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 EMIT_COND_BRANCH(ins,cond)                                                      \
  22 {                                                                                       \
  23 if (ins->flags & MONO_INST_BRLABEL) {                                                   \
  24         if (ins->inst_i0->inst_c0) {                                                    \
  25                 int displace;                                                           \
  26                 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2;     \
  27                 if (s390_is_imm16(displace)) {                                          \
  28                         s390_brc (code, cond, displace);                                \
  29                 } else {                                                                \
  30                         s390_jcl (code, cond, displace);                                \
  31                 }                                                                       \
  32         } else {                                                                        \
  33                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  34                                      MONO_PATCH_INFO_LABEL, ins->inst_i0);              \
  35                 s390_jcl (code, cond, 0);                                               \
  36         }                                                                               \
  37 } else {                                                                                \
  38         if (ins->inst_true_bb->native_offset) {                                         \
  39                 int displace;                                                           \
  40                 displace = ((cfg->native_code +                                         \
  41                             ins->inst_true_bb->native_offset) - code) / 2;              \
  42                 if (s390_is_imm16(displace)) {                                          \
  43                         s390_brc (code, cond, displace);                                \
  44                 } else {                                                                \
  45                         s390_jcl (code, cond, displace);                                \
  46                 }                                                                       \
  47         } else {                                                                        \
  48                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  49                                      MONO_PATCH_INFO_BB, ins->inst_true_bb);            \
  50                 s390_jcl (code, cond, 0);                                               \
  51         }                                                                               \
  52 }                                                                                       \
  53 }
  54
  55 #define EMIT_UNCOND_BRANCH(ins)                                                         \
  56 {                                                                                       \
  57 if (ins->flags & MONO_INST_BRLABEL) {                                                   \
  58         if (ins->inst_i0->inst_c0) {                                                    \
  59                 int displace;                                                           \
  60                 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2;     \
  61                 if (s390_is_imm16(displace)) {                                          \
  62                         s390_brc (code, S390_CC_UN, displace);                          \
  63                 } else {                                                                \
  64                         s390_jcl (code, S390_CC_UN, displace);                          \
  65                 }                                                                       \
  66         } else {                                                                        \
  67                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  68                                      MONO_PATCH_INFO_LABEL, ins->inst_i0);              \
  69                 s390_jcl (code, S390_CC_UN, 0);                                         \
  70         }                                                                               \
  71 } else {                                                                                \
  72         if (ins->inst_target_bb->native_offset) {                                       \
  73                 int displace;                                                           \
  74                 displace = ((cfg->native_code +                                         \
  75                             ins->inst_target_bb->native_offset) - code) / 2;            \
  76                 if (s390_is_imm16(displace)) {                                          \
  77                         s390_brc (code, S390_CC_UN, displace);                          \
  78                 } else {                                                                \
  79                         s390_jcl (code, S390_CC_UN, displace);                          \
  80                 }                                                                       \
  81         } else {                                                                        \
  82                 mono_add_patch_info (cfg, code - cfg->native_code,                      \
  83                                      MONO_PATCH_INFO_BB, ins->inst_target_bb);          \
  84                 s390_jcl (code, S390_CC_UN, 0);                                         \
  85         }                                                                               \
  86 }                                                                                       \
  87 }
  88
  89 #define EMIT_COND_SYSTEM_EXCEPTION(cond,exc_name)                       \
  90         do {                                                            \
  91                 mono_add_patch_info (cfg, code - cfg->native_code,      \
  92                                     MONO_PATCH_INFO_EXC, exc_name);     \
  93                 s390_jcl (code, cond, 0);                               \
  94         } while (0);
  95
  96 #define CHECK_SRCDST_COM                                                \
  97         if (ins->dreg == ins->sreg2) {                                  \
  98                 src2 = ins->sreg1;                                      \
  99         } else {                                                        \
 100                 src2 = ins->sreg2;                                      \
 101                 if (ins->dreg != ins->sreg1) {                          \
 102                         s390_lgr (code, ins->dreg, ins->sreg1);         \
 103                 }                                                       \
 104         }
 105
 106 #define CHECK_SRCDST_NCOM                                               \
 107         if (ins->dreg == ins->sreg2) {                                  \
 108                 src2 = s390_r13;                                        \
 109                 s390_lgr (code, s390_r13, ins->sreg2);                  \
 110         } else {                                                        \
 111                 src2 = ins->sreg2;                                      \
 112         }                                                               \
 113         if (ins->dreg != ins->sreg1) {                                  \
 114                 s390_lgr (code, ins->dreg, ins->sreg1);                 \
 115         }
 116
 117 #define CHECK_SRCDST_COM_I                                              \
 118         if (ins->dreg == ins->sreg2) {                                  \
 119                 src2 = ins->sreg1;                                      \
 120         } else {                                                        \
 121                 src2 = ins->sreg2;                                      \
 122                 if (ins->dreg != ins->sreg1) {                          \
 123                         s390_lgfr (code, ins->dreg, ins->sreg1);        \
 124                 }                                                       \
 125         }
 126
 127 #define CHECK_SRCDST_NCOM_I                                             \
 128         if (ins->dreg == ins->sreg2) {                                  \
 129                 src2 = s390_r13;                                        \
 130                 s390_lgfr (code, s390_r13, ins->sreg2);                 \
 131         } else {                                                        \
 132                 src2 = ins->sreg2;                                      \
 133         }                                                               \
 134         if (ins->dreg != ins->sreg1) {                                  \
 135                 s390_lgfr (code, ins->dreg, ins->sreg1);                \
 136         }
 137
 138 #define CHECK_SRCDST_COM_F                                              \
 139         if (ins->dreg == ins->sreg2) {                                  \
 140                 src2 = ins->sreg1;                                      \
 141         } else {                                                        \
 142                 src2 = ins->sreg2;                                      \
 143                 if (ins->dreg != ins->sreg1) {                          \
 144                         s390_ldr (code, ins->dreg, ins->sreg1);         \
 145                 }                                                       \
 146         }
 147
 148 #define CHECK_SRCDST_NCOM_F                                             \
 149         if (ins->dreg == ins->sreg2) {                                  \
 150                 src2 = s390_f15;                                        \
 151                 s390_ldr (code, s390_r13, ins->sreg2);                  \
 152         } else {                                                        \
 153                 src2 = ins->sreg2;                                      \
 154         }                                                               \
 155         if (ins->dreg != ins->sreg1) {                                  \
 156                 s390_ldr (code, ins->dreg, ins->sreg1);                 \
 157         }
 158
 159 #define MONO_EMIT_NEW_MOVE(cfg,dest,offset,src,imm,size) do {                   \
 160                 MonoInst *inst;                                                 \
 161                 int tmpr = 0;                                                   \
 162                 int sReg, dReg;                                                 \
 163                 MONO_INST_NEW (cfg, inst, OP_NOP);                                                              \
 164                 if (size > 256) {                                               \
 165                         tmpr = mono_alloc_preg (cfg); \
 166                         MONO_EMIT_NEW_ICONST(cfg,tmpr,size);                    \
 167                         inst->dreg        = dest;                               \
 168                         inst->inst_offset = offset;                             \
 169                         inst->sreg1       = src;                                \
 170                         inst->inst_imm    = imm;                                \
 171                         inst->sreg2       = tmpr;                               \
 172                 } else {                                                        \
 173                         if (s390_is_uimm12(offset)) {                           \
 174                                 inst->dreg        = dest;                       \
 175                                 inst->inst_offset = offset;                     \
 176                         } else {                                                \
 177                                 dReg = mono_alloc_preg (cfg); \
 178                                 MONO_EMIT_NEW_BIALU_IMM(cfg, OP_ADD_IMM,        \
 179                                         dReg, dest, offset);                    \
 180                                 inst->dreg        = dReg;                       \
 181                                 inst->inst_offset = 0;                          \
 182                         }                                                       \
 183                         if (s390_is_uimm12(imm)) {                              \
 184                                 inst->sreg1       = src;                        \
 185                                 inst->inst_imm    = imm;                        \
 186                         } else {                                                \
 187                                 sReg = mono_alloc_preg (cfg); \
 188                                 MONO_EMIT_NEW_BIALU_IMM(cfg, OP_ADD_IMM,        \
 189                                         sReg, src, imm);                        \
 190                                 inst->sreg1       = sReg;                       \
 191                                 inst->inst_imm    = 0;                          \
 192                         }                                                       \
 193                 }                                                               \
 194                 inst->opcode      = OP_S390_MOVE;                               \
 195                 inst->backend.size        = size;                                       \
 196         MONO_ADD_INS (cfg->cbb, inst); \
 197         } while (0)
 198
 199 #define MONO_OUTPUT_VTR(cfg, size, dr, sr, so) do {                             \
 200         int reg = mono_alloc_preg (cfg); \
 201         switch (size) {                                                         \
 202                 case 0:                                                         \
 203                         MONO_EMIT_NEW_ICONST(cfg, reg, 0);                      \
 204                 break;                                                          \
 205                 case 1:                                                         \
 206                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
 207                                 reg, sr, so);                                   \
 208                 break;                                                          \
 209                 case 2:                                                         \
 210                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
 211                                 reg, sr, so);                                   \
 212                 break;                                                          \
 213                 case 4:                                                         \
 214                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADI4_MEMBASE,   \
 215                                 reg, sr, so);                                   \
 216                 break;                                                          \
 217                 case 8:                                                         \
 218                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADI8_MEMBASE,   \
 219                                 reg, sr, so);                                   \
 220                 break;                                                          \
 221         }                                                                       \
 222         mono_call_inst_add_outarg_reg(cfg, call, reg, dr, FALSE);       \
 223 } while (0)
 224
 225 #define MONO_OUTPUT_VTS(cfg, size, dr, dx, sr, so) do {                         \
 226         int tmpr;                                                               \
 227         switch (size) {                                                         \
 228                 case 0:                                                         \
 229                         tmpr = mono_alloc_preg (cfg); \
 230                         MONO_EMIT_NEW_ICONST(cfg, tmpr, 0);                     \
 231                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 232                                 dr, dx, tmpr);                                  \
 233                 break;                                                          \
 234                 case 1:                                                         \
 235                         tmpr = mono_alloc_preg (cfg); \
 236                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
 237                                 tmpr, sr, so);                                  \
 238                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 239                                 dr, dx, tmpr);                                  \
 240                 break;                                                          \
 241                 case 2:                                                         \
 242                         tmpr = mono_alloc_preg (cfg); \
 243                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
 244                                 tmpr, sr, so);                                  \
 245                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 246                                 dr, dx, tmpr);                                  \
 247                 break;                                                          \
 248                 case 4:                                                         \
 249                         tmpr = mono_alloc_preg (cfg);   \
 250                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADI4_MEMBASE,   \
 251                                 tmpr, sr, so);                                  \
 252                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 253                                 dr, dx, tmpr);                                  \
 254                 break;                                                          \
 255                 case 8:                                                         \
 256                         MONO_EMIT_NEW_MOVE (cfg, dr, dx, sr, so, size);         \
 257                 break;                                                          \
 258         }                                                                       \
 259 } while (0)
 260
 261 #undef DEBUG
 262 #define DEBUG(a) if (cfg->verbose_level > 1) a
 263
 264 #define MAX_EXC 16
 265
 266 #define S390_TRACE_STACK_SIZE (5*sizeof(gpointer)+4*sizeof(gdouble))
 267
 268 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 269
 270 /*========================= End of Defines =========================*/
 271
 272 /*------------------------------------------------------------------*/
 273 /*                 I n c l u d e s                                  */
 274 /*------------------------------------------------------------------*/
 275
 276 #include "mini.h"
 277 #include <string.h>
 278
 279 #include <mono/metadata/appdomain.h>
 280 #include <mono/metadata/debug-helpers.h>
 281 #include <mono/metadata/profiler-private.h>
 282 #include <mono/utils/mono-math.h>
 283
 284 #include "mini-s390x.h"
 285 #include "cpu-s390x.h"
 286 #include "jit-icalls.h"
 287 #include "ir-emit.h"
 288
 289 /*========================= End of Includes ========================*/
 290
 291 /*------------------------------------------------------------------*/
 292 /*                 T y p e d e f s                                  */
 293 /*------------------------------------------------------------------*/
 294
 295 typedef struct {
 296         guint stack_size,
 297               local_size,
 298               code_size,
 299               parm_size,
 300               offset,
 301               offStruct,
 302               retStruct;
 303 } size_data;
 304
 305 /*------------------------------------------------------------------*/
 306 /* Used by the instrument_emit_epilog                               */
 307 /*------------------------------------------------------------------*/
 308
 309 enum {
 310         SAVE_NONE,
 311         SAVE_STRUCT,
 312         SAVE_ONE,
 313         SAVE_TWO,
 314         SAVE_R4,
 315         SAVE_R8
 316 };
 317
 318 typedef struct InstList InstList;
 319
 320 struct InstList {
 321         InstList *prev;
 322         InstList *next;
 323         MonoInst *data;
 324 };
 325
 326 typedef enum {
 327         RegTypeGeneral,
 328         RegTypeBase,
 329         RegTypeFP,
 330         RegTypeFPR4,
 331         RegTypeStructByVal,
 332         RegTypeStructByValInFP,
 333         RegTypeStructByAddr,
 334         RegTypeStructByAddrOnStack
 335 } ArgStorage;
 336
 337 typedef struct {
 338         gint32  offset;         /* offset from caller's stack */
 339         gint32  offparm;        /* offset from callee's stack */
 340         guint16 vtsize;         /* in param area */
 341         guint8  reg;
 342         ArgStorage regtype;
 343         guint32 size;           /* Size of structure used by RegTypeStructByVal */
 344         gint32  type;           /* Data type of argument */
 345 } ArgInfo;
 346
 347 typedef struct {
 348         int nargs;
 349         int lastgr;
 350         guint32 stack_usage;
 351         guint32 struct_ret;
 352         ArgInfo ret;
 353         ArgInfo sigCookie;
 354         size_data sz;
 355         ArgInfo args [1];
 356 } CallInfo;
 357
 358 typedef struct {
 359         gint64  gr[5];          /* R2-R6                            */
 360         gdouble fp[3];          /* F0-F2                            */
 361 } __attribute__ ((packed)) RegParm;
 362
 363 /*========================= End of Typedefs ========================*/
 364
 365 /*------------------------------------------------------------------*/
 366 /*                   P r o t o t y p e s                            */
 367 /*------------------------------------------------------------------*/
 368
 369 static void indent (int);
 370 static guint8 * backUpStackPtr(MonoCompile *, guint8 *);
 371 static void decodeParm (MonoType *, void *, int);
 372 static void enter_method (MonoMethod *, RegParm *, char *);
 373 static void leave_method (MonoMethod *, ...);
 374 static gboolean is_regsize_var (MonoType *);
 375 static inline void add_general (guint *, size_data *, ArgInfo *);
 376 static inline void add_stackParm (guint *, size_data *, ArgInfo *, gint);
 377 static inline void add_float (guint *, size_data *, ArgInfo *);
 378 static CallInfo * get_call_info (MonoCompile *, MonoMemPool *, MonoMethodSignature *, gboolean);
 379 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
 380 gpointer mono_arch_get_lmf_addr (void);
 381 static guint8 * emit_load_volatile_arguments (guint8 *, MonoCompile *);
 382 static void catch_SIGILL(int, siginfo_t *, void *);
 383
 384 /*========================= End of Prototypes ======================*/
 385
 386 /*------------------------------------------------------------------*/
 387 /*                 G l o b a l   V a r i a b l e s                  */
 388 /*------------------------------------------------------------------*/
 389
 390 int mono_exc_esp_offset = 0;
 391
 392 static int indent_level = 0;
 393
 394 int has_ld = 0;
 395
 396 static gboolean tls_offset_inited = FALSE;
 397
 398 static int appdomain_tls_offset = -1,
 399            thread_tls_offset = -1;
 400
 401 pthread_key_t lmf_addr_key;
 402
 403 gboolean lmf_addr_key_inited = FALSE;
 404
 405 #if 0
 406
 407 extern __thread MonoDomain *tls_appdomain;
 408 extern __thread MonoThread *tls_current_object;
 409 extern __thread gpointer   mono_lmf_addr;
 410
 411 #endif
 412
 413 /*====================== End of Global Variables ===================*/
 414
 415 /*------------------------------------------------------------------*/
 416 /*                                                                  */
 417 /* Name         - mono_arch_regname                                 */
 418 /*                                                                  */
 419 /* Function     - Returns the name of the register specified by     */
 420 /*                the input parameter.                              */
 421 /*                                                                  */
 422 /*------------------------------------------------------------------*/
 423
 424 const char*
 425 mono_arch_regname (int reg) {
 426         static const char * rnames[] = {
 427                 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
 428                 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
 429                 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
 430                 "s390_r15"
 431         };
 432
 433         if (reg >= 0 && reg < 16)
 434                 return rnames [reg];
 435         else
 436                 return "unknown";
 437 }
 438
 439 /*========================= End of Function ========================*/
 440
 441 /*------------------------------------------------------------------*/
 442 /*                                                                  */
 443 /* Name         - mono_arch_fregname                                */
 444 /*                                                                  */
 445 /* Function     - Returns the name of the register specified by     */
 446 /*                the input parameter.                              */
 447 /*                                                                  */
 448 /*------------------------------------------------------------------*/
 449
 450 const char*
 451 mono_arch_fregname (int reg) {
 452         static const char * rnames[] = {
 453                 "s390_f0", "s390_f1", "s390_f2", "s390_f3", "s390_f4",
 454                 "s390_f5", "s390_f6", "s390_f7", "s390_f8", "s390_f9",
 455                 "s390_f10", "s390_f11", "s390_f12", "s390_f13", "s390_f14",
 456                 "s390_f15"
 457         };
 458
 459         if (reg >= 0 && reg < 16)
 460                 return rnames [reg];
 461         else
 462                 return "unknown";
 463 }
 464
 465 /*========================= End of Function ========================*/
 466
 467 /*------------------------------------------------------------------*/
 468 /*                                                                  */
 469 /* Name         - arch_get_argument_info                            */
 470 /*                                                                  */
 471 /* Function     - Gathers information on parameters such as size,   */
 472 /*                alignment, and padding. arg_info should be large  */
 473 /*                enough to hold param_count + 1 entries.           */
 474 /*                                                                  */
 475 /* Parameters   - @csig - Method signature                          */
 476 /*                @param_count - No. of parameters to consider      */
 477 /*                @arg_info - An array to store the result info     */
 478 /*                                                                  */
 479 /* Returns      - Size of the activation frame                      */
 480 /*                                                                  */
 481 /*------------------------------------------------------------------*/
 482
 483 int
 484 mono_arch_get_argument_info (MonoMethodSignature *csig,
 485                              int param_count,
 486                              MonoJitArgumentInfo *arg_info)
 487 {
 488         int k, frame_size = 0;
 489         int size, align, pad;
 490         int offset = 8;
 491
 492         if (MONO_TYPE_ISSTRUCT (csig->ret)) {
 493                 frame_size += sizeof (gpointer);
 494                 offset += 8;
 495         }
 496
 497         arg_info [0].offset = offset;
 498
 499         if (csig->hasthis) {
 500                 frame_size += sizeof (gpointer);
 501                 offset += 8;
 502         }
 503
 504         arg_info [0].size = frame_size;
 505
 506         for (k = 0; k < param_count; k++) {
 507
 508                 if (csig->pinvoke)
 509                         size = mono_type_native_stack_size (csig->params [k], &align);
 510                 else
 511                         size = mini_type_stack_size (NULL, csig->params [k], &align);
 512
 513                 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
 514                 arg_info [k].pad = pad;
 515                 frame_size += size;
 516                 arg_info [k + 1].pad = 0;
 517                 arg_info [k + 1].size = size;
 518                 offset += pad;
 519                 arg_info [k + 1].offset = offset;
 520                 offset += size;
 521         }
 522
 523         align = MONO_ARCH_FRAME_ALIGNMENT;
 524         frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
 525         arg_info [k].pad = pad;
 526
 527         return frame_size;
 528 }
 529
 530 /*========================= End of Function ========================*/
 531
 532 /*------------------------------------------------------------------*/
 533 /*                                                                  */
 534 /* Name         - retFitsInReg.                                     */
 535 /*                                                                  */
 536 /* Function     - Determines if a value can be returned in one or   */
 537 /*                two registers.                                    */
 538 /*                                                                  */
 539 /*------------------------------------------------------------------*/
 540
 541 static inline gboolean
 542 retFitsInReg(guint32 size)
 543 {
 544         switch (size) {
 545                 case 0:
 546                 case 1:
 547                 case 2:
 548                 case 4:
 549                 case 8:
 550                         return (TRUE);
 551                 break;
 552                 default:
 553                         return (FALSE);
 554         }
 555 }
 556
 557 /*========================= End of Function ========================*/
 558
 559 /*------------------------------------------------------------------*/
 560 /*                                                                  */
 561 /* Name         - backStackPtr.                                     */
 562 /*                                                                  */
 563 /* Function     - Restore Stack Pointer to previous frame.          */
 564 /*                                                                  */
 565 /*------------------------------------------------------------------*/
 566
 567 static inline guint8 *
 568 backUpStackPtr(MonoCompile *cfg, guint8 *code)
 569 {
 570         int stackSize = cfg->stack_usage;
 571
 572         if (s390_is_imm16 (stackSize)) {
 573                 s390_aghi  (code, STK_BASE, stackSize);
 574         } else {
 575                 while (stackSize > 32767) {
 576                         s390_aghi  (code, STK_BASE, 32767);
 577                         stackSize -= 32767;
 578                 }
 579                 s390_aghi  (code, STK_BASE, stackSize);
 580         }
 581         return (code);
 582 }
 583
 584 /*========================= End of Function ========================*/
 585
 586 /*------------------------------------------------------------------*/
 587 /*                                                                  */
 588 /* Name         - indent                                            */
 589 /*                                                                  */
 590 /* Function     - Perform nice indenting to current level           */
 591 /*                                                                  */
 592 /*------------------------------------------------------------------*/
 593
 594 static void
 595 indent (int diff) {
 596         int v;
 597         if (diff < 0)
 598                 indent_level += diff;
 599         v = indent_level;
 600         printf("[%3d] ",v);
 601         while (v-- > 0) {
 602                 printf (". ");
 603         }
 604         if (diff > 0)
 605                 indent_level += diff;
 606 }
 607
 608 /*========================= End of Function ========================*/
 609
 610 /*------------------------------------------------------------------*/
 611 /*                                                                  */
 612 /* Name         - decodeParm                                        */
 613 /*                                                                  */
 614 /* Function     - Decode a parameter for the trace.                 */
 615 /*                                                                  */
 616 /*------------------------------------------------------------------*/
 617
 618 static void
 619 decodeParm(MonoType *type, void *curParm, int size)
 620 {
 621         guint32 simpleType;
 622
 623         if (type->byref) {
 624                 printf("[BYREF:%p], ", *((char **) curParm));
 625         } else {
 626                 simpleType = mono_type_get_underlying_type(type)->type;
 627 enum_parmtype:
 628                 switch (simpleType) {
 629                         case MONO_TYPE_I :
 630                                 printf ("[INTPTR:%p], ", *((int **) curParm));
 631                                 break;
 632                         case MONO_TYPE_U :
 633                                 printf ("[UINTPTR:%p], ", *((int **) curParm));
 634                                 break;
 635                         case MONO_TYPE_BOOLEAN :
 636                                 printf ("[BOOL:%ld], ", *((gint64 *) curParm));
 637                                 break;
 638                         case MONO_TYPE_CHAR :
 639                                 printf ("[CHAR:%c], ", *((int  *) curParm));
 640                                 break;
 641                         case MONO_TYPE_I1 :
 642                                 printf ("[INT1:%ld], ", *((gint64 *) curParm));
 643                                 break;
 644                         case MONO_TYPE_I2 :
 645                                 printf ("[INT2:%ld], ", *((gint64 *) curParm));
 646                                 break;
 647                         case MONO_TYPE_I4 :
 648                                 printf ("[INT4:%ld], ", *((gint64 *) curParm));
 649                                 break;
 650                         case MONO_TYPE_U1 :
 651                                 printf ("[UINT1:%lu], ", *((guint64 *) curParm));
 652                                 break;
 653                         case MONO_TYPE_U2 :
 654                                 printf ("[UINT2:%lu], ", *((guint64 *) curParm));
 655                                 break;
 656                         case MONO_TYPE_U4 :
 657                                 printf ("[UINT4:%lu], ", *((guint64 *) curParm));
 658                                 break;
 659                         case MONO_TYPE_U8 :
 660                                 printf ("[UINT8:%lu], ", *((guint64 *) curParm));
 661                                 break;
 662                         case MONO_TYPE_STRING : {
 663                                 MonoString *s = *((MonoString **) curParm);
 664                                 if (s) {
 665                                         g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
 666                                         printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
 667                                 } else {
 668                                         printf("[STRING:null], ");
 669                                 }
 670                                 break;
 671                         }
 672                         case MONO_TYPE_CLASS :
 673                         case MONO_TYPE_OBJECT : {
 674                                 MonoObject *obj = *((MonoObject **) curParm);
 675                                 MonoClass *class;
 676                                 if ((obj) && (obj->vtable)) {
 677                                         printf("[CLASS/OBJ:");
 678                                         class = obj->vtable->klass;
 679                                         printf("%p [%p] ",obj,curParm);
 680                                         if (class == mono_defaults.string_class) {
 681                                                 printf("[STRING:%p:%s]",
 682                                                        obj, mono_string_to_utf8 ((MonoString *) obj));
 683                                         } else if (class == mono_defaults.int32_class) {
 684                                                 printf("[INT32:%p:%d]",
 685                                                         obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
 686                                         } else
 687                                                 printf("[%s.%s:%p]",
 688                                                        class->name_space, class->name, obj);
 689                                         printf("], ");
 690                                 } else {
 691                                         printf("[OBJECT:null], ");
 692                                 }
 693                                 break;
 694                         }
 695                         case MONO_TYPE_PTR :
 696                                 printf("[PTR:%p], ", *((gpointer **) (curParm)));
 697                                 break;
 698                         case MONO_TYPE_FNPTR :
 699                                 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
 700                                 break;
 701                         case MONO_TYPE_ARRAY :
 702                                 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
 703                                 break;
 704                         case MONO_TYPE_SZARRAY :
 705                                 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
 706                                 break;
 707                         case MONO_TYPE_I8 :
 708                                 printf("[INT8:%ld], ", *((gint64 *) (curParm)));
 709                                 break;
 710                         case MONO_TYPE_R4 :
 711                                 printf("[FLOAT4:%g], ", *((float *) (curParm)));
 712                                 break;
 713                         case MONO_TYPE_R8 :
 714                                 printf("[FLOAT8:%g], ", *((double *) (curParm)));
 715                                 break;
 716                         case MONO_TYPE_VALUETYPE : {
 717                                 int i;
 718                                 MonoMarshalType *info;
 719
 720                                 if (type->data.klass->enumtype) {
 721                                         simpleType = mono_class_enum_basetype (type->data.klass)->type;
 722                                         printf("{VALUETYPE} - ");
 723                                         goto enum_parmtype;
 724                                 }
 725
 726                                 info = mono_marshal_load_type_info (type->data.klass);
 727
 728                                 if ((info->native_size == sizeof(float)) &&
 729                                     (info->num_fields  == 1) &&
 730                                     (info->fields[0].field->type->type == MONO_TYPE_R4)) {
 731                                                 printf("[FLOAT4:%f], ", *((float *) (curParm)));
 732                                         break;
 733                                 }
 734
 735                                 if ((info->native_size == sizeof(double)) &&
 736                                     (info->num_fields  == 1) &&
 737                                     (info->fields[0].field->type->type == MONO_TYPE_R8)) {
 738                                         printf("[FLOAT8:%g], ", *((double *) (curParm)));
 739                                         break;
 740                                 }
 741
 742                                 printf("[VALUETYPE:");
 743                                 for (i = 0; i < size; i++)
 744                                         printf("%02x,", *((guint8 *)curParm+i));
 745                                 printf("]");
 746                                 break;
 747                         }
 748                         case MONO_TYPE_TYPEDBYREF: {
 749                                 int i;
 750                                 printf("[TYPEDBYREF:");
 751                                 for (i = 0; i < size; i++)
 752                                         printf("%02x,", *((guint8 *)curParm+i));
 753                                 printf("]");
 754                                 break;
 755                         }
 756                         default :
 757                                 printf("[?? - %d], ",simpleType);
 758                 }
 759         }
 760 }
 761
 762 /*========================= End of Function ========================*/
 763
 764 /*------------------------------------------------------------------*/
 765 /*                                                                  */
 766 /* Name         - enter_method                                      */
 767 /*                                                                  */
 768 /* Function     - Perform tracing of the entry to the current       */
 769 /*                method.                                           */
 770 /*                                                                  */
 771 /*------------------------------------------------------------------*/
 772
 773 static void
 774 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
 775 {
 776         int i, oParm = 0, iParm = 0;
 777         MonoClass *class;
 778         MonoObject *obj;
 779         MonoMethodSignature *sig;
 780         char *fname;
 781         guint64 ip;
 782         CallInfo *cinfo;
 783         ArgInfo *ainfo;
 784         void *curParm;
 785
 786         fname = mono_method_full_name (method, TRUE);
 787         indent (1);
 788         printf ("ENTER: %s ", fname);
 789         g_free (fname);
 790
 791         ip  = (*(guint64 *) (sp+S390_RET_ADDR_OFFSET));
 792         printf ("ip: %p sp: %p - ", (gpointer) ip, sp);
 793
 794         if (rParm == NULL)
 795                 return;
 796
 797         sig = mono_method_signature (method);
 798
 799         cinfo = get_call_info (NULL, NULL, sig, sig->pinvoke);
 800
 801         if (cinfo->struct_ret) {
 802                 printf ("[STRUCTRET:%p], ", (gpointer) rParm->gr[0]);
 803                 iParm = 1;
 804         }
 805
 806         if (sig->hasthis) {
 807                 gpointer *this = (gpointer *) rParm->gr[iParm];
 808                 obj = (MonoObject *) this;
 809                 if (method->klass->valuetype) {
 810                         if (obj) {
 811                                 printf("this:[value:%p:%016lx], ",
 812                                        this, *((guint64 *)(this+sizeof(MonoObject))));
 813                         } else
 814                                 printf ("this:[NULL], ");
 815                 } else {
 816                         if (obj) {
 817                                 class = obj->vtable->klass;
 818                                 if (class == mono_defaults.string_class) {
 819                                         printf ("this:[STRING:%p:%s], ",
 820                                                 obj, mono_string_to_utf8 ((MonoString *)obj));
 821                                 } else {
 822                                         printf ("this:%p[%s.%s], ",
 823                                                 obj, class->name_space, class->name);
 824                                 }
 825                         } else
 826                                 printf ("this:NULL, ");
 827                 }
 828                 oParm++;
 829         }
 830
 831         for (i = 0; i < sig->param_count; ++i) {
 832                 ainfo = &cinfo->args[i + oParm];
 833                 switch (ainfo->regtype) {
 834                         case RegTypeGeneral :
 835                                 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
 836                                 break;
 837                         case RegTypeFP :
 838                                 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
 839                                 break;
 840                         case RegTypeBase :
 841                                 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
 842                                 break;
 843                         case RegTypeStructByVal :
 844                                 if (ainfo->reg != STK_BASE) {
 845                                         int offset = sizeof(glong) - ainfo->size;
 846                                         curParm = &(rParm->gr[ainfo->reg-2])+offset;
 847                                 }
 848                                 else
 849                                         curParm = sp+ainfo->offset;
 850
 851                                 if (retFitsInReg (ainfo->vtsize))
 852                                         decodeParm(sig->params[i],
 853                                                    curParm,
 854                                                    ainfo->size);
 855                                 else
 856                                         decodeParm(sig->params[i],
 857                                                    *((char **) curParm),
 858                                                    ainfo->vtsize);
 859                                 break;
 860                         case RegTypeStructByAddr :
 861                                 if (ainfo->reg != STK_BASE)
 862                                         curParm = &(rParm->gr[ainfo->reg-2]);
 863                                 else
 864                                         curParm = sp+ainfo->offset;
 865
 866                                 decodeParm(sig->params[i],
 867                                            *((char **) curParm),
 868                                            ainfo->vtsize);
 869                                 break;
 870
 871                         default :
 872                                 printf("???, ");
 873                 }
 874         }
 875         printf("\n");
 876         g_free(cinfo);
 877 }
 878
 879 /*========================= End of Function ========================*/
 880
 881 /*------------------------------------------------------------------*/
 882 /*                                                                  */
 883 /* Name         - leave_method                                      */
 884 /*                                                                  */
 885 /* Function     -                                                   */
 886 /*                                                                  */
 887 /*------------------------------------------------------------------*/
 888
 889 static void
 890 leave_method (MonoMethod *method, ...)
