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 "config.h"
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13
  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 "pe_image.h"
  22 #include "peexe.h"
  23 #include "debugger.h"
  24
  25 #define NR_TYPE_HASH 521
  26
  27 int               DEBUG_nchar;
  28 static int        DEBUG_maxchar = 1024;
  29
  30 struct en_values
  31 {
  32   struct en_values* next;
  33   char            * name;
  34   int               value;
  35 };
  36
  37 struct member
  38 {
  39   struct member   * next;
  40   char            * name;
  41   struct datatype * type;
  42   int               offset;
  43   int               size;
  44 };
  45
  46 struct datatype
  47 {
  48   enum  debug_type type;
  49   struct datatype * next;
  50   char * name;
  51   union
  52   {
  53     struct
  54     {
  55       char    basic_type;
  56       char  * output_format;
  57       char    basic_size;
  58       unsigned b_signed:1;
  59     } basic;
  60     struct
  61     {
  62       unsigned short bitoff;
  63       unsigned short nbits;
  64       struct datatype * basetype;
  65     } bitfield;
  66
  67     struct
  68     {
  69       struct datatype * pointsto;
  70     } pointer;
  71     struct
  72     {
  73       struct datatype * rettype;
  74     } funct;
  75     struct
  76     {
  77       int               start;
  78       int               end;
  79       struct datatype * basictype;
  80     } array;
  81     struct
  82     {
  83       int               size;
  84       struct member * members;
  85     } structure;
  86     struct
  87     {
  88       struct en_values * members;
  89     } enumeration;
  90   } un;
  91 };
  92
  93 #define BASIC_INT               1
  94 #define BASIC_CHAR              2
  95 #define BASIC_LONG              3
  96 #define BASIC_UINT              4
  97 #define BASIC_LUI               5
  98 #define BASIC_LONGLONG          6
  99 #define BASIC_ULONGLONGI        7
 100 #define BASIC_SHORT             8
 101 #define BASIC_SHORTUI           9
 102 #define BASIC_SCHAR             10
 103 #define BASIC_UCHAR             11
 104 #define BASIC_FLT               12
 105 #define BASIC_LONG_DOUBLE       13
 106 #define BASIC_DOUBLE            14
 107 #define BASIC_CMPLX_INT         15
 108 #define BASIC_CMPLX_FLT         16
 109 #define BASIC_CMPLX_DBL         17
 110 #define BASIC_CMPLX_LONG_DBL    18
 111 #define BASIC_VOID              19
 112
 113 struct datatype * DEBUG_TypeInt = NULL;
 114 struct datatype * DEBUG_TypeIntConst = NULL;
 115 struct datatype * DEBUG_TypeUSInt = NULL;
 116 struct datatype * DEBUG_TypeString = NULL;
 117
 118 /*
 119  * All of the types that have been defined so far.
 120  */
 121 static struct datatype * type_hash_table[NR_TYPE_HASH + 1];
 122 static struct datatype * pointer_types = NULL;
 123
 124 static unsigned int type_hash( const char * name )
 125 {
 126     unsigned int hash = 0;
 127     unsigned int tmp;
 128     const char * p;
 129
 130     p = name;
 131
 132     while (*p)
 133       {
 134         hash = (hash << 4) + *p++;
 135
 136         if( (tmp = (hash & 0xf0000000)) )
 137           {
 138             hash ^= tmp >> 24;
 139           }
 140         hash &= ~tmp;
 141       }
 142     return hash % NR_TYPE_HASH;
 143 }
 144
 145
 146 static struct datatype *
 147 DEBUG_InitBasic(int type, char * name, int size, int b_signed,
 148                             char * output_format)
 149 {
 150   int hash;
 151
 152   struct datatype * dt;
 153   dt = (struct datatype *) DBG_alloc(sizeof(struct datatype));
 154
 155   if( dt != NULL )
 156     {
 157       if( name != NULL )
 158         {
 159           hash = type_hash(name);
 160         }
 161       else
 162         {
 163           hash = NR_TYPE_HASH;
 164         }
 165
 166       dt->type = DT_BASIC;
 167       dt->name = name;
 168       dt->next = type_hash_table[hash];
 169       type_hash_table[hash] = dt;
 170       dt->un.basic.basic_type = type;
 171       dt->un.basic.basic_size = size;
 172       dt->un.basic.b_signed = b_signed;
 173       dt->un.basic.output_format = output_format;
 174     }
 175
 176   return dt;
 177 }
 178
 179 static
 180 struct datatype *
 181 DEBUG_LookupDataType(enum debug_type xtype, int hash, const char * typename)
 182 {
 183   struct datatype * dt = NULL;
 184
 185   if( typename != NULL )
 186     {
 187       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 188         {
 189           if( xtype != dt->type || dt->name == NULL
 190               || dt->name[0] != typename[0])
 191             {
 192               continue;
 193             }
 194
 195           if( strcmp(dt->name, typename) == 0 )
 196             {
 197               return dt;
 198             }
 199         }
 200     }
 201
 202   return dt;
 203 }
 204
 205 struct datatype *
 206 DEBUG_NewDataType(enum debug_type xtype, const char * typename)
 207 {
 208   struct datatype * dt = NULL;
 209   int hash;
 210
 211   /*
 212    * The last bucket is special, and is used to hold typeless names.
