src/vm/jit/powerpc64/codegen.c

   1 /* src/vm/jit/powerpc64/codegen.c - machine code generator for 64-bit PowerPC
   2
   3    Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    $Id: codegen.c 7724 2007-04-16 21:07:10Z twisti $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <stdio.h>
  34 #include <signal.h>
  35
  36 #include "vm/types.h"
  37
  38 #include "md-abi.h"
  39
  40 #include "vm/jit/powerpc64/arch.h"
  41 #include "vm/jit/powerpc64/codegen.h"
  42
  43 #include "mm/memory.h"
  44
  45 #include "native/native.h"
  46
  47 #include "vm/builtin.h"
  48 #include "vm/exceptions.h"
  49 #include "vm/global.h"
  50 #include "vm/stringlocal.h"
  51 #include "vm/vm.h"
  52
  53 #include "vm/jit/abi.h"
  54 #include "vm/jit/abi-asm.h"
  55 #include "vm/jit/md.h"
  56 #include "vm/jit/asmpart.h"
  57 #include "vm/jit/codegen-common.h"
  58 #include "vm/jit/dseg.h"
  59 #include "vm/jit/emit-common.h"
  60 #include "vm/jit/jit.h"
  61 #include "vm/jit/parse.h"
  62 #include "vm/jit/patcher.h"
  63 #include "vm/jit/reg.h"
  64 #include "vm/jit/replace.h"
  65 #include "vm/jit/stacktrace.h"
  66
  67 #include "vmcore/loader.h"
  68 #include "vmcore/options.h"
  69
  70 #if defined(ENABLE_LSRA)
  71 # include "vm/jit/allocator/lsra.h"
  72 #endif
  73
  74 #if defined(ENABLE_THREADS)
  75 # include "threads/native/lock.h"
  76 #endif
  77
  78
  79 /* codegen_emit ****************************************************************
  80
  81    Generates machine code.
  82
  83 *******************************************************************************/
  84
  85 bool codegen_emit(jitdata *jd)
  86 {
  87         methodinfo         *m;
  88         codeinfo           *code;
  89         codegendata        *cd;
  90         registerdata       *rd;
  91         s4                  len, s1, s2, s3, d, disp;
  92         ptrint              a;
  93         varinfo            *var;
  94         basicblock         *bptr;
  95         instruction        *iptr;
  96         exception_entry    *ex;
  97         u2                  currentline;
  98         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  99         unresolved_method  *um;
 100         builtintable_entry *bte;
 101         methoddesc         *md;
 102         s4                  fieldtype;
 103         s4                  varindex;
 104         unresolved_field   *uf;
 105         fieldinfo          *fi;
 106
 107         /* get required compiler data */
 108
 109         m    = jd->m;
 110         code = jd->code;
 111         cd   = jd->cd;
 112         rd   = jd->rd;
 113
 114         /* prevent compiler warnings */
 115
 116         d = 0;
 117         lm = NULL;
 118         bte = NULL;
 119
 120         {
 121         s4 i, p, t, l;
 122         s4 savedregs_num;
 123
 124         savedregs_num = 0;
 125
 126         /* space to save used callee saved registers */
 127
 128         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 129         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 130
 131         cd->stackframesize = rd->memuse + savedregs_num;
 132
 133 #if defined(ENABLE_THREADS)
 134         /* space to save argument of monitor_enter and Return Values to survive */
 135     /* monitor_exit. The stack position for the argument can not be shared  */
 136         /* with place to save the return register on PPC64, since both values     */
 137         /* reside in R3 */
 138         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 139                 /* reserve 2 slots for long/double return values for monitorexit */
 140                 cd->stackframesize += 2;
 141         }
 142
 143 #endif
 144
 145         /* create method header */
 146
 147         /* align stack to 16-bytes */
 148
 149 /* FIXME */
 150 /*      if (!m->isleafmethod || opt_verbosecall) */
 151 /*              stackframesize = (stackframesize + 3) & ~3;
 152 */
 153 /*      else if (m->isleafmethod && (stackframesize == LA_WORD_SIZE)) */
 154 /*              stackframesize = 0; */
 155
 156         (void) dseg_add_unique_address(cd, code);                      /* CodeinfoPointer */
 157         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8);             /* FrameSize       */
 158
 159 #if defined(ENABLE_THREADS)
 160         /* IsSync contains the offset relative to the stack pointer for the
 161            argument of monitor_exit used in the exception handler. Since the
 162            offset could be zero and give a wrong meaning of the flag it is
 163            offset by one.
 164         */
 165
 166         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 167                 (void) dseg_add_unique_s4(cd, (rd->memuse + 1) * 8);       /* IsSync          */
 168         else
 169 #endif
 170                 (void) dseg_add_unique_s4(cd, 0);                          /* IsSync          */
 171
 172         (void) dseg_add_unique_s4(cd, jd->isleafmethod);                /* IsLeaf          */
 173         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave         */
 174         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave         */
 175
 176         dseg_addlinenumbertablesize(cd);
 177
 178         (void) dseg_add_unique_s4(cd, jd->exceptiontablelength);       /* ExTableSize     */
 179
 180         /* create exception table */
 181
 182         for (ex = jd->exceptiontable; ex != NULL; ex = ex->down) {
 183                 dseg_add_target(cd, ex->start);
 184                 dseg_add_target(cd, ex->end);
 185                 dseg_add_target(cd, ex->handler);
 186                 (void) dseg_add_unique_address(cd, ex->catchtype.any);
 187         }
 188
 189         /* create stack frame (if necessary) */
 190
 191         if (!jd->isleafmethod) {
 192                 M_MFLR(REG_ZERO);
 193                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 194         }
 195
 196         if (cd->stackframesize)
 197                 M_STDU(REG_SP, REG_SP, -cd->stackframesize * 8);
 198
 199         /* save return address and used callee saved registers */
 200
 201         p = cd->stackframesize;
 202         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 203                 p--; M_LST(rd->savintregs[i], REG_SP, p * 8);
 204         }
 205         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 206                 p --; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 207         }
 208
 209         /* take arguments out of register or stack frame */
 210
 211         md = m->parseddesc;
 212
 213         for (p = 0, l = 0; p < md->paramcount; p++) {
 214                 t = md->paramtypes[p].type;
 215                 varindex = jd->local_map[l*5 + t];
 216                 l++;
 217                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 218                         l++;
 219                 if (varindex == UNUSED)
 220                         continue;
 221
 222                 var = VAR(varindex);
 223                 s1  = md->params[p].regoff;
 224
 225                 if (IS_INT_LNG_TYPE(t)) {
 226                         if (!md->params[p].inmemory) {
 227                                 if (!IS_INMEMORY(var->flags))
 228                                         M_INTMOVE(s1, var->vv.regoff);
 229                                 else
 230                                         M_LST(s1, REG_SP, var->vv.regoff * 8);
 231                         }
 232                         else {
 233                                 if (!IS_INMEMORY(var->flags))
 234                                         M_LLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 8);
 235                                 else
 236                                         var->vv.regoff = cd->stackframesize + s1;
 237                         }
 238                 }
 239                 else {
 240                         if (!md->params[p].inmemory) {
 241                                 if (!IS_INMEMORY(var->flags))
 242                                         M_FLTMOVE(s1, var->vv.regoff);
 243                                 else
 244                                         M_DST(s1, REG_SP, var->vv.regoff * 8);
 245                         }
 246                         else {
 247                                 if (!(var->flags & INMEMORY)) {
 248                                         if (IS_2_WORD_TYPE(t))
 249                                                 M_DLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 8);
 250                                         else
 251                                                 M_DLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 8);
 252                                 }
 253                                 else
 254                                         var->vv.regoff = cd->stackframesize + s1;
 255                         }
 256                 }
 257         }
 258
 259         /* save monitorenter argument */
 260
 261 #if defined(ENABLE_THREADS)
 262
 263         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 264
 265                 /* stackoffset for argument used for LOCK_monitor_exit */
 266                 s1 = rd->memuse;
 267
 268 #if !defined (NDEBUG)
 269                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 270                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 271
 272                         for (p = 0; p < INT_ARG_CNT; p++)
 273                                 M_LST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 274
 275                         for (p = 0; p < FLT_ARG_CNT; p++)
 276                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 277
 278                         /* used for LOCK_monitor_exit, adopt size because we created another stackframe */
 279                         s1 += (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT);
 280                 }
 281 #endif
 282
 283                 p = dseg_add_functionptr(cd, LOCK_monitor_enter);
 284                 M_ALD(REG_ITMP3, REG_PV, p);
 285                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
 286                 M_MTCTR(REG_ITMP3);
 287
 288                 /* get or test the lock object */
 289
 290                 if (m->flags & ACC_STATIC) {
 291                         p = dseg_add_address(cd, &m->class->object.header);
 292                         M_ALD(REG_A0, REG_PV, p);
 293                 }
 294                 else {
 295                         M_TST(REG_A0);
 296                         M_BNE(1);
 297                         M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
 298                 }
 299
 300                 M_AST(REG_A0, REG_SP, s1 * 8);                      /* rd->memuse * 8 */
 301                 M_JSR;
 302
 303 #if !defined(NDEBUG)
 304                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 305                         for (p = 0; p < INT_ARG_CNT; p++)
 306                                 M_LLD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 307
 308                         for (p = 0; p < FLT_ARG_CNT; p++)
 309                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 310
 311                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 312                 }
 313 #endif
 314         }
 315 #endif
 316
 317         /* call trace function */
 318 #if !defined (NDEBUG)
 319         if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
 320                 emit_verbosecall_enter(jd);
 321
 322         }
 323 #endif
 324
 325         /* end of header generation */
 326
 327         /* create replacement points */
 328
 329         REPLACEMENT_POINTS_INIT(cd, jd);
 330
 331         /* walk through all basic blocks */
 332
 333         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 334
 335                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 336
 337                 if (bptr->flags >= BBREACHED) {
 338
 339                 /* branch resolving */
 340                 codegen_resolve_branchrefs(cd, bptr);
 341
 342                 /* handle replacement points */
 343
 344                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 345
 346                 /* copy interface registers to their destination */
 347
 348                 len = bptr->indepth;
 349                 MCODECHECK(64+len);
 350
 351 #if defined(ENABLE_LSRA)
 352                 if (opt_lsra) {
 353                         while (len) {
 354                                 len--;
 355                                 var = VAR(bptr->invars[len]);
 356                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 357                                         /* d = reg_of_var(m, var, REG_ITMP1); */
 358                                         if (!(var->flags & INMEMORY))
 359                                                 d = var->vv.regoff;
 360                                         else
 361                                                 d = REG_ITMP1;
 362                                         M_INTMOVE(REG_ITMP1, d);
 363                                         emit_store(jd, NULL, var, d);
 364                                 }
 365                         }
 366                 } else {
 367 #endif
 368                 while (len) {
 369                         len--;
 370                         var = VAR(bptr->invars[len]);
 371                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 372                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 373                                 M_INTMOVE(REG_ITMP1, d);
 374                                 emit_store(jd, NULL, var, d);
 375                         }
 376                         else {
 377                                 assert((var->flags & INOUT));
 378                         }
 379                 }
 380
 381 #if defined(ENABLE_LSRA)
 382                 }
 383 #endif
 384                 /* walk through all instructions */
 385
 386                 len = bptr->icount;
 387                 currentline = 0;
 388
 389                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 390                         bool sign_ext = false;
 391                         if (iptr->line != currentline) {
 392                                 dseg_addlinenumber(cd, iptr->line);
 393                                 currentline = iptr->line;
 394                         }
 395
 396                         MCODECHECK(64);   /* an instruction usually needs < 64 words      */
 397
 398                 switch (iptr->opc) {
 399                 case ICMD_NOP:        /* ...  ==> ...                                 */
 400                 case ICMD_POP:        /* ..., value  ==> ...                          */
 401                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 402                         break;
 403
 404                 case ICMD_INLINE_START:
 405
 406                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 407                         break;
 408
 409                 case ICMD_INLINE_BODY:
 410
 411                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 412                         dseg_addlinenumber_inline_start(cd, iptr);
 413                         dseg_addlinenumber(cd, iptr->line);
 414                         break;
 415
 416                 case ICMD_INLINE_END:
 417
 418                         dseg_addlinenumber_inline_end(cd, iptr);
 419                         dseg_addlinenumber(cd, iptr->line);
 420                         break;
 421
 422                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 423
 424                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 425                         M_TST(s1);
 426                         M_BEQ(0);
 427                         emit_nullpointer_check(cd, iptr, s1);
 428                         break;
 429
 430                 /* constant operations ************************************************/
 431
 432                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 433
 434                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 435                         ICONST(d, iptr->sx.val.i);
 436                         emit_store_dst(jd, iptr, d);
 437                         break;
 438
 439                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 440
 441                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 442                         LCONST(d, iptr->sx.val.l);
 443                         emit_store_dst(jd, iptr, d);
 444                         break;
 445
 446                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 447
 448                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 449                         a = dseg_add_float(cd, iptr->sx.val.f);
 450                         M_FLD(d, REG_PV, a);
 451                         emit_store_dst(jd, iptr, d);
 452                         break;
 453
 454                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 455
 456                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 457                         a = dseg_add_double(cd, iptr->sx.val.d);
 458                         M_DLD(d, REG_PV, a);
 459                         emit_store_dst(jd, iptr, d);
 460                         break;
 461
 462                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 463
 464                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 465
 466                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 467                                 disp = dseg_add_unique_address(cd, iptr->sx.val.c.ref);
 468                                 codegen_addpatchref(cd, PATCHER_aconst,
 469                                                                         iptr->sx.val.c.ref,
 470                                                                     disp);
 471                         } else  {
 472                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 473                         }
 474                         M_ALD(d, REG_PV, disp);
 475                         emit_store_dst(jd, iptr, d);
 476                         break;
 477
 478
