src/vm/jit/show.c

   1 /* src/vm/jit/show.c - showing the intermediate representation
   2
   3    Copyright (C) 1996-2005, 2006 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    Contact: cacao@cacaojvm.org
  26
  27    Authors: Andreas Krall
  28
  29    Changes: Edwin Steiner
  30             Christian Thalinger
  31             Christian Ullrich
  32
  33    $Id$
  34
  35 */
  36
  37
  38 #include "config.h"
  39 #include "vm/types.h"
  40
  41 #include <assert.h>
  42
  43 #include "mm/memory.h"
  44
  45 #if defined(ENABLE_THREADS)
  46 # include "threads/native/lock.h"
  47 #else
  48 # include "threads/none/lock.h"
  49 #endif
  50
  51 #include "vm/global.h"
  52 #include "vm/options.h"
  53 #include "vm/builtin.h"
  54 #include "vm/stringlocal.h"
  55 #include "vm/jit/jit.h"
  56 #include "vm/jit/show.h"
  57 #include "vm/jit/disass.h"
  58
  59
  60 /* global variables ***********************************************************/
  61
  62 #if defined(ENABLE_THREADS) && !defined(NDEBUG)
  63 static java_objectheader *show_global_lock;
  64 #endif
  65
  66
  67 /* forward declarations *******************************************************/
  68
  69 #if !defined(NDEBUG)
  70 static void new_show_variable_array(jitdata *jd, stackptr *vars, int n, int stage);
  71 #endif
  72
  73
  74 /* show_init *******************************************************************
  75
  76    Initialized the show subsystem (called by jit_init).
  77
  78 *******************************************************************************/
  79
  80 #if !defined(NDEBUG)
  81 bool show_init(void)
  82 {
  83 #if defined(ENABLE_THREADS)
  84         /* initialize the show lock */
  85
  86         show_global_lock = NEW(java_objectheader);
  87
  88         lock_init_object_lock(show_global_lock);
  89 #endif
  90
  91         /* everything's ok */
  92
  93         return true;
  94 }
  95 #endif
  96
  97
  98 #if !defined(NDEBUG)
  99 static char *jit_type[] = {
 100         "int",
 101         "lng",
 102         "flt",
 103         "dbl",
 104         "adr"
 105 };
 106 #endif
 107
 108
 109 /* show_method *****************************************************************
 110
 111    Print the intermediate representation of a method.
 112
 113    NOTE: Currently this function may only be called after register allocation!
 114
 115 *******************************************************************************/
 116
 117 #if !defined(NDEBUG)
 118 void new_show_method(jitdata *jd, int stage)
 119 {
 120         methodinfo     *m;
 121         codeinfo       *code;
 122         codegendata    *cd;
 123         registerdata   *rd;
 124         basicblock     *bptr;
 125         basicblock     *lastbptr;
 126         exceptiontable *ex;
 127         s4              i, j;
 128         u1             *u1ptr;
 129
 130         /* get required compiler data */
 131
 132         m    = jd->m;
 133         code = jd->code;
 134         cd   = jd->cd;
 135         rd   = jd->rd;
 136
 137         /* We need to enter a lock here, since the binutils disassembler
 138            is not reentrant-able and we could not read functions printed
 139            at the same time. */
 140
 141         LOCK_MONITOR_ENTER(show_global_lock);
 142
 143         /* get the last basic block */
 144
 145         for (lastbptr = jd->new_basicblocks; lastbptr->next != NULL; lastbptr = lastbptr->next);
 146
 147         printf("\n");
 148
 149         method_println(m);
 150
 151         printf("\n(NEW INSTRUCTION FORMAT)\n");
 152         printf("\nBasic blocks: %d\n", jd->new_basicblockcount);
 153         if (stage >= SHOW_CODE) {
 154                 printf("Code length:  %d\n", (lastbptr->mpc - jd->new_basicblocks[0].mpc));
 155                 printf("Data length:  %d\n", cd->dseglen);
 156                 printf("Stub length:  %d\n", (s4) (code->mcodelength -
 157                                                                                    ((ptrint) cd->dseglen + lastbptr->mpc)));
 158         }
 159         printf("Max locals:   %d\n", cd->maxlocals);
 160         printf("Max stack:    %d\n", cd->maxstack);
 161         printf("Line number table length: %d\n", m->linenumbercount);
 162
 163         if (stage >= SHOW_PARSE) {
 164                 printf("Exceptions (Number: %d):\n", cd->exceptiontablelength);
 165                 for (ex = cd->exceptiontable; ex != NULL; ex = ex->down) {
 166                         printf("    L%03d ... ", ex->start->nr );
 167                         printf("L%03d  = ", ex->end->nr);
 168                         printf("L%03d", ex->handler->nr);
 169                         printf("  (catchtype: ");
 170                         if (ex->catchtype.any)
 171                                 if (IS_CLASSREF(ex->catchtype))
 172                                         utf_display_printable_ascii_classname(ex->catchtype.ref->name);
 173                                 else
 174                                         utf_display_printable_ascii_classname(ex->catchtype.cls->name);
 175                         else
 176                                 printf("ANY");
 177                         printf(")\n");
 178                 }
 179         }
 180
 181         if (stage >= SHOW_PARSE && rd) {
 182         printf("Local Table:\n");
 183         for (i = 0; i < cd->maxlocals; i++) {
 184                 printf("   %3d: ", i);
 185
 186 #if defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER)
 187                 for (j = TYPE_INT; j <= TYPE_ADR; j++) {
 188 # if defined(ENABLE_INTRP)
 189                         if (!opt_intrp) {
 190 # endif
 191                                 if (rd->locals[i][j].type >= 0) {
 192                                         printf("   (%s) ", jit_type[j]);
 193                                         if (stage >= SHOW_REGS) {
 194                                                 if (rd->locals[i][j].flags & INMEMORY)
 195                                                         printf("m%2d", rd->locals[i][j].regoff);
 196 # ifdef HAS_ADDRESS_REGISTER_FILE
 197                                                 else if (j == TYPE_ADR)
 198                                                         printf("r%02d", rd->locals[i][j].regoff);
 199 # endif
 200                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
 201                                                         printf("f%02d", rd->locals[i][j].regoff);
 202                                                 else {
 203 # if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 204                                                         if (IS_2_WORD_TYPE(j))
 205                                                                 printf(" %3s/%3s",
 206                                                                            regs[GET_LOW_REG(rd->locals[i][j].regoff)],
 207                                                                            regs[GET_HIGH_REG(rd->locals[i][j].regoff)]);
 208                                                         else
 209 # endif
 210                                                                 printf("%3s", regs[rd->locals[i][j].regoff]);
 211                                                 }
 212                                         }
 213                                 }
 214 # if defined(ENABLE_INTRP)
 215                         }
 216 # endif
