programs/winedbg/symbol.c

   1 /*
   2  * Generate hash tables for Wine debugger symbols
   3  *
   4  * Copyright (C) 1993, Eric Youngdale.
   5  *               2004-2005, Eric Pouech.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #define NONAMELESSUNION
  23 #define NONAMELESSSTRUCT
  24
  25 #include "config.h"
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include "debugger.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
  34
  35 static BOOL symbol_get_debug_start(const struct dbg_type* func, ULONG64* start)
  36 {
  37     DWORD                       count, tag;
  38     char                        buffer[sizeof(TI_FINDCHILDREN_PARAMS) + 256 * sizeof(DWORD)];
  39     TI_FINDCHILDREN_PARAMS*     fcp = (TI_FINDCHILDREN_PARAMS*)buffer;
  40     int                         i;
  41     struct dbg_type             child;
  42
  43     if (!func->id) return FALSE; /* native dbghelp not always fills the info field */
  44
  45     if (!types_get_info(func, TI_GET_CHILDRENCOUNT, &count)) return FALSE;
  46     fcp->Start = 0;
  47     while (count)
  48     {
  49         fcp->Count = min(count, 256);
  50         if (types_get_info(func, TI_FINDCHILDREN, fcp))
  51         {
  52             for (i = 0; i < min(fcp->Count, count); i++)
  53             {
  54                 child.module = func->module;
  55                 child.id = fcp->ChildId[i];
  56                 types_get_info(&child, TI_GET_SYMTAG, &tag);
  57                 if (tag != SymTagFuncDebugStart) continue;
  58                 return types_get_info(&child, TI_GET_ADDRESS, start);
  59             }
  60             count -= min(count, 256);
  61             fcp->Start += 256;
  62             fcp->Start += 256;
  63         }
  64     }
  65     return FALSE;
  66 }
  67
  68 static BOOL fill_sym_lvalue(const SYMBOL_INFO* sym, ULONG_PTR base,
  69                             struct dbg_lvalue* lvalue, char* buffer, size_t sz)
  70 {
  71     if (buffer) buffer[0] = '\0';
  72     if (sym->Flags & SYMFLAG_REGISTER)
  73     {
  74         DWORD_PTR* pval;
  75
  76         if (!memory_get_register(sym->Register, &pval, buffer, sz))
  77             return FALSE;
  78         lvalue->cookie = DLV_HOST;
  79         lvalue->addr.Offset = (DWORD_PTR)pval;
  80     }
  81     else if (sym->Flags & SYMFLAG_REGREL)
  82     {
  83         DWORD_PTR* pval;
  84
  85         if (!memory_get_register(sym->Register, &pval, buffer, sz))
  86             return FALSE;
  87         lvalue->cookie = DLV_TARGET;
  88         lvalue->addr.Offset = (ULONG64)*pval + sym->Address;
  89     }
  90     else if (sym->Flags & SYMFLAG_VALUEPRESENT)
  91     {
  92         struct dbg_type type;
  93         VARIANT         v;
  94
  95         type.module = sym->ModBase;
  96         type.id = sym->info;
  97
  98         if (!types_get_info(&type, TI_GET_VALUE, &v))
  99         {
 100             if (buffer) snprintf(buffer, sz, "Couldn't get full value information for %s", sym->Name);
 101             return FALSE;
 102         }
 103         else if (v.n1.n2.vt & VT_BYREF)
 104         {
 105             /* FIXME: this won't work for pointers or arrays, as we don't always
 106              * know, if the value to be dereferenced lies in debuggee or
 107              * debugger address space.
