mono/mini/mini-s390x.c

   1 /*------------------------------------------------------------------*/
   2 /*                                                                  */
   3 /* Name        - mini-s390.c                                        */
   4 /*                                                                  */
   5 /* Function    - S/390 backend for the Mono code generator.         */
   6 /*                                                                  */
   7 /* Name        - Neale Ferguson (Neale.Ferguson@SoftwareAG-usa.com) */
   8 /*                                                                  */
   9 /* Date        - January, 2004                                      */
  10 /*                                                                  */
  11 /* Derivation  - From mini-x86 & mini-ppc by -                      */
  12 /*               Paolo Molaro (lupus@ximian.com)                    */
  13 /*               Dietmar Maurer (dietmar@ximian.com)                */
  14 /*                                                                  */
  15 /*------------------------------------------------------------------*/
  16
  17 /*------------------------------------------------------------------*/
  18 /*                 D e f i n e s                                    */
  19 /*------------------------------------------------------------------*/
  20
  21 #define NOT_IMPLEMENTED(x) \
  22         g_error ("FIXME: %s is not yet implemented.", x);
  23
  24 #define EMIT_COND_BRANCH(ins,cond)                                                      \
  25 {                                                                                       \
  26 if (ins->flags & MONO_INST_BRLABEL) {                                                   \
  27         if (ins->inst_i0->inst_c0) {                                                    \
  28                 int displace;                                                           \
  29                 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2;     \
  30                 if (s390_is_imm16(displace)) {                                          \
  31                         s390_brc (code, cond, displace);                                \
  32                 } else {                                                                \
  33                         s390_jcl (code, cond, displace);                                \
  34                 }                                                                       \
  35         } else {                                                                        \
  36                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  37                                      MONO_PATCH_INFO_LABEL, ins->inst_i0);              \
  38                 s390_jcl (code, cond, 0);                                               \
  39         }                                                                               \
  40 } else {                                                                                \
  41         if (ins->inst_true_bb->native_offset) {                                         \
  42                 int displace;                                                           \
  43                 displace = ((cfg->native_code +                                         \
  44                             ins->inst_true_bb->native_offset) - code) / 2;              \
  45                 if (s390_is_imm16(displace)) {                                          \
  46                         s390_brc (code, cond, displace);                                \
  47                 } else {                                                                \
  48                         s390_jcl (code, cond, displace);                                \
  49                 }                                                                       \
  50         } else {                                                                        \
  51                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  52                                      MONO_PATCH_INFO_BB, ins->inst_true_bb);            \
  53                 s390_jcl (code, cond, 0);                                               \
  54         }                                                                               \
  55 }                                                                                       \
  56 }
  57
  58 #define EMIT_UNCOND_BRANCH(ins)                                                         \
  59 {                                                                                       \
  60 if (ins->flags & MONO_INST_BRLABEL) {                                                   \
  61         if (ins->inst_i0->inst_c0) {                                                    \
  62                 int displace;                                                           \
  63                 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2;     \
  64                 if (s390_is_imm16(displace)) {                                          \
  65                         s390_brc (code, S390_CC_UN, displace);                          \
  66                 } else {                                                                \
  67                         s390_jcl (code, S390_CC_UN, displace);                          \
  68                 }                                                                       \
  69         } else {                                                                        \
  70                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  71                                      MONO_PATCH_INFO_LABEL, ins->inst_i0);              \
  72                 s390_jcl (code, S390_CC_UN, 0);                                         \
  73         }                                                                               \
  74 } else {                                                                                \
  75         if (ins->inst_target_bb->native_offset) {                                       \
  76                 int displace;                                                           \
  77                 displace = ((cfg->native_code +                                         \
  78                             ins->inst_target_bb->native_offset) - code) / 2;            \
  79                 if (s390_is_imm16(displace)) {                                          \
  80                         s390_brc (code, S390_CC_UN, displace);                          \
  81                 } else {                                                                \
  82                         s390_jcl (code, S390_CC_UN, displace);                          \
  83                 }                                                                       \
  84         } else {                                                                        \
  85                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  86                                      MONO_PATCH_INFO_BB, ins->inst_target_bb);          \
  87                 s390_jcl (code, S390_CC_UN, 0);                                         \
  88         }                                                                               \
  89 }                                                                                       \
  90 }
  91
  92 #define EMIT_COND_SYSTEM_EXCEPTION(cond,exc_name)                       \
  93         do {                                                            \
  94                 mono_add_patch_info (cfg, code - cfg->native_code,      \
  95                                     MONO_PATCH_INFO_EXC, exc_name);     \
  96                 s390_jcl (code, cond, 0);                               \
  97         } while (0);
  98
  99 #define CHECK_SRCDST_COM                                                \
 100         if (ins->dreg == ins->sreg2) {                                  \
 101                 src2 = ins->sreg1;                                      \
 102         } else {                                                        \
 103                 src2 = ins->sreg2;                                      \
 104                 if (ins->dreg != ins->sreg1) {                          \
 105                         s390_lgr (code, ins->dreg, ins->sreg1);         \
 106                 }                                                       \
 107         }
 108
 109 #define CHECK_SRCDST_NCOM                                               \
 110         if (ins->dreg == ins->sreg2) {                                  \
 111                 src2 = s390_r13;                                        \
 112                 s390_lgr (code, s390_r13, ins->sreg2);                  \
 113         } else {                                                        \
 114                 src2 = ins->sreg2;                                      \
 115         }                                                               \
 116         if (ins->dreg != ins->sreg1) {                                  \
 117                 s390_lgr (code, ins->dreg, ins->sreg1);                 \
 118         }
 119
 120 #define CHECK_SRCDST_COM_I                                              \
 121         if (ins->dreg == ins->sreg2) {                                  \
 122                 src2 = ins->sreg1;                                      \
 123         } else {                                                        \
 124                 src2 = ins->sreg2;                                      \
 125                 if (ins->dreg != ins->sreg1) {                          \
 126                         s390_lgfr (code, ins->dreg, ins->sreg1);        \
 127                 }                                                       \
 128         }
 129
 130 #define CHECK_SRCDST_NCOM_I                                             \
 131         if (ins->dreg == ins->sreg2) {                                  \
 132                 src2 = s390_r13;                                        \
 133                 s390_lgfr (code, s390_r13, ins->sreg2);                 \
 134         } else {                                                        \
 135                 src2 = ins->sreg2;                                      \
 136         }                                                               \
 137         if (ins->dreg != ins->sreg1) {                                  \
 138                 s390_lgfr (code, ins->dreg, ins->sreg1);                \
 139         }
 140
 141 #define CHECK_SRCDST_COM_F                                              \
 142         if (ins->dreg == ins->sreg2) {                                  \
 143                 src2 = ins->sreg1;                                      \
 144         } else {                                                        \
 145                 src2 = ins->sreg2;                                      \
 146                 if (ins->dreg != ins->sreg1) {                          \
 147                         s390_ldr (code, ins->dreg, ins->sreg1);         \
 148                 }                                                       \
 149         }
 150
 151 #define CHECK_SRCDST_NCOM_F                                             \
 152         if (ins->dreg == ins->sreg2) {                                  \
 153                 src2 = s390_f15;                                        \
 154                 s390_ldr (code, s390_r13, ins->sreg2);                  \
 155         } else {                                                        \
 156                 src2 = ins->sreg2;                                      \
 157         }                                                               \
 158         if (ins->dreg != ins->sreg1) {                                  \
 159                 s390_ldr (code, ins->dreg, ins->sreg1);                 \
 160         }
 161
 162 #undef DEBUG
 163 #define DEBUG(a) if (cfg->verbose_level > 1) a
 164
 165 #define MAX_EXC 16
 166
 167 #define S390_TRACE_STACK_SIZE (5*sizeof(gpointer)+4*sizeof(gdouble))
 168
 169 #define MAX (a, b) ((a) > (b) ? (a) : (b))
 170
 171 /*========================= End of Defines =========================*/
 172
 173 /*------------------------------------------------------------------*/
 174 /*                 I n c l u d e s                                  */
 175 /*------------------------------------------------------------------*/
 176
 177 #include "mini.h"
 178 #include <string.h>
 179
 180 #include <mono/metadata/appdomain.h>
 181 #include <mono/metadata/debug-helpers.h>
 182 #include <mono/metadata/profiler-private.h>
 183 #include <mono/utils/mono-math.h>
 184
 185 #include "mini-s390x.h"
 186 #include "inssel.h"
 187 #include "cpu-s390x.h"
 188
 189 /*========================= End of Includes ========================*/
 190
 191 /*------------------------------------------------------------------*/
 192 /*                 T y p e d e f s                                  */
 193 /*------------------------------------------------------------------*/
 194
 195 typedef struct {
 196         guint stack_size,
 197               local_size,
 198               code_size,
 199               parm_size,
 200               offset,
 201               offStruct,
 202               retStruct;
 203 } size_data;
 204
 205 typedef enum {
 206         CMP_EQ,
 207         CMP_NE,
 208         CMP_LE,
 209         CMP_GE,
 210         CMP_LT,
 211         CMP_GT,
 212         CMP_LE_UN,
 213         CMP_GE_UN,
 214         CMP_LT_UN,
 215         CMP_GT_UN
 216 } CompRelation;
 217
 218 typedef enum {
 219         CMP_TYPE_L,
 220         CMP_TYPE_I,
 221         CMP_TYPE_F
 222 } CompType;
 223
 224 /*------------------------------------------------------------------*/
 225 /* Used by the instrument_emit_epilog                               */
 226 /*------------------------------------------------------------------*/
 227
 228 enum {
 229         SAVE_NONE,
 230         SAVE_STRUCT,
 231         SAVE_ONE,
 232         SAVE_TWO,
 233         SAVE_R4,
 234         SAVE_R8
 235 };
 236
 237 typedef struct InstList InstList;
 238
 239 struct InstList {
 240         InstList *prev;
 241         InstList *next;
 242         MonoInst *data;
 243 };
 244
 245 enum {
 246         RegTypeGeneral,
 247         RegTypeBase,
 248         RegTypeFP,
 249         RegTypeStructByVal,
 250         RegTypeStructByAddr
 251 };
 252
 253 typedef struct {
 254         gint32  offset;         /* offset from caller's stack */
 255         gint32  offparm;        /* offset from callee's stack */
 256         guint16 vtsize;         /* in param area */
 257         guint8  reg;
 258         guint8  regtype;        /* See RegType* */
 259         guint32 size;           /* Size of structure used by RegTypeStructByVal */
 260         gint32  type;           /* Data type of argument */
 261 } ArgInfo;
 262
 263 typedef struct {
 264         int nargs;
 265         int lastgr;
 266         guint32 stack_usage;
 267         guint32 struct_ret;
 268         ArgInfo ret;
 269         ArgInfo sigCookie;
 270         ArgInfo args [1];
 271 } CallInfo;
 272
 273 typedef struct {
 274         gint64  gr[5];          /* R2-R6                            */
 275         gdouble fp[3];          /* F0-F2                            */
 276 } __attribute__ ((packed)) RegParm;
 277
 278 /*========================= End of Typedefs ========================*/
 279
 280 /*------------------------------------------------------------------*/
 281 /*                   P r o t o t y p e s                            */
 282 /*------------------------------------------------------------------*/
 283
 284 static void indent (int);
 285 static guint8 * backUpStackPtr(MonoCompile *, guint8 *);
 286 static void decodeParm (MonoType *, void *, int);
 287 static void enter_method (MonoMethod *, RegParm *, char *);
 288 static void leave_method (MonoMethod *, ...);
 289 static gboolean is_regsize_var (MonoType *);
 290 static inline void add_general (guint *, size_data *, ArgInfo *);
 291 static inline void add_stackParm (guint *, size_data *, ArgInfo *, gint);
 292 static inline void add_float (guint *, size_data *, ArgInfo *);
 293 static CallInfo * calculate_sizes (MonoMethodSignature *, size_data *, gboolean);
 294 static void peephole_pass (MonoCompile *, MonoBasicBlock *);
 295 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
 296 static void mono_arch_break(void);
 297 gpointer mono_arch_get_lmf_addr (void);
 298 static guint8 * emit_load_volatile_registers (guint8 *, MonoCompile *);
 299 static CompRelation opcode_to_cond (int);
 300 static void catch_SIGILL(int, siginfo_t *, void *);
 301 static void emit_sig_cookie (MonoCompile *, MonoCallInst *, CallInfo *, int);
 302
 303 /*========================= End of Prototypes ======================*/
 304
 305 /*------------------------------------------------------------------*/
 306 /*                 G l o b a l   V a r i a b l e s                  */
 307 /*------------------------------------------------------------------*/
 308
 309 int mono_exc_esp_offset = 0;
 310
 311 static int indent_level = 0;
 312
 313 int has_ld = 0;
 314
 315 static gboolean tls_offset_inited = FALSE;
 316
 317 static int appdomain_tls_offset = -1,
 318            lmf_tls_offset = -1,
 319            thread_tls_offset = -1;
 320
 321 pthread_key_t lmf_addr_key;
 322
 323 gboolean lmf_addr_key_inited = FALSE;
 324
 325 #if 0
 326
 327 extern __thread MonoDomain *tls_appdomain;
 328 extern __thread MonoThread *tls_current_object;
 329 extern __thread gpointer   mono_lmf_addr;
 330
 331 #endif
 332
 333 /*====================== End of Global Variables ===================*/
 334
 335 /*------------------------------------------------------------------*/
 336 /*                                                                  */
 337 /* Name         - mono_arch_regname                                 */
 338 /*                                                                  */
 339 /* Function     - Returns the name of the register specified by     */
 340 /*                the input parameter.                              */
 341 /*                                                                  */
 342 /*------------------------------------------------------------------*/
 343
 344 const char*
 345 mono_arch_regname (int reg) {
 346         static const char * rnames[] = {
 347                 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
 348                 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
 349                 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
 350                 "s390_r15"
 351         };
 352
 353         if (reg >= 0 && reg < 16)
 354                 return rnames [reg];
 355         else
 356                 return "unknown";
 357 }
 358
 359 /*========================= End of Function ========================*/
 360
 361 /*------------------------------------------------------------------*/
 362 /*                                                                  */
 363 /* Name         - mono_arch_fregname                                */
 364 /*                                                                  */
 365 /* Function     - Returns the name of the register specified by     */
 366 /*                the input parameter.                              */
 367 /*                                                                  */
 368 /*------------------------------------------------------------------*/
 369
 370 const char*
 371 mono_arch_fregname (int reg) {
 372         static const char * rnames[] = {
 373                 "s390_f0", "s390_f1", "s390_f2", "s390_f3", "s390_f4",
 374                 "s390_f5", "s390_f6", "s390_f7", "s390_f8", "s390_f9",
 375                 "s390_f10", "s390_f11", "s390_f12", "s390_f13", "s390_f14",
 376                 "s390_f15"
 377         };
 378
 379         if (reg >= 0 && reg < 16)
 380                 return rnames [reg];
 381         else
 382                 return "unknown";
 383 }
 384
 385 /*========================= End of Function ========================*/
 386
 387 /*------------------------------------------------------------------*/
 388 /*                                                                  */
 389 /* Name         - arch_get_argument_info                            */
 390 /*                                                                  */
 391 /* Function     - Gathers information on parameters such as size,   */
 392 /*                alignment, and padding. arg_info should be large  */
 393 /*                enough to hold param_count + 1 entries.           */
 394 /*                                                                  */
 395 /* Parameters   - @csig - Method signature                          */
 396 /*                @param_count - No. of parameters to consider      */
 397 /*                @arg_info - An array to store the result info     */
 398 /*                                                                  */
 399 /* Returns      - Size of the activation frame                      */
 400 /*                                                                  */
 401 /*------------------------------------------------------------------*/
 402
 403 int
 404 mono_arch_get_argument_info (MonoMethodSignature *csig,
 405                              int param_count,
 406                              MonoJitArgumentInfo *arg_info)
 407 {
 408         int k, frame_size = 0;
 409         int size, align, pad;
 410         int offset = 8;
 411
 412         if (MONO_TYPE_ISSTRUCT (csig->ret)) {
 413                 frame_size += sizeof (gpointer);
 414                 offset += 8;
 415         }
 416
 417         arg_info [0].offset = offset;
 418
 419         if (csig->hasthis) {
 420                 frame_size += sizeof (gpointer);
 421                 offset += 8;
 422         }
 423
 424         arg_info [0].size = frame_size;
 425
 426         for (k = 0; k < param_count; k++) {
 427
 428                 if (csig->pinvoke)
 429                         size = mono_type_native_stack_size (csig->params [k], &align);
 430                 else
 431                         size = mono_type_stack_size (csig->params [k], &align);
 432
 433                 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
 434                 arg_info [k].pad = pad;
 435                 frame_size += size;
 436                 arg_info [k + 1].pad = 0;
 437                 arg_info [k + 1].size = size;
 438                 offset += pad;
 439                 arg_info [k + 1].offset = offset;
 440                 offset += size;
 441         }
 442
 443         align = MONO_ARCH_FRAME_ALIGNMENT;
 444         frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
 445         arg_info [k].pad = pad;
 446
 447         return frame_size;
 448 }
 449
 450 /*========================= End of Function ========================*/
 451
 452 /*------------------------------------------------------------------*/
 453 /*                                                                  */
 454 /* Name         - retFitsInReg.                                     */
 455 /*                                                                  */
 456 /* Function     - Determines if a value can be returned in one or   */
 457 /*                two registers.                                    */
 458 /*                                                                  */
 459 /*------------------------------------------------------------------*/
 460
 461 static inline gboolean
 462 retFitsInReg(guint32 size)
 463 {
 464         switch (size) {
 465                 case 0:
 466                 case 1:
 467                 case 2:
 468                 case 4:
 469                 case 8:
 470                         return (TRUE);
 471                 break;
 472                 default:
 473                         return (FALSE);
 474         }
 475 }
 476
 477 /*========================= End of Function ========================*/
 478
 479 /*------------------------------------------------------------------*/
 480 /*                                                                  */
 481 /* Name         - backStackPtr.                                     */
 482 /*                                                                  */
 483 /* Function     - Restore Stack Pointer to previous frame.          */
 484 /*                                                                  */
 485 /*------------------------------------------------------------------*/
 486
 487 static inline guint8 *
 488 backUpStackPtr(MonoCompile *cfg, guint8 *code)
 489 {
 490         int stackSize = cfg->stack_usage;
 491
 492         if (s390_is_uimm16 (stackSize)) {
 493                 s390_aghi  (code, STK_BASE, stackSize);
 494         } else {
 495                 while (stackSize > 32767) {
 496                         s390_aghi  (code, STK_BASE, 32767);
 497                         stackSize -= 32767;
 498                 }
 499                 s390_aghi  (code, STK_BASE, stackSize);
 500         }
 501         return (code);
 502 }
 503
 504 /*========================= End of Function ========================*/
 505
 506 /*------------------------------------------------------------------*/
 507 /*                                                                  */
 508 /* Name         - indent                                            */
 509 /*                                                                  */
 510 /* Function     - Perform nice indenting to current level           */
 511 /*                                                                  */
 512 /*------------------------------------------------------------------*/
 513
 514 static void
 515 indent (int diff) {
 516         int v;
 517         if (diff < 0)
 518                 indent_level += diff;
 519         v = indent_level;
 520         printf("[%3d] ",v);
 521         while (v-- > 0) {
 522                 printf (". ");
 523         }
 524         if (diff > 0)
 525                 indent_level += diff;
 526 }
 527
 528 /*========================= End of Function ========================*/
 529
 530 /*------------------------------------------------------------------*/
 531 /*                                                                  */
 532 /* Name         - decodeParm                                        */
 533 /*                                                                  */
 534 /* Function     - Decode a parameter for the trace.                 */
 535 /*                                                                  */
 536 /*------------------------------------------------------------------*/
 537
 538 static void
 539 decodeParm(MonoType *type, void *curParm, int size)
 540 {
 541         guint32 simpleType;
 542
 543         if (type->byref) {
 544                 printf("[BYREF:%p], ", *((char **) curParm));
 545         } else {
 546                 simpleType = mono_type_get_underlying_type(type)->type;
 547 enum_parmtype:
 548                 switch (simpleType) {
 549                         case MONO_TYPE_I :
 550                                 printf ("[INTPTR:%p], ", *((int **) curParm));
 551                                 break;
 552                         case MONO_TYPE_U :
 553                                 printf ("[UINTPTR:%p], ", *((int **) curParm));
 554                                 break;
 555                         case MONO_TYPE_BOOLEAN :
 556                                 printf ("[BOOL:%ld], ", *((gint64 *) curParm));
 557                                 break;
 558                         case MONO_TYPE_CHAR :
 559                                 printf ("[CHAR:%c], ", *((int  *) curParm));
 560                                 break;
 561                         case MONO_TYPE_I1 :
 562                                 printf ("[INT1:%ld], ", *((gint64 *) curParm));
 563                                 break;
 564                         case MONO_TYPE_I2 :
 565                                 printf ("[INT2:%ld], ", *((gint64 *) curParm));
 566                                 break;
 567                         case MONO_TYPE_I4 :
 568                                 printf ("[INT4:%ld], ", *((gint64 *) curParm));
 569                                 break;
 570                         case MONO_TYPE_U1 :
 571                                 printf ("[UINT1:%lu], ", *((guint64 *) curParm));
 572                                 break;
 573                         case MONO_TYPE_U2 :
 574                                 printf ("[UINT2:%lu], ", *((guint64 *) curParm));
 575                                 break;
 576                         case MONO_TYPE_U4 :
 577                                 printf ("[UINT4:%lu], ", *((guint64 *) curParm));
 578                                 break;
 579                         case MONO_TYPE_U8 :
 580                                 printf ("[UINT8:%lu], ", *((guint64 *) curParm));
 581                                 break;
 582                         case MONO_TYPE_STRING : {
 583                                 MonoString *s = *((MonoString **) curParm);
 584                                 if (s) {
 585                                         g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
 586                                         printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
 587                                 } else {
 588                                         printf("[STRING:null], ");
 589                                 }
 590                                 break;
 591                         }
 592                         case MONO_TYPE_CLASS :
 593                         case MONO_TYPE_OBJECT : {
 594                                 MonoObject *obj = *((MonoObject **) curParm);
 595                                 MonoClass *class;
 596                                 if ((obj) && (obj->vtable)) {
 597                                         printf("[CLASS/OBJ:");
 598                                         class = obj->vtable->klass;
 599                                         printf("%p [%p] ",obj,curParm);
 600                                         if (class == mono_defaults.string_class) {
 601                                                 printf("[STRING:%p:%s]",
 602                                                        obj, mono_string_to_utf8 ((MonoString *) obj));
 603                                         } else if (class == mono_defaults.int32_class) {
 604                                                 printf("[INT32:%p:%d]",
 605                                                         obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
 606                                         } else
 607                                                 printf("[%s.%s:%p]",
 608                                                        class->name_space, class->name, obj);
 609                                         printf("], ");
 610                                 } else {
 611                                         printf("[OBJECT:null], ");
 612                                 }
 613                                 break;
 614                         }
 615                         case MONO_TYPE_PTR :
 616                                 printf("[PTR:%p], ", *((gpointer **) (curParm)));
 617                                 break;
 618                         case MONO_TYPE_FNPTR :
 619                                 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
 620                                 break;
 621                         case MONO_TYPE_ARRAY :
 622                                 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
 623                                 break;
 624                         case MONO_TYPE_SZARRAY :
 625                                 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
 626                                 break;
 627                         case MONO_TYPE_I8 :
 628                                 printf("[INT8:%ld], ", *((gint64 *) (curParm)));
 629                                 break;
 630                         case MONO_TYPE_R4 :
 631                                 printf("[FLOAT4:%g], ", *((float *) (curParm)));
 632                                 break;
 633                         case MONO_TYPE_R8 :
 634                                 printf("[FLOAT8:%g], ", *((double *) (curParm)));
 635                                 break;
 636                         case MONO_TYPE_VALUETYPE : {
 637                                 int i;
 638                                 MonoMarshalType *info;
 639
 640                                 if (type->data.klass->enumtype) {
 641                                         simpleType = type->data.klass->enum_basetype->type;
 642                                         printf("{VALUETYPE} - ");
 643                                         goto enum_parmtype;
 644                                 }
 645
 646                                 info = mono_marshal_load_type_info (type->data.klass);
 647
 648                                 if ((info->native_size == sizeof(float)) &&
 649                                     (info->num_fields  == 1) &&
 650                                     (info->fields[0].field->type->type == MONO_TYPE_R4)) {
 651                                                 printf("[FLOAT4:%f], ", *((float *) (curParm)));
 652                                         break;
 653                                 }
 654
 655                                 if ((info->native_size == sizeof(double)) &&
 656                                     (info->num_fields  == 1) &&
 657                                     (info->fields[0].field->type->type == MONO_TYPE_R8)) {
 658                                         printf("[FLOAT8:%g], ", *((double *) (curParm)));
 659                                         break;
 660                                 }
 661
 662                                 printf("[VALUETYPE:");
 663                                 for (i = 0; i < size; i++)
 664                                         printf("%02x,", *((guint8 *)curParm+i));
 665                                 printf("]");
 666                                 break;
 667                         }
 668                         case MONO_TYPE_TYPEDBYREF: {
 669                                 int i;
 670                                 printf("[TYPEDBYREF:");
 671                                 for (i = 0; i < size; i++)
 672                                         printf("%02x,", *((guint8 *)curParm+i));
 673                                 printf("]");
 674                                 break;
 675                         }
 676                         default :
 677                                 printf("[?? - %d], ",simpleType);
 678                 }
 679         }
 680 }
 681
 682 /*========================= End of Function ========================*/
 683
 684 /*------------------------------------------------------------------*/
 685 /*                                                                  */
 686 /* Name         - enter_method                                      */
 687 /*                                                                  */
 688 /* Function     - Perform tracing of the entry to the current       */
 689 /*                method.                                           */
 690 /*                                                                  */
 691 /*------------------------------------------------------------------*/
 692
 693 static void
 694 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
 695 {
 696         int i, oParm = 0, iParm = 0;
 697         MonoClass *class;
 698         MonoObject *obj;
 699         MonoMethodSignature *sig;
 700         char *fname;
 701         guint64 ip;
 702         CallInfo *cinfo;
 703         ArgInfo *ainfo;
 704         size_data sz;
 705         void *curParm;
 706
 707         fname = mono_method_full_name (method, TRUE);
 708         indent (1);
 709         printf ("ENTER: %s ", fname);
 710         g_free (fname);
 711
 712         ip  = (*(guint64 *) (sp+S390_RET_ADDR_OFFSET));
 713         printf ("ip: %p sp: %p - ", (gpointer) ip, sp);
 714
 715         if (rParm == NULL)
 716                 return;
 717
 718         sig = mono_method_signature (method);
 719
 720         cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
 721
 722         if (cinfo->struct_ret) {
 723                 printf ("[STRUCTRET:%p], ", (gpointer) rParm->gr[0]);
 724                 iParm = 1;
 725         }
 726
 727         if (sig->hasthis) {
 728                 gpointer *this = (gpointer *) rParm->gr[iParm];
 729                 obj = (MonoObject *) this;
 730                 if (method->klass->valuetype) {
 731                         if (obj) {
 732                                 printf("this:[value:%p:%016lx], ",
 733                                        this, *((guint64 *)(this+sizeof(MonoObject))));
 734                         } else
 735                                 printf ("this:[NULL], ");
 736                 } else {
 737                         if (obj) {
 738                                 class = obj->vtable->klass;
 739                                 if (class == mono_defaults.string_class) {
 740                                         printf ("this:[STRING:%p:%s], ",
 741                                                 obj, mono_string_to_utf8 ((MonoString *)obj));
 742                                 } else {
 743                                         printf ("this:%p[%s.%s], ",
 744                                                 obj, class->name_space, class->name);
 745                                 }
 746                         } else
 747                                 printf ("this:NULL, ");
 748                 }
 749                 oParm++;
 750         }
 751
 752         for (i = 0; i < sig->param_count; ++i) {
 753                 ainfo = &cinfo->args[i + oParm];
 754                 switch (ainfo->regtype) {
 755                         case RegTypeGeneral :
 756                                 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
 757                                 break;
 758                         case RegTypeFP :
 759                                 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
 760                                 break;
 761                         case RegTypeBase :
 762                                 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
 763                                 break;
 764                         case RegTypeStructByVal :
 765                                 if (ainfo->reg != STK_BASE) {
 766                                         int offset = sizeof(glong) - ainfo->size;
 767                                         curParm = &(rParm->gr[ainfo->reg-2])+offset;
 768                                 }
 769                                 else
 770                                         curParm = sp+ainfo->offset;
 771
 772                                 if (retFitsInReg (ainfo->vtsize))
 773                                         decodeParm(sig->params[i],
 774                                                    curParm,
 775                                                    ainfo->size);
 776                                 else
 777                                         decodeParm(sig->params[i],
 778                                                    *((char **) curParm),
 779                                                    ainfo->vtsize);
 780                                 break;
 781                         case RegTypeStructByAddr :
 782                                 if (ainfo->reg != STK_BASE)
 783                                         curParm = &(rParm->gr[ainfo->reg-2]);
 784                                 else
 785                                         curParm = sp+ainfo->offset;
 786
 787                                 decodeParm(sig->params[i],
 788                                            *((char **) curParm),
 789                                            ainfo->vtsize);
 790                                 break;
 791
 792                         default :
 793                                 printf("???, ");
 794                 }
 795         }
 796         printf("\n");
 797         g_free(cinfo);
 798 }
 799
 800 /*========================= End of Function ========================*/
 801
 802 /*------------------------------------------------------------------*/
 803 /*                                                                  */
 804 /* Name         - leave_method                                      */
 805 /*                                                                  */
 806 /* Function     -                                                   */
 807 /*                                                                  */
 808 /*------------------------------------------------------------------*/
 809
 810 static void
 811 leave_method (MonoMethod *method, ...)
