src/vm/jit/powerpc/codegen.c

   1 /* src/vm/jit/powerpc/codegen.c - machine code generator for 32-bit PowerPC
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 #include <assert.h>
  29 #include <stdio.h>
  30 #include <signal.h>
  31
  32 #include "vm/types.h"
  33
  34 #include "md-abi.h"
  35
  36 #include "vm/jit/powerpc/arch.h"
  37 #include "vm/jit/powerpc/codegen.h"
  38
  39 #include "mm/memory.h"
  40
  41 #include "native/localref.h"
  42 #include "native/native.h"
  43
  44 #include "threads/lock-common.h"
  45
  46 #include "vm/builtin.h"
  47 #include "vm/exceptions.h"
  48 #include "vm/global.h"
  49 #include "vm/stringlocal.h"
  50 #include "vm/vm.h"
  51
  52 #include "vm/jit/abi.h"
  53 #include "vm/jit/abi-asm.h"
  54 #include "vm/jit/asmpart.h"
  55 #include "vm/jit/codegen-common.h"
  56 #include "vm/jit/dseg.h"
  57 #include "vm/jit/emit-common.h"
  58 #include "vm/jit/jit.h"
  59 #include "vm/jit/linenumbertable.h"
  60 #include "vm/jit/methodheader.h"
  61 #include "vm/jit/parse.h"
  62 #include "vm/jit/patcher-common.h"
  63 #include "vm/jit/reg.h"
  64 #include "vm/jit/replace.h"
  65 #include "vm/jit/stacktrace.h"
  66 #include "vm/jit/trap.h"
  67
  68 #if defined(ENABLE_LSRA)
  69 # include "vm/jit/allocator/lsra.h"
  70 #endif
  71
  72 #include "vmcore/loader.h"
  73 #include "vmcore/options.h"
  74
  75
  76 /* codegen *********************************************************************
  77
  78    Generates machine code.
  79
  80 *******************************************************************************/
  81
  82 bool codegen_emit(jitdata *jd)
  83 {
  84         methodinfo         *m;
  85         codeinfo           *code;
  86         codegendata        *cd;
  87         registerdata       *rd;
  88         s4                  len, s1, s2, s3, d, disp;
  89         varinfo            *var;
  90         basicblock         *bptr;
  91         instruction        *iptr;
  92         u2                  currentline;
  93         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  94         unresolved_method  *um;
  95         builtintable_entry *bte;
  96         methoddesc         *md;
  97         fieldinfo          *fi;
  98         unresolved_field   *uf;
  99         s4                  fieldtype;
 100         s4                  varindex;
 101         int                 i;
 102
 103         /* get required compiler data */
 104
 105         m    = jd->m;
 106         code = jd->code;
 107         cd   = jd->cd;
 108         rd   = jd->rd;
 109
 110         /* prevent compiler warnings */
 111
 112         d         = 0;
 113         fieldtype = 0;
 114         lm        = NULL;
 115         um        = NULL;
 116         uf        = NULL;
 117         bte       = NULL;
 118
 119         {
 120         s4 i, p, t, l;
 121         s4 savedregs_num;
 122
 123         savedregs_num = 0;
 124
 125         /* space to save used callee saved registers */
 126
 127         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 128         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 129
 130         cd->stackframesize = rd->memuse + savedregs_num;
 131
 132 #if defined(ENABLE_THREADS)
 133         /* Space to save argument of monitor_enter and Return Values to
 134            survive monitor_exit. The stack position for the argument can
 135            not be shared with place to save the return register on PPC,
 136            since both values reside in R3. */
 137
 138         if (checksync && code_is_synchronized(code))
 139                 cd->stackframesize += 2;
 140 #endif
 141
 142         /* create method header */
 143
 144         /* align stack to 16-bytes */
 145
 146         if (!code_is_leafmethod(code) || JITDATA_HAS_FLAG_VERBOSECALL(jd))
 147                 ALIGN_2(cd->stackframesize);
 148
 149         else if (code_is_leafmethod(code) && (cd->stackframesize == LA_SIZE_IN_POINTERS))
 150                 cd->stackframesize = 0;
 151
 152         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
 153         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
 154
 155         code->synchronizedoffset = rd->memuse * 8;
 156
 157         /* REMOVEME: We still need it for exception handling in assembler. */
 158
 159         if (code_is_leafmethod(code))
 160                 (void) dseg_add_unique_s4(cd, 1);
 161         else
 162                 (void) dseg_add_unique_s4(cd, 0);
 163
 164         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave */
 165         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave */
 166
 167 #if defined(ENABLE_PROFILING)
 168         /* generate method profiling code */
 169
 170         if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 171                 /* count frequency */
 172
 173                 M_ALD(REG_ITMP1, REG_PV, CodeinfoPointer);
 174                 M_ALD(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 175                 M_IADD_IMM(REG_ITMP2, 1, REG_ITMP2);
 176                 M_AST(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 177
 178 /*              PROFILE_CYCLE_START; */
 179         }
 180 #endif
 181
 182         /* create stack frame (if necessary) */
 183
 184         if (!code_is_leafmethod(code)) {
 185                 M_MFLR(REG_ZERO);
 186                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 187         }
 188
 189         if (cd->stackframesize)
 190                 M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 8));
 191
 192         /* save return address and used callee saved registers */
 193
 194         p = cd->stackframesize;
 195         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 196                 p--; M_IST(rd->savintregs[i], REG_SP, p * 8);
 197         }
 198         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 199                 p--; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 200         }
 201
 202         /* take arguments out of register or stack frame */
 203
 204         md = m->parseddesc;
 205
 206         for (p = 0, l = 0; p < md->paramcount; p++) {
 207                 t = md->paramtypes[p].type;
 208                 varindex = jd->local_map[l * 5 + t];
 209
 210                 l++;
 211                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 212                         l++;
 213
 214                 if (varindex == UNUSED)
 215                         continue;
 216
 217                 var = VAR(varindex);
 218                 s1  = md->params[p].regoff;
 219
 220                 if (IS_INT_LNG_TYPE(t)) {
 221                         if (!md->params[p].inmemory) {
 222                                 if (!IS_INMEMORY(var->flags)) {
 223                                         if (IS_2_WORD_TYPE(t))
 224                                                 M_LNGMOVE(s1, var->vv.regoff);
 225                                         else
 226                                                 M_INTMOVE(s1, var->vv.regoff);
 227                                 }
 228                                 else {
 229                                         if (IS_2_WORD_TYPE(t))
 230                                                 M_LST(s1, REG_SP, var->vv.regoff);
 231                                         else
 232                                                 M_IST(s1, REG_SP, var->vv.regoff);
 233                                 }
 234                         }
 235                         else {
 236                                 if (!IS_INMEMORY(var->flags)) {
 237                                         if (IS_2_WORD_TYPE(t))
 238                                                 M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 239                                         else
 240                                                 M_ILD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 241                                 }
 242                                 else {
 243 #if 1
 244                                         M_ILD(REG_ITMP1, REG_SP, cd->stackframesize * 8 + s1);
 245                                         M_IST(REG_ITMP1, REG_SP, var->vv.regoff);
 246                                         if (IS_2_WORD_TYPE(t)) {
 247                                                 M_ILD(REG_ITMP1, REG_SP, cd->stackframesize * 8 + s1 + 4);
 248                                                 M_IST(REG_ITMP1, REG_SP, var->vv.regoff + 4);
 249                                         }
 250 #else
 251                                         /* Reuse Memory Position on Caller Stack */
 252                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 253 #endif
 254                                 }
 255                         }
 256                 }
 257                 else {
 258                         if (!md->params[p].inmemory) {
 259                                 if (!IS_INMEMORY(var->flags))
 260                                         M_FLTMOVE(s1, var->vv.regoff);
 261                                 else
 262                                         M_DST(s1, REG_SP, var->vv.regoff);
 263                         }
 264                         else {
 265                                 if (!IS_INMEMORY(var->flags))
 266                                         M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 267                                 else {
 268 #if 1
 269                                         M_DLD(REG_FTMP1, REG_SP, cd->stackframesize * 8 + s1);
 270                                         M_DST(REG_FTMP1, REG_SP, var->vv.regoff);
 271 #else
 272                                         /* Reuse Memory Position on Caller Stack */
 273                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 274 #endif
 275                                 }
 276                         }
 277                 }
 278         }
 279
 280 #if defined(ENABLE_THREADS)
 281         /* call monitorenter function */
 282
 283         if (checksync && code_is_synchronized(code)) {
 284                 /* stack offset for monitor argument */
 285
 286                 s1 = rd->memuse;
 287
 288 # if !defined(NDEBUG)
 289                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 290                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 291
 292                         for (p = 0; p < INT_ARG_CNT; p++)
 293                                 M_IST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 294
 295                         for (p = 0; p < FLT_ARG_CNT; p++)
 296                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 297
 298                         s1 += LA_SIZE_IN_POINTERS + ARG_CNT;
 299                 }
 300 # endif
 301
 302                 disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
 303                 M_ALD(REG_ITMP3, REG_PV, disp);
 304                 M_MTCTR(REG_ITMP3);
 305
 306                 /* get or test the lock object */
 307
 308                 if (m->flags & ACC_STATIC) {
 309                         disp = dseg_add_address(cd, &m->clazz->object.header);
 310                         M_ALD(REG_A0, REG_PV, disp);
 311                 }
 312                 else {
 313                         M_TST(REG_A0);
 314                         M_BNE(1);
 315                         M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_NullPointerException);
 316                 }
 317
 318                 M_AST(REG_A0, REG_SP, s1 * 8);
 319                 M_JSR;
 320
 321 # if !defined(NDEBUG)
 322                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 323                         for (p = 0; p < INT_ARG_CNT; p++)
 324                                 M_ILD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 325
 326                         for (p = 0; p < FLT_ARG_CNT; p++)
 327                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 328
 329                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 330                 }
 331 # endif
 332         }
 333 #endif /* defined(ENABLE_THREADS) */
 334
 335         /* call trace function */
 336
 337         emit_verbosecall_enter(jd);
 338         }
 339
 340         /* end of header generation */
 341
 342         /* create replacement points */
 343
 344         REPLACEMENT_POINTS_INIT(cd, jd);
 345
 346         /* walk through all basic blocks */
 347
 348         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 349
 350                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 351
 352                 if (bptr->flags >= BBREACHED) {
 353                 /* branch resolving */
 354
 355                 codegen_resolve_branchrefs(cd, bptr);
 356
 357                 /* handle replacement points */
 358
 359                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 360
 361 #if defined(ENABLE_PROFILING)
 362                 /* generate basicblock profiling code */
 363
 364                 if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 365                         /* count frequency */
 366
 367                         disp = dseg_add_address(cd, code->bbfrequency);
 368                         M_ALD(REG_ITMP2, REG_PV, disp);
 369                         M_ALD(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 370                         M_IADD_IMM(REG_ITMP3, 1, REG_ITMP3);
 371                         M_AST(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 372
 373                         /* if this is an exception handler, start profiling again */
 374
 375 /*                      if (bptr->type == BBTYPE_EXH) */
 376 /*                              PROFILE_CYCLE_START; */
 377                 }
 378 #endif
 379
 380                 /* copy interface registers to their destination */
 381
 382                 len = bptr->indepth;
 383                 MCODECHECK(64+len);
 384
 385 #if defined(ENABLE_LSRA)
 386                 if (opt_lsra) {
 387                         while (src != NULL) {
 388                                 len--;
 389                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 390                                         /* d = reg_of_var(m, src, REG_ITMP1); */
 391                                         if (!IS_INMEMORY(src->flags))
 392                                                 d = src->vv.regoff;
 393                                         else
 394                                                 d = REG_ITMP1;
 395                                         M_INTMOVE(REG_ITMP1, d);
 396                                         emit_store(jd, NULL, src, d);
 397                                 }
 398                                 src = src->prev;
 399                         }
 400                 } else {
 401 #endif
 402                 while (len > 0) {
 403                         len--;
 404                         var = VAR(bptr->invars[len]);
 405                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 406                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 407                                 M_INTMOVE(REG_ITMP1, d);
 408                                 emit_store(jd, NULL, var, d);
 409                         }
 410                         else {
 411                                 assert((var->flags & INOUT));
 412                         }
 413                 }
 414
 415 #if defined(ENABLE_LSRA)
 416                 }
 417 #endif
 418                 /* walk through all instructions */
 419
 420                 len = bptr->icount;
 421                 currentline = 0;
 422
 423                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 424                         if (iptr->line != currentline) {
 425                                 linenumbertable_list_entry_add(cd, iptr->line);
 426                                 currentline = iptr->line;
 427                         }
 428
 429                         MCODECHECK(64);   /* an instruction usually needs < 64 words      */
 430
 431                 switch (iptr->opc) {
 432                 case ICMD_NOP:        /* ...  ==> ...                                 */
 433                 case ICMD_POP:        /* ..., value  ==> ...                          */
 434                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 435                         break;
 436
 437                 case ICMD_INLINE_START:
 438
 439                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 440                         break;
 441
 442                 case ICMD_INLINE_BODY:
 443
 444                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 445                         linenumbertable_list_entry_add_inline_start(cd, iptr);
 446                         linenumbertable_list_entry_add(cd, iptr->line);
 447                         break;
 448
 449                 case ICMD_INLINE_END:
 450
 451                         linenumbertable_list_entry_add_inline_end(cd, iptr);
 452                         linenumbertable_list_entry_add(cd, iptr->line);
 453                         break;
 454
 455                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 456
 457                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 458                         emit_nullpointer_check(cd, iptr, s1);
 459                         break;
 460
 461                 /* constant operations ************************************************/
 462
 463                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 464
 465                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 466                         ICONST(d, iptr->sx.val.i);
 467                         emit_store_dst(jd, iptr, d);
 468                         break;
 469
 470                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 471
 472                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 473                         LCONST(d, iptr->sx.val.l);
 474                         emit_store_dst(jd, iptr, d);
 475                         break;
 476
 477                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 478
 479                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 480                         disp = dseg_add_float(cd, iptr->sx.val.f);
 481                         M_FLD(d, REG_PV, disp);
 482                         emit_store_dst(jd, iptr, d);
 483                         break;
 484
 485                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 486
 487                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 488                         disp = dseg_add_double(cd, iptr->sx.val.d);
 489                         M_DLD(d, REG_PV, disp);
 490                         emit_store_dst(jd, iptr, d);
 491                         break;
 492
 493                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 494
 495                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 496
 497                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 498                                 constant_classref *cr = iptr->sx.val.c.ref;;
 499
 500                                 disp = dseg_add_unique_address(cd, cr);
 501
 502                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
 503                                                                         cr, disp);
 504                         }
