src/vm/jit/arm/codegen.c

   1 /* src/vm/jit/arm/codegen.c - machine code generator for Arm
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008, 2009
   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 <stdio.h>
  30
  31 #include "vm/types.h"
  32
  33 #include "md-abi.h"
  34
  35 #include "vm/jit/arm/arch.h"
  36 #include "vm/jit/arm/codegen.h"
  37
  38 #include "mm/memory.hpp"
  39
  40 #include "native/localref.hpp"
  41 #include "native/native.hpp"
  42
  43 #include "threads/lock.hpp"
  44
  45 #include "vm/jit/builtin.hpp"
  46 #include "vm/exceptions.hpp"
  47 #include "vm/global.h"
  48 #include "vm/loader.hpp"
  49 #include "vm/options.h"
  50 #include "vm/vm.hpp"
  51
  52 #include "vm/jit/abi.h"
  53 #include "vm/jit/asmpart.h"
  54 #include "vm/jit/codegen-common.hpp"
  55 #include "vm/jit/dseg.h"
  56 #include "vm/jit/emit-common.hpp"
  57 #include "vm/jit/jit.hpp"
  58 #include "vm/jit/linenumbertable.hpp"
  59 #include "vm/jit/methodheader.h"
  60 #include "vm/jit/parse.hpp"
  61 #include "vm/jit/patcher-common.hpp"
  62 #include "vm/jit/reg.h"
  63
  64
  65 /**
  66  * Generates machine code for the method prolog.
  67  */
  68 void codegen_emit_prolog(jitdata* jd)
  69 {
  70         varinfo*    var;
  71         methoddesc* md;
  72         int32_t     s1;
  73         int32_t     t, len;
  74         int32_t     varindex;
  75         int         i;
  76
  77         // Get required compiler data.
  78         methodinfo*   m    = jd->m;
  79         codeinfo*     code = jd->code;
  80         codegendata*  cd   = jd->cd;
  81         registerdata* rd   = jd->rd;
  82
  83         int32_t savedregs_num = 0;
  84         uint32_t savedregs_bitmask = 0;
  85
  86         if (!code_is_leafmethod(code)) {
  87                 savedregs_num++;
  88                 savedregs_bitmask = (1<<REG_LR);
  89         }
  90
  91         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
  92                 savedregs_num++;
  93                 savedregs_bitmask |= (1<<(rd->savintregs[i]));
  94         }
  95
  96 #if !defined(NDEBUG)
  97         for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
  98                 vm_abort("codegen_emit_prolog: Floating-point callee saved registers are not saved to stack");
  99         }
 100 #endif
 101
 102         /* save return address and used callee saved registers */
 103
 104         if (savedregs_bitmask != 0)
 105                 M_STMFD(savedregs_bitmask, REG_SP);
 106
 107         /* create additional stack frame for spilled variables (if necessary) */
 108
 109         int32_t additional_bytes = (cd->stackframesize * 8 - savedregs_num * 4);
 110
 111         if (additional_bytes > 0)
 112                 M_SUB_IMM_EXT_MUL4(REG_SP, REG_SP, additional_bytes / 4);
 113
 114         /* take arguments out of register or stack frame */
 115
 116         md = m->parseddesc;
 117         for (i = 0, len = 0; i < md->paramcount; i++) {
 118                 s1 = md->params[i].regoff;
 119                 t = md->paramtypes[i].type;
 120
 121                 varindex = jd->local_map[len * 5 + t];
 122
 123                 len += (IS_2_WORD_TYPE(t)) ? 2 : 1;          /* 2 word type arguments */
 124
 125                 if (varindex == UNUSED)
 126                         continue;
 127
 128                 var = VAR(varindex);
 129
 130                 /* ATTENTION: we use interger registers for all arguments (even float) */
 131 #if !defined(ENABLE_SOFTFLOAT)
 132                 if (IS_INT_LNG_TYPE(t)) {
 133 #endif
 134                         if (!md->params[i].inmemory) {
 135                                 if (!(var->flags & INMEMORY)) {
 136                                         if (IS_2_WORD_TYPE(t))
 137                                                 M_LNGMOVE(s1, var->vv.regoff);
 138                                         else
 139                                                 M_INTMOVE(s1, var->vv.regoff);
 140                                 }
 141                                 else {
 142                                         if (IS_2_WORD_TYPE(t))
 143                                                 M_LST(s1, REG_SP, var->vv.regoff);
 144                                         else
 145                                                 M_IST(s1, REG_SP, var->vv.regoff);
 146                                 }
 147                         }
 148                         else {                                   /* stack arguments       */
 149                                 if (!(var->flags & INMEMORY)) {      /* stack arg -> register */
 150                                         if (IS_2_WORD_TYPE(t))
 151                                                 M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 152                                         else
 153                                                 M_ILD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 154                                 }
 155                                 else {                               /* stack arg -> spilled  */
 156                                         /* Reuse Memory Position on Caller Stack */
 157                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 158                                 }
 159                         }
 160 #if !defined(ENABLE_SOFTFLOAT)
 161                 }
 162                 else {
 163                         if (!md->params[i].inmemory) {
 164                                 if (!(var->flags & INMEMORY)) {
 165                                         if (IS_2_WORD_TYPE(t))
 166                                                 M_CAST_L2D(s1, var->vv.regoff);
 167                                         else
 168                                                 M_CAST_I2F(s1, var->vv.regoff);
 169                                 }
 170                                 else {
 171                                         if (IS_2_WORD_TYPE(t))
 172                                                 M_LST(s1, REG_SP, var->vv.regoff);
 173                                         else
 174                                                 M_IST(s1, REG_SP, var->vv.regoff);
 175                                 }
 176                         }
 177                         else {
 178                                 if (!(var->flags & INMEMORY)) {
 179                                         if (IS_2_WORD_TYPE(t))
 180                                                 M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 181                                         else
 182                                                 M_FLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
 183                                 }
 184                                 else {
 185                                         /* Reuse Memory Position on Caller Stack */
 186                                         var->vv.regoff = cd->stackframesize * 8 + s1;
 187                                 }
 188                         }
 189                 }
 190 #endif /* !defined(ENABLE_SOFTFLOAT) */
 191         }
 192 }
 193
 194
 195 /**
 196  * Generates machine code for the method epilog.
 197  */
 198 void codegen_emit_epilog(jitdata* jd)
 199 {
 200         int i;
 201
 202         // Get required compiler data.
 203         codeinfo*     code = jd->code;
 204         codegendata*  cd   = jd->cd;
 205         registerdata* rd   = jd->rd;
 206
 207         int32_t savedregs_num = 0;
 208         uint32_t savedregs_bitmask = 0;
 209
 210         if (!code_is_leafmethod(code)) {
 211                 savedregs_num++;
 212                 savedregs_bitmask = (1<<REG_LR);
 213         }
 214
 215         for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
 216                 savedregs_num++;
 217                 savedregs_bitmask |= (1<<(rd->savintregs[i]));
 218         }
 219
 220         /* deallocate stackframe for spilled variables */
 221
 222         int32_t additional_bytes = (cd->stackframesize * 8 - savedregs_num * 4);
 223
 224         if (additional_bytes > 0)
 225                 M_ADD_IMM_EXT_MUL4(REG_SP, REG_SP, additional_bytes / 4);
 226
 227         /* restore callee saved registers + do return */
 228
 229         if (savedregs_bitmask) {
 230                 if (!code_is_leafmethod(code)) {
 231                         savedregs_bitmask &= ~(1<<REG_LR);
 232                         savedregs_bitmask |= (1<<REG_PC);
 233                 }
 234                 M_LDMFD(savedregs_bitmask, REG_SP);
 235         }
 236
 237         /* if LR was not on stack, we need to return manually */
 238
 239         if (code_is_leafmethod(code))
 240                 M_MOV(REG_PC, REG_LR);
 241 }
 242
 243
 244 /**
 245  * Generates machine code for one ICMD.
 246  */
 247 void codegen_emit_instruction(jitdata* jd, instruction* iptr)
 248 {
 249         varinfo*            var;
 250         builtintable_entry* bte;
 251         methodinfo*         lm;             // Local methodinfo for ICMD_INVOKE*.
 252         unresolved_method*  um;
 253         fieldinfo*          fi;
 254         unresolved_field*   uf;
 255         int32_t             fieldtype;
 256         int32_t             s1, s2, s3, d;
 257         int32_t             disp;
 258
 259         // Get required compiler data.
 260         codeinfo*     code = jd->code;
 261         codegendata*  cd   = jd->cd;
 262
 263         /* the big switch */
 264         switch (iptr->opc) {
 265
 266                 /* constant operations ************************************************/
 267
 268                 case ICMD_ACONST:     /* ... ==> ..., constant                        */
 269
 270                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 271                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
 272                                 disp = dseg_add_unique_address(cd, NULL);
 273
 274                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
 275                                                     iptr->sx.val.c.ref, disp);
 276
 277                                 M_DSEG_LOAD(d, disp);
 278                         }
 279                         else {
 280                                 ICONST(d, (u4) iptr->sx.val.anyptr);
 281                         }
 282                         emit_store_dst(jd, iptr, d);
 283                         break;
 284
 285                 case ICMD_FCONST:     /* ...  ==> ..., constant                       */
 286
 287 #if defined(ENABLE_SOFTFLOAT)
 288                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 289                         ICONST(d, iptr->sx.val.i);
 290                         emit_store_dst(jd, iptr, d);
 291 #else
 292                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 293                         FCONST(d, iptr->sx.val.f);
 294                         emit_store_dst(jd, iptr, d);
 295 #endif
 296                         break;
 297
 298                 case ICMD_DCONST:     /* ...  ==> ..., constant                       */
 299
 300 #if defined(ENABLE_SOFTFLOAT)
 301                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 302                         LCONST(d, iptr->sx.val.l);
 303                         emit_store_dst(jd, iptr, d);
 304 #else
 305                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 306                         DCONST(d, iptr->sx.val.d);
 307                         emit_store_dst(jd, iptr, d);
 308 #endif
 309                         break;
 310
 311
 312                 /* integer operations *************************************************/
 313
 314                 case ICMD_INT2BYTE:   /* ..., value  ==> ..., value                   */
 315
 316                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 317                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 318                         M_MOV(d, REG_LSL(s1, 24));
 319                         M_MOV(d, REG_ASR(d, 24));
 320                         emit_store_dst(jd, iptr, d);
 321                         break;
 322
 323                 case ICMD_INT2CHAR:   /* ..., value  ==> ..., value                   */
 324
 325                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 326                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 327                         M_MOV(d, REG_LSL(s1, 16));
 328                         M_MOV(d, REG_LSR(d, 16)); /* ATTENTION: char is unsigned */
 329                         emit_store_dst(jd, iptr, d);
 330                         break;
 331
 332                 case ICMD_INT2SHORT:  /* ..., value  ==> ..., value                   */
 333
 334                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 335                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 336                         M_MOV(d, REG_LSL(s1, 16));
 337                         M_MOV(d, REG_ASR(d, 16));
 338                         emit_store_dst(jd, iptr, d);
 339                         break;
 340
 341                 case ICMD_I2L:        /* ..., value  ==> ..., value                   */
 342
 343                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 344                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 345                         M_INTMOVE(s1, GET_LOW_REG(d));
 346                         M_MOV(GET_HIGH_REG(d), REG_ASR(s1, 31));
 347                         emit_store_dst(jd, iptr, d);
 348                         break;
 349
 350                 case ICMD_L2I:        /* ..., value  ==> ..., value                   */
 351
 352                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 353                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 354                         M_INTMOVE(s1, d);
 355                         emit_store_dst(jd, iptr, d);
 356                         break;
 357
 358                 case ICMD_INEG:       /* ..., value  ==> ..., - value                 */
 359
 360                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 361                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 362                         M_RSB_IMM(d, s1, 0);
 363                         emit_store_dst(jd, iptr, d);
 364                         break;
 365
 366                 case ICMD_LNEG:       /* ..., value  ==> ..., - value                 */
 367
 368                         s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
 369                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 370                         M_RSB_IMMS(GET_LOW_REG(d), GET_LOW_REG(s1), 0);
 371                         M_RSC_IMM(GET_HIGH_REG(d), GET_HIGH_REG(s1), 0);
 372                         emit_store_dst(jd, iptr, d);
 373                         break;
 374
 375                 case ICMD_IADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 376
 377                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 378                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 379                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 380                         M_ADD(d, s1, s2);
 381                         emit_store_dst(jd, iptr, d);
 382                         break;
 383
 384                 case ICMD_LADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 385
 386                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
 387                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP1);
 388                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 389                         M_ADD_S(GET_LOW_REG(d), s1, s2);
 390                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
 391                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
 392                         M_ADC(GET_HIGH_REG(d), s1, s2);
 393                         emit_store_dst(jd, iptr, d);
 394                         break;
 395
 396                 case ICMD_IADDCONST:
 397                 case ICMD_IINC:
 398
 399                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 400                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 401
 402                         if (IS_IMM(iptr->sx.val.i)) {
 403                                 M_ADD_IMM(d, s1, iptr->sx.val.i);
 404                         } else if (IS_IMM(-iptr->sx.val.i)) {
 405                                 M_SUB_IMM(d, s1, (-iptr->sx.val.i));
 406                         } else {
 407                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 408                                 M_ADD(d, s1, REG_ITMP3);
 409                         }
 410
 411                         emit_store_dst(jd, iptr, d);
 412                         break;
 413
 414                 case ICMD_LADDCONST:  /* ..., value  ==> ..., value + constant        */
 415                                       /* sx.val.l = constant                          */
 416
 417                         s3 = iptr->sx.val.l & 0xffffffff;
 418                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 419                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 420                         if (IS_IMM(s3))
 421                                 M_ADD_IMMS(GET_LOW_REG(d), s1, s3);
 422                         else {
 423                                 ICONST(REG_ITMP3, s3);
 424                                 M_ADD_S(GET_LOW_REG(d), s1, REG_ITMP3);
 425                         }
 426                         s3 = iptr->sx.val.l >> 32;
 427                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
 428                         if (IS_IMM(s3))
 429                                 M_ADC_IMM(GET_HIGH_REG(d), s1, s3);
 430                         else {
 431                                 ICONST(REG_ITMP3, s3);
 432                                 M_ADC(GET_HIGH_REG(d), s1, REG_ITMP3);
 433                         }
