pointer in initial symbol reading, and |
| 364 | get_vptr_fieldno should be called to find it if possible. |
| 365 | get_vptr_fieldno will update this field if possible. |
| 366 | Otherwise the value is left at -1. |
| 367 | |
| 368 | Unused if this type does not have virtual functions. |
| 369 | |
| 370 | This field appears at this location because it packs nicely here. */ |
| 371 | |
| 372 | short vptr_fieldno; |
| 373 | |
| 374 | /* Name of this type, or NULL if none. |
| 375 | |
| 376 | This is used for printing only, except by poorly designed C++ code. |
| 377 | For looking up a name, look for a symbol in the VAR_DOMAIN. */ |
| 378 | |
| 379 | char *name; |
| 380 | |
| 381 | /* Tag name for this type, or NULL if none. This means that the |
| 382 | name of the type consists of a keyword followed by the tag name. |
| 383 | Which keyword is determined by the type code ("struct" for |
| 384 | TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages |
| 385 | with this feature. |
| 386 | |
| 387 | This is used for printing only, except by poorly designed C++ code. |
| 388 | For looking up a name, look for a symbol in the STRUCT_DOMAIN. |
| 389 | One more legitimate use is that if TYPE_FLAG_STUB is set, this is |
| 390 | the name to use to look for definitions in other files. */ |
| 391 | |
| 392 | char *tag_name; |
| 393 | |
| 394 | /* Every type is now associated with a particular objfile, and the |
| 395 | type is allocated on the objfile_obstack for that objfile. One problem |
| 396 | however, is that there are times when gdb allocates new types while |
| 397 | it is not in the process of reading symbols from a particular objfile. |
| 398 | Fortunately, these happen when the type being created is a derived |
| 399 | type of an existing type, such as in lookup_pointer_type(). So |
| 400 | we can just allocate the new type using the same objfile as the |
| 401 | existing type, but to do this we need a backpointer to the objfile |
| 402 | from the existing type. Yes this is somewhat ugly, but without |
| 403 | major overhaul of the internal type system, it can't be avoided |
| 404 | for now. */ |
| 405 | |
| 406 | struct objfile *objfile; |
| 407 | |
| 408 | /* For a pointer type, describes the type of object pointed to. |
| 409 | For an array type, describes the type of the elements. |
| 410 | For a function or method type, describes the type of the return value. |
| 411 | For a range type, describes the type of the full range. |
| 412 | For a complex type, describes the type of each coordinate. |
| 413 | Unused otherwise. */ |
| 414 | |
| 415 | struct type *target_type; |
| 416 | |
| 417 | /* For structure and union types, a description of each field. |
| 418 | For set and pascal array types, there is one "field", |
| 419 | whose type is the domain type of the set or array. |
| 420 | For range types, there are two "fields", |
| 421 | the minimum and maximum values (both inclusive). |
| 422 | For enum types, each possible value is described by one "field". |
| 423 | For a function or method type, a "field" for each parameter. |
| 424 | For C++ classes, there is one field for each base class (if it is |
| 425 | a derived class) plus one field for each class data member. Member |
| 426 | functions are recorded elsewhere. |
| 427 | |
| 428 | Using a pointer to a separate array of fields |
| 429 | allows all types to have the same size, which is useful |
| 430 | because we can allocate the space for a type before |
| 431 | we know what to put in it. */ |
| 432 | |
| 433 | struct field |
| 434 | { |
| 435 | union field_location |
| 436 | { |
| 437 | /* Position of this field, counting in bits from start of |
| 438 | containing structure. |
| 439 | For gdbarch_bits_big_endian=1 targets, it is the bit offset to the MSB. |
| 440 | For gdbarch_bits_big_endian=0 targets, it is the bit offset to the LSB. |
| 441 | For a range bound or enum value, this is the value itself. */ |
| 442 | |
| 443 | int bitpos; |
| 444 | |
| 445 | /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr |
| 446 | is the location (in the target) of the static field. |
| 447 | Otherwise, physname is the mangled label of the static field. */ |
| 448 | |
| 449 | CORE_ADDR physaddr; |
| 450 | char *physname; |
| 451 | |
| 452 | /* The field location can be computed by evaluating the following DWARF |
| 453 | block. This can be used in Fortran variable-length arrays, for |
| 454 | instance. */ |
| 455 | |
| 456 | struct dwarf2_locexpr_baton *dwarf_block; |
| 457 | } |
| 458 | loc; |
| 459 | |
| 460 | /* For a function or member type, this is 1 if the argument is marked |
| 461 | artificial. Artificial arguments should not be shown to the |
| 462 | user. For TYPE_CODE_RANGE it is set if the specific bound is not |
| 463 | defined. */ |
| 464 | unsigned int artificial : 1; |
| 465 | |
| 466 | /* Discriminant for union field_location. */ |
| 467 | ENUM_BITFIELD(field_loc_kind) loc_kind : 2; |
| 468 | |
| 469 | /* Size of this field, in bits, or zero if not packed. |
| 470 | For an unpacked field, the field's type's length |
| 471 | says how many bytes the field occupies. */ |
| 472 | |
| 473 | unsigned int bitsize : 29; |
| 474 | |
| 475 | /* In a struct or union type, type of this field. |
