mono/mini/interp/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-internals.h"
  22 #include "interp.h"
  23
  24 // TODO: export from marshal.c
  25 MonoDelegate* mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn);
  26
  27 #define DEBUG 0
  28
  29 typedef struct
  30 {
  31         MonoClass *klass;
  32         unsigned char type;
  33         unsigned char flags;
  34 } StackInfo;
  35
  36 typedef struct
  37 {
  38         MonoMethod *method;
  39         MonoMethodHeader *header;
  40         RuntimeMethod *rtm;
  41         const unsigned char *il_code;
  42         const unsigned char *ip;
  43         const unsigned char *last_ip;
  44         const unsigned char *in_start;
  45         int code_size;
  46         int *in_offsets;
  47         int *forward_refs;
  48         StackInfo **stack_state;
  49         int *stack_height;
  50         int *vt_stack_size;
  51         unsigned char *is_bb_start;
  52         unsigned short *new_code;
  53         unsigned short *new_code_end;
  54         unsigned short *new_ip;
  55         unsigned short *last_new_ip;
  56         unsigned int max_code_size;
  57         StackInfo *stack;
  58         StackInfo *sp;
  59         unsigned int max_stack_height;
  60         unsigned int vt_sp;
  61         unsigned int max_vt_sp;
  62         int n_data_items;
  63         int max_data_items;
  64         void **data_items;
  65         GHashTable *data_hash;
  66 } TransformData;
  67
  68 #define MINT_TYPE_I1 0
  69 #define MINT_TYPE_U1 1
  70 #define MINT_TYPE_I2 2
  71 #define MINT_TYPE_U2 3
  72 #define MINT_TYPE_I4 4
  73 #define MINT_TYPE_I8 5
  74 #define MINT_TYPE_R4 6
  75 #define MINT_TYPE_R8 7
  76 #define MINT_TYPE_O  8
  77 #define MINT_TYPE_P  9
  78 #define MINT_TYPE_VT 10
  79
  80 #define STACK_TYPE_I4 0
  81 #define STACK_TYPE_I8 1
  82 #define STACK_TYPE_R8 2
  83 #define STACK_TYPE_O  3
  84 #define STACK_TYPE_VT 4
  85 #define STACK_TYPE_MP 5
  86 #define STACK_TYPE_F  6
  87
  88 static const char *stack_type_string [] = { "I4", "I8", "R8", "O ", "VT", "MP", "F " };
  89
  90 #if SIZEOF_VOID_P == 8
  91 #define STACK_TYPE_I STACK_TYPE_I8
  92 #else
  93 #define STACK_TYPE_I STACK_TYPE_I4
  94 #endif
  95
  96 static int stack_type [] = {
  97         STACK_TYPE_I4, /*I1*/
  98         STACK_TYPE_I4, /*U1*/
  99         STACK_TYPE_I4, /*I2*/
 100         STACK_TYPE_I4, /*U2*/
 101         STACK_TYPE_I4, /*I4*/
 102         STACK_TYPE_I8, /*I8*/
 103         STACK_TYPE_R8, /*R4*/
 104         STACK_TYPE_R8, /*R8*/
 105         STACK_TYPE_O,  /*O*/
 106         STACK_TYPE_MP, /*P*/
 107         STACK_TYPE_VT
 108 };
 109
 110 static void
 111 grow_code (TransformData *td)
 112 {
 113         unsigned int old_ip_offset = td->new_ip - td->new_code;
 114         unsigned int old_last_ip_offset = td->last_new_ip - td->new_code;
 115         g_assert (old_ip_offset <= td->max_code_size);
 116         td->new_code = g_realloc (td->new_code, (td->max_code_size *= 2) * sizeof (td->new_code [0]));
 117         td->new_code_end = td->new_code + td->max_code_size;
 118         td->new_ip = td->new_code + old_ip_offset;
 119         td->last_new_ip = td->new_code + old_last_ip_offset;
 120 }
 121
 122 #define ENSURE_CODE(td, n) \
 123         do { \
 124                 if ((td)->new_ip + (n) > (td)->new_code_end) \
 125                         grow_code (td); \
 126         } while (0)
 127
 128 #define ADD_CODE(td, n) \
 129         do { \
 130                 if ((td)->new_ip == (td)->new_code_end) \
 131                         grow_code (td); \
 132                 *(td)->new_ip++ = (n); \
 133         } while (0)
 134
 135 #define CHECK_STACK(td, n) \
 136         do { \
 137                 int stack_size = (td)->sp - (td)->stack; \
 138                 if (stack_size < (n)) \
 139                         g_warning ("%s.%s: not enough values (%d < %d) on stack at %04x", \
 140                                 (td)->method->klass->name, (td)->method->name, \
 141                                 stack_size, n, (td)->ip - (td)->il_code); \
 142         } while (0)
 143
 144 #define ENSURE_I4(td, sp_off) \
 145         do { \
 146                 if ((td)->sp [-sp_off].type == STACK_TYPE_I8) \
 147                         ADD_CODE(td, sp_off == 1 ? MINT_CONV_I4_I8 : MINT_CONV_I4_I8_SP); \
 148         } while (0)
 149
 150 static void
 151 handle_branch(TransformData *td, int short_op, int long_op, int offset)
 152 {
 153         int shorten_branch = 0;
 154         int target = td->ip + offset - td->il_code;
 155         if (target < 0 || target >= td->code_size)
 156                 g_assert_not_reached ();
 157         if (offset > 0 && td->stack_height [target] < 0) {
 158                 td->stack_height [target] = td->sp - td->stack;
 159                 if (td->stack_height [target] > 0)
 160                         td->stack_state [target] = g_memdup (td->stack, td->stack_height [target] * sizeof (td->stack [0]));
 161                 td->vt_stack_size [target] = td->vt_sp;
 162         }
 163         if (offset < 0) {
 164                 offset = td->in_offsets [target] - (td->new_ip - td->new_code);
 165                 if (offset >= -32768) {
 166                         shorten_branch = 1;
 167                 }
 168         } else {
 169                 int prev = td->forward_refs [target];
 170                 td->forward_refs [td->ip - td->il_code] = prev;
 171                 td->forward_refs [target] = td->ip - td->il_code;
 172                 offset = 0;
 173                 if (td->header->code_size <= 25000) /* FIX to be precise somehow? */
 174                         shorten_branch = 1;
 175         }
 176         if (shorten_branch) {
 177                 ADD_CODE(td, short_op);
 178                 ADD_CODE(td, offset);
 179         } else {
 180                 ADD_CODE(td, long_op);
 181                 ADD_CODE(td, * (unsigned short *)(&offset));
 182                 ADD_CODE(td, * ((unsigned short *)&offset + 1));
 183         }
 184 }
 185
 186 static void
 187 one_arg_branch(TransformData *td, int mint_op, int offset)
 188 {
 189         int type = td->sp [-1].type == STACK_TYPE_O || td->sp [-1].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-1].type;
 190         int long_op = mint_op + type - STACK_TYPE_I4;
 191         int short_op = long_op + MINT_BRFALSE_I4_S - MINT_BRFALSE_I4;
 192         CHECK_STACK(td, 1);
 193         --td->sp;
 194         handle_branch (td, short_op, long_op, offset);
 195 }
 196
 197 static void
 198 two_arg_branch(TransformData *td, int mint_op, int offset)
 199 {
 200         int type1 = td->sp [-1].type == STACK_TYPE_O || td->sp [-1].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-1].type;
 201         int type2 = td->sp [-2].type == STACK_TYPE_O || td->sp [-2].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-2].type;
 202         int long_op = mint_op + type1 - STACK_TYPE_I4;
 203         int short_op = long_op + MINT_BEQ_I4_S - MINT_BEQ_I4;
 204         CHECK_STACK(td, 2);
 205         if (type1 == STACK_TYPE_I4 && type2 == STACK_TYPE_I8) {
 206                 ADD_CODE(td, MINT_CONV_I8_I4);
 207                 td->in_offsets [td->ip - td->il_code]++;
 208         } else if (type1 == STACK_TYPE_I8 && type2 == STACK_TYPE_I4) {
 209                 ADD_CODE(td, MINT_CONV_I8_I4_SP);
 210                 td->in_offsets [td->ip - td->il_code]++;
 211         } else if (type1 != type2) {
 212                 g_warning("%s.%s: branch type mismatch %d %d",
 213                         td->method->klass->name, td->method->name,
 214                         td->sp [-1].type, td->sp [-2].type);
 215         }
 216         td->sp -= 2;
 217         handle_branch (td, short_op, long_op, offset);
 218 }
 219
 220 static void
 221 unary_arith_op(TransformData *td, int mint_op)
 222 {
 223         int op = mint_op + td->sp [-1].type - STACK_TYPE_I4;
 224         CHECK_STACK(td, 1);
 225         ADD_CODE(td, op);
 226 }
 227
 228 static void
 229 binary_arith_op(TransformData *td, int mint_op)
 230 {
 231         int type1 = td->sp [-2].type;
 232         int type2 = td->sp [-1].type;
 233         int op;
 234 #if SIZEOF_VOID_P == 8
 235         if ((type1 == STACK_TYPE_MP || type1 == STACK_TYPE_I8) && type2 == STACK_TYPE_I4) {
 236                 ADD_CODE(td, MINT_CONV_I8_I4);
 237                 type2 = STACK_TYPE_I8;
 238         }
 239         if (type1 == STACK_TYPE_I4 && (type2 == STACK_TYPE_MP || type2 == STACK_TYPE_I8)) {
 240                 ADD_CODE(td, MINT_CONV_I8_I4_SP);
 241                 type1 = STACK_TYPE_I8;
 242                 td->sp [-2].type = STACK_TYPE_I8;
 243         }
 244 #endif
 245         if (type1 == STACK_TYPE_MP)
 246                 type1 = STACK_TYPE_I;
 247         if (type2 == STACK_TYPE_MP)
 248                 type2 = STACK_TYPE_I;
 249         if (type1 != type2) {
 250                 g_warning("%s.%s: %04x arith type mismatch %s %d %d",
 251                         td->method->klass->name, td->method->name,
 252                         td->ip - td->il_code, mono_interp_opname[mint_op], type1, type2);
 253         }
 254         op = mint_op + type1 - STACK_TYPE_I4;
 255         CHECK_STACK(td, 2);
 256         ADD_CODE(td, op);
 257         --td->sp;
 258 }
 259
 260 static void
 261 binary_int_op(TransformData *td, int mint_op)
 262 {
 263         int op = mint_op + td->sp [-1].type - STACK_TYPE_I4;
 264         CHECK_STACK(td, 2);
 265         if (td->sp [-1].type != td->sp [-2].type)
 266                 g_warning("%s.%s: int type mismatch", td->method->klass->name, td->method->name);
 267         ADD_CODE(td, op);
 268         --td->sp;
 269 }
 270
 271 static void
 272 shift_op(TransformData *td, int mint_op)
 273 {
 274         int op = mint_op + td->sp [-2].type - STACK_TYPE_I4;
 275         CHECK_STACK(td, 2);
 276         if (td->sp [-1].type != STACK_TYPE_I4) {
 277                 g_warning("%s.%s: shift type mismatch %d",
 278                         td->method->klass->name, td->method->name,
 279                         td->sp [-2].type);
 280         }
 281         ADD_CODE(td, op);
 282         --td->sp;
 283 }
 284
 285 static int
 286 mint_type(MonoType *type)
 287 {
 288         if (type->byref)
 289                 return MINT_TYPE_P;
 290 enum_type:
 291         switch (type->type) {
 292         case MONO_TYPE_I1:
 293                 return MINT_TYPE_I1;
 294         case MONO_TYPE_U1:
 295         case MONO_TYPE_BOOLEAN:
 296                 return MINT_TYPE_U1;
 297         case MONO_TYPE_I2:
 298                 return MINT_TYPE_I2;
 299         case MONO_TYPE_U2:
 300         case MONO_TYPE_CHAR:
 301                 return MINT_TYPE_U2;
 302         case MONO_TYPE_I4:
 303         case MONO_TYPE_U4:
 304                 return MINT_TYPE_I4;
 305         case MONO_TYPE_I:
 306         case MONO_TYPE_U:
 307 #if SIZEOF_VOID_P == 4
 308                 return MINT_TYPE_I4;
 309 #else
 310                 return MINT_TYPE_I8;
 311 #endif
 312         case MONO_TYPE_PTR:
 313                 return MINT_TYPE_P;
 314         case MONO_TYPE_R4:
 315                 return MINT_TYPE_R4;
 316         case MONO_TYPE_I8:
 317         case MONO_TYPE_U8:
 318                 return MINT_TYPE_I8;
 319         case MONO_TYPE_R8:
 320                 return MINT_TYPE_R8;
 321         case MONO_TYPE_STRING:
 322         case MONO_TYPE_SZARRAY:
 323         case MONO_TYPE_CLASS:
 324         case MONO_TYPE_OBJECT:
 325         case MONO_TYPE_ARRAY:
 326                 return MINT_TYPE_O;
 327         case MONO_TYPE_VALUETYPE:
 328                 if (type->data.klass->enumtype) {
 329                         type = mono_class_enum_basetype (type->data.klass);
 330                         goto enum_type;
 331                 } else
 332                         return MINT_TYPE_VT;
 333         case MONO_TYPE_GENERICINST:
 334                 type = &type->data.generic_class->container_class->byval_arg;
 335                 goto enum_type;
 336         default:
 337                 g_warning ("got type 0x%02x", type->type);
 338                 g_assert_not_reached ();
 339         }
 340         return -1;
 341 }
 342
 343 static int
 344 can_store (int stack_type, int var_type)
 345 {
 346         if (stack_type == STACK_TYPE_O || stack_type == STACK_TYPE_MP)
 347                 stack_type = STACK_TYPE_I;
 348         if (var_type == STACK_TYPE_O || var_type == STACK_TYPE_MP)
 349                 var_type = STACK_TYPE_I;
 350         return stack_type == var_type;
 351 }
 352
 353 #define SET_SIMPLE_TYPE(s, ty) \
 354         do { \
 355                 (s)->type = (ty); \
 356                 (s)->flags = 0; \
 357                 (s)->klass = NULL; \
 358         } while (0)
 359
 360 #define SET_TYPE(s, ty, k) \
 361         do { \
 362                 (s)->type = (ty); \
 363                 (s)->flags = 0; \
 364                 (s)->klass = k; \
 365         } while (0)
 366
 367 #define PUSH_SIMPLE_TYPE(td, ty) \
 368         do { \
 369                 int sp_height; \
 370                 (td)->sp++; \
 371                 sp_height = (td)->sp - (td)->stack; \
 372                 if (sp_height > (td)->max_stack_height) \
 373                         (td)->max_stack_height = sp_height; \
 374                 SET_SIMPLE_TYPE((td)->sp - 1, ty); \
 375         } while (0)
 376
 377 #define PUSH_TYPE(td, ty, k) \
 378         do { \
 379                 int sp_height; \
 380                 (td)->sp++; \
 381                 sp_height = (td)->sp - (td)->stack; \
 382                 if (sp_height > (td)->max_stack_height) \
 383                         (td)->max_stack_height = sp_height; \
 384                 SET_TYPE((td)->sp - 1, ty, k); \
 385         } while (0)
 386
 387 #define PUSH_VT(td, size) \
 388         do { \
 389                 (td)->vt_sp += ((size) + 7) & ~7; \
 390                 if ((td)->vt_sp > (td)->max_vt_sp) \
 391                         (td)->max_vt_sp = (td)->vt_sp; \
 392         } while (0)
 393
 394 #define POP_VT(td, size) \
 395         do { \
 396                 (td)->vt_sp -= ((size) + 7) & ~7; \
 397         } while (0)
 398
 399 #if NO_UNALIGNED_ACCESS
 400 #define WRITE32(td, v) \
 401         do { \
 402                 ENSURE_CODE(td, 2); \
 403                 * (guint16 *)((td)->new_ip) = * (guint16 *)(v); \
 404                 * ((guint16 *)((td)->new_ip) + 1) = * ((guint16 *)(v) + 1); \
 405                 (td)->new_ip += 2; \
 406         } while (0)
 407
 408 #define WRITE64(td, v) \
 409         do { \
 410                 ENSURE_CODE(td, 4); \
 411                 * (guint16 *)((td)->new_ip) = * (guint16 *)(v); \
 412                 * ((guint16 *)((td)->new_ip) + 1) = * ((guint16 *)(v) + 1); \
 413                 * ((guint16 *)((td)->new_ip) + 2) = * ((guint16 *)(v) + 2); \
 414                 * ((guint16 *)((td)->new_ip) + 3) = * ((guint16 *)(v) + 3); \
 415                 (td)->new_ip += 4; \
 416         } while (0)
 417 #else
 418 #define WRITE32(td, v) \
 419         do { \
 420                 ENSURE_CODE(td, 2); \
 421                 * (guint32 *)((td)->new_ip) = * (guint32 *)(v); \
 422                 (td)->new_ip += 2; \
 423         } while (0)
 424
 425 #define WRITE64(td, v) \
 426         do { \
 427                 ENSURE_CODE(td, 4); \
 428                 * (guint64 *)((td)->new_ip) = * (guint64 *)(v); \
 429                 (td)->new_ip += 4; \
 430         } while (0)
 431
 432 #endif
 433
 434 static void
 435 load_arg(TransformData *td, int n)
 436 {
 437         int mt;
 438         MonoClass *klass = NULL;
 439         MonoType *type;
 440
 441         gboolean hasthis = mono_method_signature (td->method)->hasthis;
 442         if (hasthis && n == 0)
 443                 type = &td->method->klass->byval_arg;
 444         else
 445                 type = mono_method_signature (td->method)->params [hasthis ? n - 1 : n];
 446
 447         mt = mint_type (type);
 448         if (mt == MINT_TYPE_VT) {
 449                 gint32 size;
 450                 klass = mono_class_from_mono_type (type);
 451                 if (mono_method_signature (td->method)->pinvoke)
 452                         size = mono_class_native_size (klass, NULL);
 453                 else
 454                         size = mono_class_value_size (klass, NULL);
 455
 456                 if (hasthis && n == 0) {
 457                         mt = MINT_TYPE_P;
 458                         ADD_CODE (td, MINT_LDARG_P);
 459                         ADD_CODE (td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 460                         klass = NULL;
 461                 } else {
 462                         PUSH_VT (td, size);
 463                         ADD_CODE (td, MINT_LDARG_VT);
 464                         ADD_CODE (td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 465                         WRITE32 (td, &size);
 466                 }
 467         } else {
 468                 if (hasthis && n == 0) {
 469                         mt = MINT_TYPE_P;
 470                         ADD_CODE (td, MINT_LDARG_P);
 471                         ADD_CODE (td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 472                         klass = NULL;
 473                 } else {
 474                         ADD_CODE(td, MINT_LDARG_I1 + (mt - MINT_TYPE_I1));
 475                         ADD_CODE(td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 476                         if (mt == MINT_TYPE_O)
 477                                 klass = mono_class_from_mono_type (type);
 478                 }
 479         }
 480         PUSH_TYPE(td, stack_type[mt], klass);
 481 }
 482
 483 static void
 484 store_arg(TransformData *td, int n)
 485 {
 486         int mt;
 487         CHECK_STACK (td, 1);
 488         MonoType *type;
 489
 490         gboolean hasthis = mono_method_signature (td->method)->hasthis;
 491         if (hasthis && n == 0)
 492                 type = &td->method->klass->byval_arg;
 493         else
 494                 type = mono_method_signature (td->method)->params [n - !!hasthis];
 495
 496         mt = mint_type (type);
 497         if (mt == MINT_TYPE_VT) {
 498                 gint32 size;
 499                 MonoClass *klass = mono_class_from_mono_type (type);
 500                 if (mono_method_signature (td->method)->pinvoke)
 501                         size = mono_class_native_size (klass, NULL);
 502                 else
 503                         size = mono_class_value_size (klass, NULL);
 504                 ADD_CODE(td, MINT_STARG_VT);
 505                 ADD_CODE(td, td->rtm->arg_offsets [n]);
 506                 WRITE32(td, &size);
 507                 if (td->sp [-1].type == STACK_TYPE_VT)
 508                         POP_VT(td, size);
 509         } else {
 510                 ADD_CODE(td, MINT_STARG_I1 + (mt - MINT_TYPE_I1));
 511                 ADD_CODE(td, td->rtm->arg_offsets [n]);
 512         }
 513         --td->sp;
 514 }
 515
 516 static void
 517 store_inarg(TransformData *td, int n)
 518 {
 519         MonoType *type;
 520         gboolean hasthis = mono_method_signature (td->method)->hasthis;
 521         if (hasthis && n == 0)
 522                 type = &td->method->klass->byval_arg;
 523         else
 524                 type = mono_method_signature (td->method)->params [n - !!hasthis];
 525
 526         int mt = mint_type (type);
 527         if (hasthis && n == 0) {
 528                 ADD_CODE (td, MINT_STINARG_P);
 529                 ADD_CODE (td, n);
 530                 return;
 531         }
 532         if (mt == MINT_TYPE_VT) {
 533                 MonoClass *klass = mono_class_from_mono_type (type);
 534                 gint32 size;
 535                 if (mono_method_signature (td->method)->pinvoke)
 536                         size = mono_class_native_size (klass, NULL);
 537                 else
 538                         size = mono_class_value_size (klass, NULL);
 539                 ADD_CODE(td, MINT_STINARG_VT);
 540                 ADD_CODE(td, n);
 541                 WRITE32(td, &size);
 542         } else {
 543                 ADD_CODE(td, MINT_STINARG_I1 + (mt - MINT_TYPE_I1));
 544                 ADD_CODE(td, n);
 545         }
 546 }
 547
 548 static void
 549 load_local(TransformData *td, int n)
 550 {
 551         MonoType *type = td->header->locals [n];
 552         int mt = mint_type (type);
 553         int offset = td->rtm->local_offsets [n];
 554         MonoClass *klass = NULL;
 555         if (mt == MINT_TYPE_VT) {
 556                 klass = mono_class_from_mono_type (type);
 557                 gint32 size = mono_class_value_size (klass, NULL);
 558                 PUSH_VT(td, size);
 559                 ADD_CODE(td, MINT_LDLOC_VT);
 560                 ADD_CODE(td, offset); /*FIX for large offset */
 561                 WRITE32(td, &size);
 562         } else {
 563                 g_assert (mt < MINT_TYPE_VT);
 564                 if (mt == MINT_TYPE_I4 && !td->is_bb_start [td->in_start - td->il_code] && td->last_new_ip != NULL &&
 565                         td->last_new_ip [0] == MINT_STLOC_I4 && td->last_new_ip [1] == offset) {
 566                         td->last_new_ip [0] = MINT_STLOC_NP_I4;
 567                 } else if (mt == MINT_TYPE_O && !td->is_bb_start [td->in_start - td->il_code] && td->last_new_ip != NULL &&
 568                         td->last_new_ip [0] == MINT_STLOC_O && td->last_new_ip [1] == offset) {
