dlls/dbghelp/type.c

   1 /*
   2  * File types.c - management of types (hierarchical tree)
   3  *
   4  * Copyright (C) 1997, Eric Youngdale.
   5  *               2004, Eric Pouech.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  * Note: This really doesn't do much at the moment, but it forms the framework
  22  * upon which full support for datatype handling will eventually be built.
  23  */
  24
  25 #define NONAMELESSUNION
  26
  27 #include "config.h"
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <assert.h>
  31
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "winnls.h"
  35 #include "wine/debug.h"
  36 #include "dbghelp_private.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  39 WINE_DECLARE_DEBUG_CHANNEL(dbghelp_symt);
  40
  41 static const char* symt_get_tag_str(DWORD tag)
  42 {
  43     switch (tag)
  44     {
  45     case SymTagNull:                    return "SymTagNull";
  46     case SymTagExe:                     return "SymTagExe";
  47     case SymTagCompiland:               return "SymTagCompiland";
  48     case SymTagCompilandDetails:        return "SymTagCompilandDetails";
  49     case SymTagCompilandEnv:            return "SymTagCompilandEnv";
  50     case SymTagFunction:                return "SymTagFunction";
  51     case SymTagBlock:                   return "SymTagBlock";
  52     case SymTagData:                    return "SymTagData";
  53     case SymTagAnnotation:              return "SymTagAnnotation";
  54     case SymTagLabel:                   return "SymTagLabel";
  55     case SymTagPublicSymbol:            return "SymTagPublicSymbol";
  56     case SymTagUDT:                     return "SymTagUDT";
  57     case SymTagEnum:                    return "SymTagEnum";
  58     case SymTagFunctionType:            return "SymTagFunctionType";
  59     case SymTagPointerType:             return "SymTagPointerType";
  60     case SymTagArrayType:               return "SymTagArrayType";
  61     case SymTagBaseType:                return "SymTagBaseType";
  62     case SymTagTypedef:                 return "SymTagTypedef,";
  63     case SymTagBaseClass:               return "SymTagBaseClass";
  64     case SymTagFriend:                  return "SymTagFriend";
  65     case SymTagFunctionArgType:         return "SymTagFunctionArgType,";
  66     case SymTagFuncDebugStart:          return "SymTagFuncDebugStart,";
  67     case SymTagFuncDebugEnd:            return "SymTagFuncDebugEnd";
  68     case SymTagUsingNamespace:          return "SymTagUsingNamespace,";
  69     case SymTagVTableShape:             return "SymTagVTableShape";
  70     case SymTagVTable:                  return "SymTagVTable";
  71     case SymTagCustom:                  return "SymTagCustom";
  72     case SymTagThunk:                   return "SymTagThunk";
  73     case SymTagCustomType:              return "SymTagCustomType";
  74     case SymTagManagedType:             return "SymTagManagedType";
  75     case SymTagDimension:               return "SymTagDimension";
  76     default:                            return "---";
  77     }
  78 }
  79
  80 const char* symt_get_name(const struct symt* sym)
  81 {
  82     switch (sym->tag)
  83     {
  84     /* lexical tree */
  85     case SymTagData:            return ((const struct symt_data*)sym)->hash_elt.name;
  86     case SymTagFunction:        return ((const struct symt_function*)sym)->hash_elt.name;
  87     case SymTagPublicSymbol:    return ((const struct symt_public*)sym)->hash_elt.name;
  88     case SymTagBaseType:        return ((const struct symt_basic*)sym)->hash_elt.name;
  89     case SymTagLabel:           return ((const struct symt_hierarchy_point*)sym)->hash_elt.name;
  90     case SymTagThunk:           return ((const struct symt_thunk*)sym)->hash_elt.name;
  91     /* hierarchy tree */
  92     case SymTagEnum:            return ((const struct symt_enum*)sym)->name;
  93     case SymTagTypedef:         return ((const struct symt_typedef*)sym)->hash_elt.name;
  94     case SymTagUDT:             return ((const struct symt_udt*)sym)->hash_elt.name;
  95     default:
  96         FIXME("Unsupported sym-tag %s\n", symt_get_tag_str(sym->tag));
  97         /* fall through */
  98     case SymTagArrayType:
  99     case SymTagPointerType:
 100     case SymTagFunctionType:
 101         return NULL;
 102     }
 103 }
 104
 105 static struct symt* symt_find_type_by_name(const struct module* module,
