mono/mini/aot.c

   1 /*
   2  * aot.c: mono Ahead of Time compiler
   3  *
   4  * Author:
   5  *   Dietmar Maurer (dietmar@ximian.com)
   6  *
   7  * (C) 2002 Ximian, Inc.
   8  */
   9
  10 #include "config.h"
  11 #include <sys/types.h>
  12 #include <unistd.h>
  13 #include <fcntl.h>
  14 #include <string.h>
  15 #ifndef PLATFORM_WIN32
  16 #include <sys/mman.h>
  17 #else
  18 #include <windows.h>
  19 #endif
  20
  21 #include <limits.h>    /* for PAGESIZE */
  22 #ifndef PAGESIZE
  23 #define PAGESIZE 4096
  24 #endif
  25
  26 #include <mono/metadata/tabledefs.h>
  27 #include <mono/metadata/class.h>
  28 #include <mono/metadata/object.h>
  29 #include <mono/metadata/tokentype.h>
  30 #include <mono/metadata/appdomain.h>
  31 #include <mono/metadata/debug-helpers.h>
  32 #include <mono/metadata/assembly.h>
  33 #include <mono/metadata/marshal.h>
  34 #include <mono/os/gc_wrapper.h>
  35
  36 #include "mini.h"
  37
  38 #ifdef PLATFORM_WIN32
  39 #define SHARED_EXT ".dll"
  40 #else
  41 #define SHARED_EXT ".so"
  42 #endif
  43
  44 typedef struct MonoAotMethod {
  45         MonoJitInfo *info;
  46         MonoJumpInfo *patch_info;
  47 } MonoAotMethod;
  48
  49 typedef struct MonoAotModule {
  50         /* Optimization flags used to compile the module */
  51         guint32 opts;
  52         /* Maps MonoMethods to MonoAotMethodInfos */
  53         MonoGHashTable *methods;
  54         char **icall_table;
  55         MonoImage **image_table;
  56         guint32* methods_present_table;
  57 } MonoAotModule;
  58
  59 typedef struct MonoAotCompile {
  60         FILE *fp;
  61         GHashTable *ref_hash;
  62         GHashTable *icall_hash;
  63         GPtrArray *icall_table;
  64         GHashTable *image_hash;
  65         GPtrArray *image_table;
  66 } MonoAotCompile;
  67
  68 static MonoGHashTable *aot_modules;
  69
  70 static CRITICAL_SECTION aot_mutex;
  71
  72 static guint32 mono_aot_verbose = 0;
  73
  74 /*
  75  * Disabling this will make a copy of the loaded code and use the copy instead
  76  * of the original. This will place the caller and the callee close to each
  77  * other in memory, possibly improving cache behavior. Since the original
  78  * code is in copy-on-write memory, this will not increase the memory usage
  79  * of the runtime.
  80  */
  81 static gboolean use_loaded_code = FALSE;
  82
  83 /* For debugging */
  84 static gint32 mono_last_aot_method = -1;
  85
  86 static MonoClass *
  87 decode_class_info (MonoAotModule *module, gpointer *data)
  88 {
  89         MonoImage *image;
  90         MonoClass *klass;
  91
  92         image = module->image_table [(guint32)data [1]];
  93         g_assert (image);
  94
  95         if (data [0]) {
  96                 return mono_class_get (image, (guint32)data [0]);
  97         } else {
  98                 klass = decode_class_info (module, data [3]);
  99                 return mono_array_class_get (klass, (guint32)data [2]);
 100         }
 101
 102         return NULL;
 103 }
 104
 105 static void
 106 load_aot_module (MonoAssembly *assembly, gpointer user_data)
 107 {
 108         char *aot_name;
 109         MonoAotModule *info;
 110         gboolean usable = TRUE;
 111         char *saved_guid = NULL;
 112         char *aot_version = NULL;
 113         char *opt_flags = NULL;
 114
 115         aot_name = g_strdup_printf ("%s.so", assembly->image->name);
 116
 117         assembly->aot_module = g_module_open (aot_name, G_MODULE_BIND_LAZY);
 118
 119         if (!assembly->aot_module)
 120                 return;
 121
 122         g_module_symbol (assembly->aot_module, "mono_assembly_guid", (gpointer *) &saved_guid);
 123         g_module_symbol (assembly->aot_module, "mono_aot_version", (gpointer *) &aot_version);
 124         g_module_symbol (assembly->aot_module, "mono_aot_opt_flags", (gpointer *)&opt_flags);
 125
 126         if (!aot_version || strcmp (aot_version, MONO_AOT_FILE_VERSION)) {
 127                 if (mono_aot_verbose > 0)
 128                         printf ("AOT module %s has wrong file format version (expected %s got %s)\n", aot_name, MONO_AOT_FILE_VERSION, aot_version);
 129                 usable = FALSE;
 130         }
 131         else
 132                 if (!saved_guid || strcmp (assembly->image->guid, saved_guid)) {
 133                         if (mono_aot_verbose > 0)
 134                                 printf ("AOT module %s is out of date.\n", aot_name);
 135                         usable = FALSE;
 136                 }
 137
 138         if (!usable) {
 139                 g_free (aot_name);
 140                 g_module_close (assembly->aot_module);
 141                 assembly->aot_module = NULL;
 142                 return;
 143         }
 144
 145         /*
 146          * It seems that MonoGHashTables are in the GC heap, so structures
 147          * containing them must be in the GC heap as well :(
 148          */
 149 #ifdef HAVE_BOEHM_GC
 150         info = GC_MALLOC (sizeof (MonoAotModule));
 151 #else
 152         info = g_new0 (MonoAotModule, 1);
 153 #endif
 154         info->methods = mono_g_hash_table_new (NULL, NULL);
 155         sscanf (opt_flags, "%d", &info->opts);
 156
 157         /* Read image table */
 158         {
 159                 guint32 table_len, i;
 160                 char *table = NULL;
 161
 162                 g_module_symbol (assembly->aot_module, "mono_image_table", (gpointer *)&table);
 163                 g_assert (table);
 164
 165                 table_len = *(guint32*)table;
 166                 table += sizeof (guint32);
 167                 info->image_table = g_new0 (MonoImage*, table_len);
 168                 for (i = 0; i < table_len; ++i) {
 169                         info->image_table [i] = mono_image_loaded_by_guid (table);
 170                         if (!info->image_table [i]) {
 171                                 if (mono_aot_verbose > 0)
 172                                         printf ("AOT module %s is out of date.\n", aot_name);
 173                                 mono_g_hash_table_destroy (info->methods);
 174                                 g_free (info->image_table);
 175 #ifndef HAVE_BOEHM_GC
 176                                 g_free (info);
 177 #endif
 178                                 g_free (aot_name);
 179                                 g_module_close (assembly->aot_module);
 180                                 assembly->aot_module = NULL;
 181                                 return;
 182                         }
 183                         table += strlen (table) + 1;
 184                 }
 185         }
 186
 187         /* Read icall table */
 188         {
 189                 guint32 table_len, i;
 190                 char *table = NULL;
 191
 192                 g_module_symbol (assembly->aot_module, "mono_icall_table", (gpointer *)&table);
 193                 g_assert (table);
 194
 195                 table_len = *(guint32*)table;
 196                 table += sizeof (guint32);
