sim/igen/gen-icache.c

   1 /* The IGEN simulator generator for GDB, the GNU Debugger.
   2
   3    Copyright 2002-2024 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include <stdlib.h>
  23
  24 #include "misc.h"
  25 #include "lf.h"
  26 #include "table.h"
  27 #include "filter.h"
  28 #include "igen.h"
  29
  30 #include "ld-insn.h"
  31 #include "ld-decode.h"
  32
  33 #include "gen.h"
  34
  35 #include "gen-semantics.h"
  36 #include "gen-idecode.h"
  37 #include "gen-icache.h"
  38
  39
  40
  41 static void
  42 print_icache_function_header (lf *file,
  43                               const char *basename,
  44                               const char *format_name,
  45                               const opcode_bits *expanded_bits,
  46                               int is_function_definition,
  47                               int nr_prefetched_words)
  48 {
  49   lf_printf (file, "\n");
  50   lf_print__function_type_function (file, print_icache_function_type,
  51                                     "EXTERN_ICACHE", " ");
  52   print_function_name (file,
  53                        basename, format_name, NULL,
  54                        expanded_bits, function_name_prefix_icache);
  55   lf_printf (file, "\n(");
  56   print_icache_function_formal (file, nr_prefetched_words);
  57   lf_printf (file, ")");
  58   if (!is_function_definition)
  59     lf_printf (file, ";");
  60   lf_printf (file, "\n");
  61 }
  62
  63
  64 void
  65 print_icache_declaration (lf *file,
  66                           const insn_entry *insn,
  67                           const opcode_bits *expanded_bits,
  68                           const insn_opcodes *opcodes,
  69                           int nr_prefetched_words)
  70 {
  71   print_icache_function_header (file,
  72                                 insn->name,
  73                                 insn->format_name,
  74                                 expanded_bits,
  75                                 0 /* is not function definition */ ,
  76                                 nr_prefetched_words);
  77 }
  78
  79
  80
  81 static void
  82 print_icache_extraction (lf *file,
  83                          const char *format_name,
  84                          cache_entry_type cache_type,
  85                          const char *entry_name,
  86                          const char *entry_type,
  87                          const char *entry_expression,
  88                          const char *single_insn_field,
  89                          line_ref *line,
  90                          insn_field_entry *cur_field,
  91                          const opcode_bits *expanded_bits,
  92                          icache_decl_type what_to_declare,
  93                          icache_body_type what_to_do)
  94 {
  95   const char *expression;
  96   const opcode_bits *bits;
  97   const char *reason;
  98   ASSERT (format_name != NULL);
  99   ASSERT (entry_name != NULL);
 100
 101   /* figure out exactly what should be going on here */
 102   switch (cache_type)
 103     {
 104     case scratch_value:
 105       if ((what_to_do & put_values_in_icache)
 106           || what_to_do == do_not_use_icache)
 107         {
 108           reason = "scratch";
 109           what_to_do = do_not_use_icache;
 110         }
 111       else
 112         return;
 113       break;
 114     case compute_value:
 115       if ((what_to_do & get_values_from_icache)
 116           || what_to_do == do_not_use_icache)
 117         {
 118           reason = "compute";
 119           what_to_do = do_not_use_icache;
 120         }
 121       else
 122         return;
 123       break;
 124     case cache_value:
 125       if ((what_to_declare != undef_variables)
 126           || !(what_to_do & put_values_in_icache))
 127         {
 128           reason = "cache";
 129           what_to_declare = ((what_to_do & put_values_in_icache)
 130                              ? declare_variables : what_to_declare);
 131         }
 132       else
 133         return;
 134       break;
 135     default:
 136       abort ();                 /* Bad switch.  */
 137     }
 138
 139   /* For the type, default to a simple unsigned */
 140   if (entry_type == NULL || strlen (entry_type) == 0)
 141     entry_type = "unsigned";
 142
 143   /* look through the set of expanded sub fields to see if this field
 144      has been given a constant value */
