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