src/vm/jit/arm/emit.c

   1 /* src/vm/jit/arm/emit.c - Arm code emitter functions
   2
   3    Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    $Id: emit.c 4398 2006-01-31 23:43:08Z twisti $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33
  34 #include "vm/types.h"
  35
  36 #include "md-abi.h"
  37
  38 #include "vm/jit/arm/codegen.h"
  39
  40 #include "mm/memory.h"
  41
  42 #if defined(ENABLE_THREADS)
  43 # include "threads/native/lock.h"
  44 #endif
  45
  46 #include "vm/builtin.h"
  47 #include "vm/exceptions.h"
  48 #include "vm/global.h"
  49
  50 #include "vm/jit/abi.h"
  51 #include "vm/jit/asmpart.h"
  52 #include "vm/jit/emit-common.h"
  53 #include "vm/jit/jit.h"
  54 #include "vm/jit/replace.h"
  55
  56 #include "toolbox/logging.h" /* XXX for debugging only */
  57
  58
  59 /* emit_load *******************************************************************
  60
  61    Emits a possible load of an operand.
  62
  63 *******************************************************************************/
  64
  65 s4 emit_load(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
  66 {
  67         codegendata  *cd;
  68         s4            disp;
  69         s4            reg;
  70
  71         /* get required compiler data */
  72
  73         cd = jd->cd;
  74
  75         if (src->flags & INMEMORY) {
  76                 COUNT_SPILLS;
  77
  78                 disp = src->vv.regoff * 4;
  79
  80 #if defined(ENABLE_SOFTFLOAT)
  81                 switch (src->type) {
  82                 case TYPE_INT:
  83                 case TYPE_FLT:
  84                 case TYPE_ADR:
  85                         M_ILD(tempreg, REG_SP, disp);
  86                         break;
  87                 case TYPE_LNG:
  88                 case TYPE_DBL:
  89                         M_LLD(tempreg, REG_SP, disp);
  90                         break;
  91                 default:
  92                         vm_abort("emit_load: unknown type %d", src->type);
  93                 }
  94 #else
  95                 switch (src->type) {
  96                 case TYPE_INT:
  97                 case TYPE_ADR:
  98                         M_ILD(tempreg, REG_SP, disp);
  99                         break;
 100                 case TYPE_LNG:
 101                         M_LLD(tempreg, REG_SP, disp);
 102                         break;
 103                 case TYPE_FLT:
 104                         M_FLD(tempreg, REG_SP, disp);
 105                         break;
 106                 case TYPE_DBL:
 107                         M_DLD(tempreg, REG_SP, disp);
 108                         break;
 109                 default:
 110                         vm_abort("emit_load: unknown type %d", src->type);
 111                 }
 112 #endif
 113
 114                 reg = tempreg;
 115         }
 116         else
 117                 reg = src->vv.regoff;
 118
 119         return reg;
 120 }
 121
 122
 123 /* emit_load_low ***************************************************************
 124
 125    Emits a possible load of the low 32-bits of a long source operand.
 126
 127 *******************************************************************************/
 128
 129 s4 emit_load_low(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
 130 {
 131         codegendata  *cd;
 132         s4            disp;
 133         s4            reg;
 134
 135         assert(src->type == TYPE_LNG);
 136
 137         /* get required compiler data */
 138
 139         cd = jd->cd;
 140
 141         if (src->flags & INMEMORY) {
 142                 COUNT_SPILLS;
 143
 144                 disp = src->vv.regoff * 4;
 145
 146 #if defined(__ARMEL__)
 147                 M_ILD(tempreg, REG_SP, disp);
 148 #else
 149                 M_ILD(tempreg, REG_SP, disp + 4);
 150 #endif
 151
 152                 reg = tempreg;
 153         }
 154         else
 155                 reg = GET_LOW_REG(src->vv.regoff);
 156
 157         return reg;
 158 }
 159
 160
 161 /* emit_load_high **************************************************************
