src/vm/jit/powerpc/emit.c

   1 /* src/vm/jit/powerpc/emit.c - PowerPC 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 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31 #include <stdint.h>
  32
  33 #include "vm/types.h"
  34
  35 #include "md-abi.h"
  36
  37 #include "vm/jit/powerpc/codegen.h"
  38
  39 #include "mm/memory.h"
  40
  41 #include "threads/lock-common.h"
  42
  43 #include "vm/builtin.h"
  44 #include "vm/exceptions.h"
  45
  46 #include "vm/jit/abi.h"
  47 #include "vm/jit/asmpart.h"
  48 #include "vm/jit/codegen-common.h"
  49 #include "vm/jit/dseg.h"
  50 #include "vm/jit/emit-common.h"
  51 #include "vm/jit/jit.h"
  52 #include "vm/jit/replace.h"
  53 #include "vm/jit/trace.h"
  54
  55 #include "vmcore/options.h"
  56
  57
  58 /* emit_load *******************************************************************
  59
  60    Emits a possible load of an operand.
  61
  62 *******************************************************************************/
  63
  64 s4 emit_load(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
  65 {
  66         codegendata *cd;
  67         s4           disp;
  68         s4           reg;
  69
  70         /* get required compiler data */
  71
  72         cd = jd->cd;
  73
  74         if (IS_INMEMORY(src->flags)) {
  75                 COUNT_SPILLS;
  76
  77                 disp = src->vv.regoff;
  78
  79                 switch (src->type) {
  80                 case TYPE_INT:
  81                 case TYPE_ADR:
  82                         M_ILD(tempreg, REG_SP, disp);
  83                         break;
  84                 case TYPE_LNG:
  85                         M_LLD(tempreg, REG_SP, disp);
  86                         break;
  87                 case TYPE_FLT:
  88                 case TYPE_DBL:
  89                         M_DLD(tempreg, REG_SP, disp);
  90                         break;
  91                 default:
  92                         vm_abort("emit_load: unknown type %d", src->type);
  93                 }
  94
  95                 reg = tempreg;
  96         }
  97         else
  98                 reg = src->vv.regoff;
  99
 100         return reg;
 101 }
 102
 103
 104 /* emit_load_low ***************************************************************
 105
 106    Emits a possible load of the low 32-bits of an operand.
 107
 108 *******************************************************************************/
 109
 110 s4 emit_load_low(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
 111 {
 112         codegendata  *cd;
 113         s4            disp;
 114         s4            reg;
 115
 116         assert(src->type == TYPE_LNG);
 117
 118         /* get required compiler data */
 119
 120         cd = jd->cd;
 121
 122         if (IS_INMEMORY(src->flags)) {
 123                 COUNT_SPILLS;
 124
 125                 disp = src->vv.regoff;
 126
 127                 M_ILD(tempreg, REG_SP, disp + 4);
 128
 129                 reg = tempreg;
 130         }
 131         else
 132                 reg = GET_LOW_REG(src->vv.regoff);
 133
 134         return reg;
 135 }
 136
 137
 138 /* emit_load_high **************************************************************
 139
 140    Emits a possible load of the high 32-bits of an operand.
 141
 142 *******************************************************************************/
 143
 144 s4 emit_load_high(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
 145 {
 146         codegendata  *cd;
 147         s4            disp;
 148         s4            reg;
 149
 150         assert(src->type == TYPE_LNG);
 151
 152         /* get required compiler data */
 153
 154         cd = jd->cd;
 155
 156         if (IS_INMEMORY(src->flags)) {
 157                 COUNT_SPILLS;
 158
 159                 disp = src->vv.regoff;
 160
 161                 M_ILD(tempreg, REG_SP, disp);
 162
 163                 reg = tempreg;
 164         }
 165         else
 166                 reg = GET_HIGH_REG(src->vv.regoff);
 167
 168         return reg;
 169 }
 170
 171
 172 /* emit_store ******************************************************************
