mono/interpreter/transform.c

   1 /*
   2  * transform CIL into different opcodes for more
   3  * efficient interpretation
   4  *
   5  * Written by Bernie Solomon (bernard@ugsolutions.com)
   6  * Copyright (c) 2004.
   7  */
   8
   9 #include <string.h>
  10 #include <mono/metadata/appdomain.h>
  11 #include <mono/metadata/debug-helpers.h>
  12 #include <mono/metadata/exception.h>
  13 #include <mono/metadata/mono-endian.h>
  14 #include <mono/metadata/marshal.h>
  15 #include <mono/metadata/profiler-private.h>
  16 #include <mono/metadata/tabledefs.h>
  17
  18 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
  19         a = i,
  20
  21 enum {
  22 #include "mono/cil/opcode.def"
  23         CEE_LASTOP
  24 };
  25 #undef OPDEF
  26
  27 #include "mintops.h"
  28 #include "interp.h"
  29
  30 #define DEBUG 0
  31
  32 typedef struct
  33 {
  34         MonoClass *klass;
  35         unsigned char type;
  36         unsigned char flags;
  37 } StackInfo;
  38
  39 typedef struct
  40 {
  41         MonoMethod *method;
  42         MonoMethodHeader *header;
  43         RuntimeMethod *rtm;
  44         const unsigned char *il_code;
  45         const unsigned char *ip;
  46         const unsigned char *last_ip;
  47         const unsigned char *in_start;
  48         int code_size;
  49         int *in_offsets;
  50         int *forward_refs;
  51         StackInfo **stack_state;
  52         int *stack_height;
  53         int *vt_stack_size;
  54         unsigned char *is_bb_start;
  55         unsigned short *new_code;
  56         unsigned short *new_code_end;
  57         unsigned short *new_ip;
  58         unsigned short *last_new_ip;
  59         unsigned int max_code_size;
  60         StackInfo *stack;
  61         StackInfo *sp;
  62         unsigned int max_stack_height;
  63         unsigned int vt_sp;
  64         unsigned int max_vt_sp;
  65         int n_data_items;
  66         int max_data_items;
  67         void **data_items;
  68         GHashTable *data_hash;
  69 } TransformData;
  70
  71 #define MINT_TYPE_I1 0
  72 #define MINT_TYPE_U1 1
  73 #define MINT_TYPE_I2 2
  74 #define MINT_TYPE_U2 3
  75 #define MINT_TYPE_I4 4
  76 #define MINT_TYPE_I8 5
  77 #define MINT_TYPE_R4 6
  78 #define MINT_TYPE_R8 7
  79 #define MINT_TYPE_O  8
  80 #define MINT_TYPE_P  9
  81 #define MINT_TYPE_VT 10
  82
  83 #define STACK_TYPE_I4 0
  84 #define STACK_TYPE_I8 1
  85 #define STACK_TYPE_R8 2
  86 #define STACK_TYPE_O  3
  87 #define STACK_TYPE_VT 4
  88 #define STACK_TYPE_MP 5
  89 #define STACK_TYPE_F  6
  90
  91 static const char *stack_type_string [] = { "I4", "I8", "R8", "O ", "VT", "MP", "F " };
  92
  93 #if SIZEOF_VOID_P == 8
  94 #define STACK_TYPE_I STACK_TYPE_I8
  95 #else
  96 #define STACK_TYPE_I STACK_TYPE_I4
  97 #endif
  98
  99 static int stack_type [] = {
 100         STACK_TYPE_I4, /*I1*/
 101         STACK_TYPE_I4, /*U1*/
 102         STACK_TYPE_I4, /*I2*/
 103         STACK_TYPE_I4, /*U2*/
 104         STACK_TYPE_I4, /*I4*/
 105         STACK_TYPE_I8, /*I8*/
 106         STACK_TYPE_R8, /*R4*/
 107         STACK_TYPE_R8, /*R8*/
 108         STACK_TYPE_O,  /*O*/
 109         STACK_TYPE_MP, /*P*/
 110         STACK_TYPE_VT
 111 };
 112
 113 static void
 114 grow_code (TransformData *td)
 115 {
 116         unsigned int old_ip_offset = td->new_ip - td->new_code;
 117         unsigned int old_last_ip_offset = td->last_new_ip - td->new_code;
 118         g_assert (old_ip_offset <= td->max_code_size);
 119         td->new_code = g_realloc (td->new_code, (td->max_code_size *= 2) * sizeof (td->new_code [0]));
 120         td->new_code_end = td->new_code + td->max_code_size;
 121         td->new_ip = td->new_code + old_ip_offset;
 122         td->last_new_ip = td->new_code + old_last_ip_offset;
 123 }
 124
 125 #define ENSURE_CODE(td, n) \
 126         do { \
 127                 if ((td)->new_ip + (n) > (td)->new_code_end) \
 128                         grow_code (td); \
 129         } while (0)
 130
 131 #define ADD_CODE(td, n) \
 132         do { \
 133                 if ((td)->new_ip == (td)->new_code_end) \
 134                         grow_code (td); \
 135                 *(td)->new_ip++ = (n); \
 136         } while (0)
 137
 138 #define CHECK_STACK(td, n) \
 139         do { \
 140                 int stack_size = (td)->sp - (td)->stack; \
 141                 if (stack_size < (n)) \
 142                         g_warning ("%s.%s: not enough values (%d < %d) on stack at %04x", \
 143                                 (td)->method->klass->name, (td)->method->name, \
 144                                 stack_size, n, (td)->ip - (td)->il_code); \
 145         } while (0)
 146
 147 #define ENSURE_I4(td, sp_off) \
 148         do { \
 149                 if ((td)->sp [-sp_off].type == STACK_TYPE_I8) \
 150                         ADD_CODE(td, sp_off == 1 ? MINT_CONV_I4_I8 : MINT_CONV_I4_I8_SP); \
 151         } while (0)
 152
 153 static void
 154 handle_branch(TransformData *td, int short_op, int long_op, int offset)
 155 {
 156         int shorten_branch = 0;
 157         int target = td->ip + offset - td->il_code;
 158         if (target < 0 || target >= td->code_size)
 159                 g_assert_not_reached ();
 160         if (offset > 0 && td->stack_height [target] < 0) {
 161                 td->stack_height [target] = td->sp - td->stack;
 162                 if (td->stack_height [target] > 0)
 163                         td->stack_state [target] = g_memdup (td->stack, td->stack_height [target] * sizeof (td->stack [0]));
 164                 td->vt_stack_size [target] = td->vt_sp;
 165         }
 166         if (offset < 0) {
 167                 offset = td->in_offsets [target] - (td->new_ip - td->new_code);
 168                 if (offset >= -32768) {
 169                         shorten_branch = 1;
 170                 }
 171         } else {
 172                 int prev = td->forward_refs [target];
 173                 td->forward_refs [td->ip - td->il_code] = prev;
 174                 td->forward_refs [target] = td->ip - td->il_code;
 175                 offset = 0;
 176                 if (td->header->code_size <= 25000) /* FIX to be precise somehow? */
 177                         shorten_branch = 1;
 178         }
 179         if (shorten_branch) {
 180                 ADD_CODE(td, short_op);
 181                 ADD_CODE(td, offset);
 182         } else {
 183                 ADD_CODE(td, long_op);
 184                 ADD_CODE(td, * (unsigned short *)(&offset));
 185                 ADD_CODE(td, * ((unsigned short *)&offset + 1));
 186         }
 187 }
 188
 189 static void
 190 one_arg_branch(TransformData *td, int mint_op, int offset)
 191 {
 192         int type = td->sp [-1].type == STACK_TYPE_O || td->sp [-1].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-1].type;
 193         int long_op = mint_op + type - STACK_TYPE_I4;
 194         int short_op = long_op + MINT_BRFALSE_I4_S - MINT_BRFALSE_I4;
 195         CHECK_STACK(td, 1);
 196         --td->sp;
 197         handle_branch (td, short_op, long_op, offset);
 198 }
 199
 200 static void
 201 two_arg_branch(TransformData *td, int mint_op, int offset)
 202 {
 203         int type1 = td->sp [-1].type == STACK_TYPE_O || td->sp [-1].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-1].type;
 204         int type2 = td->sp [-2].type == STACK_TYPE_O || td->sp [-2].type == STACK_TYPE_MP ? STACK_TYPE_I : td->sp [-2].type;
 205         int long_op = mint_op + type1 - STACK_TYPE_I4;
 206         int short_op = long_op + MINT_BEQ_I4_S - MINT_BEQ_I4;
 207         CHECK_STACK(td, 2);
 208         if (type1 == STACK_TYPE_I4 && type2 == STACK_TYPE_I8) {
 209                 ADD_CODE(td, MINT_CONV_I8_I4);
 210                 td->in_offsets [td->ip - td->il_code]++;
 211         } else if (type1 == STACK_TYPE_I8 && type2 == STACK_TYPE_I4) {
 212                 ADD_CODE(td, MINT_CONV_I8_I4_SP);
 213                 td->in_offsets [td->ip - td->il_code]++;
 214         } else if (type1 != type2) {
 215                 g_warning("%s.%s: branch type mismatch %d %d",
 216                         td->method->klass->name, td->method->name,
 217                         td->sp [-1].type, td->sp [-2].type);
 218         }
 219         td->sp -= 2;
 220         handle_branch (td, short_op, long_op, offset);
 221 }
 222
 223 static void
 224 unary_arith_op(TransformData *td, int mint_op)
 225 {
 226         int op = mint_op + td->sp [-1].type - STACK_TYPE_I4;
 227         CHECK_STACK(td, 1);
 228         ADD_CODE(td, op);
 229 }
 230
 231 static void
 232 binary_arith_op(TransformData *td, int mint_op)
 233 {
 234         int type1 = td->sp [-2].type;
 235         int type2 = td->sp [-1].type;
 236         int op;
 237 #if SIZEOF_VOID_P == 8
 238         if ((type1 == STACK_TYPE_MP || type1 == STACK_TYPE_I8) && type2 == STACK_TYPE_I4) {
 239                 ADD_CODE(td, MINT_CONV_I8_I4);
 240                 type2 = STACK_TYPE_I8;
 241         }
 242         if (type1 == STACK_TYPE_I4 && (type2 == STACK_TYPE_MP || type2 == STACK_TYPE_I8)) {
 243                 ADD_CODE(td, MINT_CONV_I8_I4_SP);
 244                 type1 = STACK_TYPE_I8;
 245                 td->sp [-2].type = STACK_TYPE_I8;
 246         }
 247 #endif
 248         if (type1 == STACK_TYPE_MP)
 249                 type1 = STACK_TYPE_I;
 250         if (type2 == STACK_TYPE_MP)
 251                 type2 = STACK_TYPE_I;
 252         if (type1 != type2) {
 253                 g_warning("%s.%s: %04x arith type mismatch %s %d %d",
 254                         td->method->klass->name, td->method->name,
 255                         td->ip - td->il_code, mono_interp_opname[mint_op], type1, type2);
 256         }
 257         op = mint_op + type1 - STACK_TYPE_I4;
 258         CHECK_STACK(td, 2);
 259         ADD_CODE(td, op);
 260         --td->sp;
 261 }
 262
 263 static void
 264 binary_int_op(TransformData *td, int mint_op)
 265 {
 266         int op = mint_op + td->sp [-1].type - STACK_TYPE_I4;
 267         CHECK_STACK(td, 2);
 268         if (td->sp [-1].type != td->sp [-2].type)
 269                 g_warning("%s.%s: int type mismatch", td->method->klass->name, td->method->name);
 270         ADD_CODE(td, op);
 271         --td->sp;
 272 }
 273
 274 static void
 275 shift_op(TransformData *td, int mint_op)
 276 {
 277         int op = mint_op + td->sp [-2].type - STACK_TYPE_I4;
 278         CHECK_STACK(td, 2);
 279         if (td->sp [-1].type != STACK_TYPE_I4) {
 280                 g_warning("%s.%s: shift type mismatch %d",
 281                         td->method->klass->name, td->method->name,
 282                         td->sp [-2].type);
 283         }
 284         ADD_CODE(td, op);
 285         --td->sp;
 286 }
 287
 288 static int
 289 mint_type(MonoType *type)
 290 {
 291         if (type->byref)
 292                 return MINT_TYPE_P;
 293 enum_type:
 294         switch (type->type) {
 295         case MONO_TYPE_I1:
 296                 return MINT_TYPE_I1;
 297         case MONO_TYPE_U1:
 298         case MONO_TYPE_BOOLEAN:
 299                 return MINT_TYPE_U1;
 300         case MONO_TYPE_I2:
 301                 return MINT_TYPE_I2;
 302         case MONO_TYPE_U2:
 303         case MONO_TYPE_CHAR:
 304                 return MINT_TYPE_U2;
 305         case MONO_TYPE_I4:
 306         case MONO_TYPE_U4:
 307                 return MINT_TYPE_I4;
 308         case MONO_TYPE_I:
 309         case MONO_TYPE_U:
 310 #if SIZEOF_VOID_P == 4
 311                 return MINT_TYPE_I4;
 312 #else
 313                 return MINT_TYPE_I8;
 314 #endif
 315         case MONO_TYPE_PTR:
 316                 return MINT_TYPE_P;
 317         case MONO_TYPE_R4:
 318                 return MINT_TYPE_R4;
 319         case MONO_TYPE_I8:
 320         case MONO_TYPE_U8:
 321                 return MINT_TYPE_I8;
 322         case MONO_TYPE_R8:
 323                 return MINT_TYPE_R8;
 324         case MONO_TYPE_STRING:
 325         case MONO_TYPE_SZARRAY:
 326         case MONO_TYPE_CLASS:
 327         case MONO_TYPE_OBJECT:
 328         case MONO_TYPE_ARRAY:
 329                 return MINT_TYPE_O;
 330         case MONO_TYPE_VALUETYPE:
 331                 if (type->data.klass->enumtype) {
 332                         type = type->data.klass->enum_basetype;
 333                         goto enum_type;
 334                 } else
 335                         return MINT_TYPE_VT;
 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         if (n == 0 && td->method->signature->hasthis) {
 440                 if (td->method->klass->valuetype)
 441                         mt = MINT_TYPE_P;
 442                 else {
 443                         mt = MINT_TYPE_O;
 444                         klass = td->method->klass;
 445                 }
 446                 ADD_CODE(td, MINT_LDTHIS);
 447         } else {
 448                 MonoType *type;
 449                 n -= td->method->signature->hasthis;
 450                 type = td->method->signature->params [n];
 451                 mt = mint_type (type);
 452                 if (mt == MINT_TYPE_VT) {
 453                         gint32 size;
 454                         if (td->method->signature->pinvoke)
 455                                 size = mono_class_native_size (type->data.klass, NULL);
 456                         else
 457                                 size = mono_class_value_size (type->data.klass, NULL);
 458                         PUSH_VT(td, size);
 459                         ADD_CODE(td, MINT_LDARG_VT);
 460                         ADD_CODE(td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 461                         WRITE32(td, &size);
 462                         klass = type->data.klass;
 463                 } else {
 464                         ADD_CODE(td, MINT_LDARG_I1 + (mt - MINT_TYPE_I1));
 465                         ADD_CODE(td, td->rtm->arg_offsets [n]); /* FIX for large offset */
 466                         if (mt == MINT_TYPE_O)
 467                                 klass = mono_class_from_mono_type (type);
 468                 }
 469         }
 470         PUSH_TYPE(td, stack_type[mt], klass);
 471 }
 472
 473 static void
 474 store_arg(TransformData *td, int n)
 475 {
 476         int mt;
 477         CHECK_STACK (td, 1);
 478         if (n == 0 && td->method->signature->hasthis)
 479                 ADD_CODE(td, MINT_STTHIS);
 480         else {
 481                 MonoType *type;
 482                 n -= td->method->signature->hasthis;
 483                 type = td->method->signature->params [n];
 484                 mt = mint_type (type);
 485                 if (mt == MINT_TYPE_VT) {
 486                         gint32 size;
 487                         if (td->method->signature->pinvoke)
 488                                 size = mono_class_native_size (type->data.klass, NULL);
 489                         else
 490                                 size = mono_class_value_size (type->data.klass, NULL);
 491                         ADD_CODE(td, MINT_STARG_VT);
 492                         ADD_CODE(td, n);
 493                         WRITE32(td, &size);
 494                         if (td->sp [-1].type == STACK_TYPE_VT)
 495                                 POP_VT(td, size);
 496                 } else {
 497                         ADD_CODE(td, MINT_STARG_I1 + (mt - MINT_TYPE_I1));
 498                         ADD_CODE(td, td->rtm->arg_offsets [n]);
 499                 }
 500         }
 501         --td->sp;
 502 }
 503
 504 static void
 505 store_inarg(TransformData *td, int n)
 506 {
 507         MonoType *type = td->method->signature->params [n];
 508         int mt = mint_type (type);
 509         if (mt == MINT_TYPE_VT) {
 510                 gint32 size;
 511                 if (td->method->signature->pinvoke)
 512                         size = mono_class_native_size (type->data.klass, NULL);
 513                 else
 514                         size = mono_class_value_size (type->data.klass, NULL);
 515                 ADD_CODE(td, MINT_STINARG_VT);
 516                 ADD_CODE(td, n);
 517                 WRITE32(td, &size);
 518         } else {
 519                 ADD_CODE(td, MINT_STINARG_I1 + (mt - MINT_TYPE_I1));
 520                 ADD_CODE(td, n);
 521         }
 522 }
 523
 524 static void
 525 load_local(TransformData *td, int n)
 526 {
 527         MonoType *type = td->header->locals [n];
 528         int mt = mint_type (type);
 529         int offset = td->rtm->local_offsets [n];
 530         MonoClass *klass = NULL;
 531         if (mt == MINT_TYPE_VT) {
 532                 gint32 size = mono_class_value_size (type->data.klass, NULL);
 533                 PUSH_VT(td, size);
 534                 ADD_CODE(td, MINT_LDLOC_VT);
 535                 ADD_CODE(td, offset); /*FIX for large offset */
 536                 WRITE32(td, &size);
 537                 klass = type->data.klass;
 538         } else {
 539                 if (mt == MINT_TYPE_I4 && !td->is_bb_start [td->in_start - td->il_code] && td->last_new_ip != NULL &&
 540                         td->last_new_ip [0] == MINT_STLOC_I4 && td->last_new_ip [1] == offset) {
 541                         td->last_new_ip [0] = MINT_STLOC_NP_I4;
 542                 } else if (mt == MINT_TYPE_O && !td->is_bb_start [td->in_start - td->il_code] && td->last_new_ip != NULL &&
 543                         td->last_new_ip [0] == MINT_STLOC_O && td->last_new_ip [1] == offset) {
 544                         td->last_new_ip [0] = MINT_STLOC_NP_O;
 545                 } else {
 546                         ADD_CODE(td, MINT_LDLOC_I1 + (mt - MINT_TYPE_I1));
 547                         ADD_CODE(td, offset); /*FIX for large offset */
 548                 }
 549                 if (mt == MINT_TYPE_O)
 550                         klass = mono_class_from_mono_type (type);
 551         }
 552         PUSH_TYPE(td, stack_type[mt], klass);
 553 }
 554
 555 static void
 556 store_local(TransformData *td, int n)
 557 {
 558         MonoType *type = td->header->locals [n];
 559         int mt = mint_type (type);
 560         int offset = td->rtm->local_offsets [n];
 561         CHECK_STACK (td, 1);
 562 #if SIZEOF_VOID_P == 8
 563         if (td->sp [-1].type == STACK_TYPE_I4 && stack_type [mt] == STACK_TYPE_I8) {
 564                 ADD_CODE(td, MINT_CONV_I8_I4);
 565                 td->sp [-1].type = STACK_TYPE_I8;