 162
 163    Emits a possible load of the high 32-bits of a long source operand.
 164
 165 *******************************************************************************/
 166
 167 s4 emit_load_high(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
 168 {
 169         codegendata  *cd;
 170         s4            disp;
 171         s4            reg;
 172
 173         assert(src->type == TYPE_LNG);
 174
 175         /* get required compiler data */
 176
 177         cd = jd->cd;
 178
 179         if (src->flags & INMEMORY) {
 180                 COUNT_SPILLS;
 181
 182                 disp = src->vv.regoff * 4;
 183
 184 #if defined(__ARMEL__)
 185                 M_ILD(tempreg, REG_SP, disp + 4);
 186 #else
 187                 M_ILD(tempreg, REG_SP, disp);
 188 #endif
 189
 190                 reg = tempreg;
 191         }
 192         else
 193                 reg = GET_HIGH_REG(src->vv.regoff);
 194
 195         return reg;
 196 }
 197
 198
 199 /* emit_store ******************************************************************
 200
 201    Emits a possible store to a variable.
 202
 203 *******************************************************************************/
 204
 205 void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
 206 {
 207         codegendata  *cd;
 208         s4            disp;
 209
 210         /* get required compiler data */
 211
 212         cd = jd->cd;
 213
 214         if (dst->flags & INMEMORY) {
 215                 COUNT_SPILLS;
 216
 217                 disp = dst->vv.regoff * 4;
 218
 219 #if defined(ENABLE_SOFTFLOAT)
 220                 switch (dst->type) {
 221                 case TYPE_INT:
 222                 case TYPE_FLT:
 223                 case TYPE_ADR:
 224                         M_IST(d, REG_SP, disp);
 225                         break;
 226                 case TYPE_LNG:
 227                 case TYPE_DBL:
 228                         M_LST(d, REG_SP, disp);
 229                         break;
 230                 default:
 231                         vm_abort("emit_store: unknown type %d", dst->type);
 232                 }
 233 #else
 234                 switch (dst->type) {
 235                 case TYPE_INT:
 236                 case TYPE_ADR:
 237                         M_IST(d, REG_SP, disp);
 238                         break;
 239                 case TYPE_LNG:
 240                         M_LST(d, REG_SP, disp);
 241                         break;
 242                 case TYPE_FLT:
 243                         M_FST(d, REG_SP, disp);
 244                         break;
 245                 case TYPE_DBL:
 246                         M_DST(d, REG_SP, disp);
 247                         break;
 248                 default:
 249                         vm_abort("emit_store: unknown type %d", dst->type);
 250                 }
 251 #endif
 252         }
 253         else if (IS_LNG_TYPE(dst->type)) {
 254 #if defined(__ARMEL__)
 255                 assert(GET_HIGH_REG(dst->vv.regoff) != REG_SPLIT);
 256 #else
 257                 assert(GET_LOW_REG(dst->vv.regoff) != REG_SPLIT);
 258 #endif
 259         }
 260 }
 261
 262
 263 /* emit_copy *******************************************************************
