mono/mini/interpreter/transform.c

   1 /*
   2  * transform CIL into different opcodes for more
   3  * efficient interpretation
   4  *
   5  * Written by Bernie Solomon (bernard@ugsolutions.com)
   6  * Copyright (c) 2004.
   7  */
   8
   9 #include <string.h>
  10 #include <mono/metadata/appdomain.h>
  11 #include <mono/metadata/debug-helpers.h>
  12 #include <mono/metadata/exception.h>
  13 #include <mono/metadata/mono-endian.h>
  14 #include <mono/metadata/marshal.h>
  15 #include <mono/metadata/profiler-private.h>
  16 #include <mono/metadata/tabledefs.h>
  17
  18 #include <mono/mini/mini.h>
  19
  20 #include "mintops.h"
  21 #include "interp.h"
  22
  23 // TODO: export from marshal.c
  24 MonoDelegate* mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn);
  25
  26 #define DEBUG 0
  27
  28 typedef struct
  29 {
  30         MonoClass *klass;
  31         unsigned char type;
  32         unsigned char flags;
  33 } StackInfo;
  34
  35 typedef struct
  36 {
  37         MonoMethod *method;
  38         MonoMethodHeader *header;
  39         RuntimeMethod *rtm;
  40         const unsigned char *il_code;
  41         const unsigned char *ip;
  42         const unsigned char *last_ip;
  43         const unsigned char *in_start;
  44         int code_size;
  45         int *in_offsets;
  46         int *forward_refs;
  47         StackInfo **stack_state;
  48         int *stack_height;
  49         int *vt_stack_size;
  50         unsigned char *is_bb_start;
  51         unsigned short *new_code;
  52         unsigned short *new_code_end;
  53         unsigned short *new_ip;
  54         unsigned short *last_new_ip;
  55         unsigned int max_code_size;
  56         StackInfo *stack;
  57         StackInfo *sp;
  58         unsigned int max_stack_height;
  59         unsigned int vt_sp;
  60         unsigned int max_vt_sp;
  61         int n_data_items;
  62         int max_data_items;
  63         void **data_items;
  64         GHashTable *data_hash;
  65 } TransformData;
  66
  67 #define MINT_TYPE_I1 0
  68 #define MINT_TYPE_U1 1
  69 #define MINT_TYPE_I2 2
  70 #define MINT_TYPE_U2 3
  71 #define MINT_TYPE_I4 4
  72 #define MINT_TYPE_I8 5
  73 #define MINT_TYPE_R4 6
  74 #define MINT_TYPE_R8 7
  75 #define MINT_TYPE_O  8
  76 #define MINT_TYPE_P  9
  77 #define MINT_TYPE_VT 10
  78
  79 #define STACK_TYPE_I4 0
  80 #define STACK_TYPE_I8 1
  81 #define STACK_TYPE_R8 2
  82 #define STACK_TYPE_O  3
  83 #define STACK_TYPE_VT 4
  84 #define STACK_TYPE_MP 5
  85 #define STACK_TYPE_F  6
  86
  87 static const char *stack_type_string [] = { "I4", "I8", "R8", "O ", "VT", "MP", "F " };
  88
  89 #if SIZEOF_VOID_P == 8
  90 #define STACK_TYPE_I STACK_TYPE_I8
  91 #else
  92 #define STACK_TYPE_I STACK_TYPE_I4
  93 #endif
  94
  95 static int stack_type [] = {
  96         STACK_TYPE_I4, /*I1*/
  97         STACK_TYPE_I4, /*U1*/
  98         STACK_TYPE_I4, /*I2*/
  99         STACK_TYPE_I4, /*U2*/
 100         STACK_TYPE_I4, /*I4*/
 101         STACK_TYPE_I8, /*I8*/
 102         STACK_TYPE_R8, /*R4*/
 103         STACK_TYPE_R8, /*R8*/
 104         STACK_TYPE_O,  /*O*/
 105         STACK_TYPE_MP, /*P*/
 106         STACK_TYPE_VT
 107 };
 108
 109 static void
 110 grow_code (TransformData *td)
 111 {
 112         unsigned int old_ip_offset = td->new_ip - td->new_code;
 113         unsigned int old_last_ip_offset = td->last_new_ip - td->new_code;
 114         g_assert (old_ip_offset <= td->max_code_size);
 115         td->new_code = g_realloc (td->new_code, (td->max_code_size *= 2) * sizeof (td->new_code [0]));
 116         td->new_code_end = td->new_code + td->max_code_size;
 117         td->new_ip = td->new_code + old_ip_offset;
 118         td->last_new_ip = td->new_code + old_last_ip_offset;
 119 }
 120
 121 #define ENSURE_CODE(td, n) \
 122         do { \
 123                 if ((td)->new_ip + (n) > (td)->new_code_end) \
 124                         grow_code (td); \
 125         } while (0)
 126
 127 #define ADD_CODE(td, n) \
 128         do { \
 129                 if ((td)->new_ip == (td)->new_code_end) \
 130                         grow_code (td); \
 131                 *(td)->new_ip++ = (n); \
 132         } while (0)
 133
 134 #define CHECK_STACK(td, n) \
 135         do { \
 136                 int stack_size = (td)->sp - (td)->stack; \
 137                 if (stack_size < (n)) \
 138                         g_warning ("%s.%s: not enough values (%d < %d) on stack at %04x", \
 139                                 (td)->method->klass->name, (td)->method->name, \
 140                                 stack_size, n, (td)->ip - (td)->il_code); \
 141         } while (0)
 142
 143 #define ENSURE_I4(td, sp_off) \
 144         do { \
 145                 if ((td)->sp [-sp_off].type == STACK_TYPE_I8) \
 146                         ADD_CODE(td, sp_off == 1 ? MINT_CONV_I4_I8 : MINT_CONV_I4_I8_SP); \
 147         } while (0)
 148
 149 static void
 150 handle_branch(TransformData *td, int short_op, int long_op, int offset)
 151 {
 152         int shorten_branch = 0;
 153         int target = td->ip + offset - td->il_code;
 154         if (target < 0 || target >= td->code_size)
 155                 g_assert_not_reached ();
 156         if (offset > 0 && td->stack_height [target] < 0) {
 157                 td->stack_height [target] = td->sp - td->stack;
 158                 if (td->stack_height [target] > 0)
 159                         td->stack_state [target] = g_memdup (td->stack, td->stack_height [target] * sizeof (td->stack [0]));
 160                 td->vt_stack_size [target] = td->vt_sp;
 161         }
 162         if (offset < 0) {
 163                 offset = td->in_offsets [target] - (td->new_ip - td->new_code);
 164                 if (offset >= -32768) {
 165                         shorten_branch = 1;
 166                 }
 167         } else {
 168                 int prev = td->forward_refs [target];
 169                 td->forward_refs [td->ip - td->il_code] = prev;
 170                 td->forward_refs [target] = td->ip - td->il_code;
 171                 offset = 0;
 172                 if (td->header->code_size <= 25000) /* FIX to be precise somehow? */
 173                         shorten_branch = 1;
 174         }
 175         if (shorten_branch) {
 176                 ADD_CODE(td, short_op);
 177                 ADD_CODE(td, offset);
 178         } else {
 179                 ADD_CODE(td, long_op);
 180                 ADD_CODE(td, * (unsigned short *)(&offset));
 181                 ADD_CODE(td, * ((unsigned short *)&offset + 1));
 182         }
 183 }
 184
 185 static void
 186 one_arg_branch(TransformData *td, int mint_op, int offset)
 187 {
 188         int type = td->sp [-1].type == STACK_TYPE_O || td->sp [-1].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-1].type;
 189         int long_op = mint_op + type - STACK_TYPE_I4;
 190         int short_op = long_op + MINT_BRFALSE_I4_S - MINT_BRFALSE_I4;
 191         CHECK_STACK(td, 1);
 192         --td->sp;
 193         handle_branch (td, short_op, long_op, offset);
 194 }
 195
 196 static void
 197 two_arg_branch(TransformData *td, int mint_op, int offset)
 198 {
 199         int type1 = td->sp [-1].type == STACK_TYPE_O || td->sp [-1].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-1].type;
 200         int type2 = td->sp [-2].type == STACK_TYPE_O || td->sp [-2].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-2].type;
 201         int long_op = mint_op + type1 - STACK_TYPE_I4;
 202         int short_op = long_op + MINT_BEQ_I4_S - MINT_BEQ_I4;
 203         CHECK_STACK(td, 2);
 204         if (type1 == STACK_TYPE_I4 && type2 == STACK_TYPE_I8) {
 205                 ADD_CODE(td, MINT_CONV_I8_I4);
 206                 td->in_offsets [td->ip - td->il_code]++;
 207         } else if (type1 == STACK_TYPE_I8 && type2 == STACK_TYPE_I4) {
 208                 ADD_CODE(td, MINT_CONV_I8_I4_SP);
 209                 td->in_offsets [td->ip - td->il_code]++;
 210         } else if (type1 != type2) {
 211                 g_warning("%s.%s: branch type mismatch %d %d",
 212                         td->method->klass->name, td->method->name,
 213                         td->sp [-1].type, td->sp [-2].type);
 214         }
 215         td->sp -= 2;
 216         handle_branch (td, short_op, long_op, offset);
 217 }
 218
 219 static void
 220 unary_arith_op(TransformData *td, int mint_op)
 221 {
 222         int op = mint_op + td->sp [-1].type - STACK_TYPE_I4;
 223         CHECK_STACK(td, 1);
 224         ADD_CODE(td, op);
 225 }
 226
 227 static void
 228 binary_arith_op(TransformData *td, int mint_op)
 229 {
 230         int type1 = td->sp [-2].type;
 231         int type2 = td->sp [-1].type;
 232         int op;
 233 #if SIZEOF_VOID_P == 8
 234         if ((type1 == STACK_TYPE_MP || type1 == STACK_TYPE_I8) && type2 == STACK_TYPE_I4) {
 235                 ADD_CODE(td, MINT_CONV_I8_I4);
 236                 type2 = STACK_TYPE_I8;
 237         }
 238         if (type1 == STACK_TYPE_I4 && (type2 == STACK_TYPE_MP || type2 == STACK_TYPE_I8)) {
 239                 ADD_CODE(td, MINT_CONV_I8_I4_SP);
 240                 type1 = STACK_TYPE_I8;
 241                 td->sp [-2].type = STACK_TYPE_I8;
 242         }
 243 #endif
 244         if (type1 == STACK_TYPE_MP)
 245                 type1 = STACK_TYPE_I;
 246         if (type2 == STACK_TYPE_MP)
 247                 type2 = STACK_TYPE_I;
 248         if (type1 != type2) {
 249                 g_warning("%s.%s: %04x arith type mismatch %s %d %d",
 250                         td->method->klass->name, td->method->name,
 251                         td->ip - td->il_code, mono_interp_opname[mint_op], type1, type2);
 252         }
 253         op = mint_op + type1 - STACK_TYPE_I4;
 254         CHECK_STACK(td, 2);
 255         ADD_CODE(td, op);
 256         --td->sp;
 257 }
 258
 259 static void
 260 binary_int_op(TransformData *td, int mint_op)
 261 {
 262         int op = mint_op + td->sp [-1].type - STACK_TYPE_I4;
 263         CHECK_STACK(td, 2);
 264         if (td->sp [-1].type != td->sp [-2].type)
 265                 g_warning("%s.%s: int type mismatch", td->method->klass->name, td->method->name);
 266         ADD_CODE(td, op);
 267         --td->sp;
 268 }
 269
 270 static void
 271 shift_op(TransformData *td, int mint_op)
 272 {
 273         int op = mint_op + td->sp [-2].type - STACK_TYPE_I4;
 274         CHECK_STACK(td, 2);
 275         if (td->sp [-1].type != STACK_TYPE_I4) {
 276                 g_warning("%s.%s: shift type mismatch %d",
 277                         td->method->klass->name, td->method->name,
 278                         td->sp [-2].type);
 279         }
 280         ADD_CODE(td, op);
 281         --td->sp;
 282 }
 283
 284 static int
 285 mint_type(MonoType *type)
 286 {
 287         if (type->byref)
 288                 return MINT_TYPE_P;
 289 enum_type:
 290         switch (type->type) {
 291         case MONO_TYPE_I1:
 292                 return MINT_TYPE_I1;
 293         case MONO_TYPE_U1:
 294         case MONO_TYPE_BOOLEAN:
 295                 return MINT_TYPE_U1;
 296         case MONO_TYPE_I2:
 297                 return MINT_TYPE_I2;
 298         case MONO_TYPE_U2:
 299         case MONO_TYPE_CHAR:
 300                 return MINT_TYPE_U2;
 301         case MONO_TYPE_I4:
 302         case MONO_TYPE_U4:
 303                 return MINT_TYPE_I4;
 304         case MONO_TYPE_I:
 305         case MONO_TYPE_U:
 306 #if SIZEOF_VOID_P == 4
 307                 return MINT_TYPE_I4;
 308 #else
 309                 return MINT_TYPE_I8;
 310 #endif
 311         case MONO_TYPE_PTR:
 312                 return MINT_TYPE_P;
 313         case MONO_TYPE_R4:
 314                 return MINT_TYPE_R4;
 315         case MONO_TYPE_I8:
 316         case MONO_TYPE_U8:
 317                 return MINT_TYPE_I8;
 318         case MONO_TYPE_R8:
 319                 return MINT_TYPE_R8;
 320         case MONO_TYPE_STRING:
 321         case MONO_TYPE_SZARRAY:
 322         case MONO_TYPE_CLASS:
 323         case MONO_TYPE_OBJECT:
 324         case MONO_TYPE_ARRAY:
 325                 return MINT_TYPE_O;
 326         case MONO_TYPE_VALUETYPE:
 327                 if (type->data.klass->enumtype) {
 328                         type = mono_class_enum_basetype (type->data.klass);
 329                         goto enum_type;
 330                 } else
 331                         return MINT_TYPE_VT;
 332         case MONO_TYPE_GENERICINST:
 333                 type = &type->data.generic_class->container_class->byval_arg;
 334                 goto enum_type;
 335         default:
 336                 g_warning ("got type 0x%02x", type->type);
 337                 g_assert_not_reached ();
 338         }
 339         return -1;
 340 }
 341
 342 static int
 343 can_store (int stack_type, int var_type)
 344 {
 345         if (stack_type == STACK_TYPE_O || stack_type == STACK_TYPE_MP)
 346                 stack_type = STACK_TYPE_I;
 347         if (var_type == STACK_TYPE_O || var_type == STACK_TYPE_MP)
 348                 var_type = STACK_TYPE_I;
 349         return stack_type == var_type;
 350 }
 351
 352 #define SET_SIMPLE_TYPE(s, ty) \
 353         do { \
 354                 (s)->type = (ty); \
 355                 (s)->flags = 0; \
 356                 (s)->klass = NULL; \
 357         } while (0)
 358
 359 #define SET_TYPE(s, ty, k) \
 360         do { \
 361                 (s)->type = (ty); \
 362                 (s)->flags = 0; \
 363                 (s)->klass = k; \
 364         } while (0)
 365
 366 #define PUSH_SIMPLE_TYPE(td, ty) \
 367         do { \
 368                 int sp_height; \
 369                 (td)->sp++; \
 370                 sp_height = (td)->sp - (td)->stack; \
 371                 if (sp_height > (td)->max_stack_height) \
 372                         (td)->max_stack_height = sp_height; \
 373                 SET_SIMPLE_TYPE((td)->sp - 1, ty); \
 374         } while (0)
 375
 376 #define PUSH_TYPE(td, ty, k) \
 377         do { \
 378                 int sp_height; \
 379                 (td)->sp++; \
 380                 sp_height = (td)->sp - (td)->stack; \
 381                 if (sp_height > (td)->max_stack_height) \
 382                         (td)->max_stack_height = sp_height; \
 383                 SET_TYPE((td)->sp - 1, ty, k); \
 384         } while (0)
 385
 386 #define PUSH_VT(td, size) \
 387         do { \
 388                 (td)->vt_sp += ((size) + 7) & ~7; \
 389                 if ((td)->vt_sp > (td)->max_vt_sp) \
 390                         (td)->max_vt_sp = (td)->vt_sp; \
 391         } while (0)
 392
 393 #define POP_VT(td, size) \
 394         do { \
 395                 (td)->vt_sp -= ((size) + 7) & ~7; \
 396         } while (0)
 397
 398 #if NO_UNALIGNED_ACCESS
 399 #define WRITE32(td, v) \
 400         do { \
 401                 ENSURE_CODE(td, 2); \
 402                 * (guint16 *)((td)->new_ip) = * (guint16 *)(v); \
 403                 * ((guint16 *)((td)->new_ip) + 1) = * ((guint16 *)(v) + 1); \
 404                 (td)->new_ip += 2; \
 405         } while (0)
 406
 407 #define WRITE64(td, v) \
 408         do { \
 409                 ENSURE_CODE(td, 4); \
 410                 * (guint16 *)((td)->new_ip) = * (guint16 *)(v); \
 411                 * ((guint16 *)((td)->new_ip) + 1) = * ((guint16 *)(v) + 1); \
 412                 * ((guint16 *)((td)->new_ip) + 2) = * ((guint16 *)(v) + 2); \
 413                 * ((guint16 *)((td)->new_ip) + 3) = * ((guint16 *)(v) + 3); \
 414                 (td)->new_ip += 4; \
 415         } while (0)
 416 #else
 417 #define WRITE32(td, v) \
 418         do { \
 419                 ENSURE_CODE(td, 2); \
 420                 * (guint32 *)((td)->new_ip) = * (guint32 *)(v); \
 421                 (td)->new_ip += 2; \
 422         } while (0)
 423
 424 #define WRITE64(td, v) \
 425         do { \
 426                 ENSURE_CODE(td, 4); \
 427                 * (guint64 *)((td)->new_ip) = * (guint64 *)(v); \
 428                 (td)->new_ip += 4; \
 429         } while (0)
 430
 431 #endif
 432
 433 static void
 434 load_arg(TransformData *td, int n)
 435 {
 436         int mt;
 437         MonoClass *klass = NULL;
 438         if (n == 0 && mono_method_signature (td->method)->hasthis) {
 439                 if (td->method->klass->valuetype)
 440                         mt = MINT_TYPE_P;
 441                 else {
 442                         mt = MINT_TYPE_O;
 443                         klass = td->method->klass;
 444                 }
 445                 ADD_CODE(td, MINT_LDTHIS);
 446         } else {
 447                 MonoType *type;
 448                 n -= mono_method_signature (td->method)->hasthis;
 449                 type = mono_method_signature (td->method)->params [n];
 450                 mt = mint_type (type);
 451                 if (mt == MINT_TYPE_VT) {
 452                         gint32 size;
 453                         klass = mono_class_from_mono_type (type);
 454                         if (mono_method_signature (td->method)->pinvoke)
 455                                 size = mono_class_native_size (klass, NULL);
 456                         else
 457                                 size = mono_class_value_size (klass, NULL);
 458                         PUSH_VT(td, size);
 459                         ADD_CODE(td, MINT_LDARG_VT);
 460                         ADD_CODE(td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 461                         WRITE32(td, &size);
 462                 } else {
 463                         ADD_CODE(td, MINT_LDARG_I1 + (mt - MINT_TYPE_I1));
 464                         ADD_CODE(td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 465                         if (mt == MINT_TYPE_O)
 466                                 klass = mono_class_from_mono_type (type);
 467                 }
 468         }
 469         PUSH_TYPE(td, stack_type[mt], klass);
 470 }
 471
 472 static void
 473 store_arg(TransformData *td, int n)
 474 {
 475         int mt;
 476         CHECK_STACK (td, 1);
 477         if (n == 0 && mono_method_signature (td->method)->hasthis)
 478                 ADD_CODE(td, MINT_STTHIS);
 479         else {
 480                 MonoType *type;
 481                 n -= mono_method_signature (td->method)->hasthis;
 482                 type = mono_method_signature (td->method)->params [n];
 483                 mt = mint_type (type);
 484                 if (mt == MINT_TYPE_VT) {
 485                         gint32 size;
 486                         g_error ("data.klass");
 487                         if (mono_method_signature (td->method)->pinvoke)
 488                                 size = mono_class_native_size (type->data.klass, NULL);
 489                         else
 490                                 size = mono_class_value_size (type->data.klass, NULL);
 491                         ADD_CODE(td, MINT_STARG_VT);
 492                         ADD_CODE(td, n);
 493                         WRITE32(td, &size);
 494                         if (td->sp [-1].type == STACK_TYPE_VT)
 495                                 POP_VT(td, size);
 496                 } else {
 497                         ADD_CODE(td, MINT_STARG_I1 + (mt - MINT_TYPE_I1));
 498                         ADD_CODE(td, td->rtm->arg_offsets [n]);
 499                 }
 500         }
 501         --td->sp;
 502 }
 503
 504 static void
 505 store_inarg(TransformData *td, int n)
 506 {
 507         MonoType *type = mono_method_signature (td->method)->params [n];
 508         int mt = mint_type (type);
 509         if (mt == MINT_TYPE_VT) {
 510                 gint32 size;
 511                 MonoClass *klass = mono_class_from_mono_type (type);
 512                 if (mono_method_signature (td->method)->pinvoke)
