mono/metadata/debug-helpers.c

   1 /*
   2  * debug-helpers.c:
   3  *
   4  * Author:
   5  *      Mono Project (http://www.mono-project.com)
   6  *
   7  * Copyright (C) 2005-2008 Novell, Inc. (http://www.novell.com)
   8  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
   9  */
  10
  11 #include <string.h>
  12 #include "mono/metadata/tokentype.h"
  13 #include "mono/metadata/opcodes.h"
  14 #include "mono/metadata/metadata-internals.h"
  15 #include "mono/metadata/class-internals.h"
  16 #include "mono/metadata/object-internals.h"
  17 #include "mono/metadata/mono-endian.h"
  18 #include "mono/metadata/debug-helpers.h"
  19 #include "mono/metadata/tabledefs.h"
  20 #include "mono/metadata/appdomain.h"
  21
  22 struct MonoMethodDesc {
  23         char *name_space;
  24         char *klass;
  25         char *name;
  26         char *args;
  27         guint num_args;
  28         gboolean include_namespace, klass_glob, name_glob;
  29 };
  30
  31 #ifdef HAVE_ARRAY_ELEM_INIT
  32 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
  33 #define MSGSTRFIELD1(line) str##line
  34 static const struct msgstr_t {
  35 #define WRAPPER(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
  36 #include "wrapper-types.h"
  37 #undef WRAPPER
  38 } opstr = {
  39 #define WRAPPER(a,b) b,
  40 #include "wrapper-types.h"
  41 #undef WRAPPER
  42 };
  43 static const gint16 opidx [] = {
  44 #define WRAPPER(a,b) [MONO_WRAPPER_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
  45 #include "wrapper-types.h"
  46 #undef WRAPPER
  47 };
  48
  49 static const char*
  50 wrapper_type_to_str (guint32 wrapper_type)
  51 {
  52         g_assert (wrapper_type < MONO_WRAPPER_NUM);
  53
  54         return (const char*)&opstr + opidx [wrapper_type];
  55 }
  56
  57 #else
  58 #define WRAPPER(a,b) b,
  59 static const char* const
  60 wrapper_type_names [MONO_WRAPPER_NUM + 1] = {
  61 #include "wrapper-types.h"
  62         NULL
  63 };
  64
  65 static const char*
  66 wrapper_type_to_str (guint32 wrapper_type)
  67 {
  68         g_assert (wrapper_type < MONO_WRAPPER_NUM);
  69
  70         return wrapper_type_names [wrapper_type];
  71 }
  72
  73 #endif
  74
  75 static void
  76 append_class_name (GString *res, MonoClass *klass, gboolean include_namespace)
  77 {
  78         if (!klass) {
  79                 g_string_append (res, "Unknown");
  80                 return;
  81         }
  82         if (klass->nested_in) {
  83                 append_class_name (res, klass->nested_in, include_namespace);
  84                 g_string_append_c (res, '/');
  85         }
  86         if (include_namespace && *(klass->name_space)) {
  87                 g_string_append (res, klass->name_space);
  88                 g_string_append_c (res, '.');
  89         }
  90         g_string_append (res, klass->name);
  91 }
  92
  93 static MonoClass*
  94 find_system_class (const char *name)
  95 {
  96         if (!strcmp (name, "void"))
  97                 return mono_defaults.void_class;
  98         else if (!strcmp (name, "char")) return mono_defaults.char_class;
  99         else if (!strcmp (name, "bool")) return mono_defaults.boolean_class;
 100         else if (!strcmp (name, "byte")) return mono_defaults.byte_class;
 101         else if (!strcmp (name, "sbyte")) return mono_defaults.sbyte_class;
 102         else if (!strcmp (name, "uint16")) return mono_defaults.uint16_class;
 103         else if (!strcmp (name, "int16")) return mono_defaults.int16_class;
 104         else if (!strcmp (name, "uint")) return mono_defaults.uint32_class;
 105         else if (!strcmp (name, "int")) return mono_defaults.int32_class;
 106         else if (!strcmp (name, "ulong")) return mono_defaults.uint64_class;
 107         else if (!strcmp (name, "long")) return mono_defaults.int64_class;
 108         else if (!strcmp (name, "uintptr")) return mono_defaults.uint_class;
 109         else if (!strcmp (name, "intptr")) return mono_defaults.int_class;
 110         else if (!strcmp (name, "single")) return mono_defaults.single_class;
 111         else if (!strcmp (name, "double")) return mono_defaults.double_class;
 112         else if (!strcmp (name, "string")) return mono_defaults.string_class;
 113         else if (!strcmp (name, "object")) return mono_defaults.object_class;
 114         else
 115                 return NULL;
 116 }
 117
 118 void
 119 mono_type_get_desc (GString *res, MonoType *type, gboolean include_namespace)
 120 {
 121         int i;
 122
 123         switch (type->type) {
 124         case MONO_TYPE_VOID:
 125                 g_string_append (res, "void"); break;
 126         case MONO_TYPE_CHAR:
 127                 g_string_append (res, "char"); break;
 128         case MONO_TYPE_BOOLEAN:
 129                 g_string_append (res, "bool"); break;
 130         case MONO_TYPE_U1:
 131                 g_string_append (res, "byte"); break;
 132         case MONO_TYPE_I1:
 133                 g_string_append (res, "sbyte"); break;
 134         case MONO_TYPE_U2:
 135                 g_string_append (res, "uint16"); break;
 136         case MONO_TYPE_I2:
 137                 g_string_append (res, "int16"); break;
 138         case MONO_TYPE_U4:
 139                 g_string_append (res, "uint"); break;
 140         case MONO_TYPE_I4:
 141                 g_string_append (res, "int"); break;
 142         case MONO_TYPE_U8:
 143                 g_string_append (res, "ulong"); break;
 144         case MONO_TYPE_I8:
 145                 g_string_append (res, "long"); break;
 146         case MONO_TYPE_FNPTR: /* who cares for the exact signature? */
 147                 g_string_append (res, "*()"); break;
 148         case MONO_TYPE_U:
 149                 g_string_append (res, "uintptr"); break;
 150         case MONO_TYPE_I:
 151                 g_string_append (res, "intptr"); break;
 152         case MONO_TYPE_R4:
 153                 g_string_append (res, "single"); break;
 154         case MONO_TYPE_R8:
 155                 g_string_append (res, "double"); break;
 156         case MONO_TYPE_STRING:
 157                 g_string_append (res, "string"); break;
 158         case MONO_TYPE_OBJECT:
 159                 g_string_append (res, "object"); break;
 160         case MONO_TYPE_PTR:
 161                 mono_type_get_desc (res, type->data.type, include_namespace);
 162                 g_string_append_c (res, '*');
 163                 break;
 164         case MONO_TYPE_ARRAY:
 165                 mono_type_get_desc (res, &type->data.array->eklass->byval_arg, include_namespace);
 166                 g_string_append_c (res, '[');
 167                 for (i = 1; i < type->data.array->rank; ++i)
 168                         g_string_append_c (res, ',');
 169                 g_string_append_c (res, ']');
 170                 break;
 171         case MONO_TYPE_SZARRAY:
 172                 mono_type_get_desc (res, &type->data.klass->byval_arg, include_namespace);
 173                 g_string_append (res, "[]");
 174                 break;
 175         case MONO_TYPE_CLASS:
 176         case MONO_TYPE_VALUETYPE:
 177                 append_class_name (res, type->data.klass, include_namespace);
 178                 break;
 179         case MONO_TYPE_GENERICINST: {
 180                 MonoGenericContext *context;
 181
 182                 mono_type_get_desc (res, &type->data.generic_class->container_class->byval_arg, include_namespace);
 183                 g_string_append (res, "<");
 184                 context = &type->data.generic_class->context;
 185                 if (context->class_inst) {
 186                         for (i = 0; i < context->class_inst->type_argc; ++i) {
 187                                 if (i > 0)
 188                                         g_string_append (res, ", ");
 189                                 mono_type_get_desc (res, context->class_inst->type_argv [i], include_namespace);
 190                         }
 191                 }
 192                 if (context->method_inst) {
 193                         if (context->class_inst)
 194                                         g_string_append (res, "; ");
 195                         for (i = 0; i < context->method_inst->type_argc; ++i) {
 196                                 if (i > 0)
 197                                         g_string_append (res, ", ");
 198                                 mono_type_get_desc (res, context->method_inst->type_argv [i], include_namespace);
 199                         }
 200                 }
 201                 g_string_append (res, ">");
 202                 break;
 203         }
 204         case MONO_TYPE_VAR:
 205         case MONO_TYPE_MVAR:
 206                 if (type->data.generic_param) {
 207                         const char *name = mono_generic_param_name (type->data.generic_param);
 208                         if (name)
 209                                 g_string_append (res, name);
 210                         else
 211                                 g_string_append_printf (res, "%s%d", type->type == MONO_TYPE_VAR ? "!" : "!!", mono_generic_param_num (type->data.generic_param));
 212                 } else {
 213                         g_string_append (res, "<unknown>");
 214                 }
 215                 break;
 216         case MONO_TYPE_TYPEDBYREF:
 217                 g_string_append (res, "typedbyref");
 218                 break;
 219         default:
 220                 break;
 221         }
 222         if (type->byref)
 223                 g_string_append_c (res, '&');
 224 }
 225
 226 char*
 227 mono_type_full_name (MonoType *type)
 228 {
 229         GString *str;
 230
 231         str = g_string_new ("");
 232         mono_type_get_desc (str, type, TRUE);
 233         return g_string_free (str, FALSE);
 234 }
 235
 236 char*
 237 mono_signature_get_desc (MonoMethodSignature *sig, gboolean include_namespace)
 238 {
 239         int i;
 240         char *result;
 241         GString *res;
 242
 243         if (!sig)
 244                 return g_strdup ("<invalid signature>");
 245
 246         res = g_string_new ("");
 247
 248         for (i = 0; i < sig->param_count; ++i) {
 249                 if (i > 0)
 250                         g_string_append_c (res, ',');
 251                 mono_type_get_desc (res, sig->params [i], include_namespace);
 252         }
 253         result = res->str;
 254         g_string_free (res, FALSE);
 255         return result;
 256 }
 257
 258 char*
 259 mono_signature_full_name (MonoMethodSignature *sig)
 260 {
 261         int i;
 262         char *result;
 263         GString *res;
 264
 265         if (!sig)
 266                 return g_strdup ("<invalid signature>");
 267
 268         res = g_string_new ("");
 269
 270         mono_type_get_desc (res, sig->ret, TRUE);
 271         g_string_append_c (res, '(');
 272         for (i = 0; i < sig->param_count; ++i) {
 273                 if (i > 0)
 274                         g_string_append_c (res, ',');
 275                 mono_type_get_desc (res, sig->params [i], TRUE);
 276         }
 277         g_string_append_c (res, ')');
 278         result = res->str;
 279         g_string_free (res, FALSE);
 280         return result;
 281 }
 282
 283 static void
 284 ginst_get_desc (GString *str, MonoGenericInst *ginst)
 285 {
 286         int i;
 287
 288         for (i = 0; i < ginst->type_argc; ++i) {
 289                 if (i > 0)
 290                         g_string_append (str, ", ");
 291                 mono_type_get_desc (str, ginst->type_argv [i], TRUE);
 292         }
 293 }
 294
 295 char*
 296 mono_context_get_desc (MonoGenericContext *context)
 297 {
 298         GString *str;
 299         char *res;
 300
 301         str = g_string_new ("");
 302         g_string_append (str, "<");
 303
 304         if (context->class_inst)
 305                 ginst_get_desc (str, context->class_inst);
 306         if (context->method_inst) {
 307                 if (context->class_inst)
 308                         g_string_append (str, "; ");
 309                 ginst_get_desc (str, context->method_inst);
 310         }
 311
 312         g_string_append (str, ">");
 313         res = g_strdup (str->str);
 314         g_string_free (str, TRUE);
 315         return res;
 316 }
 317
 318 /**
 319  * mono_method_desc_new:
 320  * @name: the method name.