 213    */
 214   if( typename == NULL )
 215     {
 216       hash = NR_TYPE_HASH;
 217     }
 218   else
 219     {
 220       hash = type_hash(typename);
 221     }
 222
 223   dt = DEBUG_LookupDataType(xtype, hash, typename);
 224
 225   if( dt == NULL )
 226     {
 227       dt = (struct datatype *) DBG_alloc(sizeof(struct datatype));
 228
 229       if( dt != NULL )
 230         {
 231           memset(dt, 0, sizeof(*dt));
 232
 233           dt->type = xtype;
 234           if( typename != NULL )
 235             {
 236               dt->name = DBG_strdup(typename);
 237             }
 238           else
 239             {
 240               dt->name = NULL;
 241             }
 242           if( xtype == DT_POINTER )
 243             {
 244               dt->next = pointer_types;
 245               pointer_types = dt;
 246             }
 247           else
 248             {
 249               dt->next = type_hash_table[hash];
 250               type_hash_table[hash] = dt;
 251             }
 252         }
 253     }
 254
 255   return dt;
 256 }
 257
 258 struct datatype *
 259 DEBUG_FindOrMakePointerType(struct datatype * reftype)
 260 {
 261   struct datatype * dt = NULL;
 262
 263   if( reftype != NULL )
 264     {
 265       for( dt = pointer_types; dt; dt = dt->next )
 266         {
 267           if( dt->type != DT_POINTER )
 268             {
 269               continue;
 270             }
 271
 272           if( dt->un.pointer.pointsto == reftype )
 273             {
 274               return dt;
 275             }
 276         }
 277     }
 278
 279   if( dt == NULL )
 280     {
 281       dt = (struct datatype *) DBG_alloc(sizeof(struct datatype));
 282
 283       if( dt != NULL )
 284         {
 285           dt->type = DT_POINTER;
 286           dt->un.pointer.pointsto = reftype;
 287           dt->next = pointer_types;
 288           pointer_types = dt;
 289         }
 290     }
 291
 292   return dt;
 293 }
 294
 295 void
 296 DEBUG_InitTypes(void)
 297 {
 298   static int beenhere = 0;
 299   struct datatype * chartype;
 300
 301   if( beenhere++ != 0 )
 302     {
 303       return;
 304     }
 305
 306   /*
 307    * Special version of int used with constants of various kinds.
 308    */
 309   DEBUG_TypeIntConst = DEBUG_InitBasic(BASIC_INT,NULL,4,1,"%d");
 310
 311   /*
 312    * Initialize a few builtin types.
