debugger/types.c

   1 /*
   2  * File types.c - datatype handling stuff for internal debugger.
   3  *
   4  * Copyright (C) 1997, Eric Youngdale.
   5  *
   6  * This really doesn't do much at the moment, but it forms the framework
   7  * upon which full support for datatype handling will eventually be hung.
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12
  13 #include <assert.h>
  14 #include <fcntl.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17 #include <limits.h>
  18 #include <string.h>
  19 #include <unistd.h>
  20
  21 #include "win.h"
  22 #include "pe_image.h"
  23 #include "peexe.h"
  24 #include "debugger.h"
  25 #include "peexe.h"
  26 #include "xmalloc.h"
  27
  28 #define NR_TYPE_HASH 521
  29
  30 int               DEBUG_nchar;
  31 static int        DEBUG_maxchar = 1024;
  32
  33 struct en_values
  34 {
  35   struct en_values* next;
  36   char            * name;
  37   int               value;
  38 };
  39
  40 struct member
  41 {
  42   struct member   * next;
  43   char            * name;
  44   struct datatype * type;
  45   int               offset;
  46   int               size;
  47 };
  48
  49 struct datatype
  50 {
  51   enum  debug_type type;
  52   struct datatype * next;
  53   char * name;
  54   union
  55   {
  56     struct
  57     {
  58       char    basic_type;
  59       char  * output_format;
  60       char    basic_size;
  61       unsigned b_signed:1;
  62     } basic;
  63     struct
  64     {
  65       unsigned short bitoff;
  66       unsigned short nbits;
  67       struct datatype * basetype;
  68     } bitfield;
  69
  70     struct
  71     {
  72       struct datatype * pointsto;
  73     } pointer;
  74     struct
  75     {
  76       struct datatype * rettype;
  77     } funct;
  78     struct
  79     {
  80       int               start;
  81       int               end;
  82       struct datatype * basictype;
  83     } array;
  84     struct
  85     {
  86       int               size;
  87       struct member * members;
  88     } structure;
  89     struct
  90     {
  91       struct en_values * members;
  92     } enumeration;
  93   } un;
  94 };
  95
  96 #define BASIC_INT               1
  97 #define BASIC_CHAR              2
  98 #define BASIC_LONG              3
  99 #define BASIC_UINT              4
 100 #define BASIC_LUI               5
 101 #define BASIC_LONGLONG          6
 102 #define BASIC_ULONGLONGI        7
 103 #define BASIC_SHORT             8
 104 #define BASIC_SHORTUI           9
 105 #define BASIC_SCHAR             10
 106 #define BASIC_UCHAR             11
 107 #define BASIC_FLT               12
 108 #define BASIC_LONG_DOUBLE       13
 109 #define BASIC_DOUBLE            14
 110 #define BASIC_CMPLX_INT         15
 111 #define BASIC_CMPLX_FLT         16
 112 #define BASIC_CMPLX_DBL         17
 113 #define BASIC_CMPLX_LONG_DBL    18
 114 #define BASIC_VOID              19
 115
 116 struct datatype * DEBUG_TypeInt = NULL;
 117 struct datatype * DEBUG_TypeIntConst = NULL;
 118 struct datatype * DEBUG_TypeUSInt = NULL;
 119 struct datatype * DEBUG_TypeString = NULL;
 120
 121 /*
 122  * All of the types that have been defined so far.