 891 {
 892         MonoType *type;
 893         char *fname;
 894         guint64 ip;
 895         va_list ap;
 896
 897         va_start(ap, method);
 898
 899         fname = mono_method_full_name (method, TRUE);
 900         indent (-1);
 901         printf ("LEAVE: %s", fname);
 902         g_free (fname);
 903
 904         type = mono_method_signature (method)->ret;
 905
 906 handle_enum:
 907         switch (type->type) {
 908         case MONO_TYPE_VOID:
 909                 break;
 910         case MONO_TYPE_BOOLEAN: {
 911                 int val = va_arg (ap, int);
 912                 if (val)
 913                         printf ("[TRUE:%d]", val);
 914                 else
 915                         printf ("[FALSE]");
 916
 917                 break;
 918         }
 919         case MONO_TYPE_CHAR: {
 920                 int val = va_arg (ap, int);
 921                 printf ("[CHAR:%d]", val);
 922                 break;
 923         }
 924         case MONO_TYPE_I1: {
 925                 int val = va_arg (ap, int);
 926                 printf ("[INT1:%d]", val);
 927                 break;
 928         }
 929         case MONO_TYPE_U1: {
 930                 int val = va_arg (ap, int);
 931                 printf ("[UINT1:%d]", val);
 932                 break;
 933         }
 934         case MONO_TYPE_I2: {
 935                 int val = va_arg (ap, int);
 936                 printf ("[INT2:%d]", val);
 937                 break;
 938         }
 939         case MONO_TYPE_U2: {
 940                 int val = va_arg (ap, int);
 941                 printf ("[UINT2:%d]", val);
 942                 break;
 943         }
 944         case MONO_TYPE_I4: {
 945                 int val = va_arg (ap, int);
 946                 printf ("[INT4:%d]", val);
 947                 break;
 948         }
 949         case MONO_TYPE_U4: {
 950                 int val = va_arg (ap, int);
 951                 printf ("[UINT4:%d]", val);
 952                 break;
 953         }
 954         case MONO_TYPE_I: {
 955                 gint64 val = va_arg (ap, gint64);
 956                 printf ("[INT:%ld]", val);
 957                 printf("]");
 958                 break;
 959         }
 960         case MONO_TYPE_U: {
 961                 gint64 val = va_arg (ap, gint64);
 962                 printf ("[UINT:%lu]", val);
 963                 printf("]");
 964                 break;
 965         }
 966         case MONO_TYPE_STRING: {
 967                 MonoString *s = va_arg (ap, MonoString *);
 968 ;
 969                 if (s) {
 970                         g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
 971                         printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
 972                 } else
 973                         printf ("[STRING:null], ");
 974                 break;
 975         }
 976         case MONO_TYPE_CLASS:
 977         case MONO_TYPE_OBJECT: {
 978                 MonoObject *o = va_arg (ap, MonoObject *);
 979
 980                 if ((o) && (o->vtable)) {
 981                         if (o->vtable->klass == mono_defaults.boolean_class) {
 982                                 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
 983                         } else if  (o->vtable->klass == mono_defaults.int32_class) {
 984                                 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
 985                         } else if  (o->vtable->klass == mono_defaults.int64_class) {
 986                                 printf ("[INT64:%p:%ld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
 987                         } else
 988                                 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
 989                 } else
 990                         printf ("[OBJECT:%p]", o);
 991
 992                 break;
 993         }
 994         case MONO_TYPE_PTR:
 995         case MONO_TYPE_FNPTR:
 996         case MONO_TYPE_ARRAY:
 997         case MONO_TYPE_SZARRAY: {
 998                 gpointer p = va_arg (ap, gpointer);
 999                 printf ("[result=%p]", p);
1000                 break;
1001         }
1002         case MONO_TYPE_I8: {
1003                 gint64 l =  va_arg (ap, gint64);
1004                 printf ("[LONG:%ld]", l);
1005                 break;
1006         }
1007         case MONO_TYPE_U8: {
1008                 guint64 l =  va_arg (ap, guint64);
1009                 printf ("[ULONG:%lu]", l);
1010                 break;
1011         }
1012         case MONO_TYPE_R4: {
1013                 double f = va_arg (ap, double);
1014                 printf ("[FLOAT4:%g]\n", f);
1015                 break;
1016         }
1017         case MONO_TYPE_R8: {
1018                 double f = va_arg (ap, double);
1019                 printf ("[FLOAT8:%g]\n", f);
1020                 break;
1021         }
1022         case MONO_TYPE_VALUETYPE: {
1023                 MonoMarshalType *info;
1024                 if (type->data.klass->enumtype) {
1025                         type = mono_class_enum_basetype (type->data.klass);
1026                         goto handle_enum;
1027                 } else {
1028                         guint8 *p = va_arg (ap, gpointer);
1029                         int j, size, align;
1030
1031                         info = mono_marshal_load_type_info (type->data.klass);
1032
1033                         if ((info->native_size == sizeof(float)) &&
1034                             (info->num_fields  == 1) &&
1035                             (info->fields[0].field->type->type == MONO_TYPE_R4)) {
1036                                 double f = va_arg (ap, double);
1037                                 printf("[FLOAT4:%g]\n", (double) f);
1038                                 break;
1039                         }
1040
1041                         if ((info->native_size == sizeof(double)) &&
1042                             (info->num_fields  == 1) &&
1043                             (info->fields[0].field->type->type == MONO_TYPE_R8)) {
1044                                 double f = va_arg (ap, double);
1045                                 printf("[FLOAT8:%g]\n", f);
1046                                 break;
1047                         }
1048
1049                         size = mono_type_size (type, &align);
1050                         switch (size) {
1051                         case 1:
1052                         case 2:
1053                         case 4:
1054                         case 8:
1055                                 printf ("[");
1056                                 for (j = 0; p && j < size; j++)
1057                                         printf ("%02x,", p [j]);
1058                                 printf ("]\n");
1059                                 break;
1060                         default:
1061                                 printf ("[VALUETYPE]\n");
1062                         }
1063                 }
1064                 break;
1065         }
1066         case MONO_TYPE_TYPEDBYREF: {
1067                 guint8 *p = va_arg (ap, gpointer);
1068                 int j, size, align;
1069                 size = mono_type_size (type, &align);
1070                 switch (size) {
1071                 case 1:
1072                 case 2:
1073                 case 4:
1074                 case 8:
1075                         printf ("[");
1076                         for (j = 0; p && j < size; j++)
1077                                 printf ("%02x,", p [j]);
1078                         printf ("]\n");
1079                         break;
1080                 default:
1081                         printf ("[TYPEDBYREF]\n");
1082                 }
1083         }
1084                 break;
1085         default:
1086                 printf ("(unknown return type %x)",
1087                         mono_method_signature (method)->ret->type);
1088         }
1089
1090         ip = ((gint64) __builtin_return_address (0));
1091         printf (" ip: %p\n", (gpointer) ip);
1092 }
1093
1094 /*========================= End of Function ========================*/
1095
1096 /*------------------------------------------------------------------*/
1097 /*                                                                  */
1098 /* Name         - catch_SIGILL                                      */
1099 /*                                                                  */
1100 /* Function     - Catch SIGILL as a result of testing for long      */
1101 /*                displacement facility.                            */
1102 /*                                                                  */
1103 /*------------------------------------------------------------------*/
1104
1105 void
1106 catch_SIGILL(int sigNo, siginfo_t *info, void *act) {
1107
1108         has_ld = 0;
1109
1110 }
1111
1112 /*========================= End of Function ========================*/
1113
1114 /*------------------------------------------------------------------*/
1115 /*                                                                  */
1116 /* Name         - mono_arch_cpu_init                                */
1117 /*                                                                  */
1118 /* Function     - Perform CPU specific initialization to execute    */
1119 /*                managed code.                                     */
1120 /*                                                                  */
1121 /*------------------------------------------------------------------*/
1122
1123 void
1124 mono_arch_cpu_init (void)
1125 {
1126         struct sigaction sa,
1127                          *oldSa = NULL;
1128         guint mode = 1;
1129
1130         /*--------------------------------------*/
1131         /* Set default rounding mode for FP     */
1132         /*--------------------------------------*/
1133         __asm__ ("SRNM\t%0\n\t"
1134                 : : "m" (mode));
1135
1136         /*--------------------------------------*/
1137         /* Determine if we have long displace-  */
1138         /* ment facility on this processor      */
1139         /*--------------------------------------*/
1140         sa.sa_sigaction = catch_SIGILL;
1141         sigemptyset (&sa.sa_mask);
1142         sa.sa_flags = SA_SIGINFO;
1143
1144         sigaction (SIGILL, &sa, oldSa);
1145
1146         /*--------------------------------------*/
1147         /* We test by executing the STY inst    */
1148         /*--------------------------------------*/
1149         __asm__ ("LGHI\t0,1\n\t"
1150                  "LA\t1,%0\n\t"
1151                  ".byte\t0xe3,0x00,0x10,0x00,0x00,0x50\n\t"
1152                 : "=m" (has_ld) : : "0", "1");
1153
1154         sigaction (SIGILL, oldSa, NULL);
1155 }
1156
1157 /*========================= End of Function ========================*/
1158
1159
1160 /*
1161  * Initialize architecture specific code.
1162  */
1163 void
1164 mono_arch_init (void)
1165 {
1166 }
1167
1168 /*
1169  * Cleanup architecture specific code.
1170  */
1171 void
1172 mono_arch_cleanup (void)
1173 {
1174 }
1175
1176 /*------------------------------------------------------------------*/
1177 /*                                                                  */
1178 /* Name         - mono_arch_cpu_optimizazions                       */
1179 /*                                                                  */
1180 /* Function     - Returns the optimizations supported on this CPU   */
1181 /*                                                                  */
1182 /*------------------------------------------------------------------*/
1183
1184 guint32
1185 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
1186 {
1187         guint32 opts = 0;
1188
1189         /*----------------------------------------------------------*/
1190         /* No s390-specific optimizations yet                       */
1191         /*----------------------------------------------------------*/
1192         *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
1193 //      *exclude_mask = MONO_OPT_INLINE;
1194         return opts;
1195 }
1196
1197 /*========================= End of Function ========================*/
1198
1199 /*------------------------------------------------------------------*/
1200 /*                                                                  */
1201 /* Name         -                                                   */
1202 /*                                                                  */
1203 /* Function     -                                                   */
1204 /*                                                                  */
1205 /*------------------------------------------------------------------*/
1206
1207 static gboolean
1208 is_regsize_var (MonoType *t) {
1209         if (t->byref)
1210                 return TRUE;
1211         switch (mono_type_get_underlying_type (t)->type) {
1212         case MONO_TYPE_I4:
1213         case MONO_TYPE_U4:
1214         case MONO_TYPE_I:
1215         case MONO_TYPE_I8:
1216         case MONO_TYPE_U8:
1217         case MONO_TYPE_U:
1218         case MONO_TYPE_PTR:
1219         case MONO_TYPE_FNPTR:
1220                 return TRUE;
1221         case MONO_TYPE_OBJECT:
1222         case MONO_TYPE_STRING:
1223         case MONO_TYPE_CLASS:
1224         case MONO_TYPE_SZARRAY:
1225         case MONO_TYPE_ARRAY:
1226                 return FALSE;
1227         case MONO_TYPE_VALUETYPE:
1228                 if (t->data.klass->enumtype)
1229                         return is_regsize_var (mono_class_enum_basetype (t->data.klass));
1230                 return FALSE;
1231         }
1232         return FALSE;
1233 }
1234
1235 /*========================= End of Function ========================*/
1236
1237 /*------------------------------------------------------------------*/
1238 /*                                                                  */
1239 /* Name         - mono_arch_get_allocatable_int_vars                */
1240 /*                                                                  */
1241 /* Function     -                                                   */
1242 /*                                                                  */
1243 /*------------------------------------------------------------------*/
1244
1245 GList *
1246 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
1247 {
1248         GList *vars = NULL;
1249         int i;
1250
1251         for (i = 0; i < cfg->num_varinfo; i++) {
1252                 MonoInst *ins = cfg->varinfo [i];
1253                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
1254
1255                 /* unused vars */
1256                 if (vmv->range.first_use.abs_pos >= vmv->range.last_use.abs_pos)
1257                         continue;
1258
1259                 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) ||
1260                     (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1261                         continue;
1262
1263                 /* we can only allocate 32 bit values */
1264                 if (is_regsize_var (ins->inst_vtype)) {
1265                         g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1266                         g_assert (i == vmv->idx);
1267                         vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
1268                 }
1269         }
1270
1271         return vars;
1272 }
1273
1274 /*========================= End of Function ========================*/
1275
1276 /*------------------------------------------------------------------*/
1277 /*                                                                  */
1278 /* Name         - mono_arch_global_int_regs                         */
1279 /*                                                                  */
1280 /* Function     - Return a list of usable integer registers.        */
1281 /*                                                                  */
1282 /*------------------------------------------------------------------*/
1283
1284 GList *
1285 mono_arch_get_global_int_regs (MonoCompile *cfg)
1286 {
1287         GList *regs = NULL;
1288         MonoMethodHeader *header;
1289         int i, top = 13;
1290
1291         header = mono_method_get_header (cfg->method);
1292         if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1293                 cfg->frame_reg = s390_r11;
1294
1295
1296         /* FIXME: s390_r12 is reserved for bkchain_reg. Only reserve it if needed */
1297         top = 12;
1298         for (i = 8; i < top; ++i) {
1299                 if (cfg->frame_reg != i)
1300                         regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
1301         }
1302
1303         return regs;
1304 }
1305
1306 /*========================= End of Function ========================*/
1307
1308 /*------------------------------------------------------------------*/
1309 /*                                                                  */
1310 /* Name         -  mono_arch_flush_icache                           */
1311 /*                                                                  */
1312 /* Function     -  Flush the CPU icache.                            */
1313 /*                                                                  */
1314 /*------------------------------------------------------------------*/
1315
1316 void
1317 mono_arch_flush_icache (guint8 *code, gint size)
1318 {
1319 }
1320
1321 /*========================= End of Function ========================*/
1322
1323 /*------------------------------------------------------------------*/
1324 /*                                                                  */
1325 /* Name         - add_general                                       */
1326 /*                                                                  */
1327 /* Function     - Determine code and stack size incremements for a  */
1328 /*                parameter.                                        */
1329 /*                                                                  */
1330 /*------------------------------------------------------------------*/
1331
1332 static void inline
1333 add_general (guint *gr, size_data *sz, ArgInfo *ainfo)
1334 {
1335         if (*gr > S390_LAST_ARG_REG) {
1336                 sz->stack_size  = S390_ALIGN(sz->stack_size, sizeof(long));
1337                 ainfo->offset   = sz->stack_size;
1338                 ainfo->reg      = STK_BASE;
1339                 ainfo->regtype  = RegTypeBase;
1340                 sz->stack_size += sizeof(long);
1341                 sz->local_size += sizeof(long);
1342                 sz->offStruct  += sizeof(long);
1343                 sz->code_size  += 12;
1344         } else {
1345                 ainfo->reg      = *gr;
1346                 sz->code_size  += 8;
1347         }
1348         (*gr) ++;
1349 }
1350
1351 /*========================= End of Function ========================*/
1352
1353 /*------------------------------------------------------------------*/
1354 /*                                                                  */
1355 /* Name         - add_stackParm                                     */
1356 /*                                                                  */
1357 /* Function     - Determine code and stack size incremements for a  */
1358 /*                parameter.                                        */
1359 /*                                                                  */
1360 /*------------------------------------------------------------------*/
1361
1362 static void inline
1363 add_stackParm (guint *gr, size_data *sz, ArgInfo *ainfo, gint size)
1364 {
1365         if (*gr > S390_LAST_ARG_REG) {
1366                 sz->stack_size  = S390_ALIGN(sz->stack_size, sizeof(long));
1367                 ainfo->reg          = STK_BASE;
1368                 ainfo->offset   = sz->stack_size;
1369                 ainfo->regtype  = RegTypeStructByAddrOnStack;
1370                 sz->stack_size += sizeof (gpointer);
1371                 sz->parm_size  += sizeof(gpointer);
1372                 sz->offStruct  += sizeof(gpointer);
1373         } else {
1374                 ainfo->reg      = *gr;
1375                 ainfo->offset   = sz->stack_size;
1376                 ainfo->regtype  = RegTypeStructByAddr;
1377         }
1378         (*gr) ++;
1379         ainfo->offparm  = sz->offset;
1380         sz->offset      = S390_ALIGN(sz->offset+size, sizeof(long));
1381         ainfo->size     = size;
1382         ainfo->vtsize   = size;
1383         sz->parm_size  += size;
1384 }
1385
1386 /*========================= End of Function ========================*/
1387
1388 /*------------------------------------------------------------------*/
1389 /*                                                                  */
1390 /* Name         - add_float                                         */
1391 /*                                                                  */
1392 /* Function     - Determine code and stack size incremements for a  */
1393 /*                float parameter.                                  */
1394 /*                                                                  */
1395 /*------------------------------------------------------------------*/
1396
1397 static void inline
1398 add_float (guint *fr,  size_data *sz, ArgInfo *ainfo)
1399 {
1400         if ((*fr) <= S390_LAST_FPARG_REG) {
1401                 ainfo->regtype = RegTypeFP;
1402                 ainfo->reg     = *fr;
1403                 sz->code_size += 4;
1404                 (*fr) += 2;
1405         }
1406         else {
1407                 ainfo->offset   = sz->stack_size;
1408                 ainfo->reg      = STK_BASE;
1409                 ainfo->regtype  = RegTypeBase;
1410                 sz->code_size  += 4;
1411                 sz->stack_size += sizeof(double);
1412                 sz->local_size += sizeof(double);
1413                 sz->offStruct  += sizeof(double);
1414         }
1415 }
1416
1417 /*========================= End of Function ========================*/
1418
1419 /*------------------------------------------------------------------*/
1420 /*                                                                  */
1421 /* Name         - get_call_info                                   */
1422 /*                                                                  */
1423 /* Function     - Determine the amount of space required for code   */
1424 /*                and stack. In addition determine starting points  */
1425 /*                for stack-based parameters, and area for struct-  */
1426 /*                ures being returned on the stack.                 */
1427 /*                                                                  */
1428 /*------------------------------------------------------------------*/
1429
1430 static CallInfo *
1431 get_call_info (MonoCompile *cfg, MonoMemPool *mp, MonoMethodSignature *sig, gboolean is_pinvoke)
1432 {
1433         guint i, fr, gr, size;
1434         int nParm = sig->hasthis + sig->param_count;
1435         MonoType *ret_type;
1436         guint32 simpletype, align;
1437         CallInfo *cinfo;
1438         size_data *sz;
1439         MonoGenericSharingContext *gsctx = cfg ? cfg->generic_sharing_context : NULL;
1440
1441         if (mp)
1442                 cinfo = mono_mempool_alloc0 (mp, sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1443         else
1444                 cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1445
1446         fr                = 0;
1447         gr                = s390_r2;
1448         nParm             = 0;
1449         cinfo->struct_ret = 0;
1450         sz                = &cinfo->sz;
1451         sz->retStruct     = 0;
1452         sz->offset        = 0;
1453         sz->offStruct     = S390_MINIMAL_STACK_SIZE;
1454         sz->stack_size    = S390_MINIMAL_STACK_SIZE;
1455         sz->code_size     = 0;
1456         sz->parm_size     = 0;
1457         sz->local_size    = 0;
1458
1459         /*----------------------------------------------------------*/
1460         /* We determine the size of the return code/stack in case we*/
1461         /* need to reserve a register to be used to address a stack */
1462         /* area that the callee will use.                           */
1463         /*----------------------------------------------------------*/
1464
1465         ret_type = mono_type_get_underlying_type (sig->ret);
1466         ret_type = mini_get_basic_type_from_generic (gsctx, ret_type);
1467         simpletype = ret_type->type;
1468 enum_retvalue:
1469         switch (simpletype) {
1470                 case MONO_TYPE_BOOLEAN:
1471                 case MONO_TYPE_I1:
1472                 case MONO_TYPE_U1:
1473                 case MONO_TYPE_I2:
1474                 case MONO_TYPE_U2:
1475                 case MONO_TYPE_CHAR:
1476                 case MONO_TYPE_I4:
1477                 case MONO_TYPE_U4:
1478                 case MONO_TYPE_I:
1479                 case MONO_TYPE_U:
1480                 case MONO_TYPE_CLASS:
1481                 case MONO_TYPE_OBJECT:
1482                 case MONO_TYPE_SZARRAY:
1483                 case MONO_TYPE_ARRAY:
1484                 case MONO_TYPE_PTR:
1485                 case MONO_TYPE_FNPTR:
1486                 case MONO_TYPE_STRING:
1487                         cinfo->ret.reg = s390_r2;
1488                         sz->code_size += 4;
1489                         break;
1490                 case MONO_TYPE_R4:
1491                 case MONO_TYPE_R8:
1492                         cinfo->ret.reg = s390_f0;
1493                         sz->code_size += 4;
1494                         break;
1495                 case MONO_TYPE_I8:
1496                 case MONO_TYPE_U8:
1497                         cinfo->ret.reg = s390_r2;
1498                         sz->code_size += 4;
1499                         break;
1500                 case MONO_TYPE_GENERICINST:
1501                         if (!mono_type_generic_inst_is_valuetype (sig->ret)) {
1502                                 cinfo->ret.reg = s390_r2;
1503                                 sz->code_size += 4;
1504                                 break;
1505                         }
1506                         /* Fall through */
1507                 case MONO_TYPE_VALUETYPE: {
1508                         MonoClass *klass = mono_class_from_mono_type (sig->ret);
1509                         if (klass->enumtype) {
1510                                 simpletype = mono_class_enum_basetype (klass)->type;
1511                                 goto enum_retvalue;
1512                         }
1513                         if (sig->pinvoke)
1514                                 size = mono_class_native_size (klass, &align);
1515                         else
1516                                 size = mono_class_value_size (klass, &align);
1517
1518                         cinfo->ret.reg    = s390_r2;
1519                         cinfo->struct_ret = 1;
1520                         cinfo->ret.size   = size;
1521                         cinfo->ret.vtsize = size;
1522                         gr++;
1523                         break;
1524                 }
1525                 case MONO_TYPE_TYPEDBYREF:
1526                         size = sizeof (MonoTypedRef);
1527                         cinfo->ret.reg    = s390_r2;
1528                         cinfo->struct_ret = 1;
1529                         cinfo->ret.size   = size;
1530                         cinfo->ret.vtsize = size;
1531                         gr++;
1532                         break;
1533                 case MONO_TYPE_VOID:
1534                         break;
1535                 default:
1536                         g_error ("Can't handle as return value 0x%x", sig->ret->type);
1537         }
1538
1539         if (sig->hasthis) {
1540                 cinfo->args[nParm].size = sizeof(gpointer);
1541                 add_general (&gr, sz, cinfo->args+nParm);
1542                 nParm++;
1543         }
1544
1545         /*----------------------------------------------------------*/
1546         /* We determine the size of the parameter code and stack    */
1547         /* requirements by checking the types and sizes of the      */
1548         /* parameters.                                              */
1549         /*----------------------------------------------------------*/
1550
1551         for (i = 0; i < sig->param_count; ++i) {
1552                 MonoType *ptype;
1553
1554                 /*--------------------------------------------------*/
1555                 /* Handle vararg type calls. All args are put on    */
1556                 /* the stack.                                       */
1557                 /*--------------------------------------------------*/
1558                 if ((sig->call_convention == MONO_CALL_VARARG) &&
1559                     (i == sig->sentinelpos)) {
1560                         gr = S390_LAST_ARG_REG + 1;
1561                         add_general (&gr, sz, &cinfo->sigCookie);
1562                 }
1563
1564                 if (sig->params [i]->byref) {
1565                         add_general (&gr, sz, cinfo->args+nParm);
1566                         cinfo->args[nParm].size = sizeof(gpointer);
1567                         nParm++;
1568                         continue;
1569                 }
1570
1571                 ptype = mono_type_get_underlying_type (sig->params [i]);
1572                 ptype = mini_get_basic_type_from_generic (gsctx, ptype);
1573                 simpletype = ptype->type;
1574                 cinfo->args[nParm].type = simpletype;
1575                 switch (simpletype) {
1576                 case MONO_TYPE_BOOLEAN:
1577                 case MONO_TYPE_I1:
1578                 case MONO_TYPE_U1:
1579                         cinfo->args[nParm].size = sizeof(char);
1580                         add_general (&gr, sz, cinfo->args+nParm);
1581                         nParm++;