 566         }
 567 #endif
 568         if (!can_store(td->sp [-1].type, stack_type [mt])) {
 569                 g_warning("%s.%s: Store local stack type mismatch %d %d",
 570                         td->method->klass->name, td->method->name,
 571                         stack_type [mt], td->sp [-1].type);
 572         }
 573         if (mt == MINT_TYPE_VT) {
 574                 gint32 size = mono_class_value_size (type->data.klass, NULL);
 575                 ADD_CODE(td, MINT_STLOC_VT);
 576                 ADD_CODE(td, offset); /*FIX for large offset */
 577                 WRITE32(td, &size);
 578                 if (td->sp [-1].type == STACK_TYPE_VT)
 579                         POP_VT(td, size);
 580         } else {
 581                 ADD_CODE(td, MINT_STLOC_I1 + (mt - MINT_TYPE_I1));
 582                 ADD_CODE(td, offset); /*FIX for large offset */
 583         }
 584         --td->sp;
 585 }
 586
 587 #define SIMPLE_OP(td, op) \
 588         do { \
 589                 ADD_CODE(&td, op); \
 590                 ++td.ip; \
 591         } while (0)
 592
 593 static guint16
 594 get_data_item_index (TransformData *td, void *ptr)
 595 {
 596         gpointer p = g_hash_table_lookup (td->data_hash, ptr);
 597         guint index;
 598         if (p != NULL)
 599                 return GPOINTER_TO_UINT (p) - 1;
 600         if (td->max_data_items == td->n_data_items) {
 601                 td->max_data_items = td->n_data_items == 0 ? 16 : 2 * td->max_data_items;
 602                 td->data_items = g_realloc (td->data_items, td->max_data_items * sizeof(td->data_items [0]));
 603         }
 604         index = td->n_data_items;
 605         td->data_items [index] = ptr;
 606         ++td->n_data_items;
 607         g_hash_table_insert (td->data_hash, ptr, GUINT_TO_POINTER (index + 1));
 608         return index;
 609 }
 610
 611 static void
 612 generate(MonoMethod *method, RuntimeMethod *rtm, unsigned char *is_bb_start)
 613 {
 614         MonoMethodHeader *header = ((MonoMethodNormal*)method)->header;
 615         MonoMethodSignature *signature = method->signature;
 616         MonoImage *image = method->klass->image;
 617         MonoDomain *domain = mono_domain_get ();
 618         MonoGenericContext *generic_context = NULL;
 619         int offset, mt;
 620         int i;
 621         int i32;
 622         MonoClass *klass;
 623         MonoClassField *field;
 624         const unsigned char *end;
 625         int new_in_start_offset;
 626         int body_start_offset;
 627         int target;
 628         guint32 token;
 629         TransformData td;
 630         int generating_code = 1;
 631
 632         if (method->signature->is_inflated)
 633                 generic_context = ((MonoMethodInflated *) method)->context;
 634
 635         memset(&td, 0, sizeof(td));
 636         td.method = method;
 637         td.rtm = rtm;
 638         td.is_bb_start = is_bb_start;
 639         td.il_code = header->code;
 640         td.code_size = header->code_size;
 641         td.header = header;
 642         td.max_code_size = td.code_size;
 643         td.new_code = (unsigned short *)g_malloc(td.max_code_size * sizeof(gushort));
 644         td.new_code_end = td.new_code + td.max_code_size;
 645         td.in_offsets = g_malloc0(header->code_size * sizeof(int));
 646         td.forward_refs = g_malloc(header->code_size * sizeof(int));
 647         td.stack_state = g_malloc0(header->code_size * sizeof(StackInfo *));
 648         td.stack_height = g_malloc(header->code_size * sizeof(int));
 649         td.vt_stack_size = g_malloc(header->code_size * sizeof(int));
 650         td.n_data_items = 0;
 651         td.max_data_items = 0;
 652         td.data_items = NULL;
 653         td.data_hash = g_hash_table_new (NULL, NULL);
 654         rtm->data_items = td.data_items;
 655         for (i = 0; i < header->code_size; i++) {
 656                 td.forward_refs [i] = -1;
 657                 td.stack_height [i] = -1;
 658         }
 659         td.new_ip = td.new_code;
 660         td.last_new_ip = NULL;
 661
 662         td.stack = g_malloc0(header->max_stack * sizeof(td.stack[0]));
 663         td.sp = td.stack;
 664         td.max_stack_height = 0;
 665
 666         for (i = 0; i < header->num_clauses; i++) {
 667                 MonoExceptionClause *c = header->clauses + i;
 668                 td.stack_height [c->handler_offset] = 0;
 669                 td.vt_stack_size [c->handler_offset] = 0;
 670                 td.is_bb_start [c->handler_offset] = 1;
 671                 if (c->flags == MONO_EXCEPTION_CLAUSE_NONE) {
 672                         td.stack_height [c->handler_offset] = 1;
 673                         td.stack_state [c->handler_offset] = g_malloc0(sizeof(StackInfo));
 674                         td.stack_state [c->handler_offset][0].type = STACK_TYPE_O;
 675                         td.stack_state [c->handler_offset][0].klass = NULL; /*FIX*/
 676                 }
 677         }
 678
 679         td.ip = header->code;
 680         end = td.ip + header->code_size;
 681
 682         if (mono_interp_traceopt) {
 683                 char *tmp = mono_disasm_code (NULL, method, td.ip, end);
 684                 char *name = mono_method_full_name (method, TRUE);
 685                 g_print ("Method %s, original code:\n", name);
 686                 g_print ("%s\n", tmp);
 687                 g_free (tmp);
 688                 g_free (name);
 689         }
 690
 691         for (i = 0; i < signature->param_count; i++)
 692                 store_inarg(&td, i);
 693
 694         body_start_offset = td.new_ip - td.new_code;
 695
 696         for (i = 0; i < header->num_locals; i++) {
 697                 int mt = mint_type(header->locals [i]);
 698                 if (mt == MINT_TYPE_VT || mt == MINT_TYPE_O) {
 699                         ADD_CODE(&td, MINT_INITLOCALS);
 700                         break;
 701                 }
 702         }
 703
 704         while (td.ip < end) {
 705                 int in_offset;
 706
 707                 g_assert (td.sp >= td.stack);
 708                 g_assert (td.vt_sp < 0x10000000);
 709                 in_offset = td.ip - header->code;
 710                 td.in_offsets [in_offset] = td.new_ip - td.new_code;
 711                 new_in_start_offset = td.new_ip - td.new_code;
 712                 td.in_start = td.ip;
 713                 while (td.forward_refs [in_offset] >= 0) {
 714                         int j = td.forward_refs [in_offset];
 715                         int slot;
 716                         td.forward_refs [in_offset] = td.forward_refs [j];
 717                         if (td.in_offsets [j] < 0) {
 718                                 int old_switch_offset = -td.in_offsets [j];
 719                                 int new_switch_offset = td.in_offsets [old_switch_offset];
 720                                 int switch_case = (j - old_switch_offset - 5) / 4;
 721                                 int n_cases = read32 (header->code + old_switch_offset + 1);
 722                                 offset = (td.new_ip - td.new_code) - (new_switch_offset + 2 * n_cases + 3);
 723                                 slot = new_switch_offset + 3 + 2 * switch_case;
 724                                 td.new_code [slot] = * (unsigned short *)(&offset);
 725                                 td.new_code [slot + 1] = * ((unsigned short *)&offset + 1);
 726                         } else {
 727                                 int op = td.new_code [td.in_offsets [j]];
 728                                 if (mono_interp_opargtype [op] == MintOpShortBranch) {
 729                                         offset = (td.new_ip - td.new_code) - td.in_offsets [j];
 730                                         g_assert (offset <= 32767);
 731                                         slot = td.in_offsets [j] + 1;
 732                                         td.new_code [slot] = offset;
 733                                 } else {
 734                                         offset = (td.new_ip - td.new_code) - td.in_offsets [j];
 735                                         slot = td.in_offsets [j] + 1;
 736                                         td.new_code [slot] = * (unsigned short *)(&offset);
 737                                         td.new_code [slot + 1] = * ((unsigned short *)&offset + 1);
 738                                 }
 739                         }
 740                 }
 741                 if (td.stack_height [in_offset] >= 0) {
 742                         g_assert (is_bb_start [in_offset]);
 743                         if (td.stack_height [in_offset] > 0)
 744                                 memcpy (td.stack, td.stack_state [in_offset], td.stack_height [in_offset] * sizeof(td.stack [0]));
 745                         td.sp = td.stack + td.stack_height [in_offset];
 746                         td.vt_sp = td.vt_stack_size [in_offset];
 747                 }
 748                 if (is_bb_start [in_offset]) {
 749                         generating_code = 1;
 750                 }
 751                 if (!generating_code) {
 752                         while (td.ip < end && !is_bb_start [td.ip - td.il_code])
 753                                 ++td.ip;
 754                         continue;
 755                 }
 756                 if (mono_interp_traceopt > 1) {
 757                         printf("IL_%04x %s %-10s -> IL_%04x, sp %d, %s %-12s vt_sp %u (max %u)\n",
 758                                 td.ip - td.il_code,
 759                                 td.is_bb_start [td.ip - td.il_code] == 3 ? "<>" :
 760                                 td.is_bb_start [td.ip - td.il_code] == 2 ? "< " :
 761                                 td.is_bb_start [td.ip - td.il_code] == 1 ? " >" : "  ",
 762                                 mono_opcode_names [*td.ip], td.new_ip - td.new_code, td.sp - td.stack,
 763                                 td.sp > td.stack ? stack_type_string [td.sp [-1].type] : "  ",
 764                                 (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) : "",
 765                                 td.vt_sp, td.max_vt_sp);
 766                 }
 767                 switch (*td.ip) {
 768                 case CEE_NOP:
 769                         /* lose it */
 770                         ++td.ip;
 771                         break;
 772                 case CEE_BREAK:
 773                         SIMPLE_OP(td, MINT_BREAK);
 774                         break;
 775                 case CEE_LDARG_0:
 776                 case CEE_LDARG_1:
 777                 case CEE_LDARG_2:
 778                 case CEE_LDARG_3:
 779                         load_arg (&td, *td.ip - CEE_LDARG_0);
 780                         ++td.ip;
 781                         break;
 782                 case CEE_LDLOC_0:
 783                 case CEE_LDLOC_1:
 784                 case CEE_LDLOC_2:
 785                 case CEE_LDLOC_3:
 786                         load_local (&td, *td.ip - CEE_LDLOC_0);
 787                         ++td.ip;
 788                         break;
 789                 case CEE_STLOC_0:
 790                 case CEE_STLOC_1:
 791                 case CEE_STLOC_2:
 792                 case CEE_STLOC_3:
 793                         store_local (&td, *td.ip - CEE_STLOC_0);
 794                         ++td.ip;
 795                         break;
 796                 case CEE_LDARG_S:
 797                         load_arg (&td, ((guint8 *)td.ip)[1]);
 798                         td.ip += 2;
 799                         break;
 800                 case CEE_LDARGA_S: {
 801                         int n = ((guint8 *)td.ip)[1];
 802                         if (n == 0 && signature->hasthis)
 803                                 ADD_CODE(&td, MINT_LDTHISA);
 804                         else {
 805                                 ADD_CODE(&td, MINT_LDARGA);
 806                                 ADD_CODE(&td, td.rtm->arg_offsets [n - signature->hasthis]);
 807                         }
 808                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
 809                         td.ip += 2;
 810                         break;
 811                 }
 812                 case CEE_STARG_S:
 813                         store_arg (&td, ((guint8 *)td.ip)[1]);
 814                         td.ip += 2;
 815                         break;
 816                 case CEE_LDLOC_S:
 817                         load_local (&td, ((guint8 *)td.ip)[1]);
 818                         td.ip += 2;
 819                         break;
 820                 case CEE_LDLOCA_S:
 821                         ADD_CODE(&td, MINT_LDLOCA_S);
 822                         ADD_CODE(&td, td.rtm->local_offsets [((guint8 *)td.ip)[1]]);
 823                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
 824                         td.ip += 2;
 825                         break;
 826                 case CEE_STLOC_S:
 827                         store_local (&td, ((guint8 *)td.ip)[1]);
 828                         td.ip += 2;
 829                         break;
 830                 case CEE_LDNULL:
 831                         SIMPLE_OP(td, MINT_LDNULL);
 832                         PUSH_TYPE(&td, STACK_TYPE_O, NULL);
 833                         break;
 834                 case CEE_LDC_I4_M1:
 835                         SIMPLE_OP(td, MINT_LDC_I4_M1);
 836                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
 837                         break;
 838                 case CEE_LDC_I4_0:
 839                         if (!td.is_bb_start[td.ip + 1 - td.il_code] && td.ip [1] == 0xfe && td.ip [2] == CEE_CEQ &&
 840                                 td.sp > td.stack && td.sp [-1].type == STACK_TYPE_I4) {
 841                                 SIMPLE_OP(td, MINT_CEQ0_I4);
 842                                 td.ip += 2;
 843                         } else {
 844                                 SIMPLE_OP(td, MINT_LDC_I4_0);
 845                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
 846                         }
 847                         break;
 848                 case CEE_LDC_I4_1:
 849                         if (!td.is_bb_start[td.ip + 1 - td.il_code] &&
 850                                 (td.ip [1] == CEE_ADD || td.ip [1] == CEE_SUB) && td.sp [-1].type == STACK_TYPE_I4) {
 851                                 ADD_CODE(&td, td.ip [1] == CEE_ADD ? MINT_ADD1_I4 : MINT_SUB1_I4);
 852                                 td.ip += 2;
 853                         } else {
 854                                 SIMPLE_OP(td, MINT_LDC_I4_1);
 855                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
 856                         }
 857                         break;
 858                 case CEE_LDC_I4_2:
 859                 case CEE_LDC_I4_3:
 860                 case CEE_LDC_I4_4:
 861                 case CEE_LDC_I4_5:
 862                 case CEE_LDC_I4_6:
 863                 case CEE_LDC_I4_7:
 864                 case CEE_LDC_I4_8:
 865                         SIMPLE_OP(td, (*td.ip - CEE_LDC_I4_0) + MINT_LDC_I4_0);
 866                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
 867                         break;
 868                 case CEE_LDC_I4_S:
 869                         ADD_CODE(&td, MINT_LDC_I4_S);
 870                         ADD_CODE(&td, ((gint8 *) td.ip) [1]);
 871                         td.ip += 2;
 872                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
 873                         break;
 874                 case CEE_LDC_I4:
 875                         i32 = read32 (td.ip + 1);
 876                         ADD_CODE(&td, MINT_LDC_I4);
 877                         WRITE32(&td, &i32);
 878                         td.ip += 5;
 879                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
 880                         break;
 881                 case CEE_LDC_I8: {
 882                         gint64 val = read64 (td.ip + 1);
 883                         ADD_CODE(&td, MINT_LDC_I8);
 884                         WRITE64(&td, &val);
 885                         td.ip += 9;
 886                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I8);
 887                         break;
 888                 }
 889                 case CEE_LDC_R4: {
 890                         float val;
 891                         readr4 (td.ip + 1, &val);
 892                         ADD_CODE(&td, MINT_LDC_R4);
 893                         WRITE32(&td, &val);
 894                         td.ip += 5;
 895                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_R8);
 896                         break;
 897                 }
 898                 case CEE_LDC_R8: {
 899                         double val;
 900                         readr8 (td.ip + 1, &val);
 901                         ADD_CODE(&td, MINT_LDC_R8);
 902                         WRITE64(&td, &val);
 903                         td.ip += 9;
 904                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_R8);
 905                         break;
 906                 }
 907                 case CEE_DUP: {
 908                         int type = td.sp [-1].type;
 909                         MonoClass *klass = td.sp [-1].klass;
 910                         if (td.sp [-1].type == STACK_TYPE_VT)
 911                                 g_warning ("dup of value type not implemented");
 912                         SIMPLE_OP(td, MINT_DUP);
 913                         PUSH_TYPE(&td, type, klass);
 914                         break;
 915                 }
 916                 case CEE_POP:
 917                         CHECK_STACK(&td, 1);
 918                         SIMPLE_OP(td, MINT_POP);
 919                         if (td.sp [-1].type == STACK_TYPE_VT) {
 920                                 int size = mono_class_value_size (td.sp [-1].klass, NULL);
 921                                 size = (size + 7) & ~7;
 922                                 ADD_CODE(&td, MINT_VTRESULT);
 923                                 ADD_CODE(&td, 0);
 924                                 WRITE32(&td, &size);
 925                                 td.vt_sp -= size;
 926                         }
 927                         --td.sp;
 928                         break;
 929                 case CEE_JMP: {
 930                         MonoMethod *m;