 505                         else
 506                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 507
 508                         M_ALD(d, REG_PV, disp);
 509                         emit_store_dst(jd, iptr, d);
 510                         break;
 511
 512
 513                 /* load/store/copy/move operations ************************************/
 514
 515                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 516                 case ICMD_ALOAD:      /* s1 = local variable                          */
 517                 case ICMD_LLOAD:
 518                 case ICMD_FLOAD:
 519                 case ICMD_DLOAD:
 520                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 521                 case ICMD_LSTORE:
 522                 case ICMD_FSTORE:
 523                 case ICMD_DSTORE:
 524                 case ICMD_COPY:
 525                 case ICMD_MOVE:
 526
 527                         emit_copy(jd, iptr);
 528                         break;
 529
 530                 case ICMD_ASTORE:
 531
 532                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 533                                 emit_copy(jd, iptr);
 534                         break;
 535
 536
 537                 /* integer operations *************************************************/
 538
 539                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 540
 541                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 542                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 543                         M_NEG(s1, d);
 544                         emit_store_dst(jd, iptr, d);
 545                         break;
 546
 547                 case ICMD_LNEG:       /* ..., value  ==> ..., - value                 */
 548
 549                         s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
 550                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 551                         M_SUBFIC(GET_LOW_REG(s1), 0, GET_LOW_REG(d));
 552                         M_SUBFZE(GET_HIGH_REG(s1), GET_HIGH_REG(d));
 553                         emit_store_dst(jd, iptr, d);
 554                         break;
 555
 556                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 557
 558                         s1 = emit_load_s1(jd, iptr, REG_ITMP2);
 559                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 560                         M_INTMOVE(s1, GET_LOW_REG(d));
 561                         M_SRA_IMM(GET_LOW_REG(d), 31, GET_HIGH_REG(d));
 562                         emit_store_dst(jd, iptr, d);
 563                         break;
 564
 565                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 566
 567                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP2);
 568                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 569                         M_INTMOVE(s1, d);
 570                         emit_store_dst(jd, iptr, d);
 571                         break;
 572
 573                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 574
 575                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 576                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 577                         M_BSEXT(s1, d);
 578                         emit_store_dst(jd, iptr, d);
 579                         break;
 580
 581                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 582
 583                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 584                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 585                         M_CZEXT(s1, d);
 586                         emit_store_dst(jd, iptr, d);
 587                         break;
 588
 589                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 590
 591                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 592                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 593                         M_SSEXT(s1, d);
 594                         emit_store_dst(jd, iptr, d);
 595                         break;
 596
 597
 598                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 599
 600                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 601                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 602                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 603                         M_IADD(s1, s2, d);
 604                         emit_store_dst(jd, iptr, d);
 605                         break;
 606
 607                                       /* s1.localindex = variable, sx.val.i = constant*/
 608
 609                 case ICMD_IINC:
 610                 case ICMD_IADDCONST:
 611
 612                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 613                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 614                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 615                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 616                         } else {
 617                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 618                                 M_IADD(s1, REG_ITMP2, d);
 619                         }
 620                         /* XXX the old code for ICMD_IINC was as follows:
 621                         {
 622                                 u4 m = iptr->sx.val.i;
 623                                 if (m & 0x8000)
 624                                         m += 65536;
 625                                 if (m & 0xffff0000)
 626                                         M_ADDIS(s1, m >> 16, d);
 627                                 if (m & 0xffff)
 628                                         M_IADD_IMM(s1, m & 0xffff, d);
 629                         }
 630                         */
 631                         emit_store_dst(jd, iptr, d);
 632                         break;
 633
 634                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 635
 636                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 637                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 638                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 639                         M_ADDC(s1, s2, GET_LOW_REG(d));
 640                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 641                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 642                         M_ADDE(s1, s2, GET_HIGH_REG(d));
 643                         emit_store_dst(jd, iptr, d);
 644                         break;
 645
 646                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 647                                       /* sx.val.l = constant                          */
 648
 649                         s3 = iptr->sx.val.l & 0xffffffff;
 650                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 651                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 652                         if ((s3 >= -32768) && (s3 <= 32767))
 653                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 654                         else {
 655                                 ICONST(REG_ITMP2, s3);
 656                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 657                         }
 658                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 659                         s3 = iptr->sx.val.l >> 32;
 660                         if (s3 == -1)
 661                                 M_ADDME(s1, GET_HIGH_REG(d));
 662                         else if (s3 == 0)
 663                                 M_ADDZE(s1, GET_HIGH_REG(d));
 664                         else {
 665                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 666                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 667                         }
 668                         emit_store_dst(jd, iptr, d);
 669                         break;
 670
 671                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 672
 673                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 674                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 675                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 676                         M_ISUB(s1, s2, d);
 677                         emit_store_dst(jd, iptr, d);
 678                         break;
 679
 680                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 681                                       /* sx.val.i = constant                          */
 682
 683                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 684                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 685                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768))
 686                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 687                         else {
 688                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 689                                 M_ISUB(s1, REG_ITMP2, d);
 690                         }
 691                         emit_store_dst(jd, iptr, d);
 692                         break;
 693
 694                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 695
 696                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 697                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 698                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 699                         M_SUBC(s1, s2, GET_LOW_REG(d));
 700                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 701                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 702                         M_SUBE(s1, s2, GET_HIGH_REG(d));
 703                         emit_store_dst(jd, iptr, d);
 704                         break;
 705
 706                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 707                                       /* sx.val.l = constant                          */
 708
 709                         s3 = (-iptr->sx.val.l) & 0xffffffff;
 710                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 711                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 712                         if ((s3 >= -32768) && (s3 <= 32767)) {
 713                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 714                         } else {
 715                                 ICONST(REG_ITMP2, s3);
 716                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 717                         }
 718                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 719                         s3 = (-iptr->sx.val.l) >> 32;
 720                         if (s3 == -1)
 721                                 M_ADDME(s1, GET_HIGH_REG(d));
 722                         else if (s3 == 0)
 723                                 M_ADDZE(s1, GET_HIGH_REG(d));
 724                         else {
 725                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 726                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 727                         }
 728                         emit_store_dst(jd, iptr, d);
 729                         break;
 730
 731                 case ICMD_IDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 732
 733                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 734                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 735                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 736                         emit_arithmetic_check(cd, iptr, s2);
 737                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 738                         M_CMP(REG_ITMP3, s1);
 739                         M_BNE(3 + (s1 != d));
 740                         M_CMPI(s2, -1);
 741                         M_BNE(1 + (s1 != d));
 742                         M_INTMOVE(s1, d);
 743                         M_BR(1);
 744                         M_IDIV(s1, s2, d);
 745                         emit_store_dst(jd, iptr, d);
 746                         break;
 747
 748                 case ICMD_IREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 749
 750                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 751                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 752                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 753                         emit_arithmetic_check(cd, iptr, s2);
 754                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 755                         M_CMP(REG_ITMP3, s1);
 756                         M_BNE(4);
 757                         M_CMPI(s2, -1);
 758                         M_BNE(2);
 759                         M_CLR(d);
 760                         M_BR(3);
 761                         M_IDIV(s1, s2, REG_ITMP3);
 762                         M_IMUL(REG_ITMP3, s2, REG_ITMP3);
 763                         M_ISUB(s1, REG_ITMP3, d);
 764                         emit_store_dst(jd, iptr, d);
 765                         break;
 766
 767                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 768                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 769
 770                         s1 = emit_load_s1(jd, iptr, REG_A0_A1_PACKED);
 771                         s2 = emit_load_s2(jd, iptr, REG_A2_A3_PACKED);
 772
 773                         /* XXX TODO: only do this if arithmetic check is really done! */
 774                         M_IOR_TST(GET_HIGH_REG(s2), GET_LOW_REG(s2), REG_ITMP3);
 775                         /* XXX could be optimized */
 776                         emit_arithmetic_check(cd, iptr, REG_ITMP3);
 777
 778                         bte = iptr->sx.s23.s3.bte;
 779                         disp = dseg_add_functionptr(cd, bte->fp);
 780                         M_ALD(REG_ITMP3, REG_PV, disp);
 781                         M_MTCTR(REG_ITMP3);
 782
 783                         M_LNGMOVE(s1, REG_A0_A1_PACKED);
 784                         M_LNGMOVE(s2, REG_A2_A3_PACKED);
 785
 786                         M_JSR;
 787
 788                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
 789                         M_LNGMOVE(REG_RESULT_PACKED, d);
 790                         emit_store_dst(jd, iptr, d);
 791                         break;
 792
 793                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 794
 795                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 796                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 797                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 798                         M_IMUL(s1, s2, d);
 799                         emit_store_dst(jd, iptr, d);
 800                         break;
 801
 802                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 803                                       /* sx.val.i = constant                          */
 804
 805                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 806                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 807                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 808                                 M_IMUL_IMM(s1, iptr->sx.val.i, d);
 809                         else {
 810                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 811                                 M_IMUL(s1, REG_ITMP3, d);
 812                         }
 813                         emit_store_dst(jd, iptr, d);
 814                         break;
 815
 816                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 817
 818                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 819                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 820                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 821                         M_ADDZE(d, d);
 822                         emit_store_dst(jd, iptr, d);
 823                         break;
 824
 825                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 826
 827                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 828                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 829                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 830                         M_IAND_IMM(s2, 0x1f, REG_ITMP3);
 831                         M_SLL(s1, REG_ITMP3, d);
 832                         emit_store_dst(jd, iptr, d);
 833                         break;
 834
 835                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 836                                       /* sx.val.i = constant                          */
 837
 838                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 839                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 840                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 841                         emit_store_dst(jd, iptr, d);
 842                         break;
 843
 844                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 845
 846                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 847                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 848                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 849                         M_IAND_IMM(s2, 0x1f, REG_ITMP3);
 850                         M_SRA(s1, REG_ITMP3, d);
 851                         emit_store_dst(jd, iptr, d);
 852                         break;
 853
 854                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 855                                       /* sx.val.i = constant                          */
 856
 857                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 858                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 859                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 860                         emit_store_dst(jd, iptr, d);
 861                         break;
 862
 863                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 864
 865                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 866                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 867                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 868                         M_IAND_IMM(s2, 0x1f, REG_ITMP2);
 869                         M_SRL(s1, REG_ITMP2, d);
 870                         emit_store_dst(jd, iptr, d);
 871                         break;
 872
 873                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 874                                       /* sx.val.i = constant                          */
 875
 876                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 877                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 878                         if (iptr->sx.val.i & 0x1f)
 879                                 M_SRL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 880                         else {
 881                                 M_INTMOVE(s1, d);
 882                         }
 883                         emit_store_dst(jd, iptr, d);
 884                         break;
 885
 886                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 887
