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 7311 2007-02-09 13:20:27Z 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 #include "vm/jit/abi-asm.h"
  40
  41 #include "vm/jit/powerpc64/arch.h"
  42 #include "vm/jit/powerpc64/codegen.h"
  43
  44 #include "mm/memory.h"
  45
  46 #include "native/native.h"
  47
  48 #include "vm/builtin.h"
  49 #include "vm/exceptions.h"
  50 #include "vm/global.h"
  51 #include "vm/stringlocal.h"
  52 #include "vm/vm.h"
  53
  54 #include "vm/jit/asmpart.h"
  55 #include "vm/jit/codegen-common.h"
  56 #include "vm/jit/dseg.h"
  57 #include "vm/jit/emit-common.h"
  58 #include "vm/jit/jit.h"
  59 #include "vm/jit/md.h"
  60 #include "vm/jit/parse.h"
  61 #include "vm/jit/patcher.h"
  62 #include "vm/jit/reg.h"
  63 #include "vm/jit/replace.h"
  64
  65 #if defined(ENABLE_LSRA)
  66 # include "vm/jit/allocator/lsra.h"
  67 #endif
  68
  69 #include "vmcore/loader.h"
  70 #include "vmcore/options.h"
  71
  72
  73 /* codegen *********************************************************************
  74
  75    Generates machine code.
  76
  77 *******************************************************************************/
  78
  79 bool codegen(jitdata *jd)
  80 {
  81         methodinfo         *m;
  82         codeinfo           *code;
  83         codegendata        *cd;
  84         registerdata       *rd;
  85         s4                  len, s1, s2, s3, d, disp;
  86         ptrint              a;
  87         varinfo            *var;
  88         basicblock         *bptr;
  89         instruction        *iptr;
  90         exception_entry    *ex;
  91         u2                  currentline;
  92         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  93         builtintable_entry *bte;
  94         methoddesc         *md;
  95         s4                  fieldtype;
  96         s4                  varindex;
  97         unresolved_field   *uf;
  98         fieldinfo          *fi;
  99
 100         /* get required compiler data */
 101
 102         m    = jd->m;
 103         code = jd->code;
 104         cd   = jd->cd;
 105         rd   = jd->rd;
 106
 107         /* prevent compiler warnings */
 108
 109         d = 0;
 110         lm = NULL;
 111         bte = NULL;
 112
 113         {
 114         s4 i, p, t, l;
 115         s4 savedregs_num;
 116
 117         savedregs_num = 0;
 118
 119         /* space to save used callee saved registers */
 120
 121         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 122         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 123
 124         cd->stackframesize = rd->memuse + savedregs_num;
 125
 126 #if defined(ENABLE_THREADS)
 127         /* space to save argument of monitor_enter and Return Values to survive */
 128     /* monitor_exit. The stack position for the argument can not be shared  */
 129         /* with place to save the return register on PPC64, since both values     */
 130         /* reside in R3 */
 131         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 132                 /* reserve 2 slots for long/double return values for monitorexit */
 133                 cd->stackframesize += 2;
 134         }
 135
 136 #endif
 137
 138         /* create method header */
 139
 140         /* align stack to 16-bytes */
 141
 142 /* FIXME */
 143 /*      if (!m->isleafmethod || opt_verbosecall) */
 144 /*              stackframesize = (stackframesize + 3) & ~3;
 145 */
 146 /*      else if (m->isleafmethod && (stackframesize == LA_WORD_SIZE)) */
 147 /*              stackframesize = 0; */
 148
 149         (void) dseg_add_unique_address(cd, code);                      /* CodeinfoPointer */
 150         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8);             /* FrameSize       */
 151
 152 #if defined(ENABLE_THREADS)
 153         /* IsSync contains the offset relative to the stack pointer for the
 154            argument of monitor_exit used in the exception handler. Since the
 155            offset could be zero and give a wrong meaning of the flag it is
 156            offset by one.
 157         */
 158
 159         if (checksync && (m->flags & ACC_SYNCHRONIZED))
 160                 (void) dseg_add_unique_s4(cd, (rd->memuse + 1) * 8);       /* IsSync          */
 161         else
 162 #endif
 163                 (void) dseg_add_unique_s4(cd, 0);                          /* IsSync          */
 164
 165         (void) dseg_add_unique_s4(cd, jd->isleafmethod);                /* IsLeaf          */
 166         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave         */
 167         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave         */
 168
 169         dseg_addlinenumbertablesize(cd);
 170
 171         (void) dseg_add_unique_s4(cd, jd->exceptiontablelength);       /* ExTableSize     */
 172
 173         /* create exception table */
 174
 175         for (ex = jd->exceptiontable; ex != NULL; ex = ex->down) {
 176                 dseg_add_target(cd, ex->start);
 177                 dseg_add_target(cd, ex->end);
 178                 dseg_add_target(cd, ex->handler);
 179                 (void) dseg_add_unique_address(cd, ex->catchtype.any);
 180         }
 181
 182         /* create stack frame (if necessary) */
 183
 184         if (!jd->isleafmethod) {
 185                 M_MFLR(REG_ZERO);
 186                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 187         }
 188
 189         if (cd->stackframesize)
 190                 M_STDU(REG_SP, REG_SP, -cd->stackframesize * 8);
 191
 192         /* save return address and used callee saved registers */
 193
 194         p = cd->stackframesize;
 195         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 196                 p--; M_LST(rd->savintregs[i], REG_SP, p * 8);
 197         }
 198         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 199                 p --; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 200         }
 201
 202         /* take arguments out of register or stack frame */
 203
 204         md = m->parseddesc;
 205
 206         for (p = 0, l = 0; p < md->paramcount; p++) {
 207                 t = md->paramtypes[p].type;
 208                 varindex = jd->local_map[l*5 + t];
 209                 l++;
 210                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 211                         l++;
 212                 if (varindex == UNUSED)
 213                         continue;
 214                 var = VAR(varindex);
 215                 s1 = md->params[p].regoff;
 216                 if (IS_INT_LNG_TYPE(t)) {                    /* integer args          */
 217                         if (!md->params[p].inmemory) {           /* register arguments    */
 218                                 s2 = rd->argintregs[s1];
 219                                 if (!IS_INMEMORY(var->flags))   {
 220                                         M_INTMOVE(s2, var->vv.regoff);
 221                                 } else {                             /* reg arg -> spilled    */
 222                                         M_LST(s2, REG_SP, var->vv.regoff * 8);
 223                                 }
 224                         } else {                                 /* stack arguments       */
 225                                 if (!IS_INMEMORY(var->flags)) {      /* stack arg -> register */
 226                                         M_LLD(var->vv.regoff, REG_SP, (cd->stackframesize + s1) * 8);
 227
 228                                 } else {                             /* stack arg -> spilled  */
 229                                         var->vv.regoff = cd->stackframesize + s1;
 230                                 }
 231                         }
 232
 233                 } else {                                     /* floating args         */
 234                         if (!md->params[p].inmemory) {           /* register arguments    */
 235                                 s2 = rd->argfltregs[s1];
 236                                 if (!IS_INMEMORY(var->flags)) {      /* reg arg -> register   */
 237                                         M_FLTMOVE(s2, var->vv.regoff);
 238                                 } else {                                         /* reg arg -> spilled    */
 239                                         if (IS_2_WORD_TYPE(t)) {
 240                                                 M_DST(s2, REG_SP, var->vv.regoff * 8);
 241                                         } else {
 242                                                 M_DST(s2, REG_SP, var->vv.regoff * 8);  /*  F XXX */
 243                                         }
 244                                 }
 245
 246                         } else {                                 /* stack arguments       */
 247                                 if (!(var->flags & INMEMORY)) {      /* stack-arg -> register */
 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 {                             /* stack-arg -> spilled  */
 254                                         var->vv.regoff = cd->stackframesize + s1;
 255                                 }
 256                         }
 257                 }
 258         } /* end for */
 259
 260         /* save monitorenter argument */
 261
 262 #if defined(ENABLE_THREADS)
 263
 264         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 265
 266                 /* stackoffset for argument used for LOCK_monitor_exit */
 267                 s1 = rd->memuse;
 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(rd->argintregs[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 274
 275                         for (p = 0; p < FLT_ARG_CNT; p++)
 276                                 M_DST(rd->argfltregs[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                 p = dseg_add_functionptr(cd, LOCK_monitor_enter);
 283                 M_ALD(REG_ITMP3, REG_PV, p);
 284                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
 285                 M_MTCTR(REG_ITMP3);
 286
 287                 /* get or test the lock object */
 288
 289                 if (m->flags & ACC_STATIC) {
 290                         p = dseg_add_address(cd, &m->class->object.header);
 291                         M_ALD(rd->argintregs[0], REG_PV, p);
 292                 }
 293                 else {
 294                         M_TST(rd->argintregs[0]);
 295                         M_BEQ(0);
 296                         codegen_add_nullpointerexception_ref(cd);
 297                 }
 298
 299                 M_AST(rd->argintregs[0], REG_SP, s1 * 8);       /* rd->memuse * 8 */
 300                 M_JSR;
 301 #if !defined (NDEBUG)
 302                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 303                         for (p = 0; p < INT_ARG_CNT; p++)
 304                                 M_LLD(rd->argintregs[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 305
 306                         for (p = 0; p < FLT_ARG_CNT; p++)
 307                                 M_DLD(rd->argfltregs[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 308
 309                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 310                 }
 311 #endif
 312         }
 313 #endif
 314
 315         /* call trace function */
 316 #if !defined (NDEBUG)
 317         if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
 318                 emit_verbosecall_enter(jd);
 319
 320         }
 321 #endif
 322
 323         /* end of header generation */
 324
 325         /* create replacement points */
 326
 327         REPLACEMENT_POINTS_INIT(cd, jd);
 328
 329         /* walk through all basic blocks */
 330
 331         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 332
 333                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 334
 335                 if (bptr->flags >= BBREACHED) {
 336
 337                 /* branch resolving */
 338
 339                 {
 340                 branchref *brefs;
 341                 for (brefs = bptr->branchrefs; brefs != NULL; brefs = brefs->next) {
 342                         md_codegen_patch_branch(cd, brefs->branchpos, bptr->mpc);
 343                         }
 344                 }
 345
 346                 /* handle replacement points */
 347
 348                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 349
 350                 /* copy interface registers to their destination */
 351
 352                 len = bptr->indepth;
 353                 MCODECHECK(64+len);
 354
 355 #if defined(ENABLE_LSRA)
 356                 if (opt_lsra) {
 357                         while (len) {
 358                                 len--;
 359                                 var = VAR(bptr->invars[len]);
 360                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 361                                         /* d = reg_of_var(m, var, REG_ITMP1); */
 362                                         if (!(var->flags & INMEMORY))
 363                                                 d = var->vv.regoff;
 364                                         else
 365                                                 d = REG_ITMP1;
 366                                         M_INTMOVE(REG_ITMP1, d);
 367                                         emit_store(jd, NULL, var, d);
 368                                 }
 369                         }
 370                 } else {
 371 #endif
 372                 while (len) {
 373                         len--;
 374                         var = VAR(bptr->invars[len]);
 375                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 376                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 377                                 M_INTMOVE(REG_ITMP1, d);
 378                                 emit_store(jd, NULL, var, d);
 379                         }
 380                         else {
 381                                 assert((var->flags & INOUT));
 382                         }
 383                 }
 384
 385 #if defined(ENABLE_LSRA)
 386                 }
 387 #endif
 388                 /* walk through all instructions */
 389
 390                 len = bptr->icount;
 391                 currentline = 0;
 392
 393                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 394                         bool sign_ext = false;
 395                         if (iptr->line != currentline) {
 396                                 dseg_addlinenumber(cd, iptr->line);
 397                                 currentline = iptr->line;
 398                         }
 399
 400                         MCODECHECK(64);   /* an instruction usually needs < 64 words      */
 401
 402                 switch (iptr->opc) {
 403                 case ICMD_NOP:        /* ...  ==> ...                                 */
 404                 case ICMD_POP:        /* ..., value  ==> ...                          */
 405                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 406                         break;
 407
 408                 case ICMD_INLINE_START:
 409
 410                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 411                         break;
 412
 413                 case ICMD_INLINE_BODY:
 414
 415                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 416                         dseg_addlinenumber_inline_start(cd, iptr);
 417                         dseg_addlinenumber(cd, iptr->line);
 418                         break;
 419
 420                 case ICMD_INLINE_END:
 421
 422                         dseg_addlinenumber_inline_end(cd, iptr);
 423                         dseg_addlinenumber(cd, iptr->line);
 424                         break;
 425
 426                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 427
 428                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 429                         M_TST(s1);
 430                         M_BEQ(0);
 431                         codegen_add_nullpointerexception_ref(cd);
 432                         break;
 433
 434                 /* constant operations ************************************************/
 435
 436                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 437
 438                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 439                         ICONST(d, iptr->sx.val.i);
 440                         emit_store_dst(jd, iptr, d);
 441                         break;
 442
 443                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 444
 445                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 446                         LCONST(d, iptr->sx.val.l);
 447                         emit_store_dst(jd, iptr, d);
 448                         break;
 449
 450                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 451
 452                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 453                         a = dseg_add_float(cd, iptr->sx.val.f);
 454                         M_FLD(d, REG_PV, a);
 455                         emit_store_dst(jd, iptr, d);
 456                         break;
 457
 458                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 459
 460                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 461                         a = dseg_add_double(cd, iptr->sx.val.d);
 462                         M_DLD(d, REG_PV, a);
 463                         emit_store_dst(jd, iptr, d);
 464                         break;
 465
 466                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 467
 468                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 469                         disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 470
 471                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 472                                 codegen_addpatchref(cd, PATCHER_aconst,
 473                                                                         iptr->sx.val.c.ref,
 474                                                                     disp);
 475
 476                                 if (opt_showdisassemble)
 477                                         M_NOP;
 478                         }
 479
 480                         M_ALD(d, REG_PV, disp);
 481                         emit_store_dst(jd, iptr, d);
 482                         break;
 483
 484
 485                 /* load/store/copy/move operations ************************************/
 486
 487                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 488                 case ICMD_ALOAD:      /* s1.localindex = local variable               */
 489                 case ICMD_LLOAD:
 490                 case ICMD_FLOAD:      /* ...  ==> ..., content of local variable      */
 491                 case ICMD_DLOAD:      /* ...  ==> ..., content of local variable      */
 492                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 493                 case ICMD_LSTORE:
 494                 case ICMD_FSTORE:     /* ..., value  ==> ...                          */
 495                 case ICMD_DSTORE:     /* ..., value  ==> ...                          */
 496                 case ICMD_COPY:
 497                 case ICMD_MOVE:
 498
 499                         emit_copy(jd, iptr, VAROP(iptr->s1), VAROP(iptr->dst));
 500                         break;
 501
 502                 case ICMD_ASTORE:
 503                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 504                                 emit_copy(jd, iptr, VAROP(iptr->s1), VAROP(iptr->dst));
 505                         break;
 506
 507
 508                 /* integer operations *************************************************/
 509
 510                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 511                         sign_ext = true;
 512                 case ICMD_LNEG:
 513                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 514                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 515                         M_NEG(s1, d);
 516                         if (sign_ext) M_EXTSW(d, d);
 517                         emit_store_dst(jd, iptr, d);
 518                         break;
 519
 520
 521                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 522
 523                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 524                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 525                         M_INTMOVE(s1, d);