 931                         if (td.sp > td.stack)
 932                                 g_warning ("CEE_JMP: stack must be empty");
 933                         token = read32 (td.ip + 1);
 934                         m = mono_get_method_full (image, token, NULL, generic_context);
 935                         ADD_CODE(&td, MINT_JMP);
 936                         ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (m)));
 937                         td.ip += 5;
 938                         break;
 939                 }
 940                 case CEE_CALLVIRT: /* Fall through */
 941                 case CEE_CALLI:    /* Fall through */
 942                 case CEE_CALL: {
 943                         MonoMethod *m;
 944                         MonoMethodSignature *csignature;
 945                         int virtual = *td.ip == CEE_CALLVIRT;
 946                         int calli = *td.ip == CEE_CALLI;
 947                         int i;
 948                         guint32 vt_stack_used = 0;
 949                         guint32 vt_res_size = 0;
 950                         int op = -1;
 951                         int native = 0;
 952                         int is_void = 0;
 953
 954                         token = read32 (td.ip + 1);
 955                         if (calli) {
 956                                 CHECK_STACK(&td, 1);
 957                                 native = (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE && td.sp [-1].type == STACK_TYPE_I);
 958                                 --td.sp;
 959                                 if (method->wrapper_type != MONO_WRAPPER_NONE)
 960                                         csignature = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
 961                                 else
 962                                         csignature = mono_metadata_parse_signature (image, token);
 963                                 m = NULL;
 964                         } else {
 965                                 if (method->wrapper_type == MONO_WRAPPER_NONE)
 966                                         m = mono_get_method_full (image, token, NULL, generic_context);
 967                                 else
 968                                         m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
 969                                 csignature = m->signature;
 970                                 if (m->klass == mono_defaults.string_class) {
 971                                         if (m->name [0] == 'g') {
 972                                                 if (strcmp (m->name, "get_Chars") == 0)
 973                                                         op = MINT_GETCHR;
 974                                                 else if (strcmp (m->name, "get_Length") == 0)
 975                                                         op = MINT_STRLEN;
 976                                         }
 977                                 } else if (m->klass == mono_defaults.array_class) {
 978                                         if (strcmp (m->name, "get_Rank") == 0)
 979                                                 op = MINT_ARRAY_RANK;
 980                                         else if (strcmp (m->name, "get_Length") == 0)
 981                                                 op = MINT_LDLEN;
 982                                 }
 983                         }
 984                         CHECK_STACK(&td, csignature->param_count + csignature->hasthis);
 985                         if (!calli && (!virtual || (m->flags & METHOD_ATTRIBUTE_VIRTUAL) == 0) &&
 986                                 (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) == 0 &&
 987                                 (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) == 0) {
 988                                 int called_inited = mono_class_vtable (domain, m->klass)->initialized;
 989                                 MonoMethodHeader *mheader = ((MonoMethodNormal*)m)->header;
 990
 991                                 if (/*mono_metadata_signature_equal (method->signature, m->signature) */ method == m && *(td.ip + 5) == CEE_RET) {
 992                                         int offset;
 993                                         if (mono_interp_traceopt)
 994                                                 g_print ("Optimize tail call of %s.%s\n", m->klass->name, m->name);
 995                                         for (i = csignature->param_count - 1; i >= 0; --i)
 996                                                 store_arg (&td, i + csignature->hasthis);
 997
 998                                         if (csignature->hasthis) {
 999                                                 ADD_CODE(&td, MINT_STTHIS);
1000                                                 --td.sp;
1001                                         }
1002                                         ADD_CODE(&td, MINT_BR_S);
1003                                         offset = body_start_offset - ((td.new_ip - 1) - td.new_code);
1004                                         ADD_CODE(&td, offset);
1005                                         if (!is_bb_start [td.ip + 5 - td.il_code])
1006                                                 ++td.ip; /* gobble the CEE_RET if it isn't branched to */
1007                                         td.ip += 5;
1008                                         break;
1009                                 } else {
1010
1011                                         if (*mheader->code == CEE_RET && called_inited) {
1012                                                 if (mono_interp_traceopt)
1013                                                         g_print ("Inline (empty) call of %s.%s\n", m->klass->name, m->name);
1014                                                 for (i = 0; i < csignature->param_count; i++)
1015                                                         ADD_CODE(&td, MINT_POP); /*FIX: vt */
1016                                                 if (csignature->hasthis) {
1017                                                         if (virtual)
1018                                                                 ADD_CODE(&td, MINT_CKNULL);
1019                                                         ADD_CODE(&td, MINT_POP);
1020                                                 }
1021                                                 td.sp -= csignature->param_count + csignature->hasthis;
1022                                                 td.ip += 5;
1023                                                 break;
1024                                         }
1025                                 }
1026                         }
1027                         if (method->wrapper_type == MONO_WRAPPER_NONE && m != NULL) {
1028                                 if (m->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
1029                                         m = mono_marshal_get_native_wrapper (m);
1030                                 if (!virtual && m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1031                                         m = mono_marshal_get_synchronized_wrapper (m);
1032                         }
1033                         g_assert (csignature->call_convention == MONO_CALL_DEFAULT || csignature->call_convention == MONO_CALL_C);
1034                         td.sp -= csignature->param_count + csignature->hasthis;
1035                         for (i = 0; i < csignature->param_count; ++i) {
1036                                 if (td.sp [i + csignature->hasthis].type == STACK_TYPE_VT) {
1037                                         gint32 size;
1038                                         if (csignature->pinvoke && method->wrapper_type != MONO_WRAPPER_NONE)
1039                                                 size = mono_class_native_size (csignature->params [i]->data.klass, NULL);
1040                                         else
1041                                                 size = mono_class_value_size (csignature->params [i]->data.klass, NULL);
1042                                         size = (size + 7) & ~7;
1043                                         vt_stack_used += size;
1044                                 }
1045                         }
1046
1047                         /* need to handle typedbyref ... */
1048                         if (csignature->ret->type != MONO_TYPE_VOID) {
1049                                 int mt = mint_type(csignature->ret);
1050                                 MonoClass *klass = NULL;
1051                                 if (mt == MINT_TYPE_VT) {
1052                                         if (csignature->pinvoke && method->wrapper_type != MONO_WRAPPER_NONE)
1053                                                 vt_res_size = mono_class_native_size (csignature->ret->data.klass, NULL);
1054                                         else
1055                                                 vt_res_size = mono_class_value_size (csignature->ret->data.klass, NULL);
1056                                         PUSH_VT(&td, vt_res_size);
1057                                         klass = csignature->ret->data.klass;
1058                                 } else if (mt == MINT_TYPE_O)
1059                                         klass = mono_class_from_mono_type (csignature->ret);
1060                                 PUSH_TYPE(&td, stack_type[mt], klass);
1061                         } else
1062                                 is_void = TRUE;
1063
1064                         if (op >= 0) {
1065                                 ADD_CODE(&td, op);
1066 #if SIZEOF_VOID_P == 8
1067                                 if (op == MINT_LDLEN)
1068                                         ADD_CODE(&td, MINT_CONV_I4_I8);
1069 #endif
1070                         } else {
1071                                 if (calli)
1072                                         ADD_CODE(&td, native ? MINT_CALLI_NAT : MINT_CALLI);
1073                                 else if (virtual)
1074                                         ADD_CODE(&td, is_void ? MINT_VCALLVIRT : MINT_CALLVIRT);
1075                                 else
1076                                         ADD_CODE(&td, is_void ? MINT_VCALL : MINT_CALL);
1077                                 ADD_CODE(&td, get_data_item_index (&td,  calli? (void *)csignature : (void *)mono_interp_get_runtime_method (m)));
1078                         }
1079                         td.ip += 5;
1080                         if (vt_stack_used != 0 || vt_res_size != 0) {
1081                                 ADD_CODE(&td, MINT_VTRESULT);
1082                                 ADD_CODE(&td, vt_res_size);
1083                                 WRITE32(&td, &vt_stack_used);
1084                                 td.vt_sp -= vt_stack_used;
1085                         }
1086                         break;
1087                 }
1088                 case CEE_RET: {
1089                         int vt_size = 0;
1090                         if (signature->ret->type != MONO_TYPE_VOID) {
1091                                 --td.sp;
1092                                 if (mint_type(signature->ret) == MINT_TYPE_VT) {
1093                                         vt_size = mono_class_value_size (signature->ret->data.klass, NULL);
1094                                         vt_size = (vt_size + 7) & ~7;
1095                                 }
1096                         }
1097                         if (td.sp > td.stack)
1098                                 g_warning ("%s.%s: CEE_RET: more values on stack: %d", td.method->klass->name, td.method->name, td.sp - td.stack);
1099                         if (td.vt_sp != vt_size)
1100                                 g_warning ("%s.%s: CEE_RET: value type stack: %d", td.method->klass->name, td.method->name, td.vt_sp);
1101                         if (vt_size == 0)
1102                                 SIMPLE_OP(td, signature->ret->type == MONO_TYPE_VOID ? MINT_RET_VOID : MINT_RET);
1103                         else {
1104                                 ADD_CODE(&td, MINT_RET_VT);
1105                                 WRITE32(&td, &vt_size);
1106                                 ++td.ip;
1107                         }
1108                         generating_code = 0;
1109                         break;
1110                 }
1111                 case CEE_BR:
1112                         handle_branch (&td, MINT_BR_S, MINT_BR, 5 + read32 (td.ip + 1));
1113                         td.ip += 5;
1114                         generating_code = 0;
1115                         break;
1116                 case CEE_BR_S:
1117                         handle_branch (&td, MINT_BR_S, MINT_BR, 2 + (gint8)td.ip [1]);
1118                         td.ip += 2;
1119                         generating_code = 0;
1120                         break;
1121                 case CEE_BRFALSE:
1122                         one_arg_branch (&td, MINT_BRFALSE_I4, 5 + read32 (td.ip + 1));
1123                         td.ip += 5;
1124                         break;
1125                 case CEE_BRFALSE_S:
1126                         one_arg_branch (&td, MINT_BRFALSE_I4, 2 + (gint8)td.ip [1]);
1127                         td.ip += 2;
1128                         break;
1129                 case CEE_BRTRUE:
1130                         one_arg_branch (&td, MINT_BRTRUE_I4, 5 + read32 (td.ip + 1));
1131                         td.ip += 5;
1132                         break;
1133                 case CEE_BRTRUE_S:
1134                         one_arg_branch (&td, MINT_BRTRUE_I4, 2 + (gint8)td.ip [1]);
1135                         td.ip += 2;
1136                         break;
1137                 case CEE_BEQ:
1138                         two_arg_branch (&td, MINT_BEQ_I4, 5 + read32 (td.ip + 1));
1139                         td.ip += 5;
1140                         break;
1141                 case CEE_BEQ_S:
1142                         two_arg_branch (&td, MINT_BEQ_I4, 2 + (gint8) td.ip [1]);
1143                         td.ip += 2;
1144                         break;
1145                 case CEE_BGE:
1146                         two_arg_branch (&td, MINT_BGE_I4, 5 + read32 (td.ip + 1));
1147                         td.ip += 5;
1148                         break;
1149                 case CEE_BGE_S:
1150                         two_arg_branch (&td, MINT_BGE_I4, 2 + (gint8) td.ip [1]);
1151                         td.ip += 2;
1152                         break;
1153                 case CEE_BGT:
1154                         two_arg_branch (&td, MINT_BGT_I4, 5 + read32 (td.ip + 1));
1155                         td.ip += 5;
1156                         break;
1157                 case CEE_BGT_S:
1158                         two_arg_branch (&td, MINT_BGT_I4, 2 + (gint8) td.ip [1]);
1159                         td.ip += 2;
1160                         break;
1161                 case CEE_BLT:
1162                         two_arg_branch (&td, MINT_BLT_I4, 5 + read32 (td.ip + 1));
1163                         td.ip += 5;
1164                         break;
1165                 case CEE_BLT_S:
1166                         two_arg_branch (&td, MINT_BLT_I4, 2 + (gint8) td.ip [1]);
1167                         td.ip += 2;
1168                         break;
1169                 case CEE_BLE:
1170                         two_arg_branch (&td, MINT_BLE_I4, 5 + read32 (td.ip + 1));
1171                         td.ip += 5;
1172                         break;
1173                 case CEE_BLE_S:
1174                         two_arg_branch (&td, MINT_BLE_I4, 2 + (gint8) td.ip [1]);
1175                         td.ip += 2;
1176                         break;
1177                 case CEE_BNE_UN:
1178                         two_arg_branch (&td, MINT_BNE_UN_I4, 5 + read32 (td.ip + 1));
1179                         td.ip += 5;
1180                         break;
1181                 case CEE_BNE_UN_S:
1182                         two_arg_branch (&td, MINT_BNE_UN_I4, 2 + (gint8) td.ip [1]);
1183                         td.ip += 2;
1184                         break;
1185                 case CEE_BGE_UN:
1186                         two_arg_branch (&td, MINT_BGE_UN_I4, 5 + read32 (td.ip + 1));
1187                         td.ip += 5;
1188                         break;
1189                 case CEE_BGE_UN_S:
1190                         two_arg_branch (&td, MINT_BGE_UN_I4, 2 + (gint8) td.ip [1]);
1191                         td.ip += 2;
1192                         break;
1193                 case CEE_BGT_UN:
1194                         two_arg_branch (&td, MINT_BGT_UN_I4, 5 + read32 (td.ip + 1));
1195                         td.ip += 5;
1196                         break;
1197                 case CEE_BGT_UN_S:
1198                         two_arg_branch (&td, MINT_BGT_UN_I4, 2 + (gint8) td.ip [1]);
1199                         td.ip += 2;
1200                         break;
1201                 case CEE_BLE_UN:
1202                         two_arg_branch (&td, MINT_BLE_UN_I4, 5 + read32 (td.ip + 1));
1203                         td.ip += 5;
1204                         break;
1205                 case CEE_BLE_UN_S:
1206                         two_arg_branch (&td, MINT_BLE_UN_I4, 2 + (gint8) td.ip [1]);
1207                         td.ip += 2;
1208                         break;
1209                 case CEE_BLT_UN:
1210                         two_arg_branch (&td, MINT_BLT_UN_I4, 5 + read32 (td.ip + 1));
1211                         td.ip += 5;
1212                         break;
1213                 case CEE_BLT_UN_S:
1214                         two_arg_branch (&td, MINT_BLT_UN_I4, 2 + (gint8) td.ip [1]);
1215                         td.ip += 2;
1216                         break;
1217                 case CEE_SWITCH: {
1218                         guint32 n;
1219                         const unsigned char *next_ip;
1220                         const unsigned char *base_ip = td.ip;
1221                         unsigned short *next_new_ip;
1222                         ++td.ip;
1223                         n = read32 (td.ip);
1224                         ADD_CODE(&td, MINT_SWITCH);
1225                         ADD_CODE(&td, * (unsigned short *)(&n));
1226                         ADD_CODE(&td, * ((unsigned short *)&n + 1));
1227                         td.ip += 4;
1228                         next_ip = td.ip + n * 4;
