sim/igen/gen-icache.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #include "misc.h"
  23 #include "lf.h"
  24 #include "table.h"
  25 #include "filter.h"
  26 #include "igen.h"
  27
  28 #include "ld-insn.h"
  29 #include "ld-decode.h"
  30
  31 #include "gen.h"
  32
  33 #include "gen-semantics.h"
  34 #include "gen-idecode.h"
  35 #include "gen-icache.h"
  36
  37
  38
  39 static void
  40 print_icache_function_header (lf *file,
  41                               const char *basename,
  42                               const char *format_name,
  43                               opcode_bits *expanded_bits,
  44                               int is_function_definition,
  45                               int nr_prefetched_words)
  46 {
  47   lf_printf(file, "\n");
  48   lf_print__function_type_function (file, print_icache_function_type,
  49                                     "EXTERN_ICACHE", " ");
  50   print_function_name (file,
  51                        basename, format_name, NULL,
  52                        expanded_bits,
  53                        function_name_prefix_icache);
  54   lf_printf (file, "\n(");
  55   print_icache_function_formal (file, nr_prefetched_words);
  56   lf_printf (file, ")");
  57   if (!is_function_definition)
  58     lf_printf (file, ";");
  59   lf_printf (file, "\n");
  60 }
  61
  62
  63 void
  64 print_icache_declaration (lf *file,
  65                           insn_entry *insn,
  66                           opcode_bits *expanded_bits,
  67                           insn_opcodes *opcodes,
  68                           int nr_prefetched_words)
  69 {
  70   print_icache_function_header (file,
  71                                 insn->name,
  72                                 insn->format_name,
  73                                 expanded_bits,
  74                                 0/* is not function definition */,
  75                                 nr_prefetched_words);
  76 }
  77
  78
  79
  80 static void
  81 print_icache_extraction (lf *file,
  82                          const char *format_name,
  83                          cache_entry_type cache_type,
  84                          const char *entry_name,
  85                          const char *entry_type,
  86                          const char *entry_expression,
  87                          char *single_insn_field,
  88                          line_ref *line,
  89                          insn_field_entry *cur_field,
  90                          opcode_bits *expanded_bits,
  91                          icache_decl_type what_to_declare,
  92                          icache_body_type what_to_do)
  93 {
  94   const char *expression;
  95   opcode_bits *bits;
  96   char *reason;
  97   ASSERT (format_name != NULL);
  98   ASSERT (entry_name != NULL);
  99
 100   /* figure out exactly what should be going on here */
 101   switch (cache_type)
 102     {
 103     case scratch_value:
 104       if ((what_to_do & put_values_in_icache)
 105           || what_to_do == do_not_use_icache)
 106         {
 107           reason = "scratch";
 108           what_to_do = do_not_use_icache;
 109         }
 110       else
 111         return;
 112       break;
 113     case compute_value:
 114       if ((what_to_do & get_values_from_icache)
 115           || what_to_do == do_not_use_icache)
 116         {
 117           reason = "compute";
 118           what_to_do = do_not_use_icache;
 119         }
 120       else
 121         return;
 122       break;
 123     case cache_value:
 124       if ((what_to_declare != undef_variables)
 125           || !(what_to_do & put_values_in_icache))
 126         {
 127           reason = "cache";
 128           what_to_declare = ((what_to_do & put_values_in_icache)
 129                              ? declare_variables
 130                              : what_to_declare);
 131         }
 132       else
 133         return;
 134       break;
 135     }
 136
 137   /* For the type, default to a simple unsigned */
 138   if (entry_type == NULL || strlen (entry_type) == 0)
 139     entry_type = "unsigned";
 140
 141   /* look through the set of expanded sub fields to see if this field
 142      has been given a constant value */
 143   for (bits = expanded_bits;
 144        bits != NULL;
 145        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 - destory 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) atol (entry_name + strlen (single_insn_field) + strlen ("_is_"))
 225                     == bits->opcode->boolean_constant))
 226                || (!bits->opcode->is_boolean)))
 227     {
 228       /* The cache rule defines an entry for the comparison between a
 229          single instruction field and a constant.  The value of the
 230          comparison in someway matches that of the opcode field that
 231          was made constant through expansion. */
 232       expression = "constant compare";
 233       if (bits->opcode->is_boolean)
 234         {
 235           lf_printf (file, "%d /* %s == %d */",