 145   for (bits = expanded_bits; bits != NULL; bits = bits->next)
 146     {
 147       if (bits->field == cur_field)
 148         break;
 149     }
 150
 151   /* Define a storage area for the cache element */
 152   switch (what_to_declare)
 153     {
 154     case undef_variables:
 155       /* We've finished with the #define value - destroy it */
 156       lf_indent_suppress (file);
 157       lf_printf (file, "#undef %s\n", entry_name);
 158       return;
 159     case define_variables:
 160       /* Using direct access for this entry, clear any prior
 161          definition, then define it */
 162       lf_indent_suppress (file);
 163       lf_printf (file, "#undef %s\n", entry_name);
 164       /* Don't type cast pointer types! */
 165       lf_indent_suppress (file);
 166       if (strchr (entry_type, '*') != NULL)
 167         lf_printf (file, "#define %s (", entry_name);
 168       else
 169         lf_printf (file, "#define %s ((%s) ", entry_name, entry_type);
 170       break;
 171     case declare_variables:
 172       /* using variables to define the value */
 173       if (line != NULL)
 174         lf_print__line_ref (file, line);
 175       lf_printf (file, "%s const %s UNUSED = ", entry_type, entry_name);
 176       break;
 177     }
 178
 179
 180   /* define a value for that storage area as determined by what is in
 181      the cache */
 182   if (bits != NULL
 183       && single_insn_field != NULL
 184       && strcmp (entry_name, single_insn_field) == 0
 185       && strcmp (entry_name, cur_field->val_string) == 0
 186       && ((bits->opcode->is_boolean && bits->value == 0)
 187           || (!bits->opcode->is_boolean)))
 188     {
 189       /* The cache rule is specifying what to do with a simple
 190          instruction field.
 191
 192          Because of instruction expansion, the field is either a
 193          constant value or equal to the specified constant (boolean
 194          comparison). (The latter indicated by bits->value == 0).
 195
 196          The case of a field not being equal to the specified boolean
 197          value is handled later. */
 198       expression = "constant field";
 199       ASSERT (bits->field == cur_field);
 200       if (bits->opcode->is_boolean)
 201         {
 202           ASSERT (bits->value == 0);
 203           lf_printf (file, "%d", bits->opcode->boolean_constant);
 204         }
 205       else if (bits->opcode->last < bits->field->last)
 206         {
 207           lf_printf (file, "%d",
 208                      bits->value << (bits->field->last - bits->opcode->last));
 209         }
 210       else
 211         {
 212           lf_printf (file, "%d", bits->value);
 213         }
 214     }
 215   else if (bits != NULL
 216            && single_insn_field != NULL
 217            && strncmp (entry_name,
 218                        single_insn_field,
 219                        strlen (single_insn_field)) == 0
 220            && strncmp (entry_name + strlen (single_insn_field),
 221                        "_is_",
 222                        strlen ("_is_")) == 0
 223            && ((bits->opcode->is_boolean
 224                 && ((unsigned)
 225                     atol (entry_name + strlen (single_insn_field) +
 226                           strlen ("_is_")) == bits->opcode->boolean_constant))
 227                || (!bits->opcode->is_boolean)))
 228     {
 229       /* The cache rule defines an entry for the comparison between a
 230          single instruction field and a constant.  The value of the
 231          comparison in someway matches that of the opcode field that
 232          was made constant through expansion. */
 233       expression = "constant compare";
 234       if (bits->opcode->is_boolean)
 235         {
 236           lf_printf (file, "%d /* %s == %d */",
 237                      bits->value == 0,
 238                      single_insn_field, bits->opcode->boolean_constant);
 239         }
 240       else if (bits->opcode->last < bits->field->last)
 241         {
 242           lf_printf (file, "%d /* %s == %d */",
 243                      (atol
 244                       (entry_name + strlen (single_insn_field) +
 245                        strlen ("_is_")) ==
 246                       (bits->
 247                        value << (bits->field->last - bits->opcode->last))),
 248                      single_insn_field,
 249                      (bits->
 250                       value << (bits->field->last - bits->opcode->last)));