 197                 info->icall_table = g_new0 (char*, table_len);
 198                 for (i = 0; i < table_len; ++i) {
 199                         info->icall_table [i] = table;
 200                         table += strlen (table) + 1;
 201                 }
 202         }
 203
 204         /* Read methods present table */
 205         g_module_symbol (assembly->aot_module, "mono_methods_present_table", (gpointer *)&info->methods_present_table);
 206         g_assert (info->methods_present_table);
 207
 208         EnterCriticalSection (&aot_mutex);
 209         mono_g_hash_table_insert (aot_modules, assembly, info);
 210         LeaveCriticalSection (&aot_mutex);
 211
 212         if (mono_aot_verbose > 0)
 213                 printf ("Loaded AOT Module for %s.\n", assembly->image->name);
 214 }
 215
 216 void
 217 mono_aot_init (void)
 218 {
 219         InitializeCriticalSection (&aot_mutex);
 220
 221         aot_modules = mono_g_hash_table_new (NULL, NULL);
 222
 223         mono_install_assembly_load_hook (load_aot_module, NULL);
 224
 225         if (getenv ("MONO_LASTAOT"))
 226                 mono_last_aot_method = atoi (getenv ("MONO_LASTAOT"));
 227 }
 228
 229 static MonoJitInfo *
 230 mono_aot_get_method_inner (MonoDomain *domain, MonoMethod *method)
 231 {
 232         MonoClass *klass = method->klass;
 233         MonoAssembly *ass = klass->image->assembly;
 234         MonoJumpInfo *patch_info = NULL;
 235         GModule *module = ass->aot_module;
 236         char method_label [256];
 237         char info_label [256];
 238         guint8 *code = NULL;
 239         gpointer *info;
 240         guint code_len, used_int_regs, used_strings;
 241         MonoAotModule *aot_module;
 242         MonoAotMethod *minfo;
 243         MonoJitInfo *jinfo;
 244         MonoMethodHeader *header = ((MonoMethodNormal*)method)->header;
 245         int i;
 246
 247         if (!module)
 248                 return NULL;
 249
 250         if (!method->token)
 251                 return NULL;
 252
 253         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
 254                 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
 255                 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
 256                 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
 257                 return NULL;
 258
 259         aot_module = (MonoAotModule*)mono_g_hash_table_lookup (aot_modules, ass);
 260
 261         g_assert (klass->inited);
 262
 263         minfo = mono_g_hash_table_lookup (aot_module->methods, method);
 264         if (minfo) {
 265                 /* Duplicate jinfo */
 266                 jinfo = mono_mempool_alloc0 (domain->mp, sizeof (MonoJitInfo));
 267                 memcpy (jinfo, minfo->info, sizeof (MonoJitInfo));
 268                 if (jinfo->clauses) {
 269                         jinfo->clauses =
 270                                 mono_mempool_alloc0 (domain->mp, sizeof (MonoJitExceptionInfo) * header->num_clauses);
 271                         memcpy (jinfo->clauses, minfo->info->clauses, sizeof (MonoJitExceptionInfo) * header->num_clauses);
 272                 }
 273
 274                 /* This method was already loaded in another appdomain */
 275                 if (aot_module->opts & MONO_OPT_SHARED)
 276                         /* Use the same method in the new appdomain */
 277                         ;
 278                 else if (!minfo->patch_info)
 279                         /* Use the same method in the new appdomain */
 280                         ;
 281                 else {
 282                         /* Create a copy of the original method and apply relocations */
 283
 284                         code = mono_mempool_alloc (domain->code_mp, minfo->info->code_size);
 285                         memcpy (code, minfo->info->code_start, minfo->info->code_size);
 286
 287                         if (mono_aot_verbose > 1)
 288                                 printf ("REUSE METHOD: %s %p - %p.\n", mono_method_full_name (method, TRUE), code, (char*)code + minfo->info->code_size);
 289
 290                         /* Do this outside the lock to avoid deadlocks */
 291                         LeaveCriticalSection (&aot_mutex);
 292                         mono_arch_patch_code (method, domain, code, minfo->patch_info, TRUE);
 293                         EnterCriticalSection (&aot_mutex);
 294
 295                         /* Relocate jinfo */
 296                         jinfo->code_start = code;
 297                         if (jinfo->clauses) {
 298                                 for (i = 0; i < header->num_clauses; ++i) {
 299                                         MonoJitExceptionInfo *ei = &jinfo->clauses [i];
 300                                         gint32 offset = code - (guint8*)minfo->info->code_start;
 301
 302                                         if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
 303                                                 ei->data.filter = (guint8*)ei->data.filter + offset;
 304                                         ei->try_start = (guint8*)ei->try_start + offset;
 305                                         ei->try_end = (guint8*)ei->try_end + offset;
 306                                         ei->handler_start = (guint8*)ei->handler_start + offset;
 307                                 }
 308                         }
 309                 }
 310
 311                 return jinfo;
 312         }
 313
 314         /* Do a fast check to see whenever the method exists */
 315         {
 316                 guint32 index = mono_metadata_token_index (method->token) - 1;
 317                 guint32 w;
 318                 w = aot_module->methods_present_table [index / 32];
 319                 if (! (w & (1 << (index % 32)))) {
 320                         if (mono_aot_verbose > 1)
 321                                 printf ("NOT FOUND: %s.\n", mono_method_full_name (method, TRUE));
 322                         return NULL;
 323                 }
 324         }
 325
 326         sprintf (method_label, "m_%x", mono_metadata_token_index (method->token));
 327
 328         if (!g_module_symbol (module, method_label, (gpointer *)&code))
 329                 return NULL;
 330
 331         sprintf (info_label, "%s_p", method_label);
 332
 333         if (!g_module_symbol (module, info_label, (gpointer *)&info))
 334                 return NULL;
 335
 336         if (mono_last_aot_method != -1) {
 337                 if (mono_jit_stats.methods_aot > mono_last_aot_method)
 338                                 return NULL;
 339                 else
 340                         if (mono_jit_stats.methods_aot == mono_last_aot_method)
 341                                 printf ("LAST AOT METHOD: %s.%s.%s.\n", klass->name_space, klass->name, method->name);
 342         }
 343
 344 #ifdef HAVE_BOEHM_GC
 345         minfo = GC_MALLOC (sizeof (MonoAotMethod));
 346 #else
 347         minfo = g_new0 (MonoAotMethod, 1);
 348 #endif
 349