 812 {
 813         MonoType *type;
 814         char *fname;
 815         guint64 ip;
 816         va_list ap;
 817
 818         va_start(ap, method);
 819
 820         fname = mono_method_full_name (method, TRUE);
 821         indent (-1);
 822         printf ("LEAVE: %s", fname);
 823         g_free (fname);
 824
 825         type = mono_method_signature (method)->ret;
 826
 827 handle_enum:
 828         switch (type->type) {
 829         case MONO_TYPE_VOID:
 830                 break;
 831         case MONO_TYPE_BOOLEAN: {
 832                 int val = va_arg (ap, int);
 833                 if (val)
 834                         printf ("[TRUE:%d]", val);
 835                 else
 836                         printf ("[FALSE]");
 837
 838                 break;
 839         }
 840         case MONO_TYPE_CHAR: {
 841                 int val = va_arg (ap, int);
 842                 printf ("[CHAR:%d]", val);
 843                 break;
 844         }
 845         case MONO_TYPE_I1: {
 846                 int val = va_arg (ap, int);
 847                 printf ("[INT1:%d]", val);
 848                 break;
 849         }
 850         case MONO_TYPE_U1: {
 851                 int val = va_arg (ap, int);
 852                 printf ("[UINT1:%d]", val);
 853                 break;
 854         }
 855         case MONO_TYPE_I2: {
 856                 int val = va_arg (ap, int);
 857                 printf ("[INT2:%d]", val);
 858                 break;
 859         }
 860         case MONO_TYPE_U2: {
 861                 int val = va_arg (ap, int);
 862                 printf ("[UINT2:%d]", val);
 863                 break;
 864         }
 865         case MONO_TYPE_I4: {
 866                 int val = va_arg (ap, int);
 867                 printf ("[INT4:%d]", val);
 868                 break;
 869         }
 870         case MONO_TYPE_U4: {
 871                 int val = va_arg (ap, int);
 872                 printf ("[UINT4:%d]", val);
 873                 break;
 874         }
 875         case MONO_TYPE_I: {
 876                 gint64 val = va_arg (ap, gint64);
 877                 printf ("[INT:%ld]", val);
 878                 printf("]");
 879                 break;
 880         }
 881         case MONO_TYPE_U: {
 882                 gint64 val = va_arg (ap, gint64);
 883                 printf ("[UINT:%lu]", val);
 884                 printf("]");
 885                 break;
 886         }
 887         case MONO_TYPE_STRING: {
 888                 MonoString *s = va_arg (ap, MonoString *);
 889 ;
 890                 if (s) {
 891                         g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
 892                         printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
 893                 } else
 894                         printf ("[STRING:null], ");
 895                 break;
 896         }
 897         case MONO_TYPE_CLASS:
 898         case MONO_TYPE_OBJECT: {
 899                 MonoObject *o = va_arg (ap, MonoObject *);
 900
 901                 if ((o) && (o->vtable)) {
 902                         if (o->vtable->klass == mono_defaults.boolean_class) {
 903                                 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
 904                         } else if  (o->vtable->klass == mono_defaults.int32_class) {
 905                                 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
 906                         } else if  (o->vtable->klass == mono_defaults.int64_class) {
 907                                 printf ("[INT64:%p:%ld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
 908                         } else
 909                                 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
 910                 } else
 911                         printf ("[OBJECT:%p]", o);
 912
 913                 break;
 914         }
 915         case MONO_TYPE_PTR:
 916         case MONO_TYPE_FNPTR:
 917         case MONO_TYPE_ARRAY:
 918         case MONO_TYPE_SZARRAY: {
 919                 gpointer p = va_arg (ap, gpointer);
 920                 printf ("[result=%p]", p);
 921                 break;
 922         }
 923         case MONO_TYPE_I8: {
 924                 gint64 l =  va_arg (ap, gint64);
 925                 printf ("[LONG:%ld]", l);
 926                 break;
 927         }
 928         case MONO_TYPE_U8: {
 929                 guint64 l =  va_arg (ap, guint64);
 930                 printf ("[ULONG:%lu]", l);
 931                 break;
 932         }
 933         case MONO_TYPE_R4: {
 934                 double f = va_arg (ap, double);
 935                 printf ("[FLOAT4:%g]\n", f);
 936                 break;
 937         }
 938         case MONO_TYPE_R8: {
 939                 double f = va_arg (ap, double);
 940                 printf ("[FLOAT8:%g]\n", f);
 941                 break;
 942         }
 943         case MONO_TYPE_VALUETYPE: {
 944                 MonoMarshalType *info;
 945                 if (type->data.klass->enumtype) {
 946                         type = type->data.klass->enum_basetype;
 947                         goto handle_enum;
 948                 } else {
 949                         guint8 *p = va_arg (ap, gpointer);
 950                         int j, size, align;
 951
 952                         info = mono_marshal_load_type_info (type->data.klass);
 953
 954                         if ((info->native_size == sizeof(float)) &&
 955                             (info->num_fields  == 1) &&
 956                             (info->fields[0].field->type->type == MONO_TYPE_R4)) {
 957                                 double f = va_arg (ap, double);
 958                                 printf("[FLOAT4:%g]\n", (double) f);
 959                                 break;
 960                         }
 961
 962                         if ((info->native_size == sizeof(double)) &&
 963                             (info->num_fields  == 1) &&
 964                             (info->fields[0].field->type->type == MONO_TYPE_R8)) {
 965                                 double f = va_arg (ap, double);
 966                                 printf("[FLOAT8:%g]\n", f);
 967                                 break;
 968                         }
 969
 970                         size = mono_type_size (type, &align);
 971                         switch (size) {
 972                         case 1:
 973                         case 2:
 974                         case 4:
 975                         case 8:
 976                                 printf ("[");
 977                                 for (j = 0; p && j < size; j++)
 978                                         printf ("%02x,", p [j]);
 979                                 printf ("]\n");
 980                                 break;
 981                         default:
 982                                 printf ("[VALUETYPE]\n");
 983                         }
 984                 }
 985                 break;
 986         }
 987         case MONO_TYPE_TYPEDBYREF: {
 988                 guint8 *p = va_arg (ap, gpointer);
 989                 int j, size, align;
 990                 size = mono_type_size (type, &align);
 991                 switch (size) {
 992                 case 1:
 993                 case 2:
 994                 case 4:
 995                 case 8:
 996                         printf ("[");
 997                         for (j = 0; p && j < size; j++)
 998                                 printf ("%02x,", p [j]);
 999                         printf ("]\n");
1000                         break;
1001                 default:
1002                         printf ("[TYPEDBYREF]\n");
1003                 }
1004         }
1005                 break;
1006         default:
1007                 printf ("(unknown return type %x)",
1008                         mono_method_signature (method)->ret->type);
1009         }
1010
1011         ip = ((gint64) __builtin_return_address (0));
1012         printf (" ip: %p\n", (gpointer) ip);
1013 }
1014
1015 /*========================= End of Function ========================*/
1016
1017 /*------------------------------------------------------------------*/
1018 /*                                                                  */
1019 /* Name         - catch_SIGILL                                      */
1020 /*                                                                  */
1021 /* Function     - Catch SIGILL as a result of testing for long      */
1022 /*                displacement facility.                            */
1023 /*                                                                  */
1024 /*------------------------------------------------------------------*/
1025
1026 void
1027 catch_SIGILL(int sigNo, siginfo_t *info, void *act) {
1028
1029         has_ld = 0;
1030
1031 }
1032
1033 /*========================= End of Function ========================*/
1034
1035 /*------------------------------------------------------------------*/
1036 /*                                                                  */
1037 /* Name         - mono_arch_cpu_init                                */
1038 /*                                                                  */
1039 /* Function     - Perform CPU specific initialization to execute    */
1040 /*                managed code.                                     */
1041 /*                                                                  */
1042 /*------------------------------------------------------------------*/
1043
1044 void
1045 mono_arch_cpu_init (void)
1046 {
1047         struct sigaction sa,
1048                          *oldSa = NULL;
1049         guint mode = 1;
1050
1051         /*--------------------------------------*/
1052         /* Set default rounding mode for FP     */
1053         /*--------------------------------------*/
1054         __asm__ ("SRNM\t%0\n\t"
1055                 : : "m" (mode));
1056
1057         /*--------------------------------------*/
1058         /* Determine if we have long displace-  */
1059         /* ment facility on this processor      */
1060         /*--------------------------------------*/
1061         sa.sa_sigaction = catch_SIGILL;
1062         sigemptyset (&sa.sa_mask);
1063         sa.sa_flags = SA_SIGINFO;
1064
1065         sigaction (SIGILL, &sa, oldSa);
1066
1067         /*--------------------------------------*/
1068         /* We test by executing the STY inst    */
1069         /*--------------------------------------*/
1070         __asm__ ("LGHI\t0,1\n\t"
1071                  "LA\t1,%0\n\t"
1072                  ".byte\t0xe3,0x00,0x10,0x00,0x00,0x50\n\t"
1073                 : "=m" (has_ld) : : "0", "1");
1074
1075         sigaction (SIGILL, oldSa, NULL);
1076 }
1077
1078 /*========================= End of Function ========================*/
1079
1080 /*------------------------------------------------------------------*/
1081 /*                                                                  */
1082 /* Name         - mono_arch_cpu_optimizazions                       */
1083 /*                                                                  */
1084 /* Function     - Returns the optimizations supported on this CPU   */
1085 /*                                                                  */
1086 /*------------------------------------------------------------------*/
1087
1088 guint32
1089 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
1090 {
1091         guint32 opts = 0;
1092
1093         /*----------------------------------------------------------*/
1094         /* No s390-specific optimizations yet                       */
1095         /*----------------------------------------------------------*/
1096         *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
1097 //      *exclude_mask = MONO_OPT_INLINE;
1098         return opts;
1099 }
1100
1101 /*========================= End of Function ========================*/
1102
1103 /*------------------------------------------------------------------*/
1104 /*                                                                  */
1105 /* Name         -                                                   */
1106 /*                                                                  */
1107 /* Function     -                                                   */
1108 /*                                                                  */
1109 /*------------------------------------------------------------------*/
1110
1111 static gboolean
1112 is_regsize_var (MonoType *t) {
1113         if (t->byref)
1114                 return TRUE;
1115         switch (mono_type_get_underlying_type (t)->type) {
1116         case MONO_TYPE_I4:
1117         case MONO_TYPE_U4:
1118         case MONO_TYPE_I:
1119         case MONO_TYPE_I8:
1120         case MONO_TYPE_U8:
1121         case MONO_TYPE_U:
1122         case MONO_TYPE_PTR:
1123         case MONO_TYPE_FNPTR:
1124                 return TRUE;
1125         case MONO_TYPE_OBJECT:
1126         case MONO_TYPE_STRING:
1127         case MONO_TYPE_CLASS:
1128         case MONO_TYPE_SZARRAY:
1129         case MONO_TYPE_ARRAY:
1130                 return FALSE;
1131         case MONO_TYPE_VALUETYPE:
1132                 if (t->data.klass->enumtype)
1133                         return is_regsize_var (t->data.klass->enum_basetype);
1134                 return FALSE;
1135         }
1136         return FALSE;
1137 }
1138
1139 /*========================= End of Function ========================*/
1140
1141 /*------------------------------------------------------------------*/
1142 /*                                                                  */
1143 /* Name         - mono_arch_get_allocatable_int_vars                */
1144 /*                                                                  */
1145 /* Function     -                                                   */
1146 /*                                                                  */
1147 /*------------------------------------------------------------------*/
1148
1149 GList *
1150 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
1151 {
1152         GList *vars = NULL;
1153         int i;
1154
1155         for (i = 0; i < cfg->num_varinfo; i++) {
1156                 MonoInst *ins = cfg->varinfo [i];
1157                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
1158
1159                 /* unused vars */
1160                 if (vmv->range.first_use.abs_pos >= vmv->range.last_use.abs_pos)
1161                         continue;
1162
1163                 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) ||
1164                     (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1165                         continue;
1166
1167                 /* we can only allocate 32 bit values */
1168                 if (is_regsize_var (ins->inst_vtype)) {
1169                         g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1170                         g_assert (i == vmv->idx);
1171                         vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
1172                 }
1173         }
1174
1175         return vars;
1176 }
1177
1178 /*========================= End of Function ========================*/
1179
1180 /*------------------------------------------------------------------*/
1181 /*                                                                  */
1182 /* Name         - mono_arch_global_int_regs                         */
1183 /*                                                                  */
1184 /* Function     - Return a list of usable integer registers.        */
1185 /*                                                                  */
1186 /*------------------------------------------------------------------*/
1187
1188 GList *
1189 mono_arch_get_global_int_regs (MonoCompile *cfg)
1190 {
1191         GList *regs = NULL;
1192         MonoMethodHeader *header;
1193         int i, top = 13;
1194
1195         header = mono_method_get_header (cfg->method);
1196         if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1197                 cfg->frame_reg = s390_r11;
1198
1199         for (i = 8; i < top; ++i) {
1200                 if (cfg->frame_reg != i)
1201                         regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
1202         }
1203
1204         return regs;
1205 }
1206
1207 /*========================= End of Function ========================*/
1208
1209 /*------------------------------------------------------------------*/
1210 /*                                                                  */
1211 /* Name         -  mono_arch_flush_icache                           */
1212 /*                                                                  */
1213 /* Function     -  Flush the CPU icache.                            */
1214 /*                                                                  */
1215 /*------------------------------------------------------------------*/
1216
1217 void
1218 mono_arch_flush_icache (guint8 *code, gint size)
1219 {
1220 }
1221
1222 /*========================= End of Function ========================*/
1223
1224 /*------------------------------------------------------------------*/
1225 /*                                                                  */
1226 /* Name         - add_general                                       */
1227 /*                                                                  */
1228 /* Function     - Determine code and stack size incremements for a  */
1229 /*                parameter.                                        */
1230 /*                                                                  */
1231 /*------------------------------------------------------------------*/
1232
1233 static void inline
1234 add_general (guint *gr, size_data *sz, ArgInfo *ainfo)
1235 {
1236         if (*gr > S390_LAST_ARG_REG) {
1237                 sz->stack_size  = S390_ALIGN(sz->stack_size, sizeof(long));
1238                 ainfo->offset   = sz->stack_size;
1239                 ainfo->reg      = STK_BASE;
1240                 ainfo->regtype  = RegTypeBase;
1241                 sz->stack_size += sizeof(long);
1242                 sz->local_size += sizeof(long);
1243                 sz->offStruct  += sizeof(long);
1244                 sz->code_size  += 12;
1245         } else {
1246                 ainfo->reg      = *gr;
1247                 sz->code_size  += 8;
1248         }
1249         (*gr) ++;
1250 }
1251
1252 /*========================= End of Function ========================*/
1253
1254 /*------------------------------------------------------------------*/
1255 /*                                                                  */
1256 /* Name         - add_stackParm                                     */
1257 /*                                                                  */
1258 /* Function     - Determine code and stack size incremements for a  */
1259 /*                parameter.                                        */
1260 /*                                                                  */
1261 /*------------------------------------------------------------------*/
1262
1263 static void inline
1264 add_stackParm (guint *gr, size_data *sz, ArgInfo *ainfo, gint size)
1265 {
1266         if (*gr > S390_LAST_ARG_REG) {
1267                 sz->stack_size  = S390_ALIGN(sz->stack_size, sizeof(long));
1268                 ainfo->reg      = STK_BASE;
1269                 sz->stack_size += sizeof(gpointer);
1270                 sz->offStruct  += sizeof(gpointer);
1271         } else {
1272                 ainfo->reg      = *gr;
1273         }
1274         (*gr) ++;
1275         ainfo->offset   = sz->stack_size;
1276         ainfo->offparm  = sz->offset;
1277         sz->offset      = S390_ALIGN(sz->offset+size, sizeof(long));
1278         ainfo->size     = size;
1279         ainfo->regtype  = RegTypeStructByAddr;
1280         ainfo->vtsize   = size;
1281         sz->parm_size  += size;
1282 }
1283
1284 /*========================= End of Function ========================*/
1285
1286 /*------------------------------------------------------------------*/
1287 /*                                                                  */
1288 /* Name         - add_float                                         */
1289 /*                                                                  */
1290 /* Function     - Determine code and stack size incremements for a  */
1291 /*                float parameter.                                  */
1292 /*                                                                  */
1293 /*------------------------------------------------------------------*/
1294
1295 static void inline
1296 add_float (guint *fr,  size_data *sz, ArgInfo *ainfo)
1297 {
1298         if ((*fr) <= S390_LAST_FPARG_REG) {
1299                 ainfo->regtype = RegTypeFP;
1300                 ainfo->reg     = *fr;
1301                 sz->code_size += 4;
1302                 (*fr) += 2;
1303         }
1304         else {
1305                 ainfo->offset   = sz->stack_size;
1306                 ainfo->reg      = STK_BASE;
1307                 ainfo->regtype  = RegTypeBase;
1308                 sz->code_size  += 4;
1309                 sz->stack_size += sizeof(double);
1310                 sz->local_size += sizeof(double);
1311                 sz->offStruct  += sizeof(double);
1312         }
1313 }
1314
1315 /*========================= End of Function ========================*/
1316
1317 /*------------------------------------------------------------------*/
1318 /*                                                                  */
1319 /* Name         - calculate_sizes                                   */
1320 /*                                                                  */
1321 /* Function     - Determine the amount of space required for code   */
1322 /*                and stack. In addition determine starting points  */
1323 /*                for stack-based parameters, and area for struct-  */
1324 /*                ures being returned on the stack.                 */
1325 /*                                                                  */
1326 /*------------------------------------------------------------------*/
1327
1328 static CallInfo *
1329 calculate_sizes (MonoMethodSignature *sig, size_data *sz,
1330                  gboolean string_ctor)
1331 {
1332         guint i, fr, gr, size;
1333         int nParm = sig->hasthis + sig->param_count;
1334         guint32 simpletype, align;
1335         CallInfo *cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1336
1337         fr                = 0;
1338         gr                = s390_r2;
1339         nParm             = 0;
1340         cinfo->struct_ret = 0;
1341         sz->retStruct     = 0;
1342         sz->offset        = 0;
1343         sz->offStruct     = S390_MINIMAL_STACK_SIZE;
1344         sz->stack_size    = S390_MINIMAL_STACK_SIZE;
1345         sz->code_size     = 0;
1346         sz->parm_size     = 0;
1347         sz->local_size    = 0;
1348
1349         /*----------------------------------------------------------*/
1350         /* We determine the size of the return code/stack in case we*/
1351         /* need to reserve a register to be used to address a stack */
1352         /* area that the callee will use.                           */
1353         /*----------------------------------------------------------*/
1354
1355         simpletype = mono_type_get_underlying_type (sig->ret)->type;
1356 enum_retvalue:
1357         switch (simpletype) {
1358                 case MONO_TYPE_BOOLEAN:
1359                 case MONO_TYPE_I1:
1360                 case MONO_TYPE_U1:
1361                 case MONO_TYPE_I2:
1362                 case MONO_TYPE_U2:
1363                 case MONO_TYPE_CHAR:
1364                 case MONO_TYPE_I4:
1365                 case MONO_TYPE_U4:
1366                 case MONO_TYPE_I:
1367                 case MONO_TYPE_U:
1368                 case MONO_TYPE_CLASS:
1369                 case MONO_TYPE_OBJECT:
1370                 case MONO_TYPE_SZARRAY:
1371                 case MONO_TYPE_ARRAY:
1372                 case MONO_TYPE_PTR:
1373                 case MONO_TYPE_FNPTR:
1374                 case MONO_TYPE_STRING:
1375                         cinfo->ret.reg = s390_r2;
1376                         sz->code_size += 4;
1377                         break;
1378                 case MONO_TYPE_R4:
1379                 case MONO_TYPE_R8:
1380                         cinfo->ret.reg = s390_f0;
1381                         sz->code_size += 4;
1382                         break;
1383                 case MONO_TYPE_I8:
1384                 case MONO_TYPE_U8:
1385                         cinfo->ret.reg = s390_r2;
1386                         sz->code_size += 4;
1387                         break;
1388                 case MONO_TYPE_GENERICINST:
1389                         if (!mono_type_generic_inst_is_valuetype (sig->ret)) {
1390                                 cinfo->ret.reg = s390_r2;
1391                                 sz->code_size += 4;
1392                                 break;
1393                         }
1394                         /* Fall through */
1395                 case MONO_TYPE_VALUETYPE: {
1396                         MonoClass *klass = mono_class_from_mono_type (sig->ret);
1397                         if (sig->ret->data.klass->enumtype) {
1398                                 simpletype = sig->ret->data.klass->enum_basetype->type;
1399                                 goto enum_retvalue;
1400                         }
1401                         if (sig->pinvoke)
1402                                 size = mono_class_native_size (klass, &align);
1403                         else
1404                                 size = mono_class_value_size (klass, &align);
1405
1406                         cinfo->ret.reg    = s390_r2;
1407                         cinfo->struct_ret = 1;
1408                         cinfo->ret.size   = size;
1409                         cinfo->ret.vtsize = size;
1410                         gr++;
1411                         break;
1412                 }
1413                 case MONO_TYPE_TYPEDBYREF:
1414                         size = sizeof (MonoTypedRef);
1415                         cinfo->ret.reg    = s390_r2;
1416                         cinfo->struct_ret = 1;
1417                         cinfo->ret.size   = size;
1418                         cinfo->ret.vtsize = size;
1419                         gr++;
1420                         break;
1421                 case MONO_TYPE_VOID:
1422                         break;
1423                 default:
1424                         g_error ("Can't handle as return value 0x%x", sig->ret->type);
1425         }
1426
1427         if (sig->hasthis) {
1428                 cinfo->args[nParm].size = sizeof(gpointer);
1429                 add_general (&gr, sz, cinfo->args+nParm);
1430                 nParm++;
1431         }
1432
1433         /*----------------------------------------------------------*/
1434         /* We determine the size of the parameter code and stack    */
1435         /* requirements by checking the types and sizes of the      */
1436         /* parameters.                                              */
1437         /*----------------------------------------------------------*/
1438
1439         for (i = 0; i < sig->param_count; ++i) {
1440                 /*--------------------------------------------------*/
1441                 /* Handle vararg type calls. All args are put on    */