 434                         emit_store_dst(jd, iptr, d);
 435                         break;
 436
 437                 case ICMD_ISUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 438
 439                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 440                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 441                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 442                         M_SUB(d, s1, s2);
 443                         emit_store_dst(jd, iptr, d);
 444                         break;
 445
 446                 case ICMD_LSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 447
 448                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
 449                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP1);
 450                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 451                         M_SUB_S(GET_LOW_REG(d), s1, s2);
 452                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
 453                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
 454                         M_SBC(GET_HIGH_REG(d), s1, s2);
 455                         emit_store_dst(jd, iptr, d);
 456                         break;
 457
 458                 case ICMD_ISUBCONST:  /* ..., value  ==> ..., value + constant        */
 459                                       /* sx.val.i = constant                          */
 460
 461                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 462                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 463                         if (IS_IMM(iptr->sx.val.i))
 464                                 M_SUB_IMM(d, s1, iptr->sx.val.i);
 465                         else {
 466                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 467                                 M_SUB(d, s1, REG_ITMP3);
 468                         }
 469                         emit_store_dst(jd, iptr, d);
 470                         break;
 471
 472                 case ICMD_LSUBCONST:  /* ..., value  ==> ..., value - constant        */
 473                                       /* sx.val.l = constant                          */
 474
 475                         s3 = iptr->sx.val.l & 0xffffffff;
 476                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
 477                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 478                         if (IS_IMM(s3))
 479                                 M_SUB_IMMS(GET_LOW_REG(d), s1, s3);
 480                         else {
 481                                 ICONST(REG_ITMP3, s3);
 482                                 M_SUB_S(GET_LOW_REG(d), s1, REG_ITMP3);
 483                         }
 484                         s3 = iptr->sx.val.l >> 32;
 485                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
 486                         if (IS_IMM(s3))
 487                                 M_SBC_IMM(GET_HIGH_REG(d), s1, s3);
 488                         else {
 489                                 ICONST(REG_ITMP3, s3);
 490                                 M_SBC(GET_HIGH_REG(d), s1, REG_ITMP3);
 491                         }
 492                         emit_store_dst(jd, iptr, d);
 493                         break;
 494
 495                 case ICMD_IMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 496
 497                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 498                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 499                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 500                         M_MUL(d, s1, s2);
 501                         emit_store_dst(jd, iptr, d);
 502                         break;
 503
 504                 case ICMD_IDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 505                 case ICMD_IREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 506
 507                         s1 = emit_load_s1(jd, iptr, REG_A0);
 508                         s2 = emit_load_s2(jd, iptr, REG_A1);
 509                         emit_arithmetic_check(cd, iptr, s2);
 510
 511                         /* move arguments into argument registers */
 512                         M_INTMOVE(s1, REG_A0);
 513                         M_INTMOVE(s2, REG_A1);
 514
 515                         /* call builtin function */
 516                         bte = iptr->sx.s23.s3.bte;
 517                         disp = dseg_add_functionptr(cd, bte->fp);
 518                         M_DSEG_BRANCH(disp);
 519
 520                         /* recompute pv */
 521                         emit_recompute_pv(cd);
 522
 523                         /* move result into destination register */
 524                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
 525                         M_INTMOVE(REG_RESULT, d);
 526                         emit_store_dst(jd, iptr, d);
 527                         break;
 528
 529                 case ICMD_LDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 530                 case ICMD_LREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 531
 532                         /* move arguments into argument registers */
 533
 534                         s1 = emit_load_s1(jd, iptr, REG_A0_A1_PACKED);
 535                         s2 = emit_load_s2(jd, iptr, REG_A2_A3_PACKED);
 536                         /* XXX TODO: only do this if arithmetic check is really done! */
 537                         M_ORR(GET_HIGH_REG(s2), GET_LOW_REG(s2), REG_ITMP3);
 538                         emit_arithmetic_check(cd, iptr, REG_ITMP3);
 539
 540                         M_LNGMOVE(s1, REG_A0_A1_PACKED);
 541                         M_LNGMOVE(s2, REG_A2_A3_PACKED);
 542
 543                         /* call builtin function */
 544                         bte = iptr->sx.s23.s3.bte;
 545                         disp = dseg_add_functionptr(cd, bte->fp);
 546                         M_DSEG_BRANCH(disp);
 547
 548                         /* recompute pv */
 549                         emit_recompute_pv(cd);
 550
 551                         /* move result into destination register */
 552                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
 553                         M_LNGMOVE(REG_RESULT_PACKED, d);
 554                         emit_store_dst(jd, iptr, d);
 555                         break;
 556
 557                 case ICMD_IMULPOW2:   /* ..., value  ==> ..., value * (2 ^ constant)  */
 558                                       /* sx.val.i = constant                          */
 559
 560                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 561                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 562                         M_MOV(d, REG_LSL(s1, iptr->sx.val.i));
 563                         emit_store_dst(jd, iptr, d);
 564                         break;
 565
 566                 case ICMD_IDIVPOW2:   /* ..., value  ==> ..., value / (2 ^ constant)  */
 567                                       /* sx.val.i = constant                          */
 568
 569                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 570                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 571                         /* this rounds towards 0 as java likes it */
 572                         M_MOV(REG_ITMP3, REG_ASR(s1, 31));
 573                         M_ADD(REG_ITMP3, s1, REG_LSR(REG_ITMP3, 32 - iptr->sx.val.i));
 574                         M_MOV(d, REG_ASR(REG_ITMP3, iptr->sx.val.i));
 575                         /* this rounds towards nearest, not java style */
 576                         /*M_MOV_S(d, REG_ASR(s1, iptr->sx.val.i));
 577                         M_ADCMI_IMM(d, d, 0);*/
 578                         emit_store_dst(jd, iptr, d);
 579                         break;
 580
 581                 case ICMD_IREMPOW2:   /* ..., value  ==> ..., value % constant        */
 582                                       /* sx.val.i = constant [ (2 ^ x) - 1 ]          */
 583
 584                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 585                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 586                         M_MOV_S(REG_ITMP1, s1);
 587                         M_RSBMI_IMM(REG_ITMP1, REG_ITMP1, 0);
 588                         if (IS_IMM(iptr->sx.val.i))
 589                                 M_AND_IMM(REG_ITMP1, iptr->sx.val.i, d);
 590                         else {
 591                                 ICONST(REG_ITMP3, iptr->sx.val.i);
 592                                 M_AND(REG_ITMP1, REG_ITMP3, d);
 593                         }
 594                         M_RSBMI_IMM(d, d, 0);
 595                         emit_store_dst(jd, iptr, d);
 596                         break;
 597
 598                 case ICMD_ISHL:       /* ..., val1, val2  ==> ..., val1 << val2       */
 599
 600                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 601                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 602                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 603                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 604                         M_MOV(d, REG_LSL_REG(s1, REG_ITMP2));
 605                         emit_store_dst(jd, iptr, d);
 606                         break;
 607
 608                 case ICMD_ISHR:       /* ..., val1, val2  ==> ..., val1 >> val2       */
 609
 610                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 611                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 612                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 613                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 614                         M_MOV(d, REG_ASR_REG(s1, REG_ITMP2));
 615                         emit_store_dst(jd, iptr, d);
 616                         break;
 617
 618                 case ICMD_IUSHR:      /* ..., val1, val2  ==> ..., val1 >>> val2      */
 619
 620                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 621                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 622                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 623                         M_AND_IMM(s2, 0x1f, REG_ITMP2);
 624                         M_MOV(d, REG_LSR_REG(s1, REG_ITMP2));
 625                         emit_store_dst(jd, iptr, d);
 626                         break;
 627
 628                 case ICMD_ISHLCONST:  /* ..., value  ==> ..., value << constant       */
 629                                       /* sx.val.i = constant                          */
 630
 631                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 632                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
 633                         M_MOV(d, REG_LSL(s1, iptr->sx.val.i & 0x1f));
 634                         emit_store_dst(jd, iptr, d);
 635                         break;
 636
 637                 case ICMD_ISHRCONST:  /* ..., value  ==> ..., value >> constant       */
 638                                       /* sx.val.i = constant                          */
 639
 640                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 641                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 642                         /* we need to check for zero here because arm interprets it as SHR by 32 */
 643                         if ((iptr->sx.val.i & 0x1f) == 0) {
 644                                 M_INTMOVE(s1, d);
 645                         } else {
 646                                 M_MOV(d, REG_ASR(s1, iptr->sx.val.i & 0x1f));
 647                         }
 648                         emit_store_dst(jd, iptr, d);
 649                         break;
 650
 651                 case ICMD_IUSHRCONST: /* ..., value  ==> ..., value >>> constant      */
 652                                       /* sx.val.i = constant                          */
 653
 654                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 655                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 656                         /* we need to check for zero here because arm interprets it as SHR by 32 */
 657                         if ((iptr->sx.val.i & 0x1f) == 0)
 658                                 M_INTMOVE(s1, d);
 659                         else
 660                                 M_MOV(d, REG_LSR(s1, iptr->sx.val.i & 0x1f));
 661                         emit_store_dst(jd, iptr, d);
 662                         break;
 663
 664                 case ICMD_IAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 665
 666                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 667                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 668                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 669                         M_AND(s1, s2, d);
 670                         emit_store_dst(jd, iptr, d);
 671                         break;
 672
 673                 case ICMD_LAND:       /* ..., val1, val2  ==> ..., val1 & val2        */
 674
 675                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
 676                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP1);
 677                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 678                         M_AND(s1, s2, GET_LOW_REG(d));
 679                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
 680                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
 681                         M_AND(s1, s2, GET_HIGH_REG(d));
 682                         emit_store_dst(jd, iptr, d);
 683                         break;
 684
 685                 case ICMD_IOR:        /* ..., val1, val2  ==> ..., val1 | val2        */
 686
 687                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 688                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 689                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 690                         M_ORR(s1, s2, d);
 691                         emit_store_dst(jd, iptr, d);
 692                         break;
 693
 694                 case ICMD_LOR:       /* ..., val1, val2  ==> ..., val1 | val2        */
 695
 696                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
 697                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP1);
 698                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 699                         M_ORR(s1, s2, GET_LOW_REG(d));
 700                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
 701                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
 702                         M_ORR(s1, s2, GET_HIGH_REG(d));
 703                         emit_store_dst(jd, iptr, d);
 704                         break;
 705
 706                 case ICMD_IXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
 707
 708                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 709                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 710                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 711                         M_EOR(s1, s2, d);
 712                         emit_store_dst(jd, iptr, d);
 713                         break;
 714
 715                 case ICMD_LXOR:       /* ..., val1, val2  ==> ..., val1 ^ val2        */
 716
 717                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
 718                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP1);
 719                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
 720                         M_EOR(s1, s2, GET_LOW_REG(d));
 721                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP3);
 722                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
 723                         M_EOR(s1, s2, GET_HIGH_REG(d));
 724                         emit_store_dst(jd, iptr, d);
 725                         break;
 726
 727
 728         /* floating operations ************************************************/
 729
 730 #if !defined(ENABLE_SOFTFLOAT)
 731
 732                 case ICMD_FNEG:       /* ..., value  ==> ..., - value                 */
 733
 734                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 735                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 736                         M_FNEG(s1, d);
 737                         emit_store_dst(jd, iptr, d);
 738                         break;
 739
 740                 case ICMD_FADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 741
 742                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 743                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 744                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 745                         M_FADD(s1, s2, d);
 746                         emit_store_dst(jd, iptr, d);
 747                         break;
 748
 749                 case ICMD_FSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 750
 751                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 752                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 753                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 754                         M_FSUB(s1, s2, d);
 755                         emit_store_dst(jd, iptr, d);
 756                         break;
 757
 758                 case ICMD_FMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 759
 760                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 761                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 762                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 763                         M_FMUL(s1, s2, d);
 764                         emit_store_dst(jd, iptr, d);
 765                         break;
 766