 217                 }
 218 #endif /* defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER) */
 219
 220                 printf("\n");
 221         }
 222         printf("\n");
 223         }
 224
 225         if (stage >= SHOW_STACK && rd) {
 226 #if defined(ENABLE_LSRA) || defined(ENABLE_SSA)
 227         if (!opt_lsra) {
 228 #endif
 229 #if defined(ENABLE_INTRP)
 230                 if (!opt_intrp) {
 231 #endif
 232         printf("Interface Table:\n");
 233         for (i = 0; i < cd->maxstack; i++) {
 234                 if ((rd->interfaces[i][0].type >= 0) ||
 235                         (rd->interfaces[i][1].type >= 0) ||
 236                     (rd->interfaces[i][2].type >= 0) ||
 237                         (rd->interfaces[i][3].type >= 0) ||
 238                     (rd->interfaces[i][4].type >= 0)) {
 239                         printf("   %3d: ", i);
 240
 241 #if defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER)
 242 # if defined(ENABLE_INTRP)
 243                         if (!opt_intrp) {
 244 # endif
 245                                 for (j = TYPE_INT; j <= TYPE_ADR; j++) {
 246                                         if (rd->interfaces[i][j].type >= 0) {
 247                                                 printf("   (%s) ", jit_type[j]);
 248                                                 if (stage >= SHOW_REGS) {
 249                                                         if (rd->interfaces[i][j].flags & SAVEDVAR) {
 250                                                                 if (rd->interfaces[i][j].flags & INMEMORY)
 251                                                                         printf("M%2d", rd->interfaces[i][j].regoff);
 252 #ifdef HAS_ADDRESS_REGISTER_FILE
 253                                                                 else if (j == TYPE_ADR)
 254                                                                         printf("R%02d", rd->interfaces[i][j].regoff);
 255 #endif
 256                                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
 257                                                                         printf("F%02d", rd->interfaces[i][j].regoff);
 258                                                                 else {
 259 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 260                                                                         if (IS_2_WORD_TYPE(j))
 261                                                                                 printf(" %3s/%3s",
 262                                                                                            regs[GET_LOW_REG(rd->interfaces[i][j].regoff)],
 263                                                                                            regs[GET_HIGH_REG(rd->interfaces[i][j].regoff)]);
 264                                                                         else
 265 #endif
 266                                                                                 printf("%3s",regs[rd->interfaces[i][j].regoff]);
 267                                                                 }
 268                                                         }
 269                                                         else {
 270                                                                 if (rd->interfaces[i][j].flags & INMEMORY)
 271                                                                         printf("m%2d", rd->interfaces[i][j].regoff);
 272 #ifdef HAS_ADDRESS_REGISTER_FILE
 273                                                                 else if (j == TYPE_ADR)
 274                                                                         printf("r%02d", rd->interfaces[i][j].regoff);
 275 #endif
 276                                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
 277                                                                         printf("f%02d", rd->interfaces[i][j].regoff);
 278                                                                 else {
 279 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 280                                                                         if (IS_2_WORD_TYPE(j))
 281                                                                                 printf(" %3s/%3s",
 282                                                                                            regs[GET_LOW_REG(rd->interfaces[i][j].regoff)],
 283                                                                                            regs[GET_HIGH_REG(rd->interfaces[i][j].regoff)]);
 284                                                                         else
 285 #endif
 286                                                                                 printf("%3s",regs[rd->interfaces[i][j].regoff]);
 287                                                                 }
 288                                                         }
 289                                                 }
 290                                         }
 291                                 }
 292                                 printf("\n");
 293 # if defined(ENABLE_INTRP)
 294                         }
 295 # endif
 296 #endif /* defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER) */
 297
 298                 }
 299         }
 300         printf("\n");
 301
 302 #if defined(ENABLE_INTRP)
 303                 }
 304 #endif
 305 #if defined(ENABLE_LSRA) || defined(ENABLE_SSA)
 306         }
 307 #endif
 308         } /* if >= SHOW_STACK */
 309
 310         if (code->rplpoints) {
 311                 printf("Replacement Points:\n");
 312                 replace_show_replacement_points(code);
 313                 printf("\n");
 314         }
 315
 316 #if defined(ENABLE_DISASSEMBLER)
 317         /* show code before first basic block */
 318
 319         if ((stage >= SHOW_CODE) && JITDATA_HAS_FLAG_SHOWDISASSEMBLE(jd)) {
 320                 u1ptr = (u1 *) ((ptrint) code->mcode + cd->dseglen);
 321
 322                 for (; u1ptr < (u1 *) ((ptrint) code->mcode + cd->dseglen + jd->new_basicblocks[0].mpc);)
 323                         DISASSINSTR(u1ptr);
 324
 325                 printf("\n");
 326         }
 327 #endif
 328
 329         /* show code of all basic blocks */
 330
 331         for (bptr = jd->new_basicblocks; bptr != NULL; bptr = bptr->next)
 332                 new_show_basicblock(jd, bptr, stage);
 333
 334 #if defined(ENABLE_DISASSEMBLER)
 335         /* show stubs code */
 336
 337         if (stage >= SHOW_CODE && opt_showdisassemble && opt_showexceptionstubs) {
 338                 printf("\nStubs code:\n");
 339                 printf("Length: %d\n\n", (s4) (code->mcodelength -
 340                                                                            ((ptrint) cd->dseglen + lastbptr->mpc)));
 341
 342                 u1ptr = (u1 *) ((ptrint) code->mcode + cd->dseglen + lastbptr->mpc);
 343
 344                 for (; (ptrint) u1ptr < ((ptrint) code->mcode + code->mcodelength);)
 345                         DISASSINSTR(u1ptr);
 346
 347                 printf("\n");
 348         }
 349 #endif
 350
 351         LOCK_MONITOR_EXIT(show_global_lock);
 352
 353         /* finally flush the output */
 354
 355         fflush(stdout);
 356 }
 357 #endif /* !defined(NDEBUG) */
 358
 359
 360 /* show_basicblock *************************************************************