 526                         emit_store_dst(jd, iptr, d);
 527                         break;
 528
 529                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 530
 531                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 532                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 533                         M_ISEXT(s1, d);
 534                         emit_store_dst(jd, iptr, d);
 535                         break;
 536
 537                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 538
 539                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 540                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 541                         M_BSEXT(s1, d);
 542                         emit_store_dst(jd, iptr, d);
 543                         break;
 544
 545                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 546
 547                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 548                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 549                         M_CZEXT(s1, d);
 550                         emit_store_dst(jd, iptr, d);
 551                         break;
 552
 553                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 554
 555                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 556                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 557                         M_SSEXT(s1, d);
 558                         emit_store_dst(jd, iptr, d);
 559                         break;
 560
 561
 562                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 563
 564                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 565                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 566                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 567                         M_IADD(s1, s2, d);
 568                         M_EXTSW(d,d);
 569                         emit_store_dst(jd, iptr, d);
 570                         break;
 571
 572                 case ICMD_IINC:
 573                 case ICMD_IADDCONST:
 574
 575                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 576                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 577                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 578                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 579                         } else {
 580                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 581                                 M_IADD(s1, REG_ITMP2, d);
 582                         }
 583                         M_EXTSW(d,d);
 584                         emit_store_dst(jd, iptr, d);
 585                         break;
 586
 587                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 588
 589                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 590                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 591                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 592                         M_LADD(s1, s2, d);
 593                         emit_store_dst(jd, iptr, d);
 594                         break;
 595
 596                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 597                                       /* sx.val.l = constant                          */
 598
 599                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 600                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 601                         /* XXX check me */
 602                         if ((iptr->sx.val.l >= -32768) && (iptr->sx.val.l <= 32767)) {
 603                                 M_LADD_IMM(s1, iptr->sx.val.l, d);
 604                         } else {
 605                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 606                                 M_LADD(s1, REG_ITMP2, d);
 607                         }
 608                         emit_store_dst(jd, iptr, d);
 609                         break;
 610
 611                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 612
 613                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 614                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 615                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 616                         M_SUB(s1, s2, d);
 617                         emit_store_dst(jd, iptr, d);
 618                         break;
 619
 620                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 621                                       /* sx.val.i = constant                          */
 622
 623                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 624                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 625                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768)) {
 626                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 627                         } else {
 628                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 629                                 M_SUB(s1, REG_ITMP2, d);
 630                         }
 631                         M_EXTSW(d, d);
 632                         emit_store_dst(jd, iptr, d);
 633                         break;
 634
 635                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 636
 637                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 638                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 639                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 640                         M_SUB(s1, s2, d);
 641                         emit_store_dst(jd, iptr, d);
 642                         break;
 643
 644                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 645                                       /* sx.val.l = constant                          */
 646
 647                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 648                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 649                         /* XXX check me */
 650                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767)) {
 651                                 M_LADD_IMM(s1, -iptr->sx.val.l, d);
 652                         } else {
 653                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 654                                 M_SUB(s1, REG_ITMP2, d);
 655                         }
 656                         emit_store_dst(jd, iptr, d);
 657                         break;
 658
 659                 case ICMD_IDIV:
 660                         sign_ext = true;
 661                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 662
 663                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 664                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 665                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 666                         M_TST(s2);
 667                         M_BEQ(0);
 668                         codegen_add_arithmeticexception_ref(cd);
 669
 670                         M_DIV(s1, s2, d);
 671                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 672                         /* we only need to check this if we did a LDIV, not for IDIV */
 673                         if (!sign_ext)  {
 674                                 M_MFXER(REG_ITMP2);
 675                                 M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 676                                 M_BLE(1);
 677                                 M_MOV(s1, d);                           /* java specs says result == dividend */
 678                         }
 679                         if (sign_ext) M_EXTSW(d, d);
 680                         emit_store_dst(jd, iptr, d);
 681                         break;
 682
 683                 case ICMD_IREM:
 684                         sign_ext = true;
 685                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 686                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 687                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 688                         M_TST(s2);
 689                         M_BEQ(0);
 690                         codegen_add_arithmeticexception_ref(cd);
 691
 692                         M_DIV(s1, s2,  REG_ITMP3);
 693                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 694                         /* we only need to check this if we did a LDIV, not for IDIV */
 695                         if (!sign_ext)  {
 696                                 M_MFXER(REG_ITMP2);
 697                                 M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 698                                 M_BLE(2);
 699                                 LCONST(REG_ITMP3, 0);                   /* result == 0 in this case */
 700                                 M_BR(2);
 701                         }
 702                         M_MUL(REG_ITMP3, s2, REG_ITMP2);
 703                         M_SUB(s1, REG_ITMP2,  REG_ITMP3);
 704                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 705
 706                         M_MOV(REG_ITMP3, d);
 707                         emit_store_dst(jd, iptr, REG_ITMP1);
 708                         break;
 709
 710
 711                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 712                         sign_ext = true;
 713                 case ICMD_LMUL:
 714                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 715                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 716                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 717                         M_MUL(s1, s2, d);
 718                         if (sign_ext) M_EXTSW(d, d);
 719                         emit_store_dst(jd, iptr, d);
 720                         break;
 721
 722                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 723                                       /* sx.val.i = constant                          */
 724
 725                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 726                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 727                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 728                                 M_MUL_IMM(s1, iptr->sx.val.i, d);
 729                         else {
 730                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 731                                 M_MUL(s1, REG_ITMP3, d);
 732                         }
 733                         M_EXTSW(d, d);
 734                         emit_store_dst(jd, iptr, d);
 735                         break;
 736                 case ICMD_LMULCONST:
 737                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 738                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 739                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767))
 740                                 M_MUL_IMM(s1, iptr->sx.val.l, d);
 741                         else {
 742                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 743                                 M_MUL(s1, REG_ITMP3, d);
 744                         }
 745                         emit_store_dst(jd, iptr, d);
 746                         break;
 747
 748                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 749
 750                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 751                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 752                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 753                         M_ADDZE(d, d);
 754                         emit_store_dst(jd, iptr, d);
 755                         break;
 756
 757                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 758
 759                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 760                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 761                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 762                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 763                         M_SLL(s1, REG_ITMP3, d);
 764                         M_EXTSW(d, d);
 765                         emit_store_dst(jd, iptr, d);
 766                         break;
 767
 768                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 769                                       /* sx.val.i = constant                             */
 770
 771                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 772                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 773                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 774                         M_EXTSW(d,d);
 775                         emit_store_dst(jd, iptr, d);
 776                         break;
 777
 778                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 779
 780                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 781                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 782                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 783                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 784                         M_SRA(s1, REG_ITMP3, d);
 785                         emit_store_dst(jd, iptr, d);
 786                         break;
 787
 788                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 789                                       /* sx.val.i = constant                             */
 790
 791                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 792                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 793                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 794                         emit_store_dst(jd, iptr, d);
 795                         break;
 796
 797                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 798
 799                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 800                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 801                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 802                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 803                         M_SRL(s1, REG_ITMP2, d);
 804                         emit_store_dst(jd, iptr, d);
 805                         break;
 806
 807                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 808                                       /* sx.val.i = constant                             */
 809
 810                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 811                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 812                         if (iptr->sx.val.i & 0x1f) {
 813                                 M_SRL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 814                         } else {
 815                                 M_INTMOVE(s1, d);
 816                         }
 817                         emit_store_dst(jd, iptr, d);
 818                         break;
 819
 820                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 821                 case ICMD_LAND:
 822
 823                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 824                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 825                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 826                         M_AND(s1, s2, d);
 827                         emit_store_dst(jd, iptr, d);
 828                         break;
 829
 830                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 831                                       /* sx.val.i = constant                          */
 832
 833                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 834                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 835                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535)) {
 836                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 837                                 }
 838                         /*
 839                         else if (iptr->sx.val.i == 0xffffff) {
 840                                 M_RLWINM(s1, 0, 8, 31, d);
 841                                 }
 842                         */
 843                         else {
 844                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 845                                 M_AND(s1, REG_ITMP3, d);
 846                         }
 847                         emit_store_dst(jd, iptr, d);
 848                         break;
 849
 850                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 851                                       /* sx.val.l = constant                          */
 852
 853                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 854                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 855                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 856                                 M_AND_IMM(s1, iptr->sx.val.l, d);
 857                         /*
 858                         else if (iptr->sx.val.l == 0xffffff) {
 859                                 M_RLWINM(s1, 0, 8, 31, d);
 860                                 }
 861                         */
 862                         else {
 863                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 864                                 M_AND(s1, REG_ITMP3, d);
 865                         }
 866                         emit_store_dst(jd, iptr, d);
 867                         break;
 868
 869                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 870                                       /* sx.val.i = constant                             */
 871                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 872                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 873                         M_MOV(s1, REG_ITMP2);
 874                         M_CMPI(s1, 0);
 875                         M_BGE(1 + 2*(iptr->sx.val.i >= 32768));
 876                         if (iptr->sx.val.i >= 32768) {
 877                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 878                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 879                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 880                         } else {
 881                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 882                         }
 883                         {
 884                                 int b=0, m = iptr->sx.val.i;
 885                                 while (m >>= 1)
 886                                         ++b;
 887                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 888                         }
 889                         M_SUB(s1, REG_ITMP2, d);
 890                         M_EXTSW(d, d);
 891                         emit_store_dst(jd, iptr, d);
 892                         break;
 893
 894                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 895                 case ICMD_LOR:
 896
 897                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 898                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 899                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 900                         M_OR(s1, s2, d);
 901                         emit_store_dst(jd, iptr, d);
 902                         break;
 903
 904                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
 905                                       /* sx.val.i = constant                          */
 906
 907                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 908                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 909                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 910                                 M_OR_IMM(s1, iptr->sx.val.i, d);
 911                         else {
 912                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 913                                 M_OR(s1, REG_ITMP3, d);
 914                         }
 915                         emit_store_dst(jd, iptr, d);
 916                         break;
 917
 918                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
 919                                       /* sx.val.l = constant                          */