 350         jinfo = mono_mempool_alloc0 (domain->mp, sizeof (MonoJitInfo));
 351
 352         code_len = GPOINTER_TO_UINT (*((gpointer **)info));
 353         info++;
 354         used_int_regs = GPOINTER_TO_UINT (*((gpointer **)info));
 355         info++;
 356
 357         if (!use_loaded_code) {
 358                 guint8 *code2;
 359                 code2 = mono_mempool_alloc (domain->code_mp, code_len);
 360                 memcpy (code2, code, code_len);
 361                 code = code2;
 362         }
 363
 364         if (mono_aot_verbose > 1)
 365                 printf ("FOUND AOT compiled code for %s %p - %p %p\n", mono_method_full_name (method, TRUE), code, code + code_len, info);
 366
 367         /* Exception table */
 368         if (header->num_clauses) {
 369                 jinfo->clauses =
 370                         mono_mempool_alloc0 (domain->mp, sizeof (MonoJitExceptionInfo) * header->num_clauses);
 371                 jinfo->num_clauses = header->num_clauses;
 372
 373                 jinfo->exvar_offset = GPOINTER_TO_UINT (*((gpointer**)info));
 374                 info ++;
 375
 376                 for (i = 0; i < header->num_clauses; ++i) {
 377                         MonoExceptionClause *ec = &header->clauses [i];
 378                         MonoJitExceptionInfo *ei = &jinfo->clauses [i];
 379
 380                         ei->flags = ec->flags;
 381                         if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
 382                                 ei->data.filter = code + GPOINTER_TO_UINT (*((gpointer**)info));
 383                         else
 384                                 ei->data.token = GPOINTER_TO_UINT (*((gpointer**)info));
 385                         info ++;
 386                         ei->try_start = code + GPOINTER_TO_UINT (*((gpointer**)info));
 387                         info ++;
 388                         ei->try_end = code + GPOINTER_TO_UINT (*((gpointer**)info));
 389                         info ++;
 390                         ei->handler_start = code + GPOINTER_TO_UINT (*((gpointer**)info));
 391                         info ++;
 392                 }
 393         }
 394
 395         if (aot_module->opts & MONO_OPT_SHARED) {
 396                 used_strings = GPOINTER_TO_UINT (*((gpointer **)info));
 397                 info++;
 398         }
 399         else
 400                 used_strings = 0;
 401
 402         for (i = 0; i < used_strings; i++) {
 403                 guint token =  GPOINTER_TO_UINT (*((gpointer **)info));
 404                 info++;
 405                 mono_ldstr (mono_root_domain, klass->image, mono_metadata_token_index (token));
 406         }
 407
 408         if (*info) {
 409                 MonoMemPool *mp;
 410                 MonoImage *image;
 411                 guint8 *page_start;
 412                 gpointer *table;
 413                 int pages;
 414                 int i, err;
 415                 guint32 last_offset, buf_len;
 416
 417                 if (aot_module->opts & MONO_OPT_SHARED)
 418                         mp = mono_mempool_new ();
 419                 else
 420                         mp = domain->mp;
 421
 422                 last_offset = 0;
 423                 while (*info) {
 424                         MonoJumpInfo *ji = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
 425                         gpointer *data;
 426
 427                         guint8 b1, b2;
 428
 429                         b1 = *(guint8*)info;
 430                         b2 = *((guint8*)info + 1);
 431
 432                         info = (gpointer*)((guint8*)info + 2);
 433
 434                         ji->type = b1 >> 2;
 435
 436                         if (((b1 & (1 + 2)) == 3) && (b2 == 255)) {
 437                                 ji->ip.i = GPOINTER_TO_UINT (*info);
 438                                 info ++;
 439                         }
 440                         else
 441                                 ji->ip.i = (((guint32)(b1 & (1 + 2))) << 8) + b2;
 442
 443                         ji->ip.i += last_offset;
 444                         last_offset = ji->ip.i;
 445                         //printf ("T: %d O: %d.\n", ji->type, ji->ip.i);
 446
 447                         data = *((gpointer **)info);
 448
 449                         switch (ji->type) {
 450                         case MONO_PATCH_INFO_CLASS:
 451                         case MONO_PATCH_INFO_IID:
 452                                 ji->data.klass = decode_class_info (aot_module, data);
 453                                 g_assert (ji->data.klass);
 454                                 mono_class_init (ji->data.klass);
 455                                 break;
 456                         case MONO_PATCH_INFO_VTABLE:
 457                         case MONO_PATCH_INFO_CLASS_INIT:
 458                                 ji->data.klass = decode_class_info (aot_module, data);
 459                                 g_assert (ji->data.klass);
 460                                 mono_class_init (ji->data.klass);
 461                                 break;
 462                         case MONO_PATCH_INFO_IMAGE:
 463                                 ji->data.image = aot_module->image_table [(guint32)data];
 464                                 g_assert (ji->data.image);
 465                                 break;
 466                         case MONO_PATCH_INFO_METHOD:
 467                         case MONO_PATCH_INFO_METHODCONST:
 468                         case MONO_PATCH_INFO_METHOD_JUMP: {
 469                                 guint32 image_index, token;
 470
 471                                 image_index = (guint32)data >> 24;
 472                                 token = MONO_TOKEN_METHOD_DEF | ((guint32)data & 0xffffff);
 473
 474                                 image = aot_module->image_table [image_index];
 475                                 ji->data.method = mono_get_method (image, token, NULL);
 476                                 g_assert (ji->data.method);
 477                                 mono_class_init (ji->data.method->klass);
 478
 479                                 break;
 480                         }
 481                         case MONO_PATCH_INFO_WRAPPER: {
 482                                 guint32 image_index, token;
 483                                 guint32 wrapper_type;
 484
 485                                 wrapper_type = (guint32)data[0];
 486                                 image_index = (guint32)data[1] >> 24;
 487                                 token = MONO_TOKEN_METHOD_DEF | ((guint32)data[1] & 0xffffff);
 488
 489                                 image = aot_module->image_table [image_index];
 490                                 ji->data.method = mono_get_method (image, token, NULL);
 491                                 g_assert (ji->data.method);
 492                                 mono_class_init (ji->data.method->klass);
 493
 494                                 g_assert (wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK);