 569                         td->last_new_ip [0] = MINT_STLOC_NP_O;
 570                 } else {
 571                         ADD_CODE(td, MINT_LDLOC_I1 + (mt - MINT_TYPE_I1));
 572                         ADD_CODE(td, offset); /*FIX for large offset */
 573                 }
 574                 if (mt == MINT_TYPE_O)
 575                         klass = mono_class_from_mono_type (type);
 576         }
 577         PUSH_TYPE(td, stack_type[mt], klass);
 578 }
 579
 580 static void
 581 store_local(TransformData *td, int n)
 582 {
 583         MonoType *type = td->header->locals [n];
 584         int mt = mint_type (type);
 585         int offset = td->rtm->local_offsets [n];
 586         CHECK_STACK (td, 1);
 587 #if SIZEOF_VOID_P == 8
 588         if (td->sp [-1].type == STACK_TYPE_I4 && stack_type [mt] == STACK_TYPE_I8) {
 589                 ADD_CODE(td, MINT_CONV_I8_I4);
 590                 td->sp [-1].type = STACK_TYPE_I8;
 591         }
 592 #endif
 593         if (!can_store(td->sp [-1].type, stack_type [mt])) {
 594                 g_warning("%s.%s: Store local stack type mismatch %d %d",
 595                         td->method->klass->name, td->method->name,
 596                         stack_type [mt], td->sp [-1].type);
 597         }
 598         if (mt == MINT_TYPE_VT) {
 599                 MonoClass *klass = mono_class_from_mono_type (type);
 600                 gint32 size = mono_class_value_size (klass, NULL);
 601                 ADD_CODE(td, MINT_STLOC_VT);
 602                 ADD_CODE(td, offset); /*FIX for large offset */
 603                 WRITE32(td, &size);
 604                 if (td->sp [-1].type == STACK_TYPE_VT)
 605                         POP_VT(td, size);
 606         } else {
 607                 g_assert (mt < MINT_TYPE_VT);
 608                 ADD_CODE(td, MINT_STLOC_I1 + (mt - MINT_TYPE_I1));
 609                 ADD_CODE(td, offset); /*FIX for large offset */
 610         }
 611         --td->sp;
 612 }
 613
 614 #define SIMPLE_OP(td, op) \
 615         do { \
 616                 ADD_CODE(&td, op); \
 617                 ++td.ip; \
 618         } while (0)
 619
 620 static guint16
 621 get_data_item_index (TransformData *td, void *ptr)
 622 {
 623         gpointer p = g_hash_table_lookup (td->data_hash, ptr);
 624         guint index;
 625         if (p != NULL)
 626                 return GPOINTER_TO_UINT (p) - 1;
 627         if (td->max_data_items == td->n_data_items) {
 628                 td->max_data_items = td->n_data_items == 0 ? 16 : 2 * td->max_data_items;
 629                 td->data_items = g_realloc (td->data_items, td->max_data_items * sizeof(td->data_items [0]));
 630         }
 631         index = td->n_data_items;
 632         td->data_items [index] = ptr;
 633         ++td->n_data_items;
 634         g_hash_table_insert (td->data_hash, ptr, GUINT_TO_POINTER (index + 1));
 635         return index;
 636 }
 637
 638 static void
 639 interp_transform_call (TransformData *td, MonoMethod *method, MonoMethod *target_method, MonoDomain *domain, MonoGenericContext *generic_context, unsigned char *is_bb_start, int body_start_offset, MonoClass *constrained_class, gboolean readonly)
 640 {
 641         MonoImage *image = method->klass->image;
 642         MonoMethodSignature *csignature;
 643         MonoError error;
 644         int virtual = *td->ip == CEE_CALLVIRT;
 645         int calli = *td->ip == CEE_CALLI || *td->ip == CEE_MONO_CALLI_EXTRA_ARG;
 646         int i;
 647         guint32 vt_stack_used = 0;
 648         guint32 vt_res_size = 0;
 649         int op = -1;
 650         int native = 0;
 651         int is_void = 0;
 652
 653         guint32 token = read32 (td->ip + 1);
 654
 655         if (target_method == NULL) {
 656                 if (calli) {
 657                         CHECK_STACK(td, 1);
 658                         native = (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE && td->sp [-1].type == STACK_TYPE_I);
 659                         --td->sp;
 660                         if (method->wrapper_type != MONO_WRAPPER_NONE)
 661                                 csignature = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
 662                         else
 663                                 csignature = mono_metadata_parse_signature (image, token);
 664
 665                         if (generic_context) {
 666                                 csignature = mono_inflate_generic_signature (csignature, generic_context, &error);
 667                                 mono_error_cleanup (&error); /* FIXME: don't swallow the error */
 668                         }
 669
 670                         target_method = NULL;
 671                 } else {
 672                         if (method->wrapper_type == MONO_WRAPPER_NONE)
 673                                 target_method = mono_get_method_full (image, token, NULL, generic_context);
 674                         else
 675                                 target_method = (MonoMethod *)mono_method_get_wrapper_data (method, token);
 676                         csignature = mono_method_signature (target_method);
 677                         if (target_method->klass == mono_defaults.string_class) {
 678                                 if (target_method->name [0] == 'g') {
 679                                         if (strcmp (target_method->name, "get_Chars") == 0)
 680                                                 op = MINT_GETCHR;
 681                                         else if (strcmp (target_method->name, "get_Length") == 0)
 682                                                 op = MINT_STRLEN;
 683                                 }
 684                         } else if (mono_class_is_subclass_of (target_method->klass, mono_defaults.array_class, FALSE)) {
 685                                 if (!strcmp (target_method->name, "get_Rank")) {
 686                                         op = MINT_ARRAY_RANK;
 687                                 } else if (!strcmp (target_method->name, "get_Length")) {
 688                                         op = MINT_LDLEN;
 689                                 } else if (!strcmp (target_method->name, "Address")) {
 690                                         op = readonly ? MINT_LDELEMA : MINT_LDELEMA_TC;
 691                                 }
 692                         } else if (target_method && generic_context) {
 693                                 csignature = mono_inflate_generic_signature (csignature, generic_context, &error);
 694                                 mono_error_cleanup (&error); /* FIXME: don't swallow the error */
 695                                 target_method = mono_class_inflate_generic_method_checked (target_method, generic_context, &error);
 696                                 mono_error_cleanup (&error); /* FIXME: don't swallow the error */
 697                         }
 698                 }
 699         } else {
 700                 csignature = mono_method_signature (target_method);
 701         }
 702
 703         if (constrained_class) {
 704                 if (constrained_class->enumtype && !strcmp (target_method->name, "GetHashCode")) {
 705                         /* Use the corresponding method from the base type to avoid boxing */
 706                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
 707                         g_assert (base_type);
 708                         constrained_class = mono_class_from_mono_type (base_type);
 709                         target_method = mono_class_get_method_from_name (constrained_class, target_method->name, 0);
 710                         g_assert (target_method);
 711                 }
 712         }
 713
 714         if (constrained_class) {
 715                 mono_class_setup_vtable (constrained_class);
 716 #if DEBUG_INTERP
 717                 g_print ("CONSTRAINED.CALLVIRT: %s::%s.  %s (%p) ->\n", target_method->klass->name, target_method->name, mono_signature_full_name (target_method->signature), target_method);
 718 #endif
 719                 target_method = mono_get_method_constrained_with_method (image, target_method, constrained_class, generic_context, &error);
 720 #if DEBUG_INTERP
 721                 g_print ("                    : %s::%s.  %s (%p)\n", target_method->klass->name, target_method->name, mono_signature_full_name (target_method->signature), target_method);
 722 #endif
 723                 mono_error_cleanup (&error); /* FIXME: don't swallow the error */
 724                 mono_class_setup_vtable (target_method->klass);
 725
 726                 if (constrained_class->valuetype && (target_method->klass == mono_defaults.object_class || target_method->klass == mono_defaults.enum_class->parent || target_method->klass == mono_defaults.enum_class)) {
 727                         if (target_method->klass == mono_defaults.enum_class && (td->sp - csignature->param_count - 1)->type == STACK_TYPE_MP) {
 728                                 /* managed pointer on the stack, we need to deref that puppy */
 729                                 ADD_CODE (td, MINT_LDIND_I);
 730                                 ADD_CODE (td, csignature->param_count);
 731                         }
 732                         ADD_CODE (td, MINT_BOX);
 733                         ADD_CODE (td, get_data_item_index (td, constrained_class));
 734                         ADD_CODE (td, csignature->param_count);
 735                 } else if (!constrained_class->valuetype) {
 736                         /* managed pointer on the stack, we need to deref that puppy */
 737                         ADD_CODE (td, MINT_LDIND_I);
 738                         ADD_CODE (td, csignature->param_count);
 739                 } else {
 740                         if (target_method->klass->valuetype) {
 741                                 /* Own method */
 742                         } else {
 743                                 /* Interface method */
 744                                 int ioffset, slot;
 745
 746                                 mono_class_setup_vtable (constrained_class);
 747                                 ioffset = mono_class_interface_offset (constrained_class, target_method->klass);
 748                                 if (ioffset == -1)
 749                                         g_error ("type load error: constrained_class");
 750                                 slot = mono_method_get_vtable_slot (target_method);
 751                                 if (slot == -1)
 752                                         g_error ("type load error: target_method->klass");
 753                                 target_method = constrained_class->vtable [ioffset + slot];
 754
 755                                 if (target_method->klass == mono_defaults.enum_class) {
 756                                         if ((td->sp - csignature->param_count - 1)->type == STACK_TYPE_MP) {
 757                                                 /* managed pointer on the stack, we need to deref that puppy */
 758                                                 ADD_CODE (td, MINT_LDIND_I);
 759                                                 ADD_CODE (td, csignature->param_count);
 760                                         }
 761                                         ADD_CODE (td, MINT_BOX);
 762                                         ADD_CODE (td, get_data_item_index (td, constrained_class));
 763                                         ADD_CODE (td, csignature->param_count);
 764                                 }
 765                         }
 766                         virtual = FALSE;
 767                 }
 768         }
 769
 770         if (target_method)
 771                 mono_class_init (target_method->klass);
 772
 773         CHECK_STACK (td, csignature->param_count + csignature->hasthis);
 774         if (!calli && (!virtual || (target_method->flags & METHOD_ATTRIBUTE_VIRTUAL) == 0) &&
 775                 (target_method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) == 0 &&
 776                 (target_method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) == 0) {
 777                 int called_inited = mono_class_vtable (domain, target_method->klass)->initialized;
 778                 MonoMethodHeader *mheader = mono_method_get_header (target_method);
 779
 780                 if (/*mono_metadata_signature_equal (method->signature, target_method->signature) */ method == target_method && *(td->ip + 5) == CEE_RET) {
 781                         int offset;
 782                         if (mono_interp_traceopt)
 783                                 g_print ("Optimize tail call of %s.%s\n", target_method->klass->name, target_method->name);
 784                         for (i = csignature->param_count - 1; i >= 0; --i)
 785                                 store_arg (td, i + csignature->hasthis);
 786
 787                         ADD_CODE(td, MINT_BR_S);
 788                         offset = body_start_offset - ((td->new_ip - 1) - td->new_code);
 789                         ADD_CODE(td, offset);
 790                         if (!is_bb_start [td->ip + 5 - td->il_code])
 791                                 ++td->ip; /* gobble the CEE_RET if it isn't branched to */
 792                         td->ip += 5;
 793                         return;
 794                 } else {
 795                         /* mheader might not exist if this is a delegate invoc, etc */
 796                         if (mheader && *mheader->code == CEE_RET && called_inited) {
 797                                 if (mono_interp_traceopt)
 798                                         g_print ("Inline (empty) call of %s.%s\n", target_method->klass->name, target_method->name);
 799                                 for (i = 0; i < csignature->param_count; i++)
 800                                         ADD_CODE (td, MINT_POP); /*FIX: vt */
 801                                         ADD_CODE (td, 0);
 802                                 if (csignature->hasthis) {
 803                                         if (virtual)
 804                                                 ADD_CODE(td, MINT_CKNULL);
 805                                         ADD_CODE (td, MINT_POP);
 806                                         ADD_CODE (td, 0);
 807                                 }
 808                                 td->sp -= csignature->param_count + csignature->hasthis;
 809                                 td->ip += 5;
 810                                 return;
 811                         }
 812                 }
 813         }
 814         if (method->wrapper_type == MONO_WRAPPER_NONE && target_method != NULL) {
 815                 if (target_method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
 816                         target_method = mono_marshal_get_native_wrapper (target_method, FALSE, FALSE);
 817                 if (!virtual && target_method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
 818                         target_method = mono_marshal_get_synchronized_wrapper (target_method);
 819         }
 820         g_assert (csignature->call_convention == MONO_CALL_DEFAULT || csignature->call_convention == MONO_CALL_C);
 821         td->sp -= csignature->param_count + !!csignature->hasthis;
 822         for (i = 0; i < csignature->param_count; ++i) {
 823                 if (td->sp [i + !!csignature->hasthis].type == STACK_TYPE_VT) {
 824                         gint32 size;
 825                         MonoClass *klass = mono_class_from_mono_type (csignature->params [i]);
 826                         if (csignature->pinvoke && method->wrapper_type != MONO_WRAPPER_NONE)
 827                                 size = mono_class_native_size (klass, NULL);
 828                         else
 829                                 size = mono_class_value_size (klass, NULL);
 830                         size = (size + 7) & ~7;
 831                         vt_stack_used += size;
 832                 }
 833         }
 834
 835         /* need to handle typedbyref ... */
 836         if (csignature->ret->type != MONO_TYPE_VOID) {
 837                 int mt = mint_type(csignature->ret);
 838                 MonoClass *klass = mono_class_from_mono_type (csignature->ret);
 839                 if (mt == MINT_TYPE_VT) {
 840                         if (csignature->pinvoke && method->wrapper_type != MONO_WRAPPER_NONE)
 841                                 vt_res_size = mono_class_native_size (klass, NULL);
 842                         else
 843                                 vt_res_size = mono_class_value_size (klass, NULL);
 844                         PUSH_VT(td, vt_res_size);
 845                 }
 846                 PUSH_TYPE(td, stack_type[mt], klass);
 847         } else
 848                 is_void = TRUE;
 849
 850         if (op >= 0) {
 851                 ADD_CODE (td, op);
 852 #if SIZEOF_VOID_P == 8
 853                 if (op == MINT_LDLEN)
 854                         ADD_CODE (td, MINT_CONV_I4_I8);
 855 #endif
 856                 if (op == MINT_LDELEMA || op == MINT_LDELEMA_TC) {
 857                         ADD_CODE (td, get_data_item_index (td, target_method->klass));
 858                         ADD_CODE (td, 1 + target_method->klass->rank);
 859                 }
 860         } else {
 861                 if (calli)
 862                         ADD_CODE(td, native ? MINT_CALLI_NAT : MINT_CALLI);
 863                 else if (virtual)
 864                         ADD_CODE(td, is_void ? MINT_VCALLVIRT : MINT_CALLVIRT);
 865                 else
 866                         ADD_CODE(td, is_void ? MINT_VCALL : MINT_CALL);
 867
 868                 if (calli) {
 869                         ADD_CODE(td, get_data_item_index (td, (void *)csignature));
 870                 } else {
 871                         ADD_CODE(td, get_data_item_index (td, (void *)mono_interp_get_runtime_method (domain, target_method, &error)));
 872                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
 873                 }
 874         }
 875         td->ip += 5;
 876         if (vt_stack_used != 0 || vt_res_size != 0) {
 877                 ADD_CODE(td, MINT_VTRESULT);
 878                 ADD_CODE(td, vt_res_size);
 879                 WRITE32(td, &vt_stack_used);
 880                 td->vt_sp -= vt_stack_used;
 881         }
 882 }
 883
 884 static void
 885 generate (MonoMethod *method, RuntimeMethod *rtm, unsigned char *is_bb_start, MonoGenericContext *generic_context)
 886 {
 887         MonoMethodHeader *header = mono_method_get_header (method);
 888         MonoMethodSignature *signature = mono_method_signature (method);
 889         MonoImage *image = method->klass->image;
 890         MonoDomain *domain = mono_domain_get ();
 891         MonoClass *constrained_class = NULL;
 892         MonoError error;
 893         int offset, mt, i, i32;
 894         gboolean readonly = FALSE;
 895         MonoClass *klass;
 896         MonoClassField *field;
 897         const unsigned char *end;
 898         int new_in_start_offset;
 899         int body_start_offset;
 900         int target;
 901         guint32 token;
 902         TransformData td;
 903         int generating_code = 1;
 904
 905         memset(&td, 0, sizeof(td));
 906         td.method = method;
 907         td.rtm = rtm;
 908         td.is_bb_start = is_bb_start;
 909         td.il_code = header->code;
 910         td.code_size = header->code_size;
 911         td.header = header;
 912         td.max_code_size = td.code_size;
 913         td.new_code = (unsigned short *)g_malloc(td.max_code_size * sizeof(gushort));
 914         td.new_code_end = td.new_code + td.max_code_size;
 915         td.in_offsets = g_malloc0(header->code_size * sizeof(int));
 916         td.forward_refs = g_malloc(header->code_size * sizeof(int));
 917         td.stack_state = g_malloc0(header->code_size * sizeof(StackInfo *));
 918         td.stack_height = g_malloc(header->code_size * sizeof(int));
 919         td.vt_stack_size = g_malloc(header->code_size * sizeof(int));
 920         td.n_data_items = 0;
 921         td.max_data_items = 0;
 922         td.data_items = NULL;
 923         td.data_hash = g_hash_table_new (NULL, NULL);
 924         rtm->data_items = td.data_items;
 925         for (i = 0; i < header->code_size; i++) {
 926                 td.forward_refs [i] = -1;
 927                 td.stack_height [i] = -1;
 928         }
 929         td.new_ip = td.new_code;
 930         td.last_new_ip = NULL;
 931
 932         td.stack = g_malloc0 ((header->max_stack + 1) * sizeof (td.stack [0]));
 933         td.sp = td.stack;
 934         td.max_stack_height = 0;
 935
 936         for (i = 0; i < header->num_clauses; i++) {
 937                 MonoExceptionClause *c = header->clauses + i;
 938                 td.stack_height [c->handler_offset] = 0;
 939                 td.vt_stack_size [c->handler_offset] = 0;
 940                 td.is_bb_start [c->handler_offset] = 1;
 941
 942                 td.stack_height [c->handler_offset] = 1;
 943                 td.stack_state [c->handler_offset] = g_malloc0(sizeof(StackInfo));
 944                 td.stack_state [c->handler_offset][0].type = STACK_TYPE_O;
 945                 td.stack_state [c->handler_offset][0].klass = NULL; /*FIX*/
 946         }
 947
 948         td.ip = header->code;
 949         end = td.ip + header->code_size;
 950
 951         if (mono_interp_traceopt) {
