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 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31 #include <stdint.h>
  32 #include <stdio.h>
  33 #include <signal.h>
  34
  35 #include "vm/types.h"
  36
  37 #include "md-abi.h"
  38
  39 #include "vm/jit/powerpc64/arch.h"
  40 #include "vm/jit/powerpc64/codegen.h"
  41
  42 #include "mm/memory.h"
  43
  44 #include "native/localref.h"
  45 #include "native/native.h"
  46
  47 #include "threads/lock-common.h"
  48
  49 #include "vm/builtin.h"
  50 #include "vm/exceptions.h"
  51 #include "vm/global.h"
  52 #include "vm/stringlocal.h"
  53 #include "vm/vm.h"
  54
  55 #include "vm/jit/abi.h"
  56 #include "vm/jit/abi-asm.h"
  57 #include "vm/jit/asmpart.h"
  58 #include "vm/jit/codegen-common.h"
  59 #include "vm/jit/dseg.h"
  60 #include "vm/jit/emit-common.h"
  61 #include "vm/jit/jit.h"
  62 #include "vm/jit/linenumbertable.h"
  63 #include "vm/jit/parse.h"
  64 #include "vm/jit/patcher-common.h"
  65 #include "vm/jit/reg.h"
  66 #include "vm/jit/replace.h"
  67 #include "vm/jit/stacktrace.h"
  68
  69 #include "vmcore/loader.h"
  70 #include "vmcore/options.h"
  71
  72 #if defined(ENABLE_LSRA)
  73 # include "vm/jit/allocator/lsra.h"
  74 #endif
  75
  76
  77 /* codegen_emit ****************************************************************
  78
  79    Generates machine code.
  80
  81 *******************************************************************************/
  82
  83 bool codegen_emit(jitdata *jd)
  84 {
  85         methodinfo         *m;
  86         codeinfo           *code;
  87         codegendata        *cd;
  88         registerdata       *rd;
  89         s4                  len, s1, s2, s3, d, disp;
  90         ptrint              a;
  91         varinfo            *var;
  92         basicblock         *bptr;
  93         instruction        *iptr;
  94         u2                  currentline;
  95         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  96         unresolved_method  *um;
  97         builtintable_entry *bte;
  98         methoddesc         *md;
  99         s4                  fieldtype;
 100         s4                  varindex;
 101         unresolved_field   *uf;
 102         fieldinfo          *fi;
 103
 104         /* get required compiler data */
 105
 106         m    = jd->m;
 107         code = jd->code;
 108         cd   = jd->cd;
 109         rd   = jd->rd;
 110
 111         /* prevent compiler warnings */
 112
 113         d   = 0;
 114         lm  = NULL;
 115         um  = NULL;
 116         bte = NULL;
 117         uf  = NULL;
 118
 119         {
 120         s4 i, p, t, l;
 121         s4 savedregs_num;
 122
 123         savedregs_num = 0;
 124
 125         /* space to save used callee saved registers */
 126
 127         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 128         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 129
 130         cd->stackframesize = rd->memuse + savedregs_num;
 131
 132 #if defined(ENABLE_THREADS)
 133         /* space to save argument of monitor_enter and Return Values to survive */
 134     /* monitor_exit. The stack position for the argument can not be shared  */
 135         /* with place to save the return register on PPC64, since both values     */
 136         /* reside in R3 */
 137         if (checksync && code_is_synchronized(code)) {
 138                 /* reserve 2 slots for long/double return values for monitorexit */
 139                 cd->stackframesize += 2;
 140         }
 141
 142 #endif
 143
 144         /* create method header */
 145
 146         /* align stack to 16-bytes */
 147
 148 /* FIXME */
 149 /*      if (!m->isleafmethod || opt_verbosecall) */
 150 /*              stackframesize = (stackframesize + 3) & ~3;
 151 */
 152 /*      else if (m->isleafmethod && (stackframesize == LA_WORD_SIZE)) */
 153 /*              stackframesize = 0; */
 154
 155         (void) dseg_add_unique_address(cd, code);                      /* CodeinfoPointer */
 156         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8);             /* FrameSize       */
 157
 158         code->synchronizedoffset = rd->memuse * 8;
 159
 160         /* REMOVEME: We still need it for exception handling in assembler. */
 161
 162         if (code_is_leafmethod(code))
 163                 (void) dseg_add_unique_s4(cd, 1);
 164         else
 165                 (void) dseg_add_unique_s4(cd, 0);
 166
 167         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave         */
 168         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave         */
 169
 170         /* create stack frame (if necessary) */
 171
 172         if (!code_is_leafmethod(code)) {
 173                 M_MFLR(REG_ZERO);
 174                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 175         }
 176
 177         if (cd->stackframesize)
 178                 M_STDU(REG_SP, REG_SP, -cd->stackframesize * 8);
 179
 180         /* save return address and used callee saved registers */
 181
 182         p = cd->stackframesize;
 183         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 184                 p--; M_LST(rd->savintregs[i], REG_SP, p * 8);
 185         }
 186         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 187                 p --; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 188         }
 189
 190         /* take arguments out of register or stack frame */
 191
 192         md = m->parseddesc;
 193
 194         for (p = 0, l = 0; p < md->paramcount; p++) {
 195                 t = md->paramtypes[p].type;
 196                 varindex = jd->local_map[l*5 + t];
 197                 l++;
 198                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 199                         l++;
 200                 if (varindex == UNUSED)
 201                         continue;
 202
 203                 var = VAR(varindex);
 204                 s1  = md->params[p].regoff;
 205
 206                 if (IS_INT_LNG_TYPE(t)) {
 207                         if (!md->params[p].inmemory) {
 208                                 if (!IS_INMEMORY(var->flags))
 209                                         M_INTMOVE(s1, var->vv.regoff);
 210                                 else
 211                                         M_LST(s1, REG_SP, var->vv.regoff);
 212                         }
 213                         else {
 214                                 if (!IS_INMEMORY(var->flags))
 215                                         M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 216                                 else
 217                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 218                         }
 219                 }
 220                 else {
 221                         if (!md->params[p].inmemory) {
 222                                 if (!IS_INMEMORY(var->flags))
 223                                         M_FLTMOVE(s1, var->vv.regoff);
 224                                 else
 225                                         M_DST(s1, REG_SP, var->vv.regoff);
 226                         }
 227                         else {
 228                                 if (!(var->flags & INMEMORY)) {
 229                                         if (IS_2_WORD_TYPE(t))
 230                                                 M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 231                                         else
 232                                                 M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 233                                 }
 234                                 else
 235                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 236                         }
 237                 }
 238         }
 239
 240         /* save monitorenter argument */
 241
 242 #if defined(ENABLE_THREADS)
 243
 244         if (checksync && code_is_synchronized(code)) {
 245
 246                 /* stackoffset for argument used for LOCK_monitor_exit */
 247                 s1 = rd->memuse;
 248
 249 #if !defined (NDEBUG)
 250                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 251                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 252
 253                         for (p = 0; p < INT_ARG_CNT; p++)
 254                                 M_LST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 255
 256                         for (p = 0; p < FLT_ARG_CNT; p++)
 257                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 258
 259                         /* used for LOCK_monitor_exit, adopt size because we created another stackframe */
 260                         s1 += (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT);
 261                 }
 262 #endif
 263
 264                 p = dseg_add_functionptr(cd, LOCK_monitor_enter);
 265                 M_ALD(REG_ITMP3, REG_PV, p);
 266                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
 267                 M_MTCTR(REG_ITMP3);
 268
 269                 /* get or test the lock object */
 270
 271                 if (m->flags & ACC_STATIC) {
 272                         p = dseg_add_address(cd, &m->class->object.header);
 273                         M_ALD(REG_A0, REG_PV, p);
 274                 }
 275                 else {
 276                         M_TST(REG_A0);
 277                         M_BNE(1);
 278                         M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
 279                 }
 280
 281                 M_AST(REG_A0, REG_SP, s1 * 8);                      /* rd->memuse * 8 */
 282                 M_JSR;
 283
 284 #if !defined(NDEBUG)
 285                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 286                         for (p = 0; p < INT_ARG_CNT; p++)
 287                                 M_LLD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 288
 289                         for (p = 0; p < FLT_ARG_CNT; p++)
 290                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 291
 292                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 293                 }
 294 #endif
 295         }
 296 #endif
 297
 298         /* call trace function */
 299 #if !defined (NDEBUG)
 300         if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
 301                 emit_verbosecall_enter(jd);
 302 #endif
 303
 304         }
 305
 306         /* end of header generation */
 307
 308         /* create replacement points */
 309
 310         REPLACEMENT_POINTS_INIT(cd, jd);
 311
 312         /* walk through all basic blocks */
 313
 314         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 315
 316                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 317
 318                 if (bptr->flags >= BBREACHED) {
 319
 320                 /* branch resolving */
 321                 codegen_resolve_branchrefs(cd, bptr);
 322
 323                 /* handle replacement points */
 324
 325                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 326
 327                 /* copy interface registers to their destination */
 328
 329                 len = bptr->indepth;
 330                 MCODECHECK(128+len);
 331
 332 #if defined(ENABLE_LSRA)
 333                 if (opt_lsra) {
 334                         while (len) {
 335                                 len--;
 336                                 var = VAR(bptr->invars[len]);
 337                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 338                                         /* d = reg_of_var(m, var, REG_ITMP1); */
 339                                         if (!(var->flags & INMEMORY))
 340                                                 d = var->vv.regoff;
 341                                         else
 342                                                 d = REG_ITMP1;
 343                                         M_INTMOVE(REG_ITMP1, d);
 344                                         emit_store(jd, NULL, var, d);
 345                                 }
 346                         }
 347                 } else {
 348 #endif
 349                 while (len) {
 350                         len--;
 351                         var = VAR(bptr->invars[len]);
 352                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 353                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 354                                 M_INTMOVE(REG_ITMP1, d);
 355                                 emit_store(jd, NULL, var, d);
 356                         }
 357                         else {
 358                                 assert((var->flags & INOUT));
 359                         }
 360                 }
 361
 362 #if defined(ENABLE_LSRA)
 363                 }
 364 #endif
 365                 /* walk through all instructions */
 366
 367                 len = bptr->icount;
 368                 currentline = 0;
 369
 370                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 371                         if (iptr->line != currentline) {
 372                                 linenumbertable_list_entry_add(cd, iptr->line);
 373                                 currentline = iptr->line;
 374                         }
 375
 376                         MCODECHECK(128);   /* an instruction usually needs < 64 words      */
 377
 378                 switch (iptr->opc) {
 379                 case ICMD_NOP:        /* ...  ==> ...                                 */
 380                 case ICMD_POP:        /* ..., value  ==> ...                          */
 381                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 382                         break;
 383
 384                 case ICMD_INLINE_START:
 385
 386                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 387                         break;
 388
 389                 case ICMD_INLINE_BODY:
 390
 391                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 392                         linenumbertable_list_entry_add_inline_start(cd, iptr);
 393                         linenumbertable_list_entry_add(cd, iptr->line);
 394                         break;
 395
 396                 case ICMD_INLINE_END:
 397
 398                         linenumbertable_list_entry_add_inline_end(cd, iptr);
 399                         linenumbertable_list_entry_add(cd, iptr->line);
 400                         break;
 401
 402                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 403
 404                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 405                         M_TST(s1);
 406                         M_BEQ(0);
 407                         emit_nullpointer_check(cd, iptr, s1);
 408                         break;
 409
 410                 /* constant operations ************************************************/
 411
 412                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 413
 414                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 415                         ICONST(d, iptr->sx.val.i);
 416                         emit_store_dst(jd, iptr, d);
 417                         break;
 418
 419                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 420
 421                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 422                         LCONST(d, iptr->sx.val.l);
 423                         emit_store_dst(jd, iptr, d);
 424                         break;
 425
 426                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 427
 428                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 429                         a = dseg_add_float(cd, iptr->sx.val.f);
 430                         M_FLD(d, REG_PV, a);
 431                         emit_store_dst(jd, iptr, d);
 432                         break;
 433
 434                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 435
 436                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 437                         a = dseg_add_double(cd, iptr->sx.val.d);
 438                         M_DLD(d, REG_PV, a);
 439                         emit_store_dst(jd, iptr, d);
 440                         break;
 441
 442                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 443
 444                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 445
 446                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 447                                 disp = dseg_add_unique_address(cd, iptr->sx.val.c.ref);
 448                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
 449                                                                         iptr->sx.val.c.ref,
 450                                                                     disp);
 451                         } else  {
 452                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 453                         }
 454                         M_ALD(d, REG_PV, disp);
 455                         emit_store_dst(jd, iptr, d);
 456                         break;
 457
 458
 459                 /* load/store/copy/move operations ************************************/
 460