1229                         next_new_ip = td.new_ip + n * 2;
1230                         for (i = 0; i < n; i++) {
1231                                 offset = read32 (td.ip);
1232                                 target = next_ip - td.il_code + offset;
1233                                 if (offset < 0)
1234                                         target = td.in_offsets [target] - (next_new_ip - td.new_code);
1235                                 else {
1236                                         int prev = td.forward_refs [target];
1237                                         td.forward_refs [td.ip - td.il_code] = prev;
1238                                         td.forward_refs [target] = td.ip - td.il_code;
1239                                         td.in_offsets [td.ip - td.il_code] = - (base_ip - td.il_code);
1240                                 }
1241                                 ADD_CODE(&td, * (unsigned short *)(&target));
1242                                 ADD_CODE(&td, * ((unsigned short *)&target + 1));
1243                                 td.ip += 4;
1244                         }
1245                         --td.sp;
1246                         break;
1247                 }
1248                 case CEE_LDIND_I1:
1249                         CHECK_STACK (&td, 1);
1250                         SIMPLE_OP (td, MINT_LDIND_I1);
1251                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1252                         break;
1253                 case CEE_LDIND_U1:
1254                         CHECK_STACK (&td, 1);
1255                         SIMPLE_OP (td, MINT_LDIND_U1);
1256                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1257                         break;
1258                 case CEE_LDIND_I2:
1259                         CHECK_STACK (&td, 1);
1260                         SIMPLE_OP (td, MINT_LDIND_I2);
1261                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1262                         break;
1263                 case CEE_LDIND_U2:
1264                         CHECK_STACK (&td, 1);
1265                         SIMPLE_OP (td, MINT_LDIND_U2);
1266                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1267                         break;
1268                 case CEE_LDIND_I4:
1269                         CHECK_STACK (&td, 1);
1270                         SIMPLE_OP (td, MINT_LDIND_I4);
1271                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1272                         break;
1273                 case CEE_LDIND_U4:
1274                         CHECK_STACK (&td, 1);
1275                         SIMPLE_OP (td, MINT_LDIND_U4);
1276                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1277                         break;
1278                 case CEE_LDIND_I8:
1279                         CHECK_STACK (&td, 1);
1280                         SIMPLE_OP (td, MINT_LDIND_I8);
1281                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1282                         break;
1283                 case CEE_LDIND_I:
1284                         CHECK_STACK (&td, 1);
1285                         SIMPLE_OP (td, MINT_LDIND_I);
1286                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1287                         break;
1288                 case CEE_LDIND_R4:
1289                         CHECK_STACK (&td, 1);
1290                         SIMPLE_OP (td, MINT_LDIND_R4);
1291                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1292                         break;
1293                 case CEE_LDIND_R8:
1294                         CHECK_STACK (&td, 1);
1295                         SIMPLE_OP (td, MINT_LDIND_R8);
1296                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1297                         break;
1298                 case CEE_LDIND_REF:
1299                         CHECK_STACK (&td, 1);
1300                         SIMPLE_OP (td, MINT_LDIND_REF);
1301                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
1302                         break;
1303                 case CEE_STIND_REF:
1304                         CHECK_STACK (&td, 2);
1305                         SIMPLE_OP (td, MINT_STIND_REF);
1306                         td.sp -= 2;
1307                         break;
1308                 case CEE_STIND_I1:
1309                         CHECK_STACK (&td, 2);
1310                         SIMPLE_OP (td, MINT_STIND_I1);
1311                         td.sp -= 2;
1312                         break;
1313                 case CEE_STIND_I2:
1314                         CHECK_STACK (&td, 2);
1315                         SIMPLE_OP (td, MINT_STIND_I2);
1316                         td.sp -= 2;
1317                         break;
1318                 case CEE_STIND_I4:
1319                         CHECK_STACK (&td, 2);
1320                         SIMPLE_OP (td, MINT_STIND_I4);
1321                         td.sp -= 2;
1322                         break;
1323                 case CEE_STIND_I:
1324                         CHECK_STACK (&td, 2);
1325                         SIMPLE_OP (td, MINT_STIND_I);
1326                         td.sp -= 2;
1327                         break;
1328                 case CEE_STIND_I8:
1329                         CHECK_STACK (&td, 2);
1330                         SIMPLE_OP (td, MINT_STIND_I8);
1331                         td.sp -= 2;
1332                         break;
1333                 case CEE_STIND_R4:
1334                         CHECK_STACK (&td, 2);
1335                         SIMPLE_OP (td, MINT_STIND_R4);
1336                         td.sp -= 2;
1337                         break;
1338                 case CEE_STIND_R8:
1339                         CHECK_STACK (&td, 2);
1340                         SIMPLE_OP (td, MINT_STIND_R8);
1341                         td.sp -= 2;
1342                         break;
1343                 case CEE_ADD:
1344                         binary_arith_op(&td, MINT_ADD_I4);
1345                         ++td.ip;
1346                         break;
1347                 case CEE_SUB:
1348                         binary_arith_op(&td, MINT_SUB_I4);
1349                         ++td.ip;
1350                         break;
1351                 case CEE_MUL:
1352                         binary_arith_op(&td, MINT_MUL_I4);
1353                         ++td.ip;
1354                         break;
1355                 case CEE_DIV:
1356                         binary_arith_op(&td, MINT_DIV_I4);
1357                         ++td.ip;
1358                         break;
1359                 case CEE_DIV_UN:
1360                         binary_arith_op(&td, MINT_DIV_UN_I4);
1361                         ++td.ip;
1362                         break;
1363                 case CEE_REM:
1364                         binary_int_op (&td, MINT_REM_I4);
1365                         ++td.ip;
1366                         break;
1367                 case CEE_REM_UN:
1368                         binary_int_op (&td, MINT_REM_UN_I4);
1369                         ++td.ip;
1370                         break;
1371                 case CEE_AND:
1372                         binary_int_op (&td, MINT_AND_I4);
1373                         ++td.ip;
1374                         break;
1375                 case CEE_OR:
1376                         binary_int_op (&td, MINT_OR_I4);
1377                         ++td.ip;
1378                         break;
1379                 case CEE_XOR:
1380                         binary_int_op (&td, MINT_XOR_I4);
1381                         ++td.ip;
1382                         break;
1383                 case CEE_SHL:
1384                         shift_op (&td, MINT_SHL_I4);
1385                         ++td.ip;
1386                         break;
1387                 case CEE_SHR:
1388                         shift_op (&td, MINT_SHR_I4);
1389                         ++td.ip;
1390                         break;
1391                 case CEE_SHR_UN:
1392                         shift_op (&td, MINT_SHR_UN_I4);
1393                         ++td.ip;
1394                         break;
1395                 case CEE_NEG:
1396                         unary_arith_op (&td, MINT_NEG_I4);
1397                         ++td.ip;
1398                         break;
1399                 case CEE_NOT:
1400                         unary_arith_op (&td, MINT_NOT_I4);
1401                         ++td.ip;
1402                         break;
1403                 case CEE_CONV_U1:
1404                         CHECK_STACK (&td, 1);
1405                         switch (td.sp [-1].type) {
1406                         case STACK_TYPE_R8:
1407                                 ADD_CODE(&td, MINT_CONV_U1_R8);
1408                                 break;
1409                         case STACK_TYPE_I4:
1410                                 ADD_CODE(&td, MINT_CONV_U1_I4);
1411                                 break;
1412                         case STACK_TYPE_I8:
1413                                 ADD_CODE(&td, MINT_CONV_U1_I8);
1414                                 break;
1415                         default:
1416                                 g_assert_not_reached ();
1417                         }
1418                         ++td.ip;
1419                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1420                         break;
1421                 case CEE_CONV_I1:
1422                         CHECK_STACK (&td, 1);
1423                         switch (td.sp [-1].type) {
1424                         case STACK_TYPE_R8:
1425                                 ADD_CODE(&td, MINT_CONV_I1_R8);
1426                                 break;
1427                         case STACK_TYPE_I4:
1428                                 ADD_CODE(&td, MINT_CONV_I1_I4);
1429                                 break;
1430                         case STACK_TYPE_I8:
1431                                 ADD_CODE(&td, MINT_CONV_I1_I8);
1432                                 break;
1433                         default:
1434                                 g_assert_not_reached ();
1435                         }
1436                         ++td.ip;
1437                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1438                         break;
1439                 case CEE_CONV_U2:
1440                         CHECK_STACK (&td, 1);
1441                         switch (td.sp [-1].type) {
1442                         case STACK_TYPE_R8:
1443                                 ADD_CODE(&td, MINT_CONV_U2_R8);
1444                                 break;
1445                         case STACK_TYPE_I4:
1446                                 ADD_CODE(&td, MINT_CONV_U2_I4);
1447                                 break;
1448                         case STACK_TYPE_I8:
1449                                 ADD_CODE(&td, MINT_CONV_U2_I8);
1450                                 break;
1451                         default:
1452                                 g_assert_not_reached ();
1453                         }
1454                         ++td.ip;
1455                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1456                         break;
1457                 case CEE_CONV_I2:
1458                         CHECK_STACK (&td, 1);
1459                         switch (td.sp [-1].type) {
1460                         case STACK_TYPE_R8:
1461                                 ADD_CODE(&td, MINT_CONV_I2_R8);
1462                                 break;
1463                         case STACK_TYPE_I4:
1464                                 ADD_CODE(&td, MINT_CONV_I2_I4);
1465                                 break;
1466                         case STACK_TYPE_I8:
1467                                 ADD_CODE(&td, MINT_CONV_I2_I8);
1468                                 break;
1469                         default:
1470                                 g_assert_not_reached ();
1471                         }
1472                         ++td.ip;
1473                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1474                         break;
1475                 case CEE_CONV_U:
1476                         CHECK_STACK (&td, 1);
1477                         switch (td.sp [-1].type) {
1478                         case STACK_TYPE_R8:
1479 #if SIZEOF_VOID_P == 4
1480                                 ADD_CODE(&td, MINT_CONV_U4_R8);
1481 #else
1482                                 ADD_CODE(&td, MINT_CONV_U8_R8);
1483 #endif
1484                                 break;
1485                         case STACK_TYPE_I4:
1486 #if SIZEOF_VOID_P == 8
1487                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1488 #endif
1489                                 break;
1490                         case STACK_TYPE_I8:
1491 #if SIZEOF_VOID_P == 4
1492                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1493 #endif
1494                                 break;
1495                         default:
1496                                 g_assert_not_reached ();
1497                         }
1498                         ++td.ip;
1499                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1500                         break;
1501                 case CEE_CONV_I:
1502                         CHECK_STACK (&td, 1);
1503                         switch (td.sp [-1].type) {
1504                         case STACK_TYPE_R8:
1505 #if SIZEOF_VOID_P == 8
1506                                 ADD_CODE(&td, MINT_CONV_I8_R8);
1507 #else
1508                                 ADD_CODE(&td, MINT_CONV_I4_R8);
1509 #endif
1510                                 break;
1511                         case STACK_TYPE_I4:
1512 #if SIZEOF_VOID_P == 8
1513                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1514 #endif
1515                                 break;
1516                         case STACK_TYPE_O:
1517                                 break;
1518                         case STACK_TYPE_MP:
1519                                 break;
1520                         case STACK_TYPE_I8:
1521 #if SIZEOF_VOID_P == 4
1522                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1523 #endif
1524                                 break;
1525                         default:
1526                                 g_assert_not_reached ();
1527                         }
1528                         ++td.ip;
1529                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
1530                         break;
1531                 case CEE_CONV_U4:
1532                         CHECK_STACK (&td, 1);
1533                         switch (td.sp [-1].type) {
1534                         case STACK_TYPE_R8:
1535                                 ADD_CODE(&td, MINT_CONV_U4_R8);
1536                                 break;
1537                         case STACK_TYPE_I4:
1538                                 break;
1539                         case STACK_TYPE_I8:
1540                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1541                                 break;
1542                         case STACK_TYPE_MP:
1543 #if SIZEOF_VOID_P == 8
1544                                 ADD_CODE(&td, MINT_CONV_U4_I8);
1545 #endif
1546                                 break;
1547                         default:
1548                                 g_assert_not_reached ();
1549                         }
1550                         ++td.ip;
1551                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1552                         break;
1553                 case CEE_CONV_I4:
1554                         CHECK_STACK (&td, 1);
1555                         switch (td.sp [-1].type) {
1556                         case STACK_TYPE_R8:
1557                                 ADD_CODE(&td, MINT_CONV_I4_R8);
1558                                 break;
1559                         case STACK_TYPE_I4:
1560                                 break;
1561                         case STACK_TYPE_I8:
1562                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1563                                 break;
1564                         case STACK_TYPE_MP:
1565 #if SIZEOF_VOID_P == 8
1566                                 ADD_CODE(&td, MINT_CONV_I4_I8);
1567 #endif
1568                                 break;
1569                         default:
1570                                 g_assert_not_reached ();
1571                         }
1572                         ++td.ip;
1573                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
1574                         break;
1575                 case CEE_CONV_I8:
1576                         CHECK_STACK (&td, 1);
1577                         switch (td.sp [-1].type) {
1578                         case STACK_TYPE_R8:
1579                                 ADD_CODE(&td, MINT_CONV_I8_R8);
1580                                 break;
1581                         case STACK_TYPE_I4:
1582                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1583                                 break;
1584                         case STACK_TYPE_I8:
1585                                 break;
1586                         case STACK_TYPE_MP:
1587 #if SIZEOF_VOID_P == 4
1588                                 ADD_CODE(&td, MINT_CONV_I8_I4);
1589 #endif
1590                                 break;
1591                         default:
1592                                 g_assert_not_reached ();
1593                         }
1594                         ++td.ip;
1595                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1596                         break;
1597                 case CEE_CONV_R4:
1598                         CHECK_STACK (&td, 1);
1599                         switch (td.sp [-1].type) {
1600                         case STACK_TYPE_R8:
1601                                 ADD_CODE(&td, MINT_CONV_R4_R8);
1602                                 break;
1603                         case STACK_TYPE_I8:
1604                                 ADD_CODE(&td, MINT_CONV_R4_I8);
1605                                 break;
1606                         case STACK_TYPE_I4:
1607                                 ADD_CODE(&td, MINT_CONV_R4_I4);
1608                                 break;
1609                         default:
1610                                 g_assert_not_reached ();
1611                         }
1612                         ++td.ip;