 108              */
 109             if (sym->Tag == SymTagPointerType || sym->Tag == SymTagArrayType)
 110             {
 111                 if (buffer) snprintf(buffer, sz, "Couldn't dereference pointer for const value for %s", sym->Name);
 112                 return FALSE;
 113             }
 114             /* this is likely Wine's dbghelp which passes const values by reference
 115              * (object is managed by dbghelp, hence in debugger address space)
 116              */
 117             lvalue->cookie = DLV_HOST;
 118             lvalue->addr.Offset = (DWORD_PTR)sym->Value;
 119         }
 120         else
 121         {
 122             DWORD* pdw = (DWORD*)lexeme_alloc_size(sizeof(*pdw));
 123             lvalue->cookie = DLV_HOST;
 124             lvalue->addr.Offset = (DWORD_PTR)pdw;
 125             *pdw = sym->Value;
 126         }
 127     }
 128     else if (sym->Flags & SYMFLAG_LOCAL)
 129     {
 130         lvalue->cookie = DLV_TARGET;
 131         lvalue->addr.Offset = base + sym->Address;
 132     }
 133     else if (sym->Flags & SYMFLAG_TLSREL)
 134     {
 135         PROCESS_BASIC_INFORMATION pbi;
 136         THREAD_BASIC_INFORMATION  tbi;
 137         DWORD_PTR                 addr;
 138         PEB                       peb;
 139         PEB_LDR_DATA              ldr_data;
 140         PLIST_ENTRY               head, current;
 141         LDR_MODULE                ldr_module;
 142         unsigned                  tlsindex = -1;
 143
 144         if (NtQueryInformationProcess(dbg_curr_process->handle, ProcessBasicInformation,
 145                                       &pbi, sizeof(pbi), NULL) ||
 146             NtQueryInformationThread(dbg_curr_thread->handle, ThreadBasicInformation,
 147                                      &tbi, sizeof(tbi), NULL))
 148         {
 149         tls_error:
 150             if (buffer) snprintf(buffer, sz, "Cannot read TLS address\n");
 151             return FALSE;
 152         }
 153         addr = (DWORD_PTR)&(((TEB*)tbi.TebBaseAddress)->ThreadLocalStoragePointer);
 154         if (!dbg_read_memory((void*)addr, &addr, sizeof(addr)) ||
 155             !dbg_read_memory(pbi.PebBaseAddress, &peb, sizeof(peb)) ||
 156             !dbg_read_memory(peb.LdrData, &ldr_data, sizeof(ldr_data)))
 157             goto tls_error;
 158         current = ldr_data.InLoadOrderModuleList.Flink;
 159         head = &((PEB_LDR_DATA*)peb.LdrData)->InLoadOrderModuleList;
 160         do
 161         {
 162             if (!dbg_read_memory(CONTAINING_RECORD(current, LDR_MODULE, InLoadOrderModuleList),
 163                                  &ldr_module, sizeof(ldr_module))) goto tls_error;
 164             if ((DWORD_PTR)ldr_module.BaseAddress == sym->ModBase)
 165             {
 166                 tlsindex = ldr_module.TlsIndex;
 167                 break;
 168             }
 169             current = ldr_module.InLoadOrderModuleList.Flink;
 170         } while (current != head);
 171
 172         addr += tlsindex * sizeof(DWORD_PTR);
 173         if (!dbg_read_memory((void*)addr, &addr, sizeof(addr))) goto tls_error;
 174         lvalue->cookie = DLV_TARGET;
 175         lvalue->addr.Offset = addr + sym->Address;
 176     }
 177     else
 178     {
 179         lvalue->cookie = DLV_TARGET;
 180         lvalue->addr.Offset = sym->Address;
 181     }
 182     lvalue->addr.Mode = AddrModeFlat;
 183     lvalue->type.module = sym->ModBase;
 184     lvalue->type.id = sym->TypeIndex;
 185
 186     return TRUE;
 187 }
 188
 189 struct sgv_data
 190 {
 191 #define NUMDBGV                 100
 192     struct
 193     {
 194         /* FIXME: NUMDBGV should be made variable */