 888                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 889                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 890                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 891                         M_IAND(s1, s2, d);
 892                         emit_store_dst(jd, iptr, d);
 893                         break;
 894
 895                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 896                                       /* sx.val.i = constant                          */
 897
 898                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 899                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 900                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 901                                 M_IAND_IMM(s1, iptr->sx.val.i, d);
 902                         /*
 903                         else if (iptr->sx.val.i == 0xffffff) {
 904                                 M_RLWINM(s1, 0, 8, 31, d);
 905                                 }
 906                         */
 907                         else {
 908                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 909                                 M_IAND(s1, REG_ITMP3, d);
 910                         }
 911                         emit_store_dst(jd, iptr, d);
 912                         break;
 913
 914                 case ICMD_LAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 915
 916                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 917                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 918                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 919                         M_IAND(s1, s2, GET_LOW_REG(d));
 920                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 921                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 922                         M_IAND(s1, s2, GET_HIGH_REG(d));
 923                         emit_store_dst(jd, iptr, d);
 924                         break;
 925
 926                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 927                                       /* sx.val.l = constant                          */
 928
 929                         s3 = iptr->sx.val.l & 0xffffffff;
 930                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 931                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 932                         if ((s3 >= 0) && (s3 <= 65535))
 933                                 M_IAND_IMM(s1, s3, GET_LOW_REG(d));
 934                         else {
 935                                 ICONST(REG_ITMP3, s3);
 936                                 M_IAND(s1, REG_ITMP3, GET_LOW_REG(d));
 937                         }
 938                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 939                         s3 = iptr->sx.val.l >> 32;
 940                         if ((s3 >= 0) && (s3 <= 65535))
 941                                 M_IAND_IMM(s1, s3, GET_HIGH_REG(d));
 942                         else {
 943                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 944                                 M_IAND(s1, REG_ITMP3, GET_HIGH_REG(d));
 945                         }
 946                         emit_store_dst(jd, iptr, d);
 947                         break;
 948
 949                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 950                                       /* sx.val.i = constant                          */
 951
 952                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 953                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 954                         M_MOV(s1, REG_ITMP2);
 955                         M_CMPI(s1, 0);
 956                         M_BGE(1 + 2*(iptr->sx.val.i >= 32768));
 957                         if (iptr->sx.val.i >= 32768) {
 958                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 959                                 M_IOR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 960                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 961                         }
 962                         else {
 963                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 964                         }
 965                         {
 966                                 int b=0, m = iptr->sx.val.i;
 967                                 while (m >>= 1)
 968                                         ++b;
 969                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 970                         }
 971                         M_ISUB(s1, REG_ITMP2, d);
 972                         emit_store_dst(jd, iptr, d);
 973                         break;
 974
 975                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 976
 977                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 978                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 979                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 980                         M_IOR(s1, s2, d);
 981                         emit_store_dst(jd, iptr, d);
 982                         break;
 983
 984                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
 985                                       /* sx.val.i = constant                          */
 986
 987                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 988                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 989                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 990                                 M_IOR_IMM(s1, iptr->sx.val.i, d);
 991                         else {
 992                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 993                                 M_IOR(s1, REG_ITMP3, d);
 994                         }
 995                         emit_store_dst(jd, iptr, d);
 996                         break;
 997
 998                 case ICMD_LOR:       /* ..., val1, val2  ==> ..., val1 | val2        */
 999
1000                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1001                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1002                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1003                         M_IOR(s1, s2, GET_LOW_REG(d));
1004                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1005                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1006                         M_IOR(s1, s2, GET_HIGH_REG(d));
1007                         emit_store_dst(jd, iptr, d);
1008                         break;
1009
1010                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
1011                                       /* sx.val.l = constant                          */
1012
1013                         s3 = iptr->sx.val.l & 0xffffffff;
1014                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1015                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1016                         if ((s3 >= 0) && (s3 <= 65535))
1017                                 M_IOR_IMM(s1, s3, GET_LOW_REG(d));
1018                         else {
1019                                 ICONST(REG_ITMP3, s3);
1020                                 M_IOR(s1, REG_ITMP3, GET_LOW_REG(d));
1021                         }
1022                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1023                         s3 = iptr->sx.val.l >> 32;
1024                         if ((s3 >= 0) && (s3 <= 65535))
1025                                 M_IOR_IMM(s1, s3, GET_HIGH_REG(d));
1026                         else {
1027                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1028                                 M_IOR(s1, REG_ITMP3, GET_HIGH_REG(d));
1029                         }
1030                         emit_store_dst(jd, iptr, d);
1031                         break;
1032
1033                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1034
1035                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1036                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1037                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1038                         M_XOR(s1, s2, d);
1039                         emit_store_dst(jd, iptr, d);
1040                         break;
1041
1042                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1043                                       /* sx.val.i = constant                          */
1044
1045                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1046                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1047                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1048                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1049                         else {
1050                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1051                                 M_XOR(s1, REG_ITMP3, d);
1052                         }
1053                         emit_store_dst(jd, iptr, d);
1054                         break;
1055
1056                 case ICMD_LXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1057
1058                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1059                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1060                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1061                         M_XOR(s1, s2, GET_LOW_REG(d));
1062                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1063                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1064                         M_XOR(s1, s2, GET_HIGH_REG(d));
1065                         emit_store_dst(jd, iptr, d);
1066                         break;
1067
1068                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1069                                       /* sx.val.l = constant                          */
1070
1071                         s3 = iptr->sx.val.l & 0xffffffff;
1072                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1073                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1074                         if ((s3 >= 0) && (s3 <= 65535))
1075                                 M_XOR_IMM(s1, s3, GET_LOW_REG(d));
1076                         else {
1077                                 ICONST(REG_ITMP3, s3);
1078                                 M_XOR(s1, REG_ITMP3, GET_LOW_REG(d));
1079                         }
1080                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1081                         s3 = iptr->sx.val.l >> 32;
1082                         if ((s3 >= 0) && (s3 <= 65535))
1083                                 M_XOR_IMM(s1, s3, GET_HIGH_REG(d));
1084                         else {
1085                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1086                                 M_XOR(s1, REG_ITMP3, GET_HIGH_REG(d));
1087                         }
1088                         emit_store_dst(jd, iptr, d);
1089                         break;
1090
1091                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1092
1093                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
1094                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1095                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1096                         vm_abort("codegen: implement ICMD_LCMP!");
1097                         emit_store_dst(jd, iptr, d);
1098                         break;
1099
1100
1101                 /* floating operations ************************************************/
1102
1103                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1104
1105                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1106                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1107                         M_FMOVN(s1, d);
1108                         emit_store_dst(jd, iptr, d);
1109                         break;
1110
1111                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1112
1113                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1114                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1115                         M_FMOVN(s1, d);
1116                         emit_store_dst(jd, iptr, d);
1117                         break;
1118
1119                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1120
1121                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1122                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1123                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1124                         M_FADD(s1, s2, d);
1125                         emit_store_dst(jd, iptr, d);
1126                         break;
1127
1128                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1129
1130                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1131                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1132                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1133                         M_DADD(s1, s2, d);
1134                         emit_store_dst(jd, iptr, d);
1135                         break;
1136
1137                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1138
1139                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1140                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1141                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1142                         M_FSUB(s1, s2, d);
1143                         emit_store_dst(jd, iptr, d);
1144                         break;
1145
1146                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1147
1148                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1149                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1150                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1151                         M_DSUB(s1, s2, d);
1152                         emit_store_dst(jd, iptr, d);
1153                         break;
1154
1155                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1156
1157                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1158                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1159                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1160                         M_FMUL(s1, s2, d);
1161                         emit_store_dst(jd, iptr, d);
1162                         break;
1163
1164                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1165
1166                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1167                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1168                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1169                         M_DMUL(s1, s2, d);
1170                         emit_store_dst(jd, iptr, d);
1171                         break;
1172
1173                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1174
1175                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1176                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1177                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1178                         M_FDIV(s1, s2, d);
1179                         emit_store_dst(jd, iptr, d);
1180                         break;
1181
1182                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1183
1184                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1185                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1186                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1187                         M_DDIV(s1, s2, d);
1188                         emit_store_dst(jd, iptr, d);
1189                         break;
1190
1191                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1192                 case ICMD_D2I:
1193
1194                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1195                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1196                         M_CLR(d);
1197                         disp = dseg_add_float(cd, 0.0);
1198                         M_FLD(REG_FTMP2, REG_PV, disp);
1199                         M_FCMPU(s1, REG_FTMP2);
1200                         M_BNAN(4);
1201                         disp = dseg_add_unique_s4(cd, 0);
1202                         M_CVTDL_C(s1, REG_FTMP1);
1203                         M_LDA(REG_ITMP1, REG_PV, disp);
1204                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1205                         M_ILD(d, REG_PV, disp);
1206                         emit_store_dst(jd, iptr, d);
1207                         break;
1208
1209                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1210
1211                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1212                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1213                         M_FLTMOVE(s1, d);
1214                         emit_store_dst(jd, iptr, d);
1215                         break;
1216
1217                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1218
1219                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1220                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1221                         M_CVTDF(s1, d);
1222                         emit_store_dst(jd, iptr, d);
1223                         break;
1224
1225                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1226                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1227
1228                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1229                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1230                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1231                         M_FCMPU(s2, s1);
1232                         M_IADD_IMM(REG_ZERO, -1, d);
1233                         M_BNAN(4);
1234                         M_BGT(3);
1235                         M_IADD_IMM(REG_ZERO, 0, d);
1236                         M_BGE(1);
1237                         M_IADD_IMM(REG_ZERO, 1, d);
1238                         emit_store_dst(jd, iptr, d);
1239                         break;
1240
1241                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1242                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1243
1244                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1245                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1246                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1247                         M_FCMPU(s1, s2);
1248                         M_IADD_IMM(REG_ZERO, 1, d);
1249                         M_BNAN(4);
1250                         M_BGT(3);
1251                         M_IADD_IMM(REG_ZERO, 0, d);
1252                         M_BGE(1);
1253                         M_IADD_IMM(REG_ZERO, -1, d);
1254                         emit_store_dst(jd, iptr, d);
1255                         break;
1256
1257
1258                 /* memory operations **************************************************/
1259
1260                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1261
1262                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1263                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1264                         /* implicit null-pointer check */