 767                 case ICMD_FDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 768                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 769                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 770                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 771                         M_FDIV(s1, s2, d);
 772                         emit_store_dst(jd, iptr, d);
 773                         break;
 774
 775                 /* ATTENTION: Jave does not want IEEE behaviour in FREM, do
 776                    not use this */
 777
 778 #if 0
 779                 case ICMD_FREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 780
 781                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 782                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 783                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 784                         M_RMFS(d, s1, s2);
 785                         emit_store_dst(jd, iptr, d);
 786                         break;
 787 #endif
 788
 789                 case ICMD_DNEG:       /* ..., value  ==> ..., - value                 */
 790
 791                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 792                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 793                         M_DNEG(s1, d);
 794                         emit_store_dst(jd, iptr, d);
 795                         break;
 796
 797                 case ICMD_DADD:       /* ..., val1, val2  ==> ..., val1 + val2        */
 798
 799                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 800                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 801                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 802                         M_DADD(s1, s2, d);
 803                         emit_store_dst(jd, iptr, d);
 804                         break;
 805
 806                 case ICMD_DSUB:       /* ..., val1, val2  ==> ..., val1 - val2        */
 807
 808                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 809                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 810                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 811                         M_DSUB(s1, s2, d);
 812                         emit_store_dst(jd, iptr, d);
 813                         break;
 814
 815                 case ICMD_DMUL:       /* ..., val1, val2  ==> ..., val1 * val2        */
 816
 817                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 818                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 819                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 820                         M_DMUL(s1, s2, d);
 821                         emit_store_dst(jd, iptr, d);
 822                         break;
 823
 824                 case ICMD_DDIV:       /* ..., val1, val2  ==> ..., val1 / val2        */
 825
 826                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 827                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 828                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 829                         M_DDIV(s1, s2, d);
 830                         emit_store_dst(jd, iptr, d);
 831                         break;
 832
 833                 /* ATTENTION: Jave does not want IEEE behaviour in DREM, do
 834                    not use this */
 835
 836 #if 0
 837                 case ICMD_DREM:       /* ..., val1, val2  ==> ..., val1 % val2        */
 838
 839                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 840                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 841                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 842                         M_RMFD(d, s1, s2);
 843                         emit_store_dst(jd, iptr, d);
 844                         break;
 845 #endif
 846
 847                 case ICMD_I2F:       /* ..., value  ==> ..., (float) value            */
 848
 849                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 850                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 851 #if defined(__VFP_FP__)
 852                         M_FMSR(s1, d);
 853                         M_CVTIF(d, d);
 854 #else
 855                         M_CVTIF(s1, d);
 856 #endif
 857                         emit_store_dst(jd, iptr, d);
 858                         break;
 859
 860                 case ICMD_I2D:       /* ..., value  ==> ..., (double) value           */
 861
 862                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 863                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
 864 #if defined(__VFP_FP__)
 865                         M_FMSR(s1, d);
 866                         M_CVTID(d, d);
 867 #else
 868                         M_CVTID(s1, d);
 869 #endif
 870                         emit_store_dst(jd, iptr, d);
 871                         break;
 872
 873                 case ICMD_F2I:       /* ..., value  ==> ..., (int) value              */
 874
 875                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 876                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 877 #if defined(__VFP_FP__)
 878                         M_CVTFI(s1, REG_FTMP2);
 879                         M_FMRS(REG_FTMP2, d);
 880 #else
 881                         /* this uses round towards zero, as Java likes it */
 882                         M_CVTFI(s1, d);
 883                         /* this checks for NaN; to return zero as Java likes it */
 884                         M_FCMP(s1, 0x8);
 885                         M_MOVVS_IMM(0, d);
 886 #endif
 887                         emit_store_dst(jd, iptr, d);
 888                         break;
 889
 890                 case ICMD_D2I:       /* ..., value  ==> ..., (int) value              */
 891
 892                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 893                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 894 #if defined(__VFP_FP__)
 895                         M_CVTDI(s1, REG_FTMP2);
 896                         M_FMRS(REG_FTMP2, d);
 897 #else
 898                         /* this uses round towards zero, as Java likes it */
 899                         M_CVTDI(s1, d);
 900                         /* this checks for NaN; to return zero as Java likes it */
 901                         M_DCMP(s1, 0x8);
 902                         M_MOVVS_IMM(0, d);
 903 #endif
 904                         emit_store_dst(jd, iptr, d);
 905                         break;
 906
 907                 case ICMD_D2F:       /* ..., value  ==> ..., (float) value            */
 908
 909                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 910                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP2);
 911                         M_CVTDF(s1, d);
 912                         emit_store_dst(jd, iptr, d);
 913                         break;
 914
 915                 case ICMD_F2D:       /* ..., value  ==> ..., (double) value           */
 916
 917                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 918                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP2);
 919                         M_CVTFD(s1, d);
 920                         emit_store_dst(jd, iptr, d);
 921                         break;
 922
 923                 case ICMD_FCMPG:      /* ..., val1, val2  ==> ..., val1 fcmpg val2    */
 924
 925                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 926                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 927                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 928                         M_FCMP(s2, s1);
 929                         M_MOV_IMM(d, 0);
 930 #if defined(__VFP_FP__)
 931                         M_FMSTAT; /* on VFP we need to transfer the flags */
 932 #endif
 933                         M_SUBGT_IMM(d, d, 1);
 934                         M_ADDLT_IMM(d, d, 1);
 935                         emit_store_dst(jd, iptr, d);
 936                         break;
 937
 938                 case ICMD_DCMPG:      /* ..., val1, val2  ==> ..., val1 dcmpg val2    */
 939
 940                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 941                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 942                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 943                         M_DCMP(s2, s1);
 944                         M_MOV_IMM(d, 0);
 945 #if defined(__VFP_FP__)
 946                         M_FMSTAT; /* on VFP we need to transfer the flags */
 947 #endif
 948                         M_SUBGT_IMM(d, d, 1);
 949                         M_ADDLT_IMM(d, d, 1);
 950                         emit_store_dst(jd, iptr, d);
 951                         break;
 952
 953                 case ICMD_FCMPL:      /* ..., val1, val2  ==> ..., val1 fcmpl val2    */
 954
 955                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 956                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 957                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 958                         M_FCMP(s1, s2);
 959                         M_MOV_IMM(d, 0);
 960 #if defined(__VFP_FP__)
 961                         M_FMSTAT; /* on VFP we need to transfer the flags */
 962 #endif
 963                         M_SUBLT_IMM(d, d, 1);
 964                         M_ADDGT_IMM(d, d, 1);
 965                         emit_store_dst(jd, iptr, d);
 966                         break;
 967
 968                 case ICMD_DCMPL:      /* ..., val1, val2  ==> ..., val1 dcmpl val2    */
 969
 970                         s1 = emit_load_s1(jd, iptr, REG_FTMP1);
 971                         s2 = emit_load_s2(jd, iptr, REG_FTMP2);
 972                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 973                         M_DCMP(s1, s2);
 974                         M_MOV_IMM(d, 0);
 975 #if defined(__VFP_FP__)
 976                         M_FMSTAT; /* on VFP we need to transfer the flags */
 977 #endif
 978                         M_SUBLT_IMM(d, d, 1);
 979                         M_ADDGT_IMM(d, d, 1);
 980                         emit_store_dst(jd, iptr, d);
 981                         break;
 982
 983 #endif /* !defined(ENABLE_SOFTFLOAT) */
 984
 985
 986                 /* memory operations **************************************************/
 987
 988                 case ICMD_BALOAD:     /* ..., arrayref, index  ==> ..., value         */
 989
 990                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
 991                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
 992                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
 993                         /* implicit null-pointer check */
 994                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
 995                         M_ADD(REG_ITMP1, s1, s2); /* REG_ITMP1 = s1 + 1 * s2 */
 996                         M_LDRSB(d, REG_ITMP1, OFFSET(java_bytearray_t, data[0]));
 997                         emit_store_dst(jd, iptr, d);
 998                         break;
 999
1000                 case ICMD_CALOAD:     /* ..., arrayref, index  ==> ..., value         */
1001
1002                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1003                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1004                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1005                         /* implicit null-pointer check */
1006                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1007                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 1)); /* REG_ITMP1 = s1 + 2 * s2 */
1008                         M_LDRH(d, REG_ITMP1, OFFSET(java_chararray_t, data[0]));
1009                         emit_store_dst(jd, iptr, d);
1010                         break;
1011
1012                 case ICMD_SALOAD:     /* ..., arrayref, index  ==> ..., value         */
1013
1014                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1015                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1016                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1017                         /* implicit null-pointer check */
1018                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1019                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 1)); /* REG_ITMP1 = s1 + 2 * s2 */
1020                         M_LDRSH(d, REG_ITMP1, OFFSET(java_shortarray_t, data[0]));
1021                         emit_store_dst(jd, iptr, d);
1022                         break;
1023
1024                 case ICMD_IALOAD:     /* ..., arrayref, index  ==> ..., value         */
1025
1026                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1027                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1028                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1029                         /* implicit null-pointer check */
1030                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1031                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 2)); /* REG_ITMP1 = s1 + 4 * s2 */
1032                         M_ILD_INTERN(d, REG_ITMP1, OFFSET(java_intarray_t, data[0]));
1033                         emit_store_dst(jd, iptr, d);
1034                         break;
1035
1036                 case ICMD_LALOAD:     /* ..., arrayref, index  ==> ..., value         */
1037
1038                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1039                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1040                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1041                         /* implicit null-pointer check */
1042                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1043                         M_ADD(REG_ITMP3, s1, REG_LSL(s2, 3)); /* REG_ITMP3 = s1 + 8 * s2 */
1044                         M_LLD_INTERN(d, REG_ITMP3, OFFSET(java_longarray_t, data[0]));
1045                         emit_store_dst(jd, iptr, d);
1046                         break;
1047
1048                 case ICMD_FALOAD:     /* ..., arrayref, index  ==> ..., value         */
1049
1050                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1051                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1052                         /* implicit null-pointer check */
1053                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1054                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 2)); /* REG_ITMP1 = s1 + 4 * s2 */
1055 #if !defined(ENABLE_SOFTFLOAT)
1056                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1057                         M_FLD_INTERN(d, REG_ITMP1, OFFSET(java_floatarray_t, data[0]));
1058 #else
1059                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1060                         M_ILD_INTERN(d, REG_ITMP1, OFFSET(java_floatarray_t, data[0]));
1061 #endif
1062                         emit_store_dst(jd, iptr, d);
1063                         break;
1064
1065                 case ICMD_DALOAD:     /* ..., arrayref, index  ==> ..., value         */
1066
1067                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1068                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1069                         /* implicit null-pointer check */
1070                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1071                         M_ADD(REG_ITMP3, s1, REG_LSL(s2, 3)); /* REG_ITMP3 = s1 + 8 * s2 */
1072 #if !defined(ENABLE_SOFTFLOAT)
1073                         d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1074                         M_DLD_INTERN(d, REG_ITMP3, OFFSET(java_doublearray_t, data[0]));
1075 #else
1076                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1077                         M_LLD_INTERN(d, REG_ITMP3, OFFSET(java_doublearray_t, data[0]));
1078 #endif
1079                         emit_store_dst(jd, iptr, d);
1080                         break;
1081
1082                 case ICMD_AALOAD:     /* ..., arrayref, index  ==> ..., value         */
1083
1084                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1085                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1086                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1087                         /* implicit null-pointer check */
1088                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1089                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 2)); /* REG_ITMP1 = s1 + 4 * s2 */
1090                         M_LDR_INTERN(d, REG_ITMP1, OFFSET(java_objectarray_t, data[0]));
1091                         emit_store_dst(jd, iptr, d);
1092                         break;
1093
1094                 case ICMD_BASTORE:    /* ..., arrayref, index, value  ==> ...         */
1095
1096                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1097                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1098                         /* implicit null-pointer check */
1099                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1100                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1101                         M_ADD(REG_ITMP1, s1, s2); /* REG_ITMP1 = s1 + 1 * s2 */
1102                         M_STRB(s3, REG_ITMP1, OFFSET(java_bytearray_t, data[0]));
1103                         break;
1104
1105                 case ICMD_CASTORE:    /* ..., arrayref, index, value  ==> ...         */
1106
1107                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1108                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1109                         /* implicit null-pointer check */
1110                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1111                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1112                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 1)); /* REG_ITMP1 = s1 + 2 * s2 */