 264
 265    Generates a register/memory to register/memory copy.
 266
 267 *******************************************************************************/
 268
 269 void emit_copy(jitdata *jd, instruction *iptr)
 270 {
 271         codegendata *cd;
 272         varinfo     *src;
 273         varinfo     *dst;
 274         s4           s1, d;
 275
 276         /* get required compiler data */
 277
 278         cd = jd->cd;
 279
 280         /* get source and destination variables */
 281
 282         src = VAROP(iptr->s1);
 283         dst = VAROP(iptr->dst);
 284
 285         /* XXX dummy call, removed me!!! */
 286         d = codegen_reg_of_var(iptr->opc, dst, REG_ITMP1);
 287
 288         if ((src->vv.regoff != dst->vv.regoff) ||
 289                 ((src->flags ^ dst->flags) & INMEMORY)) {
 290
 291                 if ((src->type == TYPE_RET) || (dst->type == TYPE_RET)) {
 292                         /* emit nothing, as the value won't be used anyway */
 293                         return;
 294                 }
 295
 296                 /* If one of the variables resides in memory, we can eliminate
 297                    the register move from/to the temporary register with the
 298                    order of getting the destination register and the load. */
 299
 300                 if (IS_INMEMORY(src->flags)) {
 301 #if !defined(ENABLE_SOFTFLOAT)
 302                         if (IS_FLT_DBL_TYPE(src->type))
 303                                 d = codegen_reg_of_var(iptr->opc, dst, REG_FTMP1);
 304                         else
 305 #endif
 306                         {
 307                                 if (IS_2_WORD_TYPE(src->type))
 308                                         d = codegen_reg_of_var(iptr->opc, dst, REG_ITMP12_PACKED);
 309                                 else
 310                                         d = codegen_reg_of_var(iptr->opc, dst, REG_ITMP1);
 311                         }
 312
 313                         s1 = emit_load(jd, iptr, src, d);
 314                 }
 315                 else {
 316 #if !defined(ENABLE_SOFTFLOAT)
 317                         if (IS_FLT_DBL_TYPE(src->type))
 318                                 s1 = emit_load(jd, iptr, src, REG_FTMP1);
 319                         else
 320 #endif
 321                         {
 322                                 if (IS_2_WORD_TYPE(src->type))
 323                                         s1 = emit_load(jd, iptr, src, REG_ITMP12_PACKED);
 324                                 else
 325                                         s1 = emit_load(jd, iptr, src, REG_ITMP1);
 326                         }
 327
 328                         d = codegen_reg_of_var(iptr->opc, dst, s1);
 329                 }
 330
 331                 if (s1 != d) {
 332 #if defined(ENABLE_SOFTFLOAT)
 333                         switch (src->type) {
 334                         case TYPE_INT:
 335                         case TYPE_FLT:
 336                         case TYPE_ADR:
 337                                 /* XXX grrrr, wrong direction! */
 338                                 M_MOV(d, s1);
 339                                 break;
 340                         case TYPE_LNG:
 341                         case TYPE_DBL:
 342                                 /* XXX grrrr, wrong direction! */
 343                                 M_MOV(GET_LOW_REG(d), GET_LOW_REG(s1));
 344                                 M_MOV(GET_HIGH_REG(d), GET_HIGH_REG(s1));
 345                                 break;
 346                         default:
 347                                 vm_abort("emit_copy: unknown type %d", src->type);
 348                         }
 349 #else
 350                         switch (src->type) {
 351                         case TYPE_INT:
 352                         case TYPE_ADR:
 353                                 /* XXX grrrr, wrong direction! */
 354                                 M_MOV(d, s1);
 355                                 break;
 356                         case TYPE_LNG:
 357                                 /* XXX grrrr, wrong direction! */
 358                                 M_MOV(GET_LOW_REG(d), GET_LOW_REG(s1));
 359                                 M_MOV(GET_HIGH_REG(d), GET_HIGH_REG(s1));
 360                                 break;
 361                         case TYPE_FLT:
 362                                 M_FMOV(s1, d);
 363                                 break;
 364                         case TYPE_DBL:
 365                                 M_DMOV(s1, d);
 366                                 break;
 367                         default:
 368                                 vm_abort("emit_copy: unknown type %d", src->type);
 369                         }
 370 #endif
 371                 }
 372
 373                 emit_store(jd, iptr, dst, d);
 374         }
 375 }
 376
 377
 378 /* emit_iconst *****************************************************************
 379
 380    XXX
 381
 382 *******************************************************************************/
 383
 384 void emit_iconst(codegendata *cd, s4 d, s4 value)
 385 {
 386         s4 disp;
 387
 388         if (IS_IMM(value))
 389                 M_MOV_IMM(d, value);
 390         else {
 391                 disp = dseg_add_s4(cd, value);
 392                 M_DSEG_LOAD(d, disp);
 393         }
 394 }
 395
 396
 397 /* emit_branch *****************************************************************