 251         }
 252       else
 253         {
 254           lf_printf (file, "%d /* %s == %d */",
 255                      (atol
 256                       (entry_name + strlen (single_insn_field) +
 257                        strlen ("_is_")) == bits->value), single_insn_field,
 258                      bits->value);
 259         }
 260     }
 261   else
 262     {
 263       /* put the field in the local variable, possibly also enter it
 264          into the cache */
 265       expression = "extraction";
 266       /* handle the cache */
 267       if ((what_to_do & get_values_from_icache)
 268           || (what_to_do & put_values_in_icache))
 269         {
 270           lf_printf (file, "cache_entry->crack.%s.%s",
 271                      format_name, entry_name);
 272           if (what_to_do & put_values_in_icache)        /* also put it in the cache? */
 273             {
 274               lf_printf (file, " = ");
 275             }
 276         }
 277       if ((what_to_do & put_values_in_icache)
 278           || what_to_do == do_not_use_icache)
 279         {
 280           if (cur_field != NULL)
 281             {
 282               if (entry_expression != NULL && strlen (entry_expression) > 0)
 283                 error (line,
 284                        "Instruction field entry with nonempty expression\n");
 285               if (cur_field->first == 0
 286                   && cur_field->last == options.insn_bit_size - 1)
 287                 lf_printf (file, "(instruction_%d)", cur_field->word_nr);
 288               else if (cur_field->last == options.insn_bit_size - 1)
 289                 lf_printf (file, "MASKED%d (instruction_%d, %d, %d)",
 290                            options.insn_bit_size,
 291                            cur_field->word_nr,
 292                            i2target (options.hi_bit_nr, cur_field->first),
 293                            i2target (options.hi_bit_nr, cur_field->last));
 294               else
 295                 lf_printf (file, "EXTRACTED%d (instruction_%d, %d, %d)",
 296                            options.insn_bit_size,
 297                            cur_field->word_nr,
 298                            i2target (options.hi_bit_nr, cur_field->first),
 299                            i2target (options.hi_bit_nr, cur_field->last));
 300             }
 301           else
 302             {
 303               lf_printf (file, "%s", entry_expression);
 304             }
 305         }
 306     }
 307
 308   switch (what_to_declare)
 309     {
 310     case define_variables:
 311       lf_printf (file, ")");
 312       break;
 313     case undef_variables:
 314       break;
 315     case declare_variables:
 316       lf_printf (file, ";");
 317       break;
 318     }
 319
 320   ASSERT (reason != NULL && expression != NULL);
 321   lf_printf (file, " /* %s - %s */\n", reason, expression);
 322 }
 323
 324
 325 void
 326 print_icache_body (lf *file,
 327                    const insn_entry *instruction,
 328                    const opcode_bits *expanded_bits,
 329                    cache_entry *cache_rules,
 330                    icache_decl_type what_to_declare,
 331                    icache_body_type what_to_do, int nr_prefetched_words)
 332 {
 333   /* extract instruction fields */
 334   lf_printf (file, "/* Extraction: %s\n", instruction->name);
 335   lf_printf (file, "     ");
 336   switch (what_to_declare)
 337     {
 338     case define_variables:
 339       lf_printf (file, "#define");
 340       break;
 341     case declare_variables:
 342       lf_printf (file, "declare");
 343       break;
 344     case undef_variables:
 345       lf_printf (file, "#undef");
 346       break;
 347     }
 348   lf_printf (file, " ");
 349   switch (what_to_do)
 350     {
 351     case get_values_from_icache:
 352       lf_printf (file, "get-values-from-icache");
 353       break;
 354     case put_values_in_icache:
 355       lf_printf (file, "put-values-in-icache");
 356       break;
 357     case both_values_and_icache:
 358       lf_printf (file, "get-values-from-icache|put-values-in-icache");
 359       break;
 360     case do_not_use_icache:
 361       lf_printf (file, "do-not-use-icache");
 362       break;
 363     }
 364   lf_printf (file, "\n     ");
 365   print_insn_words (file, instruction);
 366   lf_printf (file, " */\n");
 367
 368   /* pass zero - fetch from memory any missing instructions.