1113                         M_STRH(s3, REG_ITMP1, OFFSET(java_chararray_t, data[0]));
1114                         break;
1115
1116                 case ICMD_SASTORE:    /* ..., arrayref, index, value  ==> ...         */
1117
1118                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1119                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1120                         /* implicit null-pointer check */
1121                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1122                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1123                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 1)); /* REG_ITMP1 = s1 + 2 * s2 */
1124                         M_STRH(s3, REG_ITMP1, OFFSET(java_shortarray_t, data[0]));
1125                         break;
1126
1127                 case ICMD_IASTORE:    /* ..., arrayref, index, value  ==> ...         */
1128
1129                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1130                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1131                         /* implicit null-pointer check */
1132                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1133                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1134                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 2)); /* REG_ITMP1 = s1 + 4 * s2 */
1135                         M_IST_INTERN(s3, REG_ITMP1, OFFSET(java_intarray_t, data[0]));
1136                         break;
1137
1138                 case ICMD_LASTORE:    /* ..., arrayref, index, value  ==> ...         */
1139
1140                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1141                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1142                         /* implicit null-pointer check */
1143                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1144                         M_ADD(REG_ITMP3, s1, REG_LSL(s2, 3)); /* REG_ITMP3 = s1 + 8 * s2 */
1145                         s3 = emit_load_s3(jd, iptr, REG_ITMP12_PACKED);
1146                         M_LST_INTERN(s3, REG_ITMP3, OFFSET(java_longarray_t, data[0]));
1147                         break;
1148
1149                 case ICMD_FASTORE:    /* ..., arrayref, index, value  ==> ...         */
1150
1151                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1152                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1153                         /* implicit null-pointer check */
1154                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1155                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 2)); /* REG_ITMP1 = s1 + 4 * s2 */
1156 #if !defined(ENABLE_SOFTFLOAT)
1157                         s3 = emit_load_s3(jd, iptr, REG_FTMP1);
1158                         M_FST_INTERN(s3, REG_ITMP1, OFFSET(java_floatarray_t, data[0]));
1159 #else
1160                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1161                         M_IST_INTERN(s3, REG_ITMP1, OFFSET(java_floatarray_t, data[0]));
1162 #endif
1163                         break;
1164
1165                 case ICMD_DASTORE:    /* ..., arrayref, index, value  ==> ...         */
1166
1167                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1168                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1169                         /* implicit null-pointer check */
1170                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1171                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 3)); /* REG_ITMP1 = s1 + 8 * s2 */
1172 #if !defined(ENABLE_SOFTFLOAT)
1173                         s3 = emit_load_s3(jd, iptr, REG_FTMP1);
1174                         M_DST_INTERN(s3, REG_ITMP1, OFFSET(java_doublearray_t, data[0]));
1175 #else
1176                         s3 = emit_load_s3(jd, iptr, REG_ITMP23_PACKED);
1177                         M_LST_INTERN(s3, REG_ITMP1, OFFSET(java_doublearray_t, data[0]));
1178 #endif
1179                         break;
1180
1181                 case ICMD_AASTORE:    /* ..., arrayref, index, value  ==> ...         */
1182
1183                         s1 = emit_load_s1(jd, iptr, REG_A0);
1184                         s2 = emit_load_s2(jd, iptr, REG_ITMP1);
1185                         s3 = emit_load_s3(jd, iptr, REG_A1);
1186
1187                         /* implicit null-pointer check */
1188                         emit_arrayindexoutofbounds_check(cd, iptr, s1, s2);
1189
1190                         /* move arguments to argument registers */
1191                         M_INTMOVE(s1, REG_A0);
1192                         M_INTMOVE(s3, REG_A1);
1193
1194                         /* call builtin function */
1195                         disp = dseg_add_functionptr(cd, BUILTIN_FAST_canstore);
1196                         M_DSEG_BRANCH(disp);
1197
1198                         /* recompute pv */
1199                         emit_recompute_pv(cd);
1200
1201                         /* check resturn value of builtin */
1202                         emit_arraystore_check(cd, iptr);
1203
1204                         /* finally store address into array */
1205                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1206                         s2 = emit_load_s2(jd, iptr, REG_ITMP2);
1207                         s3 = emit_load_s3(jd, iptr, REG_ITMP3);
1208                         M_ADD(REG_ITMP1, s1, REG_LSL(s2, 2)); /* REG_ITMP1 = s1 + 4 * s2 */
1209                         M_STR_INTERN(s3, REG_ITMP1, OFFSET(java_objectarray_t, data[0]));
1210                         break;
1211
1212                 case ICMD_GETSTATIC:  /* ...  ==> ..., value                          */
1213                         switch (fieldtype) {
1214                         case TYPE_INT:
1215 #if defined(ENABLE_SOFTFLOAT)
1216                         case TYPE_FLT:
1217 #endif
1218                         case TYPE_ADR:
1219                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1220                                 M_ILD_INTERN(d, REG_ITMP3, 0);
1221                                 break;
1222                         case TYPE_LNG:
1223 #if defined(ENABLE_SOFTFLOAT)
1224                         case TYPE_DBL:
1225 #endif
1226                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1227                                 M_LLD_INTERN(d, REG_ITMP3, 0);
1228                                 break;
1229 #if !defined(ENABLE_SOFTFLOAT)
1230                         case TYPE_FLT:
1231                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1232                                 M_FLD_INTERN(d, REG_ITMP3, 0);
1233                                 break;
1234                         case TYPE_DBL:
1235                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1236                                 M_DLD_INTERN(d, REG_ITMP3, 0);
1237                                 break;
1238 #endif
1239                         default:
1240                                 assert(0);
1241                         }
1242                         emit_store_dst(jd, iptr, d);
1243                         break;
1244
1245                 case ICMD_GETFIELD:   /* ..., objectref, value  ==> ...               */
1246
1247                         s1 = emit_load_s1(jd, iptr, REG_ITMP3);
1248                         emit_nullpointer_check(cd, iptr, s1);
1249
1250
1251                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1252                                 uf        = iptr->sx.s23.s3.uf;
1253                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1254                                 disp      = 0;
1255                         }
1256                         else {
1257                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1258                                 fieldtype = fi->type;
1259                                 disp      = fi->offset;
1260                         }
1261
1262 #if !defined(ENABLE_SOFTFLOAT)
1263                         /* HACK: softnull checks on floats */
1264                         if (!INSTRUCTION_MUST_CHECK(iptr) && IS_FLT_DBL_TYPE(fieldtype))
1265                                 emit_nullpointer_check_force(cd, iptr, s1);
1266 #endif
1267
1268                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1269                                 /* XXX REMOVE ME */
1270                                 uf = iptr->sx.s23.s3.uf;
1271
1272                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1273                         }
1274
1275                         switch (fieldtype) {
1276                         case TYPE_INT:
1277 #if defined(ENABLE_SOFTFLOAT)
1278                         case TYPE_FLT:
1279 #endif
1280                         case TYPE_ADR:
1281                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
1282                                 M_ILD(d, s1, disp);
1283                                 break;
1284                         case TYPE_LNG:
1285 #if defined(ENABLE_SOFTFLOAT)
1286                         case TYPE_DBL:
1287 #endif
1288                                 d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
1289                                 M_LLD(d, s1, disp);
1290                                 break;
1291 #if !defined(ENABLE_SOFTFLOAT)
1292                         case TYPE_FLT:
1293                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1294                                 M_FLD(d, s1, disp);
1295                                 break;
1296                         case TYPE_DBL:
1297                                 d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
1298                                 M_DLD(d, s1, disp);
1299                                 break;
1300 #endif
1301                         default:
1302                                 assert(0);
1303                         }
1304                         emit_store_dst(jd, iptr, d);
1305                         break;
1306
1307                 case ICMD_PUTFIELD:   /* ..., objectref, value  ==> ...               */
1308
1309                         s1 = emit_load_s1(jd, iptr, REG_ITMP3);
1310                         emit_nullpointer_check(cd, iptr, s1);
1311
1312                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1313                                 uf        = iptr->sx.s23.s3.uf;
1314                                 fieldtype = uf->fieldref->parseddesc.fd->type;
1315                                 disp      = 0;
1316                         }
1317                         else {
1318                                 fi        = iptr->sx.s23.s3.fmiref->p.field;
1319                                 fieldtype = fi->type;
1320                                 disp      = fi->offset;
1321                         }
1322
1323 #if !defined(ENABLE_SOFTFLOAT)
1324                         /* HACK: softnull checks on floats */
1325                         if (!INSTRUCTION_MUST_CHECK(iptr) && IS_FLT_DBL_TYPE(fieldtype))
1326                                 emit_nullpointer_check_force(cd, iptr, s1);
1327 #endif
1328
1329                         switch (fieldtype) {
1330                         case TYPE_INT:
1331 #if defined(ENABLE_SOFTFLOAT)
1332                         case TYPE_FLT:
1333 #endif
1334                         case TYPE_ADR:
1335                                 s2 = emit_load_s2(jd, iptr, REG_ITMP1);
1336                                 break;
1337 #if defined(ENABLE_SOFTFLOAT)
1338                         case TYPE_DBL: /* fall through */
1339 #endif
1340                         case TYPE_LNG:
1341                                 s2 = emit_load_s2(jd, iptr, REG_ITMP12_PACKED);
1342                                 break;
1343 #if !defined(ENABLE_SOFTFLOAT)
1344                         case TYPE_FLT:
1345                         case TYPE_DBL:
1346                                 s2 = emit_load_s2(jd, iptr, REG_FTMP1);
1347                                 break;
1348 #endif
1349                         default:
1350                                 assert(0);
1351                         }
1352
1353                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1354                                 /* XXX REMOVE ME */
1355                                 uf = iptr->sx.s23.s3.uf;
1356
1357                                 patcher_add_patch_ref(jd, PATCHER_get_putfield, uf, 0);
1358                         }
1359
1360                         switch (fieldtype) {
1361                         case TYPE_INT:
1362 #if defined(ENABLE_SOFTFLOAT)
1363                         case TYPE_FLT:
1364 #endif
1365                         case TYPE_ADR:
1366                                 M_IST(s2, s1, disp);
1367                                 break;
1368                         case TYPE_LNG:
1369 #if defined(ENABLE_SOFTFLOAT)
1370                         case TYPE_DBL:
1371 #endif
1372                                 M_LST(s2, s1, disp);
1373                                 break;
1374 #if !defined(ENABLE_SOFTFLOAT)
1375                         case TYPE_FLT:
1376                                 M_FST(s2, s1, disp);
1377                                 break;
1378                         case TYPE_DBL:
1379                                 M_DST(s2, s1, disp);
1380                                 break;
1381 #endif
1382                         default:
1383                                 assert(0);
1384                         }
1385                         break;
1386
1387
1388                 /* branch operations **************************************************/
1389
1390                 case ICMD_ATHROW:       /* ..., objectref ==> ... (, objectref)       */
1391
1392                         disp = dseg_add_functionptr(cd, asm_handle_exception);
1393                         M_DSEG_LOAD(REG_ITMP3, disp);
1394                         M_MOV(REG_ITMP2_XPC, REG_PC);
1395                         M_MOV(REG_PC, REG_ITMP3);
1396                         M_NOP;              /* nop ensures that XPC is less than the end  */
1397                                             /* of basic block                             */
1398                         break;
1399
1400                 case ICMD_IF_LEQ:       /* ..., value ==> ...                         */
1401
1402                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1403                         s2 = emit_load_s1_low(jd, iptr, REG_ITMP2);
1404                         if (iptr->sx.val.l == 0) {
1405                                 M_ORR_S(s1, s2, REG_ITMP3);
1406                         }
1407                         else {
1408                                 emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
1409                                 /*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1410                                 M_CMP(s1, REG_ITMP3);*/
1411                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1412                                 M_CMPEQ(s2, REG_ITMP3);
1413                         }
1414                         emit_beq(cd, iptr->dst.block);
1415                         break;
1416
1417                 case ICMD_IF_LLT:       /* ..., value ==> ...                         */
1418
1419                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1420                         s2 = emit_load_s1_low(jd, iptr, REG_ITMP2);
1421                         if (iptr->sx.val.l == 0) {
1422                                 /* if high word is less than zero, the whole long is too */
1423                                 M_CMP_IMM(s1, 0);
1424                                 emit_blt(cd, iptr->dst.block);
1425                         }
1426                         else {
1427                                 /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1428                                 emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
1429                                 /*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1430                                 M_CMP(s1, REG_ITMP3);*/
1431                                 M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
1432                                 M_MOVGT_IMM(2, REG_ITMP1);
1433                                 M_MOVEQ_IMM(1, REG_ITMP1);
1434
1435                                 /* low compare: x=x-1(ifLO) */
1436                                 emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
1437                                 /*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1438                                 M_CMP(s2, REG_ITMP3);*/
1439                                 M_SUBLO_IMM(REG_ITMP1, REG_ITMP1, 1);
1440
1441                                 /* branch if (x LT 1) */
1442                                 M_CMP_IMM(REG_ITMP1, 1);
1443                                 emit_blt(cd, iptr->dst.block);
1444                         }
1445                         break;
1446
1447                 case ICMD_IF_LLE:       /* ..., value ==> ...                         */
1448
1449                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1450                         s2 = emit_load_s1_low(jd, iptr, REG_ITMP2);
1451                         if (iptr->sx.val.l == 0) {
1452                                 /* if high word is less than zero, the whole long is too  */
1453                                 M_CMP_IMM(s1, 0);
1454                                 emit_blt(cd, iptr->dst.block);
1455
1456                                 /* ... otherwise the low word has to be zero (tricky!) */
1457                                 M_CMPEQ_IMM(s2, 0);
1458                                 emit_beq(cd, iptr->dst.block);
1459                         }
1460                         else {
1461                                 /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1462                                 emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