1442                 /* the stack.                                       */
1443                 /*--------------------------------------------------*/
1444                 if ((sig->call_convention == MONO_CALL_VARARG) &&
1445                     (i == sig->sentinelpos)) {
1446                         gr = S390_LAST_ARG_REG + 1;
1447                         add_general (&gr, sz, &cinfo->sigCookie);
1448                 }
1449
1450                 if (sig->params [i]->byref) {
1451                         add_general (&gr, sz, cinfo->args+nParm);
1452                         cinfo->args[nParm].size = sizeof(gpointer);
1453                         nParm++;
1454                         continue;
1455                 }
1456
1457                 simpletype = mono_type_get_underlying_type(sig->params [i])->type;
1458                 cinfo->args[nParm].type = simpletype;
1459                 switch (simpletype) {
1460                 case MONO_TYPE_BOOLEAN:
1461                 case MONO_TYPE_I1:
1462                 case MONO_TYPE_U1:
1463                         cinfo->args[nParm].size = sizeof(char);
1464                         add_general (&gr, sz, cinfo->args+nParm);
1465                         nParm++;
1466                         break;
1467                 case MONO_TYPE_I2:
1468                 case MONO_TYPE_U2:
1469                 case MONO_TYPE_CHAR:
1470                         cinfo->args[nParm].size = sizeof(short);
1471                         add_general (&gr, sz, cinfo->args+nParm);
1472                         nParm++;
1473                         break;
1474                 case MONO_TYPE_I4:
1475                 case MONO_TYPE_U4:
1476                         cinfo->args[nParm].size = sizeof(int);
1477                         add_general (&gr, sz, cinfo->args+nParm);
1478                         nParm++;
1479                         break;
1480                 case MONO_TYPE_I:
1481                 case MONO_TYPE_U:
1482                 case MONO_TYPE_PTR:
1483                 case MONO_TYPE_FNPTR:
1484                 case MONO_TYPE_CLASS:
1485                 case MONO_TYPE_OBJECT:
1486                 case MONO_TYPE_STRING:
1487                 case MONO_TYPE_SZARRAY:
1488                 case MONO_TYPE_ARRAY:
1489                         cinfo->args[nParm].size = sizeof(gpointer);
1490                         add_general (&gr, sz, cinfo->args+nParm);
1491                         nParm++;
1492                         break;
1493                 case MONO_TYPE_I8:
1494                 case MONO_TYPE_U8:
1495                         cinfo->args[nParm].size = sizeof(long long);
1496                         add_general (&gr, sz, cinfo->args+nParm);
1497                         nParm++;
1498                         break;
1499                 case MONO_TYPE_R4:
1500                         cinfo->args[nParm].size = sizeof(float);
1501                         add_float (&fr, sz, cinfo->args+nParm);
1502                         nParm++;
1503                         break;
1504                 case MONO_TYPE_R8:
1505                         cinfo->args[nParm].size = sizeof(double);
1506                         add_float (&fr, sz, cinfo->args+nParm);
1507                         nParm++;
1508                         break;
1509                 case MONO_TYPE_GENERICINST:
1510                         if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
1511                                 cinfo->args[nParm].size = sizeof(gpointer);
1512                                 add_general (&gr, sz, cinfo->args+nParm);
1513                                 nParm++;
1514                                 break;
1515                         }
1516                         /* Fall through */
1517                 case MONO_TYPE_VALUETYPE: {
1518                         MonoMarshalType *info;
1519                         MonoClass *klass = mono_class_from_mono_type (sig->params [i]);
1520                         if (sig->pinvoke)
1521                                 size = mono_class_native_size (klass, &align);
1522                         else
1523                                 size = mono_class_value_size (klass, &align);
1524
1525                         info = mono_marshal_load_type_info (klass);
1526
1527                         if ((info->native_size == sizeof(float)) &&
1528                             (info->num_fields  == 1) &&
1529                             (info->fields[0].field->type->type == MONO_TYPE_R4)) {
1530                                 cinfo->args[nParm].size = sizeof(float);
1531                                 add_float(&fr, sz, cinfo->args+nParm);
1532                                 break;
1533                         }
1534
1535                         if ((info->native_size == sizeof(double)) &&
1536                             (info->num_fields  == 1) &&
1537                             (info->fields[0].field->type->type == MONO_TYPE_R8)) {
1538                                 cinfo->args[nParm].size = sizeof(double);
1539                                 add_float(&fr, sz, cinfo->args+nParm);
1540                                 break;
1541                         }
1542
1543                         cinfo->args[nParm].vtsize  = 0;
1544                         cinfo->args[nParm].size    = 0;
1545
1546                         switch (size) {
1547                                 /*----------------------------------*/
1548                                 /* On S/390, structures of size 1,  */
1549                                 /* 2, 4, and 8 bytes are passed in  */
1550                                 /* (a) register(s).                 */
1551                                 /*----------------------------------*/
1552                                 case 0:
1553                                 case 1:
1554                                 case 2:
1555                                 case 4:
1556                                 case 8:
1557                                         add_general(&gr, sz, cinfo->args+nParm);
1558                                         cinfo->args[nParm].size    = size;
1559                                         cinfo->args[nParm].regtype = RegTypeStructByVal;
1560                                         nParm++;
1561                                         sz->local_size            += sizeof(long);
1562                                         break;
1563                                 default:
1564                                         add_stackParm(&gr, sz, cinfo->args+nParm, size);
1565                                         nParm++;
1566                         }
1567                 }
1568                         break;
1569                 case MONO_TYPE_TYPEDBYREF: {
1570                         int size = sizeof (MonoTypedRef);
1571
1572                         cinfo->args[nParm].vtsize  = 0;
1573                         cinfo->args[nParm].size    = 0;
1574
1575                         switch (size) {
1576                                 /*----------------------------------*/
1577                                 /* On S/390, structures of size 1,  */
1578                                 /* 2, 4, and 8 bytes are passed in  */
1579                                 /* (a) register(s).                 */
1580                                 /*----------------------------------*/
1581                                 case 0:
1582                                 case 1:
1583                                 case 2:
1584                                 case 4:
1585                                 case 8:
1586                                         add_general(&gr, sz, cinfo->args+nParm);
1587                                         cinfo->args[nParm].size    = size;
1588                                         cinfo->args[nParm].regtype = RegTypeStructByVal;
1589                                         nParm++;
1590                                         sz->local_size            += sizeof(long);
1591                                         break;
1592                                 default:
1593                                         add_stackParm(&gr, sz, cinfo->args+nParm, size);
1594                                         nParm++;
1595                         }
1596                 }
1597                         break;
1598                 default:
1599                         g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1600                 }
1601         }
1602
1603         /*----------------------------------------------------------*/
1604         /* Handle the case where there are no implicit arguments    */
1605         /*----------------------------------------------------------*/
1606         if ((sig->call_convention == MONO_CALL_VARARG) &&
1607             (sig->param_count == sig->sentinelpos)) {
1608                 gr = S390_LAST_ARG_REG + 1;
1609                 add_general (&gr, sz, &cinfo->sigCookie);
1610         }
1611
1612         /*----------------------------------------------------------*/
1613         /* If we are passing a structure back then if it won't be   */
1614         /* in a register(s) then we make room at the end of the     */
1615         /* parameters that may have been placed on the stack        */
1616         /*----------------------------------------------------------*/
1617         if (cinfo->struct_ret) {
1618                 cinfo->ret.offset = sz->stack_size;
1619                 switch (cinfo->ret.size) {
1620                 case 0:
1621                 case 1:
1622                 case 2:
1623                 case 4:
1624                 case 8:
1625                         break;
1626                 default:
1627                         sz->stack_size   += S390_ALIGN(cinfo->ret.size, align);
1628                 }
1629         }
1630
1631         cinfo->lastgr   = gr;
1632         sz->stack_size  = sz->stack_size + sz->local_size + sz->parm_size +
1633                           sz->offset;
1634         sz->stack_size  = S390_ALIGN(sz->stack_size, sizeof(long));
1635
1636         return (cinfo);
1637 }
1638
1639 /*========================= End of Function ========================*/
1640
1641 /*------------------------------------------------------------------*/
1642 /*                                                                  */
1643 /* Name         - mono_arch_allocate_vars                           */
1644 /*                                                                  */
1645 /* Function     - Set var information according to the calling      */
1646 /*                convention for S/390. The local var stuff should  */
1647 /*                most likely be split in another method.           */
1648 /*                                                                  */
1649 /* Parameter    - @m - Compile unit.                                */
1650 /*                                                                  */
1651 /*------------------------------------------------------------------*/
1652
1653 void
1654 mono_arch_allocate_vars (MonoCompile *cfg)
1655 {
1656         MonoMethodSignature *sig;
1657         MonoMethodHeader *header;
1658         MonoInst *inst;
1659         CallInfo *cinfo;
1660         size_data sz;
1661         int iParm, iVar, offset, size, align, curinst;
1662         int frame_reg = STK_BASE;
1663         int sArg, eArg;
1664
1665         header  = mono_method_get_header (cfg->method);
1666
1667         cfg->flags |= MONO_CFG_HAS_SPILLUP;
1668
1669         /*---------------------------------------------------------*/
1670         /* We use the frame register also for any method that has  */
1671         /* filter clauses. This way, when the handlers are called, */
1672         /* the code will reference local variables using the frame */
1673         /* reg instead of the stack pointer: if we had to restore  */
1674         /* the stack pointer, we'd corrupt the method frames that  */
1675         /* are already on the stack (since filters get called      */
1676         /* before stack unwinding happens) when the filter code    */
1677         /* would call any method.                                  */
1678         /*---------------------------------------------------------*/
1679         if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1680                 frame_reg = s390_r11;
1681
1682         cfg->frame_reg = frame_reg;
1683
1684         if (frame_reg != STK_BASE)
1685                 cfg->used_int_regs |= 1 << frame_reg;
1686
1687         sig     = mono_method_signature (cfg->method);
1688
1689         cinfo   = calculate_sizes (sig, &sz, sig->pinvoke);
1690
1691         if (cinfo->struct_ret) {
1692                 cfg->ret->opcode = OP_REGVAR;
1693                 cfg->ret->inst_c0 = s390_r2;
1694         } else {
1695                 switch (mono_type_get_underlying_type (sig->ret)->type) {
1696                 case MONO_TYPE_VOID:
1697                         break;
1698                 default:
1699                         cfg->ret->opcode = OP_REGVAR;
1700                         cfg->ret->dreg   = s390_r2;
1701                         break;
1702                 }
1703         }
1704
1705         /*--------------------------------------------------------------*/
1706         /* local vars are at a positive offset from the stack pointer   */
1707         /* also note that if the function uses alloca, we use s390_r11  */
1708         /* to point at the local variables.                             */
1709         /* add parameter area size for called functions                 */
1710         /*--------------------------------------------------------------*/
1711         offset          = (cfg->param_area + S390_MINIMAL_STACK_SIZE);
1712         cfg->sig_cookie = 0;
1713
1714         if (cinfo->struct_ret) {
1715                 inst               = cfg->ret;
1716                 offset             = S390_ALIGN(offset, sizeof(gpointer));
1717                 inst->inst_offset  = offset;
1718                 inst->opcode       = OP_REGOFFSET;
1719                 inst->inst_basereg = frame_reg;
1720                 offset            += sizeof(gpointer);
1721                 if ((sig->call_convention == MONO_CALL_VARARG) &&
1722                     (!retFitsInReg (cinfo->ret.size)))
1723                         cfg->sig_cookie += cinfo->ret.size;
1724         }
1725
1726         if (sig->hasthis) {
1727                 inst = cfg->varinfo [0];
1728                 if (inst->opcode != OP_REGVAR) {
1729                         inst->opcode       = OP_REGOFFSET;
1730                         inst->inst_basereg = frame_reg;
1731                         offset             = S390_ALIGN(offset, sizeof(gpointer));
1732                         inst->inst_offset  = offset;
1733                         offset            += sizeof (gpointer);
1734                 }
1735                 curinst = sArg = 1;
1736         } else {
1737                 curinst = sArg = 0;
1738         }
1739
1740         eArg = sig->param_count + sArg;
1741
1742         if (sig->call_convention == MONO_CALL_VARARG)
1743                 cfg->sig_cookie += S390_MINIMAL_STACK_SIZE;
1744
1745         for (iParm = sArg; iParm < eArg; ++iParm) {
1746                 inst = cfg->varinfo [curinst];
1747                 if (inst->opcode != OP_REGVAR) {
1748                         switch (cinfo->args[iParm].regtype) {
1749                                 case RegTypeStructByAddr :
1750                                 if (cinfo->args[iParm].reg == STK_BASE) {
1751                                         inst->opcode       = OP_S390_LOADARG;
1752                                         inst->inst_basereg = frame_reg;
1753                                         offset             = S390_ALIGN(offset, sizeof(long));
1754                                         inst->inst_offset  = offset;
1755                                         size               = abs(cinfo->args[iParm].vtsize);
1756                                         inst->backend.arg_info     = cinfo->args[iParm].offset;
1757                                 } else {
1758                                         inst->opcode       = OP_S390_ARGREG;
1759                                         inst->inst_basereg = frame_reg;
1760                                         size               = sizeof(gpointer);
1761                                         offset             = S390_ALIGN(offset, size);
1762                                         inst->inst_offset  = offset;
1763                                         inst->backend.arg_info     = cinfo->args[iParm].offset;
1764                                 }
1765                                         break;
1766                                 case RegTypeStructByVal :
1767                                         inst->opcode       = OP_S390_ARGPTR;
1768                                         inst->inst_basereg = frame_reg;
1769                                         size               = cinfo->args[iParm].size;
1770                                         offset             = S390_ALIGN(offset, size);
1771                                         inst->inst_offset  = offset;
1772                                         inst->backend.arg_info     = cinfo->args[iParm].offset;
1773                                         break;
1774                                 default :
1775                                 if (cinfo->args[iParm].reg != STK_BASE) {
1776                                         inst->opcode       = OP_REGOFFSET;
1777                                         inst->inst_basereg = frame_reg;
1778                                         size               = (cinfo->args[iParm].size < 8
1779                                                               ? sizeof(int)
1780                                                               : sizeof(long));
1781                                         offset             = S390_ALIGN(offset, size);
1782                                         inst->inst_offset  = offset;
1783                                 } else {
1784                                         inst->opcode       = OP_S390_STKARG;
1785                                         inst->inst_basereg = frame_reg;
1786                                         size               = ((cinfo->args[iParm].size < 8)
1787                                                               ? 8 - cinfo->args[iParm].size
1788                                                               : 0);
1789                                         inst->inst_offset  = cinfo->args[iParm].offset +
1790                                                              size;
1791                                         inst->backend.arg_info       = 0;
1792                                         size               = sizeof(long);
1793                                 }
1794                         }
1795                         if ((sig->call_convention == MONO_CALL_VARARG) &&
1796                             (cinfo->args[iParm].regtype != RegTypeGeneral) &&
1797                             (iParm < sig->sentinelpos))
1798                                 cfg->sig_cookie += size;
1799
1800                         offset += size;
1801                 }
1802                 curinst++;
1803         }
1804
1805         curinst = cfg->locals_start;
1806         for (iVar = curinst; iVar < cfg->num_varinfo; ++iVar) {
1807                 inst = cfg->varinfo [iVar];
1808                 if ((inst->flags & MONO_INST_IS_DEAD) ||
1809                     (inst->opcode == OP_REGVAR))
1810                         continue;
1811
1812                 /*--------------------------------------------------*/
1813                 /* inst->backend.is_pinvoke indicates native sized value types, */
1814                 /* this is used by the pinvoke wrappers when they   */
1815                 /* call functions returning structure               */
1816                 /*--------------------------------------------------*/
1817                 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1818                         size = mono_class_native_size (mono_class_from_mono_type(inst->inst_vtype), &align);
1819                 else
1820                         size = mono_type_size (inst->inst_vtype, &align);
1821
1822                 offset             = S390_ALIGN(offset, align);
1823                 inst->inst_offset  = offset;
1824                 inst->opcode       = OP_REGOFFSET;
1825                 inst->inst_basereg = frame_reg;
1826                 offset            += size;
1827                 DEBUG (g_print("allocating local %d to %ld, size: %d\n",
1828                                 iVar, inst->inst_offset, size));
1829         }
1830
1831         /*------------------------------------------------------*/
1832         /* Allow space for the trace method stack area if needed*/
1833         /*------------------------------------------------------*/
1834         if (mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method))
1835                 offset += S390_TRACE_STACK_SIZE;
1836
1837         /*------------------------------------------------------*/
1838         /* Reserve space to save LMF and caller saved registers */
1839         /*------------------------------------------------------*/
1840         if (cfg->method->save_lmf)
1841                 offset += sizeof (MonoLMF);
1842
1843         /*------------------------------------------------------*/
1844         /* align the offset                                     */
1845         /*------------------------------------------------------*/
1846         cfg->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1847
1848 }
1849
1850 /*========================= End of Function ========================*/
1851
1852 /*------------------------------------------------------------------*/
1853 /*                                                                  */
1854 /* Name         - mono_arch_call_opcode                             */
1855 /*                                                                  */
1856 /* Function     - Take the arguments and generate the arch-specific */
1857 /*                instructions to properly call the function. This  */
1858 /*                includes pushing, moving argments to the correct  */
1859 /*                etc.                                              */
1860 /*                                                                  */
1861 /*------------------------------------------------------------------*/
1862
1863 MonoCallInst*
1864 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb,
1865                        MonoCallInst *call, int is_virtual) {
1866         MonoInst *in;
1867         MonoCallArgParm *arg;
1868         MonoMethodSignature *sig;
1869         int i, n, lParamArea;
1870         CallInfo *cinfo;
1871         ArgInfo *ainfo;
1872         size_data sz;
1873
1874         sig = call->signature;
1875         n = sig->param_count + sig->hasthis;
1876         DEBUG (g_print ("Call requires: %d parameters\n",n));
1877
1878         cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1879
1880         call->stack_usage = MAX(sz.stack_size, call->stack_usage);
1881         lParamArea        = MAX((call->stack_usage - S390_MINIMAL_STACK_SIZE - sz.parm_size), 0);
1882         cfg->param_area   = MAX (((signed) cfg->param_area), lParamArea);
1883         cfg->flags       |= MONO_CFG_HAS_CALLS;
1884
1885         if (cinfo->struct_ret)
1886                 call->used_iregs |= 1 << cinfo->ret.reg;
1887
1888         for (i = 0; i < n; ++i) {
1889                 ainfo = cinfo->args + i;
1890
1891                 if (!(sig->pinvoke) &&
1892                     (sig->call_convention == MONO_CALL_VARARG) &&
1893                     (i == sig->sentinelpos)) {
1894                         emit_sig_cookie (cfg, call, cinfo, ainfo->size);
1895                 }
1896
1897                 if (is_virtual && i == 0) {
1898                         /* the argument will be attached to the call instrucion */
1899                         in = call->args [i];
1900                         call->used_iregs |= 1 << ainfo->reg;
1901                 } else {
1902                         MONO_INST_NEW_CALL_ARG (cfg, arg, OP_OUTARG);
1903                         in                  = call->args [i];
1904                         arg->ins.cil_code   = in->cil_code;
1905                         arg->ins.inst_left  = in;
1906                         arg->ins.type       = in->type;
1907
1908                         /* prepend, we'll need to reverse them later */
1909                         arg->ins.next       = call->out_args;
1910                         call->out_args      = (MonoInst *) arg;
1911                         arg->ins.inst_right = (MonoInst *) call;
1912                         if (ainfo->regtype == RegTypeGeneral) {
1913                                 arg->ins.backend.reg3 = ainfo->reg;
1914                                 call->used_iregs |= 1 << ainfo->reg;
1915                         } else if (ainfo->regtype == RegTypeStructByAddr) {
1916                                 call->used_iregs |= 1 << ainfo->reg;
1917                                 arg->ins.sreg1    = ainfo->reg;
1918                                 arg->ins.opcode   = OP_OUTARG_VT;
1919                                 arg->size         = -ainfo->vtsize;
1920                                 arg->offset       = ainfo->offset;
1921                                 arg->offPrm       = ainfo->offparm + sz.offStruct;
1922                         } else if (ainfo->regtype == RegTypeStructByVal) {
1923                                 if (ainfo->reg != STK_BASE)
1924                                         call->used_iregs |= 1 << ainfo->reg;
1925                                 arg->ins.sreg1  = ainfo->reg;
1926                                 arg->ins.opcode = OP_OUTARG_VT;
1927                                 arg->size       = ainfo->size;
1928                                 arg->offset     = ainfo->offset;
1929                                 arg->offPrm     = ainfo->offparm + sz.offStruct;
1930                         } else if (ainfo->regtype == RegTypeBase) {
1931                                 arg->ins.opcode   = OP_OUTARG_MEMBASE;
1932                                 arg->ins.sreg1    = ainfo->reg;
1933                                 arg->size         = ainfo->size;
1934                                 arg->offset       = ainfo->offset;
1935                                 call->used_iregs |= 1 << ainfo->reg;
1936                         } else if (ainfo->regtype == RegTypeFP) {
1937                                 arg->ins.backend.reg3 = ainfo->reg;
1938                                 call->used_fregs |= 1 << ainfo->reg;
1939                                 if (ainfo->size == 4)
1940                                         arg->ins.opcode = OP_OUTARG_R4;
1941                                 else
1942                                         arg->ins.opcode = OP_OUTARG_R8;
1943                         } else {
1944                                 g_assert_not_reached ();
1945                         }
1946                 }
1947         }
1948
1949         /*
1950          * Handle the case where there are no implicit arguments
1951          */
1952         if (!(sig->pinvoke) &&
1953             (sig->call_convention == MONO_CALL_VARARG) &&
1954             (n == sig->sentinelpos)) {
1955                 emit_sig_cookie (cfg, call, cinfo, sizeof(MonoType *));
1956         }
1957
1958         /*
1959          * Reverse the call->out_args list.
