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    $Id: codegen.c 7918 2007-05-20 20:42:18Z michi $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <stdio.h>
  34 #include <signal.h>
  35
  36 #include "vm/types.h"
  37
  38 #include "md-abi.h"
  39
  40 #include "vm/jit/powerpc/arch.h"
  41 #include "vm/jit/powerpc/codegen.h"
  42
  43 #include "mm/memory.h"
  44
  45 #include "native/native.h"
  46
  47 #include "threads/lock-common.h"
  48
  49 #include "vm/builtin.h"
  50 #include "vm/exceptions.h"
  51 #include "vm/global.h"
  52 #include "vm/stringlocal.h"
  53 #include "vm/vm.h"
  54
  55 #include "vm/jit/abi.h"
  56 #include "vm/jit/abi-asm.h"
  57 #include "vm/jit/asmpart.h"
  58 #include "vm/jit/codegen-common.h"
  59 #include "vm/jit/dseg.h"
  60 #include "vm/jit/emit-common.h"
  61 #include "vm/jit/jit.h"
  62 #include "vm/jit/md.h"
  63 #include "vm/jit/methodheader.h"
  64 #include "vm/jit/parse.h"
  65 #include "vm/jit/patcher.h"
  66 #include "vm/jit/reg.h"
  67 #include "vm/jit/replace.h"
  68 #include "vm/jit/stacktrace.h"
  69
  70 #if defined(ENABLE_LSRA)
  71 # include "vm/jit/allocator/lsra.h"
  72 #endif
  73
  74 #include "vmcore/loader.h"
  75 #include "vmcore/options.h"
  76
  77
  78 /* codegen *********************************************************************
  79
  80    Generates machine code.
  81
  82 *******************************************************************************/
  83
  84 bool codegen_emit(jitdata *jd)
  85 {
  86         methodinfo         *m;
  87         codeinfo           *code;
  88         codegendata        *cd;
  89         registerdata       *rd;
  90         s4                  len, s1, s2, s3, d, disp;
  91         ptrint              a;
  92         varinfo            *var;
  93         basicblock         *bptr;
  94         instruction        *iptr;
  95         exception_entry    *ex;
  96         u2                  currentline;
  97         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  98         unresolved_method  *um;
  99         builtintable_entry *bte;
 100         methoddesc         *md;
 101         fieldinfo          *fi;
 102         unresolved_field   *uf;
 103         s4                  fieldtype;
 104         s4                 varindex;
 105
 106         /* get required compiler data */
 107
 108         m    = jd->m;
 109         code = jd->code;
 110         cd   = jd->cd;
 111         rd   = jd->rd;
 112
 113         /* prevent compiler warnings */
 114
 115         d         = 0;
 116         fieldtype = 0;
 117         lm        = NULL;
 118         um        = NULL;
 119         uf        = NULL;
 120         bte       = NULL;
 121
 122         {
 123         s4 i, p, t, l;
 124         s4 savedregs_num;
 125
 126         savedregs_num = 0;
 127
 128         /* space to save used callee saved registers */
 129
 130         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 131         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse) * 2;
 132
 133         cd->stackframesize = rd->memuse + savedregs_num;
 134
 135 #if defined(ENABLE_THREADS)
 136         /* Space to save argument of monitor_enter and Return Values to
 137            survive monitor_exit. The stack position for the argument can
 138            not be shared with place to save the return register on PPC,
 139            since both values reside in R3. */
 140
 141         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 142                 /* reserve 2 slots for long/double return values for monitorexit */
 143
 144                 if (IS_2_WORD_TYPE(m->parseddesc->returntype.type))
 145                         cd->stackframesize += 3;
 146                 else
 147                         cd->stackframesize += 2;
 148         }
 149
 150 #endif
 151
 152         /* create method header */
 153
 154         /* align stack to 16-bytes */
 155
 156         if (!jd->isleafmethod || JITDATA_HAS_FLAG_VERBOSECALL(jd))
 157                 cd->stackframesize = (cd->stackframesize + 3) & ~3;
 158
 159         else if (jd->isleafmethod && (cd->stackframesize == LA_SIZE_IN_POINTERS))
 160                 cd->stackframesize = 0;
 161
 162         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
 163         (void) dseg_add_unique_s4(cd, cd->stackframesize * 4); /* FrameSize       */
 164
 165 #if defined(ENABLE_THREADS)
 166         /* IsSync contains the offset relative to the stack pointer for the
 167            argument of monitor_exit used in the exception handler. Since the
 168            offset could be zero and give a wrong meaning of the flag it is
 169            offset by one.
 170         */
 171
 172         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 173                 (void) dseg_add_unique_s4(cd, (rd->memuse + 1) * 4);/* IsSync         */
 174         else
 175 #endif
 176                 (void) dseg_add_unique_s4(cd, 0);                  /* IsSync          */
 177
 178         (void) dseg_add_unique_s4(cd, jd->isleafmethod);       /* IsLeaf          */
 179         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave */
 180         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave */
 181
 182         dseg_addlinenumbertablesize(cd);
 183
 184         (void) dseg_add_unique_s4(cd, jd->exceptiontablelength); /* ExTableSize   */
 185
 186         /* create exception table */
 187
 188         for (ex = jd->exceptiontable; ex != NULL; ex = ex->down) {
 189                 dseg_add_target(cd, ex->start);
 190                 dseg_add_target(cd, ex->end);
 191                 dseg_add_target(cd, ex->handler);
 192                 (void) dseg_add_unique_address(cd, ex->catchtype.any);
 193         }
 194
 195 #if defined(ENABLE_PROFILING)
 196         /* generate method profiling code */
 197
 198         if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 199                 /* count frequency */
 200
 201                 M_ALD(REG_ITMP1, REG_PV, CodeinfoPointer);
 202                 M_ALD(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 203                 M_IADD_IMM(REG_ITMP2, 1, REG_ITMP2);
 204                 M_AST(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 205
 206 /*              PROFILE_CYCLE_START; */
 207         }
 208 #endif
 209
 210         /* create stack frame (if necessary) */
 211
 212         if (!jd->isleafmethod) {
 213                 M_MFLR(REG_ZERO);
 214                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 215         }
 216
 217         if (cd->stackframesize)
 218                 M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 4));
 219
 220         /* save return address and used callee saved registers */
 221
 222         p = cd->stackframesize;
 223         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 224                 p--; M_IST(rd->savintregs[i], REG_SP, p * 4);
 225         }
 226         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 227                 p -= 2; M_DST(rd->savfltregs[i], REG_SP, p * 4);
 228         }
 229
 230         /* take arguments out of register or stack frame */
 231
 232         md = m->parseddesc;
 233
 234         for (p = 0, l = 0; p < md->paramcount; p++) {
 235                 t = md->paramtypes[p].type;
 236                 varindex = jd->local_map[l * 5 + t];
 237
 238                 l++;
 239                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 240                         l++;
 241
 242                 if (varindex == UNUSED)
 243                         continue;
 244
 245                 var = VAR(varindex);
 246                 s1  = md->params[p].regoff;
 247
 248                 if (IS_INT_LNG_TYPE(t)) {
 249                         if (!md->params[p].inmemory) {
 250                                 if (!IS_INMEMORY(var->flags)) {
 251                                         if (IS_2_WORD_TYPE(t))
 252                                                 M_LNGMOVE(s1, var->vv.regoff);
 253                                         else
 254                                                 M_INTMOVE(s1, var->vv.regoff);
 255                                 }
 256                                 else {
 257                                         if (IS_2_WORD_TYPE(t))
 258                                                 M_LST(s1, REG_SP, var->vv.regoff * 4);
 259                                         else
 260                                                 M_IST(s1, REG_SP, var->vv.regoff * 4);
 261                                 }
 262                         }
 263                         else {
 264                                 if (!IS_INMEMORY(var->flags)) {
 265                                         if (IS_2_WORD_TYPE(t))
 266                                                 M_LLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 4);
 267                                         else
 268                                                 M_ILD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 4);
 269                                 }
 270                                 else {
 271 #if 1
 272                                         M_ILD(REG_ITMP1, REG_SP, (cd->stackframesize + s1) * 4);
 273                                         M_IST(REG_ITMP1, REG_SP, var->vv.regoff * 4);
 274                                         if (IS_2_WORD_TYPE(t)) {
 275                                                 M_ILD(REG_ITMP1, REG_SP, (cd->stackframesize + s1) * 4 +4);
 276                                                 M_IST(REG_ITMP1, REG_SP, var->vv.regoff * 4 + 4);
 277                                         }
 278 #else
 279                                         /* Reuse Memory Position on Caller Stack */
 280                                         var->vv.regoff = cd->stackframesize + s1;
 281 #endif
 282                                 }
 283                         }
 284                 }
 285                 else {
 286                         if (!md->params[p].inmemory) {
 287                                 if (!IS_INMEMORY(var->flags))
 288                                         M_FLTMOVE(s1, var->vv.regoff);
 289                                 else {
 290                                         if (IS_2_WORD_TYPE(t))
 291                                                 M_DST(s1, REG_SP, var->vv.regoff * 4);
 292                                         else
 293                                                 M_FST(s1, REG_SP, var->vv.regoff * 4);
 294                                 }
 295                         }
 296                         else {
 297                                 if (!IS_INMEMORY(var->flags)) {
 298                                         if (IS_2_WORD_TYPE(t))
 299                                                 M_DLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 4);
 300                                         else
 301                                                 M_FLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 4);
 302                                 }
 303                                 else {
 304 #if 1
 305                                         if (IS_2_WORD_TYPE(t)) {
 306                                                 M_DLD(REG_FTMP1, REG_SP, (cd->stackframesize + s1) * 4);
 307                                                 M_DST(REG_FTMP1, REG_SP, var->vv.regoff * 4);
 308                                                 var->vv.regoff = cd->stackframesize + s1;
 309
 310                                         } else {
 311                                                 M_FLD(REG_FTMP1, REG_SP, (cd->stackframesize + s1) * 4);
 312                                                 M_FST(REG_FTMP1, REG_SP, var->vv.regoff * 4);
 313                                         }
 314 #else
 315                                         /* Reuse Memory Position on Caller Stack */
 316                                         var->vv.regoff = cd->stackframesize + s1;
 317 #endif
 318                                 }
 319                         }
 320                 }
 321         }
 322
 323 #if defined(ENABLE_THREADS)
 324         /* call monitorenter function */
 325
 326         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 327                 /* stack offset for monitor argument */
 328
 329                 s1 = rd->memuse;
 330
 331 # if !defined(NDEBUG)
 332                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 333                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 334
 335                         for (p = 0; p < INT_ARG_CNT; p++)
 336                                 M_IST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 337
 338                         for (p = 0; p < FLT_ARG_CNT; p++)
 339                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 340
 341                         /* ATTENTION: We multiply here with 2, because we use * 8
 342                            above for simplicity and below * 4! */
 343
 344                         s1 += (LA_SIZE_IN_POINTERS + ARG_CNT) * 2;
 345                 }
 346 # endif
 347
 348                 disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
 349                 M_ALD(REG_ITMP3, REG_PV, disp);
 350                 M_MTCTR(REG_ITMP3);
 351
 352                 /* get or test the lock object */
 353
 354                 if (m->flags & ACC_STATIC) {
 355                         disp = dseg_add_address(cd, &m->class->object.header);
 356                         M_ALD(REG_A0, REG_PV, disp);
 357                 }
 358                 else {
 359                         M_TST(REG_A0);
 360                         M_BNE(1);
 361                         M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
 362                 }
 363
 364                 M_AST(REG_A0, REG_SP, s1 * 4);
 365                 M_JSR;
 366
 367 # if !defined(NDEBUG)
 368                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 369                         for (p = 0; p < INT_ARG_CNT; p++)
 370                                 M_ILD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 371
 372                         for (p = 0; p < FLT_ARG_CNT; p++)
 373                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 374
 375                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 376                 }
 377 # endif
 378         }
 379 #endif /* defined(ENABLE_THREADS) */
 380
 381         /* call trace function */
 382
 383         emit_verbosecall_enter(jd);
 384         }
 385
 386         /* end of header generation */
 387
 388         /* create replacement points */
 389
 390         REPLACEMENT_POINTS_INIT(cd, jd);
 391
 392         /* walk through all basic blocks */
 393
 394         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 395
 396                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 397
 398                 if (bptr->flags >= BBREACHED) {
 399                 /* branch resolving */
 400
 401                 codegen_resolve_branchrefs(cd, bptr);
 402
 403                 /* handle replacement points */
 404
 405                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 406
 407 #if defined(ENABLE_PROFILING)
 408                 /* generate basicblock profiling code */
 409
 410                 if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 411                         /* count frequency */
 412
 413                         disp = dseg_add_address(cd, code->bbfrequency);
 414                         M_ALD(REG_ITMP2, REG_PV, disp);
 415                         M_ALD(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 416                         M_IADD_IMM(REG_ITMP3, 1, REG_ITMP3);
 417                         M_AST(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 418
 419                         /* if this is an exception handler, start profiling again */
 420
 421 /*                      if (bptr->type == BBTYPE_EXH) */
 422 /*                              PROFILE_CYCLE_START; */
 423                 }
 424 #endif
 425
 426                 /* copy interface registers to their destination */
 427
 428                 len = bptr->indepth;
 429                 MCODECHECK(64+len);
 430
 431 #if defined(ENABLE_LSRA)
 432                 if (opt_lsra) {
 433                         while (src != NULL) {
 434                                 len--;
 435                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 436                                         /* d = reg_of_var(m, src, REG_ITMP1); */
 437                                         if (!IS_INMEMORY(src->flags))
 438                                                 d = src->vv.regoff;
 439                                         else
 440                                                 d = REG_ITMP1;
 441                                         M_INTMOVE(REG_ITMP1, d);
 442                                         emit_store(jd, NULL, src, d);
 443                                 }
 444                                 src = src->prev;
 445                         }
 446                 } else {
 447 #endif
 448                 while (len > 0) {
 449                         len--;
 450                         var = VAR(bptr->invars[len]);
 451                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 452                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 453                                 M_INTMOVE(REG_ITMP1, d);
 454                                 emit_store(jd, NULL, var, d);
 455                         }
 456                         else {
 457                                 assert((var->flags & INOUT));
 458                         }
 459                 }
 460
 461 #if defined(ENABLE_LSRA)
 462                 }
 463 #endif
 464                 /* walk through all instructions */
 465
 466                 len = bptr->icount;
 467                 currentline = 0;
 468
 469                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 470                         if (iptr->line != currentline) {
 471                                 dseg_addlinenumber(cd, iptr->line);
 472                                 currentline = iptr->line;
 473                         }
 474
 475                         MCODECHECK(64);   /* an instruction usually needs < 64 words      */
 476
 477                 switch (iptr->opc) {
 478                 case ICMD_NOP:        /* ...  ==> ...                                 */
 479                 case ICMD_POP:        /* ..., value  ==> ...                          */
 480                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 481                         break;
 482
 483                 case ICMD_INLINE_START:
 484
 485                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 486                         break;
 487
 488                 case ICMD_INLINE_BODY:
 489
 490                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 491                         dseg_addlinenumber_inline_start(cd, iptr);
 492                         dseg_addlinenumber(cd, iptr->line);
 493                         break;
 494
 495                 case ICMD_INLINE_END:
 496
 497                         dseg_addlinenumber_inline_end(cd, iptr);
 498                         dseg_addlinenumber(cd, iptr->line);
 499                         break;
 500
 501                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 502
 503                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 504                         emit_nullpointer_check(cd, iptr, s1);
 505                         break;
 506
 507                 /* constant operations ************************************************/
 508
 509                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 510
 511                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 512                         ICONST(d, iptr->sx.val.i);
 513                         emit_store_dst(jd, iptr, d);
 514                         break;
 515
 516                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 517
 518                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 519                         LCONST(d, iptr->sx.val.l);
 520                         emit_store_dst(jd, iptr, d);
 521                         break;
 522
 523                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 524
 525                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 526                         a = dseg_add_float(cd, iptr->sx.val.f);