1463                                 /*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1464                                 M_CMP(s1, REG_ITMP3);*/
1465                                 M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
1466                                 M_MOVGT_IMM(2, REG_ITMP1);
1467                                 M_MOVEQ_IMM(1, REG_ITMP1);
1468
1469                                 /* low compare: x=x+1(ifHI) */
1470                                 emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
1471                                 /*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1472                                 M_CMP(s2, REG_ITMP3);*/
1473                                 M_ADDHI_IMM(REG_ITMP1, REG_ITMP1, 1);
1474
1475                                 /* branch if (x LE 1) */
1476                                 M_CMP_IMM(REG_ITMP1, 1);
1477                                 emit_ble(cd, iptr->dst.block);
1478                         }
1479                         break;
1480
1481                 case ICMD_IF_LGE:       /* ..., value ==> ...                         */
1482
1483                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1484                         s2 = emit_load_s1_low(jd, iptr, REG_ITMP2);
1485                         if (iptr->sx.val.l == 0) {
1486                                 /* if high word is greater or equal zero, the whole long is too */
1487                                 M_CMP_IMM(s1, 0);
1488                                 emit_bge(cd, iptr->dst.block);
1489                         }
1490                         else {
1491                                 /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1492                                 emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
1493                                 /*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1494                                 M_CMP(s1, REG_ITMP3);*/
1495                                 M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
1496                                 M_MOVGT_IMM(2, REG_ITMP1);
1497                                 M_MOVEQ_IMM(1, REG_ITMP1);
1498
1499                                 /* low compare: x=x-1(ifLO) */
1500                                 emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
1501                                 /*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1502                                 M_CMP(s2, REG_ITMP3);*/
1503                                 M_SUBLO_IMM(REG_ITMP1, REG_ITMP1, 1);
1504
1505                                 /* branch if (x GE 1) */
1506                                 M_CMP_IMM(REG_ITMP1, 1);
1507                                 emit_bge(cd, iptr->dst.block);
1508                         }
1509                         break;
1510
1511                 case ICMD_IF_LGT:       /* ..., value ==> ...                         */
1512
1513                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1514                         s2 = emit_load_s1_low(jd, iptr, REG_ITMP2);
1515 #if 0
1516                         if (iptr->sx.val.l == 0) {
1517                                 /* if high word is greater than zero, the whole long is too */
1518                                 M_CMP_IMM(s1, 0);
1519                                 M_BGT(0);
1520                                 codegen_add_branch_ref(cd, iptr->dst.block);
1521
1522                                 /* ... or high was zero and low is non zero (tricky!) */
1523                                 M_EOR(REG_ITMP3, REG_ITMP3, REG_ITMP3);
1524                                 M_MOVLT_IMM(1, REG_ITMP3);
1525                                 M_ORR_S(REG_ITMP3, s2, REG_ITMP3);
1526                                 M_BNE(0);
1527                                 codegen_add_branch_ref(cd, iptr->dst.block);
1528                         }
1529                         else {
1530 #endif
1531                                 /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1532                                 emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
1533                                 /*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1534                                 M_CMP(s1, REG_ITMP3);*/
1535                                 M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
1536                                 M_MOVGT_IMM(2, REG_ITMP1);
1537                                 M_MOVEQ_IMM(1, REG_ITMP1);
1538
1539                                 /* low compare: x=x+1(ifHI) */
1540                                 emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
1541                                 /*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1542                                 M_CMP(s2, REG_ITMP3);*/
1543                                 M_ADDHI_IMM(REG_ITMP1, REG_ITMP1, 1);
1544
1545                                 /* branch if (x GT 1) */
1546                                 M_CMP_IMM(REG_ITMP1, 1);
1547                                 emit_bgt(cd, iptr->dst.block);
1548 #if 0
1549                         }
1550 #endif
1551                         break;
1552
1553                 case ICMD_IF_LNE:       /* ..., value ==> ...                         */
1554
1555                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1556                         s2 = emit_load_s1_low(jd, iptr, REG_ITMP2);
1557                         if (iptr->sx.val.l == 0) {
1558                                 M_ORR_S(s1, s2, REG_ITMP3);
1559                         }
1560                         else {
1561                                 emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
1562                                 /*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
1563                                 M_CMP(s1, REG_ITMP3);*/
1564                                 ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
1565                                 M_CMPEQ(s2, REG_ITMP3);
1566                         }
1567                         emit_bne(cd, iptr->dst.block);
1568                         break;
1569
1570                 case ICMD_IF_LCMPEQ:    /* ..., value, value ==> ...                  */
1571                                         /* op1 = target JavaVM pc                     */
1572
1573                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1574                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1575                         M_CMP(s1, s2);
1576
1577                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1578                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1579                         M_CMPEQ(s1, s2);
1580
1581                         emit_beq(cd, iptr->dst.block);
1582                         break;
1583
1584                 case ICMD_IF_LCMPNE:    /* ..., value, value ==> ...                  */
1585                                         /* op1 = target JavaVM pc                     */
1586
1587                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1588                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1589                         M_CMP(s1, s2);
1590
1591                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1592                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1593                         M_CMPEQ(s1, s2);
1594
1595                         emit_bne(cd, iptr->dst.block);
1596                         break;
1597
1598                 case ICMD_IF_LCMPLT:    /* ..., value, value ==> ...                  */
1599                                         /* op1 = target JavaVM pc                     */
1600
1601                         /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1602                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1603                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1604                         M_CMP(s1, s2);
1605                         M_EOR(REG_ITMP3, REG_ITMP3, REG_ITMP3);
1606                         M_MOVGT_IMM(2, REG_ITMP3);
1607                         M_MOVEQ_IMM(1, REG_ITMP3);
1608
1609                         /* low compare: x=x-1(ifLO) */
1610                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1611                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1612                         M_CMP(s1, s2);
1613                         M_SUBLO_IMM(REG_ITMP3, REG_ITMP3, 1);
1614
1615                         /* branch if (x LT 1) */
1616                         M_CMP_IMM(REG_ITMP3, 1);
1617                         emit_blt(cd, iptr->dst.block);
1618                         break;
1619
1620                 case ICMD_IF_LCMPLE:    /* ..., value, value ==> ...                  */
1621                                         /* op1 = target JavaVM pc                     */
1622
1623                         /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1624                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1625                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1626                         M_CMP(s1, s2);
1627                         M_EOR(REG_ITMP3, REG_ITMP3, REG_ITMP3);
1628                         M_MOVGT_IMM(2, REG_ITMP3);
1629                         M_MOVEQ_IMM(1, REG_ITMP3);
1630
1631                         /* low compare: x=x-1(ifLO) */
1632                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1633                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1634                         M_CMP(s1, s2);
1635                         M_ADDHI_IMM(REG_ITMP3, REG_ITMP3, 1);
1636
1637                         /* branch if (x LE 1) */
1638                         M_CMP_IMM(REG_ITMP3, 1);
1639                         emit_ble(cd, iptr->dst.block);
1640                         break;
1641
1642                 case ICMD_IF_LCMPGT:    /* ..., value, value ==> ...                  */
1643                                         /* op1 = target JavaVM pc                     */
1644
1645                         /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1646                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1647                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1648                         M_CMP(s1, s2);
1649                         M_EOR(REG_ITMP3, REG_ITMP3, REG_ITMP3);
1650                         M_MOVGT_IMM(2, REG_ITMP3);
1651                         M_MOVEQ_IMM(1, REG_ITMP3);
1652
1653                         /* low compare: x=x-1(ifLO) */
1654                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1655                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1656                         M_CMP(s1, s2);
1657                         M_ADDHI_IMM(REG_ITMP3, REG_ITMP3, 1);
1658
1659                         /* branch if (x GT 1) */
1660                         M_CMP_IMM(REG_ITMP3, 1);
1661                         emit_bgt(cd, iptr->dst.block);
1662                         break;
1663
1664                 case ICMD_IF_LCMPGE:    /* ..., value, value ==> ...                  */
1665                                         /* op1 = target JavaVM pc                     */
1666
1667                         /* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
1668                         s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
1669                         s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
1670                         M_CMP(s1, s2);
1671                         M_EOR(REG_ITMP3, REG_ITMP3, REG_ITMP3);
1672                         M_MOVGT_IMM(2, REG_ITMP3);
1673                         M_MOVEQ_IMM(1, REG_ITMP3);
1674
1675                         /* low compare: x=x-1(ifLO) */
1676                         s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
1677                         s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
1678                         M_CMP(s1, s2);
1679                         M_SUBLO_IMM(REG_ITMP3, REG_ITMP3, 1);
1680
1681                         /* branch if (x GE 1) */
1682                         M_CMP_IMM(REG_ITMP3, 1);
1683                         emit_bge(cd, iptr->dst.block);
1684                         break;
1685
1686                 case ICMD_TABLESWITCH:  /* ..., index ==> ...                         */
1687                         {
1688                         s4 i, l;
1689                         branch_target_t *table;
1690
1691                         table = iptr->dst.table;
1692
1693                         l = iptr->sx.s23.s2.tablelow;
1694                         i = iptr->sx.s23.s3.tablehigh;
1695
1696                         /* calculate new index (index - low) */
1697                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1698                         if (l  == 0) {
1699                                 M_INTMOVE(s1, REG_ITMP1);
1700                         } else if (IS_IMM(l)) {
1701                                 M_SUB_IMM(REG_ITMP1, s1, l);
1702                         } else {
1703                                 ICONST(REG_ITMP2, l);
1704                                 M_SUB(REG_ITMP1, s1, REG_ITMP2);
1705                         }
1706
1707                         /* range check (index <= high-low) */
1708                         i = i - l + 1;
1709                         emit_icmp_imm(cd, REG_ITMP1, i-1);
1710                         emit_bugt(cd, table[0].block);
1711
1712                         /* build jump table top down and use address of lowest entry */
1713
1714                         table += i;
1715
1716                         while (--i >= 0) {
1717                                 dseg_add_target(cd, table->block);
1718                                 --table;
1719                         }
1720                         }
1721
1722                         /* length of dataseg after last dseg_add_target is used by load */
1723                         /* TODO: this loads from data-segment */
1724                         M_ADD(REG_ITMP2, REG_PV, REG_LSL(REG_ITMP1, 2));
1725                         M_LDR(REG_PC, REG_ITMP2, -(cd->dseglen));
1726                         break;
1727
1728                 case ICMD_BUILTIN:
1729                         bte = iptr->sx.s23.s3.bte;
1730                         if (bte->stub == NULL) {
1731                                 disp = dseg_add_functionptr(cd, bte->fp);
1732                         } else {
1733                                 disp = dseg_add_functionptr(cd, bte->stub);
1734                         }
1735
1736                         M_DSEG_LOAD(REG_PV, disp); /* pointer to built-in-function */
1737
1738                         /* generate the actual call */
1739
1740                         M_MOV(REG_LR, REG_PC);
1741                         M_MOV(REG_PC, REG_PV);
1742
1743 #if !defined(__SOFTFP__)
1744                         /* TODO: this is only a hack, since we use R0/R1 for float
1745                            return!  this depends on gcc; it is independent from
1746                            our ENABLE_SOFTFLOAT define */
1747                         if (d != TYPE_VOID && IS_FLT_DBL_TYPE(d)) {
1748 #if 0 && !defined(NDEBUG)
1749                                 dolog("BUILTIN that returns float or double (%s.%s)", m->clazz->name->text, m->name->text);
1750 #endif
1751                                 /* we cannot use this macro, since it is not defined
1752                                    in ENABLE_SOFTFLOAT M_CAST_FLT_TO_INT_TYPED(d,
1753                                    REG_FRESULT, REG_RESULT_TYPED(d)); */
1754                                 if (IS_2_WORD_TYPE(d)) {
1755                                         DCD(0xed2d8102); /* stfd    f0, [sp, #-8]! */
1756                                         M_LDRD_UPDATE(REG_RESULT_PACKED, REG_SP, 8);
1757                                 } else {
1758                                         DCD(0xed2d0101); /* stfs    f0, [sp, #-4]!*/
1759                                         M_LDR_UPDATE(REG_RESULT, REG_SP, 4);
1760                                 }
1761                         }
1762 #endif
1763                         break;
1764
1765                 case ICMD_INVOKESPECIAL:
1766                         emit_nullpointer_check(cd, iptr, REG_A0);
1767                         /* fall through */
1768
1769                 case ICMD_INVOKESTATIC:
1770                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1771                                 um = iptr->sx.s23.s3.um;
1772                                 disp = dseg_add_unique_address(cd, NULL);
1773
1774                                 patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
1775                                                                         um, disp);
1776                         }
1777                         else {
1778                                 lm = iptr->sx.s23.s3.fmiref->p.method;
1779                                 disp = dseg_add_address(cd, lm->stubroutine);
1780                         }
1781
1782                         M_DSEG_LOAD(REG_PV, disp);            /* Pointer to method */
1783
1784                         /* generate the actual call */
1785
1786                         M_MOV(REG_LR, REG_PC);
1787                         M_MOV(REG_PC, REG_PV);
1788                         break;
1789
1790                 case ICMD_INVOKEVIRTUAL:
1791                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1792                                 um = iptr->sx.s23.s3.um;
1793                                 int32_t disp = dseg_add_unique_s4(cd, 0);
1794                                 patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, disp);
1795
1796                                 // The following instruction MUST NOT change a0 because of the implicit NPE check.
