src/vm/jit/powerpc/codegen.c

   1 /* src/vm/jit/powerpc/codegen.c - machine code generator for 32-bit PowerPC
   2
   3    Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31 #include <stdio.h>
  32 #include <signal.h>
  33
  34 #include "vm/types.h"
  35
  36 #include "md-abi.h"
  37
  38 #include "vm/jit/powerpc/arch.h"
  39 #include "vm/jit/powerpc/codegen.h"
  40
  41 #include "mm/memory.h"
  42
  43 #include "native/localref.h"
  44 #include "native/native.h"
  45
  46 #include "threads/lock-common.h"
  47
  48 #include "vm/builtin.h"
  49 #include "vm/exceptions.h"
  50 #include "vm/global.h"
  51 #include "vm/stringlocal.h"
  52 #include "vm/vm.h"
  53
  54 #include "vm/jit/abi.h"
  55 #include "vm/jit/abi-asm.h"
  56 #include "vm/jit/asmpart.h"
  57 #include "vm/jit/codegen-common.h"
  58 #include "vm/jit/dseg.h"
  59 #include "vm/jit/emit-common.h"
  60 #include "vm/jit/jit.h"
  61 #include "vm/jit/md.h"
  62 #include "vm/jit/methodheader.h"
  63 #include "vm/jit/parse.h"
  64 #include "vm/jit/patcher-common.h"
  65 #include "vm/jit/reg.h"
  66 #include "vm/jit/replace.h"
  67 #include "vm/jit/stacktrace.h"
  68
  69 #if defined(ENABLE_LSRA)
  70 # include "vm/jit/allocator/lsra.h"
  71 #endif
  72
  73 #include "vmcore/loader.h"
  74 #include "vmcore/options.h"
  75
  76
  77 /* codegen *********************************************************************
  78
  79    Generates machine code.
  80
  81 *******************************************************************************/
  82
  83 bool codegen_emit(jitdata *jd)
  84 {
  85         methodinfo         *m;
  86         codeinfo           *code;
  87         codegendata        *cd;
  88         registerdata       *rd;
  89         s4                  len, s1, s2, s3, d, disp;
  90         ptrint              a;
  91         varinfo            *var;
  92         basicblock         *bptr;
  93         instruction        *iptr;
  94         exception_entry    *ex;
  95         u2                  currentline;
  96         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  97         unresolved_method  *um;
  98         builtintable_entry *bte;
  99         methoddesc         *md;
 100         fieldinfo          *fi;
 101         unresolved_field   *uf;
 102         s4                  fieldtype;
 103         s4                 varindex;
 104
 105         /* get required compiler data */
 106
 107         m    = jd->m;
 108         code = jd->code;
 109         cd   = jd->cd;
 110         rd   = jd->rd;
 111
 112         /* prevent compiler warnings */
 113
 114         d         = 0;
 115         fieldtype = 0;
 116         lm        = NULL;
 117         um        = NULL;
 118         uf        = NULL;
 119         bte       = NULL;
 120
 121         {
 122         s4 i, p, t, l;
 123         s4 savedregs_num;
 124
 125         savedregs_num = 0;
 126
 127         /* space to save used callee saved registers */
 128
 129         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 130         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 131
 132         cd->stackframesize = rd->memuse + savedregs_num;
 133
 134 #if defined(ENABLE_THREADS)
 135         /* Space to save argument of monitor_enter and Return Values to
 136            survive monitor_exit. The stack position for the argument can
 137            not be shared with place to save the return register on PPC,
 138            since both values reside in R3. */
 139
 140         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 141                 cd->stackframesize += 2;
 142 #endif
 143
 144         /* create method header */
 145
 146         /* align stack to 16-bytes */
 147
 148         if (!jd->isleafmethod || JITDATA_HAS_FLAG_VERBOSECALL(jd))
 149                 ALIGN_2(cd->stackframesize);
 150
 151         else if (jd->isleafmethod && (cd->stackframesize == LA_SIZE_IN_POINTERS))
 152                 cd->stackframesize = 0;
 153
 154         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
 155         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
 156
 157 #if defined(ENABLE_THREADS)
 158         /* IsSync contains the offset relative to the stack pointer for the
 159            argument of monitor_exit used in the exception handler. Since the
 160            offset could be zero and give a wrong meaning of the flag it is
 161            offset by one.
 162         */
 163
 164         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 165                 (void) dseg_add_unique_s4(cd, (rd->memuse + 1) * 8);/* IsSync         */
 166         else
 167 #endif
 168                 (void) dseg_add_unique_s4(cd, 0);                  /* IsSync          */
 169
 170         (void) dseg_add_unique_s4(cd, jd->isleafmethod);       /* IsLeaf          */
 171         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave */
 172         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave */
 173
 174         dseg_addlinenumbertablesize(cd);
 175
 176         (void) dseg_add_unique_s4(cd, jd->exceptiontablelength); /* ExTableSize   */
 177
 178         /* create exception table */
 179
 180         for (ex = jd->exceptiontable; ex != NULL; ex = ex->down) {
 181                 dseg_add_target(cd, ex->start);
 182                 dseg_add_target(cd, ex->end);
 183                 dseg_add_target(cd, ex->handler);
 184                 (void) dseg_add_unique_address(cd, ex->catchtype.any);
 185         }
 186
 187 #if defined(ENABLE_PROFILING)
 188         /* generate method profiling code */
 189
 190         if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 191                 /* count frequency */
 192
 193                 M_ALD(REG_ITMP1, REG_PV, CodeinfoPointer);
 194                 M_ALD(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 195                 M_IADD_IMM(REG_ITMP2, 1, REG_ITMP2);
 196                 M_AST(REG_ITMP2, REG_ITMP1, OFFSET(codeinfo, frequency));
 197
 198 /*              PROFILE_CYCLE_START; */
 199         }
 200 #endif
 201
 202         /* create stack frame (if necessary) */
 203
 204         if (!jd->isleafmethod) {
 205                 M_MFLR(REG_ZERO);
 206                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 207         }
 208
 209         if (cd->stackframesize)
 210                 M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 8));
 211
 212         /* save return address and used callee saved registers */
 213
 214         p = cd->stackframesize;
 215         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 216                 p--; M_IST(rd->savintregs[i], REG_SP, p * 8);
 217         }
 218         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 219                 p--; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 220         }
 221
 222         /* take arguments out of register or stack frame */
 223
 224         md = m->parseddesc;
 225
 226         for (p = 0, l = 0; p < md->paramcount; p++) {
 227                 t = md->paramtypes[p].type;
 228                 varindex = jd->local_map[l * 5 + t];
 229
 230                 l++;
 231                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 232                         l++;
 233
 234                 if (varindex == UNUSED)
 235                         continue;
 236
 237                 var = VAR(varindex);
 238                 s1  = md->params[p].regoff;
 239
 240                 if (IS_INT_LNG_TYPE(t)) {
 241                         if (!md->params[p].inmemory) {
 242                                 if (!IS_INMEMORY(var->flags)) {
 243                                         if (IS_2_WORD_TYPE(t))
 244                                                 M_LNGMOVE(s1, var->vv.regoff);
 245                                         else
 246                                                 M_INTMOVE(s1, var->vv.regoff);
 247                                 }
 248                                 else {
 249                                         if (IS_2_WORD_TYPE(t))
 250                                                 M_LST(s1, REG_SP, var->vv.regoff);
 251                                         else
 252                                                 M_IST(s1, REG_SP, var->vv.regoff);
 253                                 }
 254                         }
 255                         else {
 256                                 if (!IS_INMEMORY(var->flags)) {
 257                                         if (IS_2_WORD_TYPE(t))
 258                                                 M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 259                                         else
 260                                                 M_ILD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 261                                 }
 262                                 else {
 263 #if 1
 264                                         M_ILD(REG_ITMP1, REG_SP, cd->stackframesize * 8 + s1);
 265                                         M_IST(REG_ITMP1, REG_SP, var->vv.regoff);
 266                                         if (IS_2_WORD_TYPE(t)) {
 267                                                 M_ILD(REG_ITMP1, REG_SP, cd->stackframesize * 8 + s1 + 4);
 268                                                 M_IST(REG_ITMP1, REG_SP, var->vv.regoff + 4);
 269                                         }
 270 #else
 271                                         /* Reuse Memory Position on Caller Stack */
 272                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 273 #endif
 274                                 }
 275                         }
 276                 }
 277                 else {
 278                         if (!md->params[p].inmemory) {
 279                                 if (!IS_INMEMORY(var->flags))
 280                                         M_FLTMOVE(s1, var->vv.regoff);
 281                                 else
 282                                         M_DST(s1, REG_SP, var->vv.regoff);
 283                         }
 284                         else {
 285                                 if (!IS_INMEMORY(var->flags))
 286                                         M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 287                                 else {
 288 #if 1
 289                                         M_DLD(REG_FTMP1, REG_SP, cd->stackframesize * 8 + s1);
 290                                         M_DST(REG_FTMP1, REG_SP, var->vv.regoff);
 291 #else
 292                                         /* Reuse Memory Position on Caller Stack */
 293                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 294 #endif
 295                                 }
 296                         }
 297                 }
 298         }
 299
 300 #if defined(ENABLE_THREADS)
 301         /* call monitorenter function */
 302
 303         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 304                 /* stack offset for monitor argument */
 305
 306                 s1 = rd->memuse;
 307
 308 # if !defined(NDEBUG)
 309                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 310                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 311
 312                         for (p = 0; p < INT_ARG_CNT; p++)
 313                                 M_IST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 314
 315                         for (p = 0; p < FLT_ARG_CNT; p++)
 316                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 317
 318                         s1 += LA_SIZE_IN_POINTERS + ARG_CNT;
 319                 }
 320 # endif
 321
 322                 disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
 323                 M_ALD(REG_ITMP3, REG_PV, disp);
 324                 M_MTCTR(REG_ITMP3);
 325
 326                 /* get or test the lock object */
 327
 328                 if (m->flags & ACC_STATIC) {
 329                         disp = dseg_add_address(cd, &m->class->object.header);
 330                         M_ALD(REG_A0, REG_PV, disp);
 331                 }
 332                 else {
 333                         M_TST(REG_A0);
 334                         M_BNE(1);
 335                         M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
 336                 }
 337
 338                 M_AST(REG_A0, REG_SP, s1 * 8);
 339                 M_JSR;
 340
 341 # if !defined(NDEBUG)
 342                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 343                         for (p = 0; p < INT_ARG_CNT; p++)
 344                                 M_ILD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + p * 8);
 345
 346                         for (p = 0; p < FLT_ARG_CNT; p++)
 347                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + (INT_ARG_CNT + p) * 8);
 348
 349                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 350                 }
 351 # endif
 352         }
 353 #endif /* defined(ENABLE_THREADS) */
 354
 355         /* call trace function */
 356
 357         emit_verbosecall_enter(jd);
 358         }
 359
 360         /* end of header generation */
 361
 362         /* create replacement points */
 363
 364         REPLACEMENT_POINTS_INIT(cd, jd);
 365
 366         /* walk through all basic blocks */
 367
 368         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 369
 370                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 371
 372                 if (bptr->flags >= BBREACHED) {
 373                 /* branch resolving */
 374
 375                 codegen_resolve_branchrefs(cd, bptr);
 376
 377                 /* handle replacement points */
 378
 379                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 380
 381 #if defined(ENABLE_PROFILING)
 382                 /* generate basicblock profiling code */
 383
 384                 if (JITDATA_HAS_FLAG_INSTRUMENT(jd)) {
 385                         /* count frequency */
 386
 387                         disp = dseg_add_address(cd, code->bbfrequency);
 388                         M_ALD(REG_ITMP2, REG_PV, disp);
 389                         M_ALD(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 390                         M_IADD_IMM(REG_ITMP3, 1, REG_ITMP3);
 391                         M_AST(REG_ITMP3, REG_ITMP2, bptr->nr * 4);
 392
 393                         /* if this is an exception handler, start profiling again */
 394
 395 /*                      if (bptr->type == BBTYPE_EXH) */
 396 /*                              PROFILE_CYCLE_START; */
 397                 }
 398 #endif
 399
 400                 /* copy interface registers to their destination */
 401
 402                 len = bptr->indepth;
 403                 MCODECHECK(64+len);
 404
 405 #if defined(ENABLE_LSRA)
 406                 if (opt_lsra) {
 407                         while (src != NULL) {
 408                                 len--;
 409                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 410                                         /* d = reg_of_var(m, src, REG_ITMP1); */
 411                                         if (!IS_INMEMORY(src->flags))
 412                                                 d = src->vv.regoff;
 413                                         else
 414                                                 d = REG_ITMP1;
 415                                         M_INTMOVE(REG_ITMP1, d);
 416                                         emit_store(jd, NULL, src, d);
 417                                 }
 418                                 src = src->prev;
 419                         }
 420                 } else {
 421 #endif
 422                 while (len > 0) {
 423                         len--;
 424                         var = VAR(bptr->invars[len]);
 425                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 426                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 427                                 M_INTMOVE(REG_ITMP1, d);
 428                                 emit_store(jd, NULL, var, d);
 429                         }
 430                         else {
 431                                 assert((var->flags & INOUT));
 432                         }
 433                 }
 434
 435 #if defined(ENABLE_LSRA)
 436                 }
 437 #endif
 438                 /* walk through all instructions */
 439
 440                 len = bptr->icount;
 441                 currentline = 0;
 442
 443                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 444                         if (iptr->line != currentline) {
 445                                 dseg_addlinenumber(cd, iptr->line);
 446                                 currentline = iptr->line;
 447                         }
 448
 449                         MCODECHECK(64);   /* an instruction usually needs < 64 words      */
 450
 451                 switch (iptr->opc) {
 452                 case ICMD_NOP:        /* ...  ==> ...                                 */
 453                 case ICMD_POP:        /* ..., value  ==> ...                          */
 454                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 455                         break;
 456
 457                 case ICMD_INLINE_START:
 458
 459                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 460                         break;
 461
 462                 case ICMD_INLINE_BODY:
 463
 464                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 465                         dseg_addlinenumber_inline_start(cd, iptr);
 466                         dseg_addlinenumber(cd, iptr->line);
 467                         break;
 468
 469                 case ICMD_INLINE_END:
 470
 471                         dseg_addlinenumber_inline_end(cd, iptr);
 472                         dseg_addlinenumber(cd, iptr->line);
 473                         break;
 474
 475                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 476
 477                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 478                         emit_nullpointer_check(cd, iptr, s1);
 479                         break;
 480
 481                 /* constant operations ************************************************/
 482
 483                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 484
 485                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 486                         ICONST(d, iptr->sx.val.i);
 487                         emit_store_dst(jd, iptr, d);
 488                         break;
 489
 490                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 491
 492                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 493                         LCONST(d, iptr->sx.val.l);
 494                         emit_store_dst(jd, iptr, d);
 495                         break;
 496
 497                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 498
 499                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 500                         a = dseg_add_float(cd, iptr->sx.val.f);
 501                         M_FLD(d, REG_PV, a);
 502                         emit_store_dst(jd, iptr, d);
 503                         break;
 504
 505                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 506
 507                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 508                         a = dseg_add_double(cd, iptr->sx.val.d);
 509                         M_DLD(d, REG_PV, a);
 510                         emit_store_dst(jd, iptr, d);
 511                         break;
 512
 513                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 514
 515                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 516
 517                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 518                                 constant_classref *cr = iptr->sx.val.c.ref;;
 519
