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 <stdlib.h>
  12
  13 #include <fcntl.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #include <limits.h>
  17 #include <string.h>
  18 #include <unistd.h>
  19
  20 #include "debugger.h"
  21
  22 #define NR_TYPE_HASH 521
  23
  24 int               DEBUG_nchar;
  25 static int        DEBUG_maxchar = 1024;
  26
  27 struct en_values
  28 {
  29   struct en_values* next;
  30   char            * name;
  31   int               value;
  32 };
  33
  34 struct member
  35 {
  36   struct member   * next;
  37   char            * name;
  38   struct datatype * type;
  39   int               offset;
  40   int               size;
  41 };
  42
  43 struct datatype
  44 {
  45   enum  debug_type type;
  46   struct datatype * next;
  47   char * name;
  48   union
  49   {
  50     struct
  51     {
  52       char    basic_type;
  53       char  * output_format;
  54       char    basic_size;
  55       unsigned b_signed:1;
  56     } basic;
  57     struct
  58     {
  59       unsigned short bitoff;
  60       unsigned short nbits;
  61       struct datatype * basetype;
  62     } bitfield;
  63
  64     struct
  65     {
  66       struct datatype * pointsto;
  67     } pointer;
  68     struct
  69     {
  70       struct datatype * rettype;
  71     } funct;
  72     struct
  73     {
  74       int               start;
  75       int               end;
  76       struct datatype * basictype;
  77     } array;
  78     struct
  79     {
  80       int               size;
  81       struct member * members;
  82     } structure;
  83     struct
  84     {
  85       struct en_values * members;
  86     } enumeration;
  87   } un;
  88 };
  89
  90 #define BASIC_INT               1
  91 #define BASIC_CHAR              2
  92 #define BASIC_LONG              3
  93 #define BASIC_UINT              4
  94 #define BASIC_LUI               5
  95 #define BASIC_LONGLONG          6
  96 #define BASIC_ULONGLONGI        7
  97 #define BASIC_SHORT             8
  98 #define BASIC_SHORTUI           9
  99 #define BASIC_SCHAR             10
 100 #define BASIC_UCHAR             11
 101 #define BASIC_FLT               12
 102 #define BASIC_LONG_DOUBLE       13
 103 #define BASIC_DOUBLE            14
 104 #define BASIC_CMPLX_INT         15
 105 #define BASIC_CMPLX_FLT         16
 106 #define BASIC_CMPLX_DBL         17
 107 #define BASIC_CMPLX_LONG_DBL    18
 108 #define BASIC_VOID              19
 109
 110 struct datatype * DEBUG_TypeInt = NULL;
 111 struct datatype * DEBUG_TypeIntConst = NULL;
 112 struct datatype * DEBUG_TypeUSInt = NULL;
 113 struct datatype * DEBUG_TypeString = NULL;
 114 struct datatype * DEBUG_TypeShortUInt = NULL;
 115 /*
 116  * All of the types that have been defined so far.
 117  */
 118 static struct datatype * type_hash_table[NR_TYPE_HASH + 1];
 119 static struct datatype * pointer_types = NULL;
 120
 121 static unsigned int type_hash( const char * name )
 122 {
 123     unsigned int hash = 0;
 124     unsigned int tmp;
 125     const char * p;
 126
 127     p = name;
 128
 129     while (*p)
 130       {
 131         hash = (hash << 4) + *p++;
 132
 133         if( (tmp = (hash & 0xf0000000)) )
 134           {
 135             hash ^= tmp >> 24;
 136           }
 137         hash &= ~tmp;
 138       }
 139     return hash % NR_TYPE_HASH;
 140 }
 141
 142
 143 static struct datatype *
 144 DEBUG_InitBasic(int type, char * name, int size, int b_signed,
 145                             char * output_format)
 146 {
 147   int hash;
 148
 149   struct datatype * dt;
 150   dt = (struct datatype *) DBG_alloc(sizeof(struct datatype));
 151
 152   if( dt != NULL )
 153     {
 154       if( name != NULL )
 155         {
 156           hash = type_hash(name);
 157         }
 158       else
 159         {
 160           hash = NR_TYPE_HASH;
 161         }
 162
 163       dt->type = DT_BASIC;
 164       dt->name = name;
 165       dt->next = type_hash_table[hash];
 166       type_hash_table[hash] = dt;
 167       dt->un.basic.basic_type = type;
 168       dt->un.basic.basic_size = size;
 169       dt->un.basic.b_signed = b_signed;
 170       dt->un.basic.output_format = output_format;
 171     }
 172
 173   return dt;
 174 }
 175
 176 static
 177 struct datatype *
 178 DEBUG_LookupDataType(enum debug_type xtype, int hash, const char * typename)
 179 {
 180   struct datatype * dt = NULL;
 181
 182   if( typename != NULL )
 183     {
 184       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 185         {
 186           if( xtype != dt->type || dt->name == NULL
 187               || dt->name[0] != typename[0])
 188             {
 189               continue;
 190             }
 191
 192           if( strcmp(dt->name, typename) == 0 )
 193             {
 194               return dt;
 195             }
 196         }
 197     }
 198
 199   return dt;
 200 }
 201
 202 struct datatype *
 203 DEBUG_NewDataType(enum debug_type xtype, const char * typename)
 204 {
 205   struct datatype * dt = NULL;
 206   int hash;
 207
 208   /*
 209    * The last bucket is special, and is used to hold typeless names.