1960          */
1961         {
1962                 MonoInst *prev = NULL, *list = call->out_args, *next;
1963                 while (list) {
1964                         next = list->next;
1965                         list->next = prev;
1966                         prev = list;
1967                         list = next;
1968                 }
1969                 call->out_args = prev;
1970         }
1971
1972         g_free (cinfo);
1973         return call;
1974 }
1975
1976 /*========================= End of Function ========================*/
1977
1978 /*------------------------------------------------------------------*/
1979 /*                                                                  */
1980 /* Name         - emit_sig_cookie.                                  */
1981 /*                                                                  */
1982 /* Function     - For variable length parameter lists construct a   */
1983 /*                signature cookie and emit it.                     */
1984 /*                                                                  */
1985 /*------------------------------------------------------------------*/
1986
1987 static void
1988 emit_sig_cookie (MonoCompile *cfg, MonoCallInst *call,
1989                  CallInfo *cinfo, int argSize)
1990 {
1991         MonoCallArgParm *arg;
1992         MonoMethodSignature *tmpSig;
1993         MonoInst *sigArg;
1994
1995         cfg->disable_aot = TRUE;
1996
1997         /*----------------------------------------------------------*/
1998         /* mono_ArgIterator_Setup assumes the signature cookie is   */
1999         /* passed first and all the arguments which were before it  */
2000         /* passed on the stack after the signature. So compensate   */
2001         /* by passing a different signature.                        */
2002         /*----------------------------------------------------------*/
2003         tmpSig = mono_metadata_signature_dup (call->signature);
2004         tmpSig->param_count -= call->signature->sentinelpos;
2005         tmpSig->sentinelpos  = 0;
2006         if (tmpSig->param_count > 0)
2007                 memcpy (tmpSig->params,
2008                         call->signature->params + call->signature->sentinelpos,
2009                         tmpSig->param_count * sizeof(MonoType *));
2010
2011         MONO_INST_NEW (cfg, sigArg, OP_ICONST);
2012         sigArg->inst_p0 = tmpSig;
2013
2014         MONO_INST_NEW_CALL_ARG (cfg, arg, OP_OUTARG_MEMBASE);
2015         arg->ins.inst_left   = sigArg;
2016         arg->ins.inst_right  = (MonoInst *) call;
2017         arg->size            = argSize;
2018         arg->offset          = cinfo->sigCookie.offset;
2019
2020         /* prepend, we'll need to reverse them later */
2021         arg->ins.next       = call->out_args;
2022         call->out_args      = (MonoInst *) arg;
2023 }
2024
2025 /*========================= End of Function ========================*/
2026
2027 /*------------------------------------------------------------------*/
2028 /*                                                                  */
2029 /* Name         - mono_arch_instrument_mem_needs                    */
2030 /*                                                                  */
2031 /* Function     - Allow tracing to work with this interface (with   */
2032 /*                an optional argument).                            */
2033 /*                                                                  */
2034 /*------------------------------------------------------------------*/
2035
2036 void
2037 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
2038 {
2039         /* no stack room needed now (may be needed for FASTCALL-trace support) */
2040         *stack = 0;
2041         /* split prolog-epilog requirements? */
2042         *code = 50; /* max bytes needed: check this number */
2043 }
2044
2045 /*========================= End of Function ========================*/
2046
2047 /*------------------------------------------------------------------*/
2048 /*                                                                  */
2049 /* Name         - mono_arch_instrument_prolog                       */
2050 /*                                                                  */
2051 /* Function     - Create an "instrumented" prolog.                  */
2052 /*                                                                  */
2053 /*------------------------------------------------------------------*/
2054
2055 void*
2056 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
2057                              gboolean enable_arguments)
2058 {
2059         guchar  *code = p;
2060         int     parmOffset,
2061                 fpOffset,
2062                 baseReg;
2063
2064         parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
2065         if (cfg->method->save_lmf)
2066                 parmOffset -= sizeof(MonoLMF);
2067         fpOffset   = parmOffset + (5*sizeof(gpointer));
2068         if ((!has_ld) && (fpOffset > 4096)) {
2069                 s390_lgr (code, s390_r12, STK_BASE);
2070                 baseReg = s390_r12;
2071                 while (fpOffset > 4096) {
2072                         s390_aghi (code, baseReg, 4096);
2073                         fpOffset   -= 4096;
2074                         parmOffset -= 4096;
2075                 }
2076         } else {
2077                 baseReg = STK_BASE;
2078         }
2079
2080         s390_stmg (code, s390_r2, s390_r6, STK_BASE, parmOffset);
2081         if (has_ld) {
2082                 s390_stdy (code, s390_f0, 0, STK_BASE, fpOffset);
2083                 s390_stdy (code, s390_f2, 0, STK_BASE, fpOffset+sizeof(gdouble));
2084                 s390_stdy (code, s390_f4, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
2085                 s390_stdy (code, s390_f6, 0, STK_BASE, fpOffset+3*sizeof(gdouble));
2086         } else {
2087                 s390_std  (code, s390_f0, 0, baseReg, fpOffset);
2088                 s390_std  (code, s390_f2, 0, baseReg, fpOffset+sizeof(gdouble));
2089                 s390_std  (code, s390_f4, 0, baseReg, fpOffset+2*sizeof(gdouble));
2090                 s390_std  (code, s390_f6, 0, baseReg, fpOffset+3*sizeof(gdouble));
2091         }
2092         s390_basr (code, s390_r13, 0);
2093         s390_j    (code, 10);
2094         s390_llong(code, cfg->method);
2095         s390_llong(code, func);
2096         s390_lg   (code, s390_r2, 0, s390_r13, 4);
2097         if (has_ld)
2098                 s390_lay  (code, s390_r3, 0, STK_BASE, parmOffset);
2099         else
2100                 s390_la   (code, s390_r3, 0, baseReg, parmOffset);
2101         s390_lgr  (code, s390_r4, STK_BASE);
2102         s390_aghi (code, s390_r4, cfg->stack_usage);
2103         s390_lg   (code, s390_r1, 0, s390_r13, 12);
2104         s390_basr (code, s390_r14, s390_r1);
2105         if (has_ld) {
2106                 s390_ldy  (code, s390_f6, 0, STK_BASE, fpOffset+3*sizeof(gdouble));
2107                 s390_ldy  (code, s390_f4, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
2108                 s390_ldy  (code, s390_f2, 0, STK_BASE, fpOffset+sizeof(gdouble));
2109                 s390_ldy  (code, s390_f0, 0, STK_BASE, fpOffset);
2110         } else {
2111                 s390_ld   (code, s390_f6, 0, baseReg, fpOffset+3*sizeof(gdouble));
2112                 s390_ld   (code, s390_f4, 0, baseReg, fpOffset+2*sizeof(gdouble));
2113                 s390_ld   (code, s390_f2, 0, baseReg, fpOffset+sizeof(gdouble));
2114                 s390_ld   (code, s390_f0, 0, baseReg, fpOffset);
2115         }
2116         s390_lmg  (code, s390_r2, s390_r6, STK_BASE, parmOffset);
2117
2118         return code;
2119 }
2120
2121 /*========================= End of Function ========================*/
2122
2123 /*------------------------------------------------------------------*/
2124 /*                                                                  */
2125 /* Name         - mono_arch_instrument_epilog                       */
2126 /*                                                                  */
2127 /* Function     - Create an epilog that will handle the returned    */
2128 /*                values used in instrumentation.                   */
2129 /*                                                                  */
2130 /*------------------------------------------------------------------*/
2131
2132 void*
2133 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
2134 {
2135         guchar     *code = p;
2136         int        save_mode = SAVE_NONE,
2137                    saveOffset;
2138         MonoMethod *method = cfg->method;
2139         int        rtype = mono_type_get_underlying_type (mono_method_signature (method)->ret)->type;
2140
2141         saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
2142         if (method->save_lmf)
2143                 saveOffset -= sizeof(MonoLMF);
2144
2145 handle_enum:
2146         switch (rtype) {
2147         case MONO_TYPE_VOID:
2148                 /* special case string .ctor icall */
2149                 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
2150                         save_mode = SAVE_ONE;
2151                 else
2152                         save_mode = SAVE_NONE;
2153                 break;
2154         case MONO_TYPE_I8:
2155         case MONO_TYPE_U8:
2156                 save_mode = SAVE_ONE;
2157                 break;
2158         case MONO_TYPE_R4:
2159                 save_mode = SAVE_R4;
2160                 break;
2161         case MONO_TYPE_R8:
2162                 save_mode = SAVE_R8;
2163                 break;
2164         case MONO_TYPE_VALUETYPE:
2165                 if (mono_method_signature (method)->ret->data.klass->enumtype) {
2166                         rtype = mono_method_signature (method)->ret->data.klass->enum_basetype->type;
2167                         goto handle_enum;
2168                 }
2169                 save_mode = SAVE_STRUCT;
2170                 break;
2171         default:
2172                 save_mode = SAVE_ONE;
2173                 break;
2174         }
2175
2176         switch (save_mode) {
2177         case SAVE_ONE:
2178                 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2179                 if (enable_arguments) {
2180                         s390_lgr (code, s390_r3, s390_r2);
2181                 }
2182                 break;
2183         case SAVE_R4:
2184                 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2185                 if (enable_arguments) {
2186                         s390_ldebr (code, s390_f0, s390_f0);
2187                 }
2188                 break;
2189         case SAVE_R8:
2190                 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2191                 break;
2192         case SAVE_STRUCT:
2193                 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2194                 if (enable_arguments) {
2195                         s390_lg (code, s390_r3, 0, cfg->frame_reg,
2196                                  S390_MINIMAL_STACK_SIZE+cfg->param_area);
2197                 }
2198                 break;
2199         case SAVE_NONE:
2200         default:
2201                 break;
2202         }
2203
2204         s390_basr (code, s390_r13, 0);
2205         s390_j    (code, 10);
2206         s390_llong(code, cfg->method);
2207         s390_llong(code, func);
2208         s390_lg   (code, s390_r2, 0, s390_r13, 4);
2209         s390_lg   (code, s390_r1, 0, s390_r13, 12);
2210         s390_basr (code, s390_r14, s390_r1);
2211
2212         switch (save_mode) {
2213         case SAVE_ONE:
2214                 s390_lg  (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2215                 break;
2216         case SAVE_R4:
2217         case SAVE_R8:
2218                 s390_ld  (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2219                 break;
2220         case SAVE_STRUCT:
2221                 s390_lg  (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2222                 break;
2223         case SAVE_NONE:
2224         default:
2225                 break;
2226         }
2227
2228         return code;
2229 }
2230
2231 /*========================= End of Function ========================*/
2232
2233 /*------------------------------------------------------------------*/
2234 /*                                                                  */
2235 /* Name         - peephole_pass                                     */
2236 /*                                                                  */
2237 /* Function     - Form a peephole pass at the code looking for      */
2238 /*                simple optimizations.                             */
2239 /*                                                                  */
2240 /*------------------------------------------------------------------*/
2241
2242 static void
2243 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
2244 {
2245         MonoInst *ins, *last_ins = NULL;
2246         ins = bb->code;
2247
2248         while (ins) {
2249
2250                 switch (ins->opcode) {
2251                 case OP_MUL_IMM:
2252                         /* remove unnecessary multiplication with 1 */
2253                         if (ins->inst_imm == 1) {
2254                                 if (ins->dreg != ins->sreg1) {
2255                                         ins->opcode = OP_MOVE;
2256                                 } else {
2257                                         last_ins->next = ins->next;
2258                                         ins = ins->next;
2259                                         continue;
2260                                 }
2261                         }
2262                         break;
2263                 case OP_LOAD_MEMBASE:
2264                 case OP_LOADI4_MEMBASE:
2265                         /*
2266                          * OP_STORE_MEMBASE_REG reg, offset(basereg)
2267                          * OP_LOAD_MEMBASE offset(basereg), reg
2268                          */
2269                         if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
2270                                          || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
2271                             ins->inst_basereg == last_ins->inst_destbasereg &&
2272                             ins->inst_offset == last_ins->inst_offset) {
2273                                 if (ins->dreg == last_ins->sreg1) {
2274                                         last_ins->next = ins->next;
2275                                         ins = ins->next;
2276                                         continue;
2277                                 } else {
2278                                         ins->opcode = OP_MOVE;
2279                                         ins->sreg1 = last_ins->sreg1;
2280                                 }
2281
2282                         /*
2283                          * Note: reg1 must be different from the basereg in the second load
2284                          * OP_LOAD_MEMBASE offset(basereg), reg1
2285                          * OP_LOAD_MEMBASE offset(basereg), reg2
2286                          * -->
2287                          * OP_LOAD_MEMBASE offset(basereg), reg1
2288                          * OP_MOVE reg1, reg2
2289                          */
2290                         } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
2291                                            || last_ins->opcode == OP_LOAD_MEMBASE) &&
2292                               ins->inst_basereg != last_ins->dreg &&
2293                               ins->inst_basereg == last_ins->inst_basereg &&
2294                               ins->inst_offset == last_ins->inst_offset) {
2295
2296                                 if (ins->dreg == last_ins->dreg) {
2297                                         last_ins->next = ins->next;
2298                                         ins = ins->next;
2299                                         continue;
2300                                 } else {
2301                                         ins->opcode = OP_MOVE;
2302                                         ins->sreg1 = last_ins->dreg;
2303                                 }
2304
2305                         }
2306                         break;
2307                 case OP_LOADU1_MEMBASE:
2308                 case OP_LOADI1_MEMBASE:
2309                         if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
2310                                         ins->inst_basereg == last_ins->inst_destbasereg &&
2311                                         ins->inst_offset == last_ins->inst_offset) {
2312                                 if (ins->dreg == last_ins->sreg1) {
2313                                         last_ins->next = ins->next;
2314                                         ins = ins->next;
2315                                         continue;
2316                                 } else {
2317                                         ins->opcode = OP_MOVE;
2318                                         ins->sreg1 = last_ins->sreg1;
2319                                 }
2320                         }
2321                         break;
2322                 case OP_LOADU2_MEMBASE:
2323                 case OP_LOADI2_MEMBASE:
2324                         if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
2325                                         ins->inst_basereg == last_ins->inst_destbasereg &&
2326                                         ins->inst_offset == last_ins->inst_offset) {
2327                                 if (ins->dreg == last_ins->sreg1) {
2328                                         last_ins->next = ins->next;
2329                                         ins = ins->next;
2330                                         continue;
2331                                 } else {
2332                                         ins->opcode = OP_MOVE;
2333                                         ins->sreg1 = last_ins->sreg1;
2334                                 }
2335                         }
2336                         break;
2337                 case CEE_CONV_I4:
2338                 case CEE_CONV_U4:
2339                 case OP_MOVE:
2340                         /*
2341                          * OP_MOVE reg, reg
2342                          */
2343                         if (ins->dreg == ins->sreg1) {
2344                                 if (last_ins)
2345                                         last_ins->next = ins->next;
2346                                 ins = ins->next;
2347                                 continue;
2348                         }
2349                         /*
2350                          * OP_MOVE sreg, dreg
2351                          * OP_MOVE dreg, sreg
2352                          */
2353                         if (last_ins && last_ins->opcode == OP_MOVE &&
2354                             ins->sreg1 == last_ins->dreg &&
2355                             ins->dreg == last_ins->sreg1) {
2356                                 last_ins->next = ins->next;
2357                                 ins = ins->next;
2358                                 continue;
2359                         }
2360                         break;
2361                 }
2362                 last_ins = ins;
2363                 ins = ins->next;
2364         }
2365         bb->last_ins = last_ins;
2366 }
2367
2368 /*========================= End of Function ========================*/
2369
2370 /*------------------------------------------------------------------*/
2371 /*                                                                  */
2372 /* Name         - mono_arch_local_regalloc.                         */
2373 /*                                                                  */
2374 /* Function     - We first scan the list of instructions and we     */
2375 /*                save the liveness information of each register    */
2376 /*                (when the register is first used, when its value  */
2377 /*                is set etc.). We also reverse the list of instr-  */
2378 /*                uctions (in the InstList list) because assigning  */
2379 /*                registers backwards allows for more tricks to be  */
2380 /*                used.                                             */
2381 /*                                                                  */
2382 /*------------------------------------------------------------------*/
2383
2384 void
2385 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2386 {
2387         mono_local_regalloc(cfg, bb);
2388 }
2389
2390 /*========================= End of Function ========================*/
2391
2392 /*------------------------------------------------------------------*/
2393 /*                                                                  */
2394 /* Name         - emit_float_to_int                                 */
2395 /*                                                                  */
2396 /* Function     - Create instructions which will convert a floating */
2397 /*                point value to integer.                           */
2398 /*                                                                  */
2399 /*------------------------------------------------------------------*/
2400
2401 static guchar*
2402 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2403 {
2404         /* sreg is a float, dreg is an integer reg. */
2405         if (is_signed) {
2406                 s390_cfdbr (code, dreg, 5, sreg);
2407                 switch (size) {
2408                         case 1:
2409                                 s390_lghi (code, s390_r0, 0);
2410                                 s390_lghi (code, s390_r13, 0xff);
2411                                 s390_ltgr (code, dreg, dreg);
2412                                 s390_jnl  (code, 4);
2413                                 s390_lghi (code, s390_r0, 0x80);
2414                                 s390_ngr  (code, dreg, s390_r13);
2415                                 s390_ogr  (code, dreg, s390_r0);
2416                                 break;
2417                 }
2418         } else {
2419                 short *o[1];
2420                 s390_basr   (code, s390_r13, 0);
2421                 s390_j      (code, 10);
2422                 s390_llong  (code, 0x41e0000000000000);
2423                 s390_llong  (code, 0x41f0000000000000);
2424                 s390_ldr    (code, s390_f15, sreg);
2425                 s390_cdb    (code, s390_f15, 0, s390_r13, 4);
2426                 s390_jl     (code, 0); CODEPTR (code, o[0]);
2427                 s390_sdb    (code, s390_f15, 0, s390_r13, 12);
2428                 s390_cfdbr  (code, dreg, 7, s390_f15);
2429                 s390_j      (code, 4);
2430                 PTRSLOT (code, o[0]);
2431                 s390_cfdbr  (code, dreg, 5, sreg);
2432                 switch (size) {
2433                         case 1:
2434                                 s390_lghi (code, s390_r0, 0xff);
2435                                 s390_ngr  (code, dreg, s390_r0);
2436                                 break;
2437                         case 2:
2438                                 s390_lghi (code, s390_r0, -1);
2439                                 s390_srlg (code, s390_r0, s390_r0, 0, 16);
2440                                 s390_ngr  (code, dreg, s390_r0);
2441                                 break;
2442                 }
2443         }
2444         return code;
2445 }
2446
2447 /*========================= End of Function ========================*/
2448
2449 /*------------------------------------------------------------------*/
2450 /*                                                                  */
2451 /* Name         - mono_arch_output_basic_block                      */
2452 /*                                                                  */
2453 /* Function     - Perform the "real" work of emitting instructions  */
2454 /*                that will do the work of in the basic block.      */
2455 /*                                                                  */
2456 /*------------------------------------------------------------------*/
2457
2458 void
2459 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
2460 {
2461         MonoInst *ins;
2462         MonoCallInst *call;
2463         guint offset;
2464         guint8 *code = cfg->native_code + cfg->code_len;
2465         MonoInst *last_ins = NULL;
2466         guint last_offset = 0;
2467         int max_len, cpos, src2;
2468
2469         if (cfg->opt & MONO_OPT_PEEPHOLE)
2470                 peephole_pass (cfg, bb);
2471
2472         /* we don't align basic blocks of loops on s390 */
2473
2474         if (cfg->verbose_level > 2)
2475                 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
2476
2477         cpos = bb->max_offset;
2478
2479         if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
2480                 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
2481                 //g_assert (!mono_compile_aot);
2482                 //cpos += 6;
2483                 //if (bb->cil_code)
2484                 //      cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
2485                 /* this is not thread save, but good enough */
2486                 /* fixme: howto handle overflows? */
2487                 //x86_inc_mem (code, &cov->data [bb->dfn].count);
2488         }
2489
2490         ins = bb->code;
2491         while (ins) {
2492                 offset = code - cfg->native_code;
2493
2494                 max_len = ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
2495
2496                 if (offset > (cfg->code_size - max_len - 16)) {
2497                         cfg->code_size *= 2;
2498                         cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
2499                         code = cfg->native_code + offset;
2500                 }
2501
2502                 mono_debug_record_line_number (cfg, ins, offset);
2503
2504                 switch (ins->opcode) {
2505                 case OP_STOREI1_MEMBASE_IMM: {
2506                         s390_lghi (code, s390_r0, ins->inst_imm);
2507                         S390_LONG (code, stcy, stc, s390_r0, 0,
2508                                    ins->inst_destbasereg, ins->inst_offset);
2509                 }
2510                         break;
2511                 case OP_STOREI2_MEMBASE_IMM: {
2512                         s390_lghi (code, s390_r0, ins->inst_imm);
2513                         S390_LONG (code, sthy, sth, s390_r0, 0,
2514                                    ins->inst_destbasereg, ins->inst_offset);
2515                 }
2516                         break;
2517                 case OP_STOREI4_MEMBASE_IMM: {
2518                         if (s390_is_imm16(ins->inst_imm)) {
2519                                 s390_lghi (code, s390_r0, ins->inst_imm);
2520                         } else {
2521                                 s390_basr (code, s390_r13, 0);
2522                                 s390_j    (code, 6);
2523                                 s390_llong(code, ins->inst_imm);
2524                                 s390_lg   (code, s390_r0, 0, s390_r13, 4);
2525                         }
2526                         S390_LONG (code, sty, st, s390_r0, 0,
2527                                    ins->inst_destbasereg, ins->inst_offset);
2528                 }
2529                         break;
2530                 case OP_STORE_MEMBASE_IMM:
2531                 case OP_STOREI8_MEMBASE_IMM: {
2532                         if (s390_is_imm16(ins->inst_imm)) {
2533                                 s390_lghi (code, s390_r0, ins->inst_imm);
2534                         } else {
2535                                 s390_basr (code, s390_r13, 0);
2536                                 s390_j    (code, 6);
2537                                 s390_llong(code, ins->inst_imm);
2538                                 s390_lg   (code, s390_r0, 0, s390_r13, 4);
2539                         }
2540                         S390_LONG (code, stg, stg, s390_r0, 0,
2541                                    ins->inst_destbasereg, ins->inst_offset);
2542                 }
2543                         break;
2544                 case OP_STOREI1_MEMBASE_REG: {
2545                         S390_LONG (code, stcy, stc, ins->sreg1, 0,
2546                                    ins->inst_destbasereg, ins->inst_offset);
2547                 }
2548                         break;
2549                 case OP_STOREI2_MEMBASE_REG: {
2550                         S390_LONG (code, sthy, sth, ins->sreg1, 0,
2551                                    ins->inst_destbasereg, ins->inst_offset);
2552                 }
2553                         break;
2554                 case OP_STOREI4_MEMBASE_REG: {
2555                         S390_LONG (code, sty, st, ins->sreg1, 0,
2556                                    ins->inst_destbasereg, ins->inst_offset);
2557                 }
2558                         break;
2559                 case OP_STORE_MEMBASE_REG:
2560                 case OP_STOREI8_MEMBASE_REG: {
2561                         S390_LONG (code, stg, stg, ins->sreg1, 0,
2562                                    ins->inst_destbasereg, ins->inst_offset);
2563                 }
2564                         break;
2565                 case CEE_LDIND_I:
2566                 case CEE_LDIND_I4: {
2567                         s390_basr (code, s390_r13, 0);
2568                         s390_j    (code, 6);
2569                         s390_llong(code, ins->inst_p0);
2570                         s390_lg   (code, s390_r13, 0, s390_r13, 4);
2571                         s390_lgf  (code, ins->dreg, 0, s390_r13, 0);
2572                 }
2573                         break;
2574                 case CEE_LDIND_U4: {
2575                         s390_basr (code, s390_r13, 0);
2576                         s390_j    (code, 6);
2577                         s390_llong(code, ins->inst_p0);
2578                         s390_lg   (code, s390_r13, 0, s390_r13, 4);
2579                         s390_llgf (code, ins->dreg, 0, s390_r13, 0);
2580                 }
2581                         break;
2582                 case OP_LOADU4_MEM:
2583                         g_assert_not_reached ();
2584                         break;
2585                 case OP_LOAD_MEMBASE:
2586                 case OP_LOADI8_MEMBASE: {
2587                         S390_LONG (code, lg, lg, ins->dreg, 0,
2588                                    ins->inst_basereg, ins->inst_offset);
2589                 }
2590                         break;
2591                 case OP_LOADI4_MEMBASE: {
2592                         S390_LONG (code, lgf, lgf, ins->dreg, 0,
2593                                    ins->inst_basereg, ins->inst_offset);
2594                 }
2595                         break;
2596                 case OP_LOADU4_MEMBASE: {
2597                         S390_LONG (code, llgf, llgf, ins->dreg, 0,
2598                                    ins->inst_basereg, ins->inst_offset);
2599                 }
2600                         break;
2601                 case OP_LOADU1_MEMBASE: {
2602                         S390_LONG (code, llgc, llgc, ins->dreg, 0,
2603                                    ins->inst_basereg, ins->inst_offset);
2604                 }
2605                         break;
2606                 case OP_LOADI1_MEMBASE: {
2607                         S390_LONG (code, lgb, lgb, ins->dreg, 0,
2608                                    ins->inst_basereg, ins->inst_offset);
2609                 }
2610                         break;
2611                 case OP_LOADU2_MEMBASE: {
2612                         S390_LONG (code, llgh, llgh, ins->dreg, 0,
2613                                    ins->inst_basereg, ins->inst_offset);
2614                 }
2615                         break;
2616                 case OP_LOADI2_MEMBASE: {
2617                         S390_LONG (code, lgh, lgh, ins->dreg, 0,
2618                                    ins->inst_basereg, ins->inst_offset);
2619                 }
2620                         break;
2621                 case CEE_CONV_I1: {
2622                         s390_lghi  (code, s390_r0, 0x80);
2623                         if (ins->dreg != ins->sreg1) {
2624                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2625                         }
2626                         s390_ngr  (code, s390_r0, ins->sreg1);
2627                         s390_jz   (code, 9);
2628                         s390_lghi (code, s390_r13, -1);
2629                         s390_sllg (code, s390_r13, s390_r13, 0, 8);
2630                         s390_ogr  (code, ins->dreg, s390_r13);
2631                 }
2632                         break;
2633                 case CEE_CONV_I2: {
2634                         s390_lghi (code, s390_r0, 0x80);
2635                         s390_sllg (code, s390_r0, s390_r0, 0, 8);
2636                         if (ins->dreg != ins->sreg1) {
2637                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2638                         }
2639                         s390_ngr  (code, s390_r0, ins->sreg1);
2640                         s390_jz   (code, 9);
2641                         s390_lghi (code, s390_r13, -1);
2642                         s390_sllg (code, s390_r13, s390_r13, 0, 16);
2643                         s390_ogr  (code, ins->dreg, s390_r13);
2644                 }
2645                         break;
2646                 case CEE_CONV_U1: {
2647                         s390_lghi (code, s390_r0, 0xff);
2648                         if (ins->dreg != ins->sreg1) {
2649                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2650                         }
2651                         s390_ngr  (code, ins->dreg, s390_r0);
2652                 }
2653                         break;
2654                 case CEE_CONV_U2: {
2655                         s390_lghi (code, s390_r0, -1);
2656                         s390_sllg (code, s390_r0, s390_r0, 0, 16);
2657                         s390_srlg (code, s390_r0, s390_r0, 0, 16);
2658                         if (ins->dreg != ins->sreg1) {
2659                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2660                         }
2661                         s390_ngr  (code, ins->dreg, s390_r0);
2662                 }
2663                         break;
2664                 case OP_COMPARE:
2665                 case OP_LCOMPARE: {
2666                         if ((ins->next) &&
2667                             (opcode_to_cond(ins->next->opcode) >= CMP_LE_UN))
2668                                 s390_clgr (code, ins->sreg1, ins->sreg2);
2669                         else