 369
 370      Some of the instructions will have already been fetched (in the
 371      instruction array), others will still need fetching. */
 372   switch (what_to_do)
 373     {
 374     case get_values_from_icache:
 375       break;
 376     case put_values_in_icache:
 377     case both_values_and_icache:
 378     case do_not_use_icache:
 379       {
 380         int word_nr;
 381         switch (what_to_declare)
 382           {
 383           case undef_variables:
 384             break;
 385           case define_variables:
 386           case declare_variables:
 387             for (word_nr = nr_prefetched_words;
 388                  word_nr < instruction->nr_words; word_nr++)
 389               {
 390                 /* FIXME - should be using print_icache_extraction? */
 391                 lf_printf (file,
 392                            "%sinstruction_word instruction_%d UNUSED = ",
 393                            options.module.global.prefix.l, word_nr);
 394                 lf_printf (file, "IMEM%d_IMMED (cia, %d)",
 395                            options.insn_bit_size, word_nr);
 396                 lf_printf (file, ";\n");
 397               }
 398           }
 399       }
 400     }
 401
 402   /* if putting the instruction words in the cache, define references
 403      for them */
 404   if (options.gen.insn_in_icache)
 405     {
 406       /* FIXME: is the instruction_word type correct? */
 407       print_icache_extraction (file, instruction->format_name, cache_value, "insn",     /* name */
 408                                "instruction_word",      /* type */
 409                                "instruction",   /* expression */
 410                                NULL,    /* origin */
 411                                NULL,    /* line */
 412                                NULL, NULL, what_to_declare, what_to_do);
 413     }
 414   lf_printf (file, "\n");
 415
 416   /* pass one - process instruction fields.
 417
 418      If there is no cache rule, the default is to enter the field into
 419      the cache */
 420   {
 421     insn_word_entry *word;
 422     for (word = instruction->words; word != NULL; word = word->next)
 423       {
 424         insn_field_entry *cur_field;
 425         for (cur_field = word->first;
 426              cur_field->first < options.insn_bit_size;
 427              cur_field = cur_field->next)
 428           {
 429             /* Always expand named fields (even if constant), so
 430                references are valid.  */
 431             if (cur_field->type == insn_field_string)
 432               {
 433                 cache_entry *cache_rule;
 434                 cache_entry_type value_type = cache_value;
 435                 line_ref *value_line = instruction->line;
 436                 /* check the cache table to see if it contains a rule
 437                    overriding the default cache action for an
 438                    instruction field */
 439                 for (cache_rule = cache_rules;
 440                      cache_rule != NULL; cache_rule = cache_rule->next)
 441                   {
 442                     if (filter_is_subset (instruction->field_names,
 443                                           cache_rule->original_fields)
 444                         && strcmp (cache_rule->name,
 445                                    cur_field->val_string) == 0)
 446                       {
 447                         value_type = cache_rule->entry_type;
 448                         value_line = cache_rule->line;
 449                         if (value_type == compute_value)
 450                           {
 451                             options.warning (cache_rule->line,
 452                                              "instruction field of type `compute' changed to `cache'\n");
 453                             cache_rule->entry_type = cache_value;
 454                           }
 455                         break;
 456                       }
 457                   }
 458                 /* Define an entry for the field within the
 459                    instruction */
 460                 print_icache_extraction (file, instruction->format_name, value_type, cur_field->val_string,     /* name */
 461                                          NULL,  /* type */
 462                                          NULL,  /* expression */
 463                                          cur_field->val_string, /* insn field */
 464                                          value_line,
 465                                          cur_field,
 466                                          expanded_bits,
