text: /*
   * File symbol.c - management of symbols (lexical tree)
   *
   * Copyright (C) 1993, Eric Youngdale.
   *               2004, Eric Pouech
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #define NONAMELESSUNION
  
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <sys/types.h>
  #include <assert.h>
  
  #include "wine/debug.h"
  #include "dbghelp_private.h"
  #include "winnls.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  WINE_DECLARE_DEBUG_CHANNEL(dbghelp_symt);
  
  extern char * CDECL __unDName(char *buffer, const char *mangled, int len,
          void * (CDECL *pfn_alloc)(size_t), void (CDECL *pfn_free)(void *), unsigned short flags);
  
  static inline int cmp_addr(ULONG64 a1, ULONG64 a2)
  {
      if (a1 > a2) return 1;
      if (a1 < a2) return -1;
      return 0;
  }
  
  static inline int cmp_sorttab_addr(struct module* module, int idx, ULONG64 addr)
  {
      ULONG64     ref;
      symt_get_address(&module->addr_sorttab[idx]->symt, &ref);
      return cmp_addr(ref, addr);
  }
  
  int __cdecl symt_cmp_addr(const void* p1, const void* p2)
  {
      const struct symt*  sym1 = *(const struct symt* const *)p1;
      const struct symt*  sym2 = *(const struct symt* const *)p2;
      ULONG64     a1, a2;
  
      symt_get_address(sym1, &a1);
      symt_get_address(sym2, &a2);
      return cmp_addr(a1, a2);
  }
  
  #define BASE_CUSTOM_SYMT 0x80000000
  
  /* dbghelp exposes the internal symbols/types with DWORD indexes.
   * - custom symbols are always stored with index starting at BASE_CUSTOM_SYMT
   * - for all the other (non custom) symbols:
   *   + on 32-bit machines, index is set to the actual address of symt
   *   + on 64-bit machines, the symt address is stored in a dedicated array
   *     which is exposed to the caller and index is the index of the symbol in
   *     this array
   */
  DWORD             symt_ptr2index(struct module* module, const struct symt* sym)
  {
      struct vector* vector;
      DWORD offset;
      const struct symt** c;
      int len, i;
  
      if (!sym) return 0;
      if (sym->tag == SymTagCustom)
      {
          vector = &module->vcustom_symt;
          offset = BASE_CUSTOM_SYMT;
      }
      else
      {
  #ifdef _WIN64
          vector = &module->vsymt;
          offset = 1;
  #else
          return (DWORD)sym;
  #endif
      }
      len = vector_length(vector);
      /* FIXME: this is inefficient */
      for (i = 0; i < len; i++)
      {
          if (*(struct symt**)vector_at(vector, i) == sym)
              return i + offset;
      }
      /* not found */
      c = vector_add(vector, &module->pool);
      if (c) *c = sym;
      return len + offset;
  }
  
  struct symt*      symt_index2ptr(struct module* module, DWORD id)
  {
      struct vector* vector;
      if (id >= BASE_CUSTOM_SYMT)
      {
          id -= BASE_CUSTOM_SYMT;
          vector = &module->vcustom_symt;
      }
      else
      {
  #ifdef _WIN64
          if (!id--) return NULL;
          vector = &module->vsymt;
  #else
          return (struct symt*)id;
  #endif
      }
      return (id >= vector_length(vector)) ? NULL : *(struct symt**)vector_at(vector, id);
  }
  
  static BOOL symt_grow_sorttab(struct module* module, unsigned sz)
  {
      struct symt_ht**    new;
      unsigned int size;
  
      if (sz <= module->sorttab_size) return TRUE;
      if (module->addr_sorttab)
      {
          size = module->sorttab_size * 2;
          new = HeapReAlloc(GetProcessHeap(), 0, module->addr_sorttab,
                            size * sizeof(struct symt_ht*));
      }
      else
      {
          size = 64;
          new = HeapAlloc(GetProcessHeap(), 0, size * sizeof(struct symt_ht*));
      }
      if (!new) return FALSE;
      module->sorttab_size = size;
      module->addr_sorttab = new;
      return TRUE;
  }
  
  static void symt_add_module_ht(struct module* module, struct symt_ht* ht)
  {
      ULONG64             addr;
  
      hash_table_add(&module->ht_symbols, &ht->hash_elt);
      /* Don't store in sorttab a symbol without address, they are of
       * no use here (e.g. constant values)
       */
      if (symt_get_address(&ht->symt, &addr) &&
          symt_grow_sorttab(module, module->num_symbols + 1))
      {
          module->addr_sorttab[module->num_symbols++] = ht;
          module->sortlist_valid = FALSE;
      }
  }
  
  static WCHAR* file_regex(const char* srcfile)
  {
      WCHAR* mask;
      WCHAR* p;
  
      if (!srcfile || !*srcfile)
      {
          if (!(p = mask = HeapAlloc(GetProcessHeap(), 0, 3 * sizeof(WCHAR)))) return NULL;
          *p++ = '?';
          *p++ = '#';
      }
      else
      {
          DWORD  sz = MultiByteToWideChar(CP_ACP, 0, srcfile, -1, NULL, 0);
          WCHAR* srcfileW;
  
          /* FIXME: we use here the largest conversion for every char... could be optimized */
          p = mask = HeapAlloc(GetProcessHeap(), 0, (5 * strlen(srcfile) + 1 + sz) * sizeof(WCHAR));
          if (!mask) return NULL;
          srcfileW = mask + 5 * strlen(srcfile) + 1;
          MultiByteToWideChar(CP_ACP, 0, srcfile, -1, srcfileW, sz);
  
          while (*srcfileW)
          {
              switch (*srcfileW)
              {
              case '\\':
              case '/':
                  *p++ = '[';
                  *p++ = '\\';
                  *p++ = '\\';
                  *p++ = '/';
                  *p++ = ']';
                  break;
              case '.':
                  *p++ = '?';
                  break;
              default:
                  *p++ = *srcfileW;
                  break;
              }
              srcfileW++;
          }
      }
      *p = 0;
      return mask;
  }
  
  struct symt_module* symt_new_module(struct module* module)
  {
      struct symt_module*    sym;
  
      TRACE_(dbghelp_symt)("Adding toplevel exe symbol %s\n", debugstr_w(module->modulename));
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag = SymTagExe;
          sym->module   = module;
          vector_init(&sym->vchildren, sizeof(struct symt*), 8);
      }
      return sym;
  }
  
  struct symt_compiland* symt_new_compiland(struct module* module, 
                                            ULONG_PTR address, unsigned src_idx)
  {
      struct symt_compiland*    sym;
      struct symt_compiland**   p;
  
      TRACE_(dbghelp_symt)("Adding compiland symbol %s:%s\n",
                           debugstr_w(module->modulename), source_get(module, src_idx));
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag  = SymTagCompiland;
          sym->container = module->top;
          sym->address   = address;
          sym->source    = src_idx;
          vector_init(&sym->vchildren, sizeof(struct symt*), 32);
          sym->user      = NULL;
          p = vector_add(&module->top->vchildren, &module->pool);
          *p = sym;
      }
      return sym;
  }
  
  struct symt_public* symt_new_public(struct module* module, 
                                      struct symt_compiland* compiland,
                                      const char* name,
                                      BOOL is_function,
                                      ULONG_PTR address, unsigned size)
  {
      struct symt_public* sym;
      struct symt**       p;
  
      TRACE_(dbghelp_symt)("Adding public symbol %s:%s @%Ix\n",
                           debugstr_w(module->modulename), name, address);
      if ((dbghelp_options & SYMOPT_AUTO_PUBLICS) &&
          symt_find_nearest(module, address) != NULL)
          return NULL;
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag      = SymTagPublicSymbol;
          sym->hash_elt.name = pool_strdup(&module->pool, name);
          sym->container     = compiland ? &compiland->symt : NULL;
          sym->is_function   = is_function;
          sym->address       = address;
          sym->size          = size;
          symt_add_module_ht(module, (struct symt_ht*)sym);
          if (compiland)
          {
              p = vector_add(&compiland->vchildren, &module->pool);
              *p = &sym->symt;
          }
      }
      return sym;
  }
  
  struct symt_data* symt_new_global_variable(struct module* module, 
                                             struct symt_compiland* compiland, 
                                             const char* name, unsigned is_static,
                                             struct location loc, ULONG_PTR size,
                                             struct symt* type)
  {
      struct symt_data*   sym;
      struct symt**       p;
      DWORD64             tsz;
  
      TRACE_(dbghelp_symt)("Adding global symbol %s:%s %d@%Ix %p\n",
                           debugstr_w(module->modulename), name, loc.kind, loc.offset, type);
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag      = SymTagData;
          sym->hash_elt.name = pool_strdup(&module->pool, name);
          sym->kind          = is_static ? DataIsFileStatic : DataIsGlobal;
          sym->container     = compiland ? &compiland->symt : NULL;
          sym->type          = type;
          sym->u.var         = loc;
          if (type && size && symt_get_info(module, type, TI_GET_LENGTH, &tsz))
          {
              if (tsz != size)
                  FIXME("Size mismatch for %s.%s between type (%s) and src (%Iu)\n",
                        debugstr_w(module->modulename), name,
                        wine_dbgstr_longlong(tsz), size);
          }
          symt_add_module_ht(module, (struct symt_ht*)sym);
          if (compiland)
          {
              p = vector_add(&compiland->vchildren, &module->pool);
              *p = &sym->symt;
          }
      }
      return sym;
  }
  
  static void init_function_or_inlinesite(struct symt_function* sym,
                                          struct module* module,
                                          DWORD tag,
                                          struct symt* container,
                                          const char* name,
                                          ULONG_PTR addr, ULONG_PTR size,
                                          struct symt* sig_type)
  {
      assert(!sig_type || sig_type->tag == SymTagFunctionType);
      sym->symt.tag  = tag;
      sym->hash_elt.name = pool_strdup(&module->pool, name);
      sym->container = container;
      sym->address   = addr;
      sym->type      = sig_type;
      sym->size      = size;
      vector_init(&sym->vlines,  sizeof(struct line_info), 64);
      vector_init(&sym->vchildren, sizeof(struct symt*), 8);
  }
  
  struct symt_function* symt_new_function(struct module* module,
                                          struct symt_compiland* compiland,
                                          const char* name,
                                          ULONG_PTR addr, ULONG_PTR size,
                                          struct symt* sig_type)
  {
      struct symt_function* sym;
  
      TRACE_(dbghelp_symt)("Adding global function %s:%s @%Ix-%Ix\n",
                           debugstr_w(module->modulename), name, addr, addr + size - 1);
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          struct symt** p;
          init_function_or_inlinesite(sym, module, SymTagFunction, &compiland->symt, name, addr, size, sig_type);
          sym->next_inlinesite = NULL; /* first of list */
          symt_add_module_ht(module, (struct symt_ht*)sym);
          if (compiland)
          {
              p = vector_add(&compiland->vchildren, &module->pool);
              *p = &sym->symt;
          }
      }
      return sym;
  }
  
  struct symt_inlinesite* symt_new_inlinesite(struct module* module,
                                              struct symt_function* func,
                                              struct symt* container,
                                              const char* name,
                                              ULONG_PTR addr,
                                              struct symt* sig_type)
  {
      struct symt_inlinesite* sym;
  
      TRACE_(dbghelp_symt)("Adding inline site %s @%Ix\n", name, addr);
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          struct symt** p;
          assert(container);
          init_function_or_inlinesite(&sym->func, module, SymTagInlineSite, container, name, addr, 0, sig_type);
          vector_init(&sym->vranges, sizeof(struct addr_range), 2); /* FIXME: number of elts => to be set on input */
          /* chain inline sites */
          sym->func.next_inlinesite = func->next_inlinesite;
          func->next_inlinesite = sym;
          if (container->tag == SymTagFunction || container->tag == SymTagInlineSite)
              p = vector_add(&((struct symt_function*)container)->vchildren, &module->pool);
          else
          {
              assert(container->tag == SymTagBlock);
              p = vector_add(&((struct symt_block*)container)->vchildren, &module->pool);
          }
          *p = &sym->func.symt;
      }
      return sym;
  }
  
  void symt_add_func_line(struct module* module, struct symt_function* func,
                          unsigned source_idx, int line_num, ULONG_PTR addr)
  {
      struct line_info*   dli;
      unsigned            vlen;
      struct line_info*   prev;
      BOOL                last_matches = FALSE;
      int                 i;
  
      if (func == NULL || !(dbghelp_options & SYMOPT_LOAD_LINES)) return;
  
