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 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31 #include <stdio.h>
  32 #include <signal.h>
  33
  34 #include "vm/types.h"
  35
  36 #include "md-abi.h"
  37
  38 #include "vm/jit/powerpc/arch.h"
  39 #include "vm/jit/powerpc/codegen.h"
  40
  41 #include "mm/memory.h"
  42
  43 #include "native/localref.h"
  44 #include "native/native.h"
  45
  46 #include "threads/lock-common.h"
  47
  48 #include "vm/builtin.h"
  49 #include "vm/exceptions.h"
  50 #include "vm/global.h"
  51 #include "vm/stringlocal.h"
  52 #include "vm/vm.h"
  53
  54 #include "vm/jit/abi.h"
  55 #include "vm/jit/abi-asm.h"
  56 #include "vm/jit/asmpart.h"
  57 #include "vm/jit/codegen-common.h"
  58 #include "vm/jit/dseg.h"
  59 #include "vm/jit/emit-common.h"
  60 #include "vm/jit/jit.h"
  61 #include "vm/jit/md.h"
  62 #include "vm/jit/methodheader.h"
  63 #include "vm/jit/parse.h"
  64 #include "vm/jit/patcher-common.h"
  65 #include "vm/jit/reg.h"
  66 #include "vm/jit/replace.h"
  67 #include "vm/jit/stacktrace.h"
  68
  69 #if defined(ENABLE_LSRA)
  70 # include "vm/jit/allocator/lsra.h"
  71 #endif
  72
  73 #include "vmcore/loader.h"
  74 #include "vmcore/options.h"
  75
  76
  77 /* codegen *********************************************************************
  78
  79    Generates machine code.
  80
  81 *******************************************************************************/
  82
  83 bool codegen_emit(jitdata *jd)
  84 {
  85         methodinfo         *m;
  86         codeinfo           *code;
  87         codegendata        *cd;
  88         registerdata       *rd;
  89         s4                  len, s1, s2, s3, d, disp;
  90         ptrint              a;
  91         varinfo            *var;
  92         basicblock         *bptr;
  93         instruction        *iptr;
  94         exception_entry    *ex;
  95         u2                  currentline;
  96         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  97         unresolved_method  *um;
  98         builtintable_entry *bte;
  99         methoddesc         *md;
 100         fieldinfo          *fi;
 101         unresolved_field   *uf;
 102         s4                  fieldtype;
 103         s4                 varindex;
 104
 105         /* get required compiler data */
 106
 107         m    = jd->m;
 108         code = jd->code;
 109         cd   = jd->cd;
 110         rd   = jd->rd;
 111
 112         /* prevent compiler warnings */
 113
 114         d         = 0;
 115         fieldtype = 0;
 116         lm        = NULL;
 117         um        = NULL;
 118         uf        = NULL;
 119         bte       = NULL;
 120
 121         {
 122         s4 i, p, t, l;
 123         s4 savedregs_num;
 124
 125         savedregs_num = 0;
 126
 127         /* space to save used callee saved registers */
 128
 129         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 130         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 131
 132         cd->stackframesize = rd->memuse + savedregs_num;
 133
 134 #if defined(ENABLE_THREADS)
 135         /* Space to save argument of monitor_enter and Return Values to
 136            survive monitor_exit. The stack position for the argument can
 137            not be shared with place to save the return register on PPC,
 138            since both values reside in R3. */
 139
 140         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 141                 cd->stackframesize += 2;
 142 #endif
 143
 144         /* create method header */
 145
 146         /* align stack to 16-bytes */
 147
 148         if (!code_is_leafmethod(code) || JITDATA_HAS_FLAG_VERBOSECALL(jd))
 149                 ALIGN_2(cd->stackframesize);
 150
 151         else if (code_is_leafmethod(code) && (cd->stackframesize == LA_SIZE_IN_POINTERS))
 152                 cd->stackframesize = 0;
 153
 154         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
 155         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
 156
 157 #if defined(ENABLE_THREADS)
 158         /* IsSync contains the offset relative to the stack pointer for the
 159            argument of monitor_exit used in the exception handler. Since the
 160            offset could be zero and give a wrong meaning of the flag it is
 161            offset by one.
 162         */
 163
 164         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 165                 (void) dseg_add_unique_s4(cd, (rd->memuse + 1) * 8);/* IsSync         */
 166         else
 167 #endif
 168                 (void) dseg_add_unique_s4(cd, 0);                  /* IsSync          */
 169
 170         /* REMOVEME: We still need it for exception handling in assembler. */
 171
 172         if (code_is_leafmethod(code))
 173                 (void) dseg_add_unique_s4(cd, 1);
 174         else
 175                 (void) dseg_add_unique_s4(cd, 0);
 176
 177         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave */
 178         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave */
 179
 180         dseg_addlinenumbertablesize(cd);
 181
 182         (void) dseg_add_unique_s4(cd, jd->exceptiontablelength); /* ExTableSize   */
 183
 184         /* create exception table */
 185
 186         for (ex = jd->exceptiontable; ex != NULL; ex = ex->down) {
 187                 dseg_add_target(cd, ex->start);
 188                 dseg_add_target(cd, ex->end);
 189                 dseg_add_target(cd, ex->handler);
 190                 (void) dseg_add_unique_address(cd, ex->catchtype.any);
 191         }
 192
 193 #if defined(ENABLE_PROFILING)
 194         /* generate method profiling code */
 195
 196         if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 197                 /* count frequency */
 198
 199                 M_ALD(REG_ITMP1, REG_PV, CodeinfoPointer);
 200                 M_ALD(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 201                 M_IADD_IMM(REG_ITMP2, 1, REG_ITMP2);
 202                 M_AST(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 203
 204 /*              PROFILE_CYCLE_START; */
 205         }
 206 #endif
 207
 208         /* create stack frame (if necessary) */
 209
 210         if (!code_is_leafmethod(code)) {
 211                 M_MFLR(REG_ZERO);
 212                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 213         }
 214
 215         if (cd->stackframesize)
 216                 M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 8));
 217
 218         /* save return address and used callee saved registers */
 219
 220         p = cd->stackframesize;
 221         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 222                 p--; M_IST(rd->savintregs[i], REG_SP, p * 8);
 223         }
 224         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 225                 p--; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 226         }
 227
 228         /* take arguments out of register or stack frame */
 229
 230         md = m->parseddesc;
 231
 232         for (p = 0, l = 0; p < md->paramcount; p++) {
 233                 t = md->paramtypes[p].type;
 234                 varindex = jd->local_map[l * 5 + t];
 235
 236                 l++;
 237                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 238                         l++;
 239
 240                 if (varindex == UNUSED)
 241                         continue;
 242
 243                 var = VAR(varindex);
 244                 s1  = md->params[p].regoff;
 245
 246                 if (IS_INT_LNG_TYPE(t)) {
 247                         if (!md->params[p].inmemory) {
 248                                 if (!IS_INMEMORY(var->flags)) {
 249                                         if (IS_2_WORD_TYPE(t))
 250                                                 M_LNGMOVE(s1, var->vv.regoff);
 251                                         else
 252                                                 M_INTMOVE(s1, var->vv.regoff);
 253                                 }
 254                                 else {
 255                                         if (IS_2_WORD_TYPE(t))
 256                                                 M_LST(s1, REG_SP, var->vv.regoff);
 257                                         else
 258                                                 M_IST(s1, REG_SP, var->vv.regoff);
 259                                 }
 260                         }
 261                         else {
 262                                 if (!IS_INMEMORY(var->flags)) {
 263                                         if (IS_2_WORD_TYPE(t))
 264                                                 M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 265                                         else
 266                                                 M_ILD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 267                                 }
 268                                 else {
 269 #if 1
 270                                         M_ILD(REG_ITMP1, REG_SP, cd->stackframesize * 8 + s1);
 271                                         M_IST(REG_ITMP1, REG_SP, var->vv.regoff);
 272                                         if (IS_2_WORD_TYPE(t)) {
 273                                                 M_ILD(REG_ITMP1, REG_SP, cd->stackframesize * 8 + s1 + 4);
 274                                                 M_IST(REG_ITMP1, REG_SP, var->vv.regoff + 4);
 275                                         }
 276 #else
 277                                         /* Reuse Memory Position on Caller Stack */
 278                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 279 #endif
 280                                 }
 281                         }
 282                 }
 283                 else {
 284                         if (!md->params[p].inmemory) {
 285                                 if (!IS_INMEMORY(var->flags))
 286                                         M_FLTMOVE(s1, var->vv.regoff);
 287                                 else
 288                                         M_DST(s1, REG_SP, var->vv.regoff);
 289                         }
 290                         else {
 291                                 if (!IS_INMEMORY(var->flags))
 292                                         M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 293                                 else {
 294 #if 1
 295                                         M_DLD(REG_FTMP1, REG_SP, cd->stackframesize * 8 + s1);
 296                                         M_DST(REG_FTMP1, REG_SP, var->vv.regoff);
 297 #else
 298                                         /* Reuse Memory Position on Caller Stack */
 299                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 300 #endif
 301                                 }
 302                         }
 303                 }
 304         }
 305
 306 #if defined(ENABLE_THREADS)
 307         /* call monitorenter function */
 308
 309         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 310                 /* stack offset for monitor argument */
 311
 312                 s1 = rd->memuse;
 313
 314 # if !defined(NDEBUG)
 315                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 316                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 317
 318                         for (p = 0; p < INT_ARG_CNT; p++)
 319                                 M_IST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 320
 321                         for (p = 0; p < FLT_ARG_CNT; p++)
 322                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 323
 324                         s1 += LA_SIZE_IN_POINTERS + ARG_CNT;
 325                 }
 326 # endif
 327
 328                 disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
 329                 M_ALD(REG_ITMP3, REG_PV, disp);
 330                 M_MTCTR(REG_ITMP3);
 331
 332                 /* get or test the lock object */
 333
 334                 if (m->flags & ACC_STATIC) {
 335                         disp = dseg_add_address(cd, &m->class->object.header);
 336                         M_ALD(REG_A0, REG_PV, disp);
 337                 }
 338                 else {
 339                         M_TST(REG_A0);
 340                         M_BNE(1);
 341                         M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
 342                 }
 343
 344                 M_AST(REG_A0, REG_SP, s1 * 8);
 345                 M_JSR;
 346
 347 # if !defined(NDEBUG)
 348                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 349                         for (p = 0; p < INT_ARG_CNT; p++)
 350                                 M_ILD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 351
 352                         for (p = 0; p < FLT_ARG_CNT; p++)
 353                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 354
 355                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 356                 }
 357 # endif
 358         }
 359 #endif /* defined(ENABLE_THREADS) */
 360
 361         /* call trace function */
 362
 363         emit_verbosecall_enter(jd);
 364         }
 365
 366         /* end of header generation */
 367
 368         /* create replacement points */
 369
 370         REPLACEMENT_POINTS_INIT(cd, jd);
 371
 372         /* walk through all basic blocks */
 373
 374         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 375
 376                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 377
 378                 if (bptr->flags >= BBREACHED) {
 379                 /* branch resolving */
 380
 381                 codegen_resolve_branchrefs(cd, bptr);
 382
 383                 /* handle replacement points */
 384
 385                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 386
 387 #if defined(ENABLE_PROFILING)
 388                 /* generate basicblock profiling code */
 389
 390                 if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 391                         /* count frequency */
 392
 393                         disp = dseg_add_address(cd, code->bbfrequency);
 394                         M_ALD(REG_ITMP2, REG_PV, disp);
 395                         M_ALD(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 396                         M_IADD_IMM(REG_ITMP3, 1, REG_ITMP3);
 397                         M_AST(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 398
 399                         /* if this is an exception handler, start profiling again */
 400
 401 /*                      if (bptr->type == BBTYPE_EXH) */
 402 /*                              PROFILE_CYCLE_START; */
 403                 }
 404 #endif
 405
 406                 /* copy interface registers to their destination */
 407
 408                 len = bptr->indepth;
 409                 MCODECHECK(64+len);
 410
 411 #if defined(ENABLE_LSRA)
 412                 if (opt_lsra) {
 413                         while (src != NULL) {
 414                                 len--;
 415                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 416                                         /* d = reg_of_var(m, src, REG_ITMP1); */
 417                                         if (!IS_INMEMORY(src->flags))
 418                                                 d = src->vv.regoff;
 419                                         else
 420                                                 d = REG_ITMP1;
 421                                         M_INTMOVE(REG_ITMP1, d);
 422                                         emit_store(jd, NULL, src, d);
 423                                 }
 424                                 src = src->prev;
 425                         }
 426                 } else {
 427 #endif
 428                 while (len > 0) {
 429                         len--;
 430                         var = VAR(bptr->invars[len]);
 431                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 432                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 433                                 M_INTMOVE(REG_ITMP1, d);
 434                                 emit_store(jd, NULL, var, d);
 435                         }
 436                         else {
 437                                 assert((var->flags & INOUT));
 438                         }
 439                 }
 440
 441 #if defined(ENABLE_LSRA)
 442                 }
 443 #endif
 444                 /* walk through all instructions */
 445
 446                 len = bptr->icount;
 447                 currentline = 0;
 448
 449                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 450                         if (iptr->line != currentline) {
 451                                 dseg_addlinenumber(cd, iptr->line);
 452                                 currentline = iptr->line;
 453                         }
 454
 455                         MCODECHECK(64);   /* an instruction usually needs < 64 words      */
 456
 457                 switch (iptr->opc) {
 458                 case ICMD_NOP:        /* ...  ==> ...                                 */
 459                 case ICMD_POP:        /* ..., value  ==> ...                          */
 460                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 461                         break;
 462
 463                 case ICMD_INLINE_START:
 464
 465                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 466                         break;
 467
 468                 case ICMD_INLINE_BODY:
 469
 470                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 471                         dseg_addlinenumber_inline_start(cd, iptr);
 472                         dseg_addlinenumber(cd, iptr->line);
 473                         break;
 474
 475                 case ICMD_INLINE_END:
 476
 477                         dseg_addlinenumber_inline_end(cd, iptr);
 478                         dseg_addlinenumber(cd, iptr->line);
 479                         break;
 480
 481                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 482
 483                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 484                         emit_nullpointer_check(cd, iptr, s1);
 485                         break;
 486
 487                 /* constant operations ************************************************/
 488
 489                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 490
 491                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 492                         ICONST(d, iptr->sx.val.i);
 493                         emit_store_dst(jd, iptr, d);
 494                         break;
 495
 496                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 497
 498                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 499                         LCONST(d, iptr->sx.val.l);
 500                         emit_store_dst(jd, iptr, d);
 501                         break;
 502
 503                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 504
 505                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 506                         a = dseg_add_float(cd, iptr->sx.val.f);
 507                         M_FLD(d, REG_PV, a);