 398
 399    Emits the code for conditional and unconditional branchs.
 400
 401 *******************************************************************************/
 402
 403 void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
 404 {
 405         s4 checkdisp;
 406         s4 branchdisp;
 407
 408         /* calculate the different displacements */
 409
 410         checkdisp  = (disp - 8);
 411         branchdisp = (disp - 8) >> 2;
 412
 413         /* check which branch to generate */
 414
 415         if (condition == BRANCH_UNCONDITIONAL) {
 416                 /* check displacement for overflow */
 417
 418                 if ((checkdisp < (s4) 0xff000000) || (checkdisp > (s4) 0x00ffffff)) {
 419                         /* if the long-branches flag isn't set yet, do it */
 420
 421                         if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
 422                                 cd->flags |= (CODEGENDATA_FLAG_ERROR |
 423                                                           CODEGENDATA_FLAG_LONGBRANCHES);
 424                         }
 425
 426                         vm_abort("emit_branch: emit unconditional long-branch code");
 427                 }
 428                 else {
 429                         M_B(branchdisp);
 430                 }
 431         }
 432         else {
 433                 /* and displacement for overflow */
 434
 435                 if ((checkdisp < (s4) 0xff000000) || (checkdisp > (s4) 0x00ffffff)) {
 436                         /* if the long-branches flag isn't set yet, do it */
 437
 438                         if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
 439                                 cd->flags |= (CODEGENDATA_FLAG_ERROR |
 440                                                           CODEGENDATA_FLAG_LONGBRANCHES);
 441                         }
 442
 443                         vm_abort("emit_branch: emit conditional long-branch code");
 444                 }
 445                 else {
 446                         switch (condition) {
 447                         case BRANCH_EQ:
 448                                 M_BEQ(branchdisp);
 449                                 break;
 450                         case BRANCH_NE:
 451                                 M_BNE(branchdisp);
 452                                 break;
 453                         case BRANCH_LT:
 454                                 M_BLT(branchdisp);
 455                                 break;
 456                         case BRANCH_GE:
 457                                 M_BGE(branchdisp);
 458                                 break;
 459                         case BRANCH_GT:
 460                                 M_BGT(branchdisp);
 461                                 break;
 462                         case BRANCH_LE:
 463                                 M_BLE(branchdisp);
 464                                 break;
 465                         case BRANCH_UGT:
 466                                 M_BHI(branchdisp);
 467                                 break;
 468                         default:
 469                                 vm_abort("emit_branch: unknown condition %d", condition);
 470                         }
 471                 }
 472         }
 473 }
 474
 475
 476 /* emit_arithmetic_check *******************************************************
 477
 478    Emit an ArithmeticException check.
 479
 480 *******************************************************************************/
 481
 482 void emit_arithmetic_check(codegendata *cd, instruction *iptr, s4 reg)
 483 {
 484         if (INSTRUCTION_MUST_CHECK(iptr)) {
 485                 CHECK_INT_REG(reg);
 486                 M_TEQ_IMM(reg, 0);
 487                 M_TRAPEQ(0, EXCEPTION_HARDWARE_ARITHMETIC);
 488         }
 489 }
 490
 491
 492 /* emit_nullpointer_check ******************************************************
 493
 494    Emit a NullPointerException check.
 495
 496 *******************************************************************************/
 497
 498 void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
 499 {
 500         if (INSTRUCTION_MUST_CHECK(iptr)) {
 501                 M_TST(reg, reg);
 502                 M_TRAPEQ(0, EXCEPTION_HARDWARE_NULLPOINTER);
 503         }
 504 }
 505
 506 void emit_nullpointer_check_force(codegendata *cd, instruction *iptr, s4 reg)
 507 {
 508         M_TST(reg, reg);
 509         M_TRAPEQ(0, EXCEPTION_HARDWARE_NULLPOINTER);
 510 }
 511
 512
 513 /* emit_arrayindexoutofbounds_check ********************************************