 461                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 462                 case ICMD_ALOAD:      /* s1.localindex = local variable               */
 463                 case ICMD_LLOAD:
 464                 case ICMD_FLOAD:
 465                 case ICMD_DLOAD:
 466                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 467                 case ICMD_LSTORE:
 468                 case ICMD_FSTORE:
 469                 case ICMD_DSTORE:
 470                 case ICMD_COPY:
 471                 case ICMD_MOVE:
 472
 473                         emit_copy(jd, iptr);
 474                         break;
 475
 476                 case ICMD_ASTORE:
 477                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 478                                 emit_copy(jd, iptr);
 479                         break;
 480
 481
 482                 /* integer operations *************************************************/
 483
 484                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 485                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 486                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 487                         M_NEG(s1, d);
 488                         M_EXTSW(d, d);
 489                         emit_store_dst(jd, iptr, d);
 490                         break;
 491
 492                 case ICMD_LNEG:
 493                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 494                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 495                         M_NEG(s1, d);
 496                         emit_store_dst(jd, iptr, d);
 497                         break;
 498
 499
 500                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 501
 502                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 503                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 504                         M_INTMOVE(s1, d);
 505                         emit_store_dst(jd, iptr, d);
 506                         break;
 507
 508                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 509
 510                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 511                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 512                         M_ISEXT(s1, d);
 513                         emit_store_dst(jd, iptr, d);
 514                         break;
 515
 516                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 517
 518                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 519                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 520                         M_BSEXT(s1, d);
 521                         emit_store_dst(jd, iptr, d);
 522                         break;
 523
 524                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 525
 526                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 527                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 528                         M_CZEXT(s1, d);
 529                         emit_store_dst(jd, iptr, d);
 530                         break;
 531
 532                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 533
 534                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 535                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 536                         M_SSEXT(s1, d);
 537                         emit_store_dst(jd, iptr, d);
 538                         break;
 539
 540
 541                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 542
 543                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 544                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 545                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 546                         M_IADD(s1, s2, d);
 547                         M_EXTSW(d,d);
 548                         emit_store_dst(jd, iptr, d);
 549                         break;
 550
 551                 case ICMD_IINC:
 552                 case ICMD_IADDCONST:
 553
 554                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 555                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 556                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 557                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 558                         } else {
 559                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 560                                 M_IADD(s1, REG_ITMP2, d);
 561                         }
 562                         M_EXTSW(d,d);
 563                         emit_store_dst(jd, iptr, d);
 564                         break;
 565
 566                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 567
 568                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 569                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 570                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 571                         M_LADD(s1, s2, d);
 572                         emit_store_dst(jd, iptr, d);
 573                         break;
 574
 575                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 576                                       /* sx.val.l = constant                          */
 577
 578                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 579                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 580                         /* XXX check me */
 581                         if ((iptr->sx.val.l >= -32768) && (iptr->sx.val.l <= 32767)) {
 582                                 M_LADD_IMM(s1, iptr->sx.val.l, d);
 583                         } else {
 584                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 585                                 M_LADD(s1, REG_ITMP2, d);
 586                         }
 587                         emit_store_dst(jd, iptr, d);
 588                         break;
 589
 590                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 591
 592                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 593                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 594                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 595                         M_SUB(s1, s2, d);
 596                         M_EXTSW(d, d);
 597                         emit_store_dst(jd, iptr, d);
 598                         break;
 599
 600                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 601                                       /* sx.val.i = constant                          */
 602
 603                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 604                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 605                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768)) {
 606                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 607                         } else {
 608                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 609                                 M_SUB(s1, REG_ITMP2, d);
 610                         }
 611                         M_EXTSW(d, d);
 612                         emit_store_dst(jd, iptr, d);
 613                         break;
 614
 615                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 616
 617                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 618                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 619                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 620                         M_SUB(s1, s2, d);
 621                         emit_store_dst(jd, iptr, d);
 622                         break;
 623
 624                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 625                                       /* sx.val.l = constant                          */
 626
 627                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 628                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 629                         /* XXX check me */
 630                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767)) {
 631                                 M_LADD_IMM(s1, -iptr->sx.val.l, d);
 632                         } else {
 633                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 634                                 M_SUB(s1, REG_ITMP2, d);
 635                         }
 636                         emit_store_dst(jd, iptr, d);
 637                         break;
 638
 639                 case ICMD_IDIV:
 640                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 641                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 642                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 643                         emit_arithmetic_check(cd, iptr, s2);
 644
 645                         M_DIV(s1, s2, d);
 646                         M_EXTSW(d, d);
 647                         emit_store_dst(jd, iptr, d);
 648                         break;
 649
 650                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 651
 652                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 653                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 654                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 655                         emit_arithmetic_check(cd, iptr, s2);
 656
 657                         M_DIV(s1, s2, d);
 658                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 659                         /* we only need to check this if we did a LDIV, not for IDIV */
 660                         M_MFXER(REG_ITMP2);
 661                         M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 662                         M_BLE(1);
 663                         M_MOV(s1, d);                           /* java specs says result == dividend */
 664                         emit_store_dst(jd, iptr, d);
 665                         break;
 666
 667                 case ICMD_IREM:
 668                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 669                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 670                         emit_arithmetic_check(cd, iptr, s2);
 671
 672                         M_DIV(s1, s2,  REG_ITMP3);
 673                         M_MUL(REG_ITMP3, s2, REG_ITMP2);
 674                         M_SUB(s1, REG_ITMP2,  REG_ITMP3);
 675                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 676
 677                         M_MOV(REG_ITMP3, d);
 678                         emit_store_dst(jd, iptr, d);
 679                         break;
 680
 681
 682                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 683                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 684                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 685                         emit_arithmetic_check(cd, iptr, s2);
 686
 687                         M_DIV(s1, s2,  REG_ITMP3);
 688                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 689                         /* we only need to check this if we did a LDIV, not for IDIV */
 690                         M_MFXER(REG_ITMP2);
 691                         M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 692                         M_BLE(2);
 693                         LCONST(REG_ITMP3, 0);                   /* result == 0 in this case */
 694                         M_BR(2);
 695                         M_MUL(REG_ITMP3, s2, REG_ITMP2);
 696                         M_SUB(s1, REG_ITMP2,  REG_ITMP3);
 697                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 698
 699                         M_MOV(REG_ITMP3, d);
 700                         emit_store_dst(jd, iptr, d);
 701                         break;
 702
 703
 704                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 705                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 706                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 707                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 708                         M_MUL(s1, s2, d);
 709                         M_EXTSW(d, d);
 710                         emit_store_dst(jd, iptr, d);
 711                         break;
 712
 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                         emit_store_dst(jd, iptr, d);
 719                         break;
 720
 721                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 722                                       /* sx.val.i = constant                          */
 723
 724                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 725                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 726                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 727                                 M_MUL_IMM(s1, iptr->sx.val.i, d);
 728                         else {
 729                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 730                                 M_MUL(s1, REG_ITMP3, d);
 731                         }
 732                         M_EXTSW(d, d);
 733                         emit_store_dst(jd, iptr, d);
 734                         break;
 735                 case ICMD_LMULCONST:
 736                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 737                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 738                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767))
 739                                 M_MUL_IMM(s1, iptr->sx.val.l, d);
 740                         else {
 741                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 742                                 M_MUL(s1, REG_ITMP3, d);
 743                         }
 744                         emit_store_dst(jd, iptr, d);
 745                         break;
 746
 747                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 748
 749                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 750                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 751                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 752                         M_ADDZE(d, d);
 753                         M_EXTSW(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_MOV(s1, REG_ITMP1);
 804                         M_CLR_HIGH(REG_ITMP1);
 805                         M_SRL(REG_ITMP1, REG_ITMP2, d);
 806                         M_EXTSW(d,d);   /* for the case it was shift 0 bits */
 807                         emit_store_dst(jd, iptr, d);
 808                         break;
 809
 810                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 811                                       /* sx.val.i = constant                             */
 812
 813                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 814                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 815                         if (iptr->sx.val.i & 0x1f) {
 816                                 M_MOV(s1, REG_ITMP1);
 817                                 M_CLR_HIGH(REG_ITMP1);
 818                                 M_SRA_IMM(REG_ITMP1, iptr->sx.val.i & 0x1f, d);
 819                         } else {
 820                                 M_INTMOVE(s1, d);
 821                         }
 822                         emit_store_dst(jd, iptr, d);
 823                         break;
 824
 825                 case ICMD_LSHLCONST:
 826                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 827                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 828                         M_SLL_IMM(s1, iptr->sx.val.i & 0x3f, d);
 829                         emit_store_dst(jd, iptr, d);
 830                         break;
 831                 case ICMD_LSHL:
 832                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 833                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 834                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 835                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 836                         M_SLL(s1, REG_ITMP2, d);
 837                         emit_store_dst(jd, iptr, d);
 838                         break;
 839                 case ICMD_LSHRCONST:
 840                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 841                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 842                         M_SRA_IMM(s1, iptr->sx.val.i & 0x3f, d);
 843                         emit_store_dst(jd, iptr, d);
 844                         break;
 845                 case ICMD_LSHR:
 846                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 847                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 848                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 849                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 850                         M_SRA(s1, REG_ITMP2, d);
 851                         emit_store_dst(jd, iptr, d);
 852                         break;
 853                 case ICMD_LUSHRCONST:
 854                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 855                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 856                         M_SRL_IMM(s1, iptr->sx.val.i & 0x3f, d);
 857                         emit_store_dst(jd, iptr, d);
 858                         break;
 859                 case ICMD_LUSHR:
 860                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 861                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 862                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 863                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 864                         M_SRL(s1, REG_ITMP2, d);
 865                         emit_store_dst(jd, iptr, d);
 866                         break;
 867
 868                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 869                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 870                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 871                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 872                         M_AND(s1, s2, d);
 873 /*                      M_EXTSW(d, d);*/
 874                         emit_store_dst(jd, iptr, d);
 875                         break;
 876
 877                 case ICMD_LAND:
 878                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 879                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 880                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 881                         M_AND(s1, s2, d);
 882                         emit_store_dst(jd, iptr, d);
 883                         break;
 884
 885                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 886                                       /* sx.val.i = constant                          */
 887
 888                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 889                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 890                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535)) {
 891                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 892                                 }
 893                         /*
 894                         else if (iptr->sx.val.i == 0xffffff) {
 895                                 M_RLWINM(s1, 0, 8, 31, d);
 896                                 }
 897                         */
 898                         else {
 899                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 900                                 M_AND(s1, REG_ITMP3, d);
 901                         }
 902                         emit_store_dst(jd, iptr, d);
 903                         break;
 904
 905                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 906                                       /* sx.val.l = constant                          */
 907
 908                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 909                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 910                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 911                                 M_AND_IMM(s1, iptr->sx.val.l, d);
 912                         /*
 913                         else if (iptr->sx.val.l == 0xffffff) {
 914                                 M_RLWINM(s1, 0, 8, 31, d);
 915                                 }
 916                         */
 917                         else {
 918                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 919                                 M_AND(s1, REG_ITMP3, d);
 920                         }
 921                         emit_store_dst(jd, iptr, d);
 922                         break;
 923
 924                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 925                                       /* sx.val.i = constant                             */
 926                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 927                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 928 #if 0
 929                         /* fast division, result in REG_ITMP3) */
 930                         M_SRA_IMM(s1, iptr->sx.val.i, REG_ITMP3);
 931                         M_ADDZE(REG_ITMP3, REG_ITMP3);
 932
 933                         M_SUB(s1, REG_ITMP3, d);
 934                         M_EXTSW(d, d);
 935                         emit_store_dst(jd, iptr, d);
 936                         break;
 937 #else
 938
 939                         M_MOV(s1, REG_ITMP2);
 940                         M_CMPI(s1, 0);
 941                         M_BGE(1 + 3*(iptr->sx.val.i >= 32768));
 942                         if (iptr->sx.val.i >= 32768) {
 943                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 944                                 M_EXTSW(REG_ITMP2, REG_ITMP2);
 945                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 946                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 947                         } else {
 948                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 949                         }
 950                         {
 951                                 int b=0, m = iptr->sx.val.i;
 952                                 while (m >>= 1)
 953                                         ++b;
 954                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 955                         }
 956                         M_SUB(s1, REG_ITMP2, d);
 957                         M_EXTSW(d, d);
 958                         emit_store_dst(jd, iptr, d);
 959                         break;
 960 #endif
 961
 962                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 963                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 964                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 965                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 966                         M_OR(s1, s2, d);
 967 /*                      M_EXTSW(d,d);*/
 968                         emit_store_dst(jd, iptr, d);
 969                         break;
 970
 971                 case ICMD_LOR:
 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                         M_OR(s1, s2, d);
 977                         emit_store_dst(jd, iptr, d);
 978                         break;
 979
 980                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
 981                                       /* sx.val.i = constant                          */
 982
 983                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 984                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 985                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 986                                 M_OR_IMM(s1, iptr->sx.val.i, d);
 987                         else {
 988                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 989                                 M_OR(s1, REG_ITMP3, d);
 990                         }
 991                         emit_store_dst(jd, iptr, d);
 992                         break;
 993
 994                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
 995                                       /* sx.val.l = constant                          */
 996
 997                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 998                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 999                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
1000                                 M_OR_IMM(s1, iptr->sx.val.l, d);
1001                         else {
1002                                 LCONST(REG_ITMP3, iptr->sx.val.l);
1003                                 M_OR(s1, REG_ITMP3, d);
1004                         }
1005                         emit_store_dst(jd, iptr, d);
1006                         break;
1007
1008
1009                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1010                 case ICMD_LXOR:
1011
1012                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1013                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1014                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1015                         M_XOR(s1, s2, d);
1016                         emit_store_dst(jd, iptr, d);
1017                         break;
1018
1019                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1020                                       /* sx.val.i = constant                          */
1021
1022                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1023                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1024                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1025                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1026                         else {
1027                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1028                                 M_XOR(s1, REG_ITMP3, d);
1029                         }
1030                         emit_store_dst(jd, iptr, d);
1031                         break;
1032
1033                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1034                                       /* sx.val.l = constant                          */
1035
1036                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1037                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1038                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
1039                                 M_XOR_IMM(s1, iptr->sx.val.l, d);
1040                         else {
1041                                 LCONST(REG_ITMP3, iptr->sx.val.l);
1042                                 M_XOR(s1, REG_ITMP3, d);
1043                         }
1044                         emit_store_dst(jd, iptr, d);
1045                         break;
1046
1047                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1048
1049                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1050                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1051                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
1052                         /* XXX implement me!!! */
1053                         vm_abort("codegen: implement ICMD_LCMP!");
1054                         emit_store_dst(jd, iptr, d);
1055                         break;
1056                         break;
1057
1058
1059                 /* floating operations ************************************************/
1060
1061                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1062
1063                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1064                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1065                         M_FMOVN(s1, d);
1066                         emit_store_dst(jd, iptr, d);
1067                         break;
1068
1069                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1070
1071                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1072                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1073                         M_FMOVN(s1, d);
1074                         emit_store_dst(jd, iptr, d);
1075                         break;
1076
1077                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1078
1079                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1080                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1081                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1082                         M_FADD(s1, s2, d);
1083                         emit_store_dst(jd, iptr, d);
1084                         break;
1085
1086                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1087
1088                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1089                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1090                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1091                         M_DADD(s1, s2, d);
1092                         emit_store_dst(jd, iptr, d);
1093                         break;
1094
1095                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1096
1097                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1098                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1099                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1100                         M_FSUB(s1, s2, d);
1101                         emit_store_dst(jd, iptr, d);
1102                         break;
1103
1104                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1105
1106                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1107                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1108                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1109                         M_DSUB(s1, s2, d);
1110                         emit_store_dst(jd, iptr, d);
1111                         break;
1112
1113                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1114
1115                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1116                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1117                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1118                         M_FMUL(s1, s2, d);
1119                         emit_store_dst(jd, iptr, d);
1120                         break;
1121
1122                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1123
1124                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1125                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1126                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1127                         M_DMUL(s1, s2, d);
1128                         emit_store_dst(jd, iptr, d);
1129                         break;
1130
1131                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1132
1133                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1134                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1135                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1136                         M_FDIV(s1, s2, d);
1137                         emit_store_dst(jd, iptr, d);
1138                         break;
1139
1140                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1141
1142                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1143                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1144                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1145                         M_DDIV(s1, s2, d);
1146                         emit_store_dst(jd, iptr, d);
1147                         break;
1148
1149                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1150                 case ICMD_D2I:
1151
1152                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1153                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1154                         M_CLR(d);
1155                         disp = dseg_add_float(cd, 0.0);
1156                         M_FLD(REG_FTMP2, REG_PV, disp);
1157                         M_FCMPU(s1, REG_FTMP2);
1158                         M_BNAN(4);
1159                         disp = dseg_add_unique_s4(cd, 0);
1160                         M_CVTDL_C(s1, REG_FTMP1);
1161                         M_LDA(REG_ITMP1, REG_PV, disp);
1162                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1163                         M_ILD(d, REG_PV, disp);
1164                         emit_store_dst(jd, iptr, d);
1165                         break;
1166
1167                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1168
1169                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1170                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1171                         M_FLTMOVE(s1, d);
1172                         emit_store_dst(jd, iptr, d);
1173                         break;
1174
1175                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1176
1177                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1178                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1179                         M_CVTDF(s1, d);
1180                         emit_store_dst(jd, iptr, d);
1181                         break;
1182
1183                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1184                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1185
1186                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1187                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1188                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1189                         M_FCMPU(s2, s1);
1190                         M_IADD_IMM(REG_ZERO, -1, d);
1191                         M_BNAN(4);
1192                         M_BGT(3);
1193                         M_IADD_IMM(REG_ZERO, 0, d);
1194                         M_BGE(1);
1195                         M_IADD_IMM(REG_ZERO, 1, d);
1196                         emit_store_dst(jd, iptr, d);
1197                         break;
1198