 508                         emit_store_dst(jd, iptr, d);
 509                         break;
 510
 511                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 512
 513                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 514                         a = dseg_add_double(cd, iptr->sx.val.d);
 515                         M_DLD(d, REG_PV, a);
 516                         emit_store_dst(jd, iptr, d);
 517                         break;
 518
 519                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 520
 521                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 522
 523                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 524                                 constant_classref *cr = iptr->sx.val.c.ref;;
 525
 526                                 disp = dseg_add_unique_address(cd, cr);
 527
 528                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
 529                                                                         cr, disp);
 530                         }
 531                         else
 532                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 533
 534                         M_ALD(d, REG_PV, disp);
 535                         emit_store_dst(jd, iptr, d);
 536                         break;
 537
 538
 539                 /* load/store/copy/move operations ************************************/
 540
 541                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 542                 case ICMD_ALOAD:      /* s1 = local variable                          */
 543                 case ICMD_LLOAD:
 544                 case ICMD_FLOAD:
 545                 case ICMD_DLOAD:
 546                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 547                 case ICMD_LSTORE:
 548                 case ICMD_FSTORE:
 549                 case ICMD_DSTORE:
 550                 case ICMD_COPY:
 551                 case ICMD_MOVE:
 552
 553                         emit_copy(jd, iptr);
 554                         break;
 555
 556                 case ICMD_ASTORE:
 557
 558                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 559                                 emit_copy(jd, iptr);
 560                         break;
 561
 562
 563                 /* integer operations *************************************************/
 564
 565                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 566
 567                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 568                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 569                         M_NEG(s1, d);
 570                         emit_store_dst(jd, iptr, d);
 571                         break;
 572
 573                 case ICMD_LNEG:       /* ..., value  ==> ..., - value                 */
 574
 575                         s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
 576                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 577                         M_SUBFIC(GET_LOW_REG(s1), 0, GET_LOW_REG(d));
 578                         M_SUBFZE(GET_HIGH_REG(s1), GET_HIGH_REG(d));
 579                         emit_store_dst(jd, iptr, d);
 580                         break;
 581
 582                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 583
 584                         s1 = emit_load_s1(jd, iptr, REG_ITMP2);
 585                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 586                         M_INTMOVE(s1, GET_LOW_REG(d));
 587                         M_SRA_IMM(GET_LOW_REG(d), 31, GET_HIGH_REG(d));
 588                         emit_store_dst(jd, iptr, d);
 589                         break;
 590
 591                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 592
 593                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP2);
 594                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 595                         M_INTMOVE(s1, d);
 596                         emit_store_dst(jd, iptr, d);
 597                         break;
 598
 599                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 600
 601                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 602                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 603                         M_BSEXT(s1, d);
 604                         emit_store_dst(jd, iptr, d);
 605                         break;
 606
 607                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 608
 609                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 610                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 611                         M_CZEXT(s1, d);
 612                         emit_store_dst(jd, iptr, d);
 613                         break;
 614
 615                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 616
 617                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 618                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 619                         M_SSEXT(s1, d);
 620                         emit_store_dst(jd, iptr, d);
 621                         break;
 622
 623
 624                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 625
 626                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 627                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 628                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 629                         M_IADD(s1, s2, d);
 630                         emit_store_dst(jd, iptr, d);
 631                         break;
 632
 633                                       /* s1.localindex = variable, sx.val.i = constant*/
 634
 635                 case ICMD_IINC:
 636                 case ICMD_IADDCONST:
 637
 638                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 639                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 640                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 641                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 642                         } else {
 643                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 644                                 M_IADD(s1, REG_ITMP2, d);
 645                         }
 646                         /* XXX the old code for ICMD_IINC was as follows:
 647                         {
 648                                 u4 m = iptr->sx.val.i;
 649                                 if (m & 0x8000)
 650                                         m += 65536;
 651                                 if (m & 0xffff0000)
 652                                         M_ADDIS(s1, m >> 16, d);
 653                                 if (m & 0xffff)
 654                                         M_IADD_IMM(s1, m & 0xffff, d);
 655                         }
 656                         */
 657                         emit_store_dst(jd, iptr, d);
 658                         break;
 659
 660                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 661
 662                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 663                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 664                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 665                         M_ADDC(s1, s2, GET_LOW_REG(d));
 666                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 667                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 668                         M_ADDE(s1, s2, GET_HIGH_REG(d));
 669                         emit_store_dst(jd, iptr, d);
 670                         break;
 671
 672                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 673                                       /* sx.val.l = constant                          */
 674
 675                         s3 = iptr->sx.val.l & 0xffffffff;
 676                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 677                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 678                         if ((s3 >= -32768) && (s3 <= 32767))
 679                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 680                         else {
 681                                 ICONST(REG_ITMP2, s3);
 682                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 683                         }
 684                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 685                         s3 = iptr->sx.val.l >> 32;
 686                         if (s3 == -1)
 687                                 M_ADDME(s1, GET_HIGH_REG(d));
 688                         else if (s3 == 0)
 689                                 M_ADDZE(s1, GET_HIGH_REG(d));
 690                         else {
 691                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 692                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 693                         }
 694                         emit_store_dst(jd, iptr, d);
 695                         break;
 696
 697                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 698
 699                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 700                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 701                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 702                         M_ISUB(s1, s2, d);
 703                         emit_store_dst(jd, iptr, d);
 704                         break;
 705
 706                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 707                                       /* sx.val.i = constant                          */
 708
 709                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 710                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 711                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768))
 712                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 713                         else {
 714                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 715                                 M_ISUB(s1, REG_ITMP2, d);
 716                         }
 717                         emit_store_dst(jd, iptr, d);
 718                         break;
 719
 720                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 721
 722                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 723                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 724                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 725                         M_SUBC(s1, s2, GET_LOW_REG(d));
 726                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 727                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 728                         M_SUBE(s1, s2, GET_HIGH_REG(d));
 729                         emit_store_dst(jd, iptr, d);
 730                         break;
 731
 732                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 733                                       /* sx.val.l = constant                          */
 734
 735                         s3 = (-iptr->sx.val.l) & 0xffffffff;
 736                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 737                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 738                         if ((s3 >= -32768) && (s3 <= 32767)) {
 739                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 740                         } else {
 741                                 ICONST(REG_ITMP2, s3);
 742                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 743                         }
 744                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 745                         s3 = (-iptr->sx.val.l) >> 32;
 746                         if (s3 == -1)
 747                                 M_ADDME(s1, GET_HIGH_REG(d));
 748                         else if (s3 == 0)
 749                                 M_ADDZE(s1, GET_HIGH_REG(d));
 750                         else {
 751                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 752                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 753                         }
 754                         emit_store_dst(jd, iptr, d);
 755                         break;
 756
 757                 case ICMD_IDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 758
 759                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 760                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 761                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 762                         emit_arithmetic_check(cd, iptr, s2);
 763                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 764                         M_CMP(REG_ITMP3, s1);
 765                         M_BNE(3 + (s1 != d));
 766                         M_CMPI(s2, -1);
 767                         M_BNE(1 + (s1 != d));
 768                         M_INTMOVE(s1, d);
 769                         M_BR(1);
 770                         M_IDIV(s1, s2, d);
 771                         emit_store_dst(jd, iptr, d);
 772                         break;
 773
 774                 case ICMD_IREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 775
 776                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 777                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 778                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 779                         emit_arithmetic_check(cd, iptr, s2);
 780                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 781                         M_CMP(REG_ITMP3, s1);
 782                         M_BNE(4);
 783                         M_CMPI(s2, -1);
 784                         M_BNE(2);
 785                         M_CLR(d);
 786                         M_BR(3);
 787                         M_IDIV(s1, s2, REG_ITMP3);
 788                         M_IMUL(REG_ITMP3, s2, REG_ITMP3);
 789                         M_ISUB(s1, REG_ITMP3, d);
 790                         emit_store_dst(jd, iptr, d);
 791                         break;
 792
 793                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 794                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 795
 796                         s1 = emit_load_s1(jd, iptr, REG_A0_A1_PACKED);
 797                         s2 = emit_load_s2(jd, iptr, REG_A2_A3_PACKED);
 798
 799                         /* XXX TODO: only do this if arithmetic check is really done! */
 800                         M_OR_TST(GET_HIGH_REG(s2), GET_LOW_REG(s2), REG_ITMP3);
 801                         /* XXX could be optimized */
 802                         emit_arithmetic_check(cd, iptr, REG_ITMP3);
 803
 804                         bte = iptr->sx.s23.s3.bte;
 805                         disp = dseg_add_functionptr(cd, bte->fp);
 806                         M_ALD(REG_ITMP3, REG_PV, disp);
 807                         M_MTCTR(REG_ITMP3);
 808
 809                         M_LNGMOVE(s1, REG_A0_A1_PACKED);
 810                         M_LNGMOVE(s2, REG_A2_A3_PACKED);
 811
 812                         M_JSR;
 813
 814                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
 815                         M_LNGMOVE(REG_RESULT_PACKED, d);
 816                         emit_store_dst(jd, iptr, d);
 817                         break;
 818
 819                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 820
 821                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 822                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 823                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 824                         M_IMUL(s1, s2, d);
 825                         emit_store_dst(jd, iptr, d);
 826                         break;
 827
 828                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 829                                       /* sx.val.i = constant                          */
 830
 831                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 832                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 833                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 834                                 M_IMUL_IMM(s1, iptr->sx.val.i, d);
 835                         else {
 836                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 837                                 M_IMUL(s1, REG_ITMP3, d);
 838                         }
 839                         emit_store_dst(jd, iptr, d);
 840                         break;
 841
 842                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 843
 844                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 845                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 846                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 847                         M_ADDZE(d, d);
 848                         emit_store_dst(jd, iptr, d);
 849                         break;
 850
 851                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 852
 853                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 854                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 855                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 856                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 857                         M_SLL(s1, REG_ITMP3, d);
 858                         emit_store_dst(jd, iptr, d);
 859                         break;
 860
 861                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 862                                       /* sx.val.i = constant                          */
 863
 864                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 865                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 866                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 867                         emit_store_dst(jd, iptr, d);
 868                         break;
 869
 870                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 871
 872                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 873                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 874                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 875                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 876                         M_SRA(s1, REG_ITMP3, d);
 877                         emit_store_dst(jd, iptr, d);
 878                         break;
 879
 880                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 881                                       /* sx.val.i = constant                          */
 882
 883                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 884                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 885                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 886                         emit_store_dst(jd, iptr, d);
 887                         break;
 888
 889                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 890