 313    */
 314
 315   DEBUG_TypeInt = DEBUG_InitBasic(BASIC_INT,"int",4,1,"%d");
 316   chartype = DEBUG_InitBasic(BASIC_CHAR,"char",1,1,"'%c'");
 317   DEBUG_InitBasic(BASIC_LONG,"long int",4,1,"%d");
 318   DEBUG_TypeUSInt = DEBUG_InitBasic(BASIC_UINT,"unsigned int",4,0,"%d");
 319   DEBUG_InitBasic(BASIC_LUI,"long unsigned int",4,0,"%d");
 320   DEBUG_InitBasic(BASIC_LONGLONG,"long long int",8,1,"%ld");
 321   DEBUG_InitBasic(BASIC_ULONGLONGI,"long long unsigned int",8,0,"%ld");
 322   DEBUG_InitBasic(BASIC_SHORT,"short int",2,1,"%d");
 323   DEBUG_InitBasic(BASIC_SHORTUI,"short unsigned int",2,0,"%d");
 324   DEBUG_InitBasic(BASIC_SCHAR,"signed char",1,1,"'%c'");
 325   DEBUG_InitBasic(BASIC_UCHAR,"unsigned char",1,0,"'%c'");
 326   DEBUG_InitBasic(BASIC_FLT,"float",4,0,"%f");
 327   DEBUG_InitBasic(BASIC_LONG_DOUBLE,"double",8,0,"%lf");
 328   DEBUG_InitBasic(BASIC_DOUBLE,"long double",12,0,NULL);
 329   DEBUG_InitBasic(BASIC_CMPLX_INT,"complex int",8,1,NULL);
 330   DEBUG_InitBasic(BASIC_CMPLX_FLT,"complex float",8,0,NULL);
 331   DEBUG_InitBasic(BASIC_CMPLX_DBL,"complex double",16,0,NULL);
 332   DEBUG_InitBasic(BASIC_CMPLX_LONG_DBL,"complex long double",24,0,NULL);
 333   DEBUG_InitBasic(BASIC_VOID,"void",0,0,NULL);
 334
 335   DEBUG_TypeString = DEBUG_NewDataType(DT_POINTER, NULL);
 336   DEBUG_SetPointerType(DEBUG_TypeString, chartype);
 337
 338   /*
 339    * Now initialize the builtins for codeview.
 340    */
 341   DEBUG_InitCVDataTypes();
 342
 343 }
 344
 345 long long int
 346 DEBUG_GetExprValue(const DBG_VALUE *_value, char ** format)
 347 {
 348   unsigned int rtn;
 349   struct datatype * type2 = NULL;
 350   struct en_values * e;
 351   char * def_format = "0x%x";
 352   DBG_VALUE value = *_value;
 353
 354   assert(_value->cookie == DV_TARGET || _value->cookie == DV_HOST);
 355
 356   rtn = 0;
 357   /* FIXME? I don't quite get this...
 358    * if this is wrong, value.addr shall be linearized
 359    */
 360   value.addr.seg = 0;
 361   assert(value.type != NULL);
 362
 363   switch(value.type->type)
 364     {
 365     case DT_BASIC:
 366
 367       rtn = 0;
 368       /* FIXME: following code implies i386 byte ordering */
 369       if (_value->cookie == DV_TARGET) {
 370          if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn,
 371                                      value.type->un.basic.basic_size))
 372             return 0;
 373       } else {
 374          memcpy(&rtn, (void*)value.addr.off, value.type->un.basic.basic_size);
 375       }
 376
 377       if(    (value.type->un.basic.b_signed)
 378           && ((value.type->un.basic.basic_size & 3) != 0)
 379           && ((rtn >> (value.type->un.basic.basic_size * 8 - 1)) != 0) )
 380         {
 381           rtn = rtn | ((-1) << (value.type->un.basic.basic_size * 8));
 382         }
 383       if( value.type->un.basic.output_format != NULL )
 384         {
 385           def_format = value.type->un.basic.output_format;
 386         }
 387
 388       /*
 389        * Check for single character prints that are out of range.