 952                 char *tmp = mono_disasm_code (NULL, method, td.ip, end);
 953                 char *name = mono_method_full_name (method, TRUE);
 954                 g_print ("Method %s, original code:\n", name);
 955                 g_print ("%s\n", tmp);
 956                 g_free (tmp);
 957                 g_free (name);
 958         }
 959
 960         if (signature->hasthis)
 961                 store_inarg (&td, 0);
 962         for (i = 0; i < signature->param_count; i++)
 963                 store_inarg (&td, i + !!signature->hasthis);
 964
 965         body_start_offset = td.new_ip - td.new_code;
 966
 967         for (i = 0; i < header->num_locals; i++) {
 968                 int mt = mint_type(header->locals [i]);
 969                 if (mt == MINT_TYPE_VT || mt == MINT_TYPE_O || mt == MINT_TYPE_P) {
 970                         ADD_CODE(&td, MINT_INITLOCALS);
 971                         break;
 972                 }
 973         }
 974
 975         while (td.ip < end) {
 976                 int in_offset;
 977
 978                 g_assert (td.sp >= td.stack);
 979                 g_assert (td.vt_sp < 0x10000000);
 980                 in_offset = td.ip - header->code;
 981                 td.in_offsets [in_offset] = td.new_ip - td.new_code;
 982                 new_in_start_offset = td.new_ip - td.new_code;
 983                 td.in_start = td.ip;
 984                 while (td.forward_refs [in_offset] >= 0) {
 985                         int j = td.forward_refs [in_offset];
 986                         int slot;
 987                         td.forward_refs [in_offset] = td.forward_refs [j];
 988                         if (td.in_offsets [j] < 0) {
 989                                 int old_switch_offset = -td.in_offsets [j];
 990                                 int new_switch_offset = td.in_offsets [old_switch_offset];
 991                                 int switch_case = (j - old_switch_offset - 5) / 4;
 992                                 int n_cases = read32 (header->code + old_switch_offset + 1);
 993                                 offset = (td.new_ip - td.new_code) - (new_switch_offset + 2 * n_cases + 3);
 994                                 slot = new_switch_offset + 3 + 2 * switch_case;
 995                                 td.new_code [slot] = * (unsigned short *)(&offset);
 996                                 td.new_code [slot + 1] = * ((unsigned short *)&offset + 1);
 997                         } else {
 998                                 int op = td.new_code [td.in_offsets [j]];
 999                                 if (mono_interp_opargtype [op] == MintOpShortBranch) {
1000                                         offset = (td.new_ip - td.new_code) - td.in_offsets [j];
1001                                         g_assert (offset <= 32767);
1002                                         slot = td.in_offsets [j] + 1;
1003                                         td.new_code [slot] = offset;
1004                                 } else {
1005                                         offset = (td.new_ip - td.new_code) - td.in_offsets [j];
1006                                         slot = td.in_offsets [j] + 1;
1007                                         td.new_code [slot] = * (unsigned short *)(&offset);
1008                                         td.new_code [slot + 1] = * ((unsigned short *)&offset + 1);
1009                                 }
1010                         }
1011                 }
1012                 if (td.stack_height [in_offset] >= 0) {
1013                         g_assert (is_bb_start [in_offset]);
1014                         if (td.stack_height [in_offset] > 0)
1015                                 memcpy (td.stack, td.stack_state [in_offset], td.stack_height [in_offset] * sizeof(td.stack [0]));
1016                         td.sp = td.stack + td.stack_height [in_offset];
1017                         td.vt_sp = td.vt_stack_size [in_offset];
1018                 }
1019                 if (is_bb_start [in_offset]) {
1020                         generating_code = 1;
1021                 }
1022                 if (!generating_code) {
1023                         while (td.ip < end && !is_bb_start [td.ip - td.il_code])
1024                                 ++td.ip;
1025                         continue;
1026                 }
1027                 if (mono_interp_traceopt > 1) {
1028                         printf("IL_%04lx %s %-10s -> IL_%04lx, sp %ld, %s %-12s vt_sp %u (max %u)\n",
1029                                 td.ip - td.il_code,
1030                                 td.is_bb_start [td.ip - td.il_code] == 3 ? "<>" :
1031                                 td.is_bb_start [td.ip - td.il_code] == 2 ? "< " :
1032                                 td.is_bb_start [td.ip - td.il_code] == 1 ? " >" : "  ",
1033                                 mono_opcode_name (*td.ip), td.new_ip - td.new_code, td.sp - td.stack,
1034                                 td.sp > td.stack ? stack_type_string [td.sp [-1].type] : "  ",
1035                                 (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) : "",
1036                                 td.vt_sp, td.max_vt_sp);
1037                 }
1038                 switch (*td.ip) {
1039                 case CEE_NOP:
1040                         /* lose it */
1041                         ++td.ip;
1042                         break;
1043                 case CEE_BREAK:
1044                         SIMPLE_OP(td, MINT_BREAK);
1045                         break;
1046                 case CEE_LDARG_0:
1047                 case CEE_LDARG_1:
1048                 case CEE_LDARG_2:
1049                 case CEE_LDARG_3:
1050                         load_arg (&td, *td.ip - CEE_LDARG_0);
1051                         ++td.ip;
1052                         break;
1053                 case CEE_LDLOC_0:
1054                 case CEE_LDLOC_1:
1055                 case CEE_LDLOC_2:
1056                 case CEE_LDLOC_3:
1057                         load_local (&td, *td.ip - CEE_LDLOC_0);
1058                         ++td.ip;
1059                         break;
1060                 case CEE_STLOC_0:
1061                 case CEE_STLOC_1:
1062                 case CEE_STLOC_2:
1063                 case CEE_STLOC_3:
1064                         store_local (&td, *td.ip - CEE_STLOC_0);
1065                         ++td.ip;
1066                         break;
1067                 case CEE_LDARG_S:
1068                         load_arg (&td, ((guint8 *)td.ip)[1]);
1069                         td.ip += 2;
1070                         break;
1071                 case CEE_LDARGA_S: {
1072                         /* NOTE: n includes this */
1073                         int n = ((guint8 *) td.ip) [1];
1074                         ADD_CODE (&td, MINT_LDARGA);
1075                         ADD_CODE (&td, td.rtm->arg_offsets [n]);
1076                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
1077                         td.ip += 2;
1078                         break;
1079                 }
1080                 case CEE_STARG_S:
1081                         store_arg (&td, ((guint8 *)td.ip)[1]);
1082                         td.ip += 2;
1083                         break;
1084                 case CEE_LDLOC_S:
1085                         load_local (&td, ((guint8 *)td.ip)[1]);
1086                         td.ip += 2;
1087                         break;
1088                 case CEE_LDLOCA_S:
1089                         ADD_CODE(&td, MINT_LDLOCA_S);
1090                         ADD_CODE(&td, td.rtm->local_offsets [((guint8 *)td.ip)[1]]);
1091                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
1092                         td.ip += 2;
1093                         break;
1094                 case CEE_STLOC_S:
1095                         store_local (&td, ((guint8 *)td.ip)[1]);
1096                         td.ip += 2;
1097                         break;
1098                 case CEE_LDNULL:
1099                         SIMPLE_OP(td, MINT_LDNULL);
1100                         PUSH_TYPE(&td, STACK_TYPE_O, NULL);
1101                         break;
1102                 case CEE_LDC_I4_M1:
1103                         SIMPLE_OP(td, MINT_LDC_I4_M1);
1104                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1105                         break;
1106                 case CEE_LDC_I4_0:
1107                         if (!td.is_bb_start[td.ip + 1 - td.il_code] && td.ip [1] == 0xfe && td.ip [2] == CEE_CEQ &&
1108                                 td.sp > td.stack && td.sp [-1].type == STACK_TYPE_I4) {
1109                                 SIMPLE_OP(td, MINT_CEQ0_I4);
1110                                 td.ip += 2;
1111                         } else {
1112                                 SIMPLE_OP(td, MINT_LDC_I4_0);
1113                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1114                         }
1115                         break;
1116                 case CEE_LDC_I4_1:
1117                         if (!td.is_bb_start[td.ip + 1 - td.il_code] &&
1118                                 (td.ip [1] == CEE_ADD || td.ip [1] == CEE_SUB) && td.sp [-1].type == STACK_TYPE_I4) {
1119                                 ADD_CODE(&td, td.ip [1] == CEE_ADD ? MINT_ADD1_I4 : MINT_SUB1_I4);
1120                                 td.ip += 2;
1121                         } else {
1122                                 SIMPLE_OP(td, MINT_LDC_I4_1);
1123                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1124                         }
1125                         break;
1126                 case CEE_LDC_I4_2:
1127                 case CEE_LDC_I4_3:
1128                 case CEE_LDC_I4_4:
1129                 case CEE_LDC_I4_5:
1130                 case CEE_LDC_I4_6:
1131                 case CEE_LDC_I4_7:
1132                 case CEE_LDC_I4_8:
1133                         SIMPLE_OP(td, (*td.ip - CEE_LDC_I4_0) + MINT_LDC_I4_0);
1134                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1135                         break;
1136                 case CEE_LDC_I4_S:
1137                         ADD_CODE(&td, MINT_LDC_I4_S);
1138                         ADD_CODE(&td, ((gint8 *) td.ip) [1]);
1139                         td.ip += 2;
1140                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1141                         break;
1142                 case CEE_LDC_I4:
1143                         i32 = read32 (td.ip + 1);
1144                         ADD_CODE(&td, MINT_LDC_I4);
1145                         WRITE32(&td, &i32);
1146                         td.ip += 5;
1147                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
1148                         break;
1149                 case CEE_LDC_I8: {
1150                         gint64 val = read64 (td.ip + 1);
1151                         ADD_CODE(&td, MINT_LDC_I8);
1152                         WRITE64(&td, &val);
1153                         td.ip += 9;
1154                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I8);
1155                         break;
1156                 }
1157                 case CEE_LDC_R4: {
1158                         float val;
1159                         readr4 (td.ip + 1, &val);
1160                         ADD_CODE(&td, MINT_LDC_R4);
1161                         WRITE32(&td, &val);
1162                         td.ip += 5;
1163                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_R8);
1164                         break;
1165                 }
1166                 case CEE_LDC_R8: {
1167                         double val;
1168                         readr8 (td.ip + 1, &val);
1169                         ADD_CODE(&td, MINT_LDC_R8);
1170                         WRITE64(&td, &val);
1171                         td.ip += 9;
1172                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_R8);
1173                         break;
1174                 }
1175                 case CEE_DUP: {
1176                         int type = td.sp [-1].type;
1177                         MonoClass *klass = td.sp [-1].klass;
1178                         if (td.sp [-1].type == STACK_TYPE_VT) {
1179                                 gint32 size = mono_class_value_size (klass, NULL);
1180                                 PUSH_VT(&td, size);
1181                                 ADD_CODE(&td, MINT_DUP_VT);
1182                                 WRITE32(&td, &size);
1183                                 td.ip ++;
1184                         } else
1185                                 SIMPLE_OP(td, MINT_DUP);
1186                         PUSH_TYPE(&td, type, klass);
1187                         break;
1188                 }
1189                 case CEE_POP:
1190                         CHECK_STACK(&td, 1);
1191                         SIMPLE_OP(td, MINT_POP);
1192                         ADD_CODE (&td, 0);
1193                         if (td.sp [-1].type == STACK_TYPE_VT) {
1194                                 int size = mono_class_value_size (td.sp [-1].klass, NULL);
1195                                 size = (size + 7) & ~7;
1196                                 ADD_CODE(&td, MINT_VTRESULT);
1197                                 ADD_CODE(&td, 0);
1198                                 WRITE32(&td, &size);
1199                                 td.vt_sp -= size;
1200                         }
1201                         --td.sp;
1202                         break;
1203                 case CEE_JMP: {
1204                         MonoMethod *m;
1205                         if (td.sp > td.stack)
1206                                 g_warning ("CEE_JMP: stack must be empty");
1207                         token = read32 (td.ip + 1);
1208                         m = mono_get_method_full (image, token, NULL, generic_context);
1209                         ADD_CODE (&td, MINT_JMP);
1210                         ADD_CODE (&td, get_data_item_index (&td, mono_interp_get_runtime_method (domain, m, &error)));
1211                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
1212                         td.ip += 5;
1213                         break;
1214                 }
1215                 case CEE_CALLVIRT: /* Fall through */
1216                 case CEE_CALLI:    /* Fall through */
1217                 case CEE_CALL: {
1218                         interp_transform_call (&td, method, NULL, domain, generic_context, is_bb_start, body_start_offset, constrained_class, readonly);
1219                         constrained_class = NULL;
1220                         readonly = FALSE;
1221                         break;
1222                 }
1223                 case CEE_RET: {
1224                         int vt_size = 0;
1225                         if (signature->ret->type != MONO_TYPE_VOID) {
1226                                 --td.sp;
1227                                 MonoClass *klass = mono_class_from_mono_type (signature->ret);
1228                                 if (mint_type (&klass->byval_arg) == MINT_TYPE_VT) {
1229                                         vt_size = mono_class_value_size (klass, NULL);
1230                                         vt_size = (vt_size + 7) & ~7;
1231                                 }
1232                         }
1233                         if (td.sp > td.stack)
1234                                 g_warning ("%s.%s: CEE_RET: more values on stack: %d", td.method->klass->name, td.method->name, td.sp - td.stack);
1235                         if (td.vt_sp != vt_size)
1236                                 g_error ("%s.%s: CEE_RET: value type stack: %d vs. %d", td.method->klass->name, td.method->name, td.vt_sp, vt_size);
1237                         if (vt_size == 0)
1238                                 SIMPLE_OP(td, signature->ret->type == MONO_TYPE_VOID ? MINT_RET_VOID : MINT_RET);
1239                         else {
1240                                 ADD_CODE(&td, MINT_RET_VT);
1241                                 WRITE32(&td, &vt_size);
1242                                 ++td.ip;
1243                         }
1244                         generating_code = 0;
1245                         break;
1246                 }
1247                 case CEE_BR:
1248                         handle_branch (&td, MINT_BR_S, MINT_BR, 5 + read32 (td.ip + 1));
1249                         td.ip += 5;
1250                         generating_code = 0;
1251                         break;
1252                 case CEE_BR_S:
1253                         handle_branch (&td, MINT_BR_S, MINT_BR, 2 + (gint8)td.ip [1]);
1254                         td.ip += 2;
1255                         generating_code = 0;
1256                         break;
1257                 case CEE_BRFALSE:
1258                         one_arg_branch (&td, MINT_BRFALSE_I4, 5 + read32 (td.ip + 1));
1259                         td.ip += 5;
1260                         break;
1261                 case CEE_BRFALSE_S:
1262                         one_arg_branch (&td, MINT_BRFALSE_I4, 2 + (gint8)td.ip [1]);
1263                         td.ip += 2;
1264                         break;
1265                 case CEE_BRTRUE:
1266                         one_arg_branch (&td, MINT_BRTRUE_I4, 5 + read32 (td.ip + 1));
1267                         td.ip += 5;
1268                         break;
1269                 case CEE_BRTRUE_S:
1270                         one_arg_branch (&td, MINT_BRTRUE_I4, 2 + (gint8)td.ip [1]);
1271                         td.ip += 2;
1272                         break;
1273                 case CEE_BEQ:
1274                         two_arg_branch (&td, MINT_BEQ_I4, 5 + read32 (td.ip + 1));
1275                         td.ip += 5;
1276                         break;
1277                 case CEE_BEQ_S:
1278                         two_arg_branch (&td, MINT_BEQ_I4, 2 + (gint8) td.ip [1]);
1279                         td.ip += 2;
1280                         break;
1281                 case CEE_BGE:
1282                         two_arg_branch (&td, MINT_BGE_I4, 5 + read32 (td.ip + 1));
1283                         td.ip += 5;
1284                         break;
1285                 case CEE_BGE_S:
1286                         two_arg_branch (&td, MINT_BGE_I4, 2 + (gint8) td.ip [1]);
1287                         td.ip += 2;
1288                         break;
1289                 case CEE_BGT:
1290                         two_arg_branch (&td, MINT_BGT_I4, 5 + read32 (td.ip + 1));
1291                         td.ip += 5;
1292                         break;
1293                 case CEE_BGT_S:
1294                         two_arg_branch (&td, MINT_BGT_I4, 2 + (gint8) td.ip [1]);
1295                         td.ip += 2;
1296                         break;
1297                 case CEE_BLT:
1298                         two_arg_branch (&td, MINT_BLT_I4, 5 + read32 (td.ip + 1));
1299                         td.ip += 5;
1300                         break;
1301                 case CEE_BLT_S:
1302                         two_arg_branch (&td, MINT_BLT_I4, 2 + (gint8) td.ip [1]);
1303                         td.ip += 2;
1304                         break;
1305                 case CEE_BLE:
1306                         two_arg_branch (&td, MINT_BLE_I4, 5 + read32 (td.ip + 1));
1307                         td.ip += 5;
1308                         break;
1309                 case CEE_BLE_S:
1310                         two_arg_branch (&td, MINT_BLE_I4, 2 + (gint8) td.ip [1]);
1311                         td.ip += 2;
1312                         break;
1313                 case CEE_BNE_UN:
1314                         two_arg_branch (&td, MINT_BNE_UN_I4, 5 + read32 (td.ip + 1));
1315                         td.ip += 5;
1316                         break;
1317                 case CEE_BNE_UN_S:
1318                         two_arg_branch (&td, MINT_BNE_UN_I4, 2 + (gint8) td.ip [1]);
1319                         td.ip += 2;
1320                         break;
1321                 case CEE_BGE_UN:
1322                         two_arg_branch (&td, MINT_BGE_UN_I4, 5 + read32 (td.ip + 1));
1323                         td.ip += 5;
1324                         break;
1325                 case CEE_BGE_UN_S:
1326                         two_arg_branch (&td, MINT_BGE_UN_I4, 2 + (gint8) td.ip [1]);
1327                         td.ip += 2;
1328                         break;
1329                 case CEE_BGT_UN:
1330                         two_arg_branch (&td, MINT_BGT_UN_I4, 5 + read32 (td.ip + 1));
1331                         td.ip += 5;
1332                         break;
1333                 case CEE_BGT_UN_S:
1334                         two_arg_branch (&td, MINT_BGT_UN_I4, 2 + (gint8) td.ip [1]);
1335                         td.ip += 2;
1336                         break;
1337                 case CEE_BLE_UN:
1338                         two_arg_branch (&td, MINT_BLE_UN_I4, 5 + read32 (td.ip + 1));
1339                         td.ip += 5;
1340                         break;
1341                 case CEE_BLE_UN_S:
1342                         two_arg_branch (&td, MINT_BLE_UN_I4, 2 + (gint8) td.ip [1]);
1343                         td.ip += 2;
1344                         break;
1345                 case CEE_BLT_UN:
1346                         two_arg_branch (&td, MINT_BLT_UN_I4, 5 + read32 (td.ip + 1));
1347                         td.ip += 5;
1348                         break;
1349                 case CEE_BLT_UN_S:
1350                         two_arg_branch (&td, MINT_BLT_UN_I4, 2 + (gint8) td.ip [1]);
