debugger/hash.c

   1 /*
   2  * File hash.c - generate hash tables for Wine debugger symbols
   3  *
   4  * Copyright (C) 1993, Eric Youngdale.
   5  */
   6
   7
   8 #include "config.h"
   9 #include <stdlib.h>
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <limits.h>
  13 #include <sys/types.h>
  14 #include "debugger.h"
  15
  16 #define NR_NAME_HASH 16384
  17 #ifndef PATH_MAX
  18 #define PATH_MAX _MAX_PATH
  19 #endif
  20
  21 #ifdef __i386__
  22 static char * reg_name[] =
  23 {
  24   "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi"
  25 };
  26
  27 static unsigned reg_ofs[] =
  28 {
  29   FIELD_OFFSET(CONTEXT, Eax), FIELD_OFFSET(CONTEXT, Ecx),
  30   FIELD_OFFSET(CONTEXT, Edx), FIELD_OFFSET(CONTEXT, Ebx),
  31   FIELD_OFFSET(CONTEXT, Esp), FIELD_OFFSET(CONTEXT, Ebp),
  32   FIELD_OFFSET(CONTEXT, Esi), FIELD_OFFSET(CONTEXT, Edi)
  33 };
  34 #else
  35 static char * reg_name[] = { NULL };   /* FIXME */
  36 static unsigned reg_ofs[] = { 0 };
  37 #endif
  38
  39
  40 struct name_hash
  41 {
  42     struct name_hash * next;            /* Used to look up within name hash */
  43     char *             name;
  44     char *             sourcefile;
  45
  46     int                n_locals;
  47     int                locals_alloc;
  48     WineLocals       * local_vars;
  49
  50     int                n_lines;
  51     int                lines_alloc;
  52     WineLineNo       * linetab;
  53
  54     DBG_VALUE          value;
  55     unsigned short     flags;
  56     unsigned short     breakpoint_offset;
  57     unsigned int       symbol_size;
  58 };
  59
  60
  61 static BOOL DEBUG_GetStackSymbolValue( const char * name, DBG_VALUE *value );
  62 static int sortlist_valid = FALSE;
  63
  64 static int sorttab_nsym;
  65 static struct name_hash ** addr_sorttab = NULL;
  66
  67 static struct name_hash * name_hash_table[NR_NAME_HASH];
  68
  69 static unsigned int name_hash( const char * name )
  70 {
  71     unsigned int hash = 0;
  72     unsigned int tmp;
  73     const char * p;
  74
  75     p = name;
  76
  77     while (*p)
  78       {
  79         hash = (hash << 4) + *p++;
  80
  81         if( (tmp = (hash & 0xf0000000)) )
  82           {
  83             hash ^= tmp >> 24;
  84           }
  85         hash &= ~tmp;
  86       }
  87     return hash % NR_NAME_HASH;
  88 }
  89
  90 int
  91 DEBUG_cmp_sym(const void * p1, const void * p2)
  92 {
  93   struct name_hash ** name1 = (struct name_hash **) p1;
  94   struct name_hash ** name2 = (struct name_hash **) p2;
  95
  96   if( ((*name1)->flags & SYM_INVALID) != 0 )
  97     {
  98       return -1;
  99     }
 100
 101   if( ((*name2)->flags & SYM_INVALID) != 0 )
 102     {
 103       return 1;
 104     }
 105
 106   if( (*name1)->value.addr.seg > (*name2)->value.addr.seg )
 107     {
 108       return 1;
 109     }
 110
 111   if( (*name1)->value.addr.seg < (*name2)->value.addr.seg )
 112     {
 113       return -1;
 114     }
 115
 116   if( (*name1)->value.addr.off > (*name2)->value.addr.off )
 117     {
 118       return 1;
 119     }
 120
 121   if( (*name1)->value.addr.off < (*name2)->value.addr.off )
 122     {
 123       return -1;
 124     }
 125
 126   return 0;
 127 }
 128
 129 /***********************************************************************
 130  *           DEBUG_ResortSymbols
 131  *
 132  * Rebuild sorted list of symbols.
 133  */
 134 static
 135 void
 136 DEBUG_ResortSymbols(void)
 137 {
 138     struct name_hash *nh;
 139     int         nsym = 0;
 140     int         i;
 141
 142     for(i=0; i<NR_NAME_HASH; i++)
 143     {
 144         for (nh = name_hash_table[i]; nh; nh = nh->next)
 145           {
 146             if( (nh->flags & SYM_INVALID) == 0 )
 147                nsym++;
 148             else
 149                DEBUG_Printf( DBG_CHN_MESG, "Symbol %s is invalid\n", nh->name );
 150           }
 151     }
 152
 153     sorttab_nsym = nsym;
 154     if( nsym == 0 )
 155       {
 156         return;
 157       }
 158
 159     addr_sorttab = (struct name_hash **) DBG_realloc(addr_sorttab,
 160                                          nsym * sizeof(struct name_hash *));
 161
 162     nsym = 0;
 163     for(i=0; i<NR_NAME_HASH; i++)
 164     {
 165         for (nh = name_hash_table[i]; nh; nh = nh->next)
 166           {
 167             if( (nh->flags & SYM_INVALID) == 0 )
 168                addr_sorttab[nsym++] = nh;
 169           }
 170     }
 171
 172     qsort(addr_sorttab, nsym,
 173           sizeof(struct name_hash *), DEBUG_cmp_sym);
 174     sortlist_valid = TRUE;
 175
 176 }
 177
 178 /***********************************************************************
 179  *           DEBUG_AddSymbol
 180  *
 181  * Add a symbol to the table.
