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 built.
   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       /* float type has to be promoted as a double */
 384       if (value.type->un.basic.basic_type == BASIC_FLT) {
 385          float f;
 386          double d;
 387          memcpy(&f, &rtn, sizeof(f));
 388          d = (double)f;
 389          memcpy(&rtn, &d, sizeof(rtn));
 390       }
 391       if (value.type->un.basic.output_format != NULL) {
 392          def_format = value.type->un.basic.output_format;
 393       }
 394
 395       /*
 396        * Check for single character prints that are out of range.
 397        */
 398       if (   value.type->un.basic.basic_size == 1
 399           && strcmp(def_format, "'%c'") == 0
 400           && ((rtn < 0x20) || (rtn > 0x80))) {
 401          def_format = "%d";
 402       }
 403       break;
 404    case DT_POINTER:
 405       if (_value->cookie == DV_TARGET) {
 406          if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn2, sizeof(void*)))
 407             return 0;
 408       } else {
 409          rtn2 = *(unsigned int*)(value.addr.off);
 410       }
 411
 412       type2 = value.type->un.pointer.pointsto;
 413
 414       if (!type2) {
 415          def_format = "Internal symbol error: unable to access memory location 0x%08x";
 416          rtn = 0;
 417          break;
 418       }
 419
 420       if (type2->type == DT_BASIC && type2->un.basic.basic_size == 1) {
 421          if (_value->cookie == DV_TARGET) {
 422             char ch;
 423             def_format = "\"%S\"";
 424             /* FIXME: assuming little endian */
 425             if (!DEBUG_READ_MEM_VERBOSE((void*)rtn2, &ch, 1))
 426                return 0;
 427          } else {
 428             def_format = "\"%s\"";
 429          }
 430       } else {
 431          def_format = "0x%8.8x";
 432       }
 433       rtn = rtn2;
 434       break;
 435    case DT_ARRAY:
 436    case DT_STRUCT:
 437       assert(_value->cookie == DV_TARGET);
 438       if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn2, sizeof(rtn2)))
 439          return 0;
 440       rtn = rtn2;
 441       def_format = "0x%8.8x";
 442       break;
 443    case DT_ENUM:
 444       assert(_value->cookie == DV_TARGET);
 445       if (!DEBUG_READ_MEM_VERBOSE((void*)value.addr.off, &rtn2, sizeof(rtn2)))
 446          return 0;
 447       rtn = rtn2;
 448       def_format = "%d";
 449       for (e = value.type->un.enumeration.members; e; e = e->next) {
 450          if (e->value == rtn) {
 451             rtn = (int)e->name;
 452             def_format = "%s";
 453             break;
 454          }
 455       }
 456       break;
 457    default:
 458       rtn = 0;
 459       break;
 460    }
 461
 462
 463    if (format != NULL) {
 464       *format = def_format;
 465    }
 466    return rtn;
 467 }
 468
 469 unsigned int
 470 DEBUG_TypeDerefPointer(const DBG_VALUE *value, struct datatype ** newtype)
 471 {
 472   DBG_ADDR      addr = value->addr;
 473   unsigned int  val;
 474
 475   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 476
 477   *newtype = NULL;
 478
 479   /*
 480    * Make sure that this really makes sense.
 481    */
 482   if( value->type->type != DT_POINTER )
 483      return 0;
 484
 485   if (value->cookie == DV_TARGET) {
 486      if (!DEBUG_READ_MEM((void*)value->addr.off, &val, sizeof(val)))
 487         return 0;
 488   } else {
 489      val = *(unsigned int*)value->addr.off;
 490   }
 491
 492   *newtype = value->type->un.pointer.pointsto;
 493   addr.off = val;
 494   return DEBUG_ToLinear(&addr); /* FIXME: is this right (or "better") ? */
 495 }
 496
 497 unsigned int
 498 DEBUG_FindStructElement(DBG_VALUE* value, const char * ele_name, int * tmpbuf)
 499 {
 500   struct member * m;
 501   unsigned int    mask;
 502
 503   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 504
 505   /*
 506    * Make sure that this really makes sense.
 507    */
 508   if( value->type->type != DT_STRUCT )
 509     {
 510       value->type = NULL;
 511       return FALSE;
 512     }
 513
 514   for(m = value->type->un.structure.members; m; m = m->next)
 515     {
 516       if( strcmp(m->name, ele_name) == 0 )
 517         {
 518           value->type = m->type;
 519           if( (m->offset & 7) != 0 || (m->size & 7) != 0)
 520             {
 521               /*
 522                * Bitfield operation.  We have to extract the field and store
 523                * it in a temporary buffer so that we get it all right.