 520                                 disp = dseg_add_unique_address(cd, cr);
 521
 522                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
 523                                                                         cr, disp);
 524                         }
 525                         else
 526                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 527
 528                         M_ALD(d, REG_PV, disp);
 529                         emit_store_dst(jd, iptr, d);
 530                         break;
 531
 532
 533                 /* load/store/copy/move operations ************************************/
 534
 535                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 536                 case ICMD_ALOAD:      /* s1 = local variable                          */
 537                 case ICMD_LLOAD:
 538                 case ICMD_FLOAD:
 539                 case ICMD_DLOAD:
 540                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 541                 case ICMD_LSTORE:
 542                 case ICMD_FSTORE:
 543                 case ICMD_DSTORE:
 544                 case ICMD_COPY:
 545                 case ICMD_MOVE:
 546
 547                         emit_copy(jd, iptr);
 548                         break;
 549
 550                 case ICMD_ASTORE:
 551
 552                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 553                                 emit_copy(jd, iptr);
 554                         break;
 555
 556
 557                 /* integer operations *************************************************/
 558
 559                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 560
 561                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 562                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 563                         M_NEG(s1, d);
 564                         emit_store_dst(jd, iptr, d);
 565                         break;
 566
 567                 case ICMD_LNEG:       /* ..., value  ==> ..., - value                 */
 568
 569                         s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
 570                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 571                         M_SUBFIC(GET_LOW_REG(s1), 0, GET_LOW_REG(d));
 572                         M_SUBFZE(GET_HIGH_REG(s1), GET_HIGH_REG(d));
 573                         emit_store_dst(jd, iptr, d);
 574                         break;
 575
 576                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 577
 578                         s1 = emit_load_s1(jd, iptr, REG_ITMP2);
 579                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 580                         M_INTMOVE(s1, GET_LOW_REG(d));
 581                         M_SRA_IMM(GET_LOW_REG(d), 31, GET_HIGH_REG(d));
 582                         emit_store_dst(jd, iptr, d);
 583                         break;
 584
 585                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 586
 587                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP2);
 588                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 589                         M_INTMOVE(s1, d);
 590                         emit_store_dst(jd, iptr, d);
 591                         break;
 592
 593                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 594
 595                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 596                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 597                         M_BSEXT(s1, d);
 598                         emit_store_dst(jd, iptr, d);
 599                         break;
 600
 601                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 602
 603                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 604                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 605                         M_CZEXT(s1, d);
 606                         emit_store_dst(jd, iptr, d);
 607                         break;
 608
 609                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 610
 611                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 612                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 613                         M_SSEXT(s1, d);
 614                         emit_store_dst(jd, iptr, d);
 615                         break;
 616
 617
 618                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 619
 620                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 621                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 622                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 623                         M_IADD(s1, s2, d);
 624                         emit_store_dst(jd, iptr, d);
 625                         break;
 626
 627                                       /* s1.localindex = variable, sx.val.i = constant*/
 628
 629                 case ICMD_IINC:
 630                 case ICMD_IADDCONST:
 631
 632                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 633                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 634                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 635                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 636                         } else {
 637                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 638                                 M_IADD(s1, REG_ITMP2, d);
 639                         }
 640                         /* XXX the old code for ICMD_IINC was as follows:
 641                         {
 642                                 u4 m = iptr->sx.val.i;
 643                                 if (m & 0x8000)
 644                                         m += 65536;
 645                                 if (m & 0xffff0000)
 646                                         M_ADDIS(s1, m >> 16, d);
 647                                 if (m & 0xffff)
 648                                         M_IADD_IMM(s1, m & 0xffff, d);
 649                         }
 650                         */
 651                         emit_store_dst(jd, iptr, d);
 652                         break;
 653
 654                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 655
 656                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 657                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 658                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 659                         M_ADDC(s1, s2, GET_LOW_REG(d));
 660                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 661                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 662                         M_ADDE(s1, s2, GET_HIGH_REG(d));
 663                         emit_store_dst(jd, iptr, d);
 664                         break;
 665
 666                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 667                                       /* sx.val.l = constant                          */
 668
 669                         s3 = iptr->sx.val.l & 0xffffffff;
 670                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 671                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 672                         if ((s3 >= -32768) && (s3 <= 32767))
 673                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 674                         else {
 675                                 ICONST(REG_ITMP2, s3);
 676                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 677                         }
 678                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 679                         s3 = iptr->sx.val.l >> 32;
 680                         if (s3 == -1)
 681                                 M_ADDME(s1, GET_HIGH_REG(d));
 682                         else if (s3 == 0)
 683                                 M_ADDZE(s1, GET_HIGH_REG(d));
 684                         else {
 685                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 686                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 687                         }
 688                         emit_store_dst(jd, iptr, d);
 689                         break;
 690
 691                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 692
 693                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 694                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 695                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 696                         M_ISUB(s1, s2, d);
 697                         emit_store_dst(jd, iptr, d);
 698                         break;
 699
 700                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 701                                       /* sx.val.i = constant                          */
 702
 703                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 704                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 705                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768))
 706                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 707                         else {
 708                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 709                                 M_ISUB(s1, REG_ITMP2, d);
 710                         }
 711                         emit_store_dst(jd, iptr, d);
 712                         break;
 713
 714                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 715
 716                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 717                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 718                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 719                         M_SUBC(s1, s2, GET_LOW_REG(d));
 720                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 721                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 722                         M_SUBE(s1, s2, GET_HIGH_REG(d));
 723                         emit_store_dst(jd, iptr, d);
 724                         break;
 725
 726                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 727                                       /* sx.val.l = constant                          */
 728
 729                         s3 = (-iptr->sx.val.l) & 0xffffffff;
 730                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 731                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 732                         if ((s3 >= -32768) && (s3 <= 32767)) {
 733                                 M_ADDIC(s1, s3, GET_LOW_REG(d));
 734                         } else {
 735                                 ICONST(REG_ITMP2, s3);
 736                                 M_ADDC(s1, REG_ITMP2, GET_LOW_REG(d));
 737                         }
 738                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 739                         s3 = (-iptr->sx.val.l) >> 32;
 740                         if (s3 == -1)
 741                                 M_ADDME(s1, GET_HIGH_REG(d));
 742                         else if (s3 == 0)
 743                                 M_ADDZE(s1, GET_HIGH_REG(d));
 744                         else {
 745                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 746                                 M_ADDE(s1, REG_ITMP3, GET_HIGH_REG(d));
 747                         }
 748                         emit_store_dst(jd, iptr, d);
 749                         break;
 750
 751                 case ICMD_IDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 752
 753                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 754                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 755                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 756                         emit_arithmetic_check(cd, iptr, s2);
 757                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 758                         M_CMP(REG_ITMP3, s1);
 759                         M_BNE(3 + (s1 != d));
 760                         M_CMPI(s2, -1);
 761                         M_BNE(1 + (s1 != d));
 762                         M_INTMOVE(s1, d);
 763                         M_BR(1);
 764                         M_IDIV(s1, s2, d);
 765                         emit_store_dst(jd, iptr, d);
 766                         break;
 767
 768                 case ICMD_IREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 769
 770                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 771                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 772                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 773                         emit_arithmetic_check(cd, iptr, s2);
 774                         M_LDAH(REG_ITMP3, REG_ZERO, 0x8000);
 775                         M_CMP(REG_ITMP3, s1);
 776                         M_BNE(4);
 777                         M_CMPI(s2, -1);
 778                         M_BNE(2);
 779                         M_CLR(d);
 780                         M_BR(3);
 781                         M_IDIV(s1, s2, REG_ITMP3);
 782                         M_IMUL(REG_ITMP3, s2, REG_ITMP3);
 783                         M_ISUB(s1, REG_ITMP3, d);
 784                         emit_store_dst(jd, iptr, d);
 785                         break;
 786
 787                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 788                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 789
 790                         s1 = emit_load_s1(jd, iptr, REG_A0_A1_PACKED);
 791                         s2 = emit_load_s2(jd, iptr, REG_A2_A3_PACKED);
 792
 793                         /* XXX TODO: only do this if arithmetic check is really done! */
 794                         M_OR_TST(GET_HIGH_REG(s2), GET_LOW_REG(s2), REG_ITMP3);
 795                         /* XXX could be optimized */
 796                         emit_arithmetic_check(cd, iptr, REG_ITMP3);
 797
 798                         bte = iptr->sx.s23.s3.bte;
 799                         disp = dseg_add_functionptr(cd, bte->fp);
 800                         M_ALD(REG_ITMP3, REG_PV, disp);
 801                         M_MTCTR(REG_ITMP3);
 802
 803                         M_LNGMOVE(s1, REG_A0_A1_PACKED);
 804                         M_LNGMOVE(s2, REG_A2_A3_PACKED);
 805
 806                         M_JSR;
 807
 808                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
 809                         M_LNGMOVE(REG_RESULT_PACKED, d);
 810                         emit_store_dst(jd, iptr, d);
 811                         break;
 812
 813                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 814
 815                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 816                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 817                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 818                         M_IMUL(s1, s2, d);
 819                         emit_store_dst(jd, iptr, d);
 820                         break;
 821
 822                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 823                                       /* sx.val.i = constant                          */
 824
 825                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 826                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 827                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 828                                 M_IMUL_IMM(s1, iptr->sx.val.i, d);
 829                         else {
 830                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 831                                 M_IMUL(s1, REG_ITMP3, d);
 832                         }
 833                         emit_store_dst(jd, iptr, d);
 834                         break;
 835
 836                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 837
 838                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 839                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 840                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 841                         M_ADDZE(d, d);
 842                         emit_store_dst(jd, iptr, d);
 843                         break;
 844
 845                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 846
 847                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 848                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 849                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 850                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 851                         M_SLL(s1, REG_ITMP3, d);
 852                         emit_store_dst(jd, iptr, d);
 853                         break;
 854
 855                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 856                                       /* sx.val.i = constant                          */
 857
 858                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 859                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 860                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 861                         emit_store_dst(jd, iptr, d);
 862                         break;
 863
 864                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 865
 866                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 867                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 868                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 869                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 870                         M_SRA(s1, REG_ITMP3, d);
 871                         emit_store_dst(jd, iptr, d);
 872                         break;
 873
 874                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 875                                       /* sx.val.i = constant                          */
 876
 877                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 878                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 879                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 880                         emit_store_dst(jd, iptr, d);
 881                         break;
 882
 883                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 884
 885                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 886                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 887                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 888                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 889                         M_SRL(s1, REG_ITMP2, d);
 890                         emit_store_dst(jd, iptr, d);
 891                         break;
 892
 893                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 894                                       /* sx.val.i = constant                          */
 895
 896                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 897                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 898                         if (iptr->sx.val.i & 0x1f)
 899                                 M_SRL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 900                         else {
 901                                 M_INTMOVE(s1, d);
 902                         }
 903                         emit_store_dst(jd, iptr, d);
 904                         break;
 905
 906                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 907
 908                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 909                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 910                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 911                         M_AND(s1, s2, d);
 912                         emit_store_dst(jd, iptr, d);