 182  */
 183 struct name_hash *
 184 DEBUG_AddSymbol( const char * name, const DBG_VALUE *value, const char * source,
 185                  int flags)
 186 {
 187     struct name_hash  * new;
 188     struct name_hash *nh;
 189     static char  prev_source[PATH_MAX] = {'\0', };
 190     static char * prev_duped_source = NULL;
 191     char * c;
 192     int hash;
 193
 194     assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 195
 196     hash = name_hash(name);
 197     for (nh = name_hash_table[hash]; nh; nh = nh->next)
 198     {
 199         if( ((nh->flags & SYM_INVALID) != 0) && strcmp(name, nh->name) == 0 )
 200         {
 201 #if 0
 202             DEBUG_Printf(DBG_CHN_MESG, "Changing address for symbol %s (%08lx:%08lx => %08lx:%08lx)\n",
 203                          name, nh->value.addr.seg, nh->value.addr.off, value->addr.seg, value->addr.off);
 204 #endif
 205             nh->value.addr = value->addr;
 206
 207             if( nh->value.type == NULL && value->type != NULL )
 208             {
 209                 nh->value.type = value->type;
 210                 nh->value.cookie = value->cookie;
 211             }
 212             /* it may happen that the same symbol is defined in several compilation
 213              * units, but the linker decides to merge it into a single instance.
 214              * in that case, we don't clear the invalid flag for all the compilation
 215              * units (N_GSYM), and wait to get the symbol from the symtab
 216              */
 217             if ((flags & SYM_INVALID) == 0)
 218                nh->flags &= ~SYM_INVALID;
 219
 220             return nh;
 221         }
 222         if (nh->value.addr.seg == value->addr.seg &&
 223             nh->value.addr.off == value->addr.off &&
 224             strcmp(name, nh->name) == 0 )
 225         {
 226             return nh;
 227         }
 228     }
 229
 230 #if 0
 231     DEBUG_Printf(DBG_CHN_TRACE, "adding symbol (%s) from file '%s' at 0x%04lx:%08lx\n",
 232                  name, source, value->addr.seg, value->addr.off);
 233 #endif
 234
 235     /*
 236      * First see if we already have an entry for this symbol.  If so
 237      * return it, so we don't end up with duplicates.
 238      */
 239
 240     new = (struct name_hash *) DBG_alloc(sizeof(struct name_hash));
 241     new->value = *value;
 242     new->name = DBG_strdup(name);
 243
 244     if( source != NULL )
 245       {
 246         /*
 247          * This is an enhancement to reduce memory consumption.  The idea
 248          * is that we duplicate a given string only once.  This is a big
 249          * win if there are lots of symbols defined in a given source file.
 250          */
 251         if( strcmp(source, prev_source) == 0 )
 252           {
 253             new->sourcefile = prev_duped_source;
 254           }
 255         else
 256           {
 257             strcpy(prev_source, source);
 258             prev_duped_source = new->sourcefile = DBG_strdup(source);
 259           }
 260       }
 261     else
 262       {
 263         new->sourcefile = NULL;
 264       }
 265
 266     new->n_lines        = 0;
 267     new->lines_alloc    = 0;
 268     new->linetab        = NULL;
 269
 270     new->n_locals       = 0;
 271     new->locals_alloc   = 0;
 272     new->local_vars     = NULL;
 273
 274     new->flags          = flags;
 275     new->next           = NULL;
 276
 277     /* Now insert into the hash table */
 278     new->next = name_hash_table[hash];
 279     name_hash_table[hash] = new;
 280
 281     /*
 282      * Check some heuristics based upon the file name to see whether
 283      * we want to step through this guy or not.  These are machine generated
 284      * assembly files that are used to translate between the MS way of
 285      * calling things and the GCC way of calling things.  In general we
 286      * always want to step through.
 287      */
 288     if( source != NULL )
 289       {
 290         c = strrchr(source, '.');
 291         if( c != NULL && strcmp(c, ".s") == 0 )
 292           {
 293             c = strrchr(source, '/');
 294             if( c != NULL )
 295               {
 296                 c++;
 297                 if(    (strcmp(c, "callfrom16.s") == 0)
 298                     || (strcmp(c, "callto16.s") == 0)
 299                     || (strcmp(c, "call32.s") == 0) )
 300                   {
 301                     new->flags |= SYM_TRAMPOLINE;
 302                   }
 303               }
 304           }
 305       }
 306
 307     sortlist_valid = FALSE;
 308     return new;
 309 }
 310
 311 BOOL DEBUG_Normalize(struct name_hash * nh )
 312 {
 313
 314   /*
 315    * We aren't adding any more locals or linenumbers to this function.
 316    * Free any spare memory that we might have allocated.