 210    */
 211   if( typename == NULL )
 212     {
 213       hash = NR_TYPE_HASH;
 214     }
 215   else
 216     {
 217       hash = type_hash(typename);
 218     }
 219
 220   dt = DEBUG_LookupDataType(xtype, hash, typename);
 221
 222   if( dt == NULL )
 223     {
 224       dt = (struct datatype *) DBG_alloc(sizeof(struct datatype));
 225
 226       if( dt != NULL )
 227         {
 228           memset(dt, 0, sizeof(*dt));
 229
 230           dt->type = xtype;
 231           if( typename != NULL )
 232             {
 233               dt->name = DBG_strdup(typename);
 234             }
 235           else
 236             {
 237               dt->name = NULL;
 238             }
 239           if( xtype == DT_POINTER )
 240             {
 241               dt->next = pointer_types;
 242               pointer_types = dt;
 243             }
 244           else
 245             {
 246               dt->next = type_hash_table[hash];
 247               type_hash_table[hash] = dt;
 248             }
 249         }
 250     }
 251
 252   return dt;
 253 }
 254
 255 struct datatype *
 256 DEBUG_FindOrMakePointerType(struct datatype * reftype)
 257 {
 258   struct datatype * dt = NULL;
 259
 260   if( reftype != NULL )
 261     {
 262       for( dt = pointer_types; dt; dt = dt->next )
 263         {
 264           if( dt->type != DT_POINTER )
 265             {
 266               continue;
 267             }
 268
 269           if( dt->un.pointer.pointsto == reftype )
 270             {
 271               return dt;
 272             }
 273         }
 274     }
 275
 276   if( dt == NULL )
 277     {
 278       dt = (struct datatype *) DBG_alloc(sizeof(struct datatype));
 279
 280       if( dt != NULL )
 281         {
 282           dt->type = DT_POINTER;
 283           dt->un.pointer.pointsto = reftype;
 284           dt->next = pointer_types;
 285           pointer_types = dt;
 286         }
 287     }
 288
 289   return dt;
 290 }
 291
 292 void
 293 DEBUG_InitTypes(void)
 294 {
 295   static int beenhere = 0;
 296   struct datatype * chartype;
 297
 298   if( beenhere++ != 0 )
 299     {
 300       return;
 301     }
 302
 303   /*
 304    * Special version of int used with constants of various kinds.
 305    */
 306   DEBUG_TypeIntConst = DEBUG_InitBasic(BASIC_INT,NULL,4,1,"%d");
 307
 308   /*
 309    * Initialize a few builtin types.