 479                 /* load/store/copy/move operations ************************************/
 480
 481                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 482                 case ICMD_ALOAD:      /* s1.localindex = local variable               */
 483                 case ICMD_LLOAD:
 484                 case ICMD_FLOAD:      /* ...  ==> ..., content of local variable      */
 485                 case ICMD_DLOAD:      /* ...  ==> ..., content of local variable      */
 486                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 487                 case ICMD_LSTORE:
 488                 case ICMD_FSTORE:     /* ..., value  ==> ...                          */
 489                 case ICMD_DSTORE:     /* ..., value  ==> ...                          */
 490                 case ICMD_COPY:
 491                 case ICMD_MOVE:
 492
 493                         emit_copy(jd, iptr, VAROP(iptr->s1), VAROP(iptr->dst));
 494                         break;
 495
 496                 case ICMD_ASTORE:
 497                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 498                                 emit_copy(jd, iptr, VAROP(iptr->s1), VAROP(iptr->dst));
 499                         break;
 500
 501
 502                 /* integer operations *************************************************/
 503
 504                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 505                         sign_ext = true;
 506                 case ICMD_LNEG:
 507                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 508                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 509                         M_NEG(s1, d);
 510                         if (sign_ext) M_EXTSW(d, d);
 511                         emit_store_dst(jd, iptr, d);
 512                         break;
 513
 514
 515                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 516
 517                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 518                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 519                         M_INTMOVE(s1, d);
 520                         emit_store_dst(jd, iptr, d);
 521                         break;
 522
 523                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 524
 525                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 526                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 527                         M_ISEXT(s1, d);
 528                         emit_store_dst(jd, iptr, d);
 529                         break;
 530
 531                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 532
 533                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 534                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 535                         M_BSEXT(s1, d);
 536                         emit_store_dst(jd, iptr, d);
 537                         break;
 538
 539                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 540
 541                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 542                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 543                         M_CZEXT(s1, d);
 544                         emit_store_dst(jd, iptr, d);
 545                         break;
 546
 547                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 548
 549                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 550                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 551                         M_SSEXT(s1, d);
 552                         emit_store_dst(jd, iptr, d);
 553                         break;
 554
 555
 556                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 557
 558                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 559                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 560                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 561                         M_IADD(s1, s2, d);
 562                         M_EXTSW(d,d);
 563                         emit_store_dst(jd, iptr, d);
 564                         break;
 565
 566                 case ICMD_IINC:
 567                 case ICMD_IADDCONST:
 568
 569                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 570                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 571                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 572                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 573                         } else {
 574                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 575                                 M_IADD(s1, REG_ITMP2, d);
 576                         }
 577                         M_EXTSW(d,d);
 578                         emit_store_dst(jd, iptr, d);
 579                         break;
 580
 581                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 582
 583                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 584                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 585                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 586                         M_LADD(s1, s2, d);
 587                         emit_store_dst(jd, iptr, d);
 588                         break;
 589
 590                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 591                                       /* sx.val.l = constant                          */
 592
 593                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 594                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 595                         /* XXX check me */
 596                         if ((iptr->sx.val.l >= -32768) && (iptr->sx.val.l <= 32767)) {
 597                                 M_LADD_IMM(s1, iptr->sx.val.l, d);
 598                         } else {
 599                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 600                                 M_LADD(s1, REG_ITMP2, d);
 601                         }
 602                         emit_store_dst(jd, iptr, d);
 603                         break;
 604
 605                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 606
 607                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 608                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 609                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 610                         M_SUB(s1, s2, d);
 611                         M_EXTSW(d, d);
 612                         emit_store_dst(jd, iptr, d);
 613                         break;
 614
 615                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 616                                       /* sx.val.i = constant                          */
 617
 618                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 619                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 620                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768)) {
 621                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 622                         } else {
 623                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 624                                 M_SUB(s1, REG_ITMP2, d);
 625                         }
 626                         M_EXTSW(d, d);
 627                         emit_store_dst(jd, iptr, d);
 628                         break;
 629
 630                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 631
 632                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 633                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 634                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 635                         M_SUB(s1, s2, d);
 636                         emit_store_dst(jd, iptr, d);
 637                         break;
 638
 639                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 640                                       /* sx.val.l = constant                          */
 641
 642                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 643                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 644                         /* XXX check me */
 645                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767)) {
 646                                 M_LADD_IMM(s1, -iptr->sx.val.l, d);
 647                         } else {
 648                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 649                                 M_SUB(s1, REG_ITMP2, d);
 650                         }
 651                         emit_store_dst(jd, iptr, d);
 652                         break;
 653
 654                 case ICMD_IDIV:
 655                         sign_ext = true;
 656                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 657
 658                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 659                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 660                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 661                         emit_arithmetic_check(cd, iptr, s2);
 662
 663                         M_DIV(s1, s2, d);
 664                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 665                         /* we only need to check this if we did a LDIV, not for IDIV */
 666                         if (!sign_ext)  {
 667                                 M_MFXER(REG_ITMP2);
 668                                 M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 669                                 M_BLE(1);
 670                                 M_MOV(s1, d);                           /* java specs says result == dividend */
 671                         }
 672                         if (sign_ext) M_EXTSW(d, d);
 673                         emit_store_dst(jd, iptr, d);
 674                         break;
 675
 676                 case ICMD_IREM:
 677                         sign_ext = true;
 678                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 679                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 680                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 681                         emit_arithmetic_check(cd, iptr, s2);
 682
 683                         M_DIV(s1, s2,  REG_ITMP3);
 684                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 685                         /* we only need to check this if we did a LDIV, not for IDIV */
 686                         if (!sign_ext)  {
 687                                 M_MFXER(REG_ITMP2);
 688                                 M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 689                                 M_BLE(2);
 690                                 LCONST(REG_ITMP3, 0);                   /* result == 0 in this case */
 691                                 M_BR(2);
 692                         }
 693                         M_MUL(REG_ITMP3, s2, REG_ITMP2);
 694                         M_SUB(s1, REG_ITMP2,  REG_ITMP3);
 695                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 696
 697                         M_MOV(REG_ITMP3, d);
 698                         emit_store_dst(jd, iptr, REG_ITMP1);
 699                         break;
 700
 701
 702                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 703                         sign_ext = true;
 704                 case ICMD_LMUL:
 705                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 706                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 707                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 708                         M_MUL(s1, s2, d);
 709                         if (sign_ext) M_EXTSW(d, d);
 710                         emit_store_dst(jd, iptr, d);
 711                         break;
 712
 713                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 714                                       /* sx.val.i = constant                          */
 715
 716                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 717                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 718                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 719                                 M_MUL_IMM(s1, iptr->sx.val.i, d);
 720                         else {
 721                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 722                                 M_MUL(s1, REG_ITMP3, d);
 723                         }
 724                         M_EXTSW(d, d);
 725                         emit_store_dst(jd, iptr, d);
 726                         break;
 727                 case ICMD_LMULCONST:
 728                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 729                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 730                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767))
 731                                 M_MUL_IMM(s1, iptr->sx.val.l, d);
 732                         else {
 733                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 734                                 M_MUL(s1, REG_ITMP3, d);
 735                         }
 736                         emit_store_dst(jd, iptr, d);
 737                         break;
 738
 739                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 740
 741                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 742                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 743                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 744                         M_ADDZE(d, d);
 745                         emit_store_dst(jd, iptr, d);
 746                         break;
 747
 748                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 749
 750                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 751                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 752                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 753                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 754                         M_SLL(s1, REG_ITMP3, d);
 755                         M_EXTSW(d, d);
 756                         emit_store_dst(jd, iptr, d);
 757                         break;
 758
 759                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 760                                       /* sx.val.i = constant                             */
 761
 762                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 763                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 764                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 765                         M_EXTSW(d,d);
 766                         emit_store_dst(jd, iptr, d);
 767                         break;
 768
 769                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 770
 771                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 772                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 773                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 774                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 775                         M_SRA(s1, REG_ITMP3, d);
 776                         emit_store_dst(jd, iptr, d);
 777                         break;
 778
 779                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 780                                       /* sx.val.i = constant                             */
 781
 782                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 783                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 784                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 785                         emit_store_dst(jd, iptr, d);
 786                         break;
 787
 788                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 789
 790                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 791                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 792                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 793                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 794                         M_MOV(s1, REG_ITMP1);
 795                         M_CLR_HIGH(REG_ITMP1);
 796                         M_SRL(REG_ITMP1, REG_ITMP2, d);
 797                         emit_store_dst(jd, iptr, d);
 798                         break;
 799
 800                 case ICMD_IUSHRCONST: /* ..., 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 & 0x1f) {
 806                                 M_MOV(s1, REG_ITMP1);
 807                                 M_CLR_HIGH(REG_ITMP1);
 808                                 M_SRA_IMM(REG_ITMP1, iptr->sx.val.i & 0x1f, d);
 809                         } else {
 810                                 M_INTMOVE(s1, d);
 811                         }
 812                         emit_store_dst(jd, iptr, d);
 813                         break;
 814
 815                 case ICMD_LSHLCONST:
 816                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 817                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 818                         M_SLL_IMM(s1, iptr->sx.val.i & 0x3f, d);
 819                         emit_store_dst(jd, iptr, d);
 820                         break;
 821                 case ICMD_LSHL:
 822                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 823                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 824                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 825                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 826                         M_SLL(s1, REG_ITMP2, d);
 827                         emit_store_dst(jd, iptr, d);
 828                         break;
 829                 case ICMD_LSHRCONST:
 830                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 831                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 832                         M_SRA_IMM(s1, iptr->sx.val.i & 0x3f, d);
 833                         emit_store_dst(jd, iptr, d);
 834                         break;
