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, 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 #include <assert.h>
  29 #include <stdint.h>
  30 #include <stdio.h>
  31 #include <signal.h>
  32
  33 #include "vm/types.h"
  34
  35 #include "md-abi.h"
  36
  37 #include "vm/jit/powerpc64/arch.h"
  38 #include "vm/jit/powerpc64/codegen.h"
  39
  40 #include "mm/memory.h"
  41
  42 #include "native/localref.h"
  43 #include "native/native.h"
  44
  45 #include "threads/lock-common.h"
  46
  47 #include "vm/builtin.h"
  48 #include "vm/exceptions.hpp"
  49 #include "vm/global.h"
  50 #include "vm/vm.hpp"
  51
  52 #include "vm/jit/abi.h"
  53 #include "vm/jit/abi-asm.h"
  54 #include "vm/jit/asmpart.h"
  55 #include "vm/jit/codegen-common.h"
  56 #include "vm/jit/dseg.h"
  57 #include "vm/jit/emit-common.h"
  58 #include "vm/jit/jit.h"
  59 #include "vm/jit/linenumbertable.h"
  60 #include "vm/jit/parse.h"
  61 #include "vm/jit/patcher-common.h"
  62 #include "vm/jit/reg.h"
  63 #include "vm/jit/replace.h"
  64 #include "vm/jit/stacktrace.hpp"
  65 #include "vm/jit/trap.h"
  66
  67 #include "vmcore/loader.h"
  68 #include "vmcore/options.h"
  69
  70 #if defined(ENABLE_LSRA)
  71 # include "vm/jit/allocator/lsra.h"
  72 #endif
  73
  74
  75 /* codegen_emit ****************************************************************
  76
  77    Generates machine code.
  78
  79 *******************************************************************************/
  80
  81 bool codegen_emit(jitdata *jd)
  82 {
  83         methodinfo         *m;
  84         codeinfo           *code;
  85         codegendata        *cd;
  86         registerdata       *rd;
  87         s4                  len, s1, s2, s3, d, disp;
  88         ptrint              a;
  89         varinfo            *var;
  90         basicblock         *bptr;
  91         instruction        *iptr;
  92         u2                  currentline;
  93         methodinfo         *lm;             /* local methodinfo for ICMD_INVOKE*  */
  94         unresolved_method  *um;
  95         builtintable_entry *bte;
  96         methoddesc         *md;
  97         s4                  fieldtype;
  98         s4                  varindex;
  99         unresolved_field   *uf;
 100         fieldinfo          *fi;
 101
 102         /* get required compiler data */
 103
 104         m    = jd->m;
 105         code = jd->code;
 106         cd   = jd->cd;
 107         rd   = jd->rd;
 108
 109         /* prevent compiler warnings */
 110
 111         d   = 0;
 112         lm  = NULL;
 113         um  = NULL;
 114         bte = NULL;
 115         uf  = NULL;
 116
 117         {
 118         s4 i, p, t, l;
 119         s4 savedregs_num;
 120
 121         savedregs_num = 0;
 122
 123         /* space to save used callee saved registers */
 124
 125         savedregs_num += (INT_SAV_CNT - rd->savintreguse);
 126         savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
 127
 128         cd->stackframesize = rd->memuse + savedregs_num;
 129
 130 #if defined(ENABLE_THREADS)
 131         /* space to save argument of monitor_enter and Return Values to survive */
 132     /* monitor_exit. The stack position for the argument can not be shared  */
 133         /* with place to save the return register on PPC64, since both values     */
 134         /* reside in R3 */
 135         if (checksync && code_is_synchronized(code)) {
 136                 /* reserve 2 slots for long/double return values for monitorexit */
 137                 cd->stackframesize += 2;
 138         }
 139
 140 #endif
 141
 142         /* create method header */
 143
 144         /* align stack to 16-bytes */
 145
 146 /* FIXME */
 147 /*      if (!m->isleafmethod || opt_verbosecall) */
 148 /*              stackframesize = (stackframesize + 3) & ~3;
 149 */
 150 /*      else if (m->isleafmethod && (stackframesize == LA_WORD_SIZE)) */
 151 /*              stackframesize = 0; */
 152
 153         (void) dseg_add_unique_address(cd, code);                      /* CodeinfoPointer */
 154         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8);             /* FrameSize       */
 155
 156         code->synchronizedoffset = rd->memuse * 8;
 157
 158         /* REMOVEME: We still need it for exception handling in assembler. */
 159
 160         if (code_is_leafmethod(code))
 161                 (void) dseg_add_unique_s4(cd, 1);
 162         else
 163                 (void) dseg_add_unique_s4(cd, 0);
 164
 165         (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave         */
 166         (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave         */
 167
 168         /* create stack frame (if necessary) */
 169
 170         if (!code_is_leafmethod(code)) {
 171                 M_MFLR(REG_ZERO);
 172                 M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 173         }
 174
 175         if (cd->stackframesize)
 176                 M_STDU(REG_SP, REG_SP, -cd->stackframesize * 8);
 177
 178         /* save return address and used callee saved registers */
 179
 180         p = cd->stackframesize;
 181         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 182                 p--; M_LST(rd->savintregs[i], REG_SP, p * 8);
 183         }
 184         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
 185                 p --; M_DST(rd->savfltregs[i], REG_SP, p * 8);
 186         }
 187
 188         /* take arguments out of register or stack frame */
 189
 190         md = m->parseddesc;
 191
 192         for (p = 0, l = 0; p < md->paramcount; p++) {
 193                 t = md->paramtypes[p].type;
 194                 varindex = jd->local_map[l*5 + t];
 195                 l++;
 196                 if (IS_2_WORD_TYPE(t))    /* increment local counter for 2 word types */
 197                         l++;
 198                 if (varindex == UNUSED)
 199                         continue;
 200
 201                 var = VAR(varindex);
 202                 s1  = md->params[p].regoff;
 203
 204                 if (IS_INT_LNG_TYPE(t)) {
 205                         if (!md->params[p].inmemory) {
 206                                 if (!IS_INMEMORY(var->flags))
 207                                         M_INTMOVE(s1, var->vv.regoff);
 208                                 else
 209                                         M_LST(s1, REG_SP, var->vv.regoff);
 210                         }
 211                         else {
 212                                 if (!IS_INMEMORY(var->flags))
 213                                         M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 214                                 else
 215                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 216                         }
 217                 }
 218                 else {
 219                         if (!md->params[p].inmemory) {
 220                                 if (!IS_INMEMORY(var->flags))
 221                                         M_FLTMOVE(s1, var->vv.regoff);
 222                                 else
 223                                         M_DST(s1, REG_SP, var->vv.regoff);
 224                         }
 225                         else {
 226                                 if (!(var->flags & INMEMORY)) {
 227                                         if (IS_2_WORD_TYPE(t))
 228                                                 M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 229                                         else
 230                                                 M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 231                                 }
 232                                 else
 233                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 234                         }
 235                 }
 236         }
 237
 238         /* save monitorenter argument */
 239
 240 #if defined(ENABLE_THREADS)
 241
 242         if (checksync && code_is_synchronized(code)) {
 243
 244                 /* stackoffset for argument used for LOCK_monitor_exit */
 245                 s1 = rd->memuse;
 246
 247 #if !defined (NDEBUG)
 248                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 249                         M_AADD_IMM(REG_SP, -((LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8), REG_SP);
 250
 251                         for (p = 0; p < INT_ARG_CNT; p++)
 252                                 M_LST(abi_registers_integer_argument[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 253
 254                         for (p = 0; p < FLT_ARG_CNT; p++)
 255                                 M_DST(abi_registers_float_argument[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 256
 257                         /* used for LOCK_monitor_exit, adopt size because we created another stackframe */
 258                         s1 += (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT);
 259                 }
 260 #endif
 261
 262                 p = dseg_add_functionptr(cd, LOCK_monitor_enter);
 263                 M_ALD(REG_ITMP3, REG_PV, p);
 264                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
 265                 M_MTCTR(REG_ITMP3);
 266
 267                 /* get or test the lock object */
 268
 269                 if (m->flags & ACC_STATIC) {
 270                         p = dseg_add_address(cd, &m->clazz->object.header);
 271                         M_ALD(REG_A0, REG_PV, p);
 272                 }
 273                 else {
 274                         M_TST(REG_A0);
 275                         M_BNE(1);
 276                         M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_NullPointerException);
 277                 }
 278
 279                 M_AST(REG_A0, REG_SP, s1 * 8);                      /* rd->memuse * 8 */
 280                 M_JSR;
 281
 282 #if !defined(NDEBUG)
 283                 if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
 284                         for (p = 0; p < INT_ARG_CNT; p++)
 285                                 M_LLD(abi_registers_integer_argument[p], REG_SP, LA_SIZE + PA_SIZE + p * 8);
 286
 287                         for (p = 0; p < FLT_ARG_CNT; p++)
 288                                 M_DLD(abi_registers_float_argument[p], REG_SP, LA_SIZE + PA_SIZE + (INT_ARG_CNT + p) * 8);
 289
 290                         M_AADD_IMM(REG_SP, (LA_SIZE_IN_POINTERS + PA_SIZE_IN_POINTERS + ARG_CNT) * 8, REG_SP);
 291                 }
 292 #endif
 293         }
 294 #endif
 295
 296         /* call trace function */
 297 #if !defined (NDEBUG)
 298         if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
 299                 emit_verbosecall_enter(jd);
 300 #endif
 301
 302         }
 303
 304         /* end of header generation */
 305
 306         /* create replacement points */
 307
 308         REPLACEMENT_POINTS_INIT(cd, jd);
 309
 310         /* walk through all basic blocks */
 311
 312         for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
 313
 314                 bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
 315
 316                 if (bptr->flags >= BBREACHED) {
 317
 318                 /* branch resolving */
 319                 codegen_resolve_branchrefs(cd, bptr);
 320
 321                 /* handle replacement points */
 322
 323                 REPLACEMENT_POINT_BLOCK_START(cd, bptr);
 324
 325                 /* copy interface registers to their destination */
 326
 327                 len = bptr->indepth;
 328                 MCODECHECK(128+len);
 329
 330 #if defined(ENABLE_LSRA)
 331                 if (opt_lsra) {
 332                         while (len) {
 333                                 len--;
 334                                 var = VAR(bptr->invars[len]);
 335                                 if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 336                                         /* d = reg_of_var(m, var, REG_ITMP1); */
 337                                         if (!(var->flags & INMEMORY))
 338                                                 d = var->vv.regoff;
 339                                         else
 340                                                 d = REG_ITMP1;
 341                                         M_INTMOVE(REG_ITMP1, d);
 342                                         emit_store(jd, NULL, var, d);
 343                                 }
 344                         }
 345                 } else {
 346 #endif
 347                 while (len) {
 348                         len--;
 349                         var = VAR(bptr->invars[len]);
 350                         if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
 351                                 d = codegen_reg_of_var(0, var, REG_ITMP1);
 352                                 M_INTMOVE(REG_ITMP1, d);
 353                                 emit_store(jd, NULL, var, d);
 354                         }
 355                         else {
 356                                 assert((var->flags & INOUT));
 357                         }
 358                 }
 359
 360 #if defined(ENABLE_LSRA)
 361                 }
 362 #endif
 363                 /* walk through all instructions */
 364
 365                 len = bptr->icount;
 366                 currentline = 0;
 367
 368                 for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
 369                         if (iptr->line != currentline) {
 370                                 linenumbertable_list_entry_add(cd, iptr->line);
 371                                 currentline = iptr->line;
 372                         }
 373
 374                         MCODECHECK(128);   /* an instruction usually needs < 64 words      */
 375
 376                 switch (iptr->opc) {
 377                 case ICMD_NOP:        /* ...  ==> ...                                 */
 378                 case ICMD_POP:        /* ..., value  ==> ...                          */
 379                 case ICMD_POP2:       /* ..., value, value  ==> ...                   */
 380                         break;
 381
 382                 case ICMD_INLINE_START:
 383
 384                         REPLACEMENT_POINT_INLINE_START(cd, iptr);
 385                         break;
 386
 387                 case ICMD_INLINE_BODY:
 388
 389                         REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
 390                         linenumbertable_list_entry_add_inline_start(cd, iptr);
 391                         linenumbertable_list_entry_add(cd, iptr->line);
 392                         break;
 393
 394                 case ICMD_INLINE_END:
 395
 396                         linenumbertable_list_entry_add_inline_end(cd, iptr);
 397                         linenumbertable_list_entry_add(cd, iptr->line);
 398                         break;
 399
 400                 case ICMD_CHECKNULL:  /* ..., objectref  ==> ..., objectref           */
 401
 402                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 403                         M_TST(s1);
 404                         M_BEQ(0);
 405                         emit_nullpointer_check(cd, iptr, s1);
 406                         break;
 407
 408                 /* constant operations ************************************************/
 409
 410                 case ICMD_ICONST:     /* ...  ==> ..., constant                       */
 411
 412                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 413                         ICONST(d, iptr->sx.val.i);
 414                         emit_store_dst(jd, iptr, d);
 415                         break;
 416
 417                 case ICMD_LCONST:     /* ...  ==> ..., constant                       */
 418
 419                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 420                         LCONST(d, iptr->sx.val.l);
 421                         emit_store_dst(jd, iptr, d);
 422                         break;
 423
 424                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 425
 426                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 427                         a = dseg_add_float(cd, iptr->sx.val.f);
 428                         M_FLD(d, REG_PV, a);
 429                         emit_store_dst(jd, iptr, d);
 430                         break;
 431
 432                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 433
 434                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 435                         a = dseg_add_double(cd, iptr->sx.val.d);
 436                         M_DLD(d, REG_PV, a);
 437                         emit_store_dst(jd, iptr, d);
 438                         break;
 439
 440                 case ICMD_ACONST:     /* ...  ==> ..., constant                       */
 441
 442                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 443
 444                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 445                                 disp = dseg_add_unique_address(cd, iptr->sx.val.c.ref);
 446                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
 447                                                                         iptr->sx.val.c.ref,
 448                                                                     disp);
 449                         } else  {
 450                                 disp = dseg_add_address(cd, iptr->sx.val.anyptr);
 451                         }
 452                         M_ALD(d, REG_PV, disp);
 453                         emit_store_dst(jd, iptr, d);
 454                         break;
 455
 456
 457                 /* load/store/copy/move operations ************************************/
 458
 459                 case ICMD_ILOAD:      /* ...  ==> ..., content of local variable      */
 460                 case ICMD_ALOAD:      /* s1.localindex = local variable               */