 106                                            enum SymTagEnum sym_tag,
 107                                            const char* typename)
 108 {
 109     void*                       ptr;
 110     struct symt_ht*             type;
 111     struct hash_table_iter      hti;
 112
 113     assert(typename);
 114     assert(module);
 115
 116     hash_table_iter_init(&module->ht_types, &hti, typename);
 117     while ((ptr = hash_table_iter_up(&hti)))
 118     {
 119         type = GET_ENTRY(ptr, struct symt_ht, hash_elt);
 120
 121         if ((sym_tag == SymTagNull || type->symt.tag == sym_tag) &&
 122             type->hash_elt.name && !strcmp(type->hash_elt.name, typename))
 123             return &type->symt;
 124     }
 125     SetLastError(ERROR_INVALID_NAME); /* FIXME ?? */
 126     return NULL;
 127 }
 128
 129 static void symt_add_type(struct module* module, struct symt* symt)
 130 {
 131     struct symt**       p;
 132     p = vector_add(&module->vtypes, &module->pool);
 133     assert(p);
 134     *p = symt;
 135 }
 136
 137 struct symt_basic* symt_new_basic(struct module* module, enum BasicType bt,
 138                                   const char* typename, unsigned size)
 139 {
 140     struct symt_basic*          sym;
 141
 142     if (typename)
 143     {
 144         sym = (struct symt_basic*)symt_find_type_by_name(module, SymTagBaseType,
 145                                                          typename);
 146         if (sym && sym->bt == bt && sym->size == size)
 147             return sym;
 148     }
 149     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 150     {
 151         sym->symt.tag = SymTagBaseType;
 152         if (typename)
 153         {
 154             sym->hash_elt.name = pool_strdup(&module->pool, typename);
 155             hash_table_add(&module->ht_types, &sym->hash_elt);
 156         } else sym->hash_elt.name = NULL;
 157         sym->bt = bt;
 158         sym->size = size;
 159         symt_add_type(module, &sym->symt);
 160     }
 161     return sym;
 162 }
 163
 164 struct symt_udt* symt_new_udt(struct module* module, const char* typename,
 165                               unsigned size, enum UdtKind kind)
 166 {
 167     struct symt_udt*            sym;
 168
 169     TRACE_(dbghelp_symt)("Adding udt %s:%s\n",
 170                          debugstr_w(module->module.ModuleName), typename);
 171     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 172     {
 173         sym->symt.tag = SymTagUDT;
 174         sym->kind     = kind;
 175         sym->size     = size;
 176         if (typename)
 177         {
 178             sym->hash_elt.name = pool_strdup(&module->pool, typename);
 179             hash_table_add(&module->ht_types, &sym->hash_elt);
 180         } else sym->hash_elt.name = NULL;
 181         vector_init(&sym->vchildren, sizeof(struct symt*), 8);
 182         symt_add_type(module, &sym->symt);
 183     }
 184     return sym;
 185 }
 186
 187 BOOL symt_set_udt_size(struct module* module, struct symt_udt* udt, unsigned size)
 188 {
 189     assert(udt->symt.tag == SymTagUDT);
 190     if (vector_length(&udt->vchildren) != 0)
 191     {
 192         if (udt->size != size)
 193             FIXME_(dbghelp_symt)("Changing size for %s from %u to %u\n",
 194                                  udt->hash_elt.name, udt->size, size);
 195         return TRUE;
 196     }
 197     udt->size = size;
 198     return TRUE;
 199 }
 200
 201 /******************************************************************
 202  *              symt_add_udt_element
 203  *
 204  * add an element to a udt (struct, class, union)
 205  * the size & offset parameters are expressed in bits (not bytes) so that
 206  * we can mix in the single call bytes aligned elements (regular fields) and
 207  * the others (bit fields)
 208  */
 209 BOOL symt_add_udt_element(struct module* module, struct symt_udt* udt_type,
 210                           const char* name, struct symt* elt_type,
 211                           unsigned offset, unsigned size)
 212 {
 213     struct symt_data*   m;
 214     struct symt**       p;
 215
 216     assert(udt_type->symt.tag == SymTagUDT);
 217
 218     TRACE_(dbghelp_symt)("Adding %s to UDT %s\n", name, udt_type->hash_elt.name);
 219     if (name)
 220     {
 221         unsigned int    i;
 222         for (i=0; i<vector_length(&udt_type->vchildren); i++)
 223         {
 224             m = *(struct symt_data**)vector_at(&udt_type->vchildren, i);
 225             assert(m);