 361
 362    Print the intermediate representation of a basic block.
 363
 364    NOTE: Currently this function may only be called after register allocation!
 365
 366 *******************************************************************************/
 367
 368 #if !defined(NDEBUG)
 369 void new_show_basicblock(jitdata *jd, basicblock *bptr, int stage)
 370 {
 371         methodinfo  *m;
 372         codeinfo    *code;
 373         codegendata *cd;
 374         s4           i;
 375         bool         deadcode;
 376         instruction *iptr;
 377         u1          *u1ptr;
 378
 379         /* get required compiler data */
 380
 381         m    = jd->m;
 382         code = jd->code;
 383         cd   = jd->cd;
 384
 385         if (bptr->flags != BBDELETED) {
 386                 deadcode = bptr->flags <= BBREACHED;
 387
 388                 printf("======== %sL%03d ======== (flags: %d, bitflags: %01x, next: %d, type: ",
 389                                 (bptr->bitflags & BBFLAG_REPLACEMENT) ? "<REPLACE> " : "",
 390                            bptr->nr, bptr->flags, bptr->bitflags,
 391                            (bptr->next) ? (bptr->next->nr) : -1);
 392
 393                 switch (bptr->type) {
 394                 case BBTYPE_STD:
 395                         printf("STD");
 396                         break;
 397                 case BBTYPE_EXH:
 398                         printf("EXH");
 399                         break;
 400                 case BBTYPE_SBR:
 401                         printf("SBR");
 402                         break;
 403                 }
 404
 405                 printf(", instruction count: %d, predecessors: %d [ ",
 406                            bptr->icount, bptr->predecessorcount);
 407
 408                 for (i = 0; i < bptr->predecessorcount; i++)
 409                         printf("%d ", bptr->predecessors[i]->nr);
 410
 411                 printf("]):\n");
 412
 413                 if (stage >= SHOW_STACK) {
 414                         printf("IN:  ");
 415                         new_show_variable_array(jd, bptr->invars, bptr->indepth, stage);
 416                         printf("\n");
 417                 }
 418
 419                 iptr = bptr->iinstr;
 420
 421                 for (i = 0; i < bptr->icount; i++, iptr++) {
 422                         printf("%4d:  ", iptr->line);
 423
 424                         new_show_icmd(jd, iptr, deadcode, stage);
 425                         printf("\n");
 426                 }
 427
 428                 if (stage >= SHOW_STACK) {
 429                         printf("OUT: ");
 430                         new_show_variable_array(jd, bptr->outvars, bptr->outdepth, stage);
 431                         printf("\n");
 432                 }
 433
 434 #if defined(ENABLE_DISASSEMBLER)
 435                 if ((stage >= SHOW_CODE) && JITDATA_HAS_FLAG_SHOWDISASSEMBLE(jd) &&
 436                         (!deadcode))
 437                 {
 438                         printf("\n");
 439                         u1ptr = (u1 *) (code->mcode + cd->dseglen + bptr->mpc);
 440
 441                         if (bptr->next != NULL) {
 442                                 for (; u1ptr < (u1 *) (code->mcode + cd->dseglen + bptr->next->mpc);)
 443                                         DISASSINSTR(u1ptr);
 444
 445                         }
 446                         else {
 447                                 for (; u1ptr < (u1 *) (code->mcode + code->mcodelength);)
 448                                         DISASSINSTR(u1ptr);
 449                         }
 450                         printf("\n");
 451                 }
 452 #endif
 453         }
 454 }
 455 #endif /* !defined(NDEBUG) */
 456
 457
 458 /* show_icmd *******************************************************************
 459
 460    Print the intermediate representation of an instruction.
 461
 462    NOTE: Currently this function may only be called after register allocation!
 463
 464 *******************************************************************************/
 465
 466 #if !defined(NDEBUG)
 467
 468 #define SHOW_TARGET(target)                                          \
 469         if (stage >= SHOW_STACK) {                                   \
 470             printf("--> L%03d ", (target).block->nr);                \
 471         }                                                            \
 472         else if (stage >= SHOW_PARSE) {                              \
 473             printf("--> insindex %d (L%03d) ", (target).insindex,    \
 474                 jd->new_basicblocks[jd->new_basicblockindex[         \
 475                 (target).insindex]].nr);                             \
 476         }                                                            \
 477         else {                                                       \
 478             printf("--> insindex %d ", (target).insindex);           \
 479         }
 480
 481 #define SHOW_INT_CONST(val)                                          \
 482         if (stage >= SHOW_PARSE) {                                   \
 483             printf("%ld ", (long) (val));                            \
 484         }                                                            \
 485         else {                                                       \
 486             printf("iconst ");                                       \
 487         }
 488
 489 #define SHOW_LNG_CONST(val)                                          \
 490         if (stage >= SHOW_PARSE) {                                   \
 491             printf("%lld ", (long long)(val));                       \
 492         }                                                            \
 493         else {                                                       \
 494             printf("lconst ");                                       \
 495         }
 496
 497 #define SHOW_FLT_CONST(val)                                          \
 498         if (stage >= SHOW_PARSE) {                                   \
 499             printf("%g ", (val));                                    \
 500         }                                                            \
 501         else {                                                       \
 502             printf("fconst ");                                       \