 173
 174    Emit a possible store for the given variable.
 175
 176 *******************************************************************************/
 177
 178 void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
 179 {
 180         codegendata *cd;
 181         s4           disp;
 182
 183         /* get required compiler data */
 184
 185         cd = jd->cd;
 186
 187         if (IS_INMEMORY(dst->flags)) {
 188                 COUNT_SPILLS;
 189
 190                 disp = dst->vv.regoff;
 191
 192                 switch (dst->type) {
 193                 case TYPE_INT:
 194                 case TYPE_ADR:
 195                         M_IST(d, REG_SP, disp);
 196                         break;
 197                 case TYPE_LNG:
 198                         M_LST(d, REG_SP, disp);
 199                         break;
 200                 case TYPE_FLT:
 201                 case TYPE_DBL:
 202                         M_DST(d, REG_SP, disp);
 203                         break;
 204                 default:
 205                         vm_abort("emit_store: unknown type %d", dst->type);
 206                 }
 207         }
 208 }
 209
 210
 211 /* emit_copy *******************************************************************
 212
 213    Generates a register/memory to register/memory copy.
 214
 215 *******************************************************************************/
 216
 217 void emit_copy(jitdata *jd, instruction *iptr)
 218 {
 219         codegendata *cd;
 220         varinfo     *src;
 221         varinfo     *dst;
 222         s4           s1, d;
 223
 224         /* get required compiler data */
 225
 226         cd = jd->cd;
 227
 228         /* get source and destination variables */
 229
 230         src = VAROP(iptr->s1);
 231         dst = VAROP(iptr->dst);
 232
 233         if ((src->vv.regoff != dst->vv.regoff) ||
 234                 (IS_INMEMORY(src->flags ^ dst->flags))) {
 235
 236                 if ((src->type == TYPE_RET) || (dst->type == TYPE_RET)) {
 237                         /* emit nothing, as the value won't be used anyway */
 238                         return;
 239                 }
 240
 241                 /* If one of the variables resides in memory, we can eliminate
 242                    the register move from/to the temporary register with the
 243                    order of getting the destination register and the load. */
 244
 245                 if (IS_INMEMORY(src->flags)) {
 246                         if (IS_LNG_TYPE(src->type))
 247                                 d = codegen_reg_of_var(iptr->opc, dst, REG_ITMP12_PACKED);
 248                         else
 249                                 d = codegen_reg_of_var(iptr->opc, dst, REG_IFTMP);
 250
 251                         s1 = emit_load(jd, iptr, src, d);
 252                 }
 253                 else {
 254                         if (IS_LNG_TYPE(src->type))
 255                                 s1 = emit_load(jd, iptr, src, REG_ITMP12_PACKED);
 256                         else
 257                                 s1 = emit_load(jd, iptr, src, REG_IFTMP);
 258
 259                         d = codegen_reg_of_var(iptr->opc, dst, s1);
 260                 }
 261
 262                 if (s1 != d) {
 263                         switch (src->type) {
 264                         case TYPE_INT:
 265                         case TYPE_ADR:
 266                                 M_MOV(s1, d);
 267                                 break;
 268                         case TYPE_LNG:
 269                                 M_MOV(GET_LOW_REG(s1), GET_LOW_REG(d));
 270                                 M_MOV(GET_HIGH_REG(s1), GET_HIGH_REG(d));
 271                                 break;
 272                         case TYPE_FLT:
 273                         case TYPE_DBL:
 274                                 M_FMOV(s1, d);
 275                                 break;
 276                         default:
 277                                 vm_abort("emit_copy: unknown type %d", src->type);
 278                         }
 279                 }
 280
 281                 emit_store(jd, iptr, dst, d);
 282         }
 283 }
 284
 285
 286 /* emit_iconst *****************************************************************
 287
 288    XXX
 289
 290 *******************************************************************************/
 291
 292 void emit_iconst(codegendata *cd, s4 d, s4 value)
 293 {
 294         s4 disp;
 295
 296         if ((value >= -32768) && (value <= 32767))
 297                 M_LDA_INTERN(d, REG_ZERO, value);
 298         else {
 299                 disp = dseg_add_s4(cd, value);
 300                 M_ILD(d, REG_PV, disp);
 301         }
 302 }
 303
 304
 305 /* emit_branch *****************************************************************