 195         struct dbg_lvalue               lvalue;
 196         DWORD                           flags;
 197         DWORD                           sym_info;
 198     }                           syms[NUMDBGV];  /* out     : will be filled in with various found symbols */
 199     int                         num;            /* out     : number of found symbols */
 200     int                         num_thunks;     /* out     : number of thunks found */
 201     const char*                 name;           /* in      : name of symbol to look up */
 202     unsigned                    do_thunks : 1;  /* in      : whether we return thunks tags */
 203     ULONG64                     frame_offset;   /* in      : frame for local & parameter variables look up */
 204 };
 205
 206 static BOOL CALLBACK sgv_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
 207 {
 208     struct sgv_data*    sgv = ctx;
 209     unsigned            insp;
 210     char                tmp[64];
 211
 212     if (sym->Flags & SYMFLAG_THUNK)
 213     {
 214         if (!sgv->do_thunks) return TRUE;
 215         sgv->num_thunks++;
 216     }
 217
 218     if (sgv->num >= NUMDBGV)
 219     {
 220         dbg_printf("Too many addresses for symbol '%s', limiting the first %d\n",
 221                    sgv->name, NUMDBGV);
 222         return FALSE;
 223     }
 224     WINE_TRACE("==> %s %s%s%s%s%s%s%s%s\n",
 225                sym->Name,
 226                (sym->Flags & SYMFLAG_FUNCTION) ? "func " : "",
 227                (sym->Flags & SYMFLAG_FRAMEREL) ? "framerel " : "",
 228                (sym->Flags & SYMFLAG_TLSREL) ? "tlsrel " : "",
 229                (sym->Flags & SYMFLAG_REGISTER) ? "register " : "",
 230                (sym->Flags & SYMFLAG_REGREL) ? "regrel " : "",
 231                (sym->Flags & SYMFLAG_PARAMETER) ? "param " : "",
 232                (sym->Flags & SYMFLAG_LOCAL) ? "local " : "",
 233                (sym->Flags & SYMFLAG_THUNK) ? "thunk " : "");
 234
 235     /* always keep the thunks at end of the array */
 236     insp = sgv->num;
 237     if (sgv->num_thunks && !(sym->Flags & SYMFLAG_THUNK))
 238     {
 239         insp -= sgv->num_thunks;
 240         memmove(&sgv->syms[insp + 1], &sgv->syms[insp],
 241                 sizeof(sgv->syms[0]) * sgv->num_thunks);
 242     }
 243     if (!fill_sym_lvalue(sym, sgv->frame_offset, &sgv->syms[insp].lvalue, tmp, sizeof(tmp)))
 244     {
 245         dbg_printf("%s: %s\n", sym->Name, tmp);
 246         return TRUE;
 247     }
 248     sgv->syms[insp].flags              = sym->Flags;
 249     sgv->syms[insp].sym_info           = sym->info;
 250     sgv->num++;
 251
 252     return TRUE;
 253 }
 254
 255 enum sym_get_lval symbol_picker_interactive(const char* name, const struct sgv_data* sgv,
 256                                             struct dbg_lvalue* rtn)
 257 {
 258     char        buffer[512];
 259     unsigned    i;
 260
 261     if (!dbg_interactiveP)
 262     {
 263         dbg_printf("More than one symbol named %s, picking the first one\n", name);
 264         *rtn = sgv->syms[0].lvalue;
 265         return sglv_found;
 266     }
 267
 268     dbg_printf("Many symbols with name '%s', "
 269                "choose the one you want (<cr> to abort):\n", name);
 270     for (i = 0; i < sgv->num; i++)
 271     {
 272         if (sgv->num - sgv->num_thunks > 1 && (sgv->syms[i].flags & SYMFLAG_THUNK) && !DBG_IVAR(AlwaysShowThunks))
 273             continue;
 274         dbg_printf("[%d]: ", i + 1);
 275         if (sgv->syms[i].flags & (SYMFLAG_LOCAL | SYMFLAG_PARAMETER))
 276         {
 277             dbg_printf("%s %sof %s\n",
 278                        sgv->syms[i].flags & SYMFLAG_PARAMETER ? "Parameter" : "Local variable",