 495                                 ji->type = MONO_PATCH_INFO_METHOD;
 496                                 ji->data.method = mono_marshal_get_remoting_invoke_with_check (ji->data.method);
 497                                 break;
 498                         }
 499                         case MONO_PATCH_INFO_FIELD:
 500                         case MONO_PATCH_INFO_SFLDA: {
 501                                 MonoClass *klass = decode_class_info (aot_module, data [1]);
 502                                 mono_class_init (klass);
 503                                 ji->data.field = mono_class_get_field (klass, (guint32)data [0]);
 504                                 break;
 505                         }
 506                         case MONO_PATCH_INFO_INTERNAL_METHOD:
 507                                 ji->data.name = aot_module->icall_table [(guint32)data];
 508                                 g_assert (ji->data.name);
 509                                 //printf ("A: %s.\n", ji->data.name);
 510                                 break;
 511                         case MONO_PATCH_INFO_SWITCH:
 512                                 ji->table_size = (int)data [0];
 513                                 table = g_new (gpointer, ji->table_size);
 514                                 ji->data.target = table;
 515                                 for (i = 0; i < ji->table_size; i++) {
 516                                         table [i] = data [i + 1];
 517                                 }
 518                                 break;
 519                         case MONO_PATCH_INFO_R4:
 520                         case MONO_PATCH_INFO_R8:
 521                                 ji->data.target = data;
 522                                 break;
 523                         case MONO_PATCH_INFO_LDSTR:
 524                         case MONO_PATCH_INFO_LDTOKEN:
 525                         case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
 526                                 image = aot_module->image_table [(int)data [0]];
 527                                 ji->data.token = mono_jump_info_token_new (mp, image, (int)data [1]);
 528                                 break;
 529                         case MONO_PATCH_INFO_EXC_NAME:
 530                                 ji->data.klass = decode_class_info (aot_module, data);
 531                                 g_assert (ji->data.klass);
 532                                 mono_class_init (ji->data.klass);
 533                                 ji->data.name = ji->data.klass->name;
 534                                 break;
 535                         case MONO_PATCH_INFO_METHOD_REL:
 536                                 ji->data.offset = (int)data [0];
 537                                 break;
 538                         default:
 539                                 g_warning ("unhandled type %d", ji->type);
 540                                 g_assert_not_reached ();
 541                         }
 542
 543                         info++;
 544                         ji->next = patch_info;
 545                         patch_info = ji;
 546                 }
 547
 548                 info = (gpointer)((guint8*)info + 4);
 549                 buf_len = *(guint32*)info;
 550                 info = (gpointer)((guint8*)info + 4);
 551                 mono_debug_add_aot_method (domain, method, code, (guint8*)info, buf_len);
 552
 553                 if (use_loaded_code) {
 554                 /* disable write protection */
 555 #ifndef PLATFORM_WIN32
 556                         page_start = (char *) (((int) (code)) & ~ (PAGESIZE - 1));
 557                         pages = (code + code_len - page_start + PAGESIZE - 1) / PAGESIZE;
 558                         err = mprotect (page_start, pages * PAGESIZE, PROT_READ | PROT_WRITE | PROT_EXEC);
 559                         g_assert (err == 0);
 560 #else
 561                         {
 562                                 DWORD oldp;
 563                                 g_assert (VirtualProtect (code, code_len, PAGE_EXECUTE_READWRITE, &oldp) != 0);
 564                         }
 565 #endif
 566                 }
 567
 568                 /* Do this outside the lock to avoid deadlocks */
 569                 LeaveCriticalSection (&aot_mutex);
 570                 mono_arch_patch_code (method, domain, code, patch_info, TRUE);
 571                 EnterCriticalSection (&aot_mutex);
 572
 573                 if (aot_module->opts & MONO_OPT_SHARED)
 574                         /* No need to cache patches */
 575                         mono_mempool_destroy (mp);
 576                 else
 577                         minfo->patch_info = patch_info;
 578         }
 579
 580         mono_jit_stats.methods_aot++;
 581
 582         {
 583                 jinfo->code_size = code_len;
 584                 jinfo->used_regs = used_int_regs;
 585                 jinfo->method = method;
 586                 jinfo->code_start = code;
 587                 jinfo->domain_neutral = (aot_module->opts & MONO_OPT_SHARED) != 0;
 588
 589                 minfo->info = jinfo;
 590                 mono_g_hash_table_insert (aot_module->methods, method, minfo);
 591
 592                 return jinfo;
 593         }
 594 }
 595
 596 MonoJitInfo*
 597 mono_aot_get_method (MonoDomain *domain, MonoMethod *method)
 598 {
 599         MonoJitInfo *info;
 600
 601         EnterCriticalSection (&aot_mutex);
 602         info = mono_aot_get_method_inner (domain, method);
 603         LeaveCriticalSection (&aot_mutex);
 604
 605         /* Do this outside the lock */
 606         if (info) {
 607                 mono_jit_info_table_add (domain, info);
 608                 return info;
 609         }
 610         else
 611                 return NULL;
 612 }
 613
 614 #if 0
 615 static void
 616 write_data_symbol (FILE *fp, const char *name, guint8 *buf, int size, int align)
 617 {
 618         int i;
 619
 620         fprintf (fp, ".globl %s\n", name);
 621         fprintf (fp, ".text 1 \n\t.align %d\n", align);
 622         fprintf (fp, "\t.type %s,@object\n", name);
 623         fprintf (fp, "\t.size %s,%d\n", name, size);
 624         fprintf (fp, "%s:\n", name);
 625         for (i = 0; i < size; i++) {
 626                 fprintf (fp, ".byte %d\n", buf [i]);
 627         }
 628
 629 }
 630 #endif
 631
 632 static void
 633 write_string_symbol (FILE *fp, const char *name, const char *value)
 634 {
 635         fprintf (fp, ".globl %s\n", name);
 636         fprintf (fp, ".text 1\n");
 637         fprintf (fp, "%s:\n", name);
 638         fprintf (fp, "\t.string \"%s\"\n", value);
 639 }
 640
 641 static guint32
 642 mono_get_field_token (MonoClassField *field)
 643 {
 644         MonoClass *klass = field->parent;
 645         int i;
 646
 647         for (i = 0; i < klass->field.count; ++i) {
 648                 if (field == &klass->fields [i])
 649                         return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