 321  * @include_namespace: whether the name includes a namespace or not.
 322  *
 323  * Creates a method description for @name, which conforms to the following
 324  * specification:
 325  *
 326  * [namespace.]classname:methodname[(args...)]
 327  *
 328  * in all the loaded assemblies.
 329  *
 330  * Both classname and methodname can contain '*' which matches anything.
 331  *
 332  * Returns: a parsed representation of the method description.
 333  */
 334 MonoMethodDesc*
 335 mono_method_desc_new (const char *name, gboolean include_namespace)
 336 {
 337         MonoMethodDesc *result;
 338         char *class_name, *class_nspace, *method_name, *use_args, *end;
 339         int use_namespace;
 340         int generic_delim_stack;
 341
 342         class_nspace = g_strdup (name);
 343         use_args = strchr (class_nspace, '(');
 344         if (use_args) {
 345                 /* Allow a ' ' between the method name and the signature */
 346                 if (use_args > class_nspace && use_args [-1] == ' ')
 347                         use_args [-1] = 0;
 348                 *use_args++ = 0;
 349                 end = strchr (use_args, ')');
 350                 if (!end) {
 351                         g_free (class_nspace);
 352                         return NULL;
 353                 }
 354                 *end = 0;
 355         }
 356         method_name = strrchr (class_nspace, ':');
 357         if (!method_name) {
 358                 g_free (class_nspace);
 359                 return NULL;
 360         }
 361         /* allow two :: to separate the method name */
 362         if (method_name != class_nspace && method_name [-1] == ':')
 363                 method_name [-1] = 0;
 364         *method_name++ = 0;
 365         class_name = strrchr (class_nspace, '.');
 366         if (class_name) {
 367                 *class_name++ = 0;
 368                 use_namespace = 1;
 369         } else {
 370                 class_name = class_nspace;
 371                 use_namespace = 0;
 372         }
 373         result = g_new0 (MonoMethodDesc, 1);
 374         result->include_namespace = include_namespace;
 375         result->name = method_name;
 376         result->klass = class_name;
 377         result->name_space = use_namespace? class_nspace: NULL;
 378         result->args = use_args? use_args: NULL;
 379         if (strstr (result->name, "*"))
 380                 result->name_glob = TRUE;
 381         if (strstr (result->klass, "*"))
 382                 result->klass_glob = TRUE;
 383         if (use_args) {
 384                 end = use_args;
 385                 if (*end)
 386                         result->num_args = 1;
 387                 generic_delim_stack = 0;
 388                 while (*end) {
 389                         if (*end == '<')
 390                                 generic_delim_stack++;
 391                         else if (*end == '>')
 392                                 generic_delim_stack--;
 393
 394                         if (*end == ',' && generic_delim_stack == 0)
 395                                 result->num_args++;
 396                         ++end;
 397                 }
 398         }
 399
 400         return result;
 401 }
 402
 403 MonoMethodDesc*
 404 mono_method_desc_from_method (MonoMethod *method)
 405 {
 406         MonoMethodDesc *result;
 407
 408         result = g_new0 (MonoMethodDesc, 1);
 409         result->include_namespace = TRUE;
 410         result->name = g_strdup (method->name);
 411         result->klass = g_strdup (method->klass->name);
 412         result->name_space = g_strdup (method->klass->name_space);
 413
 414         return result;
 415 }
 416
 417 /**
 418  * mono_method_desc_free:
 419  * @desc: method description to be released
 420  *
 421  * Releases the MonoMethodDesc object @desc.
 422  */
 423 void
 424 mono_method_desc_free (MonoMethodDesc *desc)
 425 {
 426         if (desc->name_space)
 427                 g_free (desc->name_space);
 428         else if (desc->klass)
 429                 g_free (desc->klass);
 430         g_free (desc);
 431 }
 432
 433 /**
 434  * mono_method_descr_match:
 435  * @desc: MonoMethoDescription
 436  * @method: MonoMethod to test
 437  *
 438  * Determines whether the specified @method matches the provided @desc description.