 236                      bits->value == 0,
 237                      single_insn_field,
 238                      bits->opcode->boolean_constant);
 239         }
 240       else if (bits->opcode->last < bits->field->last)
 241         {
 242           lf_printf (file, "%d /* %s == %d */",
 243                      (atol (entry_name + strlen (single_insn_field) + strlen ("_is_"))
 244                       == (bits->value << (bits->field->last - bits->opcode->last))),
 245                      single_insn_field,
 246                      (bits->value << (bits->field->last - bits->opcode->last)));
 247         }
 248       else
 249         {
 250           lf_printf (file, "%d /* %s == %d */",
 251                      (atol (entry_name + strlen (single_insn_field) + strlen ("_is_"))
 252                       == bits->value),
 253                      single_insn_field,
 254                      bits->value);
 255         }
 256     }
 257   else
 258     {
 259       /* put the field in the local variable, possibly also enter it
 260          into the cache */
 261       expression = "extraction";
 262       /* handle the cache */
 263       if ((what_to_do & get_values_from_icache)
 264           || (what_to_do & put_values_in_icache))
 265         {
 266           lf_printf (file, "cache_entry->crack.%s.%s",
 267                      format_name,
 268                      entry_name);
 269           if (what_to_do & put_values_in_icache) /* also put it in the cache? */
 270             {
 271               lf_printf (file, " = ");
 272             }
 273         }
 274       if ((what_to_do & put_values_in_icache)
 275           || what_to_do == do_not_use_icache)
 276         {
 277           if (cur_field != NULL)
 278             {
 279               if (entry_expression != NULL && strlen (entry_expression) > 0)
 280                 error (line, "Instruction field entry with nonempty expression\n");
 281               if (cur_field->first == 0 && cur_field->last == options.insn_bit_size - 1)
 282                 lf_printf (file, "(instruction_%d)",
 283                            cur_field->word_nr);
 284               else if (cur_field->last == options.insn_bit_size - 1)
 285                 lf_printf (file, "MASKED%d (instruction_%d, %d, %d)",
 286                            options.insn_bit_size,
 287                            cur_field->word_nr,
 288                            i2target (options.hi_bit_nr, cur_field->first),
 289                            i2target (options.hi_bit_nr, cur_field->last));
 290               else
 291                 lf_printf (file, "EXTRACTED%d (instruction_%d, %d, %d)",
 292                            options.insn_bit_size,
 293                            cur_field->word_nr,
 294                            i2target (options.hi_bit_nr, cur_field->first),
 295                            i2target (options.hi_bit_nr, cur_field->last));
 296             }
 297           else
 298             {
 299               lf_printf (file, "%s", entry_expression);
 300             }
 301         }
 302     }
 303
 304   switch (what_to_declare)
 305     {
 306     case define_variables:
 307       lf_printf (file, ")");
 308       break;
 309     case undef_variables:
 310       break;
 311     case declare_variables:
 312       lf_printf (file, ";");
 313       break;
 314     }
 315
 316   ASSERT (reason != NULL && expression != NULL);
 317   lf_printf (file, " /* %s - %s */\n", reason, expression);
 318 }
 319
 320
 321 void
 322 print_icache_body (lf *file,
 323                    insn_entry *instruction,
 324                    opcode_bits *expanded_bits,
 325                    cache_entry *cache_rules,
 326                    icache_decl_type what_to_declare,
 327                    icache_body_type what_to_do,
 328                    int nr_prefetched_words)
 329 {
 330   /* extract instruction fields */
 331   lf_printf (file, "/* Extraction: %s\n", instruction->name);
 332   lf_printf (file, "     ");
 333   switch (what_to_declare)
 334     {
 335     case define_variables:
 336       lf_printf (file, "#define");
 337       break;
 338     case declare_variables:
 339       lf_printf (file, "declare");
 340       break;
 341     case undef_variables:
 342       lf_printf (file, "#undef");
 343       break;
 344     }
 345   lf_printf (file, " ");
 346   switch (what_to_do)
 347     {
 348     case get_values_from_icache:
 349       lf_printf (file, "get-values-from-icache");
 350       break;
 351     case put_values_in_icache:
 352       lf_printf (file, "put-values-in-icache");
 353       break;
 354     case both_values_and_icache:
 355       lf_printf (file, "get-values-from-icache|put-values-in-icache");
 356       break;
 357     case do_not_use_icache:
 358       lf_printf (file, "do-not-use-icache");
 359       break;
 360     }
 361   lf_printf (file, "\n     ");
 362   print_insn_words (file, instruction);
 363   lf_printf(file, " */\n");
 364
 365   /* pass zero - fetch from memory any missing instructions.