1797                                 M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
1798
1799                                 // Sanity check.
1800                                 assert(REG_ITMP1 != REG_METHODPTR);
1801                                 assert(REG_ITMP2 == REG_METHODPTR);
1802
1803                                 M_DSEG_LOAD(REG_ITMP1, disp);
1804                                 M_ADD(REG_METHODPTR, REG_METHODPTR, REG_ITMP1);
1805
1806                                 // This must be a load with displacement,
1807                                 // otherwise the JIT method address patching does
1808                                 // not work anymore (see md_jit_method_patch_address).
1809                                 M_LDR_INTERN(REG_PV, REG_METHODPTR, 0);
1810                         }
1811                         else {
1812                                 lm = iptr->sx.s23.s3.fmiref->p.method;
1813                                 s1 = OFFSET(vftbl_t, table[0]) + sizeof(methodptr) * lm->vftblindex;
1814
1815                                 // The following instruction MUST NOT change a0 because of the implicit NPE check.
1816                                 M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
1817                                 M_LDR(REG_PV, REG_METHODPTR, s1);
1818                         }
1819
1820                         // Generate the actual call.
1821                         M_MOV(REG_LR, REG_PC);
1822                         M_MOV(REG_PC, REG_PV);
1823                         break;
1824
1825                 case ICMD_INVOKEINTERFACE:
1826                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1827                                 um = iptr->sx.s23.s3.um;
1828                                 int32_t disp  = dseg_add_unique_s4(cd, 0);
1829                                 int32_t disp2 = dseg_add_unique_s4(cd, 0);
1830
1831                                 // XXX We need two displacements.
1832                                 assert(disp2 == disp - 4);
1833                                 patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, disp);
1834
1835                                 // The following instruction MUST NOT change a0 because of the implicit NPE check.
1836                                 M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
1837
1838                                 // Sanity check.
1839                                 assert(REG_ITMP1 != REG_METHODPTR);
1840                                 assert(REG_ITMP2 == REG_METHODPTR);
1841                                 assert(REG_ITMP3 != REG_METHODPTR);
1842
1843                                 M_DSEG_LOAD(REG_ITMP1, disp);
1844                                 M_LDR_REG(REG_METHODPTR, REG_METHODPTR, REG_ITMP1);
1845
1846                                 M_DSEG_LOAD(REG_ITMP3, disp2);
1847                                 M_ADD(REG_METHODPTR, REG_METHODPTR, REG_ITMP3);
1848
1849                                 // This must be a load with displacement,
1850                                 // otherwise the JIT method address patching does
1851                                 // not work anymore (see md_jit_method_patch_address).
1852                                 M_LDR_INTERN(REG_PV, REG_METHODPTR, 0);
1853                         }
1854                         else {
1855                                 lm = iptr->sx.s23.s3.fmiref->p.method;
1856                                 s1 = OFFSET(vftbl_t, interfacetable[0]) - sizeof(methodptr*) * lm->clazz->index;
1857                                 s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
1858
1859                                 // The following instruction MUST NOT change a0 because of the implicit NPE check.
1860                                 M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
1861                                 M_LDR(REG_METHODPTR, REG_METHODPTR, s1);
1862                                 M_LDR(REG_PV, REG_METHODPTR, s2);
1863                         }
1864
1865                         // Generate the actual call.
1866                         M_MOV(REG_LR, REG_PC);
1867                         M_MOV(REG_PC, REG_PV);
1868                         break;
1869
1870                 case ICMD_CHECKCAST:  /* ..., objectref ==> ..., objectref            */
1871
1872                         if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
1873                                 /* object type cast-check */
1874
1875                         classinfo *super;
1876                         s4         superindex;
1877
1878                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
1879                                 super      = NULL;
1880                                 superindex = 0;
1881                         }
1882                         else {
1883                                 super      = iptr->sx.s23.s3.c.cls;
1884                                 superindex = super->index;
1885                         }
1886
1887                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
1888
1889                         /* if class is not resolved, check which code to call */
1890
1891                         if (super == NULL) {
1892                                 M_TST(s1, s1);
1893                                 emit_label_beq(cd, BRANCH_LABEL_1);
1894
1895                                 disp = dseg_add_unique_s4(cd, 0); /* super->flags */
1896                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
1897                                                     iptr->sx.s23.s3.c.ref, disp);
1898
1899                                 M_DSEG_LOAD(REG_ITMP2, disp);
1900                                 disp = dseg_add_s4(cd, ACC_INTERFACE);
1901                                 M_DSEG_LOAD(REG_ITMP3, disp);
1902                                 M_TST(REG_ITMP2, REG_ITMP3);
1903                                 emit_label_beq(cd, BRANCH_LABEL_2);
1904                         }
1905
1906                         /* interface checkcast code */
1907
1908                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
1909                                 if ((super == NULL) || !IS_IMM(superindex)) {
1910                                         disp = dseg_add_unique_s4(cd, superindex);
1911                                 }
1912                                 if (super == NULL) {
1913                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_index,
1914                                                             iptr->sx.s23.s3.c.ref, disp);
1915                                 }
1916                                 else {
1917                                         M_TST(s1, s1);
1918                                         emit_label_beq(cd, BRANCH_LABEL_3);
1919                                 }
1920
1921                                 M_LDR_INTERN(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
1922                                 M_LDR_INTERN(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, interfacetablelength));
1923
1924                                 /* we put unresolved or non-immediate superindices onto dseg */
1925                                 if ((super == NULL) || !IS_IMM(superindex)) {
1926                                         /* disp was computed before we added the patcher */
1927                                         M_DSEG_LOAD(REG_ITMP2, disp);
1928                                         M_CMP(REG_ITMP3, REG_ITMP2);
1929                                 } else {
1930                                         assert(IS_IMM(superindex));
1931                                         M_CMP_IMM(REG_ITMP3, superindex);
1932                                 }
1933
1934                                 emit_classcast_check(cd, iptr, BRANCH_LE, REG_ITMP3, s1);
1935
1936                                 /* if we loaded the superindex out of the dseg above, we do
1937                                    things differently here! */
1938                                 if ((super == NULL) || !IS_IMM(superindex)) {
1939
1940                                         M_LDR_INTERN(REG_ITMP3, s1, OFFSET(java_object_t, vftbl));
1941
1942                                         /* this assumes something */
1943                                         assert(OFFSET(vftbl_t, interfacetable[0]) == 0);
1944
1945                                         /* this does: REG_ITMP3 - superindex * sizeof(methodptr*) */
1946                                         assert(sizeof(methodptr*) == 4);
1947                                         M_SUB(REG_ITMP2, REG_ITMP3, REG_LSL(REG_ITMP2, 2));
1948
1949                                         s2 = 0;
1950
1951                                 } else {
1952
1953                                         s2 = OFFSET(vftbl_t, interfacetable[0]) -
1954                                                                 superindex * sizeof(methodptr*);
1955
1956                                 }
1957
1958                                 M_LDR_INTERN(REG_ITMP3, REG_ITMP2, s2);
1959                                 M_TST(REG_ITMP3, REG_ITMP3);
1960                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_ITMP3, s1);
1961
1962                                 if (super == NULL)
1963                                         emit_label_br(cd, BRANCH_LABEL_4);
1964                                 else
1965                                         emit_label(cd, BRANCH_LABEL_3);
1966                         }
1967
1968                         /* class checkcast code */
1969
1970                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
1971                                 if (super == NULL) {
1972                                         emit_label(cd, BRANCH_LABEL_2);
1973
1974                                         disp = dseg_add_unique_address(cd, NULL);
1975
1976                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
1977                                                             iptr->sx.s23.s3.c.ref,
1978                                                                                 disp);
1979                                 }
1980                                 else {
1981                                         disp = dseg_add_address(cd, super->vftbl);
1982
1983                                         M_TST(s1, s1);
1984                                         emit_label_beq(cd, BRANCH_LABEL_5);
1985                                 }
1986
1987                                 // The following code checks whether object s is a subtype of class t.