 835                 case ICMD_LSHR:
 836                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 837                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 838                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 839                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 840                         M_SRA(s1, REG_ITMP2, d);
 841                         emit_store_dst(jd, iptr, d);
 842                         break;
 843                 case ICMD_LUSHRCONST:
 844                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 845                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 846                         M_SRL_IMM(s1, iptr->sx.val.i & 0x3f, d);
 847                         emit_store_dst(jd, iptr, d);
 848                         break;
 849                 case ICMD_LUSHR:
 850                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 851                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 852                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 853                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 854                         M_SRL(s1, REG_ITMP2, d);
 855                         emit_store_dst(jd, iptr, d);
 856                         break;
 857
 858                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 859                 case ICMD_LAND:
 860
 861                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 862                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 863                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 864                         M_AND(s1, s2, d);
 865                         emit_store_dst(jd, iptr, d);
 866                         break;
 867
 868                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 869                                       /* sx.val.i = constant                          */
 870
 871                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 872                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 873                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535)) {
 874                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 875                                 }
 876                         /*
 877                         else if (iptr->sx.val.i == 0xffffff) {
 878                                 M_RLWINM(s1, 0, 8, 31, d);
 879                                 }
 880                         */
 881                         else {
 882                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 883                                 M_AND(s1, REG_ITMP3, d);
 884                         }
 885                         emit_store_dst(jd, iptr, d);
 886                         break;
 887
 888                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 889                                       /* sx.val.l = constant                          */
 890
 891                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 892                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 893                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 894                                 M_AND_IMM(s1, iptr->sx.val.l, d);
 895                         /*
 896                         else if (iptr->sx.val.l == 0xffffff) {
 897                                 M_RLWINM(s1, 0, 8, 31, d);
 898                                 }
 899                         */
 900                         else {
 901                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 902                                 M_AND(s1, REG_ITMP3, d);
 903                         }
 904                         emit_store_dst(jd, iptr, d);
 905                         break;
 906
 907                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 908                                       /* sx.val.i = constant                             */
 909                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 910                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 911 #if 0
 912                         /* fast division, result in REG_ITMP3) */
 913                         M_SRA_IMM(s1, iptr->sx.val.i, REG_ITMP3);
 914                         M_ADDZE(REG_ITMP3, REG_ITMP3);
 915
 916                         M_SUB(s1, REG_ITMP3, d);
 917                         M_EXTSW(d, d);
 918                         emit_store_dst(jd, iptr, d);
 919                         break;
 920 #else
 921
 922                         M_MOV(s1, REG_ITMP2);
 923                         M_CMPI(s1, 0);
 924                         M_BGE(1 + 2*(iptr->sx.val.i >= 32768));
 925                         if (iptr->sx.val.i >= 32768) {
 926                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 927                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 928                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 929                         } else {
 930                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 931                         }
 932                         {
 933                                 int b=0, m = iptr->sx.val.i;
 934                                 while (m >>= 1)
 935                                         ++b;
 936                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 937                         }
 938                         M_SUB(s1, REG_ITMP2, d);
 939                         M_EXTSW(d, d);
 940                         emit_store_dst(jd, iptr, d);
 941                         break;
 942 #endif
 943
 944                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 945                 case ICMD_LOR:
 946
 947                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 948                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 949                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 950                         M_OR(s1, s2, d);
 951                         emit_store_dst(jd, iptr, d);
 952                         break;
 953
 954                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
 955                                       /* sx.val.i = constant                          */
 956
 957                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 958                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 959                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 960                                 M_OR_IMM(s1, iptr->sx.val.i, d);
 961                         else {
 962                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 963                                 M_OR(s1, REG_ITMP3, d);
 964                         }
 965                         emit_store_dst(jd, iptr, d);
 966                         break;
 967
 968                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
 969                                       /* sx.val.l = constant                          */
 970
 971                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 972                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 973                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 974                                 M_OR_IMM(s1, iptr->sx.val.l, d);
 975                         else {
 976                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 977                                 M_OR(s1, REG_ITMP3, d);
 978                         }
 979                         emit_store_dst(jd, iptr, d);
 980                         break;
 981
 982
 983                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
 984                 case ICMD_LXOR:
 985
 986                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 987                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 988                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 989                         M_XOR(s1, s2, d);
 990                         emit_store_dst(jd, iptr, d);
 991                         break;
 992
 993                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
 994                                       /* sx.val.i = constant                          */
 995
 996                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 997                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 998                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 999                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1000                         else {
1001                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1002                                 M_XOR(s1, REG_ITMP3, d);
1003                         }
1004                         emit_store_dst(jd, iptr, d);
1005                         break;
1006
1007                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1008                                       /* sx.val.l = constant                          */
1009
1010                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1011                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1012                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
1013                                 M_XOR_IMM(s1, iptr->sx.val.l, d);
1014                         else {
1015                                 LCONST(REG_ITMP3, iptr->sx.val.l);
1016                                 M_XOR(s1, REG_ITMP3, d);
1017                         }
1018                         emit_store_dst(jd, iptr, d);
1019                         break;
1020
1021                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1022
1023                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1024                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1025                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
1026                         /* XXX implement me!!! */
1027                         vm_abort("codegen: implement ICMD_LCMP!");
1028                         emit_store_dst(jd, iptr, d);
1029                         break;
1030                         break;
1031
1032
1033                 /* floating operations ************************************************/
1034
1035                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1036
1037                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1038                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1039                         M_FMOVN(s1, d);
1040                         emit_store_dst(jd, iptr, d);
1041                         break;
1042
1043                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1044
1045                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1046                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1047                         M_FMOVN(s1, d);
1048                         emit_store_dst(jd, iptr, d);
1049                         break;
1050
1051                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1052
1053                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1054                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1055                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1056                         M_FADD(s1, s2, d);
1057                         emit_store_dst(jd, iptr, d);
1058                         break;
1059
1060                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1061
1062                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1063                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1064                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1065                         M_DADD(s1, s2, d);
1066                         emit_store_dst(jd, iptr, d);
1067                         break;
1068
1069                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1070
1071                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1072                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1073                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1074                         M_FSUB(s1, s2, d);
1075                         emit_store_dst(jd, iptr, d);
1076                         break;
1077
1078                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1079
1080                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1081                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1082                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1083                         M_DSUB(s1, s2, d);
1084                         emit_store_dst(jd, iptr, d);
1085                         break;
1086
1087                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1088
1089                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1090                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1091                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1092                         M_FMUL(s1, s2, d);
1093                         emit_store_dst(jd, iptr, d);
1094                         break;
1095
1096                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1097
1098                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1099                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1100                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1101                         M_DMUL(s1, s2, d);
1102                         emit_store_dst(jd, iptr, d);
1103                         break;
1104
1105                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1106
1107                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1108                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1109                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1110                         M_FDIV(s1, s2, d);
1111                         emit_store_dst(jd, iptr, d);
1112                         break;
1113
1114                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1115
1116                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1117                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1118                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1119                         M_DDIV(s1, s2, d);
1120                         emit_store_dst(jd, iptr, d);
1121                         break;
1122
1123                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1124                 case ICMD_D2I:
1125
1126                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1127                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1128                         M_CLR(d);
1129                         disp = dseg_add_float(cd, 0.0);
1130                         M_FLD(REG_FTMP2, REG_PV, disp);
1131                         M_FCMPU(s1, REG_FTMP2);
1132                         M_BNAN(4);
1133                         disp = dseg_add_unique_s4(cd, 0);
1134                         M_CVTDL_C(s1, REG_FTMP1);
1135                         M_LDA(REG_ITMP1, REG_PV, disp);
1136                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1137                         M_ILD(d, REG_PV, disp);
1138                         emit_store_dst(jd, iptr, d);
1139                         break;
1140
1141                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1142
1143                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1144                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1145                         M_FLTMOVE(s1, d);
1146                         emit_store_dst(jd, iptr, d);
1147                         break;
1148
1149                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1150
1151                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1152                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1153                         M_CVTDF(s1, d);
1154                         emit_store_dst(jd, iptr, d);
1155                         break;
1156
1157                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1158                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1159
1160
1161                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1162                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1163                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1164                         M_FCMPU(s2, s1);
1165                         M_IADD_IMM(REG_ZERO, -1, d);
1166                         M_BNAN(4);
1167                         M_BGT(3);
1168                         M_IADD_IMM(REG_ZERO, 0, d);
1169                         M_BGE(1);
1170                         M_IADD_IMM(REG_ZERO, 1, d);
1171                         emit_store_dst(jd, iptr, d);
1172                         break;
1173
1174                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1175                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1176
1177                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1178                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1179                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1180                         M_FCMPU(s1, s2);
1181                         M_IADD_IMM(REG_ZERO, 1, d);
1182                         M_BNAN(4);
1183                         M_BGT(3);
1184                         M_IADD_IMM(REG_ZERO, 0, d);
1185                         M_BGE(1);
1186                         M_IADD_IMM(REG_ZERO, -1, d);
1187                         emit_store_dst(jd, iptr, d);
1188                         break;
1189
1190                 case ICMD_IF_FCMPEQ:    /* ..., value, value ==> ...                  */
1191                 case ICMD_IF_DCMPEQ:
1192
1193                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1194                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1195                         M_FCMPU(s1, s2);
1196                         M_BNAN(1);