 279                        sgv->syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL) ? "(in a register) " : "",
 280                        name);
 281         }
 282         else if (sgv->syms[i].flags & SYMFLAG_THUNK)
 283         {
 284             print_address(&sgv->syms[i].lvalue.addr, TRUE);
 285             /* FIXME: should display where the thunks points to */
 286             dbg_printf(" thunk %s\n", name);
 287         }
 288         else
 289         {
 290             print_address(&sgv->syms[i].lvalue.addr, TRUE);
 291             dbg_printf("\n");
 292         }
 293     }
 294     do
 295     {
 296         if (input_read_line("=> ", buffer, sizeof(buffer)))
 297         {
 298             if (buffer[0] == '\0') return sglv_aborted;
 299             i = atoi(buffer);
 300             if (i < 1 || i > sgv->num)
 301                 dbg_printf("Invalid choice %d\n", i);
 302         }
 303         else return sglv_aborted;
 304     } while (i < 1 || i > sgv->num);
 305
 306     /* The array is 0-based, but the choices are 1..n,
 307      * so we have to subtract one before returning.
 308      */
 309     *rtn = sgv->syms[i - 1].lvalue;
 310     return sglv_found;
 311 }
 312
 313 enum sym_get_lval symbol_picker_scoped(const char* name, const struct sgv_data* sgv,
 314                                        struct dbg_lvalue* rtn)
 315 {
 316     unsigned i;
 317     int local = -1;
 318
 319     for (i = 0; i < sgv->num; i++)
 320     {
 321         if (sgv->num - sgv->num_thunks > 1 && (sgv->syms[i].flags & SYMFLAG_THUNK) && !DBG_IVAR(AlwaysShowThunks))
 322             continue;
 323         if (sgv->syms[i].flags & (SYMFLAG_LOCAL | SYMFLAG_PARAMETER))
 324         {
 325             if (local == -1)
 326                 local = i;
 327             else
 328             {
 329                 /* FIXME: several locals with same name... which one to pick ?? */
 330                 dbg_printf("Several local variables/parameters for %s, aborting\n", name);
 331                 return sglv_aborted;
 332             }
 333         }
 334     }
 335     if (local != -1)
 336     {
 337         *rtn = sgv->syms[local].lvalue;
 338         return sglv_found;
 339     }
 340     /* no locals found, multiple globals... abort for now */
 341     dbg_printf("Several global variables for %s, aborting\n", name);
 342     return sglv_aborted;
 343 }
 344
 345 symbol_picker_t symbol_current_picker = symbol_picker_interactive;
 346
 347 /***********************************************************************
 348  *           symbol_get_lvalue
 349  *
 350  * Get the address of a named symbol.
 351  * Return values:
 352  *      sglv_found:   if the symbol is found
 353  *      sglv_unknown: if the symbol isn't found
 354  *      sglv_aborted: some error occurred (likely, many symbols of same name exist,
 355  *          and user didn't pick one of them)
 356  */
 357 enum sym_get_lval symbol_get_lvalue(const char* name, const int lineno,
 358                                     struct dbg_lvalue* rtn, BOOL bp_disp)
 359 {
 360     struct sgv_data             sgv;
 361     int                         i;
 362     char                        buffer[512];
 363     DWORD                       opt;
 364     IMAGEHLP_STACK_FRAME        ihsf;
 365
 366     if (strlen(name) + 4 > sizeof(buffer))
 367     {
 368         WINE_WARN("Too long symbol (%s)\n", name);
 369         return sglv_unknown;
 370     }
 371
 372     sgv.num        = 0;
 373     sgv.num_thunks = 0;
 374     sgv.name       = &buffer[2];
 375     sgv.do_thunks  = DBG_IVAR(AlwaysShowThunks);
 376
 377     if (strchr(name, '!'))