 461                 case ICMD_LLOAD:
 462                 case ICMD_FLOAD:
 463                 case ICMD_DLOAD:
 464                 case ICMD_ISTORE:     /* ..., value  ==> ...                          */
 465                 case ICMD_LSTORE:
 466                 case ICMD_FSTORE:
 467                 case ICMD_DSTORE:
 468                 case ICMD_COPY:
 469                 case ICMD_MOVE:
 470
 471                         emit_copy(jd, iptr);
 472                         break;
 473
 474                 case ICMD_ASTORE:
 475                         if (!(iptr->flags.bits & INS_FLAG_RETADDR))
 476                                 emit_copy(jd, iptr);
 477                         break;
 478
 479
 480                 /* integer operations *************************************************/
 481
 482                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 483                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 484                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 485                         M_NEG(s1, d);
 486                         M_EXTSW(d, d);
 487                         emit_store_dst(jd, iptr, d);
 488                         break;
 489
 490                 case ICMD_LNEG:
 491                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 492                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 493                         M_NEG(s1, d);
 494                         emit_store_dst(jd, iptr, d);
 495                         break;
 496
 497
 498                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 499
 500                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 501                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 502                         M_INTMOVE(s1, d);
 503                         emit_store_dst(jd, iptr, d);
 504                         break;
 505
 506                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 507
 508                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 509                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 510                         M_ISEXT(s1, d);
 511                         emit_store_dst(jd, iptr, d);
 512                         break;
 513
 514                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 515
 516                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 517                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 518                         M_BSEXT(s1, d);
 519                         emit_store_dst(jd, iptr, d);
 520                         break;
 521
 522                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 523
 524                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 525                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 526                         M_CZEXT(s1, d);
 527                         emit_store_dst(jd, iptr, d);
 528                         break;
 529
 530                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 531
 532                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 533                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 534                         M_SSEXT(s1, d);
 535                         emit_store_dst(jd, iptr, d);
 536                         break;
 537
 538
 539                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 540
 541                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 542                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 543                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 544                         M_IADD(s1, s2, d);
 545                         M_EXTSW(d,d);
 546                         emit_store_dst(jd, iptr, d);
 547                         break;
 548
 549                 case ICMD_IINC:
 550                 case ICMD_IADDCONST:
 551
 552                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 553                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 554                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767)) {
 555                                 M_IADD_IMM(s1, iptr->sx.val.i, d);
 556                         } else {
 557                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 558                                 M_IADD(s1, REG_ITMP2, d);
 559                         }
 560                         M_EXTSW(d,d);
 561                         emit_store_dst(jd, iptr, d);
 562                         break;
 563
 564                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 565
 566                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 567                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 568                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 569                         M_LADD(s1, s2, d);
 570                         emit_store_dst(jd, iptr, d);
 571                         break;
 572
 573                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 574                                       /* sx.val.l = constant                          */
 575
 576                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 577                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 578                         /* XXX check me */
 579                         if ((iptr->sx.val.l >= -32768) && (iptr->sx.val.l <= 32767)) {
 580                                 M_LADD_IMM(s1, iptr->sx.val.l, d);
 581                         } else {
 582                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 583                                 M_LADD(s1, REG_ITMP2, d);
 584                         }
 585                         emit_store_dst(jd, iptr, d);
 586                         break;
 587
 588                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 589
 590                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 591                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 592                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 593                         M_SUB(s1, s2, d);
 594                         M_EXTSW(d, d);
 595                         emit_store_dst(jd, iptr, d);
 596                         break;
 597
 598                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 599                                       /* sx.val.i = constant                          */
 600
 601                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 602                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 603                         if ((iptr->sx.val.i >= -32767) && (iptr->sx.val.i <= 32768)) {
 604                                 M_IADD_IMM(s1, -iptr->sx.val.i, d);
 605                         } else {
 606                                 ICONST(REG_ITMP2, iptr->sx.val.i);
 607                                 M_SUB(s1, REG_ITMP2, d);
 608                         }
 609                         M_EXTSW(d, d);
 610                         emit_store_dst(jd, iptr, d);
 611                         break;
 612
 613                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 614
 615                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 616                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 617                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 618                         M_SUB(s1, s2, d);
 619                         emit_store_dst(jd, iptr, d);
 620                         break;
 621
 622                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 623                                       /* sx.val.l = constant                          */
 624
 625                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 626                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 627                         /* XXX check me */
 628                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767)) {
 629                                 M_LADD_IMM(s1, -iptr->sx.val.l, d);
 630                         } else {
 631                                 LCONST(REG_ITMP2, iptr->sx.val.l);
 632                                 M_SUB(s1, REG_ITMP2, d);
 633                         }
 634                         emit_store_dst(jd, iptr, d);
 635                         break;
 636
 637                 case ICMD_IDIV:
 638                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 639                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 640                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 641                         emit_arithmetic_check(cd, iptr, s2);
 642
 643                         M_DIV(s1, s2, d);
 644                         M_EXTSW(d, d);
 645                         emit_store_dst(jd, iptr, d);
 646                         break;
 647
 648                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 649
 650                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 651                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 652                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 653                         emit_arithmetic_check(cd, iptr, s2);
 654
 655                         M_DIV(s1, s2, d);
 656                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 657                         /* we only need to check this if we did a LDIV, not for IDIV */
 658                         M_MFXER(REG_ITMP2);
 659                         M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 660                         M_BLE(1);
 661                         M_MOV(s1, d);                           /* java specs says result == dividend */
 662                         emit_store_dst(jd, iptr, d);
 663                         break;
 664
 665                 case ICMD_IREM:
 666                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 667                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 668                         emit_arithmetic_check(cd, iptr, s2);
 669
 670                         M_DIV(s1, s2,  REG_ITMP3);
 671                         M_MUL(REG_ITMP3, s2, REG_ITMP2);
 672                         M_SUB(s1, REG_ITMP2,  REG_ITMP3);
 673                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 674
 675                         M_MOV(REG_ITMP3, d);
 676                         emit_store_dst(jd, iptr, d);
 677                         break;
 678
 679
 680                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 681                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 682                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 683                         emit_arithmetic_check(cd, iptr, s2);
 684
 685                         M_DIV(s1, s2,  REG_ITMP3);
 686                         /* we need to test if divident was 0x8000000000000, bit OV is set in XER in this case */
 687                         /* we only need to check this if we did a LDIV, not for IDIV */
 688                         M_MFXER(REG_ITMP2);
 689                         M_ANDIS(REG_ITMP2, 0x4000, REG_ITMP2);  /* test OV */
 690                         M_BLE(2);
 691                         LCONST(REG_ITMP3, 0);                   /* result == 0 in this case */
 692                         M_BR(2);
 693                         M_MUL(REG_ITMP3, s2, REG_ITMP2);
 694                         M_SUB(s1, REG_ITMP2,  REG_ITMP3);
 695                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 696
 697                         M_MOV(REG_ITMP3, d);
 698                         emit_store_dst(jd, iptr, d);
 699                         break;
 700
 701
 702                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 703                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 704                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 705                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 706                         M_MUL(s1, s2, d);
 707                         M_EXTSW(d, d);
 708                         emit_store_dst(jd, iptr, d);
 709                         break;
 710
 711                 case ICMD_LMUL:
 712                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 713                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 714                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 715                         M_MUL(s1, s2, d);
 716                         emit_store_dst(jd, iptr, d);
 717                         break;
 718
 719                 case ICMD_IMULCONST:  /* ..., value  ==> ..., value * constant        */
 720                                       /* sx.val.i = constant                          */
 721
 722                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 723                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 724                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
 725                                 M_MUL_IMM(s1, iptr->sx.val.i, d);
 726                         else {
 727                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 728                                 M_MUL(s1, REG_ITMP3, d);
 729                         }
 730                         M_EXTSW(d, d);
 731                         emit_store_dst(jd, iptr, d);
 732                         break;
 733                 case ICMD_LMULCONST:
 734                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 735                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 736                         if ((iptr->sx.val.l >= -32767) && (iptr->sx.val.l <= 32767))
 737                                 M_MUL_IMM(s1, iptr->sx.val.l, d);
 738                         else {
 739                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 740                                 M_MUL(s1, REG_ITMP3, d);
 741                         }
 742                         emit_store_dst(jd, iptr, d);
 743                         break;
 744
 745                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value << constant       */
 746
 747                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 748                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 749                         M_SRA_IMM(s1, iptr->sx.val.i, d);
 750                         M_ADDZE(d, d);
 751                         M_EXTSW(d, d);
 752                         emit_store_dst(jd, iptr, d);
 753                         break;
 754
 755                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 756
 757                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 758                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 759                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 760                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 761                         M_SLL(s1, REG_ITMP3, d);
 762                         M_EXTSW(d, d);
 763                         emit_store_dst(jd, iptr, d);
 764                         break;
 765
 766                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 767                                       /* sx.val.i = constant                             */
 768
 769                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 770                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 771                         M_SLL_IMM(s1, iptr->sx.val.i & 0x1f, d);
 772                         M_EXTSW(d,d);
 773                         emit_store_dst(jd, iptr, d);
 774                         break;
 775
 776                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 777
 778                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 779                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 780                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 781                         M_AND_IMM(s2, 0x1f, REG_ITMP3);
 782                         M_SRA(s1, REG_ITMP3, d);
 783                         emit_store_dst(jd, iptr, d);
 784                         break;
 785
 786                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 787                                       /* sx.val.i = constant                             */
 788
 789                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 790                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 791                         M_SRA_IMM(s1, iptr->sx.val.i & 0x1f, d);
 792                         emit_store_dst(jd, iptr, d);
 793                         break;
 794
 795                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 796
 797                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 798                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 799                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 800                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 801                         M_MOV(s1, REG_ITMP1);
 802                         M_CLR_HIGH(REG_ITMP1);
 803                         M_SRL(REG_ITMP1, REG_ITMP2, d);
 804                         M_EXTSW(d,d);   /* for the case it was shift 0 bits */
 805                         emit_store_dst(jd, iptr, d);
 806                         break;
 807
 808                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 809                                       /* sx.val.i = constant                             */
 810
 811                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 812                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 813                         if (iptr->sx.val.i & 0x1f) {