 920
 921                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 922                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 923                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 924                                 M_OR_IMM(s1, iptr->sx.val.l, d);
 925                         else {
 926                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 927                                 M_OR(s1, REG_ITMP3, d);
 928                         }
 929                         emit_store_dst(jd, iptr, d);
 930                         break;
 931
 932
 933                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
 934                 case ICMD_LXOR:
 935
 936                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 937                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 938                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 939                         M_XOR(s1, s2, d);
 940                         emit_store_dst(jd, iptr, d);
 941                         break;
 942
 943                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
 944                                       /* sx.val.i = constant                          */
 945
 946                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 947                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 948                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 949                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
 950                         else {
 951                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 952                                 M_XOR(s1, REG_ITMP3, d);
 953                         }
 954                         emit_store_dst(jd, iptr, d);
 955                         break;
 956
 957                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
 958                                       /* sx.val.l = constant                          */
 959
 960                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 961                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 962                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 963                                 M_XOR_IMM(s1, iptr->sx.val.l, d);
 964                         else {
 965                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 966                                 M_XOR(s1, REG_ITMP3, d);
 967                         }
 968                         emit_store_dst(jd, iptr, d);
 969                         break;
 970
 971                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
 972
 973                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 974                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 975                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 976                         /* XXX implement me!!! */
 977                         emit_store_dst(jd, iptr, d);
 978                         break;
 979                         break;
 980
 981
 982                 /* floating operations ************************************************/
 983
 984                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
 985
 986                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 987                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
 988                         M_FMOVN(s1, d);
 989                         emit_store_dst(jd, iptr, d);
 990                         break;
 991
 992                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
 993
 994                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 995                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
 996                         M_FMOVN(s1, d);
 997                         emit_store_dst(jd, iptr, d);
 998                         break;
 999
1000                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1001
1002                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1003                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1004                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1005                         M_FADD(s1, s2, d);
1006                         emit_store_dst(jd, iptr, d);
1007                         break;
1008
1009                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1010
1011                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1012                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1013                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1014                         M_DADD(s1, s2, d);
1015                         emit_store_dst(jd, iptr, d);
1016                         break;
1017
1018                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1019
1020                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1021                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1022                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1023                         M_FSUB(s1, s2, d);
1024                         emit_store_dst(jd, iptr, d);
1025                         break;
1026
1027                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1028
1029                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1030                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1031                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1032                         M_DSUB(s1, s2, d);
1033                         emit_store_dst(jd, iptr, d);
1034                         break;
1035
1036                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1037
1038                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1039                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1040                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1041                         M_FMUL(s1, s2, d);
1042                         emit_store_dst(jd, iptr, d);
1043                         break;
1044
1045                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1046
1047                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1048                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1049                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1050                         M_DMUL(s1, s2, d);
1051                         emit_store_dst(jd, iptr, d);
1052                         break;
1053
1054                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1055
1056                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1057                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1058                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1059                         M_FDIV(s1, s2, d);
1060                         emit_store_dst(jd, iptr, d);
1061                         break;
1062
1063                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1064
1065                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1066                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1067                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1068                         M_DDIV(s1, s2, d);
1069                         emit_store_dst(jd, iptr, d);
1070                         break;
1071
1072                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1073                 case ICMD_D2I:
1074
1075                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1076                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1077                         M_CLR(d);
1078                         disp = dseg_add_float(cd, 0.0);
1079                         M_FLD(REG_FTMP2, REG_PV, disp);
1080                         M_FCMPU(s1, REG_FTMP2);
1081                         M_BNAN(4);
1082                         disp = dseg_add_unique_s4(cd, 0);
1083                         M_CVTDL_C(s1, REG_FTMP1);
1084                         M_LDA(REG_ITMP1, REG_PV, disp);
1085                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1086                         M_ILD(d, REG_PV, disp);
1087                         emit_store_dst(jd, iptr, d);
1088                         break;
1089
1090                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1091
1092                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1093                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1094                         M_FLTMOVE(s1, d);
1095                         emit_store_dst(jd, iptr, d);
1096                         break;
1097
1098                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1099
1100                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1101                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1102                         M_CVTDF(s1, d);
1103                         emit_store_dst(jd, iptr, d);
1104                         break;
1105
1106                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1107                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1108
1109
1110                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1111                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1112                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1113                         M_FCMPU(s2, s1);
1114                         M_IADD_IMM(REG_ZERO, -1, d);
1115                         M_BNAN(4);
1116                         M_BGT(3);
1117                         M_IADD_IMM(REG_ZERO, 0, d);
1118                         M_BGE(1);
1119                         M_IADD_IMM(REG_ZERO, 1, d);
1120                         emit_store_dst(jd, iptr, d);
1121                         break;
1122
1123                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1124                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1125
1126                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1127                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1128                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1129                         M_FCMPU(s1, s2);
1130                         M_IADD_IMM(REG_ZERO, 1, d);
1131                         M_BNAN(4);
1132                         M_BGT(3);
1133                         M_IADD_IMM(REG_ZERO, 0, d);
1134                         M_BGE(1);
1135                         M_IADD_IMM(REG_ZERO, -1, d);
1136                         emit_store_dst(jd, iptr, d);
1137                         break;
1138
1139                 case ICMD_IF_FCMPEQ:    /* ..., value, value ==> ...                  */
1140                 case ICMD_IF_DCMPEQ:
1141
1142                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1143                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1144                         M_FCMPU(s1, s2);
1145                         M_BNAN(1);
1146                         M_BEQ(0);
1147                         codegen_addreference(cd, iptr->dst.block);
1148                         break;
1149
1150                 case ICMD_IF_FCMPNE:    /* ..., value, value ==> ...                  */
1151                 case ICMD_IF_DCMPNE:
1152
1153                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1154                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1155                         M_FCMPU(s1, s2);
1156                         M_BNAN(0);
1157                         codegen_addreference(cd, iptr->dst.block);
1158                         M_BNE(0);
1159                         codegen_addreference(cd, iptr->dst.block);
1160                         break;
1161
1162
1163                 case ICMD_IF_FCMPL_LT:  /* ..., value, value ==> ...                  */
1164                 case ICMD_IF_DCMPL_LT:
1165
1166                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1167                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1168                         M_FCMPU(s1, s2);
1169                         M_BNAN(0);
1170                         codegen_addreference(cd, iptr->dst.block);
1171                         M_BLT(0);
1172                         codegen_addreference(cd, iptr->dst.block);
1173                         break;
1174
1175                 case ICMD_IF_FCMPL_GT:  /* ..., value, value ==> ...                  */
1176                 case ICMD_IF_DCMPL_GT:
1177
1178                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1179                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1180                         M_FCMPU(s1, s2);
1181                         M_BNAN(1);
1182                         M_BGT(0);
1183                         codegen_addreference(cd, iptr->dst.block);
1184                         break;
1185
1186                 case ICMD_IF_FCMPL_LE:  /* ..., value, value ==> ...                  */
1187                 case ICMD_IF_DCMPL_LE:
1188
1189                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1190                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1191                         M_FCMPU(s1, s2);
1192                         M_BNAN(0);
1193                         codegen_addreference(cd, iptr->dst.block);
1194                         M_BLE(0);
1195                         codegen_addreference(cd, iptr->dst.block);
1196                         break;
1197
1198                 case ICMD_IF_FCMPL_GE:  /* ..., value, value ==> ...                  */
1199                 case ICMD_IF_DCMPL_GE:
1200
1201                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1202                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1203                         M_FCMPU(s1, s2);
1204                         M_BNAN(1);
1205                         M_BGE(0);
1206                         codegen_addreference(cd, iptr->dst.block);
1207                         break;
1208
1209                 case ICMD_IF_FCMPG_LT:  /* ..., value, value ==> ...                  */
1210                 case ICMD_IF_DCMPG_LT:
1211
1212                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1213                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1214                         M_FCMPU(s1, s2);
1215                         M_BNAN(1);
1216                         M_BLT(0);
1217                         codegen_addreference(cd, iptr->dst.block);
1218                         break;
1219
1220                 case ICMD_IF_FCMPG_GT:  /* ..., value, value ==> ...                  */
1221                 case ICMD_IF_DCMPG_GT:
1222
1223                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1224                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1225                         M_FCMPU(s1, s2);
1226                         M_BNAN(0);
1227                         codegen_addreference(cd, iptr->dst.block);
1228                         M_BGT(0);
1229                         codegen_addreference(cd, iptr->dst.block);
1230                         break;
1231
1232                 case ICMD_IF_FCMPG_LE:  /* ..., value, value ==> ...                  */
1233                 case ICMD_IF_DCMPG_LE:
1234
1235                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1236                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1237                         M_FCMPU(s1, s2);
1238                         M_BNAN(1);
1239                         M_BLE(0);
1240                         codegen_addreference(cd, iptr->dst.block);
1241                         break;
1242
1243                 case ICMD_IF_FCMPG_GE:  /* ..., value, value ==> ...                  */
1244                 case ICMD_IF_DCMPG_GE:
1245
1246                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1247                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1248                         M_FCMPU(s1, s2);
1249                         M_BNAN(0);
1250                         codegen_addreference(cd, iptr->dst.block);
1251                         M_BGE(0);
1252                         codegen_addreference(cd, iptr->dst.block);
1253                         break;
1254
1255
1256                 /* memory operations **************************************************/
1257
1258                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1259
1260                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1261                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1262                         gen_nullptr_check(s1);
1263                         M_ILD(d, s1, OFFSET(java_arrayheader, size));
1264                         emit_store_dst(jd, iptr, d);
1265                         break;
1266
1267                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1268
1269                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1270                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1271                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1272                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1273                                 gen_nullptr_check(s1);
1274                                 gen_bound_check;
1275                         }
1276                         M_IADD_IMM(s2, OFFSET(java_bytearray, data[0]), REG_ITMP2);
1277                         M_LBZX(d, s1, REG_ITMP2);
1278                         M_BSEXT(d, d);
1279                         emit_store_dst(jd, iptr, d);
1280                         break;
1281
1282                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1283
1284                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1285                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1286                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1287                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1288                                 gen_nullptr_check(s1);
1289                                 gen_bound_check;
1290                         }
1291                         M_SLL_IMM(s2, 1, REG_ITMP2);
1292                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray, data[0]), REG_ITMP2);
1293                         M_LHAX(d, s1, REG_ITMP2);
1294                         emit_store_dst(jd, iptr, d);
1295                         break;
1296
1297                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1298
1299                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1300                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1301                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1302                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1303                                 gen_nullptr_check(s1);
1304                                 gen_bound_check;
1305                         }
1306                         M_SLL_IMM(s2, 1, REG_ITMP2);
1307                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray, data[0]), REG_ITMP2);
1308                         M_LHAX(d, s1, REG_ITMP2);
1309                         emit_store_dst(jd, iptr, d);
1310                         break;
1311
1312                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1313
1314                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1315                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1316                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1317                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1318                                 gen_nullptr_check(s1);
1319                                 gen_bound_check;
1320                         }
1321                         M_SLL_IMM(s2, 2, REG_ITMP2);
1322                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray, data[0]), REG_ITMP2);
1323                         M_LWZX(d, s1, REG_ITMP2);
1324                         emit_store_dst(jd, iptr, d);
1325                         break;
1326
1327                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1328
1329                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1330                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1331                         d = codegen_reg_of_dst(jd, iptr, PACK_REGS(REG_ITMP2, REG_ITMP1));