 378     {
 379         strcpy(buffer, name);
 380     }
 381     else
 382     {
 383         buffer[0] = '*';
 384         buffer[1] = '!';
 385         strcpy(&buffer[2], name);
 386     }
 387
 388     /* this is a wine specific options to return also ELF modules in the
 389      * enumeration
 390      */
 391     SymSetOptions((opt = SymGetOptions()) | 0x40000000);
 392     SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
 393
 394     if (!sgv.num)
 395     {
 396         const char*   ptr = strchr(name, '!');
 397         if ((ptr && ptr[1] != '_') || (!ptr && *name != '_'))
 398         {
 399             if (ptr)
 400             {
 401                 int offset = ptr - name;
 402                 memcpy(buffer, name, offset + 1);
 403                 buffer[offset + 1] = '_';
 404                 strcpy(&buffer[offset + 2], ptr + 1);
 405             }
 406             else
 407             {
 408                 buffer[0] = '*';
 409                 buffer[1] = '!';
 410                 buffer[2] = '_';
 411                 strcpy(&buffer[3], name);
 412             }
 413             SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
 414         }
 415     }
 416     SymSetOptions(opt);
 417
 418     /* now grab local symbols */
 419     if (stack_get_current_frame(&ihsf) && sgv.num < NUMDBGV)
 420     {
 421         sgv.frame_offset = ihsf.FrameOffset;
 422         SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
 423     }
 424
 425     if (!sgv.num)
 426     {
 427         dbg_printf("No symbols found for %s\n", name);
 428         return sglv_unknown;
 429     }
 430
 431     /* recompute potential offsets for functions (linenumber, skip prolog) */
 432     for (i = 0; i < sgv.num; i++)
 433     {
 434         if (sgv.syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL|SYMFLAG_LOCAL|SYMFLAG_THUNK))
 435             continue;
 436
 437         if (lineno == -1)
 438         {
 439             struct dbg_type     type;
 440             ULONG64             addr;
 441
 442             type.module = sgv.syms[i].lvalue.type.module;
 443             type.id     = sgv.syms[i].sym_info;
 444             if (bp_disp && symbol_get_debug_start(&type, &addr))
 445                 sgv.syms[i].lvalue.addr.Offset = addr;
 446         }
 447         else
 448         {
 449             DWORD               disp;
 450             IMAGEHLP_LINE64     il;
 451             BOOL                found = FALSE;
 452
 453             il.SizeOfStruct = sizeof(il);
 454             SymGetLineFromAddr64(dbg_curr_process->handle,
 455                                  (DWORD_PTR)memory_to_linear_addr(&sgv.syms[i].lvalue.addr),
 456                                  &disp, &il);
 457             do
 458             {
 459                 if (lineno == il.LineNumber)
 460                 {
 461                     sgv.syms[i].lvalue.addr.Offset = il.Address;
 462                     found = TRUE;
 463                     break;
 464                 }
 465             } while (SymGetLineNext64(dbg_curr_process->handle, &il));
 466             if (!found)
 467                 WINE_FIXME("No line (%d) found for %s (setting to symbol start)\n",
 468                            lineno, name);
 469         }
 470     }
 471
 472     if (sgv.num - sgv.num_thunks > 1 || /* many symbols non thunks (and showing only non thunks) */
 473         (sgv.num > 1 && DBG_IVAR(AlwaysShowThunks)) || /* many symbols (showing symbols & thunks) */
 474         (sgv.num == sgv.num_thunks && sgv.num_thunks > 1))
 475     {
 476         return symbol_current_picker(name, &sgv, rtn);
 477     }
 478     /* first symbol is the one we want:
 479      * - only one symbol found,
 480      * - or many symbols but only one non thunk when AlwaysShowThunks is FALSE
 481      */
 482     *rtn = sgv.syms[0].lvalue;
 483     return sglv_found;
 484 }
 485
 486 BOOL symbol_is_local(const char* name)
 487 {
 488     struct sgv_data             sgv;
 489     IMAGEHLP_STACK_FRAME        ihsf;
 490
 491     sgv.num        = 0;
 492     sgv.num_thunks = 0;
 493     sgv.name       = name;
 494     sgv.do_thunks  = FALSE;
 495
 496     if (stack_get_current_frame(&ihsf))
 497     {
 498         sgv.frame_offset = ihsf.FrameOffset;
 499         SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
 500     }
 501     return sgv.num > 0;
 502 }
 503
 504 /***********************************************************************
 505  *           symbol_read_symtable
 506  *
 507  * Read a symbol file into the hash table.