2670                                 s390_cgr  (code, ins->sreg1, ins->sreg2);
2671                 }
2672                         break;
2673                 case OP_COMPARE_IMM: {
2674                         if (s390_is_imm16 (ins->inst_imm)) {
2675                                 s390_lghi (code, s390_r0, ins->inst_imm);
2676                                 if ((ins->next) &&
2677                                     (opcode_to_cond(ins->next->opcode) >= CMP_LE_UN))
2678                                         s390_clgr (code, ins->sreg1, s390_r0);
2679                                 else
2680                                         s390_cgr  (code, ins->sreg1, s390_r0);
2681                         }
2682                         else {
2683                                 s390_basr (code, s390_r13, 0);
2684                                 s390_j    (code, 6);
2685                                 s390_llong(code, ins->inst_imm);
2686                                 if ((ins->next) &&
2687                                     (opcode_to_cond(ins->next->opcode) >= CMP_LE_UN))
2688                                         s390_clg  (code, ins->sreg1, 0, s390_r13, 4);
2689                                 else
2690                                         s390_cg   (code, ins->sreg1, 0, s390_r13, 4);
2691                         }
2692                 }
2693                         break;
2694                 case OP_ICOMPARE: {
2695                         if ((ins->next) &&
2696                             (opcode_to_cond(ins->next->opcode) >= CMP_LE_UN))
2697                                 s390_clr  (code, ins->sreg1, ins->sreg2);
2698                         else
2699                                 s390_cr   (code, ins->sreg1, ins->sreg2);
2700                 }
2701                         break;
2702                 case OP_ICOMPARE_IMM: {
2703                         if (s390_is_imm16 (ins->inst_imm)) {
2704                                 s390_lghi (code, s390_r0, ins->inst_imm);
2705                                 if ((ins->next) &&
2706                                     (opcode_to_cond(ins->next->opcode) >= CMP_LE_UN))
2707                                         s390_clr  (code, ins->sreg1, s390_r0);
2708                                 else
2709                                         s390_cr   (code, ins->sreg1, s390_r0);
2710                         }
2711                         else {
2712                                 s390_basr (code, s390_r13, 0);
2713                                 s390_j    (code, 4);
2714                                 s390_word (code, ins->inst_imm);
2715                                 if ((ins->next) &&
2716                                     (opcode_to_cond(ins->next->opcode) >= CMP_LE_UN))
2717                                         s390_cl  (code, ins->sreg1, 0, s390_r13, 4);
2718                                 else
2719                                         s390_c   (code, ins->sreg1, 0, s390_r13, 4);
2720                         }
2721                 }
2722                         break;
2723                 case CEE_BREAK: {
2724                         s390_basr  (code, s390_r13, 0);
2725                         s390_j     (code, 6);
2726                         mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS,
2727                                              mono_arch_break);
2728                         s390_llong (code, mono_arch_break);
2729                         s390_lg    (code, s390_r14, 0, s390_r13, 4);
2730                         s390_basr  (code, s390_r14, s390_r14);
2731                 }
2732                         break;
2733                 case OP_ADDCC: {
2734                         CHECK_SRCDST_COM;
2735                         s390_algr  (code, ins->dreg, src2);
2736                 }
2737                         break;
2738                 case CEE_ADD: {
2739                         CHECK_SRCDST_COM;
2740                         s390_agr   (code, ins->dreg, src2);
2741                 }
2742                         break;
2743                 case OP_ADC: {
2744                         CHECK_SRCDST_COM;
2745                         s390_alcgr (code, ins->dreg, src2);
2746                 }
2747                         break;
2748                 case OP_ADD_IMM: {
2749                         if (ins->dreg != ins->sreg1) {
2750                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2751                         }
2752                         if (s390_is_imm16 (ins->inst_imm)) {
2753                                 s390_aghi (code, ins->dreg, ins->inst_imm);
2754                         } else {
2755                                 s390_basr (code, s390_r13, 0);
2756                                 s390_j    (code, 6);
2757                                 s390_llong(code, ins->inst_imm);
2758                                 s390_ag   (code, ins->dreg, 0, s390_r13, 4);
2759                         }
2760                 }
2761                         break;
2762                 case OP_ADC_IMM: {
2763                         if (ins->dreg != ins->sreg1) {
2764                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2765                         }
2766                         if (s390_is_imm16 (ins->inst_imm)) {
2767                                 s390_lghi  (code, s390_r0, ins->inst_imm);
2768                                 s390_alcgr (code, ins->dreg, s390_r0);
2769                         } else {
2770                                 s390_basr  (code, s390_r13, 0);
2771                                 s390_j     (code, 6);
2772                                 s390_llong (code, ins->inst_imm);
2773                                 s390_lg    (code, s390_r13, 0, s390_r13, 4);
2774                                 s390_alcgr (code, ins->dreg, s390_r13);
2775                         }
2776                 }
2777                         break;
2778                 case OP_LADD_OVF: {
2779                         CHECK_SRCDST_COM;
2780                         s390_agr   (code, ins->dreg, src2);
2781                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2782                 }
2783                         break;
2784                 case OP_LADD_OVF_UN: {
2785                         CHECK_SRCDST_COM;
2786                         s390_algr  (code, ins->dreg, src2);
2787                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
2788                 }
2789                         break;
2790                 case OP_ADD_OVF_CARRY: {
2791                         CHECK_SRCDST_COM;
2792                         s390_lghi  (code, s390_r0, 0);
2793                         s390_lgr   (code, s390_r1, s390_r0);
2794                         s390_alcgr (code, s390_r0, s390_r1);
2795                         s390_agr   (code, ins->dreg, src2);
2796                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2797                         s390_agr   (code, ins->dreg, s390_r0);
2798                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2799                 }
2800                         break;
2801                 case OP_ADD_OVF_UN_CARRY: {
2802                         CHECK_SRCDST_COM;
2803                         s390_alcgr (code, ins->dreg, src2);
2804                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
2805                 }
2806                         break;
2807                 case OP_SUBCC: {
2808                         CHECK_SRCDST_NCOM;
2809                         s390_slgr (code, ins->dreg, src2);
2810                 }
2811                         break;
2812                 case CEE_SUB: {
2813                         CHECK_SRCDST_NCOM;
2814                         s390_sgr  (code, ins->dreg, src2);
2815                 }
2816                         break;
2817                 case OP_SBB: {
2818                         CHECK_SRCDST_NCOM;
2819                         s390_slbgr(code, ins->dreg, src2);
2820                 }
2821                         break;
2822                 case OP_SUB_IMM: {
2823                         if (ins->dreg != ins->sreg1) {
2824                                 s390_lgr   (code, ins->dreg, ins->sreg1);
2825                         }
2826                         if (s390_is_imm16 (-ins->inst_imm)) {
2827                                 s390_lghi  (code, s390_r0, ins->inst_imm);
2828                                 s390_slgr  (code, ins->dreg, s390_r0);
2829                         } else {
2830                                 s390_basr (code, s390_r13, 0);
2831                                 s390_j    (code, 6);
2832                                 s390_llong(code, ins->inst_imm);
2833                                 s390_slg  (code, ins->dreg, 0, s390_r13, 4);
2834                         }
2835                 }
2836                         break;
2837                 case OP_SBB_IMM: {
2838                         if (ins->dreg != ins->sreg1) {
2839                                 s390_lgr   (code, ins->dreg, ins->sreg1);
2840                         }
2841                         if (s390_is_imm16 (-ins->inst_imm)) {
2842                                 s390_lghi  (code, s390_r0, ins->inst_imm);
2843                                 s390_slbgr (code, ins->dreg, s390_r0);
2844                         } else {
2845                                 s390_basr (code, s390_r13, 0);
2846                                 s390_j    (code, 6);
2847                                 s390_llong(code, ins->inst_imm);
2848                                 s390_slbg (code, ins->dreg, 0, s390_r13, 4);
2849                         }
2850                 }
2851                         break;
2852                 case OP_LSUB_OVF: {
2853                         CHECK_SRCDST_NCOM;
2854                         s390_sgr  (code, ins->dreg, src2);
2855                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2856                 }
2857                         break;
2858                 case OP_LSUB_OVF_UN: {
2859                         CHECK_SRCDST_NCOM;
2860                         s390_slgr (code, ins->dreg, src2);
2861                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
2862                 }
2863                         break;
2864                 case OP_SUB_OVF_CARRY: {
2865                         CHECK_SRCDST_NCOM;
2866                         s390_lghi  (code, s390_r0, 0);
2867                         s390_lgr   (code, s390_r1, s390_r0);
2868                         s390_slbgr (code, s390_r0, s390_r1);
2869                         s390_sgr   (code, ins->dreg, src2);
2870                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2871                         s390_agr   (code, ins->dreg, s390_r0);
2872                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2873                 }
2874                         break;
2875                 case OP_SUB_OVF_UN_CARRY: {
2876                         CHECK_SRCDST_NCOM;
2877                         s390_slbgr (code, ins->dreg, src2);
2878                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
2879                 }
2880                         break;
2881                 case CEE_AND: {
2882                         if (ins->sreg1 == ins->dreg) {
2883                                 s390_ngr  (code, ins->dreg, ins->sreg2);
2884                         }
2885                         else {
2886                                 if (ins->sreg2 == ins->dreg) {
2887                                         s390_ngr (code, ins->dreg, ins->sreg1);
2888                                 }
2889                                 else {
2890                                         s390_lgr (code, ins->dreg, ins->sreg1);
2891                                         s390_ngr (code, ins->dreg, ins->sreg2);
2892                                 }
2893                         }
2894                 }
2895                         break;
2896                 case OP_AND_IMM: {
2897                         if (ins->dreg != ins->sreg1) {
2898                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2899                         }
2900                         if (s390_is_imm16 (ins->inst_imm)) {
2901                                 s390_lghi  (code, s390_r0, ins->inst_imm);
2902                                 s390_ngr  (code, ins->dreg, s390_r0);
2903                         } else {
2904                                 s390_basr (code, s390_r13, 0);
2905                                 s390_j    (code, 6);
2906                                 s390_llong(code, ins->inst_imm);
2907                                 s390_ng   (code, ins->dreg, 0, s390_r13, 4);
2908                         }
2909                 }
2910                         break;
2911                 case OP_LDIV: {
2912                         s390_lgr  (code, s390_r1, ins->sreg1);
2913                         s390_dsgr (code, s390_r0, ins->sreg2);
2914                         s390_lgr  (code, ins->dreg, s390_r1);
2915                 }
2916                         break;
2917                 case OP_LDIV_UN: {
2918                         s390_lgr   (code, s390_r1, ins->sreg1);
2919                         s390_lghi  (code, s390_r0, 0);
2920                         s390_dlgr  (code, s390_r0, ins->sreg2);
2921                         s390_lgr   (code, ins->dreg, s390_r1);
2922                 }
2923                         break;
2924                 case OP_DIV_IMM: {
2925                         if (s390_is_imm16 (ins->inst_imm)) {
2926                                 s390_lghi (code, s390_r13, ins->inst_imm);
2927                                 s390_lgr  (code, s390_r1, ins->sreg1);
2928                         } else {
2929                                 s390_basr (code, s390_r13, 0);
2930                                 s390_j    (code, 6);
2931                                 s390_llong(code, ins->inst_imm);
2932                                 s390_lgr  (code, s390_r1, ins->sreg1);
2933                                 s390_lg   (code, s390_r13, 0, s390_r13, 4);
2934                         }
2935                         s390_dsgr (code, s390_r0, s390_r13);
2936                         s390_lgr  (code, ins->dreg, s390_r1);
2937                 }
2938                         break;
2939                 case OP_LREM: {
2940                         s390_lgr  (code, s390_r1, ins->sreg1);
2941                         s390_dsgr (code, s390_r0, ins->sreg2);
2942                         s390_lgr  (code, ins->dreg, s390_r0);
2943                         break;
2944                 }
2945                 case OP_LREM_UN: {
2946                         s390_lgr   (code, s390_r1, ins->sreg1);
2947                         s390_lghi  (code, s390_r0, 0);
2948                         s390_dlgr  (code, s390_r0, ins->sreg2);
2949                         s390_lgr   (code, ins->dreg, s390_r0);
2950                 }
2951                         break;
2952                 case OP_REM_IMM: {
2953                         if (s390_is_imm16 (ins->inst_imm)) {
2954                                 s390_lghi  (code, s390_r13, ins->inst_imm);
2955                                 s390_lgr   (code, s390_r0, ins->sreg1);
2956                         } else {
2957                                 s390_basr (code, s390_r13, 0);
2958                                 s390_j    (code, 6);
2959                                 s390_llong(code, ins->inst_imm);
2960                                 s390_lgr  (code, s390_r0, ins->sreg1);
2961                                 s390_lg   (code, s390_r13, 0, s390_r13, 4);
2962                         }
2963                         s390_dsgr(code, s390_r0, s390_r13);
2964                         s390_lgr (code, ins->dreg, s390_r0);
2965                 }
2966                         break;
2967                 case CEE_OR: {
2968                         if (ins->sreg1 == ins->dreg) {
2969                                 s390_ogr  (code, ins->dreg, ins->sreg2);
2970                         }
2971                         else {
2972                                 if (ins->sreg2 == ins->dreg) {
2973                                         s390_ogr (code, ins->dreg, ins->sreg1);
2974                                 }
2975                                 else {
2976                                         s390_lgr (code, ins->dreg, ins->sreg1);
2977                                         s390_ogr (code, ins->dreg, ins->sreg2);
2978                                 }
2979                         }
2980                 }
2981                         break;
2982                 case OP_OR_IMM: {
2983                         if (ins->dreg != ins->sreg1) {
2984                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2985                         }
2986                         if (s390_is_imm16 (ins->inst_imm)) {
2987                                 s390_lghi (code, s390_r0, ins->inst_imm);
2988                                 s390_ogr  (code, ins->dreg, s390_r0);
2989                         } else {
2990                                 s390_basr (code, s390_r13, 0);
2991                                 s390_j    (code, 6);
2992                                 s390_llong(code, ins->inst_imm);
2993                                 s390_og   (code, ins->dreg, 0, s390_r13, 4);
2994                         }
2995                 }
2996                         break;
2997                 case CEE_XOR: {
2998                         if (ins->sreg1 == ins->dreg) {
2999                                 s390_xgr  (code, ins->dreg, ins->sreg2);
3000                         }
3001                         else {
3002                                 if (ins->sreg2 == ins->dreg) {
3003                                         s390_xgr (code, ins->dreg, ins->sreg1);
3004                                 }
3005                                 else {
3006                                         s390_lgr (code, ins->dreg, ins->sreg1);
3007                                         s390_xgr (code, ins->dreg, ins->sreg2);
3008                                 }
3009                         }
3010                 }
3011                         break;
3012                 case OP_XOR_IMM: {
3013                         if (ins->dreg != ins->sreg1) {
3014                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3015                         }
3016                         if (s390_is_imm16 (ins->inst_imm)) {
3017                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3018                                 s390_xgr  (code, ins->dreg, s390_r0);
3019                         } else {
3020                                 s390_basr (code, s390_r13, 0);
3021                                 s390_j    (code, 6);
3022                                 s390_llong(code, ins->inst_imm);
3023                                 s390_xg   (code, ins->dreg, 0, s390_r13, 4);
3024                         }
3025                 }
3026                         break;
3027                 case CEE_SHL:
3028                 case OP_LSHL: {
3029                         CHECK_SRCDST_NCOM;
3030                         s390_sllg (code, ins->dreg, ins->dreg, src2, 0);
3031                 }
3032                         break;
3033                 case OP_SHL_IMM:
3034                 case OP_LSHL_IMM: {
3035                         if (ins->sreg1 != ins->dreg) {
3036                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3037                         }
3038                         s390_sllg (code, ins->dreg, ins->dreg, 0, (ins->inst_imm & 0x3f));
3039                 }
3040                         break;
3041                 case CEE_SHR:
3042                 case OP_LSHR: {
3043                         CHECK_SRCDST_NCOM;
3044                         s390_srag  (code, ins->dreg, ins->dreg, src2, 0);
3045                 }
3046                         break;
3047                 case OP_SHR_IMM:
3048                 case OP_LSHR_IMM: {
3049                         if (ins->sreg1 != ins->dreg) {
3050                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3051                         }
3052                         s390_srag  (code, ins->dreg, ins->dreg, 0, (ins->inst_imm & 0x3f));
3053                 }
3054                         break;
3055                 case OP_SHR_UN_IMM:
3056                 case OP_LSHR_UN_IMM: {
3057                         if (ins->sreg1 != ins->dreg) {
3058                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3059                         }
3060                         s390_srlg (code, ins->dreg, ins->dreg, 0, (ins->inst_imm & 0x3f));
3061                 }
3062                         break;
3063                 case CEE_SHR_UN:
3064                 case OP_LSHR_UN: {
3065                         CHECK_SRCDST_NCOM;
3066                         s390_srlg (code, ins->dreg, ins->dreg, src2, 0);
3067                 }
3068                         break;
3069                 case CEE_NOT: {
3070                         if (ins->sreg1 != ins->dreg) {
3071                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3072                         }
3073                         s390_lghi (code, s390_r0, -1);
3074                         s390_xgr  (code, ins->dreg, s390_r0);
3075                 }
3076                         break;
3077                 case CEE_NEG: {
3078                         s390_lcgr (code, ins->dreg, ins->sreg1);
3079                 }
3080                         break;
3081                 case CEE_MUL:
3082                 case OP_LMUL: {
3083                         CHECK_SRCDST_COM;
3084                         s390_msgr (code, ins->dreg, src2);
3085                 }
3086                         break;
3087                 case OP_MUL_IMM:
3088                 case OP_LMUL_IMM: {
3089                         if (ins->dreg != ins->sreg1) {
3090                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3091                         }
3092                         if (s390_is_imm16 (ins->inst_imm)) {
3093                                 s390_lghi (code, s390_r13, ins->inst_imm);
3094                         } else {
3095                                 s390_basr (code, s390_r13, 0);
3096                                 s390_j    (code, 6);
3097                                 s390_llong(code, ins->inst_imm);
3098                                 s390_lg   (code, s390_r13, 0, s390_r13, 4);
3099                         }
3100                         s390_msgr (code, ins->dreg, s390_r13);
3101                 }
3102                         break;
3103                 case OP_LMUL_OVF:
3104                 case CEE_MUL_OVF: {
3105                         short int *o[2];
3106                         s390_ltgr (code, s390_r1, ins->sreg1);
3107                         s390_jz   (code, 0); CODEPTR(code, o[0]);
3108                         s390_ltgr (code, s390_r0, ins->sreg2);
3109                         s390_jnz  (code, 6);
3110                         s390_lghi (code, s390_r1, 0);
3111                         s390_j    (code, 0); CODEPTR(code, o[1]);
3112                         s390_xgr  (code, s390_r0, s390_r1);
3113                         s390_msgr (code, s390_r1, ins->sreg2);
3114                         s390_xgr  (code, s390_r0, s390_r1);
3115                         s390_srlg (code, s390_r0, s390_r0, 0, 63);
3116                         s390_ltgr (code, s390_r0, s390_r0);
3117                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3118                         PTRSLOT   (code, o[0]);
3119                         PTRSLOT   (code, o[1]);
3120                         s390_lgr  (code, ins->dreg, s390_r1);
3121                 }
3122                         break;
3123                 case OP_LMUL_OVF_UN:
3124                 case CEE_MUL_OVF_UN: {
3125                         s390_lghi  (code, s390_r0, 0);
3126                         s390_lgr   (code, s390_r1, ins->sreg1);
3127                         s390_mlgr  (code, s390_r0, ins->sreg2);
3128                         s390_ltgr  (code, s390_r0, s390_r0);
3129                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3130                         s390_lgr   (code, ins->dreg, s390_r1);
3131                 }
3132                         break;
3133                 case OP_IADDCC: {
3134                         g_assert_not_reached ();
3135                         CHECK_SRCDST_COM_I;
3136                         s390_algr (code, ins->dreg, src2);
3137                 }
3138                         break;
3139                 case OP_IADD: {
3140                         CHECK_SRCDST_COM_I;
3141                         s390_agr  (code, ins->dreg, src2);
3142                 }
3143                         break;
3144                 case OP_IADC: {
3145                         g_assert_not_reached ();
3146                         CHECK_SRCDST_COM_I;
3147                         s390_alcgr (code, ins->dreg, src2);
3148                 }
3149                         break;
3150                 case OP_IADD_IMM: {
3151                         if (ins->dreg != ins->sreg1) {
3152                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3153                         }
3154                         if (s390_is_imm16 (ins->inst_imm)) {
3155                                 s390_aghi(code, ins->dreg, ins->inst_imm);
3156                         } else {
3157                                 s390_basr (code, s390_r13, 0);
3158                                 s390_j    (code, 4);
3159                                 s390_word (code, ins->inst_imm);
3160                                 s390_agf  (code, ins->dreg, 0, s390_r13, 4);
3161                         }
3162                 }
3163                         break;
3164                 case OP_IADC_IMM: {
3165                         if (ins->dreg != ins->sreg1) {
3166                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3167                         }
3168                         if (s390_is_imm16 (ins->inst_imm)) {
3169                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3170                                 s390_alcgr (code, ins->dreg, s390_r0);
3171                         } else {
3172                                 s390_basr  (code, s390_r13, 0);
3173                                 s390_j     (code, 4);
3174                                 s390_word  (code, ins->inst_imm);
3175                                 s390_lgf   (code, s390_r13, 0, s390_r13, 4);
3176                                 s390_alcgr (code, ins->dreg, s390_r13);
3177                         }
3178                 }
3179                         break;
3180                 case CEE_ADD_OVF: {
3181                         CHECK_SRCDST_COM;
3182                         s390_ar    (code, ins->dreg, src2);
3183                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3184                         s390_lgfr  (code, ins->dreg, ins->dreg);
3185                 }
3186                         break;
3187                 case CEE_ADD_OVF_UN: {
3188                         CHECK_SRCDST_COM;
3189                         s390_algr  (code, ins->dreg, src2);
3190                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3191                         s390_llgfr (code, ins->dreg, ins->dreg);
3192                 }
3193                         break;
3194                 case OP_ISUBCC: {
3195                         CHECK_SRCDST_NCOM_I;
3196                         s390_slgr (code, ins->dreg, src2);
3197                 }
3198                         break;
3199                 case OP_ISUB: {
3200                         CHECK_SRCDST_NCOM_I;
3201                         s390_sgr  (code, ins->dreg, src2);
3202                 }
3203                         break;
3204                 case OP_ISBB: {
3205                         CHECK_SRCDST_NCOM_I;
3206                         s390_slbgr (code, ins->dreg, src2);
3207                 }
3208                         break;
3209                 case OP_ISUB_IMM: {
3210                         if (ins->dreg != ins->sreg1) {
3211                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3212                         }
3213                         if (s390_is_imm16 (-ins->inst_imm)) {
3214                                 s390_aghi (code, ins->dreg, -ins->inst_imm);
3215                         } else {
3216                                 s390_basr (code, s390_r13, 0);
3217                                 s390_j    (code, 4);
3218                                 s390_word (code, ins->inst_imm);
3219                                 s390_sgf  (code, ins->dreg, 0, s390_r13, 4);
3220                         }
3221                 }
3222                         break;
3223                 case OP_ISBB_IMM: {
3224                         s390_basr (code, s390_r13, 0);
3225                         s390_j    (code, 4);
3226                         s390_word (code, ins->inst_imm);
3227                         s390_slgf (code, ins->dreg, 0, s390_r13, 4);
3228                 }
3229                         break;
3230                 case CEE_SUB_OVF: {
3231                         CHECK_SRCDST_NCOM;
3232                         s390_sr   (code, ins->dreg, src2);
3233                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3234                         s390_lgfr (code, ins->dreg, ins->dreg);
3235                 }
3236                         break;
3237                 case CEE_SUB_OVF_UN: {
3238                         CHECK_SRCDST_NCOM;
3239                         s390_slr  (code, ins->dreg, src2);
3240                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3241                         s390_llgfr(code, ins->dreg, ins->dreg);
3242                 }
3243                         break;
3244                 case OP_IAND: {
3245                         CHECK_SRCDST_NCOM_I;
3246                         s390_ngr (code, ins->dreg, src2);
3247                 }
3248                         break;
3249                 case OP_IAND_IMM: {
3250                         if (ins->dreg != ins->sreg1) {
3251                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3252                         }
3253                         if (s390_is_imm16 (ins->inst_imm)) {
3254                                 s390_lghi (code, s390_r0, ins->inst_imm);
3255                                 s390_ngr  (code, ins->dreg, s390_r0);
3256                         } else {
3257                                 s390_basr (code, s390_r13, 0);
3258                                 s390_j    (code, 6);
3259                                 s390_llong(code, ins->inst_imm);
3260                                 s390_ng   (code, ins->dreg, 0, s390_r13, 4);
3261                         }
3262                 }
3263                         break;
3264                 case OP_IDIV: {
3265                         s390_lgfr (code, s390_r0, ins->sreg1);
3266                         s390_srda (code, s390_r0, 0, 32);
3267                         s390_dr   (code, s390_r0, ins->sreg2);
3268                         s390_lgfr (code, ins->dreg, s390_r1);
3269                 }
3270                         break;
3271                 case OP_IDIV_UN: {
3272                         s390_lgfr (code, s390_r0, ins->sreg1);
3273                         s390_srdl (code, s390_r0, 0, 32);
3274                         s390_dlr  (code, s390_r0, ins->sreg2);
3275                         s390_lgfr (code, ins->dreg, s390_r1);
3276                 }
3277                         break;
3278                 case OP_IDIV_IMM: {
3279                         if (s390_is_imm16 (ins->inst_imm)) {
3280                                 s390_lghi (code, s390_r13, ins->inst_imm);
3281                                 s390_lgfr (code, s390_r0, ins->sreg1);
3282                         } else {
3283                                 s390_basr (code, s390_r13, 0);
3284                                 s390_j    (code, 4);
3285                                 s390_word (code, ins->inst_imm);
3286                                 s390_lgfr (code, s390_r0, ins->sreg1);
3287                                 s390_lgf  (code, s390_r13, 0, s390_r13, 4);
3288                         }
3289                         s390_srda (code, s390_r0, 0, 32);
3290                         s390_dr   (code, s390_r0, ins->sreg2);
3291                         s390_lgfr (code, ins->dreg, s390_r1);
3292                 }
3293                         break;
3294                 case OP_IREM: {
3295                         s390_lgfr (code, s390_r0, ins->sreg1);
3296                         s390_srda (code, s390_r0, 0, 32);
3297                         s390_dr   (code, s390_r0, ins->sreg2);
3298                         s390_lgfr (code, ins->dreg, s390_r0);
3299                         break;
3300                 case OP_IREM_UN:
3301                         s390_lgfr (code, s390_r0, ins->sreg1);
3302                         s390_srdl (code, s390_r0, 0, 32);
3303                         s390_dlr  (code, s390_r0, ins->sreg2);
3304                         s390_lgfr (code, ins->dreg, s390_r0);
3305                 }
3306                         break;
3307                 case OP_IREM_IMM: {
3308                         if (s390_is_imm16 (ins->inst_imm)) {
3309                                 s390_lghi (code, s390_r13, ins->inst_imm);
3310                                 s390_lgfr (code, s390_r0, ins->sreg1);
3311                         } else {
3312                                 s390_basr (code, s390_r13, 0);
3313                                 s390_j    (code, 4);
3314                                 s390_word (code, ins->inst_imm);
3315                                 s390_lgfr (code, s390_r0, ins->sreg1);
3316                                 s390_lgf  (code, s390_r13, 0, s390_r13, 4);
3317                         }
3318                         s390_srda (code, s390_r0, 0, 32);
3319                         s390_dr   (code, s390_r0, ins->sreg2);
3320                         s390_lgfr (code, ins->dreg, s390_r0);
3321                 }
3322                         break;
3323                 case OP_IOR: {
3324                         CHECK_SRCDST_COM_I;
3325                         s390_ogr (code, ins->dreg, src2);
3326                 }
3327                         break;
3328                 case OP_IOR_IMM: {
3329                         if (ins->dreg != ins->sreg1) {
3330                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3331                         }
3332                         if (s390_is_imm16 (ins->inst_imm)) {
3333                                 s390_lghi (code, s390_r0, ins->inst_imm);
3334                                 s390_ogr  (code, ins->dreg, s390_r0);