      TRACE_(dbghelp_symt)("(%p)%s:%Ix %s:%u\n",
                           func, func->hash_elt.name, addr,
                           source_get(module, source_idx), line_num);
  
      assert(func->symt.tag == SymTagFunction || func->symt.tag == SymTagInlineSite);
  
      for (i=vector_length(&func->vlines)-1; i>=0; i--)
      {
          dli = vector_at(&func->vlines, i);
          if (dli->is_source_file)
          {
              last_matches = (source_idx == dli->u.source_file);
              break;
          }
      }
      vlen = vector_length(&func->vlines);
      prev = vlen ? vector_at(&func->vlines, vlen - 1) : NULL;
      if (last_matches && prev && addr == prev->u.address)
      {
          WARN("Duplicate addition of line number in %s\n", func->hash_elt.name);
          return;
      }
      if (!last_matches)
      {
          /* we shouldn't have line changes on first line of function */
          dli = vector_add(&func->vlines, &module->pool);
          dli->is_source_file = 1;
          dli->is_first       = (prev == NULL);
          dli->is_last        = 0;
          dli->line_number    = 0;
          dli->u.source_file  = source_idx;
      }
      /* clear previous last */
      if (prev) prev->is_last = 0;
      dli = vector_add(&func->vlines, &module->pool);
      dli->is_source_file = 0;
      dli->is_first       = 0; /* only a source file can be first */
      dli->is_last        = 1;
      dli->line_number    = line_num;
      dli->u.address      = addr;
  }
  
  /******************************************************************
   *             symt_add_func_local
   *
   * Adds a new local/parameter to a given function:
   * In any cases, dt tells whether it's a local variable or a parameter
   * If regno it's not 0:
   *      - then variable is stored in a register
   *      - otherwise, value is referenced by register + offset
   * Otherwise, the variable is stored on the stack:
   *      - offset is then the offset from the frame register
   */
  struct symt_data* symt_add_func_local(struct module* module, 
                                        struct symt_function* func, 
                                        enum DataKind dt,
                                        const struct location* loc,
                                        struct symt_block* block, 
                                        struct symt* type, const char* name)
  {
      struct symt_data*   locsym;
      struct symt**       p;
  
      TRACE_(dbghelp_symt)("Adding local symbol (%s:%s): %s %p\n",
                           debugstr_w(module->modulename), func->hash_elt.name,
                           name, type);
  
      assert(symt_check_tag(&func->symt, SymTagFunction) || symt_check_tag(&func->symt, SymTagInlineSite));
      assert(dt == DataIsParam || dt == DataIsLocal);
  
      locsym = pool_alloc(&module->pool, sizeof(*locsym));
      locsym->symt.tag      = SymTagData;
      locsym->hash_elt.name = pool_strdup(&module->pool, name);
      locsym->hash_elt.next = NULL;
      locsym->kind          = dt;
      locsym->container     = block ? &block->symt : &func->symt;
      locsym->type          = type;
      locsym->u.var         = *loc;
      if (block)
          p = vector_add(&block->vchildren, &module->pool);
      else
          p = vector_add(&func->vchildren, &module->pool);
      *p = &locsym->symt;
      return locsym;
  }
  
  /******************************************************************
   *             symt_add_func_local
   *
   * Adds a new (local) constant to a given function
   */
  struct symt_data* symt_add_func_constant(struct module* module,
                                           struct symt_function* func,
                                           struct symt_block* block,
                                           struct symt* type, const char* name,
                                           VARIANT* v)
  {
      struct symt_data*   locsym;
      struct symt**       p;
  
      TRACE_(dbghelp_symt)("Adding local constant (%s:%s): %s %p\n",
                           debugstr_w(module->modulename), func->hash_elt.name,
                           name, type);
  
      assert(symt_check_tag(&func->symt, SymTagFunction) || symt_check_tag(&func->symt, SymTagInlineSite));
  
      locsym = pool_alloc(&module->pool, sizeof(*locsym));
      locsym->symt.tag      = SymTagData;
      locsym->hash_elt.name = pool_strdup(&module->pool, name);
      locsym->hash_elt.next = NULL;
      locsym->kind          = DataIsConstant;
      locsym->container     = block ? &block->symt : &func->symt;
      locsym->type          = type;
      locsym->u.value       = *v;
      if (block)
          p = vector_add(&block->vchildren, &module->pool);
      else
          p = vector_add(&func->vchildren, &module->pool);
      *p = &locsym->symt;
      return locsym;
  }
  
  struct symt_block* symt_open_func_block(struct module* module, 
                                          struct symt_function* func,
                                          struct symt_block* parent_block, 
                                          unsigned pc, unsigned len)
  {
      struct symt_block*  block;
      struct symt**       p;
  
      assert(symt_check_tag(&func->symt, SymTagFunction) || symt_check_tag(&func->symt, SymTagInlineSite));
  
      assert(!parent_block || parent_block->symt.tag == SymTagBlock);
      block = pool_alloc(&module->pool, sizeof(*block));
      block->symt.tag = SymTagBlock;
      block->address  = func->address + pc;
      block->size     = len;
      block->container = parent_block ? &parent_block->symt : &func->symt;
      vector_init(&block->vchildren, sizeof(struct symt*), 4);
      if (parent_block)
          p = vector_add(&parent_block->vchildren, &module->pool);
      else
          p = vector_add(&func->vchildren, &module->pool);
      *p = &block->symt;
  
      return block;
  }
  
  struct symt_block* symt_close_func_block(struct module* module, 
                                           const struct symt_function* func,
                                           struct symt_block* block, unsigned pc)
  {
      assert(symt_check_tag(&func->symt, SymTagFunction) || symt_check_tag(&func->symt, SymTagInlineSite));
  
      if (pc) block->size = func->address + pc - block->address;
      return (block->container->tag == SymTagBlock) ? 
          CONTAINING_RECORD(block->container, struct symt_block, symt) : NULL;
  }
  
  struct symt_hierarchy_point* symt_add_function_point(struct module* module,
                                                       struct symt_function* func,
                                                       enum SymTagEnum point,
                                                       const struct location* loc,
                                                       const char* name)
  {
      struct symt_hierarchy_point*sym;
      struct symt**               p;
  
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag = point;
          sym->parent   = &func->symt;
          sym->loc      = *loc;
          sym->hash_elt.name = name ? pool_strdup(&module->pool, name) : NULL;
          p = vector_add(&func->vchildren, &module->pool);
          *p = &sym->symt;
      }
      return sym;
  }
  
  /* low and high are absolute addresses */
  BOOL symt_add_inlinesite_range(struct module* module,
                                 struct symt_inlinesite* inlined,
                                 ULONG_PTR low, ULONG_PTR high)
  {
      struct addr_range* p;
  
      p = vector_add(&inlined->vranges, &module->pool);
      p->low = low;
      p->high = high;
      if (TRUE)
      {
          int i;
  
          /* see dbghelp_private.h for the assumptions */
          for (i = 0; i < inlined->vranges.num_elts - 1; i++)
          {
              if (!addr_range_disjoint((struct addr_range*)vector_at(&inlined->vranges, i), p))
              {
                  FIXME("Added addr_range isn't disjoint from siblings\n");
              }
          }
          for ( ; inlined->func.symt.tag != SymTagFunction; inlined = (struct symt_inlinesite*)symt_get_upper_inlined(inlined))
          {
              for (i = 0; i < inlined->vranges.num_elts; i++)
              {
                  struct addr_range* ar = (struct addr_range*)vector_at(&inlined->vranges, i);
                  if (!addr_range_disjoint(ar, p) && !addr_range_inside(ar, p))
                      WARN("Added addr_range not compatible with parent\n");
              }
          }
      }
  
      return TRUE;
  }
  
  struct symt_thunk* symt_new_thunk(struct module* module, 
                                    struct symt_compiland* compiland, 
                                    const char* name, THUNK_ORDINAL ord,
                                    ULONG_PTR addr, ULONG_PTR size)
  {
      struct symt_thunk*  sym;
  
      TRACE_(dbghelp_symt)("Adding global thunk %s:%s @%Ix-%Ix\n",
                           debugstr_w(module->modulename), name, addr, addr + size - 1);
  
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag  = SymTagThunk;
          sym->hash_elt.name = pool_strdup(&module->pool, name);
          sym->container = &compiland->symt;
          sym->address   = addr;
          sym->size      = size;
          sym->ordinal   = ord;
          symt_add_module_ht(module, (struct symt_ht*)sym);
          if (compiland)
          {
              struct symt**       p;
              p = vector_add(&compiland->vchildren, &module->pool);
              *p = &sym->symt;
          }
      }
      return sym;
  }
  
  struct symt_data* symt_new_constant(struct module* module,
                                      struct symt_compiland* compiland,
                                      const char* name, struct symt* type,
                                      const VARIANT* v)
  {
      struct symt_data*  sym;
  
      TRACE_(dbghelp_symt)("Adding constant value %s:%s\n",
                           debugstr_w(module->modulename), name);
  
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag      = SymTagData;
          sym->hash_elt.name = pool_strdup(&module->pool, name);
          sym->kind          = DataIsConstant;
          sym->container     = compiland ? &compiland->symt : NULL;
          sym->type          = type;
          sym->u.value       = *v;
          symt_add_module_ht(module, (struct symt_ht*)sym);
          if (compiland)
          {
              struct symt**       p;
              p = vector_add(&compiland->vchildren, &module->pool);
              *p = &sym->symt;
          }
      }
      return sym;
  }
  
  struct symt_hierarchy_point* symt_new_label(struct module* module,
                                              struct symt_compiland* compiland,
                                              const char* name, ULONG_PTR address)
  {
      struct symt_hierarchy_point*        sym;
  
      TRACE_(dbghelp_symt)("Adding global label value %s:%s\n",
                           debugstr_w(module->modulename), name);
  
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag      = SymTagLabel;
          sym->hash_elt.name = pool_strdup(&module->pool, name);
          sym->loc.kind      = loc_absolute;
          sym->loc.offset    = address;
          sym->parent        = compiland ? &compiland->symt : NULL;
          symt_add_module_ht(module, (struct symt_ht*)sym);
          if (compiland)
          {
              struct symt**       p;
              p = vector_add(&compiland->vchildren, &module->pool);
              *p = &sym->symt;
          }
      }
      return sym;
  }
  
  struct symt_custom* symt_new_custom(struct module* module, const char* name,
                                      DWORD64 addr, DWORD size)
  {
      struct symt_custom*        sym;
  
      TRACE_(dbghelp_symt)("Adding custom symbol %s:%s\n",
                           debugstr_w(module->modulename), name);
  
      if ((sym = pool_alloc(&module->pool, sizeof(*sym))))
      {
          sym->symt.tag      = SymTagCustom;
          sym->hash_elt.name = pool_strdup(&module->pool, name);
          sym->address       = addr;
          sym->size          = size;
          symt_add_module_ht(module, (struct symt_ht*)sym);
      }
      return sym;
  }
  