 123  */
 124 static struct datatype * type_hash_table[NR_TYPE_HASH + 1];
 125 static struct datatype * pointer_types = NULL;
 126
 127 static unsigned int type_hash( const char * name )
 128 {
 129     unsigned int hash = 0;
 130     unsigned int tmp;
 131     const char * p;
 132
 133     p = name;
 134
 135     while (*p)
 136       {
 137         hash = (hash << 4) + *p++;
 138
 139         if( (tmp = (hash & 0xf0000000)) )
 140           {
 141             hash ^= tmp >> 24;
 142           }
 143         hash &= ~tmp;
 144       }
 145     return hash % NR_TYPE_HASH;
 146 }
 147
 148
 149 static struct datatype *
 150 DEBUG_InitBasic(int type, char * name, int size, int b_signed,
 151                             char * output_format)
 152 {
 153   int hash;
 154
 155   struct datatype * dt;
 156   dt = (struct datatype *) xmalloc(sizeof(struct datatype));
 157
 158   if( dt != NULL )
 159     {
 160       if( name != NULL )
 161         {
 162           hash = type_hash(name);
 163         }
 164       else
 165         {
 166           hash = NR_TYPE_HASH;
 167         }
 168
 169       dt->type = BASIC;
 170       dt->name = name;
 171       dt->next = type_hash_table[hash];
 172       type_hash_table[hash] = dt;
 173       dt->un.basic.basic_type = type;
 174       dt->un.basic.basic_size = size;
 175       dt->un.basic.b_signed = b_signed;
 176       dt->un.basic.output_format = output_format;
 177     }
 178
 179   return dt;
 180 }
 181
 182 static
 183 struct datatype *
 184 DEBUG_LookupDataType(enum debug_type xtype, int hash, const char * typename)
 185 {
 186   struct datatype * dt = NULL;
 187
 188   if( typename != NULL )
 189     {
 190       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 191         {
 192           if( xtype != dt->type || dt->name == NULL
 193               || dt->name[0] != typename[0])
 194             {
 195               continue;
 196             }
 197
 198           if( strcmp(dt->name, typename) == 0 )
 199             {
 200               return dt;
 201             }
 202         }
 203     }
 204
 205   return dt;
 206 }
 207
 208 struct datatype *
 209 DEBUG_NewDataType(enum debug_type xtype, const char * typename)
 210 {
 211   struct datatype * dt = NULL;
 212   int hash;
 213
 214   /*
 215    * The last bucket is special, and is used to hold typeless names.
 216    */
 217   if( typename == NULL )
 218     {
 219       hash = NR_TYPE_HASH;
 220     }
 221   else
 222     {
 223       hash = type_hash(typename);
 224     }
 225
 226   dt = DEBUG_LookupDataType(xtype, hash, typename);
 227
 228   if( dt == NULL )
 229     {
 230       dt = (struct datatype *) xmalloc(sizeof(struct datatype));
 231
 232       if( dt != NULL )
 233         {
 234           memset(dt, 0, sizeof(*dt));
 235
 236           dt->type = xtype;
 237           if( typename != NULL )
 238             {
 239               dt->name = xstrdup(typename);
 240             }
 241           else
 242             {
 243               dt->name = NULL;
 244             }
 245           if( xtype == POINTER )
 246             {
 247               dt->next = pointer_types;
 248               pointer_types = dt;
 249             }
 250           else
 251             {
 252               dt->next = type_hash_table[hash];
 253               type_hash_table[hash] = dt;
 254             }
 255         }
 256     }
 257
 258   return dt;
 259 }
 260
 261 struct datatype *
 262 DEBUG_FindOrMakePointerType(struct datatype * reftype)
 263 {
 264   struct datatype * dt = NULL;
 265
 266   if( reftype != NULL )
 267     {
 268       for( dt = pointer_types; dt; dt = dt->next )
 269         {
 270           if( dt->type != POINTER )
 271             {
 272               continue;
 273             }
 274
 275           if( dt->un.pointer.pointsto == reftype )
 276             {
 277               return dt;
 278             }
 279         }
 280     }
 281
 282   if( dt == NULL )
 283     {
 284       dt = (struct datatype *) xmalloc(sizeof(struct datatype));
 285
 286       if( dt != NULL )
 287         {
 288           dt->type = POINTER;
 289           dt->un.pointer.pointsto = reftype;
 290           dt->next = pointer_types;
 291           pointer_types = dt;
 292         }
 293     }
 294
 295   return dt;
 296 }
 297
 298 void
 299 DEBUG_InitTypes()
 300 {
 301   static int beenhere = 0;
 302   struct datatype * chartype;
 303
 304   if( beenhere++ != 0 )
 305     {
 306       return;
 307     }
 308
 309   /*
 310    * Special version of int used with constants of various kinds.