1613                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1614                         break;
1615                 case CEE_CONV_R8:
1616                         CHECK_STACK (&td, 1);
1617                         switch (td.sp [-1].type) {
1618                         case STACK_TYPE_I4:
1619                                 ADD_CODE(&td, MINT_CONV_R8_I4);
1620                                 break;
1621                         case STACK_TYPE_I8:
1622                                 ADD_CODE(&td, MINT_CONV_R8_I8);
1623                                 break;
1624                         case STACK_TYPE_R8:
1625                                 break;
1626                         default:
1627                                 g_assert_not_reached ();
1628                         }
1629                         ++td.ip;
1630                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1631                         break;
1632                 case CEE_CONV_U8:
1633                         CHECK_STACK (&td, 1);
1634                         switch (td.sp [-1].type) {
1635                         case STACK_TYPE_I4:
1636                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1637                                 break;
1638                         case STACK_TYPE_I8:
1639                                 break;
1640                         case STACK_TYPE_R8:
1641                                 ADD_CODE(&td, MINT_CONV_U8_R8);
1642                                 break;
1643                         case STACK_TYPE_MP:
1644 #if SIZEOF_VOID_P == 4
1645                                 ADD_CODE(&td, MINT_CONV_U8_I4);
1646 #endif
1647                                 break;
1648                         default:
1649                                 g_assert_not_reached ();
1650                         }
1651                         ++td.ip;
1652                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1653                         break;
1654 #if 0
1655                 case CEE_CPOBJ: {
1656                         MonoClass *vtklass;
1657                         ++ip;
1658                         vtklass = mono_class_get_full (image, read32 (ip), generic_context);
1659                         ip += 4;
1660                         sp -= 2;
1661                         memcpy (sp [0].data.p, sp [1].data.p, mono_class_value_size (vtklass, NULL));
1662                         break;
1663                 }
1664 #endif
1665                 case CEE_LDOBJ: {
1666                         int size;
1667                         CHECK_STACK (&td, 1);
1668
1669                         token = read32 (td.ip + 1);
1670
1671                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1672                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1673                         else
1674                                 klass = mono_class_get_full (image, token, generic_context);
1675
1676                         ADD_CODE(&td, MINT_LDOBJ);
1677                         ADD_CODE(&td, get_data_item_index(&td, klass));
1678                         if (klass->byval_arg.type == MONO_TYPE_VALUETYPE && !klass->byval_arg.data.klass->enumtype) {
1679                                 size = mono_class_value_size (klass, NULL);
1680                                 PUSH_VT(&td, size);
1681                         }
1682                         td.ip += 5;
1683                         SET_TYPE(td.sp - 1, stack_type[mint_type(&klass->byval_arg)], klass);
1684                         break;
1685                 }
1686                 case CEE_LDSTR: {
1687                         MonoString *s;
1688                         token = mono_metadata_token_index (read32 (td.ip + 1));
1689                         td.ip += 5;
1690                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
1691                                 s = mono_string_new_wrapper(
1692                                         mono_method_get_wrapper_data (method, token));
1693                         }
1694                         else
1695                                 s = mono_ldstr (domain, image, token);
1696                         ADD_CODE(&td, MINT_LDSTR);
1697                         ADD_CODE(&td, get_data_item_index (&td, s));
1698                         PUSH_TYPE(&td, STACK_TYPE_O, mono_defaults.string_class);
1699                         break;
1700                 }
1701                 case CEE_NEWOBJ: {
1702                         MonoMethod *m;
1703                         MonoMethodSignature *csignature;
1704                         guint32 vt_stack_used = 0;
1705                         guint32 vt_res_size = 0;
1706
1707                         td.ip++;
1708                         token = read32 (td.ip);
1709                         td.ip += 4;
1710
1711                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1712                                 m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
1713                         else
1714                                 m = mono_get_method_full (image, token, NULL, generic_context);
1715
1716                         csignature = m->signature;
1717                         klass = m->klass;
1718                         td.sp -= csignature->param_count;
1719                         ADD_CODE(&td, MINT_NEWOBJ);
1720                         ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (m)));
1721                         if (klass->byval_arg.type == MONO_TYPE_VALUETYPE) {
1722                                 vt_res_size = mono_class_value_size (klass, NULL);
1723                                 PUSH_VT(&td, vt_res_size);
1724                         }
1725                         for (i = 0; i < csignature->param_count; ++i) {
1726                                 int mt = mint_type(csignature->params [i]);
1727                                 if (mt == MINT_TYPE_VT) {
1728                                         gint32 size = mono_class_value_size (csignature->params [i]->data.klass, NULL);
1729                                         size = (size + 7) & ~7;
1730                                         vt_stack_used += size;
1731                                 }
1732                         }
1733                         if (vt_stack_used != 0 || vt_res_size != 0) {
1734                                 ADD_CODE(&td, MINT_VTRESULT);
1735                                 ADD_CODE(&td, vt_res_size);
1736                                 WRITE32(&td, &vt_stack_used);
1737                                 td.vt_sp -= vt_stack_used;
1738                         }
1739                         PUSH_TYPE(&td, stack_type [mint_type (&klass->byval_arg)], klass);
1740                         break;
1741                 }
1742                 case CEE_CASTCLASS:
1743                         CHECK_STACK (&td, 1);
1744                         token = read32 (td.ip + 1);
1745                         klass = mono_class_get_full (image, token, generic_context);
1746                         ADD_CODE(&td, MINT_CASTCLASS);
1747                         ADD_CODE(&td, get_data_item_index (&td, klass));
1748                         td.sp [-1].klass = klass;
1749                         td.ip += 5;
1750                         break;
1751                 case CEE_ISINST:
1752                         CHECK_STACK (&td, 1);
1753                         token = read32 (td.ip + 1);
1754                         klass = mono_class_get_full (image, token, generic_context);
1755                         ADD_CODE(&td, MINT_ISINST);
1756                         ADD_CODE(&td, get_data_item_index (&td, klass));
1757                         td.ip += 5;
1758                         break;
1759                 case CEE_CONV_R_UN:
1760                         switch (td.sp [-1].type) {
1761                         case STACK_TYPE_R8:
1762                                 break;
1763                         case STACK_TYPE_I8:
1764                                 ADD_CODE(&td, MINT_CONV_R_UN_I8);
1765                                 break;
1766                         case STACK_TYPE_I4:
1767                                 ADD_CODE(&td, MINT_CONV_R_UN_I4);
1768                                 break;
1769                         default:
1770                                 g_assert_not_reached ();
1771                         }
1772                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
1773                         ++td.ip;
1774                         break;
1775                 case CEE_UNBOX:
1776                         CHECK_STACK (&td, 1);
1777                         token = read32 (td.ip + 1);
1778
1779                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1780                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1781                         else
1782                                 klass = mono_class_get_full (image, token, generic_context);
1783
1784                         ADD_CODE(&td, MINT_UNBOX);
1785                         ADD_CODE(&td, get_data_item_index (&td, klass));
1786                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
1787                         td.ip += 5;
1788                         break;
1789                 case CEE_THROW:
1790                         CHECK_STACK (&td, 1);
1791                         SIMPLE_OP (td, MINT_THROW);
1792                         --td.sp;
1793                         generating_code = 0;
1794                         break;
1795                 case CEE_LDFLDA:
1796                         CHECK_STACK (&td, 1);
1797                         token = read32 (td.ip + 1);
1798                         field = mono_field_from_token (image, token, &klass, generic_context);
1799                         mono_class_init (klass);
1800                         mt = mint_type(field->type);
1801                         ADD_CODE(&td, MINT_LDFLDA);
1802                         ADD_CODE(&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
1803                         td.ip += 5;
1804                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
1805                         break;
1806                 case CEE_LDFLD: {
1807                         CHECK_STACK (&td, 1);
1808                         token = read32 (td.ip + 1);
1809                         field = mono_field_from_token (image, token, &klass, generic_context);
1810                         mono_class_init (klass);
1811                         mt = mint_type(field->type);
1812                         if (klass->marshalbyref) {
1813                                 ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_LDRMFLD_VT :  MINT_LDRMFLD);
1814                                 ADD_CODE(&td, get_data_item_index (&td, field));
1815                         } else  {
1816                                 ADD_CODE(&td, MINT_LDFLD_I1 + mt - MINT_TYPE_I1);
1817                                 ADD_CODE(&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
1818                         }
1819                         klass = NULL;
1820                         if (mt == MINT_TYPE_VT) {
1821                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1822                                 PUSH_VT(&td, size);
1823                                 WRITE32(&td, &size);
1824                                 klass = field->type->data.klass;
1825                         } else if (mt == MINT_TYPE_O)
1826                                 klass = mono_class_from_mono_type (field->type);
1827                         td.ip += 5;
1828                         SET_TYPE(td.sp - 1, stack_type [mt], klass);
1829                         break;
1830                 }
1831                 case CEE_STFLD:
1832                         CHECK_STACK (&td, 2);
1833                         token = read32 (td.ip + 1);
1834                         field = mono_field_from_token (image, token, &klass, generic_context);
1835                         mono_class_init (klass);
1836                         mt = mint_type(field->type);
1837                         if (klass->marshalbyref) {
1838                                 ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_STRMFLD_VT : MINT_STRMFLD);
1839                                 ADD_CODE(&td, get_data_item_index (&td, field));
1840                         } else  {
1841                                 ADD_CODE(&td, MINT_STFLD_I1 + mt - MINT_TYPE_I1);
1842                                 ADD_CODE(&td, klass->valuetype ? field->offset - sizeof(MonoObject) : field->offset);
1843                         }
1844                         if (mt == MINT_TYPE_VT) {
1845                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1846                                 POP_VT(&td, size);
1847                                 WRITE32(&td, &size);
1848                         }
1849                         td.ip += 5;
1850                         td.sp -= 2;
1851                         break;
1852                 case CEE_LDSFLDA:
1853                         token = read32 (td.ip + 1);
1854                         field = mono_field_from_token (image, token, &klass, generic_context);
1855                         ADD_CODE(&td, MINT_LDSFLDA);
1856                         ADD_CODE(&td, get_data_item_index (&td, field));
1857                         td.ip += 5;
1858                         PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
1859                         break;
1860                 case CEE_LDSFLD:
1861                         token = read32 (td.ip + 1);
1862                         field = mono_field_from_token (image, token, &klass, generic_context);
1863                         mt = mint_type(field->type);
1864                         ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_LDSFLD_VT : MINT_LDSFLD);
1865                         ADD_CODE(&td, get_data_item_index (&td, field));
1866                         klass = NULL;
1867                         if (mt == MINT_TYPE_VT) {
1868                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1869                                 PUSH_VT(&td, size);
1870                                 WRITE32(&td, &size);
1871                                 klass = field->type->data.klass;
1872                         } else {
1873                                 if (mt == MINT_TYPE_O)
1874                                         klass = mono_class_from_mono_type (field->type);
1875                                 if (!domain->special_static_fields || !g_hash_table_lookup (domain->special_static_fields, field)) {
1876                                         if (mt == MINT_TYPE_O)
1877                                                 td.new_ip [-2] = MINT_LDSFLD_O;
1878                                         else if (mt == MINT_TYPE_I4)
1879                                                 td.new_ip [-2] = MINT_LDSFLD_I4;
1880                                 }
1881                                 ADD_CODE(&td, get_data_item_index (&td, mono_class_vtable (domain, field->parent)));
1882                         }
1883                         td.ip += 5;
1884                         PUSH_TYPE(&td, stack_type [mt], klass);
1885                         break;
1886                 case CEE_STSFLD:
1887                         CHECK_STACK (&td, 1);
1888                         token = read32 (td.ip + 1);
1889                         field = mono_field_from_token (image, token, &klass, generic_context);
1890                         mt = mint_type(field->type);
1891                         ADD_CODE(&td, mt == MINT_TYPE_VT ? MINT_STSFLD_VT : MINT_STSFLD);
1892                         ADD_CODE(&td, get_data_item_index (&td, field));
1893                         if (mt == MINT_TYPE_VT) {
1894                                 int size = mono_class_value_size (field->type->data.klass, NULL);
1895                                 POP_VT(&td, size);
1896                                 WRITE32(&td, &size);
1897                         }
1898                         td.ip += 5;
1899                         --td.sp;
1900                         break;
1901                 case CEE_STOBJ: {
1902                         int size;
1903                         token = read32 (td.ip + 1);
1904
1905                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1906                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1907                         else
1908                                 klass = mono_class_get_full (image, token, generic_context);
1909
1910                         ADD_CODE(&td, td.sp [-1].type == STACK_TYPE_VT ? MINT_STOBJ_VT : MINT_STOBJ);
1911                         ADD_CODE(&td, get_data_item_index (&td, klass));
1912                         if (td.sp [-1].type == STACK_TYPE_VT) {
1913                                 size = mono_class_value_size (klass, NULL);
1914                                 size = (size + 7) & ~7;
1915                                 td.vt_sp -= size;
1916                         }
1917                         td.ip += 5;
1918                         td.sp -= 2;
1919                         break;
1920                 }
1921                 case CEE_CONV_OVF_I_UN:
1922                         CHECK_STACK (&td, 1);
1923                         switch (td.sp [-1].type) {
1924                         case STACK_TYPE_R8:
1925 #if SIZEOF_VOID_P == 8
1926                                 ADD_CODE(&td, MINT_CONV_OVF_I8_UN_R8);
1927 #else
1928                                 ADD_CODE(&td, MINT_CONV_OVF_I4_UN_R8);
1929 #endif
1930                                 break;
1931                         case STACK_TYPE_I8:
1932                                 /*FIX*/
1933                                 break;
1934                         case STACK_TYPE_I4:
1935 #if SIZEOF_VOID_P == 8
1936                                 ADD_CODE(&td, MINT_CONV_I8_U4);
1937 #endif
1938                                 break;
1939                         default:
1940                                 g_assert_not_reached ();
1941                                 break;
1942                         }
1943                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1944                         ++td.ip;
1945                         break;
1946                 case CEE_CONV_OVF_I8_UN:
1947                         CHECK_STACK (&td, 1);