 513                         size = mono_class_native_size (klass, NULL);
 514                 else
 515                         size = mono_class_value_size (klass, NULL);
 516                 ADD_CODE(td, MINT_STINARG_VT);
 517                 ADD_CODE(td, n);
 518                 WRITE32(td, &size);
 519         } else {
 520                 ADD_CODE(td, MINT_STINARG_I1 + (mt - MINT_TYPE_I1));
 521                 ADD_CODE(td, n);
 522         }
 523 }
 524
 525 static void
 526 load_local(TransformData *td, int n)
 527 {
 528         MonoType *type = td->header->locals [n];
 529         int mt = mint_type (type);
 530         int offset = td->rtm->local_offsets [n];
 531         MonoClass *klass = NULL;
 532         if (mt == MINT_TYPE_VT) {
 533                 klass = mono_class_from_mono_type (type);
 534                 gint32 size = mono_class_value_size (klass, NULL);
 535                 PUSH_VT(td, size);
 536                 ADD_CODE(td, MINT_LDLOC_VT);
 537                 ADD_CODE(td, offset); /*FIX for large offset */
 538                 WRITE32(td, &size);
 539         } else {
 540                 g_assert (mt < MINT_TYPE_VT);
 541                 if (mt == MINT_TYPE_I4 && !td->is_bb_start [td->in_start - td->il_code] && td->last_new_ip != NULL &&
 542                         td->last_new_ip [0] == MINT_STLOC_I4 && td->last_new_ip [1] == offset) {
 543                         td->last_new_ip [0] = MINT_STLOC_NP_I4;
 544                 } else if (mt == MINT_TYPE_O && !td->is_bb_start [td->in_start - td->il_code] && td->last_new_ip != NULL &&
 545                         td->last_new_ip [0] == MINT_STLOC_O && td->last_new_ip [1] == offset) {
 546                         td->last_new_ip [0] = MINT_STLOC_NP_O;
 547                 } else {
 548                         ADD_CODE(td, MINT_LDLOC_I1 + (mt - MINT_TYPE_I1));
 549                         ADD_CODE(td, offset); /*FIX for large offset */
 550                 }
 551                 if (mt == MINT_TYPE_O)
 552                         klass = mono_class_from_mono_type (type);
 553         }
 554         PUSH_TYPE(td, stack_type[mt], klass);
 555 }
 556
 557 static void
 558 store_local(TransformData *td, int n)
 559 {
 560         MonoType *type = td->header->locals [n];
 561         int mt = mint_type (type);
 562         int offset = td->rtm->local_offsets [n];
 563         CHECK_STACK (td, 1);
 564 #if SIZEOF_VOID_P == 8
 565         if (td->sp [-1].type == STACK_TYPE_I4 && stack_type [mt] == STACK_TYPE_I8) {
 566                 ADD_CODE(td, MINT_CONV_I8_I4);
 567                 td->sp [-1].type = STACK_TYPE_I8;
 568         }
 569 #endif
 570         if (!can_store(td->sp [-1].type, stack_type [mt])) {
 571                 g_warning("%s.%s: Store local stack type mismatch %d %d",
 572                         td->method->klass->name, td->method->name,
 573                         stack_type [mt], td->sp [-1].type);
 574         }
 575         if (mt == MINT_TYPE_VT) {
 576                 MonoClass *klass = mono_class_from_mono_type (type);
 577                 gint32 size = mono_class_value_size (klass, NULL);
 578                 ADD_CODE(td, MINT_STLOC_VT);
 579                 ADD_CODE(td, offset); /*FIX for large offset */
 580                 WRITE32(td, &size);
 581                 if (td->sp [-1].type == STACK_TYPE_VT)
 582                         POP_VT(td, size);
 583         } else {
 584                 g_assert (mt < MINT_TYPE_VT);
 585                 ADD_CODE(td, MINT_STLOC_I1 + (mt - MINT_TYPE_I1));
 586                 ADD_CODE(td, offset); /*FIX for large offset */
 587         }
 588         --td->sp;
 589 }
 590
 591 #define SIMPLE_OP(td, op) \
 592         do { \
 593                 ADD_CODE(&td, op); \
 594                 ++td.ip; \
 595         } while (0)
 596
 597 static guint16
 598 get_data_item_index (TransformData *td, void *ptr)
 599 {
 600         gpointer p = g_hash_table_lookup (td->data_hash, ptr);
 601         guint index;
 602         if (p != NULL)
 603                 return GPOINTER_TO_UINT (p) - 1;
 604         if (td->max_data_items == td->n_data_items) {
 605                 td->max_data_items = td->n_data_items == 0 ? 16 : 2 * td->max_data_items;
 606                 td->data_items = g_realloc (td->data_items, td->max_data_items * sizeof(td->data_items [0]));
 607         }
 608         index = td->n_data_items;
 609         td->data_items [index] = ptr;
 610         ++td->n_data_items;
 611         g_hash_table_insert (td->data_hash, ptr, GUINT_TO_POINTER (index + 1));
 612         return index;
 613 }
 614
 615 static void
 616 interp_transform_call (TransformData *td, MonoMethod *method, MonoMethod *target_method, MonoDomain *domain, MonoGenericContext *generic_context, unsigned char *is_bb_start, int body_start_offset)
 617 {
 618         MonoImage *image = method->klass->image;
 619         MonoMethodSignature *csignature;
 620         MonoError error;
 621         int virtual = *td->ip == CEE_CALLVIRT;
 622         int calli = *td->ip == CEE_CALLI || *td->ip == CEE_MONO_CALLI_EXTRA_ARG;
 623         int i;
 624         guint32 vt_stack_used = 0;
 625         guint32 vt_res_size = 0;
 626         int op = -1;
 627         int native = 0;
 628         int is_void = 0;
 629
 630         guint32 token = read32 (td->ip + 1);
 631
 632         if (target_method == NULL) {
 633                 if (calli) {
 634                         CHECK_STACK(td, 1);
 635                         native = (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE && td->sp [-1].type == STACK_TYPE_I);
 636                         --td->sp;
 637                         if (method->wrapper_type != MONO_WRAPPER_NONE)
 638                                 csignature = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
 639                         else
 640                                 csignature = mono_metadata_parse_signature (image, token);
 641                         target_method = NULL;
 642                 } else {
 643                         if (method->wrapper_type == MONO_WRAPPER_NONE)
 644                                 target_method = mono_get_method_full (image, token, NULL, generic_context);
 645                         else
 646                                 target_method = (MonoMethod *)mono_method_get_wrapper_data (method, token);
 647                         csignature = mono_method_signature (target_method);
 648                         if (target_method->klass == mono_defaults.string_class) {
 649                                 if (target_method->name [0] == 'g') {
 650                                         if (strcmp (target_method->name, "get_Chars") == 0)
 651                                                 op = MINT_GETCHR;
 652                                         else if (strcmp (target_method->name, "get_Length") == 0)
 653                                                 op = MINT_STRLEN;
 654                                 }
 655                         } else if (target_method->klass == mono_defaults.array_class) {
 656                                 if (strcmp (target_method->name, "get_Rank") == 0)
 657                                         op = MINT_ARRAY_RANK;
 658                                 else if (strcmp (target_method->name, "get_Length") == 0)
 659                                         op = MINT_LDLEN;
 660                         }
 661                 }
 662         } else {
 663                 csignature = mono_method_signature (target_method);
 664         }
 665
 666         CHECK_STACK (td, csignature->param_count + csignature->hasthis);
 667         if (!calli && (!virtual || (target_method->flags & METHOD_ATTRIBUTE_VIRTUAL) == 0) &&
 668                 (target_method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) == 0 &&
 669                 (target_method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) == 0) {
 670                 int called_inited = mono_class_vtable (domain, target_method->klass)->initialized;
 671                 MonoMethodHeader *mheader = mono_method_get_header (target_method);
 672
 673                 if (/*mono_metadata_signature_equal (method->signature, target_method->signature) */ method == target_method && *(td->ip + 5) == CEE_RET) {
 674                         int offset;
 675                         if (mono_interp_traceopt)
 676                                 g_print ("Optimize tail call of %s.%s\n", target_method->klass->name, target_method->name);
 677                         for (i = csignature->param_count - 1; i >= 0; --i)
 678                                 store_arg (td, i + csignature->hasthis);
 679
 680                         if (csignature->hasthis) {
 681                                 ADD_CODE(td, MINT_STTHIS);
 682                                 --td->sp;
 683                         }
 684                         ADD_CODE(td, MINT_BR_S);
 685                         offset = body_start_offset - ((td->new_ip - 1) - td->new_code);
 686                         ADD_CODE(td, offset);
 687                         if (!is_bb_start [td->ip + 5 - td->il_code])
 688                                 ++td->ip; /* gobble the CEE_RET if it isn't branched to */
 689                         td->ip += 5;
 690                         return;
 691                 } else {
 692                         /* mheader might not exist if this is a delegate invoc, etc */
 693                         if (mheader && *mheader->code == CEE_RET && called_inited) {
 694                                 if (mono_interp_traceopt)
 695                                         g_print ("Inline (empty) call of %s.%s\n", target_method->klass->name, target_method->name);
 696                                 for (i = 0; i < csignature->param_count; i++)
 697                                         ADD_CODE(td, MINT_POP); /*FIX: vt */
 698                                 if (csignature->hasthis) {
 699                                         if (virtual)
 700                                                 ADD_CODE(td, MINT_CKNULL);
 701                                         ADD_CODE(td, MINT_POP);
 702                                 }
 703                                 td->sp -= csignature->param_count + csignature->hasthis;
 704                                 td->ip += 5;
 705                                 return;
 706                         }
 707                 }
 708         }
 709         if (method->wrapper_type == MONO_WRAPPER_NONE && target_method != NULL) {
 710                 if (target_method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
 711                         target_method = mono_marshal_get_native_wrapper (target_method, FALSE, FALSE);
 712                 if (!virtual && target_method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
 713                         target_method = mono_marshal_get_synchronized_wrapper (target_method);
 714         }
 715         g_assert (csignature->call_convention == MONO_CALL_DEFAULT || csignature->call_convention == MONO_CALL_C);
 716         td->sp -= csignature->param_count + csignature->hasthis;
 717         for (i = 0; i < csignature->param_count; ++i) {
 718                 if (td->sp [i + csignature->hasthis].type == STACK_TYPE_VT) {
 719                         gint32 size;
 720                         MonoClass *klass = mono_class_from_mono_type (csignature->params [i]);
 721                         if (csignature->pinvoke && method->wrapper_type != MONO_WRAPPER_NONE)
 722                                 size = mono_class_native_size (klass, NULL);
 723                         else
 724                                 size = mono_class_value_size (klass, NULL);
 725                         size = (size + 7) & ~7;
 726                         vt_stack_used += size;
 727                 }
 728         }
 729
 730         /* need to handle typedbyref ... */
 731         if (csignature->ret->type != MONO_TYPE_VOID) {
 732                 int mt = mint_type(csignature->ret);
 733                 MonoClass *klass = mono_class_from_mono_type (csignature->ret);
 734                 if (mt == MINT_TYPE_VT) {
 735                         if (csignature->pinvoke && method->wrapper_type != MONO_WRAPPER_NONE)
 736                                 vt_res_size = mono_class_native_size (klass, NULL);
 737                         else
 738                                 vt_res_size = mono_class_value_size (klass, NULL);
 739                         PUSH_VT(td, vt_res_size);
 740                 }
 741                 PUSH_TYPE(td, stack_type[mt], klass);
 742         } else
 743                 is_void = TRUE;
 744
 745         if (op >= 0) {
 746                 ADD_CODE(td, op);
 747 #if SIZEOF_VOID_P == 8
 748                 if (op == MINT_LDLEN)
 749                         ADD_CODE(td, MINT_CONV_I4_I8);
 750 #endif
 751         } else {
 752                 if (calli)
 753                         ADD_CODE(td, native ? MINT_CALLI_NAT : MINT_CALLI);
 754                 else if (virtual)
 755                         ADD_CODE(td, is_void ? MINT_VCALLVIRT : MINT_CALLVIRT);
 756                 else
 757                         ADD_CODE(td, is_void ? MINT_VCALL : MINT_CALL);
 758
 759                 if (calli) {
 760                         ADD_CODE(td, get_data_item_index (td, (void *)csignature));
 761                 } else {
 762                         ADD_CODE(td, get_data_item_index (td, (void *)mono_interp_get_runtime_method (domain, target_method, &error)));
 763                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
 764                 }
 765         }
 766         td->ip += 5;
 767         if (vt_stack_used != 0 || vt_res_size != 0) {
 768                 ADD_CODE(td, MINT_VTRESULT);
 769                 ADD_CODE(td, vt_res_size);
 770                 WRITE32(td, &vt_stack_used);
 771                 td->vt_sp -= vt_stack_used;
 772         }
 773 }
 774
 775 static void
 776 generate (MonoMethod *method, RuntimeMethod *rtm, unsigned char *is_bb_start)
 777 {
 778         MonoMethodHeader *header = mono_method_get_header (method);
 779         MonoMethodSignature *signature = mono_method_signature (method);
 780         MonoImage *image = method->klass->image;
 781         MonoDomain *domain = mono_domain_get ();
 782         MonoGenericContext *generic_context = NULL;
 783         MonoError error;
 784         int offset, mt;
 785         int i;
 786         int i32;
 787         MonoClass *klass;
 788         MonoClassField *field;
 789         const unsigned char *end;
 790         int new_in_start_offset;
 791         int body_start_offset;
 792         int target;
 793         guint32 token;
 794         TransformData td;
 795         int generating_code = 1;
 796
 797         if (mono_method_signature (method)->is_inflated)
 798                 generic_context = &((MonoMethodInflated *) method)->context;
 799
 800         memset(&td, 0, sizeof(td));
 801         td.method = method;
 802         td.rtm = rtm;
 803         td.is_bb_start = is_bb_start;
 804         td.il_code = header->code;
 805         td.code_size = header->code_size;
 806         td.header = header;
 807         td.max_code_size = td.code_size;
 808         td.new_code = (unsigned short *)g_malloc(td.max_code_size * sizeof(gushort));
 809         td.new_code_end = td.new_code + td.max_code_size;
 810         td.in_offsets = g_malloc0(header->code_size * sizeof(int));
 811         td.forward_refs = g_malloc(header->code_size * sizeof(int));
 812         td.stack_state = g_malloc0(header->code_size * sizeof(StackInfo *));
 813         td.stack_height = g_malloc(header->code_size * sizeof(int));
 814         td.vt_stack_size = g_malloc(header->code_size * sizeof(int));
 815         td.n_data_items = 0;
 816         td.max_data_items = 0;
 817         td.data_items = NULL;
 818         td.data_hash = g_hash_table_new (NULL, NULL);
 819         rtm->data_items = td.data_items;
 820         for (i = 0; i < header->code_size; i++) {
 821                 td.forward_refs [i] = -1;
 822                 td.stack_height [i] = -1;
 823         }
 824         td.new_ip = td.new_code;
 825         td.last_new_ip = NULL;
 826
 827         td.stack = g_malloc0(header->max_stack * sizeof(td.stack[0]));
 828         td.sp = td.stack;
 829         td.max_stack_height = 0;
 830
 831         for (i = 0; i < header->num_clauses; i++) {
 832                 MonoExceptionClause *c = header->clauses + i;
 833                 td.stack_height [c->handler_offset] = 0;
 834                 td.vt_stack_size [c->handler_offset] = 0;
 835                 td.is_bb_start [c->handler_offset] = 1;
 836                 if (c->flags == MONO_EXCEPTION_CLAUSE_NONE) {
 837                         td.stack_height [c->handler_offset] = 1;
 838                         td.stack_state [c->handler_offset] = g_malloc0(sizeof(StackInfo));
 839                         td.stack_state [c->handler_offset][0].type = STACK_TYPE_O;
 840                         td.stack_state [c->handler_offset][0].klass = NULL; /*FIX*/
 841                 }
 842         }
 843
 844         td.ip = header->code;
 845         end = td.ip + header->code_size;
 846
 847         if (mono_interp_traceopt) {
 848                 char *tmp = mono_disasm_code (NULL, method, td.ip, end);
 849                 char *name = mono_method_full_name (method, TRUE);
 850                 g_print ("Method %s, original code:\n", name);
 851                 g_print ("%s\n", tmp);
 852                 g_free (tmp);
 853                 g_free (name);
 854         }
 855
 856         for (i = 0; i < signature->param_count; i++)
 857                 store_inarg(&td, i);
 858
 859         body_start_offset = td.new_ip - td.new_code;
 860
 861         for (i = 0; i < header->num_locals; i++) {
 862                 int mt = mint_type(header->locals [i]);
 863                 if (mt == MINT_TYPE_VT || mt == MINT_TYPE_O) {
 864                         ADD_CODE(&td, MINT_INITLOCALS);
 865                         break;
 866                 }
 867         }
 868
 869         while (td.ip < end) {
 870                 int in_offset;
 871
 872                 g_assert (td.sp >= td.stack);
 873                 g_assert (td.vt_sp < 0x10000000);
 874                 in_offset = td.ip - header->code;
 875                 td.in_offsets [in_offset] = td.new_ip - td.new_code;
 876                 new_in_start_offset = td.new_ip - td.new_code;
 877                 td.in_start = td.ip;
 878                 while (td.forward_refs [in_offset] >= 0) {
 879                         int j = td.forward_refs [in_offset];
 880                         int slot;
 881                         td.forward_refs [in_offset] = td.forward_refs [j];
 882                         if (td.in_offsets [j] < 0) {
 883                                 int old_switch_offset = -td.in_offsets [j];
 884                                 int new_switch_offset = td.in_offsets [old_switch_offset];
 885                                 int switch_case = (j - old_switch_offset - 5) / 4;
 886                                 int n_cases = read32 (header->code + old_switch_offset + 1);
 887                                 offset = (td.new_ip - td.new_code) - (new_switch_offset + 2 * n_cases + 3);
 888                                 slot = new_switch_offset + 3 + 2 * switch_case;
 889                                 td.new_code [slot] = * (unsigned short *)(&offset);
 890                                 td.new_code [slot + 1] = * ((unsigned short *)&offset + 1);
 891                         } else {
 892                                 int op = td.new_code [td.in_offsets [j]];
 893                                 if (mono_interp_opargtype [op] == MintOpShortBranch) {