1197                         emit_beq(cd, iptr->dst.block);
1198                         break;
1199
1200                 case ICMD_IF_FCMPNE:    /* ..., value, value ==> ...                  */
1201                 case ICMD_IF_DCMPNE:
1202
1203                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1204                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1205                         M_FCMPU(s1, s2);
1206                         emit_bnan(cd, iptr->dst.block);
1207                         emit_bne(cd, iptr->dst.block);
1208                         break;
1209
1210
1211                 case ICMD_IF_FCMPL_LT:  /* ..., value, value ==> ...                  */
1212                 case ICMD_IF_DCMPL_LT:
1213
1214                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1215                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1216                         M_FCMPU(s1, s2);
1217                         emit_bnan(cd, iptr->dst.block);
1218                         emit_blt(cd, iptr->dst.block);
1219                         break;
1220
1221                 case ICMD_IF_FCMPL_GT:  /* ..., value, value ==> ...                  */
1222                 case ICMD_IF_DCMPL_GT:
1223
1224                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1225                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1226                         M_FCMPU(s1, s2);
1227                         M_BNAN(1);
1228                         emit_bgt(cd, iptr->dst.block);
1229                         break;
1230
1231                 case ICMD_IF_FCMPL_LE:  /* ..., value, value ==> ...                  */
1232                 case ICMD_IF_DCMPL_LE:
1233
1234                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1235                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1236                         M_FCMPU(s1, s2);
1237                         emit_bnan(cd, iptr->dst.block);
1238                         emit_ble(cd, iptr->dst.block);
1239                         break;
1240
1241                 case ICMD_IF_FCMPL_GE:  /* ..., value, value ==> ...                  */
1242                 case ICMD_IF_DCMPL_GE:
1243
1244                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1245                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1246                         M_FCMPU(s1, s2);
1247                         M_BNAN(1);
1248                         emit_bge(cd, iptr->dst.block);
1249                         break;
1250
1251                 case ICMD_IF_FCMPG_LT:  /* ..., value, value ==> ...                  */
1252                 case ICMD_IF_DCMPG_LT:
1253
1254                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1255                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1256                         M_FCMPU(s1, s2);
1257                         M_BNAN(1);
1258                         emit_blt(cd, iptr->dst.block);
1259                         break;
1260
1261                 case ICMD_IF_FCMPG_GT:  /* ..., value, value ==> ...                  */
1262                 case ICMD_IF_DCMPG_GT:
1263
1264                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1265                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1266                         M_FCMPU(s1, s2);
1267                         emit_bnan(cd, iptr->dst.block);
1268                         emit_bgt(cd, iptr->dst.block);
1269                         break;
1270
1271                 case ICMD_IF_FCMPG_LE:  /* ..., value, value ==> ...                  */
1272                 case ICMD_IF_DCMPG_LE:
1273
1274                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1275                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1276                         M_FCMPU(s1, s2);
1277                         M_BNAN(1);
1278                         emit_ble(cd, iptr->dst.block);
1279                         break;
1280
1281                 case ICMD_IF_FCMPG_GE:  /* ..., value, value ==> ...                  */
1282                 case ICMD_IF_DCMPG_GE:
1283
1284                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1285                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1286                         M_FCMPU(s1, s2);
1287                         emit_bnan(cd, iptr->dst.block);
1288                         emit_bge(cd, iptr->dst.block);
1289                         break;
1290
1291
1292                 /* memory operations **************************************************/
1293
1294                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1295
1296                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1297                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1298                         emit_nullpointer_check(cd, iptr, s1);
1299                         M_ILD(d, s1, OFFSET(java_arrayheader, size));
1300                         emit_store_dst(jd, iptr, d);
1301                         break;
1302
1303                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1304
1305                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1306                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1307                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1308                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1309                         M_IADD_IMM(s2, OFFSET(java_bytearray, data[0]), REG_ITMP2);
1310                         /* implicit null-pointer check */
1311                         M_LBZX(d, s1, REG_ITMP2);
1312                         M_BSEXT(d, d);
1313                         emit_store_dst(jd, iptr, d);
1314                         break;
1315
1316                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1317
1318                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1319                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1320                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1321                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1322                         M_SLL_IMM(s2, 1, REG_ITMP2);
1323                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray, data[0]), REG_ITMP2);
1324                         /* implicit null-pointer check */
1325                         M_LHZX(d, s1, REG_ITMP2);
1326                         emit_store_dst(jd, iptr, d);
1327                         break;
1328
1329                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1330
1331                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1332                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1333                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1334                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1335                         M_SLL_IMM(s2, 1, REG_ITMP2);
1336                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray, data[0]), REG_ITMP2);
1337                         /* implicit null-pointer check */
1338                         M_LHAX(d, s1, REG_ITMP2);
1339                         emit_store_dst(jd, iptr, d);
1340                         break;
1341
1342                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1343
1344                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1345                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1346                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1347                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1348                         M_SLL_IMM(s2, 2, REG_ITMP2);
1349                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray, data[0]), REG_ITMP2);
1350                         /* implicit null-pointer check */
1351                         M_LWAX(d, s1, REG_ITMP2);
1352                         emit_store_dst(jd, iptr, d);
1353                         break;
1354
1355                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1356
1357                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1358                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1359                         d = codegen_reg_of_dst(jd, iptr, PACK_REGS(REG_ITMP2, REG_ITMP1));
1360                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1361                         M_SLL_IMM(s2, 3, REG_ITMP2);
1362                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1363                         /* implicit null-pointer check */
1364                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray, data[0]));
1365                         emit_store_dst(jd, iptr, d);
1366                         break;
1367
1368                 case ICMD_FALOAD:     /* ..., arrayref, index  ==> ..., value         */
1369
1370                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1371                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1372                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1373                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1374                         M_SLL_IMM(s2, 2, REG_ITMP2);
1375                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray, data[0]), REG_ITMP2);
1376                         /* implicit null-pointer check */
1377                         M_LFSX(d, s1, REG_ITMP2);
1378                         emit_store_dst(jd, iptr, d);
1379                         break;
1380
1381                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1382
1383                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1384                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1385                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1386                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1387                         M_SLL_IMM(s2, 3, REG_ITMP2);
1388                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray, data[0]), REG_ITMP2);
1389                         /* implicit null-pointer check */
1390                         M_LFDX(d, s1, REG_ITMP2);
1391                         emit_store_dst(jd, iptr, d);
1392                         break;
1393
1394                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1395
1396                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1397                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1398                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1399                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1400                         M_SLL_IMM(s2, 3, REG_ITMP2);
1401                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray, data[0]), REG_ITMP2);
1402                         /* implicit null-pointer check */
1403                         M_ALDX(d, s1, REG_ITMP2);
1404                         emit_store_dst(jd, iptr, d);
1405                         break;
1406
1407
1408                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1409
1410                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1411                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1412                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1413                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1414                         M_IADD_IMM(s2, OFFSET(java_bytearray, data[0]), REG_ITMP2);
1415                         /* implicit null-pointer check */
1416                         M_STBX(s3, s1, REG_ITMP2);
1417                         break;
1418
1419                 case ICMD_CASTORE:    /* ..., 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(jd, iptr, REG_ITMP3);
1425                         M_SLL_IMM(s2, 1, REG_ITMP2);
1426                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray, data[0]), REG_ITMP2);
1427                         /* implicit null-pointer check */
1428                         M_STHX(s3, s1, REG_ITMP2);
1429                         break;
1430
1431                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1432
1433                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1434                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1435                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1436                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1437                         M_SLL_IMM(s2, 1, REG_ITMP2);
1438                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray, data[0]), REG_ITMP2);
1439                         M_STHX(s3, s1, REG_ITMP2);
1440                         break;
1441
1442                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1443
1444                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1445                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1446                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1447                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1448                         M_SLL_IMM(s2, 2, REG_ITMP2);
1449                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray, data[0]), REG_ITMP2);
1450                         /* implicit null-pointer check */
1451                         M_STWX(s3, s1, REG_ITMP2);
1452                         break;
1453
1454                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1455
1456                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1457                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1458                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1459                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1460                         M_SLL_IMM(s2, 3, REG_ITMP2);
1461                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray, data[0]), REG_ITMP2);
1462                         /* implicit null-pointer check */
1463                         M_LSTX(s3, s1, REG_ITMP2);
1464                         break;
1465
1466                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1467
1468                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1469                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1470                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1471                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1472                         M_SLL_IMM(s2, 2, REG_ITMP2);
1473                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray, data[0]), REG_ITMP2);
1474                         /* implicit null-pointer check */
1475                         M_STFSX(s3, s1, REG_ITMP2);
1476                         break;
1477
1478                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1479
1480                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1481                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1482                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1483                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1484                         M_SLL_IMM(s2, 3, REG_ITMP2);
1485                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray, data[0]), REG_ITMP2);
1486                         /* implicit null-pointer check */
1487                         M_STFDX(s3, s1, REG_ITMP2);
1488                         break;
1489
1490                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1491
1492                         s1 = emit_load_s1(jd, iptr, REG_A0);
1493                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1494                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1495                         s3 = emit_load_s3(jd, iptr, REG_A1);
1496
1497                         disp = dseg_add_functionptr(cd, BUILTIN_canstore);
1498                         M_ALD(REG_ITMP3, REG_PV, disp);
1499                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1500                         M_MTCTR(REG_ITMP3);
1501
1502                         M_INTMOVE(s1, REG_A0);
1503                         M_INTMOVE(s3, REG_A1);
1504
1505                         M_JSR;
1506                         emit_exception_check(cd, iptr);
1507
1508                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1509                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1510                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1511                         M_SLL_IMM(s2, 3, REG_ITMP2);
1512                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray, data[0]), REG_ITMP2);
1513                         /* implicit null-pointer check */
1514                         M_ASTX(s3, s1, REG_ITMP2);
1515                         break;
1516
1517
1518                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1519
1520                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1521                                 uf = iptr->sx.s23.s3.uf;
1522
1523                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1524                                 disp = dseg_add_unique_address(cd, NULL);
1525
1526                                 codegen_addpatchref(cd, PATCHER_get_putstatic,
1527                                                                         iptr->sx.s23.s3.uf, disp);
1528
1529                         } else {
1530                                 fieldinfo *fi = iptr->sx.s23.s3.fmiref->p.field;
1531
1532                                 fieldtype = fi->type;
1533                                 disp = dseg_add_address(cd, &(fi->value));
1534
1535                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class)) {
1536                                         codegen_addpatchref(cd, PATCHER_clinit, fi->class, disp);
1537                                 }
1538                         }
1539
1540                         M_ALD(REG_ITMP1, REG_PV, disp);
1541                         switch (fieldtype) {
1542                         case TYPE_INT:
1543                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1544                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1545                                 break;