 390        */
 391       if( value.type->un.basic.basic_size == 1
 392           && strcmp(def_format, "'%c'") == 0
 393           && ((rtn < 0x20) || (rtn > 0x80)) )
 394         {
 395           def_format = "%d";
 396         }
 397       break;
 398     case DT_POINTER:
 399       if (_value->cookie == DV_TARGET) {
 400          if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn, sizeof(void*)))
 401             return 0;
 402       } else {
 403          rtn = *(unsigned int*)(value.addr.off);
 404       }
 405
 406       type2 = value.type->un.pointer.pointsto;
 407
 408       if (!type2)
 409       {
 410         def_format = "Internal symbol error: unable to access memory location 0x%08x";
 411         rtn = 0;
 412         break;
 413       }
 414
 415       if( type2->type == DT_BASIC && type2->un.basic.basic_size == 1 )
 416         {
 417            if ( _value->cookie == DV_TARGET ) {
 418               char ch;
 419               def_format = "\"%S\"";
 420               if (!DEBUG_READ_MEM_VERBOSE((void*)rtn, &ch, 1))
 421                  return 0;
 422            } else {
 423               def_format = "\"%s\"";
 424            }
 425         }
 426       else
 427         {
 428           def_format = "0x%8.8x";
 429         }
 430       break;
 431     case DT_ARRAY:
 432     case DT_STRUCT:
 433       assert(_value->cookie == DV_TARGET);
 434       if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn, sizeof(rtn)))
 435          return 0;
 436       def_format = "0x%8.8x";
 437       break;
 438     case DT_ENUM:
 439       assert(_value->cookie == DV_TARGET);
 440       if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn, sizeof(rtn)))
 441          return 0;
 442       for(e = value.type->un.enumeration.members; e; e = e->next )
 443         {
 444           if( e->value == rtn )
 445             {
 446               break;
 447             }
 448         }
 449       if( e != NULL )
 450         {
 451           rtn = (int) e->name;
 452           def_format = "%s";
 453         }
 454       else
 455         {
 456           def_format = "%d";
 457         }
 458       break;
 459     default:
 460       rtn = 0;
 461       break;
 462     }
 463
 464
 465   if( format != NULL )
 466     {
 467       *format = def_format;
 468     }
 469   return rtn;
 470 }
 471
 472 unsigned int
 473 DEBUG_TypeDerefPointer(const DBG_VALUE *value, struct datatype ** newtype)
 474 {
 475   DBG_ADDR      addr = value->addr;
 476   unsigned int  val;
 477
 478   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 479
 480   *newtype = NULL;
 481
 482   /*
 483    * Make sure that this really makes sense.
 484    */
 485   if( value->type->type != DT_POINTER )
 486      return 0;
 487
 488   if (value->cookie == DV_TARGET) {
 489      if (!DEBUG_READ_MEM((void*)value->addr.off, &val, sizeof(val)))
 490         return 0;
 491   } else {
 492      val = *(unsigned int*)value->addr.off;
 493   }
 494
 495   *newtype = value->type->un.pointer.pointsto;
 496   addr.off = val;
 497   return DEBUG_ToLinear(&addr); /* FIXME: is this right (or "better") ? */
 498 }
 499
 500 unsigned int
 501 DEBUG_FindStructElement(DBG_VALUE* value, const char * ele_name, int * tmpbuf)
 502 {
 503   struct member * m;
 504   unsigned int    mask;
 505
 506   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 507
 508   /*
 509    * Make sure that this really makes sense.
 510    */
 511   if( value->type->type != DT_STRUCT )
 512     {
 513       value->type = NULL;
 514       return FALSE;
 515     }
 516
 517   for(m = value->type->un.structure.members; m; m = m->next)
 518     {
 519       if( strcmp(m->name, ele_name) == 0 )
 520         {
 521           value->type = m->type;
 522           if( (m->offset & 7) != 0 || (m->size & 7) != 0)
 523             {
 524               /*
 525                * Bitfield operation.  We have to extract the field and store
 526                * it in a temporary buffer so that we get it all right.
 527                */
 528               *tmpbuf = ((*(int* ) (value->addr.off + (m->offset >> 3))) >> (m->offset & 7));
 529               value->addr.off = (int) tmpbuf;
 530
 531               mask = 0xffffffff << (m->size);
 532               *tmpbuf &= ~mask;
 533               /*
 534                * OK, now we have the correct part of the number.
 535                * Check to see whether the basic type is signed or not, and if so,
 536                * we need to sign extend the number.