 467                                          what_to_declare, what_to_do);
 468               }
 469           }
 470       }
 471   }
 472
 473   /* pass two - any cache fields not processed above */
 474   {
 475     cache_entry *cache_rule;
 476     for (cache_rule = cache_rules;
 477          cache_rule != NULL; cache_rule = cache_rule->next)
 478       {
 479         if (filter_is_subset (instruction->field_names,
 480                               cache_rule->original_fields)
 481             && !filter_is_member (instruction->field_names, cache_rule->name))
 482           {
 483             const char *single_field =
 484               filter_next (cache_rule->original_fields, "");
 485             if (filter_next (cache_rule->original_fields, single_field) !=
 486                 NULL)
 487               single_field = NULL;
 488             print_icache_extraction (file, instruction->format_name, cache_rule->entry_type, cache_rule->name, cache_rule->type, cache_rule->expression, single_field, cache_rule->line, NULL,  /* cur_field */
 489                                      expanded_bits,
 490                                      what_to_declare, what_to_do);
 491           }
 492       }
 493   }
 494
 495   lf_print__internal_ref (file);
 496 }
 497
 498
 499
 500 typedef struct _form_fields form_fields;
 501 struct _form_fields
 502 {
 503   char *name;
 504   filter *fields;
 505   form_fields *next;
 506 };
 507
 508 static form_fields *
 509 insn_table_cache_fields (const insn_table *isa)
 510 {
 511   form_fields *forms = NULL;
 512   insn_entry *insn;
 513   for (insn = isa->insns; insn != NULL; insn = insn->next)
 514     {
 515       form_fields **form = &forms;
 516       while (1)
 517         {
 518           if (*form == NULL)
 519             {
 520               /* new format name, add it */
 521               form_fields *new_form = ZALLOC (form_fields);
 522               new_form->name = insn->format_name;
 523               filter_add (&new_form->fields, insn->field_names);
 524               *form = new_form;
 525               break;
 526             }
 527           else if (strcmp ((*form)->name, insn->format_name) == 0)
 528             {
 529               /* already present, add field names to the existing list */
 530               filter_add (&(*form)->fields, insn->field_names);
 531               break;
 532             }
 533           form = &(*form)->next;
 534         }
 535     }
 536   return forms;
 537 }
 538
 539
 540
 541 extern void
 542 print_icache_struct (lf *file, const insn_table *isa, cache_entry *cache_rules)
 543 {
 544   /* Create a list of all the different instruction formats with their
 545      corresponding field names. */
 546   form_fields *formats = insn_table_cache_fields (isa);
 547
 548   lf_printf (file, "\n");
 549   lf_printf (file, "#define WITH_%sIDECODE_CACHE_SIZE %d\n",
 550              options.module.global.prefix.u,
 551              (options.gen.icache ? options.gen.icache_size : 0));
 552   lf_printf (file, "\n");
 553
 554   /* create an instruction cache if being used */
 555   if (options.gen.icache)
 556     {
 557       lf_printf (file, "typedef struct _%sidecode_cache {\n",
 558                  options.module.global.prefix.l);
 559       lf_indent (file, +2);
 560       {
 561         form_fields *format;
 562         lf_printf (file, "unsigned_word address;\n");
 563         lf_printf (file, "void *semantic;\n");
 564         lf_printf (file, "union {\n");
 565         lf_indent (file, +2);
 566         for (format = formats; format != NULL; format = format->next)
 567           {
 568             lf_printf (file, "struct {\n");
 569             lf_indent (file, +2);
 570             {
 571               cache_entry *cache_rule;
 572               const char *field;
 573               /* space for any instruction words */
 574               if (options.gen.insn_in_icache)
 575                 lf_printf (file, "instruction_word insn[%d];\n",
 576                            isa->max_nr_words);
 577               /* define an entry for any applicable cache rules */
 578               for (cache_rule = cache_rules;
 579                    cache_rule != NULL; cache_rule = cache_rule->next)
 580                 {
 581                   /* nb - sort of correct - should really check against
 582                      individual instructions */
 583                   if (filter_is_subset
 584                       (format->fields, cache_rule->original_fields))
 585                     {
 586                       const char *memb;
 587                       lf_printf (file, "%s %s;",
 588                                  (cache_rule->type == NULL