1546                         case TYPE_LNG:
1547                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1548                                 M_LLD(d, REG_ITMP1, 0);
1549                                 break;
1550                         case TYPE_ADR:
1551                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1552                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1553                                 break;
1554                         case TYPE_FLT:
1555                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1556                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1557                                 break;
1558                         case TYPE_DBL:
1559                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1560                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1561                                 break;
1562                         }
1563                         emit_store_dst(jd, iptr, d);
1564                         break;
1565
1566                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1567
1568
1569                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1570                                 uf = iptr->sx.s23.s3.uf;
1571
1572                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1573                                 disp = dseg_add_unique_address(cd, NULL);
1574
1575                                 codegen_addpatchref(cd, PATCHER_get_putstatic,
1576                                                                         iptr->sx.s23.s3.uf, disp);
1577                         } else {
1578                                 fieldinfo *fi = iptr->sx.s23.s3.fmiref->p.field;
1579
1580                                 fieldtype = fi->type;
1581                                 disp = dseg_add_address(cd, &(fi->value));
1582
1583                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class)) {
1584                                         codegen_addpatchref(cd, PATCHER_clinit, fi->class, disp);
1585                                 }
1586                         }
1587
1588                         M_ALD(REG_ITMP1, REG_PV, disp);
1589                         switch (fieldtype) {
1590                         case TYPE_INT:
1591                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1592                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1593                                 break;
1594                         case TYPE_LNG:
1595                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1596                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1597                                 break;
1598                         case TYPE_ADR:
1599                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1600                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1601                                 break;
1602                         case TYPE_FLT:
1603                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1604                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1605                                 break;
1606                         case TYPE_DBL:
1607                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1608                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1609                                 break;
1610                         }
1611                         break;
1612
1613
1614                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1615
1616                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1617
1618                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1619                                 uf = iptr->sx.s23.s3.uf;
1620                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1621                                 disp = 0;
1622
1623                                 codegen_addpatchref(cd, PATCHER_get_putfield, uf, 0);
1624                         } else {
1625                                 fi = iptr->sx.s23.s3.fmiref->p.field;
1626                                 fieldtype = fi->type;
1627                                 disp = fi->offset;
1628                         }
1629
1630                         /* implicit null-pointer check */
1631                         switch (fieldtype) {
1632                         case TYPE_INT:
1633                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1634                                 M_ILD(d, s1, disp);
1635                                 break;
1636                         case TYPE_LNG:
1637                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1638                                 M_LLD(d, s1, disp);
1639                                 break;
1640                         case TYPE_ADR:
1641                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1642                                 M_ALD(d, s1, disp);
1643                                 break;
1644                         case TYPE_FLT:
1645                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1646                                 M_FLD(d, s1, disp);
1647                                 break;
1648                         case TYPE_DBL:
1649                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1650                                 M_DLD(d, s1, disp);
1651                                 break;
1652                         }
1653                         emit_store_dst(jd, iptr, d);
1654                         break;
1655
1656                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1657
1658                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1659
1660                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1661                                 uf        = iptr->sx.s23.s3.uf;
1662                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1663                                 disp      = 0;
1664                         }
1665                         else {
1666                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1667                                 fieldtype = fi->type;
1668                                 disp      = fi->offset;
1669                         }
1670
1671                         if (IS_INT_LNG_TYPE(fieldtype)) {
1672                                 s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1673                         }
1674                         else
1675                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1676
1677                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1678                                 codegen_addpatchref(cd, PATCHER_get_putfield, uf, 0);
1679                         }
1680
1681
1682                         /* implicit null-pointer check */
1683                         switch (fieldtype) {
1684                         case TYPE_INT:
1685                                 M_IST(s2, s1, disp);
1686                                 break;
1687                         case TYPE_LNG:
1688                                 M_LST(s2, s1, disp);
1689                                 break;
1690                         case TYPE_ADR:
1691                                 M_AST(s2, s1, disp);
1692                                 break;
1693                         case TYPE_FLT:
1694                                 M_FST(s2, s1, disp);
1695                                 break;
1696                         case TYPE_DBL:
1697                                 M_DST(s2, s1, disp);
1698                                 break;
1699                         }
1700                         break;
1701
1702
1703                 /* branch operations **************************************************/
1704
1705                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1706
1707                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1708                         M_LNGMOVE(s1, REG_ITMP1_XPTR);
1709
1710 #ifdef ENABLE_VERIFIER
1711                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1712                                 codegen_addpatchref(cd, PATCHER_athrow_areturn,
1713                                                                         iptr->sx.s23.s2.uc, 0);
1714                         }
1715 #endif /* ENABLE_VERIFIER */
1716
1717                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1718                         M_ALD(REG_ITMP2, REG_PV, disp);
1719                         M_MTCTR(REG_ITMP2);
1720
1721                         if (jd->isleafmethod) M_MFLR(REG_ITMP3);         /* save LR        */
1722                         M_BL(0);                                        /* get current PC */
1723                         M_MFLR(REG_ITMP2_XPC);
1724                         if (jd->isleafmethod) M_MTLR(REG_ITMP3);         /* restore LR     */
1725                         M_RTS;                                          /* jump to CTR    */
1726
1727                         ALIGNCODENOP;
1728                         break;
1729
1730                 case ICMD_GOTO:         /* ... ==> ...                                */
1731                 case ICMD_RET:          /* ... ==> ...                                */
1732
1733                         emit_br(cd, iptr->dst.block);
1734                         ALIGNCODENOP;
1735                         break;
1736
1737                 case ICMD_JSR:          /* ... ==> ...                                */
1738
1739                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1740                         ALIGNCODENOP;
1741                         break;
1742
1743                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1744
1745                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1746                         M_TST(s1);
1747                         emit_beq(cd, iptr->dst.block);
1748                         break;
1749
1750                 case ICMD_IFNONNULL:    /* ..., value ==> ...                         */
1751
1752                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1753                         M_TST(s1);
1754                         emit_bne(cd, iptr->dst.block);
1755                         break;
1756
1757                 case ICMD_IFLT:
1758                 case ICMD_IFLE:
1759                 case ICMD_IFNE:
1760                 case ICMD_IFGT:
1761                 case ICMD_IFGE:
1762                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1763
1764                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1765                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1766                                 M_CMPI(s1, iptr->sx.val.i);
1767                         else {
1768                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1769                                 M_CMP(s1, REG_ITMP2);
1770                         }
1771                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1772                         break;
1773
1774                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1775                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1776                         LCONST(REG_ITMP2, iptr->sx.val.l);
1777                         M_CMP(s1, REG_ITMP2);
1778                         emit_beq(cd, iptr->dst.block);
1779                         break;
1780                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1781                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1782                         LCONST(REG_ITMP2, iptr->sx.val.l);
1783                         M_CMP(s1, REG_ITMP2);
1784                         emit_blt(cd, iptr->dst.block);
1785                         break;
1786                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1787                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1788                         LCONST(REG_ITMP2, iptr->sx.val.l);
1789                         M_CMP(s1, REG_ITMP2);
1790                         emit_ble(cd, iptr->dst.block);
1791                         break;
1792
1793                 case ICMD_IF_LNE:       /* ..., value ==> ... */
1794                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1795                         LCONST(REG_ITMP2, iptr->sx.val.l);
1796                         M_CMP(s1, REG_ITMP2);
1797                         emit_bne(cd, iptr->dst.block);
1798                         break;
1799                 case ICMD_IF_LGE:       /* ..., value ==> ... */
1800                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1801                         LCONST(REG_ITMP2, iptr->sx.val.l);
1802                         M_CMP(s1, REG_ITMP2);
1803                         emit_bge(cd, iptr->dst.block);
1804                         break;
1805                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1806                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1807                         LCONST(REG_ITMP2, iptr->sx.val.l);
1808                         M_CMP(s1, REG_ITMP2);
1809                         emit_bgt(cd, iptr->dst.block);
1810                         break;
1811                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
1812                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
1813                 case ICMD_IF_LCMPEQ:
1814
1815                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1816                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1817                         M_CMP(s1, s2);
1818                         emit_beq(cd, iptr->dst.block);
1819                         break;
1820
1821                 case ICMD_IF_ICMPNE:    /* ..., value, value ==> ...                  */
1822                 case ICMD_IF_ACMPNE:    /* op1 = target JavaVM pc                     */
1823                 case ICMD_IF_LCMPNE:
1824
1825                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1826                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1827                         M_CMP(s1, s2);
1828                         emit_bne(cd, iptr->dst.block);
1829                         break;
1830
1831
1832                 case ICMD_IF_ICMPLT:    /* ..., value, value ==> ...                  */
1833                 case ICMD_IF_LCMPLT:
1834
1835                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1836                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1837                         M_CMP(s1, s2);
1838                         emit_blt(cd, iptr->dst.block);
1839                         break;
1840
1841                 case ICMD_IF_ICMPGT:    /* ..., value, value ==> ...                  */
1842                 case ICMD_IF_LCMPGT:
1843
1844                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1845                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1846                         M_CMP(s1, s2);
1847                         emit_bgt(cd, iptr->dst.block);
1848                         break;
1849
1850                 case ICMD_IF_ICMPLE:    /* ..., value, value ==> ...                  */
1851                 case ICMD_IF_LCMPLE:
1852
1853                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1854                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1855                         M_CMP(s1, s2);
1856                         emit_ble(cd, iptr->dst.block);
1857                         break;
1858
1859                 case ICMD_IF_ICMPGE:    /* ..., value, value ==> ...                  */
1860                 case ICMD_IF_LCMPGE:
1861
1862                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1863                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1864                         M_CMP(s1, s2);
1865                         emit_bge(cd, iptr->dst.block);
1866                         break;
1867
1868
1869                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
1870                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
1871
1872                         REPLACEMENT_POINT_RETURN(cd, iptr);
1873                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1874                         M_LNGMOVE(s1, REG_RESULT);
1875                         goto nowperformreturn;
1876
1877                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
1878
1879                         REPLACEMENT_POINT_RETURN(cd, iptr);
1880                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1881                         M_LNGMOVE(s1, REG_RESULT);
1882
1883 #ifdef ENABLE_VERIFIER
1884                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1885                                 codegen_addpatchref(cd, PATCHER_athrow_areturn,
1886                                                                         iptr->sx.s23.s2.uc, 0);
1887                         }
1888 #endif /* ENABLE_VERIFIER */
1889
1890                         goto nowperformreturn;
1891
1892                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
1893                 case ICMD_DRETURN:
1894
1895                         REPLACEMENT_POINT_RETURN(cd, iptr);
1896                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
1897                         M_FLTMOVE(s1, REG_FRESULT);
1898                         goto nowperformreturn;
1899
1900                 case ICMD_RETURN:      /* ...  ==> ...                                */
1901
1902                         REPLACEMENT_POINT_RETURN(cd, iptr);
1903
1904 nowperformreturn:
1905                         {
1906                         s4 i, p;
1907
1908                         p = cd->stackframesize;
1909
1910                         /* call trace function */
1911
1912 #if !defined(NDEBUG)
1913                         if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
1914                                 emit_verbosecall_exit(jd);
1915                         }
1916 #endif
1917
1918 #if defined(ENABLE_THREADS)
1919                         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