 310    */
 311
 312   DEBUG_TypeInt = DEBUG_InitBasic(BASIC_INT,"int",4,1,"%d");
 313   chartype = DEBUG_InitBasic(BASIC_CHAR,"char",1,1,"'%c'");
 314   DEBUG_InitBasic(BASIC_LONG,"long int",4,1,"%d");
 315   DEBUG_TypeUSInt = DEBUG_InitBasic(BASIC_UINT,"unsigned int",4,0,"%d");
 316   DEBUG_InitBasic(BASIC_LUI,"long unsigned int",4,0,"%d");
 317   DEBUG_InitBasic(BASIC_LONGLONG,"long long int",8,1,"%ld");
 318   DEBUG_InitBasic(BASIC_ULONGLONGI,"long long unsigned int",8,0,"%ld");
 319   DEBUG_InitBasic(BASIC_SHORT,"short int",2,1,"%d");
 320   DEBUG_TypeShortUInt = DEBUG_InitBasic(BASIC_SHORTUI,"short unsigned int",2,0,"%d");
 321   DEBUG_InitBasic(BASIC_SCHAR,"signed char",1,1,"'%c'");
 322   DEBUG_InitBasic(BASIC_UCHAR,"unsigned char",1,0,"'%c'");
 323   DEBUG_InitBasic(BASIC_FLT,"float",4,0,"%f");
 324   DEBUG_InitBasic(BASIC_LONG_DOUBLE,"double",8,0,"%lf");
 325   DEBUG_InitBasic(BASIC_DOUBLE,"long double",12,0,NULL);
 326   DEBUG_InitBasic(BASIC_CMPLX_INT,"complex int",8,1,NULL);
 327   DEBUG_InitBasic(BASIC_CMPLX_FLT,"complex float",8,0,NULL);
 328   DEBUG_InitBasic(BASIC_CMPLX_DBL,"complex double",16,0,NULL);
 329   DEBUG_InitBasic(BASIC_CMPLX_LONG_DBL,"complex long double",24,0,NULL);
 330   DEBUG_InitBasic(BASIC_VOID,"void",0,0,NULL);
 331
 332   DEBUG_TypeString = DEBUG_NewDataType(DT_POINTER, NULL);
 333   DEBUG_SetPointerType(DEBUG_TypeString, chartype);
 334
 335   /*
 336    * Now initialize the builtins for codeview.
 337    */
 338   DEBUG_InitCVDataTypes();
 339
 340 }
 341
 342 long long int
 343 DEBUG_GetExprValue(const DBG_VALUE* _value, char** format)
 344 {
 345    long long int rtn;
 346    unsigned int rtn2;
 347    struct datatype * type2 = NULL;
 348    struct en_values * e;
 349    char * def_format = "0x%x";
 350    DBG_VALUE value = *_value;
 351
 352    assert(_value->cookie == DV_TARGET || _value->cookie == DV_HOST);
 353
 354    rtn = 0; rtn2 = 0;
 355    /* FIXME? I don't quite get this...
 356     * if this is wrong, value.addr shall be linearized
 357     */
 358    value.addr.seg = 0;
 359    assert(value.type != NULL);
 360
 361    switch (value.type->type) {
 362    case DT_BASIC:
 363
 364       if (value.type->un.basic.basic_size > sizeof(rtn)) {
 365          DEBUG_Printf(DBG_CHN_ERR, "Size too large (%d)\n",
 366                       value.type->un.basic.basic_size);
 367          return 0;
 368       }
 369       /* FIXME: following code implies i386 byte ordering */
 370       if (_value->cookie == DV_TARGET) {
 371          if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn,
 372                                      value.type->un.basic.basic_size))
 373             return 0;
 374       } else {
 375          memcpy(&rtn, (void*)value.addr.off, value.type->un.basic.basic_size);
 376       }
 377
 378       if (    (value.type->un.basic.b_signed)
 379           && ((value.type->un.basic.basic_size & 3) != 0)
 380           && ((rtn >> (value.type->un.basic.basic_size * 8 - 1)) != 0)) {
 381          rtn = rtn | ((-1) << (value.type->un.basic.basic_size * 8));
 382       }
 383       if (value.type->un.basic.output_format != NULL) {
 384          def_format = value.type->un.basic.output_format;
 385       }
 386
 387       /*
 388        * Check for single character prints that are out of range.