 814                                 M_MOV(s1, REG_ITMP1);
 815                                 M_CLR_HIGH(REG_ITMP1);
 816                                 M_SRA_IMM(REG_ITMP1, iptr->sx.val.i & 0x1f, d);
 817                         } else {
 818                                 M_INTMOVE(s1, d);
 819                         }
 820                         emit_store_dst(jd, iptr, d);
 821                         break;
 822
 823                 case ICMD_LSHLCONST:
 824                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 825                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 826                         M_SLL_IMM(s1, iptr->sx.val.i & 0x3f, d);
 827                         emit_store_dst(jd, iptr, d);
 828                         break;
 829                 case ICMD_LSHL:
 830                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 831                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 832                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 833                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 834                         M_SLL(s1, REG_ITMP2, d);
 835                         emit_store_dst(jd, iptr, d);
 836                         break;
 837                 case ICMD_LSHRCONST:
 838                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 839                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 840                         M_SRA_IMM(s1, iptr->sx.val.i & 0x3f, d);
 841                         emit_store_dst(jd, iptr, d);
 842                         break;
 843                 case ICMD_LSHR:
 844                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 845                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 846                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 847                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 848                         M_SRA(s1, REG_ITMP2, d);
 849                         emit_store_dst(jd, iptr, d);
 850                         break;
 851                 case ICMD_LUSHRCONST:
 852                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 853                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 854                         M_SRL_IMM(s1, iptr->sx.val.i & 0x3f, d);
 855                         emit_store_dst(jd, iptr, d);
 856                         break;
 857                 case ICMD_LUSHR:
 858                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 859                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 860                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 861                         M_AND_IMM(s2, 0x3f, REG_ITMP2);
 862                         M_SRL(s1, REG_ITMP2, d);
 863                         emit_store_dst(jd, iptr, d);
 864                         break;
 865
 866                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 867                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 868                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 869                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 870                         M_AND(s1, s2, d);
 871 /*                      M_EXTSW(d, d);*/
 872                         emit_store_dst(jd, iptr, d);
 873                         break;
 874
 875                 case ICMD_LAND:
 876                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 877                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 878                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 879                         M_AND(s1, s2, d);
 880                         emit_store_dst(jd, iptr, d);
 881                         break;
 882
 883                 case ICMD_IANDCONST:  /* ..., value  ==> ..., value & constant        */
 884                                       /* sx.val.i = constant                          */
 885
 886                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 887                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 888                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535)) {
 889                                 M_AND_IMM(s1, iptr->sx.val.i, d);
 890                                 }
 891                         /*
 892                         else if (iptr->sx.val.i == 0xffffff) {
 893                                 M_RLWINM(s1, 0, 8, 31, d);
 894                                 }
 895                         */
 896                         else {
 897                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 898                                 M_AND(s1, REG_ITMP3, d);
 899                         }
 900                         emit_store_dst(jd, iptr, d);
 901                         break;
 902
 903                 case ICMD_LANDCONST:  /* ..., value  ==> ..., value & constant        */
 904                                       /* sx.val.l = constant                          */
 905
 906                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 907                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 908                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 909                                 M_AND_IMM(s1, iptr->sx.val.l, d);
 910                         /*
 911                         else if (iptr->sx.val.l == 0xffffff) {
 912                                 M_RLWINM(s1, 0, 8, 31, d);
 913                                 }
 914                         */
 915                         else {
 916                                 LCONST(REG_ITMP3, iptr->sx.val.l);
 917                                 M_AND(s1, REG_ITMP3, d);
 918                         }
 919                         emit_store_dst(jd, iptr, d);
 920                         break;
 921
 922                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 923                                       /* sx.val.i = constant                             */
 924                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 925                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 926 #if 0
 927                         /* fast division, result in REG_ITMP3) */
 928                         M_SRA_IMM(s1, iptr->sx.val.i, REG_ITMP3);
 929                         M_ADDZE(REG_ITMP3, REG_ITMP3);
 930
 931                         M_SUB(s1, REG_ITMP3, d);
 932                         M_EXTSW(d, d);
 933                         emit_store_dst(jd, iptr, d);
 934                         break;
 935 #else
 936
 937                         M_MOV(s1, REG_ITMP2);
 938                         M_CMPI(s1, 0);
 939                         M_BGE(1 + 3*(iptr->sx.val.i >= 32768));
 940                         if (iptr->sx.val.i >= 32768) {
 941                                 M_ADDIS(REG_ZERO, iptr->sx.val.i >> 16, REG_ITMP2);
 942                                 M_EXTSW(REG_ITMP2, REG_ITMP2);
 943                                 M_OR_IMM(REG_ITMP2, iptr->sx.val.i, REG_ITMP2);
 944                                 M_IADD(s1, REG_ITMP2, REG_ITMP2);
 945                         } else {
 946                                 M_IADD_IMM(s1, iptr->sx.val.i, REG_ITMP2);
 947                         }
 948                         {
 949                                 int b=0, m = iptr->sx.val.i;
 950                                 while (m >>= 1)
 951                                         ++b;
 952                                 M_RLWINM(REG_ITMP2, 0, 0, 30-b, REG_ITMP2);
 953                         }
 954                         M_SUB(s1, REG_ITMP2, d);
 955                         M_EXTSW(d, d);
 956                         emit_store_dst(jd, iptr, d);
 957                         break;
 958 #endif
 959
 960                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 961                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 962                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 963                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 964                         M_OR(s1, s2, d);
 965 /*                      M_EXTSW(d,d);*/
 966                         emit_store_dst(jd, iptr, d);
 967                         break;
 968
 969                 case ICMD_LOR:
 970
 971                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 972                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 973                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
 974                         M_OR(s1, s2, d);
 975                         emit_store_dst(jd, iptr, d);
 976                         break;
 977
 978                 case ICMD_IORCONST:   /* ..., value  ==> ..., value | constant        */
 979                                       /* sx.val.i = constant                          */
 980
 981                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 982                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 983                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
 984                                 M_OR_IMM(s1, iptr->sx.val.i, d);
 985                         else {
 986                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 987                                 M_OR(s1, REG_ITMP3, d);
 988                         }
 989                         emit_store_dst(jd, iptr, d);
 990                         break;
 991
 992                 case ICMD_LORCONST:   /* ..., value  ==> ..., value | constant        */
 993                                       /* sx.val.l = constant                          */
 994
 995                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 996                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 997                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
 998                                 M_OR_IMM(s1, iptr->sx.val.l, d);
 999                         else {
1000                                 LCONST(REG_ITMP3, iptr->sx.val.l);
1001                                 M_OR(s1, REG_ITMP3, d);
1002                         }
1003                         emit_store_dst(jd, iptr, d);
1004                         break;
1005
1006
1007                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
1008                 case ICMD_LXOR:
1009
1010                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1011                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1012                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1013                         M_XOR(s1, s2, d);
1014                         emit_store_dst(jd, iptr, d);
1015                         break;
1016
1017                 case ICMD_IXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1018                                       /* sx.val.i = constant                          */
1019
1020                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1021                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1022                         if ((iptr->sx.val.i >= 0) && (iptr->sx.val.i <= 65535))
1023                                 M_XOR_IMM(s1, iptr->sx.val.i, d);
1024                         else {
1025                                 ICONST(REG_ITMP3, iptr->sx.val.i);
1026                                 M_XOR(s1, REG_ITMP3, d);
1027                         }
1028                         emit_store_dst(jd, iptr, d);
1029                         break;
1030
1031                 case ICMD_LXORCONST:  /* ..., value  ==> ..., value ^ constant        */
1032                                       /* sx.val.l = constant                          */
1033
1034                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1035                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1036                         if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 65535))
1037                                 M_XOR_IMM(s1, iptr->sx.val.l, d);
1038                         else {
1039                                 LCONST(REG_ITMP3, iptr->sx.val.l);
1040                                 M_XOR(s1, REG_ITMP3, d);
1041                         }
1042                         emit_store_dst(jd, iptr, d);
1043                         break;
1044
1045                 case ICMD_LCMP:       /* ..., val1, val2  ==> ..., val1 cmp val2      */
1046
1047                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1048                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1049                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP3);
1050                         /* XXX implement me!!! */
1051                         vm_abort("codegen: implement ICMD_LCMP!");
1052                         emit_store_dst(jd, iptr, d);
1053                         break;
1054                         break;
1055
1056
1057                 /* floating operations ************************************************/
1058
1059                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
1060
1061                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1062                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1063                         M_FMOVN(s1, d);
1064                         emit_store_dst(jd, iptr, d);
1065                         break;
1066
1067                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
1068
1069                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1070                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1071                         M_FMOVN(s1, d);
1072                         emit_store_dst(jd, iptr, d);
1073                         break;
1074
1075                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1076
1077                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1078                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1079                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1080                         M_FADD(s1, s2, d);
1081                         emit_store_dst(jd, iptr, d);
1082                         break;
1083
1084                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
1085
1086                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1087                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1088                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1089                         M_DADD(s1, s2, d);
1090                         emit_store_dst(jd, iptr, d);
1091                         break;
1092
1093                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1094
1095                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1096                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1097                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1098                         M_FSUB(s1, s2, d);
1099                         emit_store_dst(jd, iptr, d);
1100                         break;
1101
1102                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
1103
1104                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1105                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1106                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1107                         M_DSUB(s1, s2, d);
1108                         emit_store_dst(jd, iptr, d);
1109                         break;
1110
1111                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1112
1113                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1114                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1115                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1116                         M_FMUL(s1, s2, d);
1117                         emit_store_dst(jd, iptr, d);
1118                         break;
1119
1120                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
1121
1122                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1123                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1124                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1125                         M_DMUL(s1, s2, d);
1126                         emit_store_dst(jd, iptr, d);
1127                         break;
1128
1129                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1130
1131                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1132                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1133                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1134                         M_FDIV(s1, s2, d);
1135                         emit_store_dst(jd, iptr, d);
1136                         break;
1137
1138                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
1139
1140                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1141                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1142                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1143                         M_DDIV(s1, s2, d);
1144                         emit_store_dst(jd, iptr, d);
1145                         break;
1146
1147                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
1148                 case ICMD_D2I:
1149
1150                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1151                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1152                         M_CLR(d);
1153                         disp = dseg_add_float(cd, 0.0);
1154                         M_FLD(REG_FTMP2, REG_PV, disp);
1155                         M_FCMPU(s1, REG_FTMP2);
1156                         M_BNAN(4);
1157                         disp = dseg_add_unique_s4(cd, 0);