1265                         M_ILD(d, s1, OFFSET(java_array_t, size));
1266                         emit_store_dst(jd, iptr, d);
1267                         break;
1268
1269                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1270
1271                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1272                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1273                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1274                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1275                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1276                         /* implicit null-pointer check */
1277                         M_LBZX(d, s1, REG_ITMP2);
1278                         M_BSEXT(d, d);
1279                         emit_store_dst(jd, iptr, d);
1280                         break;
1281
1282                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1283
1284                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1285                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1286                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1287                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1288                         M_SLL_IMM(s2, 1, REG_ITMP2);
1289                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1290                         /* implicit null-pointer check */
1291                         M_LHZX(d, s1, REG_ITMP2);
1292                         emit_store_dst(jd, iptr, d);
1293                         break;
1294
1295                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1296
1297                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1298                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1299                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1300                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1301                         M_SLL_IMM(s2, 1, REG_ITMP2);
1302                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1303                         /* implicit null-pointer check */
1304                         M_LHAX(d, s1, REG_ITMP2);
1305                         emit_store_dst(jd, iptr, d);
1306                         break;
1307
1308                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1309
1310                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1311                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1312                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1313                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1314                         M_SLL_IMM(s2, 2, REG_ITMP2);
1315                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1316                         /* implicit null-pointer check */
1317                         M_LWZX(d, s1, REG_ITMP2);
1318                         emit_store_dst(jd, iptr, d);
1319                         break;
1320
1321                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1322
1323                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1324                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1325                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1326                         /* implicit null-pointer check */
1327                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1328                         M_SLL_IMM(s2, 3, REG_ITMP2);
1329                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1330                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray_t, data[0]));
1331                         emit_store_dst(jd, iptr, d);
1332                         break;
1333
1334                 case ICMD_FALOAD:     /* ..., arrayref, index  ==> ..., value         */
1335
1336                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1337                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1338                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1339                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1340                         M_SLL_IMM(s2, 2, REG_ITMP2);
1341                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1342                         /* implicit null-pointer check */
1343                         M_LFSX(d, s1, REG_ITMP2);
1344                         emit_store_dst(jd, iptr, d);
1345                         break;
1346
1347                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1348
1349                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1350                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1351                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1352                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1353                         M_SLL_IMM(s2, 3, REG_ITMP2);
1354                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1355                         /* implicit null-pointer check */
1356                         M_LFDX(d, s1, REG_ITMP2);
1357                         emit_store_dst(jd, iptr, d);
1358                         break;
1359
1360                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1361
1362                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1363                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1364                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1365                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1366                         M_SLL_IMM(s2, 2, REG_ITMP2);
1367                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1368                         /* implicit null-pointer check */
1369                         M_LWZX(d, s1, REG_ITMP2);
1370                         emit_store_dst(jd, iptr, d);
1371                         break;
1372
1373
1374                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1375
1376                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1377                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1378                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1379                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1380                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1381                         /* implicit null-pointer check */
1382                         M_STBX(s3, s1, REG_ITMP2);
1383                         break;
1384
1385                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1386
1387                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1388                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1389                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1390                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1391                         M_SLL_IMM(s2, 1, REG_ITMP2);
1392                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1393                         /* implicit null-pointer check */
1394                         M_STHX(s3, s1, REG_ITMP2);
1395                         break;
1396
1397                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1398
1399                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1400                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1401                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1402                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1403                         M_SLL_IMM(s2, 1, REG_ITMP2);
1404                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1405                         /* implicit null-pointer check */
1406                         M_STHX(s3, s1, REG_ITMP2);
1407                         break;
1408
1409                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1410
1411                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1412                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1413                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1414                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1415                         M_SLL_IMM(s2, 2, REG_ITMP2);
1416                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1417                         /* implicit null-pointer check */
1418                         M_STWX(s3, s1, REG_ITMP2);
1419                         break;
1420
1421                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1422
1423                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1424                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1425                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1426                         s3 = emit_load_s3_high(jd, iptr, REG_ITMP3);
1427                         M_SLL_IMM(s2, 3, REG_ITMP2);
1428                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray_t, data[0]), REG_ITMP2);
1429                         /* implicit null-pointer check */
1430                         M_STWX(s3, s1, REG_ITMP2);
1431                         M_IADD_IMM(REG_ITMP2, 4, REG_ITMP2);
1432                         s3 = emit_load_s3_low(jd, iptr, REG_ITMP3);
1433                         M_STWX(s3, s1, REG_ITMP2);
1434                         break;
1435
1436                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1437
1438                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1439                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1440                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1441                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1442                         M_SLL_IMM(s2, 2, REG_ITMP2);
1443                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1444                         /* implicit null-pointer check */
1445                         M_STFSX(s3, s1, REG_ITMP2);
1446                         break;
1447
1448                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1449
1450                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1451                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1452                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1453                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1454                         M_SLL_IMM(s2, 3, REG_ITMP2);
1455                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1456                         /* implicit null-pointer check */
1457                         M_STFDX(s3, s1, REG_ITMP2);
1458                         break;
1459
1460                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1461
1462                         s1 = emit_load_s1(jd, iptr, REG_A0);
1463                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1464                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1465                         s3 = emit_load_s3(jd, iptr, REG_A1);
1466
1467                         /* XXX what if array is NULL */
1468                         disp = dseg_add_functionptr(cd, BUILTIN_FAST_canstore);
1469                         M_ALD(REG_ITMP3, REG_PV, disp);
1470                         M_MTCTR(REG_ITMP3);
1471
1472                         M_INTMOVE(s1, REG_A0);
1473                         M_INTMOVE(s3, REG_A1);
1474
1475                         M_JSR;
1476                         emit_arraystore_check(cd, iptr);
1477
1478                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1479                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1480                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1481                         M_SLL_IMM(s2, 2, REG_ITMP2);
1482                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1483                         /* implicit null-pointer check */
1484                         M_STWX(s3, s1, REG_ITMP2);
1485                         break;
1486
1487
1488                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1489
1490                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1491                                 uf        = iptr->sx.s23.s3.uf;
1492                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1493                                 disp      = dseg_add_unique_address(cd, uf);
1494
1495                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
1496                         }
1497                         else {
1498                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1499                                 fieldtype = fi->type;
1500                                 disp      = dseg_add_address(cd, fi->value);
1501
1502                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->clazz))
1503                                         patcher_add_patch_ref(jd, PATCHER_initialize_class,
1504                                                                                 fi->clazz, disp);
1505                         }
1506
1507                         M_ALD(REG_ITMP1, REG_PV, disp);
1508                         switch (fieldtype) {
1509                         case TYPE_INT:
1510                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1511                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1512                                 break;
1513                         case TYPE_LNG:
1514                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1515                                 M_ILD_INTERN(GET_LOW_REG(d), REG_ITMP1, 4);/* keep this order */
1516                                 M_ILD_INTERN(GET_HIGH_REG(d), REG_ITMP1, 0);/*keep this order */
1517                                 break;
1518                         case TYPE_ADR:
1519                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1520                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1521                                 break;
1522                         case TYPE_FLT:
1523                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1524                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1525                                 break;
1526                         case TYPE_DBL:
1527                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1528                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1529                                 break;
1530                         }
1531                         emit_store_dst(jd, iptr, d);
1532                         break;
1533
1534                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1535
1536                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1537                                 uf        = iptr->sx.s23.s3.uf;
1538                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1539                                 disp      = dseg_add_unique_address(cd, uf);
1540
1541                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
1542                         }
1543                         else {
1544                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1545                                 fieldtype = fi->type;
1546                                 disp      = dseg_add_address(cd, fi->value);
1547
1548                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->clazz))
1549                                         patcher_add_patch_ref(jd, PATCHER_initialize_class,
1550                                                                                 fi->clazz, disp);
1551                         }
1552
1553                         M_ALD(REG_ITMP1, REG_PV, disp);
1554                         switch (fieldtype) {
1555                         case TYPE_INT:
1556                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1557                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1558                                 break;
1559                         case TYPE_LNG:
1560                                 s1 = emit_load_s1(jd, iptr, REG_ITMP23_PACKED);
1561                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1562                                 break;
1563                         case TYPE_ADR:
1564                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1565                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1566                                 break;
1567                         case TYPE_FLT:
1568                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1569                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1570                                 break;
1571                         case TYPE_DBL:
1572                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1573                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1574                                 break;
1575                         }
1576                         break;
1577
1578
1579                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1580
1581                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1582
1583                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1584                                 uf        = iptr->sx.s23.s3.uf;
1585                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1586                                 disp      = 0;
1587
1588                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1589                         }
1590                         else {
1591                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1592                                 fieldtype = fi->type;
1593                                 disp      = fi->offset;
1594                         }
1595
1596                         /* implicit null-pointer check */
1597                         switch (fieldtype) {
1598                         case TYPE_INT:
1599                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1600                                 M_ILD(d, s1, disp);
1601                                 break;
1602                         case TYPE_LNG:
1603                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1604                                 if (GET_HIGH_REG(d) == s1) {
1605                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1606                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1607                                 }
1608                                 else {
1609                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1610                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1611                                 }
1612                                 break;
1613                         case TYPE_ADR:
1614                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1615                                 M_ALD(d, s1, disp);
1616                                 break;
1617                         case TYPE_FLT:
1618                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1619                                 M_FLD(d, s1, disp);
1620                                 break;
1621                         case TYPE_DBL:
1622                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1623                                 M_DLD(d, s1, disp);
1624                                 break;
1625                         }
1626                         emit_store_dst(jd, iptr, d);
1627                         break;
1628
1629                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1630
1631                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1632
1633                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1634                                 uf        = iptr->sx.s23.s3.uf;
1635                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1636                                 disp      = 0;
1637                         }
1638                         else {
1639                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1640                                 fieldtype = fi->type;
1641                                 disp      = fi->offset;
1642                         }
1643
1644                         if (IS_INT_LNG_TYPE(fieldtype)) {
1645                                 if (IS_2_WORD_TYPE(fieldtype))
1646                                         s2 = emit_load_s2(jd, iptr, REG_ITMP23_PACKED);
1647                                 else
1648                                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1649                         }
1650                         else
1651                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1652
1653                         if (INSTRUCTION_IS_UNRESOLVED(iptr))
1654                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1655
1656                         /* implicit null-pointer check */
1657                         switch (fieldtype) {
1658                         case TYPE_INT:
1659                                 M_IST(s2, s1, disp);
1660                                 break;
1661                         case TYPE_LNG:
1662                                 M_IST(GET_LOW_REG(s2), s1, disp + 4);      /* keep this order */
1663                                 M_IST(GET_HIGH_REG(s2), s1, disp);         /* keep this order */
1664                                 break;
1665                         case TYPE_ADR:
1666                                 M_AST(s2, s1, disp);
1667                                 break;
1668                         case TYPE_FLT:
1669                                 M_FST(s2, s1, disp);
1670                                 break;
1671                         case TYPE_DBL:
1672                                 M_DST(s2, s1, disp);
1673                                 break;
1674                         }
1675                         break;
1676
1677
1678                 /* branch operations **************************************************/
1679
1680                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1681
1682                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1683                         M_INTMOVE(s1, REG_ITMP1_XPTR);
1684
1685 #ifdef ENABLE_VERIFIER
1686                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1687                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
1688
1689                                 patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
1690                         }
1691 #endif /* ENABLE_VERIFIER */
1692
1693                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1694                         M_ALD(REG_ITMP2, REG_PV, disp);
1695                         M_MTCTR(REG_ITMP2);
1696
1697                         if (code_is_leafmethod(code))
1698                                 M_MFLR(REG_ITMP3);                          /* save LR        */
1699
1700                         M_BL(0);                                        /* get current PC */
1701                         M_MFLR(REG_ITMP2_XPC);
1702
1703                         if (code_is_leafmethod(code))
1704                                 M_MTLR(REG_ITMP3);                          /* restore LR     */
1705
1706                         M_RTS;                                          /* jump to CTR    */
1707                         ALIGNCODENOP;
1708                         break;
1709
1710                 case ICMD_GOTO:         /* ... ==> ...                                */
1711                 case ICMD_RET:          /* ... ==> ...                                */
1712
1713                         emit_br(cd, iptr->dst.block);
1714                         ALIGNCODENOP;
1715                         break;
1716
1717                 case ICMD_JSR:          /* ... ==> ...                                */
1718
1719                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1720                         ALIGNCODENOP;
1721                         break;
1722
1723                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1724                 case ICMD_IFNONNULL:
1725
1726                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1727                         M_TST(s1);
1728                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFNULL, BRANCH_OPT_NONE);
1729                         break;
1730
1731                 case ICMD_IFLT:
1732                 case ICMD_IFLE:
1733                 case ICMD_IFNE:
1734                 case ICMD_IFGT:
1735                 case ICMD_IFGE:
1736                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1737
1738                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1739                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1740                                 M_CMPI(s1, iptr->sx.val.i);
1741                         else {
1742                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1743                                 M_CMP(s1, REG_ITMP2);
1744                         }
1745                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1746                         break;
1747
1748
1749                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1750
1751                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1752                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1753                         if (iptr->sx.val.l == 0) {
1754                                 M_IOR_TST(s1, s2, REG_ITMP3);
1755                         }
1756                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1757                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1758                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1759                                 M_IOR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1760                         }
1761                         else {
1762                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1763                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1764                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1765                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1766                                 M_IOR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1767                         }
1768                         emit_beq(cd, iptr->dst.block);
1769                         break;
1770
1771                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1772
1773                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1774                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1775                         if (iptr->sx.val.l == 0) {
1776                                 /* if high word is less than zero, the whole long is too */
1777                                 M_CMPI(s2, 0);
1778                                 emit_blt(cd, iptr->dst.block);
1779                         }
1780                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1781                                 M_CMPI(s2, 0);
1782                                 emit_blt(cd, iptr->dst.block);
1783                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1784                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1785                                 emit_blt(cd, iptr->dst.block);
1786                                 emit_label(cd, BRANCH_LABEL_1);
1787                         }
1788                         else {
1789                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1790                                 M_CMP(s2, REG_ITMP3);
1791                                 emit_blt(cd, iptr->dst.block);
1792                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1793                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1794                                 M_CMPU(s1, REG_ITMP3);
1795                                 emit_blt(cd, iptr->dst.block);
1796                                 emit_label(cd, BRANCH_LABEL_1);
1797                         }
1798                         break;
1799
1800                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1801
1802                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1803                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1804 /*                      if (iptr->sx.val.l == 0) { */
1805 /*                              M_IOR(s1, s2, REG_ITMP3); */
1806 /*                              M_CMPI(REG_ITMP3, 0); */
1807
1808 /*                      } else  */
1809                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1810                                 M_CMPI(s2, 0);
1811                                 emit_blt(cd, iptr->dst.block);
1812                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1813                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1814                         }
1815                         else {
1816                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1817                                 M_CMP(s2, REG_ITMP3);
1818                                 emit_blt(cd, iptr->dst.block);
1819                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1820                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1821                                 M_CMPU(s1, REG_ITMP3);
1822                         }
1823                         emit_ble(cd, iptr->dst.block);
1824                         emit_label(cd, BRANCH_LABEL_1);
1825                         break;
1826
1827                 case ICMD_IF_LNE:       /* ..., value ==> ...                         */
1828
1829                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1830                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1831                         if (iptr->sx.val.l == 0) {
1832                                 M_IOR_TST(s1, s2, REG_ITMP3);
1833                         }
1834                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1835                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1836                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1837                                 M_IOR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1838                         }
1839                         else {
1840                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1841                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1842                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1843                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1844                                 M_IOR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1845                         }
1846                         emit_bne(cd, iptr->dst.block);
1847                         break;
1848
1849                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1850
1851                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1852                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1853 /*                      if (iptr->sx.val.l == 0) { */
1854 /*                              M_IOR(s1, s2, REG_ITMP3); */
1855 /*                              M_CMPI(REG_ITMP3, 0); */
1856
1857 /*                      } else  */
1858                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1859                                 M_CMPI(s2, 0);
1860                                 emit_bgt(cd, iptr->dst.block);
1861                                 emit_label_blt(cd, BRANCH_LABEL_1);
1862                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1863                         }
1864                         else {
1865                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1866                                 M_CMP(s2, REG_ITMP3);
1867                                 emit_bgt(cd, iptr->dst.block);
1868                                 emit_label_blt(cd, BRANCH_LABEL_1);
1869                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1870                                 M_CMPU(s1, REG_ITMP3);
1871                         }
1872                         emit_bgt(cd, iptr->dst.block);
1873                         emit_label(cd, BRANCH_LABEL_1);
1874                         break;
1875
1876                 case ICMD_IF_LGE:       /* ..., value ==> ...                         */
1877
1878                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1879                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1880                         if (iptr->sx.val.l == 0) {
1881                                 /* if high word is greater equal zero, the whole long is too */
1882                                 M_CMPI(s2, 0);
1883                                 emit_bge(cd, iptr->dst.block);
1884                         }
1885                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1886                                 M_CMPI(s2, 0);
1887                                 emit_bgt(cd, iptr->dst.block);
1888                                 emit_label_blt(cd, BRANCH_LABEL_1);
1889                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1890                                 emit_bge(cd, iptr->dst.block);
1891                                 emit_label(cd, BRANCH_LABEL_1);
1892                         }
1893                         else {
1894                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1895                                 M_CMP(s2, REG_ITMP3);
1896                                 emit_bgt(cd, iptr->dst.block);
1897                                 emit_label_blt(cd, BRANCH_LABEL_1);
1898                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1899                                 M_CMPU(s1, REG_ITMP3);
1900                                 emit_bge(cd, iptr->dst.block);
1901                                 emit_label(cd, BRANCH_LABEL_1);
1902                         }
1903                         break;
1904
1905                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
1906                 case ICMD_IF_ICMPNE:
1907                 case ICMD_IF_ICMPLT:
1908                 case ICMD_IF_ICMPGT:
1909                 case ICMD_IF_ICMPLE:
1910                 case ICMD_IF_ICMPGE:
1911
1912                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1913                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1914                         M_CMP(s1, s2);
1915                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ICMPEQ, BRANCH_OPT_NONE);
1916                         break;
1917
1918                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
1919                 case ICMD_IF_ACMPNE:
1920
1921                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1922                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1923                         M_CMP(s1, s2);
1924                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ACMPEQ, BRANCH_OPT_NONE);
1925                         break;
1926
1927                 case ICMD_IF_LCMPEQ:    /* ..., value, value ==> ...                  */
1928
1929                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1930                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1931                         M_CMP(s1, s2);
1932                         emit_label_bne(cd, BRANCH_LABEL_1);
1933                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1934                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1935                         M_CMP(s1, s2);
1936                         emit_beq(cd, iptr->dst.block);
1937                         emit_label(cd, BRANCH_LABEL_1);
1938                         break;
1939
1940                 case ICMD_IF_LCMPNE:    /* ..., value, value ==> ...                  */
1941
1942                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1943                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1944                         M_CMP(s1, s2);
1945                         emit_bne(cd, iptr->dst.block);
1946                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1947                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1948                         M_CMP(s1, s2);
1949                         emit_bne(cd, iptr->dst.block);
1950                         break;
1951
1952                 case ICMD_IF_LCMPLT:    /* ..., value, value ==> ...                  */
1953
1954                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1955                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1956                         M_CMP(s1, s2);
1957                         emit_blt(cd, iptr->dst.block);
1958                         emit_label_bgt(cd, BRANCH_LABEL_1);
1959                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1960                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1961                         M_CMPU(s1, s2);
1962                         emit_blt(cd, iptr->dst.block);
1963                         emit_label(cd, BRANCH_LABEL_1);
1964                         break;
1965
1966                 case ICMD_IF_LCMPGT:    /* ..., value, value ==> ...                  */
1967
1968                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1969                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1970                         M_CMP(s1, s2);
1971                         emit_bgt(cd, iptr->dst.block);
1972                         emit_label_blt(cd, BRANCH_LABEL_1);
1973                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1974                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1975                         M_CMPU(s1, s2);
1976                         emit_bgt(cd, iptr->dst.block);
1977                         emit_label(cd, BRANCH_LABEL_1);
1978                         break;
1979
1980                 case ICMD_IF_LCMPLE:    /* ..., value, value ==> ...                  */
1981
1982                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1983                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1984                         M_CMP(s1, s2);
1985                         emit_blt(cd, iptr->dst.block);
1986                         emit_label_bgt(cd, BRANCH_LABEL_1);
1987                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1988                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1989                         M_CMPU(s1, s2);