 317    */
 318   if( nh == NULL )
 319     {
 320       return TRUE;
 321     }
 322
 323   if( nh->n_locals != nh->locals_alloc )
 324     {
 325       nh->locals_alloc = nh->n_locals;
 326       nh->local_vars = DBG_realloc(nh->local_vars,
 327                                   nh->locals_alloc * sizeof(WineLocals));
 328     }
 329
 330   if( nh->n_lines != nh->lines_alloc )
 331     {
 332       nh->lines_alloc = nh->n_lines;
 333       nh->linetab = DBG_realloc(nh->linetab,
 334                               nh->lines_alloc * sizeof(WineLineNo));
 335     }
 336
 337   return TRUE;
 338 }
 339
 340 /***********************************************************************
 341  *           DEBUG_GetSymbolValue
 342  *
 343  * Get the address of a named symbol.
 344  */
 345 BOOL DEBUG_GetSymbolValue( const char * name, const int lineno,
 346                            DBG_VALUE *value, int bp_flag )
 347 {
 348     char buffer[256];
 349     struct name_hash *nh;
 350
 351     for(nh = name_hash_table[name_hash(name)]; nh; nh = nh->next)
 352       {
 353         if( (nh->flags & SYM_INVALID) != 0 )
 354           {
 355             continue;
 356           }
 357
 358         if (!strcmp(nh->name, name)) break;
 359       }
 360
 361     if (!nh && (name[0] != '_'))
 362     {
 363         buffer[0] = '_';
 364         strcpy(buffer+1, name);
 365         for(nh = name_hash_table[name_hash(buffer)]; nh; nh = nh->next)
 366           {
 367             if( (nh->flags & SYM_INVALID) != 0 )
 368               {
 369                 continue;
 370               }
 371             if (!strcmp(nh->name, buffer)) break;
 372           }
 373     }
 374
 375     /*
 376      * If we don't have anything here, then try and see if this
 377      * is a local symbol to the current stack frame.  No matter
 378      * what, we have nothing more to do, so we let that function
 379      * decide what we ultimately return.
 380      */
 381     if (!nh)
 382       {
 383         return DEBUG_GetStackSymbolValue(name, value);
 384       }
 385
 386     value->type = nh->value.type;
 387     value->cookie = nh->value.cookie;
 388     return DEBUG_GetLineNumberAddr( nh, lineno, &value->addr, bp_flag );
 389 }
 390
 391 /***********************************************************************
 392  *           DEBUG_GetLineNumberAddr
 393  *
 394  * Get the address of a named symbol.
 395  */
 396 BOOL DEBUG_GetLineNumberAddr( struct name_hash * nh, const int lineno,
 397                               DBG_ADDR *addr, int bp_flag )
 398 {
 399     int i;
 400
 401     if( lineno == -1 )
 402       {
 403         *addr = nh->value.addr;
 404         if( bp_flag )
 405           {
 406             addr->off += nh->breakpoint_offset;
 407           }
 408       }
 409     else
 410       {
 411         /*
 412          * Search for the specific line number.  If we don't find it,
 413          * then return FALSE.
 414          */
 415         if( nh->linetab == NULL )
 416           {
 417             return FALSE;
 418           }
 419
 420         for(i=0; i < nh->n_lines; i++ )
 421           {
 422             if( nh->linetab[i].line_number == lineno )
 423               {
 424                 *addr = nh->linetab[i].pc_offset;
 425                 return TRUE;
 426               }
 427           }
 428
 429         /*
 430          * This specific line number not found.
 431          */
 432         return FALSE;
 433       }
 434
 435     return TRUE;
 436 }
 437
 438
 439 /***********************************************************************
 440  *           DEBUG_SetSymbolValue
 441  *
 442  * Set the address of a named symbol.
 443  */
 444 BOOL DEBUG_SetSymbolValue( const char * name, const DBG_VALUE *value )
 445 {
 446     char buffer[256];
 447     struct name_hash *nh;
 448
 449     assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 450
 451     for(nh = name_hash_table[name_hash(name)]; nh; nh = nh->next)
 452         if (!strcmp(nh->name, name)) break;
 453
 454     if (!nh && (name[0] != '_'))
 455     {
 456         buffer[0] = '_';
 457         strcpy(buffer+1, name);
 458         for(nh = name_hash_table[name_hash(buffer)]; nh; nh = nh->next)
 459             if (!strcmp(nh->name, buffer)) break;
 460     }
 461
 462     if (!nh) return FALSE;
 463     nh->value = *value;
 464     nh->flags &= ~SYM_INVALID;
 465     DEBUG_FixAddress( &nh->value.addr, DEBUG_context.SegDs );
 466     return TRUE;
 467 }
 468
 469
 470 /***********************************************************************
 471  *           DEBUG_FindNearestSymbol
 472  *
 473  * Find the symbol nearest to a given address.
 474  * If ebp is specified as non-zero, it means we should dump the argument
 475  * list into the string we return as well.