 650         }
 651
 652         g_assert_not_reached ();
 653         return 0;
 654 }
 655
 656 static guint32
 657 get_image_index (MonoAotCompile *cfg, MonoImage *image)
 658 {
 659         guint32 index;
 660
 661         index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
 662         if (index)
 663                 return index - 1;
 664         else {
 665                 index = g_hash_table_size (cfg->image_hash);
 666                 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
 667                 g_ptr_array_add (cfg->image_table, image);
 668                 return index;
 669         }
 670 }
 671
 672 static void
 673 emit_image_index (MonoAotCompile *cfg, MonoImage *image)
 674 {
 675         guint32 image_index;
 676
 677         image_index = get_image_index (cfg, image);
 678
 679         fprintf (cfg->fp, "\t.long %d\n", image_index);
 680 }
 681
 682 static char *
 683 cond_emit_klass_label (MonoAotCompile *cfg, MonoClass *klass)
 684 {
 685         char *l1, *el = NULL;
 686
 687         if ((l1 = g_hash_table_lookup (cfg->ref_hash, klass)))
 688                 return l1;
 689
 690         if (!klass->type_token) {
 691                 g_assert (klass->rank > 0);
 692                 el = cond_emit_klass_label (cfg, klass->element_class);
 693         }
 694
 695         fprintf (cfg->fp, "\t.align %d\n", sizeof (gpointer));
 696         l1 = g_strdup_printf ("klass_p_%08x_%p", klass->type_token, klass);
 697         fprintf (cfg->fp, "%s:\n", l1);
 698         fprintf (cfg->fp, "\t.long 0x%08x\n", klass->type_token);
 699         emit_image_index (cfg, klass->image);
 700
 701         if (el) {
 702                 fprintf (cfg->fp, "\t.long %d\n", klass->rank);
 703                 fprintf (cfg->fp, "\t.long %s\n", el);
 704         }
 705
 706         g_hash_table_insert (cfg->ref_hash, klass, l1);
 707
 708         return l1;
 709 }
 710
 711 static char *
 712 cond_emit_field_label (MonoAotCompile *cfg, MonoJumpInfo *patch_info)
 713 {
 714         MonoClassField *field = patch_info->data.field;
 715         char *l1, *l2;
 716         guint token;
 717
 718         if ((l1 = g_hash_table_lookup (cfg->ref_hash, field)))
 719                 return l1;
 720
 721         l2 = cond_emit_klass_label (cfg, field->parent);
 722         fprintf (cfg->fp, "\t.align %d\n", sizeof (gpointer));
 723         token = mono_get_field_token (field);
 724         g_assert (token);
 725         l1 = g_strdup_printf ("klass_p_%08x_%p", token, field);
 726         fprintf (cfg->fp, "%s:\n", l1);
 727         fprintf (cfg->fp, "\t.long 0x%08x\n", token);
 728         fprintf (cfg->fp, "\t.long %s\n", l2);
 729
 730         g_hash_table_insert (cfg->ref_hash, field, l1);
 731
 732         return l1;
 733 }
 734
 735 static gint
 736 compare_patches (gconstpointer a, gconstpointer b)
 737 {
 738         int i, j;
 739
 740         i = (*(MonoJumpInfo**)a)->ip.i;
 741         j = (*(MonoJumpInfo**)b)->ip.i;
 742
 743         if (i < j)
 744                 return -1;
 745         else
 746                 if (i > j)
 747                         return 1;
 748         else
 749                 return 0;
 750 }
 751
 752 static void
 753 emit_method (MonoAotCompile *acfg, MonoCompile *cfg)
 754 {
 755         MonoMethod *method;
 756         GList *l;
 757         FILE *tmpfp;
 758         int i, j, k, pindex;
 759         guint8 *code, *mname;
 760         int func_alignment = 16;
 761         GPtrArray *patches;
 762         MonoJumpInfo *patch_info;
 763         MonoMethodHeader *header;
 764
 765         tmpfp = acfg->fp;
 766         method = cfg->method;
 767         code = cfg->native_code;
 768         header = ((MonoMethodNormal*)method)->header;
 769
 770         fprintf (tmpfp, ".text 0\n");
 771         mname = g_strdup_printf ("m_%x", mono_metadata_token_index (method->token));
 772         fprintf (tmpfp, "\t.align %d\n", func_alignment);
 773         fprintf (tmpfp, ".globl %s\n", mname);
 774         fprintf (tmpfp, "\t.type %s,@function\n", mname);
 775         fprintf (tmpfp, "%s:\n", mname);
 776
 777         for (i = 0; i < cfg->code_len; i++)
 778                 fprintf (tmpfp, ".byte %d\n", (unsigned int) code [i]);
 779
 780         fprintf (tmpfp, ".text 1\n");
 781
 782         /* Sort relocations */
 783         patches = g_ptr_array_new ();
 784         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
 785                 g_ptr_array_add (patches, patch_info);
 786         g_ptr_array_sort (patches, compare_patches);
 787
 788         j = 0;
 789         for (pindex = 0; pindex < patches->len; ++pindex) {
 790                 patch_info = g_ptr_array_index (patches, pindex);
 791                 switch (patch_info->type) {
 792                 case MONO_PATCH_INFO_LABEL:
 793                 case MONO_PATCH_INFO_BB:
 794                         /* relative jumps are no problem, there is no need to handle then here */
 795                         break;
 796                 case MONO_PATCH_INFO_SWITCH: {
 797                         gpointer *table = (gpointer *)patch_info->data.target;
 798                         int k;
 799
 800                         fprintf (tmpfp, "\t.align %d\n", sizeof (gpointer));
 801                         fprintf (tmpfp, "%s_p_%d:\n", mname, j);
 802                         fprintf (tmpfp, "\t.long %d\n", patch_info->table_size);
 803
 804                         for (k = 0; k < patch_info->table_size; k++) {
 805                                 fprintf (tmpfp, "\t.long %d\n", (int)table [k]);
 806                         }
 807                         j++;
 808                         break;
 809                 }
 810                 case MONO_PATCH_INFO_INTERNAL_METHOD: {
 811                         guint32 icall_index;
 812
 813                         icall_index = (guint32)g_hash_table_lookup (acfg->icall_hash, patch_info->data.name);
 814                         if (!icall_index) {
 815                                 icall_index = g_hash_table_size (acfg->icall_hash) + 1;
 816                                 g_hash_table_insert (acfg->icall_hash, (gpointer)patch_info->data.name,
 817                                                                          GUINT_TO_POINTER (icall_index));
 818                                 g_ptr_array_add (acfg->icall_table, (gpointer)patch_info->data.name);
 819                         }
 820                         patch_info->data.name = g_strdup_printf ("%d", icall_index - 1);
 821                         j++;
 822                         break;
 823                 }
 824                 case MONO_PATCH_INFO_METHODCONST:
 825                 case MONO_PATCH_INFO_METHOD:
 826                 case MONO_PATCH_INFO_METHOD_JUMP: {
 827                         /*
 828                          * The majority of patches are for methods, so we emit
 829                          * them inline instead of defining a label for them to
 830                          * decrease the number of relocations.