 508  */
 509 void symbol_read_symtable(const char* filename, unsigned long offset)
 510 {
 511     dbg_printf("No longer supported\n");
 512
 513 #if 0
 514 /* FIXME: have to implement SymAddSymbol in dbghelp, but likely we'll need to link
 515  * this with an already loaded module !!
 516  */
 517     FILE*       symbolfile;
 518     unsigned    addr;
 519     char        type;
 520     char*       cpnt;
 521     char        buffer[256];
 522     char        name[256];
 523
 524     if (!(symbolfile = fopen(filename, "r")))
 525     {
 526         WINE_WARN("Unable to open symbol table %s\n", filename);
 527         return;
 528     }
 529
 530     dbg_printf("Reading symbols from file %s\n", filename);
 531
 532     while (1)
 533     {
 534         fgets(buffer, sizeof(buffer), symbolfile);
 535         if (feof(symbolfile)) break;
 536
 537         /* Strip any text after a # sign (i.e. comments) */
 538         cpnt = strchr(buffer, '#');
 539         if (cpnt) *cpnt = '\0';
 540
 541         /* Quietly ignore any lines that have just whitespace */
 542         for (cpnt = buffer; *cpnt; cpnt++)
 543         {
 544             if (*cpnt != ' ' && *cpnt != '\t') break;
 545         }
 546         if (!*cpnt || *cpnt == '\n') continue;
 547
 548         if (sscanf(buffer, "%lx %c %s", &addr, &type, name) == 3)
 549         {
 550             if (value.addr.off + offset < value.addr.off)
 551                 WINE_WARN("Address wrap around\n");
 552             value.addr.off += offset;
 553             SymAddSymbol(current_process->handle, BaseOfDll,
 554                          name, addr, 0, 0);
 555         }
 556     }
 557     fclose(symbolfile);
 558 #endif
 559 }
 560
 561 /***********************************************************************
 562  *           symbol_get_function_line_status
 563  *
 564  * Find the symbol nearest to a given address.
 565  */
 566 enum dbg_line_status symbol_get_function_line_status(const ADDRESS64* addr)
 567 {
 568     IMAGEHLP_LINE64     il;
 569     DWORD               disp;
 570     ULONG64             disp64, start;
 571     DWORD_PTR           lin = (DWORD_PTR)memory_to_linear_addr(addr);
 572     char                buffer[sizeof(SYMBOL_INFO) + 256];
 573     SYMBOL_INFO*        sym = (SYMBOL_INFO*)buffer;
 574     struct dbg_type     func;
 575
 576     il.SizeOfStruct = sizeof(il);
 577     sym->SizeOfStruct = sizeof(SYMBOL_INFO);
 578     sym->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
 579
 580     /* do we have some info for lin address ? */
 581     if (!SymFromAddr(dbg_curr_process->handle, lin, &disp64, sym))
 582     {
 583         ADDRESS64   jumpee;
 584         /* some compilers insert thunks in their code without debug info associated
 585          * take care of this situation
 586          */
 587         if (be_cpu->is_jump((void*)lin, &jumpee))
 588             return symbol_get_function_line_status(&jumpee);
 589         return dbg_no_line_info;
 590     }
 591
 592     switch (sym->Tag)
 593     {
 594     case SymTagThunk:
 595         /* FIXME: so far dbghelp doesn't return the 16 <=> 32 thunks
 596          * and furthermore, we no longer take care of them !!!