1332                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1333                                 gen_nullptr_check(s1);
1334                                 gen_bound_check;
1335                         }
1336                         M_SLL_IMM(s2, 3, REG_ITMP2);
1337                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1338                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray, data[0]));
1339                         emit_store_dst(jd, iptr, d);
1340                         break;
1341
1342                 case ICMD_FALOAD:     /* ..., 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_FTMP1);
1347                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1348                                 gen_nullptr_check(s1);
1349                                 gen_bound_check;
1350                         }
1351                         M_SLL_IMM(s2, 2, REG_ITMP2);
1352                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray, data[0]), REG_ITMP2);
1353                         M_LFSX(d, s1, REG_ITMP2);
1354                         emit_store_dst(jd, iptr, d);
1355                         break;
1356
1357                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1358
1359                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1360                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1361                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1362                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1363                                 gen_nullptr_check(s1);
1364                                 gen_bound_check;
1365                         }
1366                         M_SLL_IMM(s2, 3, REG_ITMP2);
1367                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray, data[0]), REG_ITMP2);
1368                         M_LFDX(d, s1, REG_ITMP2);
1369                         emit_store_dst(jd, iptr, d);
1370                         break;
1371
1372                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1373
1374                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1375                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1376                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1377                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1378                                 gen_nullptr_check(s1);
1379                                 gen_bound_check;
1380                         }
1381                         M_SLL_IMM(s2, 3, REG_ITMP2);
1382                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray, data[0]), REG_ITMP2);
1383                         M_ALDX(d, s1, REG_ITMP2);
1384                         emit_store_dst(jd, iptr, d);
1385                         break;
1386
1387
1388                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1389
1390                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1391                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1392                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1393                                 gen_nullptr_check(s1);
1394                                 gen_bound_check;
1395                         }
1396                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1397                         M_IADD_IMM(s2, OFFSET(java_bytearray, data[0]), REG_ITMP2);
1398                         M_STBX(s3, s1, REG_ITMP2);
1399                         break;
1400
1401                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1402
1403                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1404                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1405                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1406                                 gen_nullptr_check(s1);
1407                                 gen_bound_check;
1408                         }
1409                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1410                         M_SLL_IMM(s2, 1, REG_ITMP2);
1411                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray, data[0]), REG_ITMP2);
1412                         M_STHX(s3, s1, REG_ITMP2);
1413                         break;
1414
1415                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1416
1417                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1418                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1419                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1420                                 gen_nullptr_check(s1);
1421                                 gen_bound_check;
1422                         }
1423                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1424                         M_SLL_IMM(s2, 1, REG_ITMP2);
1425                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray, data[0]), REG_ITMP2);
1426                         M_STHX(s3, s1, REG_ITMP2);
1427                         break;
1428
1429                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1430
1431                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1432                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1433                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1434                                 gen_nullptr_check(s1);
1435                                 gen_bound_check;
1436                         }
1437                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1438                         M_SLL_IMM(s2, 2, REG_ITMP2);
1439                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray, data[0]), REG_ITMP2);
1440                         M_STWX(s3, s1, REG_ITMP2);
1441                         break;
1442
1443                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1444
1445                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1446                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1447                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1448                                 gen_nullptr_check(s1);
1449                                 gen_bound_check;
1450                         }
1451                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1452                         M_SLL_IMM(s2, 3, REG_ITMP2);
1453                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray, data[0]), REG_ITMP2);
1454                         M_LSTX(s3, s1, REG_ITMP2);
1455                         break;
1456
1457                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1458
1459                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1460                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1461                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1462                                 gen_nullptr_check(s1);
1463                                 gen_bound_check;
1464                         }
1465                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1466                         M_SLL_IMM(s2, 2, REG_ITMP2);
1467                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray, data[0]), REG_ITMP2);
1468                         M_STFSX(s3, s1, REG_ITMP2);
1469                         break;
1470
1471                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1472
1473                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1474                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1475                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1476                                 gen_nullptr_check(s1);
1477                                 gen_bound_check;
1478                         }
1479                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1480                         M_SLL_IMM(s2, 3, REG_ITMP2);
1481                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray, data[0]), REG_ITMP2);
1482                         M_STFDX(s3, s1, REG_ITMP2);
1483                         break;
1484
1485                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1486
1487                         s1 = emit_load_s1(jd, iptr, rd->argintregs[0]);
1488                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1489                         if (INSTRUCTION_MUST_CHECK(iptr)) {
1490                                 gen_nullptr_check(s1);
1491                                 gen_bound_check;
1492                         }
1493                         s3 = emit_load_s3(jd, iptr, rd->argintregs[1]);
1494
1495                         disp = dseg_add_functionptr(cd, BUILTIN_canstore);
1496                         M_ALD(REG_ITMP3, REG_PV, disp);
1497                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1498                         M_MTCTR(REG_ITMP3);
1499
1500                         M_INTMOVE(s1, rd->argintregs[0]);
1501                         M_INTMOVE(s3, rd->argintregs[1]);
1502
1503                         M_JSR;
1504                         M_TST(REG_RESULT);
1505                         M_BEQ(0);
1506                         codegen_add_arraystoreexception_ref(cd);
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                         M_ASTX(s3, s1, REG_ITMP2);
1514                         break;
1515
1516
1517                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1518
1519                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1520                                 uf = iptr->sx.s23.s3.uf;
1521
1522                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1523                                 disp = dseg_add_unique_address(cd, NULL);
1524
1525                                 codegen_addpatchref(cd, PATCHER_get_putstatic,
1526                                                                         iptr->sx.s23.s3.uf, disp);
1527
1528                         } else {
1529                                 fieldinfo *fi = iptr->sx.s23.s3.fmiref->p.field;
1530
1531                                 fieldtype = fi->type;
1532                                 disp = dseg_add_address(cd, &(fi->value));
1533
1534                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class)) {
1535                                         codegen_addpatchref(cd, PATCHER_clinit, fi->class, disp);
1536                                 }
1537                         }
1538
1539                         M_ALD(REG_ITMP1, REG_PV, disp);
1540                         switch (fieldtype) {
1541                         case TYPE_INT:
1542                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1543                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1544                                 break;
1545                         case TYPE_LNG:
1546                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1547                                 M_LLD(d, REG_ITMP1, 0);
1548                                 break;
1549                         case TYPE_ADR:
1550                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1551                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1552                                 break;
1553                         case TYPE_FLT:
1554                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1555                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1556                                 break;
1557                         case TYPE_DBL:
1558                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1559                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1560                                 break;
1561                         }
1562                         emit_store_dst(jd, iptr, d);
1563                         break;
1564
1565                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1566
1567
1568                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1569                                 uf = iptr->sx.s23.s3.uf;
1570
1571                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1572                                 disp = dseg_add_unique_address(cd, NULL);
1573
1574                                 codegen_addpatchref(cd, PATCHER_get_putstatic,
1575                                                                         iptr->sx.s23.s3.uf, disp);
1576                         } else {
1577                                 fieldinfo *fi = iptr->sx.s23.s3.fmiref->p.field;
1578
1579                                 fieldtype = fi->type;
1580                                 disp = dseg_add_address(cd, &(fi->value));
1581
1582                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class)) {
1583                                         codegen_addpatchref(cd, PATCHER_clinit, fi->class, disp);
1584                                 }
1585                         }
1586
1587                         M_ALD(REG_ITMP1, REG_PV, disp);
1588                         switch (fieldtype) {
1589                         case TYPE_INT:
1590                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1591                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1592                                 break;
1593                         case TYPE_LNG:
1594                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1595                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1596                                 break;
1597                         case TYPE_ADR:
1598                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1599                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1600                                 break;
1601                         case TYPE_FLT:
1602                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1603                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1604                                 break;
1605                         case TYPE_DBL:
1606                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1607                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1608                                 break;
1609                         }
1610                         break;
1611
1612
1613                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1614
1615                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1616                         gen_nullptr_check(s1);
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
1625                                 if (opt_showdisassemble)
1626                                         M_NOP;
1627
1628                         } else {
1629                                 fi = iptr->sx.s23.s3.fmiref->p.field;
1630                                 fieldtype = fi->type;
1631                                 disp = fi->offset;
1632                         }
1633
1634                         switch (fieldtype) {
1635                         case TYPE_INT:
1636                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1637                                 M_ILD(d, s1, disp);
1638                                 break;
1639                         case TYPE_LNG:
1640                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1641                                 M_LLD(d, s1, disp);
1642                                 break;
1643                         case TYPE_ADR:
1644                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1645                                 M_ALD(d, s1, disp);
1646                                 break;
1647                         case TYPE_FLT:
1648                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1649                                 M_FLD(d, s1, disp);
1650                                 break;
1651                         case TYPE_DBL:
1652                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1653                                 M_DLD(d, s1, disp);
1654                                 break;
1655                         }
1656                         emit_store_dst(jd, iptr, d);
1657                         break;
1658
1659                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1660
1661                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1662                         gen_nullptr_check(s1);
1663
1664                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1665                                 uf        = iptr->sx.s23.s3.uf;
1666                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1667                                 disp      = 0;
1668                         }
1669                         else {
1670                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1671                                 fieldtype = fi->type;
1672                                 disp      = fi->offset;
1673                         }
1674
1675                         if (IS_INT_LNG_TYPE(fieldtype)) {
1676                                 s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1677                         }
1678                         else
1679                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1680
1681                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1682                                 codegen_addpatchref(cd, PATCHER_get_putfield, uf, 0);
1683
1684                                 if (opt_showdisassemble)
1685                                         M_NOP;
1686                         }
1687
1688
1689                         switch (fieldtype) {
1690                         case TYPE_INT:
1691                                 M_IST(s2, s1, disp);
1692                                 break;
1693                         case TYPE_LNG:
1694                                 M_LST(s2, s1, disp);
1695                                 break;
1696                         case TYPE_ADR:
1697                                 M_AST(s2, s1, disp);
1698                                 break;
1699                         case TYPE_FLT:
1700                                 M_FST(s2, s1, disp);
1701                                 break;
1702                         case TYPE_DBL:
1703                                 M_DST(s2, s1, disp);
1704                                 break;
1705                         }
1706                         break;
1707
1708
1709                 /* branch operations **************************************************/
1710
1711                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1712
1713                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1714                         M_LNGMOVE(s1, REG_ITMP1_XPTR);
1715
1716 #ifdef ENABLE_VERIFIER
1717                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1718                                 codegen_addpatchref(cd, PATCHER_athrow_areturn,
1719                                                                         iptr->sx.s23.s2.uc, 0);
1720
1721                                 if (opt_showdisassemble)
1722                                         M_NOP;
1723                         }
1724 #endif /* ENABLE_VERIFIER */
1725
1726                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1727                         M_ALD(REG_ITMP2, REG_PV, disp);
1728                         M_MTCTR(REG_ITMP2);
1729
1730                         if (jd->isleafmethod) M_MFLR(REG_ITMP3);         /* save LR        */
1731                         M_BL(0);                                        /* get current PC */
1732                         M_MFLR(REG_ITMP2_XPC);
1733                         if (jd->isleafmethod) M_MTLR(REG_ITMP3);         /* restore LR     */
1734                         M_RTS;                                          /* jump to CTR    */
1735
1736                         ALIGNCODENOP;
1737                         break;
1738
1739                 case ICMD_GOTO:         /* ... ==> ...                                */
1740                 case ICMD_RET:          /* ... ==> ...                                */
1741
1742                         M_BR(0);
1743                         codegen_addreference(cd, iptr->dst.block);
1744                         ALIGNCODENOP;
1745                         break;
1746
1747                 case ICMD_JSR:          /* ... ==> ...                                */