  /* expect sym_info->MaxNameLen to be set before being called */
  static void symt_fill_sym_info(struct module_pair* pair,
                                 const struct symt_function* func,
                                 const struct symt* sym, SYMBOL_INFO* sym_info)
  {
      const char* name;
      DWORD64 size;
      char* tmp;
  
      if (!symt_get_info(pair->effective, sym, TI_GET_TYPE, &sym_info->TypeIndex))
          sym_info->TypeIndex = 0;
      sym_info->Index = symt_ptr2index(pair->effective, sym);
      sym_info->Reserved[0] = sym_info->Reserved[1] = 0;
      if (!symt_get_info(pair->effective, sym, TI_GET_LENGTH, &size) &&
          (!sym_info->TypeIndex ||
           !symt_get_info(pair->effective, symt_index2ptr(pair->effective, sym_info->TypeIndex),
                           TI_GET_LENGTH, &size)))
          size = 0;
      sym_info->Size = (DWORD)size;
      sym_info->ModBase = pair->requested->module.BaseOfImage;
      sym_info->Flags = 0;
      sym_info->Value = 0;
  
      switch (sym->tag)
      {
      case SymTagData:
          {
              const struct symt_data*  data = (const struct symt_data*)sym;
              switch (data->kind)
              {
              case DataIsParam:
                  sym_info->Flags |= SYMFLAG_PARAMETER;
                  /* fall through */
              case DataIsLocal:
                  sym_info->Flags |= SYMFLAG_LOCAL;
                  {
                      struct location loc = data->u.var;
  
                      if (loc.kind >= loc_user)
                      {
                          unsigned                i;
                          struct module_format*   modfmt;
  
                          for (i = 0; i < DFI_LAST; i++)
                          {
                              modfmt = pair->effective->format_info[i];
                              if (modfmt && modfmt->loc_compute)
                              {
                                  modfmt->loc_compute(pair->pcs, modfmt, func, &loc);
                                  break;
                              }
                          }
                      }
                      switch (loc.kind)
                      {
                      case loc_error:
                          /* for now we report error cases as a negative register number */
                          /* fall through */
                      case loc_register:
                          sym_info->Flags |= SYMFLAG_REGISTER;
                          sym_info->Register = loc.reg;
                          sym_info->Address = 0;
                          break;
                      case loc_regrel:
                          sym_info->Flags |= SYMFLAG_REGREL;
                          sym_info->Register = loc.reg;
                          if (loc.reg == CV_REG_NONE || (int)loc.reg < 0 /* error */)
                              FIXME("suspicious register value %x\n", loc.reg);
                          sym_info->Address = loc.offset;
                          break;
                      case loc_absolute:
                          sym_info->Flags |= SYMFLAG_VALUEPRESENT;
                          sym_info->Value = loc.offset;
                          break;
                      default:
                          FIXME("Shouldn't happen (kind=%d), debug reader backend is broken\n", loc.kind);
                          assert(0);
                      }
                  }
                  break;
              case DataIsGlobal:
              case DataIsFileStatic:
                  switch (data->u.var.kind)
                  {
                  case loc_tlsrel:
                      sym_info->Flags |= SYMFLAG_TLSREL;
                      /* fall through */
                  case loc_absolute:
                      symt_get_address(sym, &sym_info->Address);
                      sym_info->Register = 0;
                      break;
                  default:
                      FIXME("Shouldn't happen (kind=%d), debug reader backend is broken\n", data->u.var.kind);
                      assert(0);
                  }
                  break;
              case DataIsConstant:
                  sym_info->Flags |= SYMFLAG_VALUEPRESENT;
                  if (data->container &&
                      (data->container->tag == SymTagFunction || data->container->tag == SymTagBlock))
                      sym_info->Flags |= SYMFLAG_LOCAL;
                  switch (V_VT(&data->u.value))
                  {
                  case VT_I8:  sym_info->Value = (LONG64)V_I8(&data->u.value); break;
                  case VT_I4:  sym_info->Value = (LONG64)V_I4(&data->u.value); break;
                  case VT_I2:  sym_info->Value = (LONG64)V_I2(&data->u.value); break;
                  case VT_I1:  sym_info->Value = (LONG64)V_I1(&data->u.value); break;
                  case VT_UINT:sym_info->Value = V_UINT(&data->u.value); break;
                  case VT_UI8: sym_info->Value = V_UI8(&data->u.value); break;
                  case VT_UI4: sym_info->Value = V_UI4(&data->u.value); break;
                  case VT_UI2: sym_info->Value = V_UI2(&data->u.value); break;
                  case VT_UI1: sym_info->Value = V_UI1(&data->u.value); break;
                  case VT_BYREF: sym_info->Value = (DWORD_PTR)V_BYREF(&data->u.value); break;
                  case VT_EMPTY: sym_info->Value = 0; break;
                  default:
                      FIXME("Unsupported variant type (%u)\n", V_VT(&data->u.value));
                      sym_info->Value = 0;
                      break;
                  }
                  break;
              default:
                  FIXME("Unhandled kind (%u) in sym data\n", data->kind);
              }
          }
          break;
      case SymTagPublicSymbol:
          {
              const struct symt_public* pub = (const struct symt_public*)sym;
              if (pub->is_function)
                  sym_info->Flags |= SYMFLAG_PUBLIC_CODE;
              else
                  sym_info->Flags |= SYMFLAG_EXPORT;
              symt_get_address(sym, &sym_info->Address);
          }
          break;
      case SymTagFunction:
      case SymTagInlineSite:
          symt_get_address(sym, &sym_info->Address);
          break;
      case SymTagThunk:
          sym_info->Flags |= SYMFLAG_THUNK;
          symt_get_address(sym, &sym_info->Address);
          break;
      case SymTagCustom:
          symt_get_address(sym, &sym_info->Address);
          sym_info->Flags |= SYMFLAG_VIRTUAL;
          break;
      default:
          symt_get_address(sym, &sym_info->Address);
          sym_info->Register = 0;
          break;
      }
      sym_info->Scope = 0; /* FIXME */
      sym_info->Tag = sym->tag;
      name = symt_get_name(sym);
      if (sym_info->MaxNameLen &&
          sym->tag == SymTagPublicSymbol && (dbghelp_options & SYMOPT_UNDNAME) &&
          (tmp = __unDName(NULL, name, 0, malloc, free, UNDNAME_NAME_ONLY)) != NULL)
      {
          symbol_setname(sym_info, tmp);
          free(tmp);
      }
      else
          symbol_setname(sym_info, name);
  
      TRACE_(dbghelp_symt)("%p => %s %lu %s\n",
                           sym, sym_info->Name, sym_info->Size,
                           wine_dbgstr_longlong(sym_info->Address));
  }
  
  struct sym_enum
  {
      PSYM_ENUMERATESYMBOLS_CALLBACK      cb;
      PVOID                               user;
      SYMBOL_INFO*                        sym_info;
      DWORD                               index;
      DWORD                               tag;
      DWORD64                             addr;
      char                                buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
  };
  
  static BOOL send_symbol(const struct sym_enum* se, struct module_pair* pair,
                          const struct symt_function* func, const struct symt* sym)
  {
      symt_fill_sym_info(pair, func, sym, se->sym_info);
      if (se->index && se->sym_info->Index != se->index) return FALSE;
      if (se->tag && se->sym_info->Tag != se->tag) return FALSE;
      if (se->addr && !(se->addr >= se->sym_info->Address && se->addr < se->sym_info->Address + se->sym_info->Size)) return FALSE;
      return !se->cb(se->sym_info, se->sym_info->Size, se->user);
  }
  
  static BOOL symt_enum_module(struct module_pair* pair, const WCHAR* match,
                               const struct sym_enum* se)
  {
      void*                       ptr;
      struct symt_ht*             sym = NULL;
      struct hash_table_iter      hti;
      WCHAR*                      nameW;
      BOOL                        ret;
  
      hash_table_iter_init(&pair->effective->ht_symbols, &hti, NULL);
      while ((ptr = hash_table_iter_up(&hti)))
      {
          sym = CONTAINING_RECORD(ptr, struct symt_ht, hash_elt);
          nameW = symt_get_nameW(&sym->symt);
          ret = SymMatchStringW(nameW, match, FALSE);
          HeapFree(GetProcessHeap(), 0, nameW);
          if (ret)
          {
              se->sym_info->SizeOfStruct = sizeof(SYMBOL_INFO);
              se->sym_info->MaxNameLen = sizeof(se->buffer) - sizeof(SYMBOL_INFO);
              if (send_symbol(se, pair, NULL, &sym->symt)) return TRUE;
          }
      }
      return FALSE;
  }
  
  static inline unsigned where_to_insert(struct module* module, unsigned high, const struct symt_ht* elt)
  {
      unsigned    low = 0, mid = high / 2;
      ULONG64     addr;
  
      if (!high) return 0;
      symt_get_address(&elt->symt, &addr);
      do
      {
          switch (cmp_sorttab_addr(module, mid, addr))
          {
          case 0: return mid;
          case -1: low = mid + 1; break;
          case 1: high = mid; break;
          }
          mid = low + (high - low) / 2;
      } while (low < high);
      return mid;
  }
  
  /***********************************************************************
   *              resort_symbols
   *
   * Rebuild sorted list of symbols for a module.
   */
  static BOOL resort_symbols(struct module* module)
  {
      int delta;
  
      if (!(module->module.NumSyms = module->num_symbols))
          return FALSE;
  
      /* we know that set from 0 up to num_sorttab is already sorted
       * so sort the remaining (new) symbols, and merge the two sets
       * (unless the first set is empty)
       */
      delta = module->num_symbols - module->num_sorttab;
      qsort(&module->addr_sorttab[module->num_sorttab], delta, sizeof(struct symt_ht*), symt_cmp_addr);
      if (module->num_sorttab)
      {
          int     i, ins_idx = module->num_sorttab, prev_ins_idx;
          static struct symt_ht** tmp;
          static unsigned num_tmp;
  
          if (num_tmp < delta)
          {
              static struct symt_ht** new;
              if (tmp)
                  new = HeapReAlloc(GetProcessHeap(), 0, tmp, delta * sizeof(struct symt_ht*));
              else
                  new = HeapAlloc(GetProcessHeap(), 0, delta * sizeof(struct symt_ht*));
              if (!new)
              {
                  module->num_sorttab = 0;
                  return resort_symbols(module);
              }
              tmp = new;
              num_tmp = delta;
          }
          memcpy(tmp, &module->addr_sorttab[module->num_sorttab], delta * sizeof(struct symt_ht*));
          qsort(tmp, delta, sizeof(struct symt_ht*), symt_cmp_addr);
  
          for (i = delta - 1; i >= 0; i--)
          {
              prev_ins_idx = ins_idx;
              ins_idx = where_to_insert(module, ins_idx, tmp[i]);
              memmove(&module->addr_sorttab[ins_idx + i + 1],
                      &module->addr_sorttab[ins_idx],
                      (prev_ins_idx - ins_idx) * sizeof(struct symt_ht*));
              module->addr_sorttab[ins_idx + i] = tmp[i];
          }
      }
      module->num_sorttab = module->num_symbols;
      return module->sortlist_valid = TRUE;
  }
  
  static void symt_get_length(struct module* module, const struct symt* symt, ULONG64* size)
  {
      DWORD       type_index;
  
      if (symt_get_info(module,  symt, TI_GET_LENGTH, size) && *size)
          return;
  
      if (symt_get_info(module, symt, TI_GET_TYPE, &type_index) &&
          symt_get_info(module, symt_index2ptr(module, type_index), TI_GET_LENGTH, size)) return;
      *size = 1; /* no size info */
  }
  
  /* needed by symt_find_nearest */
  static int symt_get_best_at(struct module* module, int idx_sorttab)
  {
      ULONG64 ref_addr;
      int idx_sorttab_orig = idx_sorttab;
      if (module->addr_sorttab[idx_sorttab]->symt.tag == SymTagPublicSymbol)
      {
          symt_get_address(&module->addr_sorttab[idx_sorttab]->symt, &ref_addr);
          while (idx_sorttab > 0 &&
                 module->addr_sorttab[idx_sorttab]->symt.tag == SymTagPublicSymbol &&
                 !cmp_sorttab_addr(module, idx_sorttab - 1, ref_addr))
              idx_sorttab--;
          if (module->addr_sorttab[idx_sorttab]->symt.tag == SymTagPublicSymbol)
          {
              idx_sorttab = idx_sorttab_orig;
              while (idx_sorttab < module->num_sorttab - 1 &&
                     module->addr_sorttab[idx_sorttab]->symt.tag == SymTagPublicSymbol &&
                     !cmp_sorttab_addr(module, idx_sorttab + 1, ref_addr))
                  idx_sorttab++;
          }
          /* if no better symbol was found restore the original */
          if (module->addr_sorttab[idx_sorttab]->symt.tag == SymTagPublicSymbol)
              idx_sorttab = idx_sorttab_orig;
      }
      return idx_sorttab;
  }
  