 891                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 892                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 893                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 894                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 895                         M_SRL(s1, REG_ITMP2, d);
 896                         emit_store_dst(jd, iptr, d);
 897                         break;
 898
 899                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 900                                       /* sx.val.i = constant                          */
 901
 902                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 903                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 904                         if (iptr->sx.val.i & 0x1f)
 905                                 M_SRL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 906                         else {
 907                                 M_INTMOVE(s1, d);
 908                         }
 909                         emit_store_dst(jd, iptr, d);
 910                         break;
 911
 912                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 913
 914                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 915                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 916                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 917                         M_AND(s1, s2, d);
 918                         emit_store_dst(jd, iptr, d);
 919                         break;
 920
 921                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 922                                       /* sx.val.i = constant                          */
 923
 924                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 925                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 926                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 927                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 928                         /*
 929                         else if (iptr->sx.val.i == 0xffffff) {
 930                                 M_RLWINM(s1, 0, 8, 31, d);
 931                                 }
 932                         */
 933                         else {
 934                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 935                                 M_AND(s1, REG_ITMP3, d);
 936                         }
 937                         emit_store_dst(jd, iptr, d);
 938                         break;
 939
 940                 case ICMD_LAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 941
 942                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 943                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 944                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 945                         M_AND(s1, s2, GET_LOW_REG(d));
 946                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 947                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 948                         M_AND(s1, s2, GET_HIGH_REG(d));
 949                         emit_store_dst(jd, iptr, d);
 950                         break;
 951
 952                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 953                                       /* sx.val.l = constant                          */
 954
 955                         s3 = iptr->sx.val.l & 0xffffffff;
 956                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 957                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 958                         if ((s3 >= 0) && (s3 <= 65535))
 959                                 M_AND_IMM(s1, s3, GET_LOW_REG(d));
 960                         else {
 961                                 ICONST(REG_ITMP3, s3);
 962                                 M_AND(s1, REG_ITMP3, GET_LOW_REG(d));
 963                         }
 964                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 965                         s3 = iptr->sx.val.l >> 32;
 966                         if ((s3 >= 0) && (s3 <= 65535))
 967                                 M_AND_IMM(s1, s3, GET_HIGH_REG(d));
 968                         else {
 969                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 970                                 M_AND(s1, REG_ITMP3, GET_HIGH_REG(d));
 971                         }
 972                         emit_store_dst(jd, iptr, d);
 973                         break;
 974
 975                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 976                                       /* sx.val.i = constant                          */
 977
 978                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 979                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 980                         M_MOV(s1, REG_ITMP2);
 981                         M_CMPI(s1, 0);
 982                         M_BGE(1 + 2*(iptr->sx.val.i >= 32768));
 983                         if (iptr->sx.val.i >= 32768) {
 984                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 985                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 986                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 987                         }
 988                         else {
 989                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 990                         }
 991                         {
 992                                 int b=0, m = iptr->sx.val.i;
 993                                 while (m >>= 1)
 994                                         ++b;
 995                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 996                         }
 997                         M_ISUB(s1, REG_ITMP2, d);
 998                         emit_store_dst(jd, iptr, d);
 999                         break;
1000
1001                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
1002
1003                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1004                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1005                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1006                         M_OR(s1, s2, d);
1007                         emit_store_dst(jd, iptr, d);
1008                         break;
1009
1010                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
1011                                       /* sx.val.i = constant                          */
1012
1013                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1014                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1015                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1016                                 M_OR_IMM(s1, iptr->sx.val.i, d);
1017                         else {
1018                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1019                                 M_OR(s1, REG_ITMP3, d);
1020                         }
1021                         emit_store_dst(jd, iptr, d);
1022                         break;
1023
1024                 case ICMD_LOR:       /* ..., val1, val2  ==> ..., val1 | val2        */
1025
1026                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1027                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1028                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1029                         M_OR(s1, s2, GET_LOW_REG(d));
1030                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1031                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1032                         M_OR(s1, s2, GET_HIGH_REG(d));
1033                         emit_store_dst(jd, iptr, d);
1034                         break;
1035
1036                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
1037                                       /* sx.val.l = constant                          */
1038
1039                         s3 = iptr->sx.val.l & 0xffffffff;
1040                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1041                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1042                         if ((s3 >= 0) && (s3 <= 65535))
1043                                 M_OR_IMM(s1, s3, GET_LOW_REG(d));
1044                         else {
1045                                 ICONST(REG_ITMP3, s3);
1046                                 M_OR(s1, REG_ITMP3, GET_LOW_REG(d));
1047                         }
1048                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1049                         s3 = iptr->sx.val.l >> 32;
1050                         if ((s3 >= 0) && (s3 <= 65535))
1051                                 M_OR_IMM(s1, s3, GET_HIGH_REG(d));
1052                         else {
1053                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1054                                 M_OR(s1, REG_ITMP3, GET_HIGH_REG(d));
1055                         }
1056                         emit_store_dst(jd, iptr, d);
1057                         break;
1058
1059                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1060
1061                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1062                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1063                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1064                         M_XOR(s1, s2, d);
1065                         emit_store_dst(jd, iptr, d);
1066                         break;
1067
1068                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1069                                       /* sx.val.i = constant                          */
1070
1071                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1072                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1073                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1074                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1075                         else {
1076                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1077                                 M_XOR(s1, REG_ITMP3, d);
1078                         }
1079                         emit_store_dst(jd, iptr, d);
1080                         break;
1081
1082                 case ICMD_LXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1083
1084                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1085                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1086                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1087                         M_XOR(s1, s2, GET_LOW_REG(d));
1088                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1089                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1090                         M_XOR(s1, s2, GET_HIGH_REG(d));
1091                         emit_store_dst(jd, iptr, d);
1092                         break;
1093
1094                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1095                                       /* sx.val.l = constant                          */
1096
1097                         s3 = iptr->sx.val.l & 0xffffffff;
1098                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1099                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1100                         if ((s3 >= 0) && (s3 <= 65535))
1101                                 M_XOR_IMM(s1, s3, GET_LOW_REG(d));
1102                         else {
1103                                 ICONST(REG_ITMP3, s3);
1104                                 M_XOR(s1, REG_ITMP3, GET_LOW_REG(d));
1105                         }
1106                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1107                         s3 = iptr->sx.val.l >> 32;
1108                         if ((s3 >= 0) && (s3 <= 65535))
1109                                 M_XOR_IMM(s1, s3, GET_HIGH_REG(d));
1110                         else {
1111                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1112                                 M_XOR(s1, REG_ITMP3, GET_HIGH_REG(d));
1113                         }
1114                         emit_store_dst(jd, iptr, d);
1115                         break;
1116
1117                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1118
1119                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
1120                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1121                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1122                         vm_abort("codegen: implement ICMD_LCMP!");
1123                         emit_store_dst(jd, iptr, d);
1124                         break;
1125
1126
1127                 /* floating operations ************************************************/
1128
1129                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1130
1131                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1132                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1133                         M_FMOVN(s1, d);
1134                         emit_store_dst(jd, iptr, d);
1135                         break;
1136
1137                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1138
1139                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1140                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1141                         M_FMOVN(s1, d);
1142                         emit_store_dst(jd, iptr, d);
1143                         break;
1144
1145                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1146
1147                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1148                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1149                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1150                         M_FADD(s1, s2, d);
1151                         emit_store_dst(jd, iptr, d);
1152                         break;
1153
1154                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1155
1156                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1157                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1158                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1159                         M_DADD(s1, s2, d);
1160                         emit_store_dst(jd, iptr, d);
1161                         break;
1162
1163                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1164
1165                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1166                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1167                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1168                         M_FSUB(s1, s2, d);
1169                         emit_store_dst(jd, iptr, d);
1170                         break;
1171
1172                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1173
1174                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1175                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1176                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1177                         M_DSUB(s1, s2, d);
1178                         emit_store_dst(jd, iptr, d);
1179                         break;
1180
1181                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1182
1183                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1184                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1185                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1186                         M_FMUL(s1, s2, d);
1187                         emit_store_dst(jd, iptr, d);
1188                         break;
1189
1190                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1191
1192                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1193                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1194                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1195                         M_DMUL(s1, s2, d);
1196                         emit_store_dst(jd, iptr, d);
1197                         break;
1198
1199                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1200
1201                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1202                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1203                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1204                         M_FDIV(s1, s2, d);
1205                         emit_store_dst(jd, iptr, d);
1206                         break;
1207
1208                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1209
1210                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1211                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1212                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1213                         M_DDIV(s1, s2, d);
1214                         emit_store_dst(jd, iptr, d);
1215                         break;
1216
1217                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1218                 case ICMD_D2I:
1219
1220                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1221                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1222                         M_CLR(d);
1223                         disp = dseg_add_float(cd, 0.0);
1224                         M_FLD(REG_FTMP2, REG_PV, disp);
1225                         M_FCMPU(s1, REG_FTMP2);
1226                         M_BNAN(4);
1227                         disp = dseg_add_unique_s4(cd, 0);
1228                         M_CVTDL_C(s1, REG_FTMP1);
1229                         M_LDA(REG_ITMP1, REG_PV, disp);
1230                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1231                         M_ILD(d, REG_PV, disp);
1232                         emit_store_dst(jd, iptr, d);
1233                         break;
1234
1235                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1236
1237                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1238                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1239                         M_FLTMOVE(s1, d);
1240                         emit_store_dst(jd, iptr, d);
1241                         break;
1242
1243                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1244
1245                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1246                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1247                         M_CVTDF(s1, d);
1248                         emit_store_dst(jd, iptr, d);
1249                         break;
1250
1251                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1252                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1253
1254                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1255                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1256                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1257                         M_FCMPU(s2, s1);
1258                         M_IADD_IMM(REG_ZERO, -1, d);
1259                         M_BNAN(4);
1260                         M_BGT(3);
1261                         M_IADD_IMM(REG_ZERO, 0, d);