 527                         M_FLD(d, REG_PV, a);
 528                         emit_store_dst(jd, iptr, d);
 529                         break;
 530
 531                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 532
 533                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 534                         a = dseg_add_double(cd, iptr->sx.val.d);
 535                         M_DLD(d, REG_PV, a);
 536                         emit_store_dst(jd, iptr, d);
 537                         break;
 538
 539                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 540
 541                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 542
 543                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 544                                 constant_classref *cr = iptr->sx.val.c.ref;;
 545
 546                                 disp = dseg_add_unique_address(cd, cr);
 547
 548                                 codegen_addpatchref(cd, PATCHER_resolve_classref_to_classinfo,
 549                                                                         cr, disp);
 550                         }
 551                         else
 552                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 553
 554                         M_ALD(d, REG_PV, disp);
 555                         emit_store_dst(jd, iptr, d);
 556                         break;
 557
 558
 559                 /* load/store/copy/move operations ************************************/
 560
 561                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 562                 case ICMD_ALOAD:      /* s1 = local variable                          */
 563                 case ICMD_LLOAD:
 564                 case ICMD_FLOAD:
 565                 case ICMD_DLOAD:
 566                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 567                 case ICMD_LSTORE:
 568                 case ICMD_FSTORE:
 569                 case ICMD_DSTORE:
 570                 case ICMD_COPY:
 571                 case ICMD_MOVE:
 572
 573                         emit_copy(jd, iptr);
 574                         break;
 575
 576                 case ICMD_ASTORE:
 577
 578                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 579                                 emit_copy(jd, iptr);
 580                         break;
 581
 582
 583                 /* integer operations *************************************************/
 584
 585                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 586
 587                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 588                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 589                         M_NEG(s1, d);
 590                         emit_store_dst(jd, iptr, d);
 591                         break;
 592
 593                 case ICMD_LNEG:       /* ..., value  ==> ..., - value                 */
 594
 595                         s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
 596                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 597                         M_SUBFIC(GET_LOW_REG(s1), 0, GET_LOW_REG(d));
 598                         M_SUBFZE(GET_HIGH_REG(s1), GET_HIGH_REG(d));
 599                         emit_store_dst(jd, iptr, d);
 600                         break;
 601
 602                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 603
 604                         s1 = emit_load_s1(jd, iptr, REG_ITMP2);
 605                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 606                         M_INTMOVE(s1, GET_LOW_REG(d));
 607                         M_SRA_IMM(GET_LOW_REG(d), 31, GET_HIGH_REG(d));
 608                         emit_store_dst(jd, iptr, d);
 609                         break;
 610
 611                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 612
 613                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP2);
 614                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 615                         M_INTMOVE(s1, d);
 616                         emit_store_dst(jd, iptr, d);
 617                         break;
 618
 619                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 620
 621                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 622                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 623                         M_BSEXT(s1, d);
 624                         emit_store_dst(jd, iptr, d);
 625                         break;
 626
 627                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 628
 629                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 630                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 631                         M_CZEXT(s1, d);
 632                         emit_store_dst(jd, iptr, d);
 633                         break;
 634
 635                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 636
 637                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 638                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 639                         M_SSEXT(s1, d);
 640                         emit_store_dst(jd, iptr, d);
 641                         break;
 642
 643
 644                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 645
 646                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 647                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 648                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 649                         M_IADD(s1, s2, d);
 650                         emit_store_dst(jd, iptr, d);
 651                         break;
 652
 653                                       /* s1.localindex = variable, sx.val.i = constant*/
 654
 655                 case ICMD_IINC:
 656                 case ICMD_IADDCONST:
 657
 658                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 659                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 660                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 661                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 662                         } else {
 663                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 664                                 M_IADD(s1, REG_ITMP2, d);
 665                         }
 666                         /* XXX the old code for ICMD_IINC was as follows:
 667                         {
 668                                 u4 m = iptr->sx.val.i;
 669                                 if (m & 0x8000)
 670                                         m += 65536;
 671                                 if (m & 0xffff0000)
 672                                         M_ADDIS(s1, m >> 16, d);
 673                                 if (m & 0xffff)
 674                                         M_IADD_IMM(s1, m & 0xffff, d);
 675                         }
 676                         */
 677                         emit_store_dst(jd, iptr, d);
 678                         break;
 679
 680                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 681
 682                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 683                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 684                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 685                         M_ADDC(s1, s2, GET_LOW_REG(d));
 686                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 687                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 688                         M_ADDE(s1, s2, GET_HIGH_REG(d));
 689                         emit_store_dst(jd, iptr, d);
 690                         break;
 691
 692                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 693                                       /* sx.val.l = constant                          */
 694
 695                         s3 = iptr->sx.val.l & 0xffffffff;
 696                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 697                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 698                         if ((s3 >= -32768) && (s3 <= 32767))
 699                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 700                         else {
 701                                 ICONST(REG_ITMP2, s3);
 702                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 703                         }
 704                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 705                         s3 = iptr->sx.val.l >> 32;
 706                         if (s3 == -1)
 707                                 M_ADDME(s1, GET_HIGH_REG(d));
 708                         else if (s3 == 0)
 709                                 M_ADDZE(s1, GET_HIGH_REG(d));
 710                         else {
 711                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 712                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 713                         }
 714                         emit_store_dst(jd, iptr, d);
 715                         break;
 716
 717                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 718
 719                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 720                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 721                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 722                         M_ISUB(s1, s2, d);
 723                         emit_store_dst(jd, iptr, d);
 724                         break;
 725
 726                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 727                                       /* sx.val.i = constant                          */
 728
 729                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 730                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 731                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768))
 732                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 733                         else {
 734                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 735                                 M_ISUB(s1, REG_ITMP2, d);
 736                         }
 737                         emit_store_dst(jd, iptr, d);
 738                         break;
 739
 740                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 741
 742                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 743                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 744                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 745                         M_SUBC(s1, s2, GET_LOW_REG(d));
 746                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 747                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 748                         M_SUBE(s1, s2, GET_HIGH_REG(d));
 749                         emit_store_dst(jd, iptr, d);
 750                         break;
 751
 752                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 753                                       /* sx.val.l = constant                          */
 754
 755                         s3 = (-iptr->sx.val.l) & 0xffffffff;
 756                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 757                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 758                         if ((s3 >= -32768) && (s3 <= 32767)) {
 759                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 760                         } else {
 761                                 ICONST(REG_ITMP2, s3);
 762                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 763                         }
 764                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 765                         s3 = (-iptr->sx.val.l) >> 32;
 766                         if (s3 == -1)
 767                                 M_ADDME(s1, GET_HIGH_REG(d));
 768                         else if (s3 == 0)
 769                                 M_ADDZE(s1, GET_HIGH_REG(d));
 770                         else {
 771                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 772                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 773                         }
 774                         emit_store_dst(jd, iptr, d);
 775                         break;
 776
 777                 case ICMD_IDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 778
 779                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 780                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 781                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 782                         emit_arithmetic_check(cd, iptr, s2);
 783                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 784                         M_CMP(REG_ITMP3, s1);
 785                         M_BNE(3 + (s1 != d));
 786                         M_CMPI(s2, -1);
 787                         M_BNE(1 + (s1 != d));
 788                         M_INTMOVE(s1, d);
 789                         M_BR(1);
 790                         M_IDIV(s1, s2, d);
 791                         emit_store_dst(jd, iptr, d);
 792                         break;
 793
 794                 case ICMD_IREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 795
 796                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 797                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 798                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 799                         emit_arithmetic_check(cd, iptr, s2);
 800                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 801                         M_CMP(REG_ITMP3, s1);
 802                         M_BNE(4);
 803                         M_CMPI(s2, -1);
 804                         M_BNE(2);
 805                         M_CLR(d);
 806                         M_BR(3);
 807                         M_IDIV(s1, s2, REG_ITMP3);
 808                         M_IMUL(REG_ITMP3, s2, REG_ITMP3);
 809                         M_ISUB(s1, REG_ITMP3, d);
 810                         emit_store_dst(jd, iptr, d);
 811                         break;
 812
 813                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 814                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 815
 816                         s1 = emit_load_s1(jd, iptr, REG_A0_A1_PACKED);
 817                         s2 = emit_load_s2(jd, iptr, REG_A2_A3_PACKED);
 818
 819                         /* XXX TODO: only do this if arithmetic check is really done! */
 820                         M_OR_TST(GET_HIGH_REG(s2), GET_LOW_REG(s2), REG_ITMP3);
 821                         /* XXX could be optimized */
 822                         emit_arithmetic_check(cd, iptr, REG_ITMP3);
 823
 824                         bte = iptr->sx.s23.s3.bte;
 825                         disp = dseg_add_functionptr(cd, bte->fp);
 826                         M_ALD(REG_ITMP3, REG_PV, disp);
 827                         M_MTCTR(REG_ITMP3);
 828
 829                         M_LNGMOVE(s1, REG_A0_A1_PACKED);
 830                         M_LNGMOVE(s2, REG_A2_A3_PACKED);
 831
 832                         M_JSR;
 833
 834                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
 835                         M_LNGMOVE(REG_RESULT_PACKED, d);
 836                         emit_store_dst(jd, iptr, d);
 837                         break;
 838
 839                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 840
 841                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 842                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 843                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 844                         M_IMUL(s1, s2, d);
 845                         emit_store_dst(jd, iptr, d);
 846                         break;
 847
 848                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 849                                       /* sx.val.i = constant                          */
 850
 851                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 852                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 853                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 854                                 M_IMUL_IMM(s1, iptr->sx.val.i, d);
 855                         else {
 856                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 857                                 M_IMUL(s1, REG_ITMP3, d);
 858                         }
 859                         emit_store_dst(jd, iptr, d);
 860                         break;
 861
 862                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 863
 864                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 865                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 866                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 867                         M_ADDZE(d, d);
 868                         emit_store_dst(jd, iptr, d);
 869                         break;
 870
 871                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 872
 873                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 874                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 875                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 876                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 877                         M_SLL(s1, REG_ITMP3, d);
 878                         emit_store_dst(jd, iptr, d);
 879                         break;
 880
 881                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 882                                       /* sx.val.i = constant                          */
 883
 884                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 885                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 886                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 887                         emit_store_dst(jd, iptr, d);
 888                         break;
 889
 890                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 891
 892                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 893                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 894                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 895                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 896                         M_SRA(s1, REG_ITMP3, d);
 897                         emit_store_dst(jd, iptr, d);
 898                         break;
 899
 900                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 901                                       /* sx.val.i = constant                          */
 902
 903                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 904                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 905                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 906                         emit_store_dst(jd, iptr, d);
 907                         break;
 908
 909                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 910
 911                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 912                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 913                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 914                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 915                         M_SRL(s1, REG_ITMP2, d);
 916                         emit_store_dst(jd, iptr, d);
 917                         break;
 918
 919                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 920                                       /* sx.val.i = constant                          */
 921
 922                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 923                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 924                         if (iptr->sx.val.i & 0x1f)
 925                                 M_SRL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 926                         else {
 927                                 M_INTMOVE(s1, d);
 928                         }
 929                         emit_store_dst(jd, iptr, d);
 930                         break;
 931
 932                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 933