 389        */
 390       if (   value.type->un.basic.basic_size == 1
 391           && strcmp(def_format, "'%c'") == 0
 392           && ((rtn < 0x20) || (rtn > 0x80))) {
 393          def_format = "%d";
 394       }
 395       break;
 396    case DT_POINTER:
 397       if (_value->cookie == DV_TARGET) {
 398          if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn2, sizeof(void*)))
 399             return 0;
 400       } else {
 401          rtn2 = *(unsigned int*)(value.addr.off);
 402       }
 403
 404       type2 = value.type->un.pointer.pointsto;
 405
 406       if (!type2) {
 407          def_format = "Internal symbol error: unable to access memory location 0x%08x";
 408          rtn = 0;
 409          break;
 410       }
 411
 412       if (type2->type == DT_BASIC && type2->un.basic.basic_size == 1) {
 413          if (_value->cookie == DV_TARGET) {
 414             char ch;
 415             def_format = "\"%S\"";
 416             /* FIXME: assuming little endian */
 417             if (!DEBUG_READ_MEM_VERBOSE((void*)rtn2, &ch, 1))
 418                return 0;
 419          } else {
 420             def_format = "\"%s\"";
 421          }
 422       } else {
 423          def_format = "0x%8.8x";
 424       }
 425       rtn = rtn2;
 426       break;
 427    case DT_ARRAY:
 428    case DT_STRUCT:
 429       assert(_value->cookie == DV_TARGET);
 430       if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn2, sizeof(rtn2)))
 431          return 0;
 432       rtn = rtn2;
 433       def_format = "0x%8.8x";
 434       break;
 435    case DT_ENUM:
 436       assert(_value->cookie == DV_TARGET);
 437       if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn2, sizeof(rtn2)))
 438          return 0;
 439       rtn = rtn2;
 440       def_format = "%d";
 441       for (e = value.type->un.enumeration.members; e; e = e->next) {
 442          if (e->value == rtn) {
 443             rtn = (int)e->name;
 444             def_format = "%s";
 445             break;
 446          }
 447       }
 448       break;
 449    default:
 450       rtn = 0;
 451       break;
 452    }
 453
 454
 455    if (format != NULL) {
 456       *format = def_format;
 457    }
 458    return rtn;
 459 }
 460
 461 unsigned int
 462 DEBUG_TypeDerefPointer(const DBG_VALUE *value, struct datatype ** newtype)
 463 {
 464   DBG_ADDR      addr = value->addr;
 465   unsigned int  val;
 466
 467   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 468
 469   *newtype = NULL;
 470
 471   /*
 472    * Make sure that this really makes sense.
 473    */
 474   if( value->type->type != DT_POINTER )
 475      return 0;
 476
 477   if (value->cookie == DV_TARGET) {
 478      if (!DEBUG_READ_MEM((void*)value->addr.off, &val, sizeof(val)))
 479         return 0;
 480   } else {
 481      val = *(unsigned int*)value->addr.off;
 482   }
 483
 484   *newtype = value->type->un.pointer.pointsto;
 485   addr.off = val;
 486   return DEBUG_ToLinear(&addr); /* FIXME: is this right (or "better") ? */
 487 }
 488
 489 unsigned int
 490 DEBUG_FindStructElement(DBG_VALUE* value, const char * ele_name, int * tmpbuf)
 491 {
 492   struct member * m;
 493   unsigned int    mask;
 494
 495   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 496
 497   /*
 498    * Make sure that this really makes sense.
 499    */
 500   if( value->type->type != DT_STRUCT )
 501     {
 502       value->type = NULL;
 503       return FALSE;
 504     }
 505
 506   for(m = value->type->un.structure.members; m; m = m->next)
 507     {
 508       if( strcmp(m->name, ele_name) == 0 )
 509         {
 510           value->type = m->type;
 511           if( (m->offset & 7) != 0 || (m->size & 7) != 0)
 512             {
 513               /*
 514                * Bitfield operation.  We have to extract the field and store
 515                * it in a temporary buffer so that we get it all right.
 516                */
 517               *tmpbuf = ((*(int* ) (value->addr.off + (m->offset >> 3))) >> (m->offset & 7));
 518               value->addr.off = (int) tmpbuf;
 519
 520               mask = 0xffffffff << (m->size);
 521               *tmpbuf &= ~mask;
 522               /*
 523                * OK, now we have the correct part of the number.
 524                * Check to see whether the basic type is signed or not, and if so,
 525                * we need to sign extend the number.