| 476 | In a function or member type, type of this argument. |
| 477 | In an array type, the domain-type of the array. */ |
| 478 | |
| 479 | struct type *type; |
| 480 | |
| 481 | /* Name of field, value or argument. |
| 482 | NULL for range bounds, array domains, and member function |
| 483 | arguments. */ |
| 484 | |
| 485 | char *name; |
| 486 | |
| 487 | } *fields; |
| 488 | |
| 489 | /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE |
| 490 | is the base class which defined the virtual function table pointer. |
| 491 | |
| 492 | For types that are pointer to member types (TYPE_CODE_METHODPTR, |
| 493 | TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer |
| 494 | is a member of. |
| 495 | |
| 496 | For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate |
| 497 | type that contains the method. |
| 498 | |
| 499 | Unused otherwise. */ |
| 500 | |
| 501 | struct type *vptr_basetype; |
| 502 | |
| 503 | /* Slot to point to additional language-specific fields of this type. */ |
| 504 | |
| 505 | union type_specific |
| 506 | { |
| 507 | /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to |
| 508 | cplus_struct_default, a default static instance of a struct |
| 509 | cplus_struct_type. */ |
| 510 | |
| 511 | struct cplus_struct_type *cplus_stuff; |
| 512 | |
| 513 | /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two |
| 514 | floatformat objects that describe the floating-point value |
| 515 | that resides within the type. The first is for big endian |
| 516 | targets and the second is for little endian targets. */ |
| 517 | |
| 518 | const struct floatformat **floatformat; |
| 519 | |
| 520 | /* For TYPE_CODE_FUNC types, the calling convention for targets |
| 521 | supporting multiple ABIs. Right now this is only fetched from |
| 522 | the Dwarf-2 DW_AT_calling_convention attribute. */ |
| 523 | unsigned calling_convention; |
| 524 | } type_specific; |
| 525 | }; |
| 526 | |
| 527 | /* A ``struct type'' describes a particular instance of a type, with |
| 528 | some particular qualification. */ |
| 529 | struct type |
| 530 | { |
| 531 | /* Type that is a pointer to this type. |
| 532 | NULL if no such pointer-to type is known yet. |
| 533 | The debugger may add the address of such a type |
| 534 | if it has to construct one later. */ |
| 535 | |
| 536 | struct type *pointer_type; |
| 537 | |
| 538 | /* C++: also need a reference type. */ |
| 539 | |
| 540 | struct type *reference_type; |
| 541 | |
| 542 | /* Variant chain. This points to a type that differs from this one only |
| 543 | in qualifiers and length. Currently, the possible qualifiers are |
| 544 | const, volatile, code-space, data-space, and address class. The |
| 545 | length may differ only when one of the address class flags are set. |
| 546 | The variants are linked in a circular ring and share MAIN_TYPE. */ |
| 547 | struct type *chain; |
| 548 | |
| 549 | /* Flags specific to this instance of the type, indicating where |
| 550 | on the ring we are. */ |
| 551 | int instance_flags; |
| 552 | |
| 553 | /* Length of storage for a value of this type. This is what |
| 554 | sizeof(type) would return; use it for address arithmetic, |
| 555 | memory reads and writes, etc. This size includes padding. For |
| 556 | example, an i386 extended-precision floating point value really |
| 557 | only occupies ten bytes, but most ABI's declare its size to be |
| 558 | 12 bytes, to preserve alignment. A `struct type' representing |
| 559 | such a floating-point type would have a `length' value of 12, |
| 560 | even though the last two bytes are unused. |
| 561 | |
| 562 | There's a bit of a host/target mess here, if you're concerned |
| 563 | about machines whose bytes aren't eight bits long, or who don't |
| 564 | have byte-addressed memory. Various places pass this to memcpy |
| 565 | and such, meaning it must be in units of host bytes. Various |
| 566 | other places expect they can calculate addresses by adding it |
| 567 | and such, meaning it must be in units of target bytes. For |
| 568 | some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8 |
| 569 | and TARGET_CHAR_BIT will be (say) 32, this is a problem. |
| 570 | |
| 571 | One fix would be to make this field in bits (requiring that it |
| 572 | always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) --- |
| 573 | the other choice would be to make it consistently in units of |
| 574 | HOST_CHAR_BIT. However, this would still fail to address |
| 575 | machines based on a ternary or decimal representation. */ |
| 576 | |
| 577 | unsigned length; |
| 578 | |
| 579 | /* Core type, shared by a group of qualified types. */ |
| 580 | struct main_type *main_type; |
| 581 | }; |
| 582 | |
| 583 | #define NULL_TYPE ((struct type *) 0) |
| 584 | |
| 585 | /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION |
| 586 | nodes. */ |
| 587 | |
| 588 | struct cplus_struct_type |
| 589 | { |
| 590 | /* Number of base classes this type derives from. The baseclasses are |
| 591 | stored in the first N_BASECLASSES fields (i.e. the `fields' field of |
| 592 | the struct type). I think only the `type' field of such a field has |
| 593 | any meaning. */ |
| 594 | |
| 595 | short n_baseclasses; |
| 596 | |