1582                         break;
1583                 case MONO_TYPE_I2:
1584                 case MONO_TYPE_U2:
1585                 case MONO_TYPE_CHAR:
1586                         cinfo->args[nParm].size = sizeof(short);
1587                         add_general (&gr, sz, cinfo->args+nParm);
1588                         nParm++;
1589                         break;
1590                 case MONO_TYPE_I4:
1591                 case MONO_TYPE_U4:
1592                         cinfo->args[nParm].size = sizeof(int);
1593                         add_general (&gr, sz, cinfo->args+nParm);
1594                         nParm++;
1595                         break;
1596                 case MONO_TYPE_I:
1597                 case MONO_TYPE_U:
1598                 case MONO_TYPE_PTR:
1599                 case MONO_TYPE_FNPTR:
1600                 case MONO_TYPE_CLASS:
1601                 case MONO_TYPE_OBJECT:
1602                 case MONO_TYPE_STRING:
1603                 case MONO_TYPE_SZARRAY:
1604                 case MONO_TYPE_ARRAY:
1605                         cinfo->args[nParm].size = sizeof(gpointer);
1606                         add_general (&gr, sz, cinfo->args+nParm);
1607                         nParm++;
1608                         break;
1609                 case MONO_TYPE_I8:
1610                 case MONO_TYPE_U8:
1611                         cinfo->args[nParm].size = sizeof(long long);
1612                         add_general (&gr, sz, cinfo->args+nParm);
1613                         nParm++;
1614                         break;
1615                 case MONO_TYPE_R4:
1616                         cinfo->args[nParm].size = sizeof(float);
1617                         add_float (&fr, sz, cinfo->args+nParm);
1618                         nParm++;
1619                         break;
1620                 case MONO_TYPE_R8:
1621                         cinfo->args[nParm].size = sizeof(double);
1622                         add_float (&fr, sz, cinfo->args+nParm);
1623                         nParm++;
1624                         break;
1625                 case MONO_TYPE_GENERICINST:
1626                         if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
1627                                 cinfo->args[nParm].size = sizeof(gpointer);
1628                                 add_general (&gr, sz, cinfo->args+nParm);
1629                                 nParm++;
1630                                 break;
1631                         }
1632                         /* Fall through */
1633                 case MONO_TYPE_VALUETYPE: {
1634                         MonoMarshalType *info;
1635                         MonoClass *klass = mono_class_from_mono_type (sig->params [i]);
1636                         if (sig->pinvoke)
1637                                 size = mono_class_native_size (klass, &align);
1638                         else
1639                                 size = mono_class_value_size (klass, &align);
1640
1641                         info = mono_marshal_load_type_info (klass);
1642
1643                         if ((info->native_size == sizeof(float)) &&
1644                             (info->num_fields  == 1) &&
1645                             (info->fields[0].field->type->type == MONO_TYPE_R4)) {
1646                                 cinfo->args[nParm].size = sizeof(float);
1647                                 add_float(&fr, sz, cinfo->args+nParm);
1648                                 nParm ++;
1649                                 break;
1650                         }
1651
1652                         if ((info->native_size == sizeof(double)) &&
1653                             (info->num_fields  == 1) &&
1654                             (info->fields[0].field->type->type == MONO_TYPE_R8)) {
1655                                 cinfo->args[nParm].size = sizeof(double);
1656                                 add_float(&fr, sz, cinfo->args+nParm);
1657                                 nParm ++;
1658                                 break;
1659                         }
1660
1661                         cinfo->args[nParm].vtsize  = 0;
1662                         cinfo->args[nParm].size    = 0;
1663
1664                         switch (size) {
1665                                 /*----------------------------------*/
1666                                 /* On S/390, structures of size 1,  */
1667                                 /* 2, 4, and 8 bytes are passed in  */
1668                                 /* (a) register(s).                 */
1669                                 /*----------------------------------*/
1670                                 case 0:
1671                                 case 1:
1672                                 case 2:
1673                                 case 4:
1674                                 case 8:
1675                                         add_general(&gr, sz, cinfo->args+nParm);
1676                                         cinfo->args[nParm].size    = size;
1677                                         cinfo->args[nParm].regtype = RegTypeStructByVal;
1678                                         nParm++;
1679                                         sz->local_size            += sizeof(long);
1680                                         break;
1681                                 default:
1682                                         add_stackParm(&gr, sz, cinfo->args+nParm, size);
1683                                         nParm++;
1684                         }
1685                 }
1686                         break;
1687                 case MONO_TYPE_TYPEDBYREF: {
1688                         int size = sizeof (MonoTypedRef);
1689
1690                         cinfo->args[nParm].vtsize  = 0;
1691                         cinfo->args[nParm].size    = 0;
1692
1693                         switch (size) {
1694                                 /*----------------------------------*/
1695                                 /* On S/390, structures of size 1,  */
1696                                 /* 2, 4, and 8 bytes are passed in  */
1697                                 /* (a) register(s).                 */
1698                                 /*----------------------------------*/
1699                                 case 0:
1700                                 case 1:
1701                                 case 2:
1702                                 case 4:
1703                                 case 8:
1704                                         add_general(&gr, sz, cinfo->args+nParm);
1705                                         cinfo->args[nParm].size    = size;
1706                                         cinfo->args[nParm].regtype = RegTypeStructByVal;
1707                                         nParm++;
1708                                         sz->local_size            += sizeof(long);
1709                                         break;
1710                                 default:
1711                                         add_stackParm(&gr, sz, cinfo->args+nParm, size);
1712                                         nParm++;
1713                         }
1714                 }
1715                         break;
1716                 default:
1717                         g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1718                 }
1719         }
1720
1721         /*----------------------------------------------------------*/
1722         /* Handle the case where there are no implicit arguments    */
1723         /*----------------------------------------------------------*/
1724         if ((sig->call_convention == MONO_CALL_VARARG) &&
1725             (sig->param_count == sig->sentinelpos)) {
1726                 gr = S390_LAST_ARG_REG + 1;
1727                 add_general (&gr, sz, &cinfo->sigCookie);
1728         }
1729
1730         /*----------------------------------------------------------*/
1731         /* If we are passing a structure back then if it won't be   */
1732         /* in a register(s) then we make room at the end of the     */
1733         /* parameters that may have been placed on the stack        */
1734         /*----------------------------------------------------------*/
1735         if (cinfo->struct_ret) {
1736                 cinfo->ret.offset = sz->stack_size;
1737                 switch (cinfo->ret.size) {
1738                 case 0:
1739                 case 1:
1740                 case 2:
1741                 case 4:
1742                 case 8:
1743                         break;
1744                 default:
1745                         sz->stack_size   += S390_ALIGN(cinfo->ret.size, align);
1746                 }
1747         }
1748
1749         cinfo->lastgr   = gr;
1750         sz->stack_size  = sz->stack_size + sz->local_size + sz->parm_size +
1751                           sz->offset;
1752         sz->stack_size  = S390_ALIGN(sz->stack_size, sizeof(long));
1753
1754         return (cinfo);
1755 }
1756
1757 /*========================= End of Function ========================*/
1758
1759 /*------------------------------------------------------------------*/
1760 /*                                                                  */
1761 /* Name         - mono_arch_allocate_vars                           */
1762 /*                                                                  */
1763 /* Function     - Set var information according to the calling      */
1764 /*                convention for S/390. The local var stuff should  */
1765 /*                most likely be split in another method.           */
1766 /*                                                                  */
1767 /* Parameter    - @m - Compile unit.                                */
1768 /*                                                                  */
1769 /*------------------------------------------------------------------*/
1770
1771 void
1772 mono_arch_allocate_vars (MonoCompile *cfg)
1773 {
1774         MonoMethodSignature *sig;
1775         MonoMethodHeader *header;
1776         MonoInst *inst;
1777         CallInfo *cinfo;
1778         int iParm, iVar, offset, size, align, curinst;
1779         int frame_reg = STK_BASE;
1780         int sArg, eArg;
1781
1782         header  = mono_method_get_header (cfg->method);
1783
1784         cfg->flags |= MONO_CFG_HAS_SPILLUP;
1785
1786         /*---------------------------------------------------------*/
1787         /* We use the frame register also for any method that has  */
1788         /* filter clauses. This way, when the handlers are called, */
1789         /* the code will reference local variables using the frame */
1790         /* reg instead of the stack pointer: if we had to restore  */
1791         /* the stack pointer, we'd corrupt the method frames that  */
1792         /* are already on the stack (since filters get called      */
1793         /* before stack unwinding happens) when the filter code    */
1794         /* would call any method.                                  */
1795         /*---------------------------------------------------------*/
1796         if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1797                 frame_reg = s390_r11;
1798
1799         cfg->frame_reg = frame_reg;
1800
1801         cfg->arch.bkchain_reg = -1;
1802
1803         if (frame_reg != STK_BASE)
1804                 cfg->used_int_regs |= 1 << frame_reg;
1805
1806         sig     = mono_method_signature (cfg->method);
1807
1808         cinfo   = get_call_info (cfg, cfg->mempool, sig, sig->pinvoke);
1809
1810         if (!cinfo->struct_ret) {
1811                 switch (mono_type_get_underlying_type (sig->ret)->type) {
1812                 case MONO_TYPE_VOID:
1813                         break;
1814                 default:
1815                         cfg->ret->opcode = OP_REGVAR;
1816                         cfg->ret->dreg   = s390_r2;
1817                         break;
1818                 }
1819         }
1820
1821         /*--------------------------------------------------------------*/
1822         /* local vars are at a positive offset from the stack pointer   */
1823         /* also note that if the function uses alloca, we use s390_r11  */
1824         /* to point at the local variables.                             */
1825         /* add parameter area size for called functions                 */
1826         /*--------------------------------------------------------------*/
1827         offset          = (cfg->param_area + S390_MINIMAL_STACK_SIZE);
1828         cfg->sig_cookie = 0;
1829
1830         if (cinfo->struct_ret) {
1831                 inst               = cfg->vret_addr;
1832                 offset             = S390_ALIGN(offset, sizeof(gpointer));
1833                 inst->inst_offset  = offset;
1834                 inst->opcode       = OP_REGOFFSET;
1835                 inst->inst_basereg = frame_reg;
1836                 offset            += sizeof(gpointer);
1837                 if (G_UNLIKELY (cfg->verbose_level > 1)) {
1838                         printf ("vret_addr =");
1839                         mono_print_ins (cfg->vret_addr);
1840                 }
1841         }
1842
1843         if (sig->hasthis) {
1844                 inst = cfg->args [0];
1845                 if (inst->opcode != OP_REGVAR) {
1846                         inst->opcode       = OP_REGOFFSET;
1847                         inst->inst_basereg = frame_reg;
1848                         offset             = S390_ALIGN(offset, sizeof(gpointer));
1849                         inst->inst_offset  = offset;
1850                         offset            += sizeof (gpointer);
1851                 }
1852                 curinst = sArg = 1;
1853         } else {
1854                 curinst = sArg = 0;
1855         }
1856
1857         eArg = sig->param_count + sArg;
1858
1859         if (sig->call_convention == MONO_CALL_VARARG)
1860                 cfg->sig_cookie += S390_MINIMAL_STACK_SIZE;
1861
1862         for (iParm = sArg; iParm < eArg; ++iParm) {
1863                 inst = cfg->args [curinst];
1864                 if (inst->opcode != OP_REGVAR) {
1865                         switch (cinfo->args[iParm].regtype) {
1866                         case RegTypeStructByAddr : {
1867                                 MonoInst *indir;
1868
1869                                 size = sizeof (gpointer);
1870
1871                                 inst->opcode = OP_REGOFFSET;
1872                                 inst->inst_basereg = frame_reg;
1873                                 offset = S390_ALIGN (offset, sizeof (gpointer));
1874                                 inst->inst_offset = offset;
1875
1876                                 /* Add a level of indirection */
1877                                 MONO_INST_NEW (cfg, indir, 0);
1878                                 *indir = *inst;
1879                                 inst->opcode = OP_VTARG_ADDR;
1880                                 inst->inst_left = indir;
1881                         }
1882                                 break;
1883                         case RegTypeStructByAddrOnStack : {
1884                                 MonoInst *indir;
1885
1886                                 size = sizeof (gpointer);
1887
1888                                 /* Similar to the == STK_BASE case below */
1889                                 cfg->arch.bkchain_reg = s390_r12;
1890                                 cfg->used_int_regs |= 1 << cfg->arch.bkchain_reg;
1891
1892                                 inst->opcode = OP_REGOFFSET;
1893                                 inst->dreg = mono_alloc_preg (cfg);
1894                                 inst->inst_basereg = cfg->arch.bkchain_reg;
1895                                 inst->inst_offset = cinfo->args [iParm].offset;
1896
1897                                 /* Add a level of indirection */
1898                                 MONO_INST_NEW (cfg, indir, 0);
1899                                 *indir = *inst;
1900                                 inst->opcode = OP_VTARG_ADDR;
1901                                 inst->inst_left = indir;
1902                                 break;
1903                         }
1904                         case RegTypeStructByVal :
1905                                 size               = cinfo->args[iParm].size;
1906                                 offset             = S390_ALIGN(offset, size);
1907                                 inst->opcode = OP_REGOFFSET;
1908                                 inst->inst_basereg = frame_reg;
1909                                 inst->inst_offset = offset;
1910                                 break;
1911                         default :
1912                                 if (cinfo->args [iParm].reg == STK_BASE) {
1913                                         /*
1914                                          * These arguments are in the previous frame, so we can't
1915                                          * compute their offset from the current frame pointer right
1916                                          * now, since cfg->stack_offset is not yet known, so dedicate a
1917                                          * register holding the previous frame pointer.
1918                                          */
1919                                         cfg->arch.bkchain_reg = s390_r12;
1920                                         cfg->used_int_regs |= 1 << cfg->arch.bkchain_reg;
1921
1922                                         inst->opcode       = OP_REGOFFSET;
1923                                         inst->inst_basereg = cfg->arch.bkchain_reg;
1924                                         size               = (cinfo->args[iParm].size < 8
1925                                                                           ? 8 - cinfo->args[iParm].size
1926                                                                           : 0);
1927                                         inst->inst_offset  = cinfo->args [iParm].offset + size;
1928                                         size = sizeof (long);
1929                                 } else {
1930                                         inst->opcode       = OP_REGOFFSET;
1931                                         inst->inst_basereg = frame_reg;
1932                                         size               = (cinfo->args[iParm].size < 8
1933                                                                           ? sizeof(int)
1934                                                                           : sizeof(long));
1935                                         offset             = S390_ALIGN(offset, size);
1936                                         inst->inst_offset  = offset;
1937                                 }
1938                                 break;
1939                         }
1940                         if ((sig->call_convention == MONO_CALL_VARARG) &&
1941                             (cinfo->args[iParm].regtype != RegTypeGeneral) &&
1942                             (iParm < sig->sentinelpos))
1943                                 cfg->sig_cookie += size;
1944
1945                         offset += size;
1946                 }
1947                 curinst++;
1948         }
1949
1950         curinst = cfg->locals_start;
1951         for (iVar = curinst; iVar < cfg->num_varinfo; ++iVar) {
1952                 inst = cfg->varinfo [iVar];
1953                 if ((inst->flags & MONO_INST_IS_DEAD) ||
1954                     (inst->opcode == OP_REGVAR))
1955                         continue;
1956
1957                 /*--------------------------------------------------*/
1958                 /* inst->backend.is_pinvoke indicates native sized value types, */
1959                 /* this is used by the pinvoke wrappers when they   */
1960                 /* call functions returning structure               */
1961                 /*--------------------------------------------------*/
1962                 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1963                         size = mono_class_native_size (mono_class_from_mono_type(inst->inst_vtype), &align);
1964                 else
1965                         size = mono_type_size (inst->inst_vtype, &align);
1966
1967                 offset             = S390_ALIGN(offset, align);
1968                 inst->inst_offset  = offset;
1969                 inst->opcode       = OP_REGOFFSET;
1970                 inst->inst_basereg = frame_reg;
1971                 offset            += size;
1972                 DEBUG (g_print("allocating local %d to %ld, size: %d\n",
1973                                 iVar, inst->inst_offset, size));
1974         }
1975
1976         /*------------------------------------------------------*/
1977         /* Allow space for the trace method stack area if needed*/
1978         /*------------------------------------------------------*/
1979         if (mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method))
1980                 offset += S390_TRACE_STACK_SIZE;
1981
1982         /*------------------------------------------------------*/
1983         /* Reserve space to save LMF and caller saved registers */
1984         /*------------------------------------------------------*/
1985         if (cfg->method->save_lmf)
1986                 offset += sizeof (MonoLMF);
1987
1988         /*------------------------------------------------------*/
1989         /* align the offset                                     */
1990         /*------------------------------------------------------*/
1991         cfg->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1992
1993 }
1994
1995 /*========================= End of Function ========================*/
1996
1997 /*------------------------------------------------------------------*/
1998 /*                                                                  */
1999 /* Name         - mono_arch_create_vars                                 */
2000 /*------------------------------------------------------------------*/
2001
2002 void
2003 mono_arch_create_vars (MonoCompile *cfg)
2004 {
2005         MonoMethodSignature *sig;
2006         CallInfo *cinfo;
2007
2008         sig = mono_method_signature (cfg->method);
2009
2010         cinfo = get_call_info (cfg, cfg->mempool, sig, sig->pinvoke);
2011
2012         if (cinfo->struct_ret) {
2013                 cfg->vret_addr = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_ARG);
2014                 if (G_UNLIKELY (cfg->verbose_level > 1)) {
2015                         printf ("vret_addr = ");
2016                         mono_print_ins (cfg->vret_addr);
2017                 }
2018         }
2019 }
2020
2021 /*========================= End of Function ========================*/
2022
2023 static void
2024 add_outarg_reg2 (MonoCompile *cfg, MonoCallInst *call, ArgStorage storage, int reg, MonoInst *tree)
2025 {
2026         MonoInst *ins;
2027
2028         switch (storage) {
2029         case RegTypeGeneral:
2030                 MONO_INST_NEW (cfg, ins, OP_MOVE);
2031                 ins->dreg = mono_alloc_ireg (cfg);
2032                 ins->sreg1 = tree->dreg;
2033                 MONO_ADD_INS (cfg->cbb, ins);
2034                 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, FALSE);
2035                 break;
2036         case RegTypeFP:
2037                 MONO_INST_NEW (cfg, ins, OP_FMOVE);
2038                 ins->dreg = mono_alloc_freg (cfg);
2039                 ins->sreg1 = tree->dreg;
2040                 MONO_ADD_INS (cfg->cbb, ins);
2041                 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, TRUE);
2042                 break;
2043         case RegTypeFPR4:
2044                 MONO_INST_NEW (cfg, ins, OP_S390_SETF4RET);
2045                 ins->dreg = mono_alloc_freg (cfg);
2046                 ins->sreg1 = tree->dreg;
2047                 MONO_ADD_INS (cfg->cbb, ins);
2048                 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, TRUE);
2049                 break;
2050         default:
2051                 g_assert_not_reached ();
2052         }
2053 }
2054
2055 static void
2056 emit_sig_cookie (MonoCompile *cfg, MonoCallInst *call, CallInfo *cinfo)
2057 {
2058         MonoMethodSignature *tmpSig;
2059         MonoInst *sig_arg;
2060
2061         cfg->disable_aot = TRUE;
2062
2063         /*----------------------------------------------------------*/
2064         /* mono_ArgIterator_Setup assumes the signature cookie is   */
2065         /* passed first and all the arguments which were before it  */
2066         /* passed on the stack after the signature. So compensate   */
2067         /* by passing a different signature.                        */
2068         /*----------------------------------------------------------*/
2069         tmpSig = mono_metadata_signature_dup (call->signature);
2070         tmpSig->param_count -= call->signature->sentinelpos;
2071         tmpSig->sentinelpos  = 0;
2072         if (tmpSig->param_count > 0)
2073                 memcpy (tmpSig->params,
2074                         call->signature->params + call->signature->sentinelpos,
2075                         tmpSig->param_count * sizeof(MonoType *));
2076
2077         MONO_INST_NEW (cfg, sig_arg, OP_ICONST);
2078         sig_arg->dreg = mono_alloc_ireg (cfg);
2079         sig_arg->inst_p0 = tmpSig;
2080         MONO_ADD_INS (cfg->cbb, sig_arg);
2081
2082         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, STK_BASE,
2083                                                                  cinfo->sigCookie.offset, sig_arg->dreg);
2084 }
2085
2086 /*------------------------------------------------------------------*/
2087 /*                                                                  */
2088 /* Name         - mono_arch_emit_call                                   */
2089 /*                                                                  */
2090 /*------------------------------------------------------------------*/
2091
2092 void
2093 mono_arch_emit_call (MonoCompile *cfg, MonoCallInst *call)
2094 {
2095         MonoInst *in;
2096         MonoMethodSignature *sig;
2097         MonoInst *ins;
2098         int i, n, lParamArea;
2099         CallInfo *cinfo;
2100         ArgInfo *ainfo = NULL;
2101         int stackSize;
2102
2103         sig = call->signature;
2104         n = sig->param_count + sig->hasthis;
2105         DEBUG (g_print ("Call requires: %d parameters\n",n));
2106
2107         cinfo = get_call_info (cfg, cfg->mempool, sig, sig->pinvoke);
2108
2109         stackSize         = cinfo->sz.stack_size + cinfo->sz.local_size + cinfo->sz.parm_size + cinfo->sz.offset;
2110         call->stack_usage = MAX(stackSize, call->stack_usage);
2111         lParamArea        = MAX((call->stack_usage-S390_MINIMAL_STACK_SIZE-cinfo->sz.parm_size), 0);
2112         cfg->param_area   = MAX(((signed) cfg->param_area), lParamArea);
2113         cfg->flags       |= MONO_CFG_HAS_CALLS;
2114
2115         if (cinfo->struct_ret) {
2116                 MONO_INST_NEW (cfg, ins, OP_MOVE);
2117                 ins->sreg1 = call->vret_var->dreg;
2118                 ins->dreg = mono_alloc_preg (cfg);
2119                 MONO_ADD_INS (cfg->cbb, ins);
2120                 mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, cinfo->ret.reg, FALSE);
2121         }
2122
2123         for (i = 0; i < n; ++i) {
2124                 ainfo = cinfo->args + i;
2125                 MonoType *t;
2126
2127                 if (i >= sig->hasthis)
2128                         t = sig->params [i - sig->hasthis];
2129                 else
2130                         t = &mono_defaults.int_class->byval_arg;
2131                 t = mono_type_get_underlying_type (t);
2132
2133                 in = call->args [i];
2134
2135                 if ((sig->call_convention == MONO_CALL_VARARG) &&
2136                     (i == sig->sentinelpos)) {
2137                         emit_sig_cookie (cfg, call, cinfo);
2138                 }
2139
2140                 switch (ainfo->regtype) {
2141                 case RegTypeGeneral:
2142                         add_outarg_reg2 (cfg, call, ainfo->regtype, ainfo->reg, in);
2143                         break;
2144                 case RegTypeFP:
2145                         if (MONO_TYPE_ISSTRUCT (t)) {
2146                                 /* Valuetype passed in one fp register */
2147                                 ainfo->regtype = RegTypeStructByValInFP;
2148                                 /* Fall through */
2149                         } else {
2150                                 if (ainfo->size == 4)
2151                                         ainfo->regtype = RegTypeFPR4;
2152                                 add_outarg_reg2 (cfg, call, ainfo->regtype, ainfo->reg, in);
2153                                 break;
2154                         }
2155                 case RegTypeStructByVal:
2156                 case RegTypeStructByAddr:
2157                 case RegTypeStructByAddrOnStack: {
2158                         guint32 align;
2159                         guint32 size;
2160
2161                         if (sig->params [i - sig->hasthis]->type == MONO_TYPE_TYPEDBYREF) {
2162                                 size = sizeof (MonoTypedRef);
2163                                 align = sizeof (gpointer);
2164                         }
2165                         else
2166                                 if (sig->pinvoke)
2167                                         size = mono_type_native_stack_size (&in->klass->byval_arg, &align);
2168                                 else {
2169                                         /*
2170                                          * Other backends use mono_type_stack_size (), but that
2171                                          * aligns the size to 8, which is larger than the size of
2172                                          * the source, leading to reads of invalid memory if the
2173                                          * source is at the end of address space.
