1 /* Defs for interface to demanglers. 2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 3 2003, 2004 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, 18 Boston, MA 02111-1307, USA. */ 19 20 21 #if !defined (DEMANGLE_H) 22 #define DEMANGLE_H 23 24 #include "libiberty.h" 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif /* __cplusplus */ 29 30 /* Options passed to cplus_demangle (in 2nd parameter). */ 31 32 #define DMGL_NO_OPTS 0 /* For readability... */ 33 #define DMGL_PARAMS (1 << 0) /* Include function args */ 34 #define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ 35 #define DMGL_JAVA (1 << 2) /* Demangle as Java rather than C++. */ 36 #define DMGL_VERBOSE (1 << 3) /* Include implementation details. */ 37 #define DMGL_TYPES (1 << 4) /* Also try to demangle type encodings. */ 38 39 #define DMGL_AUTO (1 << 8) 40 #define DMGL_GNU (1 << 9) 41 #define DMGL_LUCID (1 << 10) 42 #define DMGL_ARM (1 << 11) 43 #define DMGL_HP (1 << 12) /* For the HP aCC compiler; 44 same as ARM except for 45 template arguments, etc. */ 46 #define DMGL_EDG (1 << 13) 47 #define DMGL_GNU_V3 (1 << 14) 48 #define DMGL_GNAT (1 << 15) 49 50 /* If none of these are set, use 'current_demangling_style' as the default. */ 51 #define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU|DMGL_LUCID|DMGL_ARM|DMGL_HP|DMGL_EDG|DMGL_GNU_V3|DMGL_JAVA|DMGL_GNAT) 52 53 /* Enumeration of possible demangling styles. 54 55 Lucid and ARM styles are still kept logically distinct, even though 56 they now both behave identically. The resulting style is actual the 57 union of both. I.E. either style recognizes both "__pt__" and "__rf__" 58 for operator "->", even though the first is lucid style and the second 59 is ARM style. (FIXME?) */ 60 61 extern enum demangling_styles 62 { 63 no_demangling = -1, 64 unknown_demangling = 0, 65 auto_demangling = DMGL_AUTO, 66 gnu_demangling = DMGL_GNU, 67 lucid_demangling = DMGL_LUCID, 68 arm_demangling = DMGL_ARM, 69 hp_demangling = DMGL_HP, 70 edg_demangling = DMGL_EDG, 71 gnu_v3_demangling = DMGL_GNU_V3, 72 java_demangling = DMGL_JAVA, 73 gnat_demangling = DMGL_GNAT 74 } current_demangling_style; 75 76 /* Define string names for the various demangling styles. */ 77 78 #define NO_DEMANGLING_STYLE_STRING "none" 79 #define AUTO_DEMANGLING_STYLE_STRING "auto" 80 #define GNU_DEMANGLING_STYLE_STRING "gnu" 81 #define LUCID_DEMANGLING_STYLE_STRING "lucid" 82 #define ARM_DEMANGLING_STYLE_STRING "arm" 83 #define HP_DEMANGLING_STYLE_STRING "hp" 84 #define EDG_DEMANGLING_STYLE_STRING "edg" 85 #define GNU_V3_DEMANGLING_STYLE_STRING "gnu-v3" 86 #define JAVA_DEMANGLING_STYLE_STRING "java" 87 #define GNAT_DEMANGLING_STYLE_STRING "gnat" 88 89 /* Some macros to test what demangling style is active. */ 90 91 #define CURRENT_DEMANGLING_STYLE current_demangling_style 92 #define AUTO_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_AUTO) 93 #define GNU_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU) 94 #define LUCID_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_LUCID) 95 #define ARM_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_ARM) 96 #define HP_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_HP) 97 #define EDG_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_EDG) 98 #define GNU_V3_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU_V3) 99 #define JAVA_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_JAVA) 100 #define GNAT_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNAT) 101 102 /* Provide information about the available demangle styles. This code is 103 pulled from gdb into libiberty because it is useful to binutils also. */ 104 105 extern const struct demangler_engine 106 { 107 const char *const demangling_style_name; 108 const enum demangling_styles demangling_style; 109 const char *const demangling_style_doc; 110 } libiberty_demanglers[]; 111 112 extern char * 113 cplus_demangle PARAMS ((const char *mangled, int options)); 114 115 extern int 116 cplus_demangle_opname PARAMS ((const char *opname, char *result, int options)); 117 118 extern const char * 119 cplus_mangle_opname PARAMS ((const char *opname, int options)); 120 121 /* Note: This sets global state. FIXME if you care about multi-threading. */ 122 123 extern void 124 set_cplus_marker_for_demangling PARAMS ((int ch)); 125 126 extern enum demangling_styles 127 cplus_demangle_set_style PARAMS ((enum demangling_styles style)); 128 129 extern enum demangling_styles 130 cplus_demangle_name_to_style PARAMS ((const char *name)); 131 132 /* V3 ABI demangling entry points, defined in cp-demangle.c. */ 133 extern char* 134 cplus_demangle_v3 PARAMS ((const char* mangled, int options)); 135 136 extern char* 137 java_demangle_v3 PARAMS ((const char* mangled)); 138 139 140 enum gnu_v3_ctor_kinds { 141 gnu_v3_complete_object_ctor = 1, 142 gnu_v3_base_object_ctor, 143 gnu_v3_complete_object_allocating_ctor 144 }; 145 146 /* Return non-zero iff NAME is the mangled form of a constructor name 147 in the G++ V3 ABI demangling style. Specifically, return an `enum 148 gnu_v3_ctor_kinds' value indicating what kind of constructor 149 it is. */ 150 extern enum gnu_v3_ctor_kinds 151 is_gnu_v3_mangled_ctor PARAMS ((const char *name)); 152 153 154 enum gnu_v3_dtor_kinds { 155 gnu_v3_deleting_dtor = 1, 156 gnu_v3_complete_object_dtor, 157 gnu_v3_base_object_dtor 158 }; 159 160 /* Return non-zero iff NAME is the mangled form of a destructor name 161 in the G++ V3 ABI demangling style. Specifically, return an `enum 162 gnu_v3_dtor_kinds' value, indicating what kind of destructor 163 it is. */ 164 extern enum gnu_v3_dtor_kinds 165 is_gnu_v3_mangled_dtor PARAMS ((const char *name)); 166 167 /* The V3 demangler works in two passes. The first pass builds a tree 168 representation of the mangled name, and the second pass turns the 169 tree representation into a demangled string. Here we define an 170 interface to permit a caller to build their own tree 171 representation, which they can pass to the demangler to get a 172 demangled string. This can be used to canonicalize user input into 173 something which the demangler might output. It could also be used 174 by other demanglers in the future. */ 175 176 /* These are the component types which may be found in the tree. Many 177 component types have one or two subtrees, referred to as left and 178 right (a component type with only one subtree puts it in the left 179 subtree). */ 180 181 enum demangle_component_type 182 { 183 /* A name, with a length and a pointer to a string. */ 184 DEMANGLE_COMPONENT_NAME, 185 /* A qualified name. The left subtree is a class or namespace or 186 some such thing, and the right subtree is a name qualified by 187 that class. */ 188 DEMANGLE_COMPONENT_QUAL_NAME, 189 /* A local name. The left subtree describes a function, and the 190 right subtree is a name which is local to that function. */ 191 DEMANGLE_COMPONENT_LOCAL_NAME, 192 /* A typed name. The left subtree is a name, and the right subtree 193 describes that name as a function. */ 194 DEMANGLE_COMPONENT_TYPED_NAME, 195 /* A template. The left subtree is a template name, and the right 196 subtree is a template argument list. */ 197 DEMANGLE_COMPONENT_TEMPLATE, 198 /* A template parameter. This holds a number, which is the template 199 parameter index. */ 200 DEMANGLE_COMPONENT_TEMPLATE_PARAM, 201 /* A constructor. This holds a name and the kind of 202 constructor. */ 203 DEMANGLE_COMPONENT_CTOR, 204 /* A destructor. This holds a name and the kind of destructor. */ 205 DEMANGLE_COMPONENT_DTOR, 206 /* A vtable. This has one subtree, the type for which this is a 207 vtable. */ 208 DEMANGLE_COMPONENT_VTABLE, 209 /* A VTT structure. This has one subtree, the type for which this 210 is a VTT. */ 211 DEMANGLE_COMPONENT_VTT, 212 /* A construction vtable. The left subtree is the type for which 213 this is a vtable, and the right subtree is the derived type for 214 which this vtable is built. */ 215 DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE, 216 /* A typeinfo