| 597 | /* Number of methods with unique names. All overloaded methods with |
| 598 | the same name count only once. */ |
| 599 | |
| 600 | short nfn_fields; |
| 601 | |
| 602 | /* Number of methods described for this type, not including the |
| 603 | methods that it derives from. */ |
| 604 | |
| 605 | short nfn_fields_total; |
| 606 | |
| 607 | /* The "declared_type" field contains a code saying how the |
| 608 | user really declared this type, e.g., "class s", "union s", |
| 609 | "struct s". |
| 610 | The 3 above things come out from the C++ compiler looking like classes, |
| 611 | but we keep track of the real declaration so we can give |
| 612 | the correct information on "ptype". (Note: TEMPLATE may not |
| 613 | belong in this list...) */ |
| 614 | |
| 615 | #define DECLARED_TYPE_CLASS 0 |
| 616 | #define DECLARED_TYPE_UNION 1 |
| 617 | #define DECLARED_TYPE_STRUCT 2 |
| 618 | #define DECLARED_TYPE_TEMPLATE 3 |
| 619 | short declared_type; /* One of the above codes */ |
| 620 | |
| 621 | /* For derived classes, the number of base classes is given by n_baseclasses |
| 622 | and virtual_field_bits is a bit vector containing one bit per base class. |
| 623 | If the base class is virtual, the corresponding bit will be set. |
| 624 | I.E, given: |
| 625 | |
| 626 | class A{}; |
| 627 | class B{}; |
| 628 | class C : public B, public virtual A {}; |
| 629 | |
| 630 | B is a baseclass of C; A is a virtual baseclass for C. |
| 631 | This is a C++ 2.0 language feature. */ |
| 632 | |
| 633 | B_TYPE *virtual_field_bits; |
| 634 | |
| 635 | /* For classes with private fields, the number of fields is given by |
| 636 | nfields and private_field_bits is a bit vector containing one bit |
| 637 | per field. |
| 638 | If the field is private, the corresponding bit will be set. */ |
| 639 | |
| 640 | B_TYPE *private_field_bits; |
| 641 | |
| 642 | /* For classes with protected fields, the number of fields is given by |
| 643 | nfields and protected_field_bits is a bit vector containing one bit |
| 644 | per field. |
| 645 | If the field is private, the corresponding bit will be set. */ |
| 646 | |
| 647 | B_TYPE *protected_field_bits; |
| 648 | |
| 649 | /* for classes with fields to be ignored, either this is optimized out |
| 650 | or this field has length 0 */ |
| 651 | |
| 652 | B_TYPE *ignore_field_bits; |
| 653 | |
| 654 | /* For classes, structures, and unions, a description of each field, |
| 655 | which consists of an overloaded name, followed by the types of |
| 656 | arguments that the method expects, and then the name after it |
| 657 | has been renamed to make it distinct. |
| 658 | |
| 659 | fn_fieldlists points to an array of nfn_fields of these. */ |
| 660 | |
| 661 | struct fn_fieldlist |
| 662 | { |
| 663 | |
| 664 | /* The overloaded name. */ |
| 665 | |
| 666 | char *name; |
| 667 | |
| 668 | /* The number of methods with this name. */ |
| 669 | |
| 670 | int length; |
| 671 | |
| 672 | /* The list of methods. */ |
| 673 | |
| 674 | struct fn_field |
| 675 | { |
| 676 | |
| 677 | /* If is_stub is clear, this is the mangled name which we can |
| 678 | look up to find the address of the method (FIXME: it would |
| 679 | be cleaner to have a pointer to the struct symbol here |
| 680 | instead). */ |
| 681 | |
| 682 | /* If is_stub is set, this is the portion of the mangled |
| 683 | name which specifies the arguments. For example, "ii", |
| 684 | if there are two int arguments, or "" if there are no |
| 685 | arguments. See gdb_mangle_name for the conversion from this |
| 686 | format to the one used if is_stub is clear. */ |
| 687 | |
| 688 | char *physname; |
| 689 | |
| 690 | /* The function type for the method. |
| 691 | (This comment used to say "The return value of the method", |
| 692 | but that's wrong. The function type |
| 693 | is expected here, i.e. something with TYPE_CODE_FUNC, |
| 694 | and *not* the return-value type). */ |
| 695 | |
| 696 | struct type *type; |
| 697 | |
| 698 | /* For virtual functions. |
| 699 | First baseclass that defines this virtual function. */ |
| 700 | |
| 701 | struct type *fcontext; |
| 702 | |
| 703 | /* Attributes. */ |
| 704 | |
| 705 | unsigned int is_const:1; |
| 706 | unsigned int is_volatile:1; |
| 707 | unsigned int is_private:1; |
| 708 | unsigned int is_protected:1; |
| 709 | unsigned int is_public:1; |
| 710 | unsigned int is_abstract:1; |
| 711 | unsigned int is_static:1; |
| 712 | unsigned int is_final:1; |
| 713 | unsigned int is_synchronized:1; |
| 714 | unsigned int is_native:1; |
| 715 | unsigned int is_artificial:1; |
| 716 | |
| 717 | /* A stub method only has some fields valid (but they are enough |
| 718 | to reconstruct the rest of the fields). */ |
| 719 | unsigned int is_stub:1; |
| 720 | |
| 721 | /* Unused. */ |
| 722 | unsigned int dummy:4; |
| 723 | |
| 724 | /* Index into that baseclass's virtual function table, |
| 725 | minus 2; else if static: VOFFSET_STATIC; else: 0. */ |
| 726 | |
| 727 | unsigned int voffset:16; |
| 728 | |
| 729 | #define VOFFSET_STATIC 1 |
| 730 | |
| 731 | } |
| 732 | *fn_fields; |
| 733 | |
| 734 | } |
| 735 | *fn_fieldlists; |
| 736 | |
| 737 | /* If this "struct type" describes a template, then it |
| 738 | * has arguments. "template_args" points to an array of |