1920                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
1921                                 M_ALD(REG_ITMP3, REG_PV, disp);
1922                                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1923                                 M_MTCTR(REG_ITMP3);
1924
1925                                 /* we need to save the proper return value */
1926
1927                                 switch (iptr->opc) {
1928                                 case ICMD_LRETURN:
1929                                 case ICMD_IRETURN:
1930                                 case ICMD_ARETURN:
1931                                         /* fall through */
1932                                         M_LST(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1933                                         break;
1934                                 case ICMD_FRETURN:
1935                                         M_FST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1936                                         break;
1937                                 case ICMD_DRETURN:
1938                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1939                                         break;
1940                                 }
1941
1942                                 M_ALD(REG_A0, REG_SP, rd->memuse * 8);
1943                                 M_JSR;
1944
1945                                 /* and now restore the proper return value */
1946
1947                                 switch (iptr->opc) {
1948                                 case ICMD_LRETURN:
1949                                 case ICMD_IRETURN:
1950                                 case ICMD_ARETURN:
1951                                         /* fall through */
1952                                         M_LLD(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1953                                         break;
1954                                 case ICMD_FRETURN:
1955                                         M_FLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1956                                         break;
1957                                 case ICMD_DRETURN:
1958                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1959                                         break;
1960                                 }
1961                         }
1962 #endif
1963
1964                         /* restore return address                                         */
1965
1966                         if (!jd->isleafmethod) {
1967                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
1968                                    may have a displacement overflow. */
1969
1970                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
1971                                 M_MTLR(REG_ITMP1);
1972                         }
1973
1974                         /* restore saved registers                                        */
1975
1976                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
1977                                 p--; M_LLD(rd->savintregs[i], REG_SP, p * 8);
1978                         }
1979                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
1980                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
1981                         }
1982
1983                         /* deallocate stack                                               */
1984
1985                         if (cd->stackframesize)
1986                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
1987
1988                         M_RET;
1989                         ALIGNCODENOP;
1990                         }
1991                         break;
1992
1993
1994                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
1995                         {
1996                         s4 i, l;
1997                         branch_target_t *table;
1998
1999                         table = iptr->dst.table;
2000
2001                         l = iptr->sx.s23.s2.tablelow;
2002                         i = iptr->sx.s23.s3.tablehigh;
2003
2004                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2005                         if (l == 0) {
2006                                 M_INTMOVE(s1, REG_ITMP1);
2007                         } else if (l <= 32768) {
2008                                 M_LDA(REG_ITMP1, s1, -l);
2009                         } else {
2010                                 ICONST(REG_ITMP2, l);
2011                                 M_SUB(s1, REG_ITMP2, REG_ITMP1);
2012                         }
2013
2014                         /* number of targets */
2015                         i = i - l + 1;
2016
2017                         /* range check */
2018
2019                         M_CMPUI(REG_ITMP1, i - 1);
2020                         emit_bgt(cd, table[0].block);
2021
2022                         /* build jump table top down and use address of lowest entry */
2023
2024                         table += i;
2025
2026                         while (--i >= 0) {
2027                                 dseg_add_target(cd, table->block);
2028                                 --table;
2029                         }
2030
2031                         /* length of dataseg after last dseg_add_unique_target is used by load */
2032
2033                         M_SLL_IMM(REG_ITMP1, 3, REG_ITMP1);
2034                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
2035                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
2036                         M_MTCTR(REG_ITMP2);
2037                         M_RTS;
2038                         ALIGNCODENOP;
2039                         }
2040                         break;
2041
2042
2043                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
2044                         {
2045                         s4 i, val;
2046                         lookup_target_t *lookup;
2047
2048                         lookup = iptr->dst.lookup;
2049
2050                         i = iptr->sx.s23.s2.lookupcount;
2051
2052                         MCODECHECK((i<<2)+8);
2053                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2054                         while (--i >= 0) {
2055                                 val = lookup->value;
2056                                 if ((val >= -32768) && (val <= 32767)) {
2057                                         M_CMPI(s1, val);
2058
2059                                 } else {
2060                                         a = dseg_add_s4(cd, val);
2061                                         M_ILD(REG_ITMP2, REG_PV, a);
2062                                         M_CMP(s1, REG_ITMP2);
2063                                 }
2064                                 emit_beq(cd, lookup->target.block);
2065                                 ++lookup;
2066                         }
2067
2068                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
2069
2070                         ALIGNCODENOP;
2071                         break;
2072                         }
2073
2074
2075                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2076
2077                         bte = iptr->sx.s23.s3.bte;
2078                         md = bte->md;
2079                         goto gen_method;
2080
2081                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2082                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2083                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2084                 case ICMD_INVOKEINTERFACE:
2085
2086                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2087
2088                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2089                                 lm = NULL;
2090                                 um = iptr->sx.s23.s3.um;
2091                                 md = um->methodref->parseddesc.md;
2092                         }
2093                         else {
2094                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2095                                 um = NULL;
2096                                 md = lm->parseddesc;
2097                         }
2098
2099 gen_method:
2100                         s3 = md->paramcount;
2101
2102                         MCODECHECK((s3 << 1) + 64);
2103
2104                         /* copy arguments to registers or stack location */
2105
2106                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2107                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2108                                 d   = md->params[s3].regoff;
2109
2110                                 if (var->flags & PREALLOC)
2111                                         continue;
2112
2113                                 if (IS_INT_LNG_TYPE(var->type)) {
2114                                         if (!md->params[s3].inmemory) {
2115                                                 s1 = emit_load(jd, iptr, var, d);
2116                                                 M_LNGMOVE(s1, d);
2117                                         }
2118                                         else {
2119                                                 s1 = emit_load(jd, iptr, var, REG_ITMP1);
2120                                                 M_LST(s1, REG_SP, d * 8);
2121                                         }
2122                                 }
2123                                 else {
2124                                         if (!md->params[s3].inmemory) {
2125                                                 s1 = emit_load(jd, iptr, var, d);
2126                                                 M_FLTMOVE(s1, d);
2127                                         }
2128                                         else {
2129                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2130                                                 M_DST(s1, REG_SP, d * 8);
2131                                         }
2132                                 }
2133                         }
2134
2135                         switch (iptr->opc) {
2136                         case ICMD_BUILTIN:
2137                                 disp = dseg_add_functionptr(cd, bte->fp);
2138                                 M_ALD(REG_PV, REG_PV, disp);
2139                                 M_ALD(REG_PV, REG_PV, 0);       /* TOC */
2140
2141                                 /* generate the actual call */
2142                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2143                                 M_MTCTR(REG_PV);
2144                                 M_JSR;
2145                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2146                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2147                                 M_MFLR(REG_ITMP1);
2148                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2149
2150                                 emit_exception_check(cd, iptr);
2151                                 break;
2152
2153
2154                         case ICMD_INVOKESPECIAL:
2155                                 emit_nullpointer_check(cd, iptr, REG_A0);
2156                                 /* fall through */
2157
2158                         case ICMD_INVOKESTATIC:
2159                                 if (lm == NULL) {
2160                                         disp = dseg_add_unique_address(cd, um);
2161
2162                                         codegen_addpatchref(cd, PATCHER_invokestatic_special,
2163                                                                                 um, disp);
2164                                 } else {
2165                                         disp = dseg_add_address(cd, lm->stubroutine);
2166                                 }
2167                                 M_ALD(REG_PV, REG_PV, disp);
2168
2169                                 /* generate the actual call */
2170
2171                                 M_MTCTR(REG_PV);
2172                                 M_JSR;
2173                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2174                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2175                                 M_MFLR(REG_ITMP1);
2176                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2177
2178                                 break;
2179                         case ICMD_INVOKEVIRTUAL:
2180                                 if (lm == NULL) {
2181                                         codegen_addpatchref(cd, PATCHER_invokevirtual, um, 0);
2182                                         s1 = 0;
2183                                 } else {
2184                                         s1 = OFFSET(vftbl_t, table[0]) +
2185                                                 sizeof(methodptr) * lm->vftblindex;
2186                                 }
2187
2188                                 /* implicit null-pointer check */
2189                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_objectheader, vftbl));
2190                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2191
2192                                 /* generate the actual call */
2193
2194                                 M_MTCTR(REG_PV);
2195                                 M_JSR;
2196                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2197                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2198                                 M_MFLR(REG_ITMP1);
2199                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2200                                 break;
2201
2202                         case ICMD_INVOKEINTERFACE:
2203                                 if (lm == NULL) {
2204                                         codegen_addpatchref(cd, PATCHER_invokeinterface, um, 0);
2205
2206                                         s1 = 0;
2207                                         s2 = 0;
2208
2209                                 } else {
2210                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2211                                                 sizeof(methodptr*) * lm->class->index;
2212
2213                                         s2 = sizeof(methodptr) * (lm - lm->class->methods);
2214                                 }
2215
2216                                 /* implicit null-pointer check */
2217                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_objectheader, vftbl));
2218                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2219                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2220
2221                                 /* generate the actual call */
2222
2223                                 M_MTCTR(REG_PV);
2224                                 M_JSR;
2225                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2226                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2227                                 M_MFLR(REG_ITMP1);
2228                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2229
2230                                 break;
2231                         }
2232                         /* store return value */
2233
2234                         d = md->returntype.type;
2235
2236                         if (d != TYPE_VOID) {
2237                                 if (IS_INT_LNG_TYPE(d)) {
2238                                         s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2239                                         M_MOV(REG_RESULT, s1);
2240                                 }
2241                                 else {
2242                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2243                                         M_FLTMOVE(REG_FRESULT, s1);
2244                                 }
2245                                 emit_store_dst(jd, iptr, s1);
2246                         }
2247                         break;
2248
2249                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2250                                       /* val.a: (classinfo*) superclass               */
2251
2252                         /*  superclass is an interface:
2253                          *
2254                          *  OK if ((sub == NULL) ||
2255                          *         (sub->vftbl->interfacetablelength > super->index) &&
2256                          *         (sub->vftbl->interfacetable[-super->index] != NULL));
2257                          *
2258                          *  superclass is a class:
2259                          *
2260                          *  OK if ((sub == NULL) || (0
2261                          *         <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2262                          *         super->vftbl->diffvall));
2263                          */
2264
2265                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2266                                 /* object type cast-check */
2267
2268                                 classinfo *super;
2269                                 s4         superindex;
2270
2271                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2272                                         super = NULL;
2273                                         superindex = 0;
2274                                 } else {
2275                                         super = iptr->sx.s23.s3.c.cls;
2276                                         superindex = super->index;
2277                                 }
2278
2279 #if defined(ENABLE_THREADS)
2280                                 codegen_threadcritrestart(cd, cd->mcodeptr - cd->mcodebase);
2281 #endif
2282                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2283
2284                                 /* calculate interface checkcast code size */
2285
2286                                 s2 = 9;
2287 #if defined(SOFTEX)
2288                                 s2 += CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd) ? 2 : 0;
2289 #endif
2290                                 if (super == NULL)
2291                                         s2 += (opt_shownops ? 1 : 0);
2292