1262                         M_BGE(1);
1263                         M_IADD_IMM(REG_ZERO, 1, d);
1264                         emit_store_dst(jd, iptr, d);
1265                         break;
1266
1267                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1268                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1269
1270                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1271                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1272                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1273                         M_FCMPU(s1, s2);
1274                         M_IADD_IMM(REG_ZERO, 1, d);
1275                         M_BNAN(4);
1276                         M_BGT(3);
1277                         M_IADD_IMM(REG_ZERO, 0, d);
1278                         M_BGE(1);
1279                         M_IADD_IMM(REG_ZERO, -1, d);
1280                         emit_store_dst(jd, iptr, d);
1281                         break;
1282
1283
1284                 /* memory operations **************************************************/
1285
1286                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1287
1288                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1289                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1290                         /* implicit null-pointer check */
1291                         M_ILD(d, s1, OFFSET(java_array_t, size));
1292                         emit_store_dst(jd, iptr, d);
1293                         break;
1294
1295                 case ICMD_BALOAD:     /* ..., 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_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1302                         /* implicit null-pointer check */
1303                         M_LBZX(d, s1, REG_ITMP2);
1304                         M_BSEXT(d, d);
1305                         emit_store_dst(jd, iptr, d);
1306                         break;
1307
1308                 case ICMD_CALOAD:     /* ..., 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, 1, REG_ITMP2);
1315                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1316                         /* implicit null-pointer check */
1317                         M_LHZX(d, s1, REG_ITMP2);
1318                         emit_store_dst(jd, iptr, d);
1319                         break;
1320
1321                 case ICMD_SALOAD:     /* ..., 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_ITMP2);
1326                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1327                         M_SLL_IMM(s2, 1, REG_ITMP2);
1328                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1329                         /* implicit null-pointer check */
1330                         M_LHAX(d, s1, REG_ITMP2);
1331                         emit_store_dst(jd, iptr, d);
1332                         break;
1333
1334                 case ICMD_IALOAD:     /* ..., 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_ITMP2);
1339                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1340                         M_SLL_IMM(s2, 2, REG_ITMP2);
1341                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1342                         /* implicit null-pointer check */
1343                         M_LWZX(d, s1, REG_ITMP2);
1344                         emit_store_dst(jd, iptr, d);
1345                         break;
1346
1347                 case ICMD_LALOAD:     /* ..., 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_ITMP12_PACKED);
1352                         /* implicit null-pointer check */
1353                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1354                         M_SLL_IMM(s2, 3, REG_ITMP2);
1355                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1356                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray_t, data[0]));
1357                         emit_store_dst(jd, iptr, d);
1358                         break;
1359
1360                 case ICMD_FALOAD:     /* ..., 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_FTMP1);
1365                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1366                         M_SLL_IMM(s2, 2, REG_ITMP2);
1367                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1368                         /* implicit null-pointer check */
1369                         M_LFSX(d, s1, REG_ITMP2);
1370                         emit_store_dst(jd, iptr, d);
1371                         break;
1372
1373                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1374
1375                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1376                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1377                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1378                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1379                         M_SLL_IMM(s2, 3, REG_ITMP2);
1380                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1381                         /* implicit null-pointer check */
1382                         M_LFDX(d, s1, REG_ITMP2);
1383                         emit_store_dst(jd, iptr, d);
1384                         break;
1385
1386                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1387
1388                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1389                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1390                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1391                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1392                         M_SLL_IMM(s2, 2, REG_ITMP2);
1393                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1394                         /* implicit null-pointer check */
1395                         M_LWZX(d, s1, REG_ITMP2);
1396                         emit_store_dst(jd, iptr, d);
1397                         break;
1398
1399
1400                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1401
1402                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1403                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1404                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1405                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1406                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1407                         /* implicit null-pointer check */
1408                         M_STBX(s3, s1, REG_ITMP2);
1409                         break;
1410
1411                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1412
1413                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1414                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1415                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1416                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1417                         M_SLL_IMM(s2, 1, REG_ITMP2);
1418                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1419                         /* implicit null-pointer check */
1420                         M_STHX(s3, s1, REG_ITMP2);
1421                         break;
1422
1423                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1424
1425                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1426                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1427                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1428                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1429                         M_SLL_IMM(s2, 1, REG_ITMP2);
1430                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1431                         /* implicit null-pointer check */
1432                         M_STHX(s3, s1, REG_ITMP2);
1433                         break;
1434
1435                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1436
1437                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1438                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1439                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1440                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1441                         M_SLL_IMM(s2, 2, REG_ITMP2);
1442                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1443                         /* implicit null-pointer check */
1444                         M_STWX(s3, s1, REG_ITMP2);
1445                         break;
1446
1447                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1448
1449                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1450                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1451                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1452                         s3 = emit_load_s3_high(jd, iptr, REG_ITMP3);
1453                         M_SLL_IMM(s2, 3, REG_ITMP2);
1454                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray_t, data[0]), REG_ITMP2);
1455                         /* implicit null-pointer check */
1456                         M_STWX(s3, s1, REG_ITMP2);
1457                         M_IADD_IMM(REG_ITMP2, 4, REG_ITMP2);
1458                         s3 = emit_load_s3_low(jd, iptr, REG_ITMP3);
1459                         M_STWX(s3, s1, REG_ITMP2);
1460                         break;
1461
1462                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1463
1464                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1465                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1466                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1467                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1468                         M_SLL_IMM(s2, 2, REG_ITMP2);
1469                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1470                         /* implicit null-pointer check */
1471                         M_STFSX(s3, s1, REG_ITMP2);
1472                         break;
1473
1474                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1475
1476                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1477                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1478                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1479                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1480                         M_SLL_IMM(s2, 3, REG_ITMP2);
1481                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1482                         /* implicit null-pointer check */
1483                         M_STFDX(s3, s1, REG_ITMP2);
1484                         break;
1485
1486                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1487
1488                         s1 = emit_load_s1(jd, iptr, REG_A0);
1489                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1490                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1491                         s3 = emit_load_s3(jd, iptr, REG_A1);
1492
1493                         /* XXX what if array is NULL */
1494                         disp = dseg_add_functionptr(cd, BUILTIN_FAST_canstore);
1495                         M_ALD(REG_ITMP3, REG_PV, disp);
1496                         M_MTCTR(REG_ITMP3);
1497
1498                         M_INTMOVE(s1, REG_A0);
1499                         M_INTMOVE(s3, REG_A1);
1500
1501                         M_JSR;
1502                         emit_arraystore_check(cd, iptr);
1503
1504                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1505                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1506                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1507                         M_SLL_IMM(s2, 2, REG_ITMP2);
1508                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1509                         /* implicit null-pointer check */
1510                         M_STWX(s3, s1, REG_ITMP2);
1511                         break;
1512
1513
1514                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1515
1516                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1517                                 uf        = iptr->sx.s23.s3.uf;
1518                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1519                                 disp      = dseg_add_unique_address(cd, uf);
1520
1521                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
1522                         }
1523                         else {
1524                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1525                                 fieldtype = fi->type;
1526                                 disp      = dseg_add_address(cd, fi->value);
1527
1528                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class))
1529                                         patcher_add_patch_ref(jd, PATCHER_initialize_class,
1530                                                                                 fi->class, disp);
1531                         }
1532
1533                         M_ALD(REG_ITMP1, REG_PV, disp);
1534                         switch (fieldtype) {
1535                         case TYPE_INT:
1536                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1537                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1538                                 break;
1539                         case TYPE_LNG:
1540                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1541                                 M_ILD_INTERN(GET_LOW_REG(d), REG_ITMP1, 4);/* keep this order */
1542                                 M_ILD_INTERN(GET_HIGH_REG(d), REG_ITMP1, 0);/*keep this order */
1543                                 break;
1544                         case TYPE_ADR:
1545                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1546                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1547                                 break;
1548                         case TYPE_FLT:
1549                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1550                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1551                                 break;
1552                         case TYPE_DBL:
1553                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1554                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1555                                 break;
1556                         }
1557                         emit_store_dst(jd, iptr, d);
1558                         break;
1559
1560                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1561
1562                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1563                                 uf        = iptr->sx.s23.s3.uf;
1564                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1565                                 disp      = dseg_add_unique_address(cd, uf);
1566
1567                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
1568                         }
1569                         else {
1570                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1571                                 fieldtype = fi->type;
1572                                 disp      = dseg_add_address(cd, fi->value);
1573
1574                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class))
1575                                         patcher_add_patch_ref(jd, PATCHER_initialize_class,
1576                                                                                 fi->class, disp);
1577                         }
1578
1579                         M_ALD(REG_ITMP1, REG_PV, disp);
1580                         switch (fieldtype) {
1581                         case TYPE_INT:
1582                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1583                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1584                                 break;
1585                         case TYPE_LNG:
1586                                 s1 = emit_load_s1(jd, iptr, REG_ITMP23_PACKED);
1587                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1588                                 break;
1589                         case TYPE_ADR:
1590                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1591                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1592                                 break;
1593                         case TYPE_FLT:
1594                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1595                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1596                                 break;
1597                         case TYPE_DBL:
1598                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1599                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1600                                 break;
1601                         }
1602                         break;
1603
1604
1605                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1606
1607                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1608
1609                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1610                                 uf        = iptr->sx.s23.s3.uf;
1611                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1612                                 disp      = 0;
1613
1614                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1615                         }
1616                         else {
1617                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1618                                 fieldtype = fi->type;
1619                                 disp      = fi->offset;
1620                         }
1621
1622                         /* implicit null-pointer check */
1623                         switch (fieldtype) {
1624                         case TYPE_INT:
1625                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1626                                 M_ILD(d, s1, disp);
1627                                 break;
1628                         case TYPE_LNG:
1629                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1630                                 if (GET_HIGH_REG(d) == s1) {
1631                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1632                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1633                                 }
1634                                 else {
1635                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1636                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1637                                 }
1638                                 break;
1639                         case TYPE_ADR:
1640                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1641                                 M_ALD(d, s1, disp);
1642                                 break;
1643                         case TYPE_FLT:
1644                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1645                                 M_FLD(d, s1, disp);