 476  */
 477 const char * DEBUG_FindNearestSymbol( const DBG_ADDR *addr, int flag,
 478                                       struct name_hash ** rtn,
 479                                       unsigned int ebp,
 480                                       struct list_id * source)
 481 {
 482     static char name_buffer[MAX_PATH + 256];
 483     static char arglist[1024];
 484     static char argtmp[256];
 485     struct name_hash * nearest = NULL;
 486     int mid, high, low;
 487     unsigned    int * ptr;
 488     int lineno;
 489     char * lineinfo, *sourcefile;
 490     int i;
 491     char linebuff[16];
 492     unsigned val;
 493
 494     if( rtn != NULL )
 495       {
 496         *rtn = NULL;
 497       }
 498
 499     if( source != NULL )
 500       {
 501         source->sourcefile = NULL;
 502         source->line = -1;
 503       }
 504
 505     if( sortlist_valid == FALSE )
 506       {
 507         DEBUG_ResortSymbols();
 508       }
 509
 510     if( sortlist_valid == FALSE )
 511       {
 512         return NULL;
 513       }
 514
 515     /*
 516      * FIXME  - use the binary search that we added to
 517      * the function DEBUG_CheckLinenoStatus.  Better yet, we should
 518      * probably keep some notion of the current function so we don't
 519      * have to search every time.
 520      */
 521     /*
 522      * Binary search to find closest symbol.
 523      */
 524     low = 0;
 525     high = sorttab_nsym;
 526     if( addr_sorttab[0]->value.addr.seg > addr->seg
 527         || (   addr_sorttab[0]->value.addr.seg == addr->seg
 528             && addr_sorttab[0]->value.addr.off > addr->off) )
 529       {
 530         nearest = NULL;
 531       }
 532     else if( addr_sorttab[high - 1]->value.addr.seg < addr->seg
 533         || (   addr_sorttab[high - 1]->value.addr.seg == addr->seg
 534             && addr_sorttab[high - 1]->value.addr.off < addr->off) )
 535       {
 536         nearest = addr_sorttab[high - 1];
 537       }
 538     else
 539       {
 540         while(1==1)
 541           {
 542             mid = (high + low)/2;
 543             if( mid == low )
 544               {
 545                 /*
 546                  * See if there are any other entries that might also
 547                  * have the same address, and would also have a line
 548                  * number table.
 549                  */
 550                 if( mid > 0 && addr_sorttab[mid]->linetab == NULL )
 551                   {
 552                     if(    (addr_sorttab[mid - 1]->value.addr.seg ==
 553                             addr_sorttab[mid]->value.addr.seg)
 554                         && (addr_sorttab[mid - 1]->value.addr.off ==
 555                             addr_sorttab[mid]->value.addr.off)
 556                         && (addr_sorttab[mid - 1]->linetab != NULL) )
 557                       {
 558                         mid--;
 559                       }
 560                   }
 561
 562                 if(    (mid < sorttab_nsym - 1)
 563                     && (addr_sorttab[mid]->linetab == NULL) )
 564                   {
 565                     if(    (addr_sorttab[mid + 1]->value.addr.seg ==
 566                             addr_sorttab[mid]->value.addr.seg)
 567                         && (addr_sorttab[mid + 1]->value.addr.off ==
 568                             addr_sorttab[mid]->value.addr.off)
 569                         && (addr_sorttab[mid + 1]->linetab != NULL) )
 570                       {
 571                         mid++;
 572                       }
 573                   }
 574                 nearest = addr_sorttab[mid];
 575 #if 0
 576                 DEBUG_Printf(DBG_CHN_MESG, "Found %x:%x when looking for %x:%x %x %s\n",
 577                              addr_sorttab[mid ]->value.addr.seg,
 578                              addr_sorttab[mid ]->value.addr.off,
 579                              addr->seg, addr->off,
 580                              addr_sorttab[mid ]->linetab,
 581                              addr_sorttab[mid ]->name);
 582 #endif
 583                 break;
 584               }
 585             if(    (addr_sorttab[mid]->value.addr.seg < addr->seg)
 586                 || (   addr_sorttab[mid]->value.addr.seg == addr->seg
 587                     && addr_sorttab[mid]->value.addr.off <= addr->off) )
 588               {
 589                 low = mid;
 590               }
 591             else
 592               {
 593                 high = mid;
 594               }
 595           }
 596       }
 597
 598     if (!nearest) return NULL;
 599
 600     if( rtn != NULL )
 601       {
 602         *rtn = nearest;
 603       }
 604
 605     /*
 606      * Fill in the relevant bits to the structure so that we can
 607      * locate the source and line for this bit of code.
 608      */
 609     if( source != NULL )
 610       {
 611         source->sourcefile = nearest->sourcefile;
 612         if( nearest->linetab == NULL )
 613           {
 614             source->line = -1;
 615           }
 616         else
 617           {
 618             source->line = nearest->linetab[0].line_number;
 619           }
 620       }
 621
 622     lineinfo = "";
 623     lineno = -1;
 624
 625     /*
 626      * Prepare to display the argument list.  If ebp is specified, it is
 627      * the framepointer for the function in question.  If not specified,
 628      * we don't want the arglist.
 629      */
 630     memset(arglist, '\0', sizeof(arglist));
 631     if( ebp != 0 )
 632       {
 633         for(i=0; i < nearest->n_locals; i++ )
 634           {
 635             /*
 636              * If this is a register (offset == 0) or a local
 637              * variable, we don't want to know about it.