 537                */
 538               if( m->type->type == DT_BASIC && m->type->un.basic.b_signed != 0
 539                   && (*tmpbuf & (1 << (m->size - 1))) != 0 )
 540                 {
 541                   *tmpbuf |= mask;
 542                 }
 543             }
 544           else
 545             {
 546               value->addr.off += (m->offset >> 3);
 547             }
 548           return TRUE;
 549         }
 550     }
 551
 552   value->type = NULL;
 553   return FALSE;
 554 }
 555
 556 int
 557 DEBUG_SetStructSize(struct datatype * dt, int size)
 558 {
 559   assert(dt->type == DT_STRUCT);
 560
 561   if( dt->un.structure.members != NULL )
 562     {
 563       return FALSE;
 564     }
 565
 566   dt->un.structure.size = size;
 567   dt->un.structure.members = NULL;
 568
 569   return TRUE;
 570 }
 571
 572 int
 573 DEBUG_CopyFieldlist(struct datatype * dt, struct datatype * dt2)
 574 {
 575
 576   assert( dt->type == dt2->type && ((dt->type == DT_STRUCT) || (dt->type == DT_ENUM)));
 577
 578   if( dt->type == DT_STRUCT )
 579     {
 580       dt->un.structure.members = dt2->un.structure.members;
 581     }
 582   else
 583     {
 584       dt->un.enumeration.members = dt2->un.enumeration.members;
 585     }
 586
 587   return TRUE;
 588 }
 589
 590 int
 591 DEBUG_AddStructElement(struct datatype * dt, char * name, struct datatype * type,
 592                        int offset, int size)
 593 {
 594   struct member * m;
 595   struct member * last;
 596   struct en_values * e;
 597
 598   if( dt->type == DT_STRUCT )
 599     {
 600       for(last = dt->un.structure.members; last; last = last->next)
 601         {
 602           if(    (last->name[0] == name[0])
 603               && (strcmp(last->name, name) == 0) )
 604             {
 605               return TRUE;
 606             }
 607           if( last->next == NULL )
 608             {
 609               break;
 610             }
 611         }
 612       m = (struct member *) DBG_alloc(sizeof(struct member));
 613       if( m == FALSE )
 614         {
 615           return FALSE;
 616         }
 617
 618       m->name = DBG_strdup(name);
 619       m->type = type;
 620       m->offset = offset;
 621       m->size = size;
 622       if( last == NULL )
 623         {
 624           m->next = dt->un.structure.members;
 625           dt->un.structure.members = m;
 626         }
 627       else
 628         {
 629           last->next = m;
 630           m->next = NULL;
 631         }
 632       /*
 633        * If the base type is bitfield, then adjust the offsets here so that we
 634        * are able to look things up without lots of falter-all.
 635        */
 636       if( type->type == DT_BITFIELD )
 637         {
 638           m->offset += m->type->un.bitfield.bitoff;
 639           m->size = m->type->un.bitfield.nbits;
 640           m->type = m->type->un.bitfield.basetype;
 641         }
 642     }
 643   else if( dt->type == DT_ENUM )
 644     {
 645       e = (struct en_values *) DBG_alloc(sizeof(struct en_values));
 646       if( e == FALSE )
 647         {
 648           return FALSE;
 649         }
 650
 651       e->name = DBG_strdup(name);
 652       e->value = offset;
 653       e->next = dt->un.enumeration.members;
 654       dt->un.enumeration.members = e;
 655     }