1948                         switch (td.sp [-1].type) {
1949                         case STACK_TYPE_R8:
1950                                 ADD_CODE(&td, MINT_CONV_OVF_I8_UN_R8);
1951                                 break;
1952                         case STACK_TYPE_I8:
1953                                 break;
1954                         case STACK_TYPE_I4:
1955                                 ADD_CODE(&td, MINT_CONV_I8_U4);
1956                                 break;
1957                         default:
1958                                 g_assert_not_reached ();
1959                                 break;
1960                         }
1961                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
1962                         ++td.ip;
1963                         break;
1964                 case CEE_BOX: {
1965                         int size;
1966                         CHECK_STACK (&td, 1);
1967                         token = read32 (td.ip + 1);
1968                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1969                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1970                         else
1971                                 klass = mono_class_get_full (image, token, generic_context);
1972                         g_assert (klass->valuetype);
1973                         if (klass->byval_arg.type == MONO_TYPE_VALUETYPE && !klass->enumtype) {
1974                                 size = mono_class_value_size (klass, NULL);
1975                                 size = (size + 7) & ~7;
1976                                 td.vt_sp -= size;
1977                         }
1978                         ADD_CODE(&td, MINT_BOX);
1979                         ADD_CODE(&td, get_data_item_index (&td, klass));
1980                         SET_TYPE(td.sp - 1, STACK_TYPE_O, klass);
1981                         td.ip += 5;
1982                         break;
1983                 }
1984                 case CEE_NEWARR:
1985                         CHECK_STACK (&td, 1);
1986                         token = read32 (td.ip + 1);
1987
1988                         if (method->wrapper_type != MONO_WRAPPER_NONE)
1989                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
1990                         else
1991                                 klass = mono_class_get_full (image, token, generic_context);
1992
1993                         ADD_CODE(&td, MINT_NEWARR);
1994                         ADD_CODE(&td, get_data_item_index (&td, klass));
1995                         SET_TYPE(td.sp - 1, STACK_TYPE_O, klass);
1996                         td.ip += 5;
1997                         break;
1998                 case CEE_LDLEN:
1999                         CHECK_STACK (&td, 1);
2000                         SIMPLE_OP (td, MINT_LDLEN);
2001                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2002                         break;
2003                 case CEE_LDELEMA:
2004                         CHECK_STACK (&td, 2);
2005                         ENSURE_I4 (&td, 1);
2006                         token = read32 (td.ip + 1);
2007
2008                         if (method->wrapper_type != MONO_WRAPPER_NONE)
2009                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2010                         else
2011                                 klass = mono_class_get_full (image, token, generic_context);
2012
2013                         ADD_CODE(&td, MINT_LDELEMA);
2014                         ADD_CODE(&td, get_data_item_index (&td, klass));
2015                         td.ip += 5;
2016                         --td.sp;
2017                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2018                         break;
2019                 case CEE_LDELEM_I1:
2020                         CHECK_STACK (&td, 2);
2021                         ENSURE_I4 (&td, 1);
2022                         SIMPLE_OP (td, MINT_LDELEM_I1);
2023                         --td.sp;
2024                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2025                         break;
2026                 case CEE_LDELEM_U1:
2027                         CHECK_STACK (&td, 2);
2028                         ENSURE_I4 (&td, 1);
2029                         SIMPLE_OP (td, MINT_LDELEM_U1);
2030                         --td.sp;
2031                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2032                         break;
2033                 case CEE_LDELEM_I2:
2034                         CHECK_STACK (&td, 2);
2035                         ENSURE_I4 (&td, 1);
2036                         SIMPLE_OP (td, MINT_LDELEM_I2);
2037                         --td.sp;
2038                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2039                         break;
2040                 case CEE_LDELEM_U2:
2041                         CHECK_STACK (&td, 2);
2042                         ENSURE_I4 (&td, 1);
2043                         SIMPLE_OP (td, MINT_LDELEM_U2);
2044                         --td.sp;
2045                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2046                         break;
2047                 case CEE_LDELEM_I4:
2048                         CHECK_STACK (&td, 2);
2049                         ENSURE_I4 (&td, 1);
2050                         SIMPLE_OP (td, MINT_LDELEM_I4);
2051                         --td.sp;
2052                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2053                         break;
2054                 case CEE_LDELEM_U4:
2055                         CHECK_STACK (&td, 2);
2056                         ENSURE_I4 (&td, 1);
2057                         SIMPLE_OP (td, MINT_LDELEM_U4);
2058                         --td.sp;
2059                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2060                         break;
2061                 case CEE_LDELEM_I8:
2062                         CHECK_STACK (&td, 2);
2063                         ENSURE_I4 (&td, 1);
2064                         SIMPLE_OP (td, MINT_LDELEM_I8);
2065                         --td.sp;
2066                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2067                         break;
2068                 case CEE_LDELEM_I:
2069                         CHECK_STACK (&td, 2);
2070                         ENSURE_I4 (&td, 1);
2071                         SIMPLE_OP (td, MINT_LDELEM_I);
2072                         --td.sp;
2073                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2074                         break;
2075                 case CEE_LDELEM_R4:
2076                         CHECK_STACK (&td, 2);
2077                         ENSURE_I4 (&td, 1);
2078                         SIMPLE_OP (td, MINT_LDELEM_R4);
2079                         --td.sp;
2080                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2081                         break;
2082                 case CEE_LDELEM_R8:
2083                         CHECK_STACK (&td, 2);
2084                         ENSURE_I4 (&td, 1);
2085                         SIMPLE_OP (td, MINT_LDELEM_R8);
2086                         --td.sp;
2087                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_R8);
2088                         break;
2089                 case CEE_LDELEM_REF:
2090                         CHECK_STACK (&td, 2);
2091                         ENSURE_I4 (&td, 1);
2092                         SIMPLE_OP (td, MINT_LDELEM_REF);
2093                         --td.sp;
2094                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_O);
2095                         break;
2096                 case CEE_STELEM_I:
2097                         CHECK_STACK (&td, 3);
2098                         ENSURE_I4 (&td, 2);
2099                         SIMPLE_OP (td, MINT_STELEM_I);
2100                         td.sp -= 3;
2101                         break;
2102                 case CEE_STELEM_I1:
2103                         CHECK_STACK (&td, 3);
2104                         ENSURE_I4 (&td, 2);
2105                         SIMPLE_OP (td, MINT_STELEM_I1);
2106                         td.sp -= 3;
2107                         break;
2108                 case CEE_STELEM_I2:
2109                         CHECK_STACK (&td, 3);
2110                         ENSURE_I4 (&td, 2);
2111                         SIMPLE_OP (td, MINT_STELEM_I2);
2112                         td.sp -= 3;
2113                         break;
2114                 case CEE_STELEM_I4:
2115                         CHECK_STACK (&td, 3);
2116                         ENSURE_I4 (&td, 2);
2117                         SIMPLE_OP (td, MINT_STELEM_I4);
2118                         td.sp -= 3;
2119                         break;
2120                 case CEE_STELEM_I8:
2121                         CHECK_STACK (&td, 3);
2122                         ENSURE_I4 (&td, 2);
2123                         SIMPLE_OP (td, MINT_STELEM_I8);
2124                         td.sp -= 3;
2125                         break;
2126                 case CEE_STELEM_R4:
2127                         CHECK_STACK (&td, 3);
2128                         ENSURE_I4 (&td, 2);
2129                         SIMPLE_OP (td, MINT_STELEM_R4);
2130                         td.sp -= 3;
2131                         break;
2132                 case CEE_STELEM_R8:
2133                         CHECK_STACK (&td, 3);
2134                         ENSURE_I4 (&td, 2);
2135                         SIMPLE_OP (td, MINT_STELEM_R8);
2136                         td.sp -= 3;
2137                         break;
2138                 case CEE_STELEM_REF:
2139                         CHECK_STACK (&td, 3);
2140                         ENSURE_I4 (&td, 2);
2141                         SIMPLE_OP (td, MINT_STELEM_REF);
2142                         td.sp -= 3;
2143                         break;
2144 #if 0
2145                 case CEE_LDELEM:
2146                 case CEE_STELEM:
2147                 case CEE_UNBOX_ANY:
2148
2149                 case CEE_CONV_OVF_U1:
2150
2151                 case CEE_CONV_OVF_I8:
2152
2153 #if SIZEOF_VOID_P == 8
2154                 case CEE_CONV_OVF_U:
2155 #endif
2156                 case CEE_REFANYVAL: ves_abort(); break;
2157 #endif
2158                 case CEE_CKFINITE:
2159                         CHECK_STACK (&td, 1);
2160                         SIMPLE_OP (td, MINT_CKFINITE);
2161                         break;
2162                 case CEE_CONV_OVF_I1:
2163                 case CEE_CONV_OVF_I1_UN:
2164                         CHECK_STACK (&td, 1);
2165                         switch (td.sp [-1].type) {
2166                         case STACK_TYPE_R8:
2167                                 ADD_CODE(&td, MINT_CONV_OVF_I1_R8);
2168                                 break;
2169                         case STACK_TYPE_I4:
2170                                 ADD_CODE(&td, MINT_CONV_OVF_I1_I4);
2171                                 break;
2172                         case STACK_TYPE_I8:
2173                                 ADD_CODE(&td, MINT_CONV_OVF_I1_I8);
2174                                 break;
2175                         default:
2176                                 g_assert_not_reached ();
2177                         }
2178                         ++td.ip;
2179                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2180                         break;
2181                 case CEE_CONV_OVF_U1:
2182                 case CEE_CONV_OVF_U1_UN:
2183                         CHECK_STACK (&td, 1);
2184                         switch (td.sp [-1].type) {
2185                         case STACK_TYPE_R8:
2186                                 ADD_CODE(&td, MINT_CONV_OVF_U1_R8);
2187                                 break;
2188                         case STACK_TYPE_I4:
2189                                 ADD_CODE(&td, MINT_CONV_OVF_U1_I4);
2190                                 break;
2191                         case STACK_TYPE_I8:
2192                                 ADD_CODE(&td, MINT_CONV_OVF_U1_I8);
2193                                 break;
2194                         default:
2195                                 g_assert_not_reached ();
2196                         }
2197                         ++td.ip;
2198                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2199                         break;
2200                 case CEE_CONV_OVF_I2:
2201                 case CEE_CONV_OVF_I2_UN:
2202                         CHECK_STACK (&td, 1);
2203                         switch (td.sp [-1].type) {
2204                         case STACK_TYPE_R8:
2205                                 ADD_CODE(&td, MINT_CONV_OVF_I2_R8);
2206                                 break;
2207                         case STACK_TYPE_I4:
2208                                 ADD_CODE(&td, MINT_CONV_OVF_I2_I4);
2209                                 break;
2210                         case STACK_TYPE_I8:
2211                                 ADD_CODE(&td, MINT_CONV_OVF_I2_I8);
2212                                 break;
2213                         default:
2214                                 g_assert_not_reached ();
2215                         }
2216                         ++td.ip;
2217                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2218                         break;
2219                 case CEE_CONV_OVF_U2_UN:
2220                 case CEE_CONV_OVF_U2:
2221                         CHECK_STACK (&td, 1);
2222                         switch (td.sp [-1].type) {
2223                         case STACK_TYPE_R8:
2224                                 ADD_CODE(&td, MINT_CONV_OVF_U2_R8);
2225                                 break;
2226                         case STACK_TYPE_I4:
2227                                 ADD_CODE(&td, MINT_CONV_OVF_U2_I4);
2228                                 break;
2229                         case STACK_TYPE_I8:
2230                                 ADD_CODE(&td, MINT_CONV_OVF_U2_I8);
2231                                 break;
2232                         default:
2233                                 g_assert_not_reached ();
2234                         }
2235                         ++td.ip;
2236                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2237                         break;
2238 #if SIZEOF_VOID_P == 4
2239                 case CEE_CONV_OVF_I:
2240 #endif
2241                 case CEE_CONV_OVF_I4:
2242                 case CEE_CONV_OVF_I4_UN:
2243                         CHECK_STACK (&td, 1);
2244                         switch (td.sp [-1].type) {
2245                         case STACK_TYPE_R8:
2246                                 ADD_CODE(&td, MINT_CONV_OVF_I4_R8);
2247                                 break;
2248                         case STACK_TYPE_I4:
2249                                 if (*td.ip == CEE_CONV_OVF_I4_UN)
2250                                         ADD_CODE(&td, MINT_CONV_OVF_I4_U4);
2251                                 break;
2252                         case STACK_TYPE_I8:
2253                                 ADD_CODE(&td, MINT_CONV_OVF_I4_I8);
2254                                 break;
2255                         default:
2256                                 g_assert_not_reached ();
2257                         }
2258                         ++td.ip;
2259                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2260                         break;
2261 #if SIZEOF_VOID_P == 4
2262                 case CEE_CONV_OVF_U:
2263 #endif
2264                 case CEE_CONV_OVF_U4:
2265                 case CEE_CONV_OVF_U4_UN:
2266                         CHECK_STACK (&td, 1);
2267                         switch (td.sp [-1].type) {
2268                         case STACK_TYPE_R8:
2269                                 ADD_CODE(&td, MINT_CONV_OVF_U4_R8);
2270                                 break;
2271                         case STACK_TYPE_I4:
2272                                 if (*td.ip != CEE_CONV_OVF_U4_UN)
2273                                         ADD_CODE(&td, MINT_CONV_OVF_U4_I4);
2274                                 break;
2275                         case STACK_TYPE_I8:
2276                                 ADD_CODE(&td, MINT_CONV_OVF_U4_I8);
2277                                 break;
2278                         default:
2279                                 g_assert_not_reached ();
2280                         }
2281                         ++td.ip;
2282                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2283                         break;
2284 #if SIZEOF_VOID_P == 8
2285                 case CEE_CONV_OVF_I:
2286 #endif
2287                 case CEE_CONV_OVF_I8:
2288                         CHECK_STACK (&td, 1);
2289                         switch (td.sp [-1].type) {
2290                         case STACK_TYPE_R8:
2291                                 ADD_CODE(&td, MINT_CONV_OVF_I8_R8);
2292                                 break;
2293                         case STACK_TYPE_I4:
2294                                 ADD_CODE(&td, MINT_CONV_I8_I4);
2295                                 break;
2296                         case STACK_TYPE_I8:
2297                                 break;
2298                         default:
2299                                 g_assert_not_reached ();
2300                         }
2301                         ++td.ip;
2302                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2303                         break;
2304 #if SIZEOF_VOID_P == 8
2305                 case CEE_CONV_OVF_U:
2306 #endif
2307                 case CEE_CONV_OVF_U8:
2308                         CHECK_STACK (&td, 1);
2309                         switch (td.sp [-1].type) {
2310                         case STACK_TYPE_R8:
2311                                 ADD_CODE(&td, MINT_CONV_OVF_U8_R8);
2312                                 break;
2313                         case STACK_TYPE_I4:
2314                                 ADD_CODE(&td, MINT_CONV_OVF_U8_I4);
2315                                 break;
2316                         case STACK_TYPE_I8:
2317                                 break;
2318                         default:
2319                                 g_assert_not_reached ();
2320                         }
2321                         ++td.ip;
2322                         SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I8);
2323                         break;
2324                 case CEE_LDTOKEN: {
2325                         int size;