 894                                         offset = (td.new_ip - td.new_code) - td.in_offsets [j];
 895                                         g_assert (offset <= 32767);
 896                                         slot = td.in_offsets [j] + 1;
 897                                         td.new_code [slot] = offset;
 898                                 } else {
 899                                         offset = (td.new_ip - td.new_code) - td.in_offsets [j];
 900                                         slot = td.in_offsets [j] + 1;
 901                                         td.new_code [slot] = * (unsigned short *)(&offset);
 902                                         td.new_code [slot + 1] = * ((unsigned short *)&offset + 1);
 903                                 }
 904                         }
 905                 }
 906                 if (td.stack_height [in_offset] >= 0) {
 907                         g_assert (is_bb_start [in_offset]);
 908                         if (td.stack_height [in_offset] > 0)
 909                                 memcpy (td.stack, td.stack_state [in_offset], td.stack_height [in_offset] * sizeof(td.stack [0]));
 910                         td.sp = td.stack + td.stack_height [in_offset];
 911                         td.vt_sp = td.vt_stack_size [in_offset];
 912                 }
 913                 if (is_bb_start [in_offset]) {
 914                         generating_code = 1;
 915                 }
 916                 if (!generating_code) {
 917                         while (td.ip < end && !is_bb_start [td.ip - td.il_code])
 918                                 ++td.ip;
 919                         continue;
 920                 }
 921                 if (mono_interp_traceopt > 1) {
 922                         printf("IL_%04lx %s %-10s -> IL_%04lx, sp %ld, %s %-12s vt_sp %u (max %u)\n",
 923                                 td.ip - td.il_code,
 924                                 td.is_bb_start [td.ip - td.il_code] == 3 ? "<>" :
 925                                 td.is_bb_start [td.ip - td.il_code] == 2 ? "< " :
 926                                 td.is_bb_start [td.ip - td.il_code] == 1 ? " >" : "  ",
 927                                 mono_opcode_name (*td.ip), td.new_ip - td.new_code, td.sp - td.stack,
 928                                 td.sp > td.stack ? stack_type_string [td.sp [-1].type] : "  ",
 929                                 (td.sp > td.stack && (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_VT)) ? (td.sp [-1].klass == NULL ? "?" : td.sp [-1].klass->name) : "",
 930                                 td.vt_sp, td.max_vt_sp);
 931                 }
 932                 switch (*td.ip) {
 933                 case CEE_NOP:
 934                         /* lose it */
 935                         ++td.ip;
 936                         break;
 937                 case CEE_BREAK:
 938                         SIMPLE_OP(td, MINT_BREAK);
 939                         break;
 940                 case CEE_LDARG_0:
 941                 case CEE_LDARG_1:
 942                 case CEE_LDARG_2:
 943                 case CEE_LDARG_3:
 944                         load_arg (&td, *td.ip - CEE_LDARG_0);
 945                         ++td.ip;
 946                         break;
 947                 case CEE_LDLOC_0:
 948                 case CEE_LDLOC_1:
 949                 case CEE_LDLOC_2:
 950                 case CEE_LDLOC_3:
 951                         load_local (&td, *td.ip - CEE_LDLOC_0);
 952                         ++td.ip;
 953                         break;
 954                 case CEE_STLOC_0:
 955                 case CEE_STLOC_1:
 956                 case CEE_STLOC_2:
 957                 case CEE_STLOC_3:
 958                         store_local (&td, *td.ip - CEE_STLOC_0);
 959                         ++td.ip;
 960                         break;
 961                 case CEE_LDARG_S:
 962                         load_arg (&td, ((guint8 *)td.ip)[1]);
 963                         td.ip += 2;
 964                         break;
 965                 case CEE_LDARGA_S: {
 966                         int n = ((guint8 *)td.ip)[1];
 967                         if (n == 0 && signature->hasthis)
 968                                 ADD_CODE(&td, MINT_LDTHISA);
 969                         else {
 970                                 ADD_CODE(&td, MINT_LDARGA);
 971                                 ADD_CODE(&td, td.rtm->arg_offsets [n - signature->hasthis]);
 972                         }
 973                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
 974                         td.ip += 2;
 975                         break;
 976                 }
 977                 case CEE_STARG_S:
 978                         store_arg (&td, ((guint8 *)td.ip)[1]);
 979                         td.ip += 2;
 980                         break;
 981                 case CEE_LDLOC_S:
 982                         load_local (&td, ((guint8 *)td.ip)[1]);
 983                         td.ip += 2;
 984                         break;
 985                 case CEE_LDLOCA_S:
 986                         ADD_CODE(&td, MINT_LDLOCA_S);
 987                         ADD_CODE(&td, td.rtm->local_offsets [((guint8 *)td.ip)[1]]);
 988                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
 989                         td.ip += 2;
 990                         break;
 991                 case CEE_STLOC_S:
 992                         store_local (&td, ((guint8 *)td.ip)[1]);
 993                         td.ip += 2;
 994                         break;
 995                 case CEE_LDNULL:
 996                         SIMPLE_OP(td, MINT_LDNULL);
 997                         PUSH_TYPE(&td, STACK_TYPE_O, NULL);
 998                         break;
 999                 case CEE_LDC_I4_M1:
1000                         SIMPLE_OP(td, MINT_LDC_I4_M1);
1001                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1002                         break;
1003                 case CEE_LDC_I4_0:
1004                         if (!td.is_bb_start[td.ip + 1 - td.il_code] && td.ip [1] == 0xfe && td.ip [2] == CEE_CEQ &&
1005                                 td.sp > td.stack && td.sp [-1].type == STACK_TYPE_I4) {
1006                                 SIMPLE_OP(td, MINT_CEQ0_I4);
1007                                 td.ip += 2;
1008                         } else {
1009                                 SIMPLE_OP(td, MINT_LDC_I4_0);
1010                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1011                         }
1012                         break;
1013                 case CEE_LDC_I4_1:
1014                         if (!td.is_bb_start[td.ip + 1 - td.il_code] &&
1015                                 (td.ip [1] == CEE_ADD || td.ip [1] == CEE_SUB) && td.sp [-1].type == STACK_TYPE_I4) {
1016                                 ADD_CODE(&td, td.ip [1] == CEE_ADD ? MINT_ADD1_I4 : MINT_SUB1_I4);
1017                                 td.ip += 2;
1018                         } else {
1019                                 SIMPLE_OP(td, MINT_LDC_I4_1);
1020                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1021                         }
1022                         break;
1023                 case CEE_LDC_I4_2:
1024                 case CEE_LDC_I4_3:
1025                 case CEE_LDC_I4_4:
1026                 case CEE_LDC_I4_5:
1027                 case CEE_LDC_I4_6:
1028                 case CEE_LDC_I4_7:
1029                 case CEE_LDC_I4_8:
1030                         SIMPLE_OP(td, (*td.ip - CEE_LDC_I4_0) + MINT_LDC_I4_0);
1031                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1032                         break;
1033                 case CEE_LDC_I4_S:
1034                         ADD_CODE(&td, MINT_LDC_I4_S);
1035                         ADD_CODE(&td, ((gint8 *) td.ip) [1]);
1036                         td.ip += 2;
1037                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1038                         break;
1039                 case CEE_LDC_I4:
1040                         i32 = read32 (td.ip + 1);
1041                         ADD_CODE(&td, MINT_LDC_I4);
1042                         WRITE32(&td, &i32);
1043                         td.ip += 5;
1044                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1045                         break;
1046                 case CEE_LDC_I8: {
1047                         gint64 val = read64 (td.ip + 1);
1048                         ADD_CODE(&td, MINT_LDC_I8);
1049                         WRITE64(&td, &val);
1050                         td.ip += 9;
1051                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I8);
1052                         break;
1053                 }
1054                 case CEE_LDC_R4: {
1055                         float val;
1056                         readr4 (td.ip + 1, &val);
1057                         ADD_CODE(&td, MINT_LDC_R4);
1058                         WRITE32(&td, &val);
1059                         td.ip += 5;
1060                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_R8);
1061                         break;
1062                 }
1063                 case CEE_LDC_R8: {
1064                         double val;
1065                         readr8 (td.ip + 1, &val);
1066                         ADD_CODE(&td, MINT_LDC_R8);
1067                         WRITE64(&td, &val);
1068                         td.ip += 9;
1069                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_R8);
1070                         break;
1071                 }
1072                 case CEE_DUP: {
1073                         int type = td.sp [-1].type;
1074                         MonoClass *klass = td.sp [-1].klass;
1075                         if (td.sp [-1].type == STACK_TYPE_VT) {
1076                                 gint32 size = mono_class_value_size (klass, NULL);
1077                                 PUSH_VT(&td, size);
1078                                 ADD_CODE(&td, MINT_DUP_VT);
1079                                 WRITE32(&td, &size);
1080                                 td.ip ++;
1081                         } else
1082                                 SIMPLE_OP(td, MINT_DUP);
1083                         PUSH_TYPE(&td, type, klass);
1084                         break;
1085                 }
1086                 case CEE_POP:
1087                         CHECK_STACK(&td, 1);
1088                         SIMPLE_OP(td, MINT_POP);
1089                         if (td.sp [-1].type == STACK_TYPE_VT) {
1090                                 int size = mono_class_value_size (td.sp [-1].klass, NULL);
1091                                 size = (size + 7) & ~7;
1092                                 ADD_CODE(&td, MINT_VTRESULT);
1093                                 ADD_CODE(&td, 0);
1094                                 WRITE32(&td, &size);
1095                                 td.vt_sp -= size;
1096                         }
1097                         --td.sp;
1098                         break;
1099                 case CEE_JMP: {
1100                         MonoMethod *m;
1101                         if (td.sp > td.stack)
1102                                 g_warning ("CEE_JMP: stack must be empty");
1103                         token = read32 (td.ip + 1);
1104                         m = mono_get_method_full (image, token, NULL, generic_context);
1105                         ADD_CODE (&td, MINT_JMP);
1106                         ADD_CODE (&td, get_data_item_index (&td, mono_interp_get_runtime_method (domain, m, &error)));
1107                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
1108                         td.ip += 5;
1109                         break;
1110                 }
1111                 case CEE_CALLVIRT: /* Fall through */
1112                 case CEE_CALLI:    /* Fall through */
1113                 case CEE_CALL: {
1114                         interp_transform_call (&td, method, NULL, domain, generic_context, is_bb_start, body_start_offset);
1115                         break;
1116                 }
1117                 case CEE_RET: {
1118                         int vt_size = 0;
1119                         if (signature->ret->type != MONO_TYPE_VOID) {
1120                                 --td.sp;
1121                                 MonoClass *klass = mono_class_from_mono_type (signature->ret);
1122                                 if (mint_type (&klass->byval_arg) == MINT_TYPE_VT) {
1123                                         vt_size = mono_class_value_size (klass, NULL);
1124                                         vt_size = (vt_size + 7) & ~7;
1125                                 }
1126                         }
1127                         if (td.sp > td.stack)
1128                                 g_warning ("%s.%s: CEE_RET: more values on stack: %d", td.method->klass->name, td.method->name, td.sp - td.stack);
1129                         if (td.vt_sp != vt_size)
1130                                 g_warning ("%s.%s: CEE_RET: value type stack: %d vs. %d", td.method->klass->name, td.method->name, td.vt_sp, vt_size);
1131                         if (vt_size == 0)
1132                                 SIMPLE_OP(td, signature->ret->type == MONO_TYPE_VOID ? MINT_RET_VOID : MINT_RET);
1133                         else {
1134                                 ADD_CODE(&td, MINT_RET_VT);
1135                                 WRITE32(&td, &vt_size);
1136                                 ++td.ip;
1137                         }
1138                         generating_code = 0;
1139                         break;
1140                 }
1141                 case CEE_BR:
1142                         handle_branch (&td, MINT_BR_S, MINT_BR, 5 + read32 (td.ip + 1));
1143                         td.ip += 5;
1144                         generating_code = 0;
1145                         break;
1146                 case CEE_BR_S:
1147                         handle_branch (&td, MINT_BR_S, MINT_BR, 2 + (gint8)td.ip [1]);
1148                         td.ip += 2;
1149                         generating_code = 0;
1150                         break;
1151                 case CEE_BRFALSE:
1152                         one_arg_branch (&td, MINT_BRFALSE_I4, 5 + read32 (td.ip + 1));
1153                         td.ip += 5;
1154                         break;
1155                 case CEE_BRFALSE_S:
1156                         one_arg_branch (&td, MINT_BRFALSE_I4, 2 + (gint8)td.ip [1]);
1157                         td.ip += 2;
1158                         break;
1159                 case CEE_BRTRUE:
1160                         one_arg_branch (&td, MINT_BRTRUE_I4, 5 + read32 (td.ip + 1));
1161                         td.ip += 5;
1162                         break;
1163                 case CEE_BRTRUE_S:
1164                         one_arg_branch (&td, MINT_BRTRUE_I4, 2 + (gint8)td.ip [1]);
1165                         td.ip += 2;
1166                         break;
1167                 case CEE_BEQ:
1168                         two_arg_branch (&td, MINT_BEQ_I4, 5 + read32 (td.ip + 1));
1169                         td.ip += 5;
1170                         break;
1171                 case CEE_BEQ_S:
1172                         two_arg_branch (&td, MINT_BEQ_I4, 2 + (gint8) td.ip [1]);
1173                         td.ip += 2;
1174                         break;
1175                 case CEE_BGE:
1176                         two_arg_branch (&td, MINT_BGE_I4, 5 + read32 (td.ip + 1));
1177                         td.ip += 5;
1178                         break;
1179                 case CEE_BGE_S:
1180                         two_arg_branch (&td, MINT_BGE_I4, 2 + (gint8) td.ip [1]);
1181                         td.ip += 2;
1182                         break;
1183                 case CEE_BGT:
1184                         two_arg_branch (&td, MINT_BGT_I4, 5 + read32 (td.ip + 1));
1185                         td.ip += 5;
1186                         break;
1187                 case CEE_BGT_S:
1188                         two_arg_branch (&td, MINT_BGT_I4, 2 + (gint8) td.ip [1]);
1189                         td.ip += 2;
1190                         break;
1191                 case CEE_BLT:
1192                         two_arg_branch (&td, MINT_BLT_I4, 5 + read32 (td.ip + 1));
1193                         td.ip += 5;
1194                         break;
1195                 case CEE_BLT_S:
1196                         two_arg_branch (&td, MINT_BLT_I4, 2 + (gint8) td.ip [1]);
1197                         td.ip += 2;
1198                         break;
1199                 case CEE_BLE:
1200                         two_arg_branch (&td, MINT_BLE_I4, 5 + read32 (td.ip + 1));
1201                         td.ip += 5;
1202                         break;
1203                 case CEE_BLE_S:
1204                         two_arg_branch (&td, MINT_BLE_I4, 2 + (gint8) td.ip [1]);
1205                         td.ip += 2;
1206                         break;
1207                 case CEE_BNE_UN:
1208                         two_arg_branch (&td, MINT_BNE_UN_I4, 5 + read32 (td.ip + 1));
1209                         td.ip += 5;
1210                         break;
1211                 case CEE_BNE_UN_S:
1212                         two_arg_branch (&td, MINT_BNE_UN_I4, 2 + (gint8) td.ip [1]);
1213                         td.ip += 2;
1214                         break;
1215                 case CEE_BGE_UN:
1216                         two_arg_branch (&td, MINT_BGE_UN_I4, 5 + read32 (td.ip + 1));
1217                         td.ip += 5;
1218                         break;
1219                 case CEE_BGE_UN_S:
1220                         two_arg_branch (&td, MINT_BGE_UN_I4, 2 + (gint8) td.ip [1]);
1221                         td.ip += 2;
1222                         break;
1223                 case CEE_BGT_UN:
1224                         two_arg_branch (&td, MINT_BGT_UN_I4, 5 + read32 (td.ip + 1));
1225                         td.ip += 5;
1226                         break;
1227                 case CEE_BGT_UN_S:
1228                         two_arg_branch (&td, MINT_BGT_UN_I4, 2 + (gint8) td.ip [1]);
1229                         td.ip += 2;
1230                         break;
1231                 case CEE_BLE_UN:
1232                         two_arg_branch (&td, MINT_BLE_UN_I4, 5 + read32 (td.ip + 1));
1233                         td.ip += 5;
1234                         break;
1235                 case CEE_BLE_UN_S:
1236                         two_arg_branch (&td, MINT_BLE_UN_I4, 2 + (gint8) td.ip [1]);
1237                         td.ip += 2;
1238                         break;
1239                 case CEE_BLT_UN:
1240                         two_arg_branch (&td, MINT_BLT_UN_I4, 5 + read32 (td.ip + 1));
1241                         td.ip += 5;
1242                         break;
1243                 case CEE_BLT_UN_S:
1244                         two_arg_branch (&td, MINT_BLT_UN_I4, 2 + (gint8) td.ip [1]);
1245                         td.ip += 2;
1246                         break;
1247                 case CEE_SWITCH: {
1248                         guint32 n;
1249                         const unsigned char *next_ip;
1250                         const unsigned char *base_ip = td.ip;
1251                         unsigned short *next_new_ip;
1252                         ++td.ip;
1253                         n = read32 (td.ip);
1254                         ADD_CODE(&td, MINT_SWITCH);
1255                         ADD_CODE(&td, * (unsigned short *)(&n));
1256                         ADD_CODE(&td, * ((unsigned short *)&n + 1));
1257                         td.ip += 4;
1258                         next_ip = td.ip + n * 4;
1259                         next_new_ip = td.new_ip + n * 2;
1260                         for (i = 0; i < n; i++) {