1748
1749                         M_BR(0);
1750                         codegen_addreference(cd, iptr->sx.s23.s3.jsrtarget.block);
1751                         ALIGNCODENOP;
1752                         break;
1753
1754                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1755
1756                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1757                         M_TST(s1);
1758                         M_BEQ(0);
1759                         codegen_addreference(cd, iptr->dst.block);
1760                         break;
1761
1762                 case ICMD_IFNONNULL:    /* ..., value ==> ...                         */
1763
1764                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1765                         M_TST(s1);
1766                         M_BNE(0);
1767                         codegen_addreference(cd, iptr->dst.block);
1768                         break;
1769
1770                 case ICMD_IFLT:
1771                 case ICMD_IFLE:
1772                 case ICMD_IFNE:
1773                 case ICMD_IFGT:
1774                 case ICMD_IFGE:
1775                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1776
1777                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1778                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1779                                 M_CMPI(s1, iptr->sx.val.i);
1780                         else {
1781                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1782                                 M_CMP(s1, REG_ITMP2);
1783                         }
1784                         switch (iptr->opc) {
1785                         case ICMD_IFLT:
1786                                 M_BLT(0);
1787                                 break;
1788                         case ICMD_IFLE:
1789                                 M_BLE(0);
1790                                 break;
1791                         case ICMD_IFNE:
1792                                 M_BNE(0);
1793                                 break;
1794                         case ICMD_IFGT:
1795                                 M_BGT(0);
1796                                 break;
1797                         case ICMD_IFGE:
1798                                 M_BGE(0);
1799                                 break;
1800                         case ICMD_IFEQ:
1801                                 M_BEQ(0);
1802                                 break;
1803                         }
1804                         codegen_addreference(cd, iptr->dst.block);
1805                         break;
1806
1807                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1808                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1809                         LCONST(REG_ITMP2, iptr->sx.val.l);
1810                         M_CMP(s1, REG_ITMP2);
1811                         M_BEQ(0);
1812                         codegen_addreference(cd, iptr->dst.block);
1813                         break;
1814                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1815                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1816                         LCONST(REG_ITMP2, iptr->sx.val.l);
1817                         M_CMP(s1, REG_ITMP2);
1818                         M_BLT(0);
1819                         codegen_addreference(cd, iptr->dst.block);
1820                         break;
1821                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1822                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1823                         LCONST(REG_ITMP2, iptr->sx.val.l);
1824                         M_CMP(s1, REG_ITMP2);
1825                         M_BLE(0);
1826                         codegen_addreference(cd, iptr->dst.block);
1827                         break;
1828
1829                 case ICMD_IF_LNE:       /* ..., value ==> ... */
1830                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1831                         LCONST(REG_ITMP2, iptr->sx.val.l);
1832                         M_CMP(s1, REG_ITMP2);
1833                         M_BNE(0);
1834                         codegen_addreference(cd, iptr->dst.block);
1835                         break;
1836                 case ICMD_IF_LGE:       /* ..., value ==> ... */
1837                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1838                         LCONST(REG_ITMP2, iptr->sx.val.l);
1839                         M_CMP(s1, REG_ITMP2);
1840                         M_BGE(0);
1841                         codegen_addreference(cd, iptr->dst.block);
1842                         break;
1843                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1844                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1845                         LCONST(REG_ITMP2, iptr->sx.val.l);
1846                         M_CMP(s1, REG_ITMP2);
1847                         M_BGT(0);
1848                         codegen_addreference(cd, iptr->dst.block);
1849                         break;
1850                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
1851                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
1852                 case ICMD_IF_LCMPEQ:
1853
1854                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1855                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1856                         M_CMP(s1, s2);
1857                         M_BEQ(0);
1858                         codegen_addreference(cd, iptr->dst.block);
1859                         break;
1860
1861                 case ICMD_IF_ICMPNE:    /* ..., value, value ==> ...                  */
1862                 case ICMD_IF_ACMPNE:    /* op1 = target JavaVM pc                     */
1863                 case ICMD_IF_LCMPNE:
1864
1865                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1866                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1867                         M_CMP(s1, s2);
1868                         M_BNE(0);
1869                         codegen_addreference(cd, iptr->dst.block);
1870                         break;
1871
1872
1873                 case ICMD_IF_ICMPLT:    /* ..., value, value ==> ...                  */
1874                 case ICMD_IF_LCMPLT:
1875
1876                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1877                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1878                         M_CMP(s1, s2);
1879                         M_BLT(0);
1880                         codegen_addreference(cd, iptr->dst.block);
1881                         break;
1882
1883                 case ICMD_IF_ICMPGT:    /* ..., value, value ==> ...                  */
1884                 case ICMD_IF_LCMPGT:
1885
1886                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1887                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1888                         M_CMP(s1, s2);
1889                         M_BGT(0);
1890                         codegen_addreference(cd, iptr->dst.block);
1891                         break;
1892
1893                 case ICMD_IF_ICMPLE:    /* ..., value, value ==> ...                  */
1894                 case ICMD_IF_LCMPLE:
1895
1896                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1897                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1898                         M_CMP(s1, s2);
1899                         M_BLE(0);
1900                         codegen_addreference(cd, iptr->dst.block);
1901                         break;
1902
1903                 case ICMD_IF_ICMPGE:    /* ..., value, value ==> ...                  */
1904                 case ICMD_IF_LCMPGE:
1905
1906                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1907                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1908                         M_CMP(s1, s2);
1909                         M_BGE(0);
1910                         codegen_addreference(cd, iptr->dst.block);
1911                         break;
1912
1913
1914                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
1915                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
1916
1917                         REPLACEMENT_POINT_RETURN(cd, iptr);
1918                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1919                         M_LNGMOVE(s1, REG_RESULT);
1920                         goto nowperformreturn;
1921
1922                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
1923
1924                         REPLACEMENT_POINT_RETURN(cd, iptr);
1925                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1926                         M_LNGMOVE(s1, REG_RESULT);
1927
1928 #ifdef ENABLE_VERIFIER
1929                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1930                                 codegen_addpatchref(cd, PATCHER_athrow_areturn,
1931                                                                         iptr->sx.s23.s2.uc, 0);
1932
1933                                 if (opt_showdisassemble)
1934                                         M_NOP;
1935                         }
1936 #endif /* ENABLE_VERIFIER */
1937
1938                         goto nowperformreturn;
1939
1940                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
1941                 case ICMD_DRETURN:
1942
1943                         REPLACEMENT_POINT_RETURN(cd, iptr);
1944                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
1945                         M_FLTMOVE(s1, REG_FRESULT);
1946                         goto nowperformreturn;
1947
1948                 case ICMD_RETURN:      /* ...  ==> ...                                */
1949
1950                         REPLACEMENT_POINT_RETURN(cd, iptr);
1951
1952 nowperformreturn:
1953                         {
1954                         s4 i, p;
1955
1956                         p = cd->stackframesize;
1957
1958                         /* call trace function */
1959
1960 #if !defined(NDEBUG)
1961                         if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
1962                                 emit_verbosecall_exit(jd);
1963                         }
1964 #endif
1965
1966 #if defined(ENABLE_THREADS)
1967                         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
1968                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
1969                                 M_ALD(REG_ITMP3, REG_PV, disp);
1970                                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1971                                 M_MTCTR(REG_ITMP3);
1972
1973                                 /* we need to save the proper return value */
1974
1975                                 switch (iptr->opc) {
1976                                 case ICMD_LRETURN:
1977                                 case ICMD_IRETURN:
1978                                 case ICMD_ARETURN:
1979                                         /* fall through */
1980                                         M_LST(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1981                                         break;
1982                                 case ICMD_FRETURN:
1983                                         M_FST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1984                                         break;
1985                                 case ICMD_DRETURN:
1986                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1987                                         break;
1988                                 }
1989
1990                                 M_ALD(rd->argintregs[0], REG_SP, rd->memuse * 8);
1991                                 M_JSR;
1992
1993                                 /* and now restore the proper return value */
1994
1995                                 switch (iptr->opc) {
1996                                 case ICMD_LRETURN:
1997                                 case ICMD_IRETURN:
1998                                 case ICMD_ARETURN:
1999                                         /* fall through */
2000                                         M_LLD(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
2001                                         break;
2002                                 case ICMD_FRETURN:
2003                                         M_FLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
2004                                         break;
2005                                 case ICMD_DRETURN:
2006                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
2007                                         break;
2008                                 }
2009                         }
2010 #endif
2011
2012                         /* restore return address                                         */
2013
2014                         if (!jd->isleafmethod) {
2015                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
2016                                    may have a displacement overflow. */
2017
2018                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
2019                                 M_MTLR(REG_ITMP1);
2020                         }
2021
2022                         /* restore saved registers                                        */
2023
2024                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
2025                                 p--; M_LLD(rd->savintregs[i], REG_SP, p * 8);
2026                         }
2027                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
2028                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
2029                         }
2030
2031                         /* deallocate stack                                               */
2032
2033                         if (cd->stackframesize)
2034                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
2035
2036                         M_RET;
2037                         ALIGNCODENOP;
2038                         }
2039                         break;
2040
2041
2042                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
2043                         {
2044                         s4 i, l;
2045                         branch_target_t *table;
2046
2047                         table = iptr->dst.table;
2048
2049                         l = iptr->sx.s23.s2.tablelow;
2050                         i = iptr->sx.s23.s3.tablehigh;
2051
2052                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2053                         if (l == 0) {
2054                                 M_INTMOVE(s1, REG_ITMP1);
2055                         } else if (l <= 32768) {
2056                                 M_LDA(REG_ITMP1, s1, -l);
2057                         } else {
2058                                 ICONST(REG_ITMP2, l);
2059                                 M_SUB(s1, REG_ITMP2, REG_ITMP1);
2060                         }
2061
2062                         /* number of targets */
2063                         i = i - l + 1;
2064
2065                         /* range check */
2066
2067                         M_CMPUI(REG_ITMP1, i - 1);
2068                         M_BGT(0);
2069                         codegen_addreference(cd, table[0].block);
2070
2071                         /* build jump table top down and use address of lowest entry */
2072
2073                         table += i;
2074
2075                         while (--i >= 0) {
2076                                 dseg_add_target(cd, table->block);
2077                                 --table;
2078                                 }
2079                         }
2080
2081                         /* length of dataseg after last dseg_add_unique_target is used by load */
2082
2083                         M_SLL_IMM(REG_ITMP1, 3, REG_ITMP1);
2084                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
2085                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
2086                         M_MTCTR(REG_ITMP2);
2087                         M_RTS;
2088                         ALIGNCODENOP;
2089                         break;
2090
2091
2092                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
2093                         {
2094                         s4 i, val;
2095                         lookup_target_t *lookup;
2096
2097                         lookup = iptr->dst.lookup;
2098
2099                         i = iptr->sx.s23.s2.lookupcount;
2100
2101                         MCODECHECK((i<<2)+8);
2102                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2103                         while (--i >= 0) {
2104                                 val = lookup->value;
2105                                 if ((val >= -32768) && (val <= 32767)) {
2106                                         M_CMPI(s1, val);
2107                                 } else {
2108                                         a = dseg_add_s4(cd, val);
2109                                         M_ILD(REG_ITMP2, REG_PV, a);
2110                                         M_CMP(s1, REG_ITMP2);
2111                                 }
2112                                 M_BEQ(0);
2113                                 codegen_addreference(cd, lookup->target.block);
2114                                 ++lookup;
2115                         }
2116
2117                         M_BR(0);
2118                         codegen_addreference(cd, iptr->sx.s23.s3.lookupdefault.block);
2119
2120                         ALIGNCODENOP;
2121                         break;
2122                         }
2123
2124
2125                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2126
2127                         bte = iptr->sx.s23.s3.bte;
2128                         md = bte->md;
2129                         goto gen_method;
2130
2131                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2132                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2133                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2134                 case ICMD_INVOKEINTERFACE:
2135
2136                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2137
2138                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2139                                 md = iptr->sx.s23.s3.um->methodref->parseddesc.md;
2140                                 lm = NULL;
2141                         }
2142                         else {
2143                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2144                                 md = lm->parseddesc;
2145                         }
2146
2147 gen_method:
2148                         s3 = md->paramcount;
2149
2150                         MCODECHECK((s3 << 1) + 64);
2151
2152                         /* copy arguments to registers or stack location */
2153
2154                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2155                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2156
2157                                 if (var->flags & PREALLOC)
2158                                         continue;
2159
2160                                 if (IS_INT_LNG_TYPE(var->type)) {
2161                                         if (!md->params[s3].inmemory) {
2162                                                 s1 = rd->argintregs[md->params[s3].regoff];
2163                                                 d = emit_load(jd, iptr, var, s1);
2164                                                 M_LNGMOVE(d, s1);
2165                                         } else {
2166                                                 d = emit_load(jd, iptr, var, REG_ITMP1);
2167                                                 M_LST(d, REG_SP, md->params[s3].regoff * 8);
2168                                         }
2169                                 } else {
2170                                         if (!md->params[s3].inmemory) {
2171                                                 s1 = rd->argfltregs[md->params[s3].regoff];
2172                                                 d = emit_load(jd, iptr, var, s1);
2173                                                 M_FLTMOVE(d, s1);
2174                                         } else {
2175                                                 d = emit_load(jd, iptr, var, REG_FTMP1);