 503         }
 504
 505 #define SHOW_DBL_CONST(val)                                          \
 506         if (stage >= SHOW_PARSE) {                                   \
 507             printf("%g ", (val));                                    \
 508         }                                                            \
 509         else {                                                       \
 510             printf("dconst ");                                       \
 511         }
 512
 513 #define SHOW_INDEX(index)                                            \
 514         if (stage >= SHOW_PARSE) {                                   \
 515             printf("%d ", index);                                    \
 516         }                                                            \
 517         else {                                                       \
 518             printf("index");                                         \
 519         }
 520
 521 #define SHOW_STRING(val)                                             \
 522         if (stage >= SHOW_PARSE) {                                   \
 523             putchar('"');                                            \
 524             utf_display_printable_ascii(                             \
 525                 javastring_toutf((java_lang_String *)(val), false)); \
 526             printf("\" ");                                           \
 527         }                                                            \
 528         else {                                                       \
 529             printf("string ");                                       \
 530         }
 531
 532 #define SHOW_CLASSREF_OR_CLASSINFO(c)                                \
 533         if (stage >= SHOW_PARSE) {                                   \
 534             if (IS_CLASSREF(c))                                      \
 535                 class_classref_print(c.ref);                         \
 536             else                                                     \
 537                 class_print(c.cls);                                  \
 538             putchar(' ');                                            \
 539         }                                                            \
 540         else {                                                       \
 541             printf("class ");                                        \
 542         }
 543
 544 #define SHOW_FIELD(fmiref)                                           \
 545         if (stage >= SHOW_PARSE) {                                   \
 546             field_fieldref_print(fmiref);                            \
 547             putchar(' ');                                            \
 548         }                                                            \
 549         else {                                                       \
 550             printf("field ");                                        \
 551         }
 552
 553 #define SHOW_STACKVAR(sp)                                            \
 554         new_show_stackvar(jd, (sp), stage)
 555
 556 #define SHOW_S1(iptr)                                                \
 557         if (stage >= SHOW_STACK) {                                   \
 558             SHOW_STACKVAR(iptr->s1.var);                             \
 559         }
 560
 561 #define SHOW_S2(iptr)                                                \
 562         if (stage >= SHOW_STACK) {                                   \
 563             SHOW_STACKVAR(iptr->sx.s23.s2.var);                      \
 564         }
 565
 566 #define SHOW_S3(iptr)                                                \
 567         if (stage >= SHOW_STACK) {                                   \
 568             SHOW_STACKVAR(iptr->sx.s23.s3.var);                      \
 569         }
 570
 571 #define SHOW_DST(iptr)                                               \
 572         if (stage >= SHOW_STACK) {                                   \
 573             printf("=> ");                                           \
 574             SHOW_STACKVAR(iptr->dst.var);                            \
 575         }
 576
 577 #define SHOW_S1_LOCAL(iptr)                                          \
 578         if (stage >= SHOW_STACK) {                                   \
 579             printf("L%d ", iptr->s1.localindex);                     \
 580         }
 581
 582 #define SHOW_DST_LOCAL(iptr)                                         \
 583         if (stage >= SHOW_STACK) {                                   \
 584             printf("=> L%d ", iptr->dst.localindex);                 \
 585         }
 586
 587 static void new_show_stackvar(jitdata *jd, stackptr sp, int stage)
 588 {
 589         char type;
 590
 591         switch (sp->type) {
 592                 case TYPE_INT: type = 'i'; break;
 593                 case TYPE_LNG: type = 'l'; break;
 594                 case TYPE_FLT: type = 'f'; break;
 595                 case TYPE_DBL: type = 'd'; break;
 596                 case TYPE_ADR: type = 'a'; break;
 597                 default:       type = '?';
 598         }
 599         printf("S%c%d", type, (int) (sp - jd->new_stack));
 600
 601         if (stage >= SHOW_REGS) {
 602                 putchar('(');
 603
 604                 if (sp->flags & SAVEDVAR) {
 605                         switch (sp->varkind) {
 606                         case TEMPVAR:
 607                                 if (sp->flags & INMEMORY)
 608                                         printf("M%02d", sp->regoff);
 609 #ifdef HAS_ADDRESS_REGISTER_FILE
 610                                 else if (sp->type == TYPE_ADR)
 611                                         printf("R%02d", sp->regoff);
 612 #endif
 613                                 else if (IS_FLT_DBL_TYPE(sp->type))
 614                                         printf("F%02d", sp->regoff);
 615                                 else {
 616 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 617                                         if (IS_2_WORD_TYPE(sp->type)) {
 618 # if defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER)
 619 #  if defined(ENABLE_INTRP)
 620                                                 if (opt_intrp)
 621                                                         printf("%3d/%3d", GET_LOW_REG(sp->regoff),