 831                          */
 832                         guint32 image_index = get_image_index (acfg, patch_info->data.method->klass->image);
 833                         guint32 token = patch_info->data.method->token;
 834                         g_assert (image_index < 256);
 835                         g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
 836
 837                         patch_info->data.name =
 838                                 g_strdup_printf ("%d", (image_index << 24) + (mono_metadata_token_index (token)));
 839                         j++;
 840                         break;
 841                 }
 842                 case MONO_PATCH_INFO_WRAPPER: {
 843                         MonoMethod *m;
 844                         guint32 image_index;
 845                         guint32 token;
 846
 847                         m = mono_marshal_method_from_wrapper (patch_info->data.method);
 848                         image_index = get_image_index (acfg, m->klass->image);
 849                         token = m->token;
 850                         g_assert (image_index < 256);
 851                         g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
 852
 853                         fprintf (tmpfp, "\t.align %d\n", sizeof (gpointer));
 854                         fprintf (tmpfp, "%s_p_%d:\n", mname, j);
 855                         fprintf (tmpfp, "\t.long %d\n", patch_info->data.method->wrapper_type);
 856                         fprintf (tmpfp, "\t.long %d\n", (image_index << 24) + (mono_metadata_token_index (token)));
 857                         j++;
 858                         break;
 859                 }
 860                 case MONO_PATCH_INFO_FIELD:
 861                         patch_info->data.name = cond_emit_field_label (acfg, patch_info);
 862                         j++;
 863                         break;
 864                 case MONO_PATCH_INFO_CLASS:
 865                 case MONO_PATCH_INFO_IID:
 866                         patch_info->data.name = cond_emit_klass_label (acfg, patch_info->data.klass);
 867                         j++;
 868                         break;
 869                 case MONO_PATCH_INFO_IMAGE:
 870                         patch_info->data.name = g_strdup_printf ("%d", get_image_index (acfg, patch_info->data.image));
 871                         j++;
 872                         break;
 873                 case MONO_PATCH_INFO_EXC_NAME: {
 874                         MonoClass *ex_class;
 875
 876                         ex_class =
 877                                 mono_class_from_name (mono_defaults.exception_class->image,
 878                                                                           "System", patch_info->data.target);
 879                         g_assert (ex_class);
 880                         patch_info->data.name = cond_emit_klass_label (acfg, ex_class);
 881                         j++;
 882                         break;
 883                 }
 884                 case MONO_PATCH_INFO_R4:
 885                         fprintf (tmpfp, "\t.align 8\n");
 886                         fprintf (tmpfp, "%s_p_%d:\n", mname, j);
 887                         fprintf (tmpfp, "\t.long 0x%08x\n", *((guint32 *)patch_info->data.target));
 888                         j++;
 889                         break;
 890                 case MONO_PATCH_INFO_R8:
 891                         fprintf (tmpfp, "\t.align 8\n");
 892                         fprintf (tmpfp, "%s_p_%d:\n", mname, j);
 893                         fprintf (tmpfp, "\t.long 0x%08x\n", *((guint32 *)patch_info->data.target));
 894                         fprintf (tmpfp, "\t.long 0x%08x\n", *((guint32 *)patch_info->data.target + 1));
 895                         j++;
 896                         break;
 897                 case MONO_PATCH_INFO_METHOD_REL:
 898                         fprintf (tmpfp, "\t.align %d\n", sizeof (gpointer));
 899                         fprintf (tmpfp, "%s_p_%d:\n", mname, j);
 900                         fprintf (tmpfp, "\t.long 0x%08x\n", patch_info->data.offset);
 901                         j++;
 902                         break;
 903                 case MONO_PATCH_INFO_VTABLE:
 904                 case MONO_PATCH_INFO_CLASS_INIT:
 905                         patch_info->data.name = cond_emit_klass_label (acfg, patch_info->data.klass);
 906                         j++;
 907                         break;
 908                 case MONO_PATCH_INFO_SFLDA:
 909                         patch_info->data.name = cond_emit_field_label (acfg, patch_info);
 910                         j++;
 911                         break;
 912                 case MONO_PATCH_INFO_LDSTR:
 913                 case MONO_PATCH_INFO_LDTOKEN:
 914                 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
 915                         fprintf (tmpfp, "\t.align 8\n");
 916                         fprintf (tmpfp, "%s_p_%d:\n", mname, j);
 917                         fprintf (tmpfp, "\t.long 0x%08x\n", get_image_index (acfg, patch_info->data.token->image));
 918                         fprintf (tmpfp, "\t.long 0x%08x\n", patch_info->data.token->token);
 919                         j++;
 920                         break;
 921                 default:
 922                         g_warning ("unable to handle jump info %d", patch_info->type);
 923                         g_assert_not_reached ();
 924                 }
 925         }
 926
 927         fprintf (tmpfp, ".globl %s_p\n", mname);
 928         fprintf (tmpfp, "\t.align %d\n", sizeof (gpointer));
 929         fprintf (tmpfp, "%s_p:\n", mname);
 930
 931         fprintf (tmpfp, "\t.long %d\n", cfg->code_len);
 932         fprintf (tmpfp, "\t.long %d\n", cfg->used_int_regs);
 933
 934         /* Exception table */
 935         if (header->num_clauses) {
 936                 MonoJitInfo *jinfo = cfg->jit_info;
 937
 938                 fprintf (tmpfp, "\t.long %d\n", jinfo->exvar_offset);
 939
 940                 for (k = 0; k < header->num_clauses; ++k) {
 941                         MonoJitExceptionInfo *ei = &jinfo->clauses [k];
 942
 943                         if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)
 944                                 fprintf (tmpfp, "\t.long %d\n", (guint8*)ei->data.filter - code);
 945                         else
 946                                 /* fixme: tokens are not global */
 947                                 fprintf (tmpfp, "\t.long %d\n", ei->data.token);
 948
 949                         fprintf (tmpfp, "\t.long %d\n", (guint8*)ei->try_start - code);
 950                         fprintf (tmpfp, "\t.long %d\n", (guint8*)ei->try_end - code);
 951                         fprintf (tmpfp, "\t.long %d\n", (guint8*)ei->handler_start - code);
 952                 }
 953         }
 954
 955         /* String table */
 956         if (cfg->opt & MONO_OPT_SHARED) {
 957                 fprintf (tmpfp, "\t.long %d\n", g_list_length (cfg->ldstr_list));
 958                 for (l = cfg->ldstr_list; l; l = l->next) {
 959                         fprintf (tmpfp, "\t.long 0x%08lx\n", (long)l->data);