2293                                 /* calculate class checkcast code size */
2294
2295                                 s3 = 10 + (s1 == REG_ITMP1);
2296 #if defined(SOFTEX)
2297                                 s3 += CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd) ? 1 : 0;
2298 #endif
2299                                 if (super == NULL)
2300                                         s3 += (opt_shownops ? 1 : 0);
2301
2302                                 /* if class is not resolved, check which code to call */
2303
2304                                 if (super == NULL) {
2305                                         M_TST(s1);
2306                                         M_BEQ(3 + (opt_shownops ? 1 : 0) + s2 + 1 + s3);
2307
2308                                         disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2309
2310                                         codegen_addpatchref(cd,
2311                                                                                 PATCHER_checkcast_instanceof_flags,
2312                                                                                 iptr->sx.s23.s3.c.ref,
2313                                                                                 disp);
2314
2315                                         M_ILD(REG_ITMP2, REG_PV, disp);
2316                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2317                                         M_BEQ(s2 + 1);
2318                                 }
2319
2320                                 /* interface checkcast code */
2321
2322                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2323                                         if (super == NULL) {
2324                                                 codegen_addpatchref(cd,
2325                                                                                         PATCHER_checkcast_interface,
2326                                                                                         iptr->sx.s23.s3.c.ref,
2327                                                                                         0);
2328                                         } else {
2329                                                 M_TST(s1);
2330                                                 M_BEQ(s2);
2331                                         }
2332
2333                                         M_ALD(REG_ITMP2, s1, OFFSET(java_objectheader, vftbl));
2334                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2335                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2336                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2337                                         M_ALD(REG_ITMP3, REG_ITMP2,
2338                                                   OFFSET(vftbl_t, interfacetable[0]) -
2339                                                   superindex * sizeof(methodptr*));
2340                                         M_TST(REG_ITMP3);
2341                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2342
2343                                         if (!super)
2344                                                 M_BR(s3);
2345                                 }
2346
2347                                 /* class checkcast code */
2348
2349                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2350                                         if (super == NULL) {
2351                                                 disp = dseg_add_unique_address(cd, NULL);
2352                                                 codegen_addpatchref(cd, PATCHER_checkcast_class,
2353                                                                                         iptr->sx.s23.s3.c.ref,
2354                                                                                         disp);
2355                                         } else {
2356                                                 disp = dseg_add_address(cd, super->vftbl);
2357                                                 M_TST(s1);
2358                                                 M_BEQ(s3);
2359                                         }
2360
2361                                         M_ALD(REG_ITMP2, s1, OFFSET(java_objectheader, vftbl));
2362 #if defined(ENABLE_THREADS)
2363                                         codegen_threadcritstart(cd, cd->mcodeptr - cd->mcodebase);
2364 #endif
2365                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2366                                         M_ALD(REG_ITMP2, REG_PV, disp);
2367                                         if (s1 != REG_ITMP1) {
2368                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2369                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2370 #if defined(ENABLE_THREADS)
2371                                                 codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase);
2372 #endif
2373                                                 M_SUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2374                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2375                                         } else {
2376                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2377                                                 M_SUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2378                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2379                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2380                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2381 #if defined(ENABLE_THREADS)
2382                                                 codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase);
2383 #endif
2384                                         }
2385                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2386                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2387                                 }
2388                                 d = codegen_reg_of_dst(jd, iptr, s1);
2389
2390                         } else {
2391                                 /* array type cast-check */
2392
2393                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2394                                 M_INTMOVE(s1, REG_A0);
2395
2396
2397                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2398                                         disp = dseg_add_unique_address(cd, NULL);
2399                                         codegen_addpatchref(cd, PATCHER_builtin_arraycheckcast,
2400                                                                                 iptr->sx.s23.s3.c.ref,
2401                                                                                 disp);
2402                                 } else {
2403                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2404                                 }
2405
2406                                 M_ALD(REG_A1, REG_PV, disp);
2407                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2408                                 M_ALD(REG_ITMP2, REG_PV, disp);
2409                                 M_ALD(REG_ITMP2, REG_ITMP2, 0); /* TOC */
2410                                 M_MTCTR(REG_ITMP2);
2411                                 M_JSR;
2412                                 M_TST(REG_RESULT);
2413                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2414
2415                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2416                                 d = codegen_reg_of_dst(jd, iptr, s1);
2417                         }
2418                         M_INTMOVE(s1, d);
2419                         emit_store_dst(jd, iptr, d);
2420                         break;
2421
2422
2423                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2424                                       /* val.a: (classinfo*) superclass               */
2425
2426                         /*  superclass is an interface:
2427                          *
2428                          *  return (sub != NULL) &&
2429                          *         (sub->vftbl->interfacetablelength > super->index) &&
2430                          *         (sub->vftbl->interfacetable[-super->index] != NULL);
2431                          *
2432                          *  superclass is a class:
2433                          *
2434                          *  return ((sub != NULL) && (0
2435                          *          <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2436                          *          super->vftbl->diffvall));
2437                          */
2438
2439                         {
2440                         classinfo *super;
2441                         vftbl_t   *supervftbl;
2442                         s4         superindex;
2443
2444                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2445                                 super = NULL;
2446                                 superindex = 0;
2447                                 supervftbl = NULL;
2448                         }
2449                         else {
2450                                 super = iptr->sx.s23.s3.c.cls;
2451                                 superindex = super->index;
2452                                 supervftbl = super->vftbl;
2453                         }
2454
2455 #if defined(ENABLE_THREADS)
2456             codegen_threadcritrestart(cd, cd->mcodeptr - cd->mcodebase);
2457 #endif
2458                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2459                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2460                         if (s1 == d) {
2461                                 M_MOV(s1, REG_ITMP1);
2462                                 s1 = REG_ITMP1;
2463                         }
2464
2465                         /* calculate interface instanceof code size */
2466
2467                         s2 = 8;
2468                         if (!super)
2469                                 s2 += (opt_shownops ? 1 : 0);
2470
2471                         /* calculate class instanceof code size */
2472
2473                         s3 = 11;
2474                         if (super == NULL)
2475                                 s3 += (opt_shownops ? 1 : 0);
2476
2477                         M_CLR(d);
2478
2479                         /* if class is not resolved, check which code to call */
2480
2481                         if (super == NULL) {
2482                                 M_TST(s1);
2483                                 M_BEQ(3 + (opt_shownops ? 1 : 0) + s2 + 1 + s3);
2484
2485                                 disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2486
2487                                 codegen_addpatchref(cd, PATCHER_checkcast_instanceof_flags,
2488                                                                         iptr->sx.s23.s3.c.ref, disp);
2489
2490                                 M_ILD(REG_ITMP3, REG_PV, disp);
2491                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2492                                 M_BEQ(s2 + 1);
2493                         }
2494
2495                         /* interface instanceof code */
2496
2497                         if (!super || (super->flags & ACC_INTERFACE)) {
2498                                 if (super) {
2499                                         M_TST(s1);
2500                                         M_BEQ(s2);
2501
2502                                 } else {
2503                                         codegen_addpatchref(cd,
2504                                                                                 PATCHER_instanceof_interface,
2505                                                                                 iptr->sx.s23.s3.c.ref, 0);
2506                                 }
2507
2508                                 M_ALD(REG_ITMP1, s1, OFFSET(java_objectheader, vftbl));
2509                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2510                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2511                                 M_BLE(4);
2512                                 M_ALD(REG_ITMP1, REG_ITMP1,
2513                                           OFFSET(vftbl_t, interfacetable[0]) -
2514                                           superindex * sizeof(methodptr*));
2515                                 M_TST(REG_ITMP1);
2516                                 M_BEQ(1);
2517                                 M_IADD_IMM(REG_ZERO, 1, d);
2518
2519                                 if (super == NULL)
2520                                         M_BR(s3);
2521                         }
2522
2523                         /* class instanceof code */
2524
2525                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2526
2527                                 if (super) {
2528                                         disp = dseg_add_address(cd, supervftbl);
2529                                         M_TST(s1);
2530                                         M_BEQ(s3);
2531
2532                                 } else {
2533                                         disp = dseg_add_unique_address(cd, NULL);
2534                                         codegen_addpatchref(cd, PATCHER_instanceof_class,
2535                                                                                 iptr->sx.s23.s3.c.ref,
2536                                                                                 disp);
2537                                 }
2538
2539                                 M_ALD(REG_ITMP1, s1, OFFSET(java_objectheader, vftbl));
2540                                 M_ALD(REG_ITMP2, REG_PV, disp);
2541 #if defined(ENABLE_THREADS)
2542                                 codegen_threadcritstart(cd, cd->mcodeptr - cd->mcodebase);
2543 #endif
2544                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2545                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2546                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2547 #if defined(ENABLE_THREADS)
2548                                 codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase);
2549 #endif
2550                                 M_SUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2551                                 M_EXTSW(REG_ITMP1, REG_ITMP1);
2552                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2553                                 M_CLR(d);
2554                                 M_BGT(1);
2555                                 M_IADD_IMM(REG_ZERO, 1, d);
2556                         }
2557                         emit_store_dst(jd, iptr, d);
2558                         }
2559                         break;
2560
2561                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2562
2563                         /* check for negative sizes and copy sizes to stack if necessary  */
2564
2565                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2566
2567                         for (s1 = iptr->s1.argcount; --s1 >= 0; ) {
2568
2569                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2570
2571                                 /* copy SAVEDVAR sizes to stack */
2572
2573                                 if (!(var->flags & PREALLOC)) {
2574                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2575 #if defined(__DARWIN__)
2576                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 8);
2577 #else
2578                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + 3) * 8);
2579 #endif
2580                                 }
2581                         }
2582
2583                         /* a0 = dimension count */
2584
2585                         ICONST(REG_A0, iptr->s1.argcount);
2586
2587                         /* is patcher function set? */
2588
2589                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2590                                 disp = dseg_add_unique_address(cd, NULL);
2591
2592                                 codegen_addpatchref(cd, PATCHER_builtin_multianewarray,
2593                                                                         iptr->sx.s23.s3.c.ref, disp);
2594                         } else {
2595                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2596                         }
2597
2598                         /* a1 = arraydescriptor */
2599
2600                         M_ALD(REG_A1, REG_PV, disp);
2601
2602                         /* a2 = pointer to dimensions = stack pointer */
2603
2604 #if defined(__DARWIN__)
2605                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 8);
2606 #else
2607                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 8);
2608 #endif
2609
2610                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2611                         M_ALD(REG_ITMP3, REG_PV, disp);
2612                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
2613                         M_MTCTR(REG_ITMP3);
2614                         M_JSR;
2615
2616                         /* check for exception before result assignment */
2617                         emit_exception_check(cd, iptr);
2618
2619                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2620                         M_INTMOVE(REG_RESULT, d);
2621                         emit_store_dst(jd, iptr, d);
2622                         break;
2623
2624                 default:
2625                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2626                                                                                    iptr->opc);
2627                         return false;
2628         } /* switch */
2629
2630         } /* for instruction */
2631
2632         } /* if (bptr -> flags >= BBREACHED) */
2633         } /* for basic block */
2634
2635         dseg_createlinenumbertable(cd);
2636
2637         /* generate stubs */
2638
2639         emit_patcher_stubs(jd);
2640         REPLACEMENT_EMIT_STUBS(jd);
2641
2642         /* everything's ok */
2643
2644         return true;
2645 }
2646
2647
2648 /* codegen_emit_stub_compiler **************************************************