 589                                   ? "unsigned"
 590                                   : cache_rule->type), cache_rule->name);
 591                       lf_printf (file, " /*");
 592                       for (memb =
 593                            filter_next (cache_rule->original_fields, "");
 594                            memb != NULL;
 595                            memb =
 596                            filter_next (cache_rule->original_fields, memb))
 597                         {
 598                           lf_printf (file, " %s", memb);
 599                         }
 600                       lf_printf (file, " */\n");
 601                     }
 602                 }
 603               /* define an entry for any fields not covered by a cache rule */
 604               for (field = filter_next (format->fields, "");
 605                    field != NULL; field = filter_next (format->fields, field))
 606                 {
 607                   cache_entry *cache_rule;
 608                   int found_rule = 0;
 609                   for (cache_rule = cache_rules;
 610                        cache_rule != NULL; cache_rule = cache_rule->next)
 611                     {
 612                       if (strcmp (cache_rule->name, field) == 0)
 613                         {
 614                           found_rule = 1;
 615                           break;
 616                         }
 617                     }
 618                   if (!found_rule)
 619                     lf_printf (file, "unsigned %s; /* default */\n", field);
 620                 }
 621             }
 622             lf_indent (file, -2);
 623             lf_printf (file, "} %s;\n", format->name);
 624           }
 625         lf_indent (file, -2);
 626         lf_printf (file, "} crack;\n");
 627       }
 628       lf_indent (file, -2);
 629       lf_printf (file, "} %sidecode_cache;\n",
 630                  options.module.global.prefix.l);
 631     }
 632   else
 633     {
 634       /* alernativly, since no cache, emit a dummy definition for
 635          idecode_cache so that code referring to the type can still compile */
 636       lf_printf (file, "typedef void %sidecode_cache;\n",
 637                  options.module.global.prefix.l);
 638     }
 639   lf_printf (file, "\n");
 640 }
 641
 642
 643
 644 static void
 645 print_icache_function (lf *file,
 646                        const insn_entry *instruction,
 647                        const opcode_bits *expanded_bits,
 648                        const insn_opcodes *opcodes,
 649                        cache_entry *cache_rules, int nr_prefetched_words)
 650 {
 651   int indent;
 652
 653   /* generate code to enter decoded instruction into the icache */
 654   lf_printf (file, "\n");
 655   lf_print__function_type_function (file, print_icache_function_type,
 656                                     "EXTERN_ICACHE", "\n");
 657   indent = print_function_name (file,
 658                                 instruction->name,
 659                                 instruction->format_name,
 660                                 NULL,
 661                                 expanded_bits, function_name_prefix_icache);
 662   indent += lf_printf (file, " ");
 663   lf_indent (file, +indent);
 664   lf_printf (file, "(");
 665   print_icache_function_formal (file, nr_prefetched_words);
 666   lf_printf (file, ")\n");
 667   lf_indent (file, -indent);
 668
 669   /* function header */
 670   lf_printf (file, "{\n");
 671   lf_indent (file, +2);
 672
 673   print_my_defines (file,
 674                     instruction->name,
 675                     instruction->format_name, expanded_bits);
 676   print_itrace (file, instruction, 1 /*putting-value-in-cache */ );
 677
 678   print_idecode_validate (file, instruction, opcodes);
 679
 680   lf_printf (file, "\n");
 681   lf_printf (file, "{\n");
 682   lf_indent (file, +2);
 683   if (options.gen.semantic_icache)
 684     lf_printf (file, "unsigned_word nia;\n");
 685   print_icache_body (file,
 686                      instruction,
 687                      expanded_bits,
 688                      cache_rules,
 689                      (options.gen.direct_access
 690                       ? define_variables
 691                       : declare_variables),
 692                      (options.gen.semantic_icache
 693                       ? both_values_and_icache
 694                       : put_values_in_icache), nr_prefetched_words);
 695
 696   lf_printf (file, "\n");
 697   lf_printf (file, "cache_entry->address = cia;\n");
 698   lf_printf (file, "cache_entry->semantic = ");