structure. This has one subtree, the type for which 217 this is the tpeinfo structure. */ 218 DEMANGLE_COMPONENT_TYPEINFO, 219 /* A typeinfo name. This has one subtree, the type for which this 220 is the typeinfo name. */ 221 DEMANGLE_COMPONENT_TYPEINFO_NAME, 222 /* A typeinfo function. This has one subtree, the type for which 223 this is the tpyeinfo function. */ 224 DEMANGLE_COMPONENT_TYPEINFO_FN, 225 /* A thunk. This has one subtree, the name for which this is a 226 thunk. */ 227 DEMANGLE_COMPONENT_THUNK, 228 /* A virtual thunk. This has one subtree, the name for which this 229 is a virtual thunk. */ 230 DEMANGLE_COMPONENT_VIRTUAL_THUNK, 231 /* A covariant thunk. This has one subtree, the name for which this 232 is a covariant thunk. */ 233 DEMANGLE_COMPONENT_COVARIANT_THUNK, 234 /* A Java class. This has one subtree, the type. */ 235 DEMANGLE_COMPONENT_JAVA_CLASS, 236 /* A guard variable. This has one subtree, the name for which this 237 is a guard variable. */ 238 DEMANGLE_COMPONENT_GUARD, 239 /* A reference temporary. This has one subtree, the name for which 240 this is a temporary. */ 241 DEMANGLE_COMPONENT_REFTEMP, 242 /* A standard substitution. This holds the name of the 243 substitution. */ 244 DEMANGLE_COMPONENT_SUB_STD, 245 /* The restrict qualifier. The one subtree is the type which is 246 being qualified. */ 247 DEMANGLE_COMPONENT_RESTRICT, 248 /* The volatile qualifier. The one subtree is the type which is 249 being qualified. */ 250 DEMANGLE_COMPONENT_VOLATILE, 251 /* The const qualifier. The one subtree is the type which is being 252 qualified. */ 253 DEMANGLE_COMPONENT_CONST, 254 /* The restrict qualifier modifying a member function. The one 255 subtree is the type which is being qualified. */ 256 DEMANGLE_COMPONENT_RESTRICT_THIS, 257 /* The volatile qualifier modifying a member function. The one 258 subtree is the type which is being qualified. */ 259 DEMANGLE_COMPONENT_VOLATILE_THIS, 260 /* The const qualifier modifying a member function. The one subtree 261 is the type which is being qualified. */ 262 DEMANGLE_COMPONENT_CONST_THIS, 263 /* A vendor qualifier. The left subtree is the type which is being 264 qualified, and the right subtree is the name of the 265 qualifier. */ 266 DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL, 267 /* A pointer. The one subtree is the type which is being pointed 268 to. */ 269 DEMANGLE_COMPONENT_POINTER, 270 /* A reference. The one subtree is the type which is being 271 referenced. */ 272 DEMANGLE_COMPONENT_REFERENCE, 273 /* A complex type. The one subtree is the base type. */ 274 DEMANGLE_COMPONENT_COMPLEX, 275 /* An imaginary type. The one subtree is the base type. */ 276 DEMANGLE_COMPONENT_IMAGINARY, 277 /* A builtin type. This holds the builtin type information. */ 278 DEMANGLE_COMPONENT_BUILTIN_TYPE, 279 /* A vendor's builtin type. This holds the name of the type. */ 280 DEMANGLE_COMPONENT_VENDOR_TYPE, 281 /* A function type. The left subtree is the return type. The right 282 subtree is a list of ARGLIST nodes. Either or both may be 283 NULL. */ 284 DEMANGLE_COMPONENT_FUNCTION_TYPE, 285 /* An array type. The left subtree is the dimension, which may be 286 NULL, or a string (represented as DEMANGLE_COMPONENT_NAME), or an 287 expression. The right subtree is the element type. */ 288 DEMANGLE_COMPONENT_ARRAY_TYPE, 289 /* A pointer to member type. The left subtree is the class type, 290 and the right subtree is the member type. CV-qualifiers appear 291 on the latter. */ 292 DEMANGLE_COMPONENT_PTRMEM_TYPE, 293 /* An argument list. The left subtree is the current argument, and 294 the right subtree is either NULL or another ARGLIST node. */ 295 DEMANGLE_COMPONENT_ARGLIST, 296 /* A template argument list. The left subtree is the current 297 template argument, and the right subtree is either NULL or 298 another TEMPLATE_ARGLIST node. */ 299 DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, 300 /* An operator. This holds information about a standard 301 operator. */ 302 