1158                         M_CVTDL_C(s1, REG_FTMP1);
1159                         M_LDA(REG_ITMP1, REG_PV, disp);
1160                         M_STFIWX(REG_FTMP1, 0, REG_ITMP1);
1161                         M_ILD(d, REG_PV, disp);
1162                         emit_store_dst(jd, iptr, d);
1163                         break;
1164
1165                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
1166
1167                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1168                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1169                         M_FLTMOVE(s1, d);
1170                         emit_store_dst(jd, iptr, d);
1171                         break;
1172
1173                 case ICMD_D2F:       /* ..., value  ==> ..., (double) value           */
1174
1175                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1176                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP3);
1177                         M_CVTDF(s1, d);
1178                         emit_store_dst(jd, iptr, d);
1179                         break;
1180
1181                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
1182                 case ICMD_DCMPL:      /* == => 0, < => 1, > => -1                     */
1183
1184                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1185                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1186                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1187                         M_FCMPU(s2, s1);
1188                         M_IADD_IMM(REG_ZERO, -1, d);
1189                         M_BNAN(4);
1190                         M_BGT(3);
1191                         M_IADD_IMM(REG_ZERO, 0, d);
1192                         M_BGE(1);
1193                         M_IADD_IMM(REG_ZERO, 1, d);
1194                         emit_store_dst(jd, iptr, d);
1195                         break;
1196
1197                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
1198                 case ICMD_DCMPG:      /* == => 0, < => 1, > => -1                     */
1199
1200                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
1201                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1202                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1203                         M_FCMPU(s1, s2);
1204                         M_IADD_IMM(REG_ZERO, 1, d);
1205                         M_BNAN(4);
1206                         M_BGT(3);
1207                         M_IADD_IMM(REG_ZERO, 0, d);
1208                         M_BGE(1);
1209                         M_IADD_IMM(REG_ZERO, -1, d);
1210                         emit_store_dst(jd, iptr, d);
1211                         break;
1212
1213
1214                 /* memory operations **************************************************/
1215
1216                 case ICMD_ARRAYLENGTH: /* ..., arrayref  ==> ..., length              */
1217
1218                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1219                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1220                         emit_nullpointer_check(cd, iptr, s1);
1221                         M_ILD(d, s1, OFFSET(java_array_t, size));
1222                         emit_store_dst(jd, iptr, d);
1223                         break;
1224
1225                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
1226
1227                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1228                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1229                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1230                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1231                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1232                         /* implicit null-pointer check */
1233                         M_LBZX(d, s1, REG_ITMP2);
1234                         M_BSEXT(d, d);
1235                         emit_store_dst(jd, iptr, d);
1236                         break;
1237
1238                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1239
1240                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1241                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1242                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1243                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1244                         M_SLL_IMM(s2, 1, REG_ITMP2);
1245                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1246                         /* implicit null-pointer check */
1247                         M_LHZX(d, s1, REG_ITMP2);
1248                         emit_store_dst(jd, iptr, d);
1249                         break;
1250
1251                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1252
1253                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1254                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1255                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1256                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1257                         M_SLL_IMM(s2, 1, REG_ITMP2);
1258                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1259                         /* implicit null-pointer check */
1260                         M_LHAX(d, s1, REG_ITMP2);
1261                         emit_store_dst(jd, iptr, d);
1262                         break;
1263
1264                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1265
1266                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1267                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1268                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1269                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1270                         M_SLL_IMM(s2, 2, REG_ITMP2);
1271                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1272                         /* implicit null-pointer check */
1273                         M_LWAX(d, s1, REG_ITMP2);
1274                         emit_store_dst(jd, iptr, d);
1275                         break;
1276
1277                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1278
1279                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1280                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1281                         d = codegen_reg_of_dst(jd, iptr, PACK_REGS(REG_ITMP2, REG_ITMP1));
1282                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1283                         M_SLL_IMM(s2, 3, REG_ITMP2);
1284                         M_IADD(s1, REG_ITMP2, REG_ITMP2);
1285                         /* implicit null-pointer check */
1286                         M_LLD_INTERN(d, REG_ITMP2, OFFSET(java_longarray_t, data[0]));
1287                         emit_store_dst(jd, iptr, d);
1288                         break;
1289
1290                 case ICMD_FALOAD:     /* ..., arrayref, index  ==> ..., value         */
1291
1292                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1293                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1294                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1295                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1296                         M_SLL_IMM(s2, 2, REG_ITMP2);
1297                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1298                         /* implicit null-pointer check */
1299                         M_LFSX(d, s1, REG_ITMP2);
1300                         emit_store_dst(jd, iptr, d);
1301                         break;
1302
1303                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1304
1305                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1306                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1307                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1308                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1309                         M_SLL_IMM(s2, 3, REG_ITMP2);
1310                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1311                         /* implicit null-pointer check */
1312                         M_LFDX(d, s1, REG_ITMP2);
1313                         emit_store_dst(jd, iptr, d);
1314                         break;
1315
1316                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1317
1318                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1319                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1320                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1321                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1322                         M_SLL_IMM(s2, 3, REG_ITMP2);
1323                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1324                         /* implicit null-pointer check */
1325                         M_ALDX(d, s1, REG_ITMP2);
1326                         emit_store_dst(jd, iptr, d);
1327                         break;
1328
1329
1330                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1331
1332                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1333                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1334                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1335                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1336                         M_IADD_IMM(s2, OFFSET(java_bytearray_t, data[0]), REG_ITMP2);
1337                         /* implicit null-pointer check */
1338                         M_STBX(s3, s1, REG_ITMP2);
1339                         break;
1340
1341                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1342
1343                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1344                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1345                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1346                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1347                         M_SLL_IMM(s2, 1, REG_ITMP2);
1348                         M_IADD_IMM(REG_ITMP2, OFFSET(java_chararray_t, data[0]), REG_ITMP2);
1349                         /* implicit null-pointer check */
1350                         M_STHX(s3, s1, REG_ITMP2);
1351                         break;
1352
1353                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1354
1355                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1356                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1357                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1358                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1359                         M_SLL_IMM(s2, 1, REG_ITMP2);
1360                         M_IADD_IMM(REG_ITMP2, OFFSET(java_shortarray_t, data[0]), REG_ITMP2);
1361                         M_STHX(s3, s1, REG_ITMP2);
1362                         break;
1363
1364                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1365
1366                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1367                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1368                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1369                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1370                         M_SLL_IMM(s2, 2, REG_ITMP2);
1371                         M_IADD_IMM(REG_ITMP2, OFFSET(java_intarray_t, data[0]), REG_ITMP2);
1372                         /* implicit null-pointer check */
1373                         M_STWX(s3, s1, REG_ITMP2);
1374                         break;
1375
1376                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1377
1378                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1379                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1380                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1381                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1382                         M_SLL_IMM(s2, 3, REG_ITMP2);
1383                         M_IADD_IMM(REG_ITMP2, OFFSET(java_longarray_t, data[0]), REG_ITMP2);
1384                         /* implicit null-pointer check */
1385                         M_LSTX(s3, s1, REG_ITMP2);
1386                         break;
1387
1388                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1389
1390                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1391                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1392                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1393                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1394                         M_SLL_IMM(s2, 2, REG_ITMP2);
1395                         M_IADD_IMM(REG_ITMP2, OFFSET(java_floatarray_t, data[0]), REG_ITMP2);
1396                         /* implicit null-pointer check */
1397                         M_STFSX(s3, s1, REG_ITMP2);
1398                         break;
1399
1400                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1401
1402                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1403                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1404                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1405                         s3 = emit_load_s3(jd, iptr, REG_FTMP3);
1406                         M_SLL_IMM(s2, 3, REG_ITMP2);
1407                         M_IADD_IMM(REG_ITMP2, OFFSET(java_doublearray_t, data[0]), REG_ITMP2);
1408                         /* implicit null-pointer check */
1409                         M_STFDX(s3, s1, REG_ITMP2);
1410                         break;
1411
1412                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1413
1414                         s1 = emit_load_s1(jd, iptr, REG_A0);
1415                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1416                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1417                         s3 = emit_load_s3(jd, iptr, REG_A1);
1418
1419                         disp = dseg_add_functionptr(cd, BUILTIN_FAST_canstore);
1420                         M_ALD(REG_ITMP3, REG_PV, disp);
1421                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1422                         M_MTCTR(REG_ITMP3);
1423
1424                         M_INTMOVE(s1, REG_A0);
1425                         M_INTMOVE(s3, REG_A1);
1426
1427                         M_JSR;
1428                         emit_arraystore_check(cd, iptr);
1429
1430                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1431                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1432                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1433                         M_SLL_IMM(s2, 3, REG_ITMP2);
1434                         M_IADD_IMM(REG_ITMP2, OFFSET(java_objectarray_t, data[0]), REG_ITMP2);
1435                         /* implicit null-pointer check */
1436                         M_ASTX(s3, s1, REG_ITMP2);
1437                         break;
1438
1439
1440                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1441
1442                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1443                                 uf        = iptr->sx.s23.s3.uf;
1444                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1445                                 disp      = dseg_add_unique_address(cd, NULL);
1446
1447                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic,
1448                                                                         iptr->sx.s23.s3.uf, disp);
1449
1450                         }
1451                         else {
1452                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1453                                 fieldtype = fi->type;
1454                                 disp      = dseg_add_address(cd, fi->value);
1455
1456                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->clazz)) {
1457                                         patcher_add_patch_ref(jd, PATCHER_initialize_class, fi->clazz, disp);
1458                                 }
1459                         }
1460
1461                         M_ALD(REG_ITMP1, REG_PV, disp);
1462                         switch (fieldtype) {
1463                         case TYPE_INT:
1464                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1465                                 M_ILD_INTERN(d, REG_ITMP1, 0);
1466                                 break;
1467                         case TYPE_LNG:
1468                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1469                                 M_LLD(d, REG_ITMP1, 0);
1470                                 break;
1471                         case TYPE_ADR:
1472                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1473                                 M_ALD_INTERN(d, REG_ITMP1, 0);
1474                                 break;
1475                         case TYPE_FLT:
1476                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1477                                 M_FLD_INTERN(d, REG_ITMP1, 0);
1478                                 break;
1479                         case TYPE_DBL:
1480                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1481                                 M_DLD_INTERN(d, REG_ITMP1, 0);
1482                                 break;
1483                         }
1484                         emit_store_dst(jd, iptr, d);
1485                         break;
1486
1487                 case ICMD_PUTSTATIC:  /* ..., value  ==> ...                          */
1488
1489