 439  *
 440  * namespace and class are supposed to match already if this function is used.
 441  * Returns: True if the method matches the description, false otherwise.
 442  */
 443 gboolean
 444 mono_method_desc_match (MonoMethodDesc *desc, MonoMethod *method)
 445 {
 446         char *sig;
 447         gboolean name_match;
 448
 449         name_match = strcmp (desc->name, method->name) == 0;
 450         if (!name_match)
 451                 return FALSE;
 452         if (!desc->args)
 453                 return TRUE;
 454         if (desc->num_args != mono_method_signature (method)->param_count)
 455                 return FALSE;
 456         sig = mono_signature_get_desc (mono_method_signature (method), desc->include_namespace);
 457         if (strcmp (sig, desc->args)) {
 458                 g_free (sig);
 459                 return FALSE;
 460         }
 461         g_free (sig);
 462         return TRUE;
 463 }
 464
 465 static const char *
 466 my_strrchr (const char *str, char ch, int *len)
 467 {
 468         int pos;
 469
 470         for (pos = (*len)-1; pos >= 0; pos--) {
 471                 if (str [pos] != ch)
 472                         continue;
 473
 474                 *len = pos;
 475                 return str + pos;
 476         }
 477
 478         return NULL;
 479 }
 480
 481 static gboolean
 482 match_class (MonoMethodDesc *desc, int pos, MonoClass *klass)
 483 {
 484         const char *p;
 485
 486         if (desc->klass_glob && !strcmp (desc->klass, "*"))
 487                 return TRUE;
 488 #ifndef _EGLIB_MAJOR
 489         if (desc->klass_glob && g_pattern_match_simple (desc->klass, klass->name))
 490                 return TRUE;
 491 #endif
 492         p = my_strrchr (desc->klass, '/', &pos);
 493         if (!p) {
 494                 if (strncmp (desc->klass, klass->name, pos))
 495                         return FALSE;
 496                 if (desc->name_space && strcmp (desc->name_space, klass->name_space))
 497                         return FALSE;
 498                 return TRUE;
 499         }
 500
 501         if (strcmp (p+1, klass->name))
 502                 return FALSE;
 503         if (!klass->nested_in)
 504                 return FALSE;
 505
 506         return match_class (desc, pos, klass->nested_in);
 507 }
 508
 509 gboolean
 510 mono_method_desc_full_match (MonoMethodDesc *desc, MonoMethod *method)
 511 {
 512         if (!desc->klass)
 513                 return FALSE;
 514         if (!match_class (desc, strlen (desc->klass), method->klass))
 515                 return FALSE;
 516
 517         return mono_method_desc_match (desc, method);
 518 }
 519
 520 MonoMethod*
 521 mono_method_desc_search_in_class (MonoMethodDesc *desc, MonoClass *klass)
 522 {
 523         MonoMethod* m;
 524         gpointer iter = NULL;
 525
 526         while ((m = mono_class_get_methods (klass, &iter)))
 527                 if (mono_method_desc_match (desc, m))
 528                         return m;
 529         return NULL;
 530 }
 531
 532 MonoMethod*
 533 mono_method_desc_search_in_image (MonoMethodDesc *desc, MonoImage *image)
 534 {
 535         MonoClass *klass;
 536         const MonoTableInfo *methods;
 537         MonoMethod *method;
 538         int i;
 539
 540         /* Handle short names for system classes */
 541         if (!desc->name_space && image == mono_defaults.corlib) {
 542                 klass = find_system_class (desc->klass);
 543                 if (klass)
 544                         return mono_method_desc_search_in_class (desc, klass);
 545         }
 546
 547         if (desc->name_space && desc->klass) {
 548                 klass = mono_class_try_load_from_name (image, desc->name_space, desc->klass);
 549                 if (!klass)
 550                         return NULL;
 551                 return mono_method_desc_search_in_class (desc, klass);
 552         }
 553
 554         /* FIXME: Is this call necessary?  We don't use its result. */
 555         mono_image_get_table_info (image, MONO_TABLE_TYPEDEF);
 556         methods = mono_image_get_table_info (image, MONO_TABLE_METHOD);
 557         for (i = 0; i < mono_table_info_get_rows (methods); ++i) {
 558                 MonoError error;
 559                 guint32 token = mono_metadata_decode_row_col (methods, i, MONO_METHOD_NAME);
 560                 const char *n = mono_metadata_string_heap (image, token);
 561
 562                 if (strcmp (n, desc->name))
 563                         continue;
 564                 method = mono_get_method_checked (image, MONO_TOKEN_METHOD_DEF | (i + 1), NULL, NULL, &error);
 565                 if (!method) {
 566                         mono_error_cleanup (&error);
 567                         continue;
 568                 }
 569                 if (mono_method_desc_full_match (desc, method))
 570                         return method;
 571         }
 572         return NULL;
 573 }
 574
 575 static const unsigned char*
 576 dis_one (GString *str, MonoDisHelper *dh, MonoMethod *method, const unsigned char *ip, const unsigned char *end)
 577 {
 578         MonoError error;
 579         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
 580         const MonoOpcode *opcode;
 581         guint32 label, token;
 582         gint32 sval;
 583         int i;
 584         char *tmp;
 585         const unsigned char* il_code;
 586
 587         if (!header) {
 588                 g_string_append_printf (str, "could not disassemble, bad header due to %s", mono_error_get_message (&error));
 589                 mono_error_cleanup (&error);
 590                 return end;
 591         }
 592         il_code = mono_method_header_get_code (header, NULL, NULL);
 593
 594         label = ip - il_code;
 595         if (dh->indenter) {
 596                 tmp = dh->indenter (dh, method, label);
 597                 g_string_append (str, tmp);
 598                 g_free (tmp);
 599         }
 600         if (dh->label_format)
 601                 g_string_append_printf (str, dh->label_format, label);
 602
 603         i = mono_opcode_value (&ip, end);
 604         ip++;
 605         opcode = &mono_opcodes [i];