2176                                                 if (IS_2_WORD_TYPE(var->type))
2177                                                         M_DST(d, REG_SP, md->params[s3].regoff * 8);
2178                                                 else
2179                                                         M_DST(d, REG_SP, md->params[s3].regoff * 8);    /* F XXX */
2180                                         }
2181                                 }
2182                         } /* end of for */
2183
2184                         switch (iptr->opc) {
2185                         case ICMD_BUILTIN:
2186                                 disp = dseg_add_functionptr(cd, bte->fp);
2187                                 d = md->returntype.type;
2188
2189                                 M_ALD(REG_PV, REG_PV, disp);    /* pointer to built-in-function descriptor */
2190                                 M_ALD(REG_ITMP1, REG_PV, 0);    /* function entry point address, what about TOC */
2191                                 M_MTCTR(REG_ITMP1);
2192                                 M_JSR;
2193                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2194                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2195                                 M_MFLR(REG_ITMP1);
2196                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2197
2198                                 if (INSTRUCTION_MUST_CHECK(iptr)) {
2199                                         M_CMPI(REG_RESULT, 0);
2200                                         M_BEQ(0);
2201                                         codegen_add_fillinstacktrace_ref(cd);
2202                                 }
2203                                 break;
2204
2205                         case ICMD_INVOKESPECIAL:
2206                                 gen_nullptr_check(rd->argintregs[0]);
2207                                 M_ILD(REG_ITMP1, rd->argintregs[0], 0); /* hardware nullptr   */
2208                                 /* fall through */
2209
2210                         case ICMD_INVOKESTATIC:
2211                                 if (lm == NULL) {
2212                                         unresolved_method *um = iptr->sx.s23.s3.um;
2213
2214                                         disp = dseg_add_unique_address(cd, NULL);
2215
2216                                         codegen_addpatchref(cd, PATCHER_invokestatic_special,
2217                                                                                 um, disp);
2218
2219                                         if (opt_showdisassemble)
2220                                                 M_NOP;
2221
2222                                         d = md->returntype.type;
2223
2224                                 } else {
2225                                         disp = dseg_add_address(cd, lm->stubroutine);
2226                                         d = md->returntype.type;
2227                                 }
2228
2229                                 M_NOP;
2230                                 M_ALD(REG_PV, REG_PV, disp);
2231                                 M_MTCTR(REG_PV);
2232                                 M_JSR;
2233                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2234                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2235                                 M_MFLR(REG_ITMP1);
2236                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2237                                 break;
2238
2239                         case ICMD_INVOKEVIRTUAL:
2240                                 gen_nullptr_check(rd->argintregs[0]);
2241
2242                                 if (lm == NULL) {
2243                                         unresolved_method *um = iptr->sx.s23.s3.um;
2244
2245                                         codegen_addpatchref(cd, PATCHER_invokevirtual, um, 0);
2246
2247                                         if (opt_showdisassemble)
2248                                                 M_NOP;
2249
2250                                         s1 = 0;
2251                                         d = md->returntype.type;
2252
2253                                 } else {
2254                                         s1 = OFFSET(vftbl_t, table[0]) +
2255                                                 sizeof(methodptr) * lm->vftblindex;
2256                                         d = md->returntype.type;
2257                                 }
2258
2259                                 M_ALD(REG_METHODPTR, rd->argintregs[0],
2260                                           OFFSET(java_objectheader, vftbl));
2261                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2262                                 M_MTCTR(REG_PV);
2263                                 M_JSR;
2264                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2265                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2266                                 M_MFLR(REG_ITMP1);
2267                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2268                                 break;
2269
2270                         case ICMD_INVOKEINTERFACE:
2271                                 gen_nullptr_check(rd->argintregs[0]);
2272
2273                                 if (lm == NULL) {
2274                                         unresolved_method *um = iptr->sx.s23.s3.um;
2275
2276                                         codegen_addpatchref(cd, PATCHER_invokeinterface, um, 0);
2277
2278                                         if (opt_showdisassemble)
2279                                                 M_NOP;
2280
2281                                         s1 = 0;
2282                                         s2 = 0;
2283                                         d = md->returntype.type;
2284
2285                                 } else {
2286                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2287                                                 sizeof(methodptr*) * lm->class->index;
2288
2289                                         s2 = sizeof(methodptr) * (lm - lm->class->methods);
2290
2291                                         d = md->returntype.type;
2292                                 }
2293
2294                                 M_ALD(REG_METHODPTR, rd->argintregs[0],
2295                                           OFFSET(java_objectheader, vftbl));
2296                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2297                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2298                                 M_MTCTR(REG_PV);
2299                                 M_JSR;
2300                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2301                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2302                                 M_MFLR(REG_ITMP1);
2303                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2304                                 break;
2305                         }
2306
2307                         /* d contains return type */
2308
2309                         if (d != TYPE_VOID) {
2310                                 if (IS_INT_LNG_TYPE(d)) {
2311                                         s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2312                                         M_MOV(REG_RESULT, s1);
2313                                 }
2314                                 else {
2315                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2316                                         M_FLTMOVE(REG_FRESULT, s1);
2317                                 }
2318                                 emit_store_dst(jd, iptr, s1);
2319                         }
2320                         break;
2321
2322
2323                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2324                                       /* val.a: (classinfo*) superclass               */
2325
2326                         /*  superclass is an interface:
2327                          *
2328                          *  OK if ((sub == NULL) ||
2329                          *         (sub->vftbl->interfacetablelength > super->index) &&
2330                          *         (sub->vftbl->interfacetable[-super->index] != NULL));
2331                          *
2332                          *  superclass is a class:
2333                          *
2334                          *  OK if ((sub == NULL) || (0
2335                          *         <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2336                          *         super->vftbl->diffvall));
2337                          */
2338
2339                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2340                                 /* object type cast-check */
2341
2342                                 classinfo *super;
2343                                 s4         superindex;
2344
2345                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2346                                         super = NULL;
2347                                         superindex = 0;
2348                                 } else {
2349                                         super = iptr->sx.s23.s3.c.cls;
2350                                         superindex = super->index;
2351                                 }
2352
2353 #if defined(ENABLE_THREADS)
2354                                 codegen_threadcritrestart(cd, cd->mcodeptr - cd->mcodebase);
2355 #endif
2356                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2357
2358                                 /* calculate interface checkcast code size */
2359
2360                                 s2 = 7;
2361                                 if (super == NULL)
2362                                         s2 += (opt_showdisassemble ? 1 : 0);
2363
2364                                 /* calculate class checkcast code size */
2365
2366                                 s3 = 9 + (s1 == REG_ITMP1);
2367                                 if (super == NULL)
2368                                         s3 += (opt_showdisassemble ? 1 : 0);
2369
2370                                 /* if class is not resolved, check which code to call */
2371
2372                                 if (super == NULL) {
2373                                         M_TST(s1);
2374                                         M_BEQ(3 + (opt_showdisassemble ? 1 : 0) + s2 + 1 + s3);
2375
2376                                         disp = dseg_add_s4(cd, 0);                     /* super->flags */
2377
2378                                         codegen_addpatchref(cd,
2379                                                                                 PATCHER_checkcast_instanceof_flags,
2380                                                                                 iptr->sx.s23.s3.c.ref,
2381                                                                                 disp);
2382
2383                                         if (opt_showdisassemble)
2384                                                 M_NOP;
2385
2386                                         M_ILD(REG_ITMP2, REG_PV, disp);
2387                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2388                                         M_BEQ(s2 + 1);
2389                                 }
2390
2391                                 /* interface checkcast code */
2392
2393                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2394                                         if (super == NULL) {
2395                                                 codegen_addpatchref(cd,
2396                                                                                         PATCHER_checkcast_instanceof_interface,
2397                                                                                         iptr->sx.s23.s3.c.ref,
2398                                                                                         0);
2399                                                 if (opt_showdisassemble)
2400                                                         M_NOP;
2401
2402                                         } else {
2403                                                 M_TST(s1);
2404                                                 M_BEQ(s2);
2405                                         }
2406
2407                                         M_ALD(REG_ITMP2, s1, OFFSET(java_objectheader, vftbl));
2408                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2409                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2410                                         M_BLE(0);
2411                                         codegen_add_classcastexception_ref(cd, s1);     /*XXX s1?? */
2412                                         M_ALD(REG_ITMP3, REG_ITMP2,
2413                                                   OFFSET(vftbl_t, interfacetable[0]) -
2414                                                   superindex * sizeof(methodptr*));
2415                                         M_TST(REG_ITMP3);
2416                                         M_BEQ(0);
2417                                         codegen_add_classcastexception_ref(cd, s1);     /*XXX s1??*/
2418
2419                                         if (!super)
2420                                                 M_BR(s3);
2421                                 }
2422
2423                                 /* class checkcast code */
2424
2425                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2426                                         if (super == NULL) {
2427                                                 disp = dseg_add_address(cd, NULL);
2428                                                 codegen_addpatchref(cd, PATCHER_checkcast_class,
2429                                                                                         iptr->sx.s23.s3.c.ref,
2430                                                                                         disp);
2431                                                 if (opt_showdisassemble)
2432                                                         M_NOP;
2433                                         } else {
2434                                                 disp = dseg_add_address(cd, super->vftbl);
2435                                                 M_TST(s1);
2436                                                 M_BEQ(s3);
2437                                         }
2438
2439                                         M_ALD(REG_ITMP2, s1, OFFSET(java_objectheader, vftbl));
2440 #if defined(ENABLE_THREADS)
2441                                         codegen_threadcritstart(cd, cd->mcodeptr - cd->mcodebase);
2442 #endif
2443                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2444                                         M_ALD(REG_ITMP2, REG_PV, disp);
2445                                         if (s1 != REG_ITMP1) {
2446                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2447                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2448 #if defined(ENABLE_THREADS)
2449                                                 codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase);
2450 #endif
2451                                                 M_SUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2452                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2453                                         } else {
2454                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2455                                                 M_SUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2456                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2457                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2458                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2459 #if defined(ENABLE_THREADS)
2460                                                 codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase);
2461 #endif
2462                                         }
2463                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2464                                         M_BGT(0);
2465                                         codegen_add_classcastexception_ref(cd, s1); /* XXX s1? */
2466                                 }
2467                                 d = codegen_reg_of_dst(jd, iptr, s1);
2468
2469                         } else {
2470                                 /* array type cast-check */
2471
2472                                 s1 = emit_load_s1(jd, iptr, rd->argintregs[0]);
2473                                 M_INTMOVE(s1, rd->argintregs[0]);
2474
2475
2476                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2477                                         disp = dseg_add_address(cd, NULL);
2478                                         codegen_addpatchref(cd, PATCHER_builtin_arraycheckcast,
2479                                                                                 iptr->sx.s23.s3.c.ref,
2480                                                                                 disp);
2481
2482                                         if (opt_showdisassemble)
2483                                                 M_NOP;
2484                                 } else {
2485                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2486                                 }
2487
2488                                 M_ALD(rd->argintregs[1], REG_PV, disp);
2489                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2490                                 M_ALD(REG_ITMP2, REG_PV, disp);
2491                                 M_ALD(REG_ITMP2, REG_ITMP2, 0); /* TOC */
2492                                 M_MTCTR(REG_ITMP2);
2493                                 M_JSR;
2494                                 M_TST(REG_RESULT);
2495                                 M_BEQ(0);
2496                                 codegen_add_classcastexception_ref(cd, s1); /* XXX s1? */
2497
2498                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2499                                 d = codegen_reg_of_dst(jd, iptr, s1);
2500                         }
2501                         M_INTMOVE(s1, d);
2502                         emit_store_dst(jd, iptr, d);
2503                         break;
2504
2505                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2506                                       /* val.a: (classinfo*) superclass               */
2507
2508                         /*  superclass is an interface:
2509                          *
2510                          *  return (sub != NULL) &&
2511                          *         (sub->vftbl->interfacetablelength > super->index) &&
2512                          *         (sub->vftbl->interfacetable[-super->index] != NULL);
2513                          *
2514                          *  superclass is a class:
2515                          *
2516                          *  return ((sub != NULL) && (0
2517                          *          <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2518                          *          super->vftbl->diffvall));
2519                          */
2520
2521                         {
2522                         classinfo *super;
2523                         vftbl_t   *supervftbl;
2524                         s4         superindex;
2525
2526                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2527                                 super = NULL;
2528                                 superindex = 0;
2529                                 supervftbl = NULL;
2530                         }
2531                         else {
2532                                 super = iptr->sx.s23.s3.c.cls;
2533                                 superindex = super->index;
2534                                 supervftbl = super->vftbl;
2535                         }
2536
2537 #if defined(ENABLE_THREADS)
2538             codegen_threadcritrestart(cd, cd->mcodeptr - cd->mcodebase);
2539 #endif
2540                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2541                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2542                         if (s1 == d) {
2543                                 M_MOV(s1, REG_ITMP1);
2544                                 s1 = REG_ITMP1;
2545                         }