  /* assume addr is in module */
  struct symt_ht* symt_find_nearest(struct module* module, DWORD_PTR addr)
  {
      int         mid, high, low;
      ULONG64     ref_addr, ref_size;
  
      if (!module->sortlist_valid || !module->addr_sorttab)
      {
          if (!resort_symbols(module)) return NULL;
      }
  
      /*
       * Binary search to find closest symbol.
       */
      low = 0;
      high = module->num_sorttab;
  
      symt_get_address(&module->addr_sorttab[0]->symt, &ref_addr);
      if (addr < ref_addr) return NULL;
  
      if (high)
      {
          symt_get_address(&module->addr_sorttab[high - 1]->symt, &ref_addr);
          symt_get_length(module, &module->addr_sorttab[high - 1]->symt, &ref_size);
          if (addr >= ref_addr + ref_size) return NULL;
      }
      
      while (high > low + 1)
      {
          mid = (high + low) / 2;
          if (cmp_sorttab_addr(module, mid, addr) < 0)
              low = mid;
          else
              high = mid;
      }
      if (low != high && high != module->num_sorttab &&
          cmp_sorttab_addr(module, high, addr) <= 0)
          low = high;
  
      /* If found symbol is a public symbol, check if there are any other entries that
       * might also have the same address, but would get better information
       */
      low = symt_get_best_at(module, low);
  
      return module->addr_sorttab[low];
  }
  
  struct symt_ht* symt_find_symbol_at(struct module* module, DWORD_PTR addr)
  {
      struct symt_ht* nearest = symt_find_nearest(module, addr);
      if (nearest)
      {
          ULONG64     symaddr, symsize;
          symt_get_address(&nearest->symt, &symaddr);
          symt_get_length(module, &nearest->symt, &symsize);
          if (addr < symaddr || addr >= symaddr + symsize)
              nearest = NULL;
      }
      return nearest;
  }
  
  static BOOL symt_enum_locals_helper(struct module_pair* pair,
                                      const WCHAR* match, const struct sym_enum* se,
                                      struct symt_function* func, const struct vector* v)
  {
      struct symt*        lsym = NULL;
      DWORD_PTR           pc = pair->pcs->localscope_pc;
      unsigned int        i;
      WCHAR*              nameW;
      BOOL                ret;
  
      for (i=0; i<vector_length(v); i++)
      {
          lsym = *(struct symt**)vector_at(v, i);
          switch (lsym->tag)
          {
          case SymTagBlock:
              {
                  struct symt_block*  block = (struct symt_block*)lsym;
                  if (pc < block->address || block->address + block->size <= pc)
                      continue;
                  if (!symt_enum_locals_helper(pair, match, se, func, &block->vchildren))
                      return FALSE;
              }
              break;
          case SymTagData:
              nameW = symt_get_nameW(lsym);
              ret = SymMatchStringW(nameW, match,
                                    !(dbghelp_options & SYMOPT_CASE_INSENSITIVE));
              HeapFree(GetProcessHeap(), 0, nameW);
              if (ret)
              {
                  if (send_symbol(se, pair, func, lsym)) return FALSE;
              }
              break;
          case SymTagLabel:
          case SymTagFuncDebugStart:
          case SymTagFuncDebugEnd:
          case SymTagCustom:
          case SymTagInlineSite:
              break;
          default:
              FIXME("Unknown type: %u (%x)\n", lsym->tag, lsym->tag);
              assert(0);
          }
      }
      return TRUE;
  }
  
  static BOOL symt_enum_locals(struct process* pcs, const WCHAR* mask,
                               const struct sym_enum* se)
  {
      struct module_pair  pair;
  
      se->sym_info->SizeOfStruct = sizeof(*se->sym_info);
      se->sym_info->MaxNameLen = sizeof(se->buffer) - sizeof(SYMBOL_INFO);
  
      pair.pcs = pcs;
      pair.requested = module_find_by_addr(pair.pcs, pcs->localscope_pc, DMT_UNKNOWN);
      if (!module_get_debug(&pair)) return FALSE;
  
      if (symt_check_tag(pcs->localscope_symt, SymTagFunction) ||
          symt_check_tag(pcs->localscope_symt, SymTagInlineSite))
      {
          struct symt_function* func = (struct symt_function*)pcs->localscope_symt;
          return symt_enum_locals_helper(&pair, mask ? mask : L"*", se, func, &func->vchildren);
      }
      return FALSE;
  }
  
  /**********************************************************
   *              symbol_setname
   *
   * Properly sets Name and NameLen in SYMBOL_INFO
   * according to MaxNameLen value
   */
  void symbol_setname(SYMBOL_INFO* sym_info, const char* name)
  {
      SIZE_T len = 0;
      if (name)
      {
          sym_info->NameLen = strlen(name);
          if (sym_info->MaxNameLen)
          {
              len = min(sym_info->NameLen, sym_info->MaxNameLen - 1);
              memcpy(sym_info->Name, name, len);
          }
      }
      else
          sym_info->NameLen = 0;
      sym_info->Name[len] = '\0';
  }
  
  /******************************************************************
   *		copy_symbolW
   *
   * Helper for transforming an ANSI symbol info into a UNICODE one.
   * Assume that MaxNameLen is the same for both version (A & W).
   */
  void copy_symbolW(SYMBOL_INFOW* siw, const SYMBOL_INFO* si)
  {
      siw->SizeOfStruct = si->SizeOfStruct;
      siw->TypeIndex = si->TypeIndex; 
      siw->Reserved[0] = si->Reserved[0];
      siw->Reserved[1] = si->Reserved[1];
      siw->Index = si->Index;
      siw->Size = si->Size;
      siw->ModBase = si->ModBase;
      siw->Flags = si->Flags;
      siw->Value = si->Value;
      siw->Address = si->Address;
      siw->Register = si->Register;
      siw->Scope = si->Scope;
      siw->Tag = si->Tag;
      siw->NameLen = si->NameLen;
      siw->MaxNameLen = si->MaxNameLen;
      MultiByteToWideChar(CP_ACP, 0, si->Name, -1, siw->Name, siw->MaxNameLen);
  }
  
  /* return the lowest inline site inside a function */
  struct symt_inlinesite* symt_find_lowest_inlined(struct symt_function* func, DWORD64 addr)
  {
      struct symt_inlinesite* current;
      int i;
  
      assert(func->symt.tag == SymTagFunction);
      for (current = func->next_inlinesite; current; current = current->func.next_inlinesite)
      {
          for (i = 0; i < current->vranges.num_elts; ++i)
          {
              struct addr_range* ar = (struct addr_range*)vector_at(&current->vranges, i);
              /* first matching range gives the lowest inline site; see dbghelp_private.h for details */
              if (ar->low <= addr && addr < ar->high)
                  return current;
          }
      }
      return NULL;
  }
  
  /* from an inline function, get either the enclosing inlined function, or the top function when no inlined */
  struct symt* symt_get_upper_inlined(struct symt_inlinesite* inlined)
  {
      struct symt* symt = &inlined->func.symt;
  
      do
      {
          assert(symt);
          if (symt->tag == SymTagBlock)
              symt = ((struct symt_block*)symt)->container;
          else
              symt = ((struct symt_function*)symt)->container;
      } while (symt->tag == SymTagBlock);
      assert(symt->tag == SymTagFunction || symt->tag == SymTagInlineSite);
      return symt;
  }
  
  /* lookup in module for an inline site (from addr and inline_ctx) */
  struct symt_inlinesite* symt_find_inlined_site(struct module* module, DWORD64 addr, DWORD inline_ctx)
  {
      struct symt_ht* symt = symt_find_symbol_at(module, addr);
  
      if (symt_check_tag(&symt->symt, SymTagFunction))
      {
          struct symt_function* func = (struct symt_function*)symt;
          struct symt_inlinesite* curr = symt_find_lowest_inlined(func, addr);
          DWORD depth = IFC_DEPTH(inline_ctx);
  
          if (curr)
              for ( ; &curr->func != func; curr = (struct symt_inlinesite*)symt_get_upper_inlined(curr))
                  if (depth-- == 0) return curr;
      }
      return NULL;
  }
  
  DWORD symt_get_inlinesite_depth(HANDLE hProcess, DWORD64 addr)
  {
      struct module_pair pair;
      DWORD depth = 0;
  
      if (module_init_pair(&pair, hProcess, addr))
      {
          struct symt_ht* symt = symt_find_symbol_at(pair.effective, addr);
          if (symt_check_tag(&symt->symt, SymTagFunction))
          {
              struct symt_inlinesite* inlined = symt_find_lowest_inlined((struct symt_function*)symt, addr);
              if (inlined)
              {
                  for ( ; &inlined->func.symt != &symt->symt; inlined = (struct symt_inlinesite*)symt_get_upper_inlined(inlined))
                      ++depth;
              }
          }
      }
      return depth;
  }
  
  /******************************************************************
   *		sym_enum
   *
   * Core routine for most of the enumeration of symbols
   */
  static BOOL sym_enum(HANDLE hProcess, ULONG64 BaseOfDll, PCWSTR Mask,
                       const struct sym_enum* se)
  {
      struct module_pair  pair;
      const WCHAR*        bang;
      WCHAR*              mod;
  
      pair.pcs = process_find_by_handle(hProcess);
      if (!pair.pcs) return FALSE;
      if (BaseOfDll == 0)
      {
          /* do local variables ? */
          if (!Mask || !(bang = wcschr(Mask, '!')))
              return symt_enum_locals(pair.pcs, Mask, se);
  
          if (bang == Mask) return FALSE;
  
          mod = HeapAlloc(GetProcessHeap(), 0, (bang - Mask + 1) * sizeof(WCHAR));
          if (!mod) return FALSE;
          memcpy(mod, Mask, (bang - Mask) * sizeof(WCHAR));
          mod[bang - Mask] = 0;
  
          for (pair.requested = pair.pcs->lmodules; pair.requested; pair.requested = pair.requested->next)
          {
              if (pair.requested->type == DMT_PE && module_get_debug(&pair))
              {
                  if (SymMatchStringW(pair.requested->modulename, mod, FALSE) &&
                      symt_enum_module(&pair, bang + 1, se))
                      break;
              }
          }
          /* not found in PE modules, retry on the ELF ones
           */
          if (!pair.requested && dbghelp_opt_native)
          {
              for (pair.requested = pair.pcs->lmodules; pair.requested; pair.requested = pair.requested->next)
              {
                  if ((pair.requested->type == DMT_ELF || pair.requested->type == DMT_MACHO) &&
                      !module_get_containee(pair.pcs, pair.requested) &&
                      module_get_debug(&pair))
                  {
                      if (SymMatchStringW(pair.requested->modulename, mod, FALSE) &&
                          symt_enum_module(&pair, bang + 1, se))
                      break;
                  }
              }
          }
          HeapFree(GetProcessHeap(), 0, mod);
          return TRUE;
      }
      pair.requested = module_find_by_addr(pair.pcs, BaseOfDll, DMT_UNKNOWN);
      if (!module_get_debug(&pair))
          return FALSE;
  