 524                */
 525               *tmpbuf = ((*(int* ) (value->addr.off + (m->offset >> 3))) >> (m->offset & 7));
 526               value->addr.off = (int) tmpbuf;
 527
 528               mask = 0xffffffff << (m->size);
 529               *tmpbuf &= ~mask;
 530               /*
 531                * OK, now we have the correct part of the number.
 532                * Check to see whether the basic type is signed or not, and if so,
 533                * we need to sign extend the number.
 534                */
 535               if( m->type->type == DT_BASIC && m->type->un.basic.b_signed != 0
 536                   && (*tmpbuf & (1 << (m->size - 1))) != 0 )
 537                 {
 538                   *tmpbuf |= mask;
 539                 }
 540             }
 541           else
 542             {
 543               value->addr.off += (m->offset >> 3);
 544             }
 545           return TRUE;
 546         }
 547     }
 548
 549   value->type = NULL;
 550   return FALSE;
 551 }
 552
 553 int
 554 DEBUG_SetStructSize(struct datatype * dt, int size)
 555 {
 556   assert(dt->type == DT_STRUCT);
 557
 558   if( dt->un.structure.members != NULL )
 559     {
 560       return FALSE;
 561     }
 562
 563   dt->un.structure.size = size;
 564   dt->un.structure.members = NULL;
 565
 566   return TRUE;
 567 }
 568
 569 int
 570 DEBUG_CopyFieldlist(struct datatype * dt, struct datatype * dt2)
 571 {
 572
 573   assert( dt->type == dt2->type && ((dt->type == DT_STRUCT) || (dt->type == DT_ENUM)));
 574
 575   if( dt->type == DT_STRUCT )
 576     {
 577       dt->un.structure.members = dt2->un.structure.members;
 578     }
 579   else
 580     {
 581       dt->un.enumeration.members = dt2->un.enumeration.members;
 582     }
 583
 584   return TRUE;
 585 }
 586
 587 int
 588 DEBUG_AddStructElement(struct datatype * dt, char * name, struct datatype * type,
 589                        int offset, int size)
 590 {
 591   struct member * m;
 592   struct member * last;
 593   struct en_values * e;
 594
 595   if( dt->type == DT_STRUCT )
 596     {
 597       for(last = dt->un.structure.members; last; last = last->next)
 598         {
 599           if(    (last->name[0] == name[0])
 600               && (strcmp(last->name, name) == 0) )
 601             {
 602               return TRUE;
 603             }
 604           if( last->next == NULL )
 605             {
 606               break;
 607             }
 608         }
 609       m = (struct member *) DBG_alloc(sizeof(struct member));
 610       if( m == FALSE )
 611         {
 612           return FALSE;
 613         }
 614
 615       m->name = DBG_strdup(name);
 616       m->type = type;
 617       m->offset = offset;
 618       m->size = size;
 619       if( last == NULL )
 620         {
 621           m->next = dt->un.structure.members;
 622           dt->un.structure.members = m;
 623         }
 624       else
 625         {
 626           last->next = m;
 627           m->next = NULL;
 628         }
 629       /*
 630        * If the base type is bitfield, then adjust the offsets here so that we
 631        * are able to look things up without lots of falter-all.