 960                 }
 961         }
 962         else
 963                 /* Used only in shared mode */
 964                 g_assert (!cfg->ldstr_list);
 965
 966         //printf ("M: %s (%s).\n", mono_method_full_name (method, TRUE), mname);
 967
 968         if (j) {
 969                 guint32 last_offset;
 970                 last_offset = 0;
 971
 972                 j = 0;
 973                 for (pindex = 0; pindex < patches->len; ++pindex) {
 974                         guint32 offset;
 975                         patch_info = g_ptr_array_index (patches, pindex);
 976
 977                         if ((patch_info->type == MONO_PATCH_INFO_LABEL) ||
 978                                 (patch_info->type == MONO_PATCH_INFO_BB))
 979                                 /* Nothing to do */
 980                                 continue;
 981
 982                         //printf ("T: %d O: %d.\n", patch_info->type, patch_info->ip.i);
 983                         offset = patch_info->ip.i - last_offset;
 984                         last_offset = patch_info->ip.i;
 985
 986                         /* Encode type+position compactly */
 987                         g_assert (patch_info->type < 64);
 988                         if (offset < 1024 - 1) {
 989                                 fprintf (tmpfp, "\t.byte %d\n", (patch_info->type << 2) + (offset >> 8));
 990                                 fprintf (tmpfp, "\t.byte %d\n", offset & ((1 << 8) - 1));
 991                         }
 992                         else {
 993                                 fprintf (tmpfp, "\t.byte %d\n", (patch_info->type << 2) + 3);
 994                                 fprintf (tmpfp, "\t.byte %d\n", 255);
 995                                 fprintf (tmpfp, "\t.long %d\n", offset);
 996                         }
 997
 998                         switch (patch_info->type) {
 999                         case MONO_PATCH_INFO_METHODCONST:
1000                         case MONO_PATCH_INFO_METHOD:
1001                         case MONO_PATCH_INFO_METHOD_JUMP:
1002                         case MONO_PATCH_INFO_CLASS:
1003                         case MONO_PATCH_INFO_IID:
1004                         case MONO_PATCH_INFO_FIELD:
1005                         case MONO_PATCH_INFO_INTERNAL_METHOD:
1006                         case MONO_PATCH_INFO_IMAGE:
1007                         case MONO_PATCH_INFO_VTABLE:
1008                         case MONO_PATCH_INFO_CLASS_INIT:
1009                         case MONO_PATCH_INFO_SFLDA:
1010                         case MONO_PATCH_INFO_EXC_NAME:
1011                                 fprintf (tmpfp, "\t.long %s\n", patch_info->data.name);
1012                                 j++;
1013                                 break;
1014                         case MONO_PATCH_INFO_SWITCH:
1015                         case MONO_PATCH_INFO_R4:
1016                         case MONO_PATCH_INFO_R8:
1017                         case MONO_PATCH_INFO_METHOD_REL:
1018                         case MONO_PATCH_INFO_LDSTR:
1019                         case MONO_PATCH_INFO_LDTOKEN:
1020                         case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
1021                         case MONO_PATCH_INFO_WRAPPER:
1022                                 fprintf (tmpfp, "\t.long %s_p_%d\n", mname, j);
1023                                 j++;
1024                                 break;
1025                         case MONO_PATCH_INFO_LABEL:
1026                         case MONO_PATCH_INFO_BB:
1027                                 break;
1028                         default:
1029                                 g_warning ("unable to handle jump info %d", patch_info->type);
1030                                 g_assert_not_reached ();
1031                         }
1032
1033                 }
1034         }
1035
1036         /*
1037          * 0 is PATCH_INFO_BB, which can't be in the file.
1038          */
1039         /* NULL terminated array */
1040         fprintf (tmpfp, "\t.long 0\n");
1041
1042         {
1043                 guint8 *buf;
1044                 guint32 buf_len;
1045
1046                 mono_debug_serialize_debug_info (cfg, &buf, &buf_len);
1047
1048                 fprintf (tmpfp, "\t.long %d\n", buf_len);
1049
1050                 for (i = 0; i < buf_len; ++i)
1051                         fprintf (tmpfp, ".byte %d\n", (unsigned int) buf [i]);
1052
1053                 if (buf_len > 0)
1054                         g_free (buf);
1055         }
1056
1057         /* fixme: save the rest of the required infos */
1058
1059         g_free (mname);
1060 }
1061
1062 int
1063 mono_compile_assembly (MonoAssembly *ass, guint32 opts)
1064 {
1065         MonoCompile *cfg;
1066         MonoImage *image = ass->image;
1067         MonoMethod *method;
1068         char *com, *tmpfname, *opts_str;
1069         FILE *tmpfp;
1070         int i;
1071         guint8 *symbol;
1072         int ccount = 0, mcount = 0, lmfcount = 0, abscount = 0, wrappercount = 0, ocount = 0;
1073         GHashTable *ref_hash;
1074         MonoAotCompile *acfg;
1075         gboolean *emitted;
1076
1077         printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
1078
1079         i = g_file_open_tmp ("mono_aot_XXXXXX", &tmpfname, NULL);
1080         tmpfp = fdopen (i, "w+");
1081         g_assert (tmpfp);
1082
1083         ref_hash = g_hash_table_new (NULL, NULL);
1084
1085         acfg = g_new0 (MonoAotCompile, 1);
1086         acfg->fp = tmpfp;
1087         acfg->ref_hash = ref_hash;
1088         acfg->icall_hash = g_hash_table_new (NULL, NULL);
1089         acfg->icall_table = g_ptr_array_new ();
1090         acfg->image_hash = g_hash_table_new (NULL, NULL);
1091         acfg->image_table = g_ptr_array_new ();
1092
1093         write_string_symbol (tmpfp, "mono_assembly_guid" , image->guid);
1094
1095         write_string_symbol (tmpfp, "mono_aot_version", MONO_AOT_FILE_VERSION);
1096
1097         opts_str = g_strdup_printf ("%d", opts);
1098         write_string_symbol (tmpfp, "mono_aot_opt_flags", opts_str);
1099         g_free (opts_str);
1100
1101         emitted = g_new0 (gboolean, image->tables [MONO_TABLE_METHOD].rows);
1102
1103         for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
1104                 MonoJumpInfo *patch_info;
1105                 gboolean skip;
1106                 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
1107                 method = mono_get_method (image, token, NULL);
1108
1109                 /* fixme: maybe we can also precompile wrapper methods */
1110                 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
1111                     (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
1112                     (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
1113                     (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
1114                         //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
1115                         continue;
1116                 }
1117
1118                 mcount++;
1119