      /* we always ignore module name from Mask when BaseOfDll is defined */
      if (Mask && (bang = wcschr(Mask, '!')))
      {
          if (bang == Mask) return FALSE;
          Mask = bang + 1;
      }
  
      symt_enum_module(&pair, Mask ? Mask : L"*", se);
  
      return TRUE;
  }
  
  static inline BOOL doSymEnumSymbols(HANDLE hProcess, ULONG64 BaseOfDll, PCWSTR Mask,
                                      PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
                                      PVOID UserContext)
  {
      struct sym_enum     se;
  
      se.cb = EnumSymbolsCallback;
      se.user = UserContext;
      se.index = 0;
      se.tag = 0;
      se.addr = 0;
      se.sym_info = (PSYMBOL_INFO)se.buffer;
  
      return sym_enum(hProcess, BaseOfDll, Mask, &se);
  }
  
  /******************************************************************
   *		SymEnumSymbols (DBGHELP.@)
   *
   * cases BaseOfDll = 0
   *      !foo fails always (despite what MSDN states)
   *      RE1!RE2 looks up all modules matching RE1, and in all these modules, lookup RE2
   *      no ! in Mask, lookup in local Context
   * cases BaseOfDll != 0
   *      !foo fails always (despite what MSDN states)
   *      RE1!RE2 gets RE2 from BaseOfDll (whatever RE1 is)
   */
  BOOL WINAPI SymEnumSymbols(HANDLE hProcess, ULONG64 BaseOfDll, PCSTR Mask,
                             PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
                             PVOID UserContext)
  {
      BOOL                ret;
      PWSTR               maskW = NULL;
  
      TRACE("(%p %s %s %p %p)\n",
            hProcess, wine_dbgstr_longlong(BaseOfDll), debugstr_a(Mask),
            EnumSymbolsCallback, UserContext);
  
      if (Mask)
      {
          DWORD sz = MultiByteToWideChar(CP_ACP, 0, Mask, -1, NULL, 0);
          if (!(maskW = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
              return FALSE;
          MultiByteToWideChar(CP_ACP, 0, Mask, -1, maskW, sz);
      }
      ret = doSymEnumSymbols(hProcess, BaseOfDll, maskW, EnumSymbolsCallback, UserContext);
      HeapFree(GetProcessHeap(), 0, maskW);
      return ret;
  }
  
  struct sym_enumW
  {
      PSYM_ENUMERATESYMBOLS_CALLBACKW     cb;
      void*                               ctx;
      PSYMBOL_INFOW                       sym_info;
      char                                buffer[sizeof(SYMBOL_INFOW) + MAX_SYM_NAME * sizeof(WCHAR)];
  };
      
  static BOOL CALLBACK sym_enumW(PSYMBOL_INFO si, ULONG size, PVOID ctx)
  {
      struct sym_enumW*   sew = ctx;
  
      copy_symbolW(sew->sym_info, si);
  
      return (sew->cb)(sew->sym_info, size, sew->ctx);
  }
  
  /******************************************************************
   *		SymEnumSymbolsW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymEnumSymbolsW(HANDLE hProcess, ULONG64 BaseOfDll, PCWSTR Mask,
                              PSYM_ENUMERATESYMBOLS_CALLBACKW EnumSymbolsCallback,
                              PVOID UserContext)
  {
      struct sym_enumW    sew;
  
      sew.ctx = UserContext;
      sew.cb = EnumSymbolsCallback;
      sew.sym_info = (PSYMBOL_INFOW)sew.buffer;
  
      return doSymEnumSymbols(hProcess, BaseOfDll, Mask, sym_enumW, &sew);
  }
  
  struct sym_enumerate
  {
      void*                       ctx;
      PSYM_ENUMSYMBOLS_CALLBACK   cb;
  };
  
  static BOOL CALLBACK sym_enumerate_cb(PSYMBOL_INFO syminfo, ULONG size, void* ctx)
  {
      struct sym_enumerate*       se = ctx;
      return (se->cb)(syminfo->Name, syminfo->Address, syminfo->Size, se->ctx);
  }
  
  /***********************************************************************
   *		SymEnumerateSymbols (DBGHELP.@)
   */
  BOOL WINAPI SymEnumerateSymbols(HANDLE hProcess, DWORD BaseOfDll,
                                  PSYM_ENUMSYMBOLS_CALLBACK EnumSymbolsCallback, 
                                  PVOID UserContext)
  {
      struct sym_enumerate        se;
  
      se.ctx = UserContext;
      se.cb  = EnumSymbolsCallback;
      
      return SymEnumSymbols(hProcess, BaseOfDll, NULL, sym_enumerate_cb, &se);
  }
  
  struct sym_enumerate64
  {
      void*                       ctx;
      PSYM_ENUMSYMBOLS_CALLBACK64 cb;
  };
  
  static BOOL CALLBACK sym_enumerate_cb64(PSYMBOL_INFO syminfo, ULONG size, void* ctx)
  {
      struct sym_enumerate64*     se = ctx;
      return (se->cb)(syminfo->Name, syminfo->Address, syminfo->Size, se->ctx);
  }
  
  /***********************************************************************
   *              SymEnumerateSymbols64 (DBGHELP.@)
   */
  BOOL WINAPI SymEnumerateSymbols64(HANDLE hProcess, DWORD64 BaseOfDll,
                                    PSYM_ENUMSYMBOLS_CALLBACK64 EnumSymbolsCallback,
                                    PVOID UserContext)
  {
      struct sym_enumerate64      se;
  
      se.ctx = UserContext;
      se.cb  = EnumSymbolsCallback;
  
      return SymEnumSymbols(hProcess, BaseOfDll, NULL, sym_enumerate_cb64, &se);
  }
  
  /******************************************************************
   *		SymFromAddr (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromAddr(HANDLE hProcess, DWORD64 Address, 
                          DWORD64* Displacement, PSYMBOL_INFO Symbol)
  {
      struct module_pair  pair;
      struct symt_ht*     sym;
  
      if (!module_init_pair(&pair, hProcess, Address)) return FALSE;
      if ((sym = symt_find_symbol_at(pair.effective, Address)) == NULL) return FALSE;
  
      symt_fill_sym_info(&pair, NULL, &sym->symt, Symbol);
      if (Displacement)
          *Displacement = (Address >= Symbol->Address) ? (Address - Symbol->Address) : (DWORD64)-1;
      return TRUE;
  }
  
  /******************************************************************
   *		SymFromAddrW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromAddrW(HANDLE hProcess, DWORD64 Address, 
                           DWORD64* Displacement, PSYMBOL_INFOW Symbol)
  {
      PSYMBOL_INFO        si;
      unsigned            len;
      BOOL                ret;
  
      len = sizeof(*si) + Symbol->MaxNameLen * sizeof(WCHAR);
      si = HeapAlloc(GetProcessHeap(), 0, len);
      if (!si) return FALSE;
  
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = Symbol->MaxNameLen;
      if ((ret = SymFromAddr(hProcess, Address, Displacement, si)))
      {
          copy_symbolW(Symbol, si);
      }
      HeapFree(GetProcessHeap(), 0, si);
      return ret;
  }
  
  /******************************************************************
   *		SymGetSymFromAddr (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetSymFromAddr(HANDLE hProcess, DWORD Address,
                                PDWORD Displacement, PIMAGEHLP_SYMBOL Symbol)
  {
      char        buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
      SYMBOL_INFO*si = (SYMBOL_INFO*)buffer;
      size_t      len;
      DWORD64     Displacement64;
  
      if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = MAX_SYM_NAME;
      if (!SymFromAddr(hProcess, Address, &Displacement64, si))
          return FALSE;
  
      if (Displacement)
          *Displacement = Displacement64;
      Symbol->Address = si->Address;
      Symbol->Size    = si->Size;
      Symbol->Flags   = si->Flags;
      len = min(Symbol->MaxNameLength, si->MaxNameLen);
      lstrcpynA(Symbol->Name, si->Name, len);
      return TRUE;
  }
  
  /******************************************************************
   *		SymGetSymFromAddr64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetSymFromAddr64(HANDLE hProcess, DWORD64 Address,
                                  PDWORD64 Displacement, PIMAGEHLP_SYMBOL64 Symbol)
  {
      char        buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
      SYMBOL_INFO*si = (SYMBOL_INFO*)buffer;
      size_t      len;
      DWORD64     Displacement64;
  
      if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = MAX_SYM_NAME;
      if (!SymFromAddr(hProcess, Address, &Displacement64, si))
          return FALSE;
  
      if (Displacement)
          *Displacement = Displacement64;
      Symbol->Address = si->Address;
      Symbol->Size    = si->Size;
      Symbol->Flags   = si->Flags;
      len = min(Symbol->MaxNameLength, si->MaxNameLen);
      lstrcpynA(Symbol->Name, si->Name, len);
      return TRUE;
  }
  
  static BOOL find_name(struct process* pcs, struct module* module, const char* name,
                        SYMBOL_INFO* symbol)
  {
      struct hash_table_iter      hti;
      void*                       ptr;
      struct symt_ht*             sym = NULL;
      struct module_pair          pair;
  
      pair.pcs = pcs;
      if (!(pair.requested = module)) return FALSE;
      if (!module_get_debug(&pair)) return FALSE;
  
      hash_table_iter_init(&pair.effective->ht_symbols, &hti, name);
      while ((ptr = hash_table_iter_up(&hti)))
      {
          sym = CONTAINING_RECORD(ptr, struct symt_ht, hash_elt);
  
          if (!strcmp(sym->hash_elt.name, name))
          {
              symt_fill_sym_info(&pair, NULL, &sym->symt, symbol);
              return TRUE;
          }
      }
      return FALSE;
  
  }
  /******************************************************************
   *		SymFromName (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromName(HANDLE hProcess, PCSTR Name, PSYMBOL_INFO Symbol)
  {
      struct process*             pcs = process_find_by_handle(hProcess);
      struct module*              module;
      const char*                 name;
  
      TRACE("(%p, %s, %p)\n", hProcess, Name, Symbol);
      if (!pcs) return FALSE;
      if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
      name = strchr(Name, '!');
      if (name)
      {
          char    tmp[128];
          assert(name - Name < sizeof(tmp));
          memcpy(tmp, Name, name - Name);
          tmp[name - Name] = '\0';
          module = module_find_by_nameA(pcs, tmp);
          return find_name(pcs, module, name + 1, Symbol);
      }
      for (module = pcs->lmodules; module; module = module->next)
      {
          if (module->type == DMT_PE && find_name(pcs, module, Name, Symbol))
              return TRUE;
      }
      /* not found in PE modules, retry on the ELF ones
       */
      if (dbghelp_opt_native)
      {
          for (module = pcs->lmodules; module; module = module->next)
          {
              if ((module->type == DMT_ELF || module->type == DMT_MACHO) &&
                  !module_get_containee(pcs, module) &&
                  find_name(pcs, module, Name, Symbol))
                  return TRUE;
          }
      }
      return FALSE;
  }
  
  /***********************************************************************
   *      SymFromNameW (DBGHELP.@)
   */
  BOOL WINAPI SymFromNameW(HANDLE process, const WCHAR *name, SYMBOL_INFOW *symbol)
  {
      SYMBOL_INFO *si;
      DWORD len;
      char *tmp;
      BOOL ret;
  
      TRACE("(%p, %s, %p)\n", process, debugstr_w(name), symbol);
  
      len = sizeof(*si) + symbol->MaxNameLen;
      if (!(si = HeapAlloc(GetProcessHeap(), 0, len))) return FALSE;
  
      len = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
      if (!(tmp = HeapAlloc(GetProcessHeap(), 0, len)))
      {
          HeapFree(GetProcessHeap(), 0, si);
          return FALSE;
      }
      WideCharToMultiByte(CP_ACP, 0, name, -1, tmp, len, NULL, NULL);
  
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = symbol->MaxNameLen;
      if ((ret = SymFromName(process, tmp, si)))
          copy_symbolW(symbol, si);
  
      HeapFree(GetProcessHeap(), 0, tmp);
      HeapFree(GetProcessHeap(), 0, si);
      return ret;
  }
  