2174                                          */
2175                                         size = mono_class_value_size (in->klass, &align);
2176                                 }
2177
2178                         g_assert (in->klass);
2179
2180                         ainfo->offparm += cinfo->sz.offStruct;
2181
2182                         MONO_INST_NEW (cfg, ins, OP_OUTARG_VT);
2183                         ins->sreg1 = in->dreg;
2184                         ins->klass = in->klass;
2185                         ins->backend.size = ainfo->size;
2186                         ins->inst_p0 = call;
2187                         ins->inst_p1 = mono_mempool_alloc (cfg->mempool, sizeof (ArgInfo));
2188                         memcpy (ins->inst_p1, ainfo, sizeof (ArgInfo));
2189
2190                         MONO_ADD_INS (cfg->cbb, ins);
2191
2192                         if (ainfo->regtype == RegTypeStructByAddr) {
2193                                 /*
2194                                  * We use OP_OUTARG_VT to copy the valuetype to a stack location, then
2195                                  * use the normal OUTARG opcodes to pass the address of the location to
2196                                  * the callee.
2197                                  */
2198                                 int treg = mono_alloc_preg (cfg);
2199                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, treg,
2200                                                                                  STK_BASE, ainfo->offparm);
2201                                 mono_call_inst_add_outarg_reg (cfg, call, treg, ainfo->reg, FALSE);
2202                         } else if (ainfo->regtype == RegTypeStructByAddrOnStack) {
2203                                 /* The address of the valuetype is passed on the stack */
2204                                 int treg = mono_alloc_preg (cfg);
2205                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, treg,
2206                                                                                  STK_BASE, ainfo->offparm);
2207                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG,
2208                                                                                          ainfo->reg, ainfo->offset, treg);
2209                         }
2210                         break;
2211                 }
2212                 case RegTypeBase:
2213                         if (!t->byref && t->type == MONO_TYPE_R4) {
2214                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORER4_MEMBASE_REG,
2215                                                                                          STK_BASE, ainfo->offset + 4,
2216                                                                                          in->dreg);
2217                         } else if (!t->byref && (t->type == MONO_TYPE_R8)) {
2218                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORER8_MEMBASE_REG,
2219                                                                                          STK_BASE, ainfo->offset,
2220                                                                                          in->dreg);
2221                         } else {
2222                                 MONO_INST_NEW (cfg, ins, OP_STORE_MEMBASE_REG);
2223                                 ins->inst_destbasereg = STK_BASE;
2224                                 ins->inst_offset = ainfo->offset;
2225                                 ins->sreg1 = in->dreg;
2226
2227                                 /* This is needed by MonoTypedRef->value to point to the correct data */
2228                                 if ((sig->call_convention == MONO_CALL_VARARG) &&
2229                                         (i >= sig->sentinelpos)) {
2230                                         switch (ainfo->size) {
2231                                         case 1:
2232                                                 ins->opcode = OP_STOREI1_MEMBASE_REG;
2233                                                 break;
2234                                         case 2:
2235                                                 ins->opcode = OP_STOREI2_MEMBASE_REG;
2236                                                 break;
2237                                         case 4:
2238                                                 ins->opcode = OP_STOREI4_MEMBASE_REG;
2239                                                 break;
2240                                         default:
2241                                                 break;
2242                                         }
2243                                 }
2244
2245                                 MONO_ADD_INS (cfg->cbb, ins);
2246                         }
2247                         break;
2248                 default:
2249                         g_assert_not_reached ();
2250                         break;
2251                 }
2252         }
2253
2254         /*
2255          * Handle the case where there are no implicit arguments
2256          */
2257         if ((sig->call_convention == MONO_CALL_VARARG) &&
2258             (i == sig->sentinelpos)) {
2259                 emit_sig_cookie (cfg, call, cinfo);
2260         }
2261 }
2262
2263 /*========================= End of Function ========================*/
2264
2265 /*------------------------------------------------------------------*/
2266 /*                                                                  */
2267 /* Name         - mono_arch_emit_outarg_vt                              */
2268 /*                                                                  */
2269 /*------------------------------------------------------------------*/
2270
2271 void
2272 mono_arch_emit_outarg_vt (MonoCompile *cfg, MonoInst *ins, MonoInst *src)
2273 {
2274         MonoCallInst *call = (MonoCallInst*)ins->inst_p0;
2275         ArgInfo *ainfo = (ArgInfo*)ins->inst_p1;
2276         int size = ins->backend.size;
2277
2278         if (ainfo->regtype == RegTypeStructByVal) {
2279                 /*
2280                                 arg->ins.sreg1  = ainfo->reg;
2281                                 arg->ins.opcode = OP_OUTARG_VT;
2282                                 arg->size       = ainfo->size;
2283                                 arg->offset     = ainfo->offset;
2284                                 arg->offPrm     = ainfo->offparm + cinfo->sz.offStruct;
2285                 */
2286                 if (ainfo->reg != STK_BASE) {
2287                         MONO_OUTPUT_VTR (cfg, size, ainfo->reg, src->dreg, 0);
2288                 } else {
2289                         MONO_OUTPUT_VTS (cfg, size, ainfo->reg, ainfo->offset,
2290                                                           src->dreg, 0);
2291                 }
2292         } else if (ainfo->regtype == RegTypeStructByValInFP) {
2293                 int dreg = mono_alloc_freg (cfg);
2294
2295                 if (ainfo->size == 4) {
2296                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADR4_MEMBASE, dreg, src->dreg, 0);
2297                         MONO_EMIT_NEW_UNALU (cfg, OP_S390_SETF4RET, dreg, dreg);
2298                 } else {
2299                         g_assert (ainfo->size == 8);
2300
2301                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADR8_MEMBASE, dreg, src->dreg, 0);
2302                 }
2303
2304                 mono_call_inst_add_outarg_reg (cfg, call, dreg, ainfo->reg, TRUE);
2305         } else {
2306                 MONO_EMIT_NEW_MOVE (cfg, STK_BASE, ainfo->offparm,
2307                                                          src->dreg, 0, size);
2308         }
2309 }
2310
2311 /*------------------------------------------------------------------*/
2312 /*                                                                  */
2313 /* Name         - mono_arch_emit_setret                                 */
2314 /*                                                                  */
2315 /*------------------------------------------------------------------*/
2316
2317 void
2318 mono_arch_emit_setret (MonoCompile *cfg, MonoMethod *method, MonoInst *val)
2319 {
2320         MonoType *ret = mono_type_get_underlying_type (mono_method_signature (method)->ret);
2321
2322         if (!ret->byref) {
2323                 if (ret->type == MONO_TYPE_R4) {
2324                         MONO_EMIT_NEW_UNALU (cfg, OP_S390_SETF4RET, s390_f0, val->dreg);
2325                         return;
2326                 } else if (ret->type == MONO_TYPE_R8) {
2327                         MONO_EMIT_NEW_UNALU (cfg, OP_FMOVE, s390_f0, val->dreg);
2328                         return;
2329                 }
2330         }
2331
2332         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->ret->dreg, val->dreg);
2333 }
2334
2335 /*========================= End of Function ========================*/
2336
2337 /*------------------------------------------------------------------*/
2338 /*                                                                  */
2339 /* Name         - mono_arch_instrument_mem_needs                    */
2340 /*                                                                  */
2341 /* Function     - Allow tracing to work with this interface (with   */
2342 /*                an optional argument).                            */
2343 /*                                                                  */
2344 /*------------------------------------------------------------------*/
2345
2346 void
2347 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
2348 {
2349         /* no stack room needed now (may be needed for FASTCALL-trace support) */
2350         *stack = 0;
2351         /* split prolog-epilog requirements? */
2352         *code = 50; /* max bytes needed: check this number */
2353 }
2354
2355 /*========================= End of Function ========================*/
2356
2357 /*------------------------------------------------------------------*/
2358 /*                                                                  */
2359 /* Name         - mono_arch_instrument_prolog                       */
2360 /*                                                                  */
2361 /* Function     - Create an "instrumented" prolog.                  */
2362 /*                                                                  */
2363 /*------------------------------------------------------------------*/
2364
2365 void*
2366 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
2367                              gboolean enable_arguments)
2368 {
2369         guchar  *code = p;
2370         int     parmOffset,
2371                 fpOffset,
2372                 baseReg;
2373
2374         parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
2375         if (cfg->method->save_lmf)
2376                 parmOffset -= sizeof(MonoLMF);
2377         fpOffset   = parmOffset + (5*sizeof(gpointer));
2378         if ((!has_ld) && (fpOffset > 4096)) {
2379                 s390_lgr (code, s390_r12, STK_BASE);
2380                 baseReg = s390_r12;
2381                 while (fpOffset > 4096) {
2382                         s390_aghi (code, baseReg, 4096);
2383                         fpOffset   -= 4096;
2384                         parmOffset -= 4096;
2385                 }
2386         } else {
2387                 baseReg = STK_BASE;
2388         }
2389
2390         s390_stmg (code, s390_r2, s390_r6, STK_BASE, parmOffset);
2391         if (has_ld) {
2392                 s390_stdy (code, s390_f0, 0, STK_BASE, fpOffset);
2393                 s390_stdy (code, s390_f2, 0, STK_BASE, fpOffset+sizeof(gdouble));
2394                 s390_stdy (code, s390_f4, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
2395                 s390_stdy (code, s390_f6, 0, STK_BASE, fpOffset+3*sizeof(gdouble));
2396         } else {
2397                 s390_std  (code, s390_f0, 0, baseReg, fpOffset);
2398                 s390_std  (code, s390_f2, 0, baseReg, fpOffset+sizeof(gdouble));
2399                 s390_std  (code, s390_f4, 0, baseReg, fpOffset+2*sizeof(gdouble));
2400                 s390_std  (code, s390_f6, 0, baseReg, fpOffset+3*sizeof(gdouble));
2401         }
2402         s390_basr (code, s390_r13, 0);
2403         s390_j    (code, 10);
2404         s390_llong(code, cfg->method);
2405         s390_llong(code, func);
2406         s390_lg   (code, s390_r2, 0, s390_r13, 4);
2407         if (has_ld)
2408                 s390_lay  (code, s390_r3, 0, STK_BASE, parmOffset);
2409         else
2410                 s390_la   (code, s390_r3, 0, baseReg, parmOffset);
2411         s390_lgr  (code, s390_r4, STK_BASE);
2412         s390_aghi (code, s390_r4, cfg->stack_usage);
2413         s390_lg   (code, s390_r1, 0, s390_r13, 12);
2414         s390_basr (code, s390_r14, s390_r1);
2415         if (has_ld) {
2416                 s390_ldy  (code, s390_f6, 0, STK_BASE, fpOffset+3*sizeof(gdouble));
2417                 s390_ldy  (code, s390_f4, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
2418                 s390_ldy  (code, s390_f2, 0, STK_BASE, fpOffset+sizeof(gdouble));
2419                 s390_ldy  (code, s390_f0, 0, STK_BASE, fpOffset);
2420         } else {
2421                 s390_ld   (code, s390_f6, 0, baseReg, fpOffset+3*sizeof(gdouble));
2422                 s390_ld   (code, s390_f4, 0, baseReg, fpOffset+2*sizeof(gdouble));
2423                 s390_ld   (code, s390_f2, 0, baseReg, fpOffset+sizeof(gdouble));
2424                 s390_ld   (code, s390_f0, 0, baseReg, fpOffset);
2425         }
2426         s390_lmg  (code, s390_r2, s390_r6, STK_BASE, parmOffset);
2427
2428         return code;
2429 }
2430
2431 /*========================= End of Function ========================*/
2432
2433 /*------------------------------------------------------------------*/
2434 /*                                                                  */
2435 /* Name         - mono_arch_instrument_epilog                       */
2436 /*                                                                  */
2437 /* Function     - Create an epilog that will handle the returned    */
2438 /*                values used in instrumentation.                   */
2439 /*                                                                  */
2440 /*------------------------------------------------------------------*/
2441
2442 void*
2443 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
2444 {
2445         guchar     *code = p;
2446         int        save_mode = SAVE_NONE,
2447                    saveOffset;
2448         MonoMethod *method = cfg->method;
2449         int        rtype = mono_type_get_underlying_type (mono_method_signature (method)->ret)->type;
2450
2451         saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
2452         if (method->save_lmf)
2453                 saveOffset -= sizeof(MonoLMF);
2454
2455 handle_enum:
2456         switch (rtype) {
2457         case MONO_TYPE_VOID:
2458                 /* special case string .ctor icall */
2459                 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
2460                         save_mode = SAVE_ONE;
2461                 else
2462                         save_mode = SAVE_NONE;
2463                 break;
2464         case MONO_TYPE_I8:
2465         case MONO_TYPE_U8:
2466                 save_mode = SAVE_ONE;
2467                 break;
2468         case MONO_TYPE_R4:
2469                 save_mode = SAVE_R4;
2470                 break;
2471         case MONO_TYPE_R8:
2472                 save_mode = SAVE_R8;
2473                 break;
2474         case MONO_TYPE_VALUETYPE:
2475                 if (mono_method_signature (method)->ret->data.klass->enumtype) {
2476                         rtype = mono_class_enum_basetype (mono_method_signature (method)->ret->data.klass)->type;
2477                         goto handle_enum;
2478                 }
2479                 save_mode = SAVE_STRUCT;
2480                 break;
2481         default:
2482                 save_mode = SAVE_ONE;
2483                 break;
2484         }
2485
2486         switch (save_mode) {
2487         case SAVE_ONE:
2488                 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2489                 if (enable_arguments) {
2490                         s390_lgr (code, s390_r3, s390_r2);
2491                 }
2492                 break;
2493         case SAVE_R4:
2494                 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2495                 if (enable_arguments) {
2496                         s390_ldebr (code, s390_f0, s390_f0);
2497                 }
2498                 break;
2499         case SAVE_R8:
2500                 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2501                 break;
2502         case SAVE_STRUCT:
2503                 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2504                 if (enable_arguments) {
2505                         s390_lg (code, s390_r3, 0, cfg->frame_reg,
2506                                  S390_MINIMAL_STACK_SIZE+cfg->param_area);
2507                 }
2508                 break;
2509         case SAVE_NONE:
2510         default:
2511                 break;
2512         }
2513
2514         s390_basr (code, s390_r13, 0);
2515         s390_j    (code, 10);
2516         s390_llong(code, cfg->method);
2517         s390_llong(code, func);
2518         s390_lg   (code, s390_r2, 0, s390_r13, 4);
2519         s390_lg   (code, s390_r1, 0, s390_r13, 12);
2520         s390_basr (code, s390_r14, s390_r1);
2521
2522         switch (save_mode) {
2523         case SAVE_ONE:
2524                 s390_lg  (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2525                 break;
2526         case SAVE_R4:
2527         case SAVE_R8:
2528                 s390_ld  (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2529                 break;
2530         case SAVE_STRUCT:
2531                 s390_lg  (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2532                 break;
2533         case SAVE_NONE:
2534         default:
2535                 break;
2536         }
2537
2538         return code;
2539 }
2540
2541 /*========================= End of Function ========================*/
2542
2543 void
2544 mono_arch_peephole_pass_1 (MonoCompile *cfg, MonoBasicBlock *bb)
2545 {
2546 }
2547
2548 /*------------------------------------------------------------------*/
2549 /*                                                                  */
2550 /* Name         - mono_arch_peephole_pass                                     */
2551 /*                                                                  */
2552 /* Function     - Form a peephole pass at the code looking for      */
2553 /*                simple optimizations.                             */
2554 /*                                                                  */
2555 /*------------------------------------------------------------------*/
2556
2557 void
2558 mono_arch_peephole_pass_2 (MonoCompile *cfg, MonoBasicBlock *bb)
2559 {
2560         MonoInst *ins, *n;
2561
2562         MONO_BB_FOR_EACH_INS_SAFE (bb, n, ins) {
2563                 mono_peephole_ins (bb, ins);
2564         }
2565 }
2566
2567 /*========================= End of Function ========================*/
2568
2569 void
2570 mono_arch_lowering_pass (MonoCompile *cfg, MonoBasicBlock *bb)
2571 {
2572         MonoInst *ins, *next;
2573
2574         MONO_BB_FOR_EACH_INS_SAFE (bb, next, ins) {
2575                 switch (ins->opcode) {
2576                 case OP_DIV_IMM:
2577                 case OP_REM_IMM:
2578                 case OP_IDIV_IMM:
2579                 case OP_IREM_IMM:
2580                 case OP_IDIV_UN_IMM:
2581                 case OP_IREM_UN_IMM:
2582                 case OP_LAND_IMM:
2583                 case OP_LOR_IMM:
2584                 case OP_LXOR_IMM:
2585                 case OP_LOCALLOC_IMM:
2586                         mono_decompose_op_imm (cfg, bb, ins);
2587                         break;
2588                 case OP_LADD_IMM:
2589                         if (!s390_is_imm16 (ins->inst_imm))
2590                                 /* This is created by the memcpy code which ignores is_inst_imm */
2591                                 mono_decompose_op_imm (cfg, bb, ins);
2592                         break;
2593                 default:
2594                         break;
2595                 }
2596         }
2597
2598         bb->max_vreg = cfg->next_vreg;
2599 }
2600
2601 /*========================= End of Function ========================*/
2602
2603 /*------------------------------------------------------------------*/
2604 /*                                                                  */
2605 /* Name         - emit_float_to_int                                 */
2606 /*                                                                  */
2607 /* Function     - Create instructions which will convert a floating */
2608 /*                point value to integer.                           */
2609 /*                                                                  */
2610 /*------------------------------------------------------------------*/
2611
2612 static guchar*
2613 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2614 {
2615         /* sreg is a float, dreg is an integer reg. */
2616         if (is_signed) {
2617                 s390_cfdbr (code, dreg, 5, sreg);
2618                 switch (size) {
2619                         case 1:
2620                                 s390_lghi (code, s390_r0, 0);
2621                                 s390_lghi (code, s390_r13, 0xff);
2622                                 s390_ltgr (code, dreg, dreg);
2623                                 s390_jnl  (code, 4);
2624                                 s390_lghi (code, s390_r0, 0x80);
2625                                 s390_ngr  (code, dreg, s390_r13);
2626                                 s390_ogr  (code, dreg, s390_r0);
2627                                 break;
2628                 }
2629         } else {
2630                 short *o[1];
2631                 s390_basr   (code, s390_r13, 0);
2632                 s390_j      (code, 10);
2633                 s390_llong  (code, 0x41e0000000000000);
2634                 s390_llong  (code, 0x41f0000000000000);
2635                 s390_ldr    (code, s390_f15, sreg);
2636                 s390_cdb    (code, s390_f15, 0, s390_r13, 4);
2637                 s390_jl     (code, 0); CODEPTR (code, o[0]);
2638                 s390_sdb    (code, s390_f15, 0, s390_r13, 12);
2639                 s390_cfdbr  (code, dreg, 7, s390_f15);
2640                 s390_j      (code, 4);
2641                 PTRSLOT (code, o[0]);
2642                 s390_cfdbr  (code, dreg, 5, sreg);
2643                 switch (size) {
2644                         case 1:
2645                                 s390_lghi (code, s390_r0, 0xff);
2646                                 s390_ngr  (code, dreg, s390_r0);
2647                                 break;
2648                         case 2:
2649                                 s390_lghi (code, s390_r0, -1);
2650                                 s390_srlg (code, s390_r0, s390_r0, 0, 16);
2651                                 s390_ngr  (code, dreg, s390_r0);
2652                                 break;
2653                 }
2654         }
2655         return code;
2656 }
2657
2658 /*========================= End of Function ========================*/
2659
2660 static gboolean is_unsigned (MonoInst *next)
2661 {
2662         if ((next) &&
2663                 (((next->opcode >= OP_IBNE_UN) &&
2664                   (next->opcode <= OP_IBLT_UN)) ||
2665                  ((next->opcode >= OP_LBNE_UN) &&
2666                   (next->opcode <= OP_LBLT_UN)) ||
2667                  ((next->opcode >= OP_COND_EXC_NE_UN) &&
2668                   (next->opcode <= OP_COND_EXC_LT_UN)) ||
2669                  ((next->opcode >= OP_COND_EXC_INE_UN) &&
2670                   (next->opcode <= OP_COND_EXC_ILT_UN)) ||
2671                  ((next->opcode == OP_CLT_UN) ||
2672                   (next->opcode == OP_CGT_UN)) ||
2673                  ((next->opcode == OP_ICLT_UN) ||
2674                   (next->opcode == OP_ICGT_UN) ||
2675                   (next->opcode == OP_LCLT_UN) ||
2676                   (next->opcode == OP_LCGT_UN))))
2677                 return TRUE;
2678         else
2679                 return FALSE;
2680 }
2681
2682 /*------------------------------------------------------------------*/
2683 /*                                                                  */
2684 /* Name         - mono_arch_output_basic_block                      */
2685 /*                                                                  */
2686 /* Function     - Perform the "real" work of emitting instructions  */
2687 /*                that will do the work of in the basic block.      */
2688 /*                                                                  */
2689 /*------------------------------------------------------------------*/
2690
2691 void
2692 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
2693 {
2694         MonoInst *ins;
2695         MonoCallInst *call;
2696         guint offset;
2697         guint8 *code = cfg->native_code + cfg->code_len;
2698         guint last_offset = 0;
2699         int max_len, cpos, src2;
2700
2701         /* we don't align basic blocks of loops on s390 */
2702
2703         if (cfg->verbose_level > 2)
2704                 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
2705
2706         cpos = bb->max_offset;
2707
2708         if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
2709                 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
2710                 //g_assert (!mono_compile_aot);
2711                 //cpos += 6;
2712                 //if (bb->cil_code)
2713                 //      cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
2714                 /* this is not thread save, but good enough */
2715                 /* fixme: howto handle overflows? */
2716                 //x86_inc_mem (code, &cov->data [bb->dfn].count);
2717         }
2718
2719         MONO_BB_FOR_EACH_INS (bb, ins) {
2720                 offset = code - cfg->native_code;
2721
2722                 max_len = ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
2723
2724                 if (offset > (cfg->code_size - max_len - 16)) {
2725                         cfg->code_size *= 2;
2726                         cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
2727                         code = cfg->native_code + offset;
2728                 }
2729
2730                 mono_debug_record_line_number (cfg, ins, offset);
2731
2732                 switch (ins->opcode) {
2733                 case OP_STOREI1_MEMBASE_IMM: {
2734                         s390_lghi (code, s390_r0, ins->inst_imm);
2735                         S390_LONG (code, stcy, stc, s390_r0, 0,
2736                                    ins->inst_destbasereg, ins->inst_offset);
2737                 }
2738                         break;
2739                 case OP_STOREI2_MEMBASE_IMM: {
2740                         s390_lghi (code, s390_r0, ins->inst_imm);
2741                         S390_LONG (code, sthy, sth, s390_r0, 0,
2742                                    ins->inst_destbasereg, ins->inst_offset);
2743                 }
2744                         break;
2745                 case OP_STOREI4_MEMBASE_IMM: {
2746                         if (s390_is_imm16(ins->inst_imm)) {
2747                                 s390_lghi (code, s390_r0, ins->inst_imm);
2748                         } else {
2749                                 s390_basr (code, s390_r13, 0);
2750                                 s390_j    (code, 6);
2751                                 s390_llong(code, ins->inst_imm);
2752                                 s390_lg   (code, s390_r0, 0, s390_r13, 4);
2753                         }
2754                         S390_LONG (code, sty, st, s390_r0, 0,
2755                                    ins->inst_destbasereg, ins->inst_offset);
2756                 }
2757                         break;
2758                 case OP_STORE_MEMBASE_IMM:
2759                 case OP_STOREI8_MEMBASE_IMM: {
2760                         if (s390_is_imm16(ins->inst_imm)) {
2761                                 s390_lghi (code, s390_r0, ins->inst_imm);
2762                         } else {
2763                                 s390_basr (code, s390_r13, 0);
2764                                 s390_j    (code, 6);
2765                                 s390_llong(code, ins->inst_imm);
2766                                 s390_lg   (code, s390_r0, 0, s390_r13, 4);
2767                         }
2768                         S390_LONG (code, stg, stg, s390_r0, 0,
2769                                    ins->inst_destbasereg, ins->inst_offset);
2770                 }
2771                         break;
2772                 case OP_STOREI1_MEMBASE_REG: {
2773                         S390_LONG (code, stcy, stc, ins->sreg1, 0,
2774                                    ins->inst_destbasereg, ins->inst_offset);
2775                 }
2776                         break;
2777                 case OP_STOREI2_MEMBASE_REG: {
2778                         S390_LONG (code, sthy, sth, ins->sreg1, 0,
2779                                    ins->inst_destbasereg, ins->inst_offset);
2780                 }
2781                         break;
2782                 case OP_STOREI4_MEMBASE_REG: {
2783                         S390_LONG (code, sty, st, ins->sreg1, 0,
2784                                    ins->inst_destbasereg, ins->inst_offset);
2785                 }
2786                         break;
2787                 case OP_STORE_MEMBASE_REG:
2788                 case OP_STOREI8_MEMBASE_REG: {
2789                         S390_LONG (code, stg, stg, ins->sreg1, 0,
2790                                    ins->inst_destbasereg, ins->inst_offset);
2791                 }
2792                         break;
2793                 case OP_LOADU4_MEM:
2794                         g_assert_not_reached ();
2795                         break;
2796                 case OP_LOAD_MEMBASE:
2797                 case OP_LOADI8_MEMBASE: {
2798                         S390_LONG (code, lg, lg, ins->dreg, 0,
2799                                    ins->inst_basereg, ins->inst_offset);
2800                 }
2801                         break;
2802                 case OP_LOADI4_MEMBASE: {
2803                         S390_LONG (code, lgf, lgf, ins->dreg, 0,
2804                                    ins->inst_basereg, ins->inst_offset);
2805                 }
2806                         break;
2807                 case OP_LOADU4_MEMBASE: {
2808                         S390_LONG (code, llgf, llgf, ins->dreg, 0,
2809                                    ins->inst_basereg, ins->inst_offset);
2810                 }
2811                         break;
2812                 case OP_LOADU1_MEMBASE: {
2813                         S390_LONG (code, llgc, llgc, ins->dreg, 0,
2814                                    ins->inst_basereg, ins->inst_offset);
2815                 }
2816                         break;
2817                 case OP_LOADI1_MEMBASE: {
2818                         S390_LONG (code, lgb, lgb, ins->dreg, 0,
2819                                    ins->inst_basereg, ins->inst_offset);
2820                 }
2821                         break;
2822                 case OP_LOADU2_MEMBASE: {
2823                         S390_LONG (code, llgh, llgh, ins->dreg, 0,
2824                                    ins->inst_basereg, ins->inst_offset);
2825                 }
2826                         break;
2827                 case OP_LOADI2_MEMBASE: {
2828                         S390_LONG (code, lgh, lgh, ins->dreg, 0,
2829                                    ins->inst_basereg, ins->inst_offset);
2830                 }
2831                         break;
2832                 case OP_LCONV_TO_I1: {
2833                         s390_lghi  (code, s390_r0, 0x80);
2834                         if (ins->dreg != ins->sreg1) {
2835                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2836                         }
2837                         s390_ngr  (code, s390_r0, ins->sreg1);
2838                         s390_jz   (code, 9);
2839                         s390_lghi (code, s390_r13, -1);
2840                         s390_sllg (code, s390_r13, s390_r13, 0, 8);
2841                         s390_ogr  (code, ins->dreg, s390_r13);
2842                 }
2843                         break;
2844                 case OP_LCONV_TO_I2: {
2845                         s390_lghi (code, s390_r0, 0x80);
2846                         s390_sllg (code, s390_r0, s390_r0, 0, 8);
2847                         if (ins->dreg != ins->sreg1) {
2848                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2849                         }
2850                         s390_ngr  (code, s390_r0, ins->sreg1);
2851                         s390_jz   (code, 9);
2852                         s390_lghi (code, s390_r13, -1);
2853                         s390_sllg (code, s390_r13, s390_r13, 0, 16);
2854                         s390_ogr  (code, ins->dreg, s390_r13);
2855                 }
2856                         break;
2857                 case OP_LCONV_TO_U1: {
2858                         s390_lghi (code, s390_r0, 0xff);
2859                         if (ins->dreg != ins->sreg1) {
2860                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2861                         }
2862                         s390_ngr  (code, ins->dreg, s390_r0);