 622                                                                    GET_HIGH_REG(sp->regoff));
 623                                                 else
 624 #  endif
 625                                                         printf("%3s/%3s", regs[GET_LOW_REG(sp->regoff)],
 626                                                                    regs[GET_HIGH_REG(sp->regoff)]);
 627 # else
 628                                                 printf("%3d/%3d", GET_LOW_REG(sp->regoff),
 629                                                            GET_HIGH_REG(sp->regoff));
 630 # endif
 631                                         }
 632                                         else
 633 #endif /* defined(SUPPORT_COMBINE_INTEGER_REGISTERS) */
 634                                                 {
 635 #if defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER)
 636 # if defined(ENABLE_INTRP)
 637                                                         if (opt_intrp)
 638                                                                 printf("%3d", sp->regoff);
 639                                                         else
 640 # endif
 641                                                                 printf("%3s", regs[sp->regoff]);
 642 #else
 643                                                         printf("%3d", sp->regoff);
 644 #endif
 645                                                 }
 646                                 }
 647                                 break;
 648                         case STACKVAR:
 649                                 printf("I%02d", sp->varnum);
 650                                 break;
 651                         case LOCALVAR:
 652                                 printf("L%02d", sp->varnum);
 653                                 break;
 654                         case ARGVAR:
 655                                 if (sp->varnum == -1) {
 656                                         /* Return Value                                  */
 657                                         /* varkind ARGVAR "misused for this special case */
 658                                         printf(" V0");
 659                                 }
 660                                 else /* "normal" Argvar */
 661                                         printf("A%02d", sp->varnum);
 662                                 break;
 663                         default:
 664                                 printf("!xx {kind=%d, num=%d}", sp->varkind, sp->varnum);
 665                         }
 666                 }
 667                 else { /* not SAVEDVAR */
 668                         switch (sp->varkind) {
 669                         case TEMPVAR:
 670                                 if (sp->flags & INMEMORY)
 671                                         printf("m%02d", sp->regoff);
 672 #ifdef HAS_ADDRESS_REGISTER_FILE
 673                                 else if (sp->type == TYPE_ADR)
 674                                         printf("r%02d", sp->regoff);
 675 #endif
 676                                 else if (IS_FLT_DBL_TYPE(sp->type))
 677                                         printf("f%02d", sp->regoff);
 678                                 else {
 679 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 680                                         if (IS_2_WORD_TYPE(sp->type)) {
 681 # if defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER)
 682 #  if defined(ENABLE_INTRP)
 683                                                 if (opt_intrp)
 684                                                         printf("%3d/%3d", GET_LOW_REG(sp->regoff),
 685                                                                    GET_HIGH_REG(sp->regoff));
 686                                                 else
 687 #  endif
 688                                                         printf("%3s/%3s", regs[GET_LOW_REG(sp->regoff)],
 689                                                                    regs[GET_HIGH_REG(sp->regoff)]);
 690 # else
 691                                                 printf("%3d/%3d", GET_LOW_REG(sp->regoff),
 692                                                            GET_HIGH_REG(sp->regoff));
 693 # endif
 694                                         }
 695                                         else
 696 #endif /* defined(SUPPORT_COMBINE_INTEGER_REGISTERS) */
 697                                                 {
 698 #if defined(ENABLE_JIT) && defined(ENABLE_DISASSEMBLER)
 699 # if defined(ENABLE_INTRP)
 700                                                         if (opt_intrp)
 701                                                                 printf("%3d", sp->regoff);
 702                                                         else
 703 # endif
 704                                                                 printf("%3s", regs[sp->regoff]);
 705 #else
 706                                                         printf("%3d", sp->regoff);
 707 #endif
 708                                                 }
 709                                 }
 710                                 break;
 711                         case STACKVAR:
 712                                 printf("i%02d", sp->varnum);
 713                                 break;
 714                         case LOCALVAR:
 715                                 printf("l%02d", sp->varnum);
 716                                 break;
 717                         case ARGVAR:
 718                                 if (sp->varnum == -1) {
 719                                         /* Return Value                                  */
 720                                         /* varkind ARGVAR "misused for this special case */
 721                                         printf(" v0");
 722                                 }
 723                                 else /* "normal" Argvar */
 724                                 printf("a%02d", sp->varnum);
 725                                 break;
 726                         default:
 727                                 printf("?xx {kind=%d, num=%d}", sp->varkind, sp->varnum);
 728                         }
 729                 }
 730
 731                 putchar(')');
 732         }
 733         putchar(' ');
 734 }