1120                 /* fixme: we need to patch the IP for the LMF in that case */
1121                 if (method->save_lmf) {
1122                         //printf ("Skip (needs lmf):  %s\n", mono_method_full_name (method, TRUE));
1123                         lmfcount++;
1124                         continue;
1125                 }
1126
1127                 //printf ("START:           %s\n", mono_method_full_name (method, TRUE));
1128                 //mono_compile_method (method);
1129
1130                 cfg = mini_method_compile (method, opts, mono_root_domain, FALSE, 0);
1131                 g_assert (cfg);
1132
1133                 if (cfg->disable_aot) {
1134                         printf ("Skip (other): %s\n", mono_method_full_name (method, TRUE));
1135                         ocount++;
1136                         continue;
1137                 }
1138
1139                 skip = FALSE;
1140                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
1141                         if (patch_info->type == MONO_PATCH_INFO_ABS) {
1142                                 /* unable to handle this */
1143                                 //printf ("Skip (abs addr):   %s %d\n", mono_method_full_name (method, TRUE), patch_info->type);
1144                                 skip = TRUE;
1145                                 break;
1146                         }
1147                 }
1148
1149                 if (skip) {
1150                         abscount++;
1151                         continue;
1152                 }
1153
1154                 /* remoting-invoke-with-check wrappers are very common */
1155                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
1156                         if ((patch_info->type == MONO_PATCH_INFO_METHOD) &&
1157                                 ((patch_info->data.method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)))
1158                                 patch_info->type = MONO_PATCH_INFO_WRAPPER;
1159                 }
1160
1161                 skip = FALSE;
1162                 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
1163                         if ((patch_info->type == MONO_PATCH_INFO_METHOD ||
1164                              patch_info->type == MONO_PATCH_INFO_METHODCONST) &&
1165                             patch_info->data.method->wrapper_type) {
1166                                 /* unable to handle this */
1167                                 //printf ("Skip (wrapper call):   %s %d -> %s\n", mono_method_full_name (method, TRUE), patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
1168                                 skip = TRUE;
1169                                 break;
1170                         }
1171                 }
1172
1173                 if (skip) {
1174                         wrappercount++;
1175                         continue;
1176                 }
1177
1178                 //printf ("Compile:           %s\n", mono_method_full_name (method, TRUE));
1179
1180                 emitted [i] = TRUE;
1181                 emit_method (acfg, cfg);
1182
1183                 mono_destroy_compile (cfg);
1184
1185                 ccount++;
1186         }
1187
1188         /*
1189          * The icall and image tables are small but referenced in a lot of places.
1190          * So we emit them at once, and reference their elements by an index
1191          * instead of an assembly label to cut back on the number of relocations.
1192          */
1193
1194         /* Emit icall table */
1195
1196         symbol = g_strdup_printf ("mono_icall_table");
1197         fprintf (tmpfp, ".globl %s\n", symbol);
1198         fprintf (tmpfp, ".text 1 \n");
1199         fprintf (tmpfp, "\t.align 8\n");
1200         fprintf (tmpfp, "%s:\n", symbol);
1201         fprintf (tmpfp, ".long %d\n", acfg->icall_table->len);
1202         for (i = 0; i < acfg->icall_table->len; i++)
1203                 fprintf (tmpfp, ".string \"%s\"\n", (char*)g_ptr_array_index (acfg->icall_table, i));
1204
1205         /* Emit image table */
1206
1207         symbol = g_strdup_printf ("mono_image_table");
1208         fprintf (tmpfp, ".globl %s\n", symbol);
1209         fprintf (tmpfp, ".text 1 \n");
1210         fprintf (tmpfp, "\t.align 8\n");
1211         fprintf (tmpfp, "%s:\n", symbol);
1212         fprintf (tmpfp, ".long %d\n", acfg->image_table->len);
1213         for (i = 0; i < acfg->image_table->len; i++)
1214                 fprintf (tmpfp, ".string \"%s\"\n", ((MonoImage*)g_ptr_array_index (acfg->image_table, i))->guid);
1215
1216         /*
1217          * g_module_symbol takes a lot of time for failed lookups, so we emit
1218          * a table which contains one bit for each method. This bit specifies
1219          * whenever the method is emitted or not.
1220          */
1221
1222         symbol = g_strdup_printf ("mono_methods_present_table");
1223         fprintf (tmpfp, ".globl %s\n", symbol);
1224         fprintf (tmpfp, ".text 1 \n");
1225         fprintf (tmpfp, "\t.align 8\n");
1226         fprintf (tmpfp, "%s:\n", symbol);
1227         {
1228                 guint32 k, nrows;
1229                 guint32 w;
1230
1231                 nrows = image->tables [MONO_TABLE_METHOD].rows;
1232                 for (i = 0; i < nrows / 32 + 1; ++i) {
1233                         w = 0;
1234                         for (k = 0; k < 32; ++k) {
1235                                 if (emitted [(i * 32) + k])
1236                                         w += (1 << k);
1237                         }
1238                         //printf ("EMITTED [%d] = %d.\n", i, b);
1239                         fprintf (tmpfp, "\t.long %d\n", w);
1240                 }
1241         }
1242
1243         fclose (tmpfp);
1244
1245         com = g_strdup_printf ("as %s -o %s.o", tmpfname, tmpfname);
1246         printf ("Executing the native assembler: %s\n", com);
1247         system (com);
1248         g_free (com);
1249         com = g_strdup_printf ("ld -shared -o %s%s %s.o", image->name, SHARED_EXT, tmpfname);
1250         printf ("Executing the native linker: %s\n", com);
1251         system (com);
1252         g_free (com);
1253         com = g_strdup_printf ("%s.o", tmpfname);
1254         unlink (com);
1255         g_free (com);
1256         /*com = g_strdup_printf ("strip --strip-unneeded %s%s", image->name, SHARED_EXT);
1257         printf ("Stripping the binary: %s\n", com);
1258         system (com);
1259         g_free (com);*/
1260
1261         printf ("Compiled %d out of %d methods (%d%%)\n", ccount, mcount, mcount ? (ccount*100)/mcount : 100);
1262         printf ("%d methods contain absolute addresses (%d%%)\n", abscount, mcount ? (abscount*100)/mcount : 100);
1263         printf ("%d methods contain wrapper references (%d%%)\n", wrappercount, mcount ? (wrappercount*100)/mcount : 100);
1264         printf ("%d methods contain lmf pointers (%d%%)\n", lmfcount, mcount ? (lmfcount*100)/mcount : 100);
1265         printf ("%d methods have other problems (%d%%)\n", ocount, mcount ? (ocount*100)/mcount : 100);
1266         unlink (tmpfname);
1267
1268         return 0;
1269 }
1270
1271