 638              */
 639             if( nearest->local_vars[i].offset <= 0 )
 640               {
 641                 continue;
 642               }
 643
 644             ptr = (unsigned int *) (ebp + nearest->local_vars[i].offset);
 645             if( arglist[0] == '\0' )
 646               {
 647                 arglist[0] = '(';
 648               }
 649             else
 650               {
 651                 strcat(arglist, ", ");
 652               }
 653             DEBUG_READ_MEM_VERBOSE(ptr, &val, sizeof(val));
 654             sprintf(argtmp, "%s=0x%x", nearest->local_vars[i].name, val);
 655
 656             strcat(arglist, argtmp);
 657           }
 658         if( arglist[0] == '(' )
 659           {
 660             strcat(arglist, ")");
 661           }
 662       }
 663
 664     if( (nearest->sourcefile != NULL) && (flag == TRUE)
 665         && (addr->off - nearest->value.addr.off < 0x100000) )
 666       {
 667
 668         /*
 669          * Try and find the nearest line number to the current offset.
 670          */
 671         if( nearest->linetab != NULL )
 672         {
 673             low = 0;
 674             high = nearest->n_lines;
 675             while ((high - low) > 1)
 676             {
 677                 mid = (high + low) / 2;
 678                 if (addr->off < nearest->linetab[mid].pc_offset.off)
 679                     high = mid;
 680                 else
 681                     low = mid;
 682             }
 683             lineno = nearest->linetab[low].line_number;
 684         }
 685
 686         if( lineno != -1 )
 687           {
 688             sprintf(linebuff, ":%d", lineno);
 689             lineinfo = linebuff;
 690             if( source != NULL )
 691               {
 692                 source->line = lineno;
 693               }
 694           }
 695
 696         /* Remove the path from the file name */
 697         sourcefile = strrchr( nearest->sourcefile, '/' );
 698         if (!sourcefile) sourcefile = nearest->sourcefile;
 699         else sourcefile++;
 700
 701         if (addr->off == nearest->value.addr.off)
 702           sprintf( name_buffer, "%s%s [%s%s]", nearest->name,
 703                    arglist, sourcefile, lineinfo);
 704         else
 705           sprintf( name_buffer, "%s+0x%lx%s [%s%s]", nearest->name,
 706                    addr->off - nearest->value.addr.off,
 707                    arglist, sourcefile, lineinfo );
 708       }
 709     else
 710       {
 711         if (addr->off == nearest->value.addr.off)
 712           sprintf( name_buffer, "%s%s", nearest->name, arglist);
 713         else {
 714           if (addr->seg && (nearest->value.addr.seg!=addr->seg))
 715               return NULL;
 716           else
 717               sprintf( name_buffer, "%s+0x%lx%s", nearest->name,
 718                        addr->off - nearest->value.addr.off, arglist);
 719         }
 720       }
 721     return name_buffer;
 722 }
 723
 724
 725 /***********************************************************************
 726  *           DEBUG_ReadSymbolTable
 727  *
 728  * Read a symbol file into the hash table.
 729  */
 730 void DEBUG_ReadSymbolTable( const char * filename )
 731 {
 732     FILE * symbolfile;
 733     DBG_VALUE value;
 734     char type;
 735     char * cpnt;
 736     char buffer[256];
 737     char name[256];
 738
 739     if (!(symbolfile = fopen(filename, "r")))
 740     {
 741         DEBUG_Printf( DBG_CHN_WARN, "Unable to open symbol table %s\n", filename );
 742         return;
 743     }
 744
 745     DEBUG_Printf( DBG_CHN_MESG, "Reading symbols from file %s\n", filename );
 746
 747     value.type = NULL;
 748     value.addr.seg = 0;
 749     value.addr.off = 0;
 750     value.cookie = DV_TARGET;
 751
 752     while (1)
 753     {
 754         fgets( buffer, sizeof(buffer), symbolfile );
 755         if (feof(symbolfile)) break;
 756
 757         /* Strip any text after a # sign (i.e. comments) */
 758         cpnt = buffer;
 759         while (*cpnt)
 760             if(*cpnt++ == '#') { *cpnt = 0; break; }
 761
 762         /* Quietly ignore any lines that have just whitespace */
 763         cpnt = buffer;
 764         while(*cpnt)
 765         {
 766             if(*cpnt != ' ' && *cpnt != '\t') break;
 767             cpnt++;
 768         }
 769         if (!(*cpnt) || *cpnt == '\n') continue;
 770
 771         if (sscanf(buffer, "%lx %c %s", &value.addr.off, &type, name) == 3)
 772            DEBUG_AddSymbol( name, &value, NULL, SYM_WINE );
 773     }
 774     fclose(symbolfile);
 775 }
 776
 777
 778 void
 779 DEBUG_AddLineNumber( struct name_hash * func, int line_num,
 780                      unsigned long offset )
 781 {
 782   if( func == NULL )
 783     {
 784       return;
 785     }
 786
 787   if( func->n_lines + 1 >= func->lines_alloc )
 788     {
 789       func->lines_alloc += 64;
 790       func->linetab = DBG_realloc(func->linetab,
 791                               func->lines_alloc * sizeof(WineLineNo));
 792     }
 793
 794   func->linetab[func->n_lines].line_number = line_num;
 795   func->linetab[func->n_lines].pc_offset.seg = func->value.addr.seg;
 796   func->linetab[func->n_lines].pc_offset.off = func->value.addr.off + offset;
 797   func->n_lines++;
 798 }
 799
 800
 801 struct wine_locals *
 802 DEBUG_AddLocal( struct name_hash * func, int regno,
 803                 int offset,