 934                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 935                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 936                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 937                         M_AND(s1, s2, d);
 938                         emit_store_dst(jd, iptr, d);
 939                         break;
 940
 941                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 942                                       /* sx.val.i = constant                          */
 943
 944                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 945                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 946                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 947                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 948                         /*
 949                         else if (iptr->sx.val.i == 0xffffff) {
 950                                 M_RLWINM(s1, 0, 8, 31, d);
 951                                 }
 952                         */
 953                         else {
 954                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 955                                 M_AND(s1, REG_ITMP3, d);
 956                         }
 957                         emit_store_dst(jd, iptr, d);
 958                         break;
 959
 960                 case ICMD_LAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 961
 962                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 963                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 964                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 965                         M_AND(s1, s2, GET_LOW_REG(d));
 966                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 967                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 968                         M_AND(s1, s2, GET_HIGH_REG(d));
 969                         emit_store_dst(jd, iptr, d);
 970                         break;
 971
 972                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 973                                       /* sx.val.l = constant                          */
 974
 975                         s3 = iptr->sx.val.l & 0xffffffff;
 976                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 977                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 978                         if ((s3 >= 0) && (s3 <= 65535))
 979                                 M_AND_IMM(s1, s3, GET_LOW_REG(d));
 980                         else {
 981                                 ICONST(REG_ITMP3, s3);
 982                                 M_AND(s1, REG_ITMP3, GET_LOW_REG(d));
 983                         }
 984                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 985                         s3 = iptr->sx.val.l >> 32;
 986                         if ((s3 >= 0) && (s3 <= 65535))
 987                                 M_AND_IMM(s1, s3, GET_HIGH_REG(d));
 988                         else {
 989                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 990                                 M_AND(s1, REG_ITMP3, GET_HIGH_REG(d));
 991                         }
 992                         emit_store_dst(jd, iptr, d);
 993                         break;
 994
 995                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 996                                       /* sx.val.i = constant                          */
 997
 998                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 999                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1000                         M_MOV(s1, REG_ITMP2);
1001                         M_CMPI(s1, 0);
1002                         M_BGE(1 + 2*(iptr->sx.val.i >= 32768));
1003                         if (iptr->sx.val.i >= 32768) {
1004                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
1005                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
1006                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
1007                         }
1008                         else {
1009                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
1010                         }
1011                         {
1012                                 int b=0, m = iptr->sx.val.i;
1013                                 while (m >>= 1)
1014                                         ++b;
1015                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
1016                         }
1017                         M_ISUB(s1, REG_ITMP2, d);
1018                         emit_store_dst(jd, iptr, d);
1019                         break;
1020
1021                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
1022
1023                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1024                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1025                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1026                         M_OR(s1, s2, d);
1027                         emit_store_dst(jd, iptr, d);
1028                         break;
1029
1030                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
1031                                       /* sx.val.i = constant                          */
1032
1033                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1034                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1035                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1036                                 M_OR_IMM(s1, iptr->sx.val.i, d);
1037                         else {
1038                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1039                                 M_OR(s1, REG_ITMP3, d);
1040                         }
1041                         emit_store_dst(jd, iptr, d);
1042                         break;
1043
1044                 case ICMD_LOR:       /* ..., val1, val2  ==> ..., val1 | val2        */
1045
1046                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1047                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1048                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1049                         M_OR(s1, s2, GET_LOW_REG(d));
1050                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1051                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1052                         M_OR(s1, s2, GET_HIGH_REG(d));
1053                         emit_store_dst(jd, iptr, d);
1054                         break;
1055
1056                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
1057                                       /* sx.val.l = constant                          */
1058
1059                         s3 = iptr->sx.val.l & 0xffffffff;
1060                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1061                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1062                         if ((s3 >= 0) && (s3 <= 65535))
1063                                 M_OR_IMM(s1, s3, GET_LOW_REG(d));
1064                         else {
1065                                 ICONST(REG_ITMP3, s3);
1066                                 M_OR(s1, REG_ITMP3, GET_LOW_REG(d));
1067                         }
1068                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1069                         s3 = iptr->sx.val.l >> 32;
1070                         if ((s3 >= 0) && (s3 <= 65535))
1071                                 M_OR_IMM(s1, s3, GET_HIGH_REG(d));
1072                         else {
1073                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1074                                 M_OR(s1, REG_ITMP3, GET_HIGH_REG(d));
1075                         }
1076                         emit_store_dst(jd, iptr, d);
1077                         break;
1078
1079                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1080
1081                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1082                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1083                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1084                         M_XOR(s1, s2, d);
1085                         emit_store_dst(jd, iptr, d);
1086                         break;
1087
1088                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1089                                       /* sx.val.i = constant                          */
1090
1091                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1092                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1093                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1094                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1095                         else {
1096                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1097                                 M_XOR(s1, REG_ITMP3, d);
1098                         }
1099                         emit_store_dst(jd, iptr, d);
1100                         break;
1101
1102                 case ICMD_LXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1103
1104                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1105                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1106                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1107                         M_XOR(s1, s2, GET_LOW_REG(d));
1108                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1109                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1110                         M_XOR(s1, s2, GET_HIGH_REG(d));
1111                         emit_store_dst(jd, iptr, d);
1112                         break;
1113
1114                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1115                                       /* sx.val.l = constant                          */
1116
1117                         s3 = iptr->sx.val.l & 0xffffffff;
1118                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1119                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1120                         if ((s3 >= 0) && (s3 <= 65535))
1121                                 M_XOR_IMM(s1, s3, GET_LOW_REG(d));
1122                         else {
1123                                 ICONST(REG_ITMP3, s3);
1124                                 M_XOR(s1, REG_ITMP3, GET_LOW_REG(d));
1125                         }
1126                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1127                         s3 = iptr->sx.val.l >> 32;
1128                         if ((s3 >= 0) && (s3 <= 65535))
1129                                 M_XOR_IMM(s1, s3, GET_HIGH_REG(d));
1130                         else {
1131                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1132                                 M_XOR(s1, REG_ITMP3, GET_HIGH_REG(d));
1133                         }
1134                         emit_store_dst(jd, iptr, d);
1135                         break;
1136
1137                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1138
1139                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
1140                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1141                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1142                         vm_abort("codegen: implement ICMD_LCMP!");
1143                         emit_store_dst(jd, iptr, d);
1144                         break;
1145
1146
1147                 /* floating operations ************************************************/
1148
1149                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1150
1151                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1152                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1153                         M_FMOVN(s1, d);
1154                         emit_store_dst(jd, iptr, d);
1155                         break;
1156
1157                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1158
1159                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1160                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1161                         M_FMOVN(s1, d);
1162                         emit_store_dst(jd, iptr, d);
1163                         break;
1164
1165                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1166
1167                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1168                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1169                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1170                         M_FADD(s1, s2, d);
1171                         emit_store_dst(jd, iptr, d);
1172                         break;
1173
1174                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1175
1176                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1177                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1178                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1179                         M_DADD(s1, s2, d);
1180                         emit_store_dst(jd, iptr, d);
1181                         break;
1182
1183                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1184
1185                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1186                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1187                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1188                         M_FSUB(s1, s2, d);
1189                         emit_store_dst(jd, iptr, d);
1190                         break;
1191
1192                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1193
1194                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1195                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1196                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1197                         M_DSUB(s1, s2, d);
1198                         emit_store_dst(jd, iptr, d);
1199                         break;
1200
1201                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1202
1203                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1204                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1205                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1206                         M_FMUL(s1, s2, d);
1207                         emit_store_dst(jd, iptr, d);
1208                         break;
1209
1210                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1211
1212                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1213                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1214                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1215                         M_DMUL(s1, s2, d);
1216                         emit_store_dst(jd, iptr, d);
1217                         break;
1218
1219                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1220
1221                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1222                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1223                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1224                         M_FDIV(s1, s2, d);
1225                         emit_store_dst(jd, iptr, d);
1226                         break;
1227
1228                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1229
1230                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1231                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1232                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1233                         M_DDIV(s1, s2, d);
1234                         emit_store_dst(jd, iptr, d);
1235                         break;
1236
1237                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1238                 case ICMD_D2I:
1239
1240                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1241                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1242                         M_CLR(d);
1243                         disp = dseg_add_float(cd, 0.0);
1244                         M_FLD(REG_FTMP2, REG_PV, disp);
1245                         M_FCMPU(s1, REG_FTMP2);
1246                         M_BNAN(4);
1247                         disp = dseg_add_unique_s4(cd, 0);
1248                         M_CVTDL_C(s1, REG_FTMP1);
1249                         M_LDA(REG_ITMP1, REG_PV, disp);
1250                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1251                         M_ILD(d, REG_PV, disp);
1252                         emit_store_dst(jd, iptr, d);
1253                         break;
1254
1255                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1256
1257                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1258                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1259                         M_FLTMOVE(s1, d);
1260                         emit_store_dst(jd, iptr, d);
1261                         break;
1262
1263                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1264
1265                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1266                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1267                         M_CVTDF(s1, d);
1268                         emit_store_dst(jd, iptr, d);
1269                         break;
1270
1271                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1272                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1273
1274
1275                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1276                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1277                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1278                         M_FCMPU(s2, s1);
1279                         M_IADD_IMM(REG_ZERO, -1, d);
1280                         M_BNAN(4);
1281                         M_BGT(3);
1282                         M_IADD_IMM(REG_ZERO, 0, d);
1283                         M_BGE(1);
1284                         M_IADD_IMM(REG_ZERO, 1, d);
1285                         emit_store_dst(jd, iptr, d);
1286                         break;
1287
1288                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1289                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1290
1291                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1292                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1293                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1294                         M_FCMPU(s1, s2);
1295                         M_IADD_IMM(REG_ZERO, 1, d);
1296                         M_BNAN(4);
1297                         M_BGT(3);
1298                         M_IADD_IMM(REG_ZERO, 0, d);
1299                         M_BGE(1);
1300                         M_IADD_IMM(REG_ZERO, -1, d);
1301                         emit_store_dst(jd, iptr, d);
1302                         break;
1303
1304                 case ICMD_IF_FCMPEQ:    /* ..., value, value ==> ...                  */
1305                 case ICMD_IF_DCMPEQ:
1306
1307                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1308                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1309                         M_FCMPU(s1, s2);
1310                         M_BNAN(1);
1311                         emit_beq(cd, iptr->dst.block);
1312                         break;
1313
1314                 case ICMD_IF_FCMPNE:    /* ..., value, value ==> ...                  */
1315                 case ICMD_IF_DCMPNE:
1316
1317                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1318                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1319                         M_FCMPU(s1, s2);
1320                         emit_bnan(cd, iptr->dst.block);
1321                         emit_bne(cd, iptr->dst.block);
1322                         break;
1323
1324
1325                 case ICMD_IF_FCMPL_LT:  /* ..., value, value ==> ...                  */
1326                 case ICMD_IF_DCMPL_LT:
1327
1328                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1329                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1330                         M_FCMPU(s1, s2);
1331                         emit_bnan(cd, iptr->dst.block);
1332                         emit_blt(cd, iptr->dst.block);