 526                */
 527               if( m->type->type == DT_BASIC && m->type->un.basic.b_signed != 0
 528                   && (*tmpbuf & (1 << (m->size - 1))) != 0 )
 529                 {
 530                   *tmpbuf |= mask;
 531                 }
 532             }
 533           else
 534             {
 535               value->addr.off += (m->offset >> 3);
 536             }
 537           return TRUE;
 538         }
 539     }
 540
 541   value->type = NULL;
 542   return FALSE;
 543 }
 544
 545 int
 546 DEBUG_SetStructSize(struct datatype * dt, int size)
 547 {
 548   assert(dt->type == DT_STRUCT);
 549
 550   if( dt->un.structure.members != NULL )
 551     {
 552       return FALSE;
 553     }
 554
 555   dt->un.structure.size = size;
 556   dt->un.structure.members = NULL;
 557
 558   return TRUE;
 559 }
 560
 561 int
 562 DEBUG_CopyFieldlist(struct datatype * dt, struct datatype * dt2)
 563 {
 564
 565   assert( dt->type == dt2->type && ((dt->type == DT_STRUCT) || (dt->type == DT_ENUM)));
 566
 567   if( dt->type == DT_STRUCT )
 568     {
 569       dt->un.structure.members = dt2->un.structure.members;
 570     }
 571   else
 572     {
 573       dt->un.enumeration.members = dt2->un.enumeration.members;
 574     }
 575
 576   return TRUE;
 577 }
 578
 579 int
 580 DEBUG_AddStructElement(struct datatype * dt, char * name, struct datatype * type,
 581                        int offset, int size)
 582 {
 583   struct member * m;
 584   struct member * last;
 585   struct en_values * e;
 586
 587   if( dt->type == DT_STRUCT )
 588     {
 589       for(last = dt->un.structure.members; last; last = last->next)
 590         {
 591           if(    (last->name[0] == name[0])
 592               && (strcmp(last->name, name) == 0) )
 593             {
 594               return TRUE;
 595             }
 596           if( last->next == NULL )
 597             {
 598               break;
 599             }
 600         }
 601       m = (struct member *) DBG_alloc(sizeof(struct member));
 602       if( m == FALSE )
 603         {
 604           return FALSE;
 605         }
 606
 607       m->name = DBG_strdup(name);
 608       m->type = type;
 609       m->offset = offset;
 610       m->size = size;
 611       if( last == NULL )
 612         {
 613           m->next = dt->un.structure.members;
 614           dt->un.structure.members = m;
 615         }
 616       else
 617         {
 618           last->next = m;
 619           m->next = NULL;
 620         }
 621       /*
 622        * If the base type is bitfield, then adjust the offsets here so that we
 623        * are able to look things up without lots of falter-all.
 624        */
 625       if( type && type->type == DT_BITFIELD )
 626         {
 627           m->offset += m->type->un.bitfield.bitoff;
 628           m->size = m->type->un.bitfield.nbits;
 629           m->type = m->type->un.bitfield.basetype;
 630         }
 631     }
 632   else if( dt->type == DT_ENUM )
 633     {
 634       e = (struct en_values *) DBG_alloc(sizeof(struct en_values));
 635       if( e == FALSE )
 636         {
 637           return FALSE;
 638         }
 639
 640       e->name = DBG_strdup(name);
 641       e->value = offset;
 642       e->next = dt->un.enumeration.members;
 643       dt->un.enumeration.members = e;
 644     }
 645   else
 646     {
 647       assert(FALSE);
 648     }
 649   return TRUE;
 650 }
 651
 652 struct datatype *