 366
 367      Some of the instructions will have already been fetched (in the
 368      instruction array), others will still need fetching. */
 369   switch (what_to_do)
 370     {
 371     case get_values_from_icache:
 372       break;
 373     case put_values_in_icache:
 374     case both_values_and_icache:
 375     case do_not_use_icache:
 376       {
 377         int word_nr;
 378         switch (what_to_declare)
 379           {
 380           case undef_variables:
 381             break;
 382           case define_variables:
 383           case declare_variables:
 384             for (word_nr = nr_prefetched_words;
 385                  word_nr < instruction->nr_words;
 386                  word_nr++)
 387               {
 388                 /* FIXME - should be using print_icache_extraction? */
 389                 lf_printf (file, "%sinstruction_word instruction_%d UNUSED = ",
 390                            options.module.global.prefix.l,
 391                            word_nr);
 392                 lf_printf (file, "IMEM%d_IMMED (cia, %d)",
 393                            options.insn_bit_size, word_nr);
 394                 lf_printf (file, ";\n");
 395               }
 396           }
 397       }
 398     }
 399
 400   /* if putting the instruction words in the cache, define references
 401      for them */
 402   if (options.gen.insn_in_icache) {
 403     /* FIXME: is the instruction_word type correct? */
 404     print_icache_extraction (file,
 405                              instruction->format_name,
 406                              cache_value,
 407                              "insn", /* name */
 408                              "instruction_word", /* type */
 409                              "instruction", /* expression */
 410                              NULL, /* origin */
 411                              NULL, /* line */
 412                              NULL, NULL,
 413                              what_to_declare,
 414                              what_to_do);
 415   }
 416   lf_printf(file, "\n");
 417
 418   /* pass one - process instruction fields.
 419
 420      If there is no cache rule, the default is to enter the field into
 421      the cache */
 422   {
 423     insn_word_entry *word;
 424     for (word = instruction->words;
 425          word != NULL;
 426          word = word->next)
 427       {
 428         insn_field_entry *cur_field;
 429         for (cur_field = word->first;
 430              cur_field->first < options.insn_bit_size;
 431              cur_field = cur_field->next)
 432           {
 433             if (cur_field->type == insn_field_string)
 434               {
 435                 cache_entry *cache_rule;
 436                 cache_entry_type value_type = cache_value;
 437                 line_ref *value_line = instruction->line;
 438                 /* check the cache table to see if it contains a rule
 439                    overriding the default cache action for an
 440                    instruction field */
 441                 for (cache_rule = cache_rules;
 442                      cache_rule != NULL;
 443                      cache_rule = cache_rule->next)
 444                   {
 445                     if (filter_is_subset (instruction->field_names,
 446                                           cache_rule->original_fields)
 447                         && strcmp (cache_rule->name, cur_field->val_string) == 0)
 448                       {
 449                         value_type = cache_rule->entry_type;
 450                         value_line = cache_rule->line;
 451                         if (value_type == compute_value)
 452                           {
 453                             options.warning (cache_rule->line,
 454                                              "instruction field of type `compute' changed to `cache'\n");
 455                             cache_rule->entry_type = cache_value;
 456                           }
 457                         break;
 458                       }
 459                   }
 460                 /* Define an entry for the field within the
 461                    instruction */
 462                 print_icache_extraction (file,
 463                                          instruction->format_name,
 464                                          value_type,
 465                                          cur_field->val_string, /* name */
 466                                          NULL, /* type */
 467                                          NULL, /* expression */
 468                                          cur_field->val_string, /* insn field */
 469                                          value_line,
 470                                          cur_field,
 471                                          expanded_bits,
 472                                          what_to_declare,
 473                                          what_to_do);