1333                         break;
1334
1335                 case ICMD_IF_FCMPL_GT:  /* ..., value, value ==> ...                  */
1336                 case ICMD_IF_DCMPL_GT:
1337
1338                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1339                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1340                         M_FCMPU(s1, s2);
1341                         M_BNAN(1);
1342                         emit_bgt(cd, iptr->dst.block);
1343                         break;
1344
1345                 case ICMD_IF_FCMPL_LE:  /* ..., value, value ==> ...                  */
1346                 case ICMD_IF_DCMPL_LE:
1347
1348                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1349                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1350                         M_FCMPU(s1, s2);
1351                         emit_bnan(cd, iptr->dst.block);
1352                         emit_ble(cd, iptr->dst.block);
1353                         break;
1354
1355                 case ICMD_IF_FCMPL_GE:  /* ..., value, value ==> ...                  */
1356                 case ICMD_IF_DCMPL_GE:
1357
1358                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1359                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1360                         M_FCMPU(s1, s2);
1361                         M_BNAN(1);
1362                         emit_bge(cd, iptr->dst.block);
1363                         break;
1364
1365                 case ICMD_IF_FCMPG_LT:  /* ..., value, value ==> ...                  */
1366                 case ICMD_IF_DCMPG_LT:
1367
1368                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1369                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1370                         M_FCMPU(s1, s2);
1371                         M_BNAN(1);
1372                         emit_blt(cd, iptr->dst.block);
1373                         break;
1374
1375                 case ICMD_IF_FCMPG_GT:  /* ..., value, value ==> ...                  */
1376                 case ICMD_IF_DCMPG_GT:
1377
1378                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1379                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1380                         M_FCMPU(s1, s2);
1381                         emit_bnan(cd, iptr->dst.block);
1382                         emit_bgt(cd, iptr->dst.block);
1383                         break;
1384
1385                 case ICMD_IF_FCMPG_LE:  /* ..., value, value ==> ...                  */
1386                 case ICMD_IF_DCMPG_LE:
1387
1388                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1389                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1390                         M_FCMPU(s1, s2);
1391                         M_BNAN(1);
1392                         emit_ble(cd, iptr->dst.block);
1393                         break;
1394
1395                 case ICMD_IF_FCMPG_GE:  /* ..., value, value ==> ...                  */
1396                 case ICMD_IF_DCMPG_GE:
1397
1398                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1399                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1400                         M_FCMPU(s1, s2);
1401                         emit_bnan(cd, iptr->dst.block);
1402                         emit_bge(cd, iptr->dst.block);
1403                         break;
1404
1405
1406                 /* memory operations **************************************************/
1407
1408                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1409
1410                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1411                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1412                         /* implicit null-pointer check */
1413                         M_ILD(d, s1, OFFSET(java_arrayheader, size));
1414                         emit_store_dst(jd, iptr, d);
1415                         break;
1416
1417                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1418
1419                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1420                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1421                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1422                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1423                         M_IADD_IMM(s2, OFFSET(java_bytearray, data[0]), REG_ITMP2);
1424                         /* implicit null-pointer check */
1425                         M_LBZX(d, s1, REG_ITMP2);
1426                         M_BSEXT(d, d);
1427                         emit_store_dst(jd, iptr, d);
1428                         break;
1429
1430                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1431
1432                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1433                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1434                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1435                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1436                         M_SLL_IMM(s2, 1, REG_ITMP2);
1437                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray, data[0]), REG_ITMP2);
1438                         /* implicit null-pointer check */
1439                         M_LHZX(d, s1, REG_ITMP2);
1440                         emit_store_dst(jd, iptr, d);
1441                         break;
1442
1443                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1444
1445                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1446                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1447                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1448                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1449                         M_SLL_IMM(s2, 1, REG_ITMP2);
1450                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray, data[0]), REG_ITMP2);
1451                         /* implicit null-pointer check */
1452                         M_LHAX(d, s1, REG_ITMP2);
1453                         emit_store_dst(jd, iptr, d);
1454                         break;
1455
1456                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1457
1458                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1459                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1460                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1461                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1462                         M_SLL_IMM(s2, 2, REG_ITMP2);
1463                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray, data[0]), REG_ITMP2);
1464                         /* implicit null-pointer check */
1465                         M_LWZX(d, s1, REG_ITMP2);
1466                         emit_store_dst(jd, iptr, d);
1467                         break;
1468
1469                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1470
1471                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1472                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1473                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1474                         /* implicit null-pointer check */
1475                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1476                         M_SLL_IMM(s2, 3, REG_ITMP2);
1477                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1478                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray, data[0]));
1479                         emit_store_dst(jd, iptr, d);
1480                         break;
1481
1482                 case ICMD_FALOAD:     /* ..., arrayref, index  ==> ..., value         */
1483
1484                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1485                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1486                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1487                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1488                         M_SLL_IMM(s2, 2, REG_ITMP2);
1489                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray, data[0]), REG_ITMP2);
1490                         /* implicit null-pointer check */
1491                         M_LFSX(d, s1, REG_ITMP2);
1492                         emit_store_dst(jd, iptr, d);
1493                         break;
1494
1495                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1496
1497                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1498                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1499                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1500                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1501                         M_SLL_IMM(s2, 3, REG_ITMP2);
1502                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray, data[0]), REG_ITMP2);
1503                         /* implicit null-pointer check */
1504                         M_LFDX(d, s1, REG_ITMP2);
1505                         emit_store_dst(jd, iptr, d);
1506                         break;
1507
1508                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1509
1510                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1511                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1512                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1513                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1514                         M_SLL_IMM(s2, 2, REG_ITMP2);
1515                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray, data[0]), REG_ITMP2);
1516                         /* implicit null-pointer check */
1517                         M_LWZX(d, s1, REG_ITMP2);
1518                         emit_store_dst(jd, iptr, d);
1519                         break;
1520
1521
1522                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1523
1524                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1525                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1526                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1527                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1528                         M_IADD_IMM(s2, OFFSET(java_bytearray, data[0]), REG_ITMP2);
1529                         /* implicit null-pointer check */
1530                         M_STBX(s3, s1, REG_ITMP2);
1531                         break;
1532
1533                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1534
1535                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1536                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1537                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1538                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1539                         M_SLL_IMM(s2, 1, REG_ITMP2);
1540                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray, data[0]), REG_ITMP2);
1541                         /* implicit null-pointer check */
1542                         M_STHX(s3, s1, REG_ITMP2);
1543                         break;
1544
1545                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1546
1547                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1548                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1549                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1550                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1551                         M_SLL_IMM(s2, 1, REG_ITMP2);
1552                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray, data[0]), REG_ITMP2);
1553                         /* implicit null-pointer check */
1554                         M_STHX(s3, s1, REG_ITMP2);
1555                         break;
1556
1557                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1558
1559                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1560                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1561                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1562                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1563                         M_SLL_IMM(s2, 2, REG_ITMP2);
1564                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray, data[0]), REG_ITMP2);
1565                         /* implicit null-pointer check */
1566                         M_STWX(s3, s1, REG_ITMP2);
1567                         break;
1568
1569                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1570
1571                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1572                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1573                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1574                         s3 = emit_load_s3_high(jd, iptr, REG_ITMP3);
1575                         M_SLL_IMM(s2, 3, REG_ITMP2);
1576                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray, data[0]), REG_ITMP2);
1577                         /* implicit null-pointer check */
1578                         M_STWX(s3, s1, REG_ITMP2);
1579                         M_IADD_IMM(REG_ITMP2, 4, REG_ITMP2);
1580                         s3 = emit_load_s3_low(jd, iptr, REG_ITMP3);
1581                         M_STWX(s3, s1, REG_ITMP2);
1582                         break;
1583
1584                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1585
1586                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1587                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1588                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1589                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1590                         M_SLL_IMM(s2, 2, REG_ITMP2);
1591                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray, data[0]), REG_ITMP2);
1592                         /* implicit null-pointer check */
1593                         M_STFSX(s3, s1, REG_ITMP2);
1594                         break;
1595
1596                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1597
1598                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1599                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1600                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1601                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1602                         M_SLL_IMM(s2, 3, REG_ITMP2);
1603                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray, data[0]), REG_ITMP2);
1604                         /* implicit null-pointer check */
1605                         M_STFDX(s3, s1, REG_ITMP2);
1606                         break;
1607
1608                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1609
1610                         s1 = emit_load_s1(jd, iptr, REG_A0);
1611                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1612                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1613                         s3 = emit_load_s3(jd, iptr, REG_A1);
1614
1615                         /* XXX what if array is NULL */
1616                         disp = dseg_add_functionptr(cd, BUILTIN_canstore);
1617                         M_ALD(REG_ITMP3, REG_PV, disp);
1618                         M_MTCTR(REG_ITMP3);
1619
1620                         M_INTMOVE(s1, REG_A0);
1621                         M_INTMOVE(s3, REG_A1);
1622
1623                         M_JSR;
1624                         emit_exception_check(cd, iptr);
1625
1626                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1627                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1628                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1629                         M_SLL_IMM(s2, 2, REG_ITMP2);
1630                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray, data[0]), REG_ITMP2);
1631                         /* implicit null-pointer check */
1632                         M_STWX(s3, s1, REG_ITMP2);
1633                         break;
1634
1635
1636                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1637
1638                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1639                                 uf        = iptr->sx.s23.s3.uf;
1640                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1641                                 disp      = dseg_add_unique_address(cd, uf);
1642
1643                                 codegen_addpatchref(cd, PATCHER_get_putstatic, uf, disp);
1644                         }
1645                         else {
1646                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1647                                 fieldtype = fi->type;
1648                                 disp      = dseg_add_address(cd, &(fi->value));
1649
1650                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class))
1651                                         codegen_addpatchref(cd, PATCHER_initialize_class,
1652                                                                                 fi->class, disp);
1653                         }
1654
1655                         M_ALD(REG_ITMP1, REG_PV, disp);
1656                         switch (fieldtype) {
1657                         case TYPE_INT:
1658                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1659                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1660                                 break;
1661                         case TYPE_LNG:
1662                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1663                                 M_ILD_INTERN(GET_LOW_REG(d), REG_ITMP1, 4);/* keep this order */
1664                                 M_ILD_INTERN(GET_HIGH_REG(d), REG_ITMP1, 0);/*keep this order */
1665                                 break;
1666                         case TYPE_ADR:
1667                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1668                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1669                                 break;
1670                         case TYPE_FLT:
1671                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1672                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1673                                 break;
1674                         case TYPE_DBL:
1675                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1676                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1677                                 break;
1678                         }
1679                         emit_store_dst(jd, iptr, d);
1680                         break;
1681
1682                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1683
1684                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1685                                 uf        = iptr->sx.s23.s3.uf;
1686                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1687                                 disp      = dseg_add_unique_address(cd, uf);
1688
1689                                 codegen_addpatchref(cd, PATCHER_get_putstatic, uf, disp);
1690                         }
1691                         else {
1692                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1693                                 fieldtype = fi->type;
1694                                 disp      = dseg_add_address(cd, &(fi->value));
1695
1696                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class))
1697                                         codegen_addpatchref(cd, PATCHER_initialize_class,
1698                                                                                 fi->class, disp);
1699                         }
1700
1701                         M_ALD(REG_ITMP1, REG_PV, disp);
1702                         switch (fieldtype) {
1703                         case TYPE_INT:
1704                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1705                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1706                                 break;
1707                         case TYPE_LNG:
1708                                 s1 = emit_load_s1(jd, iptr, REG_ITMP23_PACKED);
1709                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1710                                 break;
1711                         case TYPE_ADR:
1712                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1713                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1714                                 break;
1715                         case TYPE_FLT:
1716                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1717                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1718                                 break;
1719                         case TYPE_DBL:
1720                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1721                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1722                                 break;
1723                         }
1724                         break;
1725
1726
1727                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1728
1729                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1730
1731                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1732                                 uf        = iptr->sx.s23.s3.uf;
1733                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1734                                 disp      = 0;
1735
1736                                 codegen_addpatchref(cd, PATCHER_get_putfield, uf, 0);
1737                         }
1738                         else {
1739                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1740                                 fieldtype = fi->type;
1741                                 disp      = fi->offset;
1742                         }
1743
1744                         /* implicit null-pointer check */
1745                         switch (fieldtype) {
1746                         case TYPE_INT:
1747                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1748                                 M_ILD(d, s1, disp);
1749                                 break;
1750                         case TYPE_LNG:
1751                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1752                                 if (GET_HIGH_REG(d) == s1) {
1753                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1754                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1755                                 }
1756                                 else {
1757                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1758                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1759                                 }
1760                                 break;
1761                         case TYPE_ADR:
1762                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1763                                 M_ALD(d, s1, disp);
1764                                 break;
1765                         case TYPE_FLT:
1766                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1767                                 M_FLD(d, s1, disp);
1768                                 break;
1769                         case TYPE_DBL:
1770                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1771                                 M_DLD(d, s1, disp);
1772                                 break;
1773                         }
1774                         emit_store_dst(jd, iptr, d);
1775                         break;
1776
1777                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1778
1779                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1780
1781                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1782                                 uf        = iptr->sx.s23.s3.uf;
1783                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1784                                 disp      = 0;
1785                         }
1786                         else {
1787                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1788                                 fieldtype = fi->type;
1789                                 disp      = fi->offset;
1790                         }
1791
1792                         if (IS_INT_LNG_TYPE(fieldtype)) {
1793                                 if (IS_2_WORD_TYPE(fieldtype))
1794                                         s2 = emit_load_s2(jd, iptr, REG_ITMP23_PACKED);
1795                                 else
1796                                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1797                         }
1798                         else
1799                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1800
1801                         if (INSTRUCTION_IS_UNRESOLVED(iptr))
1802                                 codegen_addpatchref(cd, PATCHER_get_putfield, uf, 0);
1803
1804                         /* implicit null-pointer check */
1805                         switch (fieldtype) {
1806                         case TYPE_INT:
1807                                 M_IST(s2, s1, disp);
1808                                 break;
1809                         case TYPE_LNG:
1810                                 M_IST(GET_LOW_REG(s2), s1, disp + 4);      /* keep this order */
1811                                 M_IST(GET_HIGH_REG(s2), s1, disp);         /* keep this order */
1812                                 break;
1813                         case TYPE_ADR:
1814                                 M_AST(s2, s1, disp);
1815                                 break;
1816                         case TYPE_FLT:
1817                                 M_FST(s2, s1, disp);
1818                                 break;
1819                         case TYPE_DBL:
1820                                 M_DST(s2, s1, disp);
1821                                 break;
1822                         }
1823                         break;
1824
1825
1826                 /* branch operations **************************************************/
1827
1828                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1829
1830                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1831                         M_INTMOVE(s1, REG_ITMP1_XPTR);
1832
1833 #ifdef ENABLE_VERIFIER
1834                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1835                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
1836
1837                                 codegen_addpatchref(cd, PATCHER_resolve_class, uc, 0);
1838                         }
1839 #endif /* ENABLE_VERIFIER */
1840
1841                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1842                         M_ALD(REG_ITMP2, REG_PV, disp);
1843                         M_MTCTR(REG_ITMP2);
1844
1845                         if (jd->isleafmethod)
1846                                 M_MFLR(REG_ITMP3);                          /* save LR        */
1847
1848                         M_BL(0);                                        /* get current PC */
1849                         M_MFLR(REG_ITMP2_XPC);
1850
1851                         if (jd->isleafmethod)
1852                                 M_MTLR(REG_ITMP3);                          /* restore LR     */
1853
1854                         M_RTS;                                          /* jump to CTR    */
1855                         ALIGNCODENOP;
1856                         break;
1857
1858                 case ICMD_GOTO:         /* ... ==> ...                                */
1859                 case ICMD_RET:          /* ... ==> ...                                */
1860
1861                         emit_br(cd, iptr->dst.block);
1862                         ALIGNCODENOP;
1863                         break;
1864
1865                 case ICMD_JSR:          /* ... ==> ...                                */
1866
1867                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1868                         ALIGNCODENOP;
1869                         break;
1870
1871                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1872                 case ICMD_IFNONNULL:
1873
1874                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1875                         M_TST(s1);
1876                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFNULL, BRANCH_OPT_NONE);
1877                         break;
1878
1879                 case ICMD_IFLT:
1880                 case ICMD_IFLE:
1881                 case ICMD_IFNE:
1882                 case ICMD_IFGT:
1883                 case ICMD_IFGE:
1884                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1885
1886                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1887                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1888                                 M_CMPI(s1, iptr->sx.val.i);
1889                         else {
1890                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1891                                 M_CMP(s1, REG_ITMP2);
1892                         }
1893                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1894                         break;
1895
1896
1897                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1898
1899                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1900                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1901                         if (iptr->sx.val.l == 0) {
1902                                 M_OR_TST(s1, s2, REG_ITMP3);
1903                         }
1904                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1905                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1906                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1907                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1908                         }
1909                         else {
1910                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1911                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1912                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1913                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1914                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1915                         }
1916                         emit_beq(cd, iptr->dst.block);
1917                         break;
1918
1919                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1920
1921                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1922                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1923                         if (iptr->sx.val.l == 0) {
1924                                 /* if high word is less than zero, the whole long is too */
1925                                 M_CMPI(s2, 0);
1926                                 emit_blt(cd, iptr->dst.block);
1927                         }
1928                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1929                                 M_CMPI(s2, 0);
1930                                 emit_blt(cd, iptr->dst.block);
1931                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1932                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1933                                 emit_blt(cd, iptr->dst.block);
1934                                 emit_label(cd, BRANCH_LABEL_1);
1935                         }
1936                         else {
1937                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1938                                 M_CMP(s2, REG_ITMP3);
1939                                 emit_blt(cd, iptr->dst.block);
1940                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1941                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1942                                 M_CMPU(s1, REG_ITMP3);
1943                                 emit_blt(cd, iptr->dst.block);
1944                                 emit_label(cd, BRANCH_LABEL_1);
1945                         }
1946                         break;
1947
1948                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1949
1950                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1951                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1952 /*                      if (iptr->sx.val.l == 0) { */
1953 /*                              M_OR(s1, s2, REG_ITMP3); */
1954 /*                              M_CMPI(REG_ITMP3, 0); */
1955
1956 /*                      } else  */
1957                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1958                                 M_CMPI(s2, 0);
1959                                 emit_blt(cd, iptr->dst.block);
1960                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1961                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1962                         }
1963                         else {
1964                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1965                                 M_CMP(s2, REG_ITMP3);
1966                                 emit_blt(cd, iptr->dst.block);
1967                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1968                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1969                                 M_CMPU(s1, REG_ITMP3);
1970                         }
1971                         emit_ble(cd, iptr->dst.block);
1972                         emit_label(cd, BRANCH_LABEL_1);
1973                         break;
1974
1975                 case ICMD_IF_LNE:       /* ..., value ==> ...                         */
1976
1977                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1978                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1979                         if (iptr->sx.val.l == 0) {
1980                                 M_OR_TST(s1, s2, REG_ITMP3);
1981                         }
1982                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1983                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1984                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1985                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1986                         }
1987                         else {
1988                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1989                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1990                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1991                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1992                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1993                         }
1994                         emit_bne(cd, iptr->dst.block);
1995                         break;
1996
1997                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1998
1999                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2000                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
2001 /*                      if (iptr->sx.val.l == 0) { */
2002 /*                              M_OR(s1, s2, REG_ITMP3); */
2003 /*                              M_CMPI(REG_ITMP3, 0); */
2004
2005 /*                      } else  */
2006                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
2007                                 M_CMPI(s2, 0);
2008                                 emit_bgt(cd, iptr->dst.block);
2009                                 emit_label_blt(cd, BRANCH_LABEL_1);
2010                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
2011                         }
2012                         else {
2013                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
2014                                 M_CMP(s2, REG_ITMP3);
2015                                 emit_bgt(cd, iptr->dst.block);
2016                                 emit_label_blt(cd, BRANCH_LABEL_1);
2017                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
2018                                 M_CMPU(s1, REG_ITMP3);
2019                         }
2020                         emit_bgt(cd, iptr->dst.block);
2021                         emit_label(cd, BRANCH_LABEL_1);
2022                         break;
2023
2024                 case ICMD_IF_LGE:       /* ..., value ==> ...                         */
2025
2026                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2027                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
2028                         if (iptr->sx.val.l == 0) {
2029                                 /* if high word is greater equal zero, the whole long is too */
2030                                 M_CMPI(s2, 0);
2031                                 emit_bge(cd, iptr->dst.block);
2032                         }
2033                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
2034                                 M_CMPI(s2, 0);
2035                                 emit_bgt(cd, iptr->dst.block);
2036                                 emit_label_blt(cd, BRANCH_LABEL_1);
2037                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
2038                                 emit_bge(cd, iptr->dst.block);
2039                                 emit_label(cd, BRANCH_LABEL_1);
2040                         }
2041                         else {
2042                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
2043                                 M_CMP(s2, REG_ITMP3);
2044                                 emit_bgt(cd, iptr->dst.block);
2045                                 emit_label_blt(cd, BRANCH_LABEL_1);
2046                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
2047                                 M_CMPU(s1, REG_ITMP3);
2048                                 emit_bge(cd, iptr->dst.block);
2049                                 emit_label(cd, BRANCH_LABEL_1);
2050                         }
2051                         break;
2052
2053                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
2054                 case ICMD_IF_ICMPNE:
2055                 case ICMD_IF_ICMPLT:
2056                 case ICMD_IF_ICMPGT:
2057                 case ICMD_IF_ICMPLE:
2058                 case ICMD_IF_ICMPGE:
2059
2060                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2061                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
2062                         M_CMP(s1, s2);
2063                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ICMPEQ, BRANCH_OPT_NONE);
2064                         break;
2065
2066                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
2067                 case ICMD_IF_ACMPNE:
2068
2069                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2070                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
2071                         M_CMP(s1, s2);
2072                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ACMPEQ, BRANCH_OPT_NONE);
2073                         break;
2074
2075                 case ICMD_IF_LCMPEQ:    /* ..., value, value ==> ...                  */
2076
2077                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2078                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2079                         M_CMP(s1, s2);
2080                         emit_label_bne(cd, BRANCH_LABEL_1);
2081                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2082                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2083                         M_CMP(s1, s2);
2084                         emit_beq(cd, iptr->dst.block);
2085                         emit_label(cd, BRANCH_LABEL_1);
2086                         break;
2087
2088                 case ICMD_IF_LCMPNE:    /* ..., value, value ==> ...                  */
2089
2090                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2091                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2092                         M_CMP(s1, s2);
2093                         emit_bne(cd, iptr->dst.block);
2094                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2095                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2096                         M_CMP(s1, s2);
2097                         emit_bne(cd, iptr->dst.block);
2098                         break;
2099
2100                 case ICMD_IF_LCMPLT:    /* ..., value, value ==> ...                  */
2101
2102                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2103                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2104                         M_CMP(s1, s2);
2105                         emit_blt(cd, iptr->dst.block);