1351                         td.ip += 2;
1352                         break;
1353                 case CEE_SWITCH: {
1354                         guint32 n;
1355                         const unsigned char *next_ip;
1356                         const unsigned char *base_ip = td.ip;
1357                         unsigned short *next_new_ip;
1358                         ++td.ip;
1359                         n = read32 (td.ip);
1360                         ADD_CODE (&td, MINT_SWITCH);
1361                         WRITE32 (&td, &n);
1362                         td.ip += 4;
1363                         next_ip = td.ip + n * 4;
1364                         next_new_ip = td.new_ip + n * 2;
1365                         --td.sp;
1366                         int stack_height = td.sp - td.stack;
1367                         for (i = 0; i < n; i++) {
1368                                 offset = read32 (td.ip);
1369                                 target = next_ip - td.il_code + offset;
1370                                 if (offset < 0) {
1371 #if DEBUG_INTERP
1372                                         if (stack_height > 0 && stack_height != td.stack_height [target])
1373                                                 g_warning ("SWITCH with back branch and non-empty stack");
1374 #endif
1375                                         target = td.in_offsets [target] - (next_new_ip - td.new_code);
1376                                 } else {
1377                                         td.stack_height [target] = stack_height;
1378                                         td.vt_stack_size [target] = td.vt_sp;
1379                                         if (stack_height > 0)
1380                                                 td.stack_state [target] = g_memdup (td.stack, stack_height * sizeof (td.stack [0]));
1381                                         int prev = td.forward_refs [target];
1382                                         td.forward_refs [td.ip - td.il_code] = prev;
1383                                         td.forward_refs [target] = td.ip - td.il_code;
1384                                         td.in_offsets [td.ip - td.il_code] = - (base_ip - td.il_code);
1385                                 }
1386                                 WRITE32 (&td, &target);
1387                                 td.ip += 4;
1388                         }
1389                         break;
1390                 }
1391                 case CEE_LDIND_I1:
1392                         CHECK_STACK (&td, 1);
1393                         SIMPLE_OP (td, MINT_LDIND_I1);
1394                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1395                         break;
1396                 case CEE_LDIND_U1:
1397                         CHECK_STACK (&td, 1);
1398                         SIMPLE_OP (td, MINT_LDIND_U1);
1399                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1400                         break;
1401                 case CEE_LDIND_I2:
1402                         CHECK_STACK (&td, 1);
1403                         SIMPLE_OP (td, MINT_LDIND_I2);
1404                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1405                         break;
1406                 case CEE_LDIND_U2:
1407                         CHECK_STACK (&td, 1);
1408                         SIMPLE_OP (td, MINT_LDIND_U2);
1409                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1410                         break;
1411                 case CEE_LDIND_I4:
1412                         CHECK_STACK (&td, 1);
1413                         SIMPLE_OP (td, MINT_LDIND_I4);
1414                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1415                         break;
1416                 case CEE_LDIND_U4:
1417                         CHECK_STACK (&td, 1);
1418                         SIMPLE_OP (td, MINT_LDIND_U4);
1419                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1420                         break;
1421                 case CEE_LDIND_I8:
1422                         CHECK_STACK (&td, 1);
1423                         SIMPLE_OP (td, MINT_LDIND_I8);
1424                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1425                         break;
1426                 case CEE_LDIND_I:
1427                         CHECK_STACK (&td, 1);
1428                         SIMPLE_OP (td, MINT_LDIND_I);
1429                         ADD_CODE (&td, 0);
1430                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1431                         break;
1432                 case CEE_LDIND_R4:
1433                         CHECK_STACK (&td, 1);
1434                         SIMPLE_OP (td, MINT_LDIND_R4);
1435                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1436                         break;
1437                 case CEE_LDIND_R8:
1438                         CHECK_STACK (&td, 1);
1439                         SIMPLE_OP (td, MINT_LDIND_R8);
1440                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1441                         break;
1442                 case CEE_LDIND_REF:
1443                         CHECK_STACK (&td, 1);
1444                         SIMPLE_OP (td, MINT_LDIND_REF);
1445                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
1446                         break;
1447                 case CEE_STIND_REF:
1448                         CHECK_STACK (&td, 2);
1449                         SIMPLE_OP (td, MINT_STIND_REF);
1450                         td.sp -= 2;
1451                         break;
1452                 case CEE_STIND_I1:
1453                         CHECK_STACK (&td, 2);
1454                         SIMPLE_OP (td, MINT_STIND_I1);
1455                         td.sp -= 2;
1456                         break;
1457                 case CEE_STIND_I2:
1458                         CHECK_STACK (&td, 2);
1459                         SIMPLE_OP (td, MINT_STIND_I2);
1460                         td.sp -= 2;
1461                         break;
1462                 case CEE_STIND_I4:
1463                         CHECK_STACK (&td, 2);
1464                         SIMPLE_OP (td, MINT_STIND_I4);
1465                         td.sp -= 2;
1466                         break;
1467                 case CEE_STIND_I:
1468                         CHECK_STACK (&td, 2);
1469                         SIMPLE_OP (td, MINT_STIND_I);
1470                         td.sp -= 2;
1471                         break;
1472                 case CEE_STIND_I8:
1473                         CHECK_STACK (&td, 2);
1474                         SIMPLE_OP (td, MINT_STIND_I8);
1475                         td.sp -= 2;
1476                         break;
1477                 case CEE_STIND_R4:
1478                         CHECK_STACK (&td, 2);
1479                         SIMPLE_OP (td, MINT_STIND_R4);
1480                         td.sp -= 2;
1481                         break;
1482                 case CEE_STIND_R8:
1483                         CHECK_STACK (&td, 2);
1484                         SIMPLE_OP (td, MINT_STIND_R8);
1485                         td.sp -= 2;
1486                         break;
1487                 case CEE_ADD:
1488                         binary_arith_op(&td, MINT_ADD_I4);
1489                         ++td.ip;
1490                         break;
1491                 case CEE_SUB:
1492                         binary_arith_op(&td, MINT_SUB_I4);
1493                         ++td.ip;
1494                         break;
1495                 case CEE_MUL:
1496                         binary_arith_op(&td, MINT_MUL_I4);
1497                         ++td.ip;
1498                         break;
1499                 case CEE_DIV:
1500                         binary_arith_op(&td, MINT_DIV_I4);
1501                         ++td.ip;
1502                         break;
1503                 case CEE_DIV_UN:
1504                         binary_arith_op(&td, MINT_DIV_UN_I4);
1505                         ++td.ip;
1506                         break;
1507                 case CEE_REM:
1508                         binary_int_op (&td, MINT_REM_I4);
1509                         ++td.ip;
1510                         break;
1511                 case CEE_REM_UN:
1512                         binary_int_op (&td, MINT_REM_UN_I4);
1513                         ++td.ip;
1514                         break;
1515                 case CEE_AND:
1516                         binary_int_op (&td, MINT_AND_I4);
1517                         ++td.ip;
1518                         break;
1519                 case CEE_OR:
1520                         binary_int_op (&td, MINT_OR_I4);
1521                         ++td.ip;
1522                         break;
1523                 case CEE_XOR:
1524                         binary_int_op (&td, MINT_XOR_I4);
1525                         ++td.ip;
1526                         break;
1527                 case CEE_SHL:
1528                         shift_op (&td, MINT_SHL_I4);
1529                         ++td.ip;
1530                         break;
1531                 case CEE_SHR:
1532                         shift_op (&td, MINT_SHR_I4);
1533                         ++td.ip;
1534                         break;
1535                 case CEE_SHR_UN:
1536                         shift_op (&td, MINT_SHR_UN_I4);
1537                         ++td.ip;
1538                         break;
1539                 case CEE_NEG:
1540                         unary_arith_op (&td, MINT_NEG_I4);
1541                         ++td.ip;
1542                         break;
1543                 case CEE_NOT:
1544                         unary_arith_op (&td, MINT_NOT_I4);
1545                         ++td.ip;
1546                         break;
1547                 case CEE_CONV_U1:
1548                         CHECK_STACK (&td, 1);
1549                         switch (td.sp [-1].type) {
1550                         case STACK_TYPE_R8:
1551                                 ADD_CODE(&td, MINT_CONV_U1_R8);
1552                                 break;
1553                         case STACK_TYPE_I4:
1554                                 ADD_CODE(&td, MINT_CONV_U1_I4);
1555                                 break;
1556                         case STACK_TYPE_I8:
1557                                 ADD_CODE(&td, MINT_CONV_U1_I8);
1558                                 break;
1559                         default:
1560                                 g_assert_not_reached ();
1561                         }
1562                         ++td.ip;
1563                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1564                         break;
1565                 case CEE_CONV_I1:
1566                         CHECK_STACK (&td, 1);
1567                         switch (td.sp [-1].type) {
1568                         case STACK_TYPE_R8:
1569                                 ADD_CODE(&td, MINT_CONV_I1_R8);
1570                                 break;
1571                         case STACK_TYPE_I4:
1572                                 ADD_CODE(&td, MINT_CONV_I1_I4);
1573                                 break;
1574                         case STACK_TYPE_I8:
1575                                 ADD_CODE(&td, MINT_CONV_I1_I8);
1576                                 break;
1577                         default:
1578                                 g_assert_not_reached ();
1579                         }
1580                         ++td.ip;
1581                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1582                         break;
1583                 case CEE_CONV_U2:
1584                         CHECK_STACK (&td, 1);
1585                         switch (td.sp [-1].type) {
1586                         case STACK_TYPE_R8:
1587                                 ADD_CODE(&td, MINT_CONV_U2_R8);
1588                                 break;
1589                         case STACK_TYPE_I4:
1590                                 ADD_CODE(&td, MINT_CONV_U2_I4);
1591                                 break;
1592                         case STACK_TYPE_I8:
1593                                 ADD_CODE(&td, MINT_CONV_U2_I8);
1594                                 break;
1595                         default:
1596                                 g_assert_not_reached ();
1597                         }
1598                         ++td.ip;
1599                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1600                         break;
1601                 case CEE_CONV_I2:
1602                         CHECK_STACK (&td, 1);
1603                         switch (td.sp [-1].type) {
1604                         case STACK_TYPE_R8:
1605                                 ADD_CODE(&td, MINT_CONV_I2_R8);
1606                                 break;
1607                         case STACK_TYPE_I4:
1608                                 ADD_CODE(&td, MINT_CONV_I2_I4);
1609                                 break;
1610                         case STACK_TYPE_I8:
1611                                 ADD_CODE(&td, MINT_CONV_I2_I8);
1612                                 break;
1613                         default:
1614                                 g_assert_not_reached ();
1615                         }
1616                         ++td.ip;
1617                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1618                         break;
1619                 case CEE_CONV_U:
1620                         CHECK_STACK (&td, 1);
1621                         switch (td.sp [-1].type) {
1622                         case STACK_TYPE_R8:
1623 #if SIZEOF_VOID_P == 4
1624                                 ADD_CODE(&td, MINT_CONV_U4_R8);
1625 #else
1626                                 ADD_CODE(&td, MINT_CONV_U8_R8);
1627 #endif
1628                                 break;
1629                         case STACK_TYPE_I4:
1630 #if SIZEOF_VOID_P == 8
1631                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1632 #endif
1633                                 break;
1634                         case STACK_TYPE_I8:
1635 #if SIZEOF_VOID_P == 4
1636                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1637 #endif
1638                                 break;
1639                         case STACK_TYPE_MP:
1640                                 break;
1641                         default:
1642                                 g_assert_not_reached ();
1643                         }
1644                         ++td.ip;
1645                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1646                         break;
1647                 case CEE_CONV_I:
1648                         CHECK_STACK (&td, 1);
1649                         switch (td.sp [-1].type) {
1650                         case STACK_TYPE_R8:
1651 #if SIZEOF_VOID_P == 8
1652                                 ADD_CODE(&td, MINT_CONV_I8_R8);
1653 #else
1654                                 ADD_CODE(&td, MINT_CONV_I4_R8);
1655 #endif
1656                                 break;
1657                         case STACK_TYPE_I4:
1658 #if SIZEOF_VOID_P == 8
1659                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1660 #endif
1661                                 break;
1662                         case STACK_TYPE_O:
1663                                 break;
1664                         case STACK_TYPE_MP:
1665                                 break;
1666                         case STACK_TYPE_I8:
1667 #if SIZEOF_VOID_P == 4
1668                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1669 #endif
1670                                 break;
1671                         default:
1672                                 g_assert_not_reached ();
1673                         }
1674                         ++td.ip;
1675                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1676                         break;
1677                 case CEE_CONV_U4:
1678                         CHECK_STACK (&td, 1);
1679                         switch (td.sp [-1].type) {
1680                         case STACK_TYPE_R8:
1681                                 ADD_CODE(&td, MINT_CONV_U4_R8);
1682                                 break;
1683                         case STACK_TYPE_I4:
1684                                 break;
1685                         case STACK_TYPE_I8:
1686                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1687                                 break;
1688                         case STACK_TYPE_MP:
1689 #if SIZEOF_VOID_P == 8
1690                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1691 #endif
1692                                 break;
1693                         default:
1694                                 g_assert_not_reached ();
1695                         }
1696                         ++td.ip;
1697                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1698                         break;
1699                 case CEE_CONV_I4:
1700                         CHECK_STACK (&td, 1);
1701                         switch (td.sp [-1].type) {
1702                         case STACK_TYPE_R8:
1703                                 ADD_CODE(&td, MINT_CONV_I4_R8);
1704                                 break;
1705                         case STACK_TYPE_I4:
1706                                 break;
1707                         case STACK_TYPE_I8:
1708                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1709                                 break;
1710                         case STACK_TYPE_MP:
1711 #if SIZEOF_VOID_P == 8
1712                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1713 #endif
1714                                 break;
1715                         default:
1716                                 g_assert_not_reached ();
1717                         }
1718                         ++td.ip;
1719                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1720                         break;
1721                 case CEE_CONV_I8:
1722                         CHECK_STACK (&td, 1);
1723                         switch (td.sp [-1].type) {
1724                         case STACK_TYPE_R8:
1725                                 ADD_CODE(&td, MINT_CONV_I8_R8);
1726                                 break;
1727                         case STACK_TYPE_I4:
1728                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1729                                 break;
1730                         case STACK_TYPE_I8:
1731                                 break;
1732                         case STACK_TYPE_MP:
1733 #if SIZEOF_VOID_P == 4
1734                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1735 #endif
1736                                 break;
1737                         default:
1738                                 g_assert_not_reached ();
1739                         }
1740                         ++td.ip;
1741                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1742                         break;
1743                 case CEE_CONV_R4:
1744                         CHECK_STACK (&td, 1);
1745                         switch (td.sp [-1].type) {
1746                         case STACK_TYPE_R8:
1747                                 ADD_CODE(&td, MINT_CONV_R4_R8);
1748                                 break;
1749                         case STACK_TYPE_I8:
1750                                 ADD_CODE(&td, MINT_CONV_R4_I8);
1751                                 break;
1752                         case STACK_TYPE_I4:
1753                                 ADD_CODE(&td, MINT_CONV_R4_I4);
1754                                 break;
1755                         default:
1756                                 g_assert_not_reached ();
1757                         }
1758                         ++td.ip;
1759                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1760                         break;
1761                 case CEE_CONV_R8:
1762                         CHECK_STACK (&td, 1);
1763                         switch (td.sp [-1].type) {
1764                         case STACK_TYPE_I4:
1765                                 ADD_CODE(&td, MINT_CONV_R8_I4);
1766                                 break;
1767                         case STACK_TYPE_I8:
1768                                 ADD_CODE(&td, MINT_CONV_R8_I8);
1769                                 break;
1770                         case STACK_TYPE_R8:
1771                                 break;
1772                         default:
1773                                 g_assert_not_reached ();
1774                         }
1775                         ++td.ip;
1776                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1777                         break;
1778                 case CEE_CONV_U8:
1779                         CHECK_STACK (&td, 1);
1780                         switch (td.sp [-1].type) {
1781                         case STACK_TYPE_I4:
1782                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1783                                 break;
1784                         case STACK_TYPE_I8:
1785                                 break;
1786                         case STACK_TYPE_R8:
1787                                 ADD_CODE(&td, MINT_CONV_U8_R8);
1788                                 break;
1789                         case STACK_TYPE_MP:
1790 #if SIZEOF_VOID_P == 4
1791                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1792 #endif