2546
2547                         /* calculate interface instanceof code size */
2548
2549                         s2 = 8;
2550                         if (!super)
2551                                 s2 += (opt_showdisassemble ? 1 : 0);
2552
2553                         /* calculate class instanceof code size */
2554
2555                         s3 = 10;
2556                         if (!super)
2557                                 s3 += (opt_showdisassemble ? 1 : 0);
2558
2559                         M_CLR(d);
2560
2561                         /* if class is not resolved, check which code to call */
2562
2563                         if (!super) {
2564                                 M_TST(s1);
2565                                 M_BEQ(3 + (opt_showdisassemble ? 1 : 0) + s2 + 1 + s3);
2566
2567                                 disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2568
2569                                 codegen_addpatchref(cd, PATCHER_checkcast_instanceof_flags,
2570                                                                         iptr->sx.s23.s3.c.ref, disp);
2571
2572                                 if (opt_showdisassemble)
2573                                         M_NOP;
2574
2575                                 M_ILD(REG_ITMP3, REG_PV, disp);
2576                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2577                                 M_BEQ(s2 + 1);
2578                         }
2579
2580                         /* interface instanceof code */
2581
2582                         if (!super || (super->flags & ACC_INTERFACE)) {
2583                                 if (super) {
2584                                         M_TST(s1);
2585                                         M_BEQ(s2);
2586
2587                                 } else {
2588                                         codegen_addpatchref(cd,
2589                                                                                 PATCHER_checkcast_instanceof_interface,
2590                                                                                 iptr->sx.s23.s3.c.ref, 0);
2591
2592                                         if (opt_showdisassemble)
2593                                                 M_NOP;
2594                                 }
2595
2596                                 M_ALD(REG_ITMP1, s1, OFFSET(java_objectheader, vftbl));
2597                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2598                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2599                                 M_BLE(4);
2600                                 M_ALD(REG_ITMP1, REG_ITMP1,
2601                                           OFFSET(vftbl_t, interfacetable[0]) -
2602                                           superindex * sizeof(methodptr*));
2603                                 M_TST(REG_ITMP1);
2604                                 M_BEQ(1);
2605                                 M_IADD_IMM(REG_ZERO, 1, d);
2606
2607                                 if (!super)
2608                                         M_BR(s3);
2609                         }
2610
2611                         /* class instanceof code */
2612
2613                         if (!super || !(super->flags & ACC_INTERFACE)) {
2614                                 disp = dseg_add_address(cd, supervftbl);
2615
2616                                 if (super) {
2617                                         M_TST(s1);
2618                                         M_BEQ(s3);
2619
2620                                 } else {
2621                                         codegen_addpatchref(cd, PATCHER_instanceof_class,
2622                                                                                 iptr->sx.s23.s3.c.ref,
2623                                                                                 disp);
2624
2625                                         if (opt_showdisassemble) {
2626                                                 M_NOP;
2627                                         }
2628                                 }
2629
2630                                 M_ALD(REG_ITMP1, s1, OFFSET(java_objectheader, vftbl));
2631                                 M_ALD(REG_ITMP2, REG_PV, disp);
2632 #if defined(ENABLE_THREADS)
2633                                 codegen_threadcritstart(cd, cd->mcodeptr - cd->mcodebase);
2634 #endif
2635                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2636                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2637                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2638 #if defined(ENABLE_THREADS)
2639                                 codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase);
2640 #endif
2641                                 M_SUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2642                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2643                                 M_CLR(d);
2644                                 M_BGT(1);
2645                                 M_IADD_IMM(REG_ZERO, 1, d);
2646                         }
2647                         emit_store_dst(jd, iptr, d);
2648                         }
2649                         break;
2650
2651                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2652
2653                         /* check for negative sizes and copy sizes to stack if necessary  */
2654
2655                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2656
2657                         for (s1 = iptr->s1.argcount; --s1 >= 0; ) {
2658
2659                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2660
2661                                 /* copy SAVEDVAR sizes to stack */
2662
2663                                 if (!(var->flags & PREALLOC)) {
2664                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2665 #if defined(__DARWIN__)
2666                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 8);
2667 #else
2668                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + 3) * 8);
2669 #endif
2670                                 }
2671                         }
2672
2673                         /* a0 = dimension count */
2674
2675                         ICONST(rd->argintregs[0], iptr->s1.argcount);
2676
2677                         /* is patcher function set? */
2678
2679                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2680                                 disp = dseg_add_address(cd, NULL);
2681
2682                                 codegen_addpatchref(cd, PATCHER_builtin_multianewarray,
2683                                                                         iptr->sx.s23.s3.c.ref, disp);
2684
2685                                 if (opt_showdisassemble)
2686                                         M_NOP;
2687
2688                         } else {
2689                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2690                         }
2691
2692                         /* a1 = arraydescriptor */
2693
2694                         M_ALD(rd->argintregs[1], REG_PV, disp);
2695
2696                         /* a2 = pointer to dimensions = stack pointer */
2697
2698 #if defined(__DARWIN__)
2699                         M_LDA(rd->argintregs[2], REG_SP, LA_SIZE + INT_ARG_CNT * 8);
2700 #else
2701                         M_LDA(rd->argintregs[2], REG_SP, LA_SIZE + 3 * 8);
2702 #endif
2703
2704                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2705                         M_ALD(REG_ITMP3, REG_PV, disp);
2706                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
2707                         M_MTCTR(REG_ITMP3);
2708                         M_JSR;
2709
2710                         /* check for exception before result assignment */
2711
2712                         M_CMPI(REG_RESULT, 0);
2713                         M_BEQ(0);
2714                         codegen_add_fillinstacktrace_ref(cd);
2715
2716                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2717                         M_INTMOVE(REG_RESULT, d);
2718                         emit_store_dst(jd, iptr, d);
2719                         break;
2720
2721                 default:
2722                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2723                                                                                    iptr->opc);
2724                         return false;
2725         } /* switch */
2726
2727         } /* for instruction */
2728
2729         } /* if (bptr -> flags >= BBREACHED) */
2730         } /* for basic block */
2731
2732         dseg_createlinenumbertable(cd);
2733
2734
2735         /* generate exception and patcher stubs */
2736
2737         {
2738                 exceptionref *eref;
2739                 patchref     *pref;
2740                 u4            mcode;
2741                 u1           *savedmcodeptr;
2742                 u1           *tmpmcodeptr;
2743
2744                 savedmcodeptr = NULL;
2745
2746                 /* generate exception stubs */
2747
2748                 for (eref = cd->exceptionrefs; eref != NULL; eref = eref->next) {
2749                         md_codegen_patch_branch(cd, eref->branchpos, cd->mcodeptr - cd->mcodebase);
2750
2751                         MCODECHECK(100);
2752
2753                         /* Check if the exception is an
2754                            ArrayIndexOutOfBoundsException.  If so, move index register
2755                            into REG_ITMP1. */
2756
2757                         if (eref->reg != -1)
2758                                 M_MOV(eref->reg, REG_ITMP1);
2759
2760                         /* calcuate exception address */
2761
2762                         M_LDA(REG_ITMP2_XPC, REG_PV, eref->branchpos - 4);
2763
2764                         /* move function to call into REG_ITMP3 */
2765
2766                         disp = dseg_add_functionptr(cd, eref->function);
2767                         M_ALD(REG_ITMP3, REG_PV, disp);
2768                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
2769
2770                         if (savedmcodeptr != NULL) {
2771                                 disp = ((u4 *) savedmcodeptr) - (((u4 *) cd->mcodeptr) + 1);
2772                                 M_BR(disp);
2773
2774                         } else {
2775                                 savedmcodeptr = cd->mcodeptr;
2776
2777                                 if (jd->isleafmethod) {
2778                                         M_MFLR(REG_ZERO);
2779                                         M_AST(REG_ZERO, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2780                                 }
2781
2782                                 M_MOV(REG_PV, rd->argintregs[0]);
2783                                 M_MOV(REG_SP, rd->argintregs[1]);
2784
2785                                 if (jd->isleafmethod)
2786                                         M_MOV(REG_ZERO, rd->argintregs[2]);
2787                                 else
2788                                         M_ALD(rd->argintregs[2],
2789                                                   REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2790
2791                                 M_MOV(REG_ITMP2_XPC, rd->argintregs[3]);
2792                                 M_MOV(REG_ITMP1, rd->argintregs[4]);
2793
2794                                 M_STDU(REG_SP, REG_SP, -(LA_SIZE + 6 * 8));
2795                                 M_AST(REG_ITMP2_XPC, REG_SP, LA_SIZE + 5 * 8);
2796
2797                                 M_MTCTR(REG_ITMP3);
2798                                 M_JSR;
2799                                 M_MOV(REG_RESULT, REG_ITMP1_XPTR);
2800
2801                                 M_ALD(REG_ITMP2_XPC, REG_SP, LA_SIZE + 5 * 8);
2802                                 M_LADD_IMM(REG_SP, LA_SIZE + 6 * 8, REG_SP);
2803
2804                                 if (jd->isleafmethod) {
2805                                         /* XXX FIXME: REG_ZERO can cause problems here! */
2806                                         assert(cd->stackframesize * 8 <= 32767);
2807
2808                                         M_ALD(REG_ZERO, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2809                                         M_MTLR(REG_ZERO);
2810                                 }
2811
2812                                 disp = dseg_add_functionptr(cd, asm_handle_exception);
2813                                 M_ALD(REG_ITMP3, REG_PV, disp);
2814                                 M_MTCTR(REG_ITMP3);
2815                                 M_RTS;
2816                         }
2817                 }
2818
2819
2820                 /* generate code patching stub call code */
2821
2822                 for (pref = cd->patchrefs; pref != NULL; pref = pref->next) {
2823                         /* check code segment size */
2824
2825                         MCODECHECK(16);
2826
2827                         /* Get machine code which is patched back in later. The
2828                            call is 1 instruction word long. */
2829
2830                         tmpmcodeptr = (u1 *) (cd->mcodebase + pref->branchpos);
2831
2832                         mcode = *((u4 *) tmpmcodeptr);
2833
2834                         /* Patch in the call to call the following code (done at
2835                            compile time). */
2836
2837                         savedmcodeptr = cd->mcodeptr;   /* save current mcodeptr          */
2838                         cd->mcodeptr  = tmpmcodeptr;    /* set mcodeptr to patch position */
2839
2840                         disp = ((u4 *) savedmcodeptr) - (((u4 *) tmpmcodeptr) + 1);
2841                         M_BR(disp);
2842
2843                         cd->mcodeptr = savedmcodeptr;   /* restore the current mcodeptr   */
2844
2845                         /* create stack frame - keep stack 16-byte aligned */
2846
2847                         M_AADD_IMM(REG_SP, -8 * 8, REG_SP);
2848
2849                         /* calculate return address and move it onto the stack */
2850
2851                         M_LDA(REG_ITMP3, REG_PV, pref->branchpos);
2852                         M_AST_INTERN(REG_ITMP3, REG_SP, 5 * 8);
2853
2854                         /* move pointer to java_objectheader onto stack */
2855
2856 #if defined(ENABLE_THREADS)
2857                         /* order reversed because of data segment layout */
2858
2859                         (void) dseg_add_unique_address(cd, NULL);                         /* flcword    */
2860                         (void) dseg_add_unique_address(cd, lock_get_initial_lock_word()); /* monitorPtr */
2861                         disp = dseg_add_unique_address(cd, NULL);                         /* vftbl      */
2862
2863                         M_LDA(REG_ITMP3, REG_PV, disp);
2864                         M_AST_INTERN(REG_ITMP3, REG_SP, 4 * 8);
2865 #else
2866                         /* do nothing */
2867 #endif
2868
2869                         /* move machine code onto stack */
2870
2871                         disp = dseg_add_unique_s4(cd, mcode);
2872                         M_ILD(REG_ITMP3, REG_PV, disp);
2873                         M_IST_INTERN(REG_ITMP3, REG_SP, 3 * 8);
2874
2875                         /* move class/method/field reference onto stack */
2876
2877                         disp = dseg_add_unique_address(cd, pref->ref);
2878                         M_ALD(REG_ITMP3, REG_PV, disp);
2879                         M_AST_INTERN(REG_ITMP3, REG_SP, 2 * 8);
2880
2881                         /* move data segment displacement onto stack */
2882
2883                         disp = dseg_add_functionptr(cd, pref->disp);
2884                         M_LLD(REG_ITMP3, REG_PV, disp);
2885                         M_IST_INTERN(REG_ITMP3, REG_SP, 1 * 8);
2886
2887                         /* move patcher function pointer onto stack */
2888
2889                         disp = dseg_add_functionptr(cd, pref->patcher);
2890                         M_ALD(REG_ITMP3, REG_PV, disp);
2891                         M_AST_INTERN(REG_ITMP3, REG_SP, 0 * 8);
2892
2893                         disp = dseg_add_functionptr(cd, asm_patcher_wrapper);
2894                         M_ALD(REG_ITMP3, REG_PV, disp);
2895                         M_MTCTR(REG_ITMP3);
2896                         M_RTS;
2897                 }
2898
2899                 /* generate replacement-out stubs */
2900
2901 #if 0
2902                 {
2903                         int i;
2904
2905                         replacementpoint = jd->code->rplpoints;
2906
2907                         for (i = 0; i < jd->code->rplpointcount; ++i, ++replacementpoint) {
2908                                 /* check code segment size */
2909
2910                                 MCODECHECK(100);
2911
2912                                 /* note start of stub code */
2913
2914                                 replacementpoint->outcode = (u1 *) (cd->mcodeptr - cd->mcodebase);
2915
2916                                 /* make machine code for patching */
2917
2918                                 tmpmcodeptr  = cd->mcodeptr;
2919                                 cd->mcodeptr = (u1 *) &(replacementpoint->mcode) + 1 /* big-endian */;
2920
2921                                 disp = (ptrint)((s4*)replacementpoint->outcode - (s4*)replacementpoint->pc) - 1;
2922                                 M_BR(disp);
2923
2924                                 cd->mcodeptr = tmpmcodeptr;
2925
2926                                 /* create stack frame - keep 16-byte aligned */
2927
2928                                 M_AADD_IMM(REG_SP, -4 * 4, REG_SP);
2929
2930                                 /* push address of `rplpoint` struct */
2931
2932                                 disp = dseg_add_unique_address(cd, replacementpoint);
2933                                 M_ALD(REG_ITMP3, REG_PV, disp);
2934                                 M_AST_INTERN(REG_ITMP3, REG_SP, 0 * 4);
2935
2936                                 /* jump to replacement function */
2937
2938                                 disp = dseg_add_unique_address(cd, asm_replacement_out);
2939                                 M_ALD(REG_ITMP3, REG_PV, disp);
2940                                 M_MTCTR(REG_ITMP3);
2941                                 M_RTS;
2942                         }
2943                 }
2944 #endif
2945         }
2946
2947         codegen_finish(jd);
2948
2949         /* everything's ok */
2950
2951         return true;
2952 }
2953
2954
2955 /* createcompilerstub **********************************************************
2956
2957    Creates a stub routine which calls the compiler.
2958
2959 *******************************************************************************/
2960
2961 #define COMPILERSTUB_DATASIZE    3 * SIZEOF_VOID_P
2962 #define COMPILERSTUB_CODESIZE    4 * 4
2963
2964 #define COMPILERSTUB_SIZE        COMPILERSTUB_DATASIZE + COMPILERSTUB_CODESIZE
2965
2966
2967 u1 *createcompilerstub(methodinfo *m)
2968 {
2969         u1          *s;                     /* memory to hold the stub            */
2970         ptrint      *d;
2971         codegendata *cd;
2972         s4           dumpsize;
2973
2974         s = CNEW(u1, COMPILERSTUB_SIZE);
2975
2976         /* set data pointer and code pointer */
2977
2978         d = (ptrint *) s;
2979         s = s + COMPILERSTUB_DATASIZE;
2980
2981         /* mark start of dump memory area */
2982
2983         dumpsize = dump_size();
2984
2985         cd = DNEW(codegendata);
2986         cd->mcodeptr = s;
2987
2988         /* Store the codeinfo pointer in the same place as in the
2989            methodheader for compiled methods. */
2990
2991         d[0] = (ptrint) asm_call_jit_compiler;
2992         d[1] = (ptrint) m;
2993         d[2] = (ptrint) &d[1];                                    /* fake code->m */
2994
2995         M_ALD_INTERN(REG_ITMP1, REG_PV, -2 * SIZEOF_VOID_P);
2996         M_ALD_INTERN(REG_PV, REG_PV, -3 * SIZEOF_VOID_P);
2997         M_MTCTR(REG_PV);
2998         M_RTS;
2999
3000         md_cacheflush((u1 *) d, COMPILERSTUB_SIZE);
3001
3002 #if defined(ENABLE_STATISTICS)
3003         if (opt_stat)
3004                 count_cstub_len += COMPILERSTUB_SIZE;
3005 #endif
3006
3007         /* release dump area */
3008
3009         dump_release(dumpsize);
3010
3011         return s;
3012 }
3013
3014
3015 /* createnativestub ************************************************************