1990                         emit_ble(cd, iptr->dst.block);
1991                         emit_label(cd, BRANCH_LABEL_1);
1992                         break;
1993
1994                 case ICMD_IF_LCMPGE:    /* ..., value, value ==> ...                  */
1995
1996                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1997                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1998                         M_CMP(s1, s2);
1999                         emit_bgt(cd, iptr->dst.block);
2000                         emit_label_blt(cd, BRANCH_LABEL_1);
2001                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2002                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2003                         M_CMPU(s1, s2);
2004                         emit_bge(cd, iptr->dst.block);
2005                         emit_label(cd, BRANCH_LABEL_1);
2006                         break;
2007
2008                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
2009
2010                         REPLACEMENT_POINT_RETURN(cd, iptr);
2011                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2012                         M_INTMOVE(s1, REG_RESULT);
2013                         goto nowperformreturn;
2014
2015                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
2016
2017                         REPLACEMENT_POINT_RETURN(cd, iptr);
2018                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2019                         M_INTMOVE(s1, REG_RESULT);
2020
2021 #ifdef ENABLE_VERIFIER
2022                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2023                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
2024
2025                                 patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
2026                         }
2027 #endif /* ENABLE_VERIFIER */
2028                         goto nowperformreturn;
2029
2030                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
2031
2032                         REPLACEMENT_POINT_RETURN(cd, iptr);
2033                         s1 = emit_load_s1(jd, iptr, REG_RESULT_PACKED);
2034                         M_LNGMOVE(s1, REG_RESULT_PACKED);
2035                         goto nowperformreturn;
2036
2037                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
2038                 case ICMD_DRETURN:
2039
2040                         REPLACEMENT_POINT_RETURN(cd, iptr);
2041                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
2042                         M_FLTMOVE(s1, REG_FRESULT);
2043                         goto nowperformreturn;
2044
2045                 case ICMD_RETURN:      /* ...  ==> ...                                */
2046
2047                         REPLACEMENT_POINT_RETURN(cd, iptr);
2048
2049 nowperformreturn:
2050                         {
2051                         s4 i, p;
2052
2053                         p = cd->stackframesize;
2054
2055                         /* call trace function */
2056
2057                         emit_verbosecall_exit(jd);
2058
2059 #if defined(ENABLE_THREADS)
2060                         if (checksync && code_is_synchronized(code)) {
2061                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
2062                                 M_ALD(REG_ITMP3, REG_PV, disp);
2063                                 M_MTCTR(REG_ITMP3);
2064
2065                                 /* we need to save the proper return value */
2066
2067                                 switch (iptr->opc) {
2068                                 case ICMD_LRETURN:
2069                                         M_IST(REG_RESULT2, REG_SP, rd->memuse * 8 + 8);
2070                                         /* fall through */
2071                                 case ICMD_IRETURN:
2072                                 case ICMD_ARETURN:
2073                                         M_IST(REG_RESULT , REG_SP, rd->memuse * 8 + 4);
2074                                         break;
2075                                 case ICMD_FRETURN:
2076                                 case ICMD_DRETURN:
2077                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 4);
2078                                         break;
2079                                 }
2080
2081                                 M_ALD(REG_A0, REG_SP, rd->memuse * 8);
2082                                 M_JSR;
2083
2084                                 /* and now restore the proper return value */
2085
2086                                 switch (iptr->opc) {
2087                                 case ICMD_LRETURN:
2088                                         M_ILD(REG_RESULT2, REG_SP, rd->memuse * 8 + 8);
2089                                         /* fall through */
2090                                 case ICMD_IRETURN:
2091                                 case ICMD_ARETURN:
2092                                         M_ILD(REG_RESULT , REG_SP, rd->memuse * 8 + 4);
2093                                         break;
2094                                 case ICMD_FRETURN:
2095                                 case ICMD_DRETURN:
2096                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 4);
2097                                         break;
2098                                 }
2099                         }
2100 #endif
2101
2102                         /* restore return address                                         */
2103
2104                         if (!code_is_leafmethod(code)) {
2105                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
2106                                    may have a displacement overflow. */
2107
2108                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
2109                                 M_MTLR(REG_ITMP1);
2110                         }
2111
2112                         /* restore saved registers                                        */
2113
2114                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
2115                                 p--; M_ILD(rd->savintregs[i], REG_SP, p * 8);
2116                         }
2117                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
2118                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
2119                         }
2120
2121                         /* deallocate stack                                               */
2122
2123                         if (cd->stackframesize)
2124                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
2125
2126                         M_RET;
2127                         ALIGNCODENOP;
2128                         }
2129                         break;
2130
2131
2132                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
2133                         {
2134                         s4 i, l;
2135                         branch_target_t *table;
2136
2137                         table = iptr->dst.table;
2138
2139                         l = iptr->sx.s23.s2.tablelow;
2140                         i = iptr->sx.s23.s3.tablehigh;
2141
2142                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2143                         if (l == 0)
2144                                 M_INTMOVE(s1, REG_ITMP1);
2145                         else if (l <= 32768)
2146                                 M_LDA(REG_ITMP1, s1, -l);
2147                         else {
2148                                 ICONST(REG_ITMP2, l);
2149                                 M_ISUB(s1, REG_ITMP2, REG_ITMP1);
2150                         }
2151
2152                         i = i - l + 1;
2153
2154                         /* range check */
2155
2156                         M_CMPUI(REG_ITMP1, i - 1);
2157                         emit_bgt(cd, table[0].block);
2158
2159                         /* build jump table top down and use address of lowest entry */
2160
2161                         table += i;
2162
2163                         while (--i >= 0) {
2164                                 dseg_add_target(cd, table->block);
2165                                 --table;
2166                         }
2167
2168                         /* length of dataseg after last dseg_add_target is used by load */
2169
2170                         M_SLL_IMM(REG_ITMP1, 2, REG_ITMP1);
2171                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
2172                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
2173                         M_MTCTR(REG_ITMP2);
2174                         M_RTS;
2175                         ALIGNCODENOP;
2176                         }
2177                         break;
2178
2179
2180                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
2181                         {
2182                         s4 i;
2183                         lookup_target_t *lookup;
2184
2185                         lookup = iptr->dst.lookup;
2186
2187                         i = iptr->sx.s23.s2.lookupcount;
2188
2189                         MCODECHECK((i<<2)+8);
2190                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2191
2192                         while (--i >= 0) {
2193                                 if ((lookup->value >= -32768) && (lookup->value <= 32767)) {
2194                                         M_CMPI(s1, lookup->value);
2195                                 }
2196                                 else {
2197                                         disp = dseg_add_s4(cd, lookup->value);
2198                                         M_ILD(REG_ITMP2, REG_PV, disp);
2199                                         M_CMP(s1, REG_ITMP2);
2200                                 }
2201                                 emit_beq(cd, lookup->target.block);
2202                                 lookup++;
2203                         }
2204
2205                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
2206                         ALIGNCODENOP;
2207                         break;
2208                         }
2209
2210
2211                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2212
2213                         REPLACEMENT_POINT_FORGC_BUILTIN(cd, iptr);
2214
2215                         bte = iptr->sx.s23.s3.bte;
2216                         md  = bte->md;
2217                         goto gen_method;
2218
2219                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2220
2221                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2222                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2223                 case ICMD_INVOKEINTERFACE:
2224
2225                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2226
2227                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2228                                 lm = NULL;
2229                                 um = iptr->sx.s23.s3.um;
2230                                 md = um->methodref->parseddesc.md;
2231                         }
2232                         else {
2233                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2234                                 um = NULL;
2235                                 md = lm->parseddesc;
2236                         }
2237
2238 gen_method:
2239                         i = md->paramcount;
2240
2241                         MCODECHECK((i << 1) + 64);
2242
2243                         /* Copy arguments to registers or stack location. */
2244
2245                         for (i = i - 1; i >= 0; i--) {
2246                                 var = VAR(iptr->sx.s23.s2.args[i]);
2247                                 d   = md->params[i].regoff;
2248
2249                                 /* Already pre-allocated? */
2250
2251                                 if (var->flags & PREALLOC)
2252                                         continue;
2253
2254                                 if (!md->params[i].inmemory) {
2255                                         s1 = emit_load(jd, iptr, var, d);
2256
2257                                         switch (var->type) {
2258                                         case TYPE_INT:
2259                                         case TYPE_ADR:
2260                                                 M_INTMOVE(s1, d);
2261                                                 break;
2262
2263                                         case TYPE_LNG:
2264                                                 M_LNGMOVE(s1, d);
2265                                                 break;
2266
2267                                         case TYPE_FLT:
2268                                         case TYPE_DBL:
2269                                                 M_FLTMOVE(s1, d);
2270                                                 break;
2271                                         }
2272                                 }
2273                                 else {
2274                                         switch (var->type) {
2275                                         case TYPE_INT:
2276                                         case TYPE_ADR:
2277                                                 s1 = emit_load(jd, iptr, var, REG_ITMP1);
2278                                                 M_IST(s1, REG_SP, d);
2279                                                 break;
2280
2281                                         case TYPE_LNG:
2282                                                 s1 = emit_load(jd, iptr, var, REG_ITMP12_PACKED);
2283                                                 M_LST(s1, REG_SP, d);
2284                                                 break;
2285
2286                                         case TYPE_FLT:
2287                                         case TYPE_DBL:
2288                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2289                                                 M_DST(s1, REG_SP, d);
2290                                                 break;
2291                                         }
2292                                 }
2293                         }
2294
2295                         switch (iptr->opc) {
2296                         case ICMD_BUILTIN:
2297                                 if (bte->stub == NULL)
2298                                         disp = dseg_add_functionptr(cd, bte->fp);
2299                                 else
2300                                         disp = dseg_add_functionptr(cd, bte->stub);
2301
2302                                 M_ALD(REG_PV, REG_PV, disp);  /* pointer to built-in-function */
2303
2304                                 /* generate the actual call */
2305
2306                                 M_MTCTR(REG_PV);
2307                                 M_JSR;
2308                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2309                                 REPLACEMENT_POINT_FORGC_BUILTIN_RETURN(cd, iptr);
2310                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2311                                 M_MFLR(REG_ITMP1);
2312                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2313                                 break;
2314
2315                         case ICMD_INVOKESPECIAL:
2316                                 emit_nullpointer_check(cd, iptr, REG_A0);
2317                                 /* fall-through */
2318
2319                         case ICMD_INVOKESTATIC:
2320                                 if (lm == NULL) {
2321                                         disp = dseg_add_unique_address(cd, um);
2322
2323                                         patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
2324                                                                                 um, disp);
2325                                 }
2326                                 else
2327                                         disp = dseg_add_address(cd, lm->stubroutine);
2328
2329                                 M_ALD(REG_PV, REG_PV, disp);
2330
2331                                 /* generate the actual call */
2332
2333                                 M_MTCTR(REG_PV);
2334                                 M_JSR;
2335                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2336                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2337                                 M_MFLR(REG_ITMP1);
2338                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2339                                 break;
2340
2341                         case ICMD_INVOKEVIRTUAL:
2342                                 if (lm == NULL) {
2343                                         patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
2344
2345                                         s1 = 0;
2346                                 }
2347                                 else {
2348                                         s1 = OFFSET(vftbl_t, table[0]) +
2349                                                 sizeof(methodptr) * lm->vftblindex;
2350                                 }
2351
2352                                 /* implicit null-pointer check */
2353                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2354                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2355
2356                                 /* generate the actual call */
2357
2358                                 M_MTCTR(REG_PV);
2359                                 M_JSR;
2360                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2361                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2362                                 M_MFLR(REG_ITMP1);
2363                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2364                                 break;
2365
2366                         case ICMD_INVOKEINTERFACE:
2367                                 if (lm == NULL) {
2368                                         patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
2369
2370                                         s1 = 0;
2371                                         s2 = 0;
2372                                 }
2373                                 else {
2374                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2375                                                 sizeof(methodptr*) * lm->clazz->index;
2376
2377                                         s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
2378                                 }
2379
2380                                 /* implicit null-pointer check */
2381                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2382                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2383                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2384
2385                                 /* generate the actual call */
2386
2387                                 M_MTCTR(REG_PV);
2388                                 M_JSR;
2389                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2390                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2391                                 M_MFLR(REG_ITMP1);
2392                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2393                                 break;
2394                         }
2395
2396                         /* Store return value. */
2397
2398                         switch (md->returntype.type) {