1646                                 break;
1647                         case TYPE_DBL:
1648                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1649                                 M_DLD(d, s1, disp);
1650                                 break;
1651                         }
1652                         emit_store_dst(jd, iptr, d);
1653                         break;
1654
1655                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1656
1657                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1658
1659                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1660                                 uf        = iptr->sx.s23.s3.uf;
1661                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1662                                 disp      = 0;
1663                         }
1664                         else {
1665                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1666                                 fieldtype = fi->type;
1667                                 disp      = fi->offset;
1668                         }
1669
1670                         if (IS_INT_LNG_TYPE(fieldtype)) {
1671                                 if (IS_2_WORD_TYPE(fieldtype))
1672                                         s2 = emit_load_s2(jd, iptr, REG_ITMP23_PACKED);
1673                                 else
1674                                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1675                         }
1676                         else
1677                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1678
1679                         if (INSTRUCTION_IS_UNRESOLVED(iptr))
1680                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1681
1682                         /* implicit null-pointer check */
1683                         switch (fieldtype) {
1684                         case TYPE_INT:
1685                                 M_IST(s2, s1, disp);
1686                                 break;
1687                         case TYPE_LNG:
1688                                 M_IST(GET_LOW_REG(s2), s1, disp + 4);      /* keep this order */
1689                                 M_IST(GET_HIGH_REG(s2), s1, disp);         /* keep this order */
1690                                 break;
1691                         case TYPE_ADR:
1692                                 M_AST(s2, s1, disp);
1693                                 break;
1694                         case TYPE_FLT:
1695                                 M_FST(s2, s1, disp);
1696                                 break;
1697                         case TYPE_DBL:
1698                                 M_DST(s2, s1, disp);
1699                                 break;
1700                         }
1701                         break;
1702
1703
1704                 /* branch operations **************************************************/
1705
1706                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1707
1708                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1709                         M_INTMOVE(s1, REG_ITMP1_XPTR);
1710
1711 #ifdef ENABLE_VERIFIER
1712                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1713                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
1714
1715                                 patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
1716                         }
1717 #endif /* ENABLE_VERIFIER */
1718
1719                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1720                         M_ALD(REG_ITMP2, REG_PV, disp);
1721                         M_MTCTR(REG_ITMP2);
1722
1723                         if (code_is_leafmethod(code))
1724                                 M_MFLR(REG_ITMP3);                          /* save LR        */
1725
1726                         M_BL(0);                                        /* get current PC */
1727                         M_MFLR(REG_ITMP2_XPC);
1728
1729                         if (code_is_leafmethod(code))
1730                                 M_MTLR(REG_ITMP3);                          /* restore LR     */
1731
1732                         M_RTS;                                          /* jump to CTR    */
1733                         ALIGNCODENOP;
1734                         break;
1735
1736                 case ICMD_GOTO:         /* ... ==> ...                                */
1737                 case ICMD_RET:          /* ... ==> ...                                */
1738
1739                         emit_br(cd, iptr->dst.block);
1740                         ALIGNCODENOP;
1741                         break;
1742
1743                 case ICMD_JSR:          /* ... ==> ...                                */
1744
1745                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1746                         ALIGNCODENOP;
1747                         break;
1748
1749                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1750                 case ICMD_IFNONNULL:
1751
1752                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1753                         M_TST(s1);
1754                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFNULL, BRANCH_OPT_NONE);
1755                         break;
1756
1757                 case ICMD_IFLT:
1758                 case ICMD_IFLE:
1759                 case ICMD_IFNE:
1760                 case ICMD_IFGT:
1761                 case ICMD_IFGE:
1762                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1763
1764                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1765                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1766                                 M_CMPI(s1, iptr->sx.val.i);
1767                         else {
1768                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1769                                 M_CMP(s1, REG_ITMP2);
1770                         }
1771                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1772                         break;
1773
1774
1775                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1776
1777                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1778                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1779                         if (iptr->sx.val.l == 0) {
1780                                 M_OR_TST(s1, s2, REG_ITMP3);
1781                         }
1782                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1783                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1784                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1785                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1786                         }
1787                         else {
1788                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1789                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1790                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1791                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1792                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1793                         }
1794                         emit_beq(cd, iptr->dst.block);
1795                         break;
1796
1797                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1798
1799                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1800                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1801                         if (iptr->sx.val.l == 0) {
1802                                 /* if high word is less than zero, the whole long is too */
1803                                 M_CMPI(s2, 0);
1804                                 emit_blt(cd, iptr->dst.block);
1805                         }
1806                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1807                                 M_CMPI(s2, 0);
1808                                 emit_blt(cd, iptr->dst.block);
1809                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1810                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1811                                 emit_blt(cd, iptr->dst.block);
1812                                 emit_label(cd, BRANCH_LABEL_1);
1813                         }
1814                         else {
1815                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1816                                 M_CMP(s2, REG_ITMP3);
1817                                 emit_blt(cd, iptr->dst.block);
1818                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1819                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1820                                 M_CMPU(s1, REG_ITMP3);
1821                                 emit_blt(cd, iptr->dst.block);
1822                                 emit_label(cd, BRANCH_LABEL_1);
1823                         }
1824                         break;
1825
1826                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1827
1828                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1829                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1830 /*                      if (iptr->sx.val.l == 0) { */
1831 /*                              M_OR(s1, s2, REG_ITMP3); */
1832 /*                              M_CMPI(REG_ITMP3, 0); */
1833
1834 /*                      } else  */
1835                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1836                                 M_CMPI(s2, 0);
1837                                 emit_blt(cd, iptr->dst.block);
1838                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1839                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1840                         }
1841                         else {
1842                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1843                                 M_CMP(s2, REG_ITMP3);
1844                                 emit_blt(cd, iptr->dst.block);
1845                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1846                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1847                                 M_CMPU(s1, REG_ITMP3);
1848                         }
1849                         emit_ble(cd, iptr->dst.block);
1850                         emit_label(cd, BRANCH_LABEL_1);
1851                         break;
1852
1853                 case ICMD_IF_LNE:       /* ..., value ==> ...                         */
1854
1855                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1856                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1857                         if (iptr->sx.val.l == 0) {
1858                                 M_OR_TST(s1, s2, REG_ITMP3);
1859                         }
1860                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1861                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1862                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1863                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1864                         }
1865                         else {
1866                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1867                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1868                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1869                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1870                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1871                         }
1872                         emit_bne(cd, iptr->dst.block);
1873                         break;
1874
1875                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1876
1877                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1878                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1879 /*                      if (iptr->sx.val.l == 0) { */
1880 /*                              M_OR(s1, s2, REG_ITMP3); */
1881 /*                              M_CMPI(REG_ITMP3, 0); */
1882
1883 /*                      } else  */
1884                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1885                                 M_CMPI(s2, 0);
1886                                 emit_bgt(cd, iptr->dst.block);
1887                                 emit_label_blt(cd, BRANCH_LABEL_1);
1888                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1889                         }
1890                         else {
1891                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1892                                 M_CMP(s2, REG_ITMP3);
1893                                 emit_bgt(cd, iptr->dst.block);
1894                                 emit_label_blt(cd, BRANCH_LABEL_1);
1895                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1896                                 M_CMPU(s1, REG_ITMP3);
1897                         }
1898                         emit_bgt(cd, iptr->dst.block);
1899                         emit_label(cd, BRANCH_LABEL_1);
1900                         break;
1901
1902                 case ICMD_IF_LGE:       /* ..., value ==> ...                         */
1903
1904                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1905                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1906                         if (iptr->sx.val.l == 0) {
1907                                 /* if high word is greater equal zero, the whole long is too */
1908                                 M_CMPI(s2, 0);
1909                                 emit_bge(cd, iptr->dst.block);
1910                         }
1911                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1912                                 M_CMPI(s2, 0);
1913                                 emit_bgt(cd, iptr->dst.block);
1914                                 emit_label_blt(cd, BRANCH_LABEL_1);
1915                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1916                                 emit_bge(cd, iptr->dst.block);
1917                                 emit_label(cd, BRANCH_LABEL_1);
1918                         }
1919                         else {
1920                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1921                                 M_CMP(s2, REG_ITMP3);
1922                                 emit_bgt(cd, iptr->dst.block);
1923                                 emit_label_blt(cd, BRANCH_LABEL_1);
1924                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1925                                 M_CMPU(s1, REG_ITMP3);
1926                                 emit_bge(cd, iptr->dst.block);
1927                                 emit_label(cd, BRANCH_LABEL_1);
1928                         }
1929                         break;
1930
1931                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
1932                 case ICMD_IF_ICMPNE:
1933                 case ICMD_IF_ICMPLT:
1934                 case ICMD_IF_ICMPGT:
1935                 case ICMD_IF_ICMPLE:
1936                 case ICMD_IF_ICMPGE:
1937
1938                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1939                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1940                         M_CMP(s1, s2);
1941                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ICMPEQ, BRANCH_OPT_NONE);
1942                         break;
1943
1944                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
1945                 case ICMD_IF_ACMPNE:
1946
1947                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1948                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1949                         M_CMP(s1, s2);
1950                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ACMPEQ, BRANCH_OPT_NONE);
1951                         break;
1952
1953                 case ICMD_IF_LCMPEQ:    /* ..., value, value ==> ...                  */
1954
1955                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1956                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1957                         M_CMP(s1, s2);
1958                         emit_label_bne(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_CMP(s1, s2);
1962                         emit_beq(cd, iptr->dst.block);
1963                         emit_label(cd, BRANCH_LABEL_1);
1964                         break;
1965
1966                 case ICMD_IF_LCMPNE:    /* ..., 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_bne(cd, iptr->dst.block);
1972                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1973                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1974                         M_CMP(s1, s2);
1975                         emit_bne(cd, iptr->dst.block);
1976                         break;
1977
1978                 case ICMD_IF_LCMPLT:    /* ..., value, value ==> ...                  */
1979
1980                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1981                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1982                         M_CMP(s1, s2);
1983                         emit_blt(cd, iptr->dst.block);
1984                         emit_label_bgt(cd, BRANCH_LABEL_1);
1985                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1986                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1987                         M_CMPU(s1, s2);
1988                         emit_blt(cd, iptr->dst.block);
1989                         emit_label(cd, BRANCH_LABEL_1);
1990                         break;
1991
1992                 case ICMD_IF_LCMPGT:    /* ..., value, value ==> ...                  */
1993
1994                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1995                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1996                         M_CMP(s1, s2);
1997                         emit_bgt(cd, iptr->dst.block);
1998                         emit_label_blt(cd, BRANCH_LABEL_1);
1999                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2000                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2001                         M_CMPU(s1, s2);
2002                         emit_bgt(cd, iptr->dst.block);
2003                         emit_label(cd, BRANCH_LABEL_1);
2004                         break;
2005
2006                 case ICMD_IF_LCMPLE:    /* ..., value, value ==> ...                  */
2007
2008                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2009                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2010                         M_CMP(s1, s2);
2011                         emit_blt(cd, iptr->dst.block);
2012                         emit_label_bgt(cd, BRANCH_LABEL_1);
2013                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2014                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2015                         M_CMPU(s1, s2);
2016                         emit_ble(cd, iptr->dst.block);
2017                         emit_label(cd, BRANCH_LABEL_1);
2018                         break;
2019