 653 DEBUG_GetPointerType(struct datatype * dt)
 654 {
 655   if( dt->type == DT_POINTER )
 656     {
 657       return dt->un.pointer.pointsto;
 658     }
 659
 660   return NULL;
 661 }
 662
 663 int
 664 DEBUG_SetPointerType(struct datatype * dt, struct datatype * dt2)
 665 {
 666   switch(dt->type)
 667     {
 668     case DT_POINTER:
 669       dt->un.pointer.pointsto = dt2;
 670       break;
 671     case DT_FUNC:
 672       dt->un.funct.rettype = dt2;
 673       break;
 674     default:
 675       assert(FALSE);
 676     }
 677
 678   return TRUE;
 679 }
 680
 681 int
 682 DEBUG_SetArrayParams(struct datatype * dt, int min, int max, struct datatype * dt2)
 683 {
 684   assert(dt->type == DT_ARRAY);
 685   dt->un.array.start = min;
 686   dt->un.array.end   = max;
 687   dt->un.array.basictype = dt2;
 688
 689   return TRUE;
 690 }
 691
 692 int
 693 DEBUG_SetBitfieldParams(struct datatype * dt, int offset, int nbits,
 694                         struct datatype * dt2)
 695 {
 696   assert(dt->type == DT_BITFIELD);
 697   dt->un.bitfield.bitoff   = offset;
 698   dt->un.bitfield.nbits    = nbits;
 699   dt->un.bitfield.basetype = dt2;
 700
 701   return TRUE;
 702 }
 703
 704 int DEBUG_GetObjectSize(struct datatype * dt)
 705 {
 706   if( dt == NULL )
 707     {
 708       return 0;
 709     }
 710
 711   switch(dt->type)
 712     {
 713     case DT_BASIC:
 714       return dt->un.basic.basic_size;
 715     case DT_POINTER:
 716       return sizeof(int *);
 717     case DT_STRUCT:
 718       return dt->un.structure.size;
 719     case DT_ENUM:
 720       return sizeof(int);
 721     case DT_ARRAY:
 722       return (dt->un.array.end - dt->un.array.start)
 723         * DEBUG_GetObjectSize(dt->un.array.basictype);
 724     case DT_BITFIELD:
 725       /*
 726        * Bitfields have to be handled seperately later on
 727        * when we insert the element into the structure.
 728        */
 729       return 0;
 730     case DT_TYPEDEF:
 731     case DT_FUNC:
 732     case DT_CONST:
 733       assert(FALSE);
 734     }
 735   return 0;
 736 }
 737
 738 unsigned int
 739 DEBUG_ArrayIndex(const DBG_VALUE * value, DBG_VALUE * result, int index)
 740 {
 741   int size;
 742
 743   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 744
 745   /*
 746    * Make sure that this really makes sense.
 747    */
 748   if( value->type->type == DT_POINTER )
 749     {
 750       /*
 751        * Get the base type, so we know how much to index by.
 752        */
 753       size = DEBUG_GetObjectSize(value->type->un.pointer.pointsto);
 754       result->type = value->type->un.pointer.pointsto;
 755       result->addr.off = (DWORD)DEBUG_ReadMemory(value) + size*index;
 756
 757       /* Contents of array must be on same target */
 758       result->cookie = value->cookie;
 759     }
 760   else if (value->type->type == DT_ARRAY)
 761     {
 762       size = DEBUG_GetObjectSize(value->type->un.array.basictype);
 763       result->type = value->type->un.array.basictype;
 764       result->addr.off = value->addr.off + size * (index - value->type->un.array.start);
 765
 766       /* Contents of array must be on same target */
 767       result->cookie = value->cookie;
 768     }
 769   else
 770     {
 771       assert(FALSE);
 772     }
 773
 774   return TRUE;
 775 }
 776
 777 /***********************************************************************
 778  *           DEBUG_Print
 779  *
 780  * Implementation of the 'print' command.