 306
 307    Emits the code for conditional and unconditional branchs.
 308
 309 *******************************************************************************/
 310
 311 void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
 312 {
 313         s4 checkdisp;
 314         s4 branchdisp;
 315
 316         /* calculate the different displacements */
 317
 318         checkdisp  =  disp + 4;
 319         branchdisp = (disp - 4) >> 2;
 320
 321         /* check which branch to generate */
 322
 323         if (condition == BRANCH_UNCONDITIONAL) {
 324                 /* check displacement for overflow */
 325
 326                 if ((checkdisp < (s4) 0xfe000000) || (checkdisp > (s4) 0x01fffffc)) {
 327                         /* if the long-branches flag isn't set yet, do it */
 328
 329                         if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
 330                                 cd->flags |= (CODEGENDATA_FLAG_ERROR |
 331                                                           CODEGENDATA_FLAG_LONGBRANCHES);
 332                         }
 333
 334                         vm_abort("emit_branch: emit unconditional long-branch code");
 335                 }
 336                 else {
 337                         M_BR(branchdisp);
 338                 }
 339         }
 340         else {
 341                 /* and displacement for overflow */
 342
 343                 if ((checkdisp < (s4) 0xffff8000) || (checkdisp > (s4) 0x00007fff)) {
 344                         /* if the long-branches flag isn't set yet, do it */
 345
 346                         if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
 347                                 cd->flags |= (CODEGENDATA_FLAG_ERROR |
 348                                                           CODEGENDATA_FLAG_LONGBRANCHES);
 349                         }
 350
 351                         switch (condition) {
 352                         case BRANCH_EQ:
 353                                 M_BNE(1);
 354                                 M_BR(branchdisp);
 355                                 break;
 356                         case BRANCH_NE:
 357                                 M_BEQ(1);
 358                                 M_BR(branchdisp);
 359                                 break;
 360                         case BRANCH_LT:
 361                                 M_BGE(1);
 362                                 M_BR(branchdisp);
 363                                 break;
 364                         case BRANCH_GE:
 365                                 M_BLT(1);
 366                                 M_BR(branchdisp);
 367                                 break;
 368                         case BRANCH_GT:
 369                                 M_BLE(1);
 370                                 M_BR(branchdisp);
 371                                 break;
 372                         case BRANCH_LE:
 373                                 M_BGT(1);
 374                                 M_BR(branchdisp);
 375                                 break;
 376                         case BRANCH_NAN:
 377                                 vm_abort("emit_branch: long BRANCH_NAN");
 378                                 break;
 379                         default:
 380                                 vm_abort("emit_branch: unknown condition %d", condition);
 381                         }
 382                 }
 383                 else {
 384                         switch (condition) {
 385                         case BRANCH_EQ:
 386                                 M_BEQ(branchdisp);
 387                                 break;
 388                         case BRANCH_NE:
 389                                 M_BNE(branchdisp);
 390                                 break;
 391                         case BRANCH_LT:
 392                                 M_BLT(branchdisp);
 393                                 break;
 394                         case BRANCH_GE:
 395                                 M_BGE(branchdisp);
 396                                 break;
 397                         case BRANCH_GT:
 398                                 M_BGT(branchdisp);
 399                                 break;
 400                         case BRANCH_LE:
 401                                 M_BLE(branchdisp);
 402                                 break;
 403                         case BRANCH_NAN:
 404                                 M_BNAN(branchdisp);
 405                                 break;
 406                         default:
 407                                 vm_abort("emit_branch: unknown condition %d", condition);
 408                         }
 409                 }
 410         }
 411 }
 412
 413
 414 /* emit_arithmetic_check *******************************************************