2863                 }
2864                         break;
2865                 case OP_LCONV_TO_U2: {
2866                         s390_lghi (code, s390_r0, -1);
2867                         s390_sllg (code, s390_r0, s390_r0, 0, 48);
2868                         s390_srlg (code, s390_r0, s390_r0, 0, 48);
2869                         if (ins->dreg != ins->sreg1) {
2870                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2871                         }
2872                         s390_ngr  (code, ins->dreg, s390_r0);
2873                 }
2874                         break;
2875                 case OP_ICONV_TO_I1: {
2876                         s390_lhi  (code, s390_r0, 0x80);
2877                         if (ins->dreg != ins->sreg1) {
2878                                 s390_lr   (code, ins->dreg, ins->sreg1);
2879                         }
2880                         s390_nr   (code, s390_r0, ins->sreg1);
2881                         s390_jz   (code, 7);
2882                         s390_lhi  (code, s390_r13, -1);
2883                         s390_sll  (code, s390_r13, 0, 8);
2884                         s390_or   (code, ins->dreg, s390_r13);
2885                 }
2886                         break;
2887                 case OP_ICONV_TO_I2: {
2888                         s390_lhi  (code, s390_r0, 0x80);
2889                         s390_sll  (code, s390_r0, 0, 8);
2890                         if (ins->dreg != ins->sreg1) {
2891                                 s390_lr   (code, ins->dreg, ins->sreg1);
2892                         }
2893                         s390_nr   (code, s390_r0, ins->sreg1);
2894                         s390_jz   (code, 7);
2895                         s390_lhi  (code, s390_r13, -1);
2896                         s390_sll  (code, s390_r13, 0, 16);
2897                         s390_or   (code, ins->dreg, s390_r13);
2898                 }
2899                         break;
2900                 case OP_ICONV_TO_U1: {
2901                         s390_lhi  (code, s390_r0, 0xff);
2902                         if (ins->dreg != ins->sreg1) {
2903                                 s390_lr   (code, ins->dreg, ins->sreg1);
2904                         }
2905                         s390_nr   (code, ins->dreg, s390_r0);
2906                 }
2907                         break;
2908                 case OP_ICONV_TO_U2: {
2909                         s390_lhi  (code, s390_r0, -1);
2910                         s390_sll  (code, s390_r0, 0, 16);
2911                         s390_srl  (code, s390_r0, 0, 16);
2912                         if (ins->dreg != ins->sreg1) {
2913                                 s390_lr   (code, ins->dreg, ins->sreg1);
2914                         }
2915                         s390_nr   (code, ins->dreg, s390_r0);
2916                 }
2917                         break;
2918                 case OP_COMPARE:
2919                 case OP_LCOMPARE: {
2920                         if (is_unsigned (ins->next))
2921                                 s390_clgr (code, ins->sreg1, ins->sreg2);
2922                         else
2923                                 s390_cgr  (code, ins->sreg1, ins->sreg2);
2924                 }
2925                         break;
2926                 case OP_ICOMPARE: {
2927                         if (is_unsigned (ins->next))
2928                                 s390_clr  (code, ins->sreg1, ins->sreg2);
2929                         else
2930                                 s390_cr   (code, ins->sreg1, ins->sreg2);
2931                 }
2932                         break;
2933                 case OP_COMPARE_IMM:
2934                 case OP_LCOMPARE_IMM: {
2935                         if (s390_is_imm16 (ins->inst_imm)) {
2936                                 s390_lghi (code, s390_r0, ins->inst_imm);
2937                                 if (is_unsigned (ins->next))
2938                                         s390_clgr (code, ins->sreg1, s390_r0);
2939                                 else
2940                                         s390_cgr  (code, ins->sreg1, s390_r0);
2941                         } else {
2942                                 s390_basr (code, s390_r13, 0);
2943                                 s390_j    (code, 6);
2944                                 s390_llong(code, ins->inst_imm);
2945                                 if (is_unsigned (ins->next))
2946                                         s390_clg  (code, ins->sreg1, 0, s390_r13, 4);
2947                                 else
2948                                         s390_cg   (code, ins->sreg1, 0, s390_r13, 4);
2949                         }
2950                 }
2951                         break;
2952                 case OP_ICOMPARE_IMM: {
2953                         if (s390_is_imm16 (ins->inst_imm)) {
2954                                 s390_lghi (code, s390_r0, ins->inst_imm);
2955                                 if (is_unsigned (ins->next))
2956                                         s390_clr  (code, ins->sreg1, s390_r0);
2957                                 else
2958                                         s390_cr   (code, ins->sreg1, s390_r0);
2959                         }
2960                         else {
2961                                 s390_basr (code, s390_r13, 0);
2962                                 s390_j    (code, 4);
2963                                 s390_word (code, ins->inst_imm);
2964                                 if (is_unsigned (ins->next))
2965                                         s390_cl  (code, ins->sreg1, 0, s390_r13, 4);
2966                                 else
2967                                         s390_c   (code, ins->sreg1, 0, s390_r13, 4);
2968                         }
2969                 }
2970                         break;
2971                 case OP_BREAK: {
2972                         s390_basr  (code, s390_r13, 0);
2973                         s390_j     (code, 6);
2974                         mono_add_patch_info (cfg, code - cfg->native_code, MONO_PATCH_INFO_ABS,
2975                                              mono_break);
2976                         s390_llong (code, mono_break);
2977                         s390_lg    (code, s390_r14, 0, s390_r13, 4);
2978                         s390_basr  (code, s390_r14, s390_r14);
2979                 }
2980                         break;
2981                 case OP_ADDCC: {
2982                         CHECK_SRCDST_COM;
2983                         s390_agr  (code, ins->dreg, src2);
2984                 }
2985                         break;
2986                 case OP_LADD: {
2987                         CHECK_SRCDST_COM;
2988                         s390_agr   (code, ins->dreg, src2);
2989                 }
2990                         break;
2991                 case OP_ADC: {
2992                         CHECK_SRCDST_COM;
2993                         s390_alcgr (code, ins->dreg, src2);
2994                 }
2995                         break;
2996                 case OP_ADD_IMM: {
2997                         if (ins->dreg != ins->sreg1) {
2998                                 s390_lgr  (code, ins->dreg, ins->sreg1);
2999                         }
3000                         if (s390_is_imm16 (ins->inst_imm)) {
3001                                 s390_aghi (code, ins->dreg, ins->inst_imm);
3002                         } else {
3003                                 s390_basr (code, s390_r13, 0);
3004                                 s390_j    (code, 6);
3005                                 s390_llong(code, ins->inst_imm);
3006                                 s390_ag   (code, ins->dreg, 0, s390_r13, 4);
3007                         }
3008                 }
3009                         break;
3010                 case OP_LADD_IMM: {
3011                         if (ins->dreg != ins->sreg1) {
3012                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3013                         }
3014                         g_assert (s390_is_imm16 (ins->inst_imm));
3015                         s390_aghi (code, ins->dreg, ins->inst_imm);
3016                 }
3017                         break;
3018                 case OP_ADC_IMM: {
3019                         if (ins->dreg != ins->sreg1) {
3020                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3021                         }
3022                         if (s390_is_imm16 (ins->inst_imm)) {
3023                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3024                                 s390_alcgr (code, ins->dreg, s390_r0);
3025                         } else {
3026                                 s390_basr  (code, s390_r13, 0);
3027                                 s390_j     (code, 6);
3028                                 s390_llong (code, ins->inst_imm);
3029                                 s390_lg    (code, s390_r13, 0, s390_r13, 4);
3030                                 s390_alcgr (code, ins->dreg, s390_r13);
3031                         }
3032                 }
3033                         break;
3034                 case OP_IADD_OVF:
3035                 case OP_S390_IADD_OVF: {
3036                         CHECK_SRCDST_COM;
3037                         s390_ar    (code, ins->dreg, src2);
3038                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3039                         s390_lgfr  (code, ins->dreg, ins->dreg);
3040                 }
3041                         break;
3042                 case OP_IADD_OVF_UN:
3043                 case OP_S390_IADD_OVF_UN: {
3044                         CHECK_SRCDST_COM;
3045                         s390_algr  (code, ins->dreg, src2);
3046                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3047                         s390_llgfr (code, ins->dreg, ins->dreg);
3048                 }
3049                         break;
3050                 case OP_ADD_OVF_CARRY: {
3051                         CHECK_SRCDST_COM;
3052                         s390_lghi  (code, s390_r0, 0);
3053                         s390_lgr   (code, s390_r1, s390_r0);
3054                         s390_alcgr (code, s390_r0, s390_r1);
3055                         s390_agr   (code, ins->dreg, src2);
3056                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3057                         s390_agr   (code, ins->dreg, s390_r0);
3058                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3059                 }
3060                         break;
3061                 case OP_ADD_OVF_UN_CARRY: {
3062                         CHECK_SRCDST_COM;
3063                         s390_alcgr (code, ins->dreg, src2);
3064                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3065                 }
3066                         break;
3067                 case OP_SUBCC: {
3068                         CHECK_SRCDST_NCOM;
3069                         s390_sgr (code, ins->dreg, src2);
3070                 }
3071                         break;
3072                 case OP_LSUB: {
3073                         CHECK_SRCDST_NCOM;
3074                         s390_sgr  (code, ins->dreg, src2);
3075                 }
3076                         break;
3077                 case OP_SBB: {
3078                         CHECK_SRCDST_NCOM;
3079                         s390_slbgr(code, ins->dreg, src2);
3080                 }
3081                         break;
3082                 case OP_SUB_IMM: {
3083                         if (ins->dreg != ins->sreg1) {
3084                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3085                         }
3086                         if (s390_is_imm16 (-ins->inst_imm)) {
3087                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3088                                 s390_slgr  (code, ins->dreg, s390_r0);
3089                         } else {
3090                                 s390_basr (code, s390_r13, 0);
3091                                 s390_j    (code, 6);
3092                                 s390_llong(code, ins->inst_imm);
3093                                 s390_slg  (code, ins->dreg, 0, s390_r13, 4);
3094                         }
3095                 }
3096                         break;
3097                 case OP_LSUB_IMM: {
3098                         if (ins->dreg != ins->sreg1) {
3099                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3100                         }
3101                         if (s390_is_imm16 (-ins->inst_imm)) {
3102                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3103                                 s390_slgr  (code, ins->dreg, s390_r0);
3104                         } else {
3105                                 s390_basr (code, s390_r13, 0);
3106                                 s390_j    (code, 6);
3107                                 s390_llong(code, ins->inst_imm);
3108                                 s390_slg  (code, ins->dreg, 0, s390_r13, 4);
3109                         }
3110                 }
3111                         break;
3112                 case OP_SBB_IMM: {
3113                         if (ins->dreg != ins->sreg1) {
3114                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3115                         }
3116                         if (s390_is_imm16 (-ins->inst_imm)) {
3117                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3118                                 s390_slbgr (code, ins->dreg, s390_r0);
3119                         } else {
3120                                 s390_basr (code, s390_r13, 0);
3121                                 s390_j    (code, 6);
3122                                 s390_llong(code, ins->inst_imm);
3123                                 s390_slbg (code, ins->dreg, 0, s390_r13, 4);
3124                         }
3125                 }
3126                         break;
3127                 case OP_SUB_OVF_CARRY: {
3128                         CHECK_SRCDST_NCOM;
3129                         s390_lghi  (code, s390_r0, 0);
3130                         s390_lgr   (code, s390_r1, s390_r0);
3131                         s390_slbgr (code, s390_r0, s390_r1);
3132                         s390_sgr   (code, ins->dreg, src2);
3133                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3134                         s390_agr   (code, ins->dreg, s390_r0);
3135                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3136                 }
3137                         break;
3138                 case OP_SUB_OVF_UN_CARRY: {
3139                         CHECK_SRCDST_NCOM;
3140                         s390_slbgr (code, ins->dreg, src2);
3141                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3142                 }
3143                         break;
3144                 case OP_LAND: {
3145                         if (ins->sreg1 == ins->dreg) {
3146                                 s390_ngr  (code, ins->dreg, ins->sreg2);
3147                         }
3148                         else {
3149                                 if (ins->sreg2 == ins->dreg) {
3150                                         s390_ngr (code, ins->dreg, ins->sreg1);
3151                                 }
3152                                 else {
3153                                         s390_lgr (code, ins->dreg, ins->sreg1);
3154                                         s390_ngr (code, ins->dreg, ins->sreg2);
3155                                 }
3156                         }
3157                 }
3158                         break;
3159                 case OP_AND_IMM: {
3160                         if (ins->dreg != ins->sreg1) {
3161                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3162                         }
3163                         if (s390_is_imm16 (ins->inst_imm)) {
3164                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3165                                 s390_ngr  (code, ins->dreg, s390_r0);
3166                         } else {
3167                                 s390_basr (code, s390_r13, 0);
3168                                 s390_j    (code, 6);
3169                                 s390_llong(code, ins->inst_imm);
3170                                 s390_ng   (code, ins->dreg, 0, s390_r13, 4);
3171                         }
3172                 }
3173                         break;
3174                 case OP_LDIV: {
3175                         s390_lgr  (code, s390_r1, ins->sreg1);
3176                         s390_dsgr (code, s390_r0, ins->sreg2);
3177                         s390_lgr  (code, ins->dreg, s390_r1);
3178                 }
3179                         break;
3180                 case OP_LDIV_UN: {
3181                         s390_lgr   (code, s390_r1, ins->sreg1);
3182                         s390_lghi  (code, s390_r0, 0);
3183                         s390_dlgr  (code, s390_r0, ins->sreg2);
3184                         s390_lgr   (code, ins->dreg, s390_r1);
3185                 }
3186                         break;
3187                 case OP_LREM: {
3188                         s390_lgr  (code, s390_r1, ins->sreg1);
3189                         s390_dsgr (code, s390_r0, ins->sreg2);
3190                         s390_lgr  (code, ins->dreg, s390_r0);
3191                         break;
3192                 }
3193                 case OP_LREM_UN: {
3194                         s390_lgr   (code, s390_r1, ins->sreg1);
3195                         s390_lghi  (code, s390_r0, 0);
3196                         s390_dlgr  (code, s390_r0, ins->sreg2);
3197                         s390_lgr   (code, ins->dreg, s390_r0);
3198                 }
3199                         break;
3200                 case OP_LOR: {
3201                         if (ins->sreg1 == ins->dreg) {
3202                                 s390_ogr  (code, ins->dreg, ins->sreg2);
3203                         }
3204                         else {
3205                                 if (ins->sreg2 == ins->dreg) {
3206                                         s390_ogr (code, ins->dreg, ins->sreg1);
3207                                 }
3208                                 else {
3209                                         s390_lgr (code, ins->dreg, ins->sreg1);
3210                                         s390_ogr (code, ins->dreg, ins->sreg2);
3211                                 }
3212                         }
3213                 }
3214                         break;
3215                 case OP_OR_IMM: {
3216                         if (ins->dreg != ins->sreg1) {
3217                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3218                         }
3219                         if (s390_is_imm16 (ins->inst_imm)) {
3220                                 s390_lghi (code, s390_r0, ins->inst_imm);
3221                                 s390_ogr  (code, ins->dreg, s390_r0);
3222                         } else {
3223                                 s390_basr (code, s390_r13, 0);
3224                                 s390_j    (code, 6);
3225                                 s390_llong(code, ins->inst_imm);
3226                                 s390_og   (code, ins->dreg, 0, s390_r13, 4);
3227                         }
3228                 }
3229                         break;
3230                 case OP_LXOR: {
3231                         if (ins->sreg1 == ins->dreg) {
3232                                 s390_xgr  (code, ins->dreg, ins->sreg2);
3233                         }
3234                         else {
3235                                 if (ins->sreg2 == ins->dreg) {
3236                                         s390_xgr (code, ins->dreg, ins->sreg1);
3237                                 }
3238                                 else {
3239                                         s390_lgr (code, ins->dreg, ins->sreg1);
3240                                         s390_xgr (code, ins->dreg, ins->sreg2);
3241                                 }
3242                         }
3243                 }
3244                         break;
3245                 case OP_XOR_IMM: {
3246                         if (ins->dreg != ins->sreg1) {
3247                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3248                         }
3249                         if (s390_is_imm16 (ins->inst_imm)) {
3250                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3251                                 s390_xgr  (code, ins->dreg, s390_r0);
3252                         } else {
3253                                 s390_basr (code, s390_r13, 0);
3254                                 s390_j    (code, 6);
3255                                 s390_llong(code, ins->inst_imm);
3256                                 s390_xg   (code, ins->dreg, 0, s390_r13, 4);
3257                         }
3258                 }
3259                         break;
3260                 case OP_LSHL: {
3261                         CHECK_SRCDST_NCOM;
3262                         s390_sllg (code, ins->dreg, ins->dreg, src2, 0);
3263                 }
3264                         break;
3265                 case OP_SHL_IMM:
3266                 case OP_LSHL_IMM: {
3267                         if (ins->sreg1 != ins->dreg) {
3268                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3269                         }
3270                         s390_sllg (code, ins->dreg, ins->dreg, 0, (ins->inst_imm & 0x3f));
3271                 }
3272                         break;
3273                 case OP_LSHR: {
3274                         CHECK_SRCDST_NCOM;
3275                         s390_srag  (code, ins->dreg, ins->dreg, src2, 0);
3276                 }
3277                         break;
3278                 case OP_SHR_IMM:
3279                 case OP_LSHR_IMM: {
3280                         if (ins->sreg1 != ins->dreg) {
3281                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3282                         }
3283                         s390_srag  (code, ins->dreg, ins->dreg, 0, (ins->inst_imm & 0x3f));
3284                 }
3285                         break;
3286                 case OP_SHR_UN_IMM:
3287                 case OP_LSHR_UN_IMM: {
3288                         if (ins->sreg1 != ins->dreg) {
3289                                 s390_lgr   (code, ins->dreg, ins->sreg1);
3290                         }
3291                         s390_srlg (code, ins->dreg, ins->dreg, 0, (ins->inst_imm & 0x3f));
3292                 }
3293                         break;
3294                 case OP_LSHR_UN: {
3295                         CHECK_SRCDST_NCOM;
3296                         s390_srlg (code, ins->dreg, ins->dreg, src2, 0);
3297                 }
3298                         break;
3299                 case OP_LNOT: {
3300                         if (ins->sreg1 != ins->dreg) {
3301                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3302                         }
3303                         s390_lghi (code, s390_r0, -1);
3304                         s390_xgr  (code, ins->dreg, s390_r0);
3305                 }
3306                         break;
3307                 case OP_LNEG: {
3308                         s390_lcgr (code, ins->dreg, ins->sreg1);
3309                 }
3310                         break;
3311                 case OP_LMUL: {
3312                         CHECK_SRCDST_COM;
3313                         s390_msgr (code, ins->dreg, src2);
3314                 }
3315                         break;
3316                 case OP_MUL_IMM:
3317                 case OP_LMUL_IMM: {
3318                         if (ins->dreg != ins->sreg1) {
3319                                 s390_lgr  (code, ins->dreg, ins->sreg1);
3320                         }
3321                         if (s390_is_imm16 (ins->inst_imm)) {
3322                                 s390_lghi (code, s390_r13, ins->inst_imm);
3323                         } else {
3324                                 s390_basr (code, s390_r13, 0);
3325                                 s390_j    (code, 6);
3326                                 s390_llong(code, ins->inst_imm);
3327                                 s390_lg   (code, s390_r13, 0, s390_r13, 4);
3328                         }
3329                         s390_msgr (code, ins->dreg, s390_r13);
3330                 }
3331                         break;
3332                 case OP_LMUL_OVF: {
3333                         short int *o[2];
3334                         s390_ltgr (code, s390_r1, ins->sreg1);
3335                         s390_jz   (code, 0); CODEPTR(code, o[0]);
3336                         s390_ltgr (code, s390_r0, ins->sreg2);
3337                         s390_jnz  (code, 6);
3338                         s390_lghi (code, s390_r1, 0);
3339                         s390_j    (code, 0); CODEPTR(code, o[1]);
3340                         s390_xgr  (code, s390_r0, s390_r1);
3341                         s390_msgr (code, s390_r1, ins->sreg2);
3342                         s390_xgr  (code, s390_r0, s390_r1);
3343                         s390_srlg (code, s390_r0, s390_r0, 0, 63);
3344                         s390_ltgr (code, s390_r0, s390_r0);
3345                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3346                         PTRSLOT   (code, o[0]);
3347                         PTRSLOT   (code, o[1]);
3348                         s390_lgr  (code, ins->dreg, s390_r1);
3349                 }
3350                         break;
3351                 case OP_LMUL_OVF_UN: {
3352                         s390_lghi  (code, s390_r0, 0);
3353                         s390_lgr   (code, s390_r1, ins->sreg1);
3354                         s390_mlgr  (code, s390_r0, ins->sreg2);
3355                         s390_ltgr  (code, s390_r0, s390_r0);
3356                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3357                         s390_lgr   (code, ins->dreg, s390_r1);
3358                 }
3359                         break;
3360                 case OP_IADDCC: {
3361                         g_assert_not_reached ();
3362                         CHECK_SRCDST_COM_I;
3363                         s390_algr (code, ins->dreg, src2);
3364                 }
3365                         break;
3366                 case OP_IADD: {
3367                         CHECK_SRCDST_COM_I;
3368                         s390_agr  (code, ins->dreg, src2);
3369                 }
3370                         break;
3371                 case OP_IADC: {
3372                         g_assert_not_reached ();
3373                         CHECK_SRCDST_COM_I;
3374                         s390_alcgr (code, ins->dreg, src2);
3375                 }
3376                         break;
3377                 case OP_IADD_IMM: {
3378                         if (ins->dreg != ins->sreg1) {
3379                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3380                         }
3381                         if (s390_is_imm16 (ins->inst_imm)) {
3382                                 s390_aghi(code, ins->dreg, ins->inst_imm);
3383                         } else {
3384                                 s390_basr (code, s390_r13, 0);
3385                                 s390_j    (code, 4);
3386                                 s390_word (code, ins->inst_imm);
3387                                 s390_agf  (code, ins->dreg, 0, s390_r13, 4);
3388                         }
3389                 }
3390                         break;
3391                 case OP_IADC_IMM: {
3392                         if (ins->dreg != ins->sreg1) {
3393                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3394                         }
3395                         if (s390_is_imm16 (ins->inst_imm)) {
3396                                 s390_lghi  (code, s390_r0, ins->inst_imm);
3397                                 s390_alcgr (code, ins->dreg, s390_r0);
3398                         } else {
3399                                 s390_basr  (code, s390_r13, 0);
3400                                 s390_j     (code, 4);
3401                                 s390_word  (code, ins->inst_imm);
3402                                 s390_lgf   (code, s390_r13, 0, s390_r13, 4);
3403                                 s390_alcgr (code, ins->dreg, s390_r13);
3404                         }
3405                 }
3406                         break;
3407                 case OP_LADD_OVF:
3408                 case OP_S390_LADD_OVF: {
3409                         CHECK_SRCDST_COM;
3410                         s390_agr    (code, ins->dreg, src2);
3411                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3412                 }
3413                         break;
3414                 case OP_LADD_OVF_UN:
3415                 case OP_S390_LADD_OVF_UN: {
3416                         CHECK_SRCDST_COM;
3417                         s390_algr  (code, ins->dreg, src2);
3418                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3419                 }
3420                         break;
3421                 case OP_ISUBCC: {
3422                         CHECK_SRCDST_NCOM_I;
3423                         s390_slgr (code, ins->dreg, src2);
3424                 }
3425                         break;
3426                 case OP_ISUB: {
3427                         CHECK_SRCDST_NCOM_I;
3428                         s390_sgr  (code, ins->dreg, src2);
3429                 }
3430                         break;
3431                 case OP_ISBB: {
3432                         CHECK_SRCDST_NCOM_I;
3433                         s390_slbgr (code, ins->dreg, src2);
3434                 }
3435                         break;
3436                 case OP_ISUB_IMM: {
3437                         if (ins->dreg != ins->sreg1) {
3438                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3439                         }
3440                         if (s390_is_imm16 (-ins->inst_imm)) {
3441                                 s390_aghi (code, ins->dreg, -ins->inst_imm);
3442                         } else {
3443                                 s390_basr (code, s390_r13, 0);
3444                                 s390_j    (code, 4);
3445                                 s390_word (code, ins->inst_imm);
3446                                 s390_sgf  (code, ins->dreg, 0, s390_r13, 4);
3447                         }
3448                 }
3449                         break;
3450                 case OP_ISBB_IMM: {
3451                         s390_basr (code, s390_r13, 0);
3452                         s390_j    (code, 4);
3453                         s390_word (code, ins->inst_imm);
3454                         s390_slgf (code, ins->dreg, 0, s390_r13, 4);
3455                 }
3456                         break;
3457                 case OP_ISUB_OVF:
3458                 case OP_S390_ISUB_OVF: {
3459                         CHECK_SRCDST_NCOM;
3460                         s390_sr   (code, ins->dreg, src2);
3461                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3462                         s390_lgfr (code, ins->dreg, ins->dreg);
3463                 }
3464                         break;
3465                 case OP_ISUB_OVF_UN:
3466                 case OP_S390_ISUB_OVF_UN: {
3467                         CHECK_SRCDST_NCOM;
3468                         s390_slr  (code, ins->dreg, src2);
3469                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3470                         s390_llgfr(code, ins->dreg, ins->dreg);
3471                 }
3472                         break;
3473                 case OP_LSUB_OVF:
3474                 case OP_S390_LSUB_OVF: {
3475                         CHECK_SRCDST_NCOM;
3476                         s390_sgr   (code, ins->dreg, src2);
3477                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3478                 }
3479                         break;
3480                 case OP_LSUB_OVF_UN:
3481                 case OP_S390_LSUB_OVF_UN: {
3482                         CHECK_SRCDST_NCOM;
3483                         s390_slgr  (code, ins->dreg, src2);
3484                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3485                 }
3486                         break;
3487                 case OP_IAND: {
3488                         CHECK_SRCDST_NCOM_I;
3489                         s390_ngr (code, ins->dreg, src2);
3490                 }
3491                         break;
3492                 case OP_IAND_IMM: {
3493                         if (ins->dreg != ins->sreg1) {
3494                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3495                         }
3496                         if (s390_is_imm16 (ins->inst_imm)) {
3497                                 s390_lghi (code, s390_r0, ins->inst_imm);
3498                                 s390_ngr  (code, ins->dreg, s390_r0);
3499                         } else {
3500                                 s390_basr (code, s390_r13, 0);
3501                                 s390_j    (code, 6);
3502                                 s390_llong(code, ins->inst_imm);
3503                                 s390_ng   (code, ins->dreg, 0, s390_r13, 4);
3504                         }
3505                 }
3506                         break;
3507                 case OP_IDIV: {
3508                         s390_lgfr (code, s390_r0, ins->sreg1);
3509                         s390_srda (code, s390_r0, 0, 32);
3510                         s390_dr   (code, s390_r0, ins->sreg2);
3511                         s390_lgfr (code, ins->dreg, s390_r1);
3512                 }
3513                         break;
3514                 case OP_IDIV_UN: {