2649
2650    Emits a stub routine which calls the compiler.
2651
2652 *******************************************************************************/
2653
2654 void codegen_emit_stub_compiler(jitdata *jd)
2655 {
2656         methodinfo  *m;
2657         codegendata *cd;
2658
2659         /* get required compiler data */
2660
2661         m  = jd->m;
2662         cd = jd->cd;
2663
2664         /* code for the stub */
2665
2666         M_ALD_INTERN(REG_ITMP1, REG_PV, -2 * SIZEOF_VOID_P);
2667         M_ALD_INTERN(REG_PV, REG_PV, -3 * SIZEOF_VOID_P);
2668         M_MTCTR(REG_PV);
2669         M_RTS;
2670 }
2671
2672
2673 /* codegen_emit_stub_native ****************************************************
2674
2675    Emits a stub routine which calls a native method.
2676
2677 *******************************************************************************/
2678
2679 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f)
2680 {
2681         methodinfo  *m;
2682         codeinfo    *code;
2683         codegendata *cd;
2684         methoddesc  *md;
2685         s4           nativeparams;
2686         s4           i, j;
2687         s4           t;
2688         s4           s1, s2, disp;
2689         s4           funcdisp;
2690
2691         /* get required compiler data */
2692
2693         m    = jd->m;
2694         code = jd->code;
2695         cd   = jd->cd;
2696
2697         /* set some variables */
2698
2699         md = m->parseddesc;
2700         nativeparams = (m->flags & ACC_STATIC) ? 2 : 1;
2701
2702         /* calculate stackframe size */
2703
2704         cd->stackframesize =
2705                 sizeof(stackframeinfo) / SIZEOF_VOID_P +
2706                 sizeof(localref_table) / SIZEOF_VOID_P +
2707                 4 +                            /* 4 stackframeinfo arguments (darwin)*/
2708                 nmd->paramcount  +
2709                 nmd->memuse;
2710
2711 /*      cd->stackframesize = (cd->stackframesize + 3) & ~3;*/ /* keep stack 16-byte aligned */
2712
2713         /* create method header */
2714
2715         (void) dseg_add_unique_address(cd, code);                      /* CodeinfoPointer */
2716         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8);             /* FrameSize       */
2717         (void) dseg_add_unique_s4(cd, 0);                              /* IsSync          */
2718         (void) dseg_add_unique_s4(cd, 0);                              /* IsLeaf          */
2719         (void) dseg_add_unique_s4(cd, 0);                              /* IntSave         */
2720         (void) dseg_add_unique_s4(cd, 0);                              /* FltSave         */
2721         (void) dseg_addlinenumbertablesize(cd);
2722         (void) dseg_add_unique_s4(cd, 0);                              /* ExTableSize     */
2723
2724         /* generate code */
2725
2726         M_MFLR(REG_ZERO);
2727         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
2728         M_STDU(REG_SP, REG_SP, -(cd->stackframesize * 8));
2729
2730 #if !defined(NDEBUG)
2731         if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
2732                 emit_verbosecall_enter(jd);
2733         }
2734 #endif
2735         /* get function address (this must happen before the stackframeinfo) */
2736
2737         funcdisp = dseg_add_functionptr(cd, f);
2738
2739 #if !defined(WITH_STATIC_CLASSPATH)
2740         if (f == NULL) {
2741                 codegen_addpatchref(cd, PATCHER_resolve_native, m, funcdisp);
2742         }
2743 #endif
2744
2745         /* save integer and float argument registers */
2746
2747         j = 0;
2748
2749         for (i = 0; i < md->paramcount; i++) {
2750                 t = md->paramtypes[i].type;
2751
2752                 if (IS_INT_LNG_TYPE(t)) {
2753                         if (!md->params[i].inmemory) {
2754                                 s1 = md->params[i].regoff;
2755                                 M_LST(s1, REG_SP, LA_SIZE + PA_SIZE + 4*8 + j * 8);
2756                                 j++;
2757                         }
2758                 }
2759         }
2760
2761         for (i = 0; i < md->paramcount; i++) {
2762                 if (IS_FLT_DBL_TYPE(md->paramtypes[i].type)) {
2763                         if (!md->params[i].inmemory) {
2764                                 s1 = md->params[i].regoff;
2765                                 M_DST(s1, REG_SP, LA_SIZE + PA_SIZE + 4*8 + j * 8);
2766                                 j++;
2767                         }
2768                 }
2769         }
2770
2771         /* create native stack info */
2772
2773         M_AADD_IMM(REG_SP, cd->stackframesize * 8, REG_A0);
2774         M_MOV(REG_PV, REG_A1);
2775         M_AADD_IMM(REG_SP, cd->stackframesize * 8, REG_A2);
2776         M_ALD(REG_A3, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2777         disp = dseg_add_functionptr(cd, codegen_start_native_call);
2778
2779         M_ALD(REG_ITMP1, REG_PV, disp);
2780         M_ALD(REG_ITMP1, REG_ITMP1, 0);         /* TOC */
2781         M_MTCTR(REG_ITMP1);
2782         M_JSR;
2783
2784         /* restore integer and float argument registers */
2785
2786         j = 0;
2787
2788         for (i = 0; i < md->paramcount; i++) {
2789                 t = md->paramtypes[i].type;
2790
2791                 if (IS_INT_LNG_TYPE(t)) {
2792                         if (!md->params[i].inmemory) {
2793                                 s1 = md->params[i].regoff;
2794                                 M_LLD(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + j * 8);
2795                                 j++;
2796                         }
2797                 }
2798         }
2799
2800         for (i = 0; i < md->paramcount; i++) {
2801                 if (IS_FLT_DBL_TYPE(md->paramtypes[i].type)) {
2802                         if (!md->params[i].inmemory) {
2803                                 s1 = md->params[i].regoff;
2804                                 M_DLD(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + j * 8);
2805                                 j++;
2806                         }
2807                 }
2808         }
2809
2810         /* copy or spill arguments to new locations */
2811
2812         for (i = md->paramcount - 1, j = i + nativeparams; i >= 0; i--, j--) {
2813                 t = md->paramtypes[i].type;
2814
2815                 if (IS_INT_LNG_TYPE(t)) {
2816                         if (!md->params[i].inmemory) {
2817                                 s1 = md->params[i].regoff;
2818                                 s2 = nmd->params[j].regoff;
2819
2820                                 if (!nmd->params[j].inmemory)
2821                                         M_INTMOVE(s1, s2);
2822                                 else
2823                                         M_LST(s1, REG_SP, s2 * 8);
2824                         }
2825                         else {
2826                                 s1 = md->params[i].regoff + cd->stackframesize;
2827                                 s2 = nmd->params[j].regoff;
2828
2829                                 M_LLD(REG_ITMP1, REG_SP, s1 * 8);
2830                                 M_LST(REG_ITMP1, REG_SP, s2 * 8);
2831                         }
2832                 }
2833                 else {
2834                         /* We only copy spilled float arguments, as the float
2835                            argument registers keep unchanged. */
2836
2837                         if (md->params[i].inmemory) {
2838                                 s1 = md->params[i].regoff + cd->stackframesize;
2839                                 s2 = nmd->params[j].regoff;
2840
2841                                 M_DLD(REG_FTMP1, REG_SP, s1 * 8);
2842
2843                                 if (IS_2_WORD_TYPE(t))
2844                                         M_DST(REG_FTMP1, REG_SP, s2 * 8);
2845                                 else
2846                                         M_FST(REG_FTMP1, REG_SP, s2 * 8 + 4);
2847                         }
2848                 }
2849         }
2850
2851         /* put class into second argument register */
2852
2853         if (m->flags & ACC_STATIC) {
2854                 disp = dseg_add_unique_address(cd, m->class);
2855                 M_ALD(REG_A1, REG_PV, disp);
2856         }
2857
2858         /* put env into first argument register */
2859
2860         disp = dseg_add_unique_address(cd, _Jv_env);
2861         M_ALD(REG_A0, REG_PV, disp);
2862
2863         /* generate the actual native call */
2864         /* native functions have a different TOC for sure */
2865
2866         M_AST(REG_TOC, REG_SP, 40);     /* save old TOC */
2867         M_ALD(REG_ITMP3, REG_PV, funcdisp);
2868         M_ALD(REG_TOC, REG_ITMP3, 8);   /* load TOC from func. descriptor */
2869         M_ALD(REG_ITMP3, REG_ITMP3, 0);
2870         M_MTCTR(REG_ITMP3);
2871         M_JSR;
2872         M_ALD(REG_TOC, REG_SP, 40);     /* restore TOC */
2873
2874         /* save return value */
2875
2876         if (md->returntype.type != TYPE_VOID) {
2877                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
2878                         M_LST(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
2879                 }
2880                 else {
2881                         M_DST(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
2882                 }
2883         }
2884
2885         /* print call trace */
2886 #if ! defined(NDEBGUU)
2887         if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
2888                 emit_verbosecall_exit(jd);
2889         }
2890 #endif
2891         /* remove native stackframe info */
2892
2893         M_AADD_IMM(REG_SP, cd->stackframesize * 8, REG_A0);
2894         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
2895         M_ALD(REG_ITMP1, REG_PV, disp);
2896         M_ALD(REG_ITMP1, REG_ITMP1, 0); /* XXX what about TOC? */
2897         M_MTCTR(REG_ITMP1);
2898         M_JSR;
2899         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
2900
2901         /* restore return value */
2902
2903         if (md->returntype.type != TYPE_VOID) {
2904                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
2905                         M_LLD(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
2906                 }
2907                 else {
2908 /*                      if (IS_2_WORD_TYPE(md->returntype.type)) */
2909                                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
2910 /*                      else
2911                                 M_FLD(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8); F XXX
2912                                 */
2913                 }
2914         }
2915
2916         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2917         M_MTLR(REG_ITMP2_XPC);
2918         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe           */
2919
2920         /* check for exception */
2921
2922         M_TST(REG_ITMP1_XPTR);
2923         M_BNE(1);                           /* if no exception then return        */
2924
2925         M_RET;
2926
2927         /* handle exception */
2928
2929         M_LADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
2930
2931         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
2932         M_ALD(REG_ITMP3, REG_PV, disp);
2933         M_MTCTR(REG_ITMP3);
2934         M_RTS;
2935
2936         /* generate patcher stub call code */
2937
2938         emit_patcher_stubs(jd);
2939 }
2940
2941
2942
2943
2944 /*
2945  * These are local overrides for various environment variables in Emacs.
2946  * Please do not remove this and leave it at the end of the file, where
2947  * Emacs will automagically detect them.
2948  * ---------------------------------------------------------------------
2949  * Local variables:
2950  * mode: c
2951  * indent-tabs-mode: t
2952  * c-basic-offset: 4
2953  * tab-width: 4
2954  * End:
2955  * vim:noexpandtab:sw=4:ts=4:
2956  */