 474               }
 475           }
 476       }
 477   }
 478
 479   /* pass two - any cache fields not processed above */
 480   {
 481     cache_entry *cache_rule;
 482     for (cache_rule = cache_rules;
 483          cache_rule != NULL;
 484          cache_rule = cache_rule->next)
 485       {
 486         if (filter_is_subset (instruction->field_names,
 487                               cache_rule->original_fields)
 488             && !filter_is_member (instruction->field_names,
 489                                   cache_rule->name))
 490           {
 491             char *single_field = filter_next (cache_rule->original_fields, "");
 492             if (filter_next (cache_rule->original_fields, single_field) != NULL)
 493               single_field = NULL;
 494             print_icache_extraction (file,
 495                                      instruction->format_name,
 496                                      cache_rule->entry_type,
 497                                      cache_rule->name,
 498                                      cache_rule->type,
 499                                      cache_rule->expression,
 500                                      single_field,
 501                                      cache_rule->line,
 502                                      NULL, /* cur_field */
 503                                      expanded_bits,
 504                                      what_to_declare,
 505                                      what_to_do);
 506           }
 507       }
 508   }
 509
 510   lf_print__internal_ref (file);
 511 }
 512
 513
 514
 515 typedef struct _form_fields form_fields;
 516 struct _form_fields {
 517   char *name;
 518   filter *fields;
 519   form_fields *next;
 520 };
 521
 522 static form_fields *
 523 insn_table_cache_fields (insn_table *isa)
 524 {
 525   form_fields *forms = NULL;
 526   insn_entry *insn;
 527   for (insn = isa->insns;
 528        insn != NULL;
 529        insn = insn->next) {
 530     form_fields **form = &forms;
 531     while (1)
 532       {
 533         if (*form == NULL)
 534           {
 535             /* new format name, add it */
 536             form_fields *new_form = ZALLOC (form_fields);
 537             new_form->name = insn->format_name;
 538             filter_add (&new_form->fields, insn->field_names);
 539             *form = new_form;
 540             break;
 541           }
 542         else if (strcmp ((*form)->name, insn->format_name) == 0)
 543           {
 544             /* already present, add field names to the existing list */
 545             filter_add (&(*form)->fields, insn->field_names);
 546             break;
 547           }
 548         form = &(*form)->next;
 549       }
 550   }
 551   return forms;
 552 }
 553
 554
 555
 556 extern void
 557 print_icache_struct (lf *file,
 558                      insn_table *isa,
 559                      cache_entry *cache_rules)
 560 {
 561   /* Create a list of all the different instruction formats with their
 562      corresponding field names. */
 563   form_fields *formats = insn_table_cache_fields (isa);
 564
 565   lf_printf (file, "\n");
 566   lf_printf (file, "#define WITH_%sIDECODE_CACHE_SIZE %d\n",
 567              options.module.global.prefix.u,
 568              (options.gen.icache ? options.gen.icache_size : 0));
 569   lf_printf (file, "\n");
 570
 571   /* create an instruction cache if being used */
 572   if (options.gen.icache) {
 573     lf_printf (file, "typedef struct _%sidecode_cache {\n",
 574                options.module.global.prefix.l);
 575     lf_indent (file, +2);
 576     {
 577       form_fields *format;
 578       lf_printf (file, "unsigned_word address;\n");
 579       lf_printf (file, "void *semantic;\n");
 580       lf_printf (file, "union {\n");
 581       lf_indent (file, +2);
 582       for (format = formats;
 583            format != NULL;
 584            format = format->next)
 585         {
 586           lf_printf (file, "struct {\n");
 587           lf_indent (file, +2);
 588           {
 589             cache_entry *cache_rule;
 590             char *field;
 591             /* space for any instruction words */
 592             if (options.gen.insn_in_icache)
 593               lf_printf (file, "instruction_word insn[%d];\n", isa->max_nr_words);
 594             /* define an entry for any applicable cache rules */
 595             for (cache_rule = cache_rules;
 596                  cache_rule != NULL;
 597                  cache_rule = cache_rule->next)
 598               {
 599                 /* nb - sort of correct - should really check against
 600                    individual instructions */
 601                 if (filter_is_subset (format->fields, cache_rule->original_fields))
 602                   {
 603                     char *memb;
 604                     lf_printf (file, "%s %s;",