1490                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1491                                 uf        = iptr->sx.s23.s3.uf;
1492                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1493                                 disp      = dseg_add_unique_address(cd, NULL);
1494
1495                                 patcher_add_patch_ref(jd, PATCHER_get_putstatic,
1496                                                                         iptr->sx.s23.s3.uf, disp);
1497                         }
1498                         else {
1499                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1500                                 fieldtype = fi->type;
1501                                 disp      = dseg_add_address(cd, fi->value);
1502
1503                                 if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->clazz)) {
1504                                         patcher_add_patch_ref(jd, PATCHER_initialize_class, fi->clazz, disp);
1505                                 }
1506                         }
1507
1508                         M_ALD(REG_ITMP1, REG_PV, disp);
1509                         switch (fieldtype) {
1510                         case TYPE_INT:
1511                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1512                                 M_IST_INTERN(s1, REG_ITMP1, 0);
1513                                 break;
1514                         case TYPE_LNG:
1515                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1516                                 M_LST_INTERN(s1, REG_ITMP1, 0);
1517                                 break;
1518                         case TYPE_ADR:
1519                                 s1 = emit_load_s1(jd, iptr, REG_ITMP2);
1520                                 M_AST_INTERN(s1, REG_ITMP1, 0);
1521                                 break;
1522                         case TYPE_FLT:
1523                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1524                                 M_FST_INTERN(s1, REG_ITMP1, 0);
1525                                 break;
1526                         case TYPE_DBL:
1527                                 s1 = emit_load_s1(jd, iptr, REG_FTMP2);
1528                                 M_DST_INTERN(s1, REG_ITMP1, 0);
1529                                 break;
1530                         }
1531                         break;
1532
1533
1534                 case ICMD_GETFIELD:   /* ...  ==> ..., value                          */
1535
1536                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1537
1538                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1539                                 uf        = iptr->sx.s23.s3.uf;
1540                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1541                                 disp      = 0;
1542
1543                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1544                         }
1545                         else {
1546                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1547                                 fieldtype = fi->type;
1548                                 disp      = fi->offset;
1549                         }
1550
1551                         /* implicit null-pointer check */
1552                         switch (fieldtype) {
1553                         case TYPE_INT:
1554                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1555                                 M_ILD(d, s1, disp);
1556                                 break;
1557                         case TYPE_LNG:
1558                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1559                                 M_LLD(d, s1, disp);
1560                                 break;
1561                         case TYPE_ADR:
1562                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
1563                                 M_ALD(d, s1, disp);
1564                                 break;
1565                         case TYPE_FLT:
1566                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1567                                 M_FLD(d, s1, disp);
1568                                 break;
1569                         case TYPE_DBL:
1570                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1571                                 M_DLD(d, s1, disp);
1572                                 break;
1573                         }
1574                         emit_store_dst(jd, iptr, d);
1575                         break;
1576
1577                 case ICMD_PUTFIELD:   /* ..., value  ==> ...                          */
1578
1579                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1580
1581                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1582                                 uf        = iptr->sx.s23.s3.uf;
1583                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1584                                 disp      = 0;
1585                         }
1586                         else {
1587                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1588                                 fieldtype = fi->type;
1589                                 disp      = fi->offset;
1590                         }
1591
1592                         if (IS_INT_LNG_TYPE(fieldtype)) {
1593                                 s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1594                         }
1595                         else
1596                                 s2 = emit_load_s2(jd, iptr, REG_FTMP2);
1597
1598                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1599                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1600                         }
1601
1602
1603                         /* implicit null-pointer check */
1604                         switch (fieldtype) {
1605                         case TYPE_INT:
1606                                 M_IST(s2, s1, disp);
1607                                 break;
1608                         case TYPE_LNG:
1609                                 M_LST(s2, s1, disp);
1610                                 break;
1611                         case TYPE_ADR:
1612                                 M_AST(s2, s1, disp);
1613                                 break;
1614                         case TYPE_FLT:
1615                                 M_FST(s2, s1, disp);
1616                                 break;
1617                         case TYPE_DBL:
1618                                 M_DST(s2, s1, disp);
1619                                 break;
1620                         }
1621                         break;
1622
1623
1624                 /* branch operations **************************************************/
1625
1626                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1627
1628                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1629                         M_LNGMOVE(s1, REG_ITMP1_XPTR);
1630
1631 #ifdef ENABLE_VERIFIER
1632                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1633                                 patcher_add_patch_ref(jd, PATCHER_resolve_class,
1634                                                                         iptr->sx.s23.s2.uc, 0);
1635                         }
1636 #endif /* ENABLE_VERIFIER */
1637
1638                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1639                         M_ALD(REG_ITMP2, REG_PV, disp);
1640                         M_MTCTR(REG_ITMP2);
1641
1642                         if (code_is_leafmethod(code))
1643                                 M_MFLR(REG_ITMP3);                          /* save LR        */
1644
1645                         M_BL(0);                                        /* get current PC */
1646                         M_MFLR(REG_ITMP2_XPC);
1647
1648                         if (code_is_leafmethod(code))
1649                                 M_MTLR(REG_ITMP3);                          /* restore LR     */
1650
1651                         M_RTS;                                          /* jump to CTR    */
1652                         ALIGNCODENOP;
1653                         break;
1654
1655                 case ICMD_GOTO:         /* ... ==> ...                                */
1656                 case ICMD_RET:          /* ... ==> ...                                */
1657
1658                         emit_br(cd, iptr->dst.block);
1659                         ALIGNCODENOP;
1660                         break;
1661
1662                 case ICMD_JSR:          /* ... ==> ...                                */
1663
1664                         emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
1665                         ALIGNCODENOP;
1666                         break;
1667
1668                 case ICMD_IFNULL:       /* ..., value ==> ...                         */
1669
1670                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1671                         M_TST(s1);
1672                         emit_beq(cd, iptr->dst.block);
1673                         break;
1674
1675                 case ICMD_IFNONNULL:    /* ..., value ==> ...                         */
1676
1677                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1678                         M_TST(s1);
1679                         emit_bne(cd, iptr->dst.block);
1680                         break;
1681
1682                 case ICMD_IFLT:
1683                 case ICMD_IFLE:
1684                 case ICMD_IFNE:
1685                 case ICMD_IFGT:
1686                 case ICMD_IFGE:
1687                 case ICMD_IFEQ:         /* ..., value ==> ...                         */
1688
1689                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1690                         if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
1691                                 M_CMPI(s1, iptr->sx.val.i);
1692                         else {
1693                                 ICONST(REG_ITMP2, iptr->sx.val.i);
1694                                 M_CMP(s1, REG_ITMP2);
1695                         }
1696                         emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
1697                         break;
1698
1699                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1700                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1701                         LCONST(REG_ITMP2, iptr->sx.val.l);
1702                         M_CMP(s1, REG_ITMP2);
1703                         emit_beq(cd, iptr->dst.block);
1704                         break;
1705                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1706                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1707                         LCONST(REG_ITMP2, iptr->sx.val.l);
1708                         M_CMP(s1, REG_ITMP2);
1709                         emit_blt(cd, iptr->dst.block);
1710                         break;
1711                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1712                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1713                         LCONST(REG_ITMP2, iptr->sx.val.l);
1714                         M_CMP(s1, REG_ITMP2);
1715                         emit_ble(cd, iptr->dst.block);
1716                         break;
1717
1718                 case ICMD_IF_LNE:       /* ..., value ==> ... */
1719                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1720                         LCONST(REG_ITMP2, iptr->sx.val.l);
1721                         M_CMP(s1, REG_ITMP2);
1722                         emit_bne(cd, iptr->dst.block);
1723                         break;
1724                 case ICMD_IF_LGE:       /* ..., value ==> ... */
1725                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1726                         LCONST(REG_ITMP2, iptr->sx.val.l);
1727                         M_CMP(s1, REG_ITMP2);
1728                         emit_bge(cd, iptr->dst.block);
1729                         break;
1730                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1731                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1732                         LCONST(REG_ITMP2, iptr->sx.val.l);
1733                         M_CMP(s1, REG_ITMP2);
1734                         emit_bgt(cd, iptr->dst.block);
1735                         break;
1736                 case ICMD_IF_ICMPEQ:    /* ..., value, value ==> ...                  */
1737                 case ICMD_IF_ACMPEQ:    /* op1 = target JavaVM pc                     */
1738                 case ICMD_IF_LCMPEQ:
1739
1740                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1741                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1742                         M_CMP(s1, s2);
1743                         emit_beq(cd, iptr->dst.block);
1744                         break;
1745
1746                 case ICMD_IF_ICMPNE:    /* ..., value, value ==> ...                  */
1747                 case ICMD_IF_ACMPNE:    /* op1 = target JavaVM pc                     */
1748                 case ICMD_IF_LCMPNE:
1749
1750                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1751                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1752                         M_CMP(s1, s2);
1753                         emit_bne(cd, iptr->dst.block);
1754                         break;
1755
1756
1757                 case ICMD_IF_ICMPLT:    /* ..., value, value ==> ...                  */
1758                 case ICMD_IF_LCMPLT:
1759
1760                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1761                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1762                         M_CMP(s1, s2);
1763                         emit_blt(cd, iptr->dst.block);
1764                         break;
1765
1766                 case ICMD_IF_ICMPGT:    /* ..., value, value ==> ...                  */
1767                 case ICMD_IF_LCMPGT:
1768
1769                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1770                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1771                         M_CMP(s1, s2);
1772                         emit_bgt(cd, iptr->dst.block);
1773                         break;
1774
1775                 case ICMD_IF_ICMPLE:    /* ..., value, value ==> ...                  */
1776                 case ICMD_IF_LCMPLE:
1777
1778                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1779                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1780                         M_CMP(s1, s2);
1781                         emit_ble(cd, iptr->dst.block);
1782                         break;
1783
1784                 case ICMD_IF_ICMPGE:    /* ..., value, value ==> ...                  */
1785                 case ICMD_IF_LCMPGE:
1786
1787                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1788                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1789                         M_CMP(s1, s2);
1790                         emit_bge(cd, iptr->dst.block);
1791                         break;
1792
1793
1794                 case ICMD_LRETURN:      /* ..., retvalue ==> ...                      */
1795                 case ICMD_IRETURN:      /* ..., retvalue ==> ...                      */
1796
1797                         REPLACEMENT_POINT_RETURN(cd, iptr);
1798                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1799                         M_LNGMOVE(s1, REG_RESULT);
1800                         goto nowperformreturn;
1801
1802                 case ICMD_ARETURN:      /* ..., retvalue ==> ...                      */
1803
1804                         REPLACEMENT_POINT_RETURN(cd, iptr);
1805                         s1 = emit_load_s1(jd, iptr, REG_RESULT);
1806                         M_LNGMOVE(s1, REG_RESULT);
1807
1808 #ifdef ENABLE_VERIFIER
1809                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1810                                 patcher_add_patch_ref(jd, PATCHER_resolve_class,
1811                                                                         iptr->sx.s23.s2.uc, 0);
1812                         }
1813 #endif /* ENABLE_VERIFIER */
1814
1815                         goto nowperformreturn;
1816
1817                 case ICMD_FRETURN:      /* ..., retvalue ==> ...                      */
1818                 case ICMD_DRETURN:
1819
1820                         REPLACEMENT_POINT_RETURN(cd, iptr);
1821                         s1 = emit_load_s1(jd, iptr, REG_FRESULT);
1822                         M_FLTMOVE(s1, REG_FRESULT);
1823                         goto nowperformreturn;
1824
1825                 case ICMD_RETURN:      /* ...  ==> ...                                */
1826
1827                         REPLACEMENT_POINT_RETURN(cd, iptr);
1828
1829 nowperformreturn:
1830                         {
1831                         s4 i, p;
1832
1833                         p = cd->stackframesize;
1834
1835                         /* call trace function */
1836
1837 #if !defined(NDEBUG)
1838                         if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
1839                                 emit_verbosecall_exit(jd);
1840 #endif
1841
1842 #if defined(ENABLE_THREADS)
1843                         if (checksync && code_is_synchronized(code)) {
1844                                 disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
1845                                 M_ALD(REG_ITMP3, REG_PV, disp);
1846                                 M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
1847                                 M_MTCTR(REG_ITMP3);
1848
1849                                 /* we need to save the proper return value */
1850
1851                                 switch (iptr->opc) {
1852                                 case ICMD_LRETURN:
1853                                 case ICMD_IRETURN:
1854                                 case ICMD_ARETURN:
1855                                         /* fall through */
1856                                         M_LST(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1857                                         break;
1858                                 case ICMD_FRETURN:
1859                                         M_FST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1860                                         break;
1861                                 case ICMD_DRETURN:
1862                                         M_DST(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1863                                         break;
1864                                 }
1865
1866                                 M_ALD(REG_A0, REG_SP, rd->memuse * 8);
1867                                 M_JSR;
1868
1869                                 /* and now restore the proper return value */
1870
1871                                 switch (iptr->opc) {
1872                                 case ICMD_LRETURN:
1873                                 case ICMD_IRETURN:
1874                                 case ICMD_ARETURN:
1875                                         /* fall through */
1876                                         M_LLD(REG_RESULT , REG_SP, rd->memuse * 8 + 8);
1877                                         break;
1878                                 case ICMD_FRETURN:
1879                                         M_FLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1880                                         break;
1881                                 case ICMD_DRETURN:
1882                                         M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8 + 8);
1883                                         break;
1884                                 }
1885                         }
1886 #endif
1887
1888                         /* restore return address                                         */
1889
1890                         if (!code_is_leafmethod(code)) {
1891                                 /* ATTENTION: Don't use REG_ZERO (r0) here, as M_ALD
1892                                    may have a displacement overflow. */
1893
1894                                 M_ALD(REG_ITMP1, REG_SP, p * 8 + LA_LR_OFFSET);
1895                                 M_MTLR(REG_ITMP1);
1896                         }
1897
1898                         /* restore saved registers                                        */
1899
1900                         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
1901                                 p--; M_LLD(rd->savintregs[i], REG_SP, p * 8);
1902                         }
1903                         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
1904                                 p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
1905                         }
1906
1907                         /* deallocate stack                                               */
1908
1909                         if (cd->stackframesize)
1910                                 M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
1911
1912                         M_RET;
1913                         ALIGNCODENOP;
1914                         }
1915                         break;
1916
1917
1918                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
1919                         {
1920                         s4 i, l;
1921                         branch_target_t *table;
1922
1923                         table = iptr->dst.table;
1924
1925                         l = iptr->sx.s23.s2.tablelow;
1926                         i = iptr->sx.s23.s3.tablehigh;
1927
1928                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1929                         if (l == 0) {
1930                                 M_INTMOVE(s1, REG_ITMP1);
1931                         } else if (l <= 32768) {
1932                                 M_LDA(REG_ITMP1, s1, -l);
1933                         } else {
1934                                 ICONST(REG_ITMP2, l);
1935                                 M_SUB(s1, REG_ITMP2, REG_ITMP1);
1936                         }
1937
1938                         /* number of targets */
1939                         i = i - l + 1;
1940
1941                         /* range check */
1942
1943                         M_CMPUI(REG_ITMP1, i - 1);
1944                         emit_bgt(cd, table[0].block);
1945
1946                         /* build jump table top down and use address of lowest entry */
1947
1948                         table += i;
1949
1950                         while (--i >= 0) {
1951                                 dseg_add_target(cd, table->block);
1952                                 --table;
1953                         }
1954
1955                         /* length of dataseg after last dseg_add_unique_target is used by load */
1956
1957                         M_SLL_IMM(REG_ITMP1, 3, REG_ITMP1);
1958                         M_IADD(REG_ITMP1, REG_PV, REG_ITMP2);
1959                         M_ALD(REG_ITMP2, REG_ITMP2, -(cd->dseglen));
1960                         M_MTCTR(REG_ITMP2);
1961                         M_RTS;
1962                         ALIGNCODENOP;
1963                         }
1964                         break;
1965
1966
1967                 case ICMD_LOOKUPSWITCH: /* ..., key ==> ...                           */
1968                         {
1969                         s4 i, val;
1970                         lookup_target_t *lookup;
1971
1972                         lookup = iptr->dst.lookup;
1973
1974                         i = iptr->sx.s23.s2.lookupcount;
1975
1976                         MCODECHECK((i<<3)+8);
1977                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1978                         while (--i >= 0) {
1979                                 val = lookup->value;
1980                                 if ((val >= -32768) && (val <= 32767)) {
1981                                         M_CMPI(s1, val);
1982
1983                                 } else {
1984                                         a = dseg_add_s4(cd, val);
1985                                         M_ILD(REG_ITMP2, REG_PV, a);
1986                                         M_CMP(s1, REG_ITMP2);
1987                                 }
1988                                 emit_beq(cd, lookup->target.block);
1989                                 ++lookup;
1990                         }
1991
1992                         emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
1993
1994                         ALIGNCODENOP;
1995                         break;
1996                         }
1997
1998
1999                 case ICMD_BUILTIN:      /* ..., [arg1, [arg2 ...]] ==> ...            */
2000
2001                         bte = iptr->sx.s23.s3.bte;
2002                         md = bte->md;
2003                         goto gen_method;
2004
2005                 case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ...            */
2006                 case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
2007                 case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer    */
2008                 case ICMD_INVOKEINTERFACE:
2009
2010                         REPLACEMENT_POINT_INVOKE(cd, iptr);
2011
2012                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2013                                 lm = NULL;
2014                                 um = iptr->sx.s23.s3.um;
2015                                 md = um->methodref->parseddesc.md;
2016                         }
2017                         else {
2018                                 lm = iptr->sx.s23.s3.fmiref->p.method;
2019                                 um = NULL;
2020                                 md = lm->parseddesc;
2021                         }
2022
2023 gen_method:
2024                         s3 = md->paramcount;
2025
2026                         MCODECHECK((s3 << 2) + 128);
2027
2028                         /* copy arguments to registers or stack location */
2029
2030                         for (s3 = s3 - 1; s3 >= 0; s3--) {
2031                                 var = VAR(iptr->sx.s23.s2.args[s3]);
2032                                 d   = md->params[s3].regoff;
2033
2034                                 if (var->flags & PREALLOC)
2035                                         continue;
2036
2037                                 if (IS_INT_LNG_TYPE(var->type)) {
2038                                         if (!md->params[s3].inmemory) {
2039                                                 s1 = emit_load(jd, iptr, var, d);
2040                                                 M_LNGMOVE(s1, d);
2041                                         }
2042                                         else {
2043                                                 s1 = emit_load(jd, iptr, var, REG_ITMP1);
2044                                                 M_LST(s1, REG_SP, d);
2045                                         }
2046                                 }
2047                                 else {
2048                                         if (!md->params[s3].inmemory) {
2049                                                 s1 = emit_load(jd, iptr, var, d);
2050                                                 M_FLTMOVE(s1, d);
2051                                         }
2052                                         else {
2053                                                 s1 = emit_load(jd, iptr, var, REG_FTMP1);
2054                                                 M_DST(s1, REG_SP, d);
2055                                         }
2056                                 }
2057                         }
2058
2059                         switch (iptr->opc) {
2060                         case ICMD_BUILTIN:
2061                                 if (bte->stub == NULL) {
2062                                         disp = dseg_add_functionptr(cd, bte->fp);
2063                                         M_ALD(REG_PV, REG_PV, disp);
2064                                         M_ALD(REG_PV, REG_PV, 0);       /* TOC */
2065                                 }
2066                                 else {
2067                                         disp = dseg_add_functionptr(cd, bte->stub);
2068                                         M_ALD(REG_PV, REG_PV, disp);
2069                                 }
2070
2071                                 /* generate the actual call */
2072                                 M_MTCTR(REG_PV);
2073                                 M_JSR;
2074                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2075                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2076                                 M_MFLR(REG_ITMP1);
2077                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2078                                 break;
2079
2080                         case ICMD_INVOKESPECIAL:
2081                                 emit_nullpointer_check(cd, iptr, REG_A0);
2082                                 /* fall through */
2083
2084                         case ICMD_INVOKESTATIC:
2085                                 if (lm == NULL) {
2086                                         disp = dseg_add_unique_address(cd, um);
2087
2088                                         patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
2089                                                                                 um, disp);
2090                                 } else {
2091                                         disp = dseg_add_address(cd, lm->stubroutine);
2092                                 }
2093                                 M_ALD(REG_PV, REG_PV, disp);
2094
2095                                 /* generate the actual call */
2096
2097                                 M_MTCTR(REG_PV);
2098                                 M_JSR;
2099                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2100                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2101                                 M_MFLR(REG_ITMP1);
2102                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2103                                 break;
2104
2105                         case ICMD_INVOKEVIRTUAL:
2106                                 if (lm == NULL) {
2107                                         patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
2108                                         s1 = 0;
2109                                 } else {
2110                                         s1 = OFFSET(vftbl_t, table[0]) +
2111                                                 sizeof(methodptr) * lm->vftblindex;
2112                                 }
2113
2114                                 /* implicit null-pointer check */
2115                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2116                                 M_ALD(REG_PV, REG_METHODPTR, s1);
2117
2118                                 /* generate the actual call */
2119
2120                                 M_MTCTR(REG_PV);
2121                                 M_JSR;
2122                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2123                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2124                                 M_MFLR(REG_ITMP1);
2125                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2126                                 break;
2127
2128                         case ICMD_INVOKEINTERFACE:
2129                                 if (lm == NULL) {
2130                                         patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
2131
2132                                         s1 = 0;
2133                                         s2 = 0;
2134
2135                                 } else {
2136                                         s1 = OFFSET(vftbl_t, interfacetable[0]) -
2137                                                 sizeof(methodptr*) * lm->clazz->index;
2138
2139                                         s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
2140                                 }
2141
2142                                 /* implicit null-pointer check */
2143                                 M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
2144                                 M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
2145                                 M_ALD(REG_PV, REG_METHODPTR, s2);
2146
2147                                 /* generate the actual call */
2148
2149                                 M_MTCTR(REG_PV);
2150                                 M_JSR;
2151                                 REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
2152                                 disp = (s4) (cd->mcodeptr - cd->mcodebase);
2153                                 M_MFLR(REG_ITMP1);
2154                                 M_LDA(REG_PV, REG_ITMP1, -disp);
2155
2156                                 break;
2157                         }
2158                         /* store return value */
2159
2160                         d = md->returntype.type;
2161
2162                         if (d != TYPE_VOID) {
2163                                 if (IS_INT_LNG_TYPE(d)) {
2164                                         s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2165                                         M_MOV(REG_RESULT, s1);
2166                                 }
2167                                 else {
2168                                         s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
2169                                         M_FLTMOVE(REG_FRESULT, s1);
2170                                 }
2171                                 emit_store_dst(jd, iptr, s1);
2172                         }
2173                         break;
2174
2175                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
2176                                       /* val.a: (classinfo*) superclass               */
2177
2178                         /*  superclass is an interface:
2179                          *
2180                          *  OK if ((sub == NULL) ||
2181                          *         (sub->vftbl->interfacetablelength > super->index) &&
2182                          *         (sub->vftbl->interfacetable[-super->index] != NULL));
2183                          *
2184                          *  superclass is a class:
2185                          *
2186                          *  OK if ((sub == NULL) || (0
2187                          *         <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2188                          *         super->vftbl->diffvall));
2189                          */
2190
2191                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
2192                                 /* object type cast-check */
2193
2194                                 classinfo *super;
2195                                 s4         superindex;
2196
2197                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2198                                         super      = NULL;
2199                                         superindex = 0;
2200                                 }
2201                                 else {
2202                                         super      = iptr->sx.s23.s3.c.cls;
2203                                         superindex = super->index;
2204                                 }
2205
2206                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2207
2208                                 /* if class is not resolved, check which code to call */
2209