 606         g_string_append_printf (str, "%-10s", mono_opcode_name (i));
 607
 608         switch (opcode->argument) {
 609         case MonoInlineNone:
 610                 break;
 611         case MonoInlineType:
 612         case MonoInlineField:
 613         case MonoInlineMethod:
 614         case MonoInlineTok:
 615         case MonoInlineSig:
 616                 token = read32 (ip);
 617                 if (dh->tokener) {
 618                         tmp = dh->tokener (dh, method, token);
 619                         g_string_append (str, tmp);
 620                         g_free (tmp);
 621                 } else {
 622                         g_string_append_printf (str, "0x%08x", token);
 623                 }
 624                 ip += 4;
 625                 break;
 626         case MonoInlineString: {
 627                 const char *blob;
 628                 char *s;
 629                 size_t len2;
 630                 char *blob2 = NULL;
 631
 632                 if (!image_is_dynamic (method->klass->image) && !method_is_dynamic (method)) {
 633                         token = read32 (ip);
 634                         blob = mono_metadata_user_string (method->klass->image, mono_metadata_token_index (token));
 635
 636                         len2 = mono_metadata_decode_blob_size (blob, &blob);
 637                         len2 >>= 1;
 638
 639 #ifdef NO_UNALIGNED_ACCESS
 640                         /* The blob might not be 2 byte aligned */
 641                         blob2 = g_malloc ((len2 * 2) + 1);
 642                         memcpy (blob2, blob, len2 * 2);
 643 #else
 644                         blob2 = (char*)blob;
 645 #endif
 646
 647 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
 648                         {
 649                                 guint16 *buf = g_new (guint16, len2 + 1);
 650                                 int i;
 651
 652                                 for (i = 0; i < len2; ++i)
 653                                         buf [i] = GUINT16_FROM_LE (((guint16*)blob2) [i]);
 654                                 s = g_utf16_to_utf8 (buf, len2, NULL, NULL, NULL);
 655                                 g_free (buf);
 656                         }
 657 #else
 658                                 s = g_utf16_to_utf8 ((gunichar2*)blob2, len2, NULL, NULL, NULL);
 659 #endif
 660
 661                         g_string_append_printf (str, "\"%s\"", s);
 662                         g_free (s);
 663                         if (blob != blob2)
 664                                 g_free (blob2);
 665                 }
 666                 ip += 4;
 667                 break;
 668         }
 669         case MonoInlineVar:
 670                 g_string_append_printf (str, "%d", read16 (ip));
 671                 ip += 2;
 672                 break;
 673         case MonoShortInlineVar:
 674                 g_string_append_printf (str, "%d", (*ip));
 675                 ip ++;
 676                 break;
 677         case MonoInlineBrTarget:
 678                 sval = read32 (ip);
 679                 ip += 4;
 680                 if (dh->label_target)
 681                         g_string_append_printf (str, dh->label_target, ip + sval - il_code);
 682                 else
 683                         g_string_append_printf (str, "%d", sval);
 684                 break;
 685         case MonoShortInlineBrTarget:
 686                 sval = *(const signed char*)ip;
 687                 ip ++;
 688                 if (dh->label_target)
 689                         g_string_append_printf (str, dh->label_target, ip + sval - il_code);
 690                 else
 691                         g_string_append_printf (str, "%d", sval);
 692                 break;
 693         case MonoInlineSwitch: {
 694                 const unsigned char *end;
 695                 sval = read32 (ip);
 696                 ip += 4;
 697                 end = ip + sval * 4;
 698                 g_string_append_c (str, '(');
 699                 for (i = 0; i < sval; ++i) {
 700                         if (i > 0)
 701                                 g_string_append (str, ", ");
 702                         label = read32 (ip);
 703                         if (dh->label_target)
 704                                 g_string_append_printf (str, dh->label_target, end + label - il_code);
 705                         else
 706                                 g_string_append_printf (str, "%d", label);
 707                         ip += 4;
 708                 }
 709                 g_string_append_c (str, ')');
 710                 break;
 711         }
 712         case MonoInlineR: {
 713                 double r;
 714                 readr8 (ip, &r);
 715                 g_string_append_printf (str, "%g", r);
 716                 ip += 8;
 717                 break;
 718         }
 719         case MonoShortInlineR: {
 720                 float r;
 721                 readr4 (ip, &r);
 722                 g_string_append_printf (str, "%g", r);
 723                 ip += 4;
 724                 break;
 725         }
 726         case MonoInlineI:
 727                 g_string_append_printf (str, "%d", (gint32)read32 (ip));
 728                 ip += 4;
 729                 break;
 730         case MonoShortInlineI:
 731                 g_string_append_printf (str, "%d", *(const signed char*)ip);
 732                 ip ++;
 733                 break;
 734         case MonoInlineI8:
 735                 ip += 8;
 736                 break;
 737         default:
 738                 g_assert_not_reached ();
 739         }
 740         if (dh->newline)
 741                 g_string_append (str, dh->newline);
 742
 743         mono_metadata_free_mh (header);
 744         return ip;
 745 }
 746
 747 static MonoDisHelper
 748 default_dh = {
 749         "\n",
 750         "IL_%04x: ", /* label_format */
 751         "IL_%04x", /* label_target */
 752         NULL, /* indenter */
 753         NULL, /* tokener */
 754         NULL  /* user data */
 755 };
 756
 757 char*
 758 mono_disasm_code_one (MonoDisHelper *dh, MonoMethod *method, const guchar *ip, const guchar **endp)