3515                         s390_lgfr (code, s390_r0, ins->sreg1);
3516                         s390_srdl (code, s390_r0, 0, 32);
3517                         s390_dlr  (code, s390_r0, ins->sreg2);
3518                         s390_lgfr (code, ins->dreg, s390_r1);
3519                 }
3520                         break;
3521                 case OP_IDIV_IMM: {
3522                         if (s390_is_imm16 (ins->inst_imm)) {
3523                                 s390_lghi (code, s390_r13, ins->inst_imm);
3524                                 s390_lgfr (code, s390_r0, ins->sreg1);
3525                         } else {
3526                                 s390_basr (code, s390_r13, 0);
3527                                 s390_j    (code, 4);
3528                                 s390_word (code, ins->inst_imm);
3529                                 s390_lgfr (code, s390_r0, ins->sreg1);
3530                                 s390_lgf  (code, s390_r13, 0, s390_r13, 4);
3531                         }
3532                         s390_srda (code, s390_r0, 0, 32);
3533                         s390_dr   (code, s390_r0, ins->sreg2);
3534                         s390_lgfr (code, ins->dreg, s390_r1);
3535                 }
3536                         break;
3537                 case OP_IREM: {
3538                         s390_lgfr (code, s390_r0, ins->sreg1);
3539                         s390_srda (code, s390_r0, 0, 32);
3540                         s390_dr   (code, s390_r0, ins->sreg2);
3541                         s390_lgfr (code, ins->dreg, s390_r0);
3542                         break;
3543                 case OP_IREM_UN:
3544                         s390_lgfr (code, s390_r0, ins->sreg1);
3545                         s390_srdl (code, s390_r0, 0, 32);
3546                         s390_dlr  (code, s390_r0, ins->sreg2);
3547                         s390_lgfr (code, ins->dreg, s390_r0);
3548                 }
3549                         break;
3550                 case OP_IREM_IMM: {
3551                         if (s390_is_imm16 (ins->inst_imm)) {
3552                                 s390_lghi (code, s390_r13, ins->inst_imm);
3553                                 s390_lgfr (code, s390_r0, ins->sreg1);
3554                         } else {
3555                                 s390_basr (code, s390_r13, 0);
3556                                 s390_j    (code, 4);
3557                                 s390_word (code, ins->inst_imm);
3558                                 s390_lgfr (code, s390_r0, ins->sreg1);
3559                                 s390_lgf  (code, s390_r13, 0, s390_r13, 4);
3560                         }
3561                         s390_srda (code, s390_r0, 0, 32);
3562                         s390_dr   (code, s390_r0, ins->sreg2);
3563                         s390_lgfr (code, ins->dreg, s390_r0);
3564                 }
3565                         break;
3566                 case OP_IOR: {
3567                         CHECK_SRCDST_COM_I;
3568                         s390_ogr (code, ins->dreg, src2);
3569                 }
3570                         break;
3571                 case OP_IOR_IMM: {
3572                         if (ins->dreg != ins->sreg1) {
3573                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3574                         }
3575                         if (s390_is_imm16 (ins->inst_imm)) {
3576                                 s390_lghi (code, s390_r0, ins->inst_imm);
3577                                 s390_ogr  (code, ins->dreg, s390_r0);
3578                         } else {
3579                                 s390_basr (code, s390_r13, 0);
3580                                 s390_j    (code, 6);
3581                                 s390_llong(code, ins->inst_imm);
3582                                 s390_og   (code, ins->dreg, 0, s390_r13, 4);
3583                         }
3584                 }
3585                         break;
3586                 case OP_IXOR: {
3587                         CHECK_SRCDST_COM_I;
3588                         s390_xgr (code, ins->dreg, src2);
3589                 }
3590                         break;
3591                 case OP_IXOR_IMM: {
3592                         if (ins->dreg != ins->sreg1) {
3593                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3594                         }
3595                         if (s390_is_imm16 (ins->inst_imm)) {
3596                                 s390_lghi (code, s390_r0, ins->inst_imm);
3597                                 s390_xgr  (code, ins->dreg, s390_r0);
3598                         } else {
3599                                 s390_basr (code, s390_r13, 0);
3600                                 s390_j    (code, 6);
3601                                 s390_llong(code, ins->inst_imm);
3602                                 s390_xg   (code, ins->dreg, 0, s390_r13, 4);
3603                         }
3604                 }
3605                         break;
3606                 case OP_ISHL: {
3607                         CHECK_SRCDST_NCOM;
3608                         s390_sll  (code, ins->dreg, src2, 0);
3609                 }
3610                         break;
3611                 case OP_ISHL_IMM: {
3612                         if (ins->sreg1 != ins->dreg) {
3613                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3614                         }
3615                         s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3616                 }
3617                         break;
3618                 case OP_ISHR: {
3619                         CHECK_SRCDST_NCOM;
3620                         s390_sra (code, ins->dreg, src2, 0);
3621                 }
3622                         break;
3623                 case OP_ISHR_IMM: {
3624                         if (ins->sreg1 != ins->dreg) {
3625                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3626                         }
3627                         s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3628                 }
3629                         break;
3630                 case OP_ISHR_UN_IMM: {
3631                         if (ins->sreg1 != ins->dreg) {
3632                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3633                         }
3634                         s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3635                 }
3636                         break;
3637                 case OP_ISHR_UN: {
3638                         CHECK_SRCDST_NCOM;
3639                         s390_srl  (code, ins->dreg, src2, 0);
3640                 }
3641                         break;
3642                 case OP_INOT: {
3643                         if (ins->sreg1 != ins->dreg) {
3644                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3645                         }
3646                         s390_lghi (code, s390_r0, -1);
3647                         s390_xgr  (code, ins->dreg, s390_r0);
3648                 }
3649                         break;
3650                 case OP_INEG: {
3651                         s390_lcgr (code, ins->dreg, ins->sreg1);
3652                 }
3653                         break;
3654                 case OP_IMUL: {
3655                         CHECK_SRCDST_COM_I;
3656                         s390_msr (code, ins->dreg, src2);
3657                 }
3658                         break;
3659                 case OP_IMUL_IMM: {
3660                         if (ins->dreg != ins->sreg1) {
3661                                 s390_lgfr (code, ins->dreg, ins->sreg1);
3662                         }
3663                         if (s390_is_imm16 (ins->inst_imm)) {
3664                                 s390_lghi (code, s390_r13, ins->inst_imm);
3665                         } else {
3666                                 s390_basr (code, s390_r13, 0);
3667                                 s390_j    (code, 4);
3668                                 s390_word (code, ins->inst_imm);
3669                                 s390_lgf  (code, s390_r13, 0, s390_r13, 4);
3670                         }
3671                         s390_msr  (code, ins->dreg, s390_r13);
3672                 }
3673                         break;
3674                 case OP_IMUL_OVF: {
3675                         short int *o[2];
3676                         s390_ltr  (code, s390_r1, ins->sreg1);
3677                         s390_jz   (code, 0); CODEPTR(code, o[0]);
3678                         s390_ltr  (code, s390_r0, ins->sreg2);
3679                         s390_jnz  (code, 6);
3680                         s390_lhi  (code, s390_r1, 0);
3681                         s390_j    (code, 0); CODEPTR(code, o[1]);
3682                         s390_xr   (code, s390_r0, s390_r1);
3683                         s390_msr  (code, s390_r1, ins->sreg2);
3684                         s390_xr   (code, s390_r0, s390_r1);
3685                         s390_srl  (code, s390_r0, 0, 31);
3686                         s390_ltr  (code, s390_r0, s390_r0);
3687                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3688                         PTRSLOT   (code, o[0]);
3689                         PTRSLOT   (code, o[1]);
3690                         s390_lgfr (code, ins->dreg, s390_r1);
3691                 }
3692                         break;
3693                 case OP_IMUL_OVF_UN: {
3694                         s390_lhi  (code, s390_r0, 0);
3695                         s390_lr   (code, s390_r1, ins->sreg1);
3696                         s390_mlr  (code, s390_r0, ins->sreg2);
3697                         s390_ltr  (code, s390_r0, s390_r0);
3698                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3699                         s390_lgfr (code, ins->dreg, s390_r1);
3700                 }
3701                         break;
3702                 case OP_ICONST:
3703                 case OP_I8CONST: {
3704                         if (s390_is_imm16(ins->inst_c0)) {
3705                                 s390_lghi (code, ins->dreg, ins->inst_c0);
3706                         } else {
3707                                 s390_basr (code, s390_r13, 0);
3708                                 s390_j    (code, 6);
3709                                 s390_llong(code, ins->inst_c0);
3710                                 s390_lg   (code, ins->dreg, 0, s390_r13, 4);
3711                         }
3712                 }
3713                         break;
3714                 case OP_AOTCONST: {
3715                         s390_basr (code, s390_r13, 0);
3716                         s390_j    (code, 6);
3717                         mono_add_patch_info (cfg, code - cfg->native_code,
3718                                 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3719                         s390_llong(code, 0);
3720                         s390_lg   (code,ins->dreg, 0, s390_r13, 4);
3721                 }
3722                         break;
3723                 case OP_JUMP_TABLE: {
3724                         mono_add_patch_info (cfg, code - cfg->native_code,
3725                                 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3726                         s390_basr  (code, s390_r13, 0);
3727                         s390_j     (code, 6);
3728                         s390_llong (code, 0);
3729                         s390_lg    (code, ins->dreg, 0, s390_r13, 4);
3730                 }
3731                         break;
3732                 case OP_MOVE:
3733                         if (ins->dreg != ins->sreg1) {
3734                                 s390_lgr (code, ins->dreg, ins->sreg1);
3735                         }
3736                         break;
3737                 case OP_LCONV_TO_I:
3738                 case OP_LCONV_TO_I8:
3739                 case OP_SEXT_I4:
3740                         s390_lgfr (code, ins->dreg, ins->sreg1);
3741                         break;
3742                 case OP_LCONV_TO_I4:
3743                         s390_lgfr (code, ins->dreg, ins->sreg1);
3744                         break;
3745                 case OP_LCONV_TO_U:
3746                 case OP_LCONV_TO_U8:
3747                 case OP_LCONV_TO_U4:
3748                 case OP_ZEXT_I4:
3749                         s390_llgfr (code, ins->dreg, ins->sreg1);
3750                         break;
3751                 case OP_LCONV_TO_OVF_U4:
3752                         s390_basr (code, s390_r13, 0);
3753                         s390_j    (code, 6);
3754                         s390_llong(code, 4294967295);
3755                         s390_clg  (code, ins->sreg1, 0, s390_r13, 4);
3756                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, "OverflowException");
3757                         s390_ltgr (code, ins->sreg1, ins->sreg1);
3758                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, "OverflowException");
3759                         s390_llgfr(code, ins->dreg, ins->sreg1);
3760                         break;
3761                 case OP_LCONV_TO_OVF_I4_UN:
3762                         s390_basr (code, s390_r13, 0);
3763                         s390_j    (code, 6);
3764                         s390_llong(code, 2147483647);
3765                         s390_cg   (code, ins->sreg1, 0, s390_r13, 4);
3766                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, "OverflowException");
3767                         s390_ltgr (code, ins->sreg1, ins->sreg1);
3768                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, "OverflowException");
3769                         s390_lgfr (code, ins->dreg, ins->sreg1);
3770                         break;
3771                 case OP_FMOVE:
3772                 case OP_FCONV_TO_R4: {
3773                         if (ins->dreg != ins->sreg1) {
3774                                 s390_ldr   (code, ins->dreg, ins->sreg1);
3775                         }
3776                 }
3777                         break;
3778                 case OP_S390_SETF4RET: {
3779                         s390_ledbr (code, ins->dreg, ins->sreg1);
3780                 }
3781                         break;
3782                 case OP_JMP: {
3783                         if (cfg->method->save_lmf)
3784                                 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
3785
3786                         if (cfg->flags & MONO_CFG_HAS_TAIL) {
3787                                 code =  emit_load_volatile_arguments (code, cfg);
3788                         }
3789
3790                         code = backUpStackPtr(cfg, code);
3791                         s390_lg  (code, s390_r14, 0, STK_BASE, S390_RET_ADDR_OFFSET);
3792                         mono_add_patch_info (cfg, code - cfg->native_code,
3793                                              MONO_PATCH_INFO_METHOD_JUMP,
3794                                              ins->inst_p0);
3795                         s390_jcl (code, S390_CC_UN, 0);
3796                 }
3797                         break;
3798                 case OP_CHECK_THIS: {
3799                         /* ensure ins->sreg1 is not NULL */
3800                         s390_lg   (code, s390_r0, 0, ins->sreg1, 0);
3801                         s390_ltgr (code, s390_r0, s390_r0);
3802                 }
3803                         break;
3804                 case OP_ARGLIST: {
3805                         int offset = cfg->sig_cookie + cfg->stack_usage;
3806
3807                         if (s390_is_imm16 (offset))
3808                                 s390_lghi (code, s390_r0, offset);
3809                         else {
3810                                 s390_basr (code, s390_r13, 0);
3811                                 s390_j    (code, 6);
3812                                 s390_llong(code, offset);
3813                                 s390_lg   (code, s390_r0, 0, s390_r13, 0);
3814                         }
3815                         s390_agr  (code, s390_r0, cfg->frame_reg);
3816                         s390_stg  (code, s390_r0, 0, ins->sreg1, 0);
3817                 }
3818                         break;
3819                 case OP_FCALL: {
3820                         s390_basr (code, s390_r13, 0);
3821                         s390_j    (code, 6);
3822                         call = (MonoCallInst*)ins;
3823                         if (ins->flags & MONO_INST_HAS_METHOD)
3824                                 mono_add_patch_info (cfg, code-cfg->native_code,
3825                                                      MONO_PATCH_INFO_METHOD,
3826                                                      call->method);
3827                         else
3828                                 mono_add_patch_info (cfg, code-cfg->native_code,
3829                                                      MONO_PATCH_INFO_ABS,
3830                                                      call->fptr);
3831                         s390_llong(code, 0);
3832                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3833                         s390_basr (code, s390_r14, s390_r14);
3834                         if (call->signature->ret->type == MONO_TYPE_R4)
3835                                 s390_ldebr (code, s390_f0, s390_f0);
3836                 }
3837                         break;
3838                 case OP_LCALL:
3839                 case OP_VCALL:
3840                 case OP_VCALL2:
3841                 case OP_VOIDCALL:
3842                 case OP_CALL: {
3843                         s390_basr (code, s390_r13, 0);
3844                         s390_j    (code, 6);
3845                         call = (MonoCallInst*)ins;
3846                         if (ins->flags & MONO_INST_HAS_METHOD)
3847                                 mono_add_patch_info (cfg, code-cfg->native_code,
3848                                                      MONO_PATCH_INFO_METHOD,
3849                                                      call->method);
3850                         else
3851                                 mono_add_patch_info (cfg, code-cfg->native_code,
3852                                                      MONO_PATCH_INFO_ABS,
3853                                                      call->fptr);
3854                         s390_llong(code, 0);
3855                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3856                         s390_basr (code, s390_r14, s390_r14);
3857                 }
3858                         break;
3859                 case OP_FCALL_REG: {
3860                         call = (MonoCallInst*)ins;
3861                         s390_lgr  (code, s390_r1, ins->sreg1);
3862                         s390_basr (code, s390_r14, s390_r1);
3863                         if (call->signature->ret->type == MONO_TYPE_R4)
3864                                 s390_ldebr (code, s390_f0, s390_f0);
3865                 }
3866                         break;
3867                 case OP_LCALL_REG:
3868                 case OP_VCALL_REG:
3869                 case OP_VCALL2_REG:
3870                 case OP_VOIDCALL_REG:
3871                 case OP_CALL_REG: {
3872                         s390_lgr  (code, s390_r1, ins->sreg1);
3873                         s390_basr (code, s390_r14, s390_r1);
3874                 }
3875                         break;
3876                 case OP_FCALL_MEMBASE: {
3877                         call = (MonoCallInst*)ins;
3878                         s390_lg   (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3879                         s390_basr (code, s390_r14, s390_r1);
3880                         if (call->signature->ret->type == MONO_TYPE_R4)
3881                                 s390_ldebr (code, s390_f0, s390_f0);
3882                 }
3883                         break;
3884                 case OP_LCALL_MEMBASE:
3885                 case OP_VCALL_MEMBASE:
3886                 case OP_VCALL2_MEMBASE:
3887                 case OP_VOIDCALL_MEMBASE:
3888                 case OP_CALL_MEMBASE: {
3889                         s390_lg   (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3890                         s390_basr (code, s390_r14, s390_r1);
3891                 }
3892                         break;
3893                 case OP_LOCALLOC: {
3894                         int alloca_skip = S390_MINIMAL_STACK_SIZE + cfg->param_area;
3895                         int area_offset = S390_ALIGN(alloca_skip, S390_STACK_ALIGNMENT);
3896                         s390_lgr  (code, s390_r1, ins->sreg1);
3897                         if (ins->flags & MONO_INST_INIT)
3898                                 s390_lgr  (code, s390_r0, ins->sreg1);
3899                         s390_aghi (code, s390_r1, 14);
3900                         s390_srlg (code, s390_r1, s390_r1, 0, 3);
3901                         s390_sllg (code, s390_r1, s390_r1, 0, 3);
3902                         if (cfg->method->save_lmf) {
3903                                 /*----------------------------------*/
3904                                 /* we have to adjust lmf ebp value  */
3905                                 /*----------------------------------*/
3906                                 int lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
3907
3908                                 s390_lgr (code, s390_r13, cfg->frame_reg);
3909                                 if (s390_is_imm16(lmfOffset))
3910                                         s390_aghi (code, s390_r13, lmfOffset);
3911                                 else {
3912                                         s390_basr (code, s390_r14, 0);
3913                                         s390_j    (code, 4);
3914                                         s390_word (code, lmfOffset);
3915                                         s390_agf  (code, s390_r13, 0, s390_r14, 4);
3916                                 }
3917                                 s390_lgr (code, s390_r14, STK_BASE);
3918                                 s390_sgr (code, s390_r14, s390_r1);
3919                                 s390_stg (code, s390_r14, 0, s390_r13,
3920                                           G_STRUCT_OFFSET(MonoLMF, ebp));
3921                         }
3922                         s390_lg   (code, s390_r13, 0, STK_BASE, 0);
3923                         s390_sgr  (code, STK_BASE, s390_r1);
3924                         s390_stg  (code, s390_r13, 0, STK_BASE, 0);
3925                         s390_la   (code, ins->dreg, 0, STK_BASE, area_offset);
3926                         s390_srlg (code, ins->dreg, ins->dreg, 0, 3);
3927                         s390_sllg (code, ins->dreg, ins->dreg, 0, 3);
3928                         if (ins->flags & MONO_INST_INIT) {
3929                                 s390_lgr  (code, s390_r1, s390_r0);
3930                                 s390_lgr  (code, s390_r0, ins->dreg);
3931                                 s390_lgr  (code, s390_r14, s390_r12);
3932                                 s390_lghi (code, s390_r13, 0);
3933                                 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
3934                                 s390_jo   (code, -2);
3935                                 s390_lgr  (code, s390_r12, s390_r14);
3936                         }
3937                 }
3938                         break;
3939                 case OP_THROW: {
3940                         s390_lgr  (code, s390_r2, ins->sreg1);
3941                         s390_basr (code, s390_r13, 0);
3942                         s390_j    (code, 6);
3943                         mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3944                                              (gpointer) "mono_arch_throw_exception");
3945                         s390_llong(code, 0);
3946                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3947                         s390_basr (code, s390_r14, s390_r14);
3948                 }
3949                         break;
3950                 case OP_RETHROW: {
3951                         s390_lgr  (code, s390_r2, ins->sreg1);
3952                         s390_basr (code, s390_r13, 0);
3953                         s390_j    (code, 6);
3954                         mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3955                                              (gpointer) "mono_arch_rethrow_exception");
3956                         s390_llong(code, 0);
3957                         s390_lg   (code, s390_r14, 0, s390_r13, 4);
3958                         s390_basr (code, s390_r14, s390_r14);
3959                 }
3960                         break;
3961                 case OP_START_HANDLER: {
3962                         MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
3963
3964                         S390_LONG (code, stg, stg, s390_r14, 0,
3965                                    spvar->inst_basereg,
3966                                    spvar->inst_offset);
3967                 }
3968                         break;
3969                 case OP_ENDFILTER: {
3970                         MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
3971
3972                         if (ins->sreg1 != s390_r2)
3973                                 s390_lgr(code, s390_r2, ins->sreg1);
3974                         S390_LONG (code, lg, lg, s390_r14, 0,
3975                                    spvar->inst_basereg,
3976                                    spvar->inst_offset);
3977                         s390_br  (code, s390_r14);
3978                 }
3979                         break;
3980                 case OP_ENDFINALLY: {
3981                         MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
3982
3983                         S390_LONG (code, lg, lg, s390_r14, 0,
3984                                    spvar->inst_basereg,
3985                                    spvar->inst_offset);
3986                         s390_br  (code, s390_r14);
3987                 }
3988                         break;
3989                 case OP_CALL_HANDLER: {
3990                         mono_add_patch_info (cfg, code-cfg->native_code,
3991                                              MONO_PATCH_INFO_BB, ins->inst_target_bb);
3992                         s390_brasl (code, s390_r14, 0);
3993                 }
3994                         break;
3995                 case OP_LABEL: {
3996                         ins->inst_c0 = code - cfg->native_code;
3997                 }
3998                         break;
3999                 case OP_RELAXED_NOP:
4000                 case OP_NOP:
4001                 case OP_DUMMY_USE:
4002                 case OP_DUMMY_STORE:
4003                 case OP_NOT_REACHED:
4004                 case OP_NOT_NULL: {
4005                 }
4006                         break;
4007                 case OP_BR:
4008                         EMIT_UNCOND_BRANCH(ins);
4009                         break;
4010                 case OP_BR_REG: {
4011                         s390_br  (code, ins->sreg1);
4012                 }
4013                         break;
4014                 case OP_CEQ:
4015                 case OP_ICEQ:
4016                 case OP_LCEQ: {
4017                         s390_lghi(code, ins->dreg, 1);
4018                         s390_jz  (code, 4);
4019                         s390_lghi(code, ins->dreg, 0);
4020                 }
4021                         break;
4022                 case OP_CLT:
4023                 case OP_ICLT:
4024                 case OP_LCLT: {
4025                         s390_lghi(code, ins->dreg, 1);
4026                         s390_jl  (code, 4);
4027                         s390_lghi(code, ins->dreg, 0);
4028                 }
4029                         break;
4030                 case OP_CLT_UN:
4031                 case OP_ICLT_UN:
4032                 case OP_LCLT_UN: {
4033                         s390_lghi(code, ins->dreg, 1);
4034                         s390_jlo (code, 4);
4035                         s390_lghi(code, ins->dreg, 0);
4036                 }
4037                         break;
4038                 case OP_CGT:
4039                 case OP_ICGT:
4040                 case OP_LCGT: {
4041                         s390_lghi(code, ins->dreg, 1);
4042                         s390_jh  (code, 4);
4043                         s390_lghi(code, ins->dreg, 0);
4044                 }
4045                         break;
4046                 case OP_CGT_UN:
4047                 case OP_ICGT_UN:
4048                 case OP_LCGT_UN: {
4049                         s390_lghi(code, ins->dreg, 1);
4050                         s390_jho (code, 4);
4051                         s390_lghi(code, ins->dreg, 0);
4052                 }
4053                         break;
4054                 case OP_COND_EXC_EQ:
4055                 case OP_COND_EXC_IEQ:
4056                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
4057                         break;
4058                 case OP_COND_EXC_NE_UN:
4059                 case OP_COND_EXC_INE_UN:
4060                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
4061                         break;
4062                 case OP_COND_EXC_LT:
4063                 case OP_COND_EXC_ILT:
4064                 case OP_COND_EXC_LT_UN:
4065                 case OP_COND_EXC_ILT_UN:
4066                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
4067                         break;
4068                 case OP_COND_EXC_GT:
4069                 case OP_COND_EXC_IGT:
4070                 case OP_COND_EXC_GT_UN:
4071                 case OP_COND_EXC_IGT_UN:
4072                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
4073                         break;
4074                 case OP_COND_EXC_GE:
4075                 case OP_COND_EXC_IGE:
4076                 case OP_COND_EXC_GE_UN:
4077                 case OP_COND_EXC_IGE_UN:
4078                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
4079                         break;
4080                 case OP_COND_EXC_LE:
4081                 case OP_COND_EXC_ILE:
4082                 case OP_COND_EXC_LE_UN:
4083                 case OP_COND_EXC_ILE_UN:
4084                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
4085                         break;
4086                 case OP_COND_EXC_OV:
4087                 case OP_COND_EXC_IOV:
4088                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
4089                         break;
4090                 case OP_COND_EXC_NO:
4091                 case OP_COND_EXC_INO:
4092                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
4093                         break;
4094                 case OP_COND_EXC_C:
4095                 case OP_COND_EXC_IC:
4096                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
4097                         break;
4098                 case OP_COND_EXC_NC:
4099                 case OP_COND_EXC_INC:
4100                         EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
4101                         break;
4102                 case OP_LBEQ:
4103                 case OP_IBEQ:
4104                         EMIT_COND_BRANCH (ins, S390_CC_EQ);
4105                         break;
4106                 case OP_LBNE_UN:
4107                 case OP_IBNE_UN:
4108                         EMIT_COND_BRANCH (ins, S390_CC_NE);
4109                         break;
4110                 case OP_LBLT:
4111                 case OP_LBLT_UN:
4112                 case OP_IBLT:
4113                 case OP_IBLT_UN:
4114                         EMIT_COND_BRANCH (ins, S390_CC_LT);
4115                         break;
4116                 case OP_LBGT:
4117                 case OP_LBGT_UN:
4118                 case OP_IBGT:
4119                 case OP_IBGT_UN:
4120                         EMIT_COND_BRANCH (ins, S390_CC_GT);
4121                         break;
4122                 case OP_LBGE:
4123                 case OP_LBGE_UN:
4124                 case OP_IBGE:
4125                 case OP_IBGE_UN:
4126                         EMIT_COND_BRANCH (ins, S390_CC_GE);
4127                         break;
4128                 case OP_LBLE:
4129                 case OP_LBLE_UN:
4130                 case OP_IBLE:
4131                 case OP_IBLE_UN:
4132                         EMIT_COND_BRANCH (ins, S390_CC_LE);
4133                         break;
4134
4135                 /* floating point opcodes */
4136                 case OP_R8CONST: {
4137                         if (*((float *) ins->inst_p0) == 0) {
4138                                 s390_lzdr (code, ins->dreg);
4139                         } else {
4140                                 s390_basr  (code, s390_r13, 0);
4141                                 s390_j     (code, 6);
4142                                 s390_llong (code, ins->inst_p0);
4143                                 s390_lg    (code, s390_r13, 0, s390_r13, 4);
4144                                 s390_ld    (code, ins->dreg, 0, s390_r13, 0);
4145                         }
4146                 }
4147                         break;
4148                 case OP_R4CONST: {
4149                         if (*((float *) ins->inst_p0) == 0) {
4150                                 s390_lzdr (code, ins->dreg);
4151                         } else {
4152                                 s390_basr (code, s390_r13, 0);
4153                                 s390_j    (code, 6);
4154                                 s390_llong(code, ins->inst_p0);
4155                                 s390_lg   (code, s390_r13, 0, s390_r13, 4);
4156                                 s390_ldeb (code, ins->dreg, 0, s390_r13, 0);
4157                         }
4158                 }
4159                         break;
4160                 case OP_STORER8_MEMBASE_REG: {