  /***********************************************************************
   *		SymGetSymFromName64 (DBGHELP.@)
   */
  BOOL WINAPI SymGetSymFromName64(HANDLE hProcess, PCSTR Name, PIMAGEHLP_SYMBOL64 Symbol)
  {
      char        buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
      SYMBOL_INFO*si = (SYMBOL_INFO*)buffer;
      size_t      len;
  
      if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = MAX_SYM_NAME;
      if (!SymFromName(hProcess, Name, si)) return FALSE;
  
      Symbol->Address = si->Address;
      Symbol->Size    = si->Size;
      Symbol->Flags   = si->Flags;
      len = min(Symbol->MaxNameLength, si->MaxNameLen);
      lstrcpynA(Symbol->Name, si->Name, len);
      return TRUE;
  }
  
  /***********************************************************************
   *		SymGetSymFromName (DBGHELP.@)
   */
  BOOL WINAPI SymGetSymFromName(HANDLE hProcess, PCSTR Name, PIMAGEHLP_SYMBOL Symbol)
  {
      char        buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
      SYMBOL_INFO*si = (SYMBOL_INFO*)buffer;
      size_t      len;
  
      if (Symbol->SizeOfStruct < sizeof(*Symbol)) return FALSE;
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = MAX_SYM_NAME;
      if (!SymFromName(hProcess, Name, si)) return FALSE;
  
      Symbol->Address = si->Address;
      Symbol->Size    = si->Size;
      Symbol->Flags   = si->Flags;
      len = min(Symbol->MaxNameLength, si->MaxNameLen);
      lstrcpynA(Symbol->Name, si->Name, len);
      return TRUE;
  }
  
  struct internal_line_t
  {
      BOOL                        unicode;
      PVOID                       key;
      DWORD                       line_number;
      union
      {
          CHAR*                   file_nameA;
          WCHAR*                  file_nameW;
      };
      DWORD64                     address;
  };
  
  static void init_internal_line(struct internal_line_t* intl, BOOL unicode)
  {
      intl->unicode = unicode;
      intl->key = NULL;
      intl->line_number = 0;
      intl->file_nameA = NULL;
      intl->address = 0;
  }
  
  static BOOL internal_line_copy_toA32(const struct internal_line_t* intl, IMAGEHLP_LINE* l32)
  {
      if (intl->unicode) return FALSE;
      l32->Key = intl->key;
      l32->LineNumber = intl->line_number;
      l32->FileName = intl->file_nameA;
      l32->Address = intl->address;
      return TRUE;
  }
  
  static BOOL internal_line_copy_toA64(const struct internal_line_t* intl, IMAGEHLP_LINE64* l64)
  {
      if (intl->unicode) return FALSE;
      l64->Key = intl->key;
      l64->LineNumber = intl->line_number;
      l64->FileName = intl->file_nameA;
      l64->Address = intl->address;
      return TRUE;
  }
  
  static BOOL internal_line_copy_toW64(const struct internal_line_t* intl, IMAGEHLP_LINEW64* l64)
  {
      if (!intl->unicode) return FALSE;
      l64->Key = intl->key;
      l64->LineNumber = intl->line_number;
      l64->FileName = intl->file_nameW;
      l64->Address = intl->address;
      return TRUE;
  }
  
  static BOOL internal_line_set_nameA(struct process* pcs, struct internal_line_t* intl, char* str, BOOL copy)
  {
      DWORD len;
  
      if (intl->unicode)
      {
          len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);
          if (!(intl->file_nameW = fetch_buffer(pcs, len * sizeof(WCHAR)))) return FALSE;
          MultiByteToWideChar(CP_ACP, 0, str, -1, intl->file_nameW, len);
      }
      else
      {
          if (copy)
          {
              len = strlen(str) + 1;
              if (!(intl->file_nameA = fetch_buffer(pcs, len))) return FALSE;
              memcpy(intl->file_nameA, str, len);
          }
          else
              intl->file_nameA = str;
      }
      return TRUE;
  }
  
  static BOOL internal_line_set_nameW(struct process* pcs, struct internal_line_t* intl, WCHAR* wstr, BOOL copy)
  {
      DWORD len;
  
      if (intl->unicode)
      {
          if (copy)
          {
              len = (lstrlenW(wstr) + 1) * sizeof(WCHAR);
              if (!(intl->file_nameW = fetch_buffer(pcs, len))) return FALSE;
              memcpy(intl->file_nameW, wstr, len);
          }
          else
              intl->file_nameW = wstr;
      }
      else
      {
          DWORD len = WideCharToMultiByte(CP_ACP, 0, wstr, -1, NULL, 0, NULL, NULL);
          if (!(intl->file_nameA = fetch_buffer(pcs, len))) return FALSE;
          WideCharToMultiByte(CP_ACP, 0, wstr, -1, intl->file_nameA, len, NULL, NULL);
      }
      return TRUE;
  }
  
  static BOOL get_line_from_function(struct module_pair* pair, struct symt_function* func, DWORD64 addr,
                                     PDWORD pdwDisplacement, struct internal_line_t* intl)
  {
      struct line_info*           dli = NULL;
      struct line_info*           found_dli = NULL;
      int                         i;
  
      for (i = vector_length(&func->vlines) - 1; i >= 0; i--)
      {
          dli = vector_at(&func->vlines, i);
          if (!dli->is_source_file)
          {
              if (found_dli || dli->u.address > addr) continue;
              intl->line_number = dli->line_number;
              intl->address     = dli->u.address;
              intl->key         = dli;
              found_dli = dli;
              continue;
          }
          if (found_dli)
          {
              BOOL ret;
              if (dbghelp_opt_native)
              {
                  /* Return native file paths when using winedbg */
                  ret = internal_line_set_nameA(pair->pcs, intl, (char*)source_get(pair->effective, dli->u.source_file), FALSE);
              }
              else
              {
                  WCHAR *dospath = wine_get_dos_file_name(source_get(pair->effective, dli->u.source_file));
                  ret = internal_line_set_nameW(pair->pcs, intl, dospath, TRUE);
                  HeapFree( GetProcessHeap(), 0, dospath );
              }
              if (ret) *pdwDisplacement = addr - found_dli->u.address;
              return ret;
          }
      }
      return FALSE;
  }
  
  /******************************************************************
   *		get_line_from_addr
   *
   * fills source file information from an address
   */
  static BOOL get_line_from_addr(HANDLE hProcess, DWORD64 addr,
                                 PDWORD pdwDisplacement, struct internal_line_t* intl)
  {
      struct module_pair          pair;
      struct symt_ht*             symt;
  
      if (!module_init_pair(&pair, hProcess, addr)) return FALSE;
      if ((symt = symt_find_symbol_at(pair.effective, addr)) == NULL) return FALSE;
  
      if (symt->symt.tag != SymTagFunction && symt->symt.tag != SymTagInlineSite) return FALSE;
      return get_line_from_function(&pair, (struct symt_function*)symt, addr, pdwDisplacement, intl);
  }
  
  /***********************************************************************
   *		SymGetSymNext64 (DBGHELP.@)
   */
  BOOL WINAPI SymGetSymNext64(HANDLE hProcess, PIMAGEHLP_SYMBOL64 Symbol)
  {
      /* algo:
       * get module from Symbol.Address
       * get index in module.addr_sorttab of Symbol.Address
       * increment index
       * if out of module bounds, move to next module in process address space
       */
      FIXME("(%p, %p): stub\n", hProcess, Symbol);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /***********************************************************************
   *		SymGetSymNext (DBGHELP.@)
   */
  BOOL WINAPI SymGetSymNext(HANDLE hProcess, PIMAGEHLP_SYMBOL Symbol)
  {
      FIXME("(%p, %p): stub\n", hProcess, Symbol);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /***********************************************************************
   *		SymGetSymPrev64 (DBGHELP.@)
   */
  BOOL WINAPI SymGetSymPrev64(HANDLE hProcess, PIMAGEHLP_SYMBOL64 Symbol)
  {
      FIXME("(%p, %p): stub\n", hProcess, Symbol);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /***********************************************************************
   *		SymGetSymPrev (DBGHELP.@)
   */
  BOOL WINAPI SymGetSymPrev(HANDLE hProcess, PIMAGEHLP_SYMBOL Symbol)
  {
      FIXME("(%p, %p): stub\n", hProcess, Symbol);
      SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
      return FALSE;
  }
  
  /******************************************************************
   *		SymGetLineFromAddr (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineFromAddr(HANDLE hProcess, DWORD dwAddr,
                                 PDWORD pdwDisplacement, PIMAGEHLP_LINE Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, FALSE);
      if (!get_line_from_addr(hProcess, dwAddr, pdwDisplacement, &intl)) return FALSE;
      return internal_line_copy_toA32(&intl, Line);
  }
  
  /******************************************************************
   *		SymGetLineFromAddr64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineFromAddr64(HANDLE hProcess, DWORD64 dwAddr, 
                                   PDWORD pdwDisplacement, PIMAGEHLP_LINE64 Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, FALSE);
      if (!get_line_from_addr(hProcess, dwAddr, pdwDisplacement, &intl)) return FALSE;
      return internal_line_copy_toA64(&intl, Line);
  }
  
  /******************************************************************
   *		SymGetLineFromAddrW64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineFromAddrW64(HANDLE hProcess, DWORD64 dwAddr, 
                                    PDWORD pdwDisplacement, PIMAGEHLP_LINEW64 Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, TRUE);
      if (!get_line_from_addr(hProcess, dwAddr, pdwDisplacement, &intl)) return FALSE;
      return internal_line_copy_toW64(&intl, Line);
  }
  
  static BOOL symt_get_func_line_prev(HANDLE hProcess, struct internal_line_t* intl, void* key, DWORD64 addr)
  {
      struct module_pair  pair;
      struct line_info*   li;
      struct line_info*   srcli;
  
      if (!module_init_pair(&pair, hProcess, addr)) return FALSE;
  
      if (key == NULL) return FALSE;
  
      li = key;
  
      while (!li->is_first)
      {
          li--;
          if (!li->is_source_file)
          {
              intl->line_number = li->line_number;
              intl->address     = li->u.address;
              intl->key         = li;
              /* search source file */
              for (srcli = li; !srcli->is_source_file; srcli--);
  
              return internal_line_set_nameA(pair.pcs, intl, (char*)source_get(pair.effective, srcli->u.source_file), FALSE);
          }
      }
      SetLastError(ERROR_NO_MORE_ITEMS); /* FIXME */
      return FALSE;
  }
  
  /******************************************************************
   *             SymGetLinePrev64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLinePrev64(HANDLE hProcess, PIMAGEHLP_LINE64 Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, FALSE);
      if (!symt_get_func_line_prev(hProcess, &intl, Line->Key, Line->Address)) return FALSE;
      return internal_line_copy_toA64(&intl, Line);
  }
  
  /******************************************************************
   *             SymGetLinePrev (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLinePrev(HANDLE hProcess, PIMAGEHLP_LINE Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, FALSE);
      if (!symt_get_func_line_prev(hProcess, &intl, Line->Key, Line->Address)) return FALSE;
      return internal_line_copy_toA32(&intl, Line);
  }
  
  /******************************************************************
   *             SymGetLinePrevW64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLinePrevW64(HANDLE hProcess, PIMAGEHLP_LINEW64 Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, TRUE);
      if (!symt_get_func_line_prev(hProcess, &intl, Line->Key, Line->Address)) return FALSE;
      return internal_line_copy_toW64(&intl, Line);
  }
  
  static BOOL symt_get_func_line_next(HANDLE hProcess, struct internal_line_t* intl, void* key, DWORD64 addr)
  {
      struct module_pair  pair;
      struct line_info*   li;
      struct line_info*   srcli;
  
      if (key == NULL) return FALSE;
      if (!module_init_pair(&pair, hProcess, addr)) return FALSE;
  
      /* search current source file */
      for (srcli = key; !srcli->is_source_file; srcli--);
  
      li = key;
      while (!li->is_last)
      {
          li++;
          if (!li->is_source_file)
          {
              intl->line_number = li->line_number;
              intl->address     = li->u.address;
              intl->key         = li;
              return internal_line_set_nameA(pair.pcs, intl, (char*)source_get(pair.effective, srcli->u.source_file), FALSE);
          }
          srcli = li;
      }
      SetLastError(ERROR_NO_MORE_ITEMS); /* FIXME */
      return FALSE;
  }
  