 226             assert(m->symt.tag == SymTagData);
 227             if (strcmp(m->hash_elt.name, name) == 0)
 228                 return TRUE;
 229         }
 230     }
 231
 232     if ((m = pool_alloc(&module->pool, sizeof(*m))) == NULL) return FALSE;
 233     memset(m, 0, sizeof(*m));
 234     m->symt.tag      = SymTagData;
 235     m->hash_elt.name = name ? pool_strdup(&module->pool, name) : "";
 236     m->hash_elt.next = NULL;
 237
 238     m->kind            = DataIsMember;
 239     m->container       = &udt_type->symt;
 240     m->type            = elt_type;
 241     m->u.member.offset = offset;
 242     m->u.member.length = ((offset & 7) || (size & 7)) ? size : 0;
 243     p = vector_add(&udt_type->vchildren, &module->pool);
 244     *p = &m->symt;
 245
 246     return TRUE;
 247 }
 248
 249 struct symt_enum* symt_new_enum(struct module* module, const char* typename,
 250                                 struct symt* basetype)
 251 {
 252     struct symt_enum*   sym;
 253
 254     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 255     {
 256         sym->symt.tag            = SymTagEnum;
 257         sym->name = (typename) ? pool_strdup(&module->pool, typename) : NULL;
 258         sym->base_type           = basetype;
 259         vector_init(&sym->vchildren, sizeof(struct symt*), 8);
 260     }
 261     return sym;
 262 }
 263
 264 BOOL symt_add_enum_element(struct module* module, struct symt_enum* enum_type,
 265                            const char* name, int value)
 266 {
 267     struct symt_data*   e;
 268     struct symt**       p;
 269
 270     assert(enum_type->symt.tag == SymTagEnum);
 271     e = pool_alloc(&module->pool, sizeof(*e));
 272     if (e == NULL) return FALSE;
 273
 274     e->symt.tag = SymTagData;
 275     e->hash_elt.name = pool_strdup(&module->pool, name);
 276     e->hash_elt.next = NULL;
 277     e->kind = DataIsConstant;
 278     e->container = &enum_type->symt;
 279     e->type = enum_type->base_type;
 280     e->u.value.n1.n2.vt = VT_I4;
 281     e->u.value.n1.n2.n3.lVal = value;
 282
 283     p = vector_add(&enum_type->vchildren, &module->pool);
 284     if (!p) return FALSE; /* FIXME we leak e */
 285     *p = &e->symt;
 286
 287     return TRUE;
 288 }
 289
 290 struct symt_array* symt_new_array(struct module* module, int min, int max,
 291                                   struct symt* base, struct symt* index)
 292 {
 293     struct symt_array*  sym;
 294
 295     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 296     {
 297         sym->symt.tag   = SymTagArrayType;
 298         sym->start      = min;
 299         sym->end        = max;
 300         sym->base_type  = base;
 301         sym->index_type = index;
 302         symt_add_type(module, &sym->symt);
 303     }
 304     return sym;
 305 }
 306
 307 static inline DWORD symt_array_count(struct module* module, const struct symt_array* array)
 308 {
 309     if (array->end < 0)
 310     {
 311         DWORD64 elem_size;
 312         /* One could want to also set the array->end field in array, but we won't do it
 313          * as long as all the get_type() helpers use const objects
 314          */
 315         if (symt_get_info(module, array->base_type, TI_GET_LENGTH, &elem_size) && elem_size)
 316             return -array->end / (DWORD)elem_size;
 317         return 0;
 318     }
 319     return array->end - array->start + 1;
 320 }
 321
 322 struct symt_function_signature* symt_new_function_signature(struct module* module,
 323                                                             struct symt* ret_type,
 324                                                             enum CV_call_e call_conv)
 325 {
 326     struct symt_function_signature*     sym;
 327
 328     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 329     {
 330         sym->symt.tag = SymTagFunctionType;
 331         sym->rettype  = ret_type;
 332         vector_init(&sym->vchildren, sizeof(struct symt*), 4);
 333         sym->call_conv = call_conv;
 334         symt_add_type(module, &sym->symt);
 335     }
 336     return sym;
 337 }
 338
 339 BOOL symt_add_function_signature_parameter(struct module* module,
 340                                            struct symt_function_signature* sig_type,
 341                                            struct symt* param)
 342 {
 343     struct symt**                       p;
 344     struct symt_function_arg_type*      arg;
 345
 346     assert(sig_type->symt.tag == SymTagFunctionType);