1199                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1200                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1201
1202                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1203                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1204                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1205                         M_FCMPU(s1, s2);
1206                         M_IADD_IMM(REG_ZERO, 1, d);
1207                         M_BNAN(4);
1208                         M_BGT(3);
1209                         M_IADD_IMM(REG_ZERO, 0, d);
1210                         M_BGE(1);
1211                         M_IADD_IMM(REG_ZERO, -1, d);
1212                         emit_store_dst(jd, iptr, d);
1213                         break;
1214
1215
1216                 /* memory operations **************************************************/
1217
1218                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1219
1220                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1221                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1222                         emit_nullpointer_check(cd, iptr, s1);
1223                         M_ILD(d, s1, OFFSET(java_array_t, size));
1224                         emit_store_dst(jd, iptr, d);
1225                         break;
1226
1227                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1228
1229                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1230                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1231                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1232                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1233                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1234                         /* implicit null-pointer check */
1235                         M_LBZX(d, s1, REG_ITMP2);
1236                         M_BSEXT(d, d);
1237                         emit_store_dst(jd, iptr, d);
1238                         break;
1239
1240                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1241
1242                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1243                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1244                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1245                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1246                         M_SLL_IMM(s2, 1, REG_ITMP2);
1247                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1248                         /* implicit null-pointer check */
1249                         M_LHZX(d, s1, REG_ITMP2);
1250                         emit_store_dst(jd, iptr, d);
1251                         break;
1252
1253                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1254
1255                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1256                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1257                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1258                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1259                         M_SLL_IMM(s2, 1, REG_ITMP2);
1260                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1261                         /* implicit null-pointer check */
1262                         M_LHAX(d, s1, REG_ITMP2);
1263                         emit_store_dst(jd, iptr, d);
1264                         break;
1265
1266                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1267
1268                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1269                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1270                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1271                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1272                         M_SLL_IMM(s2, 2, REG_ITMP2);
1273                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1274                         /* implicit null-pointer check */
1275                         M_LWAX(d, s1, REG_ITMP2);
1276                         emit_store_dst(jd, iptr, d);
1277                         break;
1278
1279                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1280
1281                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1282                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1283                         d = codegen_reg_of_dst(jd, iptr, PACK_REGS(REG_ITMP2, REG_ITMP1));
1284                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1285                         M_SLL_IMM(s2, 3, REG_ITMP2);
1286                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1287                         /* implicit null-pointer check */
1288                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray_t, data[0]));
1289                         emit_store_dst(jd, iptr, d);
1290                         break;
1291
1292                 case ICMD_FALOAD:     /* ..., arrayref, index  ==> ..., value         */
1293
1294                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1295                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1296                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1297                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1298                         M_SLL_IMM(s2, 2, REG_ITMP2);
1299                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1300                         /* implicit null-pointer check */
1301                         M_LFSX(d, s1, REG_ITMP2);
1302                         emit_store_dst(jd, iptr, d);
1303                         break;
1304
1305                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1306
1307                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1308                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1309                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1310                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1311                         M_SLL_IMM(s2, 3, REG_ITMP2);
1312                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1313                         /* implicit null-pointer check */
1314                         M_LFDX(d, s1, REG_ITMP2);
1315                         emit_store_dst(jd, iptr, d);
1316                         break;
1317
1318                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1319
1320                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1321                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1322                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1323                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1324                         M_SLL_IMM(s2, 3, REG_ITMP2);
1325                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1326                         /* implicit null-pointer check */
1327                         M_ALDX(d, s1, REG_ITMP2);
1328                         emit_store_dst(jd, iptr, d);
1329                         break;
1330
1331
1332                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1333
1334                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1335                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1336                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1337                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1338                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1339                         /* implicit null-pointer check */
1340                         M_STBX(s3, s1, REG_ITMP2);
1341                         break;
1342
1343                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1344
1345                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1346                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1347                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1348                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1349                         M_SLL_IMM(s2, 1, REG_ITMP2);
1350                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1351                         /* implicit null-pointer check */
1352                         M_STHX(s3, s1, REG_ITMP2);
1353                         break;
1354
1355                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1356
1357                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1358                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1359                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1360                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1361                         M_SLL_IMM(s2, 1, REG_ITMP2);
1362                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1363                         M_STHX(s3, s1, REG_ITMP2);
1364                         break;
1365
1366                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1367
1368                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1369                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1370                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1371                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1372                         M_SLL_IMM(s2, 2, REG_ITMP2);
1373                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1374                         /* implicit null-pointer check */
1375                         M_STWX(s3, s1, REG_ITMP2);
1376                         break;
1377
1378                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1379
1380                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1381                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1382                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1383                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1384                         M_SLL_IMM(s2, 3, REG_ITMP2);
1385                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray_t, data[0]), REG_ITMP2);
1386                         /* implicit null-pointer check */
1387                         M_LSTX(s3, s1, REG_ITMP2);
1388                         break;
1389
1390                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1391
1392                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1393                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1394                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1395                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1396                         M_SLL_IMM(s2, 2, REG_ITMP2);
1397                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1398                         /* implicit null-pointer check */
1399                         M_STFSX(s3, s1, REG_ITMP2);
1400                         break;
1401
1402                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1403
1404                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1405                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1406                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1407                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1408                         M_SLL_IMM(s2, 3, REG_ITMP2);
1409                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1410                         /* implicit null-pointer check */
1411                         M_STFDX(s3, s1, REG_ITMP2);
1412                         break;
1413
1414                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1415
1416                         s1 = emit_load_s1(jd, iptr, REG_A0);
1417                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1418                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1419                         s3 = emit_load_s3(jd, iptr, REG_A1);
1420
1421                         disp = dseg_add_functionptr(cd, BUILTIN_FAST_canstore);
1422                         M_ALD(REG_ITMP3, REG_PV, disp);
1423                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1424                         M_MTCTR(REG_ITMP3);
1425
1426                         M_INTMOVE(s1, REG_A0);
1427                         M_INTMOVE(s3, REG_A1);
1428
1429                         M_JSR;
1430                         emit_arraystore_check(cd, iptr);
1431
1432                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1433                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1434                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1435                         M_SLL_IMM(s2, 3, REG_ITMP2);
1436                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1437                         /* implicit null-pointer check */
1438                         M_ASTX(s3, s1, REG_ITMP2);
1439                         break;
1440
1441
1442                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1443
1444                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1445                                 uf        = iptr->sx.s23.s3.uf;
1446                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1447                                 disp      = dseg_add_unique_address(cd, NULL);
1448
1449                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic,
1450                                                                         iptr->sx.s23.s3.uf, disp);
1451
1452                         }
1453                         else {
1454                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1455                                 fieldtype = fi->type;
1456                                 disp      = dseg_add_address(cd, fi->value);
1457
1458                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class)) {
1459                                         patcher_add_patch_ref(jd, PATCHER_initialize_class, fi->class, disp);
1460                                 }
1461                         }
1462
1463                         M_ALD(REG_ITMP1, REG_PV, disp);
1464                         switch (fieldtype) {
1465                         case TYPE_INT:
1466                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1467                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1468                                 break;
1469                         case TYPE_LNG:
1470                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1471                                 M_LLD(d, REG_ITMP1, 0);
1472                                 break;
1473                         case TYPE_ADR:
1474                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1475                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1476                                 break;
1477                         case TYPE_FLT:
1478                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1479                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1480                                 break;
1481                         case TYPE_DBL:
1482                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1483                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1484                                 break;
1485                         }
1486                         emit_store_dst(jd, iptr, d);
1487                         break;
1488
1489                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1490
1491
1492                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1493                                 uf        = iptr->sx.s23.s3.uf;
1494                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1495                                 disp      = dseg_add_unique_address(cd, NULL);
1496
1497                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic,
1498                                                                         iptr->sx.s23.s3.uf, disp);
1499                         }
1500                         else {
1501                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1502                                 fieldtype = fi->type;
1503                                 disp      = dseg_add_address(cd, fi->value);
1504
1505                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->class)) {
1506                                         patcher_add_patch_ref(jd, PATCHER_initialize_class, fi->class, disp);
1507                                 }
1508                         }
1509
1510                         M_ALD(REG_ITMP1, REG_PV, disp);
1511                         switch (fieldtype) {
1512                         case TYPE_INT:
1513                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1514                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1515                                 break;
1516                         case TYPE_LNG:
1517                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1518                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1519                                 break;