 514
 515    Emit a ArrayIndexOutOfBoundsException check.
 516
 517 *******************************************************************************/
 518
 519 void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
 520 {
 521         if (INSTRUCTION_MUST_CHECK(iptr)) {
 522                 M_ILD_INTERN(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
 523                 M_CMP(s2, REG_ITMP3);
 524                 M_TRAPHS(s2, EXCEPTION_HARDWARE_ARRAYINDEXOUTOFBOUNDS);
 525         }
 526 }
 527
 528
 529 /* emit_classcast_check ********************************************************
 530
 531    Emit a ClassCastException check.
 532
 533 *******************************************************************************/
 534
 535 void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
 536 {
 537         if (INSTRUCTION_MUST_CHECK(iptr)) {
 538                 switch (condition) {
 539                 case BRANCH_EQ:
 540                         M_TRAPEQ(s1, EXCEPTION_HARDWARE_CLASSCAST);
 541                         break;
 542
 543                 case BRANCH_LE:
 544                         M_TRAPLE(s1, EXCEPTION_HARDWARE_CLASSCAST);
 545                         break;
 546
 547                 case BRANCH_UGT:
 548                         M_TRAPHI(s1, EXCEPTION_HARDWARE_CLASSCAST);
 549                         break;
 550
 551                 default:
 552                         vm_abort("emit_classcast_check: unknown condition %d", condition);
 553                 }
 554         }
 555 }
 556
 557 /* emit_exception_check ********************************************************
 558
 559    Emit an Exception check.
 560
 561 *******************************************************************************/
 562
 563 void emit_exception_check(codegendata *cd, instruction *iptr)
 564 {
 565         if (INSTRUCTION_MUST_CHECK(iptr)) {
 566                 M_TST(REG_RESULT, REG_RESULT);
 567                 M_TRAPEQ(0, EXCEPTION_HARDWARE_EXCEPTION);
 568         }
 569 }
 570
 571
 572 /* emit_patcher_stubs **********************************************************
 573
 574    Generates the code for the patcher stubs.
 575
 576 *******************************************************************************/
 577
 578 void emit_patcher_stubs(jitdata *jd)
 579 {
 580         codegendata *cd;
 581         patchref    *pref;
 582         u4           mcode;
 583         u1          *savedmcodeptr;
 584         u1          *tmpmcodeptr;
 585         s4           targetdisp;
 586         s4           disp;
 587
 588         /* get required compiler data */
 589
 590         cd = jd->cd;
 591
 592         /* generate patcher stub call code */
 593
 594         targetdisp = 0;
 595
 596         for (pref = cd->patchrefs; pref != NULL; pref = pref->next) {
 597                 /* check code segment size */
 598
 599                 MCODECHECK(100);
 600
 601                 /* Get machine code which is patched back in later. The
 602                    call is 1 instruction word long. */
 603
 604                 tmpmcodeptr = (u1 *) (cd->mcodebase + pref->branchpos);
 605
 606                 mcode = *((u4 *) tmpmcodeptr);
 607
 608                 /* Patch in the call to call the following code (done at
 609                    compile time). */
 610
 611                 savedmcodeptr = cd->mcodeptr;   /* save current mcodeptr              */
 612                 cd->mcodeptr  = tmpmcodeptr;    /* set mcodeptr to patch position     */
 613
 614                 disp = ((u4 *) savedmcodeptr) - (((u4 *) tmpmcodeptr) + 2);
 615                 M_B(disp);