 415
 416    Emit an ArithmeticException check.
 417
 418 *******************************************************************************/
 419
 420 void emit_arithmetic_check(codegendata *cd, instruction *iptr, s4 reg)
 421 {
 422         if (INSTRUCTION_MUST_CHECK(iptr)) {
 423                 M_TST(reg);
 424                 M_BNE(1);
 425                 M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_ARITHMETIC);
 426         }
 427 }
 428
 429
 430 /* emit_arrayindexoutofbounds_check ********************************************
 431
 432    Emit a ArrayIndexOutOfBoundsException check.
 433
 434 *******************************************************************************/
 435
 436 void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
 437 {
 438         if (INSTRUCTION_MUST_CHECK(iptr)) {
 439                 M_ILD(REG_ITMP3, s1, OFFSET(java_array_t, size));
 440                 M_TRAPGEU(s2, REG_ITMP3);
 441         }
 442 }
 443
 444
 445 /* emit_arraystore_check *******************************************************
 446
 447    Emit an ArrayStoreException check.
 448
 449 *******************************************************************************/
 450
 451 void emit_arraystore_check(codegendata *cd, instruction *iptr)
 452 {
 453         if (INSTRUCTION_MUST_CHECK(iptr)) {
 454                 M_TST(REG_RESULT);
 455                 M_BNE(1);
 456                 M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_ARRAYSTORE);
 457         }
 458 }
 459
 460
 461 /* emit_classcast_check ********************************************************
 462
 463    Emit a ClassCastException check.
 464
 465 *******************************************************************************/
 466
 467 void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
 468 {
 469         if (INSTRUCTION_MUST_CHECK(iptr)) {
 470                 switch (condition) {
 471                 case BRANCH_LE:
 472                         M_BGT(1);
 473                         break;
 474                 case BRANCH_EQ:
 475                         M_BNE(1);
 476                         break;
 477                 case BRANCH_GT:
 478                         M_BLE(1);
 479                         break;
 480                 default:
 481                         vm_abort("emit_classcast_check: unknown condition %d", condition);
 482                 }
 483                 M_ALD_INTERN(s1, REG_ZERO, EXCEPTION_HARDWARE_CLASSCAST);
 484         }
 485 }
 486
 487
 488 /* emit_nullpointer_check ******************************************************
 489
 490    Emit a NullPointerException check.
 491
 492 *******************************************************************************/
 493
 494 void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
 495 {
 496         if (INSTRUCTION_MUST_CHECK(iptr)) {
 497                 M_TST(reg);
 498                 M_BNE(1);
 499                 M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
 500         }
 501 }
 502
 503
 504 /* emit_exception_check ********************************************************
 505
 506    Emit an Exception check.
 507
 508 *******************************************************************************/
 509
 510 void emit_exception_check(codegendata *cd, instruction *iptr)
 511 {
 512         if (INSTRUCTION_MUST_CHECK(iptr)) {
 513                 M_TST(REG_RESULT);
 514                 M_BNE(1);
 515                 M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_EXCEPTION);
 516         }
 517 }
 518
 519
 520 /* emit_trap *******************************************************************
 521
 522    Emit a trap instruction and return the original machine code.
 523
 524 *******************************************************************************/
 525
 526 uint32_t emit_trap(codegendata *cd)
 527 {
 528         uint32_t mcode;
 529
 530         /* Get machine code which is patched back in later. The
 531            trap is 1 instruction word long. */
 532
 533         mcode = *((u4 *) cd->mcodeptr);
 534
 535         M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_PATCHER);
 536
 537         return mcode;
 538 }
 539
 540
 541 /* emit_verbosecall_enter ******************************************************