 311    */
 312   DEBUG_TypeIntConst = DEBUG_InitBasic(BASIC_INT,NULL,4,1,"%d");
 313
 314   /*
 315    * Initialize a few builtin types.
 316    */
 317
 318
 319   DEBUG_TypeInt = DEBUG_InitBasic(BASIC_INT,"int",4,1,"%d");
 320   chartype = DEBUG_InitBasic(BASIC_CHAR,"char",1,1,"'%c'");
 321   DEBUG_InitBasic(BASIC_LONG,"long int",4,1,"%d");
 322   DEBUG_TypeUSInt = DEBUG_InitBasic(BASIC_UINT,"unsigned int",4,0,"%d");
 323   DEBUG_InitBasic(BASIC_LUI,"long unsigned int",4,0,"%d");
 324   DEBUG_InitBasic(BASIC_LONGLONG,"long long int",8,1,"%ld");
 325   DEBUG_InitBasic(BASIC_ULONGLONGI,"long long unsigned int",8,0,"%ld");
 326   DEBUG_InitBasic(BASIC_SHORT,"short int",2,1,"%d");
 327   DEBUG_InitBasic(BASIC_SHORTUI,"short unsigned int",2,0,"%d");
 328   DEBUG_InitBasic(BASIC_SCHAR,"signed char",1,1,"'%c'");
 329   DEBUG_InitBasic(BASIC_UCHAR,"unsigned char",1,0,"'%c'");
 330   DEBUG_InitBasic(BASIC_FLT,"float",4,0,"%f");
 331   DEBUG_InitBasic(BASIC_LONG_DOUBLE,"double",8,0,"%lf");
 332   DEBUG_InitBasic(BASIC_DOUBLE,"long double",12,0,NULL);
 333   DEBUG_InitBasic(BASIC_CMPLX_INT,"complex int",8,1,NULL);
 334   DEBUG_InitBasic(BASIC_CMPLX_FLT,"complex float",8,0,NULL);
 335   DEBUG_InitBasic(BASIC_CMPLX_DBL,"complex double",16,0,NULL);
 336   DEBUG_InitBasic(BASIC_CMPLX_LONG_DBL,"complex long double",24,0,NULL);
 337   DEBUG_InitBasic(BASIC_VOID,"void",0,0,NULL);
 338
 339   DEBUG_TypeString = DEBUG_NewDataType(POINTER, NULL);
 340   DEBUG_SetPointerType(DEBUG_TypeString, chartype);
 341
 342   /*
 343    * Now initialize the builtins for codeview.
 344    */
 345   DEBUG_InitCVDataTypes();
 346
 347 }
 348
 349 long long int
 350 DEBUG_GetExprValue(DBG_ADDR * addr, char ** format)
 351 {
 352   unsigned int rtn;
 353   struct datatype * type2 = NULL;
 354   struct en_values * e;
 355   char * def_format = "0x%x";
 356
 357   rtn = 0;
 358   assert(addr->type != NULL);
 359
 360   switch(addr->type->type)
 361     {
 362     case BASIC:
 363       if (!DBG_CHECK_READ_PTR( addr,  addr->type->un.basic.basic_size))
 364         {
 365           return 0;
 366         }
 367
 368       memcpy(&rtn, (char *) addr->off, addr->type->un.basic.basic_size);
 369       if(    (addr->type->un.basic.b_signed)
 370           && ((addr->type->un.basic.basic_size & 3) != 0)
 371           && ((rtn >> (addr->type->un.basic.basic_size * 8 - 1)) != 0) )
 372         {
 373           rtn = rtn | ((-1) << (addr->type->un.basic.basic_size * 8));
 374         }
 375       if( addr->type->un.basic.output_format != NULL )
 376         {
 377           def_format = addr->type->un.basic.output_format;
 378         }
 379
 380       /*
 381        * Check for single character prints that are out of range.