1988                                 // Represents the following semantic:
1989                                 //    if (!fast_subtype_check(s->vftbl, t->vftbl)) throw;
1990
1991                                 M_LDR_INTERN(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
1992                                 M_DSEG_LOAD(REG_ITMP3, disp);
1993
1994                                 if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
1995                                         // Represents the following semantic:
1996                                         //    if (*(s->vftbl + t->vftbl->subtype_offset) == t->vftbl) good;
1997                                         // Preconditions:
1998                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
1999                                         M_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
2000                                         M_LDR_REG(REG_ITMP1, REG_ITMP2, REG_ITMP1);
2001                                         M_CMP(REG_ITMP1, REG_ITMP3);
2002                                         emit_load_s1(jd, iptr, REG_ITMP1);  /* reload s1, might have been destroyed */
2003                                         emit_label_beq(cd, BRANCH_LABEL_6);  /* good */
2004
2005                                         // Represents the following semantic:
2006                                         //    if (t->vftbl->subtype_offset != OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE])) throw;
2007                                         // Preconditions:
2008                                         //    REG_ITMP3==t->vftbl;
2009                                         if (super == NULL) {
2010                                                 M_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
2011                                                 M_CMP_IMM(REG_ITMP1, OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]));
2012                                                 emit_load_s1(jd, iptr, REG_ITMP1);  /* reload s1, might have been destroyed */
2013                                                 emit_classcast_check(cd, iptr, BRANCH_NE, 0, s1);  /* throw */
2014                                         }
2015
2016                                         // Represents the following semantic:
2017                                         //    if (s->vftbl->subtype_depth < t->vftbl->subtype_depth) throw;
2018                                         // Preconditions:
2019                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
2020                                         M_LDR_INTERN(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, subtype_depth));
2021                                         M_LDR_INTERN(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
2022                                         M_CMP(REG_ITMP1, REG_ITMP3);
2023                                         emit_load_s1(jd, iptr, REG_ITMP1);  /* reload s1, might have been destroyed */
2024                                         emit_classcast_check(cd, iptr, BRANCH_LT, 0, s1);  /* throw */
2025
2026                                         // Represents the following semantic:
2027                                         //    if (s->vftbl->subtype_overflow[t->vftbl->subtype_depth - DISPLAY_SIZE] != t->vftbl) throw;
2028                                         // Preconditions:
2029                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl->subtype_depth;
2030                                         M_LDR_INTERN(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
2031                                         M_ADD(REG_ITMP2, REG_ITMP2, REG_LSL(REG_ITMP3, 2));  /* REG_ITMP2 = REG_ITMP2 + 4 * REG_ITMP3 */
2032                                         M_LDR_INTERN(REG_ITMP2, REG_ITMP2, -DISPLAY_SIZE * SIZEOF_VOID_P);
2033                                         M_DSEG_LOAD(REG_ITMP3, disp);  /* reload REG_ITMP3, was destroyed */
2034                                         M_CMP(REG_ITMP2, REG_ITMP3);
2035                                         emit_classcast_check(cd, iptr, BRANCH_NE, 0, s1);  /* throw */
2036
2037                                         emit_label(cd, BRANCH_LABEL_6);
2038                                 }
2039                                 else {
2040                                         // Represents the following semantic:
2041                                         //    if (*(s->vftbl + t->vftbl->subtype_offset) != t->vftbl) throw;
2042                                         // Preconditions:
2043                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
2044                                         M_ALD(REG_ITMP2, REG_ITMP2, super->vftbl->subtype_offset);
2045                                         M_CMP(REG_ITMP2, REG_ITMP3);
2046                                         emit_classcast_check(cd, iptr, BRANCH_NE, 0, s1);
2047                                 }
2048
2049                                 if (super != NULL)
2050                                         emit_label(cd, BRANCH_LABEL_5);
2051                         }
2052
2053                         if (super == NULL) {
2054                                 emit_label(cd, BRANCH_LABEL_1);
2055                                 emit_label(cd, BRANCH_LABEL_4);
2056                         }
2057
2058                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
2059                         }
2060                         else {
2061                                 /* array type cast-check */
2062
2063                                 s1 = emit_load_s1(jd, iptr, REG_A0);
2064                                 M_INTMOVE(s1, REG_A0);
2065
2066                                 if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2067                                         disp = dseg_add_unique_address(cd, NULL);
2068
2069                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2070                                                                                 iptr->sx.s23.s3.c.ref,
2071                                                                                 disp);
2072                                 }
2073                                 else
2074                                         disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2075
2076                                 M_DSEG_LOAD(REG_A1, disp);
2077                                 disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
2078                                 M_DSEG_BRANCH(disp);
2079
2080                                 emit_recompute_pv(cd);
2081
2082                                 s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2083                                 M_TST(REG_RESULT, REG_RESULT);
2084                                 emit_classcast_check(cd, iptr, BRANCH_EQ, REG_RESULT, s1);
2085
2086                                 d = codegen_reg_of_dst(jd, iptr, s1);
2087                         }
2088
2089                         M_INTMOVE(s1, d);
2090                         emit_store_dst(jd, iptr, d);
2091                         break;
2092
2093                 case ICMD_INSTANCEOF: /* ..., objectref ==> ..., intresult            */
2094
2095                         {
2096                         classinfo *super;
2097                         s4         superindex;
2098
2099                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2100                                 super      = NULL;
2101                                 superindex = 0;
2102                         }
2103                         else {
2104                                 super      = iptr->sx.s23.s3.c.cls;
2105                                 superindex = super->index;
2106                         }
2107
2108                         s1 = emit_load_s1(jd, iptr, REG_ITMP1);
2109                         d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
2110
2111                         if (s1 == d) {
2112                                 M_MOV(REG_ITMP1, s1);
2113                                 s1 = REG_ITMP1;
2114                         }
2115
2116                         /* if class is not resolved, check which code to call */
2117
2118                         if (super == NULL) {
2119                                 M_EOR(d, d, d);
2120
2121                                 M_TST(s1, s1);
2122                                 emit_label_beq(cd, BRANCH_LABEL_1);
2123
2124                                 disp = dseg_add_unique_s4(cd, 0); /* super->flags */
2125                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
2126                                                     iptr->sx.s23.s3.c.ref, disp);
2127
2128                                 M_DSEG_LOAD(REG_ITMP2, disp);
2129                                 disp = dseg_add_s4(cd, ACC_INTERFACE);
2130                                 M_DSEG_LOAD(REG_ITMP3, disp);
2131                                 M_TST(REG_ITMP2, REG_ITMP3);
2132                                 emit_label_beq(cd, BRANCH_LABEL_2);
2133                         }
2134
2135                         /* interface checkcast code */
2136
2137                         if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
2138                                 if ((super == NULL) || !IS_IMM(superindex)) {
2139                                         disp = dseg_add_unique_s4(cd, superindex);
2140                                 }
2141                                 if (super == NULL) {
2142                                         /* If d == REG_ITMP2, then it's destroyed in check
2143                                            code above.  */
2144                                         if (d == REG_ITMP2)
2145                                                 M_EOR(d, d, d);
2146
2147                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_index,
2148                                                             iptr->sx.s23.s3.c.ref, disp);
2149                                 }
2150                                 else {
2151                                         M_EOR(d, d, d);
2152                                         M_TST(s1, s1);
2153                                         emit_label_beq(cd, BRANCH_LABEL_3);
2154                                 }
2155
2156                                 M_LDR_INTERN(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
2157                                 M_LDR_INTERN(REG_ITMP3,
2158                                                          REG_ITMP1, OFFSET(vftbl_t, interfacetablelength));
2159
2160                                 /* we put unresolved or non-immediate superindices onto dseg
2161                                    and do things slightly different */
2162                                 if ((super == NULL) || !IS_IMM(superindex)) {
2163                                         /* disp was computed before we added the patcher */
2164                                         M_DSEG_LOAD(REG_ITMP2, disp);
2165                                         M_CMP(REG_ITMP3, REG_ITMP2);
2166
2167                                         if (d == REG_ITMP2) {
2168                                                 M_EORLE(d, d, d);
2169                                                 M_BLE(4);
2170                                         } else {
2171                                                 M_BLE(3);
2172                                         }
2173
2174                                         /* this assumes something */
2175                                         assert(OFFSET(vftbl_t, interfacetable[0]) == 0);
2176
2177                                         /* this does: REG_ITMP3 - superindex * sizeof(methodptr*) */
2178                                         assert(sizeof(methodptr*) == 4);
2179                                         M_SUB(REG_ITMP1, REG_ITMP1, REG_LSL(REG_ITMP2, 2));
2180
2181                                         if (d == REG_ITMP2) {
2182                                                 M_EOR(d, d, d);
2183                                         }
2184
2185                                         s2 = 0;
2186
2187                                 } else {
2188                                         assert(IS_IMM(superindex));
2189                                         M_CMP_IMM(REG_ITMP3, superindex);
2190
2191                                         M_BLE(2);
2192
2193                                         s2 = OFFSET(vftbl_t, interfacetable[0]) -
2194                                                 superindex * sizeof(methodptr*);
2195
2196                                 }
2197
2198                                 M_LDR_INTERN(REG_ITMP3, REG_ITMP1, s2);
2199                                 M_TST(REG_ITMP3, REG_ITMP3);
2200                                 M_MOVNE_IMM(1, d);
2201
2202                                 if (super == NULL)
2203                                         emit_label_br(cd, BRANCH_LABEL_4);
2204                                 else
2205                                         emit_label(cd, BRANCH_LABEL_3);
2206                         }
2207
2208                         /* class checkcast code */
2209
2210                         if ((super == NULL) || !(super->flags & ACC_INTERFACE)) {
2211                                 if (super == NULL) {
2212                                         emit_label(cd, BRANCH_LABEL_2);
2213
2214                                         disp = dseg_add_unique_address(cd, NULL);
2215
2216                                         patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
2217                                                             iptr->sx.s23.s3.c.ref, disp);
2218                                 }
2219                                 else {
2220                                         disp = dseg_add_address(cd, super->vftbl);
2221
2222                                         M_EOR(d, d, d);
2223                                         M_TST(s1, s1);
2224                                         emit_label_beq(cd, BRANCH_LABEL_5);
2225                                 }
2226
2227                                 // The following code checks whether object s is a subtype of class t.
2228                                 // Represents the following semantic:
2229                                 //    fast_subtype_check(s->vftbl, t->vftbl));
2230
2231                                 M_LDR_INTERN(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
2232                                 M_DSEG_LOAD(REG_ITMP3, disp);
2233
2234                                 if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
2235                                         // Represents the following semantic:
2236                                         //    if (*(s->vftbl + t->vftbl->subtype_offset) == t->vftbl) true;
2237                                         // Preconditions:
2238                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
2239                                         M_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
2240                                         M_LDR_REG(REG_ITMP1, REG_ITMP2, REG_ITMP1);
2241                                         M_CMP(REG_ITMP1, REG_ITMP3);
2242                                         emit_label_beq(cd, BRANCH_LABEL_6);  /* true */
2243
2244                                         // Represents the following semantic:
2245                                         //    if (t->vftbl->subtype_offset != OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE])) false;
2246                                         // Preconditions:
2247                                         //    REG_ITMP3==t->vftbl;
2248                                         if (super == NULL) {
2249                                                 M_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
2250                                                 M_CMP_IMM(REG_ITMP1, OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]));
2251                                                 emit_label_bne(cd, BRANCH_LABEL_7);  /* false */
2252                                         }
2253
2254                                         // Represents the following semantic:
2255                                         //    if (s->vftbl->subtype_depth < t->vftbl->subtype_depth) false;
2256                                         // Preconditions:
2257                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
2258                                         M_LDR_INTERN(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, subtype_depth));
2259                                         M_LDR_INTERN(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
2260                                         M_CMP(REG_ITMP1, REG_ITMP3);
2261                                         emit_label_blt(cd, BRANCH_LABEL_8);  /* false */
2262
2263                                         // Represents the following semantic:
2264                                         //    if (s->vftbl->subtype_overflow[t->vftbl->subtype_depth - DISPLAY_SIZE] != t->vftbl) false;
2265                                         // Preconditions:
2266                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl->subtype_depth;
2267                                         M_LDR_INTERN(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
2268                                         M_ADD(REG_ITMP2, REG_ITMP2, REG_LSL(REG_ITMP3, 2));  /* REG_ITMP2 = REG_ITMP2 + 4 * REG_ITMP3 */
2269                                         M_LDR_INTERN(REG_ITMP2, REG_ITMP2, -DISPLAY_SIZE * SIZEOF_VOID_P);
2270                                         M_DSEG_LOAD(REG_ITMP3, disp);  /* reload REG_ITMP3, was destroyed */
2271                                         M_CMP(REG_ITMP2, REG_ITMP3);
2272
2273                                         emit_label(cd, BRANCH_LABEL_6);
2274                                         if (super == NULL)
2275                                                 emit_label(cd, BRANCH_LABEL_7);
2276                                         emit_label(cd, BRANCH_LABEL_8);
2277
2278                                         /* If d == REG_ITMP2, then it's destroyed */
2279                                         if (d == REG_ITMP2)
2280                                                 M_EOR(d, d, d);
2281                                         M_MOVEQ_IMM(1, d);
2282                                 }
2283                                 else {
2284                                         // Represents the following semantic:
2285                                         //    *(s->vftbl + t->vftbl->subtype_offset) == t->vftbl;
2286                                         // Preconditions:
2287                                         //    REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
2288                                         M_ALD(REG_ITMP2, REG_ITMP2, super->vftbl->subtype_offset);
2289                                         M_CMP(REG_ITMP2, REG_ITMP3);
2290                                         /* If d == REG_ITMP2, then it's destroyed */
2291                                         if (d == REG_ITMP2)
2292                                                 M_EOR(d, d, d);
2293                                         M_MOVEQ_IMM(1, d);
2294                                 }
2295
2296                                 if (super != NULL)
2297                                         emit_label(cd, BRANCH_LABEL_5);
2298                         }
2299
2300                         if (super == NULL) {
2301                                 emit_label(cd, BRANCH_LABEL_1);
2302                                 emit_label(cd, BRANCH_LABEL_4);
2303                         }
2304
2305                         }
2306
2307                         emit_store_dst(jd, iptr, d);
2308                         break;
2309
2310                 case ICMD_MULTIANEWARRAY:/* ..., cnt1, [cnt2, ...] ==> ..., arrayref  */
2311
2312                         /* copy sizes to stack if necessary  */
2313
2314                         MCODECHECK((iptr->s1.argcount << 1) + 64);
2315
2316                         for (s1 = iptr->s1.argcount; --s1 >= 0; ) {
2317
2318                                 var = VAR(iptr->sx.s23.s2.args[s1]);
2319
2320                                 /* copy SAVEDVAR sizes to stack */
2321
2322                                 if (!(var->flags & PREALLOC)) {
2323                                         s2 = emit_load(jd, iptr, var, REG_ITMP1);
2324                                         M_STR(s2, REG_SP, s1 * 4);
2325                                 }
2326                         }
2327
2328                         /* a0 = dimension count */
2329
2330                         assert(IS_IMM(iptr->s1.argcount));
2331                         M_MOV_IMM(REG_A0, iptr->s1.argcount);
2332
2333                         /* is patcher function set? */
2334
2335                         if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
2336                                 disp = dseg_add_unique_address(cd, NULL);
2337
2338                                 patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
2339                                                                         iptr->sx.s23.s3.c.ref, disp);
2340                         }
2341                         else
2342                                 disp = dseg_add_address(cd, iptr->sx.s23.s3.c.cls);
2343
2344                         /* a1 = arraydescriptor */
2345
2346                         M_DSEG_LOAD(REG_A1, disp);
2347
2348                         /* a2 = pointer to dimensions = stack pointer */
2349
2350                         M_INTMOVE(REG_SP, REG_A2);
2351
2352                         /* call builtin_multianewarray here */
2353
2354                         disp = dseg_add_functionptr(cd, BUILTIN_multianewarray);
2355                         M_DSEG_BRANCH(disp);
2356
2357                         /* recompute pv */
2358
2359                         emit_recompute_pv(cd);
2360
2361                         /* check for exception before result assignment */
2362
2363                         emit_exception_check(cd, iptr);
2364
2365                         /* get arrayref */
2366
2367                         d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
2368                         M_INTMOVE(REG_RESULT, d);
2369                         emit_store_dst(jd, iptr, d);
2370                         break;
2371
2372                 default:
2373                         vm_abort("Unknown ICMD %d during code generation", iptr->opc);
2374         } /* the big switch */
2375 }
2376
2377
2378 /* codegen_emit_stub_native ****************************************************