 347     arg = pool_alloc(&module->pool, sizeof(*arg));
 348     if (!arg) return FALSE;
 349     arg->symt.tag = SymTagFunctionArgType;
 350     arg->arg_type = param;
 351     arg->container = &sig_type->symt;
 352     p = vector_add(&sig_type->vchildren, &module->pool);
 353     if (!p) return FALSE; /* FIXME we leak arg */
 354     *p = &arg->symt;
 355
 356     return TRUE;
 357 }
 358
 359 struct symt_pointer* symt_new_pointer(struct module* module, struct symt* ref_type)
 360 {
 361     struct symt_pointer*        sym;
 362
 363     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 364     {
 365         sym->symt.tag = SymTagPointerType;
 366         sym->pointsto = ref_type;
 367         symt_add_type(module, &sym->symt);
 368     }
 369     return sym;
 370 }
 371
 372 struct symt_typedef* symt_new_typedef(struct module* module, struct symt* ref,
 373                                       const char* name)
 374 {
 375     struct symt_typedef* sym;
 376
 377     if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
 378     {
 379         sym->symt.tag = SymTagTypedef;
 380         sym->type     = ref;
 381         sym->hash_elt.name = pool_strdup(&module->pool, name);
 382         hash_table_add(&module->ht_types, &sym->hash_elt);
 383         symt_add_type(module, &sym->symt);
 384     }
 385     return sym;
 386 }
 387
 388 /******************************************************************
 389  *              SymEnumTypes (DBGHELP.@)
 390  *
 391  */
 392 BOOL WINAPI SymEnumTypes(HANDLE hProcess, ULONG64 BaseOfDll,
 393                          PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
 394                          PVOID UserContext)
 395 {
 396     struct module_pair  pair;
 397     char                buffer[sizeof(SYMBOL_INFO) + 256];
 398     SYMBOL_INFO*        sym_info = (SYMBOL_INFO*)buffer;
 399     const char*         tmp;
 400     struct symt*        type;
 401     DWORD64             size;
 402     unsigned int        i;
 403
 404     TRACE("(%p %s %p %p)\n",
 405           hProcess, wine_dbgstr_longlong(BaseOfDll), EnumSymbolsCallback,
 406           UserContext);
 407
 408     if (!(pair.pcs = process_find_by_handle(hProcess))) return FALSE;
 409     pair.requested = module_find_by_addr(pair.pcs, BaseOfDll, DMT_UNKNOWN);
 410     if (!module_get_debug(&pair)) return FALSE;
 411
 412     sym_info->SizeOfStruct = sizeof(SYMBOL_INFO);
 413     sym_info->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
 414
 415     for (i=0; i<vector_length(&pair.effective->vtypes); i++)
 416     {
 417         type = *(struct symt**)vector_at(&pair.effective->vtypes, i);
 418         sym_info->TypeIndex = symt_ptr2index(pair.effective, type);
 419         sym_info->info = 0; /* FIXME */
 420         symt_get_info(pair.effective, type, TI_GET_LENGTH, &size);
 421         sym_info->Size = size;
 422         sym_info->ModBase = pair.requested->module.BaseOfImage;
 423         sym_info->Flags = 0; /* FIXME */
 424         sym_info->Value = 0; /* FIXME */
 425         sym_info->Address = 0; /* FIXME */
 426         sym_info->Register = 0; /* FIXME */
 427         sym_info->Scope = 0; /* FIXME */
 428         sym_info->Tag = type->tag;
 429         tmp = symt_get_name(type);
 430         if (tmp)
 431         {
 432             sym_info->NameLen = min(strlen(tmp),sym_info->MaxNameLen-1);
 433             memcpy(sym_info->Name, tmp, sym_info->NameLen);
 434             sym_info->Name[sym_info->NameLen] = '\0';
 435         }
 436         else
 437            sym_info->Name[sym_info->NameLen = 0] = '\0';
 438         if (!EnumSymbolsCallback(sym_info, sym_info->Size, UserContext)) break;
 439     }
 440     return TRUE;
 441 }
 442
 443 struct enum_types_AtoW
 444 {
 445     char                                buffer[sizeof(SYMBOL_INFOW) + 256 * sizeof(WCHAR)];
 446     void*                               user;
 447     PSYM_ENUMERATESYMBOLS_CALLBACKW     callback;
 448 };
 449
 450 static BOOL CALLBACK enum_types_AtoW(PSYMBOL_INFO si, ULONG addr, PVOID _et)
 451 {
 452     struct enum_types_AtoW*     et = _et;
 453     SYMBOL_INFOW*               siW = (SYMBOL_INFOW*)et->buffer;
 454
 455     copy_symbolW(siW, si);
 456     return et->callback(siW, addr, et->user);
 457 }
 458
 459 /******************************************************************
 460  *              SymEnumTypesW (DBGHELP.@)
 461  *
 462  */
 463 BOOL WINAPI SymEnumTypesW(HANDLE hProcess, ULONG64 BaseOfDll,