 382        */
 383       if( addr->type->un.basic.basic_size == 1
 384           && strcmp(def_format, "'%c'") == 0
 385           && ((rtn < 0x20) || (rtn > 0x80)) )
 386         {
 387           def_format = "%d";
 388         }
 389       break;
 390     case POINTER:
 391       if (!DBG_CHECK_READ_PTR( addr, 1 )) return 0;
 392       rtn = (unsigned int)  *((unsigned char **)addr->off);
 393       type2 = addr->type->un.pointer.pointsto;
 394       if( type2->type == BASIC && type2->un.basic.basic_size == 1 )
 395         {
 396           def_format = "\"%s\"";
 397           break;
 398         }
 399       else
 400         {
 401           def_format = "0x%8.8x";
 402         }
 403       break;
 404     case ARRAY:
 405     case STRUCT:
 406       if (!DBG_CHECK_READ_PTR( addr, 1 )) return 0;
 407       rtn = (unsigned int)  *((unsigned char **)addr->off);
 408       def_format = "0x%8.8x";
 409       break;
 410     case ENUM:
 411       rtn = (unsigned int)  *((unsigned char **)addr->off);
 412       for(e = addr->type->un.enumeration.members; e; e = e->next )
 413         {
 414           if( e->value == rtn )
 415             {
 416               break;
 417             }
 418         }
 419       if( e != NULL )
 420         {
 421           rtn = (int) e->name;
 422           def_format = "%s";
 423         }
 424       else
 425         {
 426           def_format = "%d";
 427         }
 428       break;
 429     default:
 430       rtn = 0;
 431       break;
 432     }
 433
 434
 435   if( format != NULL )
 436     {
 437       *format = def_format;
 438     }
 439   return rtn;
 440 }
 441
 442 unsigned int
 443 DEBUG_TypeDerefPointer(DBG_ADDR * addr, struct datatype ** newtype)
 444 {
 445   /*
 446    * Make sure that this really makes sense.
 447    */
 448   if( addr->type->type != POINTER )
 449     {
 450       *newtype = NULL;
 451       return 0;
 452     }
 453
 454   *newtype = addr->type->un.pointer.pointsto;
 455   return *(unsigned int*) (addr->off);
 456 }
 457
 458 unsigned int
 459 DEBUG_FindStructElement(DBG_ADDR * addr, const char * ele_name, int * tmpbuf)
 460 {
 461   struct member * m;
 462   unsigned int    mask;
 463
 464   /*
 465    * Make sure that this really makes sense.
 466    */
 467   if( addr->type->type != STRUCT )
 468     {
 469       addr->type = NULL;
 470       return FALSE;
 471     }
 472
 473   for(m = addr->type->un.structure.members; m; m = m->next)
 474     {
 475       if( strcmp(m->name, ele_name) == 0 )
 476         {
 477           addr->type = m->type;
 478           if( (m->offset & 7) != 0 || (m->size & 7) != 0)
 479             {
 480               /*
 481                * Bitfield operation.  We have to extract the field and store
 482                * it in a temporary buffer so that we get it all right.
 483                */
 484               *tmpbuf = ((*(int* ) (addr->off + (m->offset >> 3))) >> (m->offset & 7));
 485               addr->off = (int) tmpbuf;
 486
 487               mask = 0xffffffff << (m->size);
 488               *tmpbuf &= ~mask;
 489               /*
 490                * OK, now we have the correct part of the number.