 656   else
 657     {
 658       assert(FALSE);
 659     }
 660   return TRUE;
 661 }
 662
 663 struct datatype *
 664 DEBUG_GetPointerType(struct datatype * dt)
 665 {
 666   if( dt->type == DT_POINTER )
 667     {
 668       return dt->un.pointer.pointsto;
 669     }
 670
 671   return NULL;
 672 }
 673
 674 int
 675 DEBUG_SetPointerType(struct datatype * dt, struct datatype * dt2)
 676 {
 677   switch(dt->type)
 678     {
 679     case DT_POINTER:
 680       dt->un.pointer.pointsto = dt2;
 681       break;
 682     case DT_FUNC:
 683       dt->un.funct.rettype = dt2;
 684       break;
 685     default:
 686       assert(FALSE);
 687     }
 688
 689   return TRUE;
 690 }
 691
 692 int
 693 DEBUG_SetArrayParams(struct datatype * dt, int min, int max, struct datatype * dt2)
 694 {
 695   assert(dt->type == DT_ARRAY);
 696   dt->un.array.start = min;
 697   dt->un.array.end   = max;
 698   dt->un.array.basictype = dt2;
 699
 700   return TRUE;
 701 }
 702
 703 int
 704 DEBUG_SetBitfieldParams(struct datatype * dt, int offset, int nbits,
 705                         struct datatype * dt2)
 706 {
 707   assert(dt->type == DT_BITFIELD);
 708   dt->un.bitfield.bitoff   = offset;
 709   dt->un.bitfield.nbits    = nbits;
 710   dt->un.bitfield.basetype = dt2;
 711
 712   return TRUE;
 713 }
 714
 715 int DEBUG_GetObjectSize(struct datatype * dt)
 716 {
 717   if( dt == NULL )
 718     {
 719       return 0;
 720     }
 721
 722   switch(dt->type)
 723     {
 724     case DT_BASIC:
 725       return dt->un.basic.basic_size;
 726     case DT_POINTER:
 727       return sizeof(int *);
 728     case DT_STRUCT:
 729       return dt->un.structure.size;
 730     case DT_ENUM:
 731       return sizeof(int);
 732     case DT_ARRAY:
 733       return (dt->un.array.end - dt->un.array.start)
 734         * DEBUG_GetObjectSize(dt->un.array.basictype);
 735     case DT_BITFIELD:
 736       /*
 737        * Bitfields have to be handled seperately later on
 738        * when we insert the element into the structure.
 739        */
 740       return 0;
 741     case DT_TYPEDEF:
 742     case DT_FUNC:
 743     case DT_CONST:
 744       assert(FALSE);
 745     }
 746   return 0;
 747 }
 748
 749 unsigned int
 750 DEBUG_ArrayIndex(const DBG_VALUE * value, DBG_VALUE * result, int index)
 751 {
 752   int size;
 753
 754   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 755
 756   /*
 757    * Make sure that this really makes sense.
 758    */
 759   if( value->type->type == DT_POINTER )
 760     {
 761       /*
 762        * Get the base type, so we know how much to index by.
 763        */
 764       size = DEBUG_GetObjectSize(value->type->un.pointer.pointsto);
 765       result->type = value->type->un.pointer.pointsto;
 766       result->addr.off = (*(unsigned int*) (value->addr.off)) + size * index;
 767     }
 768   else if (value->type->type == DT_ARRAY)
 769     {
 770       size = DEBUG_GetObjectSize(value->type->un.array.basictype);
 771       result->type = value->type->un.array.basictype;
 772       result->addr.off = value->addr.off + size * (index - value->type->un.array.start);
 773     }
 774
 775   return TRUE;
 776 }
 777
 778 /***********************************************************************
 779  *           DEBUG_Print
 780  *
 781  * Implementation of the 'print' command.