1793                                 break;
1794                         default:
1795                                 g_assert_not_reached ();
1796                         }
1797                         ++td.ip;
1798                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1799                         break;
1800                 case CEE_CPOBJ: {
1801                         CHECK_STACK (&td, 2);
1802
1803                         token = read32 (td.ip + 1);
1804                         klass = mono_class_get_full (image, token, generic_context);
1805
1806                         if (klass->valuetype) {
1807                                 ADD_CODE (&td, MINT_CPOBJ);
1808                                 ADD_CODE (&td, get_data_item_index(&td, klass));
1809                         } else {
1810                                 ADD_CODE (&td, MINT_LDIND_REF);
1811                                 ADD_CODE (&td, MINT_STIND_REF);
1812                         }
1813                         td.ip += 5;
1814                         td.sp -= 2;
1815                         break;
1816                 }
1817                 case CEE_LDOBJ: {
1818                         int size;
1819                         CHECK_STACK (&td, 1);
1820
1821                         token = read32 (td.ip + 1);
1822
1823                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1824                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1825                         else
1826                                 klass = mono_class_get_full (image, token, generic_context);
1827
1828                         ADD_CODE(&td, MINT_LDOBJ);
1829                         ADD_CODE(&td, get_data_item_index(&td, klass));
1830                         if (mint_type (&klass->byval_arg) == MINT_TYPE_VT) {
1831                                 size = mono_class_value_size (klass, NULL);
1832                                 PUSH_VT(&td, size);
1833                         }
1834                         td.ip += 5;
1835                         SET_TYPE(td.sp - 1, stack_type[mint_type(&klass->byval_arg)], klass);
1836                         break;
1837                 }
1838                 case CEE_LDSTR: {
1839                         MonoString *s;
1840                         token = mono_metadata_token_index (read32 (td.ip + 1));
1841                         td.ip += 5;
1842                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
1843                                 s = mono_string_new_wrapper(
1844                                         mono_method_get_wrapper_data (method, token));
1845                         }
1846                         else
1847                                 s = mono_ldstr (domain, image, token);
1848                         ADD_CODE(&td, MINT_LDSTR);
1849                         ADD_CODE(&td, get_data_item_index (&td, s));
1850                         PUSH_TYPE(&td, STACK_TYPE_O, mono_defaults.string_class);
1851                         break;
1852                 }
1853                 case CEE_NEWOBJ: {
1854                         MonoMethod *m;
1855                         MonoMethodSignature *csignature;
1856                         guint32 vt_stack_used = 0;
1857                         guint32 vt_res_size = 0;
1858
1859                         td.ip++;
1860                         token = read32 (td.ip);
1861                         td.ip += 4;
1862
1863                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1864                                 m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
1865                         else
1866                                 m = mono_get_method_full (image, token, NULL, generic_context);
1867
1868                         csignature = mono_method_signature (m);
1869                         klass = m->klass;
1870                         td.sp -= csignature->param_count;
1871                         ADD_CODE(&td, MINT_NEWOBJ);
1872                         ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (domain, m, &error)));
1873                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
1874
1875                         if (mint_type (&klass->byval_arg) == MINT_TYPE_VT) {
1876                                 vt_res_size = mono_class_value_size (klass, NULL);
1877                                 PUSH_VT (&td, vt_res_size);
1878                         }
1879                         for (i = 0; i < csignature->param_count; ++i) {
1880                                 int mt = mint_type(csignature->params [i]);
1881                                 if (mt == MINT_TYPE_VT) {
1882                                         MonoClass *k = mono_class_from_mono_type (csignature->params [i]);
1883                                         gint32 size = mono_class_value_size (k, NULL);
1884                                         size = (size + 7) & ~7;
1885                                         vt_stack_used += size;
1886                                 }
1887                         }
1888                         if (vt_stack_used != 0 || vt_res_size != 0) {
1889                                 ADD_CODE(&td, MINT_VTRESULT);
1890                                 ADD_CODE(&td, vt_res_size);
1891                                 WRITE32(&td, &vt_stack_used);
1892                                 td.vt_sp -= vt_stack_used;
1893                         }
1894                         PUSH_TYPE (&td, stack_type [mint_type (&klass->byval_arg)], klass);
1895                         break;
1896                 }
1897                 case CEE_CASTCLASS:
1898                         CHECK_STACK (&td, 1);
1899                         token = read32 (td.ip + 1);
1900                         klass = mono_class_get_full (image, token, generic_context);
1901                         ADD_CODE(&td, MINT_CASTCLASS);
1902                         ADD_CODE(&td, get_data_item_index (&td, klass));
1903                         td.sp [-1].klass = klass;
1904                         td.ip += 5;
1905                         break;
1906                 case CEE_ISINST:
1907                         CHECK_STACK (&td, 1);
1908                         token = read32 (td.ip + 1);
1909                         klass = mono_class_get_full (image, token, generic_context);
1910                         ADD_CODE(&td, MINT_ISINST);
1911                         ADD_CODE(&td, get_data_item_index (&td, klass));
1912                         td.ip += 5;
1913                         break;
1914                 case CEE_CONV_R_UN:
1915                         switch (td.sp [-1].type) {
1916                         case STACK_TYPE_R8:
1917                                 break;
1918                         case STACK_TYPE_I8:
1919                                 ADD_CODE(&td, MINT_CONV_R_UN_I8);
1920                                 break;
1921                         case STACK_TYPE_I4:
1922                                 ADD_CODE(&td, MINT_CONV_R_UN_I4);
1923                                 break;
1924                         default:
1925                                 g_assert_not_reached ();
1926                         }
1927                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1928                         ++td.ip;
1929                         break;
1930                 case CEE_UNBOX:
1931                         CHECK_STACK (&td, 1);
1932                         token = read32 (td.ip + 1);
1933
1934                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1935                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1936                         else
1937                                 klass = mono_class_get_full (image, token, generic_context);
1938
1939                         if (mono_class_is_nullable (klass)) {
1940                                 g_error ("cee_unbox: implement Nullable");
1941                         }
1942
1943                         ADD_CODE(&td, MINT_UNBOX);
1944                         ADD_CODE(&td, get_data_item_index (&td, klass));
1945                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
1946                         td.ip += 5;
1947                         break;
1948                 case CEE_UNBOX_ANY:
1949                         CHECK_STACK (&td, 1);
1950                         token = read32 (td.ip + 1);
1951
1952                         g_assert (method->wrapper_type == MONO_WRAPPER_NONE);
1953                         klass = mono_class_get_full (image, token, generic_context);
1954
1955                         if (mini_type_is_reference (&klass->byval_arg)) {
1956                                 ADD_CODE (&td, MINT_CASTCLASS);
1957                                 ADD_CODE (&td, get_data_item_index (&td, klass));
1958                                 SET_TYPE (td.sp - 1, stack_type [mt], klass);
1959                                 td.ip += 5;
1960                         } else if (mono_class_is_nullable (klass)) {
1961                                 MonoMethod *target_method = mono_class_get_method_from_name (klass, "Unbox", 1);
1962                                 /* td.ip is incremented by interp_transform_call */
1963                                 interp_transform_call (&td, method, target_method, domain, generic_context, is_bb_start, body_start_offset, NULL, FALSE);
1964                         } else {
1965                                 int mt = mint_type (&klass->byval_arg);
1966                                 ADD_CODE (&td, MINT_UNBOX);
1967                                 ADD_CODE (&td, get_data_item_index (&td, klass));
1968
1969                                 ADD_CODE (&td, MINT_LDOBJ);
1970                                 ADD_CODE (&td, get_data_item_index(&td, klass));
1971                                 SET_TYPE (td.sp - 1, stack_type [mt], klass);
1972
1973                                 if (mt == MINT_TYPE_VT) {
1974                                         int size = mono_class_value_size (klass, NULL);
1975                                         PUSH_VT (&td, size);
1976                                 }
1977                                 td.ip += 5;
1978                         }
1979
1980                         break;
1981                 case CEE_THROW:
1982                         CHECK_STACK (&td, 1);
1983                         SIMPLE_OP (td, MINT_THROW);
1984                         --td.sp;
1985                         generating_code = 0;
1986                         break;
1987                 case CEE_LDFLDA:
1988                         CHECK_STACK (&td, 1);
1989                         token = read32 (td.ip + 1);
1990                         field = mono_field_from_token (image, token, &klass, generic_context);
1991                         gboolean is_static = !!(field->type->attrs & FIELD_ATTRIBUTE_STATIC);
1992                         mono_class_init (klass);
1993                         if (is_static) {
1994                                 ADD_CODE (&td, MINT_POP);
1995                                 ADD_CODE (&td, 0);
1996                                 ADD_CODE (&td, MINT_LDSFLDA);
1997                                 ADD_CODE (&td, get_data_item_index (&td, field));
1998                         } else {
1999                                 if ((td.sp - 1)->type == STACK_TYPE_O) {
2000                                         ADD_CODE (&td, MINT_LDFLDA);
2001                                 } else {
2002                                         g_assert ((td.sp -1)->type == STACK_TYPE_MP);
2003                                         ADD_CODE (&td, MINT_LDFLDA_UNSAFE);
2004                                 }
2005                                 ADD_CODE (&td, klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
2006                         }
2007                         td.ip += 5;
2008                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2009                         break;
2010                 case CEE_LDFLD: {
2011                         CHECK_STACK (&td, 1);
2012                         token = read32 (td.ip + 1);
2013                         field = mono_field_from_token (image, token, &klass, generic_context);
2014                         gboolean is_static = !!(field->type->attrs & FIELD_ATTRIBUTE_STATIC);
2015                         mono_class_init (klass);
2016
2017                         MonoClass *field_klass = mono_class_from_mono_type (field->type);
2018                         mt = mint_type (&field_klass->byval_arg);
2019                         if (klass->marshalbyref) {
2020                                 g_assert (!is_static);
2021                                 ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_LDRMFLD_VT :  MINT_LDRMFLD);
2022                                 ADD_CODE(&td, get_data_item_index (&td, field));
2023                         } else  {
2024                                 if (is_static) {
2025                                         ADD_CODE (&td, MINT_POP);
2026                                         ADD_CODE (&td, 0);
2027                                         ADD_CODE (&td, mt == MINT_TYPE_VT ? MINT_LDSFLD_VT : MINT_LDSFLD);
2028                                         ADD_CODE (&td, get_data_item_index (&td, field));
2029                                 } else {
2030                                         ADD_CODE (&td, MINT_LDFLD_I1 + mt - MINT_TYPE_I1);
2031                                         ADD_CODE (&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
2032                                 }
2033                         }
2034                         if (mt == MINT_TYPE_VT) {
2035                                 int size = mono_class_value_size (field_klass, NULL);
2036                                 PUSH_VT(&td, size);
2037                                 WRITE32(&td, &size);
2038                         }
2039                         if (td.sp [-1].type == STACK_TYPE_VT) {
2040                                 int size = mono_class_value_size (klass, NULL);
2041                                 size = (size + 7) & ~7;
2042                                 td.vt_sp -= size;
2043                                 ADD_CODE (&td, MINT_VTRESULT);
2044                                 ADD_CODE (&td, 0);
2045                                 WRITE32 (&td, &size);
2046                         }
2047                         td.ip += 5;
2048                         SET_TYPE(td.sp - 1, stack_type [mt], field_klass);
2049                         break;
2050                 }
2051                 case CEE_STFLD: {
2052                         CHECK_STACK (&td, 2);
2053                         token = read32 (td.ip + 1);
2054                         field = mono_field_from_token (image, token, &klass, generic_context);
2055                         gboolean is_static = !!(field->type->attrs & FIELD_ATTRIBUTE_STATIC);
2056                         mono_class_init (klass);
2057                         mt = mint_type(field->type);
2058
2059                         if (klass->marshalbyref) {
2060                                 g_assert (!is_static);
2061                                 ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_STRMFLD_VT : MINT_STRMFLD);
2062                                 ADD_CODE(&td, get_data_item_index (&td, field));
2063                         } else  {
2064                                 if (is_static) {
2065                                         ADD_CODE (&td, MINT_POP);
2066                                         ADD_CODE (&td, 1);
2067                                         ADD_CODE (&td, mt == MINT_TYPE_VT ? MINT_STSFLD_VT : MINT_STSFLD);
2068                                         ADD_CODE (&td, get_data_item_index (&td, field));
2069                                 } else {
2070                                         ADD_CODE (&td, MINT_STFLD_I1 + mt - MINT_TYPE_I1);
2071                                         ADD_CODE (&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
2072                                 }
2073                         }
2074                         if (mt == MINT_TYPE_VT) {
2075                                 MonoClass *klass = mono_class_from_mono_type (field->type);
2076                                 int size = mono_class_value_size (klass, NULL);
2077                                 POP_VT(&td, size);
2078                                 WRITE32(&td, &size);
2079                         }
2080                         td.ip += 5;
2081                         td.sp -= 2;
2082                         break;
2083                 }
2084                 case CEE_LDSFLDA:
2085                         token = read32 (td.ip + 1);
2086                         field = mono_field_from_token (image, token, &klass, generic_context);
2087                         ADD_CODE(&td, MINT_LDSFLDA);
2088                         ADD_CODE(&td, get_data_item_index (&td, field));
2089                         td.ip += 5;
2090                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
2091                         break;
2092                 case CEE_LDSFLD:
2093                         token = read32 (td.ip + 1);
2094                         field = mono_field_from_token (image, token, &klass, generic_context);
2095                         mt = mint_type(field->type);
2096                         ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_LDSFLD_VT : MINT_LDSFLD);
2097                         ADD_CODE(&td, get_data_item_index (&td, field));
2098                         klass = NULL;
2099                         if (mt == MINT_TYPE_VT) {
2100                                 MonoClass *klass = mono_class_from_mono_type (field->type);
2101                                 int size = mono_class_value_size (klass, NULL);
2102                                 PUSH_VT(&td, size);
2103                                 WRITE32(&td, &size);
2104                                 klass = field->type->data.klass;
2105                         } else {
2106                                 if (mt == MINT_TYPE_O)
2107                                         klass = mono_class_from_mono_type (field->type);
2108                         }
2109                         td.ip += 5;
2110                         PUSH_TYPE(&td, stack_type [mt], klass);
2111                         break;
2112                 case CEE_STSFLD:
2113                         CHECK_STACK (&td, 1);
2114                         token = read32 (td.ip + 1);
2115                         field = mono_field_from_token (image, token, &klass, generic_context);
2116                         mt = mint_type(field->type);
2117                         ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_STSFLD_VT : MINT_STSFLD);
2118                         ADD_CODE(&td, get_data_item_index (&td, field));
2119                         if (mt == MINT_TYPE_VT) {
2120                                 MonoClass *klass = mono_class_from_mono_type (field->type);
2121                                 int size = mono_class_value_size (klass, NULL);
2122                                 POP_VT (&td, size);
2123                                 WRITE32 (&td, &size);
2124                         }
2125                         td.ip += 5;
2126                         --td.sp;
2127                         break;
2128                 case CEE_STOBJ: {
2129                         int size;
2130                         token = read32 (td.ip + 1);
2131
2132                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2133                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2134                         else
2135                                 klass = mono_class_get_full (image, token, generic_context);
2136
2137                         ADD_CODE(&td, td.sp [-1].type == STACK_TYPE_VT ? MINT_STOBJ_VT : MINT_STOBJ);
2138                         ADD_CODE(&td, get_data_item_index (&td, klass));
2139                         if (td.sp [-1].type == STACK_TYPE_VT) {
2140                                 size = mono_class_value_size (klass, NULL);
2141                                 size = (size + 7) & ~7;
2142                                 td.vt_sp -= size;
2143                         }
2144                         td.ip += 5;
2145                         td.sp -= 2;
2146                         break;
2147                 }
2148                 case CEE_CONV_OVF_I_UN:
2149                 case CEE_CONV_OVF_U_UN:
2150                         CHECK_STACK (&td, 1);
2151                         switch (td.sp [-1].type) {
2152                         case STACK_TYPE_R8:
2153 #if SIZEOF_VOID_P == 8
2154                                 ADD_CODE(&td, MINT_CONV_OVF_I8_UN_R8);
2155 #else
2156                                 ADD_CODE(&td, MINT_CONV_OVF_I4_UN_R8);
2157 #endif
2158                                 break;
2159                         case STACK_TYPE_I8:
2160 #if SIZEOF_VOID_P == 4
2161                                 ADD_CODE (&td, MINT_CONV_OVF_I4_UN_I8);
2162 #endif
2163                                 break;
2164                         case STACK_TYPE_I4:
2165 #if SIZEOF_VOID_P == 8
2166                                 ADD_CODE(&td, MINT_CONV_I8_U4);
2167 #endif
2168                                 break;
2169                         default:
2170                                 g_assert_not_reached ();
2171                                 break;
2172                         }