 699   print_function_name (file,
 700                        instruction->name,
 701                        instruction->format_name,
 702                        NULL, expanded_bits, function_name_prefix_semantics);
 703   lf_printf (file, ";\n");
 704   lf_printf (file, "\n");
 705
 706   if (options.gen.semantic_icache)
 707     {
 708       lf_printf (file, "/* semantic routine */\n");
 709       print_semantic_body (file, instruction, expanded_bits, opcodes);
 710       lf_printf (file, "return nia;\n");
 711     }
 712
 713   if (!options.gen.semantic_icache)
 714     {
 715       lf_printf (file, "/* return the function proper */\n");
 716       lf_printf (file, "return ");
 717       print_function_name (file,
 718                            instruction->name,
 719                            instruction->format_name,
 720                            NULL,
 721                            expanded_bits, function_name_prefix_semantics);
 722       lf_printf (file, ";\n");
 723     }
 724
 725   if (options.gen.direct_access)
 726     {
 727       print_icache_body (file,
 728                          instruction,
 729                          expanded_bits,
 730                          cache_rules,
 731                          undef_variables,
 732                          (options.gen.semantic_icache
 733                           ? both_values_and_icache
 734                           : put_values_in_icache), nr_prefetched_words);
 735     }
 736
 737   lf_indent (file, -2);
 738   lf_printf (file, "}\n");
 739   lf_indent (file, -2);
 740   lf_printf (file, "}\n");
 741 }
 742
 743
 744 void
 745 print_icache_definition (lf *file,
 746                          const insn_entry *insn,
 747                          const opcode_bits *expanded_bits,
 748                          const insn_opcodes *opcodes,
 749                          cache_entry *cache_rules, int nr_prefetched_words)
 750 {
 751   print_icache_function (file,
 752                          insn,
 753                          expanded_bits,
 754                          opcodes, cache_rules, nr_prefetched_words);
 755 }
 756
 757
 758
 759 void
 760 print_icache_internal_function_declaration (lf *file,
 761                                             const function_entry *function,
 762                                             void *data)
 763 {
 764   ASSERT (options.gen.icache);
 765   if (function->is_internal)
 766     {
 767       lf_printf (file, "\n");
 768       lf_print__function_type_function (file, print_icache_function_type,
 769                                         "INLINE_ICACHE", "\n");
 770       print_function_name (file,
 771                            function->name,
 772                            NULL, NULL, NULL, function_name_prefix_icache);
 773       lf_printf (file, "\n(");
 774       print_icache_function_formal (file, 0);
 775       lf_printf (file, ");\n");
 776     }
 777 }
 778
 779
 780 void
 781 print_icache_internal_function_definition (lf *file,
 782                                            const function_entry *function,
 783                                            void *data)
 784 {
 785   ASSERT (options.gen.icache);
 786   if (function->is_internal)
 787     {
 788       lf_printf (file, "\n");
 789       lf_print__function_type_function (file, print_icache_function_type,
 790                                         "INLINE_ICACHE", "\n");
 791       print_function_name (file,
 792                            function->name,
 793                            NULL, NULL, NULL, function_name_prefix_icache);
 794       lf_printf (file, "\n(");
 795       print_icache_function_formal (file, 0);
 796       lf_printf (file, ")\n");
 797       lf_printf (file, "{\n");
 798       lf_indent (file, +2);
 799       lf_printf (file, "/* semantic routine */\n");
 800       if (options.gen.semantic_icache)
 801         {
 802           lf_print__line_ref (file, function->code->line);
 803           table_print_code (file, function->code);
 804           lf_printf (file,
 805                      "error (\"Internal function must longjump\\n\");\n");
 806           lf_printf (file, "return 0;\n");
 807         }
 808       else
 809         {
 810           lf_printf (file, "return ");
 811           print_function_name (file,
 812                                function->name,
 813                                NULL,
 814                                NULL, NULL, function_name_prefix_semantics);
 815           lf_printf (file, ";\n");
 816         }
 817
 818       lf_print__internal_ref (file);
 819       lf_indent (file, -2);
 820       lf_printf (file, "}\n");
 821     }
 822 }