 735
 736 static void new_show_variable_array(jitdata *jd, stackptr *vars, int n, int stage)
 737 {
 738         int i;
 739
 740         printf("[");
 741         for (i=0; i<n; ++i) {
 742                 if (i)
 743                         printf(" ");
 744                 new_show_stackvar(jd, vars[i], stage);
 745         }
 746         printf("]");
 747 }
 748
 749 void new_show_icmd(jitdata *jd, instruction *iptr, bool deadcode, int stage)
 750 {
 751         u2                 opcode;
 752         branch_target_t   *table;
 753         lookup_target_t   *lookup;
 754         constant_FMIref   *fmiref;
 755         stackptr          *argp;
 756         s4                 i;
 757
 758         /* get the opcode and the condition */
 759
 760         opcode    =  iptr->opc;
 761
 762         printf("%s ", icmd_names[opcode]);
 763
 764         if (stage < SHOW_PARSE)
 765                 return;
 766
 767         if (deadcode)
 768                 stage = SHOW_PARSE;
 769
 770         /* Print the condition for conditional instructions. */
 771
 772         /* XXX print condition from flags */
 773
 774         if (iptr->flags.bits & INS_FLAG_UNRESOLVED)
 775                 printf("(UNRESOLVED) ");
 776
 777         switch (opcode) {
 778
 779         case ICMD_POP:
 780         case ICMD_CHECKNULL:
 781         case ICMD_CHECKNULL_POP:
 782                 SHOW_S1(iptr);
 783                 break;
 784
 785                 /* unary */
 786         case ICMD_ARRAYLENGTH:
 787         case ICMD_INEG:
 788         case ICMD_LNEG:
 789         case ICMD_FNEG:
 790         case ICMD_DNEG:
 791         case ICMD_I2L:
 792         case ICMD_I2F:
 793         case ICMD_I2D:
 794         case ICMD_L2I:
 795         case ICMD_L2F:
 796         case ICMD_L2D:
 797         case ICMD_F2I:
 798         case ICMD_F2L:
 799         case ICMD_F2D:
 800         case ICMD_D2I:
 801         case ICMD_D2L:
 802         case ICMD_D2F:
 803         case ICMD_INT2BYTE:
 804         case ICMD_INT2CHAR:
 805         case ICMD_INT2SHORT:
 806                 SHOW_S1(iptr);
 807                 SHOW_DST(iptr);
 808                 break;
 809
 810                 /* binary */
 811         case ICMD_IADD:
 812         case ICMD_LADD:
 813         case ICMD_FADD:
 814         case ICMD_DADD:
 815         case ICMD_ISUB:
 816         case ICMD_LSUB:
 817         case ICMD_FSUB:
 818         case ICMD_DSUB:
 819         case ICMD_IMUL:
 820         case ICMD_LMUL:
 821         case ICMD_FMUL:
 822         case ICMD_DMUL:
 823         case ICMD_IDIV:
 824         case ICMD_LDIV:
 825         case ICMD_FDIV:
 826         case ICMD_DDIV:
 827         case ICMD_IREM:
 828         case ICMD_LREM:
 829         case ICMD_FREM:
 830         case ICMD_DREM:
 831         case ICMD_ISHL:
 832         case ICMD_LSHL:
 833         case ICMD_ISHR:
 834         case ICMD_LSHR:
 835         case ICMD_IUSHR:
 836         case ICMD_LUSHR:
 837         case ICMD_IAND:
 838         case ICMD_LAND:
 839         case ICMD_IOR:
 840         case ICMD_LOR:
 841         case ICMD_IXOR:
 842         case ICMD_LXOR:
 843         case ICMD_LCMP:
 844         case ICMD_FCMPL:
 845         case ICMD_FCMPG:
 846         case ICMD_DCMPL:
 847         case ICMD_DCMPG:
 848                 SHOW_S1(iptr);
 849                 SHOW_S2(iptr);
 850                 SHOW_DST(iptr);
 851                 break;
 852
 853                 /* binary/const INT */
 854         case ICMD_IADDCONST:
 855         case ICMD_ISUBCONST:
 856         case ICMD_IMULCONST:
 857         case ICMD_IMULPOW2:
 858         case ICMD_IDIVPOW2:
 859         case ICMD_IREMPOW2:
 860         case ICMD_IANDCONST:
 861         case ICMD_IORCONST:
 862         case ICMD_IXORCONST:
 863         case ICMD_ISHLCONST:
 864         case ICMD_ISHRCONST:
 865         case ICMD_IUSHRCONST:
 866         case ICMD_LSHLCONST:
 867         case ICMD_LSHRCONST:
 868         case ICMD_LUSHRCONST:
 869                 SHOW_S1(iptr);
 870                 SHOW_INT_CONST(iptr->sx.val.i);
 871                 SHOW_DST(iptr);
 872                 break;
 873
 874                 /* ?ASTORECONST (trinary/const INT) */
 875         case ICMD_IASTORECONST:
 876         case ICMD_BASTORECONST:
 877         case ICMD_CASTORECONST:
 878         case ICMD_SASTORECONST:
 879                 SHOW_S1(iptr);
 880                 SHOW_S2(iptr);
 881                 SHOW_INT_CONST(iptr->sx.s23.s3.constval);
 882                 break;
 883
 884                 /* const INT */
 885         case ICMD_ICONST:
 886                 SHOW_INT_CONST(iptr->sx.val.i);
 887                 SHOW_DST(iptr);
 888                 break;
 889
 890                 /* binary/const LNG */
 891         case ICMD_LADDCONST:
 892         case ICMD_LSUBCONST:
 893         case ICMD_LMULCONST:
 894         case ICMD_LMULPOW2:
 895         case ICMD_LDIVPOW2:
 896         case ICMD_LREMPOW2:
 897         case ICMD_LANDCONST:
 898         case ICMD_LORCONST:
 899         case ICMD_LXORCONST:
 900                 SHOW_S1(iptr);
 901                 SHOW_LNG_CONST(iptr->sx.val.l);
 902                 SHOW_DST(iptr);
 903                 break;
 904
 905                 /* trinary/const LNG (<= pointer size) */
 906         case ICMD_LASTORECONST:
 907                 SHOW_S1(iptr);
 908                 SHOW_S2(iptr);
 909                 SHOW_LNG_CONST(iptr->sx.s23.s3.constval);
 910                 break;
 911
 912                 /* const LNG */
 913         case ICMD_LCONST:
 914                 SHOW_LNG_CONST(iptr->sx.val.l);
 915                 SHOW_DST(iptr);
 916                 break;
 917
 918                 /* const FLT */
 919         case ICMD_FCONST:
 920                 SHOW_FLT_CONST(iptr->sx.val.f);
 921                 SHOW_DST(iptr);
 922                 break;
 923
 924                 /* const DBL */
 925         case ICMD_DCONST:
 926                 SHOW_DBL_CONST(iptr->sx.val.d);
 927                 SHOW_DST(iptr);
 928                 break;
 929
 930                 /* const ADR */
 931         case ICMD_ACONST:
 932                 if (iptr->flags.bits & INS_FLAG_CLASS) {
 933                         SHOW_CLASSREF_OR_CLASSINFO(iptr->sx.val.c);
 934                 }
 935                 else if (iptr->sx.val.anyptr == NULL) {
 936                         printf("NULL ");