  /******************************************************************
   *		SymGetLineNext64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineNext64(HANDLE hProcess, PIMAGEHLP_LINE64 Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, FALSE);
      if (!symt_get_func_line_next(hProcess, &intl, Line->Key, Line->Address)) return FALSE;
      return internal_line_copy_toA64(&intl, Line);
  }
  
  /******************************************************************
   *		SymGetLineNext (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineNext(HANDLE hProcess, PIMAGEHLP_LINE Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, FALSE);
      if (!symt_get_func_line_next(hProcess, &intl, Line->Key, Line->Address)) return FALSE;
      return internal_line_copy_toA32(&intl, Line);
  }
  
  /******************************************************************
   *		SymGetLineNextW64 (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineNextW64(HANDLE hProcess, PIMAGEHLP_LINEW64 Line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p %p)\n", hProcess, Line);
  
      if (Line->SizeOfStruct < sizeof(*Line)) return FALSE;
      init_internal_line(&intl, TRUE);
      if (!symt_get_func_line_next(hProcess, &intl, Line->Key, Line->Address)) return FALSE;
      return internal_line_copy_toW64(&intl, Line);
  }
  
  /***********************************************************************
   *		SymUnDName (DBGHELP.@)
   */
  BOOL WINAPI SymUnDName(PIMAGEHLP_SYMBOL sym, PSTR UnDecName, DWORD UnDecNameLength)
  {
      return UnDecorateSymbolName(sym->Name, UnDecName, UnDecNameLength,
                                  UNDNAME_COMPLETE) != 0;
  }
  
  /***********************************************************************
   *		SymUnDName64 (DBGHELP.@)
   */
  BOOL WINAPI SymUnDName64(PIMAGEHLP_SYMBOL64 sym, PSTR UnDecName, DWORD UnDecNameLength)
  {
      return UnDecorateSymbolName(sym->Name, UnDecName, UnDecNameLength,
                                  UNDNAME_COMPLETE) != 0;
  }
  
  /***********************************************************************
   *		UnDecorateSymbolName (DBGHELP.@)
   */
  DWORD WINAPI UnDecorateSymbolName(const char *decorated_name, char *undecorated_name,
                                    DWORD undecorated_length, DWORD flags)
  {
      TRACE("(%s, %p, %ld, 0x%08lx)\n",
            debugstr_a(decorated_name), undecorated_name, undecorated_length, flags);
  
      if (!undecorated_name || !undecorated_length)
          return 0;
      if (!__unDName(undecorated_name, decorated_name, undecorated_length, malloc, free, flags))
          return 0;
      return strlen(undecorated_name);
  }
  
  /***********************************************************************
   *		UnDecorateSymbolNameW (DBGHELP.@)
   */
  DWORD WINAPI UnDecorateSymbolNameW(const WCHAR *decorated_name, WCHAR *undecorated_name,
                                     DWORD undecorated_length, DWORD flags)
  {
      char *buf, *ptr;
      int len, ret = 0;
  
      TRACE("(%s, %p, %ld, 0x%08lx)\n",
            debugstr_w(decorated_name), undecorated_name, undecorated_length, flags);
  
      if (!undecorated_name || !undecorated_length)
          return 0;
  
      len = WideCharToMultiByte(CP_ACP, 0, decorated_name, -1, NULL, 0, NULL, NULL);
      if ((buf = HeapAlloc(GetProcessHeap(), 0, len)))
      {
          WideCharToMultiByte(CP_ACP, 0, decorated_name, -1, buf, len, NULL, NULL);
          if ((ptr = __unDName(NULL, buf, 0, malloc, free, flags)))
          {
              MultiByteToWideChar(CP_ACP, 0, ptr, -1, undecorated_name, undecorated_length);
              undecorated_name[undecorated_length - 1] = 0;
              ret = lstrlenW(undecorated_name);
              free(ptr);
          }
          HeapFree(GetProcessHeap(), 0, buf);
      }
  
      return ret;
  }
  
  #define WILDCHAR(x)      (-(x))
  
  static  int     re_fetch_char(const WCHAR** re)
  {
      switch (**re)
      {
      case '\\': (*re)++; return *(*re)++;
      case '*': case '[': case '?': case '+': case '#': case ']': return WILDCHAR(*(*re)++);
      default: return *(*re)++;
      }
  }
  
  static inline int  re_match_char(WCHAR ch1, WCHAR ch2, BOOL _case)
  {
      return _case ? ch1 - ch2 : towupper(ch1) - towupper(ch2);
  }
  
  static const WCHAR* re_match_one(const WCHAR* string, const WCHAR* elt, BOOL _case)
  {
      int         ch1, prev = 0;
      unsigned    state = 0;
  
      switch (ch1 = re_fetch_char(&elt))
      {
      default:
          return (ch1 >= 0 && re_match_char(*string, ch1, _case) == 0) ? ++string : NULL;
      case WILDCHAR('?'): return *string ? ++string : NULL;
      case WILDCHAR('*'): assert(0);
      case WILDCHAR('['): break;
      }
  
      for (;;)
      {
          ch1 = re_fetch_char(&elt);
          if (ch1 == WILDCHAR(']')) return NULL;
          if (state == 1 && ch1 == '-') state = 2;
          else
          {
              if (re_match_char(*string, ch1, _case) == 0) return ++string;
              switch (state)
              {
              case 0:
                  state = 1;
                  prev = ch1;
                  break;
              case 1:
                  state = 0;
                  break;
              case 2:
                  if (prev >= 0 && ch1 >= 0 && re_match_char(prev, *string, _case) <= 0 &&
                      re_match_char(*string, ch1, _case) <= 0)
                      return ++string;
                  state = 0;
                  break;
              }
          }
      }
  }
  
  /******************************************************************
   *		re_match_multi
   *
   * match a substring of *pstring according to *pre regular expression
   * pstring and pre are only updated in case of successful match
   */
  static BOOL re_match_multi(const WCHAR** pstring, const WCHAR** pre, BOOL _case)
  {
      const WCHAR* re_end = *pre;
      const WCHAR* string_end = *pstring;
      const WCHAR* re_beg;
      const WCHAR* string_beg;
      const WCHAR* next;
      int          ch;
  
      while (*re_end && *string_end)
      {
          string_beg = string_end;
          re_beg = re_end;
          switch (ch = re_fetch_char(&re_end))
          {
          case WILDCHAR(']'): case WILDCHAR('+'): case WILDCHAR('#'): return FALSE;
          case WILDCHAR('*'):
              /* transform '*' into '?#' */
              re_beg = L"?";
              goto closure;
          case WILDCHAR('['):
              do
              {
                  if (!(ch = re_fetch_char(&re_end))) return FALSE;
              } while (ch != WILDCHAR(']'));
              /* fall through */
          case WILDCHAR('?'):
          default:
              break;
          }
  
          switch (*re_end)
          {
          case '+':
              if (!(next = re_match_one(string_end, re_beg, _case))) return FALSE;
              string_beg++;
              /* fall through */
          case '#':
              re_end++;
          closure:
              while ((next = re_match_one(string_end, re_beg, _case))) string_end = next;
              for ( ; string_end >= string_beg; string_end--)
              {
                  if (re_match_multi(&string_end, &re_end, _case)) goto found;
              }
              return FALSE;
          default:
              if (!(next = re_match_one(string_end, re_beg, _case))) return FALSE;
              string_end = next;
          }
      }
  
      if (*re_end || *string_end) return FALSE;
  
  found:
      *pre = re_end;
      *pstring = string_end;
      return TRUE;
  }
  
  /******************************************************************
   *		SymMatchStringA (DBGHELP.@)
   *
   */
  BOOL WINAPI SymMatchStringA(PCSTR string, PCSTR re, BOOL _case)
  {
      WCHAR*      strW;
      WCHAR*      reW;
      BOOL        ret = FALSE;
      DWORD       sz;
  
      if (!string || !re)
      {
          SetLastError(ERROR_INVALID_HANDLE);
          return FALSE;
      }
      TRACE("%s %s %c\n", string, re, _case ? 'Y' : 'N');
  
      sz = MultiByteToWideChar(CP_ACP, 0, string, -1, NULL, 0);
      if ((strW = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
          MultiByteToWideChar(CP_ACP, 0, string, -1, strW, sz);
      sz = MultiByteToWideChar(CP_ACP, 0, re, -1, NULL, 0);
      if ((reW = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
          MultiByteToWideChar(CP_ACP, 0, re, -1, reW, sz);
  
      if (strW && reW)
          ret = SymMatchStringW(strW, reW, _case);
      HeapFree(GetProcessHeap(), 0, strW);
      HeapFree(GetProcessHeap(), 0, reW);
      return ret;
  }
  
  /******************************************************************
   *		SymMatchStringW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymMatchStringW(PCWSTR string, PCWSTR re, BOOL _case)
  {
      TRACE("%s %s %c\n", debugstr_w(string), debugstr_w(re), _case ? 'Y' : 'N');
  
      if (!string || !re)
      {
          SetLastError(ERROR_INVALID_HANDLE);
          return FALSE;
      }
      return re_match_multi(&string, &re, _case);
  }
  
  static inline BOOL doSymSearch(HANDLE hProcess, ULONG64 BaseOfDll, DWORD Index,
                                 DWORD SymTag, PCWSTR Mask, DWORD64 Address,
                                 PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
                                 PVOID UserContext, DWORD Options)
  {
      struct sym_enum     se;
  
      if (Options != SYMSEARCH_GLOBALSONLY)
      {
          FIXME("Unsupported searching with options (%lx)\n", Options);
          SetLastError(ERROR_INVALID_PARAMETER);
          return FALSE;
      }
  
      se.cb = EnumSymbolsCallback;
      se.user = UserContext;
      se.index = Index;
      se.tag = SymTag;
      se.addr = Address;
      se.sym_info = (PSYMBOL_INFO)se.buffer;
  
      return sym_enum(hProcess, BaseOfDll, Mask, &se);
  }
  
  /******************************************************************
   *		SymSearch (DBGHELP.@)
   */
  BOOL WINAPI SymSearch(HANDLE hProcess, ULONG64 BaseOfDll, DWORD Index,
                        DWORD SymTag, PCSTR Mask, DWORD64 Address,
                        PSYM_ENUMERATESYMBOLS_CALLBACK EnumSymbolsCallback,
                        PVOID UserContext, DWORD Options)
  {
      LPWSTR      maskW = NULL;
      BOOLEAN     ret;
  
      TRACE("(%p %s %lu %lu %s %s %p %p %lx)\n",
            hProcess, wine_dbgstr_longlong(BaseOfDll), Index, SymTag, Mask,
            wine_dbgstr_longlong(Address), EnumSymbolsCallback,
            UserContext, Options);
  
      if (Mask)
      {
          DWORD sz = MultiByteToWideChar(CP_ACP, 0, Mask, -1, NULL, 0);
  
          if (!(maskW = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
              return FALSE;
          MultiByteToWideChar(CP_ACP, 0, Mask, -1, maskW, sz);
      }
      ret = doSymSearch(hProcess, BaseOfDll, Index, SymTag, maskW, Address,
                        EnumSymbolsCallback, UserContext, Options);
      HeapFree(GetProcessHeap(), 0, maskW);
      return ret;
  }
  
  /******************************************************************
   *		SymSearchW (DBGHELP.@)
   */
  BOOL WINAPI SymSearchW(HANDLE hProcess, ULONG64 BaseOfDll, DWORD Index,
                         DWORD SymTag, PCWSTR Mask, DWORD64 Address,
                         PSYM_ENUMERATESYMBOLS_CALLBACKW EnumSymbolsCallback,
                         PVOID UserContext, DWORD Options)
  {
      struct sym_enumW    sew;
  