4161                         S390_LONG (code, stdy, std, ins->sreg1, 0,
4162                                    ins->inst_destbasereg, ins->inst_offset);
4163                 }
4164                         break;
4165                 case OP_LOADR8_MEMBASE: {
4166                         S390_LONG (code, ldy, ld, ins->dreg, 0,
4167                                    ins->inst_basereg, ins->inst_offset);
4168                 }
4169                         break;
4170                 case OP_STORER4_MEMBASE_REG: {
4171                         s390_ledbr (code, s390_f15, ins->sreg1);
4172                         S390_LONG (code, stey, ste, s390_f15, 0,
4173                                    ins->inst_destbasereg, ins->inst_offset);
4174                 }
4175                         break;
4176                 case OP_LOADR4_MEMBASE: {
4177                         S390_LONG (code, ldy, ld, s390_f15, 0,
4178                                    ins->inst_basereg, ins->inst_offset);
4179                         s390_ldebr (code, ins->dreg, s390_f15);
4180                 }
4181                         break;
4182                 case OP_ICONV_TO_R_UN: {
4183                         s390_cdfbr (code, ins->dreg, ins->sreg1);
4184                         s390_ltr   (code, ins->sreg1, ins->sreg1);
4185                         s390_jnl   (code, 12);
4186                         s390_basr  (code, s390_r13, 0);
4187                         s390_j     (code, 6);
4188                         s390_word  (code, 0x41f00000);
4189                         s390_word  (code, 0);
4190                         s390_adb   (code, ins->dreg, 0, s390_r13, 4);
4191                 }
4192                         break;
4193                 case OP_LCONV_TO_R_UN: {
4194                         s390_cdgbr (code, ins->dreg, ins->sreg1);
4195                         s390_ltgr  (code, ins->sreg1, ins->sreg1);
4196                         s390_jnl   (code, 12);
4197                         s390_basr  (code, s390_r13, 0);
4198                         s390_j     (code, 6);
4199                         s390_word  (code, 0x41f00000);
4200                         s390_word  (code, 0);
4201                         s390_adb   (code, ins->dreg, 0, s390_r13, 4);
4202                 }
4203                         break;
4204                 case OP_LCONV_TO_R4:
4205                 case OP_ICONV_TO_R4: {
4206                         s390_cdgbr (code, ins->dreg, ins->sreg1);
4207                 }
4208                         break;
4209                 case OP_LCONV_TO_R8:
4210                 case OP_ICONV_TO_R8: {
4211                         s390_cdgbr (code, ins->dreg, ins->sreg1);
4212                 }
4213                         break;
4214                 case OP_FCONV_TO_I1:
4215                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
4216                         break;
4217                 case OP_FCONV_TO_U1:
4218                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
4219                         break;
4220                 case OP_FCONV_TO_I2:
4221                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
4222                         break;
4223                 case OP_FCONV_TO_U2:
4224                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
4225                         break;
4226                 case OP_FCONV_TO_I4:
4227                 case OP_FCONV_TO_I:
4228                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
4229                         break;
4230                 case OP_FCONV_TO_U4:
4231                 case OP_FCONV_TO_U:
4232                         code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
4233                         break;
4234                 case OP_FCONV_TO_I8:
4235                         s390_cgdbr (code, ins->dreg, 5, ins->sreg1);
4236                         break;
4237                 case OP_LCONV_TO_OVF_I: {
4238                         /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
4239                         short int *o[5];
4240                         s390_ltgr (code, ins->sreg2, ins->sreg2);
4241                         s390_jnl  (code, 0); CODEPTR(code, o[0]);
4242                         s390_ltgr (code, ins->sreg1, ins->sreg1);
4243                         s390_jnl  (code, 0); CODEPTR(code, o[1]);
4244                         s390_lhi  (code, s390_r13, -1);
4245                         s390_cgr  (code, ins->sreg1, s390_r13);
4246                         s390_jnz  (code, 0); CODEPTR(code, o[2]);
4247                         if (ins->dreg != ins->sreg2)
4248                                 s390_lgr  (code, ins->dreg, ins->sreg2);
4249                         s390_j    (code, 0); CODEPTR(code, o[3]);
4250                         PTRSLOT(code, o[0]);
4251                         s390_jz   (code, 0); CODEPTR(code, o[4]);
4252                         PTRSLOT(code, o[1]);
4253                         PTRSLOT(code, o[2]);
4254                         mono_add_patch_info (cfg, code - cfg->native_code,
4255                                              MONO_PATCH_INFO_EXC, "OverflowException");
4256                         s390_brasl (code, s390_r14, 0);
4257                         PTRSLOT(code, o[3]);
4258                         PTRSLOT(code, o[4]);
4259                 }
4260                         break;
4261                 case OP_ABS: {
4262                         s390_lpdbr (code, ins->dreg, ins->sreg1);
4263                 }
4264                         break;
4265                 case OP_SQRT: {
4266                         s390_sqdbr (code, ins->dreg, ins->sreg1);
4267                 }
4268                         break;
4269                 case OP_FADD: {
4270                         CHECK_SRCDST_COM_F;
4271                         s390_adbr (code, ins->dreg, src2);
4272                 }
4273                         break;
4274                 case OP_FSUB: {
4275                         CHECK_SRCDST_NCOM_F;
4276                         s390_sdbr (code, ins->dreg, src2);
4277                 }
4278                         break;
4279                 case OP_FMUL: {
4280                         CHECK_SRCDST_COM_F;
4281                         s390_mdbr (code, ins->dreg, src2);
4282                 }
4283                         break;
4284                 case OP_FDIV: {
4285                         CHECK_SRCDST_NCOM_F;
4286                         s390_ddbr (code, ins->dreg, src2);
4287                 }
4288                         break;
4289                 case OP_FNEG: {
4290                         s390_lcdbr (code, ins->dreg, ins->sreg1);
4291                 }
4292                         break;
4293                 case OP_FREM: {
4294                         CHECK_SRCDST_NCOM_F;
4295                         s390_didbr (code, ins->dreg, src2, 5, s390_f15);
4296                 }
4297                         break;
4298                 case OP_FCOMPARE: {
4299                         s390_cdbr (code, ins->sreg1, ins->sreg2);
4300                 }
4301                         break;
4302                 case OP_FCEQ: {
4303                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4304                         s390_lghi  (code, ins->dreg, 1);
4305                         s390_je    (code, 4);
4306                         s390_lghi  (code, ins->dreg, 0);
4307                 }
4308                         break;
4309                 case OP_FCLT: {
4310                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4311                         s390_lghi  (code, ins->dreg, 1);
4312                         s390_jl    (code, 4);
4313                         s390_lghi  (code, ins->dreg, 0);
4314                 }
4315                         break;
4316                 case OP_FCLT_UN: {
4317                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4318                         s390_lghi  (code, ins->dreg, 1);
4319                         s390_jlo   (code, 4);
4320                         s390_lghi  (code, ins->dreg, 0);
4321                 }
4322                         break;
4323                 case OP_FCGT: {
4324                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4325                         s390_lghi  (code, ins->dreg, 1);
4326                         s390_jh    (code, 4);
4327                         s390_lghi  (code, ins->dreg, 0);
4328                 }
4329                         break;
4330                 case OP_FCGT_UN: {
4331                         s390_cdbr  (code, ins->sreg1, ins->sreg2);
4332                         s390_lghi  (code, ins->dreg, 1);
4333                         s390_jho   (code, 4);
4334                         s390_lghi  (code, ins->dreg, 0);
4335                 }
4336                         break;
4337                 case OP_FBEQ: {
4338                         short *o;
4339                         s390_jo (code, 0); CODEPTR(code, o);
4340                         EMIT_COND_BRANCH (ins, S390_CC_EQ);
4341                         PTRSLOT (code, o);
4342                 }
4343                         break;
4344                 case OP_FBNE_UN:
4345                         EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
4346                         break;
4347                 case OP_FBLT: {
4348                         short *o;
4349                         s390_jo (code, 0); CODEPTR(code, o);
4350                         EMIT_COND_BRANCH (ins, S390_CC_LT);
4351                         PTRSLOT (code, o);
4352                 }
4353                         break;
4354                 case OP_FBLT_UN:
4355                         EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
4356                         break;
4357                 case OP_FBGT: {
4358                         short *o;
4359                         s390_jo (code, 0); CODEPTR(code, o);
4360                         EMIT_COND_BRANCH (ins, S390_CC_GT);
4361                         PTRSLOT (code, o);
4362                 }
4363                         break;
4364                 case OP_FBGT_UN:
4365                         EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
4366                         break;
4367                 case OP_FBGE: {
4368                         short *o;
4369                         s390_jo (code, 0); CODEPTR(code, o);
4370                         EMIT_COND_BRANCH (ins, S390_CC_GE);
4371                         PTRSLOT (code, o);
4372                 }
4373                         break;
4374                 case OP_FBGE_UN:
4375                         EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
4376                         break;
4377                 case OP_FBLE: {
4378                         short *o;
4379                         s390_jo (code, 0); CODEPTR(code, o);
4380                         EMIT_COND_BRANCH (ins, S390_CC_LE);
4381                         PTRSLOT (code, o);
4382                 }
4383                         break;
4384                 case OP_FBLE_UN:
4385                         EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
4386                         break;
4387                 case OP_CKFINITE: {
4388                         short *o;
4389                         s390_lhi  (code, s390_r13, 0x7f);
4390                         s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
4391                         s390_jz   (code, 0); CODEPTR(code, o);
4392                         mono_add_patch_info (cfg, code - cfg->native_code,
4393                                              MONO_PATCH_INFO_EXC, "ArithmeticException");
4394                         s390_brasl (code, s390_r14,0);
4395                         PTRSLOT(code, o);
4396                 }
4397                         break;
4398                 case OP_S390_MOVE: {
4399                         if (ins->backend.size > 0) {
4400                                 if (ins->backend.size <= 256) {
4401                                         s390_mvc  (code, ins->backend.size, ins->dreg,
4402                                                    ins->inst_offset, ins->sreg1, ins->inst_imm);
4403                                 } else {
4404                                         s390_lgr  (code, s390_r0, ins->dreg);
4405                                         if (s390_is_imm16 (ins->inst_offset)) {
4406                                                 s390_aghi (code, s390_r0, ins->inst_offset);
4407                                         } else {
4408                                                 s390_basr (code, s390_r13, 0);
4409                                                 s390_j    (code, 6);
4410                                                 s390_llong(code, ins->inst_offset);
4411                                                 s390_a    (code, s390_r0, 0, s390_r13, 4);
4412                                         }
4413                                         s390_lgr  (code, s390_r12, ins->sreg1);
4414                                         if (s390_is_imm16 (ins->inst_imm)) {
4415                                                 s390_aghi (code, s390_r12, ins->inst_imm);
4416                                         } else {
4417                                                 s390_basr (code, s390_r13, 0);
4418                                                 s390_j    (code, 6);
4419                                                 s390_llong(code, ins->inst_imm);
4420                                                 s390_ag   (code, s390_r12, 0, s390_r13, 4);
4421                                         }
4422                                         s390_lgr  (code, s390_r1, ins->sreg1);
4423                                         s390_lgr  (code, s390_r13, s390_r1);
4424                                         s390_mvcle(code, s390_r0, s390_r12, 0, 0);
4425                                         s390_jo   (code, -2);
4426                                 }
4427                         }
4428                 }
4429                         break;
4430                 case OP_ATOMIC_ADD_I8: {
4431                         s390_lgr (code, s390_r1, ins->sreg2);
4432                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4433                         s390_agr (code, s390_r1, s390_r0);
4434                         s390_csg (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4435                         s390_jnz (code, -10);
4436                         s390_lgr (code, ins->dreg, s390_r1);
4437                 }
4438                         break;
4439                 case OP_ATOMIC_ADD_NEW_I8: {
4440                         s390_lgr (code, s390_r1, ins->sreg2);
4441                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4442                         s390_agr (code, s390_r1, s390_r0);
4443                         s390_csg (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4444                         s390_jnz (code, -10);
4445                         s390_lgr (code, ins->dreg, s390_r1);
4446                 }
4447                         break;
4448                 case OP_ATOMIC_EXCHANGE_I8: {
4449                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4450                         s390_csg (code, s390_r0, ins->sreg2, ins->inst_basereg, ins->inst_offset);
4451                         s390_jnz (code, -6);
4452                         s390_lgr (code, ins->dreg, s390_r0);
4453                 }
4454                         break;
4455                 case OP_ATOMIC_ADD_I4: {
4456                         s390_lgfr(code, s390_r1, ins->sreg2);
4457                         s390_lgf (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4458                         s390_agr (code, s390_r1, s390_r0);
4459                         s390_cs  (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4460                         s390_jnz (code, -9);
4461                         s390_lgfr(code, ins->dreg, s390_r1);
4462                 }
4463                         break;
4464                 case OP_ATOMIC_ADD_NEW_I4: {
4465                         s390_lgfr(code, s390_r1, ins->sreg2);
4466                         s390_lgf (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4467                         s390_agr (code, s390_r1, s390_r0);
4468                         s390_cs  (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4469                         s390_jnz (code, -9);
4470                         s390_lgfr(code, ins->dreg, s390_r1);
4471                 }
4472                         break;
4473                 case OP_ATOMIC_EXCHANGE_I4: {
4474                         s390_lg  (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4475                         s390_cs  (code, s390_r0, ins->sreg2, ins->inst_basereg, ins->inst_offset);
4476                         s390_jnz (code, -4);
4477                         s390_lgfr(code, ins->dreg, s390_r0);
4478                 }
4479                         break;
4480                 case OP_S390_BKCHAIN: {
4481                         s390_lgr  (code, ins->dreg, ins->sreg1);
4482                         if (s390_is_imm16 (cfg->stack_offset)) {
4483                                 s390_aghi (code, ins->dreg, cfg->stack_offset);
4484                         } else {
4485                                 s390_basr (code, s390_r13, 0);
4486                                 s390_j    (code, 6);
4487                                 s390_llong(code, cfg->stack_offset);
4488                                 s390_ag   (code, ins->dreg, 0, s390_r13, 4);
4489                         }
4490                 }
4491                         break;
4492                 case OP_MEMORY_BARRIER: {
4493                 }
4494                         break;
4495                 default:
4496                         g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4497                         g_assert_not_reached ();
4498                 }
4499
4500                 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4501                         g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %ld)",
4502                                    mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4503                         g_assert_not_reached ();
4504                 }
4505
4506                 cpos += max_len;
4507
4508                 last_offset = offset;
4509         }
4510
4511         cfg->code_len = code - cfg->native_code;
4512 }
4513
4514 /*========================= End of Function ========================*/
4515
4516 /*------------------------------------------------------------------*/
4517 /*                                                                  */
4518 /* Name         - mono_arch_register_lowlevel_calls                 */
4519 /*                                                                  */
4520 /* Function     - Register routines to help with --trace operation. */
4521 /*                                                                  */
4522 /*------------------------------------------------------------------*/
4523
4524 void
4525 mono_arch_register_lowlevel_calls (void)
4526 {
4527         mono_register_jit_icall (mono_arch_get_lmf_addr, "mono_arch_get_lmf_addr", NULL, TRUE);
4528 }
4529
4530 /*========================= End of Function ========================*/
4531
4532 /*------------------------------------------------------------------*/
4533 /*                                                                  */
4534 /* Name         - mono_arch_patch_code                              */
4535 /*                                                                  */
4536 /* Function     - Process the patch data created during the         */
4537 /*                instruction build process. This resolves jumps,   */
4538 /*                calls, variables etc.                             */
4539 /*                                                                  */
4540 /*------------------------------------------------------------------*/
4541
4542 void
4543 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain,
4544                       guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4545 {
4546         MonoJumpInfo *patch_info;
4547
4548         for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4549                 unsigned char *ip = patch_info->ip.i + code;
4550                 gconstpointer target = NULL;
4551
4552                 target = mono_resolve_patch_target (method, domain, code,
4553                                                     patch_info, run_cctors);
4554
4555                 switch (patch_info->type) {
4556                         case MONO_PATCH_INFO_IP:
4557                         case MONO_PATCH_INFO_EXC_NAME:
4558                         case MONO_PATCH_INFO_LDSTR:
4559                         case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
4560                         case MONO_PATCH_INFO_LDTOKEN:
4561                         case MONO_PATCH_INFO_EXC:
4562                         case MONO_PATCH_INFO_ABS:
4563                         case MONO_PATCH_INFO_METHOD:
4564                         case MONO_PATCH_INFO_INTERNAL_METHOD:
4565                         case MONO_PATCH_INFO_CLASS_INIT:
4566                                 s390_patch_addr (ip, (guint64) target);
4567                                 continue;
4568                         case MONO_PATCH_INFO_SWITCH:
4569                                 /*----------------------------------*/
4570                                 /* ip points at the basr r13,0/j +4 */
4571                                 /* instruction the vtable value     */
4572                                 /* follows this (i.e. ip+6)         */
4573                                 /*----------------------------------*/
4574                                 *((gconstpointer *)(ip+6)) = target;
4575                                 continue;
4576                         case MONO_PATCH_INFO_METHODCONST:
4577                         case MONO_PATCH_INFO_CLASS:
4578                         case MONO_PATCH_INFO_IMAGE:
4579                         case MONO_PATCH_INFO_FIELD:
4580                         case MONO_PATCH_INFO_IID:
4581                                 target = S390_RELATIVE(target, ip);
4582                                 s390_patch_rel (ip, (guint64) target);
4583                                 continue;
4584                         case MONO_PATCH_INFO_R4:
4585                         case MONO_PATCH_INFO_R8:
4586                         case MONO_PATCH_INFO_METHOD_REL:
4587                                 g_assert_not_reached ();
4588                                 continue;
4589                         default:
4590                                 target = S390_RELATIVE(target, ip);
4591                                 ip += 2;
4592                                 s390_patch_rel (ip, (guint64) target);
4593                 }
4594         }
4595 }
4596
4597 /*========================= End of Function ========================*/
4598
4599 /*------------------------------------------------------------------*/
4600 /*                                                                  */
4601 /* Name         - emit_load_volatile_arguments                      */
4602 /*                                                                  */
4603 /* Function     - Emit the instructions to reload parameter regist- */
4604 /*                registers for use with "tail" operations.         */
4605 /*                                                                  */
4606 /*                The register loading operations performed here    */
4607 /*                are the mirror of the store operations performed  */
4608 /*                in mono_arch_emit_prolog and need to be kept in   */
4609 /*                synchronization with it.                          */
4610 /*                                                                  */
4611 /*------------------------------------------------------------------*/
4612
4613 guint8 *
4614 emit_load_volatile_arguments (guint8 *code, MonoCompile *cfg)
4615 {
4616         MonoInst *inst;
4617         MonoMethod *method = cfg->method;
4618         MonoMethodSignature *sig = mono_method_signature(method);
4619         int pos = 0, i;
4620         CallInfo *cinfo;
4621
4622         cinfo = get_call_info (NULL, NULL, sig, sig->pinvoke);
4623
4624         if (cinfo->struct_ret) {
4625                 ArgInfo *ainfo = &cinfo->ret;
4626                 inst         = cfg->vret_addr;
4627                 s390_lg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4628         }
4629
4630         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4631                 ArgInfo *ainfo = cinfo->args + i;
4632                 inst = cfg->args [pos];
4633
4634                 if (inst->opcode == OP_REGVAR) {
4635                         if (ainfo->regtype == RegTypeGeneral)
4636                                 s390_lgr (code, ainfo->reg, inst->dreg);
4637                         else if (ainfo->regtype == RegTypeFP) {
4638                                 if (inst->dreg != ainfo->reg) {
4639                                         if (ainfo->size == 4) {
4640                                                 s390_ldebr (code, ainfo->reg, inst->dreg);
4641                                         } else {
4642                                                 s390_ldr   (code, ainfo->reg, inst->dreg);
4643                                         }
4644                                 }
4645                         }
4646                         else if (ainfo->regtype == RegTypeBase) {
4647                         } else
4648                                 g_assert_not_reached ();
4649                 } else {
4650                         if (ainfo->regtype == RegTypeGeneral) {
4651                                 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4652                                         g_assert_not_reached();
4653                                 switch (ainfo->size) {
4654                                 case 1:
4655                                         s390_llgc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4656                                         break;
4657                                 case 2:
4658                                         s390_lgh  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4659                                         break;
4660                                 case 4:
4661                                         s390_lgf (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4662                                         break;
4663                                 case 8:
4664                                         s390_lg  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4665                                         break;
4666                                 }
4667                         } else if (ainfo->regtype == RegTypeBase) {
4668                         } else if (ainfo->regtype == RegTypeFP) {
4669                                 if (ainfo->size == 8)
4670                                         s390_ld  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4671                                 else if (ainfo->size == 4)
4672                                         s390_le  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4673                                 else
4674                                         g_assert_not_reached ();
4675                         } else if (ainfo->regtype == RegTypeStructByVal) {
4676                                 if (ainfo->reg != STK_BASE) {
4677                                         switch (ainfo->size) {
4678                                         case 1:
4679                                                 s390_llgc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4680                                                 break;
4681                                         case 2:
4682                                                 s390_lgh (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4683                                                 break;
4684                                         case 4:
4685                                                 s390_lgf (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4686                                                 break;
4687                                         case 8:
4688                                                 s390_lg  (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4689                                                 break;
4690                                         }
4691                                 }
4692                         } else if (ainfo->regtype == RegTypeStructByAddr) {
4693                                 if (ainfo->reg != STK_BASE) {
4694                                         s390_lg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4695                                 }
4696                         } else
4697                                 g_assert_not_reached ();
4698                 }
4699                 pos++;
4700         }
4701
4702         return code;
4703 }
4704
4705 /*========================= End of Function ========================*/
4706
4707 /*------------------------------------------------------------------*/
4708 /*                                                                  */
4709 /* Name         - mono_arch_emit_prolog                             */
4710 /*                                                                  */
4711 /* Function     - Create the instruction sequence for a function    */
4712 /*                prolog.                                           */
4713 /*                                                                  */
4714 /*------------------------------------------------------------------*/
4715
4716 guint8 *
4717 mono_arch_emit_prolog (MonoCompile *cfg)
4718 {
4719         MonoMethod *method = cfg->method;
4720         MonoBasicBlock *bb;
4721         MonoMethodSignature *sig;
4722         MonoInst *inst;
4723         int alloc_size, pos, max_offset, i;
4724         guint8 *code;
4725         CallInfo *cinfo;
4726         int tracing = 0;
4727         int lmfOffset;
4728
4729         cfg->code_size   = 512;
4730
4731         if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
4732                 tracing         = 1;
4733                 cfg->code_size += 256;
4734         }
4735
4736         if (method->save_lmf)
4737                 cfg->code_size += 200;
4738
4739         cfg->native_code = code = g_malloc (cfg->code_size);
4740
4741         s390_stmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4742
4743         if (cfg->arch.bkchain_reg != -1)
4744                 s390_lgr (code, cfg->arch.bkchain_reg, STK_BASE);
4745
4746         if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4747                 cfg->used_int_regs |= 1 << 11;
4748         }
4749
4750         alloc_size = cfg->stack_offset;
4751
4752         cfg->stack_usage = alloc_size;
4753         s390_lgr  (code, s390_r11, STK_BASE);
4754         if (s390_is_imm16 (alloc_size)) {
4755                 s390_aghi (code, STK_BASE, -alloc_size);
4756         } else {
4757                 int stackSize = alloc_size;
4758                 while (stackSize > 32767) {
4759                         s390_aghi (code, STK_BASE, -32767);
4760                         stackSize -= 32767;
4761                 }
4762                 s390_aghi (code, STK_BASE, -stackSize);
4763         }
4764         s390_stg  (code, s390_r11, 0, STK_BASE, 0);
4765
4766         if (cfg->frame_reg != STK_BASE)
4767                 s390_lgr (code, s390_r11, STK_BASE);
4768
4769         /* compute max_offset in order to use short forward jumps
4770          * we always do it on s390 because the immediate displacement
4771          * for jumps is too small
4772          */
4773         max_offset = 0;
4774         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4775                 MonoInst *ins;
4776                 bb->max_offset = max_offset;
4777
4778                 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4779                         max_offset += 6;
4780
4781                 MONO_BB_FOR_EACH_INS (bb, ins)
4782                         max_offset += ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
4783         }
4784
4785         /* load arguments allocated to register from the stack */
4786         sig = mono_method_signature (method);
4787         pos = 0;
4788
4789         cinfo = get_call_info (cfg, cfg->mempool, sig, sig->pinvoke);
4790
4791         if (cinfo->struct_ret) {
4792                 ArgInfo *ainfo = &cinfo->ret;
4793                 inst         = cfg->vret_addr;
4794                 inst->backend.size = ainfo->vtsize;
4795                 s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4796         }
4797
4798         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4799                 ArgInfo *ainfo = cinfo->args + i;
4800                 inst = cfg->args [pos];
4801
4802                 if (inst->opcode == OP_VTARG_ADDR)
4803                         inst = inst->inst_left;
4804
4805                 if (inst->opcode == OP_REGVAR) {
4806                         if (ainfo->regtype == RegTypeGeneral)
4807                                 s390_lgr (code, inst->dreg, ainfo->reg);
4808                         else if (ainfo->regtype == RegTypeFP) {
4809                                 if (inst->dreg != ainfo->reg) {
4810                                         if (ainfo->size == 4) {
4811                                                 s390_ledbr (code, inst->dreg, ainfo->reg);