2106                         emit_label_bgt(cd, BRANCH_LABEL_1);
2107                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2108                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2109                         M_CMPU(s1, s2);
2110                         emit_blt(cd, iptr->dst.block);
2111                         emit_label(cd, BRANCH_LABEL_1);
2112                         break;
2113
2114                 case ICMD_IF_LCMPGT:    /* ..., value, value ==> ...                  */
2115
2116                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2117                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2118                         M_CMP(s1, s2);
2119                         emit_bgt(cd, iptr->dst.block);
2120                         emit_label_blt(cd, BRANCH_LABEL_1);
2121                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2122                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2123                         M_CMPU(s1, s2);
2124                         emit_bgt(cd, iptr->dst.block);
2125                         emit_label(cd, BRANCH_LABEL_1);
2126                         break;
2127
2128                 case ICMD_IF_LCMPLE:    /* ..., value, value ==> ...                  */
2129
2130                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2131                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2132                         M_CMP(s1, s2);
2133                         emit_blt(cd, iptr->dst.block);
2134                         emit_label_bgt(cd, BRANCH_LABEL_1);
2135                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2136                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2137                         M_CMPU(s1, s2);
2138                         emit_ble(cd, iptr->dst.block);
2139                         emit_label(cd, BRANCH_LABEL_1);
2140                         break;
2141
2142                 case ICMD_IF_LCMPGE:    /* ..., value, value ==> ...                  */
2143
2144                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2145                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2146                         M_CMP(s1, s2);
2147                         emit_bgt(cd, iptr->dst.block);
2148                         emit_label_blt(cd, BRANCH_LABEL_1);
2149                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2150                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2151                         M_CMPU(s1, s2);
2152                         emit_bge(cd, iptr->dst.block);
2153                         emit_label(cd, BRANCH_LABEL_1);
2154                         break;
2155
2156                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
2157
2158                         REPLACEMENT_POINT_RETURN(cd, iptr);
2159                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2160                         M_INTMOVE(s1, REG_RESULT);
2161                         goto nowperformreturn;
2162
2163                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
2164
2165                         REPLACEMENT_POINT_RETURN(cd, iptr);
2166                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2167                         M_INTMOVE(s1, REG_RESULT);
2168
2169 #ifdef ENABLE_VERIFIER
2170                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2171                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
2172
2173                                 codegen_addpatchref(cd, PATCHER_resolve_class, uc, 0);
2174                         }
2175 #endif /* ENABLE_VERIFIER */
2176                         goto nowperformreturn;
2177
2178                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
2179
2180                         REPLACEMENT_POINT_RETURN(cd, iptr);
2181                         s1 = emit_load_s1(jd, iptr, REG_RESULT_PACKED);
2182                         M_LNGMOVE(s1, REG_RESULT_PACKED);
2183                         goto nowperformreturn;
2184
2185                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
2186                 case ICMD_DRETURN:
2187
2188                         REPLACEMENT_POINT_RETURN(cd, iptr);
2189                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
2190                         M_FLTMOVE(s1, REG_FRESULT);
2191                         goto nowperformreturn;
2192
2193                 case ICMD_RETURN:      /* ...  ==> ...                                */
2194
2195                         REPLACEMENT_POINT_RETURN(cd, iptr);
2196
2197 nowperformreturn:
2198                         {
2199                         s4 i, p;
2200
2201                         p = cd->stackframesize;
2202
2203                         /* call trace function */
2204
2205                         emit_verbosecall_exit(jd);
2206
2207 #if defined(ENABLE_THREADS)
2208                         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
2209                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
2210                                 M_ALD(REG_ITMP3, REG_PV, disp);
2211                                 M_MTCTR(REG_ITMP3);
2212
2213                                 /* we need to save the proper return value */
2214
2215                                 switch (iptr->opc) {
2216                                 case ICMD_LRETURN:
2217                                         M_IST(REG_RESULT2, REG_SP, rd->memuse * 4 + 8);
2218                                         /* fall through */
2219                                 case ICMD_IRETURN:
2220                                 case ICMD_ARETURN:
2221                                         M_IST(REG_RESULT , REG_SP, rd->memuse * 4 + 4);
2222                                         break;
2223                                 case ICMD_FRETURN:
2224                                         M_FST(REG_FRESULT, REG_SP, rd->memuse * 4 + 4);
2225                                         break;
2226                                 case ICMD_DRETURN:
2227                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 4 + 4);
2228                                         break;
2229                                 }
2230
2231                                 M_ALD(REG_A0, REG_SP, rd->memuse * 4);
2232                                 M_JSR;
2233
2234                                 /* and now restore the proper return value */
2235
2236                                 switch (iptr->opc) {
2237                                 case ICMD_LRETURN:
2238                                         M_ILD(REG_RESULT2, REG_SP, rd->memuse * 4 + 8);
2239                                         /* fall through */
2240                                 case ICMD_IRETURN:
2241                                 case ICMD_ARETURN:
2242                                         M_ILD(REG_RESULT , REG_SP, rd->memuse * 4 + 4);
2243                                         break;
2244                                 case ICMD_FRETURN:
2245                                         M_FLD(REG_FRESULT, REG_SP, rd->memuse * 4 + 4);
2246                                         break;
2247                                 case ICMD_DRETURN:
2248                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 4 + 4);
2249                                         break;
2250                                 }
2251                         }
2252 #endif
2253
2254                         /* restore return address                                         */
2255
2256                         if (!jd->isleafmethod) {
2257                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
2258                                    may have a displacement overflow. */
2259
2260                                 M_ALD(REG_ITMP1, REG_SP, p * 4 + LA_LR_OFFSET);
2261                                 M_MTLR(REG_ITMP1);
2262                         }
2263
2264                         /* restore saved registers                                        */
2265
2266                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
2267                                 p--; M_ILD(rd->savintregs[i], REG_SP, p * 4);
2268                         }
2269                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
2270                                 p -= 2; M_DLD(rd->savfltregs[i], REG_SP, p * 4);
2271                         }
2272
2273                         /* deallocate stack                                               */
2274
2275                         if (cd->stackframesize)
2276                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 4);
2277
2278                         M_RET;
2279                         ALIGNCODENOP;
2280                         }
2281                         break;
2282
2283
2284                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
2285                         {
2286                         s4 i, l;
2287                         branch_target_t *table;
2288
2289                         table = iptr->dst.table;
2290
2291                         l = iptr->sx.s23.s2.tablelow;
2292                         i = iptr->sx.s23.s3.tablehigh;
2293
2294                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2295                         if (l == 0)
2296                                 M_INTMOVE(s1, REG_ITMP1);
2297                         else if (l <= 32768)
2298                                 M_LDA(REG_ITMP1, s1, -l);
2299                         else {
2300                                 ICONST(REG_ITMP2, l);
2301                                 M_ISUB(s1, REG_ITMP2, REG_ITMP1);
2302                         }
2303
2304                         i = i - l + 1;
2305
2306                         /* range check */
2307
2308                         M_CMPUI(REG_ITMP1, i - 1);
2309                         emit_bgt(cd, table[0].block);
2310
2311                         /* build jump table top down and use address of lowest entry */
2312
2313                         table += i;
2314
2315                         while (--i >= 0) {
2316                                 dseg_add_target(cd, table->block);
2317                                 --table;
2318                         }
2319
2320                         /* length of dataseg after last dseg_add_target is used by load */
2321
2322                         M_SLL_IMM(REG_ITMP1, 2, REG_ITMP1);
2323                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
2324                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
2325                         M_MTCTR(REG_ITMP2);
2326                         M_RTS;
2327                         ALIGNCODENOP;
2328                         }
2329                         break;
2330
2331
2332                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
2333                         {
2334                         s4 i;
2335                         lookup_target_t *lookup;
2336
2337                         lookup = iptr->dst.lookup;
2338
2339                         i = iptr->sx.s23.s2.lookupcount;
2340
2341                         MCODECHECK((i<<2)+8);
2342                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2343
2344                         while (--i >= 0) {
2345                                 if ((lookup->value >= -32768) && (lookup->value <= 32767)) {
2346                                         M_CMPI(s1, lookup->value);
2347                                 }
2348                                 else {
2349                                         disp = dseg_add_s4(cd, lookup->value);
2350                                         M_ILD(REG_ITMP2, REG_PV, disp);
2351                                         M_CMP(s1, REG_ITMP2);
2352                                 }
2353                                 emit_beq(cd, lookup->target.block);
2354                                 lookup++;
2355                         }
2356
2357                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
2358                         ALIGNCODENOP;
2359                         break;
2360                         }
2361
2362
2363                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2364
2365                         bte = iptr->sx.s23.s3.bte;
2366                         md  = bte->md;
2367                         goto gen_method;
2368
2369                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2370
2371                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2372                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2373                 case ICMD_INVOKEINTERFACE:
2374
2375                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2376
2377                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2378                                 lm = NULL;
2379                                 um = iptr->sx.s23.s3.um;
2380                                 md = um->methodref->parseddesc.md;
2381                         }
2382                         else {
2383                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2384                                 um = NULL;
2385                                 md = lm->parseddesc;
2386                         }
2387
2388 gen_method:
2389                         s3 = md->paramcount;
2390
2391                         MCODECHECK((s3 << 1) + 64);
2392
2393                         /* copy arguments to registers or stack location */
2394
2395                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2396                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2397                                 d   = md->params[s3].regoff;
2398
2399                                 /* Already Preallocated? */
2400                                 if (var->flags & PREALLOC)
2401                                         continue;
2402
2403                                 if (IS_INT_LNG_TYPE(var->type)) {
2404                                         if (!md->params[s3].inmemory) {
2405                                                 if (IS_2_WORD_TYPE(var->type)) {
2406                                                         s1 = emit_load(jd, iptr, var, d);
2407                                                         M_LNGMOVE(s1, d);
2408                                                 }
2409                                                 else {
2410                                                         s1 = emit_load(jd, iptr, var, d);
2411                                                         M_INTMOVE(s1, d);
2412                                                 }
2413                                         }
2414                                         else {
2415                                                 if (IS_2_WORD_TYPE(var->type)) {
2416                                                         s1 = emit_load(jd, iptr, var, REG_ITMP12_PACKED);
2417                                                         M_LST(s1, REG_SP, d * 4);
2418                                                 }
2419                                                 else {
2420                                                         s1 = emit_load(jd, iptr, var, REG_ITMP1);
2421                                                         M_IST(s1, REG_SP, d * 4);
2422                                                 }
2423                                         }
2424                                 }
2425                                 else {
2426                                         if (!md->params[s3].inmemory) {
2427                                                 s1 = emit_load(jd, iptr, var, d);
2428                                                 M_FLTMOVE(s1, d);
2429                                         }
2430                                         else {
2431                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2432                                                 if (IS_2_WORD_TYPE(var->type))
2433                                                         M_DST(s1, REG_SP, d * 4);
2434                                                 else
2435                                                         M_FST(s1, REG_SP, d * 4);
2436                                         }
2437                                 }
2438                         }
2439
2440                         switch (iptr->opc) {
2441                         case ICMD_BUILTIN:
2442                                 disp = dseg_add_functionptr(cd, bte->fp);
2443
2444                                 M_ALD(REG_PV, REG_PV, disp);  /* pointer to built-in-function */
2445
2446                                 /* generate the actual call */
2447
2448                                 M_MTCTR(REG_PV);
2449                                 M_JSR;
2450                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2451                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2452                                 M_MFLR(REG_ITMP1);
2453                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2454
2455                                 emit_exception_check(cd, iptr);
2456                                 break;
2457
2458                         case ICMD_INVOKESPECIAL:
2459                                 emit_nullpointer_check(cd, iptr, REG_A0);
2460                                 /* fall-through */
2461
2462                         case ICMD_INVOKESTATIC:
2463                                 if (lm == NULL) {
2464                                         disp = dseg_add_unique_address(cd, um);
2465
2466                                         codegen_addpatchref(cd, PATCHER_invokestatic_special,
2467                                                                                 um, disp);
2468                                 }
2469                                 else
2470                                         disp = dseg_add_address(cd, lm->stubroutine);
2471
2472                                 M_ALD(REG_PV, REG_PV, disp);
2473
2474                                 /* generate the actual call */
2475
2476                                 M_MTCTR(REG_PV);
2477                                 M_JSR;
2478                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2479                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2480                                 M_MFLR(REG_ITMP1);
2481                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2482                                 break;
2483
2484                         case ICMD_INVOKEVIRTUAL:
2485                                 if (lm == NULL) {
2486                                         codegen_addpatchref(cd, PATCHER_invokevirtual, um, 0);
2487
2488                                         s1 = 0;
2489                                 }
2490                                 else {
2491                                         s1 = OFFSET(vftbl_t, table[0]) +
2492                                                 sizeof(methodptr) * lm->vftblindex;
2493                                 }
2494
2495                                 /* implicit null-pointer check */
2496                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_objectheader, vftbl));
2497                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2498
2499                                 /* generate the actual call */
2500
2501                                 M_MTCTR(REG_PV);
2502                                 M_JSR;
2503                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2504                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2505                                 M_MFLR(REG_ITMP1);
2506                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2507                                 break;
2508
2509                         case ICMD_INVOKEINTERFACE:
2510                                 if (lm == NULL) {
2511                                         codegen_addpatchref(cd, PATCHER_invokeinterface, um, 0);
2512
2513                                         s1 = 0;
2514                                         s2 = 0;
2515                                 }
2516                                 else {
2517                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2518                                                 sizeof(methodptr*) * lm->class->index;
2519
2520                                         s2 = sizeof(methodptr) * (lm - lm->class->methods);
2521                                 }