 632        */
 633       if( type && type->type == DT_BITFIELD )
 634         {
 635           m->offset += m->type->un.bitfield.bitoff;
 636           m->size = m->type->un.bitfield.nbits;
 637           m->type = m->type->un.bitfield.basetype;
 638         }
 639     }
 640   else if( dt->type == DT_ENUM )
 641     {
 642       e = (struct en_values *) DBG_alloc(sizeof(struct en_values));
 643       if( e == FALSE )
 644         {
 645           return FALSE;
 646         }
 647
 648       e->name = DBG_strdup(name);
 649       e->value = offset;
 650       e->next = dt->un.enumeration.members;
 651       dt->un.enumeration.members = e;
 652     }
 653   else
 654     {
 655       assert(FALSE);
 656     }
 657   return TRUE;
 658 }
 659
 660 struct datatype *
 661 DEBUG_GetPointerType(struct datatype * dt)
 662 {
 663   if( dt->type == DT_POINTER )
 664     {
 665       return dt->un.pointer.pointsto;
 666     }
 667
 668   return NULL;
 669 }
 670
 671 int
 672 DEBUG_SetPointerType(struct datatype * dt, struct datatype * dt2)
 673 {
 674   switch(dt->type)
 675     {
 676     case DT_POINTER:
 677       dt->un.pointer.pointsto = dt2;
 678       break;
 679     case DT_FUNC:
 680       dt->un.funct.rettype = dt2;
 681       break;
 682     default:
 683       assert(FALSE);
 684     }
 685
 686   return TRUE;
 687 }
 688
 689 int
 690 DEBUG_SetArrayParams(struct datatype * dt, int min, int max, struct datatype * dt2)
 691 {
 692   assert(dt->type == DT_ARRAY);
 693   dt->un.array.start = min;
 694   dt->un.array.end   = max;
 695   dt->un.array.basictype = dt2;
 696
 697   return TRUE;
 698 }
 699
 700 int
 701 DEBUG_SetBitfieldParams(struct datatype * dt, int offset, int nbits,
 702                         struct datatype * dt2)
 703 {
 704   assert(dt->type == DT_BITFIELD);
 705   dt->un.bitfield.bitoff   = offset;
 706   dt->un.bitfield.nbits    = nbits;
 707   dt->un.bitfield.basetype = dt2;
 708
 709   return TRUE;
 710 }
 711
 712 int DEBUG_GetObjectSize(struct datatype * dt)
 713 {
 714   if( dt == NULL )
 715     {
 716       return 0;
 717     }
 718
 719   switch(dt->type)
 720     {
 721     case DT_BASIC:
 722       return dt->un.basic.basic_size;
 723     case DT_POINTER:
 724       return sizeof(int *);
 725     case DT_STRUCT:
 726       return dt->un.structure.size;
 727     case DT_ENUM:
 728       return sizeof(int);
 729     case DT_ARRAY:
 730       return (dt->un.array.end - dt->un.array.start)
 731         * DEBUG_GetObjectSize(dt->un.array.basictype);
 732     case DT_BITFIELD:
 733       /*
 734        * Bitfields have to be handled separately later on
 735        * when we insert the element into the structure.
 736        */
 737       return 0;
 738     case DT_FUNC:
 739       assert(FALSE);
 740     default:
 741       DEBUG_Printf(DBG_CHN_ERR, "Unknown type???\n");
 742       break;
 743     }
 744   return 0;
 745 }
 746
 747 unsigned int
 748 DEBUG_ArrayIndex(const DBG_VALUE * value, DBG_VALUE * result, int index)
 749 {
 750   int size;
 751
 752   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 753
 754   /*
 755    * Make sure that this really makes sense.
 756    */
 757   if( value->type->type == DT_POINTER )
 758     {
 759       /*
 760        * Get the base type, so we know how much to index by.
 761        */
 762       size = DEBUG_GetObjectSize(value->type->un.pointer.pointsto);
 763       result->type = value->type->un.pointer.pointsto;
 764       result->addr.off = (DWORD)DEBUG_ReadMemory(value) + size*index;
 765
 766       /* Contents of array must be on same target */
 767       result->cookie = value->cookie;
 768     }
 769   else if (value->type->type == DT_ARRAY)
 770     {
 771       size = DEBUG_GetObjectSize(value->type->un.array.basictype);
 772       result->type = value->type->un.array.basictype;
 773       result->addr.off = value->addr.off + size * (index - value->type->un.array.start);
 774
 775       /* Contents of array must be on same target */
 776       result->cookie = value->cookie;
 777     }
 778   else
 779     {
 780       assert(FALSE);
 781     }
 782
 783   return TRUE;
 784 }
 785
 786 /***********************************************************************
 787  *           DEBUG_Print
 788  *
 789  * Implementation of the 'print' command.