| 739 | * template arg descriptors, of length "ntemplate_args". |
| 740 | * The only real information in each of these template arg descriptors |
| 741 | * is a name. "type" will typically just point to a "struct type" with |
| 742 | * the placeholder TYPE_CODE_TEMPLATE_ARG type. |
| 743 | */ |
| 744 | short ntemplate_args; |
| 745 | struct template_arg |
| 746 | { |
| 747 | char *name; |
| 748 | struct type *type; |
| 749 | } |
| 750 | *template_args; |
| 751 | |
| 752 | /* Pointer to information about enclosing scope, if this is a |
| 753 | * local type. If it is not a local type, this is NULL |
| 754 | */ |
| 755 | struct local_type_info |
| 756 | { |
| 757 | char *file; |
| 758 | int line; |
| 759 | } |
| 760 | *localtype_ptr; |
| 761 | }; |
| 762 | |
| 763 | /* Struct used in computing virtual base list */ |
| 764 | struct vbase |
| 765 | { |
| 766 | struct type *vbasetype; /* pointer to virtual base */ |
| 767 | struct vbase *next; /* next in chain */ |
| 768 | }; |
| 769 | |
| 770 | /* Struct used for ranking a function for overload resolution */ |
| 771 | struct badness_vector |
| 772 | { |
| 773 | int length; |
| 774 | int *rank; |
| 775 | }; |
| 776 | |
| 777 | /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the |
| 778 | this shared static structure. */ |
| 779 | |
| 780 | extern const struct cplus_struct_type cplus_struct_default; |
| 781 | |
| 782 | extern void allocate_cplus_struct_type (struct type *); |
| 783 | |
| 784 | #define INIT_CPLUS_SPECIFIC(type) \ |
| 785 | (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default) |
| 786 | #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type) |
| 787 | #define HAVE_CPLUS_STRUCT(type) \ |
| 788 | (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default) |
| 789 | |
| 790 | #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags |
| 791 | #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type |
| 792 | #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name |
| 793 | #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name |
| 794 | #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type |
| 795 | #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type |
| 796 | #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type |
| 797 | #define TYPE_CHAIN(thistype) (thistype)->chain |
| 798 | /* Note that if thistype is a TYPEDEF type, you have to call check_typedef. |
| 799 | But check_typedef does set the TYPE_LENGTH of the TYPEDEF type, |
| 800 | so you only have to call check_typedef once. Since allocate_value |
| 801 | calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */ |
| 802 | #define TYPE_LENGTH(thistype) (thistype)->length |
| 803 | #define TYPE_OBJFILE(thistype) TYPE_MAIN_TYPE(thistype)->objfile |
| 804 | /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real |
| 805 | type, you need to do TYPE_CODE (check_type (this_type)). */ |
| 806 | #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code |
| 807 | #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields |
| 808 | #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->fields |
| 809 | #define TYPE_TEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->template_args |
| 810 | |
| 811 | #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0) |
| 812 | #define TYPE_LOW_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 0) |
| 813 | #define TYPE_HIGH_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 1) |
| 814 | |
| 815 | /* Moto-specific stuff for FORTRAN arrays */ |
| 816 | |
| 817 | #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \ |
| 818 | (TYPE_FIELD_ARTIFICIAL(TYPE_INDEX_TYPE((arraytype)),1)) |
| 819 | #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \ |
| 820 | (TYPE_FIELD_ARTIFICIAL(TYPE_INDEX_TYPE((arraytype)),0)) |
| 821 | |
| 822 | #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \ |
| 823 | (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype)))) |
| 824 | |
| 825 | #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \ |
| 826 | (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype)))) |
| 827 | |
| 828 | /* C++ */ |
| 829 | |
| 830 | #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype |
| 831 | #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype |
| 832 | #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno |
| 833 | #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields |
| 834 | #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields |
| 835 | #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total |
| 836 | #define TYPE_NTEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ntemplate_args |
| 837 | #define TYPE_DECLARED_TYPE(thistype) TYPE_CPLUS_SPECIFIC(thistype)->declared_type |
| 838 | #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific |
| 839 | #define TYPE_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff |
| 840 | #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat |
| 841 | #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.calling_convention |
| 842 | #define TYPE_BASECLASS(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].type |
| 843 | #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses |
| 844 | #define TYPE_BASECLASS_NAME(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].name |