2020                 case ICMD_IF_LCMPGE:    /* ..., value, value ==> ...                  */
2021
2022                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2023                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2024                         M_CMP(s1, s2);
2025                         emit_bgt(cd, iptr->dst.block);
2026                         emit_label_blt(cd, BRANCH_LABEL_1);
2027                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2028                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2029                         M_CMPU(s1, s2);
2030                         emit_bge(cd, iptr->dst.block);
2031                         emit_label(cd, BRANCH_LABEL_1);
2032                         break;
2033
2034                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
2035
2036                         REPLACEMENT_POINT_RETURN(cd, iptr);
2037                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2038                         M_INTMOVE(s1, REG_RESULT);
2039                         goto nowperformreturn;
2040
2041                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
2042
2043                         REPLACEMENT_POINT_RETURN(cd, iptr);
2044                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2045                         M_INTMOVE(s1, REG_RESULT);
2046
2047 #ifdef ENABLE_VERIFIER
2048                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2049                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
2050
2051                                 patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
2052                         }
2053 #endif /* ENABLE_VERIFIER */
2054                         goto nowperformreturn;
2055
2056                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
2057
2058                         REPLACEMENT_POINT_RETURN(cd, iptr);
2059                         s1 = emit_load_s1(jd, iptr, REG_RESULT_PACKED);
2060                         M_LNGMOVE(s1, REG_RESULT_PACKED);
2061                         goto nowperformreturn;
2062
2063                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
2064                 case ICMD_DRETURN:
2065
2066                         REPLACEMENT_POINT_RETURN(cd, iptr);
2067                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
2068                         M_FLTMOVE(s1, REG_FRESULT);
2069                         goto nowperformreturn;
2070
2071                 case ICMD_RETURN:      /* ...  ==> ...                                */
2072
2073                         REPLACEMENT_POINT_RETURN(cd, iptr);
2074
2075 nowperformreturn:
2076                         {
2077                         s4 i, p;
2078
2079                         p = cd->stackframesize;
2080
2081                         /* call trace function */
2082
2083                         emit_verbosecall_exit(jd);
2084
2085 #if defined(ENABLE_THREADS)
2086                         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
2087                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
2088                                 M_ALD(REG_ITMP3, REG_PV, disp);
2089                                 M_MTCTR(REG_ITMP3);
2090
2091                                 /* we need to save the proper return value */
2092
2093                                 switch (iptr->opc) {
2094                                 case ICMD_LRETURN:
2095                                         M_IST(REG_RESULT2, REG_SP, rd->memuse * 8 + 8);
2096                                         /* fall through */
2097                                 case ICMD_IRETURN:
2098                                 case ICMD_ARETURN:
2099                                         M_IST(REG_RESULT , REG_SP, rd->memuse * 8 + 4);
2100                                         break;
2101                                 case ICMD_FRETURN:
2102                                 case ICMD_DRETURN:
2103                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 4);
2104                                         break;
2105                                 }
2106
2107                                 M_ALD(REG_A0, REG_SP, rd->memuse * 8);
2108                                 M_JSR;
2109
2110                                 /* and now restore the proper return value */
2111
2112                                 switch (iptr->opc) {
2113                                 case ICMD_LRETURN:
2114                                         M_ILD(REG_RESULT2, REG_SP, rd->memuse * 8 + 8);
2115                                         /* fall through */
2116                                 case ICMD_IRETURN:
2117                                 case ICMD_ARETURN:
2118                                         M_ILD(REG_RESULT , REG_SP, rd->memuse * 8 + 4);
2119                                         break;
2120                                 case ICMD_FRETURN:
2121                                 case ICMD_DRETURN:
2122                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 4);
2123                                         break;
2124                                 }
2125                         }
2126 #endif
2127
2128                         /* restore return address                                         */
2129
2130                         if (!code_is_leafmethod(code)) {
2131                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
2132                                    may have a displacement overflow. */
2133
2134                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
2135                                 M_MTLR(REG_ITMP1);
2136                         }
2137
2138                         /* restore saved registers                                        */
2139
2140                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
2141                                 p--; M_ILD(rd->savintregs[i], REG_SP, p * 8);
2142                         }
2143                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
2144                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
2145                         }
2146
2147                         /* deallocate stack                                               */
2148
2149                         if (cd->stackframesize)
2150                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
2151
2152                         M_RET;
2153                         ALIGNCODENOP;
2154                         }
2155                         break;
2156
2157
2158                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
2159                         {
2160                         s4 i, l;
2161                         branch_target_t *table;
2162
2163                         table = iptr->dst.table;
2164
2165                         l = iptr->sx.s23.s2.tablelow;
2166                         i = iptr->sx.s23.s3.tablehigh;
2167
2168                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2169                         if (l == 0)
2170                                 M_INTMOVE(s1, REG_ITMP1);
2171                         else if (l <= 32768)
2172                                 M_LDA(REG_ITMP1, s1, -l);
2173                         else {
2174                                 ICONST(REG_ITMP2, l);
2175                                 M_ISUB(s1, REG_ITMP2, REG_ITMP1);
2176                         }
2177
2178                         i = i - l + 1;
2179
2180                         /* range check */
2181
2182                         M_CMPUI(REG_ITMP1, i - 1);
2183                         emit_bgt(cd, table[0].block);
2184
2185                         /* build jump table top down and use address of lowest entry */
2186
2187                         table += i;
2188
2189                         while (--i >= 0) {
2190                                 dseg_add_target(cd, table->block);
2191                                 --table;
2192                         }
2193
2194                         /* length of dataseg after last dseg_add_target is used by load */
2195
2196                         M_SLL_IMM(REG_ITMP1, 2, REG_ITMP1);
2197                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
2198                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
2199                         M_MTCTR(REG_ITMP2);
2200                         M_RTS;
2201                         ALIGNCODENOP;
2202                         }
2203                         break;
2204
2205
2206                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
2207                         {
2208                         s4 i;
2209                         lookup_target_t *lookup;
2210
2211                         lookup = iptr->dst.lookup;
2212
2213                         i = iptr->sx.s23.s2.lookupcount;
2214
2215                         MCODECHECK((i<<2)+8);
2216                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2217
2218                         while (--i >= 0) {
2219                                 if ((lookup->value >= -32768) && (lookup->value <= 32767)) {
2220                                         M_CMPI(s1, lookup->value);
2221                                 }
2222                                 else {
2223                                         disp = dseg_add_s4(cd, lookup->value);
2224                                         M_ILD(REG_ITMP2, REG_PV, disp);
2225                                         M_CMP(s1, REG_ITMP2);
2226                                 }
2227                                 emit_beq(cd, lookup->target.block);
2228                                 lookup++;
2229                         }
2230
2231                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
2232                         ALIGNCODENOP;
2233                         break;
2234                         }
2235
2236
2237                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2238
2239                         REPLACEMENT_POINT_FORGC_BUILTIN(cd, iptr);
2240
2241                         bte = iptr->sx.s23.s3.bte;
2242                         md  = bte->md;
2243                         goto gen_method;
2244
2245                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2246
2247                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2248                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2249                 case ICMD_INVOKEINTERFACE:
2250
2251                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2252
2253                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2254                                 lm = NULL;
2255                                 um = iptr->sx.s23.s3.um;
2256                                 md = um->methodref->parseddesc.md;
2257                         }
2258                         else {
2259                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2260                                 um = NULL;
2261                                 md = lm->parseddesc;
2262                         }
2263
2264 gen_method:
2265                         s3 = md->paramcount;
2266
2267                         MCODECHECK((s3 << 1) + 64);
2268
2269                         /* copy arguments to registers or stack location */
2270
2271                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2272                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2273                                 d   = md->params[s3].regoff;
2274
2275                                 /* Already Preallocated? */
2276                                 if (var->flags & PREALLOC)
2277                                         continue;
2278
2279                                 if (IS_INT_LNG_TYPE(var->type)) {
2280                                         if (!md->params[s3].inmemory) {
2281                                                 if (IS_2_WORD_TYPE(var->type)) {
2282                                                         s1 = emit_load(jd, iptr, var, d);
2283                                                         M_LNGMOVE(s1, d);
2284                                                 }
2285                                                 else {
2286                                                         s1 = emit_load(jd, iptr, var, d);
2287                                                         M_INTMOVE(s1, d);
2288                                                 }
2289                                         }
2290                                         else {
2291                                                 if (IS_2_WORD_TYPE(var->type)) {
2292                                                         s1 = emit_load(jd, iptr, var, REG_ITMP12_PACKED);
2293                                                         M_LST(s1, REG_SP, d);
2294                                                 }
2295                                                 else {
2296                                                         s1 = emit_load(jd, iptr, var, REG_ITMP1);
2297                                                         M_IST(s1, REG_SP, d);
2298                                                 }
2299                                         }
2300                                 }
2301                                 else {
2302                                         if (!md->params[s3].inmemory) {
2303                                                 s1 = emit_load(jd, iptr, var, d);
2304                                                 M_FLTMOVE(s1, d);
2305                                         }
2306                                         else {
2307                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2308                                                 M_DST(s1, REG_SP, d);
2309                                         }
2310                                 }
2311                         }
2312
2313                         switch (iptr->opc) {
2314                         case ICMD_BUILTIN:
2315                                 if (bte->stub == NULL)
2316                                         disp = dseg_add_functionptr(cd, bte->fp);
2317                                 else
2318                                         disp = dseg_add_functionptr(cd, bte->stub);
2319
2320                                 M_ALD(REG_PV, REG_PV, disp);  /* pointer to built-in-function */
2321
2322                                 /* generate the actual call */
2323
2324                                 M_MTCTR(REG_PV);
2325                                 M_JSR;
2326                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2327                                 REPLACEMENT_POINT_FORGC_BUILTIN_RETURN(cd, iptr);
2328                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2329                                 M_MFLR(REG_ITMP1);
2330                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2331                                 break;
2332
2333                         case ICMD_INVOKESPECIAL:
2334                                 emit_nullpointer_check(cd, iptr, REG_A0);
2335                                 /* fall-through */
2336
2337                         case ICMD_INVOKESTATIC:
2338                                 if (lm == NULL) {
2339                                         disp = dseg_add_unique_address(cd, um);
2340
2341                                         patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
2342                                                                                 um, disp);
2343                                 }
2344                                 else
2345                                         disp = dseg_add_address(cd, lm->stubroutine);
2346
2347                                 M_ALD(REG_PV, REG_PV, disp);
2348
2349                                 /* generate the actual call */
2350
2351                                 M_MTCTR(REG_PV);
2352                                 M_JSR;
2353                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2354                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2355                                 M_MFLR(REG_ITMP1);
2356                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2357                                 break;
2358
2359                         case ICMD_INVOKEVIRTUAL:
2360                                 if (lm == NULL) {
2361                                         patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
2362
2363                                         s1 = 0;
2364                                 }
2365                                 else {
2366                                         s1 = OFFSET(vftbl_t, table[0]) +
2367                                                 sizeof(methodptr) * lm->vftblindex;
2368                                 }
2369
2370                                 /* implicit null-pointer check */
2371                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2372                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2373
2374                                 /* generate the actual call */
2375
2376                                 M_MTCTR(REG_PV);
2377                                 M_JSR;
2378                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2379                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2380                                 M_MFLR(REG_ITMP1);
2381                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2382                                 break;
2383
2384                         case ICMD_INVOKEINTERFACE:
2385                                 if (lm == NULL) {
2386                                         patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
2387
2388                                         s1 = 0;
2389                                         s2 = 0;
2390                                 }
2391                                 else {
2392                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2393                                                 sizeof(methodptr*) * lm->class->index;
2394
2395                                         s2 = sizeof(methodptr) * (lm - lm->class->methods);
2396                                 }
2397
2398                                 /* implicit null-pointer check */
2399                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2400                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2401                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2402
2403                                 /* generate the actual call */
2404
2405                                 M_MTCTR(REG_PV);
2406                                 M_JSR;
2407                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2408                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2409                                 M_MFLR(REG_ITMP1);
2410                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2411                                 break;
2412                         }
2413
2414                         /* store return value */
2415
2416                         d = md->returntype.type;
2417
2418                         if (d != TYPE_VOID) {