 790  */
 791 void
 792 DEBUG_Print( const DBG_VALUE *value, int count, char format, int level )
 793 {
 794   DBG_VALUE       val1;
 795   int             i;
 796   struct member * m;
 797   char          * pnt;
 798   int             size;
 799   int             xval;
 800
 801   assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
 802
 803   if (count != 1)
 804     {
 805       DEBUG_Printf( DBG_CHN_MESG, "Count other than 1 is meaningless in 'print' command\n" );
 806       return;
 807     }
 808
 809   if( value->type == NULL )
 810   {
 811       /* No type, just print the addr value */
 812       if (value->addr.seg && (value->addr.seg != 0xffffffff))
 813           DEBUG_nchar += DEBUG_Printf( DBG_CHN_MESG, "0x%04lx: ", value->addr.seg );
 814       DEBUG_nchar += DEBUG_Printf( DBG_CHN_MESG, "0x%08lx", value->addr.off );
 815       goto leave;
 816   }
 817
 818   if( level == 0 )
 819     {
 820       DEBUG_nchar = 0;
 821     }
 822
 823   if( DEBUG_nchar > DEBUG_maxchar )
 824     {
 825       DEBUG_Printf(DBG_CHN_MESG, "...");
 826       goto leave;
 827     }
 828
 829   if( format == 'i' || format == 's' || format == 'w' || format == 'b' )
 830     {
 831       DEBUG_Printf( DBG_CHN_MESG, "Format specifier '%c' is meaningless in 'print' command\n", format );
 832       format = '\0';
 833     }
 834
 835   switch(value->type->type)
 836     {
 837     case DT_BASIC:
 838     case DT_ENUM:
 839     case DT_POINTER:
 840       DEBUG_PrintBasic(value, 1, format);
 841       break;
 842     case DT_STRUCT:
 843       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "{");
 844       for(m = value->type->un.structure.members; m; m = m->next)
 845         {
 846           val1 = *value;
 847           DEBUG_FindStructElement(&val1, m->name, &xval);
 848           DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%s=", m->name);
 849           DEBUG_Print(&val1, 1, format, level + 1);
 850           if( m->next != NULL )
 851             {
 852               DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, ", ");
 853             }
 854           if( DEBUG_nchar > DEBUG_maxchar )
 855             {
 856               DEBUG_Printf(DBG_CHN_MESG, "...}");
 857               goto leave;
 858             }
 859         }
 860       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "}");
 861       break;
 862     case DT_ARRAY:
 863       /*
 864        * Loop over all of the entries, printing stuff as we go.
 865        */
 866       size = DEBUG_GetObjectSize(value->type->un.array.basictype);
 867       if( size == 1 )
 868         {
 869           /*
 870            * Special handling for character arrays.
 871            */
 872           pnt = (char *) value->addr.off;
 873           DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "\"");
 874           for( i=value->type->un.array.start; i < value->type->un.array.end; i++ )
 875             {
 876               DEBUG_Output(DBG_CHN_MESG, pnt++, 1);
 877               DEBUG_nchar++;
 878               if( DEBUG_nchar > DEBUG_maxchar )
 879                 {
 880                   DEBUG_Printf(DBG_CHN_MESG, "...\"");
 881                   goto leave;
 882                 }
 883             }
 884           DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "\"");
 885           break;
 886         }
 887       val1 = *value;
 888       val1.type = value->type->un.array.basictype;
 889       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "{");
 890       for( i=value->type->un.array.start; i <= value->type->un.array.end; i++ )
 891         {
 892           DEBUG_Print(&val1, 1, format, level + 1);
 893           val1.addr.off += size;
 894           if( i == value->type->un.array.end )
 895             {
 896               DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "}");
 897             }
 898           else
 899             {
 900               DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, ", ");
 901             }
 902           if( DEBUG_nchar > DEBUG_maxchar )
 903             {
 904               DEBUG_Printf(DBG_CHN_MESG, "...}");
 905               goto leave;
 906             }
 907         }
 908       break;
 909     case DT_FUNC:
 910       DEBUG_Printf(DBG_CHN_MESG, "Function at ???\n");
 911       break;
 912     default:
 913       DEBUG_Printf(DBG_CHN_MESG, "Unknown type (%d)\n", value->type->type);
 914       assert(FALSE);
 915       break;
 916     }
 917
 918 leave:
 919
 920   if( level == 0 )
 921     {
 922       DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "\n");
 923     }
 924   return;
 925 }
 926
 927 int
 928 DEBUG_DumpTypes(void)
 929 {
 930   struct datatype * dt = NULL;
 931   struct member * m;
 932   int hash;
 933   int nm;