| 845 | #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index) |
| 846 | #define BASETYPE_VIA_PUBLIC(thistype, index) \ |
| 847 | ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index))) |
| 848 | |
| 849 | #define BASETYPE_VIA_VIRTUAL(thistype, index) \ |
| 850 | (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \ |
| 851 | : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))) |
| 852 | |
| 853 | #define FIELD_TYPE(thisfld) ((thisfld).type) |
| 854 | #define FIELD_NAME(thisfld) ((thisfld).name) |
| 855 | #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind) |
| 856 | #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos) |
| 857 | #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname) |
| 858 | #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr) |
| 859 | #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block) |
| 860 | #define SET_FIELD_BITPOS(thisfld, bitpos) \ |
| 861 | (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \ |
| 862 | FIELD_BITPOS (thisfld) = (bitpos)) |
| 863 | #define SET_FIELD_PHYSNAME(thisfld, name) \ |
| 864 | (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \ |
| 865 | FIELD_STATIC_PHYSNAME (thisfld) = (name)) |
| 866 | #define SET_FIELD_PHYSADDR(thisfld, addr) \ |
| 867 | (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \ |
| 868 | FIELD_STATIC_PHYSADDR (thisfld) = (addr)) |
| 869 | #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \ |
| 870 | (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \ |
| 871 | FIELD_DWARF_BLOCK (thisfld) = (addr)) |
| 872 | #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial) |
| 873 | #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize) |
| 874 | |
| 875 | #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->fields[n] |
| 876 | #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n)) |
| 877 | #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n)) |
| 878 | #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n)) |
| 879 | #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n)) |
| 880 | #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n)) |
| 881 | #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n)) |
| 882 | #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n)) |
| 883 | #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n)) |
| 884 | #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n)) |
| 885 | #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0) |
| 886 | #define TYPE_TEMPLATE_ARG(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->template_args[n] |
| 887 | |
| 888 | #define TYPE_FIELD_PRIVATE_BITS(thistype) \ |
| 889 | TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits |
| 890 | #define TYPE_FIELD_PROTECTED_BITS(thistype) \ |
| 891 | TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits |
| 892 | #define TYPE_FIELD_IGNORE_BITS(thistype) \ |
| 893 | TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits |
| 894 | #define TYPE_FIELD_VIRTUAL_BITS(thistype) \ |
| 895 | TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits |
| 896 | #define SET_TYPE_FIELD_PRIVATE(thistype, n) \ |
| 897 | B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)) |
| 898 | #define SET_TYPE_FIELD_PROTECTED(thistype, n) \ |
| 899 | B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)) |
| 900 | #define SET_TYPE_FIELD_IGNORE(thistype, n) \ |
| 901 | B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)) |
| 902 | #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \ |
| 903 | B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)) |
| 904 | #define TYPE_FIELD_PRIVATE(thistype, n) \ |
| 905 | (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \ |
| 906 | : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))) |
| 907 | #define TYPE_FIELD_PROTECTED(thistype, n) \ |
| 908 | (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \ |
| 909 | : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))) |
| 910 | #define TYPE_FIELD_IGNORE(thistype, n) \ |
| 911 | (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \ |
| 912 | : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))) |
| 913 | #define TYPE_FIELD_VIRTUAL(thistype, n) \ |
| 914 | (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \ |
| 915 | : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))) |
| 916 | |
| 917 | #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists |
| 918 | #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n] |
| 919 | #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields |
| 920 | #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name |
| 921 | #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length |
| 922 | |
| 923 | #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n] |
| 924 | #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname |
| 925 | #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type |
| 926 | #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type) |
| 927 | #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const) |
| 928 | #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile) |
| 929 | #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private) |
| 930 | #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected) |