2419                                 if (IS_INT_LNG_TYPE(d)) {
2420                                         if (IS_2_WORD_TYPE(d)) {
2421                                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
2422                                                 M_LNGMOVE(REG_RESULT_PACKED, s1);
2423                                         }
2424                                         else {
2425                                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2426                                                 M_INTMOVE(REG_RESULT, s1);
2427                                         }
2428                                 }
2429                                 else {
2430                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2431                                         M_FLTMOVE(REG_FRESULT, s1);
2432                                 }
2433                                 emit_store_dst(jd, iptr, s1);
2434                         }
2435                         break;
2436
2437
2438                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2439
2440                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2441                                 /* object type cast-check */
2442
2443                                 classinfo *super;
2444                                 s4         superindex;
2445
2446                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2447                                         super      = NULL;
2448                                         superindex = 0;
2449                                 }
2450                                 else {
2451                                         super      = iptr->sx.s23.s3.c.cls;
2452                                         superindex = super->index;
2453                                 }
2454
2455                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2456                                         CODEGEN_CRITICAL_SECTION_NEW;
2457
2458                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2459
2460                                 /* if class is not resolved, check which code to call */
2461
2462                                 if (super == NULL) {
2463                                         M_TST(s1);
2464                                         emit_label_beq(cd, BRANCH_LABEL_1);
2465
2466                                         disp = dseg_add_unique_s4(cd, 0);         /* super->flags */
2467
2468                                         patcher_add_patch_ref(jd,
2469                                                                                 PATCHER_resolve_classref_to_flags,
2470                                                                                 iptr->sx.s23.s3.c.ref,
2471                                                                                 disp);
2472
2473                                         M_ILD(REG_ITMP2, REG_PV, disp);
2474                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2475                                         emit_label_beq(cd, BRANCH_LABEL_2);
2476                                 }
2477
2478                                 /* interface checkcast code */
2479
2480                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2481                                         if (super == NULL) {
2482                                                 patcher_add_patch_ref(jd,
2483                                                                                         PATCHER_checkcast_interface,
2484                                                                                         iptr->sx.s23.s3.c.ref,
2485                                                                                         0);
2486                                         }
2487                                         else {
2488                                                 M_TST(s1);
2489                                                 emit_label_beq(cd, BRANCH_LABEL_3);
2490                                         }
2491
2492                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2493                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2494                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2495                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2496
2497                                         M_ALD(REG_ITMP3, REG_ITMP2,
2498                                                   OFFSET(vftbl_t, interfacetable[0]) -
2499                                                   superindex * sizeof(methodptr*));
2500                                         M_TST(REG_ITMP3);
2501                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2502
2503                                         if (super == NULL)
2504                                                 emit_label_br(cd, BRANCH_LABEL_4);
2505                                         else
2506                                                 emit_label(cd, BRANCH_LABEL_3);
2507                                 }
2508
2509                                 /* class checkcast code */
2510
2511                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2512                                         if (super == NULL) {
2513                                                 emit_label(cd, BRANCH_LABEL_2);
2514
2515                                                 disp = dseg_add_unique_address(cd, NULL);
2516
2517                                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2518                                                                                         iptr->sx.s23.s3.c.ref,
2519                                                                                         disp);
2520                                         }
2521                                         else {
2522                                                 disp = dseg_add_address(cd, super->vftbl);
2523
2524                                                 M_TST(s1);
2525                                                 emit_label_beq(cd, BRANCH_LABEL_5);
2526                                         }
2527
2528                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2529
2530                                         CODEGEN_CRITICAL_SECTION_START;
2531
2532                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2533                                         M_ALD(REG_ITMP2, REG_PV, disp);
2534                                         if (s1 != REG_ITMP1) {
2535                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2536                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2537
2538                                                 CODEGEN_CRITICAL_SECTION_END;
2539
2540                                                 M_ISUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2541                                         }
2542                                         else {
2543                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2544                                                 M_ISUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2545                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2546                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2547
2548                                                 CODEGEN_CRITICAL_SECTION_END;
2549                                         }
2550                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2551                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2552
2553                                         if (super != NULL)
2554                                                 emit_label(cd, BRANCH_LABEL_5);
2555                                 }
2556
2557                                 if (super == NULL) {
2558                                         emit_label(cd, BRANCH_LABEL_1);
2559                                         emit_label(cd, BRANCH_LABEL_4);
2560                                 }
2561
2562                                 d = codegen_reg_of_dst(jd, iptr, s1);
2563                         }
2564                         else {
2565                                 /* array type cast-check */
2566
2567                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2568                                 M_INTMOVE(s1, REG_A0);
2569
2570                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2571                                         disp = dseg_add_unique_address(cd, NULL);
2572
2573                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2574                                                                                 iptr->sx.s23.s3.c.ref,
2575                                                                                 disp);
2576                                 }
2577                                 else
2578                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2579
2580                                 M_ALD(REG_A1, REG_PV, disp);
2581                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2582                                 M_ALD(REG_ITMP2, REG_PV, disp);
2583                                 M_MTCTR(REG_ITMP2);
2584                                 M_JSR;
2585                                 M_TST(REG_RESULT);
2586                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2587
2588                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2589                                 d = codegen_reg_of_dst(jd, iptr, s1);
2590                         }
2591                         M_INTMOVE(s1, d);
2592                         emit_store_dst(jd, iptr, d);
2593                         break;
2594
2595                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2596
2597                         {
2598                         classinfo *super;
2599                         s4         superindex;
2600
2601                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2602                                 super      = NULL;
2603                                 superindex = 0;
2604                         }
2605                         else {
2606                                 super      = iptr->sx.s23.s3.c.cls;
2607                                 superindex = super->index;
2608                         }
2609
2610                         if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2611                                 CODEGEN_CRITICAL_SECTION_NEW;
2612
2613                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2614
2615                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2616                         if (s1 == d) {
2617                                 M_MOV(s1, REG_ITMP1);
2618                                 s1 = REG_ITMP1;
2619                         }
2620
2621                         M_CLR(d);
2622
2623                         /* if class is not resolved, check which code to call */
2624
2625                         if (super == NULL) {
2626                                 M_TST(s1);
2627                                 emit_label_beq(cd, BRANCH_LABEL_1);
2628
2629                                 disp = dseg_add_unique_s4(cd, 0);             /* super->flags */
2630
2631                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
2632                                                                         iptr->sx.s23.s3.c.ref, disp);
2633
2634                                 M_ILD(REG_ITMP3, REG_PV, disp);
2635                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2636                                 emit_label_beq(cd, BRANCH_LABEL_2);
2637                         }
2638
2639                         /* interface instanceof code */
2640
2641                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2642                                 if (super == NULL) {
2643                                         patcher_add_patch_ref(jd,
2644                                                                                 PATCHER_instanceof_interface,
2645                                                                                 iptr->sx.s23.s3.c.ref, 0);
2646                                 }
2647                                 else {
2648                                         M_TST(s1);
2649                                         emit_label_beq(cd, BRANCH_LABEL_3);
2650                                 }
2651
2652                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2653                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2654                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2655                                 M_BLE(4);
2656                                 M_ALD(REG_ITMP1, REG_ITMP1,
2657                                           OFFSET(vftbl_t, interfacetable[0]) -
2658                                           superindex * sizeof(methodptr*));
2659                                 M_TST(REG_ITMP1);
2660                                 M_BEQ(1);
2661                                 M_IADD_IMM(REG_ZERO, 1, d);
2662
2663                                 if (super == NULL)
2664                                         emit_label_br(cd, BRANCH_LABEL_4);
2665                                 else
2666                                         emit_label(cd, BRANCH_LABEL_3);
2667                         }
2668
2669                         /* class instanceof code */
2670
2671                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2672                                 if (super == NULL) {
2673                                         emit_label(cd, BRANCH_LABEL_2);
2674
2675                                         disp = dseg_add_unique_address(cd, NULL);
2676
2677                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2678                                                                                 iptr->sx.s23.s3.c.ref,
2679                                                                                 disp);
2680                                 }
2681                                 else {
2682                                         disp = dseg_add_address(cd, super->vftbl);
2683
2684                                         M_TST(s1);
2685                                         emit_label_beq(cd, BRANCH_LABEL_5);
2686                                 }
2687
2688                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2689                                 M_ALD(REG_ITMP2, REG_PV, disp);
2690
2691                                 CODEGEN_CRITICAL_SECTION_START;
2692
2693                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2694                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2695                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2696
2697                                 CODEGEN_CRITICAL_SECTION_END;
2698
2699                                 M_ISUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2700                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2701                                 M_CLR(d);
2702                                 M_BGT(1);
2703                                 M_IADD_IMM(REG_ZERO, 1, d);
2704
2705                                 if (super != NULL)
2706                                         emit_label(cd, BRANCH_LABEL_5);
2707                         }
2708
2709                         if (super == NULL) {
2710                                 emit_label(cd, BRANCH_LABEL_1);
2711                                 emit_label(cd, BRANCH_LABEL_4);
2712                         }
2713
2714                         emit_store_dst(jd, iptr, d);
2715                         }
2716                         break;
2717
2718                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2719
2720                         /* check for negative sizes and copy sizes to stack if necessary  */
2721
2722                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2723
2724                         for (s1 = iptr->s1.argcount; --s1 >= 0;) {
2725                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2726
2727                                 /* copy SAVEDVAR sizes to stack */
2728
2729                                 /* Already Preallocated? */
2730                                 if (!(var->flags & PREALLOC)) {
2731                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2732 #if defined(__DARWIN__)
2733                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 4);
2734 #else
2735                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + 3) * 4);
2736 #endif
2737                                 }
2738                         }
2739
2740                         /* a0 = dimension count */
2741
2742                         ICONST(REG_A0, iptr->s1.argcount);
2743
2744                         /* is patcher function set? */
2745
2746                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2747                                 disp = dseg_add_unique_address(cd, NULL);
2748
2749                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2750                                                                         iptr->sx.s23.s3.c.ref, disp);
2751                         }
2752                         else
2753                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2754
2755                         /* a1 = arraydescriptor */
2756
2757                         M_ALD(REG_A1, REG_PV, disp);
2758
2759                         /* a2 = pointer to dimensions = stack pointer */
2760
2761 #if defined(__DARWIN__)
2762                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 4);
2763 #else
2764                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 4);
2765 #endif
2766
2767                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2768                         M_ALD(REG_ITMP3, REG_PV, disp);
2769                         M_MTCTR(REG_ITMP3);
2770                         M_JSR;
2771
2772                         /* check for exception before result assignment */
2773
2774                         emit_exception_check(cd, iptr);
2775
2776                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2777                         M_INTMOVE(REG_RESULT, d);
2778                         emit_store_dst(jd, iptr, d);
2779                         break;
2780
2781                 default:
2782                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2783                                                                                    iptr->opc);
2784                         return false;
2785         } /* switch */
2786
2787         } /* for instruction */
2788
2789         } /* if (bptr -> flags >= BBREACHED) */
2790         } /* for basic block */
2791
2792         dseg_createlinenumbertable(cd);
2793
2794         /* generate traps */
2795
2796         emit_patcher_traps(jd);
2797
2798         /* everything's ok */
2799
2800         return true;
2801 }
2802
2803
2804 /* codegen_emit_stub_native ****************************************************