2399                         case TYPE_INT:
2400                         case TYPE_ADR:
2401                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2402                                 M_INTMOVE(REG_RESULT, s1);
2403                                 emit_store_dst(jd, iptr, s1);
2404                                 break;
2405
2406                         case TYPE_LNG:
2407                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
2408                                 M_LNGMOVE(REG_RESULT_PACKED, s1);
2409                                 emit_store_dst(jd, iptr, s1);
2410                                 break;
2411
2412                         case TYPE_FLT:
2413                         case TYPE_DBL:
2414                                 s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2415                                 M_FLTMOVE(REG_FRESULT, s1);
2416                                 emit_store_dst(jd, iptr, s1);
2417                                 break;
2418
2419                         case TYPE_VOID:
2420                                 break;
2421                         }
2422                         break;
2423
2424
2425                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2426
2427                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2428                                 /* object type cast-check */
2429
2430                                 classinfo *super;
2431                                 s4         superindex;
2432
2433                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2434                                         super      = NULL;
2435                                         superindex = 0;
2436                                 }
2437                                 else {
2438                                         super      = iptr->sx.s23.s3.c.cls;
2439                                         superindex = super->index;
2440                                 }
2441
2442                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2443                                         CODEGEN_CRITICAL_SECTION_NEW;
2444
2445                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2446
2447                                 /* if class is not resolved, check which code to call */
2448
2449                                 if (super == NULL) {
2450                                         M_TST(s1);
2451                                         emit_label_beq(cd, BRANCH_LABEL_1);
2452
2453                                         disp = dseg_add_unique_s4(cd, 0);         /* super->flags */
2454
2455                                         patcher_add_patch_ref(jd,
2456                                                                                 PATCHER_resolve_classref_to_flags,
2457                                                                                 iptr->sx.s23.s3.c.ref,
2458                                                                                 disp);
2459
2460                                         M_ILD(REG_ITMP2, REG_PV, disp);
2461                                         M_IAND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2462                                         emit_label_beq(cd, BRANCH_LABEL_2);
2463                                 }
2464
2465                                 /* interface checkcast code */
2466
2467                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2468                                         if (super == NULL) {
2469                                                 patcher_add_patch_ref(jd,
2470                                                                                         PATCHER_checkcast_interface,
2471                                                                                         iptr->sx.s23.s3.c.ref,
2472                                                                                         0);
2473                                         }
2474                                         else {
2475                                                 M_TST(s1);
2476                                                 emit_label_beq(cd, BRANCH_LABEL_3);
2477                                         }
2478
2479                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2480                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2481                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2482                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2483
2484                                         M_ALD(REG_ITMP3, REG_ITMP2,
2485                                                   OFFSET(vftbl_t, interfacetable[0]) -
2486                                                   superindex * sizeof(methodptr*));
2487                                         M_TST(REG_ITMP3);
2488                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2489
2490                                         if (super == NULL)
2491                                                 emit_label_br(cd, BRANCH_LABEL_4);
2492                                         else
2493                                                 emit_label(cd, BRANCH_LABEL_3);
2494                                 }
2495
2496                                 /* class checkcast code */
2497
2498                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2499                                         if (super == NULL) {
2500                                                 emit_label(cd, BRANCH_LABEL_2);
2501
2502                                                 disp = dseg_add_unique_address(cd, NULL);
2503
2504                                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2505                                                                                         iptr->sx.s23.s3.c.ref,
2506                                                                                         disp);
2507                                         }
2508                                         else {
2509                                                 disp = dseg_add_address(cd, super->vftbl);
2510
2511                                                 M_TST(s1);
2512                                                 emit_label_beq(cd, BRANCH_LABEL_5);
2513                                         }
2514
2515                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2516
2517                                         CODEGEN_CRITICAL_SECTION_START;
2518
2519                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2520                                         M_ALD(REG_ITMP2, REG_PV, disp);
2521                                         if (s1 != REG_ITMP1) {
2522                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2523                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2524
2525                                                 CODEGEN_CRITICAL_SECTION_END;
2526
2527                                                 M_ISUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2528                                         }
2529                                         else {
2530                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2531                                                 M_ISUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2532                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2533                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2534
2535                                                 CODEGEN_CRITICAL_SECTION_END;
2536                                         }
2537                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2538                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2539
2540                                         if (super != NULL)
2541                                                 emit_label(cd, BRANCH_LABEL_5);
2542                                 }
2543
2544                                 if (super == NULL) {
2545                                         emit_label(cd, BRANCH_LABEL_1);
2546                                         emit_label(cd, BRANCH_LABEL_4);
2547                                 }
2548
2549                                 d = codegen_reg_of_dst(jd, iptr, s1);
2550                         }
2551                         else {
2552                                 /* array type cast-check */
2553
2554                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2555                                 M_INTMOVE(s1, REG_A0);
2556
2557                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2558                                         disp = dseg_add_unique_address(cd, NULL);
2559
2560                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2561                                                                                 iptr->sx.s23.s3.c.ref,
2562                                                                                 disp);
2563                                 }
2564                                 else
2565                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2566
2567                                 M_ALD(REG_A1, REG_PV, disp);
2568                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2569                                 M_ALD(REG_ITMP2, REG_PV, disp);
2570                                 M_MTCTR(REG_ITMP2);
2571                                 M_JSR;
2572                                 M_TST(REG_RESULT);
2573                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2574
2575                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2576                                 d = codegen_reg_of_dst(jd, iptr, s1);
2577                         }
2578                         M_INTMOVE(s1, d);
2579                         emit_store_dst(jd, iptr, d);
2580                         break;
2581
2582                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2583
2584                         {
2585                         classinfo *super;
2586                         s4         superindex;
2587
2588                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2589                                 super      = NULL;
2590                                 superindex = 0;
2591                         }
2592                         else {
2593                                 super      = iptr->sx.s23.s3.c.cls;
2594                                 superindex = super->index;
2595                         }
2596
2597                         if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2598                                 CODEGEN_CRITICAL_SECTION_NEW;
2599
2600                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2601
2602                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2603                         if (s1 == d) {
2604                                 M_MOV(s1, REG_ITMP1);
2605                                 s1 = REG_ITMP1;
2606                         }
2607
2608                         M_CLR(d);
2609
2610                         /* if class is not resolved, check which code to call */
2611
2612                         if (super == NULL) {
2613                                 M_TST(s1);
2614                                 emit_label_beq(cd, BRANCH_LABEL_1);
2615
2616                                 disp = dseg_add_unique_s4(cd, 0);             /* super->flags */
2617
2618                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
2619                                                                         iptr->sx.s23.s3.c.ref, disp);
2620
2621                                 M_ILD(REG_ITMP3, REG_PV, disp);
2622                                 M_IAND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2623                                 emit_label_beq(cd, BRANCH_LABEL_2);
2624                         }
2625
2626                         /* interface instanceof code */
2627
2628                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2629                                 if (super == NULL) {
2630                                         patcher_add_patch_ref(jd,
2631                                                                                 PATCHER_instanceof_interface,
2632                                                                                 iptr->sx.s23.s3.c.ref, 0);
2633                                 }
2634                                 else {
2635                                         M_TST(s1);
2636                                         emit_label_beq(cd, BRANCH_LABEL_3);
2637                                 }
2638
2639                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2640                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2641                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2642                                 M_BLE(4);
2643                                 M_ALD(REG_ITMP1, REG_ITMP1,
2644                                           OFFSET(vftbl_t, interfacetable[0]) -
2645                                           superindex * sizeof(methodptr*));
2646                                 M_TST(REG_ITMP1);
2647                                 M_BEQ(1);
2648                                 M_IADD_IMM(REG_ZERO, 1, d);
2649
2650                                 if (super == NULL)
2651                                         emit_label_br(cd, BRANCH_LABEL_4);
2652                                 else
2653                                         emit_label(cd, BRANCH_LABEL_3);
2654                         }
2655
2656                         /* class instanceof code */
2657
2658                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2659                                 if (super == NULL) {
2660                                         emit_label(cd, BRANCH_LABEL_2);
2661
2662                                         disp = dseg_add_unique_address(cd, NULL);
2663
2664                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2665                                                                                 iptr->sx.s23.s3.c.ref,
2666                                                                                 disp);
2667                                 }
2668                                 else {
2669                                         disp = dseg_add_address(cd, super->vftbl);
2670
2671                                         M_TST(s1);
2672                                         emit_label_beq(cd, BRANCH_LABEL_5);
2673                                 }
2674
2675                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2676                                 M_ALD(REG_ITMP2, REG_PV, disp);
2677
2678                                 CODEGEN_CRITICAL_SECTION_START;
2679
2680                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2681                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2682                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2683
2684                                 CODEGEN_CRITICAL_SECTION_END;
2685
2686                                 M_ISUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2687                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2688                                 M_CLR(d);
2689                                 M_BGT(1);
2690                                 M_IADD_IMM(REG_ZERO, 1, d);
2691
2692                                 if (super != NULL)
2693                                         emit_label(cd, BRANCH_LABEL_5);
2694                         }
2695
2696                         if (super == NULL) {
2697                                 emit_label(cd, BRANCH_LABEL_1);
2698                                 emit_label(cd, BRANCH_LABEL_4);
2699                         }
2700
2701                         emit_store_dst(jd, iptr, d);
2702                         }
2703                         break;
2704
2705                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2706
2707                         /* check for negative sizes and copy sizes to stack if necessary  */
2708
2709                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2710
2711                         for (s1 = iptr->s1.argcount; --s1 >= 0;) {
2712                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2713
2714                                 /* copy SAVEDVAR sizes to stack */
2715
2716                                 /* Already Preallocated? */
2717                                 if (!(var->flags & PREALLOC)) {
2718                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2719 #if defined(__DARWIN__)
2720                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 4);
2721 #else
2722                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + 3) * 4);
2723 #endif
2724                                 }
2725                         }
2726
2727                         /* a0 = dimension count */
2728
2729                         ICONST(REG_A0, iptr->s1.argcount);
2730
2731                         /* is patcher function set? */
2732
2733                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2734                                 disp = dseg_add_unique_address(cd, NULL);
2735
2736                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2737                                                                         iptr->sx.s23.s3.c.ref, disp);
2738                         }
2739                         else
2740                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2741
2742                         /* a1 = arraydescriptor */
2743
2744                         M_ALD(REG_A1, REG_PV, disp);
2745
2746                         /* a2 = pointer to dimensions = stack pointer */
2747
2748 #if defined(__DARWIN__)
2749                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 4);
2750 #else
2751                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 4);
2752 #endif
2753
2754                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2755                         M_ALD(REG_ITMP3, REG_PV, disp);
2756                         M_MTCTR(REG_ITMP3);
2757                         M_JSR;
2758
2759                         /* check for exception before result assignment */
2760
2761                         emit_exception_check(cd, iptr);
2762
2763                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2764                         M_INTMOVE(REG_RESULT, d);
2765                         emit_store_dst(jd, iptr, d);
2766                         break;
2767
2768                 default:
2769                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2770                                                                                    iptr->opc);
2771                         return false;
2772         } /* switch */
2773
2774         } /* for instruction */
2775
2776         } /* if (bptr -> flags >= BBREACHED) */
2777         } /* for basic block */
2778
2779         /* generate traps */
2780
2781         emit_patcher_traps(jd);
2782
2783         /* everything's ok */
2784
2785         return true;
2786 }
2787
2788
2789 /* codegen_emit_stub_native ****************************************************