2522
2523                                 /* implicit null-pointer check */
2524                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_objectheader, vftbl));
2525                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2526                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2527
2528                                 /* generate the actual call */
2529
2530                                 M_MTCTR(REG_PV);
2531                                 M_JSR;
2532                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2533                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2534                                 M_MFLR(REG_ITMP1);
2535                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2536                                 break;
2537                         }
2538
2539                         /* store return value */
2540
2541                         d = md->returntype.type;
2542
2543                         if (d != TYPE_VOID) {
2544                                 if (IS_INT_LNG_TYPE(d)) {
2545                                         if (IS_2_WORD_TYPE(d)) {
2546                                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
2547                                                 M_LNGMOVE(REG_RESULT_PACKED, s1);
2548                                         }
2549                                         else {
2550                                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2551                                                 M_INTMOVE(REG_RESULT, s1);
2552                                         }
2553                                 }
2554                                 else {
2555                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2556                                         M_FLTMOVE(REG_FRESULT, s1);
2557                                 }
2558                                 emit_store_dst(jd, iptr, s1);
2559                         }
2560                         break;
2561
2562
2563                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2564
2565                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2566                                 /* object type cast-check */
2567
2568                                 classinfo *super;
2569                                 s4         superindex;
2570
2571                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2572                                         super      = NULL;
2573                                         superindex = 0;
2574                                 }
2575                                 else {
2576                                         super      = iptr->sx.s23.s3.c.cls;
2577                                         superindex = super->index;
2578                                 }
2579
2580                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2581                                         CODEGEN_CRITICAL_SECTION_NEW;
2582
2583                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2584
2585                                 /* if class is not resolved, check which code to call */
2586
2587                                 if (super == NULL) {
2588                                         M_TST(s1);
2589                                         emit_label_beq(cd, BRANCH_LABEL_1);
2590
2591                                         disp = dseg_add_unique_s4(cd, 0);         /* super->flags */
2592
2593                                         codegen_addpatchref(cd,
2594                                                                                 PATCHER_resolve_classref_to_flags,
2595                                                                                 iptr->sx.s23.s3.c.ref,
2596                                                                                 disp);
2597
2598                                         M_ILD(REG_ITMP2, REG_PV, disp);
2599                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2600                                         emit_label_beq(cd, BRANCH_LABEL_2);
2601                                 }
2602
2603                                 /* interface checkcast code */
2604
2605                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2606                                         if (super == NULL) {
2607                                                 codegen_addpatchref(cd,
2608                                                                                         PATCHER_checkcast_interface,
2609                                                                                         iptr->sx.s23.s3.c.ref,
2610                                                                                         0);
2611                                         }
2612                                         else {
2613                                                 M_TST(s1);
2614                                                 emit_label_beq(cd, BRANCH_LABEL_3);
2615                                         }
2616
2617                                         M_ALD(REG_ITMP2, s1, OFFSET(java_objectheader, vftbl));
2618                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2619                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2620                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2621
2622                                         M_ALD(REG_ITMP3, REG_ITMP2,
2623                                                   OFFSET(vftbl_t, interfacetable[0]) -
2624                                                   superindex * sizeof(methodptr*));
2625                                         M_TST(REG_ITMP3);
2626                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2627
2628                                         if (super == NULL)
2629                                                 emit_label_br(cd, BRANCH_LABEL_4);
2630                                         else
2631                                                 emit_label(cd, BRANCH_LABEL_3);
2632                                 }
2633
2634                                 /* class checkcast code */
2635
2636                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2637                                         if (super == NULL) {
2638                                                 emit_label(cd, BRANCH_LABEL_2);
2639
2640                                                 disp = dseg_add_unique_address(cd, NULL);
2641
2642                                                 codegen_addpatchref(cd, PATCHER_resolve_classref_to_vftbl,
2643                                                                                         iptr->sx.s23.s3.c.ref,
2644                                                                                         disp);
2645                                         }
2646                                         else {
2647                                                 disp = dseg_add_address(cd, super->vftbl);
2648
2649                                                 M_TST(s1);
2650                                                 emit_label_beq(cd, BRANCH_LABEL_5);
2651                                         }
2652
2653                                         M_ALD(REG_ITMP2, s1, OFFSET(java_objectheader, vftbl));
2654
2655                                         CODEGEN_CRITICAL_SECTION_START;
2656
2657                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2658                                         M_ALD(REG_ITMP2, REG_PV, disp);
2659                                         if (s1 != REG_ITMP1) {
2660                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2661                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2662
2663                                                 CODEGEN_CRITICAL_SECTION_END;
2664
2665                                                 M_ISUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2666                                         }
2667                                         else {
2668                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2669                                                 M_ISUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2670                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2671                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2672
2673                                                 CODEGEN_CRITICAL_SECTION_END;
2674                                         }
2675                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2676                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2677
2678                                         if (super != NULL)
2679                                                 emit_label(cd, BRANCH_LABEL_5);
2680                                 }
2681
2682                                 if (super == NULL) {
2683                                         emit_label(cd, BRANCH_LABEL_1);
2684                                         emit_label(cd, BRANCH_LABEL_4);
2685                                 }
2686
2687                                 d = codegen_reg_of_dst(jd, iptr, s1);
2688                         }
2689                         else {
2690                                 /* array type cast-check */
2691
2692                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2693                                 M_INTMOVE(s1, REG_A0);
2694
2695                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2696                                         disp = dseg_add_unique_address(cd, NULL);
2697
2698                                         codegen_addpatchref(cd, PATCHER_resolve_classref_to_classinfo,
2699                                                                                 iptr->sx.s23.s3.c.ref,
2700                                                                                 disp);
2701                                 }
2702                                 else
2703                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2704
2705                                 M_ALD(REG_A1, REG_PV, disp);
2706                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2707                                 M_ALD(REG_ITMP2, REG_PV, disp);
2708                                 M_MTCTR(REG_ITMP2);
2709                                 M_JSR;
2710                                 M_TST(REG_RESULT);
2711                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2712
2713                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2714                                 d = codegen_reg_of_dst(jd, iptr, s1);
2715                         }
2716                         M_INTMOVE(s1, d);
2717                         emit_store_dst(jd, iptr, d);
2718                         break;
2719
2720                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2721
2722                         {
2723                         classinfo *super;
2724                         s4         superindex;
2725
2726                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2727                                 super      = NULL;
2728                                 superindex = 0;
2729                         }
2730                         else {
2731                                 super      = iptr->sx.s23.s3.c.cls;
2732                                 superindex = super->index;
2733                         }
2734
2735                         if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2736                                 CODEGEN_CRITICAL_SECTION_NEW;
2737
2738                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2739
2740                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2741                         if (s1 == d) {
2742                                 M_MOV(s1, REG_ITMP1);
2743                                 s1 = REG_ITMP1;
2744                         }
2745
2746                         M_CLR(d);
2747
2748                         /* if class is not resolved, check which code to call */
2749
2750                         if (super == NULL) {
2751                                 M_TST(s1);
2752                                 emit_label_beq(cd, BRANCH_LABEL_1);
2753
2754                                 disp = dseg_add_unique_s4(cd, 0);             /* super->flags */
2755
2756                                 codegen_addpatchref(cd, PATCHER_resolve_classref_to_flags,
2757                                                                         iptr->sx.s23.s3.c.ref, disp);
2758
2759                                 M_ILD(REG_ITMP3, REG_PV, disp);
2760                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2761                                 emit_label_beq(cd, BRANCH_LABEL_2);
2762                         }
2763
2764                         /* interface instanceof code */
2765
2766                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2767                                 if (super == NULL) {
2768                                         codegen_addpatchref(cd,
2769                                                                                 PATCHER_instanceof_interface,
2770                                                                                 iptr->sx.s23.s3.c.ref, 0);
2771                                 }
2772                                 else {
2773                                         M_TST(s1);
2774                                         emit_label_beq(cd, BRANCH_LABEL_3);
2775                                 }
2776
2777                                 M_ALD(REG_ITMP1, s1, OFFSET(java_objectheader, vftbl));
2778                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2779                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2780                                 M_BLE(4);
2781                                 M_ALD(REG_ITMP1, REG_ITMP1,
2782                                           OFFSET(vftbl_t, interfacetable[0]) -
2783                                           superindex * sizeof(methodptr*));
2784                                 M_TST(REG_ITMP1);
2785                                 M_BEQ(1);
2786                                 M_IADD_IMM(REG_ZERO, 1, d);
2787
2788                                 if (super == NULL)
2789                                         emit_label_br(cd, BRANCH_LABEL_4);
2790                                 else
2791                                         emit_label(cd, BRANCH_LABEL_3);
2792                         }
2793
2794                         /* class instanceof code */
2795
2796                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2797                                 if (super == NULL) {
2798                                         emit_label(cd, BRANCH_LABEL_2);
2799
2800                                         disp = dseg_add_unique_address(cd, NULL);
2801
2802                                         codegen_addpatchref(cd, PATCHER_resolve_classref_to_vftbl,
2803                                                                                 iptr->sx.s23.s3.c.ref,
2804                                                                                 disp);
2805                                 }
2806                                 else {
2807                                         disp = dseg_add_address(cd, super->vftbl);
2808
2809                                         M_TST(s1);
2810                                         emit_label_beq(cd, BRANCH_LABEL_5);
2811                                 }
2812
2813                                 M_ALD(REG_ITMP1, s1, OFFSET(java_objectheader, vftbl));
2814                                 M_ALD(REG_ITMP2, REG_PV, disp);
2815
2816                                 CODEGEN_CRITICAL_SECTION_START;
2817
2818                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2819                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2820                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2821
2822                                 CODEGEN_CRITICAL_SECTION_END;
2823
2824                                 M_ISUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2825                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2826                                 M_CLR(d);
2827                                 M_BGT(1);
2828                                 M_IADD_IMM(REG_ZERO, 1, d);
2829
2830                                 if (super != NULL)
2831                                         emit_label(cd, BRANCH_LABEL_5);
2832                         }
2833
2834                         if (super == NULL) {
2835                                 emit_label(cd, BRANCH_LABEL_1);
2836                                 emit_label(cd, BRANCH_LABEL_4);
2837                         }
2838
2839                         emit_store_dst(jd, iptr, d);
2840                         }
2841                         break;
2842
2843                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2844
2845                         /* check for negative sizes and copy sizes to stack if necessary  */
2846
2847                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2848
2849                         for (s1 = iptr->s1.argcount; --s1 >= 0;) {
2850                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2851
2852                                 /* copy SAVEDVAR sizes to stack */
2853
2854                                 /* Already Preallocated? */
2855                                 if (!(var->flags & PREALLOC)) {
2856                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2857 #if defined(__DARWIN__)
2858                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 4);
2859 #else
2860                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + 3) * 4);
2861 #endif
2862                                 }
2863                         }
2864
2865                         /* a0 = dimension count */
2866
2867                         ICONST(REG_A0, iptr->s1.argcount);
2868
2869                         /* is patcher function set? */
2870
2871                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2872                                 disp = dseg_add_unique_address(cd, NULL);
2873
2874                                 codegen_addpatchref(cd, PATCHER_resolve_classref_to_classinfo,
2875                                                                         iptr->sx.s23.s3.c.ref, disp);
2876                         }
2877                         else
2878                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2879
2880                         /* a1 = arraydescriptor */
2881
2882                         M_ALD(REG_A1, REG_PV, disp);
2883
2884                         /* a2 = pointer to dimensions = stack pointer */
2885
2886 #if defined(__DARWIN__)
2887                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 4);
2888 #else
2889                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 4);
2890 #endif
2891
2892                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2893                         M_ALD(REG_ITMP3, REG_PV, disp);
2894                         M_MTCTR(REG_ITMP3);
2895                         M_JSR;
2896
2897                         /* check for exception before result assignment */
2898
2899                         emit_exception_check(cd, iptr);
2900
2901                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2902                         M_INTMOVE(REG_RESULT, d);
2903                         emit_store_dst(jd, iptr, d);
2904                         break;
2905
2906                 default:
2907                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2908                                                                                    iptr->opc);
2909                         return false;
2910         } /* switch */
2911
2912         } /* for instruction */
2913
2914         } /* if (bptr -> flags >= BBREACHED) */
2915         } /* for basic block */
2916
2917         dseg_createlinenumbertable(cd);
2918
2919         /* generate stubs */
2920
2921         emit_patcher_stubs(jd);
2922         REPLACEMENT_EMIT_STUBS(jd);
2923
2924         /* everything's ok */
2925
2926         return true;
2927 }
2928
2929
2930 /* codegen_emit_stub_compiler **************************************************