 937                 }
 938                 else {
 939                         SHOW_STRING(iptr->sx.val.stringconst);
 940                 }
 941                 SHOW_DST(iptr);
 942                 break;
 943
 944         case ICMD_AASTORECONST:
 945                 SHOW_S1(iptr);
 946                 SHOW_S2(iptr);
 947                 printf("%p ", (void*) iptr->sx.s23.s3.constval);
 948                 break;
 949
 950         case ICMD_GETFIELD:        /* 1 -> 1 */
 951         case ICMD_PUTFIELD:        /* 2 -> 0 */
 952         case ICMD_PUTSTATIC:       /* 1 -> 0 */
 953         case ICMD_GETSTATIC:       /* 0 -> 1 */
 954         case ICMD_PUTSTATICCONST:  /* 0 -> 0 */
 955         case ICMD_PUTFIELDCONST:   /* 1 -> 0 */
 956                 if (opcode != ICMD_GETSTATIC && opcode != ICMD_PUTSTATICCONST) {
 957                         SHOW_S1(iptr);
 958                         if (opcode == ICMD_PUTFIELD) {
 959                                 SHOW_S2(iptr);
 960                         }
 961                 }
 962                 INSTRUCTION_GET_FIELDREF(iptr, fmiref);
 963                 SHOW_FIELD(fmiref);
 964
 965                 if (opcode == ICMD_GETSTATIC || opcode == ICMD_GETFIELD) {
 966                         SHOW_DST(iptr);
 967                 }
 968                 break;
 969
 970         case ICMD_IINC:
 971                 SHOW_S1_LOCAL(iptr);
 972                 SHOW_INT_CONST(iptr->sx.val.i);
 973                 SHOW_DST_LOCAL(iptr);
 974                 break;
 975
 976         case ICMD_IASTORE:
 977         case ICMD_SASTORE:
 978         case ICMD_BASTORE:
 979         case ICMD_CASTORE:
 980         case ICMD_LASTORE:
 981         case ICMD_DASTORE:
 982         case ICMD_FASTORE:
 983         case ICMD_AASTORE:
 984                 SHOW_S1(iptr);
 985                 SHOW_S2(iptr);
 986                 SHOW_S3(iptr);
 987                 break;
 988
 989         case ICMD_IALOAD:
 990         case ICMD_SALOAD:
 991         case ICMD_BALOAD:
 992         case ICMD_CALOAD:
 993         case ICMD_LALOAD:
 994         case ICMD_DALOAD:
 995         case ICMD_FALOAD:
 996         case ICMD_AALOAD:
 997                 SHOW_S1(iptr);
 998                 SHOW_S2(iptr);
 999                 SHOW_DST(iptr);
1000                 break;
1001
1002         case ICMD_RET:
1003                 SHOW_S1_LOCAL(iptr);
1004                 break;
1005
1006         case ICMD_ILOAD:
1007         case ICMD_LLOAD:
1008         case ICMD_FLOAD:
1009         case ICMD_DLOAD:
1010         case ICMD_ALOAD:
1011                 SHOW_S1_LOCAL(iptr);
1012                 SHOW_DST(iptr);
1013                 break;
1014
1015         case ICMD_ISTORE:
1016         case ICMD_LSTORE:
1017         case ICMD_FSTORE:
1018         case ICMD_DSTORE:
1019         case ICMD_ASTORE:
1020                 SHOW_S1(iptr);
1021                 SHOW_DST_LOCAL(iptr);
1022                 break;
1023
1024         case ICMD_NEW:
1025                 SHOW_DST(iptr);
1026                 break;
1027
1028         case ICMD_NEWARRAY:
1029                 SHOW_DST(iptr);
1030                 break;
1031
1032         case ICMD_ANEWARRAY:
1033                 SHOW_DST(iptr);
1034                 break;
1035
1036         case ICMD_MULTIANEWARRAY:
1037                 if (stage >= SHOW_STACK) {
1038                         argp = iptr->sx.s23.s2.args;
1039                         i = iptr->s1.argcount;
1040                         while (i--) {
1041                                 SHOW_STACKVAR(*(argp++));
1042                         }
1043                 }
1044                 else {
1045                         printf("argcount=%d ", iptr->s1.argcount);
1046                 }
1047                 SHOW_DST(iptr);
1048                 break;
1049
1050         case ICMD_CHECKCAST:
1051                 SHOW_S1(iptr);
1052                 SHOW_DST(iptr);
1053                 break;
1054
1055         case ICMD_INSTANCEOF:
1056                 SHOW_S1(iptr);
1057                 SHOW_DST(iptr);
1058                 break;
1059
1060         case ICMD_INLINE_START:
1061         case ICMD_INLINE_END:
1062                 break;
1063
1064         case ICMD_BUILTIN:
1065                 if (stage >= SHOW_STACK) {
1066                         argp = iptr->sx.s23.s2.args;
1067                         i = iptr->s1.argcount;
1068                         while (i--) {
1069                                 SHOW_STACKVAR(*(argp++));
1070                         }
1071                 }
1072                 printf("%s ", iptr->sx.s23.s3.bte->cname);
1073                 if (iptr->sx.s23.s3.bte->md->returntype.type != TYPE_VOID) {
1074                         SHOW_DST(iptr);
1075                 }
1076                 break;
1077
1078         case ICMD_INVOKEVIRTUAL:
1079         case ICMD_INVOKESPECIAL:
1080         case ICMD_INVOKESTATIC:
1081         case ICMD_INVOKEINTERFACE:
1082                 if (stage >= SHOW_STACK) {
1083                         argp = iptr->sx.s23.s2.args;
1084                         i = iptr->s1.argcount;
1085                         while (i--) {
1086                                 SHOW_STACKVAR(*(argp++));
1087                         }
1088                 }
1089                 INSTRUCTION_GET_METHODREF(iptr, fmiref);
1090                 method_methodref_print(fmiref);
1091                 if (fmiref->parseddesc.md->returntype.type != TYPE_VOID) {
1092                         SHOW_DST(iptr);
1093                 }
1094                 break;
1095
1096         case ICMD_IFEQ:
1097         case ICMD_IFNE:
1098         case ICMD_IFLT:
1099         case ICMD_IFGE:
1100         case ICMD_IFGT:
1101         case ICMD_IFLE:
1102                 SHOW_S1(iptr);
1103                 SHOW_TARGET(iptr->dst);
1104                 break;
1105
1106         case ICMD_IF_LEQ:
1107         case ICMD_IF_LNE:
1108         case ICMD_IF_LLT:
1109         case ICMD_IF_LGE:
1110         case ICMD_IF_LGT:
1111         case ICMD_IF_LLE:
1112                 SHOW_S1(iptr);
1113                 SHOW_TARGET(iptr->dst);
1114                 break;
1115
1116         case ICMD_GOTO:
1117         case ICMD_INLINE_GOTO:
1118                 SHOW_TARGET(iptr->dst);
1119                 break;
1120
1121         case ICMD_JSR:
1122                 SHOW_TARGET(iptr->sx.s23.s3.jsrtarget);