 782  */
 783 void
 784 DEBUG_Print( const DBG_VALUE *value, int count, char format, int level )
 785 {
 786   DBG_VALUE       val1;
 787   int             i;
 788   struct member * m;
 789   char          * pnt;
 790   int             size;
 791   int             xval;
 792
 793   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 794
 795   if (count != 1)
 796     {
 797       fprintf( stderr, "Count other than 1 is meaningless in 'print' command\n" );
 798       return;
 799     }
 800
 801   if( value->type == NULL )
 802   {
 803       /* No type, just print the addr value */
 804       if (value->addr.seg && (value->addr.seg != 0xffffffff))
 805           DEBUG_nchar += fprintf( stderr, "0x%04lx: ", value->addr.seg );
 806       DEBUG_nchar += fprintf( stderr, "0x%08lx", value->addr.off );
 807       goto leave;
 808   }
 809
 810   if( level == 0 )
 811     {
 812       DEBUG_nchar = 0;
 813     }
 814
 815   if( DEBUG_nchar > DEBUG_maxchar )
 816     {
 817       fprintf(stderr, "...");
 818       goto leave;
 819     }
 820
 821   if( format == 'i' || format == 's' || format == 'w' || format == 'b' )
 822     {
 823       fprintf( stderr, "Format specifier '%c' is meaningless in 'print' command\n", format );
 824       format = '\0';
 825     }
 826
 827   switch(value->type->type)
 828     {
 829     case DT_BASIC:
 830     case DT_ENUM:
 831     case DT_CONST:
 832     case DT_POINTER:
 833       DEBUG_PrintBasic(value, 1, format);
 834       break;
 835     case DT_STRUCT:
 836       DEBUG_nchar += fprintf(stderr, "{");
 837       for(m = value->type->un.structure.members; m; m = m->next)
 838         {
 839           val1 = *value;
 840           DEBUG_FindStructElement(&val1, m->name, &xval);
 841           DEBUG_nchar += fprintf(stderr, "%s=", m->name);
 842           DEBUG_Print(&val1, 1, format, level + 1);
 843           if( m->next != NULL )
 844             {
 845               DEBUG_nchar += fprintf(stderr, ", ");
 846             }
 847           if( DEBUG_nchar > DEBUG_maxchar )
 848             {
 849               fprintf(stderr, "...}");
 850               goto leave;
 851             }
 852         }
 853       DEBUG_nchar += fprintf(stderr, "}");
 854       break;
 855     case DT_ARRAY:
 856       /*
 857        * Loop over all of the entries, printing stuff as we go.
 858        */
 859       size = DEBUG_GetObjectSize(value->type->un.array.basictype);
 860       if( size == 1 )
 861         {
 862           /*
 863            * Special handling for character arrays.
 864            */
 865           pnt = (char *) value->addr.off;
 866           DEBUG_nchar += fprintf(stderr, "\"");
 867           for( i=value->type->un.array.start; i < value->type->un.array.end; i++ )
 868             {
 869               fputc(*pnt++, stderr);
 870               DEBUG_nchar++;
 871               if( DEBUG_nchar > DEBUG_maxchar )
 872                 {
 873                   fprintf(stderr, "...\"");
 874                   goto leave;
 875                 }
 876             }
 877           DEBUG_nchar += fprintf(stderr, "\"");
 878           break;
 879         }
 880       val1 = *value;
 881       val1.type = value->type->un.array.basictype;
 882       DEBUG_nchar += fprintf(stderr, "{");
 883       for( i=value->type->un.array.start; i <= value->type->un.array.end; i++ )
 884         {
 885           DEBUG_Print(&val1, 1, format, level + 1);
 886           val1.addr.off += size;
 887           if( i == value->type->un.array.end )
 888             {
 889               DEBUG_nchar += fprintf(stderr, "}");
 890             }
 891           else
 892             {
 893               DEBUG_nchar += fprintf(stderr, ", ");
 894             }
 895           if( DEBUG_nchar > DEBUG_maxchar )
 896             {
 897               fprintf(stderr, "...}");
 898               goto leave;
 899             }
 900         }
 901       break;
 902     default:
 903       assert(FALSE);
 904       break;
 905     }
 906
 907 leave:
 908
 909   if( level == 0 )
 910     {
 911       DEBUG_nchar += fprintf(stderr, "\n");
 912     }
 913   return;
 914 }
 915
 916 int
 917 DEBUG_DumpTypes(void)
 918 {
 919   struct datatype * dt = NULL;
 920   struct member * m;
 921   int hash;
 922   int nm;
 923   char * name;
 924   char * member_name;