 597          */
 598         return dbg_in_a_thunk;
 599     case SymTagFunction:
 600     case SymTagPublicSymbol: break;
 601     default:
 602         WINE_FIXME("Unexpected sym-tag 0x%08x\n", sym->Tag);
 603     case SymTagData:
 604         return dbg_no_line_info;
 605     }
 606     /* we should have a function now */
 607     if (!SymGetLineFromAddr64(dbg_curr_process->handle, lin, &disp, &il))
 608         return dbg_no_line_info;
 609
 610     func.module = sym->ModBase;
 611     func.id     = sym->info;
 612
 613     if (symbol_get_debug_start(&func, &start) && lin < start)
 614         return dbg_not_on_a_line_number;
 615
 616     if (!sym->Size) sym->Size = 0x100000;
 617     if (il.FileName && il.FileName[0] && disp < sym->Size)
 618         return (disp == 0) ? dbg_on_a_line_number : dbg_not_on_a_line_number;
 619
 620     return dbg_no_line_info;
 621 }
 622
 623 /***********************************************************************
 624  *           symbol_get_line
 625  *
 626  * Find the symbol nearest to a given address.
 627  * Returns sourcefile name and line number in a format that the listing
 628  * handler can deal with.
 629  */
 630 BOOL symbol_get_line(const char* filename, const char* name,
 631                      IMAGEHLP_LINE64* line)
 632 {
 633     struct sgv_data     sgv;
 634     char                buffer[512];
 635     DWORD               opt, disp;
 636     unsigned            i, found = FALSE;
 637     IMAGEHLP_LINE64     il;
 638
 639     sgv.num        = 0;
 640     sgv.num_thunks = 0;
 641     sgv.name       = &buffer[2];
 642     sgv.do_thunks  = FALSE;
 643
 644     buffer[0] = '*';
 645     buffer[1] = '!';
 646     strcpy(&buffer[2], name);
 647
 648     /* this is a wine specific options to return also ELF modules in the
 649      * enumeration
 650      */
 651     SymSetOptions((opt = SymGetOptions()) | 0x40000000);
 652     if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
 653     {
 654         SymSetOptions(opt);
 655         return FALSE;
 656     }
 657
 658     if (!sgv.num && (name[0] != '_'))
 659     {
 660         buffer[2] = '_';
 661         strcpy(&buffer[3], name);
 662         if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
 663         {
 664             SymSetOptions(opt);
 665             return FALSE;
 666         }
 667     }
 668     SymSetOptions(opt);
 669
 670     for (i = 0; i < sgv.num; i++)
 671     {
 672         DWORD_PTR linear = (DWORD_PTR)memory_to_linear_addr(&sgv.syms[i].lvalue.addr);
 673
 674         il.SizeOfStruct = sizeof(il);
 675         if (!SymGetLineFromAddr64(dbg_curr_process->handle, linear, &disp, &il))
 676             continue;
 677         if (filename && strcmp(il.FileName, filename)) continue;
 678         if (found)
 679         {
 680             WINE_FIXME("Several found, returning first (may not be what you want)...\n");
 681             break;
 682         }
 683         found = TRUE;
 684         *line = il;
 685     }
 686     if (!found)
 687     {
 688         if (filename)   dbg_printf("No such function %s in %s\n", name, filename);
 689         else            dbg_printf("No such function %s\n", name);
 690         return FALSE;
 691     }
 692     return TRUE;
 693 }
 694
 695 /******************************************************************
 696  *              symbol_print_local
 697  *
 698  * Overall format is:
 699  * <name>=<value>                       in non detailed form