3335                         } else {
3336                                 s390_basr (code, s390_r13, 0);
3337                                 s390_j    (code, 6);
3338                                 s390_llong(code, ins->inst_imm);
3339                                 s390_og   (code, ins->dreg, 0, s390_r13, 4);
3340                         }
3341                 }
3342                         break;
3343                 case OP_IXOR: {
3344                         CHECK_SRCDST_COM_I;
3345                         s390_xgr (code, ins->dreg, src2);
3346                 }
3347                         break;
3348                 case OP_IXOR_IMM: {
3349                         if (ins->dreg != ins->sreg1) {
3350                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3351                         }
3352                         if (s390_is_imm16 (ins->inst_imm)) {
3353                                 s390_lghi (code, s390_r0, ins->inst_imm);
3354                                 s390_xgr  (code, ins->dreg, s390_r0);
3355                         } else {
3356                                 s390_basr (code, s390_r13, 0);
3357                                 s390_j    (code, 6);
3358                                 s390_llong(code, ins->inst_imm);
3359                                 s390_xg   (code, ins->dreg, 0, s390_r13, 4);
3360                         }
3361                 }
3362                         break;
3363                 case OP_ISHL: {
3364                         if (ins->sreg1 != ins->dreg) {
3365                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3366                         }
3367                         s390_sll  (code, ins->dreg, ins->sreg2, 0);
3368                 }
3369                         break;
3370                 case OP_ISHL_IMM: {
3371                         if (ins->sreg1 != ins->dreg) {
3372                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3373                         }
3374                         s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3375                 }
3376                         break;
3377                 case OP_ISHR: {
3378                         if (ins->sreg1 != ins->dreg) {
3379                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3380                         }
3381                         s390_sra (code, ins->dreg, ins->sreg2, 0);
3382                 }
3383                         break;
3384                 case OP_ISHR_IMM: {
3385                         if (ins->sreg1 != ins->dreg) {
3386                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3387                         }
3388                         s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3389                 }
3390                         break;
3391                 case OP_ISHR_UN_IMM: {
3392                         if (ins->sreg1 != ins->dreg) {
3393                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3394                         }
3395                         s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3396                 }
3397                         break;
3398                 case OP_ISHR_UN: {
3399                         if (ins->sreg1 != ins->dreg) {
3400                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3401                         }
3402                         s390_srl  (code, ins->dreg, ins->sreg2, 0);
3403                 }
3404                         break;
3405                 case OP_INOT: {
3406                         if (ins->sreg1 != ins->dreg) {
3407                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3408                         }
3409                         s390_lghi (code, s390_r0, -1);
3410                         s390_xgr  (code, ins->dreg, s390_r0);
3411                 }
3412                         break;
3413                 case OP_INEG: {
3414                         s390_lcgr (code, ins->dreg, ins->sreg1);
3415                 }
3416                         break;
3417                 case OP_IMUL: {
3418                         CHECK_SRCDST_COM_I;
3419                         s390_msr (code, ins->dreg, src2);
3420                 }
3421                         break;
3422                 case OP_IMUL_IMM: {
3423                         if (ins->dreg != ins->sreg1) {
3424                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3425                         }
3426                         if (s390_is_imm16 (ins->inst_imm)) {
3427                                 s390_lghi (code, s390_r13, ins->inst_imm);
3428                         } else {
3429                                 s390_basr (code, s390_r13, 0);
3430                                 s390_j    (code, 4);
3431                                 s390_word (code, ins->inst_imm);
3432                                 s390_lgf  (code, s390_r13, 0, s390_r13, 4);
3433                         }
3434                         s390_msr  (code, ins->dreg, s390_r13);
3435                 }
3436                         break;
3437                 case OP_IMUL_OVF: {
3438                         short int *o[2];
3439                         s390_ltr  (code, s390_r1, ins->sreg1);
3440                         s390_jz   (code, 0); CODEPTR(code, o[0]);
3441                         s390_ltr  (code, s390_r0, ins->sreg2);
3442                         s390_jnz  (code, 6);
3443                         s390_lhi  (code, s390_r1, 0);
3444                         s390_j    (code, 0); CODEPTR(code, o[1]);
3445                         s390_xr   (code, s390_r0, s390_r1);
3446                         s390_msr  (code, s390_r1, ins->sreg2);
3447                         s390_xr   (code, s390_r0, s390_r1);
3448                         s390_srl  (code, s390_r0, 0, 31);
3449                         s390_ltr  (code, s390_r0, s390_r0);
3450                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3451                         PTRSLOT   (code, o[0]);
3452                         PTRSLOT   (code, o[1]);
3453                         s390_lgfr (code, ins->dreg, s390_r1);
3454                 }
3455                         break;
3456                 case OP_IMUL_OVF_UN: {
3457                         s390_lhi  (code, s390_r0, 0);
3458                         s390_lr   (code, s390_r1, ins->sreg1);
3459                         s390_mlr  (code, s390_r0, ins->sreg2);
3460                         s390_ltr  (code, s390_r0, s390_r0);
3461                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3462                         s390_lgfr (code, ins->dreg, s390_r1);
3463                 }
3464                         break;
3465                 case OP_ICONST:
3466                 case OP_I8CONST:
3467                 case OP_SETREGIMM: {
3468                         if (s390_is_imm16(ins->inst_c0)) {
3469                                 s390_lghi (code, ins->dreg, ins->inst_c0);
3470                         } else {
3471                                 s390_basr (code, s390_r13, 0);
3472                                 s390_j    (code, 6);
3473                                 s390_llong(code, ins->inst_c0);
3474                                 s390_lg   (code, ins->dreg, 0, s390_r13, 4);
3475                         }
3476                 }
3477                         break;
3478                 case OP_AOTCONST: {
3479                         s390_basr (code, s390_r13, 0);
3480                         s390_j    (code, 6);
3481                         mono_add_patch_info (cfg, code - cfg->native_code,
3482                                 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3483                         s390_llong(code, 0);
3484                         s390_lg   (code,ins->dreg, 0, s390_r13, 4);
3485                 }
3486                         break;
3487                 case CEE_CONV_I:
3488                 case CEE_CONV_I8:
3489                 case OP_MOVE:
3490                 case OP_SETREG: {
3491                         if (ins->dreg != ins->sreg1) {
3492                                 s390_lgr (code, ins->dreg, ins->sreg1);
3493                         }
3494                 }
3495                         break;
3496                 case CEE_CONV_I4:
3497                         s390_lgfr (code, ins->dreg, ins->sreg1);
3498                         break;
3499                 case CEE_CONV_U:
3500                 case CEE_CONV_U8:
3501                 case CEE_CONV_U4:
3502                         s390_llgfr (code, ins->dreg, ins->sreg1);
3503                         break;
3504                 case CEE_CONV_OVF_U4:
3505                         s390_basr (code, s390_r13, 0);
3506                         s390_j    (code, 6);
3507                         s390_llong(code, 4294967295);
3508                         s390_clg  (code, ins->sreg1, 0, s390_r13, 4);
3509                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, "OverflowException");
3510                         s390_ltgr (code, ins->sreg1, ins->sreg1);
3511                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, "OverflowException");
3512                         s390_llgfr(code, ins->dreg, ins->sreg1);
3513                         break;
3514                 case CEE_CONV_OVF_I4_UN:
3515                         s390_basr (code, s390_r13, 0);
3516                         s390_j    (code, 6);
3517                         s390_llong(code, 2147483647);
3518                         s390_cg   (code, ins->sreg1, 0, s390_r13, 4);
3519                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, "OverflowException");
3520                         s390_ltgr (code, ins->sreg1, ins->sreg1);
3521                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, "OverflowException");
3522                         s390_lgfr (code, ins->dreg, ins->sreg1);
3523                         break;
3524                 case OP_SETFREG:
3525                 case OP_FMOVE: {
3526                         if (ins->dreg != ins->sreg1) {
3527                                 s390_ldr   (code, ins->dreg, ins->sreg1);
3528                         }
3529                 }
3530                         break;
3531                 case OP_S390_SETF4RET: {
3532                         s390_ledbr (code, ins->dreg, ins->sreg1);
3533                 }
3534                         break;
3535                 case OP_FCONV_TO_R4: {
3536                         g_error ("Shouldn't be reached");
3537                         if ((ins->next) &&
3538                             (ins->next->opcode != OP_FMOVE) &&
3539                             (ins->next->opcode != OP_STORER4_MEMBASE_REG))
3540                                 s390_ledbr (code, ins->dreg, ins->sreg1);
3541                 }
3542                         break;
3543                 case CEE_JMP: {
3544                         if (cfg->method->save_lmf)
3545                                 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
3546
3547                         if (cfg->flags & MONO_CFG_HAS_TAIL) {
3548                                 code =  emit_load_volatile_registers(code, cfg);
3549                         }
3550
3551                         code = backUpStackPtr(cfg, code);
3552                         s390_lg  (code, s390_r14, 0, STK_BASE, S390_RET_ADDR_OFFSET);
3553                         mono_add_patch_info (cfg, code - cfg->native_code,
3554                                              MONO_PATCH_INFO_METHOD_JUMP,
3555                                              ins->inst_p0);
3556                         s390_jcl (code, S390_CC_UN, 0);
3557                 }
3558                         break;
3559                 case OP_CHECK_THIS: {
3560                         /* ensure ins->sreg1 is not NULL */
3561                         s390_lg   (code, s390_r0, 0, ins->sreg1, 0);
3562                         s390_ltgr (code, s390_r0, s390_r0);
3563                 }
3564                         break;
3565                 case OP_ARGLIST: {
3566                         int offset = cfg->sig_cookie + cfg->stack_usage;
3567
3568                         if (s390_is_imm16 (offset))
3569                                 s390_lghi (code, s390_r0, offset);
3570                         else {
3571                                 s390_basr (code, s390_r13, 0);
3572                                 s390_j    (code, 6);
3573                                 s390_llong(code, offset);
3574                                 s390_lg   (code, s390_r0, 0, s390_r13, 0);
3575                         }
3576                         s390_agr  (code, s390_r0, cfg->frame_reg);
3577                         s390_stg  (code, s390_r0, 0, ins->sreg1, 0);
3578                 }
3579                         break;
3580                 case OP_FCALL: {
3581                         s390_basr (code, s390_r13, 0);
3582                         s390_j    (code, 6);
3583                         call = (MonoCallInst*)ins;
3584                         if (ins->flags & MONO_INST_HAS_METHOD)
3585                                 mono_add_patch_info (cfg, code-cfg->native_code,
3586                                                      MONO_PATCH_INFO_METHOD,
3587                                                      call->method);
3588                         else
3589                                 mono_add_patch_info (cfg, code-cfg->native_code,
3590                                                      MONO_PATCH_INFO_ABS,
3591                                                      call->fptr);
3592                         s390_llong(code, 0);
3593                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3594                         s390_basr (code, s390_r14, s390_r14);
3595                         if (call->signature->ret->type == MONO_TYPE_R4)
3596                                 s390_ldebr (code, s390_f0, s390_f0);
3597                 }
3598                         break;
3599                 case OP_LCALL:
3600                 case OP_VCALL:
3601                 case OP_VOIDCALL:
3602                 case CEE_CALL: {
3603                         s390_basr (code, s390_r13, 0);
3604                         s390_j    (code, 6);
3605                         call = (MonoCallInst*)ins;
3606                         if (ins->flags & MONO_INST_HAS_METHOD)
3607                                 mono_add_patch_info (cfg, code-cfg->native_code,
3608                                                      MONO_PATCH_INFO_METHOD,
3609                                                      call->method);
3610                         else
3611                                 mono_add_patch_info (cfg, code-cfg->native_code,
3612                                                      MONO_PATCH_INFO_ABS,
3613                                                      call->fptr);
3614                         s390_llong(code, 0);
3615                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3616                         s390_basr (code, s390_r14, s390_r14);
3617                 }
3618                         break;
3619                 case OP_FCALL_REG: {
3620                         call = (MonoCallInst*)ins;
3621                         s390_lgr  (code, s390_r1, ins->sreg1);
3622                         s390_basr (code, s390_r14, s390_r1);
3623                         if (call->signature->ret->type == MONO_TYPE_R4)
3624                                 s390_ldebr (code, s390_f0, s390_f0);
3625                 }
3626                         break;
3627                 case OP_LCALL_REG:
3628                 case OP_VCALL_REG:
3629                 case OP_VOIDCALL_REG:
3630                 case OP_CALL_REG: {
3631                         s390_lgr  (code, s390_r1, ins->sreg1);
3632                         s390_basr (code, s390_r14, s390_r1);
3633                 }
3634                         break;
3635                 case OP_FCALL_MEMBASE: {
3636                         call = (MonoCallInst*)ins;
3637                         s390_lg   (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3638                         s390_basr (code, s390_r14, s390_r1);
3639                         if (call->signature->ret->type == MONO_TYPE_R4)
3640                                 s390_ldebr (code, s390_f0, s390_f0);
3641                 }
3642                         break;
3643                 case OP_LCALL_MEMBASE:
3644                 case OP_VCALL_MEMBASE:
3645                 case OP_VOIDCALL_MEMBASE:
3646                 case OP_CALL_MEMBASE: {
3647                         s390_lg   (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3648                         s390_basr (code, s390_r14, s390_r1);
3649                 }
3650                         break;
3651                 case OP_OUTARG:
3652                         g_assert_not_reached ();
3653                         break;
3654                 case OP_LOCALLOC: {
3655                         int alloca_skip = S390_MINIMAL_STACK_SIZE + cfg->param_area;
3656                         int area_offset = S390_ALIGN(alloca_skip, S390_STACK_ALIGNMENT);
3657                         s390_lgr  (code, s390_r1, ins->sreg1);
3658                         if (ins->flags & MONO_INST_INIT)
3659                                 s390_lgr  (code, s390_r0, ins->sreg1);
3660                         s390_aghi (code, s390_r1, 14);
3661                         s390_srlg (code, s390_r1, s390_r1, 0, 3);
3662                         s390_sllg (code, s390_r1, s390_r1, 0, 3);
3663                         if (cfg->method->save_lmf) {
3664                                 /*----------------------------------*/
3665                                 /* we have to adjust lmf ebp value  */
3666                                 /*----------------------------------*/
3667                                 int lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
3668
3669                                 s390_lgr (code, s390_r13, cfg->frame_reg);
3670                                 if (s390_is_uimm16(lmfOffset))
3671                                         s390_aghi (code, s390_r13, lmfOffset);
3672                                 else {
3673                                         s390_basr (code, s390_r14, 0);
3674                                         s390_j    (code, 4);
3675                                         s390_word (code, lmfOffset);
3676                                         s390_agf  (code, s390_r13, 0, s390_r14, 4);
3677                                 }
3678                                 s390_lgr (code, s390_r14, STK_BASE);
3679                                 s390_sgr (code, s390_r14, s390_r1);
3680                                 s390_stg (code, s390_r14, 0, s390_r13,
3681                                           G_STRUCT_OFFSET(MonoLMF, ebp));
3682                         }
3683                         s390_lg   (code, s390_r13, 0, STK_BASE, 0);
3684                         s390_sgr  (code, STK_BASE, s390_r1);
3685                         s390_stg  (code, s390_r13, 0, STK_BASE, 0);
3686                         s390_la   (code, ins->dreg, 0, STK_BASE, area_offset);
3687                         s390_srlg (code, ins->dreg, ins->dreg, 0, 3);
3688                         s390_sllg (code, ins->dreg, ins->dreg, 0, 3);
3689                         if (ins->flags & MONO_INST_INIT) {
3690                                 s390_lgr  (code, s390_r1, s390_r0);
3691                                 s390_lgr  (code, s390_r0, ins->dreg);
3692                                 s390_lgr  (code, s390_r14, s390_r12);
3693                                 s390_lghi (code, s390_r13, 0);
3694                                 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
3695                                 s390_jo   (code, -2);
3696                                 s390_lgr  (code, s390_r12, s390_r14);
3697                         }
3698                 }
3699                         break;
3700                 case CEE_RET: {
3701                         s390_br  (code, s390_r14);
3702                 }
3703                         break;
3704                 case CEE_THROW: {
3705                         s390_lgr  (code, s390_r2, ins->sreg1);
3706                         s390_basr (code, s390_r13, 0);
3707                         s390_j    (code, 6);
3708                         mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3709                                              (gpointer) "mono_arch_throw_exception");
3710                         s390_llong(code, 0);
3711                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3712                         s390_basr (code, s390_r14, s390_r14);
3713                 }
3714                         break;
3715                 case OP_RETHROW: {
3716                         s390_lgr  (code, s390_r2, ins->sreg1);
3717                         s390_basr (code, s390_r13, 0);
3718                         s390_j    (code, 6);
3719                         mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3720                                              (gpointer) "mono_arch_rethrow_exception");
3721                         s390_llong(code, 0);
3722                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3723                         s390_basr (code, s390_r14, s390_r14);
3724                 }
3725                         break;
3726                 case OP_START_HANDLER: {
3727                         S390_LONG (code, stg, stg, s390_r14, 0,
3728                                    ins->inst_left->inst_basereg,
3729                                    ins->inst_left->inst_offset);
3730                 }
3731                         break;
3732                 case OP_ENDFILTER: {
3733                         if (ins->sreg1 != s390_r2)
3734                                 s390_lgr(code, s390_r2, ins->sreg1);
3735                         S390_LONG (code, lg, lg, s390_r14, 0,
3736                                    ins->inst_left->inst_basereg,
3737                                    ins->inst_left->inst_offset);
3738                         s390_br  (code, s390_r14);
3739                 }
3740                         break;
3741                 case CEE_ENDFINALLY: {
3742                         S390_LONG (code, lg, lg, s390_r14, 0,
3743                                    ins->inst_left->inst_basereg,
3744                                    ins->inst_left->inst_offset);
3745                         s390_br  (code, s390_r14);
3746                 }
3747                         break;
3748                 case OP_CALL_HANDLER: {
3749                         mono_add_patch_info (cfg, code-cfg->native_code,
3750                                              MONO_PATCH_INFO_BB, ins->inst_target_bb);
3751                         s390_brasl (code, s390_r14, 0);
3752                 }
3753                         break;
3754                 case OP_LABEL: {
3755                         ins->inst_c0 = code - cfg->native_code;
3756                 }
3757                         break;
3758                 case CEE_BR:
3759                         EMIT_UNCOND_BRANCH(ins);
3760                         break;
3761                 case OP_BR_REG: {
3762                         s390_br  (code, ins->sreg1);
3763                 }
3764                         break;
3765                 case OP_CEQ:
3766                 case OP_ICEQ: {
3767                         s390_lghi(code, ins->dreg, 1);
3768                         s390_jz  (code, 4);
3769                         s390_lghi(code, ins->dreg, 0);
3770                 }
3771                         break;
3772                 case OP_CLT:
3773                 case OP_ICLT: {
3774                         s390_lghi(code, ins->dreg, 1);
3775                         s390_jl  (code, 4);
3776                         s390_lghi(code, ins->dreg, 0);
3777                 }
3778                         break;
3779                 case OP_CLT_UN:
3780                 case OP_ICLT_UN: {
3781                         s390_lghi(code, ins->dreg, 1);
3782                         s390_jlo (code, 4);
3783                         s390_lghi(code, ins->dreg, 0);
3784                 }
3785                         break;
3786                 case OP_CGT:
3787                 case OP_ICGT: {
3788                         s390_lghi(code, ins->dreg, 1);
3789                         s390_jh  (code, 4);
3790                         s390_lghi(code, ins->dreg, 0);
3791                 }
3792                         break;
3793                 case OP_CGT_UN:
3794                 case OP_ICGT_UN: {
3795                         s390_lghi(code, ins->dreg, 1);
3796                         s390_jho (code, 4);
3797                         s390_lghi(code, ins->dreg, 0);
3798                 }
3799                         break;
3800                 case OP_COND_EXC_EQ:
3801                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
3802                         break;
3803                 case OP_COND_EXC_NE_UN:
3804                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
3805                         break;
3806                 case OP_COND_EXC_LT:
3807                 case OP_COND_EXC_LT_UN:
3808                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
3809                         break;
3810                 case OP_COND_EXC_GT:
3811                 case OP_COND_EXC_GT_UN:
3812                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
3813                         break;
3814                 case OP_COND_EXC_GE:
3815                 case OP_COND_EXC_GE_UN:
3816                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
3817                         break;
3818                 case OP_COND_EXC_LE:
3819                 case OP_COND_EXC_LE_UN:
3820                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
3821                         break;
3822                 case OP_COND_EXC_OV:
3823                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
3824                         break;
3825                 case OP_COND_EXC_NO:
3826                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
3827                         break;
3828                 case OP_COND_EXC_C:
3829                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
3830                         break;
3831                 case OP_COND_EXC_NC:
3832                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
3833                         break;
3834                 case CEE_BEQ:
3835                 case OP_IBEQ:
3836                         EMIT_COND_BRANCH (ins, S390_CC_EQ);
3837                         break;
3838                 case CEE_BNE_UN:
3839                 case OP_IBNE_UN:
3840                         EMIT_COND_BRANCH (ins, S390_CC_NE);
3841                         break;
3842                 case CEE_BLT:
3843                 case CEE_BLT_UN:
3844                 case OP_IBLT:
3845                 case OP_IBLT_UN:
3846                         EMIT_COND_BRANCH (ins, S390_CC_LT);
3847                         break;
3848                 case CEE_BGT:
3849                 case CEE_BGT_UN:
3850                 case OP_IBGT:
3851                 case OP_IBGT_UN:
3852                         EMIT_COND_BRANCH (ins, S390_CC_GT);
3853                         break;
3854                 case CEE_BGE:
3855                 case CEE_BGE_UN:
3856                 case OP_IBGE:
3857                 case OP_IBGE_UN:
3858                         EMIT_COND_BRANCH (ins, S390_CC_GE);
3859                         break;
3860                 case CEE_BLE:
3861                 case CEE_BLE_UN:
3862                 case OP_IBLE:
3863                 case OP_IBLE_UN:
3864                         EMIT_COND_BRANCH (ins, S390_CC_LE);
3865                         break;
3866
3867                 /* floating point opcodes */
3868                 case OP_R8CONST: {
3869                         if (*((float *) ins->inst_p0) == 0) {
3870                                 s390_lzdr (code, ins->dreg);
3871                         } else {
3872                                 s390_basr  (code, s390_r13, 0);
3873                                 s390_j     (code, 6);
3874                                 s390_llong (code, ins->inst_p0);
3875                                 s390_lg    (code, s390_r13, 0, s390_r13, 4);
3876                                 s390_ld    (code, ins->dreg, 0, s390_r13, 0);
3877                         }
3878                 }
3879                         break;
3880                 case OP_R4CONST: {
3881                         if (*((float *) ins->inst_p0) == 0) {
3882                                 s390_lzdr (code, ins->dreg);
3883                         } else {
3884                                 s390_basr (code, s390_r13, 0);
3885                                 s390_j    (code, 6);
3886                                 s390_llong(code, ins->inst_p0);
3887                                 s390_lg   (code, s390_r13, 0, s390_r13, 4);
3888                                 s390_ldeb (code, ins->dreg, 0, s390_r13, 0);
3889                         }
3890                 }
3891                         break;
3892                 case OP_STORER8_MEMBASE_REG: {
3893                         S390_LONG (code, stdy, std, ins->sreg1, 0,
3894                                    ins->inst_destbasereg, ins->inst_offset);
3895                 }
3896                         break;
3897                 case OP_LOADR8_MEMBASE: {
3898                         S390_LONG (code, ldy, ld, ins->dreg, 0,
3899                                    ins->inst_basereg, ins->inst_offset);
3900                 }
3901                         break;
3902                 case OP_STORER4_MEMBASE_REG: {
3903                         s390_ledbr (code, s390_f15, ins->sreg1);
3904                         S390_LONG (code, stey, ste, s390_f15, 0,
3905                                    ins->inst_destbasereg, ins->inst_offset);
3906                 }
3907                         break;
3908                 case OP_LOADR4_MEMBASE: {
3909                         S390_LONG (code, ldy, ld, s390_f15, 0,
3910                                    ins->inst_basereg, ins->inst_offset);
3911                         s390_ldebr (code, ins->dreg, s390_f15);
3912                 }
3913                         break;
3914                 case CEE_CONV_R_UN: {
3915                         s390_cdgbr (code, ins->dreg, ins->sreg1);
3916                         s390_ltgr  (code, ins->sreg1, ins->sreg1);
3917                         s390_jnl   (code, 12);
3918                         s390_basr  (code, s390_r13, 0);
3919                         s390_j     (code, 6);
3920                         s390_word  (code, 0x41f00000);
3921                         s390_word  (code, 0);
3922                         s390_adb   (code, ins->dreg, 0, s390_r13, 4);
3923                 }
3924                         break;
3925                 case OP_LCONV_TO_R4:
3926                 case CEE_CONV_R4: {
3927                         s390_cdgbr (code, ins->dreg, ins->sreg1);
3928                 }
3929                         break;
3930                 case OP_LCONV_TO_R8:
3931                 case CEE_CONV_R8: {
3932                         s390_cdgbr (code, ins->dreg, ins->sreg1);
3933                 }
3934                         break;
3935                 case OP_FCONV_TO_I1:
3936                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
3937                         break;
3938                 case OP_FCONV_TO_U1:
3939                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
3940                         break;
3941                 case OP_FCONV_TO_I2:
3942                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
3943                         break;
3944                 case OP_FCONV_TO_U2:
3945                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
3946                         break;
3947                 case OP_FCONV_TO_I4:
3948                 case OP_FCONV_TO_I:
3949                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
3950                         break;
3951                 case OP_FCONV_TO_U4:
3952                 case OP_FCONV_TO_U:
3953                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
3954                         break;
3955                 case OP_FCONV_TO_I8:
3956                         s390_cgdbr (code, ins->dreg, 5, ins->sreg1);
3957                         break;
3958                 case OP_FCONV_TO_U8:
3959                         g_assert_not_reached ();
3960                         /* Implemented as helper calls */
3961                         break;
3962                 case OP_LCONV_TO_R_UN:
3963                         g_assert_not_reached ();
3964                         /* Implemented as helper calls */
3965                         break;
3966                 case OP_LCONV_TO_OVF_I: {
3967                         /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
3968                         short int *o[5];
3969                         s390_ltgr (code, ins->sreg2, ins->sreg2);
3970                         s390_jnl  (code, 0); CODEPTR(code, o[0]);
3971                         s390_ltgr (code, ins->sreg1, ins->sreg1);
3972                         s390_jnl  (code, 0); CODEPTR(code, o[1]);
3973                         s390_lhi  (code, s390_r13, -1);
3974                         s390_cgr  (code, ins->sreg1, s390_r13);
3975                         s390_jnz  (code, 0); CODEPTR(code, o[2]);
3976                         if (ins->dreg != ins->sreg2)
3977                                 s390_lgr  (code, ins->dreg, ins->sreg2);
3978                         s390_j    (code, 0); CODEPTR(code, o[3]);
3979                         PTRSLOT(code, o[0]);
3980                         s390_jz   (code, 0); CODEPTR(code, o[4]);
3981                         PTRSLOT(code, o[1]);
3982                         PTRSLOT(code, o[2]);
3983                         mono_add_patch_info (cfg, code - cfg->native_code,
3984                                              MONO_PATCH_INFO_EXC, "OverflowException");
3985                         s390_brasl (code, s390_r14, 0);
3986                         PTRSLOT(code, o[3]);
3987                         PTRSLOT(code, o[4]);
3988                 }
3989                         break;
3990                 case OP_ABS: {
3991                         s390_lpdbr (code, ins->dreg, ins->sreg1);
3992                 }
3993                         break;
3994                 case OP_SQRT: {
3995                         s390_sqdbr (code, ins->dreg, ins->sreg1);
3996                 }
3997                         break;
3998                 case OP_FADD: {
3999                         CHECK_SRCDST_COM_F;