 491                * Check to see whether the basic type is signed or not, and if so,
 492                * we need to sign extend the number.
 493                */
 494               if( m->type->type == BASIC && m->type->un.basic.b_signed != 0
 495                   && (*tmpbuf & (1 << (m->size - 1))) != 0 )
 496                 {
 497                   *tmpbuf |= mask;
 498                 }
 499             }
 500           else
 501             {
 502               addr->off += (m->offset >> 3);
 503             }
 504           return TRUE;
 505         }
 506     }
 507
 508   addr->type = NULL;
 509   return FALSE;
 510 }
 511
 512 int
 513 DEBUG_SetStructSize(struct datatype * dt, int size)
 514 {
 515   assert(dt->type == STRUCT);
 516
 517   if( dt->un.structure.members != NULL )
 518     {
 519       return FALSE;
 520     }
 521
 522   dt->un.structure.size = size;
 523   dt->un.structure.members = NULL;
 524
 525   return TRUE;
 526 }
 527
 528 int
 529 DEBUG_CopyFieldlist(struct datatype * dt, struct datatype * dt2)
 530 {
 531
 532   assert( dt->type == dt2->type && ((dt->type == STRUCT) || (dt->type == ENUM)));
 533
 534   if( dt->type == STRUCT )
 535     {
 536       dt->un.structure.members = dt2->un.structure.members;
 537     }
 538   else
 539     {
 540       dt->un.enumeration.members = dt2->un.enumeration.members;
 541     }
 542
 543   return TRUE;
 544 }
 545
 546 int
 547 DEBUG_AddStructElement(struct datatype * dt, char * name, struct datatype * type,
 548                        int offset, int size)
 549 {
 550   struct member * m;
 551   struct member * last;
 552   struct en_values * e;
 553
 554   if( dt->type == STRUCT )
 555     {
 556       for(last = dt->un.structure.members; last; last = last->next)
 557         {
 558           if(    (last->name[0] == name[0])
 559               && (strcmp(last->name, name) == 0) )
 560             {
 561               return TRUE;
 562             }
 563           if( last->next == NULL )
 564             {
 565               break;
 566             }
 567         }
 568       m = (struct member *) xmalloc(sizeof(struct member));
 569       if( m == FALSE )
 570         {
 571           return FALSE;
 572         }
 573
 574       m->name = xstrdup(name);
 575       m->type = type;
 576       m->offset = offset;
 577       m->size = size;
 578       if( last == NULL )
 579         {
 580           m->next = dt->un.structure.members;
 581           dt->un.structure.members = m;
 582         }
 583       else
 584         {
 585           last->next = m;
 586           m->next = NULL;
 587         }
 588       /*
 589        * If the base type is bitfield, then adjust the offsets here so that we
 590        * are able to look things up without lots of falter-all.