 464                           PSYM_ENUMERATESYMBOLS_CALLBACKW EnumSymbolsCallback,
 465                           PVOID UserContext)
 466 {
 467     struct enum_types_AtoW     et;
 468
 469     et.callback = EnumSymbolsCallback;
 470     et.user = UserContext;
 471
 472     return SymEnumTypes(hProcess, BaseOfDll, enum_types_AtoW, &et);
 473 }
 474
 475 /******************************************************************
 476  *              symt_get_info
 477  *
 478  * Retrieves information about a symt (either symbol or type)
 479  */
 480 BOOL symt_get_info(struct module* module, const struct symt* type,
 481                    IMAGEHLP_SYMBOL_TYPE_INFO req, void* pInfo)
 482 {
 483     unsigned            len;
 484
 485     if (!type) return FALSE;
 486
 487 /* helper to typecast pInfo to its expected type (_t) */
 488 #define X(_t) (*((_t*)pInfo))
 489
 490     switch (req)
 491     {
 492     case TI_FINDCHILDREN:
 493         {
 494             const struct vector*        v;
 495             struct symt**               pt;
 496             unsigned                    i;
 497             TI_FINDCHILDREN_PARAMS*     tifp = pInfo;
 498
 499             switch (type->tag)
 500             {
 501             case SymTagUDT:          v = &((const struct symt_udt*)type)->vchildren; break;
 502             case SymTagEnum:         v = &((const struct symt_enum*)type)->vchildren; break;
 503             case SymTagFunctionType: v = &((const struct symt_function_signature*)type)->vchildren; break;
 504             case SymTagFunction:     v = &((const struct symt_function*)type)->vchildren; break;
 505             default:
 506                 FIXME("Unsupported sym-tag %s for find-children\n",
 507                       symt_get_tag_str(type->tag));
 508                 return FALSE;
 509             }
 510             for (i = 0; i < tifp->Count; i++)
 511             {
 512                 if (!(pt = vector_at(v, tifp->Start + i))) return FALSE;
 513                 tifp->ChildId[i] = symt_ptr2index(module, *pt);
 514             }
 515         }
 516         break;
 517
 518     case TI_GET_ADDRESS:
 519         switch (type->tag)
 520         {
 521         case SymTagData:
 522             switch (((const struct symt_data*)type)->kind)
 523             {
 524             case DataIsGlobal:
 525             case DataIsFileStatic:
 526                 X(ULONG64) = ((const struct symt_data*)type)->u.var.offset;
 527                 break;
 528             default: return FALSE;
 529             }
 530             break;
 531         case SymTagFunction:
 532             X(ULONG64) = ((const struct symt_function*)type)->address;
 533             break;
 534         case SymTagPublicSymbol:
 535             X(ULONG64) = ((const struct symt_public*)type)->address;
 536             break;
 537         case SymTagFuncDebugStart:
 538         case SymTagFuncDebugEnd:
 539         case SymTagLabel:
 540             if (!symt_get_info(module, ((const struct symt_hierarchy_point*)type)->parent,
 541                                req, pInfo))
 542                 return FALSE;
 543             X(ULONG64) += ((const struct symt_hierarchy_point*)type)->loc.offset;
 544             break;
 545         case SymTagThunk:
 546             X(ULONG64) = ((const struct symt_thunk*)type)->address;
 547             break;
 548         case SymTagCompiland:
 549             X(ULONG64) = ((const struct symt_compiland*)type)->address;
 550             break;
 551         default:
 552             FIXME("Unsupported sym-tag %s for get-address\n",
 553                   symt_get_tag_str(type->tag));
 554             return FALSE;
 555         }
 556         break;
 557
 558     case TI_GET_BASETYPE:
 559         switch (type->tag)
 560         {
 561         case SymTagBaseType:
 562             X(DWORD) = ((const struct symt_basic*)type)->bt;
 563             break;
 564         case SymTagEnum:
 565             X(DWORD) = btInt;
 566             break;
 567         default:
 568             return FALSE;
 569         }
 570         break;
 571
 572     case TI_GET_BITPOSITION:
 573         if (type->tag == SymTagData &&
 574             ((const struct symt_data*)type)->kind == DataIsMember &&
 575             ((const struct symt_data*)type)->u.member.length != 0)
 576             X(DWORD) = ((const struct symt_data*)type)->u.member.offset & 7;
 577         else return FALSE;
 578         break;
 579
 580     case TI_GET_CHILDRENCOUNT:
 581         switch (type->tag)
 582         {
 583         case SymTagUDT:
 584             X(DWORD) = vector_length(&((const struct symt_udt*)type)->vchildren);
 585             break;
 586         case SymTagEnum:
 587             X(DWORD) = vector_length(&((const struct symt_enum*)type)->vchildren);
 588             break;
 589         case SymTagFunctionType:
 590             X(DWORD) = vector_length(&((const struct symt_function_signature*)type)->vchildren);
 591             break;
 592         case SymTagFunction:
 593             X(DWORD) = vector_length(&((const struct symt_function*)type)->vchildren);
 594             break;
 595         case SymTagPointerType: /* MS does it that way */
 596         case SymTagArrayType: /* MS does it that way */
 597         case SymTagThunk: /* MS does it that way */
 598             X(DWORD) = 0;
 599             break;
 600         default:
 601             FIXME("Unsupported sym-tag %s for get-children-count\n",
 602                   symt_get_tag_str(type->tag));
 603             /* fall through */
 604         case SymTagData:
 605         case SymTagPublicSymbol:
 606         case SymTagBaseType:
 607             return FALSE;
 608         }
 609         break;
 610
 611     case TI_GET_COUNT:
 612         switch (type->tag)
 613         {
 614         case SymTagArrayType:
 615             X(DWORD) = symt_array_count(module, (const struct symt_array*)type);
 616             break;
 617         case SymTagFunctionType:
 618             /* this seems to be wrong for (future) C++ methods, where 'this' parameter
 619              * should be included in this value (and not in GET_CHILDREN_COUNT)
 620              */
 621             X(DWORD) = vector_length(&((const struct symt_function_signature*)type)->vchildren);
 622             break;
 623         default: return FALSE;
 624         }
 625         break;
 626
 627     case TI_GET_DATAKIND:
 628         if (type->tag != SymTagData) return FALSE;
 629         X(DWORD) = ((const struct symt_data*)type)->kind;
 630         break;
 631
 632     case TI_GET_LENGTH:
 633         switch (type->tag)
 634         {
 635         case SymTagBaseType:
 636             X(DWORD64) = ((const struct symt_basic*)type)->size;
 637             break;
 638         case SymTagFunction:
 639             X(DWORD64) = ((const struct symt_function*)type)->size;
 640             break;
 641         case SymTagPointerType:
 642             X(DWORD64) = sizeof(void*);
 643             break;
 644         case SymTagUDT:
 645             X(DWORD64) = ((const struct symt_udt*)type)->size;
 646             break;
 647         case SymTagEnum:
 648             X(DWORD64) = sizeof(int); /* FIXME: should be size of base-type of enum !!! */
 649             break;
 650         case SymTagData:
 651             if (((const struct symt_data*)type)->kind != DataIsMember ||
 652                 !((const struct symt_data*)type)->u.member.length)
 653                 return FALSE;
 654             X(DWORD64) = ((const struct symt_data*)type)->u.member.length;
 655             break;
 656         case SymTagArrayType:
 657             if (!symt_get_info(module, ((const struct symt_array*)type)->base_type,
 658                                TI_GET_LENGTH, pInfo))
 659                 return FALSE;
 660             X(DWORD64) *= symt_array_count(module, (const struct symt_array*)type);
 661             break;
 662         case SymTagPublicSymbol:
 663             X(DWORD64) = ((const struct symt_public*)type)->size;
 664             break;
 665         case SymTagTypedef:
 666             return symt_get_info(module, ((const struct symt_typedef*)type)->type, TI_GET_LENGTH, pInfo);
 667         case SymTagThunk:
 668             X(DWORD64) = ((const struct symt_thunk*)type)->size;
 669             break;
 670         case SymTagLabel:
 671             X(DWORD64) = 0;
 672             break;
 673         default:
 674             FIXME("Unsupported sym-tag %s for get-length\n",
 675                   symt_get_tag_str(type->tag));
 676             /* fall through */
 677         case SymTagFunctionType:
 678             return 0;
 679         }
 680         break;
 681
 682     case TI_GET_LEXICALPARENT:
 683         switch (type->tag)
 684         {
 685         case SymTagBlock:
 686             X(DWORD) = symt_ptr2index(module, ((const struct symt_block*)type)->container);
 687             break;
 688         case SymTagData:
 689             X(DWORD) = symt_ptr2index(module, ((const struct symt_data*)type)->container);
 690             break;
 691         case SymTagFunction:
 692             X(DWORD) = symt_ptr2index(module, ((const struct symt_function*)type)->container);
 693             break;
 694         case SymTagThunk:
 695             X(DWORD) = symt_ptr2index(module, ((const struct symt_thunk*)type)->container);
 696             break;
 697         case SymTagFunctionArgType:
 698             X(DWORD) = symt_ptr2index(module, ((const struct symt_function_arg_type*)type)->container);
 699             break;
 700         default:
 701             FIXME("Unsupported sym-tag %s for get-lexical-parent\n",
 702                   symt_get_tag_str(type->tag));
 703             return FALSE;
 704         }
 705         break;
 706
 707     case TI_GET_NESTED:
 708         switch (type->tag)
 709         {
 710         case SymTagUDT:
 711         case SymTagEnum:
 712             X(DWORD) = 0;
 713             break;
 714         default:
 715             return FALSE;
 716         }
 717         break;
 718
 719     case TI_GET_OFFSET:
 720         switch (type->tag)
 721         {
 722         case SymTagData:
 723             switch (((const struct symt_data*)type)->kind)
 724             {
 725             case DataIsParam:
 726             case DataIsLocal:
 727                 X(ULONG) = ((const struct symt_data*)type)->u.var.offset;
 728                 break;
 729             case DataIsMember:
 730                 X(ULONG) = ((const struct symt_data*)type)->u.member.offset >> 3;
 731                 break;
 732             default:
 733                 FIXME("Unknown kind (%u) for get-offset\n",
 734                       ((const struct symt_data*)type)->kind);
 735                 return FALSE;
 736             }
 737             break;
 738         default:
 739             FIXME("Unsupported sym-tag %s for get-offset\n",
 740                   symt_get_tag_str(type->tag));
 741             return FALSE;
 742         }
 743         break;
 744
 745     case TI_GET_SYMNAME:
 746         {
 747             const char* name = symt_get_name(type);
 748             if (!name) return FALSE;
 749             len = MultiByteToWideChar(CP_ACP, 0, name, -1, NULL, 0);
 750             X(WCHAR*) = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 751             if (!X(WCHAR*)) return FALSE;
 752             MultiByteToWideChar(CP_ACP, 0, name, -1, X(WCHAR*), len);
 753         }
 754         break;
 755
 756     case TI_GET_SYMTAG:
 757         X(DWORD) = type->tag;
 758         break;
 759
 760     case TI_GET_TYPE:
 761     case TI_GET_TYPEID:
 762         switch (type->tag)
 763         {
 764             /* hierarchical => hierarchical */
 765         case SymTagArrayType:
 766             X(DWORD) = symt_ptr2index(module, ((const struct symt_array*)type)->base_type);
 767             break;
 768         case SymTagPointerType:
 769             X(DWORD) = symt_ptr2index(module, ((const struct symt_pointer*)type)->pointsto);
 770             break;
 771         case SymTagFunctionType:
 772             X(DWORD) = symt_ptr2index(module, ((const struct symt_function_signature*)type)->rettype);
 773             break;
 774         case SymTagTypedef:
 775             X(DWORD) = symt_ptr2index(module, ((const struct symt_typedef*)type)->type);
 776             break;
 777             /* lexical => hierarchical */
 778         case SymTagData:
 779             X(DWORD) = symt_ptr2index(module, ((const struct symt_data*)type)->type);
 780             break;
 781         case SymTagFunction:
 782             X(DWORD) = symt_ptr2index(module, ((const struct symt_function*)type)->type);
 783             break;
 784         case SymTagEnum:
 785             X(DWORD) = symt_ptr2index(module, ((const struct symt_enum*)type)->base_type);
 786             break;
 787         case SymTagFunctionArgType:
 788             X(DWORD) = symt_ptr2index(module, ((const struct symt_function_arg_type*)type)->arg_type);
 789             break;
 790         default:
 791             FIXME("Unsupported sym-tag %s for get-type\n",
 792                   symt_get_tag_str(type->tag));
 793         case SymTagPublicSymbol:
 794         case SymTagThunk:
 795         case SymTagLabel:
 796             return FALSE;
 797         }
 798         break;
 799
 800     case TI_GET_UDTKIND:
 801         if (type->tag != SymTagUDT) return FALSE;
 802         X(DWORD) = ((const struct symt_udt*)type)->kind;