 804                 int pc_start,
 805                 int pc_end,
 806                 char * name)
 807 {
 808   if( func == NULL )
 809     {
 810       return NULL;
 811     }
 812
 813   if( func->n_locals + 1 >= func->locals_alloc )
 814     {
 815       func->locals_alloc += 32;
 816       func->local_vars = DBG_realloc(func->local_vars,
 817                               func->locals_alloc * sizeof(WineLocals));
 818     }
 819
 820   func->local_vars[func->n_locals].regno = regno;
 821   func->local_vars[func->n_locals].offset = offset;
 822   func->local_vars[func->n_locals].pc_start = pc_start;
 823   func->local_vars[func->n_locals].pc_end = pc_end;
 824   func->local_vars[func->n_locals].name = DBG_strdup(name);
 825   func->local_vars[func->n_locals].type = NULL;
 826   func->n_locals++;
 827
 828   return &func->local_vars[func->n_locals - 1];
 829 }
 830
 831 void
 832 DEBUG_DumpHashInfo(void)
 833 {
 834   int i;
 835   int depth;
 836   struct name_hash *nh;
 837
 838   /*
 839    * Utility function to dump stats about the hash table.
 840    */
 841     for(i=0; i<NR_NAME_HASH; i++)
 842     {
 843       depth = 0;
 844       for (nh = name_hash_table[i]; nh; nh = nh->next)
 845         {
 846           depth++;
 847         }
 848       DEBUG_Printf(DBG_CHN_MESG, "Bucket %d: %d\n", i, depth);
 849     }
 850 }
 851
 852 /***********************************************************************
 853  *           DEBUG_CheckLinenoStatus
 854  *
 855  * Find the symbol nearest to a given address.
 856  * If ebp is specified as non-zero, it means we should dump the argument
 857  * list into the string we return as well.
 858  */
 859 int DEBUG_CheckLinenoStatus( const DBG_ADDR *addr)
 860 {
 861     struct name_hash * nearest = NULL;
 862     int mid, high, low;
 863
 864     if( sortlist_valid == FALSE )
 865       {
 866         DEBUG_ResortSymbols();
 867       }
 868
 869     /*
 870      * Binary search to find closest symbol.
 871      */
 872     low = 0;
 873     high = sorttab_nsym;
 874     if( addr_sorttab[0]->value.addr.seg > addr->seg
 875         || (   addr_sorttab[0]->value.addr.seg == addr->seg
 876             && addr_sorttab[0]->value.addr.off > addr->off) )
 877       {
 878         nearest = NULL;
 879       }
 880     else if( addr_sorttab[high - 1]->value.addr.seg < addr->seg
 881         || (   addr_sorttab[high - 1]->value.addr.seg == addr->seg
 882             && addr_sorttab[high - 1]->value.addr.off < addr->off) )
 883       {
 884         nearest = addr_sorttab[high - 1];
 885       }
 886     else
 887       {
 888         while(1==1)
 889           {
 890             mid = (high + low)/2;
 891             if( mid == low )
 892               {
 893                 /*
 894                  * See if there are any other entries that might also
 895                  * have the same address, and would also have a line
 896                  * number table.
 897                  */
 898                 if( mid > 0 && addr_sorttab[mid]->linetab == NULL )
 899                   {
 900                     if(    (addr_sorttab[mid - 1]->value.addr.seg ==
 901                             addr_sorttab[mid]->value.addr.seg)
 902                         && (addr_sorttab[mid - 1]->value.addr.off ==
 903                             addr_sorttab[mid]->value.addr.off)
 904                         && (addr_sorttab[mid - 1]->linetab != NULL) )
 905                       {
 906                         mid--;
 907                       }
 908                   }
 909
 910                 if(    (mid < sorttab_nsym - 1)
 911                     && (addr_sorttab[mid]->linetab == NULL) )
 912                   {
 913                     if(    (addr_sorttab[mid + 1]->value.addr.seg ==
 914                             addr_sorttab[mid]->value.addr.seg)
 915                         && (addr_sorttab[mid + 1]->value.addr.off ==
 916                             addr_sorttab[mid]->value.addr.off)
 917                         && (addr_sorttab[mid + 1]->linetab != NULL) )
 918                       {
 919                         mid++;
 920                       }
 921                   }
 922                 nearest = addr_sorttab[mid];
 923 #if 0
 924                 DEBUG_Printf(DBG_CHN_MESG, "Found %x:%x when looking for %x:%x %x %s\n",
 925                              addr_sorttab[mid ]->value.addr.seg,
 926                              addr_sorttab[mid ]->value.addr.off,
 927                              addr->seg, addr->off,
 928                              addr_sorttab[mid ]->linetab,
 929                              addr_sorttab[mid ]->name);
 930 #endif
 931                 break;
 932               }
 933             if(    (addr_sorttab[mid]->value.addr.seg < addr->seg)
 934                 || (   addr_sorttab[mid]->value.addr.seg == addr->seg
 935                     && addr_sorttab[mid]->value.addr.off <= addr->off) )
 936               {
 937                 low = mid;
 938               }
 939             else
 940               {
 941                 high = mid;
 942               }
 943           }
 944       }
 945
 946     if (!nearest) return FUNC_HAS_NO_LINES;
 947
 948     if( nearest->flags & SYM_STEP_THROUGH )
 949       {
 950         /*
 951          * This will cause us to keep single stepping until
 952          * we get to the other side somewhere.