1261                                 offset = read32 (td.ip);
1262                                 target = next_ip - td.il_code + offset;
1263                                 if (offset < 0)
1264                                         target = td.in_offsets [target] - (next_new_ip - td.new_code);
1265                                 else {
1266                                         int prev = td.forward_refs [target];
1267                                         td.forward_refs [td.ip - td.il_code] = prev;
1268                                         td.forward_refs [target] = td.ip - td.il_code;
1269                                         td.in_offsets [td.ip - td.il_code] = - (base_ip - td.il_code);
1270                                 }
1271                                 ADD_CODE(&td, * (unsigned short *)(&target));
1272                                 ADD_CODE(&td, * ((unsigned short *)&target + 1));
1273                                 td.ip += 4;
1274                         }
1275                         --td.sp;
1276                         break;
1277                 }
1278                 case CEE_LDIND_I1:
1279                         CHECK_STACK (&td, 1);
1280                         SIMPLE_OP (td, MINT_LDIND_I1);
1281                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1282                         break;
1283                 case CEE_LDIND_U1:
1284                         CHECK_STACK (&td, 1);
1285                         SIMPLE_OP (td, MINT_LDIND_U1);
1286                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1287                         break;
1288                 case CEE_LDIND_I2:
1289                         CHECK_STACK (&td, 1);
1290                         SIMPLE_OP (td, MINT_LDIND_I2);
1291                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1292                         break;
1293                 case CEE_LDIND_U2:
1294                         CHECK_STACK (&td, 1);
1295                         SIMPLE_OP (td, MINT_LDIND_U2);
1296                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1297                         break;
1298                 case CEE_LDIND_I4:
1299                         CHECK_STACK (&td, 1);
1300                         SIMPLE_OP (td, MINT_LDIND_I4);
1301                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1302                         break;
1303                 case CEE_LDIND_U4:
1304                         CHECK_STACK (&td, 1);
1305                         SIMPLE_OP (td, MINT_LDIND_U4);
1306                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1307                         break;
1308                 case CEE_LDIND_I8:
1309                         CHECK_STACK (&td, 1);
1310                         SIMPLE_OP (td, MINT_LDIND_I8);
1311                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1312                         break;
1313                 case CEE_LDIND_I:
1314                         CHECK_STACK (&td, 1);
1315                         SIMPLE_OP (td, MINT_LDIND_I);
1316                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1317                         break;
1318                 case CEE_LDIND_R4:
1319                         CHECK_STACK (&td, 1);
1320                         SIMPLE_OP (td, MINT_LDIND_R4);
1321                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1322                         break;
1323                 case CEE_LDIND_R8:
1324                         CHECK_STACK (&td, 1);
1325                         SIMPLE_OP (td, MINT_LDIND_R8);
1326                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1327                         break;
1328                 case CEE_LDIND_REF:
1329                         CHECK_STACK (&td, 1);
1330                         SIMPLE_OP (td, MINT_LDIND_REF);
1331                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
1332                         break;
1333                 case CEE_STIND_REF:
1334                         CHECK_STACK (&td, 2);
1335                         SIMPLE_OP (td, MINT_STIND_REF);
1336                         td.sp -= 2;
1337                         break;
1338                 case CEE_STIND_I1:
1339                         CHECK_STACK (&td, 2);
1340                         SIMPLE_OP (td, MINT_STIND_I1);
1341                         td.sp -= 2;
1342                         break;
1343                 case CEE_STIND_I2:
1344                         CHECK_STACK (&td, 2);
1345                         SIMPLE_OP (td, MINT_STIND_I2);
1346                         td.sp -= 2;
1347                         break;
1348                 case CEE_STIND_I4:
1349                         CHECK_STACK (&td, 2);
1350                         SIMPLE_OP (td, MINT_STIND_I4);
1351                         td.sp -= 2;
1352                         break;
1353                 case CEE_STIND_I:
1354                         CHECK_STACK (&td, 2);
1355                         SIMPLE_OP (td, MINT_STIND_I);
1356                         td.sp -= 2;
1357                         break;
1358                 case CEE_STIND_I8:
1359                         CHECK_STACK (&td, 2);
1360                         SIMPLE_OP (td, MINT_STIND_I8);
1361                         td.sp -= 2;
1362                         break;
1363                 case CEE_STIND_R4:
1364                         CHECK_STACK (&td, 2);
1365                         SIMPLE_OP (td, MINT_STIND_R4);
1366                         td.sp -= 2;
1367                         break;
1368                 case CEE_STIND_R8:
1369                         CHECK_STACK (&td, 2);
1370                         SIMPLE_OP (td, MINT_STIND_R8);
1371                         td.sp -= 2;
1372                         break;
1373                 case CEE_ADD:
1374                         binary_arith_op(&td, MINT_ADD_I4);
1375                         ++td.ip;
1376                         break;
1377                 case CEE_SUB:
1378                         binary_arith_op(&td, MINT_SUB_I4);
1379                         ++td.ip;
1380                         break;
1381                 case CEE_MUL:
1382                         binary_arith_op(&td, MINT_MUL_I4);
1383                         ++td.ip;
1384                         break;
1385                 case CEE_DIV:
1386                         binary_arith_op(&td, MINT_DIV_I4);
1387                         ++td.ip;
1388                         break;
1389                 case CEE_DIV_UN:
1390                         binary_arith_op(&td, MINT_DIV_UN_I4);
1391                         ++td.ip;
1392                         break;
1393                 case CEE_REM:
1394                         binary_int_op (&td, MINT_REM_I4);
1395                         ++td.ip;
1396                         break;
1397                 case CEE_REM_UN:
1398                         binary_int_op (&td, MINT_REM_UN_I4);
1399                         ++td.ip;
1400                         break;
1401                 case CEE_AND:
1402                         binary_int_op (&td, MINT_AND_I4);
1403                         ++td.ip;
1404                         break;
1405                 case CEE_OR:
1406                         binary_int_op (&td, MINT_OR_I4);
1407                         ++td.ip;
1408                         break;
1409                 case CEE_XOR:
1410                         binary_int_op (&td, MINT_XOR_I4);
1411                         ++td.ip;
1412                         break;
1413                 case CEE_SHL:
1414                         shift_op (&td, MINT_SHL_I4);
1415                         ++td.ip;
1416                         break;
1417                 case CEE_SHR:
1418                         shift_op (&td, MINT_SHR_I4);
1419                         ++td.ip;
1420                         break;
1421                 case CEE_SHR_UN:
1422                         shift_op (&td, MINT_SHR_UN_I4);
1423                         ++td.ip;
1424                         break;
1425                 case CEE_NEG:
1426                         unary_arith_op (&td, MINT_NEG_I4);
1427                         ++td.ip;
1428                         break;
1429                 case CEE_NOT:
1430                         unary_arith_op (&td, MINT_NOT_I4);
1431                         ++td.ip;
1432                         break;
1433                 case CEE_CONV_U1:
1434                         CHECK_STACK (&td, 1);
1435                         switch (td.sp [-1].type) {
1436                         case STACK_TYPE_R8:
1437                                 ADD_CODE(&td, MINT_CONV_U1_R8);
1438                                 break;
1439                         case STACK_TYPE_I4:
1440                                 ADD_CODE(&td, MINT_CONV_U1_I4);
1441                                 break;
1442                         case STACK_TYPE_I8:
1443                                 ADD_CODE(&td, MINT_CONV_U1_I8);
1444                                 break;
1445                         default:
1446                                 g_assert_not_reached ();
1447                         }
1448                         ++td.ip;
1449                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1450                         break;
1451                 case CEE_CONV_I1:
1452                         CHECK_STACK (&td, 1);
1453                         switch (td.sp [-1].type) {
1454                         case STACK_TYPE_R8:
1455                                 ADD_CODE(&td, MINT_CONV_I1_R8);
1456                                 break;
1457                         case STACK_TYPE_I4:
1458                                 ADD_CODE(&td, MINT_CONV_I1_I4);
1459                                 break;
1460                         case STACK_TYPE_I8:
1461                                 ADD_CODE(&td, MINT_CONV_I1_I8);
1462                                 break;
1463                         default:
1464                                 g_assert_not_reached ();
1465                         }
1466                         ++td.ip;
1467                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1468                         break;
1469                 case CEE_CONV_U2:
1470                         CHECK_STACK (&td, 1);
1471                         switch (td.sp [-1].type) {
1472                         case STACK_TYPE_R8:
1473                                 ADD_CODE(&td, MINT_CONV_U2_R8);
1474                                 break;
1475                         case STACK_TYPE_I4:
1476                                 ADD_CODE(&td, MINT_CONV_U2_I4);
1477                                 break;
1478                         case STACK_TYPE_I8:
1479                                 ADD_CODE(&td, MINT_CONV_U2_I8);
1480                                 break;
1481                         default:
1482                                 g_assert_not_reached ();
1483                         }
1484                         ++td.ip;
1485                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1486                         break;
1487                 case CEE_CONV_I2:
1488                         CHECK_STACK (&td, 1);
1489                         switch (td.sp [-1].type) {
1490                         case STACK_TYPE_R8:
1491                                 ADD_CODE(&td, MINT_CONV_I2_R8);
1492                                 break;
1493                         case STACK_TYPE_I4:
1494                                 ADD_CODE(&td, MINT_CONV_I2_I4);
1495                                 break;
1496                         case STACK_TYPE_I8:
1497                                 ADD_CODE(&td, MINT_CONV_I2_I8);
1498                                 break;
1499                         default:
1500                                 g_assert_not_reached ();
1501                         }
1502                         ++td.ip;
1503                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1504                         break;
1505                 case CEE_CONV_U:
1506                         CHECK_STACK (&td, 1);
1507                         switch (td.sp [-1].type) {
1508                         case STACK_TYPE_R8:
1509 #if SIZEOF_VOID_P == 4
1510                                 ADD_CODE(&td, MINT_CONV_U4_R8);
1511 #else
1512                                 ADD_CODE(&td, MINT_CONV_U8_R8);
1513 #endif
1514                                 break;
1515                         case STACK_TYPE_I4:
1516 #if SIZEOF_VOID_P == 8
1517                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1518 #endif
1519                                 break;
1520                         case STACK_TYPE_I8:
1521 #if SIZEOF_VOID_P == 4
1522                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1523 #endif
1524                                 break;
1525                         case STACK_TYPE_MP:
1526                                 break;
1527                         default:
1528                                 g_assert_not_reached ();
1529                         }
1530                         ++td.ip;
1531                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1532                         break;
1533                 case CEE_CONV_I:
1534                         CHECK_STACK (&td, 1);
1535                         switch (td.sp [-1].type) {
1536                         case STACK_TYPE_R8:
1537 #if SIZEOF_VOID_P == 8
1538                                 ADD_CODE(&td, MINT_CONV_I8_R8);
1539 #else
1540                                 ADD_CODE(&td, MINT_CONV_I4_R8);
1541 #endif
1542                                 break;
1543                         case STACK_TYPE_I4:
1544 #if SIZEOF_VOID_P == 8
1545                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1546 #endif
1547                                 break;
1548                         case STACK_TYPE_O:
1549                                 break;
1550                         case STACK_TYPE_MP:
1551                                 break;
1552                         case STACK_TYPE_I8:
1553 #if SIZEOF_VOID_P == 4
1554                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1555 #endif
1556                                 break;
1557                         default:
1558                                 g_assert_not_reached ();
1559                         }
1560                         ++td.ip;
1561                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1562                         break;
1563                 case CEE_CONV_U4:
1564                         CHECK_STACK (&td, 1);
1565                         switch (td.sp [-1].type) {
1566                         case STACK_TYPE_R8:
1567                                 ADD_CODE(&td, MINT_CONV_U4_R8);
1568                                 break;
1569                         case STACK_TYPE_I4:
1570                                 break;
1571                         case STACK_TYPE_I8:
1572                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1573                                 break;
1574                         case STACK_TYPE_MP:
1575 #if SIZEOF_VOID_P == 8
1576                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1577 #endif
1578                                 break;
1579                         default:
1580                                 g_assert_not_reached ();
1581                         }
1582                         ++td.ip;
1583                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1584                         break;
1585                 case CEE_CONV_I4:
1586                         CHECK_STACK (&td, 1);
1587                         switch (td.sp [-1].type) {
1588                         case STACK_TYPE_R8:
1589                                 ADD_CODE(&td, MINT_CONV_I4_R8);
1590                                 break;
1591                         case STACK_TYPE_I4:
1592                                 break;
1593                         case STACK_TYPE_I8:
1594                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1595                                 break;
1596                         case STACK_TYPE_MP:
1597 #if SIZEOF_VOID_P == 8
1598                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1599 #endif
1600                                 break;
1601                         default:
1602                                 g_assert_not_reached ();
1603                         }
1604                         ++td.ip;
1605                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1606                         break;
1607                 case CEE_CONV_I8:
1608                         CHECK_STACK (&td, 1);
1609                         switch (td.sp [-1].type) {
1610                         case STACK_TYPE_R8:
1611                                 ADD_CODE(&td, MINT_CONV_I8_R8);
1612                                 break;
1613                         case STACK_TYPE_I4:
1614                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1615                                 break;
1616                         case STACK_TYPE_I8:
1617                                 break;
1618                         case STACK_TYPE_MP:
1619 #if SIZEOF_VOID_P == 4
1620                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1621 #endif
1622                                 break;
1623                         default:
1624                                 g_assert_not_reached ();
1625                         }
1626                         ++td.ip;
1627                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1628                         break;
1629                 case CEE_CONV_R4:
1630                         CHECK_STACK (&td, 1);
1631                         switch (td.sp [-1].type) {
1632                         case STACK_TYPE_R8:
1633                                 ADD_CODE(&td, MINT_CONV_R4_R8);
1634                                 break;
1635                         case STACK_TYPE_I8:
1636                                 ADD_CODE(&td, MINT_CONV_R4_I8);
1637                                 break;
1638                         case STACK_TYPE_I4:
1639                                 ADD_CODE(&td, MINT_CONV_R4_I4);
1640                                 break;
1641                         default:
1642                                 g_assert_not_reached ();
1643                         }
1644                         ++td.ip;
1645                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1646                         break;
1647                 case CEE_CONV_R8:
1648                         CHECK_STACK (&td, 1);
1649                         switch (td.sp [-1].type) {
1650                         case STACK_TYPE_I4:
1651                                 ADD_CODE(&td, MINT_CONV_R8_I4);
1652                                 break;
1653                         case STACK_TYPE_I8:
1654                                 ADD_CODE(&td, MINT_CONV_R8_I8);
1655                                 break;
1656                         case STACK_TYPE_R8:
1657                                 break;
1658                         default:
1659                                 g_assert_not_reached ();
1660                         }
1661                         ++td.ip;
1662                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1663                         break;
1664                 case CEE_CONV_U8:
1665                         CHECK_STACK (&td, 1);
1666                         switch (td.sp [-1].type) {
1667                         case STACK_TYPE_I4:
1668                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1669                                 break;
1670                         case STACK_TYPE_I8:
1671                                 break;