1520                         case TYPE_ADR:
1521                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1522                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1523                                 break;
1524                         case TYPE_FLT:
1525                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1526                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1527                                 break;
1528                         case TYPE_DBL:
1529                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1530                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1531                                 break;
1532                         }
1533                         break;
1534
1535
1536                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1537
1538                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1539
1540                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1541                                 uf        = iptr->sx.s23.s3.uf;
1542                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1543                                 disp      = 0;
1544
1545                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1546                         }
1547                         else {
1548                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1549                                 fieldtype = fi->type;
1550                                 disp      = fi->offset;
1551                         }
1552
1553                         /* implicit null-pointer check */
1554                         switch (fieldtype) {
1555                         case TYPE_INT:
1556                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1557                                 M_ILD(d, s1, disp);
1558                                 break;
1559                         case TYPE_LNG:
1560                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1561                                 M_LLD(d, s1, disp);
1562                                 break;
1563                         case TYPE_ADR:
1564                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1565                                 M_ALD(d, s1, disp);
1566                                 break;
1567                         case TYPE_FLT:
1568                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1569                                 M_FLD(d, s1, disp);
1570                                 break;
1571                         case TYPE_DBL:
1572                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1573                                 M_DLD(d, s1, disp);
1574                                 break;
1575                         }
1576                         emit_store_dst(jd, iptr, d);
1577                         break;
1578
1579                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1580
1581                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1582
1583                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1584                                 uf        = iptr->sx.s23.s3.uf;
1585                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1586                                 disp      = 0;
1587                         }
1588                         else {
1589                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1590                                 fieldtype = fi->type;
1591                                 disp      = fi->offset;
1592                         }
1593
1594                         if (IS_INT_LNG_TYPE(fieldtype)) {
1595                                 s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1596                         }
1597                         else
1598                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1599
1600                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1601                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1602                         }
1603
1604
1605                         /* implicit null-pointer check */
1606                         switch (fieldtype) {
1607                         case TYPE_INT:
1608                                 M_IST(s2, s1, disp);
1609                                 break;
1610                         case TYPE_LNG:
1611                                 M_LST(s2, s1, disp);
1612                                 break;
1613                         case TYPE_ADR:
1614                                 M_AST(s2, s1, disp);
1615                                 break;
1616                         case TYPE_FLT:
1617                                 M_FST(s2, s1, disp);
1618                                 break;
1619                         case TYPE_DBL:
1620                                 M_DST(s2, s1, disp);
1621                                 break;
1622                         }
1623                         break;
1624
1625
1626                 /* branch operations **************************************************/
1627
1628                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1629
1630                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1631                         M_LNGMOVE(s1, REG_ITMP1_XPTR);
1632
1633 #ifdef ENABLE_VERIFIER
1634                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1635                                 patcher_add_patch_ref(jd, PATCHER_resolve_class,
1636                                                                         iptr->sx.s23.s2.uc, 0);
1637                         }
1638 #endif /* ENABLE_VERIFIER */
1639
1640                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1641                         M_ALD(REG_ITMP2, REG_PV, disp);
1642                         M_MTCTR(REG_ITMP2);
1643
1644                         if (code_is_leafmethod(code))
1645                                 M_MFLR(REG_ITMP3);                          /* save LR        */
1646
1647                         M_BL(0);                                        /* get current PC */
1648                         M_MFLR(REG_ITMP2_XPC);
1649
1650                         if (code_is_leafmethod(code))
1651                                 M_MTLR(REG_ITMP3);                          /* restore LR     */
1652
1653                         M_RTS;                                          /* jump to CTR    */
1654                         ALIGNCODENOP;
1655                         break;
1656
1657                 case ICMD_GOTO:         /* ... ==> ...                                */
1658                 case ICMD_RET:          /* ... ==> ...                                */
1659
1660                         emit_br(cd, iptr->dst.block);
1661                         ALIGNCODENOP;
1662                         break;
1663
1664                 case ICMD_JSR:          /* ... ==> ...                                */
1665
1666                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1667                         ALIGNCODENOP;
1668                         break;
1669
1670                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1671
1672                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1673                         M_TST(s1);
1674                         emit_beq(cd, iptr->dst.block);
1675                         break;
1676
1677                 case ICMD_IFNONNULL:    /* ..., value ==> ...                         */
1678
1679                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1680                         M_TST(s1);
1681                         emit_bne(cd, iptr->dst.block);
1682                         break;
1683
1684                 case ICMD_IFLT:
1685                 case ICMD_IFLE:
1686                 case ICMD_IFNE:
1687                 case ICMD_IFGT:
1688                 case ICMD_IFGE:
1689                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1690
1691                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1692                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1693                                 M_CMPI(s1, iptr->sx.val.i);
1694                         else {
1695                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1696                                 M_CMP(s1, REG_ITMP2);
1697                         }
1698                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1699                         break;
1700
1701                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1702                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1703                         LCONST(REG_ITMP2, iptr->sx.val.l);
1704                         M_CMP(s1, REG_ITMP2);
1705                         emit_beq(cd, iptr->dst.block);
1706                         break;
1707                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1708                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1709                         LCONST(REG_ITMP2, iptr->sx.val.l);
1710                         M_CMP(s1, REG_ITMP2);
1711                         emit_blt(cd, iptr->dst.block);
1712                         break;
1713                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1714                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1715                         LCONST(REG_ITMP2, iptr->sx.val.l);
1716                         M_CMP(s1, REG_ITMP2);
1717                         emit_ble(cd, iptr->dst.block);
1718                         break;
1719
1720                 case ICMD_IF_LNE:       /* ..., value ==> ... */
1721                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1722                         LCONST(REG_ITMP2, iptr->sx.val.l);
1723                         M_CMP(s1, REG_ITMP2);
1724                         emit_bne(cd, iptr->dst.block);
1725                         break;
1726                 case ICMD_IF_LGE:       /* ..., value ==> ... */
1727                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1728                         LCONST(REG_ITMP2, iptr->sx.val.l);
1729                         M_CMP(s1, REG_ITMP2);
1730                         emit_bge(cd, iptr->dst.block);
1731                         break;
1732                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1733                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1734                         LCONST(REG_ITMP2, iptr->sx.val.l);
1735                         M_CMP(s1, REG_ITMP2);
1736                         emit_bgt(cd, iptr->dst.block);
1737                         break;
1738                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
1739                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
1740                 case ICMD_IF_LCMPEQ:
1741
1742                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1743                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1744                         M_CMP(s1, s2);
1745                         emit_beq(cd, iptr->dst.block);
1746                         break;
1747
1748                 case ICMD_IF_ICMPNE:    /* ..., value, value ==> ...                  */
1749                 case ICMD_IF_ACMPNE:    /* op1 = target JavaVM pc                     */
1750                 case ICMD_IF_LCMPNE:
1751
1752                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1753                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1754                         M_CMP(s1, s2);
1755                         emit_bne(cd, iptr->dst.block);
1756                         break;
1757
1758
1759                 case ICMD_IF_ICMPLT:    /* ..., value, value ==> ...                  */
1760                 case ICMD_IF_LCMPLT:
1761
1762                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1763                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1764                         M_CMP(s1, s2);
1765                         emit_blt(cd, iptr->dst.block);
1766                         break;
1767
1768                 case ICMD_IF_ICMPGT:    /* ..., value, value ==> ...                  */
1769                 case ICMD_IF_LCMPGT:
1770
1771                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1772                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1773                         M_CMP(s1, s2);
1774                         emit_bgt(cd, iptr->dst.block);
1775                         break;
1776
1777                 case ICMD_IF_ICMPLE:    /* ..., value, value ==> ...                  */
1778                 case ICMD_IF_LCMPLE:
1779
1780                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1781                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1782                         M_CMP(s1, s2);
1783                         emit_ble(cd, iptr->dst.block);
1784                         break;
1785
1786                 case ICMD_IF_ICMPGE:    /* ..., value, value ==> ...                  */
1787                 case ICMD_IF_LCMPGE:
1788
1789                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1790                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1791                         M_CMP(s1, s2);
1792                         emit_bge(cd, iptr->dst.block);
1793                         break;
1794
1795
1796                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
1797                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
1798
1799                         REPLACEMENT_POINT_RETURN(cd, iptr);
1800                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1801                         M_LNGMOVE(s1, REG_RESULT);
1802                         goto nowperformreturn;
1803
1804                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
1805
1806                         REPLACEMENT_POINT_RETURN(cd, iptr);
1807                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1808                         M_LNGMOVE(s1, REG_RESULT);
1809
1810 #ifdef ENABLE_VERIFIER
1811                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1812                                 patcher_add_patch_ref(jd, PATCHER_resolve_class,
1813                                                                         iptr->sx.s23.s2.uc, 0);
1814                         }
1815 #endif /* ENABLE_VERIFIER */
1816
1817                         goto nowperformreturn;
1818
1819                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
1820                 case ICMD_DRETURN:
1821
1822                         REPLACEMENT_POINT_RETURN(cd, iptr);
1823                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
1824                         M_FLTMOVE(s1, REG_FRESULT);
1825                         goto nowperformreturn;
1826
1827                 case ICMD_RETURN:      /* ...  ==> ...                                */
1828
1829                         REPLACEMENT_POINT_RETURN(cd, iptr);
1830
1831 nowperformreturn:
1832                         {
1833                         s4 i, p;
1834
1835                         p = cd->stackframesize;
1836
1837                         /* call trace function */
1838
1839 #if !defined(NDEBUG)
1840                         if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
1841                                 emit_verbosecall_exit(jd);
1842 #endif
1843
1844 #if defined(ENABLE_THREADS)
1845                         if (checksync && code_is_synchronized(code)) {
1846                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
1847                                 M_ALD(REG_ITMP3, REG_PV, disp);
1848                                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1849                                 M_MTCTR(REG_ITMP3);
1850
1851                                 /* we need to save the proper return value */
1852
1853                                 switch (iptr->opc) {
1854                                 case ICMD_LRETURN:
1855                                 case ICMD_IRETURN:
1856                                 case ICMD_ARETURN:
1857                                         /* fall through */
1858                                         M_LST(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1859                                         break;
1860                                 case ICMD_FRETURN:
1861                                         M_FST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1862                                         break;
1863                                 case ICMD_DRETURN:
1864                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1865                                         break;
1866                                 }
1867
1868                                 M_ALD(REG_A0, REG_SP, rd->memuse * 8);
1869                                 M_JSR;
1870
1871                                 /* and now restore the proper return value */
1872
1873                                 switch (iptr->opc) {
1874                                 case ICMD_LRETURN:
1875                                 case ICMD_IRETURN:
1876                                 case ICMD_ARETURN:
1877                                         /* fall through */
1878                                         M_LLD(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1879                                         break;
1880                                 case ICMD_FRETURN:
1881                                         M_FLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1882                                         break;
1883                                 case ICMD_DRETURN:
1884                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1885                                         break;
1886                                 }
1887                         }
1888 #endif
1889
1890                         /* restore return address                                         */
1891
1892                         if (!code_is_leafmethod(code)) {
1893                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
1894                                    may have a displacement overflow. */
1895
1896                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
1897                                 M_MTLR(REG_ITMP1);
1898                         }
1899
1900                         /* restore saved registers                                        */
1901
1902                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
1903                                 p--; M_LLD(rd->savintregs[i], REG_SP, p * 8);
1904                         }
1905                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
1906                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
1907                         }
1908
1909                         /* deallocate stack                                               */
1910
1911                         if (cd->stackframesize)
1912                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
1913
1914                         M_RET;
1915                         ALIGNCODENOP;
1916                         }
1917                         break;
1918
1919
1920                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
1921                         {
1922                         s4 i, l;
1923                         branch_target_t *table;
1924
1925                         table = iptr->dst.table;
1926
1927                         l = iptr->sx.s23.s2.tablelow;
1928                         i = iptr->sx.s23.s3.tablehigh;
1929
1930                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1931                         if (l == 0) {
1932                                 M_INTMOVE(s1, REG_ITMP1);
1933                         } else if (l <= 32768) {
1934                                 M_LDA(REG_ITMP1, s1, -l);
1935                         } else {
1936                                 ICONST(REG_ITMP2, l);
1937                                 M_SUB(s1, REG_ITMP2, REG_ITMP1);
1938                         }
1939
1940                         /* number of targets */
1941                         i = i - l + 1;
1942
1943                         /* range check */
1944
1945                         M_CMPUI(REG_ITMP1, i - 1);
1946                         emit_bgt(cd, table[0].block);
1947
1948                         /* build jump table top down and use address of lowest entry */
1949
1950                         table += i;
1951
1952                         while (--i >= 0) {
1953                                 dseg_add_target(cd, table->block);
1954                                 --table;
1955                         }
1956
1957                         /* length of dataseg after last dseg_add_unique_target is used by load */
1958
1959                         M_SLL_IMM(REG_ITMP1, 3, REG_ITMP1);
1960                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
1961                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
1962                         M_MTCTR(REG_ITMP2);
1963                         M_RTS;
1964                         ALIGNCODENOP;
1965                         }
1966                         break;
1967
1968
1969                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
1970                         {
1971                         s4 i, val;
1972                         lookup_target_t *lookup;
1973
1974                         lookup = iptr->dst.lookup;
1975
1976                         i = iptr->sx.s23.s2.lookupcount;
1977
1978                         MCODECHECK((i<<3)+8);
1979                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1980                         while (--i >= 0) {
1981                                 val = lookup->value;
1982                                 if ((val >= -32768) && (val <= 32767)) {
1983                                         M_CMPI(s1, val);
1984
1985                                 } else {
1986                                         a = dseg_add_s4(cd, val);
1987                                         M_ILD(REG_ITMP2, REG_PV, a);
1988                                         M_CMP(s1, REG_ITMP2);
1989                                 }
1990                                 emit_beq(cd, lookup->target.block);
1991                                 ++lookup;
1992                         }
1993
1994                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
1995
1996                         ALIGNCODENOP;
1997                         break;
1998                         }
1999
2000
2001                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2002
2003                         bte = iptr->sx.s23.s3.bte;
2004                         md = bte->md;
2005                         goto gen_method;
2006
2007                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2008                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2009                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2010                 case ICMD_INVOKEINTERFACE:
2011
2012                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2013
2014                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2015                                 lm = NULL;
2016                                 um = iptr->sx.s23.s3.um;
2017                                 md = um->methodref->parseddesc.md;
2018                         }
2019                         else {
2020                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2021                                 um = NULL;
2022                                 md = lm->parseddesc;
2023                         }
2024
2025 gen_method:
2026                         s3 = md->paramcount;
2027
2028                         MCODECHECK((s3 << 2) + 128);
2029
2030                         /* copy arguments to registers or stack location */
2031
2032                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2033                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2034                                 d   = md->params[s3].regoff;
2035
2036                                 if (var->flags & PREALLOC)
2037                                         continue;
2038
2039                                 if (IS_INT_LNG_TYPE(var->type)) {
2040                                         if (!md->params[s3].inmemory) {
2041                                                 s1 = emit_load(jd, iptr, var, d);
2042                                                 M_LNGMOVE(s1, d);
2043                                         }
2044                                         else {
2045                                                 s1 = emit_load(jd, iptr, var, REG_ITMP1);
2046                                                 M_LST(s1, REG_SP, d);
2047                                         }
2048                                 }
2049                                 else {
2050                                         if (!md->params[s3].inmemory) {
2051                                                 s1 = emit_load(jd, iptr, var, d);
2052                                                 M_FLTMOVE(s1, d);
2053                                         }
2054                                         else {
2055                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2056                                                 M_DST(s1, REG_SP, d);
2057                                         }
2058                                 }
2059                         }
2060
2061                         switch (iptr->opc) {
2062                         case ICMD_BUILTIN:
2063                                 if (bte->stub == NULL) {
2064                                         disp = dseg_add_functionptr(cd, bte->fp);
2065                                         M_ALD(REG_PV, REG_PV, disp);
2066                                         M_ALD(REG_PV, REG_PV, 0);       /* TOC */
2067                                 }
2068                                 else {
2069                                         disp = dseg_add_functionptr(cd, bte->stub);
2070                                         M_ALD(REG_PV, REG_PV, disp);
2071                                 }
2072
2073                                 /* generate the actual call */
2074                                 M_MTCTR(REG_PV);
2075                                 M_JSR;
2076                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2077                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2078                                 M_MFLR(REG_ITMP1);
2079                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2080                                 break;
2081
2082                         case ICMD_INVOKESPECIAL:
2083                                 emit_nullpointer_check(cd, iptr, REG_A0);
2084                                 /* fall through */
2085
2086                         case ICMD_INVOKESTATIC:
2087                                 if (lm == NULL) {
2088                                         disp = dseg_add_unique_address(cd, um);
2089
2090                                         patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
2091                                                                                 um, disp);
2092                                 } else {
2093                                         disp = dseg_add_address(cd, lm->stubroutine);
2094                                 }
2095                                 M_ALD(REG_PV, REG_PV, disp);
2096
2097                                 /* generate the actual call */
2098
2099                                 M_MTCTR(REG_PV);
2100                                 M_JSR;
2101                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2102                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2103                                 M_MFLR(REG_ITMP1);
2104                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2105                                 break;
2106
2107                         case ICMD_INVOKEVIRTUAL:
2108                                 if (lm == NULL) {
2109                                         patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
2110                                         s1 = 0;
2111                                 } else {
2112                                         s1 = OFFSET(vftbl_t, table[0]) +
2113                                                 sizeof(methodptr) * lm->vftblindex;
2114                                 }
2115
2116                                 /* implicit null-pointer check */
2117                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2118                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2119
2120                                 /* generate the actual call */
2121
2122                                 M_MTCTR(REG_PV);
2123                                 M_JSR;
2124                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2125                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2126                                 M_MFLR(REG_ITMP1);
2127                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2128                                 break;
2129
2130                         case ICMD_INVOKEINTERFACE:
2131                                 if (lm == NULL) {
2132                                         patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
2133
2134                                         s1 = 0;
2135                                         s2 = 0;
2136
2137                                 } else {
2138                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2139                                                 sizeof(methodptr*) * lm->class->index;
2140
2141                                         s2 = sizeof(methodptr) * (lm - lm->class->methods);
2142                                 }
2143
2144                                 /* implicit null-pointer check */
2145                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2146                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2147                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2148
2149                                 /* generate the actual call */
2150
2151                                 M_MTCTR(REG_PV);
2152                                 M_JSR;
2153                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2154                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2155                                 M_MFLR(REG_ITMP1);
2156                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2157
2158                                 break;
2159                         }
2160                         /* store return value */
2161
2162                         d = md->returntype.type;
2163
2164                         if (d != TYPE_VOID) {
2165                                 if (IS_INT_LNG_TYPE(d)) {
2166                                         s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2167                                         M_MOV(REG_RESULT, s1);
2168                                 }
2169                                 else {
2170                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2171                                         M_FLTMOVE(REG_FRESULT, s1);
2172                                 }
2173                                 emit_store_dst(jd, iptr, s1);
2174                         }
2175                         break;
2176
2177                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2178                                       /* val.a: (classinfo*) superclass               */
2179
2180                         /*  superclass is an interface:
2181                          *
2182                          *  OK if ((sub == NULL) ||
2183                          *         (sub->vftbl->interfacetablelength > super->index) &&
2184                          *         (sub->vftbl->interfacetable[-super->index] != NULL));
2185                          *
2186                          *  superclass is a class:
2187                          *
2188                          *  OK if ((sub == NULL) || (0
2189                          *         <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2190                          *         super->vftbl->diffvall));
2191                          */
2192
2193                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2194                                 /* object type cast-check */
2195
2196                                 classinfo *super;
2197                                 s4         superindex;
2198
2199                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2200                                         super      = NULL;
2201                                         superindex = 0;
2202                                 }
2203                                 else {
2204                                         super      = iptr->sx.s23.s3.c.cls;
2205                                         superindex = super->index;
2206                                 }
2207
2208                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2209                                         CODEGEN_CRITICAL_SECTION_NEW;
2210                                 }
2211
2212                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2213
2214                                 /* if class is not resolved, check which code to call */
2215
2216                                 if (super == NULL) {
2217                                         M_TST(s1);
2218                                         emit_label_beq(cd, BRANCH_LABEL_1);
2219                                         disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2220
2221                                         patcher_add_patch_ref(jd,
2222                                                                                 PATCHER_resolve_classref_to_flags,
2223                                                                                 iptr->sx.s23.s3.c.ref,
2224                                                                                 disp);
2225
2226                                         M_ILD(REG_ITMP2, REG_PV, disp);