 591        */
 592       if( type->type == BITFIELD )
 593         {
 594           m->offset += m->type->un.bitfield.bitoff;
 595           m->size = m->type->un.bitfield.nbits;
 596           m->type = m->type->un.bitfield.basetype;
 597         }
 598     }
 599   else if( dt->type == ENUM )
 600     {
 601       e = (struct en_values *) xmalloc(sizeof(struct en_values));
 602       if( e == FALSE )
 603         {
 604           return FALSE;
 605         }
 606
 607       e->name = xstrdup(name);
 608       e->value = offset;
 609       e->next = dt->un.enumeration.members;
 610       dt->un.enumeration.members = e;
 611     }
 612   else
 613     {
 614       assert(FALSE);
 615     }
 616   return TRUE;
 617 }
 618
 619 struct datatype *
 620 DEBUG_GetPointerType(struct datatype * dt)
 621 {
 622   if( dt->type == POINTER )
 623     {
 624       return dt->un.pointer.pointsto;
 625     }
 626
 627   return NULL;
 628 }
 629
 630 int
 631 DEBUG_SetPointerType(struct datatype * dt, struct datatype * dt2)
 632 {
 633   switch(dt->type)
 634     {
 635     case POINTER:
 636       dt->un.pointer.pointsto = dt2;
 637       break;
 638     case FUNC:
 639       dt->un.funct.rettype = dt2;
 640       break;
 641     default:
 642       assert(FALSE);
 643     }
 644
 645   return TRUE;
 646 }
 647
 648 int
 649 DEBUG_SetArrayParams(struct datatype * dt, int min, int max, struct datatype * dt2)
 650 {
 651   assert(dt->type == ARRAY);
 652   dt->un.array.start = min;
 653   dt->un.array.end   = max;
 654   dt->un.array.basictype = dt2;
 655
 656   return TRUE;
 657 }
 658
 659 int
 660 DEBUG_SetBitfieldParams(struct datatype * dt, int offset, int nbits,
 661                         struct datatype * dt2)
 662 {
 663   assert(dt->type == BITFIELD);
 664   dt->un.bitfield.bitoff   = offset;
 665   dt->un.bitfield.nbits    = nbits;
 666   dt->un.bitfield.basetype = dt2;
 667
 668   return TRUE;
 669 }
 670
 671 int DEBUG_GetObjectSize(struct datatype * dt)
 672 {
 673   if( dt == NULL )
 674     {
 675       return 0;
 676     }
 677
 678   switch(dt->type)
 679     {
 680     case BASIC:
 681       return dt->un.basic.basic_size;
 682     case POINTER:
 683       return sizeof(int *);
 684     case STRUCT:
 685       return dt->un.structure.size;
 686     case ENUM:
 687       return sizeof(int);
 688     case ARRAY:
 689       return (dt->un.array.end - dt->un.array.start)
 690         * DEBUG_GetObjectSize(dt->un.array.basictype);
 691     case BITFIELD:
 692       /*
 693        * Bitfields have to be handled seperately later on
 694        * when we insert the element into the structure.
 695        */
 696       return 0;
 697     case TYPEDEF:
 698     case FUNC:
 699     case CONST:
 700       assert(FALSE);
 701     }
 702   return 0;
 703 }
 704
 705 unsigned int
 706 DEBUG_ArrayIndex(DBG_ADDR * addr, DBG_ADDR * result, int index)
 707 {
 708   int size;
 709
 710   /*
 711    * Make sure that this really makes sense.
 712    */
 713   if( addr->type->type == POINTER )
 714     {
 715       /*
 716        * Get the base type, so we know how much to index by.
 717        */
 718       size = DEBUG_GetObjectSize(addr->type->un.pointer.pointsto);
 719       result->type = addr->type->un.pointer.pointsto;
 720       result->off = (*(unsigned int*) (addr->off)) + size * index;
 721     }
 722   else if (addr->type->type == ARRAY)
 723     {
 724       size = DEBUG_GetObjectSize(addr->type->un.array.basictype);
 725       result->type = addr->type->un.array.basictype;
 726       result->off = addr->off + size * (index - addr->type->un.array.start);
 727     }
 728
 729   return TRUE;
 730 }
 731
 732 /***********************************************************************
 733  *           DEBUG_Print
 734  *
 735  * Implementation of the 'print' command.
