src/vm/jit/powerpc/codegen.c

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