2790
2791    Emits a stub routine which calls a native method.
2792
2793 *******************************************************************************/
2794
2795 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f, int skipparams)
2796 {
2797         methodinfo  *m;
2798         codeinfo    *code;
2799         codegendata *cd;
2800         methoddesc  *md;
2801         s4           i, j;                 /* count variables                    */
2802         s4           t;
2803         s4           s1, s2;
2804         int          disp;
2805
2806         /* Sanity check. */
2807
2808         assert(f != NULL);
2809
2810         /* Get required compiler data. */
2811
2812         m    = jd->m;
2813         code = jd->code;
2814         cd   = jd->cd;
2815
2816         /* set some variables */
2817
2818         md = m->parseddesc;
2819
2820         /* calculate stackframe size */
2821
2822         cd->stackframesize =
2823                 sizeof(stackframeinfo_t) / SIZEOF_VOID_P +
2824                 sizeof(localref_table) / SIZEOF_VOID_P +
2825                 4 +                            /* 4 stackframeinfo arguments (darwin) */
2826                 nmd->paramcount +
2827                 nmd->memuse;
2828
2829         /* keep stack 16-byte aligned */
2830
2831         ALIGN_2(cd->stackframesize);
2832
2833         /* create method header */
2834
2835         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
2836         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
2837         (void) dseg_add_unique_s4(cd, 0);                      /* IsSync          */
2838         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
2839         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
2840         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
2841
2842         /* generate code */
2843
2844         M_MFLR(REG_ZERO);
2845         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
2846         M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 8));
2847
2848 #if defined(ENABLE_GC_CACAO)
2849         /* Save callee saved integer registers in stackframeinfo (GC may
2850            need to recover them during a collection). */
2851
2852         disp = cd->stackframesize * 8 - sizeof(stackframeinfo_t) +
2853                 OFFSET(stackframeinfo_t, intregs);
2854
2855         for (i = 0; i < INT_SAV_CNT; i++)
2856                 M_AST(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
2857 #endif
2858
2859         /* save integer and float argument registers */
2860
2861         for (i = 0; i < md->paramcount; i++) {
2862                 if (!md->params[i].inmemory) {
2863                         s1 = md->params[i].regoff;
2864
2865                         switch (md->paramtypes[i].type) {
2866                         case TYPE_INT:
2867                         case TYPE_ADR:
2868                                 M_IST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2869                                 break;
2870                         case TYPE_LNG:
2871                                 M_LST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2872                                 break;
2873                         case TYPE_FLT:
2874                         case TYPE_DBL:
2875                                 M_DST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2876                                 break;
2877                         }
2878                 }
2879         }
2880
2881         /* create native stack info */
2882
2883         M_MOV(REG_SP, REG_A0);
2884         M_MOV(REG_PV, REG_A1);
2885         disp = dseg_add_functionptr(cd, codegen_start_native_call);
2886         M_ALD(REG_ITMP1, REG_PV, disp);
2887         M_MTCTR(REG_ITMP1);
2888         M_JSR;
2889
2890         /* remember class argument */
2891
2892         if (m->flags & ACC_STATIC)
2893                 M_MOV(REG_RESULT, REG_ITMP3);
2894
2895         /* restore integer and float argument registers */
2896
2897         for (i = 0; i < md->paramcount; i++) {
2898                 if (!md->params[i].inmemory) {
2899                         s1 = md->params[i].regoff;
2900
2901                         switch (md->paramtypes[i].type) {
2902                         case TYPE_INT:
2903                         case TYPE_ADR:
2904                                 M_ILD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2905                                 break;
2906                         case TYPE_LNG:
2907                                 M_LLD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2908                                 break;
2909                         case TYPE_FLT:
2910                         case TYPE_DBL:
2911                                 M_DLD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2912                                 break;
2913                         }
2914                 }
2915         }
2916
2917         /* copy or spill arguments to new locations */
2918
2919         for (i = md->paramcount - 1, j = i + skipparams; i >= 0; i--, j--) {
2920                 t = md->paramtypes[i].type;
2921
2922                 if (!md->params[i].inmemory) {
2923                         s1 = md->params[i].regoff;
2924                         s2 = nmd->params[j].regoff;
2925
2926                         switch (t) {
2927                         case TYPE_INT:
2928                         case TYPE_ADR:
2929                                 if (!nmd->params[j].inmemory)
2930                                         M_INTMOVE(s1, s2);
2931                                 else
2932                                         M_IST(s1, REG_SP, s2);
2933                                 break;
2934
2935                         case TYPE_LNG:
2936                                 if (!nmd->params[j].inmemory)
2937                                         M_LNGMOVE(s1, s2);
2938                                 else
2939                                         M_LST(s1, REG_SP, s2);
2940                                 break;
2941
2942                         case TYPE_FLT:
2943                         case TYPE_DBL:
2944                                 /* We only copy spilled float arguments, as the float
2945                                    argument registers keep unchanged. */
2946                                 break;
2947                         }
2948                 }
2949                 else {
2950                         s1 = md->params[i].regoff + cd->stackframesize * 8;
2951                         s2 = nmd->params[j].regoff;
2952
2953                         switch (t) {
2954                         case TYPE_INT:
2955                         case TYPE_ADR:
2956                                 M_ILD(REG_ITMP1, REG_SP, s1);
2957                                 M_IST(REG_ITMP1, REG_SP, s2);
2958                                 break;
2959
2960                         case TYPE_LNG:
2961                                 M_LLD(REG_ITMP12_PACKED, REG_SP, s1);
2962                                 M_LST(REG_ITMP12_PACKED, REG_SP, s2);
2963                                 break;
2964
2965                         case TYPE_FLT:
2966                                 M_DLD(REG_FTMP1, REG_SP, s1);
2967                                 M_FST(REG_FTMP1, REG_SP, s2);
2968                                 break;
2969
2970                         case TYPE_DBL:
2971                                 M_DLD(REG_FTMP1, REG_SP, s1);
2972                                 M_DST(REG_FTMP1, REG_SP, s2);
2973                                 break;
2974                         }
2975                 }
2976         }
2977
2978         /* Handle native Java methods. */
2979
2980         if (m->flags & ACC_NATIVE) {
2981                 /* put class into second argument register */
2982
2983                 if (m->flags & ACC_STATIC)
2984                         M_MOV(REG_ITMP3, REG_A1);
2985
2986                 /* put env into first argument register */
2987
2988                 disp = dseg_add_address(cd, _Jv_env);
2989                 M_ALD(REG_A0, REG_PV, disp);
2990         }
2991
2992         /* Call the native function. */
2993
2994         disp = dseg_add_functionptr(cd, f);
2995         M_ALD(REG_ITMP3, REG_PV, disp);
2996         M_MTCTR(REG_ITMP3);
2997         M_JSR;
2998
2999         /* save return value */
3000
3001         switch (md->returntype.type) {
3002         case TYPE_INT:
3003         case TYPE_ADR:
3004                 M_IST(REG_RESULT, REG_SP, LA_SIZE + 2 * 4);
3005                 break;
3006         case TYPE_LNG:
3007                 M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + 2 * 4);
3008                 break;
3009         case TYPE_FLT:
3010         case TYPE_DBL:
3011                 M_DST(REG_FRESULT, REG_SP, LA_SIZE + 2 * 4);
3012                 break;
3013         case TYPE_VOID:
3014                 break;
3015         }
3016
3017         /* remove native stackframe info */
3018
3019         M_MOV(REG_SP, REG_A0);
3020         M_MOV(REG_PV, REG_A1);
3021         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
3022         M_ALD(REG_ITMP1, REG_PV, disp);
3023         M_MTCTR(REG_ITMP1);
3024         M_JSR;
3025         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
3026
3027         /* restore return value */
3028
3029         switch (md->returntype.type) {
3030         case TYPE_INT:
3031         case TYPE_ADR:
3032                 M_ILD(REG_RESULT, REG_SP, LA_SIZE + 2 * 4);
3033                 break;
3034         case TYPE_LNG:
3035                 M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + 2 * 4);
3036                 break;
3037         case TYPE_FLT:
3038         case TYPE_DBL:
3039                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + 2 * 4);
3040                 break;
3041         case TYPE_VOID:
3042                 break;
3043         }
3044
3045 #if defined(ENABLE_GC_CACAO)
3046         /* Restore callee saved integer registers from stackframeinfo (GC
3047            might have modified them during a collection). */
3048
3049         disp = cd->stackframesize * 8 - sizeof(stackframeinfo_t) +
3050                 OFFSET(stackframeinfo_t, intregs);
3051
3052         for (i = 0; i < INT_SAV_CNT; i++)
3053                 M_ALD(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
3054 #endif
3055
3056         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
3057         M_MTLR(REG_ITMP2_XPC);
3058         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe       */
3059
3060         /* check for exception */
3061
3062         M_TST(REG_ITMP1_XPTR);
3063         M_BNE(1);                           /* if no exception then return        */
3064
3065         M_RET;
3066
3067         /* handle exception */
3068
3069         M_IADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
3070
3071         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
3072         M_ALD(REG_ITMP3, REG_PV, disp);
3073         M_MTCTR(REG_ITMP3);
3074         M_RTS;
3075 }
3076
3077
3078 /*
3079  * These are local overrides for various environment variables in Emacs.
3080  * Please do not remove this and leave it at the end of the file, where
3081  * Emacs will automagically detect them.
3082  * ---------------------------------------------------------------------
3083  * Local variables:
3084  * mode: c
3085  * indent-tabs-mode: t
3086  * c-basic-offset: 4
3087  * tab-width: 4
3088  * End:
3089  * vim:noexpandtab:sw=4:ts=4:
3090  */