2173                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2174                         ++td.ip;
2175                         break;
2176                 case CEE_CONV_OVF_I8_UN:
2177                 case CEE_CONV_OVF_U8_UN:
2178                         CHECK_STACK (&td, 1);
2179                         switch (td.sp [-1].type) {
2180                         case STACK_TYPE_R8:
2181                                 ADD_CODE(&td, MINT_CONV_OVF_I8_UN_R8);
2182                                 break;
2183                         case STACK_TYPE_I8:
2184                                 if (*td.ip == CEE_CONV_OVF_I8_UN)
2185                                         ADD_CODE (&td, MINT_CONV_OVF_I8_U8);
2186                                 break;
2187                         case STACK_TYPE_I4:
2188                                 ADD_CODE(&td, MINT_CONV_I8_U4);
2189                                 break;
2190                         default:
2191                                 g_assert_not_reached ();
2192                                 break;
2193                         }
2194                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2195                         ++td.ip;
2196                         break;
2197                 case CEE_BOX: {
2198                         int size;
2199                         CHECK_STACK (&td, 1);
2200                         token = read32 (td.ip + 1);
2201                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2202                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2203                         else
2204                                 klass = mono_class_get_full (image, token, generic_context);
2205
2206                         if (mono_class_is_nullable (klass)) {
2207                                 MonoMethod *target_method = mono_class_get_method_from_name (klass, "Box", 1);
2208                                 /* td.ip is incremented by interp_transform_call */
2209                                 interp_transform_call (&td, method, target_method, domain, generic_context, is_bb_start, body_start_offset, NULL, FALSE);
2210                         } else if (!klass->valuetype) {
2211                                 /* already boxed, do nothing. */
2212                                 td.ip += 5;
2213                         } else {
2214                                 if (mint_type (&klass->byval_arg) == MINT_TYPE_VT && !klass->enumtype) {
2215                                         size = mono_class_value_size (klass, NULL);
2216                                         size = (size + 7) & ~7;
2217                                         td.vt_sp -= size;
2218                                 }
2219                                 ADD_CODE(&td, MINT_BOX);
2220                                 ADD_CODE(&td, get_data_item_index (&td, klass));
2221                                 ADD_CODE (&td, 0);
2222                                 SET_TYPE(td.sp - 1, STACK_TYPE_O, klass);
2223                                 td.ip += 5;
2224                         }
2225
2226                         break;
2227                 }
2228                 case CEE_NEWARR: {
2229                         CHECK_STACK (&td, 1);
2230                         token = read32 (td.ip + 1);
2231
2232                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2233                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2234                         else
2235                                 klass = mono_class_get_full (image, token, generic_context);
2236
2237                         unsigned char lentype = (td.sp - 1)->type;
2238                         if (lentype == STACK_TYPE_I8) {
2239                                 /* mimic mini behaviour */
2240                                 ADD_CODE (&td, MINT_CONV_OVF_U4_I8);
2241                         } else {
2242                                 g_assert (lentype == STACK_TYPE_I4);
2243                                 ADD_CODE (&td, MINT_CONV_OVF_U4_I4);
2244                         }
2245                         SET_SIMPLE_TYPE (td.sp - 1, STACK_TYPE_I4);
2246                         ADD_CODE (&td, MINT_NEWARR);
2247                         ADD_CODE (&td, get_data_item_index (&td, klass));
2248                         SET_TYPE (td.sp - 1, STACK_TYPE_O, klass);
2249                         td.ip += 5;
2250                         break;
2251                 }
2252                 case CEE_LDLEN:
2253                         CHECK_STACK (&td, 1);
2254                         SIMPLE_OP (td, MINT_LDLEN);
2255                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2256                         break;
2257                 case CEE_LDELEMA:
2258                         CHECK_STACK (&td, 2);
2259                         ENSURE_I4 (&td, 1);
2260                         token = read32 (td.ip + 1);
2261
2262                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2263                                 klass = (MonoClass *) mono_method_get_wrapper_data (method, token);
2264                         else
2265                                 klass = mono_class_get_full (image, token, generic_context);
2266
2267                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
2268                                 ADD_CODE (&td, MINT_LDELEMA_TC);
2269                         } else {
2270                                 ADD_CODE (&td, MINT_LDELEMA);
2271                         }
2272                         ADD_CODE (&td, get_data_item_index (&td, klass));
2273                         /* according to spec, ldelema bytecode is only used for 1-dim arrays */
2274                         ADD_CODE (&td, 2);
2275                         readonly = FALSE;
2276
2277                         td.ip += 5;
2278                         --td.sp;
2279                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2280                         break;
2281                 case CEE_LDELEM_I1:
2282                         CHECK_STACK (&td, 2);
2283                         ENSURE_I4 (&td, 1);
2284                         SIMPLE_OP (td, MINT_LDELEM_I1);
2285                         --td.sp;
2286                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2287                         break;
2288                 case CEE_LDELEM_U1:
2289                         CHECK_STACK (&td, 2);
2290                         ENSURE_I4 (&td, 1);
2291                         SIMPLE_OP (td, MINT_LDELEM_U1);
2292                         --td.sp;
2293                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2294                         break;
2295                 case CEE_LDELEM_I2:
2296                         CHECK_STACK (&td, 2);
2297                         ENSURE_I4 (&td, 1);
2298                         SIMPLE_OP (td, MINT_LDELEM_I2);
2299                         --td.sp;
2300                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2301                         break;
2302                 case CEE_LDELEM_U2:
2303                         CHECK_STACK (&td, 2);
2304                         ENSURE_I4 (&td, 1);
2305                         SIMPLE_OP (td, MINT_LDELEM_U2);
2306                         --td.sp;
2307                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2308                         break;
2309                 case CEE_LDELEM_I4:
2310                         CHECK_STACK (&td, 2);
2311                         ENSURE_I4 (&td, 1);
2312                         SIMPLE_OP (td, MINT_LDELEM_I4);
2313                         --td.sp;
2314                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2315                         break;
2316                 case CEE_LDELEM_U4:
2317                         CHECK_STACK (&td, 2);
2318                         ENSURE_I4 (&td, 1);
2319                         SIMPLE_OP (td, MINT_LDELEM_U4);
2320                         --td.sp;
2321                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2322                         break;
2323                 case CEE_LDELEM_I8:
2324                         CHECK_STACK (&td, 2);
2325                         ENSURE_I4 (&td, 1);
2326                         SIMPLE_OP (td, MINT_LDELEM_I8);
2327                         --td.sp;
2328                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2329                         break;
2330                 case CEE_LDELEM_I:
2331                         CHECK_STACK (&td, 2);
2332                         ENSURE_I4 (&td, 1);
2333                         SIMPLE_OP (td, MINT_LDELEM_I);
2334                         --td.sp;
2335                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2336                         break;
2337                 case CEE_LDELEM_R4:
2338                         CHECK_STACK (&td, 2);
2339                         ENSURE_I4 (&td, 1);
2340                         SIMPLE_OP (td, MINT_LDELEM_R4);
2341                         --td.sp;
2342                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2343                         break;
2344                 case CEE_LDELEM_R8:
2345                         CHECK_STACK (&td, 2);
2346                         ENSURE_I4 (&td, 1);
2347                         SIMPLE_OP (td, MINT_LDELEM_R8);
2348                         --td.sp;
2349                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2350                         break;
2351                 case CEE_LDELEM_REF:
2352                         CHECK_STACK (&td, 2);
2353                         ENSURE_I4 (&td, 1);
2354                         SIMPLE_OP (td, MINT_LDELEM_REF);
2355                         --td.sp;
2356                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
2357                         break;
2358                 case CEE_LDELEM:
2359                         CHECK_STACK (&td, 2);
2360                         token = read32 (td.ip + 1);
2361                         klass = mono_class_get_full (image, token, generic_context);
2362                         switch (mint_type (&klass->byval_arg)) {
2363                                 case MINT_TYPE_I1:
2364                                         ENSURE_I4 (&td, 1);
2365                                         SIMPLE_OP (td, MINT_LDELEM_I1);
2366                                         --td.sp;
2367                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2368                                         break;
2369                                 case MINT_TYPE_U1:
2370                                         ENSURE_I4 (&td, 1);
2371                                         SIMPLE_OP (td, MINT_LDELEM_U1);
2372                                         --td.sp;
2373                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2374                                         break;
2375                                 case MINT_TYPE_U2:
2376                                         ENSURE_I4 (&td, 1);
2377                                         SIMPLE_OP (td, MINT_LDELEM_U2);
2378                                         --td.sp;
2379                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2380                                         break;
2381                                 case MINT_TYPE_I2:
2382                                         ENSURE_I4 (&td, 1);
2383                                         SIMPLE_OP (td, MINT_LDELEM_I2);
2384                                         --td.sp;
2385                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2386                                         break;
2387                                 case MINT_TYPE_I4:
2388                                         ENSURE_I4 (&td, 1);
2389                                         SIMPLE_OP (td, MINT_LDELEM_I4);
2390                                         --td.sp;
2391                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2392                                         break;
2393                                 case MINT_TYPE_I8:
2394                                         ENSURE_I4 (&td, 1);
2395                                         SIMPLE_OP (td, MINT_LDELEM_I8);
2396                                         --td.sp;
2397                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2398                                         break;
2399                                 case MINT_TYPE_R4:
2400                                         ENSURE_I4 (&td, 1);
2401                                         SIMPLE_OP (td, MINT_LDELEM_R4);
2402                                         --td.sp;
2403                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2404                                         break;
2405                                 case MINT_TYPE_R8:
2406                                         ENSURE_I4 (&td, 1);
2407                                         SIMPLE_OP (td, MINT_LDELEM_R8);
2408                                         --td.sp;
2409                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2410                                         break;
2411                                 case MINT_TYPE_O:
2412                                         ENSURE_I4 (&td, 1);
2413                                         SIMPLE_OP (td, MINT_LDELEM_REF);
2414                                         --td.sp;
2415                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
2416                                         break;
2417                                 case MINT_TYPE_VT: {
2418                                         int size = mono_class_value_size (klass, NULL);
2419                                         ENSURE_I4 (&td, 1);
2420                                         SIMPLE_OP (td, MINT_LDELEM_VT);
2421                                         ADD_CODE (&td, get_data_item_index (&td, klass));
2422                                         WRITE32 (&td, &size);
2423                                         --td.sp;
2424                                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_VT);
2425                                         PUSH_VT (&td, size);
2426                                         break;
2427                                 }
2428                                 default: {
2429                                         GString *res = g_string_new ("");
2430                                         mono_type_get_desc (res, &klass->byval_arg, TRUE);
2431                                         g_print ("LDELEM: %s -> %d (%s)\n", klass->name, mint_type (&klass->byval_arg), res->str);
2432                                         g_string_free (res, TRUE);
2433                                         g_assert (0);
2434                                         break;
2435                                 }
2436                         }
2437                         td.ip += 4;
2438                         break;
2439                 case CEE_STELEM_I:
2440                         CHECK_STACK (&td, 3);
2441                         ENSURE_I4 (&td, 2);
2442                         SIMPLE_OP (td, MINT_STELEM_I);
2443                         td.sp -= 3;
2444                         break;
2445                 case CEE_STELEM_I1:
2446                         CHECK_STACK (&td, 3);
2447                         ENSURE_I4 (&td, 2);
2448                         SIMPLE_OP (td, MINT_STELEM_I1);
2449                         td.sp -= 3;
2450                         break;
2451                 case CEE_STELEM_I2:
2452                         CHECK_STACK (&td, 3);
2453                         ENSURE_I4 (&td, 2);
2454                         SIMPLE_OP (td, MINT_STELEM_I2);
2455                         td.sp -= 3;
2456                         break;
2457                 case CEE_STELEM_I4:
2458                         CHECK_STACK (&td, 3);
2459                         ENSURE_I4 (&td, 2);
2460                         SIMPLE_OP (td, MINT_STELEM_I4);
2461                         td.sp -= 3;
2462                         break;
2463                 case CEE_STELEM_I8:
2464                         CHECK_STACK (&td, 3);
2465                         ENSURE_I4 (&td, 2);
2466                         SIMPLE_OP (td, MINT_STELEM_I8);
2467                         td.sp -= 3;
2468                         break;
2469                 case CEE_STELEM_R4:
2470                         CHECK_STACK (&td, 3);
2471                         ENSURE_I4 (&td, 2);
2472                         SIMPLE_OP (td, MINT_STELEM_R4);
2473                         td.sp -= 3;
2474                         break;
2475                 case CEE_STELEM_R8:
2476                         CHECK_STACK (&td, 3);
2477                         ENSURE_I4 (&td, 2);
2478                         SIMPLE_OP (td, MINT_STELEM_R8);
2479                         td.sp -= 3;
2480                         break;
2481                 case CEE_STELEM_REF:
2482                         CHECK_STACK (&td, 3);
2483                         ENSURE_I4 (&td, 2);
2484                         SIMPLE_OP (td, MINT_STELEM_REF);
2485                         td.sp -= 3;
2486                         break;
2487                 case CEE_STELEM:
2488                         CHECK_STACK (&td, 3);
2489                         ENSURE_I4 (&td, 2);
2490                         token = read32 (td.ip + 1);
2491                         klass = mono_class_get_full (image, token, generic_context);
2492                         switch (mint_type (&klass->byval_arg)) {
2493                                 case MINT_TYPE_U1:
2494                                         SIMPLE_OP (td, MINT_STELEM_U1);
2495                                         break;
2496                                 case MINT_TYPE_I4:
2497                                         SIMPLE_OP (td, MINT_STELEM_I4);
2498                                         break;
2499                                 case MINT_TYPE_I8:
2500                                         SIMPLE_OP (td, MINT_STELEM_I8);
2501                                         break;
2502                                 case MINT_TYPE_O:
2503                                         SIMPLE_OP (td, MINT_STELEM_REF);
2504                                         break;
2505                                 case MINT_TYPE_VT: {
2506                                         int size = mono_class_value_size (klass, NULL);
2507                                         SIMPLE_OP (td, MINT_STELEM_VT);
2508                                         ADD_CODE (&td, get_data_item_index (&td, klass));
2509                                         WRITE32 (&td, &size);
2510                                         POP_VT (&td, size);
2511                                         break;
2512                                 }
2513                                 default: {
2514                                         GString *res = g_string_new ("");
2515                                         mono_type_get_desc (res, &klass->byval_arg, TRUE);
2516                                         g_print ("STELEM: %s -> %d (%s)\n", klass->name, mint_type (&klass->byval_arg), res->str);
2517                                         g_string_free (res, TRUE);
2518                                         g_assert (0);
2519                                         break;
2520                                 }
2521                         }
2522                         td.ip += 4;
2523                         td.sp -= 3;
2524                         break;
2525 #if 0
2526                 case CEE_CONV_OVF_U1:
2527
2528                 case CEE_CONV_OVF_I8:
2529
2530 #if SIZEOF_VOID_P == 8
2531                 case CEE_CONV_OVF_U:
2532 #endif
2533                 case CEE_REFANYVAL: ves_abort(); break;
2534 #endif
2535                 case CEE_CKFINITE:
2536                         CHECK_STACK (&td, 1);
2537                         SIMPLE_OP (td, MINT_CKFINITE);
2538                         break;
2539                 case CEE_CONV_OVF_I1:
2540                 case CEE_CONV_OVF_I1_UN:
2541                         CHECK_STACK (&td, 1);
2542                         switch (td.sp [-1].type) {
2543                         case STACK_TYPE_R8:
2544                                 ADD_CODE(&td, MINT_CONV_OVF_I1_R8);
2545                                 break;
2546                         case STACK_TYPE_I4:
2547                                 ADD_CODE(&td, MINT_CONV_OVF_I1_I4);
2548                                 break;
2549                         case STACK_TYPE_I8:
2550                                 ADD_CODE(&td, MINT_CONV_OVF_I1_I8);
2551                                 break;
2552                         default:
2553                                 g_assert_not_reached ();
2554                         }
2555                         ++td.ip;
2556                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2557                         break;
2558                 case CEE_CONV_OVF_U1:
2559                 case CEE_CONV_OVF_U1_UN:
2560                         CHECK_STACK (&td, 1);
2561                         switch (td.sp [-1].type) {
2562                         case STACK_TYPE_R8:
2563                                 ADD_CODE(&td, MINT_CONV_OVF_U1_R8);
2564                                 break;
2565                         case STACK_TYPE_I4:
2566                                 ADD_CODE(&td, MINT_CONV_OVF_U1_I4);
2567                                 break;
2568                         case STACK_TYPE_I8:
2569                                 ADD_CODE(&td, MINT_CONV_OVF_U1_I8);
2570                                 break;
2571                         default:
2572                                 g_assert_not_reached ();
2573                         }
2574                         ++td.ip;
2575                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2576                         break;
2577                 case CEE_CONV_OVF_I2:
2578                 case CEE_CONV_OVF_I2_UN:
2579                         CHECK_STACK (&td, 1);
2580                         switch (td.sp [-1].type) {
2581                         case STACK_TYPE_R8:
2582                                 ADD_CODE(&td, MINT_CONV_OVF_I2_R8);
2583                                 break;
2584                         case STACK_TYPE_I4:
2585                                 ADD_CODE(&td, MINT_CONV_OVF_I2_I4);
2586                                 break;
2587                         case STACK_TYPE_I8:
2588                                 ADD_CODE(&td, MINT_CONV_OVF_I2_I8);
2589                                 break;
2590                         default:
2591                                 g_assert_not_reached ();
2592                         }
2593                         ++td.ip;
2594                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2595                         break;
2596                 case CEE_CONV_OVF_U2_UN:
2597                 case CEE_CONV_OVF_U2:
2598                         CHECK_STACK (&td, 1);
2599                         switch (td.sp [-1].type) {
2600                         case STACK_TYPE_R8:
2601                                 ADD_CODE(&td, MINT_CONV_OVF_U2_R8);
2602                                 break;
2603                         case STACK_TYPE_I4:
2604                                 ADD_CODE(&td, MINT_CONV_OVF_U2_I4);
2605                                 break;
2606                         case STACK_TYPE_I8:
2607                                 ADD_CODE(&td, MINT_CONV_OVF_U2_I8);
2608                                 break;
2609                         default:
2610                                 g_assert_not_reached ();
2611                         }
2612                         ++td.ip;
2613                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2614                         break;
2615 #if SIZEOF_VOID_P == 4
2616                 case CEE_CONV_OVF_I:
2617 #endif
2618                 case CEE_CONV_OVF_I4:
2619                 case CEE_CONV_OVF_I4_UN:
2620                         CHECK_STACK (&td, 1);
2621                         switch (td.sp [-1].type) {
2622                         case STACK_TYPE_R8:
2623                                 ADD_CODE(&td, MINT_CONV_OVF_I4_R8);
2624                                 break;
2625                         case STACK_TYPE_I4:
2626                                 if (*td.ip == CEE_CONV_OVF_I4_UN)
2627                                         ADD_CODE(&td, MINT_CONV_OVF_I4_U4);
2628                                 break;
2629                         case STACK_TYPE_I8:
2630                                 if (*td.ip == CEE_CONV_OVF_I4_UN)
2631                                         ADD_CODE (&td, MINT_CONV_OVF_I4_U8);
2632                                 else
2633                                         ADD_CODE (&td, MINT_CONV_OVF_I4_I8);
2634                                 break;
2635                         default:
2636                                 g_assert_not_reached ();
2637                         }
2638                         ++td.ip;
2639                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2640                         break;
2641 #if SIZEOF_VOID_P == 4
2642                 case CEE_CONV_OVF_U:
2643 #endif
2644                 case CEE_CONV_OVF_U4:
2645                 case CEE_CONV_OVF_U4_UN:
2646                         CHECK_STACK (&td, 1);
2647                         switch (td.sp [-1].type) {
2648                         case STACK_TYPE_R8:
2649                                 ADD_CODE(&td, MINT_CONV_OVF_U4_R8);
2650                                 break;
2651                         case STACK_TYPE_I4:
2652                                 if (*td.ip != CEE_CONV_OVF_U4_UN)
2653                                         ADD_CODE(&td, MINT_CONV_OVF_U4_I4);
2654                                 break;
2655                         case STACK_TYPE_I8:
2656                                 ADD_CODE(&td, MINT_CONV_OVF_U4_I8);
2657                                 break;
2658                         default:
2659                                 g_assert_not_reached ();
2660                         }
2661                         ++td.ip;
2662                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2663                         break;
2664 #if SIZEOF_VOID_P == 8
2665                 case CEE_CONV_OVF_I:
2666 #endif
2667                 case CEE_CONV_OVF_I8:
2668                         CHECK_STACK (&td, 1);
2669                         switch (td.sp [-1].type) {
2670                         case STACK_TYPE_R8:
2671                                 ADD_CODE(&td, MINT_CONV_OVF_I8_R8);
2672                                 break;
2673                         case STACK_TYPE_I4:
2674                                 ADD_CODE(&td, MINT_CONV_I8_I4);
2675                                 break;
2676                         case STACK_TYPE_I8:
2677                                 break;
2678                         default:
2679                                 g_assert_not_reached ();
2680                         }
2681                         ++td.ip;
2682                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2683                         break;
2684 #if SIZEOF_VOID_P == 8
2685                 case CEE_CONV_OVF_U:
2686 #endif
2687                 case CEE_CONV_OVF_U8:
2688                         CHECK_STACK (&td, 1);
2689                         switch (td.sp [-1].type) {
2690                         case STACK_TYPE_R8:
2691                                 ADD_CODE(&td, MINT_CONV_OVF_U8_R8);
2692                                 break;
2693                         case STACK_TYPE_I4:
2694                                 ADD_CODE(&td, MINT_CONV_OVF_U8_I4);
2695                                 break;
2696                         case STACK_TYPE_I8:
2697                                 ADD_CODE (&td, MINT_CONV_OVF_U8_I8);
2698                                 break;
2699                         default:
2700                                 g_assert_not_reached ();
2701                         }
2702                         ++td.ip;
2703                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2704                         break;
2705                 case CEE_LDTOKEN: {
2706                         int size;
2707                         gpointer handle;
2708                         token = read32 (td.ip + 1);
2709                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
2710                                 handle = mono_method_get_wrapper_data (method, token);
2711                                 klass = (MonoClass *) mono_method_get_wrapper_data (method, token + 1);
2712                                 if (klass == mono_defaults.typehandle_class)
2713                                         handle = &((MonoClass *) handle)->byval_arg;
2714
2715                                 if (generic_context) {
2716                                         handle = mono_class_inflate_generic_type_checked (handle, generic_context, &error);
2717                                         mono_error_cleanup (&error); /* FIXME: don't swallow the error */
2718                                 }
2719                         } else {
2720                                 handle = mono_ldtoken (image, token, &klass, generic_context);
2721                         }
2722                         mono_class_init (klass);
2723                         mt = mint_type (&klass->byval_arg);
2724                         g_assert (mt == MINT_TYPE_VT);
2725                         size = mono_class_value_size (klass, NULL);
2726                         g_assert (size == sizeof(gpointer));
2727                         PUSH_VT (&td, sizeof(gpointer));
2728                         ADD_CODE (&td, MINT_LDTOKEN);
2729                         ADD_CODE (&td, get_data_item_index (&td, handle));
2730
2731                         SET_TYPE (td.sp, stack_type [mt], klass);
2732                         td.sp++;
2733                         td.ip += 5;
2734                         break;
2735                 }
2736                 case CEE_ADD_OVF:
2737                         binary_arith_op(&td, MINT_ADD_OVF_I4);
2738                         ++td.ip;
2739                         break;
2740                 case CEE_ADD_OVF_UN:
2741                         binary_arith_op(&td, MINT_ADD_OVF_UN_I4);
2742                         ++td.ip;
2743                         break;
2744                 case CEE_MUL_OVF:
2745                         binary_arith_op(&td, MINT_MUL_OVF_I4);
2746                         ++td.ip;
2747                         break;
2748                 case CEE_MUL_OVF_UN:
2749                         binary_arith_op(&td, MINT_MUL_OVF_UN_I4);
2750                         ++td.ip;
2751                         break;
2752                 case CEE_SUB_OVF:
2753                         binary_arith_op(&td, MINT_SUB_OVF_I4);
2754                         ++td.ip;
2755                         break;
2756                 case CEE_SUB_OVF_UN:
2757                         binary_arith_op(&td, MINT_SUB_OVF_UN_I4);
2758                         ++td.ip;
2759                         break;
2760                 case CEE_ENDFINALLY:
2761                         SIMPLE_OP (td, MINT_ENDFINALLY);
2762                         generating_code = 0;
2763                         break;
2764                 case CEE_LEAVE:
2765                         td.sp = td.stack;
2766                         handle_branch (&td, MINT_LEAVE_S, MINT_LEAVE, 5 + read32 (td.ip + 1));
2767                         td.ip += 5;
2768                         generating_code = 0;
2769                         break;
2770                 case CEE_LEAVE_S:
2771                         td.sp = td.stack;
2772                         handle_branch (&td, MINT_LEAVE_S, MINT_LEAVE, 2 + (gint8)td.ip [1]);
2773                         td.ip += 2;
2774                         generating_code = 0;
2775                         break;
2776                 case CEE_UNUSED41:
2777                         ++td.ip;
2778                         switch (*td.ip) {
2779                                 case CEE_MONO_CALLI_EXTRA_ARG:
2780                                         /* Same as CEE_CALLI, except that we drop the extra arg required for llvm specific behaviour */
2781                                         ADD_CODE (&td, MINT_POP);
2782                                         ADD_CODE (&td, 1);
2783                                         --td.sp;
2784                                         interp_transform_call (&td, method, NULL, domain, generic_context, is_bb_start, body_start_offset, NULL, FALSE);
2785                                         break;
2786                                 case CEE_MONO_JIT_ICALL_ADDR: {
2787                                         guint32 token;
2788                                         gpointer func;
2789                                         MonoJitICallInfo *info;
2790
2791                                         token = read32 (td.ip + 1);
2792                                         td.ip += 5;
2793                                         func = mono_method_get_wrapper_data (method, token);
2794                                         info = mono_find_jit_icall_by_addr (func);
2795
2796                                         ADD_CODE (&td, MINT_LDFTN);
2797                                         ADD_CODE (&td, get_data_item_index (&td, func));
2798                                         PUSH_SIMPLE_TYPE (&td, STACK_TYPE_I);
2799                                         break;
2800                                 }
2801                                 case CEE_MONO_ICALL: {
2802                                         guint32 token;
2803                                         gpointer func;
2804                                         MonoJitICallInfo *info;
2805
2806                                         token = read32 (td.ip + 1);
2807                                         td.ip += 5;
2808                                         func = mono_method_get_wrapper_data (method, token);
2809                                         info = mono_find_jit_icall_by_addr (func);
2810                                         g_assert (info);
2811
2812                                         CHECK_STACK (&td, info->sig->param_count);
2813                                         switch (info->sig->param_count) {
2814                                         case 0:
2815                                                 if (MONO_TYPE_IS_VOID (info->sig->ret))
2816                                                         ADD_CODE (&td,MINT_ICALL_V_V);
2817                                                 else
2818                                                         ADD_CODE (&td, MINT_ICALL_V_P);
2819                                                 break;
2820                                         case 1:
2821                                                 if (MONO_TYPE_IS_VOID (info->sig->ret))
2822                                                         ADD_CODE (&td,MINT_ICALL_P_V);
2823                                                 else
2824                                                         ADD_CODE (&td,MINT_ICALL_P_P);
2825                                                 break;
2826                                         case 2:
2827                                                 if (MONO_TYPE_IS_VOID (info->sig->ret)) {
2828                                                         if (info->sig->params [1]->type == MONO_TYPE_I4)
2829                                                                 ADD_CODE (&td,MINT_ICALL_PI_V);
2830                                                         else
2831                                                                 ADD_CODE (&td,MINT_ICALL_PP_V);
2832                                                 } else {
2833                                                         if (info->sig->params [1]->type == MONO_TYPE_I4)
2834                                                                 ADD_CODE (&td,MINT_ICALL_PI_P);
2835                                                         else
2836                                                                 ADD_CODE (&td,MINT_ICALL_PP_P);
2837                                                 }
2838                                                 break;
2839                                         case 3:
2840                                                 g_assert (MONO_TYPE_IS_VOID (info->sig->ret));
2841                                                 if (info->sig->params [2]->type == MONO_TYPE_I4)
2842                                                         ADD_CODE (&td,MINT_ICALL_PPI_V);
2843                                                 else
2844                                                         ADD_CODE (&td,MINT_ICALL_PPP_V);
2845                                                 break;
2846                                         default:
2847                                                 g_assert_not_reached ();
2848                                         }
2849
2850                                         if (func == mono_ftnptr_to_delegate) {
2851                                                 g_error ("TODO: ?");
2852                                         }
2853                                         ADD_CODE(&td, get_data_item_index (&td, func));
2854                                         td.sp -= info->sig->param_count;
2855
2856                                         if (!MONO_TYPE_IS_VOID (info->sig->ret)) {
2857                                                 td.sp ++;
2858                                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2859                                         }
2860                                         break;
2861                                 }
2862                         case CEE_MONO_VTADDR: {
2863                                 int size;
2864                                 CHECK_STACK (&td, 1);
2865                                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE)
2866                                         size = mono_class_native_size(td.sp [-1].klass, NULL);
2867                                 else
2868                                         size = mono_class_value_size(td.sp [-1].klass, NULL);
2869                                 size = (size + 7) & ~7;
2870                                 ADD_CODE(&td, MINT_VTRESULT);
2871                                 ADD_CODE(&td, 0);
2872                                 WRITE32(&td, &size);
2873                                 td.vt_sp -= size;
2874                                 ++td.ip;
2875                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2876                                 break;
2877                         }
2878                         case CEE_MONO_LDPTR:
2879                         case CEE_MONO_CLASSCONST:
2880                                 token = read32 (td.ip + 1);
2881                                 td.ip += 5;
2882                                 ADD_CODE(&td, MINT_MONO_LDPTR);
2883                                 ADD_CODE(&td, get_data_item_index (&td, mono_method_get_wrapper_data (method, token)));
2884                                 td.sp [0].type = STACK_TYPE_I;
2885                                 ++td.sp;
2886                                 break;
2887                         case CEE_MONO_OBJADDR:
2888                                 CHECK_STACK (&td, 1);
2889                                 ++td.ip;
2890                                 td.sp[-1].type = STACK_TYPE_MP;
2891                                 /* do nothing? */
2892                                 break;
2893                         case CEE_MONO_NEWOBJ:
2894                                 token = read32 (td.ip + 1);
2895                                 td.ip += 5;
2896                                 ADD_CODE(&td, MINT_MONO_NEWOBJ);
2897                                 ADD_CODE(&td, get_data_item_index (&td, mono_method_get_wrapper_data (method, token)));
2898                                 td.sp [0].type = STACK_TYPE_O;
2899                                 ++td.sp;
2900                                 break;
2901                         case CEE_MONO_RETOBJ:
2902                                 CHECK_STACK (&td, 1);
2903                                 token = read32 (td.ip + 1);
2904                                 td.ip += 5;
2905                                 ADD_CODE(&td, MINT_MONO_RETOBJ);
2906                                 td.sp--;
2907
2908                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2909
2910                                 /*stackval_from_data (signature->ret, frame->retval, sp->data.vt, signature->pinvoke);*/
2911
2912                                 if (td.sp > td.stack)
2913                                         g_warning ("CEE_MONO_RETOBJ: more values on stack: %d", td.sp-td.stack);
2914                                 break;
2915                         case CEE_MONO_LDNATIVEOBJ:
2916                                 token = read32 (td.ip + 1);
2917                                 td.ip += 5;
2918                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2919                                 g_assert(klass->valuetype);
2920                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2921                                 break;
2922                         case CEE_MONO_SAVE_LMF:
2923                         case CEE_MONO_RESTORE_LMF:
2924                         case CEE_MONO_NOT_TAKEN:
2925                                 ++td.ip;
2926                                 break;
2927                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
2928                                 ADD_CODE (&td, MINT_MONO_LDPTR);
2929                                 ADD_CODE (&td, get_data_item_index (&td, mono_thread_interruption_request_flag ()));
2930                                 PUSH_TYPE (&td, STACK_TYPE_MP, NULL);
2931                                 ++td.ip;
2932                                 break;
2933                         default:
2934                                 g_error ("transform.c: Unimplemented opcode: 0xF0 %02x at 0x%x\n", *td.ip, td.ip-header->code);
2935                         }
2936                         break;
2937 #if 0
2938                 case CEE_PREFIX7:
2939                 case CEE_PREFIX6:
2940                 case CEE_PREFIX5:
2941                 case CEE_PREFIX4:
2942                 case CEE_PREFIX3:
2943                 case CEE_PREFIX2:
2944                 case CEE_PREFIXREF: ves_abort(); break;
2945 #endif
2946                 /*
2947                  * Note: Exceptions thrown when executing a prefixed opcode need
2948                  * to take into account the number of prefix bytes (usually the
2949                  * throw point is just (ip - n_prefix_bytes).