1672                         case STACK_TYPE_R8:
1673                                 ADD_CODE(&td, MINT_CONV_U8_R8);
1674                                 break;
1675                         case STACK_TYPE_MP:
1676 #if SIZEOF_VOID_P == 4
1677                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1678 #endif
1679                                 break;
1680                         default:
1681                                 g_assert_not_reached ();
1682                         }
1683                         ++td.ip;
1684                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1685                         break;
1686 #if 0
1687                 case CEE_CPOBJ: {
1688                         MonoClass *vtklass;
1689                         ++ip;
1690                         vtklass = mono_class_get_full (image, read32 (ip), generic_context);
1691                         ip += 4;
1692                         sp -= 2;
1693                         memcpy (sp [0].data.p, sp [1].data.p, mono_class_value_size (vtklass, NULL));
1694                         break;
1695                 }
1696 #endif
1697                 case CEE_LDOBJ: {
1698                         int size;
1699                         CHECK_STACK (&td, 1);
1700
1701                         token = read32 (td.ip + 1);
1702
1703                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1704                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1705                         else
1706                                 klass = mono_class_get_full (image, token, generic_context);
1707
1708                         ADD_CODE(&td, MINT_LDOBJ);
1709                         ADD_CODE(&td, get_data_item_index(&td, klass));
1710                         g_error ("data.klass");
1711                         if (klass->byval_arg.type == MONO_TYPE_VALUETYPE && !klass->byval_arg.data.klass->enumtype) {
1712                                 size = mono_class_value_size (klass, NULL);
1713                                 PUSH_VT(&td, size);
1714                         }
1715                         td.ip += 5;
1716                         SET_TYPE(td.sp - 1, stack_type[mint_type(&klass->byval_arg)], klass);
1717                         break;
1718                 }
1719                 case CEE_LDSTR: {
1720                         MonoString *s;
1721                         token = mono_metadata_token_index (read32 (td.ip + 1));
1722                         td.ip += 5;
1723                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
1724                                 s = mono_string_new_wrapper(
1725                                         mono_method_get_wrapper_data (method, token));
1726                         }
1727                         else
1728                                 s = mono_ldstr (domain, image, token);
1729                         ADD_CODE(&td, MINT_LDSTR);
1730                         ADD_CODE(&td, get_data_item_index (&td, s));
1731                         PUSH_TYPE(&td, STACK_TYPE_O, mono_defaults.string_class);
1732                         break;
1733                 }
1734                 case CEE_NEWOBJ: {
1735                         MonoMethod *m;
1736                         MonoMethodSignature *csignature;
1737                         guint32 vt_stack_used = 0;
1738                         guint32 vt_res_size = 0;
1739
1740                         td.ip++;
1741                         token = read32 (td.ip);
1742                         td.ip += 4;
1743
1744                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1745                                 m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
1746                         else
1747                                 m = mono_get_method_full (image, token, NULL, generic_context);
1748
1749                         csignature = mono_method_signature (m);
1750                         klass = m->klass;
1751                         td.sp -= csignature->param_count;
1752                         ADD_CODE(&td, MINT_NEWOBJ);
1753                         ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (domain, m, &error)));
1754                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
1755
1756                         if (mint_type (&klass->byval_arg) == MINT_TYPE_VT) {
1757                                 vt_res_size = mono_class_value_size (klass, NULL);
1758                                 PUSH_VT (&td, vt_res_size);
1759                         }
1760                         for (i = 0; i < csignature->param_count; ++i) {
1761                                 int mt = mint_type(csignature->params [i]);
1762                                 if (mt == MINT_TYPE_VT) {
1763                                         MonoClass *k = mono_class_from_mono_type (csignature->params [i]);
1764                                         gint32 size = mono_class_value_size (k, NULL);
1765                                         size = (size + 7) & ~7;
1766                                         vt_stack_used += size;
1767                                 }
1768                         }
1769                         if (vt_stack_used != 0 || vt_res_size != 0) {
1770                                 ADD_CODE(&td, MINT_VTRESULT);
1771                                 ADD_CODE(&td, vt_res_size);
1772                                 WRITE32(&td, &vt_stack_used);
1773                                 td.vt_sp -= vt_stack_used;
1774                         }
1775                         PUSH_TYPE (&td, stack_type [mint_type (&klass->byval_arg)], klass);
1776                         break;
1777                 }
1778                 case CEE_CASTCLASS:
1779                         CHECK_STACK (&td, 1);
1780                         token = read32 (td.ip + 1);
1781                         klass = mono_class_get_full (image, token, generic_context);
1782                         ADD_CODE(&td, MINT_CASTCLASS);
1783                         ADD_CODE(&td, get_data_item_index (&td, klass));
1784                         td.sp [-1].klass = klass;
1785                         td.ip += 5;
1786                         break;
1787                 case CEE_ISINST:
1788                         CHECK_STACK (&td, 1);
1789                         token = read32 (td.ip + 1);
1790                         klass = mono_class_get_full (image, token, generic_context);
1791                         ADD_CODE(&td, MINT_ISINST);
1792                         ADD_CODE(&td, get_data_item_index (&td, klass));
1793                         td.ip += 5;
1794                         break;
1795                 case CEE_CONV_R_UN:
1796                         switch (td.sp [-1].type) {
1797                         case STACK_TYPE_R8:
1798                                 break;
1799                         case STACK_TYPE_I8:
1800                                 ADD_CODE(&td, MINT_CONV_R_UN_I8);
1801                                 break;
1802                         case STACK_TYPE_I4:
1803                                 ADD_CODE(&td, MINT_CONV_R_UN_I4);
1804                                 break;
1805                         default:
1806                                 g_assert_not_reached ();
1807                         }
1808                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1809                         ++td.ip;
1810                         break;
1811                 case CEE_UNBOX:
1812                         CHECK_STACK (&td, 1);
1813                         token = read32 (td.ip + 1);
1814
1815                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1816                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1817                         else
1818                                 klass = mono_class_get_full (image, token, generic_context);
1819
1820                         if (mono_class_is_nullable (klass)) {
1821                                 g_error ("cee_unbox: implement Nullable");
1822                         }
1823
1824                         ADD_CODE(&td, MINT_UNBOX);
1825                         ADD_CODE(&td, get_data_item_index (&td, klass));
1826                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
1827                         td.ip += 5;
1828                         break;
1829                 case CEE_UNBOX_ANY:
1830                         CHECK_STACK (&td, 1);
1831                         token = read32 (td.ip + 1);
1832
1833                         g_assert (method->wrapper_type == MONO_WRAPPER_NONE);
1834                         klass = mono_class_get_full (image, token, generic_context);
1835
1836                         if (mini_type_is_reference (&klass->byval_arg)) {
1837                                 g_error ("unbox_any: generic class is reference type");
1838                         } else if (mono_class_is_nullable (klass)) {
1839                                 MonoMethod *target_method = mono_class_get_method_from_name (klass, "Unbox", 1);
1840                                 /* td.ip is incremented by interp_transform_call */
1841                                 interp_transform_call (&td, method, target_method, domain, generic_context, is_bb_start, body_start_offset);
1842                         } else {
1843                                 ADD_CODE(&td, MINT_UNBOX);
1844                                 ADD_CODE(&td, get_data_item_index (&td, klass));
1845                                 SET_SIMPLE_TYPE (td.sp - 1, stack_type [mint_type (&klass->byval_arg)]);
1846                                 td.ip += 5;
1847                         }
1848
1849                         break;
1850                 case CEE_THROW:
1851                         CHECK_STACK (&td, 1);
1852                         SIMPLE_OP (td, MINT_THROW);
1853                         --td.sp;
1854                         generating_code = 0;
1855                         break;
1856                 case CEE_LDFLDA:
1857                         CHECK_STACK (&td, 1);
1858                         token = read32 (td.ip + 1);
1859                         field = mono_field_from_token (image, token, &klass, generic_context);
1860                         mono_class_init (klass);
1861                         mt = mint_type(field->type);
1862                         ADD_CODE(&td, MINT_LDFLDA);
1863                         ADD_CODE(&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
1864                         td.ip += 5;
1865                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
1866                         break;
1867                 case CEE_LDFLD: {
1868                         CHECK_STACK (&td, 1);
1869                         token = read32 (td.ip + 1);
1870                         field = mono_field_from_token (image, token, &klass, generic_context);
1871                         mono_class_init (klass);
1872                         mt = mint_type(field->type);
1873                         if (klass->marshalbyref) {
1874                                 ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_LDRMFLD_VT :  MINT_LDRMFLD);
1875                                 ADD_CODE(&td, get_data_item_index (&td, field));
1876                         } else  {
1877                                 ADD_CODE(&td, MINT_LDFLD_I1 + mt - MINT_TYPE_I1);
1878                                 ADD_CODE(&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
1879                         }
1880                         klass = NULL;
1881                         if (mt == MINT_TYPE_VT) {
1882                                 g_error ("data.klass");
1883                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1884                                 PUSH_VT(&td, size);
1885                                 WRITE32(&td, &size);
1886                                 klass = field->type->data.klass;
1887                         } else if (mt == MINT_TYPE_O)
1888                                 klass = mono_class_from_mono_type (field->type);
1889                         td.ip += 5;
1890                         SET_TYPE(td.sp - 1, stack_type [mt], klass);
1891                         break;
1892                 }
1893                 case CEE_STFLD:
1894                         CHECK_STACK (&td, 2);
1895                         token = read32 (td.ip + 1);
1896                         field = mono_field_from_token (image, token, &klass, generic_context);
1897                         mono_class_init (klass);
1898                         mt = mint_type(field->type);
1899                         if (klass->marshalbyref) {
1900                                 ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_STRMFLD_VT : MINT_STRMFLD);
1901                                 ADD_CODE(&td, get_data_item_index (&td, field));
1902                         } else  {
1903                                 ADD_CODE(&td, MINT_STFLD_I1 + mt - MINT_TYPE_I1);
1904                                 ADD_CODE(&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
1905                         }
1906                         if (mt == MINT_TYPE_VT) {
1907                                 g_error ("data.klass");
1908                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1909                                 POP_VT(&td, size);
1910                                 WRITE32(&td, &size);
1911                         }
1912                         td.ip += 5;
1913                         td.sp -= 2;
1914                         break;
1915                 case CEE_LDSFLDA:
1916                         token = read32 (td.ip + 1);
1917                         field = mono_field_from_token (image, token, &klass, generic_context);
1918                         ADD_CODE(&td, MINT_LDSFLDA);
1919                         ADD_CODE(&td, get_data_item_index (&td, field));
1920                         td.ip += 5;
1921                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
1922                         break;
1923                 case CEE_LDSFLD:
1924                         token = read32 (td.ip + 1);
1925                         field = mono_field_from_token (image, token, &klass, generic_context);
1926                         mt = mint_type(field->type);
1927                         ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_LDSFLD_VT : MINT_LDSFLD);
1928                         ADD_CODE(&td, get_data_item_index (&td, field));
1929                         klass = NULL;
1930                         if (mt == MINT_TYPE_VT) {
1931                                 g_error ("data.klass");
1932                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1933                                 PUSH_VT(&td, size);
1934                                 WRITE32(&td, &size);
1935                                 klass = field->type->data.klass;
1936                         } else {
1937                                 if (mt == MINT_TYPE_O)
1938                                         klass = mono_class_from_mono_type (field->type);
1939                                 if (!domain->special_static_fields || !g_hash_table_lookup (domain->special_static_fields, field)) {
1940                                         if (mt == MINT_TYPE_O)
1941                                                 td.new_ip [-2] = MINT_LDSFLD_O;
1942                                         else if (mt == MINT_TYPE_I4)
1943                                                 td.new_ip [-2] = MINT_LDSFLD_I4;
1944                                 }
1945                                 ADD_CODE(&td, get_data_item_index (&td, mono_class_vtable (domain, field->parent)));
1946                         }
1947                         td.ip += 5;
1948                         PUSH_TYPE(&td, stack_type [mt], klass);
1949                         break;
1950                 case CEE_STSFLD:
1951                         CHECK_STACK (&td, 1);
1952                         token = read32 (td.ip + 1);
1953                         field = mono_field_from_token (image, token, &klass, generic_context);
1954                         mt = mint_type(field->type);
1955                         ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_STSFLD_VT : MINT_STSFLD);
1956                         ADD_CODE(&td, get_data_item_index (&td, field));
1957                         if (mt == MINT_TYPE_VT) {
1958                                 g_error ("data.klass");
1959                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1960                                 POP_VT(&td, size);
1961                                 WRITE32(&td, &size);
1962                         }
1963                         td.ip += 5;
1964                         --td.sp;
1965                         break;
1966                 case CEE_STOBJ: {
1967                         int size;
1968                         token = read32 (td.ip + 1);
1969
1970                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1971                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1972                         else
1973                                 klass = mono_class_get_full (image, token, generic_context);
1974
1975                         ADD_CODE(&td, td.sp [-1].type == STACK_TYPE_VT ? MINT_STOBJ_VT : MINT_STOBJ);
1976                         ADD_CODE(&td, get_data_item_index (&td, klass));
1977                         if (td.sp [-1].type == STACK_TYPE_VT) {
1978                                 size = mono_class_value_size (klass, NULL);
1979                                 size = (size + 7) & ~7;
1980                                 td.vt_sp -= size;
1981                         }
1982                         td.ip += 5;
1983                         td.sp -= 2;
1984                         break;
1985                 }
1986                 case CEE_CONV_OVF_I_UN:
1987                         CHECK_STACK (&td, 1);
1988                         switch (td.sp [-1].type) {
1989                         case STACK_TYPE_R8:
1990 #if SIZEOF_VOID_P == 8
1991                                 ADD_CODE(&td, MINT_CONV_OVF_I8_UN_R8);
1992 #else
1993                                 ADD_CODE(&td, MINT_CONV_OVF_I4_UN_R8);
1994 #endif
1995                                 break;
1996                         case STACK_TYPE_I8:
1997                                 /*FIX*/
1998                                 break;
1999                         case STACK_TYPE_I4:
2000 #if SIZEOF_VOID_P == 8
2001                                 ADD_CODE(&td, MINT_CONV_I8_U4);
2002 #endif
2003                                 break;
2004                         default:
2005                                 g_assert_not_reached ();
2006                                 break;
2007                         }
2008                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2009                         ++td.ip;
2010                         break;
2011                 case CEE_CONV_OVF_I8_UN:
2012                         CHECK_STACK (&td, 1);
2013                         switch (td.sp [-1].type) {
2014                         case STACK_TYPE_R8:
2015                                 ADD_CODE(&td, MINT_CONV_OVF_I8_UN_R8);
2016                                 break;
2017                         case STACK_TYPE_I8:
2018                                 break;
2019                         case STACK_TYPE_I4:
2020                                 ADD_CODE(&td, MINT_CONV_I8_U4);
2021                                 break;
2022                         default:
2023                                 g_assert_not_reached ();
2024                                 break;
2025                         }
2026                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2027                         ++td.ip;
2028                         break;