 759 {
 760         char *result;
 761         GString *res = g_string_new ("");
 762
 763         if (!dh)
 764                 dh = &default_dh;
 765         /* set ip + 2 as the end: this is just a debugging method */
 766         ip = dis_one (res, dh, method, ip, ip + 2);
 767         if (endp)
 768                 *endp = ip;
 769
 770         result = res->str;
 771         g_string_free (res, FALSE);
 772         return result;
 773 }
 774
 775 char*
 776 mono_disasm_code (MonoDisHelper *dh, MonoMethod *method, const guchar *ip, const guchar* end)
 777 {
 778         char *result;
 779         GString *res = g_string_new ("");
 780
 781         if (!dh)
 782                 dh = &default_dh;
 783         while (ip < end) {
 784                 ip = dis_one (res, dh, method, ip, end);
 785         }
 786
 787         result = res->str;
 788         g_string_free (res, FALSE);
 789         return result;
 790 }
 791
 792 /**
 793  * mono_field_full_name:
 794  * @field: field to retrieve information for
 795  *
 796  * Returns: the full name for the field, made up of the namespace, type name and the field name.
 797  */
 798 char *
 799 mono_field_full_name (MonoClassField *field)
 800 {
 801         char *res;
 802         const char *nspace = field->parent->name_space;
 803
 804         res = g_strdup_printf ("%s%s%s:%s", nspace, *nspace ? "." : "",
 805                                                    field->parent->name, mono_field_get_name (field));
 806
 807         return res;
 808 }
 809
 810 char *
 811 mono_method_get_name_full (MonoMethod *method, gboolean signature, gboolean ret, MonoTypeNameFormat format)
 812 {
 813         char *res;
 814         char wrapper [64];
 815         char *klass_desc;
 816         char *inst_desc = NULL;
 817
 818         if (format == MONO_TYPE_NAME_FORMAT_IL)
 819                 klass_desc = mono_type_full_name (&method->klass->byval_arg);
 820         else
 821                 klass_desc = mono_type_get_name_full (&method->klass->byval_arg, format);
 822
 823         if (method->is_inflated && ((MonoMethodInflated*)method)->context.method_inst) {
 824                 GString *str = g_string_new ("");
 825                 if (format == MONO_TYPE_NAME_FORMAT_IL)
 826                         g_string_append (str, "<");
 827                 else
 828                         g_string_append (str, "[");
 829                 ginst_get_desc (str, ((MonoMethodInflated*)method)->context.method_inst);
 830                 if (format == MONO_TYPE_NAME_FORMAT_IL)
 831                         g_string_append_c (str, '>');
 832                 else
 833                         g_string_append_c (str, ']');
 834
 835                 inst_desc = str->str;
 836                 g_string_free (str, FALSE);
 837         } else if (method->is_generic) {
 838                 MonoGenericContainer *container = mono_method_get_generic_container (method);
 839
 840                 GString *str = g_string_new ("");
 841                 if (format == MONO_TYPE_NAME_FORMAT_IL)
 842                         g_string_append (str, "<");
 843                 else
 844                         g_string_append (str, "[");
 845                 ginst_get_desc (str, container->context.method_inst);
 846                 if (format == MONO_TYPE_NAME_FORMAT_IL)
 847                         g_string_append_c (str, '>');
 848                 else
 849                         g_string_append_c (str, ']');
 850
 851                 inst_desc = str->str;
 852                 g_string_free (str, FALSE);
 853         }
 854
 855         if (method->wrapper_type != MONO_WRAPPER_NONE)
 856                 sprintf (wrapper, "(wrapper %s) ", wrapper_type_to_str (method->wrapper_type));
 857         else
 858                 strcpy (wrapper, "");
 859
 860         if (signature) {
 861                 char *tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
 862
 863                 if (method->wrapper_type != MONO_WRAPPER_NONE)
 864                         sprintf (wrapper, "(wrapper %s) ", wrapper_type_to_str (method->wrapper_type));
 865                 else
 866                         strcpy (wrapper, "");
 867                 if (ret) {
 868                         char *ret_str = mono_type_full_name (mono_method_signature (method)->ret);
 869                         res = g_strdup_printf ("%s%s %s:%s%s (%s)", wrapper, ret_str, klass_desc,
 870                                                                    method->name, inst_desc ? inst_desc : "", tmpsig);
 871                         g_free (ret_str);
 872                 } else {
 873                         res = g_strdup_printf ("%s%s:%s%s (%s)", wrapper, klass_desc,
 874                                                                    method->name, inst_desc ? inst_desc : "", tmpsig);
 875                 }
 876                 g_free (tmpsig);
 877         } else {
 878                 res = g_strdup_printf ("%s%s:%s%s", wrapper, klass_desc,
 879                                                            method->name, inst_desc ? inst_desc : "");
 880         }
 881
 882         g_free (klass_desc);
 883         g_free (inst_desc);
 884
 885         return res;
 886 }
 887
 888 char *
 889 mono_method_full_name (MonoMethod *method, gboolean signature)
 890 {
 891         return mono_method_get_name_full (method, signature, FALSE, MONO_TYPE_NAME_FORMAT_IL);
 892 }
 893
 894 char *
 895 mono_method_get_full_name (MonoMethod *method)
 896 {
 897         return mono_method_get_name_full (method, TRUE, TRUE, MONO_TYPE_NAME_FORMAT_IL);
 898 }
 899
 900 static const char*
 901 print_name_space (MonoClass *klass)
 902 {
 903         if (klass->nested_in) {
 904                 print_name_space (klass->nested_in);
 905                 g_print ("%s", klass->nested_in->name);
 906                 return "/";
 907         }
 908         if (klass->name_space [0]) {
 909                 g_print ("%s", klass->name_space);
 910                 return ".";
 911         }
 912         return "";
 913 }
 914
 915 /**
 916  * mono_object_describe:
 917  *
 918  * Prints to stdout a small description of the object @obj.