4000                         s390_adbr (code, ins->dreg, src2);
4001                 }
4002                         break;
4003                 case OP_FSUB: {
4004                         CHECK_SRCDST_NCOM_F;
4005                         s390_sdbr (code, ins->dreg, src2);
4006                 }
4007                         break;
4008                 case OP_FMUL: {
4009                         CHECK_SRCDST_COM_F;
4010                         s390_mdbr (code, ins->dreg, src2);
4011                 }
4012                         break;
4013                 case OP_FDIV: {
4014                         CHECK_SRCDST_NCOM_F;
4015                         s390_ddbr (code, ins->dreg, src2);
4016                 }
4017                         break;
4018                 case OP_FNEG: {
4019                         s390_lcdbr (code, ins->dreg, ins->sreg1);
4020                 }
4021                         break;
4022                 case OP_FREM: {
4023                         CHECK_SRCDST_NCOM_F;
4024                         s390_didbr (code, ins->dreg, src2, 5, s390_f15);
4025                 }
4026                         break;
4027                 case OP_FCOMPARE: {
4028                         s390_cdbr (code, ins->sreg1, ins->sreg2);
4029                 }
4030                         break;
4031                 case OP_FCEQ: {
4032                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4033                         s390_lghi  (code, ins->dreg, 1);
4034                         s390_je    (code, 4);
4035                         s390_lghi  (code, ins->dreg, 0);
4036                 }
4037                         break;
4038                 case OP_FCLT: {
4039                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4040                         s390_lghi  (code, ins->dreg, 1);
4041                         s390_jl    (code, 4);
4042                         s390_lghi  (code, ins->dreg, 0);
4043                 }
4044                         break;
4045                 case OP_FCLT_UN: {
4046                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4047                         s390_lghi  (code, ins->dreg, 1);
4048                         s390_jlo   (code, 4);
4049                         s390_lghi  (code, ins->dreg, 0);
4050                 }
4051                         break;
4052                 case OP_FCGT: {
4053                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4054                         s390_lghi  (code, ins->dreg, 1);
4055                         s390_jh    (code, 4);
4056                         s390_lghi  (code, ins->dreg, 0);
4057                 }
4058                         break;
4059                 case OP_FCGT_UN: {
4060                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4061                         s390_lghi  (code, ins->dreg, 1);
4062                         s390_jho   (code, 4);
4063                         s390_lghi  (code, ins->dreg, 0);
4064                 }
4065                         break;
4066                 case OP_FBEQ:
4067                         EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
4068                         break;
4069                 case OP_FBNE_UN:
4070                         EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
4071                         break;
4072                 case OP_FBLT:
4073                         EMIT_COND_BRANCH (ins, S390_CC_LT);
4074                         break;
4075                 case OP_FBLT_UN:
4076                         EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
4077                         break;
4078                 case OP_FBGT:
4079                         EMIT_COND_BRANCH (ins, S390_CC_GT);
4080                         break;
4081                 case OP_FBGT_UN:
4082                         EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
4083                         break;
4084                 case OP_FBGE:
4085                         EMIT_COND_BRANCH (ins, S390_CC_GE);
4086                         break;
4087                 case OP_FBGE_UN:
4088                         EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
4089                         break;
4090                 case OP_FBLE:
4091                         EMIT_COND_BRANCH (ins, S390_CC_LE);
4092                         break;
4093                 case OP_FBLE_UN:
4094                         EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
4095                         break;
4096                 case CEE_CKFINITE: {
4097                         short *o;
4098                         s390_lhi  (code, s390_r13, 0x7f);
4099                         s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
4100                         s390_jz   (code, 0); CODEPTR(code, o);
4101                         mono_add_patch_info (cfg, code - cfg->native_code,
4102                                              MONO_PATCH_INFO_EXC, "ArithmeticException");
4103                         s390_brasl (code, s390_r14,0);
4104                         PTRSLOT(code, o);
4105                 }
4106                         break;
4107                 case OP_S390_MOVE: {
4108                         if (ins->backend.size > 0) {
4109                                 if (ins->backend.size <= 256) {
4110                                         s390_mvc  (code, ins->backend.size, ins->dreg,
4111                                                    ins->inst_offset, ins->sreg1, ins->inst_imm);
4112                                 } else {
4113                                         s390_lgr  (code, s390_r0, ins->dreg);
4114                                         if (s390_is_imm16 (ins->inst_offset)) {
4115                                                 s390_aghi (code, s390_r0, ins->inst_offset);
4116                                         } else {
4117                                                 s390_basr (code, s390_r13, 0);
4118                                                 s390_j    (code, 6);
4119                                                 s390_llong(code, ins->inst_offset);
4120                                                 s390_a    (code, s390_r0, 0, s390_r13, 4);
4121                                         }
4122                                         s390_lgr  (code, s390_r12, ins->sreg1);
4123                                         if (s390_is_imm16 (ins->inst_imm)) {
4124                                                 s390_aghi (code, s390_r12, ins->inst_imm);
4125                                         } else {
4126                                                 s390_basr (code, s390_r13, 0);
4127                                                 s390_j    (code, 6);
4128                                                 s390_llong(code, ins->inst_imm);
4129                                                 s390_ag   (code, s390_r12, 0, s390_r13, 4);
4130                                         }
4131                                         s390_lgr  (code, s390_r1, ins->sreg1);
4132                                         s390_lgr  (code, s390_r13, s390_r1);
4133                                         s390_mvcle(code, s390_r0, s390_r12, 0, 0);
4134                                         s390_jo   (code, -2);
4135                                 }
4136                         }
4137                 }
4138                         break;
4139                 case OP_ATOMIC_ADD_I8: {
4140                         s390_lgr (code, s390_r1, ins->sreg2);
4141                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4142                         s390_agr (code, s390_r1, s390_r0);
4143                         s390_csg (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4144                         s390_jnz (code, -10);
4145                         s390_lgr (code, ins->dreg, s390_r1);
4146                 }
4147                         break;
4148                 case OP_ATOMIC_ADD_NEW_I8: {
4149                         s390_lgr (code, s390_r1, ins->sreg2);
4150                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4151                         s390_agr (code, s390_r1, s390_r0);
4152                         s390_csg (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4153                         s390_jnz (code, -10);
4154                         s390_lgr (code, ins->dreg, s390_r1);
4155                 }
4156                         break;
4157                 case OP_ATOMIC_EXCHANGE_I8: {
4158                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4159                         s390_csg (code, s390_r0, ins->sreg2, ins->inst_basereg, ins->inst_offset);
4160                         s390_jnz (code, -6);
4161                         s390_lgr (code, ins->dreg, s390_r0);
4162                 }
4163                         break;
4164                 case OP_ATOMIC_ADD_I4: {
4165                         s390_lgfr(code, s390_r1, ins->sreg2);
4166                         s390_lgf (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4167                         s390_agr (code, s390_r1, s390_r0);
4168                         s390_cs  (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4169                         s390_jnz (code, -9);
4170                         s390_lgfr(code, ins->dreg, s390_r1);
4171                 }
4172                         break;
4173                 case OP_ATOMIC_ADD_NEW_I4: {
4174                         s390_lgfr(code, s390_r1, ins->sreg2);
4175                         s390_lgf (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4176                         s390_agr (code, s390_r1, s390_r0);
4177                         s390_cs  (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4178                         s390_jnz (code, -9);
4179                         s390_lgfr(code, ins->dreg, s390_r1);
4180                 }
4181                         break;
4182                 case OP_ATOMIC_EXCHANGE_I4: {
4183                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4184                         s390_cs  (code, s390_r0, ins->sreg2, ins->inst_basereg, ins->inst_offset);
4185                         s390_jnz (code, -4);
4186                         s390_lgfr(code, ins->dreg, s390_r0);
4187                 }
4188                         break;
4189                 case OP_S390_BKCHAIN: {
4190                         s390_lgr  (code, ins->dreg, ins->sreg1);
4191                         if (s390_is_imm16 (cfg->stack_offset)) {
4192                                 s390_aghi (code, ins->dreg, cfg->stack_offset);
4193                         } else {
4194                                 s390_basr (code, s390_r13, 0);
4195                                 s390_j    (code, 6);
4196                                 s390_llong(code, cfg->stack_offset);
4197                                 s390_ag   (code, ins->dreg, 0, s390_r13, 4);
4198                         }
4199                 }
4200                         break;
4201                 case OP_MEMORY_BARRIER: {
4202                 }
4203                         break;
4204                 default:
4205                         g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4206                         g_assert_not_reached ();
4207                 }
4208
4209                 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4210                         g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %ld)",
4211                                    mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4212                         g_assert_not_reached ();
4213                 }
4214
4215                 cpos += max_len;
4216
4217                 last_ins = ins;
4218                 last_offset = offset;
4219
4220                 ins = ins->next;
4221         }
4222
4223         cfg->code_len = code - cfg->native_code;
4224 }
4225
4226 /*========================= End of Function ========================*/
4227
4228 /*------------------------------------------------------------------*/
4229 /*                                                                  */
4230 /* Name         - mono_arch_register_lowlevel_calls                 */
4231 /*                                                                  */
4232 /* Function     - Register routines to help with --trace operation. */
4233 /*                                                                  */
4234 /*------------------------------------------------------------------*/
4235
4236 void
4237 mono_arch_register_lowlevel_calls (void)
4238 {
4239         mono_register_jit_icall (mono_arch_break, "mono_arch_break", NULL, TRUE);
4240         mono_register_jit_icall (mono_arch_get_lmf_addr, "mono_arch_get_lmf_addr", NULL, TRUE);
4241 }
4242
4243 /*========================= End of Function ========================*/
4244
4245 /*------------------------------------------------------------------*/
4246 /*                                                                  */
4247 /* Name         - mono_arch_break                                   */
4248 /*                                                                  */
4249 /* Function     - Process a "break" operation for debugging.        */
4250 /*                                                                  */
4251 /*------------------------------------------------------------------*/
4252
4253 static void
4254 mono_arch_break(void) {
4255 }
4256
4257 /*========================= End of Function ========================*/
4258
4259 /*------------------------------------------------------------------*/
4260 /*                                                                  */
4261 /* Name         - mono_arch_patch_code                              */
4262 /*                                                                  */
4263 /* Function     - Process the patch data created during the         */
4264 /*                instruction build process. This resolves jumps,   */
4265 /*                calls, variables etc.                             */
4266 /*                                                                  */
4267 /*------------------------------------------------------------------*/
4268
4269 void
4270 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain,
4271                       guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4272 {
4273         MonoJumpInfo *patch_info;
4274
4275         for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4276                 unsigned char *ip = patch_info->ip.i + code;
4277                 gconstpointer target = NULL;
4278
4279                 target = mono_resolve_patch_target (method, domain, code,
4280                                                     patch_info, run_cctors);
4281
4282                 switch (patch_info->type) {
4283                         case MONO_PATCH_INFO_IP:
4284                         case MONO_PATCH_INFO_EXC_NAME:
4285                         case MONO_PATCH_INFO_LDSTR:
4286                         case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
4287                         case MONO_PATCH_INFO_LDTOKEN:
4288                         case MONO_PATCH_INFO_EXC:
4289                         case MONO_PATCH_INFO_ABS:
4290                         case MONO_PATCH_INFO_METHOD:
4291                         case MONO_PATCH_INFO_INTERNAL_METHOD:
4292                         case MONO_PATCH_INFO_CLASS_INIT:
4293                                 s390_patch_addr (ip, (guint64) target);
4294                                 continue;
4295                         case MONO_PATCH_INFO_SWITCH:
4296                                 /*----------------------------------*/
4297                                 /* ip points at the basr r13,0/j +4 */
4298                                 /* instruction the vtable value     */
4299                                 /* follows this (i.e. ip+6)         */
4300                                 /*----------------------------------*/
4301                                 *((gconstpointer *)(ip+6)) = target;
4302                                 continue;
4303                         case MONO_PATCH_INFO_METHODCONST:
4304                         case MONO_PATCH_INFO_CLASS:
4305                         case MONO_PATCH_INFO_IMAGE:
4306                         case MONO_PATCH_INFO_FIELD:
4307                         case MONO_PATCH_INFO_IID:
4308                                 target = S390_RELATIVE(target, ip);
4309                                 s390_patch_rel (ip, (guint64) target);
4310                                 continue;
4311                         case MONO_PATCH_INFO_R4:
4312                         case MONO_PATCH_INFO_R8:
4313                         case MONO_PATCH_INFO_METHOD_REL:
4314                                 g_assert_not_reached ();
4315                                 continue;
4316                         default:
4317                                 target = S390_RELATIVE(target, ip);
4318                                 ip += 2;
4319                                 s390_patch_rel (ip, (guint64) target);
4320                 }
4321         }
4322 }
4323
4324 /*========================= End of Function ========================*/
4325
4326 /*------------------------------------------------------------------*/
4327 /*                                                                  */
4328 /* Name         - emit_load_volatile_registers                      */
4329 /*                                                                  */
4330 /* Function     - Emit the instructions to reload parameter regist- */
4331 /*                registers for use with "tail" operations.         */
4332 /*                                                                  */
4333 /*                The register loading operations performed here    */
4334 /*                are the mirror of the store operations performed  */
4335 /*                in mono_arch_emit_prolog and need to be kept in   */
4336 /*                synchronization with it.                          */
4337 /*                                                                  */
4338 /*------------------------------------------------------------------*/
4339
4340 guint8 *
4341 emit_load_volatile_registers (guint8 *code, MonoCompile *cfg)
4342 {
4343         MonoInst *inst;
4344         MonoMethod *method = cfg->method;
4345         MonoMethodSignature *sig = mono_method_signature(method);
4346         int pos = 0, i;
4347         CallInfo *cinfo;
4348         size_data sz;
4349
4350         cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4351
4352         if (cinfo->struct_ret) {
4353                 ArgInfo *ainfo = &cinfo->ret;
4354                 inst         = cfg->ret;
4355                 s390_lg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4356         }
4357
4358         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4359                 ArgInfo *ainfo = cinfo->args + i;
4360                 inst = cfg->varinfo [pos];
4361
4362                 if (inst->opcode == OP_REGVAR) {
4363                         if (ainfo->regtype == RegTypeGeneral)
4364                                 s390_lgr (code, ainfo->reg, inst->dreg);
4365                         else if (ainfo->regtype == RegTypeFP) {
4366                                 if (inst->dreg != ainfo->reg) {
4367                                         if (ainfo->size == 4) {
4368                                                 s390_ldebr (code, ainfo->reg, inst->dreg);
4369                                         } else {
4370                                                 s390_ldr   (code, ainfo->reg, inst->dreg);
4371                                         }
4372                                 }
4373                         }
4374                         else if (ainfo->regtype == RegTypeBase) {
4375                         } else
4376                                 g_assert_not_reached ();
4377                 } else {
4378                         if (ainfo->regtype == RegTypeGeneral) {
4379                                 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4380                                         g_assert_not_reached();
4381                                 switch (ainfo->size) {
4382                                 case 1:
4383                                         s390_llgc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4384                                         break;
4385                                 case 2:
4386                                         s390_lgh  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4387                                         break;
4388                                 case 4:
4389                                         s390_lgf (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4390                                         break;
4391                                 case 8:
4392                                         s390_lg  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4393                                         break;
4394                                 }
4395                         } else if (ainfo->regtype == RegTypeBase) {
4396                         } else if (ainfo->regtype == RegTypeFP) {
4397                                 if (ainfo->size == 8)
4398                                         s390_ld  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4399                                 else if (ainfo->size == 4)
4400                                         s390_le  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4401                                 else
4402                                         g_assert_not_reached ();
4403                         } else if (ainfo->regtype == RegTypeStructByVal) {
4404                                 if (ainfo->reg != STK_BASE) {
4405                                         switch (ainfo->size) {
4406                                         case 1:
4407                                                 s390_llgc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4408                                                 break;
4409                                         case 2:
4410                                                 s390_lgh (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4411                                                 break;
4412                                         case 4:
4413                                                 s390_lgf (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4414                                                 break;
4415                                         case 8:
4416                                                 s390_lg  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4417                                                 break;
4418                                         }
4419                                 }
4420                         } else if (ainfo->regtype == RegTypeStructByAddr) {
4421                                 if (ainfo->reg != STK_BASE) {
4422                                         s390_lg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4423                                 }
4424                         } else
4425                                 g_assert_not_reached ();
4426                 }
4427                 pos++;
4428         }
4429
4430         g_free (cinfo);
4431
4432         return code;
4433 }
4434
4435 /*========================= End of Function ========================*/
4436
4437 /*------------------------------------------------------------------*/
4438 /*                                                                  */
4439 /* Name         - mono_arch_emit_prolog                             */
4440 /*                                                                  */
4441 /* Function     - Create the instruction sequence for a function    */
4442 /*                prolog.                                           */
4443 /*                                                                  */
4444 /*------------------------------------------------------------------*/
4445
4446 guint8 *
4447 mono_arch_emit_prolog (MonoCompile *cfg)
4448 {
4449         MonoMethod *method = cfg->method;
4450         MonoBasicBlock *bb;
4451         MonoMethodSignature *sig;
4452         MonoInst *inst;
4453         int alloc_size, pos, max_offset, i;
4454         guint8 *code;
4455         CallInfo *cinfo;
4456         size_data sz;
4457         int tracing = 0;
4458         int lmfOffset;
4459
4460         cfg->code_size   = 512;
4461
4462         if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
4463                 tracing         = 1;
4464                 cfg->code_size += 256;
4465         }
4466
4467         if (method->save_lmf)
4468                 cfg->code_size += 200;
4469
4470         cfg->native_code = code = g_malloc (cfg->code_size);
4471
4472         s390_stmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4473
4474         if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4475                 cfg->used_int_regs |= 1 << 11;
4476         }
4477
4478         alloc_size = cfg->stack_offset;
4479
4480         cfg->stack_usage = alloc_size;
4481         s390_lgr  (code, s390_r11, STK_BASE);
4482         if (s390_is_uimm16 (alloc_size)) {
4483                 s390_aghi (code, STK_BASE, -alloc_size);
4484         } else {
4485                 int stackSize = alloc_size;
4486                 while (stackSize > 32767) {
4487                         s390_aghi (code, STK_BASE, -32767);
4488                         stackSize -= 32767;
4489                 }
4490                 s390_aghi (code, STK_BASE, -stackSize);
4491         }
4492         s390_stg  (code, s390_r11, 0, STK_BASE, 0);
4493
4494         if (cfg->frame_reg != STK_BASE)
4495                 s390_lgr (code, s390_r11, STK_BASE);
4496
4497         /* compute max_offset in order to use short forward jumps
4498          * we always do it on s390 because the immediate displacement
4499          * for jumps is too small
4500          */
4501         max_offset = 0;
4502         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4503                 MonoInst *ins = bb->code;
4504                 bb->max_offset = max_offset;
4505
4506                 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4507                         max_offset += 6;
4508
4509                 while (ins) {
4510                         max_offset += ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
4511                         ins = ins->next;
4512                 }
4513         }
4514
4515         /* load arguments allocated to register from the stack */
4516         sig = mono_method_signature (method);
4517         pos = 0;
4518
4519         cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4520
4521         if (cinfo->struct_ret) {
4522                 ArgInfo *ainfo = &cinfo->ret;
4523                 inst         = cfg->ret;
4524                 inst->backend.size = ainfo->vtsize;
4525                 s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4526         }
4527
4528         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4529                 ArgInfo *ainfo = cinfo->args + i;
4530                 inst = cfg->varinfo [pos];
4531
4532                 if (inst->opcode == OP_REGVAR) {
4533                         if (ainfo->regtype == RegTypeGeneral)
4534                                 s390_lgr (code, inst->dreg, ainfo->reg);
4535                         else if (ainfo->regtype == RegTypeFP) {
4536                                 if (inst->dreg != ainfo->reg) {
4537                                         if (ainfo->size == 4) {
4538                                                 s390_ledbr (code, inst->dreg, ainfo->reg);
4539                                         } else {
4540                                                 s390_ldr   (code, inst->dreg, ainfo->reg);
4541                                         }
4542                                 }
4543                         }
4544                         else if (ainfo->regtype == RegTypeBase) {
4545                                 s390_lgr  (code, s390_r13, STK_BASE);
4546                                 s390_aghi (code, s390_r13, alloc_size);
4547                                 s390_lg   (code, inst->dreg, 0, s390_r13, ainfo->offset);
4548                         } else
4549                                 g_assert_not_reached ();
4550
4551                         if (cfg->verbose_level > 2)
4552                                 g_print ("Argument %d assigned to register %s\n",
4553                                          pos, mono_arch_regname (inst->dreg));
4554                 } else {
4555                         if (ainfo->regtype == RegTypeGeneral) {
4556                                 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4557                                         g_assert_not_reached();
4558                                 switch (ainfo->size) {
4559                                 case 1:
4560                                         s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4561                                         break;
4562                                 case 2:
4563                                         s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4564                                         break;
4565                                 case 4:
4566                                         s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4567                                         break;
4568                                 case 8:
4569                                         s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4570                                         break;
4571                                 }
4572                         } else if (ainfo->regtype == RegTypeBase) {
4573                         } else if (ainfo->regtype == RegTypeFP) {
4574                                 if (ainfo->size == 8)
4575                                         s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4576                                 else if (ainfo->size == 4)
4577                                         s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4578                                 else
4579                                         g_assert_not_reached ();
4580                         } else if (ainfo->regtype == RegTypeStructByVal) {
4581                                 int doffset = inst->inst_offset;
4582                                 int reg;
4583                                 if (ainfo->reg != STK_BASE)
4584                                         reg = ainfo->reg;
4585                                 else {
4586                                         reg = s390_r0;
4587                                         s390_lgr  (code, s390_r13, STK_BASE);
4588                                         s390_aghi (code, s390_r13, alloc_size);
4589                                 }
4590                                 switch (ainfo->size) {
4591                                         case 1:
4592                                                 if (ainfo->reg == STK_BASE)
4593                                                         s390_ic (code, reg, 0, s390_r13, ainfo->offset+7);
4594                                                 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4595                                                 break;
4596                                         case 2:
4597                                                 if (ainfo->reg == STK_BASE)
4598                                                         s390_lh (code, reg, 0, s390_r13, ainfo->offset+6);
4599                                                 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4600                                                 break;
4601                                         case 4:
4602                                                 if (ainfo->reg == STK_BASE)
4603                                                         s390_l  (code, reg, 0, s390_r13, ainfo->offset+4);
4604                                                 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4605                                                 break;
4606                                         case 8:
4607                                                 if (ainfo->reg == STK_BASE)
4608                                                         s390_lg  (code, reg, 0, s390_r13, ainfo->offset);
4609                                                 s390_stg (code, reg, 0, inst->inst_basereg, doffset);
4610                                                 break;
4611                                 }
4612                         } else if (ainfo->regtype == RegTypeStructByAddr) {
4613                                 s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4614                         } else
4615                                 g_assert_not_reached ();
4616                 }
4617                 pos++;
4618         }
4619
4620         if (method->save_lmf) {
4621                 /*---------------------------------------------------------------*/
4622                 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4623                 /*---------------------------------------------------------------*/
4624                 lmfOffset = alloc_size - sizeof(MonoLMF);
4625
4626                 s390_lgr   (code, s390_r13, cfg->frame_reg);
4627                 s390_aghi  (code, s390_r13, lmfOffset);
4628
4629                 /*---------------------------------------------------------------*/
4630                 /* Preserve the parameter registers while we fix up the lmf      */
4631                 /*---------------------------------------------------------------*/
4632                 s390_stmg  (code, s390_r2, s390_r6, s390_r13,
4633                             G_STRUCT_OFFSET(MonoLMF, pregs[0]));
4634
4635                 /*---------------------------------------------------------------*/
4636                 /* On return from this call r2 have the address of the &lmf      */
4637                 /*---------------------------------------------------------------*/
4638                 s390_basr(code, s390_r10, 0);
4639                 s390_j   (code, 6);
4640                 mono_add_patch_info (cfg, code - cfg->native_code,
4641                                      MONO_PATCH_INFO_INTERNAL_METHOD,
4642                                      (gpointer)"mono_get_lmf_addr");
4643                 s390_llong(code, 0);
4644                 s390_lg   (code, s390_r1, 0, s390_r10, 4);
4645                 s390_basr (code, s390_r14, s390_r1);
4646
4647                 /*---------------------------------------------------------------*/