 913                         break;
 914
 915                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 916                                       /* sx.val.i = constant                          */
 917
 918                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 919                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 920                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 921                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 922                         /*
 923                         else if (iptr->sx.val.i == 0xffffff) {
 924                                 M_RLWINM(s1, 0, 8, 31, d);
 925                                 }
 926                         */
 927                         else {
 928                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 929                                 M_AND(s1, REG_ITMP3, d);
 930                         }
 931                         emit_store_dst(jd, iptr, d);
 932                         break;
 933
 934                 case ICMD_LAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 935
 936                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 937                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
 938                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 939                         M_AND(s1, s2, GET_LOW_REG(d));
 940                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 941                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
 942                         M_AND(s1, s2, GET_HIGH_REG(d));
 943                         emit_store_dst(jd, iptr, d);
 944                         break;
 945
 946                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 947                                       /* sx.val.l = constant                          */
 948
 949                         s3 = iptr->sx.val.l & 0xffffffff;
 950                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 951                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 952                         if ((s3 >= 0) && (s3 <= 65535))
 953                                 M_AND_IMM(s1, s3, GET_LOW_REG(d));
 954                         else {
 955                                 ICONST(REG_ITMP3, s3);
 956                                 M_AND(s1, REG_ITMP3, GET_LOW_REG(d));
 957                         }
 958                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
 959                         s3 = iptr->sx.val.l >> 32;
 960                         if ((s3 >= 0) && (s3 <= 65535))
 961                                 M_AND_IMM(s1, s3, GET_HIGH_REG(d));
 962                         else {
 963                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
 964                                 M_AND(s1, REG_ITMP3, GET_HIGH_REG(d));
 965                         }
 966                         emit_store_dst(jd, iptr, d);
 967                         break;
 968
 969                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 970                                       /* sx.val.i = constant                          */
 971
 972                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 973                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 974                         M_MOV(s1, REG_ITMP2);
 975                         M_CMPI(s1, 0);
 976                         M_BGE(1 + 2*(iptr->sx.val.i >= 32768));
 977                         if (iptr->sx.val.i >= 32768) {
 978                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 979                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 980                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 981                         }
 982                         else {
 983                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 984                         }
 985                         {
 986                                 int b=0, m = iptr->sx.val.i;
 987                                 while (m >>= 1)
 988                                         ++b;
 989                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 990                         }
 991                         M_ISUB(s1, REG_ITMP2, d);
 992                         emit_store_dst(jd, iptr, d);
 993                         break;
 994
 995                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 996
 997                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 998                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 999                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1000                         M_OR(s1, s2, d);
1001                         emit_store_dst(jd, iptr, d);
1002                         break;
1003
1004                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
1005                                       /* sx.val.i = constant                          */
1006
1007                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1008                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1009                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1010                                 M_OR_IMM(s1, iptr->sx.val.i, d);
1011                         else {
1012                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1013                                 M_OR(s1, REG_ITMP3, d);
1014                         }
1015                         emit_store_dst(jd, iptr, d);
1016                         break;
1017
1018                 case ICMD_LOR:       /* ..., val1, val2  ==> ..., val1 | val2        */
1019
1020                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1021                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1022                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1023                         M_OR(s1, s2, GET_LOW_REG(d));
1024                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1025                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1026                         M_OR(s1, s2, GET_HIGH_REG(d));
1027                         emit_store_dst(jd, iptr, d);
1028                         break;
1029
1030                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
1031                                       /* sx.val.l = constant                          */
1032
1033                         s3 = iptr->sx.val.l & 0xffffffff;
1034                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1035                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1036                         if ((s3 >= 0) && (s3 <= 65535))
1037                                 M_OR_IMM(s1, s3, GET_LOW_REG(d));
1038                         else {
1039                                 ICONST(REG_ITMP3, s3);
1040                                 M_OR(s1, REG_ITMP3, GET_LOW_REG(d));
1041                         }
1042                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1043                         s3 = iptr->sx.val.l >> 32;
1044                         if ((s3 >= 0) && (s3 <= 65535))
1045                                 M_OR_IMM(s1, s3, GET_HIGH_REG(d));
1046                         else {
1047                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1048                                 M_OR(s1, REG_ITMP3, GET_HIGH_REG(d));
1049                         }
1050                         emit_store_dst(jd, iptr, d);
1051                         break;
1052
1053                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1054
1055                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1056                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1057                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1058                         M_XOR(s1, s2, d);
1059                         emit_store_dst(jd, iptr, d);
1060                         break;
1061
1062                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1063                                       /* sx.val.i = constant                          */
1064
1065                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1066                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1067                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1068                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1069                         else {
1070                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1071                                 M_XOR(s1, REG_ITMP3, d);
1072                         }
1073                         emit_store_dst(jd, iptr, d);
1074                         break;
1075
1076                 case ICMD_LXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1077
1078                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1079                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1080                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1081                         M_XOR(s1, s2, GET_LOW_REG(d));
1082                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1083                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);/* don't use REG_ITMP2*/
1084                         M_XOR(s1, s2, GET_HIGH_REG(d));
1085                         emit_store_dst(jd, iptr, d);
1086                         break;
1087
1088                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1089                                       /* sx.val.l = constant                          */
1090
1091                         s3 = iptr->sx.val.l & 0xffffffff;
1092                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1093                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1094                         if ((s3 >= 0) && (s3 <= 65535))
1095                                 M_XOR_IMM(s1, s3, GET_LOW_REG(d));
1096                         else {
1097                                 ICONST(REG_ITMP3, s3);
1098                                 M_XOR(s1, REG_ITMP3, GET_LOW_REG(d));
1099                         }
1100                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1101                         s3 = iptr->sx.val.l >> 32;
1102                         if ((s3 >= 0) && (s3 <= 65535))
1103                                 M_XOR_IMM(s1, s3, GET_HIGH_REG(d));
1104                         else {
1105                                 ICONST(REG_ITMP3, s3);                 /* don't use REG_ITMP2 */
1106                                 M_XOR(s1, REG_ITMP3, GET_HIGH_REG(d));
1107                         }
1108                         emit_store_dst(jd, iptr, d);
1109                         break;
1110
1111                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1112
1113                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
1114                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1115                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1116                         vm_abort("codegen: implement ICMD_LCMP!");
1117                         emit_store_dst(jd, iptr, d);
1118                         break;
1119
1120
1121                 /* floating operations ************************************************/
1122
1123                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1124
1125                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1126                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1127                         M_FMOVN(s1, d);
1128                         emit_store_dst(jd, iptr, d);
1129                         break;
1130
1131                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1132
1133                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1134                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1135                         M_FMOVN(s1, d);
1136                         emit_store_dst(jd, iptr, d);
1137                         break;
1138
1139                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1140
1141                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1142                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1143                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1144                         M_FADD(s1, s2, d);
1145                         emit_store_dst(jd, iptr, d);
1146                         break;
1147
1148                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1149
1150                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1151                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1152                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1153                         M_DADD(s1, s2, d);
1154                         emit_store_dst(jd, iptr, d);
1155                         break;
1156
1157                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1158
1159                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1160                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1161                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1162                         M_FSUB(s1, s2, d);
1163                         emit_store_dst(jd, iptr, d);
1164                         break;
1165
1166                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1167
1168                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1169                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1170                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1171                         M_DSUB(s1, s2, d);
1172                         emit_store_dst(jd, iptr, d);
1173                         break;
1174
1175                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1176
1177                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1178                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1179                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1180                         M_FMUL(s1, s2, d);
1181                         emit_store_dst(jd, iptr, d);
1182                         break;
1183
1184                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1185
1186                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1187                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1188                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1189                         M_DMUL(s1, s2, d);
1190                         emit_store_dst(jd, iptr, d);
1191                         break;
1192
1193                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1194
1195                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1196                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1197                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1198                         M_FDIV(s1, s2, d);
1199                         emit_store_dst(jd, iptr, d);
1200                         break;
1201
1202                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1203
1204                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1205                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1206                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1207                         M_DDIV(s1, s2, d);
1208                         emit_store_dst(jd, iptr, d);
1209                         break;
1210
1211                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1212                 case ICMD_D2I:
1213
1214                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1215                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1216                         M_CLR(d);
1217                         disp = dseg_add_float(cd, 0.0);
1218                         M_FLD(REG_FTMP2, REG_PV, disp);
1219                         M_FCMPU(s1, REG_FTMP2);
1220                         M_BNAN(4);
1221                         disp = dseg_add_unique_s4(cd, 0);
1222                         M_CVTDL_C(s1, REG_FTMP1);
1223                         M_LDA(REG_ITMP1, REG_PV, disp);
1224                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1225                         M_ILD(d, REG_PV, disp);
1226                         emit_store_dst(jd, iptr, d);
1227                         break;
1228
1229                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1230
1231                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1232                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1233                         M_FLTMOVE(s1, d);
1234                         emit_store_dst(jd, iptr, d);
1235                         break;
1236
1237                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1238
1239                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1240                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1241                         M_CVTDF(s1, d);
1242                         emit_store_dst(jd, iptr, d);
1243                         break;
1244
1245                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1246                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1247
1248
1249                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1250                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1251                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1252                         M_FCMPU(s2, s1);
1253                         M_IADD_IMM(REG_ZERO, -1, d);
1254                         M_BNAN(4);
1255                         M_BGT(3);
1256                         M_IADD_IMM(REG_ZERO, 0, d);
1257                         M_BGE(1);
1258                         M_IADD_IMM(REG_ZERO, 1, d);
1259                         emit_store_dst(jd, iptr, d);
1260                         break;
1261
1262                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1263                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1264
1265                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1266                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1267                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1268                         M_FCMPU(s1, s2);
1269                         M_IADD_IMM(REG_ZERO, 1, d);
1270                         M_BNAN(4);
1271                         M_BGT(3);
1272                         M_IADD_IMM(REG_ZERO, 0, d);
1273                         M_BGE(1);
1274                         M_IADD_IMM(REG_ZERO, -1, d);
1275                         emit_store_dst(jd, iptr, d);
1276                         break;
1277
1278                 case ICMD_IF_FCMPEQ:    /* ..., value, value ==> ...                  */
1279                 case ICMD_IF_DCMPEQ:
1280
1281                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1282                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1283                         M_FCMPU(s1, s2);
1284                         M_BNAN(1);
1285                         emit_beq(cd, iptr->dst.block);
1286                         break;
1287
1288                 case ICMD_IF_FCMPNE:    /* ..., value, value ==> ...                  */
1289                 case ICMD_IF_DCMPNE:
1290
1291                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1292                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1293                         M_FCMPU(s1, s2);
1294                         emit_bnan(cd, iptr->dst.block);
1295                         emit_bne(cd, iptr->dst.block);
1296                         break;
1297
1298
1299                 case ICMD_IF_FCMPL_LT:  /* ..., value, value ==> ...                  */