2326                         gpointer handle;
2327                         token = read32 (td.ip + 1);
2328                         handle = mono_ldtoken (image, token, &klass, generic_context);
2329                         mt = mint_type(&klass->byval_arg);
2330                         g_assert (mt == MINT_TYPE_VT);
2331                         size = mono_class_value_size (klass, NULL);
2332                         g_assert (size == sizeof(gpointer));
2333                         PUSH_VT(&td, sizeof(gpointer));
2334                         ADD_CODE(&td, MINT_LDTOKEN);
2335                         ADD_CODE(&td, get_data_item_index (&td, handle));
2336                         PUSH_SIMPLE_TYPE(&td, stack_type [mt]);
2337                         td.ip += 5;
2338                         break;
2339                 }
2340                 case CEE_ADD_OVF:
2341                         binary_arith_op(&td, MINT_ADD_OVF_I4);
2342                         ++td.ip;
2343                         break;
2344                 case CEE_ADD_OVF_UN:
2345                         binary_arith_op(&td, MINT_ADD_OVF_UN_I4);
2346                         ++td.ip;
2347                         break;
2348                 case CEE_MUL_OVF:
2349                         binary_arith_op(&td, MINT_MUL_OVF_I4);
2350                         ++td.ip;
2351                         break;
2352                 case CEE_MUL_OVF_UN:
2353                         binary_arith_op(&td, MINT_MUL_OVF_UN_I4);
2354                         ++td.ip;
2355                         break;
2356                 case CEE_SUB_OVF:
2357                         binary_arith_op(&td, MINT_SUB_OVF_I4);
2358                         ++td.ip;
2359                         break;
2360                 case CEE_SUB_OVF_UN:
2361                         binary_arith_op(&td, MINT_SUB_OVF_UN_I4);
2362                         ++td.ip;
2363                         break;
2364                 case CEE_ENDFINALLY:
2365                         SIMPLE_OP (td, MINT_ENDFINALLY);
2366                         generating_code = 0;
2367                         break;
2368                 case CEE_LEAVE:
2369                         td.sp = td.stack;
2370                         handle_branch (&td, MINT_LEAVE_S, MINT_LEAVE, 5 + read32 (td.ip + 1));
2371                         td.ip += 5;
2372                         generating_code = 0;
2373                         break;
2374                 case CEE_LEAVE_S:
2375                         td.sp = td.stack;
2376                         handle_branch (&td, MINT_LEAVE_S, MINT_LEAVE, 2 + (gint8)td.ip [1]);
2377                         td.ip += 2;
2378                         generating_code = 0;
2379                         break;
2380                 case CEE_UNUSED41:
2381                         ++td.ip;
2382                         switch (*td.ip) {
2383                         case CEE_MONO_FUNC1:
2384                                 ADD_CODE(&td, MINT_MONO_CONV1);
2385                                 ADD_CODE(&td, *(td.ip + 1));
2386                                 td.ip += 2;
2387                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I);
2388                                 break;
2389                         case CEE_MONO_PROC2:
2390                                 CHECK_STACK (&td, 2);
2391                                 ADD_CODE(&td, MINT_MONO_CONV2);
2392                                 ADD_CODE(&td, *(td.ip + 1));
2393                                 td.ip += 2;
2394                                 td.sp -= 2;
2395                                 break;
2396                         case CEE_MONO_PROC3:
2397                                 CHECK_STACK (&td, 3);
2398                                 ADD_CODE(&td, MINT_MONO_CONV3);
2399                                 ADD_CODE(&td, *(td.ip + 1));
2400                                 td.ip += 2;
2401                                 td.sp -= 3;
2402                                 break;
2403                         case CEE_MONO_VTADDR: {
2404                                 int size;
2405                                 CHECK_STACK (&td, 1);
2406                                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE)
2407                                         size = mono_class_native_size(td.sp [-1].klass, NULL);
2408                                 else
2409                                         size = mono_class_value_size(td.sp [-1].klass, NULL);
2410                                 size = (size + 7) & ~7;
2411                                 ADD_CODE(&td, MINT_VTRESULT);
2412                                 ADD_CODE(&td, 0);
2413                                 WRITE32(&td, &size);
2414                                 td.vt_sp -= size;
2415                                 ++td.ip;
2416                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2417                                 break;
2418                         }
2419                         case CEE_MONO_LDPTR:
2420                                 token = read32 (td.ip + 1);
2421                                 td.ip += 5;
2422                                 ADD_CODE(&td, MINT_MONO_LDPTR);
2423                                 ADD_CODE(&td, get_data_item_index (&td, mono_method_get_wrapper_data (method, token)));
2424                                 td.sp [0].type = STACK_TYPE_I;
2425                                 ++td.sp;
2426                                 break;
2427                         case CEE_MONO_FREE:
2428                                 CHECK_STACK (&td, 1);
2429                                 ADD_CODE(&td, MINT_MONO_FREE);
2430                                 ++td.ip;
2431                                 --td.sp;
2432                                 break;
2433                         case CEE_MONO_OBJADDR:
2434                                 CHECK_STACK (&td, 1);
2435                                 ++td.ip;
2436                                 td.sp[-1].type = STACK_TYPE_MP;
2437                                 /* do nothing? */
2438                                 break;
2439                         case CEE_MONO_NEWOBJ:
2440                                 token = read32 (td.ip + 1);
2441                                 td.ip += 5;
2442                                 ADD_CODE(&td, MINT_MONO_NEWOBJ);
2443                                 ADD_CODE(&td, get_data_item_index (&td, mono_method_get_wrapper_data (method, token)));
2444                                 td.sp [0].type = STACK_TYPE_O;
2445                                 ++td.sp;
2446                                 break;
2447                         case CEE_MONO_RETOBJ:
2448                                 CHECK_STACK (&td, 1);
2449                                 token = read32 (td.ip + 1);
2450                                 td.ip += 5;
2451                                 ADD_CODE(&td, MINT_MONO_RETOBJ);
2452                                 td.sp--;
2453
2454                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2455
2456                                 /*stackval_from_data (signature->ret, frame->retval, sp->data.vt, signature->pinvoke);*/
2457
2458                                 if (td.sp > td.stack)
2459                                         g_warning ("CEE_MONO_RETOBJ: more values on stack: %d", td.sp-td.stack);
2460                                 break;
2461                         case CEE_MONO_LDNATIVEOBJ:
2462                                 token = read32 (td.ip + 1);
2463                                 td.ip += 5;
2464                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
2465                                 g_assert(klass->valuetype);
2466                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2467                                 break;
2468                         case CEE_MONO_SAVE_LMF:
2469                         case CEE_MONO_RESTORE_LMF:
2470                                 ++td.ip;
2471                                 break;
2472                         default:
2473                                 g_error ("transform.c: Unimplemented opcode: 0xF0 %02x at 0x%x\n", *td.ip, td.ip-header->code);
2474                         }
2475                         break;
2476 #if 0
2477                 case CEE_PREFIX7:
2478                 case CEE_PREFIX6:
2479                 case CEE_PREFIX5:
2480                 case CEE_PREFIX4:
2481                 case CEE_PREFIX3:
2482                 case CEE_PREFIX2:
2483                 case CEE_PREFIXREF: ves_abort(); break;
2484 #endif
2485                 /*
2486                  * Note: Exceptions thrown when executing a prefixed opcode need
2487                  * to take into account the number of prefix bytes (usually the
2488                  * throw point is just (ip - n_prefix_bytes).
2489                  */
2490                 case CEE_PREFIX1:
2491                         ++td.ip;
2492                         switch (*td.ip) {
2493 #if 0
2494                         case CEE_ARGLIST: ves_abort(); break;
2495 #endif
2496                         case CEE_CEQ:
2497                                 CHECK_STACK(&td, 2);
2498                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2499                                         ADD_CODE(&td, MINT_CEQ_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2500                                 else
2501                                         ADD_CODE(&td, MINT_CEQ_I4 + td.sp [-1].type - STACK_TYPE_I4);
2502                                 --td.sp;
2503                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2504                                 ++td.ip;
2505                                 break;
2506                         case CEE_CGT:
2507                                 CHECK_STACK(&td, 2);
2508                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2509                                         ADD_CODE(&td, MINT_CGT_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2510                                 else
2511                                         ADD_CODE(&td, MINT_CGT_I4 + td.sp [-1].type - STACK_TYPE_I4);
2512                                 --td.sp;
2513                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2514                                 ++td.ip;
2515                                 break;
2516                         case CEE_CGT_UN:
2517                                 CHECK_STACK(&td, 2);
2518                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2519                                         ADD_CODE(&td, MINT_CGT_UN_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2520                                 else
2521                                         ADD_CODE(&td, MINT_CGT_UN_I4 + td.sp [-1].type - STACK_TYPE_I4);
2522                                 --td.sp;
2523                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2524                                 ++td.ip;
2525                                 break;
2526                         case CEE_CLT:
2527                                 CHECK_STACK(&td, 2);
2528                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2529                                         ADD_CODE(&td, MINT_CLT_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2530                                 else
2531                                         ADD_CODE(&td, MINT_CLT_I4 + td.sp [-1].type - STACK_TYPE_I4);
2532                                 --td.sp;
2533                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2534                                 ++td.ip;
2535                                 break;
2536                         case CEE_CLT_UN:
2537                                 CHECK_STACK(&td, 2);
2538                                 if (td.sp [-1].type == STACK_TYPE_O || td.sp [-1].type == STACK_TYPE_MP)
2539                                         ADD_CODE(&td, MINT_CLT_UN_I4 + STACK_TYPE_I - STACK_TYPE_I4);
2540                                 else
2541                                         ADD_CODE(&td, MINT_CLT_UN_I4 + td.sp [-1].type - STACK_TYPE_I4);
2542                                 --td.sp;
2543                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_I4);
2544                                 ++td.ip;
2545                                 break;
2546                         case CEE_LDVIRTFTN: /* fallthrough */
2547                         case CEE_LDFTN: {
2548                                 MonoMethod *m;
2549                                 if (*td.ip == CEE_LDVIRTFTN) {
2550                                         CHECK_STACK (&td, 1);
2551                                         --td.sp;
2552                                 }
2553                                 token = read32 (td.ip + 1);
2554                                 if (method->wrapper_type != MONO_WRAPPER_NONE)
2555                                         m = (MonoMethod *)mono_method_get_wrapper_data (method, token);
2556                                 else
2557                                         m = mono_get_method_full (image, token, NULL, generic_context);
2558
2559                                 if (method->wrapper_type == MONO_WRAPPER_NONE && m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
2560                                         m = mono_marshal_get_synchronized_wrapper (m);
2561
2562                                 ADD_CODE(&td, *td.ip == CEE_LDFTN ? MINT_LDFTN : MINT_LDVIRTFTN);
2563                                 ADD_CODE(&td, get_data_item_index (&td, mono_interp_get_runtime_method (m)));
2564                                 td.ip += 5;
2565                                 PUSH_SIMPLE_TYPE (&td, STACK_TYPE_F);
2566                                 break;
2567                         }
2568                         case CEE_LDARG:
2569                                 load_arg (&td, read16 (td.ip + 1));
2570                                 td.ip += 3;
2571                                 break;
2572                         case CEE_LDARGA: {
2573                                 int n = read16 (td.ip + 1);
2574                                 if (n == 0 && signature->hasthis)
2575                                         ADD_CODE(&td, MINT_LDTHISA);
2576                                 else {
2577                                         ADD_CODE(&td, MINT_LDARGA);
2578                                         ADD_CODE(&td, td.rtm->arg_offsets [n - signature->hasthis]); /* FIX for large offsets */
2579                                 }
2580                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
2581                                 td.ip += 3;
2582                                 break;
2583                         }
2584                         case CEE_STARG:
2585                                 store_arg (&td, read16 (td.ip + 1));
2586                                 td.ip += 3;
2587                                 break;
2588                         case CEE_LDLOC:
2589                                 load_local (&td, read16 (td.ip + 1));
2590                                 td.ip += 3;
2591                                 break;
2592                         case CEE_LDLOCA:
2593                                 ADD_CODE(&td, MINT_LDLOCA_S);
2594                                 ADD_CODE(&td, td.rtm->local_offsets [read16 (td.ip + 1)]);
2595                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_MP);
2596                                 td.ip += 3;
2597                                 break;
2598                         case CEE_STLOC:
2599                                 store_local (&td, read16 (td.ip + 1));
2600                                 td.ip += 3;
2601                                 break;
2602                         case CEE_LOCALLOC:
2603                                 CHECK_STACK (&td, 1);
2604 #if SIZEOF_VOID_P == 8
2605                                 if (td.sp [-1].type == STACK_TYPE_I8)
2606                                         ADD_CODE(&td, MINT_CONV_I4_I8);
2607 #endif
2608                                 ADD_CODE(&td, MINT_LOCALLOC);
2609                                 if (td.sp != td.stack + 1)
2610                                         g_warning("CEE_LOCALLOC: stack not empty");
2611                                 ++td.ip;
2612                                 SET_SIMPLE_TYPE(td.sp - 1, STACK_TYPE_MP);
2613                                 break;
2614 #if 0
2615                         case CEE_UNUSED57: ves_abort(); break;
2616                         case CEE_ENDFILTER: ves_abort(); break;
2617 #endif
2618                         case CEE_UNALIGNED_:
2619                                 ++td.ip;
2620                                 /* FIX: should do something? */;
2621                                 break;
2622                         case CEE_VOLATILE_:
2623                                 ++td.ip;
2624                                 /* FIX: should do something? */;
2625                                 break;
2626                         case CEE_TAIL_:
2627                                 ++td.ip;
2628                                 /* FIX: should do something? */;
2629                                 break;
2630                         case CEE_INITOBJ:
2631                                 CHECK_STACK(&td, 1);
2632                                 token = read32 (td.ip + 1);
2633                                 klass = mono_class_get_full (image, token, generic_context);
2634                                 ADD_CODE(&td, MINT_INITOBJ);
2635                                 i32 = mono_class_value_size (klass, NULL);
2636                                 WRITE32(&td, &i32);
2637                                 td.ip += 5;
2638                                 --td.sp;
2639                                 break;
2640                         case CEE_CPBLK:
2641                                 CHECK_STACK(&td, 3);
2642                                 /* FIX? convert length to I8? */
2643                                 ADD_CODE(&td, MINT_CPBLK);
2644                                 td.sp -= 3;
2645                                 ++td.ip;
2646                                 break;
2647 #if 0
2648                         case CEE_CONSTRAINED_: {
2649                                 guint32 token;
2650                                 /* FIXME: implement */