 953          */
 954         return NOT_ON_LINENUMBER;
 955       }
 956
 957     if( (nearest->flags & SYM_TRAMPOLINE) )
 958       {
 959         /*
 960          * This will cause us to keep single stepping until
 961          * we get to the other side somewhere.
 962          */
 963         return FUNC_IS_TRAMPOLINE;
 964       }
 965
 966     if( nearest->linetab == NULL )
 967       {
 968         return FUNC_HAS_NO_LINES;
 969       }
 970
 971
 972     /*
 973      * We never want to stop on the first instruction of a function
 974      * even if it has it's own linenumber.  Let the thing keep running
 975      * until it gets past the function prologue.  We only do this if there
 976      * is more than one line number for the function, of course.
 977      */
 978     if( nearest->value.addr.off == addr->off && nearest->n_lines > 1 )
 979       {
 980         return NOT_ON_LINENUMBER;
 981       }
 982
 983     if( (nearest->sourcefile != NULL)
 984         && (addr->off - nearest->value.addr.off < 0x100000) )
 985       {
 986           low = 0;
 987           high = nearest->n_lines;
 988           while ((high - low) > 1)
 989           {
 990               mid = (high + low) / 2;
 991               if (addr->off < nearest->linetab[mid].pc_offset.off) high = mid;
 992               else low = mid;
 993           }
 994           if (addr->off == nearest->linetab[low].pc_offset.off)
 995               return AT_LINENUMBER;
 996           else
 997               return NOT_ON_LINENUMBER;
 998       }
 999
1000     return FUNC_HAS_NO_LINES;
1001 }
1002
1003 /***********************************************************************
1004  *           DEBUG_GetFuncInfo
1005  *
1006  * Find the symbol nearest to a given address.
1007  * Returns sourcefile name and line number in a format that the listing
1008  * handler can deal with.
1009  */
1010 void
1011 DEBUG_GetFuncInfo( struct list_id * ret, const char * filename,
1012                    const char * name)
1013 {
1014     char buffer[256];
1015     char * pnt;
1016     struct name_hash *nh;
1017
1018     for(nh = name_hash_table[name_hash(name)]; nh; nh = nh->next)
1019       {
1020         if( filename != NULL )
1021           {
1022
1023             if( nh->sourcefile == NULL )
1024               {
1025                 continue;
1026               }
1027
1028             pnt = strrchr(nh->sourcefile, '/');
1029             if( strcmp(nh->sourcefile, filename) != 0
1030                 && (pnt == NULL || strcmp(pnt + 1, filename) != 0) )
1031               {
1032                 continue;
1033               }
1034           }
1035         if (!strcmp(nh->name, name)) break;
1036       }
1037
1038     if (!nh && (name[0] != '_'))
1039     {
1040         buffer[0] = '_';
1041         strcpy(buffer+1, name);
1042         for(nh = name_hash_table[name_hash(buffer)]; nh; nh = nh->next)
1043           {
1044             if( filename != NULL )
1045               {
1046                 if( nh->sourcefile == NULL )
1047                   {
1048                     continue;
1049                   }
1050
1051                 pnt = strrchr(nh->sourcefile, '/');
1052                 if( strcmp(nh->sourcefile, filename) != 0
1053                     && (pnt == NULL || strcmp(pnt + 1, filename) != 0) )
1054                   {
1055                     continue;
1056                   }
1057               }
1058             if (!strcmp(nh->name, buffer)) break;
1059           }
1060     }
1061
1062     if( !nh )
1063       {
1064         if( filename != NULL )
1065           {
1066             DEBUG_Printf(DBG_CHN_MESG, "No such function %s in %s\n", name, filename);
1067           }
1068         else
1069           {
1070             DEBUG_Printf(DBG_CHN_MESG, "No such function %s\n", name);
1071           }
1072         ret->sourcefile = NULL;
1073         ret->line = -1;
1074         return;
1075       }
1076
1077     ret->sourcefile = nh->sourcefile;
1078
1079     /*
1080      * Search for the specific line number.  If we don't find it,
1081      * then return FALSE.
1082      */
1083     if( nh->linetab == NULL )
1084       {
1085         ret->line = -1;
1086       }
1087     else
1088       {
1089         ret->line = nh->linetab[0].line_number;
1090       }
1091 }
1092
1093 /***********************************************************************
1094  *           DEBUG_GetStackSymbolValue
1095  *
1096  * Get the address of a named symbol from the current stack frame.