 781  */
 782 void
 783 DEBUG_Print( const DBG_VALUE *value, int count, char format, int level )
 784 {
 785   DBG_VALUE       val1;
 786   int             i;
 787   struct member * m;
 788   char          * pnt;
 789   int             size;
 790   int             xval;
 791
 792   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 793
 794   if (count != 1)
 795     {
 796       DEBUG_Printf( DBG_CHN_MESG, "Count other than 1 is meaningless in 'print' command\n" );
 797       return;
 798     }
 799
 800   if( value->type == NULL )
 801   {
 802       /* No type, just print the addr value */
 803       if (value->addr.seg && (value->addr.seg != 0xffffffff))
 804           DEBUG_nchar += DEBUG_Printf( DBG_CHN_MESG, "0x%04lx: ", value->addr.seg );
 805       DEBUG_nchar += DEBUG_Printf( DBG_CHN_MESG, "0x%08lx", value->addr.off );
 806       goto leave;
 807   }
 808
 809   if( level == 0 )
 810     {
 811       DEBUG_nchar = 0;
 812     }
 813
 814   if( DEBUG_nchar > DEBUG_maxchar )
 815     {
 816       DEBUG_Printf(DBG_CHN_MESG, "...");
 817       goto leave;
 818     }
 819
 820   if( format == 'i' || format == 's' || format == 'w' || format == 'b' )
 821     {
 822       DEBUG_Printf( DBG_CHN_MESG, "Format specifier '%c' is meaningless in 'print' command\n", format );
 823       format = '\0';
 824     }
 825
 826   switch(value->type->type)
 827     {
 828     case DT_BASIC:
 829     case DT_ENUM:
 830     case DT_CONST:
 831     case DT_POINTER:
 832       DEBUG_PrintBasic(value, 1, format);
 833       break;
 834     case DT_STRUCT:
 835       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "{");
 836       for(m = value->type->un.structure.members; m; m = m->next)
 837         {
 838           val1 = *value;
 839           DEBUG_FindStructElement(&val1, m->name, &xval);
 840           DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%s=", m->name);
 841           DEBUG_Print(&val1, 1, format, level + 1);
 842           if( m->next != NULL )
 843             {
 844               DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, ", ");
 845             }
 846           if( DEBUG_nchar > DEBUG_maxchar )
 847             {
 848               DEBUG_Printf(DBG_CHN_MESG, "...}");
 849               goto leave;
 850             }
 851         }
 852       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "}");
 853       break;
 854     case DT_ARRAY:
 855       /*
 856        * Loop over all of the entries, printing stuff as we go.
 857        */
 858       size = DEBUG_GetObjectSize(value->type->un.array.basictype);
 859       if( size == 1 )
 860         {
 861           /*
 862            * Special handling for character arrays.
 863            */
 864           pnt = (char *) value->addr.off;
 865           DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "\"");
 866           for( i=value->type->un.array.start; i < value->type->un.array.end; i++ )
 867             {
 868               DEBUG_Output(DBG_CHN_MESG, pnt++, 1);
 869               DEBUG_nchar++;
 870               if( DEBUG_nchar > DEBUG_maxchar )
 871                 {
 872                   DEBUG_Printf(DBG_CHN_MESG, "...\"");
 873                   goto leave;
 874                 }
 875             }
 876           DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "\"");
 877           break;
 878         }
 879       val1 = *value;
 880       val1.type = value->type->un.array.basictype;
 881       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "{");
 882       for( i=value->type->un.array.start; i <= value->type->un.array.end; i++ )
 883         {
 884           DEBUG_Print(&val1, 1, format, level + 1);
 885           val1.addr.off += size;
 886           if( i == value->type->un.array.end )
 887             {
 888               DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "}");
 889             }
 890           else
 891             {
 892               DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, ", ");
 893             }
 894           if( DEBUG_nchar > DEBUG_maxchar )
 895             {
 896               DEBUG_Printf(DBG_CHN_MESG, "...}");
 897               goto leave;
 898             }
 899         }
 900       break;
 901     case DT_FUNC:
 902       DEBUG_Printf(DBG_CHN_MESG, "Function at ???\n");
 903       break;
 904     default:
 905       DEBUG_Printf(DBG_CHN_MESG, "Unknown type (%d)\n", value->type->type);
 906       assert(FALSE);
 907       break;
 908     }
 909
 910 leave:
 911
 912   if( level == 0 )
 913     {
 914       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "\n");
 915     }
 916   return;
 917 }
 918
 919 int
 920 DEBUG_DumpTypes(void)
 921 {
 922   struct datatype * dt = NULL;
 923   struct member * m;
 924   int hash;
 925   int nm;
 926   char * name;
 927   char * member_name;
 928