 616
 617                 cd->mcodeptr = savedmcodeptr;   /* restore the current mcodeptr       */
 618
 619                 /* create stack frame (align stack to 8-byte) */
 620
 621                 M_SUB_IMM(REG_SP, REG_SP, 8 * 4);
 622
 623                 /* save itmp3 onto stack */
 624
 625                 M_STR_INTERN(REG_ITMP3, REG_SP, 6 * 4);
 626
 627                 /* calculate return address and move it onto stack */
 628                 /* ATTENTION: we can not use BL to branch to patcher stub,        */
 629                 /* ATTENTION: because we need to preserve LR for leaf methods     */
 630
 631                 disp = (s4) (((u4 *) cd->mcodeptr) - (((u4 *) tmpmcodeptr) + 1) + 2);
 632
 633                 M_SUB_IMM_EXT_MUL4(REG_ITMP3, REG_PC, disp);
 634                 M_STR_INTERN(REG_ITMP3, REG_SP, 4 * 4);
 635
 636                 /* move pointer to java_objectheader onto stack */
 637
 638 #if defined(ENABLE_THREADS)
 639                 /* order reversed because of data segment layout */
 640
 641                 (void) dseg_add_unique_address(cd, NULL);           /* flcword    */
 642                 (void) dseg_add_unique_address(cd, lock_get_initial_lock_word());
 643                 disp = dseg_add_unique_address(cd, NULL);           /* vftbl      */
 644
 645                 M_SUB_IMM_EXT_MUL4(REG_ITMP3, REG_PV, -disp / 4);
 646                 M_STR_INTERN(REG_ITMP3, REG_SP, 3 * 4);
 647 #else
 648                 M_EOR(REG_ITMP3, REG_ITMP3, REG_ITMP3);
 649                 M_STR_INTERN(REG_ITMP3, REG_SP, 3 * 4);
 650 #endif
 651
 652                 /* move machine code onto stack */
 653
 654                 disp = dseg_add_unique_s4(cd, mcode);
 655                 M_DSEG_LOAD(REG_ITMP3, disp);
 656                 M_STR_INTERN(REG_ITMP3, REG_SP, 2 * 4);
 657
 658                 /* move class/method/field reference onto stack */
 659
 660                 disp = dseg_add_unique_address(cd, pref->ref);
 661                 M_DSEG_LOAD(REG_ITMP3, disp);
 662                 M_STR_INTERN(REG_ITMP3, REG_SP, 1 * 4);
 663
 664                 /* move data segment displacement onto stack */
 665
 666                 disp = dseg_add_unique_s4(cd, pref->disp);
 667                 M_DSEG_LOAD(REG_ITMP3, disp);
 668                 M_STR_INTERN(REG_ITMP3, REG_SP, 5 * 4);
 669
 670                 /* move patcher function pointer onto stack */
 671
 672                 disp = dseg_add_functionptr(cd, pref->patcher);
 673                 M_DSEG_LOAD(REG_ITMP3, disp);
 674                 M_STR_INTERN(REG_ITMP3, REG_SP, 0 * 4);
 675
 676                 /* finally call the patcher via asm_patcher_wrapper */
 677                 /* ATTENTION: don't use REG_PV here, because some patchers need it */
 678
 679                 if (targetdisp == 0) {
 680                         targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
 681
 682                         disp = dseg_add_functionptr(cd, asm_patcher_wrapper);
 683                         /*M_DSEG_BRANCH_NOLINK(REG_PC, REG_PV, a);*/
 684                         /* TODO: this is only a hack */
 685                         M_DSEG_LOAD(REG_ITMP3, disp);
 686                         M_MOV(REG_PC, REG_ITMP3);
 687                 }
 688                 else {
 689                         disp = (((u4 *) cd->mcodebase) + targetdisp) -
 690                                 (((u4 *) cd->mcodeptr) + 2);
 691
 692                         M_B(disp);
 693                 }
 694         }
 695 }
 696
 697
 698 /* emit_replacement_stubs ******************************************************