2210                                 if (super == NULL) {
2211                                         M_TST(s1);
2212                                         emit_label_beq(cd, BRANCH_LABEL_1);
2213                                         disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2214
2215                                         patcher_add_patch_ref(jd,
2216                                                                                 PATCHER_resolve_classref_to_flags,
2217                                                                                 iptr->sx.s23.s3.c.ref,
2218                                                                                 disp);
2219
2220                                         M_ILD(REG_ITMP2, REG_PV, disp);
2221                                         M_AND_IMM(REG_ITMP2, ACC_INTERFACE, REG_ITMP2);
2222
2223                                         emit_label_beq(cd, BRANCH_LABEL_2);
2224                                 }
2225
2226                                 /* interface checkcast code */
2227
2228                                 if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2229                                         if (super == NULL) {
2230                                                 patcher_add_patch_ref(jd,
2231                                                                                         PATCHER_checkcast_interface,
2232                                                                                         iptr->sx.s23.s3.c.ref,
2233                                                                                         0);
2234                                         } else {
2235                                                 M_TST(s1);
2236                                                 emit_label_beq(cd, BRANCH_LABEL_3);
2237                                         }
2238
2239                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2240                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
2241                                         M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2242                                         emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
2243                                         M_ALD(REG_ITMP3, REG_ITMP2,
2244                                                   OFFSET(vftbl_t, interfacetable[0]) -
2245                                                   superindex * sizeof(methodptr*));
2246                                         M_TST(REG_ITMP3);
2247                                         emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
2248
2249                                         if (super == NULL)      {
2250                                                 emit_label_br(cd, BRANCH_LABEL_4);
2251                                         } else  {
2252                                                 emit_label(cd, BRANCH_LABEL_3);
2253                                         }
2254                                 }
2255
2256                                 /* class checkcast code */
2257
2258                                 if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2259                                         if (super == NULL) {
2260                                                 emit_label(cd, BRANCH_LABEL_2);
2261
2262                                                 disp = dseg_add_unique_address(cd, NULL);
2263                                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2264                                                                                         iptr->sx.s23.s3.c.ref,
2265                                                                                         disp);
2266                                         } else {
2267                                                 disp = dseg_add_address(cd, super->vftbl);
2268                                                 M_TST(s1);
2269                                                 emit_label_beq(cd, BRANCH_LABEL_5);
2270                                         }
2271
2272                                         M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2273
2274                                         M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2275                                         M_ALD(REG_ITMP2, REG_PV, disp);
2276                                         if (s1 != REG_ITMP1) {
2277                                                 M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, baseval));
2278                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2279
2280                                                 M_SUB(REG_ITMP3, REG_ITMP1, REG_ITMP3);
2281                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2282                                         } else {
2283                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
2284                                                 M_SUB(REG_ITMP3, REG_ITMP2, REG_ITMP3);
2285                                                 M_EXTSW(REG_ITMP3, REG_ITMP3);
2286                                                 M_ALD(REG_ITMP2, REG_PV, disp);
2287                                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2288                                         }
2289                                         M_CMPU(REG_ITMP3, REG_ITMP2);
2290                                         emit_classcast_check(cd, iptr, BRANCH_GT, REG_ITMP3, s1);
2291
2292                                         if (super != NULL)
2293                                                 emit_label(cd, BRANCH_LABEL_5);
2294                                 }
2295
2296                                 if (super == NULL) {
2297                                         emit_label(cd, BRANCH_LABEL_1);
2298                                         emit_label(cd, BRANCH_LABEL_4);
2299                                 }
2300                                 d = codegen_reg_of_dst(jd, iptr, s1);
2301
2302                         } else {
2303                                 /* array type cast-check */
2304
2305                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2306                                 M_INTMOVE(s1, REG_A0);
2307
2308
2309                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2310                                         disp = dseg_add_unique_address(cd, NULL);
2311                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2312                                                                                 iptr->sx.s23.s3.c.ref,
2313                                                                                 disp);
2314                                 } else {
2315                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2316                                 }
2317
2318                                 M_ALD(REG_A1, REG_PV, disp);
2319                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2320                                 M_ALD(REG_ITMP2, REG_PV, disp);
2321                                 M_ALD(REG_ITMP2, REG_ITMP2, 0); /* TOC */
2322                                 M_MTCTR(REG_ITMP2);
2323                                 M_JSR;
2324                                 M_TST(REG_RESULT);
2325                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2326
2327                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2328                                 d = codegen_reg_of_dst(jd, iptr, s1);
2329                         }
2330                         M_INTMOVE(s1, d);
2331                         emit_store_dst(jd, iptr, d);
2332                         break;
2333
2334
2335                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2336                                       /* val.a: (classinfo*) superclass               */
2337
2338                         /*  superclass is an interface:
2339                          *
2340                          *  return (sub != NULL) &&
2341                          *         (sub->vftbl->interfacetablelength > super->index) &&
2342                          *         (sub->vftbl->interfacetable[-super->index] != NULL);
2343                          *
2344                          *  superclass is a class:
2345                          *
2346                          *  return ((sub != NULL) && (0
2347                          *          <= (sub->vftbl->baseval - super->vftbl->baseval) <=
2348                          *          super->vftbl->diffvall));
2349                          */
2350
2351                         {
2352                         classinfo *super;
2353                         s4         superindex;
2354
2355                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2356                                 super      = NULL;
2357                                 superindex = 0;
2358                         }
2359                         else {
2360                                 super      = iptr->sx.s23.s3.c.cls;
2361                                 superindex = super->index;
2362                         }
2363
2364                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2365                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2366                         if (s1 == d) {
2367                                 M_MOV(s1, REG_ITMP1);
2368                                 s1 = REG_ITMP1;
2369                         }
2370
2371                         M_CLR(d);
2372
2373                         /* if class is not resolved, check which code to call */
2374
2375                         if (super == NULL) {
2376                                 M_TST(s1);
2377                                 emit_label_beq(cd, BRANCH_LABEL_1);
2378                                 disp = dseg_add_unique_s4(cd, 0);                     /* super->flags */
2379
2380                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
2381                                                                         iptr->sx.s23.s3.c.ref, disp);
2382
2383                                 M_ILD(REG_ITMP3, REG_PV, disp);
2384                                 M_AND_IMM(REG_ITMP3, ACC_INTERFACE, REG_ITMP3);
2385                                 emit_label_beq(cd, BRANCH_LABEL_2);
2386                         }
2387
2388                         /* interface instanceof code */
2389
2390                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2391                                 if (super == NULL) {
2392                                         patcher_add_patch_ref(jd,
2393                                                                                 PATCHER_instanceof_interface,
2394                                                                                 iptr->sx.s23.s3.c.ref, 0);
2395
2396                                 } else {
2397                                         M_TST(s1);
2398                                         emit_label_beq(cd, BRANCH_LABEL_3);
2399                                 }
2400
2401                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2402                                 M_ILD(REG_ITMP3, REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2403                                 M_LDATST(REG_ITMP3, REG_ITMP3, -superindex);
2404                                 M_BLE(4);
2405                                 M_ALD(REG_ITMP1, REG_ITMP1,
2406                                           OFFSET(vftbl_t, interfacetable[0]) -
2407                                           superindex * sizeof(methodptr*));
2408                                 M_TST(REG_ITMP1);
2409                                 M_BEQ(1);
2410                                 M_IADD_IMM(REG_ZERO, 1, d);
2411
2412                                 if (super == NULL)      {
2413                                         emit_label_br(cd, BRANCH_LABEL_4);
2414                                 } else  {
2415                                         emit_label(cd, BRANCH_LABEL_3);
2416                                 }
2417                         }
2418
2419                         /* class instanceof code */
2420
2421                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2422
2423                                 if (super == NULL) {
2424                                         emit_label(cd, BRANCH_LABEL_2);
2425
2426                                         disp = dseg_add_unique_address(cd, NULL);
2427                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2428                                                                                 iptr->sx.s23.s3.c.ref,
2429                                                                                 disp);
2430
2431                                 } else {
2432                                         disp = dseg_add_address(cd, super->vftbl);
2433                                         M_TST(s1);
2434                                         emit_label_beq(cd, BRANCH_LABEL_5);
2435                                 }
2436
2437                                 M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2438                                 M_ALD(REG_ITMP2, REG_PV, disp);
2439
2440                                 M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
2441                                 M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
2442                                 M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
2443
2444                                 M_SUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
2445                                 M_EXTSW(REG_ITMP1, REG_ITMP1);
2446                                 M_CMPU(REG_ITMP1, REG_ITMP2);
2447                                 M_CLR(d);
2448                                 M_BGT(1);
2449                                 M_IADD_IMM(REG_ZERO, 1, d);
2450
2451                                 if (super != NULL)
2452                                         emit_label(cd, BRANCH_LABEL_5);
2453                         }
2454
2455                         if (super == NULL) {
2456                                 emit_label(cd, BRANCH_LABEL_1);
2457                                 emit_label(cd, BRANCH_LABEL_4);
2458                         }
2459
2460                         emit_store_dst(jd, iptr, d);
2461                         }
2462                         break;
2463
2464                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2465
2466                         /* check for negative sizes and copy sizes to stack if necessary  */
2467
2468                         MCODECHECK((iptr->s1.argcount << 2) + 128);
2469
2470                         for (s1 = iptr->s1.argcount; --s1 >= 0; ) {
2471
2472                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2473
2474                                 /* copy SAVEDVAR sizes to stack */
2475
2476                                 if (!(var->flags & PREALLOC)) {
2477                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2478 #if defined(__DARWIN__)
2479                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + INT_ARG_CNT) * 8);
2480 #else
2481                                         M_LST(s2, REG_SP, LA_SIZE + (s1 + 3) * 8);
2482 #endif
2483                                 }
2484                         }
2485
2486                         /* a0 = dimension count */
2487
2488                         ICONST(REG_A0, iptr->s1.argcount);
2489
2490                         /* is patcher function set? */
2491
2492                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2493                                 disp = dseg_add_unique_address(cd, NULL);
2494
2495                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2496                                                                         iptr->sx.s23.s3.c.ref, disp);
2497                         } else {
2498                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2499                         }
2500
2501                         /* a1 = arraydescriptor */
2502
2503                         M_ALD(REG_A1, REG_PV, disp);
2504
2505                         /* a2 = pointer to dimensions = stack pointer */
2506
2507 #if defined(__DARWIN__)
2508                         M_LDA(REG_A2, REG_SP, LA_SIZE + INT_ARG_CNT * 8);
2509 #else
2510                         M_LDA(REG_A2, REG_SP, LA_SIZE + 3 * 8);
2511 #endif
2512
2513                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2514                         M_ALD(REG_ITMP3, REG_PV, disp);
2515                         M_ALD(REG_ITMP3, REG_ITMP3, 0); /* TOC */
2516                         M_MTCTR(REG_ITMP3);
2517                         M_JSR;
2518
2519                         /* check for exception before result assignment */
2520                         emit_exception_check(cd, iptr);
2521
2522                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2523                         M_INTMOVE(REG_RESULT, d);
2524                         emit_store_dst(jd, iptr, d);
2525                         break;
2526
2527                 default:
2528                         exceptions_throw_internalerror("Unknown ICMD %d during code generation",
2529                                                                                    iptr->opc);
2530                         return false;
2531         } /* switch */
2532
2533         } /* for instruction */
2534
2535         } /* if (bptr -> flags >= BBREACHED) */
2536         } /* for basic block */
2537
2538         /* generate traps */
2539
2540         emit_patcher_traps(jd);
2541
2542         /* everything's ok */
2543
2544         return true;
2545 }
2546
2547
2548 /* codegen_emit_stub_native ****************************************************