 929   for(hash = 0; hash < NR_TYPE_HASH + 1; hash++)
 930     {
 931       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 932         {
 933           name =  "none";
 934           if( dt->name != NULL )
 935             {
 936               name = dt->name;
 937             }
 938           switch(dt->type)
 939             {
 940             case DT_BASIC:
 941               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - BASIC(%s)\n",
 942                            (unsigned long)dt, name);
 943               break;
 944             case DT_POINTER:
 945               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - POINTER(%s)(%08lx)\n",
 946                            (unsigned long)dt, name, (unsigned long)dt->un.pointer.pointsto);
 947               break;
 948             case DT_STRUCT:
 949               member_name = "none";
 950               nm = 0;
 951               if( dt->un.structure.members != NULL
 952                   && dt->un.structure.members->name != NULL )
 953                 {
 954                   member_name = dt->un.structure.members->name;
 955                   for( m = dt->un.structure.members; m; m = m->next)
 956                     {
 957                       nm++;
 958                     }
 959                 }
 960               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - STRUCT(%s) %d %d %s\n",
 961                            (unsigned long)dt, name, dt->un.structure.size, nm, member_name);
 962               break;
 963             case DT_ARRAY:
 964               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - ARRAY(%s)(%08lx)\n",
 965                            (unsigned long)dt, name, (unsigned long)dt->un.array.basictype);
 966               break;
 967             case DT_ENUM:
 968               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - ENUM(%s)\n",
 969                            (unsigned long)dt, name);
 970               break;
 971             case DT_BITFIELD:
 972               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - BITFIELD(%s)\n",
 973                            (unsigned long)dt, name);
 974               break;
 975             case DT_FUNC:
 976               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - FUNC(%s)(%08lx)\n",
 977                            (unsigned long)dt, name, (unsigned long)dt->un.funct.rettype);
 978               break;
 979             case DT_CONST:
 980             case DT_TYPEDEF:
 981               DEBUG_Printf(DBG_CHN_MESG, "What???\n");
 982               break;
 983             }
 984         }
 985     }
 986   return TRUE;
 987 }
 988
 989
 990 enum debug_type DEBUG_GetType(struct datatype * dt)
 991 {
 992   return dt->type;
 993 }
 994
 995 struct datatype *
 996 DEBUG_TypeCast(enum debug_type type, const char * name)
 997 {
 998   int                     hash;
 999   struct datatype       * rtn;
1000
1001   /*
1002    * The last bucket is special, and is used to hold typeless names.
1003    */
1004   if( name == NULL )
1005     {
1006       hash = NR_TYPE_HASH;
1007     }
1008   else
1009     {
1010       hash = type_hash(name);
1011     }
1012
1013   rtn = DEBUG_LookupDataType(type, hash, name);
1014
1015   return rtn;
1016
1017 }
1018
1019 int
1020 DEBUG_PrintTypeCast(const struct datatype * dt)
1021 {
1022   const char* name = "none";
1023
1024   if( dt->name != NULL )
1025     {
1026       name = dt->name;
1027     }
1028
1029   switch(dt->type)
1030     {
1031     case DT_BASIC:
1032       DEBUG_Printf(DBG_CHN_MESG, "%s", name);
1033       break;
1034     case DT_POINTER:
1035       DEBUG_PrintTypeCast(dt->un.pointer.pointsto);
1036       DEBUG_Printf(DBG_CHN_MESG, "*");
1037       break;
1038     case DT_STRUCT:
1039       DEBUG_Printf(DBG_CHN_MESG, "struct %s", name);
1040       break;
1041     case DT_ARRAY:
1042       DEBUG_Printf(DBG_CHN_MESG, "%s[]", name);
1043       break;
1044     case DT_ENUM:
1045       DEBUG_Printf(DBG_CHN_MESG, "enum %s", name);
1046       break;
1047     case DT_BITFIELD:
1048       DEBUG_Printf(DBG_CHN_MESG, "unsigned %s", name);
1049       break;
1050     case DT_FUNC:
1051       DEBUG_PrintTypeCast(dt->un.funct.rettype);
1052       DEBUG_Printf(DBG_CHN_MESG, "(*%s)()", name);
1053       break;
1054     case DT_CONST:
1055     case DT_TYPEDEF:
1056       DEBUG_Printf(DBG_CHN_MESG, "What???\n");
1057       break;
1058     }
1059
1060   return TRUE;
1061 }
1062
1063 int DEBUG_PrintType( const DBG_VALUE *value )
1064 {
1065    assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
1066
1067    if (!value->type)
1068    {
1069       DEBUG_Printf(DBG_CHN_MESG, "Unknown type\n");
1070       return FALSE;
1071    }
1072    if (!DEBUG_PrintTypeCast(value->type))
1073       return FALSE;
1074    DEBUG_Printf(DBG_CHN_MESG, "\n");
1075    return TRUE;
1076 }
1077