2227                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2228
2229                                         emit_label_beq(cd, BRANCH_LABEL_2);
2230                                 }
2231
2232                                 /* interface checkcast code */
2233
2234                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2235                                         if (super == NULL) {
2236                                                 patcher_add_patch_ref(jd,
2237                                                                                         PATCHER_checkcast_interface,
2238                                                                                         iptr->sx.s23.s3.c.ref,
2239                                                                                         0);
2240                                         } else {
2241                                                 M_TST(s1);
2242                                                 emit_label_beq(cd, BRANCH_LABEL_3);
2243                                         }
2244
2245                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2246                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2247                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2248                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2249                                         M_ALD(REG_ITMP3, REG_ITMP2,
2250                                                   OFFSET(vftbl_t, interfacetable[0]) -
2251                                                   superindex * sizeof(methodptr*));
2252                                         M_TST(REG_ITMP3);
2253                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2254
2255                                         if (super == NULL)      {
2256                                                 emit_label_br(cd, BRANCH_LABEL_4);
2257                                         } else  {
2258                                                 emit_label(cd, BRANCH_LABEL_3);
2259                                         }
2260                                 }
2261
2262                                 /* class checkcast code */
2263
2264                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2265                                         if (super == NULL) {
2266                                                 emit_label(cd, BRANCH_LABEL_2);
2267
2268                                                 disp = dseg_add_unique_address(cd, NULL);
2269                                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2270                                                                                         iptr->sx.s23.s3.c.ref,
2271                                                                                         disp);
2272                                         } else {
2273                                                 disp = dseg_add_address(cd, super->vftbl);
2274                                                 M_TST(s1);
2275                                                 emit_label_beq(cd, BRANCH_LABEL_5);
2276                                         }
2277
2278                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2279
2280                                         CODEGEN_CRITICAL_SECTION_START;
2281
2282                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2283                                         M_ALD(REG_ITMP2, REG_PV, disp);
2284                                         if (s1 != REG_ITMP1) {
2285                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2286                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2287
2288                                                 CODEGEN_CRITICAL_SECTION_END;
2289
2290                                                 M_SUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2291                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2292                                         } else {
2293                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2294                                                 M_SUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2295                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2296                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2297                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2298
2299                                                 CODEGEN_CRITICAL_SECTION_END;
2300
2301                                         }
2302                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2303                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2304
2305                                         if (super != NULL)
2306                                                 emit_label(cd, BRANCH_LABEL_5);
2307                                 }
2308
2309                                 if (super == NULL) {
2310                                         emit_label(cd, BRANCH_LABEL_1);
2311                                         emit_label(cd, BRANCH_LABEL_4);
2312                                 }
2313                                 d = codegen_reg_of_dst(jd, iptr, s1);
2314
2315                         } else {
2316                                 /* array type cast-check */
2317
2318                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2319                                 M_INTMOVE(s1, REG_A0);
2320
2321
2322                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2323                                         disp = dseg_add_unique_address(cd, NULL);
2324                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2325                                                                                 iptr->sx.s23.s3.c.ref,
2326                                                                                 disp);
2327                                 } else {
2328                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2329                                 }
2330
2331                                 M_ALD(REG_A1, REG_PV, disp);
2332                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2333                                 M_ALD(REG_ITMP2, REG_PV, disp);
2334                                 M_ALD(REG_ITMP2, REG_ITMP2, 0); /* TOC */
2335                                 M_MTCTR(REG_ITMP2);
2336                                 M_JSR;
2337                                 M_TST(REG_RESULT);
2338                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2339
2340                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2341                                 d = codegen_reg_of_dst(jd, iptr, s1);
2342                         }
2343                         M_INTMOVE(s1, d);
2344                         emit_store_dst(jd, iptr, d);
2345                         break;
2346
2347
2348                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2349                                       /* val.a: (classinfo*) superclass               */
2350
2351                         /*  superclass is an interface:
2352                          *
2353                          *  return (sub != NULL) &&
2354                          *         (sub->vftbl->interfacetablelength > super->index) &&
2355                          *         (sub->vftbl->interfacetable[-super->index] != NULL);
2356                          *
2357                          *  superclass is a class:
2358                          *
2359                          *  return ((sub != NULL) && (0
2360                          *          <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2361                          *          super->vftbl->diffvall));
2362                          */
2363
2364                         {
2365                         classinfo *super;
2366                         s4         superindex;
2367
2368                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2369                                 super      = NULL;
2370                                 superindex = 0;
2371                         }
2372                         else {
2373                                 super      = iptr->sx.s23.s3.c.cls;
2374                                 superindex = super->index;
2375                         }
2376
2377                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2378                                 CODEGEN_CRITICAL_SECTION_NEW;
2379                         }
2380
2381                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2382                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2383                         if (s1 == d) {
2384                                 M_MOV(s1, REG_ITMP1);
2385                                 s1 = REG_ITMP1;
2386                         }
2387
2388                         M_CLR(d);
2389
2390                         /* if class is not resolved, check which code to call */
2391
2392                         if (super == NULL) {
2393                                 M_TST(s1);
2394                                 emit_label_beq(cd, BRANCH_LABEL_1);
2395                                 disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2396
2397                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
2398                                                                         iptr->sx.s23.s3.c.ref, disp);
2399
2400                                 M_ILD(REG_ITMP3, REG_PV, disp);
2401                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2402                                 emit_label_beq(cd, BRANCH_LABEL_2);
2403                         }
2404
2405                         /* interface instanceof code */
2406
2407                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2408                                 if (super == NULL) {
2409                                         patcher_add_patch_ref(jd,
2410                                                                                 PATCHER_instanceof_interface,
2411                                                                                 iptr->sx.s23.s3.c.ref, 0);
2412
2413                                 } else {
2414                                         M_TST(s1);
2415                                         emit_label_beq(cd, BRANCH_LABEL_3);
2416                                 }
2417
2418                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2419                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2420                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2421                                 M_BLE(4);
2422                                 M_ALD(REG_ITMP1, REG_ITMP1,
2423                                           OFFSET(vftbl_t, interfacetable[0]) -
2424                                           superindex * sizeof(methodptr*));
2425                                 M_TST(REG_ITMP1);
2426                                 M_BEQ(1);
2427                                 M_IADD_IMM(REG_ZERO, 1, d);
2428
2429                                 if (super == NULL)      {
2430                                         emit_label_br(cd, BRANCH_LABEL_4);
2431                                 } else  {
2432                                         emit_label(cd, BRANCH_LABEL_3);
2433                                 }
2434                         }
2435
2436                         /* class instanceof code */
2437
2438                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2439
2440                                 if (super == NULL) {
2441                                         emit_label(cd, BRANCH_LABEL_2);
2442
2443                                         disp = dseg_add_unique_address(cd, NULL);
2444                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2445                                                                                 iptr->sx.s23.s3.c.ref,
2446                                                                                 disp);
2447
2448                                 } else {
2449                                         disp = dseg_add_address(cd, super->vftbl);
2450                                         M_TST(s1);
2451                                         emit_label_beq(cd, BRANCH_LABEL_5);
2452                                 }
2453
2454                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2455                                 M_ALD(REG_ITMP2, REG_PV, disp);
2456
2457                                 CODEGEN_CRITICAL_SECTION_START;
2458
2459                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2460                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2461                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2462
2463                                 CODEGEN_CRITICAL_SECTION_END;
2464
2465                                 M_SUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2466                                 M_EXTSW(REG_ITMP1, REG_ITMP1);
2467                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2468                                 M_CLR(d);
2469                                 M_BGT(1);
2470                                 M_IADD_IMM(REG_ZERO, 1, d);
2471
2472                                 if (super != NULL)
2473                                         emit_label(cd, BRANCH_LABEL_5);
2474                         }
2475
2476                         if (super == NULL) {
2477                                 emit_label(cd, BRANCH_LABEL_1);
2478                                 emit_label(cd, BRANCH_LABEL_4);
2479                         }
2480
2481                         emit_store_dst(jd, iptr, d);
2482                         }
2483                         break;
2484
2485                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2486
2487                         /* check for negative sizes and copy sizes to stack if necessary  */
2488
2489                         MCODECHECK((iptr->s1.argcount << 2) + 128);
2490
2491                         for (s1 = iptr->s1.argcount; --s1 >= 0; ) {
2492
2493                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2494
2495                                 /* copy SAVEDVAR sizes to stack */
2496
2497                                 if (!(var->flags & PREALLOC)) {
2498                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2499 #if defined(__DARWIN__)
2500                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 8);
2501 #else
2502                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + 3) * 8);
2503 #endif
2504                                 }
2505                         }
2506
2507                         /* a0 = dimension count */
2508
2509                         ICONST(REG_A0, iptr->s1.argcount);
2510
2511                         /* is patcher function set? */
2512
2513                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2514                                 disp = dseg_add_unique_address(cd, NULL);
2515
2516                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2517                                                                         iptr->sx.s23.s3.c.ref, disp);
2518                         } else {
2519                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2520                         }
2521
2522                         /* a1 = arraydescriptor */
2523
2524                         M_ALD(REG_A1, REG_PV, disp);
2525
2526                         /* a2 = pointer to dimensions = stack pointer */
2527
2528 #if defined(__DARWIN__)
2529                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 8);
2530 #else
2531                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 8);
2532 #endif
2533
2534                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2535                         M_ALD(REG_ITMP3, REG_PV, disp);
2536                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
2537                         M_MTCTR(REG_ITMP3);
2538                         M_JSR;
2539
2540                         /* check for exception before result assignment */
2541                         emit_exception_check(cd, iptr);
2542
2543                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2544                         M_INTMOVE(REG_RESULT, d);
2545                         emit_store_dst(jd, iptr, d);
2546                         break;
2547
2548                 default:
2549                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2550                                                                                    iptr->opc);
2551                         return false;
2552         } /* switch */
2553
2554         } /* for instruction */
2555
2556         } /* if (bptr -> flags >= BBREACHED) */
2557         } /* for basic block */
2558
2559         /* generate traps */
2560
2561         emit_patcher_traps(jd);
2562
2563         /* everything's ok */
2564
2565         return true;
2566 }
2567
2568
2569 /* codegen_emit_stub_native ****************************************************