1123                 SHOW_DST(iptr);
1124                 break;
1125
1126         case ICMD_IFNULL:
1127         case ICMD_IFNONNULL:
1128                 SHOW_S1(iptr);
1129                 SHOW_TARGET(iptr->dst);
1130                 break;
1131
1132         case ICMD_IF_ICMPEQ:
1133         case ICMD_IF_ICMPNE:
1134         case ICMD_IF_ICMPLT:
1135         case ICMD_IF_ICMPGE:
1136         case ICMD_IF_ICMPGT:
1137         case ICMD_IF_ICMPLE:
1138
1139         case ICMD_IF_LCMPEQ:
1140         case ICMD_IF_LCMPNE:
1141         case ICMD_IF_LCMPLT:
1142         case ICMD_IF_LCMPGE:
1143         case ICMD_IF_LCMPGT:
1144         case ICMD_IF_LCMPLE:
1145
1146         case ICMD_IF_FCMPEQ:
1147         case ICMD_IF_FCMPNE:
1148
1149         case ICMD_IF_FCMPL_LT:
1150         case ICMD_IF_FCMPL_GE:
1151         case ICMD_IF_FCMPL_GT:
1152         case ICMD_IF_FCMPL_LE:
1153
1154         case ICMD_IF_FCMPG_LT:
1155         case ICMD_IF_FCMPG_GE:
1156         case ICMD_IF_FCMPG_GT:
1157         case ICMD_IF_FCMPG_LE:
1158
1159         case ICMD_IF_DCMPEQ:
1160         case ICMD_IF_DCMPNE:
1161
1162         case ICMD_IF_DCMPL_LT:
1163         case ICMD_IF_DCMPL_GE:
1164         case ICMD_IF_DCMPL_GT:
1165         case ICMD_IF_DCMPL_LE:
1166
1167         case ICMD_IF_DCMPG_LT:
1168         case ICMD_IF_DCMPG_GE:
1169         case ICMD_IF_DCMPG_GT:
1170         case ICMD_IF_DCMPG_LE:
1171
1172         case ICMD_IF_ACMPEQ:
1173         case ICMD_IF_ACMPNE:
1174                 SHOW_S1(iptr);
1175                 SHOW_S2(iptr);
1176                 SHOW_TARGET(iptr->dst);
1177                 break;
1178
1179         case ICMD_TABLESWITCH:
1180                 SHOW_S1(iptr);
1181                 break;
1182
1183         case ICMD_LOOKUPSWITCH:
1184                 SHOW_S1(iptr);
1185                 break;
1186
1187         case ICMD_ARETURN:
1188                 SHOW_S1(iptr);
1189                 break;
1190
1191         case ICMD_ATHROW:
1192                 SHOW_S1(iptr);
1193                 break;
1194
1195         case ICMD_DUP:
1196                 SHOW_S1(iptr);
1197                 SHOW_DST(iptr);
1198                 break;
1199
1200         case ICMD_DUP2:
1201                 if (stage >= SHOW_STACK) {
1202                         SHOW_STACKVAR(iptr->dst.dupslots[0]);
1203                         SHOW_STACKVAR(iptr->dst.dupslots[1]);
1204                         printf("=> ");
1205                         SHOW_STACKVAR(iptr->dst.dupslots[2+0]);
1206                         SHOW_STACKVAR(iptr->dst.dupslots[2+1]);
1207                 }
1208                 break;
1209
1210         case ICMD_DUP_X1:
1211                 if (stage >= SHOW_STACK) {
1212                         SHOW_STACKVAR(iptr->dst.dupslots[0]);
1213                         SHOW_STACKVAR(iptr->dst.dupslots[1]);
1214                         printf("=> ");
1215                         SHOW_STACKVAR(iptr->dst.dupslots[2+0]);
1216                         SHOW_STACKVAR(iptr->dst.dupslots[2+1]);
1217                         SHOW_STACKVAR(iptr->dst.dupslots[2+2]);
1218                 }
1219                 break;
1220
1221         case ICMD_DUP2_X1:
1222                 if (stage >= SHOW_STACK) {
1223                         SHOW_STACKVAR(iptr->dst.dupslots[0]);
1224                         SHOW_STACKVAR(iptr->dst.dupslots[1]);
1225                         SHOW_STACKVAR(iptr->dst.dupslots[2]);
1226                         printf("=> ");
1227                         SHOW_STACKVAR(iptr->dst.dupslots[3+0]);
1228                         SHOW_STACKVAR(iptr->dst.dupslots[3+1]);
1229                         SHOW_STACKVAR(iptr->dst.dupslots[3+2]);
1230                         SHOW_STACKVAR(iptr->dst.dupslots[3+3]);
1231                         SHOW_STACKVAR(iptr->dst.dupslots[3+4]);
1232                 }
1233                 break;
1234
1235         case ICMD_DUP_X2:
1236                 if (stage >= SHOW_STACK) {
1237                         SHOW_STACKVAR(iptr->dst.dupslots[0]);
1238                         SHOW_STACKVAR(iptr->dst.dupslots[1]);
1239                         SHOW_STACKVAR(iptr->dst.dupslots[2]);
1240                         printf("=> ");
1241                         SHOW_STACKVAR(iptr->dst.dupslots[3+0]);
1242                         SHOW_STACKVAR(iptr->dst.dupslots[3+1]);
1243                         SHOW_STACKVAR(iptr->dst.dupslots[3+2]);
1244                         SHOW_STACKVAR(iptr->dst.dupslots[3+3]);
1245                 }
1246                 break;
1247
1248         case ICMD_DUP2_X2:
1249                 if (stage >= SHOW_STACK) {
1250                         SHOW_STACKVAR(iptr->dst.dupslots[0]);
1251                         SHOW_STACKVAR(iptr->dst.dupslots[1]);
1252                         SHOW_STACKVAR(iptr->dst.dupslots[2]);
1253                         SHOW_STACKVAR(iptr->dst.dupslots[4]);
1254                         printf("=> ");
1255                         SHOW_STACKVAR(iptr->dst.dupslots[4+0]);
1256                         SHOW_STACKVAR(iptr->dst.dupslots[4+1]);
1257                         SHOW_STACKVAR(iptr->dst.dupslots[4+2]);
1258                         SHOW_STACKVAR(iptr->dst.dupslots[4+3]);
1259                         SHOW_STACKVAR(iptr->dst.dupslots[4+4]);
1260                         SHOW_STACKVAR(iptr->dst.dupslots[4+5]);
1261                 }
1262                 break;
1263
1264         case ICMD_SWAP:
1265                 if (stage >= SHOW_STACK) {
1266                         SHOW_STACKVAR(iptr->dst.dupslots[0]);
1267                         SHOW_STACKVAR(iptr->dst.dupslots[1]);
1268                         printf("=> ");
1269                         SHOW_STACKVAR(iptr->dst.dupslots[2+0]);
1270                         SHOW_STACKVAR(iptr->dst.dupslots[2+1]);
1271                 }
1272                 break;
1273
1274         }
1275 }
1276 #endif /* !defined(NDEBUG) */
1277
1278
1279 /*
1280  * These are local overrides for various environment variables in Emacs.
1281  * Please do not remove this and leave it at the end of the file, where
1282  * Emacs will automagically detect them.
1283  * ---------------------------------------------------------------------
1284  * Local variables:
1285  * mode: c
1286  * indent-tabs-mode: t
1287  * c-basic-offset: 4
1288  * tab-width: 4
1289  * End:
1290  * vim:noexpandtab:sw=4:ts=4:
1291  */