      TRACE("(%p %s %lu %lu %s %s %p %p %lx)\n",
            hProcess, wine_dbgstr_longlong(BaseOfDll), Index, SymTag, debugstr_w(Mask),
            wine_dbgstr_longlong(Address), EnumSymbolsCallback,
            UserContext, Options);
  
      sew.ctx = UserContext;
      sew.cb = EnumSymbolsCallback;
      sew.sym_info = (PSYMBOL_INFOW)sew.buffer;
  
      return doSymSearch(hProcess, BaseOfDll, Index, SymTag, Mask, Address,
                         sym_enumW, &sew, Options);
  }
  
  /******************************************************************
   *		SymAddSymbol (DBGHELP.@)
   *
   */
  BOOL WINAPI SymAddSymbol(HANDLE hProcess, ULONG64 BaseOfDll, PCSTR name,
                           DWORD64 addr, DWORD size, DWORD flags)
  {
      struct module_pair  pair;
  
      TRACE("(%p %s %s %lu)\n", hProcess, wine_dbgstr_a(name), wine_dbgstr_longlong(addr), size);
  
      if (!module_init_pair(&pair, hProcess, BaseOfDll)) return FALSE;
  
      return symt_new_custom(pair.effective, name, addr, size) != NULL;
  }
  
  /******************************************************************
   *		SymAddSymbolW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymAddSymbolW(HANDLE hProcess, ULONG64 BaseOfDll, PCWSTR nameW,
                            DWORD64 addr, DWORD size, DWORD flags)
  {
      char       name[MAX_SYM_NAME];
  
      TRACE("(%p %s %s %lu)\n", hProcess, wine_dbgstr_w(nameW), wine_dbgstr_longlong(addr), size);
  
      WideCharToMultiByte(CP_ACP, 0, nameW, -1, name, ARRAY_SIZE(name), NULL, NULL);
  
      return SymAddSymbol(hProcess, BaseOfDll, name, addr, size, flags);
  }
  
  /******************************************************************
   *		SymEnumLines (DBGHELP.@)
   *
   */
  BOOL WINAPI SymEnumLines(HANDLE hProcess, ULONG64 base, PCSTR compiland,
                           PCSTR srcfile, PSYM_ENUMLINES_CALLBACK cb, PVOID user)
  {
      struct module_pair          pair;
      struct hash_table_iter      hti;
      struct symt_ht*             sym;
      WCHAR*                      srcmask;
      struct line_info*           dli;
      void*                       ptr;
      SRCCODEINFO                 sci;
      const char*                 file;
  
      if (!cb) return FALSE;
      if (!(dbghelp_options & SYMOPT_LOAD_LINES)) return TRUE;
  
      if (!module_init_pair(&pair, hProcess, base)) return FALSE;
      if (compiland) FIXME("Unsupported yet (filtering on compiland %s)\n", compiland);
      if (!(srcmask = file_regex(srcfile))) return FALSE;
  
      sci.SizeOfStruct = sizeof(sci);
      sci.ModBase      = base;
  
      hash_table_iter_init(&pair.effective->ht_symbols, &hti, NULL);
      while ((ptr = hash_table_iter_up(&hti)))
      {
          unsigned int    i;
  
          sym = CONTAINING_RECORD(ptr, struct symt_ht, hash_elt);
          if (sym->symt.tag != SymTagFunction) continue;
  
          sci.FileName[0] = '\0';
          for (i=0; i<vector_length(&((struct symt_function*)sym)->vlines); i++)
          {
              dli = vector_at(&((struct symt_function*)sym)->vlines, i);
              if (dli->is_source_file)
              {
                  file = source_get(pair.effective, dli->u.source_file);
                  if (!file) sci.FileName[0] = '\0';
                  else
                  {
                      DWORD   sz = MultiByteToWideChar(CP_ACP, 0, file, -1, NULL, 0);
                      WCHAR*  fileW;
  
                      if ((fileW = HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR))))
                          MultiByteToWideChar(CP_ACP, 0, file, -1, fileW, sz);
                      if (SymMatchStringW(fileW, srcmask, FALSE))
                          strcpy(sci.FileName, file);
                      else
                          sci.FileName[0] = '\0';
                      HeapFree(GetProcessHeap(), 0, fileW);
                  }
              }
              else if (sci.FileName[0])
              {
                  sci.Key = dli;
                  sci.Obj[0] = '\0'; /* FIXME */
                  sci.LineNumber = dli->line_number;
                  sci.Address = dli->u.address;
                  if (!cb(&sci, user)) break;
              }
          }
      }
      HeapFree(GetProcessHeap(), 0, srcmask);
      return TRUE;
  }
  
  BOOL WINAPI SymGetLineFromName(HANDLE hProcess, PCSTR ModuleName, PCSTR FileName,
                  DWORD dwLineNumber, PLONG plDisplacement, PIMAGEHLP_LINE Line)
  {
      FIXME("(%p) (%s, %s, %ld %p %p): stub\n", hProcess, ModuleName, FileName,
                  dwLineNumber, plDisplacement, Line);
      return FALSE;
  }
  
  BOOL WINAPI SymGetLineFromName64(HANDLE hProcess, PCSTR ModuleName, PCSTR FileName,
                  DWORD dwLineNumber, PLONG lpDisplacement, PIMAGEHLP_LINE64 Line)
  {
      FIXME("(%p) (%s, %s, %ld %p %p): stub\n", hProcess, ModuleName, FileName,
                  dwLineNumber, lpDisplacement, Line);
      return FALSE;
  }
  
  BOOL WINAPI SymGetLineFromNameW64(HANDLE hProcess, PCWSTR ModuleName, PCWSTR FileName,
                  DWORD dwLineNumber, PLONG plDisplacement, PIMAGEHLP_LINEW64 Line)
  {
      FIXME("(%p) (%s, %s, %ld %p %p): stub\n", hProcess, debugstr_w(ModuleName), debugstr_w(FileName),
                  dwLineNumber, plDisplacement, Line);
      return FALSE;
  }
  
  /******************************************************************
   *		SymFromIndex (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromIndex(HANDLE hProcess, ULONG64 BaseOfDll, DWORD index, PSYMBOL_INFO symbol)
  {
      FIXME("hProcess = %p, BaseOfDll = %s, index = %ld, symbol = %p\n",
            hProcess, wine_dbgstr_longlong(BaseOfDll), index, symbol);
  
      return FALSE;
  }
  
  /******************************************************************
   *		SymFromIndexW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromIndexW(HANDLE hProcess, ULONG64 BaseOfDll, DWORD index, PSYMBOL_INFOW symbol)
  {
      FIXME("hProcess = %p, BaseOfDll = %s, index = %ld, symbol = %p\n",
            hProcess, wine_dbgstr_longlong(BaseOfDll), index, symbol);
  
      return FALSE;
  }
  
  /******************************************************************
   *		SymSetHomeDirectory (DBGHELP.@)
   *
   */
  PCHAR WINAPI SymSetHomeDirectory(HANDLE hProcess, PCSTR dir)
  {
      FIXME("(%p, %s): stub\n", hProcess, dir);
  
      return NULL;
  }
  
  /******************************************************************
   *		SymSetHomeDirectoryW (DBGHELP.@)
   *
   */
  PWSTR WINAPI SymSetHomeDirectoryW(HANDLE hProcess, PCWSTR dir)
  {
      FIXME("(%p, %s): stub\n", hProcess, debugstr_w(dir));
  
      return NULL;
  }
  
  /******************************************************************
   *		SymFromInlineContext (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromInlineContext(HANDLE hProcess, DWORD64 addr, ULONG inline_ctx, PDWORD64 disp, PSYMBOL_INFO si)
  {
      struct module_pair pair;
      struct symt_inlinesite* inlined;
  
      TRACE("(%p, %#I64x, 0x%lx, %p, %p)\n", hProcess, addr, inline_ctx, disp, si);
  
      switch (IFC_MODE(inline_ctx))
      {
      case IFC_MODE_IGNORE:
      case IFC_MODE_REGULAR:
          return SymFromAddr(hProcess, addr, disp, si);
      case IFC_MODE_INLINE:
          if (!module_init_pair(&pair, hProcess, addr)) return FALSE;
          inlined = symt_find_inlined_site(pair.effective, addr, inline_ctx);
          if (inlined)
          {
              symt_fill_sym_info(&pair, NULL, &inlined->func.symt, si);
              *disp = addr - inlined->func.address;
              return TRUE;
          }
          /* fall through */
      default:
          SetLastError(ERROR_INVALID_PARAMETER);
          return FALSE;
      }
  }
  
  /******************************************************************
   *		SymFromInlineContextW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymFromInlineContextW(HANDLE hProcess, DWORD64 addr, ULONG inline_ctx, PDWORD64 disp, PSYMBOL_INFOW siW)
  {
      PSYMBOL_INFO        si;
      unsigned            len;
      BOOL                ret;
  
      TRACE("(%p, %#I64x, 0x%lx, %p, %p)\n", hProcess, addr, inline_ctx, disp, siW);
  
      len = sizeof(*si) + siW->MaxNameLen * sizeof(WCHAR);
      si = HeapAlloc(GetProcessHeap(), 0, len);
      if (!si) return FALSE;
  
      si->SizeOfStruct = sizeof(*si);
      si->MaxNameLen = siW->MaxNameLen;
      if ((ret = SymFromInlineContext(hProcess, addr, inline_ctx, disp, si)))
      {
          copy_symbolW(siW, si);
      }
      HeapFree(GetProcessHeap(), 0, si);
      return ret;
  }
  
  static BOOL get_line_from_inline_context(HANDLE hProcess, DWORD64 addr, ULONG inline_ctx, DWORD64 mod_addr, PDWORD disp,
                                           struct internal_line_t* intl)
  {
      struct module_pair pair;
      struct symt_inlinesite* inlined;
  
      if (!module_init_pair(&pair, hProcess, mod_addr ? mod_addr : addr)) return FALSE;
      switch (IFC_MODE(inline_ctx))
      {
      case IFC_MODE_INLINE:
          inlined = symt_find_inlined_site(pair.effective, addr, inline_ctx);
          if (inlined && get_line_from_function(&pair, &inlined->func, addr, disp, intl))
              return TRUE;
          /* fall through: check if we can find line info at top function level */
      case IFC_MODE_IGNORE:
      case IFC_MODE_REGULAR:
          return get_line_from_addr(hProcess, addr, disp, intl);
      default:
          SetLastError(ERROR_INVALID_PARAMETER);
          return FALSE;
      }
  }
  
  /******************************************************************
   *		SymGetLineFromInlineContext (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineFromInlineContext(HANDLE hProcess, DWORD64 addr, ULONG inline_ctx, DWORD64 mod_addr, PDWORD disp, PIMAGEHLP_LINE64 line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p, %#I64x, 0x%lx, %#I64x, %p, %p)\n",
            hProcess, addr, inline_ctx, mod_addr, disp, line);
  
      if (line->SizeOfStruct < sizeof(*line)) return FALSE;
      init_internal_line(&intl, FALSE);
  
      if (!get_line_from_inline_context(hProcess, addr, inline_ctx, mod_addr, disp, &intl)) return FALSE;
      return internal_line_copy_toA64(&intl, line);
  }
  
  /******************************************************************
   *		SymGetLineFromInlineContextW (DBGHELP.@)
   *
   */
  BOOL WINAPI SymGetLineFromInlineContextW(HANDLE hProcess, DWORD64 addr, ULONG inline_ctx, DWORD64 mod_addr, PDWORD disp, PIMAGEHLP_LINEW64 line)
  {
      struct internal_line_t intl;
  
      TRACE("(%p, %#I64x, 0x%lx, %#I64x, %p, %p)\n",
            hProcess, addr, inline_ctx, mod_addr, disp, line);
  
      if (line->SizeOfStruct < sizeof(*line)) return FALSE;
      init_internal_line(&intl, TRUE);
  
      if (!get_line_from_inline_context(hProcess, addr, inline_ctx, mod_addr, disp, &intl)) return FALSE;
      return internal_line_copy_toW64(&intl, line);
  }
  