2029                 case CEE_BOX: {
2030                         int size;
2031                         CHECK_STACK (&td, 1);
2032                         token = read32 (td.ip + 1);
2033                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2034                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2035                         else
2036                                 klass = mono_class_get_full (image, token, generic_context);
2037                         g_assert (klass->valuetype);
2038
2039                         if (mono_class_is_nullable (klass)) {
2040                                 MonoMethod *target_method = mono_class_get_method_from_name (klass, "Box", 1);
2041                                 /* td.ip is incremented by interp_transform_call */
2042                                 interp_transform_call (&td, method, target_method, domain, generic_context, is_bb_start, body_start_offset);
2043                         } else {
2044                                 if (klass->byval_arg.type == MONO_TYPE_VALUETYPE && !klass->enumtype) {
2045                                         size = mono_class_value_size (klass, NULL);
2046                                         size = (size + 7) & ~7;
2047                                         td.vt_sp -= size;
2048                                 }
2049                                 ADD_CODE(&td, MINT_BOX);
2050                                 ADD_CODE(&td, get_data_item_index (&td, klass));
2051                                 SET_TYPE(td.sp - 1, STACK_TYPE_O, klass);
2052                                 td.ip += 5;
2053                         }
2054
2055                         break;
2056                 }
2057                 case CEE_NEWARR:
2058                         CHECK_STACK (&td, 1);
2059                         token = read32 (td.ip + 1);
2060
2061                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2062                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2063                         else
2064                                 klass = mono_class_get_full (image, token, generic_context);
2065
2066                         ADD_CODE(&td, MINT_NEWARR);
2067                         ADD_CODE(&td, get_data_item_index (&td, klass));
2068                         SET_TYPE(td.sp - 1, STACK_TYPE_O, klass);
2069                         td.ip += 5;
2070                         break;
2071                 case CEE_LDLEN:
2072                         CHECK_STACK (&td, 1);
2073                         SIMPLE_OP (td, MINT_LDLEN);
2074                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2075                         break;
2076                 case CEE_LDELEMA:
2077                         CHECK_STACK (&td, 2);
2078                         ENSURE_I4 (&td, 1);
2079                         token = read32 (td.ip + 1);
2080
2081                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2082                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2083                         else
2084                                 klass = mono_class_get_full (image, token, generic_context);
2085
2086                         ADD_CODE(&td, MINT_LDELEMA);
2087                         ADD_CODE(&td, get_data_item_index (&td, klass));
2088                         td.ip += 5;
2089                         --td.sp;
2090                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2091                         break;
2092                 case CEE_LDELEM_I1:
2093                         CHECK_STACK (&td, 2);
2094                         ENSURE_I4 (&td, 1);
2095                         SIMPLE_OP (td, MINT_LDELEM_I1);
2096                         --td.sp;
2097                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2098                         break;
2099                 case CEE_LDELEM_U1:
2100                         CHECK_STACK (&td, 2);
2101                         ENSURE_I4 (&td, 1);
2102                         SIMPLE_OP (td, MINT_LDELEM_U1);
2103                         --td.sp;
2104                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2105                         break;
2106                 case CEE_LDELEM_I2:
2107                         CHECK_STACK (&td, 2);
2108                         ENSURE_I4 (&td, 1);
2109                         SIMPLE_OP (td, MINT_LDELEM_I2);
2110                         --td.sp;
2111                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2112                         break;
2113                 case CEE_LDELEM_U2:
2114                         CHECK_STACK (&td, 2);
2115                         ENSURE_I4 (&td, 1);
2116                         SIMPLE_OP (td, MINT_LDELEM_U2);
2117                         --td.sp;
2118                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2119                         break;
2120                 case CEE_LDELEM_I4:
2121                         CHECK_STACK (&td, 2);
2122                         ENSURE_I4 (&td, 1);
2123                         SIMPLE_OP (td, MINT_LDELEM_I4);
2124                         --td.sp;
2125                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2126                         break;
2127                 case CEE_LDELEM_U4:
2128                         CHECK_STACK (&td, 2);
2129                         ENSURE_I4 (&td, 1);
2130                         SIMPLE_OP (td, MINT_LDELEM_U4);
2131                         --td.sp;
2132                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2133                         break;
2134                 case CEE_LDELEM_I8:
2135                         CHECK_STACK (&td, 2);
2136                         ENSURE_I4 (&td, 1);
2137                         SIMPLE_OP (td, MINT_LDELEM_I8);
2138                         --td.sp;
2139                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2140                         break;
2141                 case CEE_LDELEM_I:
2142                         CHECK_STACK (&td, 2);
2143                         ENSURE_I4 (&td, 1);
2144                         SIMPLE_OP (td, MINT_LDELEM_I);
2145                         --td.sp;
2146                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2147                         break;
2148                 case CEE_LDELEM_R4:
2149                         CHECK_STACK (&td, 2);
2150                         ENSURE_I4 (&td, 1);
2151                         SIMPLE_OP (td, MINT_LDELEM_R4);
2152                         --td.sp;
2153                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2154                         break;
2155                 case CEE_LDELEM_R8:
2156                         CHECK_STACK (&td, 2);
2157                         ENSURE_I4 (&td, 1);
2158                         SIMPLE_OP (td, MINT_LDELEM_R8);
2159                         --td.sp;
2160                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2161                         break;
2162                 case CEE_LDELEM_REF:
2163                         CHECK_STACK (&td, 2);
2164                         ENSURE_I4 (&td, 1);
2165                         SIMPLE_OP (td, MINT_LDELEM_REF);
2166                         --td.sp;
2167                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
2168                         break;
2169                 case CEE_STELEM_I:
2170                         CHECK_STACK (&td, 3);
2171                         ENSURE_I4 (&td, 2);
2172                         SIMPLE_OP (td, MINT_STELEM_I);
2173                         td.sp -= 3;
2174                         break;
2175                 case CEE_STELEM_I1:
2176                         CHECK_STACK (&td, 3);
2177                         ENSURE_I4 (&td, 2);
2178                         SIMPLE_OP (td, MINT_STELEM_I1);
2179                         td.sp -= 3;
2180                         break;
2181                 case CEE_STELEM_I2:
2182                         CHECK_STACK (&td, 3);
2183                         ENSURE_I4 (&td, 2);
2184                         SIMPLE_OP (td, MINT_STELEM_I2);
2185                         td.sp -= 3;
2186                         break;
2187                 case CEE_STELEM_I4:
2188                         CHECK_STACK (&td, 3);
2189                         ENSURE_I4 (&td, 2);
2190                         SIMPLE_OP (td, MINT_STELEM_I4);
2191                         td.sp -= 3;
2192                         break;
2193                 case CEE_STELEM_I8:
2194                         CHECK_STACK (&td, 3);
2195                         ENSURE_I4 (&td, 2);
2196                         SIMPLE_OP (td, MINT_STELEM_I8);
2197                         td.sp -= 3;
2198                         break;
2199                 case CEE_STELEM_R4:
2200                         CHECK_STACK (&td, 3);
2201                         ENSURE_I4 (&td, 2);
2202                         SIMPLE_OP (td, MINT_STELEM_R4);
2203                         td.sp -= 3;
2204                         break;
2205                 case CEE_STELEM_R8:
2206                         CHECK_STACK (&td, 3);
2207                         ENSURE_I4 (&td, 2);
2208                         SIMPLE_OP (td, MINT_STELEM_R8);
2209                         td.sp -= 3;
2210                         break;
2211                 case CEE_STELEM_REF:
2212                         CHECK_STACK (&td, 3);
2213                         ENSURE_I4 (&td, 2);
2214                         SIMPLE_OP (td, MINT_STELEM_REF);
2215                         td.sp -= 3;
2216                         break;
2217 #if 0
2218                 case CEE_LDELEM:
2219                 case CEE_STELEM:
2220
2221                 case CEE_CONV_OVF_U1:
2222
2223                 case CEE_CONV_OVF_I8:
2224
2225 #if SIZEOF_VOID_P == 8
2226                 case CEE_CONV_OVF_U:
2227 #endif
2228                 case CEE_REFANYVAL: ves_abort(); break;
2229 #endif
2230                 case CEE_CKFINITE:
2231                         CHECK_STACK (&td, 1);
2232                         SIMPLE_OP (td, MINT_CKFINITE);
2233                         break;
2234                 case CEE_CONV_OVF_I1:
2235                 case CEE_CONV_OVF_I1_UN:
2236                         CHECK_STACK (&td, 1);
2237                         switch (td.sp [-1].type) {
2238                         case STACK_TYPE_R8:
2239                                 ADD_CODE(&td, MINT_CONV_OVF_I1_R8);
2240                                 break;
2241                         case STACK_TYPE_I4:
2242                                 ADD_CODE(&td, MINT_CONV_OVF_I1_I4);
2243                                 break;
2244                         case STACK_TYPE_I8:
2245                                 ADD_CODE(&td, MINT_CONV_OVF_I1_I8);
2246                                 break;
2247                         default:
2248                                 g_assert_not_reached ();
2249                         }
2250                         ++td.ip;
2251                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2252                         break;
2253                 case CEE_CONV_OVF_U1:
2254                 case CEE_CONV_OVF_U1_UN:
2255                         CHECK_STACK (&td, 1);
2256                         switch (td.sp [-1].type) {
2257                         case STACK_TYPE_R8:
2258                                 ADD_CODE(&td, MINT_CONV_OVF_U1_R8);
2259                                 break;
2260                         case STACK_TYPE_I4:
2261                                 ADD_CODE(&td, MINT_CONV_OVF_U1_I4);
2262                                 break;
2263                         case STACK_TYPE_I8:
2264                                 ADD_CODE(&td, MINT_CONV_OVF_U1_I8);
2265                                 break;
2266                         default:
2267                                 g_assert_not_reached ();
2268                         }
2269                         ++td.ip;
2270                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2271                         break;
2272                 case CEE_CONV_OVF_I2:
2273                 case CEE_CONV_OVF_I2_UN:
2274                         CHECK_STACK (&td, 1);
2275                         switch (td.sp [-1].type) {
2276                         case STACK_TYPE_R8:
2277                                 ADD_CODE(&td, MINT_CONV_OVF_I2_R8);
2278                                 break;
2279                         case STACK_TYPE_I4:
2280                                 ADD_CODE(&td, MINT_CONV_OVF_I2_I4);
2281                                 break;
2282                         case STACK_TYPE_I8:
2283                                 ADD_CODE(&td, MINT_CONV_OVF_I2_I8);
2284                                 break;
2285                         default:
2286                                 g_assert_not_reached ();
2287                         }
2288                         ++td.ip;
2289                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2290                         break;
2291                 case CEE_CONV_OVF_U2_UN:
2292                 case CEE_CONV_OVF_U2:
2293                         CHECK_STACK (&td, 1);
2294                         switch (td.sp [-1].type) {
2295                         case STACK_TYPE_R8:
2296                                 ADD_CODE(&td, MINT_CONV_OVF_U2_R8);
2297                                 break;
2298                         case STACK_TYPE_I4:
2299                                 ADD_CODE(&td, MINT_CONV_OVF_U2_I4);
2300                                 break;
2301                         case STACK_TYPE_I8:
2302                                 ADD_CODE(&td, MINT_CONV_OVF_U2_I8);
2303                                 break;
2304                         default:
2305                                 g_assert_not_reached ();
2306                         }
2307                         ++td.ip;
2308                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2309                         break;
2310 #if SIZEOF_VOID_P == 4
2311                 case CEE_CONV_OVF_I:
2312 #endif
2313                 case CEE_CONV_OVF_I4:
2314                 case CEE_CONV_OVF_I4_UN:
2315                         CHECK_STACK (&td, 1);
2316                         switch (td.sp [-1].type) {
2317                         case STACK_TYPE_R8:
2318                                 ADD_CODE(&td, MINT_CONV_OVF_I4_R8);
2319                                 break;
2320                         case STACK_TYPE_I4:
2321                                 if (*td.ip == CEE_CONV_OVF_I4_UN)
2322                                         ADD_CODE(&td, MINT_CONV_OVF_I4_U4);
2323                                 break;
2324                         case STACK_TYPE_I8:
2325                                 ADD_CODE(&td, MINT_CONV_OVF_I4_I8);
2326                                 break;
2327                         default:
2328                                 g_assert_not_reached ();
2329                         }
2330                         ++td.ip;
2331                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2332                         break;
2333 #if SIZEOF_VOID_P == 4
2334                 case CEE_CONV_OVF_U:
2335 #endif
2336                 case CEE_CONV_OVF_U4:
2337                 case CEE_CONV_OVF_U4_UN:
2338                         CHECK_STACK (&td, 1);
2339                         switch (td.sp [-1].type) {
2340                         case STACK_TYPE_R8:
2341                                 ADD_CODE(&td, MINT_CONV_OVF_U4_R8);
2342                                 break;
2343                         case STACK_TYPE_I4:
2344                                 if (*td.ip != CEE_CONV_OVF_U4_UN)
2345                                         ADD_CODE(&td, MINT_CONV_OVF_U4_I4);
2346                                 break;
2347                         case STACK_TYPE_I8:
2348                                 ADD_CODE(&td, MINT_CONV_OVF_U4_I8);
2349                                 break;
2350                         default:
2351                                 g_assert_not_reached ();
2352                         }
2353                         ++td.ip;
2354                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2355                         break;
2356 #if SIZEOF_VOID_P == 8
2357                 case CEE_CONV_OVF_I:
2358 #endif
2359                 case CEE_CONV_OVF_I8:
2360                         CHECK_STACK (&td, 1);
2361                         switch (td.sp [-1].type) {
2362                         case STACK_TYPE_R8:
2363                                 ADD_CODE(&td, MINT_CONV_OVF_I8_R8);
2364                                 break;
2365                         case STACK_TYPE_I4:
2366                                 ADD_CODE(&td, MINT_CONV_I8_I4);
2367                                 break;
2368                         case STACK_TYPE_I8:
2369                                 break;
2370                         default:
2371                                 g_assert_not_reached ();
2372                         }
2373                         ++td.ip;
2374                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2375                         break;
2376 #if SIZEOF_VOID_P == 8
2377                 case CEE_CONV_OVF_U:
2378 #endif
2379                 case CEE_CONV_OVF_U8:
2380                         CHECK_STACK (&td, 1);
2381                         switch (td.sp [-1].type) {
2382                         case STACK_TYPE_R8:
2383                                 ADD_CODE(&td, MINT_CONV_OVF_U8_R8);
2384                                 break;
2385                         case STACK_TYPE_I4:
2386                                 ADD_CODE(&td, MINT_CONV_OVF_U8_I4);
2387                                 break;
2388                         case STACK_TYPE_I8:
2389                                 break;
2390                         default:
2391                                 g_assert_not_reached ();
2392                         }
2393                         ++td.ip;
2394                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2395                         break;
2396                 case CEE_LDTOKEN: {
2397                         int size;
2398                         gpointer handle;
2399                         token = read32 (td.ip + 1);
2400                         handle = mono_ldtoken (image, token, &klass, generic_context);
2401                         mt = mint_type(&klass->byval_arg);
2402                         g_assert (mt == MINT_TYPE_VT);
2403                         size = mono_class_value_size (klass, NULL);
2404                         g_assert (size == sizeof(gpointer));
2405                         PUSH_VT(&td, sizeof(gpointer));
2406                         ADD_CODE(&td, MINT_LDTOKEN);
2407                         ADD_CODE(&td, get_data_item_index (&td, handle));
2408                         PUSH_SIMPLE_TYPE(&td, stack_type [mt]);
2409                         td.ip += 5;
2410                         break;
2411                 }
2412                 case CEE_ADD_OVF:
2413                         binary_arith_op(&td, MINT_ADD_OVF_I4);
2414                         ++td.ip;
2415                         break;
2416                 case CEE_ADD_OVF_UN:
2417                         binary_arith_op(&td, MINT_ADD_OVF_UN_I4);
2418                         ++td.ip;
2419                         break;
2420                 case CEE_MUL_OVF:
2421                         binary_arith_op(&td, MINT_MUL_OVF_I4);
2422                         ++td.ip;
2423                         break;
2424                 case CEE_MUL_OVF_UN:
2425                         binary_arith_op(&td, MINT_MUL_OVF_UN_I4);
2426                         ++td.ip;
2427                         break;
2428                 case CEE_SUB_OVF:
2429                         binary_arith_op(&td, MINT_SUB_OVF_I4);