 542
 543    Generates the code for the call trace.
 544
 545 *******************************************************************************/
 546
 547 void emit_verbosecall_enter(jitdata *jd)
 548 {
 549 #if !defined(NDEBUG)
 550         methodinfo   *m;
 551         codegendata  *cd;
 552         registerdata *rd;
 553         methoddesc   *md;
 554         int32_t       disp;
 555         int32_t       i;
 556         int32_t       s, d;
 557
 558         if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
 559                 return;
 560
 561         /* get required compiler data */
 562
 563         m  = jd->m;
 564         cd = jd->cd;
 565         rd = jd->rd;
 566
 567         md = m->parseddesc;
 568
 569         /* mark trace code */
 570
 571         M_NOP;
 572
 573         /* On Darwin we need to allocate an additional 3*4 bytes of stack
 574            for the arguments to trace_java_call_enter, we make it 2*8. */
 575
 576         M_MFLR(REG_ZERO);
 577         M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 578         M_STWU(REG_SP, REG_SP, -(LA_SIZE + (2 + ARG_CNT + TMP_CNT) * 8));
 579
 580         /* save argument registers */
 581
 582         for (i = 0; i < md->paramcount; i++) {
 583                 if (!md->params[i].inmemory) {
 584                         s = md->params[i].regoff;
 585                         d = LA_SIZE + (i + 2) * 8;
 586
 587                         switch (md->paramtypes[i].type) {
 588                         case TYPE_INT:
 589                         case TYPE_ADR:
 590                                 M_IST(s, REG_SP, d);
 591                                 break;
 592                         case TYPE_LNG:
 593                                 M_LST(s, REG_SP, d);
 594                                 break;
 595                         case TYPE_FLT:
 596                                 M_FST(s, REG_SP, d);
 597                                 break;
 598                         case TYPE_DBL:
 599                                 M_DST(s, REG_SP, d);
 600                                 break;
 601                         }
 602                 }
 603         }
 604
 605         /* pass methodinfo and pointers to the tracer function */
 606
 607         disp = dseg_add_address(cd, m);
 608         M_ALD(REG_A0, REG_PV, disp);
 609         M_AADD_IMM(REG_SP, LA_SIZE + 2 * 8, REG_A1);
 610         M_AADD_IMM(REG_SP, LA_SIZE + (2 + ARG_CNT + TMP_CNT + cd->stackframesize) * 8, REG_A2);
 611
 612         disp = dseg_add_functionptr(cd, trace_java_call_enter);
 613         M_ALD(REG_ITMP2, REG_PV, disp);
 614         M_MTCTR(REG_ITMP2);
 615         M_JSR;
 616
 617         /* restore argument registers */
 618
 619         for (i = 0; i < md->paramcount; i++) {
 620                 if (!md->params[i].inmemory) {
 621                         s = LA_SIZE + (i + 2) * 8;
 622                         d = md->params[i].regoff;
 623
 624                         switch (md->paramtypes[i].type) {
 625                         case TYPE_INT:
 626                         case TYPE_ADR:
 627                                 M_ILD(d, REG_SP, s);
 628                                 break;
 629                         case TYPE_LNG:
 630                                 M_LLD(d, REG_SP, s);
 631                                 break;
 632                         case TYPE_FLT:
 633                                 M_FLD(d, REG_SP, s);
 634                                 break;
 635                         case TYPE_DBL:
 636                                 M_DLD(d, REG_SP, s);
 637                                 break;
 638                         }
 639                 }
 640         }
 641
 642         M_ALD(REG_ZERO, REG_SP, LA_SIZE + (2 + ARG_CNT + TMP_CNT) * 8 + LA_LR_OFFSET);
 643         M_MTLR(REG_ZERO);
 644         M_LDA(REG_SP, REG_SP, LA_SIZE + (2 + ARG_CNT + TMP_CNT) * 8);
 645
 646         /* mark trace code */
 647
 648         M_NOP;
 649 #endif /* !defined(NDEBUG) */
 650 }
 651
 652
 653 /* emit_verbosecall_exit *******************************************************