1300                 case ICMD_IF_DCMPL_LT:
1301
1302                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1303                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1304                         M_FCMPU(s1, s2);
1305                         emit_bnan(cd, iptr->dst.block);
1306                         emit_blt(cd, iptr->dst.block);
1307                         break;
1308
1309                 case ICMD_IF_FCMPL_GT:  /* ..., value, value ==> ...                  */
1310                 case ICMD_IF_DCMPL_GT:
1311
1312                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1313                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1314                         M_FCMPU(s1, s2);
1315                         M_BNAN(1);
1316                         emit_bgt(cd, iptr->dst.block);
1317                         break;
1318
1319                 case ICMD_IF_FCMPL_LE:  /* ..., value, value ==> ...                  */
1320                 case ICMD_IF_DCMPL_LE:
1321
1322                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1323                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1324                         M_FCMPU(s1, s2);
1325                         emit_bnan(cd, iptr->dst.block);
1326                         emit_ble(cd, iptr->dst.block);
1327                         break;
1328
1329                 case ICMD_IF_FCMPL_GE:  /* ..., value, value ==> ...                  */
1330                 case ICMD_IF_DCMPL_GE:
1331
1332                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1333                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1334                         M_FCMPU(s1, s2);
1335                         M_BNAN(1);
1336                         emit_bge(cd, iptr->dst.block);
1337                         break;
1338
1339                 case ICMD_IF_FCMPG_LT:  /* ..., value, value ==> ...                  */
1340                 case ICMD_IF_DCMPG_LT:
1341
1342                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1343                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1344                         M_FCMPU(s1, s2);
1345                         M_BNAN(1);
1346                         emit_blt(cd, iptr->dst.block);
1347                         break;
1348
1349                 case ICMD_IF_FCMPG_GT:  /* ..., value, value ==> ...                  */
1350                 case ICMD_IF_DCMPG_GT:
1351
1352                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1353                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1354                         M_FCMPU(s1, s2);
1355                         emit_bnan(cd, iptr->dst.block);
1356                         emit_bgt(cd, iptr->dst.block);
1357                         break;
1358
1359                 case ICMD_IF_FCMPG_LE:  /* ..., value, value ==> ...                  */
1360                 case ICMD_IF_DCMPG_LE:
1361
1362                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1363                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1364                         M_FCMPU(s1, s2);
1365                         M_BNAN(1);
1366                         emit_ble(cd, iptr->dst.block);
1367                         break;
1368
1369                 case ICMD_IF_FCMPG_GE:  /* ..., value, value ==> ...                  */
1370                 case ICMD_IF_DCMPG_GE:
1371
1372                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1373                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1374                         M_FCMPU(s1, s2);
1375                         emit_bnan(cd, iptr->dst.block);
1376                         emit_bge(cd, iptr->dst.block);
1377                         break;
1378
1379
1380                 /* memory operations **************************************************/
1381
1382                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1383
1384                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1385                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1386                         /* implicit null-pointer check */
1387                         M_ILD(d, s1, OFFSET(java_array_t, size));
1388                         emit_store_dst(jd, iptr, d);
1389                         break;
1390
1391                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1392
1393                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1394                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1395                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1396                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1397                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1398                         /* implicit null-pointer check */
1399                         M_LBZX(d, s1, REG_ITMP2);
1400                         M_BSEXT(d, d);
1401                         emit_store_dst(jd, iptr, d);
1402                         break;
1403
1404                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1405
1406                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1407                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1408                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1409                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1410                         M_SLL_IMM(s2, 1, REG_ITMP2);
1411                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1412                         /* implicit null-pointer check */
1413                         M_LHZX(d, s1, REG_ITMP2);
1414                         emit_store_dst(jd, iptr, d);
1415                         break;
1416
1417                 case ICMD_SALOAD:     /* ..., 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_SLL_IMM(s2, 1, REG_ITMP2);
1424                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1425                         /* implicit null-pointer check */
1426                         M_LHAX(d, s1, REG_ITMP2);
1427                         emit_store_dst(jd, iptr, d);
1428                         break;
1429
1430                 case ICMD_IALOAD:     /* ..., 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, 2, REG_ITMP2);
1437                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1438                         /* implicit null-pointer check */
1439                         M_LWZX(d, s1, REG_ITMP2);
1440                         emit_store_dst(jd, iptr, d);
1441                         break;
1442
1443                 case ICMD_LALOAD:     /* ..., 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_ITMP12_PACKED);
1448                         /* implicit null-pointer check */
1449                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1450                         M_SLL_IMM(s2, 3, REG_ITMP2);
1451                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1452                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray_t, data[0]));
1453                         emit_store_dst(jd, iptr, d);
1454                         break;
1455
1456                 case ICMD_FALOAD:     /* ..., 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_FTMP1);
1461                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1462                         M_SLL_IMM(s2, 2, REG_ITMP2);
1463                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1464                         /* implicit null-pointer check */
1465                         M_LFSX(d, s1, REG_ITMP2);
1466                         emit_store_dst(jd, iptr, d);
1467                         break;
1468
1469                 case ICMD_DALOAD:     /* ..., 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_FTMP1);
1474                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1475                         M_SLL_IMM(s2, 3, REG_ITMP2);
1476                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1477                         /* implicit null-pointer check */
1478                         M_LFDX(d, s1, REG_ITMP2);
1479                         emit_store_dst(jd, iptr, d);
1480                         break;
1481
1482                 case ICMD_AALOAD:     /* ..., 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_ITMP2);
1487                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1488                         M_SLL_IMM(s2, 2, REG_ITMP2);
1489                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1490                         /* implicit null-pointer check */
1491                         M_LWZX(d, s1, REG_ITMP2);
1492                         emit_store_dst(jd, iptr, d);
1493                         break;
1494
1495
1496                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1497
1498                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1499                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1500                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1501                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1502                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1503                         /* implicit null-pointer check */
1504                         M_STBX(s3, s1, REG_ITMP2);
1505                         break;
1506
1507                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1508
1509                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1510                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1511                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1512                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1513                         M_SLL_IMM(s2, 1, REG_ITMP2);
1514                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1515                         /* implicit null-pointer check */
1516                         M_STHX(s3, s1, REG_ITMP2);
1517                         break;
1518
1519                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1520
1521                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1522                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1523                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1524                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1525                         M_SLL_IMM(s2, 1, REG_ITMP2);
1526                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1527                         /* implicit null-pointer check */
1528                         M_STHX(s3, s1, REG_ITMP2);
1529                         break;
1530
1531                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1532
1533                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1534                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1535                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1536                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1537                         M_SLL_IMM(s2, 2, REG_ITMP2);
1538                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1539                         /* implicit null-pointer check */
1540                         M_STWX(s3, s1, REG_ITMP2);
1541                         break;
1542
1543                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1544
1545                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1546                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1547                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1548                         s3 = emit_load_s3_high(jd, iptr, REG_ITMP3);
1549                         M_SLL_IMM(s2, 3, REG_ITMP2);
1550                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray_t, data[0]), REG_ITMP2);
1551                         /* implicit null-pointer check */
1552                         M_STWX(s3, s1, REG_ITMP2);
1553                         M_IADD_IMM(REG_ITMP2, 4, REG_ITMP2);
1554                         s3 = emit_load_s3_low(jd, iptr, REG_ITMP3);
1555                         M_STWX(s3, s1, REG_ITMP2);
1556                         break;
1557
1558                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1559
1560                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1561                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1562                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1563                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1564                         M_SLL_IMM(s2, 2, REG_ITMP2);
1565                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1566                         /* implicit null-pointer check */
1567                         M_STFSX(s3, s1, REG_ITMP2);
1568                         break;
1569
1570                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1571
1572                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1573                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1574                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1575                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1576                         M_SLL_IMM(s2, 3, REG_ITMP2);
1577                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1578                         /* implicit null-pointer check */
1579                         M_STFDX(s3, s1, REG_ITMP2);
1580                         break;
1581
1582                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1583
1584                         s1 = emit_load_s1(jd, iptr, REG_A0);
1585                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1586                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1587                         s3 = emit_load_s3(jd, iptr, REG_A1);
1588
1589                         /* XXX what if array is NULL */
1590                         disp = dseg_add_functionptr(cd, BUILTIN_canstore);
1591                         M_ALD(REG_ITMP3, REG_PV, disp);
1592                         M_MTCTR(REG_ITMP3);
1593
1594                         M_INTMOVE(s1, REG_A0);
1595                         M_INTMOVE(s3, REG_A1);
1596
1597                         M_JSR;
1598                         emit_exception_check(cd, iptr);
1599
1600                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1601                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1602                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1603                         M_SLL_IMM(s2, 2, REG_ITMP2);
1604                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1605                         /* implicit null-pointer check */
1606                         M_STWX(s3, s1, REG_ITMP2);
1607                         break;
1608
1609
1610                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1611
1612                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1613                                 uf        = iptr->sx.s23.s3.uf;
1614                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1615                                 disp      = dseg_add_unique_address(cd, uf);
1616
1617                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
1618                         }
1619                         else {
1620                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1621                                 fieldtype = fi->type;
1622                                 disp      = dseg_add_address(cd, fi->value);
1623
1624                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class))
1625                                         patcher_add_patch_ref(jd, PATCHER_initialize_class,
1626                                                                                 fi->class, disp);
1627                         }
1628
1629                         M_ALD(REG_ITMP1, REG_PV, disp);
1630                         switch (fieldtype) {
1631                         case TYPE_INT:
1632                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1633                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1634                                 break;
1635                         case TYPE_LNG:
1636                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1637                                 M_ILD_INTERN(GET_LOW_REG(d), REG_ITMP1, 4);/* keep this order */
1638                                 M_ILD_INTERN(GET_HIGH_REG(d), REG_ITMP1, 0);/*keep this order */
1639                                 break;
1640                         case TYPE_ADR:
1641                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1642                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1643                                 break;
1644                         case TYPE_FLT:
1645                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1646                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1647                                 break;
1648                         case TYPE_DBL:
1649                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1650                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1651                                 break;
1652                         }
1653                         emit_store_dst(jd, iptr, d);
1654                         break;
1655
1656                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1657
1658                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1659                                 uf        = iptr->sx.s23.s3.uf;
1660                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1661                                 disp      = dseg_add_unique_address(cd, uf);
1662
1663                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
1664                         }
1665                         else {
1666                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1667                                 fieldtype = fi->type;
1668                                 disp      = dseg_add_address(cd, fi->value);
1669
1670                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class))
1671                                         patcher_add_patch_ref(jd, PATCHER_initialize_class,
1672                                                                                 fi->class, disp);
1673                         }
1674
1675                         M_ALD(REG_ITMP1, REG_PV, disp);
1676                         switch (fieldtype) {
1677                         case TYPE_INT:
1678                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1679                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1680                                 break;
1681                         case TYPE_LNG:
1682                                 s1 = emit_load_s1(jd, iptr, REG_ITMP23_PACKED);
1683                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1684                                 break;
1685                         case TYPE_ADR:
1686                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1687                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1688                                 break;
1689                         case TYPE_FLT:
1690                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1691                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1692                                 break;
1693                         case TYPE_DBL:
1694                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1695                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1696                                 break;
1697                         }