 934   char * name;
 935   char * member_name;
 936
 937   for(hash = 0; hash < NR_TYPE_HASH + 1; hash++)
 938     {
 939       for( dt = type_hash_table[hash]; dt; dt = dt->next )
 940         {
 941           name =  "none";
 942           if( dt->name != NULL )
 943             {
 944               name = dt->name;
 945             }
 946           switch(dt->type)
 947             {
 948             case DT_BASIC:
 949               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - BASIC(%s)\n",
 950                            (unsigned long)dt, name);
 951               break;
 952             case DT_POINTER:
 953               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - POINTER(%s)(%08lx)\n",
 954                            (unsigned long)dt, name, (unsigned long)dt->un.pointer.pointsto);
 955               break;
 956             case DT_STRUCT:
 957               member_name = "none";
 958               nm = 0;
 959               if( dt->un.structure.members != NULL
 960                   && dt->un.structure.members->name != NULL )
 961                 {
 962                   member_name = dt->un.structure.members->name;
 963                   for( m = dt->un.structure.members; m; m = m->next)
 964                     {
 965                       nm++;
 966                     }
 967                 }
 968               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - STRUCT(%s) %d %d %s\n",
 969                            (unsigned long)dt, name, dt->un.structure.size, nm, member_name);
 970               break;
 971             case DT_ARRAY:
 972               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - ARRAY(%s)(%08lx)\n",
 973                            (unsigned long)dt, name, (unsigned long)dt->un.array.basictype);
 974               break;
 975             case DT_ENUM:
 976               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - ENUM(%s)\n",
 977                            (unsigned long)dt, name);
 978               break;
 979             case DT_BITFIELD:
 980               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - BITFIELD(%s)\n",
 981                            (unsigned long)dt, name);
 982               break;
 983             case DT_FUNC:
 984               DEBUG_Printf(DBG_CHN_MESG, "0x%08lx - FUNC(%s)(%08lx)\n",
 985                            (unsigned long)dt, name, (unsigned long)dt->un.funct.rettype);
 986               break;
 987             default:
 988               DEBUG_Printf(DBG_CHN_ERR, "Unknown type???\n");
 989               break;
 990             }
 991         }
 992     }
 993   return TRUE;
 994 }
 995
 996
 997 enum debug_type DEBUG_GetType(struct datatype * dt)
 998 {
 999   return dt->type;
1000 }
1001
1002 struct datatype *
1003 DEBUG_TypeCast(enum debug_type type, const char * name)
1004 {
1005   int                     hash;
1006
1007   /*
1008    * The last bucket is special, and is used to hold typeless names.
1009    */
1010   if( name == NULL )
1011     {
1012       hash = NR_TYPE_HASH;
1013     }
1014   else
1015     {
1016       hash = type_hash(name);
1017     }
1018
1019   return DEBUG_LookupDataType(type, hash, name);
1020 }
1021
1022 int
1023 DEBUG_PrintTypeCast(const struct datatype * dt)
1024 {
1025   const char* name = "none";
1026
1027   if( dt->name != NULL )
1028     {
1029       name = dt->name;
1030     }
1031
1032   switch(dt->type)
1033     {
1034     case DT_BASIC:
1035       DEBUG_Printf(DBG_CHN_MESG, "%s", name);
1036       break;
1037     case DT_POINTER:
1038       DEBUG_PrintTypeCast(dt->un.pointer.pointsto);
1039       DEBUG_Printf(DBG_CHN_MESG, "*");
1040       break;
1041     case DT_STRUCT:
1042       DEBUG_Printf(DBG_CHN_MESG, "struct %s", name);
1043       break;
1044     case DT_ARRAY:
1045       DEBUG_Printf(DBG_CHN_MESG, "%s[]", name);
1046       break;
1047     case DT_ENUM:
1048       DEBUG_Printf(DBG_CHN_MESG, "enum %s", name);
1049       break;
1050     case DT_BITFIELD:
1051       DEBUG_Printf(DBG_CHN_MESG, "unsigned %s", name);
1052       break;
1053     case DT_FUNC:
1054       DEBUG_PrintTypeCast(dt->un.funct.rettype);
1055       DEBUG_Printf(DBG_CHN_MESG, "(*%s)()", name);
1056       break;
1057     default:
1058        DEBUG_Printf(DBG_CHN_ERR, "Unknown type???\n");
1059        break;
1060     }
1061
1062   return TRUE;
1063 }
1064
1065 int DEBUG_PrintType( const DBG_VALUE *value )
1066 {
1067    assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
1068
1069    if (!value->type)
1070    {
1071       DEBUG_Printf(DBG_CHN_MESG, "Unknown type\n");
1072       return FALSE;
1073    }
1074    if (!DEBUG_PrintTypeCast(value->type))
1075       return FALSE;
1076    DEBUG_Printf(DBG_CHN_MESG, "\n");
1077    return TRUE;
1078 }
1079