 736  */
 737 void
 738 DEBUG_Print( const DBG_ADDR *addr, int count, char format, int level )
 739 {
 740   DBG_ADDR        addr1;
 741   int             i;
 742   struct member * m;
 743   char          * pnt;
 744   int             size;
 745   long long int   value;
 746
 747   if (count != 1)
 748     {
 749       fprintf( stderr, "Count other than 1 is meaningless in 'print' command\n" );
 750       return;
 751     }
 752
 753   if( addr->type == NULL )
 754     {
 755       fprintf(stderr, "Unable to evaluate expression\n");
 756       goto leave;
 757     }
 758
 759   if( level == 0 )
 760     {
 761       DEBUG_nchar = 0;
 762     }
 763
 764   if( DEBUG_nchar > DEBUG_maxchar )
 765     {
 766       fprintf(stderr, "...");
 767       goto leave;
 768     }
 769
 770   if( format == 'i' || format == 's' || format == 'w' || format == 'b' )
 771     {
 772       fprintf( stderr, "Format specifier '%c' is meaningless in 'print' command\n", format );
 773       format = '\0';
 774     }
 775
 776   switch(addr->type->type)
 777     {
 778     case BASIC:
 779     case ENUM:
 780     case CONST:
 781     case POINTER:
 782       DEBUG_PrintBasic(addr, 1, format);
 783       break;
 784     case STRUCT:
 785       DEBUG_nchar += fprintf(stderr, "{");
 786       for(m = addr->type->un.structure.members; m; m = m->next)
 787         {
 788           addr1 = *addr;
 789           DEBUG_FindStructElement(&addr1, m->name,
 790                                   (int *) &value);
 791           DEBUG_nchar += fprintf(stderr, "%s=", m->name);
 792           DEBUG_Print(&addr1, 1, format, level + 1);
 793           if( m->next != NULL )
 794             {
 795               DEBUG_nchar += fprintf(stderr, ", ");
 796             }
 797           if( DEBUG_nchar > DEBUG_maxchar )
 798             {
 799               fprintf(stderr, "...}");
 800               goto leave;
 801             }
 802         }
 803       DEBUG_nchar += fprintf(stderr, "}");
 804       break;
 805     case ARRAY:
 806       /*
 807        * Loop over all of the entries, printing stuff as we go.
 808        */
 809       size = DEBUG_GetObjectSize(addr->type->un.array.basictype);
 810       if( size == 1 )
 811         {
 812           /*
 813            * Special handling for character arrays.
 814            */
 815           pnt = (char *) addr->off;
 816           DEBUG_nchar += fprintf(stderr, "\"");
 817           for( i=addr->type->un.array.start; i < addr->type->un.array.end; i++ )
 818             {
 819               fputc(*pnt++, stderr);
 820               DEBUG_nchar++;
 821               if( DEBUG_nchar > DEBUG_maxchar )
 822                 {
 823                   fprintf(stderr, "...\"");
 824                   goto leave;
 825                 }
 826             }
 827           DEBUG_nchar += fprintf(stderr, "\"");
 828           break;
 829         }
 830       addr1 = *addr;
 831       addr1.type = addr->type->un.array.basictype;
 832       DEBUG_nchar += fprintf(stderr, "{");
 833       for( i=addr->type->un.array.start; i <= addr->type->un.array.end; i++ )
 834         {
 835           DEBUG_Print(&addr1, 1, format, level + 1);
 836           addr1.off += size;
 837           if( i == addr->type->un.array.end )
 838             {
 839               DEBUG_nchar += fprintf(stderr, "}");
 840             }
 841           else
 842             {
 843               DEBUG_nchar += fprintf(stderr, ", ");
 844             }
 845           if( DEBUG_nchar > DEBUG_maxchar )
 846             {
 847               fprintf(stderr, "...}");
 848               goto leave;
 849             }
 850         }
 851       break;
 852     default:
 853       assert(FALSE);
 854       break;
 855     }
 856
 857 leave:
 858
 859   if( level == 0 )
 860     {
 861       DEBUG_nchar += fprintf(stderr, "\n");
 862     }
 863   return;
 864 }
 865
 866 int
 867 DEBUG_DumpTypes()
 868 {
 869   struct datatype * dt = NULL;
 870   struct member * m;