1698                         break;
1699
1700
1701                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1702
1703                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1704
1705                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1706                                 uf        = iptr->sx.s23.s3.uf;
1707                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1708                                 disp      = 0;
1709
1710                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1711                         }
1712                         else {
1713                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1714                                 fieldtype = fi->type;
1715                                 disp      = fi->offset;
1716                         }
1717
1718                         /* implicit null-pointer check */
1719                         switch (fieldtype) {
1720                         case TYPE_INT:
1721                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1722                                 M_ILD(d, s1, disp);
1723                                 break;
1724                         case TYPE_LNG:
1725                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1726                                 if (GET_HIGH_REG(d) == s1) {
1727                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1728                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1729                                 }
1730                                 else {
1731                                         M_ILD(GET_HIGH_REG(d), s1, disp);
1732                                         M_ILD(GET_LOW_REG(d), s1, disp + 4);
1733                                 }
1734                                 break;
1735                         case TYPE_ADR:
1736                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1737                                 M_ALD(d, s1, disp);
1738                                 break;
1739                         case TYPE_FLT:
1740                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1741                                 M_FLD(d, s1, disp);
1742                                 break;
1743                         case TYPE_DBL:
1744                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1745                                 M_DLD(d, s1, disp);
1746                                 break;
1747                         }
1748                         emit_store_dst(jd, iptr, d);
1749                         break;
1750
1751                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1752
1753                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1754
1755                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1756                                 uf        = iptr->sx.s23.s3.uf;
1757                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1758                                 disp      = 0;
1759                         }
1760                         else {
1761                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1762                                 fieldtype = fi->type;
1763                                 disp      = fi->offset;
1764                         }
1765
1766                         if (IS_INT_LNG_TYPE(fieldtype)) {
1767                                 if (IS_2_WORD_TYPE(fieldtype))
1768                                         s2 = emit_load_s2(jd, iptr, REG_ITMP23_PACKED);
1769                                 else
1770                                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1771                         }
1772                         else
1773                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1774
1775                         if (INSTRUCTION_IS_UNRESOLVED(iptr))
1776                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1777
1778                         /* implicit null-pointer check */
1779                         switch (fieldtype) {
1780                         case TYPE_INT:
1781                                 M_IST(s2, s1, disp);
1782                                 break;
1783                         case TYPE_LNG:
1784                                 M_IST(GET_LOW_REG(s2), s1, disp + 4);      /* keep this order */
1785                                 M_IST(GET_HIGH_REG(s2), s1, disp);         /* keep this order */
1786                                 break;
1787                         case TYPE_ADR:
1788                                 M_AST(s2, s1, disp);
1789                                 break;
1790                         case TYPE_FLT:
1791                                 M_FST(s2, s1, disp);
1792                                 break;
1793                         case TYPE_DBL:
1794                                 M_DST(s2, s1, disp);
1795                                 break;
1796                         }
1797                         break;
1798
1799
1800                 /* branch operations **************************************************/
1801
1802                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1803
1804                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1805                         M_INTMOVE(s1, REG_ITMP1_XPTR);
1806
1807 #ifdef ENABLE_VERIFIER
1808                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1809                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
1810
1811                                 patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
1812                         }
1813 #endif /* ENABLE_VERIFIER */
1814
1815                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1816                         M_ALD(REG_ITMP2, REG_PV, disp);
1817                         M_MTCTR(REG_ITMP2);
1818
1819                         if (jd->isleafmethod)
1820                                 M_MFLR(REG_ITMP3);                          /* save LR        */
1821
1822                         M_BL(0);                                        /* get current PC */
1823                         M_MFLR(REG_ITMP2_XPC);
1824
1825                         if (jd->isleafmethod)
1826                                 M_MTLR(REG_ITMP3);                          /* restore LR     */
1827
1828                         M_RTS;                                          /* jump to CTR    */
1829                         ALIGNCODENOP;
1830                         break;
1831
1832                 case ICMD_GOTO:         /* ... ==> ...                                */
1833                 case ICMD_RET:          /* ... ==> ...                                */
1834
1835                         emit_br(cd, iptr->dst.block);
1836                         ALIGNCODENOP;
1837                         break;
1838
1839                 case ICMD_JSR:          /* ... ==> ...                                */
1840
1841                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1842                         ALIGNCODENOP;
1843                         break;
1844
1845                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1846                 case ICMD_IFNONNULL:
1847
1848                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1849                         M_TST(s1);
1850                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFNULL, BRANCH_OPT_NONE);
1851                         break;
1852
1853                 case ICMD_IFLT:
1854                 case ICMD_IFLE:
1855                 case ICMD_IFNE:
1856                 case ICMD_IFGT:
1857                 case ICMD_IFGE:
1858                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1859
1860                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1861                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1862                                 M_CMPI(s1, iptr->sx.val.i);
1863                         else {
1864                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1865                                 M_CMP(s1, REG_ITMP2);
1866                         }
1867                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1868                         break;
1869
1870
1871                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1872
1873                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1874                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1875                         if (iptr->sx.val.l == 0) {
1876                                 M_OR_TST(s1, s2, REG_ITMP3);
1877                         }
1878                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1879                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1880                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1881                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1882                         }
1883                         else {
1884                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1885                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1886                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1887                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1888                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1889                         }
1890                         emit_beq(cd, iptr->dst.block);
1891                         break;
1892
1893                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1894
1895                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1896                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1897                         if (iptr->sx.val.l == 0) {
1898                                 /* if high word is less than zero, the whole long is too */
1899                                 M_CMPI(s2, 0);
1900                                 emit_blt(cd, iptr->dst.block);
1901                         }
1902                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1903                                 M_CMPI(s2, 0);
1904                                 emit_blt(cd, iptr->dst.block);
1905                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1906                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1907                                 emit_blt(cd, iptr->dst.block);
1908                                 emit_label(cd, BRANCH_LABEL_1);
1909                         }
1910                         else {
1911                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1912                                 M_CMP(s2, REG_ITMP3);
1913                                 emit_blt(cd, iptr->dst.block);
1914                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1915                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1916                                 M_CMPU(s1, REG_ITMP3);
1917                                 emit_blt(cd, iptr->dst.block);
1918                                 emit_label(cd, BRANCH_LABEL_1);
1919                         }
1920                         break;
1921
1922                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1923
1924                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1925                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1926 /*                      if (iptr->sx.val.l == 0) { */
1927 /*                              M_OR(s1, s2, REG_ITMP3); */
1928 /*                              M_CMPI(REG_ITMP3, 0); */
1929
1930 /*                      } else  */
1931                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1932                                 M_CMPI(s2, 0);
1933                                 emit_blt(cd, iptr->dst.block);
1934                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1935                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1936                         }
1937                         else {
1938                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1939                                 M_CMP(s2, REG_ITMP3);
1940                                 emit_blt(cd, iptr->dst.block);
1941                                 emit_label_bgt(cd, BRANCH_LABEL_1);
1942                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1943                                 M_CMPU(s1, REG_ITMP3);
1944                         }
1945                         emit_ble(cd, iptr->dst.block);
1946                         emit_label(cd, BRANCH_LABEL_1);
1947                         break;
1948
1949                 case ICMD_IF_LNE:       /* ..., value ==> ...                         */
1950
1951                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1952                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1953                         if (iptr->sx.val.l == 0) {
1954                                 M_OR_TST(s1, s2, REG_ITMP3);
1955                         }
1956                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1957                                 M_XOR_IMM(s2, 0, REG_ITMP2);
1958                                 M_XOR_IMM(s1, iptr->sx.val.l & 0xffff, REG_ITMP1);
1959                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1960                         }
1961                         else {
1962                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1963                                 M_XOR(s1, REG_ITMP3, REG_ITMP1);
1964                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1965                                 M_XOR(s2, REG_ITMP3, REG_ITMP2);
1966                                 M_OR_TST(REG_ITMP1, REG_ITMP2, REG_ITMP3);
1967                         }
1968                         emit_bne(cd, iptr->dst.block);
1969                         break;
1970
1971                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1972
1973                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1974                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
1975 /*                      if (iptr->sx.val.l == 0) { */
1976 /*                              M_OR(s1, s2, REG_ITMP3); */
1977 /*                              M_CMPI(REG_ITMP3, 0); */
1978
1979 /*                      } else  */
1980                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
1981                                 M_CMPI(s2, 0);
1982                                 emit_bgt(cd, iptr->dst.block);
1983                                 emit_label_blt(cd, BRANCH_LABEL_1);
1984                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
1985                         }
1986                         else {
1987                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1988                                 M_CMP(s2, REG_ITMP3);
1989                                 emit_bgt(cd, iptr->dst.block);
1990                                 emit_label_blt(cd, BRANCH_LABEL_1);
1991                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1992                                 M_CMPU(s1, REG_ITMP3);
1993                         }
1994                         emit_bgt(cd, iptr->dst.block);
1995                         emit_label(cd, BRANCH_LABEL_1);
1996                         break;
1997
1998                 case ICMD_IF_LGE:       /* ..., value ==> ...                         */
1999
2000                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2001                         s2 = emit_load_s1_high(jd, iptr, REG_ITMP2);
2002                         if (iptr->sx.val.l == 0) {
2003                                 /* if high word is greater equal zero, the whole long is too */
2004                                 M_CMPI(s2, 0);
2005                                 emit_bge(cd, iptr->dst.block);
2006                         }
2007                         else if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 0xffff)) {
2008                                 M_CMPI(s2, 0);
2009                                 emit_bgt(cd, iptr->dst.block);
2010                                 emit_label_blt(cd, BRANCH_LABEL_1);
2011                                 M_CMPUI(s1, iptr->sx.val.l & 0xffff);
2012                                 emit_bge(cd, iptr->dst.block);
2013                                 emit_label(cd, BRANCH_LABEL_1);
2014                         }
2015                         else {
2016                                 ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
2017                                 M_CMP(s2, REG_ITMP3);
2018                                 emit_bgt(cd, iptr->dst.block);
2019                                 emit_label_blt(cd, BRANCH_LABEL_1);
2020                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
2021                                 M_CMPU(s1, REG_ITMP3);
2022                                 emit_bge(cd, iptr->dst.block);
2023                                 emit_label(cd, BRANCH_LABEL_1);
2024                         }
2025                         break;
2026
2027                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
2028                 case ICMD_IF_ICMPNE:
2029                 case ICMD_IF_ICMPLT:
2030                 case ICMD_IF_ICMPGT:
2031                 case ICMD_IF_ICMPLE:
2032                 case ICMD_IF_ICMPGE:
2033
2034                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2035                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
2036                         M_CMP(s1, s2);
2037                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ICMPEQ, BRANCH_OPT_NONE);
2038                         break;
2039
2040                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
2041                 case ICMD_IF_ACMPNE:
2042
2043                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2044                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
2045                         M_CMP(s1, s2);
2046                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ACMPEQ, BRANCH_OPT_NONE);
2047                         break;
2048
2049                 case ICMD_IF_LCMPEQ:    /* ..., value, value ==> ...                  */
2050
2051                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2052                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2053                         M_CMP(s1, s2);
2054                         emit_label_bne(cd, BRANCH_LABEL_1);
2055                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2056                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2057                         M_CMP(s1, s2);
2058                         emit_beq(cd, iptr->dst.block);
2059                         emit_label(cd, BRANCH_LABEL_1);
2060                         break;
2061
2062                 case ICMD_IF_LCMPNE:    /* ..., value, value ==> ...                  */
2063
2064                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2065                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2066                         M_CMP(s1, s2);
2067                         emit_bne(cd, iptr->dst.block);
2068                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2069                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2070                         M_CMP(s1, s2);
2071                         emit_bne(cd, iptr->dst.block);
2072                         break;
2073
2074                 case ICMD_IF_LCMPLT:    /* ..., value, value ==> ...                  */
2075
2076                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2077                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2078                         M_CMP(s1, s2);
2079                         emit_blt(cd, iptr->dst.block);