2430                         ++td.ip;
2431                         break;
2432                 case CEE_SUB_OVF_UN:
2433                         binary_arith_op(&td, MINT_SUB_OVF_UN_I4);
2434                         ++td.ip;
2435                         break;
2436                 case CEE_ENDFINALLY:
2437                         SIMPLE_OP (td, MINT_ENDFINALLY);
2438                         generating_code = 0;
2439                         break;
2440                 case CEE_LEAVE:
2441                         td.sp = td.stack;
2442                         handle_branch (&td, MINT_LEAVE_S, MINT_LEAVE, 5 + read32 (td.ip + 1));
2443                         td.ip += 5;
2444                         generating_code = 0;
2445                         break;
2446                 case CEE_LEAVE_S:
2447                         td.sp = td.stack;
2448                         handle_branch (&td, MINT_LEAVE_S, MINT_LEAVE, 2 + (gint8)td.ip [1]);
2449                         td.ip += 2;
2450                         generating_code = 0;
2451                         break;
2452                 case CEE_UNUSED41:
2453                         ++td.ip;
2454                         switch (*td.ip) {
2455                                 case CEE_MONO_CALLI_EXTRA_ARG:
2456                                         /* Same as CEE_CALLI, llvm specific */
2457                                         interp_transform_call (&td, method, NULL, domain, generic_context, is_bb_start, body_start_offset);
2458                                         break;
2459                                 case CEE_MONO_ICALL: {
2460                                         guint32 token;
2461                                         gpointer func;
2462                                         MonoJitICallInfo *info;
2463
2464                                         token = read32 (td.ip + 1);
2465                                         td.ip += 5;
2466                                         func = mono_method_get_wrapper_data (method, token);
2467                                         info = mono_find_jit_icall_by_addr (func);
2468                                         g_assert (info);
2469
2470                                         CHECK_STACK (&td, info->sig->param_count);
2471                                         switch (info->sig->param_count) {
2472                                         case 0:
2473                                                 if (MONO_TYPE_IS_VOID (info->sig->ret))
2474                                                         ADD_CODE (&td,MINT_ICALL_V_V);
2475                                                 else
2476                                                         ADD_CODE (&td, MINT_ICALL_V_P);
2477                                                 break;
2478                                         case 1:
2479                                                 if (MONO_TYPE_IS_VOID (info->sig->ret))
2480                                                         ADD_CODE (&td,MINT_ICALL_P_V);
2481                                                 else
2482                                                         ADD_CODE (&td,MINT_ICALL_P_P);
2483                                                 break;
2484                                         case 2:
2485                                                 if (MONO_TYPE_IS_VOID (info->sig->ret)) {
2486                                                         if (info->sig->params [1]->type == MONO_TYPE_I4)
2487                                                                 ADD_CODE (&td,MINT_ICALL_PI_V);
2488                                                         else
2489                                                                 ADD_CODE (&td,MINT_ICALL_PP_V);
2490                                                 } else {
2491                                                         if (info->sig->params [1]->type == MONO_TYPE_I4)
2492                                                                 ADD_CODE (&td,MINT_ICALL_PI_P);
2493                                                         else
2494                                                                 ADD_CODE (&td,MINT_ICALL_PP_P);
2495                                                 }
2496                                                 break;
2497                                         case 3:
2498                                                 g_assert (MONO_TYPE_IS_VOID (info->sig->ret));
2499                                                 if (info->sig->params [2]->type == MONO_TYPE_I4)
2500                                                         ADD_CODE (&td,MINT_ICALL_PPI_V);
2501                                                 else
2502                                                         ADD_CODE (&td,MINT_ICALL_PPP_V);
2503                                                 break;
2504                                         default:
2505                                                 g_assert_not_reached ();
2506                                         }
2507
2508                                         if (func == mono_ftnptr_to_delegate) {
2509                                                 g_error ("TODO: ?");
2510                                                 func = mono_interp_ftnptr_to_delegate;
2511                                         }
2512                                         ADD_CODE(&td, get_data_item_index (&td, func));
2513                                         td.sp -= info->sig->param_count;
2514
2515                                         if (!MONO_TYPE_IS_VOID (info->sig->ret)) {
2516                                                 td.sp ++;
2517                                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2518                                         }
2519                                         break;
2520                                 }
2521                         case CEE_MONO_VTADDR: {
2522                                 int size;
2523                                 CHECK_STACK (&td, 1);
2524                                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE)
2525                                         size = mono_class_native_size(td.sp [-1].klass, NULL);
2526                                 else
2527                                         size = mono_class_value_size(td.sp [-1].klass, NULL);
2528                                 size = (size + 7) & ~7;
2529                                 ADD_CODE(&td, MINT_VTRESULT);
2530                                 ADD_CODE(&td, 0);
2531                                 WRITE32(&td, &size);
2532                                 td.vt_sp -= size;
2533                                 ++td.ip;
2534                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2535                                 break;
2536                         }
2537                         case CEE_MONO_LDPTR:
2538                         case CEE_MONO_CLASSCONST:
2539                                 token = read32 (td.ip + 1);
2540                                 td.ip += 5;
2541                                 ADD_CODE(&td, MINT_MONO_LDPTR);
2542                                 ADD_CODE(&td, get_data_item_index (&td, mono_method_get_wrapper_data (method, token)));
2543                                 td.sp [0].type = STACK_TYPE_I;
2544                                 ++td.sp;
2545                                 break;
2546                         case CEE_MONO_OBJADDR:
2547                                 CHECK_STACK (&td, 1);
2548                                 ++td.ip;
2549                                 td.sp[-1].type = STACK_TYPE_MP;
2550                                 /* do nothing? */
2551                                 break;
2552                         case CEE_MONO_NEWOBJ:
2553                                 token = read32 (td.ip + 1);
2554                                 td.ip += 5;
2555                                 ADD_CODE(&td, MINT_MONO_NEWOBJ);
2556                                 ADD_CODE(&td, get_data_item_index (&td, mono_method_get_wrapper_data (method, token)));
2557                                 td.sp [0].type = STACK_TYPE_O;
2558                                 ++td.sp;
2559                                 break;
2560                         case CEE_MONO_RETOBJ:
2561                                 CHECK_STACK (&td, 1);
2562                                 token = read32 (td.ip + 1);
2563                                 td.ip += 5;
2564                                 ADD_CODE(&td, MINT_MONO_RETOBJ);
2565                                 td.sp--;
2566
2567                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2568
2569                                 /*stackval_from_data (signature->ret, frame->retval, sp->data.vt, signature->pinvoke);*/
2570
2571                                 if (td.sp > td.stack)
2572                                         g_warning ("CEE_MONO_RETOBJ: more values on stack: %d", td.sp-td.stack);
2573                                 break;
2574                         case CEE_MONO_LDNATIVEOBJ:
2575                                 token = read32 (td.ip + 1);
2576                                 td.ip += 5;
2577                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2578                                 g_assert(klass->valuetype);
2579                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2580                                 break;
2581                         case CEE_MONO_SAVE_LMF:
2582                         case CEE_MONO_RESTORE_LMF:
2583                         case CEE_MONO_NOT_TAKEN:
2584                                 ++td.ip;
2585                                 break;
2586                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
2587                                 ADD_CODE (&td, MINT_MONO_LDPTR);
2588                                 ADD_CODE (&td, get_data_item_index (&td, mono_thread_interruption_request_flag ()));
2589                                 PUSH_TYPE (&td, STACK_TYPE_MP, NULL);
2590                                 ++td.ip;
2591                                 break;
2592                         default:
2593                                 g_error ("transform.c: Unimplemented opcode: 0xF0 %02x at 0x%x\n", *td.ip, td.ip-header->code);
2594                         }
2595                         break;
2596 #if 0
2597                 case CEE_PREFIX7:
2598                 case CEE_PREFIX6:
2599                 case CEE_PREFIX5:
2600                 case CEE_PREFIX4:
2601                 case CEE_PREFIX3:
2602                 case CEE_PREFIX2:
2603                 case CEE_PREFIXREF: ves_abort(); break;
2604 #endif
2605                 /*
2606                  * Note: Exceptions thrown when executing a prefixed opcode need
2607                  * to take into account the number of prefix bytes (usually the
2608                  * throw point is just (ip - n_prefix_bytes).
2609                  */
2610                 case CEE_PREFIX1:
2611                         ++td.ip;
2612                         switch (*td.ip) {
2613 #if 0
2614                         case CEE_ARGLIST: ves_abort(); break;
2615 #endif
2616                         case CEE_CEQ:
2617                                 CHECK_STACK(&td, 2);
2618                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2619                                         ADD_CODE(&td, MINT_CEQ_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2620                                 else
2621                                         ADD_CODE(&td, MINT_CEQ_I4 + td.sp [-1].type - STACK_TYPE_I4);
2622                                 --td.sp;
2623                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2624                                 ++td.ip;
2625                                 break;
2626                         case CEE_CGT:
2627                                 CHECK_STACK(&td, 2);
2628                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2629                                         ADD_CODE(&td, MINT_CGT_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2630                                 else
2631                                         ADD_CODE(&td, MINT_CGT_I4 + td.sp [-1].type - STACK_TYPE_I4);
2632                                 --td.sp;
2633                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2634                                 ++td.ip;
2635                                 break;
2636                         case CEE_CGT_UN:
2637                                 CHECK_STACK(&td, 2);
2638                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2639                                         ADD_CODE(&td, MINT_CGT_UN_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2640                                 else
2641                                         ADD_CODE(&td, MINT_CGT_UN_I4 + td.sp [-1].type - STACK_TYPE_I4);
2642                                 --td.sp;
2643                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2644                                 ++td.ip;
2645                                 break;
2646                         case CEE_CLT:
2647                                 CHECK_STACK(&td, 2);
2648                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2649                                         ADD_CODE(&td, MINT_CLT_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2650                                 else
2651                                         ADD_CODE(&td, MINT_CLT_I4 + td.sp [-1].type - STACK_TYPE_I4);
2652                                 --td.sp;
2653                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2654                                 ++td.ip;
2655                                 break;
2656                         case CEE_CLT_UN:
2657                                 CHECK_STACK(&td, 2);
2658                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2659                                         ADD_CODE(&td, MINT_CLT_UN_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2660                                 else
2661                                         ADD_CODE(&td, MINT_CLT_UN_I4 + td.sp [-1].type - STACK_TYPE_I4);
2662                                 --td.sp;
2663                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2664                                 ++td.ip;
2665                                 break;
2666                         case CEE_LDVIRTFTN: /* fallthrough */
2667                         case CEE_LDFTN: {
2668                                 MonoMethod *m;
2669                                 if (*td.ip == CEE_LDVIRTFTN) {
2670                                         CHECK_STACK (&td, 1);
2671                                         --td.sp;
2672                                 }
2673                                 token = read32 (td.ip + 1);
2674                                 if (method->wrapper_type != MONO_WRAPPER_NONE)
2675                                         m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
2676                                 else
2677                                         m = mono_get_method_full (image, token, NULL, generic_context);
2678
2679                                 if (method->wrapper_type == MONO_WRAPPER_NONE && m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
2680                                         m = mono_marshal_get_synchronized_wrapper (m);
2681
2682                                 ADD_CODE(&td, *td.ip == CEE_LDFTN ? MINT_LDFTN : MINT_LDVIRTFTN);
2683                                 ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (domain, m, &error)));
2684                                 mono_error_cleanup (&error); /* FIXME: don't swallow the error */
2685                                 td.ip += 5;
2686                                 PUSH_SIMPLE_TYPE (&td, STACK_TYPE_F);
2687                                 break;
2688                         }
2689                         case CEE_LDARG:
2690                                 load_arg (&td, read16 (td.ip + 1));
2691                                 td.ip += 3;
2692                                 break;
2693                         case CEE_LDARGA: {
2694                                 int n = read16 (td.ip + 1);
2695                                 if (n == 0 && signature->hasthis)
2696                                         ADD_CODE(&td, MINT_LDTHISA);
2697                                 else {
2698                                         ADD_CODE(&td, MINT_LDARGA);
2699                                         ADD_CODE(&td, td.rtm->arg_offsets [n - signature->hasthis]); /* FIX for large offsets */
2700                                 }
2701                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
2702                                 td.ip += 3;
2703                                 break;
2704                         }
2705                         case CEE_STARG:
2706                                 store_arg (&td, read16 (td.ip + 1));
2707                                 td.ip += 3;
2708                                 break;
2709                         case CEE_LDLOC:
2710                                 load_local (&td, read16 (td.ip + 1));
2711                                 td.ip += 3;
2712                                 break;
2713                         case CEE_LDLOCA:
2714                                 ADD_CODE(&td, MINT_LDLOCA_S);
2715                                 ADD_CODE(&td, td.rtm->local_offsets [read16 (td.ip + 1)]);
2716                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
2717                                 td.ip += 3;
2718                                 break;
2719                         case CEE_STLOC:
2720                                 store_local (&td, read16 (td.ip + 1));
2721                                 td.ip += 3;
2722                                 break;
2723                         case CEE_LOCALLOC:
2724                                 CHECK_STACK (&td, 1);
2725 #if SIZEOF_VOID_P == 8
2726                                 if (td.sp [-1].type == STACK_TYPE_I8)
2727                                         ADD_CODE(&td, MINT_CONV_I4_I8);
2728 #endif
2729                                 ADD_CODE(&td, MINT_LOCALLOC);
2730                                 if (td.sp != td.stack + 1)
2731                                         g_warning("CEE_LOCALLOC: stack not empty");
2732                                 ++td.ip;
2733                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2734                                 break;
2735 #if 0
2736                         case CEE_UNUSED57: ves_abort(); break;
2737                         case CEE_ENDFILTER: ves_abort(); break;
2738 #endif
2739                         case CEE_UNALIGNED_:
2740                                 ++td.ip;
2741                                 /* FIX: should do something? */;
2742                                 break;
2743                         case CEE_VOLATILE_:
2744                                 ++td.ip;
2745                                 /* FIX: should do something? */;
2746                                 break;
2747                         case CEE_TAIL_:
2748                                 ++td.ip;
2749                                 /* FIX: should do something? */;
2750                                 break;
2751                         case CEE_INITOBJ:
2752                                 CHECK_STACK(&td, 1);
2753                                 token = read32 (td.ip + 1);
2754                                 klass = mono_class_get_full (image, token, generic_context);