2950                  */
2951                 case CEE_PREFIX1:
2952                         ++td.ip;
2953                         switch (*td.ip) {
2954 #if 0
2955                         case CEE_ARGLIST: ves_abort(); break;
2956 #endif
2957                         case CEE_CEQ:
2958                                 CHECK_STACK(&td, 2);
2959                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2960                                         ADD_CODE(&td, MINT_CEQ_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2961                                 else
2962                                         ADD_CODE(&td, MINT_CEQ_I4 + td.sp [-1].type - STACK_TYPE_I4);
2963                                 --td.sp;
2964                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2965                                 ++td.ip;
2966                                 break;
2967                         case CEE_CGT:
2968                                 CHECK_STACK(&td, 2);
2969                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2970                                         ADD_CODE(&td, MINT_CGT_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2971                                 else
2972                                         ADD_CODE(&td, MINT_CGT_I4 + td.sp [-1].type - STACK_TYPE_I4);
2973                                 --td.sp;
2974                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2975                                 ++td.ip;
2976                                 break;
2977                         case CEE_CGT_UN:
2978                                 CHECK_STACK(&td, 2);
2979                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2980                                         ADD_CODE(&td, MINT_CGT_UN_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2981                                 else
2982                                         ADD_CODE(&td, MINT_CGT_UN_I4 + td.sp [-1].type - STACK_TYPE_I4);
2983                                 --td.sp;
2984                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2985                                 ++td.ip;
2986                                 break;
2987                         case CEE_CLT:
2988                                 CHECK_STACK(&td, 2);
2989                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2990                                         ADD_CODE(&td, MINT_CLT_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2991                                 else
2992                                         ADD_CODE(&td, MINT_CLT_I4 + td.sp [-1].type - STACK_TYPE_I4);
2993                                 --td.sp;
2994                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2995                                 ++td.ip;
2996                                 break;
2997                         case CEE_CLT_UN:
2998                                 CHECK_STACK(&td, 2);
2999                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
3000                                         ADD_CODE(&td, MINT_CLT_UN_I4 + STACK_TYPE_I - STACK_TYPE_I4);
3001                                 else
3002                                         ADD_CODE(&td, MINT_CLT_UN_I4 + td.sp [-1].type - STACK_TYPE_I4);
3003                                 --td.sp;
3004                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
3005                                 ++td.ip;
3006                                 break;
3007                         case CEE_LDVIRTFTN: /* fallthrough */
3008                         case CEE_LDFTN: {
3009                                 MonoMethod *m;
3010                                 if (*td.ip == CEE_LDVIRTFTN) {
3011                                         CHECK_STACK (&td, 1);
3012                                         --td.sp;
3013                                 }
3014                                 token = read32 (td.ip + 1);
3015                                 if (method->wrapper_type != MONO_WRAPPER_NONE)
3016                                         m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
3017                                 else
3018                                         m = mono_get_method_full (image, token, NULL, generic_context);
3019
3020                                 if (method->wrapper_type == MONO_WRAPPER_NONE && m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
3021                                         m = mono_marshal_get_synchronized_wrapper (m);
3022
3023                                 ADD_CODE(&td, *td.ip == CEE_LDFTN ? MINT_LDFTN : MINT_LDVIRTFTN);
3024                                 ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (domain, m, &error)));
3025                                 mono_error_cleanup (&error); /* FIXME: don't swallow the error */
3026                                 td.ip += 5;
3027                                 PUSH_SIMPLE_TYPE (&td, STACK_TYPE_F);
3028                                 break;
3029                         }
3030                         case CEE_LDARG:
3031                                 load_arg (&td, read16 (td.ip + 1));
3032                                 td.ip += 3;
3033                                 break;
3034                         case CEE_LDARGA: {
3035                                 int n = read16 (td.ip + 1);
3036                                 ADD_CODE (&td, MINT_LDARGA);
3037                                 ADD_CODE (&td, td.rtm->arg_offsets [n]); /* FIX for large offsets */
3038                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
3039                                 td.ip += 3;
3040                                 break;
3041                         }
3042                         case CEE_STARG:
3043                                 store_arg (&td, read16 (td.ip + 1));
3044                                 td.ip += 3;
3045                                 break;
3046                         case CEE_LDLOC:
3047                                 load_local (&td, read16 (td.ip + 1));
3048                                 td.ip += 3;
3049                                 break;
3050                         case CEE_LDLOCA:
3051                                 ADD_CODE(&td, MINT_LDLOCA_S);
3052                                 ADD_CODE(&td, td.rtm->local_offsets [read16 (td.ip + 1)]);
3053                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
3054                                 td.ip += 3;
3055                                 break;
3056                         case CEE_STLOC:
3057                                 store_local (&td, read16 (td.ip + 1));
3058                                 td.ip += 3;
3059                                 break;
3060                         case CEE_LOCALLOC:
3061                                 CHECK_STACK (&td, 1);
3062 #if SIZEOF_VOID_P == 8
3063                                 if (td.sp [-1].type == STACK_TYPE_I8)
3064                                         ADD_CODE(&td, MINT_CONV_I4_I8);
3065 #endif
3066                                 ADD_CODE(&td, MINT_LOCALLOC);
3067                                 if (td.sp != td.stack + 1)
3068                                         g_warning("CEE_LOCALLOC: stack not empty");
3069                                 ++td.ip;
3070                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
3071                                 break;
3072 #if 0
3073                         case CEE_UNUSED57: ves_abort(); break;
3074                         case CEE_ENDFILTER: ves_abort(); break;
3075 #endif
3076                         case CEE_UNALIGNED_:
3077                                 ++td.ip;
3078                                 /* FIX: should do something? */;
3079                                 break;
3080                         case CEE_VOLATILE_:
3081                                 ++td.ip;
3082                                 /* FIX: should do something? */;
3083                                 break;
3084                         case CEE_TAIL_:
3085                                 ++td.ip;
3086                                 /* FIX: should do something? */;
3087                                 break;
3088                         case CEE_INITOBJ:
3089                                 CHECK_STACK(&td, 1);
3090                                 token = read32 (td.ip + 1);
3091                                 klass = mono_class_get_full (image, token, generic_context);
3092                                 if (klass->valuetype) {
3093                                         ADD_CODE (&td, MINT_INITOBJ);
3094                                         i32 = mono_class_value_size (klass, NULL);
3095                                         WRITE32 (&td, &i32);
3096                                 } else {
3097                                         ADD_CODE (&td, MINT_LDNULL);
3098                                         ADD_CODE (&td, MINT_STIND_REF);
3099                                 }
3100                                 td.ip += 5;
3101                                 --td.sp;
3102                                 break;
3103                         case CEE_CPBLK:
3104                                 CHECK_STACK(&td, 3);
3105                                 /* FIX? convert length to I8? */
3106                                 ADD_CODE(&td, MINT_CPBLK);
3107                                 td.sp -= 3;
3108                                 ++td.ip;
3109                                 break;
3110                         case CEE_READONLY_:
3111                                 readonly = TRUE;
3112                                 td.ip += 1;
3113                                 break;
3114                         case CEE_CONSTRAINED_:
3115                                 token = read32 (td.ip + 1);
3116                                 constrained_class = mono_class_get_full (image, token, generic_context);
3117                                 mono_class_init (constrained_class);
3118                                 td.ip += 5;
3119                                 break;
3120                         case CEE_INITBLK:
3121                                 CHECK_STACK(&td, 3);
3122                                 ADD_CODE(&td, MINT_INITBLK);
3123                                 td.sp -= 3;
3124                                 break;
3125 #if 0
3126                         case CEE_NO_:
3127                                 /* FIXME: implement */
3128                                 ip += 2;
3129                                 break;
3130 #endif
3131                         case CEE_RETHROW:
3132                                 SIMPLE_OP (td, MINT_RETHROW);
3133                                 generating_code = 0;
3134                                 break;
3135                         case CEE_SIZEOF: {
3136                                 gint32 size;
3137                                 token = read32 (td.ip + 1);
3138                                 td.ip += 5;
3139                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
3140                                         int align;
3141                                         MonoType *type = mono_type_create_from_typespec (image, token);
3142                                         size = mono_type_size (type, &align);
3143                                 } else {
3144                                         int align;
3145                                         MonoClass *szclass = mono_class_get_full (image, token, generic_context);
3146                                         mono_class_init (szclass);
3147 #if 0
3148                                         if (!szclass->valuetype)
3149                                                 THROW_EX (mono_exception_from_name (mono_defaults.corlib, "System", "InvalidProgramException"), ip - 5);
3150 #endif
3151                                         size = mono_type_size (&szclass->byval_arg, &align);
3152                                 }
3153                                 ADD_CODE(&td, MINT_LDC_I4);
3154                                 WRITE32(&td, &size);
3155                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
3156                                 break;
3157                         }
3158 #if 0
3159                         case CEE_REFANYTYPE: ves_abort(); break;
3160 #endif
3161                         default:
3162                                 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);
3163                         }
3164                         break;
3165                 default:
3166                         g_error ("transform.c: Unimplemented opcode: %02x at 0x%x\n", *td.ip, td.ip-header->code);
3167                 }
3168
3169                 if (td.new_ip - td.new_code != new_in_start_offset)
3170                         td.last_new_ip = td.new_code + new_in_start_offset;
3171                 else if (td.is_bb_start [td.in_start - td.il_code])
3172                         td.is_bb_start [td.ip - td.il_code] = 1;
3173
3174                 td.last_ip = td.in_start;
3175         }
3176
3177         if (mono_interp_traceopt) {
3178                 const guint16 *p = td.new_code;
3179                 printf("Runtime method: %p, VT stack size: %d\n", rtm, td.max_vt_sp);
3180                 printf("Calculated stack size: %d, stated size: %d\n", td.max_stack_height, header->max_stack);
3181                 while (p < td.new_ip) {
3182                         p = mono_interp_dis_mintop(td.new_code, p);
3183                         printf("\n");
3184                 }
3185         }
3186         g_assert (td.max_stack_height <= (header->max_stack + 1));
3187
3188         rtm->clauses = mono_domain_alloc0 (domain, header->num_clauses * sizeof (MonoExceptionClause));
3189         memcpy (rtm->clauses, header->clauses, header->num_clauses * sizeof(MonoExceptionClause));
3190         rtm->code = mono_domain_alloc0 (domain, (td.new_ip - td.new_code) * sizeof (gushort));
3191         memcpy (rtm->code, td.new_code, (td.new_ip - td.new_code) * sizeof(gushort));
3192         g_free (td.new_code);
3193         rtm->new_body_start = rtm->code + body_start_offset;
3194         rtm->num_clauses = header->num_clauses;
3195         for (i = 0; i < header->num_clauses; i++) {
3196                 MonoExceptionClause *c = rtm->clauses + i;
3197                 int end_off = c->try_offset + c->try_len;
3198                 c->try_offset = td.in_offsets [c->try_offset];
3199                 c->try_len = td.in_offsets [end_off] - c->try_offset;
3200                 end_off = c->handler_offset + c->handler_len;
3201                 c->handler_offset = td.in_offsets [c->handler_offset];
3202                 c->handler_len = td.in_offsets [end_off] - c->handler_offset;
3203         }
3204         rtm->vt_stack_size = td.max_vt_sp;
3205         rtm->alloca_size = rtm->locals_size + rtm->args_size + rtm->vt_stack_size + rtm->stack_size;
3206         rtm->data_items = mono_domain_alloc0 (domain, td.n_data_items * sizeof (td.data_items [0]));
3207         memcpy (rtm->data_items, td.data_items, td.n_data_items * sizeof (td.data_items [0]));
3208         g_free (td.in_offsets);
3209         g_free (td.forward_refs);
3210         for (i = 0; i < header->code_size; ++i)
3211                 g_free (td.stack_state [i]);
3212         g_free (td.stack_state);
3213         g_free (td.stack_height);
3214         g_free (td.vt_stack_size);
3215         g_free (td.data_items);
3216         g_free (td.stack);
3217         g_hash_table_destroy (td.data_hash);
3218 }
3219
3220 static mono_mutex_t calc_section;
3221
3222 void
3223 mono_interp_transform_init (void)
3224 {
3225         mono_os_mutex_init_recursive(&calc_section);
3226 }
3227
3228 MonoException *
3229 mono_interp_transform_method (RuntimeMethod *runtime_method, ThreadContext *context)
3230 {
3231         int i, align, size, offset;
3232         MonoMethod *method = runtime_method->method;
3233         MonoImage *image = method->klass->image;
3234         MonoMethodHeader *header = mono_method_get_header (method);
3235         MonoMethodSignature *signature = mono_method_signature (method);
3236         register const unsigned char *ip, *end;
3237         const MonoOpcode *opcode;
3238         MonoMethod *m;
3239         MonoClass *class;
3240         MonoDomain *domain = mono_domain_get ();
3241         unsigned char *is_bb_start;
3242         int in;
3243         MonoVTable *method_class_vt;
3244         int backwards;
3245         MonoGenericContext *generic_context = NULL;
3246
3247         // g_printerr ("TRANSFORM(0x%016lx): begin %s::%s\n", mono_thread_current (), method->klass->name, method->name);
3248         method_class_vt = mono_class_vtable (domain, runtime_method->method->klass);
3249         if (!method_class_vt->initialized) {
3250                 MonoError error;
3251                 jmp_buf env;
3252                 MonoInvocation *last_env_frame = context->env_frame;
3253                 jmp_buf *old_env = context->current_env;
3254                 error_init (&error);
3255
3256                 if (setjmp(env)) {
3257                         MonoException *failed = context->env_frame->ex;
3258                         context->env_frame->ex = NULL;
3259                         context->env_frame = last_env_frame;
3260                         context->current_env = old_env;
3261                         return failed;
3262                 }
3263                 context->env_frame = context->current_frame;
3264                 context->current_env = &env;
3265                 mono_runtime_class_init_full (method_class_vt, &error);
3266                 if (!mono_error_ok (&error)) {
3267                         return mono_error_convert_to_exception (&error);
3268                 }
3269                 context->env_frame = last_env_frame;
3270                 context->current_env = old_env;
3271         }
3272
3273         mono_profiler_method_jit (method); /* sort of... */
3274
3275         if (mono_method_signature (method)->is_inflated)
3276                 generic_context = mono_method_get_context (method);
3277         else {
3278                 MonoGenericContainer *generic_container = mono_method_get_generic_container (method);
3279                 if (generic_container)
3280                         generic_context = &generic_container->context;
3281         }
3282
3283         if (method->iflags & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
3284                 MonoMethod *nm = NULL;
3285                 mono_os_mutex_lock(&calc_section);
3286                 if (runtime_method->transformed) {
3287                         mono_os_mutex_unlock(&calc_section);
3288                         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3289                         return NULL;
3290                 }
3291
3292                 /* assumes all internal calls with an array this are built in... */
3293                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL && (! mono_method_signature (method)->hasthis || method->klass->rank == 0)) {
3294                         nm = mono_marshal_get_native_wrapper (method, TRUE, FALSE);
3295                         signature = mono_method_signature (nm);
3296                 } else {
3297                         const char *name = method->name;
3298                         if (method->klass->parent == mono_defaults.multicastdelegate_class) {
3299                                 if (*name == '.' && (strcmp (name, ".ctor") == 0)) {
3300                                         MonoJitICallInfo *mi = mono_find_jit_icall_by_name ("ves_icall_mono_delegate_ctor");
3301                                         g_assert (mi);
3302                                         char *wrapper_name = g_strdup_printf ("__icall_wrapper_%s", mi->name);
3303                                         nm = mono_marshal_get_icall_wrapper (mi->sig, wrapper_name, mi->func, TRUE);
3304                                 } else if (*name == 'I' && (strcmp (name, "Invoke") == 0)) {
3305                                         nm = mono_marshal_get_delegate_invoke (method, NULL);
3306                                 } else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
3307                                         nm = mono_marshal_get_delegate_begin_invoke (method);
3308                                 } else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
3309                                         nm = mono_marshal_get_delegate_end_invoke (method);
3310                                 }
3311                         }
3312                         if (nm == NULL) {
3313                                 runtime_method->code = g_malloc(sizeof(short));
3314                                 runtime_method->code[0] = MINT_CALLRUN;
3315                         }
3316                 }
3317                 if (nm == NULL) {
3318                         runtime_method->stack_size = sizeof (stackval); /* for tracing */
3319                         runtime_method->alloca_size = runtime_method->stack_size;
3320                         runtime_method->transformed = TRUE;
3321                         mono_os_mutex_unlock(&calc_section);
3322                         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3323                         return NULL;
3324                 }
3325                 method = nm;
3326                 header = mono_method_get_header (nm);
3327                 mono_os_mutex_unlock(&calc_section);
3328         } else if (method->klass == mono_defaults.array_class) {
3329                 if (!strcmp (method->name, "UnsafeMov")) {
3330                         mono_os_mutex_lock (&calc_section);
3331                         if (!runtime_method->transformed) {
3332                                 runtime_method->code = g_malloc (sizeof (short));
3333                                 runtime_method->code[0] = MINT_CALLRUN;
3334                                 runtime_method->stack_size = sizeof (stackval); /* for tracing */
3335                                 runtime_method->alloca_size = runtime_method->stack_size;
3336                                 runtime_method->transformed = TRUE;
3337                         }
3338                         mono_os_mutex_unlock(&calc_section);
3339                         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3340                         return NULL;
3341                 } else if (!strcmp (method->name, "UnsafeStore)")) {
3342                         g_error ("TODO");
3343                 } else if (!strcmp (method->name, "UnsafeLoad)")) {
3344                         g_error ("TODO");
3345                 }
3346         }
3347         g_assert ((signature->param_count + signature->hasthis) < 1000);
3348         g_assert (header->max_stack < 10000);
3349         /* intern the strings in the method. */
3350         ip = header->code;
3351         end = ip + header->code_size;
3352
3353         is_bb_start = g_malloc0(header->code_size);
3354         is_bb_start [0] = 1;
3355         while (ip < end) {
3356                 in = *ip;
3357                 if (in == 0xfe) {
3358                         ip++;
3359                         in = *ip + 256;
3360                 }
3361                 else if (in == 0xf0) {
3362                         ip++;
3363                         in = *ip + MONO_CEE_MONO_ICALL;
3364                 }
3365                 opcode = &mono_opcodes [in];
3366                 switch (opcode->argument) {
3367                 case MonoInlineNone:
3368                         ++ip;
3369                         break;
3370                 case MonoInlineString:
3371                         if (method->wrapper_type == MONO_WRAPPER_NONE)
3372                                 mono_ldstr (domain, image, mono_metadata_token_index (read32 (ip + 1)));
3373                         ip += 5;
3374                         break;
3375                 case MonoInlineType:
3376                         if (method->wrapper_type == MONO_WRAPPER_NONE) {
3377                                 class = mono_class_get_full (image, read32 (ip + 1), generic_context);
3378                                 mono_class_init (class);
3379                                 /* quick fix to not do this for the fake ptr classes - probably should not be getting the vtable at all here */
3380 #if 0
3381                                 g_error ("FIXME: interface method lookup: %s (in method %s)", class->name, method->name);
3382                                 if (!(class->flags & TYPE_ATTRIBUTE_INTERFACE) && class->interface_offsets != NULL)
3383                                         mono_class_vtable (domain, class);
3384 #endif
3385                         }
3386                         ip += 5;
3387                         break;
3388                 case MonoInlineMethod:
3389                         if (method->wrapper_type == MONO_WRAPPER_NONE && *ip != CEE_CALLI) {
3390                                 m = mono_get_method_full (image, read32 (ip + 1), NULL, generic_context);
3391                                 if (m == NULL) {
3392                                         g_free (is_bb_start);
3393                                         g_error ("FIXME: where to get method and class string?");
3394                                         return NULL;
3395                                         // return mono_get_exception_missing_method ();
3396                                 }
3397                                 mono_class_init (m->klass);
3398                                 if (!mono_class_is_interface (m->klass))
3399                                         mono_class_vtable (domain, m->klass);
3400                         }
3401                         ip += 5;
3402                         break;
3403                 case MonoInlineField:
3404                 case MonoInlineSig:
3405                 case MonoInlineI:
3406                 case MonoInlineTok:
3407                 case MonoShortInlineR:
3408                         ip += 5;
3409                         break;
3410                 case MonoInlineBrTarget:
3411                         offset = read32 (ip + 1);
3412                         ip += 5;
3413                         backwards = offset < 0;
3414                         offset += ip - header->code;
3415                         g_assert (offset >= 0 && offset < header->code_size);
3416                         is_bb_start [offset] |= backwards ? 2 : 1;
3417                         break;
3418                 case MonoShortInlineBrTarget:
3419                         offset = ((gint8 *)ip) [1];
3420                         ip += 2;
3421                         backwards = offset < 0;
3422                         offset += ip - header->code;
3423                         g_assert (offset >= 0 && offset < header->code_size);
3424                         is_bb_start [offset] |= backwards ? 2 : 1;
3425                         break;
3426                 case MonoInlineVar:
3427                         ip += 3;
3428                         break;
3429                 case MonoShortInlineVar:
3430                 case MonoShortInlineI:
3431                         ip += 2;
3432                         break;
3433                 case MonoInlineSwitch: {
3434                         guint32 n;
3435                         const unsigned char *next_ip;
3436                         ++ip;
3437                         n = read32 (ip);
3438                         ip += 4;
3439                         next_ip = ip + 4 * n;
3440                         for (i = 0; i < n; i++) {
3441                                 offset = read32 (ip);
3442                                 backwards = offset < 0;
3443                                 offset += next_ip - header->code;
3444                                 g_assert (offset >= 0 && offset < header->code_size);
3445                                 is_bb_start [offset] |= backwards ? 2 : 1;
3446                                 ip += 4;
3447                         }
3448                         break;
3449                 }
3450                 case MonoInlineR:
3451                 case MonoInlineI8:
3452                         ip += 9;
3453                         break;
3454                 default:
3455                         g_assert_not_reached ();
3456                 }
3457         }
3458         // g_printerr ("TRANSFORM(0x%016lx): end %s::%s\n", mono_thread_current (), method->klass->name, method->name);
3459
3460         /* the rest needs to be locked so it is only done once */
3461         mono_os_mutex_lock(&calc_section);
3462         if (runtime_method->transformed) {
3463                 mono_os_mutex_unlock(&calc_section);
3464                 g_free (is_bb_start);
3465                 mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3466                 return NULL;
3467         }
3468
3469         runtime_method->local_offsets = g_malloc (header->num_locals * sizeof(guint32));
3470         runtime_method->stack_size = (sizeof (stackval) + 2) * header->max_stack; /* + 1 for returns of called functions  + 1 for 0-ing in trace*/
3471         runtime_method->stack_size = (runtime_method->stack_size + 7) & ~7;
3472         offset = 0;
3473         for (i = 0; i < header->num_locals; ++i) {
3474                 size = mono_type_size (header->locals [i], &align);
3475                 offset += align - 1;
3476                 offset &= ~(align - 1);
3477                 runtime_method->local_offsets [i] = offset;
3478                 offset += size;
3479         }
3480         offset = (offset + 7) & ~7;
3481         runtime_method->locals_size = offset;
3482         g_assert (runtime_method->locals_size < 65536);
3483         offset = 0;
3484         runtime_method->arg_offsets = g_malloc ((!!signature->hasthis + signature->param_count) * sizeof(guint32));
3485
3486         if (signature->hasthis) {
3487                 g_assert (!signature->pinvoke);
3488                 size = mono_type_stack_size (&method->klass->byval_arg, &align);
3489                 offset += align - 1;
3490                 offset &= ~(align - 1);
3491                 runtime_method->arg_offsets [0] = offset;
3492                 offset += size;
3493         }
3494
3495         for (i = 0; i < signature->param_count; ++i) {
3496                 if (signature->pinvoke) {
3497                         guint32 dummy;
3498                         size = mono_type_native_stack_size (signature->params [i], &dummy);
3499                         align = 8;
3500                 }
3501                 else
3502                         size = mono_type_stack_size (signature->params [i], &align);
3503                 offset += align - 1;
3504                 offset &= ~(align - 1);
3505                 runtime_method->arg_offsets [i + !!signature->hasthis] = offset;
3506                 offset += size;
3507         }
3508         offset = (offset + 7) & ~7;
3509         runtime_method->args_size = offset;
3510         g_assert (runtime_method->args_size < 10000);
3511
3512         generate (method, runtime_method, is_bb_start, generic_context);
3513
3514         g_free (is_bb_start);
3515
3516         mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_OK);
3517         runtime_method->transformed = TRUE;
3518         mono_os_mutex_unlock(&calc_section);
3519
3520         return NULL;
3521 }
3522