2080                         emit_label_bgt(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_CMPU(s1, s2);
2084                         emit_blt(cd, iptr->dst.block);
2085                         emit_label(cd, BRANCH_LABEL_1);
2086                         break;
2087
2088                 case ICMD_IF_LCMPGT:    /* ..., 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_bgt(cd, iptr->dst.block);
2094                         emit_label_blt(cd, BRANCH_LABEL_1);
2095                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2096                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2097                         M_CMPU(s1, s2);
2098                         emit_bgt(cd, iptr->dst.block);
2099                         emit_label(cd, BRANCH_LABEL_1);
2100                         break;
2101
2102                 case ICMD_IF_LCMPLE:    /* ..., value, value ==> ...                  */
2103
2104                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2105                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2106                         M_CMP(s1, s2);
2107                         emit_blt(cd, iptr->dst.block);
2108                         emit_label_bgt(cd, BRANCH_LABEL_1);
2109                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2110                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2111                         M_CMPU(s1, s2);
2112                         emit_ble(cd, iptr->dst.block);
2113                         emit_label(cd, BRANCH_LABEL_1);
2114                         break;
2115
2116                 case ICMD_IF_LCMPGE:    /* ..., value, value ==> ...                  */
2117
2118                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
2119                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
2120                         M_CMP(s1, s2);
2121                         emit_bgt(cd, iptr->dst.block);
2122                         emit_label_blt(cd, BRANCH_LABEL_1);
2123                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
2124                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
2125                         M_CMPU(s1, s2);
2126                         emit_bge(cd, iptr->dst.block);
2127                         emit_label(cd, BRANCH_LABEL_1);
2128                         break;
2129
2130                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
2131
2132                         REPLACEMENT_POINT_RETURN(cd, iptr);
2133                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2134                         M_INTMOVE(s1, REG_RESULT);
2135                         goto nowperformreturn;
2136
2137                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
2138
2139                         REPLACEMENT_POINT_RETURN(cd, iptr);
2140                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
2141                         M_INTMOVE(s1, REG_RESULT);
2142
2143 #ifdef ENABLE_VERIFIER
2144                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2145                                 unresolved_class *uc = iptr->sx.s23.s2.uc;
2146
2147                                 patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
2148                         }
2149 #endif /* ENABLE_VERIFIER */
2150                         goto nowperformreturn;
2151
2152                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
2153
2154                         REPLACEMENT_POINT_RETURN(cd, iptr);
2155                         s1 = emit_load_s1(jd, iptr, REG_RESULT_PACKED);
2156                         M_LNGMOVE(s1, REG_RESULT_PACKED);
2157                         goto nowperformreturn;
2158
2159                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
2160                 case ICMD_DRETURN:
2161
2162                         REPLACEMENT_POINT_RETURN(cd, iptr);
2163                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
2164                         M_FLTMOVE(s1, REG_FRESULT);
2165                         goto nowperformreturn;
2166
2167                 case ICMD_RETURN:      /* ...  ==> ...                                */
2168
2169                         REPLACEMENT_POINT_RETURN(cd, iptr);
2170
2171 nowperformreturn:
2172                         {
2173                         s4 i, p;
2174
2175                         p = cd->stackframesize;
2176
2177                         /* call trace function */
2178
2179                         emit_verbosecall_exit(jd);
2180
2181 #if defined(ENABLE_THREADS)
2182                         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
2183                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
2184                                 M_ALD(REG_ITMP3, REG_PV, disp);
2185                                 M_MTCTR(REG_ITMP3);
2186
2187                                 /* we need to save the proper return value */
2188
2189                                 switch (iptr->opc) {
2190                                 case ICMD_LRETURN:
2191                                         M_IST(REG_RESULT2, REG_SP, rd->memuse * 8 + 8);
2192                                         /* fall through */
2193                                 case ICMD_IRETURN:
2194                                 case ICMD_ARETURN:
2195                                         M_IST(REG_RESULT , REG_SP, rd->memuse * 8 + 4);
2196                                         break;
2197                                 case ICMD_FRETURN:
2198                                 case ICMD_DRETURN:
2199                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 4);
2200                                         break;
2201                                 }
2202
2203                                 M_ALD(REG_A0, REG_SP, rd->memuse * 8);
2204                                 M_JSR;
2205
2206                                 /* and now restore the proper return value */
2207
2208                                 switch (iptr->opc) {
2209                                 case ICMD_LRETURN:
2210                                         M_ILD(REG_RESULT2, REG_SP, rd->memuse * 8 + 8);
2211                                         /* fall through */
2212                                 case ICMD_IRETURN:
2213                                 case ICMD_ARETURN:
2214                                         M_ILD(REG_RESULT , REG_SP, rd->memuse * 8 + 4);
2215                                         break;
2216                                 case ICMD_FRETURN:
2217                                 case ICMD_DRETURN:
2218                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 4);
2219                                         break;
2220                                 }
2221                         }
2222 #endif
2223
2224                         /* restore return address                                         */
2225
2226                         if (!jd->isleafmethod) {
2227                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
2228                                    may have a displacement overflow. */
2229
2230                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
2231                                 M_MTLR(REG_ITMP1);
2232                         }
2233
2234                         /* restore saved registers                                        */
2235
2236                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
2237                                 p--; M_ILD(rd->savintregs[i], REG_SP, p * 8);
2238                         }
2239                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
2240                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
2241                         }
2242
2243                         /* deallocate stack                                               */
2244
2245                         if (cd->stackframesize)
2246                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
2247
2248                         M_RET;
2249                         ALIGNCODENOP;
2250                         }
2251                         break;
2252
2253
2254                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
2255                         {
2256                         s4 i, l;
2257                         branch_target_t *table;
2258
2259                         table = iptr->dst.table;
2260
2261                         l = iptr->sx.s23.s2.tablelow;
2262                         i = iptr->sx.s23.s3.tablehigh;
2263
2264                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2265                         if (l == 0)
2266                                 M_INTMOVE(s1, REG_ITMP1);
2267                         else if (l <= 32768)
2268                                 M_LDA(REG_ITMP1, s1, -l);
2269                         else {
2270                                 ICONST(REG_ITMP2, l);
2271                                 M_ISUB(s1, REG_ITMP2, REG_ITMP1);
2272                         }
2273
2274                         i = i - l + 1;
2275
2276                         /* range check */
2277
2278                         M_CMPUI(REG_ITMP1, i - 1);
2279                         emit_bgt(cd, table[0].block);
2280
2281                         /* build jump table top down and use address of lowest entry */
2282
2283                         table += i;
2284
2285                         while (--i >= 0) {
2286                                 dseg_add_target(cd, table->block);
2287                                 --table;
2288                         }
2289
2290                         /* length of dataseg after last dseg_add_target is used by load */
2291
2292                         M_SLL_IMM(REG_ITMP1, 2, REG_ITMP1);
2293                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
2294                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
2295                         M_MTCTR(REG_ITMP2);
2296                         M_RTS;
2297                         ALIGNCODENOP;
2298                         }
2299                         break;
2300
2301
2302                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
2303                         {
2304                         s4 i;
2305                         lookup_target_t *lookup;
2306
2307                         lookup = iptr->dst.lookup;
2308
2309                         i = iptr->sx.s23.s2.lookupcount;
2310
2311                         MCODECHECK((i<<2)+8);
2312                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2313
2314                         while (--i >= 0) {
2315                                 if ((lookup->value >= -32768) && (lookup->value <= 32767)) {
2316                                         M_CMPI(s1, lookup->value);
2317                                 }
2318                                 else {
2319                                         disp = dseg_add_s4(cd, lookup->value);
2320                                         M_ILD(REG_ITMP2, REG_PV, disp);
2321                                         M_CMP(s1, REG_ITMP2);
2322                                 }
2323                                 emit_beq(cd, lookup->target.block);
2324                                 lookup++;
2325                         }
2326
2327                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
2328                         ALIGNCODENOP;
2329                         break;
2330                         }
2331
2332
2333                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2334
2335                         bte = iptr->sx.s23.s3.bte;
2336                         md  = bte->md;
2337                         goto gen_method;
2338
2339                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2340
2341                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2342                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2343                 case ICMD_INVOKEINTERFACE:
2344
2345                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2346
2347                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2348                                 lm = NULL;
2349                                 um = iptr->sx.s23.s3.um;
2350                                 md = um->methodref->parseddesc.md;
2351                         }
2352                         else {
2353                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2354                                 um = NULL;
2355                                 md = lm->parseddesc;
2356                         }
2357
2358 gen_method:
2359                         s3 = md->paramcount;
2360
2361                         MCODECHECK((s3 << 1) + 64);
2362
2363                         /* copy arguments to registers or stack location */
2364
2365                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2366                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2367                                 d   = md->params[s3].regoff;
2368
2369                                 /* Already Preallocated? */
2370                                 if (var->flags & PREALLOC)
2371                                         continue;
2372
2373                                 if (IS_INT_LNG_TYPE(var->type)) {
2374                                         if (!md->params[s3].inmemory) {
2375                                                 if (IS_2_WORD_TYPE(var->type)) {
2376                                                         s1 = emit_load(jd, iptr, var, d);
2377                                                         M_LNGMOVE(s1, d);
2378                                                 }
2379                                                 else {
2380                                                         s1 = emit_load(jd, iptr, var, d);
2381                                                         M_INTMOVE(s1, d);
2382                                                 }
2383                                         }
2384                                         else {
2385                                                 if (IS_2_WORD_TYPE(var->type)) {
2386                                                         s1 = emit_load(jd, iptr, var, REG_ITMP12_PACKED);
2387                                                         M_LST(s1, REG_SP, d);
2388                                                 }
2389                                                 else {
2390                                                         s1 = emit_load(jd, iptr, var, REG_ITMP1);
2391                                                         M_IST(s1, REG_SP, d);
2392                                                 }
2393                                         }
2394                                 }
2395                                 else {
2396                                         if (!md->params[s3].inmemory) {
2397                                                 s1 = emit_load(jd, iptr, var, d);
2398                                                 M_FLTMOVE(s1, d);
2399                                         }
2400                                         else {
2401                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2402                                                 M_DST(s1, REG_SP, d);
2403                                         }
2404                                 }
2405                         }
2406
2407                         switch (iptr->opc) {
2408                         case ICMD_BUILTIN:
2409                                 disp = dseg_add_functionptr(cd, bte->fp);
2410
2411                                 M_ALD(REG_PV, REG_PV, disp);  /* pointer to built-in-function */
2412
2413                                 /* generate the actual call */
2414
2415                                 M_MTCTR(REG_PV);
2416                                 M_JSR;
2417                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2418                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2419                                 M_MFLR(REG_ITMP1);
2420                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2421
2422                                 emit_exception_check(cd, iptr);
2423                                 break;
2424
2425                         case ICMD_INVOKESPECIAL:
2426                                 emit_nullpointer_check(cd, iptr, REG_A0);
2427                                 /* fall-through */
2428
2429                         case ICMD_INVOKESTATIC:
2430                                 if (lm == NULL) {
2431                                         disp = dseg_add_unique_address(cd, um);
2432
2433                                         patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
2434                                                                                 um, disp);
2435                                 }
2436                                 else
2437                                         disp = dseg_add_address(cd, lm->stubroutine);
2438
2439                                 M_ALD(REG_PV, REG_PV, disp);
2440
2441                                 /* generate the actual call */
2442
2443                                 M_MTCTR(REG_PV);
2444                                 M_JSR;
2445                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2446                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2447                                 M_MFLR(REG_ITMP1);
2448                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2449                                 break;
2450
2451                         case ICMD_INVOKEVIRTUAL:
2452                                 if (lm == NULL) {
2453                                         patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
2454
2455                                         s1 = 0;
2456                                 }
2457                                 else {
2458                                         s1 = OFFSET(vftbl_t, table[0]) +
2459                                                 sizeof(methodptr) * lm->vftblindex;
2460                                 }
2461
2462                                 /* implicit null-pointer check */
2463                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2464                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2465
2466                                 /* generate the actual call */
2467
2468                                 M_MTCTR(REG_PV);
2469                                 M_JSR;
2470                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2471                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2472                                 M_MFLR(REG_ITMP1);
2473                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2474                                 break;
2475
2476                         case ICMD_INVOKEINTERFACE:
2477                                 if (lm == NULL) {
2478                                         patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
2479
2480                                         s1 = 0;
2481                                         s2 = 0;
2482                                 }
2483                                 else {
2484                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2485                                                 sizeof(methodptr*) * lm->class->index;
2486
2487                                         s2 = sizeof(methodptr) * (lm - lm->class->methods);
2488                                 }
2489
2490                                 /* implicit null-pointer check */
2491                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2492                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2493                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2494
2495                                 /* generate the actual call */