| 931 | #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public) |
| 932 | #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static) |
| 933 | #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final) |
| 934 | #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized) |
| 935 | #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native) |
| 936 | #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial) |
| 937 | #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract) |
| 938 | #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub) |
| 939 | #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext) |
| 940 | #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2) |
| 941 | #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1) |
| 942 | #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC) |
| 943 | |
| 944 | #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr) |
| 945 | #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file) |
| 946 | #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line) |
| 947 | |
| 948 | #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) || \ |
| 949 | (TYPE_CODE (thistype) == TYPE_CODE_UNION)) && \ |
| 950 | (TYPE_NFIELDS (thistype) == 0) && \ |
| 951 | (TYPE_CPLUS_SPECIFIC (thistype) && (TYPE_NFN_FIELDS (thistype) == 0)) && \ |
| 952 | (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype))) |
| 953 | |
| 954 | struct builtin_type |
| 955 | { |
| 956 | /* Address/pointer types. */ |
| 957 | |
| 958 | /* `pointer to data' type. Some target platforms use an implicitly |
| 959 | {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */ |
| 960 | struct type *builtin_data_ptr; |
| 961 | |
| 962 | /* `pointer to function (returning void)' type. Harvard |
| 963 | architectures mean that ABI function and code pointers are not |
| 964 | interconvertible. Similarly, since ANSI, C standards have |
| 965 | explicitly said that pointers to functions and pointers to data |
| 966 | are not interconvertible --- that is, you can't cast a function |
| 967 | pointer to void * and back, and expect to get the same value. |
| 968 | However, all function pointer types are interconvertible, so void |
| 969 | (*) () can server as a generic function pointer. */ |
| 970 | struct type *builtin_func_ptr; |
| 971 | |
| 972 | /* The target CPU's address type. This is the ISA address size. */ |
| 973 | struct type *builtin_core_addr; |
| 974 | |
| 975 | |
| 976 | /* Types used for symbols with no debug information. */ |
| 977 | struct type *nodebug_text_symbol; |
| 978 | struct type *nodebug_data_symbol; |
| 979 | struct type *nodebug_unknown_symbol; |
| 980 | struct type *nodebug_tls_symbol; |
| 981 | |
| 982 | |
| 983 | /* Integral types. */ |
| 984 | |
| 985 | /* Implicit size/sign (based on the the architecture's ABI). */ |
| 986 | struct type *builtin_void; |
| 987 | struct type *builtin_char; |
| 988 | struct type *builtin_short; |
| 989 | struct type *builtin_int; |
| 990 | struct type *builtin_long; |
| 991 | struct type *builtin_signed_char; |
| 992 | struct type *builtin_unsigned_char; |
| 993 | struct type *builtin_unsigned_short; |
| 994 | struct type *builtin_unsigned_int; |
| 995 | struct type *builtin_unsigned_long; |
| 996 | struct type *builtin_float; |
| 997 | struct type *builtin_double; |
| 998 | struct type *builtin_long_double; |
| 999 | struct type *builtin_complex; |
| 1000 | struct type *builtin_double_complex; |
| 1001 | struct type *builtin_string; |
| 1002 | struct type *builtin_bool; |
| 1003 | struct type *builtin_long_long; |
| 1004 | struct type *builtin_unsigned_long_long; |
| 1005 | struct type *builtin_decfloat; |
| 1006 | struct type *builtin_decdouble; |
| 1007 | struct type *builtin_declong; |
| 1008 | }; |
| 1009 | |
| 1010 | /* Return the type table for the specified architecture. */ |
| 1011 | extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch); |
| 1012 | |
| 1013 | |
| 1014 | /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0" |
| 1015 | is for when an architecture needs to describe a register that has |
| 1016 | no size. */ |
| 1017 | extern struct type *builtin_type_int0; |
| 1018 | extern struct type *builtin_type_int8; |
| 1019 | extern struct type *builtin_type_uint8; |
| 1020 | extern struct type *builtin_type_int16; |
| 1021 | extern struct type *builtin_type_uint16; |
| 1022 | extern struct type *builtin_type_int32; |
| 1023 | extern struct type *builtin_type_uint32; |
| 1024 | extern struct type *builtin_type_int64; |
| 1025 | extern struct type *builtin_type_uint64; |
| 1026 | extern struct type *builtin_type_int128; |
| 1027 | extern struct type *builtin_type_uint128; |
| 1028 | |
| 1029 | /* Explicit floating-point formats. See "floatformat.h". */ |
| 1030 | extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN]; |
| 1031 | extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN]; |
| 1032 | extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN]; |
| 1033 | extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN]; |
| 1034 | extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN]; |
| 1035 | extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN]; |
| 1036 | extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN]; |