2379
2380    Emits a stub routine which calls a native method.
2381
2382 *******************************************************************************/
2383
2384 void codegen_emit_stub_native(jitdata *jd, methoddesc *nmd, functionptr f, int skipparams)
2385 {
2386         methodinfo  *m;
2387         codeinfo    *code;
2388         codegendata *cd;
2389         methoddesc  *md;
2390         s4           i, j;
2391         s4           t;
2392         int          s1, s2;
2393         int          disp;
2394
2395         /* get required compiler data */
2396
2397         m    = jd->m;
2398         code = jd->code;
2399         cd   = jd->cd;
2400
2401         /* initialize variables */
2402
2403         md = m->parseddesc;
2404
2405         /* calculate stackframe size */
2406
2407         cd->stackframesize =
2408                 1 +                                                /* return address  */
2409                 sizeof(stackframeinfo_t) / SIZEOF_VOID_P +         /* stackframeinfo  */
2410                 sizeof(localref_table) / SIZEOF_VOID_P +           /* localref_table  */
2411                 nmd->memuse;                                       /* stack arguments */
2412
2413         /* align stack to 8-byte */
2414
2415         cd->stackframesize = (cd->stackframesize + 1) & ~1;
2416
2417         /* create method header */
2418
2419         (void) dseg_add_unique_address(cd, code);              /* CodeinfoPointer */
2420         (void) dseg_add_unique_s4(cd, cd->stackframesize);     /* FrameSize       */
2421         (void) dseg_add_unique_s4(cd, 0);                      /* IsLeaf          */
2422         (void) dseg_add_unique_s4(cd, 0);                      /* IntSave         */
2423         (void) dseg_add_unique_s4(cd, 0);                      /* FltSave         */
2424
2425         /* generate stub code */
2426
2427         M_STMFD(1<<REG_LR, REG_SP);
2428         M_SUB_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize * 2 - 1);
2429
2430 #if defined(ENABLE_GC_CACAO)
2431         /* Save callee saved integer registers in stackframeinfo (GC may
2432            need to recover them during a collection). */
2433
2434         disp = cd->stackframesize - SIZEOF_VOID_P - sizeof(stackframeinfo_t) +
2435                 OFFSET(stackframeinfo_t, intregs);
2436
2437         for (i = 0; i < INT_SAV_CNT; i++)
2438                 M_STR_INTERN(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
2439 #endif
2440
2441         /* Save integer and float argument registers (these are 4
2442            registers, stack is 8-byte aligned). */
2443
2444         M_STMFD(BITMASK_ARGS, REG_SP);
2445         /* TODO: floating point */
2446
2447         /* create native stackframe info */
2448
2449         M_ADD_IMM(REG_A0, REG_SP, 4*4);
2450         M_MOV(REG_A1, REG_PV);
2451         disp = dseg_add_functionptr(cd, codegen_start_native_call);
2452         M_DSEG_BRANCH(disp);
2453
2454         /* recompute pv */
2455
2456         emit_recompute_pv(cd);
2457
2458         /* remember class argument */
2459
2460         if (m->flags & ACC_STATIC)
2461                 M_MOV(REG_ITMP3, REG_RESULT);
2462
2463         /* Restore integer and float argument registers (these are 4
2464            registers, stack is 8-byte aligned). */
2465
2466         M_LDMFD(BITMASK_ARGS, REG_SP);
2467         /* TODO: floating point */
2468
2469         /* copy or spill arguments to new locations */
2470         /* ATTENTION: the ARM has only integer argument registers! */
2471
2472         for (i = md->paramcount - 1, j = i + skipparams; i >= 0; i--, j--) {
2473                 t = md->paramtypes[i].type;
2474
2475                 if (!md->params[i].inmemory) {
2476                         s1 = md->params[i].regoff;
2477                         s2 = nmd->params[j].regoff;
2478
2479                         if (!nmd->params[j].inmemory) {
2480 #if !defined(__ARM_EABI__)
2481                                 SPLIT_OPEN(t, s2, REG_ITMP1);
2482 #endif
2483
2484                                 if (IS_2_WORD_TYPE(t))
2485                                         M_LNGMOVE(s1, s2);
2486                                 else
2487                                         M_INTMOVE(s1, s2);
2488
2489 #if !defined(__ARM_EABI__)
2490                                 SPLIT_STORE_AND_CLOSE(t, s2, 0);
2491 #endif
2492                         }
2493                         else {
2494                                 if (IS_2_WORD_TYPE(t))
2495                                         M_LST(s1, REG_SP, s2);
2496                                 else
2497                                         M_IST(s1, REG_SP, s2);
2498                         }
2499                 }
2500                 else {
2501                         s1 = md->params[i].regoff + cd->stackframesize * 8;
2502                         s2 = nmd->params[j].regoff;
2503
2504                         if (IS_2_WORD_TYPE(t)) {
2505                                 M_LLD(REG_ITMP12_PACKED, REG_SP, s1);
2506                                 M_LST(REG_ITMP12_PACKED, REG_SP, s2);
2507                         }
2508                         else {
2509                                 M_ILD(REG_ITMP1, REG_SP, s1);
2510                                 M_IST(REG_ITMP1, REG_SP, s2);
2511                         }
2512                 }
2513         }
2514
2515         /* Handle native Java methods. */
2516
2517         if (m->flags & ACC_NATIVE) {
2518                 /* put class into second argument register */
2519
2520                 if (m->flags & ACC_STATIC)
2521                         M_MOV(REG_A1, REG_ITMP3);
2522
2523                 /* put env into first argument register */
2524
2525                 disp = dseg_add_address(cd, VM_get_jnienv());
2526                 M_DSEG_LOAD(REG_A0, disp);
2527         }
2528
2529         /* Call the native function. */
2530
2531         disp = dseg_add_functionptr(cd, f);
2532         M_DSEG_BRANCH(disp);
2533
2534         /* recompute pv */
2535         /* TODO: this is only needed because of the tracer ... do we
2536            really need it? */
2537
2538         emit_recompute_pv(cd);
2539
2540 #if !defined(__SOFTFP__)
2541         /* TODO: this is only a hack, since we use R0/R1 for float return! */
2542         /* this depends on gcc; it is independent from our ENABLE_SOFTFLOAT define */
2543         if (md->returntype.type != TYPE_VOID && IS_FLT_DBL_TYPE(md->returntype.type)) {
2544 #if 0 && !defined(NDEBUG)
2545                 dolog("NATIVESTUB that returns float or double (%s.%s)", m->clazz->name->text, m->name->text);
2546 #endif
2547                 /* we cannot use this macro, since it is not defined in ENABLE_SOFTFLOAT */
2548                 /* M_CAST_FLT_TO_INT_TYPED(md->returntype.type, REG_FRESULT, REG_RESULT_TYPED(md->returntype.type)); */
2549                 if (IS_2_WORD_TYPE(md->returntype.type)) {
2550                         DCD(0xed2d8102); /* stfd    f0, [sp, #-8]! */
2551                         M_LDRD_UPDATE(REG_RESULT_PACKED, REG_SP, 8);
2552                 } else {
2553                         DCD(0xed2d0101); /* stfs    f0, [sp, #-4]!*/
2554                         M_LDR_UPDATE(REG_RESULT, REG_SP, 4);
2555                 }
2556         }
2557 #endif
2558
2559         /* remove native stackframe info */
2560         /* TODO: improve this store/load */
2561
2562         M_STMFD(BITMASK_RESULT, REG_SP);
2563
2564         M_ADD_IMM(REG_A0, REG_SP, 2*4);
2565         M_MOV(REG_A1, REG_PV);
2566         disp = dseg_add_functionptr(cd, codegen_finish_native_call);
2567         M_DSEG_BRANCH(disp);
2568         emit_recompute_pv(cd);
2569
2570         M_MOV(REG_ITMP1_XPTR, REG_RESULT);
2571         M_LDMFD(BITMASK_RESULT, REG_SP);
2572
2573 #if defined(ENABLE_GC_CACAO)
2574         /* restore callee saved int registers from stackframeinfo (GC might have  */
2575         /* modified them during a collection).                                    */
2576
2577         disp = cd->stackframesize - SIZEOF_VOID_P - sizeof(stackframeinfo_t) +
2578                 OFFSET(stackframeinfo_t, intregs);
2579
2580         for (i = 0; i < INT_SAV_CNT; i++)
2581                 M_LDR_INTERN(abi_registers_integer_saved[i], REG_SP, disp + i * 4);
2582 #endif
2583
2584         /* finish stub code, but do not yet return to caller */
2585
2586         M_ADD_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize * 2 - 1);
2587         M_LDMFD(1<<REG_LR, REG_SP);
2588
2589         /* check for exception */
2590
2591         M_TST(REG_ITMP1_XPTR, REG_ITMP1_XPTR);
2592         M_MOVEQ(REG_LR, REG_PC);            /* if no exception, return to caller  */
2593
2594         /* handle exception here */
2595
2596         M_SUB_IMM(REG_ITMP2_XPC, REG_LR, 4);/* move fault address into xpc        */
2597
2598         disp = dseg_add_functionptr(cd, asm_handle_nat_exception);
2599         M_DSEG_LOAD(REG_ITMP3, disp);       /* load asm exception handler address */
2600         M_MOV(REG_PC, REG_ITMP3);           /* jump to asm exception handler      */
2601 }
2602
2603
2604 /* asm_debug *******************************************************************
2605
2606    Lazy debugger!
2607
2608 *******************************************************************************/
2609
2610 void asm_debug(int a1, int a2, int a3, int a4)
2611 {
2612         printf("===> i am going to exit after this debugging message!\n");
2613         printf("got asm_debug(%p, %p, %p, %p)\n",(void*)a1,(void*)a2,(void*)a3,(void*)a4);
2614         vm_abort("leave you now");
2615 }
2616
2617
2618 /*
2619  * These are local overrides for various environment variables in Emacs.
2620  * Please do not remove this and leave it at the end of the file, where
2621  * Emacs will automagically detect them.
2622  * ---------------------------------------------------------------------
2623  * Local variables:
2624  * mode: c
2625  * indent-tabs-mode: t
2626  * c-basic-offset: 4
2627  * tab-width: 4
2628  * End:
2629  * vim:noexpandtab:sw=4:ts=4:
2630  */