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