4648                 /* Set lmf.lmf_addr = jit_tls->lmf                               */
4649                 /*---------------------------------------------------------------*/
4650                 s390_stg   (code, s390_r2, 0, s390_r13,
4651                             G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4652
4653                 /*---------------------------------------------------------------*/
4654                 /* Get current lmf                                               */
4655                 /*---------------------------------------------------------------*/
4656                 s390_lg    (code, s390_r0, 0, s390_r2, 0);
4657
4658                 /*---------------------------------------------------------------*/
4659                 /* Set our lmf as the current lmf                                */
4660                 /*---------------------------------------------------------------*/
4661                 s390_stg   (code, s390_r13, 0, s390_r2, 0);
4662
4663                 /*---------------------------------------------------------------*/
4664                 /* Have our lmf.previous_lmf point to the last lmf               */
4665                 /*---------------------------------------------------------------*/
4666                 s390_stg   (code, s390_r0, 0, s390_r13,
4667                             G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4668
4669                 /*---------------------------------------------------------------*/
4670                 /* save method info                                              */
4671                 /*---------------------------------------------------------------*/
4672                 s390_basr  (code, s390_r1, 0);
4673                 s390_j     (code, 6);
4674                 s390_llong (code, method);
4675                 s390_lg    (code, s390_r1, 0, s390_r1, 4);
4676                 s390_stg   (code, s390_r1, 0, s390_r13,
4677                             G_STRUCT_OFFSET(MonoLMF, method));
4678
4679                 /*---------------------------------------------------------------*/
4680                 /* save the current IP                                           */
4681                 /*---------------------------------------------------------------*/
4682                 s390_stg   (code, STK_BASE, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
4683                 s390_basr  (code, s390_r1, 0);
4684                 s390_stg   (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
4685
4686                 /*---------------------------------------------------------------*/
4687                 /* Save general and floating point registers                     */
4688                 /*---------------------------------------------------------------*/
4689                 s390_stmg  (code, s390_r2, s390_r12, s390_r13,
4690                             G_STRUCT_OFFSET(MonoLMF, gregs[2]));
4691                 for (i = 0; i < 16; i++) {
4692                         s390_std  (code, i, 0, s390_r13,
4693                                    G_STRUCT_OFFSET(MonoLMF, fregs[i]));
4694                 }
4695
4696                 /*---------------------------------------------------------------*/
4697                 /* Restore the parameter registers now that we've set up the lmf */
4698                 /*---------------------------------------------------------------*/
4699                 s390_lmg   (code, s390_r2, s390_r6, s390_r13,
4700                             G_STRUCT_OFFSET(MonoLMF, pregs[0]));
4701         }
4702
4703         if (tracing)
4704                 code = mono_arch_instrument_prolog(cfg, enter_method, code, TRUE);
4705
4706         cfg->code_len = code - cfg->native_code;
4707         g_assert (cfg->code_len < cfg->code_size);
4708
4709         g_free (cinfo);
4710
4711         return code;
4712 }
4713
4714 /*========================= End of Function ========================*/
4715
4716 /*------------------------------------------------------------------*/
4717 /*                                                                  */
4718 /* Name         - mono_arch_emit_epilog                             */
4719 /*                                                                  */
4720 /* Function     - Emit the instructions for a function epilog.      */
4721 /*                                                                  */
4722 /*------------------------------------------------------------------*/
4723
4724 void
4725 mono_arch_emit_epilog (MonoCompile *cfg)
4726 {
4727         MonoMethod *method = cfg->method;
4728         int tracing = 0;
4729         guint8 *code;
4730         int max_epilog_size = 96;
4731
4732         if (cfg->method->save_lmf)
4733                 max_epilog_size += 128;
4734
4735         if (mono_jit_trace_calls != NULL)
4736                 max_epilog_size += 128;
4737
4738         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
4739                 max_epilog_size += 128;
4740
4741         while ((cfg->code_len + max_epilog_size) > (cfg->code_size - 16)) {
4742                 cfg->code_size  *= 2;
4743                 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
4744                 mono_jit_stats.code_reallocs++;
4745         }
4746
4747         code = cfg->native_code + cfg->code_len;
4748
4749         if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
4750                 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
4751                 tracing = 1;
4752         }
4753
4754         if (method->save_lmf)
4755                 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
4756
4757         if (cfg->flags & MONO_CFG_HAS_ALLOCA)
4758                 s390_lg  (code, STK_BASE, 0, STK_BASE, 0);
4759         else
4760                 code = backUpStackPtr(cfg, code);
4761
4762         s390_lmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4763         s390_br  (code, s390_r14);
4764
4765         cfg->code_len = code - cfg->native_code;
4766
4767         g_assert (cfg->code_len < cfg->code_size);
4768
4769 }
4770
4771 /*========================= End of Function ========================*/
4772
4773 /*------------------------------------------------------------------*/
4774 /*                                                                  */
4775 /* Name         - mono_arch_emit_exceptions                         */
4776 /*                                                                  */
4777 /* Function     - Emit the blocks to handle exception conditions.   */
4778 /*                                                                  */
4779 /*------------------------------------------------------------------*/
4780
4781 void
4782 mono_arch_emit_exceptions (MonoCompile *cfg)
4783 {
4784         MonoJumpInfo    *patch_info;
4785         guint8          *code;
4786         int             nThrows = 0,
4787                         exc_count = 0,
4788                         iExc;
4789         guint32         code_size;
4790         MonoClass       *exc_classes [MAX_EXC];
4791         guint8          *exc_throw_start [MAX_EXC],
4792                         *exc_throw_end [MAX_EXC];
4793
4794         for (patch_info = cfg->patch_info;
4795              patch_info;
4796              patch_info = patch_info->next) {
4797                 if (patch_info->type == MONO_PATCH_INFO_EXC)
4798                         exc_count++;
4799         }
4800
4801         code_size = exc_count * 48;
4802
4803         while ((cfg->code_len + code_size) > (cfg->code_size - 16)) {
4804                 cfg->code_size  *= 2;
4805                 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
4806                 mono_jit_stats.code_reallocs++;
4807         }
4808
4809         code = cfg->native_code + cfg->code_len;
4810
4811         /*---------------------------------------------------------------------*/
4812         /* Add code to raise exceptions                                        */
4813         /*---------------------------------------------------------------------*/
4814         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4815                 switch (patch_info->type) {
4816                 case MONO_PATCH_INFO_EXC: {
4817                         guint8 *ip = patch_info->ip.i + cfg->native_code;
4818                         MonoClass *exc_class;
4819                         guint64 throw_ip;
4820
4821                         /*-----------------------------------------------------*/
4822                         /* Patch the branch in epilog to come here             */
4823                         /*-----------------------------------------------------*/
4824                         s390_patch_rel (ip + 2, (guint64) S390_RELATIVE(code,ip));
4825
4826                         exc_class = mono_class_from_name (mono_defaults.corlib,
4827                                                           "System",
4828                                                           patch_info->data.name);
4829                         g_assert (exc_class);
4830                         throw_ip = patch_info->ip.i;
4831
4832                         for (iExc = 0; iExc < nThrows; ++iExc)
4833                                 if (exc_classes [iExc] == exc_class)
4834                                         break;
4835
4836                         if (iExc < nThrows) {
4837                                 s390_jcl (code, S390_CC_UN,
4838                                           (guint64) exc_throw_start [iExc]);
4839                                 patch_info->type = MONO_PATCH_INFO_NONE;
4840                         } else {
4841
4842                                 if (nThrows < MAX_EXC) {
4843                                         exc_classes [nThrows]     = exc_class;
4844                                         exc_throw_start [nThrows] = code;
4845                                 }
4846
4847                                 /*---------------------------------------------*/
4848                                 /* Patch the parameter passed to the handler   */
4849                                 /*---------------------------------------------*/
4850                                 s390_basr (code, s390_r13, 0);
4851                                 s390_j    (code, 6);
4852                                 s390_llong(code, patch_info->data.target);
4853                                 /*---------------------------------------------*/
4854                                 /* Load return address & parameter register    */
4855                                 /*---------------------------------------------*/
4856                                 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
4857                                                            cfg->native_code + 8), code));
4858                                 s390_lg   (code, s390_r2, 0, s390_r13, 4);
4859                                 /*---------------------------------------------*/
4860                                 /* Reuse the current patch to set the jump     */
4861                                 /*---------------------------------------------*/
4862                                 s390_basr (code, s390_r13, 0);
4863                                 s390_j    (code, 6);
4864                                 patch_info->type      = MONO_PATCH_INFO_INTERNAL_METHOD;
4865                                 patch_info->data.name = "mono_arch_throw_exception_by_name";
4866                                 patch_info->ip.i      = code - cfg->native_code;
4867                                 s390_llong(code, 0);
4868                                 s390_lg   (code, s390_r1, 0, s390_r13, 4);
4869                                 s390_br   (code, s390_r1);
4870                         }
4871                         break;
4872                 }
4873                 default:
4874                         /* do nothing */
4875                         break;
4876                 }
4877         }
4878
4879         cfg->code_len = code - cfg->native_code;
4880
4881         g_assert (cfg->code_len < cfg->code_size);
4882
4883 }
4884
4885 /*========================= End of Function ========================*/
4886
4887 /*------------------------------------------------------------------*/
4888 /*                                                                  */
4889 /* Name         - mono_arch_setup_jit_tls_data                      */
4890 /*                                                                  */
4891 /* Function     - Setup the JIT's Thread Level Specific Data.       */
4892 /*                                                                  */
4893 /*------------------------------------------------------------------*/
4894
4895 void
4896 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
4897 {
4898         if (!tls_offset_inited) {
4899                 tls_offset_inited = TRUE;
4900
4901 #if HAVE_KW_THREAD
4902 # if 0
4903         __asm__ ("\tear\t%r1,0\n"
4904                  "\tlr\t%0,%3\n"
4905                  "\tsr\t%0,%r1\n"
4906                  "\tlr\t%1,%4\n"
4907                  "\tsr\t%1,%r1\n"
4908                  "\tlr\t%2,%5\n"
4909                  "\tsr\t%2,%r1\n"
4910                  : "=r" (appdomain_tls_offset),
4911                    "=r" (thread_tls_offset),
4912                    "=r" (lmf_tls_offset)
4913                  : "r" (&tls_appdomain),
4914                    "r" (&tls_current_object),
4915                    "r" (&mono_lmf_addr)
4916                  : "1", "cc");
4917 # endif
4918 #endif
4919         }
4920
4921         if (!lmf_addr_key_inited) {
4922                 lmf_addr_key_inited = TRUE;
4923                 pthread_key_create (&lmf_addr_key, NULL);
4924         }
4925         pthread_setspecific (lmf_addr_key, &tls->lmf);
4926
4927 }
4928
4929 /*========================= End of Function ========================*/
4930
4931 /*------------------------------------------------------------------*/
4932 /*                                                                  */
4933 /* Name         - mono_arch_free_jit_tls_data                       */
4934 /*                                                                  */
4935 /* Function     - Free tls data.                                    */
4936 /*                                                                  */
4937 /*------------------------------------------------------------------*/
4938
4939 void
4940 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
4941 {
4942
4943 }
4944
4945 /*========================= End of Function ========================*/
4946
4947 /*------------------------------------------------------------------*/
4948 /*                                                                  */
4949 /* Name         - mono_arch_emit_this_vret_args                     */
4950 /*                                                                  */
4951 /* Function     -                                                   */
4952 /*                                                                  */
4953 /*------------------------------------------------------------------*/
4954
4955 void
4956 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
4957 {
4958         int this_dreg = s390_r2;
4959
4960         if (vt_reg != -1)
4961                 this_dreg = s390_r3;
4962
4963         /* add the this argument */
4964         if (this_reg != -1) {
4965                 MonoInst *this;
4966                 MONO_INST_NEW (cfg, this, OP_SETREG);
4967                 this->type  = this_type;
4968                 this->sreg1 = this_reg;
4969                 this->dreg  = mono_regstate_next_int (cfg->rs);
4970                 mono_bblock_add_inst (cfg->cbb, this);
4971                 mono_call_inst_add_outarg_reg (cfg, inst, this->dreg, this_dreg, FALSE);
4972         }
4973
4974         if (vt_reg != -1) {
4975                 MonoInst *vtarg;
4976                 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
4977                 vtarg->type  = STACK_MP;
4978                 vtarg->sreg1 = vt_reg;
4979                 vtarg->dreg  = mono_regstate_next_int (cfg->rs);
4980                 mono_bblock_add_inst (cfg->cbb, vtarg);
4981                 mono_call_inst_add_outarg_reg (cfg, inst, vtarg->dreg, s390_r2, FALSE);
4982         }
4983 }
4984
4985 /*========================= End of Function ========================*/
4986
4987 /*------------------------------------------------------------------*/
4988 /*                                                                  */
4989 /* Name         - mono_arch_get_inst_for_method                   */
4990 /*                                                                  */
4991 /* Function     - Check for opcodes we can handle directly in       */
4992 /*                hardware.                                         */
4993 /*                                                                  */
4994 /*------------------------------------------------------------------*/
4995
4996 MonoInst*
4997 mono_arch_get_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod,
4998                                MonoMethodSignature *fsig, MonoInst **args)
4999 {
5000         MonoInst *ins = NULL;
5001
5002         if (cmethod->klass == mono_defaults.math_class) {
5003                 if (strcmp (cmethod->name, "Sqrt") == 0) {
5004                         MONO_INST_NEW (cfg, ins, OP_SQRT);
5005                         ins->inst_i0 = args [0];
5006                 }
5007 //              if (strcmp (cmethod->name, "Abs") == 0) {
5008 //                      MONO_INST_NEW (cfg, ins, OP_ABS);
5009 //                      ins->inst_i0 = args [0];
5010 //              }
5011         } else if (cmethod->klass == mono_defaults.thread_class &&
5012                            strcmp (cmethod->name, "MemoryBarrier") == 0) {
5013                 MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5014         } else if(cmethod->klass->image == mono_defaults.corlib &&
5015                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5016                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5017
5018                 if (strcmp (cmethod->name, "Increment") == 0) {
5019                         MonoInst *ins_iconst;
5020                         guint32 opcode = 0;
5021
5022                         if (fsig->params [0]->type == MONO_TYPE_I4)
5023                                 opcode = OP_ATOMIC_ADD_NEW_I4;
5024                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5025                                 opcode = OP_ATOMIC_ADD_NEW_I8;
5026                         else
5027                                 g_assert_not_reached ();
5028
5029                         MONO_INST_NEW (cfg, ins, opcode);
5030                         MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5031                         ins_iconst->inst_c0 = 1;
5032
5033                         ins->inst_i0 = args [0];
5034                         ins->inst_i1 = ins_iconst;
5035                 } else if (strcmp (cmethod->name, "Decrement") == 0) {
5036                         MonoInst *ins_iconst;
5037                         guint32 opcode = 0;
5038
5039                         if (fsig->params [0]->type == MONO_TYPE_I4)
5040                                 opcode = OP_ATOMIC_ADD_NEW_I4;
5041                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5042                                 opcode = OP_ATOMIC_ADD_NEW_I8;
5043                         else
5044                                 g_assert_not_reached ();
5045                         MONO_INST_NEW (cfg, ins, opcode);
5046                         MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5047                         ins_iconst->inst_c0 = -1;
5048
5049                         ins->inst_i0 = args [0];
5050                         ins->inst_i1 = ins_iconst;
5051                         /* FIXME: */
5052                 } else if (strcmp (cmethod->name, "Exchange") == 0) {
5053                         guint32 opcode = 0;
5054
5055                         if (fsig->params [0]->type == MONO_TYPE_I4)
5056                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5057                         else if ((fsig->params [0]->type == MONO_TYPE_I8) ||
5058                                          (fsig->params [0]->type == MONO_TYPE_I) ||
5059                                          (fsig->params [0]->type == MONO_TYPE_OBJECT))
5060                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5061                         else
5062                                 return NULL;
5063
5064                         MONO_INST_NEW (cfg, ins, opcode);
5065
5066                         ins->inst_i0 = args [0];
5067                         ins->inst_i1 = args [1];
5068                 } else if (strcmp (cmethod->name, "Add") == 0) {
5069                         guint32 opcode = 0;
5070
5071                         if (fsig->params [0]->type == MONO_TYPE_I4)
5072                                 opcode = OP_ATOMIC_ADD_I4;
5073                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5074                                 opcode = OP_ATOMIC_ADD_I8;
5075                         else
5076                                 g_assert_not_reached ();
5077
5078                         MONO_INST_NEW (cfg, ins, opcode);
5079
5080                         ins->inst_i0 = args [0];
5081                         ins->inst_i1 = args [1];
5082                 } else if ((strcmp (cmethod->name, "Read") == 0 &&
5083                            (fsig->params [0]->type == MONO_TYPE_I8))) {
5084                         MONO_INST_NEW (cfg, ins, CEE_LDIND_I8);
5085                         ins->inst_i0 = args [0];
5086                 }
5087         }
5088         return ins;
5089 }
5090
5091 /*========================= End of Function ========================*/
5092
5093 /*------------------------------------------------------------------*/
5094 /*                                                                  */
5095 /* Name         - mono_arch_print_tree                              */
5096 /*                                                                  */
5097 /* Function     - Print platform-specific opcode details.           */
5098 /*                                                                  */
5099 /* Returns      - 1 - opcode details have been printed              */
5100 /*                0 - opcode details have not been printed          */
5101 /*                                                                  */
5102 /*------------------------------------------------------------------*/
5103
5104 gboolean
5105 mono_arch_print_tree (MonoInst *tree, int arity)
5106 {
5107         gboolean done;
5108
5109         switch (tree->opcode) {
5110                 case OP_S390_LOADARG:
5111                 case OP_S390_ARGREG:
5112                 case OP_S390_ARGPTR:
5113                         printf ("[0x%lx(%s)]", tree->inst_offset,
5114                                 mono_arch_regname (tree->inst_basereg));
5115                         done = 1;
5116                         break;
5117                 case OP_S390_STKARG:
5118                         printf ("[0x%lx(previous_frame)]",
5119                                 tree->inst_offset);
5120                         done = 1;
5121                         break;
5122                 case OP_S390_MOVE:
5123                         printf ("[0x%lx(%d,%s),0x%lx(%s)]",
5124                                 tree->inst_offset, tree->backend.size,
5125                                 mono_arch_regname(tree->dreg),
5126                                 tree->inst_imm,
5127                                 mono_arch_regname(tree->sreg1));
5128                         done = 1;
5129                         break;
5130                 case OP_S390_SETF4RET:
5131                         printf ("[f%s,f%s]",
5132                                 mono_arch_regname (tree->dreg),
5133                                 mono_arch_regname (tree->sreg1));
5134                         done = 1;
5135                         break;
5136                 case OP_TLS_GET:
5137                         printf ("[0x%lx(0x%lx,%s)]", tree->inst_offset,
5138                                 tree->inst_imm,
5139                                 mono_arch_regname (tree->sreg1));
5140                         done = 1;
5141                         break;
5142                 case OP_S390_BKCHAIN:
5143                         printf ("[previous_frame(%s)]",
5144                                 mono_arch_regname (tree->sreg1));
5145                         done = 1;
5146                 default:
5147                         done = 0;
5148         }
5149         return (done);
5150 }
5151
5152 /*========================= End of Function ========================*/
5153
5154 /*------------------------------------------------------------------*/
5155 /*                                                                  */
5156 /* Name         - mono_arch_regalloc_cost                           */
5157 /*                                                                  */
5158 /* Function     - Determine the cost, in the number of memory       */
5159 /*                references, of the action of allocating the var-  */
5160 /*                iable VMV into a register during global register  */
5161 /*                allocation.                                       */
5162 /*                                                                  */
5163 /* Returns      - Cost                                              */
5164 /*                                                                  */
5165 /*------------------------------------------------------------------*/
5166
5167 guint32
5168 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
5169 {
5170         /* FIXME: */
5171         return 2;
5172 }
5173
5174 /*========================= End of Function ========================*/
5175
5176 /*------------------------------------------------------------------*/
5177 /*                                                                  */
5178 /* Name         - mono_arch_get_domain_intrinsic                    */
5179 /*                                                                  */
5180 /* Function     -                                                   */
5181 /*                                                                  */
5182 /* Returns      -                                                   */
5183 /*                                                                  */
5184 /*------------------------------------------------------------------*/
5185
5186 MonoInst *
5187 mono_arch_get_domain_intrinsic (MonoCompile* cfg)
5188 {
5189         MonoInst *ins;
5190
5191         if (appdomain_tls_offset == -1)
5192                 return NULL;
5193
5194         MONO_INST_NEW (cfg, ins, OP_TLS_GET);
5195         ins->inst_offset = appdomain_tls_offset;
5196         return (ins);
5197 }
5198
5199 /*========================= End of Function ========================*/
5200
5201 /*------------------------------------------------------------------*/
5202 /*                                                                  */
5203 /* Name         - mono_arch_get_thread_intrinsic                    */
5204 /*                                                                  */
5205 /* Function     -                                                   */
5206 /*                                                                  */
5207 /* Returns      -                                                   */
5208 /*                                                                  */
5209 /*------------------------------------------------------------------*/
5210
5211 MonoInst *
5212 mono_arch_get_thread_intrinsic (MonoCompile* cfg)
5213 {
5214         MonoInst *ins;
5215
5216         if (thread_tls_offset == -1)
5217                 return NULL;
5218
5219         MONO_INST_NEW (cfg, ins, OP_TLS_GET);
5220         ins->inst_offset = thread_tls_offset;
5221         return (ins);
5222 }
5223
5224 /*========================= End of Function ========================*/
5225
5226 /*------------------------------------------------------------------*/
5227 /*                                                                  */
5228 /* Name         - mono_arch_flush_register_windows                  */
5229 /*                                                                  */
5230 /* Function     -                                                   */
5231 /*                                                                  */
5232 /* Returns      -                                                   */
5233 /*                                                                  */
5234 /*------------------------------------------------------------------*/
5235
5236 void
5237 mono_arch_flush_register_windows (void)
5238 {
5239 }
5240
5241 /*========================= End of Function ========================*/
5242
5243 /*------------------------------------------------------------------*/
5244 /*                                                                  */
5245 /* Name         - mono_arch_get_lmf_addr                            */
5246 /*                                                                  */
5247 /* Function     -                                                   */
5248 /*                                                                  */
5249 /* Returns      -                                                   */
5250 /*                                                                  */
5251 /*------------------------------------------------------------------*/
5252
5253 gpointer
5254 mono_arch_get_lmf_addr (void)
5255 {
5256         return pthread_getspecific (lmf_addr_key);
5257 }
5258
5259 /*========================= End of Function ========================*/
5260
5261 /*------------------------------------------------------------------*/
5262 /*                                                                  */
5263 /* Name         - mono_arch_is_inst_imm                             */
5264 /*                                                                  */
5265 /* Function     - Determine if operand qualifies as an immediate    */
5266 /*                value. For s390 this is a value -32768-32768      */
5267 /*                                                                  */
5268 /* Returns      - True|False - is [not] immediate value.            */
5269 /*                                                                  */
5270 /*------------------------------------------------------------------*/
5271
5272 gboolean
5273 mono_arch_is_inst_imm (gint64 imm)
5274 {
5275         return s390_is_imm16 (imm);
5276 }
5277
5278 /*========================= End of Function ========================*/
5279
5280 /*------------------------------------------------------------------*/
5281 /*                                                                  */
5282 /* Name         - opcode_to_cond                                    */
5283 /*                                                                  */
5284 /* Function     - Simplify the branch on condition opcode from      */
5285 /*                more than 20 to just a handful for easy manipu-   */
5286 /*                lation within the instruction emitting code.      */
5287 /*                                                                  */
5288 /* Returns      - CMP_xxx - this simplified condition type.         */
5289 /*                                                                  */
5290 /*------------------------------------------------------------------*/
5291
5292 static CompRelation
5293 opcode_to_cond (int opcode)
5294 {
5295         switch (opcode) {
5296         case CEE_BEQ:
5297         case OP_CEQ:
5298         case OP_IBEQ:
5299         case OP_ICEQ:
5300         case OP_FBEQ:
5301         case OP_FCEQ:
5302         case OP_COND_EXC_EQ:
5303                 return CMP_EQ;
5304         case CEE_BNE_UN:
5305         case OP_COND_EXC_NE_UN:
5306         case OP_IBNE_UN:
5307         case OP_FBNE_UN:
5308                 return CMP_NE;
5309         case CEE_BLE:
5310         case OP_IBLE:
5311         case OP_FBLE:
5312                 return CMP_LE;
5313         case CEE_BGE:
5314         case OP_IBGE:
5315         case OP_FBGE:
5316                 return CMP_GE;
5317         case CEE_BLT:
5318         case OP_COND_EXC_LT:
5319         case OP_CLT:
5320         case OP_IBLT:
5321         case OP_ICLT:
5322         case OP_FBLT:
5323         case OP_FCLT:
5324                 return CMP_LT;
5325         case CEE_BGT:
5326         case OP_COND_EXC_GT:
5327         case OP_CGT:
5328         case OP_IBGT:
5329         case OP_ICGT:
5330         case OP_FBGT:
5331         case OP_FCGT:
5332                 return CMP_GT;
5333
5334         case CEE_BLE_UN:
5335         case OP_COND_EXC_LE_UN:
5336         case OP_IBLE_UN:
5337         case OP_FBLE_UN:
5338                 return CMP_LE_UN;
5339         case CEE_BGE_UN:
5340         case OP_IBGE_UN:
5341         case OP_FBGE_UN:
5342                 return CMP_GE_UN;
5343         case CEE_BLT_UN:
5344         case OP_CLT_UN:
5345         case OP_IBLT_UN:
5346         case OP_ICLT_UN:
5347         case OP_FBLT_UN:
5348         case OP_FCLT_UN:
5349         case OP_COND_EXC_LT_UN:
5350                 return CMP_LT_UN;
5351         case CEE_BGT_UN:
5352         case OP_COND_EXC_GT_UN:
5353         case OP_CGT_UN:
5354         case OP_IBGT_UN:
5355         case OP_ICGT_UN:
5356         case OP_FCGT_UN:
5357         case OP_FBGT_UN:
5358                 return CMP_GT_UN;
5359         default:
5360                 printf ("%s\n", mono_inst_name (opcode));
5361                 g_error("Not implemented\n");
5362         }
5363         return CMP_EQ;
5364 }
5365
5366 /*========================= End of Function ========================*/
5367
5368 /*------------------------------------------------------------------*/
5369 /*                                                                  */
5370 /* Name         - mono_arch_get_patch_offset                        */
5371 /*                                                                  */
5372 /* Function     - Dummy entry point until s390x supports aot.       */
5373 /*                                                                  */
5374 /* Returns      - Offset for patch.                                 */
5375 /*                                                                  */
5376 /*------------------------------------------------------------------*/
5377
5378 guint32
5379 mono_arch_get_patch_offset (guint8 *code)
5380 {
5381         return 0;
5382 }
5383
5384 /*========================= End of Function ========================*/