 803         break;
 804
 805     case TI_GET_VALUE:
 806         if (type->tag != SymTagData) return FALSE;
 807         switch (((const struct symt_data*)type)->kind)
 808         {
 809         case DataIsConstant: X(VARIANT) = ((const struct symt_data*)type)->u.value; break;
 810         case DataIsLocal:
 811         case DataIsParam:
 812             {
 813                 struct location loc = ((const struct symt_data*)type)->u.var;
 814                 unsigned                i;
 815                 struct module_format*   modfmt;
 816
 817                 if (loc.kind < loc_user) return FALSE;
 818                 for (i = 0; i < DFI_LAST; i++)
 819                 {
 820                     modfmt = module->format_info[i];
 821                     if (modfmt && modfmt->loc_compute)
 822                     {
 823                         modfmt->loc_compute(module->process, modfmt,
 824                                             (const struct symt_function*)((const struct symt_data*)type)->container, &loc);
 825                         break;
 826                     }
 827                 }
 828                 if (loc.kind != loc_absolute) return FALSE;
 829                 X(VARIANT).n1.n2.vt = VT_UI4; /* FIXME */
 830                 X(VARIANT).n1.n2.n3.uiVal = loc.offset;
 831             }
 832             break;
 833         default: return FALSE;
 834         }
 835         break;
 836
 837     case TI_GET_CALLING_CONVENTION:
 838         if (type->tag != SymTagFunctionType) return FALSE;
 839         if (((const struct symt_function_signature*)type)->call_conv == -1)
 840         {
 841             FIXME("No support for calling convention for this signature\n");
 842             X(DWORD) = CV_CALL_FAR_C; /* FIXME */
 843         }
 844         else X(DWORD) = ((const struct symt_function_signature*)type)->call_conv;
 845         break;
 846     case TI_GET_ARRAYINDEXTYPEID:
 847         if (type->tag != SymTagArrayType) return FALSE;
 848         X(DWORD) = symt_ptr2index(module, ((const struct symt_array*)type)->index_type);
 849         break;
 850
 851     case TI_GET_CLASSPARENTID:
 852         /* FIXME: we don't support properly C++ for now, pretend this symbol doesn't
 853          * belong to a parent class
 854          */
 855         return FALSE;
 856
 857 #undef X
 858
 859     case TI_GET_ADDRESSOFFSET:
 860     case TI_GET_SYMINDEX:
 861     case TI_GET_THISADJUST:
 862     case TI_GET_VIRTUALBASECLASS:
 863     case TI_GET_VIRTUALBASEPOINTEROFFSET:
 864     case TI_GET_VIRTUALTABLESHAPEID:
 865     case TI_IS_EQUIV_TO:
 866         FIXME("Unsupported GetInfo request (%u)\n", req);
 867         return FALSE;
 868     default:
 869         FIXME("Unknown GetInfo request (%u)\n", req);
 870         return FALSE;
 871     }
 872
 873     return TRUE;
 874 }
 875
 876 /******************************************************************
 877  *              SymGetTypeInfo (DBGHELP.@)
 878  *
 879  */
 880 BOOL WINAPI SymGetTypeInfo(HANDLE hProcess, DWORD64 ModBase,
 881                            ULONG TypeId, IMAGEHLP_SYMBOL_TYPE_INFO GetType,
 882                            PVOID pInfo)
 883 {
 884     struct module_pair  pair;
 885
 886     pair.pcs = process_find_by_handle(hProcess);
 887     if (!pair.pcs) return FALSE;
 888
 889     pair.requested = module_find_by_addr(pair.pcs, ModBase, DMT_UNKNOWN);
 890     if (!module_get_debug(&pair))
 891     {
 892         FIXME("Someone didn't properly set ModBase (%s)\n", wine_dbgstr_longlong(ModBase));
 893         return FALSE;
 894     }
 895
 896     return symt_get_info(pair.effective, symt_index2ptr(pair.effective, TypeId), GetType, pInfo);
 897 }
 898
 899 /******************************************************************
 900  *              SymGetTypeFromName (DBGHELP.@)
 901  *
 902  */
 903 BOOL WINAPI SymGetTypeFromName(HANDLE hProcess, ULONG64 BaseOfDll,
 904                                PCSTR Name, PSYMBOL_INFO Symbol)
 905 {
 906     struct process*     pcs = process_find_by_handle(hProcess);
 907     struct module_pair  pair;
 908     struct symt*        type;
 909
 910     if (!pcs) return FALSE;
 911     pair.requested = module_find_by_addr(pcs, BaseOfDll, DMT_UNKNOWN);
 912     if (!module_get_debug(&pair)) return FALSE;
 913     type = symt_find_type_by_name(pair.effective, SymTagNull, Name);
 914     if (!type) return FALSE;
 915     Symbol->TypeIndex = symt_ptr2index(pair.effective, type);
 916
 917     return TRUE;
 918 }