2651                                 ++ip;
2652                                 token = read32 (ip);
2653                                 ip += 4;
2654                                 break;
2655                         }
2656 #endif
2657                         case CEE_INITBLK:
2658                                 CHECK_STACK(&td, 3);
2659                                 ADD_CODE(&td, MINT_INITBLK);
2660                                 td.sp -= 3;
2661                                 break;
2662 #if 0
2663                         case CEE_NO_:
2664                                 /* FIXME: implement */
2665                                 ip += 2;
2666                                 break;
2667 #endif
2668                         case CEE_RETHROW:
2669                                 SIMPLE_OP (td, MINT_RETHROW);
2670                                 generating_code = 0;
2671                                 break;
2672                         case CEE_SIZEOF: {
2673                                 guint32 align;
2674                                 gint32 size;
2675                                 token = read32 (td.ip + 1);
2676                                 td.ip += 5;
2677                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC) {
2678                                         MonoType *type = mono_type_create_from_typespec (image, token);
2679                                         size = mono_type_size (type, &align);
2680                                 } else {
2681                                         MonoClass *szclass = mono_class_get_full (image, token, generic_context);
2682                                         mono_class_init (szclass);
2683 #if 0
2684                                         if (!szclass->valuetype)
2685                                                 THROW_EX (mono_exception_from_name (mono_defaults.corlib, "System", "InvalidProgramException"), ip - 5);
2686 #endif
2687                                         size = mono_class_value_size (szclass, &align);
2688                                 }
2689                                 ADD_CODE(&td, MINT_LDC_I4);
2690                                 WRITE32(&td, &size);
2691                                 PUSH_SIMPLE_TYPE(&td, STACK_TYPE_I4);
2692                                 break;
2693                         }
2694 #if 0
2695                         case CEE_REFANYTYPE: ves_abort(); break;
2696 #endif
2697                         default:
2698                                 g_error ("transform.c: Unimplemented opcode: 0xFE %02x at 0x%x\n", *td.ip, td.ip-header->code);
2699                         }
2700                         break;
2701                 default:
2702                         g_error ("transform.c: Unimplemented opcode: %02x at 0x%x\n", *td.ip, td.ip-header->code);
2703                 }
2704
2705                 if (td.new_ip - td.new_code != new_in_start_offset)
2706                         td.last_new_ip = td.new_code + new_in_start_offset;
2707                 else if (td.is_bb_start [td.in_start - td.il_code])
2708                         td.is_bb_start [td.ip - td.il_code] = 1;
2709
2710                 td.last_ip = td.in_start;
2711         }
2712
2713         if (mono_interp_traceopt) {
2714                 const guint16 *p = td.new_code;
2715                 printf("Runtime method: %p, VT stack size: %d\n", rtm, td.max_vt_sp);
2716                 printf("Calculated stack size: %d, stated size: %d\n", td.max_stack_height, header->max_stack);
2717                 while (p < td.new_ip) {
2718                         p = mono_interp_dis_mintop(td.new_code, p);
2719                         printf("\n");
2720                 }
2721         }
2722
2723         rtm->clauses = mono_mempool_alloc (domain->mp, header->num_clauses * sizeof(MonoExceptionClause));
2724         memcpy (rtm->clauses, header->clauses, header->num_clauses * sizeof(MonoExceptionClause));
2725         rtm->code = mono_mempool_alloc (domain->mp, (td.new_ip - td.new_code) * sizeof(gushort));
2726         memcpy (rtm->code, td.new_code, (td.new_ip - td.new_code) * sizeof(gushort));
2727         g_free (td.new_code);
2728         rtm->new_body_start = rtm->code + body_start_offset;
2729         rtm->num_clauses = header->num_clauses;
2730         for (i = 0; i < header->num_clauses; i++) {
2731                 MonoExceptionClause *c = rtm->clauses + i;
2732                 int end_off = c->try_offset + c->try_len;
2733                 c->try_offset = td.in_offsets [c->try_offset];
2734                 c->try_len = td.in_offsets [end_off] - c->try_offset;
2735                 end_off = c->handler_offset + c->handler_len;
2736                 c->handler_offset = td.in_offsets [c->handler_offset];
2737                 c->handler_len = td.in_offsets [end_off] - c->handler_offset;
2738         }
2739         rtm->vt_stack_size = td.max_vt_sp;
2740         rtm->alloca_size = rtm->locals_size + rtm->args_size + rtm->vt_stack_size + rtm->stack_size;
2741         rtm->data_items = mono_mempool_alloc (domain->mp, td.n_data_items * sizeof (td.data_items [0]));
2742         memcpy (rtm->data_items, td.data_items, td.n_data_items * sizeof (td.data_items [0]));
2743         g_free (td.in_offsets);
2744         g_free (td.forward_refs);
2745         for (i = 0; i < header->code_size; ++i)
2746                 g_free (td.stack_state [i]);
2747         g_free (td.stack_state);
2748         g_free (td.stack_height);
2749         g_free (td.vt_stack_size);
2750         g_free (td.data_items);
2751         g_hash_table_destroy (td.data_hash);
2752 }
2753
2754 static CRITICAL_SECTION calc_section;
2755
2756 void
2757 mono_interp_transform_init (void)
2758 {
2759         InitializeCriticalSection(&calc_section);
2760 }
2761
2762 MonoException *
2763 mono_interp_transform_method (RuntimeMethod *runtime_method, ThreadContext *context)
2764 {
2765         int i, align, size, offset;
2766         MonoMethod *method = runtime_method->method;
2767         MonoImage *image = method->klass->image;
2768         MonoMethodHeader *header = ((MonoMethodNormal*)method)->header;
2769         MonoMethodSignature *signature = method->signature;
2770         register const unsigned char *ip, *end;
2771         const MonoOpcode *opcode;
2772         MonoMethod *m;
2773         MonoClass *class;
2774         MonoDomain *domain = mono_domain_get ();
2775         unsigned char *is_bb_start;
2776         int in;
2777         MonoVTable *method_class_vt;
2778         int backwards;
2779         MonoGenericContext *generic_context = NULL;
2780
2781         method_class_vt = mono_class_vtable (domain, runtime_method->method->klass);
2782         if (!method_class_vt->initialized) {
2783                 jmp_buf env;
2784                 MonoInvocation *last_env_frame = context->env_frame;
2785                 jmp_buf *old_env = context->current_env;
2786
2787                 if (setjmp(env)) {
2788                         MonoException *failed = context->env_frame->ex;
2789                         context->env_frame->ex = NULL;
2790                         context->env_frame = last_env_frame;
2791                         context->current_env = old_env;
2792                         return failed;
2793                 }
2794                 context->env_frame = context->current_frame;
2795                 context->current_env = &env;
2796                 mono_runtime_class_init (method_class_vt);
2797                 context->env_frame = last_env_frame;
2798                 context->current_env = old_env;
2799         }
2800
2801         mono_profiler_method_jit (method); /* sort of... */
2802
2803         if (method->signature->is_inflated)
2804                 generic_context = ((MonoMethodInflated *) method)->context;
2805
2806         if (method->iflags & (METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL | METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
2807                 MonoMethod *nm = NULL;
2808                 EnterCriticalSection(&calc_section);
2809                 if (runtime_method->transformed) {
2810                         LeaveCriticalSection(&calc_section);
2811                         mono_profiler_method_end_jit (method, MONO_PROFILE_OK);
2812                         return NULL;
2813                 }
2814
2815                 /* assumes all internal calls with an array this are built in... */
2816                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
2817                         (!method->signature->hasthis || method->klass->rank == 0)) {
2818                         runtime_method->code = g_malloc(sizeof(short));
2819                         runtime_method->code[0] = MINT_CALLINT;
2820                         if (method->addr == NULL)
2821                                 method->addr = mono_lookup_internal_call (method);
2822                         runtime_method->func = mono_arch_create_trampoline (method->signature, method->string_ctor);
2823                 } else {
2824                         const char *name = method->name;
2825                         if (method->klass->parent == mono_defaults.multicastdelegate_class) {
2826                                 if (*name == 'I' && (strcmp (name, "Invoke") == 0)) {
2827                                         nm = mono_marshal_get_delegate_invoke (method);
2828                                 } else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
2829                                         nm = mono_marshal_get_delegate_begin_invoke (method);
2830                                 } else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
2831                                         nm = mono_marshal_get_delegate_end_invoke (method);
2832                                 }
2833                         }
2834                         if (nm == NULL) {
2835                                 runtime_method->code = g_malloc(sizeof(short));
2836                                 runtime_method->code[0] = MINT_CALLRUN;
2837                         }
2838                 }
2839                 if (nm == NULL) {
2840                         runtime_method->stack_size = sizeof (stackval); /* for tracing */
2841                         runtime_method->alloca_size = runtime_method->stack_size;
2842                         runtime_method->transformed = TRUE;
2843                         LeaveCriticalSection(&calc_section);
2844                         mono_profiler_method_end_jit (method, MONO_PROFILE_OK);
2845                         return NULL;
2846                 }
2847                 method = nm;
2848                 header = ((MonoMethodNormal *)nm)->header;
2849                 LeaveCriticalSection(&calc_section);
2850         }
2851         g_assert ((signature->param_count + signature->hasthis) < 1000);
2852         g_assert (header->max_stack < 10000);
2853         /* intern the strings in the method. */
2854         ip = header->code;
2855         end = ip + header->code_size;
2856
2857         is_bb_start = g_malloc0(header->code_size);
2858         is_bb_start [0] = 1;
2859         while (ip < end) {
2860                 in = *ip;
2861                 if (in == 0xfe) {
2862                         ip++;
2863                         in = *ip + 256;
2864                 }
2865                 else if (in == 0xf0) {
2866                         ip++;
2867                         in = *ip + MONO_CEE_MONO_FUNC1;
2868                 }
2869                 opcode = &mono_opcodes [in];
2870                 switch (opcode->argument) {
2871                 case MonoInlineNone:
2872                         ++ip;
2873                         break;
2874                 case MonoInlineString:
2875                         if (method->wrapper_type == MONO_WRAPPER_NONE)
2876                                 mono_ldstr (domain, image, mono_metadata_token_index (read32 (ip + 1)));
2877                         ip += 5;
2878                         break;
2879                 case MonoInlineType:
2880                         if (method->wrapper_type == MONO_WRAPPER_NONE) {
2881                                 class = mono_class_get_full (image, read32 (ip + 1), generic_context);
2882                                 mono_class_init (class);
2883                                 if (!(class->flags & TYPE_ATTRIBUTE_INTERFACE))
2884                                         mono_class_vtable (domain, class);
2885                         }
2886                         ip += 5;
2887                         break;
2888                 case MonoInlineMethod:
2889                         if (method->wrapper_type == MONO_WRAPPER_NONE && *ip != CEE_CALLI) {
2890                                 m = mono_get_method_full (image, read32 (ip + 1), NULL, generic_context);
2891                                 if (m == NULL) {
2892                                         g_free (is_bb_start);
2893                                         return mono_get_exception_missing_method ();
2894                                 }
2895                                 mono_class_init (m->klass);
2896                                 if (!(m->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2897                                         mono_class_vtable (domain, m->klass);
2898                         }
2899                         ip += 5;
2900                         break;
2901                 case MonoInlineField:
2902                 case MonoInlineSig:
2903                 case MonoInlineI:
2904                 case MonoInlineTok:
2905                 case MonoShortInlineR:
2906                         ip += 5;
2907                         break;
2908                 case MonoInlineBrTarget:
2909                         offset = read32 (ip + 1);
2910                         ip += 5;
2911                         backwards = offset < 0;
2912                         offset += ip - header->code;
2913                         g_assert (offset >= 0 && offset < header->code_size);
2914                         is_bb_start [offset] |= backwards ? 2 : 1;
2915                         break;
2916                 case MonoShortInlineBrTarget:
2917                         offset = ((gint8 *)ip) [1];
2918                         ip += 2;
2919                         backwards = offset < 0;
2920                         offset += ip - header->code;
2921                         g_assert (offset >= 0 && offset < header->code_size);
2922                         is_bb_start [offset] |= backwards ? 2 : 1;
2923                         break;
2924                 case MonoInlineVar:
2925                         ip += 3;
2926                         break;
2927                 case MonoShortInlineVar:
2928                 case MonoShortInlineI:
2929                         ip += 2;
2930                         break;
2931                 case MonoInlineSwitch: {
2932                         guint32 n;
2933                         const unsigned char *next_ip;
2934                         ++ip;
2935                         n = read32 (ip);
2936                         ip += 4;
2937                         next_ip = ip + 4 * n;
2938                         for (i = 0; i < n; i++) {
2939                                 offset = read32 (ip);
2940                                 backwards = offset < 0;
2941                                 offset += next_ip - header->code;
2942                                 g_assert (offset >= 0 && offset < header->code_size);
2943                                 is_bb_start [offset] |= backwards ? 2 : 1;
2944                                 ip += 4;
2945                         }
2946                         break;
2947                 }
2948                 case MonoInlineR:
2949                 case MonoInlineI8:
2950                         ip += 9;
2951                         break;
2952                 default:
2953                         g_assert_not_reached ();
2954                 }
2955         }
2956
2957         /* the rest needs to be locked so it is only done once */
2958         EnterCriticalSection(&calc_section);
2959         if (runtime_method->transformed) {
2960                 LeaveCriticalSection(&calc_section);
2961                 g_free (is_bb_start);
2962                 mono_profiler_method_end_jit (method, MONO_PROFILE_OK);
2963                 return NULL;
2964         }
2965
2966         runtime_method->local_offsets = g_malloc (header->num_locals * sizeof(guint32));
2967         runtime_method->stack_size = (sizeof (stackval) + 2) * header->max_stack; /* + 1 for returns of called functions  + 1 for 0-ing in trace*/
2968         runtime_method->stack_size = (runtime_method->stack_size + 7) & ~7;
2969         offset = 0;
2970         for (i = 0; i < header->num_locals; ++i) {
2971                 size = mono_type_size (header->locals [i], &align);
2972                 offset += align - 1;
2973                 offset &= ~(align - 1);
2974                 runtime_method->local_offsets [i] = offset;
2975                 offset += size;
2976         }
2977         offset = (offset + 7) & ~7;
2978         runtime_method->locals_size = offset;
2979         g_assert (runtime_method->locals_size < 65536);
2980         offset = 0;
2981         runtime_method->arg_offsets = g_malloc(signature->param_count * sizeof(guint32));
2982         for (i = 0; i < signature->param_count; ++i) {
2983                 if (signature->pinvoke) {
2984                         size = mono_type_native_stack_size (signature->params [i], &align);
2985                         align = 8;
2986                 }
2987                 else
2988                         size = mono_type_stack_size (signature->params [i], &align);
2989                 offset += align - 1;
2990                 offset &= ~(align - 1);
2991                 runtime_method->arg_offsets [i] = offset;
2992                 offset += size;
2993         }
2994         offset = (offset + 7) & ~7;
2995         runtime_method->args_size = offset;
2996         g_assert (runtime_method->args_size < 10000);
2997
2998         generate(method, runtime_method, is_bb_start);
2999
3000         g_free (is_bb_start);
3001
3002         mono_profiler_method_end_jit (method, MONO_PROFILE_OK);
3003         runtime_method->transformed = TRUE;
3004         LeaveCriticalSection(&calc_section);
3005
3006         return NULL;
3007 }
3008