2931
2932    Emits a stub routine which calls the compiler.
2933
2934 *******************************************************************************/
2935
2936 void codegen_emit_stub_compiler(jitdata *jd)
2937 {
2938         methodinfo  *m;
2939         codegendata *cd;
2940
2941         /* get required compiler data */
2942
2943         m  = jd->m;
2944         cd = jd->cd;
2945
2946         /* code for the stub */
2947
2948         M_ALD_INTERN(REG_ITMP1, REG_PV, -2 * SIZEOF_VOID_P);
2949         M_ALD_INTERN(REG_PV, REG_PV, -3 * SIZEOF_VOID_P);
2950         M_MTCTR(REG_PV);
2951         M_RTS;
2952 }
2953
2954
2955 /* codegen_emit_stub_native ****************************************************
2956
2957    Emits a stub routine which calls a native method.
2958
2959 *******************************************************************************/
2960
2961 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f)
2962 {
2963         methodinfo  *m;
2964         codeinfo    *code;
2965         codegendata *cd;
2966         methoddesc  *md;
2967         s4           nativeparams;
2968         s4           i, j;                 /* count variables                    */
2969         s4           t;
2970         s4           s1, s2, disp;
2971         s4           funcdisp;
2972
2973         /* get required compiler data */
2974
2975         m    = jd->m;
2976         code = jd->code;
2977         cd   = jd->cd;
2978
2979         /* set some variables */
2980
2981         md = m->parseddesc;
2982         nativeparams = (m->flags & ACC_STATIC) ? 2 : 1;
2983
2984         /* calculate stackframe size */
2985
2986         cd->stackframesize =
2987                 sizeof(stackframeinfo) / SIZEOF_VOID_P +
2988                 sizeof(localref_table) / SIZEOF_VOID_P +
2989                 4 +                             /* 4 stackframeinfo arguments (darwin)*/
2990                 nmd->paramcount * 2 +           /* assume all arguments are doubles   */
2991                 nmd->memuse;
2992
2993         /* keep stack 16-byte aligned */
2994
2995         cd->stackframesize = (cd->stackframesize + 3) & ~3;
2996
2997         /* create method header */
2998
2999         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
3000         (void) dseg_add_unique_s4(cd, cd->stackframesize * 4); /* FrameSize       */
3001         (void) dseg_add_unique_s4(cd, 0);                      /* IsSync          */
3002         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
3003         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
3004         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
3005         (void) dseg_addlinenumbertablesize(cd);
3006         (void) dseg_add_unique_s4(cd, 0);                      /* ExTableSize     */
3007
3008         /* generate code */
3009
3010         M_MFLR(REG_ZERO);
3011         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
3012         M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 4));
3013
3014         /* get function address (this must happen before the stackframeinfo) */
3015
3016         funcdisp = dseg_add_functionptr(cd, f);
3017
3018 #if !defined(WITH_STATIC_CLASSPATH)
3019         if (f == NULL)
3020                 codegen_addpatchref(cd, PATCHER_resolve_native_function, m, funcdisp);
3021 #endif
3022
3023         /* emit trace code */
3024
3025         emit_verbosecall_enter(jd);
3026
3027 #if defined(ENABLE_GC_CACAO)
3028         /* Save callee saved integer registers in stackframeinfo (GC may
3029            need to recover them during a collection). */
3030
3031         disp = cd->stackframesize * 4 - sizeof(stackframeinfo) +
3032                 OFFSET(stackframeinfo, intregs);
3033
3034         for (i = 0; i < INT_SAV_CNT; i++)
3035                 M_AST(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
3036 #endif
3037
3038         /* save integer and float argument registers */
3039
3040         j = 0;
3041
3042         for (i = 0; i < md->paramcount; i++) {
3043                 t = md->paramtypes[i].type;
3044
3045                 if (IS_INT_LNG_TYPE(t)) {
3046                         if (!md->params[i].inmemory) {
3047                                 s1 = md->params[i].regoff;
3048
3049                                 if (IS_2_WORD_TYPE(t)) {
3050                                         M_IST(GET_HIGH_REG(s1), REG_SP, LA_SIZE + 4 * 4 + j * 4);
3051                                         j++;
3052                                         M_IST(GET_LOW_REG(s1), REG_SP, LA_SIZE + 4 * 4 + j * 4);
3053                                 }
3054                                 else
3055                                         M_IST(s1, REG_SP, LA_SIZE + 4 * 4 + j * 4);
3056
3057                                 j++;
3058                         }
3059                 }
3060         }
3061
3062         for (i = 0; i < md->paramcount; i++) {
3063                 if (IS_FLT_DBL_TYPE(md->paramtypes[i].type)) {
3064                         if (!md->params[i].inmemory) {
3065                                 s1 = md->params[i].regoff;
3066                                 M_DST(s1, REG_SP, LA_SIZE + 4 * 4 + j * 8);
3067                                 j++;
3068                         }
3069                 }
3070         }
3071
3072         /* create native stack info */
3073
3074         M_AADD_IMM(REG_SP, cd->stackframesize * 4, REG_A0);
3075         M_MOV(REG_PV, REG_A1);
3076         M_AADD_IMM(REG_SP, cd->stackframesize * 4, REG_A2);
3077         M_ALD(REG_A3, REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
3078         disp = dseg_add_functionptr(cd, codegen_start_native_call);
3079         M_ALD(REG_ITMP1, REG_PV, disp);
3080         M_MTCTR(REG_ITMP1);
3081         M_JSR;
3082
3083         /* restore integer and float argument registers */
3084
3085         j = 0;
3086
3087         for (i = 0; i < md->paramcount; i++) {
3088                 t = md->paramtypes[i].type;
3089
3090                 if (IS_INT_LNG_TYPE(t)) {
3091                         if (!md->params[i].inmemory) {
3092                                 s1 = md->params[i].regoff;
3093
3094                                 if (IS_2_WORD_TYPE(t)) {
3095                                         M_ILD(GET_HIGH_REG(s1), REG_SP, LA_SIZE + 4 * 4 + j * 4);
3096                                         j++;
3097                                         M_ILD(GET_LOW_REG(s1), REG_SP, LA_SIZE + 4 * 4 + j * 4);
3098                                 }
3099                                 else
3100                                         M_ILD(s1, REG_SP, LA_SIZE + 4 * 4 + j * 4);
3101
3102                                 j++;
3103                         }
3104                 }
3105         }
3106
3107         for (i = 0; i < md->paramcount; i++) {
3108                 if (IS_FLT_DBL_TYPE(md->paramtypes[i].type)) {
3109                         if (!md->params[i].inmemory) {
3110                                 s1 = md->params[i].regoff;
3111                                 M_DLD(s1, REG_SP, LA_SIZE + 4 * 4 + j * 8);
3112                                 j++;
3113                         }
3114                 }
3115         }
3116
3117         /* copy or spill arguments to new locations */
3118
3119         for (i = md->paramcount - 1, j = i + nativeparams; i >= 0; i--, j--) {
3120                 t = md->paramtypes[i].type;
3121
3122                 if (IS_INT_LNG_TYPE(t)) {
3123                         if (!md->params[i].inmemory) {
3124                                 s1 = md->params[i].regoff;
3125                                 s2 = nmd->params[j].regoff;
3126
3127                                 if (!nmd->params[j].inmemory) {
3128                                         if (IS_2_WORD_TYPE(t))
3129                                                 M_LNGMOVE(s1, s2);
3130                                         else
3131                                                 M_INTMOVE(s1, s2);
3132                                 }
3133                                 else {
3134                                         if (IS_2_WORD_TYPE(t))
3135                                                 M_LST(s1, REG_SP, s2 * 4);
3136                                         else
3137                                                 M_IST(s1, REG_SP, s2 * 4);
3138                                 }
3139                         }
3140                         else {
3141                                 s1 = md->params[i].regoff + cd->stackframesize;
3142                                 s2 = nmd->params[j].regoff;
3143
3144                                 M_ILD(REG_ITMP1, REG_SP, s1 * 4);
3145                                 if (IS_2_WORD_TYPE(t))
3146                                         M_ILD(REG_ITMP2, REG_SP, s1 * 4 + 4);
3147
3148                                 M_IST(REG_ITMP1, REG_SP, s2 * 4);
3149                                 if (IS_2_WORD_TYPE(t))
3150                                         M_IST(REG_ITMP2, REG_SP, s2 * 4 + 4);
3151                         }
3152                 }
3153                 else {
3154                         /* We only copy spilled float arguments, as the float
3155                            argument registers keep unchanged. */
3156
3157                         if (md->params[i].inmemory) {
3158                                 s1 = md->params[i].regoff + cd->stackframesize;
3159                                 s2 = nmd->params[j].regoff;
3160
3161                                 if (IS_2_WORD_TYPE(t)) {
3162                                         M_DLD(REG_FTMP1, REG_SP, s1 * 4);
3163                                         M_DST(REG_FTMP1, REG_SP, s2 * 4);
3164                                 }
3165                                 else {
3166                                         M_FLD(REG_FTMP1, REG_SP, s1 * 4);
3167                                         M_FST(REG_FTMP1, REG_SP, s2 * 4);
3168                                 }
3169                         }
3170                 }
3171         }
3172
3173         /* put class into second argument register */
3174
3175         if (m->flags & ACC_STATIC) {
3176                 disp = dseg_add_address(cd, m->class);
3177                 M_ALD(REG_A1, REG_PV, disp);
3178         }
3179
3180         /* put env into first argument register */
3181
3182         disp = dseg_add_address(cd, _Jv_env);
3183         M_ALD(REG_A0, REG_PV, disp);
3184
3185         /* generate the actual native call */
3186
3187         M_ALD(REG_ITMP3, REG_PV, funcdisp);
3188         M_MTCTR(REG_ITMP3);
3189         M_JSR;
3190
3191         /* print call trace */
3192
3193         emit_verbosecall_exit(jd);
3194
3195         /* save return value */
3196
3197         switch (md->returntype.type) {
3198         case TYPE_INT:
3199         case TYPE_ADR:
3200                 M_IST(REG_RESULT, REG_SP, LA_SIZE + 1 * 4);
3201                 break;
3202         case TYPE_LNG:
3203                 M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 4);
3204                 break;
3205         case TYPE_FLT:
3206                 M_FST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 4);
3207                 break;
3208         case TYPE_DBL:
3209                 M_DST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 4);
3210                 break;
3211         case TYPE_VOID:
3212                 break;
3213         }
3214
3215         /* remove native stackframe info */
3216
3217         M_AADD_IMM(REG_SP, cd->stackframesize * 4, REG_A0);
3218         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
3219         M_ALD(REG_ITMP1, REG_PV, disp);
3220         M_MTCTR(REG_ITMP1);
3221         M_JSR;
3222         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
3223
3224         /* restore return value */
3225
3226         switch (md->returntype.type) {
3227         case TYPE_INT:
3228         case TYPE_ADR:
3229                 M_ILD(REG_RESULT, REG_SP, LA_SIZE + 1 * 4);
3230                 break;
3231         case TYPE_LNG:
3232                 M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 4);
3233                 break;
3234         case TYPE_FLT:
3235                 M_FLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 4);
3236                 break;
3237         case TYPE_DBL:
3238                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 4);
3239                 break;
3240         case TYPE_VOID:
3241                 break;
3242         }
3243
3244 #if defined(ENABLE_GC_CACAO)
3245         /* Restore callee saved integer registers from stackframeinfo (GC
3246            might have modified them during a collection). */
3247
3248         disp = cd->stackframesize * 4 - sizeof(stackframeinfo) +
3249                 OFFSET(stackframeinfo, intregs);
3250
3251         for (i = 0; i < INT_SAV_CNT; i++)
3252                 M_ALD(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
3253 #endif
3254
3255         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
3256         M_MTLR(REG_ITMP2_XPC);
3257         M_LDA(REG_SP, REG_SP, cd->stackframesize * 4); /* remove stackframe       */
3258
3259         /* check for exception */
3260
3261         M_TST(REG_ITMP1_XPTR);
3262         M_BNE(1);                           /* if no exception then return        */
3263
3264         M_RET;
3265
3266         /* handle exception */
3267
3268         M_IADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
3269
3270         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
3271         M_ALD(REG_ITMP3, REG_PV, disp);
3272         M_MTCTR(REG_ITMP3);
3273         M_RTS;
3274
3275         /* generate patcher stubs */
3276
3277         emit_patcher_stubs(jd);
3278 }
3279
3280
3281 /*
3282  * These are local overrides for various environment variables in Emacs.
3283  * Please do not remove this and leave it at the end of the file, where
3284  * Emacs will automagically detect them.
3285  * ---------------------------------------------------------------------
3286  * Local variables:
3287  * mode: c
3288  * indent-tabs-mode: t
3289  * c-basic-offset: 4
3290  * tab-width: 4
3291  * End:
3292  * vim:noexpandtab:sw=4:ts=4:
3293  */