 919  * For use in a debugger.
 920  */
 921 void
 922 mono_object_describe (MonoObject *obj)
 923 {
 924         MonoError error;
 925         MonoClass* klass;
 926         const char* sep;
 927         if (!obj) {
 928                 g_print ("(null)\n");
 929                 return;
 930         }
 931         klass = mono_object_class (obj);
 932         if (klass == mono_defaults.string_class) {
 933                 char *utf8 = mono_string_to_utf8_checked ((MonoString*)obj, &error);
 934                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
 935                 if (utf8 && strlen (utf8) > 60) {
 936                         utf8 [57] = '.';
 937                         utf8 [58] = '.';
 938                         utf8 [59] = '.';
 939                         utf8 [60] = 0;
 940                 }
 941                 if (utf8) {
 942                         g_print ("String at %p, length: %d, '%s'\n", obj, mono_string_length ((MonoString*) obj), utf8);
 943                 } else {
 944                         g_print ("String at %p, length: %d, unable to decode UTF16\n", obj, mono_string_length ((MonoString*) obj));
 945                 }
 946                 g_free (utf8);
 947         } else if (klass->rank) {
 948                 MonoArray *array = (MonoArray*)obj;
 949                 sep = print_name_space (klass);
 950                 g_print ("%s%s", sep, klass->name);
 951                 g_print (" at %p, rank: %d, length: %d\n", obj, klass->rank, (int)mono_array_length (array));
 952         } else {
 953                 sep = print_name_space (klass);
 954                 g_print ("%s%s", sep, klass->name);
 955                 g_print (" object at %p (klass: %p)\n", obj, klass);
 956         }
 957
 958 }
 959
 960 static void
 961 print_field_value (const char *field_ptr, MonoClassField *field, int type_offset)
 962 {
 963         MonoType *type;
 964         g_print ("At %p (ofs: %2d) %s: ", field_ptr, field->offset + type_offset, mono_field_get_name (field));
 965         type = mono_type_get_underlying_type (field->type);
 966
 967         switch (type->type) {
 968         case MONO_TYPE_I:
 969         case MONO_TYPE_U:
 970         case MONO_TYPE_PTR:
 971         case MONO_TYPE_FNPTR:
 972                 g_print ("%p\n", *(const void**)field_ptr);
 973                 break;
 974         case MONO_TYPE_STRING:
 975         case MONO_TYPE_SZARRAY:
 976         case MONO_TYPE_CLASS:
 977         case MONO_TYPE_OBJECT:
 978         case MONO_TYPE_ARRAY:
 979                 mono_object_describe (*(MonoObject**)field_ptr);
 980                 break;
 981         case MONO_TYPE_GENERICINST:
 982                 if (!mono_type_generic_inst_is_valuetype (type)) {
 983                         mono_object_describe (*(MonoObject**)field_ptr);
 984                         break;
 985                 } else {
 986                         /* fall through */
 987                 }
 988         case MONO_TYPE_VALUETYPE: {
 989                 MonoClass *k = mono_class_from_mono_type (type);
 990                 g_print ("%s ValueType (type: %p) at %p\n", k->name, k, field_ptr);
 991                 break;
 992         }
 993         case MONO_TYPE_I1:
 994                 g_print ("%d\n", *(gint8*)field_ptr);
 995                 break;
 996         case MONO_TYPE_U1:
 997                 g_print ("%d\n", *(guint8*)field_ptr);
 998                 break;
 999         case MONO_TYPE_I2:
1000                 g_print ("%d\n", *(gint16*)field_ptr);
1001                 break;
1002         case MONO_TYPE_U2:
1003                 g_print ("%d\n", *(guint16*)field_ptr);
1004                 break;
1005         case MONO_TYPE_I4:
1006                 g_print ("%d\n", *(gint32*)field_ptr);
1007                 break;
1008         case MONO_TYPE_U4:
1009                 g_print ("%u\n", *(guint32*)field_ptr);
1010                 break;
1011         case MONO_TYPE_I8:
1012                 g_print ("%lld\n", (long long int)*(gint64*)field_ptr);
1013                 break;
1014         case MONO_TYPE_U8:
1015                 g_print ("%llu\n", (long long unsigned int)*(guint64*)field_ptr);
1016                 break;
1017         case MONO_TYPE_R4:
1018                 g_print ("%f\n", *(gfloat*)field_ptr);
1019                 break;
1020         case MONO_TYPE_R8:
1021                 g_print ("%f\n", *(gdouble*)field_ptr);
1022                 break;
1023         case MONO_TYPE_BOOLEAN:
1024                 g_print ("%s (%d)\n", *(guint8*)field_ptr? "True": "False", *(guint8*)field_ptr);
1025                 break;
1026         case MONO_TYPE_CHAR:
1027                 g_print ("'%c' (%d 0x%04x)\n", *(guint16*)field_ptr, *(guint16*)field_ptr, *(guint16*)field_ptr);
1028                 break;
1029         default:
1030                 g_assert_not_reached ();
1031                 break;
1032         }
1033 }
1034
1035 static void
1036 objval_describe (MonoClass *klass, const char *addr)
1037 {
1038         MonoClassField *field;
1039         MonoClass *p;
1040         const char *field_ptr;
1041         gssize type_offset = 0;
1042
1043         if (klass->valuetype)
1044                 type_offset = -sizeof (MonoObject);
1045
1046         for (p = klass; p != NULL; p = p->parent) {
1047                 gpointer iter = NULL;
1048                 int printed_header = FALSE;
1049                 while ((field = mono_class_get_fields (p, &iter))) {
1050                         if (field->type->attrs & (FIELD_ATTRIBUTE_STATIC | FIELD_ATTRIBUTE_HAS_FIELD_RVA))
1051                                 continue;
1052
1053                         if (p != klass && !printed_header) {
1054                                 const char *sep;
1055                                 g_print ("In class ");
1056                                 sep = print_name_space (p);
1057                                 g_print ("%s%s:\n", sep, p->name);
1058                                 printed_header = TRUE;
1059                         }
1060                         field_ptr = (const char*)addr + field->offset + type_offset;
1061
1062                         print_field_value (field_ptr, field, type_offset);
1063                 }
1064         }
1065 }
1066
1067 /**
1068  * mono_object_describe_fields:
1069  *
1070  * Prints to stdout a small description of each field of the object @obj.
1071  * For use in a debugger.
1072  */
1073 void
1074 mono_object_describe_fields (MonoObject *obj)
1075 {
1076         MonoClass *klass = mono_object_class (obj);
1077         objval_describe (klass, (char*)obj);
1078 }
1079
1080 /**
1081  * mono_value_describe_fields:
1082  *
1083  * Prints to stdout a small description of each field of the value type
1084  * stored at @addr of type @klass.
1085  * For use in a debugger.
1086  */
1087 void
1088 mono_value_describe_fields (MonoClass* klass, const char* addr)
1089 {
1090         objval_describe (klass, addr);
1091 }
1092
1093 /**
1094  * mono_class_describe_statics:
1095  *
1096  * Prints to stdout a small description of each static field of the type @klass
1097  * in the current application domain.
1098  * For use in a debugger.
1099  */
1100 void
1101 mono_class_describe_statics (MonoClass* klass)
1102 {
1103         MonoError error;
1104         MonoClassField *field;
1105         MonoClass *p;
1106         const char *field_ptr;
1107         MonoVTable *vtable = mono_class_vtable_full (mono_domain_get (), klass, &error);
1108         const char *addr;
1109
1110         if (!vtable || !is_ok (&error)) {
1111                 mono_error_cleanup (&error);
1112                 return;
1113         }
1114
1115         if (!(addr = (const char *)mono_vtable_get_static_field_data (vtable)))
1116                 return;
1117
1118         for (p = klass; p != NULL; p = p->parent) {
1119                 gpointer iter = NULL;
1120                 while ((field = mono_class_get_fields (p, &iter))) {
1121                         if (field->type->attrs & FIELD_ATTRIBUTE_LITERAL)
1122                                 continue;
1123                         if (!(field->type->attrs & (FIELD_ATTRIBUTE_STATIC | FIELD_ATTRIBUTE_HAS_FIELD_RVA)))
1124                                 continue;
1125
1126                         field_ptr = (const char*)addr + field->offset;
1127
1128                         print_field_value (field_ptr, field, 0);
1129                 }
1130         }
1131 }
1132
1133 /**
1134  * mono_print_method_code
1135  * @MonoMethod: a pointer to the method
1136  *
1137  * This method is used from a debugger to print the code of the method.
1138  *
1139  * This prints the IL code of the method in the standard output.
1140  */
1141 void
1142 mono_method_print_code (MonoMethod *method)
1143 {
1144         MonoError error;
1145         char *code;
1146         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
1147         if (!header) {
1148                 printf ("METHOD HEADER NOT FOUND DUE TO: %s\n", mono_error_get_message (&error));
1149                 mono_error_cleanup (&error);
1150                 return;
1151         }
1152         code = mono_disasm_code (0, method, header->code, header->code + header->code_size);
1153         printf ("CODE FOR %s:\n%s\n", mono_method_full_name (method, TRUE), code);
1154         g_free (code);
1155 }