DEMANGLE_COMPONENT_OPERATOR, 303 /* An extended operator. This holds the number of arguments, and 304 the name of the extended operator. */ 305 DEMANGLE_COMPONENT_EXTENDED_OPERATOR, 306 /* A typecast, represented as a unary operator. The one subtree is 307 the type to which the argument should be cast. */ 308 DEMANGLE_COMPONENT_CAST, 309 /* A unary expression. The left subtree is the operator, and the 310 right subtree is the single argument. */ 311 DEMANGLE_COMPONENT_UNARY, 312 /* A binary expression. The left subtree is the operator, and the 313 right subtree is a BINARY_ARGS. */ 314 DEMANGLE_COMPONENT_BINARY, 315 /* Arguments to a binary expression. The left subtree is the first 316 argument, and the right subtree is the second argument. */ 317 DEMANGLE_COMPONENT_BINARY_ARGS, 318 /* A trinary expression. The left subtree is the operator, and the 319 right subtree is a TRINARY_ARG1. */ 320 DEMANGLE_COMPONENT_TRINARY, 321 /* Arguments to a trinary expression. The left subtree is the first 322 argument, and the right subtree is a TRINARY_ARG2. */ 323 DEMANGLE_COMPONENT_TRINARY_ARG1, 324 /* More arguments to a trinary expression. The left subtree is the 325 second argument, and the right subtree is the third argument. */ 326 DEMANGLE_COMPONENT_TRINARY_ARG2, 327 /* A literal. The left subtree is the type, and the right subtree 328 is the value, represented as a DEMANGLE_COMPONENT_NAME. */ 329 DEMANGLE_COMPONENT_LITERAL, 330 /* A negative literal. Like LITERAL, but the value is negated. 331 This is a minor hack: the NAME used for LITERAL points directly 332 to the mangled string, but since negative numbers are mangled 333 using 'n' instead of '-', we want a way to indicate a negative 334 number which involves neither modifying the mangled string nor 335 allocating a new copy of the literal in memory. */ 336 DEMANGLE_COMPONENT_LITERAL_NEG 337 }; 338 339 /* Types which are only used internally. */ 340 341 struct demangle_operator_info; 342 struct demangle_builtin_type_info; 343 344 /* A node in the tree representation is an instance of a struct 345 demangle_component. Note that the field names of the struct are 346 not well protected against macros defined by the file including 347 this one. We can fix this if it ever becomes a problem. */ 348 349 struct demangle_component 350 { 351 /* The type of this component. */ 352 enum demangle_component_type type; 353 354 union 355 { 356 /* For DEMANGLE_COMPONENT_NAME. */ 357 struct 358 { 359 /* A pointer to the name (which need not NULL terminated) and 360 its length. */ 361 const char *s; 362 int len; 363 } s_name; 364 365 /* For DEMANGLE_COMPONENT_OPERATOR. */ 366 struct 367 { 368 /* Operator. */ 369 const struct demangle_operator_info *op; 370 } s_operator; 371 372 /* For DEMANGLE_COMPONENT_EXTENDED_OPERATOR. */ 373 struct 374 { 375 /* Number of arguments. */ 376 int args; 377 /* Name. */ 378 struct demangle_component *name; 379 } s_extended_operator; 380 381 /* For DEMANGLE_COMPONENT_CTOR. */ 382 struct 383 { 384 /* Kind of constructor. */ 385 enum gnu_v3_ctor_kinds kind; 386 /* Name. */ 387 struct demangle_component *name; 388 } s_ctor; 389 390 /* For DEMANGLE_COMPONENT_DTOR. */ 391 struct 392 { 393 /* Kind of destructor. */ 394 enum gnu_v3_dtor_kinds kind; 395 /* Name. */ 396 struct demangle_component *name; 397 } s_dtor; 398 399 /* For DEMANGLE_COMPONENT_BUILTIN_TYPE. */ 400 struct 401 { 402 /* Builtin type. */ 403 const struct demangle_builtin_type_info *type; 404 } s_builtin; 405 406 /* For DEMANGLE_COMPONENT_SUB_STD. */ 407 struct 408 { 409 /* Standard substitution string. */ 410 const char* string; 411 /* Length of string. */ 412 int len; 413 } s_string; 414 415 /* For DEMANGLE_COMPONENT_TEMPLATE_PARAM. */ 416 struct 417 { 418 /* Template parameter index. */ 419 long number; 420 } s_number; 421 422 /* For other types. */ 423 struct 424 { 425 /* Left (or only) subtree. */ 426 struct demangle_component *left; 427 /* Right subtree. */ 428 struct demangle_component *right; 429 } s_binary; 430 431 } u; 432 }; 433 434 /* People building mangled trees are expected to allocate instances of 435 struct demangle_component themselves. They can then call one of 436 the following functions to fill them in. */ 437 438 /* Fill in most component types with a left subtree and a right 439 subtree. Returns non-zero on success, zero on failure, such as an 440 unrecognized or inappropriate component type. */ 441 442 extern int 443 cplus_demangle_fill_component PARAMS ((struct demangle_component *fill, 444 enum demangle_component_type, 445 struct demangle_component *left, 446 struct demangle_component *right)); 447 448 /* Fill in a DEMANGLE_COMPONENT_NAME. Returns non-zero on success, 449 zero for bad arguments. */ 450 451 extern int 452 cplus_demangle_fill_name PARAMS ((struct demangle_component *fill, 453 const char *, int)); 454 455 /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE, using the name of the 456 builtin type (e.g., "int", etc.). Returns non-zero on success, 457 zero if the type is not recognized. */ 458 459 extern int 460 cplus_demangle_fill_builtin_type PARAMS ((struct demangle_component *fill, 461 const char *typename)); 462 463 /* Fill in a DEMANGLE_COMPONENT_OPERATOR, using the name of the 464 operator and the number of arguments which it takes (the latter is 465 used to disambiguate operators which can be both binary and unary, 466 such as '-'). Returns non-zero on success, zero if the operator is 467 not recognized. */ 468 469 extern int 470 cplus_demangle_fill_operator PARAMS ((struct demangle_component *fill, 471 const char *opname, int args)); 472 473 /* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR, providing the 474 number of arguments and the name. Returns non-zero on success, 475 zero for bad arguments. */ 476 477 extern int 478 cplus_demangle_fill_extended_operator PARAMS ((struct demangle_component *fill, 479 int numargs, 480 struct demangle_component *nm)); 481 482 /* Fill in a DEMANGLE_COMPONENT_CTOR. Returns non-zero on success, 483 zero for bad arguments. */ 484 485 extern int 486 cplus_demangle_fill_ctor PARAMS ((struct demangle_component *fill, 487 enum gnu_v3_ctor_kinds kind, 488 struct demangle_component *name)); 489 490 /* Fill in a DEMANGLE_COMPONENT_DTOR. Returns non-zero on success, 491 zero for bad arguments. */ 492 493 extern int 494 cplus_demangle_fill_dtor PARAMS ((struct demangle_component *fill, 495 enum gnu_v3_dtor_kinds kind, 496 struct demangle_component *name)); 497 498 /* This function translates a mangled name into a struct 499 demangle_component tree. The first argument is the mangled name. 500 The second argument is DMGL_* options. This returns a pointer to a 501 tree on success, or NULL on failure. On success, the third 502 argument is set to a block of memory allocated by malloc. This 503 block should be passed to free when the tree is no longer 504 needed. */ 505 506 extern struct demangle_component * 507 cplus_demangle_v3_components PARAMS ((const char *mangled, 508 int options, 509 void **mem)); 510 511 /* This function takes a struct demangle_component tree and returns 512 the corresponding demangled string. The first argument is DMGL_* 513 options. The second is the tree to demangle. The third is a guess 514 at the length of the demangled string, used to initially allocate 515 the return buffer. The fourth is a pointer to a size_t. On 516 success, this function returns a buffer allocated by malloc(), and 517 sets the size_t pointed to by the fourth argument to the size of 518 the allocated buffer (not the length of the returned string). On 519 failure, this function returns NULL, and sets the size_t pointed to 520 by the fourth argument to 0 for an invalid tree, or to 1 for a 521 memory allocation error. */ 522 523 extern char * 524 cplus_demangle_print PARAMS ((int options, 525 const struct demangle_component *tree, 526 int estimated_length, 527 size_t *p_allocated_size)); 528 529 #ifdef __cplusplus 530 } 531 #endif /* __cplusplus */ 532 533 #endif /* DEMANGLE_H */ 534