2496
2497                                 M_MTCTR(REG_PV);
2498                                 M_JSR;
2499                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2500                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2501                                 M_MFLR(REG_ITMP1);
2502                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2503                                 break;
2504                         }
2505
2506                         /* store return value */
2507
2508                         d = md->returntype.type;
2509
2510                         if (d != TYPE_VOID) {
2511                                 if (IS_INT_LNG_TYPE(d)) {
2512                                         if (IS_2_WORD_TYPE(d)) {
2513                                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
2514                                                 M_LNGMOVE(REG_RESULT_PACKED, s1);
2515                                         }
2516                                         else {
2517                                                 s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2518                                                 M_INTMOVE(REG_RESULT, s1);
2519                                         }
2520                                 }
2521                                 else {
2522                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2523                                         M_FLTMOVE(REG_FRESULT, s1);
2524                                 }
2525                                 emit_store_dst(jd, iptr, s1);
2526                         }
2527                         break;
2528
2529
2530                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2531
2532                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2533                                 /* object type cast-check */
2534
2535                                 classinfo *super;
2536                                 s4         superindex;
2537
2538                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2539                                         super      = NULL;
2540                                         superindex = 0;
2541                                 }
2542                                 else {
2543                                         super      = iptr->sx.s23.s3.c.cls;
2544                                         superindex = super->index;
2545                                 }
2546
2547                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2548                                         CODEGEN_CRITICAL_SECTION_NEW;
2549
2550                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2551
2552                                 /* if class is not resolved, check which code to call */
2553
2554                                 if (super == NULL) {
2555                                         M_TST(s1);
2556                                         emit_label_beq(cd, BRANCH_LABEL_1);
2557
2558                                         disp = dseg_add_unique_s4(cd, 0);         /* super->flags */
2559
2560                                         patcher_add_patch_ref(jd,
2561                                                                                 PATCHER_resolve_classref_to_flags,
2562                                                                                 iptr->sx.s23.s3.c.ref,
2563                                                                                 disp);
2564
2565                                         M_ILD(REG_ITMP2, REG_PV, disp);
2566                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2567                                         emit_label_beq(cd, BRANCH_LABEL_2);
2568                                 }
2569
2570                                 /* interface checkcast code */
2571
2572                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2573                                         if (super == NULL) {
2574                                                 patcher_add_patch_ref(jd,
2575                                                                                         PATCHER_checkcast_interface,
2576                                                                                         iptr->sx.s23.s3.c.ref,
2577                                                                                         0);
2578                                         }
2579                                         else {
2580                                                 M_TST(s1);
2581                                                 emit_label_beq(cd, BRANCH_LABEL_3);
2582                                         }
2583
2584                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2585                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2586                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2587                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2588
2589                                         M_ALD(REG_ITMP3, REG_ITMP2,
2590                                                   OFFSET(vftbl_t, interfacetable[0]) -
2591                                                   superindex * sizeof(methodptr*));
2592                                         M_TST(REG_ITMP3);
2593                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2594
2595                                         if (super == NULL)
2596                                                 emit_label_br(cd, BRANCH_LABEL_4);
2597                                         else
2598                                                 emit_label(cd, BRANCH_LABEL_3);
2599                                 }
2600
2601                                 /* class checkcast code */
2602
2603                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2604                                         if (super == NULL) {
2605                                                 emit_label(cd, BRANCH_LABEL_2);
2606
2607                                                 disp = dseg_add_unique_address(cd, NULL);
2608
2609                                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2610                                                                                         iptr->sx.s23.s3.c.ref,
2611                                                                                         disp);
2612                                         }
2613                                         else {
2614                                                 disp = dseg_add_address(cd, super->vftbl);
2615
2616                                                 M_TST(s1);
2617                                                 emit_label_beq(cd, BRANCH_LABEL_5);
2618                                         }
2619
2620                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2621
2622                                         CODEGEN_CRITICAL_SECTION_START;
2623
2624                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2625                                         M_ALD(REG_ITMP2, REG_PV, disp);
2626                                         if (s1 != REG_ITMP1) {
2627                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2628                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2629
2630                                                 CODEGEN_CRITICAL_SECTION_END;
2631
2632                                                 M_ISUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2633                                         }
2634                                         else {
2635                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2636                                                 M_ISUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2637                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2638                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2639
2640                                                 CODEGEN_CRITICAL_SECTION_END;
2641                                         }
2642                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2643                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2644
2645                                         if (super != NULL)
2646                                                 emit_label(cd, BRANCH_LABEL_5);
2647                                 }
2648
2649                                 if (super == NULL) {
2650                                         emit_label(cd, BRANCH_LABEL_1);
2651                                         emit_label(cd, BRANCH_LABEL_4);
2652                                 }
2653
2654                                 d = codegen_reg_of_dst(jd, iptr, s1);
2655                         }
2656                         else {
2657                                 /* array type cast-check */
2658
2659                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2660                                 M_INTMOVE(s1, REG_A0);
2661
2662                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2663                                         disp = dseg_add_unique_address(cd, NULL);
2664
2665                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2666                                                                                 iptr->sx.s23.s3.c.ref,
2667                                                                                 disp);
2668                                 }
2669                                 else
2670                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2671
2672                                 M_ALD(REG_A1, REG_PV, disp);
2673                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2674                                 M_ALD(REG_ITMP2, REG_PV, disp);
2675                                 M_MTCTR(REG_ITMP2);
2676                                 M_JSR;
2677                                 M_TST(REG_RESULT);
2678                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2679
2680                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2681                                 d = codegen_reg_of_dst(jd, iptr, s1);
2682                         }
2683                         M_INTMOVE(s1, d);
2684                         emit_store_dst(jd, iptr, d);
2685                         break;
2686
2687                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2688
2689                         {
2690                         classinfo *super;
2691                         s4         superindex;
2692
2693                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2694                                 super      = NULL;
2695                                 superindex = 0;
2696                         }
2697                         else {
2698                                 super      = iptr->sx.s23.s3.c.cls;
2699                                 superindex = super->index;
2700                         }
2701
2702                         if ((super == NULL) || !(super->flags & ACC_INTERFACE))
2703                                 CODEGEN_CRITICAL_SECTION_NEW;
2704
2705                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2706
2707                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2708                         if (s1 == d) {
2709                                 M_MOV(s1, REG_ITMP1);
2710                                 s1 = REG_ITMP1;
2711                         }
2712
2713                         M_CLR(d);
2714
2715                         /* if class is not resolved, check which code to call */
2716
2717                         if (super == NULL) {
2718                                 M_TST(s1);
2719                                 emit_label_beq(cd, BRANCH_LABEL_1);
2720
2721                                 disp = dseg_add_unique_s4(cd, 0);             /* super->flags */
2722
2723                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
2724                                                                         iptr->sx.s23.s3.c.ref, disp);
2725
2726                                 M_ILD(REG_ITMP3, REG_PV, disp);
2727                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2728                                 emit_label_beq(cd, BRANCH_LABEL_2);
2729                         }
2730
2731                         /* interface instanceof code */
2732
2733                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2734                                 if (super == NULL) {
2735                                         patcher_add_patch_ref(jd,
2736                                                                                 PATCHER_instanceof_interface,
2737                                                                                 iptr->sx.s23.s3.c.ref, 0);
2738                                 }
2739                                 else {
2740                                         M_TST(s1);
2741                                         emit_label_beq(cd, BRANCH_LABEL_3);
2742                                 }
2743
2744                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2745                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2746                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2747                                 M_BLE(4);
2748                                 M_ALD(REG_ITMP1, REG_ITMP1,
2749                                           OFFSET(vftbl_t, interfacetable[0]) -
2750                                           superindex * sizeof(methodptr*));
2751                                 M_TST(REG_ITMP1);
2752                                 M_BEQ(1);
2753                                 M_IADD_IMM(REG_ZERO, 1, d);
2754
2755                                 if (super == NULL)
2756                                         emit_label_br(cd, BRANCH_LABEL_4);
2757                                 else
2758                                         emit_label(cd, BRANCH_LABEL_3);
2759                         }
2760
2761                         /* class instanceof code */
2762
2763                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2764                                 if (super == NULL) {
2765                                         emit_label(cd, BRANCH_LABEL_2);
2766
2767                                         disp = dseg_add_unique_address(cd, NULL);
2768
2769                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2770                                                                                 iptr->sx.s23.s3.c.ref,
2771                                                                                 disp);
2772                                 }
2773                                 else {
2774                                         disp = dseg_add_address(cd, super->vftbl);
2775
2776                                         M_TST(s1);
2777                                         emit_label_beq(cd, BRANCH_LABEL_5);
2778                                 }
2779
2780                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2781                                 M_ALD(REG_ITMP2, REG_PV, disp);
2782
2783                                 CODEGEN_CRITICAL_SECTION_START;
2784
2785                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2786                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2787                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2788
2789                                 CODEGEN_CRITICAL_SECTION_END;
2790
2791                                 M_ISUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2792                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2793                                 M_CLR(d);
2794                                 M_BGT(1);
2795                                 M_IADD_IMM(REG_ZERO, 1, d);
2796
2797                                 if (super != NULL)
2798                                         emit_label(cd, BRANCH_LABEL_5);
2799                         }
2800
2801                         if (super == NULL) {
2802                                 emit_label(cd, BRANCH_LABEL_1);
2803                                 emit_label(cd, BRANCH_LABEL_4);
2804                         }
2805
2806                         emit_store_dst(jd, iptr, d);
2807                         }
2808                         break;
2809
2810                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2811
2812                         /* check for negative sizes and copy sizes to stack if necessary  */
2813
2814                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2815
2816                         for (s1 = iptr->s1.argcount; --s1 >= 0;) {
2817                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2818
2819                                 /* copy SAVEDVAR sizes to stack */
2820
2821                                 /* Already Preallocated? */
2822                                 if (!(var->flags & PREALLOC)) {
2823                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2824 #if defined(__DARWIN__)
2825                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 4);
2826 #else
2827                                         M_IST(s2, REG_SP, LA_SIZE + (s1 + 3) * 4);
2828 #endif
2829                                 }
2830                         }
2831
2832                         /* a0 = dimension count */
2833
2834                         ICONST(REG_A0, iptr->s1.argcount);
2835
2836                         /* is patcher function set? */
2837
2838                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2839                                 disp = dseg_add_unique_address(cd, NULL);
2840
2841                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2842                                                                         iptr->sx.s23.s3.c.ref, disp);
2843                         }
2844                         else
2845                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2846
2847                         /* a1 = arraydescriptor */
2848
2849                         M_ALD(REG_A1, REG_PV, disp);
2850
2851                         /* a2 = pointer to dimensions = stack pointer */
2852
2853 #if defined(__DARWIN__)
2854                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 4);
2855 #else
2856                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 4);
2857 #endif
2858
2859                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2860                         M_ALD(REG_ITMP3, REG_PV, disp);
2861                         M_MTCTR(REG_ITMP3);
2862                         M_JSR;
2863
2864                         /* check for exception before result assignment */
2865
2866                         emit_exception_check(cd, iptr);
2867
2868                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2869                         M_INTMOVE(REG_RESULT, d);
2870                         emit_store_dst(jd, iptr, d);
2871                         break;
2872
2873                 default:
2874                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2875                                                                                    iptr->opc);
2876                         return false;
2877         } /* switch */
2878
2879         } /* for instruction */
2880
2881         } /* if (bptr -> flags >= BBREACHED) */
2882         } /* for basic block */
2883
2884         dseg_createlinenumbertable(cd);
2885
2886         /* generate traps */
2887
2888         emit_patcher_traps(jd);
2889
2890         /* everything's ok */
2891
2892         return true;
2893 }
2894
2895
2896 /* codegen_emit_stub_compiler **************************************************