 699
 700    Generates the code for the replacement stubs.
 701
 702 *******************************************************************************/
 703
 704 #if defined(ENABLE_REPLACEMENT)
 705 void emit_replacement_stubs(jitdata *jd)
 706 {
 707         codegendata *cd;
 708         codeinfo    *code;
 709         rplpoint    *rplp;
 710         u1          *savedmcodeptr;
 711         s4           disp;
 712         s4           i;
 713
 714         /* get required compiler data */
 715
 716         cd   = jd->cd;
 717         code = jd->code;
 718 }
 719 #endif /* defined(ENABLE_REPLACEMENT) */
 720
 721
 722 /* emit_verbosecall_enter ******************************************************
 723
 724    Generates the code for the call trace.
 725
 726 *******************************************************************************/
 727
 728 #if !defined(NDEBUG)
 729 void emit_verbosecall_enter(jitdata *jd)
 730 {
 731         methodinfo   *m;
 732         codegendata  *cd;
 733         registerdata *rd;
 734         methoddesc   *md;
 735         s4            stackframesize;
 736         s4            disp;
 737         s4            i, t, s1, s2;
 738
 739         /* get required compiler data */
 740
 741         m  = jd->m;
 742         cd = jd->cd;
 743         rd = jd->rd;
 744
 745         md = m->parseddesc;
 746
 747         /* stackframesize is changed below */
 748
 749         stackframesize = cd->stackframesize;
 750
 751         /* mark trace code */
 752
 753         M_NOP;
 754
 755         /* Save argument registers to stack (including LR and PV).  Keep
 756            stack 8-byte aligned. */
 757
 758         M_STMFD(BITMASK_ARGS | (1<<REG_LR) | (1<<REG_PV), REG_SP);
 759         M_SUB_IMM(REG_SP, REG_SP, (2 + 2 + 1 + 1) * 4); /* space for a3, a4 and m */
 760
 761         stackframesize += 6 + 2 + 2 + 1 + 1;
 762
 763         /* prepare args for tracer */
 764
 765         i = md->paramcount - 1;
 766
 767         if (i > 3)
 768                 i = 3;
 769
 770         for (; i >= 0; i--) {
 771                 t = md->paramtypes[i].type;
 772
 773                 /* load argument into register (s1) and make it of TYPE_LNG */
 774
 775                 if (!md->params[i].inmemory) {
 776                         s1 = md->params[i].regoff;
 777
 778                         if (!IS_2_WORD_TYPE(t)) {
 779                                 M_MOV_IMM(REG_ITMP1, 0);
 780                                 s1 = PACK_REGS(s1, REG_ITMP1);
 781                         }
 782                         else {
 783                                 SPLIT_OPEN(t, s1, REG_ITMP1);
 784                                 SPLIT_LOAD(t, s1, stackframesize);
 785                         }
 786                 }
 787                 else {
 788                         s1 = REG_ITMP12_PACKED;
 789                         s2 = md->params[i].regoff + stackframesize;
 790
 791                         if (IS_2_WORD_TYPE(t))
 792                                 M_LLD(s1, REG_SP, s2 * 4);
 793                         else {
 794                                 M_ILD(GET_LOW_REG(s1), REG_SP, s2 * 4);
 795                                 M_MOV_IMM(GET_HIGH_REG(s1), 0);
 796                         }
 797                 }
 798
 799                 /* place argument for tracer */
 800
 801                 if (i < 2) {
 802 #if defined(__ARMEL__)
 803                         s2 = PACK_REGS(abi_registers_integer_argument[i * 2],
 804                                                    abi_registers_integer_argument[i * 2 + 1]);
 805 #else /* defined(__ARMEB__) */
 806                         s2 = PACK_REGS(abi_registers_integer_argument[i * 2 + 1],
 807                                                    abi_registers_integer_argument[i * 2]);
 808 #endif
 809                         M_LNGMOVE(s1, s2);
 810                 }
 811                 else {
 812                         s2 = (i - 2) * 2;
 813                         M_LST(s1, REG_SP, s2 * 4);
 814                 }
 815         }
 816
 817         /* prepare methodinfo pointer for tracer */
 818
 819         disp = dseg_add_address(cd, m);
 820         M_DSEG_LOAD(REG_ITMP1, disp);
 821         M_STR_INTERN(REG_ITMP1, REG_SP, 16);
 822
 823         /* call tracer here (we use a long branch) */
 824
 825         M_LONGBRANCH(builtin_verbosecall_enter);
 826
 827         /* Restore argument registers from stack.  Keep stack 8-byte
 828            aligned. */
 829
 830         M_ADD_IMM(REG_SP, REG_SP, (2 + 2 + 1 + 1) * 4);    /* free argument stack */
 831         M_LDMFD(BITMASK_ARGS | (1<<REG_LR) | (1<<REG_PV), REG_SP);
 832
 833         /* mark trace code */
 834
 835         M_NOP;
 836 }
 837 #endif /* !defined(NDEBUG) */
 838
 839
 840 /* emit_verbosecall_exit *******************************************************