 654
 655    Generates the code for the call trace.
 656
 657    void builtin_verbosecall_exit(s8 l, double d, float f, methodinfo *m);
 658
 659 *******************************************************************************/
 660
 661 void emit_verbosecall_exit(jitdata *jd)
 662 {
 663 #if !defined(NDEBUG)
 664         methodinfo   *m;
 665         codegendata  *cd;
 666         registerdata *rd;
 667         methoddesc   *md;
 668         s4            disp;
 669
 670         if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
 671                 return;
 672
 673         /* get required compiler data */
 674
 675         m  = jd->m;
 676         cd = jd->cd;
 677         rd = jd->rd;
 678
 679         md = m->parseddesc;
 680
 681         /* mark trace code */
 682
 683         M_NOP;
 684
 685         /* On Darwin we need to allocate an additional 2*4 bytes of stack
 686            for the arguments to trace_java_call_exit, we make it 1*8. */
 687
 688         M_MFLR(REG_ZERO);
 689         M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
 690         M_STWU(REG_SP, REG_SP, -(LA_SIZE + (1 + 1) * 8));
 691
 692         /* save return value */
 693
 694         switch (md->returntype.type) {
 695         case TYPE_INT:
 696         case TYPE_ADR:
 697                 M_IST(REG_RESULT, REG_SP, LA_SIZE + 1 * 8);
 698                 break;
 699         case TYPE_LNG:
 700                 M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 8);
 701                 break;
 702         case TYPE_FLT:
 703                 M_FST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
 704                 break;
 705         case TYPE_DBL:
 706                 M_DST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
 707                 break;
 708         case TYPE_VOID:
 709                 break;
 710         }
 711
 712         disp = dseg_add_address(cd, m);
 713         M_ALD(REG_A0, REG_PV, disp);
 714         M_AADD_IMM(REG_SP, LA_SIZE + 1 * 8, REG_A1);
 715
 716         disp = dseg_add_functionptr(cd, trace_java_call_exit);
 717         M_ALD(REG_ITMP2, REG_PV, disp);
 718         M_MTCTR(REG_ITMP2);
 719         M_JSR;
 720
 721         /* restore return value */
 722
 723         switch (md->returntype.type) {
 724         case TYPE_INT:
 725         case TYPE_ADR:
 726                 M_ILD(REG_RESULT, REG_SP, LA_SIZE + 1 * 8);
 727                 break;
 728         case TYPE_LNG:
 729                 M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 8);
 730                 break;
 731         case TYPE_FLT:
 732                 M_FLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
 733                 break;
 734         case TYPE_DBL:
 735                 M_DLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
 736                 break;
 737         case TYPE_VOID:
 738                 break;
 739         }
 740
 741         M_ALD(REG_ZERO, REG_SP, LA_SIZE + (1 + 1) * 8 + LA_LR_OFFSET);
 742         M_MTLR(REG_ZERO);
 743         M_LDA(REG_SP, REG_SP, LA_SIZE + (1 + 1) * 8);
 744
 745         /* mark trace code */
 746
 747         M_NOP;
 748 #endif /* !defined(NDEBUG) */
 749 }
 750
 751
 752 /*
 753  * These are local overrides for various environment variables in Emacs.
 754  * Please do not remove this and leave it at the end of the file, where
 755  * Emacs will automagically detect them.
 756  * ---------------------------------------------------------------------
 757  * Local variables:
 758  * mode: c
 759  * indent-tabs-mode: t
 760  * c-basic-offset: 4
 761  * tab-width: 4
 762  * End:
 763  * vim:noexpandtab:sw=4:ts=4:
 764  */