2897
2898    Emits a stub routine which calls the compiler.
2899
2900 *******************************************************************************/
2901
2902 void codegen_emit_stub_compiler(jitdata *jd)
2903 {
2904         methodinfo  *m;
2905         codegendata *cd;
2906
2907         /* get required compiler data */
2908
2909         m  = jd->m;
2910         cd = jd->cd;
2911
2912         /* code for the stub */
2913
2914         M_ALD_INTERN(REG_ITMP1, REG_PV, -2 * SIZEOF_VOID_P);
2915         M_ALD_INTERN(REG_PV, REG_PV, -3 * SIZEOF_VOID_P);
2916         M_MTCTR(REG_PV);
2917         M_RTS;
2918 }
2919
2920
2921 /* codegen_emit_stub_native ****************************************************
2922
2923    Emits a stub routine which calls a native method.
2924
2925 *******************************************************************************/
2926
2927 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f)
2928 {
2929         methodinfo  *m;
2930         codeinfo    *code;
2931         codegendata *cd;
2932         methoddesc  *md;
2933         s4           nativeparams;
2934         s4           i, j;                 /* count variables                    */
2935         s4           t;
2936         s4           s1, s2, disp;
2937         s4           funcdisp;
2938
2939         /* get required compiler data */
2940
2941         m    = jd->m;
2942         code = jd->code;
2943         cd   = jd->cd;
2944
2945         /* set some variables */
2946
2947         md = m->parseddesc;
2948         nativeparams = (m->flags & ACC_STATIC) ? 2 : 1;
2949
2950         /* calculate stackframe size */
2951
2952         cd->stackframesize =
2953                 sizeof(stackframeinfo) / SIZEOF_VOID_P +
2954                 sizeof(localref_table) / SIZEOF_VOID_P +
2955                 4 +                             /* 4 stackframeinfo arguments (darwin)*/
2956                 nmd->paramcount * 2 +           /* assume all arguments are doubles   */
2957                 nmd->memuse;
2958
2959         /* keep stack 16-byte aligned */
2960
2961         cd->stackframesize = (cd->stackframesize + 3) & ~3;
2962
2963         /* create method header */
2964
2965         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
2966         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
2967         (void) dseg_add_unique_s4(cd, 0);                      /* IsSync          */
2968         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
2969         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
2970         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
2971         (void) dseg_addlinenumbertablesize(cd);
2972         (void) dseg_add_unique_s4(cd, 0);                      /* ExTableSize     */
2973
2974         /* generate code */
2975
2976         M_MFLR(REG_ZERO);
2977         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
2978         M_STWU(REG_SP, REG_SP, -(cd->stackframesize * 8));
2979
2980         /* get function address (this must happen before the stackframeinfo) */
2981
2982         funcdisp = dseg_add_functionptr(cd, f);
2983
2984 #if !defined(WITH_STATIC_CLASSPATH)
2985         if (f == NULL)
2986                 patcher_add_patch_ref(jd, PATCHER_resolve_native_function, m, funcdisp);
2987 #endif
2988
2989         /* emit trace code */
2990
2991         emit_verbosecall_enter(jd);
2992
2993 #if defined(ENABLE_GC_CACAO)
2994         /* Save callee saved integer registers in stackframeinfo (GC may
2995            need to recover them during a collection). */
2996
2997         disp = cd->stackframesize * 4 - sizeof(stackframeinfo) +
2998                 OFFSET(stackframeinfo, intregs);
2999
3000         for (i = 0; i < INT_SAV_CNT; i++)
3001                 M_AST(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
3002 #endif
3003
3004         /* save integer and float argument registers */
3005
3006         for (i = 0; i < md->paramcount; i++) {
3007                 if (!md->params[i].inmemory) {
3008                         s1 = md->params[i].regoff;
3009
3010                         switch (md->paramtypes[i].type) {
3011                         case TYPE_INT:
3012                         case TYPE_ADR:
3013                                 M_IST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
3014                                 break;
3015                         case TYPE_LNG:
3016                                 M_LST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
3017                                 break;
3018                         case TYPE_FLT:
3019                         case TYPE_DBL:
3020                                 M_DST(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
3021                                 break;
3022                         }
3023                 }
3024         }
3025
3026         /* create native stack info */
3027
3028         M_AADD_IMM(REG_SP, cd->stackframesize * 8, REG_A0);
3029         M_MOV(REG_PV, REG_A1);
3030         M_AADD_IMM(REG_SP, cd->stackframesize * 8, REG_A2);
3031         M_ALD(REG_A3, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
3032         disp = dseg_add_functionptr(cd, codegen_start_native_call);
3033         M_ALD(REG_ITMP1, REG_PV, disp);
3034         M_MTCTR(REG_ITMP1);
3035         M_JSR;
3036
3037         /* restore integer and float argument registers */
3038
3039         for (i = 0; i < md->paramcount; i++) {
3040                 if (!md->params[i].inmemory) {
3041                         s1 = md->params[i].regoff;
3042
3043                         switch (md->paramtypes[i].type) {
3044                         case TYPE_INT:
3045                         case TYPE_ADR:
3046                                 M_ILD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
3047                                 break;
3048                         case TYPE_LNG:
3049                                 M_LLD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
3050                                 break;
3051                         case TYPE_FLT:
3052                         case TYPE_DBL:
3053                                 M_DLD(s1, REG_SP, LA_SIZE + 4*4 + i * 8);
3054                                 break;
3055                         }
3056                 }
3057         }
3058
3059         /* copy or spill arguments to new locations */
3060
3061         for (i = md->paramcount - 1, j = i + nativeparams; i >= 0; i--, j--) {
3062                 t = md->paramtypes[i].type;
3063
3064                 if (IS_INT_LNG_TYPE(t)) {
3065                         if (!md->params[i].inmemory) {
3066                                 s1 = md->params[i].regoff;
3067                                 s2 = nmd->params[j].regoff;
3068
3069                                 if (!nmd->params[j].inmemory) {
3070                                         if (IS_2_WORD_TYPE(t))
3071                                                 M_LNGMOVE(s1, s2);
3072                                         else
3073                                                 M_INTMOVE(s1, s2);
3074                                 }
3075                                 else {
3076                                         if (IS_2_WORD_TYPE(t))
3077                                                 M_LST(s1, REG_SP, s2);
3078                                         else
3079                                                 M_IST(s1, REG_SP, s2);
3080                                 }
3081                         }
3082                         else {
3083                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
3084                                 s2 = nmd->params[j].regoff;
3085
3086                                 M_ILD(REG_ITMP1, REG_SP, s1);
3087                                 if (IS_2_WORD_TYPE(t))
3088                                         M_ILD(REG_ITMP2, REG_SP, s1 + 4);
3089
3090                                 M_IST(REG_ITMP1, REG_SP, s2);
3091                                 if (IS_2_WORD_TYPE(t))
3092                                         M_IST(REG_ITMP2, REG_SP, s2 + 4);
3093                         }
3094                 }
3095                 else {
3096                         /* We only copy spilled float arguments, as the float
3097                            argument registers keep unchanged. */
3098
3099                         if (md->params[i].inmemory) {
3100                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
3101                                 s2 = nmd->params[j].regoff;
3102
3103                                 M_DLD(REG_FTMP1, REG_SP, s1);
3104
3105                                 if (IS_2_WORD_TYPE(t))
3106                                         M_DST(REG_FTMP1, REG_SP, s2);
3107                                 else
3108                                         M_FST(REG_FTMP1, REG_SP, s2);
3109                         }
3110                 }
3111         }
3112
3113         /* put class into second argument register */
3114
3115         if (m->flags & ACC_STATIC) {
3116                 disp = dseg_add_address(cd, m->class);
3117                 M_ALD(REG_A1, REG_PV, disp);
3118         }
3119
3120         /* put env into first argument register */
3121
3122         disp = dseg_add_address(cd, _Jv_env);
3123         M_ALD(REG_A0, REG_PV, disp);
3124
3125         /* generate the actual native call */
3126
3127         M_ALD(REG_ITMP3, REG_PV, funcdisp);
3128         M_MTCTR(REG_ITMP3);
3129         M_JSR;
3130
3131         /* print call trace */
3132
3133         emit_verbosecall_exit(jd);
3134
3135         /* save return value */
3136
3137         switch (md->returntype.type) {
3138         case TYPE_INT:
3139         case TYPE_ADR:
3140                 M_IST(REG_RESULT, REG_SP, LA_SIZE + 1 * 8);
3141                 break;
3142         case TYPE_LNG:
3143                 M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 8);
3144                 break;
3145         case TYPE_FLT:
3146         case TYPE_DBL:
3147                 M_DST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
3148                 break;
3149         case TYPE_VOID:
3150                 break;
3151         }
3152
3153         /* remove native stackframe info */
3154
3155         M_AADD_IMM(REG_SP, cd->stackframesize * 8, REG_A0);
3156         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
3157         M_ALD(REG_ITMP1, REG_PV, disp);
3158         M_MTCTR(REG_ITMP1);
3159         M_JSR;
3160         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
3161
3162         /* restore return value */
3163
3164         switch (md->returntype.type) {
3165         case TYPE_INT:
3166         case TYPE_ADR:
3167                 M_ILD(REG_RESULT, REG_SP, LA_SIZE + 1 * 8);
3168                 break;
3169         case TYPE_LNG:
3170                 M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 8);
3171                 break;
3172         case TYPE_FLT:
3173         case TYPE_DBL:
3174                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
3175                 break;
3176         case TYPE_VOID:
3177                 break;
3178         }
3179
3180 #if defined(ENABLE_GC_CACAO)
3181         /* Restore callee saved integer registers from stackframeinfo (GC
3182            might have modified them during a collection). */
3183
3184         disp = cd->stackframesize * 4 - sizeof(stackframeinfo) +
3185                 OFFSET(stackframeinfo, intregs);
3186
3187         for (i = 0; i < INT_SAV_CNT; i++)
3188                 M_ALD(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
3189 #endif
3190
3191         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
3192         M_MTLR(REG_ITMP2_XPC);
3193         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe       */
3194
3195         /* check for exception */
3196
3197         M_TST(REG_ITMP1_XPTR);
3198         M_BNE(1);                           /* if no exception then return        */
3199
3200         M_RET;
3201
3202         /* handle exception */
3203
3204         M_IADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
3205
3206         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
3207         M_ALD(REG_ITMP3, REG_PV, disp);
3208         M_MTCTR(REG_ITMP3);
3209         M_RTS;
3210
3211         /* generate patcher traps */
3212
3213         emit_patcher_traps(jd);
3214 }
3215
3216
3217 /*
3218  * These are local overrides for various environment variables in Emacs.
3219  * Please do not remove this and leave it at the end of the file, where
3220  * Emacs will automagically detect them.
3221  * ---------------------------------------------------------------------
3222  * Local variables:
3223  * mode: c
3224  * indent-tabs-mode: t
3225  * c-basic-offset: 4
3226  * tab-width: 4
3227  * End:
3228  * vim:noexpandtab:sw=4:ts=4:
3229  */