2549
2550    Emits a stub routine which calls a native method.
2551
2552 *******************************************************************************/
2553
2554 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f, int skipparams)
2555 {
2556         methodinfo  *m;
2557         codeinfo    *code;
2558         codegendata *cd;
2559         methoddesc  *md;
2560         s4           i, j;
2561         s4           t;
2562         int          s1, s2;
2563         int          disp;
2564
2565         /* get required compiler data */
2566
2567         m    = jd->m;
2568         code = jd->code;
2569         cd   = jd->cd;
2570
2571         /* Sanity check. */
2572
2573         assert(!code_is_leafmethod(code));
2574
2575         /* set some variables */
2576
2577         md = m->parseddesc;
2578
2579         /* calculate stackframe size */
2580
2581         cd->stackframesize =
2582                 sizeof(stackframeinfo_t) / SIZEOF_VOID_P +
2583                 sizeof(localref_table) / SIZEOF_VOID_P +
2584                 4 +                            /* 4 stackframeinfo arguments (darwin)*/
2585                 nmd->paramcount  +
2586                 nmd->memuse;
2587
2588 /*      cd->stackframesize = (cd->stackframesize + 3) & ~3;*/ /* keep stack 16-byte aligned */
2589
2590         /* create method header */
2591
2592         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
2593         (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize       */
2594         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
2595         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
2596         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
2597
2598         /* generate code */
2599
2600         M_MFLR(REG_ZERO);
2601         M_AST_INTERN(REG_ZERO, REG_SP, LA_LR_OFFSET);
2602         M_STDU(REG_SP, REG_SP, -(cd->stackframesize * 8));
2603
2604         /* save integer and float argument registers */
2605
2606         for (i = 0; i < md->paramcount; i++) {
2607                 if (!md->params[i].inmemory) {
2608                         s1 = md->params[i].regoff;
2609
2610                         switch (md->paramtypes[i].type) {
2611                         case TYPE_INT:
2612                         case TYPE_LNG:
2613                         case TYPE_ADR:
2614                                 M_LST(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2615                                 break;
2616                         case TYPE_FLT:
2617                         case TYPE_DBL:
2618                                 M_DST(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2619                                 break;
2620                         }
2621                 }
2622         }
2623
2624         /* create native stack info */
2625
2626         M_MOV(REG_SP, REG_A0);
2627         M_MOV(REG_PV, REG_A1);
2628         disp = dseg_add_functionptr(cd, codegen_start_native_call);
2629         M_ALD(REG_ITMP1, REG_PV, disp);
2630         M_ALD(REG_ITMP1, REG_ITMP1, 0);         /* TOC */
2631         M_MTCTR(REG_ITMP1);
2632         M_JSR;
2633
2634         /* remember class argument */
2635
2636         if (m->flags & ACC_STATIC)
2637                 M_MOV(REG_RESULT, REG_ITMP3);
2638
2639         /* restore integer and float argument registers */
2640
2641         for (i = 0; i < md->paramcount; i++) {
2642                 if (!md->params[i].inmemory) {
2643                         s1 = md->params[i].regoff;
2644
2645                         switch (md->paramtypes[i].type) {
2646                         case TYPE_INT:
2647                         case TYPE_LNG:
2648                         case TYPE_ADR:
2649                                 M_LLD(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2650                                 break;
2651                         case TYPE_FLT:
2652                         case TYPE_DBL:
2653                                 M_DLD(s1, REG_SP, LA_SIZE + PA_SIZE + 4 * 8 + i * 8);
2654                                 break;
2655                         }
2656                 }
2657         }
2658
2659         /* copy or spill arguments to new locations */
2660
2661         for (i = md->paramcount - 1, j = i + skipparams; i >= 0; i--, j--) {
2662                 t = md->paramtypes[i].type;
2663
2664                 if (IS_INT_LNG_TYPE(t)) {
2665                         if (!md->params[i].inmemory) {
2666                                 s1 = md->params[i].regoff;
2667                                 s2 = nmd->params[j].regoff;
2668
2669                                 if (!nmd->params[j].inmemory)
2670                                         M_INTMOVE(s1, s2);
2671                                 else
2672                                         M_LST(s1, REG_SP, s2);
2673                         }
2674                         else {
2675                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
2676                                 s2 = nmd->params[j].regoff;
2677
2678                                 M_LLD(REG_ITMP1, REG_SP, s1);
2679                                 M_LST(REG_ITMP1, REG_SP, s2);
2680                         }
2681                 }
2682                 else {
2683                         /* We only copy spilled float arguments, as the float
2684                            argument registers keep unchanged. */
2685
2686                         if (md->params[i].inmemory) {
2687                                 s1 = md->params[i].regoff + cd->stackframesize * 8;
2688                                 s2 = nmd->params[j].regoff;
2689
2690                                 M_DLD(REG_FTMP1, REG_SP, s1);
2691
2692                                 if (IS_2_WORD_TYPE(t))
2693                                         M_DST(REG_FTMP1, REG_SP, s2);
2694                                 else
2695                                         M_FST(REG_FTMP1, REG_SP, s2 + 4);
2696                         }
2697                 }
2698         }
2699
2700         /* Handle native Java methods. */
2701
2702         if (m->flags & ACC_NATIVE) {
2703                 /* put class into second argument register */
2704
2705                 if (m->flags & ACC_STATIC)
2706                         M_MOV(REG_ITMP3, REG_A1);
2707
2708                 /* put env into first argument register */
2709
2710                 disp = dseg_add_unique_address(cd, VM_get_jnienv());
2711                 M_ALD(REG_A0, REG_PV, disp);
2712         }
2713
2714         /* Call the native function. */
2715         /* native functions have a different TOC for sure */
2716
2717         M_AST(REG_TOC, REG_SP, 40);     /* save old TOC */
2718         disp = dseg_add_functionptr(cd, f);
2719         M_ALD(REG_ITMP3, REG_PV, disp);
2720         M_ALD(REG_TOC, REG_ITMP3, 8);   /* load TOC from func. descriptor */
2721         M_ALD(REG_ITMP3, REG_ITMP3, 0);
2722         M_MTCTR(REG_ITMP3);
2723         M_JSR;
2724         M_ALD(REG_TOC, REG_SP, 40);     /* restore TOC */
2725
2726         /* save return value */
2727
2728         if (md->returntype.type != TYPE_VOID) {
2729                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
2730                         M_LST(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2731                 }
2732                 else {
2733                         M_DST(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2734                 }
2735         }
2736
2737         /* remove native stackframe info */
2738
2739         M_MOV(REG_SP, REG_A0);
2740         M_MOV(REG_PV, REG_A1);
2741         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
2742         M_ALD(REG_ITMP1, REG_PV, disp);
2743         M_ALD(REG_ITMP1, REG_ITMP1, 0); /* XXX what about TOC? */
2744         M_MTCTR(REG_ITMP1);
2745         M_JSR;
2746         M_MOV(REG_RESULT, REG_ITMP1_XPTR);
2747
2748         /* restore return value */
2749
2750         if (md->returntype.type != TYPE_VOID) {
2751                 if (IS_INT_LNG_TYPE(md->returntype.type)) {
2752                         M_LLD(REG_RESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2753                 }
2754                 else {
2755                         M_DLD(REG_FRESULT, REG_SP, LA_SIZE + PA_SIZE + 2 * 8);
2756                 }
2757         }
2758
2759         M_ALD(REG_ITMP2_XPC, REG_SP, cd->stackframesize * 8 + LA_LR_OFFSET);
2760         M_MTLR(REG_ITMP2_XPC);
2761         M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* remove stackframe           */
2762
2763         /* check for exception */
2764
2765         M_TST(REG_ITMP1_XPTR);
2766         M_BNE(1);                           /* if no exception then return        */
2767
2768         M_RET;
2769
2770         /* handle exception */
2771
2772         M_LADD_IMM(REG_ITMP2_XPC, -4, REG_ITMP2_XPC);  /* exception address       */
2773
2774         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
2775         M_ALD(REG_ITMP3, REG_PV, disp);
2776         M_MTCTR(REG_ITMP3);
2777         M_RTS;
2778 }
2779
2780
2781 /*
2782  * These are local overrides for various environment variables in Emacs.
2783  * Please do not remove this and leave it at the end of the file, where
2784  * Emacs will automagically detect them.
2785  * ---------------------------------------------------------------------
2786  * Local variables:
2787  * mode: c
2788  * indent-tabs-mode: t
2789  * c-basic-offset: 4
2790  * tab-width: 4
2791  * End:
2792  * vim:noexpandtab:sw=4:ts=4:
2793  */