2570
2571    Emits a stub routine which calls a native method.
2572
2573 *******************************************************************************/
2574
2575 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f, int skipparams)
2576 {
2577         methodinfo  *m;
2578         codeinfo    *code;
2579         codegendata *cd;
2580         methoddesc  *md;
2581         s4           i, j;
2582         s4           t;
2583         int          s1, s2;
2584         int          disp;
2585
2586         /* get required compiler data */
2587
2588         m    = jd->m;
2589         code = jd->code;
2590         cd   = jd->cd;
2591
2592         /* Sanity check. */
2593
2594         assert(!code_is_leafmethod(code));
2595
2596         /* set some variables */
2597
2598         md = m->parseddesc;
2599
2600         /* calculate stackframe size */
2601
2602         cd->stackframesize =
2603                 sizeof(stackframeinfo_t) / SIZEOF_VOID_P +
2604                 sizeof(localref_table) / SIZEOF_VOID_P +
2605                 4 +                            /* 4 stackframeinfo arguments (darwin)*/
2606                 nmd->paramcount  +
2607                 nmd->memuse;
2608
2609 /*      cd->stackframesize = (cd->stackframesize + 3) & ~3;*/ /* keep stack 16-byte aligned */
2610
2611         /* create method header */
2612
2613         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
2614         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
2615         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
2616         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
2617         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
2618
2619         /* generate code */
2620
2621         M_MFLR(REG_ZERO);
2622         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
2623         M_STDU(REG_SP, REG_SP, -(cd->stackframesize * 8));
2624
2625         /* save integer and float argument registers */
2626
2627         for (i = 0; i < md->paramcount; i++) {
2628                 if (!md->params[i].inmemory) {
2629                         s1 = md->params[i].regoff;
2630
2631                         switch (md->paramtypes[i].type) {
2632                         case TYPE_INT:
2633                         case TYPE_LNG:
2634                         case TYPE_ADR:
2635                                 M_LST(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2636                                 break;
2637                         case TYPE_FLT:
2638                         case TYPE_DBL:
2639                                 M_DST(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2640                                 break;
2641                         }
2642                 }
2643         }
2644
2645         /* create native stack info */
2646
2647         M_MOV(REG_SP, REG_A0);
2648         M_MOV(REG_PV, REG_A1);
2649         disp = dseg_add_functionptr(cd, codegen_start_native_call);
2650         M_ALD(REG_ITMP1, REG_PV, disp);
2651         M_ALD(REG_ITMP1, REG_ITMP1, 0);         /* TOC */
2652         M_MTCTR(REG_ITMP1);
2653         M_JSR;
2654
2655         /* remember class argument */
2656
2657         if (m->flags & ACC_STATIC)
2658                 M_MOV(REG_RESULT, REG_ITMP3);
2659
2660         /* restore integer and float argument registers */
2661
2662         for (i = 0; i < md->paramcount; i++) {
2663                 if (!md->params[i].inmemory) {
2664                         s1 = md->params[i].regoff;
2665
2666                         switch (md->paramtypes[i].type) {
2667                         case TYPE_INT:
2668                         case TYPE_LNG:
2669                         case TYPE_ADR:
2670                                 M_LLD(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2671                                 break;
2672                         case TYPE_FLT:
2673                         case TYPE_DBL:
2674                                 M_DLD(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2675                                 break;
2676                         }
2677                 }
2678         }
2679
2680         /* copy or spill arguments to new locations */
2681
2682         for (i = md->paramcount - 1, j = i + skipparams; i >= 0; i--, j--) {
2683                 t = md->paramtypes[i].type;
2684
2685                 if (IS_INT_LNG_TYPE(t)) {
2686                         if (!md->params[i].inmemory) {
2687                                 s1 = md->params[i].regoff;
2688                                 s2 = nmd->params[j].regoff;
2689
2690                                 if (!nmd->params[j].inmemory)
2691                                         M_INTMOVE(s1, s2);
2692                                 else
2693                                         M_LST(s1, REG_SP, s2);
2694                         }
2695                         else {
2696                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
2697                                 s2 = nmd->params[j].regoff;
2698
2699                                 M_LLD(REG_ITMP1, REG_SP, s1);
2700                                 M_LST(REG_ITMP1, REG_SP, s2);
2701                         }
2702                 }
2703                 else {
2704                         /* We only copy spilled float arguments, as the float
2705                            argument registers keep unchanged. */
2706
2707                         if (md->params[i].inmemory) {
2708                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
2709                                 s2 = nmd->params[j].regoff;
2710
2711                                 M_DLD(REG_FTMP1, REG_SP, s1);
2712
2713                                 if (IS_2_WORD_TYPE(t))
2714                                         M_DST(REG_FTMP1, REG_SP, s2);
2715                                 else
2716                                         M_FST(REG_FTMP1, REG_SP, s2 + 4);
2717                         }
2718                 }
2719         }
2720
2721         /* Handle native Java methods. */
2722
2723         if (m->flags & ACC_NATIVE) {
2724                 /* put class into second argument register */
2725
2726                 if (m->flags & ACC_STATIC)
2727                         M_MOV(REG_ITMP3, REG_A1);
2728
2729                 /* put env into first argument register */
2730
2731                 disp = dseg_add_unique_address(cd, _Jv_env);
2732                 M_ALD(REG_A0, REG_PV, disp);
2733         }
2734
2735         /* Call the native function. */
2736         /* native functions have a different TOC for sure */
2737
2738         M_AST(REG_TOC, REG_SP, 40);     /* save old TOC */
2739         disp = dseg_add_functionptr(cd, f);
2740         M_ALD(REG_ITMP3, REG_PV, disp);
2741         M_ALD(REG_TOC, REG_ITMP3, 8);   /* load TOC from func. descriptor */
2742         M_ALD(REG_ITMP3, REG_ITMP3, 0);
2743         M_MTCTR(REG_ITMP3);
2744         M_JSR;
2745         M_ALD(REG_TOC, REG_SP, 40);     /* restore TOC */
2746
2747         /* save return value */
2748
2749         if (md->returntype.type != TYPE_VOID) {
2750                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
2751                         M_LST(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2752                 }
2753                 else {
2754                         M_DST(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2755                 }
2756         }
2757
2758         /* remove native stackframe info */
2759
2760         M_MOV(REG_SP, REG_A0);
2761         M_MOV(REG_PV, REG_A1);
2762         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
2763         M_ALD(REG_ITMP1, REG_PV, disp);
2764         M_ALD(REG_ITMP1, REG_ITMP1, 0); /* XXX what about TOC? */
2765         M_MTCTR(REG_ITMP1);
2766         M_JSR;
2767         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
2768
2769         /* restore return value */
2770
2771         if (md->returntype.type != TYPE_VOID) {
2772                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
2773                         M_LLD(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2774                 }
2775                 else {
2776                         M_DLD(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2777                 }
2778         }
2779
2780         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2781         M_MTLR(REG_ITMP2_XPC);
2782         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe           */
2783
2784         /* check for exception */
2785
2786         M_TST(REG_ITMP1_XPTR);
2787         M_BNE(1);                           /* if no exception then return        */
2788
2789         M_RET;
2790
2791         /* handle exception */
2792
2793         M_LADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
2794
2795         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
2796         M_ALD(REG_ITMP3, REG_PV, disp);
2797         M_MTCTR(REG_ITMP3);
2798         M_RTS;
2799 }
2800
2801
2802 /*
2803  * These are local overrides for various environment variables in Emacs.
2804  * Please do not remove this and leave it at the end of the file, where
2805  * Emacs will automagically detect them.
2806  * ---------------------------------------------------------------------
2807  * Local variables:
2808  * mode: c
2809  * indent-tabs-mode: t
2810  * c-basic-offset: 4
2811  * tab-width: 4
2812  * End:
2813  * vim:noexpandtab:sw=4:ts=4:
2814  */