 871   int hash;
 872   int nm;
 873   char * name;
 874   char * member_name;
 875
 876   for(hash = 0; hash < NR_TYPE_HASH + 1; hash++)
 877     {
 878       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 879         {
 880           name =  "none";
 881           if( dt->name != NULL )
 882             {
 883               name = dt->name;
 884             }
 885           switch(dt->type)
 886             {
 887             case BASIC:
 888               fprintf(stderr, "0x%p - BASIC(%s)\n",
 889                       dt, name);
 890               break;
 891             case POINTER:
 892               fprintf(stderr, "0x%p - POINTER(%s)(%p)\n",
 893                       dt, name, dt->un.pointer.pointsto);
 894               break;
 895             case STRUCT:
 896               member_name = "none";
 897               nm = 0;
 898               if( dt->un.structure.members != NULL
 899                   && dt->un.structure.members->name != NULL )
 900                 {
 901                   member_name = dt->un.structure.members->name;
 902                   for( m = dt->un.structure.members; m; m = m->next)
 903                     {
 904                       nm++;
 905                     }
 906                 }
 907               fprintf(stderr, "0x%p - STRUCT(%s) %d %d %s\n", dt, name,
 908                       dt->un.structure.size, nm, member_name);
 909               break;
 910             case ARRAY:
 911               fprintf(stderr, "0x%p - ARRAY(%s)(%p)\n",
 912                       dt, name, dt->un.array.basictype);
 913               break;
 914             case ENUM:
 915               fprintf(stderr, "0x%p - ENUM(%s)\n",
 916                       dt, name);
 917               break;
 918             case BITFIELD:
 919               fprintf(stderr, "0x%p - BITFIELD(%s)\n", dt, name);
 920               break;
 921             case FUNC:
 922               fprintf(stderr, "0x%p - FUNC(%s)(%p)\n",
 923                       dt, name, dt->un.funct.rettype);
 924               break;
 925             case CONST:
 926             case TYPEDEF:
 927               fprintf(stderr, "What???\n");
 928               break;
 929             }
 930         }
 931     }
 932   return TRUE;
 933 }
 934
 935
 936 enum debug_type DEBUG_GetType(struct datatype * dt)
 937 {
 938   return dt->type;
 939 }
 940
 941 struct datatype *
 942 DEBUG_TypeCast(enum debug_type type, const char * name)
 943 {
 944   int                     hash;
 945   struct datatype       * rtn;
 946
 947   /*
 948    * The last bucket is special, and is used to hold typeless names.
 949    */
 950   if( name == NULL )
 951     {
 952       hash = NR_TYPE_HASH;
 953     }
 954   else
 955     {
 956       hash = type_hash(name);
 957     }
 958
 959   rtn = DEBUG_LookupDataType(type, hash, name);
 960
 961   return rtn;
 962
 963 }
 964
 965 int
 966 DEBUG_PrintTypeCast(struct datatype * dt)
 967 {
 968   char          * name;
 969
 970   name =  "none";
 971   if( dt->name != NULL )
 972     {
 973       name = dt->name;
 974     }
 975
 976   switch(dt->type)
 977     {
 978     case BASIC:
 979       fprintf(stderr, "%s", name);
 980       break;
 981     case POINTER:
 982       DEBUG_PrintTypeCast(dt->un.pointer.pointsto);
 983       fprintf(stderr, "*");
 984       break;
 985     case STRUCT:
 986       fprintf(stderr, "struct %s", name);
 987       break;
 988     case ARRAY:
 989       fprintf(stderr, "%s[]", name);
 990       break;
 991     case ENUM:
 992       fprintf(stderr, "enum %s", name);
 993       break;
 994     case BITFIELD:
 995       fprintf(stderr, "unsigned %s", name);
 996       break;
 997     case FUNC:
 998       DEBUG_PrintTypeCast(dt->un.funct.rettype);
 999       fprintf(stderr, "(*%s)()", name);
1000       break;
1001     case CONST:
1002     case TYPEDEF:
1003       fprintf(stderr, "What???\n");
1004       break;
1005     }
1006
1007   return TRUE;
1008 }
1009
1010