4812                                         } else {
4813                                                 s390_ldr   (code, inst->dreg, ainfo->reg);
4814                                         }
4815                                 }
4816                         }
4817                         else if (ainfo->regtype == RegTypeBase) {
4818                                 s390_lgr  (code, s390_r13, STK_BASE);
4819                                 s390_aghi (code, s390_r13, alloc_size);
4820                                 s390_lg   (code, inst->dreg, 0, s390_r13, ainfo->offset);
4821                         } else
4822                                 g_assert_not_reached ();
4823
4824                         if (cfg->verbose_level > 2)
4825                                 g_print ("Argument %d assigned to register %s\n",
4826                                          pos, mono_arch_regname (inst->dreg));
4827                 } else {
4828                         if (ainfo->regtype == RegTypeGeneral) {
4829                                 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4830                                         g_assert_not_reached();
4831                                 switch (ainfo->size) {
4832                                 case 1:
4833                                         s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4834                                         break;
4835                                 case 2:
4836                                         s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4837                                         break;
4838                                 case 4:
4839                                         s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4840                                         break;
4841                                 case 8:
4842                                         s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4843                                         break;
4844                                 }
4845                         } else if (ainfo->regtype == RegTypeBase) {
4846                         } else if (ainfo->regtype == RegTypeFP) {
4847                                 if (ainfo->size == 8)
4848                                         s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4849                                 else if (ainfo->size == 4)
4850                                         s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4851                                 else
4852                                         g_assert_not_reached ();
4853                         } else if (ainfo->regtype == RegTypeStructByVal) {
4854                                 int doffset = inst->inst_offset;
4855                                 int reg;
4856                                 if (ainfo->reg != STK_BASE)
4857                                         reg = ainfo->reg;
4858                                 else {
4859                                         reg = s390_r0;
4860                                         s390_lgr  (code, s390_r13, STK_BASE);
4861                                         s390_aghi (code, s390_r13, alloc_size);
4862                                 }
4863                                 switch (ainfo->size) {
4864                                         case 1:
4865                                                 if (ainfo->reg == STK_BASE)
4866                                                         s390_ic (code, reg, 0, s390_r13, ainfo->offset+7);
4867                                                 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4868                                                 break;
4869                                         case 2:
4870                                                 if (ainfo->reg == STK_BASE)
4871                                                         s390_lh (code, reg, 0, s390_r13, ainfo->offset+6);
4872                                                 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4873                                                 break;
4874                                         case 4:
4875                                                 if (ainfo->reg == STK_BASE)
4876                                                         s390_l  (code, reg, 0, s390_r13, ainfo->offset+4);
4877                                                 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4878                                                 break;
4879                                         case 8:
4880                                                 if (ainfo->reg == STK_BASE)
4881                                                         s390_lg  (code, reg, 0, s390_r13, ainfo->offset);
4882                                                 s390_stg (code, reg, 0, inst->inst_basereg, doffset);
4883                                                 break;
4884                                 }
4885                         } else if (ainfo->regtype == RegTypeStructByAddr) {
4886                                 s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4887                         } else if (ainfo->regtype == RegTypeStructByAddrOnStack) {
4888                         } else
4889                                 g_assert_not_reached ();
4890                 }
4891                 pos++;
4892         }
4893
4894         if (method->save_lmf) {
4895                 /*---------------------------------------------------------------*/
4896                 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4897                 /*---------------------------------------------------------------*/
4898                 lmfOffset = alloc_size - sizeof(MonoLMF);
4899
4900                 s390_lgr   (code, s390_r13, cfg->frame_reg);
4901                 s390_aghi  (code, s390_r13, lmfOffset);
4902
4903                 /*---------------------------------------------------------------*/
4904                 /* Preserve the parameter registers while we fix up the lmf      */
4905                 /*---------------------------------------------------------------*/
4906                 s390_stmg  (code, s390_r2, s390_r6, s390_r13,
4907                             G_STRUCT_OFFSET(MonoLMF, pregs[0]));
4908
4909                 /*---------------------------------------------------------------*/
4910                 /* On return from this call r2 have the address of the &lmf      */
4911                 /*---------------------------------------------------------------*/
4912                 s390_basr(code, s390_r10, 0);
4913                 s390_j   (code, 6);
4914                 mono_add_patch_info (cfg, code - cfg->native_code,
4915                                      MONO_PATCH_INFO_INTERNAL_METHOD,
4916                                      (gpointer)"mono_get_lmf_addr");
4917                 s390_llong(code, 0);
4918                 s390_lg   (code, s390_r1, 0, s390_r10, 4);
4919                 s390_basr (code, s390_r14, s390_r1);
4920
4921                 /*---------------------------------------------------------------*/
4922                 /* Set lmf.lmf_addr = jit_tls->lmf                               */
4923                 /*---------------------------------------------------------------*/
4924                 s390_stg   (code, s390_r2, 0, s390_r13,
4925                             G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4926
4927                 /*---------------------------------------------------------------*/
4928                 /* Get current lmf                                               */
4929                 /*---------------------------------------------------------------*/
4930                 s390_lg    (code, s390_r0, 0, s390_r2, 0);
4931
4932                 /*---------------------------------------------------------------*/
4933                 /* Set our lmf as the current lmf                                */
4934                 /*---------------------------------------------------------------*/
4935                 s390_stg   (code, s390_r13, 0, s390_r2, 0);
4936
4937                 /*---------------------------------------------------------------*/
4938                 /* Have our lmf.previous_lmf point to the last lmf               */
4939                 /*---------------------------------------------------------------*/
4940                 s390_stg   (code, s390_r0, 0, s390_r13,
4941                             G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4942
4943                 /*---------------------------------------------------------------*/
4944                 /* save method info                                              */
4945                 /*---------------------------------------------------------------*/
4946                 s390_basr  (code, s390_r1, 0);
4947                 s390_j     (code, 6);
4948                 s390_llong (code, method);
4949                 s390_lg    (code, s390_r1, 0, s390_r1, 4);
4950                 s390_stg   (code, s390_r1, 0, s390_r13,
4951                             G_STRUCT_OFFSET(MonoLMF, method));
4952
4953                 /*---------------------------------------------------------------*/
4954                 /* save the current IP                                           */
4955                 /*---------------------------------------------------------------*/
4956                 s390_stg   (code, STK_BASE, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
4957                 s390_basr  (code, s390_r1, 0);
4958                 s390_stg   (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
4959
4960                 /*---------------------------------------------------------------*/
4961                 /* Save general and floating point registers                     */
4962                 /*---------------------------------------------------------------*/
4963                 s390_stmg  (code, s390_r2, s390_r12, s390_r13,
4964                             G_STRUCT_OFFSET(MonoLMF, gregs[2]));
4965                 for (i = 0; i < 16; i++) {
4966                         s390_std  (code, i, 0, s390_r13,
4967                                    G_STRUCT_OFFSET(MonoLMF, fregs[i]));
4968                 }
4969
4970                 /*---------------------------------------------------------------*/
4971                 /* Restore the parameter registers now that we've set up the lmf */
4972                 /*---------------------------------------------------------------*/
4973                 s390_lmg   (code, s390_r2, s390_r6, s390_r13,
4974                             G_STRUCT_OFFSET(MonoLMF, pregs[0]));
4975         }
4976
4977         if (tracing)
4978                 code = mono_arch_instrument_prolog(cfg, enter_method, code, TRUE);
4979
4980         cfg->code_len = code - cfg->native_code;
4981         g_assert (cfg->code_len < cfg->code_size);
4982
4983         return code;
4984 }
4985
4986 /*========================= End of Function ========================*/
4987
4988 /*------------------------------------------------------------------*/
4989 /*                                                                  */
4990 /* Name         - mono_arch_emit_epilog                             */
4991 /*                                                                  */
4992 /* Function     - Emit the instructions for a function epilog.      */
4993 /*                                                                  */
4994 /*------------------------------------------------------------------*/
4995
4996 void
4997 mono_arch_emit_epilog (MonoCompile *cfg)
4998 {
4999         MonoMethod *method = cfg->method;
5000         int tracing = 0;
5001         guint8 *code;
5002         int max_epilog_size = 96;
5003
5004         if (cfg->method->save_lmf)
5005                 max_epilog_size += 128;
5006
5007         if (mono_jit_trace_calls != NULL)
5008                 max_epilog_size += 128;
5009
5010         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
5011                 max_epilog_size += 128;
5012
5013         while ((cfg->code_len + max_epilog_size) > (cfg->code_size - 16)) {
5014                 cfg->code_size  *= 2;
5015                 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
5016                 mono_jit_stats.code_reallocs++;
5017         }
5018
5019         code = cfg->native_code + cfg->code_len;
5020
5021         if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
5022                 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
5023                 tracing = 1;
5024         }
5025
5026         if (method->save_lmf)
5027                 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
5028
5029         if (cfg->flags & MONO_CFG_HAS_ALLOCA)
5030                 s390_lg  (code, STK_BASE, 0, STK_BASE, 0);
5031         else
5032                 code = backUpStackPtr(cfg, code);
5033
5034         s390_lmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
5035         s390_br  (code, s390_r14);
5036
5037         cfg->code_len = code - cfg->native_code;
5038
5039         g_assert (cfg->code_len < cfg->code_size);
5040
5041 }
5042
5043 /*========================= End of Function ========================*/
5044
5045 /*------------------------------------------------------------------*/
5046 /*                                                                  */
5047 /* Name         - mono_arch_emit_exceptions                         */
5048 /*                                                                  */
5049 /* Function     - Emit the blocks to handle exception conditions.   */
5050 /*                                                                  */
5051 /*------------------------------------------------------------------*/
5052
5053 void
5054 mono_arch_emit_exceptions (MonoCompile *cfg)
5055 {
5056         MonoJumpInfo    *patch_info;
5057         guint8          *code;
5058         int             nThrows = 0,
5059                         exc_count = 0,
5060                         iExc;
5061         guint32         code_size;
5062         MonoClass       *exc_classes [MAX_EXC];
5063         guint8          *exc_throw_start [MAX_EXC];
5064
5065         for (patch_info = cfg->patch_info;
5066              patch_info;
5067              patch_info = patch_info->next) {
5068                 if (patch_info->type == MONO_PATCH_INFO_EXC)
5069                         exc_count++;
5070         }
5071
5072         code_size = exc_count * 48;
5073
5074         while ((cfg->code_len + code_size) > (cfg->code_size - 16)) {
5075                 cfg->code_size  *= 2;
5076                 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
5077                 mono_jit_stats.code_reallocs++;
5078         }
5079
5080         code = cfg->native_code + cfg->code_len;
5081
5082         /*---------------------------------------------------------------------*/
5083         /* Add code to raise exceptions                                        */
5084         /*---------------------------------------------------------------------*/
5085         for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
5086                 switch (patch_info->type) {
5087                 case MONO_PATCH_INFO_EXC: {
5088                         guint8 *ip = patch_info->ip.i + cfg->native_code;
5089                         MonoClass *exc_class;
5090                         guint64 throw_ip;
5091
5092                         /*-----------------------------------------------------*/
5093                         /* Patch the branch in epilog to come here             */
5094                         /*-----------------------------------------------------*/
5095                         s390_patch_rel (ip + 2, (guint64) S390_RELATIVE(code,ip));
5096
5097                         exc_class = mono_class_from_name (mono_defaults.corlib,
5098                                                           "System",
5099                                                           patch_info->data.name);
5100                         g_assert (exc_class);
5101                         throw_ip = patch_info->ip.i;
5102
5103                         for (iExc = 0; iExc < nThrows; ++iExc)
5104                                 if (exc_classes [iExc] == exc_class)
5105                                         break;
5106
5107                         if (iExc < nThrows) {
5108                                 s390_jcl (code, S390_CC_UN,
5109                                           (guint64) exc_throw_start [iExc]);
5110                                 patch_info->type = MONO_PATCH_INFO_NONE;
5111                         } else {
5112
5113                                 if (nThrows < MAX_EXC) {
5114                                         exc_classes [nThrows]     = exc_class;
5115                                         exc_throw_start [nThrows] = code;
5116                                 }
5117
5118                                 /*---------------------------------------------*/
5119                                 /* Patch the parameter passed to the handler   */
5120                                 /*---------------------------------------------*/
5121                                 s390_basr (code, s390_r13, 0);
5122                                 s390_j    (code, 6);
5123                                 s390_llong(code, patch_info->data.target);
5124                                 /*---------------------------------------------*/
5125                                 /* Load return address & parameter register    */
5126                                 /*---------------------------------------------*/
5127                                 s390_larl (code, s390_r14, (guint64)S390_RELATIVE((patch_info->ip.i +
5128                                                            cfg->native_code + 8), code));
5129                                 s390_lg   (code, s390_r2, 0, s390_r13, 4);
5130                                 /*---------------------------------------------*/
5131                                 /* Reuse the current patch to set the jump     */
5132                                 /*---------------------------------------------*/
5133                                 s390_basr (code, s390_r13, 0);
5134                                 s390_j    (code, 6);
5135                                 patch_info->type      = MONO_PATCH_INFO_INTERNAL_METHOD;
5136                                 patch_info->data.name = "mono_arch_throw_exception_by_name";
5137                                 patch_info->ip.i      = code - cfg->native_code;
5138                                 s390_llong(code, 0);
5139                                 s390_lg   (code, s390_r1, 0, s390_r13, 4);
5140                                 s390_br   (code, s390_r1);
5141                         }
5142                         break;
5143                 }
5144                 default:
5145                         /* do nothing */
5146                         break;
5147                 }
5148         }
5149
5150         cfg->code_len = code - cfg->native_code;
5151
5152         g_assert (cfg->code_len < cfg->code_size);
5153
5154 }
5155
5156 /*========================= End of Function ========================*/
5157
5158 /*------------------------------------------------------------------*/
5159 /*                                                                  */
5160 /* Name         - mono_arch_setup_jit_tls_data                      */
5161 /*                                                                  */
5162 /* Function     - Setup the JIT's Thread Level Specific Data.       */
5163 /*                                                                  */
5164 /*------------------------------------------------------------------*/
5165
5166 void
5167 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
5168 {
5169         if (!tls_offset_inited) {
5170                 tls_offset_inited = TRUE;
5171
5172 #if HAVE_KW_THREAD
5173 # if 0
5174         __asm__ ("\tear\t%r1,0\n"
5175                  "\tlr\t%0,%3\n"
5176                  "\tsr\t%0,%r1\n"
5177                  "\tlr\t%1,%4\n"
5178                  "\tsr\t%1,%r1\n"
5179                  "\tlr\t%2,%5\n"
5180                  "\tsr\t%2,%r1\n"
5181                  : "=r" (appdomain_tls_offset),
5182                    "=r" (thread_tls_offset),
5183                    "=r" (lmf_tls_offset)
5184                  : "r" (&tls_appdomain),
5185                    "r" (&tls_current_object),
5186                    "r" (&mono_lmf_addr)
5187                  : "1", "cc");
5188 # endif
5189 #endif
5190         }
5191
5192         if (!lmf_addr_key_inited) {
5193                 lmf_addr_key_inited = TRUE;
5194                 pthread_key_create (&lmf_addr_key, NULL);
5195         }
5196         pthread_setspecific (lmf_addr_key, &tls->lmf);
5197
5198 }
5199
5200 /*========================= End of Function ========================*/
5201
5202 /*------------------------------------------------------------------*/
5203 /*                                                                  */
5204 /* Name         - mono_arch_free_jit_tls_data                       */
5205 /*                                                                  */
5206 /* Function     - Free tls data.                                    */
5207 /*                                                                  */
5208 /*------------------------------------------------------------------*/
5209
5210 void
5211 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
5212 {
5213 }
5214
5215 /*========================= End of Function ========================*/
5216
5217 /*------------------------------------------------------------------*/
5218 /*                                                                  */
5219 /* Name         - mono_arch_emit_inst_for_method                        */
5220 /*                                                                  */
5221 /*------------------------------------------------------------------*/
5222
5223 MonoInst*
5224 mono_arch_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5225 {
5226         return NULL;
5227 }
5228
5229 /*========================= End of Function ========================*/
5230
5231 void
5232 mono_arch_decompose_opts (MonoCompile *cfg, MonoInst *ins)
5233 {
5234         /*
5235          * Have to rename these to avoid being decomposed normally, since the normal
5236          * decomposition does not work on S390.
5237          */
5238         switch (ins->opcode) {
5239         case OP_ISUB_OVF:
5240                 ins->opcode = OP_S390_ISUB_OVF;
5241                 break;
5242         case OP_ISUB_OVF_UN:
5243                 ins->opcode = OP_S390_ISUB_OVF_UN;
5244                 break;
5245         case OP_IADD_OVF:
5246                 ins->opcode = OP_S390_IADD_OVF;
5247                 break;
5248         case OP_IADD_OVF_UN:
5249                 ins->opcode = OP_S390_IADD_OVF_UN;
5250                 break;
5251         case OP_LADD_OVF:
5252                 ins->opcode = OP_S390_LADD_OVF;
5253                 break;
5254         case OP_LADD_OVF_UN:
5255                 ins->opcode = OP_S390_LADD_OVF_UN;
5256                 break;
5257         case OP_LSUB_OVF:
5258                 ins->opcode = OP_S390_LSUB_OVF;
5259                 break;
5260         case OP_LSUB_OVF_UN:
5261                 ins->opcode = OP_S390_LSUB_OVF_UN;
5262                 break;
5263         default:
5264                 break;
5265         }
5266 }
5267
5268 /*========================= End of Function ========================*/
5269
5270 /*------------------------------------------------------------------*/
5271 /*                                                                  */
5272 /* Name         - mono_arch_print_tree                              */
5273 /*                                                                  */
5274 /* Function     - Print platform-specific opcode details.           */
5275 /*                                                                  */
5276 /* Returns      - 1 - opcode details have been printed              */
5277 /*                0 - opcode details have not been printed          */
5278 /*                                                                  */
5279 /*------------------------------------------------------------------*/
5280
5281 gboolean
5282 mono_arch_print_tree (MonoInst *tree, int arity)
5283 {
5284         gboolean done;
5285
5286         switch (tree->opcode) {
5287                 case OP_S390_LOADARG:
5288                 case OP_S390_ARGREG:
5289                 case OP_S390_ARGPTR:
5290                         printf ("[0x%lx(%s)]", tree->inst_offset,
5291                                 mono_arch_regname (tree->inst_basereg));
5292                         done = 1;
5293                         break;
5294                 case OP_S390_STKARG:
5295                         printf ("[0x%lx(previous_frame)]",
5296                                 tree->inst_offset);
5297                         done = 1;
5298                         break;
5299                 case OP_S390_MOVE:
5300                         printf ("[0x%lx(%d,%s),0x%lx(%s)]",
5301                                 tree->inst_offset, tree->backend.size,
5302                                 mono_arch_regname(tree->dreg),
5303                                 tree->inst_imm,
5304                                 mono_arch_regname(tree->sreg1));
5305                         done = 1;
5306                         break;
5307                 case OP_S390_SETF4RET:
5308                         printf ("[f%s,f%s]",
5309                                 mono_arch_regname (tree->dreg),
5310                                 mono_arch_regname (tree->sreg1));
5311                         done = 1;
5312                         break;
5313                 case OP_TLS_GET:
5314                         printf ("[0x%lx(0x%lx,%s)]", tree->inst_offset,
5315                                 tree->inst_imm,
5316                                 mono_arch_regname (tree->sreg1));
5317                         done = 1;
5318                         break;
5319                 case OP_S390_BKCHAIN:
5320                         printf ("[previous_frame(%s)]",
5321                                 mono_arch_regname (tree->sreg1));
5322                         done = 1;
5323                 default:
5324                         done = 0;
5325         }
5326         return (done);
5327 }
5328
5329 /*========================= End of Function ========================*/
5330
5331 /*------------------------------------------------------------------*/
5332 /*                                                                  */
5333 /* Name         - mono_arch_regalloc_cost                           */
5334 /*                                                                  */
5335 /* Function     - Determine the cost, in the number of memory       */
5336 /*                references, of the action of allocating the var-  */
5337 /*                iable VMV into a register during global register  */
5338 /*                allocation.                                       */
5339 /*                                                                  */
5340 /* Returns      - Cost                                              */
5341 /*                                                                  */
5342 /*------------------------------------------------------------------*/
5343
5344 guint32
5345 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
5346 {
5347         /* FIXME: */
5348         return 2;
5349 }
5350
5351 /*========================= End of Function ========================*/
5352
5353 /*------------------------------------------------------------------*/
5354 /*                                                                  */
5355 /* Name         - mono_arch_get_domain_intrinsic                    */
5356 /*                                                                  */
5357 /* Function     -                                                   */
5358 /*                                                                  */
5359 /* Returns      -                                                   */
5360 /*                                                                  */
5361 /*------------------------------------------------------------------*/
5362
5363 MonoInst *
5364 mono_arch_get_domain_intrinsic (MonoCompile* cfg)
5365 {
5366         MonoInst *ins;
5367
5368         if (appdomain_tls_offset == -1)
5369                 return NULL;
5370
5371         MONO_INST_NEW (cfg, ins, OP_TLS_GET);
5372         ins->inst_offset = appdomain_tls_offset;
5373         return (ins);
5374 }
5375
5376 /*========================= End of Function ========================*/
5377
5378 /*------------------------------------------------------------------*/
5379 /*                                                                  */
5380 /* Name         - mono_arch_get_thread_intrinsic                    */
5381 /*                                                                  */
5382 /* Function     -                                                   */
5383 /*                                                                  */
5384 /* Returns      -                                                   */
5385 /*                                                                  */
5386 /*------------------------------------------------------------------*/
5387
5388 MonoInst *
5389 mono_arch_get_thread_intrinsic (MonoCompile* cfg)
5390 {
5391         MonoInst *ins;
5392
5393         if (thread_tls_offset == -1)
5394                 return NULL;
5395
5396         MONO_INST_NEW (cfg, ins, OP_TLS_GET);
5397         ins->inst_offset = thread_tls_offset;
5398         return (ins);
5399 }
5400
5401 /*========================= End of Function ========================*/
5402
5403 /*------------------------------------------------------------------*/
5404 /*                                                                  */
5405 /* Name         - mono_arch_flush_register_windows                  */
5406 /*                                                                  */
5407 /* Function     -                                                   */
5408 /*                                                                  */
5409 /* Returns      -                                                   */
5410 /*                                                                  */
5411 /*------------------------------------------------------------------*/
5412
5413 void
5414 mono_arch_flush_register_windows (void)
5415 {
5416 }
5417
5418 /*========================= End of Function ========================*/
5419
5420 /*------------------------------------------------------------------*/
5421 /*                                                                  */
5422 /* Name         - mono_arch_get_lmf_addr                            */
5423 /*                                                                  */
5424 /* Function     -                                                   */
5425 /*                                                                  */
5426 /* Returns      -                                                   */
5427 /*                                                                  */
5428 /*------------------------------------------------------------------*/
5429
5430 gpointer
5431 mono_arch_get_lmf_addr (void)
5432 {
5433         return pthread_getspecific (lmf_addr_key);
5434 }
5435
5436 /*========================= End of Function ========================*/
5437
5438 /*------------------------------------------------------------------*/
5439 /*                                                                  */
5440 /* Name         - mono_arch_is_inst_imm                             */
5441 /*                                                                  */
5442 /* Function     - Determine if operand qualifies as an immediate    */
5443 /*                value. For s390 this is a value -32768-32768      */
5444 /*                                                                  */
5445 /* Returns      - True|False - is [not] immediate value.            */
5446 /*                                                                  */
5447 /*------------------------------------------------------------------*/
5448
5449 gboolean
5450 mono_arch_is_inst_imm (gint64 imm)
5451 {
5452         return s390_is_imm16 (imm);
5453 }
5454
5455 /*========================= End of Function ========================*/
5456
5457 /*------------------------------------------------------------------*/
5458 /*                                                                  */
5459 /* Name         - mono_arch_get_patch_offset                        */
5460 /*                                                                  */
5461 /* Function     - Dummy entry point until s390x supports aot.       */
5462 /*                                                                  */
5463 /* Returns      - Offset for patch.                                 */
5464 /*                                                                  */
5465 /*------------------------------------------------------------------*/
5466
5467 guint32
5468 mono_arch_get_patch_offset (guint8 *code)
5469 {
5470         return 0;
5471 }
5472
5473 /*========================= End of Function ========================*/
5474
5475 gpointer
5476 mono_arch_context_get_int_reg (MonoContext *ctx, int reg)
5477 {
5478         /* FIXME: implement */
5479         g_assert_not_reached ();
5480         return NULL;
5481 }