3016
3017    Creates a stub routine which calls a native method.
3018
3019 *******************************************************************************/
3020
3021 u1 *createnativestub(functionptr f, jitdata *jd, methoddesc *nmd)
3022 {
3023         methodinfo   *m;
3024         codeinfo     *code;
3025         codegendata  *cd;
3026         registerdata *rd;
3027         methoddesc   *md;
3028         s4            nativeparams;
3029         s4            i, j;                 /* count variables                    */
3030         s4            t;
3031         s4            s1, s2, disp;
3032         s4            funcdisp;
3033
3034         /* get required compiler data */
3035
3036         m    = jd->m;
3037         code = jd->code;
3038         cd   = jd->cd;
3039         rd   = jd->rd;
3040
3041         /* set some variables */
3042
3043         md = m->parseddesc;
3044         nativeparams = (m->flags & ACC_STATIC) ? 2 : 1;
3045
3046         /* calculate stackframe size */
3047
3048         cd->stackframesize =
3049                 sizeof(stackframeinfo) / SIZEOF_VOID_P +
3050                 sizeof(localref_table) / SIZEOF_VOID_P +
3051                 4 +                            /* 4 stackframeinfo arguments (darwin)*/
3052                 nmd->paramcount  +
3053                 nmd->memuse;
3054
3055 /*      cd->stackframesize = (cd->stackframesize + 3) & ~3;*/ /* keep stack 16-byte aligned */
3056
3057         /* create method header */
3058
3059         (void) dseg_add_unique_address(cd, code);                      /* CodeinfoPointer */
3060         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8);             /* FrameSize       */
3061         (void) dseg_add_unique_s4(cd, 0);                              /* IsSync          */
3062         (void) dseg_add_unique_s4(cd, 0);                              /* IsLeaf          */
3063         (void) dseg_add_unique_s4(cd, 0);                              /* IntSave         */
3064         (void) dseg_add_unique_s4(cd, 0);                              /* FltSave         */
3065         (void) dseg_addlinenumbertablesize(cd);
3066         (void) dseg_add_unique_s4(cd, 0);                              /* ExTableSize     */
3067
3068         /* generate code */
3069
3070         M_MFLR(REG_ZERO);
3071         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
3072         M_STDU(REG_SP, REG_SP, -(cd->stackframesize * 8));
3073
3074 #if !defined(NDEBUG)
3075         if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
3076                 emit_verbosecall_enter(jd);
3077         }
3078 #endif
3079         /* get function address (this must happen before the stackframeinfo) */
3080
3081         funcdisp = dseg_add_functionptr(cd, f);
3082
3083 #if !defined(WITH_STATIC_CLASSPATH)
3084         if (f == NULL) {
3085                 codegen_addpatchref(cd, PATCHER_resolve_native, m, funcdisp);
3086
3087                 if (opt_showdisassemble)
3088                         M_NOP;
3089         }
3090 #endif
3091
3092         /* save integer and float argument registers */
3093
3094         j = 0;
3095
3096         for (i = 0; i < md->paramcount; i++) {
3097                 t = md->paramtypes[i].type;
3098
3099                 if (IS_INT_LNG_TYPE(t)) {
3100                         if (!md->params[i].inmemory) {
3101                                 s1 = md->params[i].regoff;
3102                                 M_LST(rd->argintregs[s1], REG_SP, LA_SIZE + PA_SIZE + 4*8 + j * 8);
3103                                 j++;
3104                         }
3105                 }
3106         }
3107
3108         for (i = 0; i < md->paramcount; i++) {
3109                 if (IS_FLT_DBL_TYPE(md->paramtypes[i].type)) {
3110                         if (!md->params[i].inmemory) {
3111                                 s1 = md->params[i].regoff;
3112                                 M_DST(rd->argfltregs[s1], REG_SP, LA_SIZE + PA_SIZE + 4*8 + j * 8);
3113                                 j++;
3114                         }
3115                 }
3116         }
3117
3118         /* create native stack info */
3119
3120         M_AADD_IMM(REG_SP, cd->stackframesize * 8, rd->argintregs[0]);
3121         M_MOV(REG_PV, rd->argintregs[1]);
3122         M_AADD_IMM(REG_SP, cd->stackframesize * 8, rd->argintregs[2]);
3123         M_ALD(rd->argintregs[3], REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
3124         disp = dseg_add_functionptr(cd, codegen_start_native_call);
3125
3126         M_ALD(REG_ITMP1, REG_PV, disp);
3127         M_ALD(REG_ITMP1, REG_ITMP1, 0);         /* TOC */
3128         M_MTCTR(REG_ITMP1);
3129         M_JSR;
3130
3131         /* restore integer and float argument registers */
3132
3133         j = 0;
3134
3135         for (i = 0; i < md->paramcount; i++) {
3136                 t = md->paramtypes[i].type;
3137
3138                 if (IS_INT_LNG_TYPE(t)) {
3139                         if (!md->params[i].inmemory) {
3140                                 s1 = md->params[i].regoff;
3141                                 M_LLD(rd->argintregs[s1], REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + j * 8);
3142                                 j++;
3143                         }
3144                 }
3145         }
3146
3147         for (i = 0; i < md->paramcount; i++) {
3148                 if (IS_FLT_DBL_TYPE(md->paramtypes[i].type)) {
3149                         if (!md->params[i].inmemory) {
3150                                 s1 = md->params[i].regoff;
3151                                 M_DLD(rd->argfltregs[s1], REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + j * 8);
3152                                 j++;
3153                         }
3154                 }
3155         }
3156
3157         /* copy or spill arguments to new locations */
3158
3159         for (i = md->paramcount - 1, j = i + nativeparams; i >= 0; i--, j--) {
3160                 t = md->paramtypes[i].type;
3161
3162                 if (IS_INT_LNG_TYPE(t)) {
3163                         if (!md->params[i].inmemory) {
3164                                 s1 = rd->argintregs[md->params[i].regoff];
3165
3166                                 if (!nmd->params[j].inmemory) {
3167                                         s2 = rd->argintregs[nmd->params[j].regoff];
3168                                         M_INTMOVE(s1, s2);
3169                                 } else {
3170                                         s2 = nmd->params[j].regoff;
3171                                         M_LST(s1, REG_SP, s2 * 8);
3172                                 }
3173
3174                         } else {
3175                                 s1 = md->params[i].regoff + cd->stackframesize;
3176                                 s2 = nmd->params[j].regoff;
3177
3178                                 M_LLD(REG_ITMP1, REG_SP, s1 * 8);
3179                                 M_LST(REG_ITMP1, REG_SP, s2 * 8);
3180                         }
3181
3182                 } else {
3183                         /* We only copy spilled float arguments, as the float
3184                            argument registers keep unchanged. */
3185
3186                         if (md->params[i].inmemory) {
3187                                 s1 = md->params[i].regoff + cd->stackframesize;
3188                                 s2 = nmd->params[j].regoff;
3189
3190                                 M_DLD(REG_FTMP1, REG_SP, s1 * 8);
3191
3192                                 if (IS_2_WORD_TYPE(t)) {
3193                                         M_DST(REG_FTMP1, REG_SP, s2 * 8);
3194                                 } else {
3195                                         M_FST(REG_FTMP1, REG_SP, s2 * 8 + 4);
3196                                 }
3197                         }
3198                 }
3199         }
3200
3201         /* put class into second argument register */
3202
3203         if (m->flags & ACC_STATIC) {
3204                 disp = dseg_add_unique_address(cd, m->class);
3205                 M_ALD(rd->argintregs[1], REG_PV, disp);
3206         }
3207
3208         /* put env into first argument register */
3209
3210         disp = dseg_add_unique_address(cd, _Jv_env);
3211         M_ALD(rd->argintregs[0], REG_PV, disp);
3212
3213         /* generate the actual native call */
3214         /* native functions have a different TOC for sure */
3215
3216         M_AST(REG_TOC, REG_SP, 40);     /* save old TOC */
3217         M_ALD(REG_ITMP3, REG_PV, funcdisp);
3218         M_ALD(REG_TOC, REG_ITMP3, 8);   /* load TOC from func. descriptor */
3219         M_ALD(REG_ITMP3, REG_ITMP3, 0);
3220         M_MTCTR(REG_ITMP3);
3221         M_JSR;
3222         M_ALD(REG_TOC, REG_SP, 40);     /* restore TOC */
3223
3224         /* save return value */
3225
3226         if (md->returntype.type != TYPE_VOID) {
3227                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
3228                         M_LST(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
3229                 }
3230                 else {
3231 /*                      if (IS_2_WORD_TYPE(md->returntype.type)) */
3232                                 M_DST(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
3233 /*                      else
3234                                 M_FST(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);  */ /* FIXME, needed F XXX?*/
3235
3236                 }
3237         }
3238
3239         /* print call trace */
3240 #if ! defined(NDEBGUU)
3241         if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
3242                 emit_verbosecall_exit(jd);
3243         }
3244 #endif
3245         /* remove native stackframe info */
3246
3247         M_AADD_IMM(REG_SP, cd->stackframesize * 8, rd->argintregs[0]);
3248         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
3249         M_ALD(REG_ITMP1, REG_PV, disp);
3250         M_ALD(REG_ITMP1, REG_ITMP1, 0); /* XXX what about TOC? */
3251         M_MTCTR(REG_ITMP1);
3252         M_JSR;
3253         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
3254
3255         /* restore return value */
3256
3257         if (md->returntype.type != TYPE_VOID) {
3258                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
3259                         M_LLD(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
3260                 }
3261                 else {
3262 /*                      if (IS_2_WORD_TYPE(md->returntype.type)) */
3263                                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8);
3264 /*                      else
3265                                 M_FLD(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 1 * 8); F XXX
3266                                 */
3267                 }
3268         }
3269
3270         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
3271         M_MTLR(REG_ITMP2_XPC);
3272         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe           */
3273
3274         /* check for exception */
3275
3276         M_TST(REG_ITMP1_XPTR);
3277         M_BNE(1);                           /* if no exception then return        */
3278
3279         M_RET;
3280
3281         /* handle exception */
3282
3283         M_LADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
3284
3285         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
3286         M_ALD(REG_ITMP3, REG_PV, disp);
3287         M_MTCTR(REG_ITMP3);
3288         M_RTS;
3289
3290         /* generate patcher stub call code */
3291
3292         {
3293                 patchref *pref;
3294                 u4        mcode;
3295                 u1       *savedmcodeptr;
3296                 u1       *tmpmcodeptr;
3297
3298                 for (pref = cd->patchrefs; pref != NULL; pref = pref->next) {
3299                         /* Get machine code which is patched back in later. The
3300                            call is 1 instruction word long. */
3301
3302                         tmpmcodeptr = cd->mcodebase + pref->branchpos;
3303
3304                         mcode = *((u4 *) tmpmcodeptr);
3305
3306                         /* Patch in the call to call the following code (done at
3307                            compile time). */
3308
3309                         savedmcodeptr = cd->mcodeptr;   /* save current mcodeptr          */
3310                         cd->mcodeptr  = tmpmcodeptr;    /* set mcodeptr to patch position */
3311
3312                         disp = ((u4 *) savedmcodeptr) - (((u4 *) tmpmcodeptr) + 1);
3313                         M_BL(disp);
3314
3315                         cd->mcodeptr = savedmcodeptr;   /* restore the current mcodeptr   */
3316
3317                         /* create stack frame - keep stack 16-byte aligned */
3318
3319                         M_AADD_IMM(REG_SP, -8 * 8, REG_SP);
3320
3321                         /* move return address onto stack */
3322
3323                         M_MFLR(REG_ZERO);
3324                         M_AST(REG_ZERO, REG_SP, 5 * 8);
3325
3326                         /* move pointer to java_objectheader onto stack */
3327
3328 #if defined(ENABLE_THREADS)
3329                         /* order reversed because of data segment layout */
3330
3331                         (void) dseg_add_unique_address(cd, NULL);                         /* flcword    */
3332                         (void) dseg_add_unique_address(cd, lock_get_initial_lock_word()); /* monitorPtr */
3333                         disp = dseg_add_unique_address(cd, NULL);                         /* vftbl      */
3334
3335                         M_LDA(REG_ITMP3, REG_PV, disp);
3336                         M_AST(REG_ITMP3, REG_SP, 4 * 8);
3337 #else
3338                         /* do nothing */
3339 #endif
3340
3341                         /* move machine code onto stack */
3342
3343                         disp = dseg_add_unique_s4(cd, mcode);
3344                         M_ILD(REG_ITMP3, REG_PV, disp);
3345                         M_IST(REG_ITMP3, REG_SP, 3 * 8);
3346
3347                         /* move class/method/field reference onto stack */
3348
3349                         disp = dseg_add_unique_address(cd, pref->ref);
3350                         M_ALD(REG_ITMP3, REG_PV, disp);
3351                         M_AST(REG_ITMP3, REG_SP, 2 * 8);
3352
3353                         /* move data segment displacement onto stack */
3354
3355                         disp = dseg_add_unique_s4(cd, pref->disp);
3356                         M_ILD(REG_ITMP3, REG_PV, disp);
3357                         M_IST(REG_ITMP3, REG_SP, 1 * 8);
3358
3359                         /* move patcher function pointer onto stack */
3360
3361                         disp = dseg_add_functionptr(cd, pref->patcher);
3362                         M_ALD(REG_ITMP3, REG_PV, disp);
3363                         M_AST(REG_ITMP3, REG_SP, 0 * 8);
3364
3365                         disp = dseg_add_functionptr(cd, asm_patcher_wrapper);
3366                         M_ALD(REG_ITMP3, REG_PV, disp);
3367                         M_MTCTR(REG_ITMP3);
3368                         M_RTS;
3369                 }
3370         }
3371
3372         codegen_finish(jd);
3373
3374         return code->entrypoint;
3375 }
3376
3377
3378
3379
3380 /*
3381  * These are local overrides for various environment variables in Emacs.
3382  * Please do not remove this and leave it at the end of the file, where
3383  * Emacs will automagically detect them.
3384  * ---------------------------------------------------------------------
3385  * Local variables:
3386  * mode: c
3387  * indent-tabs-mode: t
3388  * c-basic-offset: 4
3389  * tab-width: 4
3390  * End:
3391  * vim:noexpandtab:sw=4:ts=4:
3392  */