1097  */
1098 static
1099 BOOL DEBUG_GetStackSymbolValue( const char * name, DBG_VALUE *value )
1100 {
1101   struct name_hash * curr_func;
1102   unsigned int       ebp;
1103   unsigned int       eip;
1104   int                i;
1105
1106   if( DEBUG_GetCurrentFrame(&curr_func, &eip, &ebp) == FALSE )
1107     {
1108       return FALSE;
1109     }
1110
1111   for(i=0; i < curr_func->n_locals; i++ )
1112     {
1113       /*
1114        * Test the range of validity of the local variable.  This
1115        * comes up with RBRAC/LBRAC stabs in particular.
1116        */
1117       if(    (curr_func->local_vars[i].pc_start != 0)
1118           && ((eip - curr_func->value.addr.off)
1119               < curr_func->local_vars[i].pc_start) )
1120         {
1121           continue;
1122         }
1123
1124       if(    (curr_func->local_vars[i].pc_end != 0)
1125           && ((eip - curr_func->value.addr.off)
1126               > curr_func->local_vars[i].pc_end) )
1127         {
1128           continue;
1129         }
1130
1131       if( strcmp(name, curr_func->local_vars[i].name) == 0 )
1132         {
1133           /*
1134            * OK, we found it.  Now figure out what to do with this.
1135            */
1136           if( curr_func->local_vars[i].regno != 0 )
1137             {
1138               /*
1139                * Register variable.  Point to DEBUG_context field.
1140                */
1141               value->addr.off = ((DWORD)&DEBUG_context) +
1142                  reg_ofs[curr_func->local_vars[i].regno - 1];
1143               value->cookie = DV_HOST;
1144             }
1145           else
1146             {
1147               value->addr.off = ebp + curr_func->local_vars[i].offset;
1148               value->cookie = DV_TARGET;
1149             }
1150           value->addr.seg = 0;
1151           value->type = curr_func->local_vars[i].type;
1152
1153           return TRUE;
1154         }
1155     }
1156
1157   return FALSE;
1158 }
1159
1160 int
1161 DEBUG_InfoLocals(void)
1162 {
1163   struct name_hash  * curr_func;
1164   unsigned int        ebp;
1165   unsigned int        eip;
1166   int                 i;
1167   unsigned int      * ptr;
1168   unsigned int        val;
1169
1170   if( DEBUG_GetCurrentFrame(&curr_func, &eip, &ebp) == FALSE )
1171     {
1172       return FALSE;
1173     }
1174
1175   for(i=0; i < curr_func->n_locals; i++ )
1176     {
1177       /*
1178        * Test the range of validity of the local variable.  This
1179        * comes up with RBRAC/LBRAC stabs in particular.
1180        */
1181       if(    (curr_func->local_vars[i].pc_start != 0)
1182           && ((eip - curr_func->value.addr.off)
1183               < curr_func->local_vars[i].pc_start) )
1184         {
1185           continue;
1186         }
1187
1188       if(    (curr_func->local_vars[i].pc_end != 0)
1189           && ((eip - curr_func->value.addr.off)
1190               > curr_func->local_vars[i].pc_end) )
1191         {
1192           continue;
1193         }
1194
1195       if( curr_func->local_vars[i].regno != 0 )
1196         {
1197           ptr = (unsigned int *)(((DWORD)&DEBUG_context)
1198                                  + reg_ofs[curr_func->local_vars[i].regno - 1]);
1199           DEBUG_Printf(DBG_CHN_MESG, "%s:%s (optimized into register $%s) == 0x%8.8x\n",
1200                        curr_func->name, curr_func->local_vars[i].name,
1201                        reg_name[curr_func->local_vars[i].regno - 1],
1202                        *ptr);
1203         }
1204       else
1205         {
1206           DEBUG_READ_MEM_VERBOSE((void*)(ebp + curr_func->local_vars[i].offset),
1207                                  &val, sizeof(val));
1208           DEBUG_Printf(DBG_CHN_MESG, "%s:%s == 0x%8.8x\n",
1209                        curr_func->name, curr_func->local_vars[i].name, val);
1210         }
1211     }
1212
1213   return TRUE;
1214 }
1215
1216 int
1217 DEBUG_SetSymbolSize(struct name_hash * sym, unsigned int len)
1218 {
1219   sym->symbol_size = len;
1220
1221   return TRUE;
1222 }
1223
1224 int
1225 DEBUG_SetSymbolBPOff(struct name_hash * sym, unsigned int off)
1226 {
1227   sym->breakpoint_offset = off;
1228
1229   return TRUE;
1230 }
1231
1232 int
1233 DEBUG_GetSymbolAddr(struct name_hash * sym, DBG_ADDR * addr)
1234 {
1235
1236   *addr = sym->value.addr;
1237
1238   return TRUE;
1239 }
1240
1241 int DEBUG_SetLocalSymbolType(struct wine_locals * sym, struct datatype * type)
1242 {
1243   sym->type = type;
1244
1245   return TRUE;
1246 }