2755                                 ADD_CODE(&td, MINT_INITOBJ);
2756                                 i32 = mono_class_value_size (klass, NULL);
2757                                 WRITE32(&td, &i32);
2758                                 td.ip += 5;
2759                                 --td.sp;
2760                                 break;
2761                         case CEE_CPBLK:
2762                                 CHECK_STACK(&td, 3);
2763                                 /* FIX? convert length to I8? */
2764                                 ADD_CODE(&td, MINT_CPBLK);
2765                                 td.sp -= 3;
2766                                 ++td.ip;
2767                                 break;
2768 #if 0
2769                         case CEE_CONSTRAINED_: {
2770                                 guint32 token;
2771                                 /* FIXME: implement */
2772                                 ++ip;
2773                                 token = read32 (ip);
2774                                 ip += 4;
2775                                 break;
2776                         }
2777 #endif
2778                         case CEE_INITBLK:
2779                                 CHECK_STACK(&td, 3);
2780                                 ADD_CODE(&td, MINT_INITBLK);
2781                                 td.sp -= 3;
2782                                 break;
2783 #if 0
2784                         case CEE_NO_:
2785                                 /* FIXME: implement */
2786                                 ip += 2;
2787                                 break;
2788 #endif
2789                         case CEE_RETHROW:
2790                                 SIMPLE_OP (td, MINT_RETHROW);
2791                                 generating_code = 0;
2792                                 break;
2793                         case CEE_SIZEOF: {
2794                                 gint32 size;
2795                                 token = read32 (td.ip + 1);
2796                                 td.ip += 5;
2797                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
2798                                         int align;
2799                                         MonoType *type = mono_type_create_from_typespec (image, token);
2800                                         size = mono_type_size (type, &align);
2801                                 } else {
2802                                         guint32 align;
2803                                         MonoClass *szclass = mono_class_get_full (image, token, generic_context);
2804                                         mono_class_init (szclass);
2805 #if 0
2806                                         if (!szclass->valuetype)
2807                                                 THROW_EX (mono_exception_from_name (mono_defaults.corlib, "System", "InvalidProgramException"), ip - 5);
2808 #endif
2809                                         size = mono_class_value_size (szclass, &align);
2810                                 }
2811                                 ADD_CODE(&td, MINT_LDC_I4);
2812                                 WRITE32(&td, &size);
2813                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
2814                                 break;
2815                         }
2816 #if 0
2817                         case CEE_REFANYTYPE: ves_abort(); break;
2818 #endif
2819                         default:
2820                                 g_error ("transform.c: Unimplemented opcode: 0xFE %02x (%s) at 0x%x\n", *td.ip, mono_opcode_name (256 + *td.ip), td.ip-header->code);
2821                         }
2822                         break;
2823                 default:
2824                         g_error ("transform.c: Unimplemented opcode: %02x at 0x%x\n", *td.ip, td.ip-header->code);
2825                 }
2826
2827                 if (td.new_ip - td.new_code != new_in_start_offset)
2828                         td.last_new_ip = td.new_code + new_in_start_offset;
2829                 else if (td.is_bb_start [td.in_start - td.il_code])
2830                         td.is_bb_start [td.ip - td.il_code] = 1;
2831
2832                 td.last_ip = td.in_start;
2833         }
2834
2835         if (mono_interp_traceopt) {
2836                 const guint16 *p = td.new_code;
2837                 printf("Runtime method: %p, VT stack size: %d\n", rtm, td.max_vt_sp);
2838                 printf("Calculated stack size: %d, stated size: %d\n", td.max_stack_height, header->max_stack);
2839                 while (p < td.new_ip) {
2840                         p = mono_interp_dis_mintop(td.new_code, p);
2841                         printf("\n");
2842                 }
2843         }
2844
2845         rtm->clauses = mono_mempool_alloc (domain->mp, header->num_clauses * sizeof(MonoExceptionClause));
2846         memcpy (rtm->clauses, header->clauses, header->num_clauses * sizeof(MonoExceptionClause));
2847         rtm->code = mono_mempool_alloc (domain->mp, (td.new_ip - td.new_code) * sizeof(gushort));
2848         memcpy (rtm->code, td.new_code, (td.new_ip - td.new_code) * sizeof(gushort));
2849         g_free (td.new_code);
2850         rtm->new_body_start = rtm->code + body_start_offset;
2851         rtm->num_clauses = header->num_clauses;
2852         for (i = 0; i < header->num_clauses; i++) {
2853                 MonoExceptionClause *c = rtm->clauses + i;
2854                 int end_off = c->try_offset + c->try_len;
2855                 c->try_offset = td.in_offsets [c->try_offset];
2856                 c->try_len = td.in_offsets [end_off] - c->try_offset;
2857                 end_off = c->handler_offset + c->handler_len;
2858                 c->handler_offset = td.in_offsets [c->handler_offset];
2859                 c->handler_len = td.in_offsets [end_off] - c->handler_offset;
2860         }
2861         rtm->vt_stack_size = td.max_vt_sp;
2862         rtm->alloca_size = rtm->locals_size + rtm->args_size + rtm->vt_stack_size + rtm->stack_size;
2863         rtm->data_items = mono_mempool_alloc (domain->mp, td.n_data_items * sizeof (td.data_items [0]));
2864         memcpy (rtm->data_items, td.data_items, td.n_data_items * sizeof (td.data_items [0]));
2865         g_free (td.in_offsets);
2866         g_free (td.forward_refs);
2867         for (i = 0; i < header->code_size; ++i)
2868                 g_free (td.stack_state [i]);
2869         g_free (td.stack_state);
2870         g_free (td.stack_height);
2871         g_free (td.vt_stack_size);
2872         g_free (td.data_items);
2873         g_hash_table_destroy (td.data_hash);
2874 }
2875
2876 static mono_mutex_t calc_section;
2877
2878 void
2879 mono_interp_transform_init (void)
2880 {
2881         mono_os_mutex_init_recursive(&calc_section);
2882 }
2883
2884 MonoException *
2885 mono_interp_transform_method (RuntimeMethod *runtime_method, ThreadContext *context)
2886 {
2887         int i, align, size, offset;
2888         MonoMethod *method = runtime_method->method;
2889         MonoImage *image = method->klass->image;
2890         MonoMethodHeader *header = mono_method_get_header (method);
2891         MonoMethodSignature *signature = mono_method_signature (method);
2892         register const unsigned char *ip, *end;
2893         const MonoOpcode *opcode;
2894         MonoMethod *m;
2895         MonoClass *class;
2896         MonoDomain *domain = mono_domain_get ();
2897         unsigned char *is_bb_start;
2898         int in;
2899         MonoVTable *method_class_vt;
2900         int backwards;
2901         MonoGenericContext *generic_context = NULL;
2902
2903         // g_printerr ("TRANSFORM(0x%016lx): begin %s::%s\n", mono_thread_current (), method->klass->name, method->name);
2904         method_class_vt = mono_class_vtable (domain, runtime_method->method->klass);
2905         if (!method_class_vt->initialized) {
2906                 jmp_buf env;
2907                 MonoInvocation *last_env_frame = context->env_frame;
2908                 jmp_buf *old_env = context->current_env;
2909
2910                 if (setjmp(env)) {
2911                         MonoException *failed = context->env_frame->ex;
2912                         context->env_frame->ex = NULL;
2913                         context->env_frame = last_env_frame;
2914                         context->current_env = old_env;
2915                         return failed;
2916                 }
2917                 context->env_frame = context->current_frame;
2918                 context->current_env = &env;
2919                 mono_runtime_class_init (method_class_vt);
2920                 context->env_frame = last_env_frame;
2921                 context->current_env = old_env;
2922         }
2923
2924         mono_profiler_method_jit (method); /* sort of... */
2925
2926         if (mono_method_signature (method)->is_inflated)
2927                 generic_context = &((MonoMethodInflated *) method)->context;
2928
2929         if (method->iflags & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
2930                 MonoMethod *nm = NULL;
2931                 mono_os_mutex_lock(&calc_section);
2932                 if (runtime_method->transformed) {
2933                         mono_os_mutex_unlock(&calc_section);
2934                         g_error ("FIXME: no jit info?");
2935                         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
2936                         return NULL;
2937                 }
2938
2939                 /* assumes all internal calls with an array this are built in... */
2940                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL && (! mono_method_signature (method)->hasthis || method->klass->rank == 0)) {
2941                         nm = mono_marshal_get_native_wrapper (method, TRUE, FALSE);
2942                 } else {
2943                         const char *name = method->name;
2944                         if (method->klass->parent == mono_defaults.multicastdelegate_class) {
2945                                 if (*name == 'I' && (strcmp (name, "Invoke") == 0)) {
2946                                         nm = mono_marshal_get_delegate_invoke (method, NULL);
2947                                 } else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
2948                                         nm = mono_marshal_get_delegate_begin_invoke (method);
2949                                 } else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
2950                                         nm = mono_marshal_get_delegate_end_invoke (method);
2951                                 }
2952                         }
2953                         if (nm == NULL) {
2954                                 runtime_method->code = g_malloc(sizeof(short));
2955                                 runtime_method->code[0] = MINT_CALLRUN;
2956                         }
2957                 }
2958                 if (nm == NULL) {
2959                         runtime_method->stack_size = sizeof (stackval); /* for tracing */
2960                         runtime_method->alloca_size = runtime_method->stack_size;
2961                         runtime_method->transformed = TRUE;
2962                         mono_os_mutex_unlock(&calc_section);
2963                         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
2964                         return NULL;
2965                 }
2966                 method = nm;
2967                 header = mono_method_get_header (nm);
2968                 mono_os_mutex_unlock(&calc_section);
2969         }
2970         g_assert ((signature->param_count + signature->hasthis) < 1000);
2971         g_assert (header->max_stack < 10000);
2972         /* intern the strings in the method. */
2973         ip = header->code;
2974         end = ip + header->code_size;
2975
2976         is_bb_start = g_malloc0(header->code_size);
2977         is_bb_start [0] = 1;
2978         while (ip < end) {
2979                 in = *ip;
2980                 if (in == 0xfe) {
2981                         ip++;
2982                         in = *ip + 256;
2983                 }
2984                 else if (in == 0xf0) {
2985                         ip++;
2986                         in = *ip + MONO_CEE_MONO_ICALL;
2987                 }
2988                 opcode = &mono_opcodes [in];
2989                 switch (opcode->argument) {
2990                 case MonoInlineNone:
2991                         ++ip;
2992                         break;
2993                 case MonoInlineString:
2994                         if (method->wrapper_type == MONO_WRAPPER_NONE)
2995                                 mono_ldstr (domain, image, mono_metadata_token_index (read32 (ip + 1)));
2996                         ip += 5;
2997                         break;
2998                 case MonoInlineType:
2999                         if (method->wrapper_type == MONO_WRAPPER_NONE) {
3000                                 class = mono_class_get_full (image, read32 (ip + 1), generic_context);
3001                                 mono_class_init (class);
3002                                 /* quick fix to not do this for the fake ptr classes - probably should not be getting the vtable at all here */
3003 #if 0
3004                                 g_error ("FIXME: interface method lookup: %s (in method %s)", class->name, method->name);
3005                                 if (!(class->flags & TYPE_ATTRIBUTE_INTERFACE) && class->interface_offsets != NULL)
3006                                         mono_class_vtable (domain, class);
3007 #endif
3008                         }
3009                         ip += 5;
3010                         break;
3011                 case MonoInlineMethod:
3012                         if (method->wrapper_type == MONO_WRAPPER_NONE && *ip != CEE_CALLI) {
3013                                 m = mono_get_method_full (image, read32 (ip + 1), NULL, generic_context);
3014                                 if (m == NULL) {
3015                                         g_free (is_bb_start);
3016                                         g_error ("FIXME: where to get method and class string?");
3017                                         return NULL;
3018                                         // return mono_get_exception_missing_method ();
3019                                 }
3020                                 mono_class_init (m->klass);
3021                                 if (!mono_class_is_interface (m->klass))
3022                                         mono_class_vtable (domain, m->klass);
3023                         }
3024                         ip += 5;
3025                         break;
3026                 case MonoInlineField:
3027                 case MonoInlineSig:
3028                 case MonoInlineI:
3029                 case MonoInlineTok:
3030                 case MonoShortInlineR:
3031                         ip += 5;
3032                         break;
3033                 case MonoInlineBrTarget:
3034                         offset = read32 (ip + 1);
3035                         ip += 5;
3036                         backwards = offset < 0;
3037                         offset += ip - header->code;
3038                         g_assert (offset >= 0 && offset < header->code_size);
3039                         is_bb_start [offset] |= backwards ? 2 : 1;
3040                         break;
3041                 case MonoShortInlineBrTarget:
3042                         offset = ((gint8 *)ip) [1];
3043                         ip += 2;
3044                         backwards = offset < 0;
3045                         offset += ip - header->code;
3046                         g_assert (offset >= 0 && offset < header->code_size);
3047                         is_bb_start [offset] |= backwards ? 2 : 1;
3048                         break;
3049                 case MonoInlineVar:
3050                         ip += 3;
3051                         break;
3052                 case MonoShortInlineVar:
3053                 case MonoShortInlineI:
3054                         ip += 2;
3055                         break;
3056                 case MonoInlineSwitch: {
3057                         guint32 n;
3058                         const unsigned char *next_ip;
3059                         ++ip;
3060                         n = read32 (ip);
3061                         ip += 4;
3062                         next_ip = ip + 4 * n;
3063                         for (i = 0; i < n; i++) {
3064                                 offset = read32 (ip);
3065                                 backwards = offset < 0;
3066                                 offset += next_ip - header->code;
3067                                 g_assert (offset >= 0 && offset < header->code_size);
3068                                 is_bb_start [offset] |= backwards ? 2 : 1;
3069                                 ip += 4;
3070                         }
3071                         break;
3072                 }
3073                 case MonoInlineR:
3074                 case MonoInlineI8:
3075                         ip += 9;
3076                         break;
3077                 default:
3078                         g_assert_not_reached ();
3079                 }
3080         }
3081         // g_printerr ("TRANSFORM(0x%016lx): end %s::%s\n", mono_thread_current (), method->klass->name, method->name);
3082
3083         /* the rest needs to be locked so it is only done once */
3084         mono_os_mutex_lock(&calc_section);
3085         if (runtime_method->transformed) {
3086                 mono_os_mutex_unlock(&calc_section);
3087                 g_free (is_bb_start);
3088                 mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3089                 return NULL;
3090         }
3091
3092         runtime_method->local_offsets = g_malloc (header->num_locals * sizeof(guint32));
3093         runtime_method->stack_size = (sizeof (stackval) + 2) * header->max_stack; /* + 1 for returns of called functions  + 1 for 0-ing in trace*/
3094         runtime_method->stack_size = (runtime_method->stack_size + 7) & ~7;
3095         offset = 0;
3096         for (i = 0; i < header->num_locals; ++i) {
3097                 size = mono_type_size (header->locals [i], &align);
3098                 offset += align - 1;
3099                 offset &= ~(align - 1);
3100                 runtime_method->local_offsets [i] = offset;
3101                 offset += size;
3102         }
3103         offset = (offset + 7) & ~7;
3104         runtime_method->locals_size = offset;
3105         g_assert (runtime_method->locals_size < 65536);
3106         offset = 0;
3107         runtime_method->arg_offsets = g_malloc(signature->param_count * sizeof(guint32));
3108         for (i = 0; i < signature->param_count; ++i) {
3109                 if (signature->pinvoke) {
3110                         guint32 dummy;
3111                         size = mono_type_native_stack_size (signature->params [i], &dummy);
3112                         align = 8;
3113                 }
3114                 else
3115                         size = mono_type_stack_size (signature->params [i], &align);
3116                 offset += align - 1;
3117                 offset &= ~(align - 1);
3118                 runtime_method->arg_offsets [i] = offset;
3119                 offset += size;
3120         }
3121         offset = (offset + 7) & ~7;
3122         runtime_method->args_size = offset;
3123         g_assert (runtime_method->args_size < 10000);
3124
3125         generate(method, runtime_method, is_bb_start);
3126
3127         g_free (is_bb_start);
3128
3129         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3130         runtime_method->transformed = TRUE;
3131         mono_os_mutex_unlock(&calc_section);
3132
3133         return NULL;
3134 }
3135