| 1037 | extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN]; |
| 1038 | extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN]; |
| 1039 | extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN]; |
| 1040 | extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN]; |
| 1041 | |
| 1042 | extern struct type *builtin_type_ieee_single; |
| 1043 | extern struct type *builtin_type_ieee_double; |
| 1044 | extern struct type *builtin_type_i387_ext; |
| 1045 | extern struct type *builtin_type_m68881_ext; |
| 1046 | extern struct type *builtin_type_arm_ext; |
| 1047 | extern struct type *builtin_type_ia64_spill; |
| 1048 | extern struct type *builtin_type_ia64_quad; |
| 1049 | |
| 1050 | /* Platform-neutral void type. Never attempt to construct a pointer |
| 1051 | or reference type to this, because those cannot be platform-neutral. |
| 1052 | You must use builtin_type (...)->builtin_void in those cases. */ |
| 1053 | extern struct type *builtin_type_void; |
| 1054 | |
| 1055 | /* Platform-neutral character types. |
| 1056 | We use these for the '/c' print format, because c_char is just a |
| 1057 | one-byte integral type, which languages less laid back than C |
| 1058 | will print as ... well, a one-byte integral type. */ |
| 1059 | extern struct type *builtin_type_true_char; |
| 1060 | extern struct type *builtin_type_true_unsigned_char; |
| 1061 | |
| 1062 | |
| 1063 | /* This type represents a type that was unrecognized in symbol |
| 1064 | read-in. */ |
| 1065 | extern struct type *builtin_type_error; |
| 1066 | |
| 1067 | |
| 1068 | /* RTTI for C++ */ |
| 1069 | /* extern struct type *builtin_type_cxx_typeinfo; */ |
| 1070 | |
| 1071 | /* Maximum and minimum values of built-in types */ |
| 1072 | |
| 1073 | #define MAX_OF_TYPE(t) \ |
| 1074 | (TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \ |
| 1075 | : MAX_OF_SIZE(TYPE_LENGTH(t))) |
| 1076 | |
| 1077 | #define MIN_OF_TYPE(t) \ |
| 1078 | (TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \ |
| 1079 | : MIN_OF_SIZE(TYPE_LENGTH(t))) |
| 1080 | |
| 1081 | /* Allocate space for storing data associated with a particular type. |
| 1082 | We ensure that the space is allocated using the same mechanism that |
| 1083 | was used to allocate the space for the type structure itself. I.E. |
| 1084 | if the type is on an objfile's objfile_obstack, then the space for data |
| 1085 | associated with that type will also be allocated on the objfile_obstack. |
| 1086 | If the type is not associated with any particular objfile (such as |
| 1087 | builtin types), then the data space will be allocated with xmalloc, |
| 1088 | the same as for the type structure. */ |
| 1089 | |
| 1090 | #define TYPE_ALLOC(t,size) \ |
| 1091 | (TYPE_OBJFILE (t) != NULL \ |
| 1092 | ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \ |
| 1093 | : xmalloc (size)) |
| 1094 | |
| 1095 | #define TYPE_ZALLOC(t,size) \ |
| 1096 | (TYPE_OBJFILE (t) != NULL \ |
| 1097 | ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \ |
| 1098 | 0, size) \ |
| 1099 | : xzalloc (size)) |
| 1100 | |
| 1101 | extern struct type *alloc_type (struct objfile *); |
| 1102 | |
| 1103 | extern struct type *init_type (enum type_code, int, int, char *, |
| 1104 | struct objfile *); |
| 1105 | |
| 1106 | /* Helper functions to construct a struct or record type. An |
| 1107 | initially empty type is created using init_composite_type(). |
| 1108 | Fields are then added using append_struct_type_field(). A union |
| 1109 | type has its size set to the largest field. A struct type has each |
| 1110 | field packed against the previous. */ |
| 1111 | |
| 1112 | extern struct type *init_composite_type (char *name, enum type_code code); |
| 1113 | extern void append_composite_type_field (struct type *t, char *name, |
| 1114 | struct type *field); |
| 1115 | extern void append_composite_type_field_aligned (struct type *t, |
| 1116 | char *name, |
| 1117 | struct type *field, |
| 1118 | int alignment); |
| 1119 | |
| 1120 | /* Helper functions to construct a bit flags type. An initially empty |
| 1121 | type is created using init_flag_type(). Flags are then added using |
| 1122 | append_flag_type_flag(). */ |
| 1123 | extern struct type *init_flags_type (char *name, int length); |
| 1124 | extern void append_flags_type_flag (struct type *type, int bitpos, char *name); |
| 1125 | |
| 1126 | extern void make_vector_type (struct type *array_type); |
| 1127 | extern struct type *init_vector_type (struct type *elt_type, int n); |
| 1128 | |
| 1129 | extern struct type *lookup_reference_type (struct type *); |
| 1130 | |
| 1131 | extern struct type *make_reference_type (struct type *, struct type **); |
| 1132 | |
| 1133 | extern struct type *make_cv_type (int, int, struct type *, struct type **); |
| 1134 | |
| 1135 | extern void replace_type (struct type *, struct type *); |
| 1136 | |
| 1137 | extern int address_space_name_to_int (char *); |
| 1138 | |
| 1139 | extern const char *address_space_int_to_name (int); |
| 1140 | |
| 1141 | extern struct type *make_type_with_address_space (struct type *type, |
| 1142 | int space_identifier); |
| 1143 | |
| 1144 | extern struct type *lookup_memberptr_type (struct type *, struct type *); |
| 1145 | |
| 1146 | extern struct type *lookup_methodptr_type (struct type *); |