2805
2806    Emits a stub routine which calls a native method.
2807
2808 *******************************************************************************/
2809
2810 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f, int skipparams)
2811 {
2812         methodinfo  *m;
2813         codeinfo    *code;
2814         codegendata *cd;
2815         methoddesc  *md;
2816         s4           i, j;                 /* count variables                    */
2817         s4           t;
2818         s4           s1, s2;
2819         int          disp;
2820
2821         /* get required compiler data */
2822
2823         m    = jd->m;
2824         code = jd->code;
2825         cd   = jd->cd;
2826
2827         /* set some variables */
2828
2829         md = m->parseddesc;
2830
2831         /* calculate stackframe size */
2832
2833         cd->stackframesize =
2834                 sizeof(stackframeinfo_t) / SIZEOF_VOID_P +
2835                 sizeof(localref_table) / SIZEOF_VOID_P +
2836                 4 +                            /* 4 stackframeinfo arguments (darwin) */
2837                 nmd->paramcount +
2838                 nmd->memuse;
2839
2840         /* keep stack 16-byte aligned */
2841
2842         ALIGN_2(cd->stackframesize);
2843
2844         /* create method header */
2845
2846         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
2847         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
2848         (void) dseg_add_unique_s4(cd, 0);                      /* IsSync          */
2849         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
2850         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
2851         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
2852         (void) dseg_addlinenumbertablesize(cd);
2853         (void) dseg_add_unique_s4(cd, 0);                      /* ExTableSize     */
2854
2855         /* generate code */
2856
2857         M_MFLR(REG_ZERO);
2858         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
2859         M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 8));
2860
2861 #if defined(ENABLE_GC_CACAO)
2862         /* Save callee saved integer registers in stackframeinfo (GC may
2863            need to recover them during a collection). */
2864
2865         disp = cd->stackframesize * 8 - sizeof(stackframeinfo_t) +
2866                 OFFSET(stackframeinfo_t, intregs);
2867
2868         for (i = 0; i < INT_SAV_CNT; i++)
2869                 M_AST(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
2870 #endif
2871
2872         /* save integer and float argument registers */
2873
2874         for (i = 0; i < md->paramcount; i++) {
2875                 if (!md->params[i].inmemory) {
2876                         s1 = md->params[i].regoff;
2877
2878                         switch (md->paramtypes[i].type) {
2879                         case TYPE_INT:
2880                         case TYPE_ADR:
2881                                 M_IST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2882                                 break;
2883                         case TYPE_LNG:
2884                                 M_LST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2885                                 break;
2886                         case TYPE_FLT:
2887                         case TYPE_DBL:
2888                                 M_DST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2889                                 break;
2890                         }
2891                 }
2892         }
2893
2894         /* create native stack info */
2895
2896         M_MOV(REG_SP, REG_A0);
2897         M_MOV(REG_PV, REG_A1);
2898         disp = dseg_add_functionptr(cd, codegen_start_native_call);
2899         M_ALD(REG_ITMP1, REG_PV, disp);
2900         M_MTCTR(REG_ITMP1);
2901         M_JSR;
2902
2903         /* remember class argument */
2904
2905         if (m->flags & ACC_STATIC)
2906                 M_MOV(REG_RESULT, REG_ITMP3);
2907
2908         /* restore integer and float argument registers */
2909
2910         for (i = 0; i < md->paramcount; i++) {
2911                 if (!md->params[i].inmemory) {
2912                         s1 = md->params[i].regoff;
2913
2914                         switch (md->paramtypes[i].type) {
2915                         case TYPE_INT:
2916                         case TYPE_ADR:
2917                                 M_ILD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2918                                 break;
2919                         case TYPE_LNG:
2920                                 M_LLD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2921                                 break;
2922                         case TYPE_FLT:
2923                         case TYPE_DBL:
2924                                 M_DLD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
2925                                 break;
2926                         }
2927                 }
2928         }
2929
2930         /* copy or spill arguments to new locations */
2931
2932         for (i = md->paramcount - 1, j = i + skipparams; i >= 0; i--, j--) {
2933                 t = md->paramtypes[i].type;
2934
2935                 if (IS_INT_LNG_TYPE(t)) {
2936                         if (!md->params[i].inmemory) {
2937                                 s1 = md->params[i].regoff;
2938                                 s2 = nmd->params[j].regoff;
2939
2940                                 if (!nmd->params[j].inmemory) {
2941                                         if (IS_2_WORD_TYPE(t))
2942                                                 M_LNGMOVE(s1, s2);
2943                                         else
2944                                                 M_INTMOVE(s1, s2);
2945                                 }
2946                                 else {
2947                                         if (IS_2_WORD_TYPE(t))
2948                                                 M_LST(s1, REG_SP, s2);
2949                                         else
2950                                                 M_IST(s1, REG_SP, s2);
2951                                 }
2952                         }
2953                         else {
2954                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
2955                                 s2 = nmd->params[j].regoff;
2956
2957                                 M_ILD(REG_ITMP1, REG_SP, s1);
2958                                 if (IS_2_WORD_TYPE(t))
2959                                         M_ILD(REG_ITMP2, REG_SP, s1 + 4);
2960
2961                                 M_IST(REG_ITMP1, REG_SP, s2);
2962                                 if (IS_2_WORD_TYPE(t))
2963                                         M_IST(REG_ITMP2, REG_SP, s2 + 4);
2964                         }
2965                 }
2966                 else {
2967                         /* We only copy spilled float arguments, as the float
2968                            argument registers keep unchanged. */
2969
2970                         if (md->params[i].inmemory) {
2971                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
2972                                 s2 = nmd->params[j].regoff;
2973
2974                                 M_DLD(REG_FTMP1, REG_SP, s1);
2975
2976                                 if (IS_2_WORD_TYPE(t))
2977                                         M_DST(REG_FTMP1, REG_SP, s2);
2978                                 else
2979                                         M_FST(REG_FTMP1, REG_SP, s2);
2980                         }
2981                 }
2982         }
2983
2984         /* Handle native Java methods. */
2985
2986         if (m->flags & ACC_NATIVE) {
2987                 /* put class into second argument register */
2988
2989                 if (m->flags & ACC_STATIC)
2990                         M_MOV(REG_ITMP3, REG_A1);
2991
2992                 /* put env into first argument register */
2993
2994                 disp = dseg_add_address(cd, _Jv_env);
2995                 M_ALD(REG_A0, REG_PV, disp);
2996         }
2997
2998         /* Call the native function. */
2999
3000         disp = dseg_add_functionptr(cd, f);
3001         M_ALD(REG_ITMP3, REG_PV, disp);
3002         M_MTCTR(REG_ITMP3);
3003         M_JSR;
3004
3005         /* save return value */
3006
3007         switch (md->returntype.type) {
3008         case TYPE_INT:
3009         case TYPE_ADR:
3010                 M_IST(REG_RESULT, REG_SP, LA_SIZE + 2 * 4);
3011                 break;
3012         case TYPE_LNG:
3013                 M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + 2 * 4);
3014                 break;
3015         case TYPE_FLT:
3016         case TYPE_DBL:
3017                 M_DST(REG_FRESULT, REG_SP, LA_SIZE + 2 * 4);
3018                 break;
3019         case TYPE_VOID:
3020                 break;
3021         }
3022
3023         /* remove native stackframe info */
3024
3025         M_MOV(REG_SP, REG_A0);
3026         M_MOV(REG_PV, REG_A1);
3027         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
3028         M_ALD(REG_ITMP1, REG_PV, disp);
3029         M_MTCTR(REG_ITMP1);
3030         M_JSR;
3031         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
3032
3033         /* restore return value */
3034
3035         switch (md->returntype.type) {
3036         case TYPE_INT:
3037         case TYPE_ADR:
3038                 M_ILD(REG_RESULT, REG_SP, LA_SIZE + 2 * 4);
3039                 break;
3040         case TYPE_LNG:
3041                 M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + 2 * 4);
3042                 break;
3043         case TYPE_FLT:
3044         case TYPE_DBL:
3045                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + 2 * 4);
3046                 break;
3047         case TYPE_VOID:
3048                 break;
3049         }
3050
3051 #if defined(ENABLE_GC_CACAO)
3052         /* Restore callee saved integer registers from stackframeinfo (GC
3053            might have modified them during a collection). */
3054
3055         disp = cd->stackframesize * 8 - sizeof(stackframeinfo_t) +
3056                 OFFSET(stackframeinfo_t, intregs);
3057
3058         for (i = 0; i < INT_SAV_CNT; i++)
3059                 M_ALD(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
3060 #endif
3061
3062         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
3063         M_MTLR(REG_ITMP2_XPC);
3064         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe       */
3065
3066         /* check for exception */
3067
3068         M_TST(REG_ITMP1_XPTR);
3069         M_BNE(1);                           /* if no exception then return        */
3070
3071         M_RET;
3072
3073         /* handle exception */
3074
3075         M_IADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
3076
3077         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
3078         M_ALD(REG_ITMP3, REG_PV, disp);
3079         M_MTCTR(REG_ITMP3);
3080         M_RTS;
3081 }
3082
3083
3084 /*
3085  * These are local overrides for various environment variables in Emacs.
3086  * Please do not remove this and leave it at the end of the file, where
3087  * Emacs will automagically detect them.
3088  * ---------------------------------------------------------------------
3089  * Local variables:
3090  * mode: c
3091  * indent-tabs-mode: t
3092  * c-basic-offset: 4
3093  * tab-width: 4
3094  * End:
3095  * vim:noexpandtab:sw=4:ts=4:
3096  */