 841
 842    Generates the code for the call trace.
 843
 844    void builtin_verbosecall_exit(s8 l, double d, float f, methodinfo *m);
 845
 846 *******************************************************************************/
 847
 848 #if !defined(NDEBUG)
 849 void emit_verbosecall_exit(jitdata *jd)
 850 {
 851         methodinfo   *m;
 852         codegendata  *cd;
 853         registerdata *rd;
 854         methoddesc   *md;
 855         s4            disp;
 856
 857         /* get required compiler data */
 858
 859         m  = jd->m;
 860         cd = jd->cd;
 861         rd = jd->rd;
 862
 863         md = m->parseddesc;
 864
 865         /* mark trace code */
 866
 867         M_NOP;
 868
 869         /* Keep stack 8-byte aligned. */
 870
 871         M_STMFD(BITMASK_RESULT | (1<<REG_LR) | (1<<REG_PV), REG_SP);
 872         M_SUB_IMM(REG_SP, REG_SP, (1 + 1) * 4);              /* space for f and m */
 873
 874         switch (md->returntype.type) {
 875         case TYPE_ADR:
 876         case TYPE_INT:
 877                 M_INTMOVE(REG_RESULT, GET_LOW_REG(REG_A0_A1_PACKED));
 878                 M_MOV_IMM(GET_HIGH_REG(REG_A0_A1_PACKED), 0);
 879                 break;
 880
 881         case TYPE_LNG:
 882                 M_LNGMOVE(REG_RESULT_PACKED, REG_A0_A1_PACKED);
 883                 break;
 884
 885         case TYPE_FLT:
 886                 M_IST(REG_RESULT, REG_SP, 0 * 4);
 887                 break;
 888
 889         case TYPE_DBL:
 890                 M_LNGMOVE(REG_RESULT_PACKED, REG_A2_A3_PACKED);
 891                 break;
 892         }
 893
 894         disp = dseg_add_address(cd, m);
 895         M_DSEG_LOAD(REG_ITMP1, disp);
 896         M_AST(REG_ITMP1, REG_SP, 1 * 4);
 897         M_LONGBRANCH(builtin_verbosecall_exit);
 898
 899         /* Keep stack 8-byte aligned. */
 900
 901         M_ADD_IMM(REG_SP, REG_SP, (1 + 1) * 4);            /* free argument stack */
 902         M_LDMFD(BITMASK_RESULT | (1<<REG_LR) | (1<<REG_PV), REG_SP);
 903
 904         /* mark trace code */
 905
 906         M_NOP;
 907 }
 908 #endif /* !defined(NDEBUG) */
 909
 910
 911 /*
 912  * These are local overrides for various environment variables in Emacs.
 913  * Please do not remove this and leave it at the end of the file, where
 914  * Emacs will automagically detect them.
 915  * ---------------------------------------------------------------------
 916  * Local variables:
 917  * mode: c
 918  * indent-tabs-mode: t
 919  * c-basic-offset: 4
 920  * tab-width: 4
 921  * End:
 922  * vim:noexpandtab:sw=4:ts=4:
 923  */