| 1147 | |
| 1148 | extern void smash_to_method_type (struct type *type, struct type *domain, |
| 1149 | struct type *to_type, struct field *args, |
| 1150 | int nargs, int varargs); |
| 1151 | |
| 1152 | extern void smash_to_memberptr_type (struct type *, struct type *, |
| 1153 | struct type *); |
| 1154 | |
| 1155 | extern struct type *allocate_stub_method (struct type *); |
| 1156 | |
| 1157 | extern char *type_name_no_tag (const struct type *); |
| 1158 | |
| 1159 | extern struct type *lookup_struct_elt_type (struct type *, char *, int); |
| 1160 | |
| 1161 | extern struct type *make_pointer_type (struct type *, struct type **); |
| 1162 | |
| 1163 | extern struct type *lookup_pointer_type (struct type *); |
| 1164 | |
| 1165 | extern struct type *make_function_type (struct type *, struct type **); |
| 1166 | |
| 1167 | extern struct type *lookup_function_type (struct type *); |
| 1168 | |
| 1169 | extern struct type *create_range_type (struct type *, struct type *, int, |
| 1170 | int); |
| 1171 | |
| 1172 | extern struct type *create_array_type (struct type *, struct type *, |
| 1173 | struct type *); |
| 1174 | |
| 1175 | extern struct type *create_string_type (struct type *, struct type *); |
| 1176 | |
| 1177 | extern struct type *create_set_type (struct type *, struct type *); |
| 1178 | |
| 1179 | extern struct type *lookup_unsigned_typename (char *); |
| 1180 | |
| 1181 | extern struct type *lookup_signed_typename (char *); |
| 1182 | |
| 1183 | extern struct type *check_typedef (struct type *); |
| 1184 | |
| 1185 | #define CHECK_TYPEDEF(TYPE) (TYPE) = check_typedef (TYPE) |
| 1186 | |
| 1187 | extern void check_stub_method_group (struct type *, int); |
| 1188 | |
| 1189 | extern char *gdb_mangle_name (struct type *, int, int); |
| 1190 | |
| 1191 | extern struct type *lookup_typename (char *, struct block *, int); |
| 1192 | |
| 1193 | extern struct type *lookup_template_type (char *, struct type *, |
| 1194 | struct block *); |
| 1195 | |
| 1196 | extern int get_vptr_fieldno (struct type *, struct type **); |
| 1197 | |
| 1198 | extern int get_destructor_fn_field (struct type *, int *, int *); |
| 1199 | |
| 1200 | extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *); |
| 1201 | |
| 1202 | extern int is_ancestor (struct type *, struct type *); |
| 1203 | |
| 1204 | /* Overload resolution */ |
| 1205 | |
| 1206 | #define LENGTH_MATCH(bv) ((bv)->rank[0]) |
| 1207 | |
| 1208 | /* Badness if parameter list length doesn't match arg list length */ |
| 1209 | #define LENGTH_MISMATCH_BADNESS 100 |
| 1210 | /* Dummy badness value for nonexistent parameter positions */ |
| 1211 | #define TOO_FEW_PARAMS_BADNESS 100 |
| 1212 | /* Badness if no conversion among types */ |
| 1213 | #define INCOMPATIBLE_TYPE_BADNESS 100 |
| 1214 | |
| 1215 | /* Badness of integral promotion */ |
| 1216 | #define INTEGER_PROMOTION_BADNESS 1 |
| 1217 | /* Badness of floating promotion */ |
| 1218 | #define FLOAT_PROMOTION_BADNESS 1 |
| 1219 | /* Badness of integral conversion */ |
| 1220 | #define INTEGER_CONVERSION_BADNESS 2 |
| 1221 | /* Badness of floating conversion */ |
| 1222 | #define FLOAT_CONVERSION_BADNESS 2 |
| 1223 | /* Badness of integer<->floating conversions */ |
| 1224 | #define INT_FLOAT_CONVERSION_BADNESS 2 |
| 1225 | /* Badness of converting to a boolean */ |
| 1226 | #define BOOLEAN_CONVERSION_BADNESS 2 |
| 1227 | /* Badness of pointer conversion */ |
| 1228 | #define POINTER_CONVERSION_BADNESS 2 |
| 1229 | /* Badness of conversion of pointer to void pointer */ |
| 1230 | #define VOID_PTR_CONVERSION_BADNESS 2 |
| 1231 | /* Badness of converting derived to base class */ |
| 1232 | #define BASE_CONVERSION_BADNESS 2 |
| 1233 | /* Badness of converting from non-reference to reference */ |
| 1234 | #define REFERENCE_CONVERSION_BADNESS 2 |
| 1235 | |
| 1236 | /* Non-standard conversions allowed by the debugger */ |
| 1237 | /* Converting a pointer to an int is usually OK */ |
| 1238 | #define NS_POINTER_CONVERSION_BADNESS 10 |
| 1239 | |
| 1240 | |
| 1241 | extern int compare_badness (struct badness_vector *, struct badness_vector *); |
| 1242 | |
| 1243 | extern struct badness_vector *rank_function (struct type **, int, |
| 1244 | struct type **, int); |
| 1245 | |
| 1246 | extern int rank_one_type (struct type *, struct type *); |
| 1247 | |
| 1248 | extern void recursive_dump_type (struct type *, int); |
| 1249 | |
| 1250 | extern int field_is_static (struct field *); |
| 1251 | |
| 1252 | /* printcmd.c */ |
| 1253 | |
| 1254 | extern void print_scalar_formatted (const void *, struct type *, |
| 1255 | const struct value_print_options *, |
| 1256 | int, struct ui_file *); |
| 1257 | |
| 1258 | extern int can_dereference (struct type *); |
| 1259 | |
| 1260 | extern int is_integral_type (struct type *); |
| 1261 | |
| 1262 | extern void maintenance_print_type (char *, int); |
| 1263 | |
| 1264 | extern htab_t create_copied_types_hash (struct objfile *objfile); |
| 1265 | |
| 1266 | extern struct type *copy_type_recursive (struct objfile *objfile, |
| 1267 | struct type *type, |
| 1268 | htab_t copied_types); |
| 1269 | |
| 1270 | extern struct type *copy_type (const struct type *type); |
| 1271 | |
| 1272 | #endif /* GDBTYPES_H */ |