 700  * <name>=<value> (local|pmt <where>)   in detailed form
 701  * Note <value> can be an error message in case of error
 702  */
 703 void symbol_print_local(const SYMBOL_INFO* sym, DWORD_PTR base, BOOL detailed)
 704 {
 705     struct dbg_lvalue   lvalue;
 706     char                buffer[64];
 707
 708     dbg_printf("%s=", sym->Name);
 709
 710     if (fill_sym_lvalue(sym, base, &lvalue, buffer, sizeof(buffer)))
 711     {
 712         print_value(&lvalue, 0, 1);
 713         if (detailed)
 714             dbg_printf(" (%s%s)",
 715                        (sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local",
 716                        buffer);
 717     }
 718     else
 719     {
 720         dbg_printf("%s", buffer);
 721         if (detailed)
 722             dbg_printf(" (%s)",
 723                        (sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local");
 724     }
 725 }
 726
 727 static BOOL CALLBACK info_locals_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
 728 {
 729     struct dbg_type     type;
 730
 731     dbg_printf("\t");
 732     type.module = sym->ModBase;
 733     type.id = sym->TypeIndex;
 734     types_print_type(&type, FALSE);
 735
 736     dbg_printf(" ");
 737     symbol_print_local(sym, (DWORD_PTR)ctx, TRUE);
 738     dbg_printf("\n");
 739
 740     return TRUE;
 741 }
 742
 743 int symbol_info_locals(void)
 744 {
 745     IMAGEHLP_STACK_FRAME        ihsf;
 746     ADDRESS64                   addr;
 747
 748     stack_get_current_frame(&ihsf);
 749     addr.Mode = AddrModeFlat;
 750     addr.Offset = ihsf.InstructionOffset;
 751     print_address(&addr, FALSE);
 752     dbg_printf(": (%08lx)\n", (DWORD_PTR)ihsf.FrameOffset);
 753     SymEnumSymbols(dbg_curr_process->handle, 0, NULL, info_locals_cb, (void*)(DWORD_PTR)ihsf.FrameOffset);
 754
 755     return TRUE;
 756
 757 }
 758
 759 static BOOL CALLBACK symbols_info_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
 760 {
 761     struct dbg_type     type;
 762     IMAGEHLP_MODULE     mi;
 763
 764     mi.SizeOfStruct = sizeof(mi);
 765
 766     if (!SymGetModuleInfo(dbg_curr_process->handle, sym->ModBase, &mi))
 767         mi.ModuleName[0] = '\0';
 768     else
 769     {
 770         size_t  len = strlen(mi.ModuleName);
 771         if (len > 5 && !strcmp(mi.ModuleName + len - 5, "<elf>"))
 772             mi.ModuleName[len - 5] = '\0';
 773     }
 774
 775     dbg_printf("%08lx: %s!%s", (ULONG_PTR)sym->Address, mi.ModuleName, sym->Name);
 776     type.id = sym->TypeIndex;
 777     type.module = sym->ModBase;
 778
 779     if (sym->TypeIndex != dbg_itype_none && sym->TypeIndex != 0)
 780     {
 781         dbg_printf(" ");
 782         types_print_type(&type, FALSE);
 783     }
 784     dbg_printf("\n");
 785     return TRUE;
 786 }
 787
 788 void symbol_info(const char* str)
 789 {
 790     char        buffer[512];
 791     DWORD       opt;
 792
 793     if (strlen(str) + 3 >= sizeof(buffer))
 794     {
 795         dbg_printf("Symbol too long (%s)\n", str);
 796         return;
 797     }
 798     buffer[0] = '*';
 799     buffer[1] = '!';
 800     strcpy(&buffer[2], str);
 801     /* this is a wine specific options to return also ELF modules in the
 802      * enumeration
 803      */
 804     SymSetOptions((opt = SymGetOptions()) | 0x40000000);
 805     SymEnumSymbols(dbg_curr_process->handle, 0, buffer, symbols_info_cb, NULL);
 806     SymSetOptions(opt);
 807 }