 925
 926   for(hash = 0; hash < NR_TYPE_HASH + 1; hash++)
 927     {
 928       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 929         {
 930           name =  "none";
 931           if( dt->name != NULL )
 932             {
 933               name = dt->name;
 934             }
 935           switch(dt->type)
 936             {
 937             case DT_BASIC:
 938               fprintf(stderr, "0x%p - BASIC(%s)\n",
 939                       dt, name);
 940               break;
 941             case DT_POINTER:
 942               fprintf(stderr, "0x%p - POINTER(%s)(%p)\n",
 943                       dt, name, dt->un.pointer.pointsto);
 944               break;
 945             case DT_STRUCT:
 946               member_name = "none";
 947               nm = 0;
 948               if( dt->un.structure.members != NULL
 949                   && dt->un.structure.members->name != NULL )
 950                 {
 951                   member_name = dt->un.structure.members->name;
 952                   for( m = dt->un.structure.members; m; m = m->next)
 953                     {
 954                       nm++;
 955                     }
 956                 }
 957               fprintf(stderr, "0x%p - STRUCT(%s) %d %d %s\n", dt, name,
 958                       dt->un.structure.size, nm, member_name);
 959               break;
 960             case DT_ARRAY:
 961               fprintf(stderr, "0x%p - ARRAY(%s)(%p)\n",
 962                       dt, name, dt->un.array.basictype);
 963               break;
 964             case DT_ENUM:
 965               fprintf(stderr, "0x%p - ENUM(%s)\n",
 966                       dt, name);
 967               break;
 968             case DT_BITFIELD:
 969               fprintf(stderr, "0x%p - BITFIELD(%s)\n", dt, name);
 970               break;
 971             case DT_FUNC:
 972               fprintf(stderr, "0x%p - FUNC(%s)(%p)\n",
 973                       dt, name, dt->un.funct.rettype);
 974               break;
 975             case DT_CONST:
 976             case DT_TYPEDEF:
 977               fprintf(stderr, "What???\n");
 978               break;
 979             }
 980         }
 981     }
 982   return TRUE;
 983 }
 984
 985
 986 enum debug_type DEBUG_GetType(struct datatype * dt)
 987 {
 988   return dt->type;
 989 }
 990
 991 struct datatype *
 992 DEBUG_TypeCast(enum debug_type type, const char * name)
 993 {
 994   int                     hash;
 995   struct datatype       * rtn;
 996
 997   /*
 998    * The last bucket is special, and is used to hold typeless names.
 999    */
1000   if( name == NULL )
1001     {
1002       hash = NR_TYPE_HASH;
1003     }
1004   else
1005     {
1006       hash = type_hash(name);
1007     }
1008
1009   rtn = DEBUG_LookupDataType(type, hash, name);
1010
1011   return rtn;
1012
1013 }
1014
1015 int
1016 DEBUG_PrintTypeCast(const struct datatype * dt)
1017 {
1018   const char* name = "none";
1019
1020   if( dt->name != NULL )
1021     {
1022       name = dt->name;
1023     }
1024
1025   switch(dt->type)
1026     {
1027     case DT_BASIC:
1028       fprintf(stderr, "%s", name);
1029       break;
1030     case DT_POINTER:
1031       DEBUG_PrintTypeCast(dt->un.pointer.pointsto);
1032       fprintf(stderr, "*");
1033       break;
1034     case DT_STRUCT:
1035       fprintf(stderr, "struct %s", name);
1036       break;
1037     case DT_ARRAY:
1038       fprintf(stderr, "%s[]", name);
1039       break;
1040     case DT_ENUM:
1041       fprintf(stderr, "enum %s", name);
1042       break;
1043     case DT_BITFIELD:
1044       fprintf(stderr, "unsigned %s", name);
1045       break;
1046     case DT_FUNC:
1047       DEBUG_PrintTypeCast(dt->un.funct.rettype);
1048       fprintf(stderr, "(*%s)()", name);
1049       break;
1050     case DT_CONST:
1051     case DT_TYPEDEF:
1052       fprintf(stderr, "What???\n");
1053       break;
1054     }
1055
1056   return TRUE;
1057 }
1058
1059 int DEBUG_PrintType( const DBG_VALUE *value )
1060 {
1061    assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
1062
1063    if (!value->type)
1064    {
1065       fprintf(stderr, "Unknown type\n");
1066       return FALSE;
1067    }
1068    if (!DEBUG_PrintTypeCast(value->type))
1069       return FALSE;
1070    fprintf(stderr, "\n");
1071    return TRUE;
1072 }
1073