 605                                (cache_rule->type == NULL
 606                                 ? "unsigned"
 607                                 : cache_rule->type),
 608                                cache_rule->name);
 609                     lf_printf (file, " /*");
 610                     for (memb = filter_next (cache_rule->original_fields, "");
 611                          memb != NULL;
 612                          memb = filter_next (cache_rule->original_fields, memb))
 613                       {
 614                         lf_printf (file, " %s", memb);
 615                       }
 616                     lf_printf (file, " */\n");
 617                   }
 618               }
 619             /* define an entry for any fields not covered by a cache rule */
 620             for (field = filter_next (format->fields, "");
 621                  field != NULL;
 622                  field = filter_next (format->fields, field))
 623               {
 624                 cache_entry *cache_rule;
 625                 int found_rule = 0;
 626                 for (cache_rule = cache_rules;
 627                      cache_rule != NULL;
 628                      cache_rule = cache_rule->next)
 629                   {
 630                     if (strcmp (cache_rule->name, field) == 0)
 631                       {
 632                         found_rule = 1;
 633                         break;
 634                       }
 635                   }
 636                 if (!found_rule)
 637                   lf_printf (file, "unsigned %s; /* default */\n", field);
 638               }
 639           }
 640           lf_indent (file, -2);
 641           lf_printf (file, "} %s;\n", format->name);
 642         }
 643       lf_indent (file, -2);
 644       lf_printf (file, "} crack;\n");
 645     }
 646     lf_indent (file, -2);
 647     lf_printf (file, "} %sidecode_cache;\n", options.module.global.prefix.l);
 648   }
 649   else
 650     {
 651       /* alernativly, since no cache, emit a dummy definition for
 652          idecode_cache so that code refering to the type can still compile */
 653       lf_printf(file, "typedef void %sidecode_cache;\n",
 654                 options.module.global.prefix.l);
 655     }
 656   lf_printf (file, "\n");
 657 }
 658
 659
 660
 661 static void
 662 print_icache_function (lf *file,
 663                        insn_entry *instruction,
 664                        opcode_bits *expanded_bits,
 665                        insn_opcodes *opcodes,
 666                        cache_entry *cache_rules,
 667                        int nr_prefetched_words)
 668 {
 669   int indent;
 670
 671   /* generate code to enter decoded instruction into the icache */
 672   lf_printf(file, "\n");
 673   lf_print__function_type_function (file, print_icache_function_type,
 674                                     "EXTERN_ICACHE", "\n");
 675   indent = print_function_name (file,
 676                                 instruction->name,
 677                                 instruction->format_name,
 678                                 NULL,
 679                                 expanded_bits,
 680                                 function_name_prefix_icache);
 681   indent += lf_printf (file, " ");
 682   lf_indent (file, +indent);
 683   lf_printf (file, "(");
 684   print_icache_function_formal (file, nr_prefetched_words);
 685   lf_printf (file, ")\n");
 686   lf_indent (file, -indent);
 687
 688   /* function header */
 689   lf_printf (file, "{\n");
 690   lf_indent (file, +2);
 691
 692   print_my_defines (file,
 693                     instruction->name,
 694                     instruction->format_name,
 695                     expanded_bits);
 696   print_itrace (file, instruction, 1/*putting-value-in-cache*/);
 697
 698   print_idecode_validate (file, instruction, opcodes);
 699
 700   lf_printf (file, "\n");
 701   lf_printf (file, "{\n");
 702   lf_indent (file, +2);
 703   if (options.gen.semantic_icache)
 704     lf_printf (file, "unsigned_word nia;\n");
 705   print_icache_body (file,
 706                      instruction,
 707                      expanded_bits,
 708                      cache_rules,
 709                      (options.gen.direct_access
 710                       ? define_variables
 711                       : declare_variables),
 712                      (options.gen.semantic_icache
 713                       ? both_values_and_icache
 714                       : put_values_in_icache),
 715                      nr_prefetched_words);
 716
 717   lf_printf (file, "\n");
 718   lf_printf (file, "cache_entry->address = cia;\n");
 719   lf_printf (file, "cache_entry->semantic = ");
 720   print_function_name (file,
 721                        instruction->name,
 722                        instruction->format_name,
 723                        NULL,
 724                        expanded_bits,
 725                        function_name_prefix_semantics);
 726   lf_printf (file, ";\n");
 727   lf_printf (file, "\n");
 728
 729   if (options.gen.semantic_icache) {
 730     lf_printf (file, "/* semantic routine */\n");
 731     print_semantic_body (file,
 732                          instruction,
 733                          expanded_bits,
 734                          opcodes);
 735     lf_printf (file, "return nia;\n");
 736   }
 737
 738   if (!options.gen.semantic_icache)
 739     {
 740       lf_printf (file, "/* return the function proper */\n");
 741       lf_printf (file, "return ");
 742       print_function_name (file,
 743                            instruction->name,
 744                            instruction->format_name,
 745                            NULL,
 746                            expanded_bits,
 747                            function_name_prefix_semantics);
 748       lf_printf (file, ";\n");
 749     }
 750
 751   if (options.gen.direct_access)
 752     {
 753       print_icache_body (file,
 754                          instruction,
 755                          expanded_bits,
 756                          cache_rules,
 757                          undef_variables,
 758                          (options.gen.semantic_icache
 759                           ? both_values_and_icache
 760                           : put_values_in_icache),
 761                          nr_prefetched_words);
 762     }
 763
 764   lf_indent (file, -2);
 765   lf_printf (file, "}\n");
 766   lf_indent (file, -2);
 767   lf_printf (file, "}\n");
 768 }
 769
 770
 771 void
 772 print_icache_definition (lf *file,
 773                          insn_entry *insn,
 774                          opcode_bits *expanded_bits,
 775                          insn_opcodes *opcodes,
 776                          cache_entry *cache_rules,
 777                          int nr_prefetched_words)
 778 {
 779   print_icache_function (file,
 780                          insn,
 781                          expanded_bits,
 782                          opcodes,
 783                          cache_rules,
 784                          nr_prefetched_words);
 785 }
 786
 787
 788
 789 void
 790 print_icache_internal_function_declaration (lf *file,
 791                                             function_entry *function,
 792                                             void *data)
 793 {
 794   ASSERT (options.gen.icache);
 795   if (function->is_internal)
 796     {
 797       lf_printf (file, "\n");
 798       lf_print__function_type_function (file, print_icache_function_type,
 799                                         "INLINE_ICACHE", "\n");
 800       print_function_name (file,
 801                            function->name,
 802                            NULL,
 803                            NULL,
 804                            NULL,
 805                            function_name_prefix_icache);
 806       lf_printf (file, "\n(");
 807       print_icache_function_formal (file, 0);
 808       lf_printf (file, ");\n");
 809     }
 810 }
 811
 812
 813 void
 814 print_icache_internal_function_definition (lf *file,
 815                                            function_entry *function,
 816                                            void *data)
 817 {
 818   ASSERT (options.gen.icache);
 819   if (function->is_internal)
 820     {
 821       lf_printf (file, "\n");
 822       lf_print__function_type_function (file, print_icache_function_type,
 823                                         "INLINE_ICACHE", "\n");
 824       print_function_name (file,
 825                            function->name,
 826                            NULL,
 827                            NULL,
 828                            NULL,
 829                            function_name_prefix_icache);
 830       lf_printf (file, "\n(");
 831       print_icache_function_formal (file, 0);
 832       lf_printf (file, ")\n");
 833       lf_printf (file, "{\n");
 834       lf_indent (file, +2);
 835       lf_printf (file, "/* semantic routine */\n");
 836       if (options.gen.semantic_icache)
 837         {
 838           lf_print__line_ref (file, function->code->line);
 839           table_print_code (file, function->code);
 840           lf_printf (file, "error (\"Internal function must longjump\\n\");\n");
 841           lf_printf (file, "return 0;\n");
 842         }
 843       else
 844         {
 845           lf_printf (file, "return ");
 846           print_function_name (file,
 847                                function->name,
 848                                NULL,
 849                                NULL,
 850                                NULL,
 851                                function_name_prefix_semantics);
 852           lf_printf (file, ";\n");
 853         }
 854
 855       lf_print__internal_ref (file);
 856       lf_indent